TW407387B - Shutter apparatus of enclosed switchgear - Google Patents

Abstract

This invention provides a kind of shutter apparatus of enclosed switchgear, this device enables to reduce the driving force for the shutter plate to open or to shut the breaking part, to prevent from producing the uneasy motion for opening and shutoff of the breaking part due to the increase of long-term frictions. This shutter apparatus is to link the connection rod to a rod piece that can be moved simultaneously with the position of electrical machinery and to push upward or press downward for the shutter plate, and make the linkage rod to penetrate through the opening of the shutter plate with two supportive shutter plates; a roller is installed in the front end of linkage rod, to allow the roller being moved upward/downward along the guider, and a roller is also installed on the shutter plate to enable the roller to move up and down along the guiding rail side, and to make it actuated in order to open or to shut the breaking part.

Description

V. Description of the invention (1) The technical field to which the invention belongs The present invention relates to a method for opening or covering a disconnection section to be connected or disconnected when an electric device such as a circuit breaker provided in a lockout switchboard is advanced and pulled out. Shutter appatatus. (Note · "Circuit Breaker" in this article is Circuit Breaker, the Japanese is "Disconnecting Section" is Disconnecting Portion, and Japanese is the Circuit Breaking Section. Known technology is generally housed in the circuit breaker in the lockout switchboard. Make maintenance inspection work easier. It can be used as a pull-out structure that can be pushed in and pulled out from the front of the storage room to engage and disengage the disconnected part located behind the storage room. The lock-out switchboard of the type circuit breaker is provided with a blocking plate for covering the front surface of the disconnecting portion to prevent the charging portion of the disconnecting portion from being exposed to the outside when the earth circuit breaker is pulled out; Corresponding to the pulling or pushing operation of the circuit breaker, the breaking part is closed when being pulled out, and the breaking part is opened when being pushed. As described above, the blocking device for opening and closing the blocking plate is as good as As disclosed in Japanese Patent Laid-Open Publication Nos. 5 2-8 5 3 4 2 and Japanese Patent Laid-Open Publication No. 5 4-71345. In these conventional devices, the opening and closing parts of the shutter are opened and closed in a vertical direction. With a certain insulation distance Installation. The closing device disclosed in JP 5 2-8 5 3 4 2 is a system in which a shutter plate for opening and closing the upper and lower disconnecting sections is assembled between the two disconnecting sections when opened. Structure; the closing device disclosed in JP 54-7 1 345 is set to pull the upper closing plate upwards and push the lower closing plate downwards to open separately

_4072¾ .____ 5. Description of the invention (2) Structure of each disconnected part. The latter structure can be applied to the case where the distance between the upper and lower disconnecting sections is short, so it is often used. As described above, the closing device is configured for each of the upper and lower shutter plates, and the lever or link mechanism for pushing the shutter plates up and down is operated when the circuit breaker is pushed in order to engage the disconnection portion. The action of the aforementioned lever or link mechanism caused by contact with a part of the circuit breaker causes the shutter to move and open the disconnection part; on the other hand, when the disconnection part is interrupted (power off) When the circuit breaker is pulled out, the closing plate is moved by the action of the lever or link mechanism that is caused by the release of the contact action to close the disconnecting portion. Figures 9 and 10 are side views showing typical structures of a blocking device having a blocking plate that must be pushed upward when the disconnection portion is opened. As shown in the figure, the pull-out type circuit breaker 1 is mounted on a trolley 10, and is accommodated in the circuit breaker room 2 in such a manner that it can move with the trolley in the front-rear direction (left-right direction in the figure). A pair of disconnecting portions 21 and 22 are provided on the rear wall 20 of the circuit breaker room 2 at a certain insulation distance. When the circuit breaker i in the circuit breaker room 2 is advanced to the engagement position as shown in FIG. 9, That is, due to the engagement of the contacts 11 and 12 protruding to the rear surface of the circuit breaker 1, the disconnecting portions 21 and 22 are connected (connected and energized); when the circuit breaker 1 is pulled out to the state shown in FIG. 10 When in the electric position, it is the front position of the disconnection part 21 above the disconnection due to the disengagement of the above-mentioned contactors U, 12, and the shutter support lever 30, which can be moved freely along the guide pin 23, is provided. The uppermost part of the plate is provided with a shielding plate 3a. 'f The lower part of the shutter support rod 30 is connected to the connecting rod 4 by

