Tension testing machine for mining anchor cable steel strand

Abstract

The utility model discloses a mining anchor cable steel strand tension testing machine which comprises a machine pedestal and a tension testing frame fixedly installed at the top of the machine pedestal, and further comprises a fixed clamping module and a movable clamping module, the fixed clamping module is installed at the bottom end in the tension testing frame, a moving mechanism is installed on the tension testing frame, and the movable clamping module is installed on the machine pedestal. A plurality of clamping blocks are arranged in the circumferential direction of the mounting groove at equal intervals, the diameter of the mounting groove is gradually reduced from top to bottom, the movable clamping module is installed on the moving mechanism and located over the fixed clamping module, and the movable clamping module and the fixed clamping module are the same in structure. The outer side faces of the clamping blocks are inclined faces tightly attached to the inner wall of the mounting groove, so that when the clamping blocks move towards the interior of the mounting groove, the distance between the clamping blocks is gradually reduced, the mining anchor cable steel strand is stably clamped, the clamping contact face of the clamping blocks and the mining anchor cable steel strand is increased, the steel strand is prevented from being damaged by clamping, and the clamping stability can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tension testing machines, in particular to a tension testing machine for mining anchor cable steel strands. Background Art

[0002] Steel strand is a steel product composed of multiple steel wires twisted together. The surface of carbon steel can be added with galvanized layer, zinc-aluminum alloy layer, aluminum clad layer, copper plating layer and epoxy resin coating as needed. The diameter of mining steel strand is generally 21.8mm, and the tensile strength is relatively high, >1500MPa. If cracks appear in mining anchor steel strand during use or break after being subjected to large tensile force, it will cause huge accidents and losses. Therefore, it is necessary to carry out tensile test on mining anchor steel strand to ensure that the strength of the steel strand is reasonable and safe.

[0003] However, in the prior art, it is always difficult for conventional tensile machine clamps to meet the requirements during the test. During the stretching process, the steel strands are easily clamped and affected the accuracy of the tensile test results, or the clamps are not tight enough and slip, causing the test to be interrupted. Therefore, it is necessary to design a mining anchor steel strand tensile testing machine to improve the above problems. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a mining anchor cable steel strand tensile testing machine, which aims to solve the problems in the prior art that the steel strand is easily clamped and affects the accuracy of the tensile test results, or the steel strand slips due to insufficient clamping, resulting in test interruption.

[0006] 2. Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A mining anchor cable steel strand tensile testing machine, comprising a machine base and a tensile test frame fixedly mounted on the top of the machine base, and also comprising a fixed clamping module and a mobile clamping module, wherein the fixed clamping module is mounted on the bottom end of the tensile test frame, a mobile mechanism is mounted on the tensile test frame, the mobile clamping module is mounted on the mobile mechanism and is located directly above the fixed clamping module, and the mobile clamping module has the same structure as the fixed clamping module;

[0009] The fixed clamping module includes a seat body, a clamping assembly and an adjustment assembly. The seat body is provided with an installation groove. The clamping assembly is connected to the inside of the installation groove and is used to clamp the mining anchor steel strand. The adjustment assembly is connected to the outside of the seat body and is used to adjust the clamping or loosening state of the clamping assembly.

[0010] Preferably, the clamping assembly includes a clamping block arranged inside the mounting groove, and a plurality of the clamping blocks are arranged at equal intervals along the circumferential direction of the mounting groove. The top end of the clamping block extends to the outside of the mounting groove. The mounting groove is a truncated cone structure, and the diameter of the mounting groove gradually decreases from top to bottom. The outer side surface of the clamping block is an inclined surface that is tightly attached to the inner wall of the mounting groove.

[0011] Preferably, a first sliding groove is provided on the inner wall of the installation groove corresponding to the clamping block, a first sliding block is fixedly connected to the inclined surface of the clamping block, and the first sliding block is slidably connected in the first sliding groove.

[0012] Preferably, the clamping assembly also includes a linkage plate arranged on the top of the clamping block, the linkage plate is an L-shaped structure, a second slide groove is opened on the top of the clamping block, a second slider is fixedly connected to the top end of the linkage plate, and the second slider is slidably connected in the second slide groove.

[0013] Preferably, the adjustment assembly includes a rotating sleeve rotatably connected to the outside of the seat body, the rotating sleeve has an inner thread groove on its inner wall, the linkage plate has an outer thread groove on its outer wall, the bottom end of the linkage plate is placed in the rotating sleeve, and the two are threadedly connected via the inner thread groove and the outer thread groove.

[0014] Preferably, the outer side of the rotating sleeve is fixedly connected to a rotating ring via a fixing rod, and an anti-slip sleeve is sleeved on the outer wall of the rotating ring.

[0015] Preferably, a third sliding block is fixedly connected to the inner side wall of the linkage plate, a third sliding groove is provided on the outer wall of the base body corresponding to the linkage plate, and the third sliding block is slidably connected in the third sliding groove.

[0016] Preferably, a plurality of anti-slip grooves are evenly arranged on the inner side wall of the clamping block along the length direction.

[0017] Preferably, the moving mechanism includes a screw rod rotatably connected to both sides of the tensile test frame, a moving plate is connected between the two screw rods, the end of the moving plate is fixedly connected to a screw sleeve threadedly connected to the screw rod, the top of the seat body of the moving clamping module is fixedly connected to a tensile sensor, the tensile sensor is fixedly connected to the bottom of the moving plate, the seat body of the fixed clamping module is fixedly connected to the bottom end of the tensile test frame, and the moving mechanism also includes a driving assembly.

[0018] Preferably, the driving assembly includes a driving motor, which is fixedly connected to the bottom of the tensile test frame through a motor frame, and the output end of the driving motor is fixedly connected to a driving pulley, and the bottom end of the screw rod extends to the outside of the tensile test frame and is fixedly connected to a driven pulley, and a transmission belt is sleeved between the two driven pulleys and the driving pulley.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) The utility model provides a fixed clamping module and a movable clamping module, and by rotating the rotating sleeve, the linkage plate is threadedly engaged with the rotating sleeve, thereby driving the longitudinal movement of the linkage plate and driving the clamping block to move into the installation groove, which is convenient for closing and opening the clamping block, easy to operate, highly convenient to use, and improves the test efficiency.

[0022] (2) The utility model arranges a plurality of clamping blocks at equal intervals along the circumferential direction of the installation groove, and the diameter of the installation groove gradually decreases from top to bottom. The outer side surface of the clamping block is an inclined surface that is closely attached to the inner wall of the installation groove, so that when the clamping block moves into the interior of the installation groove, the distance between the clamping blocks gradually decreases, thereby clamping the steel strands of the mining anchor cable firmly and increasing the clamping contact surface between the clamping block and the steel strands of the mining anchor cable, thereby avoiding clamping of the steel strands and improving the stability of the clamping, thereby ensuring better implementation of the tensile test.

[0023] (3) The utility model has a plurality of anti-skid grooves evenly arranged along the length direction on the inner wall of the clamp block, which plays an anti-skid role, so that the clamp block clamps the steel strand of the mining anchor cable more firmly and prevents slipping and loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the mining anchor cable steel strand tensile testing machine;

[0025] Figure 2 It is a three-dimensional enlarged structural schematic diagram of the moving mechanism;

[0026] Figure 3 It is a three-dimensional enlarged structural diagram of the fixed clamping module;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixed clamping module.

[0028] In the figure: 1, machine base; 2, tensile test frame; 3, fixed clamping module; 301, base body; 3011, mounting groove; 3012, first slide groove; 3013, third slide groove; 302, clamping block; 3021, anti-slip groove; 3022, first slider; 3023, second slide groove; 303, linkage plate; 3031, second slider; 3032, third slider; 304, rotating sleeve; 305, rotating ring; 4, mobile clamping module; 5, mobile mechanism; 501, screw rod; 502, mobile plate; 503, driven pulley; 504, driving motor; 505, driving pulley; 506, transmission belt. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] Example:

[0031] See also Figure 1-Figure 4 The present embodiment provides a tensile testing machine for a mining anchor cable steel strand, comprising a machine base 1 and a tensile testing frame 2 fixedly mounted on the top of the machine base 1, and also comprising a fixed clamping module 3 and a mobile clamping module 4, wherein the fixed clamping module 3 is mounted at the bottom end of the tensile testing frame 2, a mobile mechanism 5 is mounted on the tensile testing frame 2, the mobile clamping module 4 is mounted on the mobile mechanism 5 and is located directly above the fixed clamping module 3, a tensile sensor is mounted between the mobile clamping module 4 and the mobile mechanism 5, the two ends of the mining anchor cable steel strand are clamped and fixed by the mobile clamping module 4 and the fixed clamping module 3 respectively, the mobile clamping module 4 is driven to move longitudinally and linearly by the mobile mechanism 5, the mobile clamping module 4 is moved away from the fixed clamping module 3, the tensile value of the mining anchor cable steel strand is recorded by the tensile sensor, and the tensile value of the mining anchor cable steel strand can be tested.

[0032] As an implementation method of this embodiment, Figure 3 As shown, the fixed clamping module 3 includes a seat body 301, a clamping assembly and an adjusting assembly. An installation groove 3011 is opened inside the seat body 301. The clamping assembly is connected to the inside of the installation groove 3011 and is used to clamp the mining anchor cable steel strand. The adjusting assembly is connected to the outside of the seat body 301 and is used to adjust the clamping or loosening state of the clamping assembly. The mobile clamping module 4 has the same structure as the fixed clamping module 3. One end of the mining anchor cable steel strand is placed in the installation groove 3011. By operating the adjusting assembly, the clamping or loosening action of the clamping assembly can be driven, thereby clamping the mining anchor cable steel strand. The structure is simple and the operation is convenient.

[0033] As an implementation method of this embodiment, Figure 3 and Figure 4As shown, the clamping assembly includes a clamping block 302 arranged inside the mounting groove 3011, and three clamping blocks 302 are arranged at equal intervals along the circumferential direction of the mounting groove 3011. In the present embodiment, the number of the clamping blocks 302 is three. In other embodiments, the number of the clamping blocks 302 may also be four or five, and the design is performed according to actual needs. The top of the clamping block 302 extends to the outside of the mounting groove 3011, and the mounting groove 3011 is a truncated cone structure. The diameter of the mounting groove 3011 gradually decreases from top to bottom, and the outer side surface of the clamping block 302 is an inclined surface that is tightly attached to the inner wall of the mounting groove 3011, so that when the clamping block 302 moves into the mounting groove 3011, the distance between the clamping blocks 302 gradually decreases, thereby clamping the mining anchor cable steel strand firmly and increasing the clamping block. 302 is in contact with the clamping contact surface of the mining anchor cable steel strand, which can avoid clamping the steel strand and improve the stability of clamping to ensure better implementation of the tensile test. A first sliding groove 3012 is provided on the inner wall of the installation groove 3011 corresponding to the clamping block 302. The first sliding groove 3012 is arranged along the inclined wall of the installation groove 3011. A first sliding block 3022 is fixedly connected to the inclined surface of the clamping block 302. The first sliding block 3022 is arranged along the length direction of the clamping block 302. The first sliding block 3022 is slidably connected in the first sliding groove 3012. The clamping block 302 and the seat body 301 are slidably connected through the first sliding block 3022 and the first sliding groove 3012, which plays a role of limiting and guiding the clamping block 302 to avoid position displacement when the clamping block 302 moves or is released.

[0034] In this embodiment, if Figure 4 As shown, a plurality of anti-skid grooves 3021 are evenly arranged along the length direction on the inner wall of the clamp block 302, and the cross-section of the anti-skid grooves 3021 is V-shaped. The anti-skid grooves 3021 are provided to prevent skidding, so that the clamp block 302 can clamp the mining anchor cable steel strand more firmly, preventing slipping and loosening.

[0035] As an implementation method of this embodiment, Figure 3 and Figure 4As shown, the clamping assembly also includes a linkage plate 303 arranged on the top of the clamping block 302, the linkage plate 303 is an L-shaped structure, a second slide groove 3023 is opened on the top of the clamping block 302, a second slider 3031 is fixedly connected to the top of the linkage plate 303, the second slider 3031 is slidably connected in the second slide groove 3023, the linkage plate 303 and the clamping block 302 are slidably connected through the second slider 3031 and the second slide groove 3023, the linkage plate 303 and the clamping block 302 are connected as a whole, and the closing and opening between the clamping blocks 302 can be driven by the longitudinal movement of the linkage plate 303 The adjusting component includes a rotating sleeve 304 rotatably connected to the outside of the seat body 301, an internal thread groove is provided on the inner wall of the rotating sleeve 304, and an external thread groove is provided on the outer wall of the linkage plate 303. The bottom end of the linkage plate 303 is placed in the rotating sleeve 304, and the two are threadedly connected through the internal thread groove and the external thread groove. By rotating the rotating sleeve 304, the linkage plate 303 is threadedly engaged with the rotating sleeve 304, thereby driving the longitudinal movement of the linkage plate 303, and then driving the movement of the clamping block 302, which is convenient for closing and opening operations of the clamping block 302, easy to operate, highly convenient to use, and improves test efficiency.

