Lifting appliance for lifting stadium prefabricated concrete stand step

Abstract

The utility model discloses a lifting appliance for lifting a precast concrete stand step in a stadium, which comprises L-shaped lifting hooks detachably arranged on two sides of one end of the stand step, and a plate type lifting hook arranged at the other end of the stand step, the plate type lifting hook comprises a main supporting plate, a lifting plate hinged to one end of the main supporting plate, a lifting sleeve fixedly installed at the other end of the main supporting plate and a lifting lug fixedly installed on the main supporting plate, and the L-shaped lifting hook is hinged to one end of the lifting sleeve through a connecting piece; and a plurality of limiting pieces are arranged on the connecting piece. According to the lifting appliance, a three-point lifting mode is adopted, stand steps can be stably and reliably lifted, the situation that corners are collided during lowering is effectively avoided, the integrity of the stand steps is improved, the overall attractiveness after splicing is guaranteed, and the application prospect is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting precast concrete parts, in particular to a hoisting device for hoisting precast concrete stands and steps in sports stadiums. Background Art

[0002] With the rapid development of the construction industry, precast concrete parts are widely used due to their advantages of short construction period, low manufacturing cost, safety and reliability, and low environmental pollution. At present, the hoisting method of concrete stand steps mainly adopts the two-point method, that is, the hoisting rings are reserved at both ends of the steps, and then the hoisting rings are lifted by lifting equipment and installed step by step from top to bottom. Each step needs to have two hoisting rings, which need to be removed after installation, resulting in a waste of resources. The removal requires a lot of time and energy, increasing the construction cost, and the steps are easy to damage the corners when falling into place, and cannot be stably placed. The utility model patent with authorization announcement number CN208218210U discloses a prefabricated step lifting tool, including two cross-arranged lifting rods and two fixed wheels sleeved on the bottom of the lifting rods, the lifting rods are connected by a transfer bearing arranged below the cross position of the lifting rods, the hook bend is threadedly connected with a first nut, and the first nut and the end of the hook bend are sleeved with fixed wheels. The prefabricated step lifting tool is suitable for the lifting of prefabricated steps in large venues, with a simple structure, low production cost, and convenient construction. It does not require reserved lifting rings at both ends of the step, reducing waste of resources, but the tool still adopts a two-point lifting method, and the lifting stability is poor. Utility Model Content

[0003] The utility model aims to provide a hoist for hoisting precast concrete stand steps in sports stadiums. The hoist adopts a three-point hoisting method, which can hoist the stand steps stably and reliably, effectively avoiding the corners from being bumped when lowering, improving the integrity of the stand steps, ensuring the overall aesthetics after splicing, and having broad application prospects.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A hoisting device for hoisting precast concrete stand steps in a sports stadium comprises L-shaped hooks detachably arranged on both sides of one end of the stand step, a plate-type hook is arranged on the other end of the stand step, the plate-type hook comprises a main support plate, a hoisting plate hingedly installed on one end of the main support plate, a hoisting sleeve fixedly installed on the other end of the main support plate and a lifting ear fixedly installed on the main support plate, the L-shaped hook and one end of the hoisting sleeve are hingedly connected via a connecting piece; a plurality of limit members are arranged on the connecting piece.

[0006] Preferably, the stand step is L-shaped, and a hoisting hole running through the left and right sides is provided on the stand step, and the two L-shaped hooks are inserted into the two ends of the hoisting hole.

[0007] Preferably, the L-shaped hook comprises an L-shaped suspension rod and a suspension ring fixedly mounted on the top of the L-shaped suspension rod.

[0008] Preferably, the connecting piece is made of galvanized steel pipe.

[0009] Preferably, the limiting member is a steel ring fixedly mounted on the connecting member.

[0010] Preferably, six limiting members are provided in total, and one limiting member is provided at both ends of the L-shaped hook and the lifting sleeve respectively.

[0011] In the utility model, the hoist uses two L-shaped hooks and one plate hook to form a three-point support for the grandstand steps, which can stably hoist and smoothly lower the grandstand steps, avoiding the corners from being damaged during lowering, ensuring the overall aesthetics of the grandstand steps after splicing, and improving the hoisting efficiency. Compared with the traditional hoisting method, the use of hoisting rings can be reduced, reducing the manufacturing cost. The set limiter can limit the lateral movement of the connecting piece and improve the safety of hoisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the utility model in operating state;

[0013] Figure 2 This is a left side schematic diagram of the grandstand step structure of the utility model;

[0014] Figure 3 It is a left side schematic diagram of the structure of the utility model in a state of being hoisted;

[0015] Figure 4 This is a schematic diagram of the overall structure of the utility model sling;

[0016] Figure 5 This is a schematic diagram of the front view of the L-shaped hook of the utility model;

[0017] Figure 6 This is a left side schematic diagram of the L-shaped hook of the utility model;

[0018] Figure 7 This is a rear view schematic diagram of the plate type hook of the utility model;

[0019] Figure 8 This is a left side schematic diagram of the plate type hook of the utility model;

[0020] Fig. 9 This is a schematic structural diagram of another embodiment of the utility model;

[0021] In the figure: 1. grandstand step; 2. L-shaped hook; 3. lifting hole; 4. plate hook; 5. connector; 6. limiter; 7. signboard; 8. L-shaped guard plate; 20. L-shaped lifting rod; 21. lifting ring; 40. main support plate; 41. lifting plate; 42. lifting sleeve; 43. lifting ear. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] like Figures 1 to 9 The hoisting device for the precast concrete stand steps of a sports stadium shown in the figure comprises an L-shaped hook 2 which is detachably arranged on the left and right sides of one end of the stand step 1 by plugging. The stand step 1 is L-shaped as a whole. A hoisting hole 3 which runs through the left and right sides of the stand step 1 is arranged on the end close to the L-shaped protrusion. Two L-shaped hooks 2 are plugged into the left and right ends of the hoisting hole 3. The L-shaped hook 2 comprises an L-shaped suspension rod 20 and a hoisting ring 21 which is fixedly installed on the top of the L-shaped suspension rod 20 by welding. The L-shaped suspension rod 20 is formed by two vertically arranged round steel bars spliced ​​by welding. The two L-shaped hooks 2 can adapt to stand steps 1 of different widths by plugging, and have strong adaptability.

[0024] A plate-type hook 4 is provided at the other end of the stand step 1. The plate-type hook 4 includes a main support plate 40, a lifting plate 41 hingedly installed on one end of the main support plate 40 through a pin shaft, a lifting sleeve 42 fixedly installed on the other end of the main support plate 40 through welding, and a lifting lug 43 fixedly installed on the main support plate 40 through welding. The lifting ring 21 on the L-shaped hook 2 and one end of the lifting sleeve 42 are hingedly connected through a connector 5 to form a three-point stable support. The lifting lug 43 and the lifting sleeve 42 are relatively arranged on the upper and lower sides of the main support plate 40. The lifting lug 43 is in a broken line shape as a whole. When the lifting lug 43 and the lifting sleeve 42 are connected, the top of the lifting lug 43 is in a vertical state, which is convenient for lifting operations. The connector 5 is made of a galvanized steel pipe. The hoisting plate 41 and the main support plate 40 are connected in a detachable manner. During operation, hoisting plates 41 of different specifications and models can be selected according to the length and width of the stand steps 1 to be hoisted, thereby improving the versatility of the hoist and reducing the overall manufacturing cost.

[0025] A plurality of limit members 6 are provided on the connecting member 5, and the limit members 6 are steel rings fixedly mounted on the connecting member 5. A total of six limit members 6 are provided, and one limit member 6 is provided at the left and right ends of the two L-shaped hooks 2 and the lifting sleeve 42. Specifically, the limit members 6 can be fixedly mounted on the connecting member 5 by welding to limit the positions of the L-shaped hooks 2 and the lifting sleeve 42. The limit members 6 can also be fixedly mounted on the connecting member 5 by fasteners to facilitate the disassembly and replacement of the L-shaped hooks 2 and the lifting sleeve 42.

[0026] A signboard 7 is provided on the main support plate 40 or the hoisting plate 41, and the signboard 7 is provided with the maximum load, length and width information that the hoist can hoist, so as to avoid hoisting accidents caused by overloading. When lowering, the hoisting plate 41 touches the ground first, so as to avoid collision with the corners of the stand step 1. In a preferred embodiment, an L-shaped guard plate 8 is provided on the hoisting plate 41 for wrapping the corners of the stand step 1, so as to further protect the stand step 1.

[0027] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A hoisting device for hoisting precast concrete stands and steps in sports stadiums, characterized in that: The invention comprises an L-shaped hook (2) detachably arranged on both sides of one end of a grandstand step (1); a plate-type hook (4) is arranged on the other end of the grandstand step (1); the plate-type hook (4) comprises a main support plate (40), a hanging plate (41) hingedly installed on one end of the main support plate (40), a hanging sleeve (42) fixedly installed on the other end of the main support plate (40), and a hanging ear (43) fixedly installed on the main support plate (40); the L-shaped hook (2) and one end of the hanging sleeve (42) are hingedly connected via a connecting piece (5); and a plurality of limit members (6) are arranged on the connecting piece (5).

2. The hoisting device for hoisting precast concrete stands and steps of sports stadiums according to claim 1 is characterized in that: The stand step (1) is L-shaped, and is provided with a hanging hole (3) penetrating the left and right sides of the stand step (1), and the two L-shaped hanging hooks (2) are inserted into the two ends of the hanging hole (3).

3. The hoisting device for hoisting precast concrete stands and steps of sports stadiums according to claim 1 or 2, characterized in that: The L-shaped hook (2) comprises an L-shaped suspension rod (20) and a suspension ring (21) fixedly mounted on the top of the L-shaped suspension rod (20).

4. The hoisting device for hoisting precast concrete stands and steps of a sports stadium according to claim 3 is characterized in that: The connecting piece (5) is made of a galvanized steel pipe.

5. The hoisting device for hoisting precast concrete stands and steps of sports stadiums according to claim 4 is characterized in that: The limiting member (6) is a steel ring fixedly mounted on the connecting member (5).

6. The hoisting device for hoisting precast concrete stands and steps of sports stadiums according to claim 1 or 5, characterized in that: A total of six limiting members (6) are provided, with one limiting member (6) being provided at each end of the L-shaped lifting hook (2) and the lifting sleeve (42).

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