A gas box hoisting structure for ring main unit and its installation method and use method

Abstract

The present invention discloses an air box hoisting structure for a ring network cabinet, and an installation method and a use method thereof. The structure is provided with a rotatable lifting part and a blocking part. During installation, the rotatable lifting part is hooked with a first through slot on the air box, and then limited by the blocking part, so that the rotatable lifting part can be reliably connected to the air box for easy lifting. During use, the rotatable lifting part is hooked so that the air box is lifted at the same time. After the lifting is completed, the rotatable lifting part is rotated by an angle so that the position of the rotatable lifting part can be changed, and basically no extra space on the top of the air box side plate is occupied, and no installation of other component structures is affected. The structure has good operational flexibility and is also convenient to replace. Thus, the technical problems that the lifting ears are in a fixed state, which makes replacement inconvenient, occupies extra space on the top of the air box side plate, affects the installation of other component structures, and has poor operational flexibility are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of air boxes for ring main units, in particular to an air box hoisting structure for a ring main unit and an installation method and a use method thereof. Background Art

[0002] Ring main unit is a set of high-voltage switchgear installed in a steel plate metal cabinet, or an electrical device made into an assembled interval ring main unit. Its core part uses load switches and fuses. It has the advantages of simple structure, small size, low price, and can improve power supply parameters and performance as well as power supply safety. It is widely used in the power industry.

[0003] Among them, the ring network cabinet needs to be hoisted during the installation process, and the hoisting is usually achieved by relying on the lifting ears on its gas box. The method of setting the lifting ears in the current prior art is usually to weld one end of the lifting ear to the gas box side panel, and the other end protrudes outside the top of the gas box side panel. In this structure, the lifting ear and the gas box side panel are in a fixed state. After the lifting ear is damaged after repeated use, it is inconvenient to replace it. Moreover, the lifting ear occupies extra space on the top of the gas box side panel. When installing other component structures, it is necessary to avoid the lifting ear, and the operating flexibility is poor. Summary of the invention

[0004] In view of the above-mentioned deficiencies existing in the related art, the object of the present invention is to provide a gas box lifting structure for a ring main unit and an installation method and a use method thereof, so as to solve the technical problems in the related art that the lifting ears are in a fixed state, which is inconvenient to replace, occupies extra space on the top of the gas box side panel, affects the installation of other component structures, and has poor operational flexibility.

[0005] The technical solution to achieve the purpose of the present invention is: a gas box hoisting structure for a ring main unit, comprising:

[0006] At least two rotatable lifting parts, one end of each rotatable lifting part is hooked on a first through slot on the air box and passes through the first through slot, and the other end of each rotatable lifting part is away from the first through slot;

[0007] And a blocking part, which is used to form a blockage and limit the rotatable lifting part after the rotatable lifting part rotates to an angle.

[0008] Further: the rotatable lifting part includes: a first hook member, the cross section of which is an "L"-shaped structure, one end of which is hooked on the first through slot and passes through the first through slot, and the other end of which can protrude from the top of the air box and protrude from the part of the top of the air box, and a first through hole is also provided;

[0009] and a stopper connected to one end of the first hooking member, wherein the length of the stopper is greater than the length of the first through slot, and is used to prevent the first hooking member from sliding out of the first through slot;

[0010] The first hook member can rotate at an angle with the first through slot as a rotation center.

[0011] Further: the blocking portion includes: a first countersunk screw, passing through the second through hole on the side wall of the air box, and passing through a first countersunk through hole on the first hook;

[0012] and a first nut connected to the first countersunk screw to lock the first hook and the first countersunk screw;

[0013] The length of the first countersunk screw is greater than the width of the first through slot.

[0014] Further: the rotatable lifting part includes: a second hook member, the cross section of which is an "L"-shaped structure, one end of which is hooked on the first through slot and passes through the first through slot, and the other end can protrude from the top of the air box and protrude from the part on the top of the air box, and a third through hole is also provided.

[0015] Further: the blocking part includes: a bolt member passing through the side wall of the air box and the second hook member;

[0016] a second nut connected to the bolt member;

[0017] and a spring which is sleeved on the bolt member and arranged between the second hook member and the second nut.

[0018] A method for installing a gas box hoisting structure for a ring main unit, comprising: passing the rotatable lifting part through the first through-slot from one end of the first hook member having a first through-hole;

[0019] Install the blocking part, install the first countersunk screw in the first countersunk through hole on the first hook, and connect the first countersunk screw to the first hook by the first nut, and lock it with the first hook;

[0020] Pull one end of the first hook and rotate it 90 degrees, so that the limiting member abuts against the outer wall of the air box to form a blockage, so that the first through hole protrudes from the top of the air box, which is convenient for lifting.

[0021] A method for installing a gas box hoisting structure for a ring main unit, comprising: passing the second hook hanging member, hooking one end of the rotatable lifting part on a first through slot on the gas box and passing through the first through slot, and protruding the other end from the top of the gas box, so that the third through hole protrudes from the top of the gas box, which is convenient for lifting;

[0022] Install the blocking part, pass the bolt member through the side wall of the air box and the second hook member, put the spring on the bolt member, and then connect it to the bolt member through the second nut to compress the spring. The spring is compressed between the second hook member and the second nut.

[0023] A method for using a gas box hoisting structure for a ring main unit, comprising: during hoisting, hoisting the gas box through the first through hole on the first hook hanging member;

[0024] After the lifting is completed, the first hook and the limit member are rotated 90° with the first through groove as the rotation center, so that the part of the first hook protruding from the top of the air box is in a horizontal state, and the first countersunk screw and the first nut are in a vertical state to form a blockage.

[0025] A method for using a gas box hoisting structure for a ring main unit, comprising: during hoisting, hoisting the gas box through the third through hole on the second hook hanging member;

[0026] After the lifting is completed, pull the second hook and pull one end of the second hook out of the first through groove. The spring is compressed, and the second hook is rotated 90° with the bolt as the rotation center. The second hook is released, and the second hook is pressed against the inner wall of the air box under the action of the spring.

[0027] By adopting the above technical scheme, the present invention has the following beneficial effects: a gas box hoisting structure for a ring network cabinet and an installation method and a use method thereof. Compared with the related art, a rotatable lifting part and a blocking part are provided. During installation, the rotatable lifting part is hooked with the first through groove on the gas box, and then limited by the blocking part, so that the rotatable lifting part can be reliably connected to the gas box, which is convenient for lifting; during use, the gas box is lifted at the same time by hooking the rotatable lifting part. After the lifting is completed, the rotatable lifting part can be rotated by the rotatable lifting part to change its position, basically not occupying the extra space on the top of the gas box side plate, not affecting the installation of other component structures, having good operational flexibility, and being convenient to replace; thereby overcoming the technical problems that the lifting ear is in a fixed state, which is inconvenient to replace, occupies the extra space on the top of the gas box side plate, affects the installation of other component structures, and has poor operational flexibility, and achieving the technical effects of convenient installation and replacement, not occupying the extra space on the top of the gas box side plate, not affecting the installation of other component structures, and having good operational flexibility, which is conducive to wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the normal lifting state of the first embodiment of the present invention;

[0029] Figure 2 It is a cross-sectional view of a rotatable lifting part and a blocking part in a normal lifting state according to the first embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotatable lifting part in the first embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotatable lifting part and the blocking part after the lifting is completed in the first embodiment of the present invention after rotating 90°;

[0032] Figure 5 It is a partial cross-sectional view of the embodiment 1 of the present invention after the lifting is completed, and the rotatable lifting part and the blocking part are rotated 90°;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the normal lifting state of the second embodiment of the present invention;

[0034] Figure 7 It is a cross-sectional view of a rotatable lifting part and a blocking part in a normal lifting state of the second embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotatable lifting part and the blocking part after the lifting is completed in the second embodiment of the present invention after rotating 90°;

[0036] Fig. 9 It is a partial cross-sectional view of the rotatable lifting part and the blocking part after the lifting of the second embodiment of the present invention is completed and the lifting part and the blocking part are rotated 90 degrees;

