CN1208827A - Arrangement for providing automatic damping adjustment - Google Patents
Arrangement for providing automatic damping adjustment Download PDFInfo
- Publication number
- CN1208827A CN1208827A CN 97115830 CN97115830A CN1208827A CN 1208827 A CN1208827 A CN 1208827A CN 97115830 CN97115830 CN 97115830 CN 97115830 A CN97115830 A CN 97115830A CN 1208827 A CN1208827 A CN 1208827A
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- valve
- pressure
- dynamic formula
- equalizing piston
- spool
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- 238000013016 damping Methods 0.000 title 1
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- Control Of Fluid Pressure (AREA)
Abstract
The present invention provides an automatic balancer. The main valve portion is composed of exhaust valve and air-feeding valve. The exhaust valve and air-feeding valve are up-down symmetrically installed in the main valve cavity, and the upper portion of balance piston is equipped with back-pressure chamber, and its lower portion is equipped with feedback chamber connected with secondary pressure hole through feedback channel, and the balance piston and the valve rod are rigid-jointed, at the same time rigid-jointed with output rod, and the lower end of the output rod is equipped with a connecting mechanism to connect with load. Said invention is a full-pneumatic automatic balancer which can be used in the pneumatic balanced booster system and other control system having need of automatically-regulating pressure.
Description
The present invention proposes a kind of automatic balancing unit, is the control that working medium carries out power with the fluid, is a kind ofly for moving up and down weight weight weight to be carried out self balancing device.
Present aerodynamic force control system all uses air vent valve (reduction valve) or electricity-atmospheric pressure Proportional valve to finish the control of gas pressure.Air vent valve changes its delivery pressure by handle with sleeve, it can not the perception load force variation and automatic pressure regulation, therefore, concerning the air-balance device that needs the automatic matched load weight of pressure energy, air vent valve can not meet the demands, at this moment, people often use one group of air vent valve and the pneumatic commutation loop of a cover to come approx, have level ground to realize the variation of its pressure.Obviously, its poor performance and cost height.Thereby make electricity consumption-atmospheric pressure Proportional valve can by force transducer come the perception load force automatically adjustments of gas pressure make it coupling, but this has increased circuit kit and has needed power supply, thereby has influenced its using scope.
Thereby the objective of the invention is to propose a kind of complete pneumatic, can the perception load force change and regulate its outlet pressure automatically and make it automatic balancing unit with the load force coupling.This balace weight not only can be applied on the air-balance formula force aid system, can also be applied on other Force control systems that need automatic pressure regulation.
Principle of the present invention is: between secondary pressure mouth A and the supply pressure mouth P air feed valve port 15 is set, between secondary pressure mouth A and the relief opening R exhaust valve port 17 is set.In the back pressure chamber 6 of equalizing piston 5 upsides, introduce back pressure, introduce secondary pressure in the feedback chamber 4 of equalizing piston 5 downsides.Load with constant weight acts on the bar 2 of exerting oneself of equalizing piston 5.Steam supply valve and outlet valve are formed by carrying dynamic formula spool and valve seat.When feedback chamber 4 internal pressures are higher than the needed pressure of balance, equalizing piston 5 moves upward, valve rod 9 is opened exhaust valve port 17, and air feed valve port 15 is in closed condition under the effect of Returnning spring 14, and the gas pressure of secondary pressure mouth A descends by exhaust valve port 17 pressure releases; And when feedback chamber 4 internal pressures are lower than the needed pressure of balance, equalizing piston 5 moves downward, valve rod 9 is opened air feed valve port 15, and exhaust valve port 17 is in closed condition under the effect of Returnning spring 18, and the gas pressure of secondary pressure mouth A rises by 15 pressurisings of air feed valve port.When the pressure of secondary pressure mouth A and load are complementary, thereby air feed valve port 15 and exhaust valve port 17 are all closed autobalance.Therefore, when being connected with the load of Different Weight on the bar 2 of exerting oneself, this automatic balancing unit can guarantee that the pressure of secondary pressure mouth A adapts with it automatically.Pass the center hole of air feed valve port 15 and exhaust valve port 17 poppet valve cores by the valve rod 9 that the middle part is had shoulder, thus rigidly connected with the equalizing piston 5 and the bar 2 of exerting oneself.Bar 2 lower ends of exerting oneself have a bindiny mechanism (hook 1 as shown in fig. 1) to connect load, thereby realize aforesaid autobalance.Setting operation handle 3 of the present invention, when operating grip 3 downwards the time, spool moves up with respect to valve body exhaust valve port 17 is opened, and the pressure of secondary pressure mouth A descends; When operating grip 3 made progress, spool moved down with respect to valve body air feed valve port 15 is opened, and the pressure of secondary pressure mouth A rises.Therefore, move downward or upward, just can destroy aforesaid autobalance state and make the pressure of secondary pressure mouth A be below or above balance pressure by making operating grip 3.Have only when operating grip 3 is in meta, just realize aforesaid autobalance again.Primary valve part of the present invention mainly is made of exhaust plug 17b and air feed spool 15b and valve rod 9.Exhaust plug 17b and steam supply valve 15b are installed in the main valve chamber up and down symmetrically.Carry dynamic formula outlet valve spool 17b and valve seat 17a and constitute exhaust valve port 17, Returnning spring 18 is installed in to be carried among the dynamic formula outlet valve spool 17b, under the effect of Returnning spring 18, carry dynamic formula outlet valve spool 17b and be pressed in exhaust valve port 17 is closed, thereby secondary pressure mouth A and relief opening R are isolated; Carry dynamic formula steam supply valve spool 15b and valve seat 15a and constitute air feed valve port 15, Returnning spring 14 is installed in to be carried among the dynamic formula steam supply valve spool 15b, under the effect of Returnning spring 14, be pressed in and air feed valve port 15 closed secondary pressure mouth A and air supply opening P are isolated thereby carry dynamic formula steam supply valve spool 15b.Carry dynamic formula outlet valve spool 17b and carry between the dynamic formula steam supply valve spool 15b valve rod 9 that has a shoulder by the centre center hole by two spools and connect.When valve rod 9 moves upward, the boss at valve rod middle part makes to be carried dynamic formula outlet valve spool 17b and overcomes the effect of Returnning spring 18 and move upward, exhaust valve port 17 is opened, secondary pressure mouth A and relief opening R are communicated with, the air of secondary pressure mouth A still makes air feed valve port 15 close to relief opening R discharging under the effect of Returnning spring 14 and carry dynamic formula steam supply valve spool 15b this moment; When valve rod 9 moves downward, the shoulder at valve rod middle part makes to be carried dynamic formula steam supply valve spool 15b and overcomes the effect of Returnning spring 14 and move downward, air feed valve port 15 is opened, secondary pressure mouth A and air supply opening P are communicated with, air supply opening P is to secondary pressure mouth A air feed, and carry dynamic formula outlet valve spool 17b this moment still makes exhaust valve port 17 close under the effect of Returnning spring 18.Equalizing piston 5 is rigidly connected with valve rod 9, and back pressure chamber 6 is arranged at the top of equalizing piston 5; Feedback chamber 4 is arranged at the bottom of equalizing piston 5, and feedback chamber 4 links to each other with secondary pressure mouth A by feedback channel 13, and equalizing piston 5 is simultaneously rigidly connected with the bar 2 of exerting oneself, and it is that hook 1 is connected with load that there is a bindiny mechanism bar 2 lower ends of exerting oneself.When equalizing piston 5 moves up and down, by valve rod 9 exhaust valve port 17 and air feed valve port 15 are opened or closed, thereby make secondary pressure mouth A to relief opening R exhaust or by air supply opening P air feed by aforementioned principles.Operating grip 3 is connected with the bar 2 of exerting oneself and constitutes leverage by fulcrum 3a, and fulcrum 3a and valve body 7 are connected.When operating grip 3 moves up and down, by the bar 2 of exerting oneself, equalizing piston 5 and valve rod 9 exhaust valve port 17 and air feed valve port 15 are opened or closed, thereby make secondary pressure mouth A to relief opening R exhaust or by air supply opening P air feed by aforementioned principles.For the weight of balance valve body, by built-in pneumatic pressure- release valve 19,20,21,22,23,24 back pressure chamber 6 is introduced by back pressure pipe 10 in supply gas pressure decompression back in the accompanying drawing 1, thus the weight of balance valve body 7,25.This method range of balance is big, easy to adjust.Come the weight of balance valve body in the accompanying drawing 2 by back pressure spring 26, it is simple in structure, but range of balance is little.Concrete structure of the present invention is: carry dynamic formula outlet valve 17 and carry dynamic formula steam supply valve 15 and be installed in the main valve chamber symmetrically up and down, Returnning spring 18 is installed in to be carried among the dynamic formula outlet valve spool 17b, carry dynamic formula outlet valve spool 17b and carry between the dynamic formula steam supply valve spool 15b valve rod 9 that has a shoulder by the centre center hole by two spools and connect, equalizing piston 5 is rigidly connected with valve rod 9, back pressure chamber 6 is arranged at the top of equalizing piston 5, feedback chamber 4 is arranged at the bottom of equalizing piston 5, feedback chamber 4 links to each other with secondary pressure mouth A by feedback channel 13, equalizing piston 5 is simultaneously rigidly connected with the bar 2 of exerting oneself, bar 2 lower ends of exerting oneself have a bindiny mechanism 1 to connect load, operating grip 3 is connected with the bar 2 of exerting oneself and constitutes leverage by fulcrum 3a, and fulcrum 3a and valve body 7 are connected.Working principle of the present invention: automatic balancing unit is vertically laid as shown.When hanging with weight on the hook 1, downward weight opens air feed valve port 15 by the bar 2 of exerting oneself, equalizing piston 5 and valve rod 9, inflate to secondary pressure mouth A by air supply opening P, the pressure that feed back chamber 4 this moment also raises, when the pressure in secondary pressure mouth A and the feedback chamber 4 reaches the needed pressure of balance, move on the equalizing piston 5 and close air feed valve port 15, keep the balance pressure of secondary pressure mouth A and reach balance; During load weight on alleviating hook 1, the pressure of feedback chamber 4 makes to move on equalizing piston 5 and the valve rod 9 exhaust valve port 17 is opened, by secondary pressure mouth A to relief opening R exhaust, pressure in secondary pressure mouth A and the feedback chamber 4 descends, when the pressure in secondary pressure mouth A and the feedback chamber 4 reaches the needed pressure of balance again, exhaust valve port 15 is closed, and reaches new balance.Therefore, when being connected with the load of Different Weight on the bar 2 of exerting oneself, this automatic balancing unit can guarantee that the pressure of secondary pressure mouth A adapts with it automatically.When operating grip 3 downwards the time, spool moves up with respect to valve body exhaust valve port 17 is opened, and the pressure of secondary pressure mouth A descends; When operating grip 3 made progress, spool moved down with respect to valve body air feed valve port 15 is opened, and the pressure of secondary pressure mouth A rises.Therefore, move downward or upward, just can destroy aforesaid autobalance state and make the pressure of secondary pressure mouth A be below or above balance pressure by making operating grip 3.Have only when operating grip 3 is in meta, just realize aforesaid autobalance again.Structure of the present invention as shown in Figure 1 and Figure 2, primary valve part is identical among Fig. 1, Fig. 2, the structure of Fig. 1 has back pressure cavity, adjust the back pressure cavity internal pressure with reduction valve, thereby balance valve weight, Fig. 2 is without back pressure cavity, back pressure cavity is led to atmosphere, and valve weight falls by the back pressure spring balancing.When valve body is heavier, use structure shown in Figure 1, less when light when valve body, use structure shown in Figure 2.
The present invention can be applied to gas equilibrium formula force aid system and other need to adapt to automatically on the Force control system of load variations.Owing to only use this controller can realize the detection of load and the automatic adjustment of pressure, thus be one cheaply, product that reliability is high, its application prospect is very big.The present invention has following three advantages:
1. can automatically detect the weight of load, thereby provide suitable pressure at secondary pressure mouth A.This compares with the mode of using force transducer in the past, has simple, reliable and need not second kind of energy advantages such as (power supplys).
2. easy to operate.When pressing the preceding method operation, only need overcome the power of the Returnning spring of carrying the dynamic formula spool, so steering force is very little with operating grip; And when the unclamp operation handle, because equalizing piston is bigger, can promptly reset, restore balance.
3. carrying the dynamic formula outlet valve has bigger conveyance capacity, therefore, when losing weight suddenly, exhaust quickly, thus reach new balance apace.
Fig. 1 is a gas backpressure formula automatic balancing unit principle assumption diagram of the present invention;
Fig. 2 is a spring back pressure type automatic balancing unit principle assumption diagram of the present invention;
Fig. 3 is the system circuit schematic diagram of the embodiment of the invention.
Embodiment: Fig. 3 has provided the automatic balance type force aid system that utilizes Fig. 1 or principle shown in Figure 2 to constitute.Automatic balancing unit 38 links to each other with the piston rod of balance cylinder 30 by rope 32 and sheave block 33,35, the hook 1 of automatic balancing unit 38 hangs with weight 28, pressurized gas enters automatic balancing unit 38 by supply air line 31, and secondary pressure enters the rod chamber of balance cylinder through secondary pressure pipe 29.This system can be automatically fallen the weight balancing of load 28, just can move up and down weight very like a cork by manipulation operations handle 3.
Claims (3)
1. automatic balancing unit, it is characterized in that: carry dynamic formula outlet valve [17] and carry dynamic formula steam supply valve [15] and be installed in the main valve chamber symmetrically up and down, Returnning spring [18] is installed in to be carried in the dynamic formula outlet valve spool [17b], carry dynamic formula outlet valve spool [17b] and carry between the dynamic formula steam supply valve spool [15b] valve rod [9] that has a boss by the centre center hole by two spools and connect, equalizing piston [5] is rigidly connected with valve rod [9], back pressure chamber [6] is arranged at the top of equalizing piston [5], feedback chamber [4] is arranged at the bottom of equalizing piston [5], feedback chamber [4] links to each other with secondary pressure mouth A by feedback channel [13], equalizing piston [5] is simultaneously rigidly connected with the bar of exerting oneself [2], bar [2] lower end of exerting oneself has a bindiny mechanism [1] to connect load, operating grip [3] is connected with the bar of exerting oneself [2] and constitutes leverage by fulcrum [3a], and fulcrum [3a] is connected with valve body [7].
2. balace weight according to claim 1 is characterized in that: spool [17b], [15b] can adopt slide-valve structure.
3. balace weight according to claim 1 is characterized in that: equalizing piston [5] can be placed on the middle part or the top of valve rod [9] and come actuate valve stem [9].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115830A CN1084291C (en) | 1997-08-20 | 1997-08-20 | Arrangement for providing automatic damping adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115830A CN1084291C (en) | 1997-08-20 | 1997-08-20 | Arrangement for providing automatic damping adjustment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1208827A true CN1208827A (en) | 1999-02-24 |
| CN1084291C CN1084291C (en) | 2002-05-08 |
Family
ID=5173473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97115830A Expired - Fee Related CN1084291C (en) | 1997-08-20 | 1997-08-20 | Arrangement for providing automatic damping adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1084291C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112203804A (en) * | 2018-05-29 | 2021-01-08 | 泰克纳股份公司 | Balancer for tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2180851Y (en) * | 1993-12-23 | 1994-10-26 | 陶朱秋 | Pressure controlling valve |
| CN2211528Y (en) * | 1994-07-30 | 1995-11-01 | 陈小来 | Automatic pressure regulating valve with by pass |
| CN2235541Y (en) * | 1995-08-22 | 1996-09-18 | 杨永祥 | Pressure modulation valve |
-
1997
- 1997-08-20 CN CN97115830A patent/CN1084291C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112203804A (en) * | 2018-05-29 | 2021-01-08 | 泰克纳股份公司 | Balancer for tool |
| CN112203804B (en) * | 2018-05-29 | 2023-08-22 | 泰克纳股份公司 | Balancer for tool |
| US11850723B2 (en) | 2018-05-29 | 2023-12-26 | Tecna S.P.A. | Balancer for tools |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084291C (en) | 2002-05-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |