Special low-abrasion shield cutter head for granite

Abstract

The utility model discloses a special low-abrasion shield cutterhead for granite, which belongs to the technical field of shield cutterheads and comprises a cutterhead body, a cutterhead mounting and fixing mechanism is arranged on one side of the cutterhead body, and a hob mechanism is arranged on the other side of the cutterhead body. The hobbing cutter mechanism comprises a second hobbing cutter structure, a first hobbing cutter structure and a third hobbing cutter structure, and the hobbing cutter mechanism is arranged, so that the rotary excavating efficiency of the shield cutterhead on granite can be improved, the shield cutterhead can be ensured to efficiently carry out rotary excavating on the granite, and the overall use effect of the shield tunneling machine is improved; the shield cutter head and the shield tunneling machine can be conveniently installed and fixed through the cutter head installing and fixing mechanism, the firmness after fixing can be guaranteed, it is guaranteed that the stability of the shield cutter head and the shield tunneling machine can be guaranteed when the shield cutter head and the shield tunneling machine are subjected to rotary excavating, and the rotary excavating efficiency of the shield cutter head and the shield tunneling machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield cutter heads, and particularly relates to a shield cutter head for granite with low wear. Background Technique

[0002] A shield machine is often used in the construction of urban subways. The main components of a shield machine include a shield shell, a cutter head and cutters, a cutter head drive, a propulsion system, a segment erector, a soil discharge mechanism, a rear support device, an electrical system, and auxiliary equipment, etc.

[0003] The overall excavation efficiency of the existing shield cutter head is relatively low. The positions of the hob cutters are generally set uniformly, and generally symmetrically. During the excavation work of some complex granite, the excavation efficiency cannot be effectively guaranteed; the reliability of the installation of the shield cutter head provided on the shield machine is relatively poor, and the shield cutter head is prone to shaking problems during use. Content of the Utility Model

[0004] To solve the problems raised in the above background technique. The utility model provides a shield cutter head for granite with low wear, which has the characteristics of higher excavation efficiency of the shield cutter head and being convenient for installing and fixing the shield cutter head on the shield machine.

[0005] To achieve the above object, the utility model provides the following technical solution: A shield cutter head for granite with low wear, including a cutter head body. A cutter head installation and fixing mechanism is provided on one side of the cutter head body, and a hob mechanism is provided on the other side of the cutter head body; the hob mechanism includes a second hob structure, a first hob structure, and a third hob structure. Six groups of third hob structures are provided at the edge of one side of the cutter head body, a second hob structure is provided inside the center position of one side of the cutter head body, and a first hob structure is provided at a position close to the second hob structure on one side of the cutter head body.

[0006] Preferably, the first hob structure includes a center blade, outer blades, a center shaft, and mounting holes. A center shaft is provided inside the side of the cutter head body. Mounting holes are provided on both sides of the center shaft. A center blade is provided on the surface of the center position of the center shaft, and outer blades are provided on the surfaces of both sides of the center shaft.

[0007] Preferably, the first hob structures are arranged in a circular array inside one side of the cutter head body, and every three groups of first hob structures are distributed in a 90-degree angular dislocation inside the side of the cutter head body.

[0008] Preferably, the size of the center blade is two-thirds of that of the outer blades, and the center blade is located at a position between two groups of outer blades.

[0009] Preferably, the cutter head mounting and fixing mechanism includes connecting columns, a mounting plate, support steel, a mounting ring, a flange plate and bolts. A plurality of groups of connecting columns are arranged at one side edge of the cutter head body. An mounting plate is arranged on the other side of the connecting columns. Support steel is arranged on the side of the mounting plate. The other end of the support steel is provided with a mounting ring. A flange plate is arranged on the side of the mounting ring. Bolts are arranged on the side of the flange plate.

[0010] Preferably, the support steel is arranged in an annular array at the connection between the mounting plate and the mounting ring, and the support steel is distributed obliquely.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By setting the hob mechanism, the present utility model can improve the rotary drilling efficiency of the shield cutter head for granite, ensure that the shield cutter head can efficiently rotary drill granite, thereby improving the overall use effect of the shield machine and saving a large amount of manpower and material resources.

