JP4682110B2 - Opening / closing operation device and opening / closing device used therefor - Google Patents

Description

  The present invention relates to an opening / closing operation device used for power distribution equipment and a switching device used therefor, and more specifically, an opening / closing operation comprising a lever for opening / closing a circuit breaker of the switchgear and a shaft to which the lever is fixed. The present invention relates to a device and a switchgear used therefor.

  The switchgear used in the power receiving and distribution facility includes a switch such as a circuit breaker or a disconnect switch that cuts off the connection between the power supply side and the power distribution side in order to prevent the influence of the system due to a ground fault or the like. This switch is provided with an opening / closing operation device including an operation mechanism and a driving device for enabling the movable contact to be brought into and out of contact with the fixed contact.

  The operation mechanism is generally driven by connecting the operation rod on the movable contact side connected to the movable contact side of the circuit breaker, the operation rod on the drive side on the operation shaft side of the drive device, and these operation rods. It is composed of an opening / closing operation section composed of a rotating shaft that transmits the driving force of the device to the operating rod on the movable contact side and a lever provided on the rotating shaft.

  The above-mentioned levers in the opening / closing operation part are joined and fixed to the rotating shaft by welding or the like, but in order to improve the workability and cost, the number of levers required for the hollow shaft is die-cast. There are some which constitute an opening / closing operation shaft (for example, see Patent Document 1).

Special table 2003-507842 gazette

As shown in the above-mentioned prior art, a structure in which a plurality of levers are integrally coupled in the axial direction on the outer periphery of the rotating shaft to constitute an opening / closing operation unit has an advantage in productivity and the like. However, on the other hand, there is a stagnation in the assembling property between each lever in the opening / closing operation part, the operation rod on the movable contact side of the circuit breaker, and the operation rod on the drive device side. That is,
The configuration of the switchgear device is such that, for example, one drive device is arranged on the rear side in the housing, and three circuit breakers corresponding to three phases in the left-right direction on the front side. The tip of one lever constituting this opening / closing operation part is connected to the operating rod on the drive device side via the link mechanism, and the tip of each other lever is on the movable contact side of the circuit breaker of each phase. When connecting to the operation rod, the above-mentioned conventional opening / closing operation shaft has a fixed value in the axial direction between the levers. If this occurs, the connection work between the tip of each lever and the operation rod on the movable contact side of the circuit breaker of each phase cannot be performed smoothly, and adjustment by additional work may be required.

  In addition, when the lever is damaged due to any cause in the above-described prior art opening / closing operation shaft, the entire opening / closing operation shaft including the lever is removed from the housing, and another opening / closing operation shaft is newly assembled. There is also a problem that the restoration work takes time because the replacement work is troublesome.

  The present invention has been made based on the above-described matters, and provides an opening / closing operation device that is easy to adjust and assemble, and has a good coupling strength between a lever and a shaft, and an opening / closing device using the same. With the goal.

In order to achieve the above object, a first invention is an opening / closing operation device for a switch, comprising a rotating shaft and an outer periphery of the rotating shaft provided along an axial direction of the rotating shaft. And a positioning member provided in the engagement groove between the base portions of the lever.
The second invention is characterized in that, in the first invention, a plate-like member is provided between the engaging projection of the lever and the engaging groove of the rotating shaft.

Further , the third invention is an opening / closing operation device for a switch, wherein a rotation shaft, first and second engagement grooves provided on an outer periphery of the rotation shaft along an axial direction thereof, A first lever provided on the base side with an engagement protrusion engaging with the first engagement groove without engaging with the second engagement groove; and without engaging with the first engagement groove; And a second lever provided on the base side with an engaging protrusion that engages with the second engaging groove.

Further, a fourth invention, in any one of the first to third invention, the axial dimension at the base of the lever of the engagement projection is than the axial dimension of the lever front end side of the engagement projection Is also large.
Further, the fifth invention is an opening / closing operation device for a switch, comprising a rotation shaft, an engagement groove provided on an outer periphery of the rotation shaft along an axial direction of the rotation shaft, and the engagement A lever provided on the base side with an engaging protrusion that engages with the groove, and the axial dimension of the base of the lever of the engaging protrusion is greater than the axial dimension of the lever end side of the engaging protrusion. Is also large.

According to a sixth aspect of the present invention, there is provided an opening / closing device that transmits the driving force of the driving device as an opening / closing operation of the switch by an opening / closing operation device having a lever and a rotating shaft coupled to the lever. A rotation shaft, a lever provided on the base side with an engagement protrusion that engages with an engagement groove provided along the axial direction of the outer periphery of the rotation shaft, and the engagement groove between the base portions of the lever The rotating shaft is inserted into the positioning member and is rotatably supported by a supporting shaft provided on the inner surface of the casing of the opening / closing device.

