Electricity larceny prevention device of metering cabinet
By designing a metering cabinet anti-theft device including hammers, positioning blocks and safety components, the problem of not triggering when opening the box door at a small angle in the prior art is solved, and the safety and flexibility of anti-theft are improved.
Patent Information
- Application Number
- CN202421034540.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When the anti-theft device of the existing metering cabinet opens the box door at a small angle, the stroke switch probability does not trigger, resulting in the failure of the anti-theft function, and the maintenance worker is prone to trigger an alarm by mistake when opening the box door.
An anti-theft device including a box, a box door, a stroke switch, a hammer, a positioning block and a safety component is designed. After the box door is opened, the hammer triggers the stroke switch through the spring action to ensure that the stroke switch can be triggered when the box door is pulled open by external force; the safety component passes through the stopper, the spring and the locking component to avoid mistriggering and illegal damage.
It effectively solves the problem that the stroke switch does not trigger when opening the box door at a small angle, improves the safety and flexibility of the anti-power stolen power, and avoids the situation where maintenance workers accidentally trigger the alarm.
Smart Images
Figure CN222653027U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of metering cabinets, in particular to an anti-electricity theft device of a metering cabinet. Background Art
[0002] The power meter cabinet is a device used for power metering and monitoring, usually used in power systems. It usually includes components such as electric energy meters, current transformers, voltage transformers, data acquisition devices, etc., which are used to accurately measure power consumption and monitor power quality. At the same time, the power meter cabinet can also be used for power billing and settlement to ensure accurate measurement and billing of power consumption.
[0003] To prevent electricity theft, most existing metering cabinets are equipped with a travel switch at the door, which can not only be used for anti-theft purposes, but also record the number of door openings to facilitate background statistics of maintenance records. After the door is opened, the travel switch is triggered, and the travel switch alarms, or the circuit breaker is connected to cut off the power to prevent electricity theft. However, since the travel switch requires a certain stroke to be triggered, this gives electricity thieves a certain opportunity to open the door only a gap, and destroy or fix the travel switch before it is triggered, so that it cannot be triggered, resulting in abnormal working state of the anti-electricity theft device. Utility Model Content
[0004] The purpose of the utility model is to provide an anti-electricity theft device for a metering cabinet to solve the problems raised in the above background technology.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-electricity theft device for a metering cabinet, comprising a box body and a box door, the box door being hinged on the surface of the box body, and also comprising a travel switch installed at the bottom of the box body, and a toggle piece being installed on the surface of the travel switch;
[0006] A guide rail is fixedly connected to the bottom of the box body, a hammer adapted to the toggle member is slidably connected to the guide rail, the hammer is connected to the guide rail through a spring, a square hole is opened on one side of the guide rail, and a positioning block is slidably connected through the square hole, and when the box door is closed, the positioning block is pressed against one side of the hammer by the box door;
[0007] The box body is also provided with a safety assembly for preventing the travel switch from being triggered by mistake.
[0008] Preferably, the safety component includes a block, a groove adapted to the block is opened at the bottom of the box body, a positioning rod is fixedly connected to the bottom of the groove, the positioning rod is passed through the block, and the block is connected to the box body through a tension spring, and a stretching component is arranged on the surface of the block.
[0009] Preferably, the stretching assembly includes a pull block fixedly connected to the surface of the block, the pull block is "L"-shaped, and the surfaces of the box body and the box door are respectively fixedly connected with a connecting buckle B and a connecting buckle A, lead seals are pierced on the surfaces of the connecting buckle A and the connecting buckle B, and a pull rope is sleeved on the surface of the lead seal, and one end of the pull rope away from the lead seal extends into the interior of the box body and is sleeved on the pull block.
[0010] Preferably, a through hole for the pull rope to pass through is provided on the surface of the door near the connecting buckle A.
[0011] Preferably, it also includes a locking assembly, which includes a fixing plate fixedly connected to the bottom of the box body close to the side of the block, the top of the fixing plate is fixedly connected to a lock body, a lock core is arranged inside the lock body, one side of the lock core is fixedly connected to an adjustment block, one side of the adjustment block is rotatably connected to an "L"-shaped pull rod, and the bent end of the pull rod is arranged on the side of the pull rope away from the adjustment block.
