CN117824811B - Damping device based on hydraulic throttling principle - Google Patents
Damping device based on hydraulic throttling principle Download PDFInfo
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- CN117824811B CN117824811B CN202410254923.3A CN202410254923A CN117824811B CN 117824811 B CN117824811 B CN 117824811B CN 202410254923 A CN202410254923 A CN 202410254923A CN 117824811 B CN117824811 B CN 117824811B
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- damping device
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- cavity
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- 238000013016 damping Methods 0.000 title claims abstract description 35
- 238000007667 floating Methods 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 208000032826 Ring chromosome 3 syndrome Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a damping device based on a hydraulic throttling principle, which relates to the field of wind tunnel balance calibration and comprises the following components: the oil cylinder is internally provided with an upper cavity and a lower cavity through a step transition section; a floating piece which is arranged between the upper cavity and the lower cavity and has a H-shaped structure in the longitudinal section; a throttle ring disposed on an upper surface of the stepped transition section and located at a periphery of the float member, the throttle ring being configured to be coupled to the four-jaw chuck; a cover plate matched with the oil cylinder; the floating piece is connected with an external mechanism through a connecting rod penetrating through the cover plate, and the four-jaw chuck is connected with an external power mechanism through a matched transmission rod. The invention provides a damping device based on a hydraulic throttling principle, which mainly has a load holding function and a weight swing inhibiting function in a loading process.
Description
Technical Field
The invention relates to the field of wind tunnel balance calibration. More particularly, the present invention relates to a damping device based on hydraulic throttling principles.
Background
The automatic calibration device for the balance based on the net weight of the weight is a widely used automatic calibration device for the balance, and one calibration device is usually provided with a plurality of automatic loading devices for loading a plurality of components of the balance according to a certain position arrangement. As shown in fig. 5, the automatic loading device mainly comprises a boom 10, weights 11, a supporting frame 12, a driver 13, a damping oil groove 14 and the like. When the balance is calibrated, the upper end of the suspender is connected with a corresponding loading hanging point. The principle is that a driver arranged on each layer of tray of a supporting frame of a loading device is used for controlling each weight to lift so as to complete the loading and unloading in the static calibration process of the balance: the driver puts down the weight, and the conical nest at the bottom center of the weight is automatically guided and hung on the suspender after contacting with the conical disc on the suspender to realize loading of the balance, and the driver jacks up the weight, so that the weight is separated from the loading suspender at the moment, and the balance is unloaded. Because weights with different masses are required to be exchanged in the process of loading and unloading a balance, different stress is caused among a plurality of suspenders in the process of exchanging, and the suspenders and weights hung on the suspenders can swing due to reset movement and the like after the balance is deformed during loading and unloading, one mode is to stabilize the swinging suspenders and weights by utilizing a damping oil groove at the bottom of the device at present.
As shown in fig. 6, the conventional damping oil sump is a passive damping device in which a damping oil sump 14 filled with engine oil is fixed to the bottom of a supporting frame, and a damping sheet 15 installed at the bottom of a boom and immersed in the engine oil of the oil sump generates viscous resistance when swinging along with the boom, and the swing of the boom is passively suppressed by the viscous resistance. Because the space is limited, the size of the damping oil groove is not big enough, and compared with a large load loading state with the magnitude of 500kg or more, the damping effect of viscous resistance generated by oil is poor, the weight stabilizing time is longer, and the loading efficiency is not high. Meanwhile, the existing damping device has no load holding function, namely, the increasing or decreasing trend in balance loading can be interrupted due to sudden change of loading load caused by weight exchange in the balance calibration process, even the instant overload of individual components of the calibrated balance can be caused, and the existing device cannot effectively process.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a damping device based on a hydraulic throttling principle, comprising:
The oil cylinder is internally provided with an upper cavity and a lower cavity through a step transition section;
a floating piece which is arranged between the upper cavity and the lower cavity and has a H-shaped structure in the longitudinal section;
A throttle ring disposed on an upper surface of the stepped transition section and located at a periphery of the float member, the throttle ring being configured to be coupled to the four-jaw chuck;
a cover plate matched with the oil cylinder;
The floating piece is connected with an external mechanism through a connecting rod penetrating through the cover plate, and the four-jaw chuck is connected with an external power mechanism through a matched transmission rod.
Preferably, the throttle ring includes: at least four identical 1/4 annular restriction;
The lower surface of each throttling plate is attached to the upper surface of the step transition section, and the upper surface of each throttling plate is fixedly connected with four connecting claws of the four-claw chuck respectively.
The invention at least comprises the following beneficial effects: the hydraulic throttling principle-based damping device has the main technical advantages that the hydraulic principle and the throttling principle are combined by controlling the locking and loosening of the throttling ring, the change from the original passive damping device to the existing active damping device is realized, and the hydraulic throttling principle-based damping device is compact in structure, low in processing cost and convenient to install and maintain.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic cross-sectional view of a damping device of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1 and is a schematic view showing the structure of the choke ring when it is fully locked;
FIG. 3 is a schematic view of the installation of the damping device of the present invention;
FIG. 4 is a schematic view showing a state in which a throttle ring is fully opened in a damping device according to the present invention;
FIG. 5 is a schematic diagram of an automatic loading device in a prior art automatic calibration system for a dry weight balance;
FIG. 6 is a schematic view of an installation of a prior art damping device;
The hydraulic damping device comprises an oil cylinder-1, a floating body-2, a throttling ring-3, a connecting claw-4, a four-claw chuck-5, a connecting rod-6, a cover plate-7, a transmission rod-8, a motor-9, a suspender-10, a weight-11, a supporting frame-12, a driver-13, a damping oil groove-14 and a damping sheet-15.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It should be noted that, in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "engaged/connected," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be an integral connection, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, may be a communication between two elements, and for one of ordinary skill in the art, the specific meaning of the terms in this disclosure may be understood in a specific case.
The invention provides a device with an active damping function, which aims at the problems encountered in the use process of the original device, and has the structure shown in figures 1-2, and comprises an oil cylinder 1, a floating body 2, a throttling ring 3, a connecting claw 4, a four-claw chuck 5, a connecting rod 6, a cover plate 7 and a transmission rod 8, wherein engine oil is filled in the oil cylinder in actual application, the liquid level of the engine oil is higher than that of the floating body and lower than that of the transmission rod, and the device with the active damping function mainly has the functions of maintaining the load in the loading process and inhibiting the swing of weights.
Specifically, the cylinder is of a cylindrical structure with an opening at the upper side, an upper cavity and a lower cavity are arranged in the cylinder, a platform is arranged between the upper cavity and the lower cavity, and the diameter of the lower cavity is smaller than that of the upper cavity.
The floating body is a cylindrical structure with round weight-reducing grooves at the upper and lower parts, is fixedly connected with the connecting rod, and is freely suspended between the upper cavity and the lower cavity of the oil cylinder after being fixedly connected with the suspender of the automatic loading device through the connecting rod.
The throttle ring is formed by combining four throttle plates with the same 1/4 annular structure, and is positioned around the outer surface of the cylinder of the floating body, the lower surface of the throttle ring is attached to the surface of a platform between the upper cavity and the lower cavity of the oil cylinder, and the upper surfaces of the four throttle plates are fixedly connected with four connecting claws of the four-claw chuck respectively.
The four-jaw chuck is a market goods shelf product, is inversely and fixedly arranged on the lower surface of the cover plate, and is respectively and fixedly connected with the four throttling sheets through four connecting jaws.
The cover plate is fixedly connected with the oil cylinder through a flange and is provided with a threaded hole connected with the supporting frame.
In practical application, as shown in fig. 3, the damping device of the invention is arranged on the lower surface of the bottom tray of the supporting frame of the automatic calibration system of the net weight balance, is connected with a motor 9 with a speed reducer through a transmission rod, and is fixedly connected with a suspender of the loading device through a connecting rod.
The device has three main functions:
1. When the throttle ring is closed, the instantaneous movement of the floating body up and down is limited based on the hydraulic principle, so that the load holding function is realized;
2. when the throttling ring is semi-closed, based on the small-clearance throttling principle, the up-and-down vibration of the floating body can be rapidly eliminated, and a damping effect is achieved;
3. when the throttle ring is closed and then slowly released, the swing of the floating body can be restrained.
Specifically, the main working method of the damping device comprises the following steps:
Before the weight is controlled by the driver to carry out loading or unloading operation, when the motor drives the four-jaw chuck to drive the throttling ring formed by the throttling plates to be closed to a locking position, the throttling ring seals an annular gap between the lower cavity of the oil cylinder and the floating body, and at the moment, the lower cavity of the oil cylinder is in a sealing state (shown in figures 1 and 2). Based on the hydraulic principle, relative motion cannot be generated between the floating body and the oil cylinder, the load loaded and unloaded by the weight is born by the support frame of the fixed damping device, the load born by the balance is still kept to be the last loading working condition, and the damping device realizes the load holding function of the loading device.
After the weight loading or unloading action is finished, the throttling plate is driven to radially move outwards through the four-jaw chuck, the throttling ring is gradually and slowly released, the floating body locked by the throttling ring is slowly released to a free state, in the process, the gap between the floating body and the throttling plate is still in a certain range, based on the throttling principle, the load of loading/unloading is gently applied to the balance through the loading suspender, and meanwhile the suspender shaking caused in the load releasing process can be effectively restrained.
When the throttling ring is gradually opened to a semi-closed state until the throttling ring is in a fully opened state (as shown in fig. 4), the throttling effect of the throttling ring gradually disappears, the floating body is in a free suspension state, and the damping device cannot influence the loading load of the balance. The horizontal swing or up-down swing of the suspender and the floating body can be caused in the calibration and reset process of the balance, the motor throttling ring can be controlled to be locked again, then the throttling ring is slowly loosened, and the effect of inhibiting the suspender from swinging and swinging can be effectively achieved by adjusting the speed of controlling the loosening of the throttling ring.
The above is merely illustrative of a preferred embodiment, but is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (1)
1. A damping device based on hydraulic throttling principle, characterized by comprising:
The oil cylinder is internally provided with an upper cavity and a lower cavity through a step transition section;
a floating piece which is arranged between the upper cavity and the lower cavity and has a H-shaped structure in the longitudinal section;
A throttle ring disposed on an upper surface of the stepped transition section and located at a periphery of the float member, the throttle ring being configured to be coupled to the four-jaw chuck;
a cover plate matched with the oil cylinder;
The four-jaw chuck is connected with an external power mechanism through a matched transmission rod;
the throttle ring includes: at least four identical 1/4 annular restriction;
The lower surface of each throttling plate is attached to the upper surface of the step transition section, and the upper surface of each throttling plate is fixedly connected with four connecting claws of the four-claw chuck respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410254923.3A CN117824811B (en) | 2024-03-06 | 2024-03-06 | Damping device based on hydraulic throttling principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410254923.3A CN117824811B (en) | 2024-03-06 | 2024-03-06 | Damping device based on hydraulic throttling principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117824811A CN117824811A (en) | 2024-04-05 |
| CN117824811B true CN117824811B (en) | 2024-05-03 |
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| CN202410254923.3A Active CN117824811B (en) | 2024-03-06 | 2024-03-06 | Damping device based on hydraulic throttling principle |
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Citations (16)
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| US4848495A (en) * | 1987-09-19 | 1989-07-18 | Yamato Scale Company, Limited Of Akashi, Japan | Hydraulic damper |
| DE4023924A1 (en) * | 1990-07-27 | 1991-02-14 | Hottinger Messtechnik Baldwin | Measurement transducer for mechanical parameters - contains electrically deformable element, electro-rheological damping medium in electric field controlled according to temp. |
| KR20040003749A (en) * | 2002-07-04 | 2004-01-13 | 최범수 | Upper dish scale having less shaking function |
| DE202005008399U1 (en) * | 2005-05-25 | 2006-10-05 | Alfit Ag | Cylindrical damper used with moving furniture parts, includes piston with loosely-held ring seal and bypass causing damping as function of velocity, direction and resilient passage deformation |
| CN200961628Y (en) * | 2006-09-25 | 2007-10-17 | 湖南大学 | Outer gap throttling cavity inner hole type oil return liquid static pressure bearing |
| CN201636261U (en) * | 2009-12-07 | 2010-11-17 | 奇瑞汽车股份有限公司 | Bush type hydraulic damping suspension |
| CN103017883A (en) * | 2012-12-14 | 2013-04-03 | 中国铁道科学研究院 | Machine and electricity combination type standard rail weighbridge adopting scale lever principle |
| CN103075457A (en) * | 2012-10-23 | 2013-05-01 | 镇江铁科橡塑制品有限公司 | Leak-proof hydraulic auxiliary shock absorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957231B (en) * | 2010-06-30 | 2012-06-20 | 福建省计量科学研究院 | Method for detecting large fixed electronic weighing apparatus |
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2024
- 2024-03-06 CN CN202410254923.3A patent/CN117824811B/en active Active
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| DE4023924A1 (en) * | 1990-07-27 | 1991-02-14 | Hottinger Messtechnik Baldwin | Measurement transducer for mechanical parameters - contains electrically deformable element, electro-rheological damping medium in electric field controlled according to temp. |
| KR20040003749A (en) * | 2002-07-04 | 2004-01-13 | 최범수 | Upper dish scale having less shaking function |
| DE202005008399U1 (en) * | 2005-05-25 | 2006-10-05 | Alfit Ag | Cylindrical damper used with moving furniture parts, includes piston with loosely-held ring seal and bypass causing damping as function of velocity, direction and resilient passage deformation |
| CN200961628Y (en) * | 2006-09-25 | 2007-10-17 | 湖南大学 | Outer gap throttling cavity inner hole type oil return liquid static pressure bearing |
| CN201636261U (en) * | 2009-12-07 | 2010-11-17 | 奇瑞汽车股份有限公司 | Bush type hydraulic damping suspension |
| CN103075457A (en) * | 2012-10-23 | 2013-05-01 | 镇江铁科橡塑制品有限公司 | Leak-proof hydraulic auxiliary shock absorber |
| CN103017883A (en) * | 2012-12-14 | 2013-04-03 | 中国铁道科学研究院 | Machine and electricity combination type standard rail weighbridge adopting scale lever principle |
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| CN104088904A (en) * | 2014-06-23 | 2014-10-08 | 湖南宗胜制造有限公司 | Inner restrictor hydrostatic cylindrical guide rail |
| CN204495439U (en) * | 2015-04-15 | 2015-07-22 | 刘纪昕 | Novel anti-sway damped balance |
| CN110359869A (en) * | 2019-07-05 | 2019-10-22 | 中国石油大学(北京) | A kind of throttle valve grasping mechanism |
| CN212959641U (en) * | 2020-06-24 | 2021-04-13 | 王超霞 | Hydraulic damper valve, double-cylinder hydraulic damper and single-cylinder hydraulic damper |
| CN212988758U (en) * | 2020-07-03 | 2021-04-16 | 中国船舶重工集团公司第七0四研究所 | Land test device for submersible hoisting system |
| CN115931203A (en) * | 2023-03-15 | 2023-04-07 | 中机试验装备股份有限公司 | High-precision mass balance system |
| CN117073970A (en) * | 2023-10-16 | 2023-11-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Load holding, vibration suppressing and fast stabilizing method for large mass loading head |
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