An automatic reset control system for tamping operation mechanism

Abstract

A tamping operation mechanism automatic reset control system comprises a slewing center frame and a longitudinal beam fixedly mounted on a tamping vehicle chassis, wherein a first crossbeam and a second crossbeam are respectively fixedly connected to both ends of the longitudinal beam, and the left and right ends of the first crossbeam and the second crossbeam are respectively connected to a left tamping frame and a right tamping frame which can be laterally extended outward by a lateral displacement driving cylinder 1; the control system also comprises a left outer tamping unit and a left inner tamping unit which can be laterally displaced on the left tamping frame by a lateral displacement driving cylinder 2, and a right outer tamping unit and a right inner tamping unit which can be laterally displaced on the right tamping frame by a lateral displacement driving cylinder 3; a controller which can control the left outer tamping unit, the left inner tamping unit, the right outer tamping unit, the right inner tamping unit, the left tamping frame, the right tamping frame and the longitudinal beam reset according to the wire lengths of a plurality of proximity switches and wire displacement sensors; the control system saves time and avoids the safety risk of personnel intrusion.

Description

Technical Field

[0001] The invention relates to an automatic resetting control system for a railway special operating mechanism, in particular to an automatic resetting control system for a tamping operating mechanism of a tamping vehicle. Background Art

[0002] Railway tamping vehicles are mainly used for comprehensive operations such as track raising, track shifting, leveling, and tamping in railway construction, overhaul, and maintenance. They improve the density of the ballast of the roadbed, increase the stability of the track, eliminate the directional deviation of the track, the left and right horizontal deviations, and the front and rear height deviations, so that the track line meets the requirements of the line design standards and line maintenance rules. The tamping operation mechanism of the tamping vehicle responsible for tamping operations generally consists of a tamping frame, a tamping unit, and a tamping pick. Tamping vehicles such as turnout tamping vehicles have relatively complex operating mechanisms due to their special uses. Their tamping frames can rotate freely at a certain angle, and the number of tamping units is large and can all move laterally independently.

[0003] After the tamping vehicle has completed its operation, in order to avoid overrunning or mechanism detachment during driving, the tamping mechanism needs to be reset and locked. According to investigations, the tamping mechanisms of various types of tamping vehicles in China are reset manually. The operating steps of the manual reset method are as follows: manually or through an angle sensor to determine the current rotation angle of the tamping device → execute the tamping device to rotate clockwise or counterclockwise to zero position → manually confirm that the tamping device has rotated to zero position on the line side → manually execute the retraction of the left and right tamping frames (to prevent interference between the mechanisms at this time, each tamping unit must be extended a certain distance) → manually confirm that the left and right tamping frames are retracted into place on the line side → manually execute the retraction of all tamping units → manually confirm that all tamping units are retracted into place on the line side → lock the tamping frame → end; the traditional manual reset method requires personnel to be dispatched to confirm the reset status of the tamping mechanism on both sides of the tamping vehicle at any time. On some busy lines, this will increase the risk of operators being hit and injured by vehicles on adjacent lines;

[0004] It is not difficult to see from the above process that manually resetting the tamping mechanism has problems such as complicated operation, time-consuming and labor-intensive, and the need for additional personnel to confirm the reset state of the tamping frame on the side of the line, which poses a risk of personnel intrusion. Therefore, it is necessary to design an automatic reset control system for the tamping mechanism of a tamping vehicle. Summary of the invention

[0005] The purpose of the present invention is to solve some problems caused by the fact that the existing tamping vehicle can only reset the tamping operation mechanism by manual operation. To this end, an automatic reset control system for the tamping operation mechanism is developed to save the resetting time of the operation mechanism and avoid the safety risk of personnel intrusion.

[0006] The technical solution of the present invention is:

[0007] A tamping operation mechanism automatic reset control system comprises a slewing center frame fixedly mounted on a tamping vehicle chassis, a longitudinal beam which can be pivoted relative to the center of the slewing center frame around a pivot axis by a rotationally driven oil cylinder, a transverse beam 1 and a transverse beam 2 being respectively fixedly connected to both ends of the longitudinal beam, and a left tamping frame and a right tamping frame which can be extended laterally outward by a transversely displacement driven oil cylinder 1 at the left and right ends of the transverse beam 1 and the transverse beam 2 respectively; and further comprises a left inner tamping unit and a right inner tamping unit adjacent to each other in the transverse direction, and a left outer tamping unit and a right outer tamping unit adjacent to the left inner tamping unit and the right inner tamping unit respectively, the left outer tamping unit and the left inner tamping unit can be laterally displaced independently of each other on the left tamping frame by a transversely displacement driven oil cylinder 2, and the right outer tamping unit and the right inner tamping unit can be laterally displaced independently of each other on the right tamping frame by a transversely displacement driven oil cylinder 3;

[0008] The bottom of the left tamping frame is provided with two proximity switch mounting seats 1 for mounting the left outer tamping unit reset proximity switch and the left inner tamping unit reset proximity switch, and the bottom of the right tamping frame is provided with two proximity switch mounting seats 2 for mounting the right outer tamping unit reset proximity switch and the right inner tamping unit reset proximity switch; the left and right ends of the tamping vehicle underframe are provided with a right tamping frame reset proximity switch mounting seat and a left tamping frame reset proximity switch mounting seat; a sensor mounting seat for mounting a wire displacement sensor is also provided on one end of the tamping vehicle underframe, and a wire fixing seat for fixing the wire end of the wire displacement sensor is provided at one end of the longitudinal beam, and the top of the wire fixing seat is flush with the wire output end of the wire displacement sensor;

[0009] It also includes a controller that can control the left outer tamping unit, the left inner tamping unit, the right outer tamping unit, the right inner tamping unit, the left tamping frame, the right tamping frame and the longitudinal beam to reset into place and stop resetting according to the wire length of the left outer tamping unit reset proximity switch, the left inner tamping unit reset proximity switch, the right outer tamping unit reset proximity switch, the right inner tamping unit reset proximity switch, the left tamping frame reset proximity switch, the right tamping frame reset proximity switch and the wire displacement sensor.

[0010] The left tamping frame includes a U-shaped left slide rail fixedly installed on the left end of the first beam and the second beam, a left transverse guide rail one connected to the two U-shaped left slide rails, and two left transverse guide rails two respectively correspondingly arranged directly below the two left transverse guide rails one; the right tamping frame is fixedly installed on the U-shaped right slide rail on the right end of the first beam and the second beam, a right transverse guide rail one connected to the two U-shaped right slide rails, and two right transverse guide rails two respectively correspondingly arranged directly below the two right transverse guide rails one; the left outer tamping unit and the left inner tamping unit are a U-shaped frame structure, and the two ends of the U-shaped openings of the left outer tamping unit and the left inner tamping unit are respectively sleeved on the two left transverse guide rails two; the right outer tamping unit and the right inner tamping unit are a U-shaped frame structure, and the two ends of the U-shaped openings of the right outer tamping unit and the right inner tamping unit are respectively sleeved on the two right transverse guide rails two.

[0011] The left tamping frame and the right tamping frame are respectively extended laterally outward by two lateral displacement driving cylinders. The fixed ends of the two lateral displacement driving cylinders of the left tamping frame are respectively connected to the two U-shaped left slide rails, and the output ends of the two lateral displacement driving cylinders of the left tamping frame are respectively connected to the two left lateral guide rails. The fixed ends of the two lateral displacement driving cylinders of the right tamping frame are respectively connected to the two U-shaped right slide rails, and the output ends of the two lateral displacement driving cylinders of the right tamping frame are respectively connected to the two right lateral guide rails.

[0012] The wire displacement sensor and the wire fixing seat are located on the same plane.

[0013] A rotary drive oil cylinder is respectively provided at both ends of the longitudinal beam, and the two rotary drive oil cylinders are symmetrically distributed on both sides of the longitudinal beam. The fixed end of the rotary drive oil cylinder is connected to the tamping vehicle frame, and the output end of the rotary drive oil cylinder is hinged to the mounting seat at both ends of the longitudinal beam.

[0014] The left outer tamping unit, the left inner tamping unit, the right outer tamping unit and the right inner tamping unit are equipped with tamping picks for tamping operations. The tamping picks are installed on tamping pick fixing frames, and the tamping pick fixing frames are installed on the tamping unit bodies.

[0015] It also includes a digital input module for receiving signals from the left outer tamping unit reset proximity switch, the left inner tamping unit reset proximity switch, the right outer tamping unit reset proximity switch, the right inner tamping unit reset proximity switch, the left tamping frame reset proximity switch, and the right tamping frame reset proximity switch, and an analog input module for receiving sensor signals from the wire displacement sensor;

[0016] The digital input module is also connected to an automatic rotation reset switch of the tamping frame and a lateral displacement reset switch of the tamping mechanism, which are used to start a reset signal for the controller. The digital input module and the analog input module are connected to the controller. The controller is also connected to a digital output module that can transmit the controller output signal to each rotation drive cylinder, lateral displacement drive cylinder one, lateral displacement drive cylinder two, and lateral displacement drive cylinder three control solenoid valve.

[0017] The controller is a PLC controller.

[0018] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention successfully realizes the automatic resetting function of the tamping operation mechanism, and does not require the operating personnel to observe the resetting state of the tamping operation mechanism at any time on the line, which can effectively avoid the risk of the operating personnel being hit by the vehicle, reduces the operating complexity of the operating personnel and saves the resetting time of the operation mechanism, solves the problem that the personnel need to confirm the resetting state of the tamping operation mechanism on the side of the line and must be close to the adjacent line, and avoids the safety risk of personnel intrusion; the time consumed for the automatic resetting of the tamping operation mechanism of the present invention is about half a minute, while the time consumed for the traditional manual resetting method is about five and a half minutes. If the observer fails to confirm the zero position of the tamping frame, the tamping frame will not be able to be locked. At this time, manual resetting operations need to be repeated, and the time consumed will increase sharply. It can be seen that the present invention can shorten the mechanism retraction time after the operation is completed by at least ten times; the system is particularly suitable for CDC-16X type turnout tamping vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the tamping operation mechanism;

[0020] Figure 2 It is a top view of the tamping operation mechanism;

[0021] Figure 3 This is a schematic diagram of the right tamping frame of the tamping operation mechanism extending out;

[0022] Figure 4 It is a partial structural front view of the present invention;

[0023] Figure 5 This is a partial structure of the present invention. Figure 1 ;

[0024] Figure 6 It is a top view of the partial structure of the present invention Figure 2 ;

[0025] Figure 7 It is a circuit principle block diagram of the automatic control system of the present invention;

[0026] In the figure: 1, rotary center frame; 2, longitudinal beam; 3, cross beam 1; 4, cross beam 2; 5, left tamping frame; 6, right tamping frame; 7, left outer tamping unit; 8, left inner tamping unit; 9, right inner tamping unit; 10, right outer tamping unit; 11, rotary drive cylinder; 12, rotating shaft; 13, lateral displacement drive cylinder 1; 16, tamping pick; 17, tamping pick fixing frame; 18, proximity switch mounting seat 1; 20, proximity switch mounting seat 2; 22, left tamping frame Reset proximity switch mounting seat; 23. Reset proximity switch mounting seat for right tamping frame; 24. Sensor mounting seat; 25. Pull wire fixing seat; 26. Controller; 27. Reset proximity switch for left outer tamping unit; 28. Reset proximity switch for left inner tamping unit; 29. ​​Reset proximity switch for right outer tamping unit; 30. Reset proximity switch for right inner tamping unit; 31. Reset proximity switch for left tamping frame; 32. Reset proximity switch for right tamping frame; 33. Pull wire displacement sensor. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0029] Figure 1 , Figure 2 , Figure 3In the embodiment, the tamping operation mechanism includes an X-shaped slewing center frame 1, a longitudinal beam 2 which can be pivoted around a pivot axis 12 relative to the center of the slewing center frame by two rotating drive cylinders 11, a cross beam 1 3, a cross beam 2 4, two tamping frames, and four tamping units. The slewing center frame 1 is fixedly mounted on the tamping vehicle chassis, the cross beam 1 3 and the cross beam 2 4 are connected to the two ends of the longitudinal beam 2, the two tamping frames are a left tamping frame 5 and a right tamping frame 6, the left tamping frame 5 and the right tamping frame 6 are respectively connected to the left and right ends of the cross beam 1 3 and the cross beam 2 4, the left tamping frame 5 and the right tamping frame 6 can each perform telescopic action under the drive of a lateral displacement drive cylinder 13, and the four tamping units are divided into: They are respectively a left outer tamping unit 7, a left inner tamping unit 8, a right inner tamping unit 9, and a right outer tamping unit 10, wherein the left outer tamping unit 7 and the left inner tamping unit 8 are mounted on a left tamping frame, and the right inner tamping unit 9 and the right outer tamping unit 10 are mounted on a right tamping frame, and the left outer tamping unit 7 and the left inner tamping unit 8 can each be driven by a second lateral displacement driving cylinder to perform a lateral movement, and the right inner tamping unit 9 and the right outer tamping unit 10 can each be driven by a third lateral displacement driving cylinder to perform a lateral movement, and the tamping device has a total of 16 tamping picks, which are respectively mounted on each tamping unit through a tamping pick fixing frame 17 in the form of 4 tamping picks being allocated to one tamping unit;

[0030] Furthermore, two rotary drive cylinders 11 are centrally symmetrically distributed on both sides of the longitudinal beam 2, the fixed ends of the rotary drive cylinders 11 are connected to the tamping vehicle chassis, and the output ends of the rotary drive cylinders 11 are hinged to the mounting seats at both ends of the longitudinal beam 2;

[0031] The left tamping frame 5 includes a U-shaped left slide rail fixedly installed on the left ends of the cross beam 1 3 and the cross beam 2 4, a left transverse guide rail 1 connected to the two U-shaped left slide rails, and two left transverse guide rails 2 respectively correspondingly arranged directly below the two left transverse guide rails 1; the right tamping frame 6 is fixedly installed on the U-shaped right slide rails on the right ends of the cross beam 1 3 and the cross beam 2 4, a right transverse guide rail 1 connected to the two U-shaped right slide rails, and two right transverse guide rails 2 respectively correspondingly arranged directly below the two right transverse guide rails 1; the left outer tamping unit 7 and the left inner tamping unit 8 are a U-shaped frame structure, and the left outer tamping unit 7 and the left inner tamping unit 8 are respectively sleeved at both ends of the U-shaped opening On the two left transverse guide rails 2; the right outer tamping unit 10 and the right inner tamping unit 9 are a U-shaped frame structure, and the two ends of the U-shaped openings of the right outer tamping unit 10 and the right inner tamping unit 9 are respectively sleeved on the two right transverse guide rails 2; the two lateral displacement driving cylinders of the left tamping frame 5 have fixed ends respectively connected to the two U-shaped left slide rails, and the two lateral displacement driving cylinders of the left tamping frame 5 have output ends respectively connected to the two left transverse guide rails 1, and the two lateral displacement driving cylinders of the right tamping frame 6 have fixed ends respectively connected to the two U-shaped right slide rails, and the two lateral displacement driving cylinders of the right tamping frame 6 have output ends respectively connected to the two right transverse guide rails 1.

[0032] Figure 4 , Figure 5 , Figure 6 In the figure, two proximity switch mounting seats 18 for mounting the left outer tamping unit reset proximity switch and the left inner tamping unit reset proximity switch are provided at the bottom of the left tamping frame 5, and two proximity switch mounting seats 20 for mounting the right outer tamping unit reset proximity switch and the right inner tamping unit reset proximity switch are provided at the bottom of the right tamping frame 6; right tamping frame reset proximity switch mounting seats 23 and left tamping frame reset proximity switch mounting seats 22 are provided at the left and right ends of the tamping vehicle frame; a sensor mounting seat 24 for mounting a wire displacement sensor 33 is also provided on one end of the tamping vehicle frame, and a wire fixing seat 25 for fixing the wire end of the wire displacement sensor is provided at one end of the longitudinal beam 2, the top of the wire fixing seat 25 is flush with the wire output end of the wire displacement sensor, the wire displacement sensor and the wire fixing seat 25 are located on the same plane, the rotation angle is determined by the length change of the line selected by the wire displacement sensor 33, and the mathematical model for measuring the angle is converted into a mathematical model for measuring the straight line spacing, thereby achieving angle judgment.

[0033] Figure 7In the embodiment, the automatic reset control system of the tamping operation mechanism includes a controller 26, to which a digital input module (DI module), an analog input module (AI module) and a digital output module (DO module) are connected. The input end of the digital input module (DI module) is connected with a left outer tamping unit reset proximity switch 27, a left inner tamping unit reset proximity switch 28, a right outer tamping unit reset proximity switch 29, a right inner tamping unit reset proximity switch 30, a left tamping frame reset proximity switch 31, and a right tamping frame reset proximity switch 32. The input end of the analog input module (AI module) is connected with a pull-wire displacement sensor 33. The output end of the digital output module (DO module) is connected with two tamping frame rotation offset cylinder drive solenoid valves for controlling the action of two rotation drive cylinders 11, and two left tamping frame 5 lateral displacement drive cylinders for controlling the action of two tamping frame 5. A frame transverse shift cylinder solenoid valve, two right tamping frame transverse shift cylinder solenoid valves respectively used to control the two transverse displacement driving cylinders of the right tamping frame 6, a left outer tamping unit transverse shift cylinder driving solenoid valve used to control the transverse displacement driving cylinder two of the left outer tamping unit, a left inner tamping unit transverse shift cylinder driving solenoid valve used to control the transverse displacement driving cylinder two of the left inner tamping unit, a right outer tamping unit transverse shift cylinder driving solenoid valve used to control the transverse displacement driving cylinder three of the right outer tamping unit, and a right outer tamping unit transverse shift cylinder driving solenoid valve used to control the transverse displacement driving cylinder three of the right outer tamping unit, each solenoid valve is respectively connected to the oil circuit of the corresponding cylinder; the digital input module is also connected to a tamping frame automatic rotation reset switch and a tamping mechanism transverse shift reset switch for starting a reset signal to the controller 26; the controller 26 is a PLC controller.

[0034] The automatic reset control of the tamping operation mechanism detects real-time signals through the proximity quick-close, the automatic rotation reset switch of the tamping frame and the transverse reset switch of the tamping mechanism and sends them to the PLC controller. After judgment by the PLC controller, the signals are sent to the corresponding solenoid valves. The solenoid valves control the oil inlet of the corresponding cylinders and complete the corresponding actions.

[0035] The operation flow of the automatic reset system is: operate the frame rotation switch → PLC determines the current angle of the tamping device → automatically rotate the tamping device to zero position → operate the automatic reset switch → automatically retract the left and right tamping frames and extend each tamping unit → automatically retract each tamping unit → lock the tamping frame → end.

[0036] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic reset control system for a tamping operation mechanism, characterized in that: The invention comprises a slewing center frame (1) fixedly mounted on a tamping vehicle chassis, a longitudinal beam (2) which can be pivoted relative to the center of the slewing center frame about a pivot axis (12) by means of a rotationally driven oil cylinder (11), a first transverse beam (3) and a second transverse beam (4) being fixedly connected to both ends of the longitudinal beam (2), and a left tamping frame (5) and a right tamping frame (6) which can be extended laterally outward by means of a transversely driven oil cylinder (1) respectively at the left and right ends of the first transverse beam (3) and the second transverse beam (4); and also comprises a left inner tamping unit (6) which is adjacent to each other in the transverse direction. 8), a right inner tamping unit (9), and a left outer tamping unit (7) and a right outer tamping unit (10) respectively adjacent to the left inner tamping unit (8) and the right inner tamping unit (9), wherein the left outer tamping unit (7) and the left inner tamping unit (8) can be independently displaced laterally on the left tamping frame (5) by a second lateral displacement driving cylinder, and the right outer tamping unit (10) and the right inner tamping unit (9) can be independently displaced laterally on the right tamping frame (6) by a third lateral displacement driving cylinder; The bottom of the left tamping frame (5) is provided with two proximity switch mounting seats (18) for mounting a left outer tamping unit reset proximity switch and a left inner tamping unit reset proximity switch, and the bottom of the right tamping frame (6) is provided with two proximity switch mounting seats (20) for mounting a right outer tamping unit reset proximity switch and a right inner tamping unit reset proximity switch; the left and right ends of the tamping vehicle chassis are provided with a right tamping frame reset proximity switch mounting seat (23) and a left tamping frame reset proximity switch mounting seat (22); one end of the tamping vehicle chassis is also provided with a sensor mounting seat (24) for mounting a wire displacement sensor, and one end of the longitudinal beam (2) is provided with a wire fixing seat (25) for fixing the wire end of the wire displacement sensor, and the top of the wire fixing seat (25) is flush with the wire output end of the wire displacement sensor; It also includes a controller (26) that can control the left outer tamping unit (7), the left inner tamping unit (8), the right outer tamping unit (10), the right inner tamping unit (9), the left tamping frame (5), the right tamping frame (6) and the longitudinal beam (2) to reset to their positions and stop resetting according to the length of the wire of the left outer tamping unit reset proximity switch (27), the left inner tamping unit reset proximity switch (28), the right outer tamping unit reset proximity switch (29), the right inner tamping unit reset proximity switch (30), the left tamping frame reset proximity switch (31), the right tamping frame reset proximity switch (32) and the wire displacement sensor (33).

2. The automatic reset control system for a tamping operation mechanism according to claim 1, characterized in that: The left tamping frame (5) comprises a U-shaped left slide rail fixedly mounted on the left ends of the first beam (3) and the second beam (4), a left transverse guide rail one connected to the two U-shaped left slide rails, and two left transverse guide rails two respectively arranged directly below the two left transverse guide rails one; the right tamping frame (6) is fixedly mounted on the right ends of the first beam (3) and the second beam (4), a right transverse guide rail one connected to the two U-shaped right slide rails, and two left transverse guide rails two respectively arranged directly below the two left transverse guide rails one. A right transverse guide rail 2 is located directly below the right transverse guide rail 1; the left outer tamping unit (7) and the left inner tamping unit (8) are a U-shaped frame structure, and the two ends of the U-shaped openings of the left outer tamping unit (7) and the left inner tamping unit (8) are respectively sleeved on the two left transverse guide rails 2; the right outer tamping unit (10) and the right inner tamping unit (9) are a U-shaped frame structure, and the two ends of the U-shaped openings of the right outer tamping unit (10) and the right inner tamping unit (9) are respectively sleeved on the two right transverse guide rails 2.

3. The automatic reset control system for a tamping operation mechanism according to claim 2, characterized in that: The left tamping frame (5) and the right tamping frame (6) are respectively extended outward laterally through two lateral displacement drive cylinders. The fixed ends of the two lateral displacement drive cylinders of the left tamping frame (5) are respectively connected to the two U-shaped left slide rails. The output ends of the two lateral displacement drive cylinders of the left tamping frame (5) are respectively connected to the two left lateral displacement guide rails. The fixed ends of the two lateral displacement drive cylinders of the right tamping frame (6) are respectively connected to the two U-shaped right slide rails. The output ends of the two lateral displacement drive cylinders of the right tamping frame (6) are respectively connected to the two right lateral displacement guide rails.

4. The automatic reset control system for a tamping operation mechanism according to claim 1, characterized in that: The wire pulling displacement sensor and the wire pulling fixing seat (25) are located on the same plane.

5. The automatic reset control system for a tamping operation mechanism according to claim 1, characterized in that: A rotary drive oil cylinder (11) is provided at each end of the longitudinal beam (2). The two rotary drive oil cylinders (11) are symmetrically distributed on both sides of the longitudinal beam (2). The fixed ends of the rotary drive oil cylinders (11) are connected to the tamping vehicle underframe, and the output ends of the rotary drive oil cylinders (11) are hinged to mounting seats at the two ends of the longitudinal beam (2).

6. The automatic reset control system for a tamping operation mechanism according to claim 1, characterized in that: The left outer tamping unit (7), the left inner tamping unit (8), the right outer tamping unit (10), and the right inner tamping unit (9) are equipped with a tamping pick (16) for tamping operations. The tamping pick (16) is mounted on a tamping pick fixing frame (17), and the tamping pick fixing frame (17) is mounted on the tamping unit body.

7. The automatic resetting control system for a tamping mechanism according to claim 1, characterized in that: It also includes a digital input module for receiving signals from a left outer tamping unit reset proximity switch (27), a left inner tamping unit reset proximity switch (28), a right outer tamping unit reset proximity switch (29), a right inner tamping unit reset proximity switch (30), a left tamping frame reset proximity switch (31), and a right tamping frame reset proximity switch (32); and an analog input module for receiving sensor signals from a wire displacement sensor (33); The digital input module is also connected to an automatic rotation reset switch of the tamping frame and a lateral displacement reset switch of the tamping mechanism for starting a reset signal to the controller (26). The digital input module and the analog input module are connected to the controller (26). The controller (26) is also connected to a digital output module for transmitting an output signal of the controller (26) to control solenoid valves of each rotation drive cylinder, lateral displacement drive cylinder 1, lateral displacement drive cylinder 2, and lateral displacement drive cylinder 3.

8. The automatic reset control system for a tamping mechanism according to claim 1, characterized in that: The controller (26) is a PLC controller.

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