[0012] Preferably, a lock hole adapted to the lock body is provided on the surface of the door.
[0013] Preferably, tooth grooves are provided on opposite sides of the hammer and the positioning block.
[0014] The beneficial effects of the utility model are as follows:
[0015] The utility model changes the travel switch which is triggered by the opening of the box door to the travel switch which is triggered by the hammer after the box door is opened. As long as the box door is pulled open by an external force, the pressure on the positioning block will be reduced, and the positioning block will be unable to maintain the fixed state of the hammer, and will be ejected by the elastic force of the spring, thereby triggering the travel switch. This effectively solves the problem that the travel switch is unlikely to be triggered when the box door is opened at a small angle, thereby improving the overall safety. In addition, by providing a safety component, it also avoids the problem of accidental triggering of the alarm when the maintenance worker opens the box door, thereby improving the flexibility of the entire alarm device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the utility model for showing the state when the box door is opened;
[0018] Figure 3 This is a partial schematic diagram of the utility model for displaying the internal structure of the box;
[0019] Figure 4 For this utility model Figure 3 A in the enlarged view;
[0020] Figure 5 This is a schematic diagram for illustrating a locking assembly of the present utility model;
[0021] Figure 6 This is a schematic diagram of the utility model for showing the state when the travel switch is triggered;
[0022] Figure 7 This is a schematic diagram of the utility model for displaying a lead seal and its surface structure.
[0023] In the figure: 1. box body; 11. box door; 12. round hole; 13. connecting buckle A; 14. connecting buckle B; 15. lead seal; 2. guide rail; 21. hammer; 211. spring; 22. positioning block; 23. travel switch; 231. toggle member; 3. block; 31. positioning rod; 311. tension spring; 32. fixing plate; 321. lock body; 322. adjusting block; 323. pull rod; 33. pull block; 34. pull rope. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figures 1 to 7 As shown, an embodiment of the utility model provides an anti-electricity theft device for a metering cabinet, including a box body 1 and a box door 11, the box door 11 is hinged on the surface of the box body 1, and also includes a travel switch 23 installed on the bottom of the box body 1, and a toggle member 231 is installed on the surface of the travel switch 23. When the toggle member 231 is toggled to one side, the travel switch 23 is triggered, and the travel switch 23 can be connected to an external alarm device or a circuit breaker, and an alarm is sounded or the power supply is disconnected after being triggered.
[0026] A guide rail 2 is fixedly connected to the bottom of the box body 1, and a hammer 21 adapted to the toggle member 231 is slidably connected inside the guide rail 2. The hammer 21 is connected to the guide rail 2 through a spring 211, and both ends of the spring 211 are fixedly connected to the hammer 21 and the guide rail 2 respectively. A square hole is opened on one side of the guide rail 2, and a positioning block 22 is slidably connected through the square hole. When the box door 11 is closed, the positioning block 22 is pressed tightly against one side of the hammer 21 by the box door 11.
[0027] A safety assembly is also provided in the housing 1 to prevent the travel switch 23 from being triggered by mistake.
[0028] Specifically, under normal conditions, the hammer 21 is pressed into the guide rail 2 and the spring 211 is compressed, and then the box door 11 is closed and pressed against the positioning block 22 to position the hammer 21. The setting length of the positioning block 22 is determined according to the length required to just press against the hammer 21. When the box door 11 presses against the positioning block 22, the positioning block 22 is in a maximum force state, at which time the hammer 21 can be just positioned. However, once the box door 11 is opened, the force on the positioning block 22 will decrease, and the positioning block 22 will not be able to maintain the positioning of the hammer 21. Therefore, the hammer 21 will be fired under the elastic force of the spring 211, triggering the travel switch 23.
