CN103288005A - Manual rapid portable extra-high-pressure hydraulic jack - Google Patents
Manual rapid portable extra-high-pressure hydraulic jack Download PDFInfo
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- CN103288005A CN103288005A CN2013102735559A CN201310273555A CN103288005A CN 103288005 A CN103288005 A CN 103288005A CN 2013102735559 A CN2013102735559 A CN 2013102735559A CN 201310273555 A CN201310273555 A CN 201310273555A CN 103288005 A CN103288005 A CN 103288005A
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- 239000012530 fluid Substances 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 23
- 239000002828 fuel tank Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Abstract
本发明涉及一种手动快速便携式超高压液压千斤顶，阶梯活塞式手动泵开有两大小不同的活塞孔，两活塞孔中间连有一小孔，两活塞孔中分别装有相应直径的活塞，两活塞通过同一活塞杆连为一体，活塞杆的顶端与压杆的中间铰链相接，压杆的另一端与机架相连；双速液压缸的缸筒与大柱塞配合，大柱塞内开有一阶梯孔，其中一小孔内装有一个小柱塞，小柱塞的下端与缸筒相连，在小柱塞的下半部分侧壁开有一小孔，在小孔内装有一单向阀。采用分体式结构和轻量化技术，采用阶梯活塞式手动泵、带充液阀的双速液压缸及其液控系统，可为多个液压缸提供液压油，具有体积小、重量轻、便于携带、推力大、支撑方便、预警及时且一个手动泵的特点。
The invention relates to a manual fast portable ultra-high pressure hydraulic jack. The stepped piston type manual pump has two piston holes of different sizes, and a small hole is connected between the two piston holes. Pistons with corresponding diameters are respectively installed in the two piston holes. Connected as a whole through the same piston rod, the top of the piston rod is connected to the middle hinge of the pressure rod, and the other end of the pressure rod is connected to the frame; the cylinder barrel of the double-speed hydraulic cylinder is matched with the large plunger, and there is a hole in the large plunger. Step hole, wherein a small plunger is housed in the small hole, the lower end of the small plunger is connected with the cylinder barrel, a small hole is arranged on the side wall of the lower part of the small plunger, and a one-way valve is housed in the small hole. Adopt split structure and lightweight technology, adopt stepped piston manual pump, two-speed hydraulic cylinder with filling valve and its hydraulic control system, which can provide hydraulic oil for multiple hydraulic cylinders, with small size, light weight, and easy to carry , large thrust, convenient support, timely warning and the characteristics of a manual pump.
Description
Technical field
[0001] the invention belongs to the engineering mechanical device technical field, relate to a kind of based on the manual quick portable ultrahigh-pressure hydraulic jack of stepped-piston type manual pump with the dual-speed hydraulic cylinder of band prefill valve.
Background technology
In fields such as earthquake relief work, fire-fighting and rescue, lifting passing, need to use the portable hydraulic jack to carry out the operation of lifting, passing, support weight; Underground mine, engineering construction need jack with weight jack-up or support, so that rescue or safety in production.But present portable hydraulic jack generally adopts hydraulic actuating cylinder, hydraulic valve and manual pump integral structure, and its shortcoming is: volume is big, at the narrow space place, and operation inconvenience; Heavy Weight carries inconvenience; Hydraulic system pressure is low, and bearing force is not enough; Unloaded identical with loading procedure piston rod moving velocity, driving efficiency is not high; Even only a few adopts hydraulic actuating cylinder and pump valve split-type structural, but because hydraulic system pressure is low, big, the Heavy Weight of hydraulic actuating cylinder volume under the equal load, hydraulic actuating cylinder monomer weight be all at +75 kg, and cause carrying inconvenience.The hydraulic jack that present mine, engineering construction are used all is furnished with special hydraulic efficiency pressure system, and volume is big, Heavy Weight, carries inconvenience.All these will cause reducing rescue and relief work efficient, safety production efficiency, cause unnecessary life and property loss.Therefore, the jack of a kind of manually quick big load of portable multi-function superhigh pressure of development is very necessary.
At present, portable hydraulic jack commonly used adopts hydraulic actuating cylinder, hydraulic valve and manual pump integral structure mostly, and as shown in Figure 1, this integral structure makes entire equipment weight excessive, carries inconvenience.Manual pump adopts single piston structure mostly, shown in right half part among Fig. 1; This manual pump is unloaded identical with loading procedure piston rod moving velocity, and driving efficiency is not high.The manual pump that has adopts staged piston, dual-piston structure or double acting twin-stage plunger pump.The speed of these pumps all has two-stage, F.F. when namely non-loaded, slow-motion during load.
