CN203269459U - Hydraulic jack with stable base - Google Patents

Hydraulic jack with stable base Download PDF

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Publication number
CN203269459U
CN203269459U CN 201320328610 CN201320328610U CN203269459U CN 203269459 U CN203269459 U CN 203269459U CN 201320328610 CN201320328610 CN 201320328610 CN 201320328610 U CN201320328610 U CN 201320328610U CN 203269459 U CN203269459 U CN 203269459U
Authority
CN
China
Prior art keywords
oil pipe
base
oil
hydraulic jack
jack
Prior art date
Application number
CN 201320328610
Other languages
Chinese (zh)
Inventor
徐金晶
李玲俊
陈亚辉
方剑
Original Assignee
浙江天晟建材集团有限公司
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 浙江天晟建材集团有限公司 filed Critical 浙江天晟建材集团有限公司
Priority to CN 201320328610 priority Critical patent/CN203269459U/en
Application granted granted Critical
Publication of CN203269459U publication Critical patent/CN203269459U/en

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Abstract

The utility model relates to a hydraulic jack with a stable base. The hydraulic jack comprises a base, wherein the base is provided with a hydraulic cylinder, oil storage cylinders, a first oil pipe, a second oil pipe, a pump body and an oil returning device, wherein the pump body is internally provided with a small piston pump; the pump body and the hydraulic cylinder are communicated through the first oil pipe; the pump body and the hydraulic cylinder are communicated through the second oil pipe; the oil returning device is arranged among the hydraulic cylinder and the oil storage cylinders; the hydraulic cylinder is internally provided with a large piston pump and the top of the large piston pump is connected with a top cover; the base is fixedly provided with a handle and one end of the handle is hinged with the small piston pump. The hydraulic jack disclosed by the utility model can overcome the defect of causing potential safety hazard by the fact that the height of the hydraulic jack is high.

Description

The steady hydraulic jack of a kind of base

Technical field

The utility model relates to a kind of jack, especially a kind of hydraulic jack.

Background technology

jack is lifted the instrument of heavy thing as a kind of tradition top, be widely used in the operations such as equipment installation, top lifting, dismounting of the multiple industries such as machine manufacture, vehicle maintenance and repair, electric power, building, mine, railroad bridge, jack needs to keep the quite a long time after with weight jack-up, and common hydraulic jack with weight jack-up after, leakage due to hydraulic oil, jack can not carry out long pressurize, can not will keep the quite a long time after weight jack-up, so jack need to be locked, one nut is installed on the push rod of jack locks, to keep the height of jack stand, but, the mode of this locking jack, the decline of jack resets more difficult, especially large-tonnage jack, the friction force of piston and oil cylinder is very large, usually need later on to spend the tremendous effort at Practical Completion, jack could be taken out, so need again to utilize hydraulic way to reset.

existing mechanical locking hydraulic jack, formed by hydraulic ram and nut, oil cylinder comprises cylinder sleeve and piston, piston and push rod are an integral body, diameter of piston matches with the cylinder sleeve internal diameter, piston and cylinder sleeve seal by seal ring, piston base and cylinder sleeve form the jacking oil pocket, having jacking hydraulic oil on the cylinder sleeve of jacking oil pocket surrounding imports and exports, when hydraulic oil adds the jacking oil pocket, promote the push rod jack-up that makes progress, push rod top surrounding outside face has screw thread, nut is spun on push rod, push rod is fixed, the cylinder sleeve middle part seals by seal ring with push rod, make cylinder sleeve, form the oil pocket that resets between piston and push rod, having the hydraulic oil of resetting on the cylinder sleeve of oil pocket surrounding that resets imports and exports, when hydraulic oil adds the oil pocket that resets, pushing piston is downward, make push rod be resetted, because cylinder sleeve and push rod need sealing, so there is no screw thread on the push rod in the oil pocket that resets, the height of push rod jacking only has at most half of push rod height, so want the jack oneself height of jacking same distance higher, be not suitable for the smaller occasion in gap.

The utility model content

In view of above-mentioned condition, be necessary to provide a kind of base pulsation-free hydraulic jack, in order to overcome the higher defective of oneself height.

For solving the problems of the technologies described above, a kind of base pulsation-free hydraulic jack is provided, comprise base, this base is provided with hydraulic actuating cylinder, oil storage cylinder, the first oil pipe, the second oil pipe, the pump housing and oil return apparatus, be provided with donkey in this pump housing, be communicated with by this first oil pipe between this pump housing and this hydraulic actuating cylinder, be communicated with by this second oil pipe between this pump housing and this hydraulic actuating cylinder, this oil return apparatus is located between this hydraulic actuating cylinder and this oil storage cylinder; Be provided with large piston pump in this hydraulic actuating cylinder, this large piston pump top is connected with top cover; Be fixed with handle on this base, this handle one end and this donkey are hinged.

This oil return apparatus includes the 3rd oil pipe and tapping valve, and this tapping valve is located in the 3rd oil pipe, being communicated with between this this hydraulic actuating cylinder of dispersing valve gate control and this oil storage cylinder.

