CN218974578U

CN218974578U - Ammeter testing arrangement

Info

Publication number: CN218974578U
Application number: CN202320114043.7U
Authority: CN
Inventors: 戴志平; 谢中银
Original assignee: Chint Intelligent Manufacturing Equipment Shenzhen Co ltd
Current assignee: Chint Intelligent Manufacturing Equipment Shenzhen Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-05-05
Anticipated expiration: 2033-01-17

Abstract

The utility model belongs to the technical field of electric power, and discloses an ammeter testing device. The ammeter testing device comprises a first positioning jig, a probe base, a first driving assembly, a second positioning jig and a clamping mechanism, wherein the first positioning jig comprises two parallel guide rails, the distance between the two guide rails can be adjusted, and an ammeter can be accommodated between the two guide rails and positioned in a first direction (Y); the probe base is arranged at one end of the guide rail; the first driving assembly can push the ammeter to move towards the probe base in a second direction and enable the ammeter to be in contact with the probe base; the second positioning jig is arranged on one side of the first positioning jig and comprises a plurality of clamping grooves, and the clamping grooves are internally provided with electricity purchasing cards; the clamping mechanism is configured to clamp the electricity purchasing card in the clamping groove and insert the electricity purchasing card into the ammeter; the first direction (Y) is perpendicular to the second direction. The ammeter testing device provided by the utility model has strong compatibility, and reduces the testing time of ammeter with different sizes.

Description

Ammeter testing arrangement

Technical Field

The utility model relates to the technical field of electric power, in particular to an ammeter testing device.

Background

In the existing ammeter test structure, an ammeter is usually fixed by using a special fixture, and a probe base is pushed to be abutted against the ammeter by using an air cylinder to complete a test action. In the existing automatic ammeter test line, only one type of ammeter can be tested, the compatibility of the automatic test line is poor, if the type of the ammeter is replaced, complex type replacing operation is needed to be carried out on the test line, and the test time of the ammeter is prolonged.

Disclosure of Invention

The utility model aims to provide an ammeter testing device, which aims to improve the compatibility of the ammeter testing device, reduce the change frequency and reduce the debugging time.

To achieve the purpose, the utility model adopts the following technical scheme:

an ammeter testing device comprising:

the first positioning jig comprises two parallel guide rails, the distance between the two guide rails can be adjusted, and the electric meter can be accommodated between the two guide rails and positioned in a first direction (Y);

the probe base is arranged at one end of the guide rail and is used for being electrically connected with the ammeter;

the second driving assembly is arranged at the other end of the guide rail, and can push the ammeter to move towards the probe base in a second direction (X) and enable the ammeter to be in contact with the probe base;

the second positioning jig is arranged on one side of the first positioning jig and comprises a plurality of clamping grooves, and the clamping grooves are internally provided with electricity purchasing cards;

the clamping mechanism is configured to clamp and take out the electricity purchasing card in the clamping groove and insert the electricity purchasing card into the ammeter;

the first direction (Y) is perpendicular to the second direction (X).

Optionally, the first positioning fixture further comprises a first driving assembly, and the first driving assembly is used for pushing the ammeter to slide away from the probe base along the second direction (X).

Optionally, the first driving assembly comprises a first cylinder and a push rod arranged at the output end of the first cylinder, and the push rod is arranged between the ammeter and the probe base;

the second driving assembly comprises a second air cylinder and a pushing block arranged at the output end of the second air cylinder, and the pushing block can be in contact with the ammeter.

Optionally, the first positioning fixture further comprises a third driving assembly, and the third driving assembly is configured to drive one guide rail to move in a direction away from or close to the other guide rail.

Optionally, the third driving assembly includes a moving module and a Z-shaped pulling plate disposed on the moving module, one end of the Z-shaped pulling plate is connected with an output end of the moving module, and the other end of the Z-shaped pulling plate is connected with one side surface of the guide rail.

