High-precision two-dimensional automatic calibration table of displacement sensor

Abstract

The utility model discloses a high-precision two-dimensional automatic calibration table of a displacement sensor, which relates to a sensor and comprises a calibration table body, a sliding piece is arranged at the top of the calibration table body, an object block is arranged at the top of the sliding piece, and a driving assembly is arranged in the calibration table body and used for being connected with the sliding piece and driving the sliding piece. An L-shaped frame is arranged at the top of the calibration table body, and a fixing piece is arranged at the top of the L-shaped frame; by opening the two electric push rods, the driving ends of the electric push rods can extend to drive the clamping piece to abut against the displacement sensor body, at the moment, the clamping piece compresses the reset spring to be shortened due to counter-acting force, and then the pressure sensor abuts against the contact block and generates pressure on the pressure sensor. When the pressure in the pressure sensor reaches an internal rated value, the control display screen can close the electric push rod, and at the moment, the displacement sensor main body can be stably positioned while the displacement sensor main body is not damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a high-precision two-dimensional automatic calibration platform for a displacement sensor. Background Art

[0002] Laser displacement sensors are widely used in various industries, such as automobile manufacturing, civil engineering, water conservancy engineering, industrial automation or building bridges. The calibration of displacement sensors is an important task before using them. It is to determine the error relationship between the input and output of the displacement sensor under different conditions of use through experiments. In order to improve efficiency, automatic displacement sensors have emerged.

[0003] However, the existing electric displacement sensors have poor clamping effects. Usually, only two sets of machines are used to clamp the sensor body close to each other. This method is not easy to control the clamping force, which makes it easy to damage the sensor body during actual operation, making it impossible to accurately calibrate and test. For this reason, we designed a high-precision two-dimensional automatic calibration platform for displacement sensors to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a high-precision two-dimensional automatic calibration platform for a displacement sensor to solve the problems raised in the above-mentioned background technology.

[0005] To solve the above technical problems, the utility model provides a high-precision two-dimensional automatic calibration platform for a displacement sensor, comprising a calibration platform body, a slide is arranged on the top of the calibration platform body, a block is arranged on the top of the slide, a driving component is arranged in the calibration platform body for connecting the slide and driving it, an L-shaped frame is arranged on the top of the calibration platform body, a fixing member is arranged on the top of the L-shaped frame, an electric push rod is arranged on one side of the L-shaped frame and the fixing member, a limiting member is arranged on the driving end of the electric push rod, a reset spring is arranged on one side of the limiting member, a clamp is arranged on the other end of the reset spring, a pressure sensor and a contact block are respectively arranged on the opposite sides of the limiting member and the clamp, the pressure sensor abuts against the contact block and is electrically connected to the electric push rod, a displacement sensor body is placed on the top of the L-shaped frame, and the clamp abuts against the displacement sensor body.

[0006] Furthermore, there are two return springs between each of the limit members and the card member, and the two return springs are symmetrically installed on the opposite side of the limit member and the card member. The setting of the two return springs can not only ensure that the card member can rebound normally and be used again conveniently, but also help to improve the stability of the card member during movement.

[0007] Furthermore, a slide groove is provided on the top of the L-shaped frame, and a U-shaped frame is fixedly installed on the bottom of the limit member. A roller is rotatably connected to the U-shaped frame, and the roller is rollingly connected in the slide groove. When the limit member moves, the roller can roll in the slide groove, thereby limiting the sliding direction of the limit member. In addition, the sliding friction of the limit member is changed to rolling friction, which can reduce its friction force, thereby reducing the wear of the limit member.

[0008] Furthermore, the driving assembly includes a fixing groove, which is opened at the top of the calibration platform body, a screw rod is rotatably connected in the fixing groove, a nut is threadedly sleeved on the screw rod, a connecting piece is provided on the top of the nut, the top of the connecting piece is fixedly connected to the bottom of the slide, a motor is installed on one side of the calibration platform body, the driving shaft of the motor is transmission-connected to one end of the screw rod, a ruler is provided on the top of the calibration platform body, a pointer is provided on one side of the slide, and the pointer is against the top of the ruler.

[0009] Furthermore, a guide rod is inserted into the nut, and both ends of the guide rod are fixedly installed in the fixing groove, so that the nut can slide along the direction set by the guide rod, and the nut can be limited, thereby avoiding the problem of nut deviation.

[0010] Furthermore, a display screen is also provided on the top of the calibration platform, and the display screen is electrically connected to the displacement sensor body, the pressure sensor and the motor, so that personnel can actively control the switch and operating status of the displacement sensor body, the pressure sensor and the motor.

[0011] Compared with the prior art, the utility model has the following beneficial effects: by opening the two electric push rods, the driving end of the electric push rod can be extended to drive the card member to abut against the displacement sensor body, at which time the card member will compress the return spring due to the reaction force, and then the pressure sensor will abut against the contact block and generate pressure on the pressure sensor. When the pressure in the pressure sensor reaches the internal rated value, the control display screen can turn off the electric push rod, and at this time, the displacement sensor body can be stably positioned without damaging the displacement sensor body;

[0012] Compared with the prior art, the beneficial effect of the utility model is that by turning on the motor, the screw rod can be rotated, so that the nut drives the connecting piece, the sliding piece and the object to move along the direction set by the guide rod. During this process, the pointer will slide on the scale and it is convenient for personnel to observe the movement distance. Then the displacement sensor body will reflect the distance of the object movement on the display screen, so that the data can be compared, thereby facilitating the calibration and detection of the displacement sensor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the exterior of the nut of the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the exterior of the L-shaped frame of the utility model;

[0016] Figure 4 For this utility model Figure 1 Enlarged view of point A in the middle.

[0017] In the figure: 1. calibration platform; 2. sliding part; 3. object block; 4. L-shaped frame; 5. fixing part; 6. electric push rod; 7. limit part; 8. clamping part; 9. reset spring; 10. pressure sensor; 11. contact block; 12. slide groove; 13. U-shaped frame; 14. roller; 15. fixing groove; 16. screw rod; 17. nut; 18. connecting part; 19. motor; 20. guide rod; 21. display screen; 22. displacement sensor body; 23. ruler; 24. pointer. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 The utility model provides a technical solution: a high-precision two-dimensional automatic calibration platform for a displacement sensor, comprising a calibration platform body 1, a slide 2 is arranged on the top of the calibration platform body 1, a block 3 is arranged on the top of the slide 2, a driving component is arranged in the calibration platform body 1, and is used to connect the slide 2 and drive it, an L-shaped frame 4 is arranged on the top of the calibration platform body 1, a fixing member 5 is arranged on the top of the L-shaped frame 4, an electric push rod 6 is arranged on one side of the L-shaped frame 4 and the fixing member 5, a limiting member 7 is arranged on the driving end of the electric push rod 6, a reset spring 9 is arranged on one side of the limiting member 7, and a clamping member 8 is arranged on the other end of the reset spring 9, a pressure sensor 10 and a contact block 11 are respectively arranged on the opposite sides of the limiting member 7 and the clamping member 8, the pressure sensor 10 is abutted against the contact block 11 and is electrically connected to the electric push rod 6, a displacement sensor body 22 is placed on the top of the L-shaped frame 4, and the clamping member 8 is abutted against the displacement sensor body 22;

[0020] The driving assembly includes a fixing groove 15, which is opened at the top of the calibration platform 1. A screw rod 16 is rotatably connected in the fixing groove 15, and a nut 17 is threadedly sleeved on the screw rod 16. A connecting piece 18 is arranged on the top of the nut 17, and the top of the connecting piece 18 is fixedly connected to the bottom of the slide 2. A motor 19 is installed on one side of the calibration platform 1, and the driving shaft of the motor 19 is transmission-connected to one end of the screw rod 16. A scale 23 is arranged on the top of the calibration platform 1, and a pointer 24 is arranged on one side of the slide 2, and the pointer 24 is against the top of the scale 23. A display screen 21 is also arranged on the top of the calibration platform 1, and the display screen 21 is electrically connected to the displacement sensor body 22, the pressure sensor 10 and the motor 19.

[0021] In the specific implementation, the displacement sensor body 22 is placed on the top of the L-shaped frame 4 and between the two clamps 8, and then the two electric push rods 6 are turned on, so that the driving end of the electric push rod 6 is extended to drive the limiter 7 and the clamp 8 to move toward the displacement sensor body 22 and abut against each other. At this time, the clamp 8 will compress the return spring 9 due to the reaction force, and then the pressure sensor 10 will abut against the contact block 11, so that the contact block 11 generates pressure on the pressure sensor 10. When the pressure in the pressure sensor 10 reaches the internal rated value, the pressure sensor 10 can send an electrical signal to the display screen 21, and the display screen 2 Similarly, an electrical signal is sent to the electric push rod 6 to close it. At this time, the two clamps 8 can stably position the displacement sensor body 22 without damaging it. Then, the motor 19 is turned on to rotate the screw rod 16, so that the nut 17 drives the connecting member 18, the sliding member 2 and the object 3 to move. During this process, the pointer 24 will slide on the scale 23 and facilitate personnel to observe the movement distance. Then, the displacement sensor body 22 will reflect the movement distance of the object 3 on the display screen 21, so that the data can be compared, thereby facilitating the calibration and detection of the displacement sensor body 22.

[0022] See also Figure 1-4 As shown, there are two return springs 9 between each stopper 7 and the clamping member 8, and the two return springs 9 are symmetrically installed on the opposite sides of the stopper 7 and the clamping member 8. The provision of two return springs 9 can ensure that the clamping member 8 can rebound normally, which is convenient for reuse, and can also help improve the stability of the clamping member 8 during movement.

[0023] See also Figure 1-4 A slide groove 12 is provided on the top of the L-shaped frame 4, and a U-shaped frame 13 is fixedly installed on the bottom of the limiting member 7. A roller 14 is rotatably connected to the U-shaped frame 13, and the roller 14 is rollingly connected in the slide groove 12. When the limiting member 7 moves, the roller 14 can roll in the slide groove 12, and the sliding direction of the limiting member 7 can be limited. In addition, the sliding friction of the limiting member 7 is changed to rolling friction, which can reduce its friction force, thereby reducing the wear of the limiting member 7.

[0024] See also Figure 1-4 A guide rod 20 is inserted into the nut 17, and both ends of the guide rod 20 are fixedly installed in the fixing groove 15. The nut 17 can slide along the direction in which the guide rod 20 is set, and the nut 17 can be limited, thereby avoiding the problem of deviation of the nut 17.

[0025] A display screen 21 is also provided on the top of the calibration platform 1, and the display screen 21 is electrically connected to the displacement sensor body 22, the pressure sensor 10 and the motor 19. It is convenient for personnel to actively control the switch and operating state of the displacement sensor body 22, the pressure sensor 10 and the motor 19.

[0026] The pressure sensor 10 is usually provided with a pressure detection chip and circuits inside. When pressure is applied to the pressure sensor 10, the pressure detection chip will display the corresponding pressure value. When the set value is reached, an electrical signal will be sent to the connected electrical appliance. Since the pressure sensor 10 is a prior art, it will not be described in detail in this manual.

[0027] In addition, the displacement sensor body 22 is usually an optical displacement sensor, and its working principle is mainly based on the reflection and refraction characteristics of light. In an optical displacement sensor, a laser or LED is usually used as a light source. When light is emitted to a target object through the sensor, the target object reflects part of the light. The sensor receives the reflected light and converts it into an electrical signal, thereby measuring the distance or position change between the object and the sensor. Since the displacement sensor body 22 is a prior art, it will not be described in detail in this specification.

[0028] Working principle: When in use, firstly, all the electrical appliances involved in the automatic calibration table are connected to an external power supply, and then the displacement sensor body 22 is placed on the top of the L-shaped frame 4 and between the two clamps 8, and then the two electric push rods 6 are turned on, so that the driving end of the electric push rod 6 extends to drive the limiter 7 and the clamp 8 to move toward the displacement sensor body 22 and abut against each other. At this time, the clamp 8 will compress the return spring 9 due to the reaction force, and then the pressure sensor 10 will abut against the contact block 11, so that the contact block 11 generates pressure on the pressure sensor 10. When the pressure in the pressure sensor 10 reaches the internal rated value, the pressure sensor 10 can send an electrical signal to the display screen 21. , and the display screen 21 similarly sends an electrical signal to the electric push rod 6 and turns it off. At this time, the two clamps 8 can stably position the displacement sensor body 22 without damaging the displacement sensor body 22. Then, the motor 19 is turned on to rotate the screw rod 16, so that the nut 17 drives the connecting piece 18, the slide 2 and the object 3 to move along the direction set by the guide rod 20. During this process, the pointer 24 will slide on the scale 23 and it is convenient for personnel to observe the movement distance. Then, the displacement sensor body 22 will reflect the movement distance of the object 3 on the display screen 21, so that the data can be compared, thereby facilitating the calibration and detection of the displacement sensor body 22.

Claims

1. A high-precision two-dimensional automatic calibration platform for a displacement sensor, comprising a calibration platform body (1), a slide (2) is arranged on the top of the calibration platform body (1), a block (3) is arranged on the top of the slide (2), a driving component is arranged inside the calibration platform body (1) for connecting the slide (2) and driving it, an L-shaped frame (4) is arranged on the top of the L-shaped frame (4), a fixing member (5) is arranged on the top of the L-shaped frame (4), an electric push rod (6) is arranged on one side of the L-shaped frame (4) and the fixing member (5), and a limit member (7) is arranged on the driving end of the electric push rod (6), characterized in that: A return spring (9) is provided on one side of the limiting member (7); A clamping member (8) is provided at the other end of the return spring (9); a pressure sensor (10) and a contact block (11) are provided on opposite sides of the limit member (7) and the clamping member (8); the pressure sensor (10) abuts against the contact block (11) and is electrically connected to the electric push rod (6); a displacement sensor body (22) is placed on the top of the L-shaped frame (4); and the clamping member (8) abuts against the displacement sensor body (22).

2. A high-precision two-dimensional automatic calibration platform for displacement sensors as claimed in claim 1, characterized in that: The number of the return springs (9) between each of the limiting member (7) and the clamping member (8) is two, and the two return springs (9) are symmetrically mounted on opposite sides of the limiting member (7) and the clamping member (8).

3. The high-precision two-dimensional automatic calibration platform for displacement sensors according to claim 1, characterized in that: The top of the L-shaped frame (4) is provided with a slide groove (12), the bottom of the limiting member (7) is fixedly mounted with a U-shaped frame (13), the U-shaped frame (13) is rotatably connected to a roller (14), and the roller (14) is rollingly connected in the slide groove (12).

4. The high-precision two-dimensional automatic calibration platform for displacement sensors according to claim 1, characterized in that: The driving assembly comprises a fixing groove (15), wherein the fixing groove (15) is provided at the top of the calibration platform (1), a screw rod (16) is rotatably connected in the fixing groove (15), a nut (17) is threadedly sleeved on the screw rod (16), a connecting piece (18) is provided at the top of the nut (17), the top of the connecting piece (18) is fixedly connected to the bottom of the slide (2), a motor (19) is installed at one side of the calibration platform (1), a driving shaft of the motor (19) is drivingly connected to one end of the screw rod (16), a scale (23) is provided at the top of the calibration platform (1), and a pointer (24) is provided at one side of the slide (2), and the pointer (24) abuts against the top of the scale (23).

5. A high-precision two-dimensional automatic calibration platform for displacement sensors as claimed in claim 4, characterized in that: A guide rod (20) is inserted into the nut (17), and both ends of the guide rod (20) are fixedly mounted in the fixing groove (15).

6. A high-precision two-dimensional automatic calibration platform for displacement sensors as claimed in claim 4, characterized in that: A display screen (21) is also provided on the top of the calibration platform (1); the display screen (21) is electrically connected to the displacement sensor body (22), the pressure sensor (10), and the motor (19).

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