CN205557639U - Skid -steer loader and work hydraulic system with safety protection function - Google Patents
Skid -steer loader and work hydraulic system with safety protection function Download PDFInfo
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- CN205557639U CN205557639U CN201620137896.2U CN201620137896U CN205557639U CN 205557639 U CN205557639 U CN 205557639U CN 201620137896 U CN201620137896 U CN 201620137896U CN 205557639 U CN205557639 U CN 205557639U
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Abstract
The utility model discloses a skid -steer loader and work hydraulic system with safety protection function, including hydraulic tank, working barrel, multiple unit valve, electric pilot operated directional control valve, boom cylinder and bucket -turning oil cylinder, working barrel oil absorption in hydraulic tank gets into the multiple unit valve, and the multiple unit valve includes swing arm valve unit and tipping bucket valve unit, and a swing arm valve unit hydraulic fluid port A1 communicates with boom cylinder's the pole chamber that has, and two B1 of swing arm valve unit hydraulic fluid port form the swing arm oil circuit through the no pole chamber intercommunication of electric pilot operated directional control valve with boom cylinder, a tipping bucket valve unit hydraulic fluid port A2 communicates through electric pilot operated directional control valve and bucket -turning oil cylinder's the pole chamber that has, and two B2 of tipping bucket valve unit hydraulic fluid port communicate with bucket -turning oil cylinder's no pole chamber, form the tipping bucket oil circuit, and the open -minded of swing arm oil circuit and tipping bucket oil circuit can be controlled in opening of electric pilot operated directional control valve. The utility model discloses a control handle function is restricted to opening of pilot operated directional control valve of electricity, has reduced the potential safety hazard that the driver brought because of the maloperation, ensures driver and car other people person's safety.
Description
Technical field
This utility model relates to a kind of sliding loader hydraulic system of working; it is specifically related to a kind of sliding loader hydraulic system of working with safety protection function; further relate to the sliding loader that a kind of employing has the hydraulic system of working of safety protection function, belong to sliding loader technical field.
Background technology
Sliding loader is a kind of small-size multifunction engineering machinery, there is good mobility, motility, quick-replaceable can be needed according to operation or mount multiple equipment, be widely used in that Active workings is narrow and small, the most gentle equipment of surface relief converts occasion frequently.
Sliding loader hydraulic system is the intermediate link connecting load with electromotor, is the power chain that engine output is ultimately transferred to operating mechanism.Sliding loader hydraulic system includes vibration hydraulic system, hydraulic system of working and quick change hydraulic circuit etc. at present.Wherein hydraulic system of working is used for driving the equipment such as swing arm and tipping bucket, generally use open type hydraulic system, it is specially working barrel inlet port and connects hydraulic oil container, oil-out connects banked direction control valves oil inlet P, the actuator port of banked direction control valves respectively with boom cylinder, dump ram hydraulic actuator connects, banked direction control valves oil return inlet T connects with hydraulic oil container, form swing arm oil circuit and tipping bucket oil circuit, control crank is directly connected with banked direction control valves by oil circuit, control crank includes swing arm handle and tipping bucket hands handle, swing arm handle controls swing arm oil circuit by operation banked direction control valves and realizes rising or falling of swing arm, tipping bucket handle controls tipping bucket oil circuit by banked direction control valves and realizes being closed flat or tumbling of tipping bucket, pressure can be converted to mechanical energy and realize the work of sliding loader equipment by hydraulic system.Its work process is that working barrel is from hydraulic oil container oil suction, hydraulic oil enters boom cylinder and dump ram through banked direction control valves, handle banked direction control valves control swing arm lifting through control crank, tipping bucket tumbles action, hydraulic oil returns to hydraulic oil container, in hydraulic oil container, precipitation enters back into cycle of operation after filtering, it is achieved shovel fills material, loading transport, loads lifting, tipping bucket discharging do action.
