CN104048006B

CN104048006B - A kind of damping unit for being used in stretcher and a kind of damping device for being used in stretcher

Info

Publication number: CN104048006B
Application number: CN201410242809.5A
Authority: CN
Inventors: 钱香云
Original assignee: Shanghai Beixu Automobile Technology Co Ltd
Current assignee: Shanghai Beixu Automobile Technology Co., Ltd.
Priority date: 2014-06-03
Filing date: 2014-06-03
Publication date: 2018-03-27
Anticipated expiration: 2034-06-03
Also published as: CN104048006A

Abstract

The present invention relates to technical field of engines, discloses a kind of damping unit for being used in stretcher and a kind of damping device for being used in stretcher.In order to solve the problems, such as that prior art damping mechanism can not provide asymmetric damping, it is proposed that technical scheme.Invention device is characterized in：Including：The damping mechanism cavity of pushing block, damping block, and circular wall；High-damping in pushing structure promotes the high-damping resistance surface of face and damping block to offset, and the low resistance in pushing structure promotes the low resistance resistance surface of face and damping block to offset；Distance of the high-damping resistance surface away from shaft center line is less than distance of the low resistance resistance surface away from shaft center line；Damping unit includes being obliquely installed for shaft center line, is obliquely installed as any one in seven；Pushing block axially offsets with damping block and promotes damping block and damping mechanism cavity to offset.Beneficial effect is：Frictional force of asymmetric damping, etc. can be provided.

Description

A kind of damping unit for being used in stretcher and a kind of damping for being used in stretcher Equipment

Technical field

The present invention relates to the damping mechanism that engine tensioner uses, more specifically it is related to one kind and is used in The damping unit and a kind of damping device for being used in stretcher of tight device.

Background technology

In motor head accessory system, belt vibration caused by being operated due to engine is not desirable to；Belt shakes Problem caused by dynamic is that on the one hand vibration causes comfortableness to decline, and on the other hand causes the reduction of accessory wheel system bulk life time.Institute So that stretcher needs to reduce vibration by damping mechanism.

In belt away from (i.e. stretcher uninstall direction) on tensioning wheel direction, in order to keep the compliance of stretcher and in order to Keep belt to have enough tension force, it is expected that the damping value in this direction is small as far as possible.

If the engine in operating slows down suddenly, the larger annex meeting tightening belt slack list of the rotary inertia such as motor, drive Stretcher is moved to loading direction, belt is shortened, and drive belt causes belt to be skidded on bent axle to Crankshaft motion, Produce the bad phenomenons such as abnormal sound.And if stretcher has enough damping forces on loading direction, it can substantially suppress such case Occur.

If the engine in operating accelerates suddenly, due to the effect of the larger annex of the rotary inertias such as motor, bent axle meeting Pilled-in selvedge belt is tensed, is allowed to shorten, and drives slack list belt to make slack list more loose to motor movement, length increase, cause belt to exist Skidded on motor.And if stretcher damping force on uninstall direction is sufficiently small, the growth of meeting summary responses slack list belt, and protect Holding belt has enough tension force, so as to substantially inhibit belt slippage situation to occur.

In summary situation, it is desirable to which stretcher has larger damping on loading direction, and foot is damped on uninstall direction It is enough small.

Existing self-action stretcher, although all carrying damping mechanism mostly, for damping belt vibration, these tensionings The damping mechanism of device, the overwhelming majority is symmetrically to damp, i.e., the damping value in stretcher loading and uninstall direction is just as 's.

The content of the invention

In order to solve the problems, such as that prior art damping mechanism can not provide asymmetric damping, the present invention proposes following technology Scheme.

1. a kind of damping unit for being used in stretcher, including：The damping mechanism chamber of pushing block, damping block, and circular wall Body；

Described damping block includes：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside；

The circular wall surface configuration of the rubbing surface of damping block and the damping mechanism cavity is coincide, and two faces are named as One group of working face, two faces have common axis of rotation heart line and two faces form fricting working surface；

Around shaft center line, the rubbing surface of damping block and the circular wall surface generation of damping mechanism cavity are relative back and forth Frictional rotation；

Distance of the high-damping resistance surface away from shaft center line is less than distance of the low resistance resistance surface away from shaft center line；

Described pushing block includes pushing structure, and pushing structure includes high-damping and promotes face and low resistance to promote face；

High-damping in pushing structure promotes the high-damping resistance surface of face and damping block to offset, and two faces are named as second Group working face；

Low resistance in pushing structure promotes the low resistance resistance surface of face and damping block to offset, and two faces are named as the 3rd Group working face；

The inner side of the damping block and described pushing block, the adjacent part of the rwo are named as the 4th group of working face；It is described It is adjacent be offset it is adjacent or described it is adjacent be that gap is adjacent；

Described damping unit includes being obliquely installed；Described inclination, it is for shaft center line；Described inclines Tiltedly set, it is any one in following seven：

A. second group of working face is obliquely installed；B. the 3rd group of working face is obliquely installed；C. the 4th group of work for offseting adjacent Face is obliquely installed；D. second group of working face is obliquely installed, and the 3rd group of working face is obliquely installed；E. second group of working face tilts Set, and the 4th group of working face for offseting adjacent is obliquely installed；F. the 3rd group of working face is obliquely installed, and is offseted adjacent 4th group of working face is obliquely installed；G. second group of working face is obliquely installed, and the 3rd group of working face is obliquely installed, and is offseted adjacent The 4th group of working face be obliquely installed；

Described pushing block and described damping block axially offset and promoted the circle of damping block rubbing surface and damping mechanism cavity Shape wall offsets.

2. damping block described in, quantity are more than or equal to 1；

Damping block be two or more, then the pushing structure of pushing block include promote separation structure；Promote the number of separation structure Amount is consistent with the quantity of damping block；Include in each promotion separation structure：High-damping promotes face, and low resistance to promote face；Often One damping block includes：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside.

3. damping block described in is in covering of the fan shape, and described fan-like pattern refers to the paper shape after paper folding fan expansion；The fan Face shape includes small arc surface and the great circle cambered surface in outside and two sides of inner side；Two described sides, one side The high-damping of regional area and pushing block in face promotes face inconsistent, and this regional area is diametrically apart from shaft center line To be near；Two described sides, the low resistance of regional area and pushing block in its another side promote face inconsistent, and this Regional area is diametrically remote apart from shaft center line.

4. damping block described in, its outside is big circular arc, and its inner side is small circular arc, and its both sides is as follows；

Described both sides, its side are in two line segments, i.e.,：The straight line of radial direction outside, including oblique line；Foregoing two line, straight line are Low resistance resistance surface, oblique line, which is formed, avoids region；

Described both sides, its opposite side are in two line segments, i.e.,：Oblique line outside, including the straight line of radial direction；Foregoing two line, straight line It is high-damping resistance surface, oblique line, which is formed, avoids region.

5. damping block described in is in fan-like pattern, and described fan-like pattern refers to the paper shape after paper folding fan expansion, i.e., described Damping block, its outside be great circle arc, and its inner side be roundlet arc, and its both sides is the straight line of gathering；

Low resistance promotes face and high-damping resistance surface is the structural plane of projection；

The side of damping block, it promotes face to be offseted in a manner of plane-plane contact with low resistance, and the place that offsets is far from outside great circle Arc is near and remote from inner side small arc-shaped；The opposite side of damping block, it promotes face to be offseted in a manner of plane-plane contact with high-damping, and phase It is remote and near from inner side small arc-shaped far from outside orthodrome to place.

6. stretcher described in includes base, rocking arm and central shaft；The end of the rocking arm is provided with end cap；

Described damping mechanism cavity is arranged on rocking arm end；Described central shaft, its one end are fixedly connected with base, its Body portion is rotatablely connected with rocking arm end, and its other end is fixedly connected with pushing block and end cap；

Described pushing block and described end cap merge manufacture and are integrated, or described pushing block and described end cap split system Make.

7. stretcher described in includes base, rocking arm and central shaft；

Described damping mechanism cavity is arranged in rocking arm, described pushing block and described base, and the rwo merges manufacture It is integrated, or the rwo separately manufacturing；Described central shaft, its one end and rocking arm are rotatablely connected, its other end and pushing block and Base is fixedly connected.

8. stretcher described in includes base, rocking arm and central shaft；

Described damping mechanism cavity is set in the base；Described pushing block and described rocking arm, the rwo merges manufacture It is integrated, or the rwo separately manufacturing；Described central shaft, its one end are fixedly connected with rocking arm and pushing block, its other end with Base rotation connects.

9. stretcher described in includes base, rocking arm and central shaft.

10. damping unit described in includes central shaft；Central shaft, it is fixedly connected with pushing block, itself and damping mechanism cavity Rotation connection.

11. damping unit described in includes central shaft；Central shaft, itself and pushing block are rotatablely connected, itself and damping mechanism cavity It is fixedly connected.

12. stretcher described in includes base, rocking arm and central shaft；Described damping mechanism cavity is arranged on rocking arm end Portion；Described pushing block is located in the bottom of damping mechanism cavity；Described central shaft, its situation about connecting respectively from top to bottom Have：It is fixedly connected with base, is rotatablely connected with rocking arm end, is fixedly connected with pushing block.

13. include：The damping mechanism cavity of pushing block, damping block, and truncated cone wall；

Described damping block includes：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside；Damping The truncated cone wall surface shape of the rubbing surface of block and the damping mechanism cavity is coincide, and two faces are named as the 5th group of work Face, two faces have common axis of rotation heart line and two faces form fricting working surface；

Around shaft center line, the rubbing surface of damping block occurs relative with the truncated cone wall surface of damping mechanism cavity Frictional rotation back and forth；

High-damping in pushing structure promotes the high-damping resistance surface of face and damping block to offset, and two faces are named as the 6th Group working face；

Low resistance in pushing structure promotes the low resistance resistance surface of face and damping block to offset, and two faces are named as the 7th Group working face；

Described pushing block and described damping block axially offset and promoted the circle of damping block rubbing surface and damping mechanism cavity Taper type wall offsets.

14. the inner side of the damping block and described pushing block, the adjacent part of the rwo is named as the 8th group of working face；Institute State it is adjacent be offset it is adjacent or described it is adjacent be that gap is adjacent；

Described damping device includes being obliquely installed；Described inclination, it is for shaft center line；Described inclines Tiltedly set, it is any one in following seven：

A. the 6th group of working face is obliquely installed；B. the 7th group of working face is obliquely installed；C. the 8th group of work for offseting adjacent Face is obliquely installed；D. the 6th group of working face is obliquely installed, and the 7th group of working face is obliquely installed；E. the 6th group of working face tilts Set, and the 8th group of working face for offseting adjacent is obliquely installed；F. the 7th group of working face is obliquely installed, and is offseted adjacent 8th group of working face is obliquely installed；G. the 6th group of working face is obliquely installed, and the 7th group of working face is obliquely installed, and is offseted in resistance Place is obliquely installed.

15. damping block described in, quantity are more than or equal to 1；

Damping block be two or more, then the pushing structure of pushing block include promote separation structure；Promote the number of separation structure Amount is consistent with the quantity of damping block；Including high-damping in each promotion separation structure promotes face and low resistance to promote face；Each resistance Buddhist nun's block includes：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside.

16. damping block described in is in covering of the fan shape, and described fan-like pattern refers to the paper shape after paper folding fan expansion；The fan Face shape includes small arc surface and the great circle cambered surface in outside and two sides of inner side；Two described sides, one side The high-damping of regional area and pushing block in face promotes face inconsistent, and this regional area is diametrically apart from shaft center line To be near；Two described sides, the low resistance of regional area and pushing block in its another side promote face inconsistent, and this Regional area is diametrically remote apart from shaft center line.

17. damping block described in, its outside is big circular arc, and its inner side is small circular arc, and its both sides is as follows；

18. damping block described in is in fan-like pattern, and described fan-like pattern refers to the paper shape after paper folding fan expansion, i.e., described Damping block, its outside be great circle arc, and its inner side be roundlet arc, and its both sides is the straight line of gathering；

19. stretcher described in includes base, rocking arm and central shaft；The end of the rocking arm is provided with end cap；

20. stretcher described in includes base, rocking arm and central shaft；

21. stretcher described in includes base, rocking arm and central shaft；

22. stretcher described in includes base, rocking arm and central shaft.

23. damping device described in includes central shaft；Central shaft, it is fixedly connected with pushing block, itself and damping mechanism cavity Rotation connection.

24. damping device described in includes central shaft；Central shaft, itself and pushing block are rotatablely connected, itself and damping mechanism cavity It is fixedly connected.

25. stretcher described in includes base, rocking arm and central shaft；Described damping mechanism cavity is arranged on rocking arm end Portion；Described pushing block is located in the bottom of damping mechanism cavity；Described central shaft, its situation about connecting respectively from top to bottom Have：It is fixedly connected with base, is rotatablely connected with rocking arm end, is fixedly connected with pushing block.

The beneficial effects of the invention are as follows：

Inventive technique damping mechanism can provide the frictional force of asymmetric damping, and dissymmetryc coefficient value is higher；In addition, make With the stretcher of the technology of the present invention lifting prior art, difficulty is low, and original production equipment need not carry out more transformation.

Brief description of the drawings

Fig. 1 is one of schematic diagram of invention, and in this figure, damping number of blocks is 1, second group of working face and the 3rd in this figure Group working face is obliquely installed, and the cross hairs in figure is shaft center line；

Fig. 2 is damping block and pushing block schematic diagram in Fig. 1；

Fig. 3 is the damping block schematic diagram in Fig. 1；

Fig. 4 is Fig. 3 rearview；

Fig. 5 is Fig. 3 left view；

Fig. 6 is the pushing block schematic diagram in Fig. 1；

Fig. 7 is Fig. 6 rearview；

Fig. 8 is Fig. 6 right view；

Fig. 9 is Fig. 6 left view；

Figure 10 is the schematic perspective view of pushing block in Fig. 1；

Figure 11 is the schematic perspective view of damping block in Fig. 1；

Figure 12 is Fig. 1 contrast situation schematic diagram, and in this figure, damping number of blocks is 1, second group of working face and the in figure Three groups of working faces are not obliquely installed, and the cross hairs in figure is shaft center line；

Figure 13 is damping block and pushing block schematic diagram in Figure 12；

Figure 14 is the damping block schematic diagram in Figure 12；

Figure 15 is Figure 14 rearview；

Figure 16 is Figure 14 left view；

Figure 17 is the pushing block schematic diagram in Figure 12；

Figure 18 is Figure 17 rearview；

Figure 19 is Figure 17 left view；

Figure 20 is Figure 17 right view；

Figure 21 is the schematic perspective view of pushing block in Figure 12；

Figure 22 is the schematic perspective view of damping block in Figure 12；

Figure 23 is one of mechanics analysis figure；

Figure 24 is the two of mechanics analysis figure；

Figure 25 is the two of the schematic diagram of invention；

Figure 26 is the schematic perspective view of pushing block in Figure 25；

Figure 27 is the schematic perspective view of damping block in Figure 25；

Figure 28 is the three of the schematic diagram of invention；

Figure 29 is the pushing block schematic perspective view in Figure 28；

Figure 30 is pushing block and damping block schematic perspective view in Figure 28, and the damping block on figure top is expressed with dotted line, figure bottom Damping block omit do not draw；

Figure 31 is the pushing block schematic diagram isolated from Figure 30；The pushing block low resistance of this figure left part promotes face, its hatching The low resistance resistance surface of region and damping block offsets；The pushing block high-damping of this figure right part promotes face, its hatched region and damping The high-damping resistance surface of block offsets；

Figure 32 is the damping block schematic diagram separated from Figure 30；The damping block low resistance resistance surface of this figure left part, its Hatched region promotes face to offset with pushing block low resistance；The damping block high-damping resistance surface of this figure right part, its hatched region with Pushing block high-damping promotes face to offset；

Figure 33 is the three of mechanics analysis figure；

Figure 34 is the four of mechanics analysis figure；

Figure 35 is the four of the schematic diagram of invention；

Figure 36 is the schematic perspective view of pushing block in Figure 35；

Figure 37 is the five of the schematic diagram of invention；

Figure 38 is the schematic perspective view of pushing block in Figure 37；

Figure 39 is the schematic perspective view of the pushing block and damping block in Figure 37；

Figure 40 is the pushing block schematic diagram isolated from Figure 39；

Figure 41 is the damping block schematic diagram separated from Figure 39；

Figure 42 is the six of the schematic diagram of invention, and the damping mechanism cavity in this figure has truncated cone wall；

Figure 43 is Figure 42 A-A to sectional view；

Figure 44 is the seven of the schematic diagram of invention, and the damping mechanism cavity in this figure has truncated cone wall；

Figure 45 is imaginary to be obliquely installed one of illustraton of model；

Figure 46 is imaginary to be obliquely installed the two of illustraton of model；

Figure 47 is imaginary to be obliquely installed the three of illustraton of model；

Figure 48 is the eight of the schematic diagram of invention, and the damping number of blocks in this figure has 3 to promote a point knot to be 3 in pushing block Structure；

Figure 49 is the nine of the schematic diagram of invention, and the damping number of blocks in this figure has 4 to promote a point knot to be 4 in pushing block Structure；

Figure 50 is the ten of the schematic diagram of invention；

Figure 51 is the damping block schematic perspective view in Figure 50；

Figure 52 is the pushing block schematic perspective view in Figure 50；

Figure 53 is a certain stretcher that inventive technique has been used in embodiment six；

Figure 54 is the damping block schematic perspective view in Figure 53, and this figure has only drawn a damping block；

Figure 55 is the pushing block end cap integral piece in Figure 53, and the integral piece expresses pushing block and end cap merges manufacture and is integrated；

Figure 56 is the schematic diagram after the stretcher molding assembly in Figure 53；

Figure 57 is the stretcher in embodiment eight, and the stretcher in figure removes end cap；

Figure 58 Figure 57 eliminates the schematic diagram of damping block；

Figure 59 is the damping block stereo amplification figure in Figure 57；

Figure 60 is the stereo amplification figure of rocking arm and pushing block in Figure 57；

Figure 61 is the stretcher schematic diagram in embodiment nine；

Figure 62 is the B-B direction sectional view in Figure 61；

Figure 63 is C-C in Figure 62 to sectional view；

Figure 64 is the stretcher schematic diagram in embodiment ten；

Figure 65 is D-D in Figure 64 to sectional view；

Figure 66 is that the E-E in Figure 65 is not drawn to the omission such as sectional view, the belt wheel of this figure bottom.

Label declaration in figure

1. damping mechanism cavity；1-20. damping mechanism cavity；1-21. damping mechanism cavity；1-22. damping mechanism cavity； 1-30. damping mechanism cavity；1-31. damping mechanism cavity；1-32. damping mechanism cavity；1-33. damping mechanism cavity；3. resistance Buddhist nun's block；3-1. damping block；3-2. damping block；3-4. damping block；3-4. damping block；3-5. damping block；3-6. damping block；3-7. resistance Buddhist nun's block；3-7. damping block；3-20. damping block；3-21. damping block；3-22. damping block；3-30. damping block；3-30a. damping block； 3-31. damping block；3-40. damping block；3-50. damping block；3-51. damping block；4. pushing block；4-1. pushing block；4-3. pushing block；4-4. Pushing block；4-5. pushing block；4-6. pushing block；4-7. pushing block；4-20. pushing block；4-21. pushing block；4-22. pushing block；4-30. pushing block；4-31. Pushing block；4-40. pushing block；4-50. pushing block；4-51. pushing block；6. high-damping promotes face；6-1. high-dampings promote face；6-3. high-damping Promotion face；6-3a. high-dampings promote face；6-4. high-dampings promote face；6-4a. high-dampings promote face；6-6. high-dampings promote face； 6-6a. high-dampings promote face；6-7. high-dampings promote face；6-7a. high-dampings promote face；7. low resistance promotes face；7-1. low-resistance Buddhist nun promotes face；7-3. low resistances promote face；7-3a. low resistances promote face；7-4. low resistances promote face；7-4a. low resistances promote Face；7-6. low resistances promote face；7-6a. low resistances promote face；7-7. low resistances promote face；7-7a. low resistances promote face；It is 8. high Damp resistance surface；8-1. high-damping resistance surfaces；8-4. high-damping resistance surfaces；8-3. high-damping resistance surfaces；8-3a. high-dampings contradict Face；8-4. high-damping resistance surfaces；9. low resistance resistance surface；9-1. low resistance resistance surfaces；9-3. low resistance resistance surfaces；It is 9-3a. low Damp resistance surface；9-4. low resistance resistance surfaces；20. avoid region；20a. avoids region；20-1. avoid region；20-1a. is avoided Region；45. rubbing surface；45-1. rubbing surfaces；45-3. rubbing surfaces；45-4. rubbing surfaces；45-7. rubbing surfaces；

103. damping block；103a. damping block；103-1. damping block；103-1a. damping block；103-2. damping block；103- 2a. damping blocks；103-3. damping block；103-3a. damping block；104-1. pushing block；104-2. pushing block；106. high-damping promotes face； 107. low resistance promotes face；108. high-damping resistance surface；108-1. high-damping resistance surfaces；109. low resistance resistance surface；109-1. Low resistance resistance surface；133. base；133-1. base；134. tension spring；134-2. tension spring；134-3. tension spring； 135. pad；136. rocking arm；136-1. rocking arm；136-2. rocking arm；138. pushing block end cap integral piece；139. bushing；140. center Axle；140-1. central shaft；140-2. central shaft；140-3. central shaft；141. bearing；141-1. bearing；142. belt wheel；142-2. Belt wheel；143. dust cap；144. screw；146. cavity wall；150. pushing block base integral pieces；160. pushing block rocking arm integral pieces；

D1. lower；D2. lower；D3. lower；D4. lower；G1. eminence；G2. eminence；G3. eminence；G4. eminence；YCX. Extended line；PXX. parallel lines；XZZXX. shaft center line；

P. active force；P ' active forces；P_fRadial component, also known as normal component of force；P′_fRadial component, also known as normal component of force； P_qTangential component；P′_qTangential component.

Special instruction：Figure 31, Figure 32, Figure 40, Figure 41, drawing in the four width figure has hatched region, these hatchings Region does not represent has made section view processing herein, but has borrowed the technique of painting of section oblique line, expresses pushing block and is being cutd open with damping block Region where upper thread offsets.

The present invention is described in further detail with reference to the accompanying drawings and detailed description.

Embodiment

The present invention has overall technological scheme one and overall technological scheme two, is described by separately below, description and interpretation.

The overall technological scheme one of the present invention is as follows：

A kind of damping unit for being used in stretcher, including：The damping mechanism cavity of pushing block, damping block, and circular wall；

The overall technological scheme one of the present invention describes as above；Below to some problem involved by overall technological scheme one Illustrate and explain.

First, the damping mechanism cavity of circular wall, its inside cavity are cylindrical hollow space, and its cavity wall is rounded.

2nd, the circular wall surface configuration of the rubbing surface of damping block and damping mechanism cavity is coincide, i.e., the rwo is bonded, or Say that the rwo has identical curvature；Namely say, the rubbing surface of damping block is also circular arc.

3rd, the circular wall surface of the rubbing surface of damping block and damping mechanism cavity, two faces have common axis of rotation Heart line.The circular cavity body wall of damping mechanism cavity, it has central axis；The rubbing surface of damping block is circular arc, the circular arc It necessarily correspond to a center of circle, pivot center when damping block rubbing surface rotates, by the center of circle.When damping block and damping mechanism chamber When relative rotation occurs for body, both have common axis of rotation heart line.

4th, occur with the circular wall surface of damping mechanism cavity relative around shaft center line, the rubbing surface of damping block Frictional rotation back and forth.

1. using the damping unit in stretcher, damping block and damping mechanism cavity happens is that friction turns back and forth It is dynamic, without continuous unlimited rotation in the direction of the clock occurs, continuous unlimited rotation counterclockwise will not also occur.

2. damping block and damping mechanism cavity happens is that relative rotation, a. can be considered as：Relative turn occurs for damping block Relative to not rotating, b. can also be considered as dynamic and damping mechanism cavity：Damping block relative to do not rotate and damping mechanism cavity occur Relatively rotate.The former a situation, it is to promote damping block to rotate by pushing block；The latter b situation, it is that damping block is headed on by pushing block, no Damping block is allowed to rotate.

5th, damping unit includes being obliquely installed.The purpose being obliquely installed is：Promote damping block rubbing surface and damping mechanism chamber The circular wall of body offsets；What is be obliquely installed has the technical effect that, applies a normal force to damping block all the time, is allowed in friction operation Face forms initial frictional.

Further labor is：When damping block and damping mechanism cavity relatively rotate or with rotation During trend, there is frictional force and frictional damping in both surfaces.Give damping block to apply a normal force, be the characteristics of the power： When damping block and damping mechanism cavity relatively rotate, the power is present；Phase does not occur in damping block and damping mechanism cavity When during to rotating, even without tendency is rotated, the power is also existing.

In order to get across, by being obliquely installed, promoting damping block rubbing surface and the circular wall of damping mechanism cavity to offset, Point General Principle aspect and concrete structure aspect illustrate below.

1. illustrated from General Principle aspect.

One of situation.See Figure 45, the figure is imaginary to be obliquely installed one of illustraton of model.Label declaration in figure：1-20 is Damping mechanism cavity；3-20 is damping block；4-20 is pushing block；The chain-dotted line in figure center represents shaft center line.It is as illustrated, false If：Pushing block and damping block contact, and contact position is obliquely installed relative to shaft center line.

Double-lined arrow represents the axial compressive force that pushing block applies to damping block.Axial compressive force can have a variety of methods to produce, than Such as a and b；A. damping block be elastomeric material manufacture, as nylon material manufacture, etc.；Damping block is by pushing block after assembling completion It is pressed down against deforming and caused axial compressive force effect；B., spring is set above pushing block, and spring is crushed and produced after assembling completion Raw axial compressive force.

The contact position of pushing block and damping block is is obliquely installed, after damping block is by axial compressive force, because oblique relation of plane, The component of radial direction can be produced, the radial component can promote damping block to oppress damping mechanism cavity, such as the single lined arrows in Figure 45.

The two of situation.See Figure 46, the figure is imaginary to be obliquely installed the two of illustraton of model；Label declaration in figure：1-21 is Damping mechanism cavity；3-21 is damping block；4-21 is pushing block.

Double-lined arrow represents the axial compressive force that pushing block applies to damping block.

In the left side of figure, the contact position of pushing block and damping block is is obliquely installed, after damping block is by axial compressive force, because Oblique relation of plane, the component of radial direction can be produced, the radial component can promote damping block to oppress damping mechanism cavity, such as Figure 46 to the left The single lined arrows in middle left side.On Figure 46 right side, although the contact position of pushing block and damping block is not obliquely installed, left side damping Block can produce reaction force when oppressing damping mechanism cavity, and the reaction force can promote damping block to oppress damping mechanism chamber to the right again Body, such as the single lined arrows of Figure 46 right parts.

The three of situation.See Figure 47, the figure is imaginary to be obliquely installed the three of illustraton of model；Label declaration in figure：1-22 is Damping mechanism cavity；3-22 is damping block；4-22 is pushing block.

The three of this situation and the two of situation, in the opposite direction, principle duplicates；Length relation, is repeated no more.

2. illustrated from concrete structure aspect.

With inventive technique scheme, the circular wall phase that can promote damping block rubbing surface and damping mechanism cavity is obliquely installed Support.The principle being obliquely installed, in many places of this patent document, it is included in embodiment one, makees also for specific structure More detailed introduction, description and interpretation

6th, distance of the high-damping resistance surface away from shaft center line is less than distance of the low resistance resistance surface away from shaft center line.

When damping block and damping mechanism cavity relatively rotate, damping block forms active force in the presence of pushing block.

Illustrated with reference to Fig. 1, Figure 23 and Figure 24.

Fig. 1 is one of schematic diagram of invention, and in this figure, damping number of blocks is 1, second group of working face and the 3rd in this figure Group working face is obliquely installed, and the cross hairs in figure is shaft center line；Figure 23 is one of mechanics analysis figure；Figure 24 is effect The two of power analysis chart.Label declaration in figure：1. damping mechanism cavity；3. damping block；3-2. damping block；4. pushing block；8. high resistant Buddhist nun's resistance surface；9. low resistance resistance surface；20. avoid region；20a. avoids region；P. active force；P ' active forces；P_fRadially divide Power, also known as normal component of force；P′_fRadial component, also known as normal component of force；P_qTangential component；P′_qTangential component.

Assuming that：1. damping block is motionless and damping mechanism cavity relatively rotates, during 2. loading, damping mechanism cavity occurs Rotationally clockwise, during 3. unloading, damping mechanism cavity rotates in an anti-clockwise direction.

Power is analyzed as follows.

1. the invention for Fig. 1, it is assumed that damping block 3-2 is motionless, and in loading, damping mechanism cavity 1 occurs clockwise Relatively rotate, its stressing conditions is referring to Figure 23.

Double-lined arrow in Figure 23 represents the rotation direction of damping mechanism cavity 1, and the cross hairs at " 0 " place represents pivot, The centre point that i.e. shaft center line is passed through.

During loading, the high-damping that active force is applied to damping block by the high-damping promotion face in pushing structure by pushing block is supported Contacting surface；Because distance of the high-damping resistance surface away from shaft center line is small, thus obtained in the normal direction of fricting working surface Component is big, so frictional damping is big.

2. for Fig. 1 invention device, it is assumed that damping block 3-2 is motionless, and unloading when, damping mechanism cavity 1 occur it is inverse Hour hands relatively rotate, and its stressing conditions is referring to Figure 24.

Single lined arrows in Figure 24 represent damping mechanism cavity rotation direction, and the cross hairs at " 0 " place represents pivot, i.e., The centre point that shaft center line is passed through.

During unloading, the low resistance that active force is applied to damping block by the low resistance promotion face in pushing structure by pushing block is supported Contacting surface；Because distance of the low resistance resistance surface away from shaft center line is big, thus obtained in the normal direction of fricting working surface Component is small, so frictional damping is small.

3. frictional damping is big during loading, frictional damping is small during unloading, thus has reached damping force and have asymmetrical purpose.

Asymmetric damping characteristics can be weighed with dissymmetryc coefficient, and dissymmetryc coefficient is defined as loading damping force with unloading Carry the ratio of damping force, for the symmetrical damping characteristic of prior art, dissymmetryc coefficient 1；The present invention can pass through tune The distance of whole high and low damping resistance surface and shaft center line, and adjustment damping block rubbing surface and damping mechanism cavity circular wall Coefficient of friction between surface, to adjust dissymmetryc coefficient, its value can reach more than 5.

The situation of more asymmetric damping characteristic, inventor have also made lot of experiments and prototype test, obtained it is obvious, Good technique effect.

4. in above description, its situation about assuming is：Damping block is motionless and damping mechanism cavity relatively rotates.If The situation of hypothesis changes into that damping block relatively rotates and damping mechanism cavity does not rotate, then occurs that identical, asymmetric damping is special The situation of property.

The type that seven, are obliquely installed.

Three types can be divided into by being obliquely installed.

1. what is individually carried out is obliquely installed, there are three kinds, they are respectively：Second group of working face is obliquely installed；3rd group of work It is obliquely installed as face；The 4th group of working face for offseting adjacent is obliquely installed.

2. what is carried out at two is obliquely installed simultaneously, there are three kinds, they are respectively：Second group of working face is obliquely installed, with And the 3rd group of working face is obliquely installed；Second group of working face is obliquely installed, and the 4th group of working face for offseting adjacent is tilted and set Put；3rd group of working face is obliquely installed, and the 4th group of working face for offseting adjacent is obliquely installed.

3. what is carried out at three is obliquely installed simultaneously, for one kind, it is：Second group of working face is obliquely installed, the 3rd group of work It is obliquely installed as face, and the 4th group of working face for offseting adjacent is obliquely installed.

Eight, are on the explanation of " the 4th group of working face " about situation.

The inner side of the damping block and described pushing block, the adjacent part of the rwo are named as the 4th group of working face.

The inner side of damping block and pushing block, the adjacent part of the rwo has following three kinds of situations, for being selected during specific design.

The gap of situation 1. is adjacent, i.e., gap between the inner side of damping block and pushing block be present, do not offset.Clearly for circle For the damping mechanism cavity of shape wall, this situation 1 can not promote damping block rubbing surface and the circular wall of damping mechanism cavity to offset. When there is situation 1, in order to promote the circular wall of damping block rubbing surface and damping mechanism cavity to offset, it is necessary at other groups Working face is obliquely installed.Other groups of working faces are obliquely installed, and refer to that at least one group of working face is obliquely installed.

Situation 2. is parallel offset it is adjacent, that is,：The inner side of damping block and pushing block offset, and offset place and rotation Axis parallel, it is not obliquely installed.

Situation 3. offsets adjacent and is obliquely installed.The technical measures of this situation can cause：Pushing block and damping block After axially offseting, further the circular wall of promotion damping block rubbing surface and damping mechanism cavity offsets.Situation 3 namely offsets The 4th group of adjacent working face is obliquely installed.The detailed schematic of situation 3 can make when reading the related content of many places below into One step understands.

On the basis of the 4th group of working face for offseting adjacent is obliquely installed, if be superimposed again it is following be obliquely installed, Effect is more preferable：

Second group of working face is obliquely installed, and either the 3rd group of working face is obliquely installed or second group of working face is tilted and set Put, the 3rd group of working face is obliquely installed.

The present invention overall technological scheme one describe, description and interpretation as above.The overall technological scheme two of the present invention illustrates Be explained as follows.

Overall technological scheme one is compared with overall technological scheme two, both have very big difference：General technical side The damping mechanism cavity of the truncated cone wall of case two, the damping mechanism cavity that instead of circular wall in overall technological scheme one.

Damping mechanism cavity in Figure 42 has truncated cone wall；Figure 43 is Figure 42 A-A to sectional view.Truncated cone Wall, in fact and one kind is obliquely installed.The purpose being obliquely installed is：Promote the circle of damping block rubbing surface and damping mechanism cavity Wall offsets；What is be obliquely installed has the technical effect that, applies a normal force to damping block all the time, is allowed to be formed just in fricting working surface Beginning frictional force；Further labor is：When damping block and damping mechanism cavity relatively rotate or with rotation During trend, there is frictional force and frictional damping in both surfaces.The normal force applied to damping block, it is the characteristics of the power：Hindering When Buddhist nun's block and damping mechanism cavity relatively rotate, the power is present；Do not occur in damping block and damping mechanism cavity relative When during rotation, even without tendency is rotated, the power is also existing.

Label declaration in Figure 42 and Figure 43：1-30 is the damping mechanism cavity of truncated cone wall；3-30 is damping block, 3- 30a is damping block；4-30 is pushing block, and it includes two promotion separation structures；Damping block and promotion separation structure are symmetrically distributed； The chain-dotted line in figure center represents shaft center line.

Double-lined arrow in Figure 43 represents the axial compressive force that pushing block applies to damping block.Axial compressive force can have a variety of methods Produce, such as following a and b：

A. damping block be elastomeric material manufacture, as nylon material manufacture, etc.；Damping block is pushed away after assembling completion Block crimp and caused axial compressive force effect.

B. the foreign side of pushing block sets spring, and spring is crushed and caused axial compressive force after assembling completion.Said with reference to Figure 43 It is bright as follows：

The spring of flattening is located at pushing block 4-30 right side (omitted in figure and be not drawn into spring)；Spring left end by limitation it is mobile or Person is fixed by position；Spring right-hand member, it offsets with pushing block 4-30 and applies a power to the right, pushing block to pushing block 4-30 all the time 4-30 is acted on by the power, is applied an axial compressive force to damping block again, as shown in the double-lined arrow in Figure 43, finally promotes damping The truncated cone wall of block rubbing surface and damping mechanism cavity offsets.

Continue to analyze：The contact position of damping mechanism cavity and damping block is tilts, after damping block is by axial compressive force, The component of radial direction can be produced in inclined plane, the component promotes damping block compressing damping mechanism cavity, such as two single lines in Figure 43 Arrow.

For the damping mechanism cavity with truncated cone wall, if the 6th group of working face, the 7th group of working face, with And the 8th group of working face is not obliquely installed, can also be realized：Pushing block and damping block axially offset after, further promote and damp The truncated cone wall of block rubbing surface and damping mechanism cavity offsets.

Certainly, for the damping mechanism cavity with truncated cone wall, if the 6th group of working face, the 7th group of work In face and the 8th group of working face, there is one group or two groups or three groups to be also obliquely installed, then damping block and truncated cone wall phase The active force supported is bigger, more preferable.

More than, overall technological scheme is described, description and interpretation；Below, to each further technical scheme It is described, description and interpretation.

Further technical scheme 1.

Technical scheme is described as follows.

Described damping block, quantity are more than or equal to 1；Damping block be two or more, then the promotion knot of pushing block Structure includes promoting separation structure；Promote the quantity of separation structure consistent with the quantity of damping block；Include in each promotion separation structure：It is high The promotion face of damping, and low resistance promote face；Each damping block includes：High-damping resistance surface, low resistance resistance surface, Yi Jiwei Rubbing surface in outside.

Related description and interpretation are as follows.

The damping block that inventive technique uses, quantity can be 1 or 2,3, or more, specifically adopt With several, need to be determined on a case-by-case basis or the tendency according to implementer or preference etc. and determine.

In Fig. 1, it is 1 that the quantity of damping block, which is,.In Figure 28, the quantity of damping block has 2 promotions to be 2 in pushing block Separation structure.

In Figure 48, the quantity of damping block has 3 promotion separation structures to be 3 in pushing block.In Figure 49, damping number of blocks is 4 Individual, the quantity for promoting separation structure is also 4.

In pushing structure (or promoting in separation structure), face and low resistance is promoted to promote face including high-damping；Each damping Block includes high-damping resistance surface, low resistance resistance surface and the rubbing surface positioned at outside.

Further technical scheme 2.

Technical scheme is described as follows.

Described damping block is in covering of the fan shape, and described fan-like pattern refers to the paper shape after paper folding fan expansion；The covering of the fan Shape includes small arc surface and the great circle cambered surface in outside and two sides of inner side；Two described sides, one side In regional area and the high-damping of pushing block promote that face is inconsistent, and this regional area is diametrically apart from shaft center line Closely；Two described sides, the low resistance of regional area and pushing block in its another side promotes face inconsistent, and this office Portion region is diametrically remote apart from shaft center line.

Related description and interpretation are as follows.

Illustrated with reference to Figure 28, Figure 29, Figure 30, Figure 31 and Figure 32.Label declaration in figure：1. damping mechanism cavity； 3-4. damping block；4-4. pushing block；6-4. high-dampings promote face；6-4a. high-dampings promote face；7-4. low resistances promote face；7-4a. Low resistance promotes face；8-4. high-damping resistance surfaces；9-4. low resistance resistance surfaces.Special instruction：Draw and cut open in Figure 31, Figure 32 Upper thread region, these hatched regions do not represent has made section view processing herein, but has borrowed the technique of painting of section oblique line, expression Pushing block offsets with damping block in the region where hatching.

Understood referring to Figure 28；In Figure 28, the quantity of damping block has 2 promotion separation structures to be 2 in pushing block. By taking the damping block on Figure 28 tops as an example, in left surface, the low resistance of damping block regional area and pushing block promotes face inconsistent, and This regional area is diametrically remote apart from shaft center line；In right flank, the high-damping of damping block regional area and pushing block pushes away Dynamic face is inconsistent, and this regional area is diametrically near apart from shaft center line.

Figure 28 and Figure 29, Figure 30, Figure 31, Figure 32 form one group of drawing.Figure 28 is the schematic diagram of invention；Figure 29 is in Figure 28 The schematic perspective view of pushing block；Figure 30 is the schematic perspective view of pushing block and damping block in Figure 28, and the dotted line on Figure 30 tops is damping block, The damping block of figure bottom is omitted and not drawn.

Figure 31 is the pushing block schematic diagram isolated from Figure 30.The pushing block low resistance of Figure 31 left parts promotes face, its hatching The low resistance resistance surface of region and damping block offsets.The pushing block high-damping of Figure 31 right parts promotes face, its hatched region and damping The high-damping resistance surface of block offsets.

Figure 32 is the damping block schematic diagram separated from Figure 30.The damping block low resistance resistance surface of Figure 32 left parts, its Hatched region promotes face to offset with pushing block low resistance.The damping block high-damping resistance surface of Figure 32 right parts, its hatched region with Pushing block high-damping promotes face to offset.

Further technical scheme 3.

Technical scheme is described as follows.

Described damping block, its outside is big circular arc, and its inner side is small circular arc, and its both sides is as follows；Described Both sides, its side are in two line segments, i.e.,：The straight line of radial direction outside, including oblique line；Foregoing two line, straight line are low resistance resistance surfaces, tiltedly Line, which is formed, avoids region；Described both sides, its opposite side are in two line segments, i.e.,：Oblique line outside, including the straight line of radial direction；Foregoing two Line, straight line are high-damping resistance surfaces, and oblique line, which is formed, avoids region.

Related description and interpretation are as follows.

Understood referring to Figure 28 and Figure 32.Label declaration in figure：1. damping mechanism cavity；3-4. damping block；4-4. Pushing block；6-4. high-dampings promote face；6-4a. high-dampings promote face；7-4. low resistances promote face；7-4a. low resistances promote face；8- 4. high-damping resistance surface；9-4. low resistance resistance surfaces.Special instruction：Being drawn in Figure 31, Figure 32 has hatched region, and these are cutd open Upper thread region does not represent has made section view processing herein, but has borrowed the technique of painting of section oblique line, expresses pushing block and damping block Offseted in the region where hatching.

Now by taking the damping block in Figure 28 and Figure 32 as an example.Damping block in Figure 32, its outside are big (on the upside of Figure 32) Circular arc, its inner side (Figure 32 on the downside of) is small circular arc.

The left side of damping block, straight line outside, including oblique line；Straight line is the edge line of low resistance resistance surface, and oblique line is formed and kept away Allow region.

The right side of damping block, oblique line outside, including the straight line of radial direction；Straight line is the edge line of high-damping resistance surface, oblique line Form and avoid region.

Region is avoided, its meaning is exactly discontiguous region.

Further technical scheme 4.

Technical scheme is described as follows.

Described damping block is in fan-like pattern, and described fan-like pattern refers to the paper shape after paper folding fan expansion, i.e., described in Damping block, its outside is great circle arc, and its inner side is roundlet arc, and its both sides is the straight line collapsed；Low resistance promotes face and height Damping resistance surface is the structural plane of projection；The side of damping block, it promotes face to be offseted in a manner of plane-plane contact with low resistance, and And the place that offsets is near and remote from inner side small arc-shaped far from outside orthodrome；The opposite side of damping block, it promotes face with face face with high-damping The way of contact offsets, and the place that offsets is remote and near from inner side small arc-shaped far from outside orthodrome.

Related description and interpretation are as follows.

Referring to Figure 50；In Figure 50, damping number of blocks is 2, and the quantity for promoting separation structure is also 2.In the promotion of pushing block In separation structure, low resistance promotes face and high-damping to promote the structural plane that face is projection.

Figure 51 is the damping block schematic perspective view in Figure 50；Figure 52 is the pushing block schematic perspective view in Figure 50.

See Figure 50, damping block and its high-damping resistance surface and low resistance resistance surface, promote separation structure and its low resistance to promote Face and high-damping resistance surface, foregoing projects although could be arranged to it is non-rotationally-symmetric, but inventor's recommended setting for rotation Symmetrically, Figure 50 is arranged to rotational symmetry.

See Figure 51, by taking the damping block for scheming top as an example, its two sides is the plane of rectangle, wherein, the plane of left part is Low resistance resistance surface, the plane of right part is high-damping resistance surface.

See Figure 52, by taking the promotion separation structure on top as an example, left side has a low resistance to promote face (marked as 7-51), right side There is a high-damping to promote face (marked as 6-51), they are the structural plane of projection.

The side of damping block is with promoting the low resistance of separation structure to promote face to be offseted in a manner of plane-plane contact；Damping block it is another Side is with promoting the high-damping of separation structure to promote face to be offseted in a manner of plane-plane contact；Foregoing " plane-plane contact ", it is that implication includes：1. it is Face contacts, rather than point contact, nor linear contact lay；2. the face contacted, can be a part of region in the face.

Embodiment one

The present embodiment one provides two groups of drawings, and first group of drawing is not obliquely installed, hindered as object of reference, comparison There is not the pressure to offset in the circular wall of Buddhist nun's block rubbing surface and damping mechanism cavity.Second group of drawing is made as invention drawing It is obliquely installed, the pressure to offset occurs in the circular wall of damping block rubbing surface and damping mechanism cavity.

First group of drawing is Figure 12 to Figure 22.Damping mechanism cavity, damping block and pushing block in Figure 12, incline without work Tiltedly set；Figure 13 is damping block and pushing block schematic diagram in Figure 12；Figure 14 is the damping block schematic diagram in Figure 12；Figure 15 is Figure 14 Rearview；Figure 16 is Figure 14 left view；Figure 17 is the pushing block schematic diagram in Figure 12；Figure 18 is Figure 17 rearview；Figure 19 It is Figure 17 left view；Figure 20 is Figure 17 right view；Figure 21 is the schematic perspective view of pushing block in Figure 12；Figure 22 is hindered in Figure 12 The schematic perspective view of Buddhist nun's block.Label declaration in figure：1 is damping mechanism cavity；3-1 is damping block；4-1 is pushing block；8-1 is high resistant Buddhist nun's resistance surface；9-1 is low resistance resistance surface；20-1 is to avoid region；20-1a is to avoid region；45-1 is rubbing surface.Above-mentioned figure 12 and each figure in, without being obliquely installed, so there is not phase in the circular wall of damping block rubbing surface and damping mechanism cavity The pressure supported.

Unlike above-mentioned Figure 12 to Figure 22, introduced below is to be obliquely installed, and causes damping block rubbing surface Occur offseting the situation of pressure with the circular wall of damping mechanism cavity.

Second group of drawing is Fig. 1 to Figure 11.Fig. 1 is one of schematic diagram of invention, and in this figure, damping number of blocks is 1, this Second group of working face and the 3rd group of working face are obliquely installed in figure, and the cross hairs in figure is shaft center line；Fig. 2 is in Fig. 1 Damping block and pushing block schematic diagram；Fig. 3 is the damping block schematic diagram in Fig. 1；Fig. 4 is Fig. 3 rearview；Fig. 5 is Fig. 3 left view Figure；Fig. 6 is the pushing block schematic diagram in Fig. 1；Fig. 7 is Fig. 6 rearview；Fig. 8 is Fig. 6 right view；Fig. 9 is Fig. 6 left view； Figure 10 is the schematic perspective view of pushing block in Fig. 1；Figure 11 is the schematic perspective view of damping block in Fig. 1.Label declaration in figure：1 is resistance Buddhist nun mechanism cavity；3 be damping block；4 be pushing block；6 be that high-damping promotes face；7 be that low resistance promotes face；8 be high-damping resistance surface； 9 be low resistance resistance surface；20 be to avoid region；20a is to avoid region；45 be rubbing surface.

High-damping resistance surface in damping block, the high-damping in pushing block promote face, and two faces offset, and name two faces For second group of working face；Second group of working face is obliquely installed relative to shaft center line.

Low resistance resistance surface in damping block, the low resistance in pushing block promote face, and two faces offset, and name this two faces For the 3rd group of working face；3rd group of working face is obliquely installed relative to shaft center line.

Due to being obliquely installed, the both ends open of damping block, one end is big and the other end is small.Due to being obliquely installed, the one of pushing block End is big and the other end is small.

The small end of pushing block is inserted in the big opening of damping block, and be inserted into bottom.Design and the objective result of manufacture, its typical case Situation is：Gradually go deep into as pushing block is inserted in damping block, the outside diameter of damping block becomes larger.The outside diameter of damping block Become big, promoted the circular wall of damping block rubbing surface and damping mechanism cavity to offset and continued to keep pressure.Foregoing " damping block Outside diameter become larger ", be due to second group of working face and the 3rd group of working face, they are both with respect to axis of rotation Line is the reason being obliquely installed.

Situation is obliquely installed for above-mentioned, is also illustrated further below.

1. second group of working face and the 3rd group of working face, they are obliquely installed relative to shaft center line, its last mesh Be：The circular wall of damping block rubbing surface and damping mechanism cavity is promoted to offset；In other words, in the product of assembling completion, begin Apply a normal force to damping block eventually, be allowed to form initial frictional in fricting working surface；Further labor It is：When damping block and damping mechanism cavity relatively rotate or when having rotation trend, there is friction in both surfaces Power and frictional damping.The characteristics of normal force is：When damping block and damping mechanism cavity relatively rotate, the power is deposited ；When damping block and damping mechanism cavity not relatively rotating, even without tendency is rotated, the power is also existing.

2. in described above, second group of working face and the 3rd group of working face are all obliquely installed；If second group of work Face tilts and the 3rd group of working face does not tilt, or, second group of working face does not tilt and the 3rd group of working face tilts, and also may be used To realize the technique effect of invention：The circular wall of damping block rubbing surface and damping mechanism cavity is promoted to offset.

3. in the industrial products of reality, damping mechanism cavity and pushing block use metal material manufacture, damping block bullet Property material manufacture.Keep pushing block to push damping block, damping block rubbing surface all the time has pressure with damping mechanism cavity circular wall all the time Offset, various technical measures can be taken.Such as：Technical measures a：After assembling completion, damping block, should by pushing block crimp Compressive deformation can produce pressure；Technical measures b：Spring is set above pushing block, and after assembling completion, spring is crushed and produces pressure Power, the pressure press to pushing block, and pushing block presses to damping block again.Technical measures b also has other benefit, when damping block length Between work after occur abrasion, then pushing block can further enter damping block so that damping block overall diameter holding it is constant Carefully so that the pressure that the circular wall of damping block rubbing surface and damping mechanism cavity offsets keeps constant.

Embodiment two

The present embodiment two provides two groups of drawings, and first group of drawing does not have to be obliquely installed.Second group of drawing, which has been made to tilt, to be set Put, the pressure to offset occurs in the circular wall of damping block rubbing surface and damping mechanism cavity.

First group of drawing is Figure 25, Figure 26 and Figure 27.Figure 25 is the two of the schematic diagram of invention；Figure 26 is pushing block in Figure 25 Schematic perspective view；Figure 27 is the schematic perspective view of damping block in Figure 25.Label declaration in Figure 25, Figure 26 and Figure 27：1 is damping Mechanism cavity；3-3 is damping block；4-3 is pushing block；6-3 is that high-damping promotes face；6-3a is that high-damping promotes face；7-3 is low-resistance Buddhist nun promotes face；7-3a is that low resistance promotes face；8-3 is high-damping resistance surface；8-3a is high-damping resistance surface；9-3 is low resistance Resistance surface；45-3 is rubbing surface.Although the parts in first group of drawing are not obliquely installed, but can be with other works The parts being obliquely installed with reference to and form invention, or repaiied to what the parts in first group of drawing were made to be obliquely installed Change, so as to the feature with invention.

Second group of drawing is Figure 28, Figure 29, Figure 30, Figure 31 and Figure 32.Figure 28 is the three of the schematic diagram of invention；Figure 29 is figure The schematic perspective view of pushing block in 28；Figure 30 is the schematic perspective view of pushing block and damping block in Figure 28, and the damping block on figure top is empty Line is expressed, and the damping block of figure bottom, which omits, not to be drawn；Figure 31 is the pushing block schematic diagram isolated from Figure 30, the section of this figure left part Line region is that the low resistance of pushing block promotes face, and the hatched region of this figure right part is the high-damping promotion face of pushing block；Figure 32 be from The damping block schematic diagram separated in Figure 30, the hatched region of this figure left part are the low resistance resistance surfaces of damping block, this figure The hatched region of right part is the high-damping resistance surface of damping block.

Label declaration in Figure 28, Figure 29, Figure 30, Figure 31 and Figure 32：1 is damping mechanism cavity；3-4 is damping block；4-4 It is pushing block；6-4 is that high-damping promotes face；6-4a is that high-damping promotes face；7-4 is that low resistance promotes face；7-4a is that low resistance pushes away Dynamic face；8-4 is high-damping resistance surface；9-4 is low resistance resistance surface；45-4 is rubbing surface.

In Figure 29, two high-dampings promote face and two low resistances promote face, and foregoing two kinds of promotion faces are to tilt Set.In fig. 30, the high-damping resistance surface and low resistance resistance surface in damping block, two kinds of resistance surfaces are also entirely that inclination is set Put, and resistance surface and the inclination cooperation for promoting face, under the premise of inclined, face and face have reached identical, cooperation and contact. Foregoing face, its intension can be whole faces or a part of face.

Design and the objective result of manufacture are：When the invention shown in second group of drawing, which is assembled, to be completed, due to being to tilt to set The relation put, pushing block pushes damping block, damping block rubbing surface all the time has offseting for pressure with damping mechanism cavity circular wall all the time.

Embodiment three

There are two groups of drawings in embodiment two, first group of drawing is Figure 25, Figure 26 and Figure 27, and second group of drawing is Figure 28, figure 29th, Figure 30, Figure 31 and Figure 32.Two groups of foregoing drawings, their active force situation, are illustrated in conjunction with Figure 33 and Figure 34.

Illustrated with reference to Figure 33 and Figure 34.Assuming that：1. damping block is motionless and damping mechanism cavity relatively rotates, and 2. During loading, damping mechanism cavity occur rotationally clockwise, 3. unloading when, damping mechanism cavity occur counterclockwise turn It is dynamic.

Power is analyzed as follows.

1. for Figure 25 or Figure 28, it is assumed that damping block is motionless；During loading, damping mechanism cavity occur clockwise it is relative Rotate, its stressing conditions is referring to Figure 33.

Double-lined arrow in Figure 33 represents the rotation direction of damping mechanism cavity 1, and the cross hairs at " 0 " place represents pivot, The centre point that i.e. shaft center line is passed through.

2. for Figure 25 or Figure 28, it is assumed that damping block is motionless, and in unloading, damping mechanism cavity occur it is counterclockwise Relatively rotate, its stressing conditions is referring to Figure 34.

Single lined arrows in Figure 34 represent damping mechanism cavity rotation direction, and the cross hairs at " 0 " place represents pivot, i.e., The centre point that shaft center line is passed through.

During unloading, active force is applied to the low resistance of damping block by the low resistance promotion face in pushing structure by pushing block Resistance surface；Because distance of the low resistance resistance surface away from shaft center line is big, thus obtained in the normal direction of fricting working surface Component it is small, so frictional damping is small.

4. in above description, its situation about assuming is：Damping block is motionless and damping mechanism cavity relatively rotates.If The situation of hypothesis changes into damping block relative rotation and damping mechanism cavity does not rotate, then the feelings of the asymmetric damping characteristics occurred Condition duplicates.

Example IV

Illustrated with reference to Figure 35 and Figure 36.Figure 35 is the four of the schematic diagram of invention；Figure 36 is the solid of pushing block in Figure 35 Schematic diagram.Label declaration in figure：1 is damping mechanism cavity；3-6 is damping block；4-6 is pushing block；6-6 is that high-damping promotes Face；6-6a is that high-damping promotes face；7-6 is that low resistance promotes face；7-6a is that low resistance promotes face.

In Figure 35, damping number of blocks is two, and the quantity for promoting separation structure is also two, and they are rotational symmetry Distribution.Referring to Figure 36, the center of pushing block is circular cone structure.

It coincide with pushing block, their shapes on the inside of damping block and has offseting for pressure, further explanation is：Each damping The inner side of block is in the hollow out (or claiming depression of semicircular platforms shape) of semicircular platforms shape, and circle is collectively formed on the inside of two damping blocks The hollow out of taper type, in assembling, the frustum of a cone in pushing block center promotes damping block, so that the rubbing surface of damping block props up resistance outwardly The inwall of Buddhist nun mechanism cavity；After the completion of assembling, pushing block on the inside of damping block with offseting, rubbing surface and the damping mechanism cavity of damping block Inwall offsets.

Embodiment five

Illustrated with reference to Figure 37, Figure 38, Figure 39, Figure 40 and Figure 41.Label declaration in figure：1 is damping mechanism cavity； 3- is damping block；4-7 is pushing block；6-7 is that high-damping promotes face；6-7a is that high-damping promotes face；7-7 is that low resistance promotes face； 7-7a is that low resistance promotes face；45-7 is rubbing surface.

Figure 38 and Figure 36 is different；Two high-dampings promotion face and two low resistances promotion faces in Figure 36, this four Promotion face is not tilt, and four promotion faces are arranged to tilt in Figure 38.

Figure 39 is the structural representation of the pushing block and damping block in Figure 37.In Figure 39, four of pushing block promote face to set To tilt；In Figure 39, the contact surface of damping block is also configured as tilting, and the damping block of Figure 39 bottoms, which omits, not to be drawn.

Figure 40 is the pushing block schematic diagram isolated from Figure 39；Figure 40 left parts have low resistance promote face, its hatched region with The low resistance resistance surface of damping block offsets；Figure 40 centers, towards the semicircular platforms shape hatched region of upper process, its with damping block Side offsets；Figure 40 right parts have high-damping to promote face, and the high-damping resistance surface of its hatched region and damping block offsets.

Figure 41 is the damping block schematic diagram separated from Figure 39；The damping block low resistance resistance surface of Figure 41 left parts, it is cutd open Upper thread region promotes face to offset with pushing block low resistance；The semicircular platforms shape hatched region that Figure 41 centers are recessed upward, it is with pushing away Block offsets；The damping block high-damping resistance surface of Figure 41 right parts, its hatched region promote face to offset with pushing block high-damping.

In brief, three hatched regions in three hatched regions and Figure 41 in Figure 40 offset, so as to be formed Three pairs of abutting relationships, every a pair of abutting relationships produce pressure and further produce radial component.

Figure to be seen to understand, after assembling completion, due to being obliquely installed, each damping block is promoted by the active force at three, Damping block is set to press to damping mechanism cavity outwardly, i.e.,：Pushing block offsets with damping block, and its axial compressive force generates radially on inclined-plane Component, the radial component promote damping block rubbing surface and the circular wall of damping mechanism cavity to offset from inside to outside.

Embodiment six

The present embodiment introduces a certain stretcher situation for having used inventive technique.

Referring to Figure 53, Figure 54, Figure 55 and Figure 56.Figure 53 is a certain stretcher for having used inventive technique, and this figure is to each zero Part has made resolution process or said to have made explosive treatment；Figure 54 is the damping block schematic perspective view in Figure 53, and this figure is only drawn One damping block；Figure 55 is the pushing block end cap integral piece in Figure 53, and the integral piece expresses pushing block and end cap merging is fabricated to one Body；Figure 56 is the schematic diagram after the stretcher molding assembly in Figure 53.Label declaration in figure：103. damping block；103a. damping Block；106. high-damping promotes face；107. low resistance promotes face；108. high-damping resistance surface；109. low resistance resistance surface；133. bottom Seat；134. tension spring；135. pad；136. rocking arm；138. pushing block end cap integral piece；139. bushing；140. central shaft；141. Bearing；141-1. bearing；142. belt wheel；143. dust cap；144. screw；146. cavity wall.

Damping block in the present embodiment is two；Promotion separation structure in pushing block is two.

In the present embodiment, there is following three to be obliquely installed：1. the high-damping in pushing structure promotes the height of face and damping block Damping resistance surface is offseted, and two faces are obliquely installed relative to shaft center line；2. low resistance in pushing structure promote face and The low resistance resistance surface of damping block is offseted, and two faces are obliquely installed relative to shaft center line；3. damping block inner side and pushing block Offset, and offset and be obliquely installed relative to shaft center line.In the case where pushing block and damping block axially offset, foregoing three It is individual to be obliquely installed, it can be very good to produce radial pressure；The radial pressure, promotion damping block rubbing surface and damping mechanism cavity Circular wall offsets.

See Figure 53, stretcher includes：138, two base 133, rocking arm 136, pushing block end cap integral piece damping blocks 103, with And other parts.

Rocking arm 136 has the damping mechanism cavity of a circular wall；Damping block has：High-damping resistance surface, low resistance are supported Contacting surface, and the rubbing surface positioned at outside；The circular wall surface configuration of the rubbing surface of damping block and the damping mechanism cavity is kissed Close, two faces have common axis of rotation heart line and two faces form fricting working surface.Friction on the outside of damping block (or when claiming to relatively rotate) forms frictional damping when relative motion occurs for the circular wall of face and damping mechanism cavity.

Contain two promotion separation structures in pushing block end cap integral piece 138；Each promotes in separation structure and is respectively provided with high-damping Promotion face 106 and low resistance promote face 107.

High-damping promotes the high-damping resistance surface 108 of face 106 and damping block to offset；Low resistance promotes face 107 and damping block Low resistance resistance surface 109 offset；Offseted on the inside of damping block with pushing block.

On being offseted on the inside of damping block with pushing block, its further instruction is：The inner side of each damping block is in half-conical The hollow out depression of semicircular platforms shape (or claim) of platform shape, the hollow out of truncated cone is collectively formed on the inside of two damping blocks.Dress In matching somebody with somebody, the frustum of a cone in pushing block center promotes damping block, so that the rubbing surface of damping block is propped up in damping mechanism cavity outwardly Wall；After the completion of assembling, with being offseted on the inside of damping block, rubbing surface and the damping mechanism cavity inner wall of damping block offset pushing block.

One end of central shaft 140 (is fixedly connected) with the interference fit joint of base 133；Belt wheel 142, dust cap 143, bearing 141st, screw 144 and rocking arm 136 fit together, and they make to come centered on central shaft 140 or return partial rotational, Separated between rocking arm 136 and central shaft 140 with bushing 139.Rocking arm 136 is separated with base 133 with pad 135.

The both ends of tension spring 134 are fixedly connected with rocking arm 136 and base 133 respectively.The function of tension spring 134 is made With including：When rocking arm 136 rotates along loading direction, tension spring 134 is loaded, and is opened when rocking arm 136 rotates along uninstall direction Power spring 134 provides moment of torsion.

Referring to Figure 54, damping block 103 is made up of elastomeric material, and material can use wear resistant nylon.Friction on the outside of damping block Face is arc surface, i.e. the circular wall surface configuration of the rubbing surface of damping block and damping mechanism cavity is coincide, and two faces have altogether Same shaft center line and two faces forms fricting working surfaces.

The body portion of central shaft is rotatablely connected with rocking arm end, and the other end and the pushing block end cap integral piece 138 of central shaft are fixed Connection.

Revolved in the circular wall damping mechanism cavity of rocking arm 136 around base 133 (namely around central shaft 140) along loading direction When turning (being clockwise direction, double-lined arrow direction of rotation in figure), the high-damping of pushing block end cap integral piece 138 is promoted towards high resistant Buddhist nun's resistance surface presses；Because distance of the position away from shaft center line of the pressure is near, so the normal direction formed in fricting working surface Component is big, so caused frictional damping is big.

Revolved in the circular wall damping mechanism cavity of rocking arm 136 around base 133 (namely around central shaft 140) along uninstall direction When turning (being counter clockwise direction, single lined arrows direction of rotation in figure), the low resistance of pushing block end cap integral piece 138 is promoted towards low-resistance Buddhist nun's resistance surface presses；Because distance of the position away from shaft center line of the pressure is remote, so the normal direction formed in fricting working surface Component is small, so caused frictional damping is small.

In summary, the stretcher of the present embodiment has asymmetrical damping；Stretcher along loading direction rotate when resistance Buddhist nun is big, stretcher along off-load direction rotate when damping it is small.

Embodiment seven

In embodiment six, pushing block and end cap merge manufacture and are integrated；In the present embodiment seven, this is changed, pushing block and End cap is separately manufacturing.After pushing block and end cap individually manufacture, pushing block is fixedly connected again with end cap.

In addition, one end of central shaft is fixedly connected with base, body portion and the rocking arm end of central shaft are rotatablely connected, central shaft The other end be fixedly connected with pushing block and end cap.

Embodiment eight

Referring to Figure 57, Figure 58, Figure 59, Figure 60.Figure 57 is the stretcher in the present embodiment, and the stretcher in figure removes end Lid；Figure 58 Figure 57 eliminates the schematic diagram of damping block；Figure 59 is the damping block stereo amplification figure in Figure 57；Figure 60 is pushed away in Figure 57 The stereo amplification figure of block and rocking arm.Label declaration in figure：103-1. damping block；103-1a. damping block；104-1. pushing block； 108-1. high-damping resistance surfaces；109-1. low resistance resistance surfaces；140-1. central shaft.

Stretcher in the present embodiment eight includes：Base, rocking arm, central shaft and other parts.

Damping mechanism cavity is arranged on rocking arm end；Pushing block is located in the bottom of damping mechanism cavity；Central shaft from it is lower to Upper situation about connecting respectively has：It is fixedly connected with base, is rotatablely connected with rocking arm end, is fixedly connected with pushing block.

When base and rocking arm relatively rotate, central shaft is not relatively rotated with base, and central shaft is sent out with rocking arm Raw to relatively rotate, central shaft does not relatively rotate with pushing block.

When base and rocking arm relatively rotate, pushing block also relatively rotates with rocking arm；In the presence of pushing block, enclose Around shaft center line, with the circular wall surface of damping mechanism cavity relative frictional rotation occurs for the rubbing surface of damping block.

High-damping in pushing block promotes the high-damping resistance surface of face and damping block to offset, their distances away from shaft center line It is small, thus damp big.Low resistance in pushing block promotes the low resistance resistance surface of face and damping block to offset, and they are away from shaft center line Distance it is big, thus damp it is small.

Embodiment nine

Stretcher in the present embodiment, referring to Figure 61, Figure 62 and Figure 63.

Figure 61 is the stretcher schematic diagram in the present embodiment nine；Figure 62 is the B-B direction sectional view in Figure 61；Figure 63 is Figure 62 In C-C to sectional view.Label declaration in figure：1-32. damping mechanism cavity；103-2. damping block；103-2a. damping block； 104-2. pushing block；134-2. tension spring；136-2. rocking arm；140-2. central shaft；142-2. belt wheel；150. pushing block bases one Part；D1. lower；D2. lower；G1. eminence；G2. eminence；YCX. extended line；PXX. parallel lines；XZZXX. shaft center line.

Stretcher includes base, rocking arm 136-2 and central shaft 140-2.Damping mechanism cavity 1-32 is arranged on rocking arm 136-2 In.Pushing block and base, which merge, is fabricated to pushing block base integral piece, marked as 150；In other words, the base in the present embodiment with it is many not Together, pushing block structure is additionally arranged in base, and pushing block and base manufacture are integrated.One end of central shaft rotates with rocking arm to be connected Connect, the other end of central shaft is fixedly connected with pushing block base integral piece.

Further technical Analysis 1.

See Figure 62.Parallel lines in figure marked as PXX, it is parallel to shaft center line XZZXX；Damping in the present embodiment Mechanism cavity, there is truncated cone wall；The surface of the truncated cone wall adds picture extended line YCX on Figure 62 section.Observation Parallel lines PXX and extended line YCX understands that the truncated cone wall of damping mechanism cavity is left small and right large.

From Figure 43 of mistake presented hereinbefore it is recognised that foregoing truncated cone wall construction coordinates specific damping block again, can push away Dynamic damping block oppresses damping mechanism cavity；So-called specific damping block refers to：Rubbing surface coincide with truncated cone wall surface shape Damping block；The contact position of damping mechanism cavity and damping block is tilts, after damping block is by axial compressive force, in inclined plane The component of radial direction can be produced, the component promotes damping block compressing damping mechanism cavity, such as two single lined arrows in Figure 43.

Further technical Analysis 2.

See Figure 63.Small cross hairs in figure represents the point that shaft center line passes through；D1 in Figure 63 is lower, and D2 is low Place, G1 is eminence, and G2 is eminence；It is at contact promotion of the damping block with pushing block at foregoing 4.

Two lowers (D1, D2) in Figure 63, its distance away from shaft center line is big, and caused frictional damping is small.Figure Two eminences (G1, G2) in 63, its distance away from shaft center line is small, and caused frictional damping is big.

Embodiment ten

Stretcher in the present embodiment, referring to Figure 64, Figure 65 and Figure 66.Figure 64 is the stretcher signal in the present embodiment ten Figure；Figure 65 is D-D in Figure 64 to sectional view；Figure 66 be E-E in Figure 65 to the omission such as sectional view, the belt wheel of this figure bottom not Draw.Label declaration in figure：1-33. damping mechanism cavity；103-3. damping block；103-3a. damping block；133-1. base； 134-3. tension spring；140-3. central shaft；142-2. belt wheel；160. pushing block rocking arm integral pieces；D3. lower；D4. lower；G3. Eminence；G4. eminence.

In the present embodiment, damping mechanism cavity 1-33 is arranged in base 133-1.Pushing block and rocking arm, which merge to be fabricated to, to be pushed away Block rocking arm integral piece 160.Central shaft 140-3 one end is fixedly connected with pushing block rocking arm integral piece 160, and central shaft 140-3's is another One end is rotatablely connected with base 133-1.

Further technical Analysis 1.

The damping mechanism cavity 1-33 being arranged in base 133-1, its cavity wall can be designed to circular wall, can also set Count into truncated cone wall.

