CN202126633U - Rotary range limit device - Google Patents
Rotary range limit device Download PDFInfo
- Publication number
- CN202126633U CN202126633U CN 201120250786 CN201120250786U CN202126633U CN 202126633 U CN202126633 U CN 202126633U CN 201120250786 CN201120250786 CN 201120250786 CN 201120250786 U CN201120250786 U CN 201120250786U CN 202126633 U CN202126633 U CN 202126633U
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- Prior art keywords
- travel switch
- switch
- rotating shaft
- limitation travel
- section
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- Expired - Lifetime
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Abstract
A rotary range limit device comprises an annular fixing seat and a rotary shaft which penetrates through the central hole of the fixing seat. A clockwise limit range switch, an counterclockwise limit range switch and a section switch are installed along the circumference of an identical side of the fixing seat. The clockwise limit range switch and the counterclockwise limit range switch are in U-shaped structure with openings towards the rotary shaft. A range switch blocking piece is installed on the rotary shaft, and when the rotary shaft rotates, the range switch blocking piece transversely penetrates through the U-shaped openings of the clockwise limit range switch and the counterclockwise limit range switch. A follow-up disc is further installed on the rotary shaft, and a driving rod disposed on the follow-up disc drives a section switch blocking piece installed on the fixing seat to screw in or screw out of a U-shaped opening of the section switch. The rotary shaft rotates towards a certain direction, stops moving when meeting hardware limit, and then rotates towards an opposite direction. The rotary range limit device is used in a server system, reliable in hardware limit, simple in structure, small in volume and capable of being used in some server systems with volume limit.
Description
Technical field
The utility model relates to stop means, in particular for the hardware limit device of rotational travel greater than 360 degree, improves the security and the reliability of servo-drive system.
Background technology
In general servo-drive system, servo rotating shaft stop means comprises software, hardware limit protective device, and when the rotating shaft rotational angle was spent above 360, software limit implemented relatively easily, and hardware limit just becomes extremely important when software failure.If hardware limit is unreliable, in case servo-drive system " driving ", can be when serious with the task device cable cutting on the servo-drive system, this consequence is very serious.
The hardware limit that general rotational travel surpasses 360 degree is designed with two kinds: a kind of is to utilize the mode of slip ring to realize that rotating shaft infinitely encloses rotation; The 2nd, the mode of taking speed reduction unit to slow down is controlled at the number of turns of rotating in the circle.Above-mentioned two kinds spacingly all have certain defective, and slip ring mode cost is higher, slip ring has strict demand to the signal that passes through, and on some has the servo-drive system of volume restrictions, can't use; And the complex structure of speed reduction unit mode, volume is big, cost is higher, and requiring has enough big space to arrange speed reduction unit, on some has the servo-drive system of volume restrictions, can't use.
The utility model content
To the above-mentioned deficiency that prior art exists, the purpose of the utility model provides a kind of dependable performance, simple in structure, rotational travel stop means that volume is little.
The technological means that the utility model addresses the above problem is such: a kind of rotational travel stop means; It is characterized in that; Comprise the holder and the rotating shaft of ring-type; Said holder mider hole is passed in said rotating shaft, is equipped with along limitation travel switch, contrary limitation travel switch and section switch with one side upper edge circumference at said holder, and said is that opening is towards " U " of said rotating shaft shape structure along limitation travel switch and contrary limitation travel switch; The travel switch catch is installed in the said rotating shaft; During the rotating shaft rotation, the travel switch catch passes across said " U " shape opening along limitation travel switch, contrary limitation travel switch, and a follower disk also is installed in rotating shaft; A driving lever is set on this follower disk, and this driving lever drives " U " shape opening that the section switch catch that is installed on the said holder screwed in or screwed out said section switch.
Said all is touchless optoelectronic switch along limitation travel switch, contrary limitation travel switch and section switch.
Said section switch is installed on the said holder through mount pad; This mount pad is installed a Geneva mechanism near the top of said rotating shaft end, and said section switch catch is fixedly mounted on this Geneva mechanism edge, and said Geneva mechanism is provided with slideway; Driving lever on the said follower disk snaps in this slideway; And slide along slideway, driving said Geneva mechanism rotation, this Geneva mechanism drives " U " shape opening that the section switch catch screwed in or screwed out said section switch.
