CN205858848U - There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder - Google Patents
There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder Download PDFInfo
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- CN205858848U CN205858848U CN201620354886.4U CN201620354886U CN205858848U CN 205858848 U CN205858848 U CN 205858848U CN 201620354886 U CN201620354886 U CN 201620354886U CN 205858848 U CN205858848 U CN 205858848U
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Abstract
The utility model discloses and a kind of have the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder, in this blow cylinder, rear end cap, accumulation of energy cylinder barrel form accumulation of energy chamber with middle cover, and piston rod is hollow form, form bar content cavity between piston, piston rod；The outer cavity volume of bar is formed between piston, piston rod and impact cylinder barrel；Described bar content cavity cavity volume outer with bar is interconnected and to outside relative closure, forms air-capacitor in cylinder；In described cylinder, air-capacitor is filled with and maintains the compressed gas for return, forms return reset gas spring；Between piston one end and the middle cover of piston piston rod assembly, with end face seal structure, form the sudden change device of compressed gas active area.This utility model has the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder, has the technical-economic index advantage of the aspects such as energy-conservation, low noise, environmental protection, applied range.
Description
Technical field
This utility model relates to blow cylinder field, relates generally to a kind of have the energy-conservation of return reset gas spring in cylinder
Noise reduction single-acting blow cylinder.
Background technology
Blow cylinder is accumulation of energy chamber to carry out pressure limiting accumulation of energy, piston lifting surface area is suddenly expanded, and in cylinder operation
It is the particular cylinders of technical characteristic that intracavity forms pressure surge.Under conditions of cylinder diameter, rated pressure are identical, blow cylinder is defeated
The peak impact force spent is up to more than 50 times of regular cyclical, and its power consumption is only about 2 times of regular cyclical.Therefore, for
Need the occasion that instantaneous impact is the biggest, such as some press machine etc., use blow cylinder to replace regular cyclical, have the brightest
Aobvious energy-saving effect.
But, the range of application of current blow cylinder is the most extremely limited, is essentially limited to minor diameter cylinder.Cause this
The basic reason of situation, is the blow cylinder of existing structure, if cylinder diameter is relatively big, the volume that certainly will cause rod chamber is excessive
(for the cylinder of d/D=0.20, rod chamber volume is 0.96 with the ratio of rodless cavity volume), and the rushing of piston rod assembly
Hit speed to be exceedingly fast, a large amount of gases being present in rod chamber, because discharge is obstructed, the impulse noise of up to more than 100 decibels can be produced
Sound, this is that most industrial occasions institute is unacceptable.Additionally, due to the acceleration that piston rod assembly is when impact
Greatly, the back pressure that piston is formed by the gas in piston rod chamber because discharge is obstructed can suddenly raise, and even can make piston-work
Stopper rod assembly adverse movement, produces so-called " negative displacement " phenomenon.Devise what is called " row soon " blow cylinder despite people, but arrange soon
Apparatus structure is complicated, and manufacturing cost is high, and impact noise is reduced limited extent.
Additionally, existing blow cylinder is the most all double-acting, the power consumption of its backstroke is consumed energy close to impulse stroke
Half, energy dissipation is the most serious.
Summary of the invention
The purpose of this utility model is, overcomes existing blow cylinder impact noise excessive, and too much the lacking of return power consumption
Point, designs the low noise blow cylinder that the power consumption of a kind of backstroke is little, is significantly expanded the range of application of blow cylinder, for society
The relevant field of meeting, it is provided that a kind of energy-conservation, low noise, high efficiency pneumatic apparatus.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: one has return reset gas spring in cylinder
Energy-saving and noise-reducing single-acting blow cylinder, its piston rod is hollow form, between piston, piston rod formed bar content cavity；Described bar
Content cavity cavity volume outer with bar is interconnected and to outside relative closure, forms air-capacitor in cylinder；In described cylinder, air-capacitor is filled with and protects
Hold the compressed gas for return, form return reset gas spring.
Preferably, a kind of have the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring, its piston-work in cylinder
Between piston one end and the middle cover of stopper rod assembly, with end face seal structure, form the sudden change device of compressed gas active area.
