Column suspension type inverter replacing and hoisting device

Abstract

The utility model belongs to the technical field of equipment installation, and particularly relates to a stand column suspension type inverter replacing and hoisting device which comprises a stand column, a stress support is installed on the top of the stand column, and a fixing clamp special for an inverter is connected to the middle of the stand column in a sliding mode. The chain block is installed on the stress support, one end of a steel wire rope of the chain block is connected with a hook through a chain, the hook is used for being hung on a support at the bottom of an inverter, and the other end of the steel wire rope bypasses the chain block to form a hoisting transmission link; an angle adjusting device is arranged on the hook and used for adjusting the angle between the hook and the inverter, so that the hook is matched with the supports with different angles. According to the utility model, the problems of low replacement operation efficiency and high safety risk of a column suspension type inverter in the prior art are solved, and the purposes of reducing the operation and maintenance cost, reducing the working intensity of operation and maintenance personnel, improving the replacement efficiency and guaranteeing the operation safety are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to equipment installation technical field, specifically is a kind of column suspension type inverter replacement hoist device. BACKGROUND

[0002] China's photovoltaic power generation industry is booming, and the additional installed capacity in 2024 has broken through 120GW, among which the string type inverter occupies 68.3% of the market share (data source: China Photovoltaic Industry Association). This type of inverter adopts distributed layout, and presents the characteristics of "three high and three wide" in actual installation: the installation height is usually 2.0±0.5 meters, the single machine weight is in the range of 80-150kg, the number of single project equipment is more than one thousand, and the distribution range is wide, the application environment is different, and the operation and maintenance demand is various.

[0003] In the column suspension type inverter replacement operation, the traditional process exposes many problems. From the operation efficiency, the traditional way needs 4-5 people to operate cooperatively, the operation and maintenance cost is high, the installation time of each device is as long as 200-300 minutes, the daily installation quantity is less than 30 when the construction is scaled, which seriously restricts the engineering progress. In terms of safety, since it involves high-altitude operation, the falling risk level is as high as R4 (extremely high risk), and the industry statistics in 2024 shows that the installation accident accounts for 32% of the total operation and maintenance accidents.

[0004] Therefore, it is necessary to design a column suspension type inverter replacement hoist device to improve the above problems. SUMMARY

[0005] In order to solve the problems of the prior art, the utility model provides a column suspension type inverter replacement hoist device, which comprises a column, a stress support is installed at the top of the column, and a special fixing clamp for inverter is slidably connected in the middle of the column; the stress support is installed with the chain hoist, one end of the steel wire rope of the chain hoist is connected with a hook through a chain, the hook is used for hanging on the support at the bottom of the inverter, and the other end of the steel wire rope is wound around the chain hoist to form a lifting transmission link;

[0006] An angle adjusting device is arranged on the hook for adjusting the angle between the hook and the inverter, so that the hook is adapted to different angle supports;

[0007] Further, the hook is shaped as "J" shape adapted to the contour of the support, the inner side of the hook is arc-shaped and matched with the surface of the support, and the opening width of the hook is slightly larger than the width of the support and is in the shape of a horn mouth.

[0008] Further, limit blocks are arranged on both sides of the hook for limiting the displacement of the hook in the horizontal direction;

[0009] Further, the limiting block is detachable structure, is fixed in the both sides of the hook through bolt or buckle, and the height of limiting block is higher than the height of the hook and support contact place.

[0010] Further, the angle adjusting device comprises a rotating shaft and a rotating plate sleeved on the rotating shaft; the hook comprises a first connecting plate and a second connecting plate, one end of the first connecting plate is connected with the chain, and the other end is connected with the second connecting plate through the rotating shaft; the connecting end of the first connecting plate and the second connecting plate is uniformly provided with a plurality of corresponding threaded holes, and the threaded holes are located on the circumferential side of the rotating shaft; the first connecting plate and the second connecting plate are connected through bolts; the angle between the hook and the inverter is changed by rotating the rotating plate to drive the angle between the first connecting plate and the second connecting plate.

[0011] Further, one side of the second connecting plate towards the bottom of the inverter is an arc surface, which is adapted to the bottom of the inverter, facilitating the connection of the hook; and an anti-skid tooth is arranged at the position where the one side of the second connecting plate contacts with the support, and the anti-skid tooth is a sawtooth structure integrally formed with the hook.

