CN117325894A - Centralized power platform maintenance trolley - Google Patents

Abstract

The invention relates to the technical field of railway maintenance, and discloses a maintenance trolley for a centralized power platform, which comprises the following components: the cargo bucket assembly comprises a chassis; the beam assembly is detachably arranged at the front end and the rear end of the chassis, and a coupler is arranged on the outer end face of the beam assembly; the driving wheel assembly can move along the rail and is detachably arranged at the left end and the right end of the beam assembly; the battery pack is detachably arranged on the chassis and comprises a battery box provided with a power interface, an energy storage battery and an auxiliary inverter are arranged in the battery box, an inlet of the energy storage battery is connected with the power interface, and an outlet of the energy storage battery is connected with the auxiliary inverter. The maintenance trolley with the centralized power platform can move along the rails, is high in maintenance efficiency, is provided with the battery pack for intensively supplying energy to the small mechanical equipment, does not need to prepare a plurality of sets of standby equipment, reduces maintenance cost, and is simple in installation structure, convenient to assemble and disassemble and high in universality.

Description

A centralized power platform maintenance trolley

Technical field

The present invention relates to the technical field of railway maintenance, and more specifically, to a centralized power platform maintenance trolley.

Background technique

Fragmented maintenance of railway lines has the characteristics of scattered working locations, remote environment, high labor intensity, and urgent time. At present, scattered maintenance mostly requires maintenance personnel to carry small mechanical equipment for manual repair. The construction site requires personnel to frequently transport small mechanical equipment, and small machinery The equipment has a short battery life, and the long on-site construction time requires multiple sets of small mechanical equipment to be prepared for backup, and the number of maintenance personnel is increased, resulting in high maintenance costs.

To sum up, how to reduce maintenance costs and improve maintenance efficiency is an urgent problem that needs to be solved by those skilled in the art.

Contents of the invention

In view of this, the purpose of the present invention is to provide a centralized power platform maintenance trolley that can move along the rails, has high maintenance efficiency, and is equipped with a battery pack that centrally supplies energy to small mechanical equipment. There is no need to prepare multiple sets of backup equipment and reduces the cost. Maintenance costs are low, and the installation structure is simple, easy to disassemble and assemble, and has strong versatility.

In order to achieve the above objects, the present invention provides the following technical solutions:

A centralized power platform maintenance trolley, including:

Cargo bucket assembly, including chassis;

A crossbeam assembly is detachably provided at the front and rear ends of the chassis, and a coupler is provided on the outer end surface of the crossbeam assembly;

A driving wheel assembly that can move along the rail is detachably provided at the left and right ends of the crossbeam assembly;

The battery pack is detachably installed on the chassis and includes a battery box with a power interface. The battery box is equipped with an energy storage battery and an auxiliary inverter. The entrance of the energy storage battery is connected to the power interface. connection, the outlet of the energy storage battery is connected to the auxiliary inverter.

Preferably, the chassis includes at least one bottom plate and a U-shaped connecting pipe connecting two adjacent bottom plates, and the vertical connecting pipes at both ends of the U-shaped connecting pipe are inserted into the connecting holes of the bottom plate.

Preferably, the outer edge of the chassis is provided with a detachable guardrail assembly, the bottom of the guardrail assembly is inserted into the mounting hole of the base plate, and the bottom of the guardrail assembly is provided with a quick-release lock.

Preferably, the size of the connecting hole and the size of the mounting hole are the same.

Preferably, the driving wheel assembly includes a driving wheel and a wheel fork seat provided with a stop. The driving wheel is hingedly installed in the wheel fork seat, and the wheel fork seat is snap-fastened to the beam assembly. inside the limit slot.

Preferably, the lock fork passes through the connection hole of the chassis and the connection hole of the cross beam assembly in sequence, a self-locking latch is provided between the cross beam assembly and the lock fork, and the self-locking latch is connected to the The lock forks are not parallel.

Preferably, the lock fork includes a lock fork plate and at least one lock fork pin, the lock fork pin is vertically provided on the lock fork plate, and the outer circumference of the lock fork pin is provided with a through-limiting hole.

Preferably, the self-locking bolt includes a lock pin, a lock tongue and a lock shaft that hingesly connects the lock pin and the lock tongue. An end of the lock pin that is relatively far away from the lock shaft is covered with a spring, and the spring One end is connected to the mounting plate at the end of the lock pin, and the other end is in contact with the side wall surface of the cross beam assembly.

