CN112202059B - A waterproof AC low-voltage switch cabinet - Google Patents

Abstract

The invention discloses a waterproof alternating-current low-voltage switch cabinet, which comprises a cabinet body frame, wherein a rear cover is arranged on one side of the cabinet body frame through screw threads, a damp-proof piece is fixedly arranged at the bottom end of the cabinet body frame, a plurality of groups of sealing cover pieces are arranged on one side of the cabinet body frame, which is far away from the rear cover, connecting seats are fixedly connected at four corners of the top end of the cabinet body frame, and waterproof top frames are fixed at the top ends of the four groups of connecting seats; through set up sealed frame, sealed frame and sealed offset plate between back lid and cabinet body frame, realized the two-way seal between back lid and the cabinet body frame, effectively strengthened the waterproof nature of lid department behind the cubical switchboard, and then improved the inside security of cubical switchboard.

Description

A waterproof AC low-voltage switch cabinet

technical field

The invention relates to the technical field of power equipment, in particular to a waterproof AC low-voltage switch cabinet.

Background technique

AC low-voltage switchgear is a kind of electrical equipment. The outside line of the switchgear first enters the main control switch in the cabinet, and then enters the sub-control switch, and each sub-circuit is set according to its needs. Switchgear is widely used in instrumentation, automatic control, motor magnetic switch, various AC contactors, etc.

However, the existing AC low-voltage switchgear has poor waterproof performance, which reduces the safety inside the AC low-voltage switchgear and affects the normal use of the electrical equipment inside the switchgear. Therefore, we propose a waterproof AC low-voltage switchgear to solve the problem. above problem.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a waterproof AC low-voltage switchgear to solve the above-mentioned problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a waterproof AC low-voltage switchgear, comprising a cabinet frame, one side of the cabinet frame is mounted with a back cover through screw threads, and the bottom end of the cabinet frame is Moisture-proof parts are fixedly installed, the side of the cabinet frame away from the rear cover is provided with multiple sets of sealing cover parts, the top four corners of the cabinet frame are fixedly connected with connecting seats, and the tops of the four groups of the connecting seats are fixed Has a waterproof top frame.

Preferably, a sealing frame is installed on the inner wall of one side of the cabinet frame close to the rear cover through screws and threads, a sealing frame is fixedly installed on the side of the rear cover close to the cabinet frame, and the sealing frame is close to a side of the rear cover. The side opening is provided with a sealing groove that cooperates with the sealing frame, and the sealing frame is movably clamped in the sealing groove. The outer side of one end of the cabinet frame close to the rear cover is fixedly connected with a sealing sheet. The sealing sheet The side away from the cabinet frame is in contact with the outer wall of the side of the rear cover.

Preferably, the moisture-proof member includes a moisture-proof bottom frame and a moisture-proof board, an outer wall of one side of the moisture-proof bottom frame is provided with a moisture-proof groove for use with the moisture-proof board, and a plurality of groups of through holes are formed on the lower surface of the inner wall of the moisture-proof groove, and The bottoms of the multiple groups of through holes extend out of the bottom end of the moisture-proof bottom frame, the moisture-proof bottom frame on one side of the moisture-proof groove is provided with a sliding cavity and a rotating cavity, the rotating cavity is located above the sliding cavity, and one side of the rotating cavity is provided with a sliding cavity and a rotating cavity. Extending out of one side outer wall of the moisture-proof bottom frame, the sliding cavity is communicated with the moisture-proof groove, the sliding cavity is provided with a driving rack, and the side of the driving rack away from the moisture-proof groove is meshed and connected with a driving gear, so The middle part of the drive gear is vertically connected with a drive shaft, and the upper part of the drive shaft rotates and extends into the rotating cavity and is fixedly installed with a button plate. The board is movably snapped into the moisture-proof groove and is in contact with one side of the drive board.

Preferably, the moisture-proof member is fixedly installed through the top end of the moisture-proof bottom frame and the bottom end of the cabinet frame, and a support base is fixedly installed at four corners of the bottom end of the moisture-proof bottom frame.

Preferably, the sealing cover includes a cover frame, a drive cavity is opened in the cover frame, a rotating shaft is rotatably installed in the middle part of an inner wall of one side of the drive cavity through a damping bearing, and a middle part of the outer surface of the rotating shaft is installed. The fixed sleeve is provided with a two-way cam, and the drive cavities on both sides of the two-way cam are slidingly clamped with symmetrically distributed drive blocks. A spring is fixedly connected between the outer wall of the driving block on the side and the inner wall of the driving cavity. The side of the driving rod away from the driving block extends out of the outer wall of the cover frame through the driving cavity and is fixedly connected with a sealing plate. The outer wall of one side close to the sealing plate is provided with a receiving groove which is used in cooperation with the sealing plate.

Preferably, a side of the drive block close to the bidirectional cam is provided with an inner chute used in cooperation with the bidirectional cam, and both ends of the bidirectional cam are movably clamped in the corresponding inner chute.

Preferably, a side of the cabinet frame away from the rear cover is provided with a front slot for use with the cover frame, and the cover frame is movably snapped into the corresponding front slot, and the inner walls of both sides of the front slot are provided with and sealed The sealing plate is matched with the sealing and fixing groove, and the sealing plate can be movably clamped in the corresponding sealing and fixing groove.

Preferably, sealing limit plates are fixedly installed on the upper and lower surfaces of the inner wall of the front groove, and limit grooves are provided on the upper and lower ends of one side of the cover frame to cooperate with the sealing limit plates, and the sealing limit plates are movably clamped. in the corresponding limit slot.

Preferably, the length of the sealing limiting plate is the same as the length of the cover frame, and the width of the sealing plate is the same as the width of the cover frame.

Preferably, the inner wall of the cabinet frame is slidably provided with a mounting frame corresponding to the cover frame, and one side of the mounting frame is fixedly mounted on the outer wall of the cover frame.

Preferably, one side of the rotating shaft extends out of the outer wall of the cover frame through the driving cavity and is fixedly connected with a turning handle.

Preferably, the size of the bottom end of the waterproof top frame is larger than the size of the top end of the cabinet frame.

Compared with the prior art, the beneficial effects of the present invention are:

1. In the present invention, by setting the sealing cover, the front groove on one side of the cabinet frame can be closed, and the sealing between the sealing cover and the two sides of the front groove and between the upper and lower sides can be achieved, which effectively enhances the The water resistance at the front groove on one side of the cabinet frame improves the safety inside the switch cabinet.

2. By setting the sealant frame, the seal frame and the sealant plate between the back cover and the cabinet frame, the two-way sealing between the back cover and the cabinet frame is realized, and the waterproofness of the back cover of the switch cabinet is effectively enhanced. Thereby, the safety inside the switch cabinet is improved.

3. By arranging moisture-proof parts at the bottom of the cabinet frame, the damp air can be effectively prevented from entering the switch cabinet from the bottom of the switch cabinet, thereby enhancing the waterproofness of the bottom of the switch cabinet, thereby further improving the safety inside the switch cabinet, and it is convenient for The moisture-proof board is replaced, which improves the use effect of the entire moisture-proof part.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural connection schematic diagram of the cabinet frame and the rear cover in the present invention;

3 is a schematic diagram of the structural connection of the rear cover in the present invention;

4 is a schematic diagram of the structural connection of the sealing cover in the present invention;

5 is a schematic diagram of the structural connection of the cabinet frame, the sealing cover and the mounting frame in the present invention;

FIG. 6 is a schematic diagram of the structural connection of the cabinet frame, the sealing cover and the mounting frame in the present invention.

In the figure: 1. Cabinet frame; 2. Back cover; 3. Moisture-proof part; 4. Sealing cover; 5. Support base; 6. Connecting seat; 7. Waterproof top frame; 8. Turning handle; 9. Mounting frame ;

11. Sealing frame; 12. Sealing plate; 13. Sealing limit plate; 21. Sealing frame; 101. Sealing groove; 102. Front groove; 103. Sealing fixing groove;

31, moisture-proof bottom frame; 32, moisture-proof plate; 33, drive rack; 34, drive gear; 35, drive shaft; 36, button plate; 37, drive plate; 301, moisture-proof groove; 302, through hole; 303, slide cavity; 304, rotating cavity;

41, cover frame; 42, rotating shaft; 43, two-way cam; 44, driving block; 441, inner chute; 45, driving rod; 46, sealing plate; 47, spring; 401, driving cavity; 402, receiving groove ; 403. Limit slot.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-6, the present invention provides a technical solution: a waterproof AC low-voltage switchgear, including a cabinet frame 1, wherein the cabinet frame 1 is a hollow structure, and one side is an open structure, and the cabinet frame The back cover 2 is installed on one side of 1 through screw threads, the bottom end of the cabinet frame 1 is fixedly installed with a moisture-proof part 3, and the side of the cabinet frame 1 away from the rear cover 2 is provided with multiple sets of sealing cover parts 4. The cabinet frame The top four corners of 1 are fixedly connected with a connecting seat 6, and the top of the four groups of connecting seats 6 is fixed with a waterproof top frame 7; by setting the waterproof top frame 7, and the size of the bottom end of the waterproof top frame 7 is larger than that of the top of the cabinet frame 1 The top of the cabinet frame 1 is shielded and protected by a large area.

A sealing frame 11 is installed on the inner wall of the cabinet frame 1 close to the rear cover 2 through screws and threads. The sealing frame 21 is fixedly installed on the side of the rear cover 2 close to the cabinet frame 1, and the sealing frame 11 is close to the back cover 2 side. There is a sealing groove 101 which is used in conjunction with the sealing glue frame 21, and the sealing glue frame 21 is movably clamped in the sealing groove 101, so as to realize the clamping and sealing between the back cover 2 and the cabinet frame 1, and it is convenient to carry out the rear The disassembly between the cover 2 and the cabinet frame 1 facilitates the maintenance of the equipment inside the cabinet frame 1. The outer side of one end of the cabinet frame 1 close to the rear cover 2 is fixedly connected with a sealant plate 12, and the sealant plate 12 is far away from the cabinet. One side of the body frame 1 is in contact with the outer wall of one side of the back cover 2, which further realizes the sealing between the back cover 2 and the cabinet frame 1. Through the bidirectional sealing between the back cover 2 and the cabinet frame 1, the switch is effectively enhanced. The waterproofness of the back cover 2 of the cabinet further improves the safety inside the switch cabinet.

The moisture-proof member 3 includes a moisture-proof bottom frame 31 and a moisture-proof plate 32. An outer wall of one side of the moisture-proof bottom frame 31 is provided with a moisture-proof groove 301 used in conjunction with the moisture-proof plate 32. The inner wall of the moisture-proof groove 301 is provided with a plurality of groups of through holes 302 on the lower surface. The bottom of the through-holes 302 extends out of the bottom end of the moisture-proof bottom frame 31. The moisture-proof bottom frame 31 on one side of the moisture-proof groove 301 is provided with a sliding cavity 303 and a rotating cavity 304. The rotating cavity 304 is located above the sliding cavity 303, and the rotating cavity One side of 304 extends out of the outer wall of one side of the moisture-proof bottom frame 31, the sliding cavity 303 is communicated with the moisture-proof groove 301, the sliding cavity 303 is slidably clamped with a driving rack 33, and the side of the driving rack 33 away from the moisture-proof groove 301 is meshed and connected There is a driving gear 34, the middle of the driving gear 34 is vertically connected with a driving shaft 35, the upper part of the driving shaft 35 rotates and extends into the rotating cavity 304 and is fixedly installed with a button plate 36, and the end of the side of the driving rack 33 away from the driving gear 34 is connected vertically. There is a drive plate 37, the moisture-proof plate 32 is movably clamped in the moisture-proof groove 301 and is in contact with one side of the drive plate 37. By setting the moisture-proof plate 32 to be clamped in the moisture-proof bottom frame 31, the damp air at the bottom of the switch cabinet can be effectively passed through. The through hole 302 is sucked into the moisture-proof plate 32, thereby effectively preventing the humid air from entering the switch cabinet from the bottom of the switch cabinet, thereby enhancing the waterproofness of the bottom of the switch cabinet, thereby further improving the safety inside the switch cabinet, and by manually turning the button plate 36. Drive the drive gear 34 connected to the drive shaft 35 to rotate, thereby driving the drive rack 33 to slide in the sliding cavity 303, and then drive the drive plate 37 to move to one side of the moisture-proof plate 32, pushing the moisture-proof plate 32 out of the moisture-proof groove 301, it is convenient to replace the moisture-proof plate 32, which improves the use effect of the entire moisture-proof part 3; A support base 5 is fixedly installed at the four corners, which supports the entire switch cabinet at the bottom and prevents the bottom of the switch cabinet from contacting the ground.

The sealing cover 4 includes a cover frame 41, a driving cavity 401 is opened in the cover frame 41, a rotating shaft 42 is rotatably installed on one side of the inner wall of the driving cavity 401 through a damping bearing, and the middle part of the outer surface of the rotating shaft 42 is fixedly sleeved with Two-way cam 43, the drive cavity 401 on both sides of the two-way cam 43 is slidably clamped with symmetrically distributed drive blocks 44, and a drive rod 45 is fixedly installed on the side of the drive block 44 away from the two-way cam 43. A spring 47 is fixedly connected between the outer wall of the driving block 44 and the inner wall of the driving cavity 401 , the side of the driving rod 45 away from the driving block 44 extends out of the outer wall of the cover frame 41 through the driving cavity 401 and is fixedly connected with a sealing plate 46 , The outer wall of the cover frame 41 close to the sealing plate 46 is provided with a receiving groove 402 which is used in conjunction with the sealing plate 46 to facilitate the storage of the sealing plate 46; The inner chute 441, and the two ends of the bidirectional cam 43 are movably clamped in the corresponding inner chute 441 to limit the two ends of the bidirectional cam 43, thereby improving the distance between the bidirectional cam 43 and the drive blocks 44 on both sides. stability.

The side of the cabinet frame 1 away from the rear cover 2 is provided with a front slot 102 that cooperates with the cover frame 41 , and the cover frame 41 is movably snapped into the corresponding front slot 102 , so that the front slot on the side of the cabinet frame 1 is connected to the front slot 102 . 102 is closed, the inner walls on both sides of the front groove 102 are provided with sealing fixing grooves 103 for use with the sealing plate 46, and the sealing plate 46 can be movably clamped in the corresponding sealing fixing groove 103, wherein the length of the sealing limit plate 13 The size is the same as the length of the cover frame 41 . When the sealing plate 46 is snapped into the corresponding sealing fixing groove 103 , the sealing between the sealing cover 4 and the two sides of the front groove 102 is achieved.

The upper and lower surfaces of the inner wall of the front groove 102 are fixedly installed with the sealing limit plate 13, and the upper and lower ends of one side of the cover frame 41 are provided with a limit groove 403 which is used in conjunction with the sealing limit plate 13, and the sealing limit plate 13 is movably clamped to the upper and lower ends. In the corresponding limit groove 403; the width of the sealing plate 46 is the same as the width of the cover frame 41. When the sealing limit plate 13 is snapped into the corresponding limit groove 403, the sealing cover 4 and the front groove are realized. 102 Seal between upper and lower sides.

The inner wall of the cabinet frame 1 is slidably provided with a mounting frame 9 corresponding to the cover frame 41 , which is convenient to use the mounting frame 9 to install electrical equipment, and one side of the mounting frame 9 and the outer wall of the cover frame 41 are fixedly installed. Drive the mounting frame 9 to be pulled out from the front slot 102, thereby facilitating the inspection of the electrical equipment; one side of the rotating shaft 42 extends through the drive cavity 401 and extends out of the outer wall of the cover frame 41 and is fixedly connected with the turning handle 8, which is convenient to use The rotation of the rotation shaft 42 is performed manually.

Working principle: The present invention is a waterproof AC low-voltage switch cabinet. When the rear cover 2 and the cabinet frame 1 are installed by screws and threads, the sealant frame 21 is movably clamped in the sealing groove 101, so that the The snap connection between the cover 2 and the cabinet frame 1 is sealed, and the disassembly between the rear cover 2 and the cabinet frame 1 is convenient, so as to facilitate the maintenance of the equipment inside the cabinet frame 1, and by setting the sealing glue plate 12 , so that the side of the sealant plate 12 away from the cabinet frame 1 is in contact with the outer wall of one side of the rear cover 2, and the sealing between the rear cover 2 and the cabinet frame 1 is further realized. The two-way sealing of the switch cabinet effectively enhances the waterproofness of the back cover 2 of the switch cabinet, thereby improving the safety inside the switch cabinet. By setting the moisture-proof part 3 at the bottom of the cabinet frame 1, the moisture-proof plate 32 is clamped to the moisture-proof bottom. In the frame 31, the moist air at the bottom of the switch cabinet can be effectively sucked into the moisture-proof plate 32 through the through hole 302, thereby effectively preventing the moist air from entering the switch cabinet from the bottom of the switch cabinet, thereby enhancing the waterproofness of the bottom of the switch cabinet, thereby further improving the water resistance of the switch cabinet. The safety inside the switch cabinet is improved, and by manually turning the knob 36, the drive gear 34 connected to the drive shaft 35 is driven to rotate, thereby driving the drive rack 33 to slide in the sliding cavity 303, thereby driving the drive plate 37 to the moisture-proof One side of the plate 32 is moved, and the moisture-proof plate 32 is pushed out of the moisture-proof groove 301, thereby facilitating the replacement of the moisture-proof plate 32 and improving the use effect of the entire moisture-proof part 3; the moisture-proof part 3 passes through the top of the moisture-proof bottom frame 31 and the cabinet frame. The bottom end of 1 is fixedly installed, and the four corners of the bottom end of the moisture-proof bottom frame 31 are fixedly installed with support bases 5, which support the entire switchgear at the bottom and prevent the bottom of the switchgear from contacting the ground. The front groove 102 is sealed, wherein the mounting frame 9 is pulled out from the front groove 102 by pulling the cover frame 41, thereby facilitating the inspection of the electrical equipment. When the front groove 102 needs to be sealed, the bidirectional cam 43 is in the vertical position. In the straight state, and the sealing plate 46 is stored in the receiving groove 402, it is only necessary to push the cover frame 41 until the corresponding sealing limiting plate 13 is snapped into the limiting groove 403. At this time, the sealing plates 46 on both sides are sealed and fixed. The groove 103 corresponds to the groove 103. Then, the turning handle 8 is rotated to drive the two-way cam 43 connected with the rotating shaft 42 to perform damping rotation. , drive the two-way cam 43 to push the driving blocks 44 on both sides away from each other, and then push the sealing plates 46 connected to the driving rod 45 on both sides away from each other, and then drive the sealing plates 46 on both sides to be clamped in the corresponding sealing fixing grooves In 103, the connection and fixation between the sealing cover 4 and the cabinet frame 1 and the sealing at the front groove 102 are realized. At this time, the spring 47 is in a compressed state. When the sealing cover 4 and the cabinet frame 1 need to be separated, Rotate the handle 8 in the opposite direction. At this time, the pressure of the two-way cam 43 on the driving block 44 disappears. Under the action of the spring 47, the driving blocks 44 on both sides are pushed to move toward each other, and then the sealing plate 46 is driven away from the corresponding sealing plate. The sealing and fixing grooves 103 enter into the corresponding receiving grooves 402 , thereby facilitating the separation between the sealing cover 4 and the cabinet frame 1 .

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A waterproof AC low-voltage switchgear, comprising a cabinet frame (1), characterized in that: a back cover (2) is installed on one side of the cabinet frame (1) through screw threads, and the cabinet frame The bottom end of (1) is fixedly installed with a moisture-proof member (3), the side of the cabinet frame (1) away from the rear cover (2) is provided with a plurality of sets of sealing cover members (4), the cabinet frame (1) The top four corners of the ) are fixedly connected with connecting seats (6), and the tops of the four groups of the connecting seats (6) are fixed with a waterproof top frame (7); A sealing frame (11) is installed on the inner wall of one side of the cabinet frame (1) close to the rear cover (2) through screw threads, and a sealing frame (11) is fixedly installed on the side of the rear cover (2) close to the cabinet frame (1). A plastic frame (21), a sealing groove (101) cooperating with the sealing rubber frame (21) is opened on the side of the sealing frame (11) close to the rear cover (2), and the sealing rubber frame (21) is movable Connected to the sealing groove (101), a sealant plate (12) is fixedly connected to the outer side of one end of the cabinet frame (1) close to the rear cover (2), and the sealant plate (12) is far away from the cabinet frame ( One side of 1) is in contact with one side of the outer wall of the back cover (2); The moisture-proof member (3) includes a moisture-proof bottom frame (31) and a moisture-proof board (32), and one side outer wall of the moisture-proof bottom frame (31) is provided with a moisture-proof groove (301) used in conjunction with the moisture-proof board (32), so The lower surface of the inner wall of the moisture-proof groove (301) is provided with multiple groups of through holes (302), and the bottom of the multiple groups of through holes (302) extends out of the bottom end of the moisture-proof bottom frame (31). A sliding cavity (303) and a rotating cavity (304) are opened in the moisture-proof bottom frame (31) on the side, the rotating cavity (304) is located above the sliding cavity (303), and one side of the rotating cavity (304) extends out One side outer wall of the moisture-proof bottom frame (31), the sliding cavity (303) is communicated with the moisture-proof groove (301), and a driving rack (33) is slidably clamped in the sliding cavity (303), and the driving rack (33) A drive gear (34) is meshed and connected to the side away from the moisture-proof groove (301), a drive shaft (35) is vertically connected to the middle of the drive gear (34), and the upper part of the drive shaft (35) rotates and extends into the A button disc (36) is fixedly installed in the rotating cavity (304), and a drive plate (37) is vertically connected to the end of one side of the drive rack (33) away from the drive gear (34), and the moisture-proof plate (32) The movable clip is connected in the moisture-proof groove (301) and is in contact with one side of the driving board (37); The moisture-proof member (3) is fixedly installed through the top end of the moisture-proof bottom frame (31) and the bottom end of the cabinet frame (1), and a support base (5) is fixedly installed at the four corners of the bottom end of the moisture-proof bottom frame (31). ; The size of the bottom end of the waterproof top frame (7) is larger than the size of the top end of the cabinet frame (1). 2 . The waterproof AC low-voltage switchgear according to claim 1 , wherein the sealing cover ( 4 ) comprises a cover frame ( 41 ), and a drive cavity is opened in the cover frame ( 41 ). 3 . (401), a rotating shaft (42) is rotatably installed in the middle part of one inner wall of the driving cavity (401) through a damping bearing, and a bidirectional cam (43) is fixedly sleeved in the middle part of the outer surface of the rotating shaft (42), The drive cavities (401) on both sides of the two-way cam (43) are slidably clamped with symmetrically distributed drive blocks (44), and a side of the drive block (44) away from the two-way cam (43) is fixedly installed with A driving rod (45), a spring (47) is fixedly connected between the outer wall of the driving block (44) on the upper and lower sides of the driving rod (45) and the inner wall of the driving cavity (401), and the driving rod (45) is away from the driving One side of the block (44) extends out of the outer wall of the cover frame (41) through the drive cavity (401) and is fixedly connected with a sealing plate (46), the cover frame (41) is close to the side of the sealing plate (46) The outer wall is provided with a receiving groove (402) for use with the sealing plate (46). 3. A waterproof AC low-voltage switchgear according to claim 2, characterized in that: a side of the driving block (44) close to the two-way cam (43) is provided with an inner part used in cooperation with the two-way cam (43). A chute (441) is provided, and both ends of the bidirectional cam (43) are movably clamped in the corresponding inner chute (441). 4. A waterproof AC low-voltage switchgear according to claim 2, characterized in that: a side of the cabinet frame (1) away from the rear cover (2) is provided with a A front groove (102), and the cover frame (41) is movably snapped into the corresponding front groove (102), and the inner walls on both sides of the front groove (102) are provided with sealing and fixing grooves that cooperate with the sealing plate (46). (103), and the sealing plate (46) can be movably snapped into the corresponding sealing fixing groove (103). 5. A waterproof AC low-voltage switchgear according to claim 4, characterized in that: sealing limit plates (13) are fixedly installed on the upper and lower surfaces of the inner wall of the front groove (102), and the cover frame (41) The upper and lower ends of one side of the ) are provided with limit grooves (403) used in cooperation with the seal limit plate (13), and the seal limit plate (13) is movably snapped into the corresponding limit groove (403). 6 . The waterproof AC low-voltage switchgear according to claim 5 , wherein the length of the sealing limit plate ( 13 ) is the same as that of the cover frame ( 41 ), and the sealing plate ( 46) is the same width as the cover frame (41). 7 . The waterproof AC low-voltage switchgear according to claim 2 , wherein the inner wall of the cabinet frame ( 1 ) is slidably clamped with a mounting frame ( 9 ) corresponding to the cover frame ( 41 ). 8 . And one side of the mounting frame (9) and the outer wall of the cover frame (41) are fixedly mounted. 8 . The waterproof AC low-voltage switchgear according to claim 2 , wherein one side of the rotating shaft ( 42 ) extends out of the outer wall of the cover frame ( 41 ) through the driving cavity ( 401 ) and passes through the drive cavity ( 401 ). The fixed connection has a turning handle (8).

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