CN206801978U - A kind of pneumohydraulic pressure-cylinder - Google Patents
A kind of pneumohydraulic pressure-cylinder Download PDFInfo
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- CN206801978U CN206801978U CN201720503251.0U CN201720503251U CN206801978U CN 206801978 U CN206801978 U CN 206801978U CN 201720503251 U CN201720503251 U CN 201720503251U CN 206801978 U CN206801978 U CN 206801978U
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Abstract
The utility model discloses a kind of pneumohydraulic pressure-cylinder, including Master cylinder body, and cylinder block, upper piston, lower piston are provided with Master cylinder body；The lower end of lower piston and cylinder block is connected, and the upper end of cylinder block is connected after passing through upper piston with upper limit；Master cylinder body is divided into upper air cavity, oil pocket and lower air chamber by upper piston, lower piston；Upper stomata, oil filler point, air holes are provided with Master cylinder body, upper stomata is connected with upper air cavity, and oil filler point is connected with oil pocket, and air holes is connected with lower air chamber；The bottom of cylinder block is provided with oilhole, and the oilhole is connected with oil pocket；One end of cylinder rod is provided with oil cylinder piston, and stretches into cylinder block, and the other end of cylinder rod sequentially passes through cylinder block, Master cylinder body；Oil duct is provided with cylinder rod, one end of oil duct connects with hydraulic fluid port；The oil pocket of cylinder block is connected by oilhole with the oil pocket of Master cylinder body.It the utility model small volume, can realize that power gas is isolated with hydraulic oil, reduce fluid consumption.
Description
Technical field
The utility model belongs to pressurized cylinder technical field, and in particular to a kind of pneumohydraulic pressure-cylinder.
Background technology
Hydraulic system is widely used in the national economy every field such as ship, automobile, other various machineries.Hydraulic station is liquid
Pressure system provides power source, and the hydraulic pump continuous running of hydraulic station has the shortcomings of big noise, energy waste, oil temperature rise.Cause
This, in some assemblings, clamps etc. that control action is single and low discharge application scenario, substitutes tradition using pneumohydraulic pressure-cylinder mostly
Hydraulic power system.
At present, there is the shortcomings that volume is larger in existing pneumohydraulic pressure-cylinder, can not be the simple hydraulic system of some low discharges
Hydraulic power supply is provided.And existing pneumohydraulic pressure-cylinder can not realize isolating for power gas and hydraulic oil, add in use
Fluid consumes, and causes equipment ambient contamination.
Utility model content
The purpose of this utility model is to provide a kind of small volume, can realize that power gas is isolated with hydraulic oil, reduce fluid
The pneumohydraulic pressure-cylinder of consumption.
Technical scheme is used by the utility model：
A kind of pneumohydraulic pressure-cylinder, including Master cylinder body, cylinder block, upper piston, lower piston and cylinder rod, the oil cylinder
Body, upper piston, lower piston are placed in Master cylinder body；
The upper surface of lower piston is fixedly connected with the lower end of cylinder block, the upper end of cylinder block pass through after upper piston with it is upper
Spacing connection；
Upper piston, lower piston and Master cylinder body seal, and upper piston, lower piston Master cylinder body is divided into from top to bottom upper air cavity,
Oil pocket and lower air chamber；Upper stomata, oil filler point, air holes are provided with Master cylinder body, upper stomata is connected with upper air cavity, oil filler point and
Oil pocket is connected, and air holes is connected with lower air chamber；The bottom of the cylinder block is provided with oilhole, and the oilhole is connected with oil pocket
It is logical；
One end of the cylinder rod is provided with oil cylinder piston and stretched into cylinder block, and the other end of cylinder rod sequentially passes through oil
Cylinder cylinder body, Master cylinder body；Oil duct is provided with the cylinder rod, one end of oil duct connects with hydraulic fluid port, and hydraulic fluid port is that pneumohydraulic pressure-cylinder is fuel-displaced
With oil return interface；The other end of oil duct connects with the oil pocket of cylinder block；The oil pocket of the cylinder block passes through oilhole and master cylinder
The oil pocket connection of body；The oil cylinder piston seals with cylinder block.
