CN112576672B - Low-resilience-quantity return-stroke controllable nitrogen spring and operation method - Google Patents
Low-resilience-quantity return-stroke controllable nitrogen spring and operation method Download PDFInfo
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- CN112576672B CN112576672B CN202011609161.2A CN202011609161A CN112576672B CN 112576672 B CN112576672 B CN 112576672B CN 202011609161 A CN202011609161 A CN 202011609161A CN 112576672 B CN112576672 B CN 112576672B
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 26
- 230000006835 compression Effects 0.000 claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 78
- 238000007599 discharging Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0281—Details
Abstract
The invention discloses a return stroke controllable nitrogen spring with low rebound quantity, which belongs to the technical field of elastic element products and comprises a working cylinder, a piston rod and an air path, and is characterized in that an inner cavity of the working cylinder is divided into a 1# cavity, a 2# cavity and a 3# cavity, wherein the 1# cavity is a rod cavity, the 2# cavity is a rodless cavity, the 1# cavity and the 2# cavity are separated by the piston, and the volumes of the 1# cavity and the 2# cavity change along with the change of the compression stroke of the spring; the 3# chamber is a fixed chamber, the 3# chamber can be designed into volumes with different sizes, and the larger the volume is, the better the effect of eliminating the rebound quantity is; the 1# chamber, the 2# chamber and the 3# chamber are communicated through an air passage, and a control valve for controlling the flow direction of nitrogen is arranged on the air passage to control the connection and disconnection of the air passage; the piston and the piston rod are connected into a whole, and do linear reciprocating motion along with the compression or ejection stroke of the spring in the working cylinder.
Description
Technical Field
The invention relates to the technical field of elastic element products, in particular to a return stroke controllable nitrogen spring with low rebound quantity and an operation method.
Background
The nitrogen spring is a novel elastic element taking high-pressure nitrogen as a working medium, and has the advantages of small volume, smooth elastic-stroke curve, long working stroke, no need of pre-tightening, flexible installation mode and the like, so that the nitrogen spring gradually replaces conventional elastic elements such as metal springs, elastic rubber, air cushions and the like in a plurality of fields, and particularly in the field of mould industry, the replacement is more thorough and obvious.
In recent years, as the mold rapidly advances toward precision, high efficiency, long life, and the like, more new demands are being made on the performance of nitrogen springs. For example: a certain secondary drawing die designed for meeting the requirement of forming a precise complex stamping part requires that a nitrogen spring can be kept in a compressed state according to the time specified by a stamping process during die opening, namely: a "return controllable" locked state; the nitrogen spring with controllable return stroke can be popularized and applied in various fields such as mechanical manufacturing, automobiles, electronic appliances and the like. The common nitrogen spring can not meet the requirements because the return stroke is uncontrollable, but the return stroke controllable nitrogen spring in the prior art has large rebound quantity generally, or the built rebound removing system is complex, so that the operation reliability is reduced, the price is high, and the popularization and the use are influenced.
In order to meet the market demands, development of a novel return controllable nitrogen spring which can overcome the defects and is stable and reliable in operation is imperative.
Disclosure of Invention
The invention aims to solve the problems and provides a return stroke controllable nitrogen spring with low rebound quantity, which adopts the following technical scheme: the return stroke controllable nitrogen spring with the low rebound quantity comprises a working cylinder, a piston rod and an air passage, and is characterized in that an internal cavity of the working cylinder is divided into a 1# cavity, a 2# cavity and a 3# cavity, wherein the 1# cavity is a rod cavity, the 2# cavity is a rodless cavity, the 1# cavity and the 2# cavity are separated by the piston, and the volumes of the 1# cavity and the 2# cavity are changed along with the change of the compression stroke of the spring; the 1# chamber, the 2# chamber and the 3# chamber are communicated through an air passage, and a control valve for controlling the flow direction of nitrogen is arranged on the air passage to control the connection and disconnection of the air passage; the piston and the piston rod are connected into a whole, and do linear reciprocating motion along with the compression or ejection stroke of the spring in the working cylinder.
