CN111396069B - Shield machine front shield with long service life - Google Patents
Shield machine front shield with long service life Download PDFInfo
- Publication number
- CN111396069B CN111396069B CN202010148034.0A CN202010148034A CN111396069B CN 111396069 B CN111396069 B CN 111396069B CN 202010148034 A CN202010148034 A CN 202010148034A CN 111396069 B CN111396069 B CN 111396069B
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- Prior art keywords
- shield
- shield machine
- machine front
- life
- mounting
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- 230000000670 limiting effect Effects 0.000 claims abstract description 34
- 230000005641 tunneling Effects 0.000 claims abstract description 8
- 239000004519 grease Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 description 13
- 230000002035 prolonged effect Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 210000005056 cell body Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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
- E21D9/087—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 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)
- 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 application discloses a shield machine front shield with long service life, which comprises a shield machine front shield body, wherein one side of the shield machine front shield body is provided with a plurality of first cutter head mounting bins, a plurality of second cutter head mounting bins are arranged on the circumferential direction of the shield machine front shield body, a plurality of mounting seats are arranged on the circumferential direction of the shield machine front shield body, a plurality of limiting blocks are arranged on the front shield body of the shield tunneling machine in the circumferential direction, one side of the mounting seat close to the limiting blocks is provided with a mounting sleeve, a telescopic cavity is arranged in the mounting sleeve, a piston is arranged in the telescopic cavity, a piston shaft is arranged on one side of the piston close to the limiting block, one side of the piston shaft close to the limiting block is provided with a telescopic sleeve which extends and retracts along the telescopic cavity, the telescopic tube is fixed on the limiting block, a spring is arranged in the telescopic cavity, and the spring is sleeved on the periphery of the piston. The shield machine front shield has long service life.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to a shield machine front shield with long service life.
Background
A shield machine is a tunnel boring machine using a shield method. The shield construction method is a "shield" (referred to as a supporting segment) for constructing (laying) a tunnel while a heading machine is heading, and is different from an open construction method. The shield mainly comprises a front shield, a middle shield and a tail shield, which are all tubular cylinders, and the outer diameter of each tubular cylinder is 6.25 m. The shield machine front shield is also a part with the largest pressure and a part with the largest loss in the tunneling process of the shield machine, the service life of the shield machine is mainly influenced by the shield machine front shield, and therefore the development of the shield machine front shield with long service life is urgently needed to solve the problems in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a shield machine front shield with long service life.
The technical scheme adopted by the invention is as follows:
the utility model provides a long service life's shield constructs quick-witted shield, includes shield constructs quick-witted shield body, one side of shield constructs quick-witted shield body is equipped with a plurality of first sword installation storehouses, be equipped with a plurality of second tool bit installation storehouses in the week of shield constructs quick-witted shield body, be equipped with a plurality of mount pads in the week of shield constructs quick-witted shield body, be equipped with a plurality of stoppers in the week of shield constructs quick-witted shield body, one side that the mount pad is close to the stopper is equipped with the installation sleeve, be equipped with flexible chamber in the installation sleeve, the piston is installed to flexible intracavity, the piston is close to one side of stopper and installs the piston shaft, one side that the piston shaft is close to the stopper is equipped with the telescope tube, the telescope tube is flexible along flexible intracavity, the telescope tube is fixed on the stopper, be equipped with the spring in the flexible intracavity, the spring cup.
In the embodiment of the invention, one side of the limiting block is provided with a plurality of grooves.
In the embodiment of the invention, the depth of the groove is 30-50 cm.
In the embodiment of the invention, a plurality of bulges are arranged on one side of the mounting seat, which is far away from the front shield body of the shield tunneling machine.
In the embodiment of the invention, the shield machine front shield body is provided with the grease feeding groove, and the shield machine front shield body is internally provided with the third oil guide cavity channel communicated with the first cutter head mounting bin.
In the embodiment of the invention, a first groove body and a second groove body are respectively arranged on two side walls of the third oil guide cavity channel.
In the embodiment of the invention, a first oil guide cavity channel communicated with a telescopic cavity is arranged in the shield body of the shield machine.
