Outdoor electrical engineering line node control device

Abstract

The utility model discloses an outdoor electrical engineering line node control device comprising a cabinet body, the bottom end of the cabinet body is provided with an air guide box, the air guide box is detachably connected with the cabinet body, the top of the air guide box is communicated with the interior of the cabinet body, and the top opening of the air guide box is provided with a dehumidification box. A row of air inlet holes are formed in two side surfaces of the air guide box; an exhaust fan is arranged in the middle of the top end of the cabinet body, the exhaust fan is detachably connected with the cabinet body, and the bottom end of the exhaust fan is connected with a control circuit in the cabinet body. The air guide box is arranged at the bottom of the cabinet body, the dehumidification box is arranged at the top end of the air guide box and can dehumidify air entering the cabinet body, the exhaust fan is arranged at the top of the cabinet body, air flow can be driven to flow through the exhaust fan, heat in the cabinet body can be conveniently exhausted, the purpose of heat dissipation is achieved, and meanwhile dehumidification of the dehumidification box on the air at the bottom of the control cabinet is accelerated. And filter plates are symmetrically arranged on the two sides in the gas guide box, and gas entering the gas guide box can be filtered through the filter plates.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical engineering, in particular to a node control device for outdoor electrical engineering lines. Background Art

[0002] When constructing outdoor circuit projects, it is necessary to lay lines and install control cabinets at some line nodes to achieve the purpose of controlling the circuit. There are many types of control cabinets now, and the types and structures of control cabinets used in different locations are also different.

[0003] The Chinese patent authorization announcement number CN216775348U discloses a control device for building electrical engineering, including a control cabinet body, an exhaust port, a connector, a motor, an output rod, a fan, a temperature sensor and a controller, wherein the exhaust ports are respectively opened on both sides of the control cabinet body, the exhaust ports are connected to the inside of the control cabinet body, the connector is fixedly connected to the top of the inner wall of the control cabinet body, the motor is fixedly connected to the outside of the connector, the output rod is fixedly connected to the output end of the motor, and the fan is fixedly connected to the surface of the output rod. This patent solution solves the problem that the existing control device generates a lot of heat due to the operation of the internal circuits and equipment, which will cause the temperature inside the control device to be too high. If the heat inside the control device is not discharged in time, the aging of the circuits and equipment inside the control device will be accelerated, which will greatly affect the service life of the circuits and equipment.

[0004] The line node control cabinets used in outdoor electrical engineering often encounter rainy weather, and the lower half of many outdoor line node control cabinets are located below the ground and are installed on brackets set up in the dug pits, and the air in these pits is relatively humid. Therefore, in addition to considering the heat dissipation problem, the line node control cabinets used in outdoor electrical engineering also need to have a certain dehumidification capacity. The control device for building electrical engineering provided by the above patent does not have a dehumidification structure. When used as an outdoor line node control cabinet, the components inside it are prone to rust, which in turn affects the service life of the components. Utility Model Content

[0005] The purpose of the utility model is to provide an electrical engineering line node control device for outdoor use, aiming to improve the problem that the existing line node control device does not have a dehumidification structure and its internal components are prone to rust when used as an outdoor line node control cabinet, which affects the service life of the components.

[0006] The utility model is achieved in this way:

[0007] A control device for an electrical engineering line node for outdoor use comprises a cabinet, an air guide box is provided at the bottom of the cabinet, the air guide box is detachably connected to the cabinet, the top of the air guide box is communicated with the interior of the cabinet, and a dehumidification box is installed at the top opening of the air guide box, and an appropriate amount of dehumidifier is provided inside the dehumidification box; a row of air inlet holes are provided on both sides of the air guide box; an exhaust fan is provided in the middle of the top of the cabinet, the exhaust fan is detachably connected to the cabinet, and the bottom of the exhaust fan is connected to the control circuit inside the cabinet.

[0008] Preferably, the cabinet bottom corners are provided with jacks, the cabinet upper surface middle portion is provided with a mounting hole, the mounting hole inner bottom end is provided with a limiting ring; the cabinet front opening is provided with a door panel, the door panel is rotatably connected to the cabinet via a hinge, and a first pull groove is provided on the side of the door panel that is not rotatably connected to the cabinet.

[0009] Preferably, the bottom corners of the air guide box are provided with supporting feet, and the upper surface of the air guide box is provided with a plug at a position aligned with the plug hole, and the dehumidification box is threadedly connected to the plug.

[0010] Preferably, a hexagonal joint is provided in the middle of the top of the dehumidification box, a plurality of air holes are provided on the arc surface of the dehumidification box, and a transfer tube is provided in the middle of the bottom surface of the dehumidification box.

[0011] Preferably, an external thread is provided at the bottom of the arc surface of the exhaust fan, and a wire is provided at the bottom end of the exhaust fan, and an electrical plug is provided at the end of the wire.

[0012] Preferably, pull-out holes are symmetrically provided on both sides of the front side of the air guide box, a filter plate is installed inside the pull-out hole, a second pull groove is provided on the side of the filter plate facing outward, and filter cotton is provided in the middle of the filter plate.

[0013] Preferably, threaded grooves are provided at the top corners of the cabinet, the threaded grooves are connected to lifting rings, the bottom ends of the lifting rings are rotatably connected to adapters, the bottom surface of the adapter is provided with a pressure plate, the middle part of the bottom surface of the pressure plate is provided with studs, and the studs are threadedly connected to the threaded grooves.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. An air guide box is provided at the bottom of the cabinet of the utility model, and a dehumidification box is provided on the top of the air guide box. The dehumidification box can dehumidify the air entering the cabinet, and an exhaust fan is provided on the top of the cabinet. The exhaust fan can drive the air flow to conveniently extract the heat inside the cabinet to achieve the purpose of heat dissipation, and at the same time, it also accelerates the dehumidification of the air at the bottom of the control cabinet by the dehumidification box.

[0016] 2. Filter plates are symmetrically arranged on both sides of the air guide box of the utility model, through which the gas entering the air guide box can be filtered to prevent dust in the air from falling into the cabinet.

[0017] 3. The top corners of the cabinet of the utility model are all equipped with lifting rings, so as to facilitate the lifting of the cabinet and to facilitate the installation of the cabinet at a designated position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the cabinet of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the gas guide box of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the dehumidification box of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the exhaust fan of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the filter plate of the utility model;

[0024] Figure 7 It is a structural schematic diagram of a lifting ring of the utility model.

[0025] In the figure: 1. cabinet; 11. socket; 12. threaded groove; 13. mounting hole; 14. limiting ring; 15. door panel; 16. hinge; 17. first groove; 2. air guide box; 21. air inlet; 22. support foot; 23. plug; 24. pull-out hole; 3. dehumidification box; 31. hexagonal joint; 32. adapter tube; 4. exhaust fan; 41. wire; 42. power plug; 5. filter plate; 51. second groove; 52. filter cotton; 6. lifting ring; 61. adapter; 62. pressure plate; 63. stud. DETAILED DESCRIPTION

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0028] Example 1

[0029] like Figure 1 and Figure 3 As shown, a control device for an outdoor electrical engineering line node includes a cabinet 1, an air guide box 2 is provided at the bottom of the cabinet 1, the air guide box 2 is detachably connected to the cabinet 1, and the top of the air guide box 2 is communicated with the inside of the cabinet 1. This structure facilitates the air guide box 2 to drain the gas, so that it is convenient for the air to enter the cabinet 1 through the air guide box 2. A dehumidification box 3 is installed at the top opening of the air guide box 2. The dehumidification box 3 is convenient for dehumidifying the air entering the cabinet 1, so as to prevent the humid air from affecting the components inside the control cabinet. An appropriate amount of dehumidifier is provided inside the dehumidification box 3; the dehumidifier is used to absorb moisture in the air. A row of air inlets 21 are provided on both sides of the air guide box 2; the air inlet 21 facilitates the smooth entry of external air into the cabinet 1. An exhaust fan 4 is provided in the middle of the top of the cabinet 1. The exhaust fan 4 is detachably connected to the cabinet 1, and the bottom end of the exhaust fan 4 is connected to the control circuit inside the cabinet 1. This structure facilitates the control cabinet to control the operation of the exhaust fan 4 and facilitates the exhaust fan 4 to drive the air flow, thereby achieving heat dissipation inside the cabinet 1.

