Anti-theft equipment for electric power metering device

By integrating vacuum cleaner components and alarm components in the power metering device, the problem of insufficient dust erosion and anti-theft functions during the installation of the device during outdoor installation is solved, and the dual effects of dust removal and theft alarm are achieved.

CN119689051APending Publication Date: 2025-03-25YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO +2
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Patent Information

Application Number
CN202411556252.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

When installed outdoors, existing power metering devices are susceptible to external dust and impurities, and lack effective anti-theft function.

Method used

An anti-theft device including a vacuum cleaner assembly and an alarm assembly is designed. The vacuum cleaner assembly absorbs dust and impurities through the cooperation of the fan and the filter plate; the alarm assembly detects that the illegal door is opened by detecting that the alarm is activated.

Benefits of technology

It effectively prevents the electrical components of the power metering device from being damaged by dust and impurities, and realizes timely alarms for potential theft, improving the service life and safety of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the field of auxiliary technologies for electric power metering devices, and discloses an anti-theft device for an electric power metering device, which comprises a cabinet body assembly, a dust collection assembly is fixedly mounted in the cabinet body assembly, an alarm assembly is fixedly mounted at the upper end of the cabinet body assembly, the cabinet body assembly comprises a cabinet body part, and fastening plates are arranged at four corners of the rear side of the cabinet body part. A leakage hole is formed in the bottom end of the cabinet body part, a cabinet body back plate is fixedly installed on the rear side of the cabinet body part, a dust collection groove hole is formed in the cabinet body back plate, an installation frame is fixedly installed on the front end face of the cabinet body back plate, electric power metering elements are fixedly installed on the installation frame, and plug columns are fixedly installed on the back faces of the electric power metering elements. The number of the plug columns is consistent with that of the plug holes, the plug columns and the plug holes are aligned with each other, the plug columns are inserted into the corresponding plug holes respectively and movably connected in a sleeved mode, a cabinet door is movably installed on the left side of the front end of the cabinet body part through hinges, and the device has a certain dust suction and removal function and an anti-theft function.
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Description

Technical Field

[0001] The present invention relates to the field of auxiliary technology for electric power metering devices, and more specifically to an anti-theft device for electric power metering devices. Background Art

[0002] The power metering device is a metering instrument used to measure and record electric energy. It plays a vital role in the power system. The power metering device is mainly composed of an energy meter (such as an active energy meter, a reactive energy meter, a maximum demand meter, a multi-rate energy meter, etc.), a metering transformer (including a voltage transformer and a current transformer) and secondary connecting wires. These electrical components are generally installed in an energy metering cabinet. In order to ensure accurate measurement and stable operation of the power metering device, it is necessary to perform regular maintenance and care on it, including checking the performance and quality of the energy meter and the transformer, the cross-section and connection of the secondary circuit wire, and the sealing and safety of the metering cabinet or metering box.

[0003] However, the power metering devices under the existing technology still have the following shortcomings in actual use;

[0004] First, the power metering device is generally installed in the power metering cabinet, and the power metering cabinet is generally installed outdoors. Therefore, when the door of the power metering cabinet is opened, the various electrical components installed inside are easily contaminated with a large amount of dust and impurities from the outside. Over time, the accumulation of dust and impurities from the outside will easily cause corrosion to the electrical components, thereby affecting the service life of the electrical components. However, the power metering device under the prior art does not have the function of absorbing dust and impurities from the outside.

[0005] Secondly, the electric energy metering cabinet used in the electric energy metering device under the prior art is often installed outdoors. Therefore, when the door of the electric energy metering cabinet is opened, the various electrical components installed inside it are easily stolen by outsiders, that is, the anti-theft function of the electric energy metering device under the prior art is poor;

[0006] Therefore, in order to solve the above problems, it is necessary to provide an anti-theft device for an electric power metering device. Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides an anti-theft device for an electric power metering device to solve the problems existing in the above-mentioned background technology.

[0008] The present invention provides the following technical solution: an anti-theft device for an electric power metering device, comprising a cabinet assembly, a dust collection assembly is fixedly installed inside the cabinet assembly, and an alarm assembly is fixedly installed on the upper end of the cabinet assembly;

[0009] The cabinet assembly includes a cabinet part, fastening plates are provided at the four rear corners of the cabinet part, a leakage hole is opened at the bottom end of the cabinet part, a cabinet back panel is fixedly installed on the rear side of the cabinet part, a dust suction slot hole is opened on the cabinet back panel, a plug hole is opened on the cabinet back panel, a mounting frame is fixedly installed on the front end surface of the cabinet back panel, an electric power metering element is fixedly installed on the mounting frame, plugs are fixedly installed on the back side of the electric power metering element, the number of the plugs is consistent with the number of the plug holes and are aligned with each other, and the plugs are respectively inserted into the corresponding plug holes and are movably connected to each other.

[0010] Furthermore, a hinge is provided on the left side of the front end of the cabinet body part, and a cabinet door is movably installed on the left side of the front end of the cabinet body part by using the hinge, a soft plug board is installed on the right end of the cabinet door, a touch panel is installed on the end of the soft plug board, a positioning hole is provided on the soft plug board, a slot is provided on the right side of the front end of the cabinet body part, clamps are fixedly installed on the upper and lower ends of the slot, a socket is provided on the outside of the slot, the positioning hole can be aligned with the socket provided by the slot, a plug rod is movably sleeved on the socket provided by the slot, a normally closed switch is provided inside the slot, the touch panel is inserted into the slot and contacts the normally closed switch to put it in a disconnected state, and a connecting hole is provided on the back side of the cabinet body part.

[0011] Furthermore, the dust collection component includes a partition, which is fixedly installed on the rear end of the cabinet back plate, and a dust collection channel is fixedly sleeved on the partition, and the dust collection channel and the dust collection channel hole are aligned with each other and fixedly sleeved, and a through pipe is fixedly sleeved on the partition, and the through pipe and the plug hole are aligned with each other and fixedly sleeved, a back bin box is fixedly installed on the back side of the cabinet back plate, and a filter plate is fixedly provided on the inner side of the back bin box, and the filter plate is provided with evenly distributed filter holes, and the filter plate is provided with plate holes aligned with the through pipe, and the pipe openings of the through pipe are respectively fixedly sleeved with the plate holes.

[0012] Furthermore, a back fixing plate is fixedly installed on the back side of the back bin box, and evenly distributed fans are fixedly installed on the back fixing plate. A power supply is fixedly installed on the outer side of the back bin box, and the power supply is electrically connected to the fans. The power supply supplies power to the fans, and the power supply is electrically connected to the normally closed switch through the connecting hole, and the power supply controls the switch through the normally closed switch.

[0013] Furthermore, the alarm assembly includes three front support rods, which are evenly installed on the inner front side of the through pipe, a front bearing is fixedly installed on the inner side of the rod body of the front support rod, and three rear support rods are evenly connected to the inner rear side of the through pipe.

[0014] Furthermore, a rear bearing is fixedly installed on the inner side of the rod body of the rear support rod, a movable shaft is movably sleeved between the front bearing and the rear bearing, a wind sensor is fixedly installed on the shaft body of the movable shaft, and evenly distributed wind fan blades are fixedly connected to the outer side of the wind sensor. An alarm is fixedly installed on the upper end of the cabinet body, the wind sensor is electrically connected to the alarm, and the wind sensor electrically controls the activation of the alarm.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a dust collection component. When the staff needs to detect the power metering element installed in the cabinet, the cabinet door will be opened, the soft plug board will be pulled out of the slot, the touch panel will no longer contact the normally closed switch inside it, and the normally closed switch will not be triggered and will be in a closed state, so that the power supply will supply power to the fan, and the fan will start to exhaust air outwardly, so that the airflow is sucked in from the dust collection slot hole, passes through the dust collection slot and through the filter holes opened by the filter plate, and the dust and impurity particles carried in the air are intercepted when passing through the filter holes, and the airflow is discharged outwardly from the fan. In this way, when the cabinet of the device is opened, the dust and impurities carried by the outside air are sucked out at the dust collection slot hole, thereby preventing the power metering element installed therein from being contaminated with dust and impurities, and the dust collection function of the device is realized in this way.

[0017] 2. The present invention is provided with an alarm component. When an outsider opens the cabinet door and steals the power metering element installed inside the cabinet, the plug installed on the back of the power metering element will be detached from the plug hole. At this time, the pipeline of the through pipe will not be blocked. Under the exhaust action of the fan, the air flow in the through pipe pipeline will begin to flow, and the wind sensor will begin to rotate under the action of the wind fan blades. The rotation of the wind sensor generates an induced electrical signal, thereby controlling the alarm to start and start the alarm. In this way, the anti-theft effect of the device is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the cabinet assembly of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the slot of the present invention.

[0021] Figure 4 It is a schematic diagram of the back structure of the cabinet assembly of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the dust collection component of the present invention.

[0023] Figure 6It is a schematic diagram of the structure of the alarm component of the present invention.

[0024] Figure 7 It is a schematic diagram of the enlarged structure of a local section of the alarm component of the present invention.

[0025] The accompanying drawings are marked as follows: 1, cabinet assembly; 101, cabinet member; 102, fastening plate; 103, leak hole; 104, cabinet back plate; 105, dust suction slot hole; 106, plug hole; 107, mounting frame; 108, power metering element; 109, plug column; 110, hinge; 111, cabinet door; 112, soft plug board; 113, touch panel; 114, positioning hole; 115, slot; 116, clamping plate; 117, plug rod; 118, normally closed switch; 11 9. Connecting hole; 2. Dust suction assembly; 201. Intermediate plate; 202. Dust suction channel; 203. Through pipe; 204. Back compartment box; 205. Filter plate; 206. Plate hole; 207. Back fixing plate; 208. Fan; 209. Power supply; 3. Alarm assembly; 301. Front support rod; 302. Front bearing; 303. Rear support rod; 304. Rear bearing; 305. Movable shaft; 306. Wind sensor; 307. Wind fan blade; 308. Alarm. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The anti-theft device for an electric power metering device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained without creative work by ordinary technicians in this field belong to the scope of protection of the present invention.

[0027] Reference Figure 1 The present invention provides an anti-theft device for an electric power metering device, comprising a cabinet assembly 1, a dust collecting assembly 2 is fixedly installed inside the cabinet assembly 1, and an alarm assembly 3 is fixedly installed on the upper end of the cabinet assembly 1;

[0028] In this embodiment, the various power metering components installed in the cabinet assembly 1 will measure the electric energy used by the user. The dust collection component 2 is used to realize the function of removing dust and other foreign particles from the outside. The alarm component 3 is used to realize the alarm effect of stealing the power metering components installed in the cabinet assembly 1 by outsiders. The specific structure and working principle of the above components will be described in detail later.

[0029] Reference Figure 2-Figure 4The cabinet assembly 1 includes a cabinet member 101, and fastening plates 102 are provided at the four corners of the rear side of the cabinet member 101. A leakage hole 103 is opened at the bottom end of the cabinet member 101. A cabinet back plate 104 is fixedly installed on the rear side of the cabinet member 101. A dust suction slot 105 is opened on the cabinet back plate 104, and a plug hole 106 is opened on the cabinet back plate 104. A mounting frame 107 is fixedly installed on the front end surface of the cabinet back plate 104, and a power metering element 108 is fixedly installed on the mounting frame 107. Plugs 109 are fixedly installed on the back of the power metering element 108. The number of the plugs 109 is consistent with the number of the plug holes 106 and is aligned with each other. The plugs 109 are respectively inserted into the corresponding plug holes 106 and are movably connected to each other. A hinge 11 is provided on the left side of the front end of the cabinet member 101. 0, a cabinet door 111 is movably mounted on the left side of the front end of the cabinet member 101 by means of a hinge 110, a soft plug board 112 is mounted on the right end of the cabinet door 111, a touch panel 113 is mounted on the end of the soft plug board 112, a positioning hole 114 is provided on the soft plug board 112, a slot 115 is provided on the right side of the front end of the cabinet member 101, a clamping plate 116 is fixedly mounted on the upper and lower ends of the slot 115, a plug hole is provided on the outer side of the slot 115, the positioning hole 114 can be aligned with the plug hole provided by the slot 115, a plug rod 117 is movably sleeved on the plug hole provided by the slot 115, a normally closed switch 118 is provided inside the slot 115, the touch panel 113 is inserted into the slot 115 and contacts the normally closed switch 118 to put it in an off state, and a connecting hole 119 is provided on the back side of the cabinet member 101;

