Simple bearing controlled pneumatic damper

FIELD: machine building.

SUBSTANCE: pneumatic damper consists of case and hollow piston forming closed working volume for working medium and of fasteners of device or system. A free of fastening edge of the case is equipped with a device consisting of brake shoes and a drive pressing them at a proper moment to external surface of the hollow rod with required force. The first and the second additional closed volumes are communicated with working volume by means of valve units and are made as separate tanks of high and low pressure with devices of automatic inlet and outlet of working medium from closed working volume. A processor controls operation of devices for inlet and outlet and also operation of a drive of the brake shoes. By means of sensors the processor continuously tracks specified working parametres of the damper according to one or a rank of programmed damping characteristics. The tanks can be replaceable, while the processor is common for several dampers.

EFFECT: simplified design, upgraded quality of damping and reliable contact of vehicle wheel with road bed.

4 cl, 1 dwg

 

The invention relates to the field of engineering that applies the damping of mechanical vibrations, and, in particular, is intended for use in suspensions of vehicles.

Known telescopic pneumoactuator, comprising a housing and an n-number of stages formed, is established at the primary and secondary hollow rods with spring-loaded pistons with the throttle system and the switching valve system (KKS), the damping of mechanical vibrations which create resistance to movement of the piston by the pulse quantitative redistribution of working agent between above - and podpornoy cavities when changing direction. EN, 2088819, CL F16F 9/04, 1997.

A disadvantage of the known device is the low reliability of CCF and a large delay the start of the expiration of the working agent from the cavity with high pressure into the cavity with less pressure when you change the direction of movement of the piston.

Known design pneumohemothorax, which includes the housing and the hollow piston to form a closed working space for working agent, the first additional volume associated with the displacement of the first valve node, the second additional closed volume that is associated with the displacement of the second valve hub, and means securing pneumohemothorax device to istwo or system. GB, 2000255, CL F16F 9/02, 1979.

A disadvantage of the known device is that it does not provide effective damping of vibrations in a wide frequency range.

The closest technical solution to the claimed invention is pneumoactuator including a housing and a hollow stem forming a closed working space for working agent, the first additional closed volume that is associated with the displacement of the first valve node, the second additional closed volume that is associated with the displacement of the second valve hub, and means securing pneumohemothorax to the device or system. EN, No. 2151932,CL F16F 9/02, 9/04, 2000.

The main disadvantage of this device is a significant lag of process damping.

The present invention is to provide a reliable contact of the wheels of a vehicle with the road surface, simplifying the design of the shock absorber, increasing its reliability and quality.

This task is solved by the removal of the first and second additional closed volumes from the construction of the shock absorber in the form of separate tanks filled with working medium: one for high and the other at low pressure, communicating with a closed displacement of the shock absorber through the automatic inlet and outlet of the working agent. And re ervoir can be interchangeable. For repeated use of the working agent is formed a closed chain of devices, which sequentially moves the working agent, through the use of the compressor, the inlet of which is connected to the tank with a low pressure, and the output to the tank with high pressure, and the compressor and tanks can be used in several absorbers. To ensure the effective damping is free from attachment to the edge of the housing is supplied with a device containing brake pads, and an actuator which presses them to the outer surface of the hollow shaft at the right time and with the required force. To control the operation of the drive and the automatic inlet and outlet of the working agent is applied to the processor with the appropriate programs for implementation of one or several damping characteristics, taking into account signals from sensors monitoring parameters that affect the operation of the shock absorber, and the program automatically maintain one or several reference values of pressure inside a closed volume. To better ensure reliable contact of the wheels with the road surface, the processor may consider the signals from the radar, scanning the profile of the road in front of the vehicle.

The drawing schematically shows a General view of pneumohemothorax and connected with its operation of the device is STV.

