CN219197340U

CN219197340U - Wear-resistant cutter head for shield tunneling machine

Info

Publication number: CN219197340U
Application number: CN202223447604.XU
Authority: CN
Inventors: 冷涛; 孙廷枢; 刘敏锋; 王伟梁
Original assignee: Jiangsu Gate Tungsten Technology Co ltd
Current assignee: Jiangsu Gate Tungsten Technology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-16
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to the technical field of shield tunneling machine tool bits, and discloses a wear-resistant shield tunneling machine tool bit which comprises a cutter body, a hob and cutter handles arranged on the upper side and the lower side of the cutter body, wherein the cutter body is cylindrical, the hob is fixedly connected with the side surfaces of the cutter body, the hob is positioned in the middle of the cutter body, the cross section of the cutter handles is triangular, and one side, opposite to the two cutter handles, of the cutter handles is fixedly connected with the upper side and the lower side of the cutter body. This wear-resisting formula shield constructs machine tool bit, through set up a plurality of toper protruding heads on the side surface of hobbing cutter, and be annular distribution with the toper protruding head, when hobbing cutter and rock contact, the toper protruding head contacts with the soil layer equally, and then reduces the wearing and tearing condition that causes the hobbing cutter surface, and set up the toper protruding head and can reduce the area of contact of hobbing cutter and rock, reduce the condition of generating heat of hobbing cutter, realize effectively dispelling the heat to the hobbing cutter, improve the device's life, improve work efficiency and working quality.

Description

Wear-resistant cutter head for shield tunneling machine

Technical Field

The utility model relates to the technical field of shield tunneling machine tool bits, in particular to a wear-resistant shield tunneling machine tool bit.

Background

The basic working principle of the shield machine is that a cylindrical steel component is pushed forward along the axis of the tunnel to excavate soil. The shell of the cylinder assembly, i.e. the shield, serves as a temporary support for the excavated, as yet unlined tunnel section, withstanding the pressure of the surrounding earth layer and sometimes also the groundwater pressure and keeping the groundwater out. The operations of digging, discharging soil, lining and the like are carried out under the shield of the shield.

When carrying out the excavation operation through the shield constructs the machine, need carry out the breakage to the soil layer through the tool bit on the shield constructs the machine knife head, current shield constructs machine knife head in the work engineering, hobbing cutter and soil layer contact on the tool bit, because of hobbing cutter long-time and soil layer contact, and area of contact is great, be difficult for dispeling the heat to the hobbing cutter surface, lead to the tool bit to generate heat easily, cause the hobbing cutter to be heated to soften for the wearing and tearing condition of hobbing cutter, influence the life of tool bit, reduce work efficiency and working quality, consequently, need propose a wear-resistant shield constructs machine tool bit and solve the above-mentioned problem that appears.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the wear-resistant cutter head for the shield machine, which has the advantages of reducing the contact area between the hob and the soil layer, improving the heat dissipation effect of the hob and the like, and solves the problems that the contact area between the hob and the soil layer is large, the heat dissipation of the hob surface is difficult, the cutter head is easy to heat, the hob is heated and softened, the wear condition of the hob is accelerated, the service life of the cutter head is influenced, and the working efficiency and the working quality are reduced.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a stand wear and tear formula shield constructs machine tool bit, includes cutter body, hobbing cutter and sets up the handle of a knife in the cutter body upper and lower both sides, the cutter body is cylindric, the side fixed surface of hobbing cutter and cutter body is connected, the hobbing cutter is located the intermediate position of cutter body, the cross section of handle of a knife is triangle-shaped, the upper and lower both sides fixed connection of one side and cutter body that two handle of a knife are relative, the upper and lower both sides of hobbing cutter are all established to the inclined plane, the upper and lower both sides of hobbing cutter all are equipped with the toper protruding head.

Preferably, the upper and lower both sides of cutter body all are equipped with positioning mechanism, positioning mechanism includes four locating levers and four arc connecting rods, the both ends of arc connecting rod respectively with the side surface fixed connection of two adjacent locating levers.

Preferably, four movable grooves are formed in the upper side and the lower side of the cutter body, one end of the positioning rod, which is close to the cutter body, is located in the movable groove, a compression spring is fixedly connected to the inside of the movable groove, and one end of the compression spring is fixedly connected with the positioning rod.

Preferably, the movable groove comprises a notch and a movable groove, one end of the positioning rod, which is close to the cutter body, is fixedly connected with a limiting circular ring, the limiting circular arc is matched with the inner part of the movable groove, and the positioning rod is matched with the inner part of the notch.

Preferably, the conical raised heads are uniformly distributed on the side surface of the hob in an annular shape, the conical raised heads are distributed in two rows, and the conical raised heads in two rows are distributed in a staggered manner.

Preferably, the side surface of the hob is an arc surface, the conical raised head of the outer ring is positioned at the edge part of the hob, and the conical raised head is far away from the hob and is an arc surface.

Compared with the prior art, the utility model provides the wear-resistant cutter head for the shield tunneling machine, which has the following beneficial effects:

1. this wear-resisting formula shield constructs machine tool bit, through set up a plurality of toper protruding heads on the side surface of hobbing cutter, and be annular distribution with the toper protruding head, when hobbing cutter and rock contact, the toper protruding head contacts with rock equally, and then reduces the wearing and tearing condition that causes the hobbing cutter surface, and set up the toper protruding head and can reduce the area of contact of hobbing cutter and rock, reduce the condition of generating heat of hobbing cutter, realize effectively dispelling the heat to the hobbing cutter, improve the device's life, improve work efficiency and working quality.

2. This stand wear and tear formula shield constructs machine tool bit through setting up positioning mechanism in the both sides of cutter body, alright effectively fix a position the device, when installing the device in the inside of blade disc, remove the arc connecting rod, drive the inside removal of locating lever at movable groove, compression spring shrink simultaneously, make the device enter into the inside of blade disc, release positioning mechanism, under compression spring's effect, make it resume the extension, drive the locating lever and remove, and peg graft with the inside draw-in groove of blade disc, realize installing the cutter body, improve the fixed effect to the cutter body, make it be difficult for appearing rocking the condition.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic diagram of the complete structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic diagram of the front structure of the present utility model;

fig. 4 is a cross-sectional view of the front structure of the present utility model.

Wherein: 1. a cutter body; 2. a hob; 3. a knife handle; 4. a conical nose; 5. a positioning rod; 6. an arc-shaped connecting rod; 7. a movable groove; 8. a compression spring; 9. and a limiting ring.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Referring to fig. 1-4, a wear-resistant cutter head for a shield tunneling machine comprises a cutter body 1, a hob 2 and cutter handles 3 arranged on the upper side and the lower side of the cutter body 1, wherein the cutter body 1 can be installed and fixed inside a cutter head of the shield tunneling machine through the cutter handles 3, the cutter body 1 is cylindrical, the hob 2 is fixedly connected with the side surface of the cutter body 1, the hob 2 is positioned in the middle of the cutter body 1, the cutter body 1 is equidistantly divided into an upper part and a lower part through the hob 2, the cross section of the cutter handles 3 is triangular, the cutter handles 3 are fixed inside the cutter head and are not easy to rotate, one side of each of the two cutter handles 3 is fixedly connected with the upper side and the lower side of the cutter body 1, the upper side and the lower side of the hob 2 are both inclined planes, soil layers are conveniently crushed through the arrangement of the inclined planes on the two sides of the hob 2, the upper side and the lower side of the hob 2 are both provided with conical raised heads 4, and the hob 2 and the conical raised heads 4 are both made of alloy steel materials.

Further, positioning mechanisms are arranged on the upper side and the lower side of the cutter body 1, each positioning mechanism comprises four positioning rods 5 and four arc-shaped connecting rods 6, two ends of each arc-shaped connecting rod 6 are respectively connected with side surfaces of two adjacent positioning rods 5, round grooves matched with the positioning rods 5 are formed in the cutter disc, the cutter body 1 is positioned and fixed through the insertion of the positioning rods 5 and the round grooves in the cutter disc, the stabilizing effect of the cutter body 1 is improved, and shaking is not easy to occur.

Further, four movable grooves 7 are formed in the upper side and the lower side of the cutter body 1, the four movable grooves 7 correspond to the positions of the four positioning rods 5 respectively, one end of each positioning rod 5, close to the cutter body 1, is located inside each movable groove 7, a compression spring 8 is fixedly connected to the inside of each movable groove 7, one end of each compression spring 8 is fixedly connected with each positioning rod 5, the positioning rods 5 can be limited under the action of the compression springs 8, the positioning rods 5 are prevented from moving randomly in the inside of each movable groove 7, the four arc-shaped connecting rods 6 form a circular ring, the four positioning rods 5 are driven to synchronously move through the arc-shaped connecting rods 6, and when the positioning rods 5 move towards the inside of each movable groove 7, the device is convenient to put into the cutter disc.

Further, the movable groove 7 comprises a notch and a movable groove, one end of the positioning rod 5, which is close to the cutter body 1, is fixedly connected with a limiting circular ring 9, the limiting circular ring 9 is matched with the inside of the movable groove, the positioning rod 5 is matched with the inside of the notch, and the positioning rod 5 can be limited under the action of the limiting circular ring 9, so that the positioning rod 5 is prevented from moving out from the inside of the movable groove 7.

Further, the conical raised heads 4 are evenly distributed on the side surface of the hob 2 in an annular shape, the conical raised heads 4 are distributed in two rows, the conical raised heads 4 in two rows are distributed in a staggered mode, the conical raised heads 4 of the inner ring and the conical raised heads 4 of the outer ring are arranged in concentric circles, the conical raised heads are identical in quantity, the conical raised heads 4 distributed in a staggered mode are convenient to crush soil layers, and crushing strength is improved.

Further, the side surface of the hob 2 is set to be an arc surface, the conical raised head 4 of the outer ring is located at the edge part of the hob 2, the conical raised head 4 is far away from the hob 2 and is set to be an arc surface, the abrasion condition of the surface of the conical raised head 4 can be reduced through the arc surface, and the conical raised head 4 of the outer ring is arranged at the edge part of the hob 2, so that the strength of the side surface of the hob 2 can be improved, and the crushing effect on a soil layer is further improved.

The application process of the utility model is as follows:

when the device is used, the device is required to be installed in the cutterhead, the arc-shaped connecting rod 6 is moved towards the cutter body 1, the positioning rod 5 is driven to move towards the inside of the movable groove 7, meanwhile, the compression spring 8 is contracted, after the cutter body 1 is placed in the cutterhead, the cutter body 1 is fixed in the cutterhead through the cutter handle 3, the arc-shaped connecting rod 6 is released, the positioning rod 5 is driven to move under the action of the compression spring 8, the positioning rod 5 is enabled to be inserted into a circular groove in the cutterhead, the device is limited, the stabilizing effect on the cutter body 1 is improved, when the hob 2 breaks a soil layer, the hob 2 and the conical raised head 4 are enabled to be in contact with the soil layer, the contact area between the hob 2 and the soil layer can be reduced, and the radiating effect of the hob 2 is facilitated.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a wear-resisting formula shield constructs machine tool bit, includes cutter body (1), hobbing cutter (2), and sets up handle of a knife (3) in cutter body (1) upper and lower both sides, its characterized in that: the utility model discloses a cutter body, including cutter body (1), hobbing cutter (2), cutter body (1), hobbing cutter (2) and cutter body (1) side fixed surface connection, hobbing cutter (2) are located the intermediate position of cutter body (1), the cross section of handle of a knife (3) is triangle-shaped, and the upper and lower both sides fixed connection of one side and cutter body (1) that two handle of a knife (3) are relative, the inclined plane is all established to the upper and lower both sides of hobbing cutter (2), the upper and lower both sides of hobbing cutter (2) all are equipped with toper protruding head (4).

2. The wear-resistant shield tunneling machine cutter head according to claim 1, wherein: the utility model discloses a cutter body, including cutter body (1), cutter body (1) upper and lower both sides all are equipped with positioning mechanism, positioning mechanism includes four locating lever (5) and four arc connecting rods (6), the both ends of arc connecting rod (6) are respectively with the side surface fixed connection of two adjacent locating lever (5).

3. The wear-resistant shield tunneling machine cutter head according to claim 2, characterized in that: four movable grooves (7) are formed in the upper side and the lower side of the cutter body (1), one end of the positioning rod (5) close to the cutter body (1) is located inside the movable groove (7), a compression spring (8) is fixedly connected to the inside of the movable groove (7), and one end of the compression spring (8) is fixedly connected with the positioning rod (5).

4. A wear-resistant shield tunneling machine cutter head according to claim 3, wherein: the movable groove (7) comprises a notch and a movable groove, one end of the positioning rod (5) close to the cutter body (1) is fixedly connected with a limiting circular ring (9), the limiting circular ring (9) is matched with the inside of the movable groove, and the positioning rod (5) is matched with the inside of the notch.

5. The wear-resistant shield tunneling machine cutter head according to claim 1, wherein: the conical raised heads (4) are uniformly distributed on the side surface of the hob (2) in an annular shape, the conical raised heads (4) are distributed in two rows, and the conical raised heads (4) in two rows are distributed in a staggered mode.

6. The wear-resistant shield tunneling machine cutter head according to claim 1, wherein: the side surface of the hob (2) is an arc surface, the conical raised head (4) of the outer ring is positioned at the edge part of the hob (2), and the conical raised head (4) is far away from the hob (2) and is an arc surface.