Description of the invention (3) 4〇73b7 ~ " " A pole 5 on the side of one of the moving paths of the circuit breaker 1. The blocking lever 5 is supported by the supporting shaft 51 and can be freely rocked by a blocking piece 50 fixed at one end thereof, and is provided on one side of the moving path of the circuit breaker 1 and extends forward and backward. The rear end is connected via It is connected to the shutter support lever 30 by the link 4. A slightly rearward part of the supporting shaft 51 of the blocking piece 50 is provided with a blocking tip 52 protruding toward the moving path of the circuit breaker 1. Push plate 13. As shown in FIG. 9, when the circuit breaker 1 is in the engaged position (power-on state) as shown in FIG. 9, the push plate 13 provided on the circuit breaker 丨 blocks the above-mentioned stopper tip 52 from below to become In the state of pushing the gear tip 52 upward, due to the push-up action, the gear lever 5 is swung around the support shaft 51 as a center, and the rear end thereof is pushed upward into a tilted state. The shutter support lever 30 is upwardly pushed upward, and the shutter 3a fixed to the shutter support lever 30 is opened above the circuit breaker chamber 2 and the separation section 21 is opened to become a road as shown in the figure.

The state where the rear contactor 11 is engaged (energized). I In the above state, when the circuit breaker i is pulled out to a position like a flute, with the pull-out action, the push plate is connected to the blocking tip 52. The blocking tip 52 bis = the result is blocked. The plate support rod 30 and the fixed support # are lost when used, and the plate 3a is down due to its own weight; the m plate support rod 30 is closed and the front cover is closed, and the disconnection portion 21 is closed. : On the other side of the disconnection section 21, the blocking lever 5 will follow the cover and work together with the connecting link 4 due to the lowering of the Taiwen Wende Cup 30, and the weight of the shaft will be supported by the shaft 51. as a center

C: \ ProgramFiles \ Patent \ 310151.ptd Page 6 5 'Explanation of the invention (4) Make the back end of the invention can be solved in the next invention To solve the above action, the sliding movement of the guide is used to block the drive. Problems caused by increased force. In addition, the plate supporting lever 30 is inclined, and the driving force of the supporting lever 30 and the components of the present invention closes the device so that the push-down is achieved, and the relevant application device that maintains the problem for a long period of time is a component or a link machine— 4m & 2__ Shake down, and follow this shaking action to push the breaker 1 and the closing device described in the subject, because the wiper 23 and the shutter support rod 30 are wiped, the breaker 1 The board support bar 30 and the shutter plate 3a 'cause the opening or closing of the disconnection part that cannot be made smooth. Without the cover, the guide pin 23 cannot be maintained, and it is impossible to reduce the clearance because of the action of the disconnection part. The sliding means please be patented to be connected to the connecting plate 3a of the structure. The closing plate 3a is used to increase the friction between the closing plate 3a and the upper and lower movements. Covering the one-sided solid body has a large level of weight and must be smooth, and the closed support rod is placed. The blocking tip 52 is the blocking position of the moving plate 1 3. The sliding of the closing plate supporting rod 30 for the upward and downward guide long hole 32 is pushed upward in the direction of the joint position, and it needs to be moved up and down when it is pushed up. The possibility of the disadvantages such as friction is completely fixed. Closed plate support bar 30 status, and these structural problems due to the greater choice of the closed plate. The purpose is to provide a driving force required for the upward pushing of the shielding plate and sliding friction with the guide pin, and the invention of the first range can be used to lock the upward plate of the shielding plate and the position of the electrical switchboard. The occlusion push or push down lever is connected and runs through the occlusion

407387 Five 'invention description (5) ~ ---, two coincidences to support the shutter plate, the rollers are installed in the guide rail and the rollers are also fitted to the side of the guide rail to the shutter plate f The present invention operates as it is connected to the position of the electrical equipment, = or the end of the link at the rear end of the link mechanism moves up and down in the guide rail ^, and the closing plate supported by the rod is also aligned with the link Move up and down on the side of the guide rail 'to open or close the disconnected part. f. Closure of the lock-out switchboard of the invention in item 2 of the scope of patent application = Set the roller on one side of the shutter plate supported by the link through the opening of the shutter plate in accordance with the internal width of the guide rail. Install the installation holes by staggering the distance between the mounting holes. ΪIn the present invention, the upper and lower rollers of the shutter plate penetrated by the connecting rod are installed so that the distance between the female holes is staggered to the left and right, so each roller can contact the left and right sides of the guide and can move up and down along the side of the guide rail. The closing device of the blocking switchboard related to patent application No. 3 is the closing device that needs to pull up the closing plate when closing the disconnecting part. It is overlapped in the front-to-rear direction and can be arranged up and down freely. Among the moving shutters, the lower shutters with long holes are suspended from the two sides below the shutters, and can move up and down freely. The invention related to the fourth item of the patent application is that a roller is provided on a sliding portion of a long hole that allows the pair of upper and lower shutter plates to move freely up and down. According to the invention, when the shutter plate is moved upward, the shutter plate is suspended and moved by the upper shutter plate, and the upper and lower shutter plates are overlapped with each other and pulled upward. When the shutter is moved downward, the lower shutter is blocked by a blocking sheet or the like.

C: \ ProgramFiles \ Patent \ 310151.ptd Page 8 407387 V. Description of the invention (6) After the block is stopped, the upper shutter plate will fall in a state of overlapping in the front-back direction. Embodiments of the Invention The present invention will be described in detail below with reference to diagrams showing the embodiments thereof. Figures 1 and 2 are side views showing the structure of the closing device according to the present invention. In the figure, 1 is a circuit breaker showing a pull-out type electric device. The circuit breaker 1 is housed in a circuit breaker room 2 together with a trolley 10 on which the circuit breaker is mounted, and can be moved forward and backward (the left and right directions in the figure). . The rear wall 20 of the circuit breaker chamber 2 is provided with a pair of disconnecting portions 21 and 22 at a distance of a certain insulation distance in the up-down direction, and an opening for joining is provided toward the front. On the other hand, on the rear surface of the circuit breaker 1, contactors 丨, 12 are protruded at positions opposite to each of the disconnecting sections 21, 22, and the aforementioned disconnecting sections 21, 22 are disconnected as shown in Fig. 1 When the circuit breaker 1 is advanced to the position where the circuit breaker 1 is connected, the circuit breaker 1 is engaged with the aforementioned contacts 11 and 12 to form a connection. In addition, as shown in FIG. 2, the circuit breaker 1 is pulled out to the position where the circuit breaker 1 is connected. When the circuit breaker 1 is disconnected, the contacts 11 and 12 are separated by pulling out the circuit breaker 1 to form a circuit breaker. A pair of guide rails 26 are fixed to the upper and lower disconnecting parts 21 and 22 at the front position of the rack 25. As shown in FIGS. 3 and 4 (detailed later), the guide rails 26 are in the guide rails 26. The roller 28a is provided with a tip 27 on both sides of the end portion of the through-closed connecting rod 4. The connecting rod 4 and the roller 28a are shorter than the width of the guide rail 26, but the tip 27A, which is longer than the opening width in front of the guide rail, does not fall off forward, and the lower end of the connecting rod 4 at the front is connected. And Figures 9 and 10-Unaccustomed

407387 V. Description of the invention (7) The known closing device is also connected to the blocking rod 5. The broadcasting rod 5 is provided with a blocking piece 50 at one end, and supports the # of the blocking piece 50 by the approximately horizontal support shaft 51 protruding inwardly on the side wall of the circuit breaker room 2 f. It is located near the floor surface of the circuit breaker room 2 and faces one side of the moving path of the circuit breaker 1 and extends forward and backward. The supporting shaft 51 of the aforementioned connection piece 50 is slightly rearward, and a blocking tip 5 2 is protruded toward the moving path of the circuit breaker 1, and on the same side of the circuit breaker 1, it is matched with the blocking tip 5 2 to form an upper and lower position. Location setting push plate 1 3. When the circuit breaker i is in the connection position (energized position) as shown in FIG. 1, the circuit breaker is configured in the same manner as the conventional circuit breaker shown in FIG. 9 (a). The pushing plate 13 of 1 is blocked below the blocking tip 52 from the bottom, and pushes the blocking tip 52 upward. As a result of this pushing action, the catch lever 5 is swung around the support 51 and its rear end is caused. It is in an upwardly inclined state ', so that the link 4 is pushed up, and the link 4 is such that the upper roller 28a rotates on the guide rail 26 and moves upwards. Therefore, the closing plate 3a is supported by the link 4 penetrating through its opening, and the closing plate 3a moves as the link 4 moves up and down, and the part is opened or closed. Figure 5 of the netting tip / Λ: Γ9 is used to assist the thrust force generated by the push plate 13 and the block, and to alleviate the impact of the closing plate 3a falling downward due to its own weight By. Figures 3 and 4 are eight-face view and a partially enlarged view of the closing device of the present invention. 77 C: \ ProgramFiles \ Patent \ 310151.ptd Page 10 V. Description of the Invention (8) Figure 5 is a partially enlarged view showing another embodiment. The opening on the right side of the shutter plate 33 is penetrated by a link 4 to support one side of the shutter plate. The upper and lower rollers 28b cooperate with the inner width of 6 to guide the installation distance of the rollers 28b to the left and right by A dimension to close the shutter. Plate 3a becomes horizontal. The other roller 28b is provided to prevent the shutter 3a from falling off the guide rail 26. 6 and 7 are partially enlarged views of another embodiment. Among the shutter plates 3b and 3c which are arranged to move up and down and overlap with each other, the lower shutter plate 3c with a long hole is suspended from both sides below the upper shutter plate 3b, so that it can move up and down freely. Fig. 6 shows the state in which the shutters 3b, 3c are pulled up when they are moved upward, and Fig. 7 shows the state in which the shutters 3b, 3c are overlapped when the shutters 3b, 3c are lowered. ^ Fig. 8 is a partial enlarged view showing another embodiment, and a roller 28c is provided in the long hole portion 32 of the lower closing plate 3c. The effect of the invention is as detailed above. Regarding the closing device of the lock switchboard, the moving part of the closing plate and the upper part of the connecting rod becomes rolling friction and becomes smooth. This can greatly reduce the power and prevent The opening of the shutter plate is related to the second patent application device, which can move the side of the shutter plate horizontally vertically up and down, so that it can promote the same effect as the previous one. The upper part of the engaging action part used for opening or closing is provided with rollers. Because of this, the pushing and pushing down of the shutter plate are required to move the shutter plate up and down, or the shutter switchboard of the invention is not a smooth operation of the locking switchboard. In a closed state, and no bending load will act on the connecting rod along the inner side of the guide rail.

_07387_ V. Description of the invention (9) Regarding the invention of item 3 of the patent application, the closing device of the lock-out switchboard is a method of suspending the lower closing plate with a pair of closing plates in the upper portion of the closing plate. No separate shutter support bar is required, reducing the number of components. Regarding the blocking device of the blocking switchboard concerning the invention applied for in item 4 of the patent, the rollers are arranged on the sliding portion of the lower shutter plate, so that the irregular return of the lower shutter plate can be reliably prevented. Brief description of the figures. Fig. 1 is a side view showing the structure of the closing device of the present invention. Fig. 2 is a side view showing the structure of the closing device of the present invention. Fig. 3 is a view of the cover of the present invention. A partly enlarged plan view of the closing device. Fig. 4 is an enlarged side view of a part of the closing device according to the present invention. Fig. 5 is a front view showing another embodiment of the closing device according to the present invention. Fig. 6 is a front view showing another embodiment of the closing device according to the present invention. Fig. 7 is a front view showing another embodiment of the closing device according to the present invention. Fig. 8 is a partially enlarged plan view showing another embodiment of the closing device according to the present invention. Fig. 9 is a side view showing the structure of a conventional closing device. Fig. 10 is a side view showing the structure of a conventional closing device.

C: \ ProgramFiles \ Patent \ 310151.ptd Page 12 407387 V. Explanation of the Symbols of the Invention (1) Symbols 1 Circuit breakers 3a, 3b, 3c Blocking plate 4 Connecting rod 5 Stopper rod 10 Trolley 11 '12 Contact Sub 21 '22 Breakaway 26 Guide rail 27 Tip 28a, 28b, 28c Roller

C: \ ProgramFiles \ Patent \ 310151.ptd page 13

Claims (1)

407387 6. Scope of patent application 1. A blocking device for locking a switchboard, which is a disconnecting part that is engaged or disengaged due to the movement of an electrical device, and is opened or closed by moving up and down. This device includes: an opening The shutter plate is moved up and down by the action of a link that corresponds to the position of the electric machine, and passes through the opening of the shutter plate to support the shutter plate link, the guide rail, and is installed on the aforementioned link. An end roller for moving up and down on the guide inner rail, and a roller installed on the shutter plate for moving up and down on the inner side of the guide rail. 2. A closing device for locking a switchboard is a device that opens or closes a disconnecting part that is engaged or disengaged due to the movement of an electrical machine. The device includes: a shutter, a guide rail, and a device Above and below at least one side in the width direction of the shutter plate, the rollers are installed so as to stagger in the width direction of the shutter plate in accordance with the inner width dimension of the guide rail so that the shutter plate becomes horizontal. 3. A blocking device for locking a switchboard, which is a disconnecting part that is engaged or disengaged due to the movement of an electrical machine, and is opened or closed by moving up and down. The device includes: a pair of closing plates side by side in the up-down direction , The shutters have each other C: \ ProgramFiles \ Patent \ 310151.ptd Page 14 6. Scope of Patent Application Overlapping part; Among them, the lower shutter is suspended from the upper shutter in a form that can move freely up and down. 4. For example, the blocking device for locking the switchboard in the scope of the patent application, further comprising: a blocking plate provided on at least one of a pair of upper and lower blocking plates so that the pair of upper and lower blocking plates can move freely up and down A long-hole sliding part and a roller provided on the sliding part; ’I C: \ ProgramFiles \ Patent \ 310151.ptd page 15