Railway tunnel formwork lining trolley self-laying track walking and deviation rectification system

Abstract

The present application relates to the field of lining trolley equipment, and specifically discloses a railway tunnel formwork lining trolley self-laying rail walking and deviation rectifying system, which comprises a portal, a walking base, a guide rail, a first cushion block, a second cushion block, a first push plate and a second push plate, the bottom of the portal is provided with supporting feet and lifting legs, the lower end of the supporting feet is provided with retractable foot pads, the foot pads can lift the portal through the first and second cushion blocks and push the guide rail outwards through the walking base at the lower end of the lifting legs, the transverse sliding seat on the walking base can adjust the transverse position of the guide rail, and the first and second push plates can adjust the pointing angle of the guide rail, so that timely adjustment of the angle and the transverse position during self-laying is realized, so as to ensure the shape and position accuracy of the lining surface construction.

Description

Technical Field

[0001] This invention belongs to the field of lining trolley equipment, and specifically relates to a self-tracking and correction system for railway tunnel formwork lining trolleys. Background Technology

[0002] Lining trolleys are a common type of tunnel construction equipment. When they are in operation, they need to be advanced along the tunnel according to the specified reference line. If lateral deviation occurs after pouring, it needs to be corrected in time to avoid affecting the positional accuracy of the lining surface.

[0003] Existing trolley traveling mechanisms are generally divided into two types: track-based and wheeled. Track-based traveling mechanisms require laying tracks on the roadbed according to reference lines in advance before moving the trolley forward. This method has relatively accurate positioning, but the track laying is labor-intensive and inefficient, and it can also easily damage the roadbed. Wheeled traveling mechanisms can achieve self-propelled movement. For example, patent document "CN2025105681727" discloses an integrated tunnel trolley based on the full-section drilling and blasting method, which moves by means of a tracked chassis. Although it can improve construction efficiency by eliminating the need for track laying, it is prone to lateral slippage and displacement during pouring due to uneven lateral thrust on the formwork. Adjustments are required via the tracked chassis, but it is difficult to achieve the original accuracy after adjustment, and the tracks can also cause some damage to the roadbed.

[0004] In addition, a self-laying track walking device for a lining trolley is disclosed in patent document with application number "CN2023212047836". It can extend the track outward and lay it quickly on its own. Although it solves the problem of time-consuming and inefficient traditional track laying process and can maintain straight movement during the movement, the trolley body will inevitably have a slight lateral displacement after grouting operation. During the track self-laying process, the guide rail will inevitably have angular and lateral errors. If the deviation is corrected in time before the next self-laying, the error will accumulate and eventually affect the quality and accuracy of the lining surface.

[0005] The above background information is provided only to aid in understanding the inventive concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0006] The purpose of this invention is to provide a railway tunnel formwork lining trolley self-tracking and correction system, thereby overcoming the shortcomings of existing trolley self-tracking devices that are difficult to correct angular and lateral positional deviations in a timely manner during the self-tracking process, which affects the construction quality and accuracy of the lining surface.

[0007] To achieve the above objectives, the present invention provides a self-laying and correction system for a railway tunnel formwork lining trolley, comprising: a gantry and a guide rail; the gantry is provided with lifting legs, and a traveling seat is installed at the telescopic end of the lifting legs; the guide rail is engaged with the bottom of the traveling seat and can be moved outward from both ends of the traveling seat; a transverse sliding seat is provided at the top of the traveling seat, the transverse sliding seat is connected to the telescopic end of the lifting legs and can move in a direction perpendicular to the guide rail; a support foot is provided at the bottom of the gantry, and a foot pad that can be adjusted downward at one end of the support foot is provided; the foot pad is located above the guide rail; a detachable sleeve is fitted on the foot pad; a first pad or a second pad is provided at the bottom of the sleeve; a first push plate is provided on both sides of the first pad; a second push plate is provided on both sides of the second pad; and a positioning semi-circular hole matching the sleeve is provided on the opposite side of the two second push plates.

[0008] Preferably, in the above technical solution, the bottom of the walking seat is provided with a first wheel set, the number of the first wheel sets is two and they are spaced apart along the guide rail, and the two sides of the walking seat are respectively provided with a second wheel set, the second wheel set is located below the interval area between the two first wheel sets, and the rotation axis of the first wheel set is parallel to the rotation axis of the second wheel set.

[0009] Preferably, in the above technical solution, the top of the guide rail is provided with a protrusion, and a recessed groove is symmetrically opened on both sides of the guide rail. The outer periphery of the first wheel set is provided with a wheel groove, the protrusion can be locked in the wheel groove, and the second wheel set can extend into the groove and move closer to the top of the groove.

[0010] Preferably, in the above technical solution, the transverse slide is connected to the traveling seat via a rotating seat, a rotating shaft is provided in the interval area between the two first wheel sets, the two ends of the rotating shaft pass through both sides of the traveling seat, one end of the rotating seat is rotatably connected to the rotating shaft, and the first wheel set and the second wheel set are located near the end of the traveling seat.

[0011] Preferably, in the above technical solution, a drive motor or counterweight is installed at the other end of the walking seat, the output shaft of the drive motor is connected to one of the first wheel sets through a reducer and a transmission sprocket, and the motor body extends outward from the other end of the walking seat.

[0012] Preferably, in the above technical solution, the top of the rotating seat is provided with a sliding groove, the transverse slide is slidably engaged in the sliding groove, the sliding groove is parallel to the rotation axis of the first wheel set, the side of the rotating seat is provided with a first hydraulic cylinder, the interior of the transverse slide is provided with a connecting shaft, the push rod of the first hydraulic cylinder can extend into the transverse slide and connect with the connecting shaft, so as to drive the transverse slide to slide along the sliding groove.

[0013] Preferably, in the above technical solution, the number of supporting feet and the number of lifting legs are both four. The lifting legs are installed near the four corners of the gantry. The installation positions of the supporting feet and the installation positions of the lifting legs are close to each other. The number of first pads is three, and the number of second pads is one.

[0014] Preferably, in the above technical solution, the bottom of the first pad is equipped with a plurality of detachable first supports, the bottom of the second pad is equipped with a plurality of second supports, the side of the second supports is provided with anchor plates, the anchor plates are provided with anchor holes, and the guide rail can pass through between each of the first supports or between each of the second supports.

[0015] Preferably, in the above technical solution, a second hydraulic cylinder is symmetrically arranged on both sides of the first pad, the push rod of the second hydraulic cylinder is fixedly connected to the first push plate, a guide plane is provided on the opposite side of the two first push plates, and a limiting block protruding outward is provided at both ends of the guide plane.

[0016] Preferably, in the above technical solution, a third hydraulic cylinder is provided on one side of the second pad, one of the second push plates is fixedly connected to the push rod of the third hydraulic cylinder, an adjustment seat is provided on the other side of the second pad, and a stud and a third guide rod are provided on the side of the other second push plate away from the positioning semicircular hole. The stud and the third guide rod can pass through the adjustment seat, and an adjustment nut is provided on the stud. The adjustment nut is located between the adjustment seat and the second push plate.

[0017] Compared with existing technologies, the present invention has the following advantages: 1. The railway tunnel formwork lining trolley self-laying and correction system of the present invention has a support foot and a lifting leg at the bottom of the gantry. The lower end of the support foot is equipped with a retractable foot pad. The foot pad can lift the gantry through the first pad block and the second pad block and push the guide rail outward through the traveling seat at the lower end of the lifting leg. The transverse sliding seat on the traveling seat can adjust the transverse position of the guide rail. The first push plate and the second push plate can adjust the pointing angle of the guide rail. Thus, the angle and transverse position can be adjusted in time during the self-laying process to ensure the shape and position accuracy of the lining surface construction.

[0018] 2. The bottom of the walking seat in this invention is provided with two first wheel sets and two second wheel sets, and a rotating seat is also provided on its top. The first wheel sets and the second wheel sets are arranged in a triangular layout in the horizontal direction and are located near one end of the walking seat. When the lifting outrigger supports the frame, the other end of the walking seat is pressed down by gravity, thereby causing the first wheel sets and the second wheel sets to clamp the guide rail, so that there is greater friction between the first wheel sets and the guide rail. This not only prevents the guide rail from slipping on its own, but also makes the first wheel sets push the rail outward more smoothly and accurately.

[0019] 3. The other end of the walking seat in this invention is equipped with a drive motor and a counterweight, and the body of the drive motor extends outward from the other end of the walking seat, thereby further increasing the counterweight and enabling the first wheel set and the second wheel set to have greater guide rail clamping force.

[0020] 4. The first hydraulic cylinder in this invention can drive the traveling seat and the transverse sliding seat to move laterally relative to each other after the gantry is lifted, thereby adjusting the lateral position of the guide rail. Furthermore, the push rod of the first hydraulic cylinder can extend into the transverse sliding seat, which can save the installation space of the first hydraulic cylinder in width and is more conducive to its operation in narrow tunnels.

[0021] 5. The present invention comprises three first support blocks and one second support block. The two can be assembled arbitrarily according to the actual angular offset. During assembly, the first support block is placed under the foot pad, which is fitted with a sleeve. The second support block is then placed under the sleeve corresponding to the rotation point. First, the second push plate on the adjusting seat is adjusted so that it wraps around one side of the sleeve through the positioning semicircular hole. Then, the third hydraulic cylinder drives another second push plate to wrap around the other side of the sleeve through the positioning semicircular hole, causing the second hydraulic cylinder to drive the first push plate to push the frame and make it rotate. This method is not only simple in structure but also more flexible in assembly. In particular, the structure of the positioning semicircular hole can lock the foot pad at any position, which has the advantages of strong adaptability and convenient adjustment.

[0022] 6. The clamping part of the first push plate in this invention is provided with a guide plane. By contacting the arc surface on the outer side of the sleeve, the first push plate can push the sleeve laterally while allowing the sleeve to slide along the guide plane, so as to prevent the sleeve from being locked during the pushing process. Furthermore, by setting limit blocks at both ends of the guide plane, the movement of the sleeve along the guide plane is limited, preventing the sleeve from getting too close to the edge of the first support and avoiding the first support from overturning.

[0023] 7. The support feet in this invention not only serve to lift the gantry and adjust the guide rail angle and lateral displacement, but also allow the foot pads to move downwards and abut against the protrusions of the guide rail during lining construction, thereby locking the relative movement between the guide rail and the gantry, as well as the telescopic ends of the lifting legs, to prevent the gantry from shifting during lining construction. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the railway tunnel formwork lining trolley self-tracking and correction system of the present invention.

[0025] Figure 2 This is a structural diagram of the gantry.

[0026] Figure 3 This is an end view of the guide rail.

[0027] Figure 4 This is a structural diagram of the traveling seat and the transverse sliding seat.

[0028] Figure 5 This is a structural diagram of the first pad block.

[0029] Figure 6 This is a structural diagram of the second pad block.

[0030] Explanation of key figure labels: 100-Gantry, 101-Crossbeam, 102-Longitudinal beam, 103-Reinforcing beam, 104-Diagonal brace beam, 105-Column, 110-Guide rail, 111-Protruding strip, 112-Slot, 130-Lifting outrigger; 200-Traveling seat, 210-Transverse slide, 220-First wheel set, 230-Second wheel set, 240-Rotating seat, 241-Rotating shaft, 242-Slide groove, 243-First hydraulic cylinder, 250-Drive motor, 251-Reducer, 260-Counterweight; 300 - Support foot, 310 - Foot pad, 320 - Sleeve; 400-First pad block, 410-First push plate, 411-Guide plane, 412-Limit block, 420-First support, 430-Second oil cylinder, 440-First guide rod, 441-First guide sleeve; 500-Second pad, 510-Second push plate, 511-Positioning semi-circular hole, 520-Second support, 521-Anchor plate, 522-Anchor hole, 530-Third cylinder, 540-Adjusting seat, 550-Stud, 551-Adjusting nut, 560-Third guide rod, 561-Third guide sleeve, 570-Second guide rod, 571-Second guide sleeve. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "top surface," "bottom surface," "inner," "outer," "inner side," and "outer side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Where the terms "first," "second," and "third" are used for descriptive purposes and to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0035] like Figures 1 to 4As shown, the railway tunnel formwork lining trolley self-tracking and correction system in this embodiment includes a gantry 100, guide rails 110, lifting outriggers 130, a traveling seat 200, supporting feet 300, a first pad 400, and a second pad 500. The gantry 100 includes: a transverse beam 101, longitudinal beams 102, reinforcing beams 103, diagonal bracing beams 104, and columns 105. Two transverse beams 101 are arranged in parallel, and two longitudinal beams 102 are installed in parallel between the two transverse beams 101, with each end fixedly connected to the side of one transverse beam 101. There are four columns 105, each with one end fixedly connected to both ends of a transverse beam 101. One end extends downwards from the crossbeam 101 and is fitted with a lifting outrigger 130. Two reinforcing beams 103 are parallel to the longitudinal beam 102 and located below it. Both ends of the reinforcing beam 103 are fixedly connected to the side of a column 105. Both ends of the diagonal bracing beam 104 are connected to the side of the column 105 and the side of the reinforcing beam 103, respectively. Four support feet 300 are installed close to the lifting outrigger 130. One end of each support foot 300 is fixedly connected to the bottom of the reinforcing beam 103, with the connection position corresponding to the connection position of the diagonal bracing. The other end of each support foot 300 extends downwards from the reinforcing beam 103 and is fitted with a screw rod. A detachable foot pad 310 is installed at the end, which can be adjusted and moved downwards towards the support leg 300 when the screw is rotated; the traveling seat 200 is connected to the telescopic end of the lifting outrigger 130. Two first wheel sets 220 are installed at the bottom of each traveling seat 200, spaced apart with their rotation axes parallel to each other. A second wheel set 230 is installed on each side of the traveling seat 200, forming an inverted triangular distribution structure below the interval between the two first wheel sets 220. The rotation axes of the first wheel sets 220 and the second wheel sets 230 are parallel. The guide rail 110 is engaged with the two... Between the first wheel set 220 and a second wheel set 230, an outwardly protruding rib 111 is provided on the top of the guide rail 110. A recessed groove 112 is symmetrically provided on both sides of the guide rail 110. The outer periphery of the first wheel set 220 is provided with a wheel groove. The rib 111 is locked in the wheel groove and contacts the first wheel set 220. The second wheel set 230 can extend into the groove 112 and move closer to the top of the groove 112. When the first wheel set 220 rotates, the guide rail 110 can move outward as a whole from both ends of the walking seat 200. The foot pad 310 is located above the guide rail 110. When the foot pad 310 moves downward, it can abut against the top of the rib 111.

[0036] Additionally, the first wheel set 220 and the second wheel set 230 are positioned near one end of the travel seat 200. The lateral slide 210 is connected to the travel seat 200 via a rotating seat 240. A rotating shaft 241 is installed in the interval between the two first wheel sets 220, with both ends of the rotating shaft 241 passing through both sides of the travel seat 200. One end of the rotating seat 240 is rotatably connected to the rotating shaft 241. A drive motor 250 or a counterweight 260 is installed at the other end of the travel seat 200. The output shaft of the drive motor 250 is connected to the first wheel set 220 closest to the other end of the travel seat 200 via a reducer 251 and a transmission sprocket. The body of the 0 extends outward from the other end of the walking seat 200; a groove 242 is provided on the top of the rotating seat 240, and the two sides of the bottom steel plate of the transverse slide 210 protrude outward and are slidably inserted into the groove 242. The groove 242 is parallel to the rotation axis of the first wheel set 220. A first hydraulic cylinder 243 is installed on the side of the rotating seat 240. A connecting shaft is installed inside the transverse slide 210. The push rod of the first hydraulic cylinder 243 can extend into the transverse slide 210 and connect with the connecting shaft so as to drive the transverse slide 210 to slide along the groove 242. The top of the transverse slide 210 is fixedly connected to the telescopic end of the lifting support leg 130.

[0037] There are three first pads 400 and one second pad 500. The first pads 400 and the second pads 500 are placed on the bottom of the support foot 300. A sleeve 320 is fitted on the support foot 300. The bottom of the sleeve 320 abuts against the top surface of the first pad 400 or the second pad 500. Two detachable first supports 420 are installed on the bottom of the first pad 400. A guide rail 110 can pass between the two first supports 420. Two second supports 520 are installed on the bottom of the second pad 500. An anchor plate 521 is provided on the side of the second support 520. An anchor hole 522 is opened on the anchor plate 521. The guide rail 110 can pass between the two second supports 520.

[0038] More in detail, such as Figure 5 As shown, a second hydraulic cylinder 430 is installed on each side of the first pad 400. A first guide sleeve 441 is installed on each side of the second hydraulic cylinder 430. A slidable first guide rod 440 is fitted inside the first guide sleeve 441. The push rod end of the second hydraulic cylinder 430 and the ends of the two first guide rods 440 are simultaneously fixedly connected to the first push plate 410. A guide plane 411 is provided on the opposite side of the two first push plates 410. A limiting block 412 protruding outward is provided at each end of the guide plane 411.

