CN220599810U

CN220599810U - Hobbing cutter of shield machine

Info

Publication number: CN220599810U
Application number: CN202322375883.1U
Authority: CN
Inventors: 胡孝军; 鲍庆; 车永生; 宋路生
Original assignee: Anhui Lingli Equipment Technology Co ltd
Current assignee: Anhui Lingli Equipment Technology Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-15
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a hob of a shield machine, which relates to the technical field of shield machines and comprises a cutter body, wherein a boss and an expansion ring are arranged on the outer ring of the cutter body, the outer ring of the expansion ring is provided with a cutter ring, the cutter ring is attached to the boss, and the outer ring of the cutter ring is provided with a guide groove to form two cutting edges; the outer ring of the cutter body is also provided with a check ring, and one side of the check ring is attached to the cutter ring; the expansion ring and the knife ring are provided with first anti-channeling pieces, second anti-channeling pieces are arranged between the check ring and the knife ring and between the boss and the knife ring, and a plurality of counter bores are formed in the check ring. According to the utility model, by adopting the digging mode of the two blades, harder rock stratum can be quickly and effectively dug, the damage and scrapping probability of the cutter body caused by eccentric wear of the cutter ring is reduced, the service life is long, the cutter ring is detachable, the worn cutter ring is convenient to replace, the whole disassembly and replacement are not needed, and the use cost is reduced.

Description

Hobbing cutter of shield machine

Technical Field

The utility model relates to the technical field of shield machines, in particular to a hob of a shield machine.

Background

The shield machine is increasingly widely applied to major projects such as urban subways, railway and highway traffic, energy transportation, underground passages and the like, and has the advantages of high excavation speed, high construction quality, low labor intensity, economy, environmental protection and the like. The cutterhead is a core component of the shield, the cutter is a specific executive component for tunneling, the cutterhead is equivalent to teeth of a shield machine, and the cutterhead is a main component for realizing the tunneling function of the shield machine.

For example, the utility model discloses a hobbing cutter for shield machine that CN211314220U proposed, be inconvenient for carrying out the dismouting when using to current shield machine hobbing cutter, change inconvenient problem when damaging, the present proposal is including the hobbing cutter body, peg graft in the hobbing cutter body and have the pivot, the outside fixed mounting of pivot has the limiting plate, and one side of limiting plate contacts with the one end of hobbing cutter body, reset groove has all been seted up to the top and the bottom of pivot, and two reset inslot equal slidable mounting have reset piece, and one side of two reset pieces all contacts with the other end of hobbing cutter body, and one side that two reset pieces all fixed mounting have reset spring's one end that one side is close to each other, one side inner wall fixed connection that two reset spring's the other end is close to each other with two reset grooves respectively.

The hob body is convenient to disassemble and assemble, and is convenient to replace when the hob body is damaged, and the hob body is simple in structure and convenient to use; however, the applicant found that when the hob digs the rock stratum, the probability of damage to the cutter ring is larger than that of the cutter body, the cutter ring is easy to wear and deform, the use cost is increased if the whole hob is replaced, and the efficiency is low in a single-blade digging mode.

Disclosure of Invention

Aiming at the problems, the application provides a hob of a shield machine.

In order to achieve the above purpose, the present application provides the following technical solutions: the hob for the shield machine comprises a hob body, wherein a boss and an expansion ring are arranged on the outer ring of the hob body, the outer ring of the expansion ring is provided with the hob ring, the hob ring is attached to the boss, and a guide groove is formed in the outer ring of the hob ring to form two cutting edges;

the outer ring of the cutter body is also provided with a check ring, and one side of the check ring is attached to the cutter ring;

the expansion ring and the knife ring are provided with a first anti-channeling piece, and a second anti-channeling piece is arranged between the check ring and the knife ring and between the boss and the knife ring.

Preferably, the check ring is provided with a plurality of counter bores, the cutter body is provided with a plurality of screw holes, bolts penetrate through the counter bores and the screw holes, the check ring is fixed on the cutter body, and the cutter ring is fixed under the cooperation of the boss.

Preferably, the first channeling preventing member comprises a plurality of limiting teeth arranged on the outer ring of the expansion ring, and a plurality of limiting grooves matched with the limiting teeth are formed in the inner ring of the cutter ring.

Preferably, the second anti-channeling piece comprises a plurality of protruding blocks fixedly connected to two sides of the cutter ring, and a plurality of grooves matched with the protruding blocks are fixedly connected to one sides, close to each other, of the check ring and the protruding blocks.

Preferably, a rotating shaft penetrates through the middle of the cutter body.

In summary, the utility model has the technical effects and advantages that:

according to the utility model, by adopting the digging mode of the two blades, harder rock stratum can be quickly and effectively dug, the damage and scrapping probability of the cutter body caused by eccentric wear of the cutter ring is reduced, the service life is long, the cutter ring is detachable, the worn cutter ring is convenient to replace, the whole disassembly and replacement are not needed, and the use cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a three-dimensional structure of a hob of a shield machine.

Fig. 2 is a schematic view of an explosive structure from a first perspective.

Fig. 3 is a second schematic diagram of an explosive structure.

In the figure: 1. a rotating shaft; 2. a cutter body; 201. a wire hole; 202. a boss; 3. a retainer ring; 301. countersink; 4. a knife ring; 401. a guide groove; 402. a bump; 403. a limit groove; 5. an expansion ring; 501. limit teeth; 6. a bolt; 7. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: 1-3, the shield tunneling machine hob comprises a hob body 2, a boss 202 and an expansion ring 5 are arranged on the outer ring of the hob body 2, a hob ring 4 is arranged on the outer ring of the expansion ring 5, the hob ring 4 is attached to the boss 202, a guide groove 401 is formed in the outer ring of the hob ring 4, two cutting edges are formed, and harder rock strata can be excavated quickly and effectively in an excavating mode of the two cutting edges;

in particular use, a plurality of bar-shaped protrusions may be provided on the guide groove 401 to provide more crush support points.

In order to fix the cutter ring 4, as shown in fig. 2 and 3, a retainer ring 3 is further arranged on the outer ring of the cutter body 2, and one side of the retainer ring 3 is attached to the cutter ring 4;

in order to prevent the cutter ring 4 from moving, a first anti-moving part is arranged between the expansion ring 5 and the cutter ring 4, and a second anti-moving part is arranged between the check ring 3 and the cutter ring 4 and between the boss 202 and the cutter ring 4.

In order to facilitate the installation and the disassembly of the cutter ring 4, as shown in fig. 1-3, a plurality of counter bores 301 are formed in the retainer ring 3, a plurality of screw holes 201 are formed in the cutter body 2, bolts 6 penetrate through the counter bores 301 and the screw holes 201, the retainer ring 3 is fixed on the cutter body 2, and the cutter ring 4 is fixed under the cooperation of the boss 202.

As shown in fig. 2, the first channeling preventing member includes a plurality of limiting teeth 501 disposed on an outer ring of the expansion ring 5, and a plurality of limiting grooves 403 matched with the limiting teeth 501 are disposed on an inner ring of the cutter ring 4.

The cutter ring 4 is sleeved on the outer ring of the expansion ring 5, and the cutter ring 4 is initially limited under the cooperation of the limiting teeth 501 and the limiting grooves 403, so that long-distance movement between the expansion ring 5 and the cutter ring 4 can not occur; and the cutter ring 4 contacts with the rock soil to roll and crush the rock soil, and mechanical heat energy generated in the rolling process enables the expansion piece 4 to be heated and linearly expand, so that gaps between the cutter ring 4 and the expansion ring 5 are gradually filled, and the cutter ring is ensured not to move.

In order to further improve the channeling preventing effect, as shown in fig. 1-3, the second channeling preventing member comprises a plurality of protruding blocks 402 fixedly connected to two sides of the cutter ring 4, a plurality of grooves 7 matched with the protruding blocks 402 are fixedly connected to one sides, close to each other, of the retaining ring 3 and the protruding blocks 202, the probability of damage and scrapping of the cutter body 2 caused by eccentric wear of the cutter ring 4 is reduced, and the service life is long.

As shown in fig. 1-3, a rotating shaft 1 is arranged in the middle of a cutter body 2 in a penetrating manner, and a cutter ring 4 is rotated through the rotating shaft 1 to roll and crush rock and soil.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a shield constructs quick-witted hobbing cutter, includes cutter body (2), its characterized in that: the outer ring of the cutter body (2) is provided with a boss (202) and an expansion ring (5), the outer ring of the expansion ring (5) is provided with a cutter ring (4), the cutter ring (4) is attached to the boss (202), and the outer ring of the cutter ring (4) is provided with a guide groove (401) to form two cutting edges;

the outer ring of the cutter body (2) is also provided with a retainer ring (3), and one side of the retainer ring (3) is attached to the cutter ring (4);

a first anti-channeling piece is arranged between the expansion ring (5) and the cutter ring (4), and a second anti-channeling piece is arranged between the retainer ring (3) and the cutter ring (4) and between the boss (202) and the cutter ring (4).

2. The shield tunneling machine hob according to claim 1, characterized in that: a plurality of counter bores (301) are formed in the check ring (3), a plurality of screw holes (201) are formed in the cutter body (2), bolts (6) penetrate through the counter bores (301) and the screw holes (201), the check ring (3) is fixed on the cutter body (2), and the cutter ring (4) is fixed under the cooperation of the boss (202).

3. The shield tunneling machine hob according to claim 1, characterized in that: the first channeling prevention piece comprises a plurality of limiting teeth (501) arranged on the outer ring of the expansion ring (5), and a plurality of limiting grooves (403) matched with the limiting teeth (501) are formed in the inner ring of the cutter ring (4).

4. The shield tunneling machine hob according to claim 1, characterized in that: the second anti-channeling piece comprises a plurality of protruding blocks (402) fixedly connected to two sides of the cutter ring (4), and a plurality of grooves (7) matched with the protruding blocks (402) are fixedly connected to one sides, close to each other, of the check ring (3) and the protruding blocks (202).

5. The shield tunneling machine hob according to claim 1, characterized in that: the middle of the cutter body (2) is provided with a rotating shaft (1) in a penetrating way.