A clamping fixture for a steel wire tensile testing machine

Abstract

This utility model relates to the field of steel wire tensile testing technology, specifically a clamping fixture for a steel wire tensile testing machine, including a mounting plate and a fixing plate. A limit frame is installed on the left side of the fixing plate, and the fixing plate is threadedly connected to the left side of the mounting plate. A clamping mechanism is installed inside the limit frame, and the clamping mechanism includes an upper clamp and a lower clamp. The upper and lower clamps clamp and limit the steel wire. The height-adjustable upper clamp and the bottom-mounted lower clamp can improve the limiting ability when clamping the steel wire, thereby preventing the steel wire from breaking under excessive tension. By installing the fixing plate and the mounting plate separately, the installation efficiency and adaptability can be improved, making it convenient for use with equipment of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of steel wire tensile testing technology, specifically a clamping fixture for a steel wire tensile testing machine. Background Technology

[0002] In the field of performance testing of metallic materials, the tensile properties of steel wire are one of the key indicators for evaluating its quality and applicability. It is widely used in many important industries such as aerospace, automobile manufacturing, and construction engineering. Accurately measuring parameters such as tensile strength, yield strength, and elongation of steel wire is of vital importance for ensuring product structural safety and optimizing production processes. The successful conduct of steel wire tensile testing is inseparable from reliable clamping fixtures. As the connecting bridge between the steel wire tensile testing machine and the specimen, the performance of the clamping fixtures directly affects the accuracy and reliability of the test results.

[0003] For example, CN222825367U discloses a clamping fixture for a steel wire tensile testing machine, relating to the field of tensile testing equipment technology. It includes a base, a rotating disk, a movable clamping plate assembly, a transmission mechanism, and a positioning mechanism. The movable clamping plate assembly is installed on the side wall of the base and slidably connected to it. The transmission mechanism converts the rotational motion of the rotating disk into the radial motion of the clamping plate assembly on the base. The positioning mechanism fixes the movable clamping plate assembly and the transmission mechanism in the required position, thereby clamping the steel wire loops at both ends of the steel wire, ensuring uniform force distribution on the steel wire during the tensile process and more accurate test data. However, the existing device cannot be paired with different mechanical testing equipment, exhibiting limited applicability and simplistic design. Furthermore, the device is prone to breakage under high tensile forces, posing certain safety hazards. Therefore, there is an urgent need to design a clamping fixture for a steel wire tensile testing machine to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping fixture for a steel wire tensile testing machine, so as to solve the problems mentioned in the background art that the existing device cannot be matched and installed with different mechanical testing equipment, has low singleness and applicability, and is prone to breakage under stress when subjected to some large tensile forces, which poses certain safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping fixture for a steel wire tensile testing machine, comprising an installation plate and a fixing plate, wherein a limit frame is installed on the left side of the fixing plate, the fixing plate is threadedly connected to the left side of the installation plate, and a clamping mechanism is installed inside the limit frame, the clamping mechanism comprising an upper clamp and a lower clamp, the upper clamp and the lower clamp clamping and limiting the steel wire.

[0006] Preferably, the mounting plate has inner ring grooves on both sides of its center, and the mounting plate is installed with bolts to the fixing plate.

[0007] Preferably, the outer side of the mounting plate is provided with external mounting holes at equal intervals, and the inner ring groove is provided with four sets of external connection holes.

[0008] Preferably, the fixed plate has four sets of internal connecting holes inside, and the internal connecting holes and the external connecting holes have the same diameter and are all threaded.

[0009] Preferably, the limiting frame has a limiting hole inside, and slide rails are installed on both inner walls of the limiting hole. A pad is fixed at the bottom of the limiting hole.

[0010] Preferably, the upper clamping member includes an upper clamping plate and two sets of upper rack plates. The upper clamping plate slides in the slide rail via sliders fixed on both sides. Two sets of upper rack plates are horizontally fixed on both sides of the bottom end of the upper clamping plate. An upper arc-shaped block is fixed at the center of the two sets of upper rack plates. A sleeve is fixed at the center of the top end of the upper clamping plate. The bottom end of a lead screw is inserted into the sleeve. A screw spool is sleeved at the center of the lead screw. The screw spool is installed at the center of the top end of the limiting frame. The top end of the lead screw extends to the upper side of the limiting frame.

