CN205524211U - Hydraulic pump and harvester with emergency braking function - Google Patents
Hydraulic pump and harvester with emergency braking function Download PDFInfo
- Publication number
- CN205524211U CN205524211U CN201620113782.4U CN201620113782U CN205524211U CN 205524211 U CN205524211 U CN 205524211U CN 201620113782 U CN201620113782 U CN 201620113782U CN 205524211 U CN205524211 U CN 205524211U
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- valve
- reversal valve
- emergency braking
- hydraulic pump
- braking function
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Abstract
The utility model discloses a have the hydraulic pump of emergency braking function, belong to agricultural machine technical field, including controlling means, sloping cam plate and benefit hydraulic fluid port, controlling means includes control piston, first switching -over valve, guide's variable jar, second switching -over valve and solenoid valve, it divides two the tunnel to connect respectively to mend the hydraulic fluid port solenoid valve and first switching -over valve, the other end of solenoid valve is connected second switching -over valve, two actuator port of second switching -over valve connect respectively the first chamber and the second chamber of guide's variable jar, guide's variable jar is connected first switching -over valve, two actuator port of first switching -over valve connect respectively control piston's first end and second end, control piston connects the sloping cam plate. The utility model also discloses a harvester that is including the above -mentioned hydraulic pump that has the emergency braking function. The utility model discloses a potential safety hazard has been avoided to the emergency braking function of harvester, has improved the security of driving.
Description
Technical field
This utility model belongs to agricultural machinery technological field, is specifically related to a kind of hydraulic pump with emergency braking function, further relates to a kind of harvester including the above-mentioned hydraulic pump with emergency braking function.
Background technology
Harvester for hydrostatic drive, the domestic manual variable pump of general employing, walking and braking are mainly controlled by operation handle, when normal vehicle operation, driver is in case of emergency, needs stop in emergency, for the driving habits of domestic user, major part is to be braked by brake pedal rather than handle retracts middle position, in this case, if driver simply steps on brake pedal, due to hydraulic system still in work, so vehicle can not stop, there is potential safety hazard, be even prone to accidents.
Meanwhile, the electromagnetic valve on hydraulic pump needs energising, and hydraulic pump just can work, and when brake hard, by electromagnetic valve power-off, vehicle stops travelling, and this mode can be safer.If hydraulic pump works in the case of electromagnetic valve power-off, when car load circuit breaks down, then giving solenoid valves, hydraulic pump does not returns to middle position, and vehicle will not stop in this case, and is to continue with travelling, and causes the generation of accident, therefore has potential safety hazard.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of hydraulic pump with emergency braking function, it is possible to realize emergency braking function, it is to avoid potential safety hazard, improves the safety driven.
Conceiving as same technology, to be solved in the utility model another technical problem is that: provides a kind of harvester.
For solving above-mentioned first technical problem, the technical solution of the utility model is: with the hydraulic pump of emergency braking function, including controlling device, swash plate and repairing mouth, described control device includes controlling piston, first reversal valve, guide's variable cylinder and the second reversal valve, described control device also includes electromagnetic valve, described repairing mouth divides two-way to connect described electromagnetic valve and the first reversal valve respectively, the other end of described electromagnetic valve connects described second reversal valve, two actuator ports of described second reversal valve connect the first chamber and second chamber of described guide's variable cylinder respectively, described guide's variable cylinder connects described first reversal valve, two actuator ports of described first reversal valve connect the first end and second end of described control piston respectively, described control piston connects described swash plate.
Improve as one, between described electromagnetic valve and described second reversal valve, be additionally provided with air relief valve.
As further improving, described electromagnetic valve is two-position three way magnetic valve.
As further improving, described first reversal valve is 3 position-5 way valve.
Improving as one, described second reversal valve is three position four-way directional control valve.
For solving above-mentioned second technical problem, the technical solution of the utility model is: harvester, and including the above-mentioned hydraulic pump with emergency braking function, described second reversal valve is controlled by the control crank of described harvester.
After have employed technique scheme, the beneficial effects of the utility model are: owing to including controlling device with the hydraulic pump of emergency braking function, swash plate and repairing mouth, described control device includes controlling piston, first reversal valve, guide's variable cylinder, second reversal valve and electromagnetic valve, thus when should be applied in harvester with the hydraulic pump of emergency braking function, second reversal valve is controlled by the control crank of described harvester, when electromagnetic valve obtains electric, control oil from repairing mouth through electromagnetic valve, second reversal valve enters guide's variable cylinder, owing to guide's variable cylinder and the first reversal valve connect, so that the first reversal valve is positioned at on-state, and then the inclination angle of swash plate is changed by controlling piston, make hydraulic pump in running order；When, after the brake pedal stepping on harvester, being obtained by pressure switch electric, making electromagnetic valve dead electricity, control oil off-load, swash plate fly back, hydraulic pressure pump delivery is zero, and vehicle stops, thus realizes the function of brake hard；If the circuit malfunctions of car load, electromagnetic valve no power, hydraulic pump will not work, and vehicle can not travel, driver can find the fault of car load in time, it is to avoid potential safety hazard.
Owing to described second reversal valve is controlled by the control crank of described harvester, controlled the spool position of the second reversal valve by control crank, thus realize the commutation of the second reversal valve.