Due to the utilization of technique scheme, this utility model compared with prior art has the advantage that
1, this utility model is a kind of has the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder, due to
In the course of the work, the gas between piston rod and impact inner wall of cylinder, is not to flow into air as existing blow cylinder, and
Being to flow into the bar content cavity that piston is formed with hollow form piston rod, impact noise can be greatly lowered, and can be reduced to 50 completely
Below Fen Bei, it is possible to accepted by most industrial occasions, thus application scenario and the model of blow cylinder can be significantly expanded
Enclose.
2, this utility model is a kind of has the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder, due to
Utilizing gas spring return, return power only to need to overcome the frictional force of piston rod assembly, thus it is little to consume energy, ratio is existing
Double acting blow cylinder, energy-saving effect is notable.
Accompanying drawing explanation
Accompanying drawing 1 is the state diagram that existing double acting blow cylinder is in impulse stroke.It can be seen that existing double acting punching
Hitting cylinder, owing to the volume of piston rod chamber is excessive, and the impact velocity of piston rod assembly is exceedingly fast, not only in rod chamber
Gas be obstructed the back pressure that piston is formed can suddenly can be raised because of discharge, and great impact noise can be produced.
Accompanying drawing 2,3,4 has the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder for this utility model
Structure principle chart.Wherein, Fig. 2 is initial condition, and Fig. 3 is the accumulation of energy of accumulation of energy chamber, not yet impact outburst state, and Fig. 4 is quick-fried for impact
After Faing, the impulse stroke state of piston rod assembly accelerated motion output impulsive force acting, Fig. 5 is backstroke state.
In figure, 1, rear end cap；2, accumulation of energy cylinder barrel；3, middle cover；4, impact cylinder barrel；5, piston rod assembly: 51, piston；
52, sealing gasket；53, piston rod；6, right end cap；7, two position three-way valve；8, pressure switch；9, accumulation of energy chamber；10, bar content cavity；11、
The outer cavity volume of bar；12, air-through holes
Detailed description of the invention
Accompanying drawing 2,3,4,5 is the energy-saving and noise-reducing single-acting impact gas that this utility model has return reset gas spring in cylinder
One specific embodiment of cylinder.Below, in conjunction with this specific embodiment, the technical solution of the utility model is explained further
State.
The relatively-stationary parts of cylinder are rear end cap 1, accumulation of energy cylinder barrel 2, middle cover 3, impact cylinder barrel 4, right end cap 6, motion
Parts are piston rod assembly 5, and controlling element is two position three-way valve 7, pressure switch 8.
Rear end cap 1, accumulation of energy cylinder barrel 2 form accumulation of energy chamber 9 with middle cover 3；Piston rod 53 and the piston 51 of hollow form are formed in bar
Cavity volume 10；Piston 51, piston rod 53 and impact cylinder barrel 4 form the outer cavity volume 11 of bar, piston rod 53 and the junction of piston 51, are provided with
Air-through holes 12；Bar content cavity 10 cavity volume 11 outer with bar, realizes interconnecting by air-through holes 12.The bar interconnected
Content cavity 10 cavity volume 11 outer with bar, is realized by piston 51 and the sealing structure of piston rod 53 outside relative closure, thus shape
Become air-capacitor in cylinder；In cylinder, air-capacitor is filled with and maintains the compressed gas for return, forms return reset gas spring.For returning
The pressure limit of the compressed gas of journey, is set by pressure switch 8.
Additionally, in piston one stomidium of piston rod assembly 5, be installed with sealing gasket 52, and middle cover 3 right-hand member be provided with convex
Edge, the two cooperatively forms the sudden change device of compressed gas active area with end face seal.
When piston rod assembly 5 is in home position, i.e. shown in Fig. 2 during position, the right position of two position three-way valve 7 works, and stores
The inner chamber of energy cylinder barrel 2, by the porting on rear end cap 1 and two position three-way valve 7, communicates with air.Piston rod assembly
5, under the effect of return reset gas spring gas backpressure, it is in high order end position.It is fixedly arranged on the sealing gasket of piston 51 one end
52, contact with the flange part of middle cover 3 right-hand member, and produce elastic deformation, accumulation of energy chamber is isolated with working chamber.In this case, live
Fill in the relatively areola between 51 left sides and middle cover 3 right side, referred to as tail chamber.When sealing gasket 52 produces elastic deformation, tail intracavity
Air by the steam vent on middle cover 3, enter air.
