CN109236306A - The Safety Redundancy mechanism and its installation method for preventing normal pressure removable cutting tool from falling off - Google Patents
The Safety Redundancy mechanism and its installation method for preventing normal pressure removable cutting tool from falling off Download PDFInfo
- Publication number
- CN109236306A CN109236306A CN201811213528.1A CN201811213528A CN109236306A CN 109236306 A CN109236306 A CN 109236306A CN 201811213528 A CN201811213528 A CN 201811213528A CN 109236306 A CN109236306 A CN 109236306A
- Authority
- CN
- China
- Prior art keywords
- cover board
- knife bucket
- girff
- connection piece
- fastening connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 25
- 238000009412 basement excavation Methods 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000010276 construction Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000006424 Flood reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to a kind of Safety Redundancy mechanisms for preventing normal pressure removable cutting tool from falling off, comprising: gear is set to the cover board of the end on knife bucket far from cutter, is installed with gap between the end far from the cutter on the cover board and the knife bucket；And be fastenedly connected in the fastening connection piece of the cover board, the cover board is fastenedly connected in the girff for installing the knife bucket by the fastening connection piece.The present invention blocks knife bucket using cover board, even if knife bucket bolt fracture, knife bucket pop up backward, also it can be blocked by cover board, so that knife bucket will not be detached from from girff, pouring into for muddy water is avoided, so that effectively having evaded knife bucket is detached from the risk that pop-up girff causes flange tank to flood.It is installed with gap between cover board and knife bucket, so that knife bucket can pop up a distance backward, knife bucket is not contacted with excavation face, so that knife bucket no longer stress, be can be avoided and is held the fastening connection piece of cover board forced breakage again.
Description
Technical field
The present invention relates to shield-tunneling construction field, refer in particular to a kind of Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off and
Its installation method.
Background technique
In recent years, further speeding up with urbanization process, shield-tunneling construction with safety, quickly, high automation, to applying
Many advantages, such as interference of work route periphery is small is increasingly used in subway construction.The development of shield technique is also a day crescent
Different, recent years, the tens of super-large-diameter shield machines for adding the flange tank outfit replaceable cutterhead of normal pressure were risen in the country, often
Complicated geologic structure is encountered, the unavoidable tool changing work of shield machine in the driving of long range, by severe geological condition shadow
It rings, it is necessary to tool changing is continually carried out, the phenomenon that replaceable scraper knife bucket fixing bolt of normal pressure is pulled off on cutterhead, grows in intensity,
Suddenly scraper knife bucket fixed screw just occurs to break, knife bucket, which falls off, pops up the accident that girff causes flange tank to flood, and situation is tight
Tunnel even can be flooded when weight, it is just as a not timing bomb, and there are great security risks.
All occurred to be broken because of normal pressure replaceable blade bucket fixing bolt in the work progress of many engineerings, knife bucket is from cutterhead
The case where installation site falls off, and a large amount of muddy water pour in flange tank.It needs to close flange tank door in time at this time, prevents muddy water from flooding tunnel
Road；Thereafter, it is also necessary to which professional air pressure work enters flange tank leak stopping.The accident itself exists with treatment process floods tunnel and high pressure
The big security risk of lower construction operation two.Restore to promote to shield machine from the accident is handled, the used time is typically about 5 days, largely effects on
Construction speed.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of peace for preventing normal pressure removable cutting tool from falling off is provided
Full redundancy mechanism solves existing knife bucket fixed screw and easily breaks and muddy water is caused to pour in flange tank, exists and flood tunnel and height
Press the problem of two security risks of construction operation, and influence construction speed etc..
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of Safety Redundancy mechanisms for preventing normal pressure removable cutting tool from falling off, comprising:
Gear is set to the cover board of the end on knife bucket far from cutter, the separate cutter on the cover board and the knife bucket
Gap is installed between end；And
Be fastenedly connected in the fastening connection piece of the cover board, by the fastening connection piece by the cover board be fastenedly connected in
The girff of the knife bucket is installed.
