CN102092655A - Power-driven hydraulic jack provided with load power-off protective device - Google Patents
Power-driven hydraulic jack provided with load power-off protective device Download PDFInfo
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- CN102092655A CN102092655A CN 201110052162 CN201110052162A CN102092655A CN 102092655 A CN102092655 A CN 102092655A CN 201110052162 CN201110052162 CN 201110052162 CN 201110052162 A CN201110052162 A CN 201110052162A CN 102092655 A CN102092655 A CN 102092655A
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Abstract
The invention relates to a power-driven hydraulic jack. The power-driven hydraulic jack comprises a control valve, the control valve comprises a valve seat, a valve body, an electromagnetic coil and a valve core, the cavity of the valve body is composed of an oil chamber and a magnetic core cavity, the bottom of the oil chamber is provided with a convex oil inlet, the exterior of the oil inlet is connected with an oil pump, the oil pump is connected with an oil tank, the upper part of the magnetic core cavity is provided with an oil outlet, the interior of the oil outlet is connected with an oil cavity, and the exterior of the oil outlet is connected with a hydraulic jacking device; the valve core is arranged in the valve body, the upper part of the valve core is a magnetic core, the electromagnetic coil is arranged outside the valve body and is matched with the magnetic core, the lower part of the valve core is provided with an annular boss, a first spring is arranged between the annular boss and the magnetic core cavity, the bottom of the magnetic core is provided with a sealing gasket, and the sealing gasket is over against the oil inlet for sealing the oil inlet when the motor is powered off. In the invention, the operation of the power-driven hydraulic jack is controlled by virtue of electromagnetic control, and the whole oil circuit is convenient to design, thus the structure of the product is simpler and the production cost is saved.
Description
Technical field
The present invention relates to a kind of electric hydaulic jack, relate in particular to a kind of electric hydaulic jack with the load power-off protection apparatus.
Background technology
Car generally adopts hydraulic structure with jack, makes the top of jack lift device by manual modulated pressure oil and rises, and the general texture ratio of this jack is heavy, be difficult for carrying, and the operation effort.Existing the appearance adopts the Vehicle Power socket to draw the electric hydraulic jack of power supply.
As Chinese utility model patent (application number: 200620107377.8 applyings date: 2006-09-04) disclose a kind of Vehicular electric hydraulic jack, this jack comprises oil sources case and described oil sources case bonded assembly motor, by the oil pump of driven by motor and be provided with the oil cylinder of piston rod, be provided with unidirectional controlled valve between described oil pump and the oil cylinder, unidirectional controlled valve is provided with the valve cavity, described valve cavity comprises valve cavity and lower valve cavity, be provided with the first logical hydraulic fluid port between described two valve cavitys, described going up in the valve cavity is provided with the check valve that can adjust the oil circuit direction with the forward and reverse rotation of motor, be provided with in the described lower valve cavity can be with the forward and reverse rotation of motor axially movable push rod component.
As Chinese utility model patent (application number: 200920304975.8 applyings date: 2009-06-24) disclose hydraulic jacking mechanism, this mechanism comprises oil cylinder, fuel tank, the oil pump that communicates with fuel tank, with the joining motor of oil pump, be provided with push rod in the oil cylinder, the inner end of push rod is provided with piston, piston is divided into oil cylinder and stretches out oil pocket and indentation oil pocket, oil pump respectively by delivery line with stretch out oil pocket and the indentation oil pocket communicates, described delivery line is provided with balance cock, this balance cock comprises compensating cylinder and is located at the interior balanced plug of compensating cylinder, balanced plug is divided into left chamber and right chamber to compensating cylinder, chamber, a left side with stretch out oil pocket and communicate, right chamber communicates with the indentation oil pocket, in left chamber and right chamber, be respectively equipped with the plugging structure of the activity that is used for shutoff hydraulic oil, described two delivery lines pass through plugging structure respectively, described balanced plug can be slided in compensating cylinder, and balanced plug can make a certain plugging structure conducting after sliding.
The applicant has applied for that in 2011-1-28 (application number: 201110031310.6) this patent application discloses a kind of vehicle electric hydaulic jack device to a kind of vehicle with the electric hydaulic jack device, be provided with the oil cylinder cavity in the by-pass valve control body of this device, slide in the oil cylinder cavity and be provided with sliding shoe, sliding shoe is divided into first cavity and second cavity with the oil cylinder cavity, be respectively equipped with the first logical hydraulic fluid port on first cavity and second cavity, be respectively equipped with the elastic component that is used to seal the first logical hydraulic fluid port on the first logical hydraulic fluid port, the outside of two first logical hydraulic fluid ports then connects described hydraulic jack device and described fuel tank by oil circuit respectively; The two ends of described sliding shoe are respectively equipped with push rod, and push rod is respectively over against elastic component, and push rod is selected one with the sliding shoe motion and backed down an elastic component one first logical hydraulic fluid port is opened wide; And being respectively equipped with first oilhole at first cavity and second cavity, first oilhole connects the oil inlet and the oil outlet of oil pump respectively by oil circuit.
The product of above-mentioned patent is not provided with overload safety device, if therefore the overload phenomenon takes place, then can cause damage of product to take place.
Summary of the invention
The antioverloading resist technology defective that does not have for the product that solves above-mentioned patent; the purpose of this invention is to provide a kind of electric hydaulic jack with the load power-off protection apparatus; this jack has the load power-off protection apparatus; described load power-off protection apparatus has simple in structure, implements characteristics easily.
In order to realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of electric hydaulic jack with the load power-off protection apparatus; this jack comprises hydraulic jack device, fuel tank, motor, oil pump and by-pass valve control; the hydraulic jack device connects by-pass valve control by oil circuit; by-pass valve control connects described oil pump; oil pump connects fuel tank; described oil circuit is provided with the load power-off protection apparatus, and the load power-off protection apparatus is made of touch switch and hydraulic trigger, and touch switch touches and is used to control the motor outage.
As further improvement, above-mentioned hydraulic trigger is by the binary pair valve body, touch pole and pressure regulation plug constitute, the binary pair valve interior wall is provided with annular ring and body cavity is divided into by upper cavity and lower chamber constitutes, upper cavity connects described oil circuit, the pressure regulation plug is arranged in the lower chamber by screw thread, the top of touch pole is arranged in the upper cavity, be provided with seal ring between touch pole and the annular ring, the bottom of touch pole is passed annular ring and is arranged in the lower chamber, the bottom passes the pressure regulation plug and matches with touch switch, and be provided with spring in the bottom of touch pole, and spring one end and pressure regulation plug offset, and the other end offsets with the boss that is arranged on the touch pole.
The present invention is when load pressure during greater than 1.2T (this value can be adjusted setting), and touch switch touches and is used to control the motor outage, and motor can't be worked, in order to avoid damage product because of overload.
Description of drawings
Fig. 1 is oil circuit principle of design figure of the present invention.
Fig. 2 is the structural representation of load power-off protection apparatus of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present invention is made a detailed explanation.
A kind of electric hydaulic jack as shown in Figure 1 with the load power-off protection apparatus; this jack comprises hydraulic jack device 1, fuel tank 4, motor 6, oil pump 5 and by-pass valve control 3; hydraulic jack device 1 connects by-pass valve control 3 by oil circuit 2; by-pass valve control 3 connects described oil pump 5; oil pump 5 connects fuel tank 4; described oil circuit 2 is provided with load power-off protection apparatus 7, and load power-off protection apparatus 7 is made of touch switch 8 and hydraulic trigger, and touch switch 8 touches and is used to control motor 4 outages.
As shown in Figure 2, hydraulic trigger is by binary pair valve body 71, touch pole 73 and pressure regulation plug 74 constitute, binary pair valve body 71 inwalls are provided with annular ring 72 and valve body 11 inner chambers are divided into by upper cavity and lower chamber constitute, upper cavity connects described oil circuit 2, pressure regulation plug 74 is arranged in the lower chamber by screw thread, the top of touch pole 73 is arranged in the upper cavity, the bottom is passed annular ring 72 and is arranged in the lower chamber, be provided with seal ring 75 between touch pole 73 and the annular ring 72, the bottom of touch pole 73 passes pressure regulation plug 74 and matches with touch switch 8, and be provided with second spring 77 in the bottom of touch pole 73, second spring, 77 1 ends and pressure regulation plug 74 offset, and the other end offsets with the boss 76 that is arranged on the touch pole 73.When load pressure during greater than 1.2T (this value can be adjusted setting), second spring, 77 compressions this moment, touch pole 73 backs down touch switch 8, and rising is opened circuit, and can't work, in order to avoid damage product because of overload.
Claims (2)
1. electric hydaulic jack with the load power-off protection apparatus; this jack comprises hydraulic jack device (1); fuel tank (4); motor (6); oil pump (5) and by-pass valve control (3); hydraulic jack device (1) connects by-pass valve control (3) by oil circuit (2); by-pass valve control (3) connects described oil pump (5); oil pump (5) connects fuel tank (4); it is characterized in that: described oil circuit (2) is provided with load power-off protection apparatus (7); load power-off protection apparatus (7) is made of touch switch (8) and hydraulic trigger, and touch switch (8) touches and is used to control motor (5) outage.
2. a kind of electric hydaulic jack according to claim 1 with the load power-off protection apparatus; it is characterized in that: hydraulic trigger is by binary pair valve body (71); touch pole (73) and pressure regulation plug (74) constitute; binary pair valve body (71) inwall is provided with annular ring (72) and valve body (11) inner chamber is divided into by upper cavity and lower chamber constitutes; upper cavity connects described oil circuit (2); pressure regulation plug (74) is arranged in the lower chamber by screw thread; the top of touch pole (73) is arranged in the upper cavity; be provided with seal ring (75) between touch pole (73) and the annular ring (72); the bottom of touch pole (73) is passed annular ring (72) and is arranged in the lower chamber; the bottom passes pressure regulation plug (74) and matches with touch switch (8); and be provided with second spring (77) in the bottom of touch pole (73); second spring (77) one ends and pressure regulation plug (74) offset, and the other end offsets with the boss (76) that is arranged on the touch pole (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100521626A CN102092655B (en) | 2011-03-04 | 2011-03-04 | Power-driven hydraulic jack provided with load power-off protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100521626A CN102092655B (en) | 2011-03-04 | 2011-03-04 | Power-driven hydraulic jack provided with load power-off protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102092655A true CN102092655A (en) | 2011-06-15 |
| CN102092655B CN102092655B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100521626A Active CN102092655B (en) | 2011-03-04 | 2011-03-04 | Power-driven hydraulic jack provided with load power-off protective device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295254A (en) * | 2011-09-02 | 2011-12-28 | 陈海波 | Load-change-based anti-collision safety control system for overhead working truck |
| CN102530764A (en) * | 2012-01-13 | 2012-07-04 | 温岭市鑫磊空压机有限公司 | Vehicular dual-purpose electric hydraulic jack with arrested descending preventing function |
| CN102556886A (en) * | 2012-01-13 | 2012-07-11 | 温岭市鑫磊空压机有限公司 | Electro-hydraulic jack having device capable of preventing resistance to drop-down |
| CN111293635A (en) * | 2020-03-27 | 2020-06-16 | 南京信息职业技术学院 | Cable cutter |
Citations (5)
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| CN2247652Y (en) * | 1996-01-23 | 1997-02-19 | 河南石油勘探局钻井工程公司 | Hydraulic over-load protection device |
| WO2006105824A1 (en) * | 2005-04-08 | 2006-10-12 | Atrium Enterprises Gmbh | Lifting unit |
| CN2875786Y (en) * | 2006-01-05 | 2007-03-07 | 威思威璐精机(上海)有限公司 | Protective device for gas liquid overload |
| CN101597015A (en) * | 2009-06-24 | 2009-12-09 | 陈华军 | Hydraulic jacking mechanism |
| CN201971592U (en) * | 2011-03-04 | 2011-09-14 | 温岭市鑫磊空压机有限公司 | Electro-hydraulic jack with overload power-off protecting device |
-
2011
- 2011-03-04 CN CN2011100521626A patent/CN102092655B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247652Y (en) * | 1996-01-23 | 1997-02-19 | 河南石油勘探局钻井工程公司 | Hydraulic over-load protection device |
| WO2006105824A1 (en) * | 2005-04-08 | 2006-10-12 | Atrium Enterprises Gmbh | Lifting unit |
| CN2875786Y (en) * | 2006-01-05 | 2007-03-07 | 威思威璐精机(上海)有限公司 | Protective device for gas liquid overload |
| CN101597015A (en) * | 2009-06-24 | 2009-12-09 | 陈华军 | Hydraulic jacking mechanism |
| CN201971592U (en) * | 2011-03-04 | 2011-09-14 | 温岭市鑫磊空压机有限公司 | Electro-hydraulic jack with overload power-off protecting device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295254A (en) * | 2011-09-02 | 2011-12-28 | 陈海波 | Load-change-based anti-collision safety control system for overhead working truck |
| CN102530764A (en) * | 2012-01-13 | 2012-07-04 | 温岭市鑫磊空压机有限公司 | Vehicular dual-purpose electric hydraulic jack with arrested descending preventing function |
| CN102556886A (en) * | 2012-01-13 | 2012-07-11 | 温岭市鑫磊空压机有限公司 | Electro-hydraulic jack having device capable of preventing resistance to drop-down |
| CN102556886B (en) * | 2012-01-13 | 2013-12-04 | 温岭市鑫磊空压机有限公司 | Electro-hydraulic jack having device capable of preventing resistance to drop-down |
| CN102530764B (en) * | 2012-01-13 | 2014-01-15 | 温岭市鑫磊空压机有限公司 | Vehicular dual-purpose electric hydraulic jack with arrested descending preventing function |
| CN111293635A (en) * | 2020-03-27 | 2020-06-16 | 南京信息职业技术学院 | Cable cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102092655B (en) | 2012-11-28 |
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Address after: 317500 Zhejiang city of Taizhou province Wenling City Industrial City Wenling Xinlei Air Compressor Co. Ltd. Patentee after: Compressor Xinlei Limited by Share Ltd Address before: 317500 Zhejiang city of Taizhou province Wenling City Industrial City Wenling Xinlei Air Compressor Co. Ltd. Patentee before: Wenling Xinlei Air Compressor Co., Ltd. |