[0012] Further, the hook is a high-strength alloy steel hook.

[0013] The utility model discloses the beneficial effect:

[0014] The utility model discloses a column suspension type inverter replacement hoisting device, which comprises a column, a force support installed at the top of the column, an inverter special fixing clamp slidably connected to the middle of the column, a hand-operated hoist installed on the force support, a hook connected to the hand-operated hoist through a chain at one end of a wire rope of the hand-operated hoist, an angle adjusting device arranged on the hook, and a "J"-shaped hook with an arc-shaped inner side matched with the surface of the support and a trumpet-shaped opening width slightly larger than the width of the support. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a side view of the column suspension type inverter replacement hoisting device.

[0016] Figure 2 It is a front view of the column suspension type inverter replacement hoisting device.

[0017] Figure 3 It is a schematic diagram of the hook structure.

[0018] Figure 4 The utility model limit block structure schematic view;

[0019] Reference signs:

[0020] In the drawing: 1 - stand, 2 - force support, 3 - hand chain block, 4 - hook, 5 - limit block, 6 - second connecting plate, 7 - antiskid tooth, 8 - first connecting plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] Please refer to Figures 1-4 The utility model provides a stand suspension type inverter replacement hoist device,

[0023] Including stand 1, stand 1 top is equipped with force support 2, stand 1 middle part is slidably connected with inverter special fixing clamp, is used for installing inverter and along stand 1 sliding;

[0024] Force support 2 is installed with hand chain block 3, and one end of the wire rope of hand chain block 3 is connected with hook 4 through chain, the hook 4 is used to hang on the support that is inclined to a certain angle downward at the bottom of inverter, and the inverter lifting point is connected;The other end of the wire rope passes through hand chain block 3, forms complete hoisting transmission link, pulls chain along the force direction, changes the directional characteristics of force using hand chain block 3, makes inverter vertical rise, keeps uniform tension in the process, avoids shaking, solves the problems, such as low operation efficiency, high safety risk of stand suspension type inverter replacement operation in prior art, realizes the goal of reducing operation and maintenance cost, reducing the work intensity of operation and maintenance personnel, improving replacement efficiency and ensuring operation safety;

[0025] The hook 4 is shaped as "J" shape that is adapted to the profile of the support, the inner side of the hook 4 is arc-shaped and is attached to the surface of the support, and the opening width of the hook 4 is slightly larger than the width of the support and is in the shape of a horn mouth;

[0026] An angle adjusting device is arranged on the hook 4 for adjusting the angle between the hook 4 and the inverter, so that the hook is adapted to supports of different angles, improving the stability and safety of inverter hoisting;

[0027] It should be noted that the column 1 is made of high-strength aluminum alloy material, which is composed of multiple splicable column bodies. Each column body is connected by a specially designed connecting sleeve. The connecting sleeve has an internal thread, and the ends of the column body are processed with an external thread that matches the connecting sleeve. The column bodies are stably connected by rotating and tightening. The cross section of the column body is circular, and the diameter is designed to be [X] centimeters according to the actual load bearing requirement, to ensure sufficient strength. On the side of the column, there are several guide grooves uniformly distributed along the axial direction. The width of the guide groove is [Y] centimeters, and the depth is [Z] centimeters, which is used to cooperate with the special fixing clamp for inverters. Function: The column serves as the support main body of the entire lifting device, and plays an important role in fixing the force support and the entire lifting system at the working position. Its splicable structure design facilitates flexible assembly in different height requirement working scenes, and meets the diversified installation environment. The guide grooves on the side provide sliding tracks for the special fixing clamp for inverters, ensuring that the inverters can move smoothly along the column during lifting and installation, preventing deviation or shaking.

[0028] The force support 2 is in the shape of "L" as a whole and is made of high-strength alloy steel. Its horizontal part is fixedly connected with the top of the column by welding, and the welding part is strictly detected by flaw detection to ensure the connection strength. The length of the horizontal part is [L1] centimeters, and two installation holes are provided above it for installing the chain hoist. The length of the vertical part is [L2] centimeters, and a reinforcing rib is provided near the bottom to enhance the stability of the support when bearing tension. The reinforcing rib is in triangular structure and is connected with the horizontal part and the vertical part by welding; the force support 2 function: the force support plays a bridge role in transmitting the tension of the chain hoist to the column. Its "L" shaped structure design can effectively convert the vertical tension into pressure on the column, making the stress of the entire lifting system more reasonable. The installation hole facilitates the installation and disassembly of the chain hoist, improving the assembly and maintenance efficiency of the device. The reinforcing rib further enhances the carrying capacity of the support, ensuring that the support will not deform or be damaged when lifting heavy objects such as inverters.

