Shield tunneling advance drilling and grouting construction device

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 which comprises a mounting frame, a pitching mechanism and a drilling and grouting mechanism, the pitching mechanism comprises a pitching frame and a pitching hydraulic cylinder, the drilling and grouting mechanism comprises a propelling beam, one end of the mounting frame can be connected with a segment erector, and the other end of the mounting frame can be connected with the segment erector. The pitching frame is installed at the other end of the installation frame, the propelling beam is rotatably connected with the pitching frame, the two ends of the pitching hydraulic cylinder are rotatably connected with the propelling beam and the pitching frame respectively, a pressing fixing plate is arranged on the pitching frame, and the pressing fixing plate can be pressed at the front end of an installed tunnel segment through a shoe oil cylinder of a shield tunneling machine during construction. Therefore, the whole device is fixed, and the situation that vibration generated in the drilling and grouting construction process is directly conducted to the segment assembling machine, and consequently the segment assembling machine is damaged is reduced and avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shield advance drilling and grouting construction, in particular to a shield tunneling advance drilling and grouting construction device. Background Art

[0002] During the shield tunneling construction process, due to the complex geological conditions of the tunnel surrounding rock, the preliminary geological exploration cannot provide a detailed understanding of the geological conditions of the entire mountain, and unpredictable geological disasters often occur. It is necessary to carry out advanced geological forecasts simultaneously during the excavation process, and use advanced drilling rigs to conduct advanced drilling or grouting reinforcement of the weak geology ahead. The advanced hole position of the shield tunneling machine is located on the periphery of the shield shell and is inclined toward the outside of the tunnel. Due to the relatively narrow structural space inside the shield tunneling machine, it brings certain difficulties to the rooting and installation of the advanced drilling rig. The existing technology is to directly fix the advanced drilling rig on the segment assembly machine for advanced drilling and grouting construction. The advanced drilling rig vibrates when working, and these vibrations will be transmitted to the segment assembly machine through the connection between the advanced drilling rig and the segment assembly machine, which will inevitably cause damage to the segment assembly machine. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a shield tunneling advance drilling and grouting construction device, which, before the advance drilling and grouting construction, presses the pitch frame onto the installed tunnel segment through the shield machine shoe cylinder, thereby fixing the drilling and grouting mechanism to reduce and avoid the vibration generated during the drilling and grouting construction being directly transmitted to the segment assembling machine and causing damage to the segment assembling machine.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A shield tunneling advance drilling and injection construction device comprises a mounting frame, a pitch mechanism and a drilling and injection mechanism; the pitch mechanism comprises a pitch frame and a pitch hydraulic cylinder, the drilling and injection mechanism comprises a propulsion beam, one end of the mounting frame can be connected to a segment assembly machine, the pitch frame is installed on the other end of the mounting frame, the propulsion beam is rotatably connected to the pitch frame, and the two ends of the pitch hydraulic cylinder are rotatably connected to the propulsion beam and the pitch frame respectively; a clamping and fixing plate is provided on the pitch frame, one side of the clamping and fixing plate is adapted to the shield machine shoe cylinder, and the other side of the clamping and fixing plate is adapted to the front end of the installed tunnel segment.

[0006] Furthermore, it also includes a shock absorbing plate, and the pitch frame and the mounting frame are fixedly connected via the shock absorbing plate.

[0007] Furthermore, the drilling and injection mechanism includes a rock drill and a clamping device, wherein the rock drill is slidably arranged on the propulsion beam, and the clamping device is fixedly installed at one end of the propulsion beam, and the clamping device is arranged in front of the output end of the rock drill.

[0008] Furthermore, the drilling and injection mechanism also includes a grouting mechanism, which includes a grouting mechanism and a connecting shaft, wherein the connecting shaft passes through the grouting shell and is rotatably connected to the grouting shell. A cavity is provided in the grouting shell, and a grouting hole is machined inwardly at one end of the connecting shaft, and the grouting hole is connected to the cavity. A grouting joint connected to the cavity is also provided on the grouting shell; the grouting mechanism is arranged between the clamping device and the rock drill, the grouting shell is slidably connected to the propulsion beam, an end of the connecting shaft close to the grouting hole is machined with an external thread, and the other end of the connecting shaft is connected to the output end of the rock drill.

[0009] Furthermore, the drilling and injection mechanism also includes a support plate and an adjustment hydraulic cylinder, the support plate is rotatably connected to the pitch frame, the two ends of the pitch hydraulic cylinder are respectively rotatably connected to the support plate and the pitch frame, the propulsion beam is slidably arranged on the support plate, and the two ends of the adjustment hydraulic cylinder are respectively connected to the support plate and the propulsion beam.

