A steel truss sliding jacking device

Abstract

The present invention relates to the field of construction technology and discloses a steel truss sliding and jacking equipment. The steel truss sliding and jacking equipment includes a track, a traveling chassis, a traction assembly, and a bearing and fixing unit. A first braking unit is provided on the traveling chassis, and a second braking unit is provided on the bearing and fixing unit. The traction assembly includes a traveling driving unit and a jacking unit. The traveling driving unit is fixed to the jacking unit, one end of the traveling driving unit away from the jacking unit is fixed to the traveling chassis, and one end of the jacking unit away from the traveling driving unit is in transmission connection with the bearing and fixing unit. The steel truss sliding and jacking equipment provided by the present invention can realize the long-distance transportation of the steel truss structure by the mutual cooperation among the first braking unit, the traction assembly, and the second braking unit.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and particularly to a steel truss sliding jacking device. Background Art

[0002] A steel truss refers to a truss made of steel. The roof structures, crane beams, bridges, and hydraulic gates of industrial and civil buildings commonly use steel trusses as the main load-bearing members.

[0003] With the development of the times, more and more large-area and long-span bridges, shopping malls and other buildings are newly built across the country. Such buildings often require natural lighting, so many of them use steel structure grid trusses and glass as the roof, which involves the transportation problem of steel trusses during construction. Currently, many construction sites usually adopt the method of track transportation, laying a foundation on the concrete road surface, erecting tracks, and using sliding transportation equipment to transport and transfer the steel trusses. The existing sliding transportation equipment is powered by electricity and is difficult to push large-sized and heavy steel trusses for long-distance transportation. Moreover, the accuracy is not high, and it is difficult to accurately transport the steel trusses to the designated position. During construction, currently, a hydraulic push rod is mostly used to push the steel truss forward to the preset direction. The length of the transportation distance depends on the length of the push rod. If the transportation distance is greater than the length of the push rod, the transportation equipment cannot send the steel truss to the designated position and manual handling is still required, which increases the working intensity of construction workers. At the same time, during the transportation process, the pulley slides on the track, and the pulley is in direct contact with the track without any protective measures. After a long time, irreversible damage will be caused to the pulley and the track. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel truss sliding jacking device to solve the following technical problems:

[0005] How to achieve long-distance transportation of steel trusses by the sliding jacking device;

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A steel truss sliding and jacking device, comprising a track, a traveling chassis, a traction assembly and a bearing and fixing unit which are slidably arranged on the track. A first braking unit is arranged on the traveling chassis, and a second braking unit is arranged on the bearing and fixing unit. The traction assembly includes a traveling driving unit and a jacking unit which are slidably arranged on the track. The traveling driving unit is fixed to the jacking unit, one end of the traveling driving unit away from the jacking unit is fixed to the traveling chassis, and one end of the jacking unit away from the traveling driving unit is in transmission connection with the bearing and fixing unit. The first braking unit includes a frame fixed to the traveling chassis, an oil cylinder, a lower pressing plate, two columns, two return springs and a fixing clamp rotatably arranged on the frame. A fixing block is arranged at the bottom of the fixing clamp. The lower pressing plate is movably connected to the frame. The oil cylinder is arranged inside the frame. The columns are fixed to the bottom of the frame. The return springs are sleeved outside the columns. The lower parts of the return springs are fixedly connected to the bottom of the frame, and the upper parts of the return springs are fixedly connected to the lower pressing plate away from the bottom of the frame. The lower pressing plate moves downward outside the columns by compressing the return springs.

[0008] Through the above technical solution, before the transportation starts, the second braking unit is in a braking state, and the bearing and fixing unit cannot move. At this time, the oil cylinder is opened. Under the action of pressure, the lower pressing plate slides downward along the column and compresses the return spring. As the lower pressing plate descends, the fixing clamp is subjected to pressure, and the lower part of the fixing clamp opens, so that the fixing blocks fixed on both sides of the track are loosened, and the connection with the track is released. Then, the jacking unit drives the traveling driving unit to slide forward and drags the traveling chassis to slide. When it is necessary to push the bearing and fixing unit forward, the oil cylinder is closed, the lower pressing plate slides upward under the action of the return spring, the fixing clamp tightens, and drives the fixing blocks to clamp on both sides of the track. At this time, the braking state of the second braking unit is released, and the jacking unit pushes the bearing and fixing unit to slide forward. Through the mutual cooperation among the first braking unit, the traction assembly and the second braking unit, the long-distance transportation of the steel truss structure can be realized. In addition, in case of extreme weather, such as strong wind weather, the clamping connection between the fixing clamp and the track can also ensure the stability and safety of the equipment.

[0009] As a further solution of the present invention: The traveling chassis is fixedly connected with a sliding assembly. The sliding assembly includes a positioning frame. An active wheel is fixedly connected to the inner side of the positioning frame. The active wheel slides on the track. Rotating shafts are movably connected to the lower sides of both sides of the positioning frame. Side moving wheels are movably connected below the rotating shafts. The side moving wheels slide on both sides of the track.

[0010] Through the above technical solution, the active wheel can maintain the sliding of the equipment on a straight track, and the side moving wheel can enable the equipment to slide on a curved track through the rotation of the rotating shaft.

[0011] As a further solution of the present invention: a friction-reducing layer is arranged on the outer sides of the driving wheel and the side driving wheel, and the friction-reducing layer is arranged in contact with the driving wheel and the side driving wheel.

[0012] Through the above technical solution, the pulley slides on the track for a long time, and the friction between the surface and the track will cause wear on the pulley and the track. A friction-reducing layer is provided on the outside of the pulley to reduce direct contact between the two and reduce the wear of the pulley and the track.

[0013] As a further solution of the present invention: a limit assembly is fixedly installed on the side of the frame, and the limit assembly includes a downward pressure rod, a reset rod and a limit rod.

[0014] Through the above technical solution, the lower pressure plate moves downward along the column, and the lower pressure rod moves downward accordingly and touches the reset rod. The reset rod is also tilted downward by the downward force. When it tilts to a certain angle, the rear half of the reset rod touches the limit rod to prevent the lower pressure plate from moving further downward.

[0015] As a further solution of the present invention: the bearing and fixing unit includes a bearing chassis slidably arranged on the track, a loading frame is arranged on the top of the bearing chassis, a positioning ring is arranged on the top of the loading frame, a loading column is fixedly connected to one end of the bearing chassis away from the loading frame, and the bottom of the bearing chassis is fixedly connected to the sliding assembly.

[0016] Through the above technical solution, the loading frame can fix smaller steel trusses, and the loading column is used to transport larger steel trusses. In order to ensure the stability of the steel trusses during transportation, positioning rings can be used for fixing. One end of the rope is fixed on the positioning ring, and the other end is fixed on the steel truss.

[0017] As a further solution of the present invention: the second brake unit includes a fixed column, a rotating block, a brake pad, a brake rod, a steering cylinder, a positioning groove and a pressure cylinder, the fixed column is fixed to the side of the supporting chassis away from the track, the rotating block is movably connected to the fixed block, the rotating block is fixedly connected to the brake pad, the brake pad is fixed to the pressure cylinder at one end away from the rotating block, the brake rod passes through the pressure cylinder and is movably connected to the steering cylinder to facilitate the movement of the brake rod, and the positioning groove is provided on the side of the supporting chassis.

[0018] Through the above technical solution, when the load-bearing fixed unit needs to be in a stationary state, the brake lever is moved downward along the notch position of the positioning groove, and the brake lever drives the brake pad to move downward through the downward pressure cylinder. When the brake pad contacts the driving wheel, the driving wheel ends the sliding state through friction, and then the brake lever is fixed in the notch of the positioning groove to keep it stable.

[0019] Beneficial effects of the present invention:

[0020] (1) Before the transportation starts, the second braking unit is in the braking state, and the load-bearing fixing unit cannot move. At this time, the oil cylinder is opened. Under the action of pressure, the lower pressing plate slides downward along the column and compresses the return spring. As the lower pressing plate descends, the fixed clamp is pressured, and the lower part of the fixed clamp opens, causing the fixed blocks fixed on both sides of the track to loosen and release the connection with the track. Then, the jacking unit drives the traveling driving unit to slide forward and drags the traveling chassis to slide. When it is necessary to push the load-bearing fixing unit forward, the oil cylinder is closed. The lower pressing plate slides upward under the action of the return spring, the fixed clamp tightens, and drives the fixed blocks to clamp tightly on both sides of the track. At this time, the braking state of the second braking unit is released, and the jacking unit pushes the load-bearing fixing unit to slide forward. Through the mutual cooperation among the first braking unit, the traction assembly, and the second braking unit, the long-distance transportation of the steel truss structure can be realized. In addition, in case of extreme weather, such as strong wind weather, the clamping connection between the fixed clamp and the track can also ensure the stability and safety of the equipment;

[0021] (2) The driving wheels can maintain the sliding of the equipment on the straight track, and the side moving wheels can enable the equipment to slide on the curved track through the rotation of the rotating shaft;

[0022] (3) When the pulleys slide on the track for a long time, the friction between the surface and the track will cause wear to the pulleys and the track. A friction-reducing layer is arranged on the outer side of the pulleys to reduce the direct contact between the two and lower the wear degree of the pulleys and the track;

[0023] (4) When it is necessary for the load-bearing fixing unit to be in a stationary state, move the brake lever downward along the notch position of the positioning groove. The brake lever drives the brake pads to move downward through the pressing cylinder. When the brake pads contact the driving wheels, the driving wheels end the sliding state through friction, and then fix the brake lever in the notch of the positioning groove to maintain stability. Description of the Drawings

[0024] The present invention will be further described below with reference to the drawings.

[0025] Figure 1 It is a schematic diagram of the simple structure of the sliding jacking equipment in the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the sliding jacking equipment in the present invention;

[0027] Figure 3 It is Figure 2 The enlarged schematic diagram of part 7 in

[0028] Figure 4 It is a schematic diagram of the first braking unit in the present invention;

[0029] Figure 5 It is a schematic diagram of the second braking unit in the present invention;

[0030] Figure 6 Schematic diagram of the load-bearing and fixing unit in the present invention;

[0031] Figure 7 Schematic diagram of the rotating wheel in the present invention.

[0032] Description of the drawings: 1. Rail; 2. Traveling chassis; 3. First braking unit; 31. Frame; 32. Oil cylinder; 33. Lower pressing plate; 34. Column; 35. Return spring; 36. Fixed clamp; 361. Fixed block; 4. Traction assembly; 41. Traveling drive unit; 42. Jacking unit; 5. Load-bearing and fixing unit; 51. Load-bearing chassis; 52. Loading rack; 53. Positioning ring; 54. Loading column; 6. Sliding assembly; 61. Positioning frame; 62. Driving wheel; 63. Rotating shaft; 64. Side moving wheel; 7. Limiting assembly; 71. Lower pressing rod, 72. Return rod, 73. Limiting rod; 8. Second braking unit; 81. Fixed column; 82. Rotating block; 83. Brake pad; 84. Brake rod; 85. Steering cylinder; 86. Positioning groove; 87. Lower pressing cylinder; 9. Anti-friction layer. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] Please refer to Figure 1 、 Figure 2As shown in the figure, the present invention is a steel truss sliding jacking device, which includes a track 1, a traveling chassis 2 slidably arranged on the track 1, a traction assembly 4, and a bearing and fixing unit 5. A first braking unit 3 is arranged on the traveling chassis 2, and a second braking unit 8 is arranged on the bearing and fixing unit 5. The traction assembly 4 includes a traveling driving unit 41 and a jacking unit 42 slidably arranged on the track 1. The traveling driving unit 41 is fixed to the jacking unit 42. One end of the traveling driving unit 41 away from the jacking unit 42 is fixed to the traveling chassis 2. One end of the jacking unit 42 away from the traveling driving unit 41 is in transmission connection with the bearing and fixing unit 5. The first braking unit 3 includes a frame 31 fixed on the traveling chassis 2, an oil cylinder 32, a lower pressing plate 33, two columns 34, two reset springs 35, and a fixed clamp 36 rotatably arranged on the frame 31. A fixed block 361 is arranged at the bottom of the fixed clamp 36. The lower pressing plate 33 is movably connected to the frame 31. The oil cylinder 32 is arranged inside the frame 31. The columns 34 are fixed to the bottom of the frame 31. The reset springs 35 are sleeved outside the columns 34. The lower part of the reset spring 35 is fixedly connected to the bottom of the frame 31, and the upper part of the reset spring 35 is fixedly connected to the lower pressing plate 33 away from the bottom of the frame 31. The lower pressing plate 33 moves downward outside the columns 34 by compressing the reset springs 35.

[0035] The traveling chassis 2 is fixedly connected with a sliding assembly 6. The sliding assembly 6 includes a positioning frame 61. An active wheel 62 is fixedly connected to the inner side of the positioning frame 61. The active wheel 62 slides on the track 1. Rotating shafts 63 are movably connected to the lower sides of both sides of the positioning frame 61. Side moving wheels 64 are movably connected below the rotating shafts 63. The side moving wheels 64 slide on both sides of the track 1.

[0036] A limiting assembly 7 is fixedly installed on the side surface of the frame 31. The limiting assembly 7 includes a lower pressing rod 71, a reset rod 72, and a limiting rod 73.

