CN113531029B - Vibration damping cylinder stirring type base vibration attenuation device - Google Patents
Vibration damping cylinder stirring type base vibration attenuation device Download PDFInfo
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- CN113531029B CN113531029B CN202110787946.7A CN202110787946A CN113531029B CN 113531029 B CN113531029 B CN 113531029B CN 202110787946 A CN202110787946 A CN 202110787946A CN 113531029 B CN113531029 B CN 113531029B
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid 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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vibration damping cylinder stirring type base vibration attenuation device, which relates to the field of base vibration attenuation.A host machine is fixed above a base body, the vibration damping cylinder comprises an upper vibration damping cylinder and a lower vibration damping cylinder, the upper vibration damping cylinder and the lower vibration damping cylinder are integrally formed, the lower vibration damping cylinder is uniformly distributed on the lower surface of the upper vibration damping cylinder, a piston is arranged in the upper vibration damping cylinder, the upper part of the piston is contacted with the host machine, and the piston is attached and sealed with the inner wall of the upper vibration damping cylinder; the upper opening of the upper vibration damping cylinder is fixed with a polymer resin pressure reducing material, and the main machine is fixed on the polymer resin pressure reducing material; a telescopic device is arranged between the upper vibration damping cylinder and the lower vibration damping cylinder and divides the space inside the upper vibration damping cylinder and the lower vibration damping cylinder. The beneficial effects are that: the vibration of the main machine is reduced through the stepped vibration reduction design, and the article protection device has a good protection effect on articles; the energy generated by vibration is dissipated in a mode of extruding and stirring the damping liquid, and an external power supply or heat dissipation equipment is not needed.
Description
Technical Field
The invention relates to the field of base vibration reduction, in particular to a vibration reduction cylinder stirring type base vibration attenuation device.
Background
In recent years, with the development of shipping industry, the power and the rotating speed of a main engine are improved, the tonnage of a ship is increased, and the large ship is developed, so that the vibration of a ship body is continuously displayed. The main machine base vibrates more prominently than other structures, so how to attenuate the main machine base vibration becomes a difficult problem in the field of ships. The severe vibration can cause fatigue damage to the hull structure when the stress is too large, and the navigation safety is influenced; influence the living comfort of the crew and passengers; the normal use of equipment and instruments on the ship is influenced. Most of the existing host machine base vibration attenuation devices are vibration attenuation devices designed on the host machine base locally, and have larger unstable factors; the other vibration attenuation devices can only attenuate the vertical vibration and have little effect on the vibration in other directions. Thus, a unitary, multi-orientation vibration attenuation apparatus is desired.
Most of the existing host machine base vibration attenuation devices are designed at local positions of a host machine base, but the locally designed devices have large unstable factors, such as: instability of the vibration damping device itself, uneven pressure distribution; the host base is connected with the vibration attenuation device in a local mode, so that the device is not stressed uniformly, and the host base structure is influenced, so that the aging of the host base structure is accelerated.
The invention patent with publication number CN 107575528 discloses a vibration damper for precision communication equipment, which is provided with a lower water cavity and a side water cavity which are communicated through a damping hole; the lower piston group is arranged at the upper end of the lower plate and is communicated with the lower water cavity, the lower piston is arranged in the lower piston hole in a penetrating way, the two ends of the lower compression spring group are respectively connected with the lower end of the lower piston and the lower end of the lower water cavity, a plurality of side piston holes are circumferentially distributed along the inner side of the side wall plate and are communicated with the side water cavity, the number of the side piston holes is the same as that of the side piston holes, the side pistons are arranged in the side piston holes in a penetrating way in a one-to-one correspondence way, and the number of the side compression spring groups is the same as that of the side pistons and is in one-to-one correspondence; two ends of the side pressure spring group are respectively connected with the outer end of the side piston and the outer side wall of the side water cavity. This vibration damper can only realize the damping through the buffering effect that the circulation of liquid produced, and need arrange whole device in inside the box, has the commonality poor, technical problem such as unable heat dissipation, and subduct ability to vibration by a wide margin is poor.
The invention patent publication No. CN108194570A discloses a rigid-elastic conversion shock absorber that reduces the vibration response of an upper load in an elastic state by using a viscous damper or an eddy current damper as a damping unit. However, the electromagnetic equipment has high requirements on the environment, and is damaged due to severe vibration, high temperature and the like, and the adaptability is poor.
Disclosure of Invention
In order to solve the problems, the invention provides a vibration damping device which comprises a base body, wherein a host is fixed above the base body, and the vibration damping device is characterized by comprising a vibration damping cylinder and a piston, wherein the vibration damping cylinder comprises an upper vibration damping cylinder and a lower vibration damping cylinder, the upper vibration damping cylinder and the lower vibration damping cylinder are integrally formed, the lower vibration damping cylinder is uniformly distributed on the lower surface of the upper vibration damping cylinder, the piston is arranged in the upper vibration damping cylinder, the upper part of the piston is connected with the host, and the piston is attached and sealed with the inner wall of the upper vibration damping cylinder; a damping plate is fixed on the opening of the upper damping cylinder, and the main machine is fixed on the damping plate; a telescopic device is arranged between the upper vibration damping cylinder and the lower vibration damping cylinder, the telescopic device divides the space inside the upper vibration damping cylinder and the lower vibration damping cylinder, and the space enclosed by the telescopic device, the lower surface of the piston and the inner side wall of the upper vibration damping cylinder is a lower cavity chamber.
Preferably, the upper part of the piston is provided with a decompression layer; the outer peripheral side of the decompression layer is fixedly connected with a vibration reduction plate, the vibration reduction plate and the decompression layer jointly seal an upper opening of the upper vibration reduction cylinder, and a space defined by the upper side surface of the piston, the vibration reduction plate and the inner wall of the upper vibration reduction cylinder is an upper chamber of the upper vibration reduction cylinder; the upper chamber is filled with gas.
Preferably, the piston is provided with a duct, and the duct is communicated with the upper cavity and the lower cavity; the culvert is S-shaped, the diameter of the culvert is gradually narrowed from top to bottom, a pressure sensor, a gravity sensor and a valve are installed in the culvert, and damping fluid is filled in the upper vibration reduction cylinder.
Preferably, the telescopic device comprises an elastic lifting device, a sealing gasket, a hexagon screw and a hexagon nut, wherein the elastic lifting device is a cylindrical telescopic device which is extended under the action of downward pressure, and the pressure disappears or is reduced to restore the original shape; the upper part of the elastic lifting device is fixed on an upper supporting platform, the peripheral side of the upper supporting platform is fixed on the inner side wall of the lower vibration damping cylinder, and the shape and the size of a middle opening of the upper supporting platform are the same as those of an upper opening of the elastic lifting device; the lower part of the elastic lifting device is fixed on the lower supporting platform, and the lower opening of the lifting device is sealed by the lower supporting platform; the input shaft is fixed in the middle of the lower supporting platform by the hexagon screws and the hexagon nuts, and a sealing gasket is arranged between the input shaft and the lower supporting platform.
Preferably, the stirring dissipation structure comprises an input shaft sleeve, a cylindrical roller bearing, a plane bearing, a shaft sleeve, a flange nut and a stirring paddle, wherein the inner side of the input shaft sleeve is provided with an internal thread, and the internal thread is matched with an external thread arranged on the peripheral surface of the input shaft; the flange is arranged in the lower vibration damping cylinder, the shaft sleeve is fixed on the flange in a suspension mode through the flange nut, the inner side of the shaft sleeve is sequentially fixed with the plane bearing and the cylindrical roller bearing, the input shaft sleeve is provided with the extension rod, and the tail end of the extension rod is fixed with the stirring paddle.
Preferably, the lower vibration reduction cylinder is filled with damping liquid, and the stirring paddle is immersed by the damping liquid.
