CN213839080U - Multi-path hydraulic system applied to bulldozer - Google Patents
Multi-path hydraulic system applied to bulldozer Download PDFInfo
- Publication number
- CN213839080U CN213839080U CN202022312154.8U CN202022312154U CN213839080U CN 213839080 U CN213839080 U CN 213839080U CN 202022312154 U CN202022312154 U CN 202022312154U CN 213839080 U CN213839080 U CN 213839080U
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic
- way valve
- electric control
- tank
- 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.)
- Active
Links
Images
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
The utility model provides a multipath hydraulic system applied to a bulldozer, which comprises a hydraulic oil tank, hydraulic oil cylinders connected with the hydraulic oil tank, control valves connected between the hydraulic oil cylinders, and a control assembly connected with the control valves; the control assembly comprises an electric control handle and a change-over switch, one end of the electric control handle is connected with a controlled end of the change-over switch, the control assembly comprises an electric control multi-way valve, a control end of the change-over switch is connected with a control end of the electric control multi-way valve, an oil inlet of the electric control multi-way valve is connected with a hydraulic oil tank, and an oil outlet of the electric control multi-way valve is connected with a hydraulic cylinder. Hydraulic system in promote the handle, the electro-magnet work of corresponding multiple unit valve, hydraulic system work like this, the multiple unit valve is from meso position switching-over to the position that needs, hydraulic cylinder work. The electric control multi-way valve has the advantages of labor saving for operators, compact structure and simple pipeline of a hydraulic system.
Description
Technical Field
The utility model belongs to the engineering machine tool field especially relates to an use multichannel hydraulic system on bull-dozer.
Background
At present, the multi-way valve for the bulldozer working device in the market is of a manual mechanical type and a hydraulic control pilot type, the reversing process of the manual mechanical control multi-way valve in working has larger operation force ratio, and the multi-way valve is arranged in a hydraulic oil tank and is complex to maintain. The hydraulic control pilot type multi-way valve is arranged outside the hydraulic oil tank, is simple to maintain and labor-saving in operation, but the hydraulic system pipeline is complex, and the whole hydraulic system of the hydraulic control pilot type control pipeline can only discharge air by depending on return oil of the hydraulic oil tank, so that the short-time work of the control pipeline is unstable.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an use multichannel hydraulic system on bull-dozer to solve manual mechanical control multiple unit valve and at the switching-over process control power of during operation great, the multiple unit valve is inside hydraulic tank, maintains complicated problem.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a multi-path hydraulic system applied to a bulldozer comprises a hydraulic oil tank, hydraulic oil cylinders connected with the hydraulic oil tank, control valves connected between the hydraulic oil cylinders, and a control assembly connected with the control valves;
the control assembly comprises an electric control handle and a change-over switch, one end of the electric control handle is connected with a controlled end of the change-over switch, the control assembly comprises an electric control multi-way valve, a control end of the change-over switch is connected with a control end of the electric control multi-way valve, an oil inlet of the electric control multi-way valve is connected with a hydraulic oil tank, and an oil outlet of the electric control multi-way valve is connected with a hydraulic cylinder.
Furthermore, the electric control multi-way valve further comprises a left electrifying ring and a right electrifying ring, and the left electrifying ring and the right electrifying ring are respectively connected with the control end of the change-over switch.
Furthermore, the oil inlet of the electric control multi-way valve is connected with the oil outlet of the hydraulic oil tank, the electric control multi-way valve further comprises a first exhaust port and a second exhaust port, the first exhaust port is connected to an oil path between the oil inlet of the electric control multi-way valve and the oil outlet of the hydraulic oil tank, the oil outlet of the electric control multi-way valve is connected with the oil inlet of the hydraulic oil cylinder, the oil return port of the electric control multi-way valve is connected with the oil outlet of the hydraulic oil cylinder, and the second exhaust port is connected with the oil return port of the hydraulic oil tank.
Furthermore, a first exhaust port of the electronic control multi-way valve is connected with a first one-way valve, an oil outlet of the first one-way valve is connected with the first exhaust port, and an oil inlet of the first one-way valve is connected to an oil path between an oil inlet of the electronic control multi-way valve and an oil outlet of the hydraulic oil tank.
Furthermore, a second check valve and an overflow valve are connected to a pipeline between the second exhaust port and an oil return port of the hydraulic oil tank, an oil inlet of the overflow valve is connected with an oil outlet of the hydraulic oil tank, an oil outlet of the overflow valve is connected with a pipeline between the second exhaust port and the oil return port of the hydraulic oil tank, an oil inlet of the second check valve is connected with a pipeline between the second exhaust port and the oil return port of the hydraulic oil tank, and an oil outlet of the second check valve is connected to a pipeline between the oil return port of the electronic control multi-way valve and an oil outlet of the hydraulic oil cylinder.
Furthermore, a hydraulic pump is connected to a pipeline between an oil inlet of the electric control multi-way valve and an oil outlet of the hydraulic oil tank, an oil inlet of the hydraulic pump is connected to an oil inlet of the hydraulic oil tank, and an oil outlet of the hydraulic pump is connected to an oil inlet of the electric control multi-way valve.
Furthermore, an oil return filter is connected to a pipeline between the second exhaust port of the electronic control multi-way valve and an oil return port of the hydraulic oil tank, an oil inlet of the oil return filter is connected to the second exhaust port of the electronic control multi-way valve, and an oil outlet of the oil return filter is connected to the oil return port of the hydraulic oil tank.
Compared with the prior art, a use multichannel hydraulic system on bull-dozer have following advantage:
hydraulic system in promote the handle, the electro-magnet work of corresponding multiple unit valve, hydraulic system work like this, the multiple unit valve is from the position of meso position switching-over to needs, hydraulic cylinder work. The electric control multi-way valve has the advantages of labor saving for operators, compact structure and simple pipeline of a hydraulic system.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a multi-path hydraulic system applied to a bulldozer according to an embodiment of the present invention.
Description of reference numerals:
1. an electric control handle; 2. a transfer switch; 3. an electrically controlled multi-way valve; 4. a hydraulic cylinder; 5. an overflow valve; 6. an oil return filter; 7. a hydraulic pump; 8. a first check valve; 9. a second one-way valve; 10. a hydraulic oil tank; 31. a left electrification ring; 32. an oil outlet of the electromagnetic multi-way valve; 33. an oil return port of the electromagnetic multi-way valve; 34. a first exhaust port; 35. an oil inlet of the electromagnetic multi-way valve; 36. a second exhaust port; 37. and a right electrification coil.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in FIG. 1, the multi-path hydraulic system applied to the bulldozer comprises a hydraulic oil tank 10, hydraulic oil cylinders 4 connected with the hydraulic oil tank 10, control valves connected between the hydraulic oil cylinders 4, and a control assembly connected with the control valves;
the control assembly comprises an electric control handle 1 and a change-over switch 2, one end of the electric control handle 1 is connected with a controlled end of the change-over switch 2, the control assembly comprises an electric control multi-way valve 3, a control end of the change-over switch 2 is connected with a control end of the electric control multi-way valve 3, an oil inlet 35 of the electric control multi-way valve is connected with the hydraulic oil tank 10, and an oil outlet 32 of the electric control multi-way valve is connected with the hydraulic cylinder.
The electric control multi-way valve 3 further comprises a left electrifying ring 31 and a right electrifying ring 37, and the left electrifying ring 31 and the right electrifying ring 37 are respectively connected with the control end of the change-over switch 2.
The oil inlet 35 of automatically controlled multiple unit valve is connected with the oil-out of hydraulic tank 10, automatically controlled multiple unit valve 3 still includes first gas vent 34, second gas vent 36, first gas vent 34 is connected on the oil circuit between the oil inlet 35 of automatically controlled multiple unit valve and the hydraulic tank 10 oil-out, hydraulic cylinder 4's oil inlet is connected to automatically controlled multiple unit valve's oil-out 32, hydraulic cylinder 4's oil-out is connected to automatically controlled multiple unit valve's oil return port 33, hydraulic tank 10's oil return port is connected to second gas vent 36.
The first exhaust port 34 of the electric control multi-way valve 3 is connected with a first one-way valve 8, the oil outlet of the first one-way valve 8 is connected with the first exhaust port 34, and the oil inlet of the first one-way valve 8 is connected to an oil path between the oil inlet 35 of the electric control multi-way valve and the oil outlet of the hydraulic oil tank 10.
The pipeline between the second exhaust port 36 and the oil return port of the hydraulic oil tank 10 is connected with a second one-way valve 9 and an overflow valve 5, the oil outlet of the hydraulic oil tank 10 is connected with the oil inlet of the overflow valve 5, the pipeline between the second exhaust port 36 and the oil return port of the hydraulic oil tank 10 is connected with the oil outlet of the overflow valve 5, the pipeline between the second exhaust port 36 and the oil return port of the hydraulic oil tank 10 is connected with the oil inlet of the second one-way valve 9, and the pipeline between the oil return port 33 of the electric control multi-way valve and the oil outlet of the hydraulic oil cylinder 4 is connected with the oil outlet of the second one-way valve 9.
The hydraulic control system is characterized in that a hydraulic pump 7 is connected to a pipeline between an oil inlet 35 of the electric control multi-way valve and an oil outlet of the hydraulic oil tank 10, an oil inlet of the hydraulic pump 7 is connected with an oil inlet of the hydraulic oil tank 10, and an oil outlet of the hydraulic pump 7 is connected with the oil inlet 35 of the electric control multi-way valve.
An oil return filter 6 is further connected to a pipeline between the second exhaust port 36 of the electronic control multi-way valve 3 and an oil return port of the hydraulic oil tank 10, an oil inlet of the oil return filter 6 is connected to the second exhaust port 36 of the electronic control multi-way valve 3, and an oil outlet of the oil return filter 6 is connected to the oil return port of the hydraulic oil tank 10.
The specific introduction is as follows:
the electric control multi-way valve is three-position and five-way, the change-over switch is used for controlling the circulation of a certain interface of the electric control multi-way valve and controlling the connection of a certain hydraulic oil cylinder, and the electric control handle is used for controlling the work of the hydraulic oil cylinder.
The multi-way valve of the working device adopts an electric control system, the operating force is small, a hydraulic pipeline is simple, a change-over switch is additionally arranged on a control panel, the change-over switch is provided with a zero gear, the working device of the bulldozer complete machine cannot move at zero position, and the safety function is achieved.
The multi-way valve of the working device of the bulldozer is internally provided with a hydraulic oil tank, the mechanical manual control is realized by changing the multi-way valve into an external electric control type, a control handle is an electric control handle, the reversing of the multi-way valve is electromagnetic control, the control port of the electromagnetic valve and the control port of the electric control handle are electrically connected to a control panel, the control panel is connected with a change-over switch, the change-over switch of the control panel controls the electromagnet of the multi-way valve and the electromagnet of the electric control handle, the change-over switch is set to a zero gear, when a hydraulic oil cylinder of the working device is required to work, the change-over switch is rotated to a corresponding gear to push the handle, the corresponding electromagnet of the multi-way valve works, thus, the hydraulic system works, the multi-way valve is reversed from a middle position to a required position, and the hydraulic oil cylinder works.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an use multichannel hydraulic system on bull-dozer which characterized in that: comprises a hydraulic oil tank (10), hydraulic oil cylinders (4) connected with the hydraulic oil tank (10), control valves connected between the hydraulic oil cylinders (4) and a control assembly connected with the control valves;
the control assembly comprises an electric control handle (1) and a change-over switch (2), one end of the electric control handle (1) is connected with a controlled end of the change-over switch (2), the control assembly comprises an electric control multi-way valve (3), a control end of the change-over switch (2) is connected with a control end of the electric control multi-way valve (3), an oil inlet (35) of the electric control multi-way valve is connected with a hydraulic oil tank (10), and an oil outlet (32) of the electric control multi-way valve is connected with a hydraulic cylinder.
2. The multiple hydraulic system for a bulldozer according to claim 1, in which: the electric control multi-way valve (3) further comprises a left electrifying ring (31) and a right electrifying ring (37), and the left electrifying ring (31) and the right electrifying ring (37) are respectively connected with the control end of the change-over switch (2).
3. The multiple hydraulic system for a bulldozer according to claim 1, in which: the oil inlet (35) of automatically controlled multiple unit valve (3) is connected with the oil-out of hydraulic tank (10), automatically controlled multiple unit valve (3) still includes first gas vent (34), second gas vent (36), first gas vent (34) are connected on the oil circuit between oil inlet (35) and hydraulic tank (10) oil-out of automatically controlled multiple unit valve, the oil inlet of hydraulic cylinder (4) is connected in oil-out (32) of automatically controlled multiple unit valve, the oil-out of hydraulic cylinder (4) is connected in oil return opening (33) of automatically controlled multiple unit valve, the oil return opening of hydraulic tank (10) is connected in second gas vent (36).
4. The multiple hydraulic system of claim 3, wherein: a first exhaust port (34) of the electric control multi-way valve (3) is connected with a first one-way valve (8), an oil outlet of the first one-way valve (8) is connected with the first exhaust port (34), and an oil inlet of the first one-way valve (8) is connected to an oil path between an oil inlet (35) of the electric control multi-way valve and an oil outlet of the hydraulic oil tank (10).
5. The multiple hydraulic system of claim 3, wherein: the hydraulic control system is characterized in that a second one-way valve (9) and an overflow valve (5) are connected to a pipeline between the second air vent (36) and an oil return port of the hydraulic oil tank (10), an oil inlet of the overflow valve (5) is connected with an oil outlet of the hydraulic oil tank (10), an oil outlet of the overflow valve (5) is connected with a pipeline between the second air vent (36) and the oil return port of the hydraulic oil tank (10), an oil inlet of the second one-way valve (9) is connected with a pipeline between the second air vent (36) and the oil return port of the hydraulic oil tank (10), and an oil outlet of the second one-way valve (9) is connected to a pipeline between an oil return port (33) of the electric control multi-way valve and an oil outlet of the hydraulic oil cylinder (4).
6. The multiple hydraulic system for a bulldozer according to claim 1, in which: the hydraulic control system is characterized in that a hydraulic pump (7) is connected to a pipeline between an oil inlet (35) of the electric control multi-way valve and an oil outlet of the hydraulic oil tank (10), an oil inlet of the hydraulic pump (7) is connected with an oil inlet of the hydraulic oil tank (10), and an oil outlet of the hydraulic pump (7) is connected with the oil inlet (35) of the electric control multi-way valve.
7. The multiple hydraulic system of claim 3, wherein: the oil return control device is characterized in that an oil return filter (6) is further connected to a pipeline between a second air outlet (36) of the electric control multi-way valve (3) and an oil return opening of the hydraulic oil tank (10), an oil inlet of the oil return filter (6) is connected with the second air outlet (36) of the electric control multi-way valve (3), and an oil outlet of the oil return filter (6) is connected with the oil return opening of the hydraulic oil tank (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022312154.8U CN213839080U (en) | 2020-10-16 | 2020-10-16 | Multi-path hydraulic system applied to bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022312154.8U CN213839080U (en) | 2020-10-16 | 2020-10-16 | Multi-path hydraulic system applied to bulldozer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213839080U true CN213839080U (en) | 2021-07-30 |
Family
ID=77009520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022312154.8U Active CN213839080U (en) | 2020-10-16 | 2020-10-16 | Multi-path hydraulic system applied to bulldozer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213839080U (en) |
-
2020
- 2020-10-16 CN CN202022312154.8U patent/CN213839080U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101532518B (en) | Concrete pump truck pumping double-main oil cylinder automatic high-low pressure switching and equidirectional telescoping hydraulic device | |
| CN201884255U (en) | High-displacement high-and-low-pressure automatic switching operator for concrete pumps | |
| CN105822618B (en) | A kind of descending valve plate of fork truck electro-hydraulic proportional multi-way valve | |
| CN200982329Y (en) | Two position two-way plug-in valve type high and low pressure switching valve | |
| CN213839080U (en) | Multi-path hydraulic system applied to bulldozer | |
| CN110925252A (en) | Integrated multi-way valve, lifting hydraulic control system and crane | |
| CN203548390U (en) | Hydraulic pumping system and concrete pumping equipment | |
| CN211470605U (en) | Integrated multi-way valve | |
| CN212389797U (en) | Valve element assembly and reversing valve with same | |
| CN106812752B (en) | Multiple directional control valve | |
| CN2523997Y (en) | Two digit and two way inserted valve style high pressure and low pressure switching valve | |
| CN202031822U (en) | Integral-type concrete pump high-low-pressure switching device | |
| CN104912857A (en) | Multi-way valve | |
| CN215257041U (en) | Electric proportional pump emergency control device and concrete pump truck | |
| CN205779975U (en) | A kind of descending valve plate of fork truck electro-hydraulic proportional multi-way valve | |
| CN210710614U (en) | Hydraulic control system for electric forklift gantry | |
| CN209856138U (en) | Hydraulic cylinder | |
| CN211082435U (en) | Electro-hydraulic control valve | |
| CN207972767U (en) | The integrated power unit of hydraulic sliding type watertight door | |
| CN207111553U (en) | A kind of Novel connecting shaft bracket hydraulic control system | |
| CN213145365U (en) | Communicating valve group and pumping equipment | |
| CN220769830U (en) | Integrated block for controlling single-cylinder oil cylinder by matching with bidirectional control system | |
| CN111042765A (en) | Underground flow control valve | |
| CN105626606A (en) | Hydraulic system of concrete pumping equipment and concrete pumping equipment | |
| CN212643209U (en) | Hydraulic control reversing valve for controlling internal oil supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |