A thickness measurement method and thickness gauge for large-span steel wheels

Abstract

The application relates to the technical field of wheel measurement, and discloses a thickness measurement method and a thickness gauge for large-span steel wheels, which solve the problems that when a plurality of steel wheels assembled on a moving mechanism are subjected to tread wear detection, the traditional detection method is low in efficiency, large in error caused by dependence on manual experience, and difficult to accurately measure due to space limitation, the slide and the steel wheel are kept synchronous movement through control of a following mechanism, the measuring head is sent to one side of the tread at an upward oblique angle by means of a stretching rod mechanism to avoid the shielding structure outside the steel wheel, and the thickness of the steel wheel in the dynamic state is detected, the plurality of treads of the steel wheel can be simultaneously detected in the process, and after the detection is completed, the positions and states of the stretching rod mechanism, the attaching frame and the slide are reset in sequence, and the steel wheels in the front can be comprehensively detected in sequence through repetition of the above process.

Description

Technical Field

[0001] This invention relates to the field of wheel measurement technology, specifically to a method and thickness gauge for measuring the thickness of large-span steel wheels. Background Technology

[0002] Large-span steel wheels are special mobile mechanisms that are often used to carry large loads. Common examples include railway transport vehicles, mining transport vehicles, heavy-duty tractors, and gantry cranes.

[0003] The main inspection of steel wheels is the wear thickness of the wheel tread. The standard requires that the wear of the wheel tread should not exceed 15% of the original thickness. The principle of tread inspection is to measure the distance between two treads passing through the center of the wheel and compare it with the original tread distance to determine the wear thickness of the tread.

[0004] The moving mechanism is equipped with multiple steel wheels. When inspecting the tread wear of these steel wheels, traditional inspection methods require manual measurement of each wheel, which consumes a lot of time and manpower. For example, for railway transport cars, dozens or even hundreds of wheels need to be inspected, and the inspection efficiency is difficult to meet the actual needs. Moreover, manual inspection depends on the accuracy of the inspection tools and the experience of the operators, which can easily lead to inspection errors due to human factors. In addition, steel wheels are usually installed on complex mechanical structures, and the inspection is limited by space. For example, on gantry cranes, the wheels are located high and the surrounding space is narrow, which increases the difficulty of inspection and makes it difficult to make accurate measurements. Summary of the Invention

[0005] The purpose of this invention is to provide a method and thickness gauge for measuring the thickness of large-span steel wheels, which solves the problems of low efficiency, large errors due to reliance on manual experience, and difficulty in accurate measurement due to space limitations when performing tread wear detection on multiple steel wheels mounted on a moving mechanism.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large-span steel wheel thickness gauge, comprising: a slide mechanism, the slide mechanism having a slide base, a following mechanism and an assembly mechanism being mounted on the slide base, and two extension rod mechanisms being symmetrically mounted on the assembly mechanism on both sides of the following mechanism; and two probes, the two probes being correspondingly mounted on the extended ends of the two extension rod mechanisms.

[0007] The accompanying mechanism includes a mounting frame and a push rod lock. When the mounting frame is lying flat, the steel wheel passes over it. When the mounting frame is standing up, it fits against one side of the wheel rim of the steel wheel, forcing the slide to move synchronously with the steel wheel. The probe extends to one side of the tread surface of the steel wheel at a preset angle through the extension rod mechanism, so that the two probes are symmetrical with respect to the wheel center of the dynamic steel wheel, forming a measurement area for tread thickness wear.

[0008] It also includes a first protective mechanism and a second protective mechanism. The first protective mechanism works with the mounting bracket to force the extension rod mechanism, which has failed to control the reset, to reset. The second protective mechanism works with the moving follow-up mechanism to force the mounting bracket, which has failed to control the reset, to reset.

[0009] As a further description of the above technical solution: the following mechanism also includes a rotating shaft and a push rod lock. The rotating shaft is rotatably mounted on the slide via a bearing. A sleeve is fitted at one end of the rotating shaft. A through rod is provided on one side of the sleeve and rotatably extends to the other end of the rotating shaft. A pin is inserted between the sleeve and the rotating shaft. The mounting bracket is fixedly mounted on the sleeve. The push rod lock is fixed on the slide via a mounting base. The push rod lock locks the rotation state of the rotating shaft. A torsion spring is provided between the rotating shaft and the bearing. A limit block is fixedly provided on the arc surface of the rotating shaft.

[0010] As a further description of the above technical solution: the mounting bracket is equipped with multiple rollers.

[0011] As a further description of the above technical solution: the slide mechanism includes a slide rail, which is fixedly mounted below one side of the rail and parallel to the rail. The slide block slides on the slide rail. A reset belt is mounted on the lower side of the slide rail along the length direction. The upper side of the reset belt is fixedly connected to the lower surface of the slide block. The reset belt is supported by two pulleys A on the lower side of the slide rail. A reset motor is provided on one side of one of the pulleys A.

