Lifting device for diving equipment
By designing a diving equipment hoist, utilizing the sliding connection between the anastomosis frame and the guide rail and the improved lifting ring structure, the problems of easy wear of the lifting chain and inaccurate positioning of the hoist are solved, thus achieving safe and efficient diving equipment lifting operations.
Patent Information
- Application Number
- CN202422539730.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing diving equipment lifting chains are susceptible to wear and corrosion, leading to breakage and posing safety risks. In addition, the existing lifting devices are not accurately positioned and are prone to unhooking, resulting in low safety.
A diving equipment hoist was designed, which adopted a stapling frame connected to the mounting guide rail for sliding. The hook adjusted its position through a telescopic guide rod, and the auxiliary chain controlled the position of the stapling frame. The hook slid to the optimal force point by itself. The improved lifting ring had a U-shaped structure to ensure precise positioning and prevent unhooking.
It avoids long-term underwater wear of the lifting chain, improves the safety and accuracy of lifting, reduces frequent inspections and maintenance work, reduces operating costs, and improves operating efficiency and equipment service life.
Smart Images
Figure CN223422208U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hoisting equipment, in particular to a diving equipment hoist. Background Art
[0002] Submersible flow propellers / mixers (hereinafter referred to as "submersible equipment") are commonly used in sewage treatment plants, primarily in structures such as regulating tanks, hydrolysis and acidification tanks, biochemical tanks, and sludge storage tanks. Their primary function is to achieve uniform mixing of materials within the tanks. Traditionally, each submersible equipment unit is equipped with a guide rod, lifting chain, and a top-mounted equipment hoist, typically constructed of 304 stainless steel. To facilitate maintenance and lifting operations, one end of the lifting chain is typically securely fixed to the tank surface, while the other end remains connected to the submersible equipment. The majority of the lifting chain is permanently submerged in sewage or a sludge-water mixture.
[0003] During actual operation, the underwater chain is frequently swung due to the combined effects of hydraulic scouring and equipment vibration, causing friction between the chain links, which in turn accelerates chain wear, reduces diameter, and reduces load-bearing capacity (especially for chains close to the equipment fixing points). If this is not discovered in time, it may lead to: (1) chain breakage, which may become entangled in the equipment and cause equipment failure; (2) the chain may suddenly break during the lifting operation of the diving equipment due to its reduced diameter due to wear, causing the equipment to fall and be damaged.
[0004] To prevent equipment from falling and being damaged, even if the diving equipment itself is not due for maintenance or repair, it must be lifted regularly and frequently (every three to six months) to routinely inspect the chain for wear and promptly replace any chains at risk of breakage. This not only increases workload and operating costs, but also significantly increases the safety risks of workers falling from heights and drowning. Furthermore, existing lifting devices on the market generally use three- or five-claw hooks, often custom-made by diving equipment manufacturers. These lifting devices often suffer from issues such as inaccurate positioning, easy hook release, and low safety. Utility Model Content
[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a diving equipment hoist to solve the problems in the prior art that the lifting chain is susceptible to wear and corrosion, which causes it to break easily, and thus poses a safety risk during the lifting operation of the diving equipment. At the same time, the existing hoist has the problems of inaccurate positioning, easy unhooking, and low safety when in use.
[0006] To solve the above technical problems, the present invention adopts the following technical solutions:
[0007] A diving equipment hoist comprises an anastomosis frame, wherein a slot is provided on one side of the anastomosis frame along its length direction, one end of the slot extends from one end of the anastomosis frame to the other end thereof, and both ends of the slot pass through both ends of the anastomosis frame; both side edges of the slot along its length direction are bent inwardly and continue to extend, so that the anastomosis frame can be slidably connected to a mounting guide rail on the diving equipment through the slot and can slide along the length direction of the mounting guide rail; a telescopic guide rod is provided on the anastomosis frame and on a side away from the slot opening, the telescopic guide rod having a telescopic end, and the telescopic end can move along the length direction of the telescopic guide rod; the end of the telescopic guide rod away from the telescopic end is fixedly connected to the anastomosis frame, and the telescopic end is fixedly connected to a hook, and the distance between the hook and the anastomosis frame can be adjusted by the telescopic end of the telescopic guide rod; one end of the hook is a connecting end, which is fixedly connected to one end of a lifting chain, and the other end of the lifting chain is fixedly connected to the lifting equipment; the other end of the hook is in the shape of a curved hook. An auxiliary chain is also provided on the outside of the anastomosis frame. One end of the auxiliary chain is fixedly connected to the anastomosis frame, and the position of the anastomosis frame on the mounting guide rail can be controlled through the other end of the auxiliary chain.
[0008] Preferably, the telescopic guide rod includes a sleeve and a sliding rod, one end of the sleeve is fixedly connected to the anastomosis frame, one end of the sliding rod extends into the other end of the sleeve and is slidably connected to the sleeve, and the sleeve can prevent the sliding rod from slipping out of the sleeve; the other end of the sliding rod is fixedly connected to the hook.
[0009] Preferably, at least one sliding groove is provided on the sleeve along its length direction, the sliding groove passes through the wall of the sleeve, and one end of the sliding groove extends from one end of the sleeve to the other end thereof, and both ends of the sliding groove are closed ends; at least one protrusion is provided on the end of the sliding rod extending into the sleeve, the protrusion passes through the sliding groove and extends to the outside of the sleeve, and the protrusion can prevent the sliding rod from slipping off the sleeve.
[0010] Preferably, at least one spring is provided between the sleeve and the slide rod, one end of the spring is fixedly connected to the sleeve, and the other end of the spring is fixedly connected to an end of the slide rod away from the sleeve.
[0011] Preferably, when there are two or more slide grooves, the slide grooves are spaced apart along the circumference of the sleeve, and the protrusions on the slide rod are arranged in a one-to-one correspondence with the slide grooves.
[0012] Preferably, when there are two or more springs, the springs are distributed at intervals along the circumference of the sleeve.
[0013] Preferably, a positioning frame is further provided below the telescopic guide rod. The positioning frame is T-shaped and consists of a horizontal rod and a vertical rod. One end of the vertical rod is fixedly connected to the anastomosis frame, and the other end is fixedly connected to the middle part of the horizontal rod along its length direction, so that the length direction of the horizontal rod is perpendicular to the length direction of the anastomosis frame.
[0014] Preferably, the outer side of the hanging chain is wrapped with a waterproof material layer or the outer side of the hanging chain is coated with a waterproof material layer.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] 1. The utility model has designed the structure of the hoist in a targeted manner. It is slidably connected to the installation guide rail on the diving equipment through the anastomosis frame. The operator can use the auxiliary chain to lower the diving equipment to the underwater equipment installation site. In this process, the lifting chain can be omitted and the hook is in a stress-free state. At the same time, the auxiliary chain will not be immersed in water for a long time, which not only avoids the wear of the lifting chain, but also reduces the degree of damage and corrosion of the auxiliary chain, and extends the service life of the hoist. In actual use, there is no need to set up traditional lifting chains at the diving equipment installation site, and the diving equipment and the hoist are configured one-to-one, which completely eliminates the wear and tear and easy breakage risks caused by the long-term underwater immersion of traditional lifting chains; at the same time, it eliminates the risks of equipment falling and failure during lifting operations.
[0017] 2. In the hoist described in the utility model, the hook can accurately hook the lifting ring on the diving equipment. At the same time, after hooking, the hook can move to the optimal force point by itself under the action of gravity through the telescopic guide rod. The positioning is accurate and not easy to be unhooked, and the lifting process is more stable.
[0018] 3. The use of the hoist described in the utility model saves the lifting operations and other operations caused by frequent checks on the status of the lifting chains at the installation site, reduces the pre-operation preparation time and operation time, and improves the overall operation efficiency; only one set of hoists is required (with one matching wire rope and one common lifting chain) to meet the lifting operation needs of the diving equipment in the entire factory, greatly saving the replacement cost of the lifting chain; at the same time, it saves the corresponding operating costs such as equipment failure repairs caused by broken lifting chains, and even frogman underwater salvage operations; the production cost is low. Compared with similar products on the market, the hoist is compact in shape, simple to make, easy to operate, the material is easily available, corrosion-resistant, high in strength, and has a long service life. Standard parts can be produced in batches, and the maintenance cost is negligible. It has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a structural diagram of a diving equipment hoist according to the utility model;
[0020] Figure 2 The figure is a schematic diagram of the hook in the hoist hooking the lifting ring on the diving equipment.
[0021] In the figure: anastomosis frame 1, slot 2, hook 3, hanging chain 4, auxiliary chain 5, sleeve 6, slide bar 7, slide groove 8, protrusion 9, spring 10, positioning frame 11. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the utility model belong to the scope of protection of the utility model.
[0023] In the prior art, when installing or overhauling a submersible flow inducer / stirrer (hereinafter referred to as "submersible equipment" for short), an installation guide rail, a lifting chain and a pool top equipment lifting frame are usually configured. One end of the lifting chain is fixed reliably on the pool surface, and the other end is always connected with the submersible equipment, and most of the length of the chain is submerged in sewage or slurry mixture for a long time. As a result, due to the long-term underwater immersion of the lifting chain, it is difficult to avoid the problems of easy wear and tear and breakage due to the influence of the specific working environment. Because of the wear and tear and breakage of the lifting chain, the submersible equipment is damaged due to falling during the lifting process of the clean water equipment. Or because the lifting chain is disconnected, the impeller or paddle of the submersible equipment is entangled, causing the submersible equipment to malfunction. In order to avoid the falling damage of the submersible equipment, even if the submersible equipment itself has not reached the maintenance or repair period, the wear condition of the lifting chain needs to be checked regularly, and the lifting chain with the risk of breakage needs to be replaced in time. This not only increases the workload and operating cost, but also greatly increases the safety risk of falling from a high place and drowning of the operating personnel.
[0024] In order to solve the above technical problems, the utility model provides a submersible equipment lifter, which comprises Figure 1As shown, the lifting device includes an anastomosis frame 1, with a slot 2 formed on one side of the anastomosis frame along its length. One end of the slot extends from one end of the anastomosis frame to the other end, and both ends of the slot pass through both ends of the anastomosis frame. The two side edges of the slot along its length are bent inward and continue to extend, so that the anastomosis frame can be slidably connected to the mounting rail on the diving equipment through the slot and can slide along the length of the mounting rail. When in use, the diving equipment is usually equipped with a mounting rail for lifting and lowering the diving equipment. The lifting device is slidably connected to the mounting rail through the slot on the anastomosis frame, so that the lifting device can be lifted and lowered along the mounting rail. A telescopic guide rod is provided on the anastomosis frame, facing away from the slot opening. The guide rod has a telescopic end that can move along its length. The end of the telescopic guide rod, facing away from the telescopic end, is fixedly connected to the anastomosis frame. This end is fixedly connected to a hook 3, and the distance between the hook and the anastomosis frame can be adjusted using the telescopic end of the telescopic guide rod. During use, the hoist slides along the mounting rails of the anastomosis frame and descends above the diving device. The operator hooks the hook onto a lifting ring on the diving device and then hoists the diving device using the hoisting device. One end of the hook is a connecting end, fixedly connected to one end of a lifting chain 4, the other end of which is fixedly connected to the lifting device. The other end of the hook is curved. An auxiliary chain 5 is also provided on the outside of the anastomosis frame. One end of the auxiliary chain is fixedly connected to the anastomosis frame, and the other end of the auxiliary chain can be used to control the position of the anastomosis frame on the mounting rails. During actual use, the stapling frame in the hoist is slidably connected to the mounting guide rail through the slots thereon, so that the hoist can slide along the mounting guide rail to the top of the underwater diving equipment. During the descent of the hoist, the hook connected to the telescopic guide rod is in a stress-free state. When the hoist is lowered to the top of the diving equipment, the operator hooks the lifting ring on the diving equipment with the hook. Since the hook is connected to the stapling frame through the telescopic guide rod, the hook can slide to the optimal stress point under the gravity of the diving equipment, and the hook-shaped end of the hook also provides a guarantee for the stable lifting of the diving equipment and prevent it from being unhooked. For this reason, the present application also improves the lifting ring on the diving equipment. In the prior art, the lifting ring on the diving equipment is generally a closed circular ring structure, which is not conducive to the precise positioning of the hoist and the hooking of the equipment.Therefore, the present application improves the original closed circular ring structure on the diving equipment. The improved lifting ring is a U-shaped structure, and its length direction is consistent with the length direction of the mounting rail. The two ends of the lifting ring are respectively fixedly connected to the upper side of the diving equipment, so that the end of the closed end of the lifting ring away from the mounting rail is located above the center of gravity of the diving equipment, so that it is located on the same straight line as the center of gravity of the diving equipment in the vertical direction, that is: the end of the closed end of the lifting ring away from the mounting rail is located on the center of gravity line of the diving equipment in the vertical direction. In this way, when the hook hooks the lifting ring, under the action of the gravity of the diving equipment and in conjunction with the telescopic guide rod on the hook, the hook can slide by itself to the optimal force point on the electric ring (that is, above the center of gravity line of the diving equipment); further, the curved hook structure on the hook can prevent the lifting ring and the hook from being decoupled, thereby further ensuring the safety when lifting the diving equipment.
[0025] In some embodiments, the telescopic guide rod includes a sleeve 6 and a sliding rod 7, one end of the sleeve is fixedly connected to the anastomosis frame, one end of the sliding rod extends into the other end of the sleeve and is slidably connected to the sleeve, and the sleeve can prevent the sliding rod from slipping out of the sleeve; the other end of the sliding rod is fixedly connected to the hook.
[0026] In some embodiments, the sleeve and the slide rod can be implemented as follows: at least one slide groove 8 is provided on the sleeve along its length, extending through the sleeve wall and extending from one end of the sleeve to the other end. Both ends of the slide groove are closed. At least one protrusion 9 is provided on the end of the slide rod that extends into the sleeve. The protrusion passes through the slide groove and extends to the outside of the sleeve. The protrusion prevents the slide rod from slipping off the sleeve. When there are two or more slide grooves, the slide grooves are spaced apart along the circumference of the sleeve, and the protrusions on the slide rod are arranged in a one-to-one correspondence with the slide grooves.
[0027] In some embodiments, at least one spring 10 is positioned between the sleeve and the slide rod. One end of the spring is fixedly connected to the sleeve, and the other end is fixedly connected to the end of the slide rod that is distal to the sleeve. The spring acts as a position limiter for the slide rod, preventing it from sliding out of the sleeve due to excessive speed. Furthermore, after the hook completes its lifting task, the spring returns the hook to its original position for subsequent use. When two or more springs are provided, they are spaced apart along the circumference of the sleeve.
[0028] In some embodiments, a positioning bracket 11 is provided below the telescopic guide rod. The positioning bracket is T-shaped and consists of a horizontal bar and a vertical bar. One end of the vertical bar is fixedly connected to the anastomosis frame, and the other end is fixedly connected to the middle of the horizontal bar along its length, so that the length of the horizontal bar and the length of the anastomosis frame are perpendicular to each other. When the T-shaped positioning bracket of the hoist contacts the improved lifting ring on the diving equipment, it indicates that the hoist has been lowered to the diving equipment and the operator can proceed with subsequent operations.
[0029] In some embodiments, the outer side of the chain is wrapped with a waterproof material layer or coated with a waterproof material layer.
[0030] The lifting device has the following advantages in practical application:
[0031] Step 1: fix the hook on the lifting device on the chain on the hoist;
[0032] Step 2: put the anastomosis frame of the lifting device on the mounting guide rail of the diving equipment, and slowly lower the lifting device with the hoist and the auxiliary chain; at this time, the hook of the lifting device is not stressed during the lowering process and is always in an "inverted" state;
[0033] Step 3: when the T-shaped positioning frame of the lifting device contacts the lifting ring on the diving equipment, it indicates that the lifting device has been lowered to the position of the diving equipment;
[0034] Step 4: control the hoist to lift the chain, and the hook turns over nearly 180 degrees under the pulling of the chain, reliably positions and hooks the lifting ring on the diving equipment; during the lifting process, the hook will automatically "slide" to the best stress point of the lifting ring (the end of the closed end of the lifting ring away from the mounting guide rail, so that the point where the hook hooks the lifting ring is located on the equipment gravity center line of the diving equipment), and the hook-shaped structure on the hook also provides a guarantee for the stable lifting and "non-unhooking" of the diving equipment;
[0035] Step 5: continue to lift the hoist until the diving equipment is successfully lifted out of the water.
[0036] The lifting device has the following advantages in practical application:
[0037] High safety: the installation site of the diving equipment does not need to configure a pair of chains as in the prior art, the lifting device is used only when the diving equipment needs to be lifted out, and does not need to be immersed in water for a long time, completely eliminating the wear and breakage risk caused by long-term underwater immersion of traditional chains; at the same time, the risk of equipment falling and failure in lifting operation is eliminated;
[0038] Precise positioning: compared with the existing three-prong or five-prong hooks on the market, the lifting device of the utility model can have a very high success rate of hooking the equipment at one time, and the operator can achieve it without complex technical operations, having the outstanding advantages of precise positioning, not easy to unhook, and stable lifting;
[0039] High operation efficiency: the use of the lifting device of the utility model greatly saves the lifting operation and other operations caused by frequent inspection of the chain state, reduces the preparation time and operation time before operation, and improves the overall operation efficiency;
[0040] Low operating costs: In actual application, only one set of hoists (with supporting wire ropes) is needed to meet the lifting needs of all diving equipment in the plant. There is no need to configure hoisting equipment for each set of diving equipment, which greatly saves the cost of replacing the lifting chain. It also saves the corresponding operating costs such as equipment failure repair and even underwater salvage operations caused by broken lifting chains.
