An electricity metering device

Abstract

The application discloses a kind of electric power metering equipment, including metering box and meter, and the metering box is divided into multiple table cavities by vertical partition plate, multiple meters are evenly installed in table cavity, and locking mechanism is arranged between table cavity and meter;Locking mechanism includes meter cover, lock rod, worm wheel and worm, meter is fixedly installed in meter cover by bolt, the outside of meter cover is provided with multiple side plates that are slidingly matched with the two inner sides of table cavity, lock rod is vertically downward and slidingly installed in the inner wall of table cavity, and the telescopic end of lock rod is matched with the lock hole on one of side plates, worm wheel is rotatably installed in the inner wall of table cavity and is engaged with the threaded section on the upper part of lock rod, worm is rotatably installed in the inner wall of table cavity and is engaged with gear;The lead angle of worm is less than the equivalent friction angle between meshing teeth;The outer end of worm is provided with lock cylinder;Lock cylinder is matched with T-shaped wrench.The electric power metering equipment is safe, greatly reduces the possibility of theft, and ensures the safety of others or public property.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a power metering device. Background Technology

[0002] Electricity metering boxes are the main equipment used by power companies to track electricity usage. Their safety and accuracy are crucial elements of electricity statistics. Electricity metering boxes mainly consist of combined current transformers (which collect three-phase current and voltage signals), the box itself, meters, surge arresters, vacuum circuit breakers (available in prepaid systems), etc. Current accuracy is 0.2S, and voltage accuracy is 0.2. The internal components may vary depending on the specific application. However, the meter (also called an electricity meter) is the primary working component, and electricity metering is now generally based on a one-meter-per-household principle.

[0003] Currently, many electricity metering boxes lack dedicated anti-theft measures. They typically only have simple locks on the door, which are easily pried open or damaged. Furthermore, to facilitate timely handling of tripped circuits or observation of indicator lights by users or power supply personnel, the door of the electricity metering box is usually left open, providing easy access for theft. Therefore, there is an urgent need for an electricity metering device that can reduce electricity theft or theft of meters. Summary of the Invention

[0004] The purpose of this invention is to provide an electricity metering device to solve the problem that existing electricity metering devices do not have specific anti-theft measures, which may lead to electricity theft or the theft and sale of meters.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An electricity metering device includes a metering box and metering meters. The metering box is divided into multiple meter chambers by vertical partitions. Multiple metering meters are evenly installed within each meter chamber. A locking mechanism is provided between each meter chamber and each metering meter. The locking mechanism includes a watch sleeve, a locking rod, a worm gear, and a worm. The meter is fixedly installed inside the watch sleeve by bolts. Multiple side plates are provided on the outer side of the watch sleeve, which slide and engage with the two inner sides of the watch cavity. The locking rod is vertically downward and slidably installed in the inner wall of the watch cavity, and the telescopic end of the locking rod is adapted to a lock hole on one of the side plates. The worm gear is rotatably installed in the inner wall of the watch cavity and meshes with the threaded section of the upper part of the locking rod. The worm is rotatably installed in the inner wall of the watch cavity and meshes with the driven gear. The lead angle of the worm is smaller than the equivalent friction angle between the meshing gear teeth; The outer end of the worm gear is provided with a lock cylinder; The lock cylinder is compatible with a T-shaped wrench.

[0006] A further technical solution is that the locking rod is slidably installed in a groove on the inner wall of the watch cavity via a first reset spring.

[0007] A further technical solution is that the locking rod includes an outer rod and an inner rod that is slidably installed at the bottom of the outer rod.

[0008] A further technical solution is that a second return spring is provided inside the outer rod to press against the inner rod.

[0009] A further technical solution is that the upper and lower parts of the watch cover are both provided with handles.

[0010] A further technical solution is that the side surface of the side plate having the lock hole is set to a tapered shape.

[0011] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This invention proposes an electricity metering device that uses a meter sleeve to tightly enclose and protect the meter, preventing unauthorized wired connections for electricity theft and protecting personal or public property from loss. A locking lever secures the meter sleeve inside the meter box, preventing theft and ensuring property safety. Furthermore, the meter sleeve is easy to install and remove with a simple push and pull. A worm gear and worm control the locking lever's locking and unlocking of the meter sleeve, providing a self-locking effect to prevent accidental opening or prying. A specialized T-wrench and lock cylinder further enhance security and significantly reduce the possibility of theft. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an electric metering device according to the present invention.

[0013] Figure 2 For the present invention Figure 1 A schematic diagram of the locking mechanism.

[0014] Figure 3 For the present invention Figure 2 An enlarged structural diagram of part A in the middle.

[0015] Figure 4 This is a schematic diagram of the T-shaped wrench in this invention.

[0016] Figure 5 For the present invention Figure 1 A schematic diagram of the center locking rod.

[0017] Figure 6 For the present invention Figure 1 Schematic diagram of the middle side plate.

[0018] Reference numerals in the attached drawings: 1. Measuring box; 2. Measuring gauge; 3. Vertical partition; 4. Locking mechanism; 5. Gauge sleeve; 6. Locking rod; 61. Outer rod; 62. Inner rod; 63. Second return spring; 7. Worm gear; 8. Worm; 9. Side plate; 10. Lock hole; 11. Lock cylinder; 12. T-wrench; 13. First return spring; 14. Handle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Example 1: This implementation example Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an electricity metering device includes a metering box 1 and metering meters 2. The metering box 1 is divided into multiple meter chambers by vertical partitions 3. Multiple metering meters 2 are evenly installed in the meter chambers, and a locking mechanism 4 is provided between the meter chambers and the metering meters 2; wherein, The locking mechanism 4 includes a watch sleeve 5, a locking rod 6, a worm gear 7, and a worm 8. The meter 2 is fixedly installed inside the watch sleeve 5 by bolts. Multiple side plates 9 are provided on the outside of the watch sleeve 5, which slide and engage with the two inner sides of the watch cavity. The locking rod 6 is vertically downward and slidably installed in the inner wall of the watch cavity. The telescopic end of the locking rod 6 is adapted to the locking hole 10 on one of the side plates 9. The worm gear 7 is rotatably installed in the inner wall of the watch cavity and meshes with the threaded section of the upper part of the locking rod 6. The worm 8 is rotatably installed in the inner wall of the watch cavity and meshes with the driven gear 7. The lead angle of the worm 8 is smaller than the equivalent friction angle between the meshing gear teeth; A lock cylinder 11 is provided at the outer end of the worm gear 8; Lock cylinder 11 is compatible with T-wrench 12.

[0026] Meter 2 is installed in the fully protective cover 5. Meter 5, along with meter 2, is then pushed into the meter cavity. Installation and removal are achieved by sliding the multiple side plates 9 on both sides of the cover 5 against the inner wall of the cavity. As the side plates 9 slide, they push up the telescopic end of the locking rod 6. After the side plates 9 slide into place, the telescopic end of the locking rod 6 falls into the locking hole 10 of the side plates 9, locking the cover 5 and indicating that installation is complete. At this point, the cover 5 cannot be pulled out, preventing others from connecting cables to meter 2 to steal electricity or steal meter 2, thus ensuring the safety of public and personal property. When it is necessary to remove the meter 2, simply use a special T-wrench 12 to fit the specially shaped lock cylinder 11, which will drive the worm gear 8 to rotate. The worm gear 8 will then drive the worm wheel 7 to rotate. The worm wheel 7 will engage with the threaded section of the lock rod 6, thereby lifting the lock rod 6 upwards until the bottom of the lock rod 6 is completely disengaged from the latch 10, thus unlocking the device. The meter sleeve 5 can then be pulled out at will. During this process, the worm gear 8 and the worm wheel 7 have a self-locking effect. Whether in the locked or unlocked state, the lock rod 10 will not move spontaneously, ensuring the reliability of the device and the security against theft.

[0027] Note: The lock cylinder 11 can be selected according to the actual situation. It can be a simple protrusion with a special shape designed to fit the protrusion and the T-wrench 12. Alternatively, the lock cylinder 11 can be a common rotary lock, requiring a matching key to be inserted into the lock to turn the rotary lock, thereby driving the rotation of the worm gear 8. The key can be installed on the head of the T-wrench 12. Of course, other structures that achieve the locking effect are also possible.

[0028] Preferably, the locking rod 6 is slidably mounted in a groove on the inner wall of the watch cavity via the first return spring 13.

[0029] The first return spring 13 is used to ensure the reliability of the locking mechanism 4, and can also ensure the locking effect when the worm gear 7 and worm 8 have problems.

[0030] Preferably, the locking rod 6 includes an outer rod 61 and an inner rod 62 slidably mounted on the bottom of the outer rod 61.

[0031] The locking lever 6 is designed with a sliding fit between the outer lever 61 and the inner lever 62. This is mainly because when installing the cover 5, it is not necessary to activate the worm gear 8 every time. It is only necessary to control the entire upward stroke of the locking lever 6 to be greater than the depth of the inner lever 62 within the locking hole 10 on the side plate 9. This saves installation steps, time, and effort.

[0032] Preferably, a second return spring 63 is provided inside the outer rod 64 to abut against the inner rod 62.

[0033] The second return spring 63 is used to ensure that the inner rod 62 is always in the downward extended state, that is, to ensure that it cooperates with the lock hole 10 to achieve a locking effect.

[0034] Preferably, the upper and lower parts of the watch sleeve 5 are provided with handles 14.

[0035] 14 Handles allow employees to easily pull out the watch cover 5.

[0036] Preferably, such as Figure 6 As shown, the side of the side plate 9 with the lock hole 10 is tapered.

[0037] The tapered side plate 9 facilitates entry into the groove of the vertical partition 3.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electricity metering device, comprising a metering box (1) and a meter (2), characterized in that: The metering box (1) is divided into multiple meter chambers by vertical partitions (3), and multiple metering instruments (2) are evenly installed in the meter chambers. A locking mechanism (4) is provided between the meter chambers and the metering instruments (2); wherein, The locking mechanism (4) includes a watch sleeve (5), a locking rod (6), a worm gear (7), and a worm (8). The meter (2) is fixedly installed inside the watch sleeve (5) by bolts. Multiple side plates (9) are provided on the outside of the watch sleeve (5) and slide to engage with the two inner sides of the watch cavity. The locking rod (6) is vertically downward and slides in the inner wall of the watch cavity. The telescopic end of the locking rod (6) is adapted to the lock hole (10) on one of the side plates (9). The worm gear (7) is rotatably installed in the inner wall of the watch cavity and meshes with the threaded section of the upper part of the locking rod (6). The worm (8) is rotatably installed in the inner wall of the watch cavity and meshes with the driven gear (7). The lead angle of the worm (8) is smaller than the equivalent friction angle between the meshing gear teeth; The outer end of the worm (8) is provided with a lock cylinder (11). The lock cylinder (11) is compatible with the T-wrench (12).

2. The power metering equipment according to claim 1, characterized in that: The locking rod (6) is slidably mounted in the groove on the inner wall of the watch cavity via the first return spring (13).

3. The power metering equipment according to claim 1, characterized in that: The locking rod (6) includes an outer rod (61) and an inner rod (62) slidably mounted on the bottom of the outer rod (61).

4. The power metering equipment according to claim 1, characterized in that: The outer rod (64) is provided with a second return spring (63) that abuts against the inner rod (62).

5. The power metering equipment according to claim 1, characterized in that: The upper and lower parts of the watch cover (5) are provided with handles (14).

6. The power metering equipment according to claim 1, characterized in that: The side of the side plate (9) having the lock hole (10) is tapered.

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