[0012] As a further description of the above technical solution: the assembly mechanism includes a plate base, which is fixedly mounted on one side of the slide. A support rod is fixedly provided on the upper side of the plate base. The support rod tilts and fixes the two extension rod mechanisms. A side support frame is also provided on one side of the support rod. The side support frame is rotatably connected with the support rod as a bearing. A drive rod is also rotatably mounted on one side of the side support frame. The drive rod is driven by a stepping motor fixedly mounted on the side support frame, so that the drive rod further drives the two extension rod mechanisms to work synchronously.

[0013] As a further description of the above technical solution: the extension rod mechanism includes an outer sleeve and an inner sleeve, the inner sleeve is nested inside the outer sleeve, the upper end of the outer sleeve is provided with a control component for driving the inner sleeve to extend, the outer sleeve is provided with a tension spring for pulling the inner sleeve back, and the probe is fixed to the outer end of the inner sleeve.

[0014] As a further description of the above technical solution: the control component includes a cover fixedly mounted on the side of the outer sleeve. A gear is rotatably mounted on the inner side of the cover via a bearing. The gear passes through the inner ring of the bearing via a shaft fixedly connected to the same axis and is then fixedly connected to a drive rod. A toothed groove is provided on the side of the inner sleeve, and the toothed groove engages with the gear. An assembly hole for assembling the bearing is provided on the surface of the cover. The bearing can move away from the toothed groove within the assembly hole. A push spring is also provided within the assembly hole to push the bearing to move closer to the toothed groove.

[0015] As a further description of the above technical solution: the protective mechanism includes a swing frame, one end of which is rotatably mounted on the side of the mounting base, and the other end is fixedly connected to a top block. A brake line is also connected to the swing frame near the rotatable end. One end of the brake line is connected to a side support frame. A protrusion is fixedly connected to the side of the through rod. The protrusion swings synchronously with the mounting frame. When the protrusion swings, it pushes the top block, causing the swing frame to rotate around one end of the axis, which pulls the brake line and further pulls the side support frame downward.

[0016] As a further description of the above technical solution: The second protective mechanism includes a reel fixedly mounted on one end of the slide rail. A steel wire rope is wound on the reel. The length of the steel wire rope is less than the length of the slide rail. One end of the steel wire rope is connected to a connector. The connector is fixedly mounted on a slide block. The slide block is connected to a pin rod via a second steel wire rope. The total length of the first and second steel wire ropes is less than the length of the slide rail. The connector includes a shuttle column and a retainer. The shuttle column connects the second steel wire rope to the first steel wire rope. A through groove is opened on the arc surface of the shuttle column. A V-shaped spring is fixedly mounted inside the through groove. Both ends of the V-shaped spring extend to the outside of the shuttle column. The retainer is fixedly mounted on the upper surface of the slide block. The shuttle column is movably inserted into the surface of the retainer and is limited by the V-shaped spring to pull the first steel wire rope.

[0017] A method for measuring the thickness of a long-span steel wheel, the method comprising the following steps:

[0018] S1: Control the steel wheel to move slowly on the rail;

[0019] S2: With the slide in its initial position, the control frame switches from a horizontal to an upright state between two adjacent steel wheels and locks itself in place via a push rod. Subsequently, the frame adheres to the side of the rim of the approaching steel wheel, forcing the slide to move synchronously with the steel wheel.

[0020] S3: Activate the two extension rod mechanisms to send the two probes at an upward angle, avoiding the obstruction structure on the outside of the steel wheel, to one side of the tread surface to perform thickness detection on the dynamic steel wheel;

[0021] S4: After the test is completed, first control the extension rod mechanism to retract, then control the following mechanism to reset from the upright state to the flat state, and finally control the slide to reset to the initial position.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. By controlling the following mechanism, the slide and the steel wheel move synchronously. With the help of the extension rod mechanism, the probe is accurately delivered to one side of the tread at an upward angle, avoiding the obstruction structure on the outside of the steel wheel. The thickness of the steel wheel in motion is then measured. This process can simultaneously measure multiple tread surfaces of the steel wheel. After the measurement is completed, the positions and states of the extension rod mechanism, the mounting bracket, and the slide are reset in sequence. By repeating the above process, the steel wheel in motion can be fully measured in sequence. Compared with traditional measurement methods, this method not only significantly improves measurement efficiency and accuracy but also avoids the need for repeated start-stop cycles when the steel wheel is moving, effectively saving energy.

[0024] 2. The protective mechanism works in conjunction with the mounting frame to separate the gear and the tooth groove during the initial movement of the mounting frame's swing. With the help of the tension spring, the inner sleeve is pulled back. This design effectively avoids the situation where the inner sleeve is not retracted in time due to control failure, and is thus crushed by the steel wheel, providing a reliable guarantee for the stable operation of the equipment.

[0025] 3. By setting up a second protective mechanism, which works in conjunction with the accompanying mechanism, the sleeve and the rotating shaft form a rotational connection, ensuring that the mounting frame can fall smoothly and avoid being broken by the advancing steel wheel. At the same time, the sleeve has the conditions to trigger the first protective mechanism through the through rod. Even if the extension rod mechanism and the accompanying mechanism fail to control, the first and second protective mechanisms can work together to ensure that the extension rod mechanism and the accompanying mechanism are not damaged, providing double protection for the safe operation of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a front view structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the thickness gauge structure of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged diagram of A in the middle;

[0030] Figure 5 This is a front structural diagram of the extension rod mechanism and assembly mechanism of the present invention;

[0031] Figure 6 This is a schematic diagram of the rear structure of the extension rod mechanism and assembly mechanism of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged diagram of B in the diagram;

[0033] Figure 8 This is a schematic diagram of the internal structure of the extension mechanism of the present invention;

[0034] Figure 9 This is a schematic diagram of the control component structure of the present invention;

[0035] Figure 10 This is a schematic diagram of the gear and tooth groove separated in the present invention;

[0036] Figure 11 This is a schematic diagram of the two structures of the slide mechanism, the following mechanism, and the protective mechanism of the present invention;

[0037] Figure 12 For the present invention Figure 11 Enlarged diagram of C in the middle;

[0038] Figure 13 This is a schematic diagram of the following mechanism and slide structure of the present invention;

[0039] Figure 14 For the present invention Figure 13 Enlarged diagram of D in the middle;

[0040] Figure 15 This is a schematic diagram of the connecting component structure of the present invention;

[0041] Figure 16 This is a cross-sectional schematic diagram of the accompanying mechanism of the present invention;

[0042] Figure 17 This is a schematic diagram of the accompanying mechanism of the present invention when the mounting frame is erected;

[0043] Figure 18 This is a schematic diagram of the accompanying mechanism of the present invention in the state when the mounting frame is lying flat;

[0044] Figure 19 This is a schematic diagram of the protective mechanism of the present invention in the state when the mounting bracket is erected;

[0045] Figure 20 This is a schematic diagram of the protective mechanism of the present invention in the initial stage of the mounting bracket rotation.

[0046] In the diagram: 10. Slide mechanism; 11. Slide rail; 12. Slide block; 13. Return belt; 14. Return motor;

[0047] 20. Extension rod mechanism; 21. Outer sleeve; 211. Tension spring one; 22. Inner sleeve; 221. Gear groove; 23. Control component; 231. Cover; 232. Gear; 233. Bearing one; 234. Shaft; 235. Assembly hole; 236. Push spring;

[0048] 30. Following mechanism; 31. Mounting rack; 311. Roller; 32. Rotating shaft one; 321. Lock hole one; 322. Lock hole two; 323. Inclined groove; 324. Limiting block one; 33. Bearing two; 34. Push rod lock; 341. Mounting base; 342. Locking pin; 35. Sleeve; 351. Through rod; 352. Pin; 36. Torsion spring;

[0049] 40. Assembly mechanism; 41. Plate base; 42. Support rod; 43. Drive rod; 44. Side support frame; 45. Progress motor;

[0050] 50. Signal processor; 51. Probe; 52. Cable;

[0051] 60. Protective mechanism one; 61. Swing frame; 62. Top block; 63. Protrusion; 64. Brake line; 65. Limiting block two; 66. Tension spring two;

[0052] 70. Protective mechanism two; 71. Reel; 72. Wire rope one; 73. Connector; 731. Shuttle column; 732. Through groove; 733. V-shaped spring; 734. Locking seat; 74. Wire rope two;

[0053] 80. Steel wheel; 81. Wheel rim; 82. Tread;

[0054] 90. Railway tracks. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0057] like Figure 1 As shown, taking a railway train as an example, the train wheels are mounted on wheel seats via axles. During wheel tread wear inspection, the outer side of the wheel is usually obscured by structures such as side frames (not shown in the figure). This obstruction not only makes the operating space of the wheel extremely limited but also significantly increases the difficulty of the inspection. Furthermore, during the inspection process, the train needs to frequently start and stop at idle speed to inspect multiple wheel tread surfaces one by one. However, starting and stopping the train at idle speed not only consumes a lot of energy but also poses certain safety hazards when cooperating with personnel during the inspection.

[0058] To solve the above problems, combined with Figures 1-20A thickness gauge for a large-span steel wheel is provided, comprising: a slide mechanism 10 located on one side of a rail 90; the slide mechanism 10 having a sliding slide seat 12, on which a following mechanism 30 and an assembly mechanism 40 are mounted, and two extension rod mechanisms 20 are symmetrically mounted on the assembly mechanism 40 located on both sides of the following mechanism 30; and two probes 51, which are correspondingly mounted on the extended ends of the two extension rod mechanisms 20.

[0059] The accompanying mechanism 30 includes a mounting frame 31 and a push rod lock 34 for locking the working state of the mounting frame 31. When the mounting frame 31 is lying flat, the steel wheel 80 passes over it. When the mounting frame 31 is upright, it is in contact with one side of the wheel rim 81 of the steel wheel 80, forcing the slide block 12 to move synchronously with the steel wheel 80. Subsequently, the probe 51 extends to one side of the tread surface 82 of the steel wheel 80 at a preset angle through the extension rod mechanism 20, so that the two probes 51 are symmetrical with respect to the wheel center of the dynamic steel wheel 80, forming a measurement area for the thickness wear of the tread surface 82. After the current steel wheel 80 is inspected, the positions and states of the extension rod mechanism 20, the mounting frame 31, and the slide block 12 are reset in sequence so as to inspect the next steel wheel 80.

[0060] It also includes a first protective mechanism 60 and a second protective mechanism 70. The first protective mechanism 60 works with the mounting bracket 31 to control the extension mechanism 20 to quickly reset if the extension mechanism 20 has not reset in advance when the mounting bracket 31 is in the reset flat position. The second protective mechanism 70 works with the moving follow-up mechanism 30 to reset the mounting bracket 31 when it has passed the preset position but has not yet reset to the flat position.

[0061] Combination Figures 1-3 Specifically, first, control the steel wheel 80 to move slowly on the rail 90, with the slide 12 in its initial position. Then, control the mounting bracket 31 to switch from a horizontal to an upright position between two adjacent steel wheels 80. Subsequently, the mounting bracket 31 will attach to the side of the wheel flange 81 of the approaching steel wheel 80, forcing the slide 12 to move synchronously with the steel wheel 80. Next, activate the two extension rod mechanisms 20 to send the two probes 51 at an upward angle, avoiding the outer obstruction structure of the steel wheel 80, to the side of the tread surface 82 to perform thickness detection on the dynamic steel wheel 80. This process can simultaneously detect multiple tread surfaces 82 of the steel wheel 80. After the detection is completed, the extension rod mechanism 20 should be retracted to prevent the extended end of the extension rod mechanism 20 and the probe 51 from being on the moving path of the steel wheel 80. Then, control the following mechanism 30 to reset from the upright position to the horizontal position so as to detach from the movement of the current steel wheel 80. Finally, control the slide 12 to reset to the initial position so as to perform detection on the next steel wheel 80.

[0062] Furthermore, when the distance between two adjacent steel wheels 80 is small, after the previous steel wheel 80 is inspected, the next steel wheel 80 has already passed the initial position of the slide block 12, making it inconvenient to inspect the steel wheel 80 again. In this case, two sets of the above-mentioned device can be set up to inspect multiple steel wheels 80 separately in a staggered manner to overcome the above problem.

[0063] Combination Figures 16-18 The accompanying mechanism 30 also includes a rotating shaft 32 and a push rod lock 34. The rotating shaft 32 is rotatably mounted on the slide block 12 via a bearing 33. A sleeve 35 is fitted onto one end of the rotating shaft 32. A through rod 351 is provided on one side of the sleeve 35 and rotatably extends to the other end of the rotating shaft 32. A pin 352 is inserted between the sleeve 35 and the rotating shaft 32. The push rod lock 34 and the sleeve 35 are normally fixedly connected by the pin 352. When the pin 352 is removed, the sleeve 35 and the rotating shaft 32 are in a rotatable relationship. The mounting bracket 31 is fixedly mounted on the sleeve 35. Rotation of the first rotating shaft 32 causes the mounting bracket 31 to swing, allowing it to switch between upright and horizontal positions. A push rod lock 34 is fixed to the slide block 12 via a mounting base 341. The push rod lock 34 locks the rotation of the first rotating shaft 32, further securing the mounting bracket 31 to its upright or horizontal position. A torsion spring 36 is provided between the first rotating shaft 32 and the second bearing 33. A limit block 324 is fixedly installed on the arc surface of the first rotating shaft 32. Figure 16 , Figure 17 As shown, the elastic potential energy of the torsion spring 36 causes the rotating shaft 32 to rotate clockwise, and under the limiting action of the limiting block 324, the mounting bracket 31 is kept upright.

[0064] Specifically, in combination Figures 16-18 The rotating shaft 32 has a locking hole 321 and a locking hole 322 on its surface. The locking pin 342 of the push rod lock 34 engages with either the locking hole 321 or the locking hole 322 to lock the rotating shaft 32, thereby further locking the state of the mounting bracket 31. For example... Figure 17 As shown, when the locking pin 342 is inserted into the inner side of the first lock hole 321, the mounting bracket 31 is in an upright state so as to make force contact with the wheel flange 81. When the locking pin 342 is inserted into the inner side of the second lock hole 322, the mounting bracket 31 is in a flat state so that the steel wheel 80 passes over the top of the mounting bracket 31.

[0065] The workflow and principle of switching the mounting bracket 31 between the upright and flat states are as follows: When the locking pin 342 is retracted, the rotating shaft 32 is elastically driven by the torsion spring 36, causing the mounting bracket 31 to be in the upright state. At the same time, the locking pin 342 corresponds to the position of the locking hole 321. Then, the locking pin 342 is controlled to extend into the locking hole 321 to lock the rotating shaft 32. Subsequently, the approaching steel wheel 80 will come into contact with and push the mounting bracket 31, causing the slide 12 to move with the steel wheel 80. When it is necessary to switch the mounting bracket 31 to the flat state, the locking pin 342 is first controlled to retract, allowing the rotating shaft 32 to rotate. At this time, the moving steel wheel 80 will push one end of the mounting bracket 31, pushing the mounting bracket 31 to the flat state under the elastic force of the torsion spring 36. At this time, the locking pin 342 corresponds to the position of the locking hole 322. Then, the locking pin 342 is controlled to extend into the locking hole 322 to lock the rotating shaft 32.

[0066] During the process of the steel wheel 80 pushing the mounting frame 31 into a flat position, part of the surface of the flat mounting frame 31 will still be in contact with the steel wheel 80, which is not conducive to the smooth passage of the steel wheel 80 over the mounting frame 31. Figures 17-18 As shown, a sloping groove 323 is provided at the entrance of the second lock hole 322. When the lock pin 342 extends, it squeezes the sloping groove 323 and slides into the second lock hole 322, causing the first rotating shaft 32 to continue to rotate at a certain angle, so that the flat mounting frame 31 does not contact the lower surface of the steel wheel 80, allowing the steel wheel 80 to pass unobstructed above the mounting frame 31.

[0067] It should be noted that the sliding of the slide block 12 on the slide mechanism 10 has frictional resistance. This frictional force is sufficient to ensure that when the push rod lock 34 is released from locking the rotating shaft 32, the slide block 12 can remain in place so that the moving steel wheel 80 can overcome the elastic force of the torsion spring 36 to push one end of the mounting bracket 31.

[0068] The mounting frame 31 is equipped with multiple rollers 311. The mounting frame 31 contacts the wheel rim 81 through the rollers 311, reducing the friction between the mounting frame 31 and the wheel rim 81 when the steel wheel 80 rolls.

[0069] Combination Figure 1 , Figures 11-12 The slide mechanism 10 includes a slide rail 11, which is fixedly mounted below one side of the rail 90 and parallel to the rail 90. The slide block 12 slides on the slide rail 11. A reset belt 13 is mounted on the lower side of the slide rail 11 along the length direction. The upper side of the reset belt 13 is fixedly connected to the lower surface of the slide block 12. The reset belt 13 is supported by two pulleys A on the lower side of the slide rail 11. A reset motor 14 is provided on one side of one of the pulleys A. The reset motor 14 drives the pulley to rotate, pulling the slide block 12 to the initial position. In the standby state, the output shaft of the reset motor 14 can rotate freely so that when the slide block 12 is driven by the steel wheel 80, the reset belt 13 can move accordingly.

[0070] Combination Figures 5-6 The assembly mechanism 40 includes a plate base 41, which is fixedly mounted on one side of the slide block 12. A support rod 42 is fixedly installed on the upper side of the plate base 41. The support rod 42 supports the two extension rod mechanisms 20 at an angle, so that when the upper structure of the extension rod mechanism 20 extends, it can avoid the outer shielding structure of the steel wheel 80 and extend to the side of the tread surface 82. A side support frame 44 is also provided on one side of the support rod 42. The side support frame 44 is rotatably connected with the support rod 42 as a bearing. A drive rod 43 is also rotatably installed on one side of the side support frame 44. The drive rod 43 is driven by a stepping motor 45 fixedly mounted on the side support frame 44, so that the drive rod 43 further drives the two extension rod mechanisms 20 to work synchronously. The output end of the stepping motor 45 preferably drives the drive rod 43 to rotate through a pulley and belt transmission structure.

[0071] Combination Figure 6 , Figures 8-10 The extension mechanism 20 includes an outer sleeve 21 and an inner sleeve 22. The inner sleeve 22 is nested inside the outer sleeve 21. The upper end of the outer sleeve 21 is provided with a control component 23 for driving the inner sleeve 22 to extend. The outer sleeve 21 is provided with a tension spring 211 for pulling the inner sleeve 22 back. The probe 51 is fixed to the outer end of the inner sleeve 22. The outer sleeve 21 and the inner sleeve 22 are hollow. A signal processor 50 is fixedly installed on the side of the plate base 41. The signal processor 50 receives the detection signals from the two probes 51 through a cable 52 passing through the outer sleeve 21 and the inner sleeve 22.

[0072] The control component 23 includes a cover 231 fixedly mounted on the side of the outer sleeve 21. A gear 232 is rotatably mounted on the inner side of the cover 231 via a bearing 233. The gear 232 passes through the inner ring of the bearing 233 via a shaft 234 fixedly connected to the same axis and is fixedly connected to the drive rod 43 on the same axis. A toothed groove 221 is provided on the side of the inner sleeve 22, which is movably engaged with the gear 232. An assembly hole 235 for assembling the bearing 233 is provided on the surface of the cover 231. The bearing 233 can move away from the toothed groove 221 within the assembly hole 235. A push spring 236 is also provided within the assembly hole 235 to push the bearing 233 to move closer to the toothed groove 221.

[0073] Combination Figure 6 , Figures 8-10 As shown, specifically, the push spring 236 pushes the bearing 233, keeping the gear 232 and the tooth groove 221 engaged. When the advancing motor 45 drives the drive rod 43 to rotate, and the drive rod 43 drives the gear 232 to rotate through the bearing 233, it can cooperate with the tooth groove 221 to control the extension or retraction of the inner sleeve 22, so as to send the probe 51 to the preset position. When the advancing motor 45 is in standby mode, the drive shaft is in a locked state, which facilitates fixing the extension length of the inner sleeve 22; furthermore, as Figure 10As shown, when the control bearing 233 moves away from the tooth groove 221, the gear 232 will disengage from the tooth groove 221. At this time, the inner sleeve 22 will quickly retract into the inner side of the outer sleeve 21 under the pulling action of the tension spring 211.

[0074] like Figure 4 , Figure 7 , Figure 14 , Figures 19-20 The protective mechanism 60 includes a swing frame 61. One end of the swing frame 61 is rotatably mounted on the side of the mounting base 341, and the other end is fixedly connected to a top block 62. A brake line 64 is also connected to the swing frame 61 near the rotating end. One end of the brake line 64 is connected to the side support frame 44. A protrusion 63 is fixedly connected to the side of the through rod 351. The protrusion 63 swings synchronously with the mounting frame 31. When the protrusion 63 swings, it pushes the top block 62, causing the swing frame 61 to rotate around one end of the axis, which pulls the brake line 64 and further pulls the side support frame 44 downward.

[0075] Specifically, such as Figure 4 , Figure 7 , Figure 14 , Figures 19-20 As shown, the brake cable 64 is equivalent to an existing brake cable. One end of its spool is fixedly installed on one side of the swing frame 61, and the other end is fixedly installed on the middle of the upper surface of the slide block 12. One end of its core is fixedly connected to the surface of the swing frame 61, and the other end is fixedly connected to the side support frame 44. When the frame 31 swings, the protrusion 63 swings accordingly. The swinging protrusion 63 pushes the top block 62, causing the swing frame 61 to rotate around one end axis, pulling the core of the cable. Figure 19 , Figure 20 The pulled core further pulls the side support 44, forcing the drive rod 43 on the side support 44 to rotate downwards by a certain angle around the pivot of the support rod 42. The direction of movement of the drive rod 43 points to the location of the push spring 236. Furthermore, the movement of the drive rod 43 will cause the gear 232 to separate from the tooth groove 221, breaking the meshing relationship. After the protrusion 63 slides over the surface of the top block 62, the swing frame 61 will be pulled back by the tension spring 66 between the swing frame 61 and the brake line 64, and then limited by the limiting block 65 fixed on one side of the mounting base 341, so that the swing frame 61 returns to the initial position and no longer pulls the core. Furthermore, the coaxially assembled bearing 233 and drive rod 43 will also be reset under the pushing action of the push spring 236, so that the gear 232 and tooth groove 221 return to the meshing state.

[0076] Specifically, if the inner sleeve 22 has already retracted into the inner side of the outer sleeve 21 before the mounting bracket 31 swings, although the protrusion 63 pressing the top block 62 will cause the gear 232 to separate from the tooth groove 221, after the protrusion 63 slides over the surface of the top block 62, the positions of the swing bracket 61 and the drive rod 43 will be restored, and the gear 232 will still resume its meshing relationship with the tooth groove 221, without affecting the gear 232 driving the inner sleeve 22 to extend. If the inner sleeve 22 has not retracted into the inner side of the outer sleeve 21 before the mounting bracket 31 swings, the advancing steel wheel 80 is likely to crush the inner sleeve 22 and the probe 51. However, this solution, through the working principle of the aforementioned protective mechanism 60, causes the gear 232 to separate from the tooth groove 221 in the initial movement of the mounting bracket 31 swinging, so that the inner sleeve 22 is quickly pulled back by the tension spring 211, avoiding the inner sleeve 22 from being crushed by the steel wheel 80 due to control failure and untimely retraction.

[0077] It should be noted that when the drive rod 43 moves downward around the support rod 42, it follows an arc-shaped motion trajectory. Similarly, the motion trajectory of bearing 233 inside the mounting hole 235 is also arc-shaped. The shape of the mounting hole 235 satisfies the motion trajectory of bearing 233.

[0078] like Figures 11-16 The second protective mechanism 70 includes a reel 71 fixedly mounted on one end of the slide rail 11. The reel 71 is located on one side of the initial position of the slide block 12. A steel wire rope 72 is wound on the reel 71. The length of the steel wire rope 72 is less than the length of the slide rail 11. The steel wire rope 72 rotates elastically to rewind (similar to an existing measuring tape). One end of the steel wire rope 72 is connected to a connector 73, which is fixedly mounted on the slide block 12. The slide block 12 is connected to the pin 352 via a second steel wire rope 74. The total length of the first steel wire rope 72 and the second steel wire rope 74 is less than the length of the slide rail 11. Figure 14 As shown, the second steel wire rope 74 has sufficient length to allow the first rotating shaft 32 to rotate normally. The connecting piece 73 includes a shuttle column 731 and a retainer 734. The shuttle column 731 connects the second steel wire rope 74 to the first steel wire rope 72. The shuttle column 731 has a through groove 732 on its arc surface. A V-shaped spring piece 733 is fixedly installed inside the through groove 732. The two ends of the V-shaped spring piece 733 extend to the outside of the shuttle column 731. The retainer 734 is fixedly installed on the upper surface of the slide block 12. The shuttle column 731 is movably inserted into the surface of the retainer 734 and is limited by the V-shaped spring piece 733 to pull the first steel wire rope 72.

[0079] Specifically, the total length of wire rope 72 and wire rope 74 is the normal displacement range of the slide block 12, which is the preset range mentioned above. To prevent the mounting bracket 31 from failing to control and thus unable to switch from the upright state to the flat state, which could further cause the slide block 12 to slide to the end of the slide rail 11 and the mounting bracket 31 to break due to the moving steel wheel 80, this solution works as follows: during the movement of the slide block 12 relative to the steel wheel 80, when wire rope 72 is completely pulled out of the reel 71, wire rope 72 will pull the shuttle column 731 from the holder 7. Pulling up 34, the second steel wire rope 74 is then taut, pulling the pin 352 out of the sleeve 35, causing the sleeve 35 to be rotatably connected to the first rotating shaft 32, so that the frame 31 can fall smoothly and avoid being broken by the advancing steel wheel 80. The sleeve 35 still has the conditions to trigger the first protective mechanism 60 through the through rod 351. That is to say, even if the extension mechanism 20 and the following mechanism 30 both fail, the first protective mechanism 60 and the second protective mechanism 70 can still ensure that the extension mechanism 20 and the following mechanism 30 are not damaged.

[0080] A method for measuring the thickness of a long-span steel wheel, the method comprising the following steps:

[0081] S1: Control the steel wheel 80 to move slowly on the rail 90;

[0082] S2: With the slide 12 in its initial position, the control bracket 31 switches from a horizontal to an upright position between two adjacent steel wheels 80 and locks itself via the push rod lock 34. Subsequently, the bracket 31 adheres to the side of the rim 81 of the approaching steel wheel 80, forcing the slide 12 to move synchronously with the steel wheel 80.

[0083] S3: Activate the two extension rod mechanisms 20, and send the two probes 51 at an upward angle, avoiding the outer shielding structure of the steel wheel 80, to one side of the tread surface 82 to perform thickness detection on the dynamic steel wheel 80;

[0084] S4: After the test is completed, first control the extension rod mechanism 20 to retract, then control the following mechanism 30 to reset from the upright state to the flat state, and finally control the slide block 12 to reset to the initial position.

[0085] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A thickness gauge for large-span steel wheels, characterized in that, include: The slide mechanism (10) has a slide base (12), on which a following mechanism (30) and an assembly mechanism (40) are mounted. Two extension rod mechanisms (20) are symmetrically mounted on the assembly mechanism (40) on both sides of the following mechanism (30); two probes (51) are correspondingly mounted on the extended ends of the two extension rod mechanisms (20); The accompanying mechanism (30) includes a mounting frame (31) and a push rod lock (34). When the mounting frame (31) is lying flat, the steel wheel (80) passes over it. When the mounting frame (31) is standing up, it is in contact with one side of the wheel rim (81) of the steel wheel (80), forcing the slide (12) to move synchronously with the steel wheel (80). The probe (51) extends to one side of the tread surface (82) of the steel wheel (80) at a preset angle through the extension rod mechanism (20), so that the two probes (51) are symmetrical about the wheel center of the dynamic steel wheel (80), forming a measurement area for the wear of the tread surface (82) thickness. The accompanying mechanism (30) also includes a rotating shaft (32) and a push rod lock (34). The rotating shaft (32) is rotatably mounted on the slide (12) via a bearing (33). A sleeve (35) is fitted on one end of the rotating shaft (32). A through rod (351) is provided on one side of the sleeve (35) and rotates through to the other end of the rotating shaft (32). A pin (352) is inserted between the sleeve (35) and the rotating shaft (32). The mounting bracket (31) is fixedly mounted on the sleeve (35). The push rod lock (34) is fixed on the slide (12) via a mounting base (341). The push rod lock (34) locks the rotation state of the rotating shaft (32). A torsion spring (36) is provided between the rotating shaft (32) and the bearing (33). A limit block (324) is fixedly provided on the arc surface of the rotating shaft (32). The assembly mechanism (40) includes a plate base (41), which is fixedly assembled on one side of the slide (12). A support rod (42) is fixedly provided on the upper side of the plate base (41). The support rod (42) tilts and fixes the two extension rod mechanisms (20) for support. A side support frame (44) is also provided on one side of the support rod (42). It also includes a first protective mechanism (60) and a second protective mechanism (70). The first protective mechanism (60) includes a swing frame (61). One end of the swing frame (61) is rotatably mounted on the side of the mounting base (341), and the other end is fixedly connected to a top block (62). The swing frame (61) is also connected to a brake line (64) near the rotating end. One end of the brake line (64) is connected to a side support frame (44). A protrusion (63) is fixedly connected to the side of the through rod (351). The protrusion (63) swings synchronously with the mounting frame (31). When the protrusion (63) swings, it pushes the top block (62), causing the swing frame (61) to rotate around one end of the axis, which pulls the brake line (64) and further pulls the side support frame (44) down. The second protective mechanism (70) includes a reel (71) fixedly mounted on one end of the slide rail (11). A steel wire rope (72) is wound around the reel (71). The length of the steel wire rope (72) is less than the length of the slide rail (11). One end of the steel wire rope (72) is connected to a connector (73). The connector (73) is fixedly mounted on a slide block (12). The slide block (12) is connected to a pin (352) via a second steel wire rope (74). The total length of the first steel wire rope (72) and the second steel wire rope (74) is less than the length of the slide rail (11). The connector (73) includes... The shuttle column (731) and the holder (734) are provided. The shuttle column (731) connects the second wire rope (74) and the first wire rope (72). The arc surface of the shuttle column (731) is provided with a through groove (732). A V-shaped spring piece (733) is fixedly installed inside the through groove (732). The two ends of the V-shaped spring piece (733) extend to the outside of the shuttle column (731). The holder (734) is fixedly installed on the upper surface of the slide (12). The shuttle column (731) is movably inserted into the surface of the holder (734) and is limited by the V-shaped spring piece (733) to pull the first wire rope (72). The first protective mechanism (60) works with the mounting bracket (31) to force the extension rod mechanism (20) that has failed to control the reset to reset; the second protective mechanism (70) works with the moving follower mechanism (30) to force the mounting bracket (31) that has failed to control the reset to reset.

