CN108131420B - A kind of buffer unit having effective energy-absorbing characteristic - Google Patents
A kind of buffer unit having effective energy-absorbing characteristic Download PDFInfo
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- 230000007246 mechanism Effects 0.000 claims abstract description 14
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
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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
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
- F16F15/161—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material characterised by the fluid damping devices, e.g. passages, orifices
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
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Abstract
Description
技术领域technical field
本发明涉及结构振动冲击缓冲控制领域，特别涉及一种具备高效吸能特性的缓冲装置。The invention relates to the field of structure vibration shock buffer control, in particular to a buffer device with high-efficiency energy absorption characteristics.
背景技术Background technique
随着当前科技的不断发展进步，机械动力系统在运行以及外界能量输入时产生的振动严重影响到了仪器的平稳运行。目前增加阻尼装置是有效抑制振动的措施之一；但是由于激励复杂，传统被动隔振装置难以获得良好的阻尼特性；主动控制虽然效果较好，但结构复杂，能耗较大。因此需要一种结构简单，同时具备良好阻尼特性的减振隔震装置。磁流变扭转减振器件属于半主动控制器件，在工作中可以提供良好的阻尼特性。磁流变扭转减振器要应用在直线往复振动场合，一般还需要与运动转换机构配合，由于现有的磁流变扭转减振器与运动转换机构单独安装配合，导致安装尺寸过大，且设计复杂，难以满足仪器精密化、小型化的要求。With the continuous development and progress of current technology, the vibration generated by the mechanical power system during operation and external energy input seriously affects the smooth operation of the instrument. At present, adding a damping device is one of the measures to effectively suppress vibration; however, due to the complexity of the excitation, it is difficult for the traditional passive vibration isolation device to obtain good damping characteristics; although the effect of active control is better, the structure is complex and the energy consumption is large. Therefore, there is a need for a vibration-absorbing and shock-isolating device with a simple structure and good damping characteristics. The magneto-rheological torsional vibration damping device is a semi-active control device, which can provide good damping characteristics in operation. If the magnetorheological torsional damper is to be applied in the occasion of linear reciprocating vibration, it generally needs to cooperate with the motion conversion mechanism. Because the existing magnetorheological torsional damper and the motion conversion mechanism are installed separately, the installation size is too large, and The design is complex, and it is difficult to meet the requirements of precision and miniaturization of the instrument.
发明内容Contents of the invention
有鉴于此，本发明的目的在于提供一种具备高效吸能特性的缓冲装置，可以将往复的振动冲击转化为平稳的旋转运动，实现全过程平稳减振，同时还可以有效缩小装置的整体体积，设计简单，满足仪器精密化、小型化的要求。In view of this, the object of the present invention is to provide a buffer device with high-efficiency energy absorption characteristics, which can convert the reciprocating vibration impact into a smooth rotational motion, realize smooth vibration reduction in the whole process, and at the same time effectively reduce the overall volume of the device , the design is simple and meets the requirements of precision and miniaturization of the instrument.
本发明的缓冲装置，包括磁流变扭转减振器和用于将振动产生的直线运动转换为旋转运动以使磁流变扭转减振器对振动进行抑制的运动转换机构；所述运动转换机构为滚珠丝杆副结构并包括用于承受振动载荷的丝杠和用于将丝杠的直线运动转变为旋转运动的螺母，所述螺母固定连接于所述磁流变扭转减振器的转轴并同步转动；所述丝杠同轴穿过转轴并与螺母配合相连。The buffer device of the present invention includes a magneto-rheological torsional shock absorber and a motion conversion mechanism for converting the linear motion generated by vibration into rotational motion so that the magnetorheological torsional shock absorber can suppress the vibration; the motion conversion mechanism It is a ball screw pair structure and includes a lead screw for bearing vibration loads and a nut for converting the linear motion of the lead screw into rotational motion, the nut is fixedly connected to the rotating shaft of the magneto-rheological torsional shock absorber and Rotate synchronously; the lead screw coaxially passes through the rotating shaft and is connected with the nut.
进一步，所述螺母固定在转轴的两端，所述丝杠的两端均穿出转轴并与螺母配合相连。Further, the nut is fixed at both ends of the rotating shaft, and both ends of the lead screw pass through the rotating shaft and are mated and connected with the nut.
进一步，所述磁流变扭转减振器包括减振器缸体和设在减振器缸体内的定子及内筒，所述定子与减振器缸体固定连接，并且定子的外圆上设有电磁线圈；所述转轴与内筒固定连接并配合形成磁流变扭转减振器的转子组件；所述转轴同轴穿过定子的内孔，且转轴位于内孔的部分设有用于螺旋推动减振器缸体内磁流变液的螺旋条；所述内筒套在定子外，定子的内孔、定子与内筒之间以及内筒与减振器缸体之间设有相连通的间隙，磁流变液填充在间隙中并可在螺旋条的推动下流动。Further, the magneto-rheological torsional shock absorber includes a shock absorber cylinder, a stator and an inner cylinder arranged in the shock absorber cylinder, the stator is fixedly connected to the shock absorber cylinder, and the outer circle of the stator Electromagnetic coils are provided; the rotating shaft is fixedly connected with the inner cylinder and cooperates to form the rotor assembly of the magneto-rheological torsional shock absorber; the rotating shaft passes through the inner hole of the stator coaxially, and the part of the rotating shaft located in the inner hole is provided with a screw Push the spiral strip of magnetorheological fluid in the cylinder of the shock absorber; the inner cylinder is sleeved outside the stator, and the inner hole of the stator, between the stator and the inner cylinder, and between the inner cylinder and the cylinder of the shock absorber are connected. In the gap, the magnetorheological fluid is filled in the gap and can flow under the push of the spiral strip.
进一步，所述减振器缸体包括外筒及分别固定在外筒两侧的左端盖和右端盖，所述定子的左端面与左端盖固定连接，且定子的左端面设有用于供定子与内筒之间的磁流变液进入定子内孔的通道槽。Further, the shock absorber cylinder includes an outer cylinder and a left end cover and a right end cover respectively fixed on both sides of the outer cylinder, the left end surface of the stator is fixedly connected with the left end cover, and the left end surface of the stator is provided with a The magnetorheological fluid between the barrels enters the channel slots in the inner bore of the stator.
进一步，所述内筒的右端面设有用于供转轴穿过的轴孔，且内筒的右端面设有用于供内筒与外筒之间的磁流变液进入内筒中的流通孔。Further, the right end surface of the inner cylinder is provided with a shaft hole for passing the rotating shaft, and the right end surface of the inner cylinder is provided with a flow hole for the magnetorheological fluid between the inner cylinder and the outer cylinder to enter the inner cylinder.
进一步，用于产生控制磁流变液的磁场为由所述电磁线圈和永磁体组成的复合磁路结构，所述永磁体为环形永磁体，所述定子沿径向由内向外依次设有用于安装永磁体的第一环形槽及用于安装电磁线圈的第二环形槽。Further, the magnetic field used to generate and control the magnetorheological fluid is a composite magnetic circuit structure composed of the electromagnetic coil and the permanent magnet, the permanent magnet is an annular permanent magnet, and the stator is arranged radially from inside to outside for The first annular groove for installing the permanent magnet and the second annular groove for installing the electromagnetic coil.
进一步，所述内筒的筒体为采用导磁材料制成的第一环形筒及采用非导磁材料制成的第二环形筒连接而成，且所述第二环形筒正对电磁线圈设置。Further, the cylinder body of the inner cylinder is formed by connecting a first annular cylinder made of a magnetically conductive material and a second annular cylinder made of a nonmagnetic material, and the second annular cylinder is arranged facing the electromagnetic coil .
进一步，所述第一环形筒采用低碳钢制成，所述第一环形筒与第二环形筒通过焊接方式相连。Further, the first annular cylinder is made of low carbon steel, and the first annular cylinder is connected to the second annular cylinder by welding.
进一步，所述内筒的圆筒设有若干镂空部，所述镂空部与电磁线圈对应设置并用于供磁力线穿过。Further, the cylinder of the inner cylinder is provided with several hollow parts, and the hollow parts are arranged correspondingly to the electromagnetic coils and are used for the passage of the magnetic field lines.
进一步，所述定子为采用铁氧体制成的铁芯。Further, the stator is an iron core made of ferrite.
本发明的缓冲装置，具有以下有益技术效果：The buffer device of the present invention has the following beneficial technical effects:
第一，磁流变扭转减振器与运动转换机构相配合，可以将往复的振动冲击转化为平稳的旋转运动，实现全过程平稳减振；First, the magnetorheological torsional shock absorber cooperates with the motion conversion mechanism, which can convert the reciprocating vibration impact into a smooth rotational motion, and realize the smooth vibration reduction in the whole process;
第二，运动转换机构采用滚珠丝杆副结构，可由有效将振动产生的直线往复运动转化为回转运动，传动精密性高，丝杠与转轴同轴设置且穿过转轴，可以有效缩小装置的整体体积，满足仪器精密化、小型化的要求，本发明结构紧凑，极大地扩展了减振器设计理论和应用范围，具有更为广阔的研究价值和应用前景；Second, the motion conversion mechanism adopts the ball screw pair structure, which can effectively convert the linear reciprocating motion generated by vibration into rotary motion. The transmission precision is high. The screw and the rotating shaft are coaxially arranged and pass through the rotating shaft, which can effectively reduce the overall size of the device. The volume meets the requirements of precision and miniaturization of instruments. The invention has a compact structure, which greatly expands the design theory and application range of shock absorbers, and has broader research value and application prospects;
第三，通过转轴的螺旋条推动磁流变液做循环流动，充分利用了磁流变液的流动和剪切工作模式，产生的阻尼力大，可以在等体积条件下实现较大扭矩的传递，可调范围宽；Third, the magnetorheological fluid is driven to circulate through the helical strip of the rotating shaft, which makes full use of the flow and shearing working mode of the magnetorheological fluid, and produces a large damping force, which can realize the transmission of large torque under the condition of equal volume , wide adjustable range;
第四，通过定子上的通道槽和内筒上的流通孔，处于减振器缸体内的磁流变液得以充分循环流动，有效避免了磁流变液沉降而带来的性能下降问题，使得装置运行的可靠性得到了保障；Fourth, through the passage grooves on the stator and the flow holes on the inner cylinder, the magnetorheological fluid in the shock absorber cylinder can fully circulate and flow, effectively avoiding the performance degradation caused by the settlement of the magnetorheological fluid. The reliability of the device operation is guaranteed;
第五，本装置输出阻尼力(力矩)可以通过改变电磁线圈的通电电流实现实时调节，具备半主动控制效果；Fifth, the output damping force (torque) of the device can be adjusted in real time by changing the energizing current of the electromagnetic coil, which has a semi-active control effect;
第六，电磁线圈和永磁体组成复合磁路结构，通过改变电磁线圈的通电电流大小和通电电流方向可改变线圈磁场与永磁磁场的叠加方式及叠加幅值，可实现装置在外载荷作用下在更大范围内的变阻尼运动功能；同时永磁体还可以起到失效保护的作用，即装置断电时，依然能够提供一定的阻尼力；Sixth, the electromagnetic coil and the permanent magnet form a composite magnetic circuit structure. By changing the magnitude and direction of the energized current of the electromagnetic coil, the superposition mode and superimposition amplitude of the coil magnetic field and the permanent magnetic field can be changed, and the device can be realized under the action of external load. Variable damping motion function in a wider range; at the same time, the permanent magnet can also play a role in failure protection, that is, when the device is powered off, it can still provide a certain damping force;
第七，采用多段不同材料焊接而成的内筒，有效改变了装置工作中电磁线圈产生的磁场的磁路，从而增大了磁流变液工作的有效区域，即增大装置产生的阻尼力(力矩)值；Seventh, the inner cylinder welded by multiple sections of different materials effectively changes the magnetic circuit of the magnetic field generated by the electromagnetic coil during the operation of the device, thus increasing the effective area of the magnetorheological fluid, that is, increasing the damping force generated by the device (moment) value;
第八，具有镂空部的内筒，电磁线圈及永磁体的磁力线可穿过内筒到达减振器缸体，从而形成多个有效剪切工作面，同样有效改变了装置工作中电磁线圈及永磁体产生磁场的磁路，增大了磁流变液工作的有效区域，增大装置产生的阻尼力(力矩)值；Eighth, the inner cylinder with a hollowed out part, the magnetic force lines of the electromagnetic coil and the permanent magnet can pass through the inner cylinder to reach the shock absorber cylinder, thereby forming multiple effective shear working surfaces, which also effectively changes the electromagnetic coil and permanent magnet during the operation of the device. The magnetic circuit in which the magnet generates a magnetic field increases the effective working area of the magnetorheological fluid and increases the damping force (torque) value generated by the device;
第九，定子采用铁氧体制成，相比于非传统的电工纯铁，在响应时间上得到极大的提高，实现了装置的快速响应。Ninth, the stator is made of ferrite. Compared with the non-traditional electrical pure iron, the response time is greatly improved, and the rapid response of the device is realized.
附图说明Description of drawings
下面结合附图和实施例对本发明作进一步描述：The present invention will be further described below in conjunction with accompanying drawing and embodiment:
图1为本发明第一种结构的示意图；Fig. 1 is the schematic diagram of first kind of structure of the present invention;
图2为本发明第一种结构的内筒的结构示意图；Fig. 2 is the structural representation of the inner cylinder of the first structure of the present invention;
图3为图2的A向视图；Fig. 3 is the A direction view of Fig. 2;
图4为本发明第二种结构内筒的立体结构示意图；Fig. 4 is the three-dimensional structure schematic diagram of the inner cylinder of the second structure of the present invention;
图5为本发明第二种结构内筒的平面结构示意图。Fig. 5 is a schematic plan view of the inner cylinder of the second structure of the present invention.
具体实施方式Detailed ways
图1为本发明的结构示意图，图2为本发明的内筒的结构示意图，图3为图2的A向视图，如图所示：本实施例的缓冲装置，包括磁流变扭转减振器和用于将振动产生的直线运动转换为旋转运动以使磁流变扭转减振器对振动进行抑制的运动转换机构；所述运动转换机构为滚珠丝杆副结构并包括用于承受振动载荷的丝杠1和用于将丝杠1的直线运动转变为旋转运动的螺母2，所述螺母2固定连接于所述磁流变扭转减振器的转轴3并同步转动；所述丝杠1同轴穿过转轴3并与螺母2配合相连；转轴3即为磁流变扭转减振器的转动部分，其转动使得磁流变液以流动、剪切或者混合的模式进行阻尼减振；丝杠1与转轴3的中心通孔之间不接触，防止发生干涉；螺母2可通过螺接方式与转轴3相连；当有冲击力输入到丝杆上时，丝杆沿图中左右方向做直线运动，并驱动螺母2做旋转运动，螺母2则带动转轴3旋转；为提高动力传递的平稳性和及时性，所述螺母2固定在转轴3的两端(图中为左右两端)，所述丝杠1的两端均穿出转轴3并与螺母2配合相连；磁流变扭转减振器与运动转换机构相配合，可以将往复的振动冲击转化为平稳的旋转运动，实现全过程平稳减振；运动转换机构采用滚珠丝杆副结构，可由有效将振动产生的直线往复运动转化为回转运动，传动精密性高，丝杠1与转轴3同轴设置且穿过转轴3，可以有效缩小装置的整体体积，满足仪器精密化、小型化的要求。Fig. 1 is a structural schematic diagram of the present invention, Fig. 2 is a structural schematic diagram of the inner cylinder of the present invention, and Fig. 3 is a view from the direction A of Fig. 2, as shown in the figure: the buffer device of this embodiment includes magnetorheological torsional vibration reduction A device and a motion conversion mechanism for converting the linear motion generated by the vibration into a rotary motion so that the magneto-rheological torsional damper can suppress the vibration; the motion conversion mechanism is a ball screw pair structure and includes a vibration load bearing A lead screw 1 and a nut 2 for converting the linear motion of the lead screw 1 into a rotary motion, the nut 2 is fixedly connected to the rotating shaft 3 of the magnetorheological torsional shock absorber and rotates synchronously; the lead screw 1 Coaxially passes through the rotating shaft 3 and is connected with the nut 2; the rotating shaft 3 is the rotating part of the magnetorheological torsional shock absorber, and its rotation makes the magnetorheological fluid perform damping and vibration reduction in the flow, shear or mixing mode; the wire There is no contact between the rod 1 and the central through hole of the rotating shaft 3 to prevent interference; the nut 2 can be connected to the rotating shaft 3 by screwing; when an impact force is input to the screw rod, the screw rod will make a straight line along the left and right directions in the figure movement, and drive the nut 2 to rotate, and the nut 2 drives the rotating shaft 3 to rotate; in order to improve the stability and timeliness of power transmission, the nut 2 is fixed on the two ends of the rotating shaft 3 (the left and right ends in the figure), so Both ends of the screw 1 pass through the rotating shaft 3 and are connected with the nut 2; the magneto-rheological torsional shock absorber cooperates with the motion conversion mechanism, which can convert the reciprocating vibration impact into a smooth rotational motion, and realize the whole process is stable. Vibration reduction; the motion conversion mechanism adopts the ball screw pair structure, which can effectively convert the linear reciprocating motion generated by vibration into rotary motion, and the transmission precision is high. The screw 1 and the shaft 3 are coaxially arranged and pass through the shaft 3, which can effectively reduce The overall volume of the device meets the requirements of precision and miniaturization of the instrument.
本实施例中，所述磁流变扭转减振器包括减振器缸体和设在减振器缸体内的定子4及内筒5，所述定子4与减振器缸体固定连接，并且定子4的外圆上设有电磁线圈6；所述转轴3与内筒5固定连接并配合形成磁流变扭转减振器的转子组件；所述转轴3同轴穿过定子4的内孔4a，且转轴3位于内孔4a的部分设有用于螺旋推动减振器缸体内磁流变液的螺旋条31；所述内筒5套在定子4外，定子4的内孔4a、定子4与内筒5之间以及内筒5与减振器缸体之间设有相连通的间隙6，磁流变液填充在间隙6中并可在螺旋条31的推动下流动；螺旋条31使得转轴3形成螺旋轴结构，具有螺旋输送的功能；螺旋条31上可顺着螺旋方向开槽，在槽中填充树脂形成树脂密封带，使螺旋条31与定子4内孔4a的孔壁之间密封；通过转轴3的螺旋条31推动磁流变液做循环流动，充分利用了磁流变液的流动和剪切工作模式，产生的阻尼力大，可以在等体积条件下实现较大扭矩的传递，可调范围宽。In this embodiment, the magneto-rheological torsional shock absorber includes a shock absorber cylinder, a stator 4 and an inner cylinder 5 disposed in the shock absorber cylinder, the stator 4 is fixedly connected to the shock absorber cylinder, And the outer circle of the stator 4 is provided with an electromagnetic coil 6; the rotating shaft 3 is fixedly connected with the inner cylinder 5 and cooperates to form the rotor assembly of the magneto-rheological torsional damper; the rotating shaft 3 coaxially passes through the inner hole of the stator 4 4a, and the part where the rotating shaft 3 is located in the inner hole 4a is provided with a helical bar 31 for screwing the magnetorheological fluid in the cylinder of the shock absorber; the inner cylinder 5 is set outside the stator 4, and the inner hole 4a of the stator 4, the stator 4 and the inner cylinder 5 and between the inner cylinder 5 and the shock absorber cylinder are provided with a communicating gap 6, the magnetorheological fluid is filled in the gap 6 and can flow under the push of the spiral strip 31; the spiral strip 31 The rotating shaft 3 forms a spiral shaft structure, which has the function of spiral conveying; the spiral strip 31 can be grooved along the spiral direction, and resin is filled in the groove to form a resin sealing belt, so that the gap between the spiral strip 31 and the hole wall of the inner hole 4a of the stator 4 Between the seals; through the helical strip 31 of the rotating shaft 3, the magnetorheological fluid is driven to circulate and flow, which makes full use of the flow and shearing working mode of the magnetorheological fluid, and generates a large damping force, which can achieve a large torque under the condition of equal volume The transfer, adjustable range is wide.
