Bridge floor wet joint formwork hoisting device
By designing a bridge deck wet seam template lifting device that includes anti-fall rope, ratchet and jaws, the problem of the formwork falling caused by the break of the wire rope in the traditional lifting device is solved, and higher safety and use effect are achieved.
Patent Information
- Application Number
- CN202422099867.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The wire ropes of the traditional wet seam formwork hoisting device are prone to break after long-term use, causing the formwork to fall and endanger the safety of workers or items.
A bridge deck wet seam formwork hoisting device is designed, including a mobile bracket, a bracket, a pulley set, a hoist and a fall-proof column. Through the combination of anti-fall rope, ratchet and jaws, it ensures that the pulley set and formwork will not fall even if the wire rope breaks.
It effectively prevents the formwork from falling after the rope breaks, ensures safety at the construction site and improves the use effect.
Smart Images
Figure CN222974716U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge erection, and particularly relates to a hoisting device for the wet joint formwork of a bridge deck. Background Art
[0002] During bridge construction, precast prestressed concrete beams are usually assembled into long-span continuous beams by a bridge erecting machine or a crane, and then concrete is cast in situ between the beams to connect the beams into a whole. The joint between the beams is the wet joint of the bridge.
[0003] At present, during traditional wet joint construction, a hoisting device is usually set above the wet joint to hoist the formwork on the ground. A winch is usually used in the hoisting device. After long-term use, the hoisting rope of the winch will be worn and fatigued due to long-term stress use, resulting in a decrease in the bearing capacity of the steel wire rope, which is likely to cause the steel wire rope to break and the formwork to fall, causing harm to the workers or objects below.
[0004] Therefore, an improved technical solution is needed to address the above deficiencies in the prior art. Summary of the Utility Model
[0005] The purpose of the utility model is to overcome the problem that the hoisting device for the wet joint formwork in the prior art is likely to cause the steel wire rope to break and the formwork to fall, causing harm to the pedestrians or objects below during long-term use, and to provide a hoisting device for the wet joint formwork of a bridge deck.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A lifting device for the wet joint formwork of a bridge deck, comprising: a moving support, a bearing bracket, a pulley block, a winch and an anti-falling column. The moving support is placed above the wet joint of the bridge deck and is displaced along the length direction of the wet joint of the bridge deck. The bearing bracket is arranged above the moving support. The bearing bracket includes: a top support frame and side support frames. The top support frame is horizontally arranged at the top of a pair of the side support frames. The side support frames are located between the top support frame and the moving support, and the two side support frames respectively support the two ends of the top support frame to enable the top support frame to span across the wet joint of the bridge deck. The pulley block is correspondingly arranged below the middle of the top support frame for the wet joint of the bridge deck. The pulley block includes: a movable pulley, a hook seat and a hook. The movable pulley is rotatably sleeved on a positioning shaft horizontally inserted in the middle of the hook seat, and the positioning shaft protrudes outward. The hook is arranged at the bottom of the hook seat. The winch is placed on the top of the top support frame. The head end of the steel wire rope on the winch passes through between the movable pulley and the hook and is fixed to the top support frame. The anti-falling column is horizontally arranged between the two side support frames, and the anti-falling column rotates synchronously with the machine shaft of the winch. The anti-falling column is located above the pulley block. An anti-falling rope corresponding to the protruding part of the positioning shaft is wound around the outside of the anti-falling column, so that the head end of the anti-falling rope is wound around the protruding part of the positioning shaft. A ratchet is sleeved outside the anti-falling column, and a pawl is arranged on the side of the ratchet.
[0008] In the lifting device for the wet joint formwork of the bridge deck as described above, preferably, the moving support is composed of a pair of single frames arranged side by side at intervals.
[0009] The two side support frames are respectively arranged on the tops of the two single frames.
[0010] Preferably, the single frame includes: a vertical column, a cross beam and a support rod. A caster is rotatably arranged at the lower end of the vertical column. One end of the cross beam is butted against the middle of the vertical column.
[0011] The support rod is vertically arranged below the other end of the cross beam, and the lower end of the support rod is flush with the bottom of the caster.
[0012] Preferably, a reinforcing rib is arranged between the support rod and the vertical column.
[0013] Preferably, the entire gravity of the pulley block acts on the steel wire rope of the winch.
[0014] Preferably, the whole of the bearing bracket is welded by steel bars or steel pipes.
[0015] Preferably, the machine shaft of the winch extends outward to be sleeved with a driving wheel, and a driven wheel is correspondingly sleeved outside the anti-falling column for the driving wheel.
[0016] The driving wheel and the driven wheel are driven by a belt.
[0017] Preferably, a clamping column is rotatably arranged between the two side support frames, and the clamping column is parallel to the anti-falling column;
[0018] The clamping jaw is fixed to the clamping column corresponding to the ratchet wheel.
[0019] Preferably, the distance between the clamping column and the ratchet wheel is less than the length of the clamping jaw.
