CN215292494U - Normal-pressure cutter barrel of shield machine - Google Patents

Abstract

The utility model discloses a shield constructs ordinary pressure sword section of thick bamboo of machine, ordinary pressure sword section of thick bamboo is including dismantling preceding barrel and the back barrel of connection, has set firmly the installation bulge loop on the back tip of preceding barrel and the preceding tip of back barrel among the two one of them, another person be provided with can with installation bulge loop complex bulge loop mounting hole, preceding barrel meets with back barrel along length direction sealedly, the installation bulge loop is inserted and is established in the bulge loop mounting hole, the outside week portion of installation bulge loop sets up sealedly between the bulge loop mounting hole. The utility model discloses a shield constructs ordinary pressure sword section of thick bamboo of machine adopts the sectional type structure, when carrying out the tool changing, can be successively take back barrel and preceding barrel out in proper order from outer barrel, after changing the cutter, can successively with preceding barrel and back barrel insert back outer barrel in proper order again, so, under the less condition in space, can realize the tool changing smoothly, compensate the not enough design defect in shield structure machine tool changing space.

Description

Normal-pressure cutter barrel of shield machine

Technical Field

The utility model relates to a shield constructs ordinary pressure sword section of thick bamboo of machine.

Background

The cutter is the indispensable part of shield structure machine when the tunnelling, and along with the continuous tunnelling of shield structure machine, the cutter is also constantly wearing and tearing, in order to guarantee the high-efficient tunnelling of shield structure machine and construction quality, need in time change the cutter, the tool changing device among the prior art, wherein the size of partial ordinary pressure sword section of thick bamboo is longer, nevertheless because the restriction of shield structure machine self structure for the cutter changing space is not enough at ordinary pressure sword section of thick bamboo rear portion, and ordinary pressure sword section of thick bamboo can't be followed and all pulled out in the outer barrel and the cutter is changed to the law.

Disclosure of Invention

The utility model aims at providing a shield constructs ordinary pressure sword section of thick bamboo of machine, this ordinary pressure sword section of thick bamboo can carry out tool changing work in less space.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a shield constructs ordinary pressure sword section of thick bamboo of machine, ordinary pressure sword section of thick bamboo is including dismantling preceding barrel and the back barrel of connection, the back tip of preceding barrel with set firmly the installation bulge loop on one of them of the preceding tip of back barrel two, another be provided with can with installation bulge loop complex bulge loop mounting hole, preceding barrel with back barrel meets along length direction sealedly, the installation bulge loop is inserted and is established in the bulge loop mounting hole, the outside week portion of installation bulge loop with set up sealedly between the bulge loop mounting hole.

Preferably, the outer diameters of the front cylinder and the rear cylinder are equal, the central lines of the front cylinder and the rear cylinder are coincident, and the outer diameter of the mounting convex ring is smaller than that of the front cylinder/the rear cylinder.

Preferably, the mounting convex ring is arranged at the front end of the rear cylinder, the convex ring mounting hole is arranged at the rear end of the front cylinder, the outer diameter of the mounting convex ring is smaller than that of the rear cylinder, the front end of the rear cylinder is provided with a bearing hole for the mounting convex ring to be inserted in a matching manner, the front end of the rear cylinder and the outer circumference of the mounting convex ring are fixedly connected through welding, and the rear end of the mounting convex ring and the inner circumference of the rear cylinder are fixedly connected through welding.

Preferably, the front cylinder body and the rear cylinder body are provided with a first sealing ring therebetween, the rear end of the front cylinder body is provided with a first sealing groove capable of accommodating the first sealing ring, the first sealing ring is sleeved on the mounting convex ring, and the first sealing ring abuts against the front end face of the rear cylinder body.

Preferably, a second sealing ring is further arranged between the front cylinder and the mounting convex ring, a second sealing groove capable of containing the second sealing ring is formed in the periphery of the outer side of the mounting convex ring, the second sealing ring abuts against the periphery of the inner side of the convex ring mounting hole, and the second sealing ring is located on the front side of the first sealing ring.

Preferably, a first fixing hole extending along the radial direction is formed in the rear end portion of the front cylinder, a second fixing hole extending along the radial direction is formed in the mounting convex ring, the first fixing hole is a counter bore, the first fixing hole and the second fixing hole are fixedly connected through a sealing screw, and the sealing bolt is located between the first sealing ring and the second sealing ring.

Furthermore, the inner side circumference of the convex ring mounting hole is provided with a protrusion extending along the length direction of the normal pressure knife cylinder, and the end part of the mounting convex ring is provided with a groove for the protrusion to be inserted in a matching manner.

Furthermore, a fixing plate is further arranged inside the front cylinder body and located in front of the convex ring mounting hole, and a threaded hole extending along the axial lead direction of the normal-pressure cutter cylinder is formed in the fixing plate.

Furthermore, a flange plate is fixedly arranged at the rear end part of the rear cylinder body, and a guide groove extending along the length direction of the normal pressure cutter cylinder is formed in the flange plate.

Further, a boss for mounting a cutter is arranged on the front end of the front cylinder, and a third sealing groove is formed in the front end of the front cylinder.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a shield constructs ordinary pressure sword section of thick bamboo of machine, including dismantling preceding barrel and the back barrel of connection, when carrying out the tool changing, can be successively take back barrel and preceding barrel out in proper order from outer barrel, after the change cutter, can successively with preceding barrel and back barrel insert back outer barrel in proper order again, so, under the less condition in space, can realize the tool changing smoothly, compensate the not enough design defect in shield structure machine tool changing space.

Drawings

Fig. 1 to fig. 34 are the structural schematic diagram of a specific embodiment of the normal pressure knife cylinder of the present invention, wherein this normal pressure knife cylinder is installed on the tool changer of the shield machine, and fig. 35 to fig. 45 are the specific structural schematic diagram of the normal pressure knife cylinder of the present invention, the following is specifically described for each drawing:

fig. 1 to 3 are exploded views of the tool changer, wherein fig. 2 is a side view of the tool changer of fig. 1 and fig. 3 is a top view of the tool changer of fig. 1;

fig. 4 to 7 are schematic diagrams showing the overall structure of the tool changer, wherein fig. 5 is a side view of the tool changer shown in fig. 4, fig. 6 is a top view of the tool changer shown in fig. 4, and fig. 7 is a sectional view of the tool changer shown in fig. 6 along the direction a-a;

fig. 8 to 12 are schematic structural views of the tool changer in a first tool changing state, wherein fig. 9 is a side view of the tool changer in fig. 8, fig. 10 is a sectional view of the tool changer in fig. 9 along the direction B-B, fig. 11 is a top view of the tool changer in fig. 8, and fig. 12 is a sectional view of the tool changer in fig. 11 along the direction C-C;

fig. 13 to 16 are exploded views showing the tool changer in a first tool changing state, in which fig. 15 is a top view of the tool changer in fig. 13, and fig. 16 is a sectional view of the tool changer in fig. 15 taken along the direction D-D;

fig. 17 to 20 are exploded views of the tool changer in an intermediate state between a first tool changing state and a second tool changing state, in which fig. 18 is a schematic view of the tool changer in fig. 17 with a part of the structure hidden, fig. 19 is a side view of the tool changer in fig. 18, and fig. 20 is a top view of the tool changer in fig. 18;

FIGS. 21 and 22 are exploded views of the tool changer in a second tool changing position, wherein FIG. 22 is a top view of the tool changer of FIG. 21;

fig. 23 to 27 are schematic views showing the overall structure of the tool changer in the second tool changing state, wherein fig. 24 is a structural view showing the inside of the tool changer in fig. 23, fig. 25 is a schematic view showing the tool changer in fig. 23 with a part of the structure hidden, fig. 26 is a top view of the tool changer in fig. 25, and fig. 27 is a sectional view of the tool changer in fig. 26 along the direction of E-E;

fig. 28 to 31 are schematic structural views of the tool changer in a second tool changing state, and the front normal pressure tool cylinder is completely pulled out from the outer cylinder, wherein fig. 29 is a schematic view of the tool changer in fig. 28 with a part of the structure hidden, fig. 30 is a side view of the tool changer in fig. 29, and fig. 31 is a top view of the tool changer in fig. 29;

fig. 32 to 34 are schematic structural views of a normal pressure knife cylinder and an outer cylinder body in the knife changing device, wherein fig. 33 is a top view of the knife changing device in fig. 32, and fig. 34 is a sectional view of the knife changing device in fig. 33 along the direction F-F;

FIG. 35 is a schematic three-dimensional structure of the atmospheric pressure knife cylinder of the present invention;

FIG. 36 is an exploded view of the atmospheric knife cylinder of FIG. 35;

fig. 37 and 38 are full sectional views of the atmospheric pressure knife cylinder of the present invention;

FIG. 39 is a sectional view of the atmospheric knife cylinder of FIG. 38 taken along the direction G-G;

FIG. 40 is an enlarged fragmentary view at H in FIG. 38;

FIG. 41 is an enlarged fragmentary view taken at I in FIG. 38;

fig. 42 is a full sectional view of the front cylinder of the atmospheric pressure knife cylinder of the present invention;

FIG. 43 is an enlarged fragmentary view taken at J in FIG. 42;

FIG. 44 is a full sectional view of the rear cylinder of the atmospheric pressure knife cylinder of the present invention;

FIG. 45 is an enlarged fragmentary view at K of FIG. 44;

wherein:

1. a cutter;

2. a normal pressure knife cylinder; 21. a front barrel; 211. a convex ring mounting hole; 212. a first seal groove; 213. a first fixing hole; 214. a protrusion; 215. a boss; 216. a third seal groove; 22. a rear cylinder body; 221. a second mounting hole; 222. a rear cover; 223. a flange plate; 224. a guide groove; 23. a fixing plate; 231. a threaded hole; 24. installing a convex ring; 241. a second seal groove; 242. a second fixing hole; 243. a groove; 25. a first seal ring; 26. a second seal ring; 27. a seal screw;

3. an outer cylinder; 31. a first mounting hole; 32. a shutter plate; 33. a pulp discharge port; 34. a ball valve; 35. controlling the oil cylinder;

4. changing a tool apron; 41. a front seat body; 42. a rear seat body; 421. a first seat body; 422. a second seat body; 43. a hollow interior cavity; 44. a through hole; 45. a connecting plate; 451. a second connection hole; 46. a guide projection;

5. a tool changing oil cylinder; 51. a telescopic rod; 511. a first connection hole; 52. a cylinder body;

6. a threaded rod;

7. a fixed seat; 71. and (4) a guide hole.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

In order to illustrate the specific structure and application scenario of the normal pressure knife cylinder of the shield machine of the present invention, in this embodiment, the knife changing device of the shield machine equipped with the normal pressure knife cylinder will be described as an example.

In the following, the terms of orientation such as "front" and "rear" are defined by referring to the position of the cutter when the cutter is mounted on the normal pressure cutter cylinder.

Referring to the drawings, the cutter changing device of the shield tunneling machine comprises a normal pressure cutter cylinder 2 for mounting a cutter 1 and an outer cylinder 3 arranged on the periphery of the outer side of the normal pressure cutter cylinder 2, wherein the normal pressure cutter cylinder 2 comprises a front cylinder 21 and a rear cylinder 22 which are detachably connected, a fixing plate 23 is arranged in the front cylinder 21, a threaded hole 231 extending in the front-back direction is formed in the fixing plate 23, the cutter 1 is detachably mounted at the front end part of the front cylinder 21, specifically, a boss 215 for mounting the cutter is arranged at the front end part of the front cylinder 21, a first mounting hole 31 penetrating in the front-back direction is formed in the outer cylinder 3, and the normal pressure cutter cylinder 2 can be slidably inserted into the first mounting hole 31 in the self length direction.

Specifically, as shown in fig. 35 to 45, one of the rear end portion of the front cylinder 21 and the front end portion of the rear cylinder 22 is fixedly provided with a mounting convex ring 24, the other is provided with a convex ring mounting hole 211 capable of being matched with the mounting convex ring 24, the front cylinder 21 and the rear cylinder 22 are in sealed contact along the length direction, the mounting convex ring 24 is inserted into the convex ring mounting hole 211, and the outer peripheral portion of the mounting convex ring 24 is in sealed contact with the convex ring mounting hole 211. The outer diameters of the front cylinder 21 and the rear cylinder 22 are equal and the center lines coincide, and the outer diameter of the mounting convex ring 24 is smaller than that of the front cylinder 21/the rear cylinder 22, as shown in fig. 37 and 38.

