CN218633718U

CN218633718U - Explosion-proof safety casing for AC frequency converter

Info

Publication number: CN218633718U
Application number: CN202222884244.3U
Authority: CN
Inventors: 王丽明; 琚海涛; 窦露露
Original assignee: Hebi City Jin Feilong Electronic Technology Co ltd
Current assignee: Hebi City Jin Feilong Electronic Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-14
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to a converter equipment technical field especially relates to an explosion-proof safety type shell for AC converter, including the converter body, be provided with the casing outside the converter body, the casing includes backplate, panel and both sides board, two be provided with the stiffening rib on the curb plate, the stiffening rib has a plurality ofly and the interval evenly sets up, be provided with the draw-in groove that is used for fixed stiffening rib on the curb plate, set up the expending rod in the draw-in groove, the stiffening rib is portable, be provided with the sand grip on the curb plate, be provided with the arc wall on the sand grip, be provided with the elastic bulge who uses with the arc wall cooperation on the stiffening rib, be provided with swing mechanism on backplate and the panel, swing mechanism is including the cardboard that is used for the joint stiffening rib, and the air current that single heat dissipation fan produced in solving prior art converter shell can not cover completely, causes the heat to pile up the problem of increase explosion risk, the utility model discloses there is good usage at converter manufacture factory.

Description

Explosion-proof safety casing for AC frequency converter

Technical Field

The utility model belongs to the technical field of converter equipment, especially, relate to an explosion-proof safety type shell for AC frequency converter.

Background

The frequency converter is a power control device for controlling an alternating current motor by changing the frequency of a working power supply of the motor, and has a remarkable energy-saving effect and wide application in various industries. However, as the working load of the frequency converter increases, a large amount of heat is generated, once the heat is too much, hidden explosion hidden dangers are increased, and the heat inside the existing equipment is discharged through the heat dissipation fan. However, because the frequency converter is of a quadrangular prism structure, the four corners of the shell cannot be well covered by airflow generated by one heat dissipation fan, and the heat accumulation not only affects the heat dissipation efficiency but also increases the risk of explosion.

Disclosure of Invention

To the above-mentioned condition, for overcoming prior art's defect, the utility model provides an exchange flame proof safety type shell for converter solves in the prior art converter shell single heat dissipation fan produced air current and can not cover completely, causes the heat to pile up the problem of increase explosion risk.

The technical scheme includes that the explosion-proof safety shell for the alternating-current frequency converter comprises a frequency converter body, a shell is arranged outside the frequency converter body and comprises a back plate, a panel and two side plates, reinforcing ribs are arranged on the two side plates, a plurality of reinforcing ribs are uniformly arranged at intervals, clamping grooves used for fixing the reinforcing ribs are formed in the side plates, heat expansion extension rods are arranged in the clamping grooves and are movable, raised lines used for limiting the moving direction of the reinforcing ribs are arranged on the side plates and are arranged corresponding to the reinforcing ribs one by one, gaps used for moving the reinforcing ribs are formed in the raised lines, arc grooves are formed in the raised lines, elastic protrusions used with the arc grooves are arranged on the reinforcing ribs, swing mechanisms are arranged on the back plate and the panel and comprise clamping plates used for clamping the reinforcing ribs, the elastic protrusions enter the arc grooves after moving along with the reinforcing ribs, and the reinforcing ribs swing under the driving of the clamping plates on the swing mechanisms and assist in heat circulation.

Preferably, the sand grip includes the riser that two structures are the same, the riser cross section is "L" column structure, the arc wall is located the riser and keeps away from one end of curb plate.

Preferably, the glue joint has the arc piece that is used for fixed stiffening rib in the draw-in groove, be provided with a plurality of round holes that use with the cooperation of thermal expansion extension rod on the arc piece, the stiffening rib includes the montant that uses with the arc piece cooperation, be connected with the montant through the spring on the curb plate, the one end that the draw-in groove was kept away from to the montant is provided with the floor with the integrative structure of montant, the floor is rectangle platelike structure, and elastic bulge is located the floor.

Preferably, swing mechanism is including fixing the horizontal pole on panel and backplate, sliding connection has the rack on the horizontal pole, be provided with the connecting plate on the horizontal pole, it is connected with the cardboard to rotate on the connecting plate, the cardboard is circular structure, be provided with the tooth with rack toothing on the cardboard, be provided with the joint groove that is used for the joint montant on the cardboard, be provided with the fixed block that uses with the cooperation of joint groove on the montant, form the floor and promote the montant to the joint groove under the promotion of thermal expansion extension rod, and rotate under the cooperation of rack and cardboard and lead heat exhaust structure.

Preferably, a push rod motor is fixed at one end of the cross rod, an output shaft of the push rod motor is connected with one end of the rack, a connecting strip which is integrated with the rack is arranged on one side of the rack along the length direction of the rack, and a sliding groove which is matched with the connecting strip for use is arranged on the cross rod.

The utility model has the advantages that the two side plates of the shell of the frequency converter are provided with the movable reinforcing ribs which can swing, the airflow generated by the auxiliary heat dissipation fan covers all areas including the four corners of the shell, the heat in the shell is ensured to be discharged in time, and the condition that the frequency converter explodes due to heat accumulation is prevented;

the reinforcing ribs are matched with the clamping grooves, so that the strength of the side plates is increased, the moving direction of the reinforcing ribs is limited due to the arrangement of the raised lines, the vertical rods are ejected out by the heated thermal expansion extension rods, and the elastic bulges enter the arc-shaped grooves at the end parts of the vertical plates, so that the reinforcing ribs can swing to generate air flow conveniently;

the moving direction of rack has been injectd with the setting of spout to swing mechanism's horizontal pole, and the setting of push rod motor provides power for the removal of relapse of rack, and the setting of fixed block on the montant relies on draw-in groove on cardboard and the cardboard, and under the meshing of tooth and rack on the cardboard, drives the stiffening rib and swings repeatedly.

Drawings

FIG. 1 is a structural diagram of the flameproof safety housing for the AC frequency converter;

FIG. 2 is an enlarged view of the A part of the structure diagram of the explosion-proof safety type shell for the AC frequency converter;

FIG. 3 is an enlarged view of the structure of the explosion-proof safety casing B of the AC frequency converter;

FIG. 4 is a sectional view of the flameproof safety housing for the AC frequency converter of the present invention;

FIG. 5 is a structural diagram of the reinforcing rib of the explosion-proof safety type casing for the AC frequency converter in the use state.

Wherein 1 converter body, 2 casings, 3 backplate, 4 panels, 5 curb plates, 6 stiffening ribs, 7 draw-in grooves, 8 thermal expansion extension rods, 9 sand grips, 10 swing mechanism, 11 cardboard, 12 risers, 13 arc pieces, 14 round holes, 15 montants, 16 springs, 17 floor, 18 horizontal pole, 19 racks, 20 connecting plates, 21 teeth, 22 joint groove, 23 push rod motor, 24 connecting strips, 25 spout, 26 arc groove, 27 elastic bulge, 28 fixed block.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention, and in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and only for convenience of description of the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance throughout the present disclosure, it being understood that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings.

The first embodiment is as follows: according to the attached drawings of the specification, the explosion-proof safe shell for the alternating current frequency converter comprises a frequency converter body 1, a shell 2 is arranged outside the frequency converter body 1, the shell 2 comprises a back plate 3, a panel 4 and two side plates 5 which are fixed through screws, reinforcing ribs 6 are arranged on the two side plates 5, the reinforcing ribs 6 are of rectangular plate-shaped structures, and the reinforcing ribs 6 are arranged uniformly at intervals. Be provided with the bar shaped plate rather than a body structure on curb plate 5, the bar shaped plate has a plurality ofly and the interval evenly sets up, the one side that curb plate 5 was kept away from in the bar groove is provided with its inside draw-in groove 7 that just is used for fixed stiffening rib 6 that caves in, arc structure on the draw-in groove 7, the bar inslot is provided with the short slot, the short slot has a plurality ofly and evenly sets up along bar shaped plate length direction interval, the rubber joint has the expend in heat extension rod 8 in the short slot, expend in heat extension rod 8 belongs to prior art, expend in heat extension rod 8 has a plurality ofly. The reinforcing ribs 6 are movable, protruding strips 9 used for limiting the moving direction of the reinforcing ribs 6 are arranged on the side plates 5, the protruding strips 9 are multiple and are arranged in one-to-one correspondence with the reinforcing ribs 6, and gaps used for moving the reinforcing ribs 6 are formed in the protruding strips 9. The raised lines 9 comprise two vertical plates 12 which have the same structure and are positioned on two side edges of the reinforcing rib 6, the cross sections of the vertical plates 12 are in an L-shaped structure, and one end parts of the vertical plates 12 far away from the side plates 5 are provided with arc-shaped grooves 26. Be provided with the elastic bulge 27 with the cooperation of arc wall 26 use on the stiffening rib 6, elastic bulge 27 is including sunken to the inside cylinder groove of stiffening rib 6, and cylinder groove end sliding connection has protruding cap, and protruding cap is hollow hemispherical structure, and protruding cap inner wall is connected through the pressure spring with the cylinder groove bottom, and cylinder inslot wall is provided with the rectangular channel, and protruding cap border is provided with uses and the bump as an organic whole structure with the rectangular channel cooperation. The swinging mechanism 10 is fixed on the back plate 3 and the panel 4 through screws, the swinging mechanism 10 comprises a clamping plate 11 used for clamping the reinforcing rib 6, an elastic bulge 27 is formed to enter the arc-shaped groove 26 after moving along with the reinforcing rib 6, and the reinforcing rib 6 swings under the driving of the clamping plate 11 on the swinging mechanism 10 and assists the heat circulation.

In one embodiment, according to the attached drawings, an arc-shaped piece 13 for fixing the reinforcing rib 6 is glued in the clamping groove 7, a plurality of circular holes 14 matched with the thermal expansion extension rod 8 are formed in the arc-shaped piece 13, and the circular holes 14 penetrate through the thickness direction of the arc-shaped piece 13. The reinforcing rib 6 comprises a vertical rod 15 matched with the arc-shaped sheet 13, connecting blocks of an integrated structure with the vertical rod 15 are arranged at two end parts of the vertical rod 15, the connecting blocks are of rectangular block structures, and the side plates 5 are connected with the connecting blocks on the vertical rod 15 through springs 16. The end of the vertical rod 15 far away from the clamping groove 7 is provided with a ribbed plate 17 which is integrated with the vertical rod 15, the ribbed plate 17 is in a rectangular plate structure, and the elastic bulge 27 is positioned on the ribbed plate 17.

In one embodiment, according to the attached drawings, the swing mechanism 10 includes a cross bar 18 fixed on the panel 4 and the backboard 3 by screws, the cross section of the cross bar 18 is "U" shaped, a rack 19 is connected in the cross bar 18 in a sliding manner, a connecting strip 24 integrated with one side of the rack 19 along the length direction is arranged on one side of the rack 19, and a sliding slot 25 matched with the connecting strip 24 is arranged on the cross bar 18. The cross bar 18 is provided with a plurality of connecting plates 20 which are integrated with the cross bar, and the number of the connecting plates 20 is equal to that of the reinforcing ribs 6. The connecting plate 20 is rotatably connected with a clamping plate 11 through a fixed shaft, the clamping plate 11 is of a circular structure, teeth 21 meshed with the racks 19 are glued on the clamping plate 11, and the teeth 21 do not completely cover the circular side edges of the clamping plate 11. Be provided with on the cardboard 11 and run through its thickness direction and be used for the joint groove 22 of joint montant 15, be provided with on the montant 15 with the fixed block 28 that the joint groove 22 cooperation was used, fixed block 28 and montant 15 structure as an organic whole form floor 17 promotes montant 15 to joint groove 22 under the promotion of thermal expansion extension rod 8, and rotates the structure that leads heat discharge under the cooperation of rack 19 and cardboard 11. A supporting plate integrated with the cross rod 18 is fixed at one end of the cross rod, a push rod motor 23 is fixed on the push plate through a motor mounting seat screw, a power supply is further clamped on the supporting plate, the push rod motor 23 is electrically connected with the power supply through a thermal switch, when the set temperature is reached, the thermal expansion extension rod 8 extends the set distance to push the reinforcing rib 6 out of the groove, and the push rod motor 23 is electrified to work under the control of the thermal switch. An output shaft of the push rod motor 23 is fixed with a screw at one end of the rack 19.

The utility model discloses a through set up the portable stiffening rib that takes place the swing on the both sides board of converter casing, the air current that the supplementary heat dissipation fan produced covers all areas including casing four corners, guarantees the heat in the casing and discharges in time, prevents to appear because the heat piles up the condition that leads to the converter explosion; the reinforcing ribs are matched with the clamping grooves, so that the strength of the side plates is increased, the moving direction of the reinforcing ribs is limited due to the arrangement of the convex strips, the vertical rods are ejected out due to the heating of the thermal expansion extension rods, and the elastic bulges enter the arc-shaped grooves at the end parts of the vertical plates, so that the reinforcing ribs can swing to generate air flow conveniently; the moving direction of the rack is limited by the arrangement of the transverse rods and the sliding grooves of the swing mechanism, power is provided for the repeated moving of the rack due to the arrangement of the push rod motor, the arrangement of the fixing blocks on the vertical rods depends on the clamping grooves in the clamping plates and the clamping plates, and the reinforcing ribs are driven to swing repeatedly under the meshing of the teeth and the racks on the clamping plates.

The present invention has been described in detail with reference to the specific embodiments and examples, but these are not to be construed as limitations of the present invention. Numerous variations and modifications can be made by those skilled in the art without departing from the principles of the invention, which should also be considered as within the scope of the invention.

Claims

1. The flameproof safety shell for the alternating-current frequency converter comprises a frequency converter body (1) and is characterized in that a shell (2) is arranged outside the frequency converter body (1), the shell (2) comprises a back plate (3), a panel (4) and two side plates (5), reinforcing ribs (6) are arranged on the two side plates (5), the reinforcing ribs (6) are uniformly arranged at intervals, clamping grooves (7) used for fixing the reinforcing ribs (6) are formed in the side plates (5), heat expansion extension rods (8) are arranged in the clamping grooves (7), the heat expansion extension rods (8) are multiple, the reinforcing ribs (6) are movable, convex strips (9) used for limiting the moving direction of the reinforcing ribs (6) are arranged on the side plates (5), the convex strips (9) are multiple and are arranged corresponding to the reinforcing ribs (6) one by one, gaps used for moving the reinforcing ribs (6) are formed in the convex strips (9), arc-shaped grooves (26) are formed in the convex strips (6), elastic bulges (27) matched with the arc-shaped grooves (26) are arranged on the back plate (3), the reinforcing ribs (4) and swing clamping mechanisms (10) and comprise swing clamping plates (11), the elastic bulge (27) enters the arc-shaped groove (26) after moving along with the reinforcing rib (6), and the reinforcing rib (6) swings under the driving of the clamping plate (11) on the swinging mechanism (10) and assists in heat circulation.

2. The explosion-proof safety casing for the alternating-current frequency converter according to claim 1, wherein the raised strip (9) comprises two vertical plates (12) with the same structure, the cross sections of the vertical plates (12) are of an L-shaped structure, and the arc-shaped groove (26) is located at one end part, far away from the side plate (5), of the vertical plate (12).

3. The explosion-proof safety shell for the alternating-current frequency converter according to claim 1, characterized in that an arc piece (13) used for fixing a reinforcing rib (6) is connected in the clamping groove (7) in an adhesive mode, a plurality of round holes (14) matched with the thermal expansion extension rod (8) are formed in the arc piece (13), the reinforcing rib (6) comprises a vertical rod (15) matched with the arc piece (13), the side plate (5) is connected with the vertical rod (15) through a spring (16), a rib plate (17) of an integrated structure with the vertical rod (15) is arranged at one end, away from the clamping groove (7), of the vertical rod (15), the rib plate (17) is of a rectangular plate-shaped structure, and the elastic bulge (27) is located on the rib plate (17).

4. The flameproof safety type shell for the alternating current frequency converter according to claim 3, wherein the swing mechanism (10) comprises a cross rod (18) fixed on a panel (4) and a back plate (3), a rack (19) is connected to the cross rod (18) in a sliding manner, a connecting plate (20) is arranged on the cross rod (18), a clamping plate (11) is connected to the connecting plate (20) in a rotating manner, the clamping plate (11) is of a circular structure, teeth (21) meshed with the rack (19) are arranged on the clamping plate (11), a clamping groove (22) used for clamping the vertical rod (15) is arranged on the clamping plate (11), a fixing block (28) matched with the clamping groove (22) for use is arranged on the vertical rod (15), a rib plate (17) is formed to push the vertical rod (15) to the clamping groove (22) under the pushing of the thermal expansion rod (8), and a structure for discharging heat is driven under the matching of the rack (19) and the clamping plate (11).

5. The flameproof and safe shell for the alternating-current frequency converter according to claim 4, wherein a push rod motor (23) is fixed at one end of the cross rod (18), an output shaft of the push rod motor (23) is connected with one end of the rack (19), a connecting strip (24) which is integrated with the rack (19) is arranged on one side of the rack (19) along the length direction of the rack, and a sliding groove (25) which is matched with the connecting strip (24) for use is arranged on the cross rod (18).