A large-current loading tool for an electric energy meter

Abstract

The utility model discloses a kind of current loading frock for electric energy meter, belong to electric energy meter technical field;The device includes: substrate, its top is equipped with jacking cylinder;Jacking plate is installed on the output shaft of jacking cylinder, and is located above substrate;Rotary shaft is installed on jacking plate;Current column is hinged on rotary shaft;Among them: the first end of the current column is connected with the first end of substrate by tension spring, and the tail end of the current column is equipped with contact portion.The utility model is not very high to the consistency installation requirement of terminal sleeve screw subassembly, and redundancy is relatively big, without considering whether the screw head is missing end surface.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, specifically to a high current loading fixture for electricity meters. Background Technology

[0002] Products that pass the semi-finished product test will be assembled with structural components such as the base, cover, terminal block, and module. Then, they will be moved to the next process for 80~100A current electrical performance testing. This process uses current terminals. The manganese copper of the terminal block achieves the current electrical performance test by making close contact with the current terminal. The traditional contact method is to use the spring at the head of the expansion current terminal to achieve reliable contact between the beryllium copper and the manganese copper of the product. If any terminal sleeve has poor contact, the product will fail the test.

[0003] Existing technology places extremely high demands on product consistency. The thickness of the current terminals is calculated based on the dimensions of the upper surface of the product terminal sleeve and the lower surface of the manganese bronze. Most overseas products use pre-installed screws, which are pre-assembled onto the terminal sleeve by an automatic screw-screw machine. However, due to inconsistencies in the angle between the thread inlet and the cross groove of the screw head, as well as the inconsistency between the thread inlet and the end face angle on the terminal sleeve, the depth to which the screws are driven into the terminal sleeve by the automatic screw-screw machine varies, resulting in different thread counts. Furthermore, vibrations caused by the movement of materials during external transportation can cause the screws to loosen or tighten. In such cases, the dimensions of the upper surface of the terminal sleeve and the lower surface of the manganese bronze are not fixed values. When the dimensions are smaller than the thickness of the current terminal, the current terminal cannot penetrate deeply into the terminal sleeve and will be blocked. If even one current terminal is restricted from entering, it will hinder reliable contact of other current terminals, leading to test failure.

[0004] In the final assembly process, employees manually assemble terminal blocks, terminal sleeve screw assemblies, and relays. The terminal sleeve screw assemblies are pre-assembled by an automatic screw machine before arrival. However, the assembly requirements for the terminal sleeve screws are extremely high; the screw head cannot extend beyond the end face of the terminal sleeve. Because the thread depth of each screw is different, and the thread depth of the terminal sleeve is also different, the screw penetration depth in the assembled assembly is inconsistent. It is impossible to guarantee that the penetration depth of each set of terminal sleeve screws is exactly the same. The screws on the assembled terminal sleeve screw assembly are actually still loose. During material handling, the vibration of the transport vehicle can cause the penetration depth of the loose screws to shift again. Similarly, when employees touch the terminal sleeve screws during assembly, they can cause them to rotate, resulting in displacement of the screw depth. Finally, in the assembled product, the screw depth of each terminal sleeve cannot be guaranteed to be consistent, which greatly affects the electrical performance testing in subsequent processes. If the current column is not deeply penetrated, it will hinder the penetration of other current columns, leading to test failure. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency high-current loading fixture for electricity meters.

[0006] To solve the above-mentioned technical problems, this utility model provides a high-current loading fixture for electricity meters, comprising: A base plate, with a lifting cylinder mounted on its top; A lifting plate is mounted on the output shaft of the lifting cylinder and is located above the base plate; A rotating shaft, which is mounted on the lifting plate; A current column, which is hinged to a rotating shaft; in: The first end of the current column is connected to the first end of the substrate via a tension spring, and a contact portion is installed at the last end of the current column.

[0007] Preferably, it also includes a pressure plate; The pressure plate is located above the lifting plate and is connected to the lifting plate via a support column.

[0008] Preferably, the rotating shaft and the current column are both located between the pressure plate and the lifting plate. Preferably, two bases are installed on the lifting plate; The rotating shaft is fixedly installed between the two bases.

[0009] Preferably, a horizontal component is installed at the first end of the current column.

[0010] Preferably, a substrate protrusion is mounted at the first end of the substrate; A current column protrusion is installed at the first end of the current column; The substrate protrusion and the current column protrusion are connected by a tension spring.

[0011] Preferably, all the current columns on the rotating shaft are arranged at equal intervals.

[0012] Preferably, the current column comprises a first current column body and a second current column body connected in sequence; The vertical cross-section of the main body of the first current column is rectangular; The vertical cross-section of the second current column body is a straight strip.

[0013] Preferably, the vertical cross-section of the second current column body gradually narrows from the first end to the last end.

[0014] Preferably, the horizontal member and the substrate protrusion are mounted on the first end of the first current column body; Compared with the prior art, the beneficial effects of this utility model are as follows: The contact part is installed on the top of the tail end of the second current column body. 1) This utility model has low requirements for the consistent installation of the terminal sleeve screw assembly, and the redundancy is relatively large. There is no need to consider whether the screw head protrudes from the end face.

[0015] 2) Each set of tension springs and current columns in this utility model operates independently and is not interfered with by each other. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a high-current loading fixture for an electricity meter according to this utility model; Figure 2 This is a schematic diagram of a current column hinged to a rotating shaft. In the picture: 1-Pressure plate; 2-Current column; 21-First current column body; 22-Second current column body; 23-Contact part; 3-Lifting plate; 4-Tension spring; 41-Base plate protrusion; 42-Current column protrusion; 5-Rotating shaft; 6-Base plate; 7-Lifting cylinder; 8-Base; 9-Horizontal component; 10-Support column. Detailed Implementation

[0018] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] The terminology used in one or more embodiments of this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of this specification. The singular forms “a,” “described,” and “the” as used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0020] It should be understood that although the terms first, second, etc., may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first may also be referred to as second without departing from the scope of one or more embodiments of this specification, and similarly, second may also be referred to as first. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0021] This utility model provides a high-current loading fixture for electricity meters, comprising: The base plate 6 has a lifting cylinder 7 mounted on its top; The lifting plate 3 is mounted on the output shaft of the lifting cylinder 7 and is located above the base plate 6; Rotating shaft 5, which is mounted on lifting plate 3; Current column 2, which is hinged to the rotating shaft 5; in: The first end of the current column 2 is connected to the first end of the substrate 6 via a tension spring 4, and a contact part 23 is installed at the tail end of the current column 2; The contact portion 23 is formed by the upward protrusion of the tail end of the current column 2, and it is used to make contact with the manganese copper of the relay.

[0022] Preferably, it also includes a pressure plate 1; The pressure plate 1 is located above the lifting plate 3, and the pressure plate 1 is connected to the lifting plate 3 through the support column 10.

[0023] Preferably, the rotating shaft 5 and the current column 2 are both located between the pressure plate 1 and the lifting plate 3.

[0024] Preferably, two bases 8 are installed on the lifting plate 3; The rotating shaft 5 is fixedly installed between the two bases 8.

[0025] Preferably, a horizontal component 9 is installed at the first end of the current column 2; When the high current loading fixture of the electricity meter is initially used, the horizontal component 9 remains horizontal. By observing whether the horizontal component 9 is horizontal, it can be determined whether the current column 2 has returned to its initial state. After long-term use, due to the aging of the tension spring 4, the position of the current column 2 when stationary may deviate. The horizontal component 9 can be used to identify the fault in time.

[0026] Preferably, a substrate protrusion 41 is mounted on the first end of the substrate 6; The current column 2 is equipped with a current column protrusion 42 at its first end; The substrate protrusion 41 and the current column protrusion 42 are connected by a tension spring 4; The substrate protrusion 41, the substrate protrusion 41 and the tension spring 4 can be made of materials such as plastic.