[0037] The second braking unit 8 includes a fixed column 81, a rotating block 82, a brake pad 83, a brake rod 84, a steering cylinder 85, a positioning groove 86, and a lower pressing cylinder 87. The fixed column 81 is fixed on the side of the bearing chassis 51 away from the track 1. The rotating block 82 is movably connected to the fixed block 361. The rotating block 82 is fixed to the brake pad 83. One end of the brake pad 83 away from the rotating block 82 is fixed to the lower pressing cylinder 87. The brake rod 84 passes through the lower pressing cylinder 87 and is movably connected to the steering cylinder 85 to facilitate the movement of the brake rod 84. The positioning groove 86 is opened on the side surface of the bearing chassis 51.

[0038] Combined Figure 2 and Figure 4As shown in the figure, before the transportation starts, the second braking unit 8 is in the braking state, and the load-bearing fixing unit 5 cannot move. At this time, the oil cylinder 32 is opened. Under the action of pressure, the lower pressing plate 33 slides downward along the column 34, thereby compressing the return spring 35. As the lower pressing plate 33 descends, the fixed clamp 36 is subjected to pressure, and the lower part of the fixed clamp 36 opens, causing the fixing blocks 361 fixed on both sides of the track 1 to loosen, releasing the connection with the track 1. Then, the jacking unit 42 drives the traveling drive unit 41 to slide forward, thereby dragging the traveling chassis 2 to slide. When it is necessary to push the load-bearing fixing unit 5 forward, the oil cylinder 32 is closed, and the lower pressing plate 33 slides upward under the action of the return spring 35, and the fixed clamp 36 tightens, driving the fixing blocks 361 to clamp on both sides of the track 1. At this time, the braking state of the second braking unit 8 is released, and the jacking unit 42 pushes the load-bearing fixing unit 5 to slide forward. Through the mutual cooperation among the first braking unit 3, the traction assembly 4, and the second braking unit 8, the long-distance transportation of the steel truss structure can be realized. In addition, when encountering extreme weather, such as strong wind weather, the clamping connection between the fixed clamp 36 and the track 1 can also ensure the stability and safety of the equipment.

[0039] As Figure 5 shown, when it is necessary for the load-bearing fixing unit 5 to be in a stationary state, move the brake lever 84 downward along the notch position of the positioning groove 86. The brake lever 84 drives the brake pad 83 to move downward through the pressing cylinder 87. When the brake pad 83 contacts the driving wheel 62, the driving wheel 62 ends the sliding state through friction, and then fix the brake lever 84 in the notch of the positioning groove 86 to keep it stable.

[0040] As Figure 6 shown, the loading rack 52 can fix the steel truss with a smaller volume, and the loading column 54 is used to transport the steel truss with a larger volume. In order to ensure the stability of the steel truss during transportation, the positioning ring 53 can be used for fixation. One end of the rope is fixed on the positioning ring 53, and the other end is fixed on the steel truss.

[0041] As Figure 7 shown, the driving wheel 62 can maintain the equipment to slide on the straight track 1, and the side moving wheel 64 can make the equipment slide on the curved track 1 through the rotation of the rotating shaft 63.

[0042] The working principle of the present invention:

[0043] Before the transportation starts, place the steel truss on the load-bearing fixing unit 5 and fix it. At this time, the first braking unit 3 is in the braking state, the traveling chassis 2 cannot move, the second braking unit 8 is in the non-braking state, and the load-bearing fixing unit 5 can move. The jacking unit 42 pushes the load-bearing fixing unit 5 to slide forward. When the jacking length of the jacking unit 42 is not enough to transport the load-bearing fixing unit 5 to the designated position, the second braking unit 8 needs to be adjusted to the braking state, and the first braking unit 3 is adjusted to the movable state. The jacking unit 42 pulls the traveling drive unit 41 to drag the traveling chassis 2 to slide forward. The specific implementation steps are as follows: Move the brake lever 84 downward along the notch position of the positioning groove 86. The brake lever 84 drives the brake pad 83 to move downward through the pressing cylinder 87. When the brake pad 83 contacts the driving wheel 62, the driving wheel 62 ends the sliding state through friction. Then fix the brake lever 84 in the notch of the positioning groove 86 to keep it stable. At this time, the load-bearing fixing unit 5 cannot move. Open the oil cylinder 32. Under the action of pressure, the lower pressing plate 33 slides downward along the column 34 to compress the return spring 35. The descending range of the lower pressing plate 33 is restricted through the cooperation between the limiting components 7. The fixed clamp 36 is under pressure. As the lower pressing plate 33 descends, the lower part of the fixed clamp 36 opens, so that the fixing blocks 361 fixed on both sides of the track 1 are loosened, and the connection with the track 1 is released. At this time, the traveling chassis 2 is in a movable state. Through the mutual cooperation between the first braking unit 3, the traction assembly 4 and the second braking unit 8, the long-distance transportation of the steel truss structure can be realized. In addition, in case of extreme weather, such as strong wind weather, the clamping connection between the fixed clamp 36 and the track 1 can also ensure the stability and safety of the equipment.

