Protection structure of extensometer

Abstract

The utility model discloses a protection structure of an extensometer, which relates to the technical field of extensometers and comprises a first fixing rod, a hydraulic clamp, a sensor fixing plate, a first pipe clamp, a second fixing rod, a second pipe clamp, a third pipe clamp, a photoelectric switch, a full-automatic extensometer device, a movable cross beam and an electronic universal testing machine main body, the movable cross beam and the hydraulic clamp are arranged on the inner side of the electronic universal testing machine main body, and the full-automatic extensometer device is arranged on the outer side of the electronic universal testing machine main body. By adopting the structure, the lower tool bit is moved to a fixed position, and when the electronic universal testing machine main body works and the main machine moving cross beam moves to the upper tool bit to prevent the two photoelectric switches from transmitting photoelectric signals, the main machine moving cross beam stops moving, so that an effect of protecting the full-automatic extensometer device is achieved; and the first pipe clamp and the second pipe clamp are connected and fixed with the second fixing rod, so that the function of arranging the circuit of the photoelectric switch can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of extensometers, and in particular relates to a protective structure of an extensometer. Background Art

[0002] An extensometer is a precision instrument used to measure the deformation of a material under stress, and is one of the important means of testing the mechanical properties of materials. It usually consists of three parts: a sensor, an amplifier, and a recorder. It evaluates the mechanical properties of a material by measuring the linear deformation between two points of an object. There are many types of extensometers, which can be divided into two categories according to their working principles: mechanical and electronic. Mechanical extensometers, such as dial indicator, lever, and optical types, directly indicate the displacement value through a pointer or cursor. Electronic extensometers, such as resistance strain, inductance, and capacitance types, convert deformation into electrical signals for measurement, and have higher sensitivity and accuracy. Extensometers are widely used in fields such as materials science research, product quality control, and industrial production. It can be used to evaluate key mechanical properties of materials such as elastic modulus, yield strength, and elongation, as well as to detect the uniformity, stability, and reliability of materials. In addition, extensometers can also be used to study material failure modes, fracture toughness, etc., providing an important reference for material selection and application.

[0003] With the development of science and technology and the automation industry, the deformation measurement devices for materials are gradually improving. The measurement of various deformation data in material tests in testing machines has also been transformed from ordinary extensometers that require manual clamping to fully automatic extensometers that do not require human operation. When clamping the specimen, the movement of the main machine beam is usually operated by humans. If used in conjunction with a fully automatic extensometer, it may happen that due to human negligence, excessive movement of the beam may damage the blade of the fully automatic extensometer. Utility Model Content

[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a protective structure for an extensometer to solve the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] The utility model provides a protection structure of extensometer, including first fixed rod, hydraulic clamp, sensor fixed plate, first pipe clamp, second fixed rod, second pipe clamp, third pipe clamp, photoelectric switch, full -automatic extensometer device, mobile crossbeam, electronic universal testing machine main body, mobile crossbeam and hydraulic clamp all are located electronic universal testing machine main body inside, full -automatic extensometer device installs in the outside of electronic universal testing machine main body, third pipe clamp fixed mounting is in mobile crossbeam outside, the upper end of first fixed rod is located third pipe clamp inside, sensor fixed plate is located first fixed rod lower end outside, photoelectric switch is fixed in sensor fixed plate outside, first pipe clamp fixed mounting is in the lower end of mobile crossbeam, the upper end of second fixed rod is located first pipe clamp inside, second pipe clamp fixed mounting is in the lower end of second fixed rod.

[0007] As a preferred technical solution, the upper end of the first fixed rod penetrates the round hole on the third pipe clamp and is fixed and clamped by a screw, and the lower end of the first fixed rod penetrates the round hole on the sensor fixed plate and is fixed and clamped by a screw.

[0008] As a preferred technical solution, the outer side of the third pipe clamp is fixedly connected with a fixed seat, the inner side of the fixed seat is provided with a fixed bolt, and the third pipe clamp is fixedly installed by penetrating the fixed seat and the outer wall of the mobile crossbeam through the fixed bolt.

[0009] As a preferred technical solution, the photoelectric switch is fixedly installed on the outer side of the sensor fixed plate by a screw.

[0010] As a preferred technical solution, the upper end of the second fixed rod penetrates the round hole on the first pipe clamp and is fixed and clamped by a screw, the first pipe clamp is fixedly installed at the lower surface of the mobile crossbeam by a screw, and the lower end of the second fixed rod penetrates the round hole on the second pipe clamp and is fixed and clamped by a screw.

[0011] As a preferred technical solution, the full-automatic extensometer device is fixedly installed on the main machine table of the electronic universal testing machine main body by a screw, and the hydraulic clamp is fixed on the main machine of the electronic universal testing machine main body in the form of a through pin.

[0012] In summary, the utility model mainly has the following beneficial effects:

[0013] The third pipe clamp is connected and installed through the moving cross beam, the third pipe clamp is connected and installed with the first fixed rod, the photoelectric switch is connected and installed on the sensor fixed plate, the sensor fixed plate is connected and installed with the first fixed rod to become a whole, the full-automatic extensometer device is connected and installed on the main machine of the electronic universal testing machine body, in use, the lower cutter head is moved to the fixed position, when the electronic universal testing machine body works, the main machine moving cross beam is stopped from moving when the main machine moving cross beam moves to the upper cutter head to hinder the transmission of photoelectric signals of the two photoelectric switches, the function of protecting the full-automatic extensometer device is achieved, in addition, the first pipe clamp and the second pipe clamp are connected and fixed with the second fixed rod, the function of arranging the photoelectric switch circuit is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is a half sectional view of the utility model;

[0016] Figure 3 is a half sectional view of the utility model; Figure 2 is an enlarged view of A in the middle.

[0017] Signs: 1, first fixed rod; 2, hydraulic clamp; 3, sensor fixed plate; 4, first pipe clamp; 5, second fixed rod; 6, second pipe clamp; 7, third pipe clamp; 8, photoelectric switch; 9, full-automatic extensometer device; 10, moving cross beam; 11, electronic universal testing machine body; 12, fixed seat; 13, fixed bolt. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 3The protection structure of the extensometer comprises a first fixed rod 1, a hydraulic clamp 2, a sensor fixed plate 3, a first pipe clamp 4, a second fixed rod 5, a second pipe clamp 6, a third pipe clamp 7, a photoelectric switch 8, a full-automatic extensometer device 9, a moving cross beam 10, and an electronic universal testing machine main body 11. The moving cross beam 10 and the hydraulic clamp 2 are arranged on the inner side of the electronic universal testing machine main body 11. The full-automatic extensometer device 9 is arranged on the outer side of the electronic universal testing machine main body 11. The third pipe clamp 7 is fixedly arranged on the outer side of the moving cross beam 10. The upper end of the first fixed rod 1 is arranged on the inner side of the third pipe clamp 7. The sensor fixed plate 3 is arranged on the outer side of the lower end of the first fixed rod 1. The photoelectric switch 8 is fixedly arranged on the outer side of the sensor fixed plate 3. The first pipe clamp 4 is fixedly arranged on the lower end of the moving cross beam 10. The upper end of the second fixed rod 5 is arranged on the inner side of the first pipe clamp 4. The second pipe clamp 6 is fixedly arranged on the lower end of the second fixed rod 5. The third pipe clamp 7 is connected and arranged on the moving cross beam 10, and the third pipe clamp 7 and the first fixed rod 1 are connected and arranged. The photoelectric switch 8 is connected and arranged on the sensor fixed plate 3. The sensor fixed plate 3 and the first fixed rod 1 are connected and arranged to form a whole. The first pipe clamp 4 and the second pipe clamp 6 are connected and fixed with the second fixed rod 5, so that the photoelectric switch 8 line can be arranged.

[0019] Reference Figure 1 And Figure 2 The upper end of the first fixed rod 1 is fixedly clamped through the screw by penetrating the round hole on the third pipe clamp 7. The lower end of the first fixed rod 1 is fixedly clamped through the screw by penetrating the round hole on the sensor fixed plate 3. The first fixed rod 1 is fixedly clamped by the joint screw of the first pipe clamp 4. The lower end of the first fixed rod 1 is fixedly arranged with the sensor fixed plate 3 by the joint screw, so that the photoelectric switch 8 can be conveniently arranged on the first fixed rod 1.

[0020] Reference Figure 3 The outer side of the third pipe clamp 7 is fixedly connected with a fixed seat 12. The inner side of the fixed seat 12 is provided with a fixed bolt 13. The third pipe clamp 7 is fixedly arranged on the outer wall of the moving cross beam 10 by penetrating the fixed seat 12 and the moving cross beam 10 through the fixed bolt 13. The third pipe clamp 7 is conveniently arranged on the moving cross beam 10 by the fixed bolt 13 on the third pipe clamp 7 and the fixed seat 12.

[0021] Reference Figure 1 The photoelectric switch 8 is fixedly arranged on the outer side of the sensor fixed plate 3 by the screw. The photoelectric switch 8 is fixedly arranged on the sensor fixed plate 3 by the screw, so that the photoelectric switch 8 can be conveniently disassembled, maintained or replaced.

[0022] Reference Figure 1, the upper end of the second fixed rod 5 is screwed and clamped through the round hole on the first pipe clamp 4, the first pipe clamp 4 is screwed and fixed on the lower surface of the moving cross beam 10, the lower end of the second fixed rod 5 is screwed and clamped through the round hole on the second pipe clamp 6, the first pipe clamp 4 is installed on the moving cross beam 10, and the second fixed rod 5 with the second pipe clamp 6 is installed on the first pipe clamp 4, so that the line of the photoelectric switch 8 can be conveniently arranged through the second pipe clamp 6.

[0023] Reference Figure 1 and Figure 2 The full-automatic extensometer device 9 is screwed and fixed on the main machine table of the electronic universal testing machine body 11, and the hydraulic clamp 2 is fixed on the main machine of the electronic universal testing machine body 11 in the form of a through pin, the full-automatic extensometer device 9 can be conveniently disassembled, maintained and reassembled by being screwed and fixed on the main machine table of the electronic universal testing machine body 11, and the hydraulic clamp 2 can be conveniently installed and subsequently disassembled and maintained by being fixed on the electronic universal testing machine body 11 in the form of a through pin.

[0024] Principle and advantages: during use, the sensor fixing plate 3 is adjusted to a suitable position, so that the left and right photoelectric switches 8 generate and receive devices are kept on the same path, the influence caused by different paths is reduced, then the full-automatic extensometer device 9 is lifted to the upper end surface of the lower hydraulic clamp 2, the lower cutter head of the full-automatic extensometer device 9 is fixed at a certain distance from the end surface of the hydraulic clamp 2, the electronic universal testing machine body 11 and the full-automatic extensometer device 9 are started, when the main machine moving cross beam 10 moves downward to the upper cutter head to block the light path generated by the photoelectric switch 8, the signal generated by the photoelectric switch 8 is transmitted to the servo control of the main machine, so that the main machine stops running, so as to achieve the purpose of protecting the full-automatic extensometer device 9.

Claims

1. A protection structure of an extensometer, characterized by, The utility model relates to a full-automatic tensile meter device for electronic universal testing machine, including first fixed rod (1), hydraulic clamp (2), sensor fixed plate (3), first pipe clamp (4), second fixed rod (5), second pipe clamp (6), third pipe clamp (7), photoelectric switch (8), full-automatic tensile meter device (9), mobile crossbeam (10), electronic universal testing machine main body (11), mobile crossbeam (10) and hydraulic clamp (2) are all arranged in the inside of electronic universal testing machine main body (11), full-automatic tensile meter device (9) is installed to the outside of electronic universal testing machine main body (11), third pipe clamp (7) is fixedly installed in the outside of mobile crossbeam (10), the upper end of first fixed rod (1) is arranged in the inside of third pipe clamp (7), sensor fixed plate (3) is arranged in the outside of the lower end of first fixed rod (1), photoelectric switch (8) is fixed in the outside of sensor fixed plate (3), first pipe clamp (4) is fixedly installed in the lower end of mobile crossbeam (10), the upper end of second fixed rod (5) is arranged in the inside of first pipe clamp (4), second pipe clamp (6) is fixedly installed in the lower end of second fixed rod (5).

2. A protection structure for an extensometer according to claim 1, characterized in that: The upper end of first fixed rod (1) is fixedly clamped through screw by penetrating the round hole on third pipe clamp (7), and the lower end of first fixed rod (1) is fixedly clamped through screw by penetrating the round hole on sensor fixed plate (3).

3. The protection structure of an extensometer according to claim 1, characterized in that: The outside of third pipe clamp (7) is fixedly connected with fixed seat (12), the inside of fixed seat (12) is provided with fixed bolt (13), and third pipe clamp (7) is fixedly installed by penetrating fixed seat (12) and the outer wall of mobile crossbeam (10) through fixed bolt (13).

4. The protection structure of an extensometer according to claim 1, characterized in that: Photoelectric switch (8) is fixedly installed on the outside of sensor fixed plate (3) through screw.

5. The protective structure for an extensometer according to claim 1, characterized in that: The upper end of second fixed rod (5) is fixedly clamped through screw by penetrating the round hole on first pipe clamp (4), first pipe clamp (4) is fixedly installed at the lower surface of mobile crossbeam (10) through screw, and the lower end of second fixed rod (5) is fixedly clamped through screw by penetrating the round hole on second pipe clamp (6).

6. The protective structure for an extensometer according to claim 1, characterized in that: Full-automatic tensile meter device (9) is fixedly installed on the main machine mesa of electronic universal testing machine main body (11) through screw, and hydraulic clamp (2) is fixed on the main machine of electronic universal testing machine main body (11) in the form of penetrating pin.

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