Aerial work platform for railway tunnels

Abstract

The application relates to a lifting operation platform for a railway tunnel, which comprises a door-shaped lifting leg, a sliding operation platform and the like, wherein the door-shaped lifting leg comprises two groups of multistage telescopic legs which are parallel to each other and are arranged at intervals, the bottom of each group of multistage telescopic legs is provided with a rail wheel set and a road wheel set, the running directions of the rail wheel set and the road wheel set are perpendicular to each other, the lower edge of the road wheel set is lower than that of the rail wheel set, the sliding operation platform comprises an operation frame translation sliding rail which is fixedly connected to the top of the two groups of multistage telescopic legs, and an operation frame which is slidingly connected to the operation frame translation sliding rail and reciprocally translates along the length direction of the operation frame translation sliding rail. When the lifting operation platform is used for operation construction in the tunnel, the multistage telescopic legs are supported on the ground by the road wheel set, so that the tunnel operation personnel and equipment can pass below the door-shaped lifting leg. When the lifting operation platform needs to be moved in the tunnel, the multistage telescopic legs are supported on the rail by the rail wheel set for transfer, and the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a lifting operation platform for railway tunnels. Background Technology

[0002] Existing tunnel high-altitude and sidewall operations largely rely on traditional scaffolding, which requires on-site assembly and disassembly. This is not only time-consuming and labor-intensive, but also prevents rapid relocation between work sites, significantly limiting transport capabilities and drastically reducing construction efficiency. Furthermore, once erected, scaffolding cannot be moved, limiting the working area and making it difficult to adapt to the diverse work requirements at the tunnel roof, sidewalls, and other locations.

[0003] In tunnel construction scenarios, trackless surfaces and rail tracks coexist. Existing tunnel high-altitude operation equipment is mostly single-function, only capable of single-mode trackless or rail-based transportation. Cross-scenario transportation requires additional auxiliary equipment, which is time-consuming and labor-intensive, seriously affecting the construction progress. Moreover, ground traffic scenarios are complex, and traditional equipment is bulky and can easily affect the passage of personnel and vehicles.

[0004] Existing tunnel aerial work equipment often separates transportation and operational functions, requiring multiple specialized devices (such as dedicated transport vehicles, aerial work platforms, and scaffolding) to coordinate construction. This results in high equipment investment costs and cumbersome transfer and switching between devices, further reducing construction efficiency. Some lifting devices also have complex structures and large weights, lacking adaptability and making them difficult to apply to various operational scenarios. Summary of the Invention

[0005] This application provides a lifting operation platform for railway tunnels to solve the problem that existing tunnel high-altitude operation equipment in related technologies is mostly single-function, only able to realize a single trackless or tracked transfer mode, and cross-scenario transfer requires additional auxiliary equipment, which is time-consuming and labor-intensive, and seriously affects the construction progress.

[0006] This application provides a lifting operation platform for railway tunnels, comprising: A portal-type lifting outrigger includes two sets of multi-stage telescopic outriggers that are parallel to each other and spaced apart. Each set of multi-stage telescopic outriggers is provided with a rail wheel set and a road wheel set at its bottom. The traveling directions of the rail wheel set and the road wheel set are perpendicular to each other, and the lower edge of the road wheel set is lower than that of the rail wheel set. A sliding work platform includes a work frame translation rail fixedly connected to the top of two sets of multi-stage telescopic outriggers, and a work frame slidably connected to the work frame translation rail, wherein the work frame reciprocates along the length direction of the work frame translation rail.

[0007] In some embodiments: the multi-stage telescopic outrigger includes a bottom telescopic joint, a middle telescopic joint, and an upper telescopic joint that are slidably connected from bottom to top; The bottom expansion joint, middle expansion joint, and upper expansion joint are all vertical rectangular structures with a set thickness; A lifting drive mechanism is provided between the bottom telescopic joint, the middle telescopic joint, and the upper telescopic joint to drive the middle telescopic joint and the upper telescopic joint to move synchronously.

[0008] In some embodiments: each group of multi-stage telescopic outriggers has two sets of rail wheel sets and two sets of road wheel sets at the bottom, and the two sets of road wheel sets are fixed at the front and rear ends below the bottom telescopic joint; The two sets of rail wheelsets are fixed below the bottom expansion joint and located between the two sets of road wheelsets.

[0009] In some embodiments: the bottom telescopic joint has a first cavity for accommodating the middle telescopic joint, and the top of the bottom telescopic joint has a first upper opening for extending out and sliding into the middle telescopic joint; The middle expansion joint has a second cavity for accommodating the upper expansion joint, and the top of the middle expansion joint has a second upper opening that extends out and slides into the upper expansion joint.

[0010] In some embodiments: the lifting drive mechanism includes a transmission shaft passing through the upper and lower ends of the central telescopic section and rotatably connected to the central telescopic section; The top of the drive shaft is fixedly connected to an upper worm gear, and the bottom of the drive shaft is fixedly connected to a lower worm gear. And a lower rack fixed to the bottom telescopic joint and meshing with the lower worm gear, and an upper rack fixed to the upper telescopic joint and meshing with the upper worm gear; The drive shaft is connected to a drive motor that drives it to rotate in both directions, and the drive motor is fixed on the central telescopic joint.

[0011] In some embodiments: the central telescopic joint has two drive shafts, which are located at the front and rear ends of the central telescopic joint respectively. The top of each of the two drive shafts is fixedly connected to an upper worm gear, and the bottom of each of the two drive shafts is fixedly connected to a lower worm gear. The bottom telescopic joint has two lower racks, both of which are located in the first cavity and at the front and rear ends of the middle telescopic joint, respectively. The two lower racks are respectively engaged with the lower worm gears at the bottom of the two drive shafts. The upper telescopic joint has two upper racks, which are fixed at the front and rear ends of the upper telescopic joint respectively, and are respectively engaged with the upper worm gears at the top of the two drive shafts. A driven synchronous pulley is connected to each of the two transmission shafts, a driving synchronous pulley is connected to the output shaft of the drive motor, and the driven synchronous pulley and the driving synchronous pulley are in meshing transmission connection via a synchronous belt.

[0012] In some embodiments: The front and rear ends of the middle telescopic section are each provided with a guide chute extending along the length direction of the lower rack, the lower rack is located in the guide chute, and the middle telescopic section moves up and down along the height direction of the lower rack.

[0013] In some embodiments: A plurality of mutually parallel and spaced cross beams are connected between the middle telescopic sections of the two sets of multi-stage telescopic outriggers, and the cross beams are connected to the tops of the middle telescopic sections; Transverse telescopic struts are provided on the outer walls of the upper telescopic sections of the two sets of multi-stage telescopic outriggers, and the transverse telescopic struts are connected to the tops of the upper telescopic sections; Longitudinal telescopic struts are provided at the bottoms of the bottom telescopic sections of the two sets of multi-stage telescopic outriggers, and the ends of the longitudinal telescopic struts are provided with support feet that vertically support the longitudinal telescopic struts.

[0014] In some embodiments: Two translation slide rails for the working frame are provided, the two translation slide rails for the working frame are arranged parallel to each other at intervals, and the cross section of each of the two translation slide rails for the working frame is a "C"-shaped structure; At least two sets of guide pulleys located in the translation slide rails for the working frame are connected to the front and rear ends of the working frame, and limit baffles for limiting the travel range of the guide pulleys are provided at both ends of the two translation slide rails for the working frame.

[0015] In some embodiments: The working frame includes a rectangular bottom plate, a rigid fence is enclosed on the top of the rectangular bottom plate, a linear module located between the two translation slide rails for the working frame is provided at the bottom of the rectangular bottom plate, and the linear module drives the working frame to move back and forth along the length direction of the translation slide rails for the working frame.