Pneumoactuator is installed by fastening means 1 and 2 between the moving part of any device and the rest of his part for damping vibrations transmitted from the moving parts of the device to its rest, and includes a housing 3 with the installed hollow piston 4. Case 3 and the hollow piston 4 form a closed working space 5, which is filled with the working agent under one of several predetermined reference pressure P. the working volume 5 is connected to the reservoir 6 with the working agent under high pressure P1through the device 7 automatic intake working agent in the working volume of 5 and to the reservoir 8 with a working agent under low pressure P2through the device 9 automatic release of the working agent from the working volume of 5. For reuse working agent between the tanks 6 and 8 can be mounted on the compressor 10, the inlet of which is connected with the tank 8, and the output from the tank 6, thereby forming a closed chain of devices, which moves the working agent, and tanks 6.8 and the compressor 10 can be used for multiple absorbers. The free edge of the case 3 is supplemented by a device 11 having the brake pads 12, which are driven 13 at the right time and with some force pressed against the external surface is rnost 14 of the hollow shaft 4. The actuator 13 may be hydraulic, pneumatic, electromagnetic, and other. The actuator is controlled by the CPU 15, the input of which receives signals from sensors 16, continuously monitor the operating parameters of the shock absorber, and radar 17, constantly scanning the profile of the road ahead of the vehicle and underneath. The drive, if it is electromagnetic, and sensors receive electrical energy from an electrical power source 18.

Simple managed with pneumoactuator (POPA) works as follows. Carrier-controlled spring serves as a working volume of 5 filled with the working agent under pressure P, in which the CPU 15 through its programs control the operation of a closed chain movement of the working agent is maintained automatically selected by the driver using one of the buttons on the front panel, one from the reference pressure, the value of which continuously monitors the sensor pressure control (figure 1 does not separately shown) in the working volume of 5, and each of which has its own ground clearance. This occurs by selecting from the working volume of 5 or add the required portions of the working agent command processor 15 on device 9 and 7 automatic inlet to the tank 8 with low pressure P2and release the working agent from the reservoir 6 with high the pressure P 1respectively. P differs from P1and R2in times. The processor 15 uses the same method to increase the efficiency of the damping in POPE only in cases of emergency. The main damping device 11 performs impeding the movement of the hollow rod 4 relative to the housing 3, due to the fact that contained in the actuator 13, controlled by the processor 15, in the right time and with the right force presses the brake pads 12 to the surface of the hollow shaft 4. The processor 15 is supplied with one or more damping characteristics for the shock absorber according to one of them, by enabling the driver on the front panel of the corresponding button. The sensors 16 continuously monitor changes all specified operating parameters of the absorber, and the signals are recorded by the processor to ensure its optimum performance. To better ensure reliable contact between the vehicle wheel and the road surface in the processor 15 is injected signals from radars 17, the scan profile of the railroad bed in front of and below TC. Tanks 6.8 and the compressor 10 can be shared among multiple absorbers, and the shock absorbers are controlled from a single processor 15.

1. Pneumoactuator, including the housing and the hollow piston to form a closed working space for working agent, the first additional lock UTY volume, associated with the displacement of the first valve node, the second additional closed volume that is associated with the displacement of the second valve hub, and means securing pneumohemothorax to the device or system, characterized in that the free from the fastening edge of the housing is supplied with a device containing brake pads and drive to ensure the effective damping pushes them in the right time with the necessary power to the external surface of the hollow shaft, and first and second additional closed volumes with their valve nodes are removed from the design of the shock absorber in separate tanks high and low pressure with automatic inlet and outlet of the working agent from a closed volume, the work of which drive is controlled by the CPU, using sensors constantly monitors the specified operating shock absorber, according to the program laid into him with one or close the damper characteristics, and the tanks can be interchangeable, and the processor is shared among multiple absorbers.

2. Pneumoactuator according to claim 1, characterized in that the tanks are connected to the output and the input of the compressor, than form a closed chain: a closed working volume of the tank under low pressure working agent with automatic release device slave is what the agent from the enclosed volume, compressor, air tank high pressure working agent with the automatic device inlet working agent in a closed working volume, which is controlled by the CPU, and the compressor and the processor can be shared by multiple absorbers.

3. Pneumoactuator according to any one of claims 1 and 2, characterized in that the processor has a program to automatically maintain one or several values of the reference pressure within the confined volume.

4. Pneumoactuator according to any one of claims 1 and 2, characterized in that the processor takes into account the signals from the radar, scanning the profile of the road ahead of the vehicle.



 

Same patents:

FIELD: transport.

SUBSTANCE: spring comprises air spring 1, unloader vessel 2, compressor 3, pickup of pressure difference between unloader vessel 2 and air spring 1, unloader valve 7, pickup of position C of spring connection with receiver of oscillations relative to point A of spring connection with oscillation source, air pump 9 with outlet 10 and inlet 11 valves. Tube 5 communicates compressor 3 and unloader vessel 2. Tube 6 communicates air spring 1 and unloader vessel 1. Tube 12 communicates inlet valve 11 with intake tank 14. Tube 13 communicates unloader valve 7 with intake tank 14. Air spring 1 is additionally communicated via tubes 5 and 6 with unloader vessel 2 and compressor 3. Pressure difference pickup is communicated with sir spring 1, unloader vessel 2 and unloader valve 7. Position pickup 8 is communicated with compressor 3 and unloader valve 7.

EFFECT: ruling out transport facility body vibrations.

1 dwg

FIELD: transport.

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1 dwg

FIELD: transport.

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EFFECT: increase of quality of vibration protection.

2 cl, 1 dwg

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FIELD: machine building.

SUBSTANCE: invention relates to devices of vibroprotective engineering. Vibration isolator contains the first and the second basis, bearing resilient element and damper, fixed between basis, control assembly, stiffness corrector, displacement pickup and electromagnet. Damper is implemented in the form of goffered cylinder, in butt of which it is installed throttle and built-in the second electric valve. The second electric valve is connected to the second outlet of control assembly. Stiffness corrector consists of hydraulic cylinder with piston and rod and two springs, installed inside the "П"-shaped frame. Over- and under-piston cavities of hydraulic cylinder are connected by channel with built-in the first electric valve, connected to the first outlet of control assembly. Rod is pivotally fixed on the first basis, and ends of springs - on casing of hydraulic cylindera and on "П"-shaped frame. Displacement pickup is installed on the first basis and is connected to inlet of control assembly. Electromagnet is fixed on "П"-shaped frame and is connected to the third outlet of control assembly. Limb of magnet is connected by rod to casing of hydraulic cylinder.

EFFECT: there is achieved reliability growth of vibration isolator and effectiveness of objects protection against force impact by means of reduction of number of switching of stiffness corrector.

3 dwg

Dynamic damper // 2374520

FIELD: machine building.

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EFFECT: increasing the efficiency of object vibroprotection.

2 dwg

FIELD: machine building.

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EFFECT: higher comfort and controllability of vehicle in running over irregular road coat.

3 dwg

Dynamic dampener // 2354867

FIELD: mechanical engineering.

SUBSTANCE: invention refers to mechanical engineering, particularly to dampeners of vibrations of mechanical engineering equipment. The dynamic dampener of vibrations consists of a case, divided into three chambers by means of elastic elements in form of membranes and an insertion. The upper and lower chambers are filled with magnetic liquid, while the middle one is filled with air. Systems of channels arranged in the insertion connect the upper and lower chambers. The case of the dampener is enveloped with a coil connected to a control block. From the sensor of vibration acceleration installed on the projecting rod of the insertion signals are transmitted to the control block.

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1 dwg

FIELD: automotive industry.

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EFFECT: improved shock absorbing.

1 dwg

FIELD: transport engineering; suspensions.

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1 dwg

FIELD: transport engineering; vehicle suspensions.

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FIELD: machine building.

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EFFECT: increased stability, service life and simplified design of damper.

1 dwg

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EFFECT: ruling out transport facility body vibrations.

1 dwg

Pneumatic damper // 2406895

FIELD: machine building.

SUBSTANCE: device consists of pneumatic chamber with movable wall and throttle orifice in wall of pneumatic chamber. The throttle orifice is designed for throttling gas motion caused by motion of parts of the device in at least one direction of motion subjected to damping. The device consists of valve arrangement with a valve element suspended by means of a flexible elastomer suspension restricting the throttle orifice. At pressure rise it increases the throttle orifice between sides of the valve arrangement owing to elastic extension of the elastomer suspension. The valve element is made as a whole with the flexible elastomer suspension.

