1018results about "Switchgear with withdrawable carriage" patented technology

The invention relates to the technical field of switch cabinets, in particular to a high-voltage handcart type switch cabinet and a breaking method thereof.The high-voltage handcart type switch cabinet comprises a cabinet body and a sliding groove formed in the cabinet body, a handcart is installed in the sliding groove in a sliding mode, and a fixing plate is arranged in the cabinet body; the displacement locking mechanism is arranged on the fixing plate, is connected with the handcart and is used for adjusting the locking state of the handcart; the controller is installed in the cabinet body, a connection and disconnection regulation and control mechanism connected with the controller is arranged on the fixing plate, a follow-up rotating mechanism is arranged on the displacement locking mechanism, and the follow-up rotating mechanism can adjust the on-off state of the controller through the connection and disconnection regulation and control mechanism when the displacement locking mechanism moves; and the trigger reset mechanism is arranged on the displacement locking mechanism and is connected with the follow-up rotating mechanism, and according to the position of the handcart, on-off of the circuit breaker can be automatically controlled so as to ensure that the switch cabinet is always kept in a safe state when being used.

The present invention relates to a functional unit of a low-voltage complete set of equipment guided and positioned through a sliding groove, including a unit chamber and a unit assembly within the unit chamber. There is a guide rail device on each of the left and right sides of the unit assembly. The guide rail device includes a sliding groove and at least two sliding members arranged front and rear and embedded in the sliding groove. The sliding members and the sliding groove are respectively located at the bottom of the unit assembly and on the unit chamber floor plate of the unit chamber. The sliding groove includes a forward movement stroke segment and a rear connection stroke segment distributed front and rear. The rear connection stroke segment is used to cooperate with the rear sliding member to guide the unit assembly in the connection stroke. The fitting clearance between the forward movement stroke segment and the sliding member > the fitting clearance between the rear connection stroke segment and the sliding member. The beneficial effects are as follows: The sliding groove type guide rail device can effectively ensure the correct alignment and insertion of the main and auxiliary circuit connectors during the displacement operation of the functional unit, and ensure more reliable main circuit connection performance; at the same time, the structure is simple, with few parts and low cost.

The invention relates to a multifunctional draw-out type low-voltage switch device, which relates to the technical field of low-voltage switch cabinets and comprises eight mutually matched instrument rooms, a digital detection module compartment, a transformer power supply wire inlet room, a dual-channel distribution bus room, an interbus wire outlet room, a module unit room, a feeder cable room and an emergency standby cable room. According to the invention, a power distribution mode of split-phase management and layered cutoff protection is adopted, so that maintenance personnel can quickly lock fault loops and fault current characteristics, split the fault loops and replace damaged parts, the maintenance process is efficient and convenient, and the downtime of equipment is shortened.

The invention relates to the technical field of intelligent power grids, in particular to a low-voltage draw-out type switch cabinet which comprises a cabinet body, a power grid arranged on the inner side wall of the cabinet body, a heat dissipation plate arranged on the inner side wall of the cabinet body, a plurality of static contacts arranged on the inner side wall of the cabinet body and a cleaning mechanism arranged on the inner side wall of the cabinet body and used for cleaning the power grid. The cleaning mechanism comprises two first electric sliding rails arranged on the inner side wall of the cabinet body, according to the low-voltage draw-out type switch cabinet, the overturning plate is driven by the first motor to rotate at multiple angles, the spraying head can evenly cover the outer corners of the cabinet body after the insect repellent is atomized, reptiles are dispersed from the source, and the low-voltage draw-out type switch cabinet is convenient to use. The cleaning mechanism can be quickly started, heat dissipation blocking and equipment faults caused by accumulation of dead insects are prevented, and it is guaranteed that the low-voltage draw-out type switch cabinet is always kept in a safe and stable working state in long-term operation.

