Gantry structure for transition of lining trolley

Abstract

The utility model discloses a portal frame structure for lining trolley transition, which comprises a portal frame and a walking system, the portal frame comprises a plurality of cross beams arranged in parallel, the cross beams adopt telescopic structures, the two ends of the cross beams are respectively connected with upper longitudinal beams through bolts, the two ends of the cross beams are fixedly connected with upright posts downwards, and the bottom ends of the upright posts are connected with lower longitudinal beams through bolts. The lower portions of the two ends of the lower longitudinal beam are connected with a walking system through supporting legs, and the walking system can rotate by 90 degrees to enable the trolley to walk longitudinally or transversely. When the trolley needs to be transferred, the portal frame can be quickly widened, a reliable supporting system is provided for an externally-expanded formwork and the stability and the bearing capacity of the trolley are ensured through the supporting legs, outward rotation and transverse walking and cooperation with the telescopic cross beam of the portal frame, the mode is convenient and quick, the safety performance is high, the situation that the portal frame is reassembled and disassembled is avoided, procedures are increased, and the production efficiency is improved. And the construction risk is improved, and the construction efficiency is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the lining trolley technical field, and specifically relates to a portal structure for lining trolley transfer. BACKGROUND

[0002] At present, an emergency parking zone is designed in a long tunnel, and one long tunnel often has more than one emergency parking zone. The traditional lining construction method of the emergency parking zone is to install a comb-shaped arch after the main tunnel lining is completed, then to lay a small steel formwork on the comb-shaped arch to line, or to replace the arch formwork of the main tunnel trolley to line, or to erect a scaffold to process a word steel arch and a small steel formwork to line. The three methods all have the problems of long lining period, high construction risk and difficult transfer.

[0003] To solve the technical problem, the applicant develops a telescopic widening section trolley. When the lining construction of the emergency parking zone is encountered, the formwork is directly expanded outward, the trolley is transferred autonomously, and the lining construction requirement is met. However, only the formwork is expanded outward, and the traditional portal and walking system are used for support, which affects the balanced stress of the trolley, and leads to poor overall stability and carrying capacity of the trolley. Reassembling the portal not only increases the process, but also increases the construction risk and reduces the construction efficiency. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a portal structure for lining trolley transfer, which cooperates with the telescopic cross beam of the portal, can quickly widen the portal, provides a reliable support system for the outwardly expanded formwork, and ensures the stability and carrying capacity of the trolley.

[0005] The utility model adopts the technical scheme that the portal structure for lining trolley transfer includes a portal and a walking system. The portal includes a plurality of parallel arranged cross beams. The cross beam adopts a telescopic structure. The two ends of the cross beam are bolted to upper longitudinal beams. The two ends of the cross beam are fixedly connected to vertical columns downward. The bottom end of the vertical column is bolted to a lower longitudinal beam. The lower longitudinal beam is connected to the walking system through a support leg downward. The walking system can be rotated by 90 degrees to make the trolley walk longitudinally or transversely.

[0006] Preferably, the vertical column includes side vertical columns at the front and rear ends of the trolley and a middle vertical column at the middle. A notch is longitudinally arranged at the connection position of the lower longitudinal beam and the side vertical column. The lower part of the side vertical column is provided with a cavity. The upper part of the support leg penetrates the lower longitudinal beam through the notch and then extends into the cavity of the side vertical column. The top end of the support leg is bolted to the telescopic rod of a vertical oil cylinder. The oil cylinder base of the vertical oil cylinder is bolted to the top plate of the cavity. The bottom end of the lower longitudinal beam on one side of the support leg is bolted to a horse stool jack. The bottom end of the horse stool jack is bolted to a pad. When the vertical oil cylinder is contracted, the pad extends out of the bottom end of the walking wheel. When the vertical oil cylinder is elongated, the bottom end of the walking wheel extends out of the pad.

[0007] Preferably, a positioning key is horizontally provided in the middle of the slot of the lower longitudinal beam, and two vertical guide slots are opened on the side wall of the support leg to match the positioning key. The positioning key passes through the guide slots and is connected to the lower longitudinal beam at both ends of the support leg by screws.

[0008] Preferably, the above-mentioned walking system includes a walking wheel, a walking wheel frame, and a drive mechanism. The walking wheel is installed in the walking wheel frame through a drive shaft. The top of the walking wheel frame is bolted to the outrigger. The drive mechanism is connected to the drive shaft to drive the walking wheel to move.

[0009] Preferably, the drive mechanism includes a drive motor, a drive sprocket, a driven sprocket, and a transmission chain. The drive motor is fixedly mounted on the outside of the walking wheel frame. The output shaft of the drive motor is fixedly connected to the drive sprocket. The drive sprocket is connected to the driven sprocket through the transmission chain. The driven sprocket is fixedly mounted on the transmission shaft on one side of the walking wheel.

[0010] Preferably, a horizontal moving seat is provided between the outrigger and the walking system. The top surface of the horizontal moving seat near the outer end has a sliding groove and a sliding cavity. The bottom end of the outrigger has a round tube, which is located in the sliding cavity and coaxial with the horizontal moving seat. The outrigger is slidably connected to the horizontal moving seat through the sliding groove. The inner end of the horizontal moving seat extends into the trolley and the top end is connected to the outrigger through connecting ears. A horizontal sliding sleeve is fitted inside the round tube and its two ends are fixedly connected to the horizontal moving seat. The bottom end of the outer end of the horizontal moving seat is bolted to the top of the walking system. By extending and retracting the horizontal pushing cylinder, the horizontal moving seat and the outrigger move relative to each other, thereby adjusting the position of the walking system.

[0011] Preferably, the aforementioned crossbeam is a telescopic sleeve structure, including an outer sleeve and an inner sleeve. The outer sleeve is a hollow pipe with an opening at one end. The closed end of the outer sleeve is bolted to the upper longitudinal beam. An inner and outer sleeve connector is provided on the outer wall of the outer sleeve near the opening. The inner sleeve is movably fitted inside the outer sleeve, with one end extending from the opening and bolted to the upper longitudinal beam at the other end. A width adjusting cylinder is hinged between the inner wall of the outer sleeve and the outer wall of the inner sleeve. The width adjusting cylinder extends, causing the inner sleeve to move outward. The inner and outer sleeve connector is used to fasten the outer sleeve and the inner sleeve.

[0012] Compared to existing technologies, the advantages of this invention are that when the trolley needs to be moved, it can quickly widen the gantry by using outriggers to rotate laterally outwards, in conjunction with the telescopic crossbeams of the gantry. This provides a reliable support system for the expanded formwork, ensuring the stability and load-bearing capacity of the trolley. This method is convenient, quick, and safe, avoiding the problems of adding steps, increasing construction risks, and reducing construction efficiency associated with reloading and unloading the gantry. Specifically, the outriggers are connected to the side columns via vertical cylinders, enabling vertical movement and horizontal rotation of the outriggers, thus quickly changing the spacing of the walking system. The entire process is lightweight, fast, and saves steps, reducing safety risks for construction personnel. Attached Figure Description

[0013] Figure 1 Axonometric schematic diagram of the lining trolley gantry assembly;

[0014] Figure 2 This is a schematic diagram of the gantry structure;

[0015] Figure 3 A front view schematic diagram of the telescopic sleeve beam structure;

[0016] Figure 4 This is an isometric schematic diagram of the walking system;

[0017] Figure 5 This is a schematic diagram of the walking system.

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure connecting the horizontal moving base and the outriggers.

[0019] Figure 7 A schematic diagram of the lateral cross-sectional structure of the connection between the walking system and the outriggers;

[0020] Figure 8 Axonometric schematic diagram of the lining trolley assembly;

[0021] Figure 9 A front view schematic diagram of the lining trolley formwork assembly;

[0022] Figure 10 A front view schematic diagram of the telescopic sleeve beam structure;

[0023] Figure 11 This is a diagram showing the state of the template inside the main opening;

[0024] Figure 12 This refers to the state of the template moving, rotating, and retracting within the main tunnel. Figure 1 ;

[0025] Figure 13 This refers to the state of the template moving, rotating, and retracting within the main tunnel. Figure 2 . Detailed Implementation

[0026] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0027] Example 1

[0028] like Figures 1-6As shown, a gantry structure is used for the transfer of the lining trolley. The lining trolley includes a template 1, a gantry 2, a traveling system 3, a hydraulic system 4, and a support system 5. The gantry 2 includes a lower longitudinal beam 21, an upper longitudinal beam 22, a crossbeam 23, side columns 24, a middle column 25, a small column 26, a small longitudinal beam 27, a connecting longitudinal beam 28, and support legs 29. Multiple crossbeams 23 are arranged in parallel. The crossbeams 23 adopt a telescopic structure. The two ends of the crossbeams 23 are bolted to the upper longitudinal beams 22, and the two ends of the crossbeams 23 are fixedly connected to the columns downwards. The uprights include side uprights 24 located at the front and rear ends of the trolley and a central upright 25 located in the middle of the trolley. The bottom ends of the side uprights 24 and the central upright 25 are bolted to the lower longitudinal beam 21. The lower longitudinal beam 21 has a traveling system 3 located below both ends. The traveling system 3 can rotate 90 degrees to allow the trolley to travel longitudinally or laterally. When the trolley needs to be moved, it can travel laterally through the traveling system 3. In conjunction with the telescopic crossbeam 23 of the gantry 2, the gantry 2 can be widened quickly, providing a reliable support system for the outward expansion of the formwork and ensuring the stability and load-bearing capacity of the trolley.

[0029] Furthermore, the aforementioned columns include side columns 24 located at the front and rear ends of the trolley and a central column 25 located in the middle. A longitudinal slot 211 is longitudinally formed at the connection between the lower longitudinal beam 21 and the side columns 24. A cavity 241 is provided at the lower part of the side columns 24. The upper part of the support leg 29 passes through the slot 211, penetrates the lower longitudinal beam 21, and extends into the cavity 241 of the side columns 24. The top of the support leg 29 is bolted to the telescopic rod of the vertical cylinder 44. The cylinder seat of the vertical cylinder 44 is bolted to the top plate of the cavity 241. The bottom of the support leg 29 is bolted to the walking system 3. The cylinder seat and telescopic rod of the vertical hydraulic cylinder 44 can extend, retract, and rotate relative to each other. A positioning key 212 is horizontally positioned in the middle of the slot 211 of the lower longitudinal beam 21. Two vertical guide grooves 291 are formed on the side wall of the support leg 29 to match the positioning key 212. The positioning key 212 passes through the guide grooves 291 and is connected to the lower longitudinal beam 21 at both ends via screws. When the traveling wheel is in forward movement, the positioning key is installed to limit the movement of the support leg 29. Operating the vertical hydraulic cylinder 44 allows the support leg 29 to move up and down while maintaining horizontal stability. A trestle jack 54 is bolted to the bottom of the lower longitudinal beam 21 on one side of the support leg 29. A pad 55 is bolted to the bottom of the trestle jack 54. When the vertical hydraulic cylinder 44 retracts, the pad 54 extends from the bottom of the traveling wheel 31 to support the weight of the trolley. When the vertical hydraulic cylinder 44 extends, the bottom of the traveling wheel 31 extends from the pad 54 to support the movement of the trolley. To enable the walking system to move longitudinally and laterally, the outriggers are designed to be rotatable. By rotating the vertical cylinder, the outriggers 29 drive the walking system to rotate 90°. When widening is required, the vertical cylinder 44 retracts, the jack 54 extends, and the pad block 55 supports the trolley. The walking wheels 31 move upward and are suspended in the air. By rotating the vertical cylinder 44, the outriggers 29 rotate, and the walking wheels 31 rotate outward by 90°, achieving the purpose of widening. The mechanical operation state can be changed conveniently and quickly, saving manpower.

[0030] The aforementioned walking system 3 includes a walking wheel 31, a walking wheel frame 32, and a drive mechanism 33. To facilitate walking and simplify the track laying process, the walking wheel 31 is a solid rubber wheel. The drive mechanism 33 includes a drive motor 331, a drive sprocket 332, and a driven sprocket 333. The walking wheel 31 is installed inside the walking wheel frame 32 via a transmission shaft 34. The top of the walking wheel frame 32 is bolted to the support leg 29. The drive mechanism 33 connects to the transmission shaft 34 to drive the walking wheel 31 to move. Specifically, the drive motor 331 is fixedly installed on the outside of the walking wheel frame 32. The output shaft of the drive motor 331 is fixedly connected to the drive sprocket 332. The drive sprocket 332 is connected to the driven sprocket 333 via a transmission chain. The driven sprocket 33 is fixedly installed on the transmission shaft 34 on one side of the walking wheel 31. The drive motor 331 drives the driven sprocket 333 to rotate through the drive sprocket 332, thereby causing the transmission shaft 34 to rotate and the walking wheel 31 to rotate and move.

[0031] To improve the stability of the trolley during construction, when the trolley is stationary and ready for lining, multiple anchor jacks 51 are hinged at intervals on the inner side of the bottom end of the lower longitudinal beam 21. The bottom ends of the anchor jacks 51 are inclined downwards and fixed against the support surface. Multiple side formwork anchor jacks 52 are hinged at intervals on the bottom ends of side formwork 13 and side formwork 24. The bottom ends of the side formwork anchor jacks 52 are inclined downwards and fixed against the support surface. A side formwork jack 53 is provided on one side of the side formwork telescopic cylinder 42. One end of the side formwork jack 53 is hinged to side formwork 13 or side formwork 24, and the other end is hinged to the lower longitudinal beam 21.

[0032] A horizontal moving seat 6 is also provided between the outrigger 29 and the walking system 3. The top surface of the horizontal moving seat 6 near the outer end has a sliding groove 61 and a sliding cavity 62 inside. The bottom end of the outrigger 29 has a round tube 292, which is located in the sliding cavity 62 and is coaxial with the horizontal moving seat 6. The outrigger 29 is slidably connected to the horizontal moving seat 6 through the sliding groove 61. The inner end of the horizontal moving seat 6 extends into the trolley, and the top end is connected to the outrigger 29 through connecting ears. A horizontal pushing cylinder 45 is installed. A horizontal sliding sleeve 63 is sleeved in the round tube 292 and its two ends are fixedly connected to the horizontal moving seat 6. The bottom end of the outer end of the horizontal moving seat 6 is bolted to the top of the walking wheel frame 32. When only a small range of adjustment of the walking width or the walking centerline is needed, the horizontal pushing cylinder 45 is extended and retracted to make the horizontal moving seat 6 and the outrigger 29 move relative to each other, thereby adjusting the position of the walking wheel 31 of the walking system 3. The relative distance of the walking system is changed in this way, making the operation more convenient and practical.

[0033] To widen the lining trolley, the crossbeam 23 is a telescopic sleeve structure, including an outer sleeve 231 and an inner sleeve 232. The outer sleeve 231 is a hollow pipe with an opening at one end. The closed end of the outer sleeve 231 is bolted to the upper longitudinal beam 22. An inner and outer sleeve connector 233 is provided on the outer wall of the outer sleeve 231 near the opening. The inner sleeve 232 is movably sleeved inside the outer sleeve 231, with one end extending from the opening and bolted to the other end of the upper longitudinal beam 22. A width adjustment cylinder 43 is hinged between the inner wall of the outer sleeve 231 and the outer wall of the inner sleeve 232. The width adjustment cylinder 43 extends to drive the inner sleeve 232 to move outward. The inner and outer sleeve connector 233 is used to fasten the outer sleeve 231 and the inner sleeve 232.

[0034] In the lining or traveling state of the trolley, the outer sleeve 231 and inner sleeve 232 of the crossbeam 23 are bolted together as a whole using the inner and outer sleeve connector 233, and used as a complete crossbeam. When the trolley changes from traveling in the main tunnel to lining in the emergency stopping lane, the inner and outer sleeve connectors 233 of each crossbeam 23 are removed, the traveling wheel on the widened side is rotated 90 degrees, and the width adjustment cylinder 43 and the traveling wheel 31 on the widened side are operated at the same time to make the gantry 2 structure on the widened side move towards the side with increased width until the width of the gantry 2 reaches the lining setting position and stops. Then the outer sleeve 231 and inner sleeve 232 of the crossbeam 23 are bolted together as a whole using the inner and outer sleeve connector 233. With the inner sleeve 232 and the outer sleeve 231 in a movable sleeve state, the crossbeam 23 is lengthened by extending the operating width adjustment cylinder to adapt to the changes in the expansion of the upper template and the widening of the spacing of the lower walking system 3, thus meeting the requirements for overall stable support of the trolley. The method of lengthening the crossbeam 23 is simple and convenient, effectively saving multiple loading and unloading procedures and reducing construction risks.

[0035] Example 2

[0036] Please see Figures 1-9 The gantry structure used for the transfer of lining trolleys, and for lining trolleys in tunnel emergency stopping zones, includes a template 1, a gantry 2, a walking system 3, a hydraulic system 4, and a support system 5. The hydraulic system 4 includes an arch formwork rotating cylinder 41, a side formwork telescopic cylinder 42, a width adjusting cylinder 43, a vertical cylinder 44, and a horizontal pushing cylinder 45. The support system 5 includes a foundation jack 51, a side formwork foundation jack 52, a side formwork jack 53, and a trestle jack 54.

[0037] The gantry 2 includes a lower longitudinal beam 21, an upper longitudinal beam 22, a crossbeam 23, side columns 24, a middle column 25, a small column 26, a small longitudinal beam 27, a connecting longitudinal beam 28, and support legs 29. Multiple crossbeams 23 are arranged in parallel. The crossbeams 23 adopt a telescopic structure. The upper longitudinal beam 22 is bolted to both ends of each crossbeam 23. The columns are fixed downwards at both ends of the crossbeams 23. The columns include side columns 24 located at the front and rear ends of the trolley and a middle column 25 located in the middle of the trolley. The bottom ends of both side columns 24 and middle column 25 are bolted to the lower longitudinal beam 21. A traveling system 3 is located below both ends of the lower longitudinal beam 21. The traveling system 3 can rotate 90 degrees to allow the trolley to travel longitudinally or laterally. The template 1 includes an arch mold 11, an arch mold 2 12, a side mold 13, and a side mold 2 14 with an arc-shaped structure. The upper ends of the arch mold 11 and the arch mold 2 12 are bolted together, and the lower ends are respectively hinged to the top surface of the upper longitudinal beam 22. The upper ends of the side mold 13 and the side mold 2 14 are respectively hinged to the lower ends of the arch mold 11 and the arch mold 2 12. The lower parts of the side mold 13 and the side mold 2 14 are located outside the walking system 3 and are horizontally hinged to the side mold telescopic cylinder 42 between them and the lower longitudinal beam 21. The middle parts of the arch mold 11 and the arch mold 2 12 are respectively hinged to one end of the arch mold rotating cylinder 41, and the other end of the arch mold rotating cylinder 41 is hinged to the crossbeam 23 of the gantry 2. A combined template and telescopic crossbeam 23 are used. Arch formwork 11 and arch formwork 22 are hinged to arch formwork rotating cylinder 41, which is hinged to the crossbeam 23. After loosening the connection between arch formwork 11 and arch formwork 22, the arch formwork rotating cylinder 41 and the crossbeam 23 are extended by operating the arch formwork rotating cylinder 41. A sealing connecting plate is installed between arch formwork 11 and arch formwork 22 to achieve the outward expansion of the arch formwork to meet the lining requirements of the emergency parking lane. This is convenient and quick, and eliminates the need to use the main tunnel trolley to install a comb-shaped arch frame and then lay small steel molds on the comb-shaped arch frame for lining, or replace the arch formwork of the main tunnel trolley for lining, or set up scaffolding to process steel arch frames and small steel molds for lining, thus improving the safety factor.

[0038] To widen the lining trolley, the crossbeam 23 is a telescopic sleeve structure, including an outer sleeve 231 and an inner sleeve 232. The outer sleeve 231 is a hollow pipe with an opening at one end. The closed end of the outer sleeve 231 is bolted to the upper longitudinal beam 22. An inner and outer sleeve connector 233 is provided on the outer wall of the outer sleeve 231 near the opening. The inner sleeve 232 is movably sleeved inside the outer sleeve 231, with one end extending from the opening and bolted to the other end of the upper longitudinal beam 22. A width adjustment cylinder 43 is hinged between the inner wall of the outer sleeve 231 and the outer wall of the inner sleeve 232. The width adjustment cylinder 43 extends to drive the inner sleeve 232 to move outward. The inner and outer sleeve connector 233 is used to fasten the outer sleeve 231 and the inner sleeve 232.

[0039] In the lining or traveling state of the trolley, the outer sleeve 231 and inner sleeve 232 of the crossbeam 23 are bolted together as a whole using the inner and outer sleeve connector 233, and used as a complete crossbeam. When the trolley changes from traveling in the main tunnel to lining in the emergency stopping lane, the inner and outer sleeve connectors 233 of each crossbeam 23 are removed, the traveling wheel on the widened side is rotated 90 degrees, and the width adjustment cylinder 43 and the traveling wheel 31 on the widened side are operated at the same time to make the gantry 2 structure on the widened side move towards the side with increased width until the width of the gantry 2 reaches the lining setting position and stops. Then the outer sleeve 231 and inner sleeve 232 of the crossbeam 23 are bolted together as a whole using the inner and outer sleeve connector 233. With the inner sleeve 232 and the outer sleeve 231 in a movable sleeve state, the crossbeam 23 is lengthened by extending the operating width adjustment cylinder to adapt to the changes in the expansion of the upper template and the widening of the spacing of the lower walking system 3, thus meeting the requirements for overall stable support of the trolley. The method of lengthening the crossbeam 23 is simple and convenient, effectively saving multiple loading and unloading procedures and reducing construction risks.

[0040] To enhance the supporting capacity and structural stability of the arch formwork, connecting seats 111 and 121 are welded to the middle parts of the arch formwork 11 and 121 respectively. Connecting seats 111 and 121 are bolted to the top of the small column 26. The bottom of the small column 26 is bolted to the top surface of the small longitudinal beam 27. The bottom of the small longitudinal beam 27 is bolted to the top surface of the cross beam 23. The longitudinal beam 28 is bolted between multiple cross beams 23.

[0041] Furthermore, the aforementioned walking system 3 includes a walking wheel 31, a walking wheel frame 32, and a drive mechanism 33. To facilitate walking and simplify the track laying process, the walking wheel 31 is a solid rubber wheel. The drive mechanism 33 includes a drive motor 331, a drive sprocket 332, and a driven sprocket 333. The walking wheel 31 is installed inside the walking wheel frame 32 via a transmission shaft 34. The top of the walking wheel frame 32 is bolted to the support leg 29. The drive mechanism 33 connects to the transmission shaft 34 to drive the walking wheel 31 to move. Specifically, the drive motor 331 is fixedly installed on the outside of the walking wheel frame 32. The output shaft of the drive motor 331 is fixedly connected to the drive sprocket 332. The drive sprocket 332 is connected to the driven sprocket 333 via a transmission chain 333. The driven sprocket 333 is fixedly installed on the transmission shaft 34 on one side of the walking wheel 31. The drive motor 331 drives the driven sprocket 333 to rotate through the drive sprocket 332, thereby causing the transmission shaft 34 to rotate and the walking wheel 31 to rotate and move.

[0042] A slot 211 is longitudinally opened at the connection between the lower longitudinal beam 21 and the side column 24. The lower part of the side column 24 has a cavity 241. The upper part of the support leg 29 passes through the slot 211 through the lower longitudinal beam 21 and extends into the cavity 241 of the side column 24. The top of the support leg 29 is bolted to the telescopic rod of the vertical cylinder 44. The cylinder seat of the vertical cylinder 44 is bolted to the top plate of the cavity 241. The bottom of the support leg 29 is bolted to the walking system 3. A positioning key 212 is horizontally provided in the middle of the slot 211 of the lower longitudinal beam 21. Two vertical guide grooves 291 are opened on the side wall of the support leg 29 to match the positioning key 212. The positioning key 212 passes through the guide grooves 291 through the support leg 29 and is connected to the lower longitudinal beam 21 at both ends by screws. When the walking wheel is in the forward movement state, the positioning key is installed to limit the support leg 29. The vertical cylinder 44 is operated to make the support leg 29 move up and down and remain stable in the horizontal direction. The bottom end of the lower longitudinal beam 21 on one side of the outrigger 29 is bolted to the trestle jack 54, and the bottom end of the trestle jack 54 is bolted to the pad 55. When the vertical cylinder 44 retracts, the pad 54 extends outward to support the weight of the trolley at the bottom end of the traveling wheel 31. When the vertical cylinder 44 extends, the bottom end of the traveling wheel 31 extends outward to support the movement of the trolley at the bottom end of the pad 54. To achieve longitudinal and lateral movement of the traveling system, it is designed to be rotatable, meaning the outrigger 29 can drive the traveling system to rotate 90°. When widening is required, the vertical cylinder 44 retracts, the trestle jack 54 extends, the pad 55 supports the trolley, and the traveling wheel 31 moves upward and is suspended in the air. The rotation of the vertical cylinder 44 drives the outrigger 29 to rotate, and the traveling wheel 31 rotates outward by 90°, achieving the purpose of widening. The change of mechanical operation state is convenient and quick, saving manpower.

[0043] To improve the stability of the trolley during construction, when the trolley is stationary and ready for lining, multiple anchor jacks 51 are hinged at intervals on the inner side of the bottom end of the lower longitudinal beam 21. The bottom ends of the anchor jacks 51 are inclined downwards and fixed against the support surface. Multiple side formwork anchor jacks 52 are hinged at intervals on the bottom ends of side formwork 13 and side formwork 24. The bottom ends of the side formwork anchor jacks 52 are inclined downwards and fixed against the support surface. A side formwork jack 53 is provided on one side of the side formwork telescopic cylinder 42. One end of the side formwork jack 53 is hinged to side formwork 13 or side formwork 24, and the other end is hinged to the lower longitudinal beam 21.

[0044] A horizontal moving seat 6 is also provided between the outrigger 29 and the walking system 3. The top surface of the horizontal moving seat 6 near the outer end has a sliding groove 61 and a sliding cavity 62 inside. The bottom end of the outrigger 29 has a round tube 292, which is located in the sliding cavity 62 and is coaxial with the horizontal moving seat 6. The outrigger 29 is slidably connected to the horizontal moving seat 6 through the sliding groove 61. The inner end of the horizontal moving seat 6 extends into the trolley, and the top end is connected to the outrigger 29 through connecting ears. A horizontal pushing cylinder 45 is installed. A horizontal sliding sleeve 63 is sleeved in the round tube 292 and its two ends are fixedly connected to the horizontal moving seat 6. The bottom end of the outer end of the horizontal moving seat 6 is bolted to the top of the walking wheel frame 32. When only a small range of adjustment of the walking width or the walking centerline is needed, the horizontal pushing cylinder 45 is extended and retracted to make the horizontal moving seat 6 and the outrigger 29 move relative to each other, thereby adjusting the position of the walking wheel 31 of the walking system 3. The operation is convenient and the practicality is strong.

[0045] The method for using the tunnel emergency stopping lane lining trolley includes the following steps:

[0046] First, install the lining trolley outside the tunnel. During installation, retract the gantry beam first, such as... Figures 10-13 First, dismantle the small columns. Keep arch formwork one stationary. Then, push the rotating cylinder of arch formwork two upwards to separate the connection between arch formwork one and arch formwork two. Next, operate the rotating cylinder of arch formwork one to lower arch formwork one. Then, operate the rotating cylinder of arch formwork two to lower arch formwork two. Arch formwork one and arch formwork two will be in a folded state. At the same time, retract the crossbeam to its shortest length. In the retracted state, continuously adjust the distance between arch formwork one and arch formwork two to ensure the dimensions of the tunnel face. In this state, the trolley can travel in the tunnel section. During the process of entering the tunnel, adjust the centerline of the trolley as a whole. Operate the rotating cylinder of arch formwork and crossbeam in reverse order according to the dimensions of the tunnel to open arch formwork one and arch formwork two until the construction requirements of the tunnel are met. Install and tighten the inner and outer sleeve connectors of the crossbeam. Tighten the connection between the top of arch formwork one and the top of arch formwork two.

[0047] When the emergency stopping lane section is reached, extend the saddle jack and retract the vertical cylinder. The support trolley is then suspended in the air. Remove the positioning key and manually rotate the walking system outward by 90°. The walking wheels, horizontal moving seat, and outriggers will all rotate 90°. Then reinstall the positioning key to fix the outriggers horizontally. Extend the vertical cylinder and move the outriggers downward in a directional direction until the walking wheels contact the support surface. Retract the saddle jack and suspend the support block in the air. At this point, the walking system can move.

[0048] Disassemble the inner and outer sleeve connectors. The outer and inner sleeves are in a telescopic state. Extend the operating width adjustment cylinder. The inner and outer sleeves move outward relative to each other to widen the crossbeam. At the same time, the drive mechanism drives the traveling wheels to move to both sides, so that the trolley gantry is widened to the lining working position. Install and tighten the inner and outer sleeve connectors. Loosen the connection between arch formwork one and arch formwork two. Then operate the arch formwork rotation cylinder to open arch formwork one and arch formwork two. Then install the small column between arch formwork one, arch formwork two and the small longitudinal beam. Then connect and tighten the arch formwork on both sides with bolts. This completes the change of the trolley lining state of the emergency stop lane. Then adjust the centerline according to the conventional trolley operation. Finally, the lining operation is completed. After the lining of the entire section of the emergency stop lane is completed, change to the main tunnel traveling state in the reverse order of entering the emergency stop lane and then move to the next working face.

[0049] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A gantry structure for transferring lining trolleys, characterized in that, The system includes a gantry (2) and a walking system (3). The gantry (2) includes multiple parallel crossbeams (23). The crossbeams (23) adopt a telescopic structure. The two ends of the crossbeams (23) are bolted to the upper longitudinal beams (22). The two ends of the crossbeams (23) are fixedly connected to the columns. The bottom ends of the columns are bolted to the lower longitudinal beams (21). The lower longitudinal beams (21) are connected to the walking system (3) through the legs (29) at both ends. The walking system (3) can rotate 90 degrees to make the trolley move longitudinally or laterally.

2. The gantry structure for transferring lining trolleys according to claim 1, characterized in that, The columns include side columns (24) located at the front and rear ends of the trolley and a central column (25) located in the middle. A slot (211) is longitudinally opened at the connection between the lower longitudinal beam (21) and the side column (24). A cavity (241) is provided at the lower part of the side column (24). The upper part of the support leg (29) passes through the slot (211) through the lower longitudinal beam (21) and extends into the cavity (241) of the side column (24). The top of the support leg (29) is bolted to a vertical hydraulic cylinder. The telescopic rod of 44) is bolted to the top plate of the cavity (241) of the cylinder seat of the vertical cylinder (44); the bottom end of the lower longitudinal beam (21) on one side of the outrigger (29) is bolted to the saddle jack (54), and the bottom end of the saddle jack (54) is bolted to the pad (55). When the vertical cylinder (44) retracts, the pad (55) extends out of the bottom end of the traveling wheel (31). When the vertical cylinder (44) extends, the bottom end of the traveling wheel (31) extends out of the pad (55).

3. The gantry structure for transferring lining trolleys according to claim 2, characterized in that, The lower longitudinal beam (21) has a horizontally positioned key (212) in the middle of the slot (211). The side wall of the support leg (29) is matched with the positioning key (212) and has two vertical guide grooves (291) opposite to it. The positioning key (212) passes through the guide grooves (291) and is connected to the lower longitudinal beam (21) at both ends by screws.

4. The gantry structure for transferring lining trolleys according to claim 2, characterized in that, The walking system (3) includes a walking wheel (31), a walking wheel frame (32) and a drive mechanism (33). The walking wheel (31) is installed in the walking wheel frame (32) through a drive shaft. The top of the walking wheel frame (32) is bolted to the support leg (29). The drive mechanism (33) is connected to the drive shaft to drive the walking wheel to walk.

5. The gantry structure for transferring lining trolleys according to claim 4, characterized in that, The drive mechanism (33) includes a drive motor (331), a drive sprocket (332), and a driven sprocket (333). The drive motor (331) is fixedly installed on the outside of the walking wheel frame (32). The output shaft of the drive motor (331) is fixedly connected to the drive sprocket (332). The drive sprocket (332) is connected to the driven sprocket (333) through a transmission chain. The driven sprocket (333) is fixedly installed on the transmission shaft on one side of the walking wheel (31).

6. The gantry structure for transferring lining trolleys according to claim 1, characterized in that, A horizontal moving seat (6) is provided between the outrigger (29) and the walking system (3). The top surface of the horizontal moving seat (6) near the outer end has a sliding groove (61) and a sliding cavity (62) inside. The bottom end of the outrigger (29) has a round tube (292). The round tube (292) is located in the sliding cavity (62) and is coaxial with the horizontal moving seat (6). The outrigger (29) is slidably connected to the horizontal moving seat (6) through the sliding groove (61). The inner end of the horizontal moving seat (6) extends into the trolley and the top end is connected to the outrigger (29) through connecting ears. A horizontal pushing cylinder (45) is installed between the horizontal moving seat (6) and the outrigger (29). The horizontal sliding sleeve (63) is sleeved in the round tube (292) and the two ends are fixedly connected to the horizontal moving seat (6). The bottom surface of the outer end of the horizontal moving seat (6) is bolted to the top of the walking system. By extending and retracting the horizontal pushing cylinder (45), the horizontal moving seat (6) and the outrigger (29) move relative to each other, and the position of the walking system (3) is adjusted.

7. The gantry structure for transferring lining trolleys according to claim 1, characterized in that, The crossbeam (23) is a telescopic sleeve structure, including an outer sleeve (231) and an inner sleeve (232). The outer sleeve (231) is a hollow pipe with an opening at one end. The closed end of the outer sleeve (231) is bolted to the upper longitudinal beam (22). The outer wall of the outer sleeve (231) near the opening is provided with an inner and outer sleeve connector (233). The inner sleeve (232) is movably sleeved inside the outer sleeve (231) and one end extends out from the opening and is bolted to the upper longitudinal beam (22) at the other end. A width adjustment cylinder (43) is hinged between the inner wall of the outer sleeve (231) and the outer wall of the inner sleeve. The width adjustment cylinder (43) extends and drives the inner sleeve (232) to move outward. The inner and outer sleeve connector (233) is used to fasten the outer sleeve (231) and the inner sleeve (232).

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