Portable test tool

Abstract

A portable testing tool comprises a bottom plate, a plurality of supporting rods are arranged on the bottom plate, and testing spaces are formed among the supporting rods; the top plate is fixedly arranged at the top end of the supporting rod, a plurality of test probes are arranged on the top plate, and a wiring terminal used for being detachably connected with a calibrating device is further arranged on the top plate; the middle plate is arranged between the bottom plate and the top plate and can slide up and down along the supporting rods, a testing position is arranged on the middle plate, a positioning mechanism is arranged at the testing position, and a limiting mechanism used for limiting the height of the middle plate is arranged on the supporting rods. The middle plate capable of moving up and down is arranged, the to-be-tested electric energy meter is placed on the middle plate, the to-be-tested electric energy meter is in contact with the probe through movement of the middle plate, then verification is completed, the height of the middle plate is adjustable, verification requirements of the electric energy meters with different heights can be met, the design of the wiring terminals can achieve rapid replacement of the test tool, and the test efficiency is improved. Therefore, the calibration requirements of electric energy meters with different terminal distances can be met.

Description

Technical Field

[0001] The utility model specifically relates to a portable test tooling. Background Art

[0002] The rail-type DC watt-hour meter calibration device belongs to testing equipment and is mainly used for watt-hour meter calibration. Since the designed outer shells and terminal spacings of different manufacturers are different, a large number of power lines and signal lines have to be led out. When performing calibration, engineers need to connect the power lines and signal lines to the product to be tested one by one, which takes a long time for engineers to wire. Moreover, when switching products, wiring needs to be done again, which is rather cumbersome. Therefore, a tooling is needed to adapt to different models of watt-hour meters to be tested. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a portable test tooling.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A portable test tooling, which comprises:

[0006] A bottom plate, on which a plurality of support rods are provided, and a test space is formed between the support rods;

[0007] A top plate, fixedly arranged at the top ends of the support rods, and a plurality of test probes are provided on the top plate, and a wiring terminal for detachably connecting with a calibration device is further provided on the top plate;

[0008] A middle plate, arranged between the bottom plate and the top plate, and can slide up and down along the support rods, and a test position is provided on the middle plate, and a positioning mechanism is provided at the test position,

[0009] A limiting mechanism for limiting the height of the middle plate is provided on the support rods.

[0010] The support rods include linear guide rails that form a sliding fit with the middle plate and threaded rods provided with limiting mechanisms.

[0011] The limiting mechanism is a butterfly nut that forms a threaded fit with the support rods.

[0012] The middle plate is provided with a special-shaped opening adapted to the butterfly nut, and the butterfly nut has a vertical state that can pass through the special-shaped opening and a horizontal state that forms a limiting fit with the special-shaped opening.

[0013] Position-adjustable limiting studs are provided at the upper and lower ends of the butterfly nut.

[0014] The distance between the upper and lower limit studs only allows the wing nut to switch from the horizontal state to the vertical state.

[0015] The positioning mechanism is a detachable positioning plate.

[0016] A number of vertical holes are provided on the middle plate along the length direction of the middle plate, and a number of horizontal holes are correspondingly provided on the positioning plate along the width direction of the middle plate.

[0017] The top plate is composed of a first top plate and a second top plate stacked on each other. An isolation column is provided between the two. The probe is located at the lower end of the second top plate and sequentially passes through the second top plate and the first top plate to be electrically connected to the terminal block.

[0018] The terminal block is arranged on a wiring board, and the wiring board is fixedly arranged above the top plate. The terminal block is electrically connected to the probe through a wire.

[0019] The beneficial effects of the present utility model: In this application, by providing a middle plate that can move up and down, the electricity meter to be tested is placed on the middle plate. The movement of the middle plate makes the electricity meter to be tested contact the probe, thereby completing the verification operation. At the same time, since the height of the middle plate is adjustable, it can adapt to the verification requirements of electricity meters with different heights. At the same time, the design of the terminal block can realize the rapid replacement of the test tooling to adapt to the verification requirements of electricity meters with different terminal spacings. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present utility model (the wiring board is omitted).

[0021] Figure 2 It is a side view of the present utility model.

[0022] Figure 3 It is a front view of the present utility model.

[0023] Figure 4 It is a schematic diagram of the middle plate and the positioning plate of the present utility model. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] like Figure 1 As shown, the utility model discloses a portable testing tool, which is mainly used to fix the electric energy meter to be tested and enable it to be quickly connected to the rail-type DC electric energy meter calibration device, without the need to connect to the electric energy meter to be tested one by one, thereby realizing batch detection.