If cavity wall is manufactured into truncated cone wall, it coordinates with specific damping block again, and (related description is shown in embodiment Nine)；After damping block is by axial compressive force, the component of radial direction can be produced on truncated cone wall, the component promotes damping block Damping mechanism cavity is oppressed, such as two single lined arrows in Figure 43.

Further technical Analysis 2.

If cavity wall is made round wall, special technical measures can be taken to promote damping block compressing damping mechanism Cavity；Special technical measures, it is to carry out being obliquely installed for shaft center line.Specifically be obliquely installed, be with Descend any one in seven：

A. second group of working face is obliquely installed；B. the 3rd group of working face is obliquely installed；C. the 4th group of work for offseting adjacent Face is obliquely installed；D. second group of working face is obliquely installed, and the 3rd group of working face is obliquely installed；E. second group of working face tilts Set, and the 4th group of working face for offseting adjacent is obliquely installed；F. the 3rd group of working face is obliquely installed, and is offseted adjacent 4th group of working face is obliquely installed；G. second group of working face is obliquely installed, and the 3rd group of working face is obliquely installed, and is offseted adjacent The 4th group of working face be obliquely installed.

After taking any of the above described one kind to be obliquely installed, when pushing block axially offsets with damping block, its caused technique effect It is：The circular wall of damping block rubbing surface and damping mechanism cavity is promoted to offset in radial directions.

Further technical Analysis 3.

If in the case of truncated cone wall, then add it is for shaft center line, duplicate in case above Be obliquely installed, then the power that the wall surface of damping block rubbing surface and damping mechanism cavity offsets is bigger；Herein " power to offset is more Greatly ", it is for the situation that simple truncated cone wall and specific damping block coordinate.

Further technical Analysis 4.

The chain-dotted line of Figure 65 upper levels is shaft center line.Small cross hairs in Figure 66 represents what shaft center line passed through Point.D3 is lower, and D4 is lower, and G3 is eminence, and G4 is eminence；It is at contact promotion of the damping block with pushing block at foregoing 4.

Two lowers (D3, D4) in Figure 66, its distance away from shaft center line is big, and caused frictional damping is small.Figure Two eminences (G3, G4) in 66, its distance away from shaft center line is small, and caused frictional damping is big.

Claims

1. a kind of damping unit for being used in stretcher, it is characterized in that：

Including：The damping mechanism cavity of pushing block, damping block, and circular wall；

The circular wall surface configuration of the rubbing surface of damping block and the damping mechanism cavity is coincide, and two faces are named as first group Working face, two faces have common axis of rotation heart line and two faces form fricting working surface；

Around shaft center line, with the circular wall surface of damping mechanism cavity relative friction back and forth occurs for the rubbing surface of damping block Rotate；

High-damping in pushing structure promotes the high-damping resistance surface of face and damping block to offset, and two faces are named as second group of work Make face；

Low resistance in pushing structure promotes the low resistance resistance surface of face and damping block to offset, and two faces are named as the 3rd group of work Make face；

The inner side of the damping block and described pushing block, the adjacent part of the rwo are named as the 4th group of working face；Described phase Neighbour be offset it is adjacent or described it is adjacent be that gap is adjacent；

Described damping unit includes being obliquely installed；Described inclination, it is for shaft center line；Described inclination is set Put, it is any one in following seven：

A. second group of working face is obliquely installed；B. the 3rd group of working face is obliquely installed；C. the 4th group of working face for offseting adjacent inclines Tiltedly set；D. second group of working face is obliquely installed, and the 3rd group of working face is obliquely installed；E. second group of working face, which tilts, sets Put, and the 4th group of working face for offseting adjacent is obliquely installed；F. the 3rd group of working face is obliquely installed, and adjacent that offset Four groups of working faces are obliquely installed；G. second group of working face is obliquely installed, and the 3rd group of working face is obliquely installed, and is offseted adjacent 4th group of working face is obliquely installed；

Described pushing block and described damping block axially offset and promoted the circular wall of damping block rubbing surface and damping mechanism cavity Offset.

2. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described damping block, quantity are more than or equal to 1；

Damping block be two or more, then the pushing structure of pushing block include promote separation structure；Promote separation structure quantity and The quantity of damping block is consistent；Include in each promotion separation structure：High-damping promotes face, and low resistance to promote face；Each resistance Buddhist nun's block includes：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside.

3. according to a kind of damping unit for being used in stretcher of claim 1, it is characterized in that：

Described damping block is in covering of the fan shape, and described fan-like pattern refers to the paper shape after paper folding fan expansion；The covering of the fan shape The great circle cambered surface of small arc surface and outside including inner side and two sides；Two described sides, in one side The high-damping of regional area and pushing block promotes face inconsistent, and this regional area is diametrically near apart from shaft center line； Two described sides, the low resistance of regional area and pushing block in its another side promotes face inconsistent, and this part Region is diametrically remote apart from shaft center line.

4. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described damping block, its outside is big circular arc, and its inner side is small circular arc, and its both sides is as follows；

Described both sides, its side are in two line segments, i.e.,：The straight line of radial direction outside, including oblique line；Foregoing two line, straight line are low-resistances Buddhist nun's resistance surface, oblique line, which is formed, avoids region；

Described both sides, its opposite side are in two line segments, i.e.,：Oblique line outside, including the straight line of radial direction；Foregoing two line, straight line are high Resistance surface is damped, oblique line, which is formed, avoids region.

5. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described damping block is in fan-like pattern, and described fan-like pattern refers to the paper shape after paper folding fan expansion, i.e. described damping Block, its outside is great circle arc, and its inner side is roundlet arc, and its both sides is the straight line collapsed；

The side of damping block, it promotes face to be offseted in a manner of plane-plane contact with low resistance, and the place that offsets is near far from outside orthodrome It is and remote from inner side small arc-shaped；The opposite side of damping block, it promotes face to be offseted in a manner of plane-plane contact with high-damping, and the place that offsets It is remote and near from inner side small arc-shaped from outside orthodrome.

6. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft；The end of the rocking arm is provided with end cap；

Described damping mechanism cavity is arranged on rocking arm end；Described central shaft, its one end are fixedly connected with base, its body portion It is rotatablely connected with rocking arm end, its other end is fixedly connected with pushing block and end cap；

Described pushing block and described end cap merge manufacture and are integrated, or described pushing block and described end cap separately manufacturing.

7. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft；

Described damping mechanism cavity is arranged in rocking arm, described pushing block and described base, and the rwo merging is fabricated to one Body, or the rwo separately manufacturing；Described central shaft, its one end are rotatablely connected with rocking arm, its other end and pushing block and base It is fixedly connected.

8. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft；

Described damping mechanism cavity is set in the base；Described pushing block and described rocking arm, the rwo merging are fabricated to one Body, or the rwo separately manufacturing；Described central shaft, its one end are fixedly connected with rocking arm and pushing block, its other end and base Rotation connection.

9. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft.

10. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described damping unit includes central shaft；Central shaft, it is fixedly connected with pushing block, and it is rotated with damping mechanism cavity connects Connect.

11. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described damping unit includes central shaft；Central shaft, it is rotatablely connected with pushing block, and it is fixed with damping mechanism cavity connects Connect.

12. a kind of damping unit for being used in stretcher according to claim 1, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft；Described damping mechanism cavity is arranged on rocking arm end；Described Pushing block is located in the bottom of damping mechanism cavity；Described central shaft, its situation about connecting respectively from top to bottom have：Consolidate with base Fixed connection, is rotatablely connected with rocking arm end, is fixedly connected with pushing block.

13. a kind of damping device for being used in stretcher, it is characterized in that：

Including：The damping mechanism cavity of pushing block, damping block, and truncated cone wall；

Described damping block includes：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside；Damping block The truncated cone wall surface shape of rubbing surface and the damping mechanism cavity is coincide, and two faces are named as the 5th group of working face, Two faces have common axis of rotation heart line and two faces form fricting working surface；

Around shaft center line, the rubbing surface of damping block and the truncated cone wall surface generation of damping mechanism cavity are relative back and forth Frictional rotation；

High-damping in pushing structure promotes the high-damping resistance surface of face and damping block to offset, and two faces are named as the 6th group of work Make face；

Low resistance in pushing structure promotes the low resistance resistance surface of face and damping block to offset, and two faces are named as the 7th group of work Make face；

Described pushing block and described damping block axially offset and promoted the frustum of a cone of damping block rubbing surface and damping mechanism cavity Shape wall offsets.

14. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

The inner side of the damping block and described pushing block, the adjacent part of the rwo are named as the 8th group of working face；Described phase Neighbour be offset it is adjacent or described it is adjacent be that gap is adjacent；

Described damping device includes being obliquely installed；Described inclination, it is for shaft center line；Described inclination is set Put, it is any one in following seven：

A. the 6th group of working face is obliquely installed；B. the 7th group of working face is obliquely installed；C. the 8th group of working face for offseting adjacent inclines Tiltedly set；D. the 6th group of working face is obliquely installed, and the 7th group of working face is obliquely installed；E. the 6th group of working face, which tilts, sets Put, and the 8th group of working face for offseting adjacent is obliquely installed；F. the 7th group of working face is obliquely installed, and adjacent that offset Eight groups of working faces are obliquely installed；G. the 6th group of working face is obliquely installed, and the 7th group of working face is obliquely installed, and the place that offseted in resistance It is obliquely installed.

15. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

Described damping block, quantity are more than or equal to 1；

Damping block be two or more, then the pushing structure of pushing block include promote separation structure；Promote separation structure quantity and The quantity of damping block is consistent；Including high-damping in each promotion separation structure promotes face and low resistance to promote face；Each damping block Include：High-damping resistance surface, low resistance resistance surface, and the rubbing surface positioned at outside.

16. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

17. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

18. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

19. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

20. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft；

21. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft；

22. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

Described stretcher includes base, rocking arm and central shaft.

23. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

Described damping device includes central shaft；Central shaft, it is fixedly connected with pushing block, and it is rotated with damping mechanism cavity connects Connect.

24. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：

Described damping device includes central shaft；Central shaft, it is rotatablely connected with pushing block, and it is fixed with damping mechanism cavity connects Connect.

25. a kind of damping device for being used in stretcher according to claim 13, it is characterized in that：