Novel rapid hoisting device for hydropower station gate storage groove concrete cover plate

Abstract

The utility model discloses a novel hydropower station gate storage groove concrete cover plate and a rapid hoisting device, and belongs to the field of hydropower station gate groove cover plate opening and closing, the cover plate comprises a cover plate body and an embedded steel plate arranged on the top surface of the cover plate body in an embedded mode, and the surface of the embedded steel plate is flush with the top surface of the cover plate body; the rapid lifting device comprises a power mechanism and an electromagnetic lifting appliance connected to the power output end of the power mechanism, and the electromagnetic lifting appliance is matched with the embedded steel plate for lifting after being powered on. According to the novel hydropower station door storage groove concrete cover plate and the rapid hoisting device, the flat embedded type pre-embedded steel plate is designed on the surface of the cover plate to be matched with the special magnetic hoisting tool, efficient and safe hoisting of the concrete cover plate is achieved, additional manual operation is not needed, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of opening and closing of gate slot cover plates of hydropower stations, in particular to a novel rapid lifting device for concrete cover plates of storage gate slots of hydropower stations. Background Art

[0002] Existing hydropower station dams have requirements for bearing capacity, so the dam surface gate slot cover plates are mostly made of reinforced concrete structures. To ensure the flatness of the dam surface, existing concrete cover plates mostly use round steel lifting lugs sunk into the cover plate's embedded holes. For example, the concrete cover plate in the publication number CN218712680U, published on March 24, 2023, and titled "A Concrete Protective Device for Gate Slot Cover Plates for Hydropower Station Maintenance" has four mounting slots on the top of its outer wall. The bottom of the inner wall of each mounting slot is fixed with a mounting ring, and the inner wall of each mounting ring is installed with a hook, which facilitates the lifting of the concrete cover plate.

[0003] However, when opening and closing the concrete cover slab with this structure, the round steel lifting lugs must be manually pulled out from the upper surface of the cover slab and then manually hung with ropes. This method is extremely inefficient, and because the pre-buried holes for the round steel lifting lugs are exposed on the surface, mud and water often accumulate in the holes, making it difficult to pull out the round steel lifting lugs.

[0004] Therefore, it is urgent to design a hydropower station storage gate trough concrete cover and a matching rapid lifting device to achieve efficient and safe lifting of the dam surface concrete cover and alleviate the current low opening and closing efficiency of the dam surface concrete cover. Utility Model Content

[0005] The utility model aims to solve the problem of unreasonable structural design of the dam surface concrete cover in the prior art, which leads to low opening and closing efficiency. A new type of rapid lifting device for the concrete cover of the storage gate trough of a hydropower station is proposed, which realizes the rapid opening and closing of the concrete cover through reasonable structural design.

[0006] In order to achieve the above-mentioned utility model purpose, the technical solution of the utility model is as follows:

[0007] A novel rapid lifting device for a concrete cover plate of a storage gate trough of a hydropower station is characterized in that the cover plate includes a cover plate body and an embedded steel plate embedded in the top surface of the cover plate body, and the surface of the embedded steel plate is flush with the top surface of the cover plate body; the rapid lifting device includes a power mechanism and an electromagnetic lifter connected to the power output end of the power mechanism, and the electromagnetic lifter cooperates with the embedded steel plate for lifting after being energized.

[0008] Furthermore, the power mechanism is a lifting cylinder, and the electromagnetic sling is connected to the telescopic rod of the lifting cylinder, and moves synchronously with the telescopic rod under the drive of the lifting cylinder.

[0009] Furthermore, the electromagnetic spreader is rotatably connected to the end of the telescopic rod, and the size and shape of the end face of the electromagnetic spreader matches the size and shape of the embedded steel plate.

[0010] Furthermore, the number of the embedded steel plates is two, and the two embedded steel plates are symmetrically arranged at both ends of the cover plate body in the length direction.

[0011] Furthermore, a connecting screw is provided at the bottom of the embedded steel plate, and the bottom of the connecting screw passes through the cover plate body and is connected to the connecting standard part to fix the embedded steel plate on the cover plate body.

[0012] Furthermore, a base is provided at the bottom of the cover body corresponding to where the connecting screw protrudes from the cover body, and the surface of the base is flush with the horizontal plane.

