CN216553923U - Cutter head and shield machine with same - Google Patents

Abstract

The utility model provides a cutter head and a shield tunneling machine with the same, wherein the cutter head comprises: the cutter head comprises a cutter head body, wherein a plurality of first mounting hole groups and second mounting holes are formed in the cutter head body, each first mounting hole group and each second mounting hole extend along the radial direction of the cutter head body, each first mounting hole group comprises a plurality of first mounting holes, and each second mounting hole is formed between every two adjacent first mounting hole groups; the first hob is fixedly arranged in the first mounting hole; and the cutter arm is detachably arranged in the second mounting hole. By applying the technical scheme of the utility model, the problem of low tunneling rate of the cutter head in soft soil or soft rock in the related technology can be effectively solved.

Description

Cutter head and shield machine with same

Technical Field

The utility model relates to the field of tunnel excavation, in particular to a cutter head and a shield tunneling machine with the same.

Background

The cutter head is an important component of the shield machine, the cutter head is generally arranged at the foremost end of the shield machine in the tunneling direction and is connected with a main driving shaft, a plurality of hobbing cutters are arranged on the cutter head, the main driving shaft drives the cutter head to rotate, and the hobbing cutters on the cutter head cut a soil layer, so that the tunneling effect is achieved.

A plurality of through holes are generally formed in the existing cutter head, and a hob is arranged in each through hole. The arrangement mode can ensure that the cutter head has sufficient integral rigidity in a hard rock structure, so that the impact resistance of the cutter head is higher. However, the structure can cause the opening rate of the cutter head to be low, when the shield machine tunnels in soft soil and soft rock, cut soil is difficult to enter the shield machine through the through hole, so that the soil and rock cut by the shield machine are accumulated in the soil layer, and the tunneling efficiency of the shield machine is influenced. However, if the opening rate of the cutter disc is increased, the strength of the cutter disc is affected.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a cutter head and a shield tunneling machine with the cutter head, and aims to solve the problem that the tunneling efficiency of the cutter head in the related technology is low in soft soil or soft rock.

In order to achieve the above object, according to one aspect of the present invention, there is provided a cutter head including: the cutter head comprises a cutter head body, wherein a plurality of first mounting hole groups and second mounting holes are formed in the cutter head body, each first mounting hole group and each second mounting hole extend along the radial direction of the cutter head body, each first mounting hole group comprises a plurality of first mounting holes, and each second mounting hole is formed between every two adjacent first mounting hole groups; the first hob is fixedly arranged in the first mounting hole; and the cutter arm is detachably arranged in the second mounting hole.

Furthermore, the number of the second mounting holes is multiple, and one second mounting hole is arranged between every two adjacent first mounting hole groups.

Further, the ratio of the area of the second mounting hole to the area of the cutter head body is between 0.1 and 0.3.

Furthermore, the first hob includes a plurality of, and a plurality of first hobs and a plurality of first mounting hole one-to-one setting.

Further, the second mounting hole is the slot hole, and the sword arm includes the sword arm body and wears to establish a plurality of second hobbing cutters on the sword arm body, and a plurality of second hobbing cutters set up along the length direction interval of sword arm, are provided with first connecting hole on the sword arm body, are provided with the second connecting hole on the blade disc body, and the fastener is worn to locate in first connecting hole and the second connecting hole.

Further, the ratio of the area of the second mounting hole to the area of the tool arm body is between 1.8 and 2.2.

Further, the tool arm body includes the main part and the installation department that is located the length direction's of main part both ends, and the second hobbing cutter setting is on the main part, and first connecting hole sets up on the installation department, and the blade disc body is including the first terminal surface that is located tunnelling direction front end and the second terminal surface that is located tunnelling direction rear, and the installation department is connected on the second terminal surface.

Furthermore, the thickness of the mounting part is smaller than that of the main body part, the main body part extends into the second mounting hole, and the end face, located at the front end in the tunneling direction, of the main body part is flush with the first end face.

Further, the tool arm still includes a plurality of scrapers that set up on the tool arm body, and a plurality of scrapers setting interval set up in the length direction of tool arm body.

According to another aspect of the present invention, there is provided a shield tunneling machine including: the shield machine body comprises a driving shaft; the cutter disc is arranged on the driving shaft and is the cutter disc.