In the embodiment of the invention, a limiting groove is arranged in the mounting seat, a sealing ring is arranged in the limiting groove, a second oil guide cavity channel communicated with the first oil guide cavity channel is arranged in the front shield body of the shield machine, the second oil guide cavity channel is communicated with the limiting groove, an oil outlet hole is arranged on the mounting seat, an oil outlet cavity channel communicated with the oil outlet hole is arranged in the mounting seat, and the oil outlet cavity channel is communicated with the limiting groove.
The invention has the beneficial effects that: during the use, the installation of tool bit is realized respectively in first tool bit installation storehouse and the installation of second tool bit storehouse, at the rotatory in-process of shield structure machine shield body, the mount pad bears the main tunnelling pressure that comes from shield structure machine shield body periphery soil layer, and utilize the parcel of stopper to alleviate the tunnelling pressure that the shield structure machine shield body received simultaneously, and stretch out and draw back in the piston through the piston shaft, and realize that the telescope tube is flexible at flexible intracavity, the flexible extrusion spring of telescope tube, realize the buffering by the flexible of spring, and then effectively realized the effective spacing of stopper and the absorbing effect of buffering, and then effectively prolonged the life of shield structure machine shield body.
Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a long-life shield machine anterior shield of the present invention;
FIG. 2 is a side view of a long-life shield machine front shield according to the present invention;
FIG. 3 is an enlarged partial schematic view at A in FIG. 2;
FIG. 4 is a front view of a long-life shield machine front shield according to the present invention;
fig. 5 is a sectional view showing the matching of the mounting sleeve and the telescopic sleeve in the shield machine anterior shield with long service life.
The figures are numbered:
1. a front shield body of the shield machine; 2. a first knife head mounting bin; 3. the second tool bit mounting bin; 4. a grease feed chute; 5. a limiting block; 6. a mounting seat; 7. a protrusion; 8. an oil outlet hole; 9. installing a sleeve; 10. a telescopic sleeve; 11. a groove; 12. a third oil guide cavity channel; 13. a second tank body; 14. a first tank body; 15. a seal ring; 16. a second oil guide cavity channel; 17. an oil outlet cavity; 18. a first oil guide cavity channel; 19. a piston; 20. a piston shaft; 21. a telescoping chamber; 22. a spring; 23. a limiting groove.
Detailed Description
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
In the following description, the appearances of the indicating orientation or positional relationship such as the terms "inner", "outer", "upper", "lower", "left", "right", etc. are only for convenience in describing the embodiments and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
As shown in fig. 1-5, an embodiment of the present invention provides a shield machine front shield with a long service life, including a shield machine front shield body 1, wherein one side of the shield machine front shield body 1 is provided with a plurality of first tool bit mounting bins 2, a plurality of second tool bit mounting bins 3 are circumferentially arranged on the shield machine front shield body 1, a plurality of mounting seats 6 are circumferentially arranged on the shield machine front shield body 1, a plurality of limiting blocks 5 are circumferentially arranged on the shield machine front shield body 1, a mounting sleeve 9 is arranged on one side of the mounting seats 6 close to the limiting blocks 5, a telescopic cavity 21 is arranged in the mounting sleeve 9, a piston 19 is arranged in the telescopic cavity 21, one side of the piston 19 close to the limiting blocks 5 is provided with a piston shaft 20, one side of the piston shaft 20 close to the limiting blocks 5 is provided with a telescopic sleeve 10, the telescopic sleeve 10 is telescopic along the telescopic cavity 21, the telescopic sleeve 10 is fixed on the limiting blocks 5, a spring 22 is arranged in the telescopic cavity 21, and the spring 22 is sleeved on the periphery of the piston 19. During the use, the installation of the cutter head is respectively realized by the first cutter head installation bin 2 and the second cutter head installation bin 3, in the rotating process of the shield machine front shield body 1, the installation seat 6 bears the main tunneling pressure from the peripheral soil layer of the shield machine front shield body 1, the tunneling pressure on the shield machine front shield body 1 is reduced by the aid of the wrapping of the limiting block 5, the telescopic sleeve 10 stretches in the telescopic cavity 21 through stretching of the piston shaft 20 in the piston 19, the telescopic extrusion spring 22 of the telescopic sleeve 10 is buffered by the stretching of the spring 22, the effect of effective limiting and buffering and shock absorption on the limiting block 5 is effectively realized, and the service life of the shield machine front shield body 1 is effectively prolonged.