The present application relates to a low-voltage drawer cabinet, and relates to the technical field of drawer cabinets, which comprises a cabinet body, wherein the cabinet body is provided with a plurality of installation cavities in a vertical direction, a drawer main body located in the installation cavities, and a circuit breaker is fixedly arranged in the drawer main body; the drawer main body is provided with a locking pin, a transmission shaft located in the drawer main body, and a handle fixed to one end of the transmission shaft and rotatably arranged on the outer side of the drawer main body, and the transmission shaft can rotate around its own axis when the handle is rotated; a linkage part for controlling the locking pin is provided on the outer periphery of the transmission shaft, a locking through hole is provided on the bottom side of the drawer main body, and a locking slot is provided on the bottom side of the installation cavity; an adjusting part for controlling the opening and closing of the circuit breaker is provided on the inner end portion of the transmission shaft; the present application is safer through the mechanical locking structure on the drawer main body compared with the electrical locking structure, thereby improving the safety performance of the drawer cabinet when used.

The utility model discloses a valve device and a centrally installed switchgear, the valve device comprises an upper valve plate, a lower valve plate, a first installation mechanism and a second installation mechanism, and the upper valve plate and the lower valve plate are arranged between the first installation mechanism and the second installation mechanism from top to bottom along the vertical direction; each of the first mounting mechanism and the second mounting mechanism comprises an upper valve rack, a lower valve rack, a gear and a pushing mechanism; the upper valve plate is connected with the upper valve rack, the lower valve plate is connected with the lower valve rack, the gear is arranged between the upper valve rack and the lower valve rack and meshed with the upper valve rack and the lower valve rack, and the pushing mechanism is connected with the upper valve rack. The pushing mechanism can drive the upper valve rack to ascend or descend so as to drive the gear to rotate, and the gear drives the lower valve rack to move in the direction opposite to the upper valve rack. The valve device is not prone to clamping stagnation, stable, reliable, simple in structure, few in spare and accessory parts, easy to machine and assemble and capable of effectively reducing cost.

The invention discloses a draw-out type high-low voltage switch cabinet, and relates to the technical field of electrical equipment, the draw-out type high-low voltage switch cabinet comprises a cabinet body, the inner wall of the cabinet body is provided with a chute, the front side of the cabinet body is provided with a movable door, the bottom of the cabinet body is provided with universal wheels, and the cabinet body is internally provided with a drawing device, a supporting device and a limiting device; a round rod is matched with a first spring, a piston block, a fixed cylinder and hydraulic oil, so that collision can be effectively reduced, damage to the cabinet body caused by the bearing plate is prevented, meanwhile, noise can be reduced, the use experience is improved, and the service life is prolonged; the trigger block is movably matched with the pressing rod, the sliding block, the sliding groove block, the second spring, the heart-shaped groove, the connecting rod, the buckling block and the trigger block to prevent the bearing plate from accidentally and completely falling off, use safety is ensured, the pressing rod, the second spring, the sliding groove block, the connecting rod, the buckling block, the trigger block and the pressing rod replace an existing push-pull type extraction mode, and the use speed of the handcart circuit breaker is increased.

The invention relates to the technical field of switch cabinets, and particularly discloses a high-voltage switch cabinet which comprises a cabinet body, a cabinet door is hinged to the front end of the cabinet body, a static contact is arranged in the cabinet body, and the high-voltage switch cabinet further comprises a handcart assembly, a pushing assembly and a protection mechanism which are arranged in the cabinet body. The pushing assembly comprises a screw rotationally arranged in the cabinet body and a moving block in threaded fit with the screw, the protection mechanism comprises a locking assembly and a buffer assembly, the locking assembly comprises a ratchet structure and a driving structure, and the driving structure is used for driving the ratchet structure to lock the screw in one direction when the moving block moves relative to the handcart. The buffering assembly comprises a rotating piece arranged at the end of the screw and a buffering structure. According to the invention, the pushing assembly can be locked when the movement of the handcart is subjected to resistance, so that the handcart is prevented from continuously moving and further being damaged, and meanwhile, the situation that the handcart suddenly stops moving and hurts an operator can be avoided.

The utility model relates to the field of handcart type switch devices, in particular to a valve device with a padlock and a switch cabinet. The padlock mechanism is used for solving the problem that an existing padlock mechanism is arranged on a valve, a worker needs to operate the padlock mechanism on the valve in a cabinet, and the risk of electric shock exists. The valve device with the padlock comprises a valve frame, a valve and a transmission mechanism are arranged on the valve frame, the transmission mechanism is provided with an action input component used for being matched with a circuit breaker handcart so as to transmit actions to the valve when the circuit breaker handcart is pushed, and the valve frame further comprises a handcart guide rail. A blocking and locking piece is movably arranged at the position, close to the front end, of the handcart guide rail, the blocking and locking piece has an unlocking state and a locking state for avoiding or blocking the circuit breaker handcart, and a padlock structure is arranged on the blocking and locking piece and is kept in the locking state after padlock. The blocking lock piece is arranged at the front end position of the handcart guide rail, so that a worker is prevented from entering the cabinet to be in contact with a valve which is possibly electrified, the operation is convenient, and the safety is improved at the same time.

The utility model discloses a switch cabinet drawer side lock hand-pull propulsion mechanism, which is used for a drawer to enter and exit into a switch cabinet, the switch cabinet comprises a bottom support plate, and the drawer is arranged on the bottom support plate; the drawer locking device further comprises a locking assembly, the locking assembly comprises an unlocking piece, a locking rod and a positioning plate, the unlocking piece and the locking rod are arranged on the drawer, the positioning plate is arranged on the bottom supporting plate, a plurality of grooves used for containing the locking rod are formed in the positioning plate, and the grooves are formed in the same side of the positioning plate. And the opening is communicated with the side edge of the positioning plate. According to the utility model, the locking assemblies respectively arranged on the drawer and the bottom supporting plate are adopted, a plurality of locking point positions are arranged, the position of the drawer can be accurately locked in the push-in and pull-out actions of the drawer, and the locking assemblies are independent of a connecting structure between the drawer and the switch cabinet and are not influenced by the heavy self-weight of the drawer, so that the service life is effectively ensured, and the safety of the switch cabinet is improved. And an accurate locking position is ensured.

A draw in and out apparatus and a cart apparatus transporting the same are disclosed. A draw in and out apparatus according to an aspect of the present disclosure may include a first support unit detachably coupled to an external distribution board; a second support unit movably coupled to the first support unit; a third support unit movably coupled to the second support unit; and a power unit detachably coupled to the third support unit, and configured to be coupled to or detachable from an external circuit breaker, wherein the power unit includes a key withdrawably accommodated in an insertion space provided in the circuit breaker; and a motor member coupled to the key and configured to rotate the inserted key in any one direction of the clockwise direction and counterclockwise direction.

A plateau type high-voltage removable soft start cabinet easy to dissipate heat comprises a cabinet body and functional chambers, the interior of the cabinet body is divided into a secondary instrument chamber, a handcart chamber, a main bus chamber, a cable chamber, a soft start chamber, a small bus chamber, an air cooling heat dissipation assembly, a front cabinet door, a rear cabinet door, a cabinet top pressure relief plate, a header and a hanging ring, and in addition, a secondary component and related accessories are further installed in the cabinet. The intelligent protection measurement and control device realizes protection and measurement functions of soft start, operation and soft stop of the high-voltage motor and remote communication, and the soft start intelligent control device mainly realizes intelligent control and monitoring of the vacuum circuit breaker, the bypass switch and the dry-type voltage-regulating soft starter. When the air cooling heat dissipation assembly is combined with the soft start intelligent control device for use, forced air convection can be intelligently generated between air in the main bus chamber, the cable chamber, the handcart chamber and the soft start chamber and outside air, so that the heat dissipation effect of the main bus chamber, the cable chamber, the handcart chamber and the soft start chamber is improved; therefore, the condensation phenomenon in each functional chamber of the cabinet body is effectively prevented.

A manual driving device for electrically operating a breaker drawer comprises a shell, a manual driving mechanism and a clutch mechanism linked with the manual driving mechanism, the manual driving mechanism comprises a motor and a first gear connected with the motor, and the clutch mechanism comprises a clutch and a second gear connected with the clutch. The driving mechanism and the clutch mechanism are in meshed connection through the first gear and the second gear, the structures of the manual driving mechanism and the clutch mechanism are improved, the two parts are integrated into one part, and the first gear and the second gear are protected by the shell, so that the complexity of the manual function of installing the breaker drawer can be reduced, and the installation efficiency of the breaker drawer is improved. And when the clutch mechanism and the manual driving mechanism are installed by personnel, the installation positions and different parts do not need to be distinguished, the installation and disassembly efficiency is improved through integrated arrangement, and the production cost and the manufacturing cost can be reduced.

The utility model provides a drawer-type low-voltage switch cabinet. The drawer-type low-voltage switch cabinet comprises a cabinet body and a heat dissipation system, the cabinet body comprises an accommodating space, a water cooling space and a drawer; the heat dissipation system comprises a water cooling assembly, a plurality of heat dissipation assemblies and a plurality of temperature sensors, each water cooling assembly comprises a water cooling coil pipe, a water supply pipeline, a circulating pipeline and a water pump arranged on the water supply pipeline, the water supply pipeline is communicated with the water inlet ends of the water cooling coil pipes, the circulating pipeline is communicated with the water outlet ends of the water cooling coil pipes, and the heat dissipation assemblies are heat dissipation fans. According to the drawer-type low-voltage switch cabinet provided by the utility model, the temperature sensor is installed in the accommodating space and used for monitoring the temperature in the drawer in real time, when the temperature is greater than the threshold value, the cooling fan is turned on for cooling, the water-cooling space is arranged at the bottom of the drawer, and the water-cooling coil pipe is installed in the space and used for cooling the drawer in a water-cooling manner. By adopting the two modes, the temperature in the drawer can be quickly reduced.

The invention relates to the technical field of low-voltage switch cabinets, and discloses a GCS-type low-voltage draw-out switch cabinet, which comprises a switch cabinet used for protecting components; the drawer is arranged on the switch cabinet and is in sliding connection with the switch cabinet, and various components are arranged in the drawer; the positioning unit is arranged on the drawer and used for fixing the position of the drawer in the switch cabinet; the positioning unit comprises a driving part, a transmission part connected with the driving part, a driven gear arranged on the drawer, two limiting racks engaged with the driven gear respectively, and two groups of limiting holes formed in the inner wall of the switch cabinet; the transmission part is connected with one of the limiting racks; a preset difference value exists between the depths of the two groups of limiting holes; through the rotation angle of the locking handle, the state of the component in the drawer is judged, the situation that when the component is in a test state, an operator opens a circuit breaker switch and loads a circuit is avoided, and then damage to the circuit breaker or other components is avoided.

The present invention belongs to the technical field of electrical devices. Disclosed is a primary-secondary integrated smart ring main unit. The smart ring main unit comprises a mechanism chamber, cable bushings, an explosion-proof valve seat, a cable chamber, an operating mechanism, a switch linkage lock, a linkage mechanism, a low-voltage cabinet, umbrella-skirt bushings, and a circuit-breaker apparatus, wherein the several cable bushings are mounted on a top plate of the cable chamber; the explosion-proof valve seat is mounted on the top plate of the cable chamber; the mechanism chamber is mounted above the cable chamber; the circuit-breaker apparatus is mounted inside the mechanism chamber; the several umbrella-skirt bushings are mounted inside the mechanism chamber; the operating mechanism is mounted inside the mechanism chamber, and is arranged at the front end of the circuit-breaker apparatus; the linkage mechanism is arranged above the operating mechanism; the low-voltage cabinet is mounted above the mechanism chamber; and the switch linkage lock is mounted on the linkage mechanism. The problem in the prior art whereby switches of a ring main unit cannot be operated separately, easily resulting in the inability to open cabinet doors or the risk of electric shock when a fault occurs, is solved. The safety factor of the ring main unit is improved, and the universality thereof is increased.

The invention discloses a switch cabinet and an interlocking device for a switch cabinet circuit breaker, and relates to the technical field of switch cabinets. The switch cabinet comprises a switch cabinet body, an insulating column is fixed to the rear side of the switch cabinet body in a penetrating mode, and first power connection columns are symmetrically fixed in the insulating column in a penetrating mode; the mounting assembly comprises two parallel supporting plates fixed in the switch cabinet main body, and baffle plates are movably connected in movable openings in the supporting plates; the power connection assembly comprises a lock cylinder fixed to the edge of the front side of the bottom of the lower supporting plate, and locking assemblies are symmetrically fixed to the upper portion of the peripheral side of the lock cylinder; each locking assembly comprises a connecting sleeve fixed to the upper portion of the peripheral side of the lock cylinder, a rotating column is movably connected into each connecting sleeve, and an elastic plate is fixed to the front end of each rotating column; the fixing frame is fixed in front of the opening in the top of the upper supporting plate. According to the invention, the baffle plate is arranged in the switch cabinet, and the power connection assembly is blocked by the baffle plate during maintenance, so that misoperation and wrong power connection of an operator are well prevented.

The utility model relates to a novel electric handcart circuit breaker position switching operation mechanism, which belongs to the field of electric handcart switch cabinets and is characterized in that a front-end thread of a screw rod penetrates through a threaded hole in the front side surface of a chassis to abut against the front side wall of an electric handcart chamber, and a rear-end thread of the screw rod penetrates through a threaded hole in the rear side surface of the chassis to abut against the rear side wall of the electric handcart chamber; a threaded sleeve is rotationally arranged on the chassis corresponding to the middle position of the screw rod; meshing teeth are arranged on the outer side wall of the threaded sleeve; by arranging the lead screw, the rotation driving piece and the gears, the handcart circuit breaker can be automatically switched between the test position and the working position, meanwhile, the mechanical driving can be matched with an external control cabinet and a remote controller to achieve remote operation, the operation is convenient, and the operation efficiency is improved. And the unattended operation capability is improved.

The invention discloses an automatic circuit breaker handcart for a switch cabinet, and belongs to the technical field of circuit breakers, the automatic circuit breaker handcart for the switch cabinet comprises a bottom frame, the bottom frame is movably provided with a circuit breaker handcart, the circuit breaker handcart is provided with a plurality of arc extinguish chambers, and the arc extinguish chambers are provided with moving contacts. A front frame is installed at one end, far away from the circuit breaker handcart, of the bottom frame, an aviation socket located on one side, far away from the circuit breaker handcart, of the front frame is arranged on the bottom frame, a signal lead is installed on the aviation socket, and a pushing assembly connected with the circuit breaker handcart is arranged between the circuit breaker handcart and the front frame. A movable transmission assembly movably connected with the pushing assembly is arranged in the bottom frame, moving assemblies movably connected with the movable transmission assembly are arranged on the two sides of the bottom frame, a camera and a temperature sensor are installed on the top of one side of the front frame, and a third contact sensor is installed on the bottom frame. The device has the advantages of intelligent detection, ordered movement, full contact of moving and static contacts, safety, reliability, convenient operation, simplicity, convenience and practicability.

The utility model relates to the technical field of switch cabinets, and in particular to a metal armored drawer switch cabinet, comprising a cabinet body and a plurality of drawer cabinets, wherein the interior of the cabinet body is divided into a plurality of mutually independent cavities by partitions, wherein a plurality of heat conducting sheets are arranged inside the cavities, and the heat conducting sheets are spliced ​​to form slots for accommodating the insertion of the drawer cabinets, and heat dissipation fins are arranged on the outer side walls of the heat conducting sheets, and a gap is reserved between the heat conducting sheets and the inner side walls of the cabinet body, and a heat dissipation mechanism for blowing air to each cavity at the same time is arranged on the back of the cabinet body. By arranging the heat conducting sheets, heat dissipation fins and heat dissipation mechanism, the heat of the electrical components inside the drawer cabinet when working can be quickly extracted, the heat dissipation mechanism drives the flow of air, the heat dissipation fins increase the heat exchange area, the heat dissipation effect is better, and at the same time, the influence of each drawer cabinet on each other is avoided.

The utility model provides a drawer base and a drawer type circuit breaker, and belongs to the technical field of electrical equipment. The utility model provides a drawer seat. The drawer seat comprises a shell, a secondary wiring top plate, a secondary wiring terminal, a transmission part and a cover body, a through groove is formed in the side wall of the shell. And the end part of the secondary wiring top plate is arranged in the through groove. And the secondary wiring terminal is arranged on the shell. The transmission piece is arranged on the inner wall of the shell and opposite to the end portion of the secondary wiring top plate, and the transmission piece can drive the secondary wiring top plate to move. The cover body is arranged on the outer wall of the shell and covers the through groove. According to the invention, the cover body is arranged on the drawer seat, and the cover body is used for protecting the movement of the transmission part on the movement path of the transmission part, so that the influence of the external environment on the movement of the transmission part can be reduced, and the probability that the secondary wiring terminal cannot be separated from the circuit breaker body due to the clamping stagnation of the transmission part can be reduced. And the use reliability of the drawer type circuit breaker is improved.

The invention relates to the technical field of switch cabinets, and particularly discloses a high-voltage switch cabinet which comprises a cabinet body and a plurality of drawers, a supporting mechanism comprises a supporting plate, a telescopic plate set and a first locking assembly, the telescopic plate set comprises a left end plate hinged to the supporting plate and a right end plate slidably installed on the left end plate, and the drawers are installed on the right end plate. When the drawer is drawn out of the cabinet body, the supporting plate and the cabinet body are fixedly connected through the first locking assembly, then the telescopic plate set deflects downwards, the installation mechanism comprises a connecting hook and a positioning assembly, when the drawer is disassembled, the connecting hook is located at the right end of the right end plate, and therefore most of the drawer is located on the telescopic plate set when the telescopic plate set deflects downwards, and when the drawer is installed, the positioning assembly is located at the right end of the right end plate. The connecting hook is moved to the left end of the right end plate, so that a small part of the drawer is located on the telescopic plate group when the telescopic plate group deflects upwards; the drawer mounting structure has the beneficial effects that collision during drawer mounting is avoided, and the mounting process is more labor-saving.

The invention discloses a low-voltage withdrawable switch cabinet, including a switch cabinet assembly, including a cabinet body, a drawer, a mounting plate, a propulsion mechanism and an adjustment sleeve, wherein the drawer is plugged into the cabinet body, the mounting plate is arranged in the drawer, the propulsion mechanism is located at the top of the mounting plate, and the adjustment sleeve is arranged on one side of the propulsion mechanism; a locking assembly is arranged on one side of the propulsion mechanism, and includes a positioning plate, a locking block, a baffle, a supporting member, a pushing member, a rotating member, a positioning member and an extruding member. The beneficial effects of the invention are as follows: through the arrangement of the locking assembly, when the drawer is not pushed into place, the propulsion mechanism can be locked so that it cannot be rotated and adjusted, which can effectively avoid safety hazards such as false connection caused by operation before it is fully in place, reduce the risk of electrical accidents, and avoid the burning of connectors due to incorrect operation, extend the service life of the equipment, and reduce maintenance costs.

The present invention relates to a door interlock device for a switchboard and, more specifically, to a door interlock device for a switchboard, which in a situation where opening of a switchboard door is restricted, can selectively release a door interlock function so as to open the door. By the door interlock device for a switchboard, according to the present invention, in a situation where opening of a switchboard door is restricted by the door interlock device, the interlock function of the door interlock device can be selectively released so that the switchboard door can be opened.

The utility model relates to a primary plug-in of a drawer type switch cabinet, which comprises a shell and a wiring terminal group arranged on the shell, the shell is provided with at least one group of rear mounting cavity and front mounting cavity, the wiring terminal group comprises a connector bar and a connecting plug, the front part of the connector bar is arranged in the rear mounting cavity of the shell, and the front part of the connector bar is arranged in the front mounting cavity of the shell. The rear part of the connecting plug is arranged in a front mounting cavity of the shell, the front part of the line bank and the rear part of the connecting plug are connected with the connecting bar between the front part of the line bank and the rear part of the connecting plug and are in conductive arrangement, the connecting bar is U-shaped and is arranged in a rear mounting cavity of the shell, two ends of the U-shaped connecting bar are provided with elastic inserting sheets, and the elastic inserting sheets are arranged in the rear mounting cavity of the shell. The two inserting pieces are elastically clamped in the bayonets on the two opposite sides of the rear installation cavity respectively to achieve abutting positioning. The two ends of the connecting bar can abut against the two opposite sides of the rear mounting cavity, and therefore shaking of the connecting bar is reduced.

The utility model belongs to the field of switch cabinets, in particular to a high-voltage switch cabinet handcart locking front lower door interlocking device, which comprises a cabinet body, a front middle door and a front lower door, a lock catch is arranged on the inner side of the front middle door, a chassis truck is arranged on the cabinet body close to the front middle door, and the chassis truck is provided with a chassis truck operation hole and a door interlocking hook. The door interlocking hook can be controlled to be clamped with the lock catch through the chassis operation hole, the front middle door is locked through mechanical interlocking, an electromagnetic lock is replaced by the mechanical interlocking, and the reliability of the product is improved.

The utility model discloses a drawer unit structure type low-voltage switch cabinet, which relates to the technical field of low-voltage switch cabinets and comprises a cabinet body. A plurality of small drawers are arranged on the inner side of the cabinet body and are sequentially arranged from top to bottom, and a plurality of medium-sized drawers are arranged at the bottom of the lowermost small drawer; the plurality of medium-sized drawers are sequentially arranged from top to bottom, and a large bearing hopper is arranged at the bottom of the lowermost medium-sized drawer and is fixed on the cabinet body through bolts; a lifting frame is arranged on the inner side of the cabinet body, and a fan is embedded in the inner side of the lifting frame; according to the utility model, the plurality of small-sized drawers and the plurality of medium-sized drawers can bear components with different sizes, the use is more reasonable, the large chassis is arranged in the large-sized bearing hopper below, and the fan moves up and down along with the lifting frame, so that the components at different positions can be blown to dissipate heat, and the temperature and the stability of the operation of the components are ensured.

The utility model discloses a novel dual-power multi-standby plug-in low-voltage switch cabinet, which comprises a base, a bus coupler cabinet mounted in the middle of the top end of the base, a first wire inlet cabinet mounted on one side of the top end of the base, and a second wire inlet cabinet mounted on the other side of the top end of the base, drawer type circuit breakers are installed in the middle of the bus coupler cabinet, the middle of the first wire inlet cabinet and the middle of the second wire inlet cabinet respectively, a change-over switch is installed on one side of the top of the front face of the bus coupler cabinet, an automatic switching microcomputer is installed on the other side of the top of the front face of the bus coupler cabinet, and two wire outlet drawers are installed at the bottom of the first wire inlet cabinet and the bottom of the second wire inlet cabinet respectively. According to the novel dual-power-supply multi-standby plug-in low-voltage switch cabinet, the two wire inlet cabinets and the bus coupler cabinet of the low-voltage switch cabinet adopt electrical interlocking to ensure that the three wire inlet cabinets and the bus coupler cabinet cannot be switched on at the same time, and a standby power automatic switching microcomputer and a change-over switch are additionally arranged on the contact cabinet to realize three switching functions of standby power automatic switching, manual operation and stopping.

A switch cabinet provided by the present invention comprises a switch cabinet shell, an air draft assembly, a circuit breaker and contact device, a partition plate assembly and fan blades, the switch cabinet shell is provided with a first air inlet and a first air outlet located at the top, the position of the first air outlet is higher than that of the first air inlet, and a handcart chamber is arranged in the switch cabinet shell. Under the condition that the air draft assembly is started, the switch cabinet shell sucks air along the first air inlet and exhausts air along the first air outlet; the partition plate assembly is arranged in the switch cabinet shell, an airflow channel is defined in the switch cabinet shell through partition of the partition plate assembly, a second air inlet is formed in one end of the airflow channel, and the other end of the airflow channel is communicated with the handcart chamber and is opposite to a pole cavity or a contact device of the circuit breaker. And external air is sucked from the second air inlet and flows to the pole cavity of the circuit breaker, so that the sliding connection point in the circuit breaker is directly cooled, or air is blown to the contact device, and therefore, the cavity of the contact device or the circuit breaker can be directly and efficiently cooled.