Sand blasting and rust removing device for gate
By designing a gate sandblasting rust removal device, utilizing a sand storage tank and adjustment mechanism, the problems of high cost and poor stability of gate sandblasting rust removal were solved, achieving low-cost, high-efficiency rust removal operation and stability of the high-altitude work platform.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA THREE GORGES CORPORATION
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-19
AI Technical Summary
Existing methods for sandblasting and rust removal of gates are costly and inconvenient for sand transport. High-altitude work platforms have poor stability, which increases operating costs.
Design a gate sandblasting and rust removal device, including a base plate, a fixed plate, a sand storage tank and an adjustment mechanism. The sand storage tank and a temporary storage tank are connected by a telescopic connecting pipe. The height of the temporary storage tank is adjusted by an electric hoist. The sandblasting gun is connected to the temporary storage tank, which reduces the sand supply distance, reduces the sand supply cost and ensures stability.
It reduced the difficulty and cost of sand supply for rust removal of gates, improved operational efficiency, ensured the stability of the aerial work platform, and reduced operating costs.
Smart Images

Figure CN224255101U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gate rust removal technology, specifically to a gate sandblasting rust removal device. Background Technology
[0002] A lock is a box-shaped hydraulic structure used to ensure the smooth passage of ships and to concentrate water level differences in a waterway. For example, the Three Gorges double-line continuous five-stage lock is the main navigation facility of the Three Gorges Dam. A lock usually has multiple gates used in combination. The gates are coated with a protective coating. However, after long-term use, the surface coating of the lock gates and other metal structural equipment will gradually approach the design protection period, so rust removal treatment is required.
[0003] Current rust removal methods typically involve using an aerial work platform to transport workers and rust removal machines to the gate, where workers then operate the machine to remove rust. These machines are usually sandblasting machines. However, due to the high-altitude operation, the sand conveying pipeline is quite long, significantly increasing the cost of sandblasting. Placing the sand storage tank directly on the aerial work platform puts immense pressure on the platform, resulting in poor stability and increased operating costs. Utility Model Content
[0004] The main purpose of this utility model is to provide a gate sandblasting and rust removal device to solve the problems of high cost and inconvenience in sand transportation for gate sandblasting and rust removal.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A gate sandblasting and rust removal device includes a base plate and a fixing plate. A placement frame is provided on the top of the base plate, and a sandblasting gun is provided on the placement frame.
[0007] The top of the fixed plate is equipped with a sand storage tank and an adjustment mechanism. Below the adjustment mechanism is a temporary storage tank, which is located below the fixed plate. The temporary storage tank and the sand storage tank are connected by a retractable connecting pipe.
[0008] The fixing plate is fixed above the gate to be derusted, the sandblasting gun is used for sandblasting to remove rust, the temporary storage tank is used to temporarily store sand, and the base plate is set on the high-altitude work platform.
[0009] In a preferred embodiment, the base plate is provided with multiple connection holes for connection.
[0010] In a preferred embodiment, the rack is provided with a placement seat for holding the sandblasting gun;
[0011] The sandblasting gun is connected to an external gas-generating device via an air inlet pipe, and the sandblasting gun is connected to a temporary storage tank via a sand inlet pipe.
[0012] A pipe clamp is installed between the air intake pipe and the mounting bracket.
[0013] In the preferred embodiment, both the sand inlet pipe and the air inlet pipe are flexible hoses.
[0014] In a preferred embodiment, the adjusting mechanism includes an electric hoist located on top of the fixed plate;
[0015] The output end of the electric hoist is equipped with several pull ropes, and the bottom end of the pull ropes is equipped with a connecting block. The connecting block is connected to the temporary storage tank through multiple connecting ropes.
[0016] The top of the temporary storage tank is equipped with a fixing frame.
[0017] In a preferred embodiment, the connecting pipe includes a sleeve, which is fixedly connected to the fixing frame and the connecting block via a connecting bracket;
[0018] The sleeve has several movable tubes connected to it, and the diameter of the movable tubes decreases from bottom to top.
[0019] The uppermost movable pipe is movably connected to the jacking pipe, and the jacking pipe is fixedly connected to the fixed plate through the connecting plate.
[0020] Limiting rings are provided on the outer circumferential surface of the bottom end of the jacking pipe and the movable pipe, and limiting rings are provided on the inner circumferential surface of the top end of the sleeve and the movable pipe.
[0021] In a preferred embodiment, the bottom of the sand storage tank is provided with a sand outlet pipe, and the bottom end of the sand outlet pipe is located inside the top pipe.
[0022] In the preferred embodiment, the uppermost movable tube is sleeved on the outside of the top tube, and several movable tubes are sleeved on each other in succession, with the sleeve sleeved on the outside of the outermost movable tube.
[0023] This utility model provides a gate sandblasting and rust removal device. By adopting the above solution, it has the following beneficial effects:
[0024] 1. By classifying the sand storage tanks, the distance between the sandblasting gun and the sand storage tank is shorter, which reduces the difficulty of supplying sand when removing rust from the gate, resulting in lower sand supply costs, more convenient operation, and higher efficiency.
[0025] 2. The sand storage tank can be raised and lowered with the aerial work platform without the platform bearing the weight, thus ensuring the stability of the gate during the rust removal process and reducing the operating cost of the aerial work platform. Attached Figure Description
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0027] Figure 1 This is a schematic diagram of the structure of a gate sandblasting and rust removal device according to the present invention;
[0028] Figure 2 This is a schematic diagram of the structure of a gate sandblasting and rust removal device according to the present invention;
[0029] Figure 3 This is a side view of a gate sandblasting and rust removal device according to this utility model;
[0030] Figure 4 This is a structural schematic diagram of the placement rack described in this utility model;
[0031] Figure 5 This is a schematic diagram of the structure of the adjustment mechanism described in this utility model;
[0032] Figure 6 This is a cross-sectional view of the connection point of the movable tube described in this utility model.
[0033] In the picture:
[0034] Base plate 1, connecting hole 101, placement rack 2, temporary storage tank 3, sandblasting gun 4, placement seat 401, sand inlet pipe 402, air inlet pipe 403, pipe clamp 404, fixing plate 5, sand storage tank 6, sand outlet pipe 601, adjusting mechanism 7, electric hoist 701, pull rope 702, connecting block 703, connecting rope 704, fixing frame 705, connecting frame 706, connecting pipe 8, sleeve 801, movable pipe 802, jacking pipe 803, connecting plate 804, limit ring 805. Detailed Implementation
[0035] like Figure 1 , 2 As shown in Figures 3, 4, and 5, a gate sandblasting and rust removal device includes a base plate 1 and a fixing plate 5. The base plate 1 is provided with a plurality of connection holes 101 for connection. The base plate 1 is set on an aerial work platform. Preferably, it is threaded to the aerial work platform by passing bolts through the connection holes 101. The aerial work platform can be the one commonly used for valve rust removal.
[0036] In a further embodiment, a mounting frame 2 is provided on the top of the base plate 1, and a sandblasting gun 4 is provided on the mounting frame 2. The sandblasting gun 4 can be an existing sandblasting gun for rust removal, and air and sand are fed in using existing methods. A mounting base 401 is installed on the mounting frame 2, and the sandblasting gun 4 is placed on the mounting base 401. The sandblasting gun 4 is connected to an external air-generating device through an air inlet pipe 403. The air-generating device is preferably an air compressor. The air inlet device is set on the top of the gate or on the bank. A pipe clamp 404 is provided between the air inlet pipe 403 and the mounting frame 2 to fix the air inlet pipe 403 to the mounting frame 2 and prevent the air inlet pipe 403 from shaking.
[0037] The sandblasting gun 4 is connected to the temporary storage tank 3 through the sand inlet pipe 402. How the sand reaches the sandblasting gun 4 through the sand inlet pipe 402 and how it is sandblasted are done using existing technologies. This application will not elaborate on these methods. Existing technologies can deliver sand from the tank to the sandblasting gun 4 through a pipe and then to the sandblasting gun 4. This application implicitly includes structures that realize its functions, such as valves.
[0038] The temporary storage tank 3 is used to temporarily store sand. The sand inlet pipe 402 and the air inlet pipe 403 are both flexible hoses. When the sandblasting gun 4 is working, the air inlet pipe 403 and the sand inlet pipe 402 can flexibly adapt to the operation of the sandblasting gun 4. Furthermore, this application assumes that the length of the sand inlet pipe 402 and the air inlet pipe 403 is sufficient to complete the rust removal work of the gate.
[0039] Fix the fixing plate 5 above the rust-removing gate. Install a sand storage tank 6 on top of the fixing plate 5. The sand storage tank 6 is used to store the total sand. A sand discharge pipe 601 is provided at the bottom of the sand storage tank 6, and a valve is provided on the sand discharge pipe 601 to control the discharge of sand.
[0040] This application uses a sand storage tank 6 to store the total sand and a temporary storage tank 3 to supply sand to the sandblasting gun 4, thereby solving the problems of excessively long sand supply pipelines, inconvenience in sand supply, and high sand supply costs during high-altitude rust removal.
[0041] In a further embodiment, an adjustment mechanism 7 is installed on the top of the fixed plate 5. The adjustment mechanism 7 includes an electric hoist 701, which is driven and operated in an existing manner. The output end of the electric hoist 701 is connected to several pull ropes 702, and a connecting block 703 is installed at the bottom end of the pull ropes 702. A fixed frame 705 is installed on the top of the temporary storage tank 3. The connecting block 703 is connected to the fixed frame 705 of the temporary storage tank 3 through multiple connecting ropes 704. The electric hoist 701 raises and lowers the connecting block 703 by raising and lowering the pull ropes 702, thereby adjusting the height of the temporary storage tank 3 so that the height of the temporary storage tank 3 is adapted to the height of the aerial work platform to ensure stable sand supply. Furthermore, the weight of the temporary storage tank 3 will not affect the aerial work platform, ensuring stability during the sand discharge process.
[0042] A connecting pipe 8 is provided between the sand storage tank 6 and the temporary storage tank 3. The connecting pipe 8 includes a sleeve 801, which is fixedly connected to the fixing frame 705 and the connecting block 703 through the connecting frame 706.
[0043] The uppermost movable tube 802 is fitted onto the outside of the top tube 803, and several movable tubes 802 are fitted together in stages, with the sleeve 801 fitted onto the outside of the outermost movable tube 802; for example Figure 6 As shown, the outer circumferential surface of the bottom end of the movable tube 802 and the top tube 803 is provided with a limiting ring 805, and the inner circumferential surface of the top end of the sleeve 801 and the movable tube 802 is provided with a limiting ring 805. The limiting ring 805 can prevent the connected sleeve 801, movable tube 802 and top tube 803 from separating. During the lifting and lowering of the temporary storage tank 3, the sleeve 801 follows the lifting and lowering of the temporary storage tank 3, the top tube 803 remains stationary, and the movable tube 802 moves according to the lifting and lowering changes, such as sliding out or in from another movable tube 802, so as to adapt to the change of height of the temporary storage tank 3.
[0044] The jacking pipe 803 is fixedly connected to the fixed plate 5 by the connecting plate 804, and the bottom end of the sand outlet pipe 601 of the sand storage tank 6 must be located inside the jacking pipe 803. When the sand in the temporary storage tank 3 needs to be replenished, the sand in the sand storage tank 6 enters the jacking pipe 803 through the sand outlet pipe 601, and then enters the temporary storage tank 3 through the movable pipe 802 and the sleeve 801.
[0045] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.
Claims
1. A gate sandblasting and rust removing device, characterized by: Includes a base plate (1) and a fixing plate (5). The base plate (1) is provided with a placement rack (2) on top, and a sandblasting gun (4) is provided on the placement rack (2). The top of the fixed plate (5) is provided with a sand storage tank (6) and an adjustment mechanism (7). Below the adjustment mechanism (7) is a temporary storage tank (3). The temporary storage tank (3) is located below the fixed plate (5). The temporary storage tank (3) and the sand storage tank (6) are connected by a retractable connecting pipe (8). The fixing plate (5) is fixed above the gate to be derusted, the sandblasting gun (4) is used for sandblasting and derusting, the temporary storage tank (3) is used for temporary storage of sand, and the base plate (1) is set on the high-altitude work platform.
2. The gate sandblasting and derusting device according to claim 1, characterized in that: The base plate (1) is provided with multiple connection holes (101) for connection.
3. The gate sandblasting and rust removing device according to claim 1, characterized in that: The placement rack (2) is provided with a placement seat (401), which is used to place the sandblasting gun (4); The sandblasting gun (4) is connected to an external gas-generating device through the air inlet pipe (403), and the sandblasting gun (4) is connected to the temporary storage tank (3) through the sand inlet pipe (402).
4. The gate sandblasting and rust removing device according to claim 3, characterized in that: A pipe clamp (404) is provided between the air intake pipe (403) and the mounting bracket (2).
5. The gate sandblasting and rust removing device according to claim 3, characterized in that: Both the sand inlet pipe (402) and the air inlet pipe (403) are flexible hoses.
6. The gate sandblasting and rust removing device according to claim 1, characterized in that: The adjustment mechanism (7) includes an electric hoist (701) located on top of the fixed plate (5); The output end of the electric hoist (701) is provided with several pull ropes (702), and the bottom end of the pull ropes (702) is provided with a connecting block (703). The connecting block (703) is connected to the temporary storage tank (3) through multiple connecting ropes (704). The top of the temporary storage tank (3) is equipped with a fixing frame (705).
7. A gate sandblasting device according to claim 6, characterized in that: The connecting pipe (8) includes a sleeve (801), which is fixedly connected to the fixing frame (705) and the connecting block (703) through the connecting bracket (706); The sleeve (801) is movably connected to several movable tubes (802), and the diameter of the movable tubes (802) decreases from bottom to top; The uppermost movable pipe (802) is movably connected to the jacking pipe (803), and the jacking pipe (803) is fixedly connected to the fixed plate (5) through the connecting plate (804).
8. A gate sandblasting and rust removing device according to claim 7, characterized in that: A limiting ring (805) is provided on the outer circumferential surface of the bottom end of the jacking pipe (803) and the movable pipe (802); The inner circumferential surface of the top end of the sleeve (801) and the movable tube (802) is provided with a limiting ring (805).
9. The gate sandblasting and rust removing device according to claim 7, characterized in that: The bottom of the sand storage tank (6) is provided with a sand outlet pipe (601), and the bottom end of the sand outlet pipe (601) is located inside the top pipe (803).
10. The gate sandblasting and rust removing apparatus according to claim 7, wherein: The uppermost movable tube (802) is sleeved on the outside of the top tube (803), and several movable tubes (802) are sleeved on each other in succession. The sleeve (801) is sleeved on the outside of the outermost movable tube (802).