Optionally, the clamping mechanism includes:

the clamping jaw assembly is used for clamping the electricity purchasing card;

a vertical drive, driving the jaw assembly to move in a third direction (Z) perpendicular to a plane formed by the first direction (Y) and the second direction (X);

and the transverse driving is in driving connection with the vertical driving to move along the first direction (Y), so that the vertical driving drives the clamping jaw assembly to move to the upper part of the ammeter.

Optionally, vertical drive includes presses cylinder, cylinder block and presses the slide, press the cylinder block locate in the cylinder block, press slide sliding connection in the cylinder block, just press the slide with press the output of cylinder and be connected, the clamping jaw subassembly is located press on the slide.

Optionally, the clamping jaw assembly includes clamping jaw cylinder and two clamping jaws of locating the output of clamping jaw cylinder, clamping jaw cylinder can drive two clamping jaws and be close to or keep away from, clamping jaw cylinder with press the slide and be connected.

Optionally, press the slide with the clamping jaw cylinder passes through the connecting seat and connects, press the slide with be equipped with the elastic component between the connecting seat, just the connecting seat with press slide sliding connection.

Optionally, the clamping mechanism further comprises a pressure sensor, and the pressure sensor is arranged between the elastic piece and the connecting seat.

Optionally, the ammeter testing device further comprises a photoelectric sensor, wherein the photoelectric sensor is arranged on the probe base and is used for sensing the position of the ammeter.

The utility model has the beneficial effects that: according to the ammeter test device, the first positioning jig is arranged, the ammeter is firstly accommodated between the two guide rails in a test mode, the second driving assembly pushes the ammeter to move towards the probe base to enable the ammeter to be in contact with the probe base so as to conduct electrifying test on the ammeter, when the ammeter with different sizes needs to be tested, the distance between the two guide rails is only required to be adjusted to enable the distance to be matched with the size of the ammeter, the testing of the ammeter with different types and similar sizes can be completed on the same ammeter test device, compatibility of the ammeter test device is improved, testing time of the ammeter with different sizes is shortened, the transformation frequency of the ammeter test device is reduced, and the transformation debugging time is shortened.

Drawings

FIG. 1 is a schematic diagram of an ammeter test device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a first positioning fixture and a second positioning fixture according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a second driving assembly according to an embodiment of the present utility model.

In the figure:

100. a first positioning jig; 110. a guide rail; 200. an electricity meter; 300. a probe base; 400. a first drive assembly; 410. a first cylinder; 420. a pushing block; 500. a second positioning jig; 510. a bracket; 520. a positioning seat; 600. purchasing an electricity card; 700. a clamping mechanism; 710. a jaw assembly; 711. a clamping jaw cylinder; 712. a clamping jaw; 720. driving vertically; 721. a cylinder block; 722. pressing the sliding plate; 7221. a bump; 730. driving transversely; 740. a connecting seat; 750. an elastic member; 760. a pressure sensor; 770. a fixing seat; 800. a second drive assembly; 810. a second cylinder; 820. a push rod; 900. a third drive assembly; 910. a mobile module; 920. z-shaped pulling plates; 1000. a photoelectric sensor; 1100. a support base; 1110. and (5) pushing the hole in a long strip shape.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides an ammeter testing device, and this ammeter testing device can be used for the power-on test of the different types ammeter that the size is close, and this ammeter testing dress displacement type time is short, need not manual regulation, and the compatibility is wide.

Specifically, as shown in fig. 1 to 3, the electricity meter testing device includes a first positioning jig 100, a probe base 300, a first driving assembly 400, a second positioning jig 500, and a clamping mechanism 700, wherein the first positioning jig 100 includes two parallel guide rails 110, a distance between the two guide rails 110 can be adjusted, and the electricity meter 200 can be accommodated between the two guide rails 110 and positioned in a first direction (Y); the probe base 300 is arranged at one end of the guide rail 110, and the probe base 300 is used for being electrically connected with the ammeter 200; the first driving assembly 400 is disposed at the other end of the guide rail 110, and the first driving assembly 400 can push the electricity meter 200 to move toward the probe base 300 in the second direction (X) and bring the electricity meter 200 into contact with the probe base 300; the second positioning jig 500 is arranged at one side of the first positioning jig 100, the second positioning jig 500 comprises a plurality of clamping grooves, and the clamping grooves are internally provided with electricity purchasing cards 600; the holding mechanism 700 is configured to be capable of gripping the electricity purchasing card 600 in the card slot and inserting the electricity purchasing card 600 into the electricity meter 200; the first direction (Y) is perpendicular to the second direction (X).

