Thickness measuring method and thickness gauge for large-span steel wheel

Abstract

The invention relates to the technical field of wheel measurement, discloses a large-span steel wheel thickness measurement method and a thickness gauge, and solves the problem that the thickness of a large-span steel wheel cannot be measured when a plurality of steel wheels assembled on a moving mechanism are subjected to tread wear detection. The problems that a traditional detection mode is low in efficiency, large in error due to dependence on manual experience and difficult to accurately measure due to space limitation exist, a sliding seat and a steel wheel are kept to move synchronously by controlling an accompanying mechanism, and a measuring head keeps away from a shielding structure on the outer side of the steel wheel at an inclined upward angle by means of a stretching rod mechanism and is accurately conveyed to one side of a tread; thickness detection is carried out on the steel wheel in a dynamic state, a plurality of treads of the steel wheel can be detected at the same time in the process, after detection is completed, the positions and states of the stretching rod mechanism, the pasting frame and the sliding base are reset in sequence, and comprehensive detection can be carried out on the advancing steel wheel in sequence by repeating the process.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel measurement, and specifically to a method and a thickness gauge for measuring the thickness of a large-span steel wheel. Background Art

[0002] Large-span steel wheels are special moving mechanisms commonly used for carrying large loads, such as railway transport vehicles, mine transport vehicles, heavy-duty tractors, gantry cranes, etc.

[0003] For the inspection of steel wheels, the main focus is on the worn thickness of the tread of the steel wheel. According to the specification requirements, the wear of the tread of the wheel shall not exceed 15% of the original thickness. The detection principle of the tread is: measure the distance between the two treads passing through the center of the wheel, and then compare it with the original tread distance of the wheel to determine the worn thickness of the tread.

[0004] There are multiple steel wheels assembled on the moving mechanism. When implementing tread wear detection on these steel wheels, the traditional detection method requires manual measurement of each wheel one by one, which will consume a large amount of time and manpower. For example, for railway transport vehicles, dozens or even hundreds of wheels need to be detected, and the detection efficiency is difficult to meet the actual requirements. Moreover, manual detection depends on the accuracy of the detection tool and the experience of the operator, and it is easy to cause detection errors due to human factors. In addition, steel wheels are usually installed on complex mechanical structures and are restricted by space during detection. For example, on a gantry crane, the wheels are located at a high position and the surrounding space is narrow, which increases the difficulty of detection and makes it difficult to perform precise measurement. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and a thickness gauge for measuring the thickness of a large-span steel wheel, which solve the problems of low efficiency of the traditional detection method, large errors caused by relying on manual experience, and difficulty in precise measurement due to space limitations when implementing tread wear detection on multiple steel wheels assembled on a moving mechanism.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A thickness gauge for a large-span steel wheel, comprising: a sliding table mechanism, the sliding table mechanism has a sliding seat, and a following mechanism and an assembly mechanism are assembled on the sliding seat, and two extension rod mechanisms are symmetrically assembled on both sides of the following mechanism; two measuring heads, and the two measuring heads are correspondingly assembled at the extended ends of the two extension rod mechanisms.

[0007] The following mechanism includes a sticker frame and a push rod lock. When the sticker frame lies flat, the steel wheel passes through from above; when the sticker frame stands up, it fits with one side of the rim of the steel wheel, forcing the sliding seat to move synchronously with the steel wheel. The measuring heads extend towards one side of the tread of the steel wheel at a preset angle through the extension rod mechanisms, so that the two measuring heads are symmetric with respect to the center of the dynamic steel wheel, forming a measurement area for the tread thickness wear.

[0008] It also includes a first protection mechanism and a second protection mechanism. The first protection mechanism cooperates with the sticker holder to force the extension rod mechanism with ineffective control reset to reset; the second protection mechanism cooperates with the moving follower mechanism to force the sticker holder with ineffective control to reset.

[0009] As a further description of the above technical solution: The follower mechanism further includes a first rotating shaft and a push rod lock. The first rotating shaft is rotationally assembled on the sliding seat through a second bearing. A socket is sleeved on one end of the first rotating shaft. A through rod on one side of the socket rotates through to the other end of the first rotating shaft. A pin rod is inserted between the socket and the first rotating shaft. The sticker holder is fixedly assembled on the socket. The push rod lock is fixed on the sliding seat through a mounting seat. The push rod lock locks the rotating state of the first rotating shaft. A torsion spring is arranged between the first rotating shaft and the second bearing. A first limiting block is fixedly arranged on the arc surface of the first rotating shaft.

[0010] As a further description of the above technical solution: A plurality of rollers are assembled on the sticker holder.

[0011] As a further description of the above technical solution: The sliding table mechanism includes a slide rail. The slide rail is fixedly assembled below one side of the railway track and is parallel to the railway track. The sliding seat slides on the slide rail. A reset belt is assembled along the length direction on the lower side of the slide rail. The upper side of the reset belt is fixedly connected to the lower surface of the sliding seat. The reset belt is supported by two pulley A on the lower side of the slide rail. A reset motor is arranged on one side of one of the pulley A.