In this embodiment, one side of the limiting block 5 is provided with a plurality of grooves 11. Through establishing a plurality of recesses 11 in one side of stopper 5, recess 11 can effectively reduce the area of contact of stopper 5 with the soil layer, has reduced the pressure of stopper 5 when shield constructs quick-witted anterior shield body 1 and has tunnelled, and then has prolonged stopper 5's life, has further prolonged the life of shield constructs quick-witted anterior shield body 1.
In this embodiment, the depth of the groove 11 is 30-50 cm. Specifically to in this embodiment, the degree of depth of recess 11 is 30cm, so set up, can reduce the area of contact of stopper 5 with the soil layer, has effectively prolonged stopper 5's life, and then has prolonged the life of shield structure machine anterior shield body 1.
In this embodiment, a plurality of protrusions 7 are arranged on one side of the mounting seat 6 away from the front shield body 1 of the shield tunneling machine. A plurality of bulges 7 are arranged on one side of the mounting seat 6 far away from the shield machine front shield body 1, so that the contact area between the mounting seat 6 and the peripheral soil layer of the shield machine front shield body 1 can be increased by the bulges 7, the tunneling pressure of the shield machine front shield body 1 is reduced, and the service life of the shield machine front shield body 1 is prolonged.
In this embodiment, a grease feed chute 4 is arranged on the shield machine front shield body 1, and a third oil guide channel 12 communicated with the first cutter head mounting bin 2 is arranged in the shield machine front shield body 1. Through establish grease feed chute 4 on shield structure machine front shield body 1, grease passes through grease feed chute 4 and enters into third oil guide cavity way 12, and the rethread third oil guide cavity way 12 enters into first sword head installation bin 2, realizes lubricating the tool bit in first sword head installation bin 2, and then has effectively prolonged the life-span of tool bit use.
In this embodiment, two side walls of the third oil guide channel 12 are respectively provided with a first groove body 14 and a second groove body 13. Through establish first cell body 14 and second cell body 13 respectively at the both sides wall of third oil guide channel 12, can be to the deceleration effect of grease by first cell body 14 and second cell body 13, and then improved the lubricated effect of grease.
In this embodiment, a first oil guide channel 18 communicating with the telescopic cavity 21 is arranged in the shield body 1 of the shield machine. Through establishing in shield structure machine front shield body 1 and leading the oil chamber way 18 with the first of flexible chamber 21 intercommunication, first leading oil chamber way 18 is transmitted the grease to flexible chamber 21 in through first leading oil passageway, realizes the lubrication action to piston shaft 20 and spring 22 to realized meeting when the rock layer produces the striking when stopper 5, the impact can effectively be absorbed by spring 22 this moment, and prolong the life of stopper 5.
In this embodiment, be equipped with spacing groove 23 in the mount pad 6, be equipped with sealing washer 15 in the spacing groove 23, be equipped with in the shield constructs the machine front shield body 1 and lead the second oil chamber way 16 with first oil chamber way 18 intercommunication, the second is led oil chamber way 16 and is linked together with spacing groove 23, be equipped with oil outlet 8 on the mount pad 6, be equipped with in the mount pad 6 and lead oil chamber way 17 with oil outlet 8 intercommunication, oil outlet chamber way 17 and spacing groove 23 intercommunication. The limiting groove 23 is arranged in the mounting seat 6, the sealing ring 15 is arranged in the limiting groove 23, the sealing ring 15 blocks external soil and sand, grease is conveyed into the second oil guide cavity channel 16 through the first oil guide cavity channel 18, the sealing ring 15 is wrapped by the grease, the oil sealing effect on the sealing ring 15 is achieved, and the blocking effect on the soil and sand is further improved.
