An angle measuring device for construction track vehicles

Abstract

This invention discloses an angle measuring device for a construction track vehicle, relating to the field of track measurement technology. It includes a mounting base with a mounting cylinder on it, and a moving mechanism on the mounting base. The moving mechanism includes a slide block slidably mounted on the mounting base, a rotating shaft rotatably mounted on the slide block, and a roller assembly at the bottom end of the rotating shaft. The roller assembly consists of a roller support and two roller ends. Inside the mounting cylinder is a center-of-gravity mechanism, including a mounting platform inside the mounting cylinder. Spherical contact parts are arrayed and slidably arranged on the mounting platform, forming a complete spherical area. Contact spheres are connected in a ball joint within the spherical area, and a suspension sphere is located at the bottom end of each contact sphere. Deflection contact rods are arrayed and deflected inside the mounting cylinder and located outside the suspension spheres. This invention allows for comprehensive angle measurement of the rails, including horizontal and tilt angles, by moving the device along the track.

Description

Technical Field

[0001] This invention relates to the field of track measurement technology, and in particular to an angle measuring device for a construction track vehicle. Background Technology

[0002] Train tracks are the infrastructure of railway transportation systems, used to support and guide train movement. They consist of multiple components, each playing a different role in ensuring the safe and smooth operation of trains. During track laying, due to geographical reasons, train tracks may have an inclination angle between the origin and destination, and the spacing between tracks may vary slightly along each section of the route. In existing technologies, track-carrying vehicles moving on the tracks can only perform simple horizontal angle measurements. For the inclination angle of tracks at curves and on slopes with a certain inclination angle, existing technologies do not offer effective solutions for comprehensive measurement. Therefore, this invention proposes a track-car angle measuring device that, by moving the track-car on the track, can perform comprehensive angle measurements of the tracks, including horizontal and inclination angles. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention allows for comprehensive angle measurements of the rails, including horizontal and tilt angles, by moving the rails along the track.

[0004] The present invention provides an angle measuring device for a construction track vehicle, comprising a mounting base, a mounting cylinder on the mounting base, and a moving mechanism on the mounting base. The moving mechanism includes a slide block slidably mounted on the mounting base, a rotating shaft rotatably mounted on the slide block, and a roller assembly at the bottom end of the rotating shaft. The roller assembly consists of a roller support and two roller ends. A center-of-gravity mechanism is located inside the mounting cylinder, including a mounting platform inside the mounting cylinder. Spherical contact parts are arranged in an array and slidably on the mounting platform, forming a complete spherical area. Contact spheres are connected in a ball joint within the spherical area, and a suspension sphere is located at the bottom end of each contact sphere. Deflection contact rods are arranged in an array and deflected position inside the mounting cylinder and outside the suspension spheres. A pressure detector is located between the deflection contact rods and the inner wall of the mounting cylinder to output a pressure signal feedback signal for the deflection contact rods.

[0005] Furthermore, the moving mechanism includes a spring disposed between the slide and the mounting base, an angle detector disposed on the slide for outputting a feedback angle signal of the rotating shaft, a mounting bracket disposed at the bottom end of the rotating shaft, and a motor and a sweeping part disposed on one side of the mounting bracket, the motor being used to drive the sweeping part for sweeping away debris on the track.

[0006] Furthermore, the mounting frame is provided with an inspection mechanism, which includes an electric cylinder one mounted on the mounting frame, a detection mounting frame mounted on the telescopic rod of the electric cylinder one, an electric cylinder two mounted on the detection mounting frame, a detection contact shaft and a displacement sensor telescopically mounted on the telescopic rod of the electric cylinder two, the detection contact shaft contacts the inner end face of the roller end, and the displacement sensor is used to output a feedback signal of the telescopic movement of the detection contact shaft to check the distance between the ends of the two rollers.

[0007] Furthermore, the roller assembly includes electric cylinders three disposed at both ends of the mounting frame, a traveling frame disposed on the telescopic rod of electric cylinders three, roller ends rotatably mounted on the traveling frame, roller support portion located between the two roller ends, and grooves respectively opened at both ends of the roller support portion, the end face of the roller end slidingly engaging with the groove on the roller support portion; motor two disposed inside the roller support portion, gear two disposed on the output shaft of motor two, and gear three rotatably mounted inside the roller support portion, gear three meshing with gear two, and lead screw three rotatably disposed inside the roller support portion, lead screw three fixedly connected to gear three, the two ends of lead screw three forming a helical pair with the inner end face of the roller end respectively.

[0008] Furthermore, a transfer cylinder is provided at the top of the inside of the mounting cylinder, a clamping cylinder is provided on the telescopic rod of the transfer cylinder, and an electromagnetic sliding clamping plate is provided on the clamping cylinder for clamping and fixing the top of the contact ball so as to transfer the contact ball.

[0009] Furthermore, the center of gravity mechanism includes a control motor mounted on a mounting platform, a control gear mounted on the output shaft of the control motor, and a gear ring rotatably mounted on the mounting platform, the gear ring meshing with the control gear; a movable lead screw and a guide rod are fixedly connected to the spherical contact portion, the movable lead screw and guide rod are movably mounted on the mounting platform, and a movable gear is rotatably mounted on the mounting platform, the inner side of the movable gear and the movable lead screw forming a helical pair, and the movable gear meshing with the gear ring.

[0010] Furthermore, a second spring is provided between the deflection contact rod and the inner wall of the mounting cylinder. The suspension ball deflects to apply pressure to the deflection contact rod, and the second spring is compressed. The pressure detector outputs a feedback signal of the pressure on the second spring.

[0011] Furthermore, a surface inspection mechanism is provided inside the mounting cylinder for detecting the surface quality of the spherical area and the contact sphere. The surface inspection mechanism includes an inspection turntable rotatably installed inside the mounting cylinder, an inspection cylinder one is provided on the inspection turntable, an inspection cylinder two is provided on the telescopic rod of the inspection cylinder one, an inspection cylinder three is also provided on the inspection turntable, ultrasonic devices are respectively provided on the telescopic rods of the inspection cylinder three and the inspection cylinder two, a motor four is provided on the mounting cylinder, and a gear four is provided on the output shaft of the motor four, which meshes with the inspection turntable.

[0012] Furthermore, a reset mechanism is provided at the bottom of the mounting cylinder. The reset mechanism includes an angle motor located at the bottom of the mounting cylinder and an angle disk rotatably mounted on the mounting cylinder. The angle disk is driven by the angle motor. A reset electric cylinder one is provided on the angle disk. A reset electric cylinder two is provided on the telescopic rod of the reset electric cylinder one. A reset frame is provided on the telescopic rod of the reset electric cylinder two. The reset frame is located on the outside of each deflection contact rod.

[0013] The beneficial effects of this invention compared with the prior art are: (1) By installing the roller support and roller end on the rail, the position of the roller end can be adjusted, that is, it can be adjusted according to the width of the rail. Furthermore, after a long period of use and movement, the roller end wears due to friction with the rail. Therefore, the position of the roller end can be adjusted according to the degree of wear. Specifically, by working the second motor, the third gear rotates, and then the third screw and the third gear rotate, so that the roller ends at both ends of the roller support move, thereby completing the position adjustment. At the same time, the third electric cylinder also controls the traveling frame to move synchronously to adapt to the position change of the roller end; (2) At the angle change of the rail, the roller end can be adjusted. The wheel support and roller end move along the path of the track. In the angled area, the shaft will change angle. The angle detector can output feedback shaft angle information, so as to record and analyze the entire travel trajectory. (3) The center of gravity of the suspended ball shifts, which squeezes and pushes each deflection contact rod on the outside, and then the spring is compressed. One or more deflection contact rods are squeezed. The pressure detector outputs feedback pressure signal, and then the tilt angle of the suspended ball is analyzed. It should be noted that the travel process needs to be slow. The test point can be marked. Stop moving at the test point. After the suspended ball is stable, perform data analysis and record. The above measurement process can also be applied to the slope area. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the mounting frame structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the slide structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the roller assembly structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the roller support structure of the present invention;

[0019] Figure 6 This is a schematic diagram of the roller end structure of the present invention;

[0020] Figure 7 This is a schematic diagram of the mounting cylinder structure of the present invention;

[0021] Figure 8 This is a schematic diagram of the internal structure of the mounting cylinder of the present invention;

[0022] Figure 9 This is a schematic diagram of the mounting platform structure of the present invention;

[0023] Figure 10 This is a schematic diagram of the suspended sphere structure of the present invention;

[0024] Figure 11 This is a schematic diagram of the spherical contact part structure of the present invention.

[0025] Reference numerals: 1. Mounting base; 2. Angle detector; 3. Mounting cylinder; 4. Slide; 5. Rotating shaft; 6. Mounting bracket; 7. Motor 1; 8. Sweeping section; 9. Spring 1; 10. Electric cylinder 1; 11. Detection mounting bracket; 12. Electric cylinder 2; 13. Detection contact shaft; 14. Electric cylinder 3; 15. Traveling frame; 16. Roller support section; 17. Roller end; 18. Gear 2; 19. Motor 2; 20. Gear 3; 21. Lead screw 3; 22. Transfer electric cylinder; 23. Motor 4; 24. Gear 4; 25. Inspection cylinder 26. Check cylinder one; 27. Check cylinder two; 28. Check cylinder three; 29. ​​Clamping cylinder; 30. Electromagnetic sliding clamp; 31. Angle motor; 32. Angle disc; 33. Reset cylinder one; 34. Reset cylinder two; 35. Reset frame; 36. Mounting platform; 37. Gear ring; 38. Control motor; 39. Control gear; 40. Contact ball; 41. Suspension ball; 42. Moving lead screw; 43. Moving gear; 44. Spherical contact part; 45. Deflection contact rod; 46. Spring two; 47. Guide rod. Detailed Implementation

[0026] Example: Figures 1 to 11 As shown, a construction track vehicle angle measuring device includes a mounting base 1, a mounting cylinder 3 on the mounting base 1, and a moving mechanism on the mounting base 1. The moving mechanism includes a slide block 4 slidably mounted on the mounting base 1, a rotating shaft 5 rotatably mounted on the slide block 4, and a roller assembly at the bottom end of the rotating shaft 5. The roller assembly consists of a roller support part 16 and two roller ends 17. A center of gravity mechanism is provided inside the mounting cylinder 3. The center of gravity mechanism includes a mounting platform 36 inside the mounting cylinder 3. Spherical contact parts 44 are arrayed and slidably arranged on the mounting platform 36. The spherical contact parts 44 are joined to form a complete spherical area. Contact balls 40 are connected in a ball pair in the spherical area. A suspension ball 41 is provided at the bottom end of the contact ball 40. Deflection contact rods 45 are arrayed and deflected inside the mounting cylinder 3 and located outside the suspension ball 41. A pressure detector is provided between the deflection contact rods 45 and the inner wall of the mounting cylinder 3 to output a pressure signal feedback of the deflection contact rods 45.

[0027] The moving mechanism includes a spring 9 disposed between the slide 4 and the mounting base 1. An angle detector 2 is disposed on the slide 4 to output a feedback angle signal of the rotating shaft 5. A mounting bracket 6 is disposed at the bottom of the rotating shaft 5. A motor 7 and a sweeping part 8 are disposed on one side of the mounting bracket 6. The motor 7 drives the sweeping part 8 to sweep away debris on the track. An inspection mechanism is disposed on the mounting bracket 6. The inspection mechanism includes an electric cylinder 10 disposed on the mounting bracket 6. A detection mounting bracket 11 is disposed on the telescopic rod of the electric cylinder 10. An electric cylinder 12 is disposed on the detection mounting bracket 11. A detection contact shaft 13 and a displacement sensor are telescopically disposed on the telescopic rod of the electric cylinder 12. The detection contact shaft 13 contacts the inner end face of the roller end 17. The displacement sensor outputs a feedback telescopic signal of the detection contact shaft 13 to check the two roller ends. The spacing between parts 17; the roller assembly includes electric cylinders 14 at both ends of the mounting frame 6, a traveling frame 15 on the telescopic rod of the electric cylinders 14, roller ends 17 rotatably mounted on the traveling frame 15, roller support parts 16 located between the two roller ends 17, and grooves respectively opened at both ends of the roller support parts 16, the end faces of the roller ends 17 slidingly engaging with the grooves on the roller support parts 16; a motor 19 is provided inside the roller support parts 16, a gear 18 is provided on the output shaft of the motor 19, and a gear 20 is rotatably mounted inside the roller support parts 16, the gear 20 meshing with the gear 18, and a lead screw 21 is also rotatably provided inside the roller support parts 16, the lead screw 21 is fixedly connected to the gear 20, one end of the lead screw 21 and the inner end face of the roller ends 17 forming a helical pair.

[0028] The top of the inner part of the mounting cylinder 3 is equipped with a transfer electric cylinder 22. The telescopic rod of the transfer electric cylinder 22 is equipped with a clamping cylinder 29. The clamping cylinder 29 is equipped with an electromagnetic sliding clamping plate 30, which is used to clamp and fix the top of the contact ball 40 so as to transfer the contact ball 40.

[0029] The center of gravity mechanism includes a control motor 38 mounted on a mounting platform 36, a control gear 39 mounted on the output shaft of the control motor 38, and a gear ring 37 rotatably mounted on the mounting platform 36, which meshes with the control gear 39; a movable lead screw 42 and a guide rod 47 are fixedly connected to the spherical contact part 44, the movable lead screw 42 and the guide rod 47 are movably mounted on the mounting platform 36, and a movable gear 43 is rotatably mounted on the mounting platform 36, the inner side of the movable gear 43 and the movable lead screw 42 form a helical pair, and the movable gear 43 meshes with the gear ring 37; a second spring 46 is provided between the deflection contact rod 45 and the inner wall of the mounting cylinder 3, the suspended ball 41 deflects to apply pressure to the deflection contact rod 45, the second spring 46 is compressed, and the pressure detector outputs a feedback signal of the pressure on the second spring 46.

[0030] The mounting cylinder 3 is equipped with a surface inspection mechanism for inspecting the surface quality of the spherical area and the contact sphere 40. The surface inspection mechanism includes an inspection turntable 25 rotatably mounted inside the mounting cylinder 3. An inspection cylinder 26 is mounted on the inspection turntable 25. An inspection cylinder 27 is mounted on the telescopic rod of the inspection cylinder 26. An inspection cylinder 28 is also mounted on the inspection turntable 25. An ultrasonic device is mounted on the telescopic rods of the inspection cylinders 28 and 27 respectively. A motor 23 is mounted on the mounting cylinder 3. A gear 24 is mounted on the output shaft of the motor 23. The gear 24 meshes with the inspection turntable 25.

[0031] A reset mechanism is provided at the bottom of the mounting cylinder 3. The reset mechanism includes an angle motor 31 located at the bottom of the mounting cylinder 3 and an angle disk 32 rotatably mounted on the mounting cylinder 3. The angle disk 32 is driven by the angle motor 31. A reset electric cylinder 33 is provided on the angle disk 32. A reset electric cylinder 34 is provided on the telescopic rod of the reset electric cylinder 33. A reset frame 35 is provided on the telescopic rod of the reset electric cylinder 34. The reset frame 35 is located outside each deflection contact rod 45.

[0032] Operating principle: In this embodiment, the rollers move on the track. They are fixed to the rail by the roller support 16 and the roller end 17. The position of the roller end 17 can be adjusted according to the width of the rail. Furthermore, after a period of use, the roller end 17 wears due to friction with the rail over a long period of time. Therefore, the position of the roller end 17 can be adjusted according to the degree of wear. Specifically, the operation of the motor 2 19 causes the gear 3 20 to rotate, which in turn causes the lead screw 3 21 and the gear 3 20 to rotate, so that the roller end 17 at both ends of the roller support 16 can move, thereby completing the position adjustment. At the same time, the electric cylinder 3 14 also controls the traveling frame 15 to move synchronously to adapt to the position change of the roller end 17.

[0033] When inspecting the contact surface between the roller end 17 and the track, the position of the detection mounting bracket 11 is controlled by electric cylinder 10, and electric cylinder 12 controls the detection contact shaft 13 to contact the inner end face of the roller end 17. The displacement sensor is used to output feedback signals of the extension and retraction of the detection contact shaft 13 to check the distance between the two roller ends 17.

[0034] Furthermore, during movement, motor 7 operates, and sweeping unit 8 rotates to sweep away debris on the track; and during movement, angle detector 2 can output feedback angle information of rotating shaft 5. For example, at the point where the track angle changes, roller support 16 and roller end 17 move along the track path. In the angled area, rotating shaft 5 will change angle, thereby allowing the entire travel trajectory to be recorded and analyzed.

