Shield tunneling device with drill bit convenient to replace

Abstract

The shield tunneling device comprises a shell, the drill bit, a first hydraulic cylinder, a second hydraulic cylinder and a material guiding mechanism, the shell is of a cylindrical structure with the two ends open, a first fixing ring is arranged in the shell, and the first fixing ring is connected with the drill bit through the second hydraulic cylinder; one end of the drill bit is connected with driving equipment through a connecting piece, and the other end of the drill bit is provided with a crushing disc, a second crushing strip and a steering wheel. An annular fixing strip is arranged at the other end of the shell, and a plurality of first hydraulic cylinders are arranged on the upper portion of the annular fixing strip. And the material guiding mechanism comprises a fixing frame, a material guiding frame, a material guiding pipe and a driving motor which are arranged in the shell, a connecting groove is formed in the middle of the fixing frame, and the material guiding frame is arranged in the connecting groove. According to the utility model, integration of tunnel excavation and propulsion can be realized, and the drill teeth can be quickly replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel excavation equipment, and in particular relates to a shield device which is convenient for replacing a drill bit. Background Art

[0002] Shield tunnel boring machine, referred to as shield machine. It is a special engineering machinery for tunnel excavation. Modern shield tunnel boring machine integrates optical, mechanical, electrical, hydraulic, sensor and information technology. It has the functions of excavating and cutting soil, conveying soil ballast, assembling tunnel lining, measuring and guiding deviation correction, etc. It involves multiple disciplines and technologies such as geology, civil engineering, machinery, mechanics, hydraulics, electricity, control, and measurement. It must be designed and manufactured according to different geology, and the reliability requirements are extremely high. Shield tunnel boring machine has been widely used in subway, railway, highway, municipal, hydropower and other tunnel projects.

[0003] During the excavation process, the shield machine generally adopts an overall propulsion method, breaking the ground and digging with the drill bit, and advancing the equipment and the drill bit in batches by means of hydraulic cylinder propulsion, thereby realizing the integration of excavation and support block installation. However, after the drill bit of the existing shield machine is used for a long time, the drill teeth will wear out and need to be replaced. Generally, the drill teeth adopt a welded structure, which is extremely difficult to replace. Therefore, a shield machine that is easy to replace the drill teeth is one of the research directions of technical personnel in this field. Utility Model Content

[0004] The utility model aims to provide a shield device which is convenient for replacing a drill bit, can realize the integration of tunnel and excavation propulsion, and can quickly replace drill teeth.

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

[0006] A shield device for facilitating the replacement of a drill bit comprises a shell, a drill bit, a first hydraulic cylinder, a second hydraulic cylinder and a material guide mechanism, wherein the shell is a cylindrical structure with openings at both ends, and a first fixing ring is arranged inside the shell, and the first fixing ring is connected to the drill bit through a second hydraulic cylinder; one end of the drill bit is connected to a driving device through a connecting piece, and a crushing disk, a second crushing bar and a steering wheel are arranged on the other end of the drill bit respectively; an annular fixing bar is arranged at the other end of the shell, and a plurality of first hydraulic cylinders are arranged on the upper part of the annular fixing bar; the material guide mechanism comprises a fixing frame, a material guide frame, a material guide pipe and a driving motor arranged inside the shell, a connecting groove is arranged in the middle of the fixing frame, and a material guide frame is arranged inside the connecting groove, and a material guide pipe and a driving motor connected to the material guide pipe are arranged inside the material guide frame.

[0007] Furthermore, the crushing disk is fixedly arranged on the upper part of the drill bit, and a plurality of first crushing bars are arranged on the upper part of the crushing disk; a plurality of rectangular grooves are arranged on the upper part of the drill bit, and steering wheels are arranged inside the rectangular grooves.

[0008] Furthermore, a plurality of mounting grooves are arranged on the upper part of the drill bit, and a second crushing strip is arranged inside the mounting groove; a limiting block is arranged at one end of the second crushing strip, and the second crushing strip is buckled and connected with the mounting groove through the limiting block at the bottom.

[0009] Furthermore, the material guide rack is tiltedly arranged inside the shell, and the feed port of the material guide rack is arranged corresponding to the drill bit feed port; a spiral material guide rod is arranged inside the material guide tube, and one end of the spiral material guide rod is connected to the drive motor through a connecting piece.

[0010] Furthermore, one end of the material guide frame extends to the interior of the tunnel body, and a supporting structure is arranged on the interior of the tunnel body.

