CN110797787A - Switch cabinet and interlocking device of switch cabinet door and circuit breaker handcart - Google Patents
Switch cabinet and interlocking device of switch cabinet door and circuit breaker handcart Download PDFInfo
- Publication number
- CN110797787A CN110797787A CN201911091021.8A CN201911091021A CN110797787A CN 110797787 A CN110797787 A CN 110797787A CN 201911091021 A CN201911091021 A CN 201911091021A CN 110797787 A CN110797787 A CN 110797787A
- Authority
- CN
- China
- Prior art keywords
- sliding block
- cabinet door
- switch cabinet
- circuit breaker
- unlocking
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
-
- 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
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention provides a switch cabinet and an interlocking device of a switch cabinet door and a circuit breaker handcart, wherein the interlocking device comprises: a fixed mount; the sliding block is movably installed on the fixing frame in a guiding mode, a stopping position and an unlocking position are arranged in the moving stroke of the sliding block, the cabinet door can be prevented from being opened when the sliding block is in the stopping position, and the cabinet door can be opened when the sliding block is in the unlocking position. Has the advantages that: the interlocking device can realize interlocking between a cabinet door of the switch cabinet and a circuit breaker handcart, and after the cabinet door is closed, the sliding block is in a stopping position, so that a stopping surface on the sliding block is in stopping fit with a matching surface on the baffle, the cabinet door cannot be opened, and the condition that a maintenance worker carelessly opens the cabinet door to cause safety hazards when the circuit breaker handcart is in a working position is prevented. When the circuit breaker handcart returns from the working position to the test position, the sliding block can move from the stopping position to the unlocking position under the pushing action force of the circuit breaker handcart pushing structure, and the cabinet door can be opened, so that the safety of maintainers is ensured.
Description
Technical Field
The invention relates to a switch cabinet and an interlocking device of a switch cabinet door and a circuit breaker handcart.
Background
With the development of national economy, the demand on direct current power supply equipment is more and more, and direct current switch equipment is adopted in many important industries such as urban trolley buses, subways, smelting, photovoltaic power generation, ship electricity, mines and the like in China at present. At the same time, the requirements for the safety performance of dc switchgear are also increasing.
In engineering application, in order to ensure personal safety of workers during maintenance and inspection, interlocking needs to be set between different elements of direct current switch equipment, for example, interlocking between a cabinet door and a circuit breaker handcart is very important, particularly when the circuit breaker handcart is in a working position, the cabinet door cannot be opened in order to ensure safety, and only when the circuit breaker returns to a test position, the cabinet door can be opened, so that how to realize reliable interlocking between the cabinet door and the circuit breaker handcart is always a hotspot of research.
Disclosure of Invention
The invention aims to provide an interlocking device which can conveniently realize the interlocking between a switch cabinet door and a circuit breaker handcart so as to ensure the safety of maintainers; the invention also aims to provide the switch cabinet which can conveniently realize the interlocking between the switch cabinet door and the circuit breaker handcart so as to ensure the safety of maintainers.
In order to realize the purpose, the interlocking device of the switch cabinet door and the circuit breaker handcart adopts the following technical scheme:
an interlock of cubical switchboard cabinet door and circuit breaker handcart includes:
the fixing frame is used for being fixed on a cabinet door of the switch cabinet;
the sliding block is movably installed on the fixed frame in a guiding manner, a stop position used for being matched with a baffle stop fixedly arranged in the switch cabinet body and an unlocking position used for releasing the stop with the baffle are arranged in the moving stroke of the sliding block, and the sliding block can prevent the switch cabinet door from being opened when being in the stop position and can prevent the switch cabinet door from being opened when being in the unlocking position;
the sliding block is provided with a stopping surface used for facing the cabinet door of the switch cabinet, and the stopping surface is used for being in stopping fit with a matching surface on the baffle when the sliding block is in a stopping position; the sliding block is also provided with an inclined surface facing the circuit breaker handcart, and the inclined surface is used for providing moving component force for the sliding block when the circuit breaker handcart is pushed by a circuit breaker handcart pushing structure in the process of returning from the working position to the test position, so that the sliding block is moved to an unlocking position from a blocking position along the fixing frame; the sliding block is also provided with a butting surface which is arranged between the stopping surface and the inclined surface and is used for butting and matching with the guide surface on the baffle plate so as to guide the sliding block to move in the opening or closing process of the switch cabinet door, so that the sliding block is temporarily positioned in the unlocking position and is switched to the stopping position after the switch cabinet door is closed in place.
The technical scheme of the interlocking device has the beneficial effects that: the slider direction is removed and is installed on the mount, can remove along the mount to have and keep off two work positions of position and unblock position, be in and keep off can prevent when stopping the position that switch cabinet door opens, switch cabinet door can open when being in the unblock position. Specifically, the sliding block is provided with a stop surface, an inclined surface and a top abutting surface, the stop surface is arranged facing the switch cabinet door and can be in stop fit with a matching surface on a baffle fixedly arranged in the switch cabinet body, so that the switch cabinet door is prevented from being opened; the inclined surface is arranged facing the circuit breaker handcart, and can be pushed by a circuit breaker handcart pushing structure in the process that the circuit breaker handcart returns from a working position to a test position, so that a moving component force is provided for the sliding block, the sliding block is moved to an unlocking position from a blocking position along the fixing frame, and a switch cabinet door can be opened; the abutting surface is located between the stopping surface and the inclined surface and is abutted and matched with the guide surface on the baffle, so that the sliding block is conveniently guided to move in the opening or closing process of the switch cabinet door, when the sliding block is moved to the unlocking position from the stopping position under the action of the pushing structure on the circuit breaker handcart, the switch cabinet door is opened, the abutting surface is slidably matched with the guide surface on the baffle, the opening of the cabinet door is facilitated, particularly when the switch cabinet door is closed, the sliding block can be firstly kept at the unlocking position under the abutting and guiding of the guide surface, and is completely closed and then switched to the stopping position, otherwise, the stopping surface of the sliding block cannot be abutted and matched with the baffle, and further cannot be normally used.
The interlocking device realizes the interlocking between the switch cabinet door and the circuit breaker handcart, and can ensure that the door of the cabinet cannot be opened by the blocking surface on the sliding block and the matching surface on the baffle in the blocking matching way through the sliding block in the blocking position after the switch cabinet door is closed, thereby preventing the safety hazard caused by careless opening of the door of the cabinet by maintainers when the circuit breaker handcart is in the working position. And when the circuit breaker handcart returns to the test position from the working position, the sliding block can move to the unlocking position from the stopping position under the pushing action force of the circuit breaker handcart pushing structure, and the cabinet door can be opened, so that the safety of maintainers is ensured.
Furthermore, in order to facilitate the processing and manufacturing of the fixing frame and the guiding installation of the sliding block, the fixing frame comprises a contact plate in contact fit with the sliding block and guide plates arranged on two opposite sides of the contact plate and used for guiding the sliding block, one of the sliding block and the guide plates is provided with a guide rod in a penetrating manner, the other one of the sliding block and the guide plates is provided with a guide long hole for the guide rod to penetrate, and the extending direction of the guide long hole is the same as the moving direction of the sliding block.
Further, for the convenience fix the mount on switch cabinet door, the other relative both sides of contact plate are provided with the fixed plate that is used for with switch cabinet door fixed connection, and the fixed plate is L shape, and the fixed plate includes the first fixed limit that links to each other with the contact plate and is used for pasting fixed second fixed limit mutually with switch cabinet door, has the interval between the first fixed limit of two fixed plates.
Further, when the circuit breaker handcart was in the work position for the convenience, run into emergency and need open the cabinet door, be provided with on the slider and be used for supplying the unblock pole to insert and force to drive the slider and move the compulsory unblock hole or the compulsory unblock groove to unblock the position by the stop displacement, it perforates in order to insert the contact plate of compulsory unblock hole or the compulsory unblock groove to be provided with on the contact plate to supply the unblock pole to pass, the fenestrate position of contact plate is corresponding with the position of compulsory unblock hole or the compulsory unblock groove on the slider, just the contact plate is perforated and compulsory unblock hole or compulsory unblock groove all are used for perforating correspondingly with the unblock pole on the cubical switchboard cabinet door, the.
Furthermore, the fixing of the fixing frame is convenient, and the cabinet door is convenient to open when the circuit breaker handcart is in the working position in case of emergency, the other two opposite sides of the contact plate are provided with fixed plates which are fixedly connected with a cabinet door of the switch cabinet, a space is arranged between the two fixed plates, the slide block is provided with a forced unlocking hole or a forced unlocking groove which is used for inserting the unlocking rod and forcibly driving the slide block to move from the stopping position to the unlocking position, the contact plate is provided with a contact plate perforation through which the unlocking rod passes to be inserted into the forced unlocking hole or the forced unlocking groove, the position of the contact plate through hole corresponds to the position of the forced unlocking hole or the forced unlocking groove on the sliding block, and the contact plate perforation and the forced unlocking hole or the forced unlocking groove are used for corresponding to the unlocking rod perforation on the switch cabinet door, and the unlocking rod movable space for the unlocking rod to pass through and driving the sliding block to move is formed at intervals.
Furthermore, in order to enable the two first fixing edges to have enough space and facilitate the unlocking rod to pass and move, the second fixing edges of the two fixing plates are arranged in an extending mode in a back-to-back mode.
Further, in order to reduce the moving friction force of the slider, the slider comprises a slider body and a bearing mounted on the slider body, and the bearing is in contact fit with the contact plate.
Furthermore, in order to simplify the structure and facilitate installation and setting, the guiding moving direction of the sliding block is the up-down direction, the blocking position of the sliding block is in the lower position, the unlocking position of the sliding block is in the upper position, and the sliding block is transited from the unlocking position to the blocking position by utilizing the self-weight.
In order to achieve the purpose, the switch cabinet adopts the following technical scheme:
the utility model provides a switch cabinet, includes the cabinet body and installs the cabinet door on the cabinet body, and the internal circuit breaker handcart of installing of cabinet still includes the interlock of switch cabinet door and circuit breaker handcart, and the interlock of switch cabinet door and circuit breaker handcart includes:
the fixing frame is fixed on the cabinet door;
the baffle is fixedly arranged in the cabinet body;
the sliding block is movably installed on the fixed frame in a guiding mode, a stopping position matched with the baffle in a stopping mode is arranged in the moving stroke of the sliding block, an unlocking position for releasing the stopping with the baffle is further arranged, the sliding block can prevent the cabinet door from being opened when the sliding block is in the stopping position, and the cabinet door can be opened when the sliding block is in the unlocking position;
the sliding block is provided with a stopping surface facing the cabinet door, and the stopping surface is used for stopping and matching with a matching surface on the baffle when the sliding block is at a stopping position; the sliding block is also provided with an inclined surface facing the circuit breaker handcart, and the inclined surface is used for providing moving component force for the sliding block when the circuit breaker handcart is pushed by a circuit breaker handcart pushing structure in the process of returning from the working position to the test position, so that the sliding block moves to an unlocking position from a blocking position along the fixing frame; the sliding block is also provided with a top abutting surface between the stopping surface and the inclined surface, and the top abutting surface is abutted and matched with the guide surface on the baffle plate so as to guide the sliding block to move in the opening or closing process of the cabinet door, so that the sliding block is temporarily positioned at an unlocking position and is switched to the stopping position after the cabinet door is closed in place.
The technical scheme of the switch cabinet has the beneficial effects that: the slider guide is moved and is installed on the mount, can remove along the mount to have and keep off two work positions of position and unblock position, be in and keep off can prevent the cabinet door to open when stopping the position, be in the unblock position the cabinet door can open. Specifically, the sliding block is provided with a blocking surface, an inclined surface and a top abutting surface, the blocking surface is arranged facing the cabinet door and can be in blocking fit with a matching surface on a baffle fixedly arranged in the cabinet body, so that the cabinet door is prevented from being opened; the inclined plane is arranged facing the circuit breaker handcart, and can be pushed by a circuit breaker handcart pushing structure in the process that the circuit breaker handcart returns from a working position to a test position, so that a moving component force is provided for the sliding block, the sliding block is moved to an unlocking position from a stopping position along the fixing frame, and the cabinet door can be opened; the top abutting surface is located between the stopping surface and the inclined surface and is abutted and matched with the guide surface on the baffle, so that the sliding block is conveniently guided to move in the opening or closing process of the cabinet door, after the sliding block is moved to the unlocking position from the stopping displacement under the action of the pushing structure of the circuit breaker handcart, the cabinet door is opened, the top abutting surface is slidably matched with the guide surface on the baffle, the opening of the cabinet door is facilitated, particularly, when the cabinet door is closed, the sliding block can be firstly kept at the unlocking position under the abutting and guiding of the guide surface, is completely closed and then is switched to the stopping position, otherwise, the stopping surface of the sliding block cannot be abutted and matched with the baffle, and further normal use cannot be achieved.
The interlocking device realizes the interlocking between the switch cabinet door and the circuit breaker handcart, and can ensure that the blocking surface on the sliding block is in blocking fit with the matching surface on the blocking plate through the blocking position of the sliding block after the cabinet door is closed, so that the cabinet door cannot be opened, and the safety hazard caused by careless opening of the cabinet door by an overhaul worker when the circuit breaker handcart is in a working position is prevented. And when the circuit breaker handcart returns to the test position from the working position, the sliding block can move to the unlocking position from the stopping position under the pushing action force of the circuit breaker handcart pushing structure, and the cabinet door can be opened, so that the safety of maintainers is ensured.
Furthermore, in order to facilitate the processing and manufacturing of the fixing frame and the guiding installation of the sliding block, the fixing frame comprises a contact plate in contact fit with the sliding block and guide plates arranged on two opposite sides of the contact plate and used for guiding the sliding block, one of the sliding block and the guide plates is provided with a guide rod in a penetrating manner, the other one of the sliding block and the guide plates is provided with a guide long hole for the guide rod to penetrate, and the extending direction of the guide long hole is the same as the moving direction of the sliding block.
Furthermore, in order to fix the fixing frame on the cabinet door, the other two opposite sides of the contact plate are provided with fixing plates fixedly connected with the cabinet door, the fixing plates are L-shaped, each fixing plate comprises a first fixing edge connected with the contact plate and a second fixing edge used for being attached to and fixed with the cabinet door, and a space is reserved between the first fixing edges of the two fixing plates.
Further, when the circuit breaker handcart was in the work position for the convenience, run into emergency and need open the cabinet door, be provided with on the slider and be used for supplying the unblock pole to insert and force to drive the slider and move the compulsory unblock hole or the compulsory unblock groove to unblock the position by the stop displacement, it perforates in order to insert the contact plate of compulsory unblock hole or the compulsory unblock groove to be provided with on the contact plate to supply the unblock pole to pass, the fenestrate position of contact plate is corresponding with the position of compulsory unblock hole or the compulsory unblock groove on the slider, just the contact plate is perforated and is forced the unblock hole or force the unblock groove all to be used for with the unblock pole perforation on the cabinet door corresponding.
Furthermore, the fixing of the fixing frame is convenient, and the cabinet door is convenient to open when the circuit breaker handcart is in the working position in case of emergency, the other two opposite sides of the contact plate are provided with fixing plates which are fixedly connected with the cabinet door, a space is arranged between the two fixing plates, the slide block is provided with a forced unlocking hole or a forced unlocking groove which is used for inserting the unlocking rod and forcibly driving the slide block to move from the stopping position to the unlocking position, the contact plate is provided with a contact plate perforation through which the unlocking rod passes to be inserted into the forced unlocking hole or the forced unlocking groove, the position of the contact plate through hole corresponds to the position of the forced unlocking hole or the forced unlocking groove on the sliding block, and the contact plate perforation and the forced unlocking hole or the forced unlocking groove are used for corresponding to the unlocking rod perforation on the cabinet door, and the unlocking rod moving space for the unlocking rod to pass and driving the sliding block to move is formed at intervals.
Furthermore, in order to enable the two first fixing edges to have enough space and facilitate the unlocking rod to pass and move, the second fixing edges of the two fixing plates are arranged in an extending mode in a back-to-back mode.
Further, in order to reduce the moving friction force of the slider, the slider comprises a slider body and a bearing mounted on the slider body, and the bearing is in contact fit with the contact plate.
Furthermore, in order to simplify the structure and facilitate installation and setting, the guiding moving direction of the sliding block is the up-down direction, the blocking position of the sliding block is in the lower position, the unlocking position of the sliding block is in the upper position, and the sliding block is transited from the unlocking position to the blocking position by utilizing the self-weight.
Further, in order to make full use of the structure of the circuit breaker handcart, the circuit breaker handcart comprises a handcart body moving between a working position and a test position and a handcart panel fixedly arranged relative to the cabinet body, and the baffle plate is formed by the handcart panel.
Drawings
Fig. 1 is a partial structure diagram of a switch cabinet (a circuit breaker handcart is in a working position) in the invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a partial structural view of the switch cabinet of the invention (the circuit breaker handcart is in a test position);
FIG. 4 is an enlarged view at B in FIG. 3;
fig. 5 is a partial structure diagram of the circuit breaker handcart shown in fig. 1 to 4;
FIG. 6 is a perspective view of the fixed frame and the sliding block of FIG. 2;
FIG. 7 is a perspective view of the holder of FIG. 6;
fig. 8 is a perspective view of the slider of fig. 6.
In the figure: 1. a cabinet door; 2. a handcart body; 3. a fixed mount; 31. a contact plate; 32. a left guide plate; 33. a right guide plate; 34. a first fixed edge; 35. a second fixed edge; 36. a fixing hole; 37. a left guide long hole; 38. a right guide long hole; 39. punching a contact plate; 4. a guide bar; 5. a slider; 51. an inclined surface; 52. forcibly unlocking the hole; 53. perforating a guide rod; 54. a groove; 55. a bearing; 56. a stop surface; 6. a handcart panel; 61. a rear side; 62. a top surface; 63. a front side; 7. plugging screws; 8. and pushing the screw.
Detailed Description
One embodiment of the switch cabinet disclosed by the invention is shown in fig. 1-8, and comprises a cabinet body and a cabinet door 1 arranged on the cabinet body, wherein a circuit breaker handcart is arranged in the cabinet body, a circuit breaker is arranged on the circuit breaker handcart, the circuit breaker is provided with a test position close to the cabinet door 1 (namely close to the front) and a working position far away from the cabinet door 1 (namely close to the back), and the circuit breaker is switched between the working positions and the test position along with the circuit breaker handcart, so that actually two working positions of the circuit breaker are also two working positions of the circuit breaker handcart. The circuit breaker handcart comprises a handcart body 2 which moves back and forth between a working position (shown in figure 1) and a test position (shown in figure 3) and a handcart panel 6 which is fixedly arranged relative to a cabinet body, and the structure and the working principle of the circuit breaker handcart belong to the prior art and are not introduced more.
The switch cabinet comprises an interlocking device for realizing interlocking between a cabinet door 1 and a circuit breaker handcart, as shown in fig. 2 and 4, the interlocking device comprises a fixing frame 3 and a sliding block 5, the fixing frame 3 is fixed on the cabinet door 1, and the sliding block 5 is installed on the fixing frame 3 along the up-down direction in a guiding and moving mode.
Referring to fig. 6 and 7, the fixing frame 3 and the slider 5 are both vertically disposed, the fixing frame 3 includes a contact plate 31 in contact fit with the slider 5, guide plates disposed on left and right sides of the contact plate 31 for guiding the slider 5, respectively, a left guide plate 32 and a right guide plate 33, two sets of guide long holes are disposed on the two guide plates at intervals in the up-down direction, for example, the above set of guide long holes includes a left guide long hole 37 disposed on the left guide plate 32 and a right guide long hole 38 disposed on the right guide plate 33, each guide long hole extends in the up-down direction, that is, the extending direction of the guide long hole is the same as the moving direction of the slider 5.
Referring to fig. 8, two guide rod through holes 53 are formed in the slider 5 at a distance in the vertical direction, and the two guide rods 4 pass through the guide long holes of the left guide plate 32 and the right guide plate 33 and the guide rod through holes 53 of the slider 5, respectively, to guide and mount the slider 5 to the fixed frame 3. The guide rod 4 in this embodiment is a bolt, and includes a bolt head, a polished rod segment, and a threaded segment, the bolt head is located on the left side of the left guide plate 32, the threaded segment is located on the right side of the right guide plate 33, and a nut is connected to the threaded segment.
