A test tool for an electric energy meter

Abstract

This utility model relates to the field of electricity meter testing technology, and in particular to a testing fixture for electricity meters, including a mounting frame and a drive mechanism. Connecting plates are fixedly connected between the mounting frames. Conveying grooves are formed on both sides of the inner wall of each mounting frame. Multiple drive shafts are fixedly connected to the inner wall of each conveying groove along the conveying direction of the electricity meter circuit board. Multiple connecting shafts are also fixedly connected to the inner wall of each conveying groove along the conveying direction of the electricity meter circuit board. First gears are fixedly connected to the outer walls of both the drive shafts and connecting shafts, and two of the first gears mesh with each other. Compared with traditional belt conveyors, the design of the drive shafts, connecting shafts, first gears, and conveying rollers in this utility model avoids slippage and slack, ensuring stable circuit board conveying speed. The rubber sleeves on the outer walls of the conveying rollers clamp the two sides of the circuit board, preventing it from shaking or shifting during conveying, thus improving the accuracy and stability of the circuit board conveying.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter testing technology, and more specifically, to a testing fixture for electricity meters. Background Technology

[0002] As the core component of an electricity meter, the performance of the circuit board directly affects key indicators such as metering accuracy and communication stability. Therefore, the circuit board testing process is of paramount importance in the production process. As the basic equipment for carrying and transporting circuit boards to complete various tests, the choice of transportation method is crucial.

[0003] Existing conveying methods mainly include belt conveyors and chain conveyors. Belt conveyors transport goods by rotating a belt around a drive wheel and a driven wheel, while chain conveyors transport goods by using a chain connected to sprockets for cyclic transmission. Due to their relatively simple structure, low cost, and ease of installation and maintenance, belt and chain conveyors were widely used in electrical meter circuit board testing fixtures to achieve continuous transport of circuit boards under previous technical conditions and production needs.

[0004] However, the existing belt or chain conveyor systems used in testing circuit boards for electricity meters still have shortcomings in practical use. Belt conveyors are prone to slippage and slack after prolonged operation, leading to unstable circuit board conveying speed. Furthermore, the lack of clamping for the circuit boards allows them to wobble during transport, potentially causing misalignment. Utility Model Content

[0005] This invention proposes a testing fixture for electricity meters that can prevent circuit boards from shaking or shifting during transportation, thereby improving the accuracy and stability of circuit board transportation.

[0006] The present invention proposes the following technical solution: a testing fixture for an electricity meter, comprising a mounting frame and a drive mechanism;

[0007] A connecting plate is fixedly connected between the mounting brackets. Conveying grooves are opened on both sides of the inner wall of the mounting brackets. Multiple drive shafts are fixedly connected to the inner wall of the conveying grooves along the conveying direction of the power meter circuit board. Multiple connecting shafts are fixedly connected to the inner wall of the conveying grooves along the conveying direction of the power meter circuit board. A first gear is fixedly connected to the outer wall of the drive shaft and the connecting shaft. Two first gears mesh with each other. Conveying rollers are fixedly connected to the outer wall of the drive shaft and the connecting shaft. A rubber sleeve is fitted on the outer wall of the conveying roller. The two conveying rollers clamp the two sides of the power meter circuit board through the rubber sleeves.

[0008] The drive mechanism is used to drive multiple drive shafts to rotate.

[0009] Preferably, a bracket is fixedly connected to the top of the mounting frame, a probe plate is provided below the bracket, and guide rods are fixedly connected to the four corners of the top of the probe plate. The tops of the guide rods all pass through the bracket and are slidably connected to it.

[0010] Preferably, hydraulic rods are fixedly connected to both the connecting plate and the outer wall of the bracket. The output end of the upper hydraulic rod passes through the bracket and extends to its lower part, and the output end of the hydraulic rod is fixedly connected to the top of the probe plate.

[0011] Preferably, a support plate is provided above the connecting plate, and the output end of the hydraulic rod located below passes through the connecting plate and extends above it. The output end of the hydraulic rod is fixedly connected to the support plate, and a test through slot is provided on the support plate that corresponds one-to-one with the test points of the circuit board.

[0012] Preferably, the inner wall of the mounting bracket is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a mounting sleeve, the outer wall of the mounting sleeve is fixedly connected to a baffle, the end of the rotating shaft passes through the mounting bracket and extends to the outside, and the outer end of the rotating shaft is fixedly connected to a second gear.

[0013] Preferably, a cylinder is fixedly connected to the outer wall of the mounting bracket, a fixing plate is fixedly connected to the end of the cylinder, a toothed plate is fixedly connected to the top of the fixing plate, and the toothed plate meshes with a second gear.

[0014] Preferably, a slide rod is slidably connected to the inner wall of the fixing plate, and a support block is fixedly connected to both ends of the slide rod. The end of the support block is fixedly connected to the outer wall of the mounting frame.

[0015] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0016] 1. The design of the drive shaft, connecting shaft, first gear and conveyor roller in the conveying trough avoids slippage and slack compared with traditional belt conveying, ensuring stable circuit board conveying speed; the rubber sleeve on the outer wall of the conveyor roller clamps the two sides of the circuit board to prevent the circuit board from shaking or shifting during the conveying process, thus improving the accuracy and stability of circuit board conveying.

[0017] 2. The rotation of the shaft can drive the baffle to rotate, thereby opening and closing the output channel of the circuit board. This facilitates the control of the circuit board's conveying rhythm, ensuring that the circuit boards are output in an orderly manner after testing, and preventing the circuit boards from piling up. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the installation structure of the conveyor roller of this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation structure of the baffle of this utility model.

[0022] In the diagram: 1. Mounting bracket; 2. Connecting plate; 3. Conveying trough; 4. Drive shaft; 5. Connecting shaft; 6. First gear; 7. Conveying roller; 8. Drive mechanism; 9. Bracket; 10. Hydraulic rod; 11. Guide rod; 12. Probe plate; 13. Bearing plate; 14. Cylinder; 15. Fixing plate; 16. Slide rod; 17. Support block; 18. Toothed plate; 19. Rotating shaft; 20. Mounting sleeve; 21. Baffle; 22. Second gear. Detailed Implementation

[0023] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figure 1 and Figure 2 As shown, a test fixture for an electricity meter includes a mounting bracket 1 and a drive mechanism 8.

[0025] A connecting plate 2 is fixedly connected between the mounting brackets 1. A conveying groove 3 is opened on both sides of the inner wall of the mounting bracket 1. Multiple drive shafts 4 are fixedly connected to the inner wall of the conveying groove 3 along the conveying direction of the power meter circuit board. Multiple connecting shafts 5 are fixedly connected to the inner wall of the conveying groove 3 along the conveying direction of the power meter circuit board. A first gear 6 is fixedly connected to the outer wall of both the drive shaft 4 and the connecting shaft 5. The two first gears 6 mesh with each other. A conveying roller 7 is fixedly connected to the outer wall of both the drive shaft 4 and the connecting shaft 5. A rubber sleeve is fitted on the outer wall of the conveying roller 7. The two conveying rollers 7 clamp the two sides of the power meter circuit board through the rubber sleeve.

[0026] The drive mechanism 8 is used to drive multiple drive shafts 4 to rotate. The drive mechanism is driven by a motor, which drives multiple sprockets fixed on the drive shafts 4 to rotate via a chain, thereby causing the multiple drive shafts 4 to rotate.

[0027] The design of the drive shaft 4, connecting shaft 5, first gear 6 and conveyor roller 7 in the conveying trough 3 avoids slippage and slack compared with traditional belt conveying, ensuring stable circuit board conveying speed. The rubber sleeve on the outer wall of the conveyor roller 7 clamps the two sides of the circuit board to prevent the circuit board from shaking or shifting during the conveying process, thus improving the accuracy and stability of the circuit board conveying.

[0028] In this embodiment, as Figure 3 As shown, a bracket 9 is fixedly connected to the top of the mounting bracket 1. A probe plate 12 is provided below the bracket 9. Guide rods 11 are fixedly connected to the four corners of the top of the probe plate 12. The top of the guide rods 11 passes through the bracket 9 and is slidably connected to it. A probe is installed at the bottom of the probe plate 12. The probe contacts the circuit board. The probe is usually spring-mounted. The spring pressure compresses the probe to elastically connect with the contacts on the circuit board under test, so as to realize the power supply of the circuit board and perform various electrical performance tests on the circuit board.

[0029] Hydraulic rods 10 are fixedly connected to the outer walls of both the connecting plate 2 and the bracket 9. The output end of the upper hydraulic rod 10 passes through the bracket 9 and extends to its lower part. The output end of the hydraulic rod 10 is fixedly connected to the top of the probe plate 12.

[0030] A support plate 13 is provided above the connecting plate 2. The support plate 13 is used to support the circuit board to be tested. The output end of the hydraulic rod 10 located below passes through the connecting plate 2 and extends above it. The output end of the hydraulic rod 10 is fixedly connected to the support plate 13. The support plate 13 has test slots that correspond one-to-one with the test points of the circuit board.

[0031] The square hydraulic rod 10 can drive the probe plate 12 to move up and down, so as to realize the contact and separation of the probe with the test point of the circuit board; the lower hydraulic rod 10 can drive the support plate 13 to move up and down, so as to complete the test operation.

[0032] In this embodiment, as Figure 4 As shown, a rotating shaft 19 is rotatably connected to the inner wall of the mounting bracket 1, a mounting sleeve 20 is fixedly connected to the outer wall of the rotating shaft 19, a baffle 21 is fixedly connected to the outer wall of the mounting sleeve 20, the end of the rotating shaft 19 passes through the mounting bracket 1 and extends to the outside, and a second gear 22 is fixedly connected to the outer end of the rotating shaft 19.

[0033] A cylinder 14 is fixedly connected to the outer wall of the mounting bracket 1. A fixing plate 15 is fixedly connected to the end of the cylinder 14. A toothed plate 18 is fixedly connected to the top of the fixing plate 15. The toothed plate 18 meshes with the second gear 22.

[0034] A slide rod 16 is slidably connected to the inner wall of the fixed plate 15. Both ends of the slide rod 16 are fixedly connected to a support block 17, and the end of the support block 17 is fixedly connected to the outer wall of the mounting frame 1.

[0035] The rotation of the shaft 19 can drive the baffle 21 to rotate, thereby opening and closing the output channel of the circuit board. This facilitates the control of the circuit board's delivery rhythm, ensuring that the circuit boards are output in an orderly manner after testing, and preventing the circuit boards from piling up.

[0036] Working principle: When the drive mechanism 8 is activated, it drives the drive shaft 4 to rotate. The first gear 6 on the drive shaft 4 meshes with the first gear 6 on the connecting shaft 5, thereby causing the connecting shaft 5 to rotate synchronously. When the drive shaft 4 and the connecting shaft 5 rotate, they drive the conveying roller 7 on the outer wall to rotate. The conveying roller 7 clamps and conveys the circuit board of the electricity meter through the rubber sleeve. Under the drive of the conveying roller 7, the circuit board moves smoothly forward along the conveying groove 3.

[0037] When cylinder 14 is activated, it pushes the fixed plate 15 to move. The toothed plate 18 on the fixed plate 15 meshes with the second gear 22, which drives the rotating shaft 19 to rotate, thereby causing the mounting sleeve 20 and the baffle 21 to rotate. The baffle 21 blocks the circuit board, and at the same time, the drive mechanism 8 stops.