This tapping valve is provided with the opening rotary switch device, and this opening rotary switch device can be controlled the size of this dispersing valve door opening.

This first oil pipe and this pump housing junction are provided with the first check valve.

This pump housing bottom is provided with concave surface, and this first check valve is located in this concave surface.

This second oil pipe and this hydraulic actuating cylinder junction are provided with the second check valve.

This first check valve comprises valve seat and steel ball, and this valve seat is hollow structure, and this hollow structure one end is connected with the first oil pipe, and greater than the diameter of the first oil pipe, the diameter of this steel ball is between the diameter of this hollow structure and the first oil pipe.

This second check valve comprises valve seat and steel ball, and this valve seat is hollow structure, and this hollow structure one end is connected with the second oil pipe, and greater than the diameter of the second oil pipe, the diameter of this steel ball is between the diameter of this hollow structure and the second oil pipe.

The utility model base pulsation-free hydraulic jack, in the process of jack-up weight, it is motionless that piston rod keeps, and corresponding the variation keeps top cover and weight full face contact to top cover with the variation of weight position.Therefore, can protect the contact surface of weight and jack to avoid damaging.This hydraulic jack is provided with check valve, can be used for vertical direction and pass weight, and wherein base area arranges greatly, and is more steady than other jack, overcome the higher defective of oneself height, can be used for multiple occasion.

Description of drawings

Fig. 1 is the cross-sectional view of the utility model base pulsation-free hydraulic jack.

Wherein: 10, base; 12, concave surface; 20, handle; 30, the pump housing; 32, donkey; 34, the first check valve; 40, oil storage cylinder; 50, hydraulic actuating cylinder; 52, large piston pump; 54, the second check valve; 62, the first oil pipe; 64, the second oil pipe; 70, oil return apparatus; 71, the 3rd oil pipe; 72, dispersing valve door opening; 74, opening rotary switch device; 80, top cover.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model base pulsation-free hydraulic jack is described in further detail.

See also Fig. 1, a kind of base pulsation-free hydraulic jack of the utility model embodiment, comprise base 10, this base 10 is provided with hydraulic actuating cylinder 50, oil storage cylinder 40, the first oil pipe 62, the second oil pipe 64, the pump housing 30 and oil return apparatus 70, be provided with donkey 32 in this pump housing 30, be communicated with by this first oil pipe 62 between this pump housing 30 and this hydraulic actuating cylinder 50, be communicated with by this second oil pipe 64 between this pump housing 30 and this hydraulic actuating cylinder 50, this oil return apparatus 70 is located between this hydraulic actuating cylinder 50 and this oil storage cylinder 40; Be provided with large piston pump 52 in this hydraulic actuating cylinder 50, this large piston pump 52 tops are connected with top cover 80; Be fixed with handle 20 on this base 10, these handle 20 1 ends and this donkey 32 are hinged,

This oil return apparatus 70 includes the 3rd oil pipe 71 and tapping valve, and this tapping valve is located in the 3rd oil pipe 71, being communicated with between this hydraulic actuating cylinder 50 of this dispersing valve gate control and this oil storage cylinder 40.

This tapping valve is provided with opening rotary switch device 74, and this opening rotary switch device 74 can be controlled the size of this dispersing valve door opening 72.

This first oil pipe 62 is provided with the first check valve 34 with this pump housing 30 junctions; This pump housing 30 bottoms are provided with concave surface 12, and this first check valve 34 is located in this concave surface 12; This second oil pipe 64 is provided with the second check valve 54 with this hydraulic actuating cylinder 50 junctions.

This first check valve 34 comprises valve seat and steel ball, and this valve seat is hollow structure, and this hollow structure one end is connected with the first oil pipe 62, and greater than the diameter of the first oil pipe 62, the diameter of this steel ball is between the diameter of this hollow structure and the first oil pipe; This second check valve 54 comprises valve seat and steel ball, and this valve seat is hollow structure, and this hollow structure one end is connected with the second oil pipe, and greater than the diameter of the second oil pipe 64, the diameter of this steel ball is between the diameter of this hollow structure and the second oil pipe 64.

Thereby during work by on move handle 20 and make donkey 32 upward movements form parital vacuums, fluid is inhaled into the pump housing 30 from oil storage cylinder 40 by the first check valve 34, then pressing down handle 20 presses down donkey 32, the hydraulic oil of the pump housing 30 is pressed in hydraulic actuating cylinder 50 by the second check valve 54, thereby promote to move on large piston pump 52 perseveration jack-up weight.The finish using opening rotary switch device 74 of retrotorsion oil return apparatus 70 is communicated with hydraulic actuating cylinder 50 and oil storage cylinder 40, and fluid directly flows back to oil storage cylinder 40, and large piston pump 52 falls, and large piston pump 52 fallings speed depend on the size of dispersing valve door opening.

