阅读说明：本技术 一种免维护防爆灯 (Maintenance-free explosion-proof lamp ) 是由 毛德平 王伟 陆智强 杨颂感 黄良德 于 2021-01-08 设计创作，主要内容包括：本申请涉及一种免维护防爆灯,其包括有电源腔体,电源腔体内设置有驱动电源,所述电源腔体内侧壁上设置有支撑板,所述支撑板上设置有滑道,所述支撑板上通过滑道滑动设置有推拉板,所述驱动电源设置在推拉板上；所述电源腔体上还设置有开口朝向推拉板的维修孔,所述电源腔体上设置有将维修孔盖合的盖板；所述维修孔内侧壁上设置有隔爆框,所述盖板与隔爆框相互贴合。本申请具有简化了传统维修工作的步骤,提高了拆卸效率,当人体接近传感器检测到有人接近时,光源板将控制灯珠自动亮起,实现了自动开灯的功能,方便了夜间使用的效果。(The application relates to a maintenance-free explosion-proof lamp, which comprises a power supply cavity, wherein a driving power supply is arranged in the power supply cavity, a supporting plate is arranged on the inner side wall of the power supply cavity, a slide way is arranged on the supporting plate, a push-pull plate is arranged on the supporting plate in a sliding manner through the slide way, and the driving power supply is arranged on the push-pull plate; the power supply cavity is also provided with a maintenance hole with an opening facing the push-pull plate, and the power supply cavity is provided with a cover plate for covering the maintenance hole; and the inner side wall of the maintenance hole is provided with an explosion-proof frame, and the cover plate is attached to the explosion-proof frame. This application has the step of having simplified traditional maintenance work, has improved dismantlement efficiency, and when human proximity sensor detected someone and is close, the light source board will control the lamp pearl and light automatically, has realized the function of automatic switching on the light, has made things convenient for the effect of using night.)

1. The utility model provides a non-maintaining explosion-proof lamp, is provided with drive power supply (2), its characterized in that including power cavity (1) in power cavity (1): a support plate (11) is arranged on the inner side wall of the power supply cavity (1), a slide way (111) is arranged on the support plate (11), a push-pull plate (12) is arranged on the support plate (11) in a sliding mode through the slide way (111), and the driving power supply (2) is arranged on the push-pull plate (12); the power supply cavity (1) is also provided with a maintenance hole (13) with an opening facing the push-pull plate (12), and the power supply cavity (1) is provided with a cover plate (3) for covering the maintenance hole (13); be provided with flame proof frame (131) on maintenance hole (13) inside wall, apron (3) and flame proof frame (131) are laminated each other.

2. A maintenance-free explosion-proof lamp as defined in claim 1, wherein: a limiting seat (4) is arranged on the inner side wall of the power cavity (1), a slot (41) with an opening facing the maintenance hole (13) is formed in the limiting seat (4), and the push-pull plate (12) is inserted into the slot (41); a locking component (5) is arranged on the push-pull plate (12), and a plug connector (42) matched with the locking component (5) is arranged on the limiting seat (4); the plug connector (42) is arranged in the slot (41) in a sliding mode along a direction perpendicular to the sliding direction of the push-pull plate (12), a limiting groove (51) with an opening facing the plug connector (42) is formed in the locking assembly (5), and the plug connector (42) is inserted into the limiting groove (51).

3. A maintenance-free explosion-proof lamp as defined in claim 2, wherein: the locking assembly (5) also comprises a locking rod (52) arranged along the sliding direction of the push-pull plate (12); the locking rod (52) is rotatably arranged in the push-pull plate (12), and the limiting groove (51) is arranged on the locking rod (52); one end, far away from the limiting groove (51), of the locking rod (52) extends out of the maintenance hole (13), and the locking rod (52) is in contact with the cover plate (3).

4. A maintenance-free explosion-proof lamp as defined in claim 3, wherein: one end, far away from the locking rod (52), of the plug connector (42) extends out of the limiting seat (4), and a limiting plate (43) is arranged on the extended plug connector (42); a first spring (44) stretching along the sliding direction of the plug connector (42) penetrates through the plug connector (42), one end of the first spring (44) is fixed with the limiting plate (43), and the other end of the first spring (44) is in contact with the outer side wall of the limiting seat (4); the plug connector (42) is tightly inserted in the limiting groove (51) under the action of the first spring (44).

