CN108662069B - Support vibration damper - Google Patents
Support vibration damper Download PDFInfo
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- CN108662069B CN108662069B CN201810850830.1A CN201810850830A CN108662069B CN 108662069 B CN108662069 B CN 108662069B CN 201810850830 A CN201810850830 A CN 201810850830A CN 108662069 B CN108662069 B CN 108662069B
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- valve
- supporting
- force
- damping
- vibration damper
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
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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
- F16F9/32—Details
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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
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
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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
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/532—Electrorheological [ER] fluid dampers
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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
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The supporting vibration damper has a better self-adaptive vibration damping function, the damping value of the supporting vibration damper can be automatically adjusted according to the road surface fluctuation condition, the vibration damping effect is better, the structure is simpler, and the control process and method are simpler and the cost is lower. The support vibration damping device includes: the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly; the method is characterized in that: the force measuring element measures the supporting force value of the supporting vibration damper on the supported object, compares the supporting force value with a set force value or the gravity of the supported object of the supporting vibration damper, and controls the damping of the vibration damper by a control component in a mechanical, hydraulic or electric control mode according to the comparison result, so as to adjust the supporting force value of the supporting vibration damper, and enable the supporting force value of the supporting vibration damper to be equal to or close to the set force value or the gravity of the supported object of the supporting vibration damper.
Description
Technical Field
The invention relates to the support and vibration reduction of objects requiring vibration prevention or vibration reduction, and is particularly suitable for vehicle suspension and vibration reduction.
Background
In order to make the vehicle stably run under different road conditions, the suspension and vibration reduction methods of the vehicle are important, and commonly used vibration absorbers are classified into passive, semi-active (adjustable) and active vibration reduction absorbers.
Passive damper: the conventional suspension and vibration reduction method formed by matching the springs and the vibration absorbers belongs to passive vibration reduction, the damping value of the vibration absorbers is determined once the vibration absorbers are designed and installed, the vibration absorbers cannot be adjusted along with load changes, and vibration in the running process of a vehicle cannot be filtered well in the use process.
Semi-active shock absorber: semi-active shock absorbers are less commonly used, and damping can be adjusted conditionally, but due to relatively high cost and difficult maintenance, and have quite limited vibration filtering effects during vehicle travel.
Active vibration damper: the active vibration damper has fewer applications, relatively good effect by means of a computer-aided measurement and control technology, but has the advantages of high cost, insufficient reliability, difficult maintenance and high technical difficulty.
The method adopted at present is similar to the vehicle vibration reduction method, belongs to passive vibration reduction, and cannot actively adjust vibration reduction damping according to the stress condition of the object.
Disclosure of Invention
Technical problem to be solved by the invention
The vibration damper can automatically adjust the damping of the vibration damper according to the stress condition of the supporting spring and the vibration damper on the vibration process of the supported object, and the influence of externally applied force on the supporting force of the spring and the vibration damper in the running process of the vehicle is reduced, so that the vibration is reduced or eliminated. Particularly, when the vehicle runs on a road surface with uneven road surface, the vibration and jolt of the vehicle during running caused by the uneven road surface are reduced.
The technical proposal of the invention
The force measuring element is used for measuring the supporting force value of the supporting vibration damper on the supported object, the control component compares the supporting force value with a set force value or the gravity of the supported object of the supporting vibration damper, and the damping of the vibration damper is controlled in a mechanical, hydraulic or electric control mode according to the comparison result, so that the supporting force value of the supporting vibration damper is adjusted, and the supporting force value of the supporting vibration damper is equal to or close to the set force value or the gravity of the supported object of the supporting vibration damper.
Scheme 1. A support vibration damping device includes: the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly; the method is characterized in that: the force measuring element measures the supporting force value of the supporting vibration damper on the supported object, compares the supporting force value with a set force value or the gravity of the supported object of the supporting vibration damper, and controls the damping of the valve assembly by the control assembly according to the comparison result, so as to adjust the supporting force value of the supporting vibration damper, and the supporting force value of the supporting vibration damper is equal to or close to the set force value or is equal to or close to the gravity of the supported object of the supporting vibration damper. The method comprises the following steps:
the supporting force of the supporting vibration damper is larger than the gravity or the set force value of the supported object, and when the supporting vibration damper is in stretching motion, the force born by the vibration damper is pulling force, so that the stretching damping or stretching damping of the supporting vibration damper is increased. The supporting force of the supporting vibration damper is smaller than the gravity or a set force value of the supported object, and when the supporting vibration damper is in stretching motion, the force born by the vibration damper is a tensile force, so that the stretching damping or stretching damping of the supporting vibration damper is reduced;
or the supporting force of the supporting vibration damper is smaller than the gravity or the set force value of the supported object, and when the supporting vibration damper is in compression motion, the vibration damper is stressed to be pressure, so that the compression damping or the shrinkage damping of the supporting vibration damper is increased. The supporting force of the supporting vibration damper is larger than the gravity or the set force value of the supported object, and when the supporting vibration damper is in compression motion, the vibration damper is stressed to be pressure, so that compression damping or shrinkage damping of the supporting vibration damper is reduced.
Supporting the vibration damper: refers to a device with supporting function and vibration damping function. Such as strut-type dampers with support springs and dampers; such as an air spring and damper combination employing an air suspension system; a spring and damper combination such as a load bearing spring and damper separately disposed; and the support vibration damping system formed by the accumulator (19), the hydraulic valve (a pressure reducing valve (21), a relief valve (23)) and the single-acting hydraulic cylinder (20) belongs to the support vibration damping device.
Supporting springs: and refers to elastic components with energy storage function, such as spiral springs, disc springs, compressed gas energy storages, air springs and the like. The supporting spring is a main component for supporting the vibration damper. The compressed gas accumulator is supported in the support damper device herein in cooperation with the hydraulic cylinder.
Hydraulic cylinder and shock absorber: the hydraulic cylinder comprises a single-acting hydraulic cylinder, a double-acting hydraulic cylinder, a shock absorber and the like. The shock absorber belongs to a special hydraulic cylinder integrated with a valve assembly. The vibration damper comprises a single-cylinder vibration damper, a double-cylinder vibration damper, a magneto-rheological vibration damper and the like which are commonly used. The function of the single-acting hydraulic cylinder and the double-acting hydraulic cylinder in the supporting vibration damper is to transfer the energy of the energy accumulator through liquid flow and to support the energy accumulator together. The main function of the single-tube type vibration damper and the double-tube type vibration damper in the supporting vibration damper is to generate hydraulic damping to slow down vibration.
A valve assembly: means a component having damping action, shut-off action or action for controlling the direction of liquid flow to liquid flow or gas flow, including throttle valve, check valve, pressure reducing valve, overflow valve, magneto-rheological damper, electro-rheological damper, electromagnetic valve, damper base valve and valve on damper piston, etc. Magneto-rheological dampers, electro-rheological dampers, and solenoid valves are collectively referred to herein as electrically controlled valves; the electric control valve in the subsequent case refers to one of a magneto-rheological damper, an electro-rheological damper and an electromagnetic valve. The valve assembly is primarily used in supporting a damping device to damp or control the direction of fluid flow.
When using a magnetorheological damper or a supporting vibration damping device of an electrorheological damper, the hydraulic medium should be a corresponding magnetorheological fluid or electrorheological fluid.
Force measuring element: refers to components that may be used to measure or set a pressure or force value, such as compressed gas springs, coil springs, disc springs, load cells and their associated circuit components, pressure sensors and their associated circuit components, and the like. Springs for setting or regulating the pressure also belong to load cells, such as pressure regulating springs for pressure reducing valves, relief valves, etc.
And a control assembly: refers to an intermediate acting component which is in mechanical linkage, electric control linkage or hydraulic control linkage with a force measuring element and can directly or indirectly regulate the damping of a valve assembly. The control component can be a mechanical component or an electronic circuit device, for example, when the control component is used for controlling an electrorheological damper or a magnetorheological damper and an electromagnetic valve, the control component is an electronic circuit device. The control link (1) in fig. 1, 3 and 5 is also a control assembly, and its function is to directly apply a measured value to the spool valve to drive the spool valve to move up and down, so as to increase or decrease the valve port, thereby controlling the damping of the valve assembly.
The relief valve and the overflow valve in this case belong to the combination of valve assembly, load cell and control assembly. The pressure reducing valve and the overflow valve have the functions of a valve assembly, a force measuring element and a control assembly. The pressure reducing valve compares the set pressure of the pressure regulating spring with the hydraulic pressure in the hydraulic cylinder, and controls the damping force of the pressure reducing valve according to the comparison result, so as to control the pressure of liquid flow entering the hydraulic cylinder, thereby controlling the supporting force of the hydraulic cylinder. The relief valve compares the set pressure of the pressure regulating spring with the hydraulic pressure of the hydraulic cylinder, and adjusts the damping of the relief valve on the liquid flow according to the comparison result, so as to control the liquid flow pressure flowing out of the hydraulic cylinder, thereby controlling the supporting force of the hydraulic cylinder. The damping value of the pressure reducing valve is controlled by the outlet pressure of the pressure reducing valve, and the damping value of the relief valve is controlled by the inlet pressure of the relief valve. The pressure regulating springs of the pressure reducing valve and the overflow valve are used for indirectly measuring the supporting force for supporting the vibration damper by measuring the pressure in the hydraulic cylinder. The force of the pressure regulating springs of the pressure reducing valve and the overflow valve directly acts on the valve core to interact with the inlet and outlet pressure of the hydraulic cylinder, and the damping value of the valve is regulated. The pressure reducing valve and the overflow valve are classified into hydraulic control regulation, namely, the damping values of the pressure reducing valve and the overflow valve are controlled by the magnitude of hydraulic pressure in the hydraulic cylinder.
The pressure reducing valve, relief valve and check valve are not limited to the conventional pressure reducing valve, relief valve and check valve forms, and any component or combination of components having the same function as the pressure reducing valve, relief valve and check valve are considered equivalent to the pressure reducing valve, relief valve and check valve herein.
Scheme 2 (fig. 1, 2) the supporting vibration damping device according to scheme 1 is characterized in that: the control assembly mainly comprises a control connecting rod (1), a valve assembly comprising a one-way valve (6) and a slide valve (8) is integrated on a damper piston (7), the slide valve (8) is connected to the control connecting rod (1), and the force measuring element mainly comprises a force measuring spring (2); the load cell measures the supporting force supporting the vibration damper and adjusts the position of the slide valve (8) by the control link (1) according to the measured value, thereby adjusting the damping of the valve assembly during the stretching process. During compression, the liquid in the compression cavity (9) flows to the stretching cavity (5) through the one-way valve (6) on the piston (7).
