CN214660184U - Shield constructs quick-witted blade disc convenient to change cutter - Google Patents
Shield constructs quick-witted blade disc convenient to change cutter Download PDFInfo
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- CN214660184U CN214660184U CN202120941166.9U CN202120941166U CN214660184U CN 214660184 U CN214660184 U CN 214660184U CN 202120941166 U CN202120941166 U CN 202120941166U CN 214660184 U CN214660184 U CN 214660184U
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Abstract
The utility model provides a shield constructs quick-witted blade disc convenient to change cutter, includes panel (1) of blade disc, the cutter of the front installation of panel (1), its characterized in that: the panel (1) is provided with a small plate through hole (1a), a small panel (2) which can be turned and retracted is arranged in the small plate through hole (1a), the front surface of the small panel (2) is provided with a plurality of front surface cutters (3a), and the back surface of the small panel is provided with a plurality of back surface cutters (3 b). The cutter head can be used for changing cutters under normal pressure and under pressure, the cutter changing operation is simple, the time is short, the efficiency is high, and the tunneling cost is reduced; especially, the cutter changing is carried out under pressure, the operation time of an operator in the pressurizing bin is obviously shortened, the damage of a high-pressure environment to a human body is greatly reduced, the risk of damage to the human body caused by air leakage, water burst and sand burst is also obviously reduced, and the safety of the cutter changing operation is improved.
Description
Technical Field
The utility model relates to a shield constructs quick-witted part, especially relates to a shield constructs quick-witted blade disc.
Background
At present, in China, urban subway tunnels and tunnels of urban comprehensive pipe galleries are usually constructed by adopting a shield machine. When the shield machine is pushed, the cutter head at the front end rotates to drive the cutter on the cutter head to dig the stratum soil body, so that the tunnel is excavated. When the shield machine is used for tunneling, the stability of an excavation surface must be kept. The muddy water type shield machine is characterized in that a muddy water chamber is formed between a cutter head of the muddy water type shield machine and the excavation surface, and the muddy water chamber is filled with pressurized muddy water or mud (usually bentonite suspension) so that the pressure of the muddy water chamber is balanced with the pressure of the excavation surface to stabilize the excavation surface; the other is the earth pressure balance type shield machine, which takes earth materials (adding foam and the like to improve the soil if necessary) as media for stabilizing the excavation surface, a soil chamber is formed between a partition plate behind a cutter head and the excavation surface, the cutter head rotates to excavate to increase the earth materials, then the spiral feeder rotates to convey the earth materials, and the pressure of the soil chamber is balanced with the pressure of the excavation surface by adjusting the rotating excavation speed of the cutter head and the earth output amount (rotating speed) of the spiral feeder, so that the stability of the excavation surface is realized.
Meanwhile, the cutters arranged and used on the cutter head of the shield tunneling machine are different according to different stratum geological conditions. When the shield tunnel passes through the stratum change section, different cutters need to be replaced so as to ensure the smooth, reliable and efficient tunneling of the shield machine; after the tool is worn, the same tool needs to be replaced by a new tool.
The shield machine carries out the change of cutter in the stratum tunnelling process, and there is two kinds of modes of ordinary pressure tool changing and area pressure tool changing at present. Changing the tool at normal pressure: the stability (no collapse) of the soil body in front of the tunnel face (excavation face) needs to be kept, if the geological condition at the stop position is good and the soil body in front can be self-stabilized, the soil can directly enter a soil bin (an emptied muddy water chamber or a soil chamber) for cutter replacement without adding extra auxiliary measures; if the geological conditions at the shutdown are poor and the front soil body is difficult to self-stabilize, the soil body on the face needs to be reinforced in advance to maintain the stability of the soil body in the front of the face, even precipitation treatment needs to be carried out in advance under the condition of abundant underground water, so that the working procedures are more, and the delay period is longer. Changing the tool under pressure: the tool changing under pressure is to inject compressed air into the soil bin to increase the air pressure of the soil bin, so that the air pressure is balanced with the soil pressure and water pressure borne by the face (excavation face) of the tunnel to keep the stability of the soil body in front of the face of the tunnel; and then, the tool changing operator enters the pressurized soil bin to perform tool changing operation.
