CN221277737U

CN221277737U - Shield constructs quick-witted cutter for subway construction

Info

Publication number: CN221277737U
Application number: CN202323520690.7U
Authority: CN
Inventors: 王智强
Original assignee: Third Engineering Co Ltd of China Railway 18th Bureau Group Co Ltd
Current assignee: Third Engineering Co Ltd of China Railway 18th Bureau Group Co Ltd
Priority date: 2023-12-22
Filing date: 2023-12-22
Publication date: 2024-07-05
Anticipated expiration: 2033-12-22

Abstract

The utility model discloses a shield machine cutter for subway construction, which relates to the technical field of subway construction and comprises a hob main body, a rotating shaft and a hob ring body, wherein the rotating shaft is arranged in the middle of the hob main body.

Description

Shield constructs quick-witted cutter for subway construction

Technical Field

The utility model relates to the technical field of subway construction, in particular to a shield tunneling machine cutter for subway construction.

Background

With the rapid advancement of the urbanization process, the need for underground infrastructure construction is becoming urgent. Under the background, the shield machine is used as a modern sharp tool for leading the underground tunnel engineering technology, the advanced working principle and the excellent performance of the shield machine are highlighted, the core component of the shield machine is composed of basic components such as a cutter, a tunneling mechanism, a supporting system, a slurry circulating system and the like, and all the components are closely cooperated to jointly realize the efficient excavation of the tunnel.

The shield hob is one of a plurality of cutters of a shield machine, when a shield is excavated in a rock stratum, the hob installed on a cutter head rotates along with the cutter head, and the thrust generated by the cutter head is utilized to break rock, so that the hob is severely abraded by abrasive materials of the rock during working, the consumption is large, the shield hob is one of main vulnerable parts of the shield, the surface of a cutter ring of the existing hob is too smooth, the grinding effect on the rock is general (as shown in a physical diagram provided by an attached drawing of an attached drawing 4 of the specification), and the rock breaking efficiency is not high enough.

Disclosure of utility model

The utility model aims to provide a shield tunneling machine cutter for subway construction, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a shield constructs quick-witted cutter for subway construction, includes hobbing cutter main part, pivot and hobbing cutter circle body, the centre of hobbing cutter main part is provided with the pivot, the bearing is installed to hobbing cutter main part both ends embedding, bearing and pivot fixed connection, be provided with round lubricating oil between hobbing cutter main part inside and the pivot and store the chamber, the hobbing cutter main part both ends just set up the oil groove to the bearing, the oil groove communicates with lubricating oil storage chamber, the outside cover of hobbing cutter main part is equipped with the hobbing cutter circle body, the outer edge of hobbing cutter circle body is provided with the cutting edge subassembly, install long screw in the hobbing cutter main part, hobbing cutter main part passes through long screw and hobbing cutter main part fixed connection.

As a further scheme of the utility model: the cutter blade assembly comprises an upper cutter blade and a lower cutter blade, and the upper cutter blade and the lower cutter blade are arranged in a ring shape in a staggered manner up and down at the outer edge of the hob ring body.

As still further aspects of the utility model: the long screw rods are arranged in the front, back, left and right directions of the hob ring body, threaded holes are formed in the hob main body right opposite to the four long screw rods, and the long screw rods are in threaded fit with the threaded holes.

As still further aspects of the utility model: the threaded hole is communicated with the lubricating oil storage cavity.

As still further aspects of the utility model: and a bearing sealing cover is arranged on the outer end surface of the bearing.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the utility model, the cutter blade assemblies are arranged on the outer edges of the hob ring body, the upper cutter blades and the lower cutter blades in the cutter blade assemblies are distributed in an up-down staggered manner on the outer edges of the hob ring body, and the upper cutter blades and the lower cutter blades extrude the rock under the action of the forward power of the shield tunneling machine and simultaneously cut the rock to form cracks, so that the rock blocks between the two cracks fall off rapidly along with continuous tunneling, and the rock breaking tunneling efficiency is improved.

2. According to the utility model, the lubricating oil storage cavity and the oil groove are arranged, the lubricating oil storage cavity can store lubricating oil, the lubricating oil can be automatically supplemented into the bearing through the oil groove, the bearing is prevented from influencing the operation of the cutter due to the lack of the lubricating oil, meanwhile, workers do not need to frequently add the lubricating oil into the bearing, the labor intensity of the workers is reduced, the threaded hole matched with the long screw rod is also used as an oil filling port, the lubricating oil can be conveniently supplemented into the lubricating oil storage cavity, the long screw rod can seal the oil filling port, and oil leakage is prevented.

3. According to the hob body and hob ring body, the hob body and the hob ring body are fixed through the four long screws, when the cutting edge or the hob ring body is severely worn or damaged, only the hob ring body is required to be replaced independently, other structures can still be used continuously, and therefore the use cost can be reduced.

Drawings

Fig. 1 is a front sectional view of a shield tunneling machine cutter for subway construction.

Fig. 2 is a front view of a shield tunneling machine cutter for subway construction.

Fig. 3 is a plan view of a shield tunneling machine cutter for subway construction.

Fig. 4 is a diagram of a conventional shield tunneling machine hob.