[0030] In this embodiment, the cabinet member 101 can be fixedly installed outdoors by the fastening plate 102, and the power metering element 108 installed in the cabinet member 101 can measure the power used by the user. The cabinet member 101 can be closed by the cabinet door 111. When the cabinet door 111 closes the cabinet member 101, the soft plug board 112 can be inserted into the slot 115, and the plug rod 117 is used to insert the positioning hole 114 and the plug hole opened by the slot 115, so that the cabinet door 111 is fixed. Since the specific installation method of the power metering element 108 and its power metering principle are conventional technical means used by those skilled in the art, they are not described in detail in this embodiment.

[0031] Reference Figure 5The dust collection component 2 includes a partition 201, which is fixedly installed at the rear end of the cabinet back plate 104, and a dust collection channel 202 is fixedly sleeved on the partition 201. The dust collection channel 202 is aligned with the dust collection slot hole 105 and fixedly sleeved. A through pipe 203 is fixedly sleeved on the partition 201, and the through pipe 203 is aligned with the plug hole 106 and fixedly sleeved. A back bin box 204 is fixedly installed on the back of the cabinet back plate 104, and a filter plate 205 is fixedly installed on the inner side of the back bin box 204. The filter plate 205 is provided with evenly distributed filter holes, and the filter plate 205 is provided with The plate holes 206 are aligned with the through pipe 203, and the pipe openings of the through pipe 203 are respectively fixedly sleeved with the plate holes 206. A back fixing plate 207 is fixedly installed on the back of the back bin box 204, and evenly distributed fans 208 are fixedly installed on the back fixing plate 207. A power supply 209 is fixedly installed on the outer side of the back bin box 204, and the power supply 209 is electrically connected to the fan 208. The power supply 209 supplies power to the fan 208, and the power supply 209 is electrically connected to the normally closed switch 118 through the connecting hole 119, and the power supply 209 controls the switch through the normally closed switch 118;

[0032] In this embodiment, when the staff needs to detect the power metering element 108 installed in the cabinet 101, the cabinet door 111 will be opened, the soft plug board 112 will be pulled out of the slot 115, and the touch panel 113 will no longer contact the normally closed switch 118 inside it. The normally closed switch 118 is not triggered and is in a closed state, so that the power supply 209 supplies power to the fan 208, and the fan 208 starts to exhaust air outward, so that the airflow is sucked in from the dust suction slot 105, passes through the dust suction slot 202 and the filter holes opened by the filter plate 205, and the dust and impurity particles carried in the air are intercepted when passing through the filter holes, and the airflow is discharged outward from the fan 208. In this way, when the cabinet 101 of the device is opened, the dust and impurities carried by the outside air are sucked out at the dust suction slot 105, thereby preventing the power metering element 108 installed therein from being contaminated with dust and impurities, and the dust suction function of the device is realized in this way.

[0033] Reference Figure 6 and Figure 7The alarm component 3 includes a front support rod 301, the number of the front support rods 301 is three and they are evenly installed at the inner front side of the through pipe 203, a front bearing 302 is fixedly installed on the inner side of the rod body of the front support rod 301, three rear support rods 303 are evenly connected to the inner rear side of the through pipe 203, a rear bearing 304 is fixedly installed on the inner side of the rod body of the rear support rod 303, a movable shaft 305 is movably sleeved between the front bearing 302 and the rear bearing 304, a wind sensor 306 is fixedly installed on the shaft body of the movable shaft 305, and the outer side of the wind sensor 306 is fixedly connected with evenly distributed wind blades 307, an alarm 308 is fixedly installed on the upper end of the cabinet 101, the wind sensor 306 is electrically connected to the alarm 308, and the wind sensor 306 electrically controls the alarm 308 to start;

[0034] In this embodiment, when an outsider opens the cabinet door 111 and steals the power metering element 108 installed inside the cabinet body 101, the plug 109 installed on the back of the power metering element 108 will be detached from the plug hole 106. At this time, the pipeline of the through pipe 203 will not be blocked. Under the exhaust action of the fan 208, the air flow in the pipeline of the through pipe 203 begins to flow, and the wind sensor 306 begins to rotate under the action of the wind fan blades 307. The rotation of the wind sensor 306 generates an induced electrical signal, thereby controlling the alarm 308 to start and start the alarm. Since the alarm principle of the alarm 308 is a conventional technical means known to those skilled in the art, the internal structure and working principle of the alarm 308 are not described in detail. This embodiment mainly describes the triggering method of the alarm structure of the device, and the anti-theft effect of the device is achieved by this method.

[0035] The working principle of the present invention is as follows: the cabinet 101 can be fixedly installed outdoors through the fastening plate 102, the power metering element 108 installed in the cabinet 101 can measure the power used by the user, the cabinet 101 can be closed by the cabinet door 111, when the cabinet door 111 closes the cabinet 101, the soft plug board 112 can be inserted into the slot 115, and the plug rod 117 is inserted into the jack provided by the positioning hole 114 and the slot 115, so that the cabinet door 111 is fixed. When the operator needs to test the power metering element 108 installed in the cabinet 101, the cabinet door 111 will be opened, the soft plug board 112 will be pulled out from the slot 115, the touch panel 113 will no longer contact the normally closed switch 118 inside it, and the normally closed switch 118 will not be triggered and will be in a closed state, so that the power supply 209 will supply power to the fan 208, and the fan 208 will start to exhaust air outward, so that the airflow will be sucked in from the dust collection slot 105, pass through the dust collection slot 202 and pass through the filter plate 205. The filter holes are provided, and the dust and impurities carried in the air are intercepted when passing through the filter holes, and the air flow is discharged outward from the fan 208. In this way, when the cabinet 101 is opened, the dust and impurities carried by the outside air are sucked out at the dust suction slot 105, thereby preventing the power metering element 108 installed inside from being contaminated with dust and impurities. In this way, the dust suction function of the device is realized. When an outsider opens the cabinet door 111 and opens the power metering element installed inside the cabinet 101, When the component 108 is stolen, the plug 109 installed on the back of the power metering element 108 will be detached from the plug hole 106, and the pipeline of the through pipe 203 will not be blocked. Under the exhaust action of the fan 208, the air flow in the pipeline of the through pipe 203 begins to flow, and the wind sensor 306 begins to rotate under the action of the wind fan blades 307. The rotation of the wind sensor 306 generates an induced electrical signal, thereby controlling the alarm 308 to start and start the alarm, and the anti-theft effect of the device is achieved in this way.

[0036] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0037] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0038] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-theft device for an electric power metering device, characterized in that: It comprises a cabinet assembly (1), a dust collection assembly (2) is fixedly installed inside the cabinet assembly (1), and an alarm assembly (3) is fixedly installed on the upper end of the cabinet assembly (1); The cabinet assembly (1) comprises a cabinet member (101), wherein four rear corners of the cabinet member (101) are provided with fastening plates (102), a leakage hole (103) is provided at the bottom end of the cabinet member (101), a cabinet back plate (104) is fixedly mounted on the rear side of the cabinet member (101), a dust collection slot (105) is provided on the cabinet back plate (104), and a plug hole (106) is provided on the cabinet back plate (104), wherein the cabinet back plate (104) is provided with a dust collection slot (105). A mounting frame (107) is fixedly mounted on the front end surface of the cabinet back plate (104), and a power metering element (108) is fixedly mounted on the mounting frame (107). A plug (109) is fixedly mounted on the back of each power metering element (108). The number of the plugs (109) is consistent with the number of the plug holes (106) and they are aligned with each other. The plugs (109) are respectively inserted into the corresponding plug holes (106) and are movably connected to each other.

2. The anti-theft device for an electric power metering device according to claim 1, characterized in that: A hinge (110) is provided on the left side of the front end of the cabinet member (101); a cabinet door (111) is movably mounted on the left side of the front end of the cabinet member (101) by means of the hinge (110); a soft plug board (112) is mounted on the right end of the cabinet door (111); a touch panel (113) is mounted on the end of the soft plug board (112); a positioning hole (114) is provided on the soft plug board (112); a slot (115) is provided on the right side of the front end of the cabinet member (101); the slot (115) is fixedly mounted at both the upper and lower ends. A clamping plate (116) is provided, a plug hole is provided on the outer side of the slot (115), the positioning hole (114) can be aligned with the plug hole provided in the slot (115), a plug rod (117) is movably sleeved on the plug hole provided in the slot (115), a normally closed switch (118) is provided inside the slot (115), the touch plate (113) is inserted into the slot (115) and contacts the normally closed switch (118) to put it in an open state, and a connecting hole (119) is provided on the back side of the cabinet member (101).

3. The anti-theft device for an electric power metering device according to claim 1, characterized in that: The dust collection component (2) comprises a partition (201), the partition (201) being fixedly mounted on the rear end of the cabinet back plate (104), a dust collection channel (202) being fixedly sleeved on the partition (201), the dust collection channel (202) and the dust collection slot hole (105) being aligned with each other and fixedly sleeved, a through pipe (203) being fixedly sleeved on the partition (201), the through pipe (203) being aligned with the plug hole (106) The cabinet back plate (104) is fixedly mounted with a back bin box (204) on the back side, and a filter plate (205) is fixedly mounted on the inner side of the back bin box (204). The filter plate (205) is provided with evenly distributed filter holes, and the filter plate (205) is provided with plate holes (206) aligned with the through pipe (203). The pipe openings of the through pipe (203) are fixedly mounted with the plate holes (206).

4. The anti-theft device for an electric power metering device according to claim 3, characterized in that: A back fixing plate (207) is fixedly mounted on the back of the back bin box (204), and evenly distributed fans (208) are fixedly mounted on the back fixing plate (207). A power supply (209) is fixedly mounted on the outer side of the back bin box (204), and the power supply (209) is electrically connected to the fans (208). The power supply (209) supplies power to the fans (208). The power supply (209) is electrically connected to the normally closed switch (118) through the connection hole (119), and the power supply (209) controls the switch through the normally closed switch (118).

5. The anti-theft device for an electric power metering device according to claim 1, characterized in that: The alarm assembly (3) comprises a front support rod (301), wherein the number of the front support rods (301) is three and they are evenly mounted on the inner front side of the through pipe (203), a front bearing (302) is fixedly mounted on the inner side of the rod body of the front support rod (301), and three rear support rods (303) are evenly connected to the inner rear side of the through pipe (203).

6. The anti-theft device for an electric power metering device according to claim 5, characterized in that: A rear bearing (304) is fixedly mounted on the inner side of the rod body of the rear support rod (303); a movable shaft (305) is movably sleeved between the front bearing (302) and the rear bearing (304); a wind sensor (306) is fixedly mounted on the shaft body of the movable shaft (305); evenly distributed wind blades (307) are fixedly connected to the outer side of the wind sensor (306); an alarm (308) is fixedly mounted on the upper end of the cabinet member (101); the wind sensor (306) is electrically connected to the alarm (308); and the wind sensor (306) electrically controls the alarm (308) to start.