CN202531188U - Protection block for cutter of cutter head of shield machine - Google Patents
Protection block for cutter of cutter head of shield machine Download PDFInfo
- Publication number
- CN202531188U CN202531188U CN2012201733010U CN201220173301U CN202531188U CN 202531188 U CN202531188 U CN 202531188U CN 2012201733010 U CN2012201733010 U CN 2012201733010U CN 201220173301 U CN201220173301 U CN 201220173301U CN 202531188 U CN202531188 U CN 202531188U
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- CN
- China
- Prior art keywords
- cutter
- protection block
- shield machine
- protection piece
- cutter head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a protection block for a cutter of a cutter head of a shield machine. The protection block is arranged on the two sides of an impact surface of the cutter which is arranged on the cutter head; the top of the protection block has an inclined surface structure; embedded holes are formed in the top surface and the side surfaces of the protection block; and carburizing holes are formed in the side surfaces of the protection block. The protection block for the cutter of the cutter head of the shield machine has the advantages that the protection block is arranged and provided with an inclined surface structure, holes for embedding a hard alloy and the carburizing holes are formed in the protection block, and the hard alloy holes are formed in the protection block and the hard alloy is arranged in the holes, so that the rigidity of the protection block can be improved, and the protection block is abrasion resistant and impact resistant; the carburizing holes are formed in the side surfaces of the protection block, so that the protection block can carburize smoothly in the process of machining, and the strength of the protection block is enhanced; when the shield machine tunnels underground, the cutter on the cutter head can be protected by the protection block, the abrasion of a cutter material can be lightened effectively, and the mechanical impact of large-size boulders and pebbles can be absorbed effectively; and therefore, the protection block becomes a protection shield for the cutter of the cutter head of the shield machine.
Description
Technical field
The utility model relates to a kind of shield machine, is specifically related to a kind of cutter head of shield machine cutter protection piece.
Background technology
Shield method is a kind of important, the advanced job practices of carrying out constructing tunnel at present.Because shield-tunneling construction is different from traditional worker's methods such as tunneling, open cut, shallow buried covered excavation, it mainly relies on this carrier of Suporting structure, is able to carry out safely, efficiently constructing tunnel.But shield-tunneling construction equipment has high input, the performance decision construction key technology of equipment, and plant maintenance is the key of shield-tunneling construction in therefore rational shield structure type selecting and the work progress.For the shield-tunneling construction of sand-pebble layer, consider stabilizing measures emphatically to the spoils layer, generally adopt closure shield structure; But in the process of shield-tunneling construction; Construct in the stratum that existing cutter head of shield machine is high at super-size erratic boulder, cobble content, hardness is big, cutter can receive very big impact, and cutter distortion is big, quick abrasion; Often need to change cutter, even can't construct.Therefore need repair cutterhead timely, optimize boring parameter, so how to carry out the cutterhead reparation and protection is a technical barrier of needing solution badly.
The utility model content
The purpose of the utility model is to propose a kind of cutter head of shield machine cutter protection piece; Construct to solve in the stratum that existing cutter head of shield machine is high at super-size erratic boulder, cobble content, hardness is big; Cutter can receive very big impact; Cutter distortion is big, quick abrasion, often needs to change the problem of cutter.
For reaching this purpose, the utility model adopts following technical scheme:
A kind of cutter head of shield machine cutter protection piece, said protection piece are installed in the be hit both sides of face of cutter on the cutterhead, and the top of protection piece is a ramp structure, and embedded hole is all opened in end face and side, and the carburizing hole is opened in the side.
Especially, the ramp structure at the top of protection piece is the prismatic inclined-plane, and ramp structure is joined by three slant edge faces and forms.
Further, said embedded hole is a plurality of, and the diameter of embedded hole is between Φ 17～Φ 20mm.
Especially, said carburizing hole is a plurality of, and the diameter in carburizing hole is between Φ 5～Φ 9mm.
Preferably, said embedded hole is embedded in carbide alloy.
Preferably, said protection piece adopts the big steel of hardness to be made.
The beneficial effect of the utility model is: owing to be provided with the protection piece, the protection piece is provided with ramp structure, and in the protection piece, is provided with hole and the carburizing hole that embeds carbide alloy; On the protection piece, the carbide alloy hole is set and the rigidity that carbide alloy can improve the protection piece is set in the hole; Make it wear-resisting, shock-resistant, be provided with the carburizing hole in the side, can make the carburizing smoothly in the process of processing of protection piece; Strengthen the intensity of protection piece itself; In the underground driving of shield machine, the protection piece can be protected the cutter on the cutterhead, effectively slows down the wearing and tearing of cutter material; And can effectively absorb the mechanical shock of big particle diameter erratic boulder, cobble, thereby become the protection shield of cutter head of shield machine cutter.