Preferably, a damping fluid replacement collector is arranged at the lower part of the middle position of the upper vibration damping cylinder, the damping fluid replacement collector comprises a collector and a valve switch, and the valve switch comprises an output port, a first pipeline, a rotating shaft device, a second pipeline, transverse threads, a transverse thread fit opening and a vertical thread fit opening; the first pipeline comprises an inclined part and a vertical part which are communicated with each other; the first pipeline and the second pipeline are centrosymmetric, and a circular truncated cone-shaped through hole is formed between the first pipeline and the second pipeline; the valve switch is characterized in that a boss is arranged at the middle part of the valve switch, the axis of the boss and the circular truncated cone-shaped through hole are positioned on the same straight line, the boss is meshed with the rotating shaft device through a transverse thread, the left side of the rotating shaft device is in a circular truncated cone shape, and the boss is matched with the circular truncated cone-shaped through hole to realize the opening and closing of the circular truncated cone-shaped through hole; an output port is arranged on the upper side of the first pipeline; and a vertical thread fit opening is formed in the lower side of the second pipeline and meshed with a vertical thread on the collector.
Preferably, the lower vibration reduction cylinder is provided with a damping liquid impurity collecting device which comprises a spring baffle plate, a spring, a hinge upper plate, a hinge lower plate, a damping liquid baffle plate, a handle, a groove collector and a rolling ball; the hinge upper plate is fixed on the side wall of the lower vibration damping cylinder, the hinge upper plate and the hinge lower plate are connected together through a rotating shaft, and the hinge lower plate can rotate; the spring blocking plate is welded on the side wall of the lower vibration damping cylinder, the lower side of the spring blocking plate is attached to the upper edge of the upper plate of the hinge, and the upper end of the spring is welded on the lower side of the spring blocking plate; the damping liquid resistance partition plate is of a plate-shaped structure and can be inserted into a groove formed in the side wall of the lower vibration reduction cylinder to seal the lower side of the lower vibration reduction cylinder; and a groove collector is arranged below the damping liquid resistance separation plate, and the lower part of the groove collector is in contact with a rolling ball arranged at the bottom of the lower vibration damping cylinder.
The invention has the beneficial effects that:
1. the integral vibration damping cylinder stirring type base vibration attenuation device provided by the invention is provided with three layers of vibration damping modes, wherein the first layer of vibration damping mode is a vibration damping plate on the outermost layer of the base, and when a host vibrates, the left-right shaking of the host is reduced. The second layer of vibration reduction mode integrated piston moves under the external force image to compress the damping liquid. The third layer of vibration reduction mode is that when external force is too large, the plate expansion device pushes the lower bottom plate to move towards the lower part of the vibration reduction cylinder, and the input shaft sleeve are pushed to move, so that the fan is driven to stir damping liquid to reduce vibration. The vibration of the fixed appliance on the base is effectively reduced through the stepped vibration reduction design, and the main machine is well protected.
2. The energy generated by vibration is dissipated in a mode of extruding and stirring the damping liquid, and an external power supply or heat dissipation equipment is not needed.
3. Through the cooperation use of duct and piston, can effectually alleviate small longitudinal vibration, the device that protects on its base plays better protection effect.
Drawings
FIG. 1 is a cross-sectional view of the apparatus of the present invention;
FIG. 2 is a top view of the apparatus of the present invention;
FIG. 3 is a schematic view of the plate retractor of the present invention;
FIG. 4 is a schematic view of the structure of the present invention;
FIG. 5 is a schematic structural diagram of a stirring dissipation structure according to the present invention;
FIG. 6 is a cross-sectional view of the valve switch of the present invention;
FIG. 7 is a schematic structural view of a damping fluid collecting device;
FIG. 8 is a side cross-sectional view of the damping fluid contaminant trap.
Wherein: 1-1 piston, 1-2 damping plate, 1-3 spring, 1-4 decompression layer, 1-5 culvert, 1-6 lower culvert mouth, 1-7 damping liquid, 1-8 expansion device, 1-9 input shaft, 1-10 input shaft sleeve, 1-11 upper damping cylinder, 1-12 lower damping cylinder, 1-13 stirring dissipation structure, 1-14 damping liquid impurity collecting device, 1-15 valve switch, 1-16 damping liquid input port, 1-17 collector, 1-18 upper culvert mouth, 3-1 elastic lifting device, 3-2 sealing gasket, 3-3 hexagon screw, 3-4 hexagon nut, 5-1 cylindrical roller bearing, 5-2 plane bearing, 5-3 shaft sleeve, 5-4 flange nut, 5-5 stirring paddles, 6-1 output port, 6-2 first pipeline, 6-3 rotating shaft device, 6-4 second pipeline, 6-5 vertical threads, 6-6 vertical thread fit port, 6-7 horizontal threads, 6-8 horizontal thread fit port, 6-8 spring baffle plate, 7-1 hinge upper plate, 7-3 spring, 7-4 hinge lower plate, 7-5 damping fluid baffle plate, 7-6 handle, 7-7 groove collector and 7-8 rolling ball.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the invention provides an integral vibration damping cylinder stirring type base vibration damping device, which comprises a vibration damping cylinder and an integrated piston, wherein the vibration damping cylinder comprises an upper vibration damping cylinder 1-11 and a lower vibration damping cylinder 1-12, the upper vibration damping cylinder 1-11 and the lower vibration damping cylinder 1-12 are integrally formed, the lower vibration damping cylinder 1-12 is arranged at four corners of the upper vibration damping cylinder 1-11, the upper vibration damping cylinder 1-12 is internally provided with the piston 1-1, and the piston 1-1 is attached and sealed with the inner wall of the upper vibration damping cylinder 1-11; the middle part of the piston 1-1 is provided with a decompression layer 1-4, and the decompression layer 1-4 is connected with a target device needing vibration reduction; a vibration reduction plate 1-2 is fixed on an upper opening of the upper vibration reduction cylinder 1-11 on the outer peripheral side of the decompression layer 1-4, springs 1-3 are uniformly arranged in the vibration reduction plate 1-2, the upper opening of the upper vibration reduction cylinder 1-11 is sealed by the polymer resin decompression material, and a space surrounded by the upper side surface of the piston 1-1, the vibration reduction plate 1-2 and the inner wall of the upper vibration reduction cylinder 1-11 is an upper chamber of the upper vibration reduction cylinder 1-11; a telescopic device 1-8 is arranged between the upper vibration damping cylinder 1-11 and the lower vibration damping cylinder 1-12, the telescopic device 1-8 divides the space inside the upper vibration damping cylinder 1-11 and the lower vibration damping cylinder 1-12, the space enclosed by the telescopic device 1-8, the lower surface of the piston 1-1 and the inner side wall of the upper vibration damping cylinder 1-11 is a lower cavity, and damping liquid 1-7 is filled in the lower cavity; the lower side surface of the telescopic device 1-8 and the lower vibration damping cylinder 1-12 form a closed cavity, and damping fluid 1-7 is filled in the closed cavity.
As shown in fig. 3, the telescopic device includes an elastic lifting device 3-1, a sealing gasket 3-2, a hexagon screw 3-3 and a hexagon nut 3-4, the elastic lifting device 3-1 is a cylindrical telescopic device, and is extended by a downward pressure, and the elastic lifting device recovers its original shape when the pressure disappears or the length thereof is reduced; the upper part of the lifting device 3-1 is fixed on an upper supporting platform, the peripheral side of the upper supporting platform is fixed on the inner side wall of a lower vibration damping cylinder 1-12, the middle part of the supporting platform is provided with an opening, and the shape and the size of the opening are the same as those of the upper opening of the elastic lifting device 3-1; the lower part of the lifting device 3-1 is fixed on a lower supporting platform, the shape and the size of the lower supporting platform are the same as those of the lower opening of the elastic lifting device 3-1, and the lower opening of the lifting device 3-1 is sealed by the lower supporting platform; the input shaft 1-9 is fixed in the middle of the lower supporting platform through a plurality of groups of hexagon screws 3-3 and hexagon nuts 3-4, and a sealing gasket 3-2 is arranged between the input shaft 1-9 and the lower supporting platform and used for preventing damping fluid from leaking.
As shown in fig. 1 and 4, a duct 1-5 is arranged on the piston 1-1, and the duct 1-5 is communicated with the upper chamber and the lower chamber; the culvert 1-5 is in an S shape, the culvert is respectively provided with an upper culvert port 1-18 and a lower culvert port 1-6, the diameter of the culvert 1-5 is gradually narrowed from top to bottom, and the concrete proportion is specifically designed according to the actual structure; an electromagnetic switch is arranged on the lower culvert and road junction 1-6, and a pressure sensor is arranged and used in cooperation with the electromagnetic switch for detecting the pressure of the damping liquid; the upper culvert mouth 1-18 is provided with a gravity sensor, and the lower culvert mouth is a circular hole.
As shown in fig. 5, the stirring dissipation structure 1-13 includes an input shaft sleeve 1-10, a cylindrical roller bearing 5-1, a plane bearing 5-2, a shaft sleeve 5-3, a flange nut 5-4 and a stirring paddle 5-5, wherein the inner side of the input shaft sleeve 1-10 is provided with an internal thread, and the internal thread is matched with an external thread arranged on the outer peripheral surface of the input shaft 1-9; the flange is arranged in the lower vibration damping cylinder 1-12, the shaft sleeve 5-3 is fixed on the flange in a hanging way by a flange nut 5-4, the inner side of the shaft sleeve 5-3 is sequentially fixed with a cylindrical roller bearing 5-1 and a plane bearing 5-2, the shaft sleeve 1-10 of the input shaft is provided with an extension rod, and the tail end of the extension rod is fixed with a stirring paddle 5-5.
When the host vibrates, the host base is acted by external force, firstly, the transverse vibration of the host is reduced through the vibration reduction plate 1-2, then, the external force is transmitted into the upper vibration reduction cylinder 1-11 through the piston, the vibration is reduced by compressing the damping liquid 1-7 in the upper vibration reduction cylinder 1-11, when the pressure of the upper vibration reduction cylinder 1-11 reaches a certain value, the electromagnetic switch in the duct 1-5 on the piston 1-1 is opened, so that the damping liquid 1-7 enters the duct 1-5 through the duct 1-5 and flows to the upper chamber through the duct 1-5. When the vibration of the host machine base is intensified, the telescopic device pushes the input shafts 1-9 to move downwards, due to the mutual matching of the external threads of the input shafts 1-9 and the internal threads of the input shaft sleeves 1-10, the linear motion of the input shafts 1-9 is converted into the rotary motion of the input shaft sleeves 1-10, the input shaft sleeves 1-10 drive the stirring paddles 5-5 to rotate, the damping liquid 1-7 is stirred to realize the energy dissipation, and the vibration reduction effect is further achieved.
After vibration reduction is finished, the piston 1-1 and the spring structures 1-3 on the left side and the right side of the piston are used for rebounding to the upper surface, the pressure in the lower cavity is reduced, and the expansion device is restored to the initial state under the action of elastic restoring force. Damping fluid flows into the upper chamber through the lower duct port during vibration reduction; after vibration reduction is finished, when rebounding, the damping fluid flows back to the lower strong cavity through the upper cavity.
The lower part of the middle position of the upper vibration damping cylinder 1-11 is provided with a damping fluid replacing collector, the damping fluid replacing collector comprises collectors 1-17 and a valve switch, and the valve switch 1-15 comprises an output port 6-1, a first pipeline 6-2, a rotating shaft 6-3, a second pipeline 6-4, transverse threads 6-7, a transverse thread fit opening 6-8 and a vertical thread fit opening 6-6. The first pipeline 6-2 comprises an inclined part and a vertical part which are communicated with each other; the first pipeline 6-2 and the second pipeline 6-4 are centrosymmetric, and a circular truncated cone-shaped through hole is formed between the first pipeline 6-2 and the second pipeline; the valve switch is characterized in that a boss is arranged in the switch, the axis of the boss is positioned on the same straight line with the circular truncated cone-shaped through hole, the boss is meshed with a rotating shaft device 6-3 through a transverse thread 6-7, the left side of the rotating shaft device 6-3 is circular truncated cone-shaped, and the boss is matched with the circular truncated cone-shaped through hole to realize the opening and closing of the circular truncated cone-shaped through hole. An output port 6-1 is arranged on the upper side of the first pipeline 6-2; the lower side of the second pipeline 6-4 is provided with a vertical thread matching opening 6-6, and the vertical thread matching opening 6-6 is meshed with a vertical thread 6-5 on the collector 1-17.
In order to ensure the normal operation of the structure, the replacement of the damping fluid is an indispensable work. When the damping liquid is replaced, the rotating shaft device is rotated to communicate the first pipeline 6-2 with the second pipeline 6-4, the damping liquid flows into the collector 1-17 through the leakage port, the collector 1-17 is detached to replace the damping liquid, and when the damping liquid is added, the replacement is finally completed through the damping liquid inlet 1-16.
The lower vibration reduction cylinder 1-12 is provided with a damping liquid impurity collecting device 1-14, the damping liquid impurity collecting device comprises a spring hinge device, and the spring hinge device comprises a spring barrier plate 7-1, a spring 7-3, a hinge upper plate 7-2, a hinge lower plate 7-4, a damping liquid barrier plate 7-5, a handle 7-6, a groove collector 7-7 and a rolling ball 7-8. The hinge upper plate 7-2 is arranged on the side wall of the lower damping cylinder 1-12 through a screw, the hinge upper plate 7-2 and the hinge lower plate 7-4 are connected together through a rotating shaft, and the hinge lower plate 7-4 can rotate; the spring blocking plate 7-1 is welded on the side wall of the lower vibration damping cylinder 1-12, the lower side of the spring blocking plate is attached to the upper edge of the upper plate 7-2 of the hinge, and the upper end of the spring 7-3 is welded on the lower side of the spring blocking plate 7-1; the damping liquid baffle plate 7-5 is of a plate-shaped structure and can be inserted into a groove arranged on the side wall of the lower vibration damping cylinder 1-12 to realize the sealing of the lower side of the lower vibration damping cylinder 1-12; a groove collector 7-7 is arranged below the damping liquid baffle 7-5, and the lower part of the groove collector 7-7 is contacted with a rolling ball 7-8 arranged at the bottom of a lower vibration reduction cylinder 1-12.
During use, impurities generated by stirring of the stirring paddle 5-5 and the damping liquid affect structural performance, therefore, the impurities are cleaned according to the selected damping liquid, the damping liquid baffle 7-5 is inserted during cleaning, the baffle 7-5 breaks through the resistance of the hinge and is inserted into the channel to isolate the damping liquid, then the groove collector 7-7 is drawn out by utilizing the sliding property of the rolling ball 7-8 to clean the impurities, the impurities are placed into the channel again after cleaning, the baffle is drawn out, and the hinge blocks the insertion hole again under the pressure of the spring and the damping liquid.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A vibration damping cylinder stirring type base vibration attenuation device comprises a base body, wherein a host is fixed above the base body, and the vibration damping cylinder is characterized by comprising a vibration damping cylinder and a piston, wherein the vibration damping cylinder comprises an upper vibration damping cylinder and a lower vibration damping cylinder, the upper vibration damping cylinder and the lower vibration damping cylinder are integrally formed, the lower vibration damping cylinder is uniformly distributed on the lower surface of the upper vibration damping cylinder, the piston is arranged in the upper vibration damping cylinder, the upper part of the piston is connected with the host, and the piston is attached and sealed with the inner wall of the upper vibration damping cylinder; a damping plate is fixed on the opening of the upper damping cylinder, and the main machine is fixed on the damping plate; a telescopic device is arranged between the upper vibration damping cylinder and the lower vibration damping cylinder, the telescopic device divides the space inside the upper vibration damping cylinder and the lower vibration damping cylinder, and the space enclosed by the telescopic device, the lower surface of the piston and the inner side wall of the upper vibration damping cylinder is a lower cavity chamber; the telescopic device also comprises a stirring dissipation structure which comprises an input shaft, an input shaft sleeve, a cylindrical roller bearing, a plane bearing, a shaft sleeve, a flange nut and a stirring paddle, wherein the inner side of the input shaft sleeve is provided with an internal thread which is matched with an external thread arranged on the peripheral surface of the input shaft; the flange is arranged in the lower vibration damping cylinder, the shaft sleeve is fixed on the flange in a hanging manner by a flange nut, a plane bearing and a cylindrical roller bearing are sequentially fixed on the inner side of the shaft sleeve, an extension rod is arranged on the shaft sleeve of the input shaft, and a stirring paddle is fixed at the tail end of the extension rod; damping liquid is filled in the lower vibration reduction cylinder, and the stirring paddle is immersed by the damping liquid.
2. The vibration damping cylinder agitation type base vibration damping device as set forth in claim 1, wherein a decompression layer is provided on an upper portion of the piston; the outer peripheral side of the decompression layer is fixedly connected with a vibration reduction plate, the vibration reduction plate and the decompression layer jointly seal an opening of the upper vibration reduction cylinder, and a space surrounded by the upper side surface of the piston, the vibration reduction plate and the inner wall of the upper vibration reduction cylinder is an upper chamber of the upper vibration reduction cylinder; the upper chamber is filled with gas.
3. The vibration damping cylinder agitator base vibration attenuation device of claim 2, wherein the piston is provided with a duct, said duct communicating the upper chamber and the lower chamber; the culvert is S-shaped, the diameter of the culvert is gradually narrowed from top to bottom, a pressure sensor, a gravity sensor and a valve are installed in the culvert, and damping fluid is filled in the upper vibration reduction cylinder.
4. The vibration damping cylinder stirring type base vibration damping device as claimed in claim 1, wherein the elastic lifting device comprises an elastic lifting device, a sealing gasket, a hexagon screw and a hexagon nut, and the elastic lifting device is a cylindrical telescopic device which is extended by downward pressure, and the pressure disappears or is reduced to restore the original shape; the upper part of the elastic lifting device is fixed on an upper supporting platform, the peripheral side of the upper supporting platform is fixed on the inner side wall of the lower vibration damping cylinder, and the shape and the size of a middle opening of the upper supporting platform are the same as those of an upper opening of the elastic lifting device; the lower part of the elastic lifting device is fixed on the lower supporting platform, and the lower opening of the lifting device is sealed by the lower supporting platform; the input shaft is fixed in the middle of the lower supporting platform by the hexagon screws and the hexagon nuts, and a sealing gasket is arranged between the input shaft and the lower supporting platform.
5. The vibration damping cylinder stirring type base vibration damping device as claimed in claim 1, wherein a damping fluid replacement collector is arranged at the lower part of the middle position of the upper vibration damping cylinder, the damping fluid replacement collector comprises a collector and a valve switch, and the valve switch comprises an output port, a first pipeline, a rotating shaft device, a second pipeline, transverse threads, a transverse thread fit port and a vertical thread fit port; the first pipeline comprises an inclined part and a vertical part which are communicated with each other; the first pipeline and the second pipeline are centrosymmetric, and a circular truncated cone-shaped through hole is formed between the first pipeline and the second pipeline; the valve switch is characterized in that a boss is arranged at the middle part of the valve switch, the axis of the boss and the circular truncated cone-shaped through hole are positioned on the same straight line, the boss is meshed with the rotating shaft device through a transverse thread, the left side of the rotating shaft device is in a circular truncated cone shape, and the boss is matched with the circular truncated cone-shaped through hole to realize the opening and closing of the circular truncated cone-shaped through hole; an output port is arranged on the upper side of the first pipeline; and a vertical thread fit opening is formed in the lower side of the second pipeline and meshed with a vertical thread on the collector.
6. The apparatus as claimed in claim 1, wherein the lower vibration-damping cylinder is provided with a damping fluid impurity collecting means comprising a spring baffle, a spring, a hinge upper plate, a hinge lower plate, a damping fluid baffle, a handle, a groove collector and a rolling ball; the hinge upper plate is fixed on the side wall of the lower vibration damping cylinder, the hinge upper plate and the hinge lower plate are connected together through a rotating shaft, and the hinge lower plate can rotate; the spring blocking plate is welded on the side wall of the lower vibration damping cylinder, the lower side of the spring blocking plate is attached to the upper edge of the upper plate of the hinge, and the upper end of the spring is welded on the lower side of the spring blocking plate; the damping liquid resistance partition plate is of a plate-shaped structure and can be inserted into a groove formed in the side wall of the lower vibration reduction cylinder to seal the lower side of the lower vibration reduction cylinder; and a groove collector is arranged below the damping liquid resistance separation plate, and the lower part of the groove collector is in contact with a rolling ball arranged at the bottom of the lower vibration damping cylinder.
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| CN202110787946.7A CN113531029B (en) | 2021-07-12 | 2021-07-12 | Vibration damping cylinder stirring type base vibration attenuation device |
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