[0030] like Figure 2 As shown, there are jacks 11 at the corners of the bottom surface of the cabinet 1, and the jacks 11 are convenient for inserting the air guide box 2 into the bottom of the cabinet 1. A mounting hole 13 is provided in the middle of the upper surface of the cabinet 1, and a limiting ring 14 is provided at the bottom end of the inner side of the mounting hole 13; the mounting hole 13 is convenient for installing the exhaust fan 4, and the limiting ring 14 is convenient for limiting the position of the exhaust fan 4 to ensure the stability of the exhaust fan 4 on the inner side of the mounting hole 13. A door panel 15 is provided at the front opening of the cabinet 1, and the door panel 15 is rotatably connected to the cabinet 1 through a hinge 16. The door panel 15 is convenient for opening the cabinet 1. A first groove 17 is provided on the side of the door panel 15 that is not rotatably connected to the cabinet 1. The first groove 17 is convenient for pulling open the door panel 15 and facilitating the use of the door panel 15.

[0031] like Figure 3 As shown, the bottom corners of the air guide box 2 are provided with legs 22, which are used to stabilize the air guide box 2 on the ground. The upper surface of the air guide box 2 is aligned with the insertion hole 11 and provided with a plug 23, which is used to facilitate the insertion of the air guide box 2 into the bottom of the cabinet 1. The dehumidification box 3 is threadedly connected with the plug 23, and this structure is convenient for dehumidifying the gas flowing out of the plug 23.

[0032] like Figure 4 As shown, a hexagonal joint 31 is provided in the middle of the top of the dehumidification box 3, which is convenient for disassembly and use of the dehumidification box 3. The arc surface of the dehumidification box 3 is provided with a plurality of air holes, which are convenient for the dehumidified air to smoothly enter the cabinet 1. A transfer tube 32 is provided in the middle of the bottom surface of the dehumidification box 3, which is convenient for the dehumidification box 3 to be threadedly connected with the insertion tube 23.

[0033] like Figure 5As shown, the bottom of the arc surface of the exhaust fan 4 is provided with an external thread, which is convenient for the exhaust fan 4 to be threadedly connected with the mounting hole 13. A wire 41 is provided at the bottom of the exhaust fan 4, and an electrical plug 42 is provided at the end of the wire 41; the wire 41 and the electrical plug 42 are convenient for the exhaust fan 4 to be connected with the control circuit inside the control cabinet.

[0034] Working principle: When in use, the entire control cabinet is installed at the position of the line node, and then the line is introduced into the control cabinet, and the line inside the control cabinet is connected to the line of the circuit engineering. After that, an appropriate amount of dehumidifier is loaded into the dehumidifier box 3, and then the dehumidifier box 3 is installed on the inner side of the opening at the top of the air guide box 2; and the exhaust fan 4 is started, so that the exhaust fan 4 drives the airflow, and the moisture inside the airflow will be adsorbed by the dehumidifier after the airflow passes through the dehumidifier box 3, thereby achieving the purpose of drying the air. Compared with the prior art, the present application has an air guide box 2 at the bottom of the cabinet 1, and a dehumidifier box 3 at the top of the air guide box 2. The dehumidifier box 3 can dehumidify the air entering the cabinet 1, and the cabinet 1 is provided with an exhaust fan 4 at the top. The exhaust fan 4 can drive the airflow to facilitate the extraction of heat from the cabinet 1, thereby achieving the purpose of heat dissipation, and also accelerates the dehumidifier box 3 to dehumidify the air at the bottom of the control cabinet.

[0035] Example 2

[0036] like Figure 1 and Figure 3 As shown, a control device for an outdoor electrical engineering line node includes a cabinet 1, an air guide box 2 is provided at the bottom of the cabinet 1, the air guide box 2 is detachably connected to the cabinet 1, and the top of the air guide box 2 is communicated with the inside of the cabinet 1. This structure facilitates the air guide box 2 to drain the gas, so that it is convenient for the air to enter the cabinet 1 through the air guide box 2. A dehumidification box 3 is installed at the top opening of the air guide box 2. The dehumidification box 3 is convenient for dehumidifying the air entering the cabinet 1, so as to prevent the humid air from affecting the components inside the control cabinet. An appropriate amount of dehumidifier is provided inside the dehumidification box 3; the dehumidifier is used to absorb moisture in the air. A row of air inlets 21 are provided on both sides of the air guide box 2; the air inlet 21 facilitates the smooth entry of external air into the cabinet 1. An exhaust fan 4 is provided in the middle of the top of the cabinet 1. The exhaust fan 4 is detachably connected to the cabinet 1, and the bottom end of the exhaust fan 4 is connected to the control circuit inside the cabinet 1. This structure facilitates the control cabinet to control the operation of the exhaust fan 4 and facilitates the exhaust fan 4 to drive the air flow, thereby achieving heat dissipation inside the cabinet 1.

[0037] like Figure 2As shown, there are jacks 11 at the corners of the bottom surface of the cabinet 1, and the jacks 11 are convenient for inserting the air guide box 2 into the bottom of the cabinet 1. A mounting hole 13 is provided in the middle of the upper surface of the cabinet 1, and a limiting ring 14 is provided at the bottom end of the inner side of the mounting hole 13; the mounting hole 13 is convenient for installing the exhaust fan 4, and the limiting ring 14 is convenient for limiting the position of the exhaust fan 4 to ensure the stability of the exhaust fan 4 on the inner side of the mounting hole 13. A door panel 15 is provided at the front opening of the cabinet 1, and the door panel 15 is rotatably connected to the cabinet 1 through a hinge 16. The door panel 15 is convenient for opening the cabinet 1. A first groove 17 is provided on the side of the door panel 15 that is not rotatably connected to the cabinet 1. The first groove 17 is convenient for pulling open the door panel 15 and facilitating the use of the door panel 15.

[0038] like Figure 3 As shown, the bottom corners of the air guide box 2 are provided with legs 22, which are used to stabilize the air guide box 2 on the ground. The upper surface of the air guide box 2 is aligned with the insertion hole 11 and provided with a plug 23, which is used to facilitate the insertion of the air guide box 2 into the bottom of the cabinet 1. The dehumidification box 3 is threadedly connected with the plug 23, and this structure is convenient for dehumidifying the gas flowing out of the plug 23.

[0039] like Figure 4 As shown, a hexagonal joint 31 is provided in the middle of the top of the dehumidification box 3, which is convenient for disassembly and use of the dehumidification box 3. The arc surface of the dehumidification box 3 is provided with a plurality of air holes, which are convenient for the dehumidified air to smoothly enter the cabinet 1. A transfer tube 32 is provided in the middle of the bottom surface of the dehumidification box 3, which is convenient for the dehumidification box 3 to be threadedly connected with the insertion tube 23.

[0040] like Figure 5 As shown, the bottom of the arc surface of the exhaust fan 4 is provided with an external thread, which is convenient for the exhaust fan 4 to be threadedly connected with the mounting hole 13. A wire 41 is provided at the bottom of the exhaust fan 4, and an electrical plug 42 is provided at the end of the wire 41; the wire 41 and the electrical plug 42 are convenient for the exhaust fan 4 to be connected with the control circuit inside the control cabinet.

[0041] like Figure 6 As shown, the front sides of the air guide box 2 are symmetrically provided with pull-out holes 24, and the filter plate 5 is installed inside the pull-out holes 24. The pull-out holes 24 are convenient for installing the filter plate 5 and for disassembling the filter plate 5. The side of the filter plate 5 facing outward is provided with a second pull groove 51, and the second pull groove 51 is convenient for disassembling and using the filter plate 5. The middle part of the filter plate 5 is provided with filter cotton 52, and the filter cotton 52 is convenient for filtering the air entering the air guide box 2 to prevent dust in the air from entering the interior of the cabinet 1.

