Adaptive positioning mechanism and positioning method for track enhanced vehicle traveling along track

Abstract

The application discloses an adaptive positioning mechanism of a track enhanced vehicle running along a track, which comprises a longitudinal cylinder, a transverse cylinder, a bottom plate, an accessory mounting plate and a positioning wheel device; the accessory mounting plate is used for mounting at least one accessory including a laser head group mechanism, a heating head mechanism and a spray gun mechanism; the telescopic shaft of the longitudinal cylinder is longitudinally connected with the bottom plate, and the lower surface of the bottom plate is provided with a sliding rail; the telescopic shaft of the transverse cylinder is transversely connected with the accessory mounting plate, and a sliding block is arranged on the upper surface of the accessory mounting plate; the sliding block can move transversely along the sliding rail; the thrust of the longitudinal cylinder can keep the wheel surface of the wheel main part close to the top surface of the track at any time, and the thrust of the transverse cylinder can keep the side surface of the wheel side part close to the side surface of the track at any time, so that the distance between the accessory on the accessory mounting plate and the track is kept unchanged; and then the influence of the relative position change between the track enhanced vehicle and the track on the enhancement effect is eliminated.

Description

Technical Field

[0001] This invention relates to a positioning mechanism for a track-enhanced vehicle, and more particularly to an adaptive positioning mechanism and positioning method for a track-enhanced vehicle traveling along a track. Background Technology

[0002] With the rapid development of technology in the rail transit field, rail strengthening technology has also made remarkable progress. In particular, the method of strengthening the rail surface using lasers has attracted widespread attention.

[0003] The applicant discloses a highly efficient and stable vehicle-mounted track strengthening treatment device that can operate on tracks. Specifically, the track strengthening treatment device is installed on a vehicle running on the track. The track strengthening device includes a spraying device, a laser device, and a drying device. The heating head in the drying device heats the surface of the corresponding track section, and the spraying gun head of the spraying device sprays a strengthening material onto the heated track surface. The laser head of the laser device emits a laser beam that scans the track section sprayed with the strengthening material, causing the alloy coating to undergo a metallurgical chemical reaction with the track surface structure, forming a strengthening layer on the track surface, thereby strengthening the track.

[0004] When a rail-based augmentation vehicle operates on a track, certain mechanisms, such as the laser head assembly, heating head assembly, and spray gun assembly, need to maintain a constant distance from the track. Any change in distance will weaken or even eliminate the augmentation effect. However, in actual operation, the track may undulate, and the track spacing may change. These changes will alter the relative position of the rail-based augmentation vehicle to the track. Therefore, an auxiliary mechanism is necessary to mitigate the impact of these distance variations on the augmentation effect. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide an adaptive positioning mechanism and positioning method for track-enhanced vehicles traveling along a track.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an adaptive positioning mechanism for a track-enhanced vehicle traveling along a track, which is connected and fixed to the track-enhanced vehicle through a mechanism mounting plate; including a longitudinal cylinder, a transverse cylinder, a base plate, an accessory mounting plate, and a positioning wheel device;

[0007] The positioning wheel device includes a wheel frame and a positioning wheel that contacts the track. The accessory mounting plate is fixed to the wheel frame. The accessory mounting plate is used to install at least one accessory, including a laser head assembly mechanism, a heating head mechanism, and a spray gun mechanism.

[0008] The positioning wheel includes a main part that contacts the top surface of the track and a side part that contacts the side surface of the track;

[0009] The body of the longitudinal cylinder is fixed on the mechanism mounting plate, the telescopic shaft of the longitudinal cylinder is longitudinally connected to the base plate, the body of the transverse cylinder is mounted on the base plate, and the lower surface of the base plate is provided with a slide rail.

[0010] The telescopic shaft of the transverse cylinder is laterally connected to the accessory mounting plate, and the slider is located on the upper surface of the accessory mounting plate; the slider can move laterally along the slide rail.

[0011] When the longitudinal distance between the track-strengthened vehicle body and the track changes, the thrust of the longitudinal cylinder can keep the wheel surface of the wheel main part in close contact with the top surface of the track at all times, thereby ensuring that the longitudinal distance between the accessories on the accessory mounting plate and the track remains unchanged.

[0012] When the lateral distance between the track-reinforced vehicle body and the track changes, the thrust of the lateral cylinder can keep the side of the wheel side in close contact with the side of the track at all times, thereby ensuring that the lateral distance between the accessories on the accessory mounting plate and the track remains unchanged.

[0013] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the telescopic shaft of the longitudinal cylinder is connected to the base plate through a connecting block and a stop block assembly;

[0014] The center of the connecting block is located in the threaded hole, and the lower end of the telescopic shaft of the longitudinal cylinder is screwed into the threaded hole of the connecting block and tightened with a nut.

[0015] The stop block assembly is fixed to the base plate by fasteners. The stop block assembly is provided with a cavity for accommodating the connecting block and a channel for the telescopic shaft and nut of the longitudinal cylinder to extend into.

[0016] The stop assembly is provided with a limiting wall, which restricts the connecting block within the cavity;

[0017] The connecting block and the cavity have a circumferential movement gap and a longitudinal movement gap, so that the connecting block can move within the cavity.

[0018] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the connecting block includes a first column on the upper side and a second column on the lower side; the cavity includes a small inner diameter portion that matches the first column and a large inner diameter portion that matches the second column;

[0019] The small inner diameter portion and the large inner diameter portion are stepped to form an upper limit wall located on the upper surface of the second column;

[0020] There is a circumferential clearance between the first column and the inner peripheral wall of the small inner diameter portion, and between the second column and the inner peripheral arm of the large inner diameter portion; there is a longitudinal clearance between the second column and the large inner diameter portion.

[0021] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the stop assembly includes a first stop and a second stop connected in parallel; the first stop and the second stop are respectively fixed on the base plate;

[0022] The inner surfaces of the first and second blocks are provided with semi-hole grooves, and the two semi-hole grooves enclose each other to form the cavity and channel.

[0023] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: it further includes a support plate, which is fixed on the mechanism mounting plate and parallel to the base plate;

[0024] The body of the longitudinal cylinder is fixed above the support plate, and the telescopic shaft of the longitudinal cylinder extends downward through the support plate.

[0025] A plurality of Z-guide post assemblies are provided between the support plate and the base plate. Each Z-guide post assembly includes a guide sleeve fixed on the support plate and a guide shaft fixed on the base plate. The guide shaft moves within the guide sleeve.

[0026] The guide shaft has a longitudinal hole above it, and the guide sleeve has an anti-detachment pin that passes through the longitudinal hole and moves within the longitudinal hole.

[0027] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the telescopic shaft of the transverse cylinder is connected to the accessory mounting plate through a transverse shaft;

[0028] A bearing seat is provided below the base plate, and the horizontal shaft passes through the shaft hole of the bearing seat;

[0029] The outer end of the horizontal shaft is provided with a connector, and the connector is provided with a T-shaped groove with an opening facing the horizontal cylinder;

[0030] The end of the telescopic shaft of the transverse cylinder is connected to a limiting head, which is restricted within the wide diameter portion inside the T-slot.

[0031] There is a circumferential movement gap and a lateral movement gap between the limiting head and the wide diameter portion.

[0032] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problem is: the upper part of the bearing seat and the lower part of the base plate are connected by a concave-convex inlay method.

[0033] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the inner surface of the wheel side is a vertical surface, and the contact between the inner surface of the wheel side and the side of the track is a line contact;

[0034] The lower generatrix of the wheel surface of the main wheel is horizontal, and the contact between the wheel surface of the main wheel and the top surface of the track is point contact or line contact.

[0035] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the accessory mounting plate is provided with a laser sensor to measure the distance from the emission point to the track surface, and is used to detect whether the wheel body or the wheel side is in contact with the track; the laser sensor is connected to the alarm system.

[0036] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the speed encoder is connected to the shaft of the positioning wheel through a flexible coupling, and the actual operating speed of the track-enhanced vehicle is known by reading the data of the speed encoder.

[0037] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: a positioning method for an adaptive positioning mechanism of a track-enhanced vehicle traveling along a track.

[0038] When the track-enhanced vehicle is not in operation while traveling along the track, the telescopic shaft of the lateral cylinder pulls the accessory mounting plate away from the track, and the wheel side of the positioning wheel moves laterally away from the track; the telescopic shaft of the longitudinal cylinder pulls the base plate upward, and the lower surface of the main body of the positioning wheel does not contact the top surface of the track.

[0039] Upon receiving the work instruction, the telescopic shaft of the longitudinal cylinder extends, and the main part of the positioning wheel contacts the top surface of the track; then the telescopic shaft of the transverse cylinder extends, and the side part of the positioning wheel contacts the side of the track, and normal operation begins.

[0040] After the operation is completed, the telescopic shaft of the transverse cylinder retracts, and the side of the positioning wheel separates from the side of the track first. Then the telescopic shaft of the longitudinal cylinder retracts, and the positioning wheel completely separates from the track.

[0041] Compared with the prior art, the advantages of the present invention are that the thrust of the longitudinal cylinder can keep the wheel surface of the wheel main part in close contact with the top surface of the rail at all times, thereby ensuring that the longitudinal distance between the accessories on the accessory mounting plate and the rail remains unchanged; the thrust of the transverse cylinder can keep the side of the wheel side part in close contact with the side of the rail at all times, thereby ensuring that the transverse distance between the accessories on the accessory mounting plate and the rail remains unchanged; thus eliminating the influence of the relative position change between the rail reinforcement vehicle and the rail on the reinforcement effect. Attached Figure Description

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0043] Figure 1 A diagram illustrating the application scenario of an adaptive positioning mechanism for track-enhanced vehicles;

[0044] Figure 2 A schematic diagram of the adaptive positioning mechanism for a track-enhanced vehicle;

[0045] Figure 3 A partial schematic diagram of the adaptive positioning mechanism for a track-enhanced vehicle;

[0046] Figure 4 A schematic diagram of the assembly of the longitudinal cylinder for the adaptive positioning mechanism of a track-enhanced vehicle.

[0047] Figure 5 A schematic diagram of the assembly of the Z-axis guide column assembly for the adaptive positioning mechanism of a track-enhanced vehicle;

[0048] Figure 6 Assembly diagram of the lateral cylinder for the adaptive positioning mechanism of the track-enhanced vehicle Figure 1 ;

[0049] Figure 7 Assembly diagram of the lateral cylinder for the adaptive positioning mechanism of the track-enhanced vehicle Figure 2 ;

[0050] Figure 8 Schematic diagram of the positioning wheel device for the adaptive positioning mechanism of a track-enhanced vehicle Figure 1 ;

[0051] Figure 9 Schematic diagram of the positioning wheel device for the adaptive positioning mechanism of a track-enhanced vehicle Figure 2 ;

[0052] Figure 10 Schematic diagram of the positioning wheel device for the adaptive positioning mechanism of a track-enhanced vehicle Figure 3 . Detailed Implementation

[0053] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention.

[0054] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0055] like Figure 1As shown, this embodiment provides an adaptive positioning mechanism 100 for a track-enhanced vehicle traveling along a track. The track-enhanced vehicle includes a vehicle body and a laser head assembly mechanism, a heating head mechanism A, and a spray gun mechanism B on the vehicle body. The heating head mechanism A includes a heating head, the spray gun mechanism B includes a spray gun head, and the laser head assembly mechanism includes a laser head. The heating head, spray gun head, and laser head are arranged sequentially along the length of the vehicle body at the bottom of the vehicle body.

[0056] The operating process of this track-enhanced vehicle dictates that the heating head, spray gun head, and laser head must maintain a constant distance from the track 200 while the vehicle is operating on the track. If the distance changes, the enhancement effect will weaken or even disappear.

[0057] However, in actual operation, the track will undulate and the track spacing will change, which will cause changes in the relative position of the track reinforcement vehicle and the track. At this time, an adaptive positioning mechanism is necessary to eliminate the impact of these distance changes on the reinforcement effect.

[0058] like Figure 2 As shown, the adaptive positioning mechanism 100 of the track-enhanced vehicle traveling along the track includes a longitudinal cylinder 1, a transverse cylinder 2, a base plate 3, an accessory mounting plate 4, and a positioning wheel device M. The whole is connected and fixed to the track-enhanced vehicle through the mechanism mounting plate 7.

[0059] like Figure 8 As shown, the positioning wheel device M includes a wheel frame 6 and a positioning wheel 5 that contacts the track. The positioning wheel 5 includes a main wheel portion 5a that contacts the top surface of the track and a side wheel portion 5b that contacts the side surface of the track.