When the centralized power platform maintenance trolley provided by the present invention is used, first connect and fix the cargo hopper assembly and the cross beam assembly, the cross beam assembly and the drive wheel assembly, and install the battery pack on the chassis to complete the centralized power platform maintenance trolley. Assembling; then, place the small mechanical equipment required for on-site construction on the chassis, and drive the centralized power platform maintenance trolley to move along the rails to the location to be repaired; use small mechanical equipment for repair and maintenance, and small mechanical equipment can be connected when the battery life is difficult The auxiliary inverter centrally supplies energy to each device through the battery pack.

Among them, the cargo hopper assembly, cross beam assembly, drive wheel assembly and battery pack are all detachably connected. The installation structure is simple, easy to disassemble and assemble, has strong versatility, and saves space during storage;

The drive wheel assembly can move along the rail, adapting to on-site maintenance needs and realizing convenient transportation of small mechanical equipment. Compared with manual handling of small mechanical equipment, it reduces manual labor intensity and improves maintenance efficiency;

The battery pack contains energy storage cells, which can centrally supply energy to small mechanical equipment. It can greatly improve the battery life of each small mechanical equipment, effectively reduce the number of spare equipment, and reduce maintenance personnel and equipment costs.

In addition, the centralized power platform maintenance trolley can be connected to multiple vehicles through the front and rear couplers, making it easy to use.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a specific embodiment of a centralized power platform maintenance trolley provided by the present invention;

Figure 2 is a schematic structural diagram of the chassis;

Figure 3 is a schematic structural diagram of the guardrail assembly;

Figure 4 is a schematic structural diagram of the beam assembly;

Figure 5 is a schematic structural diagram of the beam assembly in another direction;

Figure 6 is a schematic structural diagram of the driving wheel assembly;

Figure 7 is a schematic structural diagram of the battery pack;

Figure 8 is a schematic structural diagram of the lock fork;

Figure 9 is a schematic structural diagram of the self-locking latch in the locked state;

Figure 10 is a schematic structural diagram of the self-locking latch in the unlocked state;

Figure 11 is a schematic diagram of the assembly of the chassis and cross member assembly;

Figure 12 is a schematic structural diagram of the centralized power platform maintenance trolley being connected;

Figure 13 is a schematic diagram of the storage of centralized power platform maintenance trolleys.

In Figure 1-Figure 13:

01 is the self-locking pin, 02 is the connecting plate, 03 is the lighting module, 04 is the hydraulic pump station module, 05 is the air compressor module, and 06 is the construction tool;

10 is the chassis, 11 is the bottom plate, 111 is the connecting hole, and 12 is the U-shaped connecting pipe;

20 is the guardrail component, 21 is the U-shaped pipe, 22 is the straight pipe, and 23 is the quick release lock;

30 is the cross beam assembly, 31 is the box beam, 311 is the connecting hole, 312 is the cross beam lock hole, 32 is the driving wheel mounting seat, 321 is the limit slot, 322 is the locking hole, 33 is the coupler, and 331 is the connecting pin hole. ;

40 is the driving wheel assembly, 41 is the wheel fork seat, 411 is the stop, and 42 is the driving wheel;

50 is the battery pack, 51 is the battery box, 511 is the leg, 512 is the power interface, 513 is the lid, 514 is the partition, 515 is the handle, 52 is the energy storage battery, 53 is the auxiliary inverter, and 54 is the vehicle. controller;

6 is the lock fork, 61 is the lock fork plate, 62 is the lock fork pin, and 621 is the limit hole;

7 is the self-locking bolt, 71 is the lock pin, 72 is the lock tongue, 73 is the lock shaft, 74 is the spring, and 75 is the washer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The core of the invention is to provide a centralized power platform maintenance trolley, which can move along the railway track, has high maintenance efficiency, and is equipped with a battery pack that centrally supplies energy to small mechanical equipment. There is no need to prepare multiple sets of standby equipment, which reduces maintenance costs, and The installation structure is simple, easy to disassemble and assemble, and has strong versatility.

