A circumferential rapid cutting device and cutting method for removing secondary lining concrete of a tunnel
By using a trolley frame, arcuate truss and arcuate track structure in the tunnel second lining concrete cutting, combined with hydraulic wall saw equipment and truss tracks, the guide rail length problem in the existing technology is solved, and efficient and precise ring cutting is achieved. Improve construction efficiency and safety.
Patent Information
- Application Number
- CN202010365214.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-30
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2040-04-30
AI Technical Summary
When handling elliptical tunnels, existing tunnel two-lined concrete or reinforced concrete cutting equipment is impermeable due to the long or short guide rails, which increases the problem of low construction efficiency and inconsistent circumcision width.
Using trolley skeleton, arc truss and arc track structures, ring cutting can be completed without dismantling the arc tracks. Cutting is achieved through moving along the arc tracks through hydraulic wall saw equipment, combining truss tracks and screw connections, improving construction efficiency and cutting accuracy.
It realizes that one-time circumcision cutting can be completed without dismantling the arc track, which improves construction efficiency, solves the problem of inconsistent circumcision width, and simplifies the operation process.
Smart Images
Figure CN111590757B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, in particular to a circumferential rapid cutting device and a cutting method for removing a tunnel secondary lining concrete. Background Art
[0002] In the process of development of the transportation industry, the transportation capacity of existing roads in some areas does not match the current actual development situation and needs to be upgraded or the existing projects have common quality problems and need to be repaired and maintained. For highway tunnels, there is a second lining concrete cutting and demolition construction, which is to cut the original second lining reinforced concrete into independent unit blocks and then demolish them in different areas. This effectively reduces the disturbance to the surrounding rock and support structure and improves the safety of demolition.
[0003] At present, the commonly used tunnel secondary lining concrete or reinforced concrete cutting is hydraulic wall saw cutting equipment, which is mainly composed of wall saw guide rails, hydraulic wall saw head, saw blades and fixed rails. Since the tunnel secondary lining profile is elliptical, if the guide rail is too long and the outer distance between the guide rail and the tunnel secondary lining concrete is too large, the concrete in the middle section will not be cut through. If it is too short, the frequency of track removal will increase, which greatly reduces the construction efficiency. At the same time, the tunnel circumferential cutting distance is long, and there may be offset errors in each movement, and there will be problems such as inconsistent circumferential cutting width after cutting. Summary of the invention
[0004] The purpose of the present invention is to provide a circumferential rapid cutting device and cutting method for removing the secondary lining concrete of a tunnel. By setting a trolley frame, an arc truss and an arc track, a circumferential cutting can be completed without removing the arc track, thereby increasing the construction efficiency and solving the problem of inconsistent circumferential cutting width in the same circumferential cutting area.
[0005] The above-mentioned object of the present invention is achieved through the following technical solutions:
[0006] A circumferential rapid cutting device for removing secondary lining concrete of a tunnel comprises a tunnel, a trolley frame, an arc track, an arc truss and a hydraulic wall saw device, wherein the trolley frame is arranged as a door-type structure, the arc truss comprises square steel and angle steel for supporting the square steel, the angle steel is fixedly connected to the trolley frame, the other end of the angle steel is fixedly connected to the square steel, the square steel is arranged as an arc structure, the square steel has the same curvature as the tunnel, the arc track is fixedly connected around the top of the square steel, the arc track has the same curvature as the tunnel, the hydraulic wall saw device is installed on the arc track, and a spacing for installing the hydraulic wall saw device is reserved between the arc track and the tunnel.
[0007] Preferably, a truss track is provided on the trolley frame, the length direction of the truss track is parallel to the length direction of the tunnel, and a truss wheel is provided at the bottom of the arc truss, and the truss wheel is rollingly fitted on the truss track.
[0008] Preferably, an operating platform is fixedly mounted on the top of the trolley frame, the operating platform is arranged horizontally, multiple steps are arranged on both sides of the trolley frame, the multiple steps on both sides are symmetrical about the axis in the length direction of the tunnel, there are multiple truss rails and truss wheels, and the truss rails are arranged on the surface of the operating platform and the plane of the steps.
[0009] Preferably, a plurality of screw rods are passed through the angle steel, a plurality of threaded holes 2 are correspondingly opened on the operating platform, and the plurality of screw rods are respectively threadedly connected to the plurality of threaded holes 2.
[0010] Preferably, rollers are provided at the bottom of the trolley frame, and a locking device for fixing the trolley frame is also provided on the trolley frame.
[0011] Preferably, fences are provided at both ends of the operating platform and the steps.
[0012] Preferably, a detachable staircase is arranged on the trolley frame, the top of the staircase is flush with the operating platform, and the fence at the top of the staircase is provided with an opening for construction workers to pass through.
[0013] The present invention also discloses a method for rapid circumferential cutting of tunnel secondary lining concrete removal. The method is based on the device for rapid circumferential cutting of tunnel secondary lining concrete removal. The method comprises the following steps:
[0014] S1: Process the trolley frame according to the cross-sectional dimensions of the lining tunnel. The length of the trolley frame is determined according to the length of the lining section. Push the trolley frame. When the trolley frame moves into the construction tunnel, open the locking device to fix the trolley frame.
[0015] S2: Move the hydraulic wall saw device to one end of the arc track, turn on the hydraulic wall saw device, and make it work normally along the arc track. When the hydraulic wall saw device moves to the other end of the arc track, turn off the hydraulic wall saw device;
[0016] S3: Loosen the screw rod and push the arc truss along the truss track. The arc track and the hydraulic wall saw device move together with the arc truss. After moving a certain distance, turn on the hydraulic wall saw device to make the hydraulic wall saw device move in the opposite direction along the arc track until it moves to the starting position of the arc track and then moves the arc truss again. Repeat this cycle until the arc truss moves to the tail of the truss track.
[0017] S4: Retract the locking device, move the trolley frame to the next lining section, and repeat the above steps to cut the tunnel.
[0018] In summary, the beneficial technical effects of the present invention are:
[0019] 1. By setting up the trolley frame, curved truss and curved track, a circular cutting can be completed without removing the curved track, which increases the construction efficiency and solves the problem of inconsistent circular cutting width in the same circular cutting area;
[0020] 2. By setting up the truss track, the arc truss together with the arc track can be moved along the truss track, and there is no need to move the trolley frame every time cutting, which makes the operation more convenient and improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0022] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;
[0023] Figure 3 yes Figure 1 A partial enlarged schematic diagram of part B;
[0024] Figure 4 It is a schematic diagram showing the distribution structure of the truss track;
[0025] Figure 5 It is a schematic diagram of the connection structure between the curved track and the square steel.
[0026] In the figure, 1. trolley frame; 11. roller; 12. fence; 121. opening; 13. stairs; 2. operating platform; 3. steps; 31. steel plate; 32. supporting steel; 4. locking device; 41. supporting rod; 42. collar; 43. anti-skid plate; 5. arc truss; 51. square steel; 52. angle steel; 6. arc track; 61. oblique through hole; 62. fixing bolt; 63. threaded hole 1; 7. truss track; 71. truss wheel; 81. power switch; 8 screw; 9. hydraulic wall saw equipment; 91. tunnel. DETAILED DESCRIPTION
[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0028] refer to Figure 1 and Figure 2 , a circumferential rapid cutting device and cutting method for removing the secondary lining concrete of a tunnel disclosed in the present invention, comprising a trolley frame 1, which is set as a door-type structure. During the construction process, vehicles can pass through the trolley frame 1 normally without affecting traffic. The length of the trolley frame 1 is determined according to the length of the lining section, and the width of the trolley frame 1 is determined according to the cross-sectional profile size of the lining tunnel 91. Combined with Figure 4, an operating platform 2 is provided on the top of the trolley frame 1, and the operating platform 2 is fixedly mounted on the trolley frame 1 with a steel plate 31. Two steps 3 are provided on both sides of the trolley frame 1, and the steps 3 on both sides are symmetrical about the axis of the length direction of the tunnel 91. By providing the operating platform 2 and the steps 3, it is more convenient for construction workers to install cutting equipment. The steps 3 are composed of a steel plate 31 and a support steel 32, and the support steel 32 is tilted and fixed on the side wall of the trolley frame 1, and the steel plate 31 is horizontally arranged and fixedly connected to the end of the support steel 32 away from the trolley frame 1. Fences 12 are provided at both ends of the operating platform 2 and the steps 3, which can effectively prevent safety hazards caused by accidental falls during construction. Stairs 13 are provided on the trolley frame 1, and hooks are fixedly provided on the two side walls of the top of the stairs 13, and the hooks are set on the trolley frame 1, so that the stairs 13 are easy to disassemble. The top of the staircase 13 is flush with the operating platform 2. The fence 12 at the top of the staircase 13 is provided with an opening 121 for construction workers to pass through. The staircase 13 is provided to facilitate construction workers to climb to the operating platform 2 for construction operations. The bottom of the trolley frame 1 is provided with rollers 11 to make the movement of the trolley frame 1 more convenient. The trolley frame 1 is also provided with a locking device 4 for fixing the trolley frame 1. There are multiple locking devices 4, and the multiple locking devices 4 are respectively arranged on the vertical poles on the trolley frame 1 where the rollers 11 are installed. The locking device 4 includes a support rod 41 and a collar 42. There are three support rods 41, and the three support rods 41 are hinged on the trolley frame 1. The end of the support rod 41 away from the hinge point is integrally provided with an anti-skid plate 43 to increase the friction between the support rod 41 and the ground. The collar 42 is made of rubber material and has a certain elasticity. The collar 42 is sleeved on the trolley frame 1. When the trolley frame 1 needs to be fixed, the three support rods 41 are all tilted and supported on the ground; when the trolley frame 1 needs to be moved, the support rods 41 are rotated around the hinge points so that the support rods 41 are in a vertical state and multiple support rods 41 are all against the vertical poles of the trolley frame 1, and finally the support rods 41 are fixed using the rings 42.
[0029] refer to Figure 1 and Figure 2The trolley frame 1 is provided with an arc truss 5, which includes square steel 51 and angle steel 52 for supporting the square steel 51. The square steel 51 is set as an arc structure, and the curvature of the square steel 51 is consistent with that of the tunnel 91. The square steel 51 is bent and formed in sections in the processing plant according to the curvature of the tunnel 91. At the cutting site, each square steel 51 is welded and fixedly connected into an arc. There are multiple angle steels 52, some of which are fixedly connected to the trolley frame 1, and the other part of the angle steels 52 is welded and fixedly connected to the square steel 51. The angle steels 52 are also welded to each other. An arc track 6 is provided on the square steel 51, and the arc track 6 is fixedly connected to the top of the square steel 51, and the arc track 6 is consistent with the curvature of the tunnel 91. The arc track 6 is made of a strip track. An opening 121 with a depth of 2 / 3 of the track side wall thickness is opened on the side wall of the arc track 6 by a cutting machine. The strip track can be bent into the arc track 6 by manpower, which is more convenient to operate. Figure 5 A plurality of oblique through holes 61 are provided on the side wall of the arc track 6, and fixing bolts 62 are passed through the oblique through holes 61. A threaded hole 63 is provided on the square steel 51, and the threaded hole 63 corresponds to the through holes. The fixing bolts 62 are threadedly matched with the threaded hole 63, so that the arc track 6 is fixedly connected to the square steel 51.
[0030] refer to Figure 1 and Figure 3 , the operating platform 2 and the step 3 are both provided with a truss track 7, the length direction of the truss track 7 is parallel to the length direction of the tunnel 91, and the truss track 7 is welded on the plane of the operating platform 2 and the step 3 by using chamfered steel 52. A truss wheel 71 is provided at the bottom of the arc truss 5, and the truss wheel 71 is set as an I-shaped wheel, and the truss wheel 71 rolls on the truss track 7. By setting the truss track 7, it is not necessary to move the trolley frame 1 every time cutting, which makes the operation more convenient and improves the construction efficiency. Two screws 8 are penetrated on the angle steel 52 of the arc truss 5, and two threaded holes 2 are correspondingly opened on the operating platform 2. The screws 8 are threadedly connected with the threaded holes 2, so that the arc truss 5 is fixedly connected to the trolley frame 1, so as to prevent the arc truss 5 from moving during the construction process, causing safety hazards. A hydraulic wall saw device 9 is installed on the arc track 6, and the hydraulic wall saw device 9 adopts the wall saw of the model of Taililai HC360. The hydraulic wall saw device 9 can move along the arc track 6 to cut the tunnel 91.
[0031] refer to Figure 1-Figure 5 The present invention also discloses a method for rapid circumferential cutting of tunnel secondary lining concrete removal, the method is based on the above-mentioned cutting device, and the method comprises the following steps:
[0032] S1: Push the trolley frame 1. When the trolley frame 1 moves into the construction tunnel 91, open the locking device 4 to fix the trolley frame 1;
[0033] S2: Move the hydraulic wall saw device 9 to one end of the arc track 6, turn on the hydraulic wall saw device 9, and make it work normally along the arc track 6. When the hydraulic wall saw device 9 moves to the other end of the arc track 6, turn off the hydraulic wall saw device 9;
[0034] S3: Loosen the screw rod 8, push the arc truss 5 along the truss track 7, the arc track 6 and the hydraulic wall saw device 9 move together with the arc truss 5, turn on the hydraulic wall saw device 9 after moving a certain distance, and make the hydraulic wall saw device 9 move in the opposite direction along the arc track 6 until it moves to the starting position of the arc track 6 and then moves the arc truss 5 again, and repeat the cycle until the arc truss 5 moves to the tail of the truss track 7;
[0035] S4: Retract the locking device 4, move the trolley frame 1 to the next lining section, and repeat the above steps to cut the tunnel 91.
[0036] Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.
Claims
1. A circumferential rapid cutting device for removing secondary lining concrete of a tunnel, comprising a tunnel (91), characterized in that: It also includes a trolley frame (1), a curved track (6), a curved truss (5) and a hydraulic wall saw device (9); The trolley frame (1) is configured as a door-shaped structure; specifically, the length of the trolley frame (1) is determined according to the length of the lining section, and the width of the trolley frame (1) is determined according to the cross-sectional profile size of the lining tunnel (91); the arc truss (5) comprises a square steel (51) and an angle steel (52) for supporting the square steel, the angle steel (52) being fixedly connected to the trolley frame (1), the other end of the angle steel (52) being fixedly connected to the square steel (51), the square steel (51) being configured as an arc structure, the square steel (51) and the tunnel (91) having the same arc, the arc track (6) being fixedly connected around the top of the square steel (51), the arc track (6) and the tunnel (91) having the same arc, the hydraulic wall saw device (9) being installed on the arc track (6), and a spacing for installing the hydraulic wall saw device (9) being reserved between the arc track (6) and the tunnel (91); The arc track (6) is made of a strip track. An opening having a depth of 2 / 3 of the track side wall thickness is opened on the side wall of the arc track (6) by a cutting machine. The strip track can be bent into the arc track (6) by manpower, and the operation is more convenient. A plurality of oblique through holes (61) are opened on the side wall of the arc track (6). Fixing bolts (62) are inserted into the oblique through holes (61). A threaded hole (63) is opened on the square steel (51). The threaded hole (63) corresponds to the through hole. The fixing bolt (62) and the threaded hole (63) are threadedly matched, so that the arc track (6) is fixedly connected to the square steel (51). The trolley frame (1) is provided with a truss track (7), the length direction of the truss track (7) is parallel to the length direction of the tunnel (91), and the bottom of the arc-shaped truss (5) is provided with a truss wheel (71), and the truss wheel (71) is rollingly engaged on the truss track (7); An operating platform (2) is fixedly mounted on the top of the trolley frame (1); The operating platform (2) is fixedly mounted on the trolley frame (1) using a steel plate (31); the operating platform (2) is arranged horizontally, and a plurality of steps (3) are arranged on both sides of the trolley frame (1), and the plurality of steps (3) on both sides are symmetrical about the axis in the length direction of the tunnel (91), and there are a plurality of truss rails (7) and truss wheels (71), and the truss rails (7) are arranged on the surface of the operating platform (2) and the plane of the steps (3); A plurality of screw rods (8) are passed through the angle steel (52), a plurality of threaded holes (2) are correspondingly opened on the operating platform (2), and the plurality of screw rods (8) are respectively threadedly connected to the plurality of threaded holes (2); A roller (11) is arranged at the bottom of the trolley frame (1), and a locking device (4) for fixing the trolley frame (1) is also arranged on the trolley frame (1); there are a plurality of locking devices (4), and the plurality of locking devices (4) are respectively arranged on the vertical rods on which the roller (11) is installed on the trolley frame (1); The locking device (4) comprises a support rod (41) and a collar (42). There are three support rods (41), and the three support rods (41) are all hinged on the trolley frame (1). An anti-slip plate (43) is integrally provided at one end of the support rod (41) away from the hinge point to increase the friction between the support rod (41) and the ground. The collar (42) is made of rubber material and has a certain elasticity. The collar (42) is sleeved on the trolley frame (1). When the trolley frame (1) needs to be fixed, the three support rods (41) are all tilted and supported on the ground. When the trolley frame (1) needs to be moved, the support rods (41) are rotated around the hinge point so that the support rods (41) are in a vertical state and the plurality of support rods (41) are all against the vertical poles of the trolley frame (1). Finally, the support rods (41) are fixed using the collar (42).
2. The circumferential rapid cutting device for removing the secondary lining concrete of a tunnel according to claim 1 is characterized by: Fences (12) are provided at both ends of the operating platform (2) and the steps (3).
3. The circumferential rapid cutting device for removing the secondary lining concrete of a tunnel according to claim 2 is characterized by: A detachable staircase (13) is arranged on the trolley frame (1), the top of the staircase (13) is flush with the operating platform (2), and the fence (12) at the top of the staircase (13) is provided with an opening (121) for construction workers to pass through.
4. A method for rapid circumferential cutting of tunnel secondary lining concrete removal, characterized in that: The method is based on a circumferential rapid cutting device for removing secondary lining concrete of a tunnel as described in claims 1 to 3, and the method comprises the following steps: S1: machining a trolley frame (1) according to the cross-sectional profile of the lining tunnel, the length of the trolley frame (1) being determined according to the length of the lining section, pushing the trolley frame (1), and when the trolley frame (1) is moved into the construction tunnel (91), opening a locking device (4) to fix the trolley frame (1); S2: moving the hydraulic wall saw device (9) to one end of the curved track (6), turning on the hydraulic wall saw device (9) so that it can work normally along the curved track (6); when the hydraulic wall saw device (9) moves to the other end of the curved track (6), turning off the hydraulic wall saw device (9); S3: Loosen the screw rod (8), push the arc truss (5) along the truss track (7), and the arc truss (6) and the hydraulic wall saw device (9) move together with the arc truss (5). After moving a certain distance, turn on the hydraulic wall saw device (9), so that the hydraulic wall saw device (9) moves in the opposite direction along the arc track (6) until it moves to the starting position of the arc track (6) and then moves the arc truss (5) again. Repeat the cycle until the arc truss (5) moves to the tail end of the truss track (7); S4: Retract the locking device (4), move the trolley frame (1) to the next lining section, and repeat the above steps to cut the tunnel (91).