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WO2021208134A1 - 一种单向可调大扭矩旋转变阻尼器 - Google Patents

一种单向可调大扭矩旋转变阻尼器 Download PDF

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Publication number
WO2021208134A1
WO2021208134A1 PCT/CN2020/086663 CN2020086663W WO2021208134A1 WO 2021208134 A1 WO2021208134 A1 WO 2021208134A1 CN 2020086663 W CN2020086663 W CN 2020086663W WO 2021208134 A1 WO2021208134 A1 WO 2021208134A1
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WO
WIPO (PCT)
Prior art keywords
lead screw
way
retaining ring
end cover
sleeve
Prior art date
Application number
PCT/CN2020/086663
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English (en)
French (fr)
Inventor
戈建鸣
苏瑞东
吴猛
Original Assignee
今创集团股份有限公司
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Publication date
Application filed by 今创集团股份有限公司 filed Critical 今创集团股份有限公司
Publication of WO2021208134A1 publication Critical patent/WO2021208134A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
    • F16F7/023—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together and characterised by damping force adjustment means
    • F16F7/026—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together and characterised by damping force adjustment means resulting in the damping effects being different according to direction of rotation
    • 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
    • F16F2222/04—Friction
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
    • 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
    • F16F2232/00—Nature of movement
    • F16F2232/02—Rotary

Definitions

  • the invention relates to the technical field of rotary damper, in particular to a one-way adjustable high-torque rotary variable damper.
  • the existing rotary damper has the following defects:
  • damping torque provided by the damper using damping medium or damping oil is small, which can only be applied to the rotation damping of small and medium parts, and most of them are single-turn dampers.
  • the damper designed with the friction plate is a constant damper or an adjustable constant damping, which cannot provide variable damping.
  • the technical problem to be solved by the present invention is to provide a one-way high-torque damping, which increases with the increase of the number of turns, and finally can reduce the rotation speed of the rotating part to 0, from a high rotation speed to a rotation speed of 0
  • the total number of rotations between can be fine-tuned one-way adjustable high-torque rotary variable damper.
  • a one-way adjustable high-torque rotary variable damper including a housing and a screw
  • the left side of the housing is provided with a friction end cover matched with it
  • the The right side is provided with a matching bearing end cover
  • the inner wall of the housing is provided with a protrusion that divides the inner cavity of the housing into a left inner cavity and a right inner cavity
  • the right inner cavity wall of the housing is symmetrically provided with a long slide
  • the groove, the protrusion facing the inner wall of the left cavity is symmetrically provided with short sliding grooves
  • the housing is threaded with a screw
  • the screw in the left cavity is sleeved with a one-way bearing assembly, the one-way bearing assembly and the There is relative movement between the rods and cannot rotate relative to each other.
  • the friction plate is fixed on the right side of the friction end cover.
  • the friction plate has a ring structure and is coaxial with the screw.
  • the one-way bearing assembly is fixed on the left side.
  • There is a wear plate there is a distance between the friction plate and the wear plate, the screw between the friction end cover and the one-way bearing assembly is sleeved with a secondary compression spring, and the screw located in the right chamber is provided with a screw thread matching
  • the nut, the lead screw between the one-way bearing assembly and the nut is sleeved with a main compression spring, and the nut is provided with a convex block that cooperates with the long chute and moves in the long chute, so that the nut can only be carried in the housing Move, cannot rotate, therefore, drive the nut to move by rotating the lead screw.
  • the one-way bearing assembly includes a sliding sleeve, a retaining ring, and a one-way bearing sleeve.
  • the sliding sleeve and the screw support are connected by a key, so that the transmission torque between the sliding sleeve and the screw is realized.
  • a one-way bearing is arranged between the sliding shaft sleeve and the one-way bearing sleeve, a retaining ring is sleeved on the right end of the sliding sleeve, and a short sliding groove is provided on the retaining ring to match
  • the restricting protrusion of the circlip makes the retaining ring can only move in the housing, and cannot rotate.
  • the one-way bearing sleeve is fixedly installed with a wear plate on the left side.
  • the inner cavity of the sliding sleeve is symmetrically provided with convex keys, and the outer surface of the sliding sleeve is sequentially provided with a first retaining ring groove, a key groove and a step boss from left to right, and the retaining ring ring groove is provided with The elastic retaining ring for the shaft, the one-way bearing is fixedly installed on the sliding sleeve through the key and the keyway.
  • the inner cavity wall of the housing is provided with integrally arranged protrusions, and the protrusions are stepped sleeves with a cross-sectional shape of "L".
  • the inner wall of the stepped sleeves is provided with symmetrically arranged long sliding grooves, and the stepped sleeves A short chute is opened on the inner wall facing the inner cavity on the left side, and the long chute and the short chute are vertically arranged.
  • a bearing is arranged between the friction end cover, the bearing end cover and the lead screw, and a small bearing end cover is fixedly installed on the sides of the friction end cover and the bearing end cover.
  • the inner wall of the one-way bearing sleeve close to the retaining ring is provided with a second retaining ring ring groove, and an elastic retaining ring for a hole is clamped in the second retaining ring ring groove.
  • a spacer sleeve is provided between the sliding shaft sleeve and the retaining ring.
  • the beneficial effects of the present invention are: in the limited space of the present invention, the rotating screw can perform multiple rotations, and as the number of rotations increases, the damping is continuously increased, and the damping force can be fine-tuned. , Provides a one-way variable damping, which promotes the gradual reduction of the rotation speed of the rotating screw, and the final rotation speed is reduced to 0.
  • the speed reduction process of the rotating screw is more stable. It can provide large torque output.
  • the total number of rotations can be fine-tuned, which takes up space. smaller.
  • Figure 1 is a perspective view of the present invention
  • Figure 2 is a cross-sectional view of the present invention
  • Figure 3 is an exploded view of the present invention
  • Figure 4 is a schematic diagram of the structure of the housing of the present invention.
  • Figure 5 is a schematic diagram of the structure of the sliding sleeve of the present invention.
  • a one-way adjustable high-torque rotary variable damper as shown in Figures 1 to 5 includes a housing 1 and a screw 8.
  • the left side of the housing 1 is provided with a friction end cover 2 that cooperates with it.
  • the right side is provided with a matching bearing end cover 16
  • the inner wall of the housing 1 is provided with a protrusion 18 that divides the inner cavity of the housing 1 into a left inner cavity and a right inner cavity, and the right inner cavity wall of the housing 1
  • a long chute 19 is formed symmetrically on the upper side
  • a short chute 20 is formed symmetrically on the inner wall of the inner cavity facing the left side of the protrusion 18,
  • a lead screw 8 is penetrated in the housing 1, and a one-way bearing assembly 4 is sleeved on the lead screw 8 located in the left chamber.
  • the one-way bearing assembly 4 and the lead screw move relative to each other and cannot rotate relatively.
  • the right side of the cover 2 is fixedly equipped with a friction plate 5.
  • the friction plate has a ring structure and is coaxial with the screw 8.
  • the left side of the one-way bearing assembly 4 is fixedly equipped with a wear plate 15, the friction plate 5 and The wear plates 15 are spaced apart, and the lead screw 8 between the friction end cover 2 and the one-way bearing assembly 4 is sleeved with a secondary compression spring 7,
  • the screw 8 located in the right chamber is provided with a nut 10 fitted with its threads.
  • the screw 8 between the one-way bearing assembly 4 and the nut 10 is sleeved with a main compression spring 6, and the nut 10 is provided with a long sliding
  • the groove 19 is matched with the protrusion 29 that moves in the long sliding groove 19, so that the nut can only move in the housing and cannot rotate. Therefore, the nut 10 is driven to move by rotating the screw 8.
  • the screw 8 is divided into a long-step optical axis portion, a middle threaded portion, and a short-step optical axis portion.
  • the long stepped optical axis of the screw 8 is located in the left cavity of the housing 1, and the middle threaded portion of the screw 8 is located in the housing. 1.
  • the one-way bearing assembly 4 includes a sliding sleeve 12, a retaining ring 11, and a one-way bearing sleeve 14.
  • the sliding sleeve 12 and the screw 8 bracket are connected by a key, so that the sliding sleeve 12 and the screw 8 can transmit torque, and at the same time ,
  • the sliding sleeve 12 and the screw 8 realize relative movement
  • a one-way bearing 13 is provided between the sliding sleeve 12 and the one-way bearing sleeve 14, and the right end of the sliding sleeve 12 is sleeved with a retaining ring 11
  • the retaining ring 11 is provided with a limiting protrusion 28 that cooperates with the short sliding groove 20, so that the retaining ring 11 can only move in the housing 1, and cannot rotate.
  • a wear plate 15 is fixedly installed on the left side of the one-way bearing sleeve 14.
  • the wear plate 15 rotates clockwise synchronously through the one-way bearing sleeve 14, the one-way bearing 13 and the lead screw 8, and the lead screw 8 is counterclockwise.
  • the wear plate 15 has an annular structure and is coaxial with the one-way bearing sleeve 14.
  • the inner cavity of the sliding sleeve 12 is provided with convex keys 21 symmetrically.
  • the outer surface of the sliding sleeve 12 is sequentially provided with a first retaining ring groove 24, a key groove 22, and a step boss 23 from left to right.
  • the retaining ring groove An elastic retaining ring 25 for the shaft is opened in the 24, and the one-way bearing 13 is fixedly installed on the sliding sleeve 12 through a key and a keyway 22.
  • the inner wall of the housing 1 is provided with an integrally arranged protrusion 18, the protrusion 18 is a stepped sleeve with a cross-sectional shape of "L”, and the inner wall of the stepped sleeve is provided with symmetrically arranged long sliding grooves 19, the steps A short chute 20 is opened on the inner wall of the sleeve facing the left cavity, and the long chute 19 and the short chute 20 are vertically arranged.
  • a bearing 9 is arranged between the friction end cover 2, the bearing end cover 16 and the lead screw 8, and a small bearing end cover 17 is fixedly installed on the sides of the friction end cover 2 and the bearing end cover 16.
  • the inner wall of the one-way bearing sleeve 14 close to the retaining ring 11 is provided with a second retaining ring ring groove 26, and an elastic retaining ring 27 for a hole is clamped in the second retaining ring ring groove 26.
  • a spacer 30 is provided between the sliding sleeve 12 and the retaining ring 11.
  • the time of damping intervention can be adjusted by rotating the screw, so as to achieve the same effect as mentioned above.
  • the heavy object is pulled upwards, or when the disc is rotated to lift the heavy object, the one-way bearing in the damper does not have a damping force on the rotating disc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

一种单向可调大扭矩旋转变阻尼器，壳体(1)内穿设有丝杠(8)，位于左侧腔室的丝杠(8)上套设有单向轴承组件(4)，摩擦端盖(2)的右侧面上固装有摩擦片(5)，单向轴承组件(4)的左侧面上固装有磨耗板(15)，摩擦片(5)与磨耗板(15)之间具有间距，摩擦端盖(2)与单向轴承组件(4)之间的丝杠(8)上套设有副压簧(7)，位于右侧腔室的丝杠(8)上设有与其螺纹配合的螺母(10)，单向轴承组件(4)与螺母(10)之间的丝杠(8)上套设有主压簧(6)，螺母(10)上设有与长滑槽(19)配合并在长滑槽(19)内移动的凸块(29)。旋转丝杠可进行多圈旋转，在最后旋转几圈时，提供一种单向可变阻尼，促使旋转丝杠的转速逐渐降低，最终转速降低为0，旋转丝杠降速过程更加平稳，能够提供大扭矩输出，旋转总圈数可进行微调，占用空间更小。

Description

一种单向可调大扭矩旋转变阻尼器 技术领域
本发明涉及旋转阻尼器技术领域，尤其是一种单向可调大扭矩旋转变阻尼器。
背景技术
目前，市场上的旋转阻尼器种类很多，有扭簧式旋转阻尼器、利用阻尼介质或阻尼油设计的阻尼器、使用摩擦片设计的恒定阻尼器。
现有的旋转阻尼器中存在以下几点缺陷：
a)、使用阻尼介质或阻尼油的阻尼器提供的阻尼扭矩较小，只能适用于中小部件旋转阻尼，且多数为单圈阻尼器。
b)、利用扭簧实现的旋转阻尼器，在有限的空间下，很难实现大扭矩阻尼及多圈数阻尼。
c)、使用摩擦片设计的阻尼器为恒定阻尼器或者可调节的恒定阻尼，不能提供可变阻尼。
发明内容
本发明要解决的技术问题是：提供一种单向大扭矩阻尼，该阻尼随着转动圈数的增加而增大，最终能够将旋转件的转速降低为0，从高转速降低到转速为0之间的转动总圈数可实现微调的单向可调大扭矩旋转变阻尼器。
本发明解决其技术问题所采用的技术方案是：一种单向可调大扭矩旋转变阻尼器，包括壳体和丝杠，壳体的左侧设有与其配合的摩擦端盖，壳体的右侧设有与其配合的轴承端盖，壳体内壁上设有将壳体内腔分为左侧内腔和右侧内腔的凸起,壳体的右侧内腔壁上对称开设有长滑槽，凸起朝向左侧内腔的内壁上 对称开设有短滑槽，壳体内穿设有丝杠，位于左侧腔室的丝杠上套设有单向轴承组件，单向轴承组件与丝杠之间有相对移动，不能相对转动，摩擦端盖的右侧面上固装有摩擦片，摩擦片为环状结构，且与丝杠同轴，单向轴承组件的左侧面上固装有磨耗板，摩擦片与磨耗板之间具有间距，摩擦端盖与单向轴承组件之间的丝杠上套设有副压簧，位于右侧腔室的丝杠上设有与其螺纹配合的螺母，单向轴承组件与螺母之间的丝杠上套设有主压簧，螺母上设有与长滑槽配合并在长滑槽内移动的凸块，致使螺母只能在壳体中进行移动，不能转动，因此，通过转动丝杠带动螺母移动。
进一步的，单向轴承组件包括滑轴套、挡圈以及单向轴承套，滑轴套与丝杠支架通过键连接，致使滑轴套与丝杠之间实现传递扭矩，同时，滑轴套与丝杠之间实现相对移动，所述滑轴套与单向轴承套之间设有单向轴承，滑轴套的右端头部套设有挡圈，挡圈上设有与短滑槽相配合的限制凸块，致使挡圈只能在壳体中进行移动，不能转动，挡圈与滑轴套之间存在相对旋转运动，单向轴承套的左侧面上固定安装有磨耗板，磨耗板通过单向轴承套、单向轴承与丝杠之间存在顺时针同步转动，丝杠逆时针转动时，磨耗板与丝杠之间存在相对转动，且磨耗板为环状结构，与单向轴承套同轴。
进一步的，滑轴套的内腔中对称设有凸键，滑轴套的外表面上从左往右依次设有第一挡圈环槽、键槽和台阶凸台，挡圈环槽内开设有轴用弹性挡圈，单向轴承通过键和键槽固定安装在滑轴套上。
进一步的，壳体的内腔壁上设有一体化设置的凸起，凸起为横向截面形状呈“L”型的台阶套，台阶套的内壁上开设有对称设置的长滑槽，台阶套朝向左侧内腔的内壁上开设有短滑槽，长滑槽与短滑槽之间为垂直设置。
进一步的，摩擦端盖、轴承端盖与丝杠之间设有轴承，摩擦端盖、轴承端 盖的侧边上均固定安装有轴承小端盖。
进一步的，靠近挡圈的单向轴承套内壁上开设有第二挡圈环槽，第二挡圈环槽内卡设有孔用弹性挡圈。
进一步的，滑轴套与挡圈之间设有隔套。
本发明的有益效果是：本发明在有限的空间内，旋转丝杠可进行多圈旋转，且随着转动圈数增加，阻尼不断增大，并且阻尼力可进行微调，在最后旋转几圈时，提供一种单向可变阻尼，促使旋转丝杠的转速逐渐降低，最终转速降低为0，旋转丝杠降速过程更加平稳，能够提供大扭矩输出，旋转总圈数可进行微调，占用空间更小。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明的立体图；
图2是本发明的剖视图；
图3是本发明的爆炸图；
图4是本发明壳体的结构示意图；
图5是本发明滑轴套的结构示意图。
图中：1.壳体，2.摩擦端盖，3.丝杠螺母副，4.单向轴承组件，5.摩擦片，6.主压簧，7.副压簧，8.丝杠，9.轴承，10.螺母，11.挡圈，12.滑轴套，13.单向轴承，14.单向轴承套，15.磨耗板，16.轴承端盖，17.轴承小端盖，18.凸起，19.长滑槽，20.短滑槽，21.凸键，22.键槽，23.台阶凸台，24.第一挡圈环槽，25.轴用弹性挡圈，26.第二挡圈环槽，27.孔用弹性挡圈，28.限制凸块，29.凸块，30.隔套。
具体实施方式
现在结合附图和优选实施例对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
如图1～5所示的一种单向可调大扭矩旋转变阻尼器，包括壳体1和丝杠8，壳体1的左侧设有与其配合的摩擦端盖2，壳体1的右侧设有与其配合的轴承端盖16，壳体1内壁上设有将壳体1内腔分为左侧内腔和右侧内腔的凸起18,壳体1的右侧内腔壁上对称开设有长滑槽19，凸起18朝向左侧内腔的内壁上对称开设有短滑槽20，
壳体1内穿设有丝杠8，位于左侧腔室的丝杠8上套设有单向轴承组件4，单向轴承组件4与丝杠之间有相对移动，不能相对转动，摩擦端盖2的右侧面上固装有摩擦片5，摩擦片为环状结构，且与丝杠8同轴，单向轴承组件4的左侧面上固装有磨耗板15，摩擦片5与磨耗板15之间具有间距，摩擦端盖2与单向轴承组件4之间的丝杠8上套设有副压簧7，
位于右侧腔室的丝杠8上设有与其螺纹配合的螺母10，单向轴承组件4与螺母10之间的丝杠8上套设有主压簧6，螺母10上设有与长滑槽19配合并在长滑槽19内移动的凸块29，致使螺母只能在壳体中进行移动，不能转动，因此，通过转动丝杠8带动螺母10移动。
丝杠8分为长台阶光轴部、中间螺纹部以及短台阶光轴部，丝杠8的长台阶光轴部位于壳体1的左侧内腔，丝杠8的中间螺纹部位于壳体1的右侧内腔。
单向轴承组件4包括滑轴套12、挡圈11以及单向轴承套14，滑轴套12与丝杠8支架通过键连接，致使滑轴套12与丝杠8之间实现传递扭矩，同时，滑轴套12与丝杠8之间实现相对移动，所述滑轴套12与单向轴承套14之间设有单向轴承13，滑轴套12的右端头部套设有挡圈11，挡圈11上设有与短滑槽20 相配合的限制凸块28，致使挡圈11只能在壳体1中进行移动，不能转动，挡圈11与滑轴套12之间存在相对旋转运动，单向轴承套14的左侧面上固定安装有磨耗板15，磨耗板15通过单向轴承套14、单向轴承13与丝杠8之间存在顺时针同步转动，丝杠8逆时针转动时，磨耗板15与丝杠8之间存在相对转动，且磨耗板15为环状结构，与单向轴承套14同轴。
滑轴套12的内腔中对称设有凸键21，滑轴套12的外表面上从左往右依次设有第一挡圈环槽24、键槽22和台阶凸台23，挡圈环槽24内开设有轴用弹性挡圈25，单向轴承13通过键和键槽22固定安装在滑轴套12上。
壳体1的内腔壁上设有一体化设置的凸起18，凸起18为横向截面形状呈“L”型的台阶套，台阶套的内壁上开设有对称设置的长滑槽19，台阶套朝向左侧内腔的内壁上开设有短滑槽20，长滑槽19与短滑槽20之间为垂直设置。
摩擦端盖2、轴承端盖16与丝杠8之间设有轴承9，摩擦端盖2、轴承端盖16的侧边上均固定安装有轴承小端盖17。
靠近挡圈11的单向轴承套14内壁上开设有第二挡圈环槽26，第二挡圈环槽26内卡设有孔用弹性挡圈27。
滑轴套12与挡圈11之间设有隔套30。
具体的顺时针转动丝杠8带动螺母10向左方向移动一定距离后，同时丝杠8带动磨耗板15同步转动，螺母10开始压缩主压簧6，主压簧6推动单向轴承组件4向左移动，最终顺时针转动的磨耗板15与固定的摩擦片5接触并产生摩擦力，对丝杠8产生阻尼作用，阻止其顺时针旋转，当丝杠8继续旋转时，磨耗板15与摩擦片5之间的压力增大，导致摩擦力增大，对丝杠8产生的阻尼越大，最终达到一个平衡状态，即丝杠8的转速为0。
以一个重量为100Kg的重物为例，绳索缠绕在通过直径为50mm的圆盘上， 圆盘与丝杠同轴固定，绳索自由端固定在重物上，重物从高空降落时，通过绳索带动丝杠顺时针旋转，通过阻尼器作用致使丝杠的转速降低，最终使得重物从高空下落的过程中，开始下降时为自由落体运动，速度较快，下降的后半段为减速运动，最终重物在即将到达地面时，速度降为0，因此，通过阻尼器对重物在高空下降的过程中起到缓冲作用。当重物在不同高度时，可通过旋转丝杠进行调节阻尼介入的时间，从而完成上述相同的效果。当向上拉重物时，或转动圆盘提升重物时，通过阻尼器中的单向轴承作用，对转动圆盘没有阻尼力作用。
以上说明书中描述的只是本发明的具体实施方式，各种举例说明不对本发明的实质内容构成限制，所属技术领域的普通技术人员在阅读了说明书后可以对以前所述的具体实施方式做修改或变形，而不背离发明的实质和范围。

Claims (7)

  1. 一种单向可调大扭矩旋转变阻尼器，包括壳体(1)和丝杠(8)，壳体(1)的左侧设有与其配合的摩擦端盖(2)，壳体(1)的右侧设有与其配合的轴承端盖(16)，其特征在于：所述的壳体(1)内壁上设有将壳体(1)内腔分为左侧内腔和右侧内腔的凸起(18),壳体(1)的右侧内腔壁上对称开设有长滑槽(19)，凸起(18)朝向左侧内腔的内壁上对称开设有短滑槽(20)，
    壳体(1)内穿设有丝杠(8)，位于左侧腔室的丝杠(8)上套设有单向轴承组件(4)，摩擦端盖(2)的右侧面上固装有摩擦片(5)，单向轴承组件(4)的左侧面上固装有磨耗板(15)，摩擦片(5)与磨耗板(15)之间具有间距，摩擦端盖(2)与单向轴承组件(4)之间的丝杠(8)上套设有副压簧(7)，
    位于右侧腔室的丝杠(8)上设有与其螺纹配合的螺母(10)，单向轴承组件(4)与螺母(10)之间的丝杠(8)上套设有主压簧(6)，螺母(10)上设有与长滑槽(19)配合并在长滑槽(19)内移动的凸块(29)。
  2. 如权利要求1所述的一种单向可调大扭矩旋转变阻尼器，其特征在于：所述的单向轴承组件(4)包括滑轴套(12)、挡圈(11)以及单向轴承套(14)，所述滑轴套(12)与单向轴承套(14)之间设有单向轴承(13)，滑轴套(12)的右端头部套设有挡圈(11)，挡圈(11)上设有与短滑槽(20)相配合的限制凸块(28)，单向轴承套(14)的左侧面上固定安装有磨耗板(15)。
  3. 如权利要求2所述的一种单向可调大扭矩旋转变阻尼器，其特征在于：所述的滑轴套(12)的内腔中对称设有凸键(21)，滑轴套(12)的外表面上从左往右依次设有第一挡圈环槽(24)、键槽(22)和台阶凸台(23)，挡圈环槽(24)内开设有轴用弹性挡圈(25)，单向轴承(13)通过键和键槽(22)固定安装在滑轴套(12)上。
  4. 如权利要求1所述的一种单向可调大扭矩旋转变阻尼器，其特征在于： 所述的壳体(1)的内腔壁上设有一体化设置的凸起(18)，凸起(18)为横向截面形状呈“L”型的台阶套，台阶套的内壁上开设有对称设置的长滑槽(19)，台阶套朝向左侧内腔的内壁上开设有短滑槽(20)，长滑槽(19)与短滑槽(20)之间为垂直设置。
  5. 如权利要求1所述的一种单向可调大扭矩旋转变阻尼器，其特征在于：所述的摩擦端盖(2)、轴承端盖(16)与丝杠(8)之间设有轴承(9)，摩擦端盖(2)、轴承端盖(16)的侧边上均固定安装有轴承小端盖(17)。
  6. 如权利要求2所述的一种单向可调大扭矩旋转变阻尼器，其特征在于：靠近挡圈(11)的单向轴承套(14)内壁上开设有第二挡圈环槽(26)，第二挡圈环槽(26)内卡设有孔用弹性挡圈(27)。
  7. 如权利要求2所述的一种单向可调大扭矩旋转变阻尼器，其特征在于：所述的滑轴套(12)与挡圈(11)之间设有隔套(30)。
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