[0035] Furthermore, during movement, the slide 4 can adapt to slight changes in the track spacing, meaning the slide 4 can move on the mounting base 1. In inclined sections, such as curves, the outer track is positioned higher than the inner track, i.e., the outer track is higher, which can counteract the centrifugal force generated when the train turns, making the train's center of gravity more stable. In this section, the tilt angle can be measured. At this time, the center of gravity of the suspension ball 41 shifts, squeezing and pushing each of the outer deflection contact rods 45, thereby compressing the spring 46. The pressure detector outputs a feedback pressure signal, and one or more deflection contact rods 45 are squeezed. The larger the tilt angle, the greater the force on the deflection contact rods 45. According to the mechanical principle, the tilt angle of the suspension ball 41 can be analyzed. It should be noted that the movement needs to be slow. The measurement point can be marked, and the movement should be stopped at the measurement point. After the suspension ball 41 is stable, the data can be analyzed and recorded. The above measurement process can also be applied to slope areas.

[0036] Furthermore, to ensure the deflection of the suspended ball 41, it is necessary to guarantee its deflection lubrication performance. Therefore, the lubricating oil between the contact ball 40 and the spherical contact portion 44 needs to be changed regularly. Specifically, for easy replacement and inspection, the motor 38 can be controlled to rotate the gear ring 37, thereby moving the lead screw 42 to separate the spherical contact portion 44. Before this, the suspended ball 41 and the contact ball 40 need to be restored to their original positions, that is, their axes should coincide with the axis of the mounting cylinder 3. The angle motor 31 controls the angle disk 32 to rotate, the reset electric cylinder 1 33 controls the height of the reset frame 35, and the reset electric cylinder 2 34 controls the radial movement of the reset frame 35 to push the deflected contact rod 45 under force to reset, thereby resetting the suspended ball 41. The transfer electric cylinder 22 controls the clamping cylinder 29 to engage with the top of the contact ball 40, and the electromagnetic sliding clamp 30 clamps the top of the contact ball 40. Then, the contact ball 40 and the suspended ball 41 are transferred.

[0037] Operators can clean the surface of the contact ball 40 and the inner spherical area of ​​the ball-to-spherical contact portion 44, removing the dirty oil and then applying new lubricating oil. The movement of the inspection cylinder 27 can be controlled by the inspection cylinder 1 26, which in turn controls the ultrasonic device to move to the inner side of the ball-to-spherical contact portion 44. The rotation of the inspection turntable 25 can be controlled by the motor 4 23 to perform surface inspection on the inner spherical area of ​​the ball-to-spherical contact portion 44. The ultrasonic device can be controlled by the inspection cylinder 3 28 to inspect the surface of the contact ball 40, ensuring smooth movement between the contact ball 40 and the ball-to-spherical contact portion 44 and ensuring smooth offset of the suspended ball 41.

Claims

1. A building track car angle measuring device, comprising a mounting seat (1), a mounting cylinder (3) is arranged on the mounting seat (1), characterized in that: The mounting seat (1) is provided with a moving mechanism, the moving mechanism includes a sliding seat (4) slidingly arranged on the mounting seat (1), a rotating shaft (5) is rotatably arranged on the sliding seat (4), a roller assembly is arranged at the bottom end of the rotating shaft (5), the roller assembly is composed of a roller supporting part (16) and two roller end parts (17); the moving mechanism further includes a spring (9) arranged between the sliding seat (4) and the mounting seat (1), an angle detector (2) is arranged on the sliding seat (4) and is used for outputting an angle signal of the rotating shaft (5); a barycenter mechanism is arranged in the mounting cylinder (3), the barycenter mechanism includes a mounting table (36) arranged in the mounting cylinder (3), spherical surface abutting parts (44) are arranged on the mounting table (36) in an array and slidingly, the spherical surface abutting parts (44) are abutted to form a complete spherical surface area, a contact ball (40) is connected with the spherical surface area in a ball pair, a hanging ball (41) is arranged at the bottom end of the contact ball (40); a deflection contact rod (45) is arranged in the mounting cylinder (3) and is arranged in an array and deflected outside the hanging ball (41), a pressure detector is arranged between the deflection contact rod (45) and the inner wall of the mounting cylinder (3) and is used for outputting a pressure signal of the deflection contact rod (45); The barycenter mechanism includes a control motor (38) arranged on the mounting table (36), a control gear (39) is arranged on the output shaft of the control motor (38), and a gear ring (37) is rotatably arranged on the mounting table (36), the gear ring (37) is engaged with the control gear (39); the moving screw rod (42) and the guide rod (47) are fixedly connected to the spherical surface abutting part (44), the moving screw rod (42) and the guide rod (47) are movably arranged on the mounting table (36), and a moving gear (43) is rotatably arranged on the mounting table (36), the inside of the moving gear (43) and the moving screw rod (42) form a screw pair, and the moving gear (43) is engaged with the gear ring (37).

