CN216277879U

CN216277879U - Hob cutter

Info

Publication number: CN216277879U
Application number: CN202122237998.5U
Authority: CN
Inventors: 陈美婷; 陈国昌; 郑杨锐; 黄健聪; 刘志诚; 靳建伟; 何自行; 李川; 陈超恒; 刁锦华
Original assignee: Guangdong Xinlong Tunnel Equipment Co ltd
Current assignee: Guangdong Xinlong Tunnel Equipment Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-12
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a hob, which comprises a hob body, wherein a cutter ring which protrudes outwards along the direction far away from the center of the hob body is arranged on the hob body, a mounting hole is formed in the peripheral wall of the cutter ring, a wear-resistant block is detachably connected in the mounting hole, and the wear-resistant block is provided with a wear-resistant main body protruding out of the cutter ring.

Description

Hob cutter

Technical Field

The utility model relates to a drilling or cutting tool, in particular to a hob.

Background

In the shield constructs quick-witted blade disc, the hobbing cutter plays important effect in the excavation, and the hobbing cutter can adapt to the soil of different characteristics, can also break the rubble that meets in the excavation, because the cutter ring of hobbing cutter is as main stress surface, is easily abraded in work, needs to change whole hobbing cutter after long-time the use, and the dismouting is troublesome to it is with high costs.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a hob that solves one or more of the problems of the prior art and provides at least one useful alternative or creation.

The solution of the utility model for solving the technical problem is as follows:

the utility model provides a hob, includes the cutter body, have on the cutter body along keeping away from its central direction outside convex cutter ring, the periphery wall of cutter ring is provided with the mounting hole, detachably is connected with wear-resisting piece in the mounting hole, wear-resisting piece have protrusion in the wear-resisting main part of cutter ring.

The technical scheme at least has the following beneficial effects: the outer peripheral wall of the cutter ring is provided with the mounting hole, the wear-resistant block is arranged in the mounting hole, when the hob is in work, the wear-resistant block protrudes out of the wear-resistant main body of the cutter ring, so that the abrasion of foreign objects to the surface of the cutter ring can be reduced, the service cycle of the hob is prolonged, the wear-resistant block can be assembled and disassembled on the cutter ring through the matching of the wear-resistant block and the mounting hole, the wear-resistant block with serious abrasion can be independently replaced according to the inconsistent abrasion degree of the wear-resistant block at different positions, and the hob is very flexible and convenient to use.

As a further improvement of the above technical solution, the wear-resistant block includes a connecting stud, the connecting stud is connected in the mounting hole by a thread, and the wear-resistant block is connected to an end of the connecting stud. The wear-resisting main part passes through the screw-thread fit of connecting stud and mounting hole, realizes the quick assembly disassembly from the cutter ring to connection structure is firm, is difficult to drop when striking with the foreign object.

As a further improvement of the technical scheme, a wrench hole is formed in the end face, far away from the cutter ring, of the wear-resistant main body. The wear-resistant block can be screwed out by stretching the tool into the wrench hole, so that the tool is more convenient to disassemble and assemble.

As a further improvement of the above technical solution, the wrench hole extends to an end surface of the connection stud. The end face of the connecting stud is provided with a wrench hole which is the same as that of the wear-resistant main body, so that the problem that the wrench hole in the wear-resistant main body is abraded or the wear-resistant main body is deformed to cause that a tool cannot be matched with the wrench hole is solved.

As a further improvement of the technical scheme, the wrench hole is a hexagon socket. The hexagonal key can be inserted into the inner hexagonal hole, and the wear-resistant block can be conveniently screwed out.

As a further improvement of the above technical solution, the cutter body includes a cutter shaft, a bearing and a cutter hub, the cutter shaft is rotatably connected in the cutter hub through the bearing, a groove is formed around the outer peripheral wall of the cutter hub, and the cutter ring is sleeved in the groove. The cutter shaft is connected to an external structure, the cutter hub and the cutter shaft can rotate relatively through the matching of the bearing, and the cutter ring is positioned on the cutter hub through the matching of the cutter ring and the groove.

As a further improvement of the technical scheme, the cutter shaft is provided with end covers, and the two ends of the cutter hub are provided with the end covers. The end cover can shield the two ends of the bearing, and foreign objects are prevented from entering the bearing.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is an elevational view of the overall construction of the present invention;

fig. 2 is a schematic view of the sectional structure a-a of fig. 1.

In the drawings: 100-cutter body, 110-cutter shaft, 120-bearing, 130-cutter hub, 140-cutter ring, 150-end cover, 200-wear-resistant block, 210-wear-resistant main body and 220-connecting stud.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 and 2, the hob cutter comprises a cutter body 100, wherein the cutter body 100 is provided with a cutter ring 140 protruding outwards in a direction away from the center of the cutter ring 100, the outer peripheral wall of the cutter ring 140 is provided with a mounting hole, a wear-resistant block 200 is detachably connected in the mounting hole, and the wear-resistant block 200 is provided with a wear-resistant main body 210 protruding out of the cutter ring 140.

From the above, the outer peripheral wall of the cutter ring 140 is provided with the mounting hole, and the wear-resistant block 200 is installed in the mounting hole, when in operation, the wear-resistant block 200 protrudes out of the wear-resistant main body 210 of the cutter ring 140, so that the abrasion of the foreign object to the surface of the cutter ring 140 can be reduced, the service cycle of the hob can be prolonged, the wear-resistant block 200 can be assembled and disassembled on the cutter ring 140 through the matching with the mounting hole, the wear-resistant block 200 with serious abrasion can be independently replaced according to the inconsistent abrasion degree of the wear-resistant blocks 200 at different positions, and the application is very flexible and convenient.

As a further embodiment of the wear-resistant block 200 detachably connected to the cutter ring 140, the wear-resistant block 200 includes a connecting stud 220, the connecting stud 220 is screwed into the mounting hole, and the wear-resistant block 200 is connected to an end of the connecting stud 220. The wear-resistant main body 210 is matched with the thread of the mounting hole through the connecting stud bolt 220, so that the quick assembly and disassembly from the cutter ring 140 are realized, and the connecting structure is stable and is not easy to fall off when being impacted by foreign objects.

To facilitate the installation of the connecting stud 220 into the mounting hole, in the present embodiment, the end surface of the wear body 210 remote from the cutter ring 140 is provided with a wrench hole. The wear-resisting block 200 can be screwed out by extending a tool into the wrench hole, so that the disassembly and the assembly are more convenient.

In practical applications, if the wear-resistant body 210 is abraded more severely, the wrench hole in the wear-resistant body 210 is damaged more severely, and is hard to be forced when inserting a tool, in this embodiment, the wrench hole extends to the end face of the connecting stud 220. The same wrench hole as that of the wear-resistant body 210 is provided on the end surface of the connection stud 220 to prevent the wrench hole in the wear-resistant body 210 from being abraded or the wear-resistant body 210 from being deformed, resulting in a problem that a tool cannot be fitted into the wrench hole.

The wrench hole is mainly used for conveniently rotating the wear-resistant block 200 when a tool is inserted, and has various structural shapes, such as a quadrangular hole, a triangular hole and the like. The wear-resistant block 200 can be conveniently screwed out by inserting the hexagonal key into the inner hexagonal hole.

As a structural embodiment of the cutter body 100, the cutter body 100 includes a cutter shaft 110, a bearing 120 and a cutter hub 130, the cutter shaft 110 is rotatably connected in the cutter hub 130 through the bearing 120, a groove is circumferentially formed on an outer circumferential wall of the cutter hub 130, and the cutter ring 140 is sleeved in the groove. The knife shaft 110 is connected to an external structure, the knife hub 130 and the knife shaft 110 can rotate relatively through the matching of the bearing 120, and the knife ring 140 is positioned on the knife hub 130 through the matching of the knife ring and the groove.

In this embodiment, the cutter shaft 110 is provided with an end cap 150, and the end caps 150 are disposed at both ends of the cutter hub 130. The end caps 150 can shield both ends of the bearing 120, so as to reduce foreign objects from entering the bearing 120.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims

1. A hobbing cutter, its characterized in that: the cutter comprises a cutter body (100), wherein a cutter ring (140) protruding outwards along the direction far away from the center of the cutter ring (100) is arranged on the cutter body, a mounting hole is formed in the peripheral wall of the cutter ring (140), a wear-resistant block (200) is detachably connected in the mounting hole, and the wear-resistant block (200) is provided with a wear-resistant main body (210) protruding out of the cutter ring (140).

2. The hob according to claim 1, characterized in that: the wear-resistant block (200) comprises a connecting stud (220), the connecting stud (220) is connected in the mounting hole through threads, and the wear-resistant block (200) is connected to the end of the connecting stud (220).

3. The hob according to claim 2, characterized in that: the end face, far away from the cutter ring (140), of the wear-resistant main body (210) is provided with a wrench hole.

4. A hob according to claim 3, characterized in that: the wrench hole extends to the end face of the connecting stud (220).

5. A hob according to claim 3, characterized in that: the wrench hole is an inner hexagonal hole.

6. The hob according to claim 1, characterized in that: the cutter body (100) comprises a cutter shaft (110), a bearing (120) and a cutter hub (130), the cutter shaft (110) is rotatably connected into the cutter hub (130) through the bearing (120), a groove is formed in the peripheral wall of the cutter hub (130) in a surrounding mode, and the cutter ring (140) is sleeved in the groove.

7. The hob according to claim 6, characterized in that: an end cover (150) is arranged on the cutter shaft (110), and the end covers (150) are arranged at two ends of the cutter hub (130).