WO2007102480A1 - Heavy object conveying apparatus - Google Patents

Abstract

A heavy object conveying apparatus (45) has a longitudinally extending frame body composed of a first frame body (46) and a second frame body (47); a traveling body (18) installed on the frame bodies so as to be movable in the longitudinal direction and loading or unloading an heavy object; a first movable sheave (20) and a second movable sheave (21) mounted on the traveling body (18); a first wire part (27) extending from a rotating drum (34) and engaging with a second stationary sheave (31) , the first movable sheave (20), and a first stationary sheave (30); and a second wire part (28) extending from the rotating drum (34) and engaging with the second movable sheave (21) and a third stationery sheave (32). By an effect of the first movable sheave (20) or the second movable sheave (21), the traveling body (18) can be moved in either direction and a force required for the movement of the traveling body can be reduced in half.

Description

 Specification

 Heavy goods conveyor

 Technical field

 TECHNICAL FIELD [0001] The present invention relates to a heavy goods transport device, and more particularly to a heavy goods transport device used when carrying heavy goods into a container or carrying out container-powered heavy goods. Background art

 Conventionally, when a heavy object such as a pipe is carried into a container, the pipe is first mounted on a pallet. Then, a skid is inserted between the pallet and the floor, and the skid is lifted so that the skid supports the pallet.

 [0003] In this state, the lateral force of the skid is pressed to bring the pallet into the container together with the pipe, and then the skid is pulled out of the container.

 [0004] Similarly, when carrying out the heavy load also with container force, a skid is inserted into the pallet and is raised so that the pallet is supported on the skid. Then, by pulling the skid out of the container, heavy loads are also transported out of the container.

 [0005] FIG. 15 is a diagram schematically showing such a conventional heavy-weight conveying apparatus.

 [0006] Referring to the drawing, heavy article transport device 74 is configured around frame body 81 installed on floor surface 38 and traveling body 75 attached to the upper surface of frame body 81. A wire 76 is attached to both ends of the traveling body 75, and the wire 76 is engaged with each of the fixed pulley 78 and the rotating drum 79 and arranged in a loop shape. Here, the traveling body 75 acts on the above-mentioned heavy load also with a lateral force. That is, in the drawing, for example, a container is arranged on the left side, and when a heavy object is carried inside, the traveling body 75 moves in the left direction. Similarly, when carrying a heavy object, the traveling body 75 moves to the right side. The movement of the traveling body 75 is performed by transmitting a force required for the movement through the wire 76 by rotating the rotating drum 79 in any direction.

Specifically, when the rotary drum 79 is rotated clockwise in the drawing, the upper side of the wire 76 moves to the right, and as a result, the traveling body 75 moves to the left. Similarly, if the rotating drum 79 is rotated counterclockwise in the figure, the wire 76 The side moves in the right direction, and as a result, the traveling body 75 is moved in the right direction.

[0008] In this way, the heavy material transport device 74 is used by determining the rotation direction of the rotary drum 79 in accordance with the purpose of carrying in or carrying out the heavy material.

[0009] In the conventional heavy load transport apparatus as described above, the force required to move the traveling body that pushes or pulls out the skid or the like is basically equal to the force that acts on the skid.

, Very great power was needed.

[0010] Accordingly, the present invention has been made to solve the above-described problems, and provides a heavy goods transport device that requires less force to move a traveling body that acts on heavy goods. With the goal.

 Disclosure of the invention

 [0011] In order to achieve the above object, a heavy article transporting apparatus according to a first aspect of the present invention is provided.

, A heavy goods transport device for transporting heavy objects, and a frame body extending in the longitudinal direction and installed on the frame body so as to be movable in the longitudinal direction, for carrying in and out heavy objects A traveling body, a first moving pulley attached to the traveling body, one end of which is fixed to the first fixing portion of the frame body, a wire engaged with the first moving pulley, a wire fixed to the frame body, and a wire The other end of which is connected and a rotating drum capable of winding the wire.

 [0012] With this configuration, when the rotating drum is driven, the traveling body moves via the first movable pulley.

 [0013] The heavy article transport device according to the second aspect of the present invention is further provided with a second movable pulley attached to the traveling body in the configuration of the invention according to the first aspect, and the wire is further provided via a rotating drum. The other end of the wire is fixed to the second fixing portion of the frame body, and the traveling body moves forward or backward depending on the winding direction of the wire by the rotating drum.

 [0014] With this configuration, the moving direction of the traveling body is determined according to the driving direction of the rotating drum.

[0015] A heavy article transport device according to a third aspect of the present invention, in the configuration of the invention according to the second aspect, engages with a wire between the first movable pulley and the first fixed portion, and is a frame body. A first fixed pulley fixed to the first engaging pulley, a second fixed pulley fixed to the frame body and engaged with a wire between the first moving pulley and the rotating drum; a second moving pulley and a second fixing portion; And a third fixed pulley fixed to the frame body.

[0016] With this configuration, the traveling body moves smoothly by winding the rotary drum.

[0017] In the heavy article transport device according to the fourth aspect of the present invention, in the configuration of the invention according to the third aspect, one end of the wire passes through the first fixed portion and is connected to the first balancer. The other end of the through hole penetrates the second fixed portion and is connected to the second balancer.

 [0018] With this configuration, a constant tension or more is always generated on the wire regardless of the rotation direction of the rotating drum.

 [0019] The heavy-duty conveyance device according to the fifth aspect of the present invention is the structure of the invention according to the fourth aspect, wherein the wire between the first constant pulley and the first balancer is on the side of the first constant pulley. First stopper means for preventing movement to the second constant pulley is provided on the wire between the second fixed pulley and the second balancer, and second stopper means for preventing movement to the second constant pulley side is provided. It is.

 [0020] With this configuration, the end of the wire to which tension is applied according to the rotation of the rotating drum does not move.

 [0021] A heavy goods transport device according to a sixth aspect of the present invention is a heavy goods transport device for transporting heavy goods, and is capable of moving in a longitudinal direction on a frame body extending in a longitudinal direction and on the frame body. A traveling body for carrying in or out heavy objects, a first movable pulley attached to the traveling body, a first fixed pulley fixed to the frame body, and one end of the traveling body. A fixed drum that engages with the first fixed pulley and then engages with the first movable pulley, and a rotating drum that is fixed to the frame body and connected to the other end of the wire so that the wire can be wound. It is equipped with.

 [0022] With this configuration, when the rotary drum is driven, the traveling body moves via the first movable pulley.

[0023] A heavy article transporting apparatus according to a seventh aspect of the present invention is the second aspect of the invention according to the sixth aspect, wherein the second movable pulley attached to the traveling body and the second fixed pulley fixed to the frame body are provided. The wire further extends through the rotating drum, engages with the second movable pulley after being engaged with the second moving pulley, the other end of the wire is fixed to the traveling body, and the traveling body is The wire moves forward or backward depending on the winding direction of the wire by the rotating drum.

[0024] With this configuration, the moving direction of the traveling body is determined according to the driving direction of the rotating drum.

 [0025] A heavy-duty conveyance device according to an eighth aspect of the present invention, in the configuration of the invention according to the seventh aspect, engages with a wire between the first movable pulley and the rotating drum and is fixed to the frame body. The third fixed pulley is further provided.

 [0026] With this configuration, the traveling body moves smoothly by winding the rotary drum.

[0027] In the heavy goods transporting device according to the ninth aspect of the present invention, in the configuration of the invention according to the eighth aspect, the first fixed pulley is connected to the frame body via the first balancer, and the second constant pulley is connected. The pulley is connected to the frame body via the second balancer.

 [0028] With this configuration, a constant tension or more is always generated on the wire regardless of the rotation direction of the rotating drum.

 [0029] In the heavy goods transport device according to the tenth aspect of the present invention, in the configuration of the invention according to the ninth aspect, the first balancer prevents the first constant pulley from moving toward the first moving pulley. First stopper means is provided, and the second balancer is provided with second stopper means for preventing the movement of the second constant pulley toward the second moving pulley.

 [0030] With this configuration, the first constant pulley or the second constant pulley to which tension is applied according to the rotation of the rotating drum does not move.

 [0031] As described above, the heavy article transport device according to the first aspect of the present invention moves the traveling body directly because the traveling body moves via the first movable pulley when the rotating drum is driven. It is possible to move the traveling body with almost half of the force required for this.

[0032] In addition to the effects of the invention of the first aspect, the heavy article transport device according to the second aspect of the present invention determines the moving direction of the traveling body according to the driving direction of the rotating drum. Loading and unloading of objects is almost half the power and can be done with one device, making it easy to use. [0033] In addition to the effect of the invention in the second aspect, the heavy article transporting apparatus in the third aspect of the present invention is a highly reliable apparatus because the traveling body smoothly moves by winding the rotary drum. It becomes.

 [0034] In addition to the effects of the invention of the third aspect, the heavy article conveying device according to the fourth aspect of the present invention generates a certain tension on the wire regardless of the rotational direction of the rotating drum. The reliability of the winding operation of the rotating drum is improved.

[0035] In addition to the effects of the invention according to the fourth aspect, the heavy article conveying device according to the fifth aspect of the invention moves the end of the wire on the side to which tension is applied according to the rotation of the rotating drum. Therefore, a stable traveling body can be moved.

[0036] In the heavy article transport device according to the sixth aspect of the present invention, when the rotary drum is driven, the traveling body moves via the first movable pulley, so that the force required to directly move the traveling body is almost the same.

The traveling body can be moved with a third of the force.

[0037] In addition to the effects of the invention of the sixth aspect, the heavy-duty conveyance device of the seventh aspect of the present invention determines the moving direction of the traveling body in accordance with the driving direction of the rotating drum. The loading and unloading of goods is almost one-third of the force and is possible with a single device, making it easy to use.

 [0038] In addition to the effect of the invention in the seventh aspect, the heavy-duty conveying device in the eighth aspect of the present invention is a highly reliable device because the traveling body smoothly moves by winding the rotary drum. It becomes.

 [0039] In addition to the effect of the invention according to the eighth aspect, the heavy article conveying device according to the ninth aspect of the present invention generates a certain tension or more on the wire regardless of the rotation direction of the rotating drum. The reliability of the winding operation of the rotating drum is improved.

 [0040] In addition to the effects of the invention according to the ninth aspect, the heavy article transporting device according to the tenth aspect of the present invention includes the first constant pulley or the second constant pulley on the side to which tension is applied according to the rotation of the rotating drum. Since the pulley does not move, the traveling body can be moved stably.

 Brief Description of Drawings

FIG. 1 is a schematic diagram showing a schematic configuration of a transport mechanism used in a heavy article transport device according to a first embodiment of the present invention. [2] FIG. 2 is a view showing a modification of the schematic diagram shown in FIG.

[3] FIG. 3 is a side view showing a schematic structure of the heavy article transport device according to the first embodiment of the present invention.

 FIG. 4 is a view from the IV-IV line shown in FIG.

FIG. 5 is an enlarged view of “A” portion shown in FIG.

FIG. 6 is an enlarged cross-sectional view of the VI-VI line shown in FIG.

7 is an enlarged cross-sectional view of the VII-VII line shown in FIG.

8 is a cross-sectional view taken along line VIII-VIII shown in FIG.

FIG. 9 is a cross-sectional view taken along the line IX-IX shown in FIG.

FIG. 10 is an enlarged view of a portion “B” shown in FIG.

FIG. 11 is an enlarged view of “C” portion shown in FIG.

FIG. 12 is an enlarged view of a portion “D” shown in FIG.