[0044] One embodiment of the present invention has been described in detail above, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A steel truss sliding jacking device, characterized in that, it includes a track (1), a traveling chassis (2), a traction assembly (4) and a bearing and fixing unit (5) that are slidably arranged on the track (1). A first braking unit (3) is arranged on the traveling chassis (2), and a second braking unit (8) is arranged on the bearing and fixing unit (5); The traction assembly (4) includes a traveling drive unit (41) and a jacking unit (42) that are slidably arranged on the track (1). The traveling drive unit (41) is fixed to the jacking unit (42). One end of the traveling drive unit (41) away from the jacking unit (42) is fixed to the traveling chassis (2), and one end of the jacking unit (42) away from the traveling drive unit (41) is in transmission connection with the bearing and fixing unit (5); The first braking unit (3) includes a frame (31), an oil cylinder (32), a lower pressing plate (33), two columns (34), two return springs (35) fixed to the traveling chassis (2), and a fixed clamp (36) rotatably arranged on the frame (31). A fixed block (361) is arranged at the bottom of the fixed clamp (36). The lower pressing plate (33) is movably connected to the frame (31). The oil cylinder (32) is arranged inside the frame (31). The columns (34) are fixed to the bottom of the frame (31). The return springs (35) are sleeved outside the columns (34). The lower part of the return springs (35) is fixedly connected to the bottom of the frame (31), and the upper part of the return springs (35) is fixedly connected to the lower pressing plate (33) away from the bottom of the frame (31). The lower pressing plate (33) moves downward outside the columns (34) by compressing the return springs (35); The bearing and fixing unit (5) includes a bearing chassis (51) slidably arranged on the track (1). The second braking unit (8) includes a fixed column (81), a rotating block (82), a brake pad (83), a brake rod (84), a steering cylinder (85), a positioning groove (86) and a lower pressing cylinder (87). The fixed column (81) is fixed on the side of the bearing chassis (51) away from the track (1). The rotating block (82) is movably connected to the fixed block (361). The rotating block (82) is fixedly connected to the brake pad (83). One end of the brake pad (83) away from the rotating block (82) is fixed to the lower pressing cylinder (87). The brake rod (84) passes through the lower pressing cylinder (87) and is movably connected to the steering cylinder (85) to facilitate the movement of the brake rod (84). The positioning groove (86) is opened on the side of the bearing chassis (51).

2. The steel truss sliding jacking device according to claim 1, characterized in that, The traveling chassis (2) is fixedly connected with a sliding assembly (6). The sliding assembly (6) includes a positioning frame (61). Inside the positioning frame (61), a driving wheel (62) is fixedly connected. The driving wheel (62) slides on the track (1). Below both sides of the positioning frame (61), a rotating shaft (63) is movably connected. Below the rotating shaft (63), a side moving wheel (64) is movably connected. The side moving wheel (64) slides on both sides of the track (1).

3. The steel truss sliding jacking device according to claim 2, characterized in that, anti-friction layers (9) are arranged on the outer sides of the driving wheel (62) and the side moving wheel (64). The anti-friction layers (9) are arranged in a fitting manner with the driving wheel (62) and the side moving wheel (64).

4. The steel truss sliding jacking device according to claim 1, characterized in that, a limiting assembly (7) is fixedly installed on the side surface of the frame (31). The limiting assembly (7) includes a pressing rod (71), a reset rod (72) and a limiting rod (73).

5. The steel truss sliding jacking device according to claim 2, characterized in that, the load-bearing fixing unit (5) includes a load-bearing chassis (51) slidably arranged on the track (1). On the top of the load-bearing chassis (51), a loading rack (52) is arranged. On the top of the loading rack (52), a positioning ring (53) is arranged. One end of the load-bearing chassis (51) away from the loading rack (52) is fixedly connected with a loading column (54). The bottom of the load-bearing chassis (51) is fixedly connected with the sliding assembly (6).

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