[0041] Low production cost: Compared with similar products on the market, the hoist of the utility model is designed and developed by the inventor based on actual application conditions. The hoist is compact in shape, simple to manufacture, easy to operate, made of readily available materials, corrosion-resistant, high in strength, has a long service life, and negligible maintenance costs;
[0042] Strong promotional potential: It can be applied to all occasions where diving equipment is fixed by rectangular guide rods. It can also save corresponding equipment investment for newly built sewage treatment plants, and has strong application promotion potential.
[0043] The present invention is not limited to the above-mentioned embodiments. Any structure that is the same as or similar to the above-mentioned embodiments of the present invention is within the protection scope of the present invention.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A diving equipment hoist, characterized in that: The invention comprises an anastomosis frame (1), wherein a slot (2) is provided on one side of the anastomosis frame along its length direction, wherein one end of the slot extends from one end of the anastomosis frame to the other end thereof, and both ends of the slot pass through both ends of the anastomosis frame; both side edges of the slot along its length direction are bent inwardly and continue to extend, so that the anastomosis frame can be slidably connected to the mounting rail on the diving equipment through the slot and can slide along the length direction of the mounting rail; A telescopic guide rod is provided on the anastomosis frame and on a side facing away from the slot opening. The telescopic guide rod has a telescopic end, and the telescopic end can move along the length direction of the telescopic guide rod; the end of the telescopic guide rod facing away from the telescopic end is fixedly connected to the anastomosis frame, and the telescopic end is fixedly connected to a hook (3), and the distance between the hook and the anastomosis frame can be adjusted by the telescopic end of the telescopic guide rod; one end of the hook is a connecting end, fixedly connected to one end of a lifting chain (4), and the other end of the lifting chain is fixedly connected to a lifting device; the other end of the hook is in the shape of a curved hook; An auxiliary chain (5) is also provided on the outside of the anastomosis frame, one end of the auxiliary chain is fixedly connected to the anastomosis frame, and the other end of the auxiliary chain can control the position of the anastomosis frame on the mounting guide rail.
2. The diving equipment hoist according to claim 1, characterized in that: The telescopic guide rod comprises a sleeve (6) and a slide rod (7), one end of the sleeve is fixedly connected to the anastomosis frame, one end of the slide rod extends into the other end of the sleeve and is slidably connected to the sleeve, and the sleeve can prevent the slide rod from slipping out of the sleeve; the other end of the slide rod is fixedly connected to the hook.
3. The diving equipment hoist according to claim 2, characterized in that: At least one slide groove (8) is provided on the sleeve along its length direction, the slide groove passes through the sleeve wall, and one end of the slide groove extends from one end of the sleeve to the other end thereof, and both ends of the slide groove are closed ends; at least one protrusion (9) is provided on the end of the slide rod extending into the sleeve, the protrusion passes through the slide groove and extends to the outside of the sleeve, and the protrusion can prevent the slide rod from slipping off the sleeve.
4. The diving equipment hoist according to claim 2 or 3, characterized in that: At least one spring (10) is also provided between the sleeve and the slide rod, one end of the spring being fixedly connected to the sleeve, and the other end of the spring being fixedly connected to an end of the slide rod away from the sleeve.
5. The diving equipment hoist according to claim 3, characterized in that: When there are two or more slide grooves, the slide grooves are spaced apart along the circumference of the sleeve, and the protrusions on the slide rod are arranged in a one-to-one correspondence with the slide grooves.
6. The diving equipment hoist according to claim 4, characterized in that: When there are two or more springs, the springs are spaced apart and distributed along the circumference of the sleeve.
7. The diving equipment hoist according to claim 1, characterized in that: A positioning frame (11) is further provided below the telescopic guide rod. The positioning frame is T-shaped and consists of a horizontal rod and a vertical rod. One end of the vertical rod is fixedly connected to the anastomosis frame, and the other end is fixedly connected to the middle of the horizontal rod along its length direction, so that the length direction of the horizontal rod is perpendicular to the length direction of the anastomosis frame.