CN210745727U - Steel plate for explosion-proof control cabinet - Google Patents

Abstract

The utility model relates to an explosion-proof cabinet technical field, concretely relates to steel sheet for explosion-proof control cabinet. The utility model provides a pair of steel sheet for explosion-proof control cabinet aims at overcoming the current for explosion-proof control cabinet steel sheet that exists among the background art and walks the unreasonable problem of line structural design. The utility model discloses a steel sheet for explosion-proof switch board, including steel sheet, wire guide and metallic channel, the wire guide is a shoulder hole, the wire guide include the step and with the hole, the step up end is seted up flutedly, the recess is provided with the third fillet with the step medial surface intersection, the recess is located between wire guide and the hole; the symmetry axis of metallic channel length direction passes the center pin of wire guide, and the metallic channel all is provided with the locking wire portion of restricting the cable in the metallic channel along length direction's both ends, still is provided with the dismantlement groove, and the metallic channel passes the dismantlement groove setting, and the junction of dismantlement groove and metallic channel all is provided with first fillet, and one side of dismantling groove width direction still is provided with the aperture that is used for the fixed buckle of installation.

Description

Steel plate for explosion-proof control cabinet

Technical Field

The utility model belongs to the technical field of explosion-proof cabinet technique and specifically relates to a steel sheet for explosion-proof control cabinet is related to.

Background

The explosion-proof cabinet is divided into a plurality of names, generally, an explosion-proof distribution box, an explosion-proof control box, an explosion-proof power distribution cabinet and the like, and can be called as an explosion-proof cabinet, the product name is generally determined according to the use condition when a manufacturer classifies the product name, the explosion-proof cabinet is mainly used for a plurality of automatic control devices such as underground coal mine drainage automatic control, belt transportation automatic control, coal mine power supply and the like, a PLC (programmable logic controller) is adopted as core equipment, and the explosion-proof cabinet has strong applicability, expandability, high reliability and strong communication capability, and the logic control mode can be realized through the programming of software, so that the complex control logic becomes simple and easy.

The shell of explosion-proof cabinet is aluminum alloy die-casting or steel sheet welded fastening, surperficial high-pressure static spraying plastics, the appearance is pleasing to the eye, however the line structural design of walking of the explosion-proof cabinet of the majority is unreasonable, the cable often need buckle great angle and just can install on explosion-proof cabinet, just so make the punishment of buckling of cable be in the great state of stress for a long time, accelerated the ageing of cable, it is too much to walk the position edges and corners of line structure and cable contact simultaneously, it is great to the wearing and tearing on cable surface in the middle of with the extrusion of cable.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a steel sheet for explosion-proof control cabinet to solve the current for explosion-proof control cabinet that exists among the background art on the steel sheet walk line structural design unreasonable problem.

Realize above-mentioned purpose the technical scheme of the utility model be, an explosion-proof steel sheet for switch board.

The steel plate for the explosion-proof control cabinet manufactured by the technical scheme of the utility model comprises a steel plate body, a wire hole and a wire groove which are arranged on the steel plate and are used for a cable to pass through, wherein the wire hole is a through hole, the wire hole is a stepped hole, the wire hole comprises a step with a circular ring-shaped cross section and an inner hole which is concentrically arranged with the step, the upper end surface of the step is provided with a groove, the intersection of the groove and the inner side surface of the step is provided with a third fillet, and the groove is positioned between the wire groove and the inner hole; the wire guide groove is a rectangular groove, a symmetrical axis in the length direction of the wire guide groove penetrates through a central shaft of the wire guide hole, the distance between one end, close to the wire guide hole, of the length direction of the wire guide groove and the wire guide hole is 12mm-30mm, wire locking parts are arranged at two ends of the wire guide groove in the length direction, each wire locking part is a bent iron sheet, the cross section of each wire locking part is in a semicircular shape, the concave surface of each wire locking part faces the wire guide groove, one end of each wire locking part is connected with the steel plate, and a gap for a cable to pass through is reserved between the other end of each wire locking part and the steel plate; the wire groove is located adjacently still be provided with the dismantlement groove between the locking wire portion, the wire groove passes the dismantlement groove sets up, the dismantlement groove is a rectangular groove, the length direction of dismantlement groove with the length direction of wire groove is the same, the width of dismantlement groove is greater than the width of wire groove, the dismantlement groove with the junction of wire groove all is provided with first fillet, one side of dismantling groove width direction still is provided with the aperture that is used for the fixed buckle of installation.

One end, far away from the end connected with the steel plate, of the wire locking part is arranged to be in an arc shape.

And a rubber sleeve is further arranged at one end, far away from the steel plate, of the line locking part.

The hole with still be provided with the rubber packing ring between the step inner wall, the upper surface of rubber packing ring is not less than the lower extreme of recess, the upper surface of rubber packing ring is less than the upper end of recess, the internal diameter of rubber packing ring is not less than the diameter of hole, the internal diameter of rubber packing ring is greater than the follow the diameter of the cable that passes in the hole.

The height difference between the upper surface of the rubber gasket and the lower end of the groove is 0-3 mm.

And a second fillet is inverted on the inner ring of the upper end face of the rubber gasket.

The small holes are arranged on the symmetry axis in the width direction of the dismounting groove, and the distance between one end of each small hole close to the dismounting groove and the dismounting groove is 2mm-3 mm.

The lower end of the groove is an inclined plane, and the lower end of the groove inclines towards the direction of the wire guide groove.

The lower end of the groove is inclined at an angle of 10-30 degrees.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

the arrangement of the dismounting groove facilitates that in the process of dismounting the cable from the wire guide groove, a worker hooks the cable out of the dismounting groove by extending fingers into a gap between the cable and the edge of the dismounting groove, and applies a certain force to enable the cable to be separated from the wire guide groove from the gap of the wire locking part; the arrangement of the third fillet enables the side wall of the groove to be in smooth transition with the inner side of the step, the part of the cable extending out of the inner hole to the groove cannot be abraded and scratched due to the edge angle at the intersection of the side wall of the groove and the inner side of the step, and the arrangement of the first fillet enables the outer layer rubber sleeve of the cable not to be scratched and abraded by the sharp edge angle at the connection of the detaching groove and the wire guide groove when a worker detaches the cable from the wire guide groove, so that the service life of the cable is guaranteed; the small holes are used for installing the fixing buckles, so that the cables in the dismounting grooves are limited and fixed. The setting of the arc-shaped locking wire part is when the staff passes through the locking wire part card to be clamped into the wire guide, the cable can not be scratched or abraded by the sharp edge of the locking wire part, meanwhile, the staff is required to apply certain force with hands during installation to plug the cable in from the locking wire part, the setting of the arc-shaped end part can prevent the staff from being scratched by the hands during operation, and the personal safety of the staff is guaranteed. The setting of rubber sleeve can prevent effectively that the cable that is in the metallic channel from droing from the clearance of locking wire portion, and the setting of rubber sleeve can prevent simultaneously that the staff from by the fish tail, has ensured staff's personal safety.

Drawings

Fig. 1 is a structural plan view of a steel plate for an explosion-proof control cabinet according to the present invention;

fig. 2 is a structural plan view of a steel plate for an explosion-proof control cabinet according to the present invention;

FIG. 3 is a partial structural sectional view of a steel plate for an explosion-proof control cabinet according to the present invention;

fig. 4 is a partial structural sectional view of a steel plate for an explosion-proof control cabinet according to the present invention;

fig. 5 is a partial structural sectional view of a steel plate for an explosion-proof control cabinet of the present invention.

In the figure, 1, steel plate; 2. a wire guide hole; 3. a wire guide groove; 4. a step; 5. a groove; 6. an inner bore; 7. a first rounded corner; 8. a second rounded corner; 9. a third fillet; 10. a wire locking portion; 11. a small hole; 12. disassembling the groove; 13. a rubber sleeve; 14. a rubber gasket.

Detailed Description

The utility model discloses a specifically describe below with the accompanying drawing, as shown in fig. 1 to 5, an explosion-proof steel sheet for switch board, including steel sheet 1 body, set up wire guide 2 and the metallic channel 3 that supplies the cable to pass through on steel sheet 1, wire guide 2 is a through-hole.

Referring to fig. 1 to 5, the wire guide hole 2 is a stepped hole, the wire guide hole 2 includes a step 4 with a circular cross section and an inner hole 6 concentrically arranged with the step 4, the upper end surface of the step 4 is provided with a groove 5, the intersection of the groove 5 and the inner side surface of the step 4 is provided with a third fillet 9, and the groove 5 is located between the wire guide groove 3 and the inner hole 6; the wire guide groove 3 is a rectangular groove, a symmetry axis of the length direction of the wire guide groove 3 penetrates through a central shaft of the wire guide hole 2, the distance between one end, close to the wire guide hole 2, of the length direction of the wire guide groove 3 and the wire guide hole 2 is 12mm-30mm, wire locking parts 10 are arranged at two ends of the wire guide groove 3 along the length direction, each wire locking part 10 is a bent iron sheet, the cross section of each wire locking part 10 is in a semicircular shape, the concave surface of each wire locking part 10 faces the wire guide groove 3, one end of each wire locking part 10 is connected with the steel plate 1, and a gap for a cable to pass through is reserved between the other end of each wire locking part 10 and the steel plate 1; the wire groove 3 is located and still is provided with the dismantlement groove 12 between the adjacent locking wire portion 10, the wire groove 3 passes the setting of dismantlement groove 12, the dismantlement groove 12 is a rectangular groove, the length direction of dismantling groove 12 is the same with the length direction of wire groove 3, the width of dismantling groove 12 is greater than the width of wire groove 3, the junction of dismantling groove 12 and wire groove 3 all is provided with first fillet 7, one side of dismantling 12 width direction of groove still is provided with the aperture 11 that is used for the fixed buckle of installation. The steel plate 1 for the explosion-proof control cabinet is one of the steel plates 1 on the shell of the explosion-proof control cabinet, a cable in the explosion-proof control cabinet penetrates out of the explosion-proof control cabinet through an inner hole 6 in a wire guide hole 2, then penetrates through a groove 5 on a step 4, under the guiding action of the groove 5, the cable penetrating out of the wire guide hole 2 extends towards the direction of the wire guide groove 3, then the cable is arranged in the wire guide groove 3 from the gap of a wire locking part 10, the diameter of the arranged cable is slightly larger than the gap of the wire locking part 10 and is not larger than the width of the wire guide groove 3, when the cable is arranged in the wire guide groove 3, the cable is inserted into the wire guide groove 3 from the gap of the wire locking part 10 by utilizing the elasticity and the ductility of a cable outer rubber sleeve 13, a certain force is exerted on the cable, the cable enters from one end of the wire guide groove 3 close to the wire guide hole 2 in the length direction under the guiding action, the wire guide groove 3 penetrates out from one end far away from the wire guide hole 2 in the length direction; the middle part of the wire guide groove 3 is also provided with a dismounting groove 12 with the width larger than that of the wire guide groove 3, so that the gap between the cable and the edge of the dismounting groove 12 is larger than the gap between the cable and the edge of the wire guide groove 3, the arrangement of the dismounting groove 12 is convenient for a worker to hook the cable out of the dismounting groove 12 by extending fingers into the gap between the cable and the edge of the dismounting groove 12 in the process of dismounting the cable from the wire guide groove 3, and simultaneously, a certain force is applied to enable the cable to be separated from the wire guide groove 3 from the gap of the wire locking part 10; a distance of 12mm-30mm is arranged between one end, close to the wire guide hole 2, of the wire guide groove 3 in the length direction and the wire guide hole 2, so that a sufficient bending space is provided for the cable to be routed from the wire guide hole 2 to the wire guide groove 3, a large bending angle cannot be generated at a certain position of the cable, and the outer rubber sleeve 13 of the cable is always in a tensioned state, so that the aging and damage of the outer rubber sleeve 13 of the cable are accelerated; the third fillet 9 enables the side wall of the groove 5 to be in smooth transition with the inner side of the step 4, the part of the cable extending out of the inner hole 6 to the groove 5 cannot be abraded and scratched due to the edge angle at the intersection of the side wall of the groove 5 and the inner side of the step 4 due to the arrangement, and the first fillet 7 enables the outer layer rubber sleeve 13 of the cable not to be scratched and abraded by the sharp edge angle at the connection of the dismounting groove 12 and the wire guide groove 3 when a worker demounts the cable from the wire guide groove 3, so that the service life of the cable is guaranteed; the small holes 11 are used for installing and fixing the buckles, so that the cables in the dismounting grooves 12 are limited and fixed.

Referring to fig. 1 and 3, the locking line portion 10 is formed in a circular arc shape away from the end connected to the steel plate 1. The arc-shaped end part can prevent the hand from being scratched when the worker operates, and personal safety of the worker is guaranteed.

Referring to fig. 2 and 4, the locking line part 10 is further provided with a rubber sleeve 13 at an end away from the end connected with the steel plate 1. Because the frictional force between rubber and the rubber is greater than the frictional force that compares between the iron, the setting of rubber sleeve 13 can effectively prevent to be in the cable of metallic channel 3 and drop from the clearance of locking wire portion 10, and the setting of rubber sleeve 13 can prevent that the staff from by the fish tail simultaneously, has ensured staff's personal safety.

Referring to fig. 1 to 5, a rubber gasket 14 is further arranged between the inner hole 6 and the inner wall of the step 4, the upper surface of the rubber gasket 14 is not lower than the lower end of the groove 5, the upper surface of the rubber gasket 14 is lower than the upper end of the groove 5, the inner diameter of the rubber gasket 14 is not smaller than the diameter of the inner hole 6, and the inner diameter of the rubber gasket 14 is larger than the diameter of a cable passing through the inner hole 6. The part that the recess 5 was buckled to wearing out in the hole 6 to the cable has been protected to the setting of rubber packing ring 14, prevents that this part cable from receiving the extrusion of edges and corners between step 4 and the recess 5 for a long time to lead to the rubber sleeve 13 on cable outer layer to receive the effect of concentration for a long time and accelerated ageing.

Referring to fig. 3 to 5, the height difference between the upper surface of the rubber packing 14 and the lower end of the groove 5 is 0mm to 3 mm. The part that the recess 5 was buckled to wearing out in the hole 6 to the cable has been protected to the setting of rubber packing ring 14, prevents that this part cable from receiving the extrusion of edges and corners between step 4 and the recess 5 for a long time to lead to the rubber sleeve 13 on cable outer layer to receive the effect of concentration for a long time and accelerated ageing.

Referring to fig. 5, the inner circumference of the upper end surface of the rubber packing 14 is chamfered with a second round corner 8. The setting up of second fillet 8 makes the atress more even on the contact surface of cable and rubber packing ring 14, has further reduced the influence of concentrated power to the cable, has ensured the life of cable.

Referring to fig. 1 to 2, the small hole 11 is arranged on a symmetry axis in the width direction of the disassembly groove 12, and the distance between one end of the small hole 11 close to the disassembly groove 12 and the disassembly groove 12 is 2mm-3 mm. The setting of aperture 11 is used for the fixed buckle of installation to this comes to carry on spacingly and fixed to the cable that is in the groove 12 of dismantling, designs aperture 11 simultaneously extremely near the groove 12 of dismantling for fixed buckle can design very little, has saved the material, can design into the shape of closely laminating with the cable with fixed buckle simultaneously, has strengthened the fixed effect to the cable.