1. A hob body; 2. a rotating shaft; 3. a bearing; 4. a lubricant oil storage chamber; 5. an oil groove; 6. a hob ring body; 7. a long screw; 8. a threaded hole; 9. a blade assembly; 901. an upper blade; 902. a lower blade; 10. a boss; 11. a groove portion; 12. and a bearing sealing cover.

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.

Referring to fig. 1-3, in the embodiment of the utility model, a shield machine cutter for subway construction comprises a hob main body 1, a rotating shaft 2 and a hob ring body 6, wherein the rotating shaft 2 is arranged in the middle of the hob main body 1, bearings 3 are embedded at two ends of the hob main body 1, the bearings 3 are fixedly connected with the rotating shaft 2, the hob ring body 6 is sleeved outside the hob main body 1, a cutter edge assembly 9 is arranged at the outer edge of the hob ring body 6, a long screw 7 is arranged on the hob main body 1, the hob main body 1 is fixedly connected with the hob main body 1 through the long screw 7, the cutter edge assembly 9 comprises an upper cutter edge 901 and a lower cutter edge 902, the upper cutter edge 901 and the lower cutter edge are arranged in an annular up-down staggered manner at the outer edge of the hob ring body 6, so that a rock cutting seam is wider, the rock falling speed is faster, during use, the cutter edge assembly 9 arranged at the outer edge of the hob ring body 6 can squeeze and cut the rock along with the rock in the rotating process of the rotating shaft 2, the rock forms a radial shape under the double action of being squeezed and cut, along with the further radial crack of the shield machine, the two radial cutter blocks extend mutually, the cutter edge 7 can be directly removed by a threaded hole 8 after the screw hole is filled with the two radial cutter blocks, and the two screw holes are broken along with the screw hole 8, and the purpose of the screw hole is reached to be directly broken, and the screw hole is broken, and the cutter can be removed by a person when the screw hole is broken by the screw hole is broken, and the cutter is broken by the screw hole and can be directly by the threaded by the screw along with the purpose and the screw hole 8, and the screw hole is broken by the screw.

Referring to fig. 1-2, a circle of lubricating oil storage cavity 4 is arranged between the inside of the hob main body 1 and the rotating shaft 2, two ends of the hob main body 1 are opposite to the bearings 3, oil grooves 5 are formed in the two ends of the hob main body 1 and are communicated with the lubricating oil storage cavity 4, long screws 7 are respectively arranged in the front, back, left and right directions of the hob ring body 6, threaded holes 8 are formed in the hob main body 1 opposite to the four long screws 7, the long screws 7 are in threaded fit with the threaded holes 8, the threaded holes 8 are communicated with the lubricating oil storage cavity 4, lubricating oil can be conveniently added into the lubricating oil storage cavity 4 through the threaded holes 8, in the use process, lubricating oil parts in the lubricating oil storage cavity 4 can flow into the two end oil grooves 5, then enter the two end bearings 3 through the oil grooves 5, lubricating the bearings 3 is avoided, and the operation of a cutter is prevented from being influenced by the lack of lubricating oil of the bearings 3.

Referring to fig. 3, a bearing sealing cover 12 is mounted on the outer end surface of the bearing 3, the bearing sealing cover 12 can prevent lubricating oil from leaking outwards, a protruding portion 10 is arranged on the outer wall of the hob main body 1, and the protruding portion 10 is matched with a groove portion 11 formed on the inner wall of the hob ring body 6.

Although the present utility model has been described 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 and 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 machine cutter for subway construction, includes hobbing cutter main part (1), pivot (2) and hobbing cutter circle body (6), its characterized in that: the novel hob comprises a hob body (1), wherein a rotating shaft (2) is arranged in the middle of the hob body (1), bearings (3) are embedded in two ends of the hob body (1), the bearings (3) are fixedly connected with the rotating shaft (2), a circle of lubricating oil storage cavity (4) is arranged between the inside of the hob body (1) and the rotating shaft (2), oil grooves (5) are formed in the two ends of the hob body (1) opposite to the bearings (3), the oil grooves (5) are communicated with the lubricating oil storage cavity (4), hob ring bodies (6) are sleeved outside the hob body (1), edge assemblies (9) are arranged on the outer edges of the hob ring bodies (6), and long screws (7) are arranged on the hob body (1), and the hob body (1) is fixedly connected with the hob body (1) through the long screws (7).

2. The shield tunneling machine cutter for subway construction according to claim 1, wherein: the cutter blade assembly (9) comprises an upper cutter blade (901) and a lower cutter blade (902), and the upper cutter blade (901) and the lower cutter blade (902) are arranged in an annular up-down staggered mode on the outer edge of the hob ring body (6).

3. The shield tunneling machine cutter for subway construction according to claim 1, wherein: the hob ring body (6) is characterized in that long screws (7) are arranged in the front, back, left and right directions, threaded holes (8) are formed in the hob body (1) opposite to the four long screws (7), and the long screws (7) are in threaded fit with the threaded holes (8).

4. A shield tunneling machine cutter for subway construction according to claim 3, wherein: the threaded hole (8) is communicated with the lubricating oil storage cavity (4).

5. The shield tunneling machine cutter for subway construction according to claim 1, wherein: the outer end face of the bearing (3) is provided with a bearing sealing cover (12).