CN105645074A - Efficient earth pressure balance shield belt conveyor mud-scraping system and method - Google Patents

Abstract

The invention discloses an efficient earth pressure balance shield belt conveyor mud-scraping system and method. The scheme is realized based on a base assembly, a connecting rod, a tool rest, a scraper blade and a buffer adjuster, wherein the base assembly is arranged corresponding to a conveying belt of the belt conveyor; one end of the connecting rod is connected with the base assembly in a hinge joint mode, while the other end supports and connects with the tool rest; the tool rest is arranged at one end of the connecting rod; the scraper blade is arranged on the tool rest and fits the conveying belt; the buffer adjuster is in drive connection with the connecting rod to adjust the fitting relationship of the scraper blade and the conveying belt. According to the belt conveyor mud-scraping scheme, in various types of clay stratums and complicate and changeable stratums, the problems caused during the conveying of the muck, such as belt bonding, sludge dropping, belt slipping and like, are effectively solved; the safety hidden danger is further reduced and the work efficiency is improved; meanwhile, contamination of the construction equipment and the work environment is reduced and the construction cost is saved.

Description

Mud system and method scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor

Technical field

The present invention relates to a kind of tunnel construction technology, be specifically related to the balancing earth-pressure shielding machine in shield tunnel construction process.

Background technology

In metro shield tunneling process, balancing earth-pressure shielding machine is utilized to excavate. When utilizing shield operation to excavate, the dregs excavated out is transported in the slag-soil truck in electromobile marshalling by belt conveyor, outside again through slag-soil truck transport to hole.

But when belt long distance delivery dregs, belt very easily bonds dregs, cause that belt slag-off phenomenon is serious, pollute shield machine electrical equipment and tunnel duct piece, bring very big inconvenience to prune job, add the workload of secondary prune job.

Scrape mud system accordingly for this reason, it may be necessary to add on earth pressure balanced shield, EPBS belt conveyor, remove the dregs of adhesion in belt surface with this.

But existing belt feeder cleaning shoe assembly scheme is in actual application, particularly when clay stratum tunnels, dregs bonding belt, strike off clean, body refuse drops, the phenomenon of belt creep is especially prominent, cause that shield machine tunneling construction is discontinuous, support pressure fluctuates, and affects bigger on construction safety and construction speed.

Summary of the invention

There is dregs bonding belt for existing earth pressure balanced shield, EPBS belt conveyor, strike off the problems such as unclean, body refuse drops, belt creep, present invention is primarily targeted at and provide the earth pressure balanced shield, EPBS belt conveyor of a kind of optimization to scrape mud system, this system can strike off the earth of conveyor belt surface effectively, solution dregs drops problem. Scrape at this on basis of mud system, another object of the present invention is to provide one to scrape mud method efficiently.

In order to achieve the above object, the adopting the following technical scheme that of the present invention:

Scheme 1: provide a kind of efficient earth pressure balanced shield, EPBS belt conveyor to scrape mud system, described in scrape mud system and include:

Base assembly, described base assembly is arranged relative to the conveyer belt in belt conveyor;

Two connecting rods being arranged symmetrically with, one end of described connecting rod and base assembly are articulated and connected, and the other end supports and connects knife rest;

Knife rest, described knife rest is placed in one end of connecting rod;

Wing, described wing is placed on knife rest, and coordinates with conveyer belt;

Buffer adjuster, described buffer adjuster drives and connects connecting rod, to regulate the matching relationship between wing and conveyer belt.

Preferably, described in scrape mud system also include water injector, the hole for water spraying on described water injector is positioned opposite with wing.

Preferably, described hole for water spraying is a plurality of, is divided into two rows and in 45 �� of angle distributions.

Preferably, one end of described connecting rod is connected with knife rest by adjustable connecting device.

Preferably, the other end of described connecting rod is connected with base assembly by the pin joint structure of self-lubricating.

Preferably, the pin joint structure of described self-lubricating includes the bearing and the connecting pin that cooperate.

Preferably, the pin joint structure of described self-lubricating includes the guide and the connecting pin that cooperate.

Preferably, the inwall of described guide is with oil storage tank.

Preferably, the middle of described connecting pin processes one oilhole equipped grease nipple.

