CN214673776U

CN214673776U - Anti-seismic power overhaul power distribution box convenient for transition operation

Info

Publication number: CN214673776U
Application number: CN202120817821.XU
Authority: CN
Inventors: 施大伟; 朱鹏; 夏鹏程; 谢惠; 张鹏; 鲁伦; 胡明安; 顾明中; 徐建国; 陈永财
Original assignee: Yangzhong Power Supply Branch Of State Grid Jiangsu Electric Power Co ltd; State Grid Jiangsu Electric Power Co ltd Zhenjiang Power Supply Branch
Current assignee: Yangzhong Power Supply Branch Of State Grid Jiangsu Electric Power Co ltd; State Grid Jiangsu Electric Power Co ltd Zhenjiang Power Supply Branch
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-11-09
Anticipated expiration: 2031-04-21

Abstract

The utility model provides an anti-seismic power overhaul power distribution box convenient for transition operation, which structurally comprises a main box body (7), a damping spring shock absorber (1), a trolley platform (9), a pulley (3) and a push-pull rod (4); the pulley (3) is arranged below the trolley platform (9), the main box body (7) is arranged above the trolley platform (9), the damping spring shock absorber (1) is arranged between the main box body (7) and the trolley platform (9), and one side of the trolley platform (9) is provided with the push-pull rod (4). Has the advantages that: the utility model can be transported by only one person, which can effectively avoid the waste of human resources; when the hollow road surface is hauled, the damping spring shock absorber has the antidetonation function, has avoided the incasement electrical components and parts vibrations of main tank body and the not hard up of fastener.

Description

Anti-seismic power overhaul power distribution box convenient for transition operation

Technical Field

The utility model relates to an electric power maintenance power distribution box of operation of being convenient for transition of antidetonation type belongs to power equipment technical field.

Background

In the construction of electric power engineering at present, a construction power supply mainly gets electricity from an electric control screen used in a control room; if the electric loads in the engineering are more, such as loads of an electric welding machine, a cutting machine, a copper bar punching machine, a concrete mixer and the like, the load power of the electric equipment is larger, and the electric welding machine, the cutting machine, the copper bar punching machine, the concrete mixer and the like are sometimes required to be used for simultaneously using electricity, if the electric equipment is connected to a used electricity control screen, the power supply circuit of the electric equipment is longer, so that the voltage drop difference is caused, the starting delay of the construction equipment is caused, the running performance of the equipment is influenced, the circuit is complicated and disordered, and the artificial mistaken touch and disconnection of the construction power supply is caused; therefore, the power distribution box for electric power overhaul is common equipment in electric power engineering construction, and mainly plays a role in shunting a circuit.

A common electric power maintenance power distribution box (hereinafter referred to as a power box) is mainly carried by manpower during transition or the power box is placed on a freight trolley to be pushed, but the power box has the following defects:

1. because the power distribution box is generally large in size, a plurality of people are required to carry the power distribution box by manpower, and a large amount of manpower and time are wasted;

2. when the freight trolley is used for pushing, the direction of the trolley is difficult to control, and the power box is easy to slide or topple over when being placed on the trolley, so that the trolley needs to be carried by two persons (one person pushes the power box and holds the power box by one person);

3. in the transportation process of the cart, the road surface of a construction site is difficult to avoid pothole and bumpy, so that the vibration of electrical components in the power box and the loosening of fasteners are easily caused, poor contact and heating even fire are caused during electrification;

4. construction site has domatic inevitable, and current headstock should not put down on domatic, takes place easily to turn on one's side, has construction potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric power that antidetonation type is convenient for operation of shifting overhauls power distribution box, its purpose aims at solving the problem that current electric power overhauls power distribution box is not convenient for the transportation of shifting when the operation of shifting.

The technical solution of the utility model is as follows: an anti-seismic power overhaul power distribution box convenient for transition operation structurally comprises a main box body 7, a damping spring shock absorber 1, a trolley platform 9, a pulley 3 and a push-pull rod 4; the pulley 3 is arranged below the trolley platform 9, the main box body 7 is arranged above the trolley platform 9, the damping spring shock absorber 1 is arranged between the main box body 7 and the trolley platform 9, and the push-pull rod 4 is arranged on one side of the trolley platform 9.

The utility model has the advantages that:

1) the utility model discloses a power overhaul power distribution box only needs one person when transporting, can effectively avoid the waste of manpower resources;

2) through further design of the pulleys, the pulleys can rotate 360 degrees during transportation, and the whole power distribution box for electric power overhaul can be pushed or pulled, so that turning at any angle can be conveniently realized; when the electric power overhaul power distribution box works on a slope surface, the pulleys have a braking function, the electric power overhaul power distribution box is prevented from freely sliding, the balance of the main box body can be kept through adjusting the upper adjusting nut and the lower adjusting nut of the damping spring shock absorber, the levelness of the main box body can be properly adjusted, and the side turning of the main box body is avoided;

3) when the main box body is hauled on a hollow road surface, the damping spring shock absorber has an anti-vibration function, so that the vibration of electrical components in the main box body and the loosening of fasteners are avoided;

4) the utility model discloses electric power overhauls power distribution box's transportation mode can also can haul in order to push away the fortune, and further design through to the pulley can also turn by arbitrary angle, has solved the drawback that the freight transportation dolly direction is difficult to control.

Drawings

Fig. 1 is a schematic view of the whole external front view structure of the present invention.

Fig. 2 is a schematic bottom plan view of the present invention.

Fig. 3 is a schematic structural diagram of the middle pulley of the present invention.

Fig. 4 is a schematic structural view of the middle damping spring shock absorber of the present invention.

In the attached drawing, the damping spring shock absorber is 1, the brake pad is 2, the pulley is 3, the push-pull rod is 4, the buckle is 5, the grounding braided copper strip is 6, the main box body is 7, the main box body base is 8, the trolley platform is 9, the cable hole is 10, the bottom tray is 11, the upper tray is 12, the thickened bottom plate is 31, the bearing is 32, the pulley bracket is 33, the brake pedal is 34, the light spring is 35, the roller is 36, the bolt is 37, the fixing bolt is S1, the upper adjusting nut is S2, the lower adjusting nut is S3, the upper supporting cover is 41, the lower supporting cover is 42, and the supporting spring is 43.

Detailed Description

An anti-seismic power overhaul power distribution box convenient for transition operation structurally comprises a main box body 7, a damping spring shock absorber 1, a trolley platform 9, a pulley 3 and a push-pull rod 4; the pulley 3 is arranged below the trolley platform 9, the main box body 7 is arranged above the trolley platform 9, the damping spring shock absorber 1 is arranged between the main box body 7 and the trolley platform 9, and the push-pull rod 4 is arranged on one side of the trolley platform 9.

The anti-seismic power overhaul power distribution box convenient for transition operation structurally further comprises a grounding braided copper strip 6, wherein the grounding braided copper strip 6 is connected with the bottom of the main box body 7; preferably, the bottom of the main box body 7 is fixedly connected with one end of the grounding braided copper strip 6, and the other end of the grounding braided copper strip 6 is contacted with the ground; the grounding braided copper strip 6 is used for grounding the box body shell of the main box body 7, and personnel electric shock accidents caused by induced voltage and circuit electric leakage are prevented.

Further preferably, a main box base 8 is fixed at the bottom of the main box 7, a grounding hole is formed in the main box base 8, one end of the grounding braided copper strip 6 is fixed in the grounding hole in the main box base 8 through a bolt, and the other end of the grounding braided copper strip 6 is in contact with the ground; the distance between the grounding hole on the main box body base 8 and the pulley 3 is greater than the length of the grounding braided copper strip 6, and the distance between the grounding hole on the main box body base 8 and the ground is less than the length of the grounding braided copper strip 6, so that the rolling of the pulley 3 is not influenced when the grounding braided copper strip 6 enables the box body shell of the main box body 7 to be grounded.

Four corners of the bottom of the main box body 7 are connected with the trolley platform 9 through damping spring shock absorbers 1; when the bottom of the main box body 7 is fixed with a main box body base 8, the four corners of the main box body base 8 are connected with a trolley platform 9 through damping spring shock absorbers 1, and the damping spring shock absorbers 1 are mainly used for preventing poor circuit contact caused by looseness of electric components inside the main box body 7 due to vibration when the power distribution box is hauled on a bumpy construction road surface for electric power maintenance.

The pulleys 3 are four preferred steering pulleys, and the four steering pulleys are respectively arranged at four corners of the lower bottom surface of the trolley platform 9; the preferred 360 degrees rotatory pulleys of diverting pulley, 360 degrees rotatory pulleys conveniently realize 360 degrees arbitrary angle rotations.

The 360-degree rotating pulley comprises a brake pad 2, a thickened base plate 31, a bearing 32, a pulley bracket 33, a brake pedal 34, a light spring 35, a roller 36 and a bolt 37; the lower side of the thickening bottom plate 31 is fixedly connected with the outer ring of the bearing 32, the inner ring of the bearing 32 is fixedly connected with the pulley bracket 33, the brake pedal 34, the brake pad 2 and the pulley bracket 33 are preferably hinged, the brake pad 2 is positioned between the brake pedal 34 and the roller 36, one end of the light spring 35 is connected with the pulley bracket 33, the other end of the light spring 35 is connected with the brake pad 2, the light spring 35 is positioned on one side of the brake pad 2 departing from the roller 36, the roller 36 is connected with the pulley bracket 33 through a bolt 37, and the upper side of the thickening bottom plate 31 is fixedly connected with the lower bottom surface of the trolley platform 9.

The four corners of the lower bottom surface of the trolley platform 9 are respectively provided with a bottom tray 11, a 360-degree rotating pulley is correspondingly arranged below each bottom tray 11, and each 360-degree rotating pulley is arranged at the four corners of the lower bottom surface of the trolley platform 9 through the corresponding bottom tray 11; preferably, the bottom tray 11 is welded with the framework of the trolley platform 9; when the bottom tray 11 is fixed on the lower bottom surface of the trolley platform 9, the upper side of the thickened bottom plate 31 is fixedly connected with the bottom tray 11 on the lower bottom surface of the trolley platform 9; when the brake pedal 34 is stepped down by a foot, the brake pads 2 are in close contact with the rollers 36 to play a braking role, when the brake pedal 34 is lifted up, the light springs 35 contract to enable the brake pads 2 to rotate upwards to release braking, and the brake pads 2 facilitate braking on the 360-degree rotating pulley; preferably, the tread of the roller 36 has a non-slip pattern, and the texture of the tread of the roller 36 is preferably polyurethane; further preferably, the bearing 32 is a double-sided ball bearing, and can rotate 360 degrees to turn at any angle; further preferably, the lower side of the thickened base plate 31 is firmly connected with the outer ring of the bearing 32 by welding, and the inner ring of the bearing 32 is firmly welded with the pulley bracket 33 by bolts; preferably, the thickened base plate 31 of each 360 degree rotating pulley is equidistant from the center of the cart platform 9 between the two vertical edges adjacent to the respective 360 degree rotating pulley.

One end of the push-pull rod 4 is connected with the center of one side of the trolley platform 9, the push-pull rod 4 can rotate up and down around the trolley platform 9, one side of the main box body 7 facing the push-pull rod 4 is welded with a bayonet 5, and the size of the bayonet 5 is matched with the diameter of the push-pull rod 4; preferably, one end of the push-pull rod 4 is hinged with the center of one side of the trolley platform 9, and when the push-pull rod 4 is located at a vertical position, the push-pull rod 4 is in close contact with the bayonet 5 welded on the main box body, so that the push-pull rod 4 is conveniently clamped on the bayonet 5, the push-pull rod 4 is conveniently placed, and the space is saved; the push-pull rod 4 is preferably a telescopic push-pull rod which can be stretched and can rotate up and down; the bayonet 5 is preferably made of semicircular stainless steel, the diameter of the semicircular bayonet 5 is equal to that of the main rod of the telescopic push-pull rod, and the bayonet 5 is welded at a proper position of the main box body 7 to ensure that the telescopic push-pull rod can be tightly contacted with the bayonet 5 when the telescopic push-pull rod is in a vertical position; the trolley platform 9 is rectangular as a whole, the push-pull rod 4 is one, one end of the push-pull rod 4 is installed on one side of one wide side of the trolley platform 9, and the distance from the position where the push-pull rod 4 is connected with the trolley platform 9 to a pair of long sides of the trolley platform 9 is equal.

The damping spring shock absorber 1 comprises a fixing bolt S1, an upper adjusting nut S2, a lower adjusting nut S3, an upper supporting cover 41, a lower supporting cover 42 and a supporting spring 43; wherein, the upper support cover 41 is fixedly connected with the upper end of the supporting spring 43, the lower support cover 42 is fixedly connected with the lower end of the supporting spring 43, the upper end of the fixing bolt S1 passes through the upper support cover 41, the lower end of the fixing bolt S1 passes through the lower support cover 42, the fixing bolt S1 is provided with an upper adjusting nut S2 and a lower adjusting nut S3, the upper adjusting nut S2 is positioned above the upper support cover 41, and the lower adjusting nut S3 is positioned below the lower support cover 42; the bottom of the main box body 7 is provided with an upper bolt hole, the upper end of a fixing bolt S1 passes through the upper bolt hole, the diameter of the upper bolt hole is smaller than the whole size of an upper adjusting nut S2 and the whole size of the upper support cover 41, and the position of the upper bolt hole at the bottom of the main box body 7 is clamped between the upper adjusting nut S2 and the upper support cover 41; when the main box body base 8 is arranged at the bottom of the main box body 7, an upper bolt hole is formed in the main box body base 8, the position of the upper bolt hole of the main box body base 8 is clamped between an upper adjusting nut S2 and the upper supporting cover 41, the upper bolt hole is preferably formed in the lower side of the framework of the main box body base 8, and the framework of the main box body base 8 is preferably fixedly connected with the upper supporting cover 41 through bolts; the trolley platform 9 is provided with a lower bolt hole, the lower end of the fixing bolt S1 penetrates through the lower bolt hole, the diameter of the lower bolt hole is smaller than the overall size of the lower adjusting nut S3 and smaller than the overall size of the lower support cover 42, and the position of the lower bolt hole on the trolley platform 9 is clamped between the lower adjusting nut S3 and the lower support cover 42; preferably, the fixing bolt S1 is perpendicular to both the bottom of the main box 7 and the upper surface of the trolley platform 9; when the main box body 7 inclines, the height of the main box body 7 corresponding to the foot can be lowered by screwing the upper adjusting nut S2 downwards, and the height of the main box body 7 corresponding to the foot can be raised by screwing the lower adjusting nut S3 downwards or screwing the upper adjusting nut S2 upwards, so that the effect of adjusting and keeping the main box body 7 horizontal is achieved; meanwhile, the damping spring shock absorber 1 has an anti-seismic property due to the supporting spring 43.

An upper tray 12 is fixed at each of four corners of the upper surface of the trolley platform 9, four damping spring shock absorbers 1 are arranged, and the four damping spring shock absorbers 1 are respectively arranged on the upper tray 12 corresponding to the upper surface of the trolley platform 9; preferably, the trolley platform 9 is rectangular as a whole, and the distance from each damping spring shock absorber 1 to two adjacent vertical edges of the trolley platform 9 and the corresponding damping spring shock absorber 1 is equal; when the trolley platform 9 has the upper tray 12, the lower bolt holes are opened on the upper tray 12, and the upper tray 12 and the lower tray cover 42 are fixedly connected preferably by bolts.

The external thread of the fixing bolt S1 is matched with the internal thread of the upper adjusting nut S2 and the internal thread of the lower adjusting nut S3.

The middle part of the trolley platform 9 is naked, and the bottom of the main box body 7 is provided with a cable hole 10; when the bottom of the main box body 7 is provided with a main box body base 8, the main box body base 8 is also provided with a cable hole 10; the position of the cable hole 10 corresponds to the position of the middle naked part of the trolley platform 9, so that an external power line can conveniently penetrate through the power line of the cable hole 10 to be connected with related power devices in the main box body 7.

Examples

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1, the anti-seismic power overhaul power distribution box convenient for transition operation structurally comprises a main box body 7, a damping spring shock absorber 1, a trolley platform 9, a 360-degree rotating pulley, a telescopic push-pull rod and a grounding braided copper strip 6; four corners of a main box body base 8 of the main box body 7 are connected with the trolley platform 9 through damping spring shock absorbers 1, the damping spring shock absorbers 1 are fixedly connected with the trolley platform 9 and the main box body 7 through bolts, the damping spring shock absorbers 1 are four in number and can bear the weight of more than 200kG, and the damping spring shock absorbers 1 mainly play a role in preventing poor circuit contact caused by looseness of components inside the main box body 7 due to vibration when the power box is hauled on a bumpy construction road surface; four corners of the lower bottom of the trolley platform 9 are provided with four 360-degree rotating pulleys, the 360-degree rotating pulleys can rotate at any angle of 360 degrees, the whole power overhaul power distribution box can be pushed or pulled and can also turn at any angle, when the trolley platform works on a slope surface, a brake block 2 of the 360-degree rotating pulleys can be stepped down to park the whole power overhaul power distribution box on the slope surface with a certain angle, a main box body 7 of the whole power overhaul power distribution box is slightly inclined, and an upper adjusting nut S2 or a lower adjusting nut S3 on the damping spring shock absorber 1 can be adjusted to keep the main box body 7 balanced; a telescopic push-pull rod is arranged at the center of the wide side of the trolley platform 9, and mounting holes of the telescopic push-pull rod are arranged at equal intervals from a pair of long edges of the trolley platform 9 and are fastened by bolts; the telescopic push-pull rod can stretch and rotate up and down, and is in close contact with a bayonet 5 welded on the main box body 7 at a vertical position, the bayonet 5 is made of semicircular stainless steel, the diameter of the bayonet 5 is equal to that of a main rod of the telescopic push-pull rod, and the bayonet 5 is welded at a proper position of the main box body 7, so that the bayonet 5 is ensured to be in close contact with the bayonet 5 at the vertical position of the telescopic push-pull rod, and the telescopic push-pull rod is prevented from interfering with the operation of other constructors after falling to the ground; as shown in fig. 2, four triangular steel bottom trays 11 are welded at the bottom of the framework of the trolley platform 9, the bottom trays 11 have certain strength and can bear the weight of more than 200kG, 360-degree rotating pulleys are fixed on the bottom trays 11 by bolts, and the vertical distances from the centers of thickened bottom plates (as shown in fig. 3) of the 360-degree rotating pulleys to the adjacent length and width of the trolley platform 9 are arranged at equal intervals; four triangular steel upper trays 12 are welded on the upper part of a framework of the trolley platform 9, the upper trays 12 are the same as the bottom tray 11, four damping spring shock absorbers 1 are respectively arranged on the four trays on the upper part of the trolley platform 9, and the damping spring shock absorbers 1 and two adjacent vertical edges of the trolley platform 9 are arranged at equal intervals; a cable hole 10 with the diameter of 10 cm is formed in the middle of the bottom surface of a main box base 8 of the main box 7 (as shown in figure 2) to the right for penetrating a power supply line, the middle part of a trolley platform 9 is naked, and the cable hole seen in figure 2 is formed in the main box base 8 of the main box 7; at the proper position on the side surface of the main box body base 8, which does not influence the rolling of the 360-degree rotating pulley, the grounding braided copper strip 6 is fixed on the main box body base 8 by bolts and is used for grounding the shell of the main box body 7 to prevent induced voltage or electric leakage of a circuit from electric shock and hurting people.

The anti-seismic power overhaul power distribution box convenient for transition operation in the embodiment can be transported by only one person, so that a large amount of labor and time are saved; during transportation, the 360-degree rotating pulley can rotate by 360 degrees, and can be pushed or pulled to turn at any angle; when the construction road surface of the hollow is hauled, the damping spring shock absorber 1 has an anti-vibration function, so that the vibration of electric components in the main box body 7 and the loosening of fasteners are avoided; when the device works on a slope surface, the 360-degree rotating pulley has a braking function, the power box is prevented from sliding freely, the box body balance of the main box body 7 can be kept through adjusting the upper adjusting nut S2 and the lower adjusting nut S3 of the damping spring shock absorber 1, and the side turning of the main box body 7 is avoided.

Claims

1. An anti-seismic power overhaul power distribution box convenient for transition operation is characterized by comprising a main box body (7), a damping spring shock absorber (1), a trolley platform (9), a pulley (3) and a push-pull rod (4); the damping spring shock absorber comprises a pulley (3), a main box body (7), a damping spring shock absorber (1), a trolley platform (9), a push-pull rod (4), a damping spring shock absorber and a damping spring, wherein the pulley (3) is arranged below the trolley platform (9), the main box body (7) is arranged above the trolley platform (9), and the damping spring shock absorber is arranged between the main box body (7) and the trolley platform (9);

the damping spring shock absorber (1) comprises a fixing bolt (S1), an upper adjusting nut (S2), a lower adjusting nut (S3), an upper supporting cover (41), a lower supporting cover (42) and a supporting spring (43); the upper support cover (41) is fixedly connected with the upper end of a supporting spring (43), the lower support cover (42) is fixedly connected with the lower end of the supporting spring (43), the upper end of a fixing bolt (S1) penetrates through the upper support cover (41), the lower end of the fixing bolt (S1) penetrates through the lower support cover (42), an upper adjusting nut (S2) and a lower adjusting nut (S3) are arranged on the fixing bolt (S1), the upper adjusting nut (S2) is located above the upper support cover (41), and the lower adjusting nut (S3) is located below the lower support cover (42); the bottom of the main box body (7) is provided with an upper bolt hole, the upper end of a fixing bolt (S1) penetrates through the upper bolt hole, the diameter of the upper bolt hole is smaller than the whole size of an upper adjusting nut (S2) and also smaller than the whole size of the upper support cover (41), and the position of the upper bolt hole at the bottom of the main box body (7) is clamped between the upper adjusting nut (S2) and the upper support cover (41); the trolley platform (9) is provided with a lower bolt hole, the lower end of a fixing bolt (S1) penetrates through the lower bolt hole, the diameter of the lower bolt hole is smaller than the overall size of the lower adjusting nut (S3) and smaller than the overall size of the lower support cover (42), and the position of the lower bolt hole in the trolley platform (9) is clamped between the lower adjusting nut (S3) and the lower support cover (42).

2. The anti-seismic power overhaul power distribution box convenient for transition operation according to claim 1, characterized by further comprising a grounding braided copper strip (6), wherein the bottom of the main box body (7) is fixedly connected with one end of the grounding braided copper strip (6), and the other end of the grounding braided copper strip (6) is in contact with the ground.

3. The anti-seismic power overhaul power distribution box convenient for transition operation as claimed in claim 2, wherein a main box base (8) is fixed at the bottom of the main box (7), a grounding hole is formed in the main box base (8), and one end of the grounding braided copper strip (6) is fixed in the grounding hole in the main box base (8) through a bolt; the distance between the grounding hole on the main box body base (8) and the pulley (3) is greater than the length of the grounding braided copper strip (6), and the distance between the grounding hole on the main box body base (8) and the ground is less than the length of the grounding braided copper strip (6); four corners of the main box body base (8) are connected with the trolley platform (9) through damping spring shock absorbers (1).

4. The shock-resistant power distribution box convenient for electric power overhaul according to claim 1, 2 or 3, wherein the pulleys (3) are four diverting pulleys, and the four diverting pulleys are respectively arranged at four corners of the lower bottom surface of the trolley platform (9).

5. The anti-seismic power overhaul power distribution box convenient for transition operation of claim 4, wherein the diverting pulleys are 360-degree rotating pulleys; the 360-degree rotating pulley comprises a brake block (2), a thickened base plate (31), a bearing (32), a pulley bracket (33), a brake pedal (34), a light spring (35), a roller (36) and a bolt (37); the downside and bearing (32) outer lane fixed connection of thickening bottom plate (31), bearing (32) inner circle and pulley support (33) fixed connection, it is articulated between brake pedal (34) and brake braking piece (2) and pulley support (33), brake braking piece (2) are located between brake pedal (34) and gyro wheel (36), the one end and pulley support (33) of light spring (35) are connected, the other end and the brake braking piece (2) of light spring (35) are connected, light spring (35) are located one side that brake braking piece (2) deviate from gyro wheel (36), gyro wheel (36) are connected through bolt (37) with pulley support (33), the upside and the lower bottom surface fixed connection of dolly platform (9) of thickening bottom plate (31).

6. The shock-resistant power distribution box convenient for electric power overhaul according to claim 5, wherein the four corners of the lower bottom surface of the trolley platform (9) are respectively provided with a bottom tray (11), a 360-degree rotating pulley is correspondingly arranged below each bottom tray (11), and each 360-degree rotating pulley is arranged at the four corners of the lower bottom surface of the trolley platform (9) through the corresponding bottom tray (11); the upper side of the thickened bottom plate (31) is fixedly connected with a bottom tray (11) on the lower bottom surface of the trolley platform (9).

7. The power distribution box of claim 5, wherein the tread of the roller (36) has anti-skid lines; the bearing (32) is a double-sided ball bearing.

8. The shock-resistant power distribution box convenient for electric power overhaul according to claim 1, 2 or 3, and is characterized in that one end of the push-pull rod (4) is connected with the center of one side of the trolley platform (9), the push-pull rod (4) can rotate up and down around the trolley platform (9), one side of the main box body (7) facing the push-pull rod (4) is welded with a bayonet (5), and the size of the bayonet (5) is matched with the diameter of the push-pull rod (4).

9. The shock-resistant power distribution box convenient for electric power overhaul according to claim 1, wherein four corners of the upper surface of the trolley platform (9) are respectively fixed with an upper tray (12), four damping spring shock absorbers (1) are provided, and the four damping spring shock absorbers (1) are respectively arranged on the upper tray (12) corresponding to the upper surface of the trolley platform (9); the lower bolt holes are formed in the upper tray (12), and the upper tray (12) is fixedly connected with the lower tray cover (42) through bolts; a main box body base (8) is fixed at the bottom of the main box body (7), an upper bolt hole is formed in the main box body base (8), and the position of the upper bolt hole of the main box body base (8) is clamped between an upper adjusting nut (S2) and an upper supporting cover (41); the middle part of the trolley platform (9) is exposed, a cable hole (10) is formed in the bottom of the main box body (7), and the position of the cable hole (10) corresponds to the position of the middle exposed part of the trolley platform (9).