Multifunctional hoisting clamp for precast beam installation

Abstract

The utility model relates to the technical field of hoisting clamps, and discloses a multifunctional hoisting clamp for precast beam installation, which comprises a support tube, two clamping plates arranged on the bottom surface of the support tube, a PLC (programmable logic controller) arranged on the top surface of the support tube, and a replacement component arranged on the top surfaces of the clamping plates, the replacing assembly is used for replacing the clamping plate and comprises two T-shaped plates, the two T-shaped plates are both fixedly installed on the top face of the clamping plate, two movable plates are movably connected into the supporting pipe in a sleeved mode, two T-shaped holes are formed in one side of each movable plate, and the two T-shaped plates are arranged in the T-shaped holes. Through cooperation of the supporting pipe, the clamping plate, the moving plate, the T-shaped hole, the T-shaped plate and the first limiting hole, the effect of replacing the clamping plate can be achieved, the whole clamp does not need to be replaced for hoisting, the clamping plate replacement process is simple and convenient, compatibility of precast beams with multiple sections and sizes is achieved, use convenience is improved, and use is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of hoisting clamp technology, and in particular to a multi-functional hoisting clamp for precast beam installation. Background Technology

[0002] Precast beam installation hoisting clamps are core tools used for the hoisting, transportation, and precise installation of precast concrete beams in bridge, building, and other engineering projects. Their main functions include: clamping and fixing: clamping the precast beams mechanically or hydraulically to prevent slippage; balancing force: ensuring that the beam is subjected to uniform force during hoisting and avoiding excessive local stress; posture adjustment: some clamps support rotation or tilting, facilitating adjustment of the beam installation angle in mid-air; and safety protection: preventing pressure damage or scratches to the beam surface during hoisting.

[0003] In existing technologies, traditional hoisting clamps for precast beam installation only support beams of a single size or shape: for example, the shape of the clamps is fixed and cannot be compatible with different cross-sections, such as T-shaped, box-shaped, hollow beams, or length specifications. Frequent replacement of suitable clamps is required for hoisting, which is inefficient. At the same time, it relies on manual adjustment of clamping force and position (such as tightening bolts and adjusting hydraulic valves), which is time-consuming and prone to unstable clamping due to operational errors. There is an urgent need for a multi-functional hoisting clamp for precast beam installation to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a multi-functional hoisting clamp for precast beam installation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-functional hoisting clamp for precast beam installation includes a support tube with two clamping plates on its bottom surface and a PLC controller on its top surface. It also includes a replacement assembly disposed on the top surface of the clamping plates for replacing them. The replacement assembly includes two T-shaped plates, both fixedly mounted on the top surface of the clamping plates. Two movable plates are movably sleeved inside the support tube. Each movable plate has two T-shaped holes on one side, which movably engage with the T-shaped plates. A first limiting hole is provided on one side of each T-shaped plate. A second limiting hole is provided on one side of the plate. A limiting post is movably sleeved on the inner circular wall of the second limiting hole. The limiting post is movably sleeved with the first limiting hole. An inner groove is provided on the outer circular wall of the limiting post. A limiting chamber is fixedly installed on one side of the movable plate. A rectangular through hole is provided on one side of the limiting chamber. A limiting frame is movably sleeved inside the rectangular through hole. A spring is fixedly installed on the top surface of the limiting frame. The spring is fixedly installed with the inner top surface of the limiting chamber. The limiting frame is movably sleeved with the inner groove. A measuring component is provided to measure the clamping force of the clamping plate to prevent over-clamping.

[0007] As a further embodiment of this utility model, the measuring component includes: two circular grooves, both of which are formed inside one side of the clamping plate, a pressure sensor is fixedly sleeved inside the circular groove, the pressure sensor is electrically connected to the PLC controller, and a support frame is fixedly installed at one end of the pressure sensor.

[0008] As a further embodiment of this utility model, a plurality of limiting grooves are provided on one side of the inner side of the clamping plate, and the limiting grooves are movably sleeved with the support frame.

[0009] As a further embodiment of this utility model, a threaded hole is provided on one side of the T-shaped hole, and a threaded post is threadedly connected to the inner circular wall of the threaded hole. A dual-axis geared motor is fixedly sleeved inside the support tube. One end of the drive shaft of the dual-axis geared motor is fixedly installed with the threaded post, and the dual-axis geared motor is electrically connected to the PLC controller.

[0010] As a further embodiment of this utility model, limiting plates are fixedly installed on both sides of the support tube, and a second circular through hole is opened on one side of the limiting plate, and the inner wall of the second circular through hole is movably sleeved with the threaded column.

[0011] As a further embodiment of this utility model, a second circular groove is provided on one side of the inside of the clamping plate, and a laser ranging sensor is fixedly sleeved on the inner wall of the second circular groove. The laser ranging sensor is electrically connected to the PLC controller.

[0012] As a further embodiment of this utility model, a lifting wire rope, a protective cover, and a storage battery are fixedly installed on the top surface of the support pipe. One side of the storage battery is fixedly installed with the PLC controller, and the storage battery is located inside the protective cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By coordinating the support tube, clamping plate, moving plate, T-shaped hole, T-shaped plate and first limiting hole, the clamping plate can be replaced without replacing the entire clamp for hoisting. The clamping plate replacement process is relatively simple and convenient, realizing compatibility with precast beams of multiple cross sections and sizes, improving ease of use and making it more convenient to use.

[0015] 2. Using the set support frame, when hoisting the precast beam, the lifting wire rope is connected to the crane hook, so that the support pipe is suspended above the precast beam. The dual-axis reduction motor is started to drive the threaded column to rotate, so that the two clamping plates clamp the two sides of the beam. During the clamping process, the support frame contacts the side of the beam and transmits the pressure to the pressure sensor. The pressure sensor and the limit groove work together to detect the clamping force in real time and feed it back to the PLC controller to avoid over-clamping or under-clamping and prevent unstable clamping due to operational errors.

[0016] 3. The laser rangefinder sensor detects the beam width before clamping and drives the dual-axis geared motor to automatically adjust the position of the clamping plate, realizing a one-click adaptation function. The set battery provides a stable power supply to the PLC controller. The PLC controller can be a remote control model and supports handheld remote control operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a multi-functional hoisting clamp for precast beam installation proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the support tube structure of a multifunctional hoisting clamp for precast beam installation proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the clamping plate structure of a multifunctional hoisting clamp for precast beam installation proposed in this utility model;

[0020] Figure 4 for Figure 2 A partial structural diagram of A in the middle;

[0021] Figure 5 for Figure 3 A schematic diagram of the partial structure of B in the diagram;

[0022] Figure 6This is a schematic diagram of the first limiting hole structure of a multifunctional hoisting clamp for precast beam installation proposed in this utility model;

[0023] Figure 7 This is a schematic diagram of the pressure sensor structure of a multifunctional hoisting clamp for precast beam installation proposed in this utility model.

[0024] In the diagram: 1. Support tube; 2. Clamping plate; 3. Moving plate; 4. T-shaped hole; 5. T-shaped plate; 6. First limiting hole; 7. Inner groove; 8. Second limiting hole; 9. Limiting post; 10. Limiting compartment; 11. Limiting frame; 12. Spring; 13. Laser rangefinder sensor; 14. Pressure sensor; 15. Limiting groove; 16. Support frame; 17. Limiting plate; 18. Lifting wire rope; 19. Protective cover; 20. Battery; 21. Dual-axis geared motor; 22. Threaded post; 23. Threaded hole. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figures 1-7A multi-functional hoisting clamp for precast beam installation includes: a support pipe 1, with two clamping plates 2 on the bottom surface of the support pipe 1, and a PLC controller on the top surface of the support pipe 1; and a replacement component, which is located on the top surface of the clamping plates 2 for replacing the clamping plates 2. The replacement component includes: two T-shaped plates 5, both of which are fixedly installed on the top surface of the clamping plates 2; two movable plates 3 are movably sleeved inside the support pipe 1; two T-shaped holes 4 are opened on one side of the movable plates 3, and the T-shaped holes 4 are movably sleeved with the T-shaped plates 5; a first limiting hole 6 is opened on one side of the movable plates 3; and one side of the movable plates 3 is provided with a first limiting hole 6. A second limiting hole 8 is provided on the side. A limiting post 9 is movably sleeved on the inner circular wall of the second limiting hole 8. The limiting post 9 is movably sleeved with the first limiting hole 6. An inner groove 7 is provided on the outer circular wall of the limiting post 9. A limiting chamber 10 is fixedly installed on one side of the moving plate 3. A rectangular through hole is provided on one side of the limiting chamber 10. A limiting frame 11 is movably sleeved inside the rectangular through hole. A spring 12 is fixedly installed on the top surface of the limiting frame 11. The spring 12 is fixedly installed on the inner top surface of the limiting chamber 10. The limiting frame 11 is movably sleeved with the inner groove 7. A measuring component is provided to measure the clamping force of the clamping plate 2 to prevent over-clamping.

[0029] In use, when the support pipe 1 is used to lift precast beams, if the size of the object being lifted is different or different cross-sections (T-shaped, box-shaped, hollow beams, etc.) need to be compatible, and the clamping plate 2 needs to be replaced, the operator manually grasps the limiting post 9 and pulls it, while simultaneously moving the limiting frame 11 upwards inside the limiting chamber 10 and compressing the spring 12, causing the limiting frame 11 to disengage from the inner groove 7. Then, the limiting post 9 is pulled out from the second limiting hole 8 and the first limiting hole 6, and the clamping plate 2 is pushed to move, causing the T-shaped plate 5 to disengage from the T-shaped hole 4, thus removing the clamping plate 2. The T-shaped plate 5 of the new clamping plate 2 is then installed and reset in reverse order, completing the replacement of the clamping plate 2. This achieves compatibility with multiple cross-sections and sizes, improving ease of use.

[0030] In this embodiment, the measuring component includes: two circular slots, both of which are opened inside one side of the clamping plate 2. A pressure sensor 14 is fixedly sleeved inside the circular slots. The pressure sensor 14 is electrically connected to the PLC controller. A support frame 16 is fixedly installed at one end of the pressure sensor 14. Several limiting slots 15 are opened inside one side of the clamping plate 2. The limiting slots 15 are movably sleeved with the support frame 16. A threaded hole 23 is opened on one side of the T-shaped hole 4. A threaded post 22 is threadedly connected to the inner circular wall of the threaded hole 23. A dual-axis geared motor 21 is fixedly sleeved inside the support tube 1. One end of the drive shaft of the dual-axis geared motor 21 is fixedly installed with the threaded post 22. The dual-axis geared motor 21 is electrically connected to the PLC controller.

[0031] In use, the support frame 16 is used to connect the lifting wire rope 18 to the crane hook when hoisting the precast beam, suspending the support pipe 1 above the precast beam. The dual-axis reduction motor 21 is started to drive the threaded column 22 to rotate, converting the rotational motion into linear motion, which moves the moving plate 3 within the support pipe 1, causing the two clamping plates 2 to clamp the sides of the beam. During clamping, the support frame 16 contacts the sides of the beam and transmits pressure to the pressure sensor 14. The pressure sensor 14, in conjunction with the limit groove 15, detects the clamping force in real time and feeds it back to the PLC controller to prevent over-clamping or under-clamping.

[0032] In this embodiment, limit plates 17 are fixedly installed on both sides of the support tube 1. A second circular through hole is opened on one side of the limit plate 17. The inner circular wall of the second circular through hole is movably sleeved with the threaded post 22. A second circular groove is opened on one side of the inside of the clamping plate 2. A laser rangefinder 13 is fixedly sleeved on the inner circular wall of the second circular groove. The laser rangefinder 13 is electrically connected to the PLC controller. A lifting wire rope 18, a protective cover 19 and a battery 20 are fixedly installed on the top surface of the support tube 1. One side of the battery 20 is fixedly installed with the PLC controller. The battery 20 is located inside the protective cover 19.

[0033] In use, the laser rangefinder 13 detects the width of the beam before clamping and drives the dual-axis reduction motor 21 to automatically adjust the position of the clamping plate 2, realizing the one-click adaptation function. The set battery 20 provides a stable power supply to the PLC controller. The PLC controller adopts a remote control model and supports handheld remote control operation.

[0034] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0035] With the support pipe 1 in place, when users need to use the support pipe 1 to lift precast beams, if the size of the object being lifted is different or it needs to be compatible with different cross-sections (T-shaped, box-shaped, hollow beams, etc.), and the clamping plate 2 needs to be replaced, the operator manually grabs the limiting post 9 and pulls it, while simultaneously moving the limiting frame 11 upward inside the limiting chamber 10 and compressing the spring 12, so that the limiting frame 11 is disengaged from the limiting of the inner groove 7. Then, the limiting post 9 is pulled out from the second limiting hole 8 and the first limiting hole 6, and the clamping plate 2 is pushed to move so that the T-shaped plate 5 is disengaged from the T-shaped hole 4, and the clamping plate 2 can be removed. The T-shaped plate 5 of the new clamping plate 2 is then installed and reset in reverse order according to the above steps. The operation is relatively simple, thus achieving the effect of replacing the clamping plate 2 without the need to replace the entire clamp for lifting. The process of replacing the clamping plate 2 is relatively simple and convenient, achieving compatibility with precast beams of multiple cross-sections and sizes, improving ease of use, and making it more convenient to use.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A multi-functional hoisting clamp for precast beam installation, comprising a support pipe (1), wherein two clamping plates (2) are provided on the bottom surface of the support pipe (1), and a PLC controller is provided on the top surface of the support pipe (1), characterized in that, Also includes: A replacement component is provided on the top surface of the clamping plate (2) for replacing the clamping plate (2). The replacement component includes two T-shaped plates (5), both of which are fixedly installed on the top surface of the clamping plate (2). Two movable plates (3) are movably sleeved inside the support tube (1). Two T-shaped holes (4) are opened on one side of each movable plate (3). The T-shaped holes (4) are movably sleeved with the T-shaped plates (5). A first limiting hole (6) is opened on one side of each T-shaped plate (5), and a second limiting hole (8) is opened on one side of each movable plate (3). A limiting post (9) is movably sleeved on the inner circular wall of the positioning hole (8). The limiting post (9) is movably sleeved with the first limiting hole (6). An inner groove (7) is opened on the outer circular wall of the limiting post (9). A limiting chamber (10) is fixedly installed on one side of the moving plate (3). A rectangular through hole is opened on one side of the limiting chamber (10). A limiting frame (11) is movably sleeved inside the rectangular through hole. A spring (12) is fixedly installed on the top surface of the limiting frame (11). The spring (12) is fixedly installed on the inner top surface of the limiting chamber (10). The limiting frame (11) is movably sleeved with the inner groove (7). A measuring component is used to measure the clamping force of the clamping plate (2) to prevent over-clamping.

2. The multi-functional hoisting clamp for precast beam installation according to claim 1, characterized in that, The measuring component includes two circular slots, both of which are opened on one side inside the clamping plate (2). A pressure sensor (14) is fixedly sleeved inside the circular slot. The pressure sensor (14) is electrically connected to the PLC controller. A support frame (16) is fixedly installed at one end of the pressure sensor (14).

3. A multi-functional hoisting clamp for precast beam installation according to claim 2, characterized in that, The clamping plate (2) has several limiting grooves (15) on one side inside, and the limiting grooves (15) are movably connected to the support frame (16).

4. The multi-functional hoisting clamp for precast beam installation according to claim 1, characterized in that, A threaded hole (23) is provided on one side of the T-shaped hole (4). A threaded post (22) is threadedly connected to the inner circular wall of the threaded hole (23). A dual-axis geared motor (21) is fixedly sleeved inside the support tube (1). One end of the drive shaft of the dual-axis geared motor (21) is fixedly installed with the threaded post (22). The dual-axis geared motor (21) is electrically connected to the PLC controller.

5. A multi-functional hoisting clamp for precast beam installation according to claim 4, characterized in that, Limiting plates (17) are fixedly installed on both sides of the support tube (1). A second circular through hole is opened on one side of the limiting plate (17), and the inner wall of the second circular through hole is movably connected to the threaded column (22).

6. A multi-functional hoisting clamp for precast beam installation according to claim 1, characterized in that, The clamping plate (2) has a second circular groove on one side inside. A laser rangefinder (13) is fixedly sleeved on the inner wall of the second circular groove. The laser rangefinder (13) is electrically connected to the PLC controller.

7. A multi-functional hoisting clamp for precast beam installation according to claim 1, characterized in that, The top surface of the support pipe (1) is fixedly installed with a lifting wire rope (18), a protective cover (19) and a storage battery (20). One side of the storage battery (20) is fixedly installed with the PLC controller, and the storage battery (20) is located inside the protective cover (19).

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