[0060] The accessory mounting plate 4 is fixed to the wheel frame 6. The accessory mounting plate 4 is used to install at least one accessory, including the laser head assembly mechanism, the heating head mechanism A, and the spray gun mechanism B.

[0061] like Figure 3 As shown, the body 1a of the longitudinal cylinder is fixed on the mechanism mounting plate 7, and the telescopic shaft 1b of the longitudinal cylinder is longitudinally connected to the base plate 3. The body 2a of the transverse cylinder is mounted on the base plate 3, and the lower surface of the base plate 3 is provided with a slide rail 8. The telescopic shaft 2b of the transverse cylinder is transversely connected to the accessory mounting plate 4, and the slider 9 is located on the upper surface of the accessory mounting plate 4. The slider 9 can move transversely along the slide rail 8.

[0062] When the longitudinal distance between the track-strengthened vehicle body and the track changes, the thrust of the longitudinal cylinder 1 can keep the wheel surface of the wheel main part 5a in close contact with the top surface of the track at all times, thereby ensuring that the longitudinal distance between the accessories on the accessory mounting plate 4 and the track remains unchanged.

[0063] When the lateral distance between the track-strengthened vehicle body and the track changes, the thrust of the lateral cylinder 2 can keep the side of the wheel side 5b in close contact with the side of the track at all times, thereby ensuring that the lateral distance between the accessories on the accessory mounting plate 4 and the track remains unchanged.

[0064] Since the relative distance between the attachments on the attachment mounting plate 4 and the track remains constant, each attachment can be set independently on an adaptive positioning mechanism, or multiple attachments can be set together on an adaptive positioning mechanism.

[0065] Preferably, such as Figure 1-3 As shown, in this embodiment, the heating head mechanism A and the spray gun mechanism B are mounted on the accessory mounting plate 4 of the same adaptive positioning mechanism, thereby saving space, making the structure more compact, and ensuring that the time interval between heating and spraying is small. Then, the residual heat after the heating head heats the track is used to dry the coating material.

[0066] like Figure 3-4 As shown, the telescopic shaft 1b of the longitudinal cylinder is connected to the base plate 3 through the connecting block 10 and the stop assembly 11, so that the extension of the telescopic shaft 1b of the longitudinal cylinder can push the base plate 3.

[0067] The longitudinal cylinder 1 is a double-acting cylinder that extends and retracts, and its rated stroke is greater than its actual stroke. Preferably, in this embodiment, the rated stroke of the longitudinal cylinder 1 is 75 mm, and the actual stroke used is 55 mm.

[0068] When the rail-reinforced vehicle is in operation, the telescopic shaft 1b of the longitudinal cylinder extends downwards to press against the base plate 3, thereby pressing the entire positioning wheel device M downwards onto the rail. At this time, the stroke of the longitudinal cylinder 1 is not fully utilized, thus exerting a continuous downward force on the rail. This continuous force ensures that when the longitudinal distance between the rail-reinforced vehicle body and the rail changes, the longitudinal distance between the attachments on the attachment mounting plate 4 and the rail remains constant. After the positioning wheel device M has completed its operation, the telescopic shaft 1b of the longitudinal cylinder retracts, driving the mechanism upwards, and the positioning wheel device M disengages longitudinally from the rail.

[0069] Specifically, such as Figure 4 As shown, the center of the connecting block 10 is located in the threaded hole. The lower end of the telescopic shaft 1b of the longitudinal cylinder is screwed into the threaded hole of the connecting block 10 and tightened with a nut 12. The nut 12 is located on the side of the connecting block 10 close to the body 1a of the longitudinal cylinder.

[0070] like Figure 4As shown, the stop assembly 11 is fixed to the base plate 3 by fasteners. The stop assembly 11 has a cavity k for accommodating the connecting block 10 and a channel t for the extension shaft 1b of the longitudinal cylinder and the nut 12 to extend into. The cavity k can be a full cavity within the stop assembly 11 or a recessed cavity on the lower end face of the stop assembly 11, with the recessed cavity and the base plate 3 enclosing the full cavity. The channel t is located on the upper side of the cavity k, and the stop assembly 11 has a limiting wall that restricts the connecting block 10 within the cavity k. There are circumferential and longitudinal movement clearances between the connecting block 10 and the cavity k, allowing the connecting block 10 to move within the cavity k in a limited manner. This flexible connection method ensures that the longitudinal cylinder 1 is only subjected to axial force and not radial force during operation, thereby eliminating the deformation of the extension shaft 1b of the longitudinal cylinder caused by radial force, greatly improving the stability of the mechanism and the life of the cylinder.

