A steel wire rope traction force test fixture
By designing a multi-directional adjustable wire rope traction force testing fixture, the problems of narrow applicability and poor accuracy of traditional fixtures are solved, achieving efficient and accurate wire rope testing and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING COAL DESIGN & RES INST CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional wire rope traction force testing fixtures have a narrow range of applications, poor testing accuracy, low installation efficiency, and are prone to damaging the wire rope, making them unable to meet the needs of diverse layouts and complex forces in coal mine inclined roadways.
Design a multi-directional adjustable clamp including a base, an adjustable clamp, and a limiting rod. The adjustable clamp uses a combination of a transverse slide rail and a longitudinal slide rail. Combined with the anti-slip texture of the adjustable clamp and the telescopic structure of the limiting rod, a multi-directional adjustable wire rope fixing is achieved.
It improves the installation efficiency of wire rope testing, ensures uniform stress distribution, reduces slippage, enhances the accuracy and applicability of test data, and extends the service life of wire ropes.
Smart Images
Figure CN224471395U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of testing fixture technology, and specifically relates to a steel wire rope traction force testing fixture. Background Technology
[0002] In the field of coal mine safety production, especially in the inclined shaft hoisting and transportation operations of underground coal mines, wire ropes, as key components connecting hoisting equipment with mine cars, skips, and other transportation carriers, directly affect the safety and stability of the entire transportation system. Wire rope traction force testing fixtures, as core tools for testing the load-bearing capacity and performance indicators of wire ropes, undertake the important task of simulating the stress state of wire ropes under actual working conditions and accurately measuring key parameters such as traction force and tensile strength. In inclined shaft runaway prevention facilities, wire ropes are used to pull the drive mechanism of the barrier, ensuring that the barrier can quickly activate and play a blocking role in emergencies. Therefore, accurate testing of wire rope performance is particularly crucial. Traditional wire rope traction force testing fixtures typically adopt a fixed structure with a fixed clamp position, making it difficult to adapt to wire ropes with different installation positions and angles. When faced with the diverse arrangement of wire ropes on the inclined shaft barrier beam, this fixed structure often requires a significant amount of time for adjustment or reinstallation, resulting in low testing efficiency.
[0003] From the perspective of clamping methods, traditional clamps mostly employ simple rigid clamping, resulting in limited friction between the clamp and the wire rope. This makes the wire rope prone to slippage during testing. Especially during high-strength traction tests, slippage distorts the test data, failing to accurately reflect the wire rope's true performance. Furthermore, rigid clamping can damage the wire rope surface, affecting its lifespan and subsequent safety. Regarding limiting functions, traditional clamps have relatively simple limiting structures, typically only limiting the wire rope in one direction. This is insufficient to address multi-directional deviations that may occur during testing. In inclined shaft anti-runaway scenarios, the wire rope experiences complex forces, including longitudinal traction, lateral impact, and torque. The single limiting structure of traditional clamps cannot effectively constrain wire rope deviation, leading to inaccurate test results and failing to provide reliable data for the selection and maintenance of barrier wire ropes. Utility Model Content
[0004] In view of this, the present invention provides a wire rope traction force testing fixture, which solves the problems of poor testing accuracy and narrow applicable range of traditional wire rope traction force testing fixtures, and improves the overall testing efficiency.
[0005] This utility model is implemented as follows:
[0006] This utility model provides a wire rope traction force testing fixture, which includes a base, an adjustable clamp, and a limiting rod. The base is used to fix it on a stop beam, the adjustable clamp is disposed on the base, and the limiting rod is disposed on one side of the adjustable clamp. The base is provided with a transverse slide rail and a longitudinal slide rail, and the bottom of the adjustable clamp is provided with a slider adapted to the transverse slide rail and the longitudinal slide rail. The adjustable clamp is slidably connected to the transverse slide rail and the longitudinal slide rail of the base through the slider.
[0007] The technical advantages of the wire rope traction force testing fixture provided by this utility model are as follows: The combination structure of the base, adjustable clamp, and limiting rod clarifies the basic components of the fixture and the positional relationship between the parts, laying the foundation for multi-directional adjustable wire rope fixing. This results in a simple and reasonable fixture structure, facilitating installation and maintenance. The cooperation between the transverse and longitudinal slide rails on the base and the slider at the bottom of the adjustable clamp enables sliding adjustment of the adjustable clamp in two mutually perpendicular directions. This allows for precise adaptation to wire ropes in different positions. Compared to traditional fixing methods, the installation efficiency of the wire rope is significantly improved, and the force on the wire rope is more even during testing, thus improving testing accuracy.
