CN114512375B - Insulating pull rod capable of being installed rapidly - Google Patents
Insulating pull rod capable of being installed rapidly Download PDFInfo
- Publication number
- CN114512375B CN114512375B CN202210203876.0A CN202210203876A CN114512375B CN 114512375 B CN114512375 B CN 114512375B CN 202210203876 A CN202210203876 A CN 202210203876A CN 114512375 B CN114512375 B CN 114512375B
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- CN
- China
- Prior art keywords
- locking
- connecting rod
- rod
- pull rod
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
Landscapes
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an insulating pull rod capable of being quickly installed, which comprises the following components: a pull rod made of an insulating material; the periphery of the pull rod is provided with a rubber layer; the rubber layer is formed with an umbrella group; the two ends of the pull rod are respectively detachably connected with a connecting insert formed with an installation space and a steel sleeve used for inserting the pin shaft; a connecting rod is arranged in a cavity groove formed by the connecting inserts; one end of the connecting rod is provided with a positioning bulge; the bottom of the cavity groove is provided with a positioning groove for inserting one end of the connecting rod and the positioning bulge to position and install the connecting rod and a fixing groove for rotating one end of the connecting rod to fix one end of the connecting rod through the positioning bulge; the positioning groove is communicated with the fixing groove and is overlapped with the fixing groove in the extending direction of the connecting rod; a locking device for performing secondary locking on the fixed position of the connecting rod is arranged in a cavity formed in the connecting rod. The insulation pull rod capable of being quickly installed can ensure the over-travel precision of the circuit breaker, and further ensure the stability of the performance of the circuit breaker.
Description
Technical Field
The invention relates to the technical field of insulating pull rods, in particular to an insulating pull rod capable of being quickly installed.
Background
The insulating pull rod is a key part of the circuit breaker, and the performance of the insulating pull rod directly influences the voltage resistance, the insulating performance, the breaking performance, the running safety and reliability and the like of the circuit breaker. The existing insulation pull rod mainly comprises an insulation shell, a connecting rod, an outer nut, an insert and a spring, wherein the insert is positioned in the insulation shell, the connecting rod penetrates through the outer nut to be connected in the insert, and the connecting rod at one end of the insulation pull rod is connected with a movable conductive rod of a vacuum arc-extinguishing chamber of the circuit breaker. The other end of the insulating pull rod is provided with a hinge hole for inserting a pin shaft, and the insulating pull rod is connected to a main crank arm of the circuit breaker through the pin shaft. In the assembly process of the insulating pull rod and the vacuum arc-extinguishing chamber, the connecting rod on the insulating pull rod is rotated and screwed on the movable conducting rod assembled to the vacuum arc-extinguishing chamber, the insulating shell and the connecting rod are simultaneously rotated in the installation process, the hinge hole at the end part of the insulating pull rod needs to be swung to a proper installation position, the insulating pull rod can be connected on the main crank arm of the circuit breaker through the pin shaft, the over-travel precision of the circuit breaker is directly related to the position precision between the insulating pull rod and the arc-extinguishing chamber, and the installation position of the insulating pull rod is limited by the hinge hole, so that the over-travel precision of the circuit breaker is not high enough.
Disclosure of Invention
The invention provides an insulating pull rod capable of being quickly installed, which adopts the following technical scheme:
an insulating pull rod capable of being quickly installed, comprising: a pull rod made of an insulating material; the periphery of the pull rod is provided with a rubber layer; the rubber layer is formed with an umbrella group for increasing the creepage distance of the pull rod; the two ends of the pull rod are respectively detachably connected with a connecting insert formed with an installation space and a steel sleeve used for inserting the pin shaft; a connecting rod is arranged in a cavity groove formed by the connecting inserts; one end of the connecting rod is provided with a positioning bulge; the bottom of the cavity groove is provided with a positioning groove for inserting one end of the connecting rod and the positioning bulge to position and install the connecting rod and a fixing groove for rotating one end of the connecting rod to fix one end of the connecting rod through the positioning bulge; the positioning groove is communicated with the fixing groove and is overlapped with the fixing groove in the extending direction of the connecting rod; a locking device for performing secondary locking on the fixed position of the connecting rod is arranged in a cavity formed in the connecting rod.
Further, two locking holes are formed on the wall of the cavity groove; the locking device includes: the locking device comprises a locking rod formed with a pushing inclined plane, two locking pins used for locking the position of the connecting rod and formed with a matching inclined plane, a first spring used for pulling the two locking pins to be separated from the locking holes, and a second spring used for pushing the locking rod to drive the locking pins to be inserted into the locking holes through the matching of the pushing inclined plane and the matching inclined plane; the locking lever is formed with insertion holes for two locking pins to pass through to be inserted into the locking holes; the two locking pins are always kept partially positioned in the jack; the locking rod is connected in the cavity in a sliding way; the locking rod is formed with a moving groove for the first spring to pass through and move; the first spring passes through the moving groove and two ends of the first spring are respectively connected to the matching inclined planes of the two locking pins so that the matching inclined planes of the two locking pins are attached to the driving inclined planes of the locking rods; one end of the second spring is connected to the bottom of the cavity, and the other end of the second spring contacts one end of the locking rod; when the positioning bulge rotates to be positioned in the fixing groove, one ends of the two locking pins are aligned with the two locking holes respectively.
Further, the outside of connecting rod laminating chamber groove's cell wall.
Further, the locking bar at least partially engages the cavity wall of the cavity.
Further, the width of the moving slot is smaller than the width of the projection of the mating ramp.
Further, the moving groove extends in the extending direction of the lock lever.
Further, the steel sleeve is connected to one end of the pull rod through threads; the steel sleeve is formed with a hinge hole for inserting the pin shaft.
The quick-mounting insulation pull rod has the advantages that the quick-mounting insulation pull rod can be quickly connected with the connecting rod, the dismounting speed is high, the connecting stability of the connecting rod is ensured, meanwhile, the pull rod can be prevented from rotating, the change of the mounting position of the steel sleeve is avoided, the over-travel precision of the circuit breaker can be ensured, and the stability of the performance of the circuit breaker is further ensured.
Drawings
FIG. 1 is a schematic view of a quick-install insulated pull rod of the present invention;
FIG. 2 is an enlarged partial schematic view of the quick-install insulating pull rod of FIG. 1;
the insulation pull rod 10, the pull rod 11, the rubber layer 12, the umbrella group 121, the connecting insert 13, the cavity groove 131, the positioning groove 132, the fixing groove 133, the locking hole 134, the connecting rod 14, the positioning protrusion 141, the cavity 142, the locking device 15, the locking rod 151, the insertion hole 152, the moving groove 153, the locking pin 154, the matching inclined surface 155, the first spring 156, the second spring 157, the pushing inclined surface 158, the steel sleeve 16 and the hinge hole 161 which can be quickly installed.
Detailed Description
The invention is described in detail below with reference to the drawings and the specific embodiments.
As shown in fig. 1 to 2, an insulation pull rod 10 capable of being rapidly installed according to the present invention includes: the pull rod 11 made of an insulating material, the outer circumference of the pull rod 11 is provided with a rubber layer 12, and the rubber layer 12 is formed with an umbrella group 121 for increasing the creepage distance of the pull rod 11. The insulating tie rod 11 is a key component of the circuit breaker, and its performance directly affects the voltage withstand performance, insulating performance, breaking performance, operational safety, and the like of the circuit breaker. The two ends of the pull rod 11 are respectively detachably connected with a connecting insert 13 which forms an installation space and a steel sleeve 16 for inserting a pin shaft. The steel bushing 16 is screw-coupled to one end of the pull rod 11, and the steel bushing 16 is formed with a hinge hole 161 for inserting a pin shaft. One end of the insulating pull rod 11 is connected with a movable conducting rod of a vacuum arc-extinguishing chamber of the circuit breaker through a connecting rod 14 arranged in the connecting insert 13, and the other end of the insulating pull rod is connected with a main crank arm of the circuit breaker through a pin shaft arranged in the steel sleeve 16.
As an optimized structure of the scheme, the connecting insert 13 is formed with a cavity 131, and the connecting rod 14 is detachably mounted in the cavity 131. Specifically, one end of the connection rod 14 is formed with a positioning protrusion 141. The bottom of the cavity groove 131 is formed with a positioning groove 132. The positioning groove 132 is used for inserting one end of the connecting rod 14 and the positioning protrusion 141 to position the mounting connecting rod 14. The bottom of the cavity groove 131 is also formed with a fixing groove 133. The fixing groove 133 is used for driving the positioning protrusion 141 to rotate into the fixing groove 133 when one end of the connecting rod 14 rotates, so that one end of the connecting rod 14 can be fixed by the positioning protrusion 141, and the connecting rod 14 is fixed in the cavity 131. The positioning groove 132 communicates with the fixing groove 133 and overlaps with the fixing groove 133 in the extending direction of the connecting rod 14. The connecting rod 14 is internally formed with a cavity 142, and a locking device 15 is provided in the cavity 142 for secondary locking of the fixed position of the connecting rod 14. That is, the positioning groove 132 is matched with the positioning protrusion 141 and one end of the connecting rod 14, and a fixing groove 133 into which the positioning protrusion 141 is rotated is formed on the groove wall of the connecting groove bottom of the positioning groove 132, and when the positioning protrusion 141 is inserted into the bottom of the positioning groove 132, the connecting rod 14 is rotated to drive the positioning protrusion 141 to rotate into the fixing groove 133. At this time, the position of the connection rod 14 can be locked by the locking device 15 to prevent the connection rod 14 from rotating, thereby stably fixing the positioning protrusion 141 in the fixing groove 133. In such a mounting process, the pull rod 11 can be driven to rotate without any operation, the mounting accuracy is high, and the mounting rhythm is fast.
The insulating pull rod 10 capable of being quickly installed can be quickly connected with the installation connecting rod 14, the dismounting speed is high, the connection stability of the connecting rod 14 is guaranteed, meanwhile, the pull rod 11 can be prevented from rotating, the change of the installation position of the steel sleeve 16 is avoided, the over-travel precision of the circuit breaker can be guaranteed, and the stability of the performance of the circuit breaker is guaranteed
As a specific embodiment, the groove wall of the cavity 131 is formed with two locking holes 134. The locking device 15 includes: a locking lever 151, two locking pins 154, a first spring 156 and a second spring 157. The locking lever 151 is formed with a push slope 158, and two locking pins 154 for locking the position of the connecting rod 14, and a fitting slope 155 for fitting the push slope 158. The first spring 156 is used to pull the two locking pins 154 out of the locking holes 134, and the second spring 157 is used to push the locking lever 151 and thus the push inclined surface 158 to drive the locking pins 154 to be inserted into the locking holes 134 by the cooperation of the push inclined surface 158 and the cooperation inclined surface 155. Specifically, the locking lever 151 is formed with a socket 152, and the socket 152 is used for passing two locking pins 154 to be inserted into the locking holes 134 formed in the connecting lever 14. The locking rod 151 is slidably coupled within the cavity 142. The locking lever 151 is formed with a moving groove 153 for passing and moving the first spring 156. The first spring 156 passes through the moving groove 153 and is connected at both ends to the engagement inclined surfaces 155 of the two locking pins 154, respectively, so that the engagement inclined surfaces 155 of the two locking pins 154 fit the driving inclined surfaces of the locking lever 151. The two locking pins 154 remain partially located within the receptacle 152 under the constraint of the first spring 156. One end of the second spring 157 is connected to the bottom of the cavity 142 and the other end contacts one end of the locking lever 151. When the positioning boss 141 is rotated to be positioned in the fixing groove 133, one ends of the two locking pins 154 are aligned with the two locking holes 134, respectively.
Specifically, when the connecting rod 14 is installed, the locking rod 151 in the cavity 142 is pushed into the cavity 142, the first spring 156 keeps pulling the two locking pins 154 to move towards each other under the limitation of the moving groove 153, and the two locking pins 154 can be kept in the jack 152 all the time due to the sliding relationship between the pushing inclined surface 158 and the matching inclined surface 155, that is, one ends of the two locking pins 154 far from the first spring 156 are kept in the jack 152. At the same time, the connection rod 14 is inserted into the cavity groove 131 until one end of the connection rod 14 and the positioning protrusion 141 enter the positioning groove 132, and then the connection rod 14 is rotated to move the positioning protrusion 141 to the fixing groove 133. In this process, the locking lever 151 is always kept pressed, and after the positioning protrusion 141 moves to the fixing groove 133, one ends of the two locking pins 154 are aligned with the two locking holes 134, respectively, at this time, the locking lever 151 is released, the second spring 157 reversely pushes the locking lever 151, and the two locking pins 154 extend into the locking holes 134 under the action of the pushing inclined surface 158, thereby completing the position locking of the connecting rod 14. When the connecting rod 14 needs to be removed, the locking rod 151 is pressed again, and the connecting rod 14 is rotated reversely to pull out the connecting rod 14.
As a specific embodiment, the outer side of the connection rod 14 is fitted to the groove wall of the cavity groove 131 to increase the installation stability and the installation accuracy of the connection rod 14.
As a specific embodiment, locking bar 151 at least partially conforms to the cavity wall of cavity 142. That is, the locking bar 151 does not have to entirely conform to the cavity wall of the cavity 142, which can reduce the overall mass of the connecting bar 14.
As a specific embodiment, the width of the moving groove 153 is smaller than the projected width of the fitting bevel 155. This ensures that the mating ramp 155 and the push ramp 158 are always in contact, thereby ensuring the reliability of the locking mechanism.
Specifically, the movement groove 153 extends in the extending direction of the lock lever 151, and the first spring 156 is movable in the left-right direction within the movement groove 153 in a certain range.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the invention in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the invention.
Claims (5)
1. An insulating pull rod capable of being quickly installed, comprising: a pull rod made of an insulating material; a rubber layer is arranged on the periphery of the pull rod; the rubber layer is formed with an umbrella group for increasing the creepage distance of the pull rod; the two ends of the pull rod are respectively detachably connected with a connecting insert formed with an installation space and a steel sleeve used for inserting a pin shaft; a connecting rod is arranged in a cavity groove formed by the connecting insert; one end of the connecting rod is provided with a positioning bulge; the bottom of the cavity groove is provided with a positioning groove for inserting one end of the connecting rod and the positioning protrusion to position and mount the connecting rod and a fixing groove for rotating one end of the connecting rod to fix one end of the connecting rod through the positioning protrusion; the positioning groove is communicated with the fixing groove and is overlapped with the fixing groove in the extending direction of the connecting rod; a locking device for performing secondary locking on the fixed position of the connecting rod is arranged in a cavity formed in the connecting rod;
the wall of the cavity groove is provided with two locking holes; the locking device includes: the locking device comprises a locking rod, two locking pins, a first spring and a second spring, wherein the locking rod is provided with a pushing inclined surface, the two locking pins are provided with matching inclined surfaces, the locking pins are used for locking the position of the connecting rod, the first spring is used for pulling the two locking pins to be separated from the locking holes, and the second spring is used for pushing the locking rod to drive the locking pins to be inserted into the locking holes through the matching of the pushing inclined surface and the matching inclined surface; the locking lever is formed with insertion holes for two locking pins to pass through to be inserted into the locking holes; the two locking pins are always kept partially positioned in the jack; the locking rod is connected in the cavity in a sliding way; the locking lever is formed with a moving groove for the first spring to pass through and move; the first spring passes through the moving groove and is respectively connected to the matching inclined planes of the two locking pins at two ends so that the matching inclined planes of the two locking pins are attached to the driving inclined planes of the locking rods; one end of the second spring is connected to the bottom of the cavity, and the other end of the second spring contacts one end of the locking rod; when the positioning bulge rotates to be positioned in the fixing groove, one ends of the two locking pins are aligned with the two locking holes respectively;
the steel sleeve is connected to one end of the pull rod through threads; the steel sleeve is formed with a hinge hole for inserting the pin shaft.
2. A quick-install insulated pull rod as claimed in claim 1, wherein,
the outside of connecting rod laminating the cell wall in chamber groove.
3. A quick-install insulated pull rod as claimed in claim 1, wherein,
the locking bar at least partially engages a wall of the cavity.
4. A quick-install insulated pull rod as claimed in claim 1, wherein,
the width of the moving groove is smaller than the projected width of the matching inclined surface.
5. A quick-install insulated pull rod as recited in claim 4, wherein,
the moving groove extends in an extending direction of the locking lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203876.0A CN114512375B (en) | 2022-03-02 | 2022-03-02 | Insulating pull rod capable of being installed rapidly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203876.0A CN114512375B (en) | 2022-03-02 | 2022-03-02 | Insulating pull rod capable of being installed rapidly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114512375A CN114512375A (en) | 2022-05-17 |
| CN114512375B true CN114512375B (en) | 2023-12-15 |
Family
ID=81552905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210203876.0A Active CN114512375B (en) | 2022-03-02 | 2022-03-02 | Insulating pull rod capable of being installed rapidly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114512375B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4090157A (en) * | 1977-01-31 | 1978-05-16 | Gould Inc. | Operating handle means for stacked circuit breaker modules |
| CN2938374Y (en) * | 2006-04-24 | 2007-08-22 | 大全集团有限公司 | Movable contact drive structure of vacuum circuit breaker |
| CN203536236U (en) * | 2013-10-31 | 2014-04-09 | 合肥天海电气技术有限公司 | A stable insulating pull rod for a breaker |
| CN104576169A (en) * | 2014-12-25 | 2015-04-29 | 天津平高智能电气有限公司 | Insulation pole and circuit breaker using same |
| CN204577334U (en) * | 2015-05-08 | 2015-08-19 | 常熟开关制造有限公司(原常熟开关厂） | A kind of insulated tension pole of vacuum circuit-breaker |
| CN209641584U (en) * | 2019-05-15 | 2019-11-15 | 陕西宝光真空电器股份有限公司 | A kind of turnable structure pole insulated pull rod |
| CN210272186U (en) * | 2019-08-07 | 2020-04-07 | 江苏丹通电气有限公司 | High-voltage vacuum arc-extinguishing chamber convenient to install and use |
| CN213212024U (en) * | 2020-07-23 | 2021-05-14 | 坦帕（福建）电气有限公司 | Three-phase linkage isolating switch |
-
2022
- 2022-03-02 CN CN202210203876.0A patent/CN114512375B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4090157A (en) * | 1977-01-31 | 1978-05-16 | Gould Inc. | Operating handle means for stacked circuit breaker modules |
| CN2938374Y (en) * | 2006-04-24 | 2007-08-22 | 大全集团有限公司 | Movable contact drive structure of vacuum circuit breaker |
| CN203536236U (en) * | 2013-10-31 | 2014-04-09 | 合肥天海电气技术有限公司 | A stable insulating pull rod for a breaker |
| CN104576169A (en) * | 2014-12-25 | 2015-04-29 | 天津平高智能电气有限公司 | Insulation pole and circuit breaker using same |
| CN204577334U (en) * | 2015-05-08 | 2015-08-19 | 常熟开关制造有限公司(原常熟开关厂） | A kind of insulated tension pole of vacuum circuit-breaker |
| CN209641584U (en) * | 2019-05-15 | 2019-11-15 | 陕西宝光真空电器股份有限公司 | A kind of turnable structure pole insulated pull rod |
| CN210272186U (en) * | 2019-08-07 | 2020-04-07 | 江苏丹通电气有限公司 | High-voltage vacuum arc-extinguishing chamber convenient to install and use |
| CN213212024U (en) * | 2020-07-23 | 2021-05-14 | 坦帕（福建）电气有限公司 | Three-phase linkage isolating switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114512375A (en) | 2022-05-17 |
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