WO2013042685A1 - 負荷時タップ切換装置、及びその蓄勢機構 - Google Patents
負荷時タップ切換装置、及びその蓄勢機構 Download PDFInfo
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- WO2013042685A1 WO2013042685A1 PCT/JP2012/073921 JP2012073921W WO2013042685A1 WO 2013042685 A1 WO2013042685 A1 WO 2013042685A1 JP 2012073921 W JP2012073921 W JP 2012073921W WO 2013042685 A1 WO2013042685 A1 WO 2013042685A1
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- gear
- energy storage
- crank
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- spring
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- 230000007246 mechanism Effects 0.000 title claims abstract description 104
- 230000000452 restraining effect Effects 0.000 claims abstract 3
- 238000004146 energy storage Methods 0.000 claims description 98
- 238000004804 winding Methods 0.000 claims description 61
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 2
- 210000000078 claw Anatomy 0.000 description 8
- 230000009471 action Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3052—Linear spring motors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/016—Preloading
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/001—Means for preventing or breaking contact-welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/3015—Charging means using cam devices
Definitions
- Embodiments of the present invention relate to an on-load tap switching device used for a transformer and the like and an energy storage mechanism for driving the switching switch.
- the load tap switching device is a device that switches the voltage while applying a load current to the transformer.
- This on-load tap switching device opens and closes the vacuum valve by rotating the drive rod, and the switching switch selects the energizing contact.
- the torque required for the rotation of the drive rod is given by the energy storage mechanism.
- the energy storage mechanism rotates the drive rod by a spring force (see, for example, Patent Document 1).
- This accumulator mechanism includes a winding case that is synchronously linked through a drive shaft rotated by an electric operation mechanism and an eccentric cam, an accumulator case that is linked through a hoist case and a spring, a crank that is synchronized with the accumulator case, and a spring force accumulator It consists of a catch that holds down the rotation of the crank at the closing position.
- This accumulator mechanism accumulates the spring force necessary for switching by rotating the drive shaft when the catch is in the closing position, and performs switching by releasing the spring force.
- the catch may not return to the closing position due to an increase in load torque necessary for switching due to irregular load operation.
- the energy storage mechanism is provided with a forced input mechanism that forcibly sends the catch to the input position by the rotational torque of the drive shaft.
- a hook is attached to the eccentric cam, a bearing is attached to the energy storage case, and the hook pushes the bearing with the rotation of the eccentric cam attached to the drive shaft. Then the energy storage case slides.
- the catch With this forced closing mechanism, the catch can be moved to the closing position without depending on the torque generated by the spring force.
- the eccentric cam and the drive shaft had to be arranged in an internal region where the winding case and the energy storage case defined. This is because the hoist case is slid by the eccentric cam, and the accumulator case is slid by the rod attached to the eccentric cam. Then, on the base on which the energy storage mechanism is placed, the crank and the catch are disposed in the lower layer, the eccentric cam and the drive shaft are disposed in the upper layer, and the respective members are stacked. It was a factor that increased.
- An embodiment of the present invention is proposed in order to solve the above-described problem, and includes an energy storage mechanism that has a forcible input mechanism and realizes space saving, and a load-time tap switching device including the same.
- the purpose is to provide.
- the energy storage mechanism of the embodiment is included in the on-load tap switching device, and is a mechanism that receives a driving force from the electric operation mechanism and performs switching operation of the cutoff mechanism.
- the on-load tap switching device of the embodiment includes an energy storage mechanism, an electric operation mechanism that drives the energy storage mechanism, and a shut-off mechanism that is switched by the energy storage mechanism, and has the following characteristics.
- It has a crank that contacts the energy storage case and rotates in conjunction with the slide of the energy storage case.
- It has a drive rod which is provided coaxially with the crank and transmits the rotational force to the shut-off mechanism.
- FIG. 1 is a perspective view showing an example of the on-load tap switching device according to the present embodiment.
- FIG. 2 is a perspective view showing the configuration of the energy storage mechanism 2, where (a) is a view from above and (b) is a view from below.
- FIG. 3 is an exploded view of the energy storage mechanism 2.
- FIG. 4 is an exploded view of the forcing mechanism.
- the on-load tap switching device 1 shown in FIG. 1 is a device that switches the voltage while applying a load current to the transformer.
- the accumulating mechanism 2, the drive shaft 4, the drive rod 5, the vacuum valve 6, and the switching switch 7. Is provided.
- the drive shaft 4 is rotated by an electric operation mechanism (not shown).
- An eccentric cam 22 provided in the energy storage mechanism 2 is fixed to the drive shaft 4, and the eccentric cam 22 converts the rotational force of the drive shaft 4 into a linear motion and transmits it to the energy storage mechanism 2.
- the energy storage mechanism 2 stores and releases the coil spring 26 (see FIG. 2) using the force received from the eccentric cam 22.
- the energy storage mechanism 2 has a crank 30 (see FIG. 2) fixed to the drive rod 5, and rotates the drive rod 5 by releasing the coil spring 26.
- the vacuum valve 6 is opened and closed by the rotation of the drive rod 5, and the switching switch 7 selects an energizing contact by the rotation of the drive rod 5.
- the plate-like base 2 a is provided with a winding case 24 and an energy storage case 27.
- Each of the winding case 24 and the energy storage case 27 is a rectangular frame.
- the extending directions of the side edges of the winding case 24 and the energy storage case 27 are the same, and the winding case 24 is slightly larger than the energy storage case 27 and covers the energy storage case 27.
- the base 2a has two shafts 25 extending in parallel. These shafts 25 are orthogonal to one opposing edge of the winding case 24. A flange 24c through which the shaft 25 passes is protruded from the winding case 24 at a position where the shaft 25 and the frame intersect.
- two shafts 28 are further extended in parallel with the shaft 25 on the base 2a.
- the shaft 28 is orthogonal to one opposing edge of the energy storage case 27.
- the frame of the energy storage case 27 is higher than the diameter of the shaft 25, and the shaft 28 penetrates the frame of the energy storage case 27.
- winding case 24 is slidably supported on the shaft 25, and the energy storage case 27 is slidably supported on the shaft 28.
- the sliding direction S of the winding case 24 and the energy storage case 27 is a direction along the shafts 25 and 28.
- a portion of the frame of the energy storage case 27 corresponding to the flange 24c of the winding case 24 is formed with a piercing portion 27a that is slightly larger than the flange 24c, and the slide of the winding case 24 is the energy storage case. 27 is not disturbed.
- a coil spring 26 is attached along the slide direction S in an internal region where the winding case 24 and the energy storage case 27 are defined.
- the coil spring 26 is supported by the shaft 25, and the shaft 25 passes through the inside of the coil spring 26.
- the natural length of the coil spring 26 is substantially the same as the width of the winding case 24 and the energy storage case 27.
- flanges 26a that are slightly larger than the punched-through portion 27a are provided. Therefore, when the winding case 24 and the energy storage case 27 exist at the same position, both ends of the coil spring 26 abut on the frames of the winding case 24 and the energy storage case 27.
- a crank 30 is provided on the base 2 a in the inner region of the energy storage case 27.
- a roller 30a is projected from the crank 30 at a position off the rotation shaft.
- the roller 30 a protrudes from the bottom surface of the energy storage case 27 to the inside.
- a block 29A and a block 29B that clamp the roller 30a from the sliding direction S are fixed to the bottom surface of the energy storage case 27. Therefore, the energy storage case 27 and the crank 30 operate in conjunction with each other.
- the drive rod 5 which penetrated the base 2a is being fixed to the rotating shaft of the crank 30, and the drive rod 5 also rotates in conjunction with the crank 30.
- the crank 30 has a fan shape, a main part is a rotating shaft, and a roller 30a is attached to the fan surface.
- the central region including the center of the arc line is raised by one step in the radial direction compared to both ends of the arc line. That is, step portions 30b and 30c are formed at the boundary between the center region and both ends, and the step portion 30b and the step portion 30c have a step that rises one step from the end of the crank 30 toward the center of the arc line.
- a catch 31A that engages with the step portion 30b and a catch 31B that engages with the step portion 30c are provided on the base 2a.
- the catch 31A and the catch 31B are arranged symmetrically with respect to a line connecting the center of the arc of the crank 30a and the rotation axis, the catch 31A has a substantially L shape, and the catch 31B , L has an inverted character shape.
- One of the arms of the catch 31A and the catch 31B is opposed to each other.
- One arm of the catch 31A extends in the direction of the step 30b of the crank 30, and the one arm of the catch 31B is the step 30c of the crank 30. It extends in the direction of.
- the other arms of the catch 31 ⁇ / b> A and the catch 31 ⁇ / b> B that extend substantially in parallel are connected by a tension spring 37.
- the catch 31A and the catch 31B have a rotation shaft at each bent portion, and can swing.
- the winding case 24 is provided with a release claw 24a and a release claw 24b that can come into contact with the arms 31A and 31B at a side edge portion orthogonal to the substantially extending arms.
- the tripping claw 24 a jumps up the catch 31 ⁇ / b> A around the rotation axis and releases the engagement between the catch 31 ⁇ / b> A and the step portion 30 b of the crank 30.
- the tripping claw 24b jumps up the catch 31B around the rotation shaft and releases the engagement between the catch 31B and the step portion 30b of the crank 30.
- the eccentric cam 22 for sliding the winding case 24 is provided outside the internal region where the winding case 24 and the energy storage case 27 are defined.
- the eccentric cam 22 is fixed to the drive shaft 4 and rotates along with the rotation of the drive shaft 4.
- the eccentric cam 22 has an outer shape in which a cam crest protrudes from a part of a circumference concentric with a rotation shaft to which the drive shaft 4 is fixed.
- the eccentric cam 22 is formed by a disk and a block having a cam crest.
- the drive shaft 4 is fixed to the center of the disk, the block is fixed to the surface of the disk, and the cam crest portion protrudes radially from the outer periphery of the disk.
- the eccentric cam 22 and the winding case 24 are connected via a swing joint 23 having a fixed length.
- One end of the swing joint 23 is connected to the apex of the cam crest, and can swing in parallel with the rotation surface of the eccentric cam 22.
- the other end of the swing joint 23 is connected to a side edge perpendicular to the slide direction S of the winding case 24 and can swing in parallel with a plane including the winding case 24.
- the eccentric cam 22 has a gear 21.
- the gear 21 is a disc portion of the eccentric cam 22 and is a spur gear or a helical gear in which a large number of teeth are formed along the outer peripheral surface.
- the intermediate gear 32 having a parallel axis with the gear 21 is meshed with the gear 21.
- the intermediate gear 32 is formed by a pair of spur gears or helical gears fixed to both ends of the shaft.
- One gear is located on the upper surface of the base 2a and meshes with the gear 21, and the other gear is below the base 2a. positioned.
- a gear 33 located below the base 2a is engaged with a gear 33 having a parallel axis with the gear 21 or the intermediate gear 32.
- the gear 33 is a spur gear or a helical gear, and has the same number of teeth as the gear 21 of the eccentric cam 22. Note that the rotation shafts of the gear 21, the intermediate gear 32, and the gear 33 are arranged in a straight line.
- the gear 33 has a cam mechanism and is engaged with a slider 34 serving as a cam follower. That is, a cam groove 33 a is formed on the surface of the gear 33.
- the cam groove 33a is formed concentrically around the rotation axis of the gear 33, and is a cam crest in which a part of the path is continuously separated from the rotation axis.
- the slider 34 is a plate-like member, and is provided with a pin 34a at one end.
- the pin 34 a protrudes from the surface of the slider 34 and is slidably fitted into the cam groove 33.
- the sliding direction of the slider 34 is a direction away from the crank 30.
- the swing joint 23 and the winding case 24 are orthogonal to each other so that the pushing amount of the coil spring 26 by the winding case 24 is maximized.
- the position of the groove 33a and the height of the cam crest are set.
- a lever 35 is rotatably connected to the slider 34 via a pin 35a.
- the pin 35 a is located at one end of the lever 35 that is off the rotational axis of the lever 35.
- an extrusion pin 35b is provided at the other end of the lever 35.
- the push pin 35b rotates in a direction approaching the crank 30 because the connecting portion of the lever 35 to the slider 34 rotates in a direction away from the crank 30 as the slider 34 slides.
- the push pin 35b of the lever 35 is in contact with one end of the slider 36.
- the slider 36 is disposed on the crank 30 side with respect to the push pin 35 b of the lever 35, and extends along the tangential direction outside the crank 30.
- the slider 36 is formed with an engaging portion 36b at the end on the push pin 35b side.
- the engaging portion 36 b has a U shape whose opening faces the push pin 35 b, and the opening is dug in the length direction of the slider 36.
- the engaging portion 36b is in contact with the push pin 35b at the deepest portion of the opening. Therefore, when the lever 35 rotates and the push pin 35b rotates to the crank 30 side, the slider 36 moves on the crank 30 side.
- the slider 36 is a member that rotates the crank 30 by moving. That is, the slider 36 has a U-shaped engaging portion 36c that opens to the crank 30 side.
- the crank 30 has a support holder 30d extending to the inside of the opening of the engaging portion 36c.
- the support holder 30d is a protrusion that is fitted to the drive shaft 5 that is the rotation shaft of the crank 30 and protrudes from the crank 30 so as to be orthogonal to the drive shaft 5, and is included in the opening of the engagement portion 36c. It is in contact with both sides of 36c. Therefore, when the slider 36 is moved, the support holder 30d is also moved, and the moving force of the support holder 30d is converted into a rotational force so that the crank 30 is rotated.
- the arrangement positions of the slider 34, the lever 35, and the slider 35 are determined so that the rotation direction of the crank 30 coincides with the sliding direction S of the energy storage case 27.
- a pair of sliders 34, levers 35, and sliders 36 are provided symmetrically about a line connecting the rotation axes of the crank 30 and the gear 21 of the eccentric cam 22.
- the cam crest height of the cam groove 33a is set such that when the crank 30 is rotated to the maximum angle, the accumulator case 27 slides over the winding case 24 and the coil spring 26 extends slightly beyond the natural length.
- the cam crest 33a height of the cam groove 33 and the range of the step portions 30b and 30c of the crank 30 are such that when the crank 30 is rotated to the maximum angle, the catches 31A and 31B are moved to the step portions 30b and 30c of the crank 30.
- the stepped portions of the stepped portions 30b and 30c and the tip of the crank 30 are set so as to be separated by a certain distance.
- FIGS. 5 to 8 show the operation of the energy storage mechanism 2 in chronological order
- FIG. 5 shows the first state during the operation of the energy storage mechanism 2
- FIG. 6 shows the second state
- FIG. 7 shows the third state
- FIG. 8 shows the final state during the operation of the energy storage mechanism 2.
- the energy storage case 27 is immovable because the roller 30a cannot be moved by the block 29B because the catch 30A stops the crank 30 by contacting the step 30b. Therefore, the other end of the coil spring 26 remains in contact with the side edge of the energy storage case 27 and remains stationary. That is, the coil spring 26 is contracted between the winding case 24 and the accumulating case 27 and enters an accumulating state.
- the block 29B pushes and moves the roller 30a.
- the roller 30a moves in the circumferential direction of the crank 30, the crank 30 rotates axially.
- the drive rod 5 starts rotating.
- the forced input mechanism side operates as follows while the coil spring 26 is stored and released. That is, the gear 21 rotates with the rotation of the eccentric cam 22, and the gear 33 also rotates through the intermediate gear 32 that has been engaged. As the gear 33 rotates, the pin 34a of the slider 34 slides in the cam groove 33a.
- the pin 34a of the slider 34 reaches the bottom of the cam crest of the cam groove 33a when the tripping claw 24a jumps up the catch 31A and the engagement between the catch 31A and the crank 30 is released. As the eccentric cam 22 further rotates, the pin 34a of the slider 34 slides in the cam groove 33a toward the top of the cam crest.
- the energy storage case 27 slides beyond the position where it coincides with the winding case 24, and the coil spring 26 is moved to the winding case 24 and the energy storage case 27. It is contracted between and becomes a stored state.
- the accumulating case 27 that has been slid beyond the position that coincides with the winding case 24 returns to the position that coincides with the winding case 24 due to the extending action of the contracted coil spring 26.
- the block 29A pushes back the roller 30a, and the crank 30 rotates in the reverse direction. Due to the reverse rotation of the crank 30, the catch 31B comes into contact with the stepped portion of the stepped portion 30c, and the crank 30 is prevented from rotating by the catch 31B.
- the eccentric cam 22 is provided outside the inner region, and is connected to the winding case 24 from the outside via the swing joint 23.
- the eccentric cam 22 is rotated by an electric operation mechanism so that the winding case 24 is slid through the swing joint 23.
- the eccentric cam 22 does not need to be overlapped with the crank 30, the catch 31A, and the catch 31B, the thickness of the energy storage mechanism 2 can be reduced, and space saving of the on-load tap switching device 1 can be achieved. it can.
- the gear 21 having teeth concentrically formed with the rotation locus of the eccentric cam 22 and the gear 21 rotate to linearly move in the rotational tangential direction of the crank 30 and the crank 30 and the support holder 30d. It is comprised by the slider 36 connected via.
- a gear 33 is disposed on the back side of the energy storage case 27, and the rotation of the gear 21 is transmitted to the gear 33.
- the gear 33 is provided with a cam groove 33a.
- the cam groove 33a is formed around the rotation axis of the gear 33, and has a cam crest partly spaced from the rotation axis.
- a slider 34 having a pin 35 a that slides in the cam groove 33 a is provided, and is linearly moved with the rotation of the gear 33.
- One end of a lever 35 is connected to the slider 34, and the lever 35 is swung along with the linear motion of the slider 34. The slider 36 is pushed out by the other end of the lever 35 so that the slider 36 is linearly moved. To do.
- the forced input mechanism can be provided using the dead space on the back side of the energy storage case 27, the height and volume of the on-load tap switching device 1 are not impaired even if the forced input mechanism is provided.
- the forced input mechanism further includes an intermediate gear 32 that meshes with the gear 21 and the gear 33, the gear 21 and the gear 33 have the same number of teeth, and the shafts of the gear 21, the intermediate gear 32, and the gear 33 are straight. It was arranged on the line. As a result, the load direction is evenly divided in the 180 degree direction without impairing the reversibility of the operation depending on the rotation direction of the switching switch 7.
Abstract
Description
(1)バネを有する。
(2)バネの一端と当接するとともに、バネの縮み方向にスライド可能な巻上げケースを有する。
(3)バネの他端と当接するとともに、バネの伸び方向にスライド可能な蓄勢ケースを有する。
(4)蓄勢ケースと当接し、蓄勢ケースのスライドと連動して軸回転するクランクを有する。
(5)クランクと同軸に設けられ、遮断機構に回転力を伝達する駆動ロッドを有する。
(6)巻上げケースがバネを圧縮するまで蓄勢ケース及びクランクを制止させるキャッチを有する。
(7)バネ、巻上げケース、蓄勢ケース、及びキャッチが収容される領域の外側に設けられ、巻上げケースに外部から揺動継手を介して連結し、電動操作機構によって回転されることにより、揺動継手を介して巻上げケースをスライドさせる偏芯カムを有する。
(8)偏芯カムの回転動作に連動して前記クランクを直接回転させる強制投入機構を有する。
(1)バネを有する。
(2)バネの一端と当接するとともに、バネの縮み方向にスライド可能な巻上げケースを有する。
(3)バネの他端と当接するとともに、バネの伸び方向にスライド可能な蓄勢ケースを有する。
(4)蓄勢ケースと当接し、蓄勢ケースのスライドと連動して軸回転するクランクを有する。
(5)クランクと同軸に設けられ、遮断機構に回転力を伝達する駆動ロッドを有する。
(6)巻上げケースがバネを圧縮するまで蓄勢ケース及びクランクを制止させるキャッチを有する。
(7)バネ、巻上げケース、蓄勢ケース、及びキャッチが収容される領域の外側に設けられ、巻上げケースに外部から揺動継手を介して連結し、電動操作機構によって回転されることにより、揺動継手を介して巻上げケースをスライドさせる偏芯カムを有する。
(8)偏芯カムの回転動作に連動して前記クランクを直接回転させる強制投入機構を有する。
まず、本実施形態に係る負荷時タップ切換装置及びその蓄勢機構について図1乃至4を参照しつつ、詳細に説明する。図1は、本実施形態に係る負荷時タップ切換装置の一例を示す斜視図である。図2は、蓄勢機構2の構成を示す斜視図であり、(a)は上側から、(b)は下側から見た図である。図3は、蓄勢機構2の分解図である。図4は、強制投入機構の分解図である。
以上のような蓄勢機構2の作用について図5乃至8を参照しつつ詳細に説明する。図5乃至8は、蓄勢機構2の動作を時系列順に示し、図5は、蓄勢機構2の動作中における最初の状態、図6は第2番目の状態、図7は第3番目の状態、図8は、蓄勢機構2の動作中における最後の状態を示す。
以上のように、本実施形態に係る蓄勢機構2において、偏芯カム22は、内部領域の外側に設けられ、巻上げケース24に外部から揺動継手23を介して連結する。この偏芯カム22は、電動操作機構によって回転されることにより、揺動継手23を介して巻上げケース24をスライドさせるようにした。これにより、偏芯カム22は、クランク30やキャッチ31Aやキャッチ31Bと重ねる必要はなくなり、蓄勢機構2の厚みを薄くすることができ、負荷時タップ切換装置1の省スペース化を図ることができる。
本明細書においては、本発明に係る実施形態を説明したが、この実施形態は例として提示したものであって、発明の範囲を限定することを意図していない。この実施形態は、その他の様々な形態で実施されることが可能であり、発明の範囲を逸脱しない範囲で、種々の省略や置き換え、変更を行うことができる。この実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。
2 蓄勢機構
2a ベース
21 ギア
22 偏芯カム
23 揺動継手
24 巻上げケース
24a 引き外し爪
24b 引き外し爪
24c フランジ
25 シャフト
26 バネ
26a 鍔
27 蓄勢ケース
27a 刳り貫き部
28 シャフト
29A ブロック
29B ブロック
30 クランク
30a ローラ
30b 段部
30c 段部
30d サポートホルダ
31A キャッチ
31B キャッチ
32 中間ギア
33 ギア
33a カム溝
34 スライダ
34a ピン
35 レバー
35a ピン
35b 押出しピン
36 スライダ
36b 係合部
36c 係合部
37 引っ張りバネ
4 駆動軸
5 駆動ロッド
6 真空バルブ
7 切換開閉器
Claims (8)
- 負荷時タップ切換装置に含まれ、電動操作機構から駆動力を受けて遮断機構の切換動作を行う蓄勢機構であって、
バネと、
前記バネの一端と当接するとともに、前記バネの縮み方向にスライド可能な巻上げケースと、
前記バネの他端と当接するとともに、前記バネの伸び方向にスライド可能な蓄勢ケースと、
前記蓄勢ケースと当接し、前記蓄勢ケースのスライドと連動して軸回転するクランクと、
前記クランクと同軸に設けられ、前記遮断機構に回転力を伝達する駆動ロッドと、
前記巻上げケースが前記バネを圧縮するまで前記蓄勢ケース及び前記クランクを制止させるキャッチと、
前記バネ、前記巻上げケース、前記蓄勢ケース、及び前記キャッチが収容される領域の外側に設けられ、前記巻上げケースに外部から揺動継手を介して連結し、前記電動操作機構によって回転されることにより、前記揺動継手を介して前記巻上げケースをスライドさせる偏芯カムと、
前記偏芯カムの回転動作に連動して前記クランクを直接回転させる強制投入機構と、
を備えること、
を特徴とする蓄勢機構。 - 前記強制投入機構は、
前記偏芯カムの回転軌跡と同心円状に歯が穿設されたギアと、
前記ギアの回転によって前記クランクの回転接線方向に直線運動するとともに、前記クランクと連結されるスライダと、
を備えること、
を特徴とする請求項1記載の蓄勢機構。 - 前記強制投入機構は、
前記蓄勢ケースの裏側に配置され、前記ギアの回転が伝達されて駆動する第2のギアと、
前記第2のギアの回転軸回りに形成され、一部領域が当該回転軸から連続的に離れるカム山を有するカム溝と、
前記カム溝内を摺動するピンを有し、前記第2のギアの回転に伴って直線運動する第2のスライダと、
一端が前記第2のスライダと連結され、他端が前記スライダに連結され、前記第2のスライダの直線運動に伴って揺動し、前記スライダを直線運動させるレバーと、
を更に備えること、
を特徴とする請求項2記載の蓄勢機構。 - 前記強制投入機構は、
前記ギアと前記第2のギアとに噛み合う第3のギアを更に備え、
前記ギアと前記第2のギアの歯数は同一であり、
前記ギアと前記第3のギアと前記第2のギアの各軸は、一直線上に配置されていること、
を特徴とする請求項3記載の蓄勢機構。 - 蓄勢機構と、当該蓄勢機構を駆動させる電動操作機構と、前記蓄勢機構によって切り換えられる遮断機構とを有する負荷時タップ切換装置であって、
前記蓄勢機構は、
バネと、
前記バネの一端と当接するとともに、前記バネの縮み方向にスライド可能な巻上げケースと、
前記バネの他端と当接するとともに、前記バネの伸び方向にスライド可能な蓄勢ケースと、
前記蓄勢ケースと当接し、前記蓄勢ケースのスライドと連動して軸回転するクランクと、
前記クランクと同軸に設けられ、前記遮断機構に回転力を伝達する駆動ロッドと、
前記巻上げケースが前記バネを圧縮するまで前記蓄勢ケース及び前記クランクを制止させるキャッチと、
前記バネ、前記巻上げケース、前記蓄勢ケース、及び前記キャッチが収容される領域の外側に設けられ、前記巻上げケースに外部から揺動継手を介して連結し、前記電動操作機構によって回転されることにより、前記揺動継手を介して前記巻上げケースをスライドさせる偏芯カムと、
前記偏芯カムの回転動作に連動して前記クランクを直接回転させる強制投入機構と、
を備えること、
を特徴とする負荷時タップ切換装置。 - 前記強制投入機構は、
前記偏芯カムの回転軌跡と同心円状に歯が穿設されたギアと、
前記ギアの回転によって前記クランクの回転接線方向に直線運動するとともに、前記クランクと連結されるスライダと、
を備えること、
を特徴とする請求項5記載の負荷時タップ切換装置。 - 前記強制投入機構は、
前記蓄勢ケースの裏側に配置され、前記ギアの回転が伝達されて駆動する第2のギアと、
前記第2のギアの回転軸回りに形成され、一部領域が当該回転軸から連続的に離れるカム山を有するカム溝と、
前記カム溝内を摺動するピンを有し、前記第2のギアの回転に伴って直線運動する第2のスライダと、
一端が前記第2のスライダと連結され、他端が前記スライダに連結され、前記第2のスライダの直線運動に伴って揺動し、前記スライダを直線運動させるレバーと、
を更に備えること、
を特徴とする請求項6記載の負荷時タップ切換装置。 - 前記強制投入機構は、
前記ギアと前記第2のギアとに噛み合う第3のギアを更に備え、
前記ギアと前記第2のギアの歯数は同一であり、
前記ギアと前記第3のギアと前記第2のギアの各軸は、一直線上に配置されていること、
を特徴とする請求項7記載の負荷時タップ切換装置。
Priority Applications (6)
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AU2012310602A AU2012310602B2 (en) | 2011-09-20 | 2012-09-19 | On-load tap changer and accumulator mechanism |
EP12833154.3A EP2760034B1 (en) | 2011-09-20 | 2012-09-19 | On-load tap changing device and energizing mechanism thereof |
CN201280031245.XA CN103620711A (zh) | 2011-09-20 | 2012-09-19 | 负载时抽头切换装置及其蓄能机构 |
RU2014115724/07A RU2014115724A (ru) | 2011-09-20 | 2012-09-19 | Устройство переключения отводов под нагрузкой и механизм аккумулятора |
US14/345,457 US20150001053A1 (en) | 2011-09-20 | 2012-09-19 | On-load tap changer and accumulator mechanism |
BR112014006022A BR112014006022A2 (pt) | 2011-09-20 | 2012-09-19 | mecanismo acumulador e seletor de derivação em carga |
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JP2011204022A JP5971674B2 (ja) | 2011-09-20 | 2011-09-20 | 負荷時タップ切替装置、及びその蓄勢機構 |
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CN112216540A (zh) * | 2020-09-25 | 2021-01-12 | 吴天明 | 一种手动连杆触碰开关 |
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JP5677163B2 (ja) | 2011-03-28 | 2015-02-25 | 株式会社東芝 | 強制投入機構付きの蓄勢機構及び負荷時タップ切換装置 |
DE102015103928B4 (de) | 2015-03-17 | 2021-11-04 | Maschinenfabrik Reinhausen Gmbh | Energiespeicher für einen Laststufenschalter sowie Laststufenschalter mit Energiespeicher |
CN109755052B (zh) * | 2019-01-29 | 2024-02-02 | 上海西门子高压开关有限公司 | 接地开关装置 |
JP7119226B2 (ja) * | 2019-05-30 | 2022-08-16 | 株式会社東芝 | 負荷時タップ切換器の切換開閉器および負荷時タップ切換器 |
EP3758035B1 (en) * | 2019-06-25 | 2023-08-02 | Hitachi Energy Switzerland AG | Single-phase diverter switch for column-type on-load tap changer |
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- 2012-09-19 RU RU2014115724/07A patent/RU2014115724A/ru not_active Application Discontinuation
- 2012-09-19 CN CN201280031245.XA patent/CN103620711A/zh active Pending
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Cited By (2)
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CN112216540B (zh) * | 2020-09-25 | 2023-05-09 | 国网江苏省电力有限公司南通市海门区供电分公司 | 一种手动连杆触碰开关 |
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JP5971674B2 (ja) | 2016-08-17 |
RU2014115724A (ru) | 2015-10-27 |
AU2012310602A1 (en) | 2014-04-03 |
BR112014006022A2 (pt) | 2017-04-04 |
EP2760034B1 (en) | 2016-05-18 |
US20150001053A1 (en) | 2015-01-01 |
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