CN218150923U

CN218150923U - Double-mold shield constructs machine disc cutter locking device

Info

Publication number: CN218150923U
Application number: CN202222452268.1U
Authority: CN
Inventors: 李艳斌; 雍毅; 明超; 唐莉梅; 张中心
Original assignee: Wuhan Hengli Engineering Drilling Tool Co ltd; CCCC First Highway Xiamen Engineering Co Ltd
Current assignee: Wuhan Hengli Engineering Drilling Tool Co ltd; CCCC First Highway Xiamen Engineering Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-27
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a disc cutter anti-loosening device for a double-mold shield machine, belonging to the technical field of double-mold shield machines; it includes: the axial locking assembly comprises an axial locking stop block abutted with the hob, an axial locking top block abutted with a cutter head, an axial locking wedge block and a fastening unit, wherein two ends of the axial locking wedge block are respectively abutted with the axial locking stop block and the axial locking top block, and inclined planes abutted with each other are arranged between the axial locking stop block and the axial locking wedge block so as to lock the shaft end of the hob by applying axial abutting force to the axial locking wedge block; the fastening unit comprises an anti-loosening block and a fastening bolt, a connecting part protruding relative to the hob is arranged at the bottom of the axial locking stop block, the fastening bolt is connected with the bottom of the end cover through the connecting part, and the anti-loosening block is connected with the connecting part and the fastening bolt respectively. The utility model discloses can carry out the axial to the hobbing cutter spacing and prevent not hard up.

Description

Double-mold shield constructs machine disc cutter locking device

Technical Field

The utility model relates to a bimodulus shield constructs quick-witted technical field, especially relates to a bimodulus shield constructs machine disc cutter locking device.

Background

At present, the construction of tunnels is a main means for solving traffic congestion and hydraulic engineering. The shield machine is used as a tunneling device, and the excellent mountain-crossing and sea-crossing capability of the shield machine enables the first step to be a better choice than the second step in tunneling. The service life of the shield machine is closely related to the main force on the cutter head, namely the cutter.

The hob, the most common cutter on the shield machine cutterhead, functions to cut and strip rock from the face of the tunnel. At the propulsive in-process of shield structure machine, the hobbing cutter on the blade disc directly receives the reaction force who advances the face, because the geological conditions is complicated, the reaction force that the cutter can receive changes that does not stop can arouse cutter and briquetting locking device vibrations, at long-time propulsion in-process, thereby the locking bolt can become flexible and even drop out of efficacy. Once the locking device is loosened or failed, the damage of the disc cutter is accelerated rapidly, and even the disc cutter falls off, so that the shield tunneling machine cannot tunnel normally.

SUMMERY OF THE UTILITY MODEL

In view of this, a need exists to provide a disc cutter anti-loosening device for a dual-mode shield tunneling machine, so as to solve the problem that the existing shield tunneling machine disc cutter is difficult to lock.

The utility model provides a double-mold shield constructs machine dish sword locking device, including cutter box, hobbing cutter and be used for connecting the end cover of cutter box and hobbing cutter, still include axial locking Assembly, axial locking Assembly include with the axial locking dog of hobbing cutter butt, with axial locking kicking block, axial locking voussoir and the fastening unit of blade disc butt, the both ends of axial locking voussoir respectively with axial locking dog and axial locking kicking block butt, be equipped with the inclined plane of mutual butt between axial locking dog and the axial locking voussoir for through applying axial pressure to the axial locking voussoir and locking the axle head of hobbing cutter; the fastening unit comprises an anti-loosening block and a fastening bolt, the bottom of the axial locking stop block is provided with a connecting portion which is opposite to the protruding portion of the hob, the fastening bolt passes through the connecting portion and is connected with the bottom of the end cover, and the anti-loosening block is respectively connected with the connecting portion and the fastening bolt and used for blocking loosening of the fastening bolt.

Furthermore, a first through hole is formed in the axial locking ejector block, a counter bore is formed in one side, close to the axial locking wedge block, of the first through hole, and a bolt sequentially passes through the counter bore and the first through hole to be in threaded connection with a cutter head of the shield tunneling machine.

Further, axial locking subassembly still includes taut unit, taut unit includes tensioning bolt and tensioning block, tensioning block strides to be located the bottom setting of toolbox and with the toolbox butt, tensioning bolt warp tensioning block with axial locking voussoir connects soon, for the traction axial locking voussoir extrudees to both sides axial locking dog and axial locking kicking block.

Further, a bolt protecting sleeve is arranged at the end part of the tensioning bolt.

Furthermore, the bottom of the axial locking check block is provided with an abutting part deviating from the protruding hobbing cutter, and the abutting part abuts against the cutter head.

Furthermore, the anti-loosening block is provided with an anti-loosening hole and a second through hole, the anti-loosening hole is sleeved at the end part of the fastening bolt, and the bolt passes through the second through hole and is connected with the connecting part.

Furthermore, the anti-loosening holes are quincuncial holes, and can prevent the bolts from rotating automatically.

Furthermore, a double-stack self-locking washer is arranged inside the anti-loosening hole.

Further, the second through hole is a kidney-shaped hole.

Furthermore, the tool box further comprises a radial locking assembly, the radial locking assembly comprises a radial locking wedge block and a locking bolt, the radial locking wedge block is abutted to the side walls of the end cover and the tool box respectively, and the locking bolt is screwed with the radial locking wedge block through the tool box so as to form an inclined plane which is abutted to each other between the radial locking wedge block and the side part of the end cover to press the end cover.

Compared with the prior art, the utility model discloses the beneficial effect who has does:

(1) The utility model discloses a bimodulus shield constructs machine disc cutter locking device, be provided with axial locking Assembly, axial locking Assembly include with the axial locking dog of hobbing cutter butt, with the axial locking kicking block of blade disc butt, axial locking voussoir and fastening element, the both ends of axial locking voussoir respectively with axial locking dog and axial locking kicking block butt, be equipped with the inclined plane of mutual butt between axial locking dog and the axial locking voussoir, axial locking voussoir is when relative axial locking dog and axial locking kicking block remove, can apply the axle head that axial offset pressure comes locking hobbing cutter to the axial locking kicking block, lock the axial to the hobbing cutter, it is not hard up to prevent the hobbing cutter to take place the axial.

(2) The utility model discloses a bimodulus shield constructs machine disc cutter locking device, be provided with the fastening unit, the fastening unit is including anti-loosening block and fastening bolt, the bottom of axial locking dog is equipped with the outstanding connecting portion of relative hobbing cutter, fastening bolt passes connecting portion and is connected with the bottom of end cover, fastening bolt is with the monolithic stationary of axial locking dog on the end cover, prevent at the vibration in-process, axial locking dog takes place the displacement and shifts, make the butt inclined plane change, influence the axial pressure of supporting of axial locking voussoir to the hobbing cutter. The locking piece is connected with connecting portion and fastening bolt respectively, and locking piece can hinder fastening bolt's not hard up, strengthens fastening bolt and end cover's joint strength.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic front view of a connection structure of a medium hob and an axial locking assembly provided by the present invention;

FIG. 2 is a schematic side view of the connection structure of the central hob and the axial locking assembly according to the present invention;

FIG. 3 is a schematic structural view of the axial locking stopper of the present invention;

fig. 4 is a schematic structural view of the radial locking assembly of the present invention;

FIG. 5 is a schematic structural view of the anti-loosening block of the present invention;

FIG. 6 is a schematic view of the overall structure of the present invention;

in the figure, the knife box 100, the hob 200, the end cover 210, the wedge part 211, the axial locking assembly 300, the axial locking stopper 310, the connecting part 311, the abutting part 312, the axial locking top block 320, the first through hole 321, the counter bore 322, the axial locking wedge 330, the fastening unit 340, the locking block 341, the locking hole 341a, the second through hole 341b, the double-stack self-locking washer 341c, the fastening bolt 342, the fastening unit 350, the fastening bolt 351, the fastening block 352, the bolt protecting sleeve 353, the radial locking assembly 400, the radial locking wedge 410 and the locking bolt 420.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

The utility model provides a double-mode shield constructs quick-witted dish sword locking device of machine in this embodiment, relates to double-mode shield and constructs quick-witted technical field for fix hobbing cutter 200 in tool box 100 steadily, prevent to take place to become flexible between hobbing cutter 200 and the tool box 100, influence the normal use of blade disc.

Referring to fig. 1 to 6, the locking device for the cutter of the dual-mold shield tunneling machine in the present embodiment includes a cutter box 100, a hob 200, and an end cover 210 for connecting the cutter box 100 and the hob 200, wherein the hob 200 is inserted into the end cover 210 and rotatably connected to the end cover 210, and the end cover 210 is clamped in the cutter box 100. The device further comprises an axial locking assembly 300, wherein the axial locking assembly 300 comprises an axial locking stopper 310 abutted with the hob 200, an axial locking ejector block 320 abutted with the hob, an axial locking wedge 330 and a fastening unit 340, two ends of the axial locking wedge 330 are respectively abutted with the axial locking stopper 310 and the axial locking ejector block 320, inclined planes abutted with each other are arranged between the axial locking stopper 310 and the axial locking wedge 330, when the axial locking wedge 330 moves relative to the axial locking stopper 310 and the axial locking ejector block 320, axial abutting force can be applied to the axial locking ejector block 320 to lock the shaft end of the hob 200, the axial locking of the hob 200 is locked, and axial looseness of the hob 200 is prevented. The fastening unit 340 comprises an anti-loosening block 341 and a fastening bolt 342, a connecting portion 311 protruding relative to the hob 200 is arranged at the bottom of the axial locking stopper 310, the fastening bolt 342 penetrates through the connecting portion 311 to be connected with the bottom of the end cover 210, the fastening bolt 342 fixes the whole axial locking stopper 310 on the end cover 210, and the axial locking stopper 310 is prevented from displacing and shifting in a vibration process, so that the abutting inclined surface is changed, and the axial abutting force of the axial locking wedge 330 on the hob 200 is influenced. The anti-loosening block 341 is connected with the connecting part 311 and the fastening bolt 342 respectively, and the anti-loosening block 341 can prevent the fastening bolt 342 from loosening and enhance the connection strength between the fastening bolt 342 and the end cover 210.

In use, the hob 200 and the end cap 210 are first installed into the tool box 100 from the upper end of the tool box 100, and the axial locking stopper 310, the axial locking top block 320 and the axial locking wedge 330 are sequentially installed so as to abut against each other. Then, the locking piece 341 is attached from below the magazine 100, and is connected to the bottom of the end cap 210 through the connecting portion 311 by a fastening bolt 342, and the axial locking stopper 310 is fixed, thereby completing the axial locking and the axial stopping of the hob 200 and preventing the hob 200 from being loosened.

Referring to fig. 1 and 2, a first through hole 321 is formed in the axial locking top block 320, a counter bore 322 is formed in one side, close to the axial locking wedge 330, of the first through hole 321, the counter bore 322 is formed in one side, close to the axial locking wedge 330, a bolt is inserted from one side of the counter bore 322, penetrates through the first through hole 321, and is connected with a cutter head, so that the axial locking top block 320 is fixed on the cutter head, and the axial locking top block 320 can be prevented from moving and displacing. The end of the bolt is hidden in the counter bore 322, and the abutting surfaces of the axial locking top block 320 and the axial locking wedge block 330 are always kept flat, so that the axial locking wedge block 330 can be abutted and the pressure can be conveniently transmitted.

Referring to fig. 2 and 6, the axial locking assembly 300 further includes a tightening unit 350, the tightening unit 350 includes a tightening bolt 351 and a tightening block 352, the tightening block 352 is disposed across the bottom of the knife box 100 and abuts against the knife box 100, the tightening bolt 351 passes through the tightening block 352 and is screwed with the axial locking wedge 330, and by rotating the tightening bolt 351, the axial locking wedge 330 can be pulled to one side, so that the axial locking wedge 330 presses the axial locking block 310 and the axial locking top block 320 to both sides, thereby ensuring that the shaft end of the hob 200 is pressed and locked. As a further embodiment, the end of the tightening bolt 351 is provided with a bolt protecting sleeve 353, and the bolt protecting sleeve 353 can prevent the bolt from loosening.

With continued reference to fig. 2, 3 and 6, the bottom of the axial locking stop 310 is provided with an abutment 312 projecting away from the hob 200, the abutment 312 abutting against the cutterhead. After one end of the axial locking stopper 310 abuts against the hob 200 and is thinned to an abutting force, the other end of the axial locking stopper 310 generates a rotation torque, and the abutting portion 312 abutting against the cutterhead can eliminate the torque. At the same time, the abutment 312 may protect the tension bolt 351 from the tension bolt 351 colliding with the cutterhead.

Referring to fig. 2, 4 and 5, the anti-loosening block 341 is provided with an anti-loosening hole 341a and a second through hole 341b, the anti-loosening hole 341a is sleeved on an end of the locking bolt 420, and the bolt passes through the second through hole 341b and is connected to the connecting portion 311. The fastening bolt 342 can be fixed by the locking piece 341 bolted to the connection portion 311, and the fastening bolt 342 is prevented from loosening. The anti-loosening hole 341a is specifically a quincuncial hole, and the anti-loosening hole 341a can be engaged with a hexagonal bolt head to prevent the bolt from rotating by itself.

The double-stack self-locking washer 341c is arranged inside the anti-loosening hole 341a, the double-stack self-locking washer 341c is arranged between the connecting part 311 and the anti-loosening block 341, and the common washer or the elastic washer is replaced by the double-stack self-locking washer 341c, so that the locking bolt 420 can be effectively prevented from being loosened and released in long-time vibration to a certain extent.

The second through hole 341b is a kidney-shaped hole, and the kidney-shaped hole is provided with an adjusting allowance, so that the installation accommodation rate of the anti-loosening block 341 is improved.

Referring to fig. 6, the apparatus further includes a radial locking assembly 400, the radial locking assembly 400 includes a radial locking wedge 410 and a locking bolt 420, which are respectively abutted against the end cover 210 and the side wall of the tool box 100, the locking bolt 420 is screwed with the radial locking wedge 410 through the tool box 100, the side portion of the end cover 210 is provided with a wedge portion 211, the radial locking wedge 410 and the wedge portion 211 form an inclined plane which is abutted against each other, and the radial locking wedge 410 radially compresses the end cover 210 to limit and lock the radial direction of the hob 200, so as to prevent the hob 200 from loosening. The locking bolt 420 may be fixed by the anti-loosening block 341 to prevent the locking bolt 420 from loosening.

The working process comprises the following steps: first, the hob 200 and the end cap 210 are installed in the tool box 100 from the upper end of the tool box 100, and the axial locking stopper 310, the axial locking top block 320, and the axial locking wedge 330 are sequentially installed so as to abut against each other. Then, the locking block 341 is attached from below the tool box 100, and the axial locking stopper 310 is fixed by fastening bolts 342 passing through the connecting portions 311 and being connected to the bottom of the end cap 210. Next, the tensioning block 352 is erected at the bottom of the hob box 100, the tensioning bolt 351 penetrates through the tensioning block 352 and is screwed with the axial locking wedge 330, the axial locking wedge 330 can be pulled to move by tightening the tensioning bolt 351, the axial locking stopper 310 and the axial locking top block 320 are pressed towards two sides to complete the axial limiting and locking of the hob 200, and the hob 200 is prevented from loosening.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The disc cutter anti-loosening device for the double-mold shield machine comprises a cutter box, a hob and an end cover for connecting the cutter box and the hob, and is characterized by further comprising an axial locking assembly, wherein the axial locking assembly comprises an axial locking stop block abutted against the hob, an axial locking top block abutted against the hob, an axial locking wedge block and a fastening unit, two ends of the axial locking wedge block are respectively abutted against the axial locking stop block and the axial locking top block, and mutually abutted inclined planes are arranged between the axial locking stop block and the axial locking wedge block so as to lock the shaft end of the hob by applying axial abutting force to the axial locking wedge block; the fastening unit comprises an anti-loosening block and a fastening bolt, the bottom of the axial locking stop block is provided with a connecting portion which is opposite to the protruding portion of the hob, the fastening bolt passes through the connecting portion and is connected with the bottom of the end cover, and the anti-loosening block is respectively connected with the connecting portion and the fastening bolt and used for blocking loosening of the fastening bolt.

2. The anti-loosening device for the cutter head of the double-die shield tunneling machine as claimed in claim 1, wherein a first through hole is formed in the axial locking top block, a countersunk hole is formed in one side of the first through hole, which is close to the axial locking wedge block, and a bolt is in threaded connection with the cutter head of the shield tunneling machine through the countersunk hole and the first through hole in sequence.

3. The anti-loosening device for the disc cutter of the dual-mode shield tunneling machine according to claim 1, wherein the axial locking assembly further comprises a tightening unit, the tightening unit comprises a tightening bolt and a tightening block, the tightening block is arranged at the bottom of the cutter box in a spanning mode and is abutted against the cutter box, and the tightening bolt is connected with the axial locking wedge in a screwing mode through the tightening block so as to pull the axial locking wedge to extrude the axial locking stop block and the axial locking ejector block towards two sides.

4. The anti-loosening device for the disc cutter of the dual-mode shield tunneling machine as claimed in claim 3, wherein a bolt protecting sleeve is arranged at the end of the tension bolt.

5. The anti-loosening device for the disc cutter of the double-mode shield tunneling machine as claimed in claim 1, wherein the bottom of the axial locking stop block is provided with an abutting part protruding away from the hob, and the abutting part abuts against the disc cutter.

6. The anti-loosening device for the disc cutter of the dual-mode shield tunneling machine as claimed in claim 1, wherein the anti-loosening block is provided with an anti-loosening hole and a second through hole, the anti-loosening hole is sleeved on an end portion of the fastening bolt, and the bolt is connected with the connecting portion through the second through hole.

7. The anti-loosening device for the disc cutter of the double-mode shield tunneling machine according to claim 6, wherein the anti-loosening holes are quincuncial holes, and can prevent bolts from rotating automatically.

8. The disc cutter anti-loosening device for the dual-mode shield tunneling machine according to claim 7, wherein a double-stack self-locking washer is arranged inside the anti-loosening hole.

9. The anti-loosening device for the disc cutter of the double-mode shield tunneling machine according to claim 8, wherein the second through hole is a kidney-shaped hole.

10. The anti-loosening device for the disc cutter of the dual-mode shield tunneling machine as claimed in claim 1, further comprising a radial locking assembly, wherein the radial locking assembly comprises a radial locking wedge and a locking bolt, the radial locking wedge abuts against the end cover and the side wall of the tool box respectively, and the locking bolt is screwed with the radial locking wedge through the tool box so as to form mutually abutting inclined planes between the radial locking wedge and the side part of the end cover to press the end cover.