Scheme 3 (fig. 3, 4) the supporting vibration damping device according to scheme 1 is characterized in that: the control assembly mainly comprises a control connecting rod (1), a valve assembly comprising a one-way valve (6) and a slide valve (8) is integrated on a shock absorber bottom valve (10), and the slide valve (8) is connected to the control connecting rod (1);
the force measuring spring (2) measures the supporting force for supporting the vibration damper and adjusts the damping of the valve assembly in the compression process through the control connecting rod (1) according to the measured force value. When stretching, the liquid in the liquid storage cavity (18) flows to the compression cavity (9) and the stretching cavity (5) through the one-way valve (6) on the bottom valve (10).
Scheme 4 (fig. 5, 6) the supporting vibration damping device according to scheme 1 is characterized in that: the control assembly mainly comprises a control connecting rod (1), a shock absorber piston (7) is integrated with a check valve (6) communicated with a stretching cavity (5), a check valve (6) communicated with a compression cavity (9), a compression valve communicated with the compression cavity and a stretching valve communicated with the stretching cavity, wherein the check valve is mainly composed of a slide valve (8), the slide valve (8) is connected to the control connecting rod (1), a piston inner cavity (31) is communicated with a liquid storage device (22), and the piston inner cavity is communicated with the stretching cavity (5) and the compression cavity (9) through the check valve (6); when the shock absorber is compressed or stretched, the force measuring spring (2) measures the supporting force value for supporting the shock absorber and adjusts the damping of the stretching valve and the compression valve through the control connecting rod (1) according to the measured force value. When the volume of the stretching cavity (5) or the compression cavity (9) of the shock absorber is increased, liquid flows through the one-way valve (6) to supplement liquid.
Scheme 5 (fig. 7) the supporting vibration damping device according to scheme 1 comprises: a single-acting hydraulic cylinder (20), a supporting spring mainly composed of an energy accumulator (19), a valve assembly and a force measuring element mainly composed of a pressure reducing valve (21) and a one-way valve (6), a control assembly and the like; the method is characterized in that: the energy accumulator (19) is connected with the single-acting hydraulic cylinder through a pressure reducing valve and a one-way valve connected with the pressure reducing valve in parallel; when the single-acting hydraulic cylinder (20) is pressed and retracted, liquid flows into the energy accumulator (19) through the one-way valve (6). When the single-acting hydraulic cylinder stretches, the liquid flow pressure entering the single-acting hydraulic cylinder is compared with the set pressure of the pressure reducing valve, so that the damping value of the pressure reducing valve is adjusted, the hydraulic pressure flowing into the single-acting hydraulic cylinder from the accumulator is not greater than the set force value, and the supporting force of the single-acting hydraulic cylinder is limited to be increased.
Scheme 6 (fig. 8) the supporting vibration damping device according to scheme 1 comprises: a single-acting hydraulic cylinder (20), a supporting spring mainly composed of an energy accumulator (19), a valve assembly mainly composed of an overflow valve (23) and a one-way valve (6), a force measuring and controlling assembly and the like; the method is characterized in that: the energy accumulator (19) is connected with the single-acting hydraulic cylinder through an overflow valve and a one-way valve connected with the overflow valve in parallel; when the single-acting hydraulic cylinder (20) stretches, the liquid in the accumulator (19) flows to the single-acting hydraulic cylinder (20) through the one-way valve (6); when the single-acting hydraulic cylinder (20) compresses, the liquid flow pressure flowing out of the single-acting hydraulic cylinder is compared with the set pressure of the overflow valve, so that the damping value of the overflow valve is adjusted, and the overflow valve (23) enables the liquid pressure flowing out of the single-acting hydraulic cylinder to be not smaller than the set force value, thereby preventing the supporting force of the single-acting hydraulic cylinder from being reduced.
Scheme 7 (fig. 9, 10, 11) the supporting vibration damping device according to scheme 1 comprises: a load cell consisting essentially of a load cell, a control assembly consisting essentially of a controller (24), a valve assembly consisting essentially of an electrically controlled valve (30) on a piston or (and) an electrically controlled valve (30) on a base valve, etc.; the method is characterized in that: at least one of the piston (7) and the bottom valve (10) is provided with an electric control valve (30); when the liquid flow path of the shock absorber is provided with a one-way valve, at least one force transducer is arranged to measure the resultant force of the supporting shock absorber; when the liquid flow path of the shock absorber is not provided with a one-way valve, at least two force sensors are arranged so as to measure the resultant force of supporting the shock absorber and calculate whether the stress state of the shock absorber is tension or pressure; the control component compares the supporting force value of the supporting vibration damper with a set force value or the gravity of a object supported by the supporting vibration damper, and controls the damping of the electric control valve (30) according to the comparison result and the stress state of the vibration damper.
The control method of the electric control damping type supporting vibration damper comprises the following steps:
1. when the supporting force supporting the vibration damping device is greater than the weight or set force value (target force value) of the object supported by the vibration damper and the supporting spring: if the force applied to the shock absorber is a tensile force, increasing the tensile damping of the shock absorber (increasing the damping of the electrically controlled tensile valve);
if the shock absorber is stressed as pressure, the compression damping of the shock absorber is reduced (damping of the electronically controlled compression valve is reduced).
