CN201294202Y - Rotation-proof working cylinder for high-voltage circuit-breaker - Google Patents
Rotation-proof working cylinder for high-voltage circuit-breaker Download PDFInfo
- Publication number
- CN201294202Y CN201294202Y CNU2008202210273U CN200820221027U CN201294202Y CN 201294202 Y CN201294202 Y CN 201294202Y CN U2008202210273 U CNU2008202210273 U CN U2008202210273U CN 200820221027 U CN200820221027 U CN 200820221027U CN 201294202 Y CN201294202 Y CN 201294202Y
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- China
- Prior art keywords
- piston rod
- potential drop
- dividing potential
- drop contact
- rotation
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- Expired - Lifetime
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Abstract
The utility model relates to an anti-rotation working cylinder of a high-voltage circuit-breaker, which comprises a cylinder body and a piston rod which is movably installed in the cylinder body, wherein a piston rod anti-rotation device is arranged on the extended end of the piston rod on the cylinder body. The working cylinder adopted the scheme is provided with a piston anti-rotation device on the cylinder body, wherein the device comprises a coupling base, a lower flange and an upper flange, wherein the coupling base is fixed with the cylinder body, guide rails which are extended along the axial line of the cylinder body are arranged on the coupling base, the lower flange is fixed with the piston rod, a ring-shaped groove corresponding to the guide rails on the coupling base is arranged on the lower flange, and the lower flange only can move up and down along the guide rails, which limits the rotation of the piston rod, and prevents the connector loosening, threads tripping or the dropping of the whole connector caused by the rotation of the piston rod.
Description
Technical field
The utility model relates to a kind of primary cut-out anti-rotation working cylinder.
Background technology
On primary cut-out, use hydraulic cylinder as circuit branch, the execution unit that closes.The branch of primary cut-out, what close that action adopts is multi-range transmission, during the motion of working cylinder piston bar rotation is arranged, and causes the joint of junction loosening, and screw thread is threaded off, and causes whole joint to come off when serious.When generally overhauling, this situation can not get rid of hidden danger, mechanism's demonstration puts in place, but the insulated tension pole part may be threaded off, be in the half point state that narrows, be easy to generate the arcing phenomenon, burn out contact, circuit breaker perhaps occurring will can not reliable deciliter in operation, has bigger accident potential.
The utility model content
The purpose of this utility model provides a kind of primary cut-out anti-rotation working cylinder, the problem that piston rod rotates when solving the work on hand cylinder working.
For achieving the above object, the utility model adopts following technical scheme: primary cut-out anti-rotation working cylinder comprises cylinder body and is movably installed in the interior piston rod of cylinder body that an end that stretches out at piston rod on the described cylinder body is provided with the piston rod anti-rotation device.
Described piston rod anti-rotation device comprises Connection Block and the upper and lower flange that is fixed together, Connection Block is fixed on cylinder ends, Connection Block is provided with guide rail or the chute that extends along the cylinder body axis, lower flange and piston rod are fixedly connected, upper flange is used for fixedlying connected with insulated tension pole, lower flange and/or upper flange be provided with Connection Block on guide rail or the chute annular groove or the boss that are slidingly matched.
Described lower flange is fixedlyed connected with piston rod by the flange adapter sleeve, and upper flange is fixedlyed connected with insulated tension pole by another flange adapter sleeve.
On the described cylinder side wall at the anti-device that divides slowly that also is provided with near the position of piston rod external part radially, should anti-divide slowly device have radially, can come and go straight-line anti-slow dividing potential drop contact, anti-slow dividing potential drop contact compresses piston rod and prevents that piston rod from falling after rise when piston rod is in the position of closing.
Described anti-slow dividing potential drop contact is cambered surface or sphere near the end face of piston rod one end, is provided with annular groove in the corresponding position of fashionable and anti-slow dividing potential drop contact on the piston rod, and the end of anti-slow dividing potential drop contact is pressed into described annular groove when piston rod is in the position of closing.
Describedly anti-divide device to comprise the spring base of spinning in the cylinder side wall through hole slowly, anti-slow dividing potential drop contact is installed in the central through hole of spring base, rear sleeve at anti-slow dividing potential drop contact is equipped with the compression spring, the front end of compression spring contacts with the shaft shoulder of anti-slow dividing potential drop contact, and the rear end of compression spring contacts with the step of spring base central through hole; Prevent dividing device to be provided with circumferential sealing slowly.
Described cylinder side wall through hole is pressed the contact installation sleeve being equiped with near an end of inboard wall of cylinder block, and anti-slow dividing potential drop contact in pressing the contact installation sleeve, is provided with circumferential sealing in the part slidable fit of shaft shoulder front end between anti-slow dividing potential drop contact and pressure contact installation sleeve; Between pressure contact installation sleeve and cylinder body, be provided with circumferential sealing.
