CN219587575U

CN219587575U - Cutter head reducing device of shield machine

Info

Publication number: CN219587575U
Application number: CN202320338679.XU
Authority: CN
Inventors: 王以栋; 王西韦; 庞丕杰
Original assignee: China Ship Qingdao Rail Transportation Equipment Co ltd
Current assignee: China Ship Qingdao Rail Transportation Equipment Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-08-25
Anticipated expiration: 2033-02-28

Abstract

The utility model relates to a cutter head diameter-changing device of a shield machine, which comprises a cutter head main body and is characterized in that the hob track of the cutter head main body is a spiral line, and an outer ring between a panel of the cutter head main body and an edge scraper is disconnected; the panel of the cutter head main body is disconnected with the ring rib; repair welding is carried out on spoke positions of the cutter head main body according to the positioned size of the panel, so that the excircle of the cutter head main body can be smoothly transited; all panels are increased by a first preset length along the radial direction; the outermost edge of the edge scraper of the cutterhead main body forms an arc line; the tearing knife on the panel is moved outwards by a second preset length, and the spoke tearing knife is moved outwards by a third preset length. The utility model has the advantages that: 1. realize the diameter change of the cutterhead with similar diameter and save raw materials. 2. The product cost is reduced, and the research and development period of the novel cutterhead is shortened. 3. The shield machine product serialization, modularization and parameterization design can be promoted.

Description

Cutter head reducing device of shield machine

Technical Field

The utility model relates to a cutter head diameter-changing device of a shield machine, and belongs to the field of cutter heads.

Background

The diameter range of the common cutter head of the shield is 3-15m. In the construction of railway subways, the diameter is most commonly about 6 m. The outer diameter of the segment is 6m, and the excavation diameter of the cutterhead is required to be 6.3m in combination with the shield construction technology. The diameter of the pipe piece is 6.2m, and the excavation diameter of the cutter disc is 6.5m in combination with the shield construction technology. The segment diameter corresponds to one type of cutterhead, thus requiring two types of cutterheads (6 m and 6.2 m). The cost of a new cutterhead is about 200 ten thousand. The design and manufacturing period is half a year, and only four kilometers and five kilometers of the cutterhead of a part of shield machine are driven, the service life is far short, so that the design of reducing transformation on the cutterhead with similar diameters is particularly important, raw materials can be saved, the product cost is reduced, the research and development period of a novel cutterhead is shortened, and the serialization, modularization and parameterization design of the shield machine product can be promoted.

In soft rock shields, the size of the excavated diameter of the tunnel is controlled by the radial dimensions of the cutter head body of the soft rock shield and the cutters disposed thereon. In the aspect of the research of the diameter-changing cutter disc, the most relevant technology theoretical research of the diameter-changing technology of the shield machine of the medium-iron fourteen-bureau Tang subarmy is that the aspects related to the diameter changing of the shield are only described in the whole. The manufacturing company Li Jian of the middle-iron tunnel equipment realizes the small-range diameter change of the soft rock shield by the design of the telescopic variable scraper, and the diameter change range is about 50 mm. The diameter change of the cutterhead in a small range can be obtained by changing the cutter, adjusting the height of the cutter box seat and realizing the diameter change of the cutterhead by the oil cylinder type remote control expanding and digging cutter (the diameter change is within 100 mm), and the larger diameter change is seriously worn on the cutterhead by the method. However, the study of reducing by changing the cutter head body has not yet appeared.

Disclosure of Invention

The cutter head body is changed in diameter, so that the cutter head with similar diameter can be changed in diameter, raw materials are saved, the product cost is reduced, the research and development period of the novel cutter head is shortened, the serial, modularized and parameterized design of the shield machine product can be promoted, the market demand is rapidly met, and the raw materials are saved.

The utility model provides a shield tunneling machine cutterhead reducing device, which has the technical scheme that:

a cutter head reducing device of a shield machine comprises a cutter head main body, wherein the hob track of the cutter head main body is a spiral line, and an outer ring between a panel of the cutter head main body and an edge scraper is disconnected; the panel of the cutter head main body is disconnected with the ring rib; repair welding is carried out on spoke positions of the cutter head main body according to the positioned size of the panel, so that the excircle of the cutter head main body can be smoothly transited; all panels are increased by a first preset length along the radial direction; the outermost edge of the edge scraper of the cutterhead main body forms an arc line; the tearing knife on the panel is moved outwards by a second preset length, and the spoke tearing knife is moved outwards by a third preset length; and repairing and welding the annular block after the center line of the spoke tearing knife rotates a preset angle in the clockwise or anticlockwise direction.

The length values of the first preset length, the second preset length and the third preset length are all 100mm.

The cutter head main body is provided with a single-edge hob and a double-edge hob.

The single-blade hob is arranged at a 180-degree spoke of the cutterhead main body.

The utility model has the advantages that:

1. realize the diameter change of the cutterhead with similar diameter and save raw materials.

2. The product cost is reduced, and the research and development period of the novel cutterhead is shortened.

3. The shield machine product serialization, modularization and parameterization design can be promoted.

Drawings

Fig. 1 is a schematic diagram of the main structure of the present utility model.

Fig. 2 is a schematic view of the arc scraper of fig. 1.

Description of the embodiments

The utility model will be further described with reference to specific embodiments, and advantages and features of the utility model will become apparent from the description. These examples are merely exemplary and do not limit the scope of the utility model in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present utility model may be made without departing from the spirit and scope of the present utility model, but these changes and substitutions fall within the scope of the present utility model.

Referring to fig. 1 and 2, the utility model relates to a cutter head reducing device of a shield machine, which comprises a cutter head main body 1, wherein the hob track of the cutter head main body 1 is a spiral line (practice proves that the spiral line has strong rock breaking and soil breaking capabilities), and an outer ring between a panel 3 of the cutter head main body and an edge scraper is disconnected; the panel 3 of the cutterhead main body 1 is disconnected with the ring rib 2; repair welding is carried out on spoke positions of the cutter head main body 1 according to the positioned size of the panel 3, so that the excircle of the cutter head main body 1 can be smoothly transited; all panels 3 are radially increased by a first preset length; the outermost edge of the edge scraper of the cutterhead main body 1 forms an arc line; the tearing knife on the panel is moved outwards by a second preset length, and the spoke tearing knife is moved outwards by a third preset length; and repairing and welding the annular block after the center line of the spoke tearing knife rotates a preset angle in the clockwise or anticlockwise direction.

The cutter head main body 1 is provided with a single-blade hob and a double-blade hob.

The single-blade hob is arranged at a 180-degree spoke of the cutterhead main body 1.

The working principle of the utility model is as follows:

by arranging the utility model, two single-edge hobs are added, the trajectories of the hobs, the scrapers and the tearing knives are redesigned, and then the rigidity and the strength of the cutterhead are ensured through a welding process. The cutter head body is changed in diameter, so that the cutter head with similar diameter is changed in diameter, raw materials are saved, the product cost is reduced, the research and development period of the novel cutter head is shortened, and the serial, modularized and parameterized design of the shield machine product can be promoted.

Through cutter head body reducing, satisfy market demand fast, practice thrift raw and other materials, reduce product cost shortens novel cutter head research and development cycle.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The cutter head diameter-changing device of the shield machine comprises a cutter head main body and is characterized in that the hob track of the cutter head main body is a spiral line, and an outer ring between a panel of the cutter head main body and an edge scraper is disconnected; the panel of the cutter head main body is disconnected with the ring rib; repair welding is carried out on spoke positions of the cutter head main body according to the positioned size of the panel, so that the excircle of the cutter head main body can be smoothly transited; all panels are increased by a first preset length along the radial direction; the outermost edge of the edge scraper of the cutterhead main body forms an arc line; the tearing knife on the panel is moved outwards by a second preset length, and the spoke tearing knife is moved outwards by a third preset length; and repairing and welding the annular block after the center line of the spoke tearing knife rotates a preset angle in the clockwise or anticlockwise direction.

2. The cutter head diameter-changing device of a shield tunneling machine according to claim 1, wherein the first preset length, the second preset length and the third preset length are all 100mm in length.

3. The shield tunneling machine cutterhead reducing device according to claim 1 or 2, wherein a single-blade hob and a double-blade hob are installed on the cutterhead main body.

4. A shield tunneling machine cutterhead reducing apparatus according to claim 3 wherein said single blade hobs are disposed at 180 ° spokes of said cutterhead body.