CN114838073B - Spring device with continuously adjustable spring characteristic - Google Patents

Spring device with continuously adjustable spring characteristic Download PDF

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Publication number
CN114838073B
CN114838073B CN202210560712.3A CN202210560712A CN114838073B CN 114838073 B CN114838073 B CN 114838073B CN 202210560712 A CN202210560712 A CN 202210560712A CN 114838073 B CN114838073 B CN 114838073B
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piston
adjusting
spring
plate
air chamber
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CN114838073A (en
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高峰
高强
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Nanjing Suntrust Machinery Co ltd
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Nanjing Suntrust Machinery Co ltd
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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
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/041—Wound springs with means for modifying the spring characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/10—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor in which the servomotor position is a function of the pressure also pressure regulators as operating means for such systems, the device itself may be a position indicating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention relates to a spring device with continuously adjustable spring characteristics, wherein a spiral spring is connected with a second adjusting device in parallel and then connected with a first adjusting device in series, the angle of a first piston adjusting plate in the first adjusting device can be adjusted through a controller, so that the elastic coefficient of the whole spring device is changed, and the elastic coefficient of the continuously adjustable spring device can be obtained through continuous adjustment of the angle of the first piston adjusting plate; in addition, the elastic coefficient of the spring device can be adjusted by additionally changing the elastic coefficient of the first adjusting device through adjusting the gas pressure in the first cylinder, and the elastic coefficient of the second adjusting device can be additionally changed through adjusting other pressure in the second adjusting device, so that the elastic coefficient of the whole spring device can be continuously adjusted in real time, and a large adjusting range and a large space are provided, and complex and variable vibration reduction requirements can be met and met in very timely.

Description

Spring device with continuously adjustable spring characteristic
Technical Field
The invention relates to the field of vibration reduction, in particular to a spring, and particularly relates to a spring device with continuously adjustable spring characteristics.
Background
In the mechanical industry or the electromechanical industry, a large number of devices need to use a vibration damping device to buffer and absorb vibration and impact generated in the devices, so that the devices are prevented from being influenced by the vibration and the impact, or the influence of the vibration and the impact generated by the devices on the outside is isolated.
The coil spring is a most commonly used damping device, and is usually made by winding a wire made of spring steel, and has a predetermined spring rate characteristic according to the diameter or cross-sectional area of the wire, the outer diameter of the spring, and the material characteristics of the spring steel. The spring stiffness is also called as spring constant and spring coefficient, and is used to represent the relationship between the deformation of the coil spring and the force applied to the coil spring within the elastic deformation range when the coil spring is compressed or stretched. After the coil springs are manufactured, the spring characteristics of the coil springs are fixed, and therefore, the coil springs with the corresponding spring characteristics are usually selected according to the damping requirements of the equipment to meet the damping requirements.
In the use process of the equipment, under various conditions, the vibration and impact conditions of the equipment are unstable and fixed, and various different and complicated vibration conditions can occur under different working conditions, which can put strict and harsh requirements on vibration reduction. In order to satisfy the complicated and variable vibration damping conditions, a plurality of coil springs with different spring characteristics are generally configured, and the vibration damping requirements are satisfied through a combined configuration, so that the vibration damping device is abnormally complicated and large, and the vibration damping performance cannot well meet the requirements of equipment.
Therefore, it is an urgent technical problem in the art to develop a vibration damping device capable of satisfying complex and variable vibration damping requirements.