The tail end of described anti-slow dividing potential drop contact is provided with the test screwed hole.
Locking nut is equipped with in the end that described spring base exposes the outer wall of cylinder block face.
Described compression spring is a disk spring.
Adopt the working cylinder of such scheme, be provided with the piston rod anti-rotation device on the cylinder body, this device comprises coupling seat, the upper and lower flange that is fixed together mutually, Connection Block and cylinder body fixed connection are together, Connection Block is provided with the guide rail that extends along the cylinder body axis, lower flange and piston rod fixed connection are together, lower flange be provided with Connection Block on the corresponding annular groove of guide rail, lower flange can only move up and down along guide rail, limited the rotation of piston rod, prevented that the joint that causes is loosening, screw thread is threaded off or whole joint comes off because of piston rod rotates.
The utility model is set up anti-slow packing postpone on cylinder body, piston rod reaches the place, service position during work, annular groove and spring that this moment is anti-divides the curved end of the anti-slow dividing potential drop contact of device to be positioned at piston rod just slowly are in compressive state, the elastic force that spring stores affacts on the piston rod by anti-slow dividing potential drop contact, anti-slow dividing potential drop contact affacts the gravity that making every effort to overcome on the piston rod obeyed system friction and piston rod and be connected the parts on the piston rod when system's decompression, the counter-force sum of atmospheric pressure and resistance contact head, limit the motion of piston rod, played the effect that prevents that piston rod from falling after rise.In addition, be provided with locking nut, be used for preventing to divide slowly device to occur loosening and the anti-branch effect slowly of influence at an anti-end that divides device to expose cylinder body slowly.Whether the anti-opposing end of slow dividing potential drop contact curved end is provided with the test screwed hole, can test screwed hole and detect preventing dividing to put in place slowly.Anti-slow dividing potential drop contact and anti-slow dividing potential drop contact installation sleeve all are equipped with axial seal near the hydraulic pressure rod end, can well guarantee the anti-sealing effectiveness that divides slowly between device and the cylinder body like this, have prevented to occur hydraulic oil from the anti-leakage that divides device slowly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the part of cylinder block cutaway view;
Fig. 4 is the local amplification view of anti-slow sub-unit.
Embodiment
Primary cut-out anti-rotation working cylinder shown in Fig. 1,2,3,4, comprise cylinder body 8 and be movably installed in the interior piston rod 6 of cylinder body, fixed installation coupling seat 7 on the end face of piston rod 6 external parts is provided with the guide rail 9 that extends along cylinder body 8 axis in the middle of the coupling seat 7 one side inwalls.The end of piston rod 6 be fixedly connected sequentially from top to bottom lower flange coupling sleeve 5, lower flange 4, upper flange 3 and upper flange coupling sleeve 2, upper flange coupling sleeve 2 is used for fixedlying connected with insulated tension pole, and the groove on the lower flange 4 10 is slidingly matched with guide rail 9 on the coupling seat 7 and is assembled together.
In addition, be provided with the anti-device installing hole 18 that divides slowly near piston rod 6 external parts on the cylinder body 8, the anti-device installing hole 18 that divides slowly is counter sink, and its bigger diameter end is screwed hole and close cylinder body 8 outer walls, and the center line in this hole is through the axis of cylinder body 8.Near the hydraulic pressure rod end is the anti-slow dividing potential drop contact installation sleeve 15 identical miner diameter ends of preventing dividing slowly installing hole 18 that are installed on of spherical end surface, anti-slow dividing potential drop contact installation sleeve 15 path outer peripheral faces offer the sealing ring mounting groove, sealing ring 17 is installed in the sealing ring mounting groove, certainly, the spherical end surface of anti-slow dividing potential drop contact also can change curved end into.Anti-slow dividing potential drop contact 13 is installed on the anti-slow dividing potential drop contact installation sleeve 15, and the close piston rod 6 of anti-slow dividing potential drop contact 13 spherical end surfaces, and position corresponding with anti-slow dividing potential drop contact spherical end surface on the piston rod 6 is provided with the annular groove 27 that cooperates with this spherical end surface.The axle journal that anti-slow dividing potential drop contact 13 is installed in the anti-slow dividing potential drop contact installation sleeve 15 is provided with the sealing ring mounting groove, sealing ring 28 is installed in the sealing ring mounting groove, the end face that deviates from spherical end surface is provided with test screwed hole 16, is laid with disk spring 14 on the axle journal of test screwed hole 16 1 ends.Spring base 12 is bound up by the mode and the cylinder body 8 of screw thread, and disk spring 14 is in the spring installation room 19 of spring base 12 and is in compressive state, the inner face of spring base 12 contacts with anti-slow dividing potential drop contact installation sleeve 15, instrument connection 20 on the spring base 12 and 16 deads in line of test screwed hole.Spring base 12 exposes cylinder body 8 ends locking nut 11 is installed.
Claims (10)
1. primary cut-out anti-rotation working cylinder comprises cylinder body and is movably installed in the interior piston rod of cylinder body, and it is characterized in that: an end that stretches out at piston rod on the described cylinder body is provided with the piston rod anti-rotation device.
2. primary cut-out anti-rotation working cylinder according to claim 1, it is characterized in that: described piston rod anti-rotation device comprises Connection Block and the upper and lower flange that is fixed together, Connection Block is fixed on cylinder ends, Connection Block is provided with guide rail or the chute that extends along the cylinder body axis, lower flange and piston rod are fixedly connected, upper flange is used for fixedlying connected with insulated tension pole, lower flange and/or upper flange be provided with Connection Block on guide rail or the chute annular groove or the boss that are slidingly matched.
3. primary cut-out anti-rotation working cylinder according to claim 2 is characterized in that: described lower flange is fixedlyed connected with piston rod by the flange adapter sleeve, and upper flange is fixedlyed connected with insulated tension pole by another flange adapter sleeve.
4. according to claim 1 or 2 or 3 described primary cut-out anti-rotation working cylinders, it is characterized in that: on the described cylinder side wall at the anti-device that divides slowly that also is provided with near the position of piston rod external part radially, should anti-divide slowly device have radially, can come and go straight-line anti-slow dividing potential drop contact, anti-slow dividing potential drop contact compresses piston rod and prevents that piston rod from falling after rise when piston rod is in the position of closing.
5. primary cut-out anti-rotation working cylinder according to claim 4, it is characterized in that: described anti-slow dividing potential drop contact is cambered surface or sphere near the end face of piston rod one end, be provided with annular groove in the corresponding position of fashionable and anti-slow dividing potential drop contact on the piston rod, the end of anti-slow dividing potential drop contact is pressed into described annular groove when piston rod is in the position of closing.
6. primary cut-out anti-rotation working cylinder according to claim 5, it is characterized in that: describedly anti-divide device to comprise the spring base of spinning in the cylinder side wall through hole slowly, anti-slow dividing potential drop contact is installed in the central through hole of spring base, rear sleeve at anti-slow dividing potential drop contact is equipped with the compression spring, the front end of compression spring contacts with the shaft shoulder of anti-slow dividing potential drop contact, and the rear end of compression spring contacts with the step of spring base central through hole; Prevent dividing device to be provided with circumferential sealing slowly.
7. primary cut-out anti-rotation working cylinder according to claim 6, it is characterized in that: described cylinder side wall through hole is equiped with at the end near inboard wall of cylinder block and presses the contact installation sleeve, anti-slow dividing potential drop contact in pressing the contact installation sleeve, is provided with circumferential sealing in the part slidable fit of shaft shoulder front end between anti-slow dividing potential drop contact and pressure contact installation sleeve; Between pressure contact installation sleeve and cylinder body, be provided with circumferential sealing.
8. primary cut-out anti-rotation working cylinder according to claim 7 is characterized in that: the tail end of described anti-slow dividing potential drop contact is provided with the test screwed hole.
9. primary cut-out anti-rotation working cylinder according to claim 8 is characterized in that: locking nut is equipped with in the end that described spring base exposes the outer wall of cylinder block face.
10. primary cut-out anti-rotation working cylinder according to claim 9 is characterized in that: described compression spring is a disk spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202210273U CN201294202Y (en) | 2008-11-17 | 2008-11-17 | Rotation-proof working cylinder for high-voltage circuit-breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202210273U CN201294202Y (en) | 2008-11-17 | 2008-11-17 | Rotation-proof working cylinder for high-voltage circuit-breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201294202Y true CN201294202Y (en) | 2009-08-19 |
Family
ID=41007684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202210273U Expired - Lifetime CN201294202Y (en) | 2008-11-17 | 2008-11-17 | Rotation-proof working cylinder for high-voltage circuit-breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201294202Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966625A (en) * | 2012-06-20 | 2013-03-13 | 苏州世力源科技有限公司 | Anti-rotation structure and method for hydraulic cylinder |
| CN107293422A (en) * | 2017-06-05 | 2017-10-24 | 河南平高电气股份有限公司 | A kind of breaker and its anti-slow separating device |
-
2008
- 2008-11-17 CN CNU2008202210273U patent/CN201294202Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966625A (en) * | 2012-06-20 | 2013-03-13 | 苏州世力源科技有限公司 | Anti-rotation structure and method for hydraulic cylinder |
| CN107293422A (en) * | 2017-06-05 | 2017-10-24 | 河南平高电气股份有限公司 | A kind of breaker and its anti-slow separating device |
| CN107293422B (en) * | 2017-06-05 | 2019-01-22 | 河南平高电气股份有限公司 | A kind of breaker and its prevent slow separating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |
|
| CX01 | Expiry of patent term |