Chain replacing and installing device of boiler bottom ash leaking and conveying machine

Abstract

The utility model discloses a boiler bottom ash leaking and conveying machine chain replacing and installing device which comprises a box body, the box body comprises at least one pair of supporting side plates, an arc-shaped guide rail, a vertical section guide rail and a plurality of internal supporting pieces, the supporting side plates are symmetrically arranged, the input end of the arc-shaped guide rail is connected with the output end of an ash leaking and conveying machine in an arc mode, and the vertical section guide rail is connected with the vertical section guide rail. The vertical section guide rails are arranged on the inner sides of the supporting side plates along the vertical edges, the upper ends of the vertical section guide rails are in arc connection with the output ends of the arc-shaped guide rails, and the multiple internal supporting pieces are fixedly connected between the supporting side plates. According to the device for replacing and installing the chain of the furnace bottom ash leaking and conveying machine, the arc-shaped guide rail and the vertical-section guide rail are used, the chain is automatically and smoothly transited to the arc-shaped guide rail and the vertical-section guide rail from the ash leaking and conveying machine to be prevented from being clamped, the chain can be continuously installed, and the rotating chain does not need to be manually lifted into a receiving groove section by section through a crowbar in the process; the safety risk in the manual intervention process is avoided, and meanwhile the efficiency of replacing and installing the chain is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of ash discharge devices for incinerators, specifically to a replacement and installation device for the chain of a boiler bottom ash conveyor. Background Technology

[0002] The boiler bottom ash conveyor mainly consists of a housing, scraper chain, head drive wheel, tail driven wheel, guide rail, and guide plate. The conveyor is horizontally installed in the middle, with the head and tail ends curving upwards, both exceeding the platform by more than one meter. Water is injected inside the conveyor to ensure a tight seal at the ash outlet below the grate, simultaneously cooling the falling ash. The ash falls into the conveyor and is scraped onto the boiler ash chute by the rotating scraper on the guide rail, thus transporting the ash to its destination. Due to long-term immersion in the ash water, the scraper chain is prone to corrosion and wear from the guide rail, requiring regular inspection and replacement.

[0003] The problem is that when replacing the chain of the ash conveyor, opening the tail cover and directly connecting it to the original chain, the new chain gets stuck at the entrance of the tail receiving slot and cannot automatically enter the slot. This is because the tail bottom plate of the ash conveyor is an upward-curving flat plate. Each time, manual labor is required to lift the rotating chain into the receiving slot one link at a time using a pry bar. The chain is heavy and moving, which is risky and requires a stopped chain to be installed, resulting in low efficiency. Utility Model Content

[0004] Therefore, it is necessary to address the issues of high risk and low efficiency associated with manually prying the chain, and propose a device for the maintenance and installation of the chain of the furnace bottom ash conveyor. This device allows for continuous chain installation, enabling the chain to smoothly and directly enter the housing on the platform.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A replacement and installation device for a boiler bottom ash conveyor chain includes a housing. The housing includes: at least one pair of supporting side plates, which are symmetrically arranged. Each supporting side plate, in the chain movement direction, includes a first edge, an arc-shaped edge, a vertical edge, and a second edge in sequence. The upper end of the arc-shaped edge is perpendicular to the first edge and arc-connected to the output end of the ash conveyor. The lower end of the arc-shaped edge arc-connected to the upper end of the vertical edge, and the lower end of the vertical edge intersects with the second edge. An arc-shaped guide rail is arranged along the arc-shaped edge on the inner side of the supporting side plates, and its input end is arc-connected to the output end of the ash conveyor. A vertical guide rail is arranged along the vertical edge on the inner side of the supporting side plates, and its upper end is arc-connected to the output end of the arc-shaped guide rail. Multiple internal support members are fixedly connected between the supporting side plates.

[0007] In some embodiments, the housing further includes an arc-shaped bottom plate, which is vertically fixed to the arc-shaped edge and located below the arc-shaped guide rail. The upper end of the arc-shaped bottom plate is connected to the output end of the ash conveyor by an arc, and there is a gap between the arc-shaped bottom plate and the arc-shaped guide rail.

