CN105370292B - A kind of center fish tail knife - Google Patents
A kind of center fish tail knife Download PDFInfo
- Publication number
- CN105370292B CN105370292B CN201510733082.5A CN201510733082A CN105370292B CN 105370292 B CN105370292 B CN 105370292B CN 201510733082 A CN201510733082 A CN 201510733082A CN 105370292 B CN105370292 B CN 105370292B
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- cutter hub
- additive
- cutter
- tool rest
- fish tail
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Abstract
The invention discloses a kind of center fish tail knife, belong to shield machine accessories field.The center fish tail knife includes tool rest, first cutter hub, additive injection block and two the second cutter hubs, two the second cutter hubs are respectively symmetrically arranged in the both sides of the first cutter hub and are vertically fixed on the first cutter hub, the bottom of two the second cutter hubs is each attached on tool rest, the position that additive injection block is corresponded on each second cutter hub offers the second holding tank, additive injection block is located in accommodating chamber and on additive injection block mounting hole, injection channel is offered on first cutter hub and two the second cutter hubs, multiple spray orifices are arranged at the position that accommodating chamber is corresponded in additive injection block, the spray orifice of bottom is connected with injection channel by connecting tube.The center fish tail knife guides to injection channel exit by the additive that the injection channel on the first cutter hub and the second cutter hub can be injected the additive into block by connecting tube, so as to increase the injection scope of additive, effectively prevent incrusted problem.
Description
Technical field
The present invention relates to shield machine accessories field, more particularly to a kind of center fish tail knife.
Background technology
Shield machine is a kind of special engineering machinery of tunnel piercing.The center fish tail knife of existing shield machine include cutter hub and
Tool rest, cutter hub is tabular and top is pointed shape, and cutter hub is fixed on tool rest, and tool rest is fixed on cutterhead, passes through rotary head
So as to drive center fish tail knife rotation, because center fish tail knife cuts the soil body by the way of rotation so that in center fish tail knife
Pivot nearby be readily formed mud cake, the mud cake of formation can influence the driving speed of shield machine, and knife can be caused when serious
Disk excessive wear, so as to reduce the security of shield machine.In order to prevent the mud lining near the pivot of center fish tail knife
The problem of, technical staff opens up through hole on cutter hub, an additive injection block is set in through hole, and the additive is injected
Block is fixed on tool rest, nearby additive is injected to the pivot of center fish tail knife by additive injection block, so as to improve
The mobility of additive injection block surrounding soil.
During the present invention is realized, inventor has found that prior art at least has problems with：
Additive is nearby injected to the pivot of center fish tail knife by additive injection block, due to the injection of additive
Scope is small, can only improve the mobility of the small range of soil body, solution shield machine that can not the be basic center in tunneling process
The problem of center mud lining of fish tail knife.
The content of the invention
In order to solve the problems, such as that what prior art can not be at all solves the center mud lining of the center fish tail knife of shield machine,
The embodiments of the invention provide a kind of center fish tail knife.The technical scheme is as follows：
The embodiments of the invention provide a kind of center fish tail knife, including tool rest on cutter head of shield machine, mounted in institute
State the first cutter hub on tool rest and offer the additive injection block of multiple spray orifices, additive injection is offered on the tool rest
Block mounting hole, the position that the additive injection block is corresponded on first cutter hub offer the first holding tank, the center fish
Tail knife also includes two the second cutter hubs, and two second cutter hubs are respectively symmetrically arranged in both sides of first cutter hub and vertical
It is fixed on first cutter hub, the bottom of two second cutter hubs is each attached on the tool rest, each second knife
The position that the additive injection block is corresponded on body offers the second holding tank, and the additive injection block is held positioned at described first
Receive in the accommodating chamber that groove and second holding tank are formed and the tool rest is arranged on by the additive injection block mounting hole
On, injection channel is offered on first cutter hub and two second cutter hubs, multiple spray orifices are arranged at described
The position of the accommodating chamber is corresponded in additive injection block, outer wall of multiple spray orifices along the additive injection block is circumferential
Arranging multiplayer, the spray orifice of bottom are connected with the injection channel by connecting tube.
Specifically, the Breadth Maximum of first cutter hub is equal to the Breadth Maximum of four times of second cutter hubs.
Specifically, it is spaced apart on first cutter hub and second cutter hub and is provided with multiple mounting grooves, each the peace
Hard alloy blocks are installed in tankage.
Further, the surface of the hard alloy blocks is covered with wearing layer.
Further, the top of first cutter hub is isosceles triangle, and the angle model of the drift angle of first cutter hub
Enclose for 118 °~150 °, be right angled triangle at the top of two second cutter hubs, the first of two second cutter hubs is straight
The arm of angle is each attached on first cutter hub, the angular range of the hypotenuse of two second cutter hubs and the angle of the first right-angle side
It is 40 °~62 °.
Further, the mounting groove is offered on the drift angle of first cutter hub.
Specifically, the tool rest includes the cone-shaped bearing of water chestnut and is fixed on the tool rest mounting seat of the rest base, institute
State and screw mounting hole is set in tool rest mounting seat, the tool rest mounting seat is arranged on the cutterhead by screw, the addition
Agent injection block mounting hole is opened on the bearing, and the bottom of the additive injection block enters hole, the tool rest provided with additive
Mounting seat, which corresponds to the additive and enters the position in hole, offers additive delivery tube mounting hole, and additive delivery tube adds positioned at described
Add in agent delivery tube mounting hole and enter hole with the additive and connect.
Further, the bottom of the tool rest mounting seat is provided with the positioning boss to match with the cutterhead.
Further, the additive enters the hole wall in hole and is provided with internal thread, the additive delivery tube and the addition
Agent injection block is connected through a screw thread.
Specifically, the tool rest mounting seat is kidney ellipsoid.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：The embodiments of the invention provide a kind of center
Fish tail knife, including the first cutter hub and the second cutter hub, the first cutter hub and the second cutter hub form cross structure, and cross structure can improve
Centering of the shield machine in tunnelling, so that center fish tail cutter has higher axiality, beneficial to the cutting soil body and increase
Add the mobility of the soil body, meanwhile, the present invention can be injected the additive into by the injection channel on the first cutter hub and the second cutter hub
Additive in block guides to injection channel exit by connecting tube, so as to increase the injection scope of additive, meanwhile, addition
The spray orifice not connected in agent injection block with injection channel can still carry out spray near additive injection block so that additive
The mobility of the soil body can be effectively improved, so as to effectively prevent the incrusted problem of center fish tail knife.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the main structure diagram of fish tail knife in center provided in an embodiment of the present invention；
Fig. 2 is the overlooking the structure diagram of fish tail knife in center provided in an embodiment of the present invention；
Fig. 3 is Fig. 1 provided in an embodiment of the present invention partial sectional view；
Fig. 4 is the structural representation of the first cutter hub provided in an embodiment of the present invention；
Fig. 5 is the structural representation of the second cutter hub provided in an embodiment of the present invention；
Fig. 6 is the sectional view of mounting seats of Fig. 1 provided in an embodiment of the present invention A-A in and the second hard alloy blocks.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
The embodiments of the invention provide a kind of center fish tail knife, and as shown in Figure 1, Figure 2 and Figure 3, the center fish tail knife includes
Tool rest 1 on cutter head of shield machine (not shown), the first cutter hub 2 (referring to Fig. 4) on tool rest 1 and offer more
The additive injection block 4 of individual spray orifice 3, offers additive injection block mounting hole 5 on tool rest 1, corresponding addition on the first cutter hub 2
The position of agent injection block 4 offers the first holding tank 2a, and the center fish tail knife also includes two the second cutter hubs 6, two the second knives
Body 6 is respectively symmetrically arranged in the both sides of the first cutter hub 2 and is vertically fixed on the first cutter hub 2, and the bottom of two the second cutter hubs 6 is equal
It is fixed on tool rest 1, the position that additive injection block 4 is corresponded on each second cutter hub 6 offers the second holding tank 6a (referring to figure
5), additive injection block 4 is located in the accommodating chamber that the first holding tank 2a and the second holding tank 6a is formed and injected by additive
Block mounting hole 5 is arranged on tool rest 1, and injection channel 8, multiple spray orifices are offered on the first cutter hub 2 and two the second cutter hubs 6
3 are arranged at the position that accommodating chamber is corresponded in additive injection block 4, outer wall circumference cloth of multiple spray orifices 3 along additive injection block 4
Multilayer is put, the spray orifice 3 of bottom is connected with injection channel 8 by connecting tube 9.The inside of additive injection block 4 is provided with additive
Flowing lumen 4b, the bottom of additive injection block 4 are provided with additive and enter hole 4a, and spray orifice 3 passes through additive flowing lumen 4b and addition
Agent enters hole 4a connections.Additive can be entered hole 4a by additive and is passed through, and be sprayed by spray orifice 3.Meanwhile additive can be by adding
Agent flowing lumen 4b flows into connecting tube 9 and sprayed by injection channel 8.Wherein, the injection channel 8 on the first cutter hub 2 can be along first
Cutter hub 2 is centrosymmetrically arranged, and in the present embodiment, the injection channel 8 on the first cutter hub 2 can be two, each second knife
One injection channel 8 is respectively set on body 6, and can increase the quantity of injection channel 8 according to specific circumstances prevents from tying mud to improve
The effect of cake.In addition, the additive injection block 4 can be cylindrical type.
Specifically, as shown in Fig. 2 the Breadth Maximum D1 of the first cutter hub 2 is equal to the Breadth Maximum D2 of four times of second cutter hub 6.
By setting D1=2 × D2 that the first cutter hub 2 can be made different with the agitation amplitude of the second cutter hub 6, so as to increase the first cutter hub 2
With the mobility of the soil body at the second cutter hub 6, and then the incrusted problem of prevention center fish tail knife.
Further, as shown in figure 1, the top of the first cutter hub 2 is isosceles triangle, and the apex angle α 1 of the first cutter hub 2
Angular range is 118 °~150 °, as shown in figure 5, the top of two the second cutter hubs 6 is right angled triangle, two the second cutter hubs
2 the first right-angle side is each attached on the first cutter hub 2, the angle of the hypotenuse of two the second cutter hubs 2 and the angle α 2 of the first right-angle side
It is 40 °~62 ° to spend scope.
Specifically, the drift angle of the first cutter hub 2 and the second cutter hub 6 is respectively arranged with the first hard alloy blocks 10a.First hard
Alloy block 10a can slow down the abrasion at the first cutter hub 2 and the top of the second cutter hub 6, increase the intensity of center fish tail knife, so as to increase
The ability of the first cutter hub 2 cutting soil body and the service life for increasing center fish tail knife, while the pick of shield machine can also be lifted
Enter speed.The first hard alloy blocks 10a wherein on the first cutter hub 2 and the second cutter hub 6 is fixedly connected by welding, specifically,
The first hard alloy blocks 10a installed in the top of the second cutter hub 6 can be isosceles right angle trigonometry type, wherein one article of right-angle side and the
Two cutter hubs 6 weld, the sidewall weld of the first hard alloy blocks 10a hypotenuse and the first cutter hub 2.
Specifically, it is spaced apart in the side wall of the first cutter hub 2 and the second cutter hub 6 and is provided with multiple mounting grooves, each mounting groove
Mounting seat 13 is inside provided with, the second hard alloy blocks 10b is installed in mounting seat 13.Mounting seat 13 can be welded on mounting groove
Interior, the second hard alloy blocks 10b cross section can be rectangle, and the second hard alloy blocks 10b longitudinal section can be divided into up and down
Two parts, wherein, the top of the second hard alloy blocks 10b longitudinal sections be it is trapezoidal, the second hard alloy blocks 10b longitudinal section
Bottom is the swallow-tail form coordinated with dove tail shape, due to the 6 easy excessive wear of the first cutter hub 2 and the second cutter hub, so passing through
The abrasion at the first cutter hub 2 and the middle part of the second cutter hub 6 can be slowed down by installing the second hard alloy blocks 10b, increase center fish tail knife
Service life, while the driving speed of shield machine can be lifted.In addition, it is hard that installation second can be provided in the mounting seat 13
Matter alloy block 10b dovetail groove, dovetail groove can be conveniently replaceable and install the second hard alloy blocks 10b, when needing replacing second
During hard alloy blocks 10b, the hard alloy blocks 10b of mounting seat 13 and second integrally is dug with gouge, the mounting seat more renewed
13 and second are integrally welded in mounting groove after hard alloy blocks 10b, then by the hard alloy blocks 10b of mounting seat 13 and second, so
It can avoid replacing the whole cutter hub 6 of first cutter hub 2 and second because of the second hard alloy blocks 10b abrasion, save using
The cost of one cutter hub 2 and the second cutter hub 6.
Further, as shown in fig. 6, the second hard alloy blocks 10b surface can be covered with wearing layer 14, the first hard
Alloy block 10a surface can also be covered with wearing layer 14, in addition.Wherein, wearing layer 14 can be hard alloy abrasion-resistant layer,
In the present embodiment, the hard alloy abrasion-resistant layer 14 can be HF-800K materials, and wearing layer 14 can further prevent the first hard
Alloy block 10a and the second hard alloy blocks 10b abrasions, increase the intensity of center fish tail knife.
Wherein, the height of mounting groove can be 50mm~100mm, and the height of the mounting groove can be carried out as the case may be
Adjustment.First hard alloy blocks 10a and the second hard alloy blocks 10b is the common used material for preparing cutter, in the present embodiment,
The first hard alloy blocks 10a and the second hard alloy blocks 10b can be KE11 materials, the first hard alloy blocks 10a and
Two hard alloy blocks 10b width can respectively with the first cutter hub 2 and the consistency of thickness of the second cutter hub 6, the first cutter hub 2 and second
The thickness of cutter hub 6 can be 50mm~120mm.
Specifically, tool rest 1 can include the cone-shaped bearing 1a of water chestnut and be fixed on the tool rest mounting seat 1b of bearing 1a bottoms,
Screw mounting hole 1c, tool rest mounting seat 1b is set to be arranged on by screw on cutterhead on tool rest mounting seat 1b, additive injection block
Mounting hole 5 is opened on bearing 1a, and the bottom of additive injection block 4 enters hole 4a provided with additive, and tool rest mounting seat 1b correspondingly adds
Add agent to enter hole 4a position and offer additive delivery tube mounting hole 11, additive delivery tube (not shown) is located at additive fortune
In defeated pipe mounting hole 11 (referring to Fig. 2) and enter hole 4a with additive to connect.Wherein, due to the cone-shaped bearing 1a lower dimensions of water chestnut
Greatly, upper dimension is small, and has four taper seamed edges, thus with cutterhead rotate when, the cone-shaped bearing 1a of the water chestnut can increase
The mobility of the soil body, the incrusted problem of prevention center fish tail knife.
Further, tool rest mounting seat 1b bottom is provided with the positioning boss 12 to match with cutterhead.The positioning boss 12
It can be kidney ellipsoid, be provided with the oval connected in star being engaged with the positioning boss of kidney ellipsoid 12, convex accordingly, on cutterhead
Platform 12 can limit positions of the tool rest mounting seat 1b on cutterhead, prevent tool rest mounting seat 1b from being shifted in rotation process.
Further, additive enters hole 4a hole wall and is provided with internal thread, and additive delivery tube and additive injection block 4 are logical
Cross threaded connection.
Specifically, tool rest mounting seat 1b can be kidney ellipsoid, and kidney ellipsoid is easy to installation of the tool rest 1 on cutterhead with determining
Position, screw mounting hole 1c being arranged circumferentially along tool rest mounting seat 1b.
Specifically, breach 7 can be set on the first cutter hub 2 and two the second cutter hubs 6, the height of the breach 7 can be
20mm~50mm, the breach 7 can make to be formed between 20mm~50mm between the first cutter hub 2 and the second cutter hub 6 and cutter head panel
Gap, from knife cutting under the soil body be easy to flow by these gaps, so as to improve soil body flow.
Specifically, in the present embodiment, fixed form can be welding.
The embodiments of the invention provide a kind of center fish tail knife, including the first cutter hub and the second cutter hub, the first cutter hub and
Two cutter hubs form cross structure, and cross structure can improve centering of the shield machine in tunnelling, so that center fish tail
Cutter has higher axiality, the soil body and increases the mobility of the soil body beneficial to cutting, meanwhile, the present invention passes through the first cutter hub and the
The additive that injection channel on two cutter hubs can be injected the additive into block guides to injection channel exit by connecting tube, from
And the injection scope of additive is increased, meanwhile, the spray orifice not connected in additive injection block with injection channel still can be
Additive injection block nearby carries out spray so that additive can be effectively improved the mobility of the soil body, so as to effectively prevent center
The incrusted problem of fish tail knife.Moreover, fish tail knife in center provided by the invention is simple in construction easy for installation.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (9)
1. a kind of center fish tail knife, including the tool rest (1) on cutter head of shield machine, first on the tool rest (1)
Cutter hub (2) and the additive injection block (4) for offering multiple spray orifices (3), additive injection block is offered on the tool rest (1)
Mounting hole (5), the position that the additive injection block (4) is corresponded on first cutter hub (2) offer the first holding tank (2a),
Characterized in that, the center fish tail knife also includes two the second cutter hubs (6), two second cutter hubs (6) respectively symmetrically cloth
Put in the both sides of first cutter hub (2) and be vertically fixed on first cutter hub (2), two second cutter hubs (6)
Bottom is each attached on the tool rest (1), and the position of the additive injection block (4) is corresponded on each second cutter hub (6)
The second holding tank (6a) is offered, the additive injection block (4) is located at first holding tank (2a) and described second and accommodated
It is arranged in the accommodating chamber that groove (6a) is formed and by the additive injection block mounting hole (5) on the tool rest (1), described the
Injection channel (8) is offered on one cutter hub (2) and two second cutter hubs (6), multiple spray orifices (3) are arranged at institute
State the position that the accommodating chamber is corresponded in additive injection block (4), multiple spray orifices (3) are along the additive injection block
(4) circumferentially multilayer, the spray orifice (3) of bottom are connected outer wall with the injection channel (8) by connecting tube (9),
It is spaced apart in the side wall of first cutter hub (2) and second cutter hub (6) and is provided with multiple mounting grooves, each mounting groove
Mounting seat (13) is inside provided with, the second hard alloy blocks (10b) are installed on the mounting seat (13).
2. fish tail knife in center according to claim 1, it is characterised in that the Breadth Maximum of first cutter hub (2) is equal to
The Breadth Maximum of four times of second cutter hubs (6).
3. fish tail knife in center according to claim 1, it is characterised in that the top of first cutter hub (2) is isosceles three
It is angular, and the angular range of the apex angle α 1 of first cutter hub (2) is 118 °~150 °, the top of two second cutter hubs (6)
Portion is right angled triangle, and the first right-angle side of two second cutter hubs (6) is each attached on first cutter hub (2), and two
The angular range of the hypotenuse of individual second cutter hub (6) and the angle α 2 of the first right-angle side is 40 °~62 °.
4. fish tail knife in center according to claim 3, it is characterised in that first cutter hub (2) and second cutter hub
(6) drift angle is respectively arranged with the first hard alloy blocks (10a).
5. fish tail knife in center according to claim 1, it is characterised in that the surface of second hard alloy blocks (10b)
Covered with wearing layer (14).
6. fish tail knife in center according to claim 1, it is characterised in that the tool rest (1) includes the cone-shaped bearing of water chestnut
(1a) and the tool rest mounting seat (1b) for being fixed on the bearing (1a) bottom, screw is set to install on the tool rest mounting seat (1b)
Hole (1c), the tool rest mounting seat (1b) are arranged on the cutterhead by screw, and the additive injection block mounting hole (5) is opened
It is located on the bearing (1a), the bottom of the additive injection block (4) enters hole (4a), the tool rest mounting seat provided with additive
The position that (1b) corresponding described additive enters hole (4a) offers additive delivery tube mounting hole (11), and additive delivery tube is located at
In the additive delivery tube mounting hole (11) and enter hole (4a) with the additive to connect.
7. fish tail knife in center according to claim 6, it is characterised in that the bottom of the tool rest mounting seat (1b) is provided with
The positioning boss (12) to match with the cutterhead.
8. fish tail knife in center according to claim 6, it is characterised in that the hole wall that the additive enters hole (4a) is provided with
Internal thread, the additive delivery tube and the additive injection block (4) are connected through a screw thread.
9. fish tail knife in center according to claim 6, it is characterised in that the tool rest mounting seat (1b) is kidney ellipsoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510733082.5A CN105370292B (en) | 2015-11-02 | 2015-11-02 | A kind of center fish tail knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510733082.5A CN105370292B (en) | 2015-11-02 | 2015-11-02 | A kind of center fish tail knife |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370292A CN105370292A (en) | 2016-03-02 |
| CN105370292B true CN105370292B (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510733082.5A Active CN105370292B (en) | 2015-11-02 | 2015-11-02 | A kind of center fish tail knife |
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| CN (1) | CN105370292B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761844B (en) * | 2017-03-31 | 2019-11-22 | 中交天和机械设备制造有限公司 | Shield machine fish tail knife slip-casting mud mouth |
| CN106869954B (en) * | 2017-03-31 | 2020-03-20 | 中交天和机械设备制造有限公司 | Fishtail cutter assembly for shield machine |
| CN107448207A (en) * | 2017-09-30 | 2017-12-08 | 中铁工程装备集团有限公司 | The preceding dress removable fish tail knife of piecemeal |
| CN110424980B (en) * | 2019-08-28 | 2020-10-20 | 盾构及掘进技术国家重点实验室 | A guide-type entry driving machine blade disc in advance for extremely hard rock excavation |
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|---|---|---|---|---|
| CN202012354U (en) * | 2010-12-23 | 2011-10-19 | 北京华隧通掘进装备有限公司 | Additive inlet structure for shield excavation machine |
| CN102635363A (en) * | 2012-04-23 | 2012-08-15 | 武汉船用机械有限责任公司 | Shield machine, and additive injection port and additive injection device for shield machine |
| CN103061775A (en) * | 2012-11-15 | 2013-04-24 | 山东天工岩土工程设备有限公司 | Fishtail center cutter for shield machine |
| CN204386605U (en) * | 2014-12-22 | 2015-06-10 | 武汉船用机械有限责任公司 | A kind of fish tail cutter of the split-type structural for shield machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3220382B2 (en) * | 1996-07-10 | 2001-10-22 | 株式会社奥村組 | Shield excavator cutter head |
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2015
- 2015-11-02 CN CN201510733082.5A patent/CN105370292B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202012354U (en) * | 2010-12-23 | 2011-10-19 | 北京华隧通掘进装备有限公司 | Additive inlet structure for shield excavation machine |
| CN102635363A (en) * | 2012-04-23 | 2012-08-15 | 武汉船用机械有限责任公司 | Shield machine, and additive injection port and additive injection device for shield machine |
| CN103061775A (en) * | 2012-11-15 | 2013-04-24 | 山东天工岩土工程设备有限公司 | Fishtail center cutter for shield machine |
| CN204386605U (en) * | 2014-12-22 | 2015-06-10 | 武汉船用机械有限责任公司 | A kind of fish tail cutter of the split-type structural for shield machine |
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| CN105370292A (en) | 2016-03-02 |
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