本实施例中，所述减振器缸体包括外筒7及分别固定在外筒7两侧的左端盖8和右端盖9，所述定子4的左端面与左端盖8固定连接，且定子4的左端面设有用于供定子4与内筒5之间的磁流变液进入定子4内孔4a的通道槽(图中未示出)；外筒7与左端盖8和右端盖9之间均可通过螺栓相连，且采用密封圈进行密封；转轴3与端盖之间可设置角接触轴承10及密封圈11，角接触轴承10及密封圈均可由卡环定位；通过通道槽，定子4与内筒5之间的磁流变液可进入定子4内孔4a，从而实现在装置作用时磁流变液始终在内孔4a中保持流动状态；此外，所述内筒5的右端面设有用于供转轴3穿过的轴孔5a，轴孔5a与转轴3之间通过紧固螺栓向相连；且内筒5的右端面设有用于供内筒5与外筒7之间的磁流变液进入内筒5中的流通孔5b，由此使得内筒5与外筒7之间的磁流变液也可流动，使得处于减振器缸体内的磁流变液得以充分循环流动，有效避免了磁流变液沉降而带来的性能下降问题，使得装置运行的可靠性得到了保障；流通孔5b可为周向均匀设置的六个或者其它合理个数。In this embodiment, the shock absorber cylinder includes an outer cylinder 7 and a left end cover 8 and a right end cover 9 respectively fixed on both sides of the outer cylinder 7, the left end surface of the stator 4 is fixedly connected with the left end cover 8, and the stator 4 The left end face is provided with a channel groove (not shown) for the magnetorheological fluid between the stator 4 and the inner cylinder 5 to enter the inner hole 4a of the stator 4; between the outer cylinder 7 and the left end cover 8 and the right end cover 9 Both can be connected by bolts and sealed by sealing rings; angular contact bearings 10 and sealing rings 11 can be arranged between the rotating shaft 3 and the end cover, and the angular contact bearings 10 and sealing rings can be positioned by snap rings; through the channel groove, the stator 4 The magnetorheological fluid between the inner cylinder 5 can enter the inner hole 4a of the stator 4, so that the magnetorheological fluid always keeps flowing in the inner hole 4a when the device works; in addition, the right end surface of the inner cylinder 5 is provided with a There is a shaft hole 5a for the shaft 3 to pass through, and the shaft hole 5a is connected to the shaft 3 through fastening bolts; The variable fluid enters the circulation hole 5b in the inner cylinder 5, so that the magnetorheological fluid between the inner cylinder 5 and the outer cylinder 7 can also flow, so that the magnetorheological fluid in the shock absorber cylinder can fully circulate , which effectively avoids the problem of performance degradation caused by magnetorheological fluid settlement, so that the reliability of device operation is guaranteed; the circulation holes 5b can be six uniformly arranged in the circumferential direction or other reasonable numbers.
本实施例中，用于产生控制磁流变液的磁场为由所述电磁线圈6和永磁体12组成的复合磁路结构；通过改变电磁线圈6的通电电流大小和通电电流方向可改变线圈磁场与永磁磁场的叠加方式及叠加幅值，可实现装置在外载荷作用下在更大范围内的变阻尼运动功能；同时永磁体12还可以起到失效保护的作用，即装置断电时，依然能够提供一定的阻尼力；所述永磁体12为环形永磁体12，所述定子4沿径向由内向外依次设有用于安装永磁体12的第一环槽及用于安装电磁线圈6的第二环槽，便于磁性部件的安装和更换；其中，第一环槽与第二环槽相通，电磁线圈6部分缠绕在永磁体12上；第一环槽可包括若干个周向均匀设置且径向截面为梯形或方向的单元槽，永磁体12由若干个独立的永磁体12单元置于单元槽中形成环形结构。In this embodiment, the magnetic field used to generate and control the magnetorheological fluid is a composite magnetic circuit structure composed of the electromagnetic coil 6 and the permanent magnet 12; the coil magnetic field can be changed by changing the magnitude and direction of the energizing current of the electromagnetic coil 6 The superimposition method and superimposition amplitude of the permanent magnet magnetic field can realize the variable damping movement function of the device in a wider range under the action of external load; at the same time, the permanent magnet 12 can also play the role of failure protection, that is, when the device is powered off, it will still A certain damping force can be provided; the permanent magnet 12 is an annular permanent magnet 12, and the stator 4 is sequentially provided with a first annular groove for installing the permanent magnet 12 and a first annular groove for installing the electromagnetic coil 6 along the radial direction from inside to outside. Two ring grooves are convenient for installation and replacement of magnetic parts; wherein, the first ring groove communicates with the second ring groove, and the electromagnetic coil 6 is partially wound on the permanent magnet 12; the first ring groove can include several circumferentially uniformly arranged and diameter To the unit slot with a trapezoidal or directional cross section, the permanent magnet 12 is placed in the unit slot by several independent permanent magnets 12 units to form an annular structure.
本实施例中，所述内筒5的圆筒体为由采用导磁材料制成的第一环形筒51及采用非导磁材料制成的第二环形筒52连接而成，且所述第二环形筒52正对电磁线圈6设置；内筒5采用多段不同材料焊接而成，有效改变了装置工作中电磁线圈6产生的磁场的磁路，从而增大了磁流变液的有效区域，即增大装置产生的阻尼力(力矩)值；优选地，所述第一环形筒51采用低碳钢制成，所述第二环形筒52采用非导磁材料制成，所述第一环形筒51与第二环形筒52通过焊接方式相连；此外，内筒5还可以为另一种结构，同样可以达到上述技术效果，即所述内筒5的圆筒设有若干镂空部53，所述镂空部3与电磁线圈6对应设置以使磁力线穿过，镂空部53为方形通孔(考虑结构强度，增加倒角)，正对与线圈6的内筒5上的环形部分均匀设有多个镂空部分53，电磁线圈及永磁体的磁力线可以穿过到达减振器缸体，从而形成多个有效的剪切工作面。In this embodiment, the cylindrical body of the inner cylinder 5 is formed by connecting a first annular cylinder 51 made of a magnetically permeable material and a second annular cylinder 52 made of a nonmagnetic material, and the first annular cylinder 52 is made of a nonmagnetic material. The two-ring cylinder 52 is set facing the electromagnetic coil 6; the inner cylinder 5 is welded by multiple sections of different materials, which effectively changes the magnetic circuit of the magnetic field generated by the electromagnetic coil 6 during the operation of the device, thereby increasing the effective area of the magnetorheological fluid. That is to increase the damping force (moment) value generated by the device; preferably, the first annular cylinder 51 is made of low carbon steel, the second annular cylinder 52 is made of non-magnetic material, and the first annular The cylinder 51 is connected to the second annular cylinder 52 by welding; in addition, the inner cylinder 5 can also be of another structure, which can also achieve the above-mentioned technical effect, that is, the cylinder of the inner cylinder 5 is provided with several hollowed out parts 53, so The hollow part 3 is set corresponding to the electromagnetic coil 6 so that the magnetic force line passes through, the hollow part 53 is a square through hole (considering the structural strength, increasing the chamfer), and the ring part on the inner cylinder 5 of the coil 6 is evenly provided with multiple holes. A hollowed-out part 53, the magnetic force lines of the electromagnetic coil and the permanent magnet can pass through to reach the cylinder body of the shock absorber, thereby forming multiple effective shear working surfaces.
本实施例中，所述定子4为采用铁氧体制成的铁芯；定子4采用铁氧体制成，相比于非传统的电工纯铁，在响应时间上得到极大的提高，实现了装置的快速响应。In this embodiment, the stator 4 is an iron core made of ferrite; the stator 4 is made of ferrite, and compared with the non-traditional electrical pure iron, the response time is greatly improved, and the device is realized. quick response.
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.
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| CN109235686B (en) * | 2018-09-29 | 2020-03-31 | 山东大学 | A Rotary Magnetic Negative Stiffness Damping Device |
| CN110259872B (en) * | 2019-06-27 | 2020-09-08 | 重庆大学 | Magneto-rheological inertia variable damping torsional vibration damper |
| CN110645317B (en) * | 2019-10-09 | 2021-09-24 | 广州大学 | A multi-dimensional shock isolation device for storage tanks |
| CN111173880B (en) * | 2020-01-13 | 2021-07-06 | 上海理工大学 | A magnetorheological fluid particle collision damper |
| CN112696476B (en) * | 2020-12-03 | 2022-04-12 | 天津理工大学 | Electric loader with electromagnetic buffer |
| CN115467910A (en) * | 2022-09-21 | 2022-12-13 | 徐州亦成智能装备研究院有限公司 | Spiral flow type magnetorheological clutch |
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