[0042] Example 3

[0043] like Figure 1 and Figure 3As shown, a control device for an outdoor electrical engineering line node includes a cabinet 1, an air guide box 2 is provided at the bottom of the cabinet 1, the air guide box 2 is detachably connected to the cabinet 1, and the top of the air guide box 2 is communicated with the inside of the cabinet 1. This structure facilitates the air guide box 2 to drain the gas, so that it is convenient for the air to enter the cabinet 1 through the air guide box 2. A dehumidification box 3 is installed at the top opening of the air guide box 2. The dehumidification box 3 is convenient for dehumidifying the air entering the cabinet 1, so as to prevent the humid air from affecting the components inside the control cabinet. An appropriate amount of dehumidifier is provided inside the dehumidification box 3; the dehumidifier is used to absorb moisture in the air. A row of air inlets 21 are provided on both sides of the air guide box 2; the air inlet 21 facilitates the smooth entry of external air into the cabinet 1. An exhaust fan 4 is provided in the middle of the top of the cabinet 1. The exhaust fan 4 is detachably connected to the cabinet 1, and the bottom end of the exhaust fan 4 is connected to the control circuit inside the cabinet 1. This structure facilitates the control cabinet to control the operation of the exhaust fan 4 and facilitates the exhaust fan 4 to drive the air flow, thereby achieving heat dissipation inside the cabinet 1.

[0044] like Figure 2 As shown, there are jacks 11 at the corners of the bottom surface of the cabinet 1, and the jacks 11 are convenient for inserting the air guide box 2 into the bottom of the cabinet 1. A mounting hole 13 is provided in the middle of the upper surface of the cabinet 1, and a limiting ring 14 is provided at the bottom end of the inner side of the mounting hole 13; the mounting hole 13 is convenient for installing the exhaust fan 4, and the limiting ring 14 is convenient for limiting the position of the exhaust fan 4 to ensure the stability of the exhaust fan 4 on the inner side of the mounting hole 13. A door panel 15 is provided at the front opening of the cabinet 1, and the door panel 15 is rotatably connected to the cabinet 1 through a hinge 16. The door panel 15 is convenient for opening the cabinet 1. A first groove 17 is provided on the side of the door panel 15 that is not rotatably connected to the cabinet 1. The first groove 17 is convenient for pulling open the door panel 15 and facilitating the use of the door panel 15.

[0045] like Figure 3 As shown, the bottom corners of the air guide box 2 are provided with legs 22, which are used to stabilize the air guide box 2 on the ground. The upper surface of the air guide box 2 is aligned with the insertion hole 11 and provided with a plug 23, which is used to facilitate the insertion of the air guide box 2 into the bottom of the cabinet 1. The dehumidification box 3 is threadedly connected with the plug 23, and this structure is convenient for dehumidifying the gas flowing out of the plug 23.

[0046] like Figure 4 As shown, a hexagonal joint 31 is provided in the middle of the top of the dehumidification box 3, which is convenient for disassembly and use of the dehumidification box 3. The arc surface of the dehumidification box 3 is provided with a plurality of air holes, which are convenient for the dehumidified air to smoothly enter the cabinet 1. A transfer tube 32 is provided in the middle of the bottom surface of the dehumidification box 3, which is convenient for the dehumidification box 3 to be threadedly connected with the insertion tube 23.

[0047] like Figure 5As shown, the bottom of the arc surface of the exhaust fan 4 is provided with an external thread, which is convenient for the exhaust fan 4 to be threadedly connected with the mounting hole 13. A wire 41 is provided at the bottom of the exhaust fan 4, and an electrical plug 42 is provided at the end of the wire 41; the wire 41 and the electrical plug 42 are convenient for the exhaust fan 4 to be connected with the control circuit inside the control cabinet.

[0048] like Figure 6 As shown, the front sides of the air guide box 2 are symmetrically provided with pull-out holes 24, and the filter plate 5 is installed inside the pull-out holes 24. The pull-out holes 24 are convenient for installing the filter plate 5 and for disassembling the filter plate 5. The side of the filter plate 5 facing outward is provided with a second pull groove 51, and the second pull groove 51 is convenient for disassembling and using the filter plate 5. The middle part of the filter plate 5 is provided with filter cotton 52, and the filter cotton 52 is convenient for filtering the air entering the air guide box 2 to prevent dust in the air from entering the interior of the cabinet 1.

[0049] like Figure 7 As shown, the top corners of the cabinet 1 are all provided with thread grooves 12, and the thread grooves 12 are connected with the lifting ring 6. The thread grooves 12 are convenient for installing the lifting ring 6 and for disassembling the lifting ring 6. The bottom end of the lifting ring 6 is rotatably connected with an adapter 61, and the adapter 61 is convenient for rotating the lifting ring 6. A pressing plate 62 is provided on the bottom surface of the adapter 61, and a stud 63 is provided in the middle of the bottom surface of the pressing plate 62. The stud 63 is threadedly connected with the thread groove 12; the pressing plate 62 cooperates with the stud 63 to facilitate the threaded connection between the lifting ring 6 and the thread groove 12, and facilitate the stable connection of the lifting ring 6.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A node control device for an outdoor electrical engineering line, comprising a cabinet (1), characterized in that: An air guide box (2) is provided at the bottom of the cabinet (1), the air guide box (2) is detachably connected to the cabinet (1), the top of the air guide box (2) is communicated with the interior of the cabinet (1), and a dehumidification box (3) is installed at the top opening of the air guide box (2), and a proper amount of dehumidifier is provided inside the dehumidification box (3); a row of air inlet holes (21) are provided on both sides of the air guide box (2); an exhaust fan (4) is provided at the middle of the top of the cabinet (1), the exhaust fan (4) is detachably connected to the cabinet (1), and the bottom of the exhaust fan (4) is connected to the control circuit inside the cabinet (1).

2. The outdoor electrical engineering line node control device according to claim 1, characterized in that: The cabinet body (1) is provided with insertion holes (11) at the corners of the bottom surface, and a mounting hole (13) is provided in the middle of the upper surface of the cabinet body (1), and a limiting ring (14) is provided at the bottom end of the inner side of the mounting hole (13); a door panel (15) is provided at the front opening of the cabinet body (1), and the door panel (15) is rotatably connected to the cabinet body (1) through a hinge (16), and a first groove (17) is provided on the side of the door panel (15) that is not rotatably connected to the cabinet body (1).

3. The outdoor electrical engineering line node control device according to claim 2, characterized in that: The bottom corners of the air guide box (2) are provided with supporting feet (22), and the upper surface of the air guide box (2) is provided with a plug (23) at a position aligned with the plug hole (11), and the dehumidification box (3) is threadedly connected to the plug (23).

4. The electrical engineering line node control device for outdoor use according to claim 1, characterized in that: A hexagonal joint (31) is provided in the middle of the top of the dehumidification box (3), a plurality of air holes are provided on the arc surface of the dehumidification box (3), and a transfer tube (32) is provided in the middle of the bottom surface of the dehumidification box (3).

5. The outdoor electrical engineering line node control device according to claim 1, characterized in that: The bottom of the arc surface of the exhaust fan (4) is provided with an external thread, and the bottom end of the exhaust fan (4) is provided with a wire (41), and the end of the wire (41) is provided with an electrical plug (42).

6. A node control device for outdoor electrical engineering lines according to any one of claims 1 to 5, characterized in that: The front side of the air guide box (2) is symmetrically provided with pull-out holes (24), a filter plate (5) is installed inside the pull-out hole (24), a second pull groove (51) is provided on a side of the filter plate (5) facing outward, and a filter cotton (52) is provided in the middle of the filter plate (5).

7. A node control device for outdoor electrical engineering lines according to any one of claims 1 to 5, characterized in that: The cabinet body (1) is provided with a threaded groove (12) at each corner of the top end, the threaded groove (12) is connected to a lifting ring (6), the bottom end of the lifting ring (6) is rotatably connected to an adapter (61), a pressing plate (62) is provided on the bottom surface of the adapter (61), a stud (63) is provided in the middle of the bottom surface of the pressing plate (62), and the stud (63) is threadedly connected to the threaded groove (12).

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