Said section switch catch is a section of annular.
Comprise the holder and the rotating shaft of ring-type; Said holder mider hole is passed in said rotating shaft; Be equipped with along limitation travel switch, contrary limitation travel switch and two section switches with one side upper edge circumference at said holder; Said two section switches are between suitable limitation travel switch, contrary limitation travel switch; Said along limitation travel switch, contrary limitation travel switch all be opening towards " U " of said rotating shaft shape structure, said rotating shaft rotation, the travel switch catch of installing it on passes across said along limitation travel switch, against " U " shape opening of limitation travel switch and two section switches.
Said all is touchless optoelectronic switch along limitation travel switch, contrary limitation travel switch and two section switches.
Compare prior art, the good effect of the utility model is:
1, rotating shaft is rotated to certain direction, stops action when running into hardware limit, rotates in the opposite direction then, and this device uses in servo-drive system, and hardware limit is reliable, has improved the security and the reliability of servo-drive system.
2, this device also have simple in structure, volume is little, can on some have the servo-drive system of volume restrictions, use, and have the low advantage of cost, be convenient to promote the use of.
Description of drawings
The structural representation of first embodiment of Fig. 1 the utility model;
Fig. 2 is the side view of Fig. 1;
The section switch of second embodiment of Fig. 3 the utility model, suitable limitation travel switch and contrary limitation travel switch installation site concern synoptic diagram.
Embodiment
Below in conjunction with specific embodiment the utility model is done further explain.
A travel switch catch 6 is installed in rotating shaft 8, and during rotating shaft 8 rotation, travel switch catch 6 passes across and along limitation travel switch 3, contrary limitation travel switch 5.A follower disk 10 also is installed in rotating shaft 8; Columniform driving lever 9 perpendicular to its bottom surface is set on follower disk 10, a Geneva mechanism 4 is installed, at this Geneva mechanism 4 edges fixed installation section switch catch 2 near mount pad 11 tops of rotating shaft 8 ends; This section switch catch 2 is a section of annular; On Geneva mechanism 4, also be provided with slideway, when follower disk 10 rotation near Geneva mechanism 4, the driving lever 9 that install follower disk 10 bottoms snaps in slideway; And slide along slideway, drive " U " shape opening that section switch catch 2 on the Geneva mechanism 4 screwed in or screwed out section switch 1.
All be connected with servo-drive system with section switch 1 along limitation travel switch 3, contrary limitation travel switch 5, when rotating shaft 8 turned clockwise, follower disk 10 rotations were near Geneva mechanism 4; Driving lever 9 on the follower disk 10 snaps in slideway; And slide along slideway, drive Geneva mechanism 4 rotations, be installed in " U " shape opening that section switch catch 2 on the Geneva mechanism 4 screws out section switches 1 this moment; Expression rotating shaft 8 turns clockwise; Contrary limitation travel switch 5 lost efficacy, and was effective along limitation travel switch 3, when travel switch catch 6 rotates into the U type mouth along limitation travel switch 3; Servo-drive system is through reaching spacing stroke along limitation travel switch 3 perception, servo-drive system control this moment driven by motor rotating shaft 8 rotations counterclockwise.
Utilize above-mentioned principle of work; Pass through logic determines; In conjunction with required " stroke limit enable signal " the logic true value table (seeing table 1) of the controlled servo-drive system of fusion of the rotation direction of servo-drive system, control signal, limit signal, realized the stroke limit of rotational travel greater than 360 degree.
Table 1: spacing enable signal truth table,
Code description:
1) direction signal:
A) code 0 expression clockwise rotates;
2) along limitation travel switch 3:
A) code 0 expression is in clockwise spacing state;
C) code x representes to be in nondeterministic statement, can be 0 or 1.