By such scheme, pedestal is provided with cylinder block, upper piston moves between upper limit and pedestal, on ensuring
The stroke of piston, make total more stable.
By such scheme, elastomeric element is provided between pedestal and upper piston, and the elastomeric element is spring, certainly
There can be the elastomeric element of reset function for other, the structure can extend the service life of upper piston.
By such scheme, lower limit is provided with Master cylinder body bottom, above air holes, the structure can extend for the lower position
The service life of the service life of whole device, particularly lower piston.
By such scheme, the lower limit, upper limit are limited block or spacing ring, make and install to facilitate.
By such scheme, cylinder body lid is fixed with the Master cylinder body, the cylinder body lid is fixedly connected with cylinder rod, and the cylinder
Body lid is integrally formed with cylinder rod；This is simple in construction, can be effectively isolated power gas and hydraulic oil, reduces fluid consumption.
By such scheme, between upper piston, lower piston and Master cylinder body, and there is fluid between oil cylinder piston and cylinder block
Lubrication, can greatly reduce the abrasion of piston, improve service life.
By such scheme, mounting hole is provided with the bottom of Master cylinder body, to facilitate fixed pneumohydraulic pressure-cylinder.
By such scheme, oil cylinder piston is looped around cylinder rod bottom surface；The axis of oil duct and the axis of cylinder rod
Line overlaps, and in order to ensure intensity, improves service life, extends usage time.
Cylinder block is opened on the surface of cylinder block lower half with cylinder rod and lower piston composition pressurizing cylinder, oilhole
Circular hole, oil filler point are oiling and the draining port of hydraulic oil, and upper stomata is upper air cavity air inlet and exhaust port, and air holes is lower gas
Chamber air inlet and exhaust port.
The beneficial effects of the utility model are：
Cylinder block, upper piston, lower piston are placed in Master cylinder body, i.e., twin-tub design, simple and compact for structure, energy inside and outside use
The volume of pneumohydraulic pressure-cylinder is effectively reduced, hydraulic power supply can be provided to act the single simple hydraulic system of low discharge；
Upper piston, lower piston and Master cylinder body sealing, oil cylinder piston and cylinder block seal, realize power gas and hydraulic oil every
From, reduce in use fluid consumption and environmental pollution；
By adjusting the pressure size of compressed air in upper air cavity, lower air chamber, the pressure of output fluid can be conveniently adjusted
Power scope, it is very easy to use.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the cross section structure diagram of the utility model pneumohydraulic pressure-cylinder；
Fig. 2 is cylinder rod, the attachment structure schematic diagram of cylinder body lid；
Fig. 3 is the attachment structure schematic diagram of upper piston, lower piston, cylinder block；
Fig. 4 is the attachment structure schematic diagram of Master cylinder body, upper piston, lower piston, cylinder block；
Wherein：1- cylinder body lids, 2- Master cylinder bodies, 3- cylinder rods, 4- oil cylinder pistons, 5- cylinder blocks, 6- lower pistons, 7- oil
Road, the upper stomatas of 8-, 9- hydraulic fluid ports, 10- oilholes, 11- air holes, 12- oil filler points, 13- mounting holes, 14- lower limits, 15- pedestals,
16- springs, 17- upper pistons, 18- upper limits, the upper air cavitys of 201-, 202- lower air chambers, 203- oil pockets.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
Referring to Fig. 1-Fig. 4, a kind of pneumohydraulic pressure-cylinder, including Master cylinder body 2, cylinder block 5, upper piston 17, lower piston 6 and oil
Cylinder rod 3, cylinder block 5, upper piston 17, lower piston 6 are placed in Master cylinder body 2, double-cylinder structure inside and outside formation, reduce gas-liquid pressure-boosting
The volume of cylinder.The upper surface of lower piston 6 is fixedly connected with the lower end of cylinder block 5, and the upper end of cylinder block 5 passes through upper piston 17
It is connected afterwards with upper limit 18, pedestal 15 is provided with cylinder block 5, spring 16 is provided between pedestal 15 and upper piston 17, on
Piston 17 moves between upper limit 18 and pedestal 15；Upper piston 17, lower piston 6 and Master cylinder body 2 seal, and upper piston 17, under
Master cylinder body 2 is divided into upper air cavity 201, oil pocket 203 and lower air chamber 202 by piston 6 from top to bottom；Upper stomata is provided with Master cylinder body 2
8th, oil filler point 12, air holes 11, upper stomata 8 are connected with upper air cavity 201, and oil filler point 12 is connected with oil pocket 203, air holes 11
It is connected with lower air chamber 202；The bottom of cylinder block 5 is provided with oilhole 10, and the oilhole 10 is connected with oil pocket 203.Cylinder rod 3
One end is provided with oil cylinder piston 4 and stretched into cylinder block 5, and the other end of cylinder rod 3 sequentially passes through cylinder block 5, the and of Master cylinder body 2
Cylinder body lid 1, and cylinder rod 3 is fixedly connected with cylinder body lid 1, cylinder body lid 1 is fixedly connected with Master cylinder body 2；Oil duct is provided with cylinder rod 3
7, one end of oil duct 7 connects with hydraulic fluid port 9, and hydraulic fluid port 9 is that pneumohydraulic pressure-cylinder is fuel-displaced and oil return interface；The other end and oil cylinder of oil duct 7
The oil pocket connection of cylinder body 5；The oil pocket of cylinder block 5 is connected by oilhole 10 with the oil pocket 203 of Master cylinder body 2；Oil cylinder piston 4 and oil
Cylinder cylinder body 5 seals, and realizes that power gas is isolated with hydraulic oil.
In the utility model, lower limit 14 can be provided with the bottom of Master cylinder body 2, the lower limit 14 is placed in the top of air holes 11,
Spatial movement of the lower piston 6 in lower limit more than 14.Lower limit 14, upper limit 18 can be spacing ring, and certainly or other are limited
Bit architecture.Mounting hole 13 is provided with the bottom of Master cylinder body 2, to facilitate fixed pneumohydraulic pressure-cylinder.
In the utility model, oil cylinder piston 4 is looped around the bottom surface of cylinder rod 3；The axis of oil duct 7 and cylinder rod 3
Axis overlap, in order to ensure intensity, improve service life, extend usage time.Cylinder block 5 and cylinder rod 3 and under
Piston 6 forms pressurizing cylinder, and oilhole 10 is the circular hole being opened on the lower half surface of cylinder block 5, and oil filler point 12 is hydraulic oil
Refuel and draining port, upper stomata 8 is the upper air inlet of air cavity 201 and exhaust port, and air holes 11 is the air inlet of lower air chamber 202 and exhaust
Interface.
It is as described below as the execution unit of the utility model embodiment, specific work process using clamping cylinder：
The course of work mainly has precompressed, supercharging and return three phases：
Pre-pressing stage：Hydraulic fluid port 9 is connected with clamping cylinder, and lower piston 6 is at the lower limit 14 in Master cylinder body 2, oil pocket 203
Full of hydraulic oil, upper stomata 8 is closed.Now, air holes 11 connects the compressed air of certain pressure, and the stress of lower piston 6 is to moving up
Dynamic, the air in upper air cavity 201 is compressed so that upper piston 17 moves down, and fluid compresses in oil pocket 203, passes through oilhole
10th, fluid is depressed into clamping cylinder by oil duct 7 and hydraulic fluid port 9, and as lower piston 6 moves up, oil pressure also constantly raises in clamping cylinder, oil
Hole 10 also moves up therewith, and when oilhole 10 is risen at oil cylinder piston 4, oil cylinder piston 4 is the fluid and oil pocket in clamping cylinder
Fluid isolation in 203 is got up, and oil duct 7, hydraulic fluid port 9 and clamping cylinder form the oil circuit of closing, and certain oil pressure be present, in advance
The pressure stage completes.
Pressurization stages：Upper stomata 8 is opened, and upper air cavity 201 communicates pressure reduction with air, and lower piston 6 is made in compressed air
Continued to move up under, sealing fluid presses oil the further pressure rise by compression in cylinder block 5, until acting on lower piston
The pressure of 6 upper and lower surfaces reaches balance, and the oil liquid pressure now acted on clamping cylinder is approximately equal to compressed air pressure with increasing
Press multiple（The lower surface area of lower piston 6 divided by the lower surface surface area of oil cylinder piston 4）Product, clamping cylinder be in clamp shape
State.
During the return stage：Air holes 11 open communicated with air, upper stomata 8 is passed through compressed air, the stress of upper piston 17 and
Move down, under the extruding of fluid, lower piston 6 also moves down, and sealed hydraulic oil volume becomes big and dropped in cylinder block 5
Pressure, when oilhole 10 drops to 4 bottom of oil cylinder piston, the fluid in clamping cylinder connects with the fluid in oil pocket 203, oil
Pressure is rapid to be declined, and upper piston 17 and lower piston 6 continue to move down, and the fluid in clamping cylinder is returned in oil pocket 203, now,
The compressed air that cut-out is led in upper stomata 8, makes stomata 8 be communicated with air, under gravity, lower piston 6 moves to master slowly
Stop at lower limit 14 in cylinder body 2, clamping cylinder is in open configuration.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.
Claims (9)
- A kind of 1. pneumohydraulic pressure-cylinder, it is characterised in that：Including Master cylinder body, cylinder block, upper piston, lower piston and cylinder rod, institute Cylinder block, upper piston, lower piston is stated to be placed in Master cylinder body；The upper surface of lower piston is fixedly connected with the lower end of cylinder block, the upper end of cylinder block pass through after upper piston with upper limit Connection；Upper piston, lower piston and Master cylinder body seal, and Master cylinder body is divided into upper air cavity, oil pocket by upper piston, lower piston from top to bottom And lower air chamber；Upper stomata, oil filler point, air holes are provided with Master cylinder body, upper stomata is connected with upper air cavity, oil filler point and oil pocket It is connected, air holes is connected with lower air chamber；The bottom of the cylinder block is provided with oilhole, and the oilhole is connected with oil pocket；One end of the cylinder rod is provided with oil cylinder piston and stretched into cylinder block, and the other end of cylinder rod sequentially passes through oil cylinder Body, Master cylinder body；Oil duct is provided with the cylinder rod, one end of oil duct connects with hydraulic fluid port, the other end of oil duct and cylinder block Oil pocket connects；The oil pocket of the cylinder block is connected by oilhole with the oil pocket of Master cylinder body；The oil cylinder piston and cylinder block Sealing.
- 2. pneumohydraulic pressure-cylinder according to claim 1, it is characterised in that：Pedestal is provided with cylinder block, upper piston exists Moved between upper limit and pedestal.
- 3. pneumohydraulic pressure-cylinder according to claim 2, it is characterised in that：Elastic portion is provided between pedestal and upper piston Part.
- 4. pneumohydraulic pressure-cylinder according to claim 3, it is characterised in that：The elastomeric element is spring.
- 5. according to any described pneumohydraulic pressure-cylinders of claim 1-3, it is characterised in that：Lower limit is provided with Master cylinder body bottom, The lower position is above air holes.
- 6. pneumohydraulic pressure-cylinder according to claim 5, it is characterised in that：The lower limit, upper limit are limited block or limit Position ring.
- 7. pneumohydraulic pressure-cylinder according to claim 1, it is characterised in that：Cylinder body lid is fixed with the Master cylinder body, the cylinder Body lid is fixedly connected with cylinder rod.
- 8. pneumohydraulic pressure-cylinder according to claim 1, it is characterised in that：The cylinder body lid is integrally formed with cylinder rod.
- 9. pneumohydraulic pressure-cylinder according to claim 1, it is characterised in that：Mounting hole is provided with the bottom of Master cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720503251.0U CN206801978U (en) | 2017-05-08 | 2017-05-08 | A kind of pneumohydraulic pressure-cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720503251.0U CN206801978U (en) | 2017-05-08 | 2017-05-08 | A kind of pneumohydraulic pressure-cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801978U true CN206801978U (en) | 2017-12-26 |
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ID=60739457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720503251.0U Active CN206801978U (en) | 2017-05-08 | 2017-05-08 | A kind of pneumohydraulic pressure-cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801978U (en) |
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2017
- 2017-05-08 CN CN201720503251.0U patent/CN206801978U/en active Active
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