[0029] The special fixing clamp 3 for inverters is composed of two symmetrical clamping arms and a connecting shaft. The clamping arms are made of high-strength engineering plastic with metal reinforcing plates embedded inside to improve their strength and wear resistance. The inner side of the clamping arms is provided with an arc-shaped groove that matches the shape of the inverter housing, and a rubber non-slip pad is attached inside the groove to increase the friction with the inverter housing and prevent the inverter from sliding during fixing. One end of the clamping arm is connected to a sliding sleeve through a connecting shaft, and the sliding sleeve can freely slide in the guide groove of the stand. At the other end of the clamping arm, an adjusting bolt is provided, and by rotating the adjusting bolt, the opening distance between the two clamping arms can be changed to adapt to inverters of different sizes. The main function of the special fixing clamp for inverters is to securely fix the inverter and ensure its safety during lifting and installation. The arc-shaped groove and rubber non-slip pad on the inner side of the clamping arm can closely fit the inverter housing, providing reliable friction and support. By adjusting the opening distance of the clamping arms with the adjusting bolt, the clamp can be adapted to various models of inverters, improving the versatility of the device. The cooperation of the sliding sleeve and the stand guide groove allows the inverter to be smoothly lifted along the stand, facilitating installation and replacement operations.

[0030] It should be noted that the overall structure: the lifting device is mainly composed of a special fixing clamp for inverters, a hand-operated hoist 3, a stand 1 stress support 2 and a hook 4. The hook 4, as a key component, is used to hang on the 35° downward inclined support at the bottom of the inverter, and its unique design ensures stable connection with the support. The design of the hook 4: the hook 4 adopts a "J" shape design that matches the profile of the support, and the inner side of the hook 4 is arc-shaped to fit the surface of the support. This design can effectively increase the contact area between the hook 4 and the support, evenly distribute the lifting pressure, and prevent local stress concentration from damaging the hook 4 and the support. The opening width of the hook 4 is slightly larger than the width of the support, and it is in the shape of a flared mouth, which facilitates quick and accurate installation on the support, while avoiding shaking or falling during lifting. Limiting blocks 5 are provided on both sides of the hook 4 to limit the horizontal displacement of the hook 4, further enhancing the stability during lifting. Anti-slip teeth 7 or anti-slip pads are provided at the contact between the hook 4 and the support. The anti-slip teeth 7 are a sawtooth structure integrated with the hook 4, and the anti-slip pads are made of rubber and fixed at the contact by glue or bolts. Both of them can significantly increase the friction between the hook 4 and the support, effectively preventing the hook 4 from sliding during lifting. The hook 4 is made of high-strength alloy steel, which has high strength and toughness and can withstand the large tension and impact forces during lifting. At the same time, the surface of the hook 4 is galvanized or coated with anti-corrosion paint to improve its corrosion resistance in complex outdoor environments and prolong its service life.

[0031] Further, the hook 4 is provided with limiting blocks 5 on both sides to limit the horizontal displacement of the hook 4, further enhancing the stability during lifting.

[0032] Further, the limiting block 5 is a detachable structure, which is fixed on both sides of the hook 4 through bolts or buckles, and the height of the limiting block 5 is higher than the height of the contact position of the hook 4 and the support;

[0033] Further, the angle adjusting device comprises a rotating shaft and a rotating plate sleeved on the rotating shaft, the hook 4 is an angle-adjustable connecting component, the hook 4 comprises a first connecting plate 8, one end of the first connecting plate 8 is connected with the chain, the other end of the first connecting plate 8 is connected with a second connecting plate 6 through the rotating shaft, the other end of the first connecting plate 8 and one end of the second connecting plate 6 are uniformly provided with a plurality of corresponding threaded holes, and the threaded holes are located on the circumferential side of the rotating shaft, the other end of the first connecting plate 8 and one end of the second connecting plate 6 are connected through bolts, and the angle between the first connecting plate 8 and the second connecting plate 6 is changed by rotating the rotating plate to change the angle between the hook 4 and the inverter;