Preferably, the both sides of described guide are provided with O RunddichtringO.

Preferably, described two connecting rods, it is oppositely arranged, adjusts the knife rest being attached thereto individually or simultaneously.

Preferably, described wing adopts MC901 nylon wearing plate to make.

Preferably, the edge of a knife gradient of described wing 25 ��-35 ��.

Preferably, described knife rest is 90 �� of arc type blade holder or 75 �� of linear type knife rests or 90 �� of linear type knife rests.

Preferably, described buffer adjuster includes adjusting screw rod and tension spring, described adjusting screw rod is connected with connecting rod free end by tension spring, described adjusting screw rod is used for adjusting between wing and belt gap and conveyer belt elasticity, described tension spring immovable support, buffer compensation and be automatically adjusted the pressure contact of wing and conveyer belt.

Scheme 2: scrape mud system based on above-mentioned, it is provided that mud method scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor, described in scrape mud method when starting,

First, lubrication conveyor belt surface is cleaned at driving front opening hole for water spraying;

Then, start main driving cylinder and make conveyer belt enter normal operation, in use suitably adjust hydraulic pressure according to dregs kinematic viscosity size, it is ensured that enough hydraulic pressure cleans and lubrication wing;

Finally, after driving terminating, fully opening sparge pipe starting conveyer belt cleaning scraper blade, belt working surface and carrying roller until cleaning up, cleaned rear belt no-load running a few.

The belt conveyor constituted accordingly is scraped mud scheme and can effectively solve the problem that in all kinds of cohesive soil stratum and stratum complicated and changeable, dregs produce in course of conveying bonding belt, body refuse drop, the problem such as belt creep. Stable shield machine support pressure, control are unearthed and are measured by the seriality of dregs conveying, reduce surface subsidence and provide a favorable guarantee, decrease potential safety hazard, improve work efficiency. Decrease construction equipment simultaneously and working environment is contaminated, save construction cost.

Accompanying drawing explanation

The present invention is further illustrated below in conjunction with the drawings and specific embodiments.

Fig. 1 is the systematic schematic diagram that in this example, mud system scraped by earth pressure balanced shield, EPBS belt conveyor;

Fig. 2 is the structural representation of base assembly in this example;

Fig. 3 is the structural representation of connecting rod in this example;

Fig. 4 is the structural representation of connecting pin in this example;

Fig. 5 is the structural representation of 90 �� of arc type blade holder in this example;

Fig. 6 is the structural representation of 75 �� of linear type knife rests in this example;

Fig. 7 is the structural representation of 90 �� of linear type knife rests in this example;

Fig. 8 is the structural representation of this example intermediate slide seat;

Fig. 9 is the structural representation of wing in this example;

Figure 10 is the structural representation of adjusting screw rod in this example;

Figure 11 is the structural representation of tension spring in this example;

Figure 12 is the structural representation of sparge pipe in this example.

Detailed description of the invention

For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with instantiation and diagram, the present invention is expanded on further.

This example is for this programme a metro shield tunneling engineering.

For this Shield-bored tunnels engineering, its construction area belongs to island and fills out Haiti looks, complicated geology is changeable, and this interval is mainly passed through silty clay, cohesive soil, remained chiltern cohesive soil, completely weathered granite stratum, and this brings very big impact to shield-tunneling construction.

When utilizing balancing earth-pressure shielding machine to tunnel at clay stratum, belt conveyor scrape mud system there is comparatively serious dregs bonding belt, strike off clean, body refuse drops, the phenomenon of belt creep. Owing to dregs viscosity is big, even if being still bonded in belt conveyor after being improved by foam, driving cylinder and carrying roller surface, it is difficult to strike off and clean up, the phenomenons such as carrying roller Fast Wearing, belt creep, cylinder eccentric wear and dregs drop occur. The section of jurisdiction causing construction equipment and working environment and installation is polluted in various degree, affects workmen's safety work, and when causing tunneling, other attached work can not carry out simultaneously, thus work seriality can not be realized affect construction speed.

For this phenomenon, early stage scrapes the height of belt tightness degree and corresponding wing in mud system by adjusting belt conveyor, alleviates the problems referred to above. If conveyer belt is adjusted tension, sensor alarm and the problem of damage belt vulcanized joint and very easily worn scraper blade sheet often occur.

For this, this example is designed efficient earth pressure balanced shield, EPBS belt conveyor and scrapes mud system, thoroughly to solve the problems referred to above.

Referring to Fig. 1, it show this earth pressure balanced shield, EPBS belt conveyor and scrapes the schematic diagram of mud system. As seen from the figure, this is scraped mud system 100 and specifically includes that base assembly 101, at least one connecting rod 102, knife rest 103, wing 104 and buffer adjuster 105.

This base assembly 101 scrapes basic components in mud system 100 as whole, for carrying other building block. This this base assembly 101 entirety is arranged relative to the conveyer belt 200 in belt conveyor, is more particularly arranged on belt conveyor, and is positioned at the lower section of conveyer belt 200.

Connecting rod 102, as the whole connection conducting parts scraped in mud system 100, is used for connecting base assembly 101 and knife rest 103. One end of connecting rod 102 is connected for rotating with base assembly, and the other end is used for supporting and connecting knife rest, regulates, around base assembly rotation, the knife rest 103 being attached thereto by self.

Accordingly, this programme adopts two connecting rods 102, the setting that this two connecting rods 102 are opposing parallel, is connected with the two ends of base assembly 101 and knife rest 103 respectively. Wherein one end of a connecting rod 102 is connected with one end of knife rest 103 by adjustable connecting device, and the other end of this connecting rod 102 is by one end pin joint of the pin joint structure of self-lubricating with base assembly 101; One end of another root connecting rod 102 is connected with the other end of knife rest 103 by adjustable connecting device, and the other end of this connecting rod 102 is by the other end pin joint of the pin joint structure of self-lubricating with base assembly 101.It is formed from the two ends of knife rest 103 and supports and connect by the dual connecting rod structure thus constituted, and is effectively ensured the reliability of knife rest; Furthermore, two connecting rods 102 are all independently arranged, and two ends are all rotatably connected, therefore two connecting rods 102 can individually operate or be operated simultaneously, thus realizing adjusting individually or simultaneously height and/or the angle on the knife rest 103 being attached thereto and wing thereon 104 both sides, when can effectively meet curved tunnel section driving, the function of mud scraped by belt.

Additionally, in this programme, two connecting rods 102 are respectively through adjustable connecting device and knife rest 103, thus convenient regulate knife rest 103 and the link position of connecting rod 102, connection angle, thus realize cutter setting frame 103 upper blade sheet 104 height and and conveyer belt 200 between fit angle be adjusted. Thus, the native system being can adjust the orientation of wing 104 according to actual needs in real time in actually used process.

Knife rest 103, it is connected support by connecting rod 102, and is used for disposing corresponding wing 104. For the structure of knife rest 103, can adopting different designs according to practical situation: in this programme, knife rest 103 adopts following three kind design:

1.90 �� of arc type knife rests,

2.75 �� of linear type knife rests,

3.90 �� of linear type knife rests,

Thus adapt to different situations, select the knife rest of corresponding construction according to practical situation.

Wing 104, it is arranged on knife rest 103, and coordinates with conveyer belt 200, to strike off clay thereon.

Can determine according to the actual requirements for wing 104 structure, but the fitness good in order to ensure wing 104 and conveyer belt 200, to strike off clay thereon efficiently, the edge of a knife gradient of the wing 104 in this programme is designed as 25 ��-35 ��.

Furthermore, for wing 104, it must also possess the characteristics such as wear-resisting, high temperature resistant, ageing-resistant, should bear conveyer belt operation work surface and not damage belt vulcanized joint again with the frictional force that wing produces, also want to bear fricative high temperature simultaneously.

Accordingly, this programme adopts nylon sheet to prepare wing 104, and concrete selection MC-901 nylon sheet is processed into wing 104.

Further, the MC-901 nylon sheet in this programme, it adopts oil-containing nylon kollag in monomer cast nylon formula, has self lubricity, excellent abrasiveness, prominent wearability and pressure contact ability, it is adaptable to high-speed cruising, the movement parts that cannot lubricate

The wing 104 constituted accordingly has higher intensity, rigidity, toughness, vibration damping and the feature feature such as ageing-resistant, also has self-lubricating and good wearability simultaneously.

Buffer adjuster 105 in this programme, it drives and connects connecting rod 102 so that it is the upper wing 104 arranged contacts cooperation with conveyer belt 200, and is automatically adjusted the matching relationship between wing 104 and conveyer belt 200.

This buffer adjuster 105 is specifically equipped with connecting rod 102, this programme adopts two buffer adjuster 105, it is respectively relative to connecting rod 102 be disposed there above, and the one end being connected knife rest 103 with connecting rod 102 connects, thus position its position relative to conveyer belt 200 from the two ends of knife rest 103, and make its upper blade sheet 104 contact cooperation with conveyer belt 200. Thus while ensureing knife rest 103 steadiness, it is furthermore achieved that the individual buffer to two connecting rods 102 regulates. Knife rest 103 two ends disposing wing 104 are connected respectively due to two connecting rods 102, thus realize further being independently automatically adjusted from wing 104 two ends and contact matching relationship between wing 104 with conveyer belt 200, the fitness between real-time ensuring wing 104 and conveyer belt 200 concordance in wing 104 general direction so that wing 104 strikes off the attachment of conveyer belt work surface effectively.

Concrete, each buffer adjuster 105 includes adjusting screw rod 105a and tension spring 105b two parts. Wherein adjusting screw rod 105a fixes one end, and the other end is connected by tension spring 105b one end being connected knife rest 103 with connecting rod. Thus can adjust gap and conveyer belt elasticity between wing and belt by adjusting screw rod 105a, and be fixed knife rest 10 by tension spring 105b; In system operation, tension spring 105b carry out the pressure contact that Real time buffer compensates and is automatically adjusted between wing 104 and conveyer belt 200.

On this basis, this programme also further configures a water injector 108 (referring to Figure 12), this water injector coordinates with the wing 104 in system, for wing 104 is carried out, cools down, lubricates, strike off the effect of the clay on conveyer belt 200 improving wing 104, and extend the service life of wing 104.

Water injector, it connects high-pressure water, and on it and be provided with hole for water spraying, these hole for water sprayings towards wing 104, are specifically directed and contact cooperation place between wing 104 with conveyer belt 200.

In this programme, this water injector is specially a sparge pipe, this sparge pipe is relative to wing 104, and arrange along the bearing of trend of wing 104, one end connects high-pressure water, and the other end seals or connects (as long as ensureing there is enough hydraulic pressure in sparge pipe) such as other watering equipments; Offering some hole for water sprayings relative to the position of wing 104 on sparge pipe, these hole for water sprayings are divided into two rows and the distribution in 45 �� of angles, so that the water of ejection can cover and contact cooperation place between whole wing 104 and its with conveyer belt 200.

Scrape mud system schema for above-mentioned earth pressure balanced shield, EPBS belt conveyor, carry out further instruction below by way of an instantiation.

This example adopts Q235 steel plate, size: L=100cm, H=15cm, T=1cm, processing and fabricating tool rest bracket assembly 101.

Referring to Fig. 2, the generally square plate 101a of the base assembly 101 in this example, being symmetrically arranged with a pair bearing 101b at the two ends of square plate 101a, this bearing 101b is specially U-shaped simultaneously, in order to rotating with connecting rod 102 be connected.

The base assembly 101 of such structure, it is arranged on chassis crossbeam corresponding below conveyer belt, for fixed connecting rod 102 and blade holder 103 (both above-mentioned knife rest) (such as Fig. 3).

This example adopts Q235 steel plate, size: L=50cm, H=5cm, T=2cm, two connecting rods 102 of processing and fabricating, is used for supporting and connect knife rest 103, realize adjusting individually or simultaneously gap between wing and belt simultaneously.

Referring to Fig. 3, the connecting rod 102 in this example is specially a square pole, for connecting the bearing 101b in knife rest 103 and base assembly 101.

Wherein each connecting rod 102 is welded with adjustable adpting flange sheet for the one end connecting knife rest 103, as adjustable connecting device, is used for connecting knife rest 103, adjusts wing height with this and adjusts cartridge angles.

