Wedge-shaped tensile fixture

Abstract

The utility model discloses a wedge-shaped tensile fixture, and relates to the technical field of fixtures. The device comprises a main shell, connecting shells are integrally formed at the lower end of the outer wall of the main shell in a bilateral symmetry mode, first mounting blocks are fixedly mounted on the upper sides of the front ends and the rear ends of the inner walls of the two connecting shells correspondingly, and screw rods are rotationally connected between the lower sides of the outer walls of the first mounting blocks and the lower ends of the inner walls of the connecting shells; the outer walls of the two screw rods are both in threaded connection with threaded sleeves, and through open sliding grooves are formed in the opposite sides of the inner walls of the two connecting shells. When the wedge-shaped clamp is used and material samples with poor hardness and strength need to be fixed, the wire hanging wheel can be used for hanging and fixing the material samples, so that the damage to the material samples during clamping and fixing can be avoided, and the situation that the clamped material samples are damaged due to clamping of the wedge-shaped clamp and are broken in advance during a tensile test is avoided; and the accuracy of data measured by the tensile testing machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, in particular to a wedge-shaped stretching clamp. Background Art

[0002] The steel wire used inside the car seat is often used to connect the connection structure between the seat cushion and the backrest, or to support the stability of the seat. At this time, the steel wire plays a connecting and supporting role. After the steel wire raw materials inside the vehicle seat are selected, the steel wire needs to be processed and bent in a series of ways before it can be used at a certain angle and size. Therefore, there are strict regulatory requirements for its quality. Usually, the quality inspection method for steel wire is tensile test. Tensile test refers to a test method for measuring material properties under axial tensile load. The data obtained from the tensile test can be used to determine the elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile performance indicators of the material. Generally, the material is tested by a tensile testing machine. The current tensile testing machine generally clamps and stretches the material with a wedge-shaped clamp, but the wedge-shaped clamp on the current tensile testing machine still has the following disadvantages in actual use:

[0003] 1. The current wedge-shaped clamps generally clamp the material through two movable extrusion blocks. When the tensile testing machine performs tensile tests on materials, it often tests some materials with poor hardness and strength. If these materials with poor strength are directly clamped and fixed by the extrusion blocks on the wedge-shaped clamps, the extrusion blocks will damage the surface of these materials, so that when the tensile testing machine stretches the material, the clamped material sample will break prematurely due to the damage caused by the wedge-shaped clamp, resulting in a large error between the data measured by the tensile testing machine and the actual tensile performance parameters of the material;

[0004] 2. The extrusion block on the existing wedge-shaped fixture has poor stability when clamping the material sample, which may cause the material sample on the wedge-shaped fixture to fall off when the material sample is stretched, causing the tensile test to fail.

[0005] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model aims to provide a wedge-shaped tensile clamp, which can hang and fix the material sample by a wire hanging wheel, thereby avoiding damage to the material sample during clamping and fixing, and solves the problem that the existing wedge-shaped clamp will damage the surface of some materials with poor hardness and strength when clamping and fixing these materials, so that when the tensile testing machine stretches the material, the clamped material sample will break prematurely due to the damage caused by the wedge-shaped clamp.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a wedge-shaped stretching clamp, comprising a main shell, a connecting shell being integrally formed symmetrically on the left and right lower ends of the outer wall of the main shell, a mounting block 1 being fixedly installed on the upper sides of the front and rear ends of the inner walls of the two connecting shells, a screw being rotatably connected between the lower sides of the outer walls of the mounting block 1 and the lower ends of the inner walls of the connecting shells, threaded sleeves being threadedly connected to the outer walls of the two screws, open sliding grooves penetrating through the inner walls of the two connecting shells being provided on the opposite sides, a connecting slider being fixedly installed on the side walls of the threaded sleeves on each left and right side, the connecting sliders on each left and right side penetrate the open sliding grooves on the corresponding sides and are fixedly installed with an extrusion block, a connecting frame being fixedly installed on the middle part of the upper end of the outer wall of the main shell, and a mounting plate being fixedly installed on the side walls of the connecting frame.

[0009] Furthermore, the mounting plate is provided with mounting threaded holes arranged circumferentially.

[0010] Furthermore, a connecting frame is fixedly installed on the lower end of the outer wall of the main shell, and a wire hanging wheel is fixedly installed on the middle part of the lower end of the outer wall of the connecting frame.

[0011] Furthermore, the upper ends of the outer walls of the two screw rods penetrate the upper sides of the outer walls of the mounting blocks 1 on the corresponding sides and are fixedly installed with a non-orthogonal bevel gear 1, and the front and rear sides of the inner wall of the main shell are symmetrically and fixedly installed with mounting blocks 2, and a rotating rod is rotatably connected between the two mounting blocks 2, and the left and right ends of the outer walls of the rotating rod respectively penetrate the mounting blocks 2 on the left and right sides and are fixedly installed with non-orthogonal bevel gear 2, and the non-orthogonal bevel gear 2 is meshingly connected with the non-orthogonal bevel gear 1.

[0012] Furthermore, a rotating shaft is fixedly installed in the middle of the upper end of the inner wall of the main shell body, an orthogonal bevel gear 1 is fixedly installed at the lower end of the outer wall of the rotating shaft, an orthogonal bevel gear 2 is fixedly installed on the side wall of the rotating rod, and the orthogonal bevel gear 2 is meshingly connected with the orthogonal bevel gear 1. A rotating limit plate is rotatably connected to the inner wall of the connecting frame, the upper end of the outer wall of the rotating shaft passes through the upper side of the outer wall of the connecting frame, and the rotating shaft is fixedly connected to the rotating limit plate.

[0013] Furthermore, a rotating block is fixedly mounted on the upper end of the outer wall of the rotating shaft, and a rotating hole is opened on the rotating block.

[0014] Furthermore, teeth are provided on opposite sides of the outer walls of the left and right extrusion blocks, and the teeth on the left and right sides are staggered with each other.

[0015] The utility model has the following beneficial effects:

[0016] 1. When the utility model is in use, when it is necessary to fix some material samples with poor hardness and strength, the material samples can be hung and fixed by the wire hanging wheel, which can avoid damage to the material samples during clamping and fixing, and avoid the clamped material samples being damaged by the clamping of the wedge-shaped clamp and breaking in advance during the tensile test, thereby improving the accuracy of the data measured by the tensile testing machine.

[0017] 2. When the utility model is in use, when it is necessary to clamp and fix some material samples with good hardness and strength, the staggered teeth on the extrusion blocks on both sides can clamp and fix the ends of the material samples. Due to the self-locking property of the threaded sleeve and the screw, the extrusion blocks can be prevented from loosening during stretching, thereby improving the stability of the tensile testing machine when clamping the material samples and improving the success rate of the tensile test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the main housing and the connecting housing of the utility model;

[0021] Figure 3 It is a front view of the internal structure of the main housing and the connecting housing of the utility model;

[0022] Figure 4 It is a cross-sectional structural diagram of the connection frame of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the extrusion block of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Material sample; 100. Main housing; 101. Connecting housing; 110. Mounting block 1; 200. Screw; 210. Threaded sleeve; 220. Connecting slider; 230. Extrusion block; 231. Tooth; 300. Open slide; 400. Connecting frame; 410. Wire hanging wheel; 500. Connecting frame; 510. Mounting plate; 520. Mounting threaded hole; 600. Non-orthogonal bevel gear 1; 610. Mounting block 2; 620. Rotating rod; 630. Non-orthogonal bevel gear 2; 640. Orthogonal bevel gear 2; 650. Rotating shaft; 660. Rotation limit plate; 670. Orthogonal bevel gear 1; 700. Rotating block; 710. Rotating hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] See also Figure 1-5 As shown, the utility model is a wedge-shaped stretching clamp, including a main shell 100, a connecting shell 101 is integrally formed symmetrically at the lower end of the outer wall of the main shell 100, and a mounting block 110 is fixedly installed on the upper sides of the front and rear ends of the inner walls of the two connecting shells 101, and a screw 200 is rotatably connected between the lower side of the outer wall of the mounting block 110 and the lower end of the inner wall of the connecting shell 101, and the outer walls of the two screws 200 are threadedly connected with threaded sleeves 210, and the inner walls of the two connecting shells 101 are provided with open sliding grooves 300 on the opposite sides, and the side walls of the threaded sleeves 210 on each side are fixedly installed with connecting sliders 220, and the connecting sliders 220 on each side penetrate the open sliding grooves 300 on the corresponding side and An extrusion block 230 is fixedly installed, a connecting frame 500 is fixedly installed in the middle of the upper end of the outer wall of the main shell 100, and a mounting plate 510 is fixedly installed on the side wall of the connecting frame 500. The mounting plate 510 is provided with mounting threaded holes 520 arranged circumferentially. Through the rotation of the left and right side screws 200, the threaded sleeve 210 drives the connecting slider 220 to slide up and down in the open slide groove 300, so that the extrusion blocks 230 on both sides move downward at the same time to squeeze each other, or move upward at the same time away from each other. Teeth 231 are provided on the opposite sides of the outer walls of the left and right extrusion blocks 230, and the teeth 231 on the left and right sides are staggered. The end of the material sample 1 is clamped and fixed by the teeth 231 staggered on both sides.

[0028] Among them Figure 1-3 As shown, a connecting frame 400 is fixedly installed on the lower end of the outer wall of the main shell 100, and a hanging wire wheel 410 is fixedly installed on the middle part of the lower end of the outer wall of the connecting frame 400. The hanging wire wheel 410 can be used to fix some material samples 1 with poor hardness and strength. When fixing the material sample 1 with poor strength, firstly wind the end of the material sample 1 around the hanging wire wheel 410 and tie a knot, and then fix the material sample 1 with poor hardness and strength through the hanging wire wheel 410.

[0029] Among them Figure 1-5 As shown, the upper ends of the outer walls of the two screw rods 200 penetrate the upper sides of the outer walls of the mounting blocks 110 on the corresponding sides and are fixedly installed with a non-orthogonal bevel gear 1 600, and the mounting blocks 2 610 are fixedly installed symmetrically on the front and rear sides of the inner wall of the main shell 100, and a rotating rod 620 is rotatably connected between the two mounting blocks 2 610, and the left and right ends of the outer walls of the rotating rod 620 respectively penetrate the mounting blocks 2 610 on the left and right sides and are fixedly installed with non-orthogonal bevel gear 2 630, and the non-orthogonal bevel gear 2 630 is meshedly connected with the non-orthogonal bevel gear 1 600, and the rotation of the rotating rod 620 drives the non-orthogonal bevel gears 2 630 on both sides to rotate, thereby causing the non-orthogonal bevel gears 1 600 on both sides to rotate.

[0030] Among them Figure 2-4 As shown, a rotating shaft 650 is fixedly installed at the middle of the upper end of the inner wall of the main shell 100, an orthogonal bevel gear 1 670 is fixedly installed at the lower end of the outer wall of the rotating shaft 650, an orthogonal bevel gear 2 640 is fixedly installed on the side wall of the rotating rod 620, and the orthogonal bevel gear 2 640 is meshingly connected with the orthogonal bevel gear 1 670, and a rotating limit plate 660 is rotatably connected to the inner wall of the connecting frame 500, the upper end of the outer wall of the rotating shaft 650 passes through the upper side of the outer wall of the connecting frame 500, and the rotating shaft 650 is fixedly connected to the rotating limit plate 660, and a rotating block 700 is fixedly installed on the upper end of the outer wall of the rotating shaft 650, and a rotating hole 710 is opened on the rotating block 700. The test personnel can drive the rotating shaft 650 to rotate by rotating the rotating block 700, thereby driving the orthogonal bevel gear 1 670 and the orthogonal bevel gear 2 640 to rotate, so that the rotating rod 620 rotates, and the rotating hole 710 is convenient for the test personnel to insert an iron rod to facilitate the rotation of the rotating block 700.

[0031] A specific application of this embodiment is: when in use, the user installs the device on the tensile testing machine through the mounting plate 510 and the mounting threaded hole 520. When it is necessary to fix some material samples 1 with poor hardness and strength, firstly, the end of the material sample 1 is wound around the wire hanging wheel 410 and a knot is tied. The material sample 1 with poor hardness and strength is fixed by the wire hanging wheel 410. By hanging and fixing the material sample 1 by the wire hanging wheel 410, damage to the material sample 1 during clamping and fixing can be avoided. When it is necessary to clamp and fix some material samples 1 with good hardness and strength, the tester places the end of the material sample 1 between the two extrusion blocks 230, and the tester can rotate The movable rotating block 700 drives the rotating shaft 650 to rotate, thereby driving the orthogonal bevel gear 1 670 and the orthogonal bevel gear 2 640 to rotate, so that the rotating rod 620 rotates, and the rotation of the rotating rod 620 drives the non-orthogonal bevel gear 2 630 on both sides to rotate, so that the non-orthogonal bevel gear 1 600 on both sides rotates, and the left and right side screws 200 rotate, so that the threaded sleeve 210 drives the connecting slider 220 to slide downward in the open slide groove 300, so that the extrusion blocks 230 on both sides slide downward at the same time and squeeze each other, and the staggered teeth 231 on the extrusion blocks 230 on both sides can clamp and fix the end of the material sample 1, and due to the self-locking property of the threaded sleeve 210 and the screw 200, the extrusion block 230 can be prevented from loosening.

[0032] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A wedge-shaped tensile clamp, comprising a main housing (100), characterized in that: A connecting shell (101) is integrally formed symmetrically at the lower end of the outer wall of the main shell (100), and a mounting block (110) is fixedly mounted on the upper sides of the front and rear ends of the inner walls of the two connecting shells (101), and a screw rod (200) is rotatably connected between the lower side of the outer wall of the mounting block (110) and the lower end of the inner wall of the connecting shell (101), and the outer walls of the two screw rods (200) are threadedly connected with a threaded sleeve (210), and the two connecting shells (101) are fixedly mounted on the upper sides of the front and rear ends of the inner walls of the two connecting shells (101). The inner walls are provided with open sliding grooves (300) extending therethrough on opposite sides, and the side walls of the threaded sleeves (210) on either side are fixedly mounted with connecting sliders (220). The connecting sliders (220) on either side pass through the open sliding grooves (300) on the corresponding side and are fixedly mounted with extrusion blocks (230). A connecting frame (500) is fixedly mounted at the middle of the upper end of the outer wall of the main shell (100), and a mounting plate (510) is fixedly mounted on the side walls of the connecting frame (500).

2. A wedge-shaped tensile fixture according to claim 1, characterized in that: The mounting plate (510) is provided with mounting threaded holes (520) arranged circumferentially.

3. A wedge-shaped tensile fixture according to claim 1, characterized in that: A connecting frame (400) is fixedly mounted on the lower end of the outer wall of the main housing (100), and a wire hanging wheel (410) is fixedly mounted on the middle portion of the lower end of the outer wall of the connecting frame (400).

4. A wedge-shaped tensile fixture according to claim 1, characterized in that: The upper ends of the outer walls of the two screw rods (200) penetrate the upper sides of the outer walls of the mounting blocks 1 (110) on the corresponding sides and are fixedly mounted with a non-orthogonal bevel gear 1 (600); the inner walls of the main housing (100) are symmetrically and fixedly mounted with mounting blocks 2 (610) on the front and rear sides; a rotating rod (620) is rotatably connected between the two mounting blocks 2 (610); the left and right ends of the outer walls of the rotating rod (620) respectively penetrate the mounting blocks 2 (610) on the left and right sides and are fixedly mounted with a non-orthogonal bevel gear 2 (630); the non-orthogonal bevel gear 2 (630) is meshingly connected with the non-orthogonal bevel gear 1 (600).

5. A wedge-shaped tensile fixture according to claim 4, characterized in that: A rotating shaft (650) is fixedly mounted in the middle of the upper end of the inner wall of the main housing (100), an orthogonal bevel gear 1 (670) is fixedly mounted on the lower end of the outer wall of the rotating shaft (650), an orthogonal bevel gear 2 (640) is fixedly mounted on the side wall of the rotating rod (620), the orthogonal bevel gear 2 (640) is meshingly connected with the orthogonal bevel gear 1 (670), a rotating limit plate (660) is rotatably connected to the inner wall of the connecting frame (500), the upper end of the outer wall of the rotating shaft (650) passes through the upper side of the outer wall of the connecting frame (500), and the rotating shaft (650) is fixedly connected to the rotating limit plate (660).

6. A wedge-shaped tensile fixture according to claim 5, characterized in that: A rotating block (700) is fixedly mounted on the upper end of the outer wall of the rotating shaft (650), and a rotating hole (710) is provided on the rotating block (700).

7. A wedge-shaped tensile fixture according to claim 1, characterized in that: The outer walls of the two left and right extrusion blocks (230) are provided with teeth (231) on opposite sides, and the teeth (231) on the left and right sides are staggered.

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