Retaining device for high-speed stretching gap experiment

Abstract

The utility model relates to the field of tensile tests, in particular to a retaining device for a high-speed tensile gap experiment, which comprises a working plate, supporting rods are mounted at four corners of the outer wall of the top of the working plate, a top plate is mounted on the outer walls of the tops of the supporting rods, and a hydraulic push rod is mounted in the center of the top plate. A mounting plate is mounted on the outer wall of the bottom end of the hydraulic push rod, and retaining structures are mounted on the outer walls of the two sides of the working plate. The maintaining structure comprises an adjusting plate, a threaded hole formed in the center of the adjusting plate, an adjusting screw connected into the threaded hole in a threaded mode, an adjusting groove formed in the center of the top end of the adjusting screw and a pull rod placed in the adjusting groove. The first wedging block and the second wedging block on the pull rod make contact, impact force generated by breakage is strongly guided to the first wedging block and the second wedging block, the influence of the impact force on the hydraulic push rod is reduced, equipment and personnel can be protected conveniently, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology, and in particular to a holding device for high-speed tensile gap testing. Background Technology

[0002] Tensile testing is a test method for determining the properties of materials under axial tensile load. Data obtained from tensile testing can be used to determine a material's elastic limit, elongation, elastic modulus, proportional limit, reduction of area, tensile strength, yield point, yield strength, and other tensile performance indicators.

[0003] During a tensile test, if the test object breaks during the test, the tool connecting the object will rebound after losing its restraint, which can easily cause an impact to the equipment and the surrounding area. Such impacts have a large energy and can easily damage the equipment and personnel. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems and shortcomings by proposing a holding device for high-speed tensile gap testing: a first contact block on the pull rod contacts a second contact block, forcefully guiding the impact force generated by the fracture to the first and second contact blocks, reducing the impact of the impact force on the hydraulic push rod, facilitating the protection of equipment and personnel, and ensuring ease of use and maintenance of equipment condition.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A holding device for a high-speed tensile gap test includes a working plate. Support rods are installed at the four corners of the top outer wall of the working plate, and a top plate is installed on the top outer wall of the support rods. A hydraulic push rod is installed at the center of the top plate, and an mounting plate is installed on the bottom outer wall of the hydraulic push rod. Holding structures are installed on both outer walls of the working plate. The holding structures include an adjusting plate, a threaded hole at the center of the adjusting plate, an adjusting screw threaded into the threaded hole, an adjusting groove at the center of the top of the adjusting screw, and a pull rod placed in the adjusting groove.

[0007] Preferably, the top outer wall of the adjustment plate is equipped with mounting frames at both ends, and the inner outer wall of the mounting frames is provided with a fitting block.

[0008] Preferably, a fastening hole is provided at the center of the adjustment plate and the mounting frame, and a fastening screw is threaded into the fastening hole, and the top of the outer wall of the fastening screw contacts the bottom outer wall of the second mating block.

[0009] Preferably, the outer wall of the pull rod is fitted with a first locking block, and the two outer walls of the first locking block are slidably connected to one outer wall of the second locking block;

[0010] According to the above scheme: the first and second locking blocks on the pull rod are in contact, which strongly guides the impact force generated by the breakage to the first and second locking blocks, reducing the impact force on the hydraulic push rod, which is convenient for protecting equipment and personnel and for easy use.

[0011] Preferably, a rotation counter is installed on the bottom outer wall of the adjusting screw, and mounting holes are provided on both sides of the adjusting plate and the mounting frame, with mounting screws installed in the mounting holes.

[0012] Preferably, a three-jaw chuck is installed on the bottom outer wall of the mounting plate and the top outer wall of the working plate, and extension rods are welded to the outer walls of both ends of the mounting plate, with the top outer wall of the pull rod installed at one end of the extension rod.

[0013] According to the above scheme: one end of the pull rod is inserted into the adjustment groove of the adjustment screw, and the position of the first engagement block in the pull rod is adjusted by rotating the adjustment screw so that the first engagement block is located at the position where the workpiece breaks. The number of turns is recorded by the count counter, which is convenient for judging the adjustment distance and for adjusting the spacing to cope with the impact, thus maintaining the stability of the equipment.

[0014] Preferably, the hydraulic push rod and the revolution counter are connected to the controller via wires, and the controller is connected to the power supply via wires.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The first and second locking blocks on the pull rod are in contact, which strongly guides the impact force generated by the breakage to the first and second locking blocks, reducing the impact force on the hydraulic push rod, which is convenient for protecting equipment and personnel and is easy to use.

[0017] 2. Insert one end of the pull rod into the adjustment groove of the adjustment screw, rotate the adjustment screw to adjust the position of the first engagement block in the pull rod, so that the first engagement block is located at the position where the workpiece breaks. The number of turns is recorded by the counter to facilitate the determination of the adjustment distance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall bottom structure of a holding device for high-speed tensile gap testing proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the adjusting block structure of a holding device for high-speed tensile gap testing proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the adjusting screw structure of a holding device for high-speed tensile gap testing proposed in this utility model;

[0021] Figure 4This is a schematic diagram of the overall structure of a holding device for high-speed tensile gap testing proposed in this utility model.

[0022] In the diagram: 1. Working plate, 2. Top plate, 3. Hydraulic push rod, 4. Mounting plate, 5. Three-jaw chuck, 6. Extension rod, 7. Retaining structure, 8. Adjusting plate, 9. Threaded hole, 10. Adjusting screw, 11. Adjusting groove, 12. Pull rod, 13. Mating block one, 14. Turn counter, 15. Mounting frame, 16. Fastening hole, 17. Fastening screw, 18. Mating block two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Reference Figure 1-4 A holding device for high-speed tensile gap test includes a working plate 1, support rods are installed at the four corners of the top outer wall of the working plate 1, and a top plate 2 is installed on the top outer wall of the support rods. A hydraulic push rod 3 is installed at the center of the top plate 2, and an mounting plate 4 is installed on the bottom outer wall of the hydraulic push rod 3. Holding structures 7 are installed on the two outer walls of the working plate 1.

[0026] Three-jaw chucks 5 are installed on the bottom outer wall of the mounting plate 4 and the top outer wall of the working plate 1, and extension rods 6 are welded to the outer walls of both ends of the mounting plate 4. The top outer wall of the pull rod 12 is installed on one end of the extension rod 6.

[0027] The hydraulic push rod 3 and the rotation counter 14 are connected to the controller via wires, and the controller is connected to the power supply via wires.

[0028] Example 2:

[0029] Reference Figure 1-3 The retaining structure 7 includes an adjusting plate 8, a threaded hole 9 opened at the center of the adjusting plate 8, an adjusting screw 10 threaded in the threaded hole 9, an adjusting groove 11 opened at the center of the top of the adjusting screw 10, and a pull rod 12 placed in the adjusting groove 11. The pull rod 12 moves up and down in the adjusting groove 11 as the hydraulic push rod 3 moves. The first engaging block 13 is installed on the outer wall of the pull rod 12. After the first engaging block 13 and the second engaging block 18 come into contact with each other, they will absorb the impact force generated by the breakage.

[0030] Mounting frames 15 are installed at both ends of the top outer wall of the adjusting plate 8, and a second fitting block 18 is placed on the inner outer wall of the mounting frame 15. The first fitting block 13 on the pull rod 12 contacts the second fitting block 18, which strongly guides the impact force generated by the breakage to the first fitting block 13 and the second fitting block 18, reducing the impact force on the hydraulic push rod 3 and facilitating the protection of equipment and personnel.

[0031] A fastening hole 16 is provided at the center of the adjusting plate 8 and the mounting frame 15, and a fastening screw 17 is threaded into the fastening hole 16, and the top of the outer wall of the fastening screw 17 contacts the bottom outer wall of the mating block 2 18.

[0032] The outer wall of the pull rod 12 is fitted with a first fitting block 13, and the two outer walls of the first fitting block 13 are slidably connected to one outer wall of the second fitting block 18.