The centralized power platform maintenance trolley provided by the invention includes:

Cargo bucket assembly, including chassis 10;

The crossbeam assembly 30 is detachably located at the front and rear ends of the chassis 10, and the outer end surface of the crossbeam assembly 30 is provided with a coupler 33;

The driving wheel assembly 40 that can move along the rail is detachably provided at the left and right ends of the cross beam assembly 30;

The battery pack 50 is detachably installed on the chassis 10 and includes a battery box 51 with a power interface 512. The battery box 51 is equipped with an energy storage battery 52 and an auxiliary inverter 53. The entrance of the energy storage battery 52 and the power interface are 512 is connected, and the outlet of the energy storage battery 52 is connected to the auxiliary inverter 53 .

Among them, the cargo hopper assembly is used to load battery packs 50, lighting modules 03 to assist night construction, and small mechanical equipment such as hydraulic pump station modules 04, air compressor modules 05, and construction tools 06 required for maintenance construction. Considering that each time The type and quantity of mechanical equipment required for construction and maintenance may vary. To avoid wasting installation space, the cargo area of the cargo bucket assembly can be adjusted.

For example, please refer to FIG. 1 , the chassis 10 includes at least one bottom plate 11 and a U-shaped connecting pipe 12 connecting two adjacent bottom plates 11 . The vertical connecting pipes at both ends of the U-shaped connecting pipe 12 are inserted into the connecting holes 111 of the bottom plate 11 .

The chassis 10 is made up of multiple bottom plates 11. Compared with replacing the chassis 10 of different sizes, it is not only cheaper, but also reduces the floor space of the chassis 10 during storage and facilitates storage.

Furthermore, a plurality of connecting holes 111 may be provided in an array in the base plate 11 , and the diameter of the connecting holes 111 is the same as the outer diameter of the vertical connecting pipe of the U-shaped connecting pipe 12 .

By changing the position of the connecting hole 111 into which the U-shaped connecting pipe 12 is inserted, the overlapping area of two adjacent base plates 11 can be adjusted, thereby obtaining chassis 10 with different cargo areas, which not only facilitates the splicing of the base plates 11, but also reduces the cost. heavy effect.

In order to prevent the mechanical equipment from falling out due to bumps, shaking, etc. when the maintenance trolley is moving, preferably, a detachable guardrail assembly 20 can be provided on the outer edge of the chassis 10, and the bottom of the guardrail assembly 20 is inserted into the installation hole of the base plate 11. The guardrail assembly The bottom of 20 is provided with a quick release lock 23.

Please refer to Figure 3. The guardrail assembly 20 includes a U-shaped pipe 21 and a straight pipe 22 for supporting the U-shaped pipe 21. The straight pipe 22 is plug-connected to the horizontal pipe of the U-shaped pipe 21; the U-shaped pipe 21 and the straight pipe 22 are connected. The ends are equipped with quick release locks 23.

When installing the guardrail assembly 20, first insert the straight pipe 22 into the U-shaped pipe 21, then remove the quick release lock 23, insert the U-shaped pipe 21 and the straight pipe 22 into the installation hole of the base plate 11, and expose them to the base plate. At the bottom of 11, a quick-release lock 23 is finally installed, and the quick-release lock 23 is used to prevent the guardrail assembly 20 from moving downward.

In order to simplify the structure of the bottom plate 11 , the shape and size of the mounting hole are usually exactly the same as the shape and size of the connecting hole 111 , so they can be used in common.

The crossbeam assembly 30 is detachably connected to the chassis 10, and specifically the two can be connected through fastening bolts, connecting pins and other connectors.

The crossbeam assembly 30 is located at the front and rear ends of the chassis 10 and is used to connect the drive wheel assembly 40 and the chassis 10, and is provided with couplers 33 on the outer end surface to facilitate the connection of multiple vehicles of the maintenance trolley; the specific number of couplers 33, The structure, shape, spacing, etc. are determined based on actual production needs with reference to existing technology.

Please refer to Figure 12. A coupler 33 is provided at 1/2 of the width of the crossbeam assembly 30, and a connecting pin hole 331 is provided on the coupler 33; the couplers 33 of the front and rear maintenance trolleys are connected through a connecting plate 02 of a certain length, and the coupler 33 It is connected to the connecting plate 02 through a self-locking pin 01 to meet the needs of track turning.

It should be noted that the coupler 33 is arranged perpendicular to the outer end surface of the cross beam assembly 30. At this time, the pulling force direction of the coupler 33 is parallel to the length direction of the maintenance trolley, which can avoid the pulling force of the coupler 33 of the maintenance trolley in the front and rear. The downward direction deviates from the extension direction of the rail, ensuring the smooth movement of the maintenance trolley along the rail.

The drive wheel assembly 40 and the crossbeam assembly 30 are detachably connected, and they can be connected through common detachable connection methods such as snap connections, bolt connections, pin connections, etc.; the drive wheel assembly 40 can move along the rails, which is faster than manual Carrying transfer machinery and equipment is more labor-saving and efficient.

In order to enable the driving wheel assembly 40 to move along the railway track, the driving wheel assembly 40 is provided at the left and right ends of the cross beam assembly 30, and the wheel spacing between the two driving wheel assemblies 40 is the same as the rules of the railway track;

The structure, shape and size of the driving wheel 42 of the driving wheel assembly 40 are determined based on the structure, shape and size of the rail in actual production with reference to the wheels of existing rail locomotives, and will not be described again here.

The driving wheel assembly 40 can be set as a purely mechanical structure, and the driving wheel assembly 40 can be manually pushed to move along the rail; a wheel motor with a braking function can also be selected as the driving wheel 42, and the driving wheel assembly 40 and a battery can be provided The energy storage batteries 52 of the group 50 are electrically connected, and electric driving is more time-saving and labor-saving than manual driving.

Considering that there may be no available power supply at the maintenance location and the small mechanical equipment required for maintenance has a short battery life, the maintenance car is equipped with a battery pack 50, and the battery pack 50 is used to provide centralized energy supply for each mechanical equipment required for maintenance.

Among them, in order to prevent the energy storage battery 52 from directly contacting external rain and dust, the energy storage battery 52 and the auxiliary inverter 53 are usually located in the battery box 51, and the battery box 51 is provided with a power interface 512;

The energy storage battery 52 is electrically connected to the power interface 512 on the surface of the battery box 51, and can be connected to an external power source through the power interface 512 for charging, and can be discharged when necessary for maintenance of the equipment;

The auxiliary inverter 53 is connected to the output end of the energy storage battery 52 and is used to convert the output voltage of the energy storage battery 52 into the operating voltage of the maintenance equipment.

In addition, when the driving wheel assembly 40 is driven by electricity, a vehicle controller 54 can also be provided in the battery pack 50 to assist the remote device in controlling the speed of the driving wheel assembly 40 .

The type, size and capacity of the energy storage battery 52, the type and model of the auxiliary inverter 53, and the type and model of the vehicle controller 54 are determined based on factors such as the total energy consumption and average maintenance time of the maintenance equipment in actual production;

The structure, shape and size of the battery box 51 need to be determined according to the shape and size of the electronic components such as the energy storage battery 52 placed therein.

Please refer to Figure 7. The top of the battery box 51 is provided with a reversible or sliding cover 513 to facilitate the replacement and maintenance of internal components. The surface of the battery box 51 is provided with at least one handle 515 to facilitate the movement of the battery box 51;

The battery box 51 is provided with several partitions 514. The partitions 514 can divide the interior of the battery box 51 into different areas for placing the energy storage battery 52 and the auxiliary inverter 53 respectively. The layout is beautiful and tidy, and is also conducive to fixing various areas. The location of the component.

In order to prevent the battery pack 50 from sliding relative to the chassis 10 and affecting the stability of the electrical connection between the energy storage battery 52 and the maintenance equipment, at least one leg 511 is provided at the bottom of the battery box 51 of the battery pack 50 , and the leg 511 can be inserted into the bottom plate 11 into the connection hole 111 to fix the position of the battery pack 50 on the chassis 10 .

When in use, first connect and fix the cargo hopper assembly and the crossbeam assembly 30, the crossbeam assembly 30 and the driving wheel assembly 40, and install the battery pack 50 on the chassis 10 to complete the assembly of the centralized power platform maintenance trolley; then, Small mechanical equipment required for on-site construction is placed on the chassis 10, and the centralized power platform maintenance trolley is driven to move along the rails to the location to be repaired; small mechanical equipment is used for repair and maintenance. When small mechanical equipment has difficulty in battery life, an auxiliary inverter can be connected 53. Use the battery pack 50 to centrally supply energy to each device.

In this embodiment, the cargo bucket assembly, cross beam assembly 30, drive wheel assembly 40 and battery pack 50 are all detachably connected. The installation structure is simple, easy to disassemble and assemble, has strong versatility, and saves space during storage;

The drive wheel assembly 40 can move along the rail, adapting to on-site maintenance needs and realizing convenient transportation of small mechanical equipment. Compared with manual handling of small mechanical equipment, it reduces manual labor intensity and improves maintenance efficiency;

The battery pack 50 contains an energy storage battery 52, which can centrally supply energy to small mechanical equipment, greatly improve the battery life of each small mechanical equipment, effectively reduce the number of spare equipment, and reduce maintenance personnel and equipment costs.

In addition, the centralized power platform maintenance trolley can be connected to multiple trolleys through the front and rear couplers 33, making it easy to use.

On the basis of the above embodiment, the connection method of the driving wheel assembly 40 and the cross beam assembly 30 is limited. The driving wheel assembly 40 includes a driving wheel 42 and a wheel fork seat 41 provided with a stop 411. The driving wheel 42 is hinged It is installed in the wheel fork seat 41, and the wheel fork seat 41 is clamped in the limiting groove 321 of the driving wheel mounting seat 32 of the cross beam assembly 30.

Therefore, the driving wheel assembly 40 and the cross beam assembly 30 are snap-connected, with a simple connection structure and easy disassembly and assembly.

Preferably, the driving wheel mounting seat 32 can be provided with a locking hole 322, and the locking hole 322 is used to lock the wheel fork seat 41 and limit the sliding of the wheel fork seat 41 relative to the limiting groove 321 during operation.

On the basis of the above embodiment, the connection mode of the cross beam assembly 30 and the chassis 10 is limited. The lock fork 6 passes through the connection hole 111 of the chassis 10 and the connection hole 311 of the cross beam assembly 30 in sequence. The cross beam assembly 30 and the lock There is a self-locking latch 7 between the forks 6, and the self-locking latch 7 and the locking forks 6 are not parallel.

Among them, the lock fork 6 is used to connect the chassis 10 and the cross beam assembly 30, and the self-locking bolt 7 is used to lock and fix the axial position of the lock fork 6 to prevent it from coming out of the connection hole 111 of the chassis 10 or the connection hole of the cross beam assembly 30. Prolapse within 311.

In order to connect the chassis 10 and the crossbeam assembly 30, the lock fork 6 includes a vertical connection part that vertically penetrates the chassis 10 and is inserted into or penetrates the crossbeam assembly 30. The vertical connection part is provided with a through hole for the self-locking bolt 7 to pass through. hole.

Please refer to Figure 8. The lock fork 6 includes a lock fork plate 61 and at least one lock fork pin 62. The lock fork pin 62 is vertically provided on the lock fork plate 61, and the outer circumference of the lock fork pin 62 is provided with a through-limiting hole 621. .

Among them, the locking fork pin 62 serves as a vertical connection part for vertically penetrating the chassis 10 and inserting or penetrating the cross beam assembly 30, and is provided with a through limiting hole 621 for the self-locking latch 7 to pass through;

The locking fork plate 61 is located on the top of the locking fork pin 62 and can cooperate with the self-locking latch 7 to axially limit the locking fork pin 62 to prevent the locking fork pin 62 from moving upward in the axial direction;

In addition, multiple lock fork pins 62 can be provided on the lock fork plate 61 , and the connection strength of the lock fork 6 with the chassis 10 and the crossbeam assembly 30 is enhanced by integrating multiple lock fork pins 62 . Preferably, the locking fork pins 62 are distributed in an array on the locking fork plate 61 so that the force everywhere on the locking fork 6 is relatively uniform.

For example, in a specific embodiment, please refer to Figure 4, Figure 5 and Figure 8. The lock fork plate 61 array of the lock fork 6 is provided with four lock fork pins 62, and the limit holes of the lock fork pins 62 are arranged in the same row. 621 is located on the same axis;

The box beam 31 of the cross beam assembly 30 has a rectangular tube structure. The upper and lower end face arrays of the box beam 31 are provided with through-connecting holes 311. The front and rear end faces of the box beam 31 are provided with four through cross beam keyholes. 312, each lock fork 6 corresponds to 2 beam lock holes 312.

The self-locking latch 7 is inserted into the cross beam assembly 30 and the lock fork 6, and has an L-shaped structure in the locked state. The L-shaped structure can be realized by the hinged rotation of the main rod and the end rod, or by the spring at the end of the main rod and the cross beam. The mounting points on the surface of the assembly 30 are implemented.

Please refer to Figure 8 . The self-locking bolt 7 includes a lock pin 71 , a lock tongue 72 and a lock shaft 73 hingedly connecting the lock pin 71 and the lock tongue 72 . The end of the lock pin 71 relatively far away from the lock shaft 73 is equipped with a spring 74 . The spring 74 One end is connected to the mounting plate at the end of the lock pin 71, and the other end is in contact with the side wall surface of the cross beam assembly 30.

During installation, insert the self-locking latch 7 into the crossbeam assembly 30 so that it passes through the crossbeam lock hole 312 on one side of the crossbeam assembly 30, the limit hole 621 of the lock fork 6, and the crossbeam lock on the other side of the crossbeam assembly 30. hole 312, further compress the spring 74 to cause the lock tongue 72 to automatically fall, forming a self-locking state, as shown in Figure 9;

On the contrary, re-compress the spring 74 to straighten the lock tongue 72, as shown in Figure 10, and the self-locking bolt 7 can be disassembled.

In order to reduce the impact of the spring 74 on the surface of the cross beam assembly 40, preferably, a washer 75 can be provided around the lock pin 71, and the washer 75 is provided between the spring 74 and the surface of the cross beam assembly 40.

In this embodiment, the lock fork 6 is used to connect the chassis 10 and the crossbeam assembly 30, and the self-locking function of the self-locking bolt 7 is used to lock the lock fork 6. Compared with the bolt connection, installation and disassembly are more convenient.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

The centralized power platform maintenance trolley provided by the present invention has been introduced in detail above. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and the core idea of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of the claims of the present invention.

Claims (8)

1. A centralized power platform maintenance trolley, comprising:

a bucket assembly comprising a chassis (10);

the beam assembly (30) is detachably arranged at the front end and the rear end of the chassis (10), and a coupler (33) is arranged on the outer end face of the beam assembly (30);

the driving wheel assembly (40) can move along the rail and is detachably arranged at the left end and the right end of the beam assembly (30);

the battery pack (50) is detachably arranged on the chassis (10) and comprises a battery box (51) provided with a power interface (512), an energy storage battery (52) and an auxiliary inverter (53) are arranged in the battery box (51), an inlet of the energy storage battery (52) is connected with the power interface (512), and an outlet of the energy storage battery (52) is connected with the auxiliary inverter (53).

2. The centralized power platform maintenance trolley according to claim 1, wherein the chassis (10) comprises at least one bottom plate (11) and a U-shaped connecting pipe (12) for connecting two adjacent bottom plates (11), and vertical connecting pipes at two ends of the U-shaped connecting pipe (12) are inserted into connecting holes (111) of the bottom plates (11).

3. The centralized power platform maintenance trolley according to claim 2, wherein a detachable guardrail assembly (20) is arranged on the outer edge of the chassis (10), the bottom of the guardrail assembly (20) is inserted into the mounting hole of the bottom plate (11), and a quick-release lock catch (23) is arranged on the bottom of the guardrail assembly (20).

4. A concentrated power platform maintenance trolley according to claim 3, characterized in that the dimensions of the connection hole (111) and the mounting hole are the same.

5. The concentrated power platform maintenance trolley according to any one of claims 1 to 4, wherein the driving wheel assembly (40) comprises a driving wheel (42) and a fork seat (41) provided with a spigot (411), the driving wheel (42) is hinged in the fork seat (41), and the fork seat (41) is clamped in a limiting groove (321) of the beam assembly (30).

6. The concentrated power platform maintenance trolley according to any one of claims 1 to 4, wherein a locking fork (6) sequentially passes through a connecting hole (111) of the chassis (10) and a connecting hole (311) of the beam assembly (30), a self-locking bolt (7) is arranged between the beam assembly (30) and the locking fork (6), and the self-locking bolt (7) is not parallel to the locking fork (6).

7. The centralized power platform maintenance trolley according to claim 6, wherein the locking fork (6) comprises a locking fork plate (61) and at least one locking fork pin (62), the locking fork pin (62) is vertically arranged on the locking fork plate (61), and a through limiting hole (621) is formed in the periphery of the locking fork pin (62).

8. The centralized power platform maintenance trolley according to claim 6, wherein the self-locking bolt (7) comprises a lock pin (71), a lock tongue (72) and a lock shaft (73) which is hinged with the lock pin (71) and the lock tongue (72), one end, relatively far away from the lock shaft (73), of the lock pin (71) is sleeved with a spring (74), one end of the spring (74) is connected with a mounting plate at the end of the lock pin (71), and the other end of the spring is abutted with a side wall surface of the beam assembly (30).