The present invention blocks knife bucket using cover board, even if knife bucket bolt fracture, knife bucket pop up backward, can also be blocked by cover board,
So that knife bucket will not be detached from from girff, pouring into for muddy water is avoided, is caused to effectively evade knife bucket and be detached from pop-up girff
The risk for flooding flange tank.Be installed with gap between cover board and knife bucket so that knife bucket can pop up a distance backward, knife bucket with
Excavation face does not contact, so that knife bucket no longer stress, can be avoided and holds the fastening connection piece of cover board forced breakage again.In knife bucket
After bolt fracture, knife bucket is blocked using cover board, has dealt with also convenience and high-efficiency, knife bucket normal pressure tool changing tooling only need to be installed, received
Contracting jack extracts knife bucket out, and shuts girff gate, and re-replacing knife bucket fixing bolt can restore to promote, from happen to
Processing problem, which arrives recovery again and promotes, can be completed less than 4 hours altogether, compares and has fundamentally evaded after flange tank floods in the past
Staff's warehouse entry leak stopping risk with pressure, at the same be greatly saved processing dangerous situation reality, saved the duration, equipment and manually at
This.
Safety Redundancy of the present invention mechanism further improvement lies in that, on the girff far from the cutter end be equipped with method
Blue plate；
The connecting hole corresponded on the flanged plate on the cover board offers through-hole；
The fastening connection piece is connection bolt, and the connection bolt passes through through-hole and the flanged plate on the cover board
On connecting hole, be screwed together with an attaching nut, to be fastenedly connected the cover board and the flanged plate.
Safety Redundancy of the present invention mechanism further improvement lies in that, casing is also arranged on the fastening connection piece, it is described
Collar supports are between the cover board and the girff.
Safety Redundancy of the present invention mechanism further improvement lies in that, the fastening connection piece is connected to the top of the cover board
The bottom and.
Safety Redundancy of the present invention mechanism further improvement lies in that, the size of the cover board is greater than on the knife bucket far from institute
State the size of the end of cutter.
The present invention also provides a kind of installation methods of Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off, including
Following steps:
One cover board is provided, by the cover board gear be set to knife bucket on far from cutter end, and enable the cover board with it is described
Gap is installed between end on knife bucket far from the cutter；And
Fastening connection piece is provided, the girff of the cover board and the installation knife bucket is fastened using the fastening connection piece and is connected
It connects.
Installation method of the present invention further improvement lies in that, using the fastening connection piece will the cover board and installation described in
The girff of knife bucket is fastenedly connected, comprising:
Flanged plate is set in the end on the girff far from the cutter, and in opening up connecting hole on the flanged plate；
Through-hole is opened up in corresponding to the connecting hole on the flanged plate on the cover board；
The fastening connection piece is connection bolt, and the connection bolt is passed through through-hole and the flange on the cover board
Connecting hole on plate, and be screwed together to be fastenedly connected the cover board and the flanged plate with an attaching nut.
Installation method of the present invention further improvement lies in that, further includes:
Sleeve is provided, described sleeve pipe is sheathed on the fastening connection piece, and described sleeve pipe is enabled to be supported in the lid
Between plate and the girff.
Installation method of the present invention further improvement lies in that, by the fastening connection piece be connected to the cover board top and
Bottom.
Installation method of the present invention further improvement lies in that, the size of the cover board is greater than on the knife bucket far from the knife
The size of the end of tool.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of knife bucket and girff in the prior art.
Fig. 2 is the structural representation that the Safety Redundancy mechanism that the present invention prevents normal pressure removable cutting tool from falling off is installed on girff
Figure.
Fig. 3 is the flow chart of the installation method for the Safety Redundancy mechanism that the present invention prevents normal pressure removable cutting tool from falling off.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Referring to Fig.2, the present invention provides a kind of Safety Redundancy mechanisms and its installation for preventing normal pressure removable cutting tool from falling off
Method, setting cover board, using being bolted, do not influence normal pressure tool changing work, it is only necessary to which removing cover board before tool changing can with girff
With normal tool changing, cover board is reinstalled and can be played a protective role again after tool changing；It is installed with gap between cover board and knife bucket, it can be square
Just the case where checking bolt and processing bolt fracture；By staying the gap set to allow knife bucket after bolt fracture that can move backward one section
Distance, so that knife bucket can leave excavation face certain distance without by reaction force, avoiding the bolt of pulling cover board again again
Forced breakage；Fastening connection piece is able to bear impulse force when knife bucket pops up without being broken, and guarantees the secured and reliability of structure；
After knife bucket bolt fracture, sealing ring and knife bucket that knife bucket moves backward a distance without being detached from from girff, on knife bucket
It can play the role of preventing muddy water from pouring in flange tank together.Prevent normal pressure removable cutting tool de- the present invention with reference to the accompanying drawing
The Safety Redundancy mechanism and its installation method fallen is illustrated.
Refering to fig. 1, it is shown that the structural schematic diagram of knife bucket and girff in the prior art.As shown in Figure 1, to realize scraper
The normal pressure of 12a is replaced, and installs scraper 12a using the mounting means of knife bucket 11a and girff 13a in the prior art, and girff 13a is solid
It is scheduled on shield machine, installation space is formed with inside girff 13a, and be provided with gate in the middle part of girff 13a, knife bucket 11a's
Front end is fixedly connected with scraper 12a, and then knife bucket 11a is inserted into girff 13a, scraper 12a is enabled to stretch from the front end of girff 13a
Be placed in the front of the cutterhead of shield machine out, be provided with multiple-sealed circle on knife bucket 11a, by knife bucket 11a and girff 13a it
Between gap seals.It is bolted connection between knife bucket 11a and girff 13a.In shield machine tunneling process, scraper 12a with
Excavation face is in contact and cuts the soil body at excavation face, and the reaction force that such excavation face acts on scraper 12a can be straight
It connects and acts on the bolt between knife bucket 11a and girff 13a, in prolonged tunneling process, bolt is easy to be broken,
When bolt fracture, reaction force suffered by scraper 12a can pop up knife bucket 11a out of girff 13a, thus in girff 13a
The installation space in portion has been connected to excavation face and shield machine in front of cutterhead, and the muddy water at excavation face can directly pour in shield machine
Interior, for this case once occurring, dealing with can be very intractable.Staff's negative high voltage with pressure is needed to enter flange tank or open
It digs storehouse and finds knife bucket and fall off and position and then special bored plate is installed or silently blocks leak, also need to clear up flange for a long time afterwards
Tank and many equipment occur to the time for restoring normally at least to need a week from dangerous situation, waste a large amount of manpower, material resources and financial resources,
Seriously affect project progress.
To solve the above problems, the present invention provides a kind of Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off,
Referring to Fig.2, showing that the Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off is installed on the structural schematic diagram of girff.Below
In conjunction with Fig. 2, the Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off the present invention is illustrated.
As shown in Fig. 2, the Safety Redundancy mechanism 20 for preventing normal pressure removable cutting tool from falling off of the invention includes 21 He of cover board
Fastening connection piece 22, the gear of cover board 21 are set at the end 111 on knife bucket 11 far from cutter 12, the end of the cover board 21 and knife bucket 11
It is installed with gap 211 between 111, makes have a certain distance between cover board 21 and the end 111 of knife bucket 11 using gap 211；
Fastening connection piece 22 is fastenedly connected in cover board 21, and cover board 21 is fastenedly connected in the knife of installation knife bucket 11 by fastening connection piece 22
Case 13.
The present invention connects the cover board 21 that a gear sets knife bucket 11 by fastening connection piece 22 in the end of girff 13, utilizes lid
Plate 21 blocks the knife bucket 11 popped up backward, avoids knife bucket 11 and is detached from from girff 13, sealing using knife bucket 11 and thereon
Circle blocks the installation space inside girff 13, avoids pouring into for muddy water, and having evaded knife bucket disengaging pop-up girff causes flange
The risk that tank floods.