3) contrary limitation travel switch 5:
A) code 0 expression is in counterclockwise spacing state;
C) code x representes to be in nondeterministic statement, can be 0 or 1;
4) section switch 1:
A) code 0 expression slewing area is in 0～360 degree zone;
5) stroke limit enable signal:
A) spacing the enabling of code 0 expression;
B) the not spacing free state of code 1 expression.
Embodiment 2:
As shown in Figure 3; The rotational travel stop means; Comprise circular holder 7 and rotating shaft 8; Holder 7 mider holes are passed in rotating shaft 8, are evenly distributed in the one side upper edge along limitation travel switch 3, contrary limitation travel switch 5 and 1, two section switch 1 of two section switches at holder 7 to be arranged between suitable limitation travel switch 3, contrary 5 two switches of limitation travel switch; Along limitation travel switch 3, contrary limitation travel switch 5 and two section switches 1 all is that opening is towards " U " of rotating shaft 8 shape structure; Along limitation travel switch 3, contrary limitation travel switch 5 and two section switches 1 all be touchless optoelectronic switch, during rotating shaft 8 rotations, the travel switch catch of installing it on 6 pass across suitable limitation travel switch 3, against limitation travel switch 5 and " U " shape opening.
All be connected with servo-drive system with section switch 1 along limitation travel switch 3, contrary limitation travel switch 5, when motor drives rotating shaft 8 turned clockwise, travel switch catch 6 passed that two section switches 1 are (as shown in the figure successively; Travel switch catch 6 passes C and D successively) after, system judges that the driven by motor rotating shaft turns clockwise, at this moment; Effective along limitation travel switch 3, contrary limitation travel switch 5 lost efficacy, and travel switch catch 6 rotates to along limitation travel switch 3 positions; Servo-drive system judges and to reach up time rotary stopper stroke, and servo-drive system control driven by motor rotating shaft 8 is rotated counterclockwise, and travel switch catch 6 passes that two section switches 1 are (as shown in the figure successively; Travel switch catch 6 passes D and C successively) after, system judges that the driven by motor rotating shaft is rotated counterclockwise, at this moment; Lost efficacy along limitation travel switch 3, contrary limitation travel switch 5 is effective, and rotating shaft 8 continues rotation counterclockwise; When travel switch catch 6 rotated to against limitation travel switch 5 positions, the servo-drive system judgement reached inverse time rotary stopper stroke, and servo-drive system control driven by motor rotating shaft 8 turns clockwise; So repeatedly, realize that stroke surpasses the spacing of 360 degree.
Utilize above-mentioned principle of work; Pass through logic determines; (the truth table principle listed with embodiment 1 is identical in conjunction with can controlled servo-drive system required " stroke limit enable signal " the logic true value table of the rotation direction of servo-drive system, control signal, limit signal; Repeat no more at this), realized the stroke limit of rotational travel greater than 360 degree.
The novel hardware limit device of the utility model plays extremely important effect in the servo-control system hardware limit.Through adopting this device, when stroke surpasses 360 when spending, servo-drive system is rotated to certain direction, in case when running into hardware limit, servo-drive system will stop action, can only rotate in the opposite direction.This device uses in servo-drive system, and dependable performance has solved the spacing common problem of hardware limit brake hard, has improved the security and the reliability of servo-drive system.That this device also has is simple in structure, volume is little, make this device on the servo-drive system of limited volume system, to use, and cost is low.
The foregoing description of the utility model only is to give an example for what explanation the utility model was done, and is not to be the qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation and changes.Here can't give exhaustive to all embodiments.Conspicuous variation that every technical scheme that belongs to the utility model is amplified out or change still are in the row of the protection domain of the utility model.
Claims (6)
1. rotational travel stop means; It is characterized in that; Comprise the holder (7) and the rotating shaft (8) of ring-type; Said holder (7) mider hole is passed in said rotating shaft (8), installs along limitation travel switch (3), contrary limitation travel switch (5) and section switch (1) with one side upper edge circumference at said holder (7), and said is that opening is towards " U " of said rotating shaft (8) shape structure along limitation travel switch (3) and contrary limitation travel switch (5); Travel switch catch (6) is installed in the said rotating shaft (8); During rotating shaft (8) rotation, travel switch catch (6) passes across said " U " shape opening along limitation travel switch (3), contrary limitation travel switch (5), and a follower disk (10) also is installed in rotating shaft (8); A driving lever (9) is set on this follower disk (10), and this driving lever (9) drives " U " shape opening that the section switch catch (2) that is installed on the said holder (7) screwed in or screwed out said section switch (1).
