Anti-loose detection device for steel wire rope of crane

Abstract

A connecting rod is connected with a protective shell, an anti-loosening fixed pulley is arranged at one end of the protective shell, an adjusting nut is arranged in the protective shell, an adjusting screw rod is connected in the adjusting nut, two ends of the adjusting screw rod are arranged in the end wall of the protective shell in a penetrating mode, and a fixing plate is arranged at the penetrating-out end of the adjusting screw rod. Connecting holes are formed in the fixing plates, the anti-disengaging fixed pulley is clamped between the fixing plates, a screw penetrates through the connecting holes and shaft holes of the anti-disengaging fixed pulley, a pressure spring is sleeved outside the adjusting screw, two ends of the pressure spring are respectively connected with the adjusting nut and the protective shell, and an encoder and a controller are arranged on the inner wall of the protective shell. According to the utility model, the combined application of the adjusting screw rod, the encoder and the controller is adopted, so that the device is simple and convenient to operate and maintain, meanwhile, the device can quickly respond in the early warning and processing processes, and the real-time monitoring and accurate adjustment of the tensioning state of the steel wire rope are realized, so that the safety and the stability of the operation of the crown block are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane hoisting, and in particular relates to a crane wire rope anti-loosening detection device. Background Art

[0002] Cranes are commonly used lifting equipment in industrial production, used for lifting and moving goods in factories, warehouses and other places. Cranes are usually composed of wire ropes, motors, transmission systems, etc., and the tension of the wire ropes is crucial to the safe operation of the cranes. However, due to changes in the working environment and the wear of the wire ropes themselves, the wire ropes may become loose, which will lead to unstable operation of the overhead crane and even safety accidents. The pulleys may fall off, get stuck, or even fall from a high altitude, which not only causes frequent equipment failures, but also poses safety risks to on-site operators and equipment. Utility Model Content

[0003] The utility model aims to provide a crane wire rope anti-loosening detection device to solve the problem that the traditional method relies on manual inspection, has low efficiency and low accuracy.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A crane wire rope anti-loosening detection device comprises a protective shell, an anti-slip fixed pulley and a connecting rod, wherein the connecting rod is fixedly connected to the top surface of the protective shell, the anti-slip fixed pulley is arranged at one end of the protective shell, an adjusting nut is arranged in the protective shell, an adjusting screw is threaded in the adjusting nut, two ends of the adjusting screw are respectively penetrated in the end wall of the protective shell, a protruding end of the adjusting screw is symmetrically provided with a fixing plate, a connecting hole is arranged on the fixing plate, the anti-slip fixed pulley is clamped between the fixing plates, a screw is penetrated in the connecting hole and the axial hole of the anti-slip fixed pulley for rotational connection, a pressure spring is sleeved on the outside of the adjusting screw, one end of the pressure spring is fixedly connected to the adjusting nut, and the other end is fixedly connected to the inner wall of the protective shell near one end of the anti-slip fixed pulley, and an encoder and a controller which are interconnected are arranged on the inner wall of the protective shell.

[0006] In order to further realize the utility model, the long axis of the adjusting screw overlaps with the long axis of the protective shell, the fixing plate is parallel to the long axis of the adjusting screw, and the screw is perpendicular to the long axis of the adjusting screw.

[0007] In order to further realize the utility model, a slot gap is provided between the anti-slip fixed pulley and the end of the adjusting screw.

[0008] In order to further realize the utility model, the controller adopts a two-open and two-closed 0.20 mA controller.

[0009] In order to further realize the utility model, the connecting rod is perpendicular to the top surface of the protective shell.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The adjustment screw of the utility model is arranged in the telescopic pressure spring, and cooperates with the adjustment nut to realize the precise control of the sensitivity and response speed of the device, ensuring that the device can be applied to wire ropes of different specifications. The pressure spring is made of stainless steel spring, which has good corrosion resistance and long service life. The compression amount of the spring is adjusted according to actual needs. The encoder is installed on the telescopic spring to monitor the tension of the pressure spring and convert it into an electrical signal output. The 0.20 mA controller receives the electrical signal output by the encoder and judges the operating status according to the set threshold. When the telescopic pressure spring reaches the predetermined threshold, the controller will trigger the corresponding alarm and shutdown to ensure the safe operation of the overhead crane.

[0012] The device of the utility model has a simple structure and is easy to install, does not require substantial changes to the original structure of the overhead crane, and is compatible with existing overhead crane equipment.

[0013] The utility model adopts the combined application of the adjusting screw, the encoder and the controller, so that the operation and maintenance of the device are simple and convenient. At the same time, the device can respond quickly during the early warning and processing process, realizing real-time monitoring and precise adjustment of the tensioning state of the wire rope, thereby improving the safety and stability of the overhead crane operation.