Referring to fig. 3 to 5, the lower end of the groove 5 is formed as an inclined surface, and the lower end of the groove 5 is inclined in the direction of the wire guide 3. Because the cable is crooked to the metallic channel 3 on steel sheet 1 surface through recess 5 after wearing out from hole 6, the setting up of 5 lower extreme inclined planes of recess has reduced the resistance that the cable received when crooked to metallic channel 3, has reduced the edges and corners of recess 5 bottom surfaces and 4 outer walls junctures of step and has produced the concentrated power to the cable, has reduced extrusion and the wearing and tearing to the cable, has ensured the life of cable.

Referring to fig. 3 to 5, the lower end of the groove 5 is inclined at an angle of 10 to 30. Because the cable is crooked to the metallic channel 3 on steel sheet 1 surface through recess 5 after wearing out from hole 6, the setting up of 5 lower extreme inclined planes of recess has reduced the resistance that the cable received when crooked to metallic channel 3, has reduced the edges and corners of recess 5 bottom surfaces and 4 outer walls junctures of step and has produced the concentrated power to the cable, has reduced extrusion and the wearing and tearing to the cable, has ensured the life of cable.

The working principle is as follows:

the steel plate 1 for the explosion-proof control cabinet is one of the steel plates 1 on the shell of the explosion-proof control cabinet, a cable in the explosion-proof control cabinet penetrates out of the explosion-proof control cabinet through an inner hole 6 in a wire guide hole 2, then penetrates through a groove 5 on a step 4, under the guiding action of the groove 5, the cable penetrating out of the wire guide hole 2 extends towards the direction of the wire guide groove 3, then the cable is arranged in the wire guide groove 3 from the gap of a wire locking part 10, the diameter of the arranged cable is slightly larger than the gap of the wire locking part 10 and is not larger than the width of the wire guide groove 3, when the cable is arranged in the wire guide groove 3, the cable is inserted into the wire guide groove 3 from the gap of the wire locking part 10 by utilizing the elasticity and the ductility of a cable outer rubber sleeve 13, a certain force is exerted on the cable, the cable enters from one end of the wire guide groove 3 close to the wire guide hole 2 in the length direction under the guiding action, the wire guide groove 3 penetrates out from one end far away from the wire guide hole 2 in the length direction; the middle part of the wire guide groove 3 is also provided with a dismounting groove 12 with the width larger than that of the wire guide groove 3, so that the gap between the cable and the edge of the dismounting groove 12 is larger than the gap between the cable and the edge of the wire guide groove 3, the arrangement of the dismounting groove 12 is convenient for a worker to hook the cable out of the dismounting groove 12 by extending fingers into the gap between the cable and the edge of the dismounting groove 12 in the process of dismounting the cable from the wire guide groove 3, and simultaneously, a certain force is applied to enable the cable to be separated from the wire guide groove 3 from the gap of the wire locking part 10; a distance of 12mm-30mm is arranged between one end, close to the wire guide hole 2, of the wire guide groove 3 in the length direction and the wire guide hole 2, so that a sufficient bending space is provided for the cable to be routed from the wire guide hole 2 to the wire guide groove 3, a large bending angle cannot be generated at a certain position of the cable, and the outer rubber sleeve 13 of the cable is always in a tensioned state, so that the aging and damage of the outer rubber sleeve 13 of the cable are accelerated; the third fillet 9 enables the side wall of the groove 5 to be in smooth transition with the inner side of the step 4, the part of the cable extending out of the inner hole 6 to the groove 5 cannot be abraded and scratched due to the edge angle at the intersection of the side wall of the groove 5 and the inner side of the step 4 due to the arrangement, and the first fillet 7 enables the outer layer rubber sleeve 13 of the cable not to be scratched and abraded by the sharp edge angle at the connection of the dismounting groove 12 and the wire guide groove 3 when a worker demounts the cable from the wire guide groove 3, so that the service life of the cable is guaranteed; the small holes 11 are used for installing and fixing the buckles, so that the cables in the dismounting grooves 12 are limited and fixed.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims (9)

1. The utility model provides an explosion-proof steel sheet for switch board, includes steel sheet (1) body, sets up wire guide (2) and metallic channel (3) that supply cable on steel sheet (1) passes through, wire guide (2) are a through-hole, its characterized in that: the wire guide hole (2) is a stepped hole, the wire guide hole (2) comprises a step (4) with a circular cross section and an inner hole (6) concentrically arranged with the step (4), a groove (5) is formed in the upper end face of the step (4), a third round angle (9) is arranged at the intersection of the groove (5) and the inner side face of the step (4), and the groove (5) is located between the wire guide groove (3) and the inner hole (6); the wire guide groove (3) is a rectangular groove, a symmetry axis of the length direction of the wire guide groove (3) penetrates through a central shaft of the wire guide hole (2), the distance between one end, close to the wire guide hole (2), of the length direction of the wire guide groove (3) and the wire guide hole (2) is 12mm-30mm, wire locking parts (10) are arranged at two ends of the wire guide groove (3) along the length direction, each wire locking part (10) is a bent iron sheet, the cross section of each wire locking part (10) is semicircular, a concave surface of each wire locking part (10) faces the wire guide groove (3), one end of each wire locking part (10) is connected with the steel plate (1), and a gap for a cable to pass through is reserved between the other end of each wire locking part (10) and the steel plate (1); wire casing (3) are located adjacently still be provided with between locking wire portion (10) and dismantle groove (12), wire casing (3) are passed dismantle groove (12) setting, dismantle groove (12) are a rectangular groove, the length direction of dismantle groove (12) with the length direction of wire casing (3) is the same, the width of dismantle groove (12) is greater than the width of wire casing (3), dismantle groove (12) with the junction of wire casing (3) all is provided with first fillet (7), one side of dismantle groove (12) width direction still is provided with aperture (11) that are used for installing fixed buckle.

2. The steel plate for the explosion-proof control cabinet according to claim 1, characterized in that: one end, far away from the end connected with the steel plate (1), of the locking line part (10) is arranged to be in an arc shape.

3. The steel plate for the explosion-proof control cabinet according to claim 1, characterized in that: and a rubber sleeve (13) is further arranged at one end, far away from the steel plate (1), of the line locking part (10).

4. The steel plate for the explosion-proof control cabinet according to claim 1, characterized in that: hole (6) with still be provided with rubber packing ring (14) between step (4) inner wall, the upper surface of rubber packing ring (14) is not less than the lower extreme of recess (5), the upper surface of rubber packing ring (14) is less than the upper end of recess (5), the internal diameter of rubber packing ring (14) is not less than the diameter of hole (6), the internal diameter of rubber packing ring (14) is greater than the follow the diameter of the cable that passes in hole (6).

5. The steel plate for the explosion-proof control cabinet according to claim 4, characterized in that: the height difference between the upper surface of the rubber gasket (14) and the lower end of the groove (5) is 0-3 mm.

6. The steel plate for the explosion-proof control cabinet according to claim 5, characterized in that: and a second fillet (8) is inverted on the inner ring of the upper end surface of the rubber gasket (14).

7. The steel plate for the explosion-proof control cabinet according to claim 1, characterized in that: the small hole (11) is arranged on a symmetry axis in the width direction of the dismounting groove (12), and the distance between one end of the small hole (11) close to the dismounting groove (12) and the dismounting groove (12) is 2mm-3 mm.

8. The steel plate for the explosion-proof control cabinet according to claim 1, characterized in that: the lower end of the groove (5) is an inclined plane, and the lower end of the groove (5) inclines towards the direction of the wire guide groove (3).

9. The steel plate for the explosion-proof control cabinet according to claim 8, wherein: the lower end of the groove (5) is inclined at an angle of 10-30 degrees.

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