Single-line distributed multipoint displacement meter

Abstract

The invention relates to the technical field of distributed multi-point displacement meters, and discloses a single-line distributed multi-point displacement meter which comprises a sensor, a first mounting plate is fixedly connected to the side wall of the sensor, and a waveguide tube is fixedly connected to the side wall of the first mounting plate. After a sliding rail goes deep into a sufficient position, a worker pulls out a mounting rod reversely, a second sliding plate is forced to slide along the inner wall of the sliding rail due to the fact that the inner wall of a hole is mechanically drilled and is rough and an inclined contact plate forces the second sliding plate to slide along the inner wall of the sliding rail, and a second spring is gradually pressed to deform and accumulate mechanical power due to the fact that the outer wall of a supporting frame is inclined. And when the second sliding plate reaches the second sliding groove, the second spring releases the accumulated mechanical power, and in the process, the pressing assembly makes contact with the buckle assembly through the placing assembly and is connected with the buckle of the clamping groove in a buckled mode, so that the early-stage installation difficulty of the equipment is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of distributed multi-point displacement gauges, and particularly to a single-line distributed multi-point displacement gauge. Background Art

[0002] Magnetic displacement sensors include single-line multi-point displacement gauges. The principle of the single-line 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 a signal is generated by the sensor and flows in the waveguide, a circumferential magnetic field is generated outside the waveguide at this time. When this magnetic field passes through the magnetic field generated by the permanent magnet ring, due to the magnetostrictive effect, a strain mechanical wave will be generated in the waveguide and return to the inside of the sensor to complete the detection. And such devices are mostly installed inside deep holes with a relatively long length and a relatively small diameter; When installing the single-line multi-point displacement gauge, it is often necessary to install permanent magnet rings at different positions in the deep hole to reflect the magnetic signals of the displacement gauge. However, due to the too small diameter of the hole, the installation of the permanent magnet ring will increase the installation difficulty. Moreover, for the installation inside the hole, since manual operation is not possible, the permanent magnet ring will become loose after long-term use, resulting in incorrect data. For the above problems, the following solutions are proposed. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a single-line distributed multi-point displacement gauge, including a sensor. A mounting plate one is fixedly connected to the side wall of the sensor, and a waveguide is fixedly connected to the side wall of the mounting plate one; A mounting mechanism for sending the subsequent mechanism to the required position in the deep hole; A buckle mechanism arranged on the outer wall of the mounting mechanism for disengaging from the mounting mechanism after reaching the required height to complete the installation; A pressure mechanism fixedly arranged on the outer wall of the buckle mechanism to provide conditions for the disengagement of the buckle mechanism; Among them, before use, first put the buckle mechanism on the outer wall of the mounting mechanism and send the buckle mechanism to the required position, and then pull the mounting mechanism backward so that the pressure mechanism is stuck in the inner wall of the buckle mechanism to complete the installation of the device.

[0004] Preferably, the mounting mechanism includes: A mounting component including a grip, and a mounting rod is fixedly connected to the side wall of the grip; A placing component that is in sliding contact with the outer wall of the mounting rod through a sliding member; The sliding member includes a support frame that is in sliding contact with the outer wall of the mounting rod, and a slide rail is provided on the outer wall of the support frame; Among them, before use, first insert the through hole in the center of the support frame onto the mounting rod and slide it to the required height.

[0005] Preferably, the buckle mechanism includes: A driving component fixedly connected to the side wall of the support frame; Since the diameter of the inner wall of the support frame is larger than that of the mounting rod, and the diameter of the mounting rod is larger than that of the waveguide, after the device is fully installed, there is a gap between the outer wall of the waveguide, the permanent magnet, and the support frame. The waveguide and the permanent magnet are in a non-contact state, so that when the waveguide transmits the magnetic signal, the magnetic signal will not be disturbed due to the contact of the hard material on the outer wall, and data errors during the transmission and return of the magnetic signal can be avoided; A buckle component fixedly connected to the inner wall of the support frame; Among them, the driving component will force the buckle component to be stuck on the outer wall of the mounting rod, so that after the worker inserts the mounting rod, the buckle mechanism, and the pressure mechanism into the hole through the handle, the buckle mechanism and the pressure mechanism will not slide due to the small internal resistance.

[0006] Preferably, the pressure mechanism includes: A pressing component slidably connected to the outer wall of the slide rail; A contact component fixedly connected to the top of the pressing component; Among them, 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.

[0007] Preferably, the mounting component further includes a card slot opened on the outer wall of the mounting rod; Among them, when the worker inserts the buckle mechanism into the end of the mounting rod away from the handle, the buckle component will be stuck on the inner wall of the card slot to limit the movement of the buckle mechanism.

[0008] Preferably, the placement component includes a sliding groove one opened on the outer wall of the support frame. A sliding plate one is slidably connected to the inner wall of the sliding groove one, and a sliding groove two is opened on the top of the sliding plate one; Among them, the side wall of the sliding groove two is in communication with the side wall of the slide rail. When the pressure mechanism reaches the position of the sliding groove two under resistance, the sliding plate one is pressed and will slide down along the inner wall of the sliding groove one.

[0009] Preferably, the driving component includes a permanent magnet fixedly connected to the side wall of the support frame. A push rod is fixedly connected to the bottom of the sliding plate one, and a spring one is fixedly connected to the inner wall of the sliding groove one. The other end of the spring one is fixedly connected to the bottom of the sliding plate one; Among them, during the use of the device, the spring one always generates an outward pushing pressure to force the sliding plate one to be flush with the outer wall of the support frame.

[0010] Preferably, the buckle assembly includes a fixed rod fixedly connected to the inner wall of the support frame. A rotating plate is rotatably connected to the outer wall of the fixed rod. A first torsion spring is fixedly connected to the inner wall of the rotating plate, and the other end of the first torsion spring is fixedly connected to the outer wall of the fixed rod; Wherein, when the first sliding plate slides along the inner wall of the first sliding groove, the first sliding plate will drive the push rod to move synchronously, and squeeze the rotating plate to rotate around the fixed rod.

[0011] Preferably, the pressing assembly includes a second sliding plate slidably connected to the outer wall of the sliding rail. A telescopic rod is fixedly connected to the outer wall of the second sliding plate. A second mounting plate is fixedly connected to the end of the telescopic rod away from the second sliding plate. A second spring is fixedly connected to the outer wall of the telescopic rod; When the second sliding plate reaches the position of the first sliding groove, due to the increased thickness of the support frame, the mechanical force generated by the second spring will force the inclined contact plate to be in close contact with the inner wall of the hole, so that the second spring changes from the state of Figure 3 G in Figure 7 to the state of F in thereby increasing the contact surface of the device and improving the stability of the device after installation;

[0012] Preferably, the contact assembly includes a fixed frame fixedly connected to the top of the second mounting plate. An inclined contact plate is rotatably connected to the inner wall of the fixed frame. A second torsion spring is fixedly connected to the inner wall of the inclined contact plate; After the sliding rail penetrates deep enough, the staff reversely pulls out the mounting rod. Since the inner wall of the hole is mechanically drilled and the inner wall is relatively rough, the inclined contact plate will force the second sliding plate to slide along the inner wall of the sliding rail. During this process, the pressing assembly contacts the buckle connection between the buckle assembly and the card slot through the placement assembly, reducing the installation difficulty of the device in the early stage; Wherein the second torsion spring will force the inclined contact plate to always form an upwardly tilted state, so that the end of the inclined contact plate always contacts the inner wall of the hole whether it penetrates deep into the hole or is reversely pulled later; The inclined contact plate is inclinedly designed, so that after the inclined contact plate enters the hole, the large-angle inclination and the sharp tail design make the resistance received by the inclined contact plate decrease during the process of penetrating the hole. When the inclined contact plate is subjected to a tensile force, the sharp tail end will be stuck on the rough inner wall of the hole, and due to the influence of the force angle, the resistance to the outward movement of the inclined contact plate will be increased at this time, ensuring that the inclined contact plate has enough pressure to force the second sliding plate to slide along the inner wall of the sliding rail.

[0013] The present invention has the following beneficial effects: (1) The present invention utilizes the rough characteristics inside the drilled hole. An inclined contact plate is provided inside the device. After the slide rail penetrates deep enough, the staff reversely pulls out the mounting rod. Since the inner wall of the hole is mechanically drilled and relatively rough, the inclined contact plate will force the second sliding plate to slide along the inner wall of the slide rail. During this process, the pressing component contacts the buckling connection between the buckling component and the clamping groove through the placing component, reducing the installation difficulty of the device in the early stage.

[0014] (2) After the above device of the present invention 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 as well as the support frame after the device is completely 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 due to the contact of the hard material on the outer wall, avoiding data errors during the transmission and return of magnetic signals.

[0015] (3) The present invention adopts an inclined design of the inclined contact plate. After the inclined contact plate enters the hole, the large-angle inclination and the sharp tail design make the resistance of the inclined contact plate decrease during the process of penetrating the hole. When the inclined contact plate is subjected to a tensile force, the sharp tail end will be stuck in the rough inner wall of the hole. Affected by the force angle, the resistance to the outward movement of the inclined contact plate will be increased at this time, ensuring that the inclined contact plate has enough pressure to force the second sliding plate to slide along the inner wall of the slide rail.

[0016] (4) When the second sliding plate reaches the position of the first sliding groove, due to the increased thickness of the support frame, the mechanical force generated by the second spring will force the inclined contact plate to be in close contact with the inner wall of the hole, so that the second spring changes from the state of G in Figure 3 to the state of F in Figure 7 , increasing the contact surface of the device and improving the stability of the device after installation; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is an exploded schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the working state of the overall structure of the present invention; Figure 3 It is a sectional view schematic diagram of the placing component of the present invention; Figure 4 For the present invention Figure 3Enlarged schematic diagram at position A in [the relevant context]; Figure 5 This invention Figure 3 Enlarged schematic diagram at position B in [the relevant context]; Figure 6 Schematic diagram of the working state of the inclined contact plate of this invention; Figure 7 Schematic diagram of the working state of the pressure mechanism of this invention; Figure 8 Schematic diagram of the working state of the overall structure of this invention.

[0019] In the attached drawings, the list of components represented by each reference numeral is as follows: In the figure: 1. Installation mechanism; 11. Installation component; 12. Placing component; 13. Sensor; 14. First mounting plate; 15. Waveguide; 111. Handle; 112. Mounting rod; 113. Card slot; 121. Support frame; 122. Slide rail; 123. First sliding slot; 124. First sliding plate; 125. Second sliding slot; 2. Buckling mechanism; 21. Driving component; 22. Buckling component; 211. Permanent magnet; 212. Pushing rod; 213. First spring; 221. Fixed rod; 222. Rotating plate; 223. First torsion spring; 3. Pressure mechanism; 31. Pressing component; 32. Contact component; 311. Second sliding plate; 312. Telescopic rod; 313. Second mounting plate; 314. Second spring; 321. Fixed frame; 322. Inclined contact plate; 323. Second torsion spring. Specific implementation method

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Example 1, please refer to Figure 1 - Figure 5 , this invention is a single-line distributed multi-point displacement meter, including a sensor 13. A first 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 first mounting plate 14; Installation mechanism 1, which is used to send the subsequent mechanism to the required position in the deep hole; Buckling mechanism 2, which is arranged on the outer wall of the installation mechanism 1 and is used to disengage from the installation mechanism 1 after reaching the required height to complete the installation; Pressure mechanism 3, which is fixedly arranged on the outer wall of the buckling mechanism 2 and provides conditions for the disengagement of the buckling mechanism 2; Among them, before use, first put the buckle mechanism 2 on the outer wall of the installation mechanism 1, and send the buckle mechanism 2 to the required position. Then, pull the installation mechanism 1 backward to make the pressure mechanism 3 stuck on the inner wall of the buckle mechanism 2, completing the installation of the device.

[0022] The installation mechanism 1 includes: An installation component 11, the installation component 11 includes a grip 111, and an installation rod 112 is fixedly connected to the side wall of the grip 111; A placement component 12, the placement component 12 is in sliding contact with the outer wall of the installation rod 112 through a sliding member; The sliding member includes a support frame 121 that is in sliding contact with the outer wall of the installation rod 112, and a slide rail 122 is provided on the outer wall of the support frame 121; Among them, before use, first insert the through hole in the center of the support frame 121 onto the installation rod 112 and slide it to the required height.

[0023] The buckle mechanism 2 includes: A drive component 21, the drive component 21 is fixedly connected to the side wall of the support frame 121; Since the diameter of the inner wall of the support frame 121 is larger than the diameter of the installation rod 112, and the diameter of the installation rod 112 is larger than the diameter of the waveguide 15, after the device is completely installed, there is a gap between the outer wall of the waveguide 15, the permanent magnet 211, and the support frame 121, and there is no contact between the waveguide 15 and the permanent magnet 211. When the waveguide 15 transmits magnetic signals, the magnetic signals will not be disturbed due to contact with the hard material on the outer wall, avoiding data errors during the transmission and return of magnetic signals; A buckle component 22, the buckle component 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 stuck on the outer wall of the installation rod 112, so that after the worker inserts the installation rod 112, the buckle mechanism 2, and the pressure mechanism 3 into the hole through the grip 111, the buckle mechanism 2 and the pressure mechanism 3 will not slide due to the small internal resistance.

[0024] The pressure mechanism 3 includes: A pressure - applying component 31, the pressure - applying component 31 is slidably connected to the outer wall of the slide rail 122; A contact component 32, the contact component 32 is fixedly connected to the top of the pressure - applying component 31; Among them, 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.

[0025] Embodiment 2, please refer to Figure 2 - Figure 8, the present invention is a single-line distributed multi-point displacement meter. On the basis of Embodiment 1, the installation component 11 further includes a card slot 113 opened on the outer wall of the installation rod 112; Among them, when the staff inserts the buckle mechanism 2 into the end of the installation rod 112 away from the grip 111, the buckle component 22 will be stuck on the inner wall of the card slot 113 to restrict the movement of the buckle mechanism 2.

[0026] The placement component 12 includes a sliding slot one 123 opened on the outer wall of the support frame 121. A sliding plate one 124 is slidably connected to the inner wall of the sliding slot one 123, and a sliding slot two 125 is opened at the top of the sliding plate one 124; Among them, the side wall of the sliding slot two 125 is in communication with the side wall of the slide rail 122. When the pressure mechanism 3 reaches the position of the sliding slot two 125 under resistance, the sliding plate one 124 is under pressure and will slide downward along the inner wall of the sliding slot one 123.

[0027] The driving component 21 includes a permanent magnet 211 fixedly connected to the side wall of the support frame 121. A push rod 212 is fixedly connected to the bottom of the sliding plate one 124, and a spring one 213 is fixedly connected to the inner wall of the sliding slot one 123. The other end of the spring one 213 is fixedly connected to the bottom of the sliding plate one 124; Among them, during the use of the device, the spring one 213 always generates an outward pushing pressure, forcing the sliding plate one 124 to be flush with the outer wall of the support frame 121.

[0028] The buckle component 22 includes a fixed rod 221 fixedly connected to the inner wall of the support frame 121. A rotating plate 222 is rotatably connected to the outer wall of the fixed rod 221. A torsion spring one 223 is fixedly connected to the inner wall of the rotating plate 222, and the other end of the torsion spring one 223 is fixedly connected to the outer wall of the fixed rod 221; Among them, when the sliding plate one 124 slides along the inner wall of the sliding slot one 123, the sliding plate one 124 will drive the push rod 212 to move synchronously and squeeze the rotating plate 222 to rotate around the fixed rod 221.

[0029] The pressure-applying component 31 includes a sliding plate two 311 slidably connected to the outer wall of the slide rail 122. An expansion link 312 is fixedly connected to the outer wall of the sliding plate two 311. The end of the expansion link 312 away from the sliding plate two 311 is fixedly connected to a mounting plate two 313, and a spring two 314 is fixedly connected to the outer wall of the expansion link 312; When the sliding plate two 311 reaches the position of the sliding slot one 123, due to the increase in the thickness of the support frame 121, the mechanical force generated by the spring two 314 will force the inclined contact plate 322 to be in close contact with the inner wall of the hole, so that the spring two 314 changes from Figure 3 state G in Figure 7The middle F state increases the contact surface of the equipment and improves the stability of the equipment after installation; After the staff sends the pressure mechanism 3 to the designated position, the staff will pull back the installation rod 112 . At this time, the contact component 32 will provide thrust for the pressure component 31 , forcing the sliding plate 2 311 to slide along the inner wall of the slide rail 122 .

[0030] The contact assembly 32 includes a fixing frame 321 fixedly connected to the top of the second mounting plate 313, an inclined contact plate 322 is rotatably connected to the inner wall of the fixing frame 321, and a second torsion spring 323 is fixedly connected to the inner wall of the inclined contact plate 322; After the slide rail 122 has penetrated far enough, the worker pulls out the mounting rod 112 in the opposite direction. Since the inner wall of the hole is mechanically drilled and relatively rough, the inclined contact plate 322 forces the second sliding plate 311 to slide along the inner wall of the slide rail 122. During this process, the pressure component 31 contacts the buckle component 22 through the placement component 12 and is connected to the buckle of the card slot 113, reducing the difficulty of the equipment's initial installation. The second torsion spring 323 forces the inclined contact plate 322 to always be in an upward tilted state, so that no matter whether it is inserted into the deep hole or pulled back later, the end of the inclined contact plate 322 is always in contact with the inner wall of the hole; The inclined contact plate 322 is designed to be inclined, so that after the inclined contact plate 322 enters the hole, the large angle of inclination and the sharp tail design reduce the resistance encountered by the inclined contact plate 322 in the process of penetrating into the hole. When the inclined contact plate 322 is subjected to tension, the sharp tail end will be stuck on the rough inner wall of the hole, and under the influence of the force angle, the resistance to the outward movement of the inclined contact plate 322 will be increased at this time, ensuring that the inclined contact plate 322 has sufficient pressure to force the sliding plate 2 311 to slide along the inner wall of the slide rail 122.

[0031] A specific application of this embodiment is: before using the device, first drill a hole with a diameter of about 5 cm at the desired location with an electric drill, and then put the support frame 121 on the outer wall of the mounting rod 112 from the end away from the handle 111 of the mounting rod 112, so as to present the following Figure 3 The staff then uses the handle 111 to push the mounting rod 112, the buckle mechanism 2 and the pressure mechanism 3 deeper into the hole, so that the device appears as follows Figure 2 In this process, the inclined contact plate 322 is squeezed by the inner wall of the hole, which causes the torsion spring 2 323 to deform and forces one end of the inclined contact plate 322 to always contact the inner wall of the hole, showing as follows Figure 6 The status of F in the middle; After the slide rail 122 has penetrated deep enough, the staff then pulls out the handle 111 and the mounting rod 112 in the reverse direction. At this time, since the inner wall of the hole is a mechanical drilled hole and the inner wall is relatively rough, when the mounting rod 112 drives the buckle mechanism 2 and the pressure mechanism 3 to move outward, the mounting rod 112 drives the rotating plate 222, the fixing rod 221 and the support frame 121 to move outward synchronously through the card slot 113. Since the end of the inclined contact plate 322 is sharp and fits tightly against the inner wall of the hole, the inclined contact plate 322 will limit the movement of the sliding plate 2 311, so that the sliding plate 2 311 moves along the slide rail 122. The inner wall of the support frame 121 moves toward the direction of the permanent magnet 211, and in the process of sliding, since the outer wall of the support frame 121 is inclined, the spring 2 314 is gradually compressed to produce deformation and accumulate mechanical power. When the sliding plate 2 311 reaches the position of the sliding groove 2 125, the spring 2 314 will release the accumulated mechanical power, forcing the sliding plate 124 to move along the inner wall of the sliding groove 123 toward the position of the buckle assembly 22. Finally, the sliding groove 2 125 presses one end of the rotating plate 222 through the push rod 212, so that the rotating plate 222 is centered on the fixed rod 221, and the rotating plate 222 moves from Figure 4 The state of N changes to Figure 7 In the middle L state, the rotating plate 222 loses the snap connection with the mounting rod 112. The staff can now 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 desired position through the mounting plate 14 to complete the installation of the equipment. When the sliding plate 311 reaches the position of the sliding groove 123, 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 due to the increase in the thickness of the support frame 121, so that the spring 314 is Figure 3 The state of G changes to Figure 7 The middle F state increases the contact surface of the equipment and improves the stability of the equipment after installation; During the installation of the device, 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 tube 15, after the device is fully installed, there is a gap between the outer wall of the waveguide tube 15 and the permanent magnet 211 and the support frame 121, and the waveguide tube 15 and the permanent magnet 211 are in a non-contact state, so that when the waveguide tube 15 transmits magnetic signals, the magnetic signals will not be disturbed by the contact with the hard material of the outer wall, thereby avoiding data errors during the transmission and return of magnetic signals.

[0032] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited 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 first 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 first mounting plate (14), characterized in that, Further included are: An installation mechanism (1) for sending subsequent mechanisms to the required positions in deep holes; A buckle mechanism (2) arranged on the outer wall of the installation mechanism (1) for disengaging from the installation mechanism (1) after reaching the required height to complete the installation; A pressure mechanism (3) fixedly arranged on the outer wall of the buckle mechanism (2) to provide conditions for the disengagement of the buckle mechanism (2); Among them, before use, first put the buckle mechanism (2) on the outer wall of the installation mechanism (1), send the buckle mechanism (2) to the required position, and then pull the installation mechanism (1) backward so that the pressure mechanism (3) is stuck in the inner wall of the buckle mechanism (2) to complete the installation of the device.

2. The single-line distributed multi-point displacement gauge according to claim 1, characterized in that: The installation mechanism (1) includes: An installation component (11), the installation component (11) includes a grip (111), and an installation rod (112) is fixedly connected to the side wall of the grip (111); A placement component (12) slidably contacting the outer wall of the installation rod (112) through a sliding member; The sliding member includes a support frame (121) slidably contacting the outer wall of the installation rod (112), and a slide rail (122) is provided on the outer wall of the support frame (121); Among them, before use, first insert the through hole in the center of the support frame (121) onto the installation rod (112) and slide it to the required height.

3. The single-line distributed multi-point displacement meter according to claim 2, characterized in that: The buckle mechanism (2) includes: A drive component (21) fixedly connected to the side wall of the support frame (121); A buckle component (22) 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 stuck on the outer wall of the installation rod (112), so that after the worker sends the installation rod (112), the buckle mechanism (2), and the pressure mechanism (3) into the hole through the grip (111), the buckle mechanism (2) and the pressure mechanism (3) will not slide due to the small internal resistance.

4. The single-line distributed multi-point displacement meter according to claim 3, characterized in that: The pressure mechanism (3) includes: A pressure application component (31) slidably connected to the outer wall of the slide rail (122); A contact component (32) fixedly connected to the top of the pressure application component (31); Among them, 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.

5. The single-line distributed multi-point displacement meter according to claim 4, characterized in that: The installation component (11) further includes a card slot (113) provided on the outer wall of the installation rod (112); Among them, when the staff inserts the buckle mechanism (2) into the end of the installation rod (112) away from the grip (111), the buckle component (22) will be stuck on the inner wall of the card slot (at 113) to limit the movement of the buckle mechanism (2).

6. The single-line distributed multi-point displacement meter according to claim 5, characterized in that: The placement component (12) includes a first sliding groove (123) provided on the outer wall of the support frame (121), a first sliding plate (124) is slidably connected to the inner wall of the first sliding groove (123), and a second sliding groove (125) is provided on the top of the first sliding plate (124); Among them, the side wall of the second sliding groove (125) and the side wall of the sliding rail (122) are in a communicating state. When the pressure mechanism (3) reaches the position of the second sliding groove (125) under resistance, the first sliding plate (124) is under pressure and will slide downward along the inner wall of the first sliding groove (123).

7. A single-line distributed multi-point displacement gauge according to claim 6, characterized in that: The driving assembly (21) includes a permanent magnet (211) fixedly connected to the side wall of the support frame (121). A push rod (212) is fixedly connected to the bottom of the first sliding plate (124). A first spring (213) is fixedly connected to the inner wall of the first sliding groove (123), and the other end of the first spring (213) is fixedly connected to the bottom of the first sliding plate (124). Among them, during the use of the device, the first spring (213) always generates an outward pushing pressure, forcing the first sliding plate (124) to be flush with the outer wall of the support frame (121).

8. The single-line distributed multi-point displacement gauge according to claim 7, wherein: The buckle assembly (22) includes a fixed rod (221) fixedly connected to the inner wall of the support frame (121). A rotating plate (222) is rotatably connected to the outer wall of the fixed rod (221). A first torsion spring (223) is fixedly connected to the inner wall of the rotating plate (222), and the other end of the first torsion spring (223) is fixedly connected to the outer wall of the fixed rod (221). Among them, when the first sliding plate (124) slides along the inner wall of the first sliding groove (123), the first 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).

9. The single-line distributed multi-point displacement meter according to claim 8, wherein: The pressing assembly (31) includes a second sliding plate (311) slidably connected to the outer wall of the sliding rail (122). An expansion rod (312) is fixedly connected to the outer wall of the second sliding plate (311). A second mounting plate (313) is fixedly connected to the end of the expansion rod (312) away from the second sliding plate (311). A second spring (314) is fixedly connected to the outer wall of the expansion rod (312). Among them, after the staff sends the pressure mechanism (3) to the designated position, the staff will pull the mounting rod (112) backward. At this time, the contact assembly (32) will provide a thrust for the pressing assembly (31), forcing the second sliding plate (311) to slide along the inner wall of the sliding rail (122).

10. The single-line distributed multi-point displacement gauge according to claim 9, wherein: The contact assembly (32) includes a fixed frame (321) fixedly connected to the top of the second mounting plate (313). An inclined contact plate (322) is rotatably connected to the inner wall of the fixed frame (321). A second torsion spring (323) is fixedly connected to the inner wall of the inclined contact plate (322). Among them, the second torsion spring (323) will force the inclined contact plate (322) to always be in an upwardly tilted state, so that whether it is inserted into a deep hole or pulled backward later, the end of the inclined contact plate (322) always contacts the inner wall of the hole.

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