It will be appreciated that the depth of the groove 11 may also be 30cm, 31cm, 32cm, 33cm, 34cm, 36cm, 37cm, 38cm, 39cm, 40cm, 41cm, 42cm, 43cm, 44cm, 45cm, 46cm, 47cm, 48cm, 49cm, 50cm etc.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (8)
1. A shield machine front shield with long service life is characterized by comprising a shield machine front shield body, a plurality of first cutter head mounting bins are arranged on one side of the shield body of the shield machine, a plurality of second cutter head mounting bins are arranged on the circumference of the shield body of the shield machine, a plurality of mounting seats are arranged on the circumferential direction of the shield machine front shield body, a plurality of limiting blocks are arranged on the circumferential direction of the shield machine front shield body, one side of the mounting seat close to the limiting block is provided with a mounting sleeve, a telescopic cavity is arranged in the mounting sleeve, a piston is arranged in the telescopic cavity, a piston shaft is arranged at one side of the piston close to the limiting block, one side of the piston shaft close to the limiting block is provided with a telescopic sleeve which extends and retracts along the telescopic cavity, the telescopic tube is fixed on the limiting block, a spring is arranged in the telescopic cavity, and the spring is sleeved on the periphery of the piston.
2. The long-life shield machine anterior shield of claim 1, wherein one side of said limiting block is provided with a plurality of grooves.
3. The long-life shield machine foreshield of claim 2, wherein said grooves have a depth of 30-50 cm.
4. The long-life shield machine foreshield of claim 1, wherein a plurality of projections are provided on a side of said mounting seat away from the shield machine foreshield body.
5. The long-service-life shield machine front shield according to claim 1, wherein a grease feed chute is arranged on the shield machine front shield body, and a third grease guide channel communicated with the first tool bit mounting bin is arranged in the shield machine front shield body.
6. The long-service-life anterior shield of a shield tunneling machine according to claim 5, wherein a first groove body and a second groove body are respectively arranged on two side walls of the third oil guide channel.
7. The long-service-life shield machine anterior shield of claim 1, wherein a first oil guide cavity channel communicated with the telescopic cavity is arranged in the shield machine anterior shield body.
8. The long-life shield machine front shield of claim 1, wherein a limiting groove is formed in the mounting seat, a sealing ring is formed in the limiting groove, a second oil guide channel communicated with the first oil guide channel is formed in the shield machine front shield body, the second oil guide channel is communicated with the limiting groove, an oil outlet is formed in the mounting seat, an oil outlet channel communicated with the oil outlet is formed in the mounting seat, and the oil outlet channel is communicated with the limiting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148034.0A CN111396069B (en) | 2020-03-05 | 2020-03-05 | Shield machine front shield with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148034.0A CN111396069B (en) | 2020-03-05 | 2020-03-05 | Shield machine front shield with long service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111396069A CN111396069A (en) | 2020-07-10 |
| CN111396069B true CN111396069B (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010148034.0A Active CN111396069B (en) | 2020-03-05 | 2020-03-05 | Shield machine front shield with long service life |
Country Status (1)
| Country | Link |
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| CN (1) | CN111396069B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3102774B2 (en) * | 1997-06-09 | 2000-10-23 | 川崎重工業株式会社 | Underground shield excavator |
| JP6238432B2 (en) * | 2013-07-22 | 2017-11-29 | 株式会社奥村組 | Cutter board of shield machine and shield machine equipped with the same |
| JP6423218B2 (en) * | 2014-09-22 | 2018-11-14 | 清水建設株式会社 | Roller cutter and manufacturing method thereof |
| CN207245710U (en) * | 2017-05-24 | 2018-04-17 | 中隧隧盾国际建设工程有限公司 | A kind of cutterhead of shield machine |
| CN208203275U (en) * | 2018-03-13 | 2018-12-07 | 天津城建隧道股份有限公司 | A kind of earth pressure balance shield machine cutterhead structure |
| CN109184717B (en) * | 2018-11-12 | 2020-06-05 | 浙江中铁工程装备有限公司 | Cutter head of shield machine |
-
2020
- 2020-03-05 CN CN202010148034.0A patent/CN111396069B/en active Active
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| Publication number | Publication date |
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| CN111396069A (en) | 2020-07-10 |
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