Disclosure of Invention
In order to solve the technical problem, the invention provides a spring device with continuously adjustable spring characteristics, which comprises a spiral spring and a first adjusting device, wherein a first end of the spiral spring is connected with a load, and a second end of the spiral spring abuts against the first adjusting device, wherein the first adjusting device comprises a first cylinder, a first air chamber and a first piston, the first piston is accommodated in the first cylinder and can move in the first cylinder, the first piston and part of parts of the first cylinder enclose the first air chamber, and gas is accommodated in the first air chamber; the first piston comprises a first piston shell, a first piston adjusting plate and a first piston adjusting plate adjusting device, the first piston shell can move in the first air cylinder, the first end of the first piston adjusting plate is hinged with the first piston shell, the first piston adjusting plate can rotate around the first end of the first piston adjusting plate, the first piston adjusting plate adjusting device comprises a first motor and a first lead screw, the first lead screw is connected with the first motor and can convert the rotary motion of the first motor into the linear displacement of the first lead screw, the first motor is fixed on the first piston shell, and one end of the first lead screw is connected with the first piston adjusting plate; the spring device further comprises a first piston supporting plate and a first limiting plate, wherein the first limiting plate is arranged at a position opposite to the first piston and can stop the movement of the first piston shell, the first end of the first piston supporting plate abuts against the first piston adjusting plate and can slide relative to the first piston adjusting plate, the second end of the first piston supporting plate abuts against the first limiting plate and can slide relative to the first limiting plate, and the second end of the spiral spring abuts against the first piston supporting plate, so that the first piston supporting plate can slide between the first piston adjusting plate and the first limiting plate under the action of force of the spiral spring and/or the first piston adjusting plate; the spring device also comprises a controller which is connected with the first motor so as to adjust the rotation angle of the first piston adjusting plate.
Further, one end of the first screw rod is hinged with the first piston adjusting plate, preferably, the middle of the first piston adjusting plate.
Further, the first piston adjusting plate is provided with a guide groove, the first piston supporting plate is provided with a guide rail, and the guide rail is accommodated in the guide groove.
Further, the first piston support plate has a first plane abutting against the first limit plate, the first limit plate has a second plane supporting the first piston support plate, the first plane and the second plane are relatively abuttingly coupled and thereby guide movement of the first piston support plate.
Further, the spring device further comprises a first piston adjusting plate angle sensor for detecting a rotation angle of the first piston adjusting plate, and the first piston adjusting plate angle sensor is connected with the controller.
The spring device further comprises a first air chamber pressure sensor, an adjustable pressure air supply device, a first air chamber air inlet pipeline and a first air chamber air inlet pipeline adjusting valve, wherein the adjustable pressure air supply device can output air with different pressures; the adjustable pressure air supply device, the first air chamber pressure sensor and the first air chamber air inlet pipeline adjusting valve are connected to the controller.
Further, the spring device is also provided with a second adjusting device, the second adjusting device is sleeved inside the spiral spring, the second adjusting device comprises a second cylinder, a second piston and a second air chamber, the second piston is accommodated in the second cylinder and can move in the second cylinder, the second piston and part of parts of the second cylinder enclose a second air chamber, and gas is accommodated in the second air chamber; wherein the second piston is capable of supporting a load and sliding in the second cylinder provided on the first piston supporting plate under a force of the load to compress the gas in the second gas chamber.
Furthermore, the second adjusting device is also provided with a second air chamber pressure sensor, a second air chamber air inlet pipeline and a second air chamber air inlet pipeline adjusting valve, the first end of the second air chamber air inlet pipeline is connected with the pressure-adjustable air supply device, the second end of the second air chamber air inlet pipeline is connected with the second air chamber, and the second air chamber air inlet pipeline adjusting valve is arranged on the second air chamber air inlet pipeline and is positioned between the first end and the second end of the second air chamber air inlet pipeline; the second air chamber pressure sensor and the second air chamber air inlet pipeline adjusting valve are connected to the controller.
Furthermore, a first sealing groove is formed in one end, facing the first cylinder, of the first piston shell, and a first sealing ring is installed in the first sealing groove; and a second sealing groove is formed in one end, facing the second cylinder, of the second piston, and a second sealing ring is installed in the second sealing groove.
Further, the spring device has a spring constant K:
Figure 621142DEST_PATH_IMAGE001
wherein K1 is the elastic coefficient of the first adjusting device, K2 is the elastic coefficient of the second adjusting device,
Figure 699956DEST_PATH_IMAGE002
theta is the elastic coefficient of the helical spring, theta is the angle of the first piston adjusting plate to the vertical, theta is preferably taken from 10 DEG to 60 DEG, P1 is the gas pressure in the first adjusting device, P2 is the gas pressure in the second adjusting device, function
Figure 135617DEST_PATH_IMAGE003
As a function of the spring constant of the first regulating device and the gas pressure of the first regulating device
Figure 907264DEST_PATH_IMAGE004
Is the relationship between the spring constant of the second regulating means and the gas pressure of the second regulating means.