When blow cylinder is in energy accumulating state shown in Fig. 3, the left position of two position three-way valve 7 works, and compressed air passes through rear end
Porting on lid 1, enters the inner chamber of accumulation of energy cylinder barrel 2.Owing to the bellmouth orifice right-hand member diameter in the middle of middle cover 3 is less, it is only and lives
Filling in about the 1/3 of 51 diameters, its cross-sectional area is only about the 1/9 of piston 51 area, and therefore, the compression in accumulation of energy chamber 9 is empty
Gas, pressure needs to reach certain marginal value, and piston rod assembly 5 can be promoted to move right.
The once compressed air in accumulation of energy chamber 9, when pressure reaches the marginal value that impact triggers, by the middle loudspeaker of middle cover 3
Hole acts on the power on piston 51 left side, just can overcome reverberation matrix method and the frictional force of return reset gas spring so that fixed
Sealing gasket 52 on piston 51 left side, departs from the flange part of middle cover 3 right-hand member.Middle cover 3 right-hand member flange is departed from sealing gasket 52
In a flash, compressed air acts on the area on piston 51 left side, suddenly by the face of middle cover 3 middle bellmouth orifice right-hand member in portion
Long-pending, expand the whole cross-sectional area of piston 51 to quickly, active area moment expands about 9 times to, thus at working chamber
Interior formation air pressure shock wave.This air pressure shock wave, forces piston rod assembly 5, moves right with great acceleration, energy
The instant impact that enough output is the biggest, externally does work.As shown in Figure 4.
When entering the impact outburst stage, the compressed gas of the outer cavity volume 11 of bar, by air-through holes 12, part flows in bar
Cavity volume 10, the return reset gas spring back pressure to piston 51 right side, increase.But due to the volume of the outer cavity volume 11 of bar,
It is significantly less than the volume of bar content cavity 10, according to the state equation p of ideal gas1T1V1=p2T2V2Understand, return reset gas bullet
The spring back pressure to piston 51 right side, increase rate is limited.The most key a bit, in cylinder, air-capacitor is to close, and does not has gas
Direction of flow air, thus impact noise is the lowest.Owing to noise pollution is minimum, it is possible to be significantly expanded the applicable field of blow cylinder
Close, and enable to blow cylinder and develop to major diameter direction.
Impact is after the outburst stage terminates, i.e. piston rod assembly 5 export the biggest instant impact externally do work with
After, two position three-way valve 6 switches to again the work of right position, the rodless cavity of blow cylinder and accumulation of energy chamber 9 UNICOM, by rear end cap 1
Port and the valve port of two position three-way valve 6, lead to air.Return compressed gas in bar content cavity 10, is circulated by air
Hole 12, part flows into the outer cavity volume 11 of bar, and return reset gas spring acts on the power on piston 51 right side, promotes piston-work
Stopper rod assembly 5, to left movement, carries out return reset.Under this state, in cylinder, the pressure of air-capacitor gradually decreases；Equally, according to
The state equation p of ideal gas1T1V1=p2T2V2Understanding, in cylinder, the pressure drop low amplitude of air-capacitor is limited.As shown in Figure 5.
Finally, piston rod assembly 5 return resets to home position as shown in Figure 2, i.e. high order end position.
It can be appreciated that the return back pressure that return reset gas spring is to piston 51 right side, and the return thrust formed, only
It is the least for needing to overcome the frictional force of piston rod assembly 5, relative value.Thus, return reset gas in this utility model cylinder
The energy-saving and noise-reducing single-acting blow cylinder of body spring, compared with the existing return too much traditional double impulses cylinder of power consumption,
Energy-saving effect is the most notable.
In cylinder, air-capacitor is filled with and maintains the control device of return compressed gas, can have many kind technical schemes, this
It will not go into details as space is limited at place.No matter cylinder is under which kind of duty, if the pressure of air-capacitor in cylinder, because the reasons such as leakage
And when being less than the minimum pressure that pressure switch 8 sets, control system will send signal, and compressed air will be filled with cylinder from outside
Interior air-capacitor.And once air-capacitor pressure reaches the maximum pressure that pressure switch 8 sets in cylinder, control system can send signal and stop again
Only inflation.Due to the active force of the return reset gas spring that air-capacitor in cylinder is formed, can be according to the actual friction of each cylinder
Power carries out on-the-spot adjustment and sets pressure switch 8, it is possible to reduce return active force redundancy to greatest extent.This point,
The existing single-acting blow cylinder of spring reset return, may not accomplish.In addition need to point out especially
Being to be inflated air-capacitor in cylinder, be usually to supplement leakage, its number of times is little.
