Steel truss girder dragging and sliding structure

Abstract

The utility model relates to a steel truss girder dragging and sliding structure, and relates to the technical field of bridge construction. The steel truss girder dragging and sliding structure comprises a slide way beam, a first leveling plate, a plurality of sliding shoes and a plurality of lubricating assemblies. The slideway beam is positioned below the steel truss girder; the first leveling plate is arranged at the top of the slideway beam; the multiple sliding shoes are movably arranged on the first leveling plate, are arranged at intervals in the length direction of the slide way beam, are located between the first leveling plate and the steel truss girder and are connected with the steel truss girder; the multiple lubricating assemblies correspond to the multiple sliding shoes one to one, the lubricating assemblies are arranged on the corresponding sliding shoes and located in the moving direction of the sliding shoes, and the lubricating assemblies are used for smearing lubricating oil on the contact faces of the sliding shoes and the first leveling plate. According to the technical scheme, the problem that an existing steel truss girder cannot slide smoothly due to the fact that static friction force of the contact face of the sliding block of the sliding device and the steel truss girder is insufficient can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel truss girder dragging and sliding structure. Background Art

[0002] Steel structure bridges have the advantages of high strength, light weight, good toughness and easy installation. During the erection of steel trusses of steel structure bridges, the top-pushing and dragging erection method is often adopted, which can effectively overcome the limitations of terrain conditions, especially canyons, large rivers, lakes and oceans, thereby ensuring the smooth progress of the project.

[0003] During the dragging process of the steel truss, a sliding device needs to be set under the steel truss, and the sliding device is driven by the power system to realize the sliding of the steel truss. However, the static friction between the slider of the sliding device and the contact surface of the steel truss is often insufficient, resulting in the static friction force being less than the pulling force provided by the power system, resulting in the steel truss being unable to slide smoothly. Utility Model Content

[0004] The embodiment of the present application provides a steel truss dragging and sliding structure, which can solve the problem that the existing steel truss cannot slide smoothly due to insufficient static friction between the slider of the sliding device and the contact surface of the steel truss.

[0005] In a first aspect, an embodiment of the present application provides a steel truss girder dragging and sliding structure, comprising:

[0006] The slide beam is located below the steel truss beam;

[0007] A first leveling plate, disposed on the top of the slideway beam;

[0008] a plurality of sliding shoes, movably disposed on the first flat plate, the plurality of sliding shoes being arranged at intervals along the length direction of the slideway beam, the sliding shoes being located between the first flat plate and the steel truss beam and connected to the steel truss beam; and

[0009] A plurality of lubrication components correspond to the plurality of sliding shoes respectively, the lubrication components are arranged on the corresponding sliding shoes and are located in the moving direction of the sliding shoes, and the lubrication components are used to apply lubricating oil to the contact surface between the sliding shoes and the first flat plate.

[0010] In one embodiment, the lubrication assembly comprises:

[0011] A support frame, detachably disposed at one end of the sliding shoe;

[0012] A funnel is arranged on the support frame, an opening is arranged at the bottom of the funnel, and the funnel is used to hold lubricating oil;

[0013] a flow switch, disposed at the opening of the funnel; and

[0014] A roller brush is rotatably arranged on the support frame, and the roller brush is located below the funnel.

[0015] In one embodiment, the sliding shoe comprises:

[0016] a load-bearing plate, movably disposed on the first flat plate; and

[0017] A plurality of tie rods are respectively arranged at the corners of the load-bearing plate, one end of the tie rod is connected to the steel truss beam and the other end is connected to the load-bearing plate.

[0018] In one embodiment, the steel truss girder dragging and sliding structure further comprises:

[0019] A plurality of transverse limiting components, corresponding to the plurality of sliding shoes respectively, the transverse limiting components are arranged on the corresponding sliding shoes to limit the displacement of the sliding shoes in the width direction;

[0020] A plurality of longitudinal limit assemblies correspond to the plurality of sliding shoes respectively, and the longitudinal limit assemblies are arranged on the corresponding sliding shoes.

[0021] In one embodiment, the transverse limiting assembly includes two transverse blocks, which are arranged at the bottom of the load-bearing plate and are respectively located on both sides of the slide beam, and the transverse blocks extend along the length direction.

[0022] In one embodiment, the longitudinal limiting assembly includes two longitudinal blocks, which are arranged at intervals along the length direction and are respectively located on both sides of the load-bearing plate, and the longitudinal blocks extend along the width direction.

[0023] In one embodiment, the sliding shoe further comprises a second flat plate disposed at the bottom of the steel truss, and the second flat plate is located in a limiting area formed by the two transverse stoppers and the two longitudinal stoppers.

[0024] In one embodiment, the second planar plate is an MGE slide plate.

[0025] In one embodiment, the steel truss towing and lateral movement structure further includes a plurality of pads, and the plurality of pads correspond one-to-one to the plurality of sliding shoes respectively, and the top of the pad is connected to the steel truss and the bottom is connected to the corresponding sliding shoe.

[0026] In one embodiment, the first flat plate is a stainless steel plate.

[0027] Compared with the prior art, the advantages of the embodiments of the present application are that, by connecting the sliding shoe to the steel truss, the steel truss can move together with the sliding shoe, thereby ensuring that the steel truss can slide smoothly, solving the problem that the static friction between the contact surface between the slider and the steel truss of the existing sliding device is insufficient, causing the static friction to be less than the pulling force provided by the power system, and causing the steel truss to be unable to slide smoothly. By setting the first flat plate to improve the flatness of the slideway beam, the dragging friction is reduced, and the "jumping phenomenon" during the dragging process is avoided, and lubricating oil is applied between the sliding shoe and the first flat plate through the lubrication component, the dragging friction is further reduced, and the smooth sliding of the sliding shoe and the steel truss is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0029] Figure 1 This is a front view of a steel truss girder dragging and sliding structure provided by an embodiment of the utility model;

[0030] Figure 2 yes Figure 1 A schematic diagram of the structure of the sliding shoe provided in the embodiment;

[0031] Figure 3 yes Figure 1 A left view of the steel truss girder dragging and sliding structure provided in the embodiment;

[0032] Figure 4 yes Figure 1 A right side view of the lubrication assembly provided in the embodiment;

[0033] Figure 5 yes Figure 1 A front view of the lubrication assembly provided in the embodiment.

[0034] Reference numerals:

[0035] 10. slideway beam; 110. reinforcing rib plate;

[0036] 20. Steel truss;

[0037] 30. The first leveling plate;

[0038] 40, sliding shoe; 410, bearing plate; 420, tie rod; 430, boss;

[0039] 50, lubrication assembly; 510, support frame; 520, funnel; 530, flow switch; 540, roller brush;

[0040] 60. lateral limit assembly; 610. lateral stopper; 620. lateral reinforcement plate;

[0041] 70. Longitudinal limit assembly; 710. Longitudinal stop block;

[0042] 80. Second leveling plate;

[0043] 90. Pad. DETAILED DESCRIPTION

[0044] The utility model will be further described below in conjunction with the accompanying drawings.

[0045] Steel structure bridges have the advantages of high strength, light weight, good toughness and easy installation. During the erection of steel trusses of steel structure bridges, the top-pushing and dragging erection method is often adopted, which can effectively overcome the limitations of terrain conditions, especially canyons, large rivers, lakes and oceans, thereby ensuring the smooth progress of the project.

[0046] During the dragging process of the steel truss, a sliding device needs to be set under the steel truss. The sliding device includes a slide beam laid on the top of the pier along the bridge direction and a plurality of sliders movably set on the slide beam. The steel truss is placed on the slider. The power system is set at one end of the slide beam. The power system is connected to the slider through a steel strand, and the slider is pulled to slide along the slide beam to slide the steel truss to a specified position. However, the sliding device is driven by the power system to achieve the sliding of the steel truss, but the static friction between the slider of the sliding device and the contact surface of the steel truss is often insufficient, resulting in the static friction being less than the pulling force provided by the power system, resulting in the steel truss failing to slide smoothly.

[0047] Embodiment 1

[0048] like Figure 1 , Figure 2 As shown, in order to solve the above-mentioned technical problems, an embodiment of the present application provides a steel truss 20 dragging and sliding structure, including a slide beam 10, a first flat plate 30, a plurality of sliding shoes 40 and a plurality of lubrication components 50; the slide beam 10 is located below the steel truss 20; the first flat plate 30 is arranged on the top of the slide beam 10; a plurality of sliding shoes 40 are movably arranged on the first flat plate 30, and a plurality of sliding shoes 40 are arranged at intervals along the length direction of the slide beam 10, and the sliding shoes 40 are located between the first flat plate 30 and the steel truss 20 and are connected to the steel truss 20; a plurality of lubrication components 50 respectively correspond to a plurality of sliding shoes 40, the lubrication components 50 are arranged on the corresponding sliding shoes 40 and in the moving direction of the sliding shoes 40, and the lubrication components 50 are used to apply lubricating oil to the contact surface between the sliding shoes 40 and the first flat plate 30.

[0049] As can be seen from the above, by connecting the sliding shoe 40 with the steel truss 20, the steel truss 20 can move together with the sliding shoe 40, thereby ensuring that the steel truss 20 can slide smoothly, solving the problem that the static friction between the contact surface of the slider and the steel truss 20 of the existing sliding device is insufficient, causing the static friction to be less than the pulling force provided by the power system, resulting in the steel truss 20 being unable to slide smoothly. By setting the first flattening plate 30 to improve the flatness of the slideway beam 10, the dragging friction is reduced, and the "jumping phenomenon" during the dragging process is avoided, and lubricating oil is applied between the sliding shoe 40 and the first flattening plate 30 by the lubrication component 50, the dragging friction is further reduced, and the smooth sliding of the sliding shoe 40 and the steel truss 20 is ensured.

[0050] It should be noted that, during towing, a power system can be set at one end of the slide beam 10, and the power system is connected to the sliding shoe 40 through a steel strand, and the sliding shoe 40 is pulled along the slide beam 10 to slide the steel truss 20 to a specified position, thereby achieving towing of the steel truss 20; the power system includes but is not limited to a cylinder.

[0051] It should also be noted that the cross-section of the slide beam 10 is formed by welding three I-beams, and the slide beam 10 is provided with a plurality of spaced reinforcing ribs 110 in the length direction, and the reinforcing ribs 110 are welded to the web of the I-beam, thereby improving the strength and reliability of the slide beam 10.

[0052] It should also be noted that if Figure 1 , Figure 2 As shown, the length direction is parallel to the X direction, and the width direction is parallel to the Y direction.

[0053] It should also be noted that the sliding shoe 40 is placed on the slide beam 10 , so that the sliding shoe 40 can move along the slide beam 10 under the action of the power system.

[0054] Embodiment 2

[0055] like Figure 1 , Figure 2 As shown, the dragging and sliding structure of the steel truss 20 includes a slide beam 10, a first flat plate 30, a plurality of sliding shoes 40 and a plurality of lubrication components 50; the slide beam 10 is located below the steel truss 20; the first flat plate 30 is arranged on the top of the slide beam 10; a plurality of sliding shoes 40 are movably arranged on the first flat plate 30, and the plurality of sliding shoes 40 are arranged at intervals along the length direction of the slide beam 10, and the sliding shoes 40 are located between the first flat plate 30 and the steel truss 20 and are connected to the steel truss 20; a plurality of lubrication components 50 respectively correspond to the plurality of sliding shoes 40, the lubrication components 50 are arranged on the corresponding sliding shoes 40 and are located in the moving direction of the sliding shoes 40, and the lubrication components 50 are used to apply lubricating oil to the contact surface between the sliding shoes 40 and the first flat plate 30.

[0056] As can be seen from the above, by connecting the sliding shoe 40 with the steel truss 20, the steel truss 20 can move together with the sliding shoe 40, thereby ensuring that the steel truss 20 can slide smoothly, solving the problem that the static friction between the contact surface of the slider and the steel truss 20 of the existing sliding device is insufficient, causing the static friction to be less than the pulling force provided by the power system, resulting in the steel truss 20 being unable to slide smoothly. By setting the first flattening plate 30 to improve the flatness of the slideway beam 10, the dragging friction is reduced, and the "jumping phenomenon" during the dragging process is avoided, and lubricating oil is applied between the sliding shoe 40 and the first flattening plate 30 by the lubrication component 50, the dragging friction is further reduced, and the smooth sliding of the sliding shoe 40 and the steel truss 20 is ensured.

[0057] It should be noted that, during towing, a power system can be set at one end of the slide beam 10, and the power system is connected to the sliding shoe 40 through a steel strand, and the sliding shoe 40 is pulled along the slide beam 10 to slide the steel truss 20 to a specified position, thereby achieving towing of the steel truss 20; the power system includes but is not limited to a cylinder.

[0058] It should also be noted that the cross-section of the slide beam 10 is formed by welding three I-beams, and the slide beam 10 is provided with a plurality of spaced reinforcing ribs 110 in the length direction, and the reinforcing ribs 110 are welded to the web of the I-beam, thereby improving the strength and reliability of the slide beam 10.

[0059] It should also be noted that if Figure 1 , Figure 2 As shown, the length direction is parallel to the X direction, and the width direction is parallel to the Y direction.

[0060] It should also be noted that the sliding shoe 40 is placed on the slide beam 10 , so that the sliding shoe 40 can move along the slide beam 10 under the action of the power system.

[0061] like Figure 4 , Figure 5 As shown, in some embodiments, the lubrication assembly 50 includes a support frame 510, a funnel 520, a flow switch 530 and a roller brush 540; the support frame 510 is detachably disposed at one end of the sliding shoe 40; the funnel 520 is disposed on the support frame 510, an opening is disposed at the bottom of the funnel 520, and the funnel 520 is used to hold lubricating oil; the flow switch 530 is disposed at the opening of the funnel 520; the roller brush 540 is rotatably disposed on the support frame 510, and the roller brush 540 is located below the funnel 520.

[0062] The outflow speed of the lubricating oil is adjusted by the flow switch 530. During the towing operation, the flow switch 530 is turned on, and the lubricating oil flows from the funnel 520 to the surface of the roller brush 540. As the power system pulls the sliding shoe 40 to slide, the roller brush 540 is driven to rotate, so that the roller brush 540 evenly applies the lubricating oil on the first flat plate 30, thereby not only ensuring that the lubricating oil is evenly applied, but also realizing automatic application of the lubricating oil, saving labor costs.

[0063] It should be noted that a boss 430 is provided on the slipper 40, and one end of the support frame 510 is detachably connected to the boss 430 by a latch, which is not only convenient for disassembly and assembly but also can prevent it from falling off; the funnel 520 is connected to the support frame 510 by welding; the roller brush 540 is rotatably mounted on the support frame 510 by a rolling bearing, and the roller brush 540 is abutted against the second flat plate 80, so that when the slipper 40 slides, the roller brush 540 is driven to rotate.

[0064] It should also be noted that the specific structure and working principle of the flow switch 530 are existing technologies and will not be repeated in this application; of course, a valve can also be used to replace the flow switch 530.

[0065] like Figure 2 , Figure 3 As shown, in some embodiments, the sliding shoe 40 includes a load-bearing plate 410 and a plurality of tie rods 420; the load-bearing plate 410 is movably disposed on the first flat plate 30; the plurality of tie rods 420 are respectively disposed at the corners of the load-bearing plate 410, one end of the tie rod 420 is connected to the steel truss 20 and the other end is connected to the load-bearing plate 410.

[0066] The load-bearing plate 410 is provided to provide a structural basis for the load-bearing steel truss 20 , and the tie rod 420 is used to provide a structural basis for the connection between the sliding shoe 40 and the steel truss 20 .

[0067] It should be noted that one end of the pull rod 420 is welded to the load-bearing plate 410, and the other end passes through the load-bearing plate 410 and is connected to the load-bearing plate 410 by bolts; the load-bearing plate 410 can be a steel plate, and a plurality of through holes are provided on the load-bearing plate 410, and the plurality of through holes correspond to a plurality of pull rods 420 one by one, respectively, for the corresponding pull rods 420 to pass through.

[0068] like Figure 2-Figure 4 As shown, in some embodiments, the dragging and sliding structure of the steel truss 20 also includes a plurality of transverse limiting assemblies 60 and a plurality of longitudinal limiting assemblies 70; the plurality of transverse limiting assemblies 60 correspond one-to-one to the plurality of sliding shoes 40, respectively, and the transverse limiting assemblies 60 are arranged on the corresponding sliding shoes 40 to limit the displacement of the sliding shoes 40 in the width direction; the plurality of longitudinal limiting assemblies 70 correspond one-to-one to the plurality of sliding shoes 40, respectively, and the longitudinal limiting assemblies 70 are arranged on the corresponding sliding shoes 40.

[0069] By setting up multiple transverse limit assemblies 60, excessive displacement in the width direction of the sliding shoe 40 during sliding can be avoided, the lateral offset in the dragging process can be reduced, and uneven force on the steel truss 20 can be avoided to cause structural deformation; and the transverse limit assemblies 60 and the longitudinal limit assemblies 70 provide a structural foundation and installation space for the installation of the second leveling plate 80.

[0070] like Figure 2-Figure 4 As shown, in some embodiments, the lateral limiting assembly 60 includes two lateral stops 610 , which are disposed at the bottom of the load-bearing plate 410 and are respectively located on both sides of the slide beam 10 , and the lateral stops 610 extend along the length direction.

[0071] By providing the transverse stoppers 610 respectively located on both sides of the slideway beam 10 , a structural basis is provided for limiting the displacement of the slide shoe 40 in the width direction.

[0072] It should be noted that there is a spacing between the transverse stopper 610 and the slideway beam 10 , for example, the spacing is 20 mm.

[0073] It should also be noted that a plurality of transverse reinforcing plates 620 are disposed on the transverse stopper 610 , and the plurality of transverse reinforcing plates 620 are arranged at intervals along the length direction, so as to improve the strength.

[0074] like Figure 2-Figure 4 As shown, in some embodiments, the longitudinal limiting assembly 70 includes two longitudinal stops 710 , which are spaced apart along the length direction and are respectively located on both sides of the load-bearing plate 410 , and the longitudinal stops 710 extend along the width direction.

[0075] It should be noted that the bottom surface of the longitudinal stopper 710 is located below the bottom surface of the load-bearing plate 410 and above the first flat plate 30, thereby avoiding interference with the first flat plate 30 and limiting the second flat plate 80 to prevent the second flat plate 80 from jumping out.

[0076] It should also be noted that a plurality of longitudinal reinforcing plates are provided on the transverse stopper 610 , and the plurality of longitudinal reinforcing plates are arranged at intervals along the width direction, so as to improve the strength.

[0077] like Figure 3 As shown, in some embodiments, the sliding shoe 40 further includes a second flat plate 80 disposed at the bottom of the steel truss 20 , and the second flat plate 80 is located in a limiting area formed by two transverse stops 610 and two longitudinal stops 710 .

[0078] By arranging a second flat plate 80 at the bottom of the steel truss 20 to abut against the first flat plate 30, the jumping phenomenon caused by the unevenness of the slide beam 10 can be further eliminated, ensuring the smooth sliding of the sliding shoe 40 and the steel truss 20; the second flat plate 80 is limited in the width direction by two transverse blocks 610, and the second flat plate 80 is limited in the length direction by two longitudinal blocks 710, thereby achieving the limitation of the second flat plate 80.

[0079] In some embodiments, the second planar plate 80 is an MGE slide plate.

[0080] It should be noted that the MGE skateboard has good elasticity and impact resistance, and can effectively eliminate various hazards caused by local high pressure caused by unevenness. The MGE skateboard has a large load-bearing capacity and good seismic resistance. It can withstand both large impact loads and impact loads. When subjected to large loads, it has good flexibility and self-recovery. The MGE skateboard is a prior art and will not be described in detail in this application.

[0081] like Figure 2 , Figure 3 As shown, in some embodiments, the steel truss 20 towing and lateral movement structure further includes a plurality of pads, which correspond one-to-one to the plurality of sliding shoes 40 , respectively. The top of the pad is connected to the steel truss 20 and the bottom is connected to the corresponding sliding shoe 40 .

[0082] The steel truss beam 20 is supported by providing a spacer block, and the installation elevation of the steel truss beam 20 can be changed by adjusting the height of the spacer block.

[0083] It should be noted that the cushion block is formed by welding two square tubes arranged side by side in the width direction, and the cushion block is connected to the steel truss 20 and the load-bearing plate 410 respectively by spot welding.

[0084] In some embodiments, the first flat plate 30 is a stainless steel plate.

[0085] By using a stainless steel plate as the first flattening plate 30 , not only the flatness can be improved, but also the friction force can be reduced.

[0086] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A steel truss girder drag and slide structure, characterized in that: include: The slideway beam is located below the steel truss beam; A first leveling plate, disposed on the top of the slideway beam; A plurality of sliding shoes are movably arranged on the first flat plate, the plurality of sliding shoes are arranged at intervals along the length direction of the slideway beam, the sliding shoes are located between the first flat plate and the steel truss beam and connected to the steel truss beam; as well as A plurality of lubrication components correspond to the plurality of sliding shoes respectively, the lubrication components are arranged on the corresponding sliding shoes and are located in the moving direction of the sliding shoes, and the lubrication components are used to apply lubricating oil to the contact surface between the sliding shoes and the first flat plate.

2. The steel truss girder dragging and sliding structure according to claim 1 is characterized in that: The lubrication assembly comprises: A support frame, detachably disposed at one end of the sliding shoe; A funnel is arranged on the support frame, an opening is arranged at the bottom of the funnel, and the funnel is used to hold lubricating oil; a flow switch, disposed at the opening of the funnel; and A roller brush is rotatably arranged on the support frame, and the roller brush is located below the funnel.

3. The steel truss girder dragging and sliding structure according to claim 1, characterized in that: The sliding shoe comprises: a load-bearing plate, movably disposed on the first flat plate; and A plurality of tie rods are respectively arranged at the corners of the load-bearing plate, one end of the tie rod is connected to the steel truss beam and the other end is connected to the load-bearing plate.

4. The steel truss girder dragging and sliding structure according to claim 3 is characterized in that: The steel truss girder dragging and sliding structure also includes: A plurality of transverse limiting components, corresponding to the plurality of sliding shoes respectively, the transverse limiting components are arranged on the corresponding sliding shoes to limit the displacement of the sliding shoes in the width direction; A plurality of longitudinal limit assemblies correspond to the plurality of sliding shoes respectively, and the longitudinal limit assemblies are arranged on the corresponding sliding shoes.

5. The steel truss girder dragging and sliding structure according to claim 4, characterized in that: The transverse limiting assembly includes two transverse blocks, which are arranged at the bottom of the load-bearing plate and are respectively located on both sides of the slideway beam, and the transverse blocks extend along the length direction.

6. The steel truss girder dragging and sliding structure according to claim 5, characterized in that: The longitudinal limit assembly includes two longitudinal stoppers, which are arranged at intervals along the length direction and are respectively located on both sides of the load-bearing plate, and the longitudinal stoppers extend along the width direction.

7. The steel truss girder dragging and sliding structure according to claim 6, characterized in that: The sliding shoe also includes a second flat plate arranged at the bottom of the steel truss, and the second flat plate is located in a limiting area formed by the two transverse stoppers and the two longitudinal stoppers.

8. The steel truss girder dragging and sliding structure according to claim 7, characterized in that: The second flat plate is an MGE slide plate.

9. The steel truss girder dragging and sliding structure according to any one of claims 1 to 8, characterized in that: The steel truss girder dragging and lateral movement structure further comprises a plurality of pads, which correspond one-to-one to the plurality of sliding shoes respectively, wherein the top of the pad is connected to the steel truss girder and the bottom is connected to the corresponding sliding shoe.

10. The steel truss girder dragging and sliding structure according to any one of claims 1 to 8, characterized in that: The first flat plate is a stainless steel plate.

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