CN1021245C - Energy damping device - Google Patents

Energy damping device Download PDF

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CN1021245C
CN1021245C CN 90107601 CN90107601A CN1021245C CN 1021245 C CN1021245 C CN 1021245C CN 90107601 CN90107601 CN 90107601 CN 90107601 A CN90107601 A CN 90107601A CN 1021245 C CN1021245 C CN 1021245C
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friction
assembly
cylinder
piston
member
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CN 90107601
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CN1059587A (en
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拉尔夫·卡伦巴赫
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弗劳尔公司
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Abstract

一种消能装置具有一个活塞缸组合件,其中有一个缸和在缸中移动的活塞。 One kind of energy dissipation device having a piston cylinder assembly including a cylinder and a piston movable in the cylinder. 一个预加载双作用弹簧和一个摩擦组合件完全容放在缸中,与活塞同轴相接。 A preload spring and a double-acting friction assembly is fully housed in the cylinder, coaxially with the piston contact. 弹簧作用在摩擦组合件上,迫使组合件与缸的内表面作摩擦接触。 The spring acts on the friction member combination, forcing the inner surface of the cylinder assembly for frictional contact. 摩擦组合件至少有一个楔形件,与缸的内表面接触。 A friction assembly has at least one wedge member in contact with the inner surface of the cylinder. 摩擦组合件还有多个相间隔的压缩环与楔形件交叠,将楔形件在径向上向外推,与缸的内表面作摩擦接触。 There are a plurality of friction assembly spaced overlapping compression ring and the wedge member, the wedge pushing radially outward, with the inner surface in frictional contact with the cylinder.

Description

本发明一般涉及消能装置,尤其涉及一种用于吸收振动载荷、消散动能、控制振动和限制载荷移动的系统。 The present invention relates generally to energy dissipation devices, and particularly relates to a system for absorbing shock loads, dissipating the kinetic energy, vibration control and limit movement of the load.

消能装置是众所周知的,在各种工业中广泛应用于各种用途。 Energy dissipation devices are well known, widely used in various industries for various purposes. 例如,铁路工业中一般使用摩擦楔减振系统(friction wedged shock absorbing system)消散振动能。 For example, the railway industry generally use a friction wedge damping system (friction wedged shock absorbing system) to dissipate vibrational energy.

传统减振装置最好的示例,是以豪代尔摩擦缓冲器(Houdaille Friction Snubber)为商品名称出售的减振器,由纽约州布伐罗市豪代尔工业公司出售。 The best example of a conventional damping device, friction damper is Howard Dyer buffer (Houdaille Friction Snubber) sold under trade names, sold by New York City, Luo Hao Lauderdale cloth cutting industrial companies. 豪代尔减振器通常包含有管筒,其内装有预压缩弹簧和三个扇形靴块,在工作元件移动时与管筒内侧作摩擦接触。 Ho dampers usually comprise Dyer tube, having inserted therein a pre-compressed spring shoe segment and three blocks, in operation movement of the inner tube element for frictional contact. 预压缩弹簧将靴块向外推压、使之与管筒接触,产生靴块在管筒内衬上的热摩擦位移。 The shoe block precompressed spring urged outwardly, brought into contact with the tube, friction heat is generated in the block displacement shoe liner tube. 但是靴块的摩擦位移使靴块衬和管筒迅速磨损。 However, the displacement of the friction block so that boot blocks shoe liner and rapid wear of the barrel. 因此,传统减振器要求经常保养和更新部件。 Thus, the conventional damper requires regular maintenance and update member.

虽然豪代尔缓冲器和其它类似的传统装置,吸收支承系统振动造成的动能,但已经证明在消散相当大的瞬时动能方面并不完全成功。 Although Howe Dyer buffers and other similar conventional means, vibration absorbing support system caused by the kinetic energy, but has not proved entirely successful in dissipating the kinetic energy of a substantial transient aspects. 在这方面,振动能的消散仅需运动部件热位移产生中度摩擦阻力,诸如靴块在豪代尔缓冲器中造成的热位移等。 In this regard, the vibrational energy is dissipated only moving parts thermal distortion of a moderate frictional resistance, such as a hot shoe block displacement caused by Howe Dyer buffer. 但是,较大瞬时动能的消散,使减振系统以不可预测和不利的方式运转。 However, a large transient kinetic energy dissipation, the damping system in an unpredictable and unfavorable way operation. 这种不利效果最好的示例是“水锤效应”,这是由于阀的迅速作动,或在管道破裂时固定在这类减振器上的破裂管的移动或抖动效应所造成的。 The best example of this adverse effect is "water hammer effect", which is due to the rapid actuation of the valve, or a fixed or mobile jitter effects on such cracking tubes in the damper caused by a pipe break.

US4,481,974公开了另一种消能装置,该装置用于在阀装置上将开阀和闭阀时产生的阀振动进行减振。 US4,481,974 discloses another energy dissipation means for opening the valve when the valve and the vibrations generated in the on-off valve means a valve damping. 该阀具有一静止阀部和一活动阀部,其间装有摩擦组件。 The valve has a stationary valve part and a movable valve portion provided with a friction assembly therebetween. 该摩擦组件产生摩擦阻力,在开阀或闭阀的时候作用在活动阀部上,对活动阀部的运动进行轻微的制动。 The friction generating assembly frictional resistance, at the time of valve opening or closing action of the valve at the movable valve unit, the motion of the movable valve part slight braking. 虽然这种消能装置能够对小振动进行满意的减振,但是它并不能将大的瞬时动能进行消散。 Although this energy dissipation device capable of satisfactorily small vibration damping, but it does not bring much kinetic energy dissipated instantaneously.

曾有人试求解决与消散大瞬时动能相关的问题,但都没有成功的解决办法。 It has been tested and seek to solve the problem of large transient kinetic energy dissipation related, but have not been successful solutions. 其中一个办法是增大诸如豪代尔缓冲器中靴块之类热阻元件的行程或位移量。 One way is to increase the amount of displacement or stroke such as TAG classes Dyer shoe block buffer element of the thermal resistance. 另一个试行的办法是增加弹簧的长度。 Another approach is to increase the pilot spring length. 虽然提出过的每一办法都可能使相当大的瞬时动能消散,但都经证明不能完全成功。 While each approach proposed operation may lead to considerable transient kinetic energy dissipation, but are not proved entirely successful. 在这方面,增大抑制元件的位移量,或增长弹簧元件,都使消能装置的总尺寸有不利的增大。 In this regard, increasing the amount of displacement suppression member, or increase the spring element, so that the total size of all the energy dissipation apparatus adversely increases. 因此,这些经试行的办法在某些应用方面不能完全令人满意,因为减振器增大不能在受局限的位置上或空间有限的位置上使用。 Therefore, these approaches through pilot not entirely satisfactory for some applications, since the shock absorber increases can not be used by the limitations of location or locations with limited space. 并且这种试行的办法使制造成本有很大的增高。 And this pilot approach the manufacturing cost is very high.