[0012] As a further description of the above technical solution: The assembly mechanism includes a plate seat. The plate seat is fixedly assembled on one side of the sliding seat. A support rod is fixedly arranged on the upper side of the plate seat. The support rod obliquely and fixedly supports the two extension rod mechanisms. A side support frame is further arranged on one side of the support rod. The side support frame is rotatably connected with the support rod as a bearing. A driving rod is further rotatably installed on one side of the side support frame. The driving rod is driven by a progressive motor fixedly assembled on the side support frame to further drive the two extension rod mechanisms to operate 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. A control component for driving the inner sleeve to extend is arranged at the upper end of the outer sleeve. A first tension spring for pulling the inner sleeve back is arranged inside the outer sleeve. The measuring head 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 body fixedly assembled on the side of the outer sleeve, and a gear is rotatably assembled on the inside of the cover body through a bearing. The gear is coaxially fixedly connected to the drive rod after passing through the inner ring of the bearing through a coaxially fixed shaft. A tooth groove is provided on the side of the inner sleeve, and the tooth groove is movably engaged with the gear. An assembly hole for assembling bearing one is provided on the surface of the cover body, and the bearing one can move away from the tooth groove in the assembly hole. A push spring is also provided in the assembly hole to push the bearing one to move closer to the tooth groove.

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

[0016] As a further description of the above technical solution: the protective mechanism 2 includes a reel fixedly assembled at one end of the slide rail, the reel is wound with a steel wire rope 1, the length of the steel wire rope 1 is less than the length of the slide rail, one end of the steel wire rope 1 is connected to a connecting piece, the connecting piece is fixedly assembled on the slide seat, the slide seat is connected to the pin rod through the steel wire rope 2, the total length of the steel wire rope 1 and the steel wire rope 2 is less than the length of the slide rail, the connecting piece includes a shuttle column and a clamping seat, the shuttle column connects the steel wire rope 2 with the steel wire rope 1, the shuttle column arc surface is provided with a through groove, the through groove is fixedly assembled with a V-shaped spring clip on the inner side, the two ends of the V-shaped spring clip extend to the outside of the shuttle column, the clamping seat is fixedly assembled on the upper surface of the slide seat, the shuttle column is movably inserted in the surface of the clamping seat, and is limited by the V-shaped spring clip to pull the steel wire rope 1.

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

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

[0019] S2: The slide is in the initial position. The control frame switches from a horizontal state to an upright state between two adjacent steel wheels and is locked by a push rod lock. Subsequently, the frame is attached to the side of the rim of the approaching steel wheel, forcing the slide to move synchronously with the steel wheel:

[0020] S3: Start the two extension rod mechanisms and move the two probes at an oblique upward angle to avoid the shielding structure on the outer side of the steel wheel and reach the tread side to perform thickness detection on the dynamic steel wheel;

[0021] S4: After the detection is completed, the extension rod mechanism is first controlled to retract, and then the accompanying mechanism is controlled to return from the upright state to the horizontal state, and finally the slide is controlled to return to the initial position.

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

[0023] 1. By controlling the follower mechanism, the sliding seat is made to move synchronously with the steel wheel. With the help of the extension rod mechanism, the measuring head is sent to the side of the tread at an obliquely upward angle to avoid the shielding structure outside the steel wheel, and accurately sent to one side of the tread to detect the thickness of the steel wheel in motion. Multiple treads of the steel wheel can be detected simultaneously during this process. After the detection is completed, the positions and states of the extension rod mechanism, the attachment frame, and the sliding seat are reset in sequence. By repeating the above process, the advancing steel wheel can be comprehensively detected. Compared with the traditional detection method, this method not only significantly improves the detection efficiency and accuracy but also avoids the necessity of repeated starts and stops when the steel wheel moves, effectively saving energy consumption.

[0024] 2. The first protection mechanism and the attachment frame cooperate with each other. In the initial movement of the attachment frame swinging, the separation of the gear and the tooth groove can be achieved, and with the pulling force of the first tension spring, the inner sleeve is pulled back. This design effectively avoids the situation where the inner sleeve fails to retract in time due to control failure and is then crushed by the steel wheel, providing a reliable guarantee for the stable operation of the equipment.

