Fixing device suitable for coal discharging pipe access door

Abstract

The utility model relates to a fixing device suitable for a coal discharging pipe access door, which comprises an access cover plate buckled at the position of a coal discharging pipe access opening, the two ends of the access cover plate are respectively limited by a group of pressing mechanisms, and each group of pressing mechanisms comprises a mounting frame which is erected above the access cover plate and can be folded towards one side far away from the access opening. And a jacking screw rod for jacking the access cover plate is in threaded connection with the cross beam of the mounting frame. The maintenance cover plate is fixed in a pressing and limiting mode, the maintenance cover plate is convenient to open and close, the situation that the maintenance cover plate cannot be opened cannot occur, the installation frame is designed in a turnover mode, turnover is convenient, and maintenance cannot be interfered on the basis that the fixing requirement is met.

Description

Technical Field

[0001] This utility model relates to a fixing device, and more particularly to a fixing device suitable for a coal mine maintenance door. Background Technology

[0002] Coal mills are one of the essential large-scale equipment in thermal power plants. Inspection doors are installed on the coal feed pipe of the coal mill so that the internal operation of the coal feed pipe can be checked periodically.

[0003] The existing installation method for the coal seam maintenance door is as follows: there are installation holes on both sides of the pipe wall of the maintenance opening, and there are connection holes on the maintenance door that match each installation hole. The installation holes and the corresponding connection holes are connected by bolts and the maintenance door is pressed tight by nuts.

[0004] The existing installation method has the following technical problems during use: because the coal dust in the coal pipe has a certain degree of moisture, the bolts and nuts will rust, making it impossible to open the inspection door normally.

[0005] Based on the above technical problems, the inventor designed a new installation method for fixing inspection doors and proposed a fixing device suitable for inspection doors in coal mine tunnels. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a fixing device suitable for maintenance doors in coal seams.

[0007] This utility model is achieved through the following technical solution: a fixing device suitable for the maintenance door of the lower coal pipe is provided, including a maintenance cover plate that is fastened to the maintenance opening of the lower coal pipe. Both ends of the maintenance cover plate are limited by a set of clamping mechanisms. Each set of clamping mechanisms includes a mounting frame that is mounted above the maintenance cover plate and can be folded away from the maintenance opening. A clamping screw for clamping the maintenance cover plate is threaded onto the crossbeam of the mounting frame.

[0008] Preferably, a clamping plate for contacting the maintenance cover is connected to the lower end of the clamping screw.

[0009] Preferably, a handwheel is fixed to the upper end of the tightening screw to facilitate rotation. When the mounting bracket is erected, rotating the handwheel can raise or lower the tightening plate, and when the tightening plate is lowered, it can press and fix the inspection cover.

[0010] Preferably, the mounting frame includes two uprights, the upper ends of which are connected by a crossbeam. The lower end of each upright is connected to a support leg via a pin. The two support legs are fixedly installed on the outer wall of the lower coal pipe and are located on both sides of the inspection opening. Because the uprights and support legs are connected by pins and are rotatable, the mounting frame can be folded away from the inspection opening. When the inspection cover needs to be opened for maintenance, the mounting frame can be folded to one side to avoid the mounting frame affecting the maintenance operation.

[0011] Preferably, when the tightening screws on the mounting frame need to apply pressure to fix the inspection cover, it is necessary to ensure that the mounting frame is in an upright position. To prevent the mounting frame from folding over at this time, a sleeve is fitted on each support leg. The lower end of the sleeve contacts the outer wall of the coal pipe, and the upper end of the sleeve covers the pin connection between the upright and the support leg. The sleeve's limiting effect prevents the mounting frame from folding over. When the mounting frame needs to fold over, the sleeve is moved upward away from the pin connection, releasing the limiting effect, and the mounting frame can then fold over.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model fixes the inspection cover by pressing and limiting, making the inspection cover easy to open and close and preventing situations where the inspection cover cannot be opened. In addition, the mounting bracket adopts a folding design, which is easy to fold and does not interfere with maintenance while meeting the fixing requirements. Attached Figure Description

[0014] Figure 1 This is a top view of the mounting bracket of this utility model when it is erected.