It is installed with gap between cover board 21 and the end 111 of knife bucket 11, so that knife bucket 11 can pop up a distance backward, into
And the scraper 12 of knife bucket 11 is not contacted with excavation face, knife bucket is no longer influenced by the reaction force of excavation face, i.e. knife bucket will not be to cover board
21 and fastening connection piece 22 apply active force, cover board 21 and fastening connection piece 22 only need to bear knife bucket 11 rebounds backward one
Secondary Shocks, without persistently by opposition, can be avoided the feelings for holding the fastening connection piece of cover board forced breakage again
Condition occurs.Safety Redundancy mechanism of the invention has the advantages that sound construction, reliable and stable.
Knife bucket has blocked after knife bucket bolt fracture, using cover board in Safety Redundancy mechanism of the invention, deals with also side
Just efficiently, knife bucket normal pressure tool changing tooling need to be only installed, jack is shunk and extract knife bucket out, and shut girff gate, re-replace knife
Bucket fixing bolt can restore to promote, and can be completed from happening to processing problem to promote to recovery again less than 4 hours altogether,
It compares and has fundamentally evaded flange tank in the past and flood rear staff's warehouse entry leak stopping risk with pressure, while processing is greatly saved
The reality of dangerous situation has saved duration, equipment and cost of labor.
As a better embodiment of the invention, the end on girff 13 far from cutter 12 is equipped with flanged plate 131,
Multiple connecting holes are offered on the flanged plate 131；Connecting hole on cover board 21 on companion flange plate 131 offers through-hole；Fastening
Connector 22 is connection bolt, and connection bolt passes through the connecting hole on through-hole and flanged plate 131 on cover board 21, and connect with one
Nut is screwed together, to be fastenedly connected cover board 21 and flanged plate 131.
It is bolted cover board 21 and girff 13 using connection, so that assembly is simple and convenient, and connects the bonding strength of bolt
The impact force when pop-up of knife bucket is able to bear without being broken.
As another better embodiment of the invention, be also arranged with casing on fastening connection piece 22, collar supports in
Between cover board 21 and girff 13.Using collar supports between cover board 21 and the flanged plate 131 of girff 13, to improve 21 He of cover board
Connectivity robustness and stability between girff 13, casing and fastening connection piece 22 by cover board 21 and girff 13 connect into one it is whole
Body structure, when cover board 21 is by impact force backward, casing and fastening connection piece 22 are together by the opposition of cover board 21
Part passes to girff 13, and then passes to shield machine by girff 13, shares the part of impact force that cover board 21 is born, realizes
Overall structure bears the impact force that the rebound of knife bucket 11 generates together, ensure that the safety and reliability of structure.
As another better embodiment of the invention, fastening connection piece 22 is connected to the top and bottom of cover board 21.And
The setting of fastening connection piece 22 is so that have certain spacing between cover board 21 and the flanged plate 131 of girff 13, which can facilitate
It checks the bolt between girff 13 and knife bucket 11, also facilitates the crack conditions for handling the bolt.
Preferably, being respectively provided with four fastening connection pieces 22, and four fastening connection pieces 22 in the top and bottom of cover board 21
It is arranged at equal intervals.
As another better embodiment of the invention, the size of cover board 21 is greater than the end on knife bucket 11 far from cutter 12
111 size.The end 111 that knife bucket 11 is blocked using the cover board 21 of larger size, avoids falling off for knife bucket 11.
Preferably, cover board 21 is designed and sized to be adapted with the size of flanged plate 131.
The middle part of girff 13 of the invention is provided with gate 132, after knife bucket 11 pops up a distance backward, removes cover board
21, and knife bucket normal pressure tool changing tooling is installed, knife bucket is extracted out, and close the installation space inside girff 13 using gate 132, more
The fixing bolt of tool changing bucket 11, then knife bucket 11 is installed on girff 13, then cover board 21 is mounted on girff 13, it can restore
It promotes.
The installation method of the Safety Redundancy mechanism provided by the invention for preventing normal pressure removable cutting tool from falling off is carried out below
Explanation.