 FIG. 13 is a view corresponding to FIG. 4 and showing a state in which the traveling body is moved in the direction of the arrow.

 14 is a cross-sectional view of the XIV-XIV line shown in FIG.

[15] FIG. 15 is a diagram schematically showing a schematic structure of a conventional heavy-duty conveyance device.

FIG. 16 is a view schematically showing a transport mechanism of a heavy article transport device according to a second embodiment of the present invention.

FIG. 17 is a schematic configuration diagram for explaining the balance of forces in the transport mechanism according to the second embodiment of the present invention.

 FIG. 18 is a diagram corresponding to the schematic diagram shown in FIG. 16, and showing a modification thereof. FIG. 19] A plan view showing a part of a schematic structure of a heavy-weight conveying apparatus according to a second embodiment of the present invention.

 20 is a cross-sectional view taken along line XX—XX shown in FIG.

FIG. 21 is a view as seen from the XXI—XXI line shown in FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a diagram schematically showing a transport mechanism of a heavy article transport device according to a first embodiment of the present invention. Referring to the drawing, the transport mechanism 17 is configured with a first moving pulley 20 and a second moving pulley 21 attached to the traveling body 18 and a rotating drum 34 of a capstan type as a center. The wire 26 extending downward in the figure with the rotating drum 34 as the center is represented as a first wire portion 27, and the wire 26 extending above the rotating drum 34 is represented as a second wire portion 28. The portion 27 and the second wire portion 28 are integrally connected as a wire 26 via a rotating drum 34.

 One end of the first wire portion 27 extending from the rotating drum 34 is fixed to the first fixing portion 23. The first wire portion 27 connected to the first fixed portion 23 engages with the first movable pulley 20 attached to the traveling body 18 after engaging with the first constant pulley 30. Further, the first wire portion 27 engaged with the first moving pulley 20 is connected to the rotating drum 34 after engaging with the second constant pulley 31.

 On the other hand, one end of the second wire portion 28 is fixed to the second fixing portion 24 and engages with the second movable pulley 21 attached to the traveling body 18 after engaging with the third constant pulley 32. The second wire portion 28 engaged with the second movable pulley 21 is directed to the rotating drum 34 and connected to the first wire portion 27 after winding its body portion a plurality of times.

 Next, the operation in the transport mechanism 17 will be described.

 [0047] When the traveling body 18 is to be moved leftward in the figure, the rotary drum 34 is rotated counterclockwise in the figure. Then, the first wire portion 27 is wound up by the rotating drum 34, and the distance to the first fixing portion 23 is gradually shortened. As a result, the first moving pulley 20 moves to the left in the figure while rotating clockwise. Specifically, when the first movable pulley 20 (the traveling body 18) moves by a certain distance G, the first wire portion 27 is wound up by a length of 2′G. At this time, the second wire portion 28 is gradually fed out from the rotary drum 34, so that the distance to the second fixed portion 24 is gradually increased. As a result, since the second movable pulley 21 can move to the left side, the second wire portion 28 does not hinder the traveling body 18 from moving to the left side in the drawing.

[0048] As a result, the speed at which the first wire portion 27 becomes shorter and the speed at which the second wire portion 28 becomes longer substantially coincide with each other, and the traveling body 18 moves smoothly to the left. In this case, one end of the first wire portion 27 that works to move the traveling body 18 to the left side is fixed to the first fixing portion 23. Since the other end is wound around the rotary drum 34, the force generated in each is half of the force required to move the traveling body 18 directly to the left. In this way, the traveling body 18 can be moved in the left direction with a small force.

Next, a case where the traveling body 18 is moved in the right direction will be described.

In this case, contrary to the above, the rotating drum 34 may be rotated clockwise. Then, the length of the second wire portion 28 is gradually shortened by being wound by the rotating drum 34. As a result, the second movable pulley 21 moves to the right in the figure while rotating counterclockwise. The first wire portion 27 is gradually lengthened by the clockwise rotation of the rotating drum 34. As a result, the first movable pulley 20 can move to the right by the force S without rotating counterclockwise. As a result, the traveling body 18 moves smoothly in the right direction. Also, the force required to move the traveling body 18 is halved compared to the force required to move the traveling body 18 directly to the right by the action of the second movable pulley 21, and the traveling body is reduced by a small force. 18 can be moved to the right.

FIG. 2 is a diagram corresponding to the schematic diagram shown in FIG. 1, and showing a modification thereof.

[0052] With reference to FIG. 2 (1), this figure explains the case where the traveling body 18 is moved in the left direction. The difference between this figure and FIG. 1 is that the end of the second wire portion 28 is connected to the spring-type second balancer 36 in a state of passing through the second fixing portion 24. However, the second wire portion 28 is configured to be able to move to the left side in the drawing in the second fixing portion 24, but is prevented from moving to the right side. In this embodiment, such a configuration is also treated as one form in which the second wire portion 28 is fixed to the second fixing portion 24. The second balancer 36 (capacity: 15-22kgf, stroke: 1.5m) is used to generate a certain tension on the second wire portion 28 by attaching it.

[0053] The necessity of installing the second balancer 36 will be described. When the rotating drum 34 is rotated counterclockwise as shown in the figure, the end of the first wire portion 27 is fixed to the first fixing portion 23, and therefore a certain tension is applied. On the other hand, since the second wire portion 28 is drawn out by the rotation of the rotary drum 34, its length gradually increases. Here, if both the first wire portion 27 and the second wire portion 28 are completely rigid bodies, they will not stretch even if tension is applied! /, But they are actually not completely rigid bodies. In that axial direction, I'm sorry to tell you.

 Therefore, if the end of the second wire portion 28 is completely fixed to the second fixing portion 24 as shown in FIG. 1, the second moving pulley 21 having the same distance as the first moving pulley 20 is provided. Even if the first wire portion 27 moves to the left, the second wire portion 28 side is left as much as the first wire portion 27 extends. If this state is left as it is, the second wire portion 28 gradually loosens and the winding state of the rotating drum 34 becomes weak. If this state further proceeds, even if the rotary drum 34 is rotated, the first wire portion 27 slips, and as a result, the traveling body 18 may not be able to move further.

 [0055] Therefore, in order to absorb the elongation of the first wire portion 27, the second nolancer 36 is attached to the end portion of the second wire portion 28. By the action of the second balancer 36, a constant tension is applied to the second wire portion 28 even if the first wire portion 27 changes to a state where the first wire portion 27 extends from the initial length. As a result, the winding operation of the rotating drum 34 is reliably performed, and the traveling body 18 is moved smoothly and stably throughout.

 [0056] Fig. 2 (2) is a diagram showing a state in which the traveling body 18 is moved in the right direction in the figure.

 [0057] Referring to the drawing, in this case, the force for rotating the rotating drum 34 clockwise. For the same reason as described above, the second wire portion 28 is tensioned, but the first wire portion 27 is tensioned. As a result, the first wire portion 27 gradually loosens. If this state is left unattended, the winding of the rotary drum 34 will not be successful, and the spring-type first balancer 35 having the same specifications as the second balancer 36 is connected to the end of the first wire portion 27. Note that the penetration structure of the first fixing portion 23 of the first wire portion 27 is the same as the penetration structure of the second fixing portion 24 of the second wire portion 28 described in (1) of FIG. This configuration is also treated as one form in which the first wire portion 27 is fixed to the first fixing portion 23. As a result, a constant tension is applied to the first wire portion 27 by the action of the first balancer 35 as described above. As a result, the traveling body 18 can be moved in the right direction to the end in a smooth and stable state.

[0058] As described above, since the traveling direction of the traveling body 18 changes depending on whether the heavy object is carried in or out, both the first balancer 35 and the second balancer 36 are actually the first wire portion 2. It is preferable that the end of 7 and the end of the second wire portion 28 are simultaneously connected to each other.

[0059] Fig. 3 is a side view showing a schematic structure of the heavy goods transport device according to the first embodiment of the present invention, and Fig. 4 is a view seen from the IV-IV line shown in Fig. 3. .

 [0060] With reference to these drawings, a dry container 39 is installed on the floor 38, and one end thereof is in an open state. A heavy material transfer device 45 is installed on the upper surface of the floor surface 38 at a position facing the open side of the dry container 39. A heavy object 40 made of a long object such as a pipe is mounted on a pallet 42 and placed on a heavy object transport device 45 from above. In this state, a skid 43 is inserted between the pallet 42 and the upper surface of the heavy-duty conveying device 45 so that the pallet 42 is supported by the skid 43.

 Next, the traveling body 18 of the heavy article transport device 45 is pressed against one end of the skid 43 and the rotary drum 34 is driven to advance in the left direction in the figure. Then, the heavy load 40 and the pallet 42 together with the skid 43 are carried into the dry container 39. When the carry-in is completed, the traveling body 18 is moved in the reverse direction by rotating the rotary drum 34 in the reverse direction. Then, only the skid 43 is pulled out, and the work of loading the heavy load 40 into the container 39 is completed.

 Next, referring to FIG. 4, heavy article transport device 45 includes a frame body in which first frame body 46 and second frame body 47 are integrated in the longitudinal direction, and is movable in the longitudinal direction of the frame body. It is constructed around a traveling body 18 installed so as to be. The same reference numerals as those shown in FIG. 2 correspond to those shown in FIG. 5 is an enlarged view of the “A” portion shown in FIG. 4, FIG. 6 is an enlarged sectional view of the VI-VI line shown in FIG. 4, and FIG. 7 is a VII-VII shown in FIG. 8 is an enlarged sectional view of the line, FIG. 8 is a sectional view of the line VIII-VIII shown in FIG. 4, and FIG. 9 is a sectional view of the line IX-IX shown in FIG.

[0063] Referring to these drawings, traveling body 18 is configured such that the tip thereof can be connected to skid 43, and is formed on the upper surfaces of first frame body 46 and second frame body 47 in the longitudinal direction. The first guide rail 54 and the second guide rail 62 are configured to be movable in the longitudinal direction. The first wire portion 27 extending from the rotary drum 34 is engaged with the second fixed pulley 31 through the inner surfaces of the first frame body 46 and the second frame body 47 as shown in FIG. The The first wire portion 27 engaged with the second fixed pulley 31 is engaged with the first movable pulley 20 attached to the lower surface of the traveling body 18 and then the first balancer 30 through the engagement of the first constant pulley 30. Connect to 35.

 On the other hand, the second wire portion 28 extending from the rotating drum 34 extends on the upper surfaces of the first frame body 46 and the second frame body 47 as shown in FIG. 8, and engages with the second movable pulley 21. To do. The second wire portion 28 engaged with the second moving pulley 21 is engaged with the third fixed pulley 32 through the upper surfaces of the first frame body 46 and the second frame body 47, and the first frame body 46 and the second frame. Connect to the second balancer 36 through the inner surface of body 47. The first frame body 46 and the second frame body 47 are attached with beams such as H-shaped steel at equal intervals in a direction perpendicular to the longitudinal direction. As shown in FIG. 6, an opening 52 and an opening 53 are formed in the first plate 51, which is the web portion of the beam, and the first wire portion 27 and the second wire are formed so as to penetrate them. Part 28 is arranged.

 Similarly, as shown in FIG. 7, the second beam 64 made of I-shaped steel is attached so as to span the second frame member 56a made of H-shaped steel and the second frame member 56b. An opening 58 and an opening 59 are also formed in the portion of the web, and the first wire portion 27 and the second wire portion 28 are disposed so as to pass through them. In this way, efficient wire placement is achieved with respect to the frame body.

 [0066] FIG. 10 is an enlarged view of “B” portion shown in FIG. 9, FIG. 11 is an enlarged view of “C” portion shown in FIG. 9, and FIG. 12 is “D” shown in FIG. "It is an enlarged view of the part.

 Referring to FIG. 10, opening 65 is formed in first beam 57 attached in the direction orthogonal to the longitudinal direction of second frame body 47. One end of the first wire portion 27 is connected to a first stopper 61 having a larger area than the opening 65 that can close the opening 65. A first balance wire 66 connected to the first balancer 35 is attached to the opposite side of the first stopper 61! /.

With this configuration, the first stopper 61 does not move leftward from the state shown in the figure. Therefore, this state is maintained even when a tension for moving the traveling body 18 is applied to the first wire portion 27. Thus, the first stopper 61 and the first beam 57 constitute first stopper means. [0069] On the other hand, when the traveling body 18 moves in the opposite direction and tension is not applied to the first wire portion 27, the first balancer 35 causes the first stopper 61 to move rightward in the figure. As it moves, a constant tension is applied to the first wire portion 27.

 Referring to FIG. 11, first balancer 35 and second balancer 36 are connected to each other via connecting tool 70. In this embodiment, the third beam 68 is provided with an opening 69, and the connector 70 is not fixed to the third beam 68. However, instead of this, the connecting member 70 may be fixed to the third beam 68.

 Referring to FIG. 12, one end of second wire portion 28 is connected to second stopper 63.

 The second stopper 63 is sized so as to block the left side force in the drawing in the opening 58 formed in the second beam 64. Therefore, the second stopper 63 cannot move to the right side beyond the opening 58 of the second beam 64, but is configured to move freely to the left side as shown in the figure. Thus, the second stopper 63 and the second beam 64 constitute a second stopper means. A second balance wire 71 connected to the second balancer 36 is attached to the opposite surface of the second stopper 63.

 In the state shown in the figure, a state is shown in which the tension of the second wire portion 28 is reduced by the movement of the traveling body 18. In this case, the second balancer 36 moves the second stopper 63 to the left in the drawing via the second balancer 71 by the action of the second balancer 36. As a result, a constant tension is applied to the second wire portion 28. become.

 [0073] On the other hand, when tension starts to be generated in the second wire portion 28 depending on the moving direction of the traveling body 18, the second stopper 63 moves to the right in the state force in the figure. Then, the movement stops with the opening 58 of the second beam 64 blocked, and the end of the second wire portion 28 is used without moving any further. As a result, a stable tension is generated in the second wire portion 28, and the movement of the traveling body 18 is smoothly achieved.

 FIG. 13 is a diagram corresponding to FIG. 4, and is a diagram showing a state in which the traveling body 18 of the heavy material transport device 45 is moving in the right direction (unloading heavy material) in the diagram. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG.

[0075] Referring to these drawings, when the rotating drum 34 is driven so that the traveling body 18 moves in the right direction, the tension of the second wire portion 28 increases, but the tension of the first wire portion 27 is increased. Decrease Will do. As a result, by the action of the first balancer 35, the second stopper 63 moves to the right from the second beam 64 by the size S as shown in FIG. As a result, the first wire portion 27 is always given a tension that does not impede the driving of the rotary drum 34. For this reason, the movement of the traveling body 18 in the right direction is performed in a state where it is stable throughout.

 [0076] It should be noted that in the first embodiment described above, if the force heavy-duty conveying device that uses two moving pulleys attached to the traveling body uses only one of loading and unloading heavy objects, Only one moving pulley may be installed and configured!

 [0077] In the first embodiment described above, three fixed pulleys are attached. However, depending on the arrangement of the wires, the number may be less or not at all.

 [0078] Further, in the first embodiment described above, a spring type balancer is provided. Instead, an air cylinder, a spring, a take-up drum, or the like is used, or a weight is attached to the end of the wire. It may be configured so that a constant tension is always applied to the wire.

 FIG. 16 is a diagram schematically showing a transport mechanism of a heavy article transport device according to the second embodiment of the present invention, and corresponds to FIG. 1 according to the first embodiment.

 [0080] Referring to the figure, the transport mechanism 17 is mainly configured by a first moving pulley 20 and a second moving pulley 21 attached to the traveling body 18, and a rotating drum 34 of a capstan type. The point is the same as in the previous embodiment. Note that the wire 26 extending downward in the drawing with the rotating drum 34 as the center is represented as a first wire portion 27, and the force 26 extending above the rotating drum 34 is represented as a second wire portion 28. The portion 27 and the second wire portion 28 are integrally connected as a wire 26 via a rotating drum 34.

One end of the first wire portion 27, which also extends the force of the rotating drum 34, is fixed to one end of the traveling body 18. Although this point is significantly different from the previous embodiment, this effect will be described later. The first wire portion 27 connected to the traveling body 18 engages with the first moving pulley 20 attached to the traveling body 18 after engaging with the first constant pulley 30 fixed to the frame body 83a. Further, the first wire portion 27 engaged with the first moving pulley 20 is engaged with the third constant pulley 32 fixed to the frame body 83b, and then is fixed to the frame body 83d. Connected to 34.

 [0082] On the other hand, one end of the second wire portion 28 is also fixed to the other end of the traveling body 18, and is engaged with the second fixed pulley 31 fixed to the frame body 83c and then attached to the traveling body 18. 2 Engage with pulley 21. This is also very different from the previous embodiment. The second wire portion 28 engaged with the second movable pulley 21 is directed to the rotating drum 34 and wound around its body a plurality of times and then connected to the first wire portion 27.

 Next, the operation in the transport mechanism 17 will be described.

 [0084] When the traveling body 18 is to be moved leftward in the figure, the rotary drum 34 is rotated counterclockwise in the figure. Then, the first wire portion 27 is wound up by the rotating drum 34, and the distance to the end fixed to one end of the traveling body 18 is gradually shortened. As a result, the first moving pulley 20 moves to the left in the figure while rotating clockwise. As a result, the traveling body 18 moves to the left.

 [0085] Specifically, when the first movable pulley 20 (running body 18) moves by a certain distance G, the first wire portion 27 is engaged with the traveling body 18 as three wires. Only the length of 'G will be scraped off. At this time, since the second wire portion 28 is gradually fed out from the rotary drum 34, the distance to the end fixed to the other end of the traveling body 18 is gradually increased by 3 · G. As a result, since the second movable pulley 21 can move to the left side, the second wire portion 28 does not hinder the traveling body 18 from moving to the left side in the drawing.

 [0086] Since the speed at which the first wire portion 27 is shortened and the speed at which the second wire portion 28 is lengthened substantially coincide with each other, the traveling body 18 moves smoothly to the left. In this case, the first wire portion 27 that works to move the traveling body 18 to the left side is fixed to the traveling body 18 at one end via the first fixed pulley 30, and the other end is wound around the rotating drum 34. Therefore, the force generated in the first wire portion 27 is approximately one third of the force required to move the traveling body 18 directly to the left side. In this way, a force that can move the traveling body 18 in the leftward direction with a smaller force than that according to the first embodiment. Next, this principle will be described.

FIG. 17 is a diagram for explaining the balance of forces in the transport mechanism according to the second embodiment. It is a schematic block diagram.

 With reference to the drawings, the transport mechanism according to this embodiment can be schematically illustrated in this way. In the normal method of using a constant pulley as in the first embodiment, the other end of the wire 27 is fixed to the frame body 83. Therefore, the tension T generated in the wire 27 is half of the weight W of the traveling body (heavy object) 18.

 However, in this embodiment, the other end of the wire 27 is not connected to the frame body 83 but is connected to the traveling body 18 itself via the first fixed pulley 30 fixed to the frame body 83. It is connected.

 [0090] On the other hand, considering the force relationship centered on the first moving pulley 20 and the traveling body 18, the upward force T, T, and T force that holds the first moving pulley 20 are generated via the T force wire 27. become.

 one two Three

 That is, if the weight of the traveling body is W and the weight of the wire 27 and the first movable pulley 20 is ignored, W = T + T + T (1)

 one two Three

 It becomes.

 Here, in a state where the forces are balanced, since the wire 27 is continuous, the tension T generated in the wire 27 is all the same.

 That is,

 T = T = T = T (2)

 one two Three

 From the above formulas (1) and (2),

 W = 3 -T

 It becomes.

 Accordingly, the tension T to be held on the wire 27 required to move the traveling body 18 is determined by the traveling body.

 (Heavy) The weight of 18 is 1/3 of W.

[0092] In the schematic diagram of FIG. 17, for the sake of convenience, the first fixed pulley 30 is reduced in size so that the forces T, T, and T

1 2 3 The portions of the added wire 27 are arranged in the vertical direction. However, depending on the actual size of the first fixed pulley 30, these portions may not be in the complete vertical direction. Even in this case, if the distance between each of the first constant pulley 30 and the third constant pulley 32 and the first movable pulley 20 is sufficient, it is assumed that all the wires 27 are arranged substantially vertically. The calculation method can be approximated. Therefore, in this embodiment, running The force required to move the line 18 is almost one third of the force required to move the vehicle directly. As a result, the heavy object can be moved with a smaller force than that according to the first embodiment.

Returning to FIG. 16, the case where the traveling body 18 is moved rightward will be described next.

In this case, contrary to the above, the rotating drum 34 may be rotated clockwise. Then, the length of the second wire portion 28 is gradually shortened by being wound by the rotating drum 34. As a result, the second movable pulley 21 moves to the right in the figure while rotating counterclockwise. The first wire portion 27 fed out by the clockwise rotation of the rotary drum 34 becomes gradually longer. As a result, the first movable pulley 20 can move to the right while rotating counterclockwise. As a result, the traveling body 18 moves smoothly to the right. In addition, the force required to move the traveling body 18 also moves the traveling body 18 directly in the right direction directly due to the point that the tip of the second wire portion 28 is fixed to the traveling body 18 and the action of the second movable pulley 21. This is almost one third of the force required to make it move, and the moving body 18 can be moved in the right direction with a smaller force.

FIG. 18 is a diagram corresponding to the schematic diagram shown in FIG. 16, and showing a modification thereof.

Referring to (1) of FIG. 18, this figure explains the case where the traveling body 18 is moved in the left direction. One difference between this figure and FIG. 16 is that the first fixed pulley 30 is connected to the frame body 83a via the first stopper 61 and the weight type first balancer 35 in a state where the first fixed pulley 30 passes through the first fixing portion 84a. It is a point that has been. Another difference is that the second fixed pulley 31 is connected to the frame body 83c via the second stopper 63 and the weight type second balancer 36 in a state where the second fixed pulley 31 passes through the second fixed portion 84b. It is a point.

Thus, the first fixed pulley 30 can move to the left side, but the right side movement is configured such that the first stopper 61 abuts against the first fixing portion 84a and is prevented. ing. Further, since the first balancer 35 always pulls the first constant pulley 30 to the left side in the drawing, a constant tension is generated in the first wire portion 27 around the first constant pulley 30. The second fixed pulley 31 can move to the right, but the left The par 63 is configured to be blocked by coming into contact with the second fixing portion 84b. Similarly, a constant tension is generated in the second wire portion 28 around the second constant pulley 31 by the action of the second nolancer 36.

