CN216241570U

CN216241570U - Special priority valve for special accessory

Info

Publication number: CN216241570U
Application number: CN202122930764.9U
Authority: CN
Inventors: 衣学航; 陈洪庆; 尼明军; 郭一隆; 邱冠玮
Original assignee: Shandong Mingyu Heavy Industry Machinery Co Ltd
Current assignee: Shandong Mingyu Heavy Industry Machinery Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-08
Anticipated expiration: 2031-11-26

Abstract

The utility model relates to the technical field OF priority valves, in particular to a special priority valve for accessories, which comprises a shell, wherein an OF oil outlet, a distributor port, an LS control oil port, a T oil return port, a gear pump P oil inlet, an accessory control oil inlet, an EF oil outlet and an electric control button are arranged on the shell, the electric control button is connected with an electromagnetic reversing valve, the electromagnetic reversing valve is connected with the gear pump P oil inlet, the EF oil outlet and the OF oil outlet, when the electromagnetic reversing valve is in a power-off state, the gear pump P oil inlet is stopped from an EF oil outlet oil path, the gear pump P oil inlet is communicated with an OF oil outlet oil path, when the electromagnetic reversing valve is powered on, the gear pump P oil inlet is communicated with the EF oil outlet oil path, the gear pump P oil inlet is stopped from the OF oil path, the accessory motor oil return port B is communicated with the accessory control oil inlet oil path, and the accessory control oil inlet is communicated with the OF oil path. The utility model has the advantages that the oil circuit has no energy consumption loss when the device normally works, and the maximum power is realized.

Description

Special priority valve for special accessory

Technical Field

The utility model relates to the technical field of priority valves, in particular to a special priority valve for a special accessory.

Background

In a traditional mode, the oil pressure supplied by the gear pump firstly passes through the priority valve, and then the oil is supplied to the accessory motor by the priority valve, so that the oil pressure is reduced by 1/3, the pressure of the accessory motor is insufficient, and the loader is insufficient in the oil pressure of the accessory, insufficient in power of the accessory and poor in effect in the daily operation process of using special accessories (such as a sweeper, a snowplow and the like).

The existing loader is mostly provided with a distributor for increasing an accessory control oil path, the accessory is controlled by the control distributor to work, two valve bodies are used for independently fixing, and the defects that pipeline connection is increased, the cost is high, the pipeline is complex, the failure rate is high, an operating rod is controlled, and the operation is inconvenient and difficult are high.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: the priority valve special for the special accessories is provided to overcome the defects of low accessory pressure, complex pipeline and inconvenient operation in the daily operation process of the special accessories (such as a sweeper, a snowplow and the like) in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a special priority valve for a special accessory comprises a priority valve shell, wherein an OF oil outlet, a distributor port, an LS control oil port, a T oil return port, a gear pump P oil inlet, an accessory control oil inlet, an EF oil outlet and an electric control button are arranged on the shell, the electric control button is connected with an electromagnetic reversing valve, the electromagnetic reversing valve is connected with the gear pump P oil inlet, the EF oil outlet and the OF oil outlet, when the electromagnetic reversing valve is in a power-off state, the gear pump P oil inlet is stopped with the EF oil outlet oil path, the gear pump P oil inlet is communicated with the OF oil outlet oil path, when the electromagnetic reversing valve is in a power-on state, the gear pump P oil inlet is communicated with the EF oil outlet oil path, the gear pump P oil inlet is stopped with the OF oil outlet oil path, and an accessory motor oil return port B is communicated with the accessory control oil inlet oil path, the accessory control oil inlet is communicated with the OF oil outlet oil way.

Preferably, the oil outlet EF is connected with an oil inlet OF an accessory motor, the oil outlet OF is connected with an oil inlet OF a steering gear box, the control oil port LS is connected with a control port OF the steering gear box, the T oil return port is connected with an oil return tank, and the distributor port is connected with a distributor.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the loader uses special accessories (such as a sweeper, a snowplow and the like) in the daily operation process, no energy consumption loss of an accessory oil path is ensured, and the maximum power of the accessory is realized;

2. the cost is saved, and power energy conservation 1/3 can be realized;

3. the electric control button controls the on-off of the electromagnetic directional valve, the whole pipeline is simple, the maintenance is convenient, the failure rate is low, the operation and the maintenance are convenient, and the production cost is reduced.

4. The maneuverability is strong, and the original mechanical gear lever operation is changed into electric control operation, so that the working efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic view of a special priority valve for accessories according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a special attachment specific priority valve of an embodiment of the present invention;

FIG. 3 is a front view of a priority valve specific to a particular accessory of an embodiment of the present invention;

FIG. 4 is a top view of a special attachment specific priority valve of an embodiment of the present invention;

FIG. 5 is a schematic view of the operation principle of the priority valve dedicated to the specific accessory according to the embodiment of the present invention;

in the figure, 1, a housing; 2. an OF oil outlet; 3. a dispenser port; 4. an LS control oil port; 5. t oil return port; 6. a P oil inlet of the gear pump; 7. an electronic control button; 8. the accessory controls the oil inlet; 9. an EF oil outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, an embodiment OF the present invention provides a technical solution for a priority valve dedicated for a special accessory, and fig. 1 is a schematic structural view OF the priority valve OF the embodiment, and includes a priority valve housing 1, where the housing 1 is provided with an OF oil outlet 2, a distributor port 3, an LS control oil port 4, a T oil return port 5, an EF oil outlet 9, a gear pump P oil inlet 6, and an electric control button 7, and the electric control button 7 is connected to an electromagnetic directional valve.

FIG. 5 is a schematic view OF the working principle OF a priority valve dedicated to a special accessory according to an embodiment OF the present invention, in which an electromagnetic directional valve is connected to a P oil inlet 6, an EF oil outlet 9, and an OF oil outlet 2 OF a gear pump, when the electromagnetic directional valve is in a power-off state, the P oil inlet 6 and the EF oil outlet 9 OF the gear pump are cut off, the P oil inlet 6 and the OF oil outlet 2 OF the gear pump are communicated, the gear pump directly supplies oil to a steering gear, and the accessory does not supply oil at this time; when the electromagnetic directional valve is in a power-on state, the oil inlet 6 OF the gear pump P is communicated with the oil path 9 OF the EF oil outlet, the oil inlet 6 OF the gear pump P is stopped with the oil path 2 OF the OF oil outlet, the oil return port B OF the accessory motor is communicated with the oil path 8 OF the accessory control oil inlet and is communicated with the oil path 2 OF the OF oil outlet, the gear pump directly supplies oil to the accessory motor, the oil is returned by the accessory motor and supplied to the accessory control oil inlet 8 and finally supplied to the oil outlet 2 OF the priority valve OF, the fact that the oil path OF the accessory has no energy consumption loss is guaranteed, and the maximum power OF the accessory is achieved.

In one embodiment, the EF oil outlet 9 is connected with an oil inlet OF an accessory motor, the OF oil outlet 2 is connected with an oil inlet OF a steering gear, the LS control oil port 4 is connected with a control port OF the steering gear, the T oil return port 5 is connected with an oil return box, and the distributor port 3 is connected with a distributor.

When the oil supply control valve is used, the work OF the electromagnetic reversing valve is controlled through the electric control button 7, when the electromagnetic reversing valve is in a power-off state, the oil inlet 6 OF the gear pump P is communicated with the oil way OF the OF oil outlet 2, the gear pump directly supplies oil to the priority valve, and at the moment, the accessory does not supply oil and does not work; when the electromagnetic reversing valve is in a power-on state, the oil inlet 6 OF the gear pump P is communicated with the oil way OF the EF oil outlet 9, the gear pump directly supplies oil to the accessory, the oil return port B OF the accessory motor is communicated with the oil way OF the OF oil outlet 2, the oil return port B OF the accessory motor is supplied to the accessory to control the oil inlet 8, and finally the oil is supplied to the OF oil outlet 2 OF the priority valve.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A priority valve for special accessories, comprising a priority valve housing (1), characterized in that: an OF oil outlet (2), a distributor port (3), an LS control oil port (4), a T oil return port (5), a gear pump P oil inlet (6), an attachment control oil inlet (8), an EF oil outlet (9) and an electric control button (7) are arranged on the shell (1), the electric control button (7) is connected with an electromagnetic reversing valve, the electromagnetic reversing valve is connected with the gear pump P oil inlet (6), the EF oil outlet (9) and the OF oil outlet (2), the gear pump P oil inlet (6) is stopped with the EF oil outlet (9) when the electromagnetic reversing valve is in a power-off state, the gear pump P oil inlet (6) is communicated with the OF oil outlet (2) oil way, the gear pump P oil inlet (6) is communicated with the EF oil way when the electromagnetic reversing valve is in a power-on state, the gear pump P oil inlet (6) is communicated with the EF oil way, and the gear pump P oil inlet (6) is stopped with the OF oil outlet (2) oil way, the accessory motor oil return port B is communicated with an oil path OF the accessory control oil inlet (8), and the accessory control oil inlet (8) is communicated with an oil path OF the OF oil outlet (2).

2. The accessory-specific priority valve of claim 1, wherein: the automatic steering gear is characterized in that the EF oil outlet (9) is connected with an oil inlet OF an accessory motor, the OF oil outlet (2) is connected with an oil inlet OF a steering gear, the LS control oil port (4) is connected with a control port OF the steering gear, the T oil return port (5) is connected with an oil return box, and the distributor port (3) is connected with a distributor.