CN110242695B - Pneumatic-regulation-control rubber friction shock absorber system - Google Patents
Pneumatic-regulation-control rubber friction shock absorber system Download PDFInfo
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- CN110242695B CN110242695B CN201910529085.5A CN201910529085A CN110242695B CN 110242695 B CN110242695 B CN 110242695B CN 201910529085 A CN201910529085 A CN 201910529085A CN 110242695 B CN110242695 B CN 110242695B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 170
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 15
- 230000035939 shock Effects 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 89
- 239000002184 metal Substances 0.000 claims abstract description 89
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 230000001050 lubricating effect Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- QWVMUSBBWGTKML-UHFFFAOYSA-N [Li].[Mo](=S)=S Chemical compound [Li].[Mo](=S)=S QWVMUSBBWGTKML-UHFFFAOYSA-N 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000004831 Hot glue Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 7
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- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229920001967 Metal rubber Polymers 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
- F16F7/082—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other and characterised by damping force adjustment means
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
- F16F7/09—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other in dampers of the cylinder-and-piston type
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a rubber friction shock absorber system controlled by air pressure regulation, which comprises a rubber shock absorber, a displacement sensor, a data processing system, an air valve controller, an air inlet valve and an air outlet valve; the rubber shock absorber comprises a cylinder barrel, a lubricating layer, a rubber friction metal block, an end metal sealing plate, a rubber friction block, a piston rod, a cover plate and an air pipe; a rubber friction metal block and a rubber friction block are coaxially and sequentially arranged on a piston rod in the cylinder barrel; a plurality of gas channels are formed on the wall of the rubber friction metal block; the periphery of the rubber friction block is provided with a plurality of through holes, so that gas sequentially passes through the air pipe, the air nozzle structure and the gas channel from the air inlet valve and is filled between the through holes of the rubber friction block and the inner wall of the cylinder barrel. According to the invention, the internal air pressure is adjusted through the friction energy dissipation vibration reduction between the rubber friction block and the inner wall of the cylinder barrel and the air valve control adjustment air inlet valve or air release valve, so that the air pressure of the inner wall of the cylinder barrel is changed, the internal friction force is further changed, and the adjustment of the vibration reduction effect of the vibration absorber is stopped.
Description
Technical Field
The invention belongs to the technical field of vibration dampers, and particularly relates to a rubber friction vibration damper system controlled by air pressure adjustment.
Background
The front wheel of the aircraft landing gear can generally freely rotate, when the running speed of the aircraft exceeds a certain critical value, the front wheel can generate self-excited oscillation of left and right severe deflection, namely shimmy, and the shimmy can possibly lead to tire tearing and landing gear fracture to cause serious accidents; in order to eliminate shimmy, almost all landing gear front wheels of high-speed aircraft are provided with shimmy dampers, and hydraulic cylinders are generally used for damping the shimmy dampers, and hydraulic damping has the problems of oil leakage, high maintenance cost and high cost and the like due to failure of sealing gaskets caused by temperature rise.
The rubber friction damper disclosed in The Development of Non-Hydraulic SHIMMY DAMPERS of the technical paper series 2000-01-1710 of the American society of automotive engineering in 2000 does not need maintenance, is low in price, wide in application temperature range and long in service life compared with a hydraulic damper, but the damper disclosed in the paper cannot be regulated in real time in damping performance, is large in initial friction resistance, is not suitable for damping of a front wheel of a landing gear, and is provided based on the fact.
Disclosure of Invention
The technical problems to be solved are as follows: in order to avoid the defects of the prior art, the invention provides the rubber friction damper system with air pressure regulation control, which can regulate air pressure according to real-time requirements, improve damping efficiency and has wide applicability.
The technical scheme of the invention is as follows: a pneumatic controlled rubber friction damper system, characterized by: the device comprises a rubber shock absorber, a displacement sensor, a data processing system, an air valve controller, an air inlet valve and an air outlet valve;
The rubber shock absorber comprises a cylinder barrel, a lubricating layer, a rubber friction metal block, a rubber friction block, a piston rod, a cover plate and an air pipe; the cylinder barrel is of a tubular structure with one end open, a cover plate is arranged at the open end of the cylinder barrel, through holes are formed in the centers of the cover plate and the closed end of the cylinder barrel, and a lubricating layer is coated on the inner wall of the cylinder barrel; the piston rod coaxially and sequentially passes through the through holes of the cover plate and the closed end of the cylinder barrel, and is ensured to be in clearance fit; in the cylinder barrel, a rubber friction metal block and a rubber friction block are coaxially and sequentially fixedly arranged on the piston rod, and the rubber friction block is in interference fit with the inner wall of the cylinder barrel;
The rubber friction metal block is of a tubular structure with two open ends, a plurality of gas channels are arranged between the inner surface and the outer surface of the pipe wall of the rubber friction metal block, two gas channel inlets are respectively arranged at the two ends of the rubber friction metal block, gas nozzle structures are respectively arranged at the two gas channel inlets, and the two gas nozzle structures are respectively connected with the gas inlet valve and the gas outlet valve through gas pipes; the outer peripheral surface of the pipe wall of the rubber friction metal block is provided with a plurality of gas channel outlets; the rubber friction block is of a tubular structure with two open ends, and a plurality of through holes are formed in the peripheral surface of the rubber friction block and correspond to the gas channel outlets of the wall of the rubber friction metal block one by one, so that gas sequentially passes through the gas pipe, the gas nozzle structure and the gas channel from the gas inlet valve to be filled between the through holes of the rubber friction block and the inner wall of the cylinder barrel;
the displacement sensor is used for testing the displacement data of the rubber shimmy damper and feeding back the data to the data processing system; the data processing system generates a control instruction according to the displacement data and sends the control instruction to the air valve controller; the air valve controller executes instructions communicated by the data processing system to further control opening and closing of the air inlet valve and the air outlet valve.
The invention further adopts the technical scheme that: the piston rod is a piston threaded rod and is fixedly arranged in a matched manner with the internal thread of the rubber friction metal block through threads on the outer peripheral surface of the piston rod.
The invention further adopts the technical scheme that: the rubber friction metal block and the rubber friction block are glued by using hot glue, and the rubber friction block is directly vulcanized on the outer surface of the rubber friction block metal block by adopting a vulcanization process.
The invention further adopts the technical scheme that: the rubber friction metal block is characterized in that a plurality of annular bosses are coaxially arranged on the outer peripheral surface of the rubber friction metal block, the width of each boss is more than or equal to 2mm, and the bosses are matched with a plurality of annular grooves arranged on the inner peripheral surface of the rubber friction block, so that the bonding strength between the rubber friction metal block and the rubber friction block can be increased.
The invention further adopts the technical scheme that: the outer circumferential surface of the rubber friction block is provided with a plurality of annular grooves along the axial direction of the rubber friction block, and the annular grooves are used for reducing the contact area between the rubber friction block and the inner wall of the cylinder barrel.
The invention further adopts the technical scheme that: a plurality of through holes are formed in the pipe wall of the rubber friction metal block in the direction parallel to the central axis along the circumferential direction, and a plurality of through holes are formed between each through hole in the pipe wall and the outer surface of the pipe wall and serve as gas channels; annular end metal sealing plates are fixed at two ends of the rubber friction metal block and used for sealing a gas channel of the rubber friction metal block, one end of a through hole formed in the end metal sealing plate is communicated with a plurality of through holes in the pipe wall, which are parallel to the central shaft direction, the other end of the through hole is provided with an air tap structure, and the two air tap structures are connected with an air inlet valve and an air release valve through air pipes respectively.
The invention further adopts the technical scheme that: annular grooves are formed in the end faces of the two ends of the rubber friction metal block; an annular groove formed in one side surface of the end metal sealing plate is matched with an annular groove formed in the end surface of the rubber friction metal block, and an air nozzle structure is arranged on the other side surface of the end metal sealing plate; the end metal sealing plate is welded on the end face of the rubber friction metal block.
The invention further adopts the technical scheme that: the cover plate is screwed and installed at the opening end of the cylinder barrel through threads.
The invention further adopts the technical scheme that: the lubricating layer adopts molybdenum disulfide lithium-based lubricating grease and is directly coated on the surfaces of the cylinder barrel and the rubber friction block.
Advantageous effects
The invention has the beneficial effects that: according to the rubber damper, the rubber friction block and the inner wall of the cylinder barrel are used for friction energy dissipation and vibration reduction, the displacement sensor arranged at the upper part is used for measuring the displacement of the rubber damper, displacement data is fed back to the control system, and the control system is used for controlling and adjusting the air pressure of the air inlet valve or the air release valve to adjust the air pressure of the internal structure through the air valve, so that the air pressure between the through hole of the rubber friction block of the rubber damper and the inner wall of the cylinder barrel is changed, the size of the internal friction force is further changed, and the adjustment of the vibration reduction effect of the damper is realized.
1. According to the invention, the displacement sensor is used for measuring the displacement data of the shimmy damper, the air pressure is changed, the vibration damping effect can be adjusted in real time, the vibration damping efficiency is improved, and the vibration damping device can be used for different conditions Kuang Jianzhen and has wide applicability.
2. The metal framework in the rubber block is divided into a metal rubber friction block and an end metal sealing plate, and the two metal parts are sealed by welding and are prepared separately, so that the processing cost is reduced;
3. The end ring grooves of the rubber friction metal block, the axially uniformly distributed through holes and the circumferentially spaced through holes (such as a row of through holes in the middle of each ring groove are communicated with the axially uniformly distributed through holes, the number and the quantity of the circumferentially spaced through holes can be adjusted according to the ring groove spacing, and generally Kong Jingju groove edge spacing is at least 5 mm); the air tap structure is arranged at the other end of the annular groove at one end of the end metal sealing plate, through holes are arranged in the air tap structure and the annular groove, and after the metal rubber friction block and the end metal sealing plate are welded, the air tap structure is beneficial to the circulation of an air passage and the connection of an air inlet valve and an air outlet valve;
4. the outer surface of the metal rubber friction metal block is provided with a plurality of annular bosses (the width of each boss is more than or equal to 2 mm), so that the bonding strength between the metal block and the rubber friction block is improved, and the metal block and the rubber friction block are not easy to separate under the action of external force;
5. The outer peripheral surface of the rubber friction block is provided with a plurality of annular grooves along the axial direction of the rubber friction block, so that the contact area between the rubber friction block and the inner wall of the cylinder barrel is reduced, and the initial starting friction resistance is reduced;
6. the rubber friction damper has the advantages of simple structure of each part, easy processing, convenient disassembly and assembly and easy maintenance.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is an isometric view of a rubber friction damper of the present invention;
FIG. 3 is a cross-sectional view of the rubber friction damper of the present invention;
FIG. 4 is a schematic view of a rubber friction metal block of the rubber friction damper of the present invention;
FIG. 5 is a schematic view of a metal end closure of a rubber friction damper according to the present invention;
FIG. 6 is a schematic view of a rubber friction block of the rubber friction damper of the present invention;
Reference numerals illustrate: 1. a cylinder; 2. a lubrication layer; 3. rubber friction metal block; 4. an end metal sealing plate; 5. a rubber friction block; 6. a piston threaded rod; 7. a cover plate; 8. an air pipe; 10. a rubber damper; 20. a displacement sensor; 30. a data processing system; 40. an air valve controller; 50. an intake valve; 60. a bleed valve;
Detailed Description
The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The rubber friction damper system of the air pressure adjustment control of the present embodiment is constituted by a rubber damper 10, a displacement sensor 20, a data processing system 30, an air valve controller 40, an air intake valve 50 and an air release valve 60 in combination with fig. 1. The rubber friction damper is arranged on the front wheel swing reducing structure of the landing gear, when the aircraft slides at a high speed and the front wheel deflects left and right, the swing reducing structure is connected with a piston threaded rod of the rubber friction damper, so that the piston threaded rod is forced to move left and right in the cylinder barrel to consume overload energy through friction, and swing vibration is effectively reduced or eliminated.
The rubber damper 10 absorbs vibration through axial left and right friction energy dissipation, the displacement sensor 20 measures the displacement of the rubber damper 10, the data processing 30 system generates control instructions according to displacement data and sends the control instructions to the air valve controller 40, the air valve controller 50 executes instructions transmitted by the data processing system, and the air valve controller 50 and the air release valve 60 are opened and closed to release or intake air, so that the friction force of the rubber damper is changed, the vibration reduction effect is changed, and the ideal requirement is met.
The main components of the rubber friction damper system controlled by air pressure regulation are rubber dampers, and the rubber friction damper system mainly comprises a cylinder barrel 1, a lubricating layer 2, a rubber friction metal block 3, an end metal sealing plate 4, a rubber friction block 5, a piston threaded rod 6, a cover plate 7 and an air pipe 8, wherein the main components are as shown in fig. 2 and 3. The cylinder barrel 1 is positioned at the outermost layer and used for supporting the whole structure; the lubrication layer 2 is positioned at the inner side of the cylinder barrel and used for lubricating the left and right friction of the rubber friction block; the rubber friction metal block 3 is positioned between the rubber friction block and the piston threaded rod, is used for enhancing the strength of the friction block, is connected with the piston threaded rod and is a gas channel; the end metal sealing plates 4 are positioned at two ends of the rubber friction metal block, are used for sealing the gas channel of the rubber friction metal block and are connected with an external gas circuit; the rubber friction block 5 is positioned at the inner side of the lubricating layer and at the outer side of the rubber friction metal block and is used for friction vibration reduction; the piston threaded rod 6 is positioned in the middle of the shock absorber and is used for connecting the rubber friction block and the landing gear swing reducing structure; the cover plate 7 is positioned at one end of the cylinder barrel and is used for sealing the end cover of the shock absorber; air pipes 8 are located on either side of the end metal seal plates 4 for connecting the friction damper and air inlet 50 and air outlet 60 valves.
The process and method for designing and manufacturing the rubber friction damper are as follows:
The layout of the rubber shock absorber is as shown in fig. 3, 4, 5 and 6, and the cylinder 1 is provided with an opening end inside tapping for installing the cover plate 7; a lubricating layer 2 is coated on the inner surface of the cylinder tube 1. The rubber friction metal block 3 is provided with threads on the inner surface, so that the rubber friction metal block is convenient to connect with the piston threaded rod 5, annular grooves at two ends are communicated with 8 gas channels in the interior, annular grooves are formed in the outer surface of the rubber friction metal block, and the bonding strength between the metal block and the rubber friction block is improved; the end metal sealing plate 4, one end annular groove can be connected with the air channel of the rubber friction metal block 3, and the other end is of an air tap structure, so that the end metal sealing plate is convenient to be connected with the air inlet valve 50 or the air outlet valve 60 through a pipeline; the outer surface of the rubber friction block 5 is provided with a concave groove, so that friction resistance can be reduced, the rubber friction damper can slide left and right conveniently, the circumference of the rubber friction block cylinder is provided with a gas channel, gas can pass through conveniently, and the diameters of the two ends of the rubber friction block cylinder are slightly larger than those of the lubricating layer 2, so that the rubber friction block cylinder is used for sealing structural gas; the threaded rod 6 of the piston is threaded so as to be conveniently connected with the rubber friction metal block 3 and the end metal sealing plate 4; the outer surface of the cover plate 7 is tapped with external threads and can be directly screwed into the cylinder barrel 1, and the central hole of the cover plate 7 can be directly installed through the piston threaded rod 3; the air pipe 8 can be directly connected with the air tap of the end metal sealing plate 4.
The cylinder barrel 1, the piston threaded rod 6 and the cover plate 7 are all 304 stainless steel machined parts, so that the rigidity and strength requirements of the shock absorber structure can be met; the lubricating layer 2 is molybdenum disulfide lithium-based lubricating grease No. 3, and can meet the friction lubrication requirement; the rubber friction metal block 3 and the end metal sealing plate 4 are made of 304 stainless steel, so that the requirements on rigidity and strength of the friction block can be met; the rubber friction block 5 is polyurethane silicon rubber, and can meet the friction vibration reduction requirement; the air pipe 8 is a common rubber pipe.
The preparation and installation process comprises the following steps:
1) Welding: welding the machined rubber friction metal block 3 and the end metal sealing plate 4, wherein the welding seam is required to be smooth and smooth;
2) Prefabricating a rubber friction block: placing the welded metal block into a mould after surface treatment, inserting a gas passage pin, pouring the prepared rubber liquid (the prepared rubber liquid needs to be defoamed firstly), heating and vulcanizing, and taking out the prepared rubber friction block for repairing, wherein the gas passage is required to be plugged;
2) Bonding lubrication layer 2: coating a lubricating layer 2 on the inner surface of the cylinder barrel 1, and coating the lubricating layer 2 on the outer surface of a prefabricated rubber friction block;
3) And (3) installing a rubber friction block: a rubber friction block is screwed into the piston threaded rod 5;
4) Installing an air pipe 8, namely installing a pipeline 8 at the air tap position of the end metal sealing plate 4 twice and fastening the pipeline by using a clamp;
5) And (3) installing a piston threaded rod 3: inserting a piston threaded rod provided with a rubber friction block into the cylinder barrel 1, and moving up and down to see whether the rubber friction block is jammed, if so, trimming the outer diameter of the rubber friction block;
6) Mounting a cover plate 7: the cover 7 is threaded through the end of the threaded rod and screwed directly into the inside of the cylinder 1.