The upper and lower both sides of contact board 31 are provided with respectively with cabinet door 1 fixed connection's fixed plate, and the fixed plate is L shape, and two upper and lower fixed plate symmetries to the fixed plate of top is taken as the example, including the first fixed limit 34 that links to each other with contact board 31 and the second fixed limit 35 that pastes fixedly mutually with cabinet door 1, are provided with fixed orifices 36 on the second fixed limit, and fixed orifices 36 is the slot hole that extends from top to bottom, conveniently adjusts the fixed position of mount. An interval is arranged between the upper first fixing edge and the lower first fixing edge, and the two second fixing edges extend back to back.
As shown in fig. 8, the slider 5 has a stop surface 56 facing the contact plate 31, and of course, the stop surface 56 is also facing the cabinet door 1, and in order to reduce the sliding friction force of the slider 5, four recesses 54 are formed on the stop surface 56, and a bearing 55 is installed in each recess 54, so that the slider 5 is composed of a slider body and the bearing 55, and the bearing 55 is in contact with and engaged with the contact plate 31, thereby facilitating the up-and-down movement of the slider 5. The up-down movement stroke of the slider 5 includes a lower stop position and an upper unlock position, and the slider 5 is naturally at the stop position by its own weight.
As shown in fig. 5, the handcart panel 6 is a bent piece, and has a rear side 61, a top surface 62 and a front side 63, the front side 63 faces the cabinet door 1, the top surface 62 faces upward, and the rear side 61 faces the handcart body 2. When the sliding block 5 is in the stopping position, the rear side surface 61 of the handcart panel 6 can be in stopping fit with the stopping surface 56 on the sliding block 5, as shown in fig. 2, at this time, the cabinet door 1 cannot be opened, so that in practice, the rear side surface 61 also forms a matching surface in stopping fit with the stopping surface 56 on the sliding block 5, and the handcart panel 6 itself is also a baffle in stopping fit with the sliding block 5.
As shown in fig. 6 and 8, the sliding block 5 further has an inclined surface 51 disposed facing the handcart body 2, the inclined surface 51 is located at the rear side of the bottom of the sliding block, and a top abutting surface, i.e., the bottom surface of the sliding block 5, is further disposed between the stop surface 56 and the inclined surface 51, and is configured to abut against and cooperate with the top surface of the handcart panel 6.
As shown in fig. 4 and 5, a pushing screw 8 is mounted on the handcart body 2, the pushing screw 8 is a ball screw, and is used for pushing an inclined surface 51 on the sliding block 5 in a process that the handcart body 2 is retracted from the working position to the testing position, that is, in a process that the handcart body is moved from the back to the front, so as to provide a component force for the upward movement of the sliding block 5, so that the sliding block 5 moves upward along the fixing frame and moves from the blocking position to the unlocking position, as shown in fig. 4, at this time, the sliding block and the handcart panel are unblocked, and thus the cabinet door 1 can be opened.
During the opening process of the cabinet door 1, the bottom surface of the sliding block 5 is abutted and matched with the top surface 62 of the handcart panel 6, the sliding block 5 is supported and guided by the top surface 62 to slide on the top surface 62, and the sliding block 5 is in an unlocking position, so that the top surface 62 actually forms a guide surface which is abutted and matched with the bottom surface of the sliding block 5 and guides the sliding block to slide. And in the process of closing the cabinet door 1, the inclined surface 51 on the sliding block 5 firstly touches the edge between the top surface 62 and the front side surface 63, the sliding block moves upwards under the action of the extrusion force, the bottom surface of the sliding block 5 is abutted and matched with the top surface 62 of the handcart panel 6, the sliding block is temporarily in the unlocking position, and after the cabinet door is closed in place, the sliding block 5 slides down from the top surface 62 and moves downwards under the action of gravity to return to the stopping position. Therefore, the arrangement of the top surface 62 and the front side surface 63 ensures that the sliding block can be kept at the unlocking position firstly in the process of closing the cabinet door, and then switched to the blocking position after being completely closed, otherwise, the blocking surface of the sliding block cannot be in blocking fit with the handcart panel 6, and further cannot be used normally.
The structure ensures that the sliding block is matched with the handcart panel in a stopping way when the handcart is normally used, and the cabinet door cannot be opened, so that the condition that a maintenance worker carelessly opens the cabinet door to cause safety hazard when the circuit breaker handcart is in a working position is prevented. And only when the circuit breaker handcart returns to the test position from the working position, the sliding block can be moved to the unlocking position from the stopping position under the pushing action force of the pushing screw on the circuit breaker handcart, and the cabinet door can be opened, so that the safety of maintainers is ensured.
However, even if the circuit breaker handcart is in the working position, the cabinet door still needs to be opened in case of emergency, in order to adapt to this special situation, as shown in fig. 6 to 8, a forced unlocking hole 52 for inserting the unlocking rod and forcibly driving the slider to move from the blocking position to the unlocking position is arranged on the slider 5, and a contact plate through hole 39 for inserting the unlocking rod into the forced unlocking hole 52 is arranged on the contact plate 31, and the contact plate through hole 39 is a long hole extending up and down and corresponds to the position of the forced unlocking hole 52. In addition, still be provided with the unblock pole perforation that supplies the unblock pole to penetrate on cabinet door 1, unblock pole perforation and contact plate perforation 39 and force the position of unblock hole 52 corresponding, the unblock pole passes through the interval between two first fixed limits after penetrating the cabinet body, passes contact plate 31 and inserts in forcing the unblock hole 52, can stir the slider upward movement through the unblock pole, forces the unblock to it to make the cabinet door open.
Therefore, the interval between the two first fixed edges forms an unlocking rod moving space for the unlocking rod to pass through and drive the sliding block to move. In addition, in order to guarantee the leakproofness of the cabinet body when normally working, adopt shutoff screw 7 threaded connection on the cabinet door, carry out the shutoff with the unblock pole perforation.
In other embodiments of the switch cabinet, the baffle engaged with the sliding block stop may be a plate fixed in the cabinet body instead of the handcart panel.
In other embodiments of the switch cabinet, the blocking plate may have only a rear side and a top side, i.e. only a mating surface and a guiding surface, for example, the blocking plate is L-shaped, and when the inclined surface of the slider contacts the top side of the blocking plate during closing of the door, the blocking plate can also move upward under the pressing force, and is first in the unlocking position.
In other embodiments of the switch cabinet, the guiding direction of the sliding block may not be the up-down direction, for example, the sliding block may be in the left-right direction, and the sliding block and the fixing frame are in a horizontal position, and the guiding surface on the baffle faces left or right.
In other embodiments of the switch cabinet, the slider may be formed by only the slider body without the bearing, and the stopping surface of the slider is directly in sliding contact with the contact plate of the fixing frame.
In other embodiments of the switch cabinet, the fixing plate fixedly connected to the cabinet door of the switch cabinet may not be L-shaped, and may be a straight plate, for example, the straight plate is directly welded and fixed to the cabinet door, and at this time, a space is also provided between the two straight plates, so that the unlocking rod can pass through and move.
In other embodiments of the switch cabinet, the forced unlocking hole formed in the slider can be replaced by a forced unlocking groove, that is, the forced unlocking hole is a blind hole.
In other embodiments of the switch cabinet, the contact plate bores may also be round bores with a larger diameter instead of the elongated bores.
In other embodiments of the switch cabinet, the slider may not be provided with a forcible unlocking hole or a forcible unlocking groove, and the corresponding contact plate does not need to be provided with a contact plate through hole and the cabinet door does not need to be provided with an unlocking rod through hole.
In other embodiments of the switch cabinet, the two second fixing edges may also extend towards each other, provided that the spacing between the first fixing edges of the two fixing plates is sufficient.
In other embodiments of the switch cabinet, instead of providing fixing plates on both sides of the contact plate, a fixing plate may be fixed to the middle of the contact plate, and the fixing plate may be welded to the cabinet door, or the fixing plate may be fixedly provided to the guide plate.
In other embodiments of the switch cabinet, a circular guide rod through hole may be provided on the guide plate, and a guide slot hole for the guide rod to penetrate through may be provided on the slider.
In other embodiments of the switch cabinet, the guide rod may be a polished rod instead of a bolt, and in this case, cotter pins are required to be inserted into both ends of the guide rod to prevent the guide rod from being pulled out.
In other embodiments of the switch cabinet, the guiding fit between the fixed frame and the slider may not be in the form of a contact plate, a guide rod, and a guiding long hole, for example, a dovetail sliding groove may be provided on the fixed frame, a dovetail guide rail may be provided on the slider, the dovetail guide rail is installed in the dovetail sliding groove, and the guiding moving fit between the fixed frame and the slider is realized, but other shapes may also be adopted, such as a T-shaped sliding groove and a T-shaped guide rail.
In other embodiments of the switch cabinet, the pushing screw on the circuit breaker handcart may not be a ball screw but a common square screw, or the pushing structure may not be a pushing screw but a pushing rod fixed on the handcart.
The embodiment of the interlocking device for the switch cabinet door and the circuit breaker handcart in the invention is as follows: the interlocking device of the switch cabinet door and the circuit breaker handcart is the same as that in the switch cabinet embodiment, and repeated description is omitted here.
Claims (10)
1. The utility model provides an interlock of cubical switchboard cabinet door and circuit breaker handcart which characterized in that includes:
the fixing frame is used for being fixed on a cabinet door of the switch cabinet;
the sliding block is movably installed on the fixed frame in a guiding manner, a stop position used for being matched with a baffle stop fixedly arranged in the switch cabinet body and an unlocking position used for releasing the stop with the baffle are arranged in the moving stroke of the sliding block, and the sliding block can prevent the switch cabinet door from being opened when being in the stop position and can prevent the switch cabinet door from being opened when being in the unlocking position;
the sliding block is provided with a stopping surface used for facing the cabinet door of the switch cabinet, and the stopping surface is used for being in stopping fit with a matching surface on the baffle when the sliding block is in a stopping position; the sliding block is also provided with an inclined surface facing the circuit breaker handcart, and the inclined surface is used for providing moving component force for the sliding block when the circuit breaker handcart is pushed by a circuit breaker handcart pushing structure in the process of returning from the working position to the test position, so that the sliding block is moved to an unlocking position from a blocking position along the fixing frame; the sliding block is also provided with a butting surface which is arranged between the stopping surface and the inclined surface and is used for butting and matching with the guide surface on the baffle plate so as to guide the sliding block to move in the opening or closing process of the switch cabinet door, so that the sliding block is temporarily positioned in the unlocking position and is switched to the stopping position after the switch cabinet door is closed in place.
2. The interlocking device of the switch cabinet door and the circuit breaker handcart according to claim 1, wherein the fixing frame comprises a contact plate in contact fit with the sliding block and guide plates arranged on two opposite sides of the contact plate and used for guiding the sliding block, one of the sliding block and the guide plates is provided with a guide rod in a penetrating manner, the other one of the sliding block and the guide plates is provided with a guide long hole for the guide rod to penetrate, and the extending direction of the guide long hole is the same as the moving direction of the sliding block.
3. The interlocking device of the switch cabinet door and the circuit breaker handcart according to claim 2, wherein the other two opposite sides of the contact plate are provided with fixing plates for being fixedly connected with the switch cabinet door, the fixing plates are L-shaped and comprise first fixing edges connected with the contact plate and second fixing edges for being fixedly attached to the switch cabinet door, and a space is arranged between the first fixing edges of the two fixing plates.
4. The interlocking device of switch cabinet door and circuit breaker handcart of claim 3, characterized in that, be provided with on the slider and be used for supplying the unblock pole to insert and force to drive the slider and move the compulsory unblock hole or the compulsory unblock groove to unblock position by the stopping displacement, it perforates in order to insert the contact plate that forces the unblock hole or force the unblock groove to be provided with on the contact plate to supply the unblock pole to pass, the fenestrate position of contact plate is corresponding with the position of forcing the unblock hole or forcing the unblock groove on the slider, just the contact plate is perforated and is forced the unblock hole or force the unblock groove all to be used for perforating correspondingly with the unblock pole on the switch cabinet door, the interval forms the unblock pole activity space that supplies the unblock pole to pass.
5. The interlocking device of a switch cabinet door and a circuit breaker handcart according to claim 2, the other two opposite sides of the contact plate are provided with fixed plates which are fixedly connected with a cabinet door of the switch cabinet, a space is arranged between the two fixed plates, the slide block is provided with a forced unlocking hole or a forced unlocking groove which is used for inserting the unlocking rod and forcibly driving the slide block to move from the stopping position to the unlocking position, the contact plate is provided with a contact plate perforation through which the unlocking rod passes to be inserted into the forced unlocking hole or the forced unlocking groove, the position of the contact plate through hole corresponds to the position of the forced unlocking hole or the forced unlocking groove on the sliding block, and the contact plate perforation and the forced unlocking hole or the forced unlocking groove are used for corresponding to the unlocking rod perforation on the switch cabinet door, and the unlocking rod movable space for the unlocking rod to pass through and driving the sliding block to move is formed at intervals.
6. The interlocking device of the switch cabinet door and the circuit breaker handcart according to claim 3 or 4, characterized in that the second fixed sides of the two fixed plates are arranged to extend oppositely.
7. The interlocking device of the switch cabinet door and the circuit breaker handcart according to any one of claims 2 to 5, wherein the sliding block comprises a sliding block body and a bearing installed on the sliding block body, and the bearing is in contact fit with the contact plate.
8. The interlocking device of the switch cabinet door and the circuit breaker handcart according to any one of claims 1 to 5, characterized in that the guiding moving direction of the slide block is up and down, the blocking position of the slide block is at the lower position, the unlocking position is at the upper position, and the slide block is transited from the unlocking position to the blocking position by self weight.
9. A switch cabinet comprises a cabinet body and a cabinet door arranged on the cabinet body, wherein a circuit breaker handcart is arranged in the cabinet body, and the switch cabinet is characterized by further comprising an interlocking device of the switch cabinet door and the circuit breaker handcart according to any one of claims 1-8.
10. The switchgear cabinet according to claim 9, wherein the circuit breaker trolley comprises a trolley body moving between the working position and the testing position and a trolley panel fixedly arranged relative to the cabinet body, and the baffle is formed by the trolley panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911091021.8A CN110797787B (en) | 2019-11-09 | 2019-11-09 | Switch cabinet and interlocking device of switch cabinet door and circuit breaker handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911091021.8A CN110797787B (en) | 2019-11-09 | 2019-11-09 | Switch cabinet and interlocking device of switch cabinet door and circuit breaker handcart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110797787A true CN110797787A (en) | 2020-02-14 |
| CN110797787B CN110797787B (en) | 2021-04-06 |
Family
ID=69443637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911091021.8A Active CN110797787B (en) | 2019-11-09 | 2019-11-09 | Switch cabinet and interlocking device of switch cabinet door and circuit breaker handcart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110797787B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825142A (en) * | 2022-05-26 | 2022-07-29 | 国网河北省电力有限公司石家庄供电分公司 | Handcart type circuit breaker replacing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288956A (en) * | 1965-03-01 | 1966-11-29 | Gen Electric | Draw-out switch-gear interlock apparatus |
| CN2746501Y (en) * | 2004-10-30 | 2005-12-14 | 汕头正超电气有限公司 | Mechanical locking operation mechanism for electric switch cabinet |
| CN201528125U (en) * | 2009-08-05 | 2010-07-14 | 四川兴盛电器设备有限公司 | Interlocking mechanism for armoured central-positioned switch device cabinet door |
| US8040663B1 (en) * | 2008-07-16 | 2011-10-18 | Reliance Controls Corporation | Sequenced separately-derived transfer switch capable of switching a load between a pair of power supplies without introducing open neutral switching transients |
| CN102324708A (en) * | 2011-09-16 | 2012-01-18 | 伊顿电力设备有限公司 | Device for interlocking chassis vehicle with cabinet door of circuit breaker chamber |
| CN205828999U (en) * | 2016-07-25 | 2016-12-21 | 温州兴机电器有限公司 | A kind of door-closing interlock device and be provided with the chassis of this door-closing interlock |
| CN109412063A (en) * | 2017-08-16 | 2019-03-01 | 天津平高智能电气有限公司 | Breaker chamber interlock |
-
2019
- 2019-11-09 CN CN201911091021.8A patent/CN110797787B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288956A (en) * | 1965-03-01 | 1966-11-29 | Gen Electric | Draw-out switch-gear interlock apparatus |
| CN2746501Y (en) * | 2004-10-30 | 2005-12-14 | 汕头正超电气有限公司 | Mechanical locking operation mechanism for electric switch cabinet |
| US8040663B1 (en) * | 2008-07-16 | 2011-10-18 | Reliance Controls Corporation | Sequenced separately-derived transfer switch capable of switching a load between a pair of power supplies without introducing open neutral switching transients |
| CN201528125U (en) * | 2009-08-05 | 2010-07-14 | 四川兴盛电器设备有限公司 | Interlocking mechanism for armoured central-positioned switch device cabinet door |
| CN102324708A (en) * | 2011-09-16 | 2012-01-18 | 伊顿电力设备有限公司 | Device for interlocking chassis vehicle with cabinet door of circuit breaker chamber |
| CN205828999U (en) * | 2016-07-25 | 2016-12-21 | 温州兴机电器有限公司 | A kind of door-closing interlock device and be provided with the chassis of this door-closing interlock |
| CN109412063A (en) * | 2017-08-16 | 2019-03-01 | 天津平高智能电气有限公司 | Breaker chamber interlock |
Non-Patent Citations (1)
| Title |
|---|
| 石定良: "低压开关柜中断路器之间的机械联锁", 《电世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825142A (en) * | 2022-05-26 | 2022-07-29 | 国网河北省电力有限公司石家庄供电分公司 | Handcart type circuit breaker replacing method |
| CN114825142B (en) * | 2022-05-26 | 2024-03-12 | 国网河北省电力有限公司石家庄供电分公司 | Handcart type breaker replacement method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110797787B (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201349095Y (en) | Bus socket automatic on-off device of drawer functional unit in low-voltage switch cabinet | |
| CN110797787B (en) | Switch cabinet and interlocking device of switch cabinet door and circuit breaker handcart | |
| CN111405785A (en) | Front-back double-door type electric cabinet convenient to overhaul and high in stability | |
| CN211655538U (en) | Outdoor box-type power distribution station capable of being pulled out for detection and maintenance | |
| CN210405957U (en) | Electrical cabinet convenient to overhaul | |
| CN214896291U (en) | Controller convenient to overhaul for automatic production line | |
| CN215185121U (en) | Power distribution cabinet with quick installation structure | |
| CN105162017B (en) | A kind of handcart switch cabinet valve isolating device and handcart switch cabinet | |
| CN211743731U (en) | Low-voltage switchgear convenient to installation | |
| CN203056438U (en) | Valve locking device in armored movable-type metal-enclosed switch device | |
| CN219960350U (en) | Magnetic inserting machine for wind driven generator | |
| CN210743836U (en) | In put cabinet cable chamber back door interlock | |
| CN208820342U (en) | A kind of switchgear rail structure | |
| CN216055999U (en) | Valve device for low-voltage switch cabinet drawer | |
| CN218448960U (en) | Marine distribution cabinet | |
| CN202618936U (en) | Prying-resistant emergency cover plate device for locker door and locker using prying-resistant emergency cover plate device | |
| CN203607734U (en) | Handcart cabinet moving guide rail | |
| CN214740692U (en) | Rack is with hardware fitting who has support function | |
| CN219779596U (en) | Multi-layer switch cabinet convenient to overhaul | |
| CN215732883U (en) | Electrical installation board assembly | |
| CN216780479U (en) | Multifunctional construction steel cutting equipment | |
| CN211457669U (en) | Automatic detection equipment electric cabinet | |
| CN216814779U (en) | Quick detachable drawer structure of large-scale refrigerator | |
| CN216087234U (en) | Electric power cabinet convenient to realize inner structure installation | |
| CN220821330U (en) | Mining combined switch based on ore-grade system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230509 Address after: No. 1706 Xuchang City, Henan province 461000 XJ Avenue Patentee after: XUCHANG XUJI SOFTWARE TECHNOLOGY Co.,Ltd. Patentee after: XJ ELECTRIC Co.,Ltd. Patentee after: XJ Group Corp. Patentee after: Henan Xuji Electric Switch Co.,Ltd. Address before: No. 1706 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XUCHANG XUJI SOFTWARE TECHNOLOGY Co.,Ltd. Patentee before: XJ ELECTRIC Co.,Ltd. Patentee before: XJ Group Corp. |
|
| TR01 | Transfer of patent right |