The cutter on the current blade disc all is independently installed on the panel of blade disc separately, and its problem that exists is: no matter the cutter is changed under normal pressure or under pressure, all the cutters needing to be changed need to be manually disassembled and assembled one by one on the back of the cutter head, the operation is very troublesome, and the cutter changing time is as long as several hours; the tunneling efficiency is reduced, and the tunneling cost is increased. For the tool changing under pressure, the more serious problem exists: operators need to stay in the pressurized soil bin for a long time, and due to the fact that the factors influencing the air tightness of the soil bin are more and not all controllable, the operators are prone to tinnitus and chest distress, so that the operators are harmful to the bodies, even the operators are life-threatening if sudden serious air leakage occurs, and safety accidents occur; meanwhile, sudden soil body instability can cause personal injury due to water and sand gushing.
SUMMERY OF THE UTILITY MODEL
The invention aims at providing a shield tunneling machine cutter head convenient for replacing cutters, the cutter head can be used for changing cutters under normal pressure and under pressure, the cutter changing operation is simple, the time is short, the efficiency is high, and the tunneling cost is reduced; especially, the cutter changing is carried out under pressure, the operation time of an operator in the pressurizing bin is obviously shortened, the damage of a high-pressure environment to a human body is greatly reduced, the risk of damage to the human body caused by air leakage, water burst and sand burst is also obviously reduced, and the safety of the cutter changing operation is improved.
The utility model discloses realize that the technical scheme that its invention purpose adopted is, a shield constructs quick-witted blade disc convenient to change cutter, the cutter of the front installation of panel, panel including the blade disc, its characterized in that:
the panel is provided with a small plate through hole, a small panel which can be overturned and retracted is arranged in the small plate through hole, the front surface of the small panel is provided with a plurality of front surface cutters, and the back surface of the small panel is provided with a plurality of back surface cutters.
The specific structure of the small panel which can be overturned and retracted and is arranged in the small plate through hole is as follows: two ends of a rotating shaft of the small panel are inserted into the front end of a shaft groove of the wall of the small through hole; the direction of the shaft groove is vertical to the panel, and a jack for propping against the rotating shaft is arranged in the shaft groove behind the rotating shaft; one end of the hydraulic telescopic bolt is inserted into the pin hole of the small panel, and the other end of the hydraulic telescopic bolt is inserted into the front end of the pin hole in the side wall of the small plate through hole.
Or the specific structure of the small panel which can be overturned and retracted and is arranged in the small plate through hole is as follows: two ends of a rotating shaft of the small panel are inserted into the front end of a shaft groove of the wall of the small through hole; the direction of the shaft groove is vertical to the panel, and a first locking screw for propping against the rotating shaft is arranged in the shaft groove behind the rotating shaft; one end of the bolt is inserted into the pin hole of the small panel, the other end of the bolt is inserted into the front end of the through groove in the side wall of the small panel through hole, the direction of the through groove is perpendicular to the panel, and a second locking screw for abutting against the bolt is arranged in the through groove in the rear of the bolt.
The utility model discloses a tool changing operation method of blade disc does:
when the shield machine performs shield operation and needs to pass through different stratum geological sections, the front cutter and the back cutter on the small panel of the shield machine are different, the front cutter is suitable for geological conditions of front section operation, and the back cutter is suitable for geological conditions of rear section operation. And when the shield operation does not need to pass through the stratum change section, the front cutter and the back cutter are the same.
For the first small panel, the tool changing operation steps are as follows: an operator enters the soil bin to release the liquid of the hydraulic telescopic bolt, the hydraulic telescopic bolt is shortened, the end part of the bolt exits from the pin hole of the small panel, then the ejector rod of the jack behind the rotating shaft in the shaft groove retracts, then the small panel is pulled backwards along the shaft groove, and the backward pulling distance is not less than the turning radius of the small panel; then, the small panel is rotated to turn over 180 degrees along the rotating shaft, the front side cutter and the back side cutter are exchanged, then the rotating shaft of the small panel is pushed back to the front end of the shaft groove, and the jack is operated to enable the ejector rod to extend out to abut against the rotating shaft; and injecting liquid into the hydraulic telescopic plug pin to extend the hydraulic telescopic plug pin, and re-inserting the end part of the plug pin into the pin hole of the small panel to finish the tool changing operation of interchanging the front tool and the back tool.
