CN211258611U

CN211258611U - Shield constructs quick-witted muddy water storehouse stirring rod and shield constructs machine of function is washed in area

Info

Publication number: CN211258611U
Application number: CN201921829198.9U
Authority: CN
Inventors: 张士龙; 张天举; 赵醒毅; 万坤; 郑立霞; 焦虹雨
Original assignee: Tianhe Mechanical Equipment Manufacturing Co Ltd
Current assignee: Tianhe Mechanical Equipment Manufacturing Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-14
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a shield constructs quick-witted muddy water storehouse stirring rod and shield structure machine of function is washed in area, the shield constructs the machine and includes blade disc, shield body, connects blade disc adapter between blade disc and shield body, installs the shield structure machine muddy water storehouse stirring rod on the median septum of shield body, and the shield constructs quick-witted muddy water storehouse stirring rod and includes barred body, adverse current board and valve module, the inside passageway that washes of UNICOM of seting up of barred body and body, the entrance point that washes the passageway is on the barred body, and its exit end is on the body, the adverse current board is located wash the inlet of passageway and serve, the valve module connect in wash the inlet of passageway and serve. The device has the stirring function of the stirring rod, can effectively wash the connecting part of the cutter head adapter and the cutter head, reduces the adhesion of muck and improves the tunneling efficiency.

Description

Shield constructs quick-witted muddy water storehouse stirring rod and shield constructs machine of function is washed in area

Technical Field

The utility model belongs to shield constructs quick-witted equipment field, in particular to shield constructs quick-witted muddy water storehouse stirring rod and shield and constructs machine of function is washed in area.

Background

According to actual construction practice, the connecting part of the shield cutter head adapter and the cutter head easily causes adhesion of muck, along with the gradual increase of the amount of the muck, the opening of a cutter head panel close to the shield cutter head can be gradually blocked to cause difficulty in discharging the muck cut by the cutter head, and the fluidity of the muck is reduced, so that the tunneling efficiency of the shield tunneling machine is reduced. The stirring rod of the shield tunneling machine is divided into an active stirring rod and a passive stirring rod, the active stirring rod or the passive stirring rod only has a stirring function, and for the positions of some dead angles at the back of the cutter head, especially the residue soil adhesion at the connecting position of the cutter head adapter and the cutter head cannot be processed through the stirring of the stirring rod, and the residue soil adhesion at the position can cause the residue soil blockage at the opening position of the cutter head panel particularly easily, so that the difficulty in slag discharge is caused.

Disclosure of Invention

The utility model aims at providing a shield constructs quick-witted muddy water storehouse stirring rod of function is washed in area.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a shield constructs quick-witted muddy water storehouse stirring rod of function is washed in area, its includes the barred body, the stirring rod still include fixed connection in body, adverse current board and valve module on the barred body is global, the inside washing passageway of UNICOM of having seted up of barred body and body, the entrance point of washing the passageway is on the barred body, and its exit end is on the body, the board locates against the current the inlet of washing the passageway is served, the valve module connect in wash on the inlet of passageway.

Preferably, the washing channel inside the tube body is an inclined channel, the washing channel inside the rod body is a transverse channel, and the inclined channel and the transverse channel are obliquely arranged along the axis.

Furthermore, the included angle formed by the axis of the inclined channel and the axis of the transverse channel is 40-60 degrees.

Preferably, the valve assembly comprises an adapter communicated with the inlet end of the flushing channel and fixedly connected with the inlet end of the flushing channel, a ball valve fixedly connected to the adapter, and a square conical plug screw connected to the ball valve.

Optimized, be equipped with the diameter on the terminal surface of the exit end of body and be greater than wash the mounting groove of passageway, the board includes clamp plate, rubber slab, backing plate, packing ring and clamp bolt in proper order against the current, the packing ring is located the tank bottom of mounting groove, the clamp plate is located the outside of mounting groove, clamp bolt passes clamp plate, rubber slab, backing plate, packing ring with body screw thread fixed connection, clamp plate central point puts and sets up big through-hole, the rubber slab has seted up cross-shaped chute towards on the terminal surface of backing plate, and the bottom disconnection of chute is but the laminating, and when water was injected, the chute bottom is opened and is formed the route, the little through-hole has been seted up on the backing plate, the little through-hole distribute in big through-hole is in projection area on the backing plate, also seted up on the backing plate with the coaxial and the.

The utility model also provides a shield constructs machine, it includes blade disc, the shield body, connects the blade disc adapter between blade disc and the shield body, install in shield constructs quick-witted muddy water storehouse stirring rod on the central baffle of the shield body, shield constructs quick-witted muddy water storehouse stirring rod and is above-mentioned arbitrary shield constructs quick-witted muddy water storehouse stirring rod.

Optimized, the blade disc adapter with the contained angle that the blade disc becomes is for gluing the angle, the exit end orientation of body glue the angle direction.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the device has the stirring function of a stirring rod, can effectively wash the connecting part of the cutter head adapter and the cutter head, reduce the adhesion of the muck and improve the tunneling efficiency, and can also inject different muck improving materials through the injection opening to meet different requirements, such as injecting a foaming agent or bentonite and effectively improve the fluidity of the muck; the injected polyurethane material can reduce the fluidity of the slag soil so as to prevent the gushing of the earth pressure shield in the slag discharging process and the like.

Drawings

Fig. 1 is a schematic structural diagram of the shield tunneling machine of the present invention;

FIG. 2 is a front view of the slurry chamber stirring rod of the shield tunneling machine of the present invention;

FIG. 3 is the utility model discloses the top view of shield constructs quick-witted muddy water storehouse stirring rod

Fig. 4 is a front view of the middle press plate of the present invention;

fig. 5 is a right side view of the middle press plate of the present invention;

FIG. 6 is a front view of the rubber sheet of the present invention;

FIG. 7 is a right side view of the rubber sheet of the present invention;

FIG. 8 is a front view of the cushion plate of the present invention;

fig. 9 is a right side view of the middle pad of the present invention;

fig. 10 is a front view of the washer-centering machine of the present invention;

fig. 11 is a right side view of the washer-centering machine of the present invention;

fig. 12 is a schematic structural view of the counter flow plate of the present invention;

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 1, the shield tunneling machine comprises a cutter head 1, a shield body 2, a cutter head adapter 3 connected between the cutter head 1 and the shield body 2, and a slurry bin stirring rod 5 of the shield tunneling machine installed on a central partition plate 4 of the shield body 2, wherein an included angle formed between the cutter head adapter 3 and the cutter head 1 is an adhesion angle 6.

As shown in fig. 2 and 3, the shield tunneling machine slurry stirring rod 5 includes a rod 7, a tube 8 fixedly connected to the circumferential surface of the rod 7, a reverse flow plate 9 and a valve assembly 10, a flushing passage communicated with the inside of the rod 7 and the tube 8 is provided, the inlet end of the flushing passage is on the rod 7, the outlet end of the flushing passage is on the tube 8, the outlet end of the tube 8 faces the adhering angle 6, the reverse flow plate 9 is arranged at the inlet end of the flushing passage, and the valve assembly 10 is connected to the inlet end of the flushing passage.

The washing channel inside the tube body 8 is an inclined channel 11, the washing channel inside the rod body 7 is a transverse channel 12, and the axes of the inclined channel 11 and the transverse channel 12 are arranged in an inclined mode. The included angle formed by the axes of the oblique channel 11 and the transverse channel 12 is 40-60 degrees, the best angle is 50 degrees, and the included angle is set according to the position of the part needing to be washed.

The valve assembly 10 comprises an adapter 13 communicating with and fixedly connected to the inlet end of the flushing channel, a ball valve 14 fixedly connected to the adapter 13, and a square-head conical plug screw 15 connected to the ball valve 14.

