CN204729286U - The oil pump of automatic speed regulation - Google Patents
The oil pump of automatic speed regulation Download PDFInfo
- Publication number
- CN204729286U CN204729286U CN201520320248.6U CN201520320248U CN204729286U CN 204729286 U CN204729286 U CN 204729286U CN 201520320248 U CN201520320248 U CN 201520320248U CN 204729286 U CN204729286 U CN 204729286U
- Authority
- CN
- China
- Prior art keywords
- oil
- draining
- valve seat
- throttle
- throttle valve
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F1/00—Devices, e.g. jacks, for lifting loads in predetermined steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The oil pump of automatic speed regulation, comprise the pump housing, pump core, with piston rod oil cylinder, press hand, valve rod of draining the oil, overcoat and valve body with pedal of draining the oil, also comprise arrangements for speed regulation, described arrangements for speed regulation are arranged on the oil duct of draining the oil between valve rod and oil cylinder or the oil circuit of draining the oil between valve rod and overcoat oil storage chamber; Described arrangements for speed regulation comprise the throttle valve seat be contained on valve body, throttling valve core, spring, the axial throttle screw with endoporus; Have step between the first paragraph of described throttle valve seat and second segment, described step end face or throttle valve seat second segment end face coordinate with the end face of throttle screw, the first gap described in formation and the valve between third space.The beneficial effects of the utility model are: speed of draining the oil time unloaded is slow, load is that the speed of draining the oil is fast, and both realizations regulate automatically, increase work efficiency.
Description
Technical field
The hydraulic liftings such as the utility model relates to a kind of hydraulic-pressure pump of automatic speed regulation, is mainly used in mowing machine repairing rack, motorcycle repairing rack, hydraulic jack machinery.
Background technique
Original technology completes jacking at repairing rack or jack, when needing to put down load, needs handle with sleeve (or with foot-operated) to open fuel outlet valve.When handle with sleeve or foot-operated time, need to control the small opening of fuel outlet valve to reach the object of slow decline of load, manipulation inconvenience.When control is bad, when fuel outlet valve is opened larger, load just declines fast, easily causes potential safety hazard.
Summary of the invention
Need control by regulating the opening of fuel outlet valve drain the oil speed, unhandy problem when the utility model is drained the oil for current hydraulic-pressure pump, proposing a kind of hydraulic-pressure pump that automatically automatically can regulate the automatic speed regulation of speed of draining the oil according to loading condition.
The oil pump of automatic speed regulation described in the utility model, comprise the pump housing, pump core, with piston rod oil cylinder, press hand, valve rod of draining the oil, overcoat and valve body with pedal of draining the oil, described press hand and described pump core top is hinged, described pump core is arranged on described pump housing inner chamber, and the outer cover of described pump core has pump core stage clip; Described overcoat is enclosed within the outside of described oil cylinder, and keep fixing by top cap and oil cylinder, the described pump housing and described oil cylinder are installed on valve body, the described pump housing is communicated with oil cylinder, it is characterized in that: also comprise arrangements for speed regulation, described arrangements for speed regulation are arranged on the oil duct of draining the oil between valve rod and oil cylinder or the oil duct of draining the oil between valve rod and overcoat oil storage chamber; Described arrangements for speed regulation comprise the throttle valve seat be contained on valve body, throttling valve core, spring, the axial throttle screw with endoporus; The end of the second segment of described throttle valve seat is against spring one end, and the spring the other end is against bottom throttle screw endoporus; Described throttling valve core is coaxially contained in the through hole in throttle valve seat, and throttle valve seat is arranged in the cavity of valve body; The first gap is had between the wall of the first paragraph of described throttle valve seat and described valve body cavity inner wall, the second gap is had between the wall of throttling valve core and described throttle valve seat through hole, have third space between the wall of the second segment of described throttle valve seat or the wall of second segment end face and described endoporus, the first described gap is greater than the second gap; The first described gap and the second gap are all communicated with the oil outlet of described oil cylinder in the end of the first paragraph of valve seat, the other end in the second gap is communicated with third space, and third space is communicated with oil storage chamber; Have step between the first paragraph of described throttle valve seat and second segment, described step end face or throttle valve seat second segment end face coordinate with the end face of throttle screw, the first gap described in formation and the valve between third space.
The first paragraph of described throttle valve seat drops on throttle screw endoporus outside, the second segment of throttle valve seat stretches in endoporus.
The first described gap width is greater than the width in the second described gap, and wherein the first gap, part third space form stream of draining the oil fast, the second gap and part third space and form stream of draining the oil at a slow speed; Spring in the raw under, the valve opening between the first described gap and third space, namely described step end face and the end face of throttle screw depart from; Under spring is in compressive state, the valve closing between the first described gap and third space, namely described step end face and the end face of throttle screw are closed and are fitted.
Described step end face is furnished with seal ring.
The intracavity bottom of the described pump housing is provided with turnover oilhole; Be provided with oil inlet and outlet bottom described oil cylinder, wherein filler opening is communicated with the oil outlet of the pump housing by the oil duct on valve body, and oil outlet is communicated with oil storage chamber by valve rod of draining the oil, throttle valve; Described pedal end of draining the oil is fixed with valve rod one end of draining the oil, and described valve stem end of draining the oil is against the side of steel ball, and the oil duct for the fluid that circulates that the opposite side of steel ball is communicated with oil cylinder mates.
Working principle: by trampling pedal of draining the oil, drive drain the oil valve rod rotate, the valve rod that makes to drain the oil outwards moves thus opens steel ball and realizes draining the oil to hydraulic oil in oil cylinder, when zero load, in the raw, now throttle valve seat under the action of the spring for spring, be separated with the end face of throttle screw, low pressure oil directly to reflux oil storage chamber (now hydraulic oil current through line cavity ratio is comparatively large, and hydraulic oil non-resistance refluxes, and realizes declining fast) along stream of draining the oil fast.When there being load to decline, by draining the oil, valve rod of draining the oil is rotated in step, under the effect of pressure oil, promote the effect that throttle valve seat overcomes spring, make throttle valve seat and on seal ring toward in Fig. 5 the right side motion, hold out against the left side of throttle screw, shut and fall oil circuit soon, make pressure oil can only along flow path of draining the oil at a slow speed.When repairing rack or jack etc. finish the work need put down load time, only need open fuel outlet valve, automatically reach the descending at slow speed when load, and the object declined fast time unloaded.
The beneficial effects of the utility model are: speed of draining the oil time unloaded is fast, declines fast, raises the efficiency; And speed of draining the oil during load is slow, band dynamic load steadily declines at a slow speed, achieves the two and automatically regulate, improve the working efficiency of equipment.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is sectional view of the present utility model.
Fig. 3 is the A-A view of Fig. 2.
Working state figure (arrow represents the flow direction of hydraulic oil) when Fig. 4 is (zero load) fast of the present utility model.
Working state figure (arrow represents the flow direction of hydraulic oil) when Fig. 5 is (load) at a slow speed of the present utility model.
Embodiment
The utility model is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
The oil pump of automatic speed regulation described in the utility model, comprise the pump housing 1, pump core 2, with piston rod 31 oil cylinder 3, press hand 4, valve rod 5 of draining the oil, overcoat 6 and valve body 7 with pedal 51 of draining the oil, it is described that to press hand 4 hinged with described pump core 2 top, described pump core 2 is arranged on the described pump housing 1 inner chamber, and the outer cover of described pump core 2 has pump core stage clip 21; Described overcoat 6 is enclosed within the outside of described oil cylinder 3, and keep fixing by top cap 61 and oil cylinder 3, the described pump housing 1 and described oil cylinder 3 are installed on valve body 7, the described pump housing 1 is communicated with oil cylinder 3, also comprise arrangements for speed regulation 8, described arrangements for speed regulation 8 are arranged on the oil duct of draining the oil between valve rod 5 and oil cylinder 3 or the oil duct of draining the oil between valve rod 5 and overcoat 6 oil storage chamber; Described arrangements for speed regulation 8 comprise the throttle valve seat 81 be contained on valve body 7, throttling valve core 82, spring 83, the axial throttle screw 84 with endoporus 841, the end of the second segment of described throttle valve seat 81 is against spring 83 one end, and spring 83 the other end is against bottom throttle screw 84 endoporus 841; Described throttling valve core 82 is coaxially contained in the through hole in throttle valve seat 81, and throttle valve seat 81 is arranged in the cavity of valve body 7; The first gap 811 is had between the wall of the first paragraph of described throttle valve seat 81 and described valve body 7 cavity inner wall, the second gap 821 is had between the wall of throttling valve core 82 and described throttle valve seat 81 through hole, have third space 812 between the wall of the second segment wall of described throttle valve seat 81 or second segment end face and described endoporus 841, the first described gap 811 is greater than the second gap 821; The first described gap 811 and the second gap 821 are all communicated with the oil outlet of described oil cylinder 3 in the end of the first paragraph of throttle valve seat 81, the other end in the second gap 821 is communicated with third space 812, and third space 812 is communicated with oil storage chamber; The end of the second segment of described throttle valve seat 81 is provided with spring 83, step is had between the first paragraph of throttle valve seat 81 and second segment, described step end face or throttle valve seat second segment end face coordinate with the end face of throttle screw 84, the first gap 811 described in formation and the valve between third space 812.
The first paragraph of described throttle valve seat 81 drops on throttle screw 84 endoporus outside, the second segment of throttle valve seat 81 stretches in endoporus 841.
Gap width between the first paragraph of described throttle valve seat 81 and valve body 7 cavity is greater than the width in the gap between described throttle valve seat 81 through hole and throttling valve core 82, and wherein the first gap 811, part third space 812 form stream of draining the oil fast, the second gap 821 and part third space 812 and form stream of draining the oil at a slow speed; Spring 83 in the raw under, the valve opening between the first described gap 811 and third space 812, namely described step end face and the end face of throttle screw 84 depart from; Under spring 83 is in compressive state, the valve closing between the first described gap 811 and third space 812, namely described step end face and the end face of throttle screw 84 are closed and are fitted.
Described step end face is furnished with seal ring 87.
The intracavity bottom of the described pump housing 1 is provided with turnover oilhole 11; Be provided with oil inlet and outlet 32 bottom described oil cylinder 3, wherein filler opening 32 is communicated with the oil outlet 11 of the pump housing 1 by the oil duct on valve body 7, and oil outlet is communicated with oil storage chamber by valve rod of draining the oil, throttle valve; Described pedal 51 end of draining the oil is fixed with valve rod 5 one end of draining the oil, and described valve rod 5 end of draining the oil is against the side of steel ball 52, and the oil duct 33 for the fluid that circulates that the opposite side of steel ball is communicated with oil cylinder 3 mates.
Working principle: by trampling pedal 51 of draining the oil, drive valve rod 5 of draining the oil rotates, making drains the oil the outside movement of valve rod 5 thus open steel ball realizes draining the oil to hydraulic oil in oil cylinder, when zero load, spring 83 in the raw, now throttle valve seat 81 step is under the effect of spring 83, be separated with the end face of throttle screw 84, low pressure oil directly refluxes along stream of draining the oil fast, and (now hydraulic oil current through line cavity ratio is larger for shoe cream room, hydraulic oil non-resistance refluxes, and realizes declining fast).When there being load to decline, by draining the oil, valve rod 5 of draining the oil is rotated in step 51, under the effect of pressure oil, promote the effect that throttle valve seat 81 overcomes spring 83, make throttle valve seat 81 and on seal ring 87 toward in Fig. 5 the right side motion, hold out against the end face of throttle screw 84, shut and fall oil circuit soon, make pressure oil can only along flow path of draining the oil at a slow speed.When repairing rack or jack etc. finish the work need put down load time, only need open fuel outlet valve 51, automatically reach the descending at slow speed when load, and the object declined fast time unloaded.
Content described in this specification embodiment is only enumerating the way of realization that model utility is conceived; protection domain of the present utility model should not be regarded as being only limitted to the concrete form that embodiment states, protection domain of the present utility model also comprises those skilled in the art and conceives the equivalent technologies means that can expect according to the utility model.
Claims (4)
1. the oil pump of automatic speed regulation, comprise the pump housing, pump core, with piston rod oil cylinder, press hand, valve rod of draining the oil, overcoat and valve body with pedal of draining the oil, described press hand and described pump core top is hinged, described pump core is arranged on described pump housing inner chamber, and the outer cover of described pump core has pump core stage clip; Described overcoat is enclosed within the outside of described oil cylinder, and keep fixing by top cap and oil cylinder, the described pump housing and described oil cylinder are installed on valve body, the described pump housing is communicated with oil cylinder, it is characterized in that: also comprise arrangements for speed regulation, described arrangements for speed regulation are arranged on the oil duct of draining the oil between valve rod and oil cylinder or the oil duct of draining the oil between valve rod and overcoat oil storage chamber; Described arrangements for speed regulation comprise the throttle valve seat be contained on valve body, throttling valve core, spring, the axial throttle screw with endoporus; The end of the second segment of described throttle valve seat is against spring one end, and the spring the other end is against bottom throttle screw endoporus; Described throttling valve core is coaxially contained in the through hole in throttle valve seat, and throttle valve seat is arranged in the cavity of valve body; The first gap is had between the wall of the first paragraph of described throttle valve seat and described valve body cavity inner wall, the second gap is had between the wall of throttling valve core and described throttle valve seat through hole, have third space between the wall of the second segment of described throttle valve seat or the wall of second segment end face and described endoporus, the first described gap is greater than the second gap; The first described gap and the second gap are all communicated with the oil outlet of described oil cylinder in the end of the first paragraph of valve seat, the other end in the second gap is communicated with third space, and third space is communicated with oil storage chamber; Have step between the first paragraph of described throttle valve seat and second segment, described step end face or throttle valve seat second segment end face coordinate with the end face of throttle screw, the first gap described in formation and the valve between third space.