[0025] 3. By setting the second protection mechanism and cooperating with the follower mechanism, the sleeve seat and the first rotating shaft form a rotational connection relationship, ensuring that the attachment frame can fall smoothly and avoiding being broken by the advancing steel wheel. At the same time, the sleeve seat has the condition to trigger the first protection mechanism through the through rod. Even when the control of both the extension rod mechanism and the follower mechanism fails, the first protection mechanism and the second protection mechanism can cooperate to ensure that the extension rod mechanism and the follower mechanism are not damaged, providing double protection for the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of the present invention;

[0027] Figure 2 is the front structural schematic diagram of the present invention;

[0028] Figure 3 is the structural schematic diagram of the thickness gauge of the present invention;

[0029] Figure 4 is the present invention Figure 3 magnified schematic diagram of A in;

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

[0031] Figure 6 is the back structural schematic diagram of the extension rod mechanism and the assembly mechanism of the present invention;

[0032] Figure 7 is the present inventionFigure 6 Schematic enlarged view of B in the present invention;

[0033] Figure 8 Schematic internal structure view of the telescopic rod mechanism of the present invention;

[0034] Figure 9 Schematic control component structure view of the present invention;

[0035] Figure 10 Schematic separation state view of the gear and tooth groove of the present invention;

[0036] Figure 11 Schematic structure view of the sliding table mechanism, follower mechanism, and protection mechanism II of the present invention;

[0037] Figure 12 Of the present invention Figure 11 Schematic enlarged view of C in the present invention;

[0038] Figure 13 Schematic structure view of the follower mechanism and sliding seat of the present invention;

[0039] Figure 14 Of the present invention Figure 13 Schematic enlarged view of D in the present invention;

[0040] Figure 15 Schematic connecting piece structure view of the present invention;

[0041] Figure 16 Schematic cross-sectional view of the follower mechanism of the present invention;

[0042] Figure 17 Schematic state view of the follower mechanism of the present invention when the sticker frame is erected;

[0043] Figure 18 Schematic state view of the follower mechanism of the present invention when the sticker frame is lying flat;

[0044] Figure 19 Schematic state view of the protection mechanism I of the present invention when the sticker frame is erected;

[0045] Figure 20 Schematic state view of the protection mechanism I of the present invention at the initial stage of the rotation of the sticker frame.

[0046] In the figure: 10, sliding table mechanism; 11, slide rail; 12, sliding seat; 13, return belt; 14, return motor;

[0047] 20, telescopic rod mechanism; 21, outer sleeve; 211, first tension spring; 22, inner sleeve; 221, tooth groove; 23, control component; 231, cover body; 232, gear; 233, first bearing; 234, shaft rod; 235, assembly hole; 236, push spring;

[0048] 30. Follow-up mechanism; 31. Attachment rack; 311. Roller; 32. First rotating shaft; 321. First lock hole; 322. Second lock hole; 323. Inclined groove; 324. First limit block; 33. Second bearing; 34. Push rod lock; 341. Mounting seat; 342. Lock post; 35. Sleeve seat; 351. Through rod; 352. Pin rod; 36. Torsion spring;

[0049] 40. Assembly mechanism; 41. Plate seat; 42. Support rod; 43. Driving rod; 44. Side support frame; 45. Progressive motor;

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

[0051] 60. First protection mechanism; 61. Swing rack; 62. Top block; 63. Convex block; 64. Brake wire; 65. Second limit block; 66. Second tension spring;

[0052] 70. Second protection mechanism; 71. Reel; 72. First steel wire rope; 73. Connector; 731. Shuttle post; 732. Through groove; 733. V-shaped elastic piece; 734. Clamping seat; 74. Second steel wire rope;

[0053] 80. Steel wheel; 81. Rim; 82. Tread;

[0054] 90. Rail. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0057] As Figure 1 shown, taking a railway train as an example, the wheels of the railway train are installed on the wheel seats through axles. In the detection of the wear of the wheel tread, the outer side of the wheel is usually blocked by structures such as side frames and is not shown in the figure. This kind of blockage not only makes the operable space of the wheel extremely narrow, but also significantly increases the difficulty of detection. In addition, during the detection process, the train needs to frequently start and stop at idle speed in order to detect the multiple treads of the wheels one by one. However, the start and stop of the train at idle speed not only consume high energy, but also pose certain safety hazards when cooperating with the staff for detection.

[0058] To solve the above problems, in combination with Figures 1 - 20, provided is a large-span steel wheel thickness gauge, including: a sliding table mechanism 10 located on one side of a rail 90; the sliding table mechanism 10 has a sliding seat 12, and a following mechanism 30 and an assembling mechanism 40 are assembled on the sliding seat 12. Two telescopic rod mechanisms 20 are symmetrically assembled on both sides of the following mechanism 30; two measuring heads 51 are correspondingly assembled at the extended ends of the two telescopic rod mechanisms 20;

[0059] The following mechanism 30 includes a attaching frame 31 and a push rod lock 34 for locking the working state of the attaching frame 31. When the attaching frame 31 lies flat, the steel wheel 80 passes through from above; when the attaching frame 31 stands up, it fits against one side of the wheel rim 81 of the steel wheel 80, forcing the sliding seat 12 to move synchronously with the steel wheel 80. Subsequently, the measuring heads 51 extend towards one side of the tread 82 of the steel wheel 80 at a preset angle through the telescopic rod mechanisms 20, so that the two measuring heads 51 are symmetric with respect to the center of the dynamic steel wheel 80, forming a measurement area for the thickness wear of the tread 82; after the detection of the current steel wheel 80 is completed, the positions and states of the telescopic rod mechanisms 20, the attaching frame 31, and the sliding seat 12 are reset in sequence; so as to detect the next steel wheel 80.

[0060] It further includes a first protection mechanism 60 and a second protection mechanism 70. The first protection mechanism 60 cooperates with the attaching frame 31. When the attaching frame 31 is reset to the lying flat state, if the telescopic rod mechanisms 20 are not reset in advance, the telescopic rod mechanisms 20 are controlled to quickly reset; the second protection mechanism 70 cooperates with the moving following mechanism 30 to reset it when the attaching frame 31 passes through a preset position and has not been reset to the lying flat state.

[0061] Combined with Figures 1 - 3 , specifically, first control the steel wheel 80 to move slowly on the rail 90. The sliding seat 12 is at the initial position. Control the attaching frame 31 to switch from the lying flat state to the standing up state between two adjacent steel wheels 80. Subsequently, the attaching frame 31 will fit against the side of the wheel rim 81 of the approaching steel wheel 80, forcing the sliding seat 12 to move synchronously with the steel wheel 80. Immediately afterwards, start the two telescopic rod mechanisms 20, and send the two measuring heads 51 to one side of the tread 82 at an obliquely upward angle, avoiding the outer shielding structure of the steel wheel 80, to perform thickness detection on the dynamic steel wheel 80. Multiple treads 82 of the steel wheel 80 can be detected simultaneously during this process. After the detection is completed, the telescopic rod mechanisms 20 should be controlled to retract first to avoid the extended ends of the telescopic rod mechanisms 20 and the measuring heads 51 being on the moving path of the steel wheel 80. Then, control the following mechanism 30 to reset from the standing up state to the lying flat state to get out of the movement of the current steel wheel 80. Finally, control the sliding seat 12 to reset to the initial position to detect the next steel wheel 80;

[0062] Furthermore, when the distance between two adjacent steel wheels 80 is small, after the detection of the previous steel wheel 80 is completed, the next steel wheel 80 has already passed through the initial position of the sliding seat 12, making it inconvenient to detect this steel wheel 80. In view of this situation, two sets of the above-mentioned devices can be set up to detect multiple steel wheels 80 in a staggered manner to overcome the above problems.

[0063] Combined with Figures 16 - 18 , the follower mechanism 30 further includes a first rotating shaft 32 and a push rod lock 34. The first rotating shaft 32 is rotatably assembled on the sliding seat 12 through a second bearing 33. A socket 35 is sleeved on one end of the first rotating shaft 32. A through rod 351 penetrates through the other end of the first rotating shaft 32 in a rotating manner on one side of the socket 35. A pin rod 352 is inserted between the socket 35 and the first rotating shaft 32. The push rod lock 34 and the socket 35 are normally fixedly connected through the pin rod 352. When the pin rod 352 is removed, the socket 35 and the first rotating shaft 32 are in a rotating relationship. The attaching frame 31 is fixedly assembled on the socket 35. By the rotation of the first rotating shaft 32, the attaching frame 31 is driven to swing so that the attaching frame 31 can be switched between two states of standing up and lying flat. The push rod lock 34 is fixed on the sliding seat 12 through a mounting seat 341. The push rod lock 34 locks the rotating state of the first rotating shaft 32 so as to further lock the state of the attaching frame 31 standing up or lying flat. A torsion spring 36 is arranged between the first rotating shaft 32 and the second bearing 33. A first limiting block 324 is fixedly arranged on the arc surface of the first rotating shaft 32. As Figure 16 , Figure 17 shown, the elastic potential energy of the torsion spring 36 urges the first rotating shaft 32 to rotate clockwise, and under the limiting action of the first limiting block 324, the attaching frame 31 is kept in a standing-up state.

[0064] Specifically, combined with Figures 16 - 18 , a first locking hole 321 and a second locking hole 322 are formed on the surface of the first rotating shaft 32. The locking column 342 of the push rod lock 34 cooperates with the first locking hole 321 or the second locking hole 322 to lock the first rotating shaft 32 so as to further lock the state of the attaching frame 31. Among them, as Figure 17 shown, when the locking column 342 is inserted into the inner side of the first locking hole 321, the attaching frame 31 is in a standing-up state so as to be in force contact with the wheel rim 81. When the locking column 342 is inserted into the inner side of the second locking hole 322, the attaching frame 31 is in a lying-flat state so that the steel wheel 80 can pass over the attaching frame 31 from the upper side;

[0065] Regarding the working process and principle of the attaching frame 31 switching between the standing-up and lying-flat states: in the state where the locking column 342 retracts, the first rotating shaft 32 is elastically driven by the torsion spring 36 to make the attaching frame 31 in a standing-up state. At the same time, the locking column 342 corresponds to the position of the first locking hole 321. Subsequently, the locking column 342 is controlled to extend into the first locking hole 321 to lock the first rotating shaft 32. Subsequently, the approaching steel wheel 80 will be attached to and push the attaching frame 31, causing the sliding seat 12 to move along with the steel wheel 80; when it is necessary to switch the attaching frame 31 to the lying-flat state, first control the locking column 342 to retract so that the first rotating shaft 32 can rotate. At this time, the moving steel wheel 80 will push one end of the attaching frame 31. Under the action of overcoming the elastic force of the torsion spring 36, the attaching frame 31 is pushed to the lying-flat state. At this time, the locking column 342 corresponds to the position of the second locking hole 322. Subsequently, the locking column 342 is controlled to extend into the second locking hole 322 to lock the first rotating shaft 32;

[0066] During the process of the steel wheel 80 pushing the pasting frame 31 into a lying state, there is still a part of the surface of the lying pasting frame 31 that will contact the steel wheel 80, which is not conducive to the smooth passage of the steel wheel 80 above the pasting frame 31. As Figures 17 - 18 shown, a chute 323 is provided at the entrance of the second lock hole 322. When the lock post 342 extends, it squeezes the chute 323 and then slides into the second lock hole 322, prompting the first rotating shaft 32 to continue rotating a certain angle, so that the lying pasting frame 31 does not contact the lower surface of the steel wheel 80, enabling the steel wheel 80 to pass unobstructed above the pasting frame 31.

[0067] It should be noted that: the sliding of the sliding seat 12 on the sliding table mechanism 10 has frictional resistance, and this frictional force satisfies that when the push rod lock 34 disconnects the lock on the first rotating shaft 32, the sliding seat 12 can stay in place, so that the moving steel wheel 80 can push one end of the pasting frame 31 against the elastic force of the torsion spring 36.

[0068] A plurality of rollers 311 are assembled on the pasting frame 31. The pasting frame 31 contacts the wheel rim 81 through the rollers 311, reducing the frictional force between the pasting frame 31 and the wheel rim 81 when the steel wheel 80 rolls.

[0069] Combined with Figure 1 、 Figures 11 - 12 , the sliding table mechanism 10 includes a slide rail 11. The slide rail 11 is fixedly assembled below one side of the railway track 90 and is parallel to the railway track 90. The sliding seat 12 slides on the slide rail 11. A return belt 13 is assembled along the length direction on the lower side of the slide rail 11. The upper side of the return belt 13 is fixedly connected to the lower surface of the sliding seat 12. The return belt 13 is supported by two pulley A on the lower side of the slide rail 11. A return motor 14 is provided on one side of one of the pulley A. By driving the rotation of this pulley by the return motor 14, the sliding seat 12 is pulled to the initial position. When the return motor 14 is in the standby state, its output shaft can rotate freely, so that when the sliding seat 12 is driven by the steel wheel 80, the return belt 13 can move accordingly.

[0070] Combined with Figures 5 - 6 , the assembly mechanism 40 includes a plate seat 41. The plate seat 41 is fixedly assembled on one side of the sliding seat 12. A support rod 42 is fixedly provided on the upper side of the plate seat 41. The support rod 42 obliquely and fixedly supports the two telescopic rod mechanisms 20, facilitating the upper structure of the telescopic rod mechanism 20 to avoid the outer shielding structure of the steel wheel 80 when extending and reaching the side of the tread 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 driving rod 43 is also rotatably installed on one side of the side support frame 44. The driving rod 43 is driven by a progressive motor 45 fixedly assembled on the side support frame 44, so that the driving rod 43 further drives the two telescopic rod mechanisms 20 to operate synchronously. The output end of the progressive motor 45 preferably drives the rotation of the driving rod 43 through a pulley and belt transmission structure.

[0071] Combined with Figure 6 、 Figures 8 - 10, The telescopic rod mechanism 20 includes an outer sleeve 21 and an inner sleeve 22. The inner sleeve 22 is nested inside the outer sleeve 21. A control assembly 23 for driving the inner sleeve 22 to extend is provided at the upper end of the outer sleeve 21. A first tension spring 211 for pulling the inner sleeve 22 to retract is provided inside the outer sleeve 21. 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 seat 41. The signal processor 50 receives the detection signals of the two probes 51 through a cable 52, and the cable 52 passes through the outer sleeve 21 and the inner sleeve 22.

[0072] The control assembly 23 includes a housing 231 fixedly assembled on the side of the outer sleeve 21. A gear 232 is rotatably assembled inside the housing 231 through a first bearing 233. After the gear 232 passes through the inner ring of the first bearing 233 through a coaxial fixed connection shaft rod 234, it is coaxially and fixedly connected to the drive rod 43. A tooth groove 221 is formed on the side of the inner sleeve 22, and the tooth groove 221 is movably engaged with the gear 232. An assembly hole 235 for assembling the first bearing 233 is formed on the surface of the housing 231. The first bearing 233 can move away from the tooth groove 221 direction in the assembly hole 235. A push spring 236 for pushing the first bearing 233 to move close to the tooth groove 221 is also provided in the assembly hole 235.

[0073] Combined Figure 6 、 Figures 8 - 10 As shown, specifically, the push spring 236 pushes the first bearing 233, so that the gear 232 and the tooth groove 221 maintain an engagement relationship. When the stepping motor 45 drives the drive rod 43 to rotate, and the drive rod 43 drives the gear 232 to rotate through the first 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 a preset position. When the stepping motor 45 is on standby, the drive shaft is in a locked state, which is convenient for fixing the extended length of the inner sleeve 22; further, as Figure 10 shown, when controlling the first bearing 233 to move away from the tooth groove 221 direction, the gear 232 will disconnect the engagement relationship with the tooth groove 221. At this time, the inner sleeve 22 will be quickly retracted inside the outer sleeve 21 under the pulling action of the first tension spring 211.

[0074] As Figure 4 、 Figure 7 、 Figure 14 、 Figures 19 - 20 , The first protection mechanism 60 includes a swing frame 61. One end of the swing frame 61 is rotatably installed on the side of the mounting seat 341, and the other end is fixedly connected with a top block 62. A brake wire 64 is also connected near the rotating end of the swing frame 61. One end of the brake wire 64 is connected to the side support frame 44. A convex block 63 is fixedly connected to the side of the through rod 351. The convex block 63 swings synchronously with the attachment frame 31. When the convex block 63 swings, it pushes the top block 62, causing the swing frame 61 to rotate around one end axis, generating a pull on the brake wire 64, and further pulling the side support frame 44 to move downward.

[0075] Specifically, as shown in Figure 4 , Figure 7 , Figure 14 , Figures 19 - 20 , the brake cable 64 is equivalent to the existing brake cable. One end of its bobbin is fixedly installed on one side of the swing frame 61, and the other end is fixedly installed in the middle of the upper surface of the slide seat 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 attachment frame 31 swings, the convex block 63 swings accordingly. The swinging convex block 63 pushes the top block 62, causing the swing frame 61 to rotate around one end shaft, pulling the core, as shown in Figure 19 , Figure 20 . The pulled core further pulls the side support frame 44, forcing the drive rod 43 on the side support frame 44 to rotate downward by a certain angle around the pivot of the support rod 42. The moving direction of the drive rod 43 points to the position where the push spring 236 is located. Further, the movement of the drive rod 43 will drive the gear 232 to separate from the tooth groove 221 and disconnect the meshing relationship. After the convex block 63 slides over the surface of the top block 62, the swing frame 61 will be pulled back by the second tension spring 66 between the swing frame 61 and the brake cable 64, and then limited by the second limit block 65 fixedly arranged on one side of the mounting seat 341, so that the swing frame 61 is reset to the initial position and no longer pulls the core. Further, the coaxially assembled first bearing 233 and the drive rod 43 will also be reset under the pushing action of the push spring 236, so that the gear 232 and the tooth groove 221 are restored to the meshing state.

[0076] Specifically, before the attachment frame 31 swings, if the inner sleeve 22 has retracted to the inside of the outer sleeve 21, although the convex block 63 pressing the top block 62 will cause the gear 232 to separate from the tooth groove 221, after the convex block 63 slides over the surface of the top block 62, the positions of the swing frame 61 and the drive rod 43 will be restored, and the gear 232 will still be restored to the meshing relationship with the tooth groove 221, without affecting the gear 232 to drive the inner sleeve 22 to extend. If the inner sleeve 22 has not retracted to the inside of the outer sleeve 21 before the attachment frame 31 swings, the advancing steel wheel 80 is likely to crush the inner sleeve 22 and the probe head 51. However, through the working principle of the above-mentioned protection mechanism 60 in this solution, in the initial movement of the attachment frame 31 swinging, the gear 232 is separated from the tooth groove 221, and the inner sleeve 22 is quickly pulled back by the first 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 with the support rod 42 as the axis, its movement trajectory is arc-shaped. Similarly, the movement trajectory of the first bearing 233 inside the assembly hole 235 is also arc-shaped, and the opening shape of the assembly hole 235 satisfies the movement trajectory of the first bearing 233.

[0078] As shown in Figures 11 - 16, the protection mechanism II 70 includes a reel 71 fixedly assembled at 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 first steel wire rope 72 is wound around the reel 71. The length of the first steel wire rope 72 is less than the length of the slide rail 11. The first steel wire rope 72 is elastically rotatable to wind up the first steel wire rope 72 (similar to an existing tape measure). One end of the first steel wire rope 72 is connected to a connecting piece 73. The connecting piece 73 is fixedly assembled on the slide block 12. The slide block 12 is connected to the pin rod 352 through 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. As Figure 14 shown, the second steel wire rope 74 has a length to ensure the normal rotation of the first rotating shaft 32. The connecting piece 73 includes a shuttle column 731 and a clamping seat 734. The shuttle column 731 connects the second steel wire rope 74 and the first steel wire rope 72. A through groove 732 is formed on the arc surface of the shuttle column 731. A V-shaped elastic piece 733 is fixedly assembled inside the through groove 732. Both ends of the V-shaped elastic piece 733 extend to the outside of the shuttle column 731. The clamping seat 734 is fixedly assembled on the upper surface of the slide block 12. The shuttle column 731 is movably inserted on the surface of the clamping seat 734 and is limited by the V-shaped elastic piece 733 to pull the first steel wire rope 72.

[0079] Specifically, the total length of the first steel wire rope 72 and the second steel wire rope 74 is the displacement range of the normal operation of the slide block 12, that is, the preset range mentioned above. To prevent the control of the attachment frame 31 from failing and causing the inability to switch from the erected state to the lying state, and further causing the attachment frame 31 to be broken by the moving steel wheel 80 after the slide block 12 slides to the end of the slide rail 11; in this solution: during the movement of the slide block 12 to the steel wheel 80, when the first steel wire rope 72 is completely pulled out from the reel 71, the first steel wire rope 72 will pull the shuttle column 731 out of the clamping seat 734. Subsequently, the second steel wire rope 74 is straightened to pull the pin rod 352 out of the socket 35, prompting the socket 35 to form a rotational connection relationship with the first rotating shaft 32, so that the attachment frame 31 can fall smoothly and avoid being broken by the advancing steel wheel 80. Among them, the socket 35 still has the condition to trigger the protection mechanism I 60 through the through rod 351. That is to say, even if the control of the telescopic mechanism 20 and the follower mechanism 30 fails, the protection mechanism I 60 and the protection mechanism II 70 can ensure that the telescopic mechanism 20 and the follower mechanism 30 are not damaged.

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

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

[0082] S2: The slide block 12 is located at the initial position. Control the attachment frame 31 to switch from the lying state to the erected state between two adjacent steel wheels 80 and lock the state through the push rod lock 34. Subsequently, the attachment frame 31 fits to the side of the wheel rim 81 of the oncoming steel wheel 80, forcing the slide block 12 to move synchronously with the steel wheel 80:

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

[0084] S4: After the detection is completed, first control the telescopic rod mechanism 20 to retract, then control the accompanying mechanism 30 to reset from the erected state to the lying state, and finally control the slide seat 12 to reset to the initial position.

[0085] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A large-span steel wheel thickness gauge, characterized in that, Including: A slide table mechanism (10) having a slide base (12), on which a follower mechanism (30) and an assembly mechanism (40) are assembled, and two telescopic rod mechanisms (20) are symmetrically assembled on both sides of the follower mechanism (30); two probe heads (51), which are correspondingly assembled at the extended ends of the two telescopic rod mechanisms (20). The follower mechanism (30) includes a mounting frame (31) and a push rod lock (34). When the mounting frame (31) lies flat, the steel wheel (80) passes from above; when the mounting frame (31) stands up, it fits against one side of the rim (81) of the steel wheel (80), forcing the slide base (12) to move synchronously with the steel wheel (80). The probe head (51) extends towards one side of the tread (82) of the steel wheel (80) at a preset angle through the telescopic rod mechanism (20), so that the two probe heads (51) are symmetric with respect to the center of the dynamic steel wheel (80), forming a measurement area for the thickness wear of the tread (82). It also includes a first protection mechanism (60) and a second protection mechanism (70). The first protection mechanism (60) cooperates with the mounting frame (31) to force the telescopic rod mechanism (20) with a control reset failure to reset; the second protection mechanism (70) cooperates with the moving follower mechanism (30) to force the mounting frame (31) with a control failure to reset.

2. The thickness gauge for large-span steel wheels according to claim 1, characterized in that: The follower mechanism (30) further includes a first rotating shaft (32) and a push rod lock (34). The first rotating shaft (32) is rotatably assembled on the slide base (12) through a second bearing (33). A socket (35) is sleeved at one end of the first rotating shaft (32). A through rod (351) on one side of the socket (35) rotates through to the other end of the first rotating shaft (32). A pin rod (352) is inserted between the socket (35) and the first rotating shaft (32). The mounting frame (31) is fixedly assembled on the socket (35). The push rod lock (34) is fixed on the slide base (12) through a mounting seat (341). The push rod lock (34) locks the rotating state of the first rotating shaft (32). A torsion spring (36) is arranged between the first rotating shaft (32) and the second bearing (33), and a first limiting block (324) is fixedly arranged on the arc surface of the first rotating shaft (32).

3. The thickness gauge for large-span steel wheels according to claim 2, characterized in that: A plurality of rollers (311) are assembled on the mounting frame (31).

