CN201922928U - Hydraulic running differential device of snow thrower - Google Patents
Hydraulic running differential device of snow thrower Download PDFInfo
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- CN201922928U CN201922928U CN2011200283854U CN201120028385U CN201922928U CN 201922928 U CN201922928 U CN 201922928U CN 2011200283854 U CN2011200283854 U CN 2011200283854U CN 201120028385 U CN201120028385 U CN 201120028385U CN 201922928 U CN201922928 U CN 201922928U
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Abstract
The utility model provides a hydraulic running differential device of a snow thrower, comprising a hydraulic running system and a hydraulic brake system; the hydraulic running system comprises an electric proportional variable displacement pump and an electric variable displacement motor; an oil port A and an oil port B of the electric proportional variable displacement pump are respectively connected with an oil port AA and an oil port BB of the electric variable displacement motor correspondingly; the device is characterized by further comprising a differential control valve and a pressure relay, wherein one end of the differential control valve is communicated with an oil path A by a T joint A, and the other end of the differential control valve is communicated with an oil path B by a T joint B; the pressure relay is connected into a hydraulic pipe between a pedal brake valve and a front axle brake or a rear axle brake; and a signal wire of the pressure relay is connected with an electromagnetic reversing valve on the differential control valve.
Description
Technical field
The utility model belongs to the hydraulic efficiency pressure system field, particularly the hydraulic moving box of tricks of snow throwing machine.
Background technology
Big-and-middle-sized snow throwing machine (helical rotor formula) mainly is made up of driving engine, driving device, snow throwing device and car body.Driving device comprises vibration hydraulic system, steering hydraulic system, equipment hydraulic efficiency pressure system and hydraulic braking system.Engine driven Hydraulic Pump provides the hydraulic pressure energy to vibration hydraulic system, steering hydraulic system, equipment hydraulic efficiency pressure system and hydraulic braking system, and hydraulic actuator can be converted to mechanical energy with hydraulic pressure, realizes functions such as the snow throwing machine is walked, turned to, snow throwing.
The hydraulic travel system of snow throwing machine is made up of Hydraulic Pump, HM Hydraulic Motor, two grades of change speed gear boxs and front and back drive axle etc.Hydraulic efficiency pressure system is by a two way variable displacement pump and the enclosed ratio control circuit that variable-dis-placement motor is formed.Adopt microprocessor to carry out speed, travel direction and power division control.The input end of microprocessor has throttle, brake pedal, mode switch, forward/backward switch, pressure sensor and tachogen, and the output of microprocessor is connected with apportioning valve, electricity-controlling throttle implementation controller.Chaufeur is beaten power condition switch on the shelves that travel, and steps on stretcher, and control also swash plate angle of modulated pressure pump and HM Hydraulic Motor engine speed the time reaches control speed of a motor vehicle purpose; On limit power work shelves, step on stretcher, the control engine speed after microcontroller obtains hydraulic system pressure and engine speed, according to the swash plate angle of power division principle automatically regulating Hydraulic Pump, reaches limit power control purpose.
As mentioned above, the also swash plate angle of modulated pressure pump and HM Hydraulic Motor in the time of the rotating speed of chaufeur by the foot feed driving engine of stepping on the throttle realizes the startup of snow throwing machine, walking and speed changing function; Stop in travelling ramp to stop and two kinds of operating modes of sudden stop are arranged, ramp to stop is by unclamping accelerator pedal, modulated pressure pump swash plate angle makes zero and HM Hydraulic Motor swash plate angle maximum when reducing engine speed, and the snow throwing machine stops reducing gradually under the driving power; Sudden stop is to depress the pedal brake valve after unclamping Das Gaspedal rapidly, forward and backward bridge drg stopping-down.Yet this process exists Hydraulic Pump swash plate angle not make zero as yet, and drg damped condition, because of two grades of change speed gear boxs do not have clutch function, this moment, hydraulic system pressure sharply rose to safety valve setting pressure, caused safety valve to open overflow, and its result is with produce power loss and car impact.(described swash plate is a stroking mechanism of Hydraulic Pump, and the change of its angle can realize the variation of delivery rate.)
The utility model content
In order to address the above problem, the utility model provides a kind of snow throwing machine hydraulic moving differential gear.
The utility model adopts following technical scheme:
Snow throwing machine hydraulic moving differential gear comprises vibration hydraulic system, hydraulic braking system; Described vibration hydraulic system comprises electric proportional variable pump and electric rate variable motor; Hydraulic fluid port A, the hydraulic fluid port B of electricity proportional variable pump are connected with the cooresponding hydraulic fluid port AA of electric rate variable motor, hydraulic fluid port BB respectively, and wherein, the connecting line of hydraulic fluid port A and hydraulic fluid port AA is oil circuit A, and the connecting line of hydraulic fluid port B and hydraulic fluid port BB is oil circuit B; Described hydraulic braking system comprises Hydraulic Pump, prefill valve, pedal brake valve, propons drg and back axle drg; Wherein, the Hydraulic Pump oil outlet is connected with the prefill valve oil inlet; After two oil outlets of prefill valve connect energy storage respectively, insert the pedal brake valve inlet again; The pedal brake valve outlet port is connected with propons drg, back axle drg respectively; Be characterized in, also comprise differential control cock and pressure relay, wherein, an end of differential control cock is connected oil circuit A by T-pipe joint A, and the other end of differential control cock is connected oil circuit B by T-pipe joint B; Pressure relay inserts in the hydraulic tubing between pedal brake valve and propons drg or the back axle drg, and the signal wire (SW) of pressure relay is connected with solenoid directional control valve on the differential control cock.
Compared with prior art, the beneficial effects of the utility model are: by the action of hydraulic braking system pressure relay control differential control cock, realize vibration hydraulic system oil circuit A and oil circuit B short circuit.Even electric rate variable POF, because electric rate variable motor hydraulic fluid port A A, hydraulic fluid port BB realize short circuit, snow throwing machine vibration hydraulic system can overcome degradation of energy and car impact effectively in unpowered braking down; Both energy-saving and environmental protection have guaranteed the reliability and the safety of machine works again.
Description of drawings
Fig. 1 is the utility model structural representation, wherein, and 1. electric proportional variable pump, 2. hydraulic fluid port A, 3. hydraulic fluid port B, 4. Hydraulic Pump, 5. differential control cock, 6. hydraulic fluid port BB, 7. hydraulic fluid port AA, 8. electric rate variable motor, 9. suck back oily oil filter, 10. back axle drg, 11. propons drgs, 12. pressure relay, 13. pedal brake valves, 14. prefill valves, 15. energy storage, 16. oil circuit A, 17. oil circuit B.
Fig. 2 is a differential control cock structural representation among Fig. 1, wherein, and 18. T-pipe joint A, 19. take over A, the blue A of 20. bisection methods, 21. cover plates, 22. valve pocket, 23. shuttle valves, 24. springs, 25. spool, 26. solenoid directional control valves, 27. valve bodies, 28. back leakage connection, 29. the blue B of bisection method, 30. take over B, 31. T-pipe joint B.
The specific embodiment
For further understanding technology contents of the present utility model, characteristics and effect, enumerate following example now, and conjunction with figs. is described in detail as follows:
With reference to accompanying drawing 1, Fig. 2: snow throwing machine hydraulic moving differential gear comprises vibration hydraulic system, hydraulic braking system; Described vibration hydraulic system comprises electric proportional variable pump 1 and electric rate variable motor 8; Hydraulic fluid port A 2, the hydraulic fluid port B 3 of electricity proportional variable pump 1 are connected with electric rate variable motor 8 cooresponding hydraulic fluid port AA 7, hydraulic fluid port BB 6, and wherein, hydraulic fluid port A 2 is oil circuit A 16 with hydraulic fluid port AA 7 connecting lines, and hydraulic fluid port B 3 is oil circuit B 17 with hydraulic fluid port BB 6 connecting lines; Described hydraulic braking system comprises Hydraulic Pump 4, prefill valve 14, pedal brake valve 13, propons drg 11 and back axle drg 10; Wherein, Hydraulic Pump 4 outlets are connected with prefill valve 14 oil inlets; After two oil outlets of prefill valve 14 connect energy storage 15 respectively, insert pedal brake valve 13 inlets again; 13 outlets of pedal brake valve are connected with propons drg 11, back axle drg 10 respectively; Be characterized in, also comprise differential control cock 5 and pressure relay 12, wherein, differential control cock 5 is connected in the oil circuit A 16 by T-pipe joint A 18, and differential control cock 5 is connected in the oil circuit B 17 by T-pipe joint B31; Pressure relay 12 inserts in the hydraulic tubing between pedal brake valves 13 and propons drg 11 or the back axle drg 10, and the signal wire (SW) of pressure relay 12 is connected with solenoid directional control valve 26 on the differential control cock 5.
Referring to accompanying drawing 2, described differential control cock 5 is made up of T-pipe joint A 18, adapter A 19, the blue A20 of bisection method, cover plate 21, valve pocket 22, shuttle valve 23, spring 24, spool 25, solenoid directional control valve 26, valve body 27, back leakage connection 28, the blue B 29 of bisection method, adapter B 30, T-pipe joint B 31; Wherein, valve pocket 22, spring 24 and spool 25 are installed in the valve body 27, and spool 25 is positioned at valve pocket 22, and spring 24 is installed in the spool 25; Valve body 27 and cover plate 21 are affixed by screw; The cavity that spool 25 and valve pocket 22 and cover plate 21 are formed is an epicoele, and the cavity that spool 25 and valve pocket 22 and valve body 27 are formed is a cavity of resorption; Two oil inlets of shuttle valve 23 are communicated with spool 25 and cavity of resorption respectively by the oil flow channel on the valve body 27, and the oil outlet of shuttle valve 23 is connected with solenoid directional control valve 26 oil inlets; The commutation hydraulic fluid port of solenoid directional control valve 26 is communicated with epicoele by the hole A on the cover plate 21; The return opening of solenoid directional control valve 26 is communicated with back leakage connection 28 on the valve body 27 by the hole B on the cover plate 21; Captive joint with valve body 27 with cover plate 21, solenoid directional control valve 26 that shuttle valve 23 links together, the end of T-pipe joint B 31 is communicated with cavity of resorption; The end of T-pipe joint A 18 is communicated with spool 25, and the other two ends of T-pipe joint A 18 are connected on the oil circuit A 16, T-pipe joint B31 other two ends be connected on the oil circuit B 17.
Described T-pipe joint A18 is screwed in by nut and takes on the A19, takes over A19 and is fixed into one by blue A20 of bisection method and valve body 27.
Described T-pipe joint B31 is screwed in by nut and takes on the B30, takes over B30 and is fixed into one by blue B29 of bisection method and valve body 27.
Described epicoele is 2: 1 with the ratio of following cavity area.
The concrete structure of present embodiment and course of action thereof:
During cruising, pedal brake valve 13 is not worked, pressure relay 12 no signals control solenoid directional control valve 26, if vibration hydraulic system oil circuit B 17 is a high-voltage oil liquid, pressure oil acts on differential control cock 5 cavity of resorptions, acts on epicoele through shuttle valve 23, solenoid directional control valve 26 simultaneously, because the effect of upper and lower cavity area difference, spool 25 is closed, and oil circuit B 17 high-voltage oil liquids are prevented from entering oil circuit A 16; Otherwise when oil circuit A 16 fed high-voltage oil liquid, pressure oil acted on the spool 25 of differential control cock 5, act on epicoele by shuttle valve 23, solenoid directional control valve 26 simultaneously, same spool 25 is closed owing to the effect of upper and lower cavity area difference, and oil circuit A 16 high-voltage oil liquids also can not enter oil circuit B 17.When therefore solenoid directional control valve 26 cut off the power supply, electric proportional variable pump 1 output hydraulic oil can only enter electric rate variable motor 8, drives electric rate variable motor 8 and rotates, thereby realize that vehicle moves forward and backward.
Snow throwing machine driving process sudden stop, chaufeur unclamps Das Gaspedal rapidly, depress pedal brake valve 13 rapidly, because the time delay that Das Gaspedal resets, electricity proportional variable pump 1 swash plate slowly changes to zero-bit from control position, and pressure oil enters in propons drg 11 and the back axle drg 10 by pedal brake valve 13 in the energy storage 15, increase along with foot-operated power, pedal brake valve 13 delivery pressures raise gradually, in case reach pressure relay 12 setting value 3MPa (this moment, the braking force deficiency was so that car brakeing), send 26 energisings of signal control solenoid directional control valve, differential control cock 5 epicoeles and fuel tank together with, oil circuit A 16 is communicated with oil circuit B 17, be the hydraulic fluid port A 2 and hydraulic fluid port B 3 short circuits of electric proportional variable pump 1, electricity rate variable motor 8 hydraulic fluid port BB 6, hydraulic fluid port AA 7 short circuits, electricity proportional variable pump 1 decompression, electric rate variable motor 8 runs out of steam and is under the free gear state.Inertia drives electric rate variable motor 8 rotations because the snow throwing machine travels, and the vehicle to run system is slided forward under unpowered driving, and its stopping distance depends on foot pressure.
Claims (5)
1. snow throwing machine hydraulic moving differential gear comprises vibration hydraulic system, hydraulic braking system; Described vibration hydraulic system comprises electric proportional variable pump and electric rate variable motor; Hydraulic fluid port A, the hydraulic fluid port B of electricity proportional variable pump are connected with the cooresponding hydraulic fluid port AA of electric rate variable motor, hydraulic fluid port BB respectively, and wherein, the connecting line of hydraulic fluid port A and hydraulic fluid port AA is oil circuit A, and the connecting line of hydraulic fluid port B and hydraulic fluid port BB is oil circuit B; Described hydraulic braking system comprises Hydraulic Pump, prefill valve, pedal brake valve, propons drg and back axle drg; Wherein, the Hydraulic Pump oil outlet is connected with the prefill valve oil inlet; After two oil outlets of prefill valve connect energy storage respectively, insert the pedal brake valve inlet again; The pedal brake valve outlet port is connected with propons drg, back axle drg respectively; Be characterized in, also comprise differential control cock and pressure relay, wherein, an end of differential control cock is connected oil circuit A by T-pipe joint A, and the other end of differential control cock is connected oil circuit B by T-pipe joint B; Pressure relay inserts in the hydraulic tubing between pedal brake valve and propons drg or the back axle drg, and the signal wire (SW) of pressure relay is connected with solenoid directional control valve on the differential control cock.
2. snow throwing machine hydraulic moving differential gear according to claim 1, be characterized in that described differential control cock is made up of T-pipe joint A, adapter A, the blue A of bisection method, cover plate, valve pocket, shuttle valve, spring, spool, solenoid directional control valve, valve body, back leakage connection, the blue B of bisection method, adapter B, T-pipe joint B; Wherein, valve pocket, spring and spool are installed in the valve body, and spool is positioned at valve pocket, and spring is installed in the spool; Valve body and cover plate are affixed by screw; The cavity that spool and valve pocket and cover plate are formed is an epicoele, and the cavity that spool and valve pocket and valve body are formed is a cavity of resorption; Two oil inlets of shuttle valve are communicated with spool and cavity of resorption respectively by the oil flow channel on the valve body, and the oil outlet of shuttle valve is connected with the solenoid directional control valve oil inlet; The commutation hydraulic fluid port of solenoid directional control valve is communicated with epicoele by the hole A on the cover plate; The return opening of solenoid directional control valve 26 is communicated with back leakage connection on the valve body by the hole B on the cover plate; Captive joint with valve body with cover plate, solenoid directional control valve that shuttle valve links together, the end of T-pipe joint B is communicated with cavity of resorption; The end of T-pipe joint A is communicated with spool, and the other two ends of T-pipe joint A are connected on the oil circuit A, T-pipe joint B other two ends be connected on the oil circuit B.
3. snow throwing machine hydraulic moving differential gear according to claim 1 is characterized in, described T-pipe joint A is screwed in by nut and takes on the A, takes over A and is fixed into one by blue A of bisection method and valve body.
4. snow throwing machine hydraulic moving differential gear according to claim 1 is characterized in, described T-pipe joint B is screwed in by nut and takes on the B, takes over B and is fixed into one by blue B of bisection method and valve body.
5. snow throwing machine hydraulic moving differential gear according to claim 1 is characterized in, described epicoele is 2: 1 with the ratio of following cavity area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200283854U CN201922928U (en) | 2011-01-27 | 2011-01-27 | Hydraulic running differential device of snow thrower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200283854U CN201922928U (en) | 2011-01-27 | 2011-01-27 | Hydraulic running differential device of snow thrower |
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| Publication Number | Publication Date |
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| CN201922928U true CN201922928U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200283854U Expired - Fee Related CN201922928U (en) | 2011-01-27 | 2011-01-27 | Hydraulic running differential device of snow thrower |
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| CN (1) | CN201922928U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616132A (en) * | 2011-01-27 | 2012-08-01 | 天津市友达机电液成套设备有限公司 | Hydraulic traveling differential mechanism of snow blower |
| CN107020949A (en) * | 2016-01-29 | 2017-08-08 | 中冶宝钢技术服务有限公司 | Hydrostatic driving running gear with interflow differential and shunting differential lock module |
| CN108180179A (en) * | 2017-12-29 | 2018-06-19 | 连云港海润包装有限公司 | Maize harvesting machine hydraulic travel system |
| CN109654075A (en) * | 2018-12-07 | 2019-04-19 | 贵州航天特种车有限责任公司 | A kind of walking fluid power system on chassis |
| CN115352419A (en) * | 2022-08-23 | 2022-11-18 | 中国人民解放军陆军装甲兵学院 | Hydraulic control system and method for snow pressing vehicle capable of recycling braking energy |
-
2011
- 2011-01-27 CN CN2011200283854U patent/CN201922928U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616132A (en) * | 2011-01-27 | 2012-08-01 | 天津市友达机电液成套设备有限公司 | Hydraulic traveling differential mechanism of snow blower |
| CN102616132B (en) * | 2011-01-27 | 2015-04-29 | 天津程普工程机械有限公司 | Hydraulic traveling differential mechanism of snow blower |
| CN107020949A (en) * | 2016-01-29 | 2017-08-08 | 中冶宝钢技术服务有限公司 | Hydrostatic driving running gear with interflow differential and shunting differential lock module |
| CN107020949B (en) * | 2016-01-29 | 2023-08-01 | 中冶宝钢技术服务有限公司 | Hydrostatic drive traveling system with converging differential and diverging differential lock modules |
| CN108180179A (en) * | 2017-12-29 | 2018-06-19 | 连云港海润包装有限公司 | Maize harvesting machine hydraulic travel system |
| CN109654075A (en) * | 2018-12-07 | 2019-04-19 | 贵州航天特种车有限责任公司 | A kind of walking fluid power system on chassis |
| CN115352419A (en) * | 2022-08-23 | 2022-11-18 | 中国人民解放军陆军装甲兵学院 | Hydraulic control system and method for snow pressing vehicle capable of recycling braking energy |
| CN115352419B (en) * | 2022-08-23 | 2024-04-16 | 中国人民解放军陆军装甲兵学院 | Hydraulic control system and method for snow pressing vehicle capable of recycling braking energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN CHENGPU ENGINEERING MACHINERY CO., LTD. Free format text: FORMER OWNER: TIANJIN YOUDA ELECTROMECHANICAL HYDRAULIC COMPLETE EQUIPMENT CO., LTD. Effective date: 20130529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300393 XIQING, TIANJIN TO: 300380 XIQING, TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130529 Address after: Tianjin city Xiqing District Yangliuqing town 300380 green road to the east side of South Patentee after: TIANJIN CHENGPU ENGINEERING MACHINERY CO., LTD. Address before: 300393, No. 3, Xingguang Road, North Industrial Park, Middle North Town, Xiqing District, Tianjin Patentee before: Tianjin Youda Electromechanical Hydraulic Complete Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20150127 |
|
| EXPY | Termination of patent right or utility model |