5. A maintenance-free explosion-proof lamp as defined in claim 3, wherein: the inner side wall of the limiting groove (51) is provided with a lifting plate (6), and the lifting plate (6) is arranged on the inner side wall of the limiting groove (51) in a sliding manner along the direction in which the plug connector (42) is inserted into the limiting groove (51); a swing plate (53) is rotatably arranged in the locking rod (52), and two ends of the swing plate (53) rotate around a rotating shaft; one end of the swing plate (53) is rotatably connected with the side wall of the lifting plate (6) departing from the plug connector (42), and the other end of the swing plate (53) penetrates out of the outer side wall of the locking rod (52).

6. A maintenance-free explosion-proof lamp as defined in claim 5, wherein: the locking rod (52) is provided with a yielding groove (54) communicated with the limiting groove (51), the yielding groove (54) is coaxial with the limiting groove (51), and the width of the yielding groove (54) is larger than that of the limiting groove (51); the lifting plate (6) slides along the depth direction of the yielding groove (54), a rubber sealing ring (61) is circumferentially arranged on the side wall of the lifting plate (6) facing the plug connector (42) in an encircling manner, and the rubber sealing ring (61) is attached to the side wall of the yielding groove (54).

7. A maintenance-free explosion-proof lamp as defined in claim 6, wherein: a second spring (531) is arranged at one end, far away from the lifting plate (6), of the swinging plate (53), and the second spring (531) stretches along the sliding direction of the lifting plate (6); one end of the second spring (531) is abutted against the swinging plate (53), and the other end of the second spring (531) is abutted against the locking rod (52); the second spring (531) is located on a side wall of the pivoting plate (53) facing away from the lifting plate (6).

8. A maintenance-free explosion-proof lamp as defined in claim 7, wherein: a light source cavity (7) is arranged below the power source cavity (1), a through wire arranging hole (121) is formed in the push-pull plate (12), and a cable penetrates through the wire arranging hole (121); a third spring (122) is arranged on the inner side wall of the wire arranging hole (121), one end of the third spring (122) is fixed with the wire arranging hole (121), and a pressing plate (123) is arranged at the other end of the second spring (122); a light source plate (71) is arranged in the light source cavity (7), a lamp bead (72) is electrically connected to the light source plate (71), and the light source plate (71) is electrically connected with the driving power supply (2) through a cable; the light source board (71) is electrically connected with a human body proximity sensor (73).

Technical Field

The application relates to the field of explosion-proof lamps, in particular to a maintenance-free explosion-proof lamp.

Background

The existing explosion-proof lamp is used in dangerous places where combustible gas and dust exist, and can prevent electric arcs, sparks and high temperature possibly generated in the lamp from igniting the combustible gas and dust in the surrounding environment, so that the lamp meets the explosion-proof requirement. Also called explosion-proof lamps and lanterns, explosion-proof light. Different flammable gas mixture environments have different requirements on the explosion-proof grade and the explosion-proof form of the explosion-proof lamp.

In the related art, there is a maintenance-free explosion-proof lamp, as shown in fig. 1, which includes a power cavity 1 located above, and a driving power supply 2 for converting a power supply into a specific voltage and current is disposed in the power cavity 1; a light source cavity 7 is screwed and fixed below the power source cavity 1 through a bolt, a light source plate 71 is installed in the light source cavity 3, the light source plate 71 is electrically connected with the driving power source 2, and when the LED lamp works, constant voltage and current are provided for a lamp bead 72 on the light source plate 71 through the driving power source 2; an outlet sleeve 8 is fixedly connected to the upper portion of the power cavity 1 through a bolt, a cable is inserted into the power cavity 1 from an upper opening of the outlet sleeve 8, and the cable is electrically connected with the driving power supply 2.

For the related technologies, the inventor thinks that there is a component which is important inside the explosion-proof lamp because the driving power supply is, when the driving power supply inside the light source cavity breaks down, the worker needs to maintain the driving power supply in time; when the explosion-proof lamp is maintained, a worker needs to detach the wiring cover and the light source cavity from the two ends of the light source cavity respectively, and then can smoothly maintain the driving power supply; this results in troublesome maintenance steps when the drive power supply is maintained.

Disclosure of Invention

In order to improve the comparatively loaded down with trivial details problem of drive power supply maintenance in-process step, this application provides a non-maintaining explosion-proof lamp.

The application provides a non-maintaining explosion-proof lamp adopts following technical scheme:

a maintenance-free explosion-proof lamp comprises a power supply cavity, wherein a driving power supply is arranged in the power supply cavity, a supporting plate is arranged on the inner side wall of the power supply cavity, a slide way is arranged on the supporting plate, a push-pull plate is arranged on the supporting plate in a sliding mode through the slide way, and the driving power supply is arranged on the push-pull plate; the power supply cavity is also provided with a maintenance hole with an opening facing the push-pull plate, and the power supply cavity is provided with a cover plate for covering the maintenance hole; and the inner side wall of the maintenance hole is provided with an explosion-proof frame, and the cover plate is attached to the explosion-proof frame.

By adopting the technical scheme, when the driving power supply in the power supply cavity needs to be maintained, only the cover plate needs to be detached from one side of the maintenance hole, so that the maintenance hole is exposed smoothly; then the push-pull plate is pulled out from the maintenance hole along the slide way, and the driving power supply can smoothly exit from the power supply cavity along with the push-pull plate through the maintenance hole; by pulling the driving power supply out of the power supply cavity, the driving power supply is convenient to maintain and replace, a larger operation space can be provided for maintenance personnel, and maintenance work in a narrow space of the power supply cavity is not needed; the fault point can be observed more visually, so that the maintenance efficiency of the driving power supply can be improved; the steps of the traditional maintenance work are simplified, and the disassembly efficiency is improved; when the cover plate closes the maintenance hole, the explosion-proof joint surface is formed by the mutual adhesion between the explosion-proof frame and the cover plate, so that the explosion-proof performance of the joint can be enhanced, and the overall safety is improved.

Preferably, a limiting seat is arranged on the inner side wall of the power supply cavity, a slot with an opening facing the maintenance hole is formed in the limiting seat, and the push-pull plate is inserted into the slot; the push-pull plate is provided with a locking assembly, and the limiting seat is provided with a plug connector matched with the locking assembly; the plug connector is arranged in the slot in a sliding mode along a direction perpendicular to the sliding direction of the push-pull plate, a limiting groove with an opening facing the plug connector is formed in the locking assembly, and the plug connector is inserted into the limiting groove.

By adopting the technical scheme, when the driving power supply is pushed into the power supply cavity from the maintenance hole through the push-pull plate, the end part of the push-pull plate is gradually inserted into the slot of the limiting seat; when the limiting groove on the locking assembly moves to be aligned with the plug connector, the plug connector is inserted into the limiting groove along the direction perpendicular to the sliding direction of the push-pull plate; through the splicing and matching between the plug connector and the locking assembly, the position of the push-pull plate is automatically limited, one end of the push-pull plate is locked in the power supply cavity, and the stability of the push-pull plate is improved.

Preferably, the locking assembly further comprises a locking rod arranged along the sliding direction of the push-pull plate; the locking rod is rotatably arranged in the push-pull plate, and the limiting groove is arranged on the locking rod; one end of the locking rod, which is far away from the limiting groove, extends out of the maintenance hole, and the locking rod is in contact with the cover plate.

By adopting the technical scheme, after one end of the push-pull plate is inserted into the slot, the opening of the limiting slot is rotated to be opposite to the plug connector by rotating the locking rod; at the moment, the plug connector is automatically inserted into the limit groove, and then the maintenance hole is covered by the cover plate; after the cover plate covers the maintenance hole tightly, the stability of the locking rod and the push-pull plate can be further improved through mutual contact between the cover plate and the locking rod.

Preferably, one end of the plug connector, which is far away from the locking rod, extends out of the limiting seat, and a limiting plate is arranged on the extended plug connector; a first spring which stretches and retracts along the sliding direction of the plug connector penetrates through the plug connector, one end of the first spring is fixed with the limiting plate, and the other end of the first spring is in contact with the outer side wall of the limiting seat; the plug connector is tightly inserted in the limiting groove under the action of the first spring.

By adopting the technical scheme, when the end part of the push-pull plate is gradually inserted into the slot, the end part of the push-pull plate pushes the plug connector to gradually withdraw from the slot, and at the moment, the first spring is gradually compressed; when the limiting groove on the locking rod is rotated to be aligned with the plug connector, the plug connector can downwards press the plug connector on the inner side wall of the limiting groove under the action of the elastic force of the first spring, the locking strength of the plug connector on the push-pull plate can be greatly improved through the first spring, and the push-pull plate can be more stably and firmly limited and fixed in a power supply cavity.

Preferably, the inner side wall of the limit groove is provided with a lifting plate, and the lifting plate is arranged on the inner side wall of the limit groove in a sliding manner along the direction in which the plug connector is inserted into the limit groove; a swinging plate is rotationally arranged in the locking rod, and two ends of the swinging plate rotate around a rotating shaft; one end of the swing plate is rotatably connected with the side wall of the lifting plate, which is away from the plug connector, and the other end of the swing plate penetrates out of the outer side wall of the locking rod.

By adopting the technical scheme, when the push-pull plate needs to be pulled out of the power supply cavity, the swinging plate which penetrates out of the outer side wall of the locking rod is pressed downwards, and the other end of the swinging plate rotates in the opposite direction around the rotating shaft along with the pressing of one end of the swinging plate; the lifting plate pushes the plug connector to gradually withdraw from the limiting groove along with the rotation of the swinging plate, when the plug connector smoothly withdraws from the limiting groove, the opening of the limiting groove rotates to deviate from the plug connector by rotating the locking rod, and at the moment, the unlocking of the push-pull plate is realized, and the push-pull plate can be smoothly pulled out from the power supply cavity after the locking is released; the whole unlocking process is very convenient and fast.

Preferably, the locking rod is provided with a yielding groove communicated with the limiting groove, the yielding groove is coaxial with the limiting groove, and the width of the yielding groove is greater than that of the limiting groove; the lifting plate slides along the depth direction of the yielding groove, a rubber sealing ring is circumferentially arranged on the side wall of the lifting plate facing the plug connector in an encircling manner, and the rubber sealing ring is attached to the side wall of the yielding groove.

Through adopting above-mentioned technical scheme, when the plug connector inserted to the spacing inslot, the plug connector will with the upper surface contact of lifting board, rubber seal circle this moment will be circumference and encircle around the plug connector, can seal power cavity and locking lever junction completely through the rubber seal circle, be formed with the flame proof composition surface in both junctions to can prevent that inside explosion from spreading to the shell around in the explosive gas atmosphere, improved holistic security.

Preferably, a second spring is arranged at one end of the swinging plate far away from the lifting plate, and the second spring extends and retracts along the sliding direction of the lifting plate; one end of the second spring is abutted against the swinging plate, and the other end of the second spring is abutted against the locking rod; the second spring is located on a side wall of the swing plate facing away from the lift plate.

By adopting the technical scheme, in a natural state, one end of the locking rod can be jacked upwards by the second spring, at the moment, the lifting plate at the other end of the locking rod is pulled downwards to the bottom of the limiting groove, and at the moment, the opening of the limiting groove is in an open state; the plug connector can be more smoothly inserted into the limiting groove under the action of the second spring, and the phenomenon that the lifting plate is blocked at the opening of the limiting groove is reduced.

Preferably, a light source cavity is arranged below the power supply cavity, a through cable arranging hole is formed in the push-pull plate, and a cable penetrates through the cable arranging hole; a third spring is arranged on the inner side wall of the wire arranging hole, one end of the third spring is fixed with the wire arranging hole, and the other end of the second spring is provided with a pressing plate; a light source plate is arranged in the light source cavity, a lamp bead is electrically connected to the light source plate, and the light source plate is electrically connected with a driving power supply through a cable; the light source board is electrically connected with a human body proximity sensor.

By adopting the technical scheme, when the driving power supply is in cable connection with the light source plate, the cable passes through the cable arranging hole, and the pressing plate can press the cable on the inner side wall of the cable arranging hole under the action of the third spring; the cables can be tightly pressed and fixed through the pressing plate and the third spring, when the push-pull plate is pulled out from the power supply cavity, the cables close to one end of the driving power supply can be pulled out together with the push-pull plate, and therefore the separation of the cables connected with the output end of the driving power supply and the driving power supply can be reduced; because the last electricity of light source board is connected with human proximity sensor, when human proximity sensor detected someone and is close, the light source board will control the lamp pearl and light automatically, has realized the function of automatic switching on, has made things convenient for and has used night.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by pulling the driving power supply out of the power supply cavity, the driving power supply is convenient to maintain and replace, a larger operation space can be provided for maintenance personnel, and maintenance work in a narrow space of the power supply cavity is not needed; the fault point can be observed more visually, so that the maintenance efficiency of the driving power supply can be improved; the steps of the traditional maintenance work are simplified, and the disassembly efficiency is improved;

2. the position of the push-pull plate is automatically limited by the insertion and the matching of the plug connector and the locking assembly, so that one end of the push-pull plate is locked in the power supply cavity, and the stability of the push-pull plate is improved;

3. when human proximity sensor detects someone and is close, the light source board will control the lamp pearl and light automatically, has realized the function of automatic switching on the light, has made things convenient for and has used night.

Drawings

Fig. 1 is a schematic cross-sectional view of a maintenance-free explosion-proof lamp in the related art.

Fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Fig. 3 is a partial schematic view of the support plate shown in fig. 2.

Fig. 4 is a partial schematic view of the push-pull plate of fig. 3 where the push-pull plate is highlighted.

FIG. 5 is an exploded view of the portion of FIG. 1 at the highlighted repair hole.

Fig. 6 is an exploded view of the portion of fig. 4 where the locking rod is highlighted.

Fig. 7 is a schematic cross-sectional view of a portion of the locking lever interior of fig. 6.

Description of reference numerals: 1. a power supply cavity; 11. a support plate; 111. a slideway; 12. a push-pull plate; 121. a wire arranging hole; 122. a third spring; 123. pressing a plate; 124. inserting a rod; 13. a repair hole; 131. an explosion-proof frame; 2. a drive power supply; 3. a cover plate; 4. a limiting seat; 41. a slot; 42. a plug-in unit; 43. a limiting plate; 44. a first spring; 5. a locking assembly; 51. a limiting groove; 52. a locking lever; 53. a swing plate; 531. a second spring; 54. a yielding groove; 6. lifting the plate; 61. sealing a ring with rubber; 62. a bump; 7. a light source cavity; 71. a light source plate; 72. a lamp bead; 73. a human proximity sensor; 8. a wire outlet sleeve; 81. and (5) sealing rings.

Detailed Description

The present application is described in further detail below with reference to figures 2-7.

The embodiment of the application discloses a maintenance-free explosion-proof lamp. Referring to fig. 2 and 3, the maintenance-free explosion-proof lamp includes a wire outlet sleeve 8 located at the top, a wire inlet hole into which a power supply cable extends is arranged at the top of the wire outlet sleeve 8, a sealing ring 81 is arranged in the wire inlet hole, and the power supply cable is inserted into the wire outlet sleeve 8 from a central through hole of the sealing ring 81. A power cavity 1 is fixedly arranged below the outlet sleeve 8 through a hexagon socket head cap screw, and a driving power supply 2 for converting power supply into specific voltage and current is arranged in the power cavity 1. The lower part of the power cavity 1 is also fixedly screwed with a light source cavity 7 through an inner hexagonal combined screw, a light source plate 71 horizontally placed is fixedly installed inside the light source cavity 7, lamp beads 72 evenly spaced and arranged are electrically connected to the light source plate 71, and the light source plate 71 is electrically connected with the driving power supply 2 through a cable.

As shown in fig. 2, the human body proximity sensor 73 is electrically connected to the light source board 71, the human body proximity sensor 73 is arranged on the power supply circuit of the light source board 71, and when the human body proximity sensor 73 detects that someone is approaching, the light source board 71 automatically lights the control lamp bead 72, so that the function of automatically lighting the lamp can be realized, and the use of the worker at night is facilitated.

As shown in fig. 2 and 3, a horizontal support plate 11 is welded and fixed on the inner side wall of the power cavity 1, a through hole which is through from top to bottom is formed in the support plate 11, and the power cavity 1 is communicated with the light source cavity 7 through the through hole.

As shown in fig. 3 and 4, the support plate 11 is symmetrically divided into two sections by the through hole, the upper surface of each section of the support plate 11 is provided with a slide rail 111, and the slide rails 111 are symmetrically arranged on two sides of the through hole. The same push-pull plate 12 is slidably disposed on the support plate 11 through the slideways 111 on both sides, the lower end surface of the push-pull plate 12 is fixedly provided with the insertion rods 124 respectively inserted into the corresponding slideways 111, and the insertion rods 124 drive the push-pull plate 12 to be slidably disposed on the support plate 11 along the horizontal direction.

As shown in fig. 4 and 5, a through maintenance hole 13 is provided on the outer side wall of the power supply chamber 1, and the maintenance hole 13 opens toward the push-pull plate 12. The push-pull plate 12 can be smoothly pulled out from the power supply cavity 1 through the maintenance hole 13. The insertion rods 124 are symmetrically arranged, and the insertion rods 124 are located at one end of the push-pull plate 12 far away from the service hole 13. The inner side wall of the maintenance hole 13 is integrally formed with an explosion-proof frame 131, and the explosion-proof frame 131 circumferentially surrounds the maintenance hole 13. And a cover plate 3 for covering the maintenance hole 13 is screwed and fixed outside the explosion-proof frame 131 through bolts, and the cover plate 3 and the explosion-proof frame 131 are mutually attached to form an explosion-proof joint surface.

As shown in fig. 3 and 5, a limiting seat 4 located above the through hole of the supporting plate 11 is fixedly installed on the inner side wall of the power cavity 1, a slot 41 with an opening facing the maintenance hole 13 is formed in the limiting seat 4, and one end of the push-pull plate 12 far away from the maintenance hole 13 is inserted into the slot 41. The push-pull plate 12 is provided with a locking assembly 5 for limiting and fixing the push-pull plate 12 in the limiting seat 4, the locking assembly 5 comprises two locking rods 52 arranged along the sliding direction of the push-pull plate 12, and the two locking rods 52 are symmetrically arranged. The locking rod 52 is located in the push-pull plate 12, and the locking rod 52 is rotatably disposed on the push-pull plate 12, and the rotating shaft of the locking rod 52 is horizontally disposed. The end of the locking rod 52 remote from the service hole 13 is inserted into the slot 41 following the push-pull plate 12. The locking rod 52 in the slot 41 is provided with a limiting groove 51. One end of the locking rod 52 far away from the limiting groove 51 extends out of the maintenance hole 13, and the extended locking rod 52 is contacted with the cover plate 3.

As shown in fig. 3 and 6, two sets of plug-in units 42 for being plugged and matched with the corresponding locking rods 52 are disposed on the limit seat 4, and the plug-in units 42 are slidably disposed on the limit seat 4 along a direction perpendicular to the sliding direction of the push-pull plate 12. The lower end of the plug 42 penetrates into the slot 41 from the upper surface of the limit seat 4, and the upper end of the plug 42 penetrates out from the upper surface of the limit seat 4.

As shown in fig. 3 and 6, a limit plate 43 is fixedly mounted on the plug 42 after penetrating out from the upper surface of the limit seat 4, the limit plate 43 is located at the top of the plug 42, and the width of the limit plate 43 is greater than that of the plug 42. The plug 42 is provided with a first spring 44 penetrating between the limiting plate 43 and the upper surface of the limiting seat 4, and the first spring 44 extends and retracts along the sliding direction of the plug 42. The upper end of the first spring 44 is fixed to the limit plate 43, and the lower end of the first spring 44 is fixed to the upper surface of the limit seat 4. When the opening of the limiting groove 51 on the locking rod 52 is rotated to be aligned with the lower end of the plug 42, the plug 42 is pressed in the limiting groove 51 by the elastic force of the first spring 44.

As shown in fig. 6 and 7, the locking lever 52 is provided with an avoiding groove 54 communicating with the limiting groove 51, the avoiding groove 54 is coaxial with the limiting groove 51, and the radius of the avoiding groove 54 is larger than that of the limiting groove 51. The locking lever 52 is provided with a lifting plate 6 through an avoiding groove 54, and the lifting plate 6 is slidably provided on an inner side wall of the avoiding groove 54 in a direction in which the plug 42 is inserted into the stopper groove 51. The side wall of the lifting plate 6 facing the plug 42 is formed with a protrusion 62 located in the limiting groove 51, and when the lower end of the plug 42 is inserted into the limiting groove 51, the plug 42 will interfere with the protrusion 62. A rubber sealing ring 61 circumferentially surrounding the protrusion 62 is fixedly bonded to the lifting plate 6, and the rubber sealing ring 61 is made of a rubber material with good elasticity. The rubber sealing ring 61 is located in the receding groove 54, and the rubber sealing ring 61 is tightly pressed on the inner side wall of the receding groove 54. A flameproof joint will be formed around the projection 62 by the rubber seal 61.

As shown in fig. 6 and 7, the lock lever 52 is provided with a swing plate 53 rotating therein, the rotation shaft of the swing plate 53 is provided along the width direction of the swing plate 53, and both ends of the swing plate 53 rotate up and down around the rotation shaft. One end of the swinging plate 53 extends out of the locking rod 52 into the limiting groove 51, a waist-shaped hole is formed in the swinging plate 53 positioned in the limiting groove 51, a rotating rod is arranged on the side wall of the lifting plate 6 departing from the plug connector 42 and penetrates through the waist-shaped hole, and the swinging plate 53 is rotatably connected with the lifting plate 6 through the waist-shaped hole. When the swing plate 53 swings, the swing plate 53 drives the lifting plate 6 to slide along the depth direction of the limiting groove 51. One end of swing plate 53, which is far from lift plate 6, is extended out from the outer side wall of lock lever 52, and by pressing down the extended-out portion of swing plate 53, the other end of swing plate 53 drives lift plate 6 to eject plug 42 from stopper groove 51.

As shown in fig. 6 and 7, a second spring 531 is provided at one end of the swing plate 53 remote from the lift plate 6, and the second spring 531 extends and contracts in the sliding direction of the lift plate 6. One end of the second spring 531 is fixedly connected to the side wall of the swing plate 53 away from the lifting plate 6, and the other end of the second spring 531 is fixedly connected to the inner side wall of the locking lever 52. In a natural state, the second spring 531 pushes up one end of the locking lever 52, and the lifting plate 6 at the other end of the locking lever 52 is pulled down to the bottom of the limiting groove 51. The opening of the limiting groove 51 is in an open state at this time, and the plug 42 can be more smoothly inserted into the limiting groove 51 under the action of the second spring 531, so that the occurrence of the phenomenon that the lifting plate 6 is locked in the opening of the limiting groove 51 can be reduced.

As shown in fig. 3 and 4, a cable hole 121 is formed in the push-pull plate 12 and penetrates through the cable hole 121, and a cable on the driving power supply 2 penetrates into the lower light source cavity 7 through the cable hole 121. A third spring 122 is fixedly mounted on the inner side wall of the wire arranging hole 121, and the third spring 122 extends and retracts along the sliding direction of the push-pull plate 12. Third spring 122 one end is fixed with winding displacement hole 121 inside wall, and third spring 122 other end fixed mounting has and is curved clamp plate 123, and when wearing the cable in winding displacement hole 121, clamp plate 123 can compress tightly the cable at winding displacement hole 121's inside wall under the effect of third spring 122 to can play spacing fixed effect to the cable.

The implementation principle of a non-maintaining explosion-proof lamp of this application embodiment does: when the driving power supply 2 in the power cavity 1 needs to be maintained, the cover plate 3 is only required to be detached from one side of the maintenance hole 13, so that the maintenance hole 13 is exposed smoothly. By pressing down the swing plate 53 that has passed out from the outer side wall of the lock lever 52, the other end of the swing plate 53 rotates in the opposite direction around the rotational axis in accordance with the pressing down of one end of the swing plate 53. At this time, the lifting plate 6 pushes the plug connector 42 to gradually withdraw from the limiting groove 51 along with the rotation of the swinging plate 53, and after the plug connector 42 smoothly withdraws from the limiting groove 51, the opening of the limiting groove 51 rotates to deviate from the plug connector 42 by rotating the locking rod 52, so that the unlocking of the push-pull plate 12 is realized. The push-pull plate 12 can be smoothly pulled out from the power supply chamber 1 after the locking is released. At this time, the driving power supply 2 can smoothly exit from the power supply cavity 1 along with the push-pull plate 12 through the maintenance hole 13. Through pulling out drive power supply 2 from power cavity 1, not only made things convenient for and maintained drive power supply 2 and changed, also can provide bigger operating space for the maintenance personal simultaneously, need not to carry out maintenance work in the narrow and small space of power cavity 1. And the fault point can be observed more intuitively, so that the maintenance efficiency of the driving power supply 2 can be improved. The steps of traditional maintenance work are simplified, and the disassembly efficiency is improved. When the cover plate 3 covers the maintenance hole 13, an explosion-proof joint surface is formed by mutually attaching the explosion-proof frame 131 and the cover plate 3, so that the explosion-proof performance of the joint can be enhanced, and the overall safety is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.