Multi-arm high-pressure water jet cutting machine and cutting method for tunnel lining arch replacement operation

Abstract

The present invention discloses a multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation, including a mobile driving operation platform and a construction platform, the lower end of each main telescopic arm is hinged on the construction platform through a main shaft, the upper end of the main telescopic arm located in the middle is hingedly installed with a water jet mounting seat through a rotating shaft, and a high-pressure water jet cutter head is fixedly installed on the top of the water jet mounting seat, and the main telescopic arms located on both sides are each equipped with a telescopic arm group, and the telescopic arm group is surrounded by an A telescopic arm, a B telescopic arm and a C telescopic arm, and the two C telescopic arms and the two transverse telescopic arms are together surrounded by an area-adjustable quadrilateral frame; the main telescopic arms located on both sides are also each equipped with two temporary support brackets for arch replacement, and the four temporary support brackets for arch replacement are used to respectively support the four corners of the lining block to be cut during the cutting operation. At the same time, the present invention also discloses a tunnel lining arch replacement operation cutting method to achieve the purpose of reducing pollution, precise operation, safe and efficient operation.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction equipment, and in particular relates to cutting equipment used for tunnel lining arch replacement operations, and a cutting method thereof. Background Art

[0002] When the tunnel lining is squeezed and deformed too much due to the complex surrounding rock pressure and exceeds the tunnel design limit, it is necessary to remove and replace the lining in the area where the deformation is too large and exceeds the limit. The commonly used arch replacement methods currently include blasting or manual pneumatic picks and blasting hammers. The blasting method is not easy to control the blasting energy and blasting range, and it is easy to cause excessive disturbance to the surrounding rock behind the lining, destroy the stability of the surrounding rock, or cause excessive blasting and incomplete blasting demolition; the use of pneumatic picks or blasting hammers is manual work, with low construction efficiency and a large amount of dust and noise pollution. The above construction methods will also pose a greater safety risk to the operators. Summary of the invention

[0003] In view of the defects of the currently commonly used tunnel arch replacement construction method, the present invention aims to use high-pressure water jet cutting to replace traditional blasting, pneumatic picks and blasting hammers to cut, dismantle and replace arches, thereby achieving the purpose of reducing pollution and ensuring safe and efficient operations.

[0004] To this end, the technical solution adopted by the present invention is: a multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation, comprising a mobile driving operation platform and a construction platform, wherein the construction platform is installed on the mobile driving operation platform, and three main telescopic arms are arranged at intervals on the left and right of the construction platform, and the lower end of each main telescopic arm is hinged to the construction platform through a main shaft, and the upper end of the main telescopic arm located in the middle is hinged to a water jet mounting seat through a rotating shaft, and a high-pressure water jet cutter head is fixedly installed on the top of the water jet mounting seat, and a fluorescent sensing controller is provided on the high-pressure water jet cutter head, and the main telescopic arms located on both sides are respectively equipped with a telescopic arm group, and the telescopic arm group is an area-adjustable tripod surrounded by an A telescopic arm, a B telescopic arm and a C telescopic arm, wherein the lower ends of the A telescopic arm and the B telescopic arm are respectively hinged to the upper ends of the main telescopic arms, and the two ends of the C telescopic arm are respectively hinged to the upper ends of the A telescopic arm and the B telescopic arm; The telescopic arm groups on the left and right sides are connected by two transverse telescopic arms, wherein the two ends of one transverse telescopic arm are respectively hinged to one end of the C telescopic arms on both sides, and the two ends of the other transverse telescopic arm are respectively hinged to the other end of the C telescopic arms on both sides, so that the two C telescopic arms and the two transverse telescopic arms together form an area-adjustable quadrilateral frame, which can be adjusted to a larger area to support the peripheral lining outside the cut area during cutting operations, and can also be adjusted to a smaller area to lift the cut lining blocks and slowly lower them after the cutting is completed; the main telescopic arms on both sides are also each equipped with two temporary support brackets for arch replacement, each of which is composed of a D telescopic arm and a temporary support bracket seat, the lower end of the D telescopic arm is hinged to the upper end of the main telescopic arm, and the temporary support bracket seat is fixedly installed on the upper end of the D telescopic arm, and the four temporary support brackets for arch replacement are used to respectively support the four corners of the cut lining blocks during cutting operations.

[0005] As a preferred embodiment of the above solution, the mobile driving operation platform is also provided with a driving cab and an operation platform.

[0006] At the same time, the present invention also discloses a tunnel lining arch replacement operation cutting method, comprising the following steps:

[0007] The first step is to use fluorescent paint to mark the lining blocks to be cut in the tunnel arch replacement operation area;

[0008] The second step is to drive the multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation as described in claim 1 to the lower side of the tunnel arch replacement area;

[0009] The third step is to operate the multi-arm high-pressure water jet cutting machine for the tunnel lining arch replacement operation, control the main telescopic arm, A telescopic arm, B telescopic arm, C telescopic arm and two lateral telescopic arms on both sides to rotate and telescope at the same time, and make precise adjustments up and down, left and right, front and back of the parallelogram to form an encirclement larger than the fluorescent marking area, which is used to press against the peripheral lining outside the cutting area to fix the peripheral lining;

[0010] The fourth step is to operate and control the main telescopic arms and the D telescopic arms of the temporary arch-changing support brackets on both sides to rotate and telescope at the same time, so as to ensure that the temporary support brackets of the four temporary arch-changing support brackets are respectively against the four corners of the cut lining blocks;

[0011] The fifth step is to operate and control the main telescopic arm located in the middle to control the high-pressure water jet cutter head to approach the lining of the arch-changing area. The fluorescent sensor controller attached to the high-pressure water jet cutter head receives the fluorescent paint signal of the arch-changing area boundary mark, and controls the displacement of the high-pressure water jet cutter head to perform cutting and arch-changing operations. At the same time, the high-pressure water jet cutter head is equipped with a pressure sensor. When the reaction water pressure sensed by the high-pressure water jet cutter head drops suddenly, the cutter head is controlled to move and cut. During the cutting process, when the high-pressure water jet cutter head approaches any temporary support bracket for arch-changing, the temporary support bracket for arch-changing shrinks, and at least three temporary support brackets for arch-changing are kept against the triangular corners of the lining block to be cut.

[0012] Step 6. After the cutting is completed, retract the main telescopic arm in the middle, retract the high-pressure water jet cutter head, and adjust the main telescopic arm, A telescopic arm, B telescopic arm, C telescopic arm and two lateral telescopic arms on both sides to lift the cut lining block and slowly lower it.

[0013] More preferably, in the fifth step, when the arch change area is too large, pre-cutting is performed first, and the arch change area is cross-cut or tic-tac-toe-cut to be divided into smaller pieces.

[0014] More preferably, in the fifth step, after the cutting of the main structure is completed, a high-pressure water jet cutter head is used to perform additional precise cutting on the incompletely cut areas.

[0015] The beneficial effects of the present invention are as follows: the high-pressure water jet cutter head is loaded onto the multi-arm mobile machine, and the area-adjustable tripod telescopic arm group formed on the left and right sides is connected and combined with the lateral telescopic arm to form an area-adjustable quadrilateral frame, which utilizes the stability of the triangle and the all-round precise adjustment of the multi-arm structure to ensure that the enclosed quadrilateral frame can match the tunnel lining arch replacement area at any position, and the quadrilateral frame can be adjusted to a larger area to support the peripheral lining outside the cut area during the cutting operation, and can also be adjusted to a smaller area to lift the cut lining block and slowly put it down after the cutting is completed; four temporary arch replacement support brackets are equipped to respectively support the four corners of the cut lining block during the cutting operation, so that the cut lining block and the peripheral lining outside the cut area are supported and supported respectively, preventing the vibration generated during the water jet cutting process from being transmitted to cause the arch replacement area to expand, and facilitating the cutting operation; after the cutting is completed, the cut lining block can also be lifted and slowly put down by using the reduced quadrilateral frame to prevent the cut lining block from directly falling and posing a safety hazard. During the actual construction, fluorescent paint markings and fluorescent sensor controllers on the high-pressure water jet cutter heads are used to automatically control the high-pressure water jet cutter heads to perform precise cutting, removal and arch replacement, and reuse water resources to achieve the goals of reducing pollution, precise operation, and safe and efficient operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a simple schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the main part of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0019] Combination Figure 1 — Figure 2 As shown, a multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation is mainly composed of a mobile driving operation platform 1, a construction base 2, a main telescopic arm 3, a water jet mounting seat 4, a high-pressure water jet cutter head 5, an A telescopic arm 6, a B telescopic arm 7, a C telescopic arm 8, a lateral telescopic arm 9, a D telescopic arm 10, a temporary support bracket 11, a cab 12 and an operation platform 13.

