Supporting device for maintenance of coal conveying system

Abstract

The invention discloses a supporting device for maintenance of a coal conveying system, and relates to the technical field of supporting devices. The device comprises a bottom plate, a lifting mechanism is arranged at the top of the bottom plate, a mounting plate is arranged on the lifting mechanism, a maintenance plate is fixedly connected to the mounting plate through a supporting rod, a stair assembly and at least one extension plate are arranged between the maintenance plate and the bottom plate, the extension plate is rotationally arranged on the side portion of the maintenance plate through a rotating shaft, and the extension plate is horizontally and fixedly connected with a guardrail assembly relative to the rotating shaft. A telescopic cylinder is rotationally connected to the mounting plate, the driving end of the telescopic cylinder is hinged to the extension plate, an embedding groove allowing the guardrail assembly to be embedded is embedded in the overhaul plate, when the telescopic cylinder stretches, the extension plate and the guardrail assembly are parallel to the overhaul plate, and when the telescopic cylinder contracts, the extension plate and the guardrail assembly are perpendicular to the overhaul plate. The extension plate is driven by the telescopic cylinder to rotate along the overhauling plate, the overhauling area of the overhauling plate is changed, and therefore the overhauling efficiency of equipment on the coal conveying system is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of supporting devices, and in particular relates to a supporting device for maintenance of a coal conveying system. Background Art

[0002] As an indispensable key link in many industries such as coal-fired power generation, coal washing and processing, and coal supply for large industrial boilers, the coal transportation system undertakes the heavy and continuous task of coal transportation. It includes a large number of complex equipment such as belt conveyors, coal drop pipes, coal bins, crushers, coal feeders, etc. These equipment are in high-load operation for a long time, and are subject to frequent wear, aging and failures, so they need regular maintenance. The existing technology is to set up a maintenance platform next to the equipment to achieve later maintenance. On the one hand, it occupies more site area, and on the other hand, different maintenance platforms need to be built for mechanical equipment in different positions, so as to operate and repair each mechanical equipment. Not only is the investment too much, but the fixed maintenance platform cannot be reused, and the later dismantling also requires costs, thereby increasing the construction cost of the coal transportation system.

[0003] A Chinese patent with patent announcement number CN220115757U discloses a mobile maintenance and operation platform for a coal conveying system. The device is composed of a plurality of rods, and the specific height and width can be flexibly designed according to the on-site use requirements, and can be moved at will through a mobile mechanism. It can not only replace multiple fixed maintenance operation platforms, save space and investment, but also realize convenient maintenance of high-level equipment. However, the construction and dismantling procedures between the rods of the device are complicated and labor-intensive, and it also occupies a large amount of maintenance site space, reducing the maintenance efficiency of the equipment on the coal conveying system.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a support device for maintenance of a coal conveying system, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A support device for maintenance of a coal conveying system, comprising: a bottom plate, a lifting mechanism is provided on the top of the bottom plate, a mounting plate is provided on the lifting mechanism, a maintenance plate is fixedly connected to the mounting plate through a plurality of support rods arranged in pairs and opposite to each other, a staircase assembly is provided between the maintenance plate and the bottom plate, and a plurality of universal wheels are fixedly connected to the bottom of the bottom plate;

[0008] At least one extension plate is rotatably arranged on the side of the inspection plate via a rotating shaft, the extension plate is horizontally fixedly connected with a guardrail assembly relative to the rotating shaft, a telescopic cylinder is rotatably connected to the mounting plate, a driving end of the telescopic cylinder is hinged to the extension plate, an embedding groove for embedding the guardrail assembly is embedded in the inspection plate, when the telescopic cylinder is extended, the extension plate and the guardrail assembly are parallel to the inspection plate, and when the telescopic cylinder is retracted, the extension plate and the guardrail assembly are perpendicular to the inspection plate.

[0009] Optionally, the staircase assembly includes:

[0010] A first stair tread, a first end of which is fixedly connected to the bottom plate;

[0011] The second stair board is slidably arranged at the second end of the first stair board, and the end of the second stair board facing away from the first stair board is fixedly connected to the inspection board. The first stair board and the second stair board are staggered, and a slider is relatively fixedly connected to the first stair board. The first stair board is provided with a sliding groove for the slider to slide, and the second stair board is provided with a plurality of positioning holes along its length direction, and the first stair board is provided with positioning pins for positioning the positioning holes.

[0012] Optionally, the guardrail assembly includes a guardrail connecting rod and a plurality of guardrail rod bodies, the plurality of guardrail rod bodies are arranged at intervals along the length direction of the extension plate, and the guardrail connecting rod passes through and is fixedly connected to one end of the plurality of guardrail rod bodies facing away from the extension plate.

[0013] Optionally, the inspection plate is provided with a plurality of through slots connected to the embedding slots, and the length of the through slots is smaller than the length of the guardrail rod body.

[0014] Optionally, a collecting frame communicating with the plurality of through slots is fixedly connected to the bottom of the inspection plate, and the collecting frame is a hollow structure with openings passing through both ends.

[0015] Optionally, a guide block is fixedly connected inside the collection frame, the guide block is a triangular structure, and the inclined end surface of the guide block is inclined toward the opening direction of the collection frame.

[0016] Optionally, a plurality of baffles are fixedly connected to the mounting plate relative to the extension plate.

[0017] Optionally, a fence net is fixedly connected to the edge of the inspection plate adjacent to the extension plate.

[0018] Optionally, a connecting block is fixedly connected between the telescopic cylinder and the extension plate, and the connecting block is a triangular structure.

[0019] Optionally, a plurality of telescopic rod mechanisms are installed between the base plate and the mounting plate.

[0020] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time:

[0021] 1. By setting up an extension plate and guardrail components, the extension plate is driven to rotate along the inspection plate by the telescopic cylinder to change the inspection area of ​​the inspection plate. The overall operation steps are simple and the height is adjustable, so that it can flexibly cope with equipment of different heights in the coal transportation system. At the same time, the expandable extension plate can expand the working space as needed to adapt to multi-person collaborative maintenance or large-scale component maintenance. When it is folded, it does not affect the passage of the device in narrow passages and other places. The built-in guardrail component ensures the safety of personnel and prevents high-altitude falling accidents. In particular, it provides reliable protection for maintenance personnel during maintenance at high places, thereby improving the maintenance efficiency of equipment on the coal transportation system;

[0022] 2. The staircase assembly solves the problem of dynamic adjustment of the staircase length due to the height change of the access panel, ensuring that maintenance personnel have a suitable and safe staircase passage regardless of the height of the access panel, avoiding the trouble of traditional fixed stairs being unable to be used normally when the height changes greatly or requiring additional auxiliary ladders to be built, thereby improving the overall practicality and convenience of the device, and the positioning structure is simple and reliable, and easy to operate;

[0023] 3. By providing a through slot, a collection frame and a guide block, when working on the inspection plate, if waste chips, parts and other objects fall, they will first fall into the collection frame through the through slot, and then be discharged along the guide block to the opening of the collection frame. The staff can place collection boxes and other collection equipment at the opening of the collection frame for collection, thereby improving the cleaning efficiency of the collection frame. There is no need to manually dig out scattered objects, saving time and effort.

[0024] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] In the figure:

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 Front view of

[0029] Figure 3 It is a schematic diagram of the structure of the extension plate of the present invention when it is unfolded;

[0030] Figure 4 For the present invention Figure 3 Front view of

[0031] Figure 5 It is a structural schematic diagram of the through slot of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the collection frame and the guide block of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the staircase assembly of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the lifting mechanism and the telescopic rod mechanism of the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Bottom plate; 2. Mounting plate; 3. Telescopic rod mechanism; 4. Lifting mechanism; 5. Extension plate; 6. Guardrail assembly; 61. Guardrail rod body; 62. Guardrail connecting rod; 7. Fence net; 8. Staircase assembly; 81. First staircase board; 82. Second staircase board; 83. Positioning hole; 84. Positioning pin; 85. Slider; 86. Slide groove; 9. Through groove; 10. Embedded groove; 11. Rotating shaft; 12. Baffle plate; 13. Support rod; 14. Collection frame; 15. Inspection plate; 16. Universal wheel; 17. Telescopic cylinder; 18. Connecting block; 19. Guide block.

[0037] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] The present invention will now be described in further detail with reference to the accompanying drawings.

[0039] See also Figure 1-8As shown, in this embodiment, a support device for maintenance of a coal conveying system is provided, comprising a base plate 1, a lifting mechanism 4 is provided on the top of which, a mounting plate 2 is provided on the lifting mechanism 4, an inspection plate 15 is fixedly connected to the mounting plate 2 through a plurality of support rods 13 arranged in pairs opposite to each other and crosswise, a stair assembly 8 is provided between the inspection plate 15 and the base plate 1, a plurality of universal wheels 16 are fixedly connected to the bottom of the base plate 1, at least one extension plate 5 is rotatably arranged on the side of the inspection plate 15 through a rotating shaft 11, the extension plate 5 is horizontally fixedly connected to the guardrail assembly 6 relative to the rotating shaft 11, a telescopic cylinder 17 is rotatably connected to the mounting plate 2, a driving end of the telescopic cylinder 17 is hinged to the extension plate 5, an embedding groove 10 for embedding the guardrail assembly 6 is embedded in the inspection plate 15, when the telescopic cylinder 17 is extended, the extension plate 5 and the guardrail assembly 6 are parallel to the inspection plate 15, when the telescopic cylinder 17 is retracted, the extension plate 5 and the guardrail assembly 6 are perpendicular to the inspection plate 15.

[0040] The bottom plate 1 serves as the foundation of the entire device. The universal wheels 16 at the bottom facilitate moving the device to various maintenance positions of the coal conveying system. The lifting mechanism 4 at the top can adopt various driving forms such as hydraulic and electric screws to drive the mounting plate 2 to move up and down, thereby adjusting the height of the maintenance plate 15 to adapt to the maintenance needs of coal conveying equipment at different heights. Multiple groups of support rods 13 arranged in pairs on the mounting plate 2 form a scissor-like structure, which on the one hand enhances the stability of the lifting process of the maintenance plate 15, and on the other hand can effectively disperse the weight carried to ensure that the structure is stable under the load of maintenance personnel and tools. The staircase assembly 8 connects the bottom plate 1 and the maintenance plate 15 to facilitate personnel to go up and down. The extension plate 5 is connected to the maintenance plate 15 by the rotating shaft 11. In the initial state, it can be folded up and close to the maintenance plate 15 and the mounting plate 2, and the extension plate 5 and the maintenance plate 15 are in a vertical state. When the area of ​​the maintenance plate 15 needs to be increased, the extension plate 5 is driven to rotate by the telescopic cylinder 17 to push the extension plate 5 to rotate around the rotating shaft 11 to the maintenance plate 15. When the extension plate 15 is in parallel, the area of ​​the working platform is expanded. At this time, the guardrail assembly 6 is located in the embedded groove 10, so that the guardrail assembly 6 and the inspection plate 15 are in the same horizontal plane. Similarly, when the telescopic cylinder 17 is retracted, the extension plate 5 is pulled back to be perpendicular to the inspection plate 15 to save space. At this time, the guardrail assembly 6 is erected to play a protective role. The overall operation steps are simple and the height is adjustable, so that it can flexibly cope with equipment of different heights in the coal conveying system, such as rollers and rollers at different positions of the belt conveyor, and maintenance of coal drop pipes at different heights, etc. It has strong versatility. At the same time, hydraulic cylinders can also be placed on the inspection plate 15 to support the maintenance part. At the same time, the expandable extension plate 5 can expand the working space as needed to adapt to multi-person collaborative maintenance or large-scale component maintenance. When it is folded, it does not affect the passage of the device in narrow passages and other places. The built-in guardrail assembly 6 ensures the safety of personnel and prevents high-altitude falling accidents. Especially when performing maintenance at high places, it provides reliable protection for maintenance personnel, thereby improving the maintenance efficiency of equipment on the coal conveying system.

[0041] It should be noted that the device in this embodiment can be used for the inspection and support of equipment on the coal transportation system. For example, the equipment that needs to be inspected can be placed on the inspection plate 15 to facilitate workers to carry out inspection. The application scope of the device is improved by the extension plate 5 and the lifting mechanism 4, which is convenient for repairing equipment in different positions. At the same time, in this embodiment, the lifting mechanism 4 is a scissor lift, and the structure and working principle of the lifting mechanism 4 and the telescopic cylinder 17 are both existing technologies. Secondly, the telescopic cylinder 17 can be an electric telescopic cylinder 17, a hydraulic telescopic rod, etc. Further, the universal wheel 16 is a universal wheel 16 structure with a brake. In this embodiment, the extension plate 5 is divided into two pieces, and they are arranged on both sides of the inspection plate 15 for relative rotation to maximize the length of the inspection plate 15 and improve the application scope of the device.

[0042] In this embodiment, if Figure 1 , Figure 2 and Figure 7 As shown, the stair assembly 8 includes a first stair board 81, a first end of which is fixedly connected to the bottom plate 1, a second stair board 82, which is slidably arranged at the second end of the first stair board 81, and an end of the second stair board 82 away from the first stair board 81 is fixedly connected to the inspection plate 15, the first stair board 81 and the second stair board 82 are staggered, a slider 85 is relatively fixedly connected to the first stair board 81, a slide groove 86 for the slider 85 to slide is provided on the first stair board 81, a plurality of positioning holes 83 are penetrated by the second stair board 82 along its length direction, and a positioning pin 84 for positioning the positioning hole 83 is provided on the first stair board 81. Specifically, when the lifting mechanism 4 drives the inspection plate 15 to rise or fall, the second stair board 8 The first stair tread 81 can slide relatively under the guidance of the slider 85 and the slide groove 86 structure to change the overall length of the staircase and adapt to different height differences. The positioning pin 84 is inserted into the positioning hole 83 at different positions to fix the position of the second stair tread 82 relative to the first stair tread 81, ensuring the stability of the staircase and the safety of personnel going up and down. The problem that the length of the staircase needs to be dynamically adjusted due to the height change of the access panel 15 is solved, ensuring that no matter what height the access panel 15 is at, the maintenance personnel have a suitable and safe stairway, avoiding the trouble of the traditional fixed staircase being unable to be used normally when the height changes greatly or the need to build an additional auxiliary ladder, improving the overall practicality and convenience of the device, and the positioning structure is simple and reliable, and easy to operate.

[0043] In this embodiment, if Figure 1 and Figure 3As shown, the guardrail assembly 6 includes a guardrail connecting rod 62 and a plurality of guardrail rod bodies 61. The plurality of guardrail rod bodies 61 are arranged at intervals along the length direction of the extension plate 5. The guardrail connecting rod 62 passes through and is fixedly connected to one end of the plurality of guardrail rod bodies 61 away from the extension plate 5. Specifically, the guardrail connecting rod 62 connects the plurality of guardrail rod bodies 61 arranged at intervals to form an integral guardrail structure, which is installed on the extension plate 5. When the extension plate 5 is rotated to be perpendicular to the inspection plate 15, the guardrail rod body 61 serves to prevent people from stepping out of the working platform from the side. The guardrail connecting rod 62 enhances the overall structural strength, so that the guardrail can withstand a certain lateral impact force.

[0044] In this embodiment, if Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the inspection plate 15 is penetrated by a plurality of through grooves 9 connected with the embedding grooves 10, the length of the through grooves 9 is less than the length of the guardrail rod body 61, and a collecting frame 14 connected with the plurality of through grooves 9 is fixedly connected to the bottom of the inspection plate 15, the collecting frame 14 is a hollow structure with openings penetrated at both ends, and a guide block 19 is fixedly connected inside the collecting frame 14, the guide block 19 is a triangular structure, and the inclined end face of the guide block 19 is inclined toward the opening direction of the collecting frame 14. Specifically, when working on the inspection plate 15, if waste chips, parts and other objects fall, they will first fall into the collecting frame 14 through the through grooves 9, and then be discharged along the guide block 19 to the opening of the collecting frame 14. The staff can place a collection box or other collecting equipment at the opening of the collecting frame 14 for collection, thereby improving the cleaning efficiency of the collecting frame 14, and there is no need to manually dig out scattered objects, saving time and effort.

[0045] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, a plurality of baffles 12 are fixedly connected to the mounting plate 2 relative to the extension plate 5 . Specifically, when the extension plate 5 is rotated to be perpendicular to the inspection plate 15 , the baffles 12 play a blocking role, thereby improving the stability of the extension plate 5 .

[0046] In this embodiment, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the edge of the inspection plate 15 adjacent to the extension plate 5 is fixedly connected with a fence net 7. Specifically, when the extension plate 5 is unfolded, it forms a closed protection area together with the guardrail assembly 6 on the extension plate 5, further filling the protection loopholes, preventing people from stepping out from the corners, and preventing small objects from flying out and falling from the side, thereby ensuring all-round operation safety under complex maintenance conditions.

[0047] In this embodiment, if Figure 2 and Figure 4As shown, a connecting block 18 is fixedly connected between the telescopic cylinder 17 and the extension plate 5. The connecting block 18 is a triangular structure. Specifically, the connecting block 18 with a triangular structure is fixed between the telescopic cylinder 17 and the extension plate 5, thereby enhancing the structural strength of the connection portion between the telescopic cylinder 17 and the extension plate 5. During the telescopic cylinder 17's extension and retraction process, when it is subjected to tension and pressure, the force can be more evenly dispersed to prevent the connection point from being damaged due to stress concentration, thereby ensuring that the telescopic cylinder 17 stably drives the extension plate 5 to rotate.

[0048] In this embodiment, if Figure 1 , Figure 2 , Figure 3 , Figure 8 As shown, multiple sets of telescopic rod mechanisms 3 are installed between the base plate 1 and the mounting plate 2. Specifically, the multiple sets of telescopic rod mechanisms 3 are installed between the base plate 1 and the mounting plate 2, and work in conjunction with the lifting mechanism 4. During the lifting process, the telescopic rod mechanisms 3 play a role of auxiliary support, guidance and enhanced stability, preventing the mounting plate 2 from tilting or shaking due to uneven force, especially when carrying heavy maintenance tools or multiple people working on the maintenance plate 15 at the same time, the weight is evenly shared to ensure smooth and accurate lifting. It should be noted that the structure and working principle of the telescopic rod mechanism 3 are prior art and will not be described here.

[0049] Working principle:

[0050] The bottom plate 1 serves as the foundation of the entire device. The universal wheels 16 at the bottom facilitate the movement of the device to various maintenance positions of the coal conveying system. The lifting mechanism 4 at the top can adopt various driving forms such as hydraulic and electric screws to drive the mounting plate 2 to move up and down, thereby adjusting the height of the inspection plate 15 to adapt to the maintenance needs of coal conveying equipment at different heights. Multiple groups of support rods 13 arranged in pairs on the mounting plate 2 form a scissor-like structure, which on the one hand enhances the stability of the lifting process of the inspection plate 15, and on the other hand can effectively disperse the weight carried to ensure that the structure is stable under the load of maintenance personnel and tools. The staircase assembly 8 connects the bottom plate 1 and the inspection plate 15 to facilitate personnel to go up and down. The extension plate 5 is connected to the inspection plate 15 through the rotating shaft 11. In the initial state, it can be folded up and close to the inspection plate 15 and the mounting plate 2, and the extension plate 5 and the inspection plate 15 are in a vertical state. When the area of ​​the inspection plate 15 needs to be increased, the extension plate 5 is driven to rotate by the telescopic cylinder 17, and the extension plate 5 is pushed to rotate around the rotating shaft 11 to the inspection plate 15 is parallel to each other, expanding the area of ​​the working platform. At this time, the guardrail assembly 6 is located in the embedded groove 10, so that the guardrail assembly 6 and the inspection plate 15 are in the same horizontal plane. Similarly, when the telescopic cylinder 17 is retracted, the extension plate 5 is pulled back to be perpendicular to the inspection plate 15 to save space. At this time, the guardrail assembly 6 is erected to play a protective role. The overall operation steps are simple and the height is adjustable, so that it can flexibly cope with equipment of different heights in the coal conveying system, such as rollers and rollers at different positions of the belt conveyor, and maintenance of coal drop pipes at different heights, etc., with strong versatility. At the same time, hydraulic cylinders can also be placed on the inspection plate 15 to support the maintenance part. At the same time, the expandable extension plate 5 can expand the working space as needed to adapt to multi-person collaborative maintenance or large-scale component maintenance. When it is folded, it does not affect the passage of the device in narrow passages and other places. The built-in guardrail assembly 6 ensures the safety of personnel and prevents high-altitude falling accidents, especially providing reliable protection for maintenance personnel during maintenance at high places, thereby improving the maintenance efficiency of equipment on the coal conveying system.

[0051] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A support device for maintenance of a coal handling system, characterized in that: include: A base plate (1) is provided with a lifting mechanism (4) on the top thereof, a mounting plate (2) is provided on the lifting mechanism (4), an inspection plate (15) is fixedly connected to the mounting plate (2) via a plurality of groups of support rods (13) arranged in pairs and opposite to each other and cross-arranged, a staircase assembly (8) is provided between the inspection plate (15) and the base plate (1), and a plurality of universal wheels (16) are fixedly connected to the bottom of the base plate (1); At least one extension plate (5) is rotatably arranged on the side of the inspection plate (15) via a rotating shaft (11); the extension plate (5) is horizontally fixedly connected to a guardrail assembly (6) relative to the rotating shaft (11); a telescopic cylinder (17) is rotatably connected to the mounting plate (2); a driving end of the telescopic cylinder (17) is hinged to the extension plate (5); an embedding groove (10) is embedded in the inspection plate (15) for embedding the guardrail assembly (6); when the telescopic cylinder (17) is extended, the extension plate (5) and the guardrail assembly (6) are parallel to the inspection plate (15); when the telescopic cylinder (17) is retracted, the extension plate (5) and the guardrail assembly (6) are perpendicular to the inspection plate (15).

2. A support device for maintenance of a coal handling system according to claim 1, characterized in that: The staircase assembly (8) comprises: A first staircase plate (81), a first end of which is fixedly connected to the base plate (1); A second stair tread (82) is slidably arranged at the second end of the first stair tread (81); one end of the second stair tread (82) facing away from the first stair tread (81) is fixedly connected to the inspection plate (15); the first stair tread (81) and the second stair tread (82) are staggered; a slider (85) is relatively fixedly connected to the first stair tread (81); a slide groove (86) is provided on the first stair tread (81) for the slider (85) to slide; a plurality of positioning holes (83) are penetrated through the second stair tread (82) along its length direction; and a positioning pin (84) is provided on the first stair tread (81) for positioning the positioning holes (83).

3. A support device for maintenance of a coal handling system according to claim 1, characterized in that: The guardrail assembly (6) comprises a guardrail connecting rod (62) and a plurality of guardrail rod bodies (61), wherein the plurality of guardrail rod bodies (61) are arranged at intervals along the length direction of the extension plate (5), and the guardrail connecting rod (62) penetrates through and is fixedly connected to one end of the plurality of guardrail rod bodies (61) away from the extension plate (5).

4. A support device for maintenance of a coal handling system according to claim 3, characterized in that: The inspection plate (15) is provided with a plurality of through slots (9) communicating with the embedding slots (10), and the length of the through slots (9) is less than the length of the guardrail rod body (61).

5. A support device for maintenance of a coal handling system according to claim 4, characterized in that: A collecting frame (14) communicating with the plurality of through slots (9) is fixedly connected to the bottom of the inspection plate (15); the collecting frame (14) is a hollow structure with openings passing through at both ends.

6. A support device for maintenance of a coal handling system according to claim 5, characterized in that: A guide block (19) is fixedly connected inside the collection frame (14); the guide block (19) is a triangular structure; the inclined end surface of the guide block (19) is inclined toward the opening direction of the collection frame (14).

7. A support device for maintenance of a coal handling system according to claim 1, characterized in that: A plurality of baffles (12) are fixedly connected to the mounting plate (2) relative to the extension plate (5).

8. A support device for maintenance of a coal handling system according to claim 1, characterized in that: A fence net (7) is fixedly connected to the edge of the inspection plate (15) adjacent to the extension plate (5).

9. A support device for maintenance of a coal handling system according to claim 8, characterized in that: A connecting block (18) is fixedly connected between the telescopic cylinder (17) and the extension plate (5), and the connecting block (18) is a triangular structure.

10. A support device for maintenance of a coal handling system according to claim 1, characterized in that: A plurality of groups of telescopic rod mechanisms (3) are installed between the base plate (1) and the mounting plate (2).

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