Simple buoyancy tank stoplog type access door for water conservancy facility maintenance
The design of the simple floating box stacked beam maintenance door solves the problem of the unsuitability of maintenance devices for small hydropower facilities, and achieves rapid installation and efficient sealing, thereby reducing costs and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YONGQIANG WATER CONSERVANCY EQUIP CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-26
AI Technical Summary
Existing maintenance equipment is not suitable for small hydropower facilities and suffers from problems such as complex installation, poor stability, and difficult maintenance.
A simple floating box stacked beam inspection door was designed, which adopts a pluggable floating box structure and is equipped with positioning pins, positioning sleeves, water-stop components and limit plates to achieve rapid installation and sealing effect.
It features a simple structure, low cost, convenient installation, adaptability to various environments, and improved maintenance efficiency.
Smart Images

Figure CN224281186U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water conservancy facilities, specifically a simple floating box stacked beam inspection gate for the maintenance of water conservancy facilities. Background Technology
[0002] Currently, the maintenance of water conservancy gates and other facilities in China is basically carried out using simple steel stacked beam maintenance gates, floating box stacked beam gates, and heavy floating pontoon maintenance gates. These are used to build a movable cofferdam to block the water outside and pump out the water inside the cofferdam, providing a water-free site for construction and maintenance.
[0003] Using this type of stacked beam maintenance gate and floating box stacked beam gate as a movable cofferdam requires the use of large lifting equipment, such as truck cranes and special gantry cranes, during the hoisting process. As for the floating barrel maintenance gate, although it can float in the water and is easy to tow and position, it requires complex water supply and pumping devices to complete the submersion and surfacing processes. Due to its large size and heavy weight, the floating barrel maintenance gate is easily affected by wind, waves and water levels, and has poor stability in the water. It also requires a dedicated berth and personnel to guard it. In addition, because it is too bulky, it can only be submerged in water all year round, making it impossible to maintain and repair it.
[0004] However, my country still has a large number of small hydropower facilities, and the aforementioned maintenance devices used as movable cofferdams are all designed for the maintenance of large hydraulic gates such as ship locks. There is an urgent market need for a floating box-type maintenance gate for small hydropower facilities that is simple in structure, easy to install and construct, and allows for flexible assembly and adjustment of the gate length according to site conditions. Utility Model Content
[0005] This utility model aims to overcome the shortcomings of the existing technology by providing a simple floating box stacked beam inspection gate for the maintenance of water conservancy facilities.
[0006] This application provides the following technical solution:
[0007] A simple floating box stacked beam maintenance gate for water conservancy facility maintenance is characterized in that: it includes a set of floating boxes that can be inserted together longitudinally, a set of positioning pins and a set of positioning sleeves on the floating boxes, a water-stopping component on the front of the floating boxes, a first pad plate that cooperates with the water-stopping component and the first pad plate on the floating boxes, a set of limiting plates on the back of the floating boxes, and a sliding plate on the floating boxes outside the limiting plates.
[0008] Based on the above technical solutions, the following further technical solutions are also possible:
[0009] The water-stopping assembly includes a first water-stopping rubber connected to a first pressure plate, and a second water-stopping rubber connected to the side walls of the floats at both ends of the first water-stopping rubber via a second pressure plate.
[0010] The second waterproof rubber is L-shaped.
[0011] The limiting plate is L-shaped.
[0012] The first pad extends a certain distance from the pontoon and corresponds to the thickness end face of the water-stopping component.
[0013] The pontoon has a positioning pin and a positioning sleeve at each end, and the positioning pin and positioning sleeve on the same side are coaxially distributed.
[0014] Each of the floating boxes is connected to a lifting ring end cap screw.
[0015] Advantages of the utility model:
[0016] The float box in this utility model is a hollow square tube sealed at both ends, which makes the overall structure of the maintenance door simple, easy to manufacture, and low in overall cost. It is also easy to assemble during use, adaptable to different working environments, shortens the overall installation time of the maintenance door and improves efficiency. Attached Figure Description
[0017] Figure 1 This is a front view of the utility model;
[0018] Figure 2 This is a side view of the present invention;
[0019] Figure 3 This is a schematic diagram of the practical tool inserted into the gate slot of the water channel maintenance gate. Detailed Implementation
[0020] like Figure 1-3 As shown, a simple floating box stacked beam maintenance gate for water conservancy facilities includes a set of floating boxes 1 that can be inserted together longitudinally. The floating box 1 is a metal square tube structure sealed at both ends. A lifting ring end cap screw 14 is installed at the midpoint of the top surface of the floating box. A lifting ring (not shown in the figure) is detachably connected to the lifting ring end cap screw 14.
[0021] A positioning pin 4 and a positioning sleeve 3 are connected at both ends of the rectangular body, and the positioning pin 4 and positioning sleeve 3 on the same side are coaxially distributed.
[0022] A water-stop component a is installed on the front of the pontoon 1. The water-stop component a includes a first water-stop rubber 10 connected to the pontoon 1 by a first pressure plate 11 and a set of connecting screws, and an L-shaped second water-stop rubber 12 connected to the side wall of the pontoon 1 at both ends of the first water-stop rubber 10 by a second pressure plate 13 and connecting screws.
[0023] A long strip-shaped first pad 6 is installed on one side of the top of the float box 1. A portion of the first pad 6 extends outward toward the front of the float box 1, so that a portion of the first pad 6 presses against the top of the water-stopping component a. The lengths of the first water-stopping rubber 10 and the second water-stopping rubber 12 are slightly longer than the height of the float box 1, that is, the lower parts of the first water-stopping rubber 10 and the second water-stopping rubber 12 extend a certain distance beyond the bottom surface of the float box 1.
[0024] A pair of L-shaped limiting plates 9 are connected to the two ends of the back of the float box 1, and a sliding plate 15 is connected to the back of the float box 1 on the outside of each limiting plate 9.
[0025] A second pad 5 is installed on the other side of the top of the float 1. The second pad 5 and the first pad 6 have the same thickness, so that the head of the lifting ring screw 14 is located below the upper surface of the second pad 5 and the first pad 6.
[0026] How to use:
[0027] On the water channel on one side of the hydraulic gate requiring maintenance, there is a gate slot 16 corresponding to the float 1. Then, the float 1 is lifted and inserted into the gate slot 16 one by one using the lifting ring on the lifting ring end screw. At this time, the sliding plate 15 contacts the gate slot 16 to ensure smooth insertion, while the limiting plate 9 limits the gate slot 16, and the water-stopping component a plays a role in water-stopping and sealing. By inserting the positioning pin 4 of the lower float 1 into the positioning sleeve 3 of the upper float, multiple floats 1 are inserted together longitudinally, thus forming a float stacked beam maintenance gate that can block the water flow.
Claims
1. A simple floating box stacked beam inspection gate for the maintenance of water conservancy facilities, characterized in that: It includes a set of pontoons (1) that can be inserted together longitudinally, a set of positioning pins (4) and a set of positioning sleeves (3) on the pontoons (1), a water-stopping component (a) on the front of the pontoons (1), a first pad (6) that cooperates with the water-stopping component (a) and the corresponding pad on the pontoons (1), a set of limiting plates (9) on the back of the pontoons (1), and a sliding plate (15) on the pontoons (1) outside the limiting plates (9).
2. The simplified floating box stacked beam maintenance gate for water conservancy facility maintenance as described in claim 1, characterized in that: The water-stopping assembly (a) includes a first water-stopping rubber (10) connected to a first pressure plate (11), and a second water-stopping rubber (12) connected to the side wall of the float box (1) at both ends of the first water-stopping rubber (10) via a second pressure plate (13).
3. A simple floating box stacked beam maintenance gate for water conservancy facility maintenance as described in claim 2, characterized in that: The second water-stopping rubber (12) is L-shaped.
4. A simple floating box stacked beam maintenance gate for water conservancy facility maintenance as described in claim 1, characterized in that: The limiting plate (9) is L-shaped.
5. A simple floating box stacked beam maintenance gate for water conservancy facility maintenance as described in claim 1, characterized in that: The first pad (6) extends a distance from the float box (1) and corresponds to the thickness end face of the water-stopping component (a).
6. A simple floating box stacked beam maintenance gate for water conservancy facility maintenance as described in claim 1, characterized in that: The pontoon (1) has a positioning pin (4) and a positioning sleeve (3) at each end, and the positioning pin (4) and positioning sleeve (3) on the same side are coaxially distributed.
7. A simple floating box stacked beam maintenance gate for water conservancy facility maintenance as described in claim 1, characterized in that: Each of the floats (1) is connected to a lifting ring head screw (14).