Pressing lever for pulley groove tension detection of paying-off tackle

Abstract

The utility model belongs to the technical field of paying-off tackle detection devices, and relates to a pressure lever for tension detection of a pulley groove of a paying-off tackle, which comprises a cylindrical pressure lever body, the outer surface of the pressure lever body is smooth, and the diameter of the pressure lever body is matched with the groove width of the pulley groove. Pulling rope connecting parts are integrally machined at the two ends of the pressing lever body respectively, rope holes penetrating through the front sides and the rear sides of the pulling rope connecting parts are formed in the pulling rope connecting parts, planes are symmetrically machined on the front sides and the rear sides of the pulling rope connecting parts, the upper sides of the pulling rope connecting parts correspond to the working face of the pressing lever body, and the working face makes contact with the detection face of a pulley groove. The lower side of the traction rope connecting part corresponds to the reinforcing face of the pressing lever body, and a reinforcing plate is arranged on the reinforcing face. According to the utility model, the safety and reliability of the pressure lever in pulley groove tension detection can be improved, the pressure lever is convenient to reuse, and the abrasion to the groove surface of the to-be-detected pulley groove in the detection process can be reduced at the same time.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire-laying pulley testing devices, specifically, it relates to a pressure bar for testing the pulley groove tension of a wire-laying pulley. Background Technology

[0002] Currently, wire-laying pulleys are widely used in power line construction. These pulleys are equipped with several rotatable pulleys, each with grooves on its surface for holding the conductor. The tensile strength of these pulley grooves is a crucial indicator of the quality of the wire-laying pulley.

[0003] In the existing technology, the selection and manufacturing of the pressure bar used for tensile testing of pulley grooves are usually quite arbitrary. On the one hand, the pressure bar is prone to bending and deformation, which affects the accuracy of the corresponding test results and the reusability of the pressure bar. On the other hand, the surface of the pressure bar is not smooth, which can easily cause wear on the surface of the pulley groove. In addition, when the two ends of the pressure bar are connected to the traction rope, they are prone to slipping and falling off, which affects the safety of the operation.

[0004] Therefore, there is an urgent need to develop a new pressure bar for testing the pulley groove tension of a wire-laying trolley. Utility Model Content

[0005] The purpose of this invention is to provide a pressure bar for testing the pulley groove tension of a wire-laying trolley, so as to improve the safety and reliability of the pressure bar in the pulley groove tension testing, facilitate reuse, and reduce the wear of the pulley groove surface during the testing process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pressure bar for testing the tension of a pulley groove in a line-laying trolley includes a cylindrical pressure bar body with a smooth outer surface. The diameter of the pressure bar body matches the width of the pulley groove. Traction rope connecting portions are integrally machined at both ends of the pressure bar body. Each traction rope connecting portion has a rope hole penetrating its front and rear sides, and symmetrical planes are machined on its front and rear sides. The upper side of the traction rope connecting portion corresponds to the working surface of the pressure bar body, which contacts the testing surface of the pulley groove. The lower side of the traction rope connecting portion corresponds to the reinforcing surface of the pressure bar body, and a reinforcing plate is provided on the reinforcing surface.

[0008] Preferably, the reinforcing plate is elongated, and the side of the reinforcing plate near the reinforcing surface is provided with an arc groove that matches the reinforcing surface. The reinforcing plate is welded and fixedly connected to the reinforcing surface through the arc groove. This arrangement is convenient to process and helps to ensure the connection strength between the reinforcing plate and the pressure bar body.

[0009] Preferably, both the pressure bar body and the reinforcing plate are made of Q235 ordinary carbon structural steel, which helps to ensure the connection strength between the pressure bar body and the reinforcing plate, and the working surface of the pressure bar body is coated with a smooth wear-resistant layer, which helps to extend the service life of the device.

[0010] Preferably, the smooth wear-resistant layer is made of 0Gr25Ni20 stainless steel, which has good wear and corrosion resistance and can further extend the service life of the device.

[0011] In use, this utility model is used in conjunction with a traction device (existing technology) for testing the tensile strength of pulley grooves. This traction device includes a positioning shaft, a traction rope, a traction machine, and a base. The positioning shaft is rotatably connected to the base. The traction machine can be a traction rope winding machine. First, the pulley of the line-laying trolley is positioned by the positioning shaft passing through its central hole. Then, the working surface of the pressure bar is placed against the pulley groove, with the pressure bar positioned on the side of the pulley away from the traction machine. The rope holes on the traction rope connecting parts at both ends of the pressure bar are connected to a traction rope via rope clips. The other ends of the two traction ropes are connected to the traction machine via rope clips. The traction machine is started, and the traction ropes are tightened. Within a set time, a specific tensile force is applied to the pressure bar through the traction ropes. After one test is completed, the traction ropes are released, and the pulley groove is observed for obvious deformation. If no deformation is found, the pulley is rotated again to test other test points evenly distributed around the circumference of the pulley groove until all test points are completed, thus completing the strength and quality test of the pulley groove.

[0012] The diameter of the pressure bar body and the pulley groove of this utility model are matched, which helps to ensure the consistency of the testing of the same batch of products and the stability of the test results. By making the outer surface of the pressure bar body smooth, the friction between the pressure bar and the pulley groove can be reduced. By setting the traction rope connection part and the rope hole, it is convenient to reliably connect the pressure bar and the traction rope. At the same time, the symmetrically machined planes on the front and rear sides of the traction rope connection part can prevent the traction rope from slipping during the application of tension. By setting the reinforcing plate, the strength of the pressure bar can be improved, ensuring that the pressure bar can be reused.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] This invention can improve the safety and reliability of the pressure bar in the pulley groove tension test, and is easy to reuse. At the same time, it can reduce the wear of the pulley groove surface during the test. Attached Figure Description

[0015] The utility model will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention in the embodiment.

[0017] Figure 2 This is a schematic diagram of the pulley groove of the line-laying trolley in the embodiment.

[0018] In the diagram: 1-pressure bar body, 2-pulley groove, 3-traction rope connection, 4-rope hole, 5-plane, 6-reinforcing plate. Detailed Implementation

[0019] The utility model will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the utility model and is not intended to limit it. Any modifications, equivalent substitutions, or improvements made by those skilled in the art based on the embodiments of the utility model without inventive effort to obtain all other embodiments should be included within the protection scope of the utility model.

[0020] Example

[0021] like Figures 1-2 As shown, this utility model provides a pressure bar for testing the pulley groove tension of a line-laying trolley, including a cylindrical pressure bar body 1 with a smooth outer surface. The diameter of the pressure bar body matches the groove width of the pulley groove 2. Both ends of the pressure bar body are integrally machined with traction rope connecting parts 3. The traction rope connecting parts are provided with rope holes 4 penetrating the front and rear sides of the traction rope connecting parts. The front and rear sides of the traction rope connecting parts are symmetrically machined with planes 5. The upper side of the traction rope connecting part corresponds to the working surface of the pressure bar body, and the working surface contacts the testing surface of the pulley groove. The lower side of the traction rope connecting part corresponds to the reinforcing surface of the pressure bar body, and a reinforcing plate 6 is provided on the reinforcing surface.

[0022] The reinforcing plate is elongated and has an arc groove on one side of the reinforcing surface that matches the reinforcing surface. The reinforcing plate is welded and fixed to the reinforcing surface through the arc groove. This design is easy to process and helps to ensure the connection strength between the reinforcing plate and the pressure bar body.

[0023] Continuing with the above embodiments, both the pressure bar body and the reinforcing plate are made of Q235 ordinary carbon structural steel, which helps to ensure the connection strength between the pressure bar body and the reinforcing plate. In addition, the working surface of the pressure bar body is coated with a smooth wear-resistant layer of 0Gr25Ni20 stainless steel (not shown in the figure), which helps to extend the service life of the device.

[0024] In use, this utility model is used in conjunction with a traction device (existing technology) for testing the tensile strength of pulley grooves. This traction device includes a positioning shaft, a traction rope, a traction machine, and a base. The positioning shaft is rotatably connected to the base. The traction machine can be a traction rope winding machine. First, the pulley of the line-laying trolley is positioned by the positioning shaft passing through its central hole. Then, the working surface of the pressure bar is placed against the pulley groove, with the pressure bar positioned on the side of the pulley away from the traction machine. The rope holes on the traction rope connecting parts at both ends of the pressure bar are connected to a traction rope via rope clips. The other ends of the two traction ropes are connected to the traction machine via rope clips. The traction machine is started, and the traction ropes are tightened. Within a set time, a specific tensile force is applied to the pressure bar through the traction ropes. After one test is completed, the traction ropes are released, and the pulley groove is observed for obvious deformation. If no deformation is found, the pulley is rotated again to test other test points evenly distributed around the circumference of the pulley groove until all test points are completed, thus completing the strength and quality test of the pulley groove.

[0025] The diameter of the pressure bar body and the pulley groove of this utility model are matched, which helps to ensure the consistency of the testing of the same batch of products and the stability of the test results. By making the outer surface of the pressure bar body smooth, the friction between the pressure bar and the pulley groove can be reduced. By setting the traction rope connection part and the rope hole, it is convenient to reliably connect the pressure bar and the traction rope. At the same time, the symmetrically machined planes on the front and rear sides of the traction rope connection part can prevent the traction rope from slipping during the application of tension. By setting the reinforcing plate, the strength of the pressure bar can be improved, ensuring that the pressure bar can be reused.

[0026] The above description is merely a preferred embodiment of the present invention and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A pressure bar for detecting the tension in the pulley groove of a wire-laying trolley, comprising a cylindrical pressure bar body, wherein the outer surface of the pressure bar body is smoothly formed, characterized in that: The diameter of the pressure bar body is matched with the groove width of the pulley groove, and traction rope connecting parts are integrally machined at both ends of the pressure bar body. The traction rope connecting parts are provided with rope holes that pass through the front and rear sides of the traction rope connecting parts, and flat surfaces are symmetrically machined on the front and rear sides of the traction rope connecting parts. The upper side of the traction rope connecting parts corresponds to the working surface of the pressure bar body, and the working surface is in contact with the detection surface of the pulley groove. The lower side of the traction rope connecting parts corresponds to the reinforcing surface of the pressure bar body, and a reinforcing plate is provided on the reinforcing surface.

2. The pressure bar for detecting the pulley groove tension of a wire-laying trolley according to claim 1, characterized in that: The reinforcing plate is elongated and has an arc groove on the side of the reinforcing surface that matches the reinforcing surface. The reinforcing plate is welded and fixed to the reinforcing surface through the arc groove.

3. The pressure bar for detecting the pulley groove tension of a wire-laying trolley according to claim 2, characterized in that: Both the pressure bar body and the reinforcing plate are made of Q235 ordinary carbon structural steel, and the working surface of the pressure bar body is coated with a smooth wear-resistant layer.

4. The pressure bar for detecting the pulley groove tension of a wire-laying trolley according to claim 3, characterized in that: The material of the smooth wear-resistant layer is 0Gr25Ni20 stainless steel.

Images