[0011] Furthermore, a plurality of crushing teeth are arranged on the upper parts of the first crushing bar and the second crushing bar, and reinforcing ribs are arranged at the connection between the crushing teeth and the crushing bar.

[0012] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0013] 1. A first fixing ring is arranged inside the shell, and the first fixing ring is connected to the drill bit through a second hydraulic cylinder, so as to push the drill bit to facilitate crushing, and the soil drilled out by the drill bit is transported through a material guide rack to the outside.

[0014] 2. A first hydraulic cylinder is arranged on the other end of the shell, which can cooperate with the mechanical gripper to grab the supporting structure and place the grabbed supporting structure on the inner wall of the tunnel. The first hydraulic cylinder mechanically tightens it. In this process, the entire device can be moved forward to achieve advancement.

[0015] A crushing disc, a second crushing bar and a steering wheel are arranged on the upper part of the drill bit, wherein a plurality of crushing bars are arranged on the upper part of the crushing disc to enhance the crushing efficiency of the soil, and the second crushing bar can be replaced as needed to improve convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the shell part of the utility model.

[0018] Figure 3 It is a partial structural schematic diagram of the first fixing ring of the utility model.

[0019] Figure 4 This is a partial structural schematic diagram of the drill bit of the utility model.

[0020] Figure 5 It is a partial structural schematic diagram of the second crushing bar of the utility model.

[0021] Figure 6 It is a schematic diagram of the structure of the tunnel body of the utility model.

[0022] In the figure: 1-tunnel body, 2-shell, 3-annular fixing bar, 4-first hydraulic cylinder, 5-support structure, 7-drill bit, 9-crushing disc, 10-first crushing bar, 11-rectangular groove, 12-steering wheel, 13-second crushing bar, 14-placement groove, 15-limiting block, 16-guide frame, 17-drive motor, 18-guide pipe, 19-first fixing ring, 20-second hydraulic cylinder. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the description of the present utility model, it is necessary to understand that the directions or positional relationships indicated by "front, back, up, down, left, right", "inside, outside", "bottom, top", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present utility model.

[0025] Embodiment 1:

[0026] Reference Figure 1-Figure 6A shield device for convenient drill bit replacement is shown, comprising a housing 2, a drill bit 7, a first hydraulic cylinder 4, a second hydraulic cylinder 20 and a material guide mechanism. The housing 2 is a cylindrical structure with two ends open, and a first fixing ring 19 is arranged inside the housing 2, and the first fixing ring 19 is connected to the drill bit 7 through the second hydraulic cylinder 20; one end of the drill bit 7 is connected to the driving device through a connecting piece, and a crushing disk 9, a second crushing bar 13 and a steering wheel 12 are respectively arranged on the other end of the drill bit 7; an annular fixing bar 3 is arranged at the other end of the housing 2, and a plurality of first hydraulic cylinders 4 are arranged on the upper part of the annular fixing bar 3; the material guide mechanism comprises a fixing frame arranged inside the housing 2, a material guide frame 16, a material guide pipe 1 8 and a driving motor 17, a connecting groove is provided in the middle of the fixing frame, and a material guide frame 16 is arranged inside the connecting groove, a material guide pipe 18 and a driving motor 17 connected to the material guide pipe 18 are arranged inside the material guide frame 16; in the above scheme, in the whole structure, two groups of hydraulic cylinders are arranged inside the shell 2, among which the first hydraulic cylinder 4 is used to propel the whole equipment, and one end of the first hydraulic cylinder is lowered on the supporting structure, and the whole equipment is pushed forward in a slowly advancing manner, and at this time, the operator can fix and glue the connection of the supporting structure to increase its waterproof performance; and the second hydraulic cylinder 20 is used to propel the drill bit, so that the drill bit can contact the position to be crushed for a long time, and crush and excavate in real time.

[0027] Embodiment 2:

[0028] The present embodiment further describes the crushing disk 9 on the basis of the existing embodiment 1. The crushing disk 9 is fixedly arranged on the upper part of the drill bit 7, and a plurality of first crushing bars 10 are arranged on the upper part of the crushing disk 9; a plurality of rectangular grooves 11 are arranged on the upper part of the drill bit 7, and a steering wheel 12 is arranged inside the rectangular groove 11; a plurality of placement grooves 14 are arranged on the upper part of the drill bit 7, and a second crushing bar 13 is arranged inside the placement groove 14; a limiting block 15 is arranged at one end of the second crushing bar 13, and the second crushing bar 13 is buckled and connected with the placement groove 14 through the limiting block 15 at the bottom; a steering wheel 12 is arranged on the upper part of the drill bit, which can rotate with the drill bit to play an auxiliary role, and the crushing disk is used to crush a harder soil layer, which can be rotated and crushed by the first crushing bar on its upper part, and the second crushing bar, one end of which is provided with crushing teeth, and the other end is provided with a limiting block, which can be buckled and connected with the placement groove 14, and is limited and strengthened by a limiting screw. When the second crushing bar is worn, it can be directly replaced, and the replacement is more convenient.

[0029] Embodiment 3:

[0030] This embodiment further describes the guide rack 16 on the basis of the existing embodiment 1. The guide rack 16 is tilted inside the shell 2, and the feed port of the guide rack 16 is arranged corresponding to the feed port of the drill bit 7; a spiral guide rod is arranged inside the guide pipe 18, and one end of the spiral guide rod is connected to the drive motor 17 through a connecting piece; one end of the guide rack 16 extends to the inside of the tunnel body 1, and a support structure 5 is arranged on the inside of the tunnel body 1; a plurality of crushing teeth are arranged on the upper part of the first crushing bar 10 and the second crushing bar 13, and reinforcing ribs are arranged at the connection between the crushing teeth and the crushing bars; two groups of pouring pipes are arranged inside the guide rack 16, which can transport the soil in real time through the internal spiral guide rod under the drive of the drive motor, transfer it to the conveyor belt inside the tunnel, and then transfer it to the outside.

[0031] The same expression appearing in multiple places above does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the feature, structure or characteristic implemented in conjunction with other embodiments also falls within the scope of the present invention.

[0032] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A shield device for facilitating replacement of a drill bit, comprising a housing (2), a drill bit (7), a first hydraulic cylinder (4), a second hydraulic cylinder (20) and a material guide mechanism, characterized in that: The housing (2) is a cylindrical structure with openings at both ends, and a first fixing ring (19) is provided inside the housing (2), and the first fixing ring (19) is connected to the drill bit (7) via a second hydraulic cylinder (20); One end of the drill bit (7) is connected to the driving device through a connecting piece, and the other end of the drill bit (7) is respectively provided with a crushing disc (9), a second crushing bar (13) and a steering wheel (12); The other end of the housing (2) is provided with an annular fixing strip (3), and a plurality of first hydraulic cylinders (4) are provided on the upper part of the annular fixing strip (3); The material guiding mechanism comprises a fixed frame, a material guiding frame (16), a material guiding pipe (18) and a driving motor (17) arranged inside the housing (2); a connecting groove is arranged in the middle of the fixed frame, and the material guiding frame (16) is arranged inside the connecting groove; a material guiding pipe (18) and a driving motor (17) connected to the material guiding pipe (18) are arranged inside the material guiding frame (16); The crushing disk (9) is fixedly arranged on the upper part of the drill bit (7), and a plurality of first crushing bars (10) are arranged on the upper part of the crushing disk (9); A plurality of rectangular grooves (11) are arranged on the upper part of the drill bit (7), and steering wheels (12) are arranged inside the rectangular grooves (11).

2. A shield device for facilitating drill bit replacement according to claim 1, characterized in that: A plurality of placement grooves (14) are arranged on the upper part of the drill bit (7), and a second crushing strip (13) is arranged inside the placement groove (14); a limiting block (15) is arranged at one end of the second crushing strip (13), and the second crushing strip (13) is buckled and connected to the placement groove (14) through the limiting block (15) at the bottom.

3. The shield device for facilitating drill bit replacement according to claim 1, characterized in that: The material guide rack (16) is arranged obliquely inside the housing (2), and the feed port of the material guide rack (16) is arranged corresponding to the feed port of the drill bit (7); a spiral material guide rod is arranged inside the material guide pipe (18), and one end of the spiral material guide rod is connected to the drive motor (17) through a connecting piece.

4. The shield device for facilitating drill bit replacement according to claim 1, characterized in that: One end of the material guide frame (16) extends to the interior of the tunnel body (1), and a support structure (5) is provided on the interior of the tunnel body (1).

5. The shield device for facilitating drill bit replacement according to claim 1, characterized in that: A plurality of crushing teeth are arranged on the upper parts of the first crushing bar (10) and the second crushing bar (13), and reinforcing ribs are arranged at the connection between the crushing teeth and the crushing bar.

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