Furthermore , a seventh invention is characterized in that, in the sixth invention, the support shaft is supported in the housing by a support shaft holding body detachably fixed to the inner surface side of the housing.

  According to the opening / closing operation device of the present invention, the lever and the shaft are combined by fitting the lever into the groove provided in the axial direction on the outer periphery of the shaft. The bond strength with the shaft is also good.

  According to the switchgear of the present invention, it is easy to adjust the connection between the switchgear operating device composed of a lever and a shaft, the drive device connected to the switchgear, and the switch, and the assembly work is easy, and the replacement work is also easy. Easy. As a result, the manufacturing time is shortened, and the recoverability by shortening the replacement time is good.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an opening / closing operation device of the present invention and an opening / closing device used therefor will be described with reference to the drawings.
FIG. 1 to FIG. 6 show an embodiment of the opening / closing operation device of the present invention. FIG. 1 is a plan view of the opening / closing device equipped with an embodiment of the opening / closing operation device of the present invention. FIG. 3 is a sectional view taken along the line 3-3 of FIG. 2, FIG. 4 is a view taken along the line 4-4 of FIG. 1, and FIG. The perspective view of the rotating shaft which comprises one Embodiment of the opening / closing operation apparatus of invention, FIG. 6 is a front view which expands and shows the lever which comprises one Embodiment of the opening / closing operation apparatus of this invention. In FIG. 1, a breaker (vacuum valve) 2 for each phase is juxtaposed in the width direction (vertical direction in FIG. 1) on the front side of the casing 1 of the switchgear. On the rear surface side in the housing 1, for example, an electromagnetically operated drive device 3 is disposed. An opening / closing operation device 4 is disposed above the circuit breaker 2 and the driving device 3 in the housing 1.

  The opening / closing operation device 4 includes a rotating shaft 5, a lever 6 provided on one side of the rotating shaft 5, and a plurality of levers 7 provided on the other side of the rotating shaft 5. The tip of the lever 6 is connected to the operation rod 9 of the driving device 3 by a pin 8, and the tip of each lever 7 is connected to the operation rod 11 on the circuit breaker 2 side by a pin 10. With this connection configuration, for example, the movement of the operating rod 9 connected to the electromagnetically operated drive device 3 is transmitted to the operating rod 11 on the circuit breaker 2 side via the lever 6, the rotating shaft 5 and the lever 7, thereby 2 is opened and closed.

  As shown in FIGS. 2 and 3, the rotary shaft 5 is rotatably supported by a support shaft 13 having a flange portion inserted into the hollow hole 12 at an end portion thereof. The support shaft 13 is held by a support shaft holding body 14 disposed on the inner surface side of the housing 1. The support shaft holder 14 is detachably attached to the inner surface of the housing 1 by bolts 17 screwed into bolt holes 16 provided at the four corners of the support shaft holder 14 through the holes 15 provided in the housing 1. It is fixed.

  Therefore, by removing the bolt 15 from the housing 1, the rotating shaft 5, the support shaft 13, and the support shaft holder 14 provided with the levers 6 and 7 can be detached from the housing 1. Conversely, these can be assembled to the housing 1.

Further, as shown in FIGS. 4 and 5, the rotating shaft 5 has an engaging groove 18 formed along the axial direction on the outer peripheral surface thereof. The engagement groove 18 is provided with a protrusion 18C for preventing engagement from being released on the side of the opening 18A for making the opening 18A side smaller than the bottom 18B.
As shown in FIG. 6, the base of the levers 6 and 7 attached to the rotating shaft 5 has an engaging protrusion 19 that fits into the engaging groove 18 of the rotating shaft 5 and a contact that contacts the outer peripheral surface of the rotating shaft 5. A mating contact portion 20 is formed.

  Next, assembly and disassembly operations of the embodiment of the opening / closing operation device of the present invention described above will be described. First, the assembly operation will be described. The engaging protrusions 19 at the bases of the levers 6 and 7 are fitted into the engaging grooves 18 on one side and the other side of the rotating shaft 5 from the axial ends thereof. The mating contact portion 20 is brought into contact with the outer peripheral surface of the rotary shaft 5, and the levers 6 and 7 are moved to appropriate positions in the axial direction of the rotary shaft 5.

  Next, the support shaft 13 is assembled in advance to the support shaft holder 14, and the support shaft 13 is inserted into both ends of the rotating shaft 5. In this state, the support shaft 13 and the support shaft holding body 14 are assembled to both ends of the rotating shaft 5, so that these are integrated into the support shaft holding body 14 from the housing 1 toward the inner surface side of the housing 1. The lever 6 is inserted into the housing 1 so as to be positioned and then screwed into the bolt holes 16 provided at the four corners of the support shaft holding body 14 through the holes 15 provided in the housing 1. , 7 can be rotatably supported in the housing 1.

  Thereafter, the connection between the operation rod 9 and the lever 6 of the driving device 3 in the housing 1 and the connection between the operation rod 11 and each lever 7 on the side of each circuit breaker 2 are performed by connecting the levers 6 and 7 to the rotating shaft 5. By performing fine adjustment movement along the engagement groove 18, these connecting operations can be performed easily and simply. Further, the assembling work of the opening / closing operation device 4 is also facilitated.

  In addition, if there is a need to replace or replace only the lever whose length has been changed according to the electromagnetic force design of the drive unit or for some reason, the operation is the reverse of the assembly operation described above. Thus, the opening / closing operation device 4 can be easily detached from the casing 1 of the opening / closing device, and the levers 6 and 7 can be easily detached from the rotating shaft 5 to improve the workability.

  Further, the levers 6 and 7 and the rotating shaft 5 are provided at the engaging groove 18 of the rotating shaft 5, the engaging protrusion 19 of the levers 6 and 7 fitted therein, and the base of the levers 6 and 7. The engagement contact portion 20 that is in contact with the outer peripheral surface 5 can be firmly coupled.

  According to the embodiment of the opening / closing operation device of the present invention described above, the lever and the shaft are coupled and configured by fitting the lever into the groove provided in the axial direction on the outer periphery of the shaft. In addition, the coupling strength between the lever and the shaft is also good.

  Further, according to one embodiment of the opening / closing device of the present invention, it is easy to adjust the connection between the opening / closing operation device composed of a lever and a shaft, the driving device connected to the opening / closing device, and the switch, and the assembly work is easy. In addition, replacement work is easy. As a result, the manufacturing time is shortened, and the recoverability by shortening the replacement time is good.

FIG. 7 is a cross-sectional view showing another embodiment of the rotating shaft constituting the opening / closing operation device of the present invention. In FIG. 7, the same reference numerals as those in FIGS. 2 and 4 denote the same parts. Therefore, the detailed description is abbreviate | omitted.
In this embodiment, an arc portion 18D is formed on the distal end side of a protrusion 18C for preventing engagement from being removed provided on the rotary shaft 5. With this configuration, there is an effect of reducing the concentrated stress generated by the surface pressure applied to the edge of the engaging groove 18 of the rotating shaft 5 when the levers 6 and 7 are bent and deformed. Further, the same effects as those of the above-described embodiment can be naturally obtained.

8 and 9 show another embodiment of a rotating shaft and a lever constituting the opening / closing operation device of the present invention. FIG. 8 is a cross-sectional view of the rotating shaft, and FIG. 9 is a front view of the lever. . In these drawings, the same reference numerals as those in FIGS. 5 and 6 are the same parts, and detailed description thereof will be omitted.
In this embodiment, the shape of the engagement groove 18 provided in the rotating shaft 5 and the engagement protrusions 19 of the levers 6 and 7 fitted into the engagement groove 18 are made into a dovetail shape.

  According to this embodiment, the rotation shaft 5 and the lever 6, by the coupling of the dovetail shape between the engagement groove 18 of the rotation shaft 5 and the engagement protrusion 19 of the levers 6 and 7 and the inclination angle α thereof. 7 can be enhanced, and effects similar to those of the above-described embodiment can be obtained.

FIG. 10 is a perspective view showing another embodiment of a lever constituting the opening / closing operation device of the present invention. In this figure, the same reference numerals as those in FIG. Is omitted.
In this embodiment, the thickness T1 (the axial direction of the rotating shaft 5) of the engaging projections 19 of the levers 6 and 7 is made larger than the thickness T2 of the levers 6 and 7.

  According to this embodiment, the joining area between the engaging groove 18 of the rotating shaft 5 and the engaging protrusion 19 of the levers 6 and 7 is increased, and the coupling between the rotating shaft 5 and the levers 6 and 7 is further increased. While being able to raise, the effect similar to embodiment mentioned above can be acquired.

FIG. 11 is a perspective view showing still another embodiment of the opening / closing operation device of the present invention. In this figure, the same reference numerals as those in FIG. .
In this embodiment, the positioning member 21 is fitted into the engaging groove 18 of the rotary shaft 5 so as to be positioned between the base portions of the levers 6 and 7, and the positioning of the levers 6 and 7 in the direction of the rotary shaft 5 is ensured. is there.
In FIG. 11, only one positioning member 21 is shown for convenience of drawing, but the positioning member 21 is provided corresponding to both sides of the levers 6 and 7. Further, the positioning members 21 positioned at both side ends of the engagement groove 18 are in contact with the inner surface of the support shaft holding body 14 shown in FIGS. 1 and 2 and are prevented from coming off.

  According to this embodiment, the use of the positioning member 21 facilitates the alignment and positioning of the levers 6 and 7 in the direction of the rotary shaft 5 and can improve the assembly work. The same effect as the form can be obtained. And the shaft and the lever can be fixed.

Further, in the above-described embodiment of the present invention, as shown in FIG. 12, the bottom surface of the engagement groove 18 provided on the rotary shaft 5 and the proximal side surface of the engagement protrusion 19 of the levers 6 and 7 that abut on the bottom surface. It is also possible to drive a plate-like member 22 such as a spring material or a wedge between the two. With this configuration, it is possible to prevent rattling even when used for a long time.
The plate-like member 22 can also be provided on the positioning member 21.

It is a top view of the switchgear provided with one embodiment of the switchgear operation device of the present invention. It is a vertical section top view of a rotating shaft which constitutes one embodiment of an opening and closing operation device of the present invention. It is the figure which looked at the rotating shaft which comprises one Embodiment of the opening / closing operation apparatus of this invention from the 3-3 arrow view of FIG. It is the figure which looked at the rotating shaft and lever which comprise one Embodiment of the opening / closing operation apparatus of this invention from 4-4 arrow of FIG. It is a perspective view of the rotating shaft which comprises one Embodiment of the opening / closing operation apparatus of this invention. It is a front view which expands and shows the lever which comprises one Embodiment of the opening / closing operation apparatus of this invention. It is a cross-sectional view which shows other embodiment of the rotating shaft which comprises the opening / closing operation apparatus of this invention. It is a cross-sectional view which shows other embodiment of the rotating shaft which comprises the opening / closing operation apparatus of this invention. It is a front view which shows other embodiment of the lever which comprises the opening / closing operation apparatus of this invention. It is a perspective view which shows other embodiment of the lever which comprises the opening / closing operation apparatus of this invention. It is a perspective view which shows other embodiment of the opening / closing operation apparatus of this invention. It is a cross-sectional view which shows other embodiment of the rotating shaft which comprises the opening / closing operation apparatus of this invention, a lever, and a coupling | bond part.

Explanation of symbols

1 Switchgear housing 2 Circuit breaker (vacuum valve)
DESCRIPTION OF SYMBOLS 3 Electromagnetic operation type drive device 4 Opening and closing operation device 5 Rotating shaft 6 Lever 7 Lever 13 Support shaft 14 Support shaft holding body 17 Bolt 18 Engaging groove 19 Engagement protrusion 20 Engagement contact portion 21 Positioning member 22 Plate member

Claims (7)

An opening / closing operation device for a switch, wherein a rotation shaft , an engagement groove provided on an outer periphery of the rotation shaft along an axial direction of the rotation shaft , and an engagement protrusion engaged with the engagement groove An opening / closing operation device comprising: a lever provided with a base portion on the base side; and a positioning member provided in the engagement groove between the base portions of the lever. 2. The opening / closing operation device according to claim 1, wherein a plate-like member is provided between the engaging protrusion of the lever and the engaging groove of the rotating shaft. An opening / closing operation device for a switch, comprising: a rotation shaft; first and second engagement grooves provided on an outer periphery of the rotation shaft along an axial direction thereof; and the second engagement groove. A first lever provided on the base side with an engaging protrusion that engages with the first engaging groove without engaging, and a second lever that does not engage with the first engaging groove. An opening / closing operation device comprising: a second lever provided with a mating engagement protrusion on the base side. 4. The opening / closing operation device according to claim 1 , wherein an axial dimension of the base of the lever of the engaging protrusion is larger than an axial dimension of the engaging protrusion on the distal end side of the lever. An opening / closing operation device characterized by that. An opening / closing operation device for a switch, wherein a rotation shaft, an engagement groove provided on an outer periphery of the rotation shaft along an axial direction of the rotation shaft, and an engagement protrusion engaged with the engagement groove A lever provided on the base side, and the axial dimension of the engaging protrusion at the base of the lever is larger than the axial dimension of the engaging protrusion on the lever tip side. Operating device. In an opening / closing device that transmits a driving force of a driving device as an opening / closing operation of a switch by an opening / closing operation device having a lever and a rotation shaft coupled with the lever, the opening / closing operation device is connected to a hollow rotation shaft and the rotation A lever provided on the base side with an engagement protrusion that engages with an engagement groove provided along the axial direction of the outer periphery of the shaft, and a positioning member provided in the engagement groove between the bases of the lever ; An opening / closing device, wherein the rotating shaft is rotatably supported by a support shaft that is inserted into the rotating shaft and provided on the inner surface of the casing of the opening / closing device. 7. The switchgear according to claim 6 , wherein the support shaft is supported in the housing by a support shaft holder that is detachably fixed to the inner surface side of the housing.

Images