The hydraulic actuating cylinder executive item partly is generally single-action plunger piston cylinder, double acting hydraulic cylinder, and speed has only one-level; Only a few adopts the dual-speed hydraulic cylinder of band prefill valve, as shown in Figure 2, external aspect, what Japan reason ground that the hand oil pump of smart machine Co., Ltd. development adopts is the stepped-piston type manual pump, and carrying out hydraulic actuating cylinder is single-action hydraulic cylinder, adopts manual pump and actuating unit integral structure, top pressure 70MPa, the speed two-stage, net weight 56Kg, volume is very little.There is not a kind of hydraulic pressure fastening that double speed manual pump and dual-speed hydraulic cylinder are combined at present.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of employing split-type structural and lightweight technology, adopt dual-speed hydraulic cylinder and the hydraulic control system thereof of stepped-piston type manual pump, band prefill valve, can be a plurality of hydraulic actuating cylinders hydraulic oil be provided, have volume little, in light weight, be easy to carry, thrust is big, it is convenient to support, early warning in time and the manual quick portable ultrahigh-pressure hydraulic jack of manual pump characteristics.
The present invention solves the technical method that its technical matters adopts: a kind of manually quick portable ultrahigh-pressure hydraulic jack, it has the dual-speed hydraulic cylinder two big parts of stepped-piston type manual pump and band prefill valve, the stepped-piston type manual pump has two piston holes that vary in size, be connected with an aperture in the middle of the two-piston hole, the piston of respective diameters is housed respectively in the two-piston hole, two-piston is connected as a single entity by same piston rod, the top of piston rod and the middle hinge of depression bar are joined, and the other end of depression bar links to each other with frame; The cylinder barrel of dual-speed hydraulic cylinder cooperates with big plunger, have a stepped hole in the big plunger, a small plunger is housed in the aperture in stepped hole, the lower end of small plunger links to each other with cylinder barrel, the latter half sidewall at small plunger has an aperture, and a check valve is housed in aperture.
The invention has the beneficial effects as follows: adopt split-type structural, manual pump and two major parts of hydraulic actuating cylinder executive item are separated, adopt the lightweight technology that the monomer weight of manual pump and two parts of hydraulic actuating cylinder is reduced to below 25 kilograms, be easy to carry; It adopts dual-speed hydraulic cylinder and the hydraulic control system thereof of stepped-piston type manual pump, band prefill valve, realize piston rod quick travel when unloaded and piston rod mobile, the highest 63MPa of system pressure, maximum thrust 12T at a slow speed during load, higher about 20 times than the lifting efficient of traditional jack; Its assembly type top board is connected with the piston rod spherical pair, the convenient support; Bearing height is adjustable; Early warning is carried out in hydraulic actuating cylinder safety locking, off-load during the improper decline of load; A manual pump can be a plurality of hydraulic actuating cylinders (jack) provides hydraulic oil.
Description of drawings:
Fig. 1 is traditional hydraulic jack schematic diagram.
Among Fig. 1: 1-plunger, 2-plunger case, 3-shutoff valve, 4-fuel tank, 5-piston, 6-piston cylinder, 7-check valve one, 8-check valve two.
Fig. 2 is existing efficient hydraulic jack schematic diagram.
Among Fig. 2: the 1-fuel tank, the 2-shutoff valve, 3,4,11, the 12-check valve, 5-vat cylinder barrel, the big cylinder plug of 6-, the little cylinder plug of 7-, 8-depression bar, 9-piston, 10-be along plug cylinder, A, B-working oil chamber.
Fig. 3 is structural representation of the present invention.