[0011] Preferably, the lower clamping member includes a lower clamping plate and two sets of lower rack plates. Sliders are provided on both sides of the lower clamping plate to slide in the slide rail. Two sets of lower rack plates are horizontally fixed on both sides of the top of the lower clamping plate. The top ends of the two sets of lower rack plates mesh with the top upper rack plate. A lower arc-shaped block is fixed at the center of the two sets of lower rack plates. Multiple sets of springs are fixed at the bottom of the lower clamping plate and installed on the upper side of the pad block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This clamping fixture for a steel wire tensile testing machine improves the limiting ability when clamping the steel wire by using an upper clamp that can be adjusted in height and a lower clamp installed at the bottom, thereby preventing the steel wire from breaking due to excessive tension. The fixture is installed by a fixed plate and an installation plate respectively, which can improve installation efficiency and adaptability, and facilitate the use of equipment of different sizes.

[0014] This clamping fixture for a steel wire tensile testing machine features an external connecting hole on the mounting plate and an internal connecting hole of the same diameter on the fixing plate, facilitating quick installation with bolts and improving efficiency. The upper toothed plate, horizontally fixed to the bottom side of the upper clamping plate, and the lower toothed plate, horizontally installed at the top of the lower clamping plate, can be fitted together to increase the lateral tensile force generated by the steel wire under pulling, preventing breakage and improving the safety of the steel wire for convenient testing. Attached Figure Description

[0015] Figure 1This is a side view of the present invention;

[0016] Figure 2 This is a frontal disassembled view of the present invention;

[0017] Figure 3 This is a front view of the installation disk of this utility model;

[0018] Figure 4 This is a side view of the clamping mechanism of this utility model;

[0019] Figure 5 This is a side view of the clamping mechanism of this utility model when unfolded.

[0020] In the diagram: 1. Mounting plate; 10. External mounting hole; 11. Inner ring groove; 111. External connecting hole; 12. Bolt; 2. Fixing plate; 21. Internal connecting hole; 3. Limiting bracket; 31. Limiting hole; 32. Slide rail; 33. Pad; 4. Clamping mechanism; 41. Upper clamping piece; 411. Upper clamping plate; 412. Upper rack plate; 413. Upper arc block; 414. Sleeve; 415. Lead screw; 416. Lead spool; 42. Lower clamping piece; 421. Lower clamping plate; 422. Lower rack plate; 423. Lower arc block; 424. Spring. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-5 One embodiment provided by this utility model:

[0023] A clamping fixture for a steel wire tensile testing machine includes an mounting plate 1 and a fixing plate 2. A limit frame 3 is installed on the left side of the fixing plate 2. The fixing plate 2 is threadedly connected to the left side of the mounting plate 1. A clamping mechanism 4 is installed inside the limit frame 3. The clamping mechanism 4 includes an upper clamp 41 and a lower clamp 42, which clamp and limit the steel wire.

[0024] As a further feature of this invention, the mounting plate 1 has inner ring grooves 11 on both sides of its center. The mounting plate 1 is installed on the fixing plate 2 using bolts 12. The outer side of the mounting plate 1 has outer mounting holes 10 at equal intervals. The inner ring grooves 11 have four sets of outer connecting holes 111 inside, which can be installed on different devices for use.

[0025] Furthermore, the fixed plate 2 has four sets of internal connecting holes 21 inside. The internal connecting holes 21 have the same diameter as the external connecting holes 111 and are all threaded, which facilitates installation on the fixed plate.

[0026] Furthermore, a limiting hole 31 is opened inside the limiting frame 3. Slide rails 32 are installed on both inner walls of the limiting hole 31. A pad 33 is fixed at the bottom of the limiting hole 31 to facilitate the clamping mechanism to clamp the steel wire.

[0027] As a further improvement of this utility model, the upper clamping member 41 includes an upper clamping plate 411 and two sets of upper rack plates 412. The upper clamping plate 411 slides within the slide rail 32 via sliders fixed on both sides. Two sets of upper rack plates 412 are laterally fixed on both sides of the bottom end of the upper clamping plate 411. An upper arc-shaped block 413 is fixed at the center of the two sets of upper rack plates 412. A sleeve 414 is fixed at the center of the top end of the upper clamping plate 411. The bottom end of a lead screw 415 is inserted into the sleeve 414. A screw cylinder 416 is sleeved at the center of the lead screw 415. The screw cylinder 416 is installed at the center of the top end of the limiting frame 3. The top of the clamp extends to the upper side of the limit frame 3. The lower clamp 42 includes a lower clamp plate 421 and two sets of lower rack plates 422. Both sides of the lower clamp plate 421 are provided with sliders that slide in the slide rail 32. Two sets of lower rack plates 422 are horizontally fixed on both sides of the top of the lower clamp plate 421. The tops of the two sets of lower rack plates 422 mesh with the top upper rack plate 412. The center of the two sets of lower rack plates 422 is fixed with a lower arc block 423. Multiple sets of springs 424 are fixed at the bottom of the lower clamp plate 421 and installed on the upper side of the pad block 33 to clamp and test steel wires of different sizes, thereby preventing the steel wires from breaking due to excessive pulling.

[0028] Working principle: In use, the user first installs the mounting plate 1 on the equipment through the outer mounting hole 10. Then, the limiting frame 3 and the fixing plate 2 are connected to the outside of the mounting plate 1. After aligning the inner connecting hole 21 of the fixing plate 2 with the outer connecting hole 111 of the mounting plate 1, the bolts 12 are used for threaded fixing. Then, one end of the steel wire passes through the center of the upper arc-shaped block 413 at the bottom of the upper clamping plate 411 and the lower arc-shaped block 423 at the top of the lower clamping plate 421. Then, the screw 415 is rotated inside the screw drum 416. The rotation of the screw 415 pushes the upper clamping plate 411 to descend under the limitation of the bottom sleeve 414. The descent of the upper clamping plate 411 drives the two sets of upper rack plates 412 on the bottom side to descend and engage with the two sets of lower rack plates 422 at the top of the lower clamping plate 421. Then, the upper arc-shaped block 413 and the lower arc-shaped block 423 clamp the steel wire for testing. The above is the complete working principle of this utility model.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A clamping tool for a steel wire tensile testing machine, comprising a mounting disc (1) and a fixing disc (2), characterized in that: A limiting frame (3) is installed on the left side of the fixed plate (2). The fixed plate (2) is threadedly connected to the left side of the mounting plate (1). A clamping mechanism (4) is installed inside the limiting frame (3). The clamping mechanism (4) includes an upper clamp (41) and a lower clamp (42). The upper clamp (41) and the lower clamp (42) clamp and limit the steel wire.

2. The clamping tool for a steel wire tensile testing machine according to claim 1, characterized in that: The mounting plate (1) has inner ring grooves (11) on both sides of the center. The mounting plate (1) is installed with the fixing plate (2) using bolts (12).

3. The clamping fixture for a steel wire tensile testing machine according to claim 2, characterized in that: The mounting plate (1) has external mounting holes (10) evenly spaced on the outer side, and four sets of external connecting holes (111) are opened inside the inner ring groove (11).

4. The clamping tool for a steel wire tensile testing machine according to claim 1, characterized in that: The fixed plate (2) has four sets of internal connecting holes (21) inside. The internal connecting holes (21) and the external connecting holes (111) have the same diameter and are threaded.

5. The clamping tool for a steel wire tensile testing machine according to claim 1, characterized in that: The limiting frame (3) has a limiting hole (31) inside. Slide rails (32) are installed on both sides of the limiting hole (31). A pad (33) is fixed at the bottom of the limiting hole (31).

6. The clamping tool for a steel wire tensile testing machine according to claim 1, characterized in that: The upper clamp (41) includes an upper clamp plate (411) and two sets of upper rack plates (412). The upper clamp plate (411) slides in the slide rail (32) through sliders fixed on both sides. Two sets of upper rack plates (412) are fixed laterally on both sides of the bottom end of the upper clamp plate (411). An upper arc block (413) is fixed in the center of the two sets of upper rack plates (412). A sleeve (414) is fixed in the center of the top end of the upper clamp plate (411). The bottom end of a lead screw (415) is inserted into the sleeve (414). A wire spool (416) is sleeved in the center of the lead screw (415). The wire spool (416) is installed in the center of the top end of the limiting frame (3). The top end of the lead screw (415) extends to the upper side of the limiting frame (3).

7. The clamping fixture for a steel wire tensile testing machine according to claim 1, characterized in that: The lower clamp (42) includes a lower clamping plate (421) and two sets of lower rack plates (422). The lower clamping plate (421) has sliders on both sides that slide in the slide rail (32). Two sets of lower rack plates (422) are horizontally fixed on both sides of the top of the lower clamping plate (421). The top ends of the two sets of lower rack plates (422) mesh with the top upper rack plate (412). The center of the two sets of lower rack plates (422) is fixed with a lower arc block (423). Multiple sets of springs (424) are fixed at the bottom of the lower clamping plate (421) and installed on the upper side of the pad block (33).

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