A single-line distributed multi-point displacement meter

Abstract

This invention relates to the field of distributed multi-point displacement meter technology and discloses a single-line distributed multi-point displacement meter, including a sensor. A mounting plate is fixedly connected to the side wall of the sensor, and a waveguide is fixedly connected to the side wall of the mounting plate. This invention utilizes the roughness of the drilled hole to set an inclined contact plate inside the device. After the slide rail is inserted to a sufficient position, the operator pulls out the mounting rod in the opposite direction. Since the inner wall of the hole is mechanically drilled and relatively rough, the inclined contact plate will force the sliding plate two to slide along the inner wall of the slide rail. Since the outer wall of the support frame is inclined, the spring two is gradually compressed and deformed, accumulating mechanical power. When the sliding plate two reaches the position of the sliding groove two, the spring two will release the accumulated mechanical power. During this process, the pressure application component is connected to the snap fastener component and the snap fastener of the slot through the placement component contact snap fastener component, reducing the difficulty of the initial installation of the device.

Description

Technical Field

[0001] This invention relates to the field of distributed multi-point displacement meter technology, specifically a single-line distributed multi-point displacement meter. Background Technology

[0002] Magnetic displacement sensors include single-wire multi-point displacement gauges. The principle of a single-wire multi-point displacement gauge is to generate a strain pulse signal by the intersection of two different magnetic fields to accurately measure the position. When the sensor generates a signal and flows inside the waveguide, the signal generates a circumferential magnetic field outside the waveguide. When this magnetic field passes through the magnetic field generated by the permanent magnet ring, a strain mechanical wave is generated inside the waveguide due to the magnetic expansion and contraction, and then returns to the inside of the sensor to complete the detection. Such devices are often installed inside deep holes that are long and small in diameter.

[0003] When installing a single-line multi-point displacement meter, it is often necessary to install permanent magnet rings at different locations in a deep hole to reflect the magnetic signal of the displacement meter. However, due to the small diameter of the hole, the installation of the permanent magnet rings will increase the difficulty of installation. Moreover, since it is impossible to manually operate the installation inside the hole, the permanent magnet rings will loosen after long-term use, causing data errors. To address the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a single-line distributed multi-point displacement meter, including a sensor, a mounting plate fixedly connected to the side wall of the sensor, and a waveguide fixedly connected to the side wall of the mounting plate.

[0005] The installation mechanism is used to deliver the subsequent mechanism to the required location in the deep hole;

[0006] The latching mechanism is located on the outer wall of the mounting mechanism and is used to detach from the mounting mechanism after reaching the required height to complete the installation.

[0007] The pressure mechanism is fixedly installed on the outer wall of the locking mechanism to provide conditions for the locking mechanism to disengage;

[0008] Before use, the locking mechanism is first placed on the outer wall of the installation mechanism and then moved to the required position. Then, the installation mechanism is pulled back so that the pressure mechanism is locked on the inner wall of the locking mechanism, thus completing the installation of the equipment.

[0009] Preferably, the installation mechanism includes:

[0010] Mounting components, including a handle, with a mounting rod fixedly connected to the side wall of the handle;

[0011] The component is placed in contact with the outer wall of the mounting rod via a slider;

[0012] The sliding component includes a support frame that slides in contact with the outer wall of the mounting rod, and a slide rail is provided on the outer wall of the support frame;

[0013] Before use, insert the through hole in the center of the support frame into the mounting rod and slide it to the required height.

[0014] Preferably, the latching mechanism includes:

[0015] The drive assembly is fixedly connected to the side wall of the support frame;

[0016] Because the diameter of the inner wall of the support frame is larger than the diameter of the mounting rod, and the diameter of the mounting rod is larger than the diameter of the waveguide, there is a gap between the outer wall of the waveguide, the permanent magnet, and the support frame after the equipment is fully installed. The waveguide and the permanent magnet are in a non-contact state, so that when the waveguide transmits magnetic signals, the magnetic signals will not be disturbed by contact with the hard material of the outer wall, thus avoiding data errors during the transmission and return of magnetic signals.

[0017] The snap-fit ​​assembly is fixedly connected to the inner wall of the support frame;

[0018] The drive assembly forces the latching assembly to lock onto the outer wall of the mounting rod, ensuring that the latching and pressure mechanisms do not slip due to minor internal resistance after the worker inserts the mounting rod, latching mechanism, and pressure mechanism into the hole using the handle.

[0019] Preferably, the pressure mechanism includes:

[0020] The pressure application component is slidably connected to the outer wall of the slide rail;

[0021] The contact component is fixedly connected to the top of the pressure application component;

[0022] In this configuration, when the pressure mechanism is inserted into the hole, the top of the contact component is always in contact with the inner wall of the hole.

[0023] Preferably, the mounting assembly also includes a slot formed on the outer wall of the mounting rod;

[0024] When the worker inserts the buckling mechanism into the end of the mounting rod away from the handle, the buckling assembly will lock into the inner wall of the slot, restricting the movement of the buckling mechanism.

[0025] Preferably, the placement component includes a sliding groove 1 formed on the outer wall of the support frame, a sliding plate 1 slidably connected to the inner wall of the sliding groove 1, and a sliding groove 2 formed on the top of the sliding plate 1.

[0026] In this design, the sidewall of the sliding groove 2 is in communication with the sidewall of the slide rail. When the pressure mechanism reaches the position of the sliding groove 2 due to resistance, the sliding plate 1 is under pressure and will slide downward along the inner wall of the sliding groove 1.

[0027] Preferably, the drive assembly includes a permanent magnet fixedly connected to the side wall of the support frame, a push rod fixedly connected to the bottom of the sliding plate, a spring fixedly connected to the inner wall of the sliding groove, and the other end of the spring fixedly connected to the bottom of the sliding plate.

[0028] During the use of the equipment, the spring always generates an outward pushing pressure, forcing the sliding plate to be flush with the outer wall of the support frame.

[0029] Preferably, the buckle assembly includes a fixing rod fixedly connected to the inner wall of the support frame, a rotating plate rotatably connected to the outer wall of the fixing rod, a torsion spring fixedly connected to the inner wall of the rotating plate, and the other end of the torsion spring fixedly connected to the outer wall of the fixing rod.

[0030] When the sliding plate slides along the inner wall of the sliding groove, the sliding plate will drive the push rod to move synchronously and squeeze the rotating plate to rotate around the fixed rod.

[0031] Preferably, the pressure application component includes a sliding plate two slidably connected to the outer wall of the slide rail, a telescopic rod fixedly connected to the outer wall of the sliding plate two, a mounting plate two fixedly connected to the end of the telescopic rod away from the sliding plate two, and a spring two fixedly connected to the outer wall of the telescopic rod.

[0032] When sliding plate two reaches the position of sliding groove one, due to the increased thickness of the support frame, the mechanical force generated by spring two will force the inclined contact plate to be in a tight fit with the inner wall of the hole, causing spring two to... Figure 3 The state of G in the middle becomes Figure 7 The F-shaped structure increases the contact surface of the equipment, improving its stability after installation.

[0033] After the staff delivers the pressure mechanism to the designated position, they pull the mounting rod back. At this point, the contact component will provide thrust to the pressure component, forcing the sliding plate two to slide along the inner wall of the slide rail.

[0034] Preferably, the contact assembly includes a fixing frame fixedly connected to the top of the mounting plate two, an inclined contact plate rotatably connected to the inner wall of the fixing frame, and a torsion spring two fixedly connected to the inner wall of the inclined contact plate.

[0035] After the slide rail is inserted to a sufficient position, the staff pulls out the installation rod in the opposite direction. Since the inner wall of the hole is mechanically drilled and the inner wall is relatively rough, the inclined contact plate will force the sliding plate two to slide along the inner wall of the slide rail. During this process, the pressure component is connected to the buckle component and the slot by the buckle of the placement component contact buckle component, reducing the difficulty of the initial installation of the equipment.

[0036] The second torsion spring will force the inclined contact plate to always be in an upward tilted state, so that whether it is going deep into the hole or being pulled back later, the end of the inclined contact plate will always be in contact with the inner wall of the hole.

[0037] The inclined contact plate is designed with a large angle of inclination and a sharp tail. This reduces the resistance as the inclined contact plate moves deeper into the hole. When the inclined contact plate is under tension, the sharp tail will get stuck on the rough inner wall of the hole. The angle of force will also increase the resistance to the outward movement of the inclined contact plate, ensuring that the inclined contact plate has enough pressure to force the sliding plate two to slide along the inner wall of the slide rail.

[0038] The present invention has the following beneficial effects:

[0039] (1) This invention utilizes the roughness of the borehole interior and sets up an inclined contact plate inside the equipment. After the slide rail is inserted to a sufficient position, the operator pulls out the installation rod in the opposite direction. Since the inner wall of the hole is mechanically drilled and the inner wall is relatively rough, the inclined contact plate will force the sliding plate two to slide along the inner wall of the slide rail. In this process, the pressure component is connected to the buckle component and the slot by the buckle of the placement component contact buckle component, which reduces the difficulty of the initial installation of the equipment.

[0040] (2) After the above-mentioned equipment is completed, since the diameter of the inner wall of the support frame is larger than the diameter of the mounting rod, and the diameter of the mounting rod is larger than the diameter of the waveguide, there is a gap between the outer wall of the waveguide and the permanent magnet and the support frame after the equipment is fully installed. The waveguide and the permanent magnet are in a non-contact state, so that when the waveguide transmits magnetic signals, the magnetic signals will not be disturbed by the contact of the hard material of the outer wall, thus avoiding data errors when transmitting and returning magnetic signals.

[0041] (3) The present invention adopts an inclined contact plate with an inclined design, which makes the inclined contact plate tilted at a large angle and with a sharp tail after entering the hole. This reduces the resistance encountered by the inclined contact plate as it goes deeper into the hole. When the inclined contact plate is under tension, the sharp tail will get stuck on the rough inner wall of the hole. The angle of force will increase the resistance of the inclined contact plate moving outward, ensuring that the inclined contact plate has enough pressure to force the sliding plate two to slide along the inner wall of the slide rail.

[0042] (4) When the sliding plate two reaches the position of the sliding groove one, due to the increase in the thickness of the support frame, the mechanical force generated by the spring two will force the inclined contact plate to be in a tight fit with the inner wall of the hole, so that the spring two can move from the sliding groove one to the sliding groove two. Figure 3 The state of G in the middle becomes Figure 7 The F-shaped structure increases the contact surface of the equipment, improving its stability after installation. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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.

[0044] Figure 1 This is an exploded view of the overall structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the overall structure and working state of the present invention;

[0046] Figure 3 This is a cross-sectional view of the component placement diagram of the present invention;

[0047] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0048] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle;

[0049] Figure 6 This is a schematic diagram of the tilted contact plate in operation according to the present invention;

[0050] Figure 7 This is a schematic diagram of the working state of the pressure mechanism of the present invention;

[0051] Figure 8 This is a schematic diagram of the overall structure and working state of the present invention.

[0052] The attached diagram lists the components represented by each number as follows:

[0053] In the diagram: 1. Mounting mechanism; 11. Mounting component; 12. Placement component; 13. Sensor; 14. Mounting plate one; 15. Waveguide; 111. Handle; 112. Mounting rod; 113. Slot; 121. Support frame; 122. Slide rail; 123. Sliding groove one; 124. Sliding plate one; 125. Sliding groove two; 2. Snapping mechanism; 21. Drive component; 22. Snapping component; 211. Permanent magnet; 212. Push rod; 213. Spring one; 221. Fixed rod; 222. Rotating plate; 223. Torsion spring one; 3. Pressure mechanism; 31. Pressure application component; 32. Contact component; 311. Sliding plate two; 312. Telescopic rod; 313. Mounting plate two; 314. Spring two; 321. Fixed frame; 322. Inclined contact plate; 323. Torsion spring two. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] For example 1, please refer to Figure 1 - Figure 5 The present invention is a single-line distributed multi-point displacement meter, including a sensor 13, a mounting plate 14 fixedly connected to the side wall of the sensor 13, and a waveguide 15 fixedly connected to the side wall of the mounting plate 14.