 The necessity of installing the first balancer 35, the second balancer 36, etc. will be described. When the rotating drum 34 is rotated counterclockwise as shown in the figure, the end of the first wire portion 27 is fixed to the traveling body 18, so that a certain tension is applied. In this case, the first fixed pulley 30 cannot move any further because the first stopper 61 is in contact with the fixed portion 84c due to this tension. As a result, a constant tension is maintained in the first wire portion 27, and the traveling body 18 moves smoothly to the left. On the other hand, since the second wire portion 28 is drawn out by the rotation of the rotary drum 34, the length thereof gradually increases. Here, if both the first wire portion 27 and the second wire portion 28 are completely rigid bodies, they will not stretch even if tension is applied, but in reality they are not completely rigid bodies, so if there is tension, some axial direction will occur. Will grow.

 [0099] Therefore, if the end of the second wire portion 28 is completely fixed to the traveling body 18 as shown in FIG. 16, the left direction of the second moving pulley 21 of the same distance as the first moving pulley 20 is provided. Even if the first wire portion 27 is moved, the second wire portion 28 side is left as much as the first wire portion 27 extends. If this state is left as it is, the second wire portion 28 gradually loosens, and the winding state of the rotating drum 34 also becomes weak. If this state further proceeds, even if the rotary drum 34 is rotated, the wound first wire portion 27 slips, and as a result, the traveling body 18 may not be able to move further.

 [0100] Therefore, in order to absorb the elongation of the first wire portion 27, the second constant pulley 31 with which the second wire portion 28 engages is connected to the frame body 83C via the second balancer 36. By the action of the second balancer 36, even if the first wire portion 27 changes to a state where it has been extended from its original length, the second constant pulley 31 is moved to the frame body 83C side, so that a constant tension can be obtained. It can be given to the part 28. As a result, the winding operation of the rotating drum 34 is reliably performed, and the traveling body 18 is moved smoothly and stably throughout.

[0101] (2) of FIG. 18 is a view showing a state in which the traveling body 18 is moved in the right direction in the figure. [0102] Referring to the figure, in this case, the force that rotates the rotating drum 34 in the clockwise direction. The tension is generated in the second wire portion 28 for the same reason as described above, but the tension is applied to the first wire portion 27. As a result, the first wire portion 27 gradually loosens. If this state is left unattended, the winding of the rotating drum 34 will not be successful, so the first fixed pulley 30 is connected to the frame body 83a via the weight type first balancer 35 having the same specifications as the second balancer 36. Is. As a result, a constant tension is applied to the first wire portion 27 by the action of the first balancer 35 as described above. As a result, the traveling body 18 can be moved to the right side to the end in a smooth and stable state.

[0103] As described above, since the traveling direction of the traveling body 18 changes depending on whether the heavy object is carried in or out, each of the first balancer 35 and the second balancer 36 is an end portion of the first wire portion 27. And the end of the second wire portion 28 are simultaneously connected to each other. However, when the traveling body 18 is used only for loading or unloading heavy objects, the first balancer 35 and the second balancer 36 are!

 FIG. 19 is a plan view showing a part of a schematic structure of a heavy-duty conveyance device according to the second embodiment of the present invention, and corresponds to FIG. 4 according to the first embodiment. 20 is a cross-sectional view taken along the line XX—XX shown in FIG. 19, and FIG. 21 is a view taken along the line XXI—XXI shown in FIG.

 Referring to these drawings, a frame body 83 is installed in the horizontal direction on the floor surface 38 via the legs 90 as the heavy material transport device 45. The heavy article transport device 45 is configured around the frame body 83 and the traveling body 18 installed so as to be movable in the longitudinal direction of the frame body 83. That is, in this embodiment, unlike the previous embodiment, a heavy object is transported to the container at a position higher than the floor surface 38, or the container force is unloaded. Note that the same reference numerals as those shown in FIG. 18 correspond to those shown in these drawings.

[0106] The traveling body 18 actually has a planar shape as shown in FIG. 4, and is configured such that its tip can be connected to a skid (not shown). The first moving pulley 20 and the second moving pulley 21 are attached to the lower surface of the traveling body 18, and the pulley 85 is attached to the rear part of the frame body 83. The pulley 86 and the third pulley 32 are mounted so that their axial directions are the same and arranged in parallel.

 The first wire portion 27 extending from a rotating drum (not shown) is engaged with the third constant pulley 32 through the upper surface of the frame body 83. The first wire portion 27 engaged with the third constant pulley 32 engages with the first moving pulley 20 attached to the lower surface of the traveling body 18. After engaging the first moving pulley 20, the first wire portion 27 engages with the pulley 85 and then engages with the pulley 87 downward. The first wire portion 27 engaged with the pulley 87 is directed upward, and is engaged with the pulley 86 and then connected to the traveling body 18.

 On the other hand, the second wire portion 28 extending from the rotating drum 34 has a configuration opposite to the structure of FIG. 19 except for the portion of the rotating drum 34 and the absence of a pulley corresponding to the third pulley 32. It has become. That is, the second wire portion 28 extends on the upper surface of the frame body 83 and engages with the second movable pulley 21. The second wire portion 28 engaged with the second movable pulley 21 passes through the upper surface of the frame body 83, engages with the three pulleys corresponding to the pulley 85, the pulley 87, and the pulley 86, and then connects to the traveling body 18. .

 [0109] A box body 101 having a rectangular cross section is installed below the pulley 85 and the pulley 86, and a pulley 87 is accommodated therein. A pair of elongated holes 102 extending upward and downward is formed on any of the opposing side surfaces of the box body 101. The pulley 87 is configured to be rotatable about a shaft 102, and the shaft 102 is disposed in a horizontal direction so as to pass through a pair of long holes. In addition, a weight 89 housed in the box body 101 is connected to the shaft 102. As a result, the pulley 87 can move up and down within the box 101 within the range in which the elongated hole 104 is formed with the weight 89 connected.

 [0110] Here, compared with the configuration of FIG. 18, the first fixed pulley 30 corresponds to the pulley 85, the pulley 86, and the pulley 87, the first balancer 35 corresponds to the weight 89, and the first stopper 61 has a long hole. 104 and axis 102 correspond.

 [0111] Next, the operation of the heavy article transport device will be described.

 First, as shown in (1) of FIG. 18, a case where the traveling body 18 is moved to the left in FIG. 19 will be described.

[0113] In this case, the first wire portion 27 is wound around the rotating drum. That Therefore, the first wire portion 27 becomes shorter as the traveling body 18 moves. Then, the pulley 87 shown in FIG. 21 moves upward. When the force shaft 102 reaches the top of the elongated hole 104, further movement is prevented. Accordingly, the tension for winding the first wire 27 is smoothly transmitted to the traveling body 18, and the traveling body 18 moves to the left according to the winding amount.

 [0114] Next, as shown in (2) of FIG. 18, a case where the traveling body 18 is moved to the right side in FIG. 19 will be described.

 [0115] In this case, the second wire portion 28 is wound around the rotating drum. As a result, the first wire portion 27 is fed by the rotating drum force and is easily loosened. In this case, when the first wire portion 27 is loosened, the pulley 87 engaged therewith moves downward by the weight of the weight 89. As a result, at least the tension due to the weight of the weight 89 is constantly generated in the first wire portion 27. For this reason, the winding of the second wire portion 28 can be stably performed without causing a slip of the rotating drum, and the traveling body 18 can be smoothly moved to the right side.

 [0116] In the above second embodiment, if the force heavy-duty conveying device that uses two moving pulleys attached to the traveling body uses only one of carrying in and carrying out heavy objects, Only one moving pulley may be installed and configured!

 [0117] In the second embodiment, the third constant pulley is attached. However, this pulley may not be provided depending on the arrangement of the wires.

 [0118] Furthermore, in the second embodiment described above, a weight type balancer is provided, but instead of this, a constant tension is always obtained by using a spring type balancer, an air cylinder, a spring, a take-up drum, or the like. May be configured to add to the wire.

 [0119] Further, in each of the above embodiments, a balancer is provided to prevent the rotating drum from slipping due to the elongation of the wire, thereby enabling stable operation of the rotating drum. Note that depending on the size of the fixed pulley and the movable pulley and the arrangement of the wires, the decrease in the length of the wire portion on the winding side may be larger than the increase in the length of the wire portion on the feeding side. Even in this case, the difference is absorbed by the function of the nolancer, and a stable operation of the rotating drum is guaranteed.

Industrial applicability As described above, the heavy-duty conveying device according to the present invention is suitable for loading or unloading a long object such as a pipe or a heavy object such as a steel coil into a dry container or the like via a skid. .

Claims

The scope of the claims  [1] A heavy goods transport device for transporting heavy goods,  A frame body (46, 47) extending in the longitudinal direction;  A traveling body (18) installed on the frame body so as to be movable in the longitudinal direction, and for carrying in or carrying out the heavy object;  A first pulley (20) attached to the traveling body;  A wire (26) having one end fixed to the first fixing portion (23) of the frame body and engaging the first movable pulley;  A heavy article transporting apparatus comprising: a rotating drum (34) fixed to the frame body, connected to the other end of the wire, and capable of winding the wire. [2] A second movable pulley (21) attached to the traveling body is further provided,  The wire further extends through the rotating drum, engages with the second movable pulley, and the other end of the wire is fixed to the second fixing portion (24) of the frame body,  The heavy article transport device according to claim 1, wherein the traveling body moves forward or backward depending on a winding direction of the wire by the rotating drum. [3] A first constant pulley (30) that engages with the wire between the first movable pulley and the first fixed portion and is fixed to the frame body;  A second constant pulley (31) engaged with the wire between the first movable pulley and the rotating drum and fixed to the frame body;  The third constant pulley (32) according to claim 2, further comprising a third constant pulley (32) that engages with the wire between the second movable pulley and the second fixing portion and is fixed to the frame body. Heavy goods transport device.  [4] The one end of the wire is connected to the first balancer (35) through the first fixing portion,  4. The heavy article transport device according to claim 3, wherein the other end of the wire passes through the second fixing portion and is connected to the second balancer (36). [5] The wire between the first fixed pulley and the first balancer is provided with first stopper means (61) for preventing movement toward the first fixed pulley, The heavy article according to claim 4, wherein the wire between the second constant pulley and the second balancer is provided with second stopper means (63) for preventing movement toward the second constant pulley. Conveying device.  [6] A heavy goods transport device for transporting heavy goods,  A frame body (83) extending in the longitudinal direction;  A traveling body (18) installed on the frame body so as to be movable in the longitudinal direction, and for carrying in or carrying out the heavy object;  A first pulley (20) attached to the traveling body;  A first fixed pulley (30) fixed to the frame body;  A wire (26) having one end fixed to the traveling body and engaged with the first movable pulley after being engaged with the first fixed pulley;  A heavy article transporting apparatus comprising: a rotating drum (34) fixed to the frame body, connected to the other end of the wire, and capable of winding the wire. [7] A second movable pulley (21) attached to the traveling body, and a second constant pulley (31) fixed to the frame body,  The wire further extends through the rotating drum, engages with the second movable pulley after being engaged with the second movable pulley, and the other end of the wire is fixed to the traveling body. 7. The heavy-duty conveyance device according to claim 6, wherein the heavy-duty conveying device moves forward or backward depending on a winding direction of the wire by the rotating drum. [8] The apparatus according to claim 7, further comprising a third constant pulley (32) that engages with the wire between the first movable pulley and the rotating drum and is fixed to the frame body. Heavy goods transport device.  [9] The first constant pulley is connected to the frame body via a first balancer (35), and the second constant pulley is connected to the frame body via a second balancer (36). The heavy-duty conveyance device according to claim 8. [10] The first balancer is provided with first stopper means (61) for preventing the movement of the first constant pulley toward the first moving pulley. The second balancer prevents the second constant pulley from moving toward the second movable pulley. Second stopper means (63) are provided,