CN102581823A - Portable hydraulic cutting and expanding pliers - Google Patents
Portable hydraulic cutting and expanding pliers Download PDFInfo
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- CN102581823A CN102581823A CN2012100666259A CN201210066625A CN102581823A CN 102581823 A CN102581823 A CN 102581823A CN 2012100666259 A CN2012100666259 A CN 2012100666259A CN 201210066625 A CN201210066625 A CN 201210066625A CN 102581823 A CN102581823 A CN 102581823A
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Abstract
The invention relates to portable hydraulic cutting and expanding pliers which consist of a battery, a motor, a transmission, a hydraulic device (a complex of a plunger pump, a hydraulic operating valve and an oil cylinder), cutting and expanding pliers and the like. On the outdoor anti-disaster or rush-repair site without an AC (alternate current) power supply, the portable hydraulic cutting and expanding pliers can replace heavy and labor-waste manual cutting and expanding pliers to easily cut off various barriers. Moreover, the portable hydraulic cutting and expanding pliers have compact structure and are convenient to carry and are an important anti-disaster salvage tool. However, currently, the like tool has expensive price in the market and is difficult to popularize and apply. The hydraulic device is the most key in the portable hydraulic cutting and expanding pliers and is also a part with the highest cost. According to the invention, the oil cylinder and the hydraulic operating valve in the hydraulic device are improved and the hydraulic device with low price and excellent quality is developed, so that the quality of the hydraulic cutting and expanding pliers is improved and the cost is reduced.
Description
Technical field
The present invention relates to a kind of hydraulic pressure and cut and expand pincers, a kind ofly combat a natural disaster in the field that does not have AC power to rescue or during repairing, be used to cut off or the portable hydraulic of expanding barrier is cut and expanded pincers.
Background technology
Rescue the scene at earthquake, fire etc., be rid, the manpower that often needs cut the heavy effort of expansion pincers replacement with mechanokinetic is cut the expansion pincers.Because the disaster scene does not have AC power usually, must use the portable hydraulic that battery is arranged and cut the expansion pincers.The hydraulic pressure that occurs is in the market cut and expanded pincers, and hydraulic unit costs an arm and a leg, and complete machine is brought a high price, and is difficult universal, needs a kind of hydraulic means of high quality and at a reasonable price of development, portable hydraulic cut expanded the price reduction that clamps.
Portable hydraulic is cut the hydraulic means that expands pincers and is formed by plunger displacement pump, hydraulic control valve and oil cylinder set; Structure is very compact; Common valve body and needle with axial switchover control valve shown in Figure 6; Change pressure oil and flow to moving needle, the higher undercut groove of dimensional accuracy is arranged in the valve body, this on compact conformation, complex-shaped cylinder body difficult processing to guarantee precision.The structure of present being seen center oil-feed hydraulic jack is seen Fig. 7, and is little for guaranteeing cylinder body and piston space leakage, requires cylinder inner bore and center circle cylinder very high concentricity and fineness, and difficulty of processing is very high, and the processing request of piston and piston rod is also higher.These factors make the manufacturing cost of hydraulic means very high, must improve above-mentioned hydraulic part structure.
Summary of the invention
The technical problem that the present invention will solve is: develop a kind of portable hydraulic simple in structure, of high quality and at a reasonable price and cut the hydraulic means that expands pincers, need the oil cylinder in the hydraulic means and control valve structure and process are improved for this reason.
Technical solution of the present invention is: a kind of portable hydraulic is cut and is expanded pincers, comprises battery, motor, gearbox and hydraulic means.Said hydraulic means is made up of oil cylinder, hydraulically operated valve and plunger displacement pump.Said oil cylinder is made up of cylinder body, piston and piston rod, and said hydraulically operated valve is made up of needle and switching-over knob.The top of said cylinder body is provided with valve opening, and the needle of this valve opening and hydraulically operated valve is slidingly matched, and with the epicoele UNICOM of the oil pocket of cylinder body.
The sidewall of said cylinder body is provided with asphalt channel, and the last fuel feed hole of asphalt channel is communicated with the valve opening at cylinder body top, and is communicated with the epicoele of oil pocket through the epicoele oilhole; The lower end of asphalt channel is communicated with the cavity of resorption oilhole of oil pocket.
Do not sink on the valve opening of said cylinder body and cut oil groove, right oil groove and left oil groove are arranged on needle.When the switching-over knob was in " expansion " position, right oil groove made the fuel feed hole of valve opening communicate with last fuel feed hole on the needle, communicates with the cavity of resorption oilhole through asphalt channel, and at this moment, left oil groove makes the spill port of valve opening communicate with the epicoele oilhole.The pressure oil of plunger displacement pump injection at this moment gets into the oil cylinder lower oil cavitie from valve opening right oil groove on needle, and upper oil cavitie oil flows back to plunger displacement pump from left oil groove through spill port, and it is inside that pressure oil promotes the words plug, and the piston rod pulling is cut and expanded pincers expansion object.When the switching-over knob was in " shearing " position, left oil groove made fuel feed hole communicate with the epicoele oilhole on the needle, and at this moment, right oil groove makes spill port communicate with last fuel feed hole, communicates with the cavity of resorption oilhole through asphalt channel.The pressure oil of plunger displacement pump injection at this moment gets into the oil cylinder upper oil cavitie from valve opening left oil groove on needle, and lower oil cavitie oil flows back to plunger displacement pump from right oil groove through spill port, and it is outside that pressure oil promotes to talk about plug, and the piston rod pulling is cut to expand to clamp and sheared object.
Among the present invention, lower oil cavitie turnover oilhole is formed by boring on the cylinder side wall in the cylinder body, and is communicated with valve opening through asphalt channel; Make the cancellation of cylinder body central cylindrical body; Cylinder body and piston, piston rod construction are simplified, and reduce cylinder body and piston space seepage, minimizing cylinder body, piston and words stopper rod fine finishining man-hour.Said cylinder hydraulic is handled on the valve opening does not have the very high heavy oil groove that cuts of size of space required precision, and two oil grooves are arranged on needle, and the processing technology of cylinder body is simplified.The method that these make hydraulic device structure and work simplification has improved the quality of hydraulic means, avoids the oil cylinder leakage of oil; Save a lot of Precision Machining man-hour again; Reduce rejection number, significantly reduce the hydraulic means manufacturing cost, also just reduced this portable hydraulic and cut the price that expands pincers.
Description of drawings
Fig. 1: portable hydraulic is cut and is expanded the pincers outline drawing;
Fig. 2: hydraulic device structure figure;
Fig. 3: oil cylinder cutaway view;
Fig. 4: hydraulic control valve cutaway view (cut and expand the pincers expansion);
Fig. 5: hydraulic control valve cutaway view (cut and expand the pincers shearing);
Fig. 6: axial switchover control valve sketch map;
Fig. 7: the structure chart of center oil-feed hydraulic jack.
Specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description.
A kind of portable hydraulic of the present invention is cut and is expanded pincers, comprises battery, motor, gearbox and hydraulic means, sees Fig. 1.Said hydraulic means is that oil cylinder 1, hydraulically operated valve 2 and plunger displacement pump constitute, and sees Fig. 2.Said oil cylinder 1 is made up of cylinder body 11, piston 12 and piston rod 13, and said hydraulically operated valve 2 is made up of needle 21 and switching-over knob 22.As shown in Figure 3, the top of said cylinder body 11 is provided with valve opening 112, and this valve opening 112 is slidingly matched with the needle 21 of hydraulically operated valve 2, and with the epicoele UNICOM of the oil pocket 111 of cylinder body 11.
The sidewall of said cylinder body 11 is provided with asphalt channel 116, and the last fuel feed hole 115 of asphalt channel 116 is communicated with the valve opening 112 at cylinder body 11 tops, and is communicated with through the epicoele of epicoele oilhole 114 with oil pocket 111; The lower end of asphalt channel 116 is communicated with the cavity of resorption oilhole 113 of oil pocket 111.
Do not sink on the valve opening 112 of said cylinder body 11 and cut oil groove, right oil groove 211 and left oil groove 212 are arranged on needle 21.As shown in Figure 4; When switching-over knob 22 is in " expansion " position; Right oil groove 211 makes the fuel feed hole 117 in hole 112 communicate with last fuel feed hole 115 on the needle 21; Communicate with cavity of resorption oilhole 113 through asphalt channel 116, at this moment, left oil groove 212 makes the spill port 118 of valve opening 112 communicate with epicoele oilhole 114.The pressure oil of plunger displacement pump injection at this moment gets into oil cylinders 11 lower oil cavities from valve opening 112 right oil groove 211 on needle 21, and upper oil cavitie oil flows back to plunger displacement pump from left oil groove 212 through spill port 118, and it is inside that pressure oil promotes words plug 12, and piston rod 13 spurs to cut and expands pincers expansion object.As shown in Figure 5; When switching-over knob 22 was in " shearing " position, left oil groove 212 made fuel feed hole 117 communicate with epicoele oilhole 114 on the needle 21, at this moment; Right oil groove 211 makes spill port 119 communicate with last fuel feed hole 115, communicates with cavity of resorption oilhole 113 through asphalt channel 116.The pressure oil of plunger displacement pump injection at this moment gets into oil cylinders 11 upper oil cavities from valve opening 112 left oil groove 212 on needle 21, and lower oil cavitie oil flows back to plunger displacement pump from right oil groove 211 through spill port 119, and it is outside that pressure oil promotes to talk about plug 12, and piston rod 13 spurs to cut and expands pincers shearing object.
Said battery is a 18V reason battery; Said motor is 755 type dc motors; Said gearbox is that speed reducing ratio is 4 planet-gear speed reducer.
As shown in Figure 3; The cavity of resorption oilhole 113 of oil pocket 111 forms through cylinder body 11 sidewall internal drillings in the cylinder body 11 of said hydraulic means; And be communicated with valve opening 112 through asphalt channel 116, make the central cylindrical body that is provided with cylinder body shown in Figure 7 in the cylinder body 11, cylinder body 11, piston 12 and piston rod 13 designs simplifications; Reduce cylinder body 11 and 12 seepages of piston, reduce 13 fine finishining man-hours of cylinder body 11, piston 12 and piston rod.
Like Fig. 4, shown in 5, there is not the very high heavy oil groove that cuts of size of space required precision shown in Figure 6 on the valve opening 112 of said cylinder body 11, right oil groove 211 and left oil groove 212 are arranged on needle 21.This simplifies complex-shaped cylinder body processing technology, reduces Precision Machining man-hour, the rate of reducing the number of rejects and seconds.
Said portable hydraulic is cut the course of action that expands pincers: after power-supply battery is connected; The motor Kei is moving, and Plunger Pump Shaft is rotated, and pressure oil injects cylinder body 11; Knob 22 is in " expansion " position if commutate this moment; Pressure oil gets into oil pocket 111 cavity of resorption oilholes 113, inwardly draws piston 12, cuts and expands pincers expansion object.Switching-over knob 22 rotation directions " shearing " position, 114 oil-feeds of epicoele oilhole, to extrapolation, it is outside to promote piston rod 13 piston 12, makes to cut to expand pincers shearing object.
Portable hydraulic of the present invention is cut to expand to clamp and is not limited to the above embodiments, and those skilled in the art make the change of unsubstantiality, all fall into protection scope of the present invention.
Claims (2)
1. a portable hydraulic is cut and is expanded pincers, comprises battery, motor, gearbox and hydraulic means; Said hydraulic means is made up of oil cylinder (1), hydraulically operated valve (2) and plunger displacement pump; Said oil cylinder (1) is made up of cylinder body (11), piston (12) and piston rod (13); Said hydraulically operated valve (2) is made up of needle (21) and switching-over knob (22); The top of said cylinder body (11) is provided with valve opening (112), and the needle (21) of this valve opening (112) and hydraulically operated valve (2) is slidingly matched, and with the epicoele UNICOM of the oil pocket (111) of cylinder body (11); It is characterized in that:
The sidewall of said cylinder body 11 is provided with asphalt channel (116), and the last fuel feed hole (115) of asphalt channel (116) is communicated with the valve opening (112) at cylinder body (11) top, and is communicated with through the epicoele of epicoele oilhole (114) with oil pocket (111); The lower end of asphalt channel (116) is communicated with the cavity of resorption oilhole (113) of oil pocket (111);
The valve opening (112) of said cylinder body (11) is gone up not sink and is cut oil groove, and right oil groove (211) and left oil groove (212) are arranged on needle (21); When switching-over knob (22) is in " expansion " position; Needle (21) is gone up right oil groove (211) makes the fuel feed hole (117) of valve opening (112) communicate with last fuel feed hole (115); Communicate with cavity of resorption oilhole (113) through asphalt channel (116); At this moment, left oil groove (212) makes the spill port (118) of valve opening (112) communicate with epicoele oilhole (114); When switching-over knob (22) is in " shearing " position; Needle (21) is gone up left oil groove (212) makes fuel feed hole (117) communicate with epicoele oilhole (114); At this moment; Right oil groove (211) makes spill port (119) communicate with last fuel feed hole (115), communicates with cavity of resorption oilhole (113) through asphalt channel (116).
2. portable hydraulic according to claim 1 is cut and is expanded pincers, and its characteristics are: said battery is the 18V lithium battery; Said motor is 755 type dc motors; Said gearbox is that speed reducing ratio is 4 planet-gear speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066625.9A CN102581823B (en) | 2012-03-14 | 2012-03-14 | Portable hydraulic cutting expands pincers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066625.9A CN102581823B (en) | 2012-03-14 | 2012-03-14 | Portable hydraulic cutting expands pincers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102581823A true CN102581823A (en) | 2012-07-18 |
| CN102581823B CN102581823B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210066625.9A Active CN102581823B (en) | 2012-03-14 | 2012-03-14 | Portable hydraulic cutting expands pincers |
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| Country | Link |
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| CN (1) | CN102581823B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106625422A (en) * | 2017-02-13 | 2017-05-10 | 杭州众铎消防科技有限公司 | Electric cutting and expanding device |
| CN112060001A (en) * | 2020-09-28 | 2020-12-11 | 烟台艾迪精密机械股份有限公司 | Rescue is with cutting broken expanding pincers and control system of tearing open |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489926Y (en) * | 2001-03-05 | 2002-05-08 | 佛山市日丰企业有限公司 | Electric hydraulic spanner device |
| CN1710295A (en) * | 2004-06-16 | 2005-12-21 | 陈城书 | Electrohydraulic tube for electrohydraulic chip |
| EP1537933A4 (en) * | 2002-06-14 | 2006-03-29 | Ogura Kk | Hydraulic actuator |
| CN201586950U (en) * | 2009-10-15 | 2010-09-22 | 孙凤鸣 | Hydraulic sleeve wrench |
| CN202498524U (en) * | 2012-03-14 | 2012-10-24 | 上海尔速机械设备有限公司 | Portable hydraulic shearing and expanding pincers |
-
2012
- 2012-03-14 CN CN201210066625.9A patent/CN102581823B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489926Y (en) * | 2001-03-05 | 2002-05-08 | 佛山市日丰企业有限公司 | Electric hydraulic spanner device |
| EP1537933A4 (en) * | 2002-06-14 | 2006-03-29 | Ogura Kk | Hydraulic actuator |
| CN1710295A (en) * | 2004-06-16 | 2005-12-21 | 陈城书 | Electrohydraulic tube for electrohydraulic chip |
| CN201586950U (en) * | 2009-10-15 | 2010-09-22 | 孙凤鸣 | Hydraulic sleeve wrench |
| CN202498524U (en) * | 2012-03-14 | 2012-10-24 | 上海尔速机械设备有限公司 | Portable hydraulic shearing and expanding pincers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106625422A (en) * | 2017-02-13 | 2017-05-10 | 杭州众铎消防科技有限公司 | Electric cutting and expanding device |
| CN112060001A (en) * | 2020-09-28 | 2020-12-11 | 烟台艾迪精密机械股份有限公司 | Rescue is with cutting broken expanding pincers and control system of tearing open |
| CN112060001B (en) * | 2020-09-28 | 2023-11-28 | 烟台艾迪精密机械股份有限公司 | Rescue is with cutting broken expansion pincers and control system of tearing open |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102581823B (en) | 2015-10-21 |
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