The implementation of the invention has the following beneficial effects: according to the spring device, the spiral spring and the first adjusting device are connected in series, the angle of the first piston adjusting plate in the first adjusting device can be adjusted through the controller, so that the elastic coefficient of the whole spring device is changed, and the elastic coefficient of the continuously adjustable spring device can be obtained through continuous adjustment of the angle of the first piston adjusting plate; in addition, the spring constant of the spring device can be adjusted by additionally changing the spring constant of the first adjusting device by adjusting the gas pressure in the first cylinder; further, by arranging the second adjusting device which is arranged in parallel with the spiral spring, a series-parallel structure in the spring device is formed, and additionally, the elastic coefficient of the second adjusting device can be changed by adjusting other pressure in the second adjusting device, so that the elastic coefficient of the whole spring device can be continuously adjusted in real time, and a large adjusting range and space are provided, and thus, complicated and diversified vibration reduction requirements can be met and met in time.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a structural view of a spring device of the present invention.
Reference numerals are as follows: 1. a coil spring; 2. a first cylinder; 3. a first air chamber; 4. a first piston housing; 5. a first piston adjustment plate; 6. a first motor; 7. a first lead screw; 8. a first limit plate; 9. a first piston support plate; 10. a second piston; 11. a second cylinder; 12. a pressure-adjustable air supply device; 13. a first plenum inlet conduit; 14. a first air chamber inlet duct regulating valve; 15. a first plenum pressure sensor; 16. a second air chamber inlet duct; a second air chamber inlet duct regulating valve; 18. a second air chamber pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In order to solve the above technical problems, as shown in fig. 1, the present invention provides a spring device with continuously adjustable spring characteristics, which includes a coil spring 1 and a first adjusting device, wherein the coil spring 1 is made of a wire made of spring steel by winding, and after the coil spring 1 is manufactured, the spring characteristics of the coil spring are fixed and cannot be adjusted during use. As shown in fig. 1, the coil spring 1 is cooperatively connected with the first adjusting device in a substantially serial structure, and in a frame in which two elastic members are connected in series, the spring characteristic of the first adjusting device can be adjusted, and thus the spring characteristic of the whole spring device can be adjusted. A first end (e.g., an upper end in fig. 1) of the coil spring 1 is connected to a load, and a second end (e.g., a lower end in fig. 1) of the coil spring 1 abuts against the first adjusting device.
In particular, the first adjusting device comprises a first cylinder 2, a first air chamber 3 and a first piston, the first piston is accommodated in the first cylinder 2 and can move in the first cylinder 2, the first piston and part of the first cylinder 2, in particular the end wall and the side wall of the first cylinder 2 far away from the first piston, enclose the first air chamber 3, and the first air chamber 3 contains gas. Thereby, when a force acts on the first piston, the first piston can be pushed by an external force to compress the gas in the first gas chamber 3, and the gas in the first gas chamber 3 can act as a buffer and damper for the movement of the first piston. It is known that the damping characteristics, or spring characteristics, of the gas in the first gas chamber 3 depend on the gas pressure in the first gas chamber 3 and the cross-sectional area of the first piston. That is, there is a possibility of adjusting the spring characteristic of the first adjusting means by adjusting the gas pressure in the first gas chamber 3.
Further, in order to be able to adjust the spring characteristic of the first adjusting means, as shown in fig. 1, the first piston includes a first piston housing 4, a first piston adjusting plate 5, and a first piston adjusting plate adjusting means, and the first piston housing 4 is movable in the first cylinder 2 to compress the gas in the first gas chamber 3 by the urging action of an external force. A first end (e.g., the upper end in fig. 1) of the first piston adjusting plate 5 is hingedly connected to the first piston housing 4, whereby the first piston adjusting plate 5 can rotate around its first end relative to the first piston housing 4, thereby enabling the first piston adjusting plate 5 to be set in a state of a plurality of included angles with the vertical plane.
In order to adjust the angle between the first piston adjusting plate 5 and the vertical plane, a first piston adjusting plate adjusting device is provided, and includes a first motor 6 and a first lead screw 7, the first lead screw 7 is connected to the first motor 6, specifically, the first motor 6 includes a stator and a rotor, and the rotor of the first motor 6 is connected to the first lead screw 7 to form a lead screw structure, so that when the rotor of the first motor 6 rotates, the rotary motion of the first motor 6 can be converted into the linear displacement of the first lead screw 7. The first motor 6 is fixed on the first piston housing 4, and one end of the first lead screw 7 is connected with the first piston adjusting plate 5, preferably, a hinged connection mode is adopted, and the first lead screw 7 is converted into linear movement through rotation of the first motor 6, so that the first piston adjusting plate 5 can be driven to rotate around the first end of the first piston adjusting plate relative to the first piston housing 4, and the angle between the first piston adjusting plate 5 and a vertical plane is changed. Preferably, one end of the first screw rod 7 is hingedly connected to the middle of the first piston adjusting plate 5.
