CN215170020U

CN215170020U - TBM cutter head slag feeding limiting device

Info

Publication number: CN215170020U
Application number: CN202121706740.9U
Authority: CN
Inventors: 刘飞香; 程永亮; 阳旭; 彭正阳; 暨智勇; 任勇; 李建芳
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-14
Anticipated expiration: 2031-07-26

Abstract

The utility model provides a TBM blade disc advances sediment limiting device, limiting device set up in swift current sediment chamber and lie in into the sediment mouth under, and limiting device includes coupling assembling and many and advances the sediment mouth shrouding, all sets up coupling assembling on the inner wall of swift current sediment chamber both sides, and the both ends of advancing the sediment mouth shrouding can be dismantled with two sets of coupling assembling respectively and be connected, many advance the sediment mouth shrouding set up side by side in coupling assembling is last to realize adjusting the cross-sectional size that allows the dregs to get into swift current sediment chamber. The limiting device of the utility model has simple structure, convenient installation and practical function, and when the limiting device is not installed in the slag hole closing plate, the rock breaking efficiency of the TBM cutter head in a good rock stratum is not influenced; when the slag inlet sealing plate is installed, the slag inlet of the cutter disc can be effectively limited, and a large amount of mud slag is prevented from flowing into the cutter disc; and the opening size of the slag inlet can be adjusted by changing the number of the slag inlet sealing plates according to the change of geological conditions, so that the slag inlet capacity of the cutter head is controllably limited, and the geological adaptability of the TBM cutter head is improved.

Description

TBM cutter head slag feeding limiting device

Technical Field

The utility model relates to a tunnel boring machine technical field, concretely relates to TBM blade disc advances sediment limiting device.

Background

With the development of science and technology, tunnel boring machines are increasingly paid more and more attention from various industries due to the great advantages of the tunnel boring machines in the aspects of economy, safety, environmental protection, boring efficiency and the like, and are widely applied to underground engineering construction such as railway tunnels, highway tunnels, urban subway tunnels, coal mine tunnels, diversion tunnels and the like. In particular, rock Tunnel Boring Machines (TBMs) are increasingly applied to railway tunnels, road tunnels and diversion tunnels in ultra-long distances.

The TBM construction method is generally suitable for rock geological tunnels with small water content and stable rock stratums, and because the TBM construction tunnels are generally long and complicated in geology, the TBM construction tunnels can encounter water-rich altered rock stratums or water-rich broken zone rock stratums inevitably in the construction process, and the stratum has poor stability and large water content, so that the conditions of water burst, mud burst and sand burst can occur. In the face of the situation, the TBM is difficult to exert the advantage of high tunneling efficiency and the construction progress is slow. Especially, the TBM blade disc because of it and host computer rear portion open the intercommunication completely, in case gush water and gush mud and gush sand and reach the certain degree, the blade disc can be gushed into from the blade disc scraper bowl slag inlet to the mud sediment, directly arrange the rear portion tunnel in through the inside cavity of girder in, bring inconvenience to the construction, serious person can take place to gush water even and gush mud and gush sand accident, cause serious threat for the safety of constructor and equipment.

In conclusion, a TBM cutter head slag feeding limiting device is urgently needed to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a TBM blade disc advances sediment limiting device aims at solving TBM worker's method and runs into rich water and change the stratum or rich water broken zone stratum and can take place to gush water and gush mud and gush sand accident in the work progress, causes the problem of serious threat for the safety of constructor and equipment, and concrete technical scheme is as follows:

the utility model provides a TBM blade disc advances sediment limiting device, limiting device sets up in swift current sediment chamber and is located into the sediment mouth under, limiting device includes coupling assembling and many and advances the sediment mouth shrouding, all set up coupling assembling on the inner wall of swift current sediment chamber both sides, the both ends of advancing the sediment mouth shrouding can be dismantled with two sets of coupling assembling respectively and be connected, many advance the sediment mouth shrouding set up side by side in coupling assembling is last to realize adjusting the cross-sectional size that allows the dregs to get into swift current sediment chamber.

Preferred among the above technical scheme, coupling assembling includes base and fastener, the base is fixed to be set up on the inner wall in swift current sediment chamber, the fastener is used for being fixed in on the base with advancing the slag notch shrouding.