For the second small panel, the tool changing operation steps are as follows: an operator enters the soil bin, the locking screw I and the locking screw II are detached, the rotating shaft of the small panel retreats along the shaft groove, meanwhile, the bolt of the small panel retreats along the through groove, and the distance of the small panel retreating backwards is not less than the overturning distance of the panel; then, turning the small panel for 180 degrees, and exchanging the front cutter and the back cutter; and then, the rotating shaft of the small panel after being turned over is pushed to the front end of the shaft groove, the plug pin returns to the front end of the through groove, and the locking screw I and the locking screw II are replaced, so that the tool changing operation of interchanging the front tool and the back tool is completed.
Compared with the prior art, the beneficial effects of the utility model are that:
firstly, the utility model only needs to carry out the pressure relief of the hydraulic telescopic bolt, the retraction of the jack rod, the turnover of the small panel, the pressurization of the hydraulic telescopic bolt and the retraction of the jack; or unlocking the bolt and the rotating shaft, turning the small panel and locking the bolt and the rotating shaft; the replacement of a plurality of cutters on the same small panel can be completed at one time. Compared with the manual operation of carrying out complicated dismounting and mounting operations on the cutters arranged in front of the cutter head on the back of the cutter head, the operation is very simple, and the cutter changing time of the whole cutter head is shortened by more than 10 times; the tunneling efficiency of the shield tunneling machine is improved, the construction period is shortened, and the construction cost is reduced.
Two, use the utility model discloses when taking the area to press the tool changing, the operating time of operation personnel in the storehouse that pressurizes obviously shortens, when having improved tunnelling efficiency, has reduced high-pressure environment to the injury of human body more by a wide margin, also obviously reduced gas leakage, gush water, gush sand and cause the risk of damage, emergence accident to the human body, improved the security of tool changing operation.
Further, the utility model discloses a telescopic bolt of hydraulic pressure comprises hydraulic pressure cavity and the round pin axle of registrate on hydraulic pressure cavity.
The hydraulic telescopic bolt with the jack structure has a mature and simple structure, and can conveniently and simply realize the extension and the shortening of the bolt; but also can reliably and firmly realize the positioning and connection of the small panel and the panel.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a shield tunneling machine cutter head according to an embodiment of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic back structure view of the small panels according to the first and second embodiments of the present invention.
Fig. 4 is a sectional view taken along line B-B in fig. 1.
Fig. 5 is a schematic structural view of a shield tunneling machine cutter head according to a second embodiment of the present invention.
Fig. 6 is a cross-sectional view taken along line C-C of fig. 5.
Fig. 7 is a cross-sectional view taken along line D-D in fig. 5.
Detailed Description
The first embodiment is as follows:
fig. 1 to 4 show that, a specific embodiment of the present invention is: the utility model provides a shield constructs quick-witted blade disc convenient to change cutter, includes the panel 1 of blade disc, the cutter of the front installation of panel 1, its characterized in that:
the panel 1 is provided with a small plate through hole 1a, a small panel 2 which can be overturned and retracted is arranged in the small plate through hole 1a, the front surface of the small panel 2 is provided with a plurality of front surface cutters 3a, and the back surface of the small panel is provided with a plurality of back surface cutters 3 b.
Fig. 2 and 4 show that the specific structure of the small plate through hole 1a of the present example for installing the small plate 2 which can be overturned and retracted is as follows: two ends of a rotating shaft 4 of the small panel 2 are inserted into the front end of a shaft groove 4a of the wall of the small plate through hole 1 a; the direction of the shaft groove 4a is vertical to the panel 1, and a jack 4b which is propped against the rotating shaft 4 is arranged in the shaft groove 4a behind the rotating shaft 4; one end of the hydraulic telescopic bolt 5 is inserted into the pin hole of the small panel 2, and the other end is inserted into the front end of the pin hole on the side wall of the small plate through hole 1 a.
Fig. 2 shows that the hydraulic telescopic bolt 5 of this example is composed of a hydraulic chamber 5a and a pin 5b sleeved on the hydraulic chamber 5 a.
Example two:
fig. 5-7 and fig. 3 show that another embodiment of the present invention is: the utility model provides a shield constructs quick-witted blade disc convenient to change cutter, includes the panel 1 of blade disc, the cutter of the front installation of panel 1, its characterized in that:
the panel 1 is provided with a small plate through hole 1a, a small panel 2 which can be overturned and retracted is arranged in the small plate through hole 1a, the front surface of the small panel 2 is provided with a plurality of front surface cutters 3a, and the back surface of the small panel is provided with a plurality of back surface cutters 3 b.
Fig. 6-7 show that the specific structure of the small plate through hole 1a for installing the small plate 2 which can be overturned and retracted is as follows: two ends of a rotating shaft 4 of the small panel 2 are inserted into the front end of a shaft groove 4a of the wall of the small plate through hole 1 a; the direction of the shaft groove 4a is vertical to the panel 1, and a locking screw I4 c which is propped against the rotating shaft 4 is arranged in the shaft groove 4a behind the rotating shaft 4; one end of the bolt 6 is inserted into the pin hole of the small panel 2, the other end of the bolt is inserted into the front end of the through groove 6a on the side wall of the small panel through hole 1a, the direction of the through groove 6a is vertical to the panel 1, and a locking screw II 6b which is propped against the bolt 6 is arranged in the through groove 6a behind the bolt 6.
The utility model discloses when implementing, front cutter 3a and back cutter 3b also can be for the same cutter, are applicable to the shield structure operation and need not pass through the shield structure machine adoption of stratum change section.
Claims (4)
1. The utility model provides a shield constructs quick-witted blade disc convenient to change cutter, includes panel (1) of blade disc, the cutter of the front installation of panel (1), its characterized in that:
the panel (1) is provided with a small plate through hole (1a), a small panel (2) which can be turned and retracted is arranged in the small plate through hole (1a), the front surface of the small panel (2) is provided with a plurality of front surface cutters (3a), and the back surface of the small panel is provided with a plurality of back surface cutters (3 b).
2. The shield tunneling machine cutterhead convenient for cutter replacement according to claim 1, wherein: the specific structure of the small panel (2) which can be overturned and retracted and is arranged in the small plate through hole (1a) is as follows: two ends of a rotating shaft (4) of the small panel (2) are inserted into the front end of a shaft groove (4a) of the wall of the small plate through hole (1 a); the direction of the shaft groove (4a) is vertical to the panel (1), and a jack (4b) which is pressed against the rotating shaft (4) is arranged in the shaft groove (4a) behind the rotating shaft (4); one end of the hydraulic telescopic bolt (5) is inserted into the pin hole of the small panel (2), and the other end of the hydraulic telescopic bolt is inserted into the front end of the pin hole in the side wall of the small plate through hole (1 a).
3. The shield tunneling machine cutterhead convenient for cutter replacement according to claim 2, wherein: the hydraulic telescopic bolt (5) consists of a hydraulic cavity (5a) and a pin shaft (5b) sleeved on the hydraulic cavity (5 a).
4. The shield tunneling machine cutterhead convenient for cutter replacement according to claim 1, wherein: the specific structure of the small panel (2) which can be overturned and retracted and is arranged in the small plate through hole (1a) is as follows: two ends of a rotating shaft (4) of the small panel (2) are inserted into the front end of a shaft groove (4a) of the wall of the small plate through hole (1 a); the direction of the shaft groove (4a) is vertical to the panel (1), and a locking screw I (4c) which is pressed against the rotating shaft (4) is arranged in the shaft groove (4a) at the rear of the rotating shaft (4); one end of the bolt (6) is inserted into a pin hole of the small panel (2), the other end of the bolt is inserted into the front end of the through groove (6a) on the side wall of the small panel through hole (1a), the direction of the through groove (6a) is vertical to the panel (1), and a second locking screw (6b) which is abutted against the bolt (6) is arranged in the through groove (6a) at the rear of the bolt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120941166.9U CN214660184U (en) | 2021-05-06 | 2021-05-06 | Shield constructs quick-witted blade disc convenient to change cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120941166.9U CN214660184U (en) | 2021-05-06 | 2021-05-06 | Shield constructs quick-witted blade disc convenient to change cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660184U true CN214660184U (en) | 2021-11-09 |
Family
ID=78473953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120941166.9U Expired - Fee Related CN214660184U (en) | 2021-05-06 | 2021-05-06 | Shield constructs quick-witted blade disc convenient to change cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062745A (en) * | 2021-05-06 | 2021-07-02 | 深圳地铁建设集团有限公司 | Shield constructs quick-witted blade disc convenient to change cutter |
-
2021
- 2021-05-06 CN CN202120941166.9U patent/CN214660184U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062745A (en) * | 2021-05-06 | 2021-07-02 | 深圳地铁建设集团有限公司 | Shield constructs quick-witted blade disc convenient to change cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211109 |