2. When the supporting force supporting the vibration damping device is smaller than the weight or the set force value (target force value) of the object supported by the vibration damper and the supporting spring:
if the force applied to the shock absorber is a tensile force, reducing the tensile damping of the shock absorber (reducing the damping of the electrically controlled tensile valve);
if the shock absorber is stressed to pressure, the compression damping of the shock absorber is increased (increasing the damping of the electronically controlled compression valve).
3. When the supporting force of the supporting vibration damping device is close to or equal to the gravity or the set force value (target force value) of the object supported by the vibration damper and the supporting spring, the current damping value of the vibration damper is maintained.
Stretching valve of shock absorber: refers to the valve through which fluid flows out of the rod chamber (extension chamber) of the hydraulic cylinder as the shock absorber stretches. Compression valve of shock absorber: refers to the valve through which fluid flows out of the hydraulic cylinder or out of the compression chamber as the shock absorber compresses.
Scheme 8 (fig. 9) the supporting vibration damping device according to scheme 7 comprises: a load cell (25) for measuring the supporting force value of the supporting spring (4), a load cell (26) for measuring the pulling force or the pressure value of the hydraulic cylinder (17), a controller (24) and the like; the method is characterized in that: calculating the resultant force of a supporting spring and a hydraulic cylinder (17) on the current supporting vibration damper through the measured value of the force sensor, judging the stress state of the hydraulic cylinder (17), and controlling the damping of the electric control valve by the controller according to the resultant force of the supporting vibration damper and the stress state of the hydraulic cylinder; the damping control method comprises the following steps:
1. when the supporting force value of the supporting vibration damper is larger than the set force value or larger than the gravity of the object supported by the supporting vibration damper and the force on the hydraulic cylinder (17) is pressure, damping values of the piston and the electric control valve (30) on the bottom valve are reduced;
2. when the supporting force value is larger than the set force value or larger than the gravity of a supporting object supported by the vibration damper and the force on the hydraulic cylinder (17) is a pulling force, the damping value of the electric control valve (30) on the piston is increased, and the damping value of the electric control valve (30) on the bottom valve is reduced;
3. when the supporting force value of the supporting vibration damper is smaller than the set force or smaller than the gravity of a object supported by the supporting vibration damper and the force on the hydraulic cylinder (17) is the pressure, the damping value of the electric control valve (30) on the hydraulic cylinder bottom valve (10) is increased, and the damping value of the electric control valve (30) on the piston is reduced;
4. when the supporting force value of the supporting vibration damper is smaller than the set force or smaller than the gravity of the object supported by the supporting vibration damper and the force on the hydraulic cylinder (17) is the pulling force, the damping values of the electric control valve (30) on the piston (7) and the electric control valve (30) on the bottom valve (10) are reduced.
Solution 9. The supporting vibration damping device (fig. 11) according to claim 7 includes:
a valve assembly mainly composed of an electric control valve (30) and a one-way valve (6) on the piston (7), a control assembly mainly composed of a controller (24), a force measuring element mainly composed of a force measuring sensor (25), and the like; the method is characterized in that: the check valve (6) on the piston (7) is connected with the electric control valve (30) in parallel, the force transducer (25) measures the resultant force of the supporting spring and the hydraulic cylinder (17) on the supporting vibration damper, the control component compares the supporting force value of the supporting vibration damper measured by the force transducer (25) with a set force value or the gravity of a object supported by the supporting vibration damper, and the electric control valve (30) is controlled to damp according to the comparison result; the damping control method comprises the following steps:
when the supporting force value of the supporting vibration damper is smaller than the set force or smaller than the gravity of the object supported by the supporting vibration damper, the damping value of an electric control valve (30) on the piston is reduced;
when the supporting force value of the supporting vibration damper is larger than the set force or larger than the gravity of the object supported by the supporting vibration damper, the damping value of the electric control valve (30) on the piston is increased.
When the hydraulic cylinder (17) compresses, the hydraulic medium flows into the stretching cavity through the one-way valve (6) on the piston (7), and when the hydraulic cylinder (17) stretches, the hydraulic medium flows out of the stretching cavity through the electric control valve (30) on the piston (7).
The supporting vibration damper according to claim 2, 3, and 4, wherein the control assembly, i.e., the control link (1), is adjustable in vertical position, i.e., the initial position of the spool valve can be adjusted vertically by adjusting the control link (1), and the damping value of the valve assembly supporting the vibration damper under different loads and the threshold value of the valve assembly when opened or closed can be changed by adjusting the position of the control link (1), so as to adapt to different load conditions.
Scheme 11. A vehicle, such as a single, two, three or multiple wheeled vehicle, is characterized by employing one or more of the support vibration damping devices described in the foregoing schemes 1-10.
The beneficial effects of the invention are that
Compared with the existing self-adaptive vibration reduction technology, the supporting type vibration damper has a better self-adaptive vibration reduction function, the damping value of the supporting type vibration damper can be automatically adjusted according to the road surface fluctuation condition, the vibration reduction effect is better, the structure is simpler, the control process and method are simpler, and the cost is lower.