[0027] Preferably, all the current columns 2 on the rotating shaft 5 are arranged at equal intervals; These current columns 2 can work independently and will not affect each other.

[0028] Preferably, the current column 2 includes a first current column body 21 and a second current column body 22 connected in sequence; The vertical cross-section of the first current column body 21 is rectangular; The vertical cross-section of the second current column body 22 is a straight bar shape; When stationary, the main body 22 of the second current column is placed on the lifting plate 3.

[0029] Preferably, the vertical cross-section of the second current column body 22 gradually narrows from the first end to the last end; This makes it easy to insert the tail end of the current column 2 into the terminal sleeve.

[0030] Preferably, the horizontal member 9 and the substrate protrusion 41 are mounted on the first end of the first current column body 21; The contact portion 23 is installed on the top of the tail end of the second current column body 22.

[0031] To better illustrate the technical effects of this utility model, the present utility model provides the following specific embodiments to explain the above technical process: Example 1: A high-current loading fixture for an electricity meter, such as... Figure 1 As shown; Action Analysis: The size of the tail end of current column 2 is much smaller than the size of the upper surface of the terminal sleeve and the lower surface of the manganese copper. When the tail end of current column 2 is inserted into the terminal sleeve, it does not contact the manganese copper relay (located at the top of the inner cavity of the terminal sleeve). After current column 2 is in position, the lifting plate 3 moves upward under the thrust of the lifting cylinder 7, and the tension spring 4 is stretched. As the stretching deformation increases, the tension increases. Current column 2 will rotate around the central rotation axis, causing the main body to rotate counterclockwise around the rotation axis 5. Current column 2 will then contact the manganese copper relay. Each current column 2 operates independently and is not interfered with by others.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A high-current loading fixture for an electricity meter, characterized in that, include: The base plate (6) has a lifting cylinder (7) mounted on its top; The lifting plate (3) is mounted on the output shaft of the lifting cylinder (7) and is located above the base plate (6); A rotating shaft (5) is mounted on a lifting plate (3); The current column (2) is hinged to the rotating shaft (5); in: The first end of the current column (2) is connected to the first end of the substrate (6) via a tension spring (4), and a contact part (23) is installed at the tail end of the current column (2).

2. The high-current loading fixture for an electricity meter according to claim 1, characterized in that: It also includes a pressure plate (1); The pressure plate (1) is located above the lifting plate (3), and the pressure plate (1) is connected to the lifting plate (3) through the support column (10).

3. The high-current loading fixture for an electricity meter according to claim 2, characterized in that: The rotating shaft (5) and the current column (2) are both located between the pressure plate (1) and the lifting plate (3).

4. The high-current loading fixture for an electricity meter according to claim 3, characterized in that: Two bases (8) are installed on the lifting plate (3); The rotating shaft (5) is fixedly installed between the two bases (8).

5. The high-current loading fixture for an electricity meter according to claim 4, characterized in that: The substrate (6) has a substrate protrusion (41) mounted at its first end; The current column (2) is equipped with a current column protrusion (42) at its head end; The substrate protrusion (41) and the current column protrusion (42) are connected by a tension spring (4).

6. The high-current loading fixture for an electricity meter according to claim 5, characterized in that: All current columns (2) on the rotating shaft (5) are arranged at equal intervals.

7. The high-current loading fixture for an electricity meter according to claim 6, characterized in that: The current column (2) includes a first current column body (21) and a second current column body (22) connected in sequence; The vertical cross-section of the first current column body (21) is rectangular; The vertical cross-section of the second current column body (22) is a straight bar shape.

8. The high-current loading fixture for an electricity meter according to claim 7, characterized in that: The vertical cross section of the second current column body (22) gradually narrows from the first end to the last end.

9. The high-current loading fixture for an electricity meter according to claim 8, characterized in that: The substrate protrusion (41) is installed at the head end of the first current column body (21); The contact part (23) is installed at the top of the tail end of the second current column body (22).

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