[0038] At this time, the circuit board is transported to the test position, the upper hydraulic rod 10 is activated, and its output end pushes the probe plate 12 to move downward along the guide rod 11, so that the probe on the probe plate 12 contacts the test point of the circuit board; at the same time, the lower hydraulic rod 10 is activated, and its output end pushes the carrier plate 13 to rise, and the test slot on the carrier plate 13 corresponds to the test point of the circuit board, thus completing the test operation.

[0039] After the test is completed, cylinder 14 is activated, pushing the fixed plate 15 to move. The toothed plate 18 on the fixed plate 15 meshes with the second gear 22, driving the rotating shaft 19 to rotate in the opposite direction. The circuit board continues to be conveyed forward and leaves the test fixture.

[0040] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A testing fixture for an electricity meter, characterized in that, include: Mounting bracket (1), with connecting plates (2) fixedly connected between the mounting brackets (1), conveying grooves (3) are provided on both sides of the inner wall of the mounting bracket (1), multiple drive shafts (4) are fixedly connected to the inner wall of the conveying groove (3) along the conveying direction of the power meter circuit board, multiple connecting shafts (5) are fixedly connected to the inner wall of the conveying groove (3) along the conveying direction of the power meter circuit board, first gears (6) are fixedly connected to the outer walls of the drive shafts (4) and connecting shafts (5), two first gears (6) mesh with each other, conveying rollers (7) are fixedly connected to the outer walls of the drive shafts (4) and connecting shafts (5), rubber sleeves are provided on the outer walls of the conveying rollers (7), and the two conveying rollers (7) clamp the two sides of the power meter circuit board respectively through the rubber sleeves; A drive mechanism (8) is used to drive multiple drive shafts (4) to rotate.

2. The testing fixture for an electricity meter according to claim 1, characterized in that: The mounting bracket (1) is fixedly connected to the top of the bracket (9), and a probe plate (12) is provided below the bracket (9). Guide rods (11) are fixedly connected to the four corners of the top of the probe plate (12), and the top of the guide rods (11) passes through the bracket (9) and is slidably connected to it.

3. The testing fixture for an electricity meter according to claim 2, characterized in that: Hydraulic rods (10) are fixedly connected to the outer walls of the connecting plate (2) and the bracket (9). The output end of the hydraulic rod (10) located above passes through the bracket (9) and extends to its lower part. The output end of the hydraulic rod (10) is fixedly connected to the top of the probe plate (12).

4. The testing fixture for an electricity meter according to claim 3, characterized in that: The connecting plate (2) is provided with a bearing plate (13) above it, and the output end of the hydraulic rod (10) located below it passes through the connecting plate (2) and extends above it. The output end of the hydraulic rod (10) is fixedly connected to the bearing plate (13). The bearing plate (13) is provided with test slots that correspond one-to-one with the test points of the circuit board.

5. The testing fixture for an electricity meter according to claim 4, characterized in that: The inner wall of the mounting bracket (1) is rotatably connected to a rotating shaft (19), the outer wall of the rotating shaft (19) is fixedly connected to a mounting sleeve (20), the outer wall of the mounting sleeve (20) is fixedly connected to a baffle (21), the end of the rotating shaft (19) passes through the mounting bracket (1) and extends to the outside, and the outer end of the rotating shaft (19) is fixedly connected to a second gear (22).

6. The testing fixture for an electricity meter according to claim 5, characterized in that: A cylinder (14) is fixedly connected to the outer wall of the mounting bracket (1), a fixing plate (15) is fixedly connected to the end of the cylinder (14), a toothed plate (18) is fixedly connected to the top of the fixing plate (15), and the toothed plate (18) meshes with the second gear (22).

7. The testing fixture for an electricity meter according to claim 6, characterized in that: The inner wall of the fixing plate (15) is slidably connected to a slide rod (16), and both ends of the slide rod (16) are fixedly connected to a support block (17). The end of the support block (17) is fixedly connected to the outer wall of the mounting frame (1).

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