Support mechanism for tunnel excavation and tunnel excavation device

Abstract

The application discloses a support mechanism for tunnel excavation and a tunnel excavation device. The support mechanism for tunnel excavation comprises a support frame, a mounting frame, a driving assembly, wherein the mounting frame is used for mounting a coring machine, the mounting frame is rotatably arranged on the support frame so that the coring machine can rotate around the support frame, and the driving assembly is arranged on the support frame and used for driving the mounting frame to rotate. The tunnel excavation device comprises the support mechanism for tunnel excavation. When tunnel excavation, especially the excavation of a connecting passage in a hard rock stratum, is performed, the support mechanism is supported at a preset position, thereby providing mounting support for the coring machine, and subsequent coring machine excavation operation is performed; after a position is drilled, the driving assembly drives the mounting frame to rotate, thereby enabling the coring machine to rotate around the support frame; and the coring machine is moved to a next position for excavation operation in the process of rotation. The support mechanism for tunnel excavation is simple in operation and can cooperate with the coring machine to realize the excavation operation on the hard rock stratum.

Description

Technical Field

[0001] The present invention relates to the technical field of subway tunnel construction, and in particular to a support mechanism and a tunnel excavation device for tunnel excavation. Background Art

[0002] With the rapid development of urban rail transit, subways have gradually become an important mode of public transportation. Subway lines are typically laid in underground tunnels, with some sections located in the city center and others in the suburbs. A particularly crucial process in subway tunnel construction is the construction of connecting tunnels. A connecting tunnel between two shield tunnel sections serves as a connection, drainage, and fire prevention mechanism. If a problem occurs in one tunnel, personnel can be transferred to the other tunnel through the connecting tunnel, significantly increasing safety. Therefore, connecting tunnels are often called "escape tunnels."

[0003] There are two main traditional excavation methods for connecting tunnels: one is fire blasting and the other is manual excavation with a jackhammer. However, in special geological structures such as hard rock formations, these conventional blasting or jackhammer excavation methods cannot be used. Summary of the Invention

[0004] Based on this, it is necessary to provide a support mechanism and a tunnel excavation device for tunnel excavation; the support mechanism for tunnel excavation provides support for the core drilling machine during tunnel excavation, and can adjust the position of the core drilling machine to perform circumferential excavation; the tunnel excavation device includes the aforementioned support mechanism for tunnel excavation.

[0005] The technical solution is as follows:

[0006] On the one hand, a support mechanism for tunnel excavation is provided, including a support frame; a mounting frame, the mounting frame is used to install a coring machine, the mounting frame is rotatably arranged on the support frame, so that the coring machine can rotate around the support frame; and a drive assembly, the drive assembly is arranged on the support frame and is used to drive the mounting frame to rotate.

[0007] The above-mentioned support mechanism for tunnel excavation supports the support mechanism in a preset position when excavating a tunnel, especially excavating a connecting channel in a hard rock formation, thereby providing installation support for the coring machine and performing subsequent coring machine excavation operations; after drilling a position, the drive assembly drives the mounting frame to rotate, thereby causing the coring machine to rotate around the support frame, and the coring machine moves to the next position during the rotation process to perform excavation operations. This is not only simple to operate, but can also cooperate with the coring machine to realize excavation operations on hard rock formations.

[0008] The technical solution is further described below:

[0009] In one embodiment, the mounting frame includes a rotating frame and a first telescopic frame. The coring machine is arranged on the first telescopic frame. The rotating frame is rotatably arranged on the support frame. The first telescopic frame can be telescopically moved on the rotating frame.

[0010] In one embodiment, the first telescopic frame is provided with a mounting structure for mounting a coring machine.

[0011] In one embodiment, the support frame includes a base frame and a second telescopic frame, the mounting frame is rotatably mounted on the second telescopic frame, and the second telescopic frame can be telescopically moved on the base frame.

[0012] In one embodiment, the support frame is provided with a rotating base, and the rotating frame includes a rotating shaft, which is rotatably connected to the rotating base so that the rotating frame can rotate relative to the support frame.

[0013] In one embodiment, the driving assembly includes an electric hoist and a pull rope, the electric hoist is mounted on a support frame, and two ends of the pull rope are connected to the electric hoist and the mounting frame respectively;

[0014] Or the driving assembly includes a driving member, which is arranged on the supporting frame and is used to drive the rotating shaft to rotate.

[0015] In one embodiment, two mounting brackets are provided, and the two mounting brackets are rotatably connected to opposite sides of the support frame;

[0016] Two electric hoists are provided and are arranged corresponding to the mounting frames, and two pull ropes are provided and are arranged corresponding to the mounting frames.