The sudden change device of compressed gas active area in work process, it is possibility to have multiple technologies scheme, currently mainly has
End face seal seals two big classes with the face of cylinder.For the blow cylinder of piston rod component movement, end face seal structure is more
Simple and reliable, therefore present invention preferably employs end face seal structure.
It should be strongly noted that the return reset gas spring in cylinder of the present invention, and existing gas spring, such as nitrogen
Air springs etc., are essentially different.Existing gas spring, such as nitrogen spring etc., is a relatively independent packaged unit, root
Originally cannot use in cylinder interior.And the return reset gas spring in cylinder of the present invention, it is to utilize air-capacitor self-assembling formation in cylinder,
Need not take up any axial space.
Above-described embodiment is simply to illustrate that innovation thinking of the present utility model and technical characterstic, but guarantor of the present utility model
The scope of protecting is not limited to above-mentioned specific detailed description of the invention.All according to this utility model innovation thinking essence and technical characterstic
And the various equivalence changes carried out or the modification of locality, particularly seal structure, control device and piston rod group
The equivalent change etc. of part, all should contain within protection domain of the present utility model.
Claims (2)
1. one kind has the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder, it is characterised in that: this impact
Cylinder has relatively-stationary rear end cap, accumulation of energy cylinder barrel, middle cover, impact cylinder barrel, right end cap, this blow cylinder also include piston-
Piston rod assembly, wherein rear end cap, accumulation of energy cylinder barrel form accumulation of energy chamber with middle cover, and piston rod is hollow form, between piston, piston rod
Form bar content cavity；The outer cavity volume of bar is formed between piston, piston rod and impact cylinder barrel；Described bar content cavity cavity volume outer with bar is mutual
Connect and to outside relative closure, form air-capacitor in cylinder；In described cylinder, air-capacitor is filled with and maintains the compressed gas for return
Body, forms return reset gas spring.
A kind of energy-saving and noise-reducing single-acting impact gas with return reset gas spring in cylinder the most according to claim 1
Cylinder, it is characterised in that: between piston one end and the middle cover of piston rod assembly, with end face seal structure, form compressed gas
The sudden change device of active area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620354886.4U CN205858848U (en) | 2016-04-26 | 2016-04-26 | There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620354886.4U CN205858848U (en) | 2016-04-26 | 2016-04-26 | There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN205858848U true CN205858848U (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620354886.4U Expired - Fee Related CN205858848U (en) | 2016-04-26 | 2016-04-26 | There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder |
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| Country | Link |
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| CN (1) | CN205858848U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573108A (en) * | 2018-12-29 | 2019-04-05 | 哈尔滨工业大学 | One kind is towards reusable rocket landing supporting leg formula two-stage buffer |
| CN117207237A (en) * | 2023-11-09 | 2023-12-12 | 之江实验室 | Joint system and robot |
| CN117212291A (en) * | 2023-11-09 | 2023-12-12 | 之江实验室 | Transmission system and robot |
-
2016
- 2016-04-26 CN CN201620354886.4U patent/CN205858848U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573108A (en) * | 2018-12-29 | 2019-04-05 | 哈尔滨工业大学 | One kind is towards reusable rocket landing supporting leg formula two-stage buffer |
| CN117207237A (en) * | 2023-11-09 | 2023-12-12 | 之江实验室 | Joint system and robot |
| CN117212291A (en) * | 2023-11-09 | 2023-12-12 | 之江实验室 | Transmission system and robot |
| CN117212291B (en) * | 2023-11-09 | 2024-01-26 | 之江实验室 | Transmission system and robot |
| CN117207237B (en) * | 2023-11-09 | 2024-02-02 | 之江实验室 | Joint system and robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20190426 |
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| CF01 | Termination of patent right due to non-payment of annual fee |