Advanced drilling structure for main beam section of open TBM (Tunnel Boring Machine)

Abstract

The utility model relates to the technical field of heading machines, in particular to an open-type TBM heading machine main beam section advance drilling structure which comprises an open-type TBM heading machine main body, a drill bit used for drilling is installed on one side of the open-type TBM heading machine main body, auxiliary drilling rods which are evenly distributed are arranged on the outer wall and the top of the drill bit, and the auxiliary drilling rods are arranged on the top of the open-type TBM heading machine main body. The section of the drill bit is in a trapezoid shape, the auxiliary drilling rod is obliquely arranged, the outer wall and the top of the drill bit are fixedly connected with fixing blocks which are evenly distributed, the auxiliary drilling rod is fixedly connected with the fixing blocks in a penetrating mode, and a first arc-shaped face is arranged at the end, away from the fixing blocks, of the auxiliary drilling rod. When the drill bit is used, the drilling effect of the drill bit can be assisted and improved by arranging the multiple inclined auxiliary drilling rods on the outer wall of the drill bit, the end of the drill bit is arranged in an arc shape, and the end of the drill bit can be effectively prevented from being damaged in cooperation with the multiple auxiliary drilling rods at the end of the drill bit.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machines, in particular to an open TBM tunnel boring machine main beam section advance drilling structure. Background Art

[0002] The tunnel boring machine is also called TBM. It is a highly efficient hard rock tunneling equipment, which is now widely used in transportation, water diversion and other fields. In recent years, it has made certain development and progress in the coal mining field. Compared with the blasting method in the traditional coal mining field, the TBM tunnel boring machine has a faster excavation speed, higher support efficiency, and can adapt to different geological conditions, so it has received more attention.

[0003] At present, the drill bits in some TBM tunneling machines use some pointed cone-shaped drill bits with conical cross-sections for drilling operations. Although the pointed cone-shaped drill bits can achieve drilling operations, the ends of the pointed cone-shaped drill bits are easily damaged during drilling. Therefore, an open TBM tunneling machine main beam section advance drilling structure is now proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that at present, some drill bits in some TBM tunneling machines use some pointed cone-shaped drill bits with conical cross-sections to perform drilling operations. Although the pointed cone-shaped drill bits can achieve drilling operations, the end of the pointed cone-shaped drill bits is easily damaged during drilling. An open-type TBM tunneling machine main beam section advance drilling structure is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An open TBM main beam section advance drilling structure comprises an open TBM main body, a drill bit for drilling is installed on one side of the open TBM main body, and auxiliary drilling rods are evenly distributed on the outer wall and top of the drill bit.

[0007] Preferably, the cross section of the drill bit is trapezoidal.

[0008] Preferably, the auxiliary drilling rod is arranged obliquely, and the outer wall and the top of the drill bit are fixedly connected with evenly distributed fixing blocks.

[0009] Preferably, the auxiliary drilling rod is penetrated and fixedly connected with the fixing block, and a first arc surface is provided at one end of the auxiliary drilling rod away from the fixing block.

[0010] Preferably, a fixing tube is fixedly connected to one side of the drill bit, a fixing frame is fixedly connected to the outer wall of the fixing tube, fixing ears are symmetrically fixedly connected to the outer walls of both sides of the fixing frame, and fixing holes are provided on the fixing ears for installing and fixing the drill bit.

[0011] Preferably, a second arc-shaped surface is provided on the top of the drill bit.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the device is in use, a plurality of inclined auxiliary drilling rods are arranged on the outer wall of the drill bit, so as to assist and improve the drilling effect of the drill bit. The end of the drill bit is arranged in an arc shape, and combined with the plurality of auxiliary drilling rods at the end of the drill bit, the end of the drill bit can be effectively prevented from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the plane and three-dimensional structure of an open TBM main beam section advance drilling structure proposed by the utility model;

[0015] Figure 2 It is a schematic diagram of the top three-dimensional structure of a drill bit in an open-type TBM main beam section advance drilling structure proposed by the utility model;

[0016] Figure 3 It is a schematic diagram of the bottom three-dimensional structure of a drill bit in an open-type TBM main beam section advance drilling structure proposed by the utility model;

[0017] Figure 4 The utility model provides a schematic diagram of a vertical three-dimensional structure of a drill bit in an open TBM main beam section advance drilling structure.

[0018] In the figure: 1 open type TBM tunneling machine body, 2 drill bit, 3 auxiliary drilling rod, 4 fixing block, 5 fixing pipe, 6 fixing frame, 7 fixing ear, 8 fixing hole, 9 first arc surface, 10 second arc surface. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1-Figure 4An open TBM main beam section advance drilling structure includes an open TBM main body 1, a drill bit 2 for drilling is installed on one side of the open TBM main body 1, and auxiliary drilling rods 3 are evenly distributed on the outer wall and top of the drill bit 2.

[0021] It should be noted that the open TBM boring machine body 1 can control the rotation of the drill bit 2 to facilitate drilling operations. The specific model specifications need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not described, and both can be powered by external devices and controlled to be turned on and off;

[0022] Furthermore, the cross section of the drill bit 2 is arranged in a trapezoidal shape, and a second arc surface 10 is arranged on the top of the drill bit 2;

[0023] It should be noted that by designing the end of the drill bit 2 to be in an arc shape, the end of the drill bit 2 provided with the second arc surface 10 is less likely to be damaged than the drill bit 2 with a pointed cone end, thereby extending the service life of the drill bit 2.

[0024] Furthermore, the auxiliary drilling rod 3 is arranged at an angle, and the outer wall and the top of the drill bit 2 are fixedly connected with evenly distributed fixing blocks 4;

[0025] It should be noted that, through multiple fixing blocks 4, multiple auxiliary drilling rods 3 can be installed and fixed, so that the auxiliary drilling rods 3 can be conveniently used for auxiliary drilling operations;

[0026] It should be noted that when the drill bit 2 rotates, it will drive multiple auxiliary drilling rods 3 to rotate at a uniform speed. The multiple auxiliary drilling rods 3 rotating at a uniform speed can assist the drill bit 2 in drilling operations and improve the effect of the drilling operations.

[0027] Furthermore, the auxiliary drilling rod 3 is penetrated and fixedly connected with the fixing block 4, and a first arc surface 9 is provided at one end of the auxiliary drilling rod 3 away from the fixing block 4;

[0028] It should be noted that the first arc surface 9 at one end of the auxiliary drilling rod 3 can not only protect the end of the auxiliary drilling rod 3 , but also improve the drilling effect of the auxiliary drilling rod 3 .

[0029] Furthermore, a fixing tube 5 is fixedly connected to one side of the drill bit 2, a fixing frame 6 is fixedly connected to the outer wall of the fixing tube 5, and fixing ears 7 are symmetrically fixedly connected to the outer walls of both sides of the fixing frame 6, and fixing holes 8 for fixing and fixing the drill bit 2 are opened on the fixing ears 7;

[0030] It should be noted that, through the cooperation of the fixing frame 6 , the fixing ears 7 and the fixing holes 8 , it is convenient to install the drill bit 2 on the open TBM boring machine body 1 .

[0031] Working principle of this utility model:

[0032] By arranging a plurality of inclined auxiliary drilling rods 3 on the outer wall of the drill bit 2, the drilling effect of the drill bit 2 can be assisted and improved. The end of the drill bit 2 is arranged in an arc shape, and combined with the plurality of auxiliary drilling rods 3 at the end of the drill bit 2, the end of the drill bit 2 can be effectively prevented from being damaged.

[0033] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An open-type TBM main beam section advance drilling structure, comprising an open-type TBM main body (1), characterized in that: A drill bit (2) for drilling is installed on one side of the open TBM main body (1); the outer wall and top of the drill bit (2) are both provided with evenly distributed auxiliary drilling rods (3); the auxiliary drilling rods (3) are arranged in an inclined manner; the outer wall and top of the drill bit (2) are both fixedly connected with evenly distributed fixing blocks (4); the auxiliary drilling rods (3) and the fixing blocks (4) are penetrated and fixedly connected; the end of the auxiliary drilling rod (3) away from the fixing block (4) is provided with a first arc surface (9); and the top of the drill bit (2) is provided with a second arc surface (10).

2. The open TBM main beam section advance drilling structure according to claim 1 is characterized in that: The cross section of the drill bit (2) is arranged in a trapezoidal shape.

3. The open TBM main beam section advance drilling structure according to claim 1 is characterized in that: A fixing tube (5) is fixedly connected to one side of the drill bit (2); a fixing frame (6) is fixedly connected to the outer wall of the fixing tube (5); fixing ears (7) are symmetrically fixedly connected to the outer walls of both sides of the fixing frame (6); and fixing holes (8) are provided on the fixing ears (7) for fixing the drill bit (2) thereon.

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