Steel-concrete composite beam prefabricated bridge deck slab lifting appliance

Abstract

The utility model relates to a steel-concrete composite beam prefabricated bridge deck slab lifting appliance which comprises a cross beam, pull rods and a clamp, steel wire ropes are arranged at the outer end of the top of the cross beam respectively, the bottom of the cross beam is hinged to one ends of the pull rods, the other end of each pull rod is hinged to the clamp, and the clamp is of an obtuse angle structure. And the working end of the clamp is propped against the outer side step of the bridge deck slab during working. By the adoption of the lifting appliance, in the factory production and on-site installation process of prefabricated bridge decks, the bridge decks can be rapidly lifted, the lifting process is stable, the construction period is shortened on the basis that the structural strength of the bridge decks is guaranteed, and the prefabrication time and cost of the bridge decks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel-concrete composite beam prefabricated bridge deck hoist. Background Art

[0002] The concrete precast bridge deck of the steel-concrete composite beam needs to be lifted by a crane during the transportation and installation process after prefabrication. In the existing construction method, the top surface of the precast bridge deck is usually preset with four lifting rings arranged at the four vertices of a rectangle, which are embedded in the bridge deck. During the lifting process, a special lifting device is usually used, and four lifting ears are provided at the bottom of the lifting device, which are respectively connected to the lifting rings on the bridge deck. However, the embedded lifting rings, although convenient for lifting, have an impact on the pouring, vibration and demoulding of the precast concrete components, which greatly increases the prefabrication time and cost. Utility Model Content

[0003] The utility model aims to provide a steel-concrete composite beam prefabricated bridge deck hanger to solve the problems encountered in the above-mentioned background technology.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A steel-concrete composite beam prefabricated bridge deck hoist, comprising a crossbeam, a tie rod and a clamp, wherein the top outer ends of the crossbeam are respectively provided with steel wire ropes, the bottom of the crossbeam is hinged to one end of a plurality of the tie rods, and the other end of each of the tie rods is hinged to the clamp, the clamp is an obtuse-angle structure, and the working end of the clamp rests on the outer step of the bridge deck during operation.

[0006] In the above scheme, a positioning rod is installed in the clamp, and the positioning rod is rotatably connected to the plate body of the clamp through a rotating shaft. A spring hook is provided at the bottom of the crossbeam, and a hook matching the spring hook is provided at the top of the positioning rod.

[0007] In the above scheme, the clamp includes an obtuse-angle plate, which is an obtuse-angle structure. A rotating shaft hole rotatably connected to the positioning rod is provided at the angle of the obtuse-angle plate. A hinge hole hinged to one end of the pull rod is provided at one end of the obtuse-angle plate. The other end of the obtuse-angle plate is provided with a supporting block that abuts against the outer step of the bridge deck.

[0008] As a preferred solution, a weight-reducing groove is provided on the body of the obtuse-angled plate, the abutment block is fixed to the obtuse-angled plate via a fixing seat, the abutment block is a cylindrical structure, and its axis is perpendicular to the body direction of the obtuse-angled plate.

[0009] In the above scheme, the pull rod includes a pull plate, two of which are provided with pull rings at both ends, and the two pull plates are fixedly connected by a partition.

[0010] In the above scheme, a hanger is installed on the top of the crossbeam, and a fixing plate connected to the wire rope is installed on the top outer end of the hanger. The fixing plate is a triangular strip structure, and threading holes are evenly opened on the fixing plate.

[0011] In addition, in one of the embodiments of the above scheme, a sleeve is provided at the bottom of the beam, and the sleeve is matched with the top mounting hole of the bridge deck through a screw.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the use of this lifting device instead of the traditional lifting ear design can reduce the embedded parts, which can reduce the production difficulty of bridge panel prefabrication and improve production efficiency. It is convenient for assembly and disassembly during lifting operations. During the production of prefabricated bridge panels in the factory and the on-site installation, the bridge panels can be lifted quickly and the lifting process is smooth. On the basis of ensuring the structural strength of the bridge panels, the construction period is reduced, and the prefabrication time and cost of the bridge panels are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 This is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the pull rod in the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the clamp in the utility model.

[0018] Numbers in the figure: 1-crossbeam; 11-sleeve; 12-hanger; 13-fixed plate; 14-spring hook; 2-pull rod; 21-pull plate; 22-pull ring; 23-partition; 3-clamp; 31-obtuse plate; 32-rotating shaft hole; 33-hinge hole; 34-fixed seat; 35-rest block; 36-weight reduction groove; 4-positioning rod; 41-hook; 5-wire rope. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the relevant components of the utility model.

[0020] According to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0021] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1, as Figure 1 and Figure 2 As shown, a steel-concrete composite beam prefabricated bridge deck hoist comprises a crossbeam 1, a tie rod 2 and a clamp 3. Steel wire ropes 5 are respectively arranged at the top outer ends of the crossbeam 1 for cooperating with a crane to hoist the hoist.

[0023] The bottom of the crossbeam 1 is hinged to one end of a plurality of tie rods 2, and the other end of each tie rod 2 is hinged to a clamp 3. That is to say, during implementation, a plurality of tie rods 2 and clamps 3 are used, and these parts connected by hoisting are hung on both sides of the hoist. Among them, the clamp 3 is an obtuse angle structure, which is convenient for forming a hooking effect on the bridge deck during lifting.

[0024] During implementation, the working end of the clamp 3 abuts against the outer step of the bridge deck during operation. The step exists when the bridge deck is prefabricated, and the bridge deck will be assembled according to the step when it is matched with the steel beam. Therefore, the hoist does not need to embed a lifting ring in the bridge deck during hoisting, so as not to adversely affect the process of prefabricating the bridge deck. The clamp 3 is the key force-bearing structure of the hoist. The conversion between the deadweight of the hoisting component and the clamping force of the clamp 3 is realized through such a structural device, ensuring the reliability and safety of the hoisting operation.

[0025] The use of this lifting device replaces the traditional lifting lug design scheme, reduces the embedded parts, reduces the difficulty of bridge deck prefabrication and improves production efficiency, facilitates assembly and disassembly during lifting operations, and can achieve rapid lifting and smooth lifting of bridge decks during the production of prefabricated bridge decks in the factory and on-site installation. On the basis of ensuring the structural strength of the bridge deck, the construction period is reduced, and the prefabrication time and cost of the bridge deck are reduced. This lifting device makes full use of the deadweight and compressive strength of concrete prefabricated components and is a structural innovation.

[0026] Embodiment 2, based on the solution of embodiment 1, a positioning rod 4 is installed in the clamp 3, two clamps 3 are installed at both ends of one positioning rod 4, the positioning rod 4 is rotatably connected with the plate body of the clamp 3 through a rotating shaft, and the working end of the clamp 3 can be fixed against the outer step of the bridge deck by rotation during lifting, and the torque of the left and right clamps 3 is pulled to bring the bridge deck closer to the middle through the pulling of the wire rope 5, and plays a clamping role. As a preferred solution, a spring hook 14 is provided at the bottom of the beam 1, and a hook 41 that cooperates with the spring hook 14 is provided at the top of the positioning rod 4. When the prefabricated bridge deck is lifted by this lifting device, the whole lifting work is more stable through the cooperation of the spring hook 14 and the hook 41.

[0027] In addition, in one of the embodiments, a sleeve 11 is provided at the bottom of the cross beam 1, and the sleeve 11 cooperates with the top mounting hole of the bridge deck through a screw rod. Such a design can also increase the stability of the entire lifting process.

[0028] Example 3, based on the scheme of Example 1 or 2, please refer to Figure 4 The specific structure of the clamp 3 includes an obtuse angle plate 31, which is an obtuse angle structure. The obtuse angle plate 31 is provided with a rotating shaft hole 32 at the angle thereof, which is rotatably connected to the positioning rod 4, so as to facilitate the rotation after cooperating with the rotating shaft. One end of the obtuse angle plate 31 is provided with a hinge hole 33 hinged to one end of the pull rod 2, and the other end of the obtuse angle plate 31 is provided with a supporting block 35 which abuts against the outer step of the bridge deck.

[0029] As a preferred solution, a weight-reducing groove 36 is provided on the body of the obtuse-angled plate 31 to reduce the manufacturing cost and the weight of the component, and the abutment block 35 is fixed to the obtuse-angled plate 31 through a fixing seat 34. During implementation, the abutment block 35 is designed as a cylindrical structure, and its axis is staggered and perpendicular to the body direction of the obtuse-angled plate 31. During the lifting process of the clamp 3, the obtuse-angled plate 31 is vertical, and the abutment block 35 is horizontal, which is convenient for abutment with the prefabricated bridge deck.

[0030] Example 4, based on the scheme of Examples 1 to 3, please refer to Figure 3 The specific structure of the pull rod 2 includes a pull plate 21. There are two pull plates 21, and pull rings 22 are provided at both ends. The two pull plates 21 are fixedly connected by a partition 23. The two pull plates 21 are used to pull the clamp 3 and the beam 1, which has the effect of improving the pulling stability. The empty space at both ends of the partition 23 serves to facilitate the hinged fixation.

[0031] In one of the embodiments, during the specific implementation, a hanger 12 is fixedly installed on the top of the crossbeam 1 by screws, and a fixing plate 13 connected to the steel wire rope 5 is installed on the top outer end of the hanger 12, thereby improving the overall hoisting stability of the prefabricated bridge deck. As a preferred solution, the fixing plate 13 is a triangular strip structure, and threading holes are evenly opened on the fixing plate 13, through which the installation position of the steel wire rope 5 can be adjusted, thereby adjusting the hanger, which has strong versatility and is suitable for prefabricated bridge decks of different lengths.

[0032] To summarize, during implementation, a crane is used to lift the hoist to the designated position of the bridge deck to be lifted. The crane drops the hook to release the clamp and unfold it and drop it to the reserved lifting point step on the side of the bridge deck. After slowly lifting the clamp 3 to tighten and gradually approach the reserved lifting point, a connecting sleeve 11 or a spring hook 14 is used to mechanically connect the bridge deck steel bar as a safeguard. After evacuating nearby personnel, the crane continues to lift slowly, and observe at any time whether the bridge deck hoist and the bridge deck posture change during the lifting process. After confirming that there is no problem, the lifting operation is moved to the designated location and slowly lowered. After the bridge deck is stably lowered and the connecting sleeve 11 is unscrewed, the crane continues to drop the hook to allow the hanger to fall onto the positioning rod 4 under its own weight to cause the clamp 3 to leave the lifting point, and the bridge deck lifting operation is completed.

[0033] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A steel-concrete composite beam prefabricated bridge deck hanger, characterized in that: It comprises a crossbeam (1), a tie rod (2) and a clamp (3), wherein the top outer ends of the crossbeam (1) are respectively provided with steel wire ropes (5), the bottom of the crossbeam (1) is hinged to one end of a plurality of tie rods (2), the other end of each tie rod (2) is hinged to the clamp (3), the clamp (3) is an obtuse-angle structure, and the working end of the clamp (3) abuts against the outer step of the bridge deck during operation.

2. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 1, characterized in that: A positioning rod (4) is installed in the clamp (3), and the positioning rod (4) is rotatably connected to the plate body of the clamp (3) via a rotating shaft.

3. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 2, characterized in that: A spring hook (14) is provided at the bottom of the crossbeam (1), and a hook (41) matching with the spring hook (14) is provided at the top of the positioning rod (4).

4. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 2, characterized in that: The clamp (3) comprises an obtuse-angle plate (31), which is an obtuse-angle structure. A rotating shaft hole (32) rotatably connected to a positioning rod (4) is provided at an angle of the obtuse-angle plate (31). A hinge hole (33) hinged to one end of a pull rod (2) is provided at one end of the obtuse-angle plate (31). A supporting block (35) abutting against an outer step of a bridge deck is provided at the other end of the obtuse-angle plate (31).

5. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 4, characterized in that: The plate body of the obtuse angle plate (31) is provided with a weight-reducing groove (36), the abutment block (35) is fixed to the obtuse angle plate (31) via a fixing seat (34), the abutment block (35) is a cylindrical structure, and its axis is staggered and perpendicular to the plate body direction of the obtuse angle plate (31).

6. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 1, characterized in that: The pull rod (2) comprises a pull plate (21), two pull plates (21) are provided, and pull rings (22) are provided at both ends of the pull plates, and the two pull plates (21) are fixedly connected via a partition plate (23).

7. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 1, characterized in that: A hanger (12) is installed on the top of the crossbeam (1), and a fixing plate (13) connected to the steel wire rope (5) is installed on the top outer end of the hanger (12).

8. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 7, characterized in that: The fixing plate (13) is a triangular strip structure, and threading holes are evenly formed on the fixing plate (13).

9. The steel-concrete composite beam prefabricated bridge deck hanger according to claim 1, characterized in that: A sleeve (11) is provided at the bottom of the crossbeam (1), and the sleeve (11) is matched with a top mounting hole of the bridge deck through a screw rod.

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