[0020] The mobile driving operation platform 1 is used to realize the installation and movement of the entire multi-arm high-pressure water jet cutting machine. The construction platform 2 is installed on the mobile driving operation platform 1 and is used to install the main part of the multi-arm high-pressure water jet cutting machine.

[0021] Three main telescopic arms 3 are arranged at intervals on the left and right sides of the construction platform 2. The lower end of each main telescopic arm 3 is hinged to the construction platform 2 through the main axis a. Each main telescopic arm 3 can rotate around the main axis a and can be extended and shortened. The upper end of the main telescopic arm 3 located in the middle is hingedly installed with a water jet mounting seat 4 through a rotating shaft b. A high-pressure water jet head 5 is fixedly installed on the top of the water jet mounting seat 4. The high-pressure water jet head 5 is equipped with a fluorescent sensor controller.

[0022] The main telescopic arms 3 on both sides are each equipped with a telescopic arm group, which is an adjustable-area tripod surrounded by the A telescopic arm 6, the B telescopic arm 7 and the C telescopic arm 8. The lower ends of the A telescopic arm 6 and the B telescopic arm 7 are respectively hinged to the upper ends of the main telescopic arm 3, and the two ends of the C telescopic arm 8 are respectively hinged to the upper ends of the A telescopic arm 6 and the B telescopic arm 7. The telescopic arm groups on the left and right sides are connected by two transverse telescopic arms 9, wherein the two ends of one transverse telescopic arm 9 are respectively hinged to one end of the C telescopic arm 8 on both sides, and the two ends of the other transverse telescopic arm 9 are respectively hinged to the other end of the C telescopic arm 8 on both sides, so that the two C telescopic arms 8 and the two transverse telescopic arms 9 together form an adjustable-area quadrilateral frame, which can be adjusted to a larger area to support the peripheral lining outside the cut area during the cutting operation, and can be adjusted to a smaller area to lift the cut lining block and slowly put it down after the cutting is completed.

[0023] The main telescopic arms 3 on both sides are also equipped with two temporary arch-changing support brackets, each of which is composed of a D telescopic arm 10 and a temporary support bracket 11. The lower end of the D telescopic arm 10 is hinged to the upper end of the main telescopic arm 3, and the temporary support bracket 11 is fixedly installed on the upper end of the D telescopic arm 10. The four temporary arch-changing support brackets are used to respectively support the four corners of the lining block to be cut during the cutting operation.

[0024] To achieve the rotation of the hinge point, each hinge point is individually equipped with a telescopic cylinder (not shown in the figure), and the rotation around the hinge point is achieved by pushing and pulling the telescopic cylinder. A bearing shaft is provided on each hinge joint, which is a commonly used mechanical structure and will not be described here.

[0025] In addition, a cab 12 and an operating platform 13 are also provided on the mobile driving operating platform 1 .

[0026] A tunnel lining arch replacement operation cutting method comprises the following steps:

[0027] The first step is to mark the lining blocks to be cut with fluorescent paint in the tunnel arch replacement operation area.

[0028] The second step is to drive the multi-arm high-pressure water jet cutting machine used for the tunnel lining arch replacement operation to the lower side of the tunnel arch replacement area.

[0029] The third step is to operate the multi-arm high-pressure water jet cutting machine for the tunnel lining arch replacement operation, control the main telescopic arm 3, A telescopic arm 6, B telescopic arm 7, C telescopic arm 8 and two lateral telescopic arms 9 on both sides to rotate and telescope at the same time, and make precise adjustments to the up, down, left, right, front and back of the parallelogram to form an encirclement larger than the fluorescent marked area, which is used to rest on the peripheral lining outside the cut area to fix the peripheral lining.

[0030] The fourth step is to operate and control the main telescopic arms 3 and the D telescopic arms 10 of the arch-changing temporary support brackets on both sides to rotate and telescope at the same time, ensuring that the temporary support brackets 11 of the four arch-changing temporary support brackets are respectively against the four corners of the cut lining blocks.

[0031] The fifth step is to operate and control the main telescopic arm 3 located in the middle, control the high-pressure water jet cutter head 5 to approach the lining of the arch-changing area, and the fluorescent sensing controller attached to the high-pressure water jet cutter head 5 receives the fluorescent paint signal of the arch-changing area boundary mark, and controls the displacement of the high-pressure water jet cutter head 5 to perform cutting and arch-changing operations. At the same time, the high-pressure water jet cutter head 5 is equipped with a pressure sensor. When the reaction water pressure sensed by the high-pressure water jet cutter head 5 drops suddenly, the cutter head is controlled to move and cut, and the high-pressure water jet cutter head 5 performs cutting operations along the fluorescent paint marked line; during the cutting process, when the high-pressure water jet cutter head 5 approaches any temporary support for arch-changing, the temporary support for arch-changing shrinks to avoid the high-pressure water jet cutter head 5, but at least three temporary support for arch-changing should be kept against the triangular corners of the lining block to be cut, that is, at most one temporary support for arch-changing is retracted each time.

[0032] Preferably, in the fifth step, when the arch change area is too large, pre-cutting is performed first, and the arch change area is cross-cut or tic-tac-toe-cut to break it into smaller pieces.

[0033] In addition, in the fifth step, after the cutting of the main structure is completed, the high-pressure water jet cutter head 5 is used to perform additional precise cutting on the incompletely cut areas.

[0034] Step 6. After the cutting is completed, retract the main telescopic arm 3 in the middle, retract the high-pressure water jet cutter head 5, and adjust the main telescopic arm 3, A telescopic arm 6, B telescopic arm 7, C telescopic arm 8 and two lateral telescopic arms 9 on both sides to lift the cut lining block and slowly lower it.

Claims

1. A multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation, characterized in that: The invention comprises a mobile driving operation platform (1) and a construction platform (2), wherein the construction platform (2) is installed on the mobile driving operation platform (1), and three main telescopic arms (3) are arranged on the construction platform (2) at intervals on the left and right sides, and the lower end of each main telescopic arm (3) is hinged to the construction platform (2) through a main shaft (a), and the upper end of the main telescopic arm (3) located in the middle is hingedly installed with a water jet mounting seat (4) through a rotating shaft (b), and a high-pressure water jet cutter head (5) is fixedly installed on the top of the water jet mounting seat (4) The high-pressure water jet cutter head (5) is equipped with a fluorescent sensor controller. The main telescopic arms (3) on both sides are each equipped with a telescopic arm group. The telescopic arm group is an area-adjustable tripod surrounded by an A telescopic arm (6), a B telescopic arm (7) and a C telescopic arm (8). The lower ends of the A telescopic arm (6) and the B telescopic arm (7) are respectively hinged to the upper ends of the main telescopic arm (3), and the two ends of the C telescopic arm (8) are respectively hinged to the upper ends of the A telescopic arm (6) and the B telescopic arm (7); the telescopic arms on the left and right sides are respectively equipped with a telescopic arm group. The retractable arm group is connected by two transverse telescopic arms (9), wherein the two ends of one transverse telescopic arm (9) are respectively hinged to one end of the C telescopic arms (8) on both sides, and the two ends of the other transverse telescopic arm (9) are respectively hinged to the other end of the C telescopic arms (8) on both sides, so that the two C telescopic arms (8) and the two transverse telescopic arms (9) together form an area-adjustable quadrilateral frame, which can be adjusted to a larger area for supporting the peripheral lining outside the cutting area during cutting operation, and can be adjusted to a smaller area for After the cutting is completed, the cut lining block is lifted and slowly lowered; the main telescopic arms (3) located on both sides are also respectively equipped with two temporary support brackets for arch replacement, each of which is composed of a D telescopic arm (10) and a temporary support bracket (11), the lower end of the D telescopic arm (10) is hinged to the upper end of the main telescopic arm (3), and the temporary support bracket (11) is fixedly installed on the upper end of the D telescopic arm (10), and the four temporary support brackets for arch replacement are used to respectively support the four corners of the cut lining block during the cutting operation.

2. The multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation according to claim 1, characterized in that: The mobile driving operation platform (1) is also provided with a driving cab (12) and an operation platform (13).

3. A tunnel lining arch replacement operation cutting method, characterized in that: The following steps are involved: The first step is to use fluorescent paint to mark the lining blocks to be cut in the tunnel arch replacement operation area; The second step is to drive the multi-arm high-pressure water jet cutting machine for tunnel lining arch replacement operation as described in claim 1 to the lower side of the tunnel arch replacement area; The third step is to operate the multi-arm high-pressure water jet cutting machine for the tunnel lining arch replacement operation, control the main telescopic arm (3), A telescopic arm (6), B telescopic arm (7), C telescopic arm (8) and two transverse telescopic arms (9) on both sides to rotate and telescope at the same time, and perform precise fine adjustment of the parallelogram up and down, left and right, front and back, to form an encirclement larger than the fluorescent marking area, which is used to abut against the peripheral lining outside the cutting area to fix the peripheral lining; The fourth step is to operate and control the main telescopic arms (3) and the D telescopic arms (10) of the arch-changing temporary support brackets on both sides to rotate and telescope at the same time, so as to ensure that the temporary support brackets (11) of the four arch-changing temporary support brackets are respectively against the four corners of the cut lining block; The fifth step is to operate and control the main telescopic arm (3) located in the middle to control the high-pressure water jet cutter head (5) to approach the lining of the arch replacement area, and the fluorescent paint signal of the arch replacement area boundary mark is received by the fluorescent sensing controller attached to the high-pressure water jet cutter head (5), and the high-pressure water jet cutter head (5) is controlled to move to perform cutting and arch replacement operations. At the same time, the high-pressure water jet cutter head (5) is equipped with a pressure sensor, and when the reaction water pressure sensed by the high-pressure water jet cutter head (5) suddenly drops, the cutter head is controlled to move and cut; during the cutting process, when the high-pressure water jet cutter head (5) approaches any temporary support bracket for arch replacement, the temporary support bracket for arch replacement shrinks, and at least three temporary support brackets for arch replacement are kept against the triangular corners of the lining block to be cut; Step 6: After the cutting is completed, the main telescopic arm (3) in the middle is retracted, the high-pressure water jet cutter head (5) is retracted, and the main telescopic arm (3), A telescopic arm (6), B telescopic arm (7), C telescopic arm (8) and two transverse telescopic arms (9) on both sides are adjusted to lift the cut lining block and slowly lower it.

4. The tunnel lining arch replacement operation cutting method according to claim 3 is characterized in that: In the fifth step, when the arch change area is too large, pre-cutting is performed first, and the arch change area is cross-cut or tic-tac-toe-cut to break it into smaller pieces.

5. The tunnel lining arch replacement operation cutting method according to claim 3 is characterized in that: In the fifth step, after the cutting of the main structure is completed, the high-pressure water jet cutter head (5) is used to perform additional precise cutting on the incompletely cut areas.

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