A micro-motion stroke ranging device for high-precision measurement

Abstract

The application discloses a kind of micro motion stroke range finding device for high-precision measurement, it is related to stroke range finding technical field, including bearing shell, the top of bearing shell is equipped with reference loading plate, executive drive plate, reference loading plate is installed with electric signal trigger wiring board, signal processor, the side of reference loading plate is installed with first cross bar, second cross bar, first cross bar is provided with pressure trigger mechanism;The substrate in bearing shell is installed with reference frame, force transmission cooperation mechanism is installed in reference frame, inductive generator, inductive motor are fixedly installed on the outside of bearing shell.The application can ensure the synchronism of trigger action on the one hand, reduce security risks;On the other hand, it can realize the stroke measurement of micron level precision, by setting resistance touch switch and slot photoelectric sensor, so that it jointly constitutes multiple high-precision feedback system, avoids the error of manual reading, ensures the accuracy of micro switch installation position.

Description

Technical Field

[0001] This invention relates to the field of distance measurement technology, and specifically discloses a micro-motion distance measurement device for high-precision measurement. Background Technology

[0002] Combined electrical appliances (GEOs) are small in size and highly reliable, and have been widely used both domestically and internationally as a new type of power conversion equipment. Their mechanism housing contains a large number of microswitches, which are secondary circuit devices used in the operating mechanisms of power equipment such as disconnect switches, switch cabinets, and combined electrical appliance mechanism housings. These microswitches connect contacts through internal return springs and external drive rods, thus controlling circuit switching. Invention CN115597462A discloses a microswitch travel distance measuring device, mainly composed of a measuring tool, a base, a fixed seat, a movable seat, and a support rod. The upper surface of the base is equipped with a fixed seat, a movable seat, and a displacement measuring tool. The fixed seat and movable seat are arranged side-by-side. A support rod with multiple microswitches is mounted on the side of the fixed seat. The movable seat can slide along a slide rail on the base, and the displacement measuring tool measures in a direction parallel to it. Additionally, the device is equipped with a clamping mechanism, including a synchronous plate and a cone, installed in the mounting groove of the fixed seat. The movable seat extension abuts against a crossbar to achieve linkage. When the movable seat approaches, the cone extends to clamp the microswitch, ensuring its stability.

[0003] In the actual installation process of microswitches, the actuation stroke is mainly determined by mechanical measurement. This involves fixing the microswitch individually and then measuring it using tools such as spring scales and vernier calipers, achieving an accuracy of only millimeters. After prolonged operation, microswitches may age and break down, triggering a series of negative consequences, such as poor contact leading to unstable signals, equipment malfunctions, or complete failure. These situations result in economic losses such as production interruptions and increased maintenance costs, and also pose serious safety hazards, potentially causing incorrect equipment start-up and shutdown, or even electrical fires, endangering personal and property safety. Therefore, substation maintenance personnel need to replace a large number of microswitches annually. After replacement, they need to measure the actuation stroke to determine if the microswitch was installed correctly. This installation process relies heavily on mechanical measurements using tools like spring scales and vernier calipers, a method with significant drawbacks. Its measurement accuracy is only at the millimeter level, making it unsuitable for high-precision control requirements. Furthermore, the manual operation process is cumbersome and time-consuming, severely restricting production efficiency. The entire commissioning process also relies on human experience, easily introducing errors that directly affect the reliability of the switch's operation and the overall performance of the equipment. Summary of the Invention

[0004] In view of the high safety hazards and large errors in debugging and measurement accuracy of micro switches in the actual use of combined electrical appliances, the present invention provides a micro travel distance measuring device for high-precision measurement.

[0005] To address the above problems, the present invention provides the following technical solution:

[0006] A micro-motion rangefinder for high-precision measurement includes a carrier housing. A reference loading plate is fixedly mounted on the top of the carrier housing. An execution drive plate that slides with the carrier housing is disposed on the side of the reference loading plate. An electrical signal triggering terminal block and a signal processor are fixedly mounted on the side of the reference loading plate facing away from the execution drive plate. A first crossbar and a second crossbar arranged vertically are fixedly mounted on the side of the reference loading plate facing the execution drive plate. The second crossbar is used to mount a micro switch. A pressure triggering mechanism for triggering the micro switch is disposed on the first crossbar. The pressure triggering mechanism can contact the execution drive plate. The carrier housing is fixedly equipped with... The system comprises a base plate on which a reference frame is fixedly mounted. A force transmission mechanism is installed within the reference frame, comprising a trigger power input terminal, a response power output terminal, and a reset power input terminal. A transverse plate is provided on the side of the reference frame, and the top of the transverse plate is securely mounted to an execution drive plate. The side of the transverse plate is in transmission engagement with the trigger power input terminal of the force transmission mechanism. An induction generator and an induction motor are fixedly mounted on the outside of the supporting housing. The input terminal of the induction generator is in transmission engagement with the response power output terminal of the force transmission mechanism, and the output terminal of the induction motor is in transmission engagement with the reset power input terminal of the force transmission mechanism.

[0007] Preferably, an energy storage battery is fixedly installed at the bottom of the reference loading plate, and the electrical signal triggering terminal block is electrically connected to the energy storage battery, the signal processor, the micro switch, the induction generator, and the induction motor, respectively. An audible and visual buzzer is installed on the electrical signal triggering terminal block.

[0008] Preferably, a resistive touch switch is fixedly installed on the side of the reference loading plate, and the trigger end of the resistive touch switch faces the execution drive plate.

[0009] Preferably, the side of the supporting housing is provided with a mounting groove, in which a first groove-shaped photoelectric sensor and a second groove-shaped photoelectric sensor are fixedly installed. A light-shielding rod is fixedly installed at the bottom of the actuator drive board, and the light-shielding rod can pass through the U-shaped grooves in the first groove-shaped photoelectric sensor and the second groove-shaped photoelectric sensor.

[0010] Preferably, the pressure triggering mechanism includes multiple mounting plates, each mounting plate having a suspension plate hinged to its inner side. The top side of each suspension plate is rotatably engaged with the inner side of the mounting plate. The bottom side of two adjacent suspension plates is jointly mounted with the same trigger post, which can contact the actuator drive plate and the actuator end of the micro switch.

[0011] Preferably, the top of the bearing housing is provided with a sliding groove, the bottom of the actuation drive plate is fixedly installed with a sliding plate that slides in cooperation with the sliding groove, the bottom of the sliding plate is fastened to the top of the transverse plate, the bottom of the sliding plate is fixedly installed with a first pulley base, a first pulley is rotatably installed in the first pulley base, the sliding groove is provided with a through slot to facilitate the passage of the transverse plate and the first pulley base, a vertical plate is fixedly installed inside the bearing housing, the vertical plate is arranged parallel to the transverse plate, and the top of the vertical plate slides in cooperation with the outer wall of the first pulley.

[0012] Preferably, a plurality of second pulley bases are fixedly installed inside the bearing housing, and a second pulley is rotatably installed in each of the second pulley bases. The bottom end of the transverse plate slides in cooperation with the outer wall of the second pulley.

[0013] Preferably, the force transmission mechanism includes a rotating shaft arranged inside and rotating within the reference frame. A circular disk is fixedly fitted around the center of the rotating shaft, serving as the triggering power input end of the force transmission mechanism. A geared disc and a beveled disc are fixedly fitted around the two outer sides of the rotating shaft, respectively, serving as the response power output end and reset power input end of the force transmission mechanism. The beveled disc and the circular disc are respectively connected to the induction generator and the induction motor for transmission.

[0014] Preferably, a strip plate is hinged to the edge of the disc surface of the circular wheel, a transverse rod is hinged to the side of the strip plate, a rod sleeve is fixedly installed inside the reference frame, the outer wall of the transverse rod is slidably fitted with the rod sleeve, a sleeve rod is fixedly installed at the end of the transverse rod, and ear plates are provided on both sides of the bottom of the transverse plate, and the sleeve rod is fastened to the ear plates.

[0015] Preferably, the input end of the induction generator is connected to a bevel gear rod, which meshes with a bevel gear disc for transmission, and the output end of the induction motor is fitted with a circular gear ring, which meshes with the circular gear disc for transmission.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention utilizes a force transmission mechanism and an induction generator to work together. A hinged strip plate and a transverse rod convert the linear motion of the drive plate into rotational motion. When the drive plate is pushed by an external force, the transverse plate slides laterally, causing the transverse rod to move within the rod sleeve. This, in turn, drives the disc to rotate via the strip plate. The rotation of the disc is transmitted to a bevel gear plate via a rotating shaft. The bevel gear plate meshes with the bevel gear rod, driving the rotor of the induction generator to rotate. The frequency and amplitude of the output voltage of the induction generator are proportional to the rotor speed, thus converting mechanical displacement into an electrical signal. This achieves micron-level precision travel measurement. Furthermore, by incorporating a resistive touch switch and a slotted photoelectric sensor, a multi-layered high-precision feedback system is formed, avoiding the manual reading errors of traditional vernier calipers and other tools. This improves measurement accuracy from millimeters to sub-millimeter levels and ensures the accuracy of the microswitch installation position.

[0018] 2. The bearing housing of this invention integrates a base plate, a reference frame, a transverse plate, and multiple pulley support structures. These components provide stable guidance for the sliding of the drive plate, reducing the need for manual adjustment. At the same time, the electrical signal triggering terminal connects the induction motor, induction generator, micro switch, resistive touch switch, slotted photoelectric sensor, audible and visual buzzer, and signal processor into a coordinated control system, powered by an energy storage battery. During installation, substation maintenance personnel can automatically control the movement of the drive plate through the induction motor, eliminating the need for repeated measurements using tools such as spring scales. This invention significantly shortens the debugging time, reducing it from tens of minutes of traditional manual measurement to just a few minutes. It integrates measurement, triggering, and warning functions into one device, reducing manual intervention steps and improving production efficiency. It is particularly suitable for the rapid replacement and calibration of a large number of micro switches in combined electrical appliances.

[0019] 3. This invention, by setting a pressure triggering mechanism, ensures the synchronization of triggering actions by simultaneously contacting the micro switch and the drive plate when the drive plate moves. To avoid malfunctions caused by micro switch aging, the device is additionally equipped with a resistive touch switch and a slotted photoelectric sensor as backups for redundancy verification. Furthermore, the real-time ranging data of the induction generator is compared with the preset value to automatically correct the position and reduce human judgment errors. This design eliminates the drawbacks of relying on experience and trial and error in traditional debugging, ensuring the reliability and consistency of micro switch action, thereby preventing cascading problems such as equipment malfunction and poor contact, and improving the overall safety performance of the combined electrical equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall device structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the load-bearing shell structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the reference loading plate structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the actuator drive board structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation structure of the force transmission and engagement mechanism of the present invention;

[0026] Figure 6 This is a detailed structural diagram of the force transmission and engagement mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the sleeve rod installation structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the second pulley platform mounting structure of the present invention;

[0029] In the diagram: 1. Support housing, 2. Reference loading plate, 3. Actuation drive plate, 4. Electrical signal trigger wiring board, 5. Signal processor, 6. First crossbar, 7. Second crossbar, 8. Pressure triggering mechanism, 801. Mounting plate, 802. Suspension plate, 803. Trigger column, 9. Base plate, 10. Reference frame, 11. Force transmission mechanism, 1101. Rotating shaft, 1102. Circular disc, 1103. Gear disc, 1104. Bevel gear disc, 1105. Strip plate, 1106. Lateral rod, 1107. Rod sleeve seat, 1108. Sleeve 1109. Cylindrical rod, 1110. Bevel gear rod, 12. Gear ring, 13. Transverse plate, 14. Induction generator, 15. Induction motor, 16. Energy storage battery, 17. Sound and light buzzer, 18. Resistive touch switch, 19. Mounting slot, 20. First slot-type photoelectric sensor, 21. Second slot-type photoelectric sensor, 22. Light-shielding rod, 23. Slide rail, 24. First pulley base, 25. First pulley, 26. Through slot, 27. Vertical plate, 28. Second pulley base, 29. Second pulley, 30. Ear plate. Detailed Implementation

[0030] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0031] This specific embodiment provides a micro-motion rangefinder for high-precision measurement, such as... Figures 1-8 As shown, it includes a supporting housing 1, which can be made of insulating material and is fixedly installed in the combined electrical appliance. The supporting housing 1 has a square structure, with a reference loading plate 2 fixedly installed at one end of its top, and an execution drive plate 3 provided at the other end of the top of the supporting housing 1; both the reference loading plate 2 and the execution drive plate 3 are right-angled plate structures, and the bottom of the reference loading plate 2 is fastened to the top of the supporting housing 1.

[0032] The interior of the supporting housing 1 is a hollow structure. A base plate 9 is fixedly installed on the bottom plate inside the supporting housing 1. A reference frame 10 is fixedly installed on the base plate 9. A force transmission and engagement mechanism 11 is installed inside the reference frame 10. The force transmission and engagement mechanism 11 includes a rotating shaft 1101, which is arranged inside the reference frame 10 and rotates with its outer wall. The middle part of the rotating shaft 1101 is arranged inside the reference frame 10, and a circular disk 1102 is fixedly fitted around its periphery. The circular disk 1102 can rotate with the rotating shaft 1101 and is the trigger power input end of the force transmission and engagement mechanism 11. The two sides of the rotating shaft 1101 are respectively arranged on the outer side of the reference frame 10, and a circular gear disk 1103 and a bevel gear disk 1104 are fixedly fitted around its periphery. The bevel gear disk 1104 and the circular gear disk 1103 are the response power output end and the reset power input end of the force transmission and engagement mechanism 11, respectively.

[0033] A strip plate 1105 is hinged to the edge of the disc surface of the circular disk 1102 via a bearing ring and a bearing rod. A transverse rod 1106 is hinged to the end of the strip plate 1105 away from the circular disk 1102 via a bearing ring and a bearing rod. A rod sleeve seat 1107 is fixedly installed inside the reference frame 10. The transverse rod 1106 can pass through the rod sleeve seat 1107 and the outer wall of the transverse rod 1106 slides with the rod sleeve seat 1107, so that the rod sleeve seat 1107 provides a stable sliding support structure for the transverse rod 1106. A sleeve rod 1108 is fixedly installed at the end of the transverse rod 1106 away from the strip plate 1105. The sleeve rod 1108 is connected to a transverse plate 12. The bottom end of the transverse plate 12 is arranged inside the bearing housing 1. Ear plates 30 are provided on both sides of the bottom of the transverse plate 12. The ear plates 30 are fastened to the sleeve rod 1108, so that the transverse rod 1106 can drive the transverse plate 12 to slide laterally.

[0034] Multiple second pulley bases 28 are fixedly installed inside the bearing housing 1. The bottom end of each second pulley base 28 is fastened to the base plate 9. A second pulley 29 is rotatably installed inside each second pulley base 28. The second pulley 29 is arranged at the top of each second pulley base 28. The bottom end of the transverse plate 12 slides with the outer wall of the second pulley 29, so that the second pulley 29 provides a stable support structure for the transverse sliding of the transverse plate 12.

[0035] The top of the supporting housing 1 is provided with a sliding groove 22, and the bottom of the actuator drive plate 3 is fixedly installed with a sliding plate 23. The two side surfaces and the bottom surface of the sliding plate 23 are slidably engaged with the inner wall of the sliding groove 22. The bottom of the sliding plate 23 is tightly connected to the top of the transverse plate 12. Two first pulley seats 24 are fixedly installed at the bottom of the sliding plate 23, and first pulleys 25 are rotatably installed in each of the two first pulley seats 24. Two through slots 26 are opened in the sliding groove 22, which can facilitate the passage of the transverse plate 12 and the first pulley seats 24 respectively. A vertical plate 27 is fixedly installed inside the supporting housing 1. The vertical plate 27 is arranged parallel to the transverse plate 12. The top of the vertical plate 27 is provided with an arc surface, which can slide with the outer wall of the first pulley 25, so that the vertical plate 27 provides a stable support structure for the actuator drive plate 3 to slide in the supporting housing 1.

[0036] The reference loading plate 2 is fixedly mounted with a first crossbar 6 and a second crossbar 7 arranged vertically on the side facing the execution drive plate 3. The second crossbar 7 is used to install a micro switch, and the first crossbar 6 is provided with a pressure triggering mechanism 8 for triggering the micro switch. The pressure triggering mechanism 8 includes three parallel mounting plates 801, all of which are fastened to the first crossbar 6. The inner sides of the three mounting plates 801 are all hinged with suspension plates 802 by pins. The top side of each suspension plate 802 is rotatably engaged with the inner side of the mounting plate 801. The bottom side of two adjacent suspension plates 802 is jointly mounted with the same trigger post 803. The three mounting plates 801 are provided with two trigger posts 803. The two sides of the trigger post 803 can respectively contact the inner side of the execution drive plate 3 and the execution end of the micro switch.

[0037] The reference loading plate 2 is fixedly mounted with a resistive touch switch 17. The trigger end of the resistive touch switch 17 is in the same plane as the side of the trigger post 803 and its end faces the execution drive plate 3. By setting the resistive touch switch 17, its touch and trigger characteristics can be used to accurately obtain the instant when the execution drive plate 3 approaches the resistive touch switch 17.

[0038] In addition, a mounting groove 18 is provided on the side of the supporting housing 1. A first groove-shaped photoelectric sensor 19 and a second groove-shaped photoelectric sensor 20 are fixedly installed in the mounting groove 18. A light-shielding rod 21 is fixedly installed at the bottom of the execution drive plate 3. The light-shielding rod 21 can pass through the U-shaped grooves in the first groove-shaped photoelectric sensor 19 and the second groove-shaped photoelectric sensor 20, thereby facilitating real-time reading of the movement stroke of the execution drive plate 3.

[0039] An induction generator 13 and an induction motor 14 are fixedly installed on the outer side of the supporting housing 1. The input end of the induction generator 13 is connected to a bevel gear 1109, which meshes with a bevel gear disc 1104 to drive the input end of the induction generator 13 to drive the response power output end of the force transmission mechanism 11. A circular gear ring 1110 is fitted onto the output end of the induction motor 14, which meshes with a circular gear disc 1103 to drive the output end of the induction motor 14 to drive the reset power input end of the force transmission mechanism 11.

[0040] An electrical signal triggering terminal block 4 and a signal processor 5 are fixedly installed on the side of the reference loading plate 2 facing away from the execution drive plate 3. An energy storage battery 15 is fixedly installed on the bottom of the reference loading plate 2. The electrical signal triggering terminal block 4 is electrically connected to the energy storage battery 15, the signal processor 5, the micro switch, the induction generator 13, the induction motor 14, the resistive touch switch 17, the first slotted photoelectric sensor 19, and the second slotted photoelectric sensor 20. By setting the energy storage battery 15, the power source for each electrical device in this device can be provided, and the various components are combined into an integrated coordinated control system through the electrical signal triggering terminal block 4. An audible and visual buzzer 16 is installed on the electrical signal triggering terminal block 4 to provide audible and visual warning capabilities for the entire device.

[0041] The working principle of this invention is as follows:

[0042] The housing 1 is fixedly installed in the combined electrical appliance, and the actuator 3 is connected to the knife end of the switching components of the combined electrical appliance. During installation, substation maintenance personnel can control the rotation of the geared disc 1103 via the induction motor 14, causing the actuator drive plate 3 to move on the bearing housing 1, thereby driving the transverse plate 12 to move, further driving the transverse rod 1106 to slide within the rod sleeve seat 1107. With the cooperation of the hinge structure of the strip plate 1105, the disc 1102 generates rotational power, thereby causing the bevel gear disc 1104 to rotate. Under the induction of the induction generator 13, the frequency and amplitude of the output voltage of the induction generator 13 are proportional to the rotor speed, thereby accurately detecting the moving distance of the transverse rod 1106 and the actuator drive plate 3. When the two sides of the trigger post 803 touch the inner side of the actuator drive plate 3 and the actuator end of the micro switch, the audible and visual buzzer 16 can generate a warning signal, causing the substation maintenance personnel to stop moving the actuator drive plate 3, and accurately install the micro switch to the appropriate position based on the combination of predetermined data and on-site signals. During the use of this device, the resistive touch switch 17, the first slot-type photoelectric sensor 19, and the second slot-type photoelectric sensor 20 can assist the micro switch to avoid untimely response due to the aging of the micro switch, thereby eliminating safety hazards.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A micro-motion rangefinder for high-precision measurement, comprising a supporting housing (1), characterized in that, A reference loading plate (2) is fixedly installed on the top of the bearing housing (1). An execution drive plate (3) that slides with the bearing housing (1) is provided on the side of the reference loading plate (2). An electrical signal trigger wiring board (4) and a signal processor (5) are fixedly installed on the side of the reference loading plate (2) facing away from the execution drive plate (3). A first crossbar (6) and a second crossbar (7) arranged vertically are fixedly installed on the side of the reference loading plate (2) facing the execution drive plate (3). The second crossbar (7) is used to install a micro switch. A pressure triggering mechanism (8) for triggering the micro switch is provided on the first crossbar (6). The pressure triggering mechanism (8) can contact the execution drive plate (3). A base plate (9) is fixedly installed inside the bearing housing (1). A series of components are fixedly installed on the base plate (9). A reference frame (10) is provided with a force transmission mechanism (11) installed inside the reference frame (10). The force transmission mechanism (11) is provided with a trigger power input end, a response power output end, and a reset power input end. A transverse plate (12) is provided on the side of the reference frame (10). The top of the transverse plate (12) is fastened to the execution drive plate (3). The side of the transverse plate (12) is driven to cooperate with the trigger power input end of the force transmission mechanism (11). An induction generator (13) and an induction motor (14) are fixedly installed on the outside of the bearing housing (1). The input end of the induction generator (13) is driven to cooperate with the response power output end of the force transmission mechanism (11). The output end of the induction motor (14) is driven to cooperate with the reset power input end of the force transmission mechanism (11). A storage battery (15) is fixedly installed at the bottom of the reference loading plate (2). The electrical signal triggering terminal block (4) is electrically connected to the storage battery (15), the signal processor (5), the micro switch, the induction generator (13), and the induction motor (14). An audio-visual buzzer (16) is installed on the electrical signal triggering terminal block (4). The force transmission mechanism (11) includes a rotating shaft (1101), which is arranged inside the reference frame (10) and rotates with it. A circular disk (1102) is fixedly fitted around the middle part of the rotating shaft (1101). The circular disk (1102) is the trigger power input end of the force transmission mechanism (11). A circular gear disk (1103) and a bevel gear disk (1104) are fixedly fitted around the two sides of the rotating shaft (1101). The bevel gear disk (1104) and the circular gear disk (1103) are the response power output end and the reset power input end of the force transmission mechanism (11), respectively. The bevel gear disk (1104) and the circular gear disk (1103) are respectively connected to the induction generator (13) and the induction motor (14) for transmission.

2. The micro-motion stroke ranging device for high-precision measurement according to claim 1, characterized in that, A resistive touch switch (17) is fixedly installed on the side of the reference loading plate (2), and the trigger end of the resistive touch switch (17) faces the execution drive plate (3).

3. A micro-motion stroke ranging device for high-precision measurement according to claim 1, characterized in that, The side of the supporting housing (1) is provided with a mounting groove (18), in which a first groove-type photoelectric sensor (19) and a second groove-type photoelectric sensor (20) are fixedly installed. A light-shielding rod (21) is fixedly installed at the bottom of the execution drive plate (3), and the light-shielding rod (21) can pass through the U-shaped grooves in the first groove-type photoelectric sensor (19) and the second groove-type photoelectric sensor (20).

4. A micro-motion stroke ranging device for high-precision measurement according to claim 1, characterized in that, The pressure triggering mechanism (8) includes multiple mounting plates (801), and each mounting plate (801) has a suspension plate (802) hinged to its inner side. The top side of each suspension plate (802) is rotatably engaged with the inner side of the mounting plate (801). The bottom side of two adjacent suspension plates (802) is jointly equipped with the same trigger post (803). The trigger post (803) can contact the actuator drive plate (3) and the actuator end of the micro switch.

5. A micro-motion stroke ranging device for high-precision measurement according to claim 1, characterized in that, The top of the bearing housing (1) is provided with a sliding groove (22). The bottom of the drive plate (3) is fixedly installed with a sliding plate (23) that slides in cooperation with the sliding groove (22). The bottom of the sliding plate (23) is fastened to the top of the transverse plate (12). The bottom of the sliding plate (23) is fixedly installed with a first pulley base (24). A first pulley (25) is rotatably installed in the first pulley base (24). The sliding groove (22) is provided with a through slot (26) that facilitates the passage of the transverse plate (12) and the first pulley base (24). A vertical plate (27) is fixedly installed inside the bearing housing (1). The vertical plate (27) is arranged parallel to the transverse plate (12). The top of the vertical plate (27) slides in cooperation with the outer wall of the first pulley (25).

6. A micro-motion stroke ranging device for high-precision measurement according to claim 5, characterized in that, The bearing housing (1) has multiple second pulley bases (28) fixedly installed inside, and each second pulley base (28) has a second pulley (29) rotatably installed inside. The bottom end of the transverse plate (12) slides in cooperation with the outer wall of the second pulley (29).

7. A micro-motion stroke ranging device for high-precision measurement according to claim 1, characterized in that, A strip plate (1105) is hinged to the edge of the disc surface of the circular wheel (1102). A transverse rod (1106) is hinged to the side of the strip plate (1105). A rod sleeve seat (1107) is fixedly installed inside the reference frame (10). The outer wall of the transverse rod (1106) is slidably engaged with the rod sleeve seat (1107). A sleeve rod (1108) is fixedly installed at the end of the transverse rod (1106). Ear plates (30) are provided on both sides of the bottom of the transverse plate (12). The sleeve rod (1108) is fastened to the ear plates (30).

8. A micro-motion stroke ranging device for high-precision measurement according to claim 1, characterized in that, The input end of the induction generator (13) is connected to a bevel gear rod (1109), which meshes with a bevel gear disc (1104) for transmission. The output end of the induction motor (14) is fitted with a circular gear ring (1110), which meshes with a circular gear disc (1103) for transmission.

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