Tension testing machine for mining anchor cable steel strand
By using a slidably connected protective plate and buffer assembly in the mining anchor cable strand tensile testing machine, the problems of inconvenient replacement of the protective plate and insufficient buffering are solved, thereby improving safety and maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 济南耐而试验机有限公司
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-15
AI Technical Summary
The protective plates of existing mining anchor cable strand tensile testing machines are inconvenient to replace after damage and have insufficient buffering capacity, resulting in safety risks and low equipment maintenance efficiency.
The system employs a sliding connection for the protective plate structure and the buffer assembly. The protective plate can be easily replaced by unlocking it with a lever, and the buffer assembly absorbs impact energy and reduces equipment vibration through the buffer pad and damper.
It improves the ease and safety of replacing the protective plate, enhances the buffering capacity of the testing machine, and reduces the risk of equipment damage and operator safety risks.
Smart Images
Figure CN224247473U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tensile testing machine technology, and in particular to a tensile testing machine for steel strand anchor cables used in mining. Background Technology
[0002] During the production and use of mining anchor cable strands, tensile tests are required to detect their mechanical properties and ensure their safety and reliability in practical applications such as mine support. The mining anchor cable strand tensile testing machine, as a specialized device for such testing, plays a crucial role in mining production. It can simulate the stress conditions of the steel strands in actual operation, providing accurate data support for quality inspection and performance evaluation.
[0003] Existing tensile testing machines for mining anchor cables typically employ a simple frame structure and clamping device to fix the steel strands for tensile testing. For protection, fixed protective fences are usually installed, with protective components directly fixed to the testing machine frame using bolts or similar methods. For cushioning, simple rubber pads are generally installed at the base to absorb the impact force during the test. Its working principle mainly relies on a motor-driven transmission mechanism to move the clamping device, thereby applying tensile force to the steel strands.
[0004] When the protective plate is damaged by impact or wear during long-term use, the disassembly and installation process is cumbersome due to the use of bolts and other fixing methods. It requires the use of professional tools to unscrew each one, which takes a long time and affects the normal use and maintenance efficiency of the testing machine. Moreover, the operators face greater safety risks when the protective components are not replaced in time or are damaged. Therefore, a mining anchor cable steel strand tensile testing machine is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a tensile testing machine for mining anchor cable steel strands, aiming to improve the existing technology for tensile testing of mining anchor cable steel strands, which suffers from problems such as the protective plate blocking splashes to ensure personnel safety and the inconvenience of replacing the protective plate after it is damaged.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A tensile testing machine for steel strands of anchor cables used in mining includes a base, a fixed frame fixedly connected to the side wall of the base, a fixed rod fixedly connected inside the fixed frame, a clamping assembly inside the fixed frame, a protective assembly on the side wall of the fixed frame, and a buffer assembly on the side wall of the base.
[0008] The protective assembly includes a protective plate, a protective frame rotatably connected to the side wall of the fixing frame, a protective plate side wall slidably connected inside the protective frame, a fixing block fixedly connected to the side wall of the protective plate, a sleeve fixedly connected inside the protective frame, a limit rod slidably connected inside the sleeve, a first spring provided inside the sleeve, a locking pin fixedly connected to the side wall of the limit rod, the locking pin side wall slidably connected inside the protective frame and the fixing block, a lever fixedly connected to one side of the limit rod, a vertical groove opened inside the protective frame, and the lever side wall slidably connected inside the vertical groove.
[0009] As a further description of the above technical solution:
[0010] The buffer assembly includes a buffer pad, and a fixing plate is provided on the side wall of the base. The side wall of the buffer pad is fixedly connected to the side wall of the fixing plate.
[0011] As a further description of the above technical solution:
[0012] The clamping assembly includes a fixed clamp, a movable base, and a movable clamp. The side wall of the fixed clamp is fixedly connected inside the fixed frame. The movable base is slidably connected inside the side wall of the fixed rod. The side wall of the movable clamp is fixedly connected to the side wall of the movable base.
[0013] As a further description of the above technical solution:
[0014] A connecting frame is provided at the bottom of the fixing plate, and a connecting rod is fixedly connected to the side wall of the base and the bottom of the fixing plate.
[0015] As a further description of the above technical solution:
[0016] The sidewall of the connecting rod is slidably connected inside the connecting frame, and a damper is fixedly installed between the base and the fixing plate.
[0017] As a further description of the above technical solution:
[0018] A second spring is provided inside the connecting frame, and the sidewall of the second spring is fixedly connected between the connecting rods.
[0019] As a further description of the above technical solution:
[0020] The sidewall of the fixing block is slidably connected inside the protective frame, and the sidewall of the limiting rod is slidably connected inside the protective frame.
[0021] As a further description of the above technical solution:
[0022] One end of the first spring is fixedly connected to the side wall of the limiting rod, and the other end of the first spring is fixedly connected to the inside of the sleeve.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, when the protective plate needs to be replaced, pull the lever to move the limit rod down and compress the first spring. The locking post will disengage from the fixing block, and the protective plate can be taken out for replacement. This solves the problems of the protective plate blocking splashes to ensure personnel safety during the tensile test of mining anchor cable steel strand, as well as the inconvenience of replacing the protective plate after it is damaged. The above technical solution improves the safety of operators during the test and the convenience of replacing the protective plate.
[0025] 2. In this utility model, when an impact occurs during the test, the impact force of the moving seat is transmitted to the fixed plate. The buffer pad absorbs the energy first, and the fixed plate moves down to drive the connecting rod to squeeze the second spring for initial buffering. Subsequently, the damper consumes energy, slows down the moving speed of the fixed plate, and prevents excessive rebound vibration. This solves the problem of equipment component damage and excessive vibration caused by impact during the test of the mining anchor cable steel strand tensile testing machine. The above technical solution improves the testing machine's ability to buffer impacts. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a tensile testing machine for steel strands used in mining anchor cables, as proposed in this utility model.
[0027] Figure 2 This is a schematic diagram of the protective frame structure of a tensile testing machine for steel strand anchor cables used in mining, as proposed in this utility model.
[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0029] Figure 4 This is a schematic diagram of the internal structure of the fixing frame of a tensile testing machine for steel strands of anchor cables used in mining, as proposed in this utility model.
[0030] Figure 5 This is a schematic diagram of the buffer pad structure of a tensile testing machine for steel strand anchor cables used in mining, as proposed in this utility model.
[0031] Legend:
[0032] 1. Base; 2. Fixing frame; 3. Fixing rod; 4. Fixing clamp; 5. Movable seat; 6. Movable clamp; 7. Protective frame; 8. Protective plate; 9. Fixing block; 10. Sleeve; 11. Limiting rod; 12. First spring; 13. Locking post; 14. Pulley; 15. Vertical groove; 16. Fixing plate; 17. Buffer pad; 18. Connecting frame; 19. Connecting rod; 20. Second spring; 21. Damper. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a tensile testing machine for mining anchor cable strands, comprising a base 1, a fixed frame 2 fixedly connected to the side wall of the base 1, a fixed rod 3 fixedly connected inside the fixed frame 2, a clamping assembly inside the fixed frame 2, a protective assembly on the side wall of the fixed frame 2, and a buffer assembly on the side wall of the base 1; the protective assembly includes a protective plate 8, which forms a physical barrier during the test, preventing high-speed debris and fragments from flying when the mining anchor cable strand breaks due to tensile force, thus avoiding direct injury to the operator; a protective frame 7 is rotatably connected to the side wall of the fixed frame 2, providing an installation frame for the protective plate 8; the side wall of the protective plate 8 is slidably connected inside the protective frame 7; a fixed block 9 is fixedly connected to the side wall of the protective plate 8; a sleeve 10 is fixedly connected inside the protective frame 7; a limit rod 11 is slidably connected inside the sleeve 10; the fixed block 9 cooperates with a locking post 13, and when the locking post 13 is inserted into the fixed block 9, it will... The protective plate 8 is fixed inside the protective frame 7. A first spring 12 is installed inside the sleeve 10. A locking post 13 is fixedly connected to the side wall of the limiting rod 11. The side wall of the locking post 13 is slidably connected to the protective frame 7 and the fixing block 9. A lever 14 is fixedly connected to one side of the limiting rod 11. A vertical groove 15 is opened inside the protective frame 7. The side wall of the lever 14 is slidably connected to the vertical groove 15. The side wall of the fixing block 9 is slidably connected to the protective frame 7. The side wall of the limiting rod 11 is slidably connected to the protective frame 7. The first spring 12... One end is fixedly connected to the side wall of the limiting rod 11, and the other end of the first spring 12 is fixedly connected to the inside of the sleeve 10. Under normal conditions, under the elastic force of the first spring 12, the limiting rod 11 pushes the locking pin 13 out and inserts the locking pin 13 into the fixing block 9 to lock the protective plate 8. When the operator needs to replace the protective plate 8, by moving the lever 14, the limiting rod 11 is driven to overcome the elastic force of the first spring 12 and retract, so that the locking pin 13 is disengaged from the fixing block 9, thereby unlocking the fixed state of the protective plate 8.
[0035] Reference Figure 4 and Figure 5The buffer assembly includes a buffer pad 17, and a fixing plate 16 is provided on the side wall of the base 1. The side wall of the buffer pad 17 is fixedly connected to the side wall of the fixing plate 16. The clamping assembly includes a fixing clamp 4, a movable seat 5, and a movable clamp 6. The side wall of the fixing clamp 4 is fixedly connected to the inside of the fixing frame 2. In the tensile test of the mining anchor cable steel strand, the fixing clamp 4 clamps one end of the steel strand, keeping the position of that end of the steel strand fixed and providing a stable reference point for applying tension to the steel strand. The movable seat 5 is internally slidably connected to the side wall of the fixing rod 3, and the side wall of the movable clamp 6 is fixedly connected to the side wall of the movable seat 5. The movable clamp 6 is used to clamp the other end of the mining anchor cable steel strand. Driven by the movable seat 5, tension is applied to the steel strand, simulating the stress situation of the steel strand in actual mine applications, thereby conducting an accurate tensile test to evaluate the mechanical properties of the steel strand. The performance provides data support. A connecting frame 18 is provided at the bottom of the fixed plate 16. A connecting rod 19 is fixedly connected to the side wall of the base 1 and the bottom of the fixed plate 16. The side wall of the connecting rod 19 is slidably connected inside the connecting frame 18. A damper 21 is fixedly installed between the base 1 and the fixed plate 16. When an impact is applied to the fixed plate 16, the internal structure of the damper 21 will generate a damping force, which will convert the impact energy into heat energy and other forms of energy and dissipate it, thereby slowing down the movement speed of the fixed plate 16. Through the action of the damper 21, excessive rebound or violent vibration during the buffering process can be avoided. A second spring 20 is provided inside the connecting frame 18. The side wall of the second spring 20 is fixedly connected between the connecting rods 19. The second spring 20 is used to provide elastic force to assist the buffer pad 17 and the damper 21 in realizing the buffering function.
[0036] Working principle: When the protective plate 8 is damaged and needs to be replaced, pull the lever 14. The lever 14 drives the limiting rod 11 to move downward. The limiting rod 11 then enters the sleeve 10 and applies pressure to the first spring 12 to compress it. At the same time, the locking post 13 moves downward with the limiting rod 11, disengages from the fixing block 9, and releases the fixing block 9. At this time, the protective plate 8 can be taken out and replaced.
[0037] If an impact occurs during the test, the impact force generated by the moving seat 5 will be transmitted to the fixed plate 16. At this time, the buffer pad 17 will absorb part of the impact energy first. At the same time, the fixed plate 16 will move downward due to the impact, causing the connecting rod 19 to slide in the connecting frame 18, squeezing the second spring 20 to perform initial buffering. Then the damper 21 will intervene to consume the remaining energy, slow down the movement speed of the fixed plate 16, and prevent excessive rebound and vibration.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A tensile testing machine for steel strands used in mining anchor cables, comprising a base (1), characterized in that: The base (1) has a fixed frame (2) fixedly connected to its side wall, a fixed rod (3) fixedly connected inside the fixed frame (2), a clamping component inside the fixed frame (2), a protective component on the side wall of the fixed frame (2), and a buffer component on the side wall of the base (1). The protective assembly includes a protective plate (8), a protective frame (7) is rotatably connected to the side wall of the fixing frame (2), the side wall of the protective plate (8) is slidably connected to the inside of the protective frame (7), a fixing block (9) is fixedly connected to the side wall of the protective plate (8), a sleeve (10) is fixedly connected inside the protective frame (7), a limit rod (11) is slidably connected inside the sleeve (10), a first spring (12) is provided inside the sleeve (10), a locking post (13) is fixedly connected to the side wall of the limit rod (11), the side wall of the locking post (13) is slidably connected to the inside of the protective frame (7) and the fixing block (9), a lever (14) is fixedly connected to one side of the limit rod (11), a vertical groove (15) is opened inside the protective frame (7), and the side wall of the lever (14) is slidably connected to the inside of the vertical groove (15).
2. The tensile testing machine for mining anchor cable strands according to claim 1, characterized in that: The buffer assembly includes a buffer pad (17), and a fixing plate (16) is provided on the side wall of the base (1). The side wall of the buffer pad (17) is fixedly connected to the side wall of the fixing plate (16).
3. The tensile testing machine for mining anchor cable strands according to claim 1, characterized in that: The clamping assembly includes a fixed clamp (4), a movable seat (5) and a movable clamp (6). The side wall of the fixed clamp (4) is fixedly connected to the inside of the fixed frame (2). The inside of the movable seat (5) is slidably connected to the side wall of the fixed rod (3). The side wall of the movable clamp (6) is fixedly connected to the side wall of the movable seat (5).
4. A tensile testing machine for mining anchor cable strands according to claim 2, characterized in that: A connecting frame (18) is provided at the bottom of the fixing plate (16), and a connecting rod (19) is fixedly connected to the side wall of the base (1) and the bottom of the fixing plate (16).
5. A tensile testing machine for mining anchor cable strands according to claim 4, characterized in that: The connecting rod (19) is slidably connected to the inside of the connecting frame (18) on its side wall, and a damper (21) is fixedly installed between the base (1) and the fixing plate (16).
6. A tensile testing machine for mining anchor cable strands according to claim 5, characterized in that: The connecting frame (18) is provided with a second spring (20), and the side wall of the second spring (20) is fixedly connected between the connecting rods (19).
7. A tensile testing machine for mining anchor cable strands according to claim 1, characterized in that: The side wall of the fixing block (9) is slidably connected to the inside of the protective frame (7), and the side wall of the limiting rod (11) is slidably connected to the inside of the protective frame (7).
8. A tensile testing machine for mining anchor cable strands according to claim 1, characterized in that: One end of the first spring (12) is fixedly connected to the side wall of the limiting rod (11), and the other end of the first spring (12) is fixedly connected to the inside of the sleeve (10).