Manhole cover plate

Abstract

The utility model relates to a manhole cover plate, which can effectively solve the problem that a maintainer is unsafe to enter a manhole, and adopts the technical scheme that one side of a cover plate panel is connected with a first hinge seat arranged on the side wall of a manhole cover plate framework on one side through a door shaft, and the opposite side of the cover plate panel is connected with a first connecting rod through a second hinge seat; the first connecting rod is connected with the second connecting rod through a locking device, the second connecting rod is connected with a third hinge base arranged on the side wall of the manhole cover plate framework on the opposite side, and a handle is arranged on the outer side of the cover plate panel. A maintainer only needs to open the cover plate, operate the locking device and the access hole and then operate the locking device, the cover plate is closed through the handrail, and the maintainer only needs to operate on the contrary when going out, so that the working efficiency of the maintainer is greatly improved, and the access hole cover plate is an innovation of access hole cover plates.

Description

Technical Field

[0001] This utility model relates to the field of hoisting port construction technology, and in particular to an access inspection hole cover. Background Technology

[0002] In the hydropower station hoisting manhole cover project, in order to facilitate maintenance personnel to inspect equipment, there are access manholes for the operation corridor. Currently, temporary fences are generally set up at the access manholes to ensure the safety of construction personnel. When the equipment needs to be inspected, the temporary fences at the access manholes are hoisted in, which greatly increases the workload of construction personnel, reduces the work efficiency of maintenance personnel, and cannot fully guarantee the safety of personnel during inspections, greatly increasing safety hazards. Therefore, it is imperative to invent a new type of access manhole cover. Summary of the Invention

[0003] In view of the above situation and to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an access inspection hole cover plate, which can effectively solve the problem of unsafe access for maintenance personnel to enter the hole.

[0004] The technical solution provided by this utility model includes a cover panel, a hinge seat, a connecting rod, and a locking device. One side of the cover panel is connected to a first hinge seat located on the side wall of the access hole cover frame via a door hinge. The opposite side of the cover panel is connected to a first connecting rod via a second hinge seat. The first connecting rod is connected to a second connecting rod via a locking device. The second connecting rod is connected to a third hinge seat located on the side wall of the access hole cover frame. A handle is provided on the outer side of the cover panel.

[0005] This utility model has a novel structure and reasonable design. When the equipment needs to be repaired, there is no need to lift the cover plate and set up a temporary fence. The repair personnel only need to open the cover plate, operate the locking device, enter the hole, operate the locking device, and use the handrail to close the cover plate. When the repair personnel leave, they can operate the opposite operation. This greatly improves the work efficiency of the repair personnel and ensures the safety of the staff during inspection. It is an innovation in the design of the access cover plate for the maintenance hole. Attached Figure Description

[0006] Figure 1 This is the main structural view of the present invention.

[0007] Figure 2 This is a side view of the structure of this utility model.

[0008] Figure 3 This is a schematic diagram of the inner structure of the cover plate panel of this utility model. Detailed Implementation

[0009] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0010] Depend on Figure 1-3 The present invention includes a cover panel, a hinge seat, a connecting rod, and a locking device. One side of the cover panel 1 is connected to a first hinge seat 2 provided on the side wall of the access hole cover frame 9 via a door hinge 2-1. The opposite side of the cover panel 1 is connected to a first connecting rod 4 via a second hinge seat 3. The first connecting rod 4 is connected to a second connecting rod 6 via a locking device 5. The second connecting rod 6 is connected to a third hinge seat 7 provided on the side wall of the access hole cover frame 9. A handle 8 is provided on the outer side of the cover panel 1.

[0011] To ensure effectiveness, the cover panel 1 is a square made of metal with dimensions of 800mm × 800mm.

[0012] The locking device 5 is a pin.

[0013] The hinge base is made of metal, which has high strength and durability.

[0014] The handle 8 is fixed to the cover plate panel 1 by bolts or welding.

[0015] The handle 8 is located on the opening / closing side of the cover panel 1.

[0016] A handrail 10 is provided on the inner side of the cover panel 1.

[0017] The handrail 10 is located on the opening / closing side of the cover panel 1.

[0018] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0019] In this utility model, the first connecting rod 4 is mounted on the cover panel 1, and the second connecting rod 6 is mounted on the cover frame 9. The manhole cover is designed to be 800mm × 800mm. One side of the cover panel 1 is connected to the first hinge seat 2 mounted on the side wall of the cover frame 9, and the other side is connected to the first connecting rod 4. The first connecting rod 4 is connected to the second connecting rod 6 via a locking device 5. The second connecting rod 6 is connected to the third hinge seat 7 mounted on the opposite side wall of the cover frame 9. A door hinge connects the cover panel 1 and the cover frame 9 for the rotation of the cover panel 1. The hinge seats are respectively mounted on the side wall of the cover frame 9 and on the cover panel 1 to connect the cover panel 1 and the connecting rods, allowing the cover to rotate. The cover panel 1 can be opened and closed. The hinge seat provides a fulcrum for rotation. The connecting rod and locking device ensure the stability and safety of the cover panel during use. A handle 8 is provided on the outside of the cover panel 1 for easy operation of opening and closing. The connection relationship between these components ensures the stability and functionality of the entire structure. When it is necessary to enter the hole, the worker uses the handle to pull up the cover panel 1 and rotates it open with the door hinge. The locking device locks the connecting rod to prevent the door from opening accidentally after closing. The worker uses the handrail 10 to enter the hole and pull out the locking device to close the cover panel 1. When the worker exits the hole, the handrail 10 is used to open the door and the locking device is pulled out to close the cover panel 1.

[0020] This utility model features a novel structure, reasonable design, and simple operation. When equipment needs maintenance, there is no need to remove the cover plate or set up a temporary fence. Maintenance personnel simply need to open the cover plate, operate the locking device, enter the hole, operate the locking device again, and close the cover plate using the handrail. When maintenance personnel leave, they can simply operate the same method. This greatly improves the work efficiency of maintenance personnel and ensures the safety of staff during inspections. It is an innovation in accessing maintenance hole covers and has good economic and social benefits.

[0021] It should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any person skilled in the art who can make modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution shall fall within the protection scope of the present utility model.

Claims

1. A manhole cover, characterized in that, It includes a cover panel, a hinge seat, a connecting rod and a locking device. One side of the cover panel (1) is connected to the first hinge seat (2) on the side wall of the access hole cover frame (9) via a door hinge (2-1). The opposite side of the cover panel (1) is connected to the first connecting rod (4) via a second hinge seat (3). The first connecting rod (4) is connected to the second connecting rod (6) via a locking device (5). The second connecting rod (6) is connected to the third hinge seat (7) on the side wall of the access hole cover frame (9) on the opposite side. A handle (8) is provided on the outside of the cover panel (1).

2. The access inspection hole cover according to claim 1, characterized in that, The cover panel (1) is a square made of metal with a size of 800mm×800mm.

3. The access inspection hole cover according to claim 1, characterized in that, The locking device (5) is a pin.

4. The access inspection hole cover according to claim 1, characterized in that, The hinge base is made of metal.

5. The access inspection hole cover according to claim 1, characterized in that, The handle (8) is fixed to the cover plate panel (1) by bolts or welding.

6. The access inspection hole cover according to claim 1, characterized in that, The handle (8) is located on the opening / closing side of the cover panel (1).

7. The access inspection hole cover according to claim 1, characterized in that, The cover panel (1) is provided with a handrail (10) on the inner side.

8. The access inspection hole cover according to claim 7, characterized in that, The handrail (10) is located on the opening / closing side of the cover panel (1).

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