Vertical coal mill maintenance platform

Abstract

The utility model discloses a vertical coal mill maintenance platform, which relates to the technical field of coal mill maintenance and comprises a support frame, a support table and guardrails, one end of the support table close to a vertical coal mill is matched with the peripheral wall of the vertical coal mill, and the guardrails are arranged at two side ends of the support table and one end of the support table far away from the vertical coal mill. The guardrail is located on the peripheral side of a manhole door opening path of the vertical coal mill, and a supporting frame is arranged at the bottom of the supporting table. The space, corresponding to the manhole, of the overhaul stand of the vertical coal mill is expanded through the supporting table, so that the manhole door can be completely opened, and the following overhaul requirements are met: the space position requirement is met when multiple persons work in a matched mode, the air circulation performance is good after the manhole is opened, and overhaul workers can enter and exit conveniently; and the guardrails on the supporting table also play a role in protecting the operating personnel, so that the maintenance safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mill maintenance, in particular to a vertical coal mill maintenance platform. Background Art

[0002] A coal mill is a machine used in thermal power plants to crush coal blocks and grind them into coal powder. It is an important auxiliary equipment for pulverized coal furnaces. Coal mills can be divided into high-speed coal mills, medium-speed coal mills and low-speed coal mills according to the high, medium and low speeds of the coal grinding parts. They can also be divided into vertical coal mills and horizontal coal mills according to their shapes.

[0003] Coal mills in the prior art are all provided with a manhole for maintenance operations. At the same time, the coal mill itself is provided with a maintenance platform around the manhole, and a guardrail structure is provided on the maintenance platform. However, the width of the factory maintenance platform of some coal mills is smaller than the length of the manhole door. The setting of the guardrail will hinder the full opening of the manhole door. If the guardrail corresponding to the manhole door is not removed, the manhole door can only be in a half-open state, resulting in poor air flow in the confined space, inconvenience for maintenance personnel to enter and exit, and inconvenience for escape and rescue in case of danger. Therefore, for such coal mills, it is often necessary to remove the guardrail corresponding to the manhole door so that the manhole door can be fully opened. However, there is a safety risk of people falling from a height after removal.

[0004] Therefore, people are in urgent need of a vertical coal mill maintenance platform that improves safety while meeting maintenance needs. Summary of the invention

[0005] The purpose of the utility model is to provide a vertical coal mill maintenance platform to solve the problems existing in the above-mentioned prior art. While the maintenance platform is extended by a support platform, the setting of the guardrail no longer hinders the opening of the manhole door, which can meet the maintenance needs and ensure the safety during maintenance.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides a vertical coal mill maintenance platform, including a support frame, a support platform and a guardrail, the top surface horizontal height of the support platform is not higher than the bottom surface horizontal height of the manhole door of the vertical coal mill, the end of the support platform close to the vertical coal mill matches the outer peripheral wall of the vertical coal mill, both side ends of the support platform and the end away from the vertical coal mill are provided with guardrails, the guardrails are located on the outer peripheral side of the opening path of the manhole door of the vertical coal mill, and the support frame is provided at the bottom of the support platform.

[0007] Preferably, universal wheels are provided at the bottom of the support frame.

[0008] Preferably, the support platform or the support frame is provided with a chain for detachably connecting to the vertical coal mill, and one end of the chain is fixedly connected to the support platform or the support frame.

[0009] Preferably, a ladder is provided on the support frame, and an opening and closing door is provided at a position of the guardrail corresponding to the ladder.

[0010] Preferably, handrails are provided on both sides of the support frame corresponding to the ladder.

[0011] Preferably, the ladder is provided at positions of both side ends of the support frame corresponding to the support platform.

[0012] Preferably, the top surface of the support platform is provided with anti-skid patterns or anti-skid pads.

[0013] Preferably, the horizontal cross-section of the support frame is V-shaped.

[0014] Preferably, a reinforcing rod is provided on the support frame, the top end of the reinforcing rod is connected to the V-shaped tip at the top of the support frame, the bottom end is in contact with the ground, the bottom end of the reinforcing rod is spaced apart from the support frame, and the bottom of the reinforcing rod is connected to the support frame via a connecting rod.

[0015] Preferably, both side ends of the support platform and one end away from the vertical coal mill are provided with skirting boards.

[0016] Compared with the prior art, the utility model mainly achieves the following technical effects:

[0017] The matching design of the support platform and the outer wall of the vertical coal mill allows the support platform to exist as an additional maintenance platform, and the guardrail on the support platform is located on the outer peripheral side of the opening path of the manhole door of the vertical coal mill, which is equivalent to using the support platform to expand the space at the manhole of the vertical coal mill's own maintenance platform, so that the manhole door can be fully opened to meet the following maintenance needs: the space position requirements are met when multiple people work together, the air circulation is good after the manhole is opened, and the maintenance workers are convenient to enter and exit, and the guardrail on the support platform also protects the workers and provides safety for maintenance.

[0018] Compared with the prior art, other solutions of the utility model have achieved the following technical effects:

[0019] The overall maintenance platform can be transported by universal wheels to improve its mobility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1This is the front view of the vertical coal mill maintenance platform of the utility model;

[0022] Figure 2 This is a left view of the vertical coal mill maintenance platform of the utility model;

[0023] Figure 3 It is a top view of the vertical coal mill maintenance platform of the utility model;

[0024] Figure 4 It is a top view of the support frame of the vertical coal mill maintenance platform of the utility model;

[0025] Figure 5 It is a top view of the support platform of the vertical coal mill maintenance platform of the utility model;

[0026] Among them, 1. support frame; 2. support platform; 3. guardrail; 4. universal wheel; 5. ladder; 6. handrail; 7. opening and closing door; 8. plug-in column; 9. reinforcement rod; 10. connecting rod; 11. skirting board. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The purpose of the utility model is to provide a vertical coal mill maintenance platform to solve the problems existing in the prior art. While the maintenance platform is extended by a support platform, the setting of the guardrail no longer hinders the opening of the manhole door, which can meet the maintenance needs and ensure the safety during maintenance.

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Please refer to Figures 1 to 5As shown, a vertical coal mill maintenance platform is provided, including a support frame 1, a support platform 2 and a guardrail 3. The horizontal height of the top surface of the support platform 2 is not higher than the horizontal height of the bottom surface of the manhole door of the vertical coal mill. Preferably, the horizontal height of the top surface is flush with the table surface of the maintenance platform provided with the vertical coal mill. The end of the support platform 2 close to the vertical coal mill matches the outer peripheral wall of the vertical coal mill, that is, the end of the support platform 2 close to the vertical coal mill is arc-shaped. The outer peripheral wall of the vertical coal mill referred to in this embodiment includes the outer peripheral wall of the maintenance platform integrally arranged therewith and its own outer peripheral wall. For example, when the support platform 2 corresponds to the body of the vertical coal mill, it matches the outer peripheral wall of the vertical coal mill itself, and when it corresponds to the maintenance platform, it matches the outer peripheral wall of the maintenance platform. The two side ends of the support platform 2 and the far A guardrail 3 is provided at one end away from the vertical coal mill, and the guardrail 3 is located on the outer peripheral side of the opening path of the manhole door of the vertical coal mill. A support frame 1 is provided at the bottom of the support platform 2. The matching design of the support platform 2 and the outer wall of the vertical coal mill allows the support platform 2 to exist as an additional maintenance platform, and the guardrail 3 on the support platform 2 is located on the outer peripheral side of the opening path of the manhole door of the vertical coal mill, which is equivalent to using the support platform 2 to expand the space at the manhole of the maintenance platform of the vertical coal mill itself, so that the manhole door can be fully opened to meet the following maintenance needs: the space position requirements are met when multiple people cooperate in the operation, the air circulation is good after the manhole is opened, and the maintenance workers are convenient to enter and exit, and the guardrail 3 on the support platform 2 also protects the workers and provides maintenance safety.

[0031] The end of the support platform 2 away from the vertical coal mill is also arc-shaped, and the entire support platform 2 is a strip-shaped arc-shaped structure; or the end of the support platform 2 away from the vertical coal mill is flat, etc.

[0032] In this embodiment, the support frame 1 is formed by welding square tubes and angle steels. The vertical rods of the support frame 1 are square tubes, and the transverse rods are angle steels.

[0033] Universal wheels 4 are provided at the bottom of the support frame 1, and the overall maintenance platform can be transported by using the universal wheels 4, thereby improving the convenience of its movement.

[0034] In order to improve the stability of the overall maintenance platform during use, a chain is provided on the support platform 2 or the support frame 1, and one end of the chain is fixedly connected to the support platform 2 or the support frame 1. The connection method can be binding connection or welding, or using bolts or pins to pass through the center hole of the chain and threadedly connected to the support platform 2 or the support frame 1, etc. When connected by bolts or pins, the chain cannot directly pass through the head of the bolt or pin and come out; the other end of the chain is used for detachable connection to the vertical coal mill, and the detachable connection method can be selected from binding, hanging or bolt connection or pin connection, etc. The detachable connection position can be the guardrail 3 of the maintenance platform of the vertical coal mill that has not been removed, or a rod body manually welded on the vertical coal mill, etc. When hanging, a hook needs to be set at the end of the chain, and when bolts or pins are used for connection, bolts need to be passed through the center hole of the chain and threadedly connected to the vertical coal mill.

[0035] In order to facilitate the workers to go up and down the support platform 2 , a ladder 5 is provided on the support frame 1 , and there is at least one ladder 5 . An opening and closing door 7 is provided at the position of the guardrail 3 corresponding to the ladder 5 .

[0036] The ladder 5 is formed by welding vertical angle steels on both sides and a plurality of round tubes arranged up and down in the middle.

[0037] Handrails 6 are provided on both sides of the support frame 1 corresponding to the ladder 5 .

[0038] In this embodiment, ladders 5 are provided at both side ends of the support frame 1 corresponding to the support platform 2, so that two operators can go up and down at the same time.

[0039] The specific structure of the opening and closing door 7 in this embodiment is as follows: the opening and closing door 7 is formed by the guardrails 3 arranged at the two side ends of the support platform 2, and the bottom of the two sides of the opening and closing door 7 extends downward with a plug-in rod, and a plug-in column 8 is arranged at the position corresponding to the plug-in rod on the support platform 2, and the plug-in column 8 is provided with a through hole matching the plug-in rod, and the two plug-in columns 8 are one high and one low, and the plug-in rod is rotatably arranged in the plug-in column 8. When the opening and closing door 7 needs to be opened, the opening and closing door 7 is lifted by applying force upward to make the plug-in rod in the plug-in column 8 on the lower side come out, and at this time, the plug-in column 8 on the higher side is still rotatably matched with the plug-in rod, and the opening and closing action can be completed by rotating the opening and closing door 7. When the position of the opening and closing door 7 needs to be fixed, it is sufficient to ensure that the two plug-in rods are both located in the corresponding plug-in columns 8.

[0040] The top surface of the support platform 2 is provided with anti-skid patterns or anti-skid pads to improve the anti-skid property and further improve the completeness of the operation.

[0041] When the anti-slip pattern is selected, the patterned steel plate can be directly used as the support platform 2.

[0042] In order to improve the stability of the overall structure, the horizontal cross-section of the support frame 1 is V-shaped, and preferably, the lengths of the two side arms of the V-shape are the same.

[0043] A reinforcing rod 9 is provided on the support frame 1, and the top of the reinforcing rod 9 is connected to the V-shaped tip at the top of the support frame 1. When the universal wheel 4 is not provided, the bottom end is in contact with the ground. When the universal wheel 4 is provided, the bottom end is in contact with the bottom surface through the universal wheel 4. The bottom end of the reinforcing rod 9 is spaced apart from the support frame 1, and the bottom of the reinforcing rod 9 is connected to the support frame 1 through a plurality of connecting rods 10. Specifically, three connecting rods 10 can be provided, one of which is connected to the tip of the support frame 1 away from the vertical coal mill, and the other two connecting rods 10 are respectively connected to the parts on both sides of the tip. The three connecting rods 10 are located on the same horizontal plane, and the stability of the overall structure can be further improved by the reinforcing rods 9 and the connecting rods 10.

[0044] In the present embodiment, six universal wheels 4 are provided, and the six universal wheels 4 are respectively located at the bottom of the six sharp corners of the V-shaped structure, that is, the four sharp corners at both side ends of the V-shaped structure close to and away from the vertical coal mill and the two sharp corners at the tip close to and away from the vertical coal mill. When a reinforcing rod 9 is provided, the universal wheel 4 at the bottom end of the reinforcing rod 9 replaces the universal wheel 4 at the sharp corner of the V-shaped structure away from the vertical coal mill.

[0045] Both side ends of the support platform 2 and one end away from the vertical coal mill are provided with skirting boards 11 . When the opening and closing door 7 is provided, the setting of the skirting boards 11 should avoid the setting of the opening and closing door 7 .

[0046] Taking the vertical medium-speed coal mill as an example, the data of this maintenance platform are as follows: the height of the support platform 2 is 2100mm, which is flush with the height of the coal mill maintenance platform, the length of the support platform 2 is 4000mm, the width is 700mm, the square tube size of the support frame 1 is 60*40mm, the angle steel size is 60*60mm, the support platform 2 uses a patterned steel plate with a thickness of 4mm, the height of the guardrail 3 is 1050mm, the height of the skirting board 11 is 100mm, and the protruding length of the V-shaped tip of the support frame 1 away from the coal mill is 600mm.

[0047] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0048] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0049] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A vertical coal mill maintenance platform, characterized in that: It includes a support frame, a support platform and a guardrail. The horizontal height of the top surface of the support platform is not higher than the horizontal height of the bottom surface of the manhole door of the vertical coal mill. The end of the support platform close to the vertical coal mill matches the outer peripheral wall of the vertical coal mill. Both side ends of the support platform and the end away from the vertical coal mill are provided with guardrails. The guardrails are located on the outer peripheral side of the opening path of the manhole door of the vertical coal mill. The support frame is provided at the bottom of the support platform.

2. The vertical coal mill maintenance platform according to claim 1, characterized in that: The bottom of the support frame is provided with universal wheels.

3. The vertical coal mill maintenance platform according to claim 1 or 2, characterized in that: The support platform or the support frame is provided with a chain for detachably connecting to the vertical coal mill, and one end of the chain is fixedly connected to the support platform or the support frame.

4. The vertical coal mill maintenance platform according to claim 1, characterized in that: A ladder is arranged on the support frame, and an opening and closing door is arranged at a position of the guardrail corresponding to the ladder.

5. The vertical coal mill maintenance platform according to claim 4, characterized in that: The support frame is provided with handrails on both sides corresponding to the ladder.

6. The vertical coal mill maintenance platform according to claim 4, characterized in that: The support frame is provided with the ladder at positions corresponding to both side ends of the support platform.

7. The vertical coal mill maintenance platform according to claim 1, characterized in that: The top surface of the support platform is provided with anti-skid patterns or anti-skid pads.

8. The vertical coal mill maintenance platform according to claim 1, characterized in that: The horizontal cross section of the support frame is V-shaped.

9. The vertical coal mill maintenance platform according to claim 8, characterized in that: The support frame is provided with a reinforcing rod, the top end of the reinforcing rod is connected to the V-shaped tip of the top of the support frame, the bottom end is in contact with the ground, the bottom end of the reinforcing rod is spaced apart from the support frame, and the bottom of the reinforcing rod is connected to the support frame through a connecting rod.

10. The vertical coal mill maintenance platform according to claim 1, characterized in that: Both side ends of the support platform and one end away from the vertical coal mill are provided with skirting boards.

Images