[0037] In the figure: 10. Rotatable lifting part, 11. First hook hanging part, 111. First through hole, 112. First countersunk through hole, 12. Limiting part, 11-10. Second hook hanging part, 11-11. Third through hole, 20. Blocking part, 21. First countersunk screw, 22. First nut, 21-10. Bolt part, 21-20. Second nut, 21-30. Spring, 100. Air box, 101. First through groove, 102. Second through hole. DETAILED DESCRIPTION

[0038] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings;

[0039] The present invention discloses a gas box hoisting structure for a ring main unit, and an installation method and a use method thereof, which solve the technical problems in the related art that the lifting lug is in a fixed state, is inconvenient to replace, occupies extra space on the top of the gas box side plate, affects the installation of other component structures, and has poor operational flexibility, and achieves the positive effects of convenient installation and replacement, does not occupy extra space on the top of the gas box side plate, does not affect the installation of other component structures, and has good operational flexibility. The overall idea is as follows:

[0040] Embodiment 1:

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown; a gas box hoisting structure for a ring main unit and its installation method and use method,

[0042] The air box hoisting structure for the ring main unit comprises:

[0043] Four rotatable lifting parts 10, one end of the rotatable lifting part 10 is hooked on the first through slot 101 on the air box 100 and passes through the first through slot 101, and the other end is away from the first through slot 101, so as to facilitate the hooking of the rotatable lifting part 10 to achieve lifting;

[0044] and a blocking portion 20, at least one of which is connected to each of the rotatable lifting portions 10, and is used to form a block to limit the rotatable lifting portion 10 after the rotatable lifting portion 10 rotates an angle;

[0045] The installation method of the air box hoisting structure for the ring main unit comprises: passing the rotatable lifting part 10 through the first through slot 101 from one end of the first hook member 11 having the first through hole 111;

[0046] Install the blocking portion 20, install the first countersunk screw 21 in the first countersunk through hole 112 on the first hook member 11, and connect the first countersunk screw 21 with the first nut 22 to lock the first hook member 11;

[0047] Pull one end of the first hook member 11 and rotate it 90 degrees, so that the limiting member 12 abuts against the outer wall of the air box 100 to form a blockage, so that the first through hole 111 protrudes from the top of the air box 100, which is convenient for lifting;

[0048] The method for using the air box hoisting structure for a ring main unit comprises: during hoisting, hoisting the air box 100 through the first through hole 111 on the first hook member 11;

[0049] After the hoisting is completed, the first hook member 11 and the stopper 12 are rotated 90 degrees with the first through slot 101 as the rotation center, so that the portion of the first hook member 11 protruding from the top of the air box 100 is in a horizontal state, and the first countersunk screw 21 and the first nut 22 are in a vertical state to form a blockage;

[0050] Specifically, a rotatable lifting part 10 and a blocking part 20 are provided. During installation, the first hook hanging part 11 on the rotatable lifting part 10 is hooked with the first through groove 101 on the air box 100, and the limiting part 12 abuts against the outer wall of the air box 100, and then the first countersunk screw 21 and the first nut 22 on the blocking part 20 are connected with the first hook hanging part 11, so that the rotatable lifting part 10 can be reliably connected to the air box 100, which is convenient for lifting; during use, the air box 100 is lifted at the same time by hooking the first through hole 111 on the first hook hanging part 11. After the lifting is completed, the first hook hanging part 11 and the limiting part 12 are rotated 90°, so that the rotatable lifting part 10 can change its position, basically does not occupy the extra space on the top of the side plate of the air box 100, does not affect the installation of other component structures, has good operational flexibility, and is also very convenient to replace;

[0051] The following is a detailed description of each component and its connection relationship:

[0052] Specifically, if Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the rotatable lifting part 10 includes: a first hook member 11, the cross section of which is an "L"-shaped structure, one end of which is hooked on the first through slot 101 and passes through the first through slot 101, and the other end of which can protrude from the top of the air box 100 and protrude from the top part of the air box 100, and a first through hole 111 is also provided;

[0053] and a stopper 12 connected to one end of the first hook member 11, wherein the length of the stopper 12 is greater than the length of the first through slot 101, and is used to prevent the first hook member 11 from slipping out of the first through slot 101;

[0054] The first hook member 11 can rotate around the first through slot 101 at an angle;

[0055] The blocking portion 20 includes: a first countersunk screw 21, which passes through the second through hole 102 on the side wall of the air box 100 and passes through a first countersunk through hole 112 on the first hook member 11;

[0056] and a first nut 22 connected to the first countersunk screw 21 to lock the first hook 11 and the first countersunk screw 21;

[0057] The length of the first countersunk screw 21 is greater than the width of the first through slot 101, forming a barrier to prevent the rotatable lifting part 10 from being disengaged from the first through slot 101;

[0058] During implementation, the width of the first through slot 101 is 1.5 to 2 times the wall thickness of the rotatable lifting part 10, which is beneficial to the rotation angle of the rotatable lifting part 10;

[0059] The first hook member 11 and the stopper 12 are formed by bending a plate that is approximately in a "T" shape, so that the cross section of the first hook member 11 is in an "L" shape. A symmetrical arc fillet is provided on the outer edge of one end where the first through hole 111 is provided, so that the first hook member 11 is more beautiful and easier to pass through the first through slot 101 without damaging the first through slot 101.

[0060] The inner diameter of the second through hole 102 is larger than the maximum outer diameter of the first countersunk screw 21, so that the first countersunk screw 21 can pass through and fit with the first countersunk through hole 112, and then the first nut 22 is threadedly connected to the first countersunk screw 21 to lock the first hook 11 and the first countersunk screw 21;

[0061] Through the first hook member 11, pass through the first through slot 101, hook with the first through slot 101, the limiting member 12 abuts against the outer wall of the air box 100, and then is connected to the first hook member 11 by the first countersunk screw 21 and the first nut 22, so that the rotatable lifting part 10 can be reliably connected to the air box 100, which is convenient for lifting. After the lifting is completed, the first hook member 11 and the limiting member 12 are rotated 90°, so that the part of the first hook member 11 protruding from the top of the air box 100 is in a horizontal state, the first countersunk screw 21 and the first nut 22 are in a vertical state, and the rotatable lifting part 10 basically does not occupy the extra space on the top of the side panel of the air box 100.

[0062] Embodiment 2:

[0063] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown; a gas box hoisting structure for a ring main unit and its installation method and use method,

[0064] The air box hoisting structure for the ring main unit comprises:

[0065] Four rotatable lifting parts 10, one end of the rotatable lifting part 10 is hooked on the first through slot 101 on the air box 100 and passes through the first through slot 101, and the other end is away from the first through slot 101, so as to facilitate the hooking of the rotatable lifting part 10 to achieve lifting;

[0066] and a blocking part 20, each of the rotatable lifting parts 10 is connected with a blocking part 20, which is used to form a blocking part and limit the rotatable lifting part 10 after the rotatable lifting part 10 rotates an angle;

[0067] The installation method of the air box hoisting structure for the ring main unit comprises: passing the second hooking member 11-10, hooking one end of the rotatable lifting part 10 on the first through slot 101 on the air box 100, and passing through the first through slot 101, and the other end protruding from the top of the air box 100, so that the third through hole 11-11 protrudes from the top of the air box 100, which is convenient for lifting;

[0068] Install the blocking part 20, pass the bolt member 21-10 through the side wall of the air box 100 and the second hook member 11-10, put the spring 21-30 on the bolt member 21-10, and then connect the second nut 21-20 to the bolt member 21-10, compress the spring 21-30, and the spring 21-30 is compressed between the second hook member 11-10 and the second nut 21-20;

[0069] The method for using the air box hoisting structure for the ring main unit comprises: during hoisting, hoisting the air box 100 through the third through hole 11-11 on the second hook member 11-10;

[0070] After the hoisting is completed, the second hook member 11-10 is pulled, and one end of the second hook member 11-10 is pulled out of the first through slot 101, the spring 21-30 is compressed, and the second hook member 11-10 is rotated 90° with the bolt member 21-10 as the rotation center, and the second hook member 11-10 is loosened. Under the action of the spring 21-30, the second hook member 11-10 abuts against the inner wall of the air box 100;

[0071] Specifically, a rotatable lifting part 10 and a blocking part 20 are provided. During installation, the second hook member 11-10 on the rotatable lifting part 10 is hooked with the first through groove 101 on the air box 100, and then the bolt member 21-10 on the blocking part 20 passes through the side wall of the air box 100 and the second hook member 11-10, a spring 21-30 is put on the bolt member 21-10, and then the second nut 21-20 is threadedly connected to the bolt member 21-10, and the spring 21-30 is compressed. The spring 21-30 is in a compressed state, so that the second hook member 11-10 is reliably connected to the air box 100, which is convenient for lifting. When in use, the second hook member 11-10 is hooked The third through hole 11-11 of the air box 100 is hoisted at the same time. After the hoisting is completed, the second hook member 11-10 is pulled to pull one end of the second hook member 11-10 out of the first through slot 101, the spring 21-30 is compressed, and the second hook member 11-10 is rotated 90° with the bolt member 21-10 as the rotation center. The second hook member 11-10 is loosened, and the second hook member 11-10 is abutted against the inner wall of the air box 100 under the action of the spring 21-30; the rotatable hoisting part 10 can be changed in position, and basically no additional space on the top of the side plate of the air box 100 is occupied, and the installation of other component structures is not affected. The operation flexibility is good and the replacement is also very convenient;

[0072] The following is a detailed description of each component and its connection relationship:

[0073] Specifically, if Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the rotatable lifting part 10 includes: a second hook member 11-10, the cross section of which is an "L"-shaped structure, one end of which is hooked on the first through slot 101 and passes through the first through slot 101, and the other end of which can protrude from the top of the air box 100 and protrude from the top part of the air box 100, and a third through hole 11-11 is also provided;

[0074] The blocking portion 20 includes: a bolt member 21 - 10 passing through the side wall of the air box 100 and the second hook member 11 - 10;

[0075] a second nut 21-20 connected to the bolt member 21-10;

[0076] and a spring 21-30, which is sleeved on the bolt member 21-10 and is arranged between the second hook member 11-10 and the second nut 21-20;

[0077] During implementation, the second hook member 11-10 is formed by bending a plate, so that the cross section of the second hook member 11-10 is an "L"-shaped structure, and a symmetrical arc-shaped fillet is provided on the outer edge of one end where the third through hole 11-11 is provided, so that the second hook member 11-10 is more beautiful;

[0078] The bolt member 21-10 includes a bolt and a washer;

[0079] The springs 21-30 are cylindrical helical springs;

[0080] The second hook member 11-10 is hooked with the first through groove 101 on the air box 100, and then the bolt member 21-10 passes through the second through hole 102 on the side wall of the air box 100 and the fourth through hole reserved on the second hook member 11-10. The spring 21-30 is put on the bolt member 21-10, and then the second nut 21-20 is threadedly connected to the bolt member 21-10, and the spring 21-30 is compressed, so that the second hook member 11-10 is reliably connected to the air box 100, which is convenient for lifting. After the lifting is completed, the second hook member 11-10 is pulled, and one end of the second hook member 11-10 is pulled out of the first through slot 101, the spring 21-30 is compressed, and the second hook member 11-10 is rotated 90° with the bolt member 21-10 as the rotation center, and the second hook member 11-10 is loosened. Under the action of the spring 21-30, the second hook member 11-10 abuts against the inner wall of the air box 100, so that the rotatable lifting part 10 can change its position, and basically does not occupy the extra space on the top of the side plate of the air box 100;

[0081] The working principle of the present invention is as follows: during implementation, a rotatable lifting part 10 and a blocking part 20 are provided. During installation, the rotatable lifting part 10 is hooked with the first through slot 101 on the air box 100, and then limited by the blocking part 20, so that the rotatable lifting part 10 can be reliably connected to the air box 100, which is convenient for lifting; during use, the rotatable lifting part 10 is hooked so that the air box 100 is lifted at the same time. After the lifting is completed, the rotatable lifting part 100 is rotated by an angle, so that the rotatable lifting part 10 can change its position, and basically no It will occupy extra space on the top of the side panel of the air box 100, will not affect the installation of other component structures, has good operational flexibility, and is also very convenient to replace; thereby overcoming the technical problems that the lifting ear is in a fixed state, which makes replacement inconvenient, occupies extra space on the top of the side panel of the air box 100, affects the installation of other component structures, and has poor operational flexibility, and achieves the technical effect of easy installation and replacement, does not occupy extra space on the top of the side panel of the air box 100, does not affect the installation of other component structures, and has good operational flexibility, which is conducive to wide promotion.

[0082] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the accompanying drawings and are only for the convenience of describing the present invention or simplifying the description, rather than indicating a specific direction that must be possessed; the operating process described in the embodiments is not an absolute usage procedure and corresponding adjustments may be made during actual use.

[0083] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons having ordinary skills in the field to which the invention belongs; the words "first", "second" and similar terms used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not necessarily indicate a quantity limitation, but rather indicate the existence of at least one, which needs to be determined based on the content of the embodiment.

[0084] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas box hoisting structure for a ring main unit, characterized in that: include: at least two rotatable lifting parts (10), one end of the rotatable lifting part (10) being hooked on a first through slot (101) on the air box (100) and passing through the first through slot (101), and the other end being away from the first through slot (101); and a blocking portion (20) for forming a blocking portion and limiting the position of the rotatable lifting portion (10) after the rotatable lifting portion (10) rotates to a certain angle; The rotatable lifting part (10) comprises: a second hooking member (11-10) having an "L"-shaped cross section, one end of which is hooked on the first through slot (101) and passes through the first through slot (101), and the other end of which is capable of protruding from the top of the air box (100) and protruding from the top portion of the air box (100), and a third through hole (11-11) is also provided; The blocking part (20) comprises: a bolt member (21-10) passing through the side wall of the air box (100) and the second hook member (11-10); a second nut (21-20) connected to the bolt member (21-10); and a spring (21-30) sleeved on the bolt member (21-10) and arranged between the second hook member (11-10) and the second nut (21-20); The second hook member (11-10) is hooked with the first through groove (101) on the air box (100), and then the bolt member (21-10) passes through the second through hole (102) on the side wall of the air box (100) and the fourth through hole reserved on the second hook member (11-10), and the spring (21-30) is put on the bolt member (21-10), and then the second nut (21-20) is threadedly connected to the bolt member (21-10), and the spring (21-30) is pressed, so that the second hook member (11-10) and the air box (100) are connected. 00) are reliably connected to facilitate lifting. After lifting is completed, the second hook member (11-10) is pulled to pull one end of the second hook member (11-10) out of the first through groove (101), the spring (21-30) is compressed, and the second hook member (11-10) is rotated 90° with the bolt member (21-10) as the rotation center. The second hook member (11-10) is loosened, and the second hook member (11-10) is abutted against the inner wall of the air box (100) under the action of the spring (21-30), so that the rotatable lifting part (10) changes position.

2. A method for installing a ring main unit gas box hoisting structure, based on the ring main unit gas box hoisting structure according to claim 1, characterized in that: include: The rotatable lifting part (10) is passed through the second hooking member (11-10), one end of which is hooked on the first through slot (101) on the air box (100) and passes through the first through slot (101), and the other end protrudes from the top of the air box (100), so that the third through hole (11-11) protrudes from the top of the air box (100), which is convenient for lifting; The blocking part (20) is installed, the bolt member (21-10) is passed through the side wall of the air box (100) and the second hook member (11-10), the spring (21-30) is put on the bolt member (21-10), and then connected to the bolt member (21-10) through the second nut (21-20), the spring (21-30) is compressed, and the spring (21-30) is compressed between the second hook member (11-10) and the second nut (21-20).

3. A method for using a gas box hoisting structure for a ring main unit, based on the gas box hoisting structure for a ring main unit according to claim 1, characterized in that: include: When lifting, the air box (100) is lifted through the third through hole (11-11) on the second hook member (11-10); After the lifting is completed, the second hook member (11-10) is pulled to pull one end of the second hook member (11-10) out of the first through groove (101), the spring (21-30) is compressed, the second hook member (11-10) is rotated 90° with the bolt member (21-10) as the rotation center, the second hook member (11-10) is loosened, and the second hook member (11-10) is pressed against the inner wall of the air box (100) under the action of the spring (21-30).

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