[0036] In this embodiment, if Figure 3 and Figure 4 As shown, the outer side of the rotating sleeve 304 is fixedly connected to a rotating ring 305 via a fixing rod, and an anti-slip sleeve is sleeved on the outer wall of the rotating ring 305. The provision of the rotating ring 305 facilitates the rotation operation of the rotating sleeve 304, and the provision of the anti-slip sleeve increases the friction between the hand and the rotating ring 305, thereby facilitating better rotation of the rotating ring 305.

[0037] In this embodiment, if Figure 4 As shown, a third slider 3032 is fixedly connected to the inner wall of the linkage plate 303, and a third slide groove 3013 is opened on the outer wall of the seat body 301 corresponding to the linkage plate 303. The third slider 3032 is slidably connected in the third slide groove 3013. The linkage plate 303 and the seat body 301 are slidably connected through the third slider 3032 and the third slide groove 3013, which plays a role of limiting and guiding the linkage plate 303, so that the linkage plate 303 can move longitudinally stably.

[0038] As an implementation method of this embodiment, Figure 2As shown, the mobile mechanism 5 includes a screw rod 501 rotatably connected to both sides of the tension test frame 2, a mobile plate 502 is connected between the two screw rods 501, and a screw sleeve threadedly connected to the screw rod 501 is fixedly connected at the end of the mobile plate 502. One end of the tension sensor is fixedly connected to the top of the seat body 301 of the mobile clamping module 4, and the other end of the tension sensor is fixedly connected to the bottom of the mobile plate 502. The seat body 301 of the fixed clamping module 3 is fixedly connected to the bottom end of the tension test frame 2. The mobile mechanism 5 also includes a driving component, and the driving component includes a driving motor 504. The driving motor 504 is fixedly connected to the bottom of the tension test frame 2 through a motor frame. The output end of the driving motor 504 is fixedly connected to a driving pulley 505, the bottom end of the screw rod 501 extends to the outside of the tension test frame 2 and is fixedly connected to a driven pulley 503, a transmission belt 506 is sleeved between the two driven pulleys 503 and the driving pulley 505, the driving motor 504 drives the driving pulley 505 to rotate, the driving pulley 505 drives the two driven pulleys 503 to rotate through the transmission belt 506, thereby driving the two screw rods 501 to rotate synchronously, which is used to longitudinally adjust the position of the movable plate 502, move the movable clamping module 4 away from the fixed clamping module 3, and perform a tension test on the mining anchor cable steel strand.

[0039] Working principle: When in use, one end of the mining anchor cable strand is placed in the mounting groove 3011 of the upper seat body 301 of the fixed clamping module 3, and the operator drives the rotating sleeve 304 to rotate by rotating the rotating ring 305. The linkage plate 303 and the rotating sleeve 304 are threadedly connected through the internal thread groove and the external thread groove, so that the linkage plate 303 and the rotating sleeve 304 are threadedly engaged, thereby driving the linkage plate 303 to move longitudinally, and the clamping block 302 moves into the mounting groove 3011. The diameter of the mounting groove 3011 gradually decreases from top to bottom, and the outer side surface of the clamping block 302 is an inclined surface that is tightly attached to the inner wall of the mounting groove 3011, so that when the clamping block 302 moves into the mounting groove 3011, the distance between the clamping blocks 302 gradually decreases, thereby clamping the mining anchor cable strand firmly, and the anti-skid groove 3021 is provided on the inner wall of the clamping block 302, so that the clamping block 302 can The clamping of the cable steel strand is more stable to prevent slipping and loosening. One end of the mining anchor cable steel strand is clamped and fixed, and then the other end of the mining anchor cable steel strand is placed in the mounting groove 3011 of the upper seat 301 of the mobile clamping module 4. Repeat the above operation to clamp and fix the other end of the mining anchor cable steel strand. Then, the driving motor 504 drives the active pulley 505 to rotate. The active pulley 505 drives the two driven pulleys 503 to rotate through the transmission belt 506, thereby driving the two screw rods 501 to rotate synchronously, which is used to longitudinally adjust the position of the movable plate 502, and move the mobile clamping module 4 away from the fixed clamping module 3. The mining anchor cable steel strand is subjected to a tension test. The utility model has a simple structure and is easy to operate, improves the test efficiency, effectively improves the clamping stability of the steel strand, ensures that the tension test is better carried out, and improves the accuracy of the tension test results.

[0040] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A tensile testing machine for anchor cable steel strands for mining, comprising a machine base (1) and a tensile testing frame (2) fixedly mounted on the top of the machine base (1), characterized in that: It also comprises a fixed clamping module (3) and a movable clamping module (4), wherein the fixed clamping module (3) is mounted at the bottom end of the tension test frame (2), a movable mechanism (5) is mounted on the tension test frame (2), the movable clamping module (4) is mounted on the movable mechanism (5) and is located directly above the fixed clamping module (3), and the movable clamping module (4) has the same structure as the fixed clamping module (3); The fixed clamping module (3) comprises a seat body (301), a clamping assembly and an adjusting assembly. The seat body (301) is provided with a mounting groove (3011) inside. The clamping assembly is connected to the inside of the mounting groove (3011) and is used to clamp the mining anchor cable steel strand. The adjusting assembly is connected to the outside of the seat body (301) and is used to adjust the clamping or loosening state of the clamping assembly.

2. The mining anchor cable steel strand tensile testing machine according to claim 1, characterized in that: The clamping assembly comprises a clamping block (302) arranged inside the mounting groove (3011); a plurality of the clamping blocks (302) are arranged at equal intervals along the circumferential direction of the mounting groove (3011); the top end of the clamping block (302) extends to the outside of the mounting groove (3011); the mounting groove (3011) is a truncated cone structure; the diameter of the mounting groove (3011) gradually decreases from top to bottom; and the outer side surface of the clamping block (302) is an inclined surface that is tightly attached to the inner wall of the mounting groove (3011).

3. The mining anchor cable steel strand tensile testing machine according to claim 2, characterized in that: A first sliding groove (3012) is provided on the inner wall of the installation groove (3011) corresponding to the clamping block (302); a first sliding block (3022) is fixedly connected to the inclined surface of the clamping block (302); and the first sliding block (3022) is slidably connected in the first sliding groove (3012).

4. The mining anchor cable steel strand tensile testing machine according to claim 2, characterized in that: The clamping assembly also includes a linkage plate (303) arranged on the top of the clamping block (302), the linkage plate (303) is an L-shaped structure, a second slide groove (3023) is opened on the top of the clamping block (302), a second slider (3031) is fixedly connected to the top of the linkage plate (303), and the second slider (3031) is slidably connected in the second slide groove (3023).

5. A mining anchor cable steel strand tensile testing machine according to claim 4, characterized in that: The adjustment assembly comprises a rotating sleeve (304) rotatably connected to the outside of the seat body (301); an internal thread groove is provided on the inner wall of the rotating sleeve (304); an external thread groove is provided on the outer wall of the linkage plate (303); the bottom end of the linkage plate (303) is placed in the rotating sleeve (304); the two are threadedly connected via the internal thread groove and the external thread groove.

6. A mining anchor cable steel strand tensile testing machine according to claim 5, characterized in that: The outer side of the rotating sleeve (304) is fixedly connected to a rotating ring (305) via a fixing rod, and an anti-slip sleeve is sleeved on the outer wall of the rotating ring (305).

7. The mining anchor cable steel strand tensile testing machine according to claim 4, characterized in that: A third sliding block (3032) is fixedly connected to the inner wall of the linkage plate (303), and a third sliding groove (3013) is provided on the outer wall of the seat body (301) corresponding to the linkage plate (303), and the third sliding block (3032) is slidably connected in the third sliding groove (3013).

8. The mining anchor cable steel strand tensile testing machine according to claim 2, characterized in that: A plurality of anti-slip grooves (3021) are evenly arranged on the inner side wall of the clamping block (302) along the length direction.

9. The mining anchor cable steel strand tensile testing machine according to claim 1, characterized in that: The moving mechanism (5) comprises a screw rod (501) rotatably connected to two sides of the tensile test frame (2); a moving plate (502) is connected between the two screw rods (501); a screw sleeve threadedly connected to the screw rod (501) is fixedly connected to the end of the moving plate (502); a tensile sensor is fixedly connected to the top of the seat body (301) of the moving clamping module (4); the tensile sensor is fixedly connected to the bottom of the moving plate (502); the seat body (301) of the fixed clamping module (3) is fixedly connected to the bottom end of the tensile test frame (2); and the moving mechanism (5) further comprises a driving component.

10. A mining anchor cable steel strand tensile testing machine according to claim 9, characterized in that: The driving assembly comprises a driving motor (504), wherein the driving motor (504) is fixedly connected to the bottom of the tensile test frame (2) via a motor frame, the output end of the driving motor (504) is fixedly connected to a driving pulley (505), the bottom end of the screw rod (501) extends to the outside of the tensile test frame (2) and is fixedly connected to a driven pulley (503), and a transmission belt (506) is sleeved between the two driven pulleys (503) and the driving pulley (505).

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