CN109989764A - Normal pressure tool changing cutter head with freezing function - Google Patents
Normal pressure tool changing cutter head with freezing function Download PDFInfo
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- CN109989764A CN109989764A CN201910423963.5A CN201910423963A CN109989764A CN 109989764 A CN109989764 A CN 109989764A CN 201910423963 A CN201910423963 A CN 201910423963A CN 109989764 A CN109989764 A CN 109989764A
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- Prior art keywords
- tool changing
- pressure tool
- normal pressure
- freezing
- pipeline
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- 238000007710 freezing Methods 0.000 title claims abstract description 98
- 230000008014 freezing Effects 0.000 title claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000008676 import Effects 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a normal-pressure tool changing cutter disc with a freezing function, which comprises a circular cutter disc, wherein the circular cutter disc comprises a plurality of normal-pressure tool changing radial arms and a plurality of auxiliary beams, the plurality of normal-pressure tool changing radial arms are respectively connected through the plurality of auxiliary beams, and a plurality of normal-pressure tool changing cutters are arranged on the normal-pressure tool changing radial arms; a freezing pipeline is arranged on the side face of the normal-pressure tool changing spoke arm, the position of the inner panel, the outer surface of the panel or the inner part of the panel, the freezing pipeline is provided with a first inlet and a first outlet for injecting or discharging low-temperature cooling liquid, a heat insulation pipeline is arranged between the freezing pipeline and the cutter flange, and the heat insulation pipeline is provided with a second inlet and a second outlet for injecting or discharging heat insulation liquid. By applying the normal-pressure tool changing cutter head with the freezing function, not only can the normal-pressure tool changing cutter head be adopted for frequently changing the cutter, but also the working face can be frozen by arranging the freezing pipeline, and the operation of excavating a bin can be ensured under special conditions. The construction efficiency and the equipment safety are improved, and the construction cost is reduced.
Description
Technical field
The present invention relates to Boring Machine Technique fields, more specifically to a kind of normal pressure tool changing knife with freezing function
Disk.
Background technique
Development machine is that a kind of tunnel piercing special engineering is mechanical, has and excavates the function such as the soil body, conveying dregs, pipeline lining cutting
Can, it has been widely used in the Tunnel Engineering such as subway, railway, highway, coal mine and water conservancy and hydropower.Cutter is that development machine realizes area
The main tool that face is excavated must then be replaced in time once cutter occurs wearing or damage, otherwise will seriously affect and apply
Work efficiency rate, or even damage cutterhead.
Currently there are two kinds of relatively advanced tool changing modes: freezing tool changing cutterhead and normal pressure tool changing cutterhead.Freezing
Tool changing cutterhead freezes face high pressure region, then carries out the tool changing operation that opens a position；Normal pressure tool changing cutterhead is then a kind of box-type
Structure cutterhead is arranged a variety of normal pressure removable cutting tools on cutterhead, is replaced using housing interior volume to cutter.
Although freezing tool changing cutterhead compares traditional cutter replacing method with normal pressure tool changing cutterhead and has apparent advantage, but still
There are respective limitations.The freeze cycle for freezing tool changing cutterhead is longer, when needing frequent tool changing under severe geological conditions not
It can be used as tool changing mode routinely；Normal pressure tool changing cutterhead may cause cutterhead under the conditions of crossing the specific geology such as stake and can not dig
Into, need to open a position operation the problems such as.How to take into account and realizes that the operation that opens a position is currently urgently to solve under the conditions of frequent tool changing and specific geology
Certainly the problem of.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of normal pressure tool changing cutterhead with freezing function, this has cold
The structure design for freezing the normal pressure tool changing cutterhead of function, which can effectively take into account, to be realized under the conditions of frequent tool changing and specific geology and opens a position
Operation.
In order to achieve the above object, the invention provides the following technical scheme:
A kind of normal pressure tool changing cutterhead with freezing function, including circular beater plate, the circular beater plate include multiple normal pressures
Tool changing spoke arm and multiple auxiliary beams, multiple normal pressure tool changing spoke arms pass through multiple auxiliary Liang Xianglian, multiple normal pressures respectively
Tool changing spoke arm radiation profiles around centered on the center of circle of the circular beater plate are provided on the normal pressure tool changing spoke arm several
Normal pressure tool changing cutter；At the side of the normal pressure tool changing spoke arm, inner panel, the outer surface of panel or panel itself be provided with it is cold
Frozen pipe road, the freezing pipeline have a first import and export for injecting or being discharged cryogenic liquid, and the freezing pipeline and
Heat-insulated pipeline is provided between cutterhead flange, the heat-insulated pipeline has the second disengaging for injecting or being discharged insulating liquid
Mouthful.
Preferably, it in the above-mentioned normal pressure tool changing cutterhead with freezing function, is respectively arranged on each normal pressure tool changing spoke arm
There is the cryovial road, the freezing pipeline on multiple normal pressure tool changing spoke arms is connected to form several freezing tube loops.
Preferably, in the above-mentioned normal pressure tool changing cutterhead with freezing function, the two sides of each normal pressure tool changing spoke arm are all provided with
It is equipped with the freezing pipeline, and the freezing pipeline of any normal pressure tool changing spoke arm side and adjacent another normal pressure
The freezing pipeline connection of tool changing spoke arm neighbour side forms the freezing tube loop.
Preferably, in the above-mentioned normal pressure tool changing cutterhead with freezing function, the first import and export is respectively arranged at cutterhead
Center or the central transition cabin of cutterhead.
Preferably, it in the above-mentioned normal pressure tool changing cutterhead with freezing function, is set between the freezing pipeline and cutterhead flange
Multiple heat-insulated pipelines are equipped with, are at least partly connected to form several heat-insulated tube loops in multiple heat-insulated pipelines.
Preferably, in the above-mentioned normal pressure tool changing cutterhead with freezing function, each heat-insulated pipeline successively connects to forming circle
The cricoid heat-insulated tube loop.
Preferably, in the above-mentioned normal pressure tool changing cutterhead with freezing function, the second import and export is respectively arranged at cutterhead
Center or the central transition cabin of cutterhead.
Preferably, in the above-mentioned normal pressure tool changing cutterhead with freezing function, normal pressure tool changing cutter is according to " rice " described in normal pressure
Font or Archimedian screw type are arranged on the panel of the normal pressure tool changing spoke arm.
Preferably, in the above-mentioned normal pressure tool changing cutterhead with freezing function, there are five the normal pressure tool changing spoke arm and five for tool
A auxiliary arm, each auxiliary arm is located between the normal pressure tool changing spoke arm of adjacent two, and the two is connected.
Normal pressure tool changing cutterhead provided by the invention with freezing function includes circular beater plate, freezing pipeline and instlated tubular
Road.Wherein, circular beater plate includes multiple normal pressure tool changing spoke arms and multiple auxiliary beams, and multiple normal pressure tool changing spoke arms pass through multiple auxiliary respectively
Beam is connected, multiple normal pressure tool changing spoke arms radiation profiles around centered on the center of circle of circular beater plate, sets on normal pressure tool changing spoke arm
It is equipped with several normal pressure tool changing cutters.Freezing pipeline be set to the side of normal pressure tool changing spoke arm, at inner panel, the outer surface of panel
Or panel itself, and pipeline is freezed with the first import and export for injecting or being discharged cryogenic liquid.Heat-insulated pipeline is set to
It freezes between pipeline and cutterhead flange, and heat-insulated pipeline has the second import and export for injecting or being discharged insulating liquid.
Using the normal pressure tool changing cutterhead provided by the invention with freezing function, when needing tool changing, cutterhead is mainly utilized
Normal pressure removable cutting tool is realized in space in normal pressure tool changing width arm to be replaced.Warehouse entry operation is needed when meeting special geologic condition
When, using freezing pipeline, cryogenic liquid is injected, face high pressure region before cutter head panel is freezed, made to open a position
Industry provides the operating environment of stable safety.Heat-insulated pipeline is connected at the same time, insulating liquid is injected, in the company of cutterhead and rear
It connects transition region and forms heat insulating belt, ensure that the device temperatures such as the main driving in cutterhead rear are normal, to adjacent component when reducing freezing
Negative effect.To sum up, the progress of normal pressure tool changing cutterhead had both can be used in the normal pressure tool changing cutterhead provided by the present application with freezing function
Cutter is frequently replaced, and can be freezed by being disposed with freezing pipeline to face, can be ensured to enter in special circumstances and be excavated
Storehouse operation.Freezing tool changing cutterhead and the respective deficiency of normal pressure tool changing cutterhead are overcome, construction efficiency and equipment safety are improved, is dropped
Low construction cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that the freezing pipeline of the normal pressure tool changing cutterhead with freezing function of a specific embodiment of the invention is arranged just
View；
Fig. 2 is the side view for freezing pipeline arrangement.
It is marked in attached drawing as follows:
Normal pressure tool changing spoke arm 1, auxiliary beam 2, normal pressure tool changing cutter 3 freeze pipeline 4, heat-insulated pipeline 5, cutterhead flange 6, center
Transfer chamber 7, main driving 8, first import and export 9.
Specific embodiment
The embodiment of the invention discloses a kind of normal pressure tool changing cutterhead with freezing function, can take into account the frequent replacement of cutter
With open a position tool changing or the maintenance work under specified conditions.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-Fig. 2 is please referred to, Fig. 1 is the normal pressure tool changing cutterhead with freezing function of a specific embodiment of the invention
It freezes pipeline and arranges front view；Fig. 2 is the side view for freezing pipeline arrangement.
In a specific embodiment, the normal pressure tool changing cutterhead provided by the invention with freezing function includes circular knife
Disk, freezing pipeline 4 and heat-insulated pipeline 5.
Wherein, circular beater plate includes multiple normal pressure tool changing spoke arms 1 and multiple auxiliary beams 2, and multiple normal pressure tool changing spoke arms 1 lead to respectively
It crosses multiple auxiliary beams 2 to be connected, radiation profiles, normal pressure change multiple normal pressure tool changing spoke arms 1 around centered on the center of circle of circular beater plate
Several normal pressure tool changing cutters 3 are provided on knife spoke arm 1.The number of specific normal pressure tool changing spoke arm 1 and auxiliary beam 2 can be set as needed
It sets, is not specifically limited herein.As shown in Figure 1, five normal pressure tool changing spoke arms 1 and five auxiliary arms, each auxiliary arm can be set
It is located between two adjacent normal pressure tool changing spoke arms 1, and the two is connected.The structure of specific normal pressure tool changing spoke arm 1 and auxiliary beam 2
And connection type can refer to the structure of conventional atmospheric tool changing cutterhead in the prior art, be not specifically limited herein.Multiple normal pressures change
Radiation profiles, multiple normal pressure tool changing spoke arms 1 are uniformly distributed knife spoke arm 1 around centered on the center of circle of circular beater plate, that is,
Angle between adjacent two normal pressures tool changing spoke arm 1 is equal.
Several normal pressure tool changing cutters 3 are provided on normal pressure tool changing spoke arm 1, the quantity of specific normal pressure tool changing cutter 3 can basis
It needs to be arranged and be not specifically limited herein, the structure of normal pressure tool changing cutter 3 and mounting means etc. are see also normal in the prior art
The normal pressure tool changing cutterhead of rule.By the setting of above structure, so that cutterhead provided by the present application can be realized the function of normal pressure tool changing
Energy.
Freezing pipeline 4 be set to the side of normal pressure tool changing spoke arm 1, at inner panel, the outer surface of panel or panel itself,
And pipeline 4 is freezed with the first import and export 9 for injecting or being discharged cryogenic liquid.Namely freezing pipeline 4 is as needed
The side of normal pressure tool changing spoke arm 1 is optionally set, is perhaps arranged at the inner panel of normal pressure tool changing spoke arm 1 or is arranged
In the panel outer surface of normal pressure tool changing spoke arm 1, or the panel itself of setting normal pressure tool changing spoke arm 1, it is such as embedded in panel itself,
When needing warehouse entry operation, cryogenic liquid is injected into freezing pipeline 4 by first import and export 9, to face before cutter head panel
High pressure region is freezed.Particular number, the extending direction etc. of freezing pipeline 4 can be set as needed, and not do herein specific
It limits.Preferably, freezing pipeline 4 is arranged in inside normal pressure tool changing width arm, is not influenced by storehouse environment is excavated, maintenance easy to repair.
Heat-insulated pipeline 5 is set between freezing pipeline 4 and cutterhead flange 6, and heat-insulated pipeline 5 has for injecting or being discharged
The second import and export of insulating liquid.And then when needing warehouse entry operation, injected by first import and export 9 into freezing pipeline 4 low
While warm coolant liquid, insulating liquid is injected into heat-insulated pipeline 5 by second import and export, in the connection of cutterhead and rear
It crosses area and forms heat insulating belt, ensure that the main driving 8 at cutterhead rear waits device temperatures normal.The extending direction etc. of specific heat-insulated pipeline 5
It can be set as needed, be not specifically limited herein.
It should be noted that then cutter head structure part and normal pressure tool changing cutter 3 are using resistance to since the cutterhead has freezing function
Low temperature seal, i.e. cutterhead body and normal pressure tool changing cutter 3 are all made of low temperature resistant design, are suitable for low temperature environment, do not influence equipment
Performance.
Using the normal pressure tool changing cutterhead provided by the invention with freezing function, when needing tool changing, cutterhead is mainly utilized
Normal pressure removable cutting tool is realized in space in normal pressure tool changing width arm to be replaced.Warehouse entry operation is needed when meeting special geologic condition
When, using freezing pipeline 4, cryogenic liquid is injected, face high pressure region before cutter head panel is freezed, made to open a position
Industry provides the operating environment of stable safety.Heat-insulated pipeline 5 is connected at the same time, insulating liquid is injected, in the company of cutterhead and rear
It connects transition region and forms heat insulating belt, ensure that the main driving 8 in cutterhead rear waits device temperatures normal, to adjacent component when reducing freezing
Negative effect.To sum up, the progress of normal pressure tool changing cutterhead had both can be used in the normal pressure tool changing cutterhead provided by the present application with freezing function
Cutter is frequently replaced, and can be freezed by being disposed with freezing pipeline 4 to face, can be ensured to enter in special circumstances and be excavated
Storehouse operation.Freezing tool changing cutterhead and the respective deficiency of normal pressure tool changing cutterhead are overcome, construction efficiency and equipment safety are improved, is dropped
Low construction cost.
Specifically, freezing pipeline 4 is respectively disposed on each normal pressure tool changing spoke arm 1, the freezing on multiple normal pressure tool changing spoke arms 1
Pipeline 4 is connected to form several freezing tube loops.Freezing pipeline 4 on namely each normal pressure tool changing spoke arm 1 is optionally normal with other
The connection of freezing pipeline 4 of tool changing spoke arm 1 is pressed to form freezing tube loop.It such as freezes pipeline 4 and forms freezing tube loop, Huo Zhesan two-by-two
Three form freezing tube loop etc..4 public first import and exports 9 of each freezing pipeline in tube loop are freezed, and then can simplify
Structure.
Further, the two sides of each normal pressure tool changing spoke arm 1 are provided with freezing pipeline 4, and any normal pressure tool changing spoke arm 1 one
The freezing pipeline 4 of side is connected to formation freezing tube loop with the freezing pipeline 4 of the adjacent side of adjacent another normal pressure tool changing spoke arm 1.Such as Fig. 1
Shown, each adjacent two normal pressure tool changing spoke arm 1, adjacent side is respectively arranged with freezing pipeline 4, and the cryovial of adjacent side
Road 4 is connected to form freezing tube loop.
In the above embodiments, first import and export 9 is respectively arranged at the central transition cabin 7 of cutter head center or cutterhead.Such as
On the one hand the layout of first import and export 9 is convenient in this setting, on the other hand, be also convenient for injecting liquid or row by first import and export 9
Liquid out.Second import and export can also specifically be respectively arranged at the central transition cabin 7 of cutter head center or cutterhead.In first import and export
9 and second import and export when being set on central transition cabin 7, the centre of gyration can be passed through and access cryogenic liquid or insulating liquid.
For heat-insulated pipeline 5, multiple heat-insulated pipelines 5 can be provided between freezing pipeline 4 and cutterhead flange 6, it is multiple
Several heat-insulated tube loops are at least partly connected to form in heat-insulated pipeline 5.Namely each heat-insulated pipeline 5 is optionally heat-insulated with other
The connection of pipeline 5 forms heat-insulated tube loop.As heat-insulated pipeline 5 forms heat-insulated tube loop or three or the three heat-insulated tube loops of formation two-by-two
Deng.Each 5 public second import and exports of heat-insulated pipeline in heat-insulated tube loop, and then can simplify structure.
Specifically, each heat-insulated pipeline 5 successively connects to forming circular heat-insulated tube loop.Also successively with regard to heat-insulated pipeline 5
It is connected to form whole heat-insulated tube loop, heat-insulated tube loop specifically can be at annular shape, preferably can be concentric with cutterhead flange 6
Setting.In order to improve heat insulation, multiple heat-insulated tube loops at annular shape, and successively sheathed setting can be set, with effective
Form heat insulating belt.
In the various embodiments described above, normal pressure tool changing cutter 3 is arranged according to " rice " font or Archimedian screw type
On the panel of normal pressure tool changing spoke arm 1.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of normal pressure tool changing cutterhead with freezing function, which is characterized in that including circular beater plate, the circular beater plate includes
Multiple normal pressure tool changing spoke arms and multiple auxiliary beams, multiple normal pressure tool changing spoke arms pass through multiple auxiliary Liang Xianglian respectively, multiple
Normal pressure tool changing spoke arm radiation profiles around centered on the center of circle of the circular beater plate are set on the normal pressure tool changing spoke arm
It is equipped with several normal pressure tool changing cutters；At the side of the normal pressure tool changing spoke arm, inner panel, the outer surface of panel or panel itself
It is provided with freezing pipeline, the freezing pipeline has the first import and export for injecting or being discharged cryogenic liquid, and described cold
It is provided with heat-insulated pipeline between frozen pipe road and cutterhead flange, the heat-insulated pipeline has for injecting or being discharged insulating liquid
Two inlet and outlet.
2. the normal pressure tool changing cutterhead according to claim 1 with freezing function, which is characterized in that each normal pressure tool changing
The freezing pipeline is respectively disposed on spoke arm, the freezing pipeline on multiple normal pressure tool changing spoke arms is connected to form several
Freeze tube loop.
3. the normal pressure tool changing cutterhead according to claim 2 with freezing function, which is characterized in that each normal pressure tool changing
The two sides of spoke arm are provided with the freezing pipeline, and the freezing pipeline of any normal pressure tool changing spoke arm side with it is adjacent
The freezing pipeline connection of another normal pressure tool changing spoke arm neighbour side form the freezing tube loop.
4. the normal pressure tool changing cutterhead according to claim 1 with freezing function, which is characterized in that the first import and export
It is set to the central transition cabin of cutter head center or cutterhead.
5. the normal pressure tool changing cutterhead according to claim 1 with freezing function, which is characterized in that the freezing pipeline with
Multiple heat-insulated pipelines are provided between the cutterhead flange, if being at least partly connected to form in multiple heat-insulated pipelines
Do heat-insulated tube loop.
6. the normal pressure tool changing cutterhead according to claim 5 with freezing function, which is characterized in that each heat-insulated pipeline
Successively connect to forming the circular heat-insulated tube loop.
7. the normal pressure tool changing cutterhead according to claim 1 with freezing function, which is characterized in that the second import and export
It is set to the central transition cabin of cutter head center or cutterhead.
8. the normal pressure tool changing cutterhead according to claim 1-7 with freezing function, which is characterized in that described normal
Pressure tool changing cutter is arranged on the panel of the normal pressure tool changing spoke arm according to " rice " font or Archimedian screw type.
9. the normal pressure tool changing cutterhead according to claim 8 with freezing function, which is characterized in that there are five described normal for tool
Pressure tool changing spoke arm and five auxiliary arms, each auxiliary arm are located between the normal pressure tool changing spoke arm of adjacent two, and
The two is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423963.5A CN109989764A (en) | 2019-05-21 | 2019-05-21 | Normal pressure tool changing cutter head with freezing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423963.5A CN109989764A (en) | 2019-05-21 | 2019-05-21 | Normal pressure tool changing cutter head with freezing function |
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Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109398A (en) * | 2021-11-29 | 2022-03-01 | 中国矿业大学(北京) | Thermoelectric refrigeration manual freezing shield cutter head |
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| 崔兵兵;李方政;: "塑料冻结管冻土温度形成规律", 地下空间与工程学报, no. 05, pages 1235 - 1240 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109398A (en) * | 2021-11-29 | 2022-03-01 | 中国矿业大学(北京) | Thermoelectric refrigeration manual freezing shield cutter head |
| CN114109398B (en) * | 2021-11-29 | 2023-01-03 | 中国矿业大学(北京) | Thermoelectric refrigeration manual freezing shield cutter head |
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