Connecting rod 102 other end offers corresponding pin-and-hole, is rotatably connected with the bearing 101b in base assembly 101 by the pin joint structure of corresponding self-lubricating.

Concrete, bearing or guide can be adopted between connecting rod 102 with a bearing 101b to coordinate with connecting pin composition pin joint structure to realize the pin joint of self-lubricating, lithium saponify lubricating oil must be filled before using and prevent muddy water, dust from entering damage bearing or guide.

1. according to bearing and connecting pin coordinated scheme, installing oscillating bearing, both sides installation back-up ring is fixing prevents play.

2. the scheme coordinated with connecting pin according to guide, installs an inwall with oil storage tank guide and twice O RunddichtringO in connecting rod 102 in corresponding pin-and-hole.

This guide can be copper sheathing or nylon jacket, its inwall processing oil storage tank, at both sides mounting O-shaped sealing ring during installation, also installs outside it that back-up ring is fixing prevents play simultaneously.

For connecting pin therein, this example adopts 40Cr round steel, processing and fabricating connecting pin, be used for being connected in propping up a bearing with guide, size: L=4.5cm,

Referring to Fig. 4, the connecting pin 106 in this example, generally one is cylindric, and one end is provided with fixed via 106a, and the other end is along its circumferentially disposed corresponding positive stop lug boss 106b; Processing one oilhole 106c, this oilhole 106c generally inverted L-shaped in connecting pin 106, import is screw thread mouth, is arranged on the end face of the other end simultaneously, and outlet is arranged on the side of connecting pin 106. The oilhole 106c so arranged, its equipped corresponding grease nipple, it is used for injecting lithium saponify lubrication, it is prevented that muddy water, dust enter and damage guide.

Dual connecting rod structure will be formed based on the above-mentioned plan of establishment, and be supported by this dual connecting rod and connect knife rest 103, will can adjust the angle of wing 104 height and blade holder 103, specific as follows:

1. connecting rod can adjust both sides wing height individually or simultaneously, it is ensured that the fitness between wing and conveyer belt work surface, effectively strikes off the attachment of conveyer belt work surface.

2. can adjust wing height by connecting rod double-row hole flange plate and adjust knife rest angle.

This example adopts Q235 steel plate processing and fabricating blade holder 103, is used for wing 104 is installed. This example provide three kinds of models to select to install according to geological condition.

Referring to Fig. 5, the structural representation of its 90 �� of arc type blade holder showing in this example to provide.

As seen from the figure, this blade holder vertical direction with respect to the horizontal plane generally 90 �� vertical, be arc type in the longitudinal direction; In this blade holder, distribution has some fixing holes. The 90 �� of arc type blade holder thus constituted are applicable to strike off large area bulk cohesive soil.

Referring to Fig. 6, the structural representation of its 75 �� of linear type knife rests showing in this example to provide.

As seen from the figure, this blade holder in the vertical direction for being divided into two sections, hypomere portion with respect to the horizontal plane overall 90 �� vertical, and upper end is extended obliquely by hypomere portion top entirety and constitutes, with respect to the horizontal plane overall in 75 ��; It addition, this blade holder is in the longitudinal direction for for a linear type; Furthermore, in this blade holder, distribution has some fixing holes. The 75 �� of linear type knife rests thus constituted are applicable to strike off various soft, hard plastic shape stickiness soil layer.

Referring to Fig. 7, the structural representation of its 90 �� of linear type knife rests showing in this example to provide.

As seen from the figure, this knife rest is a linear vertical structure generally, and on it, distribution has some fixing holes. The 90 �� of linear type knife rests thus constituted are applicable to opaque stickiness soil layer, remain chiltern cohesive soil.

For the blade holder 103 of above-mentioned three kinds of models, this example passes through corresponding carriage saddle 107, it is achieved being reliably connected between blade holder 103 and connecting rod 102.

Referring to Fig. 8, the generally long L-shaped of carriage saddle 107 in this example, it adopts zinc-plated equal angle iron processing and fabricating carriage saddle, and arranges some fixing hole 107a along bearing of trend, is used for installing fixing blade holder 103.

This example adopts MC901 nylon wearing plate, size: L=60cm, H=12cm, T=2cm, processing and fabricating wing 104.