Preferably, in the above technical solution, the number of the fasteners is multiple, and the number of the slag inlet seal plates corresponds to the number of the fasteners in the single group of connecting assemblies.

Preferred among the above technical scheme, coupling assembling still includes the protection shield, the protection shield can be dismantled and set up in the top of base.

Preferably, in the above technical scheme, the fastening member is a bolt, and the base, the protective plate and the slag inlet sealing plate are all provided with through holes allowing the fastening member to pass through.

Preferably, in the above technical solution, the limiting device is disposed at a front bucket position, a cone bucket position, or a back bucket position of the TBM cutter head.

Preferably, in the above technical scheme, the number of the slag inlet closing plates is determined according to the amount of gushing water, mud and sand.

Use the technical scheme of the utility model, following beneficial effect has:

the limiting device of the utility model has simple structure, convenient installation and practical function, and when the limiting device is not installed in the slag hole sealing plate, the original function of the scraper bucket is not influenced, and the rock breaking efficiency of the TBM cutter head in a good rock stratum is not influenced; when the slag inlet sealing plate is installed, the slag feeding of the cutter head can be effectively limited, and a large amount of mud slag is prevented from flowing into the cutter head.

In the TBM tunneling process, the opening size of the slag inlet can be adjusted by changing the number of the slag inlet sealing plates according to the change of geological conditions, the slag inlet capacity of the cutter head is controllably limited, and the geological adaptability of the TBM cutter head is improved.

When need not carry out the shutoff to advancing the cinder notch, can pass through the bolt fastening with the protection shield on the base, the protection shield can play fine guard action to the base, avoids the base to be destroyed by rock sediment striking wearing and tearing.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a front structural view of a TBM cutterhead;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2 (with the slag inlet closure plate installed);

fig. 4 is a sectional view of B-B in fig. 2 (only the left and right protection plates are mounted);

FIG. 5 is a side view of a TBM cutterhead;

the device comprises a slag inlet sealing plate 1, a left base 2, a right base 3, a left protective plate 4, a right protective plate 5, a right protective plate 6, a fastener 7, a TBM cutter head 8, a hob cutter 9, a bucket 901, a scraper knife assembly 902, a slag inlet 903 and a slag sliding cavity.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Example 1:

referring to fig. 1-3, a TBM cutter head slag feeding limiting device aims to solve the problem that a TBM construction method can cause water gushing, mud gushing and sand gushing accidents when encountering a water-rich altered rock stratum or a water-rich broken zone rock stratum in the construction process, and seriously threaten the safety of constructors and equipment. The front surface of the TBM cutter head 7 is provided with a plurality of hobbing cutters 8 and a plurality of buckets 9, and the hobbing cutters 8 are used for penetrating into a rock stratum under the action of thrust and rotation torque and extruding and crushing the rock; the bucket 9 comprises a scraper component 901, and under the rotation action of the TBM cutterhead 7, the scraper component 901 ploughs and collects rock slag, and the rock slag enters the slag sliding cavity 903 along the slag inlet 902 and is conveyed out of the cutterhead 7.

Limiting device sets up in swift current sediment chamber 903 and is located into cinder notch 902 under, limiting device includes coupling assembling and many cinder notch shrouding 1 of advancing, all set up coupling assembling on the inner wall of swift current sediment chamber 903 both sides, the both ends of advancing cinder notch shrouding 1 can be dismantled with two sets of coupling assembling respectively and be connected, many it sets up side by side to advance cinder notch shrouding 1 realize adjusting the cross-sectional size that allows the dregs to get into swift current sediment chamber 903 on the coupling assembling, carry out the shutoff to advancing cinder notch 902 promptly and realize adjusting the scraper bowl and actually scrape sediment length.

The connecting assembly comprises a base and a fastener 6, the base is fixedly arranged on the inner wall of the slag sliding cavity 903, and the fastener 6 is used for fixing the slag inlet sealing plate 1 on the base.

The number of the fasteners 6 is multiple, and the number of the slag inlet sealing plates 1 corresponds to the number of the fasteners 6 in the single-group connecting assembly.

The coupling assembling still includes the protection shield, the protection shield can be dismantled and set up in the top of base, lies in the base promptly and advances one side of sediment direction towards.

The fastener 6 is a bolt, and through holes allowing the fastener 6 to pass through are formed in the base, the protective plate and the slag inlet sealing plate 1.

