CN212573391U - Maintenance-free high-frequency switching power supply direct-current power supply cabinet - Google Patents

Abstract

The utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet. Non-maintaining high frequency switching power supply DC power supply cabinet includes: a power supply cabinet; the exhaust fan is fixedly arranged at the top of the power cabinet; the box body is fixedly arranged at the top of the power cabinet; the transmission case is fixedly arranged on the inner wall of the top of the case body; the air inlet pipe is fixedly arranged on an air outlet of the exhaust fan, and one end of the air inlet pipe extends into the box body; the air outlet pipe is fixedly arranged on the inner wall of one side of the box body, which is far away from the air inlet pipe, and one end of the air outlet pipe extends to the inside of the power cabinet; the two filter cylinders are movably arranged at the top of the box body. The utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet has simple operation, effective radiating advantage.

Description

Maintenance-free high-frequency switching power supply direct-current power supply cabinet

Technical Field

The utility model relates to a DC power supply cabinet technical field especially relates to a non-maintaining high frequency switching power supply DC power supply cabinet.

Background

The direct-current power supply cabinet is used for large, medium and small power plants and transformer substations and is used as a direct-current power supply required by high-voltage switch opening and closing, power-off protection, automatic control, emergency lighting, light and sound signals and the like in normal operation and in accident states; it can also be used as DC power supply for metallurgy, railway, mine, petrochemical, post and telecommunications, communication, medical and health care, bank, hotel, high-rise building and computer network.

Commonly used to a non-maintaining high frequency switch power supply DC power supply cabinet among the prior art, this kind of power cabinet is in order to reach non-maintaining effect, seal protection is carried out with whole power cabinet mostly, prevent that the dust from getting into in the power cabinet and causing the influence to some high accuracy adjustment mechanism of power cabinet, and the heat when totally enclosed setting makes the power cabinet move can't the effluvium, the condition that the high temperature can appear in long-time use, influence the normal use of power cabinet, some equipment that probably can make in the power cabinet simultaneously are in the higher environment of temperature for a long time, influence the life of equipment, cause unnecessary loss.

Therefore, it is necessary to provide a maintenance-free high-frequency switching power supply dc power supply cabinet to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a simple operation, effective radiating non-maintaining high frequency switching power supply DC power supply cabinet.

In order to solve the technical problem, the utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet, include: a power supply cabinet; the exhaust fan is fixedly arranged at the top of the power cabinet; the box body is fixedly arranged at the top of the power cabinet; the transmission case is fixedly arranged on the inner wall of the top of the case body; the air inlet pipe is fixedly arranged on an air outlet of the exhaust fan, and one end of the air inlet pipe extends into the box body; the air outlet pipe is fixedly arranged on the inner wall of one side of the box body, which is far away from the air inlet pipe, and one end of the air outlet pipe extends to the inside of the power cabinet; the two filter cartridges are movably mounted at the top of the box body, and the bottom ends of the two filter cartridges extend into the box body; the two clamping grooves are formed in the outer wall of the corresponding filter cylinder and are symmetrically arranged relative to the transmission case; the rotating shaft is rotatably arranged at the top of the box body, and the bottom end of the rotating shaft extends into the transmission box; the first conical gear is fixedly sleeved at the bottom end of the rotating shaft; the two sleeves are rotatably arranged in the transmission case; the two second bevel gears are fixedly sleeved at one ends, close to each other, of the two sleeves respectively, and are meshed with the first bevel gear; the two telescopic rods are both installed in the corresponding sleeves in a threaded manner, and the ends, far away from each other, of the two telescopic rods extend into the corresponding clamping grooves; and the air outlet structures are arranged on the inner walls of two sides of the power cabinet.

Preferably, any one air-out mechanism all includes ventilation hole, two fixed blocks, two slide bars and end cap, the ventilation hole is seted up on one side inner wall of power cabinet, two the equal fixed mounting of fixed block is in on the inner wall in ventilation hole, two the fixed block symmetry sets up, two the equal slidable mounting of slide bar is corresponding on one side outer wall of fixed block, two the one end of slide bar all extends to outside the power cabinet, end cap fixed mounting is two the slide bar is located one of outer power cabinet is served, the end cap with one side outer wall of power cabinet contacts.

Preferably, a knob is fixedly mounted at the top end of the rotating shaft, a baffle is fixedly mounted at the top ends of the two filter cylinders, internal threads are formed on the inner walls of the two sleeves, external threads are formed on the outer walls of the two telescopic rods, and the two external threads are screwed with the corresponding internal threads.

Preferably, two fixing bases are fixedly mounted on the inner wall of the bottom of the transmission case, bearing holes are formed in the outer wall of one side of each fixing base, first bearings are fixedly sleeved on the outer walls of the sleeves, the outer walls of the first bearings are fixedly connected with the inner walls of the corresponding bearing holes, limiting rods are fixedly mounted on the outer walls of the two sides of the transmission case, supporting blocks are fixedly mounted on the two telescopic rods, and the two limiting rods penetrate through the corresponding supporting blocks and are in sliding connection with the corresponding supporting blocks.

Preferably, the sliding rods are all sleeved with first springs, one ends of the first springs are fixedly connected with the outer wall of one side of the fixing block, and the other ends of the first springs are fixedly connected with the outer wall of one side of the plug.

Preferably, a plurality of wire arranging mechanisms are fixedly mounted on the inner wall of the power cabinet, any one of the wire arranging mechanisms comprises a bottom plate, a pressing plate, a groove, a limiting post, a limiting groove, an adjusting hole, a fixing plate, a cross rod, a sliding plate and two contact blocks, the bottom plate is fixedly mounted on the inner wall of one side of the power cabinet, the pressing plate is rotatably mounted at the top of the bottom plate, the groove is formed in the top of the bottom plate, the limiting post is fixedly mounted at the bottom of the pressing plate, the limiting post extends into the groove, the limiting groove is formed in the outer wall of the limiting post, the adjusting hole is formed in the inner wall of one side of the groove, the fixing plate is fixedly mounted on the inner wall of the adjusting hole, the cross rod is slidably mounted on the outer wall of one side of the fixing plate, one end of the cross rod extends into the limiting groove, the slide rotates to be installed on the horizontal pole, the top and the bottom of slide all with the inner wall sliding connection of regulation hole, two the equal fixed mounting of conflict piece is in on the outer wall of horizontal pole, two conflict piece symmetry sets up.

Preferably, the cross rod is sleeved with a second spring, one end of the second spring is fixedly connected with the inner wall of one side of the adjusting hole, and the other end of the second spring is fixedly connected with the inner wall of one side of the sliding plate.

Preferably, a through hole is formed in the outer wall of one side of the sliding plate, a second bearing is fixedly sleeved on the cross rod, and the outer wall of the second bearing is fixedly connected with the inner wall of the through hole.

Two slides have been seted up to the symmetry on the inner wall of spacing groove, the top and the equal fixed mounting in bottom of slide have a slider, two the slider all with corresponding the inner wall sliding connection of slide.

One end of the cross rod, which is positioned outside the limiting groove, is fixedly provided with a hand-pulling block, and two through grooves are symmetrically formed in the fixed plate.

Compared with the prior art, the utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet has following beneficial effect:

the utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet, in the use, utilize two to strain the dust in the wind of section of thick bamboo with the suction and adsorb, make the wind that pours into in the power cabinet not mix the dust, avoid in the dust gets into the power cabinet, set up automatic closed end cap simultaneously, further prevent in the entering power cabinet of dust, when guaranteeing that the power cabinet is internal seal dustless, also effectual operation of dispelling the heat in to the power cabinet, with the temperature of low-tension electricity part, prevent that the electrical part from causing the damage because the high temperature, the life of improvement electrical part.

Drawings

Fig. 1 is a schematic structural diagram of a maintenance-free high-frequency switching power supply dc power supply cabinet according to a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of portion A shown in FIG. 1;

FIG. 3 is an enlarged schematic view of portion B shown in FIG. 2;

FIG. 4 is an enlarged schematic view of section C shown in FIG. 1;

fig. 5 is a schematic diagram of a maintenance-free high-frequency switching power supply dc power supply cabinet according to a second embodiment of the present invention;

FIG. 6 is an enlarged schematic view of portion D of FIG. 5;

FIG. 7 is a side cross-sectional view of the base plate of FIG. 5;

FIG. 8 is an enlarged schematic view of section E shown in FIG. 7;

fig. 9 is a schematic view of a test structure of the fixing plate shown in fig. 5.

Reference numbers in the figures: 1. a power supply cabinet; 2. an exhaust fan; 3. a box body; 4. a transmission case; 5. an air inlet pipe; 6. an air outlet pipe; 7. a filter cartridge; 8. a card slot; 9. a rotating shaft; 10. a first bevel gear; 11. a sleeve; 12. a second bevel gear; 13. a telescopic rod; 14. a vent hole; 15. a fixed block; 16. a slide bar; 17. a plug; 18. a base plate; 19. pressing a plate; 20. a groove; 21. a limiting column; 22. a limiting groove; 23. an adjustment hole; 24. a fixing plate; 25. a cross bar; 26. a slide plate; 27. a contact block; 28. a through groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

First embodiment

Referring to fig. 1 and fig. 4, in a first embodiment of the present invention, a maintenance-free high frequency switching power supply dc power cabinet includes: a power supply cabinet 1; the exhaust fan 2 is fixedly arranged at the top of the power cabinet 1; the box body 3 is fixedly arranged at the top of the power cabinet 1; the transmission case 4 is fixedly arranged on the inner wall of the top of the case body 3; the air inlet pipe 5 is fixedly arranged on an air outlet of the exhaust fan 2, and one end of the air inlet pipe 5 extends into the box body 3; the air outlet pipe 6 is fixedly arranged on the inner wall of one side, far away from the air inlet pipe 5, of the box body 3, and one end of the air outlet pipe 6 extends to the inside of the power cabinet 1; the two filter cartridges 7 are movably mounted at the top of the box body 3, and the bottom ends of the two filter cartridges 7 extend into the box body 3; the two clamping grooves 8 are formed in the outer wall of the corresponding filter cylinder 7, and the two clamping grooves 8 are symmetrically arranged relative to the transmission case 4; the rotating shaft 9 is rotatably installed at the top of the box body 3, and the bottom end of the rotating shaft 9 extends into the transmission case 4; the first bevel gear 10 is fixedly sleeved at the bottom end of the rotating shaft 9; the two sleeves 11 are rotatably arranged in the transmission case 4; two second bevel gears 12, wherein the two second bevel gears 12 are respectively fixedly sleeved on one ends of the two sleeves 11 close to each other, and both the two second bevel gears 12 are meshed with the first bevel gear 10; the two telescopic rods 13 are respectively installed in the corresponding sleeve 11 in a threaded manner, and the ends, away from each other, of the two telescopic rods 13 extend into the corresponding clamping grooves 8; and the air outlet structures are arranged on the inner walls of two sides of the power cabinet 1.

Any one air-out mechanism all includes ventilation hole 14, two fixed blocks 15, two slide bars 16 and end cap 17, ventilation hole 14 sets up on one side inner wall of power cabinet 1, two the equal fixed mounting of fixed block 15 is in on the inner wall of ventilation hole 14, two the 15 symmetry of fixed block sets up, two the equal slidable mounting of slide bar 16 is corresponding on one side outer wall of fixed block 15, two the one end of slide bar 16 all extends to outside power cabinet 1, end cap 17 fixed mounting is two slide bar 16 is located one outer serving of power cabinet 1, end cap 17 with one side outer wall of power cabinet 1 contacts.

The top end of the rotating shaft 9 is fixedly provided with a knob, the top ends of the two filter cylinders 7 are fixedly provided with baffle plates, the inner walls of the two sleeves 11 are provided with internal threads, the outer walls of the two telescopic rods 13 are provided with external threads, and the two external threads are screwed with the corresponding internal threads.

The fixed mounting has two fixing bases on the bottom inner wall of transmission case 4, has all seted up the dead eye on the outer wall of one side of two fixing bases, two all fixed cover is equipped with first bearing on the outer wall of sleeve 11, two the outer wall of first bearing all with corresponding the inner wall fixed connection of dead eye, equal fixed mounting has the gag lever post on the both sides outer wall of transmission case 4, two equal fixed mounting has the supporting shoe on telescopic link 13, two the gag lever post all runs through corresponding the supporting shoe and with corresponding supporting shoe sliding connection.

The two slide bars 16 are all sleeved with first springs, one ends of the two first springs are fixedly connected with the outer wall of one side of the fixed block 15, and the other ends of the two first springs are fixedly connected with the outer wall of one side of the plug 17.

In this embodiment:

the first step is as follows: when the power cabinet 1 is operated, the exhaust fan 2 is turned on, the exhaust fan 2 operates to draw air into the box body 3 through the air inlet pipe 5, when the sucked wind passes through the two filter cylinders 7, under the action of the two filter cylinders 7, some dust and impurities in the wind are adsorbed and finally blown into the power cabinet 1 through the air outlet pipe 6, thereby heat is scattered in the power cabinet 1, when the wind pressure in the power cabinet 1 is larger, the wind is gradually poured into the vent hole 14, then the plug 17 is extruded, when the wind pressure is larger than the pressure of the first spring, the wind power gradually drives the plug 17 to move transversely, so that the plug 17 is separated from the outer wall of the power cabinet 1, at the moment, wind blows into the power cabinet 1 from the gap of the plug 17, when the wind pressure is smaller, under the reset action of the first spring, the plug 17 moves reversely to be in contact with the outer wall of the power cabinet 1, so that dust is prevented from entering the power cabinet 1 through the vent hole 14.

The second step is that: after the fan used certain time, two were strained and are had a large amount of dusts to adhere to in the section of thick bamboo 7, make the adsorption effect who strains a section of thick bamboo 7 reduce, the effect of adsorbing the dust is influenced, it changes or washs to strain a section of thick bamboo 7 this moment, rotatory knob this moment, the knob rotates and drives pivot 9 and rotate, thereby drive first conical gear 10 and rotate, and under first conical gear 10 and two second conical gear 12's effect, when pivot 9 pivoted, two sleeves 11 rotate simultaneously, during two sleeves 11, two telescopic link 13 are under the limited effect of corresponding gag lever post, two telescopic link 13 can't rotate, thereby move in opposite directions, and then make two telescopic link 13 break away from in by corresponding draw-in groove 8, two telescopic link 13 lose the limited effect to corresponding section of thick bamboo 7 this moment, can strain two section of thick bamboo 7 and take out in the box 3 this moment.

Compared with the prior art, the utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet has following beneficial effect:

in the use, it adsorbs the dust in the wind of suction to utilize two to strain a section of thick bamboo 7, make the wind that pours into in the power cabinet 1 not mix the dust, avoid in the dust gets into the power cabinet 1, set up automatic closed end cap 17 simultaneously, further prevent in the entering power cabinet 1 of dust, when guaranteeing that power cabinet 1 is interior sealed dustless, also effectual operation of dispelling the heat in to the power cabinet 1, with the temperature of low electrical part, prevent that the electrical part from causing the damage because the high temperature, the life of improvement electrical part.

Second embodiment:

based on the maintenance-free high-frequency switching power supply direct-current power supply cabinet provided by the first embodiment of the application, the second embodiment of the application provides another maintenance-free high-frequency switching power supply direct-current power supply cabinet. The second embodiment is merely a preferred way of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

The second embodiment of the present invention will be further explained with reference to the drawings and the embodiments.

Referring to fig. 5-9, the maintenance-free high-frequency switching power supply dc power supply cabinet further includes a plurality of wire arranging mechanisms, the plurality of wire arranging mechanisms are all disposed on the inner wall of the power supply cabinet 1, any one of the wire arranging mechanisms includes a bottom plate 18, a pressing plate 19, a groove 20, a limiting post 21, a limiting groove 22, an adjusting hole 23, a fixing plate 24, a cross bar 25, a sliding plate 26 and two contact blocks 27, the bottom plate 18 is fixedly mounted on the inner wall of one side of the power supply cabinet 1, the pressing plate 19 is rotatably mounted on the top of the bottom plate 18, the groove 20 is disposed on the top of the bottom plate 18, the limiting post 21 is fixedly mounted at the bottom of the pressing plate 19, the limiting post 21 extends into the groove 20, the limiting groove 22 is disposed on the outer wall of the limiting post 21, the adjusting hole 23 is disposed on the inner wall of one side of the groove 20, the fixing plate 24 is fixedly mounted, slidable mounting has horizontal pole 25 on one side outer wall of fixed plate 24, the one end of horizontal pole 25 extends to in the spacing groove 22, the other end of horizontal pole 25 extends to outside the regulation hole 23, slide 26 rotates to be installed on the horizontal pole 25, slide 26's top and bottom all with the inner wall sliding connection of regulation hole 23, two the equal fixed mounting of conflict piece 27 is in on the outer wall of horizontal pole 25, two the symmetry of conflict piece 27 sets up.