[0017] In one embodiment, the bottom of the support frame is further provided with running wheels.

[0018] In one embodiment, the support mechanism for tunnel excavation further includes a control component, and the driving component is electrically connected to the control component.

[0019] On the other hand, a tunnel excavation device is also provided, including a coring machine; and a support mechanism for tunnel excavation as described in any of the above technical solutions, wherein the coring machine is arranged on a mounting frame.

[0020] The above-mentioned tunnel excavation device and coring machine can realize the excavation of special geological layers such as hard rock formations, and cooperate with the support mechanism to realize the construction of different excavation points in the circumferential direction of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view of the tunnel excavation device in the embodiment;

[0022] Figure 2 for Figure 1 Overall diagram of the tunnel excavation device in the embodiment;

[0023] Figure 3 for Figure 1 Adjustment diagram of the tunnel excavation device in the embodiment;

[0024] Figure 4 for Figure 1 A side view of a tunnel excavation device in an embodiment;

[0025] Figure 5 for Figure 1 Diagram of the telescopic structure of the mounting frame in the embodiment.

[0026] Description of the accompanying drawings:

[0027] 100. Support frame; 110. Travel wheel; 200. Mounting frame; 210. Rotating frame; 220. First telescopic frame; 310. Electric hoist; 320. Pull rope; 400. Coring machine; 500. Tunnel. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0029] It should be noted that when an element is referred to as being "fixed" to another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please refer to Figures 1 to 5 A support mechanism for tunnel excavation includes a support frame 100; a mounting frame 200, the mounting frame 200 is used to install a coring machine 400, the mounting frame 200 is rotatably arranged on the support frame 100, so that the coring machine 400 can rotate around the support frame 100; and a driving assembly, the driving assembly is arranged on the support frame 100 and is used to drive the mounting frame 200 to rotate.

[0032] The support mechanism for tunnel excavation supports the support mechanism at a preset position when excavating the tunnel 500, especially the connecting channel of the hard rock formation, so as to provide installation support for the coring machine 400 and perform subsequent excavation operations of the coring machine 400; after drilling a position, the driving assembly drives the mounting frame 200 to rotate, thereby causing the coring machine 400 to rotate around the support frame 100, and the coring machine 400 moves to the next position for excavation operations during the rotation process. It is not only simple to operate, but also can cooperate with the coring machine 400 to realize excavation operations on hard rock formations.

[0033] During tunnel excavation or the excavation of connecting passages after tunnel excavation, if the stratum is hard rock, if traditional excavation methods are used, on the one hand, the excavation efficiency is low, time-consuming and labor-intensive, and on the other hand, it is easy to affect the progress of the construction period.

[0034] By adopting the support mechanism provided in this embodiment, during excavation, the core drill 400 is installed and supported on the mounting frame 200 in conjunction with the core drill 400. Due to the support installation of the mounting frame 200, the construction personnel can directly operate the core drill 400. The core drill 400 can perform relatively effective excavation and drilling construction on hard rock formations, etc. After the excavation of one hole position is completed, the mounting frame 200 is driven to rotate by the driving component, so that the core drill 400 rotates in the circumferential direction of the cross section of the tunnel 500 to reach the next hole position to be excavated, so as to carry out the excavation operation of the next hole position, and so on. The operation is carried out in sequence to complete the preset circumferential excavation (such as the subway tunnel 500 is usually semi-circular) to facilitate subsequent further construction.

[0035] Since this excavation method is more effective for excavating hard rock formations, compared with traditional excavation methods that cannot handle such hard rock formations well, the use of the coring machine 400 and the support mechanism is equivalent to greatly improving the excavation efficiency, thereby effectively predicting the construction period and making reliable construction plans, etc., which will not be elaborated.

[0036] like Figure 1 As shown, the shape of the preset excavation tunnel 500 is a circle, and the position of the mounting frame 200 can be adjusted by rotation, so that the coring machine 400 on the mounting frame 200 can complete the excavation construction of each hole position in the circumferential direction one by one.

[0037] Furthermore, a coring machine 400 is provided at the end of the mounting frame 200. Those skilled in the art can select a coring machine 400 of appropriate specifications as needed to facilitate excavation construction, which will not be described in detail.

[0038] It should be noted that the support frame 100 provides overall support, which can be a structure capable of being supported on the ground and having the mounting frame 200 rotatably mounted thereon, and the mounting frame 200 provides support for the core taking machine 400 and adjusts the position of the core taking machine 400 during rotation. The driving assembly can be a structure capable of rotating the mounting frame 200, which can be a prior art means and will not be described in detail.

[0039] Please refer to Figures 1 to 5 , the mounting frame 200 includes a rotating frame 210 and a first telescopic frame 220, the core taking machine 400 is arranged on the first telescopic frame 220, and the rotating frame 210 is rotatably arranged on the support frame 100. The first telescopic frame 220 can move telescopically on the rotating frame 210.

[0040] The rotating frame 210 and the first telescopic frame 220 are arranged so that the mounting frame 200 is telescopically arranged. Specifically, the rotating frame 210 is rotatably connected to the support frame 100 and rotates under the drive of the driving assembly, so that the entire mounting frame 200 rotates; the first telescopic frame 220 can telescopically move on the rotating frame 210, and the core taking machine 400 is arranged on the first telescopic frame 220, so as to change the position of the core taking machine 400, that is, to change the activity range of the core taking machine 400. If the radius of the tunnel 500 is large, the first telescopic frame 220 is adjusted to be elongated, so that the core taking machine 400 can perform excavation and drilling within a larger circumferential range. If the radius range of the tunnel 500 is small, the first telescopic frame 220 is retracted, so that the core taking machine 400 can perform excavation and drilling within a smaller circumferential range, which will not be described in detail.

[0041] As shown in Figure 5 , the first telescopic frame 220 and the rotating frame 210 can be telescopic cylinder structures or hydraulic cylinder structures, or other structures capable of achieving telescopic function; of course, it also needs to be considered that after being extended or retracted by a certain distance, the extended or retracted position is not changed. Those skilled in the art can use existing technical means to achieve this, such as directly controlling the distance parameter of extension or retraction, which will not be described in detail.

[0042] In one embodiment, the first telescopic frame 220 is provided with a mounting structure for mounting the core taking machine 400.

[0043] The mounting frame 200 is used to mount the core taking machine 400, so in order to quickly disassemble and assemble, make the core taking machine 400 convenient to install and work stably after installation, a mounting structure can be arranged on the first telescopic frame 220, which can be matched with the structure of the core taking machine 400. Those skilled in the art can arrange according to specific installation needs, which will not be described in detail here.

[0044] In one embodiment, the support frame 100 includes a base frame and a second telescopic frame. The mounting frame 200 is rotatably mounted on the second telescopic frame. The second telescopic frame can be telescopically moved on the base frame.

[0045] If the radius of the tunnel 500 varies, the height of the support frame 100 can be adjusted to adjust the area and position accessible by the coring machine 400. Therefore, a base frame and a second telescopic frame are provided. The base frame provides overall support, while the second telescopic frame can be telescoped to change the position of the mounting frame 200, thereby adjusting the position accessible by the coring machine 400. This will not be described in detail.

[0046] The second telescopic frame can be telescopically moved up and down on the base frame, which can be achieved by using existing technical means, which will not be described here.

[0047] In one embodiment, the support frame 100 is provided with a rotating base, and the rotating frame 210 includes a rotating shaft, which is rotatably connected to the rotating base so that the rotating frame 210 can rotate relative to the support frame 100 .

[0048] The rotating seat can be a sleeve structure, and the rotating frame 210 is provided with a rotating shaft, which is sleeved in the sleeve, thereby achieving the technical effect of relative rotation, which will not be repeated.

[0049] Please refer to Figures 1 to 4 The driving assembly includes an electric hoist 310 and a pull rope 320. The electric hoist 310 is arranged on the support frame 100, and the two ends of the pull rope 320 are respectively connected to the electric hoist 310 and the mounting frame 200.

[0050] like Figure 1 As shown, when the electric hoist 310 is started, if the pull rope 320 is released, the mounting frame 200 at the other end of the pull rope 320 moves downward due to gravity, causing the mounting frame 200 to automatically rotate. If the electric hoist 310 retracts the pull rope 320, the mounting frame 200 at the other end of the pull rope 320 rotates in the opposite direction due to the pulling force of the pull rope 320, which will not be repeated.

[0051] Of course, as needed, the drive assembly may also include an angle detector to detect the rotation angle of the mounting bracket 200 and achieve precise control of the rotational motion together with the electric hoist 310. This control method can be implemented based on existing technical means and will not be repeated here.

[0052] In addition, the driving assembly may also be: the driving assembly includes a driving member, the driving member is provided on the support frame 100, and is used to drive the rotating shaft to rotate.

[0053] The driving member may be a driving motor, etc., to drive the mounting bracket 200 to rotate, which will not be described in detail.

[0054] Please refer to Figures 1 to 3There are two mounting brackets 200 , and the two mounting brackets 200 are rotatably connected to opposite sides of the support bracket 100 .