4. The thickness gauge for large-span steel wheels according to claim 3, wherein: The slide table mechanism (10) includes a slide rail (11), which is fixedly assembled below one side of the railway track (90) and is parallel to the railway track (90). The slide base (12) slides on the slide rail (11). A reset belt (13) is assembled along the length direction on the lower side of the slide rail (11). The upper side of the reset belt (13) is fixedly connected to the lower surface of the slide base (12). The reset belt (13) is supported by two pulley A on the lower side of the slide rail (11), and a reset motor (14) is arranged on one side of one of the pulley A.

5. The thickness gauge for large-span steel wheels according to claim 4, wherein: The assembly mechanism (40) includes a plate base (41) fixedly assembled on one side of the sliding seat (12). A support rod (42) is fixedly arranged on the upper side of the plate base (41). The support rod (42) fixedly supports two telescopic rod mechanisms (20) obliquely. 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 driving rod (43) is also rotatably installed on one side of the side support frame (44). The driving rod (43) is driven by a stepping motor (45) fixedly assembled on the side support frame (44), so that the driving rod (43) further drives the two telescopic rod mechanisms (20) to operate synchronously.

6. The thickness gauge for large-span steel wheels according to claim 5, wherein: The telescopic rod mechanism (20) includes an outer sleeve (21) and an inner sleeve (22). The inner sleeve (22) is nested inside the outer sleeve (21). A control component (23) for driving the inner sleeve (22) to extend is provided at the upper end of the outer sleeve (21). A first pulling spring (211) for pulling the inner sleeve (22) to retract is arranged inside the outer sleeve (21). The measuring head (51) is fixed to the outer end of the inner sleeve (22).

7. The thickness gauge for large-span steel wheels according to claim 6, characterized in that: The control component (23) includes a cover body (231) fixedly assembled on the side of the outer sleeve (21). A gear (232) is rotatably assembled inside the cover body (231) through a first bearing (233). After the gear (232) passes through the inner ring of the first bearing (233) through a coaxial fixed connection shaft rod (234), it is coaxially fixedly connected with the driving rod (43). A tooth groove (221) is formed on the side of the inner sleeve (22). The tooth groove (221) is movably engaged with the gear (232). An assembly hole (235) for assembling the first bearing (233) is formed on the surface of the cover body (231). The first bearing (233) can move away from the tooth groove (221) direction in the assembly hole (235). A pushing spring (236) for pushing the first bearing (233) to move close to the tooth groove (221) is also arranged in the assembly hole (235).

8. The thickness gauge for large-span steel wheels according to claim 7, wherein: The first protection mechanism (60) includes a swing frame (61). One end of the swing frame (61) is rotatably installed on the side of the mounting seat (341), and the other end is fixedly connected with a top block (62). A brake wire (64) is also connected to the swing frame (61) near the rotating end. One end of the brake wire (64) is connected with the side support frame (44). A convex block (63) is fixedly connected to the side of the through rod (351). The convex block (63) swings synchronously with the attaching frame (31). When the convex block (63) swings, it pushes the top block (62), so that the swing frame (61) rotates around one end axis, generating a pull on the brake wire (64), and further pulling the side support frame (44) downward.

9. The thickness gauge for large-span steel wheels according to claim 8, characterized in that: The second protection mechanism (70) includes a reel (71) fixedly mounted on one end of the slide rail (11), a steel wire rope (72) wound on 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 the slide seat (12), the slide seat (12) is connected to the pin (352) through the steel wire rope (74), the total length of the steel wire rope (72) and the steel wire rope (74) is less than the length of the slide rail (11), the connector (73) includes A shuttle post (731) and a clamping seat (734), wherein the shuttle post (731) connects the second steel wire rope (74) with the first steel wire rope (72), the arc surface of the shuttle post (731) is provided with a through groove (732), the inner side of the through groove (732) is fixedly equipped with a V-shaped spring piece (733), the two ends of the V-shaped spring piece (733) extend to the outside of the shuttle post (731), the clamping seat (734) is fixedly assembled on the upper surface of the slide (12), the shuttle post (731) is movably inserted into the surface of the clamping seat (734), and is limited by the V-shaped spring piece (733) to pull the first steel wire rope (72).

10. A method for measuring the thickness of a large-span steel wheel, according to the thickness gauge for a large-span steel wheel described in claim 9, 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, and the control frame (31) is switched from the horizontal state to the upright state between the two adjacent steel wheels (80), and locked by the push rod lock (34). Subsequently, the frame (31) is attached 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: Start the two extension rod mechanisms (20), and move the two probes (51) at an oblique upward angle to avoid the shielding structure outside the steel wheel (80) and to the side of the tread (82), and perform thickness detection on the dynamic steel wheel (80); S4: After the detection is completed, the extension rod mechanism (20) is first controlled to retract, and then the accompanying mechanism (30) is controlled to return from the upright state to the horizontal state, and finally the slide (12) is controlled to return to the initial position.

Images