7) And (3) system connection: on the landing gear body of the rubber friction damper 10, a displacement sensor 20 is arranged at the upper end of the rubber damper, and is connected with a data processing system 30 and an air valve controller 40, and an air inlet valve 50 and an air outlet valve 60 are connected at two sides of the air pipe 8.
The foregoing is a further detailed description of the provided technical solution in connection with the preferred embodiments of the present invention, and it should not be construed that the specific implementation of the present invention is limited to the above description, and it should be understood that several simple deductions or substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and all the embodiments should be considered as falling within the scope of the present invention.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (9)
1. A pneumatic controlled rubber friction damper system, characterized by: the device comprises a rubber shock absorber, a displacement sensor, a data processing system, an air valve controller, an air inlet valve and an air outlet valve;
The rubber shock absorber comprises a cylinder barrel, a lubricating layer, a rubber friction metal block, a rubber friction block, a piston rod, a cover plate and an air pipe; the cylinder barrel is of a tubular structure with one end open, a cover plate is arranged at the open end of the cylinder barrel, through holes are formed in the centers of the cover plate and the closed end of the cylinder barrel, and a lubricating layer is coated on the inner wall of the cylinder barrel; the piston rod coaxially and sequentially passes through the through holes of the cover plate and the closed end of the cylinder barrel, and is ensured to be in clearance fit; in the cylinder barrel, a rubber friction metal block and a rubber friction block are coaxially and sequentially fixedly arranged on the piston rod, and the rubber friction block is in interference fit with the inner wall of the cylinder barrel;
The rubber friction metal block is of a tubular structure with two open ends, a plurality of gas channels are arranged between the inner surface and the outer surface of the pipe wall of the rubber friction metal block, two gas channel inlets are respectively arranged at the two ends of the rubber friction metal block, gas nozzle structures are respectively arranged at the two gas channel inlets, and the two gas nozzle structures are respectively connected with the gas inlet valve and the gas outlet valve through gas pipes; the outer peripheral surface of the pipe wall of the rubber friction metal block is provided with a plurality of gas channel outlets; the rubber friction block is of a tubular structure with two open ends, and a plurality of through holes are formed in the peripheral surface of the rubber friction block and correspond to the gas channel outlets of the wall of the rubber friction metal block one by one, so that gas sequentially passes through the gas pipe, the gas nozzle structure and the gas channel from the gas inlet valve to be filled between the through holes of the rubber friction block and the inner wall of the cylinder barrel;
The displacement sensor is used for testing the displacement data of the rubber shock absorber and feeding back the data to the data processing system; the data processing system generates a control instruction according to the displacement data and sends the control instruction to the air valve controller; the air valve controller executes instructions communicated by the data processing system to further control opening and closing of the air inlet valve and the air outlet valve.
2. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: the piston rod is a piston threaded rod and is fixedly arranged in a matched manner with the internal thread of the rubber friction metal block through threads on the outer peripheral surface of the piston rod.
3. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: the rubber friction metal block and the rubber friction block are glued by using hot glue, and the rubber friction block is directly vulcanized on the outer surface of the rubber friction block metal block by adopting a vulcanization process.
4. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: the rubber friction metal block is characterized in that a plurality of annular bosses are coaxially arranged on the outer peripheral surface of the rubber friction metal block, the height of each boss is more than or equal to 2mm, and the bosses are matched with a plurality of annular grooves arranged on the inner peripheral surface of the rubber friction block, so that the bonding strength between the rubber friction metal block and the rubber friction block can be increased.
5. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: the outer circumferential surface of the rubber friction block is provided with a plurality of annular grooves along the axial direction of the rubber friction block, and the annular grooves are used for reducing the contact area between the rubber friction block and the inner wall of the cylinder barrel.
6. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: a plurality of through holes are formed in the pipe wall of the rubber friction metal block in the direction parallel to the central axis along the circumferential direction, and a plurality of through holes are formed between each through hole in the pipe wall and the outer surface of the pipe wall and serve as gas channels; annular end metal sealing plates are fixed at two ends of the rubber friction metal block and used for sealing a gas channel of the rubber friction metal block, one end of a through hole formed in the end metal sealing plate is communicated with a plurality of through holes in the pipe wall, which are parallel to the central shaft direction, the other end of the through hole is provided with an air tap structure, and the two air tap structures are connected with an air inlet valve and an air release valve through air pipes respectively.
7. The air pressure regulating controlled rubber friction damper system according to claim 6, wherein: annular grooves are formed in the end faces of the two ends of the rubber friction metal block; an annular groove formed in one side surface of the end metal sealing plate is matched with an annular groove formed in the end surface of the rubber friction metal block, and an air nozzle structure is arranged on the other side surface of the end metal sealing plate; the end metal sealing plate is welded on the end face of the rubber friction metal block.
8. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: the cover plate is screwed and installed at the opening end of the cylinder barrel through threads.
9. The air pressure regulating controlled rubber friction damper system according to claim 1, wherein: the lubricating layer adopts molybdenum disulfide lithium-based lubricating grease and is directly coated on the surfaces of the cylinder barrel and the rubber friction block.
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| CN201910529085.5A CN110242695B (en) | 2019-06-19 | 2019-06-19 | Pneumatic-regulation-control rubber friction shock absorber system |
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| CN201910529085.5A CN110242695B (en) | 2019-06-19 | 2019-06-19 | Pneumatic-regulation-control rubber friction shock absorber system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5257680A (en) * | 1991-12-20 | 1993-11-02 | Lord Corporation | Surface effect dampers having both hysteresis and a frictional component |
| CN2374696Y (en) * | 1999-04-20 | 2000-04-19 | 汪平和 | Pressure absorber of motor vehicle |
| JP2004003563A (en) * | 2002-05-31 | 2004-01-08 | Tokai Rubber Ind Ltd | Sliding friction damper |
| CN201511774U (en) * | 2009-08-06 | 2010-06-23 | 宣昌黎 | Energy-saving vibration absorber of car |
| CN201679896U (en) * | 2010-01-12 | 2010-12-22 | 宁波米斯克精密机械工程技术有限公司 | Vibration resistant device of mechanical equipment |
| CN102628486A (en) * | 2012-04-01 | 2012-08-08 | 常乐 | Stiffness and damp variable air vibration isolation support |
| KR20170089054A (en) * | 2016-01-25 | 2017-08-03 | 최창림 | Pneumatic shock absorber |
| CN109869429A (en) * | 2017-12-01 | 2019-06-11 | 中国飞机强度研究所 | A kind of novel friction type shimmy-damper |
-
2019
- 2019-06-19 CN CN201910529085.5A patent/CN110242695B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5257680A (en) * | 1991-12-20 | 1993-11-02 | Lord Corporation | Surface effect dampers having both hysteresis and a frictional component |
| CN2374696Y (en) * | 1999-04-20 | 2000-04-19 | 汪平和 | Pressure absorber of motor vehicle |
| JP2004003563A (en) * | 2002-05-31 | 2004-01-08 | Tokai Rubber Ind Ltd | Sliding friction damper |
| CN201511774U (en) * | 2009-08-06 | 2010-06-23 | 宣昌黎 | Energy-saving vibration absorber of car |
| CN201679896U (en) * | 2010-01-12 | 2010-12-22 | 宁波米斯克精密机械工程技术有限公司 | Vibration resistant device of mechanical equipment |
| CN102628486A (en) * | 2012-04-01 | 2012-08-08 | 常乐 | Stiffness and damp variable air vibration isolation support |
| KR20170089054A (en) * | 2016-01-25 | 2017-08-03 | 최창림 | Pneumatic shock absorber |
| CN109869429A (en) * | 2017-12-01 | 2019-06-11 | 中国飞机强度研究所 | A kind of novel friction type shimmy-damper |
Non-Patent Citations (1)
| Title |
|---|
| 充气式减振器的制造及使用;涂皓婧;机械工程与自动化;20110415(第2期);184-185 * |
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| CN110242695A (en) | 2019-09-17 |
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