The operating process of sliding loader is that staff gets on the bus before driver's cabin at present, closes cab door, puts down safety bar, startup electromotor, finally promote control crank to be operated after entering driver's cabin.Owing to control crank is positioned at cab seat front left and right both sides, staff is in turnover driver's cabin and work process, it is easy to encounter control crank by mistake or unintentionally encounter control crank, causes maloperation to cause the swing arm in lifting to fall or tipping bucket is tumbled, cause the generation of peril.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, it is provided that a kind of sliding loader with safety protection function and hydraulic system of working thereof, solves the technical problem that in prior art, the safety of sliding loader hydraulic system of working is poor.
nullFor solving above-mentioned technical problem，This utility model provides a kind of sliding loader hydraulic system of working with safety protection function，Including banked direction control valves，Banked direction control valves includes boom valve unit and tipping bucket valve cell，Boom valve unit hydraulic fluid port one A1 connects with the rod chamber of boom cylinder，Boom valve unit hydraulic fluid port two B1 connects with the rodless cavity of boom cylinder，Form swing arm oil circuit，Tipping bucket valve cell hydraulic fluid port one A2 connects with the rod chamber of dump ram，Tipping bucket valve cell hydraulic fluid port two B2 connects with the rodless cavity of dump ram，Form tipping bucket oil circuit，It is characterized in that，Also include electric-hydraulic control reversing valve，Boom valve unit hydraulic fluid port two B1 connects with the rodless cavity of boom cylinder through electric-hydraulic control reversing valve，Tipping bucket valve cell hydraulic fluid port one A2 connects with the rod chamber of dump ram through electric-hydraulic control reversing valve，The unlatching of electric-hydraulic control reversing valve can control the open-minded of swing arm oil circuit and tipping bucket oil circuit.
Further, described electric-hydraulic control reversing valve includes two position, three-way electromagnetic change valve and two-position four-way pilot operated directional control valve, the oil-out of slippage pump connects with the oil-in of solenoid directional control valve, the oil-out of solenoid directional control valve connects with guide's hydraulic fluid port of pilot operated directional control valve, and the oil return opening of solenoid directional control valve connects with hydraulic oil container；The oil-in of pilot operated directional control valve connects with boom valve unit hydraulic fluid port two B1, and its oil return opening connects with tipping bucket valve cell hydraulic fluid port one A2, and pilot operated directional control valve hydraulic fluid port two B connects with the rodless cavity of boom cylinder, and pilot operated directional control valve hydraulic fluid port one A connects with the rod chamber of dump ram.Equipment in the vibration hydraulic system of sliding loader during wherein slippage pump is prior art, vibration hydraulic system is closed type hydraulic system, including two walking Variable plunger pumps and slippage pump.
Further, described solenoid directional control valve is additionally provided with press button, the energising opening control solenoid directional control valve of described press button.Press button can use button of the prior art, presses the button as "on" position, and sprung push buttons is off-position, and the connection of press button and solenoid directional control valve is with reference to prior art.
Further, described solenoid directional control valve is closed type.
Further, described banked direction control valves also includes auxiliary valve unit, passes through auxiliary valve unit cut-in operation hydraulic system for accessing the auxiliary hydraulic pressure joint of other hydraulic tests, and banked direction control valves is three clematis stem multiple directional control valves.
Further, also including oil absorption filter and return filter, oil absorption filter is located between hydraulic oil container and the inlet port of working barrel, is used for filtering working oil roughly；Return filter is located between banked direction control valves oil return inlet T and hydraulic oil container, is used for working oil is carried out fine filtering.
This utility model additionally provides a kind of sliding loader, and the hydraulic system of working of sliding loader uses the above-described sliding loader hydraulic system of working with safety protection function.
Further, the press button of electric-hydraulic control reversing valve is located in the driver's cabin of sliding loader, is positioned at control crank adjacent side.
Compared with prior art, this utility model is reached to provide the benefit that:
1) during sliding loader work, under engine start state, only press the press button of electric-hydraulic control reversing valve, promote control crank that equipment could be driven to be operated, avoid the potential safety hazard that driver brings because of maloperation, ensure driver and the personal safety of car other people person；
2) when the press button of electric-hydraulic control reversing valve is closed, boom cylinder and dump ram can be locked, and conveniently carry out the maintenance of sliding loader, improve hydraulic system of working safety；
3) it is additionally provided with filter, the hydraulic oil flowing back into hydraulic oil container is filtered roughly and fine filtering, improve the quality of the hydraulic oil of hydraulic system, improve the safety of hydraulic system.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic system of working in prior art；
Fig. 2 is the structural representation of hydraulic system of working in this utility model.
In figure: 1, hydraulic oil container；2, working barrel；3, banked direction control valves；4, electric-hydraulic control reversing valve；5, boom cylinder；6, dump ram；7, slippage pump；A1, boom valve unit hydraulic fluid port one；B1, boom valve unit hydraulic fluid port two；A2, tipping bucket valve cell hydraulic fluid port one；B2, tipping bucket valve cell hydraulic fluid port two；P, banked direction control valves oil-in；T, banked direction control valves oil return opening；A, pilot operated directional control valve hydraulic fluid port one；B, pilot operated directional control valve hydraulic fluid port two.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.Following example are only used for clearly illustrating the technical solution of the utility model, and can not limit protection domain of the present utility model with this.
nullIn prior art, the hydraulic system of working of sliding loader includes hydraulic oil container 1、Working barrel 2、Banked direction control valves 3、Boom cylinder 5 and dump ram 6，As shown in Figure 1，Banked direction control valves 3 includes boom valve unit and tipping bucket valve cell，The inlet port of working barrel 2 connects with hydraulic oil container 1，The oil-out of working barrel 2 connects with banked direction control valves oil inlet P，Boom valve unit hydraulic fluid port one A1 connects with the rod chamber of boom cylinder 5，Boom valve unit hydraulic fluid port two B1 connects with the rodless cavity of boom cylinder 5，Form swing arm oil circuit，Tipping bucket valve cell hydraulic fluid port one A2 connects with the rod chamber of dump ram 6，Tipping bucket valve cell hydraulic fluid port two B2 connects with the rodless cavity of dump ram 6，Form tipping bucket oil circuit，Banked direction control valves oil return inlet T connects with hydraulic oil container 1，Control crank is directly connected with banked direction control valves 3，Control crank includes the swing arm handle connected with boom valve unit and the tipping bucket handle connected with tipping bucket valve cell，Swing arm handle controls swing arm oil circuit by the boom valve unit of operation banked direction control valves 3 and realizes rising or falling of swing arm，Tipping bucket handle controls tipping bucket oil circuit by the tipping bucket valve cell of banked direction control valves 3 and realizes being closed flat or tumbling of tipping bucket.In hydraulic system of working work process, oil circuit process is as shown in the direction of arrow in Fig. 1, working barrel 2 is from hydraulic oil container 1 oil suction, hydraulic oil enters banked direction control valves oil inlet P, boom cylinder is entered through boom valve unit hydraulic fluid port A1, B1 of banked direction control valves 3, dump ram is entered through tipping bucket valve cell hydraulic fluid port A2, B2 of banked direction control valves 3, hydraulic oil is being back to hydraulic oil container 1 through banked direction control valves oil return inlet T, and in hydraulic oil container 1, precipitation enters back into cycle of operation after filtering.
A kind of sliding loader hydraulic system of working with safety protection function that this utility model provides, as shown in Figure 2, including hydraulic oil container 1, working barrel 2, banked direction control valves 3, electric-hydraulic control reversing valve 4, boom cylinder 5 and dump ram 6, the inlet port of working barrel 2 connects with hydraulic oil container 1, the oil-out of working barrel 2 connects with banked direction control valves oil inlet P, banked direction control valves 3 includes boom valve unit and tipping bucket valve cell, boom valve unit hydraulic fluid port one A1 connects with the rod chamber of boom cylinder 5, boom valve unit hydraulic fluid port two B1 connects through the rodless cavity of electric-hydraulic control reversing valve 4 with boom cylinder 5, form swing arm oil circuit；Tipping bucket valve cell hydraulic fluid port one A2 connects through the rod chamber of electric-hydraulic control reversing valve 4 with dump ram 6, tipping bucket valve cell hydraulic fluid port two B2 connects with the rodless cavity of dump ram 6, form tipping bucket oil circuit, the unlatching of electric-hydraulic control reversing valve 4 can control the open-minded of swing arm oil circuit and tipping bucket oil circuit, and banked direction control valves oil return inlet T connects with hydraulic oil container 1.
In embodiment of the present utility model, described electric-hydraulic control reversing valve 4 includes two position, three-way electromagnetic change valve and two-position four-way pilot operated directional control valve, the oil-out of slippage pump 7 connects with the oil-in of solenoid directional control valve, the oil-out of solenoid directional control valve connects with guide's hydraulic fluid port of pilot operated directional control valve, and the oil return opening of solenoid directional control valve connects with hydraulic oil container；The oil-in of pilot operated directional control valve connects with boom valve unit hydraulic fluid port two B1, and its oil return opening connects with tipping bucket valve cell hydraulic fluid port one A2, and pilot operated directional control valve hydraulic fluid port two B connects with the rodless cavity of boom cylinder 5, and pilot operated directional control valve hydraulic fluid port one A connects with the rod chamber of dump ram 6.Wherein slippage pump 7 is equipment in the vibration hydraulic system of sliding loader in prior art, and vibration hydraulic system is closed type hydraulic system, including two walking Variable plunger pumps and slippage pump 7.
Further, described solenoid directional control valve is additionally provided with press button, the energising opening control solenoid directional control valve of described press button.Press button can use button of the prior art, presses the button as "on" position, and sprung push buttons is off-position, and the connection of press button and solenoid directional control valve is with reference to prior art.
Further, described solenoid directional control valve is closed type.When solenoid directional control valve coil electricity, solenoid directional control valve is connected state.
Further, described banked direction control valves also includes auxiliary valve unit, passes through auxiliary valve unit cut-in operation hydraulic system for accessing the auxiliary hydraulic pressure joint of other hydraulic tests, and banked direction control valves is three clematis stem multiple directional control valves.
Electric-hydraulic control reversing valve specific works process is, two position, three-way electromagnetic change valve is as the pilot valve of two-position four-way pilot operated directional control valve, during the idle original state of sliding loader, press button is closed, solenoid directional control valve must not be in electricity condition, the oil-out of solenoid directional control valve separates with the hydraulic oil of slippage pump 7, pilot operated directional control valve is positioned at right position, its actuator port A and B separates with the hydraulic oil through banked direction control valves, make the rodless cavity of boom cylinder 5, between rod chamber and the banked direction control valves 3 of dump ram 6 obstructed, the hydraulic oil of boom cylinder 5 and dump ram 6 also cannot flow back to hydraulic oil container 1 by electric-hydraulic control reversing valve 4, i.e. swing arm oil circuit and tipping bucket oil circuit is obstructed, now control crank action will not drive boom cylinder 5 and dump ram 6 to carry out action, realize restraint function；When sliding loader is started working, release the button switch, solenoid directional control valve obtains electric, the oil-out that hydraulic oil flows out through solenoid directional control valve from slippage pump flows into pilot operated directional control valve, and then promote liquid controlled reversing valve core, pilot operated directional control valve is made to be positioned at left position, the rodless cavity of boom cylinder 5, between the rod chamber of dump ram 6 and banked direction control valves, it is in connected state, i.e. swing arm oil circuit and tipping bucket oil communication, now control crank action can drive boom cylinder and dump ram to carry out action, it is achieved lifting and being closed flat of tipping bucket of swing arm are tumbled.
In embodiment of the present utility model, also including oil absorption filter and return filter, oil absorption filter is located between the inlet port of hydraulic oil container 1 and working barrel 2, is used for filtering working oil roughly；Return filter is located between banked direction control valves oil return inlet T and hydraulic oil container 1, is used for working oil is carried out fine filtering.
This utility model additionally provides a kind of sliding loader, and the hydraulic system of working of sliding loader uses the above-described sliding loader hydraulic system of working with safety protection function.
Further, the press button of electric-hydraulic control reversing valve 4 is located in the driver's cabin of sliding loader, is positioned at control crank adjacent side.
Use the sliding loader hydraulic system of working with safety protection function of the present utility model, during sliding loader work, driver enters sliding loader driver's cabin, close cab door, put down safety bar, start electromotor, under engine start state, only press the press button of electric-hydraulic control reversing valve 4, promote control crank that equipment could be driven to be operated, reduce the potential safety hazard that driver brings because of maloperation, ensure driver and the personal safety of car other people person, and when the press button of electric-hydraulic control reversing valve 4 is closed, boom cylinder and dump ram can be locked, conveniently carry out the maintenance of sliding loader, improve hydraulic system of working safety.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; on the premise of without departing from this utility model know-why; can also make some improvement and deformation, these improve and deformation also should be regarded as protection domain of the present utility model.
Claims (7)
- null1. a sliding loader hydraulic system of working with safety protection function，Including banked direction control valves，Banked direction control valves includes boom valve unit and tipping bucket valve cell，Boom valve unit hydraulic fluid port one (A1) connects with the rod chamber of boom cylinder，Boom valve unit hydraulic fluid port two (B1) connects with the rodless cavity of boom cylinder，Form swing arm oil circuit，Tipping bucket valve cell hydraulic fluid port one (A2) connects with the rod chamber of dump ram，Tipping bucket valve cell hydraulic fluid port two (B2) connects with the rodless cavity of dump ram，Form tipping bucket oil circuit，It is characterized in that，Also include electric-hydraulic control reversing valve，Boom valve unit hydraulic fluid port two (B1) connects with the rodless cavity of boom cylinder through electric-hydraulic control reversing valve，Tipping bucket valve cell hydraulic fluid port one (A2) connects with the rod chamber of dump ram through electric-hydraulic control reversing valve，The unlatching of electric-hydraulic control reversing valve can control the open-minded of swing arm oil circuit and tipping bucket oil circuit.
- A kind of sliding loader hydraulic system of working with safety protection function the most according to claim 1; it is characterized in that; described electric-hydraulic control reversing valve includes two position, three-way electromagnetic change valve and two-position four-way pilot operated directional control valve; the oil-out of slippage pump connects with the oil-in of solenoid directional control valve; the oil-out of solenoid directional control valve connects with guide's hydraulic fluid port of pilot operated directional control valve, and the oil return opening of solenoid directional control valve connects with hydraulic oil container；The oil-in of pilot operated directional control valve connects with boom valve unit hydraulic fluid port two (B1), its oil return opening connects with tipping bucket valve cell hydraulic fluid port one (A2), pilot operated directional control valve hydraulic fluid port two (B) connects with the rodless cavity of boom cylinder, and pilot operated directional control valve hydraulic fluid port one (A) connects with the rod chamber of dump ram.
- A kind of sliding loader hydraulic system of working with safety protection function the most according to claim 2, is characterized in that, described solenoid directional control valve is additionally provided with press button, the energising opening control solenoid directional control valve of described press button.
- A kind of sliding loader hydraulic system of working with safety protection function the most according to claim 3, is characterized in that, described solenoid directional control valve is closed type.
- A kind of sliding loader hydraulic system of working with safety protection function the most according to claim 1; it is characterized in that; also include oil absorption filter and return filter; oil absorption filter is located between the inlet port of hydraulic oil container (1) and working barrel (2), is used for filtering working oil roughly；Return filter is located between banked direction control valves oil return opening (T) and hydraulic oil container (1), is used for working oil is carried out fine filtering.
- 6. having a sliding loader for safety protection function, it is characterized in that, the hydraulic system of sliding loader uses the sliding loader hydraulic system of working with safety protection function described in any one of claim 1-5.
- A kind of sliding loader with safety protection function the most according to claim 6, is characterized in that, the press button of electric-hydraulic control reversing valve is located in the driver's cabin of sliding loader, is positioned at control crank adjacent side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137896.2U CN205557639U (en) | 2016-02-24 | 2016-02-24 | Skid -steer loader and work hydraulic system with safety protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137896.2U CN205557639U (en) | 2016-02-24 | 2016-02-24 | Skid -steer loader and work hydraulic system with safety protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205557639U true CN205557639U (en) | 2016-09-07 |
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ID=56818237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620137896.2U Withdrawn - After Issue CN205557639U (en) | 2016-02-24 | 2016-02-24 | Skid -steer loader and work hydraulic system with safety protection function |
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| Country | Link |
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| CN (1) | CN205557639U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544645A (en) * | 2016-02-24 | 2016-05-04 | 徐州徐工特种工程机械有限公司 | Skid steer loader with safety protection function, and working hydraulic system of skid steer loader |
| US11204044B2 (en) | 2020-01-08 | 2021-12-21 | Cnh Industrial America Llc | Hydraulic actuator control system |
-
2016
- 2016-02-24 CN CN201620137896.2U patent/CN205557639U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544645A (en) * | 2016-02-24 | 2016-05-04 | 徐州徐工特种工程机械有限公司 | Skid steer loader with safety protection function, and working hydraulic system of skid steer loader |
| US11204044B2 (en) | 2020-01-08 | 2021-12-21 | Cnh Industrial America Llc | Hydraulic actuator control system |
| US11719262B2 (en) | 2020-01-08 | 2023-08-08 | Cnh Industrial America Llc | Hydraulic actuator control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160907 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |