CN117769915A - External operating mechanism of multi-way valve of narrow-track tractor - Google Patents
External operating mechanism of multi-way valve of narrow-track tractor Download PDFInfo
- Publication number
- CN117769915A CN117769915A CN202410200260.7A CN202410200260A CN117769915A CN 117769915 A CN117769915 A CN 117769915A CN 202410200260 A CN202410200260 A CN 202410200260A CN 117769915 A CN117769915 A CN 117769915A
- Authority
- CN
- China
- Prior art keywords
- way valve
- cab
- narrow
- lifting
- module
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 239000003921 oil Substances 0.000 claims abstract description 41
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The invention relates to a multi-way valve operating mechanism, in particular to an external operating mechanism of a multi-way valve of a narrow-track tractor, which comprises the following components: the machine body comprises a cab, a cab bottom is arranged at the bottom of the cab, a multi-way valve assembly is arranged on the outer side of the back of the cab, the multi-way valve assembly is connected with an operating mechanism, and the operating mechanism penetrates through the cab and extends into the cab. According to the invention, the external control handle is arranged, and the uppermost external control handle can be driven to rotate around the multi-way valve control shaft by rotating the external control handle, so that the extension or recovery of the valve rod of the lifting module is controlled, the hydraulic oil way in the lifting module is further controlled, the hydraulic oil is distributed, and the extension or recovery of the piston rod of the lifting oil cylinder is controlled outside the cab. Visual operation can reduce the operation degree of difficulty, quickens the speed of replacement, and the replacement of farm tools can be accomplished by a single person. Meanwhile, the safety coefficient in operation is increased, and the probability of safety accidents can be reduced.
Description
Technical Field
The invention relates to a multi-way valve operating mechanism, in particular to an external operating mechanism of a multi-way valve of a narrow-track tractor.
Background
The tractor is an agricultural machine and a transport machine driven by an internal combustion engine, various accessories such as a tillage device, a transport hopper, a seeding device and the like can be installed at the rear of the tractor according to purposes, and the lifting power of the additional accessories at the rear is required to be driven by hydraulic power, and the hydraulic power is generally provided by the tractor. The hydraulic output provided by the tractor is typically distributed by a multiple way valve.
In the prior art, a multiway valve is generally arranged at the bottom of the back of a cab of a tractor, and then is connected with an operating handle through a transmission device such as a connecting rod, and the operating handle is generally arranged beside a cab. When the farm tool is hung or switched, at least two persons are required to operate in a matched mode due to the shielding of the cab on the sight. One person operates the control lever in the cab to control the multi-way valve so as to control the lifting oil cylinder to ascend or descend, and the other person observes the length of the oil cylinder and the position of the farm tool outside the cab to command the internal driver to adjust. In the process of replacing the farm tool, the operator cannot directly observe the positions of the farm tool and the oil cylinder, and needs to repeatedly adjust under the prompt of external personnel, so that the time consumption is long. And meanwhile, when the position and the state of an external person are adjusted, the driver cannot see the position and the state of the external person, misoperation is easy to occur, and the external person is injured. In addition, the control levers of the multi-way valve are generally on the same side, so that a driver needs to listen to external commands in a distracted manner during operation, and misoperation is easy to occur.
Disclosure of Invention
The invention mainly aims to provide an external control mechanism for a multi-way valve of a narrow-track tractor, which aims to solve the problems in the related art.
In order to achieve the above object, according to one aspect of the present invention, there is provided an external control mechanism for a multi-way valve of a narrow track tractor, comprising:
the machine body comprises a cab, a cab bottom plate is arranged at the bottom of the cab, a multi-way valve assembly is arranged on the outer side of the back of the cab, the multi-way valve assembly is connected with an operating mechanism, and the operating mechanism extends into the cab through the cab;
the multi-way valve assembly comprises a multi-way valve which is longitudinally arranged at the bottom of the back of the cab, and the multi-way valve comprises a lifting module which is connected with a hydraulic pipeline and used for distributing hydraulic oil to a lifting oil cylinder;
the operating mechanism comprises an external operating handle, and the external operating handle is connected with the lifting module through an operating crank arm and is used for controlling the on-off of an oil way of the lifting module.
Furthermore, the left side and the right side of the cabin bottom plate are provided with cabin side plates, and a chassis is arranged below the cabin bottom plate.
Further, the multi-way valve further comprises a switch module and a plurality of standby functional modules, wherein the switch module, the standby functional modules and the lifting modules are connected in parallel, the switch module is located at the lowest position, and the lifting module is located at the uppermost position.
Further, the switch module is connected with a liquid inlet pipe and a liquid return pipe.
Further, the lifting module is connected with a total lifting oil pipe and a total descending oil pipe.
Further, the switch module, the standby function module and the lifting module valve rod are connected with an excessive connecting rod through an operating crank arm, and the operating crank arm is rotatably arranged at the bottom of the back of the cab through a multi-way valve operating shaft.
Further, the excessive connecting rod extends into the cab through the cab, and a dustproof isolation sleeve is arranged on the excessive connecting rod and positioned in the cab.
Further, the lowermost transition connecting rod penetrates through the cab and is connected with a switch handle, and the switch handle is rotatably installed on the lower half part of the right cabin side plate.
Further, the upper excessive connecting rod penetrates through the cab and then is connected with an operating connecting rod through an excessive shaft, and the operating connecting rod is rotatably arranged at the top of the side plate of the right cabin.
Further, the control connecting rod is connected with a control handle, and the rightmost control handle and the external control handle jointly control the lifting module.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the switch handle and the control handle are arranged, the excessive connecting rod can be driven to move by controlling the rotation of the switch handle and the rotation of the control handle, so that the valve rod of the standby functional module and the valve rod of the lifting module are controlled to move by controlling the crank arm, and then the switches of the standby functional module and the lifting module are controlled;
2. according to the invention, the dustproof isolation sleeve is arranged, the dustproof isolation sleeve is used for wrapping the excessive connecting rod, and the dustproof isolation sleeve is fixedly connected with the cab, so that muddy water and dust can be prevented from entering the cab from a gap between the cab and the excessive connecting rod when the tractor runs, and the cab is ensured to be clean;
3. according to the invention, the external control handle is arranged, and the uppermost external control handle can be driven to rotate around the multi-way valve control shaft by rotating the external control handle, so that the extension or recovery of the valve rod of the lifting module is controlled, the hydraulic oil way in the lifting module is further controlled, the hydraulic oil is distributed, and the extension or recovery of the piston rod of the lifting oil cylinder is controlled outside the cab. Visual operation can reduce the operation degree of difficulty, quickens the speed of replacement, and the replacement of farm tools can be accomplished by a single person. Meanwhile, the safety coefficient in operation is increased, and the probability of safety accidents can be reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the fuselage structure of the present invention;
FIG. 3 is a schematic view of a multi-way valve assembly according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3C according to the present invention;
FIG. 5 is an enlarged schematic view of the structure A in FIG. 1 according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 2B according to the present invention;
FIG. 7 is a first schematic view of the steering mechanism of the present invention;
fig. 8 is a second schematic view of the steering mechanism structure of the present invention.
Illustration of:
1. a body; 11. a cab; 12. cabin floor; 13. cabin side panels; 14. a chassis;
2. a multiplex valve assembly; 21. a multiway valve; 211. a switch module; 212. a standby function module; 213. a lifting module; 22. a liquid inlet pipe; 23. a liquid return pipe; 24. lifting the oil pipe; 25. a total descending oil pipe; 26. a dispensing valve; 27. lifting a pipeline; 28. a descending pipeline; 29. lifting the oil cylinder;
3. an operating mechanism; 31. a multiway valve operating shaft; 32. manipulating the crank arm; 33. a transition link; 34. a dustproof isolation sleeve; 35. a transition axis; 36. a switch handle; 37. manipulating the connecting rod; 38. a manipulation handle; 39. an external control handle.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-8, the present embodiment provides an external control mechanism for a multi-way valve of a narrow track tractor, including:
the machine body 1, the machine body 1 comprises a cab 11, a cab bottom plate 12 is arranged at the bottom of the cab 11, a multi-way valve assembly 2 is arranged on the outer side of the back of the cab 11, the multi-way valve assembly 2 is connected with an operating mechanism 3, and the operating mechanism 3 penetrates through the cab 11 and extends into the cab 11. Cabin side plates 13 are arranged on the left side and the right side of the cabin bottom plate 12, and a chassis 14 is arranged below the cabin bottom plate 12.
Cabin floor 12 is fixedly mounted on top of chassis 14 by bolts, cabin side plates 13 are fixedly mounted on the sides of cabin floor 12 by bolts, and cab 11 is welded and mounted above cabin floor 12 and cabin side plates 13.
The multi-way valve assembly 2 comprises a multi-way valve 21, wherein the multi-way valve 21 is longitudinally arranged at the bottom of the back surface of the cab 11 by bolts, the multi-way valve 21 comprises a lifting module 213, and the lifting module 213 is connected with a hydraulic pipeline and used for distributing hydraulic oil to the lifting oil cylinder 29. The multi-way valve 21 further comprises a switch module 211 and two standby function modules 212, wherein the switch module 211, the standby function modules 212 and the lifting module 213 are connected in parallel, the switch module 211 is located at the lowest part, and the lifting module 213 is located at the uppermost part.
The multiplex valve 21 adopts a well-known multiplex valve, the stem of the multiplex valve 21 is parallel to the ground, and the stem of the multiplex valve 21 is directed uniformly to the right of the cab 11.
The switch module 211 is connected with a liquid inlet pipe 22 and a liquid return pipe 23 in a threaded manner.
The liquid inlet pipe 22 is used for injecting high-pressure hydraulic oil into the switch module 211, and the liquid return pipe 23 is used for discharging the hydraulic oil after working. The on-off of the oil passage of the switch module 211 can be controlled by controlling the valve stem movement of the switch module 211.
The lifting module 213 is screwed with a total lifting oil pipe 24 and a total lowering oil pipe 25.
The tail ends of the total lifting oil pipe 24 and the total descending oil pipe 25 are in threaded connection with a distributing valve 26, the left side and the right side of the distributing valve 26 are in threaded connection with a lifting pipeline 27 and a descending pipeline 28, the lifting pipeline 27 is in threaded connection with a rodless bin of the lifting oil cylinder 29, and the descending pipeline 28 is in threaded connection with a rod bin of the lifting oil cylinder 29.
By controlling the valve stem movement of the lifting module 213, hydraulic oil can be controlled to flow out of the total lifting oil pipe 24 and into the total lowering oil pipe 25, or out of the total lowering oil pipe 25 and into the total lifting oil pipe 24.
When hydraulic oil flows out of the total lifting oil pipe 24, the hydraulic oil can enter the lifting pipeline 27 through the distribution valve 26, then enters the rodless bin of the lifting oil cylinder 29, pushes the piston rod of the lifting oil cylinder 29 to lift, pushes the hydraulic oil in the rod bin of the lifting oil cylinder 29 out of the descending pipeline 28, returns to the total descending oil pipe 25 through the distribution valve 26, and is discharged from the liquid return pipe 23.
When hydraulic oil flows out from the total descending oil pipe 25, the hydraulic oil can enter the descending pipeline 28 through the distribution valve 26, then enters the rod bin of the lifting oil cylinder 29, pushes the piston rod of the lifting oil cylinder 29 to descend, simultaneously pushes hydraulic oil in the rodless bin of the lifting oil cylinder 29 out of the lifting pipeline 27, returns to the total ascending oil pipe 24 through the distribution valve 26, and is discharged from the liquid return pipe 23.
The operating mechanism 3 comprises an external operating handle 39, and the external operating handle 39 is connected with the lifting module 213 through an operating crank arm 32 and is used for controlling the on-off of an oil way of the lifting module 213.
The external control handle 39 is connected with the control crank arm 32 through a bolt, and the external control handle 39 can drive the control crank arm 32 to rotate around the multi-way valve control shaft 31, so that the valve rod of the lifting module 213 is driven to horizontally move, and the control of an oil way of the lifting module 213 is realized.
An external operating handle 39 is positioned
The switch module 211, the standby function module 212 and the valve rod of the lifting module 213 are connected with an excessive connecting rod 33 through a control crank arm 32, and the control crank arm 32 is rotatably installed at the bottom of the back of the cab 11 through a multi-way valve control shaft 31.
The valve rods of the switch module 211, the standby function module 212 and the lifting module 213 are rotatably connected with the control crank arm 32 through pins, and the control crank arm 32 is rotatably connected with the transition connecting rod 33 through a ball head.
When the excessive connecting rod 33 moves axially, the crank arm 32 can be operated to change the direction of the force, so that the valve rod of the switch module 211, the standby function module 212 and the lifting module 213 can be driven to move horizontally and axially.
The excessive connecting rod 33 extends into the cab 11 through the cab 11, and a dust-proof isolation sleeve 34 is arranged on the excessive connecting rod 33 and positioned in the cab 11.
The dustproof isolation sleeve 34 is made of rubber, the dustproof isolation sleeve 34 is bonded with the excessive connecting rod 33 through an adhesive, and the bottom surface of the dustproof isolation sleeve 34 is fixedly connected with the cab 11 through screws. The dust-proof spacer 34 can prevent external dust from entering the cab 11.
The lowest excessive connecting rod 33 is rotatably connected with a switch handle 36 through a ball head after penetrating the cab 11, and the switch handle 36 is rotatably arranged at the lower half part of the right cabin side plate 13.
The control switch handle 36 rotates back and forth, can drive the excessive connecting rod 33 of the lowest to move axially, and when the excessive connecting rod 33 of the lowest moves axially, can change the direction of force through operating the crank arm 32, thereby drive the horizontal axial movement of the valve rod of the switch module 211, and control the on-off of the oil circuit of the switch module 211.
The upper excessive link 33 is connected with an operating link 37 through an excessive shaft 35 after penetrating the cab 11, and the operating link 37 is rotatably installed on the top of the right side cabin side plate 13. The control link 37 is rotatably connected with a control handle 38 through a ball head, and the rightmost control handle 38 and the external control handle 39 jointly control the lifting module 213.
By disposing the manipulating handle 38 and the switch handle 36 separately, the switch handle 36 is lowered in its mounting position and brought closer to the right hand of the driver, and erroneous operation when the driver blindly operates can be avoided.
The rightmost steering handle 38 in combination with the outboard steering handle 39 controls the lift module 213 so that the operator can control the multiplex valve 21 both in and out of the cab.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (10)
1. An external operating mechanism of a multi-way valve of a narrow track tractor is characterized by comprising:
the intelligent control device comprises a machine body (1), wherein the machine body (1) comprises a cab (11), a cabin bottom plate (12) is arranged at the bottom of the cab (11), a multi-way valve assembly (2) is arranged on the outer side of the back of the cab (11), the multi-way valve assembly (2) is connected with an operating mechanism (3), and the operating mechanism (3) penetrates through the cab (11) and extends into the cab (11);
the multi-way valve assembly (2) comprises a multi-way valve (21), the multi-way valve (21) is longitudinally arranged at the bottom of the back of the cab (11), the multi-way valve (21) comprises a lifting module (213), and the lifting module (213) is connected with a hydraulic pipeline and is used for distributing hydraulic oil to a lifting oil cylinder (29);
the operating mechanism (3) comprises an external operating handle (39), and the external operating handle (39) is connected with the lifting module (213) through an operating crank arm (32) and is used for controlling the on-off of an oil way of the lifting module (213).
2. The external control mechanism for the multi-way valve of the narrow-track tractor according to claim 1, wherein cabin side plates (13) are arranged on the left side and the right side of the cabin bottom plate (12), and a chassis (14) is arranged below the cabin bottom plate (12).
3. The external control mechanism of the multi-way valve of the narrow track tractor according to claim 2, wherein the multi-way valve (21) further comprises a switch module (211) and a plurality of standby functional modules (212), the switch module (211), the standby functional modules (212) and a lifting module (213) are connected in parallel, the switch module (211) is located at the lowest position, and the lifting module (213) is located at the uppermost position.
4. The external control mechanism for the multi-way valve of the narrow-track tractor according to claim 3, wherein the switch module (211) is connected with a liquid inlet pipe (22) and a liquid return pipe (23).
5. The external control mechanism for the multi-way valve of the narrow track tractor according to claim 4, wherein the lifting module (213) is connected with a total lifting oil pipe (24) and a total descending oil pipe (25).
6. The external control mechanism for the multi-way valve of the narrow-track tractor according to claim 5, wherein the switch module (211), the standby function module (212) and the valve rod of the lifting module (213) are connected with an excessive connecting rod (33) through a control crank arm (32), and the control crank arm (32) is rotatably installed at the bottom of the back of the cab (11) through a multi-way valve control shaft (31).
7. The external control mechanism for the multi-way valve of the narrow-track tractor according to claim 6, wherein the excessive connecting rod (33) extends into the cab (11) through the cab (11), and a dustproof isolation sleeve (34) is arranged on the excessive connecting rod (33) and positioned in the cab (11).
8. The external control mechanism for the multi-way valve of the narrow-track tractor according to claim 7, wherein the lowermost transition connecting rod (33) penetrates through the cab (11) and is connected with a switch handle (36), and the switch handle (36) is rotatably arranged at the lower half part of the right cabin side plate (13).
9. The external control mechanism for the multi-way valve of the narrow-track tractor according to claim 8, wherein the upper excessive connecting rod (33) penetrates through the cab (11) and is connected with a control connecting rod (37) through an excessive shaft (35), and the control connecting rod (37) is rotatably arranged at the top of the right cabin side plate (13).
10. The external control mechanism of the multi-way valve of the narrow-track tractor according to claim 9, wherein the control connecting rod (37) is connected with a control handle (38), and the control handle (38) at the rightmost side and the external control handle (39) jointly control the lifting module (213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410200260.7A CN117769915B (en) | 2024-02-23 | 2024-02-23 | External operating mechanism of multi-way valve of narrow-track tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410200260.7A CN117769915B (en) | 2024-02-23 | 2024-02-23 | External operating mechanism of multi-way valve of narrow-track tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117769915A true CN117769915A (en) | 2024-03-29 |
| CN117769915B CN117769915B (en) | 2024-06-11 |
Family
ID=90389248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410200260.7A Active CN117769915B (en) | 2024-02-23 | 2024-02-23 | External operating mechanism of multi-way valve of narrow-track tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117769915B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560211U (en) * | 1992-01-28 | 1993-08-10 | 三菱農機株式会社 | Lift control device for agricultural tractors |
| JPH07155006A (en) * | 1993-12-03 | 1995-06-20 | Kubota Corp | Structure for fitting auxiliary control valve |
| US20120195727A1 (en) * | 2011-01-31 | 2012-08-02 | Yanmar Co., Ltd. | Work Vehicle |
| CN213361202U (en) * | 2020-08-29 | 2021-06-04 | 道依茨法尔机械有限公司 | Three-way multi-way valve operating device of wheeled tractor |
| CN113124013A (en) * | 2021-06-21 | 2021-07-16 | 山东悍沃农业装备有限公司 | Backpack multi-way valve control mechanism for tractor and multi-way valve assembly |
| CN114110150A (en) * | 2020-08-29 | 2022-03-01 | 道依茨法尔机械有限公司 | Wheeled tractor working device control |
-
2024
- 2024-02-23 CN CN202410200260.7A patent/CN117769915B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560211U (en) * | 1992-01-28 | 1993-08-10 | 三菱農機株式会社 | Lift control device for agricultural tractors |
| JPH07155006A (en) * | 1993-12-03 | 1995-06-20 | Kubota Corp | Structure for fitting auxiliary control valve |
| US20120195727A1 (en) * | 2011-01-31 | 2012-08-02 | Yanmar Co., Ltd. | Work Vehicle |
| CN213361202U (en) * | 2020-08-29 | 2021-06-04 | 道依茨法尔机械有限公司 | Three-way multi-way valve operating device of wheeled tractor |
| CN114110150A (en) * | 2020-08-29 | 2022-03-01 | 道依茨法尔机械有限公司 | Wheeled tractor working device control |
| CN113124013A (en) * | 2021-06-21 | 2021-07-16 | 山东悍沃农业装备有限公司 | Backpack multi-way valve control mechanism for tractor and multi-way valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117769915B (en) | 2024-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4976336A (en) | Lifting apparatus and lifting arm assembly for use therein | |
| EP0290584B1 (en) | Lifting devices for containers | |
| CN117769915B (en) | External operating mechanism of multi-way valve of narrow-track tractor | |
| CN105723843B (en) | A kind of multi-funcitonal wheel orchard operation vehicle | |
| CN113133335B (en) | Multi-module quick-exchange type farmland operation equipment | |
| CN215621401U (en) | Tractor | |
| US4240304A (en) | Valve operating system | |
| DE112016005297B4 (en) | Hydraulic drive device for a goods handling vehicle | |
| US6202790B1 (en) | Multiple speed lubrication system for a work vehicle | |
| CN112810801B (en) | Operating device, vertical take-off and landing aircraft and operating method | |
| CN111646368B (en) | Overturning flexible shaft operating device for crane | |
| CN209278363U (en) | Control device under a kind of clutch vehicle | |
| CN211172174U (en) | Electronic double-throttle system of skid steer loader | |
| CN209244976U (en) | Special purpose vehicle hydraulic system with emergency set | |
| CN202971366U (en) | Full-hydraulic drive system of seedling-planting machine | |
| CN213565573U (en) | Hydraulic drive mechanism and vehicle | |
| CN205036658U (en) | But elevating system of multi -purpose sprinkling irrigation tractor and hydraulic system thereof | |
| CN212831659U (en) | Fixed hydraulic loading and unloading machine for inland wharf ship | |
| CN107795534A (en) | A kind of hydraulic control system of longitudinal axial flow united reaper | |
| CN210502430U (en) | Hydraulic lifting system of pure electric off-highway rigid dump truck | |
| CN214197151U (en) | Hydraulic transmission assembly, crane power system and crane | |
| CN213920687U (en) | Electric tractor drive control system | |
| CN209479757U (en) | Self-propelled rural area machine steering control mechanism | |
| CN104786841A (en) | High throttle control system of lorry-mounted crane | |
| CN216766028U (en) | Can realize agricultural loader of forward and reverse driving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |