Multi-section lining trolley
By designing a multi-section lining trolley, and using a center-aligning translation mechanism and a walking mechanism to achieve cross-sectional changes, the problem of frequent dismantling and lifting of the main body skeleton in the prior art is solved, and construction efficiency and safety are improved.
Patent Information
- Application Number
- CN202411992118.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-07
AI Technical Summary
In tunnel construction, the prior art requires frequent disassembly and hoisting of the main body skeleton when the cross-section of the lining trolley changes, resulting in difficulty in operation, long time and high manual demand.
A multi-section lining trolley is designed, which includes a main body frame, a template mechanism and a walking track. Through the coordination of the center-aligning translation mechanism and the walking mechanism, the cross-sectional change is achieved without the need to disassemble the main body frame.
It improves the efficiency of changing the cross section of the trolley, reduces the demand for labor, simplifies the operation process, and reduces construction costs.
Smart Images
Figure CN119572275A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tunnel construction equipment, and in particular to a multi-section lining trolley. Background Art
[0002] In tunnel construction, in order to prevent the excavated tunnel from collapsing due to its own gravity, reinforced concrete casting is required as the tunnel lining structure, and the lining trolley is an engineering equipment that integrates the functions of template casting, template transportation and template construction. The lining trolley is an indispensable non-standard product for secondary lining in the process of tunnel construction. Especially in the construction of large-span tunnel lining, the step-type lining trolley can effectively improve the construction efficiency.
[0003] This application is a lining project for the main tunnel of a logistics channel. In the design of a tunnel for traffic, multiple sections are usually involved because of the need to consider vehicle entry and exit ramps and widening sections for emergency avoidance. When building a tunnel, the area difference between different sections is large, so multiple trolleys of different sizes are required. In the prior art, when the cross-section of a lining tunnel increases, one method is to directly dismantle the original main tunnel trolley and build a large-span trolley; another method is to deform and splice the original main tunnel trolley to adapt to the large section.
[0004] However, the main frame of the trolley needs to bear a large load and is therefore heavy. Both methods require the use of large lifting equipment to dismantle and install the main frame of the trolley. However, the lifting height in the tunnel is limited, the operation is difficult, and each replacement takes a long time and consumes a lot of manpower, so it needs to be improved. Summary of the invention
[0005] In order to improve the efficiency of trolley cross-section change and reduce the demand for manpower, the present application provides a multi-section lining trolley.
[0006] The multi-section lining trolley provided in this application adopts the following technical solution: In the first aspect, the multi-section lining trolley comprises a main frame and a template mechanism, wherein the template mechanism comprises a top template part and a side template part, a top template frame body is arranged on the top of the main frame, the top template part is mounted on the top template frame body, and the side template parts are mounted on both sides of the main frame; a supporting mechanism for supporting the template is also mounted on the main frame; It also includes a walking track embedded in the working surface, a walking mechanism is slidably arranged on the walking track, a centering translation mechanism is arranged on the walking mechanism, and the centering translation mechanism is connected to the main frame; the multi-section lining trolley includes three combination forms, which are respectively used for lining the main tunnel section, the large span I section and the large span II section, and the main frame realizes section changes through the cooperation of the walking track, the walking mechanism and the centering translation mechanism.
[0007] By adopting the above technical solution, this application is a lining project for the main line tunnel of the logistics channel. In the design of the tunnel for traffic, it is necessary to consider the vehicle inlet and outlet ramps and the widening section for emergency avoidance. In this embodiment, the initial form of the lining trolley is adapted to the large span II section, and it is laterally narrowed to adapt to the large span I section when it is constructed to the middle section, and finally the section is reduced to adapt to the main tunnel section. In this process, there is no need to hoist and dismantle the main frame, which improves the efficiency of the trolley section change and reduces the demand for labor.
[0008] Optionally, the main frame includes four portal frames, and the four portal frames are arranged in a row or in pairs; a plurality of first connecting members and a second connecting member are provided on the portal frames, and the first connecting member is arranged between two adjacent portal frames, and the two ends of the first connecting member are respectively movably connected to the two adjacent portal frames; the second connecting member is arranged at the corner of one of the portal frames and is connected to another adjacent portal frame, and the two portal frames are rotatably connected through the second connecting member.
[0009] By adopting the above technical solution, in the initial state, the four portal frames are arranged side by side in pairs, the two portal frames on the same side are connected by a first connecting piece, and the two portal frames in the same row are also connected by a first connecting piece. When moving to the main tunnel section, the operator installs the second connecting piece between the portal frames on both sides, and removes the two first connecting pieces between the portal frames on both sides, so that the portal frames on both sides are separated, but the two portal frames on each side are still connected. After preparation, the two portal frames on one side are driven by the walking mechanism to perform circular motion with the second connecting piece as the center until the four portal frames are arranged in a row. The second connecting piece is removed, and the first connecting piece is installed to connect the two moved portal frames with the original two portal frames. The efficiency of the trolley cross-section change is improved by the deformation and reorganization of the four portal frames.
[0010] Optionally, the walking mechanism includes eight stepping moving platforms, and a stepping moving platform is respectively arranged on both sides of each of the gantry; the stepping moving platform is installed with a first support member, a second support member, a stepping drive member, a stepping rod and a stepping block, and the first support member is fixedly installed on the stepping moving platform; the stepping rod is installed on the side wall of the stepping moving platform, the stepping block is slidably matched with the stepping rod, the stepping drive member is installed on the side wall of the stepping moving platform, the output end of the stepping drive member is connected to the stepping block, and the second support member is installed on the stepping block.
[0011] By adopting the above technical solution, when the portal frame is stationary for lining, the first support member and the second support member jointly support the weight of the portal frame and the template. When the portal frame needs to move, the second support member is first retracted, and the stepping drive member drives the stepping block to move forward along the stepping rod to the front end of the stepping rod, and the second support member extends to support. At this time, the first support member is retracted, the stepping drive member is retracted, and the portal frame moves forward relative to the first support member. During the movement, the stepping block returns to the tail end of the stepping rod.