[0014] The utility model has the advantages of simple structure, convenient manufacture and simple maintenance, and can be manufactured by relevant technicians according to the size of the crane, and can be widely applied to cranes of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a diagram of the use state of the utility model;

[0017] The meanings of the accompanying drawings are as follows: 1. Protective shell; 2. Anti-slip fixed pulley; 3. Connecting rod; 4. Adjusting nut; 5. Adjusting screw; 6. Fixing plate; 7. Screw; 8. Pressure spring; 9. Encoder; 10. Controller; 11. Slot gap; 12. Wire rope; 13. Crane winch drum frame. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0019] like Figure 1-2As shown, a crane wire rope anti-loosening detection device comprises a protective shell 1, an anti-slip fixed pulley 2 and a connecting rod 3, wherein the connecting rod 3 is perpendicular to and fixedly connected to the top surface of the protective shell 1, the anti-slip fixed pulley 2 is arranged at one end of the protective shell 1, an adjusting nut 4 is arranged in the protective shell 1, an adjusting screw 5 is threaded in the adjusting nut 4, a slot gap 11 is provided between the anti-slip fixed pulley 2 and the end of the adjusting screw 5, the two ends of the adjusting screw 5 are respectively penetrated in the end wall of the protective shell 1, a fixing plate 6 is symmetrically arranged at one end of the adjusting screw 5, a connecting hole is arranged on the fixing plate 6, and the anti-slip fixed pulley 2 is provided with a fixing plate 6. The fixed pulley 2 is clamped between the fixing plates 6, and a screw 7 is passed through the connecting hole and the axial hole of the anti-slip fixed pulley 2 for rotational connection. A pressure spring 8 is sleeved on the outside of the adjusting screw 5, one end of the pressure spring 8 is fixedly connected to the adjusting nut 4, and the other end is fixedly connected to the inner wall of the protective shell 1 near one end of the anti-slip fixed pulley 2, the long axis of the adjusting screw 5 overlaps with the long axis of the protective shell 1, the fixing plate 6 is parallel to the long axis of the adjusting screw 5, the screw 7 is perpendicular to the long axis of the adjusting screw 5, and an encoder 9 and a two-open-two-closed 0.20 mA controller 10 that are interconnected are arranged on the inner wall of the protective shell 1.

[0020] First, the device of the utility model is welded or screwed to the bottom surface of the crane hoisting drum frame 13 through the connecting rod 3.

[0021] Before use, select the anti-slip fixed pulley 2 of appropriate diameter and the pressure spring 8 of appropriate compression amount according to the specifications of the wire rope 12, insert the wire rope 12 into the slot gap 11, insert the screw 7 into the shaft hole and the connecting hole to connect the anti-slip fixed pulley 2 with the fixed plate 6, turn the adjusting screw 5 to make the adjusting nut 4 move toward the anti-slip fixed pulley 2, and push the pressure spring 8 to the appropriate extension and contraction amount.

[0022] When the steel wire rope 12 touches the ground and becomes loose, the anti-slip fixed pulley 2 and the adjusting screw 5 lose their outward pulling force, and the pressure spring 8 stretches toward the adjusting nut 4 in order to restore its original state. The encoder 9 monitors the tension of the pressure spring 8 and converts it into an electrical signal and transmits it to the controller 10 for processing. The controller 10 receives the electrical signal output by the encoder 9 and determines the operating status according to the set threshold value. When the pressure spring 8 reaches the predetermined threshold value, the controller 10 will trigger the corresponding alarm and shutdown to ensure the safe operation of the overhead crane.

Claims

1. A crane wire rope anti-loosening detection device, characterized in that: The invention comprises a protective shell (1), an anti-slip fixed pulley (2) and a connecting rod (3), wherein the connecting rod (3) is fixedly connected to the top surface of the protective shell (1), the anti-slip fixed pulley (2) is arranged at one end of the protective shell (1), an adjusting nut (4) is arranged in the protective shell (1), an adjusting screw (5) is threadedly connected in the adjusting nut (4), two ends of the adjusting screw (5) are respectively inserted into the end wall of the protective shell (1), a fixing plate (6) is symmetrically arranged at one end of the adjusting screw (5), and the fixing plate (6) is ) is provided with a connecting hole, the anti-slip fixed pulley (2) is clamped between the fixing plates (6), a screw (7) is inserted into the connecting hole and the shaft hole of the anti-slip fixed pulley (2) for rotational connection, a pressure spring (8) is sleeved on the outside of the adjusting screw (5), one end of the pressure spring (8) is fixedly connected to the adjusting nut (4), and the other end is fixedly connected to the inner wall of the protective housing (1) near one end of the anti-slip fixed pulley (2), and an encoder (9) and a controller (10) that are connected to each other are provided on the inner wall of the protective housing (1).

2. The crane wire rope anti-loosening detection device according to claim 1, characterized in that: The long axis of the adjusting screw (5) overlaps with the long axis of the protective housing (1), the fixing plate (6) is parallel to the long axis of the adjusting screw (5), and the screw (7) is perpendicular to the long axis of the adjusting screw (5).

3. The crane wire rope anti-loosening detection device according to claim 1 or 2, characterized in that: A slot gap (11) is provided between the anti-slip fixed pulley (2) and the end of the adjusting screw rod (5).

4. The crane wire rope anti-loosening detection device according to claim 3, characterized in that: The controller (10) is a two-open and two-close 0.20 mA controller.

5. The crane wire rope anti-loosening detection device according to claim 4, characterized in that: The connecting rod (3) is perpendicular to the top surface of the protective shell (1).

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