[0027] The portable test device includes a bottom plate 1 and a top plate 2, which are fixed to form a frame structure by support rods, and the space between the two serves as a test space. A middle plate 3 with a test surface is provided between the two. The middle plate can move up and down, so that the electric energy meter to be tested thereon can contact the probe of the top plate during the rising process, thereby completing the calibration operation.

[0028] A bottom plate is provided with a plurality of support rods, and a test space is provided between the support rods. The support rods are divided into two rows and arranged at both ends of the bottom plate, and the distance between the support rods is preferably to meet the size of the electric energy meter to be placed, so that the electric energy meter to be tested will not be restricted when it is installed. At the same time, the support rods are fixedly connected to the bottom plate, so that the position of the support rods relative to the bottom plate will not change.

[0029] A top plate is fixedly arranged on the top of the support rod, and a plurality of test probes are arranged on the top plate. The top plate is also provided with wiring terminals for detachable connection with the calibration device. The test probes are arranged toward the bottom plate, so that the electric energy meter to be tested on the middle plate can be contacted by the test probes, thereby completing the calibration operation. The number of probes is determined according to the number of terminals of the electric energy meter to be tested.

[0030] At the same time, there are easy-to-install wiring terminals on the top, which can be quickly connected and disassembled by directly plugging and unplugging matching terminals. When calibrating electric energy meters of different specifications, the test tooling can be quickly disassembled and replaced.

[0031] The middle plate is arranged between the bottom plate and the top plate, and can slide up and down along the support rod. A test position is provided on the middle plate, and a positioning mechanism is provided at the test position. The relatively slidable design of the middle plate can realize the installation and testing of the electric energy meter to be tested, and the position of the middle plate can also be adjusted according to the electric energy meters of different heights, so that it can meet the calibration requirements of electric energy meters of different heights.

[0032] The support rod is provided with a limiting mechanism for limiting the height of the middle plate, and the limiting mechanism is used to limit the position of the electric energy meter to be tested so that it switches from the installation state to the test state.

[0033] As shown in Figure 2 and Figure 3 shown, the support rod includes a linear guide rail 5 that forms a sliding fit with the middle plate and a threaded rod 4 provided with a limiting mechanism. The threaded rod is located in the middle of the linear guide rails on both sides, and it is used to adjust the position of the middle plate. A linear bearing 52 that forms a sliding fit with the linear guide rail is also provided on the middle plate, thereby making the movement of the middle plate smoother.

[0034] As shown in Figure 4 shown, the limiting mechanism 92 is a wing nut that forms a threaded fit with the support rod. A special-shaped opening adapted to the wing nut is provided on the middle plate. The wing nut has a vertical state that can pass through the special-shaped opening and a horizontal state that forms a limiting fit with the special-shaped opening. By rotating the wing nut relatively, the position of the middle plate is limited. That is, in the horizontal state, the middle plate can move upward relatively, and the wing nut can pass through the special-shaped opening. Then, the middle plate is moved above the wing nut, and then the wing nut is rotated to limit the middle plate from moving downward, thereby completing the installation and fixation of the product to be tested.

[0035] Position-limiting studs 91 for position adjustment are provided at the upper and lower ends of the wing nut. The position-limiting studs are used to limit the position of the wing nut. Therefore, after one adjustment, it can meet the batch verification use of the same type of electricity meter without additional adjustment each time.

[0036] Fix the upper position-limiting stud and the lower position-limiting stud at specific positions on the threaded rod (M4 lead screw) (determined by the height of the product). When the M4 wing nut is rotated 90 degrees clockwise to the vertical position, the lower position-limiting stud just squeezes the M4 wing nut, and at this time, the M4 wing nut cannot be rotated clockwise anymore; when the M4 wing nut is rotated 90 degrees counterclockwise to the horizontal position, the upper position-limiting stud just squeezes the M4 wing nut, and at this time, the M4 wing nut cannot be rotated counterclockwise anymore.

[0037] The distance between the upper and lower position-limiting studs can only meet the switching of the wing nut from the horizontal state to the vertical state. It limits the wing nut to rotate 90 degrees only counterclockwise or clockwise, restricts the distance of its up and down movement, ensures that the product to be tested is always in the normal test position, and avoids errors that may occur due to inconsistent rotation directions during each use, thereby affecting the test effect.

[0038] Taking 90 degrees as an example for the specific distance between the upper and lower position-limiting studs, that is, the distance between the two position-limiting studs is set to 90 / 360 * the pitch of the selected lead screw. Just take the states of the wing nut at the two end points as the horizontal or vertical states, that is, the vertical state when it is located at the lower side and the horizontal state when it is located at the upper side.

[0039] As shown in Figure 4As shown, the positioning mechanism is a detachable positioning plate 7. The detachable positioning plate design can meet the positioning requirements of watt-hour meters of different sizes. The positioning plate is in a concave shape and has two positioning plates 72, and the distance between the two positioning plates is adapted to the size of the watt-hour meter.

[0040] A number of vertical holes 31 are provided on the middle plate along the length direction Y of the middle plate. Corresponding to these, a number of horizontal holes 71 are provided on the positioning plate along the width direction X of the middle plate. The positioning plate is fixed to the middle plate with lock nuts and disc nuts. The positioning plate has horizontal openings and the middle plate has vertical openings, which can realize fine adjustment of the positioning plate in the length and width directions of the middle plate where the middle plate is located, enabling the product to be more accurately docked with the probe 6.

[0041] The top plate is composed of a first top plate 21 and a second top plate 22 stacked on each other. An isolation column 51 is provided between them. The isolation column is directly formed by the threaded part at the upper end of the linear guide rail. The first top plate and the second top plate are both locked to the upper end of the linear guide rail by nuts, and a gap is formed between them. The probe is located at the lower end of the second top plate and sequentially passes through the second top plate and the first top plate to be electrically connected to the terminal block.

[0042] The setting of the isolation column makes there be a certain interval between the two top plates, which can make the probe fixed more stably and is not easily bent and deformed by the upward impact force of the product to be measured.

[0043] The terminal block 8 is arranged on the wiring board 81, and the wiring board is fixedly arranged above the top plate. The terminal block is electrically connected to the probe through a wire. The design of using the wiring board makes the fixation of the terminal block to the top plate more reliable, and the design that the wiring board extends out of the top plate makes wiring more convenient.

[0044] The embodiments should not be regarded as a limitation to the present utility model, but any improvement based on the spirit of the present utility model should be within the protection scope of the present utility model.

Claims

1. A portable testing tool, characterized in that: It includes: A bottom plate, wherein a plurality of support rods are disposed on the bottom plate, and test spaces are provided between the support rods; A top plate, fixedly arranged on the top of the support rod, and provided with a plurality of test probes, and also provided with a wiring terminal for detachably connecting with a calibration device; The middle plate is arranged between the bottom plate and the top plate, and can slide up and down along the support rod, and a test position is arranged on the middle plate, and a positioning mechanism is arranged at the test position, The support rod is provided with a limiting mechanism for limiting the height of the middle plate.

2. The portable testing tool according to claim 1, characterized in that: The support rod comprises a linear guide rail which is in sliding cooperation with the middle plate and a threaded rod which is provided with a limiting mechanism.

3. The portable testing tool according to claim 1 or 2, characterized in that: The limiting mechanism is a butterfly nut threadably matched with the support rod.

4. The portable testing tool according to claim 3, characterized in that: The middle plate is provided with a special-shaped opening matched with the butterfly nut, and the butterfly nut has a vertical state that can pass through the special-shaped opening and a horizontal state that forms a limit fit with the special-shaped opening.

5. The portable testing tool according to claim 3, characterized in that: The upper and lower ends of the butterfly nut are provided with position-adjustable limit screws.

6. The portable testing tool according to claim 3, characterized in that: The distance between the upper and lower limiting studs can only satisfy the switching of the butterfly nut from the horizontal state to the vertical state.

7. The portable testing tool according to claim 1, characterized in that: The positioning mechanism is a detachable positioning plate.

8. The portable testing tool according to claim 7, characterized in that: The middle plate is provided with a plurality of vertical holes arranged along the length direction of the middle plate, and the positioning plate is correspondingly provided with a plurality of transverse holes arranged along the width direction of the middle plate.

9. The portable testing tool according to claim 1, characterized in that: The top plates are stacked with a first top plate and a second top plate, with an isolation column arranged between the two. The probe is located at the lower end of the second top plate, and passes through the second top plate and the first top plate in sequence to be electrically connected to the connection terminal.

10. The portable testing tool according to claim 1 or 9, characterized in that: The connection terminal is arranged on a connection board, and the connection board is fixedly arranged above the top plate, and the connection terminal is electrically connected to the probe through a wire.

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