CN209875589U - Hydraulic quick-change control loop of loader - Google Patents
Hydraulic quick-change control loop of loader Download PDFInfo
- Publication number
- CN209875589U CN209875589U CN201920511853.XU CN201920511853U CN209875589U CN 209875589 U CN209875589 U CN 209875589U CN 201920511853 U CN201920511853 U CN 201920511853U CN 209875589 U CN209875589 U CN 209875589U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- valve
- port
- quick
- accessory
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a loader hydraulic pressure quick change control circuit, the oil inlet and the oil return opening of the third trigeminy of trigeminy multiple unit valve link to each other with first interface AB1 of first two tee bend switching-over valve and the first interface AB2 of two tee bend switching-over valves of second respectively, the second interface A1 and the third interface B1 of first two tee bend switching-over valve link to each other with the first hydraulic fluid port B3 of accessory hydro-cylinder and the first hydraulic fluid port B4 of quick change hydro-cylinder respectively, the second interface A2 and the third interface B2 of two tee bend switching-over valves of second link to each other with the second hydraulic fluid port A3 of accessory hydro-cylinder and the second hydraulic fluid port A4 of quick change hydro-cylinder respectively. The utility model discloses a valve rod handle position of adjusting two three-way valves alright switch over accessory hydro-cylinder and quick change hydro-cylinder, solved third pipeline dismouting problem well.
Description
Technical Field
The utility model relates to a loader control circuit field, in particular to loader hydraulic pressure quick change control circuit.
Background
In order to enable the engineering machinery to have more use functions, the connecting rod of the engineering machinery needs to be replaced with accessories such as a cross accessory, a rotary drilling rig, a breaking hammer, an excavating bucket, a quick-change shovel with different bucket volumes and the like. In order to improve the working efficiency, increase the added value of products and meet different requirements of customers, various quick-change mechanisms can be adopted to quickly change various accessories. The existing quick-change mechanism adopts manual mechanical quick change and hydraulic quick change.
Most of loaders in the market are provided with a triple multi-way valve when accessories of hydraulic quick change are configured, wherein the first triple valve is used for controlling the lifting of a movable arm, the second triple valve is used for controlling the overturning of a bucket, the third triple valve is used for controlling the extension of a quick-change oil cylinder, and the hydraulic quick-change accessories configured in the actual use process also need to be controlled by the oil cylinder, so that the third triple pipeline is used for controlling the quick-change oil cylinder and the accessory oil cylinder respectively, the third triple pipeline needs to be frequently disassembled and assembled to control the quick-change oil cylinder and the accessory oil cylinder during use, the operation is complex, and inconvenience is brought to.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a loader hydraulic pressure quick change control circuit to the not enough among the prior art to solve above-mentioned problem.
The utility model provides a technical problem can adopt following technical scheme to realize:
a hydraulic quick-change control loop of a loader comprises a triple multi-way valve, and further comprises an accessory oil cylinder, a quick-change oil cylinder, a first two-position three-way reversing valve and a second two-position three-way reversing valve, wherein an oil inlet and an oil return port of a third triple of the triple multi-way valve are respectively connected with a first connector AB1 of the first two-position three-way reversing valve and a first connector AB2 of the second two-position three-way reversing valve, a second connector A1 and a third connector B1 of the first two-position three-way reversing valve are respectively connected with a first oil port B3 of the accessory oil cylinder and a first oil port B4 of the quick-change oil cylinder, and a second connector A2 and a third connector B2 of the second two-position three-way reversing valve are respectively connected with a second oil port A3 of the accessory oil cylinder and a second oil port A4 of the.
Furthermore, the first two-position three-way reversing valve and the second two-position three-way reversing valve are both manual reversing valves.
Furthermore, the accessory oil cylinder is a single-piston-rod hydraulic oil cylinder, the first two-position three-way valve is connected with a rod cavity of the accessory oil cylinder, and the second two-position three-way valve is connected with a rodless cavity of the accessory oil cylinder; the quick-change oil cylinder is a double-piston rod hydraulic oil cylinder.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses compact structure, convenient to use, through increase two tee bend manual reversing valves on the third pipeline at trigeminy multiple unit valve, through the valve rod handle position of adjusting two three-way valves alright switch over accessory hydro-cylinder and quick change hydro-cylinder, solved third pipeline dismouting problem well.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic quick-change control loop of a loader.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1, a loader hydraulic pressure quick change control circuit, including the trigeminy multiple unit valve, still include accessory hydro-cylinder 1, quick change hydro-cylinder 2, first two tee bend switching-over valve 3 and two tee bend switching-over valves 4 of second. An oil inlet and an oil return port of a third triplet of the triplet multi-way valve are respectively connected with a first interface AB1 of the first two-position three-way reversing valve 3 and a first interface AB2 of the second two-position three-way reversing valve 4. The second port A1 and the third port B1 of the first two-position three-way reversing valve 3 are respectively connected with the first oil port B3 of the accessory oil cylinder 1 and the first oil port B4 of the quick-change oil cylinder 2. The second port A2 and the third port B2 of the second two-position three-way reversing valve 4 are respectively connected with the second oil port A3 of the accessory oil cylinder 1 and the second oil port A4 of the quick-change oil cylinder 2.
The first two-position three-way reversing valve 3 and the second two-position three-way reversing valve 4 are both manual reversing valves.
The accessory oil cylinder 1 is a single-piston-rod hydraulic oil cylinder, the first two-position three-way valve is connected with a rod cavity of the accessory oil cylinder 1, and the second two-position three-way valve is connected with a rodless cavity of the accessory oil cylinder 1. The quick-change oil cylinder 2 is a double-piston rod hydraulic oil cylinder.
The first two-position three-way reversing valve 3 and the second two-position three-way reversing valve 4 are respectively connected with the accessory oil cylinder 1, the quick-change oil cylinder 2 and the triple multi-way valve through quick-change connectors.
The utility model discloses in the in-process of using, when the third pipeline of trigeminy multiple unit valve need control the quick change hydro-cylinder, control the valve rod handle of two three-way valves, control the case switching-over of two three-way valves, first interface AB1 of first two three-way valves is linked together rather than third interface B1 this moment, first interface AB2 of second two three-way valves is linked together rather than third interface B2, then the control cylinder makes hydraulic oil flow to the quick change hydro-cylinder in through the trigeminy multiple unit valve, realize that quick change hydro-cylinder piston rod is flexible; when the accessory oil cylinder needs to act, valve rod handles of the two-position three-way valves are operated to control the valve core to change direction, at the moment, a first connector AB1 of the first two-position three-way valve is communicated with a second connector A1 of the first two-position three-way valve, a first connector AB2 of the second two-position three-way valve is communicated with a second connector A2 of the second two-position three-way valve, hydraulic oil flows to the quick-change accessory oil cylinder, and the extension of a piston rod of the accessory oil cylinder.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a loader hydraulic pressure quick change control circuit, includes the triplex multiple unit valve, its characterized in that: the hydraulic quick-change valve further comprises an accessory oil cylinder, a quick-change oil cylinder, a first two-position three-way reversing valve and a second two-position three-way reversing valve, wherein an oil inlet and an oil return port of a third part of the triple multi-way valve are respectively connected with a first port AB1 of the first two-position three-way reversing valve and a first port AB2 of the second two-position three-way reversing valve, a second port A1 and a third port B1 of the first two-position three-way reversing valve are respectively connected with a first oil port B3 of the accessory oil cylinder and a first oil port B4 of the quick-change oil cylinder, and a second port A2 and a third port B2 of the second two-position three-way reversing valve are respectively connected with a second oil port A3 of the accessory oil cylinder and a second oil port A4 of.
2. The loader hydraulic quick-change control circuit of claim 1, wherein: and the first two-position three-way reversing valve and the second two-position three-way reversing valve are both manual reversing valves.
3. The loader hydraulic quick-change control circuit of claim 1, wherein: the accessory oil cylinder is a single-piston-rod hydraulic oil cylinder, the first two-position three-way valve is connected with a rod cavity of the accessory oil cylinder, and the second two-position three-way valve is connected with a rodless cavity of the accessory oil cylinder; the quick-change oil cylinder is a double-piston rod hydraulic oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920511853.XU CN209875589U (en) | 2019-04-15 | 2019-04-15 | Hydraulic quick-change control loop of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920511853.XU CN209875589U (en) | 2019-04-15 | 2019-04-15 | Hydraulic quick-change control loop of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209875589U true CN209875589U (en) | 2019-12-31 |
Family
ID=68960147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920511853.XU Expired - Fee Related CN209875589U (en) | 2019-04-15 | 2019-04-15 | Hydraulic quick-change control loop of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209875589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682380A (en) * | 2020-12-29 | 2021-04-20 | 徐工集团工程机械股份有限公司科技分公司 | Quick-change hydraulic system |
-
2019
- 2019-04-15 CN CN201920511853.XU patent/CN209875589U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682380A (en) * | 2020-12-29 | 2021-04-20 | 徐工集团工程机械股份有限公司科技分公司 | Quick-change hydraulic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105714873B (en) | excavator hydraulic control system and control method | |
| EP1580437B1 (en) | Hydraulic cylinder for use in a hydraulic tool | |
| WO2012094993A1 (en) | Method for improving excavating operation characteristic and grading work characteristic of excavator | |
| CN105909576B (en) | The coordinated control system and method and rotary drilling rig of pressurization oil cylinder and rear support leg oil cylinder | |
| CN102140808B (en) | Device for enhancing excavation-handling characteristics and levelling operation characteristics of excavator | |
| CN209875589U (en) | Hydraulic quick-change control loop of loader | |
| CN203188273U (en) | Excavator hydraulic control system and hydraulic excavator | |
| CN110144985B (en) | Excavator working device control system | |
| CN106223380B (en) | A kind of hydraulic hybrid excavator system | |
| CN112682380B (en) | Quick-change hydraulic system | |
| CN102535553B (en) | Variable bucket and control device thereof | |
| CN201962707U (en) | Device for improving digging characteristic and flattening characteristic of digger | |
| CN102628284B (en) | Oil circuit control device for excavators | |
| CN107288945B (en) | Differential loader rotating bucket coupling and auxiliary coupling composite control hydraulic system | |
| CN111535393A (en) | Excavator bucket control system and method and excavator | |
| CN108915007B (en) | Excavator swing arm bucket rod economizer system | |
| CN217557043U (en) | Bulldozing hydraulic system and engineering machinery | |
| CN213805601U (en) | Device for operating high-unloading bucket by electric button of pilot valve of loader | |
| CN214366949U (en) | Hydraulic system of excavator | |
| CN211778291U (en) | Multi-way valve of excavator | |
| CN2588103Y (en) | Energy-saving self-locking hydraulic controlled one direction multi-way change valve | |
| CN206034529U (en) | Excavator swing arm hydraulic control system | |
| CN208533588U (en) | The excavator and its dynamical system of distributed hydraulic-driven | |
| JPH0826554B2 (en) | Hydraulic circuit device of hydraulic excavator | |
| CN102536938B (en) | Liquid controlled multi-way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20191231 Termination date: 20210415 |