CN204023673U - The little pilot control block assembly that digs - Google Patents
The little pilot control block assembly that digs Download PDFInfo
- Publication number
- CN204023673U CN204023673U CN201420443961.5U CN201420443961U CN204023673U CN 204023673 U CN204023673 U CN 204023673U CN 201420443961 U CN201420443961 U CN 201420443961U CN 204023673 U CN204023673 U CN 204023673U
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- CN
- China
- Prior art keywords
- pump
- valve
- pilot control
- digs
- unloader
- 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
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Abstract
The utility model discloses a kind of little pilot control block assembly that digs, form and comprise the first pump (1), the second pump (2) and the 3rd pump (3), the first pump (1), the second pump (2) connect main valve (4), the 3rd pump (3) is connected with recuperation valve (5), precursor overflow valve (6), unloader (7) in turn, and unloader (7) is connected with the first pump (1), the second pump (2); Before the valve of recuperation valve (5), through reducing valve (9), connect pilot control electromagnetic valve (10) and walking double speed control electromagnetic valve (11).The utility model rationally utilizes flow, can reduce energy consumption.
Description
Technical field
The utility model relates to a kind of guide oil source valve group, particularly a kind of little pilot control block assembly that digs.
Background technology
Little digging (miniature digging machine) pilot control piece conventional scheme is to adopt three pump system, and first and second pump connects digging machine main valve, and for actions such as the walking of digging machine, revolution, swing arms, the 3rd pump is specifically designed to guide's fuel feeding, and connecting handle is controlled banked direction control valves.Problem due to micro-power digging and space, three pumps all select size identical conventionally, the gear pump of general 4-6CC left and right, be that the flow of system is in 10-12L/Min left and right, therefore conventional system can only have for the flow of digging machine action 20L/Min left and right, the flow of the 3rd pump is (general 2L/Min left and right) except moving for guide, and remaining flow is all by overflow valve overflow.So just caused the waste of flow, and overflow also has energy loss.
Utility model content
The purpose of this utility model is, a kind of little pilot control block assembly that digs is provided.The utility model rationally utilizes flow, can reduce energy consumption.
The technical solution of the utility model: the little pilot control block assembly that digs, it is characterized in that: comprise the first pump, the second pump and the 3rd pump, the first pump, the second pump connect main valve, and the 3rd pump is connected with recuperation valve, precursor overflow valve, unloader in turn, and unloader is connected with the first pump, the second pump; Before the valve of recuperation valve, through reducing valve, connect pilot control electromagnetic valve and walking double speed control electromagnetic valve.
Aforesaid little digging in pilot control block assembly, is equipped with one way valve between described unloader and the first pump, the second pump.
Compared with prior art, the utility model digs for the micro-of three pump system, and the 3rd pump is drawn unnecessary flow by sequence valve (recuperation valve, precursor overflow valve) outside moving for guide, with digging machine main valve interflow, promotes the speed of service and the efficiency of digging machine.The utility model passes through a compensating spool, a sequence valve that precursor overflow valve is synthetic by the hydraulic oil of the 3rd pump, boost in pressure before sequence valve is arrived to 35bar, before valve by offering pilot control electromagnetic valve fuel feeding after a reducing valve, the pressure that so just can guarantee guide's fuel feeding at least, more than 35bar, meets the requirement of guide's fuel feeding completely.The outlet of sequence valve is guided to unloader to the utility model and first and second pump collaborates, and like this, digging machine is done the flow moving and has just been promoted to 30L/Min left and right, compares conventional system, and speed and effect all promote 50%.The utility model is due to all work of participation of flow of the 3rd pump, so the energy loss of system also reduces greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Being labeled as in accompanying drawing: 1-the first pump, 2-the second pump, 3-the 3rd pump, 4-main valve, 5-recuperation valve, 6-precursor overflow valve, 7-unloader, 8-one way valve, 9-reducing valve, 10-pilot control electromagnetic valve, 11-walking double speed is controlled electromagnetic valve.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.The little pilot control block assembly that digs, form as shown in Figure 1, comprise that the first pump (1), the second pump 2 and the 3rd pump 3, the first pumps 1, the second pump 2 connect main valve 4, the 3rd pump 3 is connected with recuperation valve 5, precursor overflow valve 6, unloader 7 in turn, and unloader 7 is connected with the first pump 1, the second pump 2; Before the valve of recuperation valve 5, through reducing valve 9, connect pilot control electromagnetic valve 10 and walking double speed control electromagnetic valve 11.
Between described unloader 7 and the first pump 1, the second pump 2, be equipped with one way valve 8; Prevent reverse flow.
M1 shown in figure, M2, M3 are test port.
The utility model digs for the micro-of three pump system, and the 3rd pump is drawn unnecessary flow by sequence valve (recuperation valve, precursor overflow valve) outside moving for guide, with digging machine main valve interflow, promotes the speed of service and the efficiency of digging machine.The utility model passes through a compensating spool, a sequence valve that precursor overflow valve is synthetic by the hydraulic oil of the 3rd pump, boost in pressure before sequence valve is arrived to 35bar, before valve by offering pilot control electromagnetic valve fuel feeding after a reducing valve, the pressure that so just can guarantee guide's fuel feeding at least, more than 35bar, meets the requirement of guide's fuel feeding completely.The outlet of sequence valve is guided to unloader to the utility model and first and second pump collaborates, and like this, digging machine is done the flow moving and has just been promoted to about 30L/Min, compares conventional system and lead, and speed and effect all promote 50%.The utility model is due to all work of participation of flow of the 3rd pump, so the energy loss of system also reduces greatly.
Operating principle of the present utility model is as follows: micro-three oil pump feeds of digging through, P1, P2 pump connect main valve, connect P1, the P2 mouth of pilot control piece simultaneously, by one way valve and unloader 7 off-loads, the control signal of off-load is come to pilot control electromagnetic valve 10, in the time of need to having action, pilot control electromagnetic valve 10 is given electricity, unloader switches, and P1, the off-load of P2 pump are cut off, and pump pressure raises and can start working.P3 pump connects the P3 mouth of pilot control piece, by a built-up sequence valve with connect main valve and collaborate with P1, P2 pump.The pressure of sequence valve is 35bar, and a 35bar reducing valve in parallel before valve provides guide oil to control electromagnetic valve for pilot control electromagnetic valve and walking double speed.
Claims (2)
1. the little pilot control block assembly that digs, it is characterized in that: comprise the first pump (1), the second pump (2) and the 3rd pump (3), the first pump (1), the second pump (2) connect main valve (4), the 3rd pump (3) is connected with recuperation valve (5), precursor overflow valve (6), unloader (7) in turn, and unloader (7) is connected with the first pump (1), the second pump (2); Before the valve of recuperation valve (5), through reducing valve (9), connect pilot control electromagnetic valve (10) and walking double speed control electromagnetic valve (11).
2. the little pilot control block assembly that digs according to claim 1, is characterized in that: between described unloader (7) and the first pump (1), the second pump (2), be equipped with one way valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443961.5U CN204023673U (en) | 2014-08-07 | 2014-08-07 | The little pilot control block assembly that digs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443961.5U CN204023673U (en) | 2014-08-07 | 2014-08-07 | The little pilot control block assembly that digs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204023673U true CN204023673U (en) | 2014-12-17 |
Family
ID=52063559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420443961.5U Expired - Fee Related CN204023673U (en) | 2014-08-07 | 2014-08-07 | The little pilot control block assembly that digs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204023673U (en) |
-
2014
- 2014-08-07 CN CN201420443961.5U patent/CN204023673U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20210807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |