Tool for testing peak tension of guide wire
By designing a peak tensile testing tool for guide wire including clamping blocks, clamping joints, threaded holes, clamping screws and pinch screws, the problem of complex and easy loosening of clamping structure in the prior art is solved, and the stability of the guide wire and the reliability of the test results is achieved.
Patent Information
- Application Number
- CN202420687534.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-03
AI Technical Summary
In the existing guidewire peak tension testing tooling, the clamping structure is complex and easy to loosen, resulting in unstable clamping and affecting the test results.
A tooling including clamping blocks, clamping joints, threaded holes, clamping screws and pinch screws is designed. The jaw is flared by pressing the screw to facilitate the insertion of the guide wire; then the jaw is shrinked by screwing the screw to tighten the jaw to tighten the guide wire.
The stable clamping of the guide wire is achieved, which avoids testing instability caused by offset or loosening of the clamping position, and improves the reliability and efficiency of the test.
Smart Images
Figure CN222599347U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a guide wire testing technology, in particular to a guide wire peak tension testing tool. Background Art
[0002] After the guide wire is manufactured, the tensile strength of the guide wire needs to be tested. During the test, the fixture for clamping the guide wire is installed on the output end of the tensile testing machine, and then the tensile strength of the guide wire is tested after a certain tensile force is applied to the guide wire by the tensile testing machine. The fixture for clamping the guide wire generally consists of a fixed block and a movable block, and the movable block is driven to slide by a threaded rod, and the distance between the movable block and the fixed block is adjusted, so that the guide wire is clamped between the fixed block and the movable block. However, the structure of the sliding of the movable block relative to the fixed block is relatively complex, and the movable block and the fixed block are prone to loosening, resulting in unstable clamping. Utility Model Content
[0003] The utility model aims to provide a guide wire peak tension test tool to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0004] The technical solution adopted to solve the above technical problems is: a guide wire peak tension test tool, including: a clamping block, with a clamping gap, and a threaded hole on one side wall of the clamping gap; a clamping screw, one end of which is in contact with the clamping block on the inner side, and the other end passes through one side of the clamping block and can be screwed into the threaded hole; a top screw, one end of which is threadedly connected to one side wall of the clamping gap, and the other end is in contact with the other side wall of the clamping gap.
[0005] This technical solution has at least the following beneficial effects: the clamp is installed on the output end of the tensile testing machine, and the top screw is turned to make the top screw press against the other side wall of the slit. Under the action of the elasticity of the clamp's own material, the slit is expanded outward and opened. At this time, the clamping screw has not entered the threaded hole, which can facilitate workers to embed the end of the guide wire into the slit, and then the top screw is turned in the opposite direction to make the top screw not press against the other side wall of the slit, so that the slit recovers its natural width. At this time, the slit can just clamp the guide wire and preliminarily fix the position of the guide wire, but does not clamp the guide wire. If the position of the clamped guide wire is offset or inaccurate, the top screw can be re-turned to adjust the position of the guide wire to prevent the guide wire from being clamped multiple times due to the need to adjust the position of the guide wire, which affects the performance of the guide wire end.
[0006] After the guide wire is correctly pre-fixed in the gap, the clamping screw is turned to screw the clamping screw into the threaded hole on the other side wall of the gap, and the clamping block parts on both sides of the gap are pulled closer to each other, so that the gap shrinks inward and the guide wire is clamped, so that the clamping block can clamp the guide wire to ensure that the tensile test of the guide wire by the tensile testing machine can be carried out smoothly. Since the two sides of the clamping block structure are integrated, the relative position is not easy to shift and loosen, which better guarantees the reliability and stability of the clamping guide wire. The gap is expanded and shrunk by the top screw and the clamping screw respectively, which can reduce the large deformation of the clamping block and extend the service life of the clamping block. In addition, the processing and production of the whole clamping block are simpler and more convenient, which reduces the manufacturing cost and improves the economy.
[0007] As a further improvement of the above technical solution, the clamp block is provided with a first arc hole at the bottom end of the slit. The first arc hole can ease the connection between the side wall and the bottom wall of the slit, reduce the stress concentration caused by excessive force on the two side walls of the slit, and reduce the situation where cracks or even breaks are easily formed between the side wall and the bottom wall of the slit, thereby ensuring the reliability and stability of the relative movement between the two side walls of the slit.
[0008] As a further improvement of the above technical solution, the clamp block is provided with a second arc hole in the middle of the clamping gap, the axis direction of the first arc hole is parallel to the axis direction of the second arc hole, the top screw is located between the first arc hole and the second arc hole, and the clamping screw is located on the side of the second arc hole away from the first arc hole. The second arc hole can reduce the thickness of one side of the clamp block, improve the elastic deformation capacity of the clamp block, reduce the tensile force of the clamping screw when connecting the two sides of the clamp block, reduce the situation where the clamping screw is damaged by excessive force or the clamp block is damaged by excessive reaction force, and improve the reliability of the clamp block.
[0009] As a further improvement of the above technical solution, the width of the slit between the first arc hole and the second arc hole is greater than the width of the slit on the side of the second arc hole away from the first arc hole. By setting the width of the slit between the first arc hole and the second arc hole to be larger, the thickness of the clamp block can be reduced, and the elastic deformation capacity of the clamp block can be improved. When the two sides of the slit are pressed by the opening screws, the slit is easy to open and not easy to be damaged.
[0010] As a further improvement of the above technical solution, corresponding clamping grooves are provided on both side walls of the slit. Clamping the guide wire in the clamping grooves can increase the contact area between the guide wire and the clamping block, thereby improving the stability of clamping the guide wire.
[0011] As a further improvement of the above technical solution, two clamping screws are provided, and the two clamping screws are respectively located at two sides of the clamping groove. The guide wire is clamped in the clamping groove, and clamping screws are provided at two sides of the clamping guide wire to shrink the clamping block, which can reduce the situation where the clamping guide wire is unstable due to uneven deformation on both sides of the clamping block, and improve the stability of the clamping guide wire.
[0012] As a further improvement of the above technical solution, the clamping block is rotatably installed with a transmission gear, the clamping screw is coaxially installed with a clamping gear meshing with the transmission gear, the top opening screw is coaxially installed with a top opening gear meshing with the transmission gear, the top opening screw and the clamping screw have opposite thread rotation directions, and when the top opening screw presses against the side wall of the gap, the clamping screw disengages from the threaded hole.
[0013] When the transmission gear is rotated forward first, the clamping gear and the top-opening gear can be driven to rotate, thereby driving the top-opening screw and the clamping screw to rotate forward. Since the top-opening screw and the clamping screw have opposite thread rotation directions, the top-opening screw moves toward the other side wall of the gap to open the gap, and the clamping screw cannot be screwed into the threaded hole on the other side of the gap due to the wrong rotation direction; after the guide wire is placed in the gap, the transmission gear is rotated in the reverse direction to drive the top-opening screw and the clamping screw to reverse, at this time, the top-opening screw releases the pressure on the other side wall of the gap, so that the gap recovers its own width, the guide wire is pre-fixed, and the clamping screw can begin to align with the threaded hole on the other side of the gap, so that the clamping screw can be screwed with the other side wall of the gap; then continue to rotate the transmission gear in the reverse direction, and the end of the top-opening screw begins to move away from the other side wall of the gap to prevent the top-opening screw from interfering with the other side wall of the gap. After the clamping screw is screwed with the other side wall of the gap, when it continues to be screwed into the threaded hole, it can drive the two side parts of the clamping block to approach each other, thereby clamping the guide wire. By operating the forward and reverse rotation of the transmission gear, the top screw and the clamping screw can be driven forward and backward to expand and shrink the gap respectively, thereby realizing the pre-fixation and clamping of the guide wire. The operation is simple and easy to use, which can improve the efficiency of the guide wire tension test.
[0014] As a further improvement of the above technical solution, a handle is installed on the side of the transmission gear away from the clamping block. By turning the handle, the transmission gear can be easily rotated, thereby improving the comfort and convenience of operation.