[0034] Further, one side of the second connecting plate 6 towards the bottom side of the inverter is an arc surface for adapting to the bottom of the inverter to realize hooking, and an anti-skid tooth 7 is further arranged at the contact position of the one side of the second connecting plate 6 and the support, the anti-skid tooth 7 is a sawtooth structure integrally formed with the hook 4,

[0035] It should be noted that the angle between the first connecting plate 8 and the second connecting plate 6 can be flexibly changed to change the angle between the hook 4 and the inverter, so as to ensure that the hook 4 is perfectly adapted to the support with a downward inclination of 35° or other angles at the bottom of the inverter, and further improve the stability and safety of lifting.

[0036] Further, the hook is made of high-strength alloy steel, and the surface of the hook is galvanized or coated with anti-corrosion paint;

[0037] The use method of the column suspension type inverter replacement hoisting device comprises the following steps:

[0038] The column force support 2 is fixed at the top end of the column, it is confirmed that the column support is stable, and it is checked whether the anchor point welding position is intact without damage;

[0039] The hand-operated hoist 3 is installed at the anchor point of the support, and it is checked whether the pulley and the chain are intact without damage;

[0040] The special fixing clamp for inverter is installed, it is ensured that the installation is fastened, and there is no risk of falling during lifting;

[0041] The angle of the hook 4 is adjusted through the angle adjusting device, the hook 4 is adapted to the support with a downward inclination of 35° at the bottom of the inverter, the hook 4 is hung on the support, it is ensured that the anti-skid tooth 7 or the anti-skid pad is fully contacted with the support, and the limiting block 5 on both sides plays a limiting role on the hook 4;

[0042] The chain is connected to the inverter hanging point at one end and connected to the steel wire rope at the other end, the steel wire rope is wound around the chain block 3 to form a complete lifting transmission link; the chain is pulled along the force direction, the chain block 3 is used to change the force direction characteristics, so that the inverter vertically rises, and the pulling force is uniform during the process to avoid shaking;

[0043] After lifting to the target height, the position of the inverter is fine-tuned, the inverter is stably lowered, and placed on the ground;

[0044] According to the above process, the inverter to be installed is fixed, stably pulled up to the installation height, and the inverter is installed;

[0045] Specific implementation: device manufacturing and installation: according to the design requirements, select the appropriate specification of high-strength alloy steel to make the hook 4. In the manufacturing process, ensure that the shape and size of the hook 4 meet the design standards, especially the fitting degree of the inner arc shape and the support, the opening width and the bending degree of the "J" shape. The surface of the hook 4 is galvanized or coated with anti-corrosion paint to enhance its corrosion resistance. According to the design requirements, the limiting block 5 is fixed on both sides of the hook 4 through bolts or buckles, and attention is paid to the height and position of the limiting block 5 to ensure that it can effectively limit the horizontal displacement of the hook 4. For the anti-skid teeth 7, the sawtooth structure is integrally formed at the part where the hook 4 contacts the support; for the anti-skid pad, select the appropriate thickness and hardness of the rubber material, and firmly fix it at the contact place through glue or bolts. The connecting components of the angle adjusting device are manufactured to ensure good adjustability and stability. The connecting components can adopt a telescopic rod structure, which realizes length adjustment through threads or clamping; or adopt a joint structure, which changes the angle by rotating the joint. One end of the connecting component is rotationally connected with the hook 4, and the other end is connected with the inverter special fixing clamp to ensure firm connection and flexible angle adjustment. After manufacturing, according to the steps of the use method, the column 1 stress support 2, chain block 3, inverter special fixing clamp are installed in turn, and the hook 4 is connected with the inverter to ensure that each component is firmly installed and the angle is adjusted properly.

[0046] Use process: when replacing the column suspension type inverter using the lifting device, the operator strictly follows the operation process. When fixing the force support 2 of the fixed column 1, use professional tools to ensure that the support is tightly connected with the top end of the column, check the firmness of the anchor point welding, and ensure that there is no looseness or damage. When installing the hand-operated hoist 3, carefully check the condition of the pulley and chain to ensure that they can work normally. When installing the special fixing clamp for inverter, use bolts or other fixing methods to firmly install it on the inverter, check the fixing effect, and avoid looseness. Adjust the angle of the hook 4 through the angle adjusting device to adapt to the support at the bottom of the inverter. Hang the hook 4 on the support, ensure that the anti-slip teeth 7 or anti-slip pads are in full contact with the support, and the limiting blocks 5 on both sides play a limiting role. When connecting the chain, ensure that one end of the chain is firmly connected with the inverter lifting point, and the other end is correctly wound around the hand-operated hoist 3. During the lifting process, the operator uniformly pulls the chain, closely observes the lifting state of the inverter, ensures that it rises vertically, and avoids shaking. When the inverter is lifted to the target height, carefully adjust its position, and then smoothly place it on the ground or the installation position. During the whole operation process, the operator strictly follows the safety specifications and wears personal protective equipment to ensure the safety of the operation.

[0047] It is worth noting that by setting the column, a force support is installed at the top of the column, and a special fixing clamp for inverter is slidably connected in the middle of the column; the force support is installed with the hand-operated hoist, one end of the steel wire rope of the hand-operated hoist is connected with the hook through the chain, the angle adjusting device is arranged on the hook, the shape of the hook is "J" shape which adapts to the contour of the support, the inner side of the hook is arc-shaped which is matched with the surface of the support, the opening width of the hook is slightly larger than the width of the support and is in the shape of a trumpet mouth, the hook is used to hang on the support at the bottom of the inverter, and the other end of the steel wire rope is wound around the hand-operated hoist to form a lifting transmission link, effectively solving the problems of low efficiency and high safety risk in the replacement operation of the column suspension type inverter in the prior art. The hand-operated hoist changes the direction of force, makes the inverter rise vertically, and keeps the pulling force uniform during lifting to avoid shaking. The device can reduce the operation and maintenance cost, reduce the work intensity of the operation and maintenance personnel, improve the replacement efficiency and ensure the safety of the operation.

[0048] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A column-mounted inverter replacement and hoisting device, characterized in that, The utility model provides a lifting device for inverter, including stand, force support is installed on the top of stand, special fixing clamp of inverter is connected with in the middle of stand slidingly, force support is installed with hand chain block on, the steel wire rope one end of hand chain block is connected with hook through chain, the hook is used to hang on the support of inverter bottom, and the other end of steel wire rope passes through hand chain block and forms hoisting drive link; Angle adjusting device is arranged on the hook, and the angle between the hook and the inverter is adjusted, so that the hook is adapted to the support with different angles.

2. The pole-mounted inverter replacement hoist of claim 1, wherein, The hook is shaped as a "J" shape that is adapted to the profile of the support, the inner side of the hook is arc-shaped and fits the surface of the support, the opening width of the hook is slightly larger than the width of the support and is shaped as a horn mouth.

3. The pole-mounted inverter replacement hoist of claim 1, wherein, Limiting blocks are arranged on both sides of the hook to limit the displacement of the hook in the horizontal direction.

4. The pole-mounted inverter replacement hoist of claim 3, wherein, The limiting blocks are detachable structures and are fixed on both sides of the hook by bolts or buckles, and the height of the limiting blocks is higher than the height of the contact part of the hook and the support.

5. The pole-mounted inverter replacement hoist of claim 4, wherein, The angle adjusting device includes a rotating shaft and a rotating plate sleeved on the rotating shaft, the hook includes a first connecting plate and a second connecting plate, one end of the first connecting plate is connected with the chain, the other end is connected with the second connecting plate through the rotating shaft, the connecting ends of the first connecting plate and the second connecting plate are evenly provided with a plurality of thread holes, the thread holes are located on the circumferential side of the rotating shaft, the first connecting plate and the second connecting plate are connected by bolts, and the angle between the first connecting plate and the second connecting plate is changed by rotating the rotating plate to change the angle between the hook and the inverter.

6. The pole-mounted inverter replacement hoist of claim 5, wherein, The side of the second connecting plate facing the bottom of the inverter is an arc surface for adapting to the bottom of the inverter to facilitate the connection of the hook, and the anti-skid teeth are arranged on the side of the second connecting plate in contact with the support.

7. The pole-mounted inverter replacement hoist of claim 1, wherein, The hook is made of high-strength alloy steel.

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