[0013] Furthermore, the electromagnetic sling is rotatably connected to the end of the telescopic rod through a connecting ear and a latch.

[0014] In summary, the utility model has the following advantages:

[0015] 1. This utility model proposes a new type of rapid lifting device for the concrete cover plate of the storage gate trough of a hydropower station. By designing a flat embedded pre-embedded steel plate on the surface of the cover plate and cooperating with a special magnetic lifting device, the concrete cover plate can be lifted efficiently and safely without the need for additional manual operation, thus reducing the labor intensity.

[0016] 2. The new concrete cover plate in this utility model cancels the original round steel lifting lugs and uses flat embedded steel plates instead. The surface of the cover plate is smooth and will not affect the normal passage of people and vehicles.

[0017] 3. The new concrete cover plate in the present invention has pre-buried steel plates fixed by connecting screws penetrating the cover plate and matching standard connecting parts, which is low in cost and easy to manufacture;

[0018] 4. The utility model is provided with a base at the bottom of the cover corresponding to the fixing position of the connecting screw to facilitate the stacking of the cover;

[0019] 5. In the present invention, the electromagnetic spreader is rotatably connected to the end of the telescopic rod through the connecting ear and the latch, which facilitates the adaptive adjustment of the electromagnetic spreader and makes lifting more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the new concrete cover plate in the present utility model;

[0021] Figure 2 for Figure 1 A-direction sectional view;

[0022] Figure 3 This is a structural diagram of the special magnetic lifter of the utility model;

[0023] Figure 4 This is a schematic diagram of the connection between the special magnetic hanger of the utility model and the new concrete cover plate;

[0024] In the picture:

[0025] 1. Cover plate body, 2. Embedded steel plate, 3. Base, 5. Connecting screws, 6. Connecting standard parts, 7. Lifting cylinder, 8. Electromagnetic spreader, 9. Steel mesh, 10. Concrete, 11. Angle steel frame. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments described are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0027] It should also be pointed out that in the description of the present invention, the terms "upright", "inverted", "horizontal", "vertical", "up", "down", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] The utility model proposes a novel rapid lifting device for the concrete cover plate of the storage gate trough of a hydropower station, which adopts a flat embedded pre-buried steel plate as a lifting lug for opening and closing the cover plate, and realizes the connection between the lifting device and the cover plate through a special magnetic lifting device in conjunction with the flat embedded steel plate on the concrete cover plate, so as to realize efficient and safe lifting of the concrete cover plate.

[0029] like Figure 1 The diagram shows the structure of the cover plate in this embodiment, which includes a cover plate body 1 and an embedded steel plate 2 embedded in the top surface of the cover plate body 1. In this embodiment, the cover plate body 1 is a rectangular concrete cover plate cast from concrete 10 and steel mesh 9. Angle steel frames 11 are provided at the edges of the cover plate body 1. The surface of the embedded steel plate 2 is flush with the top surface of the cover plate body 1.

[0030] In this embodiment, Figure 2 As shown, a connecting screw 5 is provided at the bottom of the embedded steel plate 2. One end of the connecting screw 5 is connected to the back of the embedded steel plate 2, and the other end passes through the bottom surface of the cover body 1. The embedded steel plate 2 is fixed to the cover body 1 through the connecting standard part 6.

[0031] Furthermore, a base 3 is provided at the bottom of the cover body 1 corresponding to the portion where the connecting screw 5 protrudes from the bottom surface of the cover body 1. The design of the base can ensure that the bottom of the cover body 1 remains flat, which is convenient for stacking.

[0032] In this embodiment, the special magnetic lifting device structure is as follows Figure 3 As shown, the dedicated magnetic lifter includes a power mechanism and an electromagnetic lifter 8 connected to the power output of the power mechanism. When energized, the electromagnetic lifter 8 cooperates with the embedded steel plate to lift the steel plate. In this embodiment, the power mechanism is a lifting cylinder 7. The electromagnetic lifter 8 is connected to the telescopic rod of the lifting cylinder 7 and moves synchronously with the telescopic rod under the drive of the lifting cylinder 7.

[0033] Furthermore, in this embodiment, the electromagnetic spreader 8 is rotatably connected to the end of the telescopic rod via a connecting lug and a latch. This facilitates adaptive adjustment of the electromagnetic spreader, allowing it to better match the plane of the embedded steel plate 2. The embedded steel plate 2 and the end surface of the electromagnetic spreader 8 are compatible in size and shape, and both are flat.

[0034] The connection diagram of the special magnetic hanger and the new concrete cover is as follows Figure 4 When lifting, the electromagnetic lifting device 8 is connected with the embedded steel plate 2 on the cover plate, and the cover plate is lifted by the adsorption force of the electromagnetic lifting device 8 after power is turned on.

[0035] The new concrete cover plate eliminates the round steel lifting lugs used for lifting and instead utilizes a flush-mounted steel plate. This creates a smooth surface that does not interfere with the normal flow of people and vehicles. Furthermore, the flush-mounted steel plate is lifted with a dedicated magnetic lifting device, eliminating the need for manual operation and enabling efficient and safe installation of the dam surface concrete cover plate.

[0036] The feasibility of this solution is illustrated by a specific calculation below:

[0037] For example, the concrete cover slab for a power station's maintenance garage weighs 7 tons and is equipped with two lifting points coordinated by electromagnetic lifters. The friction coefficient between the concrete and the concrete is 0.8. Considering both mechanical efficiency and design redundancy, the lifting cylinders are designed for a rated lifting capacity of 14 tons.

[0038] According to the existing magnetic lifter, the rated suction force is 5kg / cm 2 , pull-off force 16kg / cm 2 The minimum effective contact area of ​​a single electromagnetic spreader is designed based on the parameters:

[0039] ;

[0040] The electromagnetic lifting device is arranged with a 200mm×700mm rectangular end surface, with two pieces arranged symmetrically. The pull-out force of the lifting mechanism is:

[0041] 20×70×2×16=44800kg=44.8t;

[0042] Safety factor: ;

[0043] The safety factor meets the relevant requirements of the "General Technical Conditions for Lifting Electromagnets" (GB / T 33545-2017), and the electromagnetic spreader is safe and reliable.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention falls within the scope of protection of the present invention.

Claims

1. A new type of rapid lifting device for the concrete cover of the storage gate trough of a hydropower station, characterized by: The cover plate comprises a cover plate body (1) and an embedded steel plate (2) embedded in the top surface of the cover plate body (1), wherein the surface of the embedded steel plate (2) is flush with the top surface of the cover plate body (1); the rapid lifting device comprises a power mechanism and an electromagnetic lifting device (8) connected to the power output end of the power mechanism, wherein the electromagnetic lifting device (8) cooperates with the embedded steel plate (2) for lifting after being energized.

2. A novel rapid lifting device for a concrete cover plate of a hydropower station storage gate trough as claimed in claim 1, characterized in that: The power mechanism is a lifting cylinder (7), and the electromagnetic sling (8) is connected to the telescopic rod of the lifting cylinder (7) and moves synchronously with the telescopic rod under the drive of the lifting cylinder (7).

3. A novel rapid lifting device for a concrete cover plate of a hydropower station storage gate trough as claimed in claim 2, characterized in that: The electromagnetic hanger (8) is rotatably connected to the end of the telescopic rod, and the size and shape of the end face of the electromagnetic hanger (8) matches the size and shape of the embedded steel plate (2).

4. A novel rapid lifting device for a concrete cover plate of a hydropower station storage gate trough as claimed in claim 1, characterized in that: The number of the embedded steel plates (2) is two, and the two embedded steel plates (2) are symmetrically arranged at both ends of the cover plate body (1) in the length direction.

5. A novel rapid lifting device for a concrete cover plate of a hydropower station storage gate trough as claimed in claim 1 or 4, characterized in that: A connecting screw (5) is provided at the bottom of the embedded steel plate (2), and the bottom of the connecting screw (5) passes through the cover plate body (1) and is connected to the connecting standard part (6), thereby fixing the embedded steel plate (2) on the cover plate body (1).

6. A novel rapid lifting device for a concrete cover plate of a hydropower station storage gate trough as claimed in claim 5, characterized in that: A base (3) is provided at the bottom of the cover body (1) corresponding to the connecting screw (5) protruding from the cover body (1), and the surface of the base (3) is flush with the horizontal plane.

7. A novel rapid lifting device for a concrete cover plate of a hydropower station storage gate trough as claimed in claim 3, characterized in that: The electromagnetic hanger (8) is rotatably connected to the end of the telescopic rod via a connecting ear and a latch.

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