CN216741521U

CN216741521U - Single-blade face hob for improved shield machine

Info

Publication number: CN216741521U
Application number: CN202123442658.2U
Authority: CN
Inventors: 夏生鹏; 谢黎君
Original assignee: Guangzhou Yueyu Tunnel Engineering Equipment Co ltd
Current assignee: Guangzhou Yueyu Tunnel Engineering Equipment Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-14
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the field of shield machine hobs, and discloses an improved single-blade face hob for a shield machine, which comprises a hob hub and a hob ring, wherein a fixing groove is formed in the side wall of the hob hub, a fixing ring is movably arranged in the fixing groove, an inserting block is fixed at one end of the fixing ring, and an inserting groove matched with the inserting block is formed in the other end of the fixing ring.

Description

Single-blade face hob for improved shield machine

Technical Field

The utility model relates to the field of shield machine hobs, in particular to an improved single-blade face hob for a shield machine.

Background

The shield tunneling machine is a special engineering machine for tunneling, and has the characteristics of high automation degree, labor saving, high construction speed and the like. The hobbing cutter of the shield machine is a key part for the excavation construction of the shield machine and generally comprises a cutter body, a cutter shaft is installed in the cutter body through a bearing, an annular cutter ring is installed outside the cutter body, and in the excavation process, the edge part on the periphery of the cutter ring is embedded into rock to crush the surface of the rock for excavation.

The cutter ring and the cutter body of the existing shield machine are assembled in an interference fit mode, after the cutter ring and the cutter body are fixed, a small opening needs to be formed in the fixing ring, the fixing ring is enabled to have certain toughness, then the cutter ring is sleeved with the fixing ring, and then the fixing ring is fixed in a welding mode, but under the condition that the hob is continuously rolled and rubbed, the cutter ring is inclined and falls off due to the fact that the welding position is likely to crack, and the whole hob loses effect.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides an improved single-blade face hob for a shield machine, which aims to solve the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an improved generation shield constructs machine single-edged positive hobbing cutter, includes sword hub and cutter ring, the fixed slot has been seted up on the sword hub lateral wall, the fixed slot internalization is provided with solid fixed ring, gu fixed ring's one end is fixed with the inserted block, gu fixed ring's the other end sets up the slot that matches with the inserted block.

Preferably, the inner wall of slot sets up the first screw hole that runs through both sides, the lateral wall of inserted block sets up the second screw hole that runs through both sides, gu threaded connection has the set screw who matches with first screw hole and second screw hole on the solid fixed ring.

Preferably, the outer side wall of the fixing groove is provided with a thread groove, and the fixing screw is in threaded connection with the thread groove.

Preferably, the outer end of the cutter ring is welded with a wear-resistant layer.

Preferably, the outer side wall of the fixing ring is welded with a wear-resistant layer.

(III) advantageous effects

Compared with the prior art, the utility model has the following beneficial effects:

1. this kind of novel be applied to improved generation shield constructs machine single-edged face hobbing cutter through inserting piece and slot connection between the solid fixed ring of setting, can not open the edge of a knife to solid fixed ring like this, can not strike with the sword hub lateral wall fish tail because of hammering with the sledge in the solid fixed ring of installation simultaneously.

2. This kind of novel be applied to improved generation shield constructs machine single-edged positive hobbing cutter sets up the wearing layer through setting up in the outer end of cutter ring and solid fixed ring's lateral wall, has increased the availability factor of device, reduces the change rate.

Drawings

FIG. 1 is a schematic view of an overall structure of the present invention;

FIG. 2 is a schematic view of a structure of the present invention with a retaining ring removed as a whole;

FIG. 3 is a schematic view of a retaining ring according to the present invention;

fig. 4 is a schematic structural diagram of a portion a in fig. 3.

In the figure: 1. a cutter hub; 2. a cutter ring; 3. a fixing ring; 4. fixing grooves; 5. inserting a block; 6. inserting slots; 7. A first threaded hole; 8. a second threaded hole; 9. and fixing the screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-4, an improved single-blade face hob for a shield machine includes a hob hub 1 and a hob ring 2, and is characterized in that a fixing groove 4 is formed on a side wall of the hob hub 1, a fixing ring 3 is movably disposed in the fixing groove 4, an insertion block 5 is fixed at one end of the fixing ring 3, and an insertion slot 6 matched with the insertion block 5 is formed at the other end of the fixing ring 3.

As shown in fig. 3, the inner wall of the slot 6 is provided with a first threaded hole 7 penetrating through both sides, the side wall of the insert block 5 is provided with a second threaded hole 8 penetrating through both sides, the fixing ring 3 is connected with a fixing screw rod 9 matched with the first threaded hole 7 and the second threaded hole 8 in a threaded manner, the first threaded hole 7 corresponds to the second threaded hole 8 in position, so that the fixing ring 3 is connected more closely, and the fixing ring can be fixed through the fixing screw rod 9.

As shown in fig. 4, a thread groove is formed on an outer side wall of the fixing groove 4, the fixing screw 9 is in threaded connection with the thread groove, the fixing screw 9 is in threaded connection with the fixing groove 4, and the fixing groove 4 is formed on an outer side wall of the hub 1, so that the fixing ring 3 can be indirectly connected with the hub 1.

As shown in figure 1, the outer end of the cutter ring 2 is welded with a wear-resistant layer, the outer end of the cutter ring 2 is welded with the wear-resistant layer, so that the wear resistance of the cutter ring 2 is improved, and the replacement rate of the cutter ring 2 is reduced.

As shown in fig. 3, the outer side wall of the fixing ring 3 is welded with a wear-resistant layer, and the outer side wall of the fixing ring 3 is welded with a wear-resistant layer, so that the wear resistance of the fixing ring 3 is improved, and the replacement rate is not increased due to the wear of the fixing ring 3.

The working principle is as follows: when the tool ring is used, the tool ring 2 and the tool hub 1 are fixed in an interference fit mode, one fixing ring 3 is clamped in the fixing groove 4, the other fixing ring 3 and the fixed fixing ring 3 are inserted into the inserting groove 6 through the inserting block 5 to be connected, the fixing screw 9 is inserted into the first threaded hole 7 and the second threaded hole 8 and is in threaded connection with the threaded groove formed in the side wall of the fixing groove 4, and then the fixing screw 9 is welded with the tool ring 2 and the tool hub 1 through a wear-resistant welding process; due to the arrangement, the fixing rings 3 can be installed without being knocked by a large hammer manually, the surface of the cutter hub 1 is prevented from being scratched in the knocking process, the fixing rings 3 cannot be knocked and deformed due to knocking, cutting edges are not required to be cut on each fixing ring 3, and the working efficiency is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an improved generation shield constructs machine single-edged positive hobbing cutter, includes sword hub (1) and cutter ring (2), its characterized in that, fixed slot (4) have been seted up on sword hub (1) lateral wall, fixed slot (4) internalization is provided with solid fixed ring (3), the one end of solid fixed ring (3) is fixed with inserted block (5), slot (6) that match with inserted block (5) are seted up to the other end of solid fixed ring (3).

2. The improved single-blade face hob for the shield machine according to claim 1, wherein a first threaded hole (7) penetrating through both sides is formed in an inner wall of the slot (6), a second threaded hole (8) penetrating through both sides is formed in a side wall of the insert block (5), and a fixing screw (9) matching with the first threaded hole (7) and the second threaded hole (8) is connected to the fixing ring (3) in a threaded manner.

3. The improved single-blade face hob for the shield machine according to claim 2, wherein the outer side wall of the fixing groove (4) is provided with a thread groove, and the fixing screw (9) is in threaded connection with the thread groove.

4. The improved single-edge face hob for the shield machine according to claim 1, characterized in that the outer end of the cutter ring (2) is welded with a wear layer.

5. The improved single-blade face hob for a shield machine according to claim 1, characterized in that the outer side wall of the fixing ring (3) is welded with a wear resistant layer.