A lifting hook for lifting a GIS high-voltage shell

Abstract

The utility model discloses a kind of lifting hooks for hoisting GIS high-pressure shell processing, including lifting seat, the side of lifting seat is rotatably arranged with carousel seat, carousel seat is rotatably arranged with multiple screw rods on the side away from lifting seat, multiple screw rods are evenly arranged in circumference, multiple support arms corresponding to screw rod are further slidably arranged on carousel seat, one end of support arm is connected by screw thread and screw rod cooperation, the other end of support arm is equipped with hook claw;The inside end of screw rod is coaxially fixed with transmission bevel gear, two transmission bevel gears between adjacent are driven by adjusting bevel gear cooperation, the rotation axis of adjusting bevel gear is fixed with worm wheel, carousel seat is provided with the worm gear of being cooperated with worm wheel, the rotation axis of worm gear passes through carousel seat and extends to the outside of carousel seat, located the outside of carousel seat is equipped with the adjusting knob fixed with worm gear. GIS high-pressure shell after hoisting can rotate freely, it is convenient for operating personnel to process each surface of shell, significantly improve operating efficiency and reduce labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of GIS high-pressure housing production technology, specifically a hook for hoisting and processing GIS high-pressure housings. Background Technology

[0002] The high-voltage housing of GIS (Gas Insulated Switchgear) is a core component that ensures the insulation, sealing, and mechanical strength of high-voltage switchgear in power systems. It is mainly used in high-voltage / ultra-high-voltage power scenarios of 35kV and above. The materials are mainly aluminum alloy and stainless steel. The core requirements are high airtightness, high mechanical strength, corrosion resistance, and high dimensional accuracy.

[0003] For certain types of GIS high-voltage housings (specifically, small and medium-sized GIS high-voltage housings with a diameter not exceeding 100cm and a weight not exceeding 500kg), lifting assistance is required during the production process. The work involves the following steps: 1. Pre-treatment of the aluminum alloy GIS high-pressure housing: cleaning, removing surface oil and oxide scale with alkaline cleaning agent, followed by water washing and drying to ensure surface cleanliness.

[0004] 2. The stainless steel GIS high-pressure housing undergoes pretreatment, including pickling and passivation, to remove the surface oxide layer, form a passivation film, and improve corrosion resistance.

[0005] 3. Aluminum alloy GIS high-pressure housing, sprayed with polyurethane or epoxy resin coating (thickness ≥80μm) after anodizing to further enhance UV resistance and salt spray resistance (suitable for outdoor scenarios).

[0006] 4. Visual inspection: Check that the surface coating is free of peeling or scratches, the welds are smooth, and the markings are clear.

[0007] 5. Packaging: Wooden crates are used, with foam or rubber cushioning pads inside to prevent deformation from collisions.

[0008] The above describes some types of GIS high-pressure enclosures that require lifting with hooks during production. This method is not applicable to large or extra-large GIS high-pressure enclosures exceeding these specifications. Current technology typically uses simple hooks to lift such enclosures. However, for operations requiring comprehensive treatment of the GIS high-pressure enclosure, such as cleaning, pickling and passivation, spraying, and visual inspection, traditional lifting methods are inconvenient for working on surfaces like the top and bottom, which are difficult to access directly. For example, during visual inspection, workers must inspect the front and rear sides of the enclosure before using climbing equipment to inspect the top or bending over to inspect the bottom.

[0009] The above-mentioned traditional lifting methods require operators to repeatedly change the working angle, which makes the operation troublesome for the operators. At the same time, the operation actions such as climbing or bending over are highly dangerous and have low safety. Utility Model Content

[0010] The purpose of this utility model is to provide a lifting hook for hoisting the processing of GIS high-pressure shells, so as to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, this utility model provides the following technical solution: a hook for hoisting the processing of GIS high-pressure shells, comprising a lifting base, a turntable seat rotatably disposed on one side of the lifting base, and multiple screws rotatably disposed on the side of the turntable seat away from the lifting base, the multiple screws being evenly arranged in a circular pattern; multiple support arms corresponding one-to-one with the screws are also slidably disposed on the turntable seat, one end of the support arm being threaded to the screw, and the other end of the support arm being provided with a hook claw; a transmission bevel gear is coaxially fixed to the inner end of the screw, and two adjacent transmission bevel gears are driven by an adjusting bevel gear, a worm gear is coaxially fixed to the rotating shaft of the adjusting bevel gear, a worm cooperating with the worm gear is disposed on the turntable seat, the rotating shaft of the worm passing through the turntable seat and extending to the outer side of the turntable seat, and an adjusting knob fixed to the worm is disposed on the outer side of the turntable seat.

[0012] Preferably, the turntable base is configured as a disc-shaped structure, and a connecting shaft is coaxially fixed on the side of the turntable base facing the hanging seat. The hanging seat is provided with a bearing seat that cooperates with the connecting shaft.

[0013] Preferably, the turntable base is provided with multiple extension arms in the circumferential direction, each extension arm corresponding to a screw, and the extension direction of the extension arm is consistent with the extension direction of the corresponding screw. A linear guide rail is provided on each extension arm, and the extension direction of the linear guide rail is consistent with the extension direction of the corresponding extension arm. A slider is fixed on the support arm, and the support arm is slidably mounted on the corresponding linear guide rail via the slider.

[0014] Preferably, the support arm is configured as a cylindrical structure, and the end of the support arm facing the screw has a threaded groove that mates with the screw. The hook is fixed to the top of the support arm and extends away from the turntable seat.

[0015] Preferably, the adjusting knob is cylindrical, coaxially arranged with the worm gear, and has a countersunk hole at the top.

[0016] Preferably, the turntable base is also provided with a protective shell.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the rotating connection design between the turntable base and the lifting base, allows the GIS high-pressure shell to rotate freely after hoisting, which facilitates the operation of various surfaces of the shell by the operators, reduces the need for frequent adjustment of the working position, significantly improves the work efficiency and reduces the labor intensity.

[0018] 2. This utility model, by setting adjustable support arms and hooks, can adapt to GIS high-pressure shell connection ports of different sizes, thus improving the versatility of hoisting operations.

[0019] 3. This utility model adopts a worm gear transmission mechanism to ensure that the support arm will not retract due to external force during the hoisting process, thereby enhancing the reliability of the hoisting process. At the same time, the extension and retraction of the support arm can be completed through simple manual adjustment, and the structure is simple and easy to maintain. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 (Front view); Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 (Reverse view); Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a plan view of the internal structure of this utility model; Figure 5 This is a diagram illustrating how the present utility model is used.

[0021] In the picture: 1-Hanging base, 2-Turntable base, 21-Connecting shaft, 22-Extension arm, 23-Protective shell, 3-Transmission bevel gear, 4-Screw, 5-Support arm, 6-Hook, 7-Adjusting bevel gear, 8-Worm, 81-Adjusting knob, 9-Worm wheel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4As shown, a lifting hook for hoisting GIS high-pressure shell processing includes a lifting base 1. A turntable seat 2 is rotatably mounted on one side of the lifting base 1. Multiple screws 4 are rotatably mounted on the side of the turntable seat 2 away from the lifting base 1. The multiple screws 4 are evenly arranged in a circular pattern. Multiple support arms 5 corresponding one-to-one with the screws 4 are also slidably mounted on the turntable seat 2. One end of the support arm 5 is threaded to the screw 4, and the other end of the support arm 5 is provided with a hook 6. The inner end of the screw 4 (with multiple screws 4 as the inner end of the turntable seat 1) is also provided with a hook 6. A transmission bevel gear 3 is coaxially fixed at one end of the screw 4 (the inner end). Two adjacent transmission bevel gears 3 are connected by an adjusting bevel gear 7. A worm gear 9 is coaxially fixed on the shaft of the adjusting bevel gear 7. A worm 8 that cooperates with the worm gear 9 is provided on the turntable seat 2. The shaft of the worm 8 passes through the turntable seat 2 and extends to the outside of the turntable seat 2 (the side of the turntable seat 2 facing away from the worm gear 9 is the outside). An adjusting knob 81 that is fixed to the worm 8 is provided on the outside of the turntable seat 2.

[0024] Specifically, in this embodiment, the turntable seat 2 is configured as a disc-shaped structure, and a connecting shaft 21 is coaxially fixed on the side of the turntable seat 2 facing the hanging seat 1. The hanging seat 1 is provided with a bearing seat that cooperates with the connecting shaft 21.

[0025] In detail, both the turntable base 2 and the lifting base 1 are made of metal materials, such as stainless steel. The connecting shaft 21 is preferably integrally formed with the turntable base 2 through casting or other methods. Alternatively, the connecting shaft 21 can be non-integrated with the turntable base 2, and then fixed to the turntable base 2 by welding. The bearing housing on the lifting base 1 is preferably a radial bearing to meet the radial load requirements of the corresponding bearing housing when using this device to lift the GIS housing. Furthermore, the connecting shaft 21 and the bearing housing on the lifting base 1 are connected by an interference fit. This interference fit connection between the shaft and the bearing housing is a conventional technology and will not be elaborated upon here or in the following descriptions of interference fits.

