WO2024250365A1 - Gantry crane - Google Patents

Abstract

A gantry crane, comprising: a gantry crane body; a pair of hook stabilizing mechanisms (100) which are oppositely arranged on cross beams (2) on supporting legs (1) of the gantry crane body, wherein each hook stabilizing mechanism (100) comprises a lifting/lowering structure (11) fixed on the cross beam (2), a telescopic structure (12) fixed to a lifting/lowering end of the lifting/lowering structure (11), and an abutting block (13) rotatably connected to a telescopic end of the telescopic structure (12), and the telescopic ends of the telescopic structures (12) are arranged towards the center of the gantry crane body; and a bearing mechanism (200), which is fitted on a lifting rope (3) of the gantry crane body and is arranged close to a lifting tool (4) of the gantry crane body, wherein the bearing mechanism (200) has a certain free rotation space relative to the lifting rope (3) in the horizontal direction. The height of the lifting/lowering end of the lifting/lowering structure (11) and the stretching length of the telescopic end of the telescopic structure (12) are adjusted, and the abutting blocks (13) of the pair of hook stabilizing mechanisms (100) oppositely abut against the side walls of the bearing mechanism (200). According to the gantry crane, items are tightly locked and stably suspended by the pair of hook stabilizing mechanisms (100) and the bearing mechanism (200), so that the beneficial effect of the wind resistance of the gantry crane is improved.

Description

Gantry crane Technical Field

The present invention relates to the technical field of wind protection for gantry cranes, and more specifically, to a gantry crane.

Background Art

Gantry crane generally refers to a gantry crane, or a bridge crane, which is a crane running on tracks. The crane runs longitudinally on the tracks laid on both sides, and the crane's bridge runs horizontally on the tracks, forming a rectangular working range, so that materials can be lifted using the space under the bridge without being hindered by ground equipment. The characteristic of the crane is that it can make the heavy objects hung on the spreader (hook or other picking device) realize vertical lifting or horizontal movement in space. Cranes are widely used in indoor and outdoor warehouses, factories, docks and open storage yards.

In high-altitude areas, during open-air production, there is a sudden strong wind. If the gantry crane cannot be effectively braked in a short period of time, the object will sway due to movement, wind or other external forces, and slide or roll on the track under the action of strong wind. When it collides with foreign objects, the gantry crane will overturn and cause damage to the equipment and cause certain damage to nearby structures and personnel. Also, during the hoisting movement of the gantry crane, since the hoisted workpiece is often heavy and the hoisting rope is long, it is easy for the hoisted workpiece to hit the supporting legs of the gantry crane due to inertial swing, resulting in serious accidents. Therefore, in strong wind operation areas, it is important to improve the wind resistance of the gantry crane.

Summary of the invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

In order to achieve these purposes and other advantages according to the present invention, a gantry crane is provided, comprising:

Gantry crane body;

A pair of stabilizing hook mechanisms, the pair of stabilizing hook mechanisms are relatively arranged on the cross beams on the legs of the gantry crane body, the stabilizing hook mechanisms include a lifting structure fixed on the cross beam, a telescopic structure fixed on the lifting end of the lifting structure, and a stopper rotatably connected to the telescopic end of the telescopic structure, wherein the telescopic end of the telescopic structure is arranged toward the center of the gantry crane body;

A receiving mechanism, which is sleeved on the suspension rope of the gantry crane body and is arranged close to the suspension device of the gantry crane body, and the receiving mechanism has a certain free rotation space in the horizontal direction relative to the suspension rope;

Wherein, the height of the lifting end of the lifting structure and the telescopic length of the telescopic end of the telescopic structure are adjusted, and a pair of stable The abutment block of the hook structure is relatively abutted against the side wall of the receiving mechanism.

Preferably, at least two groups of buffer mechanisms are further included, and the two groups of buffer mechanisms are respectively arranged on the lifting ends of a pair of lifting structures in a relatively opposite manner, and the buffer mechanisms include:

A rotating column, which is rotatably connected to the lifting end of the lifting structure, and a limiting plate is provided on the top of the rotating column;

A lower card plate, which is fixed on the rotating column, and is provided with a plurality of slide grooves arranged radially along the rotating column, a slider is slidably provided on the slide groove, and a buffer plate is hinged on the slider;

An upper clamping plate, which is movably sleeved on the rotating column, and the upper clamping plate is hinged to the other side of the plurality of buffer plates one by one, and the upper side of the buffer plate is close to the rotating column, and the lower side is far away from the rotating column;

The two ends of the vertical spring are respectively fixed on the lower clamping plate and the upper clamping plate.

Preferably, the receiving mechanism includes an outer shell having a vertically penetrating passage formed on the outer shell, the passage being movably sleeved on the outside of the sling, and a plurality of chains being provided on the upper and lower surfaces of the outer shell, the other ends of the chains being fixed on the sling.

Preferably, the receiving mechanism further comprises a power supply box and a U-shaped electromagnet arranged in the outer shell, and a power supply arranged in the power supply box for supplying power to the U-shaped electromagnet;

The abutment block is hollow and contains magnets. The magnetic poles of the magnets in the two abutment blocks facing each other are opposite, and the magnetic poles of the U-shaped electromagnet after power is supplied are also opposite.

Preferably, a plurality of circular holes are formed on the bottom surface of the outer shell, an inner shell is provided in the outer shell, and the U-shaped electromagnet is accommodated in the inner shell.

Preferably, the portions of the outer shell corresponding to the two magnetic poles of the U-shaped electromagnet are recessed inward to form a groove, and the inner side wall of the groove is in contact with the inner shell.

Preferably, it further comprises a plurality of transverse springs, which are correspondingly arranged in a plurality of slide grooves, and two ends of the transverse springs are respectively fixed to one end of the slide groove close to the rotating column and the sliding block.

Preferably, the buffer plate is fan-shaped, and a plurality of buffer plates form a truncated cone-shaped structure that is smaller at the top and larger at the bottom.

Preferably, each group of buffer mechanisms includes two buffer mechanisms, and are arranged relatively on both sides of the stabilizing hook mechanism along the direction of the gantry crane track.

Preferably, the lifting structure and the telescopic structure are both electric jacks.

The present invention has at least the following beneficial effects:

First, by designing a pair of stabilizing hook mechanisms, when there is wind force, the height of the lifting end of the lifting structure and the telescopic length of the telescopic end of the telescopic structure are adjusted, and the abutment blocks of a pair of stabilizing hook structures are relatively abutted against the side walls of the receiving mechanism to achieve the purpose of stabilizing the suspended objects.

Second, by designing two sets of buffer mechanisms and combining them with the lifting structure in the stabilizing hook mechanism, the buffering effect of different wind forces can be adapted to achieve the purpose of stabilizing the gantry crane and preventing it from tipping over.

Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the side structure of the gantry crane according to one technical solution of the present invention;

FIG2 is a front structural schematic diagram of the gantry crane according to one technical solution of the present invention;

FIG2 is a front structural schematic diagram of the gantry crane according to one technical solution of the present invention;

FIG3 is a detailed diagram of the receiving mechanism of one technical solution of the present invention;

FIG4 is a schematic structural diagram of the U-shaped electromagnet according to one technical solution of the present invention;

FIG5 is a top view of the buffer mechanism according to one technical solution of the present invention in a windless state;

FIG6 is a top view of the buffer mechanism according to one technical solution of the present invention in a strong wind state;

FIG. 7 is a top view of the lower card plate of one of the technical solutions of the present invention.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

As shown in FIGS. 1 to 7 , the meanings of the reference numerals in the specification of the present invention are as follows: support leg 1, cross beam 2, lifting rope 3, lifting device 4, hook stabilizing mechanism 100, lifting structure 11, telescopic structure 12, stop block 13, receiving mechanism 200, outer shell 21, chain 22, power supply box 23, U-shaped electromagnet 24, inner shell 25, groove 26, buffer mechanism 300, mounting plate 14, rotating column 31, Limiting plate 32 , lower clamping plate 33 , sliding groove 34 , sliding block 35 , buffer plate 36 , upper clamping plate 37 , vertical spring 38 , transverse spring 39 , track 5 .

As shown in FIGS. 1 to 7 , the present invention provides a gantry crane, comprising:

The gantry crane body comprises a support leg 1, a crossbeam 2, a lifting rope 3 and a lifting device 4, wherein the lifting device 4 is usually a lifting hook;

A pair of stabilizing hook mechanisms 100 are relatively arranged on the crossbeam 2 on the legs 1 of the gantry crane body. The stabilizing hook mechanisms 100 include a lifting structure 11 fixed on the crossbeam 2, a telescopic structure 12 fixed on the lifting end of the lifting structure 11, and a stopper 13 rotatably connected to the telescopic end of the telescopic structure 12, wherein the telescopic end of the telescopic structure 12 is arranged toward the center of the gantry crane body; the lifting structure 11 and the telescopic structure 12 usually adopt electric jacks or electric cylinders. The advantage of the electric jack is that the bearing capacity is stronger and can match the heavy objects suspended in the sling 4. The stopper 13 is used to cooperate with the receiving structure to transmit the contact force applied by the telescopic structure 12 and reduce the shaking of the receiving structure. The stopper 13 and the lifting end of the lifting structure 11 are both provided with lugs with holes, and the lugs with holes are connected together by a pin shaft to achieve a rotational connection. The rotation connection allows a certain amount of free movement space between the stop block 13 and the lifting structure 11, thereby reducing hard collisions between the stop block 13 and the receiving mechanism.

The receiving mechanism 200 is sleeved on the suspension rope 3 of the gantry crane body and is arranged near the sling 4 of the gantry crane body. The receiving mechanism 200 has a certain free rotation space in the horizontal direction relative to the suspension rope 3; the receiving mechanism 200 is used to provide a force-bearing position between the stop block 13 and the suspension rope 3, so as to stabilize the position of the suspension rope 3 through the hook stabilizing mechanism 100, and finally stabilize the suspended objects to prevent the objects from shaking under the action of strong winds. The receiving mechanism 200 is arranged close to the objects, so that the point of action is close to the suspended objects, thereby significantly reducing the amplitude of the shaking of the objects. When the wind force is too strong, the setting of the receiving mechanism 200 having a certain free rotation space in the horizontal direction relative to the suspension rope 3 can allow the receiving mechanism 200 to rotate, while the suspension rope 3 remains in its original position, which has a certain buffering force effect.

When there is wind, the height of the lifting end of the lifting structure 11 and the telescopic length of the telescopic end of the telescopic structure 12 are adjusted, and a pair of abutment blocks 13 of the stabilizing hook structure are relatively abutted against the side wall of the receiving mechanism 200 to achieve the purpose of stabilizing the suspended objects.

The receiving mechanism 200 can be a pair of steel plates, or other components that can contact the stopper 13. The present invention preferably has an outer shell 21, which is provided with a vertically penetrating channel, and the channel is movably sleeved on the outside of the sling 3. The upper and lower surfaces of the outer shell 21 are provided with a plurality of chains 22, and the other ends of the chains 22 are fixed to the sling 3. The outer shell 21 exists in the form of a wider contact surface, which is convenient for the stopper 13 to quickly contact and abut. The connection method using the chain 22 can fix the outer shell 21 to the sling 3, and can also satisfy that the outer shell 21 has sufficient freedom in the horizontal direction.

Furthermore, the receiving mechanism 200 also includes a power box 23 and a U-shaped electromagnet 24 arranged in the outer shell 21, and a power supply arranged in the power box 23 for supplying power to the U-shaped electromagnet 24; when the power switch is turned on, the U-shaped electromagnet 24 is powered, and the U-shaped electromagnet 24 generates magnetism, and the two ends of the U-shaped electromagnet 24 are respectively an N pole and an S pole, and the N pole and the S pole are respectively close to the opposite side walls of the outer shell 21, and the U-shaped electromagnet 24 is placed horizontally, and the empty space in the middle of the U-shaped electromagnet 24 can be freely passed through by the suspension rope 3 without affecting the operation of the suspension rope 3. The switch of the power supply of the U-shaped electromagnet 24 can be remotely controlled, such as the infrared controller induction switch commonly used in the prior art. The power supply adopts a storage lithium battery, and the remote control and storage lithium battery methods can reduce the line routing.

The abutment 13 is hollow, and contains magnets, and the magnetic poles of the magnets in the two abutment 13 facing each other are opposite, and the magnetic poles of the U-shaped electromagnet 24 after power is turned on are also opposite. Magnets are also arranged on the abutment 13 on both sides of the outer shell 21, and the magnetic poles are matched to achieve magnetic attraction between the two abutment 13 and the two sides of the outer shell 21, respectively. This can not only enhance the abutment force, but also guide and adjust the outer shell 21 from the deviated position due to the effect of magnetic attraction when the abutment 13 has not yet abutted against the outer shell 21, and is more conducive to the smooth contact between the abutment 13 and the outer shell 21.

Furthermore, a plurality of circular holes are formed on the bottom surface of the outer shell 21, and an inner shell 25 is provided inside the outer shell 21. The inner shell 25 accommodates the U-shaped electromagnet 24. When it rains, rainwater enters the outer shell 21 and can be quickly discharged from the circular holes. The U-shaped electromagnet 24 is protected in the inner shell 25 to reduce damage to the U-shaped electromagnet 24.

Furthermore, the parts of the outer shell 21 corresponding to the two magnetic poles of the U-shaped electromagnet 24 are recessed inward to form a groove 26, and the inner wall of the groove 26 is in contact with the inner shell 25. When the stop block 13 is in contact with the outer shell 21, the stop block 13 can be guided to contact the position of the groove 26, which is closer to the U-shaped electromagnet 24 and has a stronger magnetic attraction.

It also includes at least two groups of buffer mechanisms 300, which are respectively arranged on the lifting ends of a pair of lifting structures 11. A mounting plate 14 is arranged on the lifting ends, and the fixed end of the telescopic structure 12 is mounted on the mounting plate 14. The outer position of the mounting plate 14 is used to install the buffer mechanism 300, so that the height of the buffer mechanism 300 can be adjusted by adjusting the lifting structure 11 to adapt to the buffering effect of different wind forces.

The buffer mechanism 300 comprises:

The rotating column 31 is rotatably connected to the mounting plate 14 of the lifting structure 11, and a limit plate 32 is provided on the top of the rotating column 31. A bearing is provided on the mounting plate 14, and the lower end of the rotating column 31 is fixed on the bearing to achieve a rotatable connection. The limit plate 32 is preferably a circular plate fixed on the top of the rotating column 31, and is used to limit the upper clamping plate 37 from detaching from the rotating column 31 under the action of elastic force.

The lower clamping plate 33 is fixed on the rotating column 31 and is arranged near the lower end of the rotating column 31. The lower clamping plate 33 is provided with a plurality of A slide groove 34 is arranged radially along the rotating column 31, and a slider 35 is slidably arranged on the slide groove 34, and a buffer plate 36 is hinged on the slider 35. Lugs with holes are arranged on the lower end of the buffer plate 36 and the slider 35, and then connected by a pin shaft to achieve hinge connection; the slider 35 can slide back and forth on the slide groove 34, driving the lower end of the buffer plate 36 to slide back and forth along the radial direction of the rotating column 31 and rotate at the same time.

The upper clamping plate 37 is movably mounted on the rotating column 31. The upper clamping plate 37 can move up and down along the axis of the rotating column 31. The upper clamping plate 37 is hinged to the other side of the plurality of buffer plates 36 one by one. Lugs with holes are provided on the upper end of the buffer plate 36 and the outer periphery of the upper clamping plate 37, and then connected by a pin shaft to achieve hinge connection. When the lower end of the buffer plate 36 slides back and forth along the radial direction of the rotating column 31, the upper end of the buffer plate 36 rotates and moves up and down along the axial direction of the rotating column 31. The upper side of the buffer plate 36 is close to the rotating column 31, and the lower side is away from the rotating column 31. The buffer plate 36 is in an inclined state and is used to guide and induce air;

The vertical spring 38, whose two ends are respectively fixed on the lower clamping plate 33 and the upper clamping plate 37, is a key component for realizing the buffer plate 36 to buffer the wind force. When the buffer plate 36 is subjected to the pressure of wind force, the upper end of the buffer plate 36 presses the vertical spring 38 downward and rotates at the same time, forcing the lower end of the buffer plate to slide radially outward and rotate at the same time, thereby playing the role of buffering the wind force. The ultimate source of the counterforce for the buffer plate 36 is the mounting plate 14 and the gantry crane body, thereby achieving the role of stabilizing the gantry crane and preventing it from tipping over. When there is no wind force, the buffer plate 36 moves upward under the elastic force of the vertical spring 38 until the upper clamping plate 37 abuts against the limit plate 32, and the lower end of the buffer plate 36 returns to the initial position along the slide groove 34.

Furthermore, it also includes a plurality of transverse springs 39, which are correspondingly arranged in the plurality of slide slots 34, and the two ends of the transverse spring 39 are respectively fixed to one end of the slide slot 34 close to the rotating column 31 and the slider 35. The transverse spring 39 is used to enhance the buffering force, and the transverse spring 39 increases the force required when the buffer plate 36 slides outward along the slide slot 34.

Furthermore, the buffer plates 36 are fan-shaped, and multiple buffer plates 36 form a truncated cone-shaped structure with a small top and a large bottom, which increases the contact area with the wind, thereby enhancing the strong buffering effect. A certain gap is set between two adjacent buffer plates 36 to avoid mutual interference when the buffers move and rotate.

Furthermore, the two buffer mechanisms 300 are relatively arranged on the mounting plate 14, which can buffer the wind coming from both sides of the gantry crane body.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims (10)

The gantry crane is characterized by comprising: Gantry crane body; A pair of stabilizing hook mechanisms, the pair of stabilizing hook mechanisms are relatively arranged on the cross beams on the legs of the gantry crane body, the stabilizing hook mechanisms include a lifting structure fixed on the cross beam, a telescopic structure fixed on the lifting end of the lifting structure, and a stopper rotatably connected to the telescopic end of the telescopic structure, wherein the telescopic end of the telescopic structure is arranged toward the center of the gantry crane body; A receiving mechanism, which is sleeved on the suspension rope of the gantry crane body and is arranged close to the suspension device of the gantry crane body, and the receiving mechanism has a certain free rotation space in the horizontal direction relative to the suspension rope; Wherein, the height of the lifting end of the lifting structure and the telescopic length of the telescopic end of the telescopic structure are adjusted, and a pair of abutment blocks of the stabilizing hook structure are relatively abutted against the side wall of the receiving mechanism. The gantry crane according to claim 1 is characterized in that it also includes at least two groups of buffer mechanisms, the two groups of buffer mechanisms are respectively arranged on the lifting ends of a pair of lifting structures in a relatively opposite manner, and the buffer mechanisms include: A rotating column, which is rotatably connected to the lifting end of the lifting structure, and a limiting plate is provided on the top of the rotating column; A lower card plate, which is fixed on the rotating column, and is provided with a plurality of slide grooves arranged radially along the rotating column, a slider is slidably provided on the slide groove, and a buffer plate is hinged on the slider; An upper clamping plate, which is movably sleeved on the rotating column, and the upper clamping plate is hinged to the other side of the plurality of buffer plates one by one, and the upper side of the buffer plate is close to the rotating column, and the lower side is far away from the rotating column; The two ends of the vertical spring are respectively fixed on the lower clamping plate and the upper clamping plate. The gantry crane as described in claim 1 is characterized in that the receiving mechanism includes an outer shell, the outer shell is provided with a channel running through from top to bottom, the channel is movably mounted on the outside of the lifting rope, and a plurality of chains are provided on the upper and lower surfaces of the outer shell, and the other ends of the chains are fixed to the lifting rope. The gantry crane according to claim 3, characterized in that the receiving mechanism further comprises a power box and a U-shaped electromagnet arranged in the outer shell, and a power supply arranged in the power box to supply power to the U-shaped electromagnet; The abutment block is hollow, contains magnets, and the magnets in the two abutment blocks face each other. The magnetic poles of the surface are opposite, and the magnetic poles of the U-shaped electromagnet after power is supplied are also opposite accordingly. The gantry crane as described in claim 4 is characterized in that a plurality of circular holes are opened on the bottom surface of the outer shell, an inner shell is arranged in the outer shell, and the U-shaped electromagnet is accommodated in the inner shell. The gantry crane as described in claim 5 is characterized in that the parts of the outer shell corresponding to the two magnetic poles of the U-shaped electromagnet are recessed inward to form a groove, and the inner wall of the groove is in contact with the inner shell. The gantry crane as described in claim 2 is characterized in that it also includes a plurality of transverse springs, and the plurality of transverse springs are correspondingly arranged in a plurality of slide grooves, and the two ends of the transverse springs are respectively fixed to one end of the slide groove close to the rotating column and the sliding block. The gantry crane as described in claim 2 is characterized in that the buffer plate is fan-shaped, and multiple buffer plates form a truncated cone-shaped structure that is small at the top and large at the bottom. The gantry crane as described in claim 2 is characterized in that each group of buffer mechanisms includes two buffer mechanisms, and are relatively arranged on both sides of the stabilizing hook mechanism along the direction of the gantry crane track. The gantry crane as described in claim 1 is characterized in that the lifting structure and the telescopic structure are both electric jacks.