2. An angle measuring device for a track car according to claim 1, characterized in that: The bottom end of the rotating shaft (5) is provided with a mounting frame (6), one side of the mounting frame (6) is provided with a motor (7) and a sweeping part (8), the motor (7) is used for driving the sweeping part (8) to sweep the sundries on the track.

3. An angle measuring device for a track car according to claim 2, characterized in that: An inspection mechanism is arranged on the mounting frame (6), the inspection mechanism includes a first electric cylinder (10) arranged on the mounting frame (6), a detection mounting frame (11) is arranged on the telescopic rod of the first electric cylinder (10), a second electric cylinder (12) is arranged on the detection mounting frame (11), a detection contact shaft (13) and a displacement sensor are telescopically arranged on the telescopic rod of the second electric cylinder (12), the detection contact shaft (13) is in contact with the inner side end face of the roller end part (17), and the displacement sensor is used for outputting a telescopic signal of the detection contact shaft (13) to check the spacing between the two roller end parts (17).

4. The angle measuring device for a track car according to claim 1, wherein: The roller assembly includes electric cylinder three (14) arranged at both ends of the mounting frame (6), the travel frame (15) is arranged on the telescopic rod of the electric cylinder three (14), the roller end (17) is rotatably mounted on the travel frame (15), the roller support part (16) is located between the two roller ends (17), and grooves are formed at both ends of the roller support part (16), and the end surface of the roller end (17) is in sliding fit with the groove on the roller support part (16); the motor two (19) is arranged in the roller support part (16), the gear two (18) is arranged on the output shaft of the motor two (19), the gear three (20) is rotatably mounted in the roller support part (16), the gear three (20) is engaged with the gear two (18), and the screw rod three (21) is rotatably arranged in the roller support part (16), the screw rod three (21) is fixedly connected with the gear three (20), and the both ends of the screw rod three (21) are respectively connected with the inner side end surfaces of the roller ends (17) to form a screw pair.

5. The angle measuring device for a track car according to claim 1, wherein: The inside top end of the mounting cylinder (3) is provided with a transfer cylinder (22), the clamping cylinder (29) is arranged on the telescopic rod of the transfer cylinder (22), the electromagnetic sliding clamping plate (30) is arranged on the clamping cylinder (29), and the top end of the contact ball (40) is clamped and fixed, so as to transfer the contact ball (40).

6. An angle measuring device for a track car according to claim 1, wherein: The spring two (46) is arranged between the deflection contact rod (45) and the inner wall of the mounting cylinder (3), the suspension ball (41) is deflected to press the deflection contact rod (45), the spring two (46) is compressed, and the pressure detector outputs the pressure signal of the compressed spring two (46).

7. The angle measuring device for a track car according to claim 1, wherein: The mounting cylinder (3) is provided with a surface inspection mechanism inside, which is used for detecting the surface quality of the spherical surface area and the contact ball (40); the surface inspection mechanism comprises an inspection turntable (25) rotatably arranged in the mounting cylinder (3), an inspection cylinder one (26) arranged on the inspection turntable (25), an inspection cylinder two (27) arranged on the telescopic rod of the inspection cylinder one (26), an inspection cylinder three (28) arranged on the inspection turntable (25), ultrasonic devices arranged on the telescopic rods of the inspection cylinder three (28) and the inspection cylinder two (27), a motor four (23) arranged on the mounting cylinder (3), a gear four (24) arranged on the output shaft of the motor four (23), and the gear four (24) engaged with the inspection turntable (25).

8. An angle measuring device for a track car according to claim 1, wherein: The inside bottom end of the mounting cylinder (3) is provided with a reset mechanism, the reset mechanism comprises an angle motor (31) arranged at the bottom end of the mounting cylinder (3), an angle disc (32) rotatably arranged on the mounting cylinder (3), the angle disc (32) driven by the angle motor (31), a reset cylinder one (33) arranged on the angle disc (32), a reset cylinder two (34) arranged on the telescopic rod of the reset cylinder one (33), a reset frame (35) arranged on the telescopic rod of the reset cylinder two (34), and the reset frame (35) located outside each deflection contact rod (45).

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