[0020] Beneficial effects: The utility model can ensure that the pulley block and the wet joint template will not fall after the suspension rope breaks, thereby ensuring that the workers or articles below the wet joint are not damaged, with high safety and excellent use effects. Description of the Drawings
[0021] The specification drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. Among them:
[0022] Figure 1 is the front view schematic diagram of the utility model;
[0023] Figure 2 is the overall structure schematic diagram of the utility model;
[0024] Figure 3 is the matching schematic diagram of the anti-falling column and the clamping column structures of the utility model;
[0025] Figure 4 is Figure 3 the enlarged view at A in
[0026] In the figure: 1, top support frame; 2, side support frame; 3, moving pulley; 4, hook seat; 5, hook; 6, positioning shaft; 7, winch; 8, anti-falling column; 9, anti-falling rope; 10, ratchet wheel; 11, clamping jaw; 12, column; 13, cross beam; 14, support rod; 15, caster wheel; 16, reinforcing rib; 17, driving wheel; 18, driven wheel; 19, clamping column. Detailed Embodiments
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the utility model.
[0028] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and does not require the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0029] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.
[0030] Embodiment. This embodiment aims to provide a hoisting device for the wet joint formwork of a bridge deck. Its main function is reflected in that it can cope with the sudden situation of the accidental fracture of the lifting rope and ensure that the pulley block and the wet joint formwork in the hoisting state will not suddenly fall and cause harm to the workers or items below.
[0031] Refer to Figure 1 and Figure 2 , including: a mobile support, a bearing bracket, a pulley block, a winch 7 and an anti-falling column 8. The mobile support is composed of a pair of single frames arranged side by side and spaced apart along the width direction of the wet joint of the bridge deck, and both single frames are displaced along the length direction of the wet joint of the bridge deck. The single frame includes: a vertical column 12, a cross beam 13 and a support rod 14. The lower end of the vertical column 12 is rotatably installed with a caster 15. The right end of the cross beam 13 is welded to the middle of the vertical column 12. The left end of the cross beam 13 extends downward for a worker to hold. The support rod 14 is vertically welded below the left end of the cross beam 13, and the lower end of the support rod 14 is flush with the bottom of the caster 15. While supporting the cross beam 13 through the support rod 14, the cross beam 13 is also kept horizontal; an X-shaped reinforcing rib 16 is provided between the support rod 14 and the vertical column 12 to improve the bearing capacity of the cross beam 13.
[0032] Refer to Figure 2 , the bearing bracket is arranged above the mobile support. The whole of the bearing bracket is welded by steel bars or steel pipes. The bearing bracket includes: a top support frame 1 and a pair of side support frames 2. The top support frame 1 is composed of a rectangular frame and multiple support rods. Multiple spaced support rods are welded in the rectangular frame along the width direction. The side support frame 2 is in an H shape. The two side support frames 2 are respectively welded to the tops of the two single frames, and the top support frame 1 is horizontally welded to the tops of the two side support frames 2. The two side support frames 2 respectively support the two ends of the top support frame 1 to make the top support frame 1 span the wet joint of the bridge deck.
[0033] Referring to Figure 2 、 Figure 3 and Figure 4 , the pulley block is correspondingly arranged below the middle part of the top support frame 1 for the wet joint of the bridge deck. The pulley block includes: a movable pulley 3, a hook seat 4 and a hook 5. The movable pulley 3 is rotatably sleeved on a positioning shaft 6 horizontally inserted in the middle of the hook seat 4, and the positioning shaft 6 protrudes outward. The hook 5 is installed at the bottom of the hook seat 4; the winch 7 is fixed to the top of the top support frame 1. The head end of the steel wire rope on the winch 7 passes between the movable pulley 3 and the hook 5 and then is fixed to the top support frame 1, so that the gravity of the pulley block acts entirely on the steel wire rope of the winch 7. Among them, the shaft of the winch 7 extends outward to fixedly sleeve the driving wheel 17; the anti-falling column 8 is horizontally arranged between the two side support frames 2. A driven wheel 18 corresponding to the driving wheel 17 is fixedly sleeved outside the anti-falling column 8. The driving wheel 17 and the driven wheel 18 are driven by a belt, so that the anti-falling column 8 rotates synchronously with the shaft of the winch 7. The anti-falling column 8 is located above the pulley block. An anti-falling rope 9 corresponding to the protruding part of the positioning shaft 6 is wound outside the anti-falling column 8, so that the head end of the anti-falling rope 9 is wound on the protruding part of the positioning shaft 6. The position of the anti-falling column 8 is biased to the right so that the anti-falling rope 9 extends in the vertical direction; four ratchets 10 are spaced apart and centered on the outside of the anti-falling column 8. Except for the two adjacent ratchets 10 in the middle, the anti-falling rope 9 is wound between the other adjacent ratchets 10. A pawl 11 is provided on the side of each ratchet 10. Specifically, a clamping column 19 is rotatably installed between the two side support frames 2. The clamping column 19 is parallel to the anti-falling column 8 and is arranged adjacent to the left side of the anti-falling column 8. Therefore, the clamping column 19 is also located above the pulley block. The tails of the four pawls 11 are fixedly sleeved on the outside of the clamping column 19, and the heads of the four pawls 11 can rotate with the rotation of the clamping column 19. Based on this, the position of the head of the pawl 11 can be correspondingly adjusted according to the working state of the pulley block.