[0071] like Figure 4 As shown, the connecting block 10 includes an upper first column 10a and a lower second column 10b. The cavity k includes a small inner diameter portion k1 that matches the first column 10a and a large inner diameter portion k2 that matches the second column 10b. The small inner diameter portion k1 and the large inner diameter portion k2 are stepped to form an upper limit wall on the upper surface of the second column 10b. The small inner diameter portion k1 is connected to the channel t. A circumferential clearance exists between the inner circumferential walls of the first column 10a and the small inner diameter portion k1, and between the inner circumferential arms of the second column 10b and the large inner diameter portion k2. A longitudinal clearance exists between the second column 10b and the large inner diameter portion k2. By configuring the connecting block 10 as a stepped column structure, the cooperation of the first column 10a and the small inner diameter portion k1 guides the axial movement of the telescopic shaft 1b of the longitudinal cylinder, ensuring that the force is vertically downward.

[0072] More preferably, such as Figure 3-4 As shown, the stop assembly 11 includes a first stop 11a and a second stop 11b that are connected side-by-side. The first stop 11a and the second stop 11b are respectively fixed to the base plate 3. The inner surfaces of the first stop 11a and the second stop 11b are provided with semi-hole grooves, and the two semi-hole grooves enclose a cavity and a channel t. The stop assembly 11 is set as a split structure, which facilitates the disassembly and maintenance of the entire structure.

[0073] like Figure 3 , 5 As shown, the adaptive positioning mechanism of the track-enhanced vehicle traveling along the track also includes a support plate 13, which is fixed on the mechanism mounting plate 7 and parallel to the base plate 3.

[0074] The body 1a of the longitudinal cylinder is fixed above the support plate 13, and the telescopic shaft 1b of the longitudinal cylinder extends downward through the support plate 13. Several Z-guide post assemblies D are provided between the support plate 13 and the base plate 3. The Z-guide post assemblies D guide and support the vertical movement of the base plate 3, especially bearing the radial force when the telescopic shaft 1b of the longitudinal cylinder moves.

[0075] Z-guide column assembly D includes a guide shaft seat 14 fixed on a support plate 13 and a guide shaft 15 fixed on a base plate 3. The guide shaft seat 14 has a central hole that matches the guide shaft 15, and the guide shaft 15 moves within the guide shaft seat 14. A longitudinal elongated hole y is provided above the guide shaft 15, and an anti-detachment pin 16 is provided on the guide shaft seat 14 passing through the longitudinal elongated hole y, moving within the longitudinal elongated hole y. The anti-detachment pin 16 and the longitudinal elongated hole y prevent the guide shaft 15 from detaching during transportation or other conditions.

[0076] Preferably, such as Figure 3 , 5 As shown, the guide shaft seat 14 includes a central annular mounting portion g, which has several mounting holes. The guide shaft seat 14 rests on the support plate 13 via the annular mounting portion g, and its lower end passes through the support plate 13. The inner hole of the guide shaft seat 14 has an annular recess, within which a longitudinal bushing is embedded. The inner wall of the longitudinal bushing is flush with the inner wall of the central hole of the guide shaft seat 14, and the guide shaft 15 passes through the longitudinal bushing. The longitudinal bushing is made of graphite-coated brass, which has a self-lubricating effect, thus making the Z-guide post assembly D move more smoothly and have a longer service life.

[0077] like Figure 3 , 6 As shown, the telescopic shaft 2b of the transverse cylinder is connected to the accessory mounting plate 4 via the transverse shaft 18. A bearing seat 19 is provided below the base plate 3, and the transverse shaft 18 passes through the shaft hole of the bearing seat 19 to connect to the accessory mounting plate 4.

[0078] like Figure 3 , 6 As shown in Figure 7, the outer end of the horizontal shaft 18 is provided with a connector n, and the connector n has a T-slot u with an opening facing the horizontal cylinder 2. The end of the telescopic shaft 2b of the horizontal cylinder is connected to a limiting head j, which is confined within the wide diameter portion inside the T-slot u. There are circumferential and lateral movement clearances between the limiting head j and the wide diameter portion. The circumferential and lateral movement clearances between the connector n and the limiting head j ensure that the horizontal cylinder 2 is only subjected to axial force and not radial force, thereby improving the service life and accuracy of the horizontal cylinder 2.

[0079] The transverse cylinder 2 is a double-acting cylinder that extends and retracts, and its rated stroke is greater than its actual stroke. Preferably, in this embodiment, the rated stroke of the transverse cylinder 2 is 75mm, and the actual stroke used is 55mm.

[0080] Preferably, in this embodiment, in order to maintain the stability and balance of the lateral movement, two lateral cylinders 2 are arranged side by side and connected to the accessory mounting plate 4 in the same way.

[0081] During operation, both lateral cylinders 2 extend simultaneously, synchronously pushing the accessory mounting plate 4 and the positioning wheel 5 laterally towards the track until they are pressed against it. At this point, the stroke of the lateral cylinders 2 is not fully utilized, thus providing a continuous lateral pressing force to the track. This continuous force ensures that when the actual track spacing changes, the positioning wheel 5 remains firmly attached to the track, thereby maintaining a constant lateral distance between the accessory on the accessory mounting plate 4 and the track. After operation, the lateral cylinders 2 retract, driving the positioning wheel device M to move away from the track, and the positioning wheel 5 laterally disengages from the track.

[0082] Preferably, such as Figure 7 As shown, a transverse bushing 22 adapted to the transverse shaft 18 is embedded in the shaft hole of the bearing seat 19. The transverse bushing 22 is a graphite-coated brass bushing, which has a self-lubricating effect, making the mechanism run more smoothly and extending the service life of the transverse cylinder 2.

[0083] like Figure 6 As shown, the upper part of the bearing seat 19 and the lower part of the base plate 3 are connected by a recessed-convex fitting method. Specifically, the lower part of the base plate 3 has a groove e extending horizontally perpendicular to the transverse axis 18, and the upper part of the bearing seat 19 has a corresponding protrusion f that is embedded in the groove e. This recessed-convex fitting connection method not only strengthens the mechanism but also greatly reduces the machining of precision surfaces, thus reducing costs.

[0084] like Figure 8-10 As shown, the top surface of the track initially presents a rounded, raised shape before wear. However, in this embodiment, the lower generatrix of the wheel surface of the wheel main part 5a is horizontal, and the contact between the wheel surface of the wheel main part 5a and the top surface of the track is a point contact. But when processing a track that has already experienced some wear, the contact between the wheel surface of the wheel main part 5a and the top surface of the track becomes a line contact.

[0085] like Figure 8-10 As shown, the inner surface of the wheel side portion 5b is a vertical surface, and the contact between the inner surface of the wheel side portion 5b and the side of the track is a line contact. That is, in the longitudinal section, the inner surface of the wheel side portion 5b only has a single point of contact with the side of the track.

[0086] Based on the above, it can be ensured that the contact position between the positioning wheel 5 and the track is the same each time, and friction can be reduced, thereby reducing the force required for the movement of the mechanism.

[0087] It should be noted that when the track-reinforced vehicle is not in operation while traveling along the track, both the longitudinal cylinder 1 and the transverse cylinder 2 are in a retracted state. The telescopic shaft 2b of the transverse cylinder pulls the transverse shaft 18 away from the track, thereby causing the accessory mounting plate 4 to move along the slide rail 8, and thus causing the positioning wheel 5 to move laterally away from the track. Meanwhile, the telescopic shaft 1b of the longitudinal cylinder pulls the base plate 3 upward, causing the entire lower mechanism to move upward, thereby preventing the lower surface of the positioning wheel 5 from contacting the top surface of the track.

[0088] Upon receiving the work order, the telescopic shaft 1b of the longitudinal cylinder extends, and the main part 5a of the positioning wheel 5 contacts the top surface of the track. Then, the telescopic shaft 2b of the transverse cylinder extends, and the side part 5b of the positioning wheel 5 contacts the side of the track, thus initiating normal operation.