Drawings
FIG. 1 is a schematic diagram of a spring-supported tension damping controlled support vibration damper
FIG. 2 is an enlarged view of a portion of the valve assembly in the schematic of FIG. 1
FIG. 3 is a schematic diagram of a spring-supported compression damping controlled support damper device
FIG. 4 is an enlarged view of a portion of the valve assembly in the schematic of FIG. 3
FIG. 5 is a schematic diagram of a spring supported tension and compression damping dual controlled support damper
FIG. 6 is an enlarged view of a portion of the valve assembly in the schematic of FIG. 5
FIG. 7 is a schematic diagram of a hydraulic-pneumatic supported tensile damping controlled support vibration damper
FIG. 8 is a schematic diagram of a hydraulic-pneumatic support type compression damping controlled support vibration damper
FIG. 9 schematically illustrates an electrically controlled damping support damper 1
FIG. 10 is a schematic view of an electrically controlled damping support damper 2
FIG. 11 is a schematic view of an electrically controlled damping support damper 3
Number name of the graphic:
1-control connecting rod 2-force measuring spring 3-piston rod
4-supporting spring 5-stretching cavity 6-one-way valve
7-piston 8-slide valve 9-compression chamber
10-bottom valve 11-isolation piston 12-air storage chamber
13-flow path on foot valve under tension 14-flow path on foot valve under compression
15-flow path on piston under compression 16-flow path on piston under tension
17-Hydraulic cylinder 18-liquid storage chamber 19-accumulator (compressed gas spring)
20-Single-acting Hydraulic Cylinder 21-relief valve 22-reservoir
23-relief valve 24-controller 25-load cell (pressure measurement)
26-load cell (tension and compression) 27-signal or control wire
30-electric control valve
31-piston inner chamber 32-fluid flow path
Detailed Description
Preferred embodiment 1: spring-supported tension or (and) compression damping controlled support vibration attenuation device as shown in fig. 1, 2, 3, 4, 5 and 6
The supporting vibration damper mainly comprises a force measuring spring (2), a supporting spring (4), a hydraulic cylinder (a vibration damper) (17), a control valve (a bottom valve (10) on the vibration damper or a slide valve (8) on a piston (7)) and a control connecting rod (1). The slide valve (8) which is linked with the control connecting rod (1) is arranged on the bottom valve (10) or the piston (7), the check valve (6) is also arranged on the bottom valve (10) or the piston (7), when the force measurement value of the force measurement spring (2) changes, the control connecting rod (1) can drive the slide valve (8) to move up and down, so that the opening degree of the slide valve (8) and the valve opening degree of the piston (7) or the bottom valve (10) is increased or decreased, and the damping is changed.
Working principle:
the supporting vibration damper shown in fig. 1 and 2: when the support damping device is compressed under force, liquid flow can flow from the check valve (6) on the piston (7) and the check valve on the bottom valve through the path (14) and the path (15). When the supporting vibration damper is changed from compression to extension, the supporting force is changed from large to small, the force measuring spring (2) is changed from short to long, the control connecting rod (1) and the slide valve (8) on the control connecting rod (1) are driven to move from bottom to top, when the supporting force is smaller than the gravity value or the set force value of a supporting object supported by the supporting vibration damper, the extension valve port (the valve port through which the liquid flow path (16) flows is the extension valve port) is gradually opened from the closing position until the valve is fully opened, and the valve damping is changed from large to small.
The supporting vibration damper shown in fig. 3 and 4: when the support damper is extended, the fluid flow path can flow from the check valve (6) on the base valve and the valve on the piston (7) through the path (13) and the path (16). When the supporting force is larger than the gravity value or the set force value of a supporting object supported by the supporting vibration damper, the valve port is gradually opened from the closing position until the valve is fully opened, and the valve damping is reduced from large to small.
The supporting vibration damper shown in fig. 5 and 6: when the supporting vibration damper stretches, the supporting force is changed from large to small, the force measuring spring (2) is changed from short to long, the control connecting rod (1) and the slide valve (8) on the control connecting rod (1) are driven to move from bottom to top, when the supporting force is smaller than the gravity value or the set force value of a supporting object supported by the supporting vibration damper, the valve port of the stretching valve (the valve port through which a path (16) flows is the valve port of the stretching valve) is opened from a closing position to full opening, and the damping of the stretching valve is changed from large to small; when the supporting force is larger than the gravity value or the set force value of a supporting object supported by the vibration damper, a compression valve port (a valve port through which a path (14) flows) is opened from a closing position to full opening, and the compression valve damping is changed from large to small; when the supporting vibration damper stretches, the liquid flows into the compression cavity (9) through the one-way valve (6) through the flow path 13; when the support vibration damper is compressed, the liquid flows into the stretching cavity (5) through the one-way valve (6) by the flow path (15). Fluid flow in supporting extension and compression of the damper device is through the fluid flow path (32) into and out of the reservoir (22).
The control connecting rod (1) in fig. 1, 3 and 5 can be adjusted up and down, and the position of the slide valve (8) can be adjusted by adjusting the position of the control connecting rod (1), so that the critical force value of the supporting vibration damper when the valve port is opened and when the valve port is closed is adjusted.