[0008] In some embodiments, the system further includes a vertical base plate, which is vertically fixed to the vertical edge. The upper end of the vertical base plate and the output end of the arc-shaped base plate are connected by an arc. There is a gap between the vertical base plate and the vertical guide rail.

[0009] In some embodiments, the system further includes a first support plate and a second support plate. The first support plate is connected to the input end of the arc-shaped base plate and the lower end of the vertical base plate. The second support plate is connected to the lower ends of the arc-shaped base plate and the vertical base plate. The second support plate is located above the first support plate. The first support plate, the second support plate, and the vertical base plate form a triangle.

[0010] In some embodiments, the top of the housing and the surface opposite the bottom plate of the vertical section are open.

[0011] In some embodiments, the width of the arc-shaped guide rail and the vertical guide rail is the same as the width of the chain.

[0012] In some embodiments, a guide rail support is further included, which is distributed along the arc-shaped guide rail and the vertical guide rail, and the guide rail support, the support side plate and the guide rail form a triangle.

[0013] In some embodiments, the arc-shaped base plate and the chain come into contact and slide friction occurs.

[0014] In some embodiments, a movable link is further included, which is provided with a fixing hole for installing bolts to detachably connect the housing and the ash conveyor.

[0015] In some embodiments, the movable link is a flange connection, the flange being used to detachably connect the housing and the ash conveyor.

[0016] This invention provides a device for replacing and installing the chain of a furnace bottom ash conveyor. Using arc-shaped guide rails and vertical guide rails, the chain automatically and smoothly transitions from the ash conveyor to the arc-shaped guide rails and vertical guide rails to avoid jamming. The chain can be installed continuously without the need for manual prying to lift the rotating chain into the housing section by section, thus avoiding the safety risks of manual intervention and improving the efficiency of chain replacement and installation. Attached Figure Description

[0017] in:

[0018] Figure 1 This is a partial three-dimensional structural diagram of the box body of the boiler bottom ash conveyor chain replacement and installation device described in this utility model;

[0019] Figure 2 This is a schematic diagram of the installation and connection of the chain replacement and installation device for the boiler bottom ash conveyor described in this utility model;

[0020] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure from the A-direction perspective;

[0021] Figure 4 yes Figure 2 A schematic diagram of the three-dimensional structure from the B-direction view;

[0022] Figure 5 yes Figure 3 Enlarged view at point M;

[0023] Figure 6 yes Figure 2 A schematic diagram of the three-dimensional structure from a C-direction perspective;

[0024] Figure 7 yes Figure 6 A schematic diagram of the flange from the D-direction perspective.

[0025] The markings in the attached diagram are described below:

[0026] 1. Support side plate; 11. First edge; 12. Arc-shaped edge; 13. Vertical edge; 14. Second edge; 2. Arc-shaped guide rail; 3. Vertical section guide rail; 4. Internal support component; 41. First support component; 42. Second support component; 5. Arc-shaped base plate; 6. Vertical section base plate; 7. First support plate; 8. Second support plate; 9. Guide rail support component; 10. Movable connecting component; 101. Fixing hole; 102. Bolt. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0029] To address the shortcomings of existing technologies, the following will be combined with the appendix. Figures 1 to 7 This invention provides a detailed description of a boiler bottom ash conveyor chain replacement and installation device provided in an embodiment of the present invention.

[0030] Please see Figure 1 and Figure 2 , Figure 1 This is a partial three-dimensional structural diagram of the housing of the boiler bottom ash conveyor chain replacement and installation device described in this utility model. Figure 2 This is a schematic diagram of the installation and connection of a boiler bottom ash conveyor chain replacement and installation device as described in this utility model.

[0031] A replacement and installation device for the chain of a boiler bottom ash conveyor includes a housing, the housing comprising:

[0032] At least one pair of support side plates 1 are provided, and the support side plates 1 are symmetrically arranged. The support side plates 1 include a first edge 11, an arc edge 12, a vertical edge 13 and a second edge 14 in sequence in the direction of chain L movement. The upper end of the arc edge 12 is perpendicular to the first edge 11 and is connected to the output end of the ash conveyor by an arc. The lower end of the arc edge 12 is connected to the upper end of the vertical edge 13 by an arc. The lower end of the vertical edge 13 intersects with the second edge 14.