2. the oil pump of automatic speed regulation as claimed in claim 1, is characterized in that: the first paragraph of described throttle valve seat drops on throttle screw endoporus outside, the second segment of throttle valve seat stretches in endoporus.
3. the oil pump of automatic speed regulation as claimed in claim 1, is characterized in that: described step end face is furnished with seal ring.
4. the oil pump of automatic speed regulation as claimed in claim 3, is characterized in that: the intracavity bottom of the described pump housing is provided with turnover oilhole; Be provided with oil inlet and outlet bottom described oil cylinder, wherein filler opening is communicated with the oil outlet of the pump housing by the oil duct on valve body, and oil outlet is communicated with oil storage chamber by valve rod of draining the oil, throttle valve; Described pedal end of draining the oil is fixed with valve rod one end of draining the oil, and described valve stem end of draining the oil is against the side of steel ball, and the oil duct for the fluid that circulates that the opposite side of steel ball is communicated with oil cylinder mates.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320248.6U CN204729286U (en) | 2015-05-18 | 2015-05-18 | The oil pump of automatic speed regulation |
| PCT/CN2015/090517 WO2016183995A1 (en) | 2015-05-18 | 2015-09-24 | Hydraulic oil pump with automatic speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320248.6U CN204729286U (en) | 2015-05-18 | 2015-05-18 | The oil pump of automatic speed regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204729286U true CN204729286U (en) | 2015-10-28 |
Family
ID=54387644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520320248.6U Active CN204729286U (en) | 2015-05-18 | 2015-05-18 | The oil pump of automatic speed regulation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204729286U (en) |
| WO (1) | WO2016183995A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052209A (en) * | 2018-10-17 | 2018-12-21 | 常熟通润汽车零部件股份有限公司 | Jack oil-returning structure and jack |
| CN112303046A (en) * | 2020-10-29 | 2021-02-02 | 平湖东来液压工具有限公司 | Hydraulic system of automobile repair platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109876487A (en) * | 2019-04-16 | 2019-06-14 | 安徽华尔泰化工股份有限公司 | A kind of novel distillation tower internals |
| TWI712745B (en) * | 2020-03-24 | 2020-12-11 | 勤工有限公司 | Hydraulic cylinder block unit with variable oil discharge passage |
| CN117895415B (en) * | 2024-03-14 | 2024-05-28 | 三一重型装备有限公司 | Cable protection device, pushing jack and hydraulic support |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06286985A (en) * | 1993-03-31 | 1994-10-11 | Koretsuku Kk | Hydraulic jack |
| CN1530318A (en) * | 2003-03-12 | 2004-09-22 | 信孚产业股份有限公司 | Oil recovery valve device with hydraulic oil flow control |
| US7421841B2 (en) * | 2003-09-23 | 2008-09-09 | Shinn Fu Corporation | Three-shift lifting mechanism for jack or the like |
| CN101700861A (en) * | 2009-10-14 | 2010-05-05 | 常熟通润汽车零部件股份有限公司 | Hydraulic jack with slow decline of load |
| CN201520614U (en) * | 2009-10-14 | 2010-07-07 | 常熟通润汽车零部件股份有限公司 | Hydraulic jack with load descending at slow speed |
| CN102092653B (en) * | 2011-03-11 | 2012-12-26 | 常熟市藕渠针织机械厂 | Oil pressure hoisting jack provided with safe release valve |
| CN102381658A (en) * | 2011-06-28 | 2012-03-21 | 常熟通润汽车千斤顶有限公司 | Integrated combined valve body for vertical type hydraulic jack |
-
2015
- 2015-05-18 CN CN201520320248.6U patent/CN204729286U/en active Active
- 2015-09-24 WO PCT/CN2015/090517 patent/WO2016183995A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052209A (en) * | 2018-10-17 | 2018-12-21 | 常熟通润汽车零部件股份有限公司 | Jack oil-returning structure and jack |
| CN109052209B (en) * | 2018-10-17 | 2024-02-20 | 常熟通润汽车零部件股份有限公司 | Jack oil return structure and jack |
| CN112303046A (en) * | 2020-10-29 | 2021-02-02 | 平湖东来液压工具有限公司 | Hydraulic system of automobile repair platform |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016183995A1 (en) | 2016-11-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |