High-low voltage switch cabinet and bottom moisture-proof structure thereof

Abstract

The invention discloses a high-low voltage switch cabinet and a bottom moisture-proof structure thereof, and relates to the technical field of high-low voltage switch cabinets, the high-low voltage switch cabinet comprises a cabinet body, the front end of the cabinet body is movably connected with a cabinet door, the bottom end of the cabinet body is fixedly connected with an extension cabinet, and the upper end and the lower end of the interior of the cabinet body are fixedly connected with a group of slide rails in bilateral symmetry; the front ends of the sliding rails close to one side of the cabinet door are closed, and the front ends of the sliding rails on the other side are open. Through the arrangement of the movable mounting mechanism, the mounting frame is pulled outwards, at the moment, a sliding supporting rod and a sliding head slide outwards at the same time, meanwhile, an electric telescopic rod is controlled to push an extending frame to slide out of a connecting groove, a rotating rod rotates on the opposite side of a driving block, and meanwhile the whole mounting frame can move outwards with the rotating rod as the axis; therefore, equipment can be conveniently installed or detected and maintained, the internal layout of the cabinet body is prevented from influencing the maintenance space of maintenance personnel and the maintenance efficiency, and the internal layout of the cabinet body can be conveniently and effectively arranged.

Description

Technical Field

[0001] The invention relates to the technical field of high and low voltage switch cabinets, in particular to a high and low voltage switch cabinet and a moisture-proof structure at the bottom thereof. Background Art

[0002] High and low voltage distribution cabinets are distribution equipment used for power distribution, control, metering and cable connection in power supply systems. Generally, power supply bureaus and substations use high voltage switch cabinets, which are then stepped down by transformers and led out to low voltage distribution cabinets. Low voltage distribution cabinets are then led to distribution boards, control boxes and switch boxes for each power user. The equipment inside is a distribution device that is assembled into one by some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices to meet the design functional requirements.

[0003] Referring to the Chinese invention patent, the publication number is: CN 116526315 B, and the name is: A high and low voltage switch cabinet dehumidification structure and dehumidification method thereof, which discloses a high and low voltage switch cabinet dehumidification structure and dehumidification method thereof, including a cabinet, one end and the bottom of the cabinet are fixedly installed with the same L-shaped side frame, and the top of one end of the L-shaped side frame is provided with four air inlets distributed in an annular manner with equal distances, and an air inlet assembly is arranged on the air inlet, and the top of the other end of the cabinet is provided with multiple air outlets, and a protective frame is fixedly installed on one side of the air outlet, and a heating assembly is arranged on the inner wall of the side of the L-shaped side frame close to the air inlet. The present invention allows the net bag and the desiccant to perform a slow lifting operation in the cabinet, realizes a multi-position moisture absorption operation, replaces the existing fixed drying and dehumidification structure, and blows the hot air evenly inside the switch cabinet, so that the electrical appliances inside the switch cabinet can be exposed to the hot air, realizes the dehumidification operation of hot air ventilation and direct drying at the same time, and enables the desiccant to be used multiple times.

[0004] 1. When the circuit inside the cabinet fails and needs routine inspection or maintenance, or when the back of the equipment accessories fails, the complex circuits and fixed connection accessories in the cabinet need to be disassembled in part or even in large areas to facilitate the maintenance or replacement of the parts that need maintenance. Therefore, maintenance is restricted to a certain extent and maintenance time is extended, which may cause unnecessary losses;

[0005] 2. Secondly, the fan is directly aimed at the internal equipment for moisture-proof treatment. However, due to the high humidity of the environment or the difference between the heated air and the inside of the cabinet, the heat of the wind blown by the fan is less than the heat generated by the equipment working for a long time. On the contrary, the results are the same, which may cause it to condense into water droplets and increase the humidity inside the cabinet. Secondly, the small water droplets are easily affected by the air volume and penetrate into the equipment through the heat dissipation port or gap, causing a short circuit. Summary of the invention

[0006] Technical issues solved

[0007] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a high and low voltage switch cabinet and a bottom moisture-proof structure thereof.

[0008] Technical Solution

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high and low voltage switch cabinet, comprising a cabinet body, a cabinet door is movably connected to the front end of the cabinet body, and an extension cabinet is fixedly connected to the bottom end of the cabinet body, a group of left-right symmetrical slide rails are fixedly connected to the upper and lower ends of the interior of the cabinet body, the front ends of the slide rails on the side close to the cabinet door are all closed, and the front ends of the slide rails on the other side are all open, a movable mounting device mechanism is arranged inside the cabinet body, an automatic locking mechanism is fixedly connected to the side of the cabinet body close to the cabinet door, a distribution box is fixedly connected to the rear side of the cabinet body, and an electric folding and retracting opening is movably connected to the side of the cabinet body away from the cabinet door connection.

[0010] The movable mounting mechanism comprises a sliding support rod, a driving block, a rotating rod and a mounting frame, the driving block is provided with two and is symmetrically fixedly connected to the outer side of the sliding support rod, the two ends of the rotating rod are respectively movably connected to the opposite side of the end of the driving block away from the sliding support rod through bearings, the mounting frame is fixedly connected to the outer side of the rotating rod, and the side of the mounting frame away from the driving rod is fixedly connected with two front-to-rear symmetrical sliders, and the sliders are matched with the slide rails, the upper and lower ends of the sliding support rods are movably connected with pulleys, and the pulleys are slidably connected to the inside of the slide rails close to the cabinet door.

[0011] As mentioned above, the movable mounting device mechanism also includes an electric telescopic rod, an extension frame and a universal wheel. The electric telescopic rod is provided with two and its output ends are respectively fixedly connected to the two sides of the bottom end of the extension frame. The universal wheel is provided with two and is respectively fixedly connected to the two sides of the bottom end of the extension frame.

[0012] As mentioned above, a connecting hole is provided on the front side of the bottom end of the mounting frame, a connecting groove is provided on the side of the mounting frame close to the cabinet door, and the connecting groove is communicated with the connecting hole, the interior of the mounting frame is fixedly connected with high and low voltage equipment, the top end of the electric telescopic rod is fixedly connected to the interior of the connecting hole, the top end of the extension frame is located inside the connecting hole, and an opening is provided on the mounting frame on the opposite side of the connecting hole.

[0013] As mentioned above, the automatic locking mechanism includes a locking groove, a pull rope, an extrusion spring, a limit block, a magnet and a fixing bar. The limit blocks are respectively fixedly connected to the two ends of the extrusion spring, and the magnets are respectively fixedly connected to the connection between the limit blocks and the extrusion spring, and the magnetic poles of the magnets are opposite. One end of the pull rope is divided into two and respectively fixedly connected to the opposite sides of the magnet, and the other end of the pull rope is connected to the fixing bar.

[0014] The locking groove is T-shaped in both appearance and cross section. The locking groove is fixedly connected to the side of the cabinet body close to the cabinet door. The limit block, spring and magnet are all located inside the locking groove, and the end of the pull rope away from the spring passes through the locking groove. When the limit blocks are close to each other, they are adapted to the rear end of the locking groove.

[0015] As mentioned above, one end of the limit block continues to the outside of the locking groove and is fixedly connected with a ring, and the ring is sleeved on the outside of the sliding support rod, and the mounting frame is fixedly connected to two upper and lower symmetrical guide wheels on the side close to the cabinet door, and the end of the pull rope away from the extrusion spring passes through the hub of the guide wheel, and one end of the fixed block passes through the connecting groove and is fixedly connected to the output end of the electric telescopic rod.

[0016] A moisture-proof structure at the bottom of a high and low voltage switch cabinet, wherein an inspection door is provided on one side of the extension cabinet, and a heat dissipation vent is fixedly connected to one end of the extension cabinet away from the inspection door, and a heat dissipation and moisture-proof mechanism is movably connected to the interior of the extension cabinet via a slide-out guide rail.

[0017] As mentioned above, the heat dissipation and moisture-proof mechanism includes a base, a dehumidification fan, a return spring and an extension cabinet. A mounting hole is opened at the top of the base, and the dehumidification fan is fixedly connected to the inside of the mounting hole. The return spring is symmetrically arranged on the left and right, and one end of the return spring is respectively fixedly connected to both sides of one end of the base away from the extension cabinet, and the other end of the return spring is respectively fixedly connected to both sides of one end of the extension cabinet close to the base.

[0018] As mentioned above, the base and the extension cabinet have the same volume and are movably connected by a hinge at the top end on one side close to each other, and the base and the extension cabinet are adapted to the interior of the extension cabinet when folded and stacked, and a plurality of moisture-proof rods are fixedly installed in the internal array of the extension cabinet, and a dehumidifier is placed inside the moisture-proof rods.

[0019] Beneficial effects:

[0020] Compared with the prior art, the high and low voltage switch cabinet and its bottom moisture-proof structure have the following beneficial effects:

[0021] The movable mounting device mechanism of the present invention is provided to pull the mounting frame outward, at this time the sliding support rod and the slider slide outward at the same time, and at the same time the electric telescopic rod is controlled to push the extension frame to slide out of the connecting groove, when the universal wheel contacts the ground, the output end of the electric telescopic rod will drive the fixing bar to slide downward during the sliding process, at this time the mounting frame is rotated to one side, the rotating rod rotates on the opposite side of the driving block, and then the universal wheel moves in an arc trajectory on the ground toward the cabinet door side, and at the same time the entire mounting frame can be moved outward with the rotating rod as the axis, when maintenance or inspection is completed, the mounting frame is pushed to move to the front of the cabinet, the electric telescopic rod is controlled to pull the extension frame upward for collection, and then the mounting frame is pushed into the cabinet, at this time the mounting frame moves the inside of the cabinet, thereby facilitating the installation or inspection of maintenance equipment, preventing the internal layout of the cabinet from affecting the maintenance space of the maintenance personnel and affecting the maintenance efficiency, and secondly facilitating the effective layout of the cabinet interior.

[0022] Second, the present invention is provided with an automatic locking mechanism. When the collar follows the sliding support rod to slide outward from the inner side of the locking groove, when the slider is completely separated from the slide rail, the collar drives the limit block to move to the front end of the locking groove. When the movable mounting device moves outward, the pull rope is loosened, and the extrusion spring reacts on the limit block and the magnet, causing them to slide in different directions until they are engaged with the two ends of the front side inside the locking groove, thereby locking the forward and backward movement position of the sliding support bar. When the fixed block pulls the pull rope to slide and stop in the guide wheel hub, the pull rope has not reached the maximum stretching length, and the output end of the electric telescopic rod is controlled to shrink to the initial position. During this process, when the fixed bar moves more than twice the distance between the lowest point and the guide wheel, the pull rope begins to tighten, so that the other end thereof pulls the two reset springs that attract each other at this time to squeeze and shrink inward. When the extension frame is completely retracted to the inside of the bottom end of the installation, the limit blocks are consistent with the internal spacing of the rear section of the locking groove plus their own thickness, which is conducive to ensuring that when the mounting frame is moved to the outside of the cabinet for maintenance, the mounting frame is prevented from shaking back and forth, causing collision between the equipment and the cabinet, causing unnecessary losses.

[0023] 3. The present invention starts the dehumidification fan through the heat dissipation and moisture-proof mechanism, and the dehumidification wind is blown to the bottom of the cabinet through the moisture-proof rod, thereby preventing moisture accumulation at the bottom of the cabinet and accelerating the drying degree of the internal space of the cabinet. At the same time, the heat of the dehumidification fan is dissipated from the heat dissipation vents. When the environment is relatively dry, the dehumidification fan is not started, and the moisture-proof rod absorbs moisture at the bottom of the cabinet to keep it dry. When the moisture-proof rod needs to be replaced, open the inspection door and slide it out from the inside of the extension cabinet through the sliding guide rail, and then open the extension cabinet outward to replace the moisture-proof rod.

[0024] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a side view stereoscopic structural schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the extension cabinet of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional connection structure of the mounting frame of the present invention;

[0029] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 7 It is a schematic diagram of the connection structure of the connection hole of the present invention;

[0032] Figure 8 It is a schematic diagram of the connection structure of the electric telescopic rod of the present invention;

[0033] Fig. 9 It is a schematic diagram of the pull rope connection structure of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the heat dissipation and moisture-proof mechanism of the present invention.

[0035] In the figure: 1. cabinet; 2. extension cabinet; 3. slide rail; 4. movable mounting mechanism; 401. sliding support rod; 402. drive block; 403. rotating rod; 404. mounting frame; 405. electric telescopic rod; 406. extension frame; 407. universal wheel; 5. cabinet door; 6. automatic locking mechanism; 601. locking groove; 602. pull rope; 603. extrusion spring; 604. limit block; 605. magnet; 606. fixing strip; 7. electric folding and retracting mouth; 8. slider; 9. connecting hole; 10. connecting groove; 11. high and low voltage equipment; 12. collar; 13. guide wheel; 14. inspection door; 15. heat dissipation vent; 16. heat dissipation and moisture-proof mechanism; 1601. base; 1602. dehumidification fan; 1603. reset spring; 1604. extension cabinet; 17. mounting hole; 18. moisture-proof rod. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1-10 As shown, the present invention provides a technical solution: a high and low voltage switch cabinet, including a cabinet body 1, a cabinet door 5 is movably connected to the front end of the cabinet body 1, and an extension cabinet 2 is fixedly connected to the bottom end of the cabinet body 1, a group of left-right symmetrical slide rails 3 are fixedly connected to the upper and lower ends of the cabinet body 1, the front ends of the slide rails 3 on the side close to the cabinet door 5 are all closed, and the front ends of the slide rails 3 on the other side are all open, a movable device installation mechanism 4 is arranged inside the cabinet body 1, an automatic locking mechanism 6 is fixedly connected to the side of the cabinet body 1 close to the cabinet door 5, a distribution box is fixedly connected to the rear side of the cabinet body 1, and an electric folding and retracting opening 7 is movably connected to the side of the cabinet body 1 away from the connection with the cabinet door 5.

[0038] like Figure 1-9 As shown, the movable device object mechanism 4 includes a sliding support rod 401, a driving block 402, a rotating rod 403 and a mounting frame 404. The driving block 402 is provided with two and is symmetrically fixedly connected to the outer side of the sliding support rod 401. The two ends of the rotating rod 403 are respectively movably connected to the opposite side of the end of the driving block 402 away from the sliding support rod 401 through bearings. The mounting frame 404 is fixedly connected to the outer side of the rotating rod 403. The side of the mounting frame 404 away from the driving rod is fixedly connected with two front-to-back symmetrical sliders 8, and the sliders 8 are matched with the slide rails 3. The upper and lower ends of the sliding support rod 401 are movably connected with pulleys, and the pulleys are slidably connected to the inside of the slide rail 3 near the cabinet door 5. The movable device object mechanism 4 It also includes an electric telescopic rod 405, an extension frame 406 and a universal wheel 407. Two electric telescopic rods 405 are provided and their output ends are respectively fixedly connected to the two sides of the bottom end of the extension frame 406. Two universal wheels 407 are provided and are respectively fixedly connected to the two sides of the bottom end of the extension frame 406. A connecting hole 9 is provided on the front side of the bottom end of the mounting frame 404. A connecting groove 10 is provided on the side of the mounting frame 404 close to the cabinet door 5, and the connecting groove 10 is connected to the connecting hole 9. The interior of the mounting frame 404 is fixedly connected with high and low voltage equipment 11. The top end of the electric telescopic rod 405 is fixedly connected to the interior of the connecting hole 9. The top end of the extension frame 406 is located inside the connecting hole 9, and the mounting frame 404 on the opposite side of the connecting hole 9 is provided with an opening.

[0039] By pulling the mounting frame 404 outward, the sliding support rod 401 and the slider 8 slide outward at the same time, and the electric telescopic rod 405 is controlled to push the extension frame 406 to slide out of the connecting groove 10. When the universal wheel 407 contacts the ground, the output end of the electric telescopic rod 405 will drive the fixing bar 606 to slide downward during the sliding process. At this time, the mounting frame 404 is rotated to one side, and the rotating rod 403 rotates on the opposite side of the driving block 402. Then the universal wheel 407 moves in an arc trajectory on the ground toward the cabinet door 5. At the same time, the entire mounting frame 404 can be moved outward with the rotating rod 403 as the axis. When the movement, maintenance or inspection is completed, the mounting frame 404 is pushed to the front of the cabinet 1, the electric telescopic rod 405 is controlled to pull the extension frame 406 upward for collection, and then the mounting frame 404 is pushed into the cabinet 1. At the same time, the sliding support rod 401 drives the limit block 604 to slide toward the rear end of the locking groove 601 through the ring 12 to move it to the initial position. At this time, the mounting frame 404 moves the inside of the cabinet 1, which is conducive to facilitating the installation or inspection of maintenance equipment, preventing the internal layout of the cabinet 1 from affecting the maintenance space of maintenance personnel and affecting the maintenance efficiency, and secondly facilitating the effective layout of the interior of the cabinet 1.

[0040] like Figure 1-9 As shown, the automatic locking mechanism 6 includes a locking groove 601, a pull rope 602, an extrusion spring 603, a limit block 604, a magnet 605 and a fixing strip 606. The limit blocks 604 are fixedly connected to the two ends of the extrusion spring 603, respectively. The magnets 605 are fixedly connected to the connection between the limit blocks 604 and the extrusion spring 603, and the magnetic poles of the magnets 605 are opposite. One end of the pull rope 602 is divided into two and fixedly connected to the opposite sides of the magnet 605, and the other end of the pull rope 602 is connected to the fixing strip 606. The locking groove 601 is T-shaped in appearance and cross-section. The locking groove 601 is fixedly connected to one side of the cabinet body 1 near the cabinet door 5. The limit block 604, the spring and the magnet are all located inside the locking groove 601, and the end of the pull rope 602 away from the spring passes through the locking groove 601. When the limit blocks 604 are close to each other, they are adapted to the rear end of the locking groove 601. One end of the limit block 604 extends to the outside of the locking groove 601 and is fixedly connected to a ring 12, and the ring 12 is sleeved on the outside of the sliding support rod 401. The mounting frame 404 is fixedly connected to two upper and lower symmetrical guide wheels 13 on the side close to the cabinet door 5. The end of the pull rope 602 away from the extrusion spring 603 passes through the hub of the guide wheel 13, and one end of the fixed block passes through the connecting groove 10 and is fixedly connected to the output end of the electric telescopic rod 405.

[0041] The ring 12 follows the sliding support rod 401 to slide outward from the inner side of the locking groove 601. When the slider 8 is completely detached from the slide rail 3, the ring 12 drives the limit block 604 to move to the front end of the locking groove 601. When the movable mounting device 4 moves outward, the pull rope 602 becomes loose, and the extrusion spring 603 reacts on the limit block 604 and the magnet 605, causing them to slide in different directions until they are engaged with the two ends of the front side of the locking groove 601, thereby locking the forward and backward movement position of the sliding support bar. When the fixed block pulls the pull rope 602 to slide and stop in the hub of the guide wheel 13, the pull rope 602 has not reached the maximum stretching length, and the control electric The output end of the movable telescopic rod 405 shrinks to the initial position. During this process, when the fixed bar 606 moves more than twice the distance from the lowest point to the guide wheel 13, the pull rope 602 begins to tighten, so that the other end thereof pulls the two return springs 1603 which are attracted to each other at this time to squeeze and shrink inward. When the extension frame 406 is completely retracted to the inside of the bottom end of the installation, the limit blocks 604 are consistent with the internal spacing of the rear section of the locking groove 601 plus their own thickness, which is beneficial to ensure that when the mounting frame 404 is moved to the outside of the cabinet for maintenance, it is prevented from shaking back and forth, causing a collision between the equipment and the cabinet body 1, causing unnecessary losses.

[0042] A moisture-proof structure at the bottom of a high and low voltage switch cabinet, a maintenance door 14 is opened on one side of an extension cabinet 2, and a heat dissipation vent 15 is fixedly connected to the end of the extension cabinet 2 away from the maintenance door 14, and a heat dissipation moisture-proof mechanism 16 is movably connected to the interior of the extension cabinet 2 through a slide-out guide rail.

[0043] like Figure 1 , Figure 2 , Figure 3 and Fig.10 As shown, the heat dissipation and moisture-proof mechanism 16 includes a base 1601, a dehumidification fan 1602, a return spring 1603 and an extension cabinet 1604. A mounting hole 17 is opened at the top of the base 1601, and the dehumidification fan 1602 is fixedly connected to the inside of the mounting hole 17. The return spring 1603 is symmetrically arranged on the left and right. One end of the return spring 1603 is respectively fixedly connected to the two sides of the end of the base 1601 away from the extension cabinet 1604, and the other end of the return spring 1603 is respectively fixedly connected to the two sides of the end of the extension cabinet 1604 close to the base 1601. The base 1601 and the extension cabinet 1604 have the same volume and are movably connected to each other at the top of one side close to each other through a hinge. When the base 1601 and the extension cabinet 1604 are folded and stacked, they are adapted to the interior of the extension cabinet 2. A plurality of moisture-proof rods 18 are fixedly installed in the internal array of the extension cabinet 1604, and a dehumidifier is placed inside the moisture-proof rods 18.

[0044] By starting the dehumidification fan 1602, the dehumidification wind will be blown to the bottom of the cabinet 1 through the moisture-proof rod 18, thereby preventing moisture accumulation at the bottom of the cabinet 1 and accelerating the drying degree of the internal space of the cabinet 1. At the same time, the heat of the dehumidification fan 1602 is dissipated from the heat dissipation vent 15. When the environment is relatively dry, the dehumidification fan 1602 is not started, and the moisture-proof rod 18 absorbs moisture at the bottom of the cabinet 1 to keep it dry. When the moisture-proof rod 18 needs to be replaced, open the inspection door 14 and slide it out from the inside of the extension cabinet 2 through the sliding guide rail, and then open the extension cabinet 1604 outward to replace the moisture-proof rod 18.

[0045] Working principle: When in use, first control the electric folding and retracting opening 7 to open upwards, and at the same time, pull the mounting frame 404 outward by performing line detection or power off on the distribution box from the side. At this time, the sliding support rod 401 and the slider 8 slide outward at the same time, and the ring 12 follows the sliding support rod 401 to slide outward from the inside of the locking groove 601. When the slider 8 completely falls off the slide rail 3, the ring 12 drives the limit block 604 to move to the front end of the locking groove 601, and at the same time controls the electric telescopic rod 405 to push the extension frame 406 to slide out of the connecting groove 10. At this time, the pull rope 602 becomes loose, and the extrusion spring 603 reacts on the limit block 604 and the magnet 605 to make them slide in different directions. Until it is engaged with the two ends of the front side of the locking groove 601, thereby locking the forward and backward movement position of the sliding support bar. When the universal wheel 407 contacts the ground, the output end of the electric telescopic rod 405 will drive the fixed bar 606 to slide downward during the sliding process. During this process, the fixed block pulls the pull rope 602 to slide in the hub of the guide wheel 13 and stops. The pull rope 602 has not reached the maximum stretching length. At this time, the mounting frame 404 is rotated to one side, and the rotating rod 403 rotates on the opposite side of the driving block 402. Then the universal wheel 407 moves in an arc trajectory on the ground toward the cabinet door 5 side. At the same time, the entire mounting frame 404 can be moved outward with the rotating rod 403 as the axis. When maintenance or inspection is completed, push the installation The bracket 404 moves to the front of the cabinet 1, and the electric telescopic rod 405 is controlled to pull the extension bracket 406 upward for collection. During this process, when the fixed bar 606 moves more than twice the distance from the lowest point to the guide wheel 13, the pull rope 602 begins to tighten, so that the other end thereof pulls the two return springs 1603 which are attracted to each other at this time to squeeze and shrink inward. When the extension bracket 406 is completely retracted to the inside of the bottom end of the installation, the spacing between the limit blocks 604 plus their own thickness is consistent with the internal spacing of the rear section of the locking groove 601, and then the installation bracket 404 is pushed into the cabinet 1, and at the same time, the sliding support rod 401 drives the limit block 604 to slide to the rear end of the locking groove 601 through the ring 12 to move it to In the initial position, the mounting frame 404 moves the interior of the cabinet 1. When the cabinet 1 is placed in a relatively humid environment, the dehumidification fan 1602 is started, and the dehumidification wind will be blown to the bottom of the cabinet 1 through the moisture-proof rod 18 to prevent moisture accumulation at the bottom of the cabinet 1 and accelerate the drying of the internal space of the cabinet 1. At the same time, the heat of the dehumidification fan 1602 is dissipated from the heat dissipation vent 15. When the environment is relatively dry, the dehumidification fan 1602 is not started, and the moisture-proof rod 18 absorbs moisture at the bottom of the cabinet 1 to keep it dry. When the moisture-proof rod 18 needs to be replaced, the inspection door 14 is opened and pushed out from the inside of the extension cabinet 2 through the sliding guide rail, and then the extension cabinet 1604 is opened outward to replace the moisture-proof rod 18.

[0046] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high and low voltage switch cabinet, comprising a cabinet body (1), characterized in that: The front end of the cabinet (1) is movably connected to a cabinet door (5), and the bottom end of the cabinet (1) is fixedly connected to an extension cabinet (2). A group of left-right symmetrical slide rails (3) are fixedly connected to both upper and lower ends of the cabinet (1). The front ends of the slide rails (3) on the side close to the cabinet door (5) are all closed, and the front ends of the slide rails (3) on the other side are all open. A movable device mounting mechanism (4) is arranged inside the cabinet (1). An automatic locking mechanism (6) is fixedly connected to the side of the cabinet (1) close to the cabinet door (5). A distribution box is fixedly connected to the rear side of the cabinet (1), and an electric folding and retracting opening (7) is movably connected to the side of the cabinet (1) away from the cabinet door (5).

2. A high and low voltage switch cabinet according to claim 1, characterized in that: The movable mounting device mechanism (4) comprises a sliding support rod (401), a driving block (402), a rotating rod (403) and a mounting frame (404); the driving block (402) is provided with two and is symmetrically fixedly connected to the outer side of the sliding support rod (401); the two ends of the rotating rod (403) are respectively movably connected to the opposite side of the end of the driving block (402) away from the sliding support rod (401) through bearings; the mounting frame (404) is fixedly connected to the outer side of the rotating rod (403); the side of the mounting frame (404) away from the driving rod is fixedly connected to two front-to-back symmetrical sliders (8), and the sliders (8) match the slide rail (3); the upper and lower ends of the sliding support rod (401) are movably connected to pulleys, and the pulleys are slidably connected to the inside of the slide rail (3) near the cabinet door (5).

3. A high and low voltage switch cabinet according to claim 1, characterized in that: The movable mounting device mechanism (4) further comprises an electric telescopic rod (405), an extension frame (406) and a universal wheel (407); the electric telescopic rod (405) is provided with two and the output ends thereof are respectively fixedly connected to the two sides of the bottom end of the extension frame (406); the universal wheel (407) is provided with two and is respectively fixedly connected to the two sides of the bottom end of the extension frame (406).

4. A high and low voltage switch cabinet according to claim 2, characterized in that: The bottom front side of the mounting frame (404) is provided with a connection hole (9); a side of the mounting frame (404) close to the cabinet door (5) is provided with a connection groove (10), and the connection groove (10) is communicated with the connection hole (9); the interior of the mounting frame (404) is fixedly connected with a high- and low-voltage device (11); the top end of the electric telescopic rod (405) is fixedly connected to the interior of the connection hole (9); the top end of the extension frame (406) is located inside the connection hole (9), and the mounting frame (404) opposite to the connection hole (9) is provided with an opening.

5. The high and low voltage switch cabinet according to claim 1, characterized in that: The automatic locking mechanism (6) comprises a locking groove (601), a pull rope (602), a squeeze spring (603), a limit block (604), a magnet (605) and a fixing strip (606); the limit blocks (604) are respectively fixedly connected to the two ends of the squeeze spring (603); the magnets (605) are respectively fixedly connected to the connection between the limit blocks (604) and the squeeze spring (603), and the magnetic poles of the magnets (605) are opposite to each other; one end of the pull rope (602) is divided into two and respectively fixedly connected to the opposite sides of the magnet (605); and the other end of the pull rope (602) is hung and connected with the fixing strip (606).

6. A high and low voltage switch cabinet according to claim 5, characterized in that: The locking groove (601) is T-shaped in both appearance and cross-section. The locking groove (601) is fixedly connected to a side of the cabinet body (1) close to the cabinet door (5). The limit block (604), the spring and the magnet are all located inside the locking groove (601). The end of the pull rope (602) away from the spring passes through the locking groove (601). When the limit blocks (604) are close to each other, they are adapted to the rear end of the locking groove (601).

7. A high and low voltage switch cabinet according to claim 5, characterized in that: One end of the limit block (604) extends to the outside of the locking groove (601) and is fixedly connected to a ring (12), and the ring (12) is sleeved on the outside of the sliding support rod (401). The mounting frame (404) is fixedly connected to two upper and lower symmetrical guide wheels (13) on the side close to the cabinet door (5). One end of the pull rope (602) away from the extrusion spring (603) passes through the hub of the guide wheel (13). One end of the fixed block passes through the connecting groove (10) and is fixedly connected to the output end of the electric telescopic rod (405).

8. A moisture-proof structure at the bottom of a high and low voltage switch cabinet, using a high and low voltage switch cabinet as claimed in any one of claims 1 to 7, characterized in that: An inspection door (14) is provided on one side of the extension cabinet (2), and a heat dissipation vent (15) is fixedly connected to one end of the extension cabinet (2) away from the inspection door (14), and a heat dissipation and moisture-proof mechanism (16) is movably connected inside the extension cabinet (2) via a slide-out guide rail.

9. A high and low voltage switch cabinet according to claim 8, characterized in that: The heat dissipation and moisture-proof mechanism (16) comprises a base (1601), a dehumidification fan (1602), a return spring (1603) and an extension cabinet (1604); a mounting hole (17) is provided at the top of the base (1601), and the dehumidification fan (1602) is fixedly connected to the inside of the mounting hole (17); the return spring (1603) is symmetrically arranged on the left and right; one end of the return spring (1603) is respectively fixedly connected to both sides of an end of the base (1601) away from the extension cabinet (1604), and the other end of the return spring (1603) is respectively fixedly connected to both sides of an end of the extension cabinet (1604) close to the base (1601).

10. A high and low voltage switch cabinet according to claim 9, characterized in that: The base (1601) and the extension cabinet (1604) have the same volume and are movably connected to each other at the top of one side close to each other through a hinge, and the base (1601) and the extension cabinet (1604) are adapted to the interior of the extension cabinet (2) when folded and stacked, and a plurality of moisture-proof rods (18) are fixedly installed in the internal array of the extension cabinet (1604), and a dehumidifier is placed inside the moisture-proof rods (18).

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