[0013] 2. By setting the cutter head mounting and fixing mechanism, the present utility model can facilitate the installation and fixation of the shield cutter head to the shield machine, and the reliability after fixation can be ensured, so as to ensure the stability of the shield cutter blade during rotary drilling and increase its rotary drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of the present utility model;

[0015] Figure 2 is a plan view of the hob mechanism of the present utility model;

[0016] Figure 3 is a perspective view of the first hob structure of the present utility model;

[0017] Figure 4 is a perspective view of the cutter head mounting and fixing mechanism of the present utility model;

[0018] In the figure: 1. Cutter head body; 2. Cutter head mounting and fixing mechanism; 21. Connecting column; 22. Mounting plate; 23. Support steel; 24. Mounting ring; 25. Flange plate; 26. Bolt; 3. Hob mechanism; 31. Second hob structure; 32. First hob structure; 321. Central blade; 322. Outer blade; 323. Central shaft; 324. Mounting hole; 33. Third hob structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0020] Embodiment 1

[0021] Please refer to Figures 1-4 , the present utility model provides the following technical solutions: A special low-wear shield cutter head for granite, including a cutter head body 1, a cutter head installation and fixing mechanism 2 is arranged on one side of the cutter head body 1, and a hob mechanism 3 is arranged on the other side of the cutter head body 1; the hob mechanism 3 includes a second hob structure 31, a first hob structure 32 and a third hob structure 33. Six groups of third hob structures 33 are arranged at the edge of one side of the cutter head body 1, a second hob structure 31 is arranged inside the center position of one side of the cutter head body 1, and a first hob structure 32 is arranged at a position close to the second hob structure 31 on one side of the cutter head body 1.

[0022] Specifically, the first hob structure 32 includes a center blade 321, outer blades 322, a center shaft 323 and mounting holes 324. A center shaft 323 is arranged inside the side of the cutter head body 1. Mounting holes 324 are opened on both sides of the center shaft 323. A center blade 321 is arranged on the surface of the center position of the center shaft 323, and outer blades 322 are arranged on the surfaces of both sides of the center shaft 323.

[0023] By adopting the above technical solution, compared with the ordinary hob structure, the blades of this structure are divided into a center blade 321 and outer blades 322, and the center blade 321 at the center position is a little smaller. This can effectively disperse the rotary drilling efficiency during the rotary drilling process, thereby improving its rotary drilling efficiency.

[0024] Specifically, the first hob structure 32 is arranged in a circular array inside one side of the cutter head body 1, and every three groups of the first hob structures 32 are distributed in a ninety-degree angular dislocation inside the side of the cutter head body 1.

[0025] By adopting the above technical solution, by arranging the first hob structure 32 in a dislocation shape inside the cutter head body 1, the shield cutter head can rotate irregularly during rotary drilling, thereby further improving its rotary drilling efficiency.

[0026] Specifically, the size of the center blade 321 is two-thirds of that of the outer blade 322, and the center blade 321 is located between two groups of outer blades 322.

[0027] By adopting the above technical solution, the setting of this structure can effectively disperse the rotary excavation efficiency of the shield cutterhead, thereby improving its rotary excavation efficiency.

[0028] When this embodiment is in use, compared with the ordinary hob structure, the blades of this structure are divided into a central blade 321 and an outer blade 322, and the central blade 321 at the central position is a little smaller. This can effectively disperse the rotary excavation efficiency during the rotary excavation process of this structure, thereby improving its rotary excavation efficiency. By arranging the first hob structure 32 in a staggered manner inside the cutterhead body 1, the shield cutterhead can rotate irregularly during rotary excavation, thereby further improving its rotary excavation efficiency.

[0029] Embodiment 2

[0030] The difference between this embodiment and Embodiment 1 is that the cutterhead installation and fixing mechanism 2 includes a connecting column 21, a mounting plate 22, a support steel 23, a mounting ring 24, a flange 25 and a bolt 26. Multiple groups of connecting columns 21 are arranged at one side edge of the cutterhead body 1. The other side of the connecting column 21 is provided with a mounting plate 22. A support steel 23 is arranged on the side of the mounting plate 22. The other end of the support steel 23 is provided with a mounting ring 24. A flange 25 is arranged on the side of the mounting ring 24. A bolt 26 is arranged on the side of the flange 25.

[0031] By adopting the above technical solution, the device is installed on the rotating structure of the shield machine through the bolt 26. The setting of the support steel 23 can ensure the overall stability of its structure. Through the setting of the connecting column 21 and the mounting plate 22, it can be ensured that the use of the hob structure is not affected after the device is installed.

[0032] Specifically, the support steel 23 is arranged in a circular array at the connection between the mounting plate 22 and the mounting ring 24, and the support steel 23 is distributed in an inclined shape.

[0033] By adopting the above technical solution, the setting of this structure can further improve the stability of the shield blade after installation.

[0034] When this embodiment is in use, the device is installed on the rotating structure of the shield machine through the bolt 26. The setting of the support steel 23 can ensure the overall stability of its structure. Through the setting of the connecting column 21 and the mounting plate 22, it can be ensured that the use of the hob structure is not affected after the device is installed.

[0035] Working principle and usage process of the present utility model: When the present utility model is in use, compared with the ordinary hob structure, the blades of this structure are divided into a central blade 321 and an outer blade 322, and the central blade 321 at the central position is a bit smaller. This can effectively disperse the rotary drilling efficiency during the rotary drilling process, thereby improving its rotary drilling efficiency. By arranging the first hob structure 32 in a staggered manner inside the cutter head body 1, the shield cutter head can achieve irregular rotation during rotary drilling, further improving its rotary drilling efficiency; The device is installed on the rotating structure of the shield machine through bolts 26. The overall stability of its structure can be ensured through the setting of the support steel 23. Through the setting of the connecting column 21 and the mounting plate 22, it can be ensured that the use of the hob structure is not affected after the device is installed.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A special low-wear shield cutter head for granite, comprising a cutter head body, characterized in that: A cutter head mounting and fixing mechanism is provided on one side of the cutter head body, and a hob mechanism is provided on the other side of the cutter head body; the hob mechanism includes a second hob structure, a first hob structure, and a third hob structure. Six groups of third hob structures are provided at the edge of one side of the cutter head body, a second hob structure is provided inside the center position of one side of the cutter head body, and a first hob structure is provided at a position close to the second hob structure on one side of the cutter head body.

2. The special low-wear shield cutter head for granite according to claim 1, wherein: The first hob structure includes a center blade, outer blades, a center shaft, and mounting holes. The center shaft is provided inside the side of the cutter head body. Mounting holes are provided on both sides of the center shaft. The center blade is provided on the surface at the center position of the center shaft, and the outer blades are provided on the surfaces on both sides of the center shaft.

3. The special low-wear shield cutter head for granite according to claim 2, wherein: The first hob structures are arranged in a circular array inside one side of the cutter head body, and every three groups of first hob structures are distributed at a 90-degree angular dislocation inside the side of the cutter head body.

4. A special low-wear shield cutterhead for granite according to claim 2, characterized in that: The size of the center blade is two-thirds of that of the outer blades, and the center blade is located between two groups of outer blades.

5. A special low-wear shield cutterhead for granite according to claim 1, characterized in that: The cutter head mounting and fixing mechanism includes connecting columns, mounting plates, support steels, mounting rings, flange plates, and bolts. Multiple groups of connecting columns are provided at the edge of one side of the cutter head body. The mounting plates are provided on the other sides of the connecting columns. The support steels are provided on the sides of the mounting plates. The other ends of the support steels are provided with mounting rings. The flange plates are provided on the sides of the mounting rings. The bolts are provided on the sides of the flange plates.

6. A special low-wear shield cutter head for granite according to claim 5, characterized in that: The support steels are arranged in a circular array at the connection between the mounting plate and the mounting ring, and the support steels are distributed obliquely.

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