Further, the 3# chamber is a fixed chamber, and the 3# chamber can be designed into volumes with different sizes, and the larger the volume is, the better the effect of eliminating the rebound quantity is.
Further, two branch gas paths are arranged between the 1# chamber and the 2# chamber, wherein the first branch gas path is a one-way gas path which enables gas in the 2# chamber to flow into the 1# chamber through a one-way valve; the second branch gas path is a throttling control gas path which enables gas between the 1# chamber and the 2# chamber to flow or cut off slowly through a control valve I, and the throttling gas path can avoid the excessively high energy releasing speed of high-pressure nitrogen in the chamber.
Furthermore, a control gas path which enables the two chambers to be communicated or cut off through a second control valve is arranged between the 2# chamber and the 3# chamber.
Furthermore, an inflation and deflation gas path which is communicated or disconnected with the internal gas path through an inflation and deflation valve is arranged between the No.2 chamber and the No. 3 chamber, one end of the inflation and deflation valve is connected in the gas path, and the other end of the inflation and deflation valve is used as an interface for inflating or deflating the nitrogen spring, so that the spring can be inflated or deflated conveniently.
In addition, the invention also discloses an operation control method of the return stroke controllable nitrogen spring with low rebound quantity, which comprises the following steps:
A. filling: the nitrogen spring is filled with nitrogen through the charging and discharging valve according to the pressure P 0 required by use, the first control valve and the second control valve are in the on position, the 1# chamber, the 2# chamber and the 3# chamber are kept communicated, the piston rod is completely ejected out of the working cylinder under the action of high-pressure nitrogen in the interior, and the nitrogen spring is in an uncompressed natural state;
B. Compression preparation: before the outside applies pressure to the spring through the piston rod, the first control valve cuts off the throttle gas paths of the No.1 chamber and the No.2 chamber; the second control valve is disconnected, so that the 3# chamber is closed with a certain amount of compressed gas in an initial state;
C. compression energy storage: the external pressing block applies pressure F to the spring through the piston rod, the piston rod drives the piston to enable gas in the # chamber to flow into the 1# chamber through the one-way valve, meanwhile, the gas in the 1# chamber and the gas in the 2# chamber are compressed to store energy, and the pressure in the chamber rises along with the increase of the compression stroke;
D. locking: when the piston rod is pressed to the bottom dead center position and before the external force F is removed,
Firstly, after the piston rod is balanced at the bottom dead center position, the one-way valve automatically cuts off the gas path between the No. 1 chamber and the No. 2 chamber;
Secondly, the second control valve is connected with a gas path between the 2# chamber and the 3# chamber, so that a small amount of gas remains in the 2# chamber, the pressure of the gas is P t, the volume is V 2t, the gas is mixed with the initial gas sealed in the 3# chamber, the pressure of the gas is P 0, the volume is V 3, the pressure of the gas in the 2# chamber is rapidly reduced to P t', the pressure is P t'＝(PtV2t+P0V3)/(V2t+V3), and the volume is V 2t;
third, the second control valve disconnects the gas path between the 2# chamber and the 3# chamber.
At this time, the external force F acting on the piston rod is removed, and after balancing, the piston rod of the spring is locked at the original compression position, the external force and the force of the spring to the pressing block are 0, and the displacement l of the piston rod ejected reversely, i.e. the rebound amount, can obtain the effects shown in table 1.
TABLE 1 relationship between rebound amount and 3# chamber volume V 3, 2# chamber volume V 2t at bottom dead center for piston
E. Backhaul: when the outside needs the spring to do external work, a return instruction is sent out, the control valve is connected with a throttling gas path between the No. 1 chamber and the No. 2 chamber, gas in the No. 1 chamber slowly flows into the No. 2 chamber, the compressed gas slowly ejects the piston rod to do external work by the elasticity F', and the spring slowly releases accumulated energy; when the piston rod is ejected to the upper dead point position, the pressure in the cavity is reduced to P 0 ', the accumulated energy is completely released, and in the return process, the second control valve is also connected with a gas path between the No. 2 cavity and the No. 3 cavity, and the pressure in the No. 3 cavity is also reduced to P 0';
F. And (3) circularly working: and (3) circularly working according to the steps B-E. As shown in fig. 7, the control sequence is shown in fig. 7, where t 0 is the compression start time, t 1 is the time when the compression is just performed to the bottom dead center, t 2 is the locking time before the external force is removed, t 3 is the time when the pressing block 5 returns to the top dead center, t 4 is the return start time, t 5 is the time when the press returns to the initial position, and t 6 is the time when the spring returns to the top dead center.
Further, in the step B, the pressure of the compressed gas in the initial state of the closed 3# chamber is P 0, and the volume is V 3.
Further, in the step C, when the piston rod is pressed to the bottom dead center position, the pressure in the cavity reaches a maximum value P t, and the energy accumulated by the spring also reaches a maximum value.
Furthermore, in the return process of step E, the second control valve is connected to the gas path between the 2# chamber and the 3# chamber, so that the gas pressure in the 3# chamber is reduced to P 0'.
Compared with the prior art, the return-stroke controllable nitrogen spring and the operation method have the following beneficial effects: firstly, a return stroke controllable nitrogen spring with a 3# cavity for controlling the rebound quantity is added, a complex rebound eliminating system is not required to be formed, the structure is simple, and the site installation is convenient; secondly, the rebound quantity of the return controllable nitrogen spring is low, a complex rebound removing system is not required to be constructed, the whole cost is prevented from being increased, and the running reliability is further ensured; thirdly, a simple and reliable operation control method of the return stroke controllable nitrogen spring is provided, and the method has good popularization and application values.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
FIG. 1 is a schematic illustration of the natural state of a spring after the completion of the filling of an embodiment of the return controllable nitrogen spring;
FIG. 2 is a schematic diagram showing the state before external force is removed from the spring in the initial state and the compression to the bottom dead center in the embodiment of the return-stroke controllable nitrogen spring;
FIG. 3 is a schematic diagram of a locked state of an embodiment of the return controllable nitrogen spring;
FIG. 4 is a schematic view of the return stroke initiation state of the embodiment of the present return stroke controllable nitrogen spring;
FIG. 5 is a schematic view of the middle state of the return stroke of the embodiment of the return stroke controllable nitrogen spring;
FIG. 6 is a schematic diagram illustrating the return to top dead center state of an embodiment of the return controllable nitrogen spring;
FIG. 7 is a timing diagram of the cyclical operation control of the present embodiment of the return controllable nitrogen spring.
The text labels in the figures are expressed as: 1. a working cylinder; 11. a #1 chamber; 12. a # 2 chamber; 13. a 3# chamber; 2. a piston; 3. a piston rod; 4. an air path; 41. a one-way valve; 42. throttling the airway; 43. a first control valve; 44. a second control valve; 45. a gas charging and discharging valve; 5. and (5) briquetting.
Detailed Description
The invention is further illustrated by the following examples.
The low-resilience-quantity return-stroke controllable nitrogen spring comprises a working cylinder 1, a piston 2, a piston rod 3 and a gas circuit 4, and is characterized in that the cavity in the working cylinder 1 is divided into a 1# cavity 11, a 2# cavity 12 and a 3# cavity 13, wherein the 1# cavity 11 is a rod cavity, the 2# cavity 12 is a rodless cavity, the 1# cavity 11 and the 2# cavity 12 are separated by the piston 2, and the volumes of the 1# cavity 11 and the 2# cavity change along with the change of the compression stroke of the spring; the 1# chamber 11, the 2# chamber 12 and the 3# chamber 13 are communicated through an air channel 4, and a control valve for controlling the flow direction of nitrogen is arranged on the air channel 4 to control the on-off of the air channel 4; the piston 2 is connected with the piston rod 3 into a whole, and linearly reciprocates in the working cylinder 1 along with the compression or ejection stroke of the spring.
Preferably, as shown in fig. 1-6, the 3# chamber 13 is a fixed chamber, and the 3# chamber 13 can be designed to have different volumes and the larger the volume, the better the effect of eliminating the rebound amount.
Preferably, as shown in fig. 1-6, two branch air paths are arranged between the 1# chamber 11 and the 2# chamber 12, wherein the first branch air path is a unidirectional air path for enabling the air in the 2# chamber 12 to flow into the 1# chamber through the unidirectional valve 41; the second branch gas path is a throttling control gas path which enables gas between the 1# chamber 11 and the 2# chamber 12 to flow or cut off slowly through the first control valve 43, and the throttling gas path can avoid the excessively high energy releasing speed of the high-pressure nitrogen in the cavity.
Preferably, as shown in fig. 1-6, a control gas path is provided between the 2# chamber 12 and the 3# chamber 13, which enables or cuts off the gas communication between the two chambers through a second control valve 44.
Preferably, as shown in fig. 1-6, an air charging/discharging air path for connecting or disconnecting the outside with the internal air path through an air charging/discharging valve 45 is arranged between the 2# chamber 12 and the 3# chamber 13, one end of the air charging/discharging valve 45 is connected in the air path, and the other end is used as an interface for charging or discharging air to the nitrogen spring, so that the spring can be conveniently charged or discharged.
In the embodiment, a piston rod 3 of the return controllable nitrogen spring is pressed into a working cylinder under the action of external force, so that the spring is compressed and stored; when compression reaches a stroke bottom dead center, the spring energy storage reaches the maximum value, the piston rod 3 is locked, and the compression state is still maintained when the external force is removed; after the return command is obtained, the piston rod returns slowly to release energy. The specific operation control method comprises the following steps:
A. Filling: the nitrogen spring is filled with nitrogen through the charging and discharging valve 45 according to the pressure P 0 required by use, the first control valve 43 and the second control valve 44 are in the on position, the 1# chamber 11, the 2# chamber 12 and the 3# chamber 13 are kept communicated, the piston rod 3 is completely ejected out of the working cylinder 1 under the action of high-pressure nitrogen in the interior, and the nitrogen spring is in an uncompressed natural state;
B. Compression preparation: before the outside applies pressure to the spring through the piston rod, the first control valve 43 disconnects the throttle gas paths of the No.1 chamber 11 and the No. 2 chamber 12; the second control valve 44 is disconnected, so that the 3# chamber 13 is closed with a certain amount of compressed gas in an initial state;
C. Compression energy storage: the external pressing block 5 applies pressure F to the spring through the piston rod 3, the piston rod 3 drives the piston 2 to enable gas in the No. 2 chamber 12 to flow into the No. 1 chamber 11 through the one-way valve 41, and meanwhile, the gas in the No. 1 chamber 11 and the No. 2 chamber 12 is compressed to store energy, and the pressure in the chamber rises along with the increase of the compression stroke;
D. Locking: when the piston rod 3 is pressed to the bottom dead centre position and before the external force F is removed,
Firstly, after the piston rod 3 is balanced at the bottom dead center position, the check valve 41 automatically cuts off the gas path between the 1# chamber 11 and the 2# chamber 12;
Secondly, the second control valve 44 is connected with the gas path between the 2# chamber 12 and the 3# chamber 13, so that a small amount of gas remains in the 2# chamber, the pressure of the gas is P t, the volume is V 2t, the gas is mixed with the initial gas sealed in the 3# chamber, the pressure of the gas is P 0, the volume is V 3, the pressure of the gas in the 2# chamber is rapidly reduced to P t', the pressure is P t'＝(PtV2t+P0V3)/(V2t+V3), and the volume is V 2t;
Third, control valve two 44 disconnects the air path between chamber 2# 12 and chamber 3# 13.
At this time, the external force F acting on the piston rod 3 is removed, and after balancing, the piston rod 3 of the spring is locked in the original compressed position, the external force and the force of the spring to the pressing block 5 are 0, and the displacement l of the piston rod 3 ejected reversely, i.e., the rebound amount, can obtain the effects shown in table 1.
TABLE 1 relationship between rebound amount and 3# chamber volume V 3, 2# chamber volume V 2t at bottom dead center for piston
E. Backhaul: when the outside needs a spring to do external work, a return instruction is sent out, a first control valve 43 is connected with a throttling air passage between a 1# chamber 11 and a 2# chamber 12, air in the 1# chamber slowly flows into the 2# chamber, the compressed air slowly ejects a piston rod 3 to do external work through elasticity F', and the spring slowly releases accumulated energy; when the piston rod 3 is ejected to the upper dead point position, the pressure in the cavity is reduced to P 0 ', the accumulated energy is completely released, and in the return process, the second control valve 44 also switches on the gas path between the No. 2 cavity 12 and the No. 3 cavity 13, and the pressure in the No. 3 cavity 13 is also reduced to P 0';
F. And (3) circularly working: and (3) circularly working according to the steps B-E. As shown in fig. 7, the control sequence is shown in fig. 7, where t 0 is the compression start time, t 1 is the time when the compression is just performed to the bottom dead center, t 2 is the locking time before the external force is removed, t 3 is the time when the pressing block 5 returns to the top dead center, t 4 is the return start time, t 5 is the time when the press returns to the initial position, and t 6 is the time when the spring returns to the top dead center.
Various control instructions related in the operation control method of the embodiment are on-off binary logic signals, and the control method is simple, convenient and reliable.
Preferably, in the step B, the pressure of the compressed gas in the initial state of the 3# chamber 13 is P 0 and the volume is V 3.
Preferably, in the step C, when the piston rod 3 is pressed to the bottom dead center position, the pressure in the cavity reaches a maximum value P t, and the energy accumulated by the spring also reaches a maximum value.
Preferably, during the return process of step E, the second control valve 44 switches on the gas path between the 2# chamber 12 and the 3# chamber 13, so that the gas pressure in the 3# chamber also drops to P 0'.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been described herein and the above examples have been presented only to assist in understanding the method of the present invention and its core ideas; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (5)
1. The return stroke controllable nitrogen spring with the low rebound quantity comprises a working cylinder (1), a piston (2), a piston rod (3) and an air path (4), and is characterized in that an inner cavity of the working cylinder (1) is divided into a 1# cavity (11), a 2# cavity (12) and a 3# cavity (13), wherein the 1# cavity (11) is a rod cavity, the 2# cavity (12) is a rodless cavity, the 1# cavity (11) and the 2# cavity (12) are separated by the piston (2), and the volumes of the 1# cavity (11) and the 2# cavity (12) change along with the change of the compression stroke of the spring; the 1# chamber (11), the 2# chamber (12) and the 3# chamber (13) are communicated through an air passage (4), and a control valve for controlling the flow direction of nitrogen is arranged on the air passage (4) to control the connection and disconnection of the air passage (4); the piston (2) is connected with the piston rod (3) into a whole, and linearly reciprocates in the working cylinder (1) along with the compression or ejection stroke of the spring;
the 3# chamber (13) is a fixed chamber, and the 3# chamber (13) is designed to be different in size and has the larger volume, so that the effect of eliminating the rebound quantity is better;
Two branch gas paths are arranged between the No. 1 chamber (11) and the No.2 chamber (12), wherein the first branch gas path is a one-way gas path which enables gas in the No.2 chamber (12) to flow into the No. 1 chamber through a one-way valve (41); the second branch gas path is a throttling control gas path which enables gas between the 1# chamber (11) and the 2# chamber (12) to flow or cut off at a low speed through a first control valve (43), and the throttling control gas path can avoid the excessively high energy releasing speed of high-pressure nitrogen in the chamber; a control gas path which enables the two chambers to be communicated or cut off through a control valve II (44) is arranged between the No.2 chamber (12) and the No. 3 chamber (13);
An air charging and discharging air passage which is communicated or disconnected with the internal air passage through an air charging and discharging valve (45) is arranged between the No. 2 chamber (12) and the No. 3 chamber (13), one end of the air charging and discharging valve (45) is connected in the air passage, and the other end of the air charging and discharging valve is used as an interface for charging or discharging the nitrogen spring, so that the spring can be conveniently charged or discharged.
2. The control method of the low resilience controlled nitrogen spring according to claim 1, comprising the steps of:
A. Filling: the nitrogen spring is filled with nitrogen through a charging and discharging valve (45) according to the pressure P 0 required by use, the first control valve (43) and the second control valve (44) are in a connection position, the 1# chamber (11), the 2# chamber (12) and the 3# chamber (13) are kept communicated, the piston rod (3) is completely ejected out of the working cylinder (1) under the action of high-pressure nitrogen in the interior, and the nitrogen spring is in an uncompressed natural state;
B. Compression preparation: before the outside applies pressure to the spring through the piston rod, the first control valve (43) cuts off the throttle gas paths of the No.1 chamber (11) and the No.2 chamber (12); the second control valve (44) is disconnected, so that the 3# chamber (13) is closed with a certain amount of compressed gas in an initial state;
C. Compression energy storage: the external pressing block (5) applies pressure F to the spring through the piston rod (3), the piston rod (3) drives the piston (2) to enable gas in the (2) # chamber (12) to flow into the 1# chamber (11) through the one-way valve (41), and meanwhile, the gas in the 1# chamber (11) and the 2# chamber (12) is compressed to store energy, and the pressure in the chamber rises along with the increase of the compression stroke;
D. locking: when the piston rod (3) is pressed to the bottom dead center position and before the external force F is removed,
Firstly, after the piston rod (3) is balanced at the bottom dead center position, a one-way valve (41) automatically cuts off a gas path between a No. 1 chamber (11) and a No. 2 chamber (12);
Secondly, a second control valve (44) is connected with a gas path between the 2# chamber (12) and the 3# chamber (13) to enable a small amount of gas remained in the 2# chamber, wherein the pressure of the gas is P t, the volume of the gas is V 2t, the gas is mixed with the initial gas sealed in the 3# chamber, the pressure of the gas is P 0, the volume of the gas is V 3, the gas pressure in the 2# chamber is rapidly reduced to P t', the pressure of the gas is P t'＝(PtV2t+P0V3)/(V2t+V3), and the volume of the gas is V 2t;
thirdly, a second control valve (44) cuts off the gas path between the No.2 chamber (12) and the No.3 chamber (13);
At the moment, the external force F acting on the piston rod (3) is removed, after balance, the piston rod (3) of the spring is locked at the original compression position, and the acting force of the outside and the spring on the pressing block (5) is 0;
E. Backhaul: when the outside needs a spring to do external work, a return instruction is sent out, a first control valve (43) is connected with a throttling gas path between a 1# chamber (11) and a 2# chamber (12), gas in the 1# chamber slowly flows into the 2# chamber, compressed gas slowly ejects a piston rod (3) to do external work by elastic force F', and the spring slowly releases accumulated energy; when the piston rod (3) is ejected to the upper dead point position, the pressure in the cavity is reduced to P 0 ', the accumulated energy is completely released, and in the return process, the control valve II (44) is also connected with a gas path between the No. 2 cavity (12) and the No. 3 cavity (13), and the pressure in the cavity of the No. 3 cavity (13) is also reduced to P 0';
F. and (3) circularly working: and (3) circularly working according to the steps B-E.
3. The method for controlling a low resilience backstroke controllable nitrogen spring according to claim 2, wherein the pressure of the compressed gas in the initial state of the closed 3# chamber (13) in the step B is P 0 and the volume is V 3.
4. A control method of a low resilience controlled nitrogen spring according to claim 2, wherein in said step C, when the piston rod (3) is pressed to the bottom dead center position, the pressure in the chamber reaches a maximum value P t, and the energy accumulated by the spring also reaches a maximum value.
5. The method according to claim 2, wherein the second control valve (44) is configured to switch on the gas path between the No. 2 chamber (12) and the No. 3 chamber (13) during the return process in step E, so that the gas pressure in the No. 3 chamber is reduced to P 0'.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1202039A (en) * | 1983-03-31 | 1986-03-18 | Gerhard Reichert | Gas spring with pressure loss safety |
| JPH0821473A (en) * | 1994-04-14 | 1996-01-23 | Marujiyun Juko Kk | Free lock cylinder equipped with pressurizing pump means |
| JP2011163386A (en) * | 2010-02-05 | 2011-08-25 | Psc Kk | Gas-pressure actuator system |
| CN103253100A (en) * | 2013-05-23 | 2013-08-21 | 江苏大学 | Booster cavity and high-pressure cavity integrated type closed-loop gas path air suspension system |
| CN103423364A (en) * | 2013-08-12 | 2013-12-04 | 江苏大学 | Hydraulic damper with adjustable damping |
| CN109891119A (en) * | 2016-11-04 | 2019-06-14 | Ｋｙｂ株式会社 | Cylinder apparatus |
| CN212004067U (en) * | 2020-04-26 | 2020-11-24 | 重庆特力普尔机械设备有限公司 | Gas accuse delay unit based on nitrogen gas spring |
| CN112576671A (en) * | 2020-12-30 | 2021-03-30 | 邵阳兴达精密机械制造有限公司 | Return stroke controllable nitrogen spring and operation control method |
| CN214036645U (en) * | 2020-12-30 | 2021-08-24 | 邵阳兴达精密机械制造有限公司 | Return stroke controllable nitrogen spring with low rebound quantity |
| CN214248109U (en) * | 2020-12-30 | 2021-09-21 | 邵阳兴达精密机械制造有限公司 | Controllable type nitrogen spring of return stroke |
-
2020
- 2020-12-30 CN CN202011609161.2A patent/CN112576672B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1202039A (en) * | 1983-03-31 | 1986-03-18 | Gerhard Reichert | Gas spring with pressure loss safety |
| JPH0821473A (en) * | 1994-04-14 | 1996-01-23 | Marujiyun Juko Kk | Free lock cylinder equipped with pressurizing pump means |
| JP2011163386A (en) * | 2010-02-05 | 2011-08-25 | Psc Kk | Gas-pressure actuator system |
| CN103253100A (en) * | 2013-05-23 | 2013-08-21 | 江苏大学 | Booster cavity and high-pressure cavity integrated type closed-loop gas path air suspension system |
| CN103423364A (en) * | 2013-08-12 | 2013-12-04 | 江苏大学 | Hydraulic damper with adjustable damping |
| CN109891119A (en) * | 2016-11-04 | 2019-06-14 | Ｋｙｂ株式会社 | Cylinder apparatus |
| CN212004067U (en) * | 2020-04-26 | 2020-11-24 | 重庆特力普尔机械设备有限公司 | Gas accuse delay unit based on nitrogen gas spring |
| CN112576671A (en) * | 2020-12-30 | 2021-03-30 | 邵阳兴达精密机械制造有限公司 | Return stroke controllable nitrogen spring and operation control method |
| CN214036645U (en) * | 2020-12-30 | 2021-08-24 | 邵阳兴达精密机械制造有限公司 | Return stroke controllable nitrogen spring with low rebound quantity |
| CN214248109U (en) * | 2020-12-30 | 2021-09-21 | 邵阳兴达精密机械制造有限公司 | Controllable type nitrogen spring of return stroke |
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| CN112576672A (en) | 2021-03-30 |
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