Full-automatic high-precision extensometer calibration instrument

Abstract

The utility model discloses a full-automatic high-precision extensometer calibration instrument, and relates to the technical field of extensometer calibration instruments, in particular to a full-automatic high-precision extensometer calibration instrument, which comprises a bottom plate and a centering rod. According to the full-automatic high-precision extensometer calibration instrument, through the arrangement of a scale rod, a U-shaped plate, a first servo motor, a supporting plate, a pointer rod, a threaded rod, a first threaded ring block, a positioning sliding block, a strip-shaped plate, an electric hydraulic push rod and cavity measuring arms, the full-automatic high-precision extensometer calibration instrument has the effect that the height of the two cavity measuring arms can be conveniently lifted and adjusted; through the cooperation of the threaded rod and the first threaded ring block, the height of the lower cavity measuring arm, the extension or retraction of the movable end of the electric hydraulic push rod and the height of the upper cavity measuring arm can be conveniently adjusted, through the cooperation of the pointer rod and the scale rod, the adjusted height can be conveniently observed, and the purpose of improving the practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of extensometer calibrators, and specifically relates to a fully automatic high-precision extensometer calibrator. Background Art

[0002] An extensometer is an instrument for measuring the linear deformation between two points of a component and other objects, usually consisting of three parts: a sensor, an amplifier, and a recorder. An extensometer calibrator is a purely mechanical high-precision displacement micrometer. It is specifically used for calibrating various extensometers, and is also widely used for the verification of displacement sensors and the corresponding dial indicators and micrometer indicators.

[0003] The existing fully automatic high-precision extensometer calibrator in the prior art is not convenient for adjusting the heights of the upper and lower measuring arms, and has poor practicability. Moreover, the existing fully automatic high-precision extensometer calibrator is not convenient for restricting the position of the centering rod. Now, a fully automatic high-precision extensometer calibrator is invented to solve the above problems. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a fully automatic high-precision extensometer calibrator, which solves the problems put forward in the above background art.

[0006] (2) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A fully automatic high-precision extensometer calibrator includes a bottom plate and a centering rod. A scale rod, a U-shaped plate, a first servo motor, and a support plate are respectively installed on the top of the bottom plate. The output end of the first servo motor is installed with a threaded rod that has the same center of the circle as the output end of the first servo motor. The outer surface of the threaded rod is drivingly connected with a first threaded ring block. Positioning sliders are installed on both side surfaces of the first threaded ring block. A strip-shaped plate is installed on the inner wall of the U-shaped plate. An electric hydraulic push rod is installed on the inner top wall of the support plate. Cavity measuring arms are installed at the movable end of the electric hydraulic push rod and the back of the first threaded ring block. A pointer rod is installed on one side surface of the cavity measuring arm. A second servo motor is installed inside the cavity measuring arm. The output end of the second servo motor is installed with a bidirectional screw rod that has the same center of the circle as the output end of the second servo motor. The outer surface of the bidirectional screw rod is drivingly connected with a second threaded ring block. A connecting rod and a convex slider are respectively installed on the outer surface of the second threaded ring block. A limiting clamp block is installed at the end of the connecting rod away from the second threaded ring block.

[0008] Optionally, a positioning chute with a left-right direction as the depth direction and an up-down direction as the length direction is opened on one side surface of the strip-shaped plate. The end of the positioning slider is located inside the positioning chute, and the positioning slider can slide along the length direction of the positioning chute.

[0009] Optionally, the position of the pointer rod corresponds to the position of the scale rod. There are two cavity measuring arms and two centering rods, and the positions of the two centering rods correspond to each other.

[0010] Optionally, a placement groove with the up-down direction as the depth direction is formed inside the cavity measuring arm. The end of the centering rod is inserted into the inside of the placement groove, and the centering rod abuts against the limit clamping block.

[0011] Optionally, a convex chute with the up-down direction as the depth direction and the front-back direction as the length direction is formed on the inner wall of the cavity measuring arm. The end of the convex slider is located inside the convex chute, and the convex slider can slide along the length direction of the convex chute.

[0012] Optionally, the end of the threaded rod away from the first servo motor is rotatably connected to the inner top wall of the U-shaped plate through a bearing, and the end of the bidirectional screw rod away from the second servo motor is rotatably connected to the inner wall of the cavity measuring arm through a bearing.

[0013] Optionally, the first servo motor, the electro-hydraulic push rod and the second servo motor are all electrically connected to an external power supply through wires.