[0055] There is one mounting frame 200 on each side of the support frame 100, so that two coring machines 400 can be installed at the same time, and the two coring machines 400 can work at the same time without interfering with each other; in addition, if Figure 3 As shown, the positions of the two mounting frames 200 can be adjusted so that the coring machines 400 on both sides can perform coring operations at different positions in the circumferential direction, which will not be described in detail.

[0056] Correspondingly, two electric hoists 310 are provided and are disposed corresponding to the mounting frames 200 , and two pull ropes 320 are provided and are disposed corresponding to the mounting frames 200 .

[0057] Of course, one electric hoist 310 can also be provided. In this case, matching components need to be provided to convert one output of the electric hoist 310 into two outputs to match the two pull ropes 320 , which will not be described in detail.

[0058] Please refer to Figures 1 to 4 The bottom of the support frame 100 is further provided with walking wheels 110.

[0059] The walking wheel 110 can be arranged according to the specific structure of the support frame 100 to facilitate walking and carrying. It should be noted that during the specific installation, the bottom of the support frame 100 needs to be equipped with a wheel frame, and the walking wheel 110 is rotatably connected to the wheel frame, which will not be described in detail.

[0060] In one embodiment, the support mechanism for tunnel excavation further includes a control component, and the drive component is electrically connected to the control component.

[0061] The control component may include a controller or a control panel, and the driving components such as the driving motor or the electric hoist 310 are electrically connected to the controller to perform overall work control, which will not be described in detail.

[0062] Please refer to Figures 1 to 4 , a tunnel excavation device, comprising a coring machine 400; and a support mechanism for tunnel excavation as described in any of the above embodiments, wherein the coring machine 400 is arranged on a mounting frame 200.

[0063] The tunnel excavation device, the coring machine 400 can realize the excavation of special geological layers such as hard rock formations, and cooperate with the support mechanism to realize the construction of different excavation points in the circumferential direction of the tunnel 500.

[0064] The coring machine 400 can select an existing one according to actual needs, and design support mechanisms for tunnel excavation of different sizes and sizes for different coring machines 400 so that the two can work better together, which will not be described in detail.

[0065] Further, the coring machine 400 is provided with two, the mounting frame 200 is provided with two, the mounting frame 200 provides solid vertical load support force for the coring machine 400, through loading support force for the coring machine 400, effectively and quickly excavate the slightly weathered stratum with large rock strength. The setting of two coring machines 400 can realize 360° circumferential excavation of the section of the tunnel 500 by rotating the mounting frame 200, the length of the mounting frame 200 and the support frame 100 can be adjusted, so as to meet the excavation of the tunnel 500 with different section diameters, and no longer be described.

[0066] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0067] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A support mechanism for tunnel excavation, characterized in that: include: Support frame; A mounting frame, the mounting frame is used to mount the coring machine, the mounting frame is rotatably mounted on the support frame, and enables the coring machine to rotate around the support frame; and A driving assembly, the driving assembly being provided on the supporting frame and being used to drive the mounting frame to rotate; The mounting frame includes a rotating frame and a first telescopic frame; The driving assembly includes an electric hoist and a pull rope, the electric hoist is arranged on the support frame, and the two ends of the pull rope are respectively connected to the electric hoist and the mounting frame; The coring machine is detachably mounted on the first telescopic frame, the first telescopic frame is capable of telescopic movement on the rotating frame, and the pull rope can pull the rotating frame and the first telescopic frame to rotate synchronously relative to the support frame; There are two mounting brackets, which are rotatably connected to opposite sides of the support frame respectively; there are two electric hoists, which are arranged corresponding to the mounting brackets; there are two pull ropes, which are arranged corresponding to the mounting brackets.

2. The support mechanism for tunnel excavation according to claim 1, characterized in that: The first telescopic frame is provided with a mounting structure, and the mounting structure is used for mounting the coring machine.

3. The support mechanism for tunnel excavation according to claim 1, characterized in that: The support frame includes a base frame and a second telescopic frame. The mounting frame is rotatably mounted on the second telescopic frame. The second telescopic frame can be telescopically moved on the base frame.

4. The support mechanism for tunnel excavation according to claim 3, characterized in that: The support frame is provided with a rotating seat, and the rotating frame includes a rotating shaft, which is rotatably connected to the rotating seat so that the rotating frame can rotate relative to the support frame.

5. The support mechanism for tunnel excavation according to any one of claims 1 to 4, characterized in that: The bottom of the support frame is also provided with walking wheels.

6. The support mechanism for tunnel excavation according to claim 5, characterized in that: The support mechanism for tunnel excavation further includes a control component, and the drive component is electrically connected to the control component.

7. A tunnel excavation device, characterized in that: include: Coring machine; and According to the support mechanism for tunnel excavation according to any one of claims 1 to 6, the coring machine is arranged on the mounting frame.

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