[0010] The beneficial effects of the utility model are:

[0011] The shield tunneling advance drilling and injection construction device includes a mounting frame, a pitch mechanism and a drilling and injection mechanism. The drilling and injection mechanism is mounted on the pitch mechanism. The pitch mechanism can be mounted on the segment assembly machine through the mounting frame. The pitch mechanism and the mounting frame can be transported to the hole mouth area of ​​the advance hole to be constructed through the segment assembly machine. The angle of the drilling and injection mechanism can be adjusted through the pitch mechanism, and the drilling and injection construction of the advance hole can be realized through the drilling and injection mechanism. On this basis, a clamping plate is arranged on the pitch frame. Before the drilling and injection construction is implemented, the piston rod of the shield machine shoe oil cylinder extends to clamp the clamping plate on the front end of the installed tunnel segment. Therefore, the fixing point of the pitch mechanism and the drilling and injection mechanism is mainly located at the position of the clamping plate rather than the connection position of the pitch mechanism and the mounting frame, which can reduce or avoid the vibration generated by the drilling and injection mechanism during the drilling and injection construction process directly transmitted to the segment assembly machine and causing damage to the segment assembly machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a shield tunneling advance drilling and injection construction device of the utility model;

[0013] Figure 2 This is a schematic diagram of the use status of a shield tunneling advance drilling and injection construction device of the utility model;

[0014] Figure 3 It is a schematic diagram of the assembly structure of the pitch mechanism and the drilling and injection mechanism in the utility model;

[0015] Figure 4 for Figure 3Schematic diagram of another direction;

[0016] Figure 5 It is a schematic diagram of the internal structure of the grouting mechanism in the utility model;

[0017] In the figure, 1-drilling and grouting mechanism, 2-pitch mechanism, 3-mounting frame, 4-segment assembly machine, 5-tunnel segment, 6-advance hole, 7-shock-absorbing plate, 11-advance beam, 12-rock drill, 13-clamping mechanism, 14-grouting shell, 15-connecting shaft, 16-cavity, 17-grouting hole, 18-grouting joint, 19-support plate, 20-adjusting hydraulic cylinder, 21-pitch frame, 22-pitch hydraulic cylinder, 23-pressing fixing plate. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0019] like Figures 1 to 5 As shown, a shield tunneling advance drilling and injection construction device comprises a mounting frame 3, a pitching mechanism 2 and a drilling and injection mechanism 1, wherein the pitching mechanism 2 comprises a pitching frame 21 and a pitching hydraulic cylinder 22, and the drilling and injection mechanism 1 comprises a propulsion beam 11. One end of the mounting frame 3 can be connected to a segment assembly machine 4, and the pitching frame 21 is mounted on the other end of the mounting frame 3. When the construction device is mounted on the segment assembly machine 4, the segment assembly machine 4 can drive the entire construction device to move along the tunneling direction and the circumferential direction during tunnel excavation to adjust the drilling and injection position (the drilling and injection position makes the front end of the propulsion beam 11 align with the orifice position of the advance hole 6); the propulsion beam 11 is rotatably connected to the pitching frame 21, and the two ends of the pitching hydraulic cylinder 22 are rotatably connected to the propulsion beam 11 and the pitching frame 21 respectively. Under the extension and retraction of the pitching hydraulic cylinder 22, the inclination angle of the propulsion beam 11 on the pitching frame 21 can be changed, thereby adjusting the drilling and injection direction (the drilling and injection direction makes the propulsion beam 11 parallel to the axis of the advance hole 6). A clamping plate 23 is provided on the pitch frame 21 , one side of the clamping plate 23 is matched with the shield machine shoe cylinder, and the other side of the clamping plate 23 is matched with the front end of the installed tunnel segment 5 .

[0020] like Figure 2 As shown, the shield tunneling advance drilling and grouting construction device needs to be used together with the shield machine shoe cylinder and the segment assembler 4 when in use. When in use, the construction device is fixedly installed on the segment assembler 4 through the mounting frame 3. The specific construction method includes the following steps:

[0021] S1. The axial and circumferential positions of the entire construction device in the tunnel are adjusted by the segment assembler 4, and the drilling angle is adjusted by the pitch mechanism 2, so that the drilling direction of the drilling mechanism 1 is facing the position of the advance hole 6.

[0022] S2, extending the piston rods of the oil cylinders of the shield machines in the construction device area, pressing the clamping fixing plate 23 against the front end of the installed tunnel segment 5, and fixing the pitch frame 21 by this pressing method.

[0023] S3, the drilling and injection mechanism 1 starts working and completes the drilling and injection construction process.

[0024] It can be seen from the above working process that before the drilling mechanism 1 of the shield excavation advance drilling and grouting construction device is started to carry out drilling and grouting construction, the shield machine shoe cylinder first roots and fixes the pitch frame 21 by pressing, thereby effectively reducing and avoiding the vibration generated by the drilling mechanism 1 during the drilling and grouting construction process directly transmitted to the segment assembler 4 and causing damage to the segment assembler 4.

[0025] It should be noted that the aforementioned shield machine shoe cylinder is a self-owned component of the shield machine, also called a segment pushing cylinder. There are multiple arranged along the circumference of the shield machine, which are used for the splicing and installation of the tunnel segments 5; the shoe cylinder is arranged parallel to the axial direction of the tunnel, and when the piston rod is extended, it is just facing the front end of the installed tunnel segment 5. During the advance drilling and injection construction in front of the shield, the tunnel segment 5 has been assembled in the rear, and by setting the clamping and fixing plate 23, it can be clamped and fixed by one or more shoe cylinders in the area where it is located. Therefore, in the narrow space inside the shield tunneling machine, without adding too much structure, the switching of the fixing mode of the construction device is realized, so that the main fixing point of the pitch frame 21 is at the position of the clamping and fixing plate 23 rather than the connection between the pitch frame 21 and the mounting frame 3, so as to reduce or avoid the damage of the segment assembly machine 4 caused by the transmission of vibration during the construction of the drilling and injection mechanism 1. As for the influence of the vibration generated during the construction process on the clamping and fixing method, since the shield machine shoe cylinder is originally a hydraulic cylinder structure, it will not be damaged by rigid vibration and can also play a certain shock-absorbing function.

[0026] In specific implementation, the shield tunneling advance drilling and injection construction device is also provided with a shock absorbing plate 7, and the pitch frame 21 and the mounting frame 3 are fixedly connected through the shock absorbing plate 7. The shock absorbing plate 7 is made of a material with certain rigidity and elastic shock absorbing characteristics, which, on the one hand, ensures that the pitch mechanism 2 and the drilling and injection mechanism 1 can be supported and position-adjusted before the drilling and injection construction; on the other hand, during the drilling and injection construction process, the vibration generated by the drilling and injection mechanism 1 is mainly transmitted to the direction of the clamped and fixed clamping plate 23, so as to reduce or avoid transmission to the segment assembly machine 4 and cause damage to the pipeline assembly machine 4.

[0027] In specific implementation, the aforementioned drilling and injection mechanism 1 includes a rock drill 12 and a clamping device 13. The rock drill 12 can be slidably arranged on the propulsion beam 11, and the clamping device 13 is fixedly installed at one end of the propulsion beam 12. The clamping device 13 is arranged in front of the output end of the rock drill 12. The output end of the rock drill 12 can be connected to a drill rod, and the drill rod is driven to rotate by the rock drill; the rock drill 12 can also slide on the propulsion beam 11 under the drive of a driving mechanism (such as a driving hydraulic cylinder, a chain transmission mechanism driven by a motor, etc.), thereby completing the drilling process. The aforementioned clamping device 13 can clamp or loosen the drill rod to facilitate the extension or disassembly of the drill rod.

[0028] Furthermore, the drilling and injection mechanism 1 also includes a grouting mechanism, such as Figure 5 As shown, the grouting mechanism includes a grouting shell 14 and a connecting shaft 15, the connecting shaft 15 passes through the grouting shell 14, the connecting shaft 15 is rotatably connected to the grouting shell 14, a cavity 16 is arranged in the grouting shell 14, one end of the connecting shaft 15 is processed inwardly with a grouting hole 17, the grouting hole 17 is connected to the cavity 16, and a grouting joint 18 connected to the cavity 16 is also arranged on the grouting shell 14. The grouting mechanism is arranged between the clamping device 13 and the rock drill 12, the grouting shell 14 is slidably connected to the propulsion beam 11, one end of the connecting shaft 15 near the grouting hole 17 is processed with an external thread, and the other end of the connecting shaft 15 is connected to the output end of the rock drill 12. The end of the connecting shaft 15 processed with the external thread is used to connect the drill rod to complete the drilling process or to connect the grouting pipe to complete the grouting process. Specifically, when connecting the drill rod, the end of the drill rod is threadedly connected to the front end of the connecting shaft 15, and when the rock drill 12 rotates, the drill rod is driven to rotate through the connecting shaft 15, and the rock drill 12 and the grouting shell 14 slide together on the propulsion beam 11, thereby realizing the drilling process; when connecting the grouting pipe, the end of the grouting pipe is threadedly connected to the front end of the connecting shaft 15, and the grouting pipe can be sent into the drilled hole by sliding the rock drill 12 and the grouting shell 14 together on the propulsion beam 11. During the feeding process, the external slurry can be pumped to the grouting pipe through the grouting joint 18, the cavity 16, and the grouting hole 17 in sequence to complete the grouting process. It can be seen that by setting up the grouting mechanism, the construction device has both the functions of advanced hole drilling and grouting reinforcement. It should also be noted that during grouting, since the diameter of the grouting pipe is smaller than the diameter of the borehole, the axis of the grouting pipe section that has been pushed into the borehole will deviate from the center of the borehole under the action of its own weight. According to the existing grouting method, it will be difficult to ensure the grouting quality after the grouting pipe is fully installed. Through the above-mentioned arrangement, an appropriate amount of grouting can be carried out simultaneously while the grouting pipe is pushed into the borehole. The injected slurry can support the part of the grouting pipe pushed into the borehole, so that the axis of the grouting pipe basically coincides with the axis of the borehole, thereby ensuring the grouting quality.

[0029] In specific implementation, Figure 4As shown, the aforementioned drilling and injection mechanism 1 also includes a support plate 19 and an adjustment hydraulic cylinder 20. The support plate 19 is rotatably connected to the pitch frame 21. The two ends of the pitch hydraulic cylinder 22 are rotatably connected to the support plate 19 and the pitch frame 21, respectively. When the piston rod of the pitch hydraulic cylinder 22 is extended and retracted, the inclination angle of the support plate 19 on the pitch frame 21 can be adjusted to adjust the inclination angle of the propulsion beam 11. The propulsion beam 11 is slidably arranged on the support plate 19, and the two ends of the adjustment hydraulic cylinder 20 are respectively connected to the support plate 19 and the propulsion beam 11. When the piston rod of the adjustment hydraulic cylinder 20 is extended and retracted, the propulsion beam 11 can be driven to slide on the support plate 19, thereby adjusting the distance between the front end of the propulsion beam 11 and the orifice of the advance hole 6.

[0030] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A shield tunneling advance drilling and injection construction device, characterized in that: It includes a mounting frame, a pitch mechanism and a drilling and injection mechanism; The pitch mechanism includes a pitch frame and a pitch hydraulic cylinder, the drilling and injection mechanism includes a propulsion beam, one end of the mounting frame can be connected to the segment assembly machine, the pitch frame is mounted on the other end of the mounting frame, the propulsion beam is rotatably connected to the pitch frame, and both ends of the pitch hydraulic cylinder are rotatably connected to the propulsion beam and the pitch frame respectively; A clamping and fixing plate is arranged on the pitch frame, one side of the clamping and fixing plate is matched with the oil cylinder of the shield machine shoe, and the other side of the clamping and fixing plate is matched with the front end of the installed tunnel segment.

2. A shield tunneling advance drilling and injection construction device according to claim 1, characterized in that: It also includes a shock absorbing plate, through which the pitch frame and the mounting frame are fixedly connected.

3. A shield tunneling advance drilling and injection construction device according to claim 1, characterized in that: The drilling and injection mechanism comprises a rock drill and a clamping device, wherein the rock drill is slidably arranged on the propulsion beam, the clamping device is fixedly mounted on one end of the propulsion beam, and the clamping device is arranged in front of the output end of the rock drill.

4. A shield tunneling advance drilling and injection construction device according to claim 3, characterized in that: The drilling and injection mechanism also includes a grouting mechanism, which includes a grouting shell and a connecting shaft, wherein the connecting shaft penetrates the grouting shell and is rotatably connected to the grouting shell. A cavity is provided in the grouting shell, and a grouting hole is machined inwardly at one end of the connecting shaft, wherein the grouting hole is connected to the cavity, and a grouting joint connected to the cavity is also provided on the grouting shell; The grouting mechanism is arranged between the clamping device and the rock drill, the grouting shell is slidably connected to the propulsion beam, one end of the connecting shaft close to the grouting hole is processed with an external thread, and the other end of the connecting shaft is connected to the output end of the rock drill.

5. A shield tunneling advance drilling and injection construction device according to claim 4, characterized in that: The drilling and injection mechanism also includes a support plate and an adjustment hydraulic cylinder. The support plate is rotatably connected to the pitch frame. Two ends of the pitch hydraulic cylinder are rotatably connected to the support plate and the pitch frame respectively. The propulsion beam is slidably arranged on the support plate, and two ends of the adjustment hydraulic cylinder are respectively connected to the support plate and the propulsion beam.

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