[0008] Based on the above technical solution, the wire rope traction force testing fixture of this utility model can be further improved as follows:
[0009] The adjustable clamp includes an upper clamp and a lower clamp, which are detachably connected by multiple bolts. A clamping space for clamping the wire rope is formed between the upper and lower clamps. The sliding direction of the adjustable clamp is parallel to the length and width directions of the stop beam.
[0010] The upper clamp has a plate-like structure with a flat top and a concave bottom. The concave surface matches the outer contour of the wire rope to increase the contact area. The lower clamp also has a plate-like structure with a flat bottom and a concave top, with its concave top surface similarly matching the outer contour of the wire rope. Anti-slip textures, consisting of staggered raised ridges, are provided on the opposite concave surfaces of both the upper and lower clamps. Multiple bolt holes are correspondingly located at the edges of both clamps. Bolts passing through these holes and engaging with nuts allow for a detachable connection between the upper and lower clamps, thus creating a stable clamping space for the wire rope.
[0011] Furthermore, the clamping surfaces of the upper and lower clamping bodies are provided with anti-slip textures.
[0012] Anti-slip textures can be made of grid-like raised structures, hemispherical raised dots arranged in a ring array, or wavy raised ridges, etc.
[0013] Furthermore, the limiting rod is a telescopic structure, with one end hinged to the base and the other end provided with a limiting block for abutting against the side of the wire rope.
[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the telescopic structure and hinged design of the limit rod can flexibly adjust the limit position to adapt to wire ropes of different sizes and positions, provide reliable limit support from the side, prevent the wire rope from shifting during the test, and ensure the stability of the test.
[0015] Furthermore, the limiting rod includes an inner rod and an outer rod, the inner rod can slide telescopically within the outer rod, and the outer rod is provided with a locking element for fixing the position of the inner rod.
[0016] The locking component is a bolt and nut assembly. The outer rod sidewall has a threaded hole. The bolt passes through the threaded hole and extends into the outer rod. When the inner rod slides to the desired position inside the outer rod, the bolt is tightened so that the end of the bolt abuts against the inner rod sidewall, thereby fixing the position of the inner rod. Alternatively, the locking component adopts an elastic locking pin structure. The outer rod sidewall is provided with multiple slots spaced axially, and the inner rod has corresponding locking holes. When the inner rod slides to the appropriate position, the elastic locking pin is inserted into the locking hole and locked into the slot to fix the position of the inner rod.
[0017] Furthermore, the base is provided with multiple mounting holes, and the base is fixed to the stop beam by bolts passing through the mounting holes.
[0018] The advantages of adopting the above-mentioned improvement scheme are as follows: the design of multiple mounting holes on the base makes it easy to firmly fix the base to the stop beam with bolts, the installation method is simple and quick, and the appropriate mounting holes can be selected according to the actual situation of the stop beam, improving the flexibility and adaptability of the installation.
[0019] Furthermore, the adjustable chuck is provided with multiple adjustment holes, which are distributed along the transverse and longitudinal directions of the adjustable chuck. The position of the adjustable chuck on the base is fixed by installing positioning pins in the adjustment holes.
[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the multiple adjustment holes and positioning pins on the adjustable chuck can be used to achieve precise fixation of the adjustable chuck at different positions on the base, which further improves the adaptability of the clamp to wire ropes in different positions and enhances the versatility of the clamp.
[0021] Furthermore, there are two limiting rods, which are symmetrically arranged on the left and right sides of the adjustable clamp.
[0022] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the two symmetrically arranged limiting rods provide limiting support from both sides of the wire rope. Compared with a single limiting rod, the limiting effect on the wire rope is better, and it can more effectively prevent the wire rope from deviating. The adjustable clamp moves along the horizontal and vertical slide rails of the base. The limiting rods in the left and right directions can better limit the wire rope in the horizontal direction, prevent the wire rope from deviating to the left or right during the test, and ensure the stability and accuracy of the test.
[0023] Furthermore, the base is in the shape of a rectangular plate, and the transverse slide rail and the longitudinal slide rail are arranged perpendicularly to each other on the upper surface of the base.
[0024] Furthermore, the upper clamp has downwardly extending side wings on both sides, and the side wings have bolt holes for connection with the lower clamp.
[0025] The side wings are plate-like structures extending vertically downwards from both sides of the upper clamping body. Their length direction is consistent with the length direction of the upper clamping body, and their width direction is the same as the thickness direction of the upper clamping body. Multiple evenly distributed bolt holes are provided at the lower end of the side wings, and corresponding bolt holes of the same specifications are provided on both sides of the lower clamping body. Bolts pass through the bolt holes in the side wings and the lower clamping body and engage with nuts to securely connect the upper and lower clamping bodies. Simultaneously, the side wings have reinforcing ribs in the thickness direction to enhance their strength and stability, preventing deformation during the clamping of the wire rope.
[0026] Compared with the prior art, the beneficial effects of the wire rope traction force testing fixture provided by this utility model are:
[0027] This utility model of a multi-directional adjustable wire rope fixing clamp exhibits significant advantages in several aspects. Regarding installation efficiency, the design of the transverse and longitudinal slide rails on the base, in conjunction with the slider at the bottom of the adjustable clamp, allows the adjustable clamp to slide freely in two mutually perpendicular directions. This structural innovation completely changes the traditional clamp fixing installation mode. When dealing with wire ropes at different positions and angles, operators do not need to perform complex adjustments or replacements; they can simply slide the adjustable clamp along the slide rail to quickly adapt the clamp to the wire rope, greatly shortening test preparation time and improving overall test efficiency.
[0028] In terms of testing accuracy, the multi-directional adjustable structure ensures that the wire rope is in a more ideal stress state during testing. Traditional clamps, due to their inability to precisely adjust the wire rope's position, easily lead to uneven stress on the wire rope, affecting the accuracy of test results. This invention, however, through the flexible adjustment of the adjustable clamps, ensures uniform stress on the wire rope during testing, reducing testing errors caused by uneven stress. Simultaneously, the anti-slip texture on the clamping surfaces of the upper and lower clamps effectively increases the friction between the wire rope and the clamp, preventing slippage during clamping and further ensuring the reliability of the test data.
[0029] In terms of applicability, this utility model is highly versatile. The upper and lower clamping bodies are detachably connected by bolts, forming an adjustable clamping space that can stably clamp wire ropes of different thicknesses. Whether it is a thinner wire rope used for light-duty bollards or a thicker wire rope used for heavy-duty transport equipment, this clamp can be adapted to it. In addition, the multiple adjustment holes and positioning pins on the adjustable clamps, as well as the telescopic and hinged design of the limit rod, enable the clamp to adapt to wire ropes of different sizes and positions, meeting the testing needs of diverse wire rope arrangements in coal mine inclined roadways. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is an example diagram of a wire rope traction force testing fixture without its side wings installed.
[0032] Figure 2 Example diagram of side wing mounting for a wire rope traction force testing fixture
[0033] The attached diagram lists the components represented by each number as follows:
[0034] 10. Base; 11. Horizontal slide rail; 12. Vertical slide rail; 20. Adjustable clamp; 21. Upper clamp; 22. Lower clamp; 30. Limiting rod. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0036] like Figure 1 , Figure 2 The image shows a first embodiment of a wire rope traction force testing fixture provided by this utility model. In this embodiment, it includes a base 10, an adjustable clamp 20, and a limiting rod 30. The base 10 is used to fix it on the stop beam, the adjustable clamp 20 is disposed on the base 10, and the limiting rod 30 is disposed on one side of the adjustable clamp 20. The base 10 is provided with a transverse slide rail 11 and a longitudinal slide rail 12. The bottom of the adjustable clamp 20 is provided with a slider that is adapted to the transverse slide rail 11 and the longitudinal slide rail 12. The adjustable clamp 20 is slidably connected to the transverse slide rail 11 and the longitudinal slide rail 12 of the base 10 through the slider.
[0037] First, install the base on the stop beam using a suitable fixing method; then, place the wire rope in the predetermined position of the adjustable clamp; finally, adjust the adjustable clamp according to the position requirements of the wire rope, and use the limit rod to limit and fix the side of the wire rope.
[0038] Install the adjustable chuck on the horizontal and vertical slide rails of the base via a slider; place the wire rope inside the adjustable chuck; adjust the position of the adjustable chuck by sliding it along the horizontal and vertical slide rails according to the actual position of the wire rope until it reaches the appropriate position.
[0039] In the above technical solution, the adjustable clamp 20 includes an upper clamping body 21 and a lower clamping body 22, which are detachably connected by multiple bolts. A clamping space for clamping the wire rope is formed between the upper clamping body 21 and the lower clamping body 22. The sliding direction of the adjustable clamp 20 is parallel to the length and width directions of the stop beam.
[0040] Furthermore, in the above technical solution, anti-slip textures are provided on the clamping surfaces of the upper clamp 21 and the lower clamp 22.
[0041] Furthermore, in the above technical solution, the limiting rod 30 is a telescopic structure. One end of the limiting rod 30 is hinged to the base 10, and the other end is provided with a limiting block for abutting against the side of the wire rope.
[0042] Depending on the position of the wire rope, rotate the hinged limit rod to the appropriate angle; adjust the extension length of the limit rod so that the limit block abuts against the side of the wire rope; if adjustment is needed, repeat the above operation.
[0043] Furthermore, in the above technical solution, the limiting rod 30 includes an inner rod and an outer rod. The inner rod can slide telescopically within the outer rod, and the outer rod is provided with a locking element for fixing the position of the inner rod.
[0044] Furthermore, in the above technical solution, the base 10 is provided with multiple mounting holes, and the base 10 is fixed to the stop beam by bolts passing through the mounting holes.
[0045] Furthermore, in the above technical solution, the adjustable chuck 20 is provided with multiple adjustment holes, which are distributed along the transverse and longitudinal directions of the adjustable chuck 20. The position of the adjustable chuck 20 on the base 10 is fixed by installing positioning pins in the adjustment holes.
[0046] Furthermore, in the above technical solution, there are two limiting rods 30, which are symmetrically arranged on both sides of the adjustable clamp 20.
[0047] Furthermore, in the above technical solution, the base 10 is in the shape of a rectangular plate, and the transverse slide rail 11 and the longitudinal slide rail 12 are arranged perpendicularly to each other on the upper surface of the base 10.
[0048] Furthermore, in the above technical solution, the upper clamp 21 has downwardly extending side wings on both sides, and the side wings have bolt holes for connection with the lower clamp 22.
[0049] Place the upper clamp on top of the lower clamp, aligning the bolt holes on the side wings with the bolt holes on the lower clamp; pass the bolts through the bolt holes and tighten the nuts to securely connect the upper and lower clamps via the side wings.
[0050] Specifically, the principle of this utility model is as follows:
[0051] The technical principle of this utility model is based on in-depth analysis and structural innovation of the testing requirements for wire ropes. Regarding the multi-directional adjustable structure, the design of the transverse and longitudinal slide rails on the base draws inspiration from the sliding guide principle in mechanical engineering. The transverse and longitudinal slide rails are perpendicular to each other, providing two degrees of freedom for the adjustable chuck's sliding space. The slider at the bottom of the adjustable chuck precisely engages with the slide rails; by sliding the slider on the slide rails, the position of the adjustable chuck in the plane is adjusted. This design is similar to the sliding mechanism of a machine tool table, ensuring that the adjustable chuck moves smoothly and accurately during adjustment, thereby achieving rapid adaptation to wire ropes in different positions.
[0052] In terms of clamping and fixing principles, the upper and lower clamping bodies are connected by bolts to form a clamping space, based on a combination of mechanical fastening and friction. When the bolts are tightened, the upper and lower clamping bodies move closer together, generating a clamping force on the wire rope. Simultaneously, the anti-slip texture on the clamping surface increases the friction between the clamping bodies and the wire rope. Different structural designs of the anti-slip texture, such as a grid pattern and hemispherical protrusions, further enhance friction by increasing the contact area and changing the surface roughness. According to the principles of tribology, the magnitude of friction is related to the normal force and the coefficient of friction. The design of the anti-slip texture effectively increases the coefficient of friction without increasing the normal force excessively, thus achieving a firm clamping of the wire rope.
[0053] The telescopic and hinged design of the limit rod utilizes principles of mechanical kinematics and mechanics. The hinged structure allows the limit rod to rotate around the hinge point, enabling adjustments at different angles to accommodate wire ropes in various positions. The telescopic structure adjusts the length of the limit rod by sliding the inner rod within the outer rod, ensuring the limit block accurately abuts against the side of the wire rope. When the limit rod applies a limiting force to the wire rope, according to the principle of force balance, the limiting force balances the potential offset force that may occur in the wire rope during testing, thus preventing the wire rope from shifting. The locking mechanism ensures the limit rod remains stable after adjustment. Whether it's the bolt and nut assembly fixing the inner rod through the friction generated by tightening the bolts, or the elastic pin structure fixing the inner rod through the engagement of the pin and slot, both methods rely on mechanical fixing principles to lock the limit rod's position.
[0054] In terms of overall structural design, this utility model fully considers compatibility with inclined shaft retaining beams. The sliding direction of the adjustable clamp is parallel to the length and width directions of the retaining beam, a design that conforms to the structural characteristics of the inclined shaft retaining beam and the arrangement of the wire rope. Multiple mounting holes on the base facilitate the selection of appropriate installation positions and methods based on the actual conditions of the retaining beam, ensuring the clamp can be securely installed on it. The rectangular plate base and mutually perpendicular slide rails provide a stable support platform for the adjustable clamp, and its structural design follows the principles of mechanical structure mechanics, ensuring the stability and reliability of the clamp during testing. The side wings and bolt holes on both sides of the upper clamp increase the connection strength between the upper and lower clamps. The upper and lower clamps are connected as a whole by bolts, allowing them to share the tension when clamping the wire rope, ensuring the clamp will not loosen. This principle is based on mechanical connection and strength theory.
Claims
1. A wire rope traction force testing fixture, characterized in that, It includes a base, an adjustable clamp, and a limiting rod; the base is used to fix it on the stop beam, the adjustable clamp is disposed on the base, and the limiting rod is disposed on one side of the adjustable clamp; the base is provided with a transverse slide rail and a longitudinal slide rail, and the bottom of the adjustable clamp is provided with a slider adapted to the transverse slide rail and the longitudinal slide rail, and the adjustable clamp is slidably connected to the transverse slide rail and the longitudinal slide rail of the base through the slider.
2. The wire rope traction force testing fixture according to claim 1, characterized in that, The adjustable clamp includes an upper clamp and a lower clamp, which are detachably connected by multiple bolts. A clamping space for clamping the wire rope is formed between the upper and lower clamps. The sliding direction of the adjustable clamp is parallel to the length and width directions of the stop beam.
3. The wire rope traction force testing fixture according to claim 2, characterized in that, The clamping surfaces of the upper and lower clamping bodies are provided with anti-slip textures.
4. The wire rope traction force testing fixture according to claim 3, characterized in that, The limiting rod is a telescopic structure. One end of the limiting rod is hinged to the base, and the other end is provided with a limiting block for abutting against the side of the wire rope.
5. A wire rope traction force testing fixture according to claim 4, characterized in that, The limiting rod includes an inner rod and an outer rod. The inner rod can slide and extend within the outer rod, and the outer rod is provided with a locking device for fixing the position of the inner rod.
6. A wire rope traction force testing fixture according to claim 5, characterized in that, The base is provided with multiple mounting holes, and the base is fixed to the stop beam by bolts passing through the mounting holes.
7. A wire rope traction force testing fixture according to claim 6, characterized in that, The adjustable chuck is provided with multiple adjustment holes, which are distributed along the transverse and longitudinal directions of the adjustable chuck. The position of the adjustable chuck on the base is fixed by installing positioning pins in the adjustment holes.
8. A wire rope traction force testing fixture according to claim 7, characterized in that, The number of limiting rods is two, and the two limiting rods are symmetrically arranged on the left and right sides of the adjustable clamp.
9. A wire rope traction force testing fixture according to claim 8, characterized in that, The base is rectangular in shape, and the horizontal and vertical slide rails are arranged perpendicularly to each other on the upper surface of the base.
10. A wire rope traction force testing fixture according to claim 9, characterized in that, The upper clamp has downward-extending side wings on its left and right sides, and the side wings have bolt holes for connection with the lower clamp.