Among Fig. 3: 1-working oil chamber A, 2-small plunger, the big plunger of 3-, 4-working oil chamber B, the big plunger case of 6-, the 7-shutoff valve, 10-fuel tank, 11-high-pressure overflow valve, 5,8,12,13,15, the 16-check valve, 9, the 14-oil filter, the 17-low pressure relief valve, 18-valve piston, the big piston of 19-, 20-depression bar.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples:
Referring to Fig. 3, a kind of manually quick portable ultrahigh-pressure hydraulic jack, it is a kind of a kind of manual quick portable superhigh pressure jack of dual-speed hydraulic cylinder based on stepped-piston type manual pump and band prefill valve that adopts, it has the dual-speed hydraulic cylinder two big parts of stepped-piston type manual pump and band prefill valve, the stepped-piston type manual pump has two piston holes that vary in size, be connected with an aperture in the middle of the two-piston hole, the piston of respective diameters is housed respectively in the two-piston hole, two-piston is connected as a single entity by same piston rod, the middle hinge of the top of piston rod and depression bar 20 is joined, and the other end of depression bar 20 links to each other with frame; The cylinder barrel of dual-speed hydraulic cylinder cooperates with big plunger 3, have a stepped hole in the big plunger 3, a small plunger 2 is housed in the aperture in stepped hole, the lower end of small plunger 2 links to each other with cylinder barrel, the latter half sidewall at small plunger 2 has an aperture, and a check valve 5 is housed in aperture.
Its principle of work as shown in Figure 3.Its principle of work is: high-pressure overflow valve 11 settling pressure 63Mpa, low pressure relief valve 17 settling pressure 1Mpa; When idle travel is non-loaded, lift depression bar 20, driving valve piston 18 moves up with big piston 19, working oil chamber volume under the two-piston enlarges, form vacuum, push check valve 13 and check valve 15 at barometric pressure effect lower fuel tank 10 inner fluids open through oil filter 14 and flow into working oil chamber under valve piston 18 and the big piston 19 respectively; When depressing depression bar 20, check valve 13 and check valve 15 are closed, pressure oil in the working oil chamber under valve piston 18 and the big piston 19 flows into the centre hole of small plunger 2 respectively together through check valve 12 and check valve 16, flow into the working oil chamber A1 of small plunger 2 tops at last, the sectional area of the big piston 19 of cause and the sectional area of working oil chamber A1 are similar, so big plunger 3 fast rise; Simultaneously, the bottom of big plunger 3 and the actual displacement of working oil chamber B4 enlarge, and form vacuum, and fuel tank 10 inner fluids are pushed the cavity that check valve 8 flows under the big plunger 3 open through oil filter 9.
Continue to press and lift depression bar 20, plunger continues to rise, and when the plunger rising contacted load, the oil pressure of working oil chamber A1 and working oil chamber B4 raise; When this oil pressure was elevated to 1Mpa, at this moment low pressure relief valve 17 overflows pressed when lifting depression bar 20, and the fluid that sucks from fuel tank 10 finally overflows through low pressure relief valve 17 through oil filter 14 and check valve 15, no longer flows into plunger case; At this moment have valve piston 18 work only and work, from fuel tank 10 suck after the fluid pressurization of oil filter 14 and check valve 13, push check valve 12 open, finally flow into plunger case; Because the sectional area of the relative valve piston 18 of plunger sectional area of plunger case is a lot of greatly, so the pressure oil that depression bar 20 extrudes reaches as high as 63Mpa.Jack plunger fast rise when so just having realized unloaded idle travel, and the jack plunger rises at a slow speed during load, and pressure is very big, load can be very big.
When needs stop to rise, stop to lift moulded rod 20 immediately, the oil liquid pressure in the plunger case is closed check valve 8,12,16 voluntarily, and plunger self-locking immediately is motionless.If want plunger to return constantly, open shutoff valve 7, under the gravity effect, the fluid in the plunger case flows back to fuel tank 10, plunger return.
The present invention adopts split-type structural, and manual pump and two major parts of hydraulic actuating cylinder executive item are separated, and adopts the lightweight technology that the monomer weight of manual pump and two parts of hydraulic actuating cylinder is reduced to below 25 kilograms, is easy to carry; It adopts dual-speed hydraulic cylinder and the hydraulic control system thereof of stepped-piston type manual pump, band prefill valve, realize piston rod quick travel when unloaded and piston rod mobile, the highest 63MPa of system pressure, maximum thrust 12T at a slow speed during load, higher about 20 times than the lifting efficient of traditional jack; Its assembly type top board is connected with the piston rod bulb, the convenient support; Bearing height is adjustable; Early warning is carried out in hydraulic actuating cylinder safety locking, off-load during the improper decline of load; A manual pump can be a plurality of jacks provides oil mass.
Design calculation
2.1 the jack maximum load is calculated
According to lever principle, have
In the formula,
l 0 -depression bar length overall,
l 1-depression bar and piston rod hinge-point be to the distance of depression bar and support hinge-point,
F 0The power of-depression bar tail end manual depression,
F 1The power of depressing that-manual pump piston rod is subjected to,
According to pascal's principle, have
（2）
In the formula,
d 2-valve piston diameter
D 2-big diameter of plunger
pHydraulic pressure in the-epitrochoidal chamber
2.2 the plunger ascending velocity is calculated
According to mass conservation law,
When ignoring the compressibility of liquid,
, then
Because manual pump is depressed liquid volume
, the bulged-in liquid volume of pillar plug cylinder
, then
In the formula,
d 1-big diameter of piston,
d 0-manual pump diameter of piston rod,
D 1-small plunger diameter,
h-large and small piston miles of relative movement, namely the depression bar single is depressed distance,
H 1-small plunger miles of relative movement,
H 2-big plunger miles of relative movement.
Plunger case climb and manual pump piston are depressed distance ratio
kFor
（6）。
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102735559A CN103288005A (en) | 2013-05-02 | 2013-07-02 | Manual rapid portable extra-high-pressure hydraulic jack |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320231865 | 2013-05-02 | ||
| CN201320231865.X | 2013-05-02 | ||
| CN2013102735559A CN103288005A (en) | 2013-05-02 | 2013-07-02 | Manual rapid portable extra-high-pressure hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103288005A true CN103288005A (en) | 2013-09-11 |
Family
ID=49089630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102735559A Pending CN103288005A (en) | 2013-05-02 | 2013-07-02 | Manual rapid portable extra-high-pressure hydraulic jack |
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| Country | Link |
|---|---|
| CN (1) | CN103288005A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612713A (en) * | 2018-05-23 | 2018-10-02 | 马鞍山纽盟知识产权管理服务有限公司 | a kind of hydraulic device |
| CN109827826A (en) * | 2019-03-28 | 2019-05-31 | 天津出入境检验检疫局化矿金属材料检测中心 | Manual and rapid preparation of specimens for tensile experiments of sheet metal below 3mm |
| CN115681228A (en) * | 2021-08-05 | 2023-02-03 | 襄阳博亚精工装备股份有限公司 | Hydraulic system for equivalently supplying oil by adopting double-plunger manual pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB824634A (en) * | 1957-07-18 | 1959-12-02 | Fabrication Des Cintreuses Min | Improvements in or relating to hydraulic jacks |
| CN2464705Y (en) * | 2001-02-15 | 2001-12-12 | 大大机械厂(杭州)有限公司 | Double-cylinder jack |
| CN2611343Y (en) * | 2002-08-08 | 2004-04-14 | 江苏通润机电集团有限公司 | Dual speed hydraulic jack oil pump |
| CN2632055Y (en) * | 2003-05-13 | 2004-08-11 | 范群 | Multistage speed adjusting jack |
-
2013
- 2013-07-02 CN CN2013102735559A patent/CN103288005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB824634A (en) * | 1957-07-18 | 1959-12-02 | Fabrication Des Cintreuses Min | Improvements in or relating to hydraulic jacks |
| CN2464705Y (en) * | 2001-02-15 | 2001-12-12 | 大大机械厂(杭州)有限公司 | Double-cylinder jack |
| CN2611343Y (en) * | 2002-08-08 | 2004-04-14 | 江苏通润机电集团有限公司 | Dual speed hydraulic jack oil pump |
| CN2632055Y (en) * | 2003-05-13 | 2004-08-11 | 范群 | Multistage speed adjusting jack |
Non-Patent Citations (1)
| Title |
|---|
| 周福成: "新型遥控液压千斤顶的设计", 《液压与气动》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612713A (en) * | 2018-05-23 | 2018-10-02 | 马鞍山纽盟知识产权管理服务有限公司 | a kind of hydraulic device |
| CN109827826A (en) * | 2019-03-28 | 2019-05-31 | 天津出入境检验检疫局化矿金属材料检测中心 | Manual and rapid preparation of specimens for tensile experiments of sheet metal below 3mm |
| CN115681228A (en) * | 2021-08-05 | 2023-02-03 | 襄阳博亚精工装备股份有限公司 | Hydraulic system for equivalently supplying oil by adopting double-plunger manual pump |
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Application publication date: 20130911 |