[0033] The arc-shaped guide rail 2 is set along the arc-shaped edge 12 on the inner side of the support side plate 1, and the input end of the arc-shaped guide rail 2 is connected to the output end of the ash conveyor by an arc; the vertical section guide rail 3 is set along the vertical edge 13 on the inner side of the support side plate 1, and the upper end of the vertical section guide rail 3 is connected to the output end of the arc-shaped guide rail 2 by an arc; multiple internal support members 4 are fixedly connected between the support side plates 1.

[0034] Specifically, in existing technology, the ash conveyor is installed horizontally in the middle, with both the head and tail sections curving upwards, each more than one meter higher than the platform. The tail bottom plate is also curved upwards, higher than the flat plate, causing the new chain L to get stuck in the tail receiving slot and prevent it from automatically entering. Each time, manual prying is required to lift the rotating chain L section by section into the receiving slot. Since the chain L is heavy and moving, this poses a significant risk and requires a stopped chain L for installation, resulting in low efficiency. By adding an arc-shaped slide rail at the tail end, tangent to the connection point of the ash conveyor, a smooth transition can be achieved, preventing jamming.

[0035] Multiple internal support members 4 are fixedly connected between at least one pair of support side plates 1, and the fixed connection between them forms the skeleton of the box. The multiple internal support members 4 include a first support member 41 and a second support member 42, which are used to fix the two support side plates 1. They can be welded or connected by bolts 102.

[0036] The first edge 11 of the two supporting side plates 1 is perpendicularly connected to the ash conveyor. The upper end of the arc edge 12 is perpendicular to the first edge 11 and is connected to the arc of the output end of the ash conveyor. The intersection point is the tangent point, which can realize the smooth transition of the chain L from the ash conveyor and avoid jamming.

[0037] The tangent at the lower end of the arc-shaped guide rail 2 is in the vertical direction, so the upper end of the vertical guide rail 3 and the lower end of the arc-shaped guide rail 2 can be connected by an arc, and the chain L can smoothly transition from the arc-shaped guide rail 2 to the vertical guide rail 3, avoiding jamming.

[0038] Chain L automatically moves from the ash conveyor to the arc-shaped guide rail 2 and the vertical guide rail 3 without human intervention. Chain L can be installed without the safety risks associated with manual intervention, while also improving the efficiency of replacing and installing chain L. It can be installed at the tail of the ash conveyor when needed and removed after use without changing the original structure of the ash conveyor or affecting its normal operation.

[0039] This invention provides a device for replacing and installing the chain L of a furnace bottom ash conveyor. This device allows the chain L to be smoothly and directly inserted into the housing on the platform. The chain L can be installed continuously without human intervention, eliminating the risks of personnel lifting the chain L. It also allows for continuous installation of the chain L, making it faster and more convenient.

[0040] In one embodiment, the housing further includes an arc-shaped bottom plate 5, which is vertically fixed to the arc-shaped edge 12 and located below the arc-shaped guide rail 2. The upper end of the arc-shaped bottom plate 5 is connected to the output end of the ash conveyor in an arc, and there is a gap between the arc-shaped bottom plate 5 and the arc-shaped guide rail 2.

[0041] Specifically, the curved edges 12 of the two supporting side plates 1 are located at the bottom, and the curved guide rail 2 is fixedly installed on the curved edges 12, which also serves to fix the two supporting side plates 1. At the same time, the curved bottom plate 5 also supports the chain L. The cross-section of the chain L is T-shaped. The two sides of the chain L are placed on the guide rail and in contact with the guide rail. The bottom of the chain L is in contact with the curved bottom plate 5, which also supports the chain L. It can share some of the weight of the chain L with the curved guide rail 2, reducing frictional damage to the guide rail caused by the chain L. This avoids the safety risks of manual intervention and also improves the efficiency of replacing and installing the chain L.

[0042] In one embodiment, it also includes a vertical base plate 6, which is vertically fixed to the vertical edge 13. The upper end of the vertical base plate 6 is connected to the output end of the arc-shaped base plate 5 by an arc. There is a gap between the vertical base plate 6 and the vertical guide rail 3.

[0043] Specifically, because the cross-section of chain L is T-shaped and chain L has a certain thickness, the bottom plate 6 of the vertical section contacts the bottom of chain L, and the guide rail 3 of the vertical section contacts the protruding parts on both sides of chain L. Therefore, there is a gap between the bottom plate 6 of the vertical section and the guide rail 3 of the vertical section.

[0044] The vertical guide rail 3 is fixedly connected to the two supporting side plates 1, thus securing the two supporting side plates 1. The intersection of the arc-shaped base plate 5 and the vertical base plate 6 is the tangent point of the arc-shaped base plate 5, and the tangent at this point is in the vertical direction, enabling a smooth transition of the chain L from the arc-shaped base plate 5 direction to the vertical direction. This prevents the chain L from getting stuck, and the chain L can be installed without manual intervention, avoiding the safety risks associated with manual intervention and improving the efficiency of replacing and installing the chain L.

[0045] In one embodiment, the system further includes a first support plate 7 and a second support plate 8. The first support plate 7 is connected to the input end of the arc-shaped base plate 5 and the lower end of the vertical base plate 6. The second support plate 8 is connected to the lower ends of the arc-shaped base plate 5 and the vertical base plate 6. The second support plate 8 is located above the first support plate 7. The first support plate 7, the second support plate 8, and the vertical base plate form a triangle.

[0046] Specifically, because the chain L is relatively heavy, it puts a lot of pressure on the arc-shaped guide rail 2 and the arc-shaped base plate 5. Over time, the support side plate 1 will deform under the force and may jam the chain L. The first support plate 7 and the second support plate 8 are installed under the arc-shaped base plate 5. The two support plates and the vertical base plate 6 form a triangular structure, which has stability and increases the stability of the box.

[0047] In one embodiment, the top of the housing and the side opposite to the bottom plate 6 of the vertical section are open.

[0048] Specifically, the top of the box and the surface opposite the bottom plate 6 are open, which reduces weight, facilitates disassembly, and allows for easy observation of the chain L's slippage. The multiple internal support components 4 reinforce the two supporting side plates 1, replacing the top plate and the surface opposite the bottom plate 6 without affecting the box's stability and facilitating cleaning.

[0049] Please see Figure 3 , Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure from the A-direction perspective. In one embodiment, the spacing between the arc-shaped guide rails 2 and the spacing between the vertical guide rails 3 are the same as the width of the chain L.

[0050] Specifically, the width of the curved guide rail 2 is the same as the width of the chain L to ensure that the chain L slides smoothly and avoids horizontal swaying. If the spacing of the curved guide rail 2 is too wide, the chain L will wobble during sliding. If the spacing of the curved guide rail 2 is too narrow, the chain L will rub against the supporting side plate 1 during sliding, or even get stuck.

[0051] Please see Figure 4 , Figure 4 yes Figure 2 The schematic diagram of the three-dimensional structure from the B-direction perspective, in one embodiment, also includes a guide rail support 9, which is distributed along the arc-shaped guide rail and the vertical guide rail. The guide rail support 9, the support side plate 1 and the guide rail form a triangle.

[0052] Specifically, the guide rail support 9 is distributed along the trajectory of the arc-shaped guide rail 2 and the vertical guide rail 3. Figure 4The guide rail shown is a vertical guide rail 3. The vertical guide rail 3, the guide rail support 9, and the support side plate 1 form a triangle, which increases the stability of the vertical guide rail 3. The guide rail also includes an arc-shaped guide rail 2. The arc-shaped guide rail 2, the guide rail support 9, and the support side plate 1 form a triangle (not shown in the figure, but the principle is the same).

[0053] The curved guide rail 2 is perpendicularly connected to the support side plate 1. The chain L slides on the curved guide rail 2. The curved guide rail 2 is subjected to friction and gravity from the chain L. Over time, the curved guide rail 2 may deform, tilt downwards, and the angle between it and the support side plate 1 may change from a right angle to an obtuse angle, causing the chain L to fall off, or the contact between the chain L and the curved guide rail 2 may change from surface contact to line contact, increasing frictional loss. Therefore, the guide rail support 9 can make the curved guide rail 2 more stable, prevent deformation under stress, and allow the chain L to slide more smoothly on the curved guide rail 2.

[0054] In one embodiment, the arc-shaped base plate 5 and the chain L come into contact and slide friction occurs.

[0055] Specifically, the chain L is T-shaped, and the arc-shaped base plate 5 contacts the bottom of the chain L. The chain L slides on the arc-shaped base plate 5, which bears part of the weight of the chain L and contacts most of the lower surface area of ​​the chain L. This reduces the pressure and friction between the side of the chain L and the guide rail, allowing the lower surface of the chain L to be subjected to uniform friction. At the same time, it provides support for the middle of the chain L, preventing the chain L from bending due to lack of support in the middle.

[0056] Please see Figure 5 , Figure 6 and Figure 7 , Figure 5 yes Figure 3 Enlarged view at point M, Figure 6 yes Figure 2 A schematic diagram of the three-dimensional structure from a C-direction perspective. Figure 7 yes Figure 6 A schematic diagram of the flange from a D-direction perspective. In one embodiment, a movable link 10 is also included, which is provided with a fastener hole 101 for mounting bolts 102 to detachably connect the housing and the ash conveyor.

[0057] Specifically, when using the device, the cover plate of the ash conveying device is opened, and the bolt 102 is installed into the fixing hole 101 of the movable link 10, thereby hinged the movable link 10 of the device to the box and the ash conveyor. During use, the cover plate of the ash conveying device is opened, and the bolt 102 is installed into the fixing hole 101 of the movable link 10, thereby hinged the movable link 10 of the device to the box and the ash conveyor. The chain L automatically slides from the ash conveyor to the arc-shaped guide rail 2 and the arc-shaped base plate 5, and then slides to the vertical section guide rail 3 and the vertical section base plate 6. After use, the bolt 102 is pulled out from the fixing hole 101 of the movable link 10, thereby separating the movable link 10 of the device from the box and the ash conveyor. Chain L automatically moves from the ash conveyor to the curved guide rail 2 and the vertical guide rail 3, allowing for continuous installation. This eliminates the need for manual prying of the rotating chain section by section into the receiving slot, avoiding safety risks associated with manual intervention and improving the efficiency of chain L replacement. It can be installed at the tail of the ash conveyor when needed and removed after use, without altering the original structure or affecting its normal operation. This eliminates the risks associated with lifting chain L and allows for continuous, faster, and more convenient installation.

[0058] In one embodiment, a flange connection is used, wherein the flange is used to detachably connect the housing and the ash conveyor.

[0059] The advantages of flange connections are: high strength, ease of disassembly and installation, and wide applicability. Flange connections have high bonding strength and can withstand greater pressure and tension, making them suitable for high-pressure and high-temperature piping systems. Flange connections are suitable for pipes and equipment of various sizes, and are particularly common in large-diameter, high-temperature, high-pressure, and corrosive environments. They are easy to disassemble and install, facilitating equipment maintenance and repair, and improving the efficiency of replacing and installing the chain L. It can be installed at the tail of the ash conveyor when needed and removed after use without altering the original structure or affecting the normal operation of the ash conveyor. It eliminates the risks associated with lifting the chain L and allows for continuous installation of the chain L, making it faster and more convenient.

[0060] The operating procedure of this device is as follows: When in use, open the cover plate of the ash conveying device, install the bolt 102 into the fixing hole 101 of the movable link 10, and then hinge the movable link 10 of the device together with the box and the ash conveyor. The chain L automatically slides from the ash conveyor to the arc guide rail 2 and the arc base plate 5, and then slides to the vertical guide rail 3 and the vertical base plate 6. After use, pull out the bolt 102 from the fixing hole 101 of the movable link 10, and then separate the movable link 10 of the device from the box and the ash conveyor.

[0061] The beneficial effects of this device are as follows: Multiple internal support members 4 are fixedly connected between at least one pair of support side plates 1 and form the skeleton of the box. The function of the multiple internal support members 4 is to fix the two support side plates 1. The first edge 11 of the two support plates is perpendicularly connected to the ash conveyor. The upper end of the arc edge 12 is perpendicular to the first edge 11, that is, it is connected to the arc of the output end of the ash conveyor. The intersection point is the tangent point, which can realize the smooth transition of the chain L from the ash conveyor and avoid jamming. The tangent of the lower end of the arc guide rail 2 is in the vertical direction, so the upper end of the vertical guide rail 3 and the lower end of the arc guide rail 2 can be connected by an arc, which can realize the smooth transition of the chain L from the arc guide rail 2 to the vertical guide rail 3. Chain L automatically moves from the ash conveyor to the arc-shaped guide rail 2 and the vertical guide rail 3, allowing for continuous installation. This eliminates the need for manual prying of the rotating chain section by section into the clearance, avoiding the safety risks associated with manual intervention and improving the efficiency of chain L replacement and installation. It can be installed at the tail of the ash conveyor when needed and removed after use, without altering the original structure of the ash conveyor or affecting its normal operation. This eliminates the risks associated with lifting chain L and allows for continuous, faster, and more convenient installation.

[0062] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chain replacement installation device for an ash leakage ash conveyor of a boiler furnace bottom, characterized by, The box comprises: at least one pair of support side plates, which are symmetrically arranged and sequentially comprise a first edge, an arc-shaped edge, a vertical edge and a second edge in the moving direction of the chain, the upper end of the arc-shaped edge being perpendicular to the first edge and connected to the output end of the ash discharging and conveying machine, the lower end of the arc-shaped edge being connected to the upper end of the vertical edge in an arc shape, and the lower end of the vertical edge being connected to the second edge; an arc-shaped guide rail arranged inside the support side plate along the arc-shaped edge, the input end of the arc-shaped guide rail being connected to the output end of the ash discharging and conveying machine in an arc shape; a vertical section guide rail arranged inside the support side plate along the vertical edge, the upper end of the vertical section guide rail being connected to the output end of the arc-shaped guide rail in an arc shape; a plurality of internal support members fixedly connected between the support side plates.

2. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 1, characterized in that, The box further comprises an arc-shaped bottom plate fixedly connected to the arc-shaped edge and located below the arc-shaped guide rail, the upper end of the arc-shaped bottom plate being connected to the output end of the ash discharging and conveying machine in an arc shape, and a gap being formed between the arc-shaped bottom plate and the arc-shaped guide rail.

3. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 2, characterized in that, The box further comprises a vertical section bottom plate fixedly connected to the vertical edge, the upper end of the vertical section bottom plate being connected to the output end of the arc-shaped bottom plate in an arc shape, and a gap being formed between the vertical section bottom plate and the vertical section guide rail.

4. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 3, characterized in that, The box further comprises a first support plate connected to the input end of the arc-shaped bottom plate and the lower end of the vertical section bottom plate, and a second support plate connected to the lower ends of the arc-shaped bottom plate and the vertical section bottom plate, the second support plate being located above the first support plate, and the first support plate, the second support plate and the vertical section bottom plate forming a triangle.

5. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 3, characterized in that, The top of the box and the surface opposite to the vertical section bottom plate are open.

6. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 1, characterized in that, The width of the arc-shaped guide rail and the vertical section guide rail is the same as the width of the chain.

7. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 1, characterized in that, The box further comprises guide rail support members distributed along the arc-shaped guide rail and the vertical section guide rail, the guide rail support members, the support side plates and the guide rails forming a triangle.

8. The chain replacement installation device for a boiler bottom ash conveying machine according to claim 2, characterized in that, The arc-shaped bottom plate is in contact with the chain and generates sliding friction.

9. The chain replacement installation device for the ash conveying machine of the boiler furnace bottom according to claim 1, characterized in that, The box further comprises a movable link member provided with a fixing hole for mounting a bolt to detachably connect the box and the ash discharging and conveying machine.

10. The chain replacement installation device for a boiler bottom ash conveying machine according to claim 9, characterized in that, The movable link member is connected by a flange for detachably connecting the box and the ash discharging and conveying machine.

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