A leading grouting reinforcement device for a shield tunneling machine

Abstract

The application relates to the technical field of grouting reinforcement, and discloses an advanced grouting reinforcement device for a shield machine, which comprises an impact mechanism, and the impact mechanism further comprises a fixing plate. Before use, the advanced grouting reinforcement device is transported to a required position by internal equipment of the shield machine, a driving gear groove II is inserted into the inner wall of a driving gear ring after the position is fixed, the power motor is connected with the power supply of the electric telescopic rod, at this time, the electric telescopic rod moves the power motor inward, at this time, the power motor drives the rotating head mechanism to process external rock strata, when the rotating head mechanism is hindered by the rock strata and appears to be stagnant, the reverse force generated by extruding the rock strata acts on the driving gear, at this time, the force acting on the driving gear makes the air pressure bag shrink, the driving gear moves towards the power motor, at this time, the driving gear loses the control of the control pipe, and the notch on the stress rod is in contact with the protrusion on the inner wall of the rotating pipe.

Description

Technical Field

[0001] This invention relates to the field of grouting reinforcement equipment technology, specifically to an advanced grouting reinforcement device for tunnel boring machines. Background Technology

[0002] Due to its fast construction speed, low project cost, and safe tunneling process, shield tunneling technology has been rapidly developed in various engineering practices. However, shield tunneling often encounters soft strata. Because soft strata have poor stability and settlement is difficult to control, and surrounding existing buildings have weak resistance to surface deformation in soft strata, improper control of stratum deformation can affect the stability of the tunnel and the normal use of surrounding buildings. In particular, when tunneling through existing old buildings or deformation-sensitive structures, pretreatment measures must be taken.

[0003] However, when drilling through soft strata, there are many hard rocks and other hard materials inside the soil layer. When encountering rocks during drilling, workers can only rely on the impact force of the drill bit to push the rocks away, or change the drill bit and continue the drilling process, which results in low work efficiency. In order to address the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an advanced grouting reinforcement device for tunnel boring machines, including an impact mechanism. The impact mechanism also includes a fixed plate. An electric telescopic rod is fixedly connected to the side wall of the fixed plate. A sliding plate is fixedly connected to the end of the electric telescopic rod away from the fixed plate. An equipment bracket is fixedly connected to the side wall of the fixed plate. The control mechanism includes a power motor fixedly connected to the side wall of the sliding plate, a rotating tube rotatably connected to the outer wall of the power motor, and a control tube fixedly connected to the end of the rotating tube away from the power motor. The spare tube includes a tube wall 1 placed on the outer wall of the top of the equipment bracket. Several drive tooth grooves are opened on the outer wall of the tube wall 1, and an inner wall column is slidably connected to the inner wall of the tube wall 1. The rotating head mechanism includes a rotating head tube that is slidably connected to the inner wall of the through hole on the fixed plate. Several output holes are opened on the side wall of the rotating head tube, and a sludge rotating head is fixedly connected to the front end of the rotating head tube.

[0005] Preferably, the impact mechanism also includes a support rod fixedly connected to the side wall of the fixed plate, a fixed bracket fixedly connected to the top of the fixed plate, a grouting pipe fixedly connected to the inner wall of the through hole on the fixed bracket, and a support frame fixedly connected to the side wall of the fixed plate. This mechanism provides an installation position for subsequent mechanisms and plays a stabilizing role during operation, ensuring normal operation of the equipment and avoiding problems such as bumps.

[0006] Preferably, the control mechanism further includes a drive gear meshing with the inner wall of the control tube. An air pressure bladder is fixedly connected to the side wall of the drive gear. An air pressure receiving plate is fixedly connected to the end of the air pressure bladder away from the drive gear. A force-bearing rod is fixedly connected to the side wall of the air pressure receiving plate. A drive gear ring is fixedly connected to the outer wall of the drive gear. Before use, the gear is transported to the required position by the internal equipment of the tunnel boring machine. After the position is fixed, the power supply to the power motor and the electric telescopic rod is turned on. At this time, the electric telescopic rod will drive the power motor to move inward. The power motor drives the rotating head mechanism to process the external rock layer. When the rotating head mechanism is obstructed by the rock and stops, the reverse force generated by squeezing the rock will act on the drive gear. At this time, the drive gear is stressed and the air pressure bladder contracts, causing the drive gear to move in the direction of the power motor. At this time, the drive gear will lose control of the control tube, and the groove on the force-bearing rod will contact the protrusion on the inner wall of the rotating tube. At this time, the rotating tube drives the rotating head mechanism to rotate through the force-bearing rod and the drive connector to perform the drilling process on the outer rock wall, so that the equipment can simultaneously cope with the constraints of mud and rock.

[0007] Preferably, the control mechanism further includes a drive connector fixedly connected to the side wall of the force-bearing rod. A return spring is fixedly connected in the groove on the side wall of the drive connector. A limit block is fixedly connected to the end of the return spring away from the drive connector. A belt is fixedly connected to the side wall of the limit block. After cleaning is completed, the connection between the drive gear ring and the drive gear groove can be disconnected to allow the electric telescopic rod to extend outward, forcing the inner wall column to detach from the pipe wall, so that the pipe wall and the rotating head pipe form a transmission pipeline. After the above work is completed, the workers release the grouting pipe from the end of the pipe wall, thereby achieving the grouting effect at the front end of the tunnel boring machine.

[0008] Preferably, the control mechanism further includes a second reset spring fixedly connected to the inner wall of the drive connector. A pressing plate is fixedly connected to the end of the second reset spring away from the drive connector. The pressing plate is slidably connected to a through hole on the side wall of the drive connector. A contact ring is fixedly connected to the side wall of the pressing plate.

[0009] Preferably, the spare tube further includes a connecting groove opened on the end face of the inner wall column. A spare connector is fixedly connected to the end of the inner wall column away from the connecting groove. Several connecting grooves are opened on the side wall of the spare connector. A reset spring three is fixedly connected to the inner wall of the connecting groove. A connecting block is fixedly connected to the end of the reset spring three away from the spare connector.

[0010] Preferably, the rotating head mechanism also includes a rock rotating head slidably connected to the inner wall of the rotating head tube. Several cleaning grooves are provided on the side wall of the rock rotating head. A return spring four is fixedly connected to the inner wall of the cleaning groove. A cleaning plate is fixedly connected to the end of the return spring four away from the cleaning groove. After drilling is completed, the inner wall column is rotated outward and dislodged by an electric telescopic rod and a power motor. At this time, the cleaning plate is subjected to force and rotates and is dragged outward, cleaning and draining the inner wall of the rotating head tube and the inner wall of the tube wall. This avoids the problem that silt will block the inside of the transmission pipe through the output hole during drilling, causing some areas to be unable to be reinforced due to pipe blockage during grouting.

[0011] Preferably, the rotating head mechanism further includes a second drive tooth groove on the outer wall of the rotating head tube, a connection port on the tail end face of the rock rotating head, a sliding connection between the side wall of the cleaning plate and the inner wall of the rotating head tube, and an engagement connection between the outer wall of the second drive tooth groove and the inner wall of the drive tooth ring. When deep grouting is required, after the above drilling is completed, the phenomenon of the sliding plate gradually approaching the fixed plate forces the support rod to contact the outer wall of the contact ring. At this time, the contact ring will drive the pressing plate to move downward. During the movement, the belt is subjected to tensile force, which forces the limiting block to retract inward, causing the drive to... When the connector loses control of the rock rotating head, as the electric telescopic rod moves outward, the drive tooth ring also loses its restriction on the drive tooth groove two, completing the autonomous disengagement of the drill bit. At this time, as the sliding plate continues to retreat, after the sliding plate moves outward, it will lose its restriction on the spare tube, causing the spare tube to roll onto the surface of the support frame and control tube. At this time, as the drive tooth ring rotates, the drive tooth groove one is squeezed and rotated, causing the drive tooth groove one to connect with the drive tooth ring, and the spare connector to connect with the connection port, realizing the automatic extension of the pipeline and reducing manual intervention.

[0012] A pre-grouting reinforcement device for tunnel boring machines and its usage method include the following steps: S1: Before use, this invention is transported to the required position through the internal equipment of the tunnel boring machine. After the position is fixed, the second drive tooth groove and the connecting port are inserted into the inner wall of the drive tooth ring, and the power supply of the power motor and the electric telescopic rod is turned on. S2: When deep grouting is required, as the sliding plate continues to move backward, it will lose its restraint on the spare pipe after moving outward, causing the spare pipe to roll onto the surface of the support frame and control pipe. S3: After completing the above work, the staff will release the grouting pipe from the end of the pipe wall to achieve the grouting effect at the front end of the tunnel boring machine.

[0013] The present invention has the following beneficial effects: (1) Before use, this invention is transported to the required position through the internal equipment of the tunnel boring machine. After fixing the position, the drive tooth groove two and the connecting port are inserted into the inner wall of the drive tooth ring, and the power supply of the power motor and the electric telescopic rod is turned on. At this time, the electric telescopic rod will drive the power motor to move inward. At this time, the power motor drives the rotating head mechanism to process the external rock layer. When the rotating head mechanism is obstructed by the rock and stops, the reverse force generated by squeezing the rock will act on the drive gear. At this time, the drive gear is subjected to force, causing the air pressure bladder to contract, causing the drive gear to move in the direction of the power motor. At this time, the drive gear will lose control of the control tube, and the groove on the force rod will contact the protrusion on the inner wall of the rotating tube. Figure 5 As shown, at this time, the rotating tube drives the rock rotating head to rotate through the force rod and drive connector. At this time, the rock rotating head is subjected to the pressure of the power motor and extends outward along the inner wall of the rotating head tube. The drill bit position of the rock rotating head will exceed the position of the mud rotating head and perform drilling on the outer wall of the rock. This allows the equipment to cope with the limitations of mud and rock at the same time, without the need for workers to temporarily change the rotating head, thus improving work efficiency.

[0014] (2) When deep grouting is required, the present invention utilizes the phenomenon of the sliding plate gradually approaching the fixed plate to force the support rod to contact the outer wall of the contact ring. At this time, the contact ring will drive the pressing plate to move downward. During the movement, the belt is affected by the tension force, which forces the limit block to retract inward, causing the drive connector to lose control of the rock rotating head. At this time, as the electric telescopic rod moves outward, the drive tooth ring also loses the restriction on the drive tooth groove two, completing the autonomous disengagement of the drill bit. At this time, as the sliding plate continues to retreat, after the sliding plate moves outward, the sliding plate will lose the restriction on the spare pipe, causing the spare pipe to roll onto the surface of the support frame and the control pipe. At this time, as the drive tooth ring rotates, the drive tooth groove one is squeezed and rotated, causing the drive tooth groove one to connect with the drive tooth ring, and the spare connector to connect with the connection port, realizing the automatic extension of the pipeline and reducing manual intervention.

[0015] (3) After cleaning is completed, the electric telescopic rod can be extended outward by disconnecting the connection between the drive tooth ring and the drive tooth groove, forcing the inner wall column to detach from the pipe wall, so that the pipe wall and the rotating head pipe form a transmission pipeline. After completing the above work, the workers will release the grouting pipe from the end of the pipe wall, thereby achieving the grouting effect at the front end of the shield machine.

[0016] (4) After drilling is completed, the inner wall column is rotated outward by an electric telescopic rod and a power motor. At this time, the cleaning plate is rotated and dragged outward by the force, and the inner wall of the rotating pipe and the pipe wall is cleaned and drained. This avoids the problem that the silt will block the inside of the transmission pipe through the output hole during drilling, which would cause some areas to be unable to be reinforced due to pipe blockage during grouting. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the overall structural components of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the impact mechanism of the present invention; Figure 4 This is a schematic diagram of the control mechanism of the present invention; Figure 5 This is an exploded view of the control mechanism components of the present invention; Figure 6 This is a schematic diagram of the internal components of the control mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of A in the middle; Figure 8 This is a schematic diagram of the tail section of the spare tube of the present invention; Figure 9 This is a schematic diagram of the spare tube head of the present invention; Figure 10 This is an exploded view of the head assembly of the rotating mechanism of the present invention; Figure 11 This is a schematic diagram of the tail assembly of the rotating mechanism of the present invention; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Impact mechanism; 101. Fixed plate; 102. Electric telescopic rod; 103. Sliding plate; 104. Equipment bracket; 105. Support rod; 106. Fixed bracket; 107. Grouting pipe; 108. Support frame; 2. Control mechanism; 201. Power motor; 202. Rotating pipe; 203. Control pipe; 204. Drive gear; 205. Air pressure bladder; 206. Air pressure bearing plate; 207. Bearing rod; 208. Drive connector; 209. Return spring 1; 210. Limit block; 211. Belt; 212. Return spring 2. 213. Pressing plate; 214. Contact ring; 215. Drive gear ring; 3. Spare pipe; 301. Pipe wall one; 302. Drive gear groove one; 303. Inner wall column; 304. Connecting groove; 305. Spare connector; 306. Connecting slide; 307. Return spring three; 308. Connecting block; 4. Rotating head mechanism; 401. Rotating head pipe; 402. Output hole; 403. Silt rotating head; 404. Rock rotating head; 405. Return spring four; 406. Cleaning plate; 407. Drive gear groove two; 408. Connecting port; 409. Cleaning tank. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figure 1 - Figure 3 This invention relates to an advanced grouting reinforcement device for tunnel boring machines, comprising an impact mechanism 1, the impact mechanism 1 further comprising a fixing plate 101, an electric telescopic rod 102 fixedly connected to the side wall of the fixing plate 101, a sliding plate 103 fixedly connected to the end of the electric telescopic rod 102 away from the fixing plate 101, and an equipment bracket 104 fixedly connected to the side wall of the fixing plate 101. Control mechanism 2 includes a power motor 201 fixedly connected to the side wall of the sliding plate 103, a rotating tube 202 rotatably connected to the outer wall of the power motor 201, and a control tube 203 fixedly connected to the end of the rotating tube 202 away from the power motor 201. The spare tube 3 includes a tube wall 301 placed on the outer wall of the top of the equipment bracket 104. The outer wall of the tube wall 301 is provided with a number of drive tooth grooves 302, and the inner wall of the tube wall 301 is slidably connected with an inner wall column 303. The rotating head mechanism 4 includes a rotating head tube 401 that is slidably connected to the inner wall of the through hole on the fixed plate 101. Several output holes 402 are opened on the side wall of the rotating head tube 401, and a sludge rotating head 403 is fixedly connected to the front end of the rotating head tube 401.

[0021] The impact mechanism 1 also includes a support rod 105 fixedly connected to the side wall of the fixed plate 101. A fixed bracket 106 is fixedly connected to the top of the fixed plate 101. A grouting pipe 107 is fixedly connected to the inner wall of the through hole on the fixed bracket 106. A support frame 108 is fixedly connected to the side wall of the fixed plate 101. This mechanism provides an installation position for subsequent mechanisms and plays a stabilizing role during operation, ensuring the normal operation of the equipment and avoiding problems such as bumps.

[0022] Example 2, please refer to Figure 4 - Figure 8 This invention relates to an advanced grouting reinforcement device for tunnel boring machines. Based on Embodiment 1, the control mechanism 2 further includes a drive gear 204 meshing with the inner wall of the control pipe 203. An air pressure bladder 205 is fixedly connected to the side wall of the drive gear 204. An air pressure bearing plate 206 is fixedly connected to the end of the air pressure bladder 205 away from the drive gear 204. A force-bearing rod 207 is fixedly connected to the side wall of the air pressure bearing plate 206. A drive gear ring 215 is fixedly connected to the outer wall of the drive gear 204. Before use, the device is transported to the required position via internal equipment of the tunnel boring machine. After being fixed in position, the power supply to the power motor 201 and the electric telescopic rod 102 is connected. At this time, the electric telescopic rod 102 will drive the power motor 201 inward. During the movement, the power motor 201 drives the rotary head mechanism 4 to process the external rock layer. When the rotary head mechanism 4 is obstructed by the rock and stops, the reverse force generated by squeezing the rock will act on the drive gear 204. At this time, the drive gear 204 is under force, causing the air pressure bladder 205 to contract, causing the drive gear 204 to move in the direction of the power motor 201. At this time, the drive gear 204 will lose control of the control tube 203, and the slot on the force rod 207 will contact the protrusion on the inner wall of the rotating tube 202. At this time, the rotating tube 202 drives the rotary head mechanism 4 to rotate through the force rod 207 and the drive connector 208 to perform the drilling process on the outer rock wall, so that the equipment can simultaneously cope with the restrictions of mud and rock.

[0023] The control mechanism 2 also includes a drive connector 208 fixedly connected to the side wall of the force rod 207. A return spring 209 is fixedly connected in the groove on the side wall of the drive connector 208. A limit block 210 is fixedly connected to the end of the return spring 209 away from the drive connector 208. A belt 211 is fixedly connected to the side wall of the limit block 210. After cleaning is completed, the connection between the drive tooth ring 215 and the drive tooth groove 302 can be disconnected, so that the electric telescopic rod 102 can be extended outward, forcing the inner wall column 303 to detach from the pipe wall 301, so that the pipe wall 301 and the rotating head pipe 401 form a transmission pipeline. After the above work is completed, the workers will release the grouting pipe 107 from the end of the pipe wall 301, so as to achieve the grouting effect at the front end of the shield machine.

[0024] The control mechanism 2 also includes a second reset spring 212 fixedly connected to the inner wall of the drive connector 208. A pressing plate 213 is fixedly connected to the end of the second reset spring 212 away from the drive connector 208. The pressing plate 213 is slidably connected to a through hole on the side wall of the drive connector 208. A contact ring 214 is fixedly connected to the side wall of the pressing plate 213. The spare tube 3 also includes a connecting groove 304 opened on the end face of the inner wall column 303. A spare connector 305 is fixedly connected to the end of the inner wall column 303 away from the connecting groove 304. Several connecting grooves 306 are opened on the side wall of the spare connector 305. A return spring 307 is fixedly connected to the inner wall of the connecting groove 306. A connecting block 308 is fixedly connected to the end of the return spring 307 away from the spare connector 305.

[0025] The rotating head mechanism 4 also includes a rock rotating head 404 slidably connected to the inner wall of the rotating head tube 401. Several cleaning grooves 409 are provided on the side wall of the rock rotating head 404. A return spring 405 is fixedly connected to the inner wall of the cleaning groove 409. A cleaning plate 406 is fixedly connected to the end of the return spring 405 away from the cleaning groove 409. After drilling is completed, the inner wall column 303 is rotated outward and dislodged by the electric telescopic rod 102 and the power motor 201. At this time, the cleaning plate 406 is subjected to force and rotates and is dragged outward, cleaning and draining the inner wall of the rotating head tube 401 and the inner wall of the tube 301. This avoids the problem that the silt will block the inside of the transmission pipe through the output hole 402 during drilling, which would cause some areas to be unable to be reinforced due to pipe blockage during grouting.

[0026] The rotating head mechanism 4 also includes a second drive tooth groove 407 opened on the outer wall of the rotating head tube 401. A connection port 408 is opened on the tail end face of the rock rotating head 404. The side wall of the cleaning plate 406 is slidably connected to the inner wall of the rotating head tube 401. The outer wall of the second drive tooth groove 407 is meshed with the inner wall of the drive tooth ring 215. When deep grouting is required, after the above drilling is completed, the phenomenon of the sliding plate 103 gradually approaching the fixed plate 101 is used to force the support rod 105 to contact the outer wall of the contact ring 214. At this time, the contact ring 214 will drive the pressing plate 213 to move downward. During the movement, the belt 211 is affected by the tensile force, which forces the limiting block 210 to retract inward, so that the drive connector 2 08 loses control of the rock drill head 404. At this time, as the electric telescopic rod 102 moves outward, the drive gear ring 215 also loses its restriction on the drive tooth groove 407, completing the autonomous disengagement of the drill bit. At this time, as the sliding plate 103 continues to retreat, after the sliding plate 103 moves outward, the sliding plate 103 will lose its restriction on the spare tube 3, causing the spare tube 3 to roll onto the surface of the support frame 108 and the control tube 203. At this time, as the drive gear ring 215 rotates, the drive tooth groove 302 is squeezed and rotated, causing the drive tooth groove 302 to connect with the drive gear ring 215, and causing the spare connector 305 to connect with the connection port 408, realizing the automatic extension of the pipeline and reducing manual intervention.

[0027] A specific application of this embodiment is as follows: Before use, the present invention is transported to the required position via the internal equipment of the tunnel boring machine. After fixing the position, the drive tooth groove 407 and the connecting port 408 are inserted into the inner wall of the drive tooth ring 215, and the power supply of the power motor 201 and the electric telescopic rod 102 is turned on. At this time, the electric telescopic rod 102 will drive the power motor 201 to move inward. At this time, the power motor 201 drives the rotating head mechanism 4 to process the external rock layer. When the rotating head mechanism 4 is obstructed by the rock and stops, the reverse force generated by squeezing the rock will act on the drive gear 204. At this time, the drive gear 204 is subjected to force, causing the air pressure bladder 205 to contract, causing the drive gear 204 to move in the direction of the power motor 201. At this time, the drive gear 204 will lose control of the control tube 203, and the groove on the force rod 207 will contact the protrusion on the inner wall of the rotating tube 202. Figure 5As shown, at this time, the rotating tube 202 drives the rock rotating head 404 to rotate through the force rod 207 and the drive connector 208. At this time, the rock rotating head 404 is subjected to the pressure of the power motor 201 and extends outward along the inner wall of the rotating head tube 401. The drill bit position of the rock rotating head 404 will exceed the position of the silt rotating head 403 and perform a drilling process on the outer wall of the rock. When deep grouting is required, when the above drilling is completed, the phenomenon of the sliding plate 103 gradually approaching the fixed plate 101 is used to force the support rod 105 to contact the outer wall of the contact ring 214. At this time, the contact ring 214 will drive the pressing plate 213 to move downward. During the movement, the belt 211 is affected by the tensile force, forcing the limit block 210 to move downward. The inward contraction causes the drive connector 208 to lose control of the rock drill head 404. At this time, as the electric telescopic rod 102 moves outward, the drive gear ring 215 also loses its restriction on the drive tooth groove 407, completing the autonomous disengagement of the drill bit. At this time, as the sliding plate 103 continues to retreat, after the sliding plate 103 moves outward, the sliding plate 103 will lose its restriction on the spare tube 3, causing the spare tube 3 to roll onto the surface of the support frame 108 and the control tube 203. At this time, as the drive gear ring 215 rotates, the drive tooth groove 302 is squeezed and rotated, causing the drive tooth groove 302 to connect with the drive gear ring 215, and causing the spare connector 305 to connect with the connection port 408, realizing the automatic extension of the pipeline.

[0028] After cleaning is completed, the connection between the drive gear ring 215 and the drive gear groove 302 can be disconnected, allowing the electric telescopic rod 102 to extend outward, forcing the inner wall column 303 to detach from the pipe wall 301, so that the pipe wall 301 and the rotary pipe 401 form a transmission pipeline. After completing the above work, the workers will release the end of the grouting pipe 107 from the pipe wall 301. After drilling is completed, the inner wall column 303 is rotated outward and removed by the electric telescopic rod 102 and the power motor 201. At this time, the cleaning plate 406 is subjected to force and rotates and is dragged outward, cleaning and draining the inner wall of the rotary pipe 401 and the pipe wall 301. This prevents sludge from blocking the inside of the transmission pipe through the output hole 402 during drilling, which could cause problems such as the inability to reinforce certain areas due to pipe blockage during grouting.

[0029] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pre-grouting reinforcement device for a tunnel boring machine, comprising an impact mechanism (1), the impact mechanism (1) further comprising a fixing plate (101), an electric telescopic rod (102) fixedly connected to the side wall of the fixing plate (101), a sliding plate (103) fixedly connected to the end of the electric telescopic rod (102) away from the fixing plate (101), and an equipment bracket (104) fixedly connected to the side wall of the fixing plate (101), characterized in that, Also includes: The control mechanism (2) includes a power motor (201) fixedly connected to the side wall of the sliding plate (103), a rotating tube (202) rotatably connected to the outer wall of the power motor (201), and a control tube (203) fixedly connected to the end of the rotating tube (202) away from the power motor (201). The spare tube (3) includes a tube wall (301) placed on the outer wall of the top of the equipment bracket (104). The outer wall of the tube wall (301) is provided with a plurality of drive tooth grooves (302), and the inner wall of the tube wall (301) is slidably connected with an inner wall column (303). The rotating head mechanism (4) includes a rotating head tube (401) that is slidably connected to the inner wall of the through hole on the fixed plate (101). The rotating head tube (401) has several output holes (402) on its side wall. The front end of the rotating head tube (401) is fixedly connected to a sludge rotating head (403). The control mechanism (2) further includes a drive gear (204) meshing with the inner wall of the control tube (203), an air pressure bladder (205) fixedly connected to the side wall of the drive gear (204), an air pressure receiving plate (206) fixedly connected to the end of the air pressure bladder (205) away from the drive gear (204), a force-bearing rod (207) fixedly connected to the side wall of the air pressure receiving plate (206), and a drive gear ring (215) fixedly connected to the outer wall of the drive gear (204). The rotating head mechanism (4) also includes a rock rotating head (404) that is slidably connected to the inner wall of the rotating head tube (401).

2. The advanced grouting reinforcement device for a tunnel boring machine according to claim 1, characterized in that: The impact mechanism (1) further includes a support rod (105) fixedly connected to the side wall of the fixed plate (101), a fixed bracket (106) fixedly connected to the top of the fixed plate (101), a grouting pipe (107) fixedly connected to the inner wall of the through hole on the fixed bracket (106), and a support frame (108) fixedly connected to the side wall of the fixed plate (101).

3. The advanced grouting reinforcement device for a tunnel boring machine according to claim 2, characterized in that: The control mechanism (2) further includes a drive connector (208) fixedly connected to the side wall of the force rod (207). A return spring (209) is fixedly connected in the groove on the side wall of the drive connector (208). A limit block (210) is fixedly connected to the end of the return spring (209) away from the drive connector (208). A belt (211) is fixedly connected to the side wall of the limit block (210).

4. The advanced grouting reinforcement device for a tunnel boring machine according to claim 3, characterized in that: The control mechanism (2) further includes a second reset spring (212) fixedly connected to the inner wall of the drive connector (208). A pressing plate (213) is fixedly connected to one end of the second reset spring (212) away from the drive connector (208). The pressing plate (213) is slidably connected to a through hole on the side wall of the drive connector (208). A contact ring (214) is fixedly connected to the side wall of the pressing plate (213).

5. The advanced grouting reinforcement device for a tunnel boring machine according to claim 4, characterized in that: The spare tube (3) also includes a connecting groove (304) opened on the end face of the inner wall column (303). A spare connector (305) is fixedly connected to one end of the inner wall column (303) away from the connecting groove (304). A plurality of connecting grooves (306) are opened on the side wall of the spare connector (305). A reset spring three (307) is fixedly connected to the inner wall of the connecting groove (306). A connecting block (308) is fixedly connected to one end of the reset spring three (307) away from the spare connector (305).

6. The advanced grouting reinforcement device for a tunnel boring machine according to claim 5, characterized in that: The rotating head mechanism (4) also includes several cleaning grooves (409) opened on the side wall of the rock rotating head (404). A return spring four (405) is fixedly connected to the inner wall of the cleaning groove (409), and a cleaning plate (406) is fixedly connected to the end of the return spring four (405) away from the cleaning groove (409).

7. The advanced grouting reinforcement device for a tunnel boring machine according to claim 6, characterized in that: The rotating head mechanism (4) also includes a second drive tooth groove (407) opened on the outer wall of the rotating head tube (401), a connection port (408) is opened on the tail end face of the rock rotating head (404), the side wall of the cleaning plate (406) is slidably connected to the inner wall of the rotating head tube (401), and the outer wall of the second drive tooth groove (407) is meshed with the inner wall of the drive tooth ring (215).

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