As shown in fig. 4-12, a mounting groove 16 with a diameter larger than that of the flushing channel is provided on the end surface of the outlet end of the pipe body 8, the counter flow plate 9 sequentially comprises a pressing plate 91, a rubber plate 92, a backing plate 93, a gasket 94 and a pressing bolt 95, the gasket 94 is located at the bottom of the mounting groove 16, the pressing plate 91 is located at the outermost side of the mounting groove 16, the pressing bolt 95 passes through the pressing plate 91, the rubber plate 92, the backing plate 93 and the gasket 94 to be fixedly connected with the pipe body 8 by screw threads, a large through hole 98 is provided at the center of the pressing plate 91, a cross-shaped inclined groove 96 is provided on the end surface of, when water is injected, the bottom of the chute 96 is opened to form a passage, the backing plate 93 is provided with small through holes 97, the small through holes 97 are distributed in the projection area of the large through hole 98 on the backing plate 93, and the gasket 94 is also provided with a large through hole 98 which is coaxial with the large through hole 98 and has the same diameter.

The utility model relates to a slurry cabin stirring rod of a shield machine, which is mainly applied to the slurry balance shield machine or a mixed shield machine with slurry balance function, and can also be partially applied to the earth pressure balance shield machine, if the earth pressure balance shield machine is in a non-full-cabin tunneling state, the flushing effect can be influenced when the cabin is full, the stirring rod only has the stirring function in the traditional design, the utility model designs a flushing channel on the basis of a rod body, the spraying direction of the flushing channel can be made into different angles according to the specific requirements, the injection port in the scheme is designed into 50 degrees (the angle is adjusted according to the specific position to be flushed), the angle can just flush the connecting part of a cutter head adapter and the cutter head, according to the actual construction practice, the part can easily cause the adhesion of earth sand, along with the gradual increase of the adhered amount, the cutter head opening near can be filled, the fluidity of the slag soil is reduced, so that the tunneling efficiency of the shield tunneling machine is reduced. Meanwhile, the filling opening can be filled with slag modifying agents such as foam, bentonite and the like according to the requirements of the construction method.

The effect of the different muck improvers is described as follows:

the injection port can be filled with water, foam, bentonite and other substances, and the injection port mainly plays a role in improving the soil body and increasing the mobility of the soil body in the soil cabin of the shield tunneling machine.

Requirement for soil improvement

(1) The soil in front of the cutter head needs to be improved in advance and continuously (the improvement is realized by designing a modifier sprayed from a residue soil improvement injection port on the cutter head)

(2) The soil body cut by the cutter head is improved to have good fluidity, the pressure balance between the soil body/muddy water in the soil bin and the soil body outside the cutter head can be established in time, and the stability of the soil body above the shield cut in the shield tunneling process is maintained;

(3) the mobility of the soil body is increased, the soil body cut by the cutter head and entering the soil bin can be discharged in time, the formation of mud cakes in the soil bin is reduced, and the skeleton arch effect of particles can not be formed.

Bentonite improvement method

Because bentonite has moisture absorption expansibility, hypotonicity, high adsorptivity and good from the closure performance, so when pouring into sodium bentonite solution into the soil cabin, the main effect that can play is: the mobility of the soil body in the soil cabin is increased, a mud film is formed on the tunnel face in the process that the cutter head rotates to cut the soil body, the wall protection effect is achieved, and the soil pressure balance in the soil cabin is kept, so that the soil body of the excavation face is prevented from collapsing, and the continuous and smooth tunneling is kept.

Improvement of foam agent

The common soil flattening shield tunneling machine is suitable for a viscous soil layer which has a small internal friction angle and a permeability coefficient of below 10-6m/s and is easy to flow. In a sand layer and a gravel layer with larger particle size, construction in the soil layer is difficult to keep the stability of an excavation surface due to large friction force and high water permeability. In order to solve the problem of plastic fluidity of sandy soil, foam can be injected into an excavated soil bin and fully stirred, and the components of the soil are changed to ensure the fluidity of the soil and reduce the water permeability of the soil, so that an excavated surface is kept stable; the friction between the cutter head and the soil body is reduced, the torque is reduced, and the adhesive force between the shell and the clay on the cutter head is reduced, so that the soil discharging mechanism can discharge soil.