[0089] After the operation is completed, the telescopic shaft 2b of the transverse cylinder retracts, the wheel side 5b of the positioning wheel 5 disengages from the side of the track first, and then the telescopic shaft 1b of the longitudinal cylinder retracts, thereby completely disengaging the positioning wheel 5 from the track.

[0090] When starting and finishing a task, the cylinders operate in the sequence described above to ensure that the positioning wheel 5 reaches the set state, thereby ensuring the accuracy of the positioning.

[0091] like Figure 8 As shown, the mounting plate 4 is equipped with a laser sensor 20. The function of the laser sensor 20 is to detect whether the positioning wheel 5 is in position, specifically whether the main body 5a or the side of the wheel is in contact with the track. Its function is to detect the distance from the laser emission point to the track surface. The detection distance data under compliant conditions is used as the standard. If the positioning wheel 5 is not in position in any direction, either laterally or longitudinally, the data measured by the laser sensor 20 will exceed the set standard value. The laser sensor 20 is connected to an alarm system. When the data measured by the laser sensor 20 exceeds the set standard value, the system receives this signal and issues an alarm.

[0092] Preferably, during operation, when the positioning wheel 5 briefly disengages from the track in either direction, the longitudinal cylinder 1 or the transverse cylinder 2 takes a certain amount of time to push the positioning wheel 5 back onto the track. However, this time is extremely short, not exceeding 1 second, typically 0.2-0.4 seconds. Within this timeframe, the sensor can detect abnormal distances, but such a short period will not affect the operational performance and can be considered normal. To prevent false alarms, the system needs to set a delay value for the sensor. An alarm will sound if the abnormal distance duration exceeds the set value, but will not sound if it is less than or equal to the set value.

[0093] like Figure 8As shown, the positioning wheel 5 is connected to the wheel frame 6 via a shaft. During operation, the positioning wheel 5 rolls on the track, and its linear velocity is consistent with the forward speed of the track-reinforcing vehicle. The speed encoder 21 is connected to the shaft of the positioning wheel 5 via a flexible coupling 23, and the speed encoder 21 can detect the rotational speed of the positioning wheel 5. Since the diameter of the positioning wheel 5 is known, its linear velocity can be calculated, thus obtaining the forward speed of the track-reinforcing vehicle traveling along the track during operation, and consequently, the actual operating speed of the track-reinforcing vehicle.

[0094] The adaptive positioning mechanism and positioning method for track-enhanced vehicles traveling along a track provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the present invention and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An adaptive positioning mechanism for a track-enhanced vehicle traveling along a track, which is connected and fixed to the track-enhanced vehicle via a mechanism mounting plate; characterized in that: Includes longitudinal cylinders, transverse cylinders, base plate, accessory mounting plate, and positioning wheel assembly; The positioning wheel device includes a wheel frame and a positioning wheel that contacts the track. The accessory mounting plate is fixed to the wheel frame. The accessory mounting plate is used to install at least one accessory, including a laser head assembly mechanism, a heating head mechanism, and a spray gun mechanism. The positioning wheel includes a main part that contacts the top surface of the track and a side part that contacts the side surface of the track; The body of the longitudinal cylinder is fixed on the mechanism mounting plate, the telescopic shaft of the longitudinal cylinder is longitudinally connected to the base plate, the body of the transverse cylinder is mounted on the base plate, and the lower surface of the base plate is provided with a slide rail. The telescopic shaft of the transverse cylinder is laterally connected to the accessory mounting plate, and the slider is located on the upper surface of the accessory mounting plate; the slider can move laterally along the slide rail. When the longitudinal distance between the track-strengthened vehicle body and the track changes, the thrust of the longitudinal cylinder can keep the wheel surface of the wheel main part in close contact with the top surface of the track at all times, thereby ensuring that the longitudinal distance between the accessories on the accessory mounting plate and the track remains unchanged. When the lateral distance between the track-strengthened vehicle body and the track changes, the thrust of the lateral cylinder can keep the side of the wheel side in close contact with the side of the track at all times, thereby ensuring that the lateral distance between the accessories on the accessory mounting plate and the track remains unchanged. The telescopic shaft of the longitudinal cylinder is connected to the base plate via a connecting block and a stop block assembly; The center of the connecting block is located in the threaded hole, and the lower end of the telescopic shaft of the longitudinal cylinder is screwed into the threaded hole of the connecting block and tightened with a nut. The stop block assembly is fixed to the base plate by fasteners. The stop block assembly is provided with a cavity for accommodating the connecting block and a channel for the telescopic shaft and nut of the longitudinal cylinder to extend into. The stop assembly is provided with a limiting wall, which restricts the connecting block within the cavity; The connecting block and the cavity have a circumferential movement gap and a longitudinal movement gap, so that the connecting block can move within the cavity.

2. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 1, characterized in that: The connecting block includes a first column on the upper side and a second column on the lower side; the cavity includes a small inner diameter portion that matches the first column and a large inner diameter portion that matches the second column; The small inner diameter portion and the large inner diameter portion are stepped to form an upper limit wall located on the upper surface of the second column; There is a circumferential clearance between the first column and the inner peripheral wall of the small inner diameter portion, and between the second column and the inner peripheral arm of the large inner diameter portion; there is a longitudinal clearance between the second column and the large inner diameter portion.

3. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 2, characterized in that: The stop assembly includes a first stop and a second stop connected side by side; the first stop and the second stop are respectively fixed to the base plate; The inner surfaces of the first and second blocks are provided with semi-hole grooves, and the two semi-hole grooves enclose each other to form the cavity and the channel.

4. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 3, characterized in that: It also includes a support plate, which is fixed to the mechanism mounting plate and parallel to the base plate; The body of the longitudinal cylinder is fixed above the support plate, and the telescopic shaft of the longitudinal cylinder extends downward through the support plate; A plurality of Z-guide post assemblies are provided between the support plate and the base plate. Each Z-guide post assembly includes a guide sleeve fixed on the support plate and a guide shaft fixed on the base plate. The guide shaft moves within the guide sleeve. The guide shaft has a longitudinal hole above it, and the guide sleeve has an anti-detachment pin that passes through the longitudinal hole and moves within the longitudinal hole.

5. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 1, characterized in that: The telescopic shaft of the transverse cylinder is connected to the accessory mounting plate via a transverse shaft; A bearing seat is provided below the base plate, and the horizontal shaft passes through the shaft hole of the bearing seat; The outer end of the horizontal shaft is provided with a connector, and the connector is provided with a T-shaped groove with an opening facing the horizontal cylinder; The end of the telescopic shaft of the transverse cylinder is connected to a limiting head, which is restricted within the wide diameter portion inside the T-slot. There is a circumferential movement gap and a lateral movement gap between the limiting head and the wide diameter portion.

6. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 1, characterized in that: The inner surface of the wheel side is a vertical surface, and the contact between the inner surface of the wheel side and the side of the track is a line contact. The lower generatrix of the wheel surface of the main wheel is horizontal, and the contact between the wheel surface of the main wheel and the top surface of the track is point contact or line contact.

7. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 1, characterized in that: The accessory mounting plate is equipped with a laser sensor to measure the distance from the emission point to the track surface, and to detect whether the wheel body or wheel side is in contact with the track; the laser sensor is connected to the alarm system.

8. The adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to claim 1, characterized in that: The speed encoder is connected to the shaft of the positioning wheel via a flexible coupling. The actual operating speed of the track-enhanced vehicle can be determined by reading the data from the speed encoder.

9. The positioning method of the adaptive positioning mechanism for a track-enhanced vehicle traveling along a track according to any one of claims 1-8, characterized in that: When the track-enhanced vehicle is not in operation while traveling along the track, the telescopic shaft of the lateral cylinder pulls the accessory mounting plate away from the track, and the wheel side of the positioning wheel moves laterally away from the track. The telescopic shaft of the longitudinal cylinder lifts the base plate upwards, and the lower surface of the main body of the positioning wheel does not contact the top surface of the track; Upon receiving the work instruction, the telescopic shaft of the longitudinal cylinder extends, and the main part of the positioning wheel contacts the top surface of the track; then the telescopic shaft of the transverse cylinder extends, and the side part of the positioning wheel contacts the side of the track, and normal operation begins. After the operation is completed, the telescopic shaft of the transverse cylinder retracts, and the side of the positioning wheel separates from the side of the track first. Then the telescopic shaft of the longitudinal cylinder retracts, and the positioning wheel completely separates from the track.

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