2. stop means according to claim 1 is characterized in that, said all is touchless optoelectronic switch along limitation travel switch (3), contrary limitation travel switch (5) and section switch (1).
3. stop means according to claim 1 and 2; It is characterized in that; Said section switch (1) is installed on the said holder (7) through mount pad (11), and this mount pad (11) is installed a Geneva mechanism (4) near the top of said rotating shaft (8) end, and said section switch catch (2) is fixedly mounted on this Geneva mechanism (4) edge; Said Geneva mechanism (4) is provided with slideway; Said follower disk (10) is with said rotating shaft (8) rotation, and the driving lever (9) on this follower disk (10) snaps in this slideway, and slides along slideway; Drive said Geneva mechanism (4) rotation, this Geneva mechanism (4) drives " U " shape opening that section switch catch (2) screwed in or screwed out said section switch (1).
4. stop means according to claim 3 is characterized in that, said section switch catch (2) is a section of annular.
5. rotational travel stop means; It is characterized in that; Comprise the holder (7) and the rotating shaft (8) of ring-type; Said holder (7) mider hole is passed in said rotating shaft (8); Be equipped with along limitation travel switch (3), contrary limitation travel switch (5) and two section switches (1) with one side upper edge circumference at said holder (7), said two section switches (1) are positioned at along between limitation travel switch (3), the contrary limitation travel switch (5), and said all is that opening is towards " U " of said rotating shaft (8) shape structure along limitation travel switch (3), contrary limitation travel switch (5); Said rotating shaft (8) rotation, the travel switch catch of installing on it (6) pass across said " U " shape opening along limitation travel switch (3), contrary limitation travel switch (5) and two section switches (1).
6. stop means according to claim 5 is characterized in that, said all is touchless optoelectronic switch along limitation travel switch (3), contrary limitation travel switch (5) and two section switches (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120250786 CN202126633U (en) | 2011-07-15 | 2011-07-15 | Rotary range limit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120250786 CN202126633U (en) | 2011-07-15 | 2011-07-15 | Rotary range limit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126633U true CN202126633U (en) | 2012-01-25 |
Family
ID=45489699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120250786 Expired - Lifetime CN202126633U (en) | 2011-07-15 | 2011-07-15 | Rotary range limit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126633U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354253A (en) * | 2011-07-15 | 2012-02-15 | 中国电子科技集团公司第二十六研究所 | Inhibiting device with over-360 degree rotation stroke |
| CN109243882A (en) * | 2018-09-26 | 2019-01-18 | 天佑电器（苏州）有限公司 | switch box device and power tool |
| CN112596122A (en) * | 2020-11-20 | 2021-04-02 | 博微太赫兹信息科技有限公司 | Terahertz imager detector array calibrating device |
-
2011
- 2011-07-15 CN CN 201120250786 patent/CN202126633U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354253A (en) * | 2011-07-15 | 2012-02-15 | 中国电子科技集团公司第二十六研究所 | Inhibiting device with over-360 degree rotation stroke |
| CN102354253B (en) * | 2011-07-15 | 2013-05-08 | 中国电子科技集团公司第二十六研究所 | Inhibiting device with over-360 degree rotation stroke |
| CN109243882A (en) * | 2018-09-26 | 2019-01-18 | 天佑电器（苏州）有限公司 | switch box device and power tool |
| CN109243882B (en) * | 2018-09-26 | 2023-11-21 | 天佑电器（苏州）有限公司 | Switch box device and power tool |
| CN112596122A (en) * | 2020-11-20 | 2021-04-02 | 博微太赫兹信息科技有限公司 | Terahertz imager detector array calibrating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120125 Effective date of abandoning: 20130508 |
|
| RGAV | Abandon patent right to avoid regrant |