The effect of adding water is as follows:

(1) cooling the temperature of the soil body in the soil bin; (for earth pressure balance shield)

(2) The mixed liquid of water and the lubricant has the function of reducing friction force and reducing the torque of the cutter head; (for earth pressure balance shield)

(3) Under the stirring of the stirring rod at the rear of the cutter head, the mobility of soil is increased, which is beneficial to smooth unearthing and reduces the abrasion of pebbles to the screw machine and the blades. (for earth pressure balance shield)

(4) The adhesion of sand on the back of the cutter head is reduced. (slurry balance shield and earth pressure balance shield)

The method adopts the water adding mode with gas (utilizing the air pressure to improve the water outlet pressure) to enhance the scouring action, so that a small amount of sticky particles can not be adhered to the back of the cutter head, and after the cut soil body enters the soil bin, the mobility of the soil body is enhanced due to the lubricating action of bubbles and the pressure action of the gas, and the total amount of the added water is reduced.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a shield constructs quick-witted muddy water storehouse stirring rod of function is washed in area, its includes the barred body, its characterized in that: the stirring rod further comprises a pipe body fixedly connected to the circumferential surface of the rod body, a counter flow plate and a valve assembly, a communicated flushing channel is formed in the rod body and the pipe body, the inlet end of the flushing channel is arranged on the rod body, the outlet end of the flushing channel is arranged on the pipe body, the counter flow plate is arranged at the inlet end of the flushing channel, and the valve assembly is connected to the inlet end of the flushing channel.

2. The shield tunneling machine muddy water bin stirring rod with the flushing function as claimed in claim 1, characterized in that: the washing channel in the tube body is an inclined channel, the washing channel in the rod body is a transverse channel, and the inclined channel and the transverse channel are obliquely arranged along the axis.

3. The shield tunneling machine muddy water bin stirring rod with the flushing function as claimed in claim 2, wherein: the included angle formed by the axes of the oblique channel and the transverse channel is 40-60 degrees.

4. The shield tunneling machine muddy water bin stirring rod with the flushing function as claimed in claim 1, characterized in that: the valve module includes with wash entrance point looks UNICOM of passageway and looks fixed connection's adapter, fixed connection in ball valve on the adapter and connect in square head toper plug screw on the ball valve.

5. The shield tunneling machine muddy water bin stirring rod with the flushing function as claimed in claim 1, characterized in that: be equipped with the diameter on the terminal surface of the exit end of body and be greater than wash the mounting groove of passageway, the board includes clamp plate, rubber slab, backing plate, packing ring and clamp bolt in proper order against the current, the packing ring is located the tank bottom of mounting groove, the clamp plate is located the outside of mounting groove, clamp bolt passes clamp plate, rubber slab, backing plate, packing ring with body thread fixed connection, clamp plate central point puts and sets up big through-hole, the rubber slab has seted up cross form chute on the terminal surface of backing plate, and the bottom disconnection of chute is but the laminating, and when water was injected, the formation route is opened to the chute bottom, seted up little through-hole on the backing plate, little through-hole distribute in big through-hole is in projection region on the backing plate, also seted up on the backing plate with the coaxial and the same big through-hole of big.

6. The utility model provides a shield constructs machine, its includes blade disc, shield body, connects blade disc adapter between blade disc and shield body, install in shield constructs quick-witted muddy water storehouse stirring rod of shield on the central partition plate of shield body, its characterized in that: the slurry cabin stirring rod of the shield tunneling machine is the slurry cabin stirring rod of the shield tunneling machine according to any one of claims 1 to 5.

7. The shield machine of claim 6, wherein: the blade disc adapter with the contained angle that the blade disc becomes is the adhesion angle, the exit end orientation of body the adhesion angle direction.