[0014] The utility model provides a full-automatic high-precision extensometer calibrator, which has the following beneficial effects:

[0015] 1. For this full-automatic high-precision extensometer calibrator, through the settings of the scale rod, U-shaped plate, first servo motor, support plate, pointer rod, threaded rod, first threaded ring block, positioning slider, strip plate, electro-hydraulic push rod and cavity measuring arm, the full-automatic high-precision extensometer calibrator has the effect of conveniently lifting and adjusting the heights of the two cavity measuring arms. Through the cooperation of the threaded rod and the first threaded ring block, it is convenient to adjust the height of the cavity measuring arm located below. When the movable end of the electro-hydraulic push rod extends or retracts, it is convenient to adjust the height of the cavity measuring arm located above. Through the cooperation of the pointer rod and the scale rod, it is convenient to observe the adjusted height, achieving the purpose of improving the practicability.

[0016] 2. For this full-automatic high-precision extensometer calibrator, through the settings of the limit clamping block, second servo motor, bidirectional screw rod, second threaded ring block, connecting rod and convex slider, the full-automatic high-precision extensometer calibrator has the effect of conveniently restricting the position of the centering rod. Through the cooperation of the bidirectional screw rod and the second threaded ring block, it is convenient for the two limit clamping blocks to move synchronously to restrict the position of the centering rod, achieving the purpose of improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 is a three-dimensional rear-view structural diagram of the utility model;

[0019] Figure 3 is a schematic structural diagram of the front view section of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the partial front view section of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the side view section of the present utility model;

[0022] Figure 6 is the present utility model Figure 5 is an enlarged schematic structural diagram of part A in it.

[0023] In the figure: 1, base plate; 2, centering rod; 3, graduated rod; 4, U-shaped plate; 5, first servo motor; 6, support plate; 7, pointer rod; 8, threaded rod; 9, first threaded ring block; 10, positioning slider; 11, strip plate; 12, electro-hydraulic push rod; 13, cavity measuring arm; 14, limit clamping block; 15, second servo motor; 16, bidirectional screw rod; 17, second threaded ring block; 18, connecting rod; 19, convex slider. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Embodiment 1

[0026] Please refer to Figures 1 to 5, the present utility model provides a technical solution: a fully automatic high-precision extensometer calibrator, which includes a bottom plate 1 and a centering rod 2. A scale rod 3, a U-shaped plate 4, a first servo motor 5 and a support plate 6 are respectively installed on the top of the bottom plate 1. The first servo motor 5, an electric hydraulic push rod 12 and a second servo motor 15 are all electrically connected to an external power source through wires. The output end of the first servo motor 5 is installed with a threaded rod 8 whose center of the output end of the first servo motor 5 is the same center of the circle. One end of the threaded rod 8 away from the first servo motor 5 is rotatably connected to the inner top wall of the U-shaped plate 4 through a bearing. One end of the bidirectional screw rod 16 away from the second servo motor 15 is rotatably connected to the inner wall of the cavity measuring arm 13 through a bearing. The outer surface of the threaded rod 8 is drivingly connected with a first threaded ring block 9. Both side surfaces of the first threaded ring block 9 are installed with positioning sliders 10. The inner wall of the U-shaped plate 4 is installed with a strip plate 11. One side surface of the strip plate 11 is provided with a positioning chute with the left-right direction as the depth direction and the up-down direction as the length direction. The end of the positioning slider 10 is located inside the positioning chute, and the positioning slider 10 can slide along the length direction of the positioning chute. The inner top wall of the support plate 6 is installed with an electric hydraulic push rod 12. The movable end of the electric hydraulic push rod 12 and the back of the first threaded ring block 9 are both installed with cavity measuring arms 13. A placement groove with the up-down direction as the depth direction is opened inside the cavity measuring arm 13. The end of the centering rod 2 is inserted into the placement groove, and the centering rod 2 abuts against the limit clamping block 14. A convex chute with the up-down direction as the depth direction and the front-back direction as the length direction is opened on the inner wall of the cavity measuring arm 13. The end of the convex slider 19 is located inside the convex chute, and the convex slider 19 can slide along the length direction of the convex chute.

[0027] During use, when adjusting the height of the two cavity measuring arms 13, the first servo motor 5 drives the threaded rod 8 to rotate. The threaded rod 8 is drivingly connected with the first threaded ring block 9, and the end of the positioning slider 10 is located inside the positioning chute, so that the first threaded ring block 9 drives the positioning slider 10 and the cavity measuring arm 13 located below to move, and the positioning slider 10 slides along the length direction of the positioning chute. The movable end of the electric hydraulic push rod 12 extends or retracts, which is convenient for adjusting the height of the cavity measuring arm 13 located above, and is convenient for adjusting the height of the two cavity measuring arms 13. Through the cooperation of the pointer rod 7 and the scale rod 3, it is convenient to observe the adjusted height and improve the practicability.

