CN206768892U - One kind, which is excavated, loads all-in-one - Google Patents
One kind, which is excavated, loads all-in-one Download PDFInfo
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- CN206768892U CN206768892U CN201720113274.0U CN201720113274U CN206768892U CN 206768892 U CN206768892 U CN 206768892U CN 201720113274 U CN201720113274 U CN 201720113274U CN 206768892 U CN206768892 U CN 206768892U
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- 230000005611 electricity Effects 0.000 claims abstract description 14
- 230000004886 head movement Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
Excavated the utility model discloses one kind and load all-in-one, including upper frame, lower vehicle frame, engine and torque-converters, upper frame is provided with operating room, excavator device, lower vehicle frame is provided with loading machine device, front axle and rear axle, front axle, front vehicle wheel is separately installed with rear axle, rear wheel, it is connected between upper frame and lower vehicle frame by slew gear, slew gear divides oil gas electricity body including center steering, pivoting support and pivoting support seat, center steering divides the housing of oil gas electricity body mutually to be fixed with upper frame, center steering divides the mandrel of oil gas electricity body to be fixed on lower vehicle frame, pivoting support is located in upper frame, pivoting support seat is located on lower vehicle frame, excavator device afterbody is relatively fixed with pivoting support, it can be rotated together with operating room relative to lower vehicle frame.After adopting the above technical scheme, provided by the utility model excavate loads all-in-one, 360 ° of rotations can be realized so that possess the excellent properties that excavator and loading machine have completely while increasing revolution working face.
Description
Technical field
The utility model belongs to engineering machinery field, more particularly to a kind of excavate loads all-in-one.
Background technology
Existing engineering machinery is big multi-functional single, and many job sites all need loading machine and excavator to carry out simultaneously
Operation, in the case of limited in place, while into more Construction traffic scene can be caused excessively crowded and can not normally applied
Work, thus need a kind of engineering machinery that can be provided simultaneously with loading machine and excavator function.Existing loader excavator (i.e. two
Head is busy) excavator device and vehicle frame between rotation can only turn 180 °, limit the work capacity of excavator.
Utility model content
In view of the above-mentioned problems, the utility model, which provides a kind of excavate, loads all-in-one, the excavator can be on vehicle frame
360 degree of rotation is carried out, substantially increases operating efficiency.
In order to solve the above technical problems, technical scheme is used by the utility model：One kind, which is excavated, loads all-in-one, bag
Include upper frame, lower vehicle frame, engine and torque-converters, the upper frame is provided with operating room, excavator device, on the lower vehicle frame
Provided with loading machine device, front axle and rear axle, the front axle, rear axle are separately mounted to the rear and front end of lower vehicle frame, institute
State front axle, the left and right ends of rear axle are separately installed with front vehicle wheel, rear wheel, pacify between the front vehicle wheel at the front axle both ends
Equipped with the steering cylinder turned to for front vehicle wheel, between the upper frame and lower vehicle frame by provided with slew gear be connected,
The slew gear divides oil gas electricity body, pivoting support and pivoting support seat including center steering, and the center steering divides oil gas electric
The housing of body is fixedly connected with upper frame, and the center steering divides the mandrel of oil gas electricity body to be fixedly connected on lower vehicle frame, described
Pivoting support is locked in upper frame by bolt, and the pivoting support seat is welded on lower vehicle frame, the excavator device tail
Portion is relatively fixed with pivoting support and is connected, and can be rotated together with operating room relative to lower vehicle frame.
Further, the loading machine device includes loading arm, rotating bucket arm and loader(-mounted) shovel, and the loading arm afterbody is articulated with
Lower vehicle frame, its head are flexibly connected with loader(-mounted) shovel afterbody, and the loading arm realizes pushing away for itself by loading the flexible of oil cylinder one
Movement is made, and the cylinder body afterbody for loading oil cylinder one is movably connected on lower vehicle frame, and the expansion link head movement for loading oil cylinder one is connected to
The middle part of loading arm, the rotating bucket arm middle part are articulated with the middle part of loading arm on the flap of top, and rotating bucket arm head is articulated with dress
On the flap for carrying bucket top, rotating bucket arm drives loader(-mounted) shovel by loading the flexible swing for realizing itself of oil cylinder two
Swing and move up and down, the cylinder body afterbody for loading oil cylinder two is movably connected on the afterbody of loading arm, loads stretching for oil cylinder two
Contracting club head is movably connected on rotating bucket arm afterbody.
Further, the excavator device includes arm and bucket in Support large arm, rotation, the Support large arm afterbody hinge
It is connected on pivoting support, its head is flexibly connected with the afterbody of arm in rotation, and bucket is movably installed in rotation on the head of arm,
The Support large arm excavates the cylinder body afterbody activity of oil cylinder one even by excavating the flexible wobbling action for realizing itself of oil cylinder one
It is connected on pivoting support, the expansion link head movement for excavating oil cylinder one is connected in the middle part of Support large arm on the flap of lower section, institute
Stating arm in rotation, by excavating the flexible wobbling action for realizing itself of oil cylinder two, the cylinder body afterbody for excavating oil cylinder two is flexibly connected
Arm afterbody in rotation is connected in the expansion link head movement in Support large arm, excavating oil cylinder two, the bucket is by excavating oil
The flexible wobbling action for realizing itself of cylinder three, the cylinder body afterbody for excavating oil cylinder three are movably connected in rotation on arm.
Further, it is movably hinged in the rotation between one end of arm and bucket by chain frame, the chain frame includes chain
Frame one and chain frame two, one end of chain frame one and chain frame two are hinged, and the other end of chain frame one is flexibly connected with bucket, chain frame two it is another
One end is articulated with arm one end in rotation, and the one end of the other end for excavating oil cylinder three respectively with chain frame one, chain frame two is hinged.
Further, transfer case, hydraulic motor and universal connecting shaft are additionally provided with the lower vehicle frame, the transfer case is set
It is connected by the first universal connecting shaft at the middle part of lower vehicle frame and with hydraulic motor, is divided between the transfer case and forward and backward vehicle bridge
The second universal connecting shaft Dui Ying not passed through and the 3rd universal connecting shaft is connected.
Further, the center steering divides oil gas electricity body to be made up of housing, mandrel and collector ring, the collector ring
Housing is bolted to connection with housing, is bolted to connection between the mandrel and mandrel of collector ring, in the housing
The heart is through hole, is matched with mandrel, and axially disposed on the face of cylinder of through hole to have some cavitys, cavity is equipped with close between any two
Seal, air drain is offered on position corresponding with air inlet on the face of cylinder of the mandrel, in position corresponding with oil inlet
On offer oil groove, the venthole being connected respectively with air inlet, oil inlet is offered on the lower cylindrical face of the mandrel, is gone out
Oilhole.
Further, the engine can be arranged on upper frame or lower vehicle frame.
Further, front and rear symmetrically arranged two operating platform is provided with the operating room and is arranged on operating room
The rotary seat of middle part operating platform easy to operation.
From the above-mentioned description to the utility model structure, compared to the prior art, the utility model has following excellent
Point：
1st, a kind of excavate provided by the utility model loads all-in-one, is integrated in by using collector ring and mandrel and housing
Together, avoid because angle of revolution caused by collector ring limits, the excavation is loaded all-in-one and realize 360 ° of rotations, greatly
Improve operating efficiency greatly.
2nd, a kind of excavate provided by the utility model loads all-in-one, is got off by using wheel is arranged on by vehicle bridge
On frame, and front vehicle wheel is driven to turn to by steering cylinder so that the excavation loads all-in-one and ensure that car in the case of shoveling
The stability of body center of gravity, and vehicle body has a safety feature when walking at a high speed, direction is steady, be not easy to uncouple.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1, which is that the utility model is a kind of, excavates the structural representation for loading all-in-one；
Fig. 2 is a kind of schematic diagram for excavating the engine for loading all-in-one in upper frame of the utility model；
Fig. 3 is a kind of schematic diagram for excavating the slew gear for loading all-in-one of the utility model；
Fig. 4 is a kind of schematic diagram for excavating the lower vehicle frame for loading all-in-one of the utility model.
In figure：1. the air inlet of 25. sealing ring of upper frame 21. housing, 22. mandrel, 23. collector ring, 24. cavity 26.
27. the front vehicle wheel of 32. rear axle of oil inlet 28. air drain, 29. oil groove, 30. oil outlet, 3. times vehicle frames, 31. front axle 33.
34. the universal connecting shaft 39. the 3rd of 35. steering cylinder of rear wheel, 36. transfer case, 37. first universal connecting shaft 38. second
The bucket 44. of arm 43. excavates oil cylinder 1 and excavated in the rotation of the Support large arm 42. of 40. hydraulic motor of universal connecting shaft 41.
Oil cylinder 2 46. excavates the rotating bucket arm 53. of 51. loading arm of oil cylinder 3 47. chain frame, one 48. chain frame, 2 5. pivoting support 52.
Loader(-mounted) shovel 54. loads oil cylinder 1 and loads the seat of 71. operating platform of oil cylinder 2 6. pivoting support seat, 7. operating room 72.
8. the engine of torque-converters 9..
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Embodiment
With reference to figure 1, Fig. 2, Fig. 3 to Fig. 4, one kind, which is excavated, loads all-in-one, including upper frame 1, lower vehicle frame 3, the and of engine 9
Torque-converters 8, upper frame 1 be provided with operating room 7, excavator device, lower vehicle frame 3 be provided with loading machine device, front axle 31 and after
Vehicle bridge 32, front axle 31, rear axle 32 are separately mounted to the rear and front end of lower vehicle frame 3, front axle 31, the left and right of rear axle 32
Both ends are separately installed with front vehicle wheel 33, rear wheel 34, are provided between the front vehicle wheel at the both ends of front axle 31 for 33 turns of front vehicle wheel
To steering cylinder 35, be arranged on by using by wheel by vehicle bridge on lower vehicle frame, and front vehicle wheel driven by steering cylinder
Turn to so that the excavation loads the stability that all-in-one ensure that vehicle body center of gravity in the case of shoveling, and car during high speed walking
Body has a safety feature, and direction is steady, is not easy to uncouple, and further, is connected between upper frame 1 and lower vehicle frame 3 by slew gear
Connect, slew gear divides oil gas electricity body, pivoting support 5 and pivoting support seat 6 including center steering, and center steering divides oil gas electricity body
Housing is fixedly connected with upper frame 1, and center steering divides the mandrel of oil gas electricity body to be fixedly connected on lower vehicle frame 3, and pivoting support 5 is logical
Cross bolt to be locked in upper frame 1, pivoting support seat 6 is welded on lower vehicle frame 3, excavator device afterbody and the phase of pivoting support 5
To being fixedly connected, it can rotate relative to lower vehicle frame 3 together with operating room 7, be integrated in by using collector ring and mandrel and housing
Together, avoid because angle of revolution caused by collector ring limits, the excavation is loaded all-in-one and realize 360 ° of rotations,
Operating efficiency is substantially increased, further, loading machine device includes loading arm 51, rotating bucket arm 52 and loader(-mounted) shovel 53, the dress
The afterbody of load arm 51 is articulated with lower vehicle frame 3, and its head is flexibly connected with the afterbody of loader(-mounted) shovel 53, and loading arm 51 is by loading oil cylinder 1
The flexible election action for realizing itself, the cylinder body afterbody for loading oil cylinder 1 is movably connected on lower vehicle frame 3, loads oil cylinder 1
Expansion link head movement be connected to the middle part of loading arm 51, the middle part of rotating bucket arm 52 is articulated with the hinge of the middle part of loading arm 51 top
On carrier bar, the head of rotating bucket arm 52 is articulated with the flap on loader(-mounted) shovel top, and rotating bucket arm 52 is by loading the flexible of oil cylinder 2 55
The swing of itself is realized, and then drives the swing of loader(-mounted) shovel 53 and moves up and down, loads the cylinder body afterbody activity of oil cylinder 2 55 even
The afterbody of loading arm 51 is connected to, the expansion link head movement for loading oil cylinder 2 55 is connected to the afterbody of rotating bucket arm 52, by using liquid
Cylinder pressure drives multistage link arm structure so that the job area of loading machine device greatly increases, and further, excavator device includes
Arm 42 and bucket 43 in Support large arm 41, rotation, the afterbody of Support large arm 41 are articulated with pivoting support 5, in its head and rotation
The afterbody of arm 42 is flexibly connected, and bucket 43 is movably installed in rotation on the head of arm 42, and Support large arm 41 is by excavating oil cylinder
The one 44 flexible wobbling action for realizing itself, the cylinder body afterbody for excavating oil cylinder 1 are movably connected on pivoting support 5, are excavated
The expansion link head movement of oil cylinder 1 is connected on the flap of the middle part of Support large arm 41 lower section, and arm 42 passes through excavation in rotation
The flexible wobbling action for realizing itself of oil cylinder 2 45, the cylinder body afterbody for excavating oil cylinder 2 45 are movably connected on Support large arm 41
On, the expansion link head movement for excavating oil cylinder 2 45 is connected to the afterbody of arm 42 in rotation, and bucket 43 is by excavating oil cylinder 3 46
Flexible to realize the wobbling action of itself, the cylinder body afterbody for excavating oil cylinder 3 46 is movably connected in rotation on arm 42, by using
Driven by Hydraulic Cylinder multistage link arm structure so that the job area of excavator device greatly increases, further, arm 42 in rotation
It is movably hinged between one end and bucket 43 by chain frame, chain frame includes chain frame 1 and chain frame 2 48, chain frame 1 and chain frame two
48 one end is hinged, and the other end of chain frame 1 is flexibly connected with bucket 43, and the other end of chain frame 2 48 is articulated with arm in rotation
42 one end, the one end respectively with chain frame 1, chain frame 2 48 of the other end for excavating oil cylinder 3 46 are hinged, by the arm in rotation and
Increase chain frame between bucket to improve flexibility and stability of the bucket in bucket stretching process, further, get off
Transfer case 36, hydraulic motor 40 and universal connecting shaft are additionally provided with frame, transfer case 36 is arranged on the middle part of lower vehicle frame 3 and and hydraulic pressure
Motor 40 is connected by the first universal connecting shaft 37, corresponding respectively between transfer case 36 and forward and backward vehicle bridge to pass through the second universal company
The universal connecting shaft 39 of spindle 38 and the 3rd is connected, and by using four-wheel drive, has the characteristics of soil fertility, motive force is strong,
And without independent brake stop system, when being stopped on oblique wave, before the banked direction control valves that need to only act in hydraulic system can make
Trailing wheel is in blocking and can not fallen back, and operation flexible and convenient, safety, further, center steering divides oil gas electricity body by shell
Body 21, mandrel 22 and collector ring 23 are formed, and housing and the housing 21 of collector ring 23 are bolted to connection, collector ring 23
It is bolted to connection between mandrel and mandrel 22, the center of housing 21 is through hole, is matched with mandrel 22, the face of cylinder of through hole
It is upper it is axially disposed have some cavitys 24, cavity is equipped with sealing ring 25 between any two, on the face of cylinder of mandrel 22 with air inlet
Air drain 28 is offered on position corresponding to mouthfuls 26, with offering oil groove 29 on 27 corresponding position of oil inlet, under mandrel 22
The venthole 20 being connected respectively with air inlet, oil inlet, oil outlet 30 are offered on the portion face of cylinder, by by air cavity and oil pocket
Be arranged on same housing, reduce annexation, avoid dismounting and maintenace point, and ensure between each cavity mutually every
It is simple in construction while absolutely, reduce element size, further, front and rear symmetrically arranged two operation is provided with operating room 7
Platform 71 and the rotary seat 72 for being arranged on operating platform easy to operation in the middle part of operating room.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
1. one kind, which is excavated, loads all-in-one, including upper frame (1), lower vehicle frame (3), engine (9) and torque-converters (8), its feature
It is：The upper frame (1) is provided with operating room (7), excavator device, and the lower vehicle frame (3) is provided with loading machine device, preceding
Vehicle bridge (31) and rear axle (32), the front axle (31), rear axle (32) are separately mounted to the rear and front end of lower vehicle frame (3),
The front axle (31), the left and right ends of rear axle (32) are separately installed with front vehicle wheel (33), rear wheel (34), the front axle
(31) steering cylinder (35) turned to for front vehicle wheel (33) is installed, the upper frame (1) is with between the front vehicle wheel at both ends
Between vehicle frame (3) by provided with slew gear be connected, the slew gear including center steering divide oil gas electricity body, revolution branch
(5) and pivoting support seat (6) are held, the center steering divides the housing of oil gas electricity body to be fixedly connected with upper frame (1), the center
Revolution divides the mandrel of oil gas electricity body to be fixedly connected on lower vehicle frame (3), and the pivoting support (5) is locked in upper frame by bolt
(1) on, the pivoting support seat (6) is welded on lower vehicle frame (3), and the excavator device afterbody is relative with pivoting support (5)
It is fixedly connected, can be rotated together with operating room (7) relative to lower vehicle frame (3).
2. a kind of excavate according to claim 1 loads all-in-one, it is characterised in that：The loading machine device includes loading
Arm (51), rotating bucket arm (52) and loader(-mounted) shovel (53), loading arm (51) afterbody are articulated with lower vehicle frame (3), and its head is with loading
(53) afterbody that struggles against is flexibly connected, and the flexible election of realizing itself of the loading arm (51) by loading oil cylinder one (54) acts,
The cylinder body afterbody for loading oil cylinder one (54) is movably connected on lower vehicle frame (3), and the expansion link head movement for loading oil cylinder one (54) connects
The middle part of loading arm (51) is connected to, is articulated with the middle part of loading arm (51) on the flap of top, turns in the middle part of the rotating bucket arm (52)
Arm (52) head is articulated with the flap on loader(-mounted) shovel top, and rotating bucket arm (52) is by loading the flexible realization of oil cylinder two (55)
The swing of itself, and then drive the swing of loader(-mounted) shovel (53) and move up and down, the cylinder body afterbody for loading oil cylinder two (55) is lived
The dynamic afterbody for being connected to loading arm (51), the expansion link head movement for loading oil cylinder two (55) are connected to rotating bucket arm (52) afterbody.
3. a kind of excavate according to claim 1 loads all-in-one, it is characterised in that：The excavator device includes support
Arm (42) and bucket (43) in large arm (41), rotation, Support large arm (41) afterbody are articulated with pivoting support (5), its head
Portion is flexibly connected with the afterbody of arm (42) in rotation, and bucket (43) is movably installed in rotation on the head of arm (42), the branch
Support large arm (41) excavates the cylinder body afterbody of oil cylinder one (44) by excavating the flexible wobbling action for realizing itself of oil cylinder one (44)
It is movably connected on pivoting support (5), the expansion link head movement for excavating oil cylinder one (44) is connected in the middle part of Support large arm (41)
On the flap of lower section, arm (42) is dug by excavating the flexible wobbling action for realizing itself of oil cylinder two (45) in the rotation
The cylinder body afterbody of pick oil cylinder two (45) is movably connected in Support large arm (41), excavates the expansion link head movement of oil cylinder two (45)
Arm (42) afterbody in rotation is connected to, the flexible swing of realizing itself of the bucket (43) by excavating oil cylinder three (46) is moved
Make, the cylinder body afterbody for excavating oil cylinder three (46) is movably connected in rotation on arm (42).
4. a kind of excavate according to claim 3 loads all-in-one, it is characterised in that：One end of arm (42) in the rotation
It is movably hinged between bucket (43) by chain frame, the chain frame includes chain frame one (47) and chain frame two (48), chain frame one (47)
Be hinged with one end of chain frame two (48), the other end of chain frame one (47) is flexibly connected with bucket (43), chain frame two (48) it is another
End be articulated with rotation in arm (42) one end, it is described excavate oil cylinder three (46) the other end respectively with chain frame one (47), chain frame two
(48) one end is hinged.
5. a kind of excavate according to claim 1 loads all-in-one, it is characterised in that：Transfer is additionally provided with the lower vehicle frame
Case (36), hydraulic motor (40) and universal connecting shaft, the transfer case (36) be arranged on the middle part of lower vehicle frame (3) and with hydraulic pressure horse
Connected up to (40) by the first universal connecting shaft (37), it is corresponding respectively between the transfer case (36) and forward and backward vehicle bridge to pass through the
Two universal connecting shafts (38) and the drive connection of the 3rd universal connecting shaft (39).
6. a kind of excavate according to claim 1 loads all-in-one, it is characterised in that：The center steering divides oil gas electricity body
It is made up of housing (21), mandrel (22) and collector ring (23), housing and the housing (21) of the collector ring (23) pass through bolt
It is fixedly connected, is bolted to connection between the mandrel and mandrel (22) of collector ring (23), housing (21) center is logical
Hole, match with mandrel (22), axially disposed on the face of cylinder of through hole there are some cavitys (24), cavity is equipped between any two
Sealing ring (25), air drain (28) is offered on position corresponding with air inlet (26) on the face of cylinder of the mandrel (22),
Oil groove (29) is offered on position corresponding with oil inlet (27), offered on the lower cylindrical face of the mandrel (22) respectively with
Venthole (20) that air inlet, oil inlet are connected, oil outlet (30).
7. a kind of excavate according to claim 1 loads all-in-one, it is characterised in that：The engine (9) can be arranged on
In upper frame or lower vehicle frame.
8. a kind of excavate according to claim 1 loads all-in-one, it is characterised in that：It is provided with the operating room (7)
Front and rear symmetrically arranged two operating platform (71) and the rotary seat for being arranged on operating platform easy to operation in the middle part of operating room
(72)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720113274.0U CN206768892U (en) | 2017-02-07 | 2017-02-07 | One kind, which is excavated, loads all-in-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720113274.0U CN206768892U (en) | 2017-02-07 | 2017-02-07 | One kind, which is excavated, loads all-in-one |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206768892U true CN206768892U (en) | 2017-12-19 |
Family
ID=60647865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720113274.0U Expired - Fee Related CN206768892U (en) | 2017-02-07 | 2017-02-07 | One kind, which is excavated, loads all-in-one |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206768892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241874A (en) * | 2019-05-10 | 2019-09-17 | 江苏理工学院 | A kind of hydraulic crawler excavator that can be adjusted with wheelspan |
| CN111976448A (en) * | 2020-08-28 | 2020-11-24 | 北京泓慧国际能源技术发展有限公司 | Electric drive loader power system, power control method and electric drive loader |
-
2017
- 2017-02-07 CN CN201720113274.0U patent/CN206768892U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241874A (en) * | 2019-05-10 | 2019-09-17 | 江苏理工学院 | A kind of hydraulic crawler excavator that can be adjusted with wheelspan |
| CN111976448A (en) * | 2020-08-28 | 2020-11-24 | 北京泓慧国际能源技术发展有限公司 | Electric drive loader power system, power control method and electric drive loader |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 |