As shown in figure 3, a kind of installation of Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off provided by the invention
Method includes the following steps:
Step S101 is executed, a cover board is provided, as shown in connection with fig. 2, the gear of cover board 21 is set on knife bucket 11 far from cutter 12
End 111 at, and enable on cover board 21 and knife bucket 11 far from cutter 12 end 111 between be installed with gap 211；Then it executes
Step S102.
Step S102 is executed, fastening connection piece 22 is provided, by cover board 21 and knife bucket 11 is installed using fastening connection piece 22
Girff 13 is fastenedly connected.
The cover board 21 that a gear sets knife bucket 11 is connected by fastening connection piece 22 in the end of girff 13, it will using cover board 21
The knife bucket 11 popped up backward blocks, and avoids knife bucket 11 and is detached from from girff 13, and sealing ring using knife bucket 11 and thereon is by knife
Installation space inside case 13 blocks, and avoids pouring into for muddy water, and having evaded knife bucket disengaging pop-up girff causes flange tank to flood
Risk.
It is installed with gap between cover board 21 and the end 111 of knife bucket 11, so that knife bucket 11 can pop up a distance backward, into
And the scraper 12 of knife bucket 11 is not contacted with excavation face, knife bucket is no longer influenced by the reaction force of excavation face, i.e. knife bucket will not be to cover board
21 and fastening connection piece 22 apply active force, cover board 21 and fastening connection piece 22 only need to bear knife bucket 11 rebounds backward one
Secondary Shocks, without persistently by opposition, can be avoided the feelings for holding the fastening connection piece of cover board forced breakage again
Condition occurs.
As a better embodiment of the invention, the girff of cover board and installation knife bucket is fastened using fastening connection piece and is connected
It connects, comprising:
Flanged plate 131 is set in the end on girff 13 far from cutter 12, and in opening up connecting hole on flanged plate 131；
Through-hole is opened up in the connecting hole on cover board 21 on companion flange plate 131；
Fastening connection piece 22 is connection bolt, will connect company of the bolt on the through-hole and flanged plate 131 on cover board 21
Hole is connect, and is screwed together to be fastenedly connected cover board 21 and flanged plate 131 with an attaching nut.
As another better embodiment of the invention, further includes:
Sleeve is provided, casing is sheathed on fastening connection piece, and enable collar supports between cover board and girff.
Using collar supports between cover board 21 and the flanged plate 131 of girff 13, to improve between cover board 21 and girff 13
Connectivity robustness and stability, cover board 21 and girff 13 connect into an overall structure by casing and fastening connection piece 22,
When cover board 21 is by impact force backward, casing and fastening connection piece 22 together pass to the opposition part of cover board 21
Girff 13, and then shield machine is passed to by girff 13, the part of impact force that cover board 21 is born is shared, overall structure one is realized
The impact force that the rebound of receiving knife bucket 11 generates is played, ensure that the safety and reliability of structure.
As another better embodiment of the invention, fastening connection piece is connected to the top and bottom of cover board.And it is tight
The setting of connected fitting 22 is so that have certain spacing between cover board 21 and the flanged plate 131 of girff 13, which can facilitate inspection
The bolt between girff 13 and knife bucket 11 is looked into, the crack conditions for handling the bolt are also facilitated.
Preferably, being respectively provided with four fastening connection pieces 22, and four fastening connection pieces 22 in the top and bottom of cover board 21
It is arranged at equal intervals.
As another better embodiment of the invention, the size of cover board 21 is greater than the end on knife bucket 11 far from cutter 12
111 size.The end 111 that knife bucket 11 is blocked using the cover board 21 of larger size, avoids falling off for knife bucket 11.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (10)
1. a kind of Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off characterized by comprising
Gear is set to the cover board of the end on knife bucket far from cutter, the end far from the cutter on the cover board and the knife bucket
Between be installed with gap；And
It is fastenedly connected in the fastening connection piece of the cover board, the cover board is fastenedly connected in installation by the fastening connection piece
The girff of the knife bucket.
2. Safety Redundancy mechanism as described in claim 1, which is characterized in that the end on the girff far from the cutter is set
There is flanged plate；
The connecting hole corresponded on the flanged plate on the cover board offers through-hole；
The fastening connection piece is connection bolt, and the connection bolt passes through on through-hole and the flanged plate on the cover board
Connecting hole is screwed together with an attaching nut, to be fastenedly connected the cover board and the flanged plate.
3. Safety Redundancy mechanism as claimed in claim 1 or 2, which is characterized in that be also arranged on the fastening connection piece
Pipe, described sleeve pipe are supported between the cover board and the girff.
4. Safety Redundancy mechanism as described in claim 1, which is characterized in that the fastening connection piece is connected to the cover board
Top and bottom.
5. Safety Redundancy mechanism as described in claim 1, which is characterized in that the size of the cover board is greater than remote on the knife bucket
The size of end from the cutter.
6. a kind of installation method for the Safety Redundancy mechanism for preventing normal pressure removable cutting tool from falling off, which is characterized in that including as follows
Step:
One cover board is provided, cover board gear is set to the end on knife bucket far from cutter, and enable the cover board and the knife bucket
Gap is installed between the upper end far from the cutter；And
Fastening connection piece is provided, is fastenedly connected the cover board with the girff for installing the knife bucket using the fastening connection piece.
7. installation method as claimed in claim 6, which is characterized in that by the cover board and installed using the fastening connection piece
The girff of the knife bucket is fastenedly connected, comprising:
Flanged plate is set in the end on the girff far from the cutter, and in opening up connecting hole on the flanged plate；
Through-hole is opened up in corresponding to the connecting hole on the flanged plate on the cover board；
The fastening connection piece is connection bolt, and the connection bolt is passed through on through-hole and the flanged plate on the cover board
Connecting hole, and be screwed together with an attaching nut to being fastenedly connected the cover board and the flanged plate.
8. installation method as claimed in claims 6 or 7, which is characterized in that further include:
There is provided sleeve, described sleeve pipe is sheathed on the fastening connection piece, and enable described sleeve pipe be supported in the cover board and
Between the girff.
9. installation method as claimed in claim 6, which is characterized in that the fastening connection piece is connected to the top of the cover board
Portion and bottom.
10. installation method as claimed in claim 6, which is characterized in that the size of the cover board is greater than separate on the knife bucket
The size of the end of the cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213528.1A CN109236306B (en) | 2018-10-18 | 2018-10-18 | Safety redundancy mechanism for preventing replaceable cutter under normal pressure from falling off and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213528.1A CN109236306B (en) | 2018-10-18 | 2018-10-18 | Safety redundancy mechanism for preventing replaceable cutter under normal pressure from falling off and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109236306A true CN109236306A (en) | 2019-01-18 |
| CN109236306B CN109236306B (en) | 2020-10-27 |
Family
ID=65053958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811213528.1A Active CN109236306B (en) | 2018-10-18 | 2018-10-18 | Safety redundancy mechanism for preventing replaceable cutter under normal pressure from falling off and installation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109236306B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331985A (en) * | 2019-07-30 | 2019-10-15 | 中铁工程装备集团有限公司 | Normal pressure cutter knife cylinder retracts extremely detects preventing mean and detection prevention method |
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| CN106499401A (en) * | 2016-12-19 | 2017-03-15 | 中交隧道工程局有限公司 | A kind of super-large-diameter shield machine normal pressure tool changing device and method |
| CN206636566U (en) * | 2017-03-20 | 2017-11-14 | 中铁十四局集团有限公司 | A kind of normal pressure scraper changes simulation storehouse |
| CN107893663A (en) * | 2017-12-26 | 2018-04-10 | 中铁工程装备集团有限公司 | A kind of replaceable doctor blade device of normal pressure |
| CN207960615U (en) * | 2018-03-07 | 2018-10-12 | 中铁隧道局集团有限公司 | Shield machine normal pressure tool changing knife lid, knife cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110331985A (en) * | 2019-07-30 | 2019-10-15 | 中铁工程装备集团有限公司 | Normal pressure cutter knife cylinder retracts extremely detects preventing mean and detection prevention method |
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