因此,极需有一种新颖的改进的消能装置,可用以有效消散瞬时振动能。 Thus, there is a great need of new and improved energy dissipation means may be used to effectively dissipate the vibration energy transient. 消能装置应能产生相当大的抑制力,沿抑制路线有最小的位移量。 Energy dissipation means should produce relatively large restraining force with minimal displacement amount along the route suppressed. 装置的尺寸应相当紧凑,生产费用相当低,并容易安装。 Size of the apparatus should be relatively compact, relatively low production costs, and easy to install. 还应能以可预测的方式运转,应需要最少量的保养,和部件的更新。 It should also be able to operate in a predictable way, should need to be updated a minimum amount of maintenance, and parts.

装置应有广泛的现代化应用方面,应有通用性,例如用于机车工业和核动力设备。 Device should have a wide range of modern applications, there should be universal, such as a locomotive for industrial and nuclear power equipment. 装置应相当灵敏,重量相当小,尺寸紧凑,以便作军事和宇航上的应用。 Means should be very sensitive, relatively small weight, compact size, so as aerospace and military applications.

因此,本发明的主要目的是提供一种新颖的改进的消能装置,它可产生相当大的抑制力,以有效消散瞬时振动能,同时沿抑制路线有最小的位移量。 Therefore, a primary object of the present invention is to provide a novel and improved energy dissipation device, which may produce relatively large restraining force to effectively dissipate transient vibration energy while suppressing along the route with a minimum amount of displacement.

本发明的又一目的是提供一种新颖的改进的消能装置,尺寸相当小而紧凑,制造费用低而安装方便。 A further object of the present invention is to provide a novel and improved energy dissipation means, relatively small and compact size, low manufacturing cost and easy installation.

简言之,本发明的上述及其他目的和特点,可通过提供一种新颖的改进的消能装置来实现。 Briefly, the above and other objects and features of the present invention can be achieved by providing a novel and improved energy dissipation device. 根据本发明,一种用于吸收振动载荷和用于消散动能的消能装置,所述装置包括:一个活塞缸组合件,它具有一个空心的缸和一个至少局部安装在所述空心缸中的活塞;一个强制作用在所述缸和所述活塞之间的摩擦组合件,用以在其间产生摩擦阻力来消散沿轴向施加在所述缸和所述活塞相互之间的大载荷;一个安放在所述空心缸中的预加载弹簧组合件,用于作用在所述摩擦组合件上,以便在所述缸和所述活塞之间产生所述摩擦阻力;所述活塞具有一个在所述摩擦组合件外部位置上沿径向伸出的扩大部;以及一个止动件,藉助与所述活塞的所述扩大部的接触而限制所述活塞和所述缸相互之间的自由相对轴向移动;所述活塞和所述缸的安装,使其相互间可作自由轴向移动而与所述摩擦组合件无关,从而在正常运转期间,小载荷可使所述活塞和所述缸作相对轴 According to the present invention, a method for absorbing shock loads and dissipate kinetic energy dissipation means, said means comprising: a piston cylinder assembly having a cylinder and a hollow at least partially mounted in the hollow cylinder a piston; a friction force acting between said cylinder assembly and said piston for generating friction therebetween to dissipate applied axially between said cylinder and said piston to each other a large load; a place preload spring assembly of the hollow cylinder, for acting on said friction assembly to generate said frictional resistance between the cylinder and the piston; the said piston having a friction assembly enlarged portions projecting radially outer position thereof; and consisting of a stopper, in contact with the piston by means of said enlarged portion is restricted between the piston and the cylinder relative axial movement to each other ; mounting the piston and the cylinder, so that it can be used freely to each other irrespective of the axial movement of the friction assembly, such that during normal operation, a small load can be the piston and the cylinder relative to the shaft 移动;所述摩擦组合件还具有一个沿轴向延伸的孔,方便所述活塞和所述缸的安装,使其相互间可自由轴向移动而与所述摩擦组合件无关;所述弹簧组件作用在所述摩擦组合件上,受阻力地推动之,当所述摩擦组合件只受小载荷作用时,可使摩擦组合件基本上自由地相对运动而不致引起大的摩擦阻力,当所述摩擦组合件只受大载荷作用时可使所述摩擦组合件受偏压而产生大的摩擦阻力;所述活塞缸组合件具有一个空间,所述空间使所述活塞在所述正常运转期间,在受小载荷作用下,在其与所述摩擦组合件相接触前可作有限度的基本上自由的相对移动。 Moving; said friction assembly further having a bore extending axially of said piston and cylinder to facilitate the mounting, it is free to move axially with each other regardless of the composition of the friction member; said spring assembly acting on said friction assembly, pushed by the resistance, when the composition of the friction member only by a small load, the frictional members substantially consisting of a combination of relative movement without causing large frictional resistance, when the when the friction assembly can load only by the large friction generating assembly biased by a large frictional resistance; the piston assembly having a cylinder space, the space in the piston during the normal operation, under small loads by, prior to its contact with the friction assembly may be limited substantially free relative movement.

在本发明的一种形式中,消能装置具有一个摩擦组合件和一个预加载弹簧。 In one form of the invention, the energy dissipation device having a friction assembly, and a preload spring. 因此,当装置承受振动冲击载荷和瞬时动载荷时,产生的能转变为热能,沿缸的内壁消散。 Thus, when the device is subjected to vibration and shock loads instantaneous dynamic load generated energy into heat energy, dissipate along the inner wall of the cylinder. 在这方面,弹簧向相邻的外压缩环施加轴向力,使之与下一相邻楔形件紧密接触。 In this regard, the spring adjacent outer compression ring to apply an axial force, so that the next adjacent wedge into close contact. 因此,楔形件被径向向外压,与缸的内壁作摩擦接触。 Thus, the wedge member is pressed radially outwards, with the inner wall of the cylinder for frictional contact.