And in order to be able to transmit forces and vibrations between the helical spring 1 and the first adjustment device, the spring device further comprises a first piston support plate 9 and a first limit plate 8. As shown in fig. 1, the first stopper plate 8 is disposed at a position opposite to the first piston and can stop the movement of the first piston housing 4. A first end (left end in fig. 1) of the first piston supporting plate 9 abuts against the first piston adjusting plate 5 and is slidable relative to the first piston adjusting plate 5, thereby sliding in the vertical direction in fig. 1. A second end (right side in fig. 1) of the first piston supporting plate 9 abuts against the first limiting plate 8, and the first limiting plate 8 is used for supporting the first piston supporting plate 9; in order to ensure that the first piston supporting plate 9 can slide relative to the first piston adjusting plate 5 along the vertical direction in fig. 1, the first piston supporting plate 9 has a first plane facing the first limiting plate 8, and the first limiting plate 8 has a second plane facing the first piston supporting plate 9 and the first piston, the second plane being a plane extending along the vertical direction, wherein the first plane abuts against the second plane to form a surface contact, so that the first limiting plate 8 supports the first piston supporting plate 9, and the first piston supporting plate 9 can be prevented from deflecting or inclining, thereby ensuring that the first piston supporting plate 9 always slides along the vertical plane of the first limiting plate 8. Preferably, the second plane of the first limiting plate 8 is a plane with high smoothness.
Further, in order to better ensure that the first piston supporting plate 9 always slides in the vertical direction, the first piston adjusting plate 5 is provided with a guide groove, not shown in fig. 1, and the first piston supporting plate 9 is provided with a corresponding guide rail, not shown, which is received in the guide groove, so that the first piston supporting plate 9 can stably slide in the vertical direction relative to the first piston adjusting plate 5.
The second end (lower end in fig. 1) of the coil spring 1 abuts against the first piston supporting plate 9, whereby the first piston supporting plate 9 can receive the acting force transmitted from the coil spring 1, transmit the acting force to the first piston adjusting plate 5, and further transmit the acting force to the first piston housing 4, so that the first piston housing 4 can compress the gas in the first gas chamber 3, and when the acting force of the gas in the first gas chamber 3 to the first piston housing 4 is appropriate, the current spring device is in a stable state. When the load on the coil spring 1 is weakened or cancelled, the acting force of the gas in the first gas chamber 3 on the first piston housing 4 can reversely push the first piston housing 4 to move rightwards, further push the first piston adjusting plate 5 to move rightwards, further push the first piston supporting plate 9 to move upwards, so that the coil spring 1 and the first adjusting device are restored.
In the process of the force action between the first piston supporting plate 9 and the first piston adjusting plate 5, it can be known that the action of a certain force applied to the first air chamber 3 can be adjusted by changing the angle of the first piston adjusting plate 5 on the premise that the first piston supporting plate 9 applies the certain force to the first piston adjusting plate 5.
In order to be able to adjust the angle of the first piston adjusting plate 5, the spring device further includes a controller and a first piston adjusting plate angle sensor, not shown, for detecting the rotation angle of the first piston adjusting plate, which is connected to the controller. The controller is connected with the first motor 6 and is used for controlling the moving direction and the displacement of the first screw rod 7 by adjusting the rotating direction and the rotating number of the first motor 6, so as to adjust the rotating angle of the first piston adjusting plate 5.
Further, as shown in fig. 1, the spring device is further provided with a second adjusting device, the second adjusting device is sleeved inside the coil spring 1, the second adjusting device comprises a second cylinder 11, a second piston 10 and a second air chamber, the second piston 10 is accommodated in the second cylinder 11 and can move in the second cylinder 11, the second piston 10 and a part of the second cylinder 11 enclose a second air chamber, the second air chamber 11 accommodates gas, and the second cylinder 11 is arranged on the first piston supporting plate 9. Wherein the second piston 10 is capable of supporting a load, i.e. supporting the load in parallel with the coil spring 1, and sliding in the second cylinder 11 under the force of the load to compress the gas in the second gas chamber 11, thereby providing a supporting and cushioning effect. Referring to fig. 1, in the initial state, the height of the second adjustment device in the free state may be smaller than that of the coil spring 1 in the free state, that is, when a load occurs, the coil spring 1 is compressed without compressing the second adjustment device, and the second adjustment device is compressed only after the coil spring 1 is compressed by a certain stroke, so that a curve of the second-stage damping elasticity can be constructed.
The spring device of the present invention is arranged in series with the first adjusting device by providing the coil spring 1 in parallel arrangement with the second adjusting device and then by the first piston supporting plate 9 and the first piston adjusting plate 5, whereby the spring characteristics of the spring device of the present invention can be determined by the following formula:
the spring constant K of the spring device is:
Figure 795585DEST_PATH_IMAGE001
wherein K1 is the elastic coefficient of the first adjusting device, K2 is the elastic coefficient of the second adjusting device,
Figure 678091DEST_PATH_IMAGE002
theta is the elastic coefficient of the helical spring, theta is the angle of the first piston adjusting plate to the vertical, theta is preferably taken from 10 DEG to 60 DEG, P1 is the gas pressure in the first adjusting device, P2 is the gas pressure in the second adjusting device, function
Figure 30575DEST_PATH_IMAGE003
As a function of the spring constant of the first regulating means and the gas pressure of the first regulating means
Figure 910806DEST_PATH_IMAGE004
Is the spring constant of the second regulating means in relation to the gas pressure of the second regulating means.
In order to adjust the elastic coefficient K of the spring device, the size of the included angle θ between the first piston adjusting plate 5 and the vertical direction, and/or the size of the gas pressure P1 in the first adjusting device, and/or the gas pressure P2 in the second adjusting device can be adjusted, so that the spring characteristics of the spring device can be flexibly, efficiently and quickly adjusted through the combined use of multiple means, the complex and variable vibration reduction requirements can be met in real time, and the spring device is simple in structure, favorable in space, automatic and intelligent.
Specifically, in order to adjust the magnitude of the gas pressure P1 in the first adjusting device and the magnitude of the gas pressure P2 in the second adjusting device, as shown in fig. 1, the spring device further includes a first gas chamber pressure sensor 15, an adjustable pressure gas supply device 12, a first gas chamber inlet duct 13, and a first gas chamber inlet duct adjusting valve 14, wherein the adjustable pressure gas supply device 12 is capable of outputting gases with different pressures, a first end of the first gas chamber inlet duct 13 is connected with the adjustable pressure gas supply device 12, a second end of the first gas chamber inlet duct 13 is connected with the first gas chamber 3, and the first gas chamber inlet duct adjusting valve 14 is disposed on the first gas chamber inlet duct 13 and between the first end and the second end of the first gas chamber inlet duct 14. The variable pressure gas supply 12, the first plenum pressure sensor 15 and the first plenum inlet duct regulator valve 14 are connected to a controller.
The second adjusting device is further provided with a second air chamber pressure sensor 18, a second air chamber air inlet pipeline 16 and a second air chamber air inlet pipeline adjusting valve 17, a first end of the second air chamber air inlet pipeline 16 is connected with the pressure-adjustable air supply device 12, a second end of the second air chamber air inlet pipeline 16 is connected with the second air chamber, and the second air chamber air inlet pipeline adjusting valve 17 is arranged on the second air chamber air inlet pipeline 16 and located between the first end and the second end of the second air chamber air inlet pipeline 16. A second plenum pressure sensor 18 and a second plenum inlet conduit regulator valve 17 are connected to the controller.
The controller obtains the gas pressure in the first gas chamber 3 and the second gas chamber by receiving the data of the first gas chamber pressure sensor 15 and the second gas chamber pressure sensor 18, and according to the requirement of the required vibration damping characteristic, the controller can control the pressure-adjustable gas supply device 12 to change the gas supply pressure or the exhaust pressure head, and can adjust the opening degree of the first gas chamber inlet pipeline adjusting valve 14 and the second gas chamber inlet pipeline adjusting valve 17, so as to adjust the gas pressure in the first gas chamber 3 and the second gas chamber to the required state.
