WO2013091320A1 - Adjustable supporting device rolling on annular track and crane containing same - Google Patents

Abstract

Disclosed is an adjustable supporting device rolling on an annular track. The device comprises an annular track (1) on the horizontal plane and a plurality of supporting devices (20), each supporting device (20) comprises a roller (2), a pin shaft (3), a roller seat (4) and an upper assembly support saddle (5), the roller seat (4) is connected with the bottom of the upper assembly support saddle (5), and the roller (2) is connected with the roller seat (4) through the pin shaft (3). The roller (2) part comprises a touching surface in contact with the track (1), the touching surface and the track are matched in shape, and the rollers (2) can roll along the track (1); wherein a vertical height adjusting device is provided between the upper assembly support saddle (5) and the roller seat (4), and used for adjusting the vertical height of each upper assembly support saddle (5). Also disclosed is a crane containing an adjustable supporting device rolling on an annular track. The adjustable supporting device rolling on an annular track can adjust stress distribution of the supporting devices on the annular track, so that it can coordinate stress deformation of the upper assembly, and a wedge structure helps an oil cylinder to realize automatic adjust, thus stress state is reliable due to static friction and self-locking.

Description

 The invention relates to a ring rail adjustable support device and a crane comprising the same. The application is filed on December 21, 2011, and the application number is 201110432393.X, the invention name is "a kind of ring rail adjustable support device and includes The priority of the Chinese Patent Application for the Crane of the Apparatus, the entire contents of which is incorporated herein by reference.

Technical field

 The present invention relates to a support device, and more particularly to a ring-rail adjustable support device and a crane incorporating the same.

Background technique

 The crawler crane is a mobile crane that mounts the lifting work on the crawler chassis and walks on the crawler. Equipment lifting, transportation, handling and installation can be carried out. The crawler crane has the advantages of strong lifting capacity, small grounding pressure, small turning radius, large climbing ability, no need for outriggers, driving on the road, good working stability and free replacement of the truss combination height. Bridges, petrochemicals, water conservancy and hydropower and other construction industries are widely used.

 The known crawler crane is generally composed of a power device, a working device, and a boarding and disembarking vehicle. The boarding vehicle is generally mounted on the vehicle by a slewing bearing, and the entire weight of the boarding vehicle can be transmitted to the vehicle, and the power device is mounted thereon. Hydraulic system, winch, steering mechanism, counterweight and cover. The power unit is driven to the car for 360. turn around.

 As the hoisting capacity of crawler cranes continues to increase, the crane's own body is becoming heavier and heavier, and the axial force and tilting moment acting on the slewing bearing are sharply increased. The slewing bearing is required to have stronger axial load carrying capacity and anti-dip. Turning capacity, but limited by single piece transportation size and manufacturing cost, slewing bearing mechanism has become a bottleneck restricting the development of super large crawler crane technology.

 Generally, the slewing bearing device is divided into a circular orbital type and a roller type, and a circular orbital type slewing bearing device. Compared with the conventional roller type slewing bearing, the slewing bearing device has strong bearing capacity, the structure is easy to realize, and can be detachably transported, but the rotation precision is low. The invention improves the roller slewing bearing in the annular orbital support center to compensate for the rotation precision, and forms a combined slewing bearing mechanism. The circular slewing slewing bearing and the roller slewing bearing of the combined slewing bearing mechanism exist in the vertical direction. Constraint, it is impossible to adjust the support height of the circular track according to the axial force of the slewing bearing and the degree of deformation of the upper vehicle. It is impossible to coordinate the deformation of the upper vehicle under the two states of crane assembly and normal operation.

Summary of the invention

In view of the above problems existing in the existing crawler crane slewing bearing device, the present invention provides a A type of ring rail adjustable support device and a crane including the same.

 The technical solution adopted by the present invention to solve the technical problem is:

 A ring-rail adjustable support device comprising an annular raceway 1 and a plurality of support devices 20 on a horizontal surface, each of the support devices 20 comprising a roller 2, a pin 3, a roller seat 4 and an upper support 5 The roller seat 4 is connected to the bottom of the upper vehicle support 5, and the roller 2 is connected to the roller seat 4 through the pin shaft 3. The roller 2 component includes a rail surface. The track surface is in contact with the raceway 1 and is shaped to match, and the roller 2 is rolled along the raceway 1 , wherein

 A vertical height adjusting device is disposed between the upper vehicle support 5 and the roller seat 4, and the vertical height adjusting device adjusts the vertical height of the upper vehicle support 5.

 The above-mentioned ring-rail adjustable support device, wherein the vertical height adjustment device includes a wedge block

6 and a bevel on the top of the roller seat 4, the wedge block 6 comprising a constricted end, an expanded end, a beveled surface and a top surface opposite to the obliquely facing surface of the wedge block, the bevel of the wedge block 6 and the roller The slopes of the top of the seat 4 abut each other, and the contracted end of the wedge block 6 is in contact with the higher end of the top of the roller seat 4, the expanded end of the wedge block 6 and the top of the roller seat 4 The lower end of the inclined surface contacts, and the top surface of the wedge block 6 is parallel to the horizontal plane;

 The bottom of the upper support 5 is provided with a rectangular parallelepiped cavity 51, and the shape of the wedge block 6 on the roller seat 4 and the roller seat 4 matches the shape of the cavity 51, and the roller seat 4 And the wedge block 6 on the roller seat 4 extends into the cavity 51, and the top surface of the wedge block 6 abuts against the top surface of the inner wall of the cavity 51;

 The wedge block 6 includes a contracted end and an expanded end, and the cavity 51 is provided with a longitudinal opening from a side wall of the inner wall of the cavity 51 at a side of the contracting end side of the wedge block 6, the longitudinal opening width being greater than Equal to the width of the wedge block 6, the converging end of the wedge block 6 projects from the cavity 51 by the longitudinal opening.

 The above-mentioned ring-rail adjustable support device is provided with a pair of bearing pads at the junction of the pin shaft 3 and the roller 2.

 The above-mentioned ring-rail adjustable support device, wherein the upper vehicle support 5 further includes a telescopic mechanism, the telescopic mechanism includes a fixed end and a telescopic end, and the fixed end of the telescopic mechanism is connected to the upper support 5 The telescopic end of the telescopic mechanism is connected to the constricted end of the wedge block 6 extending from the cavity 51.

The above-mentioned ring-rail adjustable support device, wherein the wedge block 6 is provided with a first positioning component, The first positioning member limits horizontal movement of the wedge block 6 relative to the upper vehicle mount 5. The above-mentioned ring-rail adjustable support device, wherein a second positioning member is disposed between the cavity 51 and the roller seat 4, and the second positioning member limits the roller seat 4 to the cavity 51 Move horizontally inside.

 The above-mentioned ring-rail adjustable support device, wherein both sides of the wedge block 6 and the upper vehicle support

The inner wall of the cavity 51 of 5 is gap-fitted.

 The above-mentioned ring-rail adjustable support device, wherein the angle between the top slope of the roller seat 4 and the horizontal plane is smaller than the friction angle of the wedge block 6 and the top slope of the roller seat 4.

 The above-mentioned ring rail adjustable support device, wherein the telescopic mechanism is an oil cylinder.

 The above-mentioned ring-rail adjustable support device, wherein the second positioning member is a stopper, and the stopper is disposed on a side of the longitudinal opening of the cavity 51 and the roller holder 4 in contact with the longitudinal opening The stop blocks the roller seat 4 from moving outwardly of the cavity 51 by the longitudinal opening.

 A crawler crane, comprising the ring-rail adjustable support device of any of claims 1-10.

 The beneficial effects of the invention are:

 The force distribution of each supporting device on the annular raceway can be adjusted to coordinate the deformation of the upper vehicle; the wedge structure is easy to realize, the cylinder is automatically adjusted; the static friction is self-locking, and the force state is reliable.

DRAWINGS

 Figure 1 is a partial perspective view of a ring-rail adjustable support device of the present invention;

 Figure 2 is a cross-sectional view of a support device of a ring-rail adjustable support device of the present invention.

detailed description

 The invention is further illustrated by the following figures and specific examples, but is not to be construed as limiting.

As shown in Figures 1 and 2, a ring-rail adjustable support device of the present invention comprises an annular raceway 1 on a horizontal plane and a plurality of support devices 20, each support device 20 comprising a roller 2, a pin 3, and a roller a sub-seat 4 and an upper support 5, the roller seat 4 is connected to the bottom of the upper support 5, and the roller 2 is connected to the roller seat 4 via a pin 3, and the roller 2 component includes a rail surface, a rail surface and The raceway 1 is in contact with and the shape is matched, and the roller 2 rolls along the raceway 1, thereby driving the support device 20 to move along the raceway 1. The annular raceway 1 can be formed by assembling a plurality of pieces, and the bottom part has connecting parts, and the connecting parts pass the bolts. Connected to the crawler crane; the top of the support has connecting parts, the connecting parts are bolted and tracked The crane is connected to the vehicle; wherein, the vertical height adjustment device is arranged between the upper support 5 and the roller seat 4 of each support device 20, and the vertical height adjustment device adjusts the vertical height of the upper support 5.

 The vertical height adjusting device comprises a wedge block 6 and a bevel 41 at the top of the roller seat 4, the wedge block 6 comprising a constricted end 61, an expanded end 61, a beveled surface 63 and a top surface 64 opposite the obliquely facing side of the wedge block, the beveled surface 63 of the wedge block 6 The inclined surface 41 of the top of the roller seat 4 abuts against each other, and the contracted end 61 of the wedge block 6 is in contact with the higher end 411 of the top inclined surface 41 of the roller seat 4, and the expanded end 62 of the wedge block 6 and the top of the roller seat 4 The lower end 412 of the bevel 41 contacts and the top surface 64 of the wedge block 6 is parallel to the horizontal plane; the vertical height adjustment device operates by moving the wedge block 6 along the slope 41 at the top of the roller seat 4, changing the top of the wedge block 6 The vertical height of the face 64, in turn, acts to adjust the vertical height.

 The bottom of the upper support 5 is provided with a rectangular parallelepiped cavity 51. The shape of the wedge block 6 on the roller seat 4 and the roller seat 4 matches the shape of the cavity 51, and the wedge block 6 on the roller seat 4 and the roller seat 4 Extending into the cavity 51, and causing the top surface 64 of the wedge block 6 to abut against the inner wall top surface 511 of the cavity 51; since the vertical height adjusting device achieves height adjustment by changing the height of the top surface 64 of the wedge block 6, when wedge-shaped When the top surface 64 of the block 6 abuts against the top surface 511 of the inner wall of the cavity 51 at the bottom of the upper vehicle support 5, the height change of the top surface 64 of the wedge block 6 will change the height of the upper vehicle support 5 to realize the present invention. Adjust the height of the upper support 5 for the purpose.

The cavity 51 is disposed at a converging end 61 of the wedge block 6 - the side wall 512 is downwardly provided with a longitudinal opening 510 from the inner wall top surface 511 of the cavity 51. The width of the longitudinal opening 510 is greater than or equal to the width of the wedge block 6, and the contracted end 61 of the wedge block 6 The cavity 51 extends from the longitudinal opening. The longitudinal opening 510 guides and limits the direction of movement of the wedge block 6. Further, the upper support 5 further includes a telescopic mechanism 52. The telescopic mechanism includes a fixed end (not shown) and a telescopic end 521. The fixed end of the telescopic mechanism 52 is coupled to the upper support 5, and the telescopic mechanism 52 The telescopic end 521 is connected to the constricted end 61 of the wedge block 6 extending out of the cavity 51, and the telescopic end 521 of the telescopic mechanism 52 pulls the wedge block 6 to change the horizontal relative position of the wedge block 6 and the upper vehicle support 5 to drive the wedge block 6 Moving along the inclined surface 41 of the roller seat 4 serves to adjust the vertical height of the upper support 5, the telescopic mechanism 52 can be an oil cylinder, and the cylinder control end can be connected with the hydraulic control system of the crawler crane to make the height adjustment control more convenient. Further, the wedge block 6 is provided with a first positioning component 8 that restricts the horizontal movement of the wedge block 6 relative to the upper vehicle support. The first positioning component 8 can be additionally fixed to the upper vehicle support 5 by Positioning structure (not shown in the figure) restricts the horizontal movement of the wedge block 6 relative to the upper support, the first positioning The component 8 can be a positioning plate with a plurality of pin holes, and the positioning structure can be a pair of connecting holes with pin holes, and the first positioning component 8 and the positioning structure are fixed together by a pin shaft, and the positioning plate is more The pin holes can be adapted to different relative positions between the wedge block 6 and the upper car support 5, and the fixing of the first positioning component and the positioning structure can be realized in many ways, which is not described in detail because of the prior art. The purpose of the first positioning member 8 is to prevent the wedge block 6 from moving along the slope 41 of the top of the roller seat 4 when the upper support 5 is subjected to the weight to change the height of the upper support 5. In use, the height of the upper support 5 can be adjusted by moving the wedge block 6, and the wedge block 6 is positioned by the first positioning member 8 when it is adjusted to the required height so that it does not move.

 On the basis of the above, further, a second positioning component is disposed between the cavity 51 and the roller seat 4, and the second positioning component restricts the roller seat 4 from moving horizontally within the cavity 51. For example, the second positioning component may be a block. Block 9, the stopper 9 is disposed on a side of the longitudinal opening 510 of the cavity 51 and the roller seat 4 in contact with the longitudinal opening 510, and the stopper 9 blocks the roller seat 4 from moving outward from the longitudinal opening to the cavity 51, the stopper 9 The highest end is lower than the lowest position of the expanded end 62 of the wedge block 6 to prevent the movement of the wedge block 6 from being affected.

 Further, the two sides of the wedge block 6 are gap-fitted with the inner wall of the cavity 51 of the upper vehicle support 5, so that the wedge block 6 does not move along the inclined surface 41 of the roller holder 4 when the roller block 4 moves. The inner wall of the cavity 51 of the upper support 5 generates unnecessary friction.

 Further, wherein the angle between the top slope of the roller seat 4 and the horizontal plane is smaller than the friction angle of the wedge block 6 and the top slope 41 of the roller seat 4, so that the wedge block 6 can be self-locked to the top of the roller seat under normal conditions. On the inclined surface 41.

 Further, a joint between the pin 3 and the roller 2 is provided with a pair of bearing bushes 21, the pin shaft 3 and the bearing bush 21 are in an interference fit, and the inner hole of the bearing bush 21 is provided with an oil groove (not shown in the figure), by adding Lubricating oil maintains lubrication between the bearing pads 21 and other working components.

 The present invention also includes a crawler crane including a ring rail adjustable support device as described above.

 The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention. Therefore, equivalent structural changes made by using the specification and the description of the present invention are included in the scope of the present invention. .

Claims

Rights request  A ring-rail adjustable support device comprising an annular raceway (1) on a horizontal surface and a plurality of support devices (20), each of said support devices (20) comprising a roller (2), a pin (3) a roller seat (4) and an upper support (5), the roller seat (4) being coupled to a bottom of the upper support (5), the roller (2) passing through the pin (3) connected to the roller seat (4), the roller (2) component includes a rail surface, the rail surface is in contact with the raceway (1) and the shape is matched, the roller ( 2) rolling along the raceway (1), characterized in that  A vertical height adjusting device is disposed between the upper vehicle support (5) and the roller seat (4), and the vertical height adjusting device adjusts a vertical height of the upper vehicle support (5).  2. The ring-rail adjustable support device according to claim 1, wherein said vertical height adjusting device comprises a wedge block (6) and a slope of a top portion of said roller seat (4), said wedge block (6) a converging end, a diverging end, a bevel, and a top surface facing away from the obliquely facing surface of the wedge block, the bevel of the wedge block (6) and the bevel of the top of the roller seat (4) being mutually offset, and The constricted end of the wedge block (6) is in contact with the higher end of the top surface of the roller seat (4), and the expanded end of the wedge block (6) and the top bevel of the roller seat (4) are lower One end of the contact, and the top surface of the wedge block (6) is parallel to the horizontal plane;  The bottom of the upper support (5) is provided with a rectangular parallelepiped cavity (51), and the shape of the wedge block (6) on the roller seat (4) and the roller seat (4) and the cavity (51) shape matching, the roller seat (4) and the wedge block (6) on the roller seat (4) project into the cavity (51), and the wedge block (6) a top surface abutting the top surface of the inner wall of the cavity (51);  The cavity (51) is provided with a longitudinal opening on a side wall of the constricted end side of the wedge block (6) from a top surface of the inner wall of the cavity (51), and the longitudinal opening width is greater than or equal to the wedge block ( 6) The width of the tapered end of the wedge block (6) projects from the cavity (51) by the longitudinal opening.  The ring-rail adjustable support device according to claim 1, characterized in that a pair of bearing pads are provided at the junction of the pin (3) and the roller (2).  The ring-rail adjustable support device according to claim 2, wherein the upper vehicle support (5) further comprises a telescopic mechanism, and the telescopic mechanism comprises a fixed end and a telescopic end, and the telescopic mechanism The fixed end is connected to the upper vehicle support (5), and the telescopic end of the telescopic mechanism is connected to the constricted end of the wedge block (6) protruding from the cavity (51). 5. The ring-rail adjustable support device according to claim 2, wherein the wedge block (6) A first positioning member is provided, the first positioning member restricting horizontal movement of the wedge block (6) relative to the upper vehicle support (5).  The ring-rail adjustable support device according to claim 2, wherein a second positioning member is disposed between the cavity (51) and the roller seat (4), and the second positioning member The roller seat (4) is restricted from moving horizontally within the cavity (51).  7. The ring-rail adjustable support device according to claim 2, characterized in that both sides of the wedge block (6) are clearance-fitted with the inner wall of the cavity (51) of the upper vehicle support (5).  The ring-rail adjustable support device according to claim 2, wherein an angle between a top slope of the roller seat (4) and a horizontal plane is smaller than the wedge block (6) and the roller seat (4) The friction angle of the top bevel.  The ring-rail adjustable support device according to claim 4, wherein the telescopic mechanism is oil red.  10. The ring-rail adjustable support device according to claim 6, wherein the second positioning member is a stopper, and the stopper is disposed at a longitudinal opening of the cavity (51) and the roller The seat (4) is in contact with the longitudinal opening, the stop blocking movement of the roller seat (4) from the longitudinal opening to the outside of the cavity (51).  A crawler crane, comprising a ring rail adjustable support device according to any of claims 1-10.