与此相似,根据施加力的大小,摩擦组合件中的楔形件被推压,与缸的内表面作摩擦接触。 Similarly, according to the magnitude of the applied force is pushed, the friction wedge assembly, with the inner surface in frictional contact with the cylinder.

本发明的另一种形式中具有一个消能装置,装置有一对相间隔的摩擦组合件,与弹簧相对放置。 Another form of the invention has a means of energy dissipation, the friction means having a pair of spaced-apart assembly, placed opposite the spring.

本发明又一种形式的特点,是具有一种消能装置,其中具有一对相间隔的摩擦组合件,相对于弹簧放置,具有一对止动件,限制活塞在缸体内的自由行程,又限制其中的一个摩擦组合件的行程。 Form a further feature of the invention is to have a means of energy dissipation, wherein the composition has a pair of friction members spaced apart with respect to the spring storage having a pair of stoppers, limiting the free travel of the piston in the cylinder, wherein a friction and limit the stroke of the assembly. 在一个止动件和相邻的摩按组合件之间设有间隙,使活塞在缸体内有限度的自由行程。 In one stopper and the adjacent friction assembly by a gap between the piston of the limited free travel inside the cylinder. 本发明的又一种形式,其特点为有一种消振装置,其中具有一个摩擦组合件配置在两个双作用预加载弹簧之间。 Still another form of the invention, which is characterized to have a damper device having a friction assembly disposed in two pairs acting between the spring preload.

发明的装置相当小,尺寸紧凑,造价低,安装方便,以可预测的方式运转。 The apparatus of the invention is quite small, compact size, low cost, easy to install, operate in a predictable manner. 沿较短的抑制路线产生较大的抑制力。 Along the shorter route to suppress a greater restraining force. 本发明的装置相当灵敏,重量相当小,使之可在范围广阔的现代用途中使用。 The apparatus of the present invention is very sensitive, relatively small weight, so that it can be used in a wide range of modern applications.

本发明的上述的以及其他的目的和特点,达到目的和取得特点的方式,以及发明的本身,结合附图并参阅下文对发明各实施方案的叙述,便可有最清晰的了解,附图简单说明如下:图1为按本发明制造的一种消能装置的前剖视图,显示支承一个管路结构; The above and other objects and features of the present invention, to achieve the objects and obtain the characteristics of the way, and the invention itself, and refer to the accompanying drawings hereinafter be described various embodiments of the invention, there can be most clearly, the drawings are simple as follows: 1 is a front sectional view of an eraser according to the invention can be manufactured by means of showing a line support structure;

图2为图1所示消能装置沿线2-2的放大剖视图; FIG 2 is a diagram of the energy dissipation device along line 2-2 shown in an enlarged sectional view;

图3为按本发明制造的另一消能装置的剖视图; 3 is a cross-sectional view of another energy dissipation device according to the present invention is manufactured;

图4为按本发明制造的又一消能装置的剖视图; FIG 4 is a sectional view according to the present invention for producing a further energy dissipation device;

图5为构成图1中装置一部分的内压缩环的放大侧视图; 5 is a portion of the configuration device of FIG. 1 in an enlarged side view a compression ring;

图6为构成图1中装置一部分的楔形件的放大分解侧视图; 6 is an enlarged portion of the wedge member in FIG 1 an exploded side view of the device configuration;

图7为构成图1中装置一部分的外压缩环的放大侧视图; The outer portion of FIG. 7 shows the structure of a compression ring is an enlarged side view;

图8为按本发明制造的又一消能装置的剖视图。 FIG 8 is a sectional view according to the present invention for producing a further energy dissipation apparatus.

现参看附图,具体参看图1,图中示出按本发明制造的消能装置10,它固定于一个高压管系11上。 Referring now to the accompanying drawings, particularly with reference to FIG. 1, FIG. 10 shows the energy dissipation device according to the present invention is manufactured, which is fixed to a high pressure piping 11. 这装置10可控制振动,在管系11发生破裂时限制其运动,下文中将有较详细的叙述。 This controls the vibration device 10 may limit its movement in the piping 11 rupture occurs, there will hereinafter be described in greater detail.

装置10一般包括一个活塞缸组合件12,其一端固定在基本不活动的刚性支架13上,其另一端与管系11连接以进一步支承之。 Apparatus 10 generally includes a piston cylinder assembly 12 having one end fixed on a rigid support 13 substantially inactive, its other end the tubing 11 is connected to the further support. 一个预加载双作用弹簧16安装在活塞缸组合件12内,沿轴向作用在摩擦组合件14上。 A preload spring 16 is mounted in a double-acting piston-cylinder assembly 12, in the axial direction acts on the friction member 14 in combination.

摩擦组合件14一般具有一组基本相同的相间隔的楔形件,诸如楔25及26,它们在诸如压缩环30、33及36的一组压缩环之间交替配置。 Usually the friction assembly 14 having a set of substantially identical spaced wedge, such as wedge 25 and 26 are alternately disposed between a set of compression rings 30, 33 and 36, such as a compression ring. 仅为图示说明起见,在摩擦组合件14中设有两个楔形件和三个压缩环。 Only for the sake of illustration, two wedge members provided with three compression and friction ring assembly 14. 但是,本领域普通技术人员易于了解,单一的装置10中可使用多于此数的楔形件和压缩环。 However, those of ordinary skill in the art readily understand, a single apparatus 10 can be used more than this number of wedge and the compression ring.

摩擦组合件14与活塞缸组合件12的活塞22同轴相连,并与活塞缸组合件12的缸20的内壁或内周缘21紧密摩擦接触。 Friction assembly 14 coaxial with the piston 22 of the piston-cylinder assembly 12 is connected to, and in close frictional contact with the inner wall or inner periphery of the cylinder of the piston-cylinder assembly 20, 12 21. 于是,摩擦组合件14靠在活塞缸组合件12的内壁21上的移动,产生抑制摩擦力,将系统中的动能转变为热能,热能通过活塞缸组合件12的壁消散。 Then, the mobile 21 on the friction of the piston assembly 14 against the inner wall of the cylinder assembly 12, resulting in suppressing a frictional force, the system of kinetic energy into heat energy, dissipate heat energy through the wall 12 of the piston cylinder assembly.

如图6所示,楔形件25一般具有一个环形件40,形成有中心孔50,以便同时与一对互补形状的压缩环30及33连接。 6, the wedge member 25 having a generally annular member 40, 50 is formed with a central hole, so as to simultaneously connected to a pair of compression rings 30 and 33 of complementary shape. 图2又示出,楔形件25在周缘上有轴向伸展的隙孔42,当将压缩环30及33向内压入中心孔50内时,楔形件25可在径向上向外伸展,与缸20的内壁21作摩擦接触。 FIG 2 again shows the wedge member 25 has a clearance hole 42 extending axially on the periphery, when the compression ring 30, and 50 inwardly into the central bore 33, the wedge member 25 may extend radially outward, and the inner wall 21 of the cylinder 20 for frictional contact. 这样便可用楔形件25消散振动能及瞬时动能。 Such vibrational energy can be dissipated and transient kinetic wedge-shaped member 25. 在这方面,当吸收的能增加时,使楔形件25的伸展可调节,达到与内壁21作更紧密的摩擦接触,将更大量的能消散。 In this regard, when absorption can increase the extension 25 of the wedge member can be adjusted, to make the inner wall 21 closer frictional contact, a greater amount of energy dissipated.

运转时,装置10承受振动冲击载荷,和可能的瞬时动载荷。 During operation, device 10 is subjected to vibration and shock loads, and dynamic loads may be transient. 将产生的能转变为热能,沿缸20的内壁21消散。 The resulting energy into heat energy, along the inner wall 20 of the cylinder 21 to dissipate. 在这方面,当管系11承受向上的力时,活塞缸组合件12的活塞22在缸11中向上移动。 In this regard, when the tubing 11 is subjected to upward force, the piston 12 of the piston cylinder assembly 22 moves upward in the cylinder 11. 于是预加载弹簧16对下压缩环36施加一个向上的轴向力,下压缩环36的结构和设计大致与图7所示的上压缩环30相似。 Thus pre-load spring 16 on the lower compression ring 36 applies an upward axial force, the compression ring 36 and the structure design substantially shown in FIG. 7 is similar to the compression ring 30.

弹簧16压迫压缩环36,使其与楔形件26更紧密接触,使楔形件25沿轴向移动,并且在径向上向外伸展,与缸20的内壁21作摩擦接触。 Compression spring 16 is a compression ring 36, to make it more intimate contact with the wedge 26, the wedge member 25 is axially movable into frictional contact, and extending radially outwardly, as with the inner wall 21 of the cylinder 20. 楔形件26的轴向位移,使之与下一个相邻的压缩环33的一个斜坡环形偏突表面78接触。 Axial displacement of the wedge member 26, so that the next adjacent annular compression ring 33 contacts a ramp surface 78 projections biasing. 压缩环33的另一相对对称设置的斜坡环形偏突表面76,被沿轴向推动到与下一个相邻的楔形件25接触,将其同时在轴向和径向上推压。 Partial compression ramp projecting annular surface of the ring 33 is further arranged symmetrically opposite 76, is pushed axially into the contact with the next adjacent wedge member 25, which is axially and radially while pressing.

楔形件25的轴向位移使之接触压缩环30。 Axial displacement of the wedge member 25 to make contact with the compression ring 30. 压缩环33的偏突表面76接触楔形件25的互补形状的斜坡环形偏突表面65A,将其在径向上向外顶。 The contact 76 of the complementary shapes of the wedge member 25 of the compression ring 33 biasing the ramp surface projecting annular biasing protrusion surface 65A, which is a top outwardly in the radial direction. 这样,使开口42向外周扩大,压迫楔形件25与缸20的内壁21作摩擦接触。 Thus, the expansion of the outer periphery of the opening 42, the wedge member 25 and the compression of the inner wall 21 of the cylinder 20 for frictional contact.

当装置10受一个向下的力时,活塞22被在缸20中沿轴向向下推,将上压缩环30与第一楔形件25接触,迫使其沿径向向外,与缸20的内壁21作摩擦接触。 When the apparatus 10 by a downward force, the piston 22 is pushed down axially in the cylinder 20, the upper compression ring 30 in contact with the first wedge member 25, forcing it radially outwardly of the cylinder 20 21 make frictional contact with the inner wall. 于是假如向下的力超过楔形件25的轴向摩擦阻力,便迫使楔形件25在轴向上与压缩环33的台肩76接触,使另一台肩78与下一相邻楔形件26在轴向上接触。 Thus, if a downward axial force exceeding the frictional resistance of the wedges 25, it forces the wedge member 25 in the axial direction of the compression ring 33 contacts shoulder 76, another shoulder 78 so that the wedge 26 in the next adjacent axially contacting.

压缩环33与楔形件26的这种轴向接触,使楔形件26在径向上向外伸,与缸20的内壁21作摩擦接触。 This compression ring 33 axially in contact with the wedge 26, the wedge member 26 outwardly extending in the radial direction, with the inner wall 20 of the cylinder 21 for frictional contact. 假如向下的轴向力仍然超过楔形件25与26产生的摩擦阻力,则使整个摩擦组合件14将弹簧16向下压缩。 If the downward axial force still exceeds the frictional resistance generated by the wedge 25 and the member 26, the entire assembly 14 friction spring 16 compressed downwardly.

因此将摩擦组合件14与弹簧16作创造性的组合,增高了装置10的载荷能力。 Thus the combination of the friction assembly 14 and the spring 16 for the creative, high load capacity of the device 10. 通过实验发现,有三个楔形件和四个压缩环的摩擦组合件14,比单独的弹簧16的载荷能力增高约五倍。 We found experimentally that there are three wedge-shaped friction member and the compression ring of the four assemblies 14, about five times higher than the load capacity of the spring 16 alone. 因此,本发明摩擦组合件可显著减小装置10的总长度和成本,并大为提高其应用范围。 Therefore, the friction assembly of the invention can significantly reduce the length and cost of the overall apparatus 10 and its application range is greatly improved.

现详细考虑摩擦组合件14,尤其注意图1、2及5-7,通常有一组压缩环30、33及36,和一组与其交叠的楔形件25及26。 Consider now in detail the friction assembly 14, with particular attention to FIG. 1, 2 and 5-7, there is usually a set of compression ring 30, 33 and 36, and a set of overlapping therewith wedges 25 and 26. 楔形件一般彼此相似,因此在下文中仅就楔形件25作详细叙述。 The wedge member is generally similar to each other, so far as the wedge member 25 is described in detail below.

楔形件25通常为一个裂口环形元件40,在其全部轴向长度上是空心的。 The wedge member 25 is generally a split ring element 40, it is hollow over its entire axial length. 环形件40有一个在中心上轴向伸展的大致为砂漏形的孔50。 The annular member 40 has an axial extension on the center of the hourglass hole 50 substantially. 孔50形成一个向里倾斜的斜坡偏突面,或台肩65A,和一个相对的向里倾斜的斜坡偏突面63A。 A hole 50 is formed inwardly projecting inclined ramp partial surface or shoulder. 65A, and an opposed inwardly inclined ramp surface projecting biasing 63A. 内偏突表面或边缘63A的外径,沿着轴向向中心环部61逐渐减小,形成孔50的一个圆锥形部或空间63。 Partial outer diameter of the inner surface or edge 63A of the projection is gradually decreased toward the center along the axial direction of the ring portion 61, a conical hole portion 50 or space 63 is formed.

与此相似,内偏突表面65A的外径,在轴向上向中心环部61逐渐减小,形成孔50的一个圆锥形部或空间65。 Similarly, the inner partial surface 65A of the protruding outer diameter gradually decreases toward the center of the ring portion 61 in the axial direction, a conical portion 50 of the hole or space 65 is formed. 孔部65形成一个斜肩台或边缘65A。 The hole portion 65 is formed a table or oblique edges 65A. 空间65在楔形件55的径向对称轴的对侧,大致与空间63对称。 In the space 65 of side wedges 55 of the radial axis of symmetry 63 is substantially symmetrical to the space. 中心环形部61有大致圆形的截面,形成一个在环形空间63与65之间的环形空间67。 Central annular portion 61 has a substantially circular cross-section, an annular space 67 formed between the annular space 63 and 65.

如图2所示,楔形件25的环形件40一般有一个裂隙状的径向孔42,通过其全部轴向长度和径向厚度,使环形件40可以沿径向向外移动,当诸如压缩环33的压缩环与环形台肩53接触时,环形件40可以沿径向外移,和缸20的壁21接触。 2, the wedge member 25 is generally an annular member 40 has a slit-like radial bore 42, through the entire axial length and a radial thickness, the ring member 40 can move radially outwardly, when such compression when the compression ring and an annular shoulder 53 contacts the ring 33, the annular member 40 may be radially relocation, and the contact wall 21 of the cylinder 20. 有若干基本相似的裂隙状径向孔,诸如孔43,44及45,沿环形件40的外缘在轴向上有相当大的间距。 There are a number of slit-like substantially similar radial holes, such as holes 43, 44 and 45, along the outer edge of the annular member 40 has a relatively large pitch in the axial direction. 孔43、44及45从中心环部61沿径向伸展,基本通过环形件40的径向厚度而不完全通过。 Holes 43 and 44 extending radially and 4561 from the central ring portion, substantially radial thickness of the annular member 40 is not completely through. 因此孔43、44及45使环形件40可在上面作铰链式的变形,便于在径向上向外与内壁21接触。 45 and holes 43 and 44 so that the annular member 40 can be hinged in the above modification, to facilitate contact with the inner wall 21 radially outwardly.

现具体参照图1,5及7详细考虑压缩环30、33及36,摩擦组合件14一般具有一对外压缩环30及36和一个内压缩环33。 Referring now specifically to FIGS. 1, 5, 7 and 30, 33 and consider in detail the compression ring 36, the friction assembly 14 generally has a pair of outer compression ring 30 and compression ring 36 and an inner 33. 但本领域普通技术人员者可以理解,也可用一个或多个相似的内压缩环。 Those of ordinary skill in the art can appreciated that one or more may also be used in similar compression ring.

内压缩环33具有一个环形体34,有一个增大直径的扩大部70,截面大致为圆形,位于外端部72及74之间。 The compression ring 33 having an annular body 34, has an enlarged diameter enlarged portion 70, a substantially circular cross section, positioned between the outer end portions 72 and 74. 斜坡环形偏突面或台肩76及78对称配置在扩大部70的两侧。 Partial annular projection or ramp surface 76 and the shoulder 78 disposed symmetrically at both sides of the enlarged portion 70. 偏突面76与偏突面65A的形状及尺寸互补,互相接触。 Partial Partial projecting surface 76 and complementary projecting surface 65A of the shape and size, in contact with each other. 偏突面76从扩大部70向外伸,其外径沿着轴向向远端部72逐渐减小。 Partial projecting outwardly from the surface 7670 extending enlarged portion having an outer diameter gradually decreases toward the distal end portion 72 along the axial direction.

与此相似,偏突面78的形状及尺寸,与相邻配置的楔形件26的内环形台肩(未示)的倾斜边缘(未示)互补,互相接触。 Similarly, the shape and size 78 projecting partial surface, the annular shoulder disposed adjacent the wedge member 26 (not shown) of the tilting edge (not shown) complementary contact with each other. 偏突面78从扩大部70向外伸展,其外径沿着轴向向远端部74逐渐减小。 Partial projecting surface 78 extending outwardly from the enlarged portion 70 having an outer diameter gradually decreases toward the distal end portion 74 along the axial direction. 一个圆柱形中心长孔81,穿过内压缩环33的全部轴向长度,以便与活塞缸组合件12的活塞22同轴接触,并可沿其轴向长度自由滑动。 A long cylindrical central hole 81, through the entire axial length of the compression ring 33, so as to contact with the piston 22 coaxially with the cylinder piston assembly 12, and freely slidable along its axial length.

外压缩环30及36的设计及结构大致相似,因此在下文中仅参考图7对压缩环30作较详细的叙述。 An outer compression ring 30 and the design and configuration substantially similar to 36, so below with reference to FIG. 7 only the compression ring 30 as described in greater detail. 压缩环30具有一个环形体83,有扩大直径的部分87,截面大致为圆形。 A compression ring 30 having annular body 83, with an enlarged diameter portion 87, a substantially circular cross section. 一个环形斜偏突面或边缘90,形状及尺寸与内压缩环33的斜台肩76大致相似,以便与偏突面63A接触。 A partial annular projection plane or inclined edge 90, the shape and size of the inner helical compression ring 33 shoulder 76 is substantially similar, so as to contact with the surface of the biasing projection 63A. 一个圆柱形长中心孔91,穿过外压缩环30的全部轴向长度,以便与活塞12同轴接触,并可沿其轴向长度自由滑动。 A long cylindrical central aperture 91, through the entire axial length of the outer compression ring 30, so as to contact with the piston 12 coaxially and is free to slide along its axial length. 孔91的直径与孔81大致相同,轴向长度约为其一半。 The hole 91 is substantially the same diameter as hole 81, the axial length of about half.

现参照图3对按本发明制造的另一消能装置100作详细分析,装置100基本与消能装置10相似。 Referring now to FIG. 3 according to the present invention further cancellation apparatus 100 can be made detailed analysis, the energy dissipation device 100 is substantially similar to the apparatus 10. 装置100包括一个活塞-缸组合件112,将预加载的弹簧116和一对摩擦组合件114及115完全封在里面。 Apparatus 100 includes a piston - cylinder assembly 112, the preloaded spring 116 and a pair of friction assemblies 114 and 115 completely seal the inside.

活塞缸组合件112大致与消能装置10的活塞缸组合件12相似,具有一个长形缸120,沿着全部轴向长度为空心,与缸20相似。 The piston-cylinder assembly 12 is similar to the piston-cylinder assembly 112 is substantially the energy dissipation device 10, having an elongated cylinder 120, along the entire axial length of hollow, similar to the cylinder 20. 一个长杆形活塞122与活塞22相似,与缸120沿轴向相接,并与弹簧116及摩擦组合件114及115同轴接触。 A long rod-shaped piston 122 is similar to piston 22, is axially in contact with the cylinder 120, 114 and 115 and the spring 116 and the coaxial contact assembly friction.

活塞缸组合件112与活塞缸组合件12的不同之处,在于有两个止动件117及118,以限制弹簧116和摩擦组合件114及115在缸120中的移动。 The piston-cylinder assembly 112 differs from the piston-cylinder assembly 12, wherein there are two stops 117 and 118 to limit the friction spring 116 and the assembly 114 and 115 moves in the cylinder 120. 在这方面,止动件118有一个螺母形的长管体165,其沿全部轴向长度上是空心的,可和活塞122的外端125作可调节的螺纹紧固。 In this regard, the stop member 118 has a long pipe-shaped body 165 a nut, which is hollow along the entire axial length, and the outer end of the piston 122 may be 125 as an adjustable screw fastening.

止动件118可沿活塞122的轴向选定位置,与摩擦组合件114的近端126有一个距离,形成其间的一个间隙130,使活塞122在接触摩擦组合件114前有一个有限的自由行程。 Stopper 118 may be a position, the friction assembly 114 with the proximal end 126 has a selected distance along the axial direction of the piston 122, a gap 130 is formed therebetween, the frictional contact of the piston assembly 122 has a front 114 limited freedom stroke. 因此,当有较小的载荷使活塞122在缸120中振动位移时,管形体165的前端135抵靠摩擦组合件114,从而限制活塞122的向前移动。 Thus, when a smaller load when the piston 122 in the cylinder 120 in the vibration displacement, the front end of the tubular body 135,165 against friction assembly 114 so as to limit the forward movement of the piston 122.

止动件117完全放置在缸120内的近端140中,抵靠摩擦组合件115,以限制其在缸120内的向前移动。 Proximal stop member 117 is fully disposed within the cylinder 120, 140 against the friction assembly 115, to limit its movement in the cylinder 120 forwardly. 止动件117用管形件142制造,沿其全部轴向长度是空心的,并且其尺寸与缸120的内壁或周缘121互补,以便紧密相接。 117 with the stoppers 142 for producing the tubular member along its entire axial length is hollow, and its size or the periphery of the cylinder inner wall 121,120 is complementary to closely contact.

现考虑弹簧116,其设计与结构一般与装置10的弹簧16相似,在缸120内同轴安装在活塞122上。 Considering now the spring 116, the design and structure is generally similar to the spring 16 of the apparatus 10, within the cylinder 120 coaxially mounted on the piston 122. 弹簧116配置在摩擦组合件114及115之间,使活塞122在缸120中轴向移动时,装置110可将过多的能消散。 Spring 116 disposed between the friction assemblies 114 and 115, when the piston 122 moves axially in the cylinder 120, means 110 may dissipate too much energy. 因此,当活塞122被在缸120内向前推时,止动件118的前端135抵靠摩擦组合件114,将其沿内壁121向前摩擦推动,使能量得以消散。 Accordingly, when pushed forward piston 122 in the cylinder 120, the stopper member abuts against the distal end 135,118 of the friction assembly 114, friction push it forward along the inner wall 121, to dissipate the energy. 在活塞122的前进行程中,摩擦组合件115的移动继续受止动件117限制。 In the forward stroke of the piston 122, moving the friction assembly 115 continue to be driven stoppers 117 limit.

与此相似,当将活塞122向后推出缸120时,一个配置在活塞122远方前端150上的盖145,抵靠摩擦组合件115,将其沿内壁121向后摩擦移动,使能量消失。 Similarly, when the cylinder 120 the piston 122 rearwardly launch, a cover 145 disposed on the front end 150 of the piston 122 into the distance, against the friction assembly 115, to move rearwardly along the inner wall 121 of friction, so that energy loss. 在活塞122向后的行程中,摩擦组合件114的移动继续受缸120近端157上大致圆形的板155限制。 The backward stroke of the piston 122, the moving assembly 114 continues the friction on the cylinder 120 by the proximal end 157 is a generally circular plate 155 limit.

一个板155一般在缸120的近端157上固定,抵靠摩擦组合件114,将弹簧116和摩擦组合件114及115容纳在缸120中。 Usually a plate 155 fixed at the proximal end 157 of the cylinder 120, abuts against the friction assembly 114, the spring 116 and the friction assemblies 114 and 115 housed in the cylinder 120. 板155具有一个圆孔160,形状及尺寸与止动件118的外径互补,使止动件118的管体165可和缸120连接,通过孔160伸入缸120内。 Plate 155 having a circular hole 160, and the shape and size of the outer diameter of the stopper member 118 is complementary to the tubular body 118 of the stopper member 165 and the cylinder 120 may be connected, extends into the cylinder 160 through the aperture 120. 管体165向后伸入一个环形头170,成为一体,环形头的外径大于管体165的外径,也大于孔160的直径。 Tube 165 extends into a rearward annular head 170, integral, annular outer diameter larger than the outer diameter of the first tubular body 165, 160 is also larger than the diameter of the hole. 于是当止动件118沿活塞122前进时,头部170抵靠板155,其在缸120中的行程受板155的限制。 Thus when the stopper member 118 in the piston 122 advances, the head 170 against the plate 155, its stroke in the cylinder 120 by limiting plate 155.

现详细考虑摩擦组合件114及115,它们的结构形状相似,在图中只作一般表示。 Considering now the details of friction assemblies 114 and 115, similar to the shape of their structure, as generally indicated in the figures only. 因此,下文中仅对摩擦组合件114详细叙述。 Therefore, hereinafter only the friction member 114 combination described in detail. 本领域普通技术人员在阅读了本发明的说明之后可以了解,摩擦组合件可各有不同的结构形式,取决于装置100的应用性质。 Those of ordinary skill in the art upon reading the description of the invention can be appreciated that the friction assembly may have different structure, depending on the application properties of the device 100.

摩擦组合件114与消能装置10的摩擦组合件14大致相似,它具有一组基本相似的相间隔的楔形件,诸如楔形件175及180,其设计及结构与楔形件25及26相似。 Assembly 114 and the friction energy dissipation means 14 a friction assembly 10 is substantially similar to the wedge member having a substantially similar set of spaced apart, such as a wedge 175 and 180, and the design and structure of the wedge member 25 and 26 is similar. 一组压缩环如压缩环187、188及189,与楔形件175及180交叠,它们分别与压缩环30、33及36相似。 A set of compression rings 187, 188 and 189 as a compression ring, the wedge member 175 and 180 overlap and are similar to the compression rings 30, 33 and 36, respectively.

现详细考虑按本发明制造的另一消能装置200,具体参见图4,与消能装置100大致相似。 Considering now the further details of the present invention is produced by arc energy apparatus 200, specifically to Figure 4, the energy dissipation device 100 is substantially similar. 装置200包括活塞缸组合件212,它基本与活塞缸组合件112相似,里面容放预加载弹簧216和一对摩擦组合件214及215。 Apparatus 200 includes a piston cylinder assembly 212, which is substantially similar to the piston-cylinder assembly 112, which accommodates preload spring 216 and a pair of friction members 214 and 215 combination.

活塞缸组合件212大致与活塞缸组合件112相似,不同之处在于不包含与止动件117相似的止动件。 The piston-cylinder assembly 212 is substantially similar to the piston-cylinder assembly 112, except that does not comprise the stopper 117 similar stopper. 此外,活塞缸组合件212具有一个止动件218,与止动件118相似,而不同者为其前端235持续抵靠摩擦组合件214。 Further, the piston-cylinder assembly 212 having a stopper 218, the stopper 118 is similar, but different duration of which the distal end 235 abuts against the friction assembly 214. 于是,当活塞缸组合件212的活塞222被推动时,无论向缸220内推,或从其内向外推,由两摩擦组合件214及215形成的整个组件230,以及中间弹簧226,就按照施力方向,沿着缸220的内壁221摩擦移动。 Thus, when the piston-cylinder assembly 212 of the piston 222 is pushed, whether pushed into the cylinder 220, or pushed outwardly from inside, 230, the entire spring and an intermediate assembly formed by the two friction assemblies 214 and 215 226, according to urging direction, along the inner wall 220 of the cylinder 221 moves friction. 弹簧216的长度不变,因此施加其上的抑制力不变。 Length of the spring 216 is constant, thus restraining force is applied thereto constant.

现具体参照图8详细考虑按本发明制造的另一消能装置300,这装置大致与消能装置200相似。 Referring now specifically to FIG. 8 further detailed consideration of the present invention is produced by arc energy devices 300, which means the energy dissipation device 200 is substantially similar. 消能装置300包括一个活塞缸组合件312,一般与活塞缸组合件212相似。 Energy dissipation means 300 comprises a piston cylinder assembly 312, 212 is generally similar to the piston-cylinder assembly. 活塞缸组合件312另有一个缸320,其中容纳一个摩擦组合件314。 The piston-cylinder assembly 312 and another a cylinder 320 in which a friction receiving assembly 314.

摩擦组合件314大致与装置200的摩擦组合件214相似。 Combination of friction and the friction member 314 is substantially similar to assembly 214 of apparatus 200. 为了图示说明,图中的摩擦组合件314有三个成组的楔形件322、323和326,它们大致与上面结合装置10说明的楔形件25相似。 To illustrate, in FIG friction assembly 314 has three sets of wedges 322, 323 and 326, which is substantially above in connection with apparatus 10 of the wedge member 25 similar to the description. 图示的摩擦组合件314还有四个一组的压缩环330、333、336及337,它们与楔形件322、323及326交叠放置。 Illustrated the friction assembly 314 as well as the compression set of four rings 330,333,336 and 337, and 322, 323 thereof with the wedge member 326 disposed to overlap. 外压缩环330和337的设计及构造,一般与装置10的外压缩环30相似。 An outer compression ring 330 and the design and construction 337, typically the outer compression ring 30 apparatus 10 is similar. 内压缩环333和336一般与装置10的压缩环33相似。 The compression ring 333 and 336 is generally the compression ring 33 is similar to apparatus 10. 一对预加载双作用弹簧316及318配置在缸320内,在摩擦组合件314两侧各配置一个。 One pair of double-acting preload spring 316 disposed in the cylinder 318, and 320, each arranged on both sides of a friction assembly 314.

虽然上面已公开了本发明的各种实施例,但应理解在文后的权利要求书的确实精神和范围内,还可能,并且也考虑作各种不同的变化。 While the foregoing has disclosed various embodiments of the present invention, it is to be understood that within the spirit and scope of the claims do the required text, is also possible, and are also considered for various changes. 因此,本发明人无意以说明书摘要及本文的揭示的实际内容作限制,而应以文后之权利要求书界定发明范围。 Accordingly, the present invention is not intended to actual content disclosed herein and abstract as limiting, but should be claimed in the claims define the scope of the described invention.

Claims (10)

1.一种用于吸收振动载荷和用于消散动能的消能装置,所述装置包括:一个活塞缸组合件,它具有一个空心的缸和一个至少局部安装在所述空心缸中的活塞;一个强制作用在所述缸和所述活塞之间的摩擦组合件,用以在其间产生摩擦阻力来消散沿轴向施加在所述缸和所述活塞相互之间的大载荷;一个安放在所述空心缸中的预加载弹簧组合件,用于作用在所述摩擦组合件上,以便在所述缸和所述活塞之间产生所述摩擦阻力;所述活塞具有一个在所述摩擦组合件外部位置上沿径向伸出的扩大部;以及一个止动件,藉助与所述活塞的所述扩大部的接触而限制所述活塞和所述缸相互之间的自由相对轴向移动;其特征在于:所述活塞和所述缸的安装,使其相互间可作自由轴向移动而与所述摩擦组合件无关,从而在正常运转期间,小载荷可使所述活塞和所述缸 1. A method for absorbing shock loads and dissipate kinetic energy dissipation means, said means comprising: a piston cylinder assembly having a cylinder and a hollow at least partially mounted in said hollow piston cylinder; a frictional force between said cylinder assembly and said piston for generating friction therebetween to dissipate applied axially in said cylinder and a great load between each said piston; a placed in the preload spring assemblies said hollow cylinder, for acting on said friction assembly to generate said frictional resistance between the cylinder and the piston; the piston having a combination of the friction member enlarged portions projecting radially outer position thereof; and a stopper member contacting the enlarged portion of the piston and limit the freedom between the piston and the cylinder relative to each other by means of an axial movement; the characterized in that: said piston and said cylinder is mounted so that it can be freely mutually independent axial movement of said friction assembly, such that during normal operation, a small load enable said piston and said cylinder 相对轴向移动;所述摩擦组合件还具有一个沿轴向延伸的孔,方便所述活塞和所述缸的安装,使其相互间可自由轴向移动而与所述摩擦组合件无关;所述弹簧组件作用在所述摩擦组合件上,受阻力地推动之,当所述摩擦组合件只受小载荷作用时,可使摩擦组合件基本上自由地相对运动而不致引起大的摩擦阻力,当所述摩擦组合件只受大载荷作用时可使所述摩擦组合件受偏压而产生大的摩擦阻力;所述活塞缸组合件具有一个空间,所述空间使所述活塞在所述正常运转期间,在受小载荷作用下,在其与所述摩擦组合件相接触前可作有限度的基本上自由的相对移动。 Relative axial movement; said friction assembly further having a bore extending axially of said piston and cylinder to facilitate the mounting, it is free to move axially with each other regardless of the friction member combination; the said spring assembly acting on said friction assembly, pushed by the resistance, when the composition of the friction member only by a small load, the frictional members substantially consisting of a combination of relative movement without causing large frictional resistance, can when the friction assembly is limited only by the large load of the friction assembly is biased into a large frictional resistance; the piston assembly having a cylinder space, the piston of the space in the normal during operation, when a small load by, prior to its contact with the friction assembly may be limited substantially free relative movement.
2.根据权利要求1所述的消能装置,其特征在于所述装置还包括一个配置在所述第一摩擦组合件的相对于所述弹簧的另一侧上的另一个摩擦组合件。 2. The energy dissipation device according to claim 1, characterized in that said apparatus further comprises a phase disposed in the first friction assembly of friction another assembly on the other side of the spring for.
3.根据权利要求1所述的消能装置,其特征在于所述装置还包括另一个弹簧组合件,用于对所述摩擦组合件弹性地施加一个与所述第一个弹簧组合件相反的轴向上的偏压力。 The energy dissipating device of claim 1, further characterized in that said apparatus further comprises a spring assembly, for applying elastically claim said friction assembly with said first member opposite to a combination of spring the biasing force in the axial direction.
4.根据权利要求1所述的消能装置,其特征在于所述活塞缸组合件具有一个摩擦吸收面,所述摩擦组合件具有至少一个与所述摩擦吸收面相接触的楔形件和多个相间隔的压缩环,所述楔形件和所述压缩环交叠,以将楔形件沿径向向外推移,与所述摩擦吸收面作摩擦接触。 4. The energy dissipation device according to claim 1, wherein said piston-cylinder assembly having a friction absorbing surface, said friction wedge assembly having at least one friction surface in contact with said absorbent and a plurality of phase spaced compression ring, said compression ring and said wedge member overlapping the transition to the wedge member radially outwardly, and the friction surface in frictional contact with the absorbent.
5.根据权利要求4所述的消能装置,其特征在于所述相间隔的压缩环包括一对外压缩环,在摩擦组合件两端各放一个。 The energy dissipation device according to claim 4, characterized in that said compression ring comprises a spaced pair of outer compression ring, each placed at both ends of a friction assembly.
6.根据权利要求5所述的消能装置,其特征在于所述相间隔的压缩环还包括至少一个内压缩环。 6. The energy dissipation device according to claim 5, characterized in that said spaced apart compression rings further comprises at least one inner compression ring.
7.根据权利要求6所述的消能装置,其特征在于所述楔形件包括一个环形件,该环形件具有一个配置在中心的轴向延伸孔。 7. The energy dissipation device according to claim 6, wherein said wedge member comprises an annular member, the annular member having a centrally disposed axially extending bore.
8.根据权利要求4所述的消能装置,其特征在于所述楔形件具有至少一个轴向的裂隙口。 8. The energy dissipation device according to claim 4, wherein said wedge member having at least one fracture axial opening.
9.根据权利要求2所述的消能装置,其特征在于该消能装置还具有另一个止动件,与至少一个所述摩擦组合件相接触,所述另一个止动件设置在所述活塞上,使所述摩擦组合件之间保持一个固定的相间隔距离。 9. The energy dissipation device according to claim 2, characterized in that the energy dissipation device further includes a further stop member in contact with at least a combination of the friction member, the other stopper disposed in the the piston, the friction between the assembly to maintain a fixed relative distance.
10.根据权利要求9所述的消能装置,其特征在于所述另一个止动件适于使所述弹簧组合件采取一个给定的固定长度。 10. The energy dissipation device according to claim 9, further characterized in that said stopper member is adapted to cause the spring to take a given combination of fixed length.
CN 90107601 1990-09-05 1990-09-05 Energy damping device CN1021245C (en)

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CN 90107601 CN1021245C (en) 1990-09-05 1990-09-05 Energy damping device

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CN 90107601 CN1021245C (en) 1990-09-05 1990-09-05 Energy damping device

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CN1059587A CN1059587A (en) 1992-03-18
CN1021245C true CN1021245C (en) 1993-06-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216088B (en) 2008-01-18 2010-06-02 北京工业大学 Barrel-type friction-changing damper

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011159127A2 (en) * 2010-06-17 2011-12-22 Lg Electronics Inc. Washing machine
US9458905B2 (en) * 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method
KR101754683B1 (en) 2014-07-11 2017-07-06 엘지전자 주식회사 Washing machine
CN108633686A (en) * 2018-05-15 2018-10-12 河南科技大学 Barrel-type damping device for vegetable transplanter and damping method of device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216088B (en) 2008-01-18 2010-06-02 北京工业大学 Barrel-type friction-changing damper

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