Referring to fig. 2 and 3, the connecting assembly is divided into a left connecting assembly and a right connecting assembly in this embodiment, the base includes a left base 2 and a right base 3, and two ends of the slag inlet sealing plate 1 are respectively connected with the left base and the right base through fasteners 6. The protection shield includes left protection shield 4 and right protection shield 5, and is corresponding, left protection shield 4 sets up on left base 2, right protection shield 5 sets up on right base 3.

When the slag inlet 902 is not required to be blocked, the slag inlet 902 and the slag sliding cavity 903 are kept completely unobstructed, and the bucket 9 can efficiently shovel slag and slide slag. At this moment, can directly pass through bolt fastening with the protection shield on the base, left protection shield 4 and right protection shield 5 can play fine guard action to left base, right base, avoid left base 2 and right base 3 to be destroyed by rock sediment striking wearing and tearing, as shown in fig. 4.

When the slag inlet 902 is plugged, the left protection plate 4 and the right protection plate 5 can be directly detached, and then the slag inlet sealing plate is installed on the left base and the right base, as shown in fig. 3; besides, the slag inlet sealing plate 1 can be arranged on the left base and the right base, and the left protective plate 4 and the right protective plate 5 are arranged above the slag inlet sealing plate 1.

Preferably, the limiting device is provided at the front bucket position, the cone bucket position or the back bucket position of the TBM cutter head 7, and may be provided according to actual circumstances as shown in fig. 5.

The quantity of advancing slag notch shrouding 1 is confirmed according to the volume that gushes water and gush mud and gush sand, realizes adjusting the actual sediment length of scraping of advancing slag notch 902 according to operating condition to reach and advance the sediment to TBM blade disc 7 and carry out the purpose of controllable restriction, avoid the mud sediment to gush TBM blade disc 7 in a large number, reduce gush water and gush mud and gush sand occurence of failure, can seal completely when gushing water and gush mud and gush sand very seriously and advance the slag notch, only leave scraper bowl periphery opening.

Referring to fig. 2, the width of a single slag inlet sealing plate 1 is b; the length of the left base 2 and the right base 3 is a, and N bucket slag inlet seal plates 1 can be installed (that is, a is equal to N × b (N is the number of the installable slag inlet seal plates 1)); the bucket 9 has a scraping length L. When N slag inlet seal plates 1 are installed (N is less than or equal to N), the closed length of the bucket slag inlet 902 is "nxb", and the actual slag scraping length of the bucket is "L-nxb".

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a TBM blade disc advances sediment limiting device, a serial communication port, limiting device sets up in swift current sediment chamber (903) and is located into under slag notch (902), limiting device includes coupling assembling and many and advances slag notch shrouding (1), all set up coupling assembling on the inner wall of swift current sediment chamber (903) both sides, the both ends of advancing slag notch shrouding (1) can be dismantled with two sets of coupling assembling respectively and be connected, many advance slag notch shrouding (1) set up side by side in the last realization of coupling assembling is adjusted and is allowed the dregs to get into the cross-section size of swift current sediment chamber (903).

2. The TBM cutter head slag feeding limiting device is characterized in that the connecting assembly comprises a base and a fastener (6), the base is fixedly arranged on the inner wall of the slag chute cavity (903), and the fastener (6) is used for fixing the slag feeding hole sealing plate (1) on the base.

3. The TBM cutterhead slag inlet limiting arrangement of claim 2, wherein the number of fasteners (6) is multiple, and the number of inlet closure plates (1) corresponds to the number of fasteners (6) in a single set of attachment assemblies.

4. The TBM cutterhead slag inlet limiting device of claim 3, wherein the connection assembly further includes a protective plate, the protective plate being removably disposed over the base.

5. The TBM cutter head slag inlet limiting device is characterized in that the fasteners (6) are bolts, and through holes allowing the fasteners (6) to pass through are formed in the base, the protective plate and the slag inlet sealing plate (1).

6. The TBM cutterhead slag intake limiting device according to any one of claims 1-5, wherein the limiting device is located at a front bucket position, a cone bucket position or a back bucket position of the TBM cutterhead (7).

7. The TBM cutter head slag inlet limiting device according to any one of claims 1-5, characterized in that the number of the slag inlet closing plates (1) is determined according to the amount of gushing water, gushing mud and gushing sand.