[0015] As a further improvement of the above technical solution, the clamp block is equipped with a shielding cover for covering the transmission gear, the clamping gear and the top gear, the handle is located on the side of the shielding cover away from the clamp block, and one end of the handle passes through the shielding cover and is connected to the transmission gear. The transmission gear can be driven to rotate by bending the handle without affecting the operation. The shielding cover covers the transmission gear, the clamping gear and the top gear, which can reduce the dust between the gears and cause inaccurate meshing or abnormal noise, and protect the connection structure between the clamp block and the shielding cover.
[0016] As a further improvement of the above technical solution, one of the transmission gear and the clamp block is slidably installed with a positioning block, and the other is provided with a positioning groove for the positioning block to be embedded. The transmission gear or the clamp block installed with the positioning block is installed with an elastic member, and the elastic member provides elastic force to embed the positioning block into the positioning groove. When the positioning block is embedded in the positioning groove, the clamp block does not produce elastic deformation. When the transmission gear rotates until the positioning block corresponds to the positioning groove, the elastic member pushes the positioning block to be embedded in the positioning groove, and locates the initial position of the transmission gear, so that it is easy to judge the position for pre-fixing the guide wire and better grasp the clamping degree of the guide wire. In addition, when the clamp block is not in use, the transmission gear is positioned at a position where the clamp block does not deform, thereby reducing the situation where the clamp block is irreversibly deformed due to long-term deformation, and reducing the impact on the clamping ability of the clamp block. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model;
[0020] Figure 3 It is a schematic cross-sectional structure diagram of the second embodiment of the present utility model.
[0021] The clamping block 10, the clamping gap 11, the threaded hole 12, the connecting block 13, the clamping screw 20, the opening screw 30, the first arc hole 40, the second arc hole 41, the clamping groove 50, the transmission gear 60, the clamping gear 61, the opening gear 62, the handle 70, the positioning block 80, the elastic member 81, and the shielding cover 90. DETAILED DESCRIPTION
[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0026] Embodiment 1:
[0027] Reference Figure 1 A guidewire peak tension test fixture includes a clamp block 10, a connecting block 13 is installed on the top of the clamp block 10, and the connecting block 13 is provided with a through hole in the horizontal direction, so as to facilitate the installation of the clamp block 10 on the output end of the tension testing machine. The clamp block 10 is provided with a slit 11 on the side away from the connecting block 13, and the two sides of the slit 11 respectively penetrate the two sides of the clamp block 10, and the depth of the slit 11 occupies three-fifths to five-sixths of the length of the clamp block 10 in the same direction. Corresponding clamping grooves 50 are provided on both sides of the slit 11, and the cross-section of the clamping groove 50 is semi-elliptical, and the major axis direction of the semi-ellipse is perpendicular to the width direction of the slit 11.
[0028] The clamping block 10 is divided into a left part and a right part by the slit 11. A clamping screw 20 is installed on the right part of the clamping block 10. A threaded hole 12 corresponding to the clamping screw 22 is provided on the side wall of the left part of the clamping block 10 and located at the slit 11. The clamping screw 20 includes a head and a rod. A countersunk hole is provided on the side of the right part of the clamping block 10 away from the slit 11, so that the head of the clamping screw 20 can be located in the countersunk hole. The rod of the clamping screw 20 can be screwed into the threaded hole 12 after passing through the right part of the clamping block 10. When the clamping screw 20 is just screwed into the threaded hole 12 or thereafter, the head of the clamping screw 20 just contacts the bottom wall of the countersunk hole. If the clamping screw 20 is further rotated, the right part and the left part of the clamping block 10 can be brought closer to each other, that is, the width of the slit 11 is reduced. When the guide wire is placed in the clamping groove 50 in the slit 11, the guide wire can be firmly clamped.
[0029] A push-up screw 30 is also installed on the right side of the clamp block 10. The push-up screw 30 also includes a head and a rod. The end of the rod of the push-up screw 30 close to the head is threadedly connected to the right side of the clamp block 10, and the end of the rod of the push-up screw 30 away from the head abuts against the side wall of the gap 11 on the left side of the clamp block 10. A countersunk hole for accommodating the head of the push-up screw 30 is also provided on the side of the right side of the clamp block 10 away from the gap 11.
[0030] In the initial state, the clamping screw 20 is not screwed into the threaded hole 12. By rotating the top screw 30, the end of the top screw 30 rod away from the head contacts the side wall of the slit 11 on the left side of the clamp block 10, so that the slit 11 is stretched open and the opening of the slit 11 is enlarged, so that it is convenient to extend the guide wire into the slit 11 and align it with the clamping groove 50, thereby improving the efficiency of the guide wire clamping. After the guide wire is placed in the clamping groove 50, the top screw 30 is rotated in the opposite direction, so that the end of the top screw 30 rod away from the head gradually releases the pressure on the side wall of the slit 11, so that the slit 11 restores its natural width. At this time, the side wall of the clamping groove 50 just contacts the outer side wall of the guide wire, and the position of the guide wire is pre-fixed. Then, by rotating the clamping screw 20, the width of the slit 11 is reduced, and the guide wire is clamped, so that the tensile testing machine can test the guide wire.
[0031] The clamp block 10 is provided with a first arc hole 40 and a second arc hole 41 which are both through both sides. The first arc hole 40 is located at the bottom end of the slit 11, and the second arc hole 41 is located at the middle of the slit 11, and the first arc hole 40 and the second arc hole 41 are parallel to the length direction of the slit 11. The cross-sections of the first arc hole 40 and the second arc hole 41 are both circular or elliptical, and the first arc hole 40 and the second arc hole 41 are both connected to the slit 11, so that the first arc hole 40 becomes the bottom end part of the slit 11, and the second arc hole 41 forms a semi-arc groove on both side walls of the slit 11. The width of the slit 11 between the first arc hole 40 and the second arc hole 41 is larger than the width of the second arc hole 41 on the side away from the first arc hole 40. Thereby, the overall elastic deformation capacity of the clamp block 10 can be improved, and the situation of easy fracture caused by stress concentration can be reduced.
[0032] One opening screw 30 is provided and is located in the middle of the length direction of the clamping block 10. The opening screw 30 is located between the first arc hole 40 and the second arc hole 41 in the depth direction of the slit 11. Two clamping screws 20 are provided and are located on both sides of the clamping groove 50 in the length direction of the clamping block 10. Both clamping screws 20 are located on one side of the second arc hole 41 away from the first arc hole 40 in the depth direction of the slit 11. By rationally arranging the positions of the opening screw 30 and the clamping screw 20, the clamping effect of the clamping block 10 on the guide wire is better guaranteed. In other embodiments, only one clamping screw 20 may be provided, and the clamping screw 20 may be located on one side of the clamping groove 50 or at the top position away from one end of the guide wire.
[0033] The heads of the top screw 30 and the clamping screw 20 away from the end of the rod may be provided with a hexagonal socket to facilitate the use of tools to rotate the top screw 30 and the clamping screw 20. In other embodiments, the heads of the top screw 30 and the clamping screw 20 may be provided with knobs extending out of the outer surface of the clamping block 10, and the corresponding top screw 30 and the clamping screw 20 may be rotated by operating the corresponding knobs to facilitate the clamping and loosening of the guide wire, thereby improving the efficiency of the guide wire tension test. In other embodiments, the top screw 30 and the clamping screw 20 may be correspondingly installed on the left side of the clamping block 10, and the threaded hole 12 may be provided on the right side of the clamping block 10, and the top screw 30 and the clamping screw 20 may be rotated from the left side of the clamping block 10.
[0034] Embodiment 2:
[0035] Reference Figure 2-3 The difference between the second embodiment and the first embodiment is that the following structure is added:
[0036] A receiving groove is provided on the right side of the clamping block 10 away from the clamping gap 11. The cross section of the receiving groove is triangular. The heads of two clamping screws 20 and one top screw 30 are respectively accommodated in the three corner positions of the receiving groove. A transmission gear 60 is rotatably installed in the middle position of the bottom wall of the receiving groove. One end of the head of the two clamping screws 20 is coaxially installed with a clamping gear 61, and one end of the head of the top screw 30 is coaxially installed with a top gear 62. The two clamping gears 61 and one top gear 62 are both meshed and connected with the transmission gear 60. Among them, the diameter of the transmission gear 60 is larger than the diameter of the clamping gear 61 and the top gear 62, and the thickness of the transmission gear 60 is larger than the thickness of the clamping gear 61 and the top gear 62. The thread rotation direction of the clamping gear 61 and the top gear 62 is opposite, that is, if the top gear 62 adopts a left-handed thread, the clamping gear 61 adopts a right-handed thread. A handle 70 is installed in the middle of the side of the transmission gear 60 away from the clamping block 10.
[0037] By rotating the handle 70 forward (rotating the handle 70 in the clockwise direction in the right side view), the transmission gear 60 is driven to rotate forward, thereby driving the clamping gear 61 and the top gear 62 to rotate in the opposite direction. Since the threads of the clamping gear 61 and the top gear 62 are rotated in opposite directions, the top gear 62 is screwed into the left part of the clamp block 10 and pressed against the side wall of the slit 11, thereby opening the slit 11. However, the clamping gear 61 cannot be screwed into the threaded hole 12 because its rotation direction is opposite to the direction of screwing into the threaded hole 12, thereby maintaining the separation state of the clamping gear 61 and the left part of the clamp block 10. At this time, due to the expansion of the slit 11, it is convenient to embed the end of the guide wire into the clamping groove 50.
[0038] Then, by rotating the handle 70 in the opposite direction, the transmission gear 60 is driven to rotate in the opposite direction, thereby driving the clamping gear 61 and the top gear 62 to rotate in the positive direction, and the top gear 62 is rotated away from the left side of the clamp block 10 and gradually reduces the pressure on the side wall of the slit 11, so that the slit 11 restores its natural width, and the two side walls of the clamping groove 50 just clamp the guide wire to fix the guide wire. At the same time, the thread at the end of the threaded hole 12 just hits the end position of the clamping screw 20.
[0039] When the handle 70 is rotated in the opposite direction, the clamping screw 20 can be screwed into the threaded hole 12. When the head of the clamping screw 20 contacts the bottom wall of the accommodating groove, the left and right parts of the clamping block 10 can be brought close to each other to clamp the guide wire, thereby fixing the guide wire and facilitating the tensile test of the guide wire.
[0040] After the guidewire test is completed, the handle 70 can be rotated forward to open the clamping gap 11, so as to take out the tested guidewire and replace the next guidewire to be tested. The operation is convenient and the efficiency of the tension test on the guidewire can be improved.
[0041] A shielding cover 90 is detachably installed on the right side of the clamping block 10 away from the slit 11 by bolts. The shielding cover 90 shields the opening of the receiving groove and covers the transmission gear 60, the clamping gear 61 and the top gear 62. The handle 70 is located on the side of the shielding cover 90 away from the clamping block 10. One end of the handle 70 passes through the middle of the shielding cover 90 and is fixed to the middle of the transmission gear 60, so that the transmission gear 60 can be easily rotated by rotating the handle 70. At the same time, when the slit 11 is at a natural width, the clamping screw 20 is restricted by the shielding cover 90 so that the end of the clamping screw 20 just hits the opening of the threaded hole 12, so that the clamping screw 20 can be smoothly screwed into the threaded hole 12 when it rotates forward, ensuring the clamping effect of the clamping block 10 on the guide wire. When the slit 11 is at a natural width, a certain distance is set between the head of the top screw 30 and the shielding cover 90 to ensure that there is no interference between the top screw 30 and the shielding cover 90. In other embodiments, if there is no shielding cover 90 to restrict the clamping screw 20 , a protrusion may be provided on the side wall of the receiving groove to restrict the position of the head of the clamping screw 20 .
[0042] A concave hole is provided on the side of the transmission gear 60 away from the clamping block 10, and the concave hole is not at the center of the transmission gear 60. The concave hole contains an elastic member 81 and a positioning block 80, and the positioning block 80 is slidably arranged in the concave hole along the depth direction of the concave hole. Among them, the elastic member 81 is a coil spring, one end of the coil spring abuts against the bottom wall of the concave hole, and the other end abuts against the positioning block 80, and the positioning block 80 is a ball. The ball part extends out of the opening of the concave hole and is pressed against the side wall of the shielding cover 90 under the action of the coil spring. A positioning groove is provided at the corresponding position of the side wall of the shielding cover 90. When the gap 11 is at the natural width, when the transmission gear 60 is in this position, the ball just aligns with the position of the positioning groove, and under the action of the coil spring, the ball is embedded in the positioning groove to position the transmission gear 60 in this position. When the clamping block 10 is not in use, the transmission gear 60 can be positioned at this position, so that the clamping block 10 has no elastic deformation and the clamping block 10 is better preserved.
[0043] In other embodiments, the elastic member 81 may also be a curved elastic sheet or an elastic rubber block, etc. In other embodiments, if the shielding cover 90 is not provided or it is inconvenient to provide a positioning groove on the shielding cover 90, a concave hole may be provided on a side of the transmission gear 60 close to the clamping block 10, and the positioning groove is correspondingly provided on the bottom wall of the accommodating groove. Under the action of the elastic member 81, the positioning block 80 may be embedded in the positioning groove to position the transmission gear 60.
[0044] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A guide wire peak tension test tool, characterized in that: include: The clamp block is provided with a clamping slit, and a threaded hole is provided on one side wall of the clamping slit; A clamping screw, one end of which is against the clamping block at its inner side, and the other end of which passes through one side of the clamping block and can be screwed into the threaded hole; A top screw has one end threadedly connected to one side wall of the slot and the other end abutting against the other side wall of the slot.
2. According to claim 1, a guide wire peak tension test tool is characterized in that: The clamping block is provided with a first arc hole at the bottom end of the clamping gap.
3. A guidewire peak tension test tool according to claim 2, characterized in that: The clamping block is provided with a second arc hole in the middle position of the clamping gap, the axial direction of the first arc hole is parallel to the axial direction of the second arc hole, the top opening screw is located between the first arc hole and the second arc hole, and the clamping screw is located on the side of the second arc hole away from the first arc hole.
4. A guidewire peak tension test tool according to claim 3, characterized in that: The width of the slit between the first circular arc hole and the second circular arc hole is greater than the width of the slit on a side of the second circular arc hole away from the first circular arc hole.
5. The guide wire peak tension test tool according to claim 1, characterized in that: The two side walls of the clamping gap are both provided with corresponding clamping grooves.
6. A guidewire peak tension test tool according to claim 5, characterized in that: There are two clamping screws, and the two clamping screws are respectively located at two sides of the clamping groove.
7. The guidewire peak tension test tool according to claim 1, characterized in that: The clamping block is rotatably mounted with a transmission gear, the clamping screw is coaxially mounted with a clamping gear meshing with the transmission gear, the top screw is coaxially mounted with a top gear meshing with the transmission gear, the top screw and the clamping screw have opposite thread rotation directions, and when the top screw presses against the side wall of the clamping gap, the clamping screw disengages from the threaded hole.
8. A guidewire peak tension test tool according to claim 7, characterized in that: A handle is installed on the side of the transmission gear away from the clamping block.
9. A guidewire peak tension test tool according to claim 8, characterized in that: The clamp block is provided with a shielding cover for covering the transmission gear, the clamping gear and the top gear, the handle is located on the shielding cover away from the clamp block, and one end of the handle passes through the shielding cover and is connected to the transmission gear.
10. A guidewire peak tension test tool according to claim 7, characterized in that: One of the transmission gear and the clamping block is slidably installed with a positioning block, and the other is provided with a positioning groove for the positioning block to be embedded in. The transmission gear or the clamping block installed with the positioning block is installed with an elastic member, and the elastic member provides elastic force to embed the positioning block into the positioning groove. When the positioning block is embedded in the positioning groove, the clamping block does not produce elastic deformation.