Emergency extraction device for submersible equipment

Abstract

This utility model discloses an emergency retrieval device for diving equipment, belonging to the field of water plant operation and maintenance technology. It includes a lifting support, which comprises a connecting frame, a first clamping arm, and a second clamping arm. The first and second clamping arms are cross-movably mounted on a mounting base, which is slidably mounted on a guide rod via the connecting frame. Each of the first and second clamping arms has a lifting hole at one end and a clamping head for holding the diving equipment at the other end. Telescopic springs are correspondingly installed between the side of the first clamping arm near the lifting hole and the side of the second clamping arm near the clamping head, and between the side of the second clamping arm near the lifting hole and the side of the first clamping arm near the clamping head. Using this retrieval device facilitates the retrieval and maintenance of diving equipment, enabling efficient and low-cost maintenance without interrupting operation and venting, saving labor and operating costs, effectively shortening the construction period, and reducing safety risks.

Description

Technical Field

[0001] This utility model belongs to the field of water plant operation and maintenance technology, and specifically relates to an emergency extraction device for diving equipment. Background Technology During the operation and maintenance of wastewater treatment plants, it is necessary to inspect and repair the submersible equipment in the pool. Usually, it is necessary to use extraction tools to lift the submersible equipment out of the pool. The lifting tools that the existing submersible equipment comes with usually consist of a guide rod, a lifting rod, and a chain hoist. The chain hoist is fixed to the lifting rod, and the chain of the chain hoist is fixed to the submersible equipment. During inspection and repair, the equipment is lifted along the guide rod by manually operating the chain hoist.

[0002] However, existing lifting tools have some drawbacks in practical use. For example, during equipment operation, the chain links are subject to friction due to water flow impact, leading to severe wear after prolonged use. If worn chain links are not replaced in time, the chain is prone to breakage, preventing the submersible equipment from being retrieved properly. Since submersible equipment is mostly located at the bottom of the tank, and the process system is operational, retrieving the equipment requires shutting down the system and emptying the tank, or hiring professional divers for underwater operations, impacting maintenance costs and personnel safety. On one hand, after emptying the tank, the activated sludge bacteria in the biological tank need to be recultured, which is time-consuming and incurs high costs for bacteria cultivation and system restart. On the other hand, tank dredging is a closed-space operation, and toxic gases such as hydrogen sulfide and ammonia adsorbed in the sludge are difficult to completely remove through ventilation, posing a high risk of poisoning to dredging or diving personnel, and resulting in low operational efficiency. Summary of the Invention

[0003] To address the issues of high cost and significant safety risks in emergency retrieval of diving equipment in existing technologies, this utility model provides an emergency retrieval device for diving equipment. By optimizing the structure of the lifting support, the above problems can be effectively solved, facilitating the retrieval and maintenance of the equipment, saving labor and operating costs, shortening the construction period, and reducing safety risks.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides an emergency retrieval device for diving equipment, including a lifting support, wherein the lifting support includes a connecting frame, a first clamping arm, and a second clamping arm, wherein: The first clamping arm and the second clamping arm are cross-movably mounted on the mounting base, and the mounting base is slidably mounted on the guide rod via the connecting frame; One end of the first clamping arm and the second clamping arm are both machined with lifting holes, and the other end is provided with clamping heads for clamping diving equipment; A telescopic spring is installed between the side near the lifting hole of the first clamping arm and the side near the clamping head of the second clamping arm, and between the side near the lifting hole of the second clamping arm and the side near the clamping head of the first clamping arm.

[0005] This invention optimizes the structure of the lifting support by incorporating a connecting frame, a first clamping arm, and a second clamping arm. The connecting frame connects the clamping arms and slides on the guide rod. This design significantly improves the operational flexibility of the extraction device, allowing operators to easily adjust the position of the lifting support according to the actual location of the diving equipment, achieving rapid and precise positioning. Simultaneously, it provides guidance for the operation of the extraction device, facilitating rapid positioning of the diving equipment. The first and second clamping arms are cross-connected, allowing the clamping arms to adaptively adjust to the shape and size of the diving equipment. When encountering diving equipment of different specifications, the clamping arms can flexibly change their opening and closing angles to ensure a tight grip on the equipment. In one possible implementation of this utility model, the first or second clamping arm is machined with multiple adjustment holes, and a mounting shaft is inserted into each adjustment hole. After the adjustment holes on the first and second clamping arms are aligned, they can be rotatably mounted on the mounting base via the mounting shaft. The multiple adjustment holes allow for the use of different adjustment holes to install the first and second clamping arms according to the size of the diving equipment, thus meeting the emergency extraction needs of diving equipment of different specifications.

[0006] As one possible implementation of this utility model, a clamping block is movably mounted on the clamping head, and an anti-slip pad is provided on the surface of the clamping block that contacts the diving equipment. The anti-slip pad can be made of flexible material, which can not only improve the stability of clamping and prevent it from falling off, but also protect the clamped part of the diving equipment and prevent damage to the surface of the equipment.

[0007] In one possible implementation of this utility model, both the first and second clamping arms are L-shaped structures, which, when cross-connected, form a natural clamping opening, facilitating clamping on the diving equipment. The mounting base is connected to the connecting frame via a telescopic structure, allowing adjustment of the lifting bracket's position according to the diving equipment specifications, facilitating quick positioning of the diving equipment and subsequent clamping.

[0008] As one possible implementation of this utility model, the first clamping arm and the second clamping arm are made of corrosion-resistant high-strength steel plates, which solves the problem of large torque and easy deformation of the extraction device when extracting diving equipment.

[0009] As one possible implementation of this utility model, rollers are installed on the side wall of the connecting frame that contacts the guide rod to reduce friction between the lifting bracket as a whole and the guide rod.

[0010] In one possible implementation of this utility model, the roller is telescopically mounted on the inner wall of the connecting frame via a telescopic rod. By adjusting the distance between the roller and the side wall of the connecting frame, it can be matched to the application scenarios of guide rods of different specifications, thus expanding the application range of the extraction device.

[0011] As one possible implementation of this utility model, it also includes a hoist and a chain, the chain being connected to the lifting holes of the first clamping arm and the second clamping arm, the lifting hook of the hoist being hooked on the chain, and the hoist being lifted upwards at a uniform speed.

[0012] The extraction operation using the above-described extraction device includes the following steps: Step 1: Adjust the maximum opening degree of the first and second clamping arms to match the specifications of the diving equipment to be retrieved. Step 2: Install the connecting frame on the guide rod, lower the extraction device to the diving equipment, and adjust the position of the extraction device so that the two clamping heads of the first clamping arm and the second clamping arm clamp onto the surface of the diving equipment. Step 3: Pull up the entire extraction device and remove it from the pool along with the diving equipment.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses an emergency extraction device for diving equipment, which is applicable during the operation and maintenance of sewage treatment plants when diving equipment cannot be extracted normally in the conventional way. By using this extraction device, it is convenient to extract and repair the equipment, save labor and operating costs, effectively shorten the construction period, reduce safety risks, and achieve efficient and low-cost maintenance without stopping operation and emptying, resulting in significant economic and social benefits. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an emergency extraction device for diving equipment according to the present invention; Figure 2 This is a schematic diagram of the main structure of the extraction device of this utility model; Figure 3 This is a three-dimensional structural diagram of the lifting bracket of this utility model.

[0015] In the picture: 1. Base; 2. Guide rod; 3. Lifting bracket; 31. Connecting frame; 311. Roller; 312. Telescopic rod; 32. Mounting base; 33. First clamping arm; 34. Second clamping arm; 35. Clamping head; 36. Clamping block; 37. Adjustment hole; 38. Telescopic spring; 39. Lifting hole; 4. Lifting boom. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Example 1 like Figure 1-2 As shown, an emergency retrieval device for diving equipment according to this embodiment includes a lifting support 3. The lifting support 3 includes a connecting frame 31, a first clamping arm 33, and a second clamping arm 34. The first clamping arm 33 and the second clamping arm 34 are cross-movably mounted on a mounting base 32. The mounting base 32 is slidably mounted on a guide rod 2 via the connecting frame 31. The guide rod 2 is fixedly mounted on the bottom of the pool via a base 1. A lifting rod 4 is provided above the guide rod 2.

[0018] Specifically, such as Figure 3As shown, the first clamping arm 33 and the second clamping arm 34 have the same structure, both machined into an "L" shape. The first clamping arm 33 and the second clamping arm 34 cross-connect to form a natural clamping opening, facilitating clamping on diving equipment. The first clamping arm 33 and the second clamping arm 34 are movably mounted on the mounting base 32. This ingenious design allows the clamping arms to adaptively adjust according to the shape and size of the diving equipment. When encountering diving equipment of different specifications, the clamping arms can flexibly change their opening and closing angles to ensure proper clamping of the diving equipment.

[0019] Telescopic springs 38 are installed between the side near the lifting hole 39 of the first clamping arm 33 and the side near the clamping head 35 of the second clamping arm 34, and between the side near the lifting hole 39 of the second clamping arm 34 and the side near the clamping head 35 of the first clamping arm 33. When a lifting force is applied to the lifting hole 39, the telescopic springs 38 automatically adjust their elasticity according to the magnitude of the lifting force and the weight of the diving equipment, ensuring that the first clamping arm 33 and the second clamping arm 34 always maintain a stable clamp on the diving equipment, effectively preventing dangerous situations such as shaking or falling off the diving equipment due to uneven force during the lifting process.

[0020] It should be noted that, in order to ensure that the two clamping arms of the lifting support 3 can open and close to the maximum extent underwater, the two clamping arms are in the open state in the free state, and in the closed state under the lifting force of the two lifting points. Therefore, the selection of the spring coefficient of the telescopic spring 38 should follow the principle that the deformation of the telescopic spring 38 multiplied by the elastic coefficient of the telescopic spring 38 meets the self-weight of the lifting support 3.

[0021] The first clamping arm 33 and the second clamping arm 34 each have a lifting hole 39 at one end and a clamping head 35 for clamping the diving equipment at the other end. The extraction device also includes a hoist and a chain. The chain connects the lifting holes 39 of the first clamping arm 33 and the second clamping arm 34. The hoist's lifting hook hooks onto the middle of the chain to lift the entire extraction device together with the diving equipment.

[0022] Furthermore, a clamping block 36 is movably mounted on the clamping head 35, providing a more flexible and reliable method for clamping diving equipment. The clamping block 36 can adaptively adjust to the surface shape of the diving equipment, ensuring full contact with the surface and thus increasing friction. An anti-slip pad is provided on the surface of the clamping block 36 that contacts the diving equipment. The textured surface of the anti-slip pad effectively increases friction with the diving equipment, ensuring that the clamping block 36 firmly grips the equipment and prevents it from slipping, even in harsh underwater environments. Simultaneously, the anti-slip pad is made of a flexible material, which also protects the clamped parts of the diving equipment.

[0023] In this embodiment, the structure of the first clamping arm 33 and the second clamping arm 34 is further designed. Specifically, multiple adjustment holes 37 are machined on the first clamping arm 33 or the second clamping arm 34. The multiple adjustment holes 37 can be arranged at equal intervals, or the spacing can gradually increase towards the lifting hole 39. After aligning the adjustment holes 37 at the same position on the two clamping arms, the mounting shaft is inserted. The diameter of the mounting shaft is smaller than that of the adjustment holes 37. One end of the mounting shaft is provided with a connecting block, the size of which is larger than that of the adjustment holes 37. During installation, the other end of the mounting shaft passes through the adjustment holes 37 of the two clamping arms and is fixedly mounted on the mounting base 32.

[0024] The above structural design ensures that the first clamping arm 33 and the second clamping arm 34 can rotate on the mounting shaft. The mounting base 32 is connected to the connecting frame 31 through a telescopic structure, and the position of the lifting bracket 3 can be adjusted according to the specifications of the diving equipment, facilitating quick positioning of the diving equipment and subsequent clamping.

[0025] Multiple adjustment holes 37 are designed so that, depending on the specifications of the diving equipment to be retrieved, the mounting shaft can be inserted into different positions of the adjustment holes 37 to adjust the maximum opening degree of the first clamping arm 33 and the second clamping arm 34, ensuring a perfect match with the specifications of the diving equipment. When handling small diving equipment, the operator can insert the mounting shaft into the adjustment hole 37 near the clamping head 35 to reduce the opening degree of the clamping arms, thus clamping the small equipment more tightly. When retrieving large diving equipment, the mounting shaft can be inserted into the adjustment hole further away from the clamping head 35 to increase the opening degree of the clamping arms, ensuring a stable grip on the large equipment.

[0026] Furthermore, in the emergency retrieval device for diving equipment, the torque is relatively large, which can easily cause deformation of the retrieval device. This embodiment selects the materials for the first clamping arm 33 and the second clamping arm 34. The first clamping arm 33 and the second clamping arm 34 are made of corrosion-resistant high-strength steel plate. Corrosion-resistant high-strength steel plate has high strength and can withstand large tensile and compressive forces. In actual emergency retrieval operations, diving equipment may become trapped in complex underwater conditions for various reasons, requiring significant external force to retrieve it. The clamping arms made of corrosion-resistant high-strength steel plate can stably withstand the enormous tensile forces during lifting, ensuring that they will not deform or be damaged due to excessive force during retrieval. Simultaneously, the sewage tank is filled with corrosive substances that can corrode metal materials and reduce their performance. Corrosion-resistant high-strength steel plate has excellent corrosion resistance, maintaining stable performance for a long time in this complex sewage environment, preventing structural strength reduction due to corrosion, and greatly extending the service life of the device. This not only reduces equipment maintenance costs and replacement frequency, but also ensures that the device can operate normally at critical moments, providing a reliable guarantee for the emergency retrieval of diving equipment.

[0027] Furthermore, as another feasible solution in this embodiment, rollers 311 can be installed on the side wall of the connecting frame 31 that contacts the guide rod 2, making the movement of the extraction device smoother. During the movement of the extraction device along the guide rod 2, the rollers 311 convert the sliding friction between the connecting frame 31 and the guide rod 2 into rolling friction, greatly reducing friction. This makes it easier and less strenuous for operators to move the extraction device, enabling them to quickly lower the device to the diving equipment or remove it from the pool. In time-sensitive emergency situations, this smooth mobility can buy valuable time for rescue operations.

[0028] With further optimization, the roller 311 can be telescopically mounted on the inner wall of the connecting frame 31 via the telescopic rod 312. By adjusting the distance between the roller 311 and the side wall of the connecting frame 31, it can be matched with the application scenarios of guide rods of different specifications, thus expanding the application range of the extraction device.

[0029] The extraction device of this utility model does not require stopping the operation of the process system or emptying the tank, thus avoiding the cost of reculturing the microbial community and the loss of system downtime caused by emptying the tank. When performing the extraction operation, the device is operated by its own lowering structure, that is, it is precisely positioned and stabilized along the original guide rod of the device, avoiding jamming or device falling off. No personnel are required to enter the closed tank or work underwater, thus avoiding the risks of poisoning by toxic gases and underwater operations.

[0030] This embodiment also provides a method for using the above-mentioned emergency extraction device for diving equipment, including the following steps: Step 1: According to the specifications of the diving equipment to be extracted, adjust the maximum opening degree of the first clamping arm 33 and the second clamping arm 34 to match the specifications of the diving equipment. Install the first clamping arm 33 and the second clamping arm 34. Connect the hoist to the lifting hole of the lifting rod 3 through the hook, and connect the lifting holes 39 of the two clamping arms with a chain. The hoist hook is hooked in the middle of the chain.

[0031] Step 2: Place the connecting frame 31 onto the guide rod 2, lower the extraction device along the guide rod 2 to the diving equipment, pull the chain, and adjust the position of the extraction device so that the two clamping heads 35 are clamped on the surface of the diving equipment; under the action of the pulling force, the first clamping arm 33 and the second clamping arm 34 overcome the elastic force of the telescopic spring 38 and close until the diving equipment is tightly clamped. Step 3: After confirming that the clamping arm has clamped the equipment, slowly lift the entire extraction device upwards using a hoist, and remove it from the pool along with the diving equipment to complete the extraction.

[0032] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A submersible emergency extraction device, characterized by: The lifting bracket (3) includes a connecting frame (31), a first clamping arm (33), and a second clamping arm (34), wherein: The first clamping arm (33) and the second clamping arm (34) are cross-movably mounted on the mounting base (32), and the mounting base (32) is slidably mounted on the guide rod (2) through the connecting frame (31); One end of the first clamping arm (33) and the second clamping arm (34) are both machined with lifting holes (39), and the other end is provided with clamping heads (35) for clamping diving equipment. A telescopic spring (38) is installed between the side near the lifting hole (39) of the first clamping arm (33) and the side near the clamping head (35) of the second clamping arm (34), and between the side near the lifting hole (39) of the second clamping arm (34) and the side near the clamping head (35) of the first clamping arm (33).

2. The submersible emergency extraction device of claim 1, wherein, Multiple adjustment holes (37) are machined on the first clamping arm (33) or the second clamping arm (34). An installation shaft is inserted into the adjustment hole (37). After the adjustment holes (37) on the first clamping arm (33) and the second clamping arm (34) are aligned, they can be rotatably installed on the mounting base (32) through the installation shaft.

3. The submersible emergency extraction device of claim 1, wherein, A clamping block (36) is movably mounted on the clamping head (35), and an anti-slip pad is provided on the surface of the clamping block (36) that contacts the diving equipment.

4. The submersible emergency extraction device of any one of claims 1-3, wherein, The first clamping arm (33) and the second clamping arm (34) are both "L" shaped structures, and the mounting base (32) is connected to the connecting frame (31) through a telescopic structure.

5. The emergency retrieval device for diving equipment according to any one of claims 1-3, characterized in that, The first clamping arm (33) and the second clamping arm (34) are made of corrosion-resistant high-strength steel plates.

6. The submersible emergency extraction device of any one of claims 1-3, wherein, Rollers (311) are installed on the side wall of the connecting frame (31) that contacts the guide rod (2).

7. The emergency extraction device for diving equipment according to claim 6, characterized in that, The roller (311) is telescopically mounted on the inner wall of the connecting frame (31) via a telescopic rod (312).

8. The emergency retrieval device for diving equipment according to any one of claims 1-3, characterized in that, It also includes a hoist and a chain, the chain connecting the lifting holes (39) of the first clamping arm (33) and the second clamping arm (34), and the lifting hook of the hoist hooking onto the chain.

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