[0015] Figure 2 This is a top view of the mounting bracket of this utility model when it is folded up;

[0016] Figure 3 This is a left view of the mounting bracket of this utility model when it is erected;

[0017] Figure 4 yes Figure 3 A magnified view of the structure at point A in the middle;

[0018] As shown in the figure:

[0019] 1. Coal lower pipe, 2. Inspection cover plate, 3. Crossbeam, 4. Handwheel, 5. Inspection port, 6. Sleeve, 7. Vertical pole, 8. Tightening screw, 9. Tightening plate, 10. Support leg, 11. Pin. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0021] like Figure 1-4As shown, this utility model includes an inspection cover plate 2 that is fastened to the inspection port 5 of the lower coal pipe. Both ends of the inspection cover plate 2 are limited by a set of clamping mechanisms. Each set of clamping mechanisms includes an mounting frame that is mounted above the inspection cover plate 2 and can be folded away from the inspection port 5. A clamping screw 8 for clamping the inspection cover plate 2 is threadedly connected to the crossbeam 3 of the mounting frame.

[0022] In this embodiment, a clamping plate 9 for contacting the inspection cover 2 is connected to the lower end of the clamping screw 8. Furthermore, to facilitate the rotation of the clamping screw 8, a handwheel 4 is fixed to the upper end of the clamping screw 8. When the mounting bracket is erected, rotating the handwheel 4 can raise or lower the clamping plate 9. When the clamping plate 9 is lowered, it can press and fix the inspection cover 2.

[0023] In this embodiment, the mounting frame includes two uprights 7, the upper ends of which are connected by a crossbeam 3. The lower end of each upright 7 is connected to a support leg 10 via a pin 11. The two support legs 10 are fixedly installed on the outer wall of the lower coal pipe 1 and are located on both sides of the inspection port 5. Since the uprights 7 and the support legs 10 are connected by pins 11 and are rotatable, the mounting frame can be folded away from the inspection port 5. When the inspection cover 2 needs to be opened for maintenance, the mounting frame can be folded to one side to avoid the presence of the mounting frame affecting the maintenance operation.

[0024] In this embodiment, when the tightening screw 8 on the mounting frame needs to apply pressure to fix the inspection cover 2, it is necessary to ensure that the mounting frame is in an upright position. To prevent the mounting frame from folding over at this time, a sleeve 6 is fitted on each support leg 10. The lower end of the sleeve 6 contacts the outer wall of the coal pipe 1, and the upper end of the sleeve 6 covers the pin connection between the upright 7 and the support leg 10. The sleeve 6 can prevent the mounting frame from folding over due to its limiting effect. When the mounting frame needs to fold over, the sleeve 6 is moved upward away from the pin connection, and after the limiting effect is released, the mounting frame can be folded over.

[0025] In practical use, when the inspection cover 2 needs to be pressed and fixed, the mounting brackets on both sides are erected and kept in an upright state by limiting them with the sleeve 6. The handwheel 4 is turned, and the clamping plate 9 descends to press and fix the inspection cover 2. When the inspection cover 2 needs to be opened, the handwheel 4 is turned in the opposite direction, and the clamping plate 9 rises to a certain height and moves away from the inspection cover 2. The sleeve 6 is moved upward to release the limiting position. After that, the mounting bracket is folded away from the inspection port 5, and the inspection cover 2 can be removed for maintenance.

[0026] This utility model fixes the inspection cover 2 by pressing and limiting. The inspection cover 2 is easy to open and close, and there will be no situation where the inspection cover 2 cannot be opened. Moreover, the mounting bracket adopts a folding design, which is easy to fold and will not interfere with the maintenance while meeting the fixing requirements.

[0027] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A fixing device suitable for a coal seam maintenance door, characterized in that: The utility model relates to a coal pipe maintenance cover plate locking mechanism, which comprises a maintenance cover plate locked at a lower coal pipe maintenance opening, two ends of the maintenance cover plate are respectively limited by a set of pressing mechanism, each set of pressing mechanism comprises a mounting frame erected above the maintenance cover plate and capable of being folded away from the maintenance opening side, a jacking screw for jacking the maintenance cover plate is screw-connected on the crossbeam of the mounting frame.

2. A fixing device for a coal pipe access door according to claim 1, characterised in that: A jacking disc for contacting the maintenance cover plate is connected to the lower end of the jacking screw.

3. A fixing device for a coal pipe access door according to claim 2, wherein: A hand wheel is fixed to the upper end of the jacking screw.

4. The fixing device for the access door of the coal pipe according to claim 1, characterized in that: The mounting frame comprises two vertical rods, the upper ends of the two vertical rods are connected by a crossbeam, the lower end of each vertical rod is connected to a supporting leg through a pin shaft, and the two supporting legs are fixedly installed on the outer wall of the lower coal pipe and are respectively located on the two sides of the maintenance opening.

5. A fixing device for a coal pipe access door according to claim 4, wherein: A sleeve is sleeved on each supporting leg, the lower end of the sleeve is in contact with the outer wall of the lower coal pipe, and the pin shaft connection position of the vertical rod and the supporting leg is covered by the upper end of the sleeve.

Images