Preferred embodiment 2:
schematic diagrams of hydraulic support type stretching or compression damping controlled type support vibration damper as shown in fig. 7 and 8:
the supporting vibration damper mainly comprises an energy accumulator (19), a single-acting hydraulic cylinder (20), a hydraulic valve (a pressure reducing valve (21), an overflow valve (23), a one-way valve (6)) and the like, wherein pressure regulating springs of the pressure reducing valve (21) and the overflow valve (23) set the liquid flow pressure entering or exiting the single-acting hydraulic cylinder (20), and compare the liquid flow pressure entering or exiting the single-acting hydraulic cylinder (20) with the set pressure, so that the supporting force of the single-acting hydraulic cylinder (20) is measured indirectly, and the damping values of valve ports of the pressure reducing valve (21) and the overflow valve (23) are regulated according to the comparison result, thereby regulating the liquid flow pressure entering or exiting the single-acting hydraulic cylinder (20).
Working principle:
the supporting vibration damper shown in fig. 7: when the single-acting hydraulic cylinder (20) is pressed and retracted, liquid flows into the energy accumulator (19) through the one-way valve (6). When the hydraulic cylinder is extended, the pressure reducing valve (21) makes the hydraulic pressure flowing into the hydraulic cylinder from the accumulator not larger than a set force value, thereby limiting the increase of the supporting force of the hydraulic cylinder.
The supporting vibration damper shown in fig. 8: when the single-acting hydraulic cylinder (20) stretches, the liquid in the accumulator (19) flows to the single-acting hydraulic cylinder (20) through the one-way valve (6), and when the single-acting hydraulic cylinder (20) compresses, the overflow valve (23) enables the liquid pressure flowing out of the hydraulic cylinder to be not smaller than a set force value, so that the supporting force of the hydraulic cylinder is prevented from being reduced.
Preferred embodiment 3:
the electrically controlled damping type supporting vibration attenuation device is shown in fig. 9, 10 and 11:
the support vibration damping device includes: the hydraulic damper comprises a force measuring element, a supporting spring (4), a hydraulic cylinder (damper) (17), an electric control valve (namely a valve (30) on a damper bottom valve (10) or a piston (7)), a controller (24) and the like, wherein the force measuring element consists of a weighing sensor and related circuit elements, the controller (24) consists of electronic circuit elements, and the controller (24) is used for calculating the measured value of the force measuring element and controlling the damping value of the electric control valve (30) (the electric control valve refers to an electromagnetic valve, a magneto-rheological damper, an electro-rheological damper and the like). The stretching or (and) compression damping controlled supporting vibration attenuation device shown in fig. 9 and 10, wherein at least one of the bottom valve (10) or the piston (7) is provided with an electric control valve (30), and the stretching or (and) compression damping controlled supporting vibration attenuation device shown in fig. 11, wherein at least one of the bottom valve (10) or the piston (7) is provided with an electric control valve (30) and a one-way valve (6).
Working principle:
the supporting vibration damper shown in fig. 9: the load cell (25) measures the supporting force of the supporting spring (4), and the load cell (26) measures the tension or pressure of the hydraulic cylinder (damper) (17).
The supporting vibration damper shown in fig. 10: the load cell (25) measures the total supporting force of the supporting spring (4) and the hydraulic cylinder (damper) (17), and the load cell (26) measures the pulling force or the pressing force of the hydraulic cylinder (damper) (17).
The supporting vibration damper shown in fig. 11: the load cell (25) measures the total supporting force of the supporting spring (4) and the hydraulic cylinder (shock absorber) (17), and the piston (7) or (and) the bottom valve (10) are provided with a one-way valve (6) besides an electric control valve (30).
In the following working state description, the control signal output by the controller is only suitable for controlling the piston (7) with the electric control valve (30) or the bottom valve (10) with the electric control valve (30), and the damping resistance change of the piston (7) without the electric control valve (30) or the bottom valve (10) without the electric control valve (30) is not controlled by the controller (24). The piston (7) without the electrically controlled valve (30) or the base valve (10) without the electrically controlled valve (30) operate in the same manner as the piston or base valve of a conventional shock absorber. In fig. 9, 10, at least one of the piston (7) and the base valve (10) in the schematic diagram of fig. 11 is provided with an electrically controlled valve (30), and both of them may be provided with an electrically controlled valve (30), but not both of them are necessarily provided with an electrically controlled valve (30).
Fig. 9, supporting vibration damping device shown in fig. 10: the controller (24) calculates resultant force according to the values measured by the force sensor (25) and the force sensor (26), when the resultant force is larger than a set force value and the force value of the hydraulic cylinder (shock absorber) (17) is tensile force, a control signal output by the controller (24) increases the damping of the electric control valve (30) on the piston (7) (the damping is suitable for the case that the electric control valve (30) is arranged on the piston), and reduces the damping of the electric control valve (30) on the bottom valve (10) (the damping is suitable for the case that the electric control valve (30) is arranged on the bottom valve); when the resultant force is larger than a set force value and the force value of the hydraulic cylinder (shock absorber) (17) is pressure, the control signal output by the controller reduces the damping of the electric control valve (30) on the piston (7) (applicable when the electric control valve (30) is arranged on the piston) and the damping of the electric control valve (30) on the bottom valve (10) (applicable when the electric control valve (30) is arranged on the bottom valve).
When the resultant force is smaller than the set force value and the force value of the hydraulic cylinder (shock absorber) (17) is tensile force, the control signal output by the controller (24) reduces the damping of the electric control valve (30) on the piston (7) and the damping of the electric control valve (30) on the bottom valve (10); when the resultant force is smaller than the set force value and the force value of the hydraulic cylinder (shock absorber) (17) is pressure, the control signal output by the controller (24) reduces the damping of the electric control valve (30) on the piston (7) (when the electric control valve (30) is arranged on the piston, the damping of the electric control valve (30) on the base valve (10) is increased (when the electric control valve (30) is arranged on the base valve).
The supporting vibration damper shown in fig. 11: the sensor measures the total supporting force of the supporting spring (4) and the hydraulic cylinder (shock absorber) (17), and the piston (7) or (and) the bottom valve (10) is provided with a one-way valve (6) besides an electric control valve (30).
When the resultant force is larger than the set force value, the controller (24) outputs a control signal to increase the damping of the electric control valve (30) on the piston (7) (which is applicable when the electric control valve (30) is arranged on the bottom valve), and to decrease the damping of the electric control valve (30) on the bottom valve (10) (which is applicable when the electric control valve (30) is arranged on the bottom valve).
When the resultant force is smaller than the set force value, the controller (24) outputs a control signal to reduce the damping of the electric control valve (30) on the piston (7) (which is applicable when the electric control valve (30) is arranged on the piston), and to increase the damping of the electric control valve (30) on the bottom valve (10) (which is applicable when the electric control valve (30) is arranged on the bottom valve (10)).
When the hydraulic cylinder (17) stretches and the electric control valve (30) and the one-way valve (6) are arranged on the bottom valve, liquid flows through the one-way valve (6) on the bottom valve (10) and is not influenced by the electric control valve (30) on the bottom valve (10).
When the hydraulic cylinder (17) compresses and the piston (7) is provided with the electric control valve (30) and the one-way valve (6), liquid flows through the one-way valve (6) on the piston (7) and is not influenced by the electric control valve (30) on the piston (7).
The preferred embodiments selected herein are only a part of them, and any method of directly or indirectly adjusting and controlling the damping force by mechanical, electrical or hydraulic control using the measured force value or directly or indirectly adjusting and controlling the supporting force value of the object by mechanical, electrical or hydraulic control using the measured force value to reduce the vibration are obvious embodiments of the technical solutions adopted herein, which are all within the scope of the present patent technology.
Claims (9)
1. A supporting vibration damping device comprising:
the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly;
the method is characterized in that: the control assembly mainly comprises a control connecting rod (1), a valve assembly comprising a one-way valve (6) and a slide valve (8) is integrated on the shock absorber piston, the slide valve (8) is connected to the control connecting rod (1), and the force measuring element mainly comprises a force measuring spring (2);
the force measuring element measures the supporting force for supporting the vibration damper, and adjusts the position of the slide valve (8) through the control connecting rod (1) according to the measured value, so as to adjust the damping of the valve assembly, when the supporting force for supporting the vibration damper is larger than the gravity or the set force value of the supported object, the stretching damping or the stretching damping of the vibration damper is increased, and when the supporting force for supporting the vibration damper is smaller than the gravity or the set force value of the supported object, the stretching damping or the stretching damping of the vibration damper is reduced.
2. A supporting vibration damping device comprising:
the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly;
the method is characterized in that: the control assembly mainly comprises a control connecting rod (1), a valve assembly comprising a one-way valve (6) and a slide valve (8) is integrated on a shock absorber bottom valve, the slide valve (8) is connected to the control connecting rod (1), and the force measuring element mainly comprises a force measuring spring (2);
the force measuring element measures the supporting force of the supporting vibration damper, and adjusts the damping of the valve assembly through the control connecting rod (1) according to the measured force value, so that when the supporting force of the supporting vibration damper is larger than the gravity or the set force value of the supported object, the compression damping or the shrinkage damping of the supporting vibration damper is reduced, and when the supporting force of the supporting vibration damper is smaller than the gravity or the set force value of the supported object, the compression damping or the shrinkage damping of the supporting vibration damper is increased.
3. A supporting vibration damping device comprising:
the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly;
the method is characterized in that: the control assembly mainly comprises a control connecting rod (1), a damper piston is integrated with a check valve (6) communicated with a stretching cavity (5), a check valve (6) communicated with a compression cavity (9), a compression valve communicated with the compression cavity and a stretching valve communicated with the stretching cavity, wherein the check valve is mainly composed of a slide valve (8), the slide valve (8) is connected to the control connecting rod (1), a piston inner cavity (31) is communicated with a liquid storage device (22), the piston inner cavity is communicated with the stretching cavity (5) and the compression cavity (9) through the check valve (6), and a force measuring element is mainly composed of a force measuring spring (2);
when the shock absorber is compressed or stretched, the force measuring spring (2) measures the supporting force for supporting the shock absorber and adjusts the damping of the stretching valve and the compression valve through the control connecting rod (1) according to the measured force value.
4. A supporting vibration damping device comprising:
the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly;
the method is characterized in that: the hydraulic cylinder mainly comprises a single-acting hydraulic cylinder (20), the supporting spring mainly comprises an energy accumulator (19), the valve component and the force measuring element, and the control component mainly comprises a pressure reducing valve (21) and a one-way valve (6);
the energy accumulator (19) is connected with the single-acting hydraulic cylinder through a pressure reducing valve and a one-way valve connected with the pressure reducing valve in parallel; when the single-acting hydraulic cylinder stretches, the liquid flow pressure entering the single-acting hydraulic cylinder is compared with the set pressure of the pressure reducing valve, so that the damping value of the pressure reducing valve is adjusted; when the single-acting hydraulic cylinder (20) is pressed and retracted, liquid flows into the energy accumulator (19) through the one-way valve (6).
5. A supporting vibration damping device comprising:
the hydraulic system comprises a supporting spring, a hydraulic cylinder, a valve assembly, a force measuring element and a control assembly;
the method is characterized in that: the hydraulic cylinder mainly comprises a single-acting hydraulic cylinder (20), the supporting spring mainly comprises an energy accumulator (19), and the valve component and the force measuring element and the control component mainly comprise an overflow valve (23) and a one-way valve (6);
the energy accumulator (19) is connected with the single-acting hydraulic cylinder through an overflow valve and a one-way valve connected with the overflow valve in parallel; when the single-acting hydraulic cylinder (20) is compressed, the liquid flow pressure flowing out of the single-acting hydraulic cylinder is compared with the set pressure of the overflow valve, so that the damping value of the overflow valve is adjusted; when the single-acting hydraulic cylinder (20) stretches, the liquid in the accumulator (19) flows to the single-acting hydraulic cylinder (20) through the one-way valve (6).
6. A supporting vibration damping device comprising:
support springs, hydraulic cylinders, valve assemblies, load cells, and control assemblies:
the method is characterized in that: the force measuring element mainly comprises a force measuring sensor, the control assembly mainly comprises a controller (24), and the valve assembly mainly comprises an electric control valve (30);
at least one of the piston and the bottom valve is provided with an electrically controlled valve (30),
when the liquid flow path of the shock absorber is provided with a one-way valve, at least one force transducer is arranged to measure the resultant force of the supporting shock absorber;
when the liquid flow path of the shock absorber is not provided with a one-way valve, at least two force sensors are arranged so as to measure the resultant force of supporting the shock absorber and calculate whether the stress state of the shock absorber is tension or pressure;
the control component compares the supporting force value of the supporting vibration damper with a set force value or the gravity of a object supported by the supporting vibration damper, and controls the damping of the electric control valve (30) according to the comparison result and the stress state of the vibration damper.
7. The support vibration damping apparatus of claim 6 comprising:
a load cell for measuring the supporting force value of the supporting spring and a load cell for measuring the pulling pressure value of the hydraulic cylinder, and a controller (24); the method is characterized in that: and calculating the resultant force of the supporting spring and the hydraulic cylinder on the current supporting vibration damper through the measured value of the force sensor, judging the stress state of the hydraulic cylinder, and controlling the damping of the electric control valve by the controller according to the resultant force of the supporting vibration damper and the stress state of the hydraulic cylinder.
8. The support vibration damping apparatus of claim 6 comprising: a valve assembly consisting essentially of an electrically controlled valve (30) and a one-way valve (6) on the piston, a control assembly consisting essentially of a controller (24) and a load cell consisting essentially of a load cell;
the method is characterized in that: the check valve (6) on the piston is connected with the electric control valve (30) in parallel, the force transducer measures the resultant force of the supporting spring and the hydraulic cylinder on the supporting vibration damper, the control component compares the supporting force value of the supporting vibration damper measured by the force transducer with the set force value or the gravity of the object supported by the supporting vibration damper, and the damping of the electric control valve (30) is controlled according to the comparison result.
9. A vehicle employing one of the supporting vibration damping devices as claimed in claims 1 to 8.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810850830.1A CN108662069B (en) | 2018-07-29 | 2018-07-29 | Support vibration damper |
| JP2021504517A JP2021532317A (en) | 2018-07-29 | 2019-05-14 | Support damper and car using it |
| DE112019003811.7T DE112019003811T5 (en) | 2018-07-29 | 2019-05-14 | Support vibration damping device and vehicle with support vibration damping device |
| PCT/CN2019/086920 WO2020024653A1 (en) | 2018-07-29 | 2019-05-14 | Support vibration damping device and vehicle using support vibration damping device |
| KR1020217003444A KR20210027462A (en) | 2018-07-29 | 2019-05-14 | Support and vibration damping device, and vehicle using the support and vibration damping device |
| US17/139,074 US20210123496A1 (en) | 2018-07-29 | 2020-12-31 | Support damping apparatus and vehicle using support damping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810850830.1A CN108662069B (en) | 2018-07-29 | 2018-07-29 | Support vibration damper |
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| CN108662069A CN108662069A (en) | 2018-10-16 |
| CN108662069B true CN108662069B (en) | 2023-10-20 |
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| CN201810850830.1A Active CN108662069B (en) | 2018-07-29 | 2018-07-29 | Support vibration damper |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112019003811T5 (en) * | 2018-07-29 | 2021-05-27 | Gang Chen | Support vibration damping device and vehicle with support vibration damping device |
| CN111750025A (en) * | 2019-03-29 | 2020-10-09 | 陈刚 | Electric control liquid-gas support shock absorber |
| WO2020199754A1 (en) * | 2019-03-29 | 2020-10-08 | 陈刚 | Electrically controlled hydraulic/pneumatic support shock absorber |
| CN110219929A (en) * | 2019-07-16 | 2019-09-10 | 桂林电子科技大学 | A kind of variable damping damper of variable volume |
| CN110778636B (en) * | 2019-11-26 | 2021-04-06 | 重庆大学 | Bidirectional independent controllable magneto-rheological damper |
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| CN108662069A (en) | 2018-10-16 |
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