Extensometer calibrating device

Abstract

The utility model belongs to the technical field of extensometers, and discloses an extensometer calibrating device, which comprises a base, a linear module is mounted above the base, a detection column is arranged on the base, the linear module is fixedly connected with a fixed frame through a sliding table, two fixed plates are arranged below the fixed frame, and the two fixed plates are fixedly connected with the linear module through the sliding table. And two opposite positioning plates are movably connected in the fixed frame. According to the utility model, the extensometer can be directly pushed between the two fixing plates to be fixed, and then the linear module operates to drive the fixing frame to move, so that the extensometer moves from the right side to the left side above the detection column body, and different thicknesses of the detection column body can be detected while the extensometer moves; when the extensometer is moved to the left side of the detection cylinder, the operation of the linear module can be stopped, and then the handle is pulled to directly take down the extensometer, so that a person observes the detected data to judge whether the data is accurate or not.

Description

Technical Field

[0001] The utility model belongs to the technical field of extensometers, in particular to an extensometer calibration device. Background Art

[0002] An extensometer is an instrument for measuring the linear deformation between two points of a component or other object. It is usually composed of three parts: a sensor, an amplifier, and a recorder. The sensor is in direct contact with the component being measured. The distance between the two points being measured on the component is the gauge length. The change in gauge length (elongation or shortening) is the linear deformation. The component deforms, and the sensor deforms along with it, and converts this deformation into mechanical, optical, electrical, acoustic and other information. The amplifier amplifies the tiny signal output by the sensor, and the recorder (or reader) directly displays or automatically records the amplified signal.

[0003] According to the patent number CN215572857U, a calibration device for an extensometer is disclosed, including a detection table, a mounting groove is provided at one end of the top outer wall of the detection table, and a screw rod is rotatably connected to the inner walls on both sides of the mounting groove, a sliding block is rotatably connected to the circumferential outer wall of the screw rod through a thread, and a hydraulic cylinder is installed on the top outer wall of the sliding block, a support column is installed on the top outer wall of the hydraulic cylinder, and a fixing mechanism is provided at one end of the support column; the fixing mechanism includes a fixing block fixed to the outer wall of one end of the support column, and a limiting groove is provided on the outer wall of one end of the fixing block. The utility model can clamp the top of the extensometer on two support frames by providing a fixing mechanism, and quickly fix it with a buffer spring and a limiting rod, thereby improving the fixing efficiency, and the two limiting blocks and the support block sliding on the fixing block can change the distance between the two support frames, thereby improving the scope of use.

[0004] Although the above disclosed device can control the lifting and lowering of the extensometer by a hydraulic cylinder to measure the value obtained by the detection cylinder, since there are multiple circular grooves and detection cylinders, it is necessary to frequently control the lifting and lowering of the hydraulic cylinder during calibration, which further prolongs the calibration time of the extensometer, thereby reducing the calibration efficiency of the extensometer. To this end, we provide an extensometer calibration device to solve the above problems. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides an extensometer calibration device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extensometer calibration device, comprising a base, a linear module is installed above the base, a detection column is arranged on the base, the linear module is fixedly connected to a fixed frame through a slide, two fixed plates are arranged below the fixed frame, two opposite positioning plates are movably connected in the fixed frame, the two positioning plates are fixedly connected to guide columns on one side away from each other, the two fixed plates are fixedly connected to movable plates, and the two movable plates slide in the fixed frame and are respectively mounted on the two guide columns, the two movable plates are fixedly connected to a first compression spring on one side away from each other, and the first compression spring is connected to the inner wall of the fixed frame, the left side of the fixed frame is fixedly connected to a support plate, and the support plate is located between the two fixed plates.

[0007] In the above technical solution, preferably, a limit groove is provided on the base, and the detection column is slidably arranged in the limit groove, an electric push rod is installed at the bottom of the base through a bracket, and the telescopic end of the electric push rod is connected to the detection column.

[0008] In the above technical solution, preferably, the bottom surface of the base is fixedly connected to two opposite guide plates, the bottom surface of the detection column is fixedly connected to two guide rods, and the bottom ends of the two guide rods are respectively penetrated in the two guide plates.

[0009] In the above technical solution, preferably, handles are fixedly connected to the side surfaces of the two fixing plates that are away from each other.

[0010] In the above technical solution, preferably, an installation cavity is opened on one adjacent side of the two fixed plates, and the two installation cavities are located on the right side of the support plate. The inner wall of each installation cavity is slidably provided with a limiting inclined plate and fixedly connected with a plurality of second compression springs, and the limiting inclined plate extends to the outside of the fixed plate, and one end of each of the second compression springs is connected to the surface of the limiting inclined plate.

[0011] In the above technical solution, preferably, two relative adjustment grooves are opened on the upper surface of the fixed frame, each of the positioning plates is fixedly connected with a screw, and the screw extends to the top of the adjustment groove, and the surfaces of the two screws are threaded with positioning blocks, and the positioning blocks are in contact with the upper surface of the fixed frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model can push the extensometer directly between the two fixed plates for fixing through the cooperation setting among the base, the linear module, the detection column, the fixed frame, the fixed plate, the positioning plate, the guide column, the movable plate, the first compression spring and the support plate, and then utilize the operation of the linear module to drive the fixed frame to move, so that the extensometer moves from the top of the detection column from the right to the left. While the extensometer moves, different thicknesses on the detection column can be detected, and there is no need to frequently perform repetitive calibration on the detection column. When the extensometer moves to the left side of the detection column, the operation of the linear module can be stopped, and then the extensometer can be directly removed by pulling the handle, so that the personnel can observe the detected data to determine whether it is accurate, and then the extensometer to be calibrated is fixed by the two fixed plates, and the operation of the linear module can be reused to slide the extensometer from the left to the right on the detection column for subsequent calibration, which is more convenient to operate, effectively reduces the calibration time of the extensometer, and improves the calibration efficiency of the extensometer.

[0014] 2. The utility model can directly push the extensometer between the two fixed plates through the matching setting between the installation cavity, the limiting inclined plate and the second compression spring. At this time, the extensometer will squeeze the two limiting inclined plates to slide into the corresponding installation cavity, thereby ensuring that the extensometer can be normally located between the two fixed plates. When the fixed plate is away from the limiting inclined plate, the limiting inclined plate can be popped out under the elastic force of the second compression spring and has a limiting effect on the extensometer, thereby preventing the extensometer from tilting, thereby saving the time of installing the extensometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0017] Figure 3 It is a side partial cross-sectional view of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the fixing plate of the utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the fixing plate of the utility model;

[0020] Figure 6 For this utility model Figure 3 A magnified schematic diagram of the structure in the middle.

[0021] In the figure: 1. base; 2. linear module; 3. detection column; 4. electric push rod; 5. limit groove; 6. fixed frame; 7. fixed plate; 8. handle; 9. guide rod; 10. guide plate; 11. moving plate; 12. limit inclined plate; 13. installation cavity; 14. second compression spring; 15. positioning plate; 16. screw; 17. adjustment groove; 18. guide column; 19. first compression spring; 20. support plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 6As shown, the utility model provides an extensometer calibration device, including a base 1, a linear module 2 is installed above the base 1, the linear module 2 is connected to the base 1 through brackets on both sides, the linear module 2 is an existing mature technology and is not described in detail here, a detection column 3 is arranged on the base 1, the left and right ends of the detection column 3 are arranged opposite to each other, and the thickness of the detection column 3 in the length direction is different, so that the extensometer can be calibrated according to the different thickness changes of the detection column 3, thereby ensuring the accuracy of the calibration result, the linear module 2 is fixedly connected to the fixed frame 6 through the slide, so that the fixed frame 6 can move together through the operation of the linear module 2, thereby moving left and right above the detection column 3, and the fixed frame 6 Two fixing plates 7 are arranged at the bottom, and the two fixing plates 7 are used to clamp and fix the extensometer. Two relative positioning plates 15 are movably connected in the fixing frame 6, and the spacing between the two positioning plates 15 is adjustable, so it is convenient to position and fix the extensometers of different sizes, so as to facilitate the extensometer to be directly placed between the two fixing plates 7 for positioning. The two positioning plates 15 are fixedly connected with guide columns 18 on the side away from each other, and the two fixing plates 7 are fixedly connected with movable plates 11, and the two movable plates 11 are slid in the fixing frame 6 and are respectively sleeved on the two guide columns 18, so that the fixing plate 7 can stably slide in the fixing frame 6 through the movable plates 11, and the two movable plates 11 are fixedly connected with the side away from each other. A first compression spring 19 is connected, and the first compression spring 19 is connected to the inner wall of the fixed frame 6. Through the setting of the first compression spring 19, the two fixed plates 7 can clamp the extensometer to prevent the extensometer from slipping between the two fixed plates 7. A support plate 20 is fixedly connected to the left side of the fixed frame 6, and the support plate 20 is located between the two fixed plates 7. Through the setting of the support plate 20, the extensometer can be supported, thereby ensuring the stability of the extensometer and also limiting the extensometer. Through the setting of the above structure, it is only necessary to fix the extensometer between the two fixed plates 7, and then use the operation of the linear module 2 to drive the fixed frame 6 to move, and further drive the extensometer in the test. The extensometer slides on the measuring cylinder 3. Since the measuring cylinder 3 has different thicknesses, the extensometer can be calibrated more conveniently. When the extensometer is moved to the left side of the measuring cylinder 3 by the operation of the linear module 2, the fixing plate 7 can be pulled to remove the extensometer and observe the detection data. Then, the new extensometer to be calibrated is fixed by the two fixing plates 7, and the operation of the linear module 2 can be reused to slide the extensometer to the right on the measuring cylinder 3 for subsequent calibration. The operation is more convenient and the calibration steps of the extensometer are also simpler. The machinery, parts and equipment in the device all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0024] like Figure 2 and Figure 3As shown, a limiting groove 5 is provided on the base 1, and the detection column 3 is slidably set in the limiting groove 5. An electric push rod 4 is installed at the bottom of the base 1 through a bracket, and the telescopic end of the electric push rod 4 is connected to the detection column 3. Through the setting of the above structure, the detection column 3 has a height adjustment effect, so that it is suitable for extensometers of different lengths, thereby improving the practicability of the device.

[0025] like Figure 2 As shown, the bottom surface of the base 1 is fixedly connected to two opposite guide plates 10, the bottom surface of the detection column 3 is fixedly connected to two guide rods 9, and the bottom ends of the two guide rods 9 are respectively penetrated and arranged in the two guide plates 10. Through the arrangement of the above structure, the stability of the detection column 3 is guaranteed and the detection column 3 is prevented from tilting.

[0026] like Figures 1 to 6 As shown, the two fixing plates 7 are fixedly connected with handles 8 on the side away from each other. The setting of the handles 8 can facilitate personnel to pull the fixing plates 7 to move, thereby releasing the fixation of the extensometer and facilitating its removal.

[0027] like Figure 5 As shown, an installation cavity 13 is provided on one side adjacent to the two fixing plates 7, and the two installation cavities 13 are both located on the right side of the support plate 20. A limiting inclined plate 12 and a plurality of second compression springs 14 are slidably provided on the inner wall of each installation cavity 13, and the limiting inclined plate 12 extends to the outside of the fixing plate 7, and one end of each second compression spring 14 is connected to the surface of the limiting inclined plate 12. With the arrangement of the above structure, when a person fixes the extensometer between the two fixing plates 7, there is no need for the person to pull the fixing plate 7 to move, and the extensometer can be directly pushed between the two fixing plates 7. At this time, the extensometer will squeeze the two limiting inclined plates 12 to slide into the corresponding installation cavity 13, thereby ensuring that the extensometer can be normally located between the two fixing plates 7. When the fixing plate 7 is away from the limiting inclined plate 12, the limiting inclined plate 12 can be popped out under the elastic force of the second compression spring 14 and has a limiting effect on the extensometer, thereby avoiding the extensometer from tilting, thereby saving the time for installing the extensometer.

[0028] like Figure 6 As shown, two opposite adjustment grooves 17 are provided on the upper surface of the fixed frame 6, a screw 16 is fixedly connected to each positioning plate 15, and the screw 16 extends to the top of the adjustment groove 17, and positioning blocks are threadedly sleeved on the surfaces of the two screws 16, and the positioning blocks are in contact with the upper surface of the fixed frame 6. Through the arrangement of the above structure, the position of the positioning plate 15 can be easily adjusted, so that it is convenient to fix extensometers of different sizes, and the elastic force of the first compression spring 19 can make the movable plate 11 always contact with the positioning plate 15, so that the two fixed plates 7 can automatically clamp and fix the extensometer.

[0029] The working principle and use process of the utility model are as follows: when calibrating the extensometer, first, the extensometer is directly pushed between the two fixed plates 7 for fixing, and the support plate 20 supports the extensometer and can also limit its position, and then the operation of the linear module 2 is used to drive the fixed frame 6 to move, so that the extensometer moves from the top of the detection column 3 from the right to the left, and the extensometer can detect different thicknesses on the detection column 3 while moving, and there is no need to frequently perform repetitive calibration on the detection column 3. When the extensometer moves to the left side of the detection column 3, the operation of the linear module 2 can be stopped, and then the handle 8 can be pulled to directly remove the extensometer, so that the personnel can observe the detected data to determine whether it is accurate, and then the extensometer to be calibrated is fixed by the two fixed plates 7, and the operation of the linear module 2 can be reused to slide the extensometer from the left to the right on the detection column 3 for subsequent calibration, which is more convenient to operate and improves the calibration efficiency of the extensometer.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Contents not described in detail in the specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extensometer calibration device, comprising a base (1), characterized in that: A linear module (2) is installed above the base (1), and a detection column (3) is arranged on the base (1). The linear module (2) is fixedly connected to a fixed frame (6) through a slide, and two fixed plates (7) are arranged below the fixed frame (6). Two opposite positioning plates (15) are movably connected in the fixed frame (6), and the two positioning plates (15) are fixedly connected to a guide column (18) on the side away from each other. A movable plate (11) is fixedly connected to the two fixed plates (7), and the two movable plates (11) slide in the fixed frame (6) and are respectively sleeved on the two guide columns (18). The two movable plates (11) are fixedly connected to a first compression spring (19) on the side away from each other, and the first compression spring (19) is connected to the inner wall of the fixed frame (6). A support plate (20) is fixedly connected to the left side of the fixed frame (6), and the support plate (20) is located between the two fixed plates (7).

2. The extensometer calibration device according to claim 1, characterized in that: The base (1) is provided with a limit groove (5), and the detection column (3) is slidably arranged in the limit groove (5); an electric push rod (4) is installed at the bottom of the base (1) through a bracket, and the telescopic end of the electric push rod (4) is connected to the detection column (3).

3. An extensometer calibration device according to claim 2, characterized in that: The bottom surface of the base (1) is fixedly connected to two opposite guide plates (10), the bottom surface of the detection column (3) is fixedly connected to two guide rods (9), and the bottom ends of the two guide rods (9) are respectively penetrated and arranged in the two guide plates (10).

4. The extensometer calibration device according to claim 1, characterized in that: A handle (8) is fixedly connected to the side surfaces of the two fixing plates (7) that are away from each other.

5. The extensometer calibration device according to claim 1, characterized in that: An installation cavity (13) is provided on one adjacent side of the two fixing plates (7), and the two installation cavities (13) are both located on the right side of the support plate (20). The inner wall of each installation cavity (13) is slidably provided with a limiting inclined plate (12) and is fixedly connected with a plurality of second compression springs (14), and the limiting inclined plate (12) extends to the outside of the fixing plate (7), and one end of each of the second compression springs (14) is connected to the surface of the limiting inclined plate (12).

6. The extensometer calibration device according to claim 1, characterized in that: The upper surface of the fixed frame (6) is provided with two opposite adjustment grooves (17), each of the positioning plates (15) is fixedly connected with a screw rod (16), and the screw rod (16) extends to the top of the adjustment groove (17), and the surfaces of the two screw rods (16) are threadedly sleeved with positioning blocks, and the positioning blocks are in contact with the upper surface of the fixed frame (6).

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