[0026] In this embodiment, the plurality of screws 4 are arranged in a uniform circular pattern along the axis of the turntable seat 2. The surface of the turntable seat 2 is provided with bearing seats (not shown in the figure) corresponding one-to-one with the plurality of screws 4. The screws 4 are rotatably mounted on the corresponding bearing seats by means of interference fit. The bearing seats that cooperate with the screws 4 are preferably axial bearings to meet the axial load requirements of the bearings that cooperate with the screws 4 when the GIS shell is lifted by hooking with this device.

[0027] In this embodiment, the surface of the turntable base 2 is provided with bearing seats (not shown in the figure) corresponding to the plurality of adjusting bevel gears 7 one by one. The rotating shaft of the adjusting bevel gear 7 is rotatably mounted on the corresponding bearing seat by means of interference fit. The bearing seat that cooperates with the adjusting bevel gear 7 is preferably an axial bearing to meet the axial load force requirement of the bearing that cooperates with the adjusting bevel gear 7 when the GIS shell is lifted by hooking with this device.

[0028] Specifically, in this embodiment, the turntable base 2 is provided with multiple extension arms 22 in the circumferential direction. Each extension arm 22 corresponds one-to-one with a screw 4, and the extension direction of the extension arm 22 is consistent with the extension direction of the corresponding screw 4. A linear guide rail is provided on each extension arm 22, and the extension direction of the linear guide rail is consistent with the extension direction of the corresponding extension arm 22. A slider is fixed on the support arm 5, and the support arm 5 is slidably mounted on the corresponding linear guide rail via the slider. Using linear guide rails and sliders to achieve a sliding connection between two structures is a conventional technique, and the specific principle will not be elaborated here.

[0029] Preferably, in this embodiment, the support arm 5 is configured as a cylindrical structure, and the end of the support arm 5 facing the screw 4 is provided with a threaded groove that cooperates with the screw 4. The hook 6 is fixed to the top of the support arm 5 and extends away from the turntable seat 2.

[0030] Specifically, in this embodiment, the adjusting knob 81 is cylindrical and coaxially arranged with the worm gear 8. The top of the adjusting knob 81 has a square countersunk hole, preferably a hexagonal countersunk hole. Thus, by inserting an Allen wrench into the countersunk hole and turning the Allen wrench to adjust the adjusting knob 81, the worm gear 8 will rotate.

[0031] Furthermore, a protective shell 23 is also provided on the turntable base 2. The protective shell 23 covers the side of the turntable base 2 where the transmission bevel gear 3, screw 4, adjusting bevel gear 7, and other components are installed, providing a safety protection function. The protective shell 23 is preferably fixedly connected to the turntable base 2 in a detachable manner, such as by bolt connection.

[0032] Working principle: At least two hooks are used, and they are connected to the boom of an external lifting device (usually a gantry crane in the GIS high-pressure shell production workshop) via ropes. The connecting ropes are generally steel wire ropes, and the specific connection point between the rope and the hook is the lifting base 1, which has a connection hole where the rope is secured.

[0033] Before lifting, first confirm whether multiple hooks 6 can simultaneously extend into the interior of the GIS high-pressure housing to be lifted. If multiple hooks 6 can simultaneously extend into the interior of the GIS high-pressure housing, then insert all hooks 6 into the connection ports of the GIS high-pressure housing (e.g., Figure 5 (As shown). Then, insert a suitable Allen wrench into the countersunk hole corresponding to any of the adjustment knobs 81. Turn the adjustment knob 81 with the Allen wrench. As the adjustment knob 81 rotates, it drives the worm gear 8 to rotate. The worm gear 8 drives the worm wheel 9 and the adjusting bevel gear 7 to rotate. The rotating adjusting bevel gear 7 drives the two adjacent transmission bevel gears 3 to rotate. These two rotating transmission bevel gears 3, in turn, drive the other corresponding adjacent transmission bevel gears 3 to rotate through the remaining corresponding adjacent adjustment bevel gears 7. Thus, all the transmission bevel gears 3 rotate synchronously in the same direction. When the transmission bevel gears 3 rotate, they drive the corresponding screw 4 to rotate. Under the action of the screw, the corresponding support arm 5 moves along the screw 4. Finally, all the support arms 5 simultaneously extend outward or retract inward. The direction of extension or retraction is adjusted according to the rotation direction of the adjustment knob 81. Here, all support arms 5 are controlled to extend outward until all the hooks 6 abut against the inner wall of the GIS high-pressure housing connection port.

[0034] Subsequently, repeat the above operation to insert the claw 6 of the other hook into the other GIS high-pressure housing connection port, and make the corresponding claw 6 abut against the inner wall of the GIS high-pressure housing connection port, thus completing the lifting preparation work. It should be noted that the two GIS high-pressure housing connection ports to be hooked are arranged opposite each other to ensure the balance of the GIS high-pressure housing when it is lifted.

[0035] The lifting device then begins lifting, using ropes to pull up the hook, which, under the hooking action of the claw 6, lifts the GIS high-pressure casing.

[0036] After being lifted, the GIS high-pressure housing can rotate around the connecting shaft 21, facilitating operations such as cleaning, pickling and passivation, spraying, and visual inspection by workers. Workers can perform these operations without repeatedly adjusting their working angle. After completing their work on the accessible GIS high-pressure housing, workers simply rotate the housing around the connecting shaft 21 to bring the unworked area within their reach before continuing their work.

[0037] It is important to note that when rotating the GIS high-pressure housing, the housing itself should be rotated directly first to obtain the longest possible rotational torque. Furthermore, because the GIS high-pressure housing rotates around the connecting shaft 21 and the smooth bearing seat, the rotational resistance is very small. Therefore, even with a 500kg GIS high-pressure housing with a diameter of 100cm, the torque required to rotate a 500kg object under the smooth bearing is 25-50N (50cm).

[0038] The use of worm gear and worm shaft transmission can effectively prevent the support arm 5 from retracting, play a role in one-way transmission, and improve the stability of the hook 6 after lifting the GIS high-pressure shell.

[0039] After the operation is completed, the GIS high-pressure housing is lowered by the crane. Then, the adjustment knob 81 is reversed to disengage the hook 6 from the inner wall of the GIS high-pressure housing and remove the hook.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lifting hook for hoisting and processing GIS high-pressure housings, characterized in that: The device includes a hanging base (1), a turntable seat (2) rotatably mounted on one side of the hanging base (1), and multiple screws (4) rotatably mounted on the side of the turntable seat (2) away from the hanging base (1). The multiple screws (4) are evenly arranged in a circular pattern. Multiple support arms (5) corresponding one-to-one with the screws (4) are also slidably mounted on the turntable seat (2). One end of the support arm (5) is connected to the screw (4) by a thread, and the other end of the support arm (5) is provided with a hook (6). A transmission bevel gear (3) is coaxially fixed on the inner end of the turntable. Two adjacent transmission bevel gears (3) are driven and engaged by an adjusting bevel gear (7). A worm gear (9) is coaxially fixed on the rotating shaft of the adjusting bevel gear (7). A worm (8) that engages with the worm gear (9) is provided on the turntable seat (2). The rotating shaft of the worm (8) passes through the turntable seat (2) and extends to the outside of the turntable seat (2). An adjusting knob (81) that is fixed to the worm (8) is provided on the outside of the turntable seat (2).

2. The lifting hook for hoisting and processing GIS high-pressure shells according to claim 1, characterized in that: The turntable seat (2) is configured as a disc-shaped structure. A connecting shaft (21) is coaxially fixed on the side of the turntable seat (2) facing the hanging seat (1). A bearing seat that cooperates with the connecting shaft (21) is provided on the hanging seat (1).

3. A lifting hook for hoisting and processing GIS high-pressure housings according to claim 2, characterized in that: The turntable base (2) is provided with multiple extension arms (22) in the circumferential direction. Each extension arm (22) corresponds to a screw (4), and the extension direction of the extension arm (22) is consistent with the extension direction of the corresponding screw (4). A linear guide rail is provided on the extension arm (22), and the extension direction of the linear guide rail is consistent with the extension direction of the corresponding extension arm (22). A slider is fixed on the support arm (5), and the support arm (5) is slidably mounted on the corresponding linear guide rail by the slider.

4. A lifting hook for hoisting and processing GIS high-pressure housings according to claim 1, characterized in that: The support arm (5) is configured as a cylindrical structure. The end of the support arm (5) facing the screw (4) has a threaded groove that matches the screw (4). The hook (6) is fixed to the top of the support arm (5) and extends away from the turntable seat (2).

5. A lifting hook for hoisting and processing GIS high-pressure housings according to claim 1, characterized in that: The adjusting knob (81) is cylindrical and is arranged coaxially with the worm gear (8). The top of the adjusting knob (81) is provided with a square countersunk hole.

6. A lifting hook for hoisting and processing GIS high-pressure housings according to claim 1, characterized in that: The turntable base (2) is also provided with a protective shell (23).

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