Further, as shown in fig. 1, a first sealing groove is formed in one end of the first piston housing 4 facing the first cylinder 2, and a first sealing ring is installed in the first sealing groove; one end of the second piston 10 facing the second cylinder 11 is provided with a second sealing groove, and a second sealing ring is installed in the second sealing groove. The gas leakage prevention device is used for ensuring that the gas in the first gas chamber and the gas in the second gas chamber cannot be leaked out.
The implementation of the invention has the following beneficial effects: according to the spring device, the spiral spring and the first adjusting device are connected in series, the angle of the first piston adjusting plate in the first adjusting device can be adjusted through the controller, so that the elastic coefficient of the whole spring device is changed, and the elastic coefficient of the continuously adjustable spring device can be obtained through continuous adjustment of the angle of the first piston adjusting plate; in addition, the spring constant of the spring device can be adjusted by additionally changing the spring constant of the first adjusting device by adjusting the gas pressure in the first cylinder; further, by arranging the second adjusting device which is arranged in parallel with the spiral spring, a series-parallel structure in the spring device is formed, and additionally, the elastic coefficient of the second adjusting device can be changed by adjusting other pressure in the second adjusting device, so that the elastic coefficient of the whole spring device can be continuously adjusted in real time, and a large adjusting range and space are provided, and thus, complicated and diversified vibration reduction requirements can be met and met in time.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (10)

1. A spring device with continuously adjustable spring characteristics comprises a spiral spring and a first adjusting device, wherein a first end of the spiral spring is connected with a load, a second end of the spiral spring abuts against the first adjusting device, the first adjusting device comprises a first cylinder, a first air chamber and a first piston, the first piston is accommodated in the first cylinder and can move in the first cylinder, the first piston and part of components of the first cylinder enclose the first air chamber, and gas is accommodated in the first air chamber; the first piston comprises a first piston shell, a first piston adjusting plate and a first piston adjusting plate adjusting device, the first piston shell can move in the first air cylinder, the first end of the first piston adjusting plate is hinged with the first piston shell, the first piston adjusting plate can rotate around the first end of the first piston adjusting plate, the first piston adjusting plate adjusting device comprises a first motor and a first lead screw, the first lead screw is connected with the first motor and can convert the rotary motion of the first motor into linear displacement of the first lead screw, the first motor is fixed on the first piston shell, and one end of the first lead screw is connected with the first piston adjusting plate; the spring device further comprises a first piston supporting plate and a first limiting plate, wherein the first limiting plate is arranged at a position opposite to the first piston and can stop the movement of the first piston shell, the first end of the first piston supporting plate abuts against the first piston adjusting plate and can slide relative to the first piston adjusting plate, the second end of the first piston supporting plate abuts against the first limiting plate and can slide relative to the first limiting plate, and the second end of the spiral spring abuts against the first piston supporting plate, so that the first piston supporting plate can slide between the first piston adjusting plate and the first limiting plate under the force action of the spiral spring and/or the first piston adjusting plate; the spring device also comprises a controller which is connected with the first motor so as to adjust the rotation angle of the first piston adjusting plate.
2. The spring device according to claim 1, wherein one end of the first lead screw is hinged to a middle portion of the first piston adjustment plate.
3. The spring device according to claim 1, wherein the first piston adjustment plate is provided with a guide groove, and the first piston support plate is provided with a guide rail, the guide rail being received in the guide groove.
4. The spring device of claim 3, wherein the first piston support plate has a first flat surface abutting the first stop plate, the first stop plate has a second flat surface supporting the first piston support plate, the first flat surface and the second flat surface being coupled in opposing abutment and thereby guiding movement of the first piston support plate.
5. The spring device of claim 1, further comprising a first piston adjustment plate angle sensor for detecting a rotation angle of the first piston adjustment plate, the first piston adjustment plate angle sensor being connected to the controller.
6. The spring device according to any one of claims 1 to 5, wherein the spring device further comprises a first air chamber pressure sensor, an adjustable pressure air supply device, a first air chamber air inlet pipeline, and a first air chamber air inlet pipeline regulating valve, wherein the adjustable pressure air supply device can output air with different pressures, a first end of the first air chamber air inlet pipeline is connected with the adjustable pressure air supply device, a second end of the first air chamber air inlet pipeline is connected with the first air chamber, and the first air chamber air inlet pipeline regulating valve is arranged on the first air chamber air inlet pipeline and is positioned between the first end and the second end of the first air chamber air inlet pipeline; the adjustable pressure air supply device, the first air chamber pressure sensor and the first air chamber air inlet pipeline adjusting valve are connected to the controller.
7. A spring arrangement according to claim 6, wherein the spring arrangement is further provided with a second adjustment means, the second adjustment means being housed inside the helical spring, the second adjustment means comprising a second cylinder, a second piston and a second gas chamber, the second piston being received in the second cylinder and being movable therein, the second piston enclosing with part of the second cylinder a second gas chamber containing a gas therein; wherein the second piston is capable of supporting a load and sliding in the second cylinder provided on the first piston supporting plate under a force of the load to compress the gas in the second gas chamber.
8. The spring device of claim 7, wherein the second adjusting device is further provided with a second air chamber pressure sensor, a second air chamber inlet conduit, and a second air chamber inlet conduit adjusting valve, wherein a first end of the second air chamber inlet conduit is connected to the adjustable pressure air supply device, a second end of the second air chamber inlet conduit is connected to the second air chamber, and the second air chamber inlet conduit adjusting valve is disposed on the second air chamber inlet conduit between the first end and the second end of the second air chamber inlet conduit; the second air chamber pressure sensor and the second air chamber air inlet pipeline adjusting valve are connected to the controller.
9. The spring device according to claim 8, wherein one end of the first piston housing facing the first cylinder is provided with a first seal groove, and a first seal ring is installed in the first seal groove; and a second sealing groove is formed in one end, facing the second cylinder, of the second piston, and a second sealing ring is installed in the second sealing groove.
10. Spring means according to claim 9, characterised in that the spring means has a spring constant K of:
Figure DEST_PATH_IMAGE001
K1＝f 1 (P1)
K2＝f 2 (P2)
wherein K1 is the elastic coefficient of the first adjusting device, K2 is the elastic coefficient of the second adjusting device, K a Is the elastic coefficient of the spiral spring, theta is the included angle between the first piston adjusting plate and the vertical direction, theta is taken from 10 degrees to 60 degrees, P1 is the gas pressure in the first adjusting device,p2 is the gas pressure in the second regulating device, function f 1 The function f is the relation between the elastic coefficient of the first regulating device and the gas pressure of the first regulating device 2 Is the spring constant of the second regulating means in relation to the gas pressure of the second regulating means.
CN202210560712.3A 2022-05-22 2022-05-22 Spring device with continuously adjustable spring characteristic Active CN114838073B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB422686A (en) * 1933-08-03 1935-01-16 Fritz Faudi Cushioning and shock-absorbing device for vehicles
CN102401076A (en) * 2011-06-22 2012-04-04 贺劼 Compound air spring combining internal spiral spring with volume adjustment
CN103644235A (en) * 2013-12-31 2014-03-19 吉林大学 Semi-active parallel air spring
CN105358862A (en) * 2013-05-30 2016-02-24 Arb有限公司 A shock absorber
CN205890841U (en) * 2016-07-26 2017-01-18 付立君 Multistage hollow cylinder type automobile body auxiliary elevating gear
CN110869224A (en) * 2017-10-24 2020-03-06 宝马股份公司 Spring damper system with variable spring rate
CN114460627A (en) * 2022-02-15 2022-05-10 重庆大学 Pneumatic impact seismic source

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB422686A (en) * 1933-08-03 1935-01-16 Fritz Faudi Cushioning and shock-absorbing device for vehicles
CN102401076A (en) * 2011-06-22 2012-04-04 贺劼 Compound air spring combining internal spiral spring with volume adjustment
CN105358862A (en) * 2013-05-30 2016-02-24 Arb有限公司 A shock absorber
CN103644235A (en) * 2013-12-31 2014-03-19 吉林大学 Semi-active parallel air spring
CN205890841U (en) * 2016-07-26 2017-01-18 付立君 Multistage hollow cylinder type automobile body auxiliary elevating gear
CN110869224A (en) * 2017-10-24 2020-03-06 宝马股份公司 Spring damper system with variable spring rate
CN114460627A (en) * 2022-02-15 2022-05-10 重庆大学 Pneumatic impact seismic source

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