2. The thickness gauge for a large-span steel wheel according to claim 1, characterized in that: The mounting bracket (31) is equipped with multiple rollers (311).

3. The thickness gauge for a large-span steel wheel according to claim 2, characterized in that: The slide mechanism (10) includes a slide rail (11), which is fixedly mounted below one side of the rail (90) and parallel to the rail (90). The slide block (12) slides on the slide rail (11). A reset belt (13) is mounted on the lower side of the slide rail (11) along the length direction. The upper side of the reset belt (13) is fixedly connected to the lower surface of the slide block (12). The reset belt (13) is supported by two pulleys A on the lower side of the slide rail (11). A reset motor (14) is provided on one side of one of the pulleys A.

4. The thickness gauge for a large-span steel wheel according to claim 3, characterized in that: The side support frame (44) is rotatably connected with the support rod (42) as the bearing. A drive rod (43) is also rotatably installed on one side of the side support frame (44). The drive rod (43) is driven by the stepping motor (45) fixedly mounted on the side support frame (44), so that the drive rod (43) further drives the two extension rod mechanisms (20) to work synchronously.

5. The thickness gauge for a large-span steel wheel according to claim 4, characterized in that: The extension rod mechanism (20) includes an outer sleeve (21) and an inner sleeve (22). The inner sleeve (22) is nested inside the outer sleeve (21). The upper end of the outer sleeve (21) is provided with a control component (23) for driving the inner sleeve (22) to extend. The outer sleeve (21) is provided with a tension spring (211) for pulling the inner sleeve (22) back. The probe (51) is fixed at the outer end of the inner sleeve (22).

6. The thickness gauge for a large-span steel wheel according to claim 5, characterized in that: The control component (23) includes a cover (231) fixedly mounted on the side of the outer sleeve (21). A gear (232) is rotatably mounted on the inner side of the cover (231) via a bearing (233). The gear (232) passes through the inner ring of the bearing (233) via a shaft (234) fixedly connected to the same axis and is fixedly connected to the drive rod (43) on the same axis. A toothed groove (221) is provided on the side of the inner sleeve (22). The toothed groove (221) is movably meshed with the gear (232). An assembly hole (235) for assembling the bearing (233) is provided on the surface of the cover (231). The bearing (233) can move away from the toothed groove (221) in the assembly hole (235). A push spring (236) is also provided in the assembly hole (235) to push the bearing (233) to move closer to the toothed groove (221).

7. A method for measuring the thickness of a large-span steel wheel, wherein the thickness gauge for a large-span steel wheel according to claim 6 is characterized in that, The measurement method includes the following steps: S1: Control the steel wheel (80) to move slowly on the rail (90); S2: The slide (12) is in the initial position. The control frame (31) switches from a flat state to an upright state between two adjacent steel wheels (80) and locks itself in place by the push rod lock (34). Then, the frame (31) adheres to the side of the rim (81) of the approaching steel wheel (80), forcing the slide (12) to move synchronously with the steel wheel (80): S3: Activate the two extension rod mechanisms (20) and send the two probes (51) at an upward angle, avoiding the outer shielding structure of the steel wheel (80), to the side of the tread (82) to perform thickness detection on the dynamic steel wheel (80); S4: After the test is completed, first control the extension rod mechanism (20) to retract, then control the following mechanism (30) to reset from the upright state to the flat state, and finally control the slide (12) to reset to the initial position.

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