[0016] The beneficial effects brought by the technical solutions provided by the present application include: The embodiments of the present application provide a lifting work platform for railway tunnels. Since the lifting work platform for railway tunnels of the present application is provided with gantry lifting outriggers, the gantry lifting outriggers include two sets of multi-stage telescopic outriggers arranged parallel to each other at intervals, the bottom of each set of multi-stage telescopic outriggers is provided with a rail wheel set and a road wheel set, the traveling directions of the rail wheel set and the road wheel set are perpendicular to each other, and the lower edge of the road wheel set is lower than the rail wheel set; the sliding work platform includes translation slide rails for the working frame fixedly connected to the tops of the two sets of multi-stage telescopic outriggers, and a working frame slidably connected to the translation slide rails for the working frame, and the working frame performs reciprocating translation movement along the length direction of the translation slide rails for the working frame.

[0017] Therefore, the lifting platform for railway tunnels of this application consists of two sets of multi-stage telescopic outriggers arranged parallel to each other and spaced apart to form a portal frame structure. Each set of multi-stage telescopic outriggers has a rail wheel assembly and a road wheel assembly at its bottom. When the lifting platform is operating inside the tunnel, the multi-stage telescopic outriggers are supported on the ground by the road wheel assemblies, while the portal-shaped lifting outriggers rise to a set height and span across both sides of the rails, facilitating passage of personnel and equipment inside the tunnel. When the lifting platform needs to be moved within the tunnel, the multi-stage telescopic outriggers are supported on the rails by the rail wheel assemblies, allowing it to be transported along the rails to the designated work position, greatly improving the efficiency of high-altitude operations within the tunnel.

[0018] Furthermore, the multi-stage telescopic outriggers of the lifting platform for railway tunnels in this application can automatically extend and retract according to the actual working height, thereby flexibly adjusting the lifting height of the working frame. To facilitate side work of the working frame within the tunnel, a working frame translation rail is provided at the top of the two sets of multi-stage telescopic outriggers. The working frame is slidably connected to the working frame translation rail. By moving left and right on the working frame translation rail, the working frame can approach the left and right sides of the tunnel. This allows workers positioned inside the working frame to directly move the left and right positions of the working frame without moving the portal-type lifting outriggers, expanding the working frame's coverage area within the tunnel and improving the efficiency of high-altitude operations within the tunnel. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first-view perspective structural perspective view of an embodiment of this application; Figure 2 This is a structural perspective view of an embodiment of this application from a second viewpoint; Figure 3 for Figure 2 A magnified view of a section at point I; Figure 4 for Figure 2 Enlarged view of a section at point II; Figure 5 This is a front view of the structure of the multi-stage telescopic outriggers in the extended state according to an embodiment of this application; Figure 6 This is a three-dimensional structural view of the multi-stage telescopic outriggers in the extended state according to an embodiment of this application; Figure 7 This is a perspective view of the structure in the contracted state according to an embodiment of this application; Figure 8 This is a front view of the structure of the multi-stage telescopic outriggers in the retracted state according to an embodiment of this application.

[0021] Figure label: 10. Gantry-type lifting outriggers; 11. Multi-stage telescopic outriggers; 12. Highway wheel set; 13. Rail wheel set; 14. Lifting drive mechanism; 15. Crossbeam; 20. Sliding work platform; 21. Working frame translation rail; 22. Working frame; 23. Linear module; 24. Rectangular base plate; 25. Rigid fence; 26. Guide pulleys; 111. Bottom telescopic joint; 112. Middle telescopic joint; 113. Upper telescopic joint; 114. Lateral telescopic strut; 115. Longitudinal telescopic strut; 116. Support leg; 117. Guide groove; 141. Drive shaft; 142. Lower worm gear; 143. Upper worm gear; 144. Lower rack; 145. Upper rack; 146. Driven synchronous pulley; 147. Synchronous belt; 148. Drive motor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] This application provides a lifting operation platform for railway tunnels, which can solve the problem that existing tunnel high-altitude operation equipment in related technologies is mostly single-function, can only realize a single trackless or tracked transfer mode, and requires additional auxiliary equipment for cross-scenario transfer, which is time-consuming and labor-intensive, and seriously affects the construction progress.

[0024] See Figure 1 , Figure 2 and Figure 7 As shown, this application embodiment provides a lifting operation platform for railway tunnels, including: The portal-type lifting outrigger 10 includes two sets of multi-stage telescopic outriggers 11 arranged parallel to each other and spaced apart. Each set of multi-stage telescopic outriggers 11 has a rail wheel assembly 13 and a road wheel assembly 12 at its bottom. The rail wheel assembly 13 and the road wheel assembly 12 travel perpendicular to each other, and the lower edge of the road wheel assembly 12 is lower than the rail wheel assembly 13. The two sets of multi-stage telescopic outriggers 11 can support the bottom surface of the tunnel or the rails of the tunnel via the rail wheel assembly 13 and the road wheel assembly 12. The two sets of multi-stage telescopic outriggers 11 move synchronously to lift the working frame 22 to a set height.

[0025] The sliding work platform 20 includes a work frame translation rail 21 fixedly connected to the top of two sets of multi-stage telescopic outriggers 11, and a work frame 22 slidably connected to the work frame translation rail 21. The work frame 22 reciprocates along the length of the work frame translation rail 21. The work frame 22 and the work frame translation rail 21 are located on top of the two sets of multi-stage telescopic outriggers 11. The work frame 22 provides platform support for workers to perform high-altitude operations in the tunnel, and the work frame translation rail 21 provides guidance for the left and right translation of the work frame 22 in the tunnel, increasing the working coverage area of ​​the work frame 22.

[0026] In this embodiment of the lifting platform for railway tunnels, two sets of multi-stage telescopic outriggers 11 are arranged parallel to each other and spaced apart to form a portal frame structure. Each set of multi-stage telescopic outriggers 11 has a rail wheel set 13 and a road wheel set 12 at its bottom. When the lifting platform is operating inside the tunnel, the multi-stage telescopic outriggers 11 are supported on the ground by the road wheel sets 12, and the portal lifting outriggers 10 rise to a set height and span across both sides of the rails, facilitating passage of personnel and equipment inside the tunnel. When the lifting platform needs to be moved within the tunnel, the multi-stage telescopic outriggers 11 are supported on the rails by the rail wheel sets 13, allowing it to be transported along the rails to the designated work position, greatly improving the efficiency of high-altitude operations within the tunnel.

[0027] Furthermore, the multi-stage telescopic outriggers 11 of the lifting platform for railway tunnels in this embodiment can automatically extend and retract according to the actual working height, thereby flexibly adjusting the lifting height of the working frame 22. To facilitate the working frame 22's side work within the tunnel, a working frame translation rail 21 is provided at the top of the two sets of multi-stage telescopic outriggers 11. The working frame 22 is slidably connected to the working frame translation rail 21. By moving left and right on the working frame translation rail 21, the working frame 22 can approach the left and right sides of the tunnel. This allows workers positioned inside the working frame 22 to move the working frame 22 directly to the left and right positions without moving the portal-type lifting outriggers 10, expanding the working coverage area of ​​the working frame 22 within the tunnel and improving the efficiency of high-altitude operations within the tunnel.

[0028] In some alternative embodiments: see Figures 1 to 5As shown in the illustration, this application provides a lifting platform for railway tunnels. The multi-stage telescopic outriggers 11 of this platform include a bottom telescopic section 111, a middle telescopic section 112, and an upper telescopic section 113, which are sequentially and slidably connected from bottom to top. The bottom telescopic section 111, middle telescopic section 112, and upper telescopic section 113 are all vertical rectangular structures with a predetermined thickness. A lifting drive mechanism 14 is provided between the bottom telescopic section 111, middle telescopic section 112, and upper telescopic section 113 to drive the middle telescopic section 112 and upper telescopic section 113 to extend and retract synchronously. The multi-stage telescopic outriggers 11 are not limited to the three-stage telescopic mechanism consisting of the bottom telescopic section 111, middle telescopic section 112, and upper telescopic section 113 described above. Those skilled in the art can increase or decrease the number of sections of the multi-stage telescopic outriggers 11 to meet actual working height requirements.

[0029] Each set of multi-stage telescopic outriggers 11 preferably has two sets of rail wheel sets 13 and road wheel sets 12 at the bottom of the telescopic joint 111. The two sets of road wheel sets 12 are fixed at the front and rear ends below the bottom telescopic joint 111, and both sets of road wheel sets 12 are equipped with brakes. The two sets of rail wheel sets 13 are fixed below the bottom telescopic joint 111 and located between the two sets of road wheel sets 12, with the distance between the two sets of rail wheel sets 13 being the distance between two parallel rails. When it is necessary to move the lifting platform within the tunnel, the lifting platform is rotated horizontally by 90° and supported on the rails by the rail wheel sets 13. The lifting platform is then moved along the length of the rails to the designated work position.

[0030] In some alternative embodiments: see Figures 1 to 8 As shown in the figure, this application embodiment provides a lifting operation platform for railway tunnels. The lifting operation platform has a first cavity in the bottom telescopic section 111 to accommodate the middle telescopic section 112, and a first upper opening at the top of the bottom telescopic section 111 to extend into and slide into the middle telescopic section 112. The middle telescopic section 112 has a second cavity in the middle telescopic section to accommodate the upper telescopic section 113, and a second upper opening at the top of the middle telescopic section 112 to extend into and slide into the upper telescopic section 113.

[0031] The lifting drive mechanism 14 includes a drive shaft 141 that passes through the upper and lower ends of the middle telescopic joint 112 and is rotatably connected to the middle telescopic joint 112. An upper worm gear 143 is fixedly connected to the top of the drive shaft 141, and a lower worm gear 142 is fixedly connected to the bottom of the drive shaft 141. It also includes a lower rack 144 fixed to the bottom telescopic joint 111 and meshing with the lower worm gear 142, and an upper rack 145 fixed to the upper telescopic joint 113 and meshing with the upper worm gear 143.

[0032] The drive shaft 141 is connected to a drive motor 148 that drives its forward and reverse rotation. The drive motor 148 is fixed on the middle telescopic joint 112. In this embodiment, when the lifting drive mechanism 14 drives the middle telescopic joint 112 and the upper telescopic joint 113 to move synchronously forward and backward, the drive motor 148 drives the drive shaft 141 to rotate in both directions. The upper worm gear 143 and the lower worm gear 142 located at the upper and lower ends of the drive shaft 141 also follow the drive shaft 141 to rotate synchronously in both directions.

[0033] The upper worm gear 143 meshes with the upper rack 145 on the upper telescopic joint 113, converting the rotational motion into linear motion that drives the upper rack 145 and the upper telescopic joint 113 to move up and down synchronously. The lower worm gear 142 meshes with the lower rack 144 on the bottom telescopic joint 111. Since the bottom telescopic joint 111 and the lower rack 144 are fixed, the lower worm gear 142 converts the rotational motion into linear motion that drives the transmission shaft 141 and the middle telescopic joint 112 to move up and down synchronously.

[0034] In some alternative embodiments: see Figures 1 to 8 As shown in the figure, this application embodiment provides a lifting operation platform for railway tunnels. The lifting operation platform has two drive shafts 141 on the central telescopic section 112, which are located at the front and rear ends of the central telescopic section 112, respectively. The top of each drive shaft 141 is fixedly connected to an upper worm gear 143, and the bottom of each drive shaft 141 is fixedly connected to a lower worm gear 142.

[0035] Two lower racks 144 are also provided on the bottom telescopic joint 111. Both lower racks 144 are located in the first cavity and are respectively located at the front and rear ends of the middle telescopic joint 112. The two lower racks 144 are respectively engaged with the lower worm gears 142 at the bottom of the two drive shafts 141. Two upper racks 145 are also provided on the upper telescopic joint 113. The two upper racks 145 are respectively fixed at the front and rear ends of the upper telescopic joint 113 and are respectively engaged with the upper worm gears 143 at the top of the two drive shafts 141.