[0033] A rotation counter 14 is installed on the outer wall of the bottom end of the adjusting screw 10, and mounting holes are provided on both sides of the outer wall of the adjusting plate 8 and the mounting frame 15. Mounting screws are provided in the mounting holes. The mounting frame 15 installed on the adjusting plate 8 fixes the second mating block 18 in the mounting frame 15 by rotating the fastening screw 17, which facilitates the installation and removal of the second mating block 18 and allows for adjustment of the position of the second mating block 18 in the mounting frame 15.

[0034] Working principle: During use, the workpiece to be tested is placed at the center of the working plate 1 and the top plate 2. The two ends of the workpiece are clamped by the three-jaw chuck 5. The outer wall of the pull rod 12 is fitted with the first fitting block 13, and one end of the pull rod 12 is inserted into the adjustment groove 11 of the adjustment screw 10. The adjustment screw 10 is rotated to adjust the position of the first fitting block 13 in the pull rod 12 so that the first fitting block 13 is located at the position where the workpiece breaks. The number of rotations is recorded by the rotation counter 14 to facilitate the determination of the adjustment distance. After the hydraulic push rod 3 is started, the pull rod 12 and the workpiece are moved by the three-jaw chuck 5 and the extension rod 6 on the mounting plate 4 to stretch the workpiece. When the workpiece breaks during the stretching process, the force generated by the breakage causes the hydraulic push rod 3 to retract. At this time, the first fitting block 13 on the pull rod 12 comes into contact with the second fitting block 18, which strongly guides the impact force generated by the breakage to the first fitting block 13 and the second fitting block 18, reducing the impact force on the hydraulic push rod 3 and facilitating the protection of equipment and personnel.

[0035] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A holding device for high speed tensile gap experiments, comprising a work plate (1), characterized in that, The top outer wall of the work plate (1) is provided with support rods at four corners, and the top outer wall of the support rod is provided with a top plate (2), the center of the top plate (2) is provided with a hydraulic push rod (3), and the bottom end outer wall of the hydraulic push rod (3) is provided with a mounting plate (4), the both sides of the work plate (1) are provided with a retaining structure (7); The retaining structure (7) comprises an adjusting plate (8), a threaded hole (9) opened at the center of the adjusting plate (8), an adjusting screw (10) screwed in the threaded hole (9), an adjusting groove (11) opened at the center of the top end of the adjusting screw (10), and a pull rod (12) placed in the adjusting groove (11).

2. The holding device for high speed tensile gap experiment according to claim 1, characterized in that, The top outer wall of the adjusting plate (8) is provided with mounting frames (15) at both ends, and the inner side of the mounting frame (15) is placed with a second engaging block (18).

3. The holder for high speed tensile gap experiment according to claim 1, characterized in that, The center of the adjusting plate (8) and the mounting frame (15) is provided with a fastening hole (16), and the fastening hole (16) is screwed with a fastening screw (17), and the top end of the outer wall of the fastening screw (17) is in contact with the bottom outer wall of the second engaging block (18).

4. The holder for high speed tensile gap experiment according to claim 1, characterized in that, The outer wall of the pull rod (12) is provided with a first engaging block (13), and the two sides of the first engaging block (13) are slidably connected with one side of the second engaging block (18).

5. The holder for high speed tensile gap experiment according to claim 1, characterized in that, The bottom end outer wall of the adjusting screw (10) is provided with a number counter (14), and the two sides of the adjusting plate (8) and the mounting frame (15) are provided with mounting holes, and the mounting holes are provided with mounting screws.

6. The holder for high speed tensile gap experiment according to claim 1, characterized in that, The bottom outer wall of the mounting plate (4) and the top outer wall of the work plate (1) are provided with three-jaw chucks (5), and the both ends of the outer wall of the mounting plate (4) are welded with extension rods (6), and the top end of the outer wall of the pull rod (12) is mounted on one end of the extension rod (6).

7. The holder for high speed tensile gap experiment according to claim 1, wherein, The hydraulic push rod (3) and the number counter (14) are connected with a controller through wires, and the controller is connected with a power supply through wires.

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