In this embodiment, referring to fig. 44 and 45, the mounting convex ring 24 is disposed at the front end of the rear cylinder 22, the convex ring mounting hole 211 is located at the rear end of the front cylinder 21, the outer diameter of the mounting convex ring 24 is smaller than that of the rear cylinder 22, in this embodiment, the front end of the rear cylinder 22 has a bearing hole for the mounting convex ring 24 to be inserted, the front end of the rear cylinder 22 and the outer circumference of the mounting convex ring 24 are fixedly connected by welding, the rear end of the mounting convex ring 24 and the inner circumference of the rear cylinder 22 are fixedly connected by welding, in other embodiments, the mounting convex ring 24 and the rear cylinder 22 may be integrally disposed, and this is not particularly limited.

Referring to fig. 38 and 40, a first sealing ring 25 is disposed between the front cylinder 21 and the rear cylinder 22, a first sealing groove 212 capable of accommodating the first sealing ring 25 is disposed at the rear end of the front cylinder 21, the first sealing ring 25 is sleeved on the mounting convex ring 24, and the first sealing ring 25 abuts against the front end surface of the rear cylinder 22, so that external slurry can be prevented from entering the inside of the normal pressure knife cylinder 2. Still be provided with second sealing washer 26 between preceding barrel 21 and the installation bulge loop 24, set up the second seal groove 241 that can hold second sealing washer 26 on the outside week portion of installation bulge loop 24, second sealing washer 26 supports and leans on the inboard week portion of bulge loop mounting hole 211, and second sealing washer 26 is located the front side of first sealing washer 25, and like this, first sealing washer 25 and second sealing washer 26 can form double seal, and sealed effect is better.

Referring to fig. 38, 40, 42 and 44, a first fixing hole 213 extending in the radial direction is formed in the rear end of the front cylinder 21, and a second fixing hole 242 extending in the radial direction is formed in the mounting convex ring 24, wherein the first fixing hole 213 is a countersunk hole, the second fixing hole 242 is a through hole with a thread, and the first fixing hole 213 and the second fixing hole 242 are fixedly connected by a sealing screw, that is, when the normal pressure knife cylinder 2 is inserted into the first mounting hole 31, the sealing screw 27 does not interfere with the insertion of the normal pressure knife cylinder, in this embodiment, the sealing screw 27 is located between the first sealing ring 25 and the second sealing ring 26.

Referring to fig. 36, the inner circumference of the convex ring mounting hole 211 is provided with a protrusion 214 extending along the length direction of the normal pressure knife cylinder, and the end of the mounting convex ring 24 is provided with a groove 243 into which the protrusion 214 is fittingly inserted, so that when the front cylinder 21 and the rear cylinder 22 are mounted, the protrusion 214 and the groove 243 are fitted to each other, so that the first fixing hole 213 and the second fixing hole 242 can be quickly aligned, thereby facilitating quick mounting, enhancing the torsional strength, and protecting the seal screw 27 to a certain extent.

Referring to fig. 38 and 41, the front end of the front cylinder 21 is further provided with a third seal groove 216, so that the normal pressure knife cylinder 2 and the first mounting hole 31 can form a tight fit, and when the shield tunneling machine is in normal operation or during knife changing, mud can be prevented from leaking to the rear of the normal pressure knife cylinder 2 through the first mounting hole 31.

Referring to fig. 1 to 34, the tool changer further includes a tool changing seat 4 and a tool changing cylinder 5 disposed at the rear side of the outer cylinder 3, the tool changing seat 4 has a front seat body 41 and a rear seat body 42 detachably connected to each other, the front end portion of the front seat body 41 is detachably connected to the rear end portion of the outer cylinder 3, the tool changing seat 4 has a hollow inner cavity 43 capable of accommodating the normal pressure cylinder 2, the tool changing cylinder 5 includes a telescopic rod 51 and a cylinder body 52, the telescopic rod 51 is connected to the rear end portion of the rear seat body 42, the cylinder body 52 is inserted into the normal pressure cylinder 2 along the front-rear direction, and the cylinder body 52 is detachably connected to the rear end portion of the normal pressure cylinder 2.

The rear cylinder 22 has a second mounting hole 221 for inserting the cylinder 52, and the cylinder 52 of the tool changing cylinder 5 is partially/completely located in the second mounting hole 221, so that the cylinder 52 does not occupy the space at the rear side of the normal pressure tool cylinder 2, in this embodiment, a rear cover 222 capable of plugging the second mounting hole 221 is further disposed on the rear end portion of the rear cylinder 22, as shown in fig. 1 to 3 and 32 to 34.

Referring to fig. 21 to 34, the tool changer further includes a threaded rod 6 capable of engaging with the threaded hole 231, and a fixing base 7 capable of being detachably connected to the rear end of the front seat 41, a guide hole 71 is formed in the fixing base 7, the threaded rod 6 is inserted into the guide hole 71 and engages with the threaded hole 231, and the threaded rod 6 can rotate along its axis and can drive the front cylinder 21 to move in the front-back direction when rotating.

The tool changer has a first tool changing state and a second tool changing state, when the tool changer is in the first tool changing state, the rear seat body 42 is connected with the front seat body 41, the telescopic rod 51 retracts relative to the cylinder body 52, the rear cylinder body 22 is positioned behind the first mounting hole 31, and the front cylinder body 21 is partially positioned in the first mounting hole 31; when the tool changer is in the second tool changing state, the rear cylinder 22 is separated from the front cylinder 21, the fixing seat 7 is connected with the front seat body 41, and the threaded rod 6 is matched with the threaded hole 231.

Referring to fig. 7, 10 and 12, the rear end of the rear seat 42 is provided with a through hole 44 through which the extending end of the telescopic rod 51 extends, the through hole 44 extends in the front-rear direction, the extending end of the telescopic rod 51 has a first connecting hole 511, the rear end of the rear seat 42 is provided with a connecting plate 45, the connecting plate 45 is provided with a second connecting hole 451 extending in the thickness direction of the connecting plate 45, and the first connecting hole 511 and the second connecting hole 451 are connected by a bolt.

Referring to fig. 1 to 3 and 13 to 15, the rear seat 42 has a first seat 421 and a second seat 422 detachably connected along the radial direction of the normal pressure knife cylinder 2, so that the rear seat 42 can be easily installed on/removed from the front seat 41 along the radial direction during the knife changing process, thereby avoiding the problem of insufficient space in the axial direction of the normal pressure knife cylinder 2. Wherein, all be provided with connecting plate 45 on first pedestal 421 and the second pedestal 422, two sets of connecting plate 45 parallel arrangement have the interval between two sets of connecting plates 45, and the end that stretches out of telescopic link 51 is located between two sets of connecting plates 45, when taking first pedestal 421 and second pedestal 422 off from the front pedestal 41 promptly, can follow back pedestal 42 with telescopic link 51 simultaneously and pull apart, and it is more convenient to operate. The rear end of the first seat 421 and the rear end of the second seat 422 are both provided with arc-shaped slots (not shown in the figure), and when the first seat 421 and the second seat 422 are connected, the two sets of arc-shaped slots form the through hole 44.

Referring to fig. 1, 13, 23, 25, 28, 29, 35 and 36, the tool changer seat 4 is further provided with a guide protrusion 46 extending in the front-back direction, the guide protrusion 46 is located on the inner peripheral portion of the tool changer seat 4, the rear end portion of the rear cylinder 22 is fixedly provided with a flange plate 223, the flange plate 223 is provided with a plurality of groups of guide grooves 224 extending in the length direction of the normal pressure tool cylinder, the guide protrusion 46 can be matched with the guide grooves 224, and the guide and limit functions are achieved in the tool changing process.

Still be provided with the flashboard 32 that can cut off first mounting hole 31 on the outer barrel 3, flashboard 32 radially extends along outer barrel 3, tool changing device still includes the control cylinder 35 that can control flashboard 32 and open/close, in this embodiment, flashboard 32 is provided with two sets ofly, the central line symmetric distribution of two sets of flashboards 32 relative first mounting hole 31, when two sets of flashboards 32 are along radially being close to the motion each other, flashboard 32 is closed, when keeping away from the motion each other, the flashboard is opened, control cylinder 35 is provided with a set of clamp plate (not shown in the figure) respectively along length direction's both ends, the clamp plate is pressed on flashboard 32, when control cylinder 35 contracts, thereby the clamp plate drives flashboard 32 motion and closes flashboard 32, when control cylinder 35 elongates, clamp plate pulling flashboard 32 is opened.

Still be provided with the thick liquid hole of arranging along the radial extension of outer barrel 3 on the outer barrel 3, arrange thick liquid hole and first mounting hole 31 intercommunication, arrange thick liquid hole and tool changing seat 4 and lie in the same one side of flashboard 32, still be provided with the ball valve 34 that can open/close row thick liquid hole 33 on the outer barrel 3, when flashboard 32 closed, open ball valve 34 and can arrange the mud that lies in the flashboard 32 rear side in the first mounting hole 31, when guaranteeing that ordinary pressure knife section of thick bamboo 2 is taken first mounting hole 31 out, mud can not flow from first mounting hole 31.

The following specifically describes the steps of the tool changing device with the normal pressure tool cylinder when changing tools:

(1) detaching the rear cover 222 from the normal pressure knife cylinder 2, connecting the cylinder body 52 of the knife changing cylinder 5 to the rear cylinder body 22, installing the front seat body 41 of the knife changing seat 4 to the rear end part of the outer cylinder body 3, extending the telescopic rod 51 from the cylinder body 52, connecting the extending end of the telescopic rod 51 to the rear end part of the rear seat body 42, and installing the rear seat body 42 to the rear end part of the front seat body 41, specifically referring to fig. 1 to 7, retracting the knife changing cylinder 5, moving the cylinder body 52 towards the extending end of the telescopic rod 51 until the telescopic rod 51 is completely retracted into the cylinder body 52, the cylinder body 52 driving the normal pressure knife cylinder 2 to move towards the knife changing seat 4, namely, backwards, closing the gate 32, and opening the ball valve 34, discharging the slurry in the first installation hole 31 at the rear side of the gate 32, specifically referring to fig. 8 to 12;

(2) separating the telescopic rod 51 from the rear seat body 42, detaching the rear seat body 42 from the front seat body 41, separating the rear cylinder 22 from the front cylinder 21, and detaching the tool changing cylinder 5 and the rear cylinder 22 together, wherein the rear cylinder 22 and the cylinder body 52 are always connected in the process, as shown in fig. 13 to 20;

(3) mounting the fixed seat 7 to the rear end of the front seat body 41, inserting the threaded rod 6 into the guide hole 71 and matching the threaded rod 6 with the threaded hole 231, rotating the threaded rod 6 to move the front cylinder 21 backwards along the first mounting hole 31 until the front cylinder 21 is removed from the first mounting hole 31, wherein in the process, the fixed seat 7 is always connected with the front seat body 41, and the threaded rod 6 is always matched with the threaded hole, which is specifically shown in fig. 21 to 31;

(4) detaching the front seat body 41 from the outer cylinder body 3, pulling the front seat body 41, the front cylinder body 21 and the cutter 1 out of the outer cylinder body 3, replacing the cutter 1, reinstalling the front seat body 41 on the outer cylinder body 3 after replacing the cutter 1, and reversely rotating the threaded rod 6 to reinsert the front cylinder body 21 into the first installation hole 31;

(5) the threaded rod 6 is disengaged from the threaded hole 231, the fixing seat 7 is detached from the front seat body 41, the ball valve 34 is closed, the rear cylinder body 22 is remounted to the rear end part of the front cylinder body 21, the rear cylinder body 22 is remounted to the front cylinder body 21, the telescopic rod 51 is connected with the rear seat body 42, the telescopic rod 51 of the tool changing cylinder 5 is extended relative to the cylinder body 52 after the flashboard 32 is opened until the normal pressure tool cylinder 2 is completely pushed into the first mounting hole 31, the telescopic rod 51 is separated from the rear seat body 42, the rear seat body 42 is detached from the front seat body 41, the front seat body 41 is detached from the outer cylinder body 3, and the tool changing cylinder 5 is detached from the rear cylinder body 22.

In conclusion, this use neotype normal pressure sword section of thick bamboo of shield structure machine has the preceding barrel 21 and the back barrel 22 of dismantling the connection, when changing the tool, can be successively take back barrel 22 and preceding barrel 21 out in proper order from outer barrel, after changing the cutter, can successively insert back in outer barrel 3 with preceding barrel 21 and back barrel 22 in proper order again, so, under the less condition in space, can realize the tool changing smoothly, compensate the insufficient design defect in shield structure machine tool changing space.

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

Claims (10)

1. The utility model provides a shield constructs ordinary pressure sword section of thick bamboo of machine which characterized in that: the normal pressure knife section of thick bamboo is including dismantling preceding barrel and the back barrel of connection, the back tip of preceding barrel with set firmly the installation bulge loop on the two of the preceding tip of back barrel, another be provided with can with installation bulge loop complex bulge loop mounting hole, preceding barrel with back barrel meets along length direction ground sealedly, the installation bulge loop is inserted and is established in the bulge loop mounting hole, the outside week portion of installation bulge loop with set up sealedly between the bulge loop mounting hole.

2. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 1, characterized in that: the outer diameters of the front barrel and the rear barrel are equal, the center lines of the front barrel and the rear barrel are overlapped, and the outer diameter of the mounting convex ring is smaller than that of the front barrel and the rear barrel.

3. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 2, characterized in that: the mounting convex ring is arranged at the front end part of the rear barrel, the convex ring mounting hole is arranged at the rear end part of the front barrel, the outer diameter of the mounting convex ring is smaller than that of the rear barrel, the front end part of the rear barrel is provided with a bearing hole for the mounting convex ring to be inserted in a matching way, the front end part of the rear barrel is fixedly connected with the periphery of the outer side of the mounting convex ring by welding, and the rear end part of the mounting convex ring is fixedly connected with the periphery of the inner side of the rear barrel by welding.

4. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 1, characterized in that: the front barrel and the rear barrel are provided with a first sealing ring, the rear end of the front barrel is provided with a first sealing groove capable of containing the first sealing ring, the first sealing ring is sleeved on the mounting convex ring, and the first sealing ring is abutted against the front end face of the rear barrel.

5. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 4, characterized in that: the front barrel body and the installation convex ring are further provided with a second sealing ring, a second sealing groove capable of containing the second sealing ring is formed in the periphery of the outer side of the installation convex ring, the second sealing ring abuts against the periphery of the inner side of the convex ring installation hole, and the second sealing ring is located on the front side of the first sealing ring.

6. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 5, characterized in that: the rear end part of the front cylinder body is provided with a first fixing hole extending along the radial direction, the mounting convex ring is provided with a second fixing hole extending along the radial direction, the first fixing hole is a counter bore, the first fixing hole and the second fixing hole are fixedly connected through a sealing screw, and the sealing screw is located between the first sealing ring and the second sealing ring.

7. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 1, characterized in that: the inner side circumference of the convex ring mounting hole is provided with a bulge extending along the length direction of the normal pressure knife cylinder, and the end part of the mounting convex ring is provided with a groove for the bulge to be inserted in a matching way.

8. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 1, characterized in that: the inner part of the front cylinder body is also provided with a fixed plate which is positioned in front of the convex ring mounting hole, and the fixed plate is provided with a threaded hole extending along the axial lead direction of the normal pressure knife cylinder.

9. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 1, characterized in that: the rear end part of the rear cylinder body is fixedly provided with a flange plate, and the flange plate is provided with a guide groove extending along the length direction of the normal pressure knife cylinder.

10. The atmospheric pressure cutter cylinder of the shield tunneling machine according to claim 1, characterized in that: the front end part of the front barrel is provided with a boss for mounting a cutter, and the front end part of the front barrel is also provided with a third sealing groove.

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