[0028] Embodiment 2

[0029] Please refer to Figures 1 to 6The utility model provides a technical solution: a fully automatic high-precision extensometer calibrator, a pointer rod 7 is installed on one side of a cavity measuring arm 13, the position of the pointer rod 7 corresponds to the position of the scale rod 3, there are two cavity measuring arms 13 and two centering rods 2, the positions of the two centering rods 2 correspond, a second servo motor 15 is installed inside the cavity measuring arm 13, a bidirectional screw 16 is installed on the output end of the second servo motor 15 and the axis of the output end of the second servo motor 15 is installed, the outer surface of the bidirectional screw 16 is transmission-connected with a second threaded ring block 17, the outer surface of the second threaded ring block 17 is respectively installed with a connecting rod 18 and a convex slider 19, and a limiting clamp 14 is installed on the end of the connecting rod 18 away from the second threaded ring block 17.

[0030] When in use, to limit the position of the centering rod 2, the end of the centering rod 2 is inserted into the inside of the placement groove, and the second servo motor 15 drives the bidirectional screw 16 to rotate. The bidirectional screw 16 is connected to the second threaded ring block 17 in transmission, and the end of the convex slider 19 is located inside the convex slide groove, so that the second threaded ring block 17 drives the convex slider 19 and the connecting rod 18 to move, so that the convex slider 19 is positioned and moved along the length direction of the convex slide groove, and the two limit clamps 14 move synchronously, which is convenient for the limit clamp 14 to limit the clamping of the centering rod 2, and convenient for limiting the position of the centering rod 2, thereby improving practicality.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic high-precision extensometer calibrator, comprising a bottom plate and a centering rod, characterized in that: On the top of the bottom plate, a scale rod, a U-shaped plate, a first servo motor and a support plate are respectively installed. The output end of the first servo motor is equipped with a threaded rod centered on the same center as the output end of the first servo motor. The outer surface of the threaded rod is drivingly connected with a first threaded ring block. Both side surfaces of the first threaded ring block are equipped with positioning sliders. The inner wall of the U-shaped plate is equipped with a strip plate. The inner top wall of the support plate is equipped with an electric hydraulic push rod. The movable end of the electric hydraulic push rod and the back surface of the first threaded ring block are both equipped with cavity measuring arms. One side surface of the cavity measuring arm is equipped with a pointer rod. The inside of the cavity measuring arm is equipped with a second servo motor. The output end of the second servo motor is equipped with a bidirectional screw centered on the output end of the second servo motor. The outer surface of the bidirectional screw is drivingly connected with a second threaded ring block. The outer surface of the second threaded ring block is respectively equipped with a connecting rod and a convex slider. The end of the connecting rod away from the second threaded ring block is equipped with a limiting clamp block.

2. The full-automatic high-precision extensometer calibrator according to claim 1, wherein: On one side surface of the strip plate, a positioning chute is opened with the left-right direction as the depth direction and the up-down direction as the length direction. The end of the positioning slider is located inside the positioning chute, and the positioning slider can slide along the length direction of the positioning chute.

3. The full-automatic high-precision extensometer calibrator according to claim 1, characterized in that: The position of the pointer rod corresponds to the position of the scale rod. There are two cavity measuring arms and two centering rods, and the positions of the two centering rods correspond to each other.

4. A fully automatic high-precision extensometer calibrator according to claim 1, characterized in that: An accommodation groove is opened inside the cavity measuring arm with the up-down direction as the depth direction. The end of the centering rod is inserted inside the accommodation groove, and the centering rod abuts against the limiting clamp block.

5. The full-automatic high-precision extensometer calibrator according to claim 1, wherein: On the inner wall of the cavity measuring arm, a convex chute is opened with the up-down direction as the depth direction and the front-back direction as the length direction. The end of the convex slider is located inside the convex chute, and the convex slider can slide along the length direction of the convex chute.

6. The full-automatic high-precision extensometer calibrator according to claim 1, characterized in that: The end of the threaded rod away from the first servo motor is rotationally connected to the inner top wall of the U-shaped plate through a bearing. The end of the bidirectional screw away from the second servo motor is rotationally connected to the inner wall of the cavity measuring arm through a bearing.

7. A fully automatic high-precision extensometer calibrator according to claim 1, characterized in that: The first servo motor, the electric hydraulic push rod and the second servo motor are all electrically connected to an external power supply through wires.

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