Description of drawings
A kind of cutter head of shield machine cutter protection piece side direction structural representation that Fig. 1 the utility model specific embodiment 1 provides;
The front view of a kind of cutter head of shield machine cutter protection piece that Fig. 2 the utility model specific embodiment 1 provides;
The longitudinal sectional view of a kind of cutter head of shield machine cutter protection piece that Fig. 3 the utility model specific embodiment 1 provides.
Among the figure:
1, protection block body; 2, carburizing hole; 3, embedded hole.
The specific embodiment
Further specify the technical scheme of the utility model below in conjunction with accompanying drawing and through the specific embodiment; Cutter is a very important ingredient of shield machine; To cutter ground choose reasonable, use, maintenance and replacing; Directly quality, progress and the engineering cost of decision shield driving engineering, thus the shield machine cutter abrasion condition is analyzed, to cutter carry out reasonable disposition, driving is particularly important smoothly for the shield structure in good time replacing.At present, construct in the stratum that existing cutter head of shield machine is high at super-size erratic boulder, cobble content, hardness is big, cutter can receive very big impact; Cutter distortion is big, quick abrasion, often needs to change cutter, has greatly hindered the smooth driving of shield machine; For solving this technical barrier, to shown in Figure 3, the protection piece is installed in the be hit both sides of face of the cutter on cutterhead like Fig. 1; The top of protection piece is a ramp structure; Especially, the ramp structure at the top of protection piece is the prismatic inclined-plane, and ramp structure is joined by three slant edge faces and forms.
Embedded hole is all opened in end face and side, and embedded hole is embedded in carbide alloy, and embedded hole is a plurality of, and the diameter of embedded hole is between Φ 17～Φ 20mm.The carburizing hole is opened in the side, and convenient protection piece carries out Carburization Treatment in the process of processing.
Because the protection piece is positioned on the cutterhead, directly contacts with sandstone, under cyclic loading, shock loading, very big contact stress and heavy wear condition, works, so must make surperficial hard and wear-resisting, the Qiang Erren that protects piece, have high fatigue limit.In order to satisfy such functional performance requirement; Can adopt carbon containing 0.1%～0.25% carbon steel or low alloy steel; After carburizing and quenching, lonneal; Just can obtain high-carbon and low-carbon (LC) tissue respectively, thereby it is surperficial hard and wear-resisting to satisfy the protection piece, the requirement of the fatigue limit that core is strong and tough He high at the top layer and the core of protection piece.Therefore, the carburizing hole is exactly to carry out carburizing for ease to process and be provided with.The carburizing hole is arranged on the side of protection piece, and is a plurality of, and the diameter in carburizing hole is between Φ 5～Φ 9mm.
Preferably, said protection piece adopts the big steel of hardness to be made.
Above embodiment has just set forth the basic principle and the characteristic of the utility model; The utility model is not limited by the foregoing description; Under the prerequisite that does not break away from the utility model spirit and scope; The utility model also has various variations and change, and these variations and change all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (6)
1. cutter head of shield machine cutter protection piece is characterized in that: said protection piece is installed in the be hit both sides of face of cutter on the cutterhead, and the top of protection piece is a ramp structure, and embedded hole is all opened in end face and side, and the carburizing hole is opened in the side.
2. a kind of cutter head of shield machine cutter protection piece according to claim 1 is characterized in that: the ramp structure at the top of protection piece is the prismatic inclined-plane, and ramp structure is joined by three slant edge faces and forms.
3. a kind of cutter head of shield machine cutter protection piece according to claim 1, it is characterized in that: said embedded hole is a plurality of, the diameter of embedded hole is between Φ 17～Φ 20mm.
4. a kind of cutter head of shield machine cutter protection piece according to claim 1, it is characterized in that: said carburizing hole is a plurality of, the diameter in said carburizing hole is between Φ 5～Φ 9mm.
5. a kind of cutter head of shield machine cutter protection piece according to claim 1, it is characterized in that: said embedded hole is embedded in carbide alloy.
6. a kind of cutter head of shield machine cutter protection piece according to claim 1 is characterized in that: said protection piece adopts the big steel of hardness to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201733010U CN202531188U (en) | 2012-04-20 | 2012-04-20 | Protection block for cutter of cutter head of shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201733010U CN202531188U (en) | 2012-04-20 | 2012-04-20 | Protection block for cutter of cutter head of shield machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531188U true CN202531188U (en) | 2012-11-14 |
Family
ID=47132378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201733010U Withdrawn - After Issue CN202531188U (en) | 2012-04-20 | 2012-04-20 | Protection block for cutter of cutter head of shield machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531188U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441468A (en) * | 2018-09-29 | 2019-03-08 | 华东交通大学 | A kind of impact of shield tunneling face loosens and crushing device and its working method |
-
2012
- 2012-04-20 CN CN2012201733010U patent/CN202531188U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441468A (en) * | 2018-09-29 | 2019-03-08 | 华东交通大学 | A kind of impact of shield tunneling face loosens and crushing device and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121114 Effective date of abandoning: 20130416 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |