CN209144908U - A kind of shoveling equipment locking teeth device - Google Patents
A kind of shoveling equipment locking teeth device Download PDFInfo
- Publication number
- CN209144908U CN209144908U CN201821798224.1U CN201821798224U CN209144908U CN 209144908 U CN209144908 U CN 209144908U CN 201821798224 U CN201821798224 U CN 201821798224U CN 209144908 U CN209144908 U CN 209144908U
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- Prior art keywords
- pin
- toothholder
- cutter tooth
- cavity
- fillet
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- Withdrawn - After Issue
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- 239000000463 material Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000037237 body shape Effects 0.000 description 3
- 210000000481 breast Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 208000008312 Tooth Loss Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Component Parts Of Construction Machinery (AREA)
Abstract
The utility model relates to a kind of shoveling equipment locking teeth devices, belong to shoveling equipment technical field, and including the cutter tooth, toothholder and lock pin being attached on shoveling equipment, cutter tooth is fixed on toothholder by lock pin；Cutter tooth includes land, support portion, cavity and flange, and land is located at the front end of cutter tooth, and cavity is located at the rear end of cutter tooth, and land is connect by support portion with cavity, the rear upper end of flange side wall within the cavity；Toothholder can be nested in cavity, and toothholder includes the toothholder body with cavity cooperation, and the upper back of toothholder body has the groove for placing lock pin, and the rear side of groove has hole；Lock pin includes pin and pin block, and pin and pin block are connected through a screw thread.Lock pin is placed in abrasion of the inside of toothholder and cutter tooth so as to avoid extraneous ground to lock pin, also avoids falling tooth problem caused by the falling off of lock pin.The utility model is dismounted easily, and the structure of locking teeth device is safe and reliable, reduces the disassembly and assembly time of cutter tooth, improves the service efficiency of shoveling equipment.
Description
Technical field
The utility model belongs to shoveling equipment technical field, more particularly to a kind of shoveling equipment locking teeth device.
Background technique
During excavating ground, cutter tooth and ground interact shoveling equipment, as the operating condition for excavating soil property is more next
It is more complicated, it is incident to wear the reduction for directly resulting in the service life of shoveling equipment ontology.It is more outstanding to be, this abrasion
It is present not only on cutter tooth, and includes even shoveling equipment ontology including toothholder.In general, shoveling equipment ontology itself
Price is higher by much than toothholder and cutter tooth, and the replacement of toothholder is more complicated than the replacement of tooth.
The connection type of the traditional more extensive cutter tooth of application and toothholder is a kind of impact type lock pin.This lock pin needs
Sufficiently large impact force uses primary rear basic report although connection, than stronger, lock pin deformation is serious in shots
It is useless.In addition, this impact type lock pin also results in the difficulty of dismounting, or even needs that cutter tooth or toothholder destruction could be dismantled, sternly
Construction efficiency is affected again.
The patent of Sweden also proposed a kind of tooth system suitable for reamer, and the program is for shoveling equipment in the process of dredging
The cutter tooth of middle appearance and the wear problem of toothholder, not only cutter tooth replacement is rapid, but also effectively protects toothholder, but the program
Middle lock pin processing is sufficiently complex and higher to the required precision of installation, so as to cause difficult to install.This dismounting problem still may be used
It can make cutter tooth, toothholder or shoveling equipment ontology are damaged.
HOII P proposes a kind of cutter tooth suitable on reamer and toothholder system, and the program is ground for the cutter tooth of reamer
Damage problem realizes the quick-replaceable of cutter tooth.But the program requires the accuracy of screw machining requirement to lock pin very high, and
There is wear problem during being used for multiple times in the screw thread of lock pin, and may cause the failure of lock pin, so as to cause the de- of cutter tooth
It falls, even results in reamer ontology and be damaged.
Summary of the invention
In view of the problems of the existing technology, the utility model provides a kind of shoveling equipment locking teeth device, the lock
Tight tooth device is simple with structure, assembly is compact, be easy to implement, manufacturing cost is low, economical and practical, construction efficiency is high, is applicable in model
Enclose the features such as wide.
The utility model is realized in this way a kind of shoveling equipment locking teeth device, which includes attachment
Cutter tooth, toothholder and lock pin on shoveling equipment, the cutter tooth are fixed on toothholder by lock pin；The cutter tooth include land,
Support portion, cavity and flange, the land are located at the front end of cutter tooth, and the cavity is located at the rear end of cutter tooth, and the land passes through
Support portion is connect with cavity, the rear upper end of the flange side wall within the cavity；The toothholder can be nested in cavity, the tooth
Seat includes the toothholder body with cavity cooperation, and the upper back of the toothholder body has the groove for placing lock pin, the rear side of the groove
With hole；The lock pin includes pin and pin block, and the pin and the pin block are connected through a screw thread.
In the above-mentioned technical solutions, it is preferred that the land, support portion and cavity are located on the longitudinal axis extension line of cutter tooth.
In the above-mentioned technical solutions, it is preferred that the outside top and the bottom of the cavity wall of cavity are respectively provided with fillet one and fillet two,
The inside top and the bottom of the cavity wall are respectively provided with fillet three and fillet four, and the size of the fillet one is less than or equal to fillet two, institute
The size for stating fillet three is less than or equal to fillet four.
In the above-mentioned technical solutions, it is preferred that the top and the bottom of the toothholder body are respectively provided with fillet five and fillet six, described
The size of fillet five is less than or equal to fillet six.
In the above-mentioned technical solutions, it is preferred that interior lateral bend of the flange to cavity.
In the above-mentioned technical solutions, it is preferred that the quantity of the flange is at least one.
In the above-mentioned technical solutions, it is preferred that the pin has external screw thread, and the pin block has circular through hole, described
Circular through hole has the internal screw thread cooperated with external screw thread.
In the above-mentioned technical solutions, it is preferred that be installed with boss on the pin, the pin cap of the boss and pin it
Between there is fixed spacing, pin cap is placed in the hole of toothholder, has pin cap counterbore on pin cap.
In the above-mentioned technical solutions, it is further preferred that being inserted with gasket on pin between the boss and pin cap
One, gasket two and gasket three are successively equipped on the pin between the boss and pin block.
In the above-mentioned technical solutions, still more preferably, the gasket one, gasket two and gasket three are one settable
Or it is multiple.
In the above-mentioned technical solutions, still more preferably, the gasket three is made of rubber material.
Compared with prior art, the utility model has the advantages and positive effects of:
1, the utility model improves the degree of reliability that cutter tooth is connected with toothholder, and in the construction process, lock pin is in cutter tooth
Between toothholder, it is protected it to reduce abrasion；And prevented a possibility that lock pin falls off, it avoids because lock pin is de-
Cutter tooth loses the invalid wear phenomenon with toothholder caused by falling；
2, the lock pin disassembly of the utility model is simple, time saving and energy saving, reduces person works' intensity, avoids traditional weight
Hammer impact type cutter tooth system into shape, replacement cutter tooth is simple, constructs and stagnates caused by reducing due to changing tooth, improves the benefit of shoveling equipment
With rate, that is, improve the construction efficiency of shoveling equipment.
3, the locking teeth apparatus structure of the utility model is simple, assembly is compact, be easy to implement, manufacturing cost is low, economic reality
It is high, applied widely with, construction efficiency.
Detailed description of the invention
Fig. 1 is the cutter tooth for the locking teeth device that the embodiments of the present invention provide and the structural schematic diagram of toothholder locking；
Fig. 2 is the structural schematic diagram that the cutter tooth for the locking teeth device that the embodiments of the present invention provide is separated with toothholder
One；
Fig. 3 is the structural schematic diagram that the cutter tooth for the locking teeth device that the embodiments of the present invention provide is separated with toothholder
Two；
Fig. 4 is the structural schematic diagram for the cutter tooth that the embodiments of the present invention provide；
Fig. 5 is the structural schematic diagram for the toothholder that the embodiments of the present invention provide；
Fig. 6 is the structural schematic diagram for the lock pin assembling that the embodiments of the present invention provide；
Fig. 7 is the unassembled structural schematic diagram of the lock pin of the embodiments of the present invention offer.
In figure: 1- locking teeth device, 2- cutter tooth, 3- toothholder, 4- lock pin, 5- land, 6- support portion, 7- cavity, 8- cavity wall,
9- flange, 10- fillet one, 11- fillet two, 12- fillet three, 13- fillet four, 14- cambered surface, 15- toothholder body, 16- groove, 17-
Hole, 18- locating slot, 19- fillet five, 20- fillet six, 21- pin, 22- external screw thread, 23- boss, 24- pin block, 25- circle are logical
Hole, 26- internal screw thread, 27- gasket one, 28- gasket two, 29- gasket three, 30- pin cap, 31- pin cap counterbore.
Specific embodiment
For the invention, features and effects that can further appreciate that the utility model, the following examples are hereby given, and cooperates
Detailed description are as follows for attached drawing:
Embodiment
Refering to fig. 1~Fig. 7, the present embodiment provides a kind of shoveling equipment locking teeth device, which includes attached
The cutter tooth 2 on shoveling equipment, toothholder 3 and lock pin 4, cutter tooth 2 cutter tooth 2 is locked on toothholder 3 by lock pin 4；Cutter tooth 2 wraps
Land 5, support portion 6, cavity 7 and flange 9 are included, land 5 is located at the front end of cutter tooth 2, and cavity 7 is located at the rear end of cutter tooth 2, land 5
It is connect by support portion 6 with cavity 7, flange 9 is located at the rear upper end of 7 inner sidewall of cavity；Toothholder 3 can be nested in cavity 7, toothholder
3 include the toothholder body 15 cooperated with cavity 7, and toothholder body 15 has and the almost consistent shape in inner cavity of cavity 7, ensure that cutter tooth
2 and toothholder 3 during assembly, the two have a preferable compactness.The inner cavity bottom of chamber of cavity 7 is arc in the present embodiment
Shape, the front end of corresponding toothholder body 15 are the cambered surface 14 cooperated with bottom of chamber.The upper back of toothholder body 15, which has, places the recessed of lock pin 4
Slot 16, lock pin 4 are integrally placed in groove 16, and the effect of lock pin 4 is that cutter tooth 2 is locked on toothholder 3.The rear side of groove 16 has
Hole 17, the closed hole Kong Kewei in the present embodiment can also be semienclosed hole (such as U-shaped hole), and semienclosed hole is more
Convenient for casting, the front side of groove 16 may also set up locating slot 18, be more convenient for rotating pin；Lock pin 4 includes pin 21 and pin block 24,
Pin 21 and pin block 24 are connected through a screw thread.
Land 5, support portion 6 and cavity 7 are located on the longitudinal axis extension line of cutter tooth 2, and in mining process, land 5 cuts rock
Soil and the reaction load by ground, this load are transmitted in cavity 7 by support portion 6, and then be transmitted on toothholder 3,
Toothholder 3 is transferred loads to again on shoveling equipment, therefore land 5, support portion 6 and cavity 7 are located on the longitudinal axis extension line of cutter tooth 2
This load can be transmitted effectively to reduce the generation of unnecessary additional bending moment.Land 5 in the present embodiment be along
The cylinder body shape of longitudinal axis, 5 side of land are gradient along longitudinal axis.Land 5 is that approximate cylinder body shape can allow land 5 to hold
By sufficiently large load without phenomenon of rupture, and this cylinder body shape has benefit well in processing and heat treatment
Place so that land 5 be made to obtain sufficiently large hardness, and then reduces the generation of abrasion, also increases the service life of cutter tooth 2.
Flange 9 ensure that the good stress that gasket 2 28 is contacted with flange 9 during installation to the interior lateral bend of cavity 7
State.
The quantity of flange 9 is at least one.In order to improve the secured performance that cutter tooth 2 and toothholder 3 assemble, can also arrange more
A flange or stepped flange, these flanges 9 can contact with gasket 2 28 and cutter tooth 2 are locked on toothholder 3.
The cavity wall 8 of cavity 7 has certain thickness, and the outside top and the bottom of cavity wall 8 are respectively provided with fillet 1 and fillet two
11, the inside top and the bottom of cavity wall 8 are respectively provided with fillet 3 12 and fillet 4 13, and the size of fillet 1 is less than or equal to fillet two
11, the size of fillet 3 12 is less than or equal to fillet 4 13.During cutter tooth 2 cuts ground, fillet 2 11 is compared to circle
Angle 1 is contacted with ground earlier, and abrasion condition is also more prominent.There is fillet 2 11 biggish size can also allow staff
There is apparent identification during cutter tooth 2 are installed, indirectly improve work efficiency.The cavity wall 8 of cavity 7 has certain
Thickness, therefore the size of fillet 3 12 be less than or equal to fillet 4 13 also ensured while guaranteeing 2 working strength of cutter tooth
Good stress performance.
The top and the bottom of toothholder body 15 are respectively provided with fillet 5 19 and fillet 6 20, and the size of fillet 5 19 is less than or equal to fillet
6 20.In working condition, toothholder 3 is nested in the cavity 7 of cutter tooth 2, and fillet 5 19 is contacted with each other with fillet 3 12, fillet
6 20 contact with each other with fillet 4 13.It is worth noting that, the fillet 5 19 and fillet 6 20 along longitudinal axis all have one
Fixed tilt angle ensure that the stability that fillet 5 19 is contacted with fillet 3 12 and fillet 6 20 with fillet 4 13.
It is installed with boss 23 on pin 21, there is fixed spacing, pin between boss 23 and the pin cap 30 of pin 21
Cap 30 is placed in the hole 17 of toothholder 3, has pin cap counterbore 31 on pin cap 30.
One or more gaskets 1, boss 23 can be plugged on pin 21 between boss 23 and pin cap 30 as needed
Gasket 2 28 and gasket 3 29, wearing on gasket 2 28 and gasket 3 29 are successively equipped on pin 21 between pin block 24
Hole enables locking bolt is good to pass through, and perforating is circle.It is worth noting that, gasket 3 29 can have one or more.
When gasket 3 29 has it is multiple when, gasket 2 28 also can have multiple, and 3 29 arranged for interval of gasket 2 28 and gasket.
Pin 21 has external screw thread 22, and pin block 24 has circular through hole 25, and circular through hole 25 has to be cooperated with external screw thread 22
Internal screw thread 26, by rotating pin 21, pin block 24 will move along the axis of pin 21.
Gasket 3 29 is made of rubber material, so that gasket 3 29 has good cushion performance.
The utility model is in specific installation, using following steps:
Step 1: loading onto cutter tooth 2.During installation, fillet 4 13 moves cutter tooth 2 along fillet 6 20, so that the tooth of toothholder 3
Pedestal 15 enters in the cavity 7 of cutter tooth 2.In moving process, the flange 9 of cutter tooth 2 crosses lock pin 4, when reaching designated position, circle
Angle 3 12 and fillet 5 19 are in close contact.
Step 2 tightens pin 21.Rotation tool is placed in pin cap counterbore 31, and pin 21 is revolved clockwise
Turn, during rotation is tightened, gasket 2 28, gasket 3 29 and the pin block 24 of lock pin 4 are along the axis of pin 21 to flange 9
Side is mobile.When reaching designated position, the front end of pin 21 and locating slot 18 are in close contact, the gasket 2 28 and cutter tooth 2 of lock pin 4
Flange 9 be in close contact, the cambered surface 14 of 3 front end of toothholder reaches the bosom of the cavity 7 of cutter tooth 2, as shown in Figure 1.With toothholder 3
Abrasion, cavity 7 also can be very good to contact with the toothholder body 15 of toothholder 3, also can guarantee that the cambered surface 14 of toothholder 3 reaches cutter tooth 2
Cavity 7 bosom.
When making after using for a period of time, cutter tooth 2 must be replaced because of abrasion.In disassembly, using following steps:
Step 1: unscrewing pin 21.Rotation tool is placed in the pin cap counterbore 31 of pin 21, by pin 21 along the inverse time
Needle direction rotates, and during rotation is unscrewed, the gasket 2 28 of lock pin 4 and the flange 9 of cutter tooth 2 are detached from, the gasket two of lock pin 4
28, gasket 3 29 and pin block 24 are moved along the axis of pin 21 to the front end of groove.When reaching designated position, pin block 24 is arrived
Up to the front end of groove 16, gasket 1 reaches the rear end of the groove 16 of toothholder 3, and gasket 1 is limited by boss 23 at this time
And it is immovable, until pin 21 is not able to rotate.It is worth noting that, the front end of pin 21 is possible to be detached from locating slot
18。
Step 2: pulling out cutter tooth 2.Cutter tooth 2 disassembly when, fillet 3 12 is moved along fillet 5 19, fillet 4 13 along
Fillet 6 20 is mobile, and the toothholder body 15 of toothholder 3 is detached from the cavity 7 of cutter tooth 2.In moving process, the flange 9 of cutter tooth 2 crosses lock
Pin 4, when reaching designated position, cutter tooth 2 is separated with toothholder 3, as shown in Figures 2 and 3.
The disassembly of the lock pin of the utility model is simple and time saving and energy saving, avoids traditional weight impact type cutter tooth system.
It is simple to replace cutter tooth, reduces and causes construction stagnation because changing tooth, so improving the utilization rate of shoveling equipment, that is, improve
The construction efficiency of shoveling equipment.Person works' intensity is reduced, while improving the construction efficiency of shoveling equipment.
In the construction process, lock pin is between cutter tooth and toothholder, is protected and is reduced abrasion.Lock pin is prevented
A possibility that falling off avoids the invalid wear phenomenon of cutter tooth loss and toothholder caused by falling off because of lock pin, also just improves knife
The connection reliability of tooth and toothholder.
In the description of the present invention, it should be noted that term " on ", "lower", "front", "rear", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to some or all of the technical features
It is equivalently replaced, and these are modified or replaceed, the utility model embodiment that it does not separate the essence of the corresponding technical solution
The range of technical solution.
Claims (10)
1. a kind of shoveling equipment locking teeth device, which is characterized in that the locking teeth device (1) includes being attached on shoveling equipment
Cutter tooth (2), toothholder (3) and lock pin (4), the cutter tooth (2) is fixed on toothholder (3) by lock pin (4)；The cutter tooth (2)
Including land (5), support portion (6), cavity (7) and flange (9), the land (5) is located at the front end of cutter tooth (2), the cavity
(7) it is located at the rear end of cutter tooth (2), the land (5) is connect by support portion (6) with cavity (7), and the flange (9) is located at chamber
The rear upper end of body (7) inner sidewall；The toothholder (3) can be nested in cavity (7), and the toothholder (3) includes cooperating with cavity (7)
Toothholder body (15), the upper back of the toothholder body (15) has a groove (16) for placing lock pin (4), after the groove (16)
Side has hole (17)；The lock pin (4) includes pin (21) and pin block (24), and the pin (21) and the pin block (24) pass through
It is threadedly coupled.
2. a kind of shoveling equipment locking teeth device according to claim 1, which is characterized in that the land (5), support
Portion (6) and cavity (7) are located on the longitudinal axis extension line of cutter tooth (2).
3. a kind of shoveling equipment locking teeth device according to claim 1, which is characterized in that the cavity wall (8) of cavity (7)
Outside top and the bottom be respectively provided with fillet one (10) and fillet two (11), the inside top and the bottom of the cavity wall (8) are respectively provided with circle
The size of angle three (12) and fillet four (13), the fillet one (10) is less than or equal to fillet two (11), the fillet three (12)
Size is less than or equal to fillet four (13)；The top and the bottom of the toothholder body (15) are respectively provided with fillet five (19) and fillet six (20),
The size of the fillet five (19) is less than or equal to fillet six (20).
4. a kind of shoveling equipment locking teeth device according to claim 1, which is characterized in that the flange (9) is to chamber
The interior lateral bend of body (7).
5. a kind of shoveling equipment locking teeth device according to claim 1, which is characterized in that the number of the flange (9)
Amount is at least one.
6. a kind of shoveling equipment locking teeth device according to claim 1, which is characterized in that the pin (21) has
External screw thread (22), the pin block (24) have circular through hole (25), and the circular through hole (25) has to be cooperated with external screw thread (22)
Internal screw thread (26).
7. a kind of shoveling equipment locking teeth device according to claim 1, which is characterized in that solid on the pin (21)
Equipped with boss (23), there is fixed spacing, pin cap (30) between the boss (23) and the pin cap (30) of pin (21)
It is placed in the hole (17) of toothholder (3), there is pin cap counterbore (31) on pin cap (30).
8. a kind of shoveling equipment locking teeth device according to claim 7, which is characterized in that the boss (23) and pin
Gasket one (27), the pin (21) between the boss (23) and pin block (24) are inserted on pin (21) between bolt cap (30)
On be successively equipped with gasket two (28) and gasket three (29).
9. a kind of shoveling equipment locking teeth device according to claim 8, which is characterized in that the gasket one (27),
Gasket two (28) and the settable one or more of gasket three (29).
10. a kind of shoveling equipment locking teeth device according to claim 8, which is characterized in that the gasket three (29)
It is made of rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821798224.1U CN209144908U (en) | 2018-11-01 | 2018-11-01 | A kind of shoveling equipment locking teeth device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821798224.1U CN209144908U (en) | 2018-11-01 | 2018-11-01 | A kind of shoveling equipment locking teeth device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209144908U true CN209144908U (en) | 2019-07-23 |
Family
ID=67272345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821798224.1U Withdrawn - After Issue CN209144908U (en) | 2018-11-01 | 2018-11-01 | A kind of shoveling equipment locking teeth device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209144908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138039A (en) * | 2018-11-01 | 2019-01-04 | 中交天津航道局有限公司 | A kind of shoveling equipment locking teeth device |
-
2018
- 2018-11-01 CN CN201821798224.1U patent/CN209144908U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138039A (en) * | 2018-11-01 | 2019-01-04 | 中交天津航道局有限公司 | A kind of shoveling equipment locking teeth device |
| CN109138039B (en) * | 2018-11-01 | 2024-04-12 | 中交天津航道局有限公司 | Locking tooth device for excavator |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190723 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190723 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |