CN111900659A - Low-voltage draw-out type switch cabinet - Google Patents
Low-voltage draw-out type switch cabinet Download PDFInfo
- Publication number
- CN111900659A CN111900659A CN202010789311.6A CN202010789311A CN111900659A CN 111900659 A CN111900659 A CN 111900659A CN 202010789311 A CN202010789311 A CN 202010789311A CN 111900659 A CN111900659 A CN 111900659A
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- Prior art keywords
- drawer
- rod
- side wall
- spring
- triangular
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- 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
- H02B11/173—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
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- 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
- H02B11/02—Details
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- 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
- H02B11/02—Details
- H02B11/10—Indicating electrical condition of gear; Arrangement of test sockets
Abstract
The invention relates to the field of switch cabinets, in particular to a low-voltage draw-out type switch cabinet which comprises a cabinet body, wherein the cabinet body comprises a control panel, a plurality of drawer units and a warning lamp, the control panel is arranged on the side wall, facing a user, of the cabinet body, the warning lamp is arranged on the side wall, at the top of the cabinet body, the plurality of drawer units respectively comprise a drawer and a drawer sliding cavity, the drawer is slidably inserted into the drawer sliding cavity, the side wall, at the front side of the drawer, is rotatably connected with a locking mechanism used for preventing the drawer from sliding out of the drawer sliding cavity, the inner wall, at the upper end of the drawer sliding cavity, of the drawer sliding cavity is provided with an elastic resetting device used for controlling the opening and closing of the warning lamp, and the inner wall. The drawout switch cabinet can strictly ensure the disconnection or connection sequence of the circuit breaker and the isolating switch in the circuit in the power on-off process, thereby effectively eliminating the potential safety hazard of the switch cabinet in the power on-off process.
Description
Technical Field
The invention relates to the field of switch cabinets, in particular to a low-voltage draw-out type switch cabinet.
Background
The low-voltage switch cabinet is used as a unitized electrical device for the division switch, is widely applied to the fields of power plants, chemical industry and the like, and can be used for effectively grouping protection, conversion and control operation by electrically combining the switch into functional units through the low-voltage switch cabinet. The general low-voltage switch cabinet structurally comprises a fixed low-voltage switch cabinet and a draw-out low-voltage switch cabinet, wherein the draw-out low-voltage switch cabinet consists of a fixed cabinet body and a movable device part provided with main electrical elements such as switches and the like, the movable part is convenient and light to move and change, the positioning is reliable after the movable part is moved, drawers of the same type and specification can be reliably exchanged, and the processing method of the part of the draw-out low-voltage switch cabinet is basically similar to that of the fixed cabinet body. However, due to the exchange requirement, the precision of the cabinet body must be improved, the relevant parts of the structure must have a sufficient adjustment, and the movable device parts must be capable of moving and reliably carrying the main components, so that the relevant parts must have a sufficient adjustment with high mechanical strength and high precision.
When overhauing equipment in general mill, in order to guarantee other equipment normal operating, need carry out electric power on-off control through pull-out type cubical switchboard, among the actual operation process, need strictly guarantee that cubical switchboard drawer unit takes out the outage, and take out wherein setting take out when leaving switch and circuit breaker, have strict technical requirement: the isolating switch reliably isolates the part of the high-voltage device which needs power failure from the electrified part so as to ensure the safety of maintenance work. The contacts of the disconnector are all exposed in the air, have obvious disconnection points, and the disconnector has no arc extinguishing device, and therefore cannot be used for cutting off load current or short-circuit current, otherwise, under the action of high voltage, the disconnection points will generate strong electric arcs, and are difficult to self-extinguish, and even flashover (relative ground or interphase short circuit) can be caused, equipment is burnt, personal safety is endangered, which is a serious accident of so-called 'pulling the disconnector with load', and during specific operation: firstly, the isolating switch is switched on, and then the circuit breaker or the load switch is switched on; during power-off operation: the circuit breaker or the load switch is disconnected firstly, and then the isolating switch is disconnected, so that the general switch cabinet design can not absolutely guarantee the sequence requirements of the on-off actions of the isolating switch and the circuit breaker, and serious potential safety hazards exist.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a low-voltage draw-out type switch cabinet.
The technical scheme adopted by the invention for solving the technical problems is as follows: a low-voltage draw-out type switch cabinet comprises a cabinet body, wherein the cabinet body comprises a control panel, a plurality of drawer units and a warning lamp, the control panel is arranged on one side wall of the cabinet body facing a user, the warning lamp is arranged on the side wall of the top of the cabinet body, the drawer units respectively comprise a drawer and a drawer sliding cavity, the drawer is slidably inserted into the drawer sliding cavity, a locking mechanism for preventing the drawer from sliding out of the drawer sliding cavity is rotatably connected onto the side wall of the front side of the drawer, and an elastic reset device for controlling the opening and closing of the warning lamp is arranged on the inner wall of the upper end of the drawer sliding cavity;
two vacuum circuit breakers are symmetrically arranged on the inner wall of the rear side of each drawer sliding cavity, a disconnecting switch is arranged at the positive middle position of the two vacuum circuit breakers, the two vacuum circuit breakers and the disconnecting switch are connected in series through a first lead, a triangular guide rod is integrally formed at one end of a movable conducting rod of each vacuum circuit breaker, telescopic rods are symmetrically arranged on the side wall of the bottom of each drawer sliding cavity, a triangular plate is fixedly connected to the upper end of each telescopic rod, triangular blocks are integrally formed on two sides of each triangular plate, the inclined plane of one triangular block is abutted against the inclined plane of the triangular guide rod, the plane of the other triangular block is abutted against the plane of the disconnecting switch, two guide sleeves are symmetrically arranged on the side wall of the rear side of each drawer, and guide posts corresponding to the guide sleeves are symmetrically and fixedly arranged on the side walls of the disconnecting switches corresponding to the, the guide post is inserted in the guide sleeve in a sliding manner, a first spring is fixedly connected in a sleeve hole of the guide sleeve, and one end of the first spring is fixedly connected with the side wall of the front end of the guide post;
the side wall of the rear side of the drawer is symmetrically provided with two supports, a pair of fixed rods is fixedly connected to each support, the number of each pair of fixed rods is two, a retaining shoulder is fixedly sleeved on the outer wall of one end, close to the side wall of the sliding cavity of the drawer, of each fixed rod, a second spring is sleeved on the side wall of the outer side of each fixed rod, a triangular clamping rod is connected onto each fixed rod in a sliding mode, two ends of each second spring are respectively abutted against the retaining shoulder and the side wall of the triangular clamping rod, and the triangular clamping rod is clamped with a triangular guide rod;
the bottom symmetry of drawer sliding chamber is inserted and is equipped with the direction spout, and the direction spout includes that first perpendicular groove, chute and second erect the groove, first perpendicular groove, chute and second erect the groove and communicate each other and the combination is the broken line form, fixedly connected with and direction spout sliding connection's direction slide bar on the lower extreme lateral wall of triangle kelly.
Specifically, locking mechanism includes handle, handle pivot and handle locking piece, and fixed connection between handle, handle pivot and the handle locking piece, the handle pivot runs through the preceding curb plate of drawer and rotates rather than the lateral wall and be connected, the locking jack has been seted up on the upper end inner wall in the drawer sliding chamber.
Specifically, the elastic resetting device is including inlaying the fixed plate of establishing on the locking jack hole bottom lateral wall of drawer sliding cavity upper end, the lower extreme lateral wall integrated into one piece of fixed plate has two pipe casings, and the mouth of pipe casing is provided with the retaining ring, sliding connection has the slide bar that the annular kept off the shoulder in the pipe casing, and the other end fixedly connected with movable plate of slide bar, the outside cover of slide bar is equipped with the third spring, and the both ends of third spring offset with the lateral wall of pipe casing and movable plate respectively, the downside symmetry of movable plate is provided with positive and negative conductive contact, the both sides of locking jack are provided with the second wire, just form the closed circuit of establishing ties through the second wire between positive and negative conductive contact and the warning light.
Specifically, the telescopic link includes telescopic link cover, carriage release lever and fourth spring, the carriage release lever slides and inserts and establish in the telescopic link cover, the fourth spring housing is established in the outside of carriage release lever and telescopic link cover and its both ends respectively with the lateral wall counterbalance setting of drawer sliding chamber and set-square.
Specifically, when the fourth spring is in the maximum contraction state, the height of the plane of the triangular block is lower than the height of the plane where the lowest end of the isolating switch is located.
The invention has the beneficial effects that:
(1) according to the low-voltage draw-out type switch cabinet, the handle rotating shaft, the handle locking block and the locking jack are arranged, when the drawer is closed, the handle is rotated by 90 degrees to be in a vertical state, the handle locking block is rotated into the locking jack, so that the drawer is locked with the drawer sliding cavity, and the connection state of a power supply is ensured; in addition, when the handle is rotated to a vertical state, the handle locking block enters the locking jack and pushes the moving plate upwards, so that the third spring is compressed, the sliding rod moves towards the inside of the pipe sleeve, the positive and negative conductive contacts are separated from the second wire, the warning lamp is extinguished, and the drawer of a worker is reminded of being in a well closed state.
(2) The invention relates to a low-voltage draw-out type switch cabinet, which is characterized in that a vacuum circuit breaker, a triangular guide rod and a triangular clamping rod are arranged, when power failure is required, a drawer is drawn, a fixed rod drives the triangular clamping rod to move backwards, the triangular clamping rod pulls the triangular guide rod to move backwards, the triangular guide rod in the vacuum circuit breaker drives a movable conductive rod in the vacuum circuit breaker to move and make the movable conductive rod be separated from contact with an internal contact, so that the vacuum circuit breaker is ensured to be disconnected from a loop firstly, meanwhile, the triangular guide rod and a triangular block are arranged, so that the triangular guide rod extrudes the inclined plane of the triangular block in the moving process, a triangular plate moves downwards, and a guide pillar, a guide sleeve, a first spring and an isolating switch are arranged, so that the isolating switch is separated from the electrical connection with a first lead when the drawer is continuously pulled after the vacuum circuit breaker is disconnected from the loop, and finally, when, the vacuum circuit breaker is disconnected from the loop firstly, and then the isolating switch is disconnected from the loop; during power-on operation, the drawer pushes the guide sleeve and the guide post to move towards the drawer sliding cavity, because the first spring is in an uncompressed state at the moment, the isolating switch is firstly contacted with the first lead, then the drawer continuously moves towards the drawer sliding cavity, the triangular clamping rod extrudes the triangular guide rod to enable the second spring to contract, meanwhile, the rear side wall of the drawer extrudes the triangular guide rod to move towards the inside of the vacuum circuit breaker, the triangular guide rod slides from the inclined plane of the triangular block until the triangular clamping rod is clamped with the triangular guide rod again, the triangular plate resets again under the resilience of the fourth spring, the plane of the triangular block on the triangular plate tightly supports the isolating switch, the triangular guide rod drives the movable conducting rod to be contacted with a contact inside again to switch on the vacuum circuit breaker, and during power-on operation, the isolating switch is strictly ensured to be firstly switched into a loop, then the vacuum circuit breaker is switched into the whole loop again, thereby eliminating the potential safety hazard of the switch cabinet when the switch cabinet is powered on and powered off.
(3) According to the low-voltage draw-out type switch cabinet, the triangular guide rod, the triangular clamping rod and the triangular plate are arranged, when the triangular clamping rod is abraded, the contact surface of the triangular clamping rod is abraded, the angle of the inclined surface is reduced, the clamping surface between the triangular clamping rod and the triangular clamping rod is reduced, the triangular clamping rod is not pulled to a preset position, and then the triangular clamping rod is in a clamping-out state, so that the inclined surface of the triangular guide rod cannot completely press the triangular plate, and at the moment, because the height of the triangular block in the triangular plate cannot enable the isolating switch to pass through, the drawer cannot be completely drawn out by an operator at the moment, the operator is reminded of needing to carry out integral power-off maintenance on the switch cabinet; when the triangular guide rod is worn, the triangular clamping rod is not completely clamped with the triangular guide rod, and the drawer can not be completely pulled out under the condition of being separated from the clamping state in advance as the condition of the triangular guide rod; wear and tear appears when that triangle guide arm and triangle contact's triangle piece, when the triangle guide arm extrudeed with the triangle piece, because the triangle piece is high not enough after wearing and tearing, then the triangle can't push down to set for the height, isolator can't pass through this moment, and same operating personnel can't take out the drawer completely to under triangle guide arm, triangle kelly and triangle three's mutually supporting, the structure that can guarantee cubical switchboard internal control can play safeguard function when wearing and tearing appear.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of a general assembly structure of a low-voltage draw-out type switch cabinet provided by the invention;
fig. 2 is a schematic structural diagram of a drawer unit of a low-voltage draw-out type switch cabinet provided by the invention;
fig. 3 is a schematic structural diagram of the interior of a drawer unit of a low-voltage draw-out type switch cabinet provided by the invention;
fig. 4 is a schematic structural diagram of a drawer slide cavity of a low-voltage draw-out type switch cabinet provided by the invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 4;
fig. 6 is a schematic structural diagram of a vacuum circuit breaker of a low-voltage draw-out type switch cabinet provided by the invention;
fig. 7 is a schematic structural diagram of a locking mechanism of a low-voltage draw-out type switch cabinet provided by the invention;
fig. 8 is a schematic structural diagram of an elastic reset device of a low-voltage draw-out type switch cabinet provided by the invention.
In the figure: 1. a cabinet body; 2. a control panel; 3. a warning light; 4. a drawer; 5. a locking mechanism; 501. a handle; 502. a handle spindle; 503. a handle lock block; 6. an elastic reset device; 601. a fixing plate; 602. moving the plate; 603. pipe sleeve; 604. a third spring; 605. a slide bar; 606. positive and negative conductive contacts; 7. a drawer slide chamber; 8. a vacuum circuit breaker; 801. a triangular guide bar; 9. an isolating switch; 10. a guide sleeve; 11. a triangular clamping rod; 12. a second spring; 13. fixing the rod; 14. a guide chute; 1401. a first vertical slot; 1402. a chute; 1403. a second vertical slot; 15. a set square; 1501. a triangular block; 16. a telescopic rod; 17. a first spring; 18. a guide post; 19. a first conductive line; 20. a guide slide bar; 21. a second conductive line.
Detailed Description
The following description of the embodiments of the present invention is provided by way of specific examples, and those skilled in the art will appreciate the advantages and utilities of the present invention from the disclosure herein. It should be noted that the drawings provided in the following embodiments are only for illustrative purposes, are schematic drawings rather than actual drawings, and are not to be construed as limiting the invention, and in order to better illustrate the embodiments of the invention, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is merely for convenience of description and simplicity of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings for the above applications according to specific situations.
As shown in fig. 1 to 8, the low-voltage draw-out type switch cabinet comprises a cabinet body 1, wherein the cabinet body 1 comprises a control panel 2, a plurality of drawer units and a warning light 3, the control panel 2 is arranged on a side wall of the cabinet body 1 facing a user, the control panel 2 can reflect states and electric power related data inside each drawer unit, the warning light 3 is arranged on a side wall of the top of the cabinet body 1, each drawer unit comprises a drawer 4 and a drawer sliding cavity 7, the drawer 4 is slidably inserted into the drawer sliding cavity 7, a locking mechanism 5 for preventing the drawer 4 from sliding out of the drawer sliding cavity 7 is rotatably connected to a side wall of the front side of the drawer 4, and an elastic resetting device 6 for controlling the opening and closing of the warning light 3 is arranged on an inner wall of the upper end of the drawer sliding cavity 7;
two vacuum circuit breakers 8 are symmetrically arranged on the inner wall of the rear side of each drawer sliding cavity 7, a disconnecting switch 9 is arranged at the right middle position of the two vacuum circuit breakers 8, the two vacuum circuit breakers 8 are connected with the disconnecting switch 9 in series through a first lead 19, a triangular guide rod 801 is integrally formed at one end of a movable conducting rod of each vacuum circuit breaker 8, telescopic rods 16 are symmetrically arranged on the side wall of the bottom of each drawer sliding cavity 7, a triangular plate 15 is fixedly connected to the upper end of each telescopic rod 16, triangular blocks 1501 are integrally formed on two sides of each triangular plate 15, the machining processes and time of all parts can be reduced through the integrally formed machining process, the inclined plane of one triangular block 1501 is abutted against the inclined plane of the triangular guide rod 801, the plane of the other triangular block 1501 is abutted against the plane of the disconnecting switch 9, and two guide sleeves 10 are symmetrically arranged on the side wall of the rear side, guide posts 18 corresponding to the guide sleeves 10 are symmetrically and fixedly arranged on the side walls of the isolating switch 9 corresponding to the drawer 4, the guide posts 18 are slidably inserted into the guide sleeves 10, a first spring 17 is fixedly connected in a sleeve hole of the guide sleeve 10, and one end of the first spring 17 is fixedly connected with the side wall of the front end of the guide post 18;
two supports are symmetrically arranged on the side wall of the rear side of the drawer 4, a pair of fixing rods 13 is fixedly connected to each support, the number of each pair of fixing rods 13 is two, a retaining shoulder is fixedly sleeved on the outer wall of one end, close to the side wall of the drawer sliding cavity 7, of each fixing rod 13, a second spring 12 is sleeved on the side wall of the outer side of each fixing rod 13, a triangular clamping rod 11 is slidably connected to each fixing rod 13, two ends of each second spring 12 are respectively abutted against the retaining shoulder and the side wall of the triangular clamping rod 11, and the triangular clamping rod 11 is clamped with the triangular guide rod 801;
the bottom of the drawer sliding chamber 7 is symmetrically inserted with guide sliding grooves 14, each guide sliding groove 14 comprises a first vertical groove 1401, a chute 1402 and a second vertical groove 1403, the first vertical groove 1401, the chute 1402 and the second vertical groove 1403 are mutually communicated and combined to form a broken line shape, and the side wall of the lower end of the triangular clamping rod 11 is fixedly connected with a guide sliding rod 20 in sliding connection with the guide sliding groove 14.
Specifically, locking mechanism 5 includes handle 501, handle pivot 502 and handle locking piece 503, and handle 501, fixed connection between handle pivot 502 and the handle locking piece 503, handle pivot 502 runs through the preceding curb plate of drawer 4 and rotates rather than the lateral wall and be connected, the locking jack has been seted up on the upper end inner wall of drawer sliding chamber 7, through rotating handle 501, make in the rotatory locking jack that advances of handle locking piece 503, can guarantee that drawer 4 gets into drawer sliding chamber 7 completely, guarantee the unexpected phenomenon of opening drawer 4 can not appear, and furtherly, handle pivot 502 adopts the damping pivot, make it rotate and have the damping, need operating personnel's operation in person, just can rotate.
Specifically, the elastic resetting device 6 comprises a fixed plate 601 embedded on the bottom side wall of a locking jack hole at the upper end of a drawer sliding cavity 7, two pipe sleeves 603 are integrally formed on the side wall at the lower end of the fixed plate 601, a check ring is arranged at the pipe orifice of the pipe sleeves 603, a slide rod 605 with an annular check shoulder is connected in the pipe sleeves 603 in a sliding manner, a moving plate 602 is fixedly connected to the other end of the slide rod 605, a third spring 604 is sleeved outside the slide rod 605, two ends of the third spring 604 respectively abut against the pipe sleeves 603 and the side wall of the moving plate 602, positive and negative conductive contacts 606 are symmetrically arranged on the lower side of the moving plate 602, second conducting wires 21 are arranged on two sides of the locking jack, and a closed loop in series connection is formed between the positive and negative conductive contacts and a warning lamp 3 through the second conducting wires 21, therefore, the handle locking block 503 is rotated out of the locking jack, and the moving plate 602 moves down, so that the positive and negative conductive contacts 606 are respectively contacted with the second wires 21 at the two ends, and a closed loop is formed, so that the warning lamp 3 is turned on, and an operator is prompted to pull the drawer 4 to perform power-off operation.
Specifically, telescopic link 16 includes the telescopic link cover, carriage release lever and fourth spring, the carriage release lever slides and inserts and establishes in the telescopic link cover, the fourth spring housing is established in the outside of carriage release lever and telescopic link cover and its both ends respectively with the lateral wall counterbalance setting of drawer sliding chamber 7 and set-square 15, it needs to explain, the looping department indent of telescopic link cover forms the fender ring, and the tip of carriage release lever is provided with the dog that is greater than the opening diameter who keeps off the ring, can be after the fourth spring kick-backs completely, when continuing to stimulate drawer 4, the carriage release lever can not stretch out the telescopic link cover, in addition, through the telescopic link cover, the combined design of carriage release lever and fourth spring, guarantee to keep whole action at whole compression resilience in-process in vertical state.
Specifically, under the state that the fourth spring is in the biggest shrink, the planar height that highly is less than isolator 9 minimum end department of triangle block 1501, guarantees that triangle block 1501 receives the extrusion back of triangle guide arm 801, and when triangle set 15 was in the minimum, isolator 9 can be smoothly through triangle set 15's upper end and then accomplish subsequent outage process.
The working principle is as follows: in the practical application process of the low-voltage switch cabinet, if some equipment has a fault and the like and needs to be overhauled, in order to not affect the normal use of other equipment, the corresponding drawer unit in the switch cabinet needs to be pulled and pulled to be powered off, the handle 501 is rotated to a transverse state, the third spring 604 rebounds and resets at the moment, the positive and negative conductive contacts 606 at the two ends of the moving plate 602 are in contact with the second lead 21, so that the warning lamp 3 is lightened, and an operator is prompted to perform the operation of pulling and pulling the drawer 4;
under the resilience of the first spring 17 and the pull force of an operator, the drawer 4 slides out of the drawer slide chamber 7, in the first stage, the drawer 4 drives the fixed rod 13 to move outwards, the triangular guide rod 801 drives the movable conductive rod to move in a state that the triangular clamping rod 11 is clamped with the triangular guide rod 801, the vacuum circuit breaker 8 is disconnected in a loop at the moment, meanwhile, the triangular guide rod 801 presses the inclined plane of the triangular block 1501 in the moving process, so that the triangular plate 15 compresses the telescopic rod 16 to move towards the bottom together, when the guide slide rod 20 at the lower side of the triangular clamping rod 11 slides to the tail end of the inclined groove 1402 in the guide slide groove 14, the triangular guide rod 801 completely presses the uppermost end of the inclined plane of the triangular block 1501, in the second stage, the drawer 4 is pulled continuously, because the triangular block 1501 of the triangular plate 15 is at the lowest height at the moment, the lowest end of the isolating switch 9 is positioned at the upper, the isolating switch 9 is not blocked by the triangular block 1501, so that the isolating switch 9 can pass through the triangular plate 15, the isolating switch 9 is separated from the first lead 19 to complete the operation of disconnection from the loop, and therefore, when the drawer unit is in power-off operation, the vacuum circuit breaker 8 firstly disconnects the isolating switch 9 from the loop and then disconnects the circuit integrally until the drawer 4 is pulled to the tail end of the second vertical groove 1403, and the whole drawer 4 is pulled to complete the power-off operation;
after the equipment is overhauled, the power-on operation is required, the drawer 4 is pushed, the isolating switch 9 is firstly contacted with the first conducting wire 19 to be electrified, meanwhile, the drawer 4 extrudes the first spring 17 to shrink, the guide sleeve 10 moves along the shrinking direction of the first spring 17, when the first spring 17 shrinks completely, the drawer 4 extrudes the triangular guide rod 801 to move a certain distance towards the rear side, meanwhile, the fixing rod 13 drives the triangular clamping rod 11 to move towards the inside of the drawer sliding cavity 7, the inclined surface of the triangular clamping rod 11 extrudes the inclined surface of the triangular guide rod 801, the second spring 12 drives the triangular clamping rod 11 to recover to the original shape after shrinking, the triangular clamping rod 11 is clamped with the triangular guide rod 801 again, the triangular guide rod 801 pushes the movable conducting rod in the vacuum circuit breaker 8 to contact and enter the loop, the triangular plate 15 is also in the rebound action of the fourth spring in the telescopic rod 16 to recover the initial height, and further, the isolating, therefore, when the drawer unit is in power-on operation, the isolating switch 9 is firstly switched into the whole power-on sequence of the loop after the vacuum circuit breaker 8 is switched into the loop, finally, the handle 501 is rotated, the handle locking block 503 is rotated to enter the locking jack and extrude the moving plate 602, the positive and negative conductive contacts 606 are separated from the clamping relation with the second lead 21, the warning lamp 3 is turned off, the reset operation of the whole drawer 4 is completed, for the power-on and power-off operation of the switch cabinet, the sequence of the disconnection or connection of the vacuum circuit breaker 8 and the isolating switch 9 and the whole loop is strictly followed, and the potential safety hazard of the switch cabinet in the power-on and power-off process is eliminated.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (5)
1. The utility model provides a low pressure pull-out type cubical switchboard which characterized in that: the intelligent cabinet comprises a cabinet body (1), wherein the cabinet body (1) comprises a control panel (2), a plurality of drawer units and a warning lamp (3), the control panel (2) is arranged on one side wall of the cabinet body (1) facing a user, the warning lamp (3) is arranged on the side wall of the top of the cabinet body (1), the drawer units respectively comprise a drawer (4) and a drawer sliding cavity (7), the drawer (4) is slidably inserted into the drawer sliding cavity (7), a locking mechanism (5) for preventing the drawer (4) from sliding out of the drawer sliding cavity (7) is rotatably connected onto the side wall of the front side of the drawer (4), and an elastic resetting device (6) for controlling the warning lamp (3) to be opened and closed is arranged on the inner wall of the upper end of the drawer sliding cavity (7);
each rear side inner wall symmetry of drawer sliding chamber (7) is provided with two vacuum circuit breakers (8), and the positive middle position that is located two vacuum circuit breakers (8) is provided with isolator (9), and establishes ties through first wire (19) between two vacuum circuit breakers (8) and isolator (9), the one end integrated into one piece of the movable conducting rod of vacuum circuit breaker (8) has triangle guide arm (801), the bottom lateral wall symmetry of drawer sliding chamber (7) is provided with telescopic link (16), and the upper end fixedly connected with set-square (15) of telescopic link (16), the both sides integrated into one piece of set-square (15) has set-square (1501), one of them the inclined plane of set-square (1501) offsets with the inclined plane of triangle guide arm (801) and sets up, and another the plane of set-square (1501) offsets with the plane of isolator (9), two guide sleeves (10) are symmetrically arranged on the side wall of the rear side of the drawer (4), guide posts (18) corresponding to the guide sleeves (10) are symmetrically and fixedly arranged on the side wall of the isolating switch (9) corresponding to the drawer (4), the guide posts (18) are inserted into the guide sleeves (10) in a sliding manner, a first spring (17) is fixedly connected into a sleeve hole of each guide sleeve (10), and one end of each first spring (17) is fixedly connected with the side wall of the front end of each guide post (18);
the drawer is characterized in that two supports are symmetrically arranged on the side wall of the rear side of the drawer (4), a pair of fixing rods (13) is fixedly connected to each support, the number of each pair of fixing rods (13) is two, a retaining shoulder is fixedly sleeved on the outer wall of one end, close to the side wall of the drawer sliding cavity (7), of each fixing rod (13), a second spring (12) is sleeved on the side wall of the outer side of each fixing rod (13), a triangular clamping rod (11) is slidably connected to each fixing rod (13), two ends of each second spring (12) are respectively abutted to the retaining shoulder and the side wall of the triangular clamping rod (11), and the triangular clamping rod (11) is clamped with the triangular guide rod (801);
the bottom symmetry of drawer sliding chamber (7) is inserted and is equipped with direction spout (14), and direction spout (14) including first perpendicular groove (1401), chute (1402) and second perpendicular groove (1403), first perpendicular groove (1401), chute (1402) and second perpendicular groove (1403) communicate each other and the combination is the broken line form, fixedly connected with and direction spout (14) sliding connection's guide slide bar (20) on the lower extreme lateral wall of triangle kelly (11).
2. A low voltage draw-out switchgear as claimed in claim 1, wherein: locking mechanism (5) include handle (501), handle pivot (502) and handle locking piece (503), and fixed connection between handle (501), handle pivot (502) and the handle locking piece (503), handle pivot (502) run through the preceding curb plate of drawer (4) and rotate rather than the lateral wall and be connected, the locking jack has been seted up on the upper end inner wall of drawer sliding chamber (7).
3. A low voltage draw-out switchgear as claimed in claim 1, wherein: the elastic reset device (6) comprises a fixed plate (601) which is embedded on the side wall of the bottom of the locking jack hole at the upper end of the drawer sliding cavity (7), two pipe sleeves (603) are integrally formed on the side wall of the lower end of the fixing plate (601), a check ring is arranged at the pipe orifice of the pipe sleeve (603), a sliding rod (605) with an annular check shoulder is connected in the pipe sleeve (603) in a sliding way, the other end of the sliding rod (605) is fixedly connected with a moving plate (602), the outer side of the sliding rod (605) is sleeved with a third spring (604), and both ends of the third spring (604) are respectively propped against the pipe sleeve (603) and the side wall of the moving plate (602), the lower side of the moving plate (602) is symmetrically provided with positive and negative conductive contacts (606), two sides of the locking jack are provided with second leads (21), and a closed loop which is connected in series is formed between the positive and negative conductive contacts and the warning lamp (3) through a second lead (21).
4. A low voltage draw-out switchgear as claimed in claim 1, wherein: the telescopic rod (16) comprises a telescopic rod sleeve, a moving rod and a fourth spring, the moving rod is slidably inserted into the telescopic rod sleeve, the fourth spring is sleeved outside the moving rod and the telescopic rod sleeve, and two ends of the fourth spring are respectively abutted to the side walls of the drawer sliding cavity (7) and the triangular plate (15).
5. A low voltage draw-out switchgear as claimed in claim 4, wherein: and when the fourth spring is in the maximum contraction state, the height of the plane of the triangular block (1501) is lower than that of the plane of the lowest end of the isolating switch (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010789311.6A CN111900659B (en) | 2020-08-07 | 2020-08-07 | Low-voltage draw-out type switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010789311.6A CN111900659B (en) | 2020-08-07 | 2020-08-07 | Low-voltage draw-out type switch cabinet |
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| CN111900659A true CN111900659A (en) | 2020-11-06 |
| CN111900659B CN111900659B (en) | 2022-04-15 |
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| CN202010789311.6A Active CN111900659B (en) | 2020-08-07 | 2020-08-07 | Low-voltage draw-out type switch cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113067273A (en) * | 2021-03-09 | 2021-07-02 | 安徽中意电气成套设备有限公司 | Limiting structure for installing switch cabinet and using method thereof |
| CN114188646A (en) * | 2021-12-07 | 2022-03-15 | 安徽汉星能源有限公司 | Photovoltaic energy storage battery box convenient to overhaul |
| CN115714328A (en) * | 2022-11-23 | 2023-02-24 | 杭州荣科电气设备有限公司 | Low-voltage active filter cabinet with short-circuit protection independent module |
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| CN114188646B (en) * | 2021-12-07 | 2024-02-20 | 安徽汉星能源有限公司 | Photovoltaic energy storage battery box convenient to overhaul |
| CN115714328A (en) * | 2022-11-23 | 2023-02-24 | 杭州荣科电气设备有限公司 | Low-voltage active filter cabinet with short-circuit protection independent module |
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| CN111900659B (en) | 2022-04-15 |
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Effective date of registration: 20220328 Address after: Taoshui Town, you County, Zhuzhou City, Hunan Province 412300 Applicant after: HUNAN XIANGDONG SWITCH FACTORY Address before: 1104, building a, Lugu business center, No. 199, Lulong Road, high tech Development Zone, Changsha, Hunan 410000 Applicant before: Wang Huaheng |
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