CN208106429U

CN208106429U - A kind of tearing cutter

Info

Publication number: CN208106429U
Application number: CN201820418316.6U
Authority: CN
Inventors: 孔瑞萍; 赵万新; 黄文国; 邵和磊; 魏振武
Original assignee: Shandong Rui Drilling Engineering Equipment Co Ltd
Current assignee: Shandong Rui Drilling Engineering Equipment Co Ltd
Priority date: 2018-03-26
Filing date: 2018-03-26
Publication date: 2018-11-16
Anticipated expiration: 2028-03-26

Abstract

The utility model discloses a kind of tearing cutters, the tearing cutter includes cutter head and knife rest, carbide cutter tool is provided at the top of the cutter head, grafting block is provided on the lower end surface of the cutter head, and the grafting block extends to the lower part of the transverse slat across the transverse slat of the knife rest, the first through hole for accommodating the grafting block is provided on the transverse slat of the knife rest, the U-type groove matched with the stiffener plate is provided on the grafting block, the grafting block and stiffener plate are bolted to connection.The tearing cutter can not only guarantee the fastness connected between cutter head and knife rest, it is not easy to the phenomenon that cutter head is fallen occur, and cutter head is detachable, save use cost.

Description

A kind of tearing cutter

Technical field

The utility model relates to large shield construction machinery technical field, specifically a kind of dismountable tearing cutter.

Background technique

As shown in figure 9, traditional tearing cutter is simple cutter head to be fixed on by welding tearing cutter knife rest Transverse slat on, the problem of this structure is primarily present following several respects：

First, weld seam is completely exposed between rock or cobble, in this way the rock or cobble extraneous when shield machine tunnels It is easy to that weld seam is ground off the case where occurring cutter head with cutter head friction, and then affects the quality and speed of driving.

Second, traditional cutter head is fixed on knife rest generally by the mode of welding, once cutter head is damaged in this way, It must just be replaced together with knife rest, cause to waste, increase use cost.

Utility model content

In view of the above-mentioned problems, the utility model provides a kind of tearing cutter, which can not only guarantee cutter head and knife The fastness connected between frame, it is not easy to the phenomenon that cutter head is fallen occur, and cutter head is detachable, save use cost.

The technical solution adopted by the utility model to solve its technical problems is that：

A kind of tearing cutter, including cutter head and knife rest, are provided with carbide cutter tool at the top of the cutter head, under the cutter head Grafting block is provided on end face, and the grafting block extends to the lower part of the transverse slat across the transverse slat of the knife rest, it is described It is provided with the first through hole for accommodating the grafting block on the transverse slat of knife rest, is provided on the grafting block and stiffener plate The U-type groove matched, the grafting block and stiffener plate are bolted to connection.

Further, on the knife rest positioned at the grafting block arranged on left and right sides be respectively arranged with the first limit plate and Second limit plate, and first limit plate and the second limit plate limit the axial freedom of the bolt jointly.

Further, fixed plate, and first limit are provided between first limit plate and the second limit plate Plate, the second limit plate and fixed plate together form U-shaped limit plate, the fixed plate and the fixed company of the stiffener plate It connects.

Further, locking nut, and the outer end face of the locking nut and the bolt are provided on the bolt End face it is concordant, the medial surface of first limit plate is resisted against on the left side of the bolt, second limit plate it is interior Side is resisted against on the right side of the bolt.

Further, the outer cover of the cutter head is equipped with the protective case being made by wear-resistant material.

Further, the left and right both ends of the lower end surface of the protective case are respectively arranged with the flanging extended inwardly, described Flanging be fixedly connected by the first screw with the cutter head.

The utility model has the beneficial effects that：

1, by the way that grafting block is arranged on the lower end surface of cutter head, and the grafting block extends to cross across the transverse slat of knife rest The lower part of plate, the grafting block are fixedly connected by bolt with the stiffener plate of knife rest, so during use, cutter head Restriction effect by knife rest transverse slat and stiffener plate simultaneously, unless cutter head is broken, it is otherwise not in what cutter head was fallen Phenomenon connects stronger.

It 2, is dismountable structure between cutter head and knife rest in the utility model, in this way when cutter head is damaged, replacement Cutter head does not need to replace together with knife rest, avoids waste, has saved use cost.

3, since tearing cutter shakes during use, appearance is connected by screw bolts between grafting block and stiffener plate It easily loosens, the utility model is by being arranged U-shaped limit plate, the movement of limitation bolt in left-right direction, to avoid bolt It falls off, accordingly even when bolt loosens, as long as not falling off, the fastness connected between cutter head and knife rest would not be influenced, it is real Duplicate protection is showed.

4, by the way that protective case is arranged in the external of cutter head, the service life of cutter head is extended.

Detailed description of the invention

Fig. 1 is the schematic perspective view of the utility model；

Fig. 2 is the main view of the utility model；

Fig. 3 is the A-A cross-sectional view in Fig. 2；

Fig. 4 is the side view of the utility model；

Fig. 5 is the B-B cross-sectional view in Fig. 4；

Fig. 6 is the enlarged structure schematic diagram of part A in Fig. 5；

Fig. 7 is the explosive view of Fig. 1；

Fig. 8 is the enlarged structure schematic diagram of part B in Fig. 7；

Fig. 9 is the structural schematic diagram of traditional tearing cutter.

In figure：1- cutter head, 11- carbide cutter tool, 12- grafting block, 121-U type groove, the second through-hole of 13-, 2- knife rest, 21- Vertical plate, 22- transverse slat, 221- first through hole, 23- stiffener plate, 231- third through-hole, 3-U type limit plate, 31- fixed plate, 32- First limit plate, the second limit plate of 33-, 4- protective case, 41- flanging, 5- bolt, 51- locking nut, the first screw of 6-, 7- Two screws.

Specific embodiment

For the convenience of description, it is as shown in Figure 1 now to define coordinate system.

Embodiment one

As shown in Figure 1, a kind of tearing cutter includes cutter head 1 and knife rest 2, the top of the cutter head 1 is provided with carbide cutter tool 11。

As shown in fig. 7, the knife rest 2 includes two vertical plates 21 and the transverse slat 22 for connecting two vertical plates 21, described is vertical Plate 21 and transverse slat 22 together form U-shaped structure, are provided with stiffener plate 23 between two vertical plates 21, it is preferred that described The upper surface of stiffener plate 23 is fixedly connected with the lower surface of the transverse slat 22 by welding.

As shown in fig. 7, the grafting block 12 extended downwardly is provided on the lower end surface of the cutter head 1, the transverse slat of the knife rest 2 The first through hole 221 for allowing grafting block 12 to pass through, and the shape of the first through hole 221 and the grafting block 12 are provided on 22 Cross sectional shape it is identical.As a kind of specific embodiment, first through hole 221 described in the present embodiment is rectangle.It is described Be provided with the U-type groove 121 for accommodating the stiffener plate 23 on grafting block 12, the U-type groove 121 it is opening down.

As shown in Fig. 4, Fig. 5 and Fig. 7, the second through-hole 13, second through-hole 13 are provided on the grafting block 12 It is inside provided with bolt 5, and the bolt 5 runs through the grafting block 12 in left-right direction, sets in the stiffener plate 23 It is equipped with the third through-hole 231 for accommodating the bolt 5, is provided on the bolt 5 for locking grafting block 12 and reinforcing The locking nut 51 of gusset 23.As a kind of specific embodiment, the quantity of bolt 5 described in the present embodiment is two.

During real work, the top of the cutter head 1 is by power in left-right direction, this structure, cutter head 1 Restriction effect by 2 transverse slat 22 and stiffener plate 23 of knife rest simultaneously, unless cutter head 1 is broken, it is otherwise not in cutter head 1 the phenomenon that falling, connected stronger.

Further, the drawbacks of there is easy loosenings due to the connection of bolt 5, in order to solve this problem, such as Fig. 7 institute Show, the lower section of the knife rest 2 is provided with U-shaped limit plate 3.The U-shaped limit plate 3 includes fixed plate 31, such as Fig. 2 and Fig. 3 institute Show, the fixed plate 31 is fixedly connected by the second screw 7 with the lower end surface of the stiffener plate 23.As shown in figure 5, institute The left and right both ends for stating fixed plate 31 are respectively arranged with the first limit plate 32 and the second limit plate 33 upwardly extended, and described The upper end of one limit plate 32 and the second limit plate 33 is born against on the lower surface of the transverse slat 22.

In this way, first limit plate 32 and the second limit plate 33 limits the movement of bolt 5 in left-right direction, even if Bolt 5 loosens, would not be to the jail connected between cutter head 1 and knife rest 2 as long as bolt 5 is ignorant of falling off in the second through-hole 13 Solidity impacts.

Preferably, when the bolt 5 locks grafting block 12 and stiffener plate 23, the outer end face of the locking nut 51 It is concordant with the end face of the bolt 5, when the U limit plate is fixed in stiffener plate 23, first limit plate 32 Medial surface is resisted against on the left side of the bolt 5, and the medial surface of second limit plate 33 is resisted against the right end of the bolt 5 On face.

Further, in order to extend the service life of cutter head 1, as shown in Fig. 6, Fig. 7 and Fig. 8, the outer cover of the cutter head 1 Equipped with the protective case 4 being made by wear-resistant material, and the top of the protective case 4 is provided with for avoiding carbide cutter tool 11 Notch.The left and right both ends of the lower end surface of the protective case 4 are respectively arranged with the flanging 41 extended inwardly, the flanging 41 are fixedly connected by the first screw 6 with the cutter head 1.

The main purpose designed in this way is, since the working environment of tearing cutter is more severe, if directly in the side of protective case 4 Screw is set on face, then head of screw can be deformed because of abrasion during use, when disassembly may because of abrasion deformation and It can not dismantle.

Embodiment two

Remove U-shaped limit plate 3, limit plate is respectively set in the arranged on left and right sides of grafting block 12, and the limit plate passes through Screw is fixedly connected with the transverse slat 22, remaining structure is the same as embodiment one.

Embodiment three

The fixed plate 31 is fixedly connected with the lower end surface of the stiffener plate 23 by welding, remaining structure With embodiment one.

Claims

1. a kind of tearing cutter, including cutter head and knife rest, carbide cutter tool is provided at the top of the cutter head, it is characterised in that：Institute It states and is provided with grafting block on the lower end surface of cutter head, and the grafting block extends to the transverse slat across the transverse slat of the knife rest Lower part is provided with the first through hole for accommodating the grafting block on the transverse slat of the knife rest, is provided on the grafting block The U-type groove matched with stiffener plate, the grafting block and stiffener plate are bolted to connection.

2. a kind of tearing cutter according to claim 1, it is characterised in that：Positioned at the grafting block on the knife rest Arranged on left and right sides is respectively arranged with the first limit plate and the second limit plate, and first limit plate and the second limit plate limit jointly The axial freedom of the bolt is made.

3. a kind of tearing cutter according to claim 2, it is characterised in that：Between first limit plate and the second limit plate It is provided with fixed plate, and the first limit plate, the second limit plate and the fixed plate together forms U-shaped limit plate, it is described Fixed plate is fixedly connected with the stiffener plate.

4. a kind of tearing cutter according to claim 2, it is characterised in that：Locking nut is provided on the bolt, and The outer end face of the locking nut is concordant with the end face of the bolt, and the medial surface of first limit plate is resisted against the bolt Left side on, the medial surface of second limit plate is resisted against on the right side of the bolt.

5. a kind of tearing cutter according to claim 1, it is characterised in that：The outer cover of the cutter head is equipped with by wear-resistant material The protective case being made.

6. a kind of tearing cutter according to claim 5, it is characterised in that：The left and right both ends of the lower end surface of the protective case It is respectively arranged with the flanging extended inwardly, the flanging is fixedly connected by the first screw with the cutter head.