CN208650858U - Development machine and its knife of backbreaking - Google Patents
Development machine and its knife of backbreaking Download PDFInfo
- Publication number
- CN208650858U CN208650858U CN201821451079.XU CN201821451079U CN208650858U CN 208650858 U CN208650858 U CN 208650858U CN 201821451079 U CN201821451079 U CN 201821451079U CN 208650858 U CN208650858 U CN 208650858U
- Authority
- CN
- China
- Prior art keywords
- knife
- backbreaking
- driver
- cutter
- guide rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Knives (AREA)
Abstract
The utility model discloses development machine and its knives of backbreaking.Wherein, the knife of backbreaking of development machine, including hollow cutterhead and the driver being installed on inside cutterhead, one end of cutterhead is provided with bottom plate, the other end of cutterhead is equipped with the guide rail sleeve of coaxial arrangement and both ends open, one end of driver is detachably connected bottom plate, the other end of driver is removably connected with and the matched knife bar of guide rail sleeve, knife bar is protruded into guide rail sleeve and can be stretched under the driving of above-mentioned driver along the extending direction of guide rail sleeve, cutter has been removably installed on knife bar, cutterhead side is provided with for driver, the installing port of knife bar and cutter disengaging.The replacement for knife of backbreaking can be fast implemented, knife replacement efficiency of backbreaking is improved, reduces construction cost, improve working security.The development machine of the utility model includes above-mentioned knife of backbreaking.
Description
Technical field
The utility model relates to heading equipment fields, more particularly to a kind of knife of backbreaking of development machine.In addition, this is practical new
Type further relates to a kind of development machine including above-mentioned knife of backbreaking.
Background technique
Development machine be it is main using tool in current underground tunnel project, be widely used in city underground, water conservancy
The infrastructural projects such as water power, railway, highway.Usual development machine is in turning, correction operation or before replacement outermost hobboing cutter,
It is required to carry out radial dig to tunnel using knife is backbreak.As it can be seen that knife of backbreaking is one of the important cutter that combined type cutterhead is equipped with.
Knife of backbreaking once is seriously worn or damages, by development machine dig ability and construction efficiency brings extreme influence.
When more renew backbreak knife when, existing method be first cut off oil cylinder cover board, and need in the side for backbreaking cutter position
Face hole wall digs cavern, then replaces cutter of backbreaking using cavern space by operating personnel.This operation mode needs are manually opened
The multiplexings kind such as welding cooperates in chisel, hole, and operating process is cumbersome and operation risk is high, and construction efficiency is low, seriously affects and applies
Work progress.
Therefore, how one kind is provided and both meets function of backbreaking, while can realize safe and convenient more in limited, adverse circumstances
The knife of backbreaking changed is a technical problem that technical personnel in the field need to solve at present.
Utility model content
The purpose of the utility model is to provide a kind of knife of backbreaking of development machine, cutterhead side is equipped with installing port, and each component can
To carry out dismounting and change by installing port, both meet function of backbreaking, while can realize safe and convenient more in limited, adverse circumstances
It changes.The another object of the utility model is to provide a kind of development machine including above-mentioned knife of backbreaking.
In order to solve the above technical problems, the utility model provides a kind of knife of backbreaking of development machine, including hollow cutterhead and
The driver being installed on inside the cutterhead, one end of the cutterhead are provided with bottom plate, and the other end of the cutterhead is equipped with together
The guide rail sleeve of axis setting and both ends open, one end of the driver are detachably connected the bottom plate, the driver it is another
One end, which is removably connected with, to be protruded into the guide rail sleeve with the matched knife bar of guide rail sleeve, the knife bar and can be upper
The extending direction for stating guide rail sleeve described in the driving lower edge of driver is flexible, and cutter, institute have been removably installed on the knife bar
It states cutterhead side and is provided with the installing port passed in and out for the driver, the knife bar and the cutter.
Preferably, the outer end of the knife bar is provided with inclined-plane, and inclined mounting groove, the installation are provided on the inclined-plane
The two sides of slot are provided with the first threaded hole, and the cutter two sides are provided with connector, the Cutting tool installation manner in the mounting groove,
And the connector is adjacent to the inclined-plane by being set to the ambilateral briquetting of the knife, the briquetting is bolted by first
First threaded hole.
Preferably, sealing ring is provided on the guide rail sleeve lining.
Preferably, the driver is specially hydraulic cylinder.
Preferably, the first cover board and second set gradually along the driver transmission direction is installed at the installing port
Cover board, the cutterhead inside is provided with the supporting element for driver described in radial positioning close to one end of the bottom plate, described
Second cover board is set to the position of the corresponding supporting element.
Preferably, on the bottom plate and inner end of the knife bar is provided with otic placode, and the both ends of the driver are provided with
Hanging ring, the hanging ring are bolted the corresponding otic placode by connecting pin and second.
Preferably, the cutter is specially double-edged hobbing cutter, serrated knife or tearing cutter.
Preferably, the guide rail sleeve and the cutterhead junction have been removably installed anti-torsion plate, in the anti-torsion plate
Portion is provided with anti-torsion slot, and the anti-two sidewalls for turning round slot are plane, and the two sides of the inner end of the knife bar are provided with and the anti-torsion
The matched plane of slot, the inner end of the knife bar pass through the anti-torsion slot and connect the driver.
Preferably, the anti-edge for turning round plate is evenly arranged with multiple through-holes, and the anti-plate of turning round is by passing through through-hole
Third is bolted the guide rail sleeve.
The utility model provides a kind of development machine, including rack and is installed on the knife of backbreaking of the rack, described to backbreak
Knife is specially knife of backbreaking described in above-mentioned any one.
The utility model provides a kind of knife of backbreaking of development machine, including hollow cutterhead and the driving being installed on inside cutterhead
Device, one end of cutterhead are provided with bottom plate, and the other end of cutterhead is equipped with the guide rail sleeve of coaxial arrangement and both ends open, driver
One end be detachably connected bottom plate, the other end of driver is removably connected with to be protruded into the matched knife bar of guide rail sleeve, knife bar
And can be flexible along the extending direction of guide rail sleeve under the driving of above-mentioned driver in guide rail sleeve, removably pacify on knife bar
Equipped with cutter, cutterhead side is provided with the installing port for the disengaging of driver, knife bar and cutter.
In the course of work driver can trigger shaft stretch out, and then with cutter protruding rail sleeve, realize to area
Face digs function, brings great convenience for constructions such as development machine turning, correction and replacement outermost cutters, needs replacing cutter
When, connector is removed, driver is taken out by installing port, knife bar and cutter is removed along guide rail sleeve, and taken out by installing port, tears open
Except cutter fastener, the replacement of cutter is completed immediately.Cutter can take out on rear side of the cutterhead along guide rail sleeve, without from knife side of backbreaking
Cavern is dug in face, can fast implement the replacement for knife of backbreaking, and is improved knife replacement efficiency of backbreaking, is reduced construction cost, improve construction
Safety.
The utility model also provides a kind of development machine including above-mentioned knife of backbreaking, since above-mentioned cutter of backbreaking has above-mentioned technology
Effect, above-mentioned development machine should also have same technical effect, no longer be discussed in detail herein.
Detailed description of the invention
Fig. 1 is a kind of schematic front view of specific embodiment of knife provided by the utility model of backbreaking；
Fig. 2 is the A-A partial sectional view of knife provided by the utility model of backbreaking in Fig. 1；
Fig. 3 is the B-B partial sectional view of knife provided by the utility model of backbreaking in Fig. 1；
Fig. 4 is a kind of disassembly process figure of specific embodiment of knife provided by the utility model of backbreaking；
Fig. 5 is a kind of disassembly completion figure of specific embodiment of knife provided by the utility model of backbreaking.
Specific embodiment
The core of the utility model is to provide a kind of knife of backbreaking of development machine, and cutterhead side is equipped with installing port, and each component can
To carry out dismounting and change by installing port, both meet function of backbreaking, while can realize safe and convenient more in limited, adverse circumstances
It changes.Another core of the utility model is to provide a kind of development machine including above-mentioned knife of backbreaking.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Fig. 1 to Fig. 5 is please referred to, Fig. 1 is a kind of main view of specific embodiment of knife provided by the utility model of backbreaking
Schematic diagram；Fig. 2 is a kind of A of specific embodiment of knife provided by the utility model of backbreaking to cross-sectional view；Fig. 3 is that this is practical
Backbreak provided by novel knife a kind of specific embodiment B to cross-sectional view；Fig. 4 is knife provided by the utility model of backbreaking
A kind of specific embodiment disassembly process figure；Fig. 5 is a kind of specific embodiment party of knife provided by the utility model of backbreaking
Figure is completed in the disassembly of formula.
Specific embodiment of the present invention provides a kind of knife of backbreaking of development machine, including cutterhead 2, driver 3, knife bar 6
With cutter 8.Cutterhead 2 is hollow, and one end far from equipment is provided with opening, and one end close to equipment is provided with bottom plate, and driver 3 is set
It is placed in the inside of cutterhead 2, one end of driver 3 is detachably connected bottom plate, and the other end of driver 3 is detachably connected knife bar 6.
Cutterhead 2 is provided with one end connection guide rail sleeve 1 of opening, and 1 both ends of guide rail sleeve are opening, wherein connection knife open at one end
The opening of disk 2, and the two is coaxially disposed, and forms one along same linearly extended space, the one end in this space is bottom plate,
The other end is the extraneous opening of connection, and cutterhead 2 can be connect by welding with guide rail sleeve 1, and bolt company can also be used
It the modes such as connects to be attached.The shape of knife bar 6 is matched with the internal structure of guide rail sleeve 1, and knife bar 6 protrudes into guide rail sleeve 1,
And can be flexible along the extending direction of guide rail sleeve 1 under the driving of driver 3, cutter 8 has been removably installed on knife bar 6,
Cutter 8 stretches out in opening of the guide rail sleeve 1 far from 2 one end of cutterhead, can extend out to the external world.The stretching direction of driver 3 with
The extending direction of guide rail sleeve 1 is identical, and 2 side of cutterhead is provided with the installation for the disengaging of driver 3, knife bar 6 and cutter 8
Mouthful.
In the course of work driver 3 can trigger shaft 6 stretch out, and then with 8 protruding rail sleeve 1 of cutter, realize pair
Face digs function, brings great convenience for constructions such as development machine turning, correction and replacement outermost cutters, needs replacing knife
When having 8, connector is removed, driver 3 is taken out by installing port, removes knife bar 6 and cutter 8 along guide rail sleeve 1, and by installing port
It takes out, removes cutter fastener, complete the replacement of cutter 8 immediately.Cutter 8 can take out on rear side of cutterhead 2 along guide rail sleeve 1, nothing
Cavern need to be dug from knife side of backbreaking, the replacement for knife of backbreaking can be fast implemented, improve knife replacement efficiency of backbreaking, reduction is constructed into
This, improves working security.
In the knife of backbreaking that specific embodiment of the present invention provides, according to the needs of excavation, cutter 8, which needs to tilt, to be set
It sets, i.e., there is certain angle with the extending direction of guide rail sleeve 1, the outer end of knife bar 6 is provided with inclined-plane, is provided on inclined-plane
Inclined mounting groove, perpendicular to inclined-plane, cutter 8 is installed in mounting groove and with the inclination of mounting groove the depth direction of mounting groove
Angle and tilt.Specifically, the first threaded hole is provided on the inclined-plane of mounting groove two sides, 8 two sides of cutter are provided with connector,
According to circumstances connector can be provided at the rotation center of cutter 8, a part of cutter 8 is put into mounting groove when installation
It is interior, until the connector of two sides offsets with inclined-plane, cutter 8 is prevented further deeply, then to pass through two briquettings 9 of setting, respectively
8 two sides of cutter are installed on, connector is compressed, so that connector is adjacent to inclined-plane, be provided with through-hole on briquetting 9, pass through the first bolt 15
The first threaded hole on openings connection inclined-plane on briquetting 9, realizes the detachable installation of cutter.It can also be in briquetting 9
Through hole be arranged counterbore, for hiding the bolt head of the first bolt 15.Other connection types can also be used, such as setting buckle card
It connects or realizes connection by other compressing members, both be within the protection scope of the present invention.
It is provided with sealing ring 7 on 1 inner wall of guide rail sleeve, when knife bar 6 moves reciprocatingly along 1 inner cavity of guide rail sleeve, knife
6 periphery of bar and guide rail sleeve 1 are fitted close, and the entrance of extraneous dregs, muddy water can be prevented by sealing ring 7, and improving equipment can
By property.
In the knife of backbreaking that specific embodiment of the present invention provides, driver 3 is hydraulic cylinder, and hydraulic cylinder is stretched
Contracting is oriented parallel to the extending direction of guide rail sleeve 1, cylinder part connecting bottom board, and piston rod extension end connects knife bar 6, can also adopt
It is driven with motor driven and by specific transmission mechanism.Cutter 8 can be replaced according to the actual working conditions, such as
Using double-edged hobbing cutter, serrated knife or tearing cutter etc..
The inside of cutterhead 2 is divided into two parts, and the part close to bottom plate is provided with inwardly protruded supporting element, with driver 3
Outer wall offset, realize to the radial positioning of driver 3.In order to protect internal structure, prevents foreign matter from entering, need to installing port
It is closed, it is therefore desirable to which cover closure installing port is set.Specifically, the first cover board 11 and the second lid are installed at installing port
Plate 12 is set gradually along 3 transmission direction of driver, and installing port is completely covered in guarantee, wherein the second cover board 12 is set to pair
Answer the position of supporting element.By the way that two cover boards 11 are arranged, the openings of sizes of different location at installing port is adapted to, cover board and installation are made
Mouth perfect cooperation, while the thickness of adjustment cover board as needed, it is small the case where satisfaction needs to save material as far as possible.Cover board can be with
It is connect by bolt with cutterhead 2, can also be connected by modes such as buckle or sliding slots, can according to circumstances adjust quantity and the company of cover board
Mode is connect, both is within the protection scope of the present invention.
In the knife of backbreaking that specific embodiment of the present invention provides, on the bottom plate and inner end of knife bar 6 is provided with ear
Plate 14, the both ends of driver 3 are provided with hanging ring, and hanging ring connects corresponding otic placode 14 by connecting pin 4 and the second bolt 5.Certainly
Other connection types can also be used, such as using clamping or be threadedly coupled mode.
Above-mentioned each specific embodiment provide backbreak knife on the basis of, guide rail sleeve 1 and 2 junction of cutterhead are detachable
Ground is equipped with anti-torsion plate 10, and anti-torsion slot is provided in the middle part of anti-torsion plate 10, and the anti-two sidewalls for turning round slot are plane, i.e., sets on anti-torsion plate 10
It is equipped with a U-type groove, knife bar 6 is a multi-diameter shaft, and outer end (connecting one end of cutter 8) is relatively large in diameter and guide rail sleeve 1
Inner wall cooperation, inner end the one end of driver 3 (connect) diameter is smaller to be cooperated with anti-torsions slot, and the inner end of knife bar 6 is across anti-torsion
Slot connects driver 3, and the two sides of the inner end of knife bar 6, which are provided with, to be pressed from both sides with the matched plane of anti-torsion slot, i.e., anti-torsion plate 10 by U-type groove
Hold the inner end of knife bar 6, for anti-torsion plate 10 perpendicular to knife bar 6, and since contact surface is the plane being bonded to each other, knife bar 6 can only phase
Anti- torsion plate 10 is moved in a straight line, and cannot achieve rotary motion, prevents cutter 8 from reversing.
Specifically, anti-torsion plate 10 can be connect by third bolt 13 with guide rail sleeve 1, equal in the anti-edge for turning round plate 10
Even to be provided with multiple through-holes, third bolt 13 passes through the third threaded hole on through-hole connection 1 inner face of guide rail sleeve, can also pass through
Be threadedly coupled or be clamped etc..
Hydraulic cylinder is flexible in the course of work, and trigger shaft 6 is flexible, and then guide rail sleeve is stretched out or retracted with cutter 8
1, realization digs function to face, brings great convenience for constructions such as development machine turning, correction and replacement outermost cutters,
When 8 serious wear of cutter or damage, when needing to change cutter 8.First the first cover board successively is removed from 2 rear portion of cutterhead
11 and second cover board 12, installing port is opened, removes the second bolt 5 and connecting pin 4 that hydraulic cylinder is connected with otic placode 14 respectively, by
Installing port takes out hydraulic cylinder, removes the anti-third bolt 13 for turning round plate 10 of fastening, anti-torsion plate 10 is removed, then along guide rail sleeve
Cylinder 1 exits knife bar 6 and cutter 8, and has installing port taking-up, removes briquetting 9 and the first bolt 15, and cutter of completing to backbreak immediately is torn open
It unloads, is then operated according to the opposite step of disassembly when reinstalling.
In addition to above-mentioned knife of backbreaking, specific embodiment of the present utility model also provides a kind of driving including above-mentioned knife of backbreaking
Machine, refer to the prior art for the structure of other each sections of the development machine, and repeats no more herein.
Development machine provided by the utility model and its knife of backbreaking are described in detail above.Tool used herein
Body example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand
The method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not taking off
Under the premise of from the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification
It also falls into the protection scope of the utility model claims.
Claims (10)
1. a kind of knife of backbreaking of development machine, which is characterized in that including hollow cutterhead (2) and be installed on the cutterhead (2) inside
Driver (3), one end of the cutterhead (2) is provided with bottom plate, and the other end of the cutterhead (2) is equipped with coaxial arrangement and two
The guide rail sleeve (1) of end opening, one end of the driver (3) are detachably connected the bottom plate, the driver (3) it is another
End is removably connected with to be protruded into the guide rail sleeve (1) with the matched knife bar of the guide rail sleeve (1) (6), the knife bar (6)
And the extending direction of the guide rail sleeve (1) described in the driving lower edge of the driver (3) is flexible, it can on the knife bar (6)
It is releasably equipped with cutter (8), cutterhead (2) side is provided with for the driver (3), the knife bar (6) and described
The installing port of cutter (8) disengaging.
2. knife according to claim 1 of backbreaking, which is characterized in that the outer end of the knife bar (6) is provided with inclined-plane, described oblique
Inclined mounting groove is provided on face, the two sides of the mounting groove are provided with the first threaded hole, and cutter (8) two sides are provided with
Connector, the cutter (8) are installed in the mounting groove, and the connector is by being set to the cutter (8) two sides
Briquetting (9) is adjacent to the inclined-plane, and the briquetting (9) connects first threaded hole by the first bolt (15).
3. knife according to claim 2 of backbreaking, which is characterized in that be provided with sealing ring on guide rail sleeve (1) inner wall
(7)。
4. knife according to claim 1 of backbreaking, which is characterized in that the driver (3) is specially hydraulic cylinder.
5. knife according to claim 1 of backbreaking, which is characterized in that be equipped at the installing port along the driver (3)
The first cover board (11) and the second cover board (12) that transmission direction is set gradually, the cutterhead (2) are internal close to the one of the bottom plate
End is provided with the supporting element for driver described in radial positioning (3), and second cover board (12) is set to the corresponding support
The position of part.
6. knife according to claim 1 of backbreaking, which is characterized in that on the bottom plate and inner end of the knife bar (6) is all provided with
It is equipped with otic placode (14), the both ends of the driver (3) are provided with hanging ring, and the hanging ring passes through connecting pin (4) and the second bolt (5)
Connect the corresponding otic placode (14).
7. knife according to claim 1 of backbreaking, which is characterized in that the cutter (8) is specially double-edged hobbing cutter, serrated knife or tears
Split knife.
8. according to claim 1 to knife of backbreaking described in 7 any one, which is characterized in that the guide rail sleeve (1) and the knife
Disk (2) junction has been removably installed anti-torsion plate (10), is provided with anti-torsion slot, the anti-torsion slot in the middle part of the anti-torsion plate (10)
Two sidewalls be plane, the two sides of the inner end of the knife bar (6) are provided with and the matched plane of the anti-torsion slot, the knife bar
(6) inner end passes through the anti-torsion slot and connects the driver (3).
9. knife according to claim 8 of backbreaking, which is characterized in that the anti-edge for turning round plate (10) is evenly arranged with more
A through-hole, anti-turn round plate (10) pass through third bolt (13) the connection guide rail sleeve (1) across through-hole.
10. a kind of development machine, including rack and it is installed on the knife of backbreaking of the rack, which is characterized in that the cutter of backbreaking
Body is knife of backbreaking described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821451079.XU CN208650858U (en) | 2018-09-05 | 2018-09-05 | Development machine and its knife of backbreaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821451079.XU CN208650858U (en) | 2018-09-05 | 2018-09-05 | Development machine and its knife of backbreaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208650858U true CN208650858U (en) | 2019-03-26 |
Family
ID=65792343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821451079.XU Withdrawn - After Issue CN208650858U (en) | 2018-09-05 | 2018-09-05 | Development machine and its knife of backbreaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208650858U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825257A (en) * | 2018-09-05 | 2018-11-16 | 中国铁建重工集团有限公司 | Development machine and its knife of backbreaking |
| CN113374491A (en) * | 2021-07-22 | 2021-09-10 | 中国铁建重工集团股份有限公司 | Tunnel boring machine overexcavation device |
| CN114458324A (en) * | 2022-02-10 | 2022-05-10 | 广州市力劲机电有限公司 | Shield hobbing cutter |
-
2018
- 2018-09-05 CN CN201821451079.XU patent/CN208650858U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825257A (en) * | 2018-09-05 | 2018-11-16 | 中国铁建重工集团有限公司 | Development machine and its knife of backbreaking |
| CN108825257B (en) * | 2018-09-05 | 2023-10-20 | 中国铁建重工集团股份有限公司 | Heading machine and super-digging cutter thereof |
| CN113374491A (en) * | 2021-07-22 | 2021-09-10 | 中国铁建重工集团股份有限公司 | Tunnel boring machine overexcavation device |
| CN114458324A (en) * | 2022-02-10 | 2022-05-10 | 广州市力劲机电有限公司 | Shield hobbing cutter |
| CN114458324B (en) * | 2022-02-10 | 2022-08-23 | 广州市力劲机电有限公司 | Shield hobbing cutter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208650858U (en) | Development machine and its knife of backbreaking | |
| CN104526297B (en) | Auxiliary cutter replacing device for shield tunneling machine cutter in tunnel | |
| CN106737446A (en) | Hand-held tool and its clamping device | |
| JP2011006932A (en) | Bit replacement device for excavator | |
| CN105507911A (en) | Shield machine and cutter head thereof | |
| CN205224647U (en) | Multi -functional hydraulic pressure is cut | |
| CN108825257A (en) | Development machine and its knife of backbreaking | |
| CN105408555A (en) | Tool retention system | |
| CN108825258A (en) | Development machine and its knife of backbreaking | |
| CN202325536U (en) | Replaceable mounting structure for center cutter with self-rotation function | |
| CN209855796U (en) | Tunnel boring machine is with detecting tool changing robot | |
| CN112523756A (en) | Shaft heading machine and slag scraping plate assembly for shaft cutter head | |
| CN110259469B (en) | Shield machine and shield machine cutter head thereof | |
| CN109881726B (en) | Connecting structure applied between excavator bucket rod and executing component | |
| CN208650859U (en) | Development machine and its knife of backbreaking | |
| CN108708424B (en) | Quick-change bucket tooth of excavator | |
| CN203547737U (en) | Telescopic device for transverse shaft heading machine cutting portion | |
| CN216446918U (en) | Sliding normal pressure tool changing device | |
| CN210343350U (en) | Shield constructs machine and blade disc thereof | |
| CN210758077U (en) | Wheel cutter device with blade cooling function and capable of cutting strongly | |
| CN213289970U (en) | Car pincers are torn open to smart tearing open | |
| CN210316664U (en) | Concrete-steel structure hydraulic shear capable of being replaced quickly | |
| CN205857269U (en) | Excavator Quick Connect Kit | |
| CN211342920U (en) | Variable-track side hobbing cutter structure of shield tunneling machine and cutter head of shield tunneling machine | |
| CN209811310U (en) | Detachable drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: China Railway Construction Heavy Industry Co.,Ltd. Address before: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: China Railway Construction Heavy Industry Co.,Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190326 Effective date of abandoning: 20231020 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190326 Effective date of abandoning: 20231020 |