Shield tunneling advance drilling and grouting construction device facilitating radial adjustment of drilling and grouting direction

Abstract

The utility model relates to the technical field of shield advance drilling and grouting construction, and discloses a shield tunneling advance drilling and grouting construction device capable of conveniently adjusting drilling and grouting directions in the radial direction, which comprises a mounting frame, an outer frame, a pitching frame, an adjusting mechanism and a drilling and grouting mechanism, the outer frame is arranged at the top end of the mounting frame in a sliding mode, the pitching frame is arranged in the outer frame in a sliding mode, the drilling and injecting mechanism is rotatably connected with the pitching frame, the outer frame comprises a pressing and fixing plate, one side of the pressing and fixing plate is matched with a shoe oil cylinder of a shield tunneling machine, and the other side of the pressing and fixing plate is matched with the front end of a mounted tunnel segment. The sliding direction of the outer frame and the sliding direction of the pitching frame are both parallel to the telescopic direction of a shoe oil cylinder of the shield tunneling machine, and the adjusting mechanism is used for adjusting the pitching frame to slide on the outer frame. According to the device, damage caused by direct conduction of vibration to the segment assembling machine during construction can be avoided, and radial positioning in hole adjustment is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling advance drilling and grouting construction technology, specifically to a shield tunneling advance drilling and grouting construction device that facilitates radial adjustment of the drilling and grouting direction. Background Technology

[0002] In existing technologies, during shield tunneling advance drilling and injection construction, the advance drilling rig is usually directly fixed on the segment assembly machine for advance drilling and injection. Since the advance drilling rig vibrates during operation, these vibrations are transmitted to the segment assembly machine through the connection between the advance drilling rig and the segment assembly machine, inevitably causing damage to the segment assembly machine.

[0003] In response, we have developed a shield tunneling pre-drilling construction device and method (see Chinese Invention Patent, Application No. 202410778382.4). Before drilling construction, the device can press the pitching frame onto the installed tunnel segments through the shield machine's foot shoe cylinder, thereby fixing the drilling mechanism and simultaneously disconnecting the pitching frame from the segment assembly machine. This effectively prevents the vibration generated during drilling construction from being directly transmitted to the segment assembly machine and causing damage to it.

[0004] When using this shield tunneling pre-drilling and grouting construction device, the hole alignment is performed first (this hole alignment refers to the alignment adjustment between the front end of the drilling and grouting mechanism and the hole opening to be drilled. During the adjustment, the mounting frame, pitching frame, drilling and grouting mechanism, and segment assembly machine of the shield tunneling pre-drilling and grouting construction device are connected as a whole. The segment assembly machine drives the device to rotate circumferentially to achieve circumferential positioning of the hole opening; the segment assembly machine drives the device to move axially, and at the same time adjusts the pitch angle of the drilling and grouting mechanism on the pitching frame to achieve radial positioning of the hole opening). Then, the foot shoe cylinder presses the clamping and fixing plate on the end of the tunnel segment to switch the anchoring position. During this switching process, there is axial displacement between the pitching frame and the support frame. This makes the radial positioning process in the previous hole alignment only a rough estimate. Finally, when drilling and grouting are carried out after the foot shoe cylinder has clamped and fixed the plate, it is difficult to guarantee the radial alignment accuracy.

[0005] In addition, when the above-mentioned shield tunneling pre-drilling construction device is in use, its support frame is connected to the working beam of the segment assembly machine in the form of a mushroom-head lifting clamp, which is similar to the structure of the segment assembly machine grabbing the segment (a slot is set at the bottom of the working beam, and support cylinders are set on both sides of the slot. The top of the mushroom-head lifting device is inserted into the slot, and the piston rods of the support cylinders on both sides extend to tighten and achieve the clamping connection). Since the mushroom-head lifting device is a single-point clamping structure, it does not restrict the degree of freedom of rotation, and the original equipment is difficult to guarantee the connection accuracy when connecting. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a shield tunneling advance drilling construction device that facilitates radial adjustment of the drilling direction.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A shield tunneling advance drilling and injection construction device for facilitating radial adjustment of the drilling and injection direction includes an installation frame, an elevation mechanism, and a drilling and injection mechanism. The elevation mechanism includes an elevation frame and an elevation hydraulic cylinder. The drilling and injection mechanism includes a propulsion beam, which is rotatably connected to the elevation frame. Both ends of the elevation hydraulic cylinder are rotatably connected to the propulsion beam and the elevation frame, respectively. One end of the installation frame can be connected to a segment assembly machine.

[0009] It also includes an outer frame, an adjustment mechanism, and several locking mechanisms;

[0010] The outer frame is slidably connected to the mounting bracket, and the pitching frame is slidably connected to the outer frame. The sliding direction of the outer frame and the sliding direction of the pitching frame are both parallel to the extension and retraction direction of the piston rod of the shield machine's foot shoe cylinder.

[0011] The outer frame includes a clamping and fixing plate, one side of which is adapted to the shield machine's foot shoe cylinder, and the other side of which is adapted to the front end of the installed tunnel segment.

[0012] The locking mechanism includes a locking block, a locking groove, and a spring. The locking groove is fixedly mounted on the outer frame. The locking block is fixedly connected to the mounting bracket. The locking groove is adapted to the locking block. The locking block is located on the side of the locking groove near the shield machine's foot shoe cylinder. The spring is used to provide elastic force to press the locking groove towards the locking block.

[0013] The adjustment mechanism includes an adjustment motor and a lead screw. The adjustment motor is fixedly connected to the pitch frame, and the lead screw is rotatably connected to the pitch frame. The adjustment motor is used to drive the lead screw to rotate, and the outer frame is threadedly connected to the lead screw.

[0014] Specifically, the outer frame also includes two outer supports, which are symmetrically arranged on both sides of the pitch frame. The top of the outer supports is fixedly connected to the clamping and fixing plate. The outer supports are provided with sliding grooves, and a sliding plate is fixedly arranged on the outside of the pitch frame. The sliding plate is slidably adapted to the sliding groove.

[0015] Specifically, a number of sliding rods are fixedly installed at the top of the pitching frame, and a number of sliding holes are opened on the clamping and fixing plate, with the sliding rods respectively slidingly adapted to the sliding holes.

[0016] Specifically, an internally threaded cylinder is fixedly connected to the middle of the clamping and fixing plate, and the lead screw passes through the clamping and fixing plate and is threadedly connected to the internally threaded cylinder.

[0017] Specifically, the adjusting motor is fixedly installed at the middle of the top of the pitch frame, and gear A is fixedly sleeved on the output shaft end of the adjusting motor. Gear B is fixedly sleeved on one end of the lead screw, and gear A and gear B mesh.

[0018] Specifically, the mounting frame includes an arc-shaped base and two uprights. The two uprights are symmetrically arranged along the center line of the arc-shaped base. The bottom end of the upright is fixedly connected to the arc-shaped base, and the top end of the upright is fixedly provided with the locking block.

[0019] The top surface of the arc-shaped seat is designed to match the shape of the inner side of the tube segment, and a mushroom-head hanger is fixedly installed at the center of the arc surface of the arc-shaped seat.

[0020] Furthermore, two ear plates are fixedly provided at the tail end of the arc-shaped seat. The two ear plates are symmetrically arranged along the center line of the arc-shaped seat, and threaded holes are machined on the ear plates.

[0021] The beneficial effects of this utility model are:

[0022] This shield tunneling pre-drilling construction device, which facilitates radial adjustment of the drilling direction, is an improved version of the original equipment (see Chinese Invention Patent, Application No. 202410778382.4, which describes a shield tunneling pre-drilling construction device). It adds an outer frame and an adjustment mechanism to the original equipment, allowing the pitching frame to slide against the outer frame and the outer frame to slide against the mounting frame. The locking groove and clamping plate of the original equipment are located on the outer frame. The adjustment mechanism includes an adjustment motor and a lead screw. The adjustment motor is fixedly connected to the pitching frame, and the lead screw is rotatably connected to the pitching frame. The adjustment motor drives the lead screw to rotate, and the outer frame is threadedly connected to the lead screw. The aforementioned lead screw, pitching frame, and outer frame form a lead screw and nut mechanism. When the adjusting motor is not working, its self-locking action keeps the pitching frame and outer frame relatively fixed, making them a single unit. This advanced drilling and grouting construction device operates in the same manner as the original equipment. The clamping plate can be pressed against the end of the installed segment by the shield machine's foot shoe cylinder to switch the anchoring position of the drilling and grouting mechanism, preventing the vibration generated by the drilling and grouting mechanism during drilling and grouting from being directly transmitted to the segment assembly machine and causing damage. Compared to the original equipment, after the piston rod of the shield machine's foot shoe cylinder extends and presses the clamping plate against the end of the installed segment, the adjusting motor can be started to drive the pitching frame to slide along a direction parallel to the tunnel axis, achieving fine-tuning of the position of the drilling and grouting mechanism along the tunnel axis. Combined with the pitch angle adjustment of the pitching hydraulic cylinder, the radial alignment of the front end of the drilling and grouting mechanism with the borehole opening can be directly achieved, ensuring the accuracy of the radial alignment. In addition, two ear plates are symmetrically arranged on the mounting frame. The ear plates are machined with threaded holes. When installing the mounting frame with the working beam of the segment assembly machine, the mounting frame can be quickly adjusted by threading the set screws into the threaded holes of the two ear plates. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the shield tunneling advance drilling and injection construction device of this utility model, which facilitates radial adjustment of the drilling and injection direction.

[0024] Figure 2 This is a schematic diagram of the assembly structure of the outer frame and the pitching frame in the shield tunneling advance drilling construction device for easy radial adjustment of the drilling direction according to this utility model.

[0025] Figure 3 This is a schematic diagram of the implementation structure of the outer frame in the shield tunneling advance drilling construction device of this utility model, which facilitates radial adjustment of the drilling direction.

[0026] Figure 4 This is a schematic diagram of the implementation structure of the pitching frame in the shield tunneling advance drilling construction device for easy radial adjustment of the drilling direction according to this utility model;

[0027] In the diagram, 1-Pitching frame, 2-Pitching hydraulic cylinder, 3-Propulsion beam, 4-Pressure fixing plate, 5-Clocking block, 6-Clocking groove, 7-Adjusting motor, 8-Screw rod, 9-Outer support, 10-Slide groove, 11-Slide plate, 12-Internal threaded cylinder, 13-Slide rod, 14-Arc-shaped seat, 15-Upright frame, 16-Mushroom head lifting device, 17-Ear plate. Detailed Implementation

[0028] The technical solution of this utility model is described in further detail below with reference to the accompanying drawings, but the scope of protection of this utility model is not limited to the following description.

[0029] like Figures 1 to 4 As shown, the shield tunneling pre-drilling construction device that facilitates radial adjustment of the drilling direction is an improved model based on the original equipment (see the shield tunneling pre-drilling construction device in Chinese Invention Patent Application No. 202410778382.4). The original equipment includes a mounting frame, a pitching mechanism, and a drilling mechanism. The pitching mechanism includes a pitching frame 1 and a pitching hydraulic cylinder 2. The drilling mechanism includes a propulsion beam 3, which is rotatably connected to the pitching frame 1. Both ends of the pitching hydraulic cylinder 2 are rotatably connected to the propulsion beam 3 and the pitching frame 1, respectively. When the piston rod of the pitching hydraulic cylinder 2 extends or retracts, it can adjust the pitch angle of the propulsion beam 3 relative to the pitching frame 1.