[0012] Optionally, the fixed end of the second support member is rotatably connected to the stepping block via a bearing; a flange is installed at the bottom end of the portal frame, a rotating seat is installed on the stepping moving platform, the flange and the rotating seat are rotatably connected via a bearing, a fixing ring is fixedly installed on the outer peripheral wall of the rotating seat, and the fixing ring can be connected to the flange via bolts.
[0013] By adopting the above technical solution, when the portal frame moves in a straight line, the fixing ring and the flange are fixedly connected by bolts, so that the stepping moving platform is fixedly connected to the portal frame, increasing the connection strength and reducing the deviation of the stepping moving platform during the movement. When the portal frame needs to rotate, the operator unscrews the bolts and ensures that the bearings between the flange and the rotating seat are fully lubricated; the stepping drive drives the stepping block to retract, and at the same time, the stepping rod and the stepping block rotate with the second support member as the axis, and the stepping moving platform also rotates to drive the portal frame to rotate.
[0014] Optionally, the self-aligning translation mechanism is installed on the stepping moving platform, and the self-aligning translation mechanism includes a translation slide rail and a translation driving member. The translation slide rail is fixedly installed on the top wall of the stepping moving platform, and a groove matching the translation slide rail is opened on the bottom wall of the rotating seat, and the rotating seat and the translation slide rail are slidably matched; the translation driving member is installed on the stepping moving platform, and the output end of the translation driving member is connected to the rotating seat; a wing plate is also installed on the outer peripheral wall of the rotating seat, and the wing plate can be connected to the stepping moving platform by bolts.
[0015] By adopting the above technical solution, when the position of the portal frame needs to be adjusted horizontally, the stepping mobile platform is first returned to the normal position so that the length direction of the translation track is perpendicular to the length direction of the tunnel. The operator unscrews the bolts on the wing plate and the stepping mobile platform, starts the translation drive, and the translation drive controls the two rotating seats on the same portal frame to move horizontally at the same time, so that the center of the four portal frames and the center of the template are consistent with the center of the tunnel. After the adjustment is completed, the wing plate is connected to the stepping mobile platform by bolts to improve the connection strength.
[0016] Optionally, the walking track includes a first linear track, a second linear track and a third linear track which are parallel to each other, and also includes an auxiliary track for assisting the trolley to change its cross-section; the first linear track and the second linear track are side by side and parallel to each other, the third linear track is on the extension line of the first linear track, one end of the auxiliary track is connected to the second linear track, and the other end is connected to the third linear track.
[0017] Optionally, a sliding member is provided on the step moving platform, and the step moving platform slides with the track through the sliding member; the sliding member includes an I-beam steel plate, a connecting groove plate, a load-bearing bearing rod, a load-bearing bearing ring and a reinforcement block; the I-beam steel plate is welded and installed on the bottom wall of the step moving platform, the connecting groove plate is installed on the side wall of the I-beam steel plate away from the step moving platform, an axial hole is opened at the bottom of the side wall of the connecting groove plate, the load-bearing bearing rod is inserted in the axial hole, the load-bearing bearing ring is rotatably connected to the load-bearing bearing rod through a bearing, and the load-bearing bearing ring falls between the side plates on both sides of the channel steel; the length direction of the load-bearing bearing rod is parallel to the length direction of the I-beam steel plate, and the two ends of the load-bearing bearing rod in the length direction protrude from the side walls of the connecting groove plate, the diameter of the part of the load-bearing bearing rod protruding from the connecting groove plate is enlarged, and the outer peripheral wall of the part of the load-bearing bearing rod protruding from the connecting groove plate is abutted against the top walls of the side plates on both sides of the channel steel.
[0018] By adopting the above technical solution, when the portal frame moves along the track, the load-bearing bearing rod and the load-bearing bearing ring jointly support the weight of the portal frame. The distance between the first linear track and the second linear track determines the distance between the portal frames on both sides. When the portal frame needs to rotate, the load-bearing bearing ring moves to the intersection of the second linear track and the auxiliary track, and the operator manually rotates the stepping moving platform and drives the load-bearing bearing ring from the second linear track to the auxiliary track through the auxiliary traction tool. Under the action of the first support member, the second support member and the stepping drive member, the load-bearing bearing ring is driven to move along the inner wall of the auxiliary track to drive the two portal frames located above the second linear track to step and rotate with the second connecting member as the center. Until the two portal frames are in contact with the other two portal frames, and are connected and reinforced by the first connecting member.
[0019] Optionally, the first connecting member includes a frame brace and a frame diagonal brace, and both ends of the frame brace in the length direction are respectively connected to two adjacent portal frames by bolts; one end of the frame diagonal brace is connected to the portal frame by bolts, and the other end is connected to the frame brace by bolts.
[0020] Optionally, the second connecting member includes a first connecting rod, a second connecting rod, an upper turntable, a lower turntable and an axial support, the first connecting rod and the second connecting rod are respectively connected to two adjacent portal frames, the upper turntable and the lower turntable are respectively installed at one end of the first connecting rod and the second connecting rod close to each other, the upper turntable and the lower turntable are rotatably connected by a ball joint swivel; the axial support is installed on the bottom wall of the lower turntable.
[0021] By adopting the above technical solution, the length of the frame brace is set according to the distance between the portal frames on both sides, and the frame brace and the frame diagonal brace are cut and made on site by the operator. When the portal frame moves in a straight line, the first connecting rod and the second connecting rod need to be removed to avoid affecting the installation of the template. The length of the first connecting rod and the second connecting rod is set according to the data obtained by on-site measurement, and is also cut and made on site by the operator to improve the rotation accuracy of the portal frame.
[0022] In the second aspect, a method for changing the cross-section of a multi-section lining trolley comprises the following steps: S1, the walking mechanism drives four portal frames to move in pairs side by side along the first straight track and the second straight track respectively for lining; S2. When the cross section needs to be changed, the template mechanism is disassembled and stored; S3, release the two first connecting pieces located in the middle of the portal frame in the width direction, so that the portal frames located on both sides are separated, but the two portal frames on each side are still connected, and then the four portal frames are driven to return to the center by the self-aligning translation mechanism; S4, the walking mechanism drives the two gantry frames on one side to perform circular motion with the second connecting piece as the center, until the stepping moving platforms on the two gantry frames move from the second linear track to the auxiliary track, and then move from the auxiliary track to the third linear track. At this time, the four gantry frames are arranged along the length direction of the first linear track; S5, connecting the four portal frames through the first connecting piece, adjusting the top form frame and installing the formwork mechanism; S6, the walking mechanism drives the two portal frames on the first linear track to move to the third linear track; S7. The self-aligning translation mechanism drives the centers of the four connected portal frames to be consistent with the center of the tunnel; the walking mechanism drives the four portal frames to move step by step along the third straight track for lining.
[0023] By adopting the above technical solution, before the lining trolley enters the tunnel, the first linear track and the second linear track are pre-buried in the working surface. The on-site construction personnel install the four portal frames side by side on the track by lifting tools, drive the portal frames to center by the translation drive, and fix the four portal frames by the frame brace and frame diagonal brace. After the main frame is installed, the top formwork frame and the template are installed. Under the action of the first support member, the second support member and the stepping drive member, the load-bearing bearing ring is driven to move along the inner wall of the track to drive the template to move in a straight line. When the width of the trolley needs to be reduced, the frame brace and the frame diagonal brace are removed, the trolley is translated and replaced with new frame brace and frame diagonal brace. When the trolley moves to the main tunnel section, the third linear track and the auxiliary track are pre-buried in advance and smoothly connected to the first linear track and the second linear track. Remove the template, release the connection between the fixing ring and the flange and the connection between the wing plate and the stepping mobile platform, install the first connecting rod and the second connecting rod, and place the axis support at the center of the gantry rotation by measurement. The stepping mobile platform is rotated to move the load-bearing bearing ring from the second linear track to the auxiliary track and move along the inner wall of the auxiliary track. The portal frame rotates with the assistance of the auxiliary track and the axis support, which improves the accuracy of the portal frame rotation. In addition, less labor is required during the section change process, which improves the efficiency of the section change.
[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Before the lining trolley enters the tunnel, the first linear track and the second linear track are pre-buried in the working surface. The on-site construction personnel install the four portal frames side by side on the track through the lifting tools, drive the portal frames to center through the translation drive, and fix the four portal frames through the frame brace and frame diagonal brace. After the main frame is installed, the top formwork frame and the template are installed. Under the action of the first support, the second support and the stepping drive, the load-bearing bearing ring is driven to move along the inner wall of the track to drive the template to move in a straight line. When the width of the trolley needs to be reduced, the frame brace and the frame diagonal brace are removed, the trolley is translated and replaced with new frame brace and frame diagonal brace. When the trolley moves to the main tunnel section, the third linear track and the auxiliary track are pre-buried in advance and smoothly connected to the first linear track and the second linear track. Remove the template, release the connection between the fixing ring and the flange and the connection between the wing plate and the stepping mobile platform, install the first connecting rod and the second connecting rod, and place the axis support at the center of the gantry rotation by measurement. The stepping mobile platform is rotated to move the load-bearing bearing ring from the second linear track to the auxiliary track and move along the inner wall of the auxiliary track. The portal frame rotates with the assistance of the auxiliary track and the axis support, which improves the accuracy of the portal frame rotation. In addition, less labor is required during the section change process, which improves the efficiency of the section change. ; 2. When the portal frame moves along the track, the load-bearing bearing rod and the load-bearing bearing ring jointly support the weight of the portal frame. The distance between the first linear track and the second linear track determines the distance between the portal frames on both sides. When the portal frame needs to rotate, the load-bearing bearing ring moves to the intersection of the second linear track and the auxiliary track, and the operator manually rotates the stepping moving platform and drives the load-bearing bearing ring from the second linear track to the auxiliary track through the auxiliary traction tool. Under the action of the first support member, the second support member and the stepping drive member, the load-bearing bearing ring is driven to move along the inner wall of the auxiliary track to drive the two portal frames located above the second linear track to step and rotate with the second connecting member as the center. Until these two portal frames are in contact with the other two portal frames, and are connected and reinforced by the first connecting member; 3. The length of the frame brace is set according to the distance between the portal frames on both sides. The frame brace and frame diagonal brace are cut and made on site by the operator. When the portal frame moves in a straight line, the first connecting rod and the second connecting rod need to be removed to avoid affecting the installation of the template. The length of the first connecting rod and the second connecting rod is set according to the data obtained by on-site measurement, and is also cut and made on site by the operator to improve the accuracy of the portal frame rotation. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic structural diagram of a multi-section lining trolley according to an embodiment of the present application.
[0026] Figure 2 It is a schematic diagram of the structure of the portal frame according to an embodiment of the present application.
[0027] Figure 3 It is a structural schematic diagram of the walking mechanism of an embodiment of the present application.
[0028] Figure 4 It is a schematic diagram of the structure of the walking mechanism and the centering translation mechanism of the embodiment of the present application.
[0029] Figure 5 It is a schematic diagram of the structure of the walking track of an embodiment of the present application.
[0030] Figure 6 It is a schematic diagram of the structure of the sliding member of the embodiment of the present application.
[0031] Figure 7 It is a schematic diagram of the structure of the first connecting member of the embodiment of the present application.
[0032] Figure 8 It is a schematic diagram of the structure of the second connecting member of the embodiment of the present application.
[0033] Description of reference numerals: 1. main frame; 11. top mold frame; 12. door frame; 2. template mechanism; 21. top mold part; 22. side mold part; 3. support mechanism; 4. walking track; 41. first linear track; 42. second linear track; 43. third linear track; 44. auxiliary track; 5. walking mechanism; 51. first support member; 52. second support member; 53. stepping moving platform; 54. stepping driving member; 55. stepping rod; 56. stepping block; 57. flange; 58 , rotating seat; 581, fixing ring; 582, wing plate; 6, self-aligning translation mechanism; 61, translation slide rail; 62, translation drive member; 7, first connecting member; 71, frame brace; 72, frame diagonal brace; 8, second connecting member; 81, first connecting rod; 82, second connecting rod; 83, upper turntable; 84, lower turntable; 85, axial support; 9, sliding member; 91, I-beam plate; 92, connecting groove plate; 93, load-bearing bearing rod; 94, load-bearing bearing ring; 95, reinforcement block; 96, shaft hole. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-8 This application is described in further detail.
[0035] The embodiment of the present application discloses a multi-section lining trolley. Figure 1 and Figure 2 The multi-section lining trolley includes a main frame 1 for support. The main frame 1 is the main load-bearing component of the trolley, so it is required to have high strength and rigidity to meet the load-bearing requirements during concrete lining. A formwork mechanism 2 is installed on the main frame 1. The formwork mechanism 2 includes a top form part 21 and a side form part 22. The side form part 22 is installed on both sides of the main frame 1. A top form frame body 11 is arranged on the top of the main frame 1, and the top form part 21 is installed on the top form frame body 11. A supporting mechanism 3 for supporting the top form part 21 and the side form part 22 is also installed on the main frame 1. A walking mechanism 5 for realizing the movement of the main frame 1 is arranged at the bottom of the main frame 1, and a centering translation mechanism 6 for driving the main frame 1 to move laterally is arranged on the walking mechanism 5.
[0036] This application is a lining project for the main tunnel of a logistics channel. In the design of the tunnel, it is necessary to consider the vehicle inlet and outlet ramps and the widening section for emergency avoidance. The multi-section lining trolley includes three combination forms, which are used for lining the main tunnel section, the large span I section and the large span II section respectively. The main frame 1 realizes the change of section through the cooperation of the walking mechanism 5 and the centering translation mechanism 6. In this embodiment, the initial form of the lining trolley is adapted to the large span II section, and it is laterally narrowed to adapt to the large span I section when it is constructed to the middle section, and finally the section is reduced to adapt to the main tunnel section.
[0037] Reference Figure 1 and Figure 2The formwork mechanism 2 is mainly composed of a panel, an arch plate, a rib plate inside the formwork, and an angle iron inside the formwork. The formwork is divided into 4 sections longitudinally, each section is 1.5m. The formworks are connected by bolts and positioned by locating pins. A capping pipe connected to a delivery pump is installed on the top of the formwork. The formwork is the main working surface of the trolley, so it is required to be careful not to damage the surface of the formwork during manufacturing, transportation, and installation to ensure the quality of the concrete lining. In order to ensure the integrity of the formwork, multiple through beams are provided on the inside of the formwork.
[0038] The top formwork frame 11 is mainly composed of hanging beams, hanging beam columns, and platform beams. The top formwork frame 11 mainly bears the weight of the upper concrete machine template during pouring. This frame supports the template on the top and transmits force to the main frame 1 at the bottom. The top formwork frame 11 is supported by two main platform beams and connected to the template through hanging beams and hanging beam columns. The side formwork through beam is made of double-piece 18b# I-shaped steel.
[0039] The support mechanism 3 includes a side form support screw and a ground support screw. The side form support screw is installed between the side form through beam and the portal frame 12 to support and adjust the template positioning and withstand the lateral pressure generated when pouring concrete. The lateral pressure generated when pouring concrete passes through the ground support screw system, so that the template and the main frame form a closed force support ring, thereby improving the overall force condition of the template trolley and enhancing the stability of the side form.
[0040] Reference Figure 1 and Figure 2 The main frame 1 includes four portal frames 12, which are formed into a whole by bolting and welding the portal beam, the column and the bottom longitudinal beam. The longitudinal beam is connected by bolts, and the columns are connected by scissor braces. The main structural parts are welded by steel plates. The columns are welded into I-beam sections by steel plates, and the bottom longitudinal beams are welded into box sections by steel plates.
[0041] Four portal frames 12 can be arranged along the thickness direction to match the main tunnel section; four portal frames 12 can be arranged side by side along the thickness direction to match the large span II section or the large span I section. A plurality of first connecting members 7 and a second connecting member 8 are provided on the portal frame 12. The first connecting member 7 is provided between two adjacent portal frames 12. Both ends of the first connecting member 7 are movably connected to the two adjacent portal frames 12. The second connecting member 8 is provided at a corner of one of the portal frames 12 and connected to another adjacent portal frame 12. The two portal frames 12 are rotatably connected through the second connecting member 8.
[0042] In the initial state, the four portal frames 12 are arranged side by side in pairs, and the two portal frames 12 on the same side are connected by a first connecting member 7, and the two portal frames 12 in the same row are also connected by a first connecting member 7, totaling four first connecting members 7. When moving to the main tunnel section, the operator installs the second connecting member 8 between the portal frames 12 on both sides, and removes the two first connecting members 7 between the portal frames 12 on both sides, so that the portal frames 12 on both sides are separated, but the two portal frames 12 on each side are still connected. After preparation, the two portal frames 12 on one side are driven by the walking mechanism 5 to perform circular motion with the second connecting member 8 as the center until the four portal frames 12 are arranged in a row. The second connecting member 8 is removed, and the first connecting member 7 is installed to connect the two moved portal frames 12 with the original two portal frames 12, at this time totaling three first connecting members 7.
[0043] Reference Figure 3 and Figure 4 The walking mechanism 5 includes eight stepping moving platforms 53, and a stepping moving platform 53 is respectively provided at the bottom of both sides of each gantry frame 12. In order to realize the rotation of the gantry frame 12, a flange 57 is installed at the bottom end of the gantry frame 12 by welding, and a rotating seat 58 is installed on the top wall of the stepping moving platform 53. The flange 57 and the rotating seat 58 are rotatably connected through a bearing. A fixing ring 581 is fixedly installed on the outer peripheral wall of the rotating seat 58 by welding, and matching screw holes are opened on the fixing ring 581 and the flange 57, and the fixing ring 581 can be connected to the flange 57 by bolts.
[0044] When the gantry 12 moves in a straight line, the fixing ring 581 is fixedly connected to the flange 57 by bolts, so that the stepping moving platform 53 is fixedly connected to the gantry 12, increasing the connection strength and reducing the deviation of the stepping moving platform 53 during the movement. When the gantry 12 needs to rotate, the operator unscrews the bolts and ensures that the bearings between the flange 57 and the rotating seat 58 are fully lubricated.
[0045] Reference Figure 3 and Figure 4, the centering translation mechanism 6 is installed on the stepping mobile platform 53, and the centering translation mechanism 6 includes a translation rail 61, which is fixedly installed on the top wall of the stepping mobile platform 53 by bolts, and the translation rail 61 is arranged horizontally along the tunnel. A groove adapted to the translation rail 61 is provided on the bottom wall of the rotating seat 58, and the rotating seat 58 slides with the translation rail 61. A translation driving member 62 is installed on the top wall of the stepping mobile platform 53. The translation driving member 62 in this application is a hydraulic cylinder, and the shell of the translation driving member 62 is installed on the stepping mobile platform 53 by bolts. The output end of the translation driving member 62 is connected to the rotating seat 58 to drive the rotating seat 58 to move along the length direction of the translation rail 61. A wing plate 582 is also installed on the outer peripheral wall of the rotating seat 58, and matching screw holes are provided on the wing plate 582 and the stepping mobile platform 53, and the wing plate 582 can be connected to the stepping mobile platform 53 by bolts.
[0046] When the position of the portal frame 12 needs to be adjusted laterally, the stepping mobile platform 53 is first returned to the normal position so that the length direction of the translation track is perpendicular to the length direction of the tunnel. The operator unscrews the bolts on the wing plate 582 and the stepping mobile platform 53, and starts the translation drive 62. The translation drive 62 controls the two rotating seats 58 on the same portal frame 12 to move laterally at the same time, so that the center of the four portal frames 12 and the center of the template are consistent with the center of the tunnel. After the adjustment is completed, the wing plate 582 is connected to the stepping mobile platform 53 by bolts to improve the connection strength.
[0047] Reference Figure 3 , a first support member 51 is installed on the stepping mobile platform 53, the shell of the first support member 51 is installed on the side wall of the stepping mobile platform 53 by bolts, the first support member 51 is arranged vertically, and a supporting foot for increasing the contact area is installed at the bottom end of the movable end of the first support member 51. A stepping rod 55 is installed on the side wall of the stepping mobile platform 53 away from the first support member 51 by bolts, and the length direction of the stepping rod 55 is arranged parallel to the length direction of the tunnel. A stepping block 56 is arranged on the stepping rod 55, and a hole adapted to the stepping rod 55 is opened on the stepping block 56, and the stepping block 56 is slidably connected to the stepping rod 55. A stepping driving member 54 is installed on the side wall of the stepping mobile platform 53 by bolts, and the stepping driving member 54 is installed on the side of the stepping rod 55 close to the first support member 51, and the output end of the stepping driving member 54 is connected to the stepping block 56. The bottom of the stepping block 56 is provided with a second support member 52, which is arranged vertically, and the housing of the second support member 52 is rotatably connected to the bottom wall of the stepping block 56 through a bearing. In this embodiment, the first support member 51, the second support member 52 and the stepping drive member 54 are all hydraulic cylinders.
[0048] When the portal frame 12 is stationary for lining, the first support member 51 and the second support member 52 jointly support the weight of the portal frame 12 and the template. When the portal frame 12 needs to move, the second support member 52 is first retracted, and the stepping drive member 54 drives the stepping block 56 to move forward along the stepping rod 55 to the front end of the stepping rod 55, and the second support member 52 extends for support. At this time, the first support member 51 is retracted, and the stepping drive member 54 is retracted, so that the portal frame 12 moves forward relative to the first support member 51, and the stepping block 56 returns to the tail end of the stepping rod 55 during the movement.
[0049] When the gantry 12 rotates, the stepping driving member 54 drives the stepping block 56 to retract, and at the same time the stepping rod 55 and the stepping block 56 rotate with the second supporting member 52 as the axis, and the stepping moving platform 53 also rotates to drive the gantry 12 to rotate.
[0050] Reference Figure 5 and Figure 6 In order to improve the accuracy of movement and rotation of the portal frame 12, a walking track 4 is embedded on the working surface. The walking track 4 includes a first linear track 41, a second linear track 42 and a third linear track 43 which are parallel to each other, and also includes an auxiliary track 44 for assisting the trolley to change the cross-section. The first linear track 41 and the second linear track 42 are side by side and parallel to each other. The third linear track 43 is on the extension line of the first linear track 41, and one end of the auxiliary track 44 is connected to the second linear track 42, and the other end is connected to the third linear track 43. The tracks are all channel steels laid on the working surface. A sliding member 9 is provided at the bottom end of the stepping mobile platform 53, and the stepping mobile platform 53 slides with the track through the sliding member 9.
[0051] Reference Figure 6 The sliding member 9 includes an I-shaped steel plate 91, which is welded and installed on the bottom wall of the stepping moving platform 53. A connecting slot plate 92 is welded and installed at the bottom end of the I-shaped steel plate 91, and a reinforcing block 95 is welded and installed at the connection between the connecting slot plate 92 and the I-shaped steel plate 91. An axial hole 96 is opened at the bottom of the side wall of the connecting slot plate 92, and a load-bearing bearing rod 93 is inserted into the axial hole 96. The load-bearing bearing rod 93 is rotatably connected to the connecting slot plate 92. A load-bearing ring 94 is sleeved on the middle part of the load-bearing rod 93, and the load-bearing ring 94 is rotatably connected to the load-bearing rod 93 through a bearing. The load-bearing ring 94 falls between the side plates on both sides of the channel steel. The length direction of the load-bearing rod 93 is parallel to the length direction of the I-beam plate 91. The two ends of the load-bearing rod 93 in the length direction protrude and connect to the side walls of the groove plate 92. The diameter of the part of the load-bearing rod 93 protruding from the groove plate 92 is enlarged, and the outer peripheral wall of the part of the load-bearing rod 93 protruding from the groove plate 92 is against the top wall of the side plates on both sides of the channel steel.
[0052] When the portal frame 12 moves along the track, the load-bearing bearing rod 93 and the load-bearing bearing ring 94 jointly support the weight of the portal frame 12. The distance between the first linear track 41 and the second linear track 42 determines the distance between the portal frames 12 on both sides. When the portal frame 12 needs to rotate, the load-bearing bearing ring 94 moves to the intersection of the second linear track 42 and the auxiliary track 44, and the operator manually rotates the stepping moving platform 53, and drives the load-bearing bearing ring 94 from the second linear track 42 to the auxiliary track 44 through the auxiliary traction tool. Under the action of the first support member 51, the second support member 52 and the stepping drive member 54, the load-bearing bearing ring 94 is driven to move along the inner wall of the auxiliary track 44 to drive the two portal frames 12 located above the second linear track 42 to step and rotate with the second connecting member 8 as the center. Until then, the two portal frames 12 are abutted against the other two portal frames 12 and are connected and reinforced by the first connecting member 7.
[0053] Reference Figure 7 and Figure 8 The first connecting member 7 includes a frame brace 71 and a frame diagonal brace 72. The two ends of the frame brace 71 in the length direction are respectively connected to two adjacent portal frames 12 by bolts; one end of the frame diagonal brace 72 is connected to the portal frame 12 by bolts, and the other end is connected to the frame brace 71 by bolts. The second connecting member 8 includes a first connecting rod 81 and a second connecting rod 82. The first connecting rod 81 and the second connecting rod 82 are respectively connected to two adjacent portal frames 12 by bolts. The ends of the first connecting rod 81 and the second connecting rod 82 close to each other are bolted with an upper turntable 83 and a lower turntable 84. The upper turntable 83 and the lower turntable 84 are rotatably connected by a ball joint swivel. A vertical rod is installed on the bottom wall of the lower turntable 84, and an axial support 85 is installed at the bottom end of the vertical rod. The axial support 85 is a hydraulic cylinder, and the axial support 85 is concentric with the upper turntable 83 and the lower turntable 84.
[0054] The length of the frame brace 71 is set according to the distance between the portal frames 12 on both sides. The frame brace 71 and the frame diagonal brace 72 are cut and made on site by the operator. When the portal frame 12 moves in a straight line, the first connecting rod 81 and the second connecting rod 82 need to be removed to avoid affecting the installation of the template. The length of the first connecting rod 81 and the second connecting rod 82 is set according to the data obtained by on-site measurement, and is also cut and made on site by the operator to improve the rotation accuracy of the portal frame 12.
[0055] The implementation principle of the multi-section lining trolley of the embodiment of the present application is as follows: before the lining trolley enters the tunnel, the first linear track 41 and the second linear track 42 are pre-buried in the working surface, and the on-site construction personnel install the four portal frames 12 side by side on the track by means of lifting tools, drive the portal frames 12 to be centered by means of the translation drive 62, and fix the four portal frames 12 by means of the frame support 71 and the frame diagonal support 72. After the main frame 1 is installed, the top formwork frame 11 and the template are installed. Under the action of the first support member 51, the second support member 52 and the stepping drive member 54, the load-bearing bearing ring 94 is driven to move along the inner wall of the track to drive the template to move in a straight line. When the width of the trolley needs to be reduced, the frame support 71 and the frame diagonal support 72 are removed, the trolley is translated and replaced with new frame support 71 and frame diagonal support 72. When the trolley moves to the main tunnel section, the third linear track 43 and the auxiliary track 44 are pre-buried in advance and smoothly connected with the first linear track 41 and the second linear track 42. Remove the template, release the connection between the fixing ring 581 and the flange 57, and the connection between the wing plate 582 and the stepping mobile platform 53, install the first connecting rod 81 and the second connecting rod 82, and place the shaft support 85 at the center of the rotation of the portal frame 12 by measurement. Rotate the stepping mobile platform 53 to move the load-bearing bearing ring 94 from the second linear track 42 to the auxiliary track 44, and move along the inner wall of the auxiliary track 44. The portal frame 12 rotates with the assistance of the auxiliary track 44 and the shaft support 85, which improves the accuracy of the rotation of the portal frame 12. In addition, less labor is required during the cross-section change process, which improves the efficiency of the cross-section change.
[0056] The embodiment of the present application also discloses a method for changing the cross-section of a multi-section lining trolley, comprising the following steps: S1. Before installation, ensure that the ground is hardened and the strength meets the requirements, the ground is level and neat, without obvious bumps, and the first linear track 41 and the second linear track 42 are pre-buried in the working surface. On-site construction personnel use lifting tools to install four portal frames 12 side by side on the track, release the tunnel center line according to the design dimensions, and drive the portal frame 12 and the center line of the template to coincide with the tunnel center line through the translation drive 62. According to the requirements of the trolley center distance, the front and back and left and right height differences are less than 5mm, and the center line coincides with the tunnel center line as much as possible, with an error of less than 15mm. The four portal frames 12 are fixedly connected by the frame brace 71 and the frame diagonal brace 72. Under the action of the first support member 51, the second support member 52 and the stepping drive member 54, the load-bearing bearing ring 94 is driven to move along the inner wall of the track to drive the template to move in a straight line for lining; S2. After moving to the position where the section needs to be changed, the left main tunnel second lining trolley will complete the construction of the last set of arch walls and blocking walls, and then remove the large and small side molds at the original position. When removing, first use the horizontal cylinder and screw to lean the large and small side molds against the arch wall, first remove the small side mold, and then remove the large side mold. Then move the trolley to the large span assembly position after the site measurement and placement. After the large side mold is removed, 4 pieces need to be retained on each side, stacked neatly, and used when assembling the large span trolley. After the left main tunnel trolley moves to the assembly position, use the winch and the pulley pre-buried in the arch to remove the top mold. First, lift the top mold and leave it 20 cm away from the trolley's hanging beam column, then move the trolley longitudinally to get out of the top mold descending range, control the winch to lower the top mold to the ground, and finally use the excavator to move the template to the storage place and stack it neatly. After the template is removed, continue to remove the hanging beam, column and platform beam above the portal frame. And stack these parts neatly nearby so that they can be used again after the subsequent large-span trolley frame is assembled.
[0057] S3, release the frame brace 71 and frame diagonal brace 72 located in the middle of the width direction of the portal frame 12, separate the portal frames 12 on both sides, but the two portal frames 12 on each side are still connected, and then drive the four portal frames 12 to return to the center through the translation drive 62. At this time, the third linear track 43 and the auxiliary track 44 are pre-embedded in advance and smoothly connected with the first linear track 41 and the second linear track 42. Release the connection between the fixing ring 581 and the flange 57 and the connection between the wing plate 582 and the stepping mobile platform 53, install the first connecting rod 81 and the second connecting rod 82, and place the axis support 85 at the center of the rotation of the portal frame 12 by measurement.
[0058] S4, rotate the stepping moving platform 53 to move the load-bearing bearing ring 94 from the second linear track 42 to the auxiliary track 44, and move along the inner wall of the auxiliary track 44. The portal frame 12 rotates with the assistance of the auxiliary track 44 and the axial support 85 until the stepping moving platforms 53 on the two portal frames 12 move from the second linear track 42 to the auxiliary track 44, and then move from the auxiliary track 44 to the third linear track 43, so that the four portal frames 12 are arranged along the length direction of the first linear track 41. The center line of the portal frame 12 and the template is driven by the translation drive 62 to coincide with the center line of the tunnel.
[0059] S5. Connect the four portal frames 12 into a whole through the frame brace 71 and the frame diagonal brace 72, disassemble and assemble the hanging beam column to be replaced, that is, the hanging beam extension section, and temporarily support the top mold before disassembly. After the hanging beam extension section is replaced, the template is controlled to descend to the hanging beam column through the template adjustment cylinder, and the bolts are tightened. After the bolts of the template and the hanging beam column are tightened, the top mold is installed using a jack.
[0060] S6. Under the action of the first support member 51, the second support member 52 and the stepping drive member 54, the load-bearing bearing ring 94 is driven to move along the inner wall of the track to drive the two portal frames 12 on the first linear track 41 to move to the third linear track 43; S7. Under the action of the first support member 51, the second support member 52 and the stepping drive member 54, the four portal frames 12 are driven to move step by step along the third linear track 43 to perform lining.
[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. Multi-section lining trolley, characterized by: The invention comprises a main frame (1) and a template mechanism (2), wherein the template mechanism (2) comprises a top template part (21) and a side template part (22), a top template frame (11) is arranged on the top of the main frame (1), the top template part (21) is mounted on the top template frame (11), and the side template parts (22) are mounted on both sides of the main frame (1); a support mechanism (3) for supporting the template is also mounted on the main frame (1); It also includes a walking track (4) pre-buried on the working surface, a walking mechanism (5) is slidably arranged on the walking track (4), a centering translation mechanism (6) is arranged on the walking mechanism (5), and the centering translation mechanism (6) is connected to the main frame (1); the multi-section lining trolley includes three combination forms, which are respectively used for lining the main tunnel section, the large span I section and the large span II section, and the main frame (1) realizes section change through the cooperation of the walking track (4), the walking mechanism (5) and the centering translation mechanism (6).
2. The multi-section lining trolley according to claim 1, characterized in that: The main frame (1) comprises four portal frames (12), and the four portal frames (12) are arranged in a row or in pairs; a plurality of first connecting members (7) and a second connecting member (8) are arranged on the portal frames (12), and the first connecting member (7) is arranged between two adjacent portal frames (12), and the two ends of the first connecting member (7) are respectively movably connected to the two adjacent portal frames (12); the second connecting member (8) is arranged at the corner of one of the portal frames (12) and is connected to another adjacent portal frame (12), and the two portal frames (12) are rotatably connected via the second connecting member (8).
3. The multi-section lining trolley according to claim 2, characterized in that: The walking mechanism (5) comprises eight stepping moving platforms (53), and a stepping moving platform (53) is respectively arranged on both sides of each of the gantry frames (12); a first supporting member (51), a second supporting member (52), a stepping driving member (54), a stepping rod (55) and a stepping block (56) are installed on the stepping moving platform (53), and the first supporting member (51) is fixedly installed on the stepping moving platform (53); the stepping rod (55) is installed on the side wall of the stepping moving platform (53), and the stepping block (56) is slidably matched with the stepping rod (55); the stepping driving member (54) is installed on the side wall of the stepping moving platform (53), and the output end of the stepping driving member (54) is connected to the stepping block (56), and the second supporting member (52) is installed on the stepping block (56).
4. The multi-section lining trolley according to claim 3, characterized in that: The fixed end of the second support member (52) is rotatably connected to the stepping block (56) via a bearing; a flange (57) is installed at the bottom end of the portal frame (12); a rotating seat (58) is installed on the stepping moving platform (53); the flange (57) and the rotating seat (58) are rotatably connected via a bearing; a fixing ring (581) is fixedly installed on the outer peripheral wall of the rotating seat (58); and the fixing ring (581) can be connected to the flange (57) via bolts.
5. The multi-section lining trolley according to claim 4, characterized in that: The centering translation mechanism (6) is installed on the stepping mobile platform (53), and the centering translation mechanism (6) includes a translation rail (61) and a translation driving member (62). The translation rail (61) is fixedly installed on the top wall of the stepping mobile platform (53), and a groove adapted to the translation rail (61) is opened on the bottom wall of the rotating seat (58), and the rotating seat (58) and the translation rail (61) are slidably matched; the translation driving member (62) is installed on the stepping mobile platform (53), and the output end of the translation driving member (62) is connected to the rotating seat (58); a wing plate (582) is also installed on the outer peripheral wall of the rotating seat (58), and the wing plate (582) can be connected to the stepping mobile platform (53) by bolts.
6. The multi-section lining trolley according to claim 4, characterized in that: The travel track (4) comprises a first linear track (41), a second linear track (42) and a third linear track (43) which are parallel to each other, and also comprises an auxiliary track (44) for assisting the trolley to change its cross section; the first linear track (41) and the second linear track (42) are arranged side by side and parallel to each other, the third linear track (43) is on the extension line of the first linear track (41), one end of the auxiliary track (44) is connected to the second linear track (42), and the other end is connected to the third linear track (43).
7. The multi-section lining trolley according to claim 6, characterized in that: The stepping movable platform (53) is provided with a sliding member (9), and the stepping movable platform (53) is slidably matched with the track through the sliding member (9); the sliding member (9) comprises an I-shaped steel plate (91), a connecting groove plate (92), a load-bearing bearing rod (93), a load-bearing bearing ring (94) and a reinforcing block (95); the I-shaped steel plate (91) is welded and mounted on the bottom wall of the stepping movable platform (53), the connecting groove plate (92) is mounted on the side wall of the I-shaped steel plate (91) away from the stepping movable platform (53), the bottom of the side wall of the connecting groove plate (92) is provided with an axial hole (96), and the load-bearing The bearing rod (93) is inserted into the shaft hole (96), and the load-bearing bearing ring (94) is rotatably connected to the load-bearing bearing rod (93) through a bearing, and the load-bearing bearing ring (94) falls between the side plates on both sides of the channel steel; the length direction of the load-bearing bearing rod (93) is parallel to the length direction of the I-beam plate (91), and the two ends of the load-bearing bearing rod (93) in the length direction protrude from the side walls of the connected groove plate (92), the diameter of the part of the load-bearing bearing rod (93) protruding from the connected groove plate (92) is increased, and the outer peripheral wall of the part of the load-bearing bearing rod (93) protruding from the connected groove plate (92) is against the top walls of the side plates on both sides of the channel steel.
8. The multi-section lining trolley according to claim 2, characterized in that: The first connecting member (7) comprises a frame brace (71) and a frame diagonal brace (72); the two ends of the frame brace (71) in the length direction are respectively connected to two adjacent door-type frames (12) by bolts; one end of the frame diagonal brace (72) is connected to the door-type frame (12) by bolts, and the other end is connected to the frame brace (71) by bolts.
9. The multi-section lining trolley according to claim 2, characterized in that: The second connecting member (8) comprises a first connecting rod (81), a second connecting rod (82), an upper turntable (83), a lower turntable (84) and an axial support (85); the first connecting rod (81) and the second connecting rod (82) are respectively connected to two adjacent door frames (12); the upper turntable (83) and the lower turntable (84) are respectively installed at one end of the first connecting rod (81) and the second connecting rod (82) close to each other; the upper turntable (83) and the lower turntable (84) are rotatably connected via a ball joint swivel; the axial support (85) is installed on the bottom wall of the lower turntable (84).
10. The method for changing the cross-section of a multi-section lining trolley according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the walking mechanism (5) drives four portal frames (12) to move in pairs side by side along the first linear track (41) and the second linear track (42) respectively to perform lining; S2. After moving to the position where the cross section needs to be changed, the template mechanism (2) is first disassembled and stored; S3, releasing the two first connecting members (7) located in the middle of the portal frame (12) in the width direction, so that the portal frames (12) located on both sides are separated, but the two portal frames (12) on each side are still connected, and then the four portal frames (12) are driven to return to the center through the centering translation mechanism (6); S4, the walking mechanism (5) drives the two portal frames (12) on one side to perform circular motion with the second connecting member (8) as the center, until the stepping moving platforms (53) on the two portal frames (12) move from the second linear track (42) to the auxiliary track (44), and then move from the auxiliary track (44) to the third linear track (43), at which time the four portal frames (12) are arranged along the length direction of the first linear track (41); the centering translation mechanism (6) drives the centers of the four connected portal frames (12) to be consistent with the center of the tunnel; S5, connecting the four portal frames (12) through the first connecting member (7), adjusting the top formwork frame (11) and installing the formwork mechanism (2); S6, the walking mechanism (5) drives the two portal frames (12) on the first linear track (41) to move to the third linear track (43); S7. The walking mechanism (5) drives the four portal frames (12) to move stepwise along the third linear track (43) to perform lining.