EFFECT: simplified design of pneumatic damper.

9 cl, 15 dwg

FIELD: machine building.

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EFFECT: raised efficiency of damping oscillations and reliability of pneumatic spring operation under continuous high loads.

1 dwg

FIELD: transport.

SUBSTANCE: air spring assembly comprises flexible sleeve secured to air spring piston assembly. Air spring piston assembly comprises outer shell with face and side walls and structural insert fitted therein. Said structural insert consists of multiple inserts. Said inserts have central sections that, when jointed together, form central part of said structural insert, and support walls running from central sections towards outer shell sidewall. To secure structural insert to outer shell, said inserts are furnished with clips while outer shell face wall has mating holes. Said inserts can be made from plastic or metal sheet steel.

EFFECT: higher strength and ease of manufacture.

12 cl, 25 dwg

FIELD: means for damping vibrations.

SUBSTANCE: device comprises positively buoyant member arranged on the surface of liquid. The member is made of the flat spiral spring whose diameter is larger than at least one of the sizes of the vessel when the spring is not deformed. The outer end of the flat spiral spring is free. The inner end of the spring is secured to the round flat float positioned in the central section of the spring. The outer side of the turn of the spring is provided with coating made of flexible material. The flat spiral spring is set in the vessel with interference.

EFFECT: improved damping and simplified structure.

2 dwg

FIELD: designs of dampers.

SUBSTANCE: the invention is pertaining to the field of production of dampers, in particular, to the designs of dampers. The resiliently-frictional damper consists of a cylinder mounted with its base on the surface accepting the impact loadings and a crown cylinder entering with its split end into the cylinder, on the other end of which there is a plug with a sliding valve contacting with the surface transmitting the impact loadings. Between the cylinder and the crown cylinder there is a mounted resilient component made out of the urethane material. The resilient urethane component is made in the form of a pipe with one blanked off end fixed on the bottom of the cylinder with the help of a liquid filled threaded joint, the open end of which is fixed between the crown cylinder butt surface and the plug. The inner surface of the resilient urethane component has a wave shape. The technical result of the invention is development of the damper possessing a simple and reliable design, a stable characteristic at reception of the impact loadings, not dependent on a degree of the frictional surfaces wearing.

EFFECT: the invention ensures development of the damper possessing a simple and reliable design, a stable characteristic at reception of the impact loadings, not dependent on a degree of the frictional surfaces wearing.

4 cl, 1 dwg

The shock absorber // 2237205
The invention relates to mechanical engineering and can be used in all areas of the economy to reduce vibration transmitted from the vibration source on the Foundation, the effects of vibration on the operator's hands while working with mnogoudarnye pneumatic tools, but also as a means of vibration isolation devices, equipment and other facilities, operating under the influence of variables effort or moving with acceleration

The shock absorber // 2235929
The invention relates to mechanical engineering and can be used in all areas of the economy to reduce vibration transmitted from the vibration source on the Foundation, the effects of vibration on the operator's hands while working with mnogoudarnye pneumatic tools, but also as a means of vibration isolation devices, equipment and other facilities, operating under the influence of variables effort or moving with acceleration

The invention relates to the field of engineering, in particular to devices for damping narrow-band (frequency) of the vibrations of various designs

Shock absorber // 2363870

FIELD: mechanics.

SUBSTANCE: invention relates to shock absorber incorporating shock absorbing body. Piston reciprocates in intake chamber to produce air pressure that brings about braking force acting on the said piston. Aforesaid intake chamber features, at least, one orifice. The said piston features a spacer section which, depending upon pressure ratios in the said intake chamber, stays in active engagement with the cylinder. Shock absorber design can be notably simplified by making the piston and its spacer section integral. Both elements are made from soft-elastic material. Piston rod is reinforced with the help of a shell.

EFFECT: reduced labour ioput in manufacture and mounting.

11 cl, 5 dwg

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