[0036] Driven synchronous pulleys 146 are connected to the bottom of both drive shafts 141, and the output shaft of the drive motor 148 is connected to a driving synchronous pulley. The driven synchronous pulleys 146 and the driving synchronous pulley are connected by a synchronous belt 147. The drive motor 148 is a motor with an integrated brake module. When the drive motor 148 loses power, it can immediately brake to improve safety performance. In addition, the upper worm gear 143 and upper rack 145, as well as the lower worm gear 142 and lower rack 144 in this embodiment have a self-locking function, further improving the safety performance after the drive motor 148 loses power.

[0037] In some alternative embodiments: see Figures 1 to 8As shown, an embodiment of the present application provides a lifting work platform for railway tunnels, wherein the front and rear ends of the middle telescopic section 112 of the lifting work platform are each provided with a guide sliding groove 117 extending along the length direction of the lower rack 144, the lower rack 144 is located inside the guide sliding groove 117, the middle telescopic section 112 moves up and down along the height direction of the lower rack 144, and the lower rack 144 provides positioning and guiding for the telescopic movement of the middle telescopic section 112. A plurality of parallel and spaced apart cross beams 15 are connected between the middle telescopic sections 112 of the two sets of multi-stage telescopic outriggers 11, the cross beams 15 are connected to the top of the middle telescopic sections 112, and the plurality of parallel and spaced apart cross beams 15 are used to integrate the two sets of multi-stage telescopic outriggers 11 into a whole, so as to improve the structural stability of the two sets of multi-stage telescopic outriggers 11.

[0038] The outer wall of the upper telescopic section 113 of each of the two sets of multi-stage telescopic outriggers 11 is provided with a transversely telescopic strut 114, and the transversely telescopic strut 114 is connected to the top of the upper telescopic section 113 for supporting against the side wall of the tunnel. The bottom of the bottom telescopic section 111 of each of the two sets of multi-stage telescopic outriggers 11 is provided with a longitudinally telescopic strut 115, both ends of the longitudinally telescopic strut 115 are provided with support feet 116 for vertically supporting the longitudinally telescopic strut 115, and the support feet 116 are in threaded connection with the longitudinally telescopic strut 115 so that the longitudinally telescopic strut 115 is supported on the ground of the tunnel. The transversely telescopic struts 114 and the longitudinally telescopic struts 115 are used to improve the overturning resistance of the lifting work platform and enhance operation safety.

[0039] In some optional embodiments, refer to Figures 1 to 8 As shown, an embodiment of the present application provides a lifting work platform for railway tunnels, wherein the work frame translation slide rails 21 of the lifting work platform are provided in two pieces, the two work frame translation slide rails 21 are arranged parallel to each other at intervals, and the cross section of each of the two work frame translation slide rails 21 is of a "C" shaped structure. The front and rear ends of the work frame 22 are each connected with at least two sets of guide pulleys 26 located inside the work frame translation slide rails 21, and both ends of the two work frame translation slide rails 21 are provided with limit baffles for limiting the travel range of the guide pulleys 26.

[0040] The work frame 22 includes a rectangular bottom plate 24, a rigid fence 25 is enclosed at the top of the rectangular bottom plate 24, a linear module 23 located between the two work frame translation slide rails 21 is arranged at the bottom of the rectangular bottom plate 24, and the linear module 23 drives the work frame 22 to move back and forth along the length direction of the work frame translation slide rails 21. The linear module 23 is preferably, but not limited to, a synchronous belt linear module, a rack and pinion linear module, a lead screw linear module, and the like.

[0041] Working principle This application provides a lifting platform for railway tunnels. The lifting platform for railway tunnels includes portal-type lifting outriggers 10, which comprise two sets of parallel and spaced-apart multi-stage telescopic outriggers 11. Each set of multi-stage telescopic outriggers 11 has a rail wheel set 13 and a road wheel set 12 at its bottom. The rail wheel set 13 and the road wheel set 12 travel perpendicularly to each other, and the lower edge of the road wheel set 12 is lower than the rail wheel set 13. A sliding working platform 20 is also provided. This sliding working platform 20 includes a working frame translation rail 21 fixedly connected to the top of the two sets of multi-stage telescopic outriggers 11, and a working frame 22 slidably connected to the working frame translation rail 21. The working frame 22 reciprocates along the length of the working frame translation rail 21.

[0042] Therefore, the lifting platform for railway tunnels of this application consists of two sets of multi-stage telescopic outriggers 11 arranged parallel to each other and spaced apart to form a portal frame structure. Each set of multi-stage telescopic outriggers 11 has a rail wheel set 13 and a road wheel set 12 at its bottom. When the lifting platform is operating inside the tunnel, the multi-stage telescopic outriggers 11 are supported on the ground by the road wheel sets 12, and the portal lifting outriggers 10 rise to a set height and span across both sides of the rails, facilitating passage of personnel and equipment inside the tunnel from below. When the lifting platform needs to be moved within the tunnel, the multi-stage telescopic outriggers 11 are supported on the rails by the rail wheel sets 13, allowing it to be transported along the rails to the designated work position, greatly improving the efficiency of high-altitude operations inside the tunnel.

[0043] Furthermore, the multi-stage telescopic outriggers 11 of the lifting work platform for railway tunnels in this application can automatically extend and retract according to the actual working height, thereby flexibly adjusting the lifting height of the work frame. To facilitate the side construction of the work frame 22 inside the tunnel, a work frame translation rail 21 is provided at the top of the two sets of multi-stage telescopic outriggers 11. The work frame 22 is slidably connected to the work frame translation rail 21. By moving left and right on the work frame translation rail 21, the work frame 22 can approach the left and right sides of the tunnel. This allows the workers standing inside the work frame 22 to move the work frame 22 directly to the left and right positions without moving the portal-type lifting outriggers 10, expanding the working coverage area of ​​the work frame 22 inside the tunnel and improving the efficiency of high-altitude operations inside the tunnel.

[0044] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0045] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A lifting operation platform for railway tunnels, characterized in that, include: A portal-type lifting outrigger (10) includes two sets of multi-stage telescopic outriggers (11) that are parallel to each other and spaced apart. Each set of multi-stage telescopic outriggers (11) is provided with a rail wheel set (13) and a road wheel set (12) at its bottom. The rail wheel set (13) and the road wheel set (12) are perpendicular to each other, and the lower edge of the road wheel set (12) is lower than the rail wheel set (13). The sliding work platform (20) includes a work frame translation rail (21) fixedly connected to the top of the two sets of multi-stage telescopic outriggers (11), and a work frame (22) slidably connected to the work frame translation rail (21). The work frame (22) reciprocates along the length direction of the work frame translation rail (21).

2. The lifting operation platform for railway tunnels as described in claim 1, characterized in that: The multi-stage telescopic outrigger (11) includes a bottom telescopic joint (111), a middle telescopic joint (112), and an upper telescopic joint (113) that are slidably connected from bottom to top. The bottom expansion joint (111), the middle expansion joint (112) and the upper expansion joint (113) are all vertical rectangular structures with a set thickness; A lifting drive mechanism (14) is provided between the bottom telescopic section (111), the middle telescopic section (112) and the upper telescopic section (113) to drive the middle telescopic section (112) and the upper telescopic section (113) to move synchronously.

3. A lifting platform for railway tunnels as described in claim 2, characterized in that: Each group of multi-stage telescopic outriggers (11) has two sets of rail wheel sets (13) and road wheel sets (12) at the bottom. The two sets of road wheel sets (12) are fixed at the front and rear ends below the bottom telescopic joint (111). The two sets of rail wheel sets (13) are fixed below the bottom expansion joint (111) and located between the two sets of road wheel sets (12).

4. A lifting operation platform for railway tunnels as described in claim 2, characterized in that: The bottom telescopic joint (111) has a first cavity for accommodating the middle telescopic joint (112), and the top of the bottom telescopic joint (111) has a first upper opening for extending out and sliding into the middle telescopic joint (112); The middle telescopic joint (112) has a second cavity for accommodating the upper telescopic joint (113), and the top of the middle telescopic joint (112) has a second upper opening that extends out and slides into the upper telescopic joint (113).

5. A lifting platform for railway tunnels as described in claim 4, characterized in that: The lifting drive mechanism (14) includes a transmission shaft (141) that passes through the upper and lower ends of the central telescopic joint (112) and is rotatably connected to the central telescopic joint (112). The top of the drive shaft (141) is fixedly connected to an upper worm gear (143), and the bottom of the drive shaft (141) is fixedly connected to a lower worm gear (142). And a lower rack (144) fixed on the bottom telescopic joint (111) and meshing with the lower worm (142), and an upper rack (145) fixed on the upper telescopic joint (113) and meshing with the upper worm (143). The drive shaft (141) is connected to a drive motor (148) that drives it to rotate in both directions. The drive motor (148) is fixed on the central telescopic joint (112).

6. A lifting operation platform for railway tunnels as described in claim 5, characterized in that: The central telescopic joint (112) has two drive shafts (141), which are located at the front and rear ends of the central telescopic joint (112) respectively. The top of each of the two drive shafts (141) is fixedly connected to an upper worm gear (143), and the bottom of each of the two drive shafts (141) is fixedly connected to a lower worm gear (142). The bottom telescopic joint (111) has two lower racks (144), both of which are located in the first cavity and at the front and rear ends of the middle telescopic joint (112). The two lower racks (144) are respectively engaged with the lower worm gears (142) at the bottom of the two drive shafts (141). The upper telescopic joint (113) has two upper racks (145), which are fixed at the front and rear ends of the upper telescopic joint (113) respectively. The two upper racks (145) are respectively meshed with the upper worm gears (143) at the top of the two drive shafts (141). Both drive shafts (141) are connected to driven synchronous pulleys (146), and the output shaft of the drive motor (148) is connected to a driving synchronous pulley. The driven synchronous pulleys (146) and the driving synchronous pulleys are connected by a synchronous belt (147) for meshing transmission.

7. A lifting platform for railway tunnels as described in claim 6, characterized in that: The central telescopic joint (112) has guide grooves (117) extending along the length direction of the lower rack (144) at both its front and rear ends. The lower rack (144) is located in the guide grooves (117), and the central telescopic joint (112) moves up and down along the height direction of the lower rack (144).

8. A lifting operation platform for railway tunnels as described in claim 2, characterized in that: Multiple parallel and spaced crossbeams (15) are connected between the middle telescopic joints (112) of the two sets of multi-stage telescopic outriggers (11), and the crossbeams (15) are connected to the top of the middle telescopic joints (112). Both sets of multi-stage telescopic outriggers (11) have transverse telescopic struts (114) on the outer wall of the upper telescopic joint (113), and the transverse telescopic struts (114) are connected to the top of the upper telescopic joint (113); The bottom of the bottom telescopic section (111) of each of the two sets of multi-stage telescopic outriggers (11) is provided with a longitudinally telescopic strut (115), and the end of the longitudinally telescopic strut (115) is provided with a foot (116) that vertically supports the longitudinally telescopic strut (115).

9. The lifting operation platform for railway tunnels according to claim 1, characterized in that: Two operation frame translation slide rails (21) are provided, the two operation frame translation slide rails (21) are arranged in parallel and spaced apart from each other, and each of the two operation frame translation slide rails (21) has a "C"-shaped cross-section structure; Both the front and rear ends of the operation frame (22) are connected with at least two sets of guide pulleys (26) located inside the operation frame translation slide rails (21), and both ends of the two operation frame translation slide rails (21) are provided with limit baffles for limiting the travel range of the guide pulleys (26).

10. The lifting operation platform for railway tunnels according to claim 9, characterized in that: The operation frame (22) comprises a rectangular bottom plate (24), the top of the rectangular bottom plate (24) is enclosed with a rigid fence (25), the bottom of the rectangular bottom plate (24) is provided with a linear module (23) located between the two operation frame translation slide rails (21), and the linear module (23) drives the operation frame (22) to move back and forth along the length direction of the operation frame translation slide rails (21).

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