Prefabricated concrete circular pipe culvert hoisting tool

Abstract

The utility model belongs to the technical field of circular pipe culvert hoisting, and particularly relates to a prefabricated concrete circular pipe culvert hoisting tool which comprises a U-shaped hoisting piece, a hoisting piece and a hoisting piece, the hoisting piece comprises an upper arm, a telescopic arm and a connecting plate, the upper arm and the telescopic arm are horizontally and vertically arranged at intervals, and the upper end of the connecting plate is vertically welded to the rear end of the upper arm, and the lower end of the connecting plate is vertically welded to the rear end of the telescopic arm; a barrier plate is fixed at the top of the front end of the telescopic arm; the lifting ring is fixed at the top of the upper arm and is close to the front end of the upper arm; the weight box is fixed at the front end of the upper arm; and a balancing weight is placed in the weight box. The hoisting tool can meet the requirements of prefabricated concrete circular pipe culverts with different lengths, the application range of the hoisting tool is widened, and the practicability of the hoisting tool is improved; besides, the hoisting tool is reasonable in structure, easy to manufacture, low in cost and capable of being used repeatedly, and construction cost can be reduced while hoisting efficiency and safety are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circular pipe culvert hoisting, and in particular relates to a prefabricated concrete circular pipe culvert hoisting tool. Background Art

[0002] At present, my country's engineering construction is in a stage of rapid development. Drainage engineering is an important part of engineering construction, and precast concrete circular culverts are one of the important building materials for drainage engineering. The common precast concrete circular culvert transportation and hoisting usually involves manually passing a steel wire rope through the center of the precast concrete circular culvert for bundling, and then hanging the steel wire rope on the hook of the truck crane for lifting and transportation. However, since each precast concrete circular culvert needs to be manually tied and hoisted, the cycle is repeated, which greatly delays the efficiency of transportation and hoisting.

[0003] There are existing circular culvert lifting devices that can solve the above problems. For example, CN212924079U discloses an efficient and safe concrete circular culvert lifting device, including a lifting piece, which is inserted into the concrete circular culvert and abuts against the concrete circular culvert, the lifting piece includes a first lifting body, a second lifting body, and a connecting body for connecting the first lifting body and the second lifting body, the first lifting body, the second lifting body and the connecting body forming a U shape; a clamping ring, which is connected to the first lifting body and butts with the lifting equipment; a stiffening plate, which is arranged at the connection between the first lifting body and the connecting body to enhance the strength of the lifting piece; a counterweight box, which is connected to the end of the first lifting body away from the connecting body to balance the lifting piece, and the counterweight box and the clamping ring are arranged on the same side of the lifting piece; when the lifting piece abuts against the concrete circular culvert, the counterweight box is located on the outer circumferential surface of the concrete circular culvert, and the lifting equipment lifts the lifting piece through the clamping ring to lift the concrete circular culvert, which has the advantages of convenient operation, easy use and strong practicality. It is undeniable that the concrete circular culvert lifting device disclosed in the patent can indeed achieve the above-mentioned effects, but it still has certain shortcomings: the length of its second lifting body is fixed and cannot be adjusted, and cannot meet the lifting needs of concrete circular culverts of different lengths; in addition, although the counterweight box provided can be used to balance the lifting parts, during the actual lifting process, the concrete circular culvert will inevitably shake, and there is a risk of the concrete circular culvert falling off the second lifting body.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a prefabricated concrete circular pipe culvert hoisting tool to solve the problems existing in the concrete circular pipe culvert hoisting device in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prefabricated concrete circular culvert hoisting tool, comprising:

[0008] A "U"-shaped lifting piece, comprising an upper arm and a telescopic arm arranged horizontally at intervals, and a connecting plate with an upper end vertically welded to the rear end of the upper arm and a lower end vertically welded to the rear end of the telescopic arm; a blocking plate is fixed to the top of the front end of the telescopic arm;

[0009] A lifting ring, fixed to the top of the upper arm and close to the front end of the upper arm;

[0010] A counterweight box is fixed to the front end of the upper arm; a counterweight block is placed in the counterweight box.

[0011] Preferably, the telescopic arm includes a fixed arm body and a telescopic arm body which is sleeved in the fixed arm body and cooperates with the sliding guide therewith; the lower end of the connecting plate is welded to the rear end of the fixed arm body; and the blocking plate is fixed to the top of the front end of the telescopic arm body.

[0012] Preferably, a first long slot hole is opened in the middle of the telescopic arm body; a second long slot hole corresponding to the first long slot hole is opened on the fixed arm body; the telescopic arm also includes a plurality of fixing bolts, which pass through the first long slot hole and the second long slot hole and are threadedly connected to the fastening nut to fix the relative position of the fixed arm body and the telescopic arm body.

[0013] Preferably, reinforcement plates are welded at the connection between the connecting plate and the fixed arm body and at the connection between the counterweight box and the upper arm.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model is based on solving the problems existing in the existing concrete circular culvert hoisting device, and is provided with multiple components such as a hoisting piece, a lifting ring and a counterweight box, and the specific structure of the telescopic arm in the hoisting piece is designed and optimized so that it can meet the needs of precast concrete circular culverts of different lengths, which can expand the scope of application of the device and improve its practicality. In addition, by setting a counterweight block in the counterweight box, the hoisting piece during the hoisting process can be balanced, making the hoisting process safer and more reliable. Secondly, the hoisting tool of the utility model has a reasonable structure, is simple to make, has a low cost, and can be used repeatedly. While improving the hoisting efficiency and safety, it can reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1Sectional view;

[0018] Figure 3 This is a diagram of the use status of the device of the utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Description of main reference numerals:

[0021] 1. Lifting parts; 2. Upper arm; 3. Telescopic arm; 31. Fixed arm body; 311. Second long slot hole; 32. Telescopic arm body; 321. First long slot hole; 33. Fastening bolts; 4. Connecting plate; 5. Blocking plate; 6. Lifting ring; 7. Counterweight box; 71. Counterweight block; 8. Reinforcement plate; 9. Wire rope; 10. Precast concrete circular culvert. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solution of the utility model patent. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] See attached Figure 1-4 , a prefabricated concrete circular pipe culvert lifting tool, comprising:

[0025] The hoisting member 1 is in the shape of the letter "U", and the hoisting member 1 includes an upper arm 2 and a telescopic arm 3 arranged horizontally at intervals from top to bottom, and a connecting plate 4 vertically welded to the rear end of the upper arm 2 at the upper end and vertically welded to the rear end of the telescopic arm 3 at the lower end; a blocking plate 5 is fixed to the top of the front end of the telescopic arm 3; in this embodiment, the telescopic arm 3 includes a fixed arm body 31 and a telescopic arm body 32 sleeved in the fixed arm body 31 and matched with the sliding guide thereof; the lower end of the connecting plate 4 is welded to the rear end of the fixed arm body 31; the blocking plate 5 is fixed to the top of the front end of the telescopic arm body 32; it should be supplemented here that The fixed arm body 31 is a hollow structure with a rectangular cross section and an open front end, and the telescopic arm body 32 is inserted into the fixed arm body 31 from the front end of the fixed arm body 31; more specifically, a first long slot hole 321 is opened in the middle of the telescopic arm body 32; a second long slot hole 311 corresponding to the first long slot hole 321 is opened on the fixed arm body 31; the telescopic arm 3 also includes a plurality of fixing bolts 33, which penetrate the first long slot hole 321 and the second long slot hole 311 and are then threadedly connected with a fastening nut to fix the relative positions of the fixed arm body 31 and the telescopic arm body 32;

[0026] A lifting ring 6 is fixed to the top of the upper arm 2 and close to the front end of the upper arm 2;

[0027] The counterweight box 7 is fixed to the front end of the upper arm 2 ; a counterweight block 71 is placed in the counterweight box 7 .

[0028] In this embodiment, reinforcing plates 8 are welded to the connection between the connecting plate 4 and the fixed arm body 31 and to the connection between the counterweight box 7 and the upper arm 2 .

[0029] When in use, the length of the telescopic arm 3 is adjusted according to the length of the precast concrete circular pipe culvert 10 to be hoisted, specifically: loosen the fastening nut on the fixing bolt 33, move the telescopic arm body 32, and at this time, the rear end of the first long slot hole 321 abuts against one of the fixing bolts 33. When the length of the entire telescopic arm 3 is equivalent to the length of the precast concrete circular pipe culvert 10 to be hoisted, tighten the fastening nut on the fixing bolt 33, and the fixing bolt 33 at the rear end abuts against the rear end of the first long slot hole 321, thereby limiting the extension of the mobile telescopic arm body 32 and preventing the telescopic arm body 32 from continuing to extend. At the same time, when the fastening nut on the fixing bolt 33 is tightened, the fixed arm body 31 exerts an extrusion effect on the telescopic arm body 32, which plays an auxiliary role in fixing the relative positions of the fixed arm body 31 and the telescopic arm body 32.

[0030] During hoisting, the telescopic arm 3 extends into the precast concrete circular pipe culvert 10 and the front end extends from the front end of the precast concrete circular pipe culvert 10, and the inner wall of the blocking plate 5 abuts against the front end of the precast concrete circular pipe culvert 10. With the help of the steel wire rope 9 passing through the lifting ring 6 on the upper arm 2 and connecting it to the hook of the external truck crane, the truck crane slightly lifts the precast concrete circular pipe culvert 10 off the ground, and then adds a suitable number of counterweight blocks 71 into the counterweight box 7, so that the hoisting component 1 can maintain balance when lifting the precast concrete circular pipe culvert 10, and then the precast concrete circular pipe culvert 10 can be hoisted and transported with the help of the external truck crane.

[0031] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A prefabricated concrete circular culvert hoisting tool, characterized in that: include: A "U"-shaped lifting piece, comprising an upper arm and a telescopic arm arranged horizontally at intervals, and a connecting plate with an upper end vertically welded to the rear end of the upper arm and a lower end vertically welded to the rear end of the telescopic arm; a blocking plate is fixed to the top of the front end of the telescopic arm; A lifting ring, fixed to the top of the upper arm and close to the front end of the upper arm; A counterweight box is fixed to the front end of the upper arm; a counterweight block is placed in the counterweight box.

2. The precast concrete circular culvert lifting tool according to claim 1 is characterized in that: The telescopic arm comprises a fixed arm body and a telescopic arm body sleeved in the fixed arm body and cooperating with the sliding guide therewith; The lower end of the connecting plate is welded to the rear end of the fixed arm body; and the blocking plate is fixed to the top of the front end of the telescopic arm body.

3. The precast concrete circular culvert lifting tool according to claim 2 is characterized in that: A first long slot hole is opened in the middle of the telescopic arm body; a second long slot hole corresponding to the first long slot hole is opened on the fixed arm body; The telescopic arm further comprises a plurality of fixing bolts, which penetrate through the first long slot hole and the second long slot hole and are then threadedly connected with a fastening nut to fix the relative positions of the fixed arm body and the telescopic arm body.

4. The precast concrete circular culvert lifting tool according to claim 2 is characterized in that: Reinforcement plates are welded at the connection between the connection plate and the fixed arm body and at the connection between the counterweight box and the upper arm.

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