[0029] like Figure 4 , Figure 5 and Figure 6 As shown, in the present embodiment, the insurance component includes a block 3, and a groove adapted to the block 3 is provided at the bottom of the box body 1, and the block 3 can be completely placed in the groove. A positioning rod 31 is fixedly connected to the bottom of the groove, and the positioning rod 31 is passed through the block 3, and the block 3 is connected to the box body 1 through a tension spring 311. A stretching component is provided on the surface of the block 3. When the block 3 is lifted and the tension spring 311 is stretched, the block 3 can be against one side of the lower end of the toggle member 231, so that when the hammer 21 is fired, it strikes the other side of the toggle member 231. At this time, due to the obstruction of the block 3, the hammer 21 can be prevented from pushing the toggle member 231 to move, thereby preventing the travel switch 23 from being triggered. This state is suitable for engineers to use when maintaining and repairing the metering cabinet.
[0030] Furthermore, the stretching assembly includes a pull block 33 fixedly connected to the surface of the block 3, and the pull block 33 is "L"-shaped. The surfaces of the box body 1 and the box door 11 are respectively fixedly connected with a connecting buckle B14 and a connecting buckle A13. The surfaces of the connecting buckle A13 and the connecting buckle B14 are penetrated with a lead seal 15. When the box door 11 is closed, the lead seal 15 is respectively passed through the connecting buckle A13 and the connecting buckle B14 for sealing. When the lead seal 15 is damaged in a non-maintenance state, it means that the metering cabinet may be subject to electricity theft. A pull rope 34 is sleeved on the surface of the lead seal 15. The end of the pull rope 34 away from the lead seal 15 extends into the interior of the box body 1 and is sleeved on the pull block 33. Under normal conditions, the pull rope 34 will lift and tighten the pull block 33, thereby moving the block 3 upward and blocking the toggle member 231.
[0031] Specifically, when the lead seal 15 is abnormally damaged in a non-maintenance state, the electricity thief wants to open the box door 11, and needs to cut the lead seal 15 and remove it from the connecting buckle A13 and the connecting buckle B14. During the removal process, the draw cord 34 on the lead seal 15 will slide out. After it is no longer tightened by the draw cord 34, the tension spring 311 pulls the block 3 down into the groove, thereby leaving moving space for the toggle member 231. At this time, since it is illegal damage, the toggle member 231 can normally trigger the travel switch 23.
[0032] Furthermore, a through hole for the pull rope 34 to pass through is opened on the surface of the box door 11 near the connecting buckle A13, and the pull rope 34 is inserted into the through hole.
[0033] like Figure 4 and Figure 5 As shown, in the present embodiment, a locking assembly is also included, which includes a fixing plate 32 fixedly connected to the bottom of the box body 1 near the side of the block 3, a lock body 321 is fixedly connected to the top of the fixing plate 32, a lock core is arranged inside the lock body 321, a lock hole is arranged on the surface of the lock body 321, the lock body 321 is a conventional mortise lock, which is the prior art, an adjustment block 322 is fixedly connected to one side of the lock core, the adjustment block 322 is a long strip of plate, and an "L"-shaped pull rod 323 is rotatably connected to one side of the adjustment block 322, and the bent end of the pull rod 323 is arranged on the side of the pull rope 34 away from the adjustment block 322.
[0034] Specifically, when engineers need to maintain and inspect the devices in the metering cabinet, they can insert the unlocking key into the lock hole and rotate the lock core to drive the adjusting block 322 to rotate, so that the pull rod 323 peels the pull rope 34 off the surface of the pull block 33. During this process, the adjusting block 322 can be horizontally blocked at the bottom of the bent end of the pull block 33 to prevent the block 3 from falling, so that the block 3 continues to block the side of the toggle member 231. At this time, cutting the lead seal 15 will not cause the block 3 to fall, and opening the box door 11 will not trigger the travel switch 23.
[0035] A round hole 12 adapted to the lock body 321 is provided on the surface of the door 11 , and a key can be inserted through the round hole 12 .
[0036] The hammer 21 and the positioning block 22 are provided with tooth grooves on their opposite sides. The tooth grooves can increase the contact friction force so that the positioning block 22 can better position the hammer 21.
[0037] Working principle:
[0038] When the electricity thief cuts the lead seal 15 and wants to open the box door 11, the lead seal 15 is removed from the connecting buckle A13 and the connecting buckle B14, and the pull rope 34 sleeved on the lead seal 15 will slide down. When the upper end of the pull rope 34 is not restricted, it cannot continue to pull the pull block 33. Therefore, the block 3 will move downward under the downward pulling force of the tension spring 311 and get stuck in the groove. At this time, the block 3 no longer resists the toggle member 231. Therefore, when the electricity thief opens the box door 11, the pressing force of the positioning block 22 on the hammer 21 is weakened, and the hammer 21 cannot be maintained in a fixed state. Therefore, under the rebound force of the spring 211, the hammer 21 is pushed outward to fire, and pushes the toggle member 231, causing it to rotate and trigger the travel switch 23, thereby triggering an alarm or power failure.
[0039] When engineers perform routine maintenance and inspection, they can insert a key into the lock hole through the round hole 12 and turn the lock core to rotate the adjustment block 322 and drive the pull rod 323 to pull the pull rope 34 off the pull block 33. At the same time, the adjustment block 322 will abut against the lower end of the pull block 33 to prevent the block 3 from moving downward, so that the block 3 is in a state of blocking one side of the toggle member 231. At this time, destroying or removing the lead seal 15 will not cause the block 3 to move downward, and then when the box door 11 is opened, the hammer 21 will not trigger the toggle member 231, causing the travel switch 23 to be triggered.
[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-electricity theft device for a metering cabinet, comprising a cabinet body (1) and a cabinet door (11), wherein the cabinet door (11) is hinged on the surface of the cabinet body (1), and is characterized in that: It also includes a travel switch (23) installed at the bottom of the box body (1), and a toggle member (231) is installed on the surface of the travel switch (23); A guide rail (2) is fixedly connected to the bottom of the box body (1), a hammer (21) adapted to the toggle member (231) is slidably connected to the guide rail (2), the hammer (21) is connected to the guide rail (2) via a spring (211), a square hole is provided on one side of the guide rail (2), and a positioning block (22) is slidably connected via the square hole, and when the box door (11) is closed, the positioning block (22) is pressed against one side of the hammer (21) by the box door (11); A safety component for preventing the travel switch (23) from being triggered by mistake is also arranged in the box body (1).
2. The anti-electricity theft device for a metering cabinet according to claim 1 is characterized in that: The safety component comprises a stopper (3); a groove adapted to the stopper (3) is provided at the bottom of the box body (1); a positioning rod (31) is fixedly connected to the bottom of the groove; the positioning rod (31) is inserted into the stopper (3); the stopper (3) is connected to the box body (1) via a tension spring (311); and a tension component is provided on the surface of the stopper (3).
3. The anti-electricity theft device for a metering cabinet according to claim 2 is characterized in that: The stretching assembly comprises a pull block (33) fixedly connected to the surface of the stopper (3), the pull block (33) being in an "L" shape, the surfaces of the box body (1) and the box door (11) being fixedly connected with a connecting buckle B (14) and a connecting buckle A (13) respectively, the surfaces of the connecting buckle A (13) and the connecting buckle B (14) being provided with a lead seal (15), the surface of the lead seal (15) being provided with a pull rope (34), the end of the pull rope (34) away from the lead seal (15) extending into the interior of the box body (1) and being provided on the pull block (33).
4. The anti-electricity theft device for a metering cabinet according to claim 3 is characterized in that: A through hole for the pull rope (34) to pass through is provided on the surface of the box door (11) near the connecting buckle A (13).
5. The anti-electricity theft device for a metering cabinet according to any one of claims 1 to 4, characterized in that: The locking assembly also includes a locking assembly, which includes a fixing plate (32) fixedly connected to the bottom of the box body (1) near the side of the stopper (3), a lock body (321) fixedly connected to the top of the fixing plate (32), a lock core arranged inside the lock body (321), an adjustment block (322) fixedly connected to one side of the lock core, an "L"-shaped pull rod (323) rotatably connected to one side of the adjustment block (322), and a bent end of the pull rod (323) arranged on the side of the pull rope (34) away from the adjustment block (322).
6. The anti-electricity theft device for a metering cabinet according to claim 5, characterized in that: The surface of the box door (11) is provided with a lock hole (12) adapted to the lock body (321).
7. The anti-electricity theft device for a metering cabinet according to claim 1 is characterized in that: The hammer (21) and the positioning block (22) are provided with tooth grooves on opposite sides thereof.