[0039] More in detail, such as Figure 6As shown, a third hydraulic cylinder 530 is installed on one side of the second pad 500. A second guide sleeve 571 is installed on each side of the third hydraulic cylinder 530. A slidable second guide rod 570 is fitted inside the second guide sleeve 571. The push rod end of the third hydraulic cylinder 530 and the ends of the two second guide rods 570 are simultaneously fixedly connected to one side of a second push plate 510. A positioning semi-circular hole 511 matching the outer contour of the sleeve 320 is opened on the other side of the second push plate 510. An adjusting seat 540 is installed on the other side of the second pad 500. Two third guide sleeves 56 are provided on the adjusting seat 540. 1. A slidable third guide rod 560 is fitted inside the third guide sleeve 561. A through-pin hole is also opened on the side of the adjusting seat 540. One end of the third guide rod 560 facing the third oil cylinder 530 is fixedly connected to one side of another second push plate 510. A positioning semi-circular hole 511 matching the outer contour of the sleeve 320 is opened on the other side of the second push plate 510. Two studs 550 are installed on one side of the second push plate 510. The studs 550 can pass through the through-pin hole and are fitted with adjusting nuts 551. The adjusting nuts 551 are located between the adjusting seat 540 and the second push plate 510.

[0040] Next, the working principle of the railway tunnel formwork lining trolley self-tracking and correction system in this embodiment will be described in detail to enable those skilled in the art to better understand the present invention: When self-laying the track is required, first extend the telescopic ends of the lifting outriggers 130 outward to raise the gantry 100 as a whole. Then, fit sleeves 320 onto the foot pads 310 of the four support legs 300. Next, place two first pads 400 under the two foot pads 310 at the forward end of the trolley. Place one first pad 400 and one second pad 500 under the other two foot pads 310. Extend the second push plate 510 on the adjusting seat 540 of the second pad 500 outward. Adjust the position of the second pad 500 so that the positioning semi-circular hole 511 on the second push plate 510 aligns with one side of the sleeve 320. Tighten the adjusting nut 551 to align with the adjusting seat 540. The side of 40 abuts to lock the position of the second push plate 510, and then the push rod of the third cylinder 530 extends outward so that the positioning semi-circular hole 511 on the corresponding second push plate 510 fits with the other side of the sleeve 320, so that the two second push plates 510 surround and position the outer side of the sleeve 320. After positioning, the telescopic ends of the four lifting legs 130 are retracted, thereby lowering the entire gantry 100, so that the foot pad 310 presses on the first pad 400 and the second pad 500 through the sleeve 320. If necessary, a bottom hole can be drilled on the roadbed surface below the anchor hole 522 of the second support 520, and then the anchor nail is inserted into the bottom hole through the anchor hole 522 to reinforce the second support 520.

[0041] Then, the drive motor 250 is turned on. The drive motor 250 drives the first wheel set 220 to rotate through the reducer 251 and the transmission sprocket. When the first wheel set 220 rotates, it can drive the guide rail 110 to extend in the direction of travel. Two laser projectors are installed at intervals on the side of the extended end of the guide rail 110 to project two laser projection points onto the baseline of the roadbed. The angular deviation between the line connecting the two laser projection points and the baseline is observed. If the trolley as a whole shifts to the left in the direction of travel, the second hydraulic cylinder 43 located on the left side of the two first pads 400 at the forward end is activated. The push rod of 0 extends outward, so that the guide plane 411 of the first push plate 410 abuts against the left side of the sleeve 320, pushing the sleeve 320 to the right in the forward direction until the aforementioned angular deviation is eliminated; after the angular deviation is eliminated, the second cylinder 430 on the left is locked first, and then the second cylinder 430 on the right is opened, so that the guide plane 411 of the first push plate 410 on the right abuts against the right side of the sleeve 320; then the lateral position of the transverse slide block 210 is adjusted by adjusting the extension of the push rod of the first cylinder 243 so that the center line of the guide rail 110 is roughly aligned with the baseline.

[0042] Then extend the telescopic ends of the four lifting outriggers 130 again, so that the bottom of the guide rail 110 contacts the roadbed surface, raise the gantry 100 again, then remove all the first pads 400 and the second pads 500, and then adjust the foot pads 310 so that they extend downwards and abut against the protrusions 111 on the top of the guide rail 110.

[0043] In summary, the railway tunnel formwork lining trolley self-laying and correction system in this embodiment has a support foot 300 and a lifting leg 130 at the bottom of the gantry 100. The lower end of the support foot 300 is provided with a retractable foot pad 310. The foot pad 310 can lift the gantry 100 through the first pad 400 and the second pad 500, and push the guide rail 110 outward through the traveling seat 200 at the lower end of the lifting leg 130. The transverse sliding seat 210 on the traveling seat 200 can adjust the transverse position of the guide rail 110, and the first push plate 410 and the second push plate 510 can adjust the pointing angle of the guide rail 110. Thus, the angle and transverse position can be adjusted in time during the self-laying process to ensure the shape and position accuracy of the lining surface construction.

[0044] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. A self-tracking and correction system for railway tunnel formwork lining trolleys, comprising: A gantry and guide rail, wherein the gantry is equipped with lifting outriggers, and the telescopic end of the lifting outriggers is fitted with a traveling seat, characterized in that: The guide rail engages with the bottom of the traveling seat and can be moved outward from both ends of the traveling seat. The top of the traveling seat is provided with a transverse slide, which is connected to the telescopic end of the lifting outrigger and can move in a direction perpendicular to the guide rail. The bottom of the gantry is provided with a support foot, one end of which is provided with a foot pad that can be adjusted downward. The foot pad is located above the guide rail. A detachable sleeve is fitted on the foot pad. The bottom of the sleeve is provided with a first pad or a second pad. The first pad is provided with a first push plate on both sides, and the second pad is provided with a second push plate on both sides. The two second push plates are provided with a positioning semi-circular hole that matches the sleeve on the opposite side.

2. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 1, characterized in that, The bottom of the walking seat is provided with a first wheel set, there are two first wheel sets and they are spaced apart along the guide rail. The two sides of the walking seat are respectively provided with a second wheel set. The second wheel set is located below the interval area between the two first wheel sets. The rotation axis of the first wheel set is parallel to the rotation axis of the second wheel set.

3. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 2, characterized in that, The top of the guide rail is provided with a protruding strip, and a recessed groove is symmetrically opened on both sides of the guide rail. The outer periphery of the first wheel set is provided with a wheel groove, and the protruding strip can be locked in the wheel groove. The second wheel set can extend into the groove and move closer to the top of the groove.

4. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 3, characterized in that, The lateral sliding seat is connected to the traveling seat via a rotating seat. A rotating shaft is provided in the interval area between the two first wheel sets. The two ends of the rotating shaft pass through both sides of the traveling seat. One end of the rotating seat is rotatably connected to the rotating shaft. The first wheel set and the second wheel set are located at the ends of the traveling seat.

5. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 4, characterized in that, The other end of the walking seat is equipped with a drive motor or a counterweight. The output shaft of the drive motor is connected to one of the first wheel sets through a reducer and a transmission sprocket. The motor body extends outward from the other end of the walking seat.

6. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 4, characterized in that, The top of the rotating seat is provided with a sliding groove, and the transverse slide is slidably engaged in the sliding groove. The sliding groove is parallel to the rotation axis of the first wheel set. The side of the rotating seat is provided with a first hydraulic cylinder, and the interior of the transverse slide is provided with a connecting shaft. The push rod of the first hydraulic cylinder can extend into the transverse slide and connect with the connecting shaft so as to drive the transverse slide to slide along the sliding groove.

7. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 1, characterized in that, The number of supporting feet and the number of lifting outriggers are both four. The lifting outriggers are installed near the four corners of the gantry. The installation positions of the supporting feet and the installation positions of the lifting outriggers are close to each other. The number of first pads is three and the number of second pads is one.

8. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 1, characterized in that, The bottom of the first pad is equipped with several detachable first supports, and the bottom of the second pad is equipped with several second supports. The side of the second supports is provided with anchor plates, and the anchor plates are provided with anchor holes. The guide rail can pass through the gaps between the first supports or between the second supports.

9. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 1, characterized in that, A second hydraulic cylinder is symmetrically arranged on both sides of the first pad. The push rod of the second hydraulic cylinder is fixedly connected to the first push plate. A guide plane is provided on the opposite side of the two first push plates. A limiting block protruding outward is provided at both ends of the guide plane.

10. The railway tunnel formwork lining trolley self-tracking and correction system according to claim 1, characterized in that, A third hydraulic cylinder is provided on one side of the second pad, and one of the second push plates is fixedly connected to the push rod of the third hydraulic cylinder. An adjustment seat is provided on the other side of the second pad, and a stud and a third guide rod are provided on the side of the other second push plate away from the positioning semicircular hole. The stud and the third guide rod can pass through the adjustment seat. An adjustment nut is provided on the stud, and the adjustment nut is located between the adjustment seat and the second push plate.

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