According to the ammeter test device provided by the utility model, the first positioning jig 100 is arranged, the first positioning jig 100 comprises two parallel guide rails 110, when in test, the ammeter 200 is firstly accommodated between the two guide rails 110, the first driving assembly 400 pushes the ammeter 200 to move towards the probe base 300 so as to enable the ammeter 200 to be in contact with the probe base 300, so that the ammeter 200 is electrified to be tested, when the ammeter 200 with different sizes needs to be tested, the distance between the two guide rails 110 is only required to be adjusted, so that the distance is matched with the size of the ammeter 200, and the tests of the ammeter 200 with different types and similar sizes can be completed on the same ammeter test device, so that the compatibility of the ammeter test device is improved, the transformation frequency of the ammeter test device is reduced, the transformation debugging time is shortened, and the test time of the ammeter 200 with different sizes is further reduced.

Optionally, the meter testing device further includes a second driving assembly 800, where the second driving assembly 800 is configured to push the meter 200 to slide away from the probe base 300 along the second direction (X). Before testing, the electric meter 200 is placed between the two guide rails 110, then the first driving assembly 400 pushes the electric meter 200 to slide in the direction close to the probe base 300 until the electric meter 200 is pushed into the probe base 300, the probe base 300 is electrified to perform first three-second power-on test on the electric meter 200, after the test is completed, the second driving assembly 800 pushes the electric meter 200 to move to the original position along the two guide rails 110, and the second driving assembly 800 and the first driving assembly 400 are arranged, so that the convenience of position adjustment of the electric meter 200 is improved.

Specifically, the second driving assembly 800 includes a second cylinder 810 and a push rod 820 provided at an output end of the second cylinder 810, the push rod 820 being interposed between the electricity meter 200 and the probe base 300; the first driving assembly 400 includes a first cylinder 410 and a push block 420 provided at an output end of the first cylinder 410, and the push block 420 can be in contact with the electricity meter 200. After the electric meter 200 is placed on the first positioning jig 100, the first cylinder 410 drives the push block 420 to move, and the push block 420 pushes the electric meter 200 to approach until the electric meter 200 is abutted to the probe base 300, so that the electric meter 200 is accurately abutted to the probe base 300; after the test is completed, the second cylinder 810 is started, the second cylinder 810 drives the push rod 820 to move, and the push rod 820 pushes the ammeter 200 to be far away from the probe base 300 and returns to the original position, so that the degree of automation is improved, and the test efficiency is further improved.

In this embodiment, the electricity meter testing device further includes a supporting seat 1100, the supporting seat 1100 is provided with an elongated pushing hole 1110, the extending direction of the elongated pushing hole 1110 is the same as the sliding direction of the electricity meter 200, the first cylinder 410 is located below the supporting seat 1100, the electricity meter 200 is disposed on the supporting seat 1100, and the pushing block 420 is slidably disposed through the elongated pushing hole 1110. After the first cylinder 410 is started, the first cylinder 410 drives the push block 420 to move along the long strip-shaped push hole 1110, so that the ammeter 200 on the supporting seat 1100 is pushed to slide along the two guide rails 110, and the sliding stability of the ammeter 200 is improved.

Optionally, the electric meter testing device further includes a third driving assembly 900, where the third driving assembly 900 is configured to drive one of the guide rails 110 to move away from or close to the other guide rail 110, and when testing, the third driving assembly 900 is turned on to drive one of the guide rails 110 to close to or away from the other guide rail 110, so that the distance between the two guide rails 110 matches with the size of the electric meter 200, and the limit stability of the electric meter 200 is improved.

Further, the third driving assembly 900 includes a moving module 910 and a Z-shaped pulling plate 920 disposed on the moving module 910, wherein one end of the Z-shaped pulling plate 920 is connected to the output end of the moving module 910, and the other end of the Z-shaped pulling plate 920 is connected to a side of one of the guide rails 110. When the distance between the two guide rails 110 needs to be adjusted, the moving module 910 drives the Z-shaped pulling plate 920 to move, and the Z-shaped pulling plate 920 pulls one guide rail 110 away from or close to the other guide rail 110, so that the distance between the two guide rails 110 can be adjusted conveniently. Illustratively, the mobile module 910 includes, but is not limited to, one of a motor, an oil cylinder, or a cylinder, and the zigzag pull plate 920 is fixedly disposed at an output end of the mobile module 910.

Illustratively, the second cylinder 810 is disposed on the zigzag pull plate 920, and the second cylinder 810 is disposed near one of the guide rails 110 to reduce the occupied space of the second driving assembly 800.

In this embodiment, the clamping mechanism 700 includes a clamping jaw assembly 710, a vertical drive 720 and a horizontal drive 730, wherein the clamping jaw assembly 710 is used for clamping the card 600; vertical drive 720 drives connecting jaw assembly 710 and moves in a third direction (Z) that is perpendicular to a plane formed by first direction (Y) and second direction (X); the lateral drive 730 is drivingly connected to the vertical drive 720 for movement in a first direction (Y) such that the vertical drive 720 moves the jaw assembly 710 above the meter 200. During testing, after the electric meter 200 is electrified for the first time for three seconds, the vertical driving 720 drives the clamping jaw assembly 710 to move along the third direction (Z) so that the clamping jaw assembly 710 clamps the electricity purchasing card 600, then the horizontal driving 730 drives the vertical driving 720 to move along the first direction (Y), so that the clamping jaw assembly 710 moves to the upper side of the electric meter 200, the vertical driving 720 continues to drive the clamping jaw assembly 710 to move along the third direction (Z), the electricity purchasing card 600 is inserted into the electric meter 200, the probe base 300 is electrified, and the electric meter 200 is electrified for the second time so as to check whether the test result is qualified or not, the manual transfer of the electricity purchasing card 600 is avoided, the degree of automation is improved, and the test efficiency of the electric meter 200 is improved.

Further, the vertical driving unit 720 includes a pressing cylinder, a cylinder block 721, and a pressing slide plate 722, the pressing cylinder is disposed in the cylinder block 721, the pressing slide plate 722 is slidably connected to the cylinder block 721, and the pressing slide plate 722 is connected to an output end of the pressing cylinder, and the clamping jaw assembly 710 is disposed on the pressing slide plate 722. When the vertical driving unit 720 drives the clamping jaw assembly 710 to move along the third direction (Z), the pressing cylinder pushes the pressing sliding plate 722 to slide along the cylinder block 721, the pressing sliding plate 722 presses the clamping jaw assembly 710, and the clamping jaw assembly 710 drives the electricity purchasing card 600 to be inserted into the electricity meter 200, so that the card inserting action is completed, the automation degree of card inserting is improved, the card inserting efficiency is improved, and the manual operation requirement is reduced.

Optionally, the pressing slide 722 and the clamping jaw assembly 710 are connected through a connecting seat 740, an elastic member 750 is provided between the pressing slide 722 and the connecting seat 740, and the connecting seat 740 is slidably connected with the pressing slide 722. The elastic member 750 can effectively buffer the impact force of the pressing slide plate 722 on the connection seat 740, so as to prevent the card 600 from being bumped at the card inserting position of the electric meter 200. Illustratively, one end of the elastic member 750 is connected to the bump 7221 of the pressing slide 722, the other end of the elastic member 750 abuts against the connection base 740, and the elastic member 750 may be configured as a spring.

Alternatively, the lateral drive 730 includes, but is not limited to, one of a motor, a cylinder, or a cylinder, and the cylinder block 721 is fixedly disposed at an output end of the lateral drive 730. Illustratively, the cylinder block 721 is coupled to the output of the transverse drive 730 via a fixed block 770 to facilitate mounting and dismounting of the cylinder block 721.

In this embodiment, the jaw assembly 710 includes a jaw cylinder 711 and two jaws 712 disposed at output ends of the jaw cylinder 711, the jaw cylinder 711 can drive the two jaws 712 to approach or separate from each other, and the jaw cylinder 711 is connected to the connection base 740. When the purchasing card 600 is clamped, the clamping jaw cylinder 711 drives the two clamping jaws 712 to be close to each other so as to clamp the purchasing card 600; after the purchase card 600 is inserted into the electricity meter 200, the clamping jaw cylinder 711 drives the two clamping jaws 712 away from each other to disengage from the purchase card 600.

Optionally, the clamping mechanism 700 further includes a pressure sensor 760, where the pressure sensor 760 is disposed between the elastic member 750 and the connection base 740, the pressure sensor 760 is configured to measure a pressure of the pressing slide plate 722 on the connection base 740, and when the electric meters 200 with different heights are subjected to card insertion operation, the depth of the card insertion position into which the card 600 is inserted downward is different, and by setting the pressure sensor 760, the pressure sensor 760 can identify a force application condition of the pressing slide plate 722, so as to determine whether the card 600 is inserted into the bottom of the card insertion position according to the pressure.

Preferably, the electricity meter testing device further includes a photo sensor 1000, the photo sensor 1000 being provided on the probe base 300, the photo sensor 1000 being used to sense the position of the electricity meter 200. When the first driving assembly 400 pushes the electricity meter 200 into contact with the probe mount 300, the photoelectric sensor 1000 senses that the electricity meter 200 is in place, and then the probe mount 300 is electrically tested.

In this embodiment, the second positioning fixture 500 includes a support 510 and a positioning seat 520 disposed on the support 510, where the clamping groove is disposed on a surface of the positioning seat 520 far away from the support 510, and the support 510 can increase the height of the positioning seat 520 so as to make it flush with the height of the electric meter 200 as much as possible, so as to reduce the moving range of the clamping mechanism 700 and increase the testing efficiency.

Optionally, the electric meter testing device further includes a control system, where the second driving assembly 800, the first driving assembly 400, the third driving assembly 900 and the clamping mechanism 700 are electrically connected to the control system, and the control system controls the second driving assembly 800, the first driving assembly 400, the third driving assembly 900 or the clamping mechanism 700 to act in time so as to improve the testing efficiency. The control system can be one of a PLC control system, a motion control card, a motion controller, a singlechip and the like.

The working process of the ammeter testing device provided by the embodiment is as follows: according to the size of the electric meter 200, the control system controls to start the third driving assembly 900, the third driving assembly 900 adjusts the distance between the two guide rails 110 so that the distance is matched with the size of the electric meter 200, after adjustment is completed, the electric meter 200 is placed in the first positioning jig 100, the control system controls to start the first driving assembly 400, the first driving assembly 400 pushes the electric meter 200 to slide along the directions of the two guide rails 110, which are close to the probe base 300, until the electric meter 200 enters the probe base 300, the probe base 300 is electrified to perform first three seconds of electricity-adding project on the electric meter 200, after test is completed, the control system controls to start the clamping mechanism 700, the clamping mechanism 700 clamps the electricity-purchasing card 600 from the clamping groove and inserts the electricity-purchasing card 600 into the electric meter 200, the probe base 300 is electrified again to perform second electricity-adding project, after test is completed, the control system controls to start the second driving assembly 800 pushes the electric meter 200 to slide along the directions of the two guide rails 110, which are far away from the probe base 300, and the original position is restored.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. Ammeter testing arrangement, its characterized in that includes:

the first positioning jig (100) comprises two parallel guide rails (110), wherein the distance between the two guide rails (110) can be adjusted, and the electric meter (200) can be accommodated between the two guide rails (110) and positioned in a first direction (Y);

the probe base (300) is arranged at one end of the guide rail (110), and the probe base (300) is used for being electrically connected with the ammeter (200);

a first driving assembly (400) disposed at the other end of the guide rail (110), the first driving assembly (400) being capable of pushing the electricity meter (200) in a second direction (X) toward the probe base (300) and bringing the electricity meter (200) into contact with the probe base (300);

the second positioning jig (500) is arranged on one side of the first positioning jig (100), the second positioning jig (500) comprises a plurality of clamping grooves, and an electricity purchasing card (600) is inserted in the clamping grooves;

a clamping mechanism (700) configured to clamp the electricity purchasing card (600) taken out of the clamping groove and insert the electricity purchasing card (600) into the electricity meter (200);

the first direction (Y) is perpendicular to the second direction (X).

2. The meter test device according to claim 1, further comprising a second drive assembly (800), the second drive assembly (800) being adapted to urge the meter (200) to slide in the second direction (X) away from the probe mount (300).

3. The electricity meter testing device according to claim 2, wherein the second driving assembly (800) comprises a second cylinder (810) and a push rod (820) provided at an output end of the second cylinder (810), the push rod (820) being interposed between the electricity meter (200) and the probe base (300);

the first driving assembly (400) comprises a first air cylinder (410) and a push block (420) arranged at the output end of the first air cylinder (410), and the push block (420) can be in contact with the ammeter (200).

4. The meter testing arrangement of claim 1, further comprising a third drive assembly (900), the third drive assembly (900) being configured to move one of the rails (110) in a direction away from or toward the other rail (110).

5. The electricity meter testing device according to claim 4, wherein the third driving assembly (900) comprises a moving module (910) and a zigzag pull plate (920) disposed on the moving module (910), one end of the zigzag pull plate (920) is connected to an output end of the moving module (910), and the other end of the zigzag pull plate (920) is connected to a side surface of one of the guide rails (110).

6. The electricity meter testing device according to claim 1, wherein the clamping mechanism (700) comprises:

-a jaw assembly (710) for gripping said purchase card (600);

a vertical drive (720) drivingly connected to the jaw assembly (710) and moving in a third direction (Z) perpendicular to a plane formed by the first direction (Y) and the second direction (X);

and the transverse driving device (730) is in driving connection with the vertical driving device (720) to move along a first direction (Y), so that the vertical driving device (720) drives the clamping jaw assembly (710) to move to the upper part of the ammeter (200).

7. The electricity meter testing device according to claim 6, wherein the vertical drive (720) comprises a pressing cylinder, a cylinder block (721) and a pressing slide plate (722), the pressing cylinder is arranged in the cylinder block (721), the pressing slide plate (722) is slidably connected to the cylinder block (721), the pressing slide plate (722) is connected with an output end of the pressing cylinder, and the clamping jaw assembly (710) is arranged on the pressing slide plate (722).

8. The electricity meter testing device according to claim 7, wherein the pressing slide (722) and the jaw assembly (710) are connected by a connecting seat (740), an elastic member (750) is provided between the pressing slide (722) and the connecting seat (740), and the connecting seat (740) is slidably connected with the pressing slide (722).

9. The electricity meter testing device according to claim 8, wherein the jaw assembly (710) comprises a jaw cylinder (711) and two jaws (712) arranged at the output end of the jaw cylinder (711), the jaw cylinder (711) can drive the two jaws (712) to approach or separate, and the jaw cylinder (711) is connected with the connection seat (740).

10. The electricity meter testing device of claim 8, wherein said clamping mechanism (700) further comprises a pressure sensor (760), said pressure sensor (760) being disposed between said elastic member (750) and said connection mount (740).

11. The meter testing device of any one of claims 1-10, further comprising a photosensor (1000), the photosensor (1000) being disposed on the probe base (300), the photosensor (1000) being configured to sense a position of the meter (200).