[0030] Based on this, an outer frame, an adjustment mechanism, and several locking mechanisms are also provided. In application, the bottom end of the mounting frame is installed on the working beam of the tunnel segment assembly machine. The outer frame is slidably connected to the mounting frame, and the pitching frame 1 is slidably connected to the outer frame. The sliding direction of the outer frame and the sliding direction of the pitching frame 1 are both parallel to the extension and retraction direction of the piston rod of the shield machine's foot shoe cylinder. The outer frame includes a clamping and fixing plate 4. One side of the clamping and fixing plate 4 is adapted to the extension and retraction end of the shield machine's foot shoe cylinder (the side of the clamping and fixing plate 4 facing the drilling direction of the drilling mechanism is directly opposite the extension and retraction end of the shield machine's foot shoe cylinder). The other side of the clamping and fixing plate 4 is adapted to the front end of the installed tunnel segment. When the piston rod of the shield machine's foot shoe cylinder extends, it can press the clamping and fixing plate 4 tightly against the end of the installed tunnel segment. The locking mechanism includes a locking block 5, a locking groove 6, and a spring. The locking groove 6 is fixedly mounted on the outer frame. The locking block 5 is fixedly connected to the mounting bracket. The locking groove 6 is adapted to the locking block 5. The locking block 5 is located on the side of the locking groove 6 near the shield machine's foot shoe cylinder. The spring provides the elastic force to press the locking groove 6 towards the locking block 5. The adjustment mechanism includes an adjustment motor 7 and a lead screw 8. The adjustment motor 7 is fixedly connected to the pitch frame 1. The lead screw 8 is rotatably connected to the pitch frame 1. The adjustment motor 7 drives the lead screw 8 to rotate. The outer frame is threadedly connected to the lead screw 8.

[0031] The aforementioned lead screw 8, pitching frame 1, and outer frame form a lead screw and nut mechanism. When the adjusting motor 7 is not working, it can keep the pitching frame 1 and the outer frame relatively fixed under its self-locking action. At this time, the pitching frame 1 and the outer frame are regarded as a whole. The working process of this advanced drilling and grouting construction device is consistent with that of the original equipment. The circumferential hole alignment can be completed by the rotation of the segment assembly machine. The radial hole alignment can be initially completed by the axial movement of the segment assembly machine and the pitching of the propulsion beam 3. The clamping and fixing plate 4 can be pressed against the end of the installed segment by the shield machine's foot shoe cylinder to complete the switching of the rooting and fixing position of the drilling and grouting mechanism. This avoids the vibration generated by the drilling and grouting mechanism during the drilling and grouting construction process from being directly transmitted to the segment assembly machine and causing damage to the segment assembly machine. The specific working process will not be described in detail here.

[0032] Compared to the original equipment, the improved outer frame and adjustment mechanism allow for better control of the tunnel boring machine. After the piston rod of the shield machine's foot shoe cylinder extends and presses the clamping and fixing plate 4 against the installed segment end, i.e., after the outer frame is clamped and fixed, the adjustment motor 7 can be started to drive the lead screw 8 to rotate. Since the lead screw 8 is threadedly connected to the outer frame, it can further drive the pitching frame 1 to slide as a whole, realizing fine-tuning of the position of the drilling mechanism along the tunnel axis. Combined with the pitching angle adjustment of the pitching hydraulic cylinder 2, the radial alignment of the front end of the drilling mechanism with the borehole opening can be directly achieved, ensuring the accuracy of the radial alignment.

[0033] like Figures 2 to 4 As shown, in practical implementation, this shield tunneling advance drilling and injection construction device, which facilitates radial adjustment of the drilling direction, can be directly modified from existing equipment. Specifically:

[0034] In the original equipment, the clamping plate 4 and the pitch frame 1 were rigidly fixed by welding; here, they are separate structures. The outer frame also includes two outer supports 9, which are symmetrically arranged on both sides of the pitch frame. The top of the outer supports 9 is fixedly connected to the clamping plate 4 to form the outer frame. A sliding groove 10 is provided on the outer support 9, and a sliding plate 11 is welded and fixed to the outside of the pitch frame 1. The sliding plate 11 and the sliding groove 10 are slidably matched, thereby realizing the sliding connection between the pitch frame 1 and the outer frame. Several locking blocks 5 with slots 6 are welded to the lower part of the two outer supports 9 respectively.

[0035] Several sliding rods 13 are fixedly installed at the top of the pitch frame 1. These sliding rods 13 can be made of ordinary bar stock. During machining, the middle of the sliding rod 13 is milled smooth and external threads are machined at both ends. Mounting holes are drilled at the top of the pitch frame 1, and the sliding rods 13 are inserted into the mounting holes and tightened at both ends with nuts to complete the installation. Several sliding holes are machined on the clamping and fixing plate 4, and the sliding rods 13 are respectively slidably adapted to the several sliding holes. Through the setting of several sliding rods and the sliding connection between the slide plate 11 and the slide groove 10, the stability of the sliding structure between the pitch frame 1 and the outer frame is enhanced.

[0036] A through hole is machined in the middle of the clamping and fixing plate 4, and an internally threaded cylinder 12 is coaxially fixedly connected to the outside of the through hole. The internally threaded cylinder 12 is made of tubing material, and internal threads are machined inside it during machining. One end of it is machined into a flange shape to facilitate connection with the clamping and fixing plate 4. The lead screw 8 passes through the through hole on the clamping and fixing plate 4 and is threadedly connected to the internally threaded cylinder 12.

[0037] The adjustment motor 7 is fixedly installed at the top center of the pitch frame 1. Gear A is fixedly sleeved on the output shaft end of the adjustment motor 7, and gear B is fixedly sleeved on one end of the lead screw 8. Gear A and gear B mesh. Starting the adjustment motor 7 can drive gear A to rotate, which in turn can drive the lead screw 8 to rotate through gear B.

[0038] Specifically, such as Figure 1 As shown, the mounting frame includes an arc-shaped base 14 and two uprights 15. The two uprights 15 are symmetrically arranged along the center line of the arc-shaped base 14. The bottom end of the uprights 15 is fixedly connected to the arc-shaped base 14. The aforementioned locking blocks 5 are respectively fixedly installed at the top of the two uprights 15. The top surface of the arc-shaped base 14 is provided with an arc surface adapted to the shape of the inner side of the segment. A mushroom-head hanger 16 is fixedly installed at the center of the arc surface of the arc-shaped base 14, so that the bottom inner side of the mounting frame is set with a structure consistent with the shape of the segment, which can facilitate direct installation on the working beam of the segment assembly machine.

[0039] Furthermore, two ear plates 17 are fixedly installed at the tail end of the arc-shaped seat 14. The two ear plates 17 are symmetrically arranged along the center line of the arc-shaped seat 14. Threaded holes are machined on the ear plates 17. When installing the mounting frame with the working beam of the segment assembly machine, set screws can be threaded into the threaded holes of the two ear plates 17. Tightening the set screws allows their front ends to rest against the end of the working beam of the segment assembly machine. The mounting frame can be quickly adjusted by adjusting the two set screws. After the mounting frame and the working beam of the segment assembly machine are successfully installed, the two set screws can be removed.

[0040] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A shield tunneling advance drilling and grouting construction device for facilitating radial adjustment of drilling and grouting direction, comprising a mounting frame, a pitch mechanism and a drilling and grouting mechanism, the pitch mechanism comprising a pitch frame and a pitch hydraulic cylinder, the drilling and grouting mechanism comprising a propulsion beam, the propulsion beam being rotatably connected with the pitch frame, the two ends of the pitch hydraulic cylinder being rotatably connected with the propulsion beam and the pitch frame respectively, one end of the mounting frame being connectable with a segment erector; characterized in that further comprising an outer frame, an adjusting mechanism and a plurality of clamping mechanisms; the outer frame being slidably connected with the mounting frame, the pitch frame being slidably connected with the outer frame, the sliding directions of the outer frame and the pitch frame being parallel to the piston rod extension and retraction direction of a shield machine shoe oil cylinder; the outer frame comprising a pressing and fixing plate, one side of the pressing and fixing plate being adapted to the shield machine shoe oil cylinder, the other side of the pressing and fixing plate being adapted to the front end of a tunnel segment that has been installed; the clamping mechanism comprising a clamping block, a clamping groove and a spring, the clamping groove being fixedly arranged on the outer frame, the clamping block being fixedly connected with the mounting frame, the clamping groove being adapted to the clamping block, the clamping block being arranged on the side of the clamping groove close to the shield machine shoe oil cylinder, the spring being used to provide a spring force for pressing the clamping groove towards the clamping block; the adjusting mechanism comprising an adjusting motor and a lead screw, the adjusting motor being fixedly connected with the pitch frame, the lead screw being rotatably connected with the pitch frame, the adjusting motor being used to drive the lead screw to rotate, the outer frame being threadedly connected with the lead screw.

2. The shield tunneling pre-drilling and grouting construction device for facilitating radial adjustment of drilling and grouting direction according to claim 1, characterized in that, the outer frame further comprising two outer side supports, the two outer side supports being symmetrically arranged on the two sides of the pitch frame, the top end of the outer side support being fixedly connected with the pressing and fixing plate, a sliding groove being formed on the outer side support, a sliding plate being fixedly arranged on the outer side of the pitch frame, the sliding plate being slidably adapted to the sliding groove.

3. The shield tunneling pre-drilling and grouting device for facilitating radial adjustment of drilling and grouting direction according to claim 2, characterized in that, a plurality of sliding rods being fixedly arranged on the top end of the pitch frame, a plurality of sliding holes being formed on the pressing and fixing plate, the plurality of sliding rods being slidably adapted to the plurality of sliding holes respectively.

4. The shield tunneling pre-drilling and grouting device for facilitating radial adjustment of drilling and grouting direction according to claim 3, characterized in that, an internally threaded cylinder being fixedly connected with the middle part of the pressing and fixing plate, the lead screw penetrating through the pressing and fixing plate and being threadedly connected with the internally threaded cylinder.

5. The shield tunneling pre-drilling and grouting construction device for facilitating radial adjustment of drilling and grouting direction according to claim 4, characterized in that, the adjusting motor being fixedly installed on the middle part of the top end of the pitch frame, a gear A being fixedly sleeved on the output shaft end of the adjusting motor, a gear B being fixedly sleeved on one end of the lead screw, the gear A being engaged with the gear B.

6. The shield tunneling pre-drilling and grouting device for facilitating radial adjustment of drilling and grouting direction according to claim 1, characterized in that, the mounting frame comprising an arc-shaped seat and two stands, the two stands being symmetrically arranged along the center line of the arc-shaped seat, the bottom end of the stand being fixedly connected with the arc-shaped seat, the top end of the stand being fixedly provided with the clamping block; the top surface of the arc-shaped seat being provided with an arc surface adapted to the shape of the inner side of the segment, a mushroom head lifting device being fixedly arranged at the center of the arc surface of the arc-shaped seat.

7. The shield tunneling pre-drilling and grouting construction device for facilitating radial adjustment of drilling and grouting direction according to claim 6, characterized in that, two ear plates being fixedly arranged at the tail end of the arc-shaped seat, the two ear plates being symmetrically arranged along the center line of the arc-shaped seat, threaded holes being formed on the ear plates.

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