Above-mentioned base pulsation-free hydraulic jack, in the process of jack-up weight, large piston pump 52 keeps motionless, and corresponding the variation keeps top cover 80 and weight full face contact to top cover 80 with the variation of weight position.Therefore, can protect the contact surface of weight and jack to avoid damaging.This hydraulic jack is provided with check valve, can be used for vertical direction and pass weight, and wherein base area arranges greatly, and is more steady than other jack, overcome the higher defective of oneself height, can be used for multiple occasion.

the above, it is only preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims (8)

1. steady hydraulic jack of base, it is characterized in that: comprise base, this base is provided with hydraulic actuating cylinder, oil storage cylinder, the first oil pipe, the second oil pipe, the pump housing and oil return apparatus, be provided with donkey in this pump housing, be communicated with by this first oil pipe between this pump housing and this hydraulic actuating cylinder, be communicated with by this second oil pipe between this pump housing and this hydraulic actuating cylinder, this oil return apparatus is located between this hydraulic actuating cylinder and this oil storage cylinder; Be provided with large piston pump in this hydraulic actuating cylinder, this large piston pump top is connected with top cover; Be fixed with handle on this base, this handle one end and this donkey are hinged.
2. the steady hydraulic jack of base as claimed in claim 1, it is characterized in that: this oil return apparatus includes the 3rd oil pipe and tapping valve, and this tapping valve is located in the 3rd oil pipe, being communicated with between this this hydraulic actuating cylinder of dispersing valve gate control and this oil storage cylinder.
3. the steady hydraulic jack of base as claimed in claim 2, it is characterized in that: this tapping valve is provided with the opening rotary switch device, and this opening rotary switch device can be controlled the size of this dispersing valve door opening.
4. the steady hydraulic jack of base as claimed in claim 1 is characterized in that: this first oil pipe and this pump housing junction are provided with the first check valve.
5. the steady hydraulic jack of base as claimed in claim 4 is characterized in that: this pump housing bottom is provided with concave surface, and this first check valve is located in this concave surface.
6. the steady hydraulic jack of base as claimed in claim 1 is characterized in that: this second oil pipe and this hydraulic actuating cylinder junction are provided with the second check valve.
7. the steady hydraulic jack of base as claimed in claim 4, it is characterized in that: this first check valve comprises valve seat and steel ball, this valve seat is hollow structure, this hollow structure one end is connected with the first oil pipe, and greater than the diameter of the first oil pipe, the diameter of this steel ball is between the diameter of this hollow structure and the first oil pipe.
8. the steady hydraulic jack of base as claimed in claim 6, it is characterized in that: this second check valve comprises valve seat and steel ball, this valve seat is hollow structure, this hollow structure one end is connected with the second oil pipe, and greater than the diameter of the second oil pipe, the diameter of this steel ball is between the diameter of this hollow structure and the second oil pipe.
CN 201320328610 2013-06-06 2013-06-06 Hydraulic jack with stable base CN203269459U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320328610 CN203269459U (en) 2013-06-06 2013-06-06 Hydraulic jack with stable base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320328610 CN203269459U (en) 2013-06-06 2013-06-06 Hydraulic jack with stable base

Publications (1)

Publication Number Publication Date
CN203269459U true CN203269459U (en) 2013-11-06

Family

ID=49499911

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320328610 CN203269459U (en) 2013-06-06 2013-06-06 Hydraulic jack with stable base

Country Status (1)

Country Link
CN (1) CN203269459U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103738877A (en) * 2013-12-20 2014-04-23 广西科技大学 Hydraulic jack
CN104235000A (en) * 2013-12-13 2014-12-24 安徽三雕起重机械有限公司 Hydraulic lifting vehicle oil pump
CN104326415A (en) * 2014-10-20 2015-02-04 湖南大麓管道工程有限公司 Opening device
CN106109172A (en) * 2016-06-27 2016-11-16 张七龙 Fluid pressure type upper limb two-wheel rotator
CN107639592A (en) * 2017-08-31 2018-01-30 安徽信息工程学院 Spring clamping apparatus
CN107700611A (en) * 2017-08-31 2018-02-16 安徽信息工程学院 Pipe-dredging mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235000A (en) * 2013-12-13 2014-12-24 安徽三雕起重机械有限公司 Hydraulic lifting vehicle oil pump
CN103738877A (en) * 2013-12-20 2014-04-23 广西科技大学 Hydraulic jack
CN104326415A (en) * 2014-10-20 2015-02-04 湖南大麓管道工程有限公司 Opening device
CN106109172A (en) * 2016-06-27 2016-11-16 张七龙 Fluid pressure type upper limb two-wheel rotator
CN107639592A (en) * 2017-08-31 2018-01-30 安徽信息工程学院 Spring clamping apparatus
CN107700611A (en) * 2017-08-31 2018-02-16 安徽信息工程学院 Pipe-dredging mechanism

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 321032 Tang Tong Village, Tong Ya Industrial Park, Jindong District, Zhejiang, Jinhua

Patentee after: ZHEJIANG TIANSHENG BUILDING MATERIALS CO., LTD.

Address before: 321032 Tang Tong Village, Tong Ya Industrial Park, Jindong District, Zhejiang, Jinhua

Patentee before: Zhejiang Tiansheng Building Materials Group Co., Ltd.