Automatic calibration device for linear displacement sensor

Abstract

The invention relates to the field of displacement sensors, and particularly discloses an automatic calibration device for a linear displacement sensor, which comprises a working table, a moving assembly is arranged on the working table, and a standard measuring assembly for measuring a target distance is arranged on the moving assembly; the workbench is provided with a bearing assembly used for bearing a displacement sensor, clamping assemblies are arranged on the workbench and located on the two sides of the bearing assembly, and the bearing assembly is communicated with the clamping assemblies. When the linear displacement sensor is maintained and calibrated, when the reading of the displacement sensor is too large or too small, automatic reading of an error value of the displacement sensor can be realized, a calibration result can be rapidly obtained, a standard measurement assembly does not need to be compared with the displacement sensor, and thus rapid calibration of the displacement sensor is realized. The comparison time is saved, the calibration efficiency of the device on the displacement sensor is improved, and the maintenance and calibration of the displacement sensor are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of displacement sensors, and in particular to an automatic calibration device for a linear displacement sensor. Background Art

[0002] A linear displacement sensor is a device used to measure the position change of an object moving in a straight line. The sensor can convert mechanical displacement into an electrical signal output. It is widely used in industrial automation, robotics, precision instruments, automobile manufacturing and other fields to monitor or control parameters such as position, length, and thickness. The linear displacement sensor automatic calibration device is designed to improve calibration efficiency and accuracy. It can automatically complete the calibration process of the linear displacement sensor, reduce human errors, and ensure measurement consistency and reliability.

[0003] In the existing patent CN203908525U, an automatic calibration device for a linear displacement sensor is disclosed, which mainly includes a base, a double linear guide rail, a grating ruler, a servo motor, and a vertical lifting device are fixed on the base; the roller screw is connected to the servo motor through a coupling; the horizontal adjustment device, the universal clamp, and the locking nut are snapped together and connected to the vertical lifting device; the sliding laser reflector support frame, the sliding laser interferometer support frame, and the sliding dual-frequency laser interferometer support frame are fixed on the linear guide rail, wherein the fixed pull rod, the laser reflector, and the grating ruler reading sensor are fixed on the sliding reflector support frame, the laser interferometer is fixed on the sliding interferometer support frame, and the dual-frequency laser interferometer is fixed on the sliding dual-frequency laser interferometer support frame. Through the setting of the laser calibration mechanism, the calibration accuracy can be guaranteed, which greatly saves labor and time costs and improves the calibration work efficiency.

[0004] In the above structure, calibration can be performed by laser. However, when the linear displacement sensor is repaired, since the reading of the linear displacement sensor cannot be accurately read, it can only be calibrated by means of the equipment first, and then the parts of the displacement sensor can be replaced. During the repair process, it is difficult to quickly and accurately judge whether the reading of the displacement sensor is too large or too small, and the automatic reading of the displacement sensor cannot be achieved, that is, the calibration result cannot be automatically obtained. It is necessary to compare the standard instrument with the displacement sensor, which wastes comparison time, reduces the efficiency of the device in calibrating the displacement sensor, and is not conducive to the repair and calibration of the displacement sensor.

[0005] Therefore, how to provide an automatic calibration device for a linear displacement sensor is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0006] An object of the present invention is to provide an automatic calibration device for a linear displacement sensor. The automatic calibration device for a linear displacement sensor described in the present invention comprises a workbench, a moving component is arranged on the workbench, and a standard measuring component for measuring a target distance is arranged on the moving component;

[0007] The workbench is provided with a load-bearing component for bearing a displacement sensor, the workbench is provided with clamping components on both sides of the load-bearing component, the load-bearing component is connected to the clamping component, and the moving component is provided with a fine-tuning component connected to the load-bearing component;

[0008] The fine adjustment component is provided with a reading component for automatically obtaining a calibration difference, the reading component is provided with a transmission component adapted to the reading component, a measuring head of a displacement sensor is connected to an end of the transmission component, and a contact component is provided between the reading component and the transmission component;

[0009] An inflatable component is arranged on the workbench, and the inflatable component inflates the load-bearing component, the clamping component and the fine-tuning component so as to calibrate different displacement sensors.

[0010] Preferably, the displacement assembly includes a motor mounted on the workbench, and the workbench is connected to bearings with symmetrically arranged threaded rods, one of the threaded rods is connected to the output shaft of the motor, and pulleys are fixedly sleeved on two threaded rods, and the two pulleys are connected by belt transmission, and sliding blocks are threadedly connected to the threaded rods, and the two threaded rods respectively thread through the sliding blocks.

[0011] Preferably, the standard measuring component comprises a standard pointer arranged on the sliding block, and a standard ruler matched with the standard pointer is arranged on the workbench along the length direction of the workbench.

[0012] Preferably, the load-bearing component includes a load-bearing cylinder arranged on one side of the workbench, a load-bearing piston is arranged in the load-bearing cylinder, a load-bearing rod is arranged on the load-bearing piston and passes through the load-bearing cylinder, a load-bearing plate is arranged on the load-bearing rod, and a load-bearing spring is arranged between the load-bearing plate and the load-bearing cylinder and is sleeved on the load-bearing rod.

[0013] Preferably, the clamping assembly includes a fixed plate arranged on the workbench, a clamping cylinder is arranged on the fixed plate, a clamping piston is arranged in the clamping cylinder, a clamping rod penetrating the clamping cylinder is arranged on the clamping piston, a clamping plate is arranged on the clamping rod, a clamping spring sleeved on the outer ring of the clamping rod is arranged between the clamping plate and the clamping cylinder, a pressure relief valve is installed on the clamping cylinder, a conduit 1 is arranged between the clamping cylinder and the load-bearing cylinder, and an electromagnetic valve 1 is installed on the conduit 1.

[0014] Preferably, the fine-tuning assembly includes a fine-tuning cylinder arranged in the sliding block, a fine-tuning piston is arranged in the fine-tuning cylinder, a fine-tuning rod penetrating the fine-tuning cylinder is arranged on the fine-tuning piston, a fine-tuning block is arranged on the fine-tuning rod, a fine-tuning spring sleeved on the outer ring of the fine-tuning rod is arranged between the fine-tuning block and the fine-tuning cylinder, a second conduit is arranged between the fine-tuning cylinder and the load-bearing cylinder, and a second solenoid valve is arranged on the second conduit.

[0015] Preferably, the reading component includes a connecting tube arranged on the fine-tuning block, an electromagnet is arranged in the connecting tube, a reading rod passing through the connecting tube is arranged on the electromagnet, a numerical value is provided on the reading rod, and a reading spring is arranged between the electromagnet and the inner wall of the connecting tube and is sleeved on the outer ring of the reading rod.

[0016] Preferably, the transmission assembly includes a connecting rod arranged inside the connecting cylinder, the connecting rod passes through the connecting cylinder, a magnet block compatible with the electromagnet is arranged at the end of the connecting rod, a connecting head is arranged at the end of the connecting rod, a measuring head of the displacement sensor is installed on the connecting head, and a transmission spring is arranged between the magnet block and the inner wall of the connecting cylinder and is sleeved on the outer ring of the connecting rod.

[0017] Preferably, the contact assembly includes a support rod arranged on the magnet block, the support rod is provided with an electrical connection head connected to the electromagnet, the connecting tube is provided with an electrical connection board adapted to the electrical connection head, and the electrical connection board is electrically connected to the power supply.

[0018] Preferably, the inflation assembly includes an inflation pump installed on the workbench, an inflation pipe is provided at the output end of the inflation pump, a plurality of control joints are provided on the inflation pipe, and the control joints are respectively connected to the load-bearing cylinder, the conduit one and the conduit two.

[0019] The beneficial effects of the present invention are as follows:

[0020] When the displacement sensor is repaired and calibrated, the load-bearing component, the clamping component and the fine-tuning component are in a balanced state, and the displacement sensor of the same model is placed on the load-bearing component. Since the load-bearing component is connected with the clamping component and the fine-tuning component, the clamping component just clamps the displacement sensor at this time, and the fine-tuning component adjusts the reading component and the transmission component to a reasonable height until the measuring head, the transmission component and the reading component of the displacement sensor are in a horizontal straight line state. The measuring head of the displacement sensor is installed on the transmission component, and the displacement sensor and the moving component are synchronously started at this time. The moving component forces the fine-tuning component, the reading component, the contact component and the transmission component to move to the calibration position, that is, the marked position of the standard measuring component. At this time, the measuring head of the displacement sensor will also drive the transmission component to move, so the transmission component and the reading component will have a relative displacement relationship; when the moving component moves to the marked position of the standard measuring component, if the displacement sensor exceeds the standard distance, the transmission component moves too fast relative to the reading component. Under the transmission action of the transmission component, the displacement sensor will eventually push the reading component to have a relative displacement, and the contact component is always in a separated state. The displacement sensor exceeding the standard distance can be read by checking the reading component. Accurate value; if the displacement sensor is less than the standard distance, the transmission component moves too slowly relative to the reading component, and the transmission component and the reading component are separated. When separated, due to the contact effect of the contact component, the reading component is forced to move toward the transmission component and connect to form a whole, that is, the reading component will retract. At this time, the displacement sensor finally drives the reading component and the transmission component to move synchronously. When the moving component moves to the marked position of the standard measuring component, the accurate value of the displacement sensor less than the standard distance can be read by checking the reading component; the staff modifies the parameters of the displacement sensor to a reasonable value according to the situation, and updates the display function of the displacement sensor to complete the purpose of automatic reading and rapid calibration of the displacement sensor; in summary, an automatic calibration device for a linear displacement sensor of the present application can realize automatic reading of the error value of the displacement sensor when the reading of the displacement sensor is too large or too small during the maintenance and calibration of the linear displacement sensor, and can quickly obtain the calibration result without comparing the standard measuring component with the displacement sensor, thereby realizing rapid calibration of the displacement sensor, saving comparison time, improving the efficiency of the device in calibrating the displacement sensor, and facilitating the maintenance and calibration of the displacement sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional structure entity diagram of the present invention;

[0023] Figure 2It is a physical diagram of the internal structure of the present invention;

[0024] Figure 3 A structural entity diagram of the mobile assembly of the present invention;

[0025] Figure 4 It is a partial structural entity diagram of the present invention;

[0026] Figure 5 It is a structural entity diagram of the load-bearing assembly of the present invention;

[0027] Figure 6 It is a structural entity diagram of the clamping assembly of the present invention;

[0028] Figure 7 A structural entity diagram of the fine-tuning assembly of the present invention;

[0029] Figure 8 It is a position relationship diagram of the reading component and the transmission component of the present invention;

[0030] Fig. 9 A structural entity diagram of the reading component of the present invention;

[0031] Fig.10 It is a structural entity diagram of the transmission assembly of the present invention.

[0032] In the figure: 1. workbench; 2. moving assembly; 201. motor; 202. threaded rod; 203. pulley; 204. belt; 205. sliding block; 3. standard measuring assembly; 301. standard pointer; 302. standard ruler; 4. load-bearing assembly; 401. load-bearing cylinder; 402. load-bearing piston; 403. load-bearing rod; 404. load-bearing plate; 405. load-bearing spring; 5. clamping assembly; 501. fixed plate; 502. clamping cylinder; 503. clamping piston; 504. clamping rod; 505. clamping plate; 506. clamping spring; 507. pressure relief valve; 508. conduit 1; 509. solenoid valve 1; 6 , fine-tuning assembly; 601, fine-tuning cylinder; 602, fine-tuning piston; 603, fine-tuning rod; 604, fine-tuning block; 605, fine-tuning spring; 606, catheter two; 607, solenoid valve two; 7, reading assembly; 701, connecting tube; 702, electromagnet; 703, reading rod; 704, reading spring; 8, transmission assembly; 801, connecting rod; 802, magnet block; 803, connector; 804, transmission spring; 9, contact assembly; 901, support rod; 902, electrical connector; 903, electrical board; 10, inflation assembly; 1001, inflation pump; 1002, inflation tube; 1003, control connector. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] Embodiment 1:

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, an automatic calibration device for a linear displacement sensor of the present invention comprises a workbench 1, a moving component 2 is arranged on the workbench 1, and a standard measuring component 3 for measuring a target distance is arranged on the moving component 2;

[0036] The workbench 1 is provided with a load-bearing component 4 for bearing a displacement sensor, the workbench 1 is provided with clamping components 5 on both sides of the load-bearing component 4, the load-bearing component 4 is connected to the clamping component 5, and the moving component 2 is provided with a fine-tuning component 6 connected to the load-bearing component 4;

[0037] The fine adjustment component 6 is provided with a reading component 7 for automatically obtaining a calibration difference, the reading component 7 is provided with a transmission component 8 adapted to the reading component 7, the measuring head of the displacement sensor is connected to the end of the transmission component 8, and a contact component 9 is provided between the reading component 7 and the transmission component 8;

[0038] An inflatable component 10 is provided on the workbench 1, and the inflatable component 10 inflates the load-bearing component 4, the clamping component 5 and the fine-tuning component 6 so as to calibrate different displacement sensors.

[0039] Working principle: When repairing and calibrating the displacement sensor, make the load-bearing component 4, the clamping component 5 and the fine-tuning component 6 in a balanced state, and place the displacement sensor of the same model on the load-bearing component 4. Since the load-bearing component 4 is connected with the clamping component 5 and the fine-tuning component 6, the clamping component 5 just clamps the displacement sensor at this time, and the fine-tuning component 6 adjusts the reading component 7 and the transmission component 8 to a reasonable height until the measuring head of the displacement sensor, the transmission component 8 and the reading component 7 are in a horizontal straight line state. The measuring head of the displacement sensor is installed on the transmission component 8. At this time, the displacement sensor and the moving component 2 are started synchronously, and the moving component 2 forces the micro-adjusting component 2 to move. The adjustment component 6, the reading component 7, the contact component 9 and the transmission component 8 move to the calibration position, that is, the marked position of the standard measurement component 3. At this time, the measuring head of the displacement sensor will also drive the transmission component 8 to move, so the transmission component 8 and the reading component 7 will have a relative displacement relationship; when the moving component 2 moves to the marked position of the standard measurement component 3, if the displacement sensor exceeds the standard distance, at this time, the transmission component 8 moves too fast relative to the reading component 7. Under the transmission action of the transmission component 8, the displacement sensor will eventually push the reading component 7 to have a relative displacement. At the same time, the contact component 9 is always in a separated state. The displacement sensor can be read by checking the reading component 7. The accurate value of the displacement sensor exceeding the standard distance; if the displacement sensor is less than the standard distance, the transmission component 8 moves too slowly relative to the reading component 7, and the transmission component 8 and the reading component 7 are separated. When separated, due to the contact effect of the contact component 9, the reading component 7 is forced to move toward the transmission component 8 and connect to form a whole, that is, the reading component 7 will retract. At this time, the displacement sensor finally drives the reading component 7 and the transmission component 8 to move synchronously. When the moving component 2 moves to the marked position of the standard measuring component 3, the accurate value of the displacement sensor less than the standard distance can be read by checking the reading component 7; the staff adjusts the displacement sensor according to the situation. The parameters of the sensor are modified to reasonable values, and the display function of the displacement sensor is updated, so as to complete the purpose of automatic reading and rapid calibration of the displacement sensor; in summary, an automatic calibration device for a linear displacement sensor of the present application can realize automatic reading of the error value of the displacement sensor when the reading of the displacement sensor is too large or too small during maintenance and calibration of the linear displacement sensor, and can quickly obtain the calibration result without comparing the standard measurement component 3 with the displacement sensor, thereby realizing rapid calibration of the displacement sensor, saving comparison time, improving the efficiency of the device in calibrating the displacement sensor, and facilitating the maintenance and calibration of the displacement sensor.

[0040] Embodiment 2:

[0041] like Figure 1 , Figure 2 and Figure 3As shown, an automatic calibration device for a linear displacement sensor of the present invention, the displacement component includes a motor 201 installed on a workbench 1, and a bearing on the workbench 1 is connected to symmetrically arranged threaded rods 202, one of the threaded rods 202 is connected to the output shaft of the motor 201, and pulleys 203 are fixedly sleeved on the two threaded rods 202, and the two pulleys 203 are connected through a belt 204 for transmission, and a sliding block 205 is threadedly connected to the threaded rod 202, and the two threaded rods 202 respectively thread through the sliding block 205.

[0042] like Figure 1 and Figure 2 As shown, in an automatic calibration device for a linear displacement sensor of the present invention, the standard measurement component 3 includes a standard pointer 301 arranged on a sliding block 205 , and a standard ruler 302 adapted to the standard pointer 301 is arranged on the workbench 1 along the length direction of the workbench 1 .

[0043] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, an automatic calibration device for a linear displacement sensor of the present invention, the load-bearing component 4 includes a load-bearing cylinder 401 arranged on one side of a workbench 1, a load-bearing piston 402 is arranged in the load-bearing cylinder 401, a load-bearing rod 403 penetrating the load-bearing cylinder 401 is arranged on the load-bearing piston 402, a load-bearing plate 404 is arranged on the load-bearing rod 403, and a load-bearing spring 405 mounted on the load-bearing rod 403 is arranged between the load-bearing plate 404 and the load-bearing cylinder 401.

[0044] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, an automatic calibration device for a linear displacement sensor of the present invention, the clamping assembly 5 includes a fixed plate 501 arranged on a workbench 1, a clamping cylinder 502 is arranged on the fixed plate 501, a clamping piston 503 is arranged in the clamping cylinder 502, a clamping rod 504 penetrating the clamping cylinder 502 is arranged on the clamping piston 503, a clamping plate 505 is arranged on the clamping rod 504, a clamping spring 506 sleeved on the outer ring of the clamping rod 504 is arranged between the clamping plate 505 and the clamping cylinder 502, a pressure relief valve 507 is installed on the clamping cylinder 502, a conduit 508 is arranged between the clamping cylinder 502 and the load-bearing cylinder 401, and a solenoid valve 509 is installed on the conduit 508.

[0045] like Figure 4 and Figure 7As shown, an automatic calibration device for a linear displacement sensor of the present invention, the fine-tuning component 6 includes a fine-tuning cylinder 601 arranged in a sliding block 205, a fine-tuning piston 602 is arranged in the fine-tuning cylinder 601, a fine-tuning rod 603 penetrating the fine-tuning cylinder 601 is arranged on the fine-tuning piston 602, a fine-tuning block 604 is arranged on the fine-tuning rod 603, a fine-tuning spring 605 sleeved on the outer ring of the fine-tuning rod 603 is arranged between the fine-tuning block 604 and the fine-tuning cylinder 601, a conduit 2 606 is arranged between the fine-tuning cylinder 601 and the load-bearing cylinder 401, and a solenoid valve 2 607 is arranged on the conduit 2 606.

[0046] like Figure 4 , Figure 8 and Fig. 9 As shown, an automatic calibration device for a linear displacement sensor of the present invention, the reading component 7 includes a connecting tube 701 arranged on a fine-tuning block 604, an electromagnet 702 is arranged in the connecting tube 701, a reading rod 703 penetrating the connecting tube 701 is arranged on the electromagnet 702, a numerical value is set on the reading rod 703, and a reading spring 704 is arranged between the electromagnet 702 and the inner wall of the connecting tube 701 and is sleeved on the outer ring of the reading rod 703.

[0047] like Figure 8 and Fig.10 As shown, an automatic calibration device for a linear displacement sensor of the present invention, the transmission assembly 8 includes a connecting rod 801 arranged inside a connecting cylinder 701, the connecting rod 801 passes through the connecting cylinder 701, a magnet block 802 adapted to the electromagnet 702 is arranged at the end of the connecting rod 801, a connecting head 803 is arranged at the end of the connecting rod 801, a measuring head of the displacement sensor is mounted on the connecting head 803, and a transmission spring 804 sleeved on the outer ring of the connecting rod 801 is arranged between the magnet block 802 and the inner wall of the connecting cylinder 701.

[0048] like Figure 4 , Figure 8 and Fig.10 As shown, an automatic calibration device for a linear displacement sensor of the present invention, the contact component 9 includes a support rod 901 arranged on a magnet block 802, the support rod 901 is provided with an electrical connection head 902 connected to the electromagnet 702, the connecting tube 701 is provided with an electrical connection board 903 adapted to the electrical connection head 902, and the electrical connection board 903 is electrically connected to a power supply.

[0049] like Figure 4 As shown, an automatic calibration device for a linear displacement sensor of the present invention, the inflation component 10 includes an inflation pump 1001 installed on a workbench 1, an inflation tube 1002 is provided at the output end of the inflation pump 1001, and a plurality of control joints 1003 are provided on the inflation tube 1002, and the control joints 1003 are respectively connected to the load-bearing cylinder 401, the conduit 1 508 and the conduit 2 606.

[0050] Working principle: When repairing and calibrating the displacement sensor, place the displacement sensor of the same model on the load-bearing plate 404. The load-bearing plate 404 is subjected to gravity, so that the load-bearing plate 404 drives the load-bearing rod 403 to move downward, and the load-bearing rod 403 drives the load-bearing spring 405 to compress, forcing the gas in the load-bearing cylinder 401 to compress, opening the solenoid valve 1 509 and the solenoid valve 2 607, forcing the gas in the load-bearing cylinder 401 to enter the clamping cylinder 502 and the fine-tuning cylinder 601, thereby increasing the gas in the clamping cylinder 502 and the fine-tuning cylinder 601, and the clamping piston 503 drives the clamping rod 504 to move, so that the clamping rod 505 04 extends out, the clamping rod 504 drives the clamping plate 505 to move, so that the clamping plate 505 clamps the displacement sensor, at this time the clamping spring 506 is compressed, and at the same time the fine-tuning piston 602 drives the fine-tuning rod 603 to move, forcing the fine-tuning rod 603 to drive the fine-tuning block 604 to move to a reasonable height, the fine-tuning spring 605 is compressed, at this time the clamping plate 505 just clamps the displacement sensor, and the fine-tuning block 604 adjusts the reading component 7 and the transmission component 8 to a reasonable height, until the measuring head of the displacement sensor, the transmission component 8 and the reading component 7 are in the same horizontal straight line state, and the measuring head of the displacement sensor is installed on the connector 803;

[0051] When calibrating displacement sensors of different models, the air pump 1001 is started, and the gas pressure in the load-bearing cylinder 401, the clamping cylinder 502 and the fine-tuning cylinder 601 is adjusted under the connection of the air pipe 1002 and the control joint 1003, so that when the displacement sensor is clamped, the measuring head, the transmission component 8 and the reading component 7 of the displacement sensor can be in the same horizontal straight line state, thereby achieving the purpose of automatic reading and calibration of displacement sensors of different models;

[0052] The displacement sensor and the motor 201 are started synchronously. The output shaft of the motor 201 rotates to drive one of the threaded rods 202 to rotate. Under the transmission action of the pulley 203 and the belt 204, the two threaded rods 202 rotate, and the two threaded rods 202 drive the sliding block 205 to move. The sliding block 205 drives the fine adjustment component 6, the reading component 7, the contact component 9 and the transmission component 8 to move to the calibration position. At the same time, the sliding block 205 drives the standard pointer 301 to move to the target position of the standard ruler 302, that is, the marking position. At this time, the measuring head of the displacement sensor also drives the transmission component 8 to move, so the transmission component 8 and the reading component 7 will have a relative displacement relationship;

[0053] When the sliding block 205 moves to the marked position of the standard pointer 301, if the displacement sensor exceeds the standard distance, the magnet block 802 moves too fast relative to the electromagnet 702, and the displacement sensor will eventually drive the connector 803 to move, the connector 803 drives the connecting rod 801 to move, and the connecting rod 801 drives the magnet stone to move. At this time, the transmission spring 804 is stretched, so that the magnet stone always pushes the electromagnet 702 to move, and the electromagnet 702 drives the reading rod 703 to move. At this time, the reading spring 704 is compressed, and the reading rod 703 extends out of the connecting tube 701, and the electrical connector 902 is finally separated from the electrical connector 903. By checking the value on the reading rod 703, the accurate value of the displacement sensor exceeding the standard distance can be automatically read, and this value is the value that the displacement sensor needs to be calibrated.

[0054] If the displacement sensor is less than the standard distance, the magnet block 802 moves too slowly relative to the electromagnet 702. If the electromagnet 702 is not powered, the magnet block 802 and the electromagnet 702 will separate. Due to the setting of the electrical head 902 and the electrical board 903, when separated, the magnet block 802 will drive the support rod 901 to move, and the support rod 901 will drive the electrical head 902 to move, forcing the electrical head 902 to contact the electrical board 903 to connect the circuit. Since the electromagnet 702 is electrically connected to the electrical head 902, the electromagnet 702 is forced to be powered on, forming an attraction to the magnet stone. At this time, the measuring head of the displacement sensor is installed The connecting head 803 is moved to force the magnet block 802 not to move relative to the magnet block 802. At this time, the electromagnet 702 will be close to the magnet block 802 and fit closely with the magnet block 802 to form a whole. The reading rod 703 moves with the electromagnet 702. At this time, the reading spring 704 is stretched, and the reading rod 703 is retracted into the connecting tube 701. Finally, the displacement sensor drives the magnet stone and the electromagnet 702 to move synchronously. When the sliding block 205 moves to the marked position of the standard pointer 301, the value of the reading rod 703 is checked, and the accurate value of the displacement sensor that is less than the standard distance can be read. This value is the value that the displacement sensor needs to be calibrated.

[0055] The staff directly modifies the parameters of the displacement sensor to reasonable values ​​according to the value of the reading rod 703, and updates the display function of the displacement sensor, completing the maintenance and calibration of the displacement sensor, and achieving the effect of automatic reading and rapid calibration of the displacement sensor.

[0056] The setting of the displacement component can provide power, so that the device moves to different positions, can provide multiple sets of measurement data, calibrate different distances of the displacement sensor, and improve the calibration accuracy of the displacement sensor; the standard measurement component 3 can provide a basis for measurement, can move the device to a reasonable length, is conducive to the calibration of different distances of the displacement sensor, and improves the measurement accuracy of the calibration; the setting of the load-bearing component 4 can realize the load-bearing capacity of the displacement sensor, is conducive to adjusting the height of the displacement sensor, ensures that the displacement sensor and the device are at the same horizontal position, improves the accuracy of measurement and calibration, and can also act on the clamping component 5 and the fine-tuning component 6, which is conducive to the maintenance and calibration of the displacement sensor of the same model; the setting of the clamping component 5 can realize the clamping effect of the displacement sensor, improve the stability of the displacement sensor, and avoid the phenomenon that the displacement sensor is displaced and the calibration is not accurate; the setting of the fine-tuning component 6 can realize the adjustment of the height of the transmission component 8 and the reading component 7, so as to achieve the purpose of measuring the displacement sensor. And ensure that the measuring head of the displacement sensor and the transmission component 8 are on the same horizontal line, thereby improving the accuracy of calibration; the setting of the reading component 7 can read the calibration value intuitively, without the need to compare the standard ruler 302 with the displacement sensor, thereby realizing rapid calibration of the displacement sensor, saving comparison time, and improving the efficiency of the device for calibrating the displacement sensor; the setting of the transmission component 8 realizes the acquisition of the displacement of the displacement sensor and realizes the action of the reading component 7, thereby realizing the rapid response of the reading component 7 and quickly obtaining the calibration value; the setting of the contact component 9 can realize the switching of two calibration conditions, and when the displacement sensor exceeds or is less than the accurate value of the standard distance, the function of automatic reading of the calibration value can be realized; the setting of the inflation component 10 realizes different degrees of inflation of the load-bearing cylinder 401, the clamping cylinder 502 and the fine-tuning cylinder 601, thereby realizing the calibration of displacement sensors of different models and improving the calibration function of different displacement sensors.

[0057] On the one hand, this solution can realize the calibration of different linear displacement sensors; on the other hand, it can realize the automatic reading of the calibrated value; when the linear displacement sensor is repaired and calibrated, when the reading of the displacement sensor is too large or too small, the automatic reading of the error value of the displacement sensor can be realized, and the calibration result can be obtained quickly without comparing the standard ruler 302 with the displacement sensor, thereby realizing rapid calibration of the displacement sensor, saving comparison time, improving the efficiency of the device in calibrating the displacement sensor, and facilitating the repair and calibration of the displacement sensor.

[0058] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic calibration device for a linear displacement sensor, characterized in that: It comprises a workbench (1), on which a moving component (2) is arranged, and on which a standard measuring component (3) for measuring a target distance is arranged; The workbench (1) is provided with a load-bearing component (4) for bearing a load-displacement sensor, the workbench (1) is provided with clamping components (5) on both sides of the load-bearing component (4), the load-bearing component (4) is connected to the clamping components (5), and the moving component (2) is provided with a fine-tuning component (6) connected to the load-bearing component (4); The fine adjustment component (6) is provided with a reading component (7) for automatically obtaining a calibration difference, the reading component (7) is provided with a transmission component (8) adapted to the reading component (7), a measuring head of a displacement sensor is connected to an end of the transmission component (8), and a contact component (9) is provided between the reading component (7) and the transmission component (8); An inflatable component (10) is arranged on the workbench (1), and the inflatable component (10) inflates the load-bearing component (4), the clamping component (5) and the fine-tuning component (6) so as to calibrate different displacement sensors.

2. The automatic calibration device for a linear displacement sensor according to claim 1, characterized in that: The moving assembly (2) comprises a motor (201) mounted on the workbench (1); a bearing on the workbench (1) is connected to symmetrically arranged threaded rods (202); one of the threaded rods (202) is connected to the output shaft of the motor (201); a pulley (203) is fixedly sleeved on both threaded rods (202); the two pulleys (203) are connected to each other by a belt (204); a sliding block (205) is threadedly connected to the threaded rod (202); and the two threaded rods (202) respectively thread through the sliding block (205).

3. The automatic calibration device for a linear displacement sensor according to claim 2, characterized in that: The standard measuring component (3) comprises a standard pointer (301) arranged on the sliding block (205), and a standard ruler (302) adapted to the standard pointer (301) is arranged on the workbench (1) along the length direction of the workbench (1).

4. The automatic calibration device for a linear displacement sensor according to claim 3, characterized in that: The load-bearing component (4) comprises a load-bearing cylinder (401) arranged on one side of the workbench (1), a load-bearing piston (402) being arranged in the load-bearing cylinder (401), a load-bearing rod (403) penetrating the load-bearing cylinder (401) being arranged on the load-bearing piston (402), a load-bearing plate (404) being arranged on the load-bearing rod (403), and a load-bearing spring (405) sleeved on the load-bearing rod (403) being arranged between the load-bearing plate (404) and the load-bearing cylinder (401).

5. The automatic calibration device for a linear displacement sensor according to claim 4, characterized in that: The clamping assembly (5) comprises a fixing plate (501) arranged on the workbench (1), a clamping cylinder (502) being arranged on the fixing plate (501), a clamping piston (503) being arranged in the clamping cylinder (502), a clamping rod (504) penetrating the clamping cylinder (502) being arranged on the clamping piston (503), a clamping plate (505) being arranged on the clamping rod (504), a clamping spring (506) sleeved on the outer ring of the clamping rod (504) being arranged between the clamping plate (505) and the clamping cylinder (502), a pressure relief valve (507) being installed on the clamping cylinder (502), a conduit one (508) being arranged between the clamping cylinder (502) and the load-bearing cylinder (401), and a solenoid valve one (509) being installed on the conduit one (508).

6. The automatic calibration device for a linear displacement sensor according to claim 5, characterized in that: The fine-tuning assembly (6) comprises a fine-tuning cylinder (601) arranged in the sliding block (205), a fine-tuning piston (602) arranged in the fine-tuning cylinder (601), a fine-tuning rod (603) penetrating the fine-tuning cylinder (601) arranged on the fine-tuning piston (602), a fine-tuning block (604) arranged on the fine-tuning rod (603), a fine-tuning spring (605) sleeved on the outer ring of the fine-tuning rod (603) arranged between the fine-tuning block (604) and the fine-tuning cylinder (601), a second conduit (606) arranged between the fine-tuning cylinder (601) and the load-bearing cylinder (401), and a second solenoid valve (607) arranged on the second conduit (606).

7. The automatic calibration device for a linear displacement sensor according to claim 6, characterized in that: The reading component (7) comprises a connecting tube (701) arranged on the fine-tuning block (604), an electromagnet (702) being arranged inside the connecting tube (701), a reading rod (703) penetrating the connecting tube (701) being arranged on the electromagnet (702), a numerical value being arranged on the reading rod (703), and a reading spring (704) being arranged between the electromagnet (702) and the inner wall of the connecting tube (701) and being sleeved on the outer ring of the reading rod (703).

8. The automatic calibration device for a linear displacement sensor according to claim 7, characterized in that: The transmission assembly (8) comprises a connecting rod (801) arranged inside the connecting tube (701), the connecting rod (801) passing through the connecting tube (701), a magnet block (802) matched with the electromagnet (702) being arranged at the end of the connecting rod (801), a connecting head (803) being arranged at the end of the connecting rod (801), a measuring head of a displacement sensor being mounted on the connecting head (803), and a transmission spring (804) sleeved on the outer ring of the connecting rod (801) being arranged between the magnet block (802) and the inner wall of the connecting tube (701).

9. The automatic calibration device for a linear displacement sensor according to claim 8, characterized in that: The contact assembly (9) comprises a support rod (901) arranged on the magnet block (802), the support rod (901) being provided with an electrical connection head (902) connected to the electromagnet (702), the connection tube (701) being provided with an electrical connection board (903) adapted to the electrical connection head (902), and the electrical connection board (903) being electrically connected to a power source.

10. The automatic calibration device for a linear displacement sensor according to claim 9, characterized in that: The inflation component (10) comprises an inflation pump (1001) installed on the workbench (1), the output end of the inflation pump (1001) is provided with an inflation tube (1002), the inflation tube (1002) is provided with a plurality of control joints (1003), and the control joints (1003) are respectively connected to the load-bearing cylinder (401), the conduit 1 (508) and the conduit 2 (606).

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