CN202558549U - Oil pump for jack - Google Patents

Oil pump for jack Download PDF

Info

Publication number
CN202558549U
CN202558549U CN2012202301264U CN201220230126U CN202558549U CN 202558549 U CN202558549 U CN 202558549U CN 2012202301264 U CN2012202301264 U CN 2012202301264U CN 201220230126 U CN201220230126 U CN 201220230126U CN 202558549 U CN202558549 U CN 202558549U
Authority
CN
China
Prior art keywords
valve
hole
steel ball
jack
screw
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.)
Expired - Fee Related
Application number
CN2012202301264U
Other languages
Chinese (zh)
Inventor
林连明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Yi Peng Machinery Co Ltd
Original Assignee
Zhejiang Yi Peng Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Yi Peng Machinery Co Ltd filed Critical Zhejiang Yi Peng Machinery Co Ltd
Priority to CN2012202301264U priority Critical patent/CN202558549U/en
Application granted granted Critical
Publication of CN202558549U publication Critical patent/CN202558549U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to the field of hoisting tools, in particular to an oil pump for a jack. The oil pump for the jack comprises a valve body, a valve core, a valve body screw, a pressure ring, a first steel ball valve and a second steel ball valve, wherein one end of the valve core is arranged in the valve body, the other end of the valve core passes through the valve body, a blind hole and a first through hole are arranged on the lower end of the valve core, the first steel ball valve is arranged in the first through hole, the pressure spring is arranged in the blind hole, the valve body screw is fixed on the lower portion of the blind hole, a second through hole is arranged on the valve body screw, the second steel ball valve is arranged between the pressure spring and the valve body screw, and is pressed on the upper end of the second through hole, and a third through hole is arranged on the side wall of the valve core, and is communicated with the blind hole. The oil pump for the jack is simple in structure and convenient, safe and reliable to operate.

Description

A kind of jack is used oil pump
Technical field
The utility model relates to the lifting gear field, and specifically a kind of jack is used oil pump.
Background technology
Present existing jack lifting velocity when load is little is slow; The operating needs that out of reach is general; If use then cause damage of components easily but general quick pump surpasses builder's tonnage continuation in limited time in load, cause safety hazard to produce, therefore have certain limitation.
The utility model content
The utility model provides a kind of simple in structure, easy to operate, safe and reliable jack to use oil pump.
The utility model is realized through following technical proposals:
A kind of jack is used oil pump, comprises valve body, spool, valve body screw, stage clip, the first steel ball valve and the second steel ball valve, and said spool one end is located at said valve inner; The other end passes said valve body, and said spool lower end is provided with the blind hole and first through hole, and the said first steel ball valve is located in said first through hole; Said stage clip is located in the said blind hole, and said valve body screw is fixed in said blind hole bottom, and said valve body screw is provided with second through hole; The said second steel ball valve is located between said stage clip and the valve body screw; And being pressed on said second through hole upper end, said spool sidewall is provided with third through-hole, and connects with said blind hole.
Said spool lower outside wall is provided with a circle groove, is provided with seal ring in the said groove.
Said valve body upper end madial wall is provided with two circle seal grooves, is provided with O type circle in the said seal groove.
The beneficial effect that the utility model brought is:
In the utility model, said jack comprises valve body, spool, valve body screw, stage clip, the first steel ball valve and the second steel ball valve with oil pump, when the said pump housing in oil-absorbing process, the said second steel ball valve cuts out; The first steel ball valve is opened, and is filled hydraulic oil in the said valve body, when load is prescribed a time limit less than builder's tonnage; Said spool moves downward, and at this moment, the said second steel ball valve cuts out; The first steel ball valve cuts out, and the hydraulic oil in the valve body is injected fuel tank, and be quick pump this moment; When load is prescribed a time limit greater than builder's tonnage, said spool moves downward, at this moment; The said second steel ball valve pressurized is opened, and the first steel ball valve cuts out, and part hydraulic oil is through the second steel ball valve and third through-hole upward movement; With jack stand, because the oil mass that when same downforce of spool and stroke, extrudes tails off, the working oil pressure in jack cylinder then increases according to hydraulic principle; The operation that hoists of the object of accomplishing high tonnage then changes pump at a slow speed into by quick pump, can carry the lift operations that rises of high capacity; Protected each parts of oil pump effectively, more safe and reliable.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1 is the structural representation of the said jack of the utility model with oil pump oil suction state;
Fig. 2 is that the said jack of the utility model is with the structural representation of oil pump load less than builder's tonnage limit state;
Fig. 3 is that the said jack of the utility model is with the structural representation of oil pump load greater than builder's tonnage limit state;
Fig. 4 is the part sectional view of the said spool of the utility model.
The cooresponding label of component names is following among the figure:
1, valve body; 2, spool; 3, valve body screw; 4, stage clip; 5, the first steel ball valve; 6, the second steel ball valve; 7, blind hole; 8, first through hole; 9, second through hole; 10, third through-hole; 11, groove; 12, seal ring; 13, seal groove; 14, O type circle.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to detail:
As the embodiment of the said jack of the utility model,, comprise valve body 1, spool 2, valve body screw 3, stage clip 4, the first steel ball valve 5 and the second steel ball valve 6 like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4 with oil pump; Said spool 2 one ends are located at said valve body 1 inside, and the other end passes said valve body 1, and said spool 2 lower ends are provided with the blind hole 7 and first through hole 8; The said first steel ball valve 5 is located in said first through hole 8; Said stage clip 4 is located in the said blind hole 7, and said valve body screw 3 is fixed in said blind hole 7 bottoms, and said valve body screw 3 is provided with second through hole 9; The said second steel ball valve 6 is located between said stage clip 4 and the valve body screw 3; And being pressed on said second through hole 9 upper ends, said spool 2 sidewalls are provided with third through-hole 10, and connect with said blind hole 7.
In the present embodiment, said spool 2 lower outside walls are provided with a circle groove 11, are provided with seal ring 12 in the said groove 11.
In the present embodiment, said valve body 1 upper end madial wall is provided with two circle seal grooves 13, is provided with O type circle 14 in the said seal groove 13.

Claims (3)

1. a jack is used oil pump, it is characterized in that comprising valve body, spool, valve body screw, stage clip, the first steel ball valve and the second steel ball valve, and said spool one end is located at said valve inner; The other end passes said valve body, and said spool lower end is provided with the blind hole and first through hole, and the said first steel ball valve is located in said first through hole; Said stage clip is located in the said blind hole, and said valve body screw is fixed in said blind hole bottom, and said valve body screw is provided with second through hole; The said second steel ball valve is located between said stage clip and the valve body screw; And being pressed on said second through hole upper end, said spool sidewall is provided with third through-hole, and connects with said blind hole.
2. jack as claimed in claim 1 is used oil pump, it is characterized in that said spool lower outside wall is provided with a circle groove, is provided with seal ring in the said groove.
3. jack as claimed in claim 2 is used oil pump, it is characterized in that said valve body upper end madial wall is provided with two circle seal grooves, is provided with O type circle in the said seal groove.
CN2012202301264U 2012-05-22 2012-05-22 Oil pump for jack Expired - Fee Related CN202558549U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202301264U CN202558549U (en) 2012-05-22 2012-05-22 Oil pump for jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202301264U CN202558549U (en) 2012-05-22 2012-05-22 Oil pump for jack

Publications (1)

Publication Number Publication Date
CN202558549U true CN202558549U (en) 2012-11-28

Family

ID=47208230

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012202301264U Expired - Fee Related CN202558549U (en) 2012-05-22 2012-05-22 Oil pump for jack

Country Status (1)

Country Link
CN (1) CN202558549U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106348198A (en) * 2016-08-29 2017-01-25 凯迈(洛阳)测控有限公司 Jack and plunger pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106348198A (en) * 2016-08-29 2017-01-25 凯迈(洛阳)测控有限公司 Jack and plunger pump

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121128

Termination date: 20140522