[0056] Installation mechanism 1 is used to deliver the subsequent mechanism to the required position in the deep hole;

[0057] The latching mechanism 2 is located on the outer wall of the mounting mechanism 1 and is used to disengage from the mounting mechanism 1 after reaching the required height to complete the installation.

[0058] Pressure mechanism 3 is fixedly installed on the outer wall of the buckling mechanism 2, providing conditions for the buckling mechanism 2 to disengage;

[0059] Before use, the buckling mechanism 2 is first placed on the outer wall of the installation mechanism 1 and then moved to the required position. Then, the installation mechanism 1 is pulled back so that the pressure mechanism 3 is locked on the inner wall of the buckling mechanism 2, thus completing the installation of the equipment.

[0060] Installation mechanism 1 includes:

[0061] Mounting assembly 11 includes a handle 111, and a mounting rod 112 is fixedly connected to the side wall of the handle 111.

[0062] The placement component 12 slides against the outer wall of the mounting rod 112 via a slider.

[0063] The sliding component includes a support frame 121 that slides in contact with the outer wall of the mounting rod 112, and a slide rail 122 is provided on the outer wall of the support frame 121.

[0064] Before use, insert the through hole in the center of the support frame 121 into the mounting rod 112 and slide it to the required height.

[0065] The latching mechanism 2 includes:

[0066] Drive assembly 21 is fixedly connected to the side wall of support frame 121;

[0067] Since the diameter of the inner wall of the support frame 121 is larger than the diameter of the mounting rod 112, and the diameter of the mounting rod 112 is larger than the diameter of the waveguide 15, after the equipment is fully installed, there is a gap between the outer wall of the waveguide 15 and the permanent magnet 211 and the support frame 121. The waveguide 15 and the permanent magnet 211 are in a non-contact state, so that when the waveguide 15 transmits magnetic signals, the magnetic signals will not be disturbed by the contact of the hard material of the outer wall, thus avoiding data errors during the transmission and return of magnetic signals.

[0068] The snap-fit ​​assembly 22 is fixedly connected to the inner wall of the support frame 121;

[0069] Among them, the drive component 21 will force the buckle component 22 to lock onto the outer wall of the mounting rod 112, so that after the worker inserts the mounting rod 112, the buckle mechanism 2, and the pressure mechanism 3 into the hole through the handle 111, the buckle mechanism 2 and the pressure mechanism 3 will not slip due to the small internal resistance.

[0070] Pressure mechanism 3 includes:

[0071] Pressure application component 31 is slidably connected to the outer wall of slide rail 122;

[0072] Contact component 32 is fixedly connected to the top of pressure application component 31;

[0073] When the pressure mechanism 3 is inserted into the hole, the top of the contact component 32 is always in contact with the inner wall of the hole.

[0074] Example 2, please refer to Figure 2 - Figure 8 The present invention is a single-line distributed multi-point displacement meter. Based on the first embodiment, the mounting assembly 11 further includes a slot 113 formed on the outer wall of the mounting rod 112.

[0075] When the operator inserts the buckling mechanism 2 into the end of the mounting rod 112 away from the handle 111, the buckling assembly 22 will lock into the inner wall of the slot 113, restricting the movement of the buckling mechanism 2.

[0076] The placement component 12 includes a sliding groove 123 formed on the outer wall of the support frame 121, a sliding plate 124 slidably connected to the inner wall of the sliding groove 123, and a sliding groove 125 formed on the top of the sliding plate 124.

[0077] The side wall of the sliding groove 125 is in communication with the side wall of the slide rail 122. When the pressure mechanism 3 is resisted and reaches the position of the sliding groove 125, the sliding plate 124 is under pressure and will slide down along the inner wall of the sliding groove 123.

[0078] The drive assembly 21 includes a permanent magnet 211 fixedly connected to the side wall of the support frame 121, a push rod 212 fixedly connected to the bottom of the sliding plate 124, a spring 213 fixedly connected to the inner wall of the sliding groove 123, and the other end of the spring 213 fixedly connected to the bottom of the sliding plate 124.

[0079] During the use of the equipment, spring 213 always generates an outward pushing pressure, forcing sliding plate 124 to be flush with the outer wall of support frame 121.

[0080] The buckle assembly 22 includes a fixing rod 221 fixedly connected to the inner wall of the support frame 121, a rotating plate 222 rotatably connected to the outer wall of the fixing rod 221, a torsion spring 223 fixedly connected to the inner wall of the rotating plate 222, and the other end of the torsion spring 223 fixedly connected to the outer wall of the fixing rod 221.

[0081] When the sliding plate 124 slides along the inner wall of the sliding groove 123, the sliding plate 124 will drive the push rod 212 to move synchronously and squeeze the rotating plate 222 to rotate around the fixed rod 221.

[0082] The pressure application component 31 includes a sliding plate 311 that is slidably connected to the outer wall of the slide rail 122. A telescopic rod 312 is fixedly connected to the outer wall of the sliding plate 311. A mounting plate 313 is fixedly connected to the end of the telescopic rod 312 away from the sliding plate 311. A spring 314 is fixedly connected to the outer wall of the telescopic rod 312.

[0083] When the sliding plate 311 reaches the sliding groove 123, due to the increased thickness of the support frame 121, the mechanical force generated by the spring 314 will force the inclined contact plate 322 to be in close contact with the inner wall of the hole, causing the spring 314 to... Figure 3 The state of G in the middle becomes Figure 7 The F-shaped structure increases the contact surface of the equipment, improving its stability after installation.

[0084] After the staff delivers the pressure mechanism 3 to the designated position, the staff pulls back the mounting rod 112. At this time, the contact component 32 will provide thrust to the pressure application component 31, forcing the sliding plate 311 to slide along the inner wall of the slide rail 122.

[0085] The contact assembly 32 includes a fixing frame 321 fixedly connected to the top of the mounting plate 313, an inclined contact plate 322 rotatably connected to the inner wall of the fixing frame 321, and a torsion spring 323 fixedly connected to the inner wall of the inclined contact plate 322.

[0086] After the slide rail 122 is inserted to a sufficient position, the staff pulls out the installation rod 112 in the opposite direction. Since the inner wall of the hole is mechanically drilled and the inner wall is relatively rough, the inclined contact plate 322 will force the sliding plate 311 to slide along the inner wall of the slide rail 122. During this process, the pressure component 31 is connected to the buckle of the slot 113 by the buckle of the placement component 12 contact buckle component 22, reducing the difficulty of the initial installation of the equipment.

[0087] Among them, the second torsion spring 323 will force the inclined contact plate 322 to always be in an upward tilted state, so that whether it is going deep into the hole or being pulled back later, the end of the inclined contact plate 322 will always be in contact with the inner wall of the hole.

[0088] The inclined design of the inclined contact plate 322 allows it to enter the hole at a large angle. The sharp tail of the inclined contact plate 322 reduces the resistance it encounters as it penetrates deeper into the hole. When the inclined contact plate 322 is under tension, the sharp tail will get stuck on the rough inner wall of the hole. The angle of force will also increase the resistance to the outward movement of the inclined contact plate 322, ensuring that the inclined contact plate 322 has sufficient pressure to force the sliding plate 311 to slide along the inner wall of the slide rail 122.

[0089] One specific application of this embodiment is as follows: Before using the device, drill a hole with a diameter of about 5 cm at the desired location using an electric drill. Then, fit the support frame 121 onto the outer wall of the mounting rod 112 from the end away from the handle 111, presenting as follows. Figure 3 In this state, the worker then uses the handle 111 to push the mounting rod 112, the buckling mechanism 2, and the pressure mechanism 3 deeper into the hole, so that the equipment presents the state as follows. Figure 2 In this process, due to the compression of the inclined contact plate 322 by the inner wall of the hole, the torsion spring 323 deforms, forcing one end of the inclined contact plate 322 to always be in contact with the inner wall of the hole, presenting a state as follows. Figure 6 The state of F in the middle;

[0090] After the slide rail 122 has been inserted to a sufficient position, the operator then pulls out the handle 111 and the mounting rod 112 in the opposite direction. At this point, because the inner wall of the hole is mechanically drilled and relatively rough, when the mounting rod 112 drives the buckling mechanism 2 and the pressure mechanism 3 to move outward, the mounting rod 112 drives the rotating plate 222, the fixed rod 221, and the support frame 121 to move outward synchronously through the slot 113. Because the end of the inclined contact plate 322 is sharp and closely adheres to the inner wall of the hole, the inclined contact plate 322 restricts the movement of the sliding plate 311, causing the sliding plate 311 to move along the slide rail 122. The inner wall of the sliding plate 314 moves towards the permanent magnet 211. During the sliding process, due to the inclined shape of the outer wall of the support frame 121, the spring 314 is gradually compressed and deformed, accumulating mechanical power. When the sliding plate 311 reaches the position of the sliding groove 125, the spring 314 releases the accumulated mechanical power, forcing the sliding plate 124 to move along the inner wall of the sliding groove 123 towards the position of the latching assembly 22. Finally, the sliding groove 125 presses one end of the rotating plate 222 through the push rod 212, causing the rotating plate 222 to move from the fixed rod 221 as the center. Figure 4 The state of N changes to Figure 7 When the L state is reached, the rotating plate 222 loses its snap-fit ​​connection with the mounting rod 112. At this time, the operator can pull out the mounting rod 112, insert the waveguide 15 into the center hole of the support frame 121, and fix the sensor 13 in the required position through the mounting plate 14 to complete the installation of the equipment.

[0091] When the sliding plate 311 reaches the sliding groove 123, due to the increased thickness of the support frame 121, the mechanical force generated by the spring 314 will force the inclined contact plate 322 to be in close contact with the inner wall of the hole, causing the spring 314 to... Figure 3 The state of G in the middle becomes Figure 7 The F-shaped structure increases the contact surface of the equipment, improving its stability after installation.

[0092] During the installation process, because the diameter of the inner wall of the support frame 121 is larger than the diameter of the mounting rod 112, and the diameter of the mounting rod 112 is larger than the diameter of the waveguide 15, after the equipment is fully installed, there is a gap between the outer wall of the waveguide 15 and the permanent magnet 211 and the support frame 121. The waveguide 15 and the permanent magnet 211 are in a non-contact state, so that when the waveguide 15 transmits magnetic signals, the magnetic signals will not be disturbed by contact with the hard material of the outer wall, thus avoiding data errors during magnetic signal transmission and return.

[0093] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A single-line distributed multi-point displacement meter, comprising a sensor (13), wherein a mounting plate (14) is fixedly connected to the side wall of the sensor (13), and a waveguide (15) is fixedly connected to the side wall of the mounting plate (14), characterized in that, Also includes: Installation mechanism (1), which is used to deliver the subsequent mechanism to the required position in the deep hole; The latching mechanism (2) is set on the outer wall of the mounting mechanism (1) and is used to disengage from the mounting mechanism (1) after reaching the required height to complete the installation; Pressure mechanism (3), which is fixedly installed on the outer wall of the buckling mechanism (2) to provide conditions for the buckling mechanism (2) to disengage; Before use, the buckling mechanism (2) is first placed on the outer wall of the installation mechanism (1), and the buckling mechanism (2) is sent to the required position. Then the installation mechanism (1) is pulled back so that the pressure mechanism (3) is locked on the inner wall of the buckling mechanism (2) to complete the installation of the equipment. The installation mechanism (1) includes: Mounting assembly (11), which includes a handle (111) and a mounting rod (112). Placement component (12), which slides against the outer wall of mounting rod (112) via a slider; The slider includes a support frame (121) that slides in contact with the outer wall of the mounting rod (112). The placement component (12) includes a sliding groove (123) on the outer wall of the support frame (121), a sliding plate (124) is slidably connected to the inner wall of the sliding groove (123), and a sliding groove (125) is provided on the top of the sliding plate (124). The latching mechanism (2) includes: A drive assembly (21) is fixedly connected to the side wall of the support frame (121); The snap-fit ​​assembly (22) is fixedly connected to the inner wall of the support frame (121); Among them, the drive component (21) will force the buckle component (22) to be locked on the outer wall of the mounting rod (112), so that after the worker puts the mounting rod (112) and the buckle mechanism (2) and the pressure mechanism (3) into the hole through the handle (111), the buckle mechanism (2) and the pressure mechanism (3) will not slip due to the small internal resistance. The drive assembly (21) includes a permanent magnet (211) fixedly connected to the side wall of the support frame (121), a push rod (212) fixedly connected to the bottom of the sliding plate (124), a spring (213) fixedly connected to the inner wall of the sliding groove (123), and the other end of the spring (213) fixedly connected to the bottom of the sliding plate (124). Among them, spring 1 (213) always generates an outward pushing pressure during the use of the equipment, forcing sliding plate 1 (124) to be flush with the outer wall of support frame (121); The buckle assembly (22) includes a fixing rod (221) fixedly connected to the inner wall of the support frame (121), a rotating plate (222) rotatably connected to the outer wall of the fixing rod (221), a torsion spring (223) fixedly connected to the inner wall of the rotating plate (222), and the other end of the torsion spring (223) fixedly connected to the outer wall of the fixing rod (221). When the sliding plate (124) slides along the inner wall of the sliding groove (123), the sliding plate (124) will drive the push rod (212) to move synchronously and squeeze the rotating plate (222) to rotate around the fixed rod (221).

2. The single-line distributed multi-point displacement meter according to claim 1, characterized in that: The mounting rod (112) is fixedly connected to the side wall of the handle (111); a slide rail (122) is provided on the outer wall of the support frame (121). Before use, insert the through hole in the center of the support frame (121) into the mounting rod (112) and slide it to the required height.

3. A single-line distributed multi-point displacement meter according to claim 2, characterized in that: The pressure mechanism (3) includes: A pressure application component (31) is slidably connected to the outer wall of the slide rail (122); Contact assembly (32), which is fixedly connected to the top of pressure assembly (31); When the pressure mechanism (3) is inserted into the hole, the top of the contact component (32) is always in contact with the inner wall of the hole.

4. A single-line distributed multi-point displacement meter according to claim 3, characterized in that: The mounting assembly (11) also includes a slot (113) formed on the outer wall of the mounting rod (112). When the worker inserts the buckling mechanism (2) into the end of the mounting rod (112) away from the handle (111), the buckling assembly (22) will be locked in the inner wall of the slot (113), restricting the movement of the buckling mechanism (2).

5. A single-line distributed multi-point displacement meter according to claim 4, characterized in that: The side wall of sliding groove 2 (125) is in communication with the side wall of slide rail (122). When the pressure mechanism (3) reaches the position of sliding groove 2 (125) under resistance, sliding plate 1 (124) is under pressure and will slide down along the inner wall of sliding groove 1 (123).

6. A single-line distributed multi-point displacement meter according to claim 5, characterized in that: The pressure application component (31) includes a sliding plate two (311) slidably connected to the outer wall of the slide rail (122), a telescopic rod (312) fixedly connected to the outer wall of the sliding plate two (311), a mounting plate two (313) fixedly connected to the end of the telescopic rod (312) away from the sliding plate two (311), and a spring two (314) fixedly connected to the outer wall of the telescopic rod (312). After the staff sends the pressure mechanism (3) to the designated position, the staff will pull back the mounting rod (112). At this time, the contact component (32) will provide thrust to the pressure component (31), forcing the sliding plate (311) to slide along the inner wall of the slide rail (122).

7. A single-line distributed multi-point displacement meter according to claim 6, characterized in that: The contact assembly (32) includes a fixing frame (321) fixedly connected to the top of the mounting plate (313), an inclined contact plate (322) is rotatably connected to the inner wall of the fixing frame (321), and a torsion spring (323) is fixedly connected to the inner wall of the inclined contact plate (322). The second torsion spring (323) will force the inclined contact plate (322) to always be in an upward tilted state, so that whether it is going deep into the hole or being pulled back later, the end of the inclined contact plate (322) will always be in contact with the inner wall of the hole.

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