A second spring is sleeved on the cross rod 25, one end of the second spring is fixedly connected with the inner wall of one side of the adjusting hole 23, and the other end of the second spring is fixedly connected with the inner wall of one side of the sliding plate 26.

A through hole is formed in the outer wall of one side of the sliding plate 26, a second bearing is fixedly sleeved on the cross rod 25, and the outer wall of the second bearing is fixedly connected with the inner wall of the through hole.

Two slide ways have been seted up to the symmetry on the inner wall of spacing groove 22, the equal fixed mounting in top and the bottom of slide 26 has the slider, two the slider all with corresponding the inner wall sliding connection of slide way.

A hand-pulling block is fixedly arranged at one end of the cross rod 25 outside the limiting groove 22, and two through grooves 28 are symmetrically formed in the fixing plate 24.

In this embodiment:

when a large number of connecting wires exist in the power cabinet 1, the hand-pulling block is rotated, when the two contact blocks 27 are just opposite to the corresponding through grooves 28, the transverse rod 25 is driven to transversely move under the reset action of the second spring, the transverse rod 25 transversely moves to drive the sliding plate 26 and the two contact blocks 27 to transversely move, so that the transverse rod 25 is separated from the limiting groove 22, the transverse rod 25 loses the limiting effect on the limiting column 21, the pressing plate 19 can be lifted up, the connecting wires are placed on the bottom plate 18, the pressing plate 19 is rotated after the transverse rod 25 is placed on the bottom plate 18, the pressing plate 19 is placed on the bottom plate 18, the limiting column 21 enters the groove 20 again, the hand-pulling block is pressed, the hand-pulling block is forced to reversely move to drive the transverse rod 25 to reversely move, after the transverse rod 25 completely enters the limiting groove 22, the two contact blocks 27 penetrate through the corresponding through grooves 28, the sliding plate 26 reversely moves to compress the second spring, make two conflict pieces 27 not just to two logical grooves 28, loosen the hand piece this moment, and promote slide 26 lateral shifting under the effect that resets of second spring, contradict two conflict pieces 27 on the outer wall of fixed plate 24, make horizontal pole 25 contradict all the time in spacing groove 22, keep the spacing effect to spacing post 21, comb the numerous and diverse connecting wire in power cabinet 1 through this mechanism, prevent that a large amount of connecting wires twine and influence the normal use of power cabinet 1 together, eliminate the potential safety hazard, it overhauls the maintenance to power cabinet 1 also to be convenient for simultaneously.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a non-maintaining high frequency switching power supply DC power supply cabinet which characterized in that includes:

a power supply cabinet;

the exhaust fan is fixedly arranged at the top of the power cabinet;

the box body is fixedly arranged at the top of the power cabinet;

the transmission case is fixedly arranged on the inner wall of the top of the case body;

the air inlet pipe is fixedly arranged on an air outlet of the exhaust fan, and one end of the air inlet pipe extends into the box body;

the air outlet pipe is fixedly arranged on the inner wall of one side of the box body, which is far away from the air inlet pipe, and one end of the air outlet pipe extends to the inside of the power cabinet;

the two filter cartridges are movably mounted at the top of the box body, and the bottom ends of the two filter cartridges extend into the box body;

the two clamping grooves are formed in the outer wall of the corresponding filter cylinder and are symmetrically arranged relative to the transmission case;

the rotating shaft is rotatably arranged at the top of the box body, and the bottom end of the rotating shaft extends into the transmission box;

the first conical gear is fixedly sleeved at the bottom end of the rotating shaft;

the two sleeves are rotatably arranged in the transmission case;

the two second bevel gears are fixedly sleeved at one ends, close to each other, of the two sleeves respectively, and are meshed with the first bevel gear;

the two telescopic rods are both installed in the corresponding sleeves in a threaded manner, and the ends, far away from each other, of the two telescopic rods extend into the corresponding clamping grooves;

and the air outlet structures are arranged on the inner walls of two sides of the power cabinet.

2. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 1, wherein any one of the air outlet mechanisms comprises a ventilation hole, two fixing blocks, two sliding rods and a plug, the ventilation hole is formed in one side inner wall of the power supply cabinet, the two fixing blocks are fixedly mounted on the inner wall of the ventilation hole, the two fixing blocks are symmetrically arranged, the two sliding rods are slidably mounted on the corresponding one side outer wall of the fixing block, one ends of the two sliding rods extend to the outside of the power supply cabinet, the plug is fixedly mounted on one end, located outside the power supply cabinet, of the two sliding rods, and the plug is in contact with the one side outer wall of the power supply cabinet.

3. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 1, wherein a knob is fixedly mounted at the top end of the rotating shaft, a baffle is fixedly mounted at the top end of each of the two filter cylinders, inner threads are formed on the inner walls of the two sleeves, outer threads are formed on the outer walls of the two telescopic rods, and the two outer threads are screwed with the corresponding inner threads.

4. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 1, wherein two fixing seats are fixedly mounted on an inner wall of the bottom of the transmission case, bearing holes are formed in outer walls of one side of the two fixing seats, first bearings are fixedly sleeved on outer walls of the two sleeves, outer walls of the two first bearings are fixedly connected with inner walls of the corresponding bearing holes, limiting rods are fixedly mounted on outer walls of two sides of the transmission case, supporting blocks are fixedly mounted on the two telescopic rods, and the two limiting rods penetrate through the corresponding supporting blocks and are in sliding connection with the corresponding supporting blocks.

5. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 2, wherein first springs are sleeved on the two sliding rods, one ends of the two first springs are fixedly connected with an outer wall of one side of the fixing block, and the other ends of the two first springs are fixedly connected with an outer wall of one side of the plug.

6. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 1, wherein a plurality of wire arranging mechanisms are fixedly mounted on the inner wall of the power supply cabinet, any one of the wire arranging mechanisms comprises a bottom plate, a pressing plate, a groove, a limiting post, a limiting groove, an adjusting hole, a fixing plate, a cross rod, a sliding plate and two contact blocks, the bottom plate is fixedly mounted on the inner wall of one side of the power supply cabinet, the pressing plate is rotatably mounted on the top of the bottom plate, the groove is formed in the top of the bottom plate, the limiting post is fixedly mounted at the bottom of the pressing plate, the limiting post extends into the groove, the limiting groove is formed in the outer wall of the limiting post, the adjusting hole is formed in the inner wall of one side of the groove, the fixing plate is fixedly mounted on the inner wall of the adjusting hole, the cross rod is slidably mounted on the outer wall of one side of, the other end of horizontal pole extends to outside the regulation hole, the slide rotates to be installed on the horizontal pole, the top and the bottom of slide all with the inner wall sliding connection of regulation hole, two the equal fixed mounting of conflict piece is in on the outer wall of horizontal pole, two conflict piece symmetry sets up.

7. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 6, wherein a second spring is sleeved on the cross rod, one end of the second spring is fixedly connected with the inner wall of one side of the adjusting hole, and the other end of the second spring is fixedly connected with the inner wall of one side of the sliding plate.

8. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 6, wherein a through hole is formed in an outer wall of one side of the sliding plate, a second bearing is fixedly sleeved on the cross rod, and an outer wall of the second bearing is fixedly connected with an inner wall of the through hole.

9. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 6, wherein two slide ways are symmetrically formed in the inner wall of the limiting groove, slide blocks are fixedly mounted at the top end and the bottom end of each slide plate, and the two slide blocks are connected with the corresponding inner walls of the slide ways in a sliding mode.

10. The maintenance-free high-frequency switching power supply direct-current power supply cabinet according to claim 6, wherein a hand-pulling block is fixedly mounted at one end of the cross bar outside the limiting groove, and two through grooves are symmetrically formed in the fixing plate.

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