Secondary lining trolley for large longitudinal slope tunnel

Abstract

The invention relates to the technical field of engineering construction, in particular to a large longitudinal slope tunnel secondary lining trolley. The secondary lining trolley for the large-longitudinal-slope tunnel comprises a frame, a pair of supporting main beams, a pair of supporting main beams and a pair of supporting main beams, the supporting assembly is arranged on the frame, the supporting assembly comprises a plurality of supporting columns, the supporting columns are arranged on the supporting main beam, each supporting column comprises a first lifting structure and a base, and the bases make contact with the ground through the first lifting structures so as to support the frame; the advancing mechanism comprises an advancing block and a driving assembly, the advancing block is in sliding connection with the supporting main beam, and the driving assembly is connected with the advancing block so as to drive the advancing block to relatively move in the guiding direction of the supporting main beam; when the frame is supported, the advancing block is separated from the ground, the base makes contact with the ground, and when the advancing action is carried out, the base is separated from the ground, and the advancing block makes contact with the ground so as to support the frame.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, specifically to a secondary lining trolley for tunnels with steep longitudinal slopes. Background Technology

[0002] In the construction of tunnels with steep longitudinal slopes, secondary lining is a crucial process for ensuring the stability and durability of the tunnel structure. Its construction quality and efficiency directly affect the overall construction level of the tunnel project. Secondary lining construction commonly employs integral hydraulic lining trolleys. This equipment, with its advantages of strong integrity, stable support, high construction efficiency, and good forming quality, has become the mainstream choice for secondary lining construction in conventional tunnels.

[0003] However, in some tunnel construction projects, due to factors such as the large longitudinal slope of the tunnel and the frequent changes in cross-sectional shape, the integral hydraulic lining trolley was not used for secondary lining construction because of insufficient structural adaptability and difficulty in adjustment. Instead, conventional supports and templates were used. Since the supports and templates were assembled on site, and the process used timber or small templates spliced ​​together as tunnel arch cross-section templates, the construction efficiency was low and the appearance quality control of the completed secondary lining was poor. Summary of the Invention

[0004] This invention provides a secondary lining trolley for tunnels with steep longitudinal slopes, which solves the problems of low construction efficiency and poor quality control of the appearance of the completed secondary lining, caused by the on-site assembly of the support and formwork.

[0005] This invention provides a secondary lining trolley for tunnels with steep longitudinal slopes, comprising: The vehicle frame has a pair of spaced-apart main support beams; A support assembly is mounted on the vehicle frame. The support assembly includes multiple support columns, which are mounted on the main support beam. Each support column includes a first lifting structure and a base. The base contacts the ground through the first lifting structure to support the vehicle frame. A traveling mechanism, comprising a traveling block and a driving assembly, wherein the traveling block is slidably connected to the supporting main beam, and the driving assembly is connected to the traveling block to drive the traveling block to move relative to the supporting main beam along the guiding direction; When supporting the vehicle frame, the travel block is detached from the ground and the base is in contact with the ground. When moving, the base is detached from the ground and the travel block is in contact with the ground to support the vehicle frame.

[0006] Beneficial effects: This secondary lining trolley for steep longitudinal slope tunnels effectively solves the problem of traditional integral hydraulic lining trolleys being unusable due to insufficient structural adaptability and high adjustment difficulty in steep longitudinal slope tunnel construction. Through the ingenious cooperation between the support components and the traveling mechanism, the trolley can quickly switch between construction and traveling states, greatly improving construction efficiency. Simultaneously, the first lifting structure of the support column can adaptively adjust according to the ground slope, ensuring the stability of the trolley in various complex terrains. Furthermore, the coordinated work of the traveling blocks and drive components makes the trolley more stable and reliable during travel, effectively avoiding the risk of trolley slippage or overturning due to uneven ground.

[0007] In one optional embodiment, the traveling block has a cavity, the driving assembly includes a movable structure, and a guide structure is provided on the supporting main beam, with the movable structure slidingly engaging with the guide structure.

[0008] Beneficial effects: The combination of the guiding structure and the movable structure further improves the accuracy of the sliding of the traveling block and effectively avoids the problem of unstable trolley movement caused by sliding deviation.

[0009] In one optional embodiment, the movable structure includes a gear set and a motor, the guide structure is a rack, the rack is arranged along the extension direction of the supporting main beam, one gear in the gear set cooperates with the output end of the motor, and one gear in the gear set meshes with the rack.

[0010] Beneficial effects: The gear and rack transmission method has the advantages of smooth transmission, accurate transmission ratio, and compact structure, which can ensure the stability and accuracy of the traveling block during the sliding process and further improve the reliability of the trolley's movement.

[0011] In one optional embodiment, the supporting main beam is slidably connected to two traveling blocks, which are spaced apart and fixedly connected by a connecting rod.

[0012] Beneficial effects: By setting two travel blocks, the load-bearing capacity of the travel blocks is improved, further ensuring the stability of the trolley during movement. At the same time, the two travel blocks are fixedly connected by a connecting rod, so that they can remain synchronized during sliding, avoiding the problem of trolley movement being obstructed due to the poor sliding of a single travel block.

[0013] In one optional embodiment, the support assembly further includes a plurality of straight struts, which are spaced apart on the main support beam. The straight struts are connected to the second lifting structure and detach from the ground during travel.

[0014] Beneficial effects: The combination of the straight strut and the second lifting structure allows the straight strut to flexibly contact or separate from the ground according to construction needs. When supporting the gantry, it provides additional support force, enhances the overall stability of the trolley, prevents slippage or overturning, and promptly removes itself from the ground during movement to avoid obstructing the process. This further improves the adaptability and flexibility of the trolley under different construction conditions.

[0015] In one alternative embodiment, the support assembly further includes a diagonal brace disposed on one side of the straight brace, one end of which is hinged to the second lifting structure, and the diagonal brace detaches from the ground during the movement.

[0016] Beneficial effects: The installation of diagonal braces further enhances the stability and safety of the trolley during construction, especially in tunnel construction with steep longitudinal slopes. It can effectively resist the lateral forces generated by the steep slope and prevent the trolley from overturning or causing other safety accidents.

[0017] In one optional embodiment, a transverse drive structure is provided on the main support beam, the transverse drive structure is connected to the support column, and the movement direction of the transverse drive structure is perpendicular to the movement direction of the traveling mechanism.

[0018] Beneficial effects: The lateral drive structure allows the trolley to adjust its direction during construction, meeting the requirements of lining curved sections of tunnels with longitudinal slopes, further improving its flexibility and adaptability. Simultaneously, the lateral hydraulic system offers advantages such as smooth transmission and precise control, ensuring the stability and safety of the trolley during lateral movement. The lateral drive structure, in conjunction with the traveling mechanism, enables flexible movement of the trolley in both longitudinal and lateral directions, significantly improving construction efficiency.

[0019] In one alternative embodiment, the vehicle frame is provided with an anti-slip assembly, which includes a traction ring and a steel wire rope disposed on the supporting main beam. One end of the steel wire rope is fixedly connected to the traction ring, and the other end of the steel wire rope is fixedly connected to a traction device outside the tunnel.

[0020] Beneficial effects: By installing anti-slip components, the traction device can apply a certain pulling force to the trolley through the steel wire rope during the secondary lining operation, effectively preventing the trolley from sliding down and greatly improving the safety of the trolley in the construction of tunnels with steep longitudinal slopes.

[0021] In one alternative embodiment, the frame is provided with a trolley ring flange, and the side of the trolley ring flange facing the lining surface is provided with a flexible overlap structure, which abuts against the bottom of the template.

[0022] Beneficial effects: A flexible overlapping structure is adopted at the joint to reduce the impact of the trolley on the previous formwork during the lifting and placement process and concrete pouring, thereby avoiding cracking at the end of the secondary lining of the previous formwork.

[0023] In one optional embodiment, the flexible overlap structure includes an annular tray and an annular rubber plate, the annular tray being detachably connected to the trolley ring flange, and the annular rubber plate being fixedly disposed on the end face of the annular tray that abuts against the bottom of the template.

[0024] Beneficial effects: The detachable connection design between the annular pallet and the trolley's ring flange not only facilitates installation and disassembly but also allows for flexible adjustment of the pallet's height to accommodate overlapping requirements under varying slopes and construction conditions. The annular rubber sheet further enhances the sealing and cushioning performance of the flexible overlapping structure. During the trolley's lifting and placement, and concrete pouring, the annular rubber sheet effectively absorbs and disperses the force exerted on the secondary lining end of the previous formwork, reducing the risk of cracking and improving construction quality. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a side view of a secondary lining trolley for a tunnel with a steep longitudinal slope, according to an embodiment of the present invention. Figure 2 This is a front view of a secondary lining trolley for a tunnel with a steep longitudinal slope, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the flexible overlapping structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the length design of the lining trolley in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures: 1. Chassis; 2. Main support beam; 3. Support assembly; 301. Support column; 3011. First lifting structure; 3012. Base; 302. Straight strut; 303. Second lifting structure; 304. Diagonal strut; 305. Rear support component; 4. Traveling mechanism; 401. Traveling block; 402. Drive assembly; 5. Anti-slip assembly; 501. Traction ring; 6. Trolley ring flange; 7. Flexible overlapping structure; 701. Annular pallet; 702. Annular rubber plate; 8. Mast; 9. Mast reinforcement components. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0029] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0030] According to an embodiment of the present invention, a secondary lining trolley for a tunnel with a steep longitudinal slope is provided, comprising: a frame 1, a support assembly 3, and a traveling mechanism 4. The frame 1 has a pair of spaced-apart main support beams 2. The support assembly 3 is mounted on the frame 1 and includes a plurality of support columns 301 mounted on the main support beams 2. Each support column 301 includes a first lifting structure 3011 and a base 3012. The base 3012 contacts the ground via the first lifting structure 3011 to support the frame 1. The traveling mechanism 4 includes a traveling block 401 and a drive assembly 402. The traveling block 401 is slidably connected to the main support beams 2, and the drive assembly 402 is connected to the traveling block 401 to drive the traveling block 401 to move relative to the main support beams 2 along a guiding direction. When supporting the frame 1, the traveling block 401 is detached from the ground, and the base 3012 is in contact with the ground. During traveling, the base 3012 is detached from the ground, and the traveling block 401 is in contact with the ground to support the frame 1.

[0031] Specifically, such as Figure 1As shown, the frame 1 includes a pair of spaced-apart main support beams 2 and a mast 8 fixedly mounted on the main support beams 2. The pair of main support beams 2 are fixedly connected by the mast 8. The support assembly 3 includes four support columns 301, with one support column 301 at each end of the main support beam 2. Each support column 301 includes a first lifting structure 3011 and a base 3012. The first lifting structure 3011 is connected to the end of the main support beam 2 and can drive the base 3012 to rise or fall, so that the base 3012 contacts or separates from the ground. The base 3012 is hinged to the first lifting structure 3011, so that the base 3012 can adapt to the slope of the ground. A travel block 401 is disposed on the side of the main support beam 2 facing the ground. The travel block 401 is slidably connected to the main support beam 2, and the drive assembly 402 is used to drive the travel block 401 to slide relative to the main support beam 2 along the guide direction. During the secondary lining of the tunnel, the base 3012 contacts the ground to support the main beam 2 and the frame 1, and to prevent the frame 1 from sliding. At this time, the traveling block 401 is separated from the ground. When the trolley needs to move, the traveling block 401 first slides relative to the main beam 2 along the guide direction and reaches the designated position. Then, the first lifting structure 3011 drives the base 3012 to move so that the traveling block 401 moves towards the ground until the traveling block 401 contacts the ground. At this time, the base 3012 is separated from the ground. The traveling block 401 then supports the main beam 2 and the gantry 8. The drive assembly 402 can drive the main beam 2 to move relative to the traveling block 401 under the relative force, so that the traveling block 401 is reset. At this time, the gantry 8 completes its movement. After the movement is completed, the first lifting structure 3011 drives the base 3012 to move so that the base 3012 contacts the ground and the traveling block 401 is separated from the ground.

[0032] This secondary lining trolley for tunnels with steep longitudinal slopes effectively solves the problem of traditional integral hydraulic lining trolleys being unusable due to insufficient structural adaptability and high adjustment difficulty in the construction of tunnels with steep longitudinal slopes. Through the ingenious cooperation between the support component 3 and the traveling mechanism 4, the trolley can quickly switch between construction and traveling states, greatly improving construction efficiency. At the same time, the first lifting structure 3011 of the support column 301 can adaptively adjust according to the ground slope, ensuring the stability of the trolley under various complex terrains. In addition, the coordinated work of the traveling block 401 and the drive component 402 makes the trolley more stable and reliable during travel, effectively avoiding the risk of trolley slippage or overturning caused by uneven ground.

[0033] Furthermore, the first lifting structure 3011 is a hydraulic cylinder, which is fixed on the supporting main beam 2. The output shaft of the hydraulic cylinder has a rotating shaft bracket (not shown), and the rotating shaft bracket contains a rotating shaft (not shown). The base 3012 is fixedly connected to the rotating shaft.

[0034] Furthermore, a gantry reinforcement member 9 is provided on the main support beam 2. One end of the gantry reinforcement member 9 is fixedly connected to the main support beam 2, and the other end of the gantry reinforcement member 9 is fixedly connected to the gantry 8 to provide oblique support force for the gantry 8.

[0035] In one embodiment, the traveling block 401 has a cavity, the driving assembly 402 includes a movable structure, and a guide structure is provided on the supporting main beam 2, with the movable structure and the guide structure slidingly engaged.

[0036] Specifically, the top of the traveling block 401 has a C-shaped slot (not shown), the supporting main beam 2 is an I-beam, the traveling block 401 is slidably connected to the lower flange of the supporting main beam 2 through the C-shaped slot, the guide structure is set on the lower flange, and the movable structure inside the cavity is slidably engaged with the guide structure.

[0037] The combination of the guiding structure and the movable structure further improves the accuracy of the sliding of the traveling block 401, effectively avoiding the problem of unstable trolley movement caused by sliding deviation.

[0038] Furthermore, the guide structure is equipped with a limit structure, which can limit the movement of the structure.

[0039] In one embodiment, the movable structure includes a gear set and a motor, the guide structure is a rack, the rack is arranged along the extension direction of the supporting main beam 2, one gear in the gear set cooperates with the output end of the motor, and one gear in the gear set meshes with the rack.

[0040] Specifically, the motor (not shown) is fixed inside the cavity of the traveling block 401. After the motor is started, its output end drives the gear (not shown) that it is engaged with to rotate. The gear then drives the rack (not shown) that it is engaged with to move. Since the rack is set along the extension direction of the supporting main beam 2, the traveling block 401 will slide relative to the supporting main beam 2 under the action of the gear and the rack.

[0041] The gear and rack transmission method has the advantages of smooth transmission, accurate transmission ratio and compact structure, which can ensure the stability and accuracy of the traveling block 401 during the sliding process and further improve the reliability of the trolley travel.

[0042] In other embodiments, the movable structure includes a motor and a pulley, and the guide structure is the lower flange of the I-beam. The motor drives the pulley to rotate so that the pulley slides relative to the lower flange in the guide direction.

[0043] In one embodiment, the supporting main beam 2 is slidably connected to two traveling blocks 401, which are spaced apart and are fixedly connected by a connecting rod.

[0044] Specifically, such as Figure 1As shown, each supporting main beam 2 has two spaced-apart travel blocks 401 slidably connected to its bottom, and the two travel blocks 401 are fixedly connected by a connecting rod (not shown).

[0045] By setting two travel blocks 401, the load-bearing capacity of the travel blocks 401 is improved, further ensuring the stability of the trolley during movement. At the same time, the two travel blocks 401 are fixedly connected by a connecting rod, so that they can remain synchronized during sliding, avoiding the problem of trolley movement being obstructed due to the poor sliding of a single travel block 401.

[0046] In one embodiment, the support assembly 3 further includes a plurality of straight struts 302, which are spaced apart on the main support beam 2. The straight struts 302 are connected to the second lifting structure 303, and the straight struts 302 are detached from the ground when the movement is performed.

[0047] Specifically, such as Figure 1 As shown, the second lifting structure 303 is a hydraulic cylinder, and the straight support rod 302 is the output shaft of the hydraulic cylinder. Multiple straight support rods 302 on the same supporting main beam 2 are evenly spaced. When supporting the gantry 8, the second lifting structure 303 drives the straight support rod 302 to contact the ground, thereby cooperating with the support column 301; when performing the traveling action, the second lifting structure 303 drives the straight support rod 302 to lift off the ground, so that the traveling block 401 contacts the ground; after traveling, the straight support rod 302 contacts the ground under the drive of the second lifting structure 303.

[0048] The coordinated arrangement of the straight support rod 302 and the second lifting structure 303 allows the straight support rod 302 to flexibly contact or separate from the ground according to construction needs. When supporting the gantry 8, it provides additional support force, enhances the overall stability of the trolley, prevents slippage or overturning, and promptly removes itself from the ground during movement to avoid obstructing the movement process. This further improves the adaptability and flexibility of the trolley under different construction conditions.

[0049] In one embodiment, the support assembly 3 further includes a diagonal brace 304, which is disposed on one side of the straight brace 302. One end of the diagonal brace 304 is hinged to the second lifting structure 303. When the movement is performed, the diagonal brace 304 is detached from the ground.

[0050] Specifically, such as Figure 1 As shown, the upper end of the diagonal brace 304 is hinged to the second lifting structure 303, which allows the diagonal brace 304 to flexibly adjust its angle with the ground. When performing support operations, the diagonal brace 304 forms a certain angle with the ground to provide lateral support force for the trolley and enhance the trolley's anti-overturning ability. When performing moving movements, the diagonal brace 304 will promptly detach from the ground to avoid interfering with the moving process.

[0051] The installation of the diagonal brace 304 further enhances the stability and safety of the trolley during construction, especially in the construction of tunnels with steep longitudinal slopes. It can effectively resist the lateral forces generated by the steep slope and prevent the trolley from overturning or causing other safety accidents.

[0052] Furthermore, a hook (not shown) is provided on the main support beam 2, and the diagonal brace 304 can be hung on the main support beam 2 via the hook during the movement.

[0053] Furthermore, the support assembly 3 also includes a tail support 305. One end of the tail support 305 is detachably connected to the gantry 8, and the other end of the tail support 305 abuts against the ground. The tail support 305 can provide support force to the gantry 8. When performing secondary lining, the tail support 305 is installed at the rear of the trolley to prevent the trolley from sliding down. Before the movement is performed, the tail support 305 can be removed.

[0054] In one embodiment, a transverse drive structure is provided on the main support beam 2, the transverse drive structure is connected to the support column 301, and the movement direction of the transverse drive structure is perpendicular to the movement direction of the traveling mechanism 4.

[0055] Specifically, the lateral drive structure is a lateral hydraulic system (not shown), which is fixedly installed at the bottom of the supporting main beam 2. The lateral hydraulic system is connected to the supporting column 301. When the first lifting structure 3011 drives the base 3012 to move to support the trolley, the lateral hydraulic system is adjusted synchronously. The lateral hydraulic system drives the supporting column 301 to move laterally. After the base 3012 contacts the ground, the lateral hydraulic system is driven. Under the action of gravity, the supporting column 301 will not move. The supporting main beam 2 moves laterally under the drive of the relative force to reset the supporting column 301, thereby completing the lateral movement of the trolley.

[0056] The lateral drive structure allows the trolley to adjust its direction during construction, meeting the requirements of lining curves in longitudinally sloped tunnels, further improving its flexibility and adaptability. Simultaneously, the lateral hydraulic system offers advantages such as smooth transmission and precise control, ensuring the stability and safety of the trolley during lateral movement. The lateral drive structure, in conjunction with the traveling mechanism 4, enables flexible movement of the trolley in both longitudinal and lateral directions, significantly improving construction efficiency.

[0057] In one embodiment, the frame 1 is provided with an anti-slip component 5, which includes a traction ring 501 and a steel wire rope disposed on the supporting main beam 2. One end of the steel wire rope is fixedly connected to the traction ring 501, and the other end of the steel wire rope is fixedly connected to a traction device outside the tunnel.

[0058] Specifically, such as Figure 1As shown, the traction ring 501 is located at one end of the supporting main beam 2 facing the tunnel entrance. One end of the wire rope (not shown) is fixedly connected to the traction ring 501, and the other end of the wire rope extends to the tunnel entrance and is fixedly connected to the traction device (not shown) outside the tunnel. Preferably, the traction device is a winch.

[0059] By setting up the anti-slip component 5, when the trolley is performing secondary lining operations, the traction device can apply a certain pulling force to the trolley through the wire rope, effectively preventing the trolley from sliding down and greatly improving the safety of the trolley in the construction of tunnels with steep longitudinal slopes.

[0060] In one embodiment, the frame 1 is provided with a trolley ring flange 6, and a flexible overlap structure 7 is provided on the side of the trolley ring flange 6 facing the lining surface, and the flexible overlap structure 7 abuts against the bottom of the template.

[0061] Specifically, such as Figure 3 As shown, during the construction of the secondary lining of the tunnel with a steep longitudinal slope, the construction sequence is from bottom to top. Before each formwork is constructed, the secondary lining poured in the previous formwork needs to be overlapped. Considering the influence of the slope, the concrete pouring process of each formwork will put great pressure on the lining already constructed in the previous formwork. Therefore, a flexible overlap structure 7 is used at the overlap point to reduce the force of the trolley on the previous formwork during the lifting and positioning process and the concrete pouring process, and to avoid cracking at the end of the secondary lining of the previous formwork.

[0062] In one embodiment, the flexible overlap structure 7 includes an annular tray 701 and an annular rubber plate 702. The annular tray 701 is detachably connected to the trolley ring flange 6, and the annular rubber plate 702 is fixedly disposed on the end face of the annular tray 701 that abuts against the bottom of the template.

[0063] Specifically, such as Figure 3 As shown, the annular tray 701 and the trolley ring flange 6 are detachably connected by bolts (not shown). The trolley ring flange 6 has a row of bolt holes (not shown), each row having multiple bolt holes arranged along the direction of gravity, with adjacent bolt holes spaced apart. The height of the annular tray 701 can be adjusted by connecting it to bolt holes of different heights. The annular rubber plate 702 is fixed to the annular tray 701 by countersunk bolts (not shown). The annular rubber plate 702 is higher than the trolley panel. During the overlapping process, the annular rubber plate 702 can be flush with the panel after being squeezed and deformed.

[0064] The detachable connection design between the annular pallet 701 and the trolley flange 6 not only facilitates installation and disassembly but also allows for flexible adjustment of the height of the annular pallet 701 according to actual construction needs, adapting to overlapping requirements under different slopes and construction conditions. The annular rubber plate 702 further enhances the sealing and cushioning performance of the flexible overlapping structure 7. During the trolley's lifting and positioning and concrete pouring processes, the annular rubber plate 702 effectively absorbs and disperses the force on the end of the secondary lining of the previous formwork, reducing the risk of cracking and improving construction quality.

[0065] Furthermore, when the longitudinal slope of the tunnel changes, the length of the trolley needs to be designed according to the slope so that the trolley can pass through the inflection point via the traveling mechanism 4. If the trolley is too long, it will be unable to pass through the inflection point. Figure 4 As shown, the tunnel longitudinal slope changes from -6.75% to -31.71%. With the stroke of support column 301 designed to be 40cm, the maximum allowable length of the trolley can be calculated using the following formula:

[0066]

[0067] Where: L is the length of the trolley; X is half the length of the trolley; H is the maximum stroke of the first lifting structure 3011.

[0068] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A secondary lining trolley for tunnels with steep longitudinal slopes, characterized in that, include: The frame (1) has a pair of spaced-apart support beams (2); Support assembly (3), the support assembly (3) is disposed on the frame (1), the support assembly (3) includes a plurality of support columns (301), the support columns (301) are disposed on the support main beam (2), the support column (301) includes a first lifting structure (3011) and a base (3012), the base (3012) contacts the ground through the first lifting structure (3011) to support the frame (1); The traveling mechanism (4) includes a traveling block (401) and a driving component (402). The traveling block (401) is slidably connected to the supporting main beam (2), and the driving component (402) is connected to the traveling block (401) to drive the traveling block (401) to move relative to the supporting main beam (2) along the guiding direction. When supporting the frame (1), the travel block (401) is detached from the ground and the base (3012) is in contact with the ground. When moving, the base (3012) is detached from the ground and the travel block (401) is in contact with the ground to support the frame (1).

2. The secondary lining trolley for tunnels with steep longitudinal slopes according to claim 1, characterized in that, The traveling block (401) has a cavity, the driving assembly (402) includes a movable structure, and the supporting main beam (2) is provided with a guide structure, the movable structure and the guide structure are slidably engaged.

3. The secondary lining trolley for tunnels with steep longitudinal slopes according to claim 2, characterized in that, The movable structure includes a gear set and a motor. The guide structure is a rack, which is arranged along the extension direction of the supporting main beam (2). One gear in the gear set cooperates with the output end of the motor, and one gear in the gear set meshes with the rack.

4. The secondary lining trolley for tunnels with steep longitudinal slopes according to any one of claims 1 to 3, characterized in that, The supporting main beam (2) is slidably connected to two traveling blocks (401), the two traveling blocks (401) are spaced apart, and the two traveling blocks (401) are fixedly connected by a connecting rod.

5. The secondary lining trolley for tunnels with steep longitudinal slopes according to claim 1, characterized in that, The support assembly (3) also includes a plurality of straight struts (302), which are spaced apart on the main support beam (2). The straight struts (302) are connected to the second lifting structure (303). When the movement is performed, the straight struts (302) are separated from the ground.

6. The secondary lining trolley for tunnels with steep longitudinal slopes according to claim 5, characterized in that, The support assembly (3) also includes a diagonal brace (304), which is disposed on one side of the straight brace (302). One end of the diagonal brace (304) is hinged to the second lifting structure (303). When the movement is performed, the diagonal brace (304) is detached from the ground.

7. The secondary lining trolley for tunnels with steep longitudinal slopes according to claim 1, characterized in that, A transverse drive structure is provided on the main support beam (2), the transverse drive structure is connected to the support column (301), and the movement direction of the transverse drive structure is perpendicular to the movement direction of the traveling mechanism (4).

8. The secondary lining trolley for tunnels with steep longitudinal slopes according to any one of claims 1-3, 5, 6, and 7, characterized in that, The frame (1) is equipped with an anti-slip assembly (5), which includes a traction ring (501) and a wire rope disposed on the supporting main beam (2). One end of the wire rope is fixedly connected to the traction ring (501), and the other end of the wire rope is fixedly connected to a traction device outside the tunnel.

9. The secondary lining trolley for tunnels with steep longitudinal slopes according to any one of claims 1-3, 5, 6, and 7, characterized in that, The frame (1) is provided with a trolley ring flange (6), and a flexible overlap structure (7) is provided on the side of the trolley ring flange (6) facing the lining surface. The flexible overlap structure (7) abuts against the bottom of the template.

10. The secondary lining trolley for tunnels with steep longitudinal slopes according to claim 9, characterized in that, The flexible overlap structure (7) includes an annular tray (701) and an annular rubber plate (702). The annular tray (701) is detachably connected to the trolley ring flange (6). The annular rubber plate (702) is fixedly installed on the end face of the annular tray (701) that abuts against the bottom of the template.

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