Carbon contact strip thickness measuring instrument

Abstract

The invention discloses a carbon contact strip thickness measuring instrument, which belongs to the technical field of carbon contact strip measurement, and comprises a rack assembly, a clamping assembly, a supporting assembly, a measuring assembly, a shell assembly and a data recording and analyzing module, the supporting assembly is used for supporting the whole carbon sliding plate thickness measuring instrument, the clamping assembly is used for clamping a measured carbon sliding plate, the measuring assembly is used for measuring the measured carbon sliding plate, the shell assembly plays a role in protection, and the data recording and analyzing module visually displays the thickness result of the carbon sliding plate. The carbon contact strip thickness measuring instrument has the advantages of being small in size, light in weight, convenient to carry and the like, meanwhile, the vertical position of the laser distance measuring sensor can be adaptively adjusted for floating measurement, slight bending of the carbon contact strip is adapted, the measuring precision is guaranteed, the repeatability of multiple times of measurement of the same measured object is good, and the measuring result consistency is good. And the problem of poor repeatability caused by personal techniques in manual measurement is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon skateboard measurement, and particularly to a carbon skateboard thickness measuring instrument. Background Art

[0002] During the operation of a pantograph on a locomotive or a bullet train, as the high-speed sliding pantograph carbon skateboard makes frequent sliding contact with the high-voltage cable, the pantograph carbon skateboard is constantly worn. When the pantograph carbon skateboard is worn to a certain extent, it must be replaced. Otherwise, it will pose a huge potential safety hazard to the track operation. Therefore, during relevant vehicle maintenance, it is necessary to detect the wear amount of the pantograph carbon skateboard.

[0003] Currently, there are already devices on the market for real-time detection of the wear condition of the pantograph carbon skateboard. However, their structures are complex and not easy to operate. Moreover, the wear duration of the pantograph carbon skateboard does not require real-time detection. Therefore, more commonly, manual measurement is adopted. After the vehicle stops running, the pantograph is lowered, and after the pantograph is separated from the catenary, manual detection of the wear amount is carried out. However, this method increases the labor cost of the operator and is prone to errors. Summary of the Invention

[0004] Aiming at the above problems in the prior art, the present invention provides a carbon skateboard thickness measuring instrument, which solves the problems that the existing manual measurement of the carbon skateboard thickness increases the labor cost of the operator and is prone to errors.

[0005] In order to achieve the above invention purpose, the technical solution adopted by the present invention is as follows: A carbon skateboard thickness measuring instrument is provided, which includes a frame assembly, a clamping assembly, a support assembly, a measuring assembly, a housing assembly, and a data recording and analysis module; The frame assembly includes a horizontally arranged mounting plate. On both sides in the width direction of the mounting plate, a fixed plate is vertically arranged respectively. Between the two fixed plates, two connecting columns are horizontally arranged. The two connecting columns are horizontally spaced along the length direction of the mounting plate. A bottom sealing plate is arranged at the bottom of the two fixed plates and the two connecting columns. At least one detection window is arranged on the bottom sealing plate. There are two linear bearings on each connecting column; The clamping assembly includes two rotating plates respectively rotatably connected to the bottoms of the two fixed plates. The two rotating plates are symmetrically arranged with respect to the midline in the width direction of the mounting plate. Each rotating plate is matched with a manual driving member. The two manual driving members drive the two rotating plates to rotate with the bottom of the fixed plate as the center. At least one traveling roller and a lateral roller are arranged on the inner wall of each rotating plate. The traveling roller is used to tightly contact the bottom of the carbon skateboard, and the lateral roller is used to tightly contact the side of the carbon skateboard; The support assembly includes multiple guide columns. One of the guide columns is slidably arranged in each linear bearing, and a top roller is arranged at the bottom of each guide column. The tops of two guide columns in each connecting column are connected by a first connecting rod. A first tension spring is connected to both ends of each first connecting rod. The other end of each first tension spring is fixedly connected to the inner wall of the fixed plate through a connecting shaft. When the first tension spring is stretched, each top roller is in tight contact with the top surface of the carbon skateboard. The measurement assembly includes two laser distance sensors located inside the frame assembly. The acquisition directions of each laser distance sensor are respectively directed towards the two detection windows. Each laser distance sensor is matched with an installation bracket. A first connecting plate is arranged below each installation bracket. The bottom of each first connecting plate passes through the bottom sealing plate and is located inside the rotating plate. Two waist-shaped holes are vertically arranged on each first connecting plate. A first pin is arranged in each of the two waist-shaped holes. Each first connecting plate is vertically and slidably connected to the inner wall of the rotating plate through the cooperation of the first pin and the waist-shaped hole. A second tension spring is arranged in one of the waist-shaped holes on each first connecting plate. The two ends of the second tension spring are respectively fixedly connected to the inner wall of the rotating plate and the first connecting plate. The housing assembly is used to cover the frame assembly, the measurement assembly, the clamping assembly, the support assembly and the data recording and analysis module. The data recording and analysis module includes a power supply, a main control board, a start-stop button and a display that are electrically connected to each other. The two laser distance sensors are electrically connected to the main control board, and the display is arranged on the outer side of the top of the housing assembly.

[0006] Further, each rotating plate is rotatably connected to the bottom of the fixed plate through a rotating assembly. Each rotating assembly includes two rotating seats and a second pin. The two rotating seats are arranged on the fixed plate. The second pin is fixedly connected to the inner wall of the rotating plate through a bushing, and the two ends of the second pin are respectively rotatably matched with the two rotating seats.

[0007] Furthermore, each of the manual driving members includes two driving components which are respectively located on two outer sides in the width direction of the mounting plate. Each driving component includes a fixed base fixed to the upper end surface of the mounting plate. A second connecting rod in an inverted "T" shape is arranged on the fixed base. The top end of the second connecting rod passes through the housing assembly and is located outside. The middle part of the bottom end of the second connecting rod is rotatably connected to the fixed base. An arc-shaped hole is arranged on one side of the bottom end of the second connecting rod. A third pin is arranged in the arc-shaped hole and is fixedly connected to the fixed base. A third connecting rod is hinged to the other side of the second connecting rod. The bottom of the third connecting rod is hinged to the outer wall of the rotating plate through a connecting base. A handle is fixedly arranged between the top ends of the two second connecting rods of the two manual driving members.

[0008] Furthermore, an encoder electrically connected to the main control board is arranged on any one of the rotating plates. An encoder roller for tightly abutting against the side surface of the carbon sliding plate is arranged at the output end of the encoder.

[0009] Furthermore, a channel for the carbon sliding plate to pass through is arranged at the bottom of the housing assembly.

[0010] Furthermore, a linear notch for the top end of the second connecting rod to reciprocally slide is arranged at the top of the housing assembly.

[0011] Furthermore, a spring mounting bracket is arranged on the inner side wall of each fixing plate, and a third tension spring is connected to each spring mounting bracket. A second connecting plate is arranged on the inner wall of each rotating plate, and the top of each second connecting plate is located inside the fixing plate. The other end of the third tension spring is fixedly connected to the top of the second connecting plate.

[0012] Furthermore, at least one guiding block is arranged on the inner wall of each rotating plate. Each guiding block is located above the lateral roller, and the top of each guiding block has a wedge-shaped structure with the small end facing downwards. The guiding block can prevent the jamming problem when the thickness measuring instrument rebounds upwards.

[0013] The basic principle of the carbon skateboard thickness measuring instrument in the present invention is as follows: Hold the handle with one hand to open the clamping assembly, place the measuring instrument on the carbon skateboard, then press down the measuring instrument forcefully. Under the action of the third tension spring, the clamping assembly automatically resets to clamp the carbon skateboard, making the lateral rollers and the encoder rollers closely adhere to the left and right sides of the carbon skateboard; the supporting assembly lifts the entire measuring instrument under the action of the first tension spring to ensure that the walking rollers and the top rollers closely adhere to the lower surface of the carbon skateboard; subsequently, manually push the measuring instrument to move on the carbon skateboard, the laser distance sensor in the measuring assembly measures the carbon skateboard, and at the same time, the rotary encoder on the side will record the position data; during the measurement process, the second tension spring ensures that the measuring rollers can always adhere to the lower surface of the carbon skateboard during movement. When the carbon skateboard has a slight deflection, the vertical position of the laser distance sensor will make an adaptive adjustment for floating measurement to adapt to the slight deflection of the carbon skateboard and ensure the measurement accuracy.

[0014] Compared with the existing carbon skateboard measurement technologies, the beneficial effects of the present invention are as follows: 1. The structure of the carbon skateboard thickness measuring instrument of the present invention is simple. Most of the structures are flat parts and sheet metal parts, with low costs; there are no other power and control components, and no complex control system is required, and the overall stability is high.

[0015] 2. The carbon skateboard thickness measuring instrument of the present invention has the advantages of small volume, light weight, and convenient carrying. At the same time, the vertical position of the laser distance sensor will make an adaptive adjustment for floating measurement to adapt to the slight deflection of the carbon skateboard and ensure the measurement accuracy.

[0016] 3. For the carbon skateboard thickness measuring instrument of the present invention, the repeatability of multiple measurements of the same measured object is good, and the measurement results are consistent, solving the problem of very poor repeatability caused by individual techniques in manual measurement of the carbon skateboard thickness. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the working state of a carbon skateboard thickness measuring instrument.

[0018] Figure 2 It is a schematic structural diagram of the carbon skateboard thickness measuring instrument with the housing assembly removed.

[0019] Figure 3 It is a schematic structural diagram of the frame assembly.

[0020] Figure 4 It is a front view structural schematic diagram of the clamping assembly.

[0021] Figure 5 It is a schematic installation structural diagram of a single manual driving part in the clamping assembly.

[0022] Figure 6 It is a schematic structural diagram of the rotating assembly.

[0023] Figure 7 It is a schematic structural diagram of the support component.

[0024] Figure 8 It is a schematic structural diagram of the measurement component.

[0025] Figure 9 It is a schematic installation structure diagram of the encoder.

[0026] Among them, 1. Frame component; 101. Mounting plate; 102. Fixed plate; 103. Connecting column; 104. Bottom sealing plate; 105. Detection window; 106. Linear bearing; 2. Clamping component; 201. Rotating plate; 202. Traveling roller; 203. Lateral roller; 21. Rotating component; 211. Rotating seat; 212. Second pin; 213. Second connecting rod; 214. Arc hole; 215. Third pin; 216. Third connecting rod; 217. Connecting base; 218. Handle; 219. Guide block; 210. Fixed base; 3. Support component; 301. Guide post; 302. Top roller; 303. First connecting rod; 304. First tension spring; 4. Measurement component; 401. Laser distance sensor; 402. Mounting bracket; 403. First connecting plate; 404. Waist slot hole; 405. First pin; 406. Second tension spring; 407. Measurement roller; 408. Encoder; 409. Encoder roller; 5. Housing component; 6. Data recording and analysis module; 601. Power supply; 602. Main control board; 603. Start-stop button; 604. Display; 7. Channel; 8. Linear notch; 9. Spring mounting bracket; 10. Third tension spring; 11. Second connecting plate; 12. Carbon sliding plate. Specific embodiments

[0027] The following describes the specific embodiments of the present invention to facilitate those skilled in the art of this technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions created using the concept of the present invention are within the scope of protection.

[0028] Such as Figures 1 to 2As shown in the figure, the present invention provides a carbon skateboard thickness measuring instrument, which includes a frame assembly 1, a clamping assembly 2, a support assembly 3, a measuring assembly 4, a housing assembly 5, and a data recording and analysis module 6. The support assembly 3 is used to support the entire carbon skateboard thickness measuring instrument. The clamping assembly 2 is used to clamp the carbon skateboard 12 to be measured. The measuring assembly 4 is used to measure the carbon skateboard 12 to be measured. The housing assembly 5 plays a protective role. The data recording and analysis module 6 intuitively displays the thickness result of the carbon skateboard 12.

[0029] Specifically, as Figure 3 shown, as a specific setting method of the frame assembly 1, the frame assembly 1 includes a horizontally arranged mounting plate 101. On both sides in the width direction of the mounting plate 101, there is a vertically arranged fixing plate 102 respectively. Between the two fixing plates 102, there are two horizontally arranged connecting columns 103. The two connecting columns 103 are horizontally spaced along the length direction of the mounting plate 101. At the bottom of the two fixing plates 102 and the two connecting columns 103, there is a bottom sealing plate 104. At least one detection window 105 is provided on the bottom sealing plate 104. There are two linear bearings 106 on each connecting column 103.

[0030] As Figures 4 to 5 shown, the clamping assembly 2 includes two rotating plates 201 respectively rotatably connected to the bottoms of the two fixing plates 102. The two rotating plates 201 are symmetrically arranged with respect to the midline in the width direction of the mounting plate 101. Each rotating plate 201 is matched with a manual driving member. The two manual driving members drive the two rotating plates 201 to rotate around the bottom of the fixing plate 102. On the inner wall of each rotating plate 201, there is at least one traveling roller 202 and a lateral roller 203. The traveling roller 202 is used to tightly contact the bottom of the carbon skateboard 12, and the lateral roller 203 is used to tightly contact the side of the carbon skateboard 12.

[0031] Preferably, on the inner wall of each rotating plate 201, there is at least one guiding block 219. Each guiding block 219 is located above the lateral roller 203. The top of each guiding block 219 has a wedge-shaped structure with the small end facing down. The guiding block 219 can prevent the jamming problem that occurs when the thickness measuring instrument rebounds upward.

[0032] As Figure 7As shown, the support assembly 3 includes multiple guide posts 301. One guide post 301 is slidably arranged in each linear bearing 106, and a top roller 302 is provided at the bottom of each guide post 301. The tops of two guide posts 301 in each connecting column 103 are connected to a first connecting rod 303. One first tension spring 304 is connected to each end of each first connecting rod 303, and the other end of each first tension spring 304 is fixedly connected to the inner wall of the fixed plate 102 through a connecting shaft. When the first tension spring 304 is stretched, each top roller 302 is in tight contact with the top surface of the carbon skateboard 12.

[0033] As Figure 8 As shown, the measurement assembly 4 includes two laser distance sensors 401 located inside the frame assembly 1. The acquisition directions of each laser distance sensor 401 are respectively directed towards the two detection windows 105. Each laser distance sensor 401 is matched with a mounting bracket 402. A first connecting plate 403 is provided below each mounting bracket 402, and the bottom of each first connecting plate 403 passes through the bottom sealing plate 104 and is located inside the rotating plate 201. Two waist-shaped holes 404 are vertically provided on each first connecting plate 403, and a first pin 405 is arranged in each of the two waist-shaped holes 404. Each first connecting plate 403 is vertically slidably connected to the inner wall of the rotating plate 201 through the cooperation of the first pin 405 and the waist-shaped hole 404. A second tension spring 406 is arranged in one of the waist-shaped holes 404 on each first connecting plate 403, and the two ends of the second tension spring 406 are respectively fixedly connected to the inner wall of the rotating plate 201 and the first connecting plate 403. A measurement roller 407 that is in tight contact with the lower surface of the carbon skateboard 12 is provided at the bottom of each first connecting plate 403. The arrangement of the first connecting plate 403 and the mounting bracket 402 realizes the fixation of the laser distance sensor 401. The arrangement of the second tension spring 406 enables the measurement roller 407 to be in tight contact with the lower surface of the carbon skateboard 12.

[0034] The housing assembly 5 is used to cover the frame assembly 1, the measurement assembly 4, the clamping assembly 2, the support assembly 3, and the data recording and analysis module 6. Specifically, the housing assembly 5 can be selected to be assembled by multiple plastic blocks to cover the outside of the entire measuring instrument, playing a protective role. A channel 7 for the carbon skateboard 12 to pass through is provided at the bottom of the housing assembly 5, facilitating the measurement of the carbon skateboard 12.

[0035] The data recording and analysis module 6 includes a power supply 601, a main control board 602, a start-stop button 603, and a display 604 that are electrically connected to each other. The two laser distance sensors 401 are electrically connected to the main control board 602, and the display 604 is arranged on the outer side of the top of the housing assembly 5.

[0036] When the carbon skateboard thickness measuring instrument is working: the two rotating plates 201 are simultaneously opened in opposite directions by a manual driving member, then the measuring instrument is placed on the carbon skateboard 12, and then the measuring instrument is pressed down forcefully to make the lateral rollers 203 and the encoder rollers 409 closely adhere to the left and right side surfaces of the carbon skateboard 12; the supporting assembly 3 lifts the entire measuring instrument under the action of the first tension spring 304 to ensure that the traveling rollers 202 and the top rollers 302 closely adhere to the lower surface of the carbon skateboard 12; then the measuring instrument is manually pushed to move on the carbon skateboard 12, and the laser distance sensor 401 in the measuring assembly 4 measures the carbon skateboard 12. During the measurement process, the second tension spring 406 ensures that the measuring roller 407 can always adhere to the lower surface of the carbon skateboard 12 during movement. When the carbon skateboard 12 has a slight deflection, the vertical position of the laser distance sensor 401 will perform an adaptive adjustment for floating measurement to adapt to the slight deflection of the carbon skateboard 12 and ensure the measurement accuracy. The laser distance sensor 401 transmits the collected data to the data recording and analysis module 6, and after analysis, the data recording and analysis module 6 makes the measurement result intuitive through the display 604.

[0037] Specifically, as Figure 6 shown, each of the rotating plates 201 is rotatably connected to the bottom of the fixed plate 102 through a rotating assembly 21. Each rotating assembly 21 includes two rotating seats 211 and a second pin 212. The two rotating seats 211 are arranged on the fixed plate 102, and the second pin 212 is fixedly connected to the inner wall of the rotating plate 201 through a bushing. The two ends of the second pin 212 are respectively rotatably matched with the two rotating seats 211. The rotating assembly 21 enables the rotating plate 201 to rotate relative to the fixed plate 102.

[0038] Specifically, as Figure 5As shown in the figure, as a specific setting method of the manual driving member, each of the manual driving members includes two driving components, and the two driving components are respectively located on the two outer sides of the width direction of the mounting plate 101. Each driving component includes a fixed base 210 fixed on the upper end surface of the mounting plate 101. A second connecting rod 213 in an inverted "T" shape is arranged on the fixed base 210. The top end of the second connecting rod 213 passes through the housing assembly 5 and is located outside. At the same time, a linear notch 8 for the top end of the second connecting rod 213 to reciprocally slide is arranged at the top of the housing assembly 5. The middle of the bottom end of the second connecting rod 213 is rotatably connected to the fixed base 210. An arc-shaped hole 214 is arranged on one side of the bottom end of the second connecting rod 213. A third pin 215 is arranged in the arc-shaped hole 214, and the third pin 215 is fixedly connected to the fixed base 210. A third connecting rod 216 is hinged on the other side of the second connecting rod 213. The bottom of the third connecting rod 216 is hinged to the outer wall of the rotating plate 201 through a connecting base 217; a handle 218 is fixedly arranged between the top ends of the two second connecting rods 213 in the two manual driving members. A spring mounting bracket 9 is arranged on the inner side wall of each fixing plate 102, and a third tension spring 10 is connected to each spring mounting bracket 9; a second connecting plate 11 is arranged on the inner wall of each rotating plate 201, and the top of each second connecting plate 11 is located inside the fixing plate 102. The other end of the third tension spring 10 is fixedly connected to the top of the second connecting plate 11. The arrangement of the third tension spring 10 enables the two rotating plates 201 to rotate back to the reset position without external force.

[0039] The working principle of the manual driving member is as follows: When manually moving the handle 218, it drives the second connecting rod 213 to rotate relative to the fixed base 210, and then drives the third connecting rod 216 to rotate. The rotating third connecting rod 216 drives the two rotating plates 201 to rotate, realizing the opening of the clamping assembly 2. After releasing the handle 218, under the elastic force of the third tension spring 10, the two rotating plates 201 rotate back to the reset position, and the traveling rollers 202 and the lateral rollers 203 on the rotating plates 201 are tightly pressed against the surface of the carbon slide plate 12.

[0040] Preferably, as Figure 9As shown in the figure, an encoder 408 electrically connected to the main control board 602 is provided on any one of the rotating plates 201. An encoder roller 409 for tightly contacting the side surface of the carbon sliding plate 12 is provided at the output end of the encoder 408. The encoder 408 is usually axially connected to the encoder roller 409 and rotates as the encoder roller 409 rotates, thereby generating a series of pulse signals or digital signals. These signals can be received and decoded by the main control board 602 to determine the position and movement of the encoder roller 409. When it is found that the thickness of a certain part of the carbon sliding plate 12 is abnormal, the main control board 602 marks and records the abnormal position through the encoder 408, which is convenient for the staff to directly detect later and improves the measurement efficiency of the thickness of the carbon sliding plate 12.

[0041] In summary, the carbon sliding plate thickness measuring instrument of the present invention has the advantages of small volume, light weight, convenient to carry, good repeatability of multiple measurements of the same measured object, and good consistency of measurement results, and solves the problem of very poor repeatability caused by individual techniques in manual measurement of the thickness of the carbon sliding plate.

Claims

1. A carbon skateboard thickness measuring instrument, characterized in that, It includes a frame assembly, a clamping assembly, a support assembly, a measurement assembly, a housing assembly and a data recording and analysis module; The frame assembly includes a horizontally arranged mounting plate. On both sides of the mounting plate in the width direction, there is a fixed plate vertically arranged respectively. Between the two fixed plates, there are two connecting columns horizontally arranged. The two connecting columns are horizontally spaced along the length direction of the mounting plate. At the bottom of the two fixed plates and the two connecting columns, there is a bottom sealing plate, and at least one detection window is arranged on the bottom sealing plate. There are two linear bearings on each connecting column; The clamping assembly includes two rotating plates respectively rotatably connected to the bottoms of the two fixed plates. The two rotating plates are symmetrically arranged with respect to the midline in the width direction of the mounting plate. Each rotating plate is matched with a manual driving member, and the two manual driving members drive the two rotating plates to rotate around the bottom of the fixed plate. On the inner wall of each rotating plate, there is at least one traveling roller and a lateral roller. The traveling roller is used to tightly contact the bottom of the carbon skateboard, and the lateral roller is used to tightly contact the side of the carbon skateboard; The support assembly includes multiple guide columns. One guide column is slidably arranged in each linear bearing. At the bottom of each guide column, there is a top roller. At the top of the two guide columns in each connecting column, there is a first connecting rod. At both ends of each first connecting rod, there is a first tension spring. The other end of each first tension spring is fixedly connected to the inner wall of the fixed plate through a connecting shaft. When the first tension spring is stretched, each top roller tightly contacts the top surface of the carbon skateboard; The measurement assembly includes two laser distance sensors located inside the frame assembly. The acquisition directions of each laser distance sensor respectively face the two detection windows. Each laser distance sensor is matched with a mounting bracket. Below each mounting bracket, there is a first connecting plate. The bottom of each first connecting plate passes through the bottom sealing plate and is located inside the rotating plate. On each first connecting plate, there are two vertical waist-shaped holes. In each of the two waist-shaped holes, there is a first pin. Each first connecting plate is vertically slidably connected to the inner wall of the rotating plate through the cooperation of the first pin and the waist-shaped hole. In one of the waist-shaped holes on each first connecting plate, there is a second tension spring. The two ends of the second tension spring are respectively fixedly connected to the inner wall of the rotating plate and the first connecting plate. At the bottom of each first connecting plate, there is a measurement roller that tightly contacts the lower surface of the carbon skateboard; The housing assembly is used to cover the frame assembly, the measurement assembly, the clamping assembly, the support assembly and the data recording and analysis module; The data recording and analysis module includes a power supply, a main control board, a start-stop button and a display that are electrically connected to each other. The two laser distance sensors are electrically connected to the main control board, and the display is arranged on the outer side of the top of the housing assembly.

2. The carbon skateboard thickness measuring instrument according to claim 1, wherein Each of the rotating plates is rotatably connected to the bottom of the fixed plate through a rotating assembly. Each rotating assembly includes two rotating seats and a second pin. The two rotating seats are arranged on the fixed plate. The second pin is fixed to the inner wall of the rotating plate through a bushing, and the two ends of the second pin are respectively in rotational cooperation with the two rotating seats.

3. The carbon skateboard thickness measuring instrument according to claim 2, characterized in that, Each manual driving member includes two driving assemblies. The two driving assemblies are respectively located on the two outer sides in the width direction of the mounting plate. Each driving assembly includes a fixed base fixed to the upper end surface of the mounting plate. A second connecting rod in an inverted "T" shape is arranged on the fixed base. The top end of the second connecting rod passes through the housing assembly and is located outside. The middle of the bottom end of the second connecting rod is rotatably connected to the fixed base. An arc-shaped hole is arranged on one side of the bottom end of the second connecting rod. A third pin is arranged in the arc-shaped hole and is fixedly connected to the fixed base. A third connecting rod is hinged to the other side of the second connecting rod. The bottom of the third connecting rod is hinged to the outer wall of the rotating plate through a connecting base; a handle is fixedly arranged between the top ends of the two second connecting rods of the two manual driving members.

4. The carbon skateboard thickness measuring instrument according to claim 3, characterized in that An encoder electrically connected to the main control board is arranged on any one of the rotating plates. An encoder roller for tightly contacting the side surface of the carbon sliding plate is arranged at the output end of the encoder.

5. The carbon skateboard thickness measuring instrument according to claim 1, characterized in that A channel for the carbon sliding plate to pass through is arranged at the bottom of the housing assembly.

6. The carbon skateboard thickness measuring instrument according to claim 1, wherein A linear notch for the top end of the second connecting rod to reciprocally slide is arranged at the top of the housing assembly.

7. The carbon skateboard thickness measuring instrument according to claim 1, wherein A spring mounting bracket is arranged on the inner side wall of each fixed plate, and a third tension spring is connected to each spring mounting bracket; a second connecting plate is arranged on the inner wall of each rotating plate, and the top of each second connecting plate is located inside the fixed plate. The other end of the third tension spring is fixedly connected to the top of the second connecting plate.

8. The carbon skateboard thickness measuring instrument according to claim 1, characterized in that, At least one guiding block is arranged on the inner wall of each rotating plate. Each guiding block is located above the lateral roller, and the top of each guiding block has a wedge-shaped structure with the small end facing down.

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