Safe and labor-saving cover plate with external power

Abstract

The utility model relates to a safe and labor-saving cover plate with external power, which can effectively solve the problems of no power supply on site, larger effective opening occupied by the cover plate, complicated structure and higher failure rate, and adopts the technical scheme that the safe and labor-saving cover plate comprises bottom plates, a frame plate and rotating shaft mechanisms, and the front and rear end parts of the frame plate are symmetrically provided with the bottom plates through a plurality of rotating shaft mechanisms; the rotating shaft mechanism is composed of a rotating shaft, a hinge support and a positioning plate, the hinge support is installed on the frame plate, the rotating shaft is installed on the hinge support and fixed to the positioning plate in a penetrating mode, the positioning plate is fixed to the bottom plate, and the transmission device is installed on the inner side of the bottom plate. Torque and bearing capacity are increased through multi-stage speed change, work is reliable, operation is convenient and safe, the problem that a cover plate without a fixed power source is opened on a working site is solved, practicability is high, the application range is wide, the lifting hole cover plate is an innovation, and remarkable social and economic benefits are achieved.

Description

Technical Field

[0001] The utility model relates to a cover plate, in particular to an externally powered safety and labor-saving type cover plate. Background Art

[0002] At present, the structures of safety and labor-saving type cover plates are mostly mechanical and electric mechanisms. Although the mechanical mechanism is firm and reliable and does not require daily maintenance, its structure is complex, with many spare parts, and it occupies a relatively large effective opening area of the lifting hole; the cover plate structure of the electric mechanism is complex and has a high failure rate; it not only affects the work efficiency but also invisibly increases the maintenance cost. Then, for the cover plates in a relatively harsh on-site environment, without power supply and with relatively high requirements for the effective opening of the lifting hole, how to improve and innovate the structure of the existing type of cover plate to meet the existing needs is a technical problem that urgently needs to be solved. Summary of the Invention

[0003] In view of the above situation, to solve the defects of the existing technology, the purpose of the utility model is to provide an externally powered safety and labor-saving type cover plate, which can effectively solve the problems of no power supply on-site, large occupation of the effective opening by the cover plate, and relatively high failure rate due to complex structure.

[0004] The technical solution solved by the utility model is that it includes a bottom plate, a frame plate and a rotating shaft mechanism. The front and rear ends of the frame plate are symmetrically equipped with a bottom plate through a plurality of rotating shaft mechanisms. The rotating shaft mechanism is composed of a rotating shaft, a hinge bracket and a positioning plate. A hinge bracket is installed on the frame plate, a rotating shaft is installed on the hinge bracket, the rotating shaft is fixedly installed through the positioning plate, and the positioning plate is fixed on the bottom plate. A transmission device is installed inside the bottom plate.

[0005] The structure of the utility model is compact and reasonable, with high and stable transmission efficiency; it increases the torque through multi-stage speed change, enhances the bearing capacity, is reliable in operation, convenient and safe to operate, solves the problem of opening the cover plate without a fixed power supply at the work site, has strong practicability and a wide application range, is an innovation in the cover plate of the lifting hole, and has significant social and economic benefits. Brief Description of the Drawings

[0006] Figure 1 It is the main structural view of the utility model.

[0007] Figure 2 For the utility model Figure 1 is the side structural view.

[0008] Figure 3 For the utility model Figure 1 is the partial enlarged structural schematic diagram. Detailed Description of the Invention

[0009] The following further details the specific implementation manners of the utility model with reference to the drawings.

[0010] Consisting ofFigures 1-3 Given that, the utility model includes a bottom plate, a frame plate and a rotating shaft mechanism. At the front and rear ends of the frame plate 15, two bottom plates 14 are symmetrically installed via a plurality of rotating shaft mechanisms 17. The rotating shaft mechanism 17 is composed of a rotating shaft 11, a hinge bracket 12 and a positioning plate 10. The hinge bracket 12 is installed on the frame plate 15, the rotating shaft 11 is installed on the hinge bracket 12, the rotating shaft 11 is fixedly installed through the positioning plate 10, and the positioning plate 10 is fixed on the bottom plate 14. A transmission device is installed inside the bottom plate 14.

[0011] To ensure the use effect, the transmission device includes a driving shaft 2, a driven shaft 5, a speed reducer 8, a universal spline transmission shaft 9 and a mechanical push rod assembly 13. The driving shaft 2 is connected to an external power head 1 fixed on the bottom plate 14 via a bearing. A driving bevel gear 3 is installed on the driving shaft 2, and the driving bevel gear 3 meshes with a driven bevel gear 4 at one end of the driven shaft 5. A small spur gear 6 is installed at the other end of the driven shaft 5. A large spur gear 7 meshing with the small spur gear 6 is installed on the speed reducer shaft 16 of the speed reducer 8. The speed reducer 8 is connected to the mechanical push rod assembly 13 via the universal spline transmission shaft 9. The other end of the mechanical push rod assembly 13 is fixed on the inner side wall of the hoisting opening.

[0012] The speed reducer 8 is installed at the middle position of the lower part inside the bottom plate 14.

[0013] The mechanical push rod assembly 13 is installed at both ends of the lower part inside the bottom plate 14.

[0014] The two bottom plates 14 have the same size and structure, and the sum of the two matches the size of the hoisting opening.

[0015] The connection points of the speed reducer 8, the universal spline transmission shaft 9 and the mechanical push rod assembly 13 are on the same central axis.

[0016] The bottom plate 14 is rectangular, and a horizontal fixing frame 18 is provided in the middle upper part. A first longitudinal support frame 19 for fixing the external power head 1 is provided in the middle of the horizontal fixing frame 18. A through hole 20 for the external power head 1 to pass through is provided at the center of the first longitudinal support frame 19.

[0017] In the description of the present utility model, it should be noted that when terms such as "middle", "inner side", "front and back", "end part", "lower part" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] The usage situation of the present utility model is that the safe and labor-saving cover plate is composed of a bottom plate, a frame plate, a rotating shaft mechanism and a transmission device. The bottom plates are symmetrically installed on the frame plate through a plurality of rotating shaft mechanisms. The rotating shaft mechanism can open or close the cover plate under the action of the transmission device. The transmission device includes a driving shaft, a driven shaft, a reducer, a universal spline transmission shaft and a mechanical push rod assembly. A bearing and a driving bevel gear are installed on the driving shaft. Small straight gears and driven bevel gears meshing with the driving bevel gear are respectively installed at both ends of the driven shaft. A large straight gear meshing with the small straight gear is installed on the reducer. The reducer is installed at the middle position inside the lower part of the bottom plate. The mechanical push rod assemblies are respectively installed at both ends inside the lower part of the bottom plate.

[0019] The working principle is that the present utility model is installed on the hoisting hole opening. When it is necessary to open or close the hoisting hole opening, the external power supply transmits the power to the driving shaft and the driving bevel gear through the external power head. The driving bevel gear drives the driven bevel gear and the driven shaft through gear meshing to change the direction of force. The small straight gear on the driven shaft meshes with the large straight gear to transmit the power to the reducer. The reducer transmits the power to the two universal joints respectively through the internal mechanism. The universal joints drive the spline shaft to finally deliver the power to the mechanical push rod. The opening and closing of the mechanical push rod drive the rotating mechanism to realize the opening and closing of the cover plate.

[0020] The structure of the present utility model is compact and reasonable, with high and stable transmission efficiency; it increases the torque through multi-stage speed change, enhances the bearing capacity, is reliable in work, convenient and safe to operate, solves the problem of no fixed power supply at the work site, and is convenient to realize the opening of the hoisting hole cover plate. It has a wide application range, is an innovation on the hoisting hole cover plate, and has good economic and social benefits.

[0021] It should be pointed out that the above is only the preferred embodiment of the present utility model, and does not impose any form of limitation on the present utility model. Any person skilled in the relevant art can, without departing from the technical solution scope of the present utility model, make changes or modifications to equivalent embodiments with equivalent changes by using the disclosed technical content, and all fall within the protection scope of the present utility model.

Claims

1. An externally powered safe and labor-saving cover plate, comprising a bottom plate, a frame plate and a rotating shaft mechanism, characterized in that, The front and rear ends of the frame plate (15) are symmetrically equipped with two bottom plates (14) through a plurality of rotating shaft mechanisms (17). The rotating shaft mechanism (17) is composed of a rotating shaft (11), a hinge bracket (12) and a positioning plate (10). The hinge bracket (12) is installed on the frame plate (15), the rotating shaft (11) is installed on the hinge bracket (12), the rotating shaft (11) is fixedly installed through the positioning plate (10), the positioning plate (10) is fixed on the bottom plate (14), and a transmission device is installed inside the bottom plate (14).

2. The externally powered safety and labor-saving type cover plate according to claim 1, characterized in that, The transmission device includes a driving shaft (2), a driven shaft (5), a reducer (8), a universal spline transmission shaft (9) and a mechanical push rod assembly (13). The driving shaft (2) is connected to an external power head (1) fixed on the bottom plate (14) through a bearing. A driving bevel gear (3) is installed on the driving shaft (2), and the driving bevel gear (3) meshes with a driven bevel gear (4) at one end of the driven shaft (5). A small spur gear (6) is installed at the other end of the driven shaft (5). A large spur gear (7) meshing with the small spur gear (6) is installed on the reducer shaft (16) of the reducer (8). The reducer (8) is connected to the mechanical push rod assembly (13) through the universal spline transmission shaft (9). The other end of the mechanical push rod assembly (13) is fixed on the inner side wall of the hoisting hole opening.

3. The externally-powered safety and labor-saving type cover plate according to claim 2, characterized in that, The reducer (8) is installed at the middle position of the inner lower part of the bottom plate (14).

4. The externally-powered safety and labor-saving cover plate according to claim 2, characterized in that, The mechanical push rod assembly (13) is installed at both ends of the inner lower part of the bottom plate (14).

5. The externally powered safe and labor-saving cover plate according to claim 1, wherein The two bottom plates (14) have the same size and structure, and the sum of the two matches the size of the hoisting hole opening.

6. The externally powered safety and labor-saving type cover plate according to claim 1, characterized in that, The connection points of the reducer (8), the universal spline transmission shaft (9) and the mechanical push rod assembly (13) are on the same central axis.

7. The externally powered safe and labor-saving cover plate according to claim 1, characterized in that, The bottom plate (14) is rectangular, and a transverse fixing frame (18) is arranged in the middle and upper part. A first longitudinal support frame (19) for fixing the external power head (1) is arranged in the middle of the transverse fixing frame (18), and a through hole (20) for the external power head (1) to pass through is arranged at the center of the first longitudinal support frame (19).

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