The hydraulic pump with emergency braking function that this utility model provides and harvester, it is achieved that the emergency braking function of harvester, it is to avoid potential safety hazard, improve the safety of driving.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of the hydraulic pump with emergency braking function that this utility model provides；
In figure: 1, control device, 11, control piston, the 12, first reversal valve, A, actuator port, B, actuator port, 13, guide's variable cylinder, the 14, second reversal valve, Y, actuator port, Z, actuator port, 15, electromagnetic valve, 2, repairing mouth, 3, air relief valve, 4, control crank.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
As shown in Figure 1, a kind of hydraulic pump with emergency braking function, including controlling device 1, swash plate (not shown) and repairing mouth 2, control device 1 to include controlling piston the 11, first reversal valve 12, guide's variable cylinder 13 and the second reversal valve 14, wherein, swash plate, control piston 11 and guide's variable cylinder 13 are known in the art technology, do not repeat them here；Control device 1 and also include electromagnetic valve 15,2 points of two-way of repairing mouth connect electromagnetic valve 15 and the first reversal valve 12 respectively, the other end of electromagnetic valve 15 connects the second reversal valve 14, the actuator port Y and actuator port Z of the second reversal valve 14 connects the first chamber and second chamber of guide's variable cylinder 13 respectively, guide's variable cylinder 13 connects the first reversal valve 12, the actuator port A and actuator port B of the first reversal valve 12 connects the first end and the second end controlling piston 11 respectively, controls piston 11 and connects swash plate.
It is additionally provided with air relief valve 3 between above-mentioned electromagnetic valve 15 and the second reversal valve 14.
Above-mentioned electromagnetic valve 15 is two-position three way magnetic valve.
Above-mentioned first reversal valve 12 is 3 position-5 way valve.
Above-mentioned second reversal valve 14 is three position four-way directional control valve.
Its operation principle is as follows:
When should be applied in harvester with the hydraulic pump of emergency braking function, second reversal valve 14 is controlled by the control crank 4 of harvester, when electromagnetic valve 15 obtains electric, control oil and enter guide's variable cylinder 13 from repairing mouth 2 through electromagnetic valve the 15, second reversal valve 14, owing to guide's variable cylinder 13 and the first reversal valve 12 connect, so that the first reversal valve 12 is positioned at on-state, and then change the inclination angle of swash plate by controlling piston 11, make hydraulic pump in running order；When, after the brake pedal stepping on harvester, being obtained by pressure switch electric, making electromagnetic valve 15 dead electricity, control oil off-load, swash plate fly back, hydraulic pressure pump delivery is zero, and vehicle stops, thus realizes the function of brake hard；If the circuit malfunctions of car load, electromagnetic valve 15 no power, hydraulic pump will not work, and vehicle can not travel, driver can find the fault of car load in time, it is to avoid potential safety hazard.
The hydraulic pump with emergency braking function that this utility model provides, it is achieved that the emergency braking function of harvester, it is to avoid potential safety hazard, improves the safety of driving.
The invention also discloses a kind of harvester, including the above-mentioned hydraulic pump with emergency braking function, above-mentioned second reversal valve 14 is controlled by the control crank 4 of harvester.Controlled the spool position of the second reversal valve 14 by control crank 4, thus realize the commutation of the second reversal valve 14.
The harvester that this utility model provides, it is achieved that the emergency braking function of harvester, it is to avoid potential safety hazard, improves the safety of driving.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (6)
1. with the hydraulic pump of emergency braking function, including controlling device (1), swash plate and repairing mouth (2),
Described control device (1) includes controlling piston (11), the first reversal valve (12), guide's variable cylinder (13)
With the second reversal valve (14), it is characterised in that described control device (1) also includes electromagnetic valve (15), institute
State repairing mouth (2) point two-way and connect described electromagnetic valve (15) and the first reversal valve (12), described electricity respectively
The other end of magnet valve (15) connects described second reversal valve (14), two of described second reversal valve (14)
Actuator port (Y, Z) connects the first chamber and the second chamber, the described elder generation of described guide's variable cylinder (13) respectively
Lead variable cylinder (13) and connect described first reversal valve (12), two work of described first reversal valve (12)
Hydraulic fluid port (A, B) connects the first end and second end of described control piston (11), described control piston respectively
(11) described swash plate is connected.
Hydraulic pump with emergency braking function the most according to claim 1, it is characterised in that described
Air relief valve (3) it is additionally provided with between electromagnetic valve (15) and described second reversal valve (12).
Hydraulic pump with emergency braking function the most according to claim 2, it is characterised in that described
Electromagnetic valve (15) is two-position three way magnetic valve.
Hydraulic pump with emergency braking function the most according to claim 3, it is characterised in that described
First reversal valve (12) is 3 position-5 way valve.
Hydraulic pump with emergency braking function the most according to claim 4, it is characterised in that described
Second reversal valve (14) is three position four-way directional control valve.
6. harvester, it is characterised in that include as described in any one claim in claim 1 to 5
The hydraulic pump with emergency braking function, described second reversal valve (14) is by the manipulation hands of described harvester
Handle (4) controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113782.4U CN205524211U (en) | 2016-02-04 | 2016-02-04 | Hydraulic pump and harvester with emergency braking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113782.4U CN205524211U (en) | 2016-02-04 | 2016-02-04 | Hydraulic pump and harvester with emergency braking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205524211U true CN205524211U (en) | 2016-08-31 |
Family
ID=56776017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620113782.4U Active CN205524211U (en) | 2016-02-04 | 2016-02-04 | Hydraulic pump and harvester with emergency braking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205524211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552922A (en) * | 2019-09-29 | 2019-12-10 | 潍柴动力股份有限公司 | closed hydraulic pump system and walking machine |
-
2016
- 2016-02-04 CN CN201620113782.4U patent/CN205524211U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552922A (en) * | 2019-09-29 | 2019-12-10 | 潍柴动力股份有限公司 | closed hydraulic pump system and walking machine |
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| GR01 | Patent grant |