CN104129744B - Cam mechanism used for lifting object - Google Patents
Cam mechanism used for lifting object Download PDFInfo
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- CN104129744B CN104129744B CN201410375617.1A CN201410375617A CN104129744B CN 104129744 B CN104129744 B CN 104129744B CN 201410375617 A CN201410375617 A CN 201410375617A CN 104129744 B CN104129744 B CN 104129744B
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- cam
- stop pin
- lifting
- locking position
- recess
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Abstract
The invention provides a cam mechanism used for lifting an object (2). The cam mechanism comprises a cam (4), a driving rotation shaft (42) and a locking pin (5). The driving rotation shaft (42) is used for driving the cam (4) to rotate, the cam (4) is in the shape of an ellipse on the whole, the ellipse is provided with a short axis (x) and a long axis (y), and a vertex of the long axis (y) of the ellipse is a lifting position bearing area (8) which is used for bearing the object at the lifting position of the object. A lifting position locking notch (41) is formed in the position of the other vertex of the long axis (y) of the ellipse, the lifting position locking notch is matched with a head (51) of the locking pin at the lifting position, and therefore position locking is conducted. The locking pin is arranged in a vertical hole in the vertical direction, the tail end of the locking pin is connected with an elastic element (52), and therefore the locking pin is allowed to conduct expansion and retraction movement in the vertical hole in the vertical direction.
Description
Technical field
The present invention relates to cam, be specially a kind of cam mechanism for lifting object.
Background technology
Cam mechanism is by cam, the higher pair mechanism of driven member and frame three basic building block compositions.Cam is a component with curved profile or groove, is generally driving link, makes constant speed gyroscopic movement or linear reciprocating motion.Contact with camb contour, and transferring power and the component realizing the predetermined characteristics of motion, generally do linear reciprocating motion or swing, be called driven member.
Cam mechanism basic characteristics are in the application to make driven member obtain the more complicated characteristics of motion.Because the characteristics of motion of driven member depends on cam profile curve, so when applying, as long as the profilograph designing cam according to the characteristics of motion of driven member is just passable.Cam mechanism is widely used in various automation, instrument and maneuver control device.Why cam mechanism obtains so is applied widely, and mainly because cam mechanism can realize the movement needs of various complexity, and structure is simple, compact.
The motion process of cam needs to lock in different positions; And locking and unblock need actuating unit, which increase equipment cost and power cost; And, can not lock immediately in case of need and allow to unlock expediently simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of cam mechanism for lifting object, it can perform the lifting of object, simultaneously, can automatically lock when putting in place, and successfully can jump out from lock-out state, and can automatically lock in next position, and also can jump out smoothly, and structure is simple, reliable, Stability Analysis of Structures.
According to the present invention, a kind of cam mechanism for lifting object, described cam mechanism comprises cam, drive shaft and stop pin, wherein, drive shaft is used for power cam and rotates, and the overall shape of described cam is oval shape, and described ellipse has minor axis x and major axis y, described ellipse is lifting position carry district at the summit place of major axis y, for the lifting position carry object at object; Described ellipse is provided with lifting locking position recess at another summit place of major axis y, and lifting locking position recess at the head fits of described lifting position and described stop pin, thus carries out locking position; Described stop pin is arranged in the vertical holes of vertical direction, and tail end is connected with elastic element, thus allows described stop pin in the vertical direction fore and aft motion in described vertical holes.
When in described lifting position, major axis y is vertical direction, minor axis x is horizontal direction, the circle central axis of described drive shaft is positioned at the downside of minor axis x, and separate the first offset or dish Ey with minor axis x, the circle central axis of described drive shaft is also positioned at the left side of major axis y, and separates the second offset or dish Ex with major axis y.
The shape of described lifting locking position recess is acute angle shape recess, and when in described lifting position, the right flank of the acute angle shape recess of described lifting locking position recess is vertical direction, and left surface and right flank intersect acute angle.
The head of described stop pin is the shape of convex polygon, be provided with adjacently successively: left side vertical face, inclined-plane, left side, top levels, inclined-plane, right side and right vertical face, the angle of inclined-plane, described left side and vertical direction is greater than the angle of inclined-plane, right side and vertical direction.
When in described lifting position, under the top pressure effect of described elastic element, the inclined-plane, left side of the head of described stop pin coordinates with the left surface of described lifting locking position recess, the right vertical face of the head of described stop pin coordinates with the right flank of described lifting locking position recess, now, described stop pin can carry out locking prevention to rotating clockwise of described cam, and when described cam starts to rotate counterclockwise, inclined-plane, described left side coordinates stop pin can be pressed down with the inclined-plane of the left surface of described lifting locking position recess, thus allow described cam to rotate counterclockwise.
The described ellipse of described cam is also provided with and falls position carry district after rise and fall locking position recess after rise, when cam is in described lifting position, described falling position carry district is positioned at summit, the right side place of minor axis x, described falling locking position recess is positioned at the leftmost vertices place of minor axis x, falling locking position recess after rise is also acute angle shape, and now, the locking face of falling locking position recess is upper side and is horizontal direction, and downside is drive surface and intersects acute angle with locking face;
When described cam rotates counterclockwise from described lifting position, described stop pin presses down and is pressed down, the position moving contact between two described recesses of described top levels and described cam, when described cam turns over 90 degree, thus make the head falling locking position recess and described stop pin after rise on time, under the top pressure effect of described elastic element, the inclined-plane, right side of the head of described stop pin coordinates with the drive surface falling locking position recess after rise, the left side vertical face of the head of described stop pin coordinates with the locking face of falling locking position recess after rise, now, described stop pin can carry out locking prevention to rotating counterclockwise of described cam, and when described cam starts to rotate clockwise, inclined-plane, described right side coordinates stop pin can be pressed down with the inclined-plane of the drive surface falling locking position recess after rise, thus allow described cam to rotate clockwise.
Pass through such scheme, due to each section of profile by devising stop pin head, being matched with the fitting surface of notch by vertical locking face, can realize locating locking, and coordinated with the respective ramp of notch by the inclined-plane of described head, lock position can be jumped out; And, turning cylinder has bidirectional eccentric, it can realize having own biased moment under stopping lock-out state, this own biased moment can form stabilized conditions with aforesaid locking face with coordinating of fitting surface, make stabilized structure, the object of carried can not shake and fugitiveness.The architectural feature that whole scheme uses is compact, and cost reduces, and reliable.
Accompanying drawing explanation
Fig. 1 is the diagram of cam mechanism of the present invention when raised position;
Fig. 2 is the diagram of cam mechanism of the present invention when dipping;
Fig. 3 is the diagram of the position of the turning cylinder of cam mechanism of the present invention;
Fig. 4 is the schematic diagram of each section of the profile of stop pin.
Detailed description of the invention
Now in conjunction with Figure of description 1-4, the present invention is described in detail.
A kind of cam mechanism for lifting object 2, described cam mechanism comprises cam 4, drive shaft 42 and stop pin 5, wherein, drive shaft 42 is rotated for power cam 4, the overall shape of described cam 4 is oval shape, described ellipse has minor axis x and major axis y, and described ellipse is lifting position carry district 8 at the summit place of major axis y, for the lifting position carry object 2 at object 2; Described ellipse is provided with lifting locking position recess 41 at another summit place of major axis y, and the head 51 of lifting locking position recess 41 in described lifting position with described stop pin 5 coordinates, thus carries out locking position; Described stop pin 5 is arranged in the vertical holes of vertical direction, and tail end is connected with elastic element 52, thus allows described stop pin 5 in the vertical direction fore and aft motion in described vertical holes.
When in described lifting position, major axis y is vertical direction, minor axis x is horizontal direction, the circle central axis of described drive shaft 42 is positioned at the downside of minor axis x, and separate the first offset or dish Ey with minor axis x, the circle central axis of described drive shaft 42 is also positioned at the left side of major axis y, and separates the second offset or dish Ex with major axis y.
The shape of described lifting locking position recess 41 is acute angle shape recess, and when in described lifting position, the right flank 411 of the acute angle shape recess of described lifting locking position recess 41 is vertical direction, and left surface 412 and right flank intersect acute angle.
The head 51 of described stop pin 5 is the shape of convex polygon, be provided with adjacently successively: left side vertical face 515, inclined-plane, left side 512, top levels 514, inclined-plane, right side 513 and right vertical face 511, inclined-plane, described left side 512 and the angle of vertical direction are greater than the angle of inclined-plane, right side 513 and vertical direction.
When in described lifting position, under the top pressure effect of described elastic element 52, the inclined-plane, left side 512 of the head 51 of described stop pin 5 coordinates with the left surface 412 of described lifting locking position recess 41, the right vertical face 511 of the head 51 of described stop pin 5 coordinates with the right flank 411 of described lifting locking position recess 41, now, described stop pin 5 can carry out locking prevention to rotating clockwise of described cam 4, and when described cam 4 starts to rotate counterclockwise, inclined-plane, described left side 512 coordinates stop pin 5 can be pressed down with the inclined-plane of the left surface 412 of described lifting locking position recess 41, thus allow described cam 4 to rotate counterclockwise.
The described ellipse of described cam 4 is also provided with and falls position carry district 9 after rise and fall locking position recess 43 after rise, when cam 4 is in described lifting position, described falling position carry district 9 is positioned at summit, the right side place of minor axis x, described falling locking position recess 43 is positioned at the leftmost vertices place of minor axis x, falling locking position recess 43 after rise is also acute angle shape, and now, the locking face 431 of falling locking position recess 43 is upper side and is horizontal direction, and downside 432 is drive surface and intersects acute angle with locking face 431.
When described cam 4 rotates counterclockwise from described lifting position, described stop pin 5 presses down and is pressed down, the position moving contact between two described recesses of described top levels 514 and described cam 4, when described cam 4 turns over 90 degree, thus make the head 51 falling locking position recess 43 and described stop pin 5 after rise on time, under the top pressure effect of described elastic element 52, the inclined-plane, right side 513 of the head 51 of described stop pin 5 coordinates with the drive surface 432 falling locking position recess 43 after rise, the left side vertical face 515 of the head 51 of described stop pin 5 coordinates with the locking face 431 of falling locking position recess 43 after rise, now, described stop pin 5 can carry out locking prevention to rotating counterclockwise of described cam 4, and when described cam 4 starts to rotate clockwise, inclined-plane, described right side 513 coordinates stop pin 5 can be pressed down with the inclined-plane of the drive surface 432 falling locking position recess 43 after rise, thus allow described cam 4 to rotate clockwise.
Above embodiment is just for explanatory information of the present invention, and the scope of not intended to be limiting the claims in the present invention.
Claims (2)
1. the cam mechanism for lifting object (2), described cam mechanism comprises cam (4), drive shaft (42) and stop pin (5), wherein, drive shaft (42) is rotated for power cam (4), the overall shape of described cam (4) is oval shape, described ellipse have minor axis (x) with major axis (y), described ellipse is lifting position carry district (8) at the summit place of major axis (y), for the lifting position carry object (2) at object (2); Described ellipse is provided with lifting locking position recess (41) at another summit place of major axis (y), and lifting locking position recess (41) coordinates with the head (51) of described stop pin (5) in described lifting position, thus carries out locking position; Described stop pin (5) is arranged in the vertical holes of vertical direction, and tail end is connected with elastic element (52), thus allows described stop pin (5) in the vertical direction fore and aft motion in described vertical holes;
When in described lifting position, major axis (y) is vertical direction, minor axis is (x) horizontal direction, the circle central axis of described drive shaft (42) is positioned at minor axis downside (x), and (x) separate the first offset or dish (Ey) with minor axis, the circle central axis of described drive shaft (42) is also positioned at the left side of major axis (y), and separates the second offset or dish (Ex) with major axis (y);
The shape of described lifting locking position recess (41) is acute angle shape recess, when in described lifting position, the right flank (411) of the acute angle shape recess of described lifting locking position recess (41) is vertical direction, and left surface (412) and right flank intersect acute angle;
The shape that the head (51) of described stop pin (5) is convex polygon, be provided with adjacently successively: left side vertical face (515), inclined-plane, left side (512), top levels (514), inclined-plane, right side (513) and right vertical face (511), inclined-plane, described left side (512) is greater than the angle of inclined-plane, right side (513) and vertical direction with the angle of vertical direction;
When in described lifting position, under the top pressure effect of described elastic element (52), the inclined-plane, left side (512) of the head (51) of described stop pin (5) coordinates with the left surface (412) of described lifting locking position recess (41), the right vertical face (511) of the head (51) of described stop pin (5) coordinates with the right flank (411) of described lifting locking position recess (41), now, described stop pin (5) can carry out locking prevention to rotating clockwise of described cam (4), and when described cam (4) starts to rotate counterclockwise, inclined-plane, described left side (512) coordinates stop pin (5) can be pressed down with the inclined-plane of the left surface (412) of described lifting locking position recess (41), thus allow described cam (4) to rotate counterclockwise.
2. mechanism as claimed in claim 1, wherein, the described ellipse of described cam (4) is also provided with and falls position carry district (9) after rise and fall locking position recess (43) after rise, when cam (4) is in described lifting position, described falling position carry district (9) is positioned at minor axis summit, right side place (x), described falling locking position recess (43) is positioned at minor axis leftmost vertices place (x), falling locking position recess (43) after rise is also acute angle shape, and now, fall the locking face (431) of locking position recess (43) after rise for upper side and be horizontal direction, downside (432) is for drive surface and intersect acute angle with locking face (431),
When described cam (4) rotates counterclockwise from described lifting position, described stop pin (5) presses down and is pressed down, described top levels (514) and the position moving contact of described cam (4) between two described recesses, when described cam (4) turns over 90 degree, thus make the head (51) falling locking position recess (43) and described stop pin (5) after rise on time, under the top pressure effect of described elastic element (52), the inclined-plane, right side (513) of the head (51) of described stop pin (5) coordinates with the drive surface (432) falling locking position recess (43) after rise, the left side vertical face (515) of the head (51) of described stop pin (5) coordinates with the locking face (431) of falling locking position recess (43) after rise, now, described stop pin (5) can carry out locking prevention to rotating counterclockwise of described cam (4), and when described cam (4) starts to rotate clockwise, inclined-plane, described right side (513) coordinates stop pin (5) can be pressed down with the inclined-plane of the drive surface (432) falling locking position recess (43) after rise, thus allow described cam (4) to rotate clockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410375617.1A CN104129744B (en) | 2014-08-01 | 2014-08-01 | Cam mechanism used for lifting object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410375617.1A CN104129744B (en) | 2014-08-01 | 2014-08-01 | Cam mechanism used for lifting object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104129744A CN104129744A (en) | 2014-11-05 |
| CN104129744B true CN104129744B (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410375617.1A Expired - Fee Related CN104129744B (en) | 2014-08-01 | 2014-08-01 | Cam mechanism used for lifting object |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104129744B (en) |
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2014
- 2014-08-01 CN CN201410375617.1A patent/CN104129744B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104129744A (en) | 2014-11-05 |
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| ASS | Succession or assignment of patent right |
Owner name: HOU XUEZHI Free format text: FORMER OWNER: CHUN AN WANG AO MACHINERY TECHNOLOGY CO., LTD. Effective date: 20150319 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Inventor after: Hou Xuezhi Inventor before: Wang Tao |
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Free format text: CORRECT: ADDRESS; FROM: 311701 HANGZHOU, ZHEJIANG PROVINCE TO: 130000 CHANGCHUN, JILIN PROVINCE Free format text: CORRECT: INVENTOR; FROM: WANG TAO TO: HOU XUEZHI |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20150319 Address after: Dongfeng Street Lvyuan District of Jilin province 130000 Changchun No. 2259 Applicant after: Hou Xuezhi Address before: Jin Feng Cun Tang Fan Jin Feng Xiang Chunan County of Hangzhou City, Zhejiang Province, No. 57 311701 Applicant before: CHUN'AN WANG'AO MACHINERY SCIENCE & TECHNOLOGY CO., LTD. |
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