Referring to Fig. 9, the wing 104 generally strip in this example, equidistant in their extension direction it is provided with some fixing hole 104a, and offers edge of a knife 104b at top, the gradient of this edge of a knife 104b is 30 ��. The wing 104 thus constituted by integral installation on blade holder 103, under the driving of connecting rod 102 and blade holder 103 so that edge of a knife 104b thereon coordinates with the work surface of conveyer belt 200, to strike off the attachment of conveyer belt work surface.

This example adopts 40Cr round steel processing and fabricating adjusting screw rod 105a, and coordinates tension spring 105b to constitute buffer adjuster.

Referring to Figure 10, one end of this adjusting screw rod 105a is provided with connecting hole, is used for connecting tension spring 105b, then is connected corresponding connecting rod 102 by tension spring 105b; The adjusting screw rod 105a other end carries out with corresponding nut screw connection spacing and realizes fixing. It is achieved in the connection to connecting rod 102 and location, regulated the action length of whole adjusting screw rod 105a by adjusting nut simultaneously, then the position relationship regulating connecting rod 102 relative to conveyer belt 200 is driven by adjusting screw rod 105a, it is achieved adjust gap and conveyer belt elasticity between wing and belt.

Referring to Figure 11, the tension spring 105b in this example, adopt 65Mn tension spring, for connecting the connecting rod 102 of correspondence, it is achieved immovable support, buffer compensation and be automatically adjusted the pressure contact of wing and conveyer belt.

Operationally, when wing contact runs conveyer belt vulcanized joint, thickness of belt is gradually increased the buffer adjuster thus constituted, and blade holder moves gradually downward under the pressure of belt, and tension spring 105b extends; When crossing vulcanized joint, thickness of belt is gradually reduced, and blade holder moves up gradually under the pulling force of tension spring 105b, and spring shortens reset.

It addition, this example adopts DN20 galvanized pipe make the sparge pipe 108 as water injector.

Referring to Figure 12, the body of this sparge pipe 108 is made by DN20 galvanized pipe, and on it, processing and fabricating two arranges hole for water spraying 108a, and the diameter of this hole for water spraying is 3mm, and nozzle angle is 45 ��.

The sparge pipe thus constituted is arranged on distance wing 30cm position, quotes outer circulation press water and conveyer belt is carried out, lubricates, cools down.

Mud system scraped by the earth pressure balanced shield, EPBS belt conveyor constituted accordingly, has a characteristic that relative to existing mud system of scraping

(1) keep belt conveyor to have stable rotating speed and good pressure contact, wing gap can be automatically adjusted and guarantee the attachment scraped clean of conveyer belt work surface.

(2) wing intensity height, self-lubricating, wear-resisting and good resilience.

(3) bindiny mechanism has damping, buffering, compensating action, is automatically adjusted wing gap, and protection conveyer belt and heat cure joint are not frayed.

(4) connecting rod and a bearing, mounting and adjusting is convenient.

(5) installation of wing, replacing fast and easy.

Scraping mud system by this earth pressure balanced shield, EPBS belt conveyor, that belt conveyor is scraped the running of mud is as follows:

First, set according to above-mentioned scheme before driving and scrape mud system, when mud system is scraped in setting, select corresponding knife rest according to geological condition.

Then, before belt conveyor starts, first open sparge pipe and clean grease belt surface.

Then, starting main driving cylinder in belt conveyor makes belt conveyor enter normal operation, scrape simultaneously and mud system utilizes adjusting screw rod tension tension spring immovable support make wing contact with the lower face pressure of backhaul conveyer belt, realized immovable support, buffer compensation by tension spring simultaneously and be automatically adjusted the pressure contact of wing and conveyer belt; When conveyer belt operates, transmission drum is followed conveyer belt and is rotated thus preventing the foreign material such as dregs muddy water from dropping the attachment scraped clean of work surface under backhaul conveyer belt, it is achieved work synchronicity carries out;

Additionally in use suitably adjust hydraulic pressure according to dregs kinematic viscosity size, it is ensured that enough hydraulic pressure cleans and lubrication wing.

Finally, after driving terminating, fully opening sparge pipe starting conveyer belt cleaning scraper blade, belt working surface and carrying roller until cleaning up, cleaned rear belt no-load running a few.

Relative to prior art: needing more than ten operating personnel to carry out labor cleaning after having tunneled and sweep Suporting structure, electromobile and some auxiliary devices, the section of jurisdiction clearing up installation needs to consume the phenomenon of a large amount of hydroelectric resources every time; This programme water, power consumption significantly reduce, and cleaning amount is little automatically simultaneously, and conveyer belt scavenging period was shortened to three minutes by original 30 minutes and completes; Not only solve environmental health and the pollution problem of job site and periphery, and saved water, electricity, human resources, reduce cost consumption, improve working efficiency.

The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described. Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention. Claimed scope is defined by appending claims and equivalent thereof.

Claims (16)

1. mud system scraped by an efficient earth pressure balanced shield, EPBS belt conveyor, it is characterised in that described in scrape mud system and include:

Base assembly, described base assembly is arranged relative to the belt conveyor in belt conveyor;

Two connecting rods being arranged symmetrically with, one end of described connecting rod and base assembly are articulated and connected, and the other end supports and connects knife rest;

Knife rest, described knife rest is placed in one end of connecting rod;

Wing, described wing is placed on knife rest, and coordinates with conveyer belt;

Buffer adjuster, described buffer adjuster drives and connects connecting rod, to regulate the matching relationship between wing and conveyer belt.

2. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 1, it is characterised in that described in scrape mud system also include water injector, the hole for water spraying on described water injector is positioned opposite with wing.

3. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 2, it is characterised in that described hole for water spraying is a plurality of, is divided into two rows and in 45 �� of angle distributions.

4. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 1, it is characterised in that described two connecting rods are oppositely arranged, and adjust the knife rest being attached thereto individually or simultaneously.

5. mud system scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor according to claim 1 or 4, it is characterised in that one end of described connecting rod is connected with knife rest by adjustable connecting device.

6. mud system scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor according to claim 1 or 4, it is characterised in that the other end of described connecting rod is connected with base assembly by the pin joint structure of self-lubricating.

7. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 6, it is characterised in that the pin joint structure of described self-lubricating includes the bearing and the connecting pin that cooperate.

8. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 6, it is characterised in that the pin joint structure of described self-lubricating includes the guide and the connecting pin that cooperate.

9. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 8, it is characterised in that the inwall of described guide is with oil storage tank.

10. mud system scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor according to claim 7 or 8, it is characterised in that one oilhole of processing equipped grease nipple in the middle of described connecting pin.

11. mud system scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor according to claim 8 or claim 9, it is characterised in that the both sides of described guide are provided with O RunddichtringO.

12. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 1, it is characterised in that described wing adopts MC901 nylon wearing plate to make.

13. mud system scraped by a kind of efficient earth pressure balanced shield, EPBS belt conveyor according to claim 1 or 12, it is characterised in that the edge of a knife gradient of described wing 25 ��-35 ��.

14. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 1, it is characterised in that described knife rest is 90 �� of arc type blade holder or 75 �� of linear type knife rests or 90 �� of linear type knife rests.

15. mud system scraped by the efficient earth pressure balanced shield, EPBS belt conveyor of one according to claim 1, it is characterized in that, described buffer adjuster includes adjusting screw rod and tension spring, described adjusting screw rod is connected with connecting rod free end by tension spring, described adjusting screw rod is used for adjusting between wing and belt gap and conveyer belt elasticity, described tension spring immovable support, buffer compensation and be automatically adjusted the pressure contact of wing and conveyer belt.

16. mud method scraped by an efficient earth pressure balanced shield, EPBS belt conveyor, it is characterised in that described in scrape mud method when starting,

First, lubrication conveyor belt surface is cleaned at driving front opening hole for water spraying;

Then, start main driving cylinder and make conveyer belt enter normal operation, in use suitably adjust hydraulic pressure according to dregs kinematic viscosity size, it is ensured that enough hydraulic pressure cleans and lubrication wing;

Finally, after driving terminating, fully opening sparge pipe starting conveyer belt cleaning scraper blade, belt working surface and carrying roller until cleaning up, cleaned rear belt no-load running a few.