[0034] In this embodiment, the distance between the clamping column 19 and the ratchet 10 is less than the length of the pawl 11 to play a braking role on the ratchet 10.
[0035] During actual use, move this device above the wet joint of the bridge deck, so that the top support frame 1 straddles the wet joint, and make the pulley block correspond to the middle of the wet joint. Before starting the winch 7 to lower the pulley block, rotate the clamping column 19 counterclockwise to fiddle with the position of the head of the claw 11, so that the head of the claw 11 is disengaged from the ratchet wheel 10 to prevent restricting the counterclockwise rotation of the ratchet wheel 10. The axle of the winch 7 rotates counterclockwise when lowering the pulley block; when the pulley block hoists the wet joint formwork upward, rotate the clamping column 19 clockwise to fiddle with the position of the head of the claw 11, so that the head of the claw 11 contacts the teeth of the ratchet wheel 10. The axle of the winch 7 rotates clockwise when the pulley block rises. Based on this, whether during the hoisting of the wet joint formwork or during the filling construction when the wet joint formwork reaches the designated position, the head of the claw 11 will play a role in restricting the counterclockwise rotation of the ratchet wheel 10. Even if the steel wire rope of the winch 7 breaks accidentally during the above process, the pulley block and the wet joint formwork can be prevented from falling suddenly through the anti-falling rope 9, the ratchet wheel 10 and the claw 11, ensuring that the workers or items below are not harmed.
[0036] The hoisting device provided in this embodiment can ensure that the pulley block and the wet joint formwork will not fall after the suspension rope breaks, thereby ensuring that the workers or items below the wet joint are not harmed, with high safety and excellent use effect.
[0037] It can be understood that the above description is only exemplary, and the embodiments of the present application do not limit this.
[0038] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.
Claims
1. A bridge deck wet joint formwork hoisting device, characterized in that: include: The mobile bracket is placed above the wet joint of the bridge deck and is displaced along the length direction of the wet joint of the bridge deck; A support frame is arranged above the movable bracket, and the support frame comprises: a top support frame and a side support frame, wherein the top support frame is arranged horizontally on the top of a pair of side support frames, and the side support frame is located between the top support frame and the movable bracket, and the two ends of the top support frame are supported respectively by the two side support frames, so that the top support frame spans the wet joint of the bridge deck; A pulley block is arranged at the lower middle part of the top support frame corresponding to the wet joint of the bridge deck, and the pulley block comprises: a movable pulley, a hook seat and a hook, the movable pulley is rotatably sleeved on a positioning shaft horizontally inserted in the middle part of the hook seat, and the positioning shaft is convexly arranged, and the hook is arranged at the bottom of the hook seat; A winch is placed on the top of the top support frame, and the head end of the wire rope on the winch passes between the movable pulley and the hook and is fixed to the top support frame; An anti-fall column is horizontally arranged between the two side support frames, and the anti-fall column rotates synchronously with the shaft of the winch. The anti-fall column is located above the pulley block. An anti-fall rope corresponding to the protruding part of the positioning shaft is wound around the outside of the anti-fall column, so that the head end of the anti-fall rope is wound around the protruding part of the positioning shaft. A ratchet is mounted on the outside of the anti-fall column, and a claw is provided on the side of the ratchet.
2. The bridge deck wet joint formwork hoisting device according to claim 1 is characterized in that: The mobile support is composed of a pair of single frames arranged side by side and at intervals; The two side support frames are respectively arranged on the top of the two single frames.
3. The bridge deck wet joint formwork hoisting device according to claim 2 is characterized in that: The single frame comprises: a column, a crossbeam and a support rod, the lower end of the column is rotatably provided with a caster, and one end of the crossbeam is butted against the middle of the column; The support rod is vertically arranged below the other end of the cross beam, and the lower end of the support rod is flush with the bottom of the caster.
4. The bridge deck wet joint formwork hoisting device according to claim 3 is characterized in that: Reinforcing ribs are arranged between the support rod and the column.
5. The bridge deck wet joint formwork hoisting device according to claim 1, characterized in that: The gravity of the pulley block all acts on the steel wire rope of the winch.
6. The bridge deck wet joint formwork hoisting device according to claim 1, characterized in that: The entire support frame is welded from steel bars or steel pipes.
7. The bridge deck wet joint formwork hoisting device according to claim 1, characterized in that: The shaft of the winch extends outward to be fitted with a driving wheel, and a driven wheel is fitted on the outside of the anti-fall column corresponding to the driving wheel; The driving wheel and the driven wheel are driven by a belt.
8. The bridge deck wet joint formwork hoisting device according to claim 1, characterized in that: A clamping column is rotatably provided between the two side support frames, and the clamping column is parallel to the anti-fall column; The clamping claw is fixed on the clamping column corresponding to the ratchet.
9. The bridge deck wet joint formwork hoisting device according to claim 8, characterized in that: The distance between the clamping column and the ratchet is smaller than the length of the clamping claw.