By applying the technical scheme of the utility model, the cutter head body is provided with a first mounting hole group and a second mounting hole, wherein the first mounting hole group comprises a plurality of first mounting holes, and a first hob is fixedly arranged in each first mounting hole. The arrangement mode can ensure that the first hob is stably arranged in the first mounting hole, so that the first hob is not easy to fall off when the cutterhead rotates, and the strength of the cutterhead and the cutting effect on a soil layer are ensured. Meanwhile, a second mounting hole is formed in the cutter head body, and the cutter arm is detachably arranged in the second mounting hole. When the shield machine excavates comparatively hard soil layer, the hack that the blade disc was cut every turn a week is less, and inside the hack accessible first mounting hole and the second mounting hole entered into the shield machine, transported away through the inside transport structure of shield machine. When the shield constructs the less soil layer of machine excavation hardness, can follow the downthehole dismantlement of second mounting, increase the aperture opening ratio of blade disc body with the arm of a knife for the hack that is cut off can in time be followed in the second mounting and derived, has avoided the hack that is cut off to pile up in blade disc the place ahead, can not in time derive, influences the tunnelling efficiency of shield structure machine.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

figure 1 shows a schematic structural view of an embodiment of the cutterhead according to the present invention; and

fig. 2 shows a schematic structural view of the cutter head arm of fig. 1.

Wherein the figures include the following reference numerals:

10. a cutter head body; 11. a first set of mounting holes; 111. a first mounting hole; 12. a second mounting hole; 20. a first hob; 30. a cutter arm; 31. a tool arm body; 311. a main body portion; 312. an installation part; 32. a second hob; 33. a scraper; 40. a cutter head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, the cutter head of the present embodiment includes: a cutter head body 10, a first hob 20 and a cutter arm 30. The cutter head body 10 is provided with a plurality of first mounting hole groups 11 and second mounting holes 12, each first mounting hole group 11 and each second mounting hole 12 extend along the radial direction of the cutter head body 10, each first mounting hole group 11 comprises a plurality of first mounting holes 111, and each second mounting hole 12 is arranged between two adjacent first mounting hole groups 11; the first hob 20 is fixedly arranged in the first mounting hole 111; and a cutter arm 30 detachably disposed in the second mounting hole 12.

By applying the technical solution of the present embodiment, the cutter head body 10 is provided with a first mounting hole group 11 and a second mounting hole 12, wherein the first mounting hole group 11 includes a plurality of first mounting holes 111, and the first hob 20 is fixedly disposed in the first mounting holes 111. The arrangement mode can ensure that the first hob 20 is stably arranged in the first mounting hole 111, so that the first hob 20 is not easy to fall off when the cutterhead rotates, and the strength of the cutterhead and the cutting effect on soil layers are ensured. Meanwhile, the cutter head body 10 is further provided with a second mounting hole 12, and the cutter arm 30 is detachably arranged in the second mounting hole 12. When the shield tunneling machine excavates a harder soil layer, the cutter head rotates once to cut less broken soil, the broken soil can enter the shield tunneling machine through the first mounting hole 111 and the second mounting hole 12 and is transported away through a transport structure in the shield tunneling machine. When the shield machine excavates the soil layer that hardness is less, can dismantle the cutter arm 30 from the second mounting hole 12, increase the aperture opening ratio of cutter head body 10 for the hack that is cut off can in time be derived from the second mounting hole 12, has avoided the hack that is cut off to pile up in cutter head the place ahead, can not in time derive, influences the tunnelling efficiency of shield machine.

It should be noted that, when the cutter arm 30 is mounted on the cutterhead body 10, the strength of the entire cutterhead can be improved, and the cutterhead is suitable for excavating relatively hard soil. When the shield tunneling machine excavates a soil layer with low hardness, the cutter arm 30 can be detached from the cutter head body 10, so that the overall strength of the cutter head is reduced, but the excavated soil layer is soft, and the strength of the cutter head is enough to support the excavation operation of the shield tunneling machine.

As shown in fig. 1, in the present embodiment, the second mounting holes 12 are plural, and one second mounting hole 12 is provided between every two adjacent first mounting hole groups 11. In the structure, when the shield tunneling machine excavates a soil layer with low hardness, the cutter arm 30 can be detached from the cutter head body 10, and because the second mounting hole 12 is arranged between every two adjacent first mounting hole groups 11, the soil crushed by the first hob 20 can enter the second mounting hole 12 in time, so that the tunneling rate of the shield tunneling machine can be increased.

As shown in fig. 1, in the present embodiment, the ratio of the area of the second mounting hole 12 to the area of the cutter head body 10 is between 0.1 and 0.3. In the above structure, if the ratio of the area of the second mounting hole 12 to the area of the cutter head body 10 is too small, the aperture opening ratio of the cutter head body 10 is too small, which still affects the tunneling rate of the shield tunneling machine. If the ratio of the area of the second mounting hole 12 to the area of the cutter head body 10 is too large, the aperture opening ratio of the cutter head body 10 is too large, which may affect the strength of the cutter head, resulting in easy deformation of the cutter head. Preferably, in the present embodiment, the ratio of the area of the second mounting hole 12 to the cutter head body 10 is 0.15. Of course, in other embodiments not shown in the drawings, the ratio of the area of the second mounting hole 12 to the area of the cutter head body 10 may be 0.1 or 0.3, and the ratio may also be 0.15.

As shown in fig. 1, in the present embodiment, the first roller cutter 20 includes a plurality of first roller cutters 20, and the plurality of first roller cutters 20 are disposed in one-to-one correspondence with the plurality of first mounting holes 111. In the structure, the area of the first mounting hole 111 is larger than that of the first hob 20, and the crushed soil cut by the first mounting hole 111 can enter the tunnel shield machine from the first mounting hole 111, so that the cut crushed soil can enter the first mounting hole 111 in time, and the tunneling rate of the tunnel shield machine is further improved.

As shown in fig. 1 and 2, in the present embodiment, the second mounting hole 12 is a long hole, the cutter arm 30 includes a cutter arm body 31 and a plurality of second roller cutters 32 disposed on the cutter arm body 31, the plurality of second roller cutters 32 are disposed at intervals along the length direction of the cutter arm 30, the cutter arm body 31 is provided with a first connecting hole, the cutter head body 10 is provided with a second connecting hole, and the fastening member is disposed in the first connecting hole and the second connecting hole. In the above configuration, the opening area of the second mounting hole 12 is large, so that a plurality of hobs can be accommodated in one second mounting hole 12. This application is integrated a plurality of hobbing cutters on a cutter arm, forms the cutter arm 30 of this application promptly and includes cutter arm body 31 and wears to establish a plurality of second hobbing cutters 32 on cutter arm body 31. The cutter arm 30 is integrally connected to the cutter head body 10 by a fastener, which improves the assembly efficiency of the second hob 32 and the cutter head body 10. In addition, the connection mode can ensure that the cutter arm 30 and the cutter head body 10 are stably connected.

As shown in fig. 1 and 2, in the present embodiment, the ratio of the area of the second mounting hole 12 to the area of the tool arm body 31 is between 1.8 and 2.2. The structure enables a sufficient material leakage space to be formed between the second mounting hole 12 and the cutter arm body 31 when the cutter arm 30 is mounted in the second mounting hole 12, so that the tunneling efficiency of the shield tunneling machine is improved. Preferably, in the present application, the ratio of the area of the second mounting hole 12 to the area of the tool arm body 31 is 1.8. In other embodiments, the ratio of the area of the second mounting hole 12 to the area of the tool arm body 31 may also be 2.2.

As shown in fig. 1 and 2, in the present embodiment, the cutter arm body 31 includes a main body portion 311 and mounting portions 312 located at both ends in the longitudinal direction of the main body portion 311, the second hob 32 is provided on the main body portion 311, the first connection hole is provided on the mounting portions 312, the cutter head body 10 includes a first end face located at the front end in the boring direction and a second end face located at the rear end in the boring direction, and the mounting portions 312 are connected on the second end face. In the above structure, the mounting portion 312 has an overlapping portion with the cutter head body 10 in the tunneling direction of the shield tunneling machine, and the fastening member passes through the first connection hole in the mounting portion 312 to fix the cutter arm body 31 to the cutter head body 10. The above structure facilitates the fixation of the cutter head body 10 and the cutter arm 30.

As shown in fig. 1 and 2, in the present embodiment, the thickness of the mounting portion 312 is smaller than that of the body portion 311, the body portion 311 extends into the second mounting hole 12, and the end surface of the body portion 311 located at the front end in the heading direction is flush with the first end surface. The cutting edge that above-mentioned structure can make first hobbing cutter 20 and second hobbing cutter 32 can be located the coplanar, guarantees that first hobbing cutter 20 and second hobbing cutter 32 can cut the soil layer simultaneously, has promoted the cutting effect of blade disc to the soil layer.

As shown in fig. 1 and 2, in the present embodiment, the arm 30 further includes a plurality of scrapers 33 disposed on the arm body 31, and the plurality of scrapers 33 are disposed at intervals in the longitudinal direction of the arm body 31. In the structure, the scraper 33 can further improve the cutting effect of the cutter head on the soil layer, and the tunneling efficiency of the shield tunneling machine is improved.

The utility model also provides a shield machine, and the embodiment of the shield machine according to the application comprises the following steps: a shield machine body and a cutter head 40. The shield machine body comprises a driving shaft; the cutter head 40 is provided on the drive shaft, and the cutter head 40 is the cutter head described above. In the structure, the cutter head has the advantage of being capable of improving the tunneling rate of the shield machine, so that the shield machine with the cutter head also has the advantage of being high in tunneling rate.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A cutter head, comprising:

the cutter head comprises a cutter head body (10), wherein a plurality of first mounting hole groups (11) and second mounting holes (12) are formed in the cutter head body (10), each first mounting hole group (11) and each second mounting hole (12) extend along the radial direction of the cutter head body (10), each first mounting hole group (11) comprises a plurality of first mounting holes (111), and each second mounting hole (12) is arranged between two adjacent first mounting hole groups (11);

the first hob (20) is fixedly arranged in the first mounting hole (111);

and the cutter arm (30) is detachably arranged in the second mounting hole (12).

2. The cutter head according to claim 1, characterized in that the second mounting holes (12) are plural, and one second mounting hole (12) is arranged between every two adjacent first mounting hole groups (11).

3. Cutterhead in accordance with claim 1, characterized in that the ratio of the area of the second mounting hole (12) to the area of the cutterhead body (10) is between 0.1 and 0.3.

4. The cutter head according to claim 1, wherein said first roller cutter (20) comprises a plurality of said first roller cutters (20) arranged in one-to-one correspondence with said first mounting holes (111).

5. The cutter head according to claim 1, wherein the second mounting hole (12) is a long hole, the cutter arm (30) comprises a cutter arm body (31) and a plurality of second hobs (32) arranged on the cutter arm body (31) in a penetrating manner, the plurality of second hobs (32) are arranged along the length direction of the cutter arm (30) at intervals, a first connecting hole is formed in the cutter arm body (31), a second connecting hole is formed in the cutter head body (10), and a fastener is arranged in the first connecting hole and the second connecting hole in a penetrating manner.

6. The cutter head according to claim 5, characterized in that the ratio of the area of the second mounting hole (12) to the area of the cutter arm body (31) is between 1.8 and 2.2.

7. The cutterhead of claim 5, wherein the cutter arm body (31) includes a main body portion (311) and mounting portions (312) located at both ends of the length direction of the main body portion (311), the second hob (32) is set on the main body portion (311), the first connecting hole is set on the mounting portions (312), the cutterhead body (10) includes a first end face located at the front end of the tunneling direction and a second end face located at the rear end of the tunneling direction, and the mounting portions (312) are connected on the second end face.

8. The cutterhead according to claim 7, wherein the thickness of the mounting portion (312) is less than the thickness of the main body portion (311), the main body portion (311) extends into the second mounting hole (12), and the end surface of the main body portion (311) at the front end in the heading direction is flush with the first end surface.

9. The cutter head according to claim 5, wherein the cutter arm (30) further comprises a plurality of scrapers (33) provided on the cutter arm body (31), the plurality of scrapers (33) being provided at intervals in a length direction of the cutter arm body (31).

10. A shield tunneling machine comprising:

the shield machine body comprises a driving shaft;

a cutter head (40) arranged on said drive shaft, characterized in that said cutter head (40) is a cutter head according to any one of claims 1 to 9.

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