Electric energy meter verification auxiliary workbench

Abstract

A clamping assembly of the electric energy meter verification auxiliary workbench is connected with a connecting rod, the connecting rod can be clamped on a door frame, a connecting plate is vertically arranged on a base, the side, facing the clamping assembly, of the base abuts against the outer wall of a box body, and the structure and the outer wall of the box body form a triangular supporting structure. Due to the fact that the connecting rods are provided with the connecting positions which are arranged at intervals in the length direction and detachably and rotatably connected with the connecting plates, the base can be hung on the outer wall of the box body by adjusting the connecting points of the connecting plates and the connecting rods and the included angles of the connecting rods and the connecting plates, and the placement table top of the base is adjusted to be in the horizontal position. Therefore, the electric energy meter calibrator can be stably placed on the base. The auxiliary verification tool overcomes the defects that various existing auxiliary verification tools are limited in placement position, and tools are inconvenient to take, has the functions of being capable of being fixed at different positions, not limited by space, convenient to take and the like, and can safely and effectively carry out electric energy meter on-site verification work in a transformer substation switch cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of power auxiliary equipment, and particularly relates to an auxiliary workbench for verifying electric energy meters. Background Art

[0002] At present, there are mainly three types of auxiliary equipment for on-site verification of electric energy meters in substations: insulating pads, plastic gussets, and tool bags. The insulating pad is used to place the electric energy meter calibrator, mainly placed on the ground. For those with a length exceeding 1500 mm (the length of the test line of the calibration instrument), it cannot be used because there is a risk of accidentally touching the operating terminal due to the too long test line. The plastic gusset can be placed on the secondary terminal block in the instrument room of the switch cabinet, which is convenient for placing various tools or instruments. However, due to the space limitation of the instrument room of the switch cabinet, larger instruments cannot be placed. The tool bag can hold various tools for verifying electric energy meters. However, because there are many tools in the tool bag, it is impossible to quickly select the appropriate tool when taking the tool. Placing the electric energy meter calibrator in the tool bag also poses safety risks of accidentally touching the operating terminal and the wire clamp falling off. Summary of the Invention

[0003] The purpose of the present invention is to provide an auxiliary workbench for verifying electric energy meters, aiming to solve the technical problem that it is difficult to complete the on-site verification of electric energy meters due to the limitation of on-site conditions of the existing auxiliary equipment for on-site verification of electric energy meters.

[0004] To solve the above problems, according to one aspect of the present application, an embodiment of the present invention provides an auxiliary workbench for verifying electric energy meters, which is used to fix the electric energy meter calibrator on the instrument room of the switch cabinet. The instrument room of the switch cabinet includes a box body, and the box body has a door frame. The auxiliary workbench for verifying electric energy meters includes a clamping assembly, a connecting rod, a connecting plate, and a base. The clamping assembly is connected to the connecting rod to clamp the connecting rod on the door frame. The connecting rod has a plurality of connection positions arranged at intervals along the length direction and detachably and rotatably connected to the connecting plate. The connecting plate stands on the base, and one side of the base facing the clamping assembly abuts against the outer wall of the box body.

[0005] In some embodiments, the auxiliary workbench for verifying electric energy meters further includes a first locking member. The connection position includes a first through hole, and a first locking hole is formed on the connecting plate. The first locking member is locked with the first locking hole through any one of the first through holes.

[0006] In some embodiments, the connecting plate includes a first plate and a second plate. The first plate is rotatably connected to the base;

[0007] A first insertion slot for inserting and extracting the second plate is formed on one side of the first plate away from the base, or a second insertion slot for inserting and extracting the first plate is formed on one side of the second plate facing the base;

[0008] The second plate is connected to the connecting rod, and there is a first locking unit between the first plate and the second plate for locking the two together.

[0009] In some embodiments, the first locking unit includes two first guiding grooves formed on the second plate and two first engaging spring arms disposed on the first plate and respectively located in the two first guiding grooves. The first guiding grooves extend along the insertion and extraction direction. The side walls of the two first guiding grooves extending along the insertion and extraction direction are both formed with first racks, and the first engaging spring arms are engaged with the first racks; wherein, the tooth tops of the two first racks are arranged in opposite directions; or,

[0010] The first locking unit includes two second guiding grooves formed on the first plate and two second engaging spring arms disposed on the second plate and respectively located in the two second guiding grooves. The second guiding grooves extend along the insertion and extraction direction. The side walls of the two second guiding grooves extending along the insertion and extraction direction are both formed with second racks, and the second engaging spring arms are engaged with the second racks; wherein, the tooth tops of the two second racks are arranged in opposite directions.

[0011] In some embodiments, the base has a first extension plate extending towards the first plate and two side plates located on both sides of the first extension plate. One end of the first plate away from the second plate is rotatably connected to the two side plates, and the first plate is located on the side of the first extension plate away from the clamping assembly.

[0012] In some embodiments, the base includes a first base plate and a second base plate, and the second base plate is connected to the connecting plate;

[0013] A third insertion slot for inserting the second base plate is formed on the side of the first base plate facing the clamping assembly, or, a fourth insertion slot for inserting the first base plate is formed on the side of the second base plate away from the clamping assembly.

[0014] In some embodiments, the electric energy meter calibration auxiliary workbench further includes a support rod. At least two insertion holes are provided on the side wall of the base facing the clamping assembly, and the support rod is inserted into each of the insertion holes. A second locking unit for locking the support rod is provided in the insertion holes.

[0015] In some embodiments, the second locking unit includes a plurality of second locking holes formed on the support rod and a second locking member disposed on the side wall of the insertion hole and axially telescopic. The second locking member is located in any one of the second locking holes; wherein, the plurality of second locking holes are arranged at intervals along the axial direction of the support rod; or,

[0016] The second locking unit includes a plurality of third locking holes formed on the base and a third locking member disposed on the support rod and axially telescopic, and the third locking member is located in any one of the third locking holes; wherein, the plurality of third locking holes are arranged at intervals along the axial direction of the support rod.

[0017] In some embodiments, the auxiliary workbench for calibrating an electric energy meter further includes a vertical rod and a placing ring. The vertical rod is disposed on the base, and the placing ring is disposed at an end of the vertical rod away from the base.

[0018] In some embodiments, the vertical rod is rotatably connected to the base; and / or, the placing ring is rotatably connected to the vertical rod.

[0019] Compared with the prior art, the auxiliary workbench for calibrating an electric energy meter of the present invention has at least the following beneficial effects:

[0020] The embodiment of the present invention discloses an auxiliary workbench for calibrating an electric energy meter. The auxiliary workbench for calibrating an electric energy meter is used to fix an electric energy meter calibrator on an instrument chamber of a switch cabinet. The instrument chamber of the switch cabinet includes a box body, and the box body has a door frame in which an electric energy meter is installed. The auxiliary workbench for calibrating an electric energy meter of the present invention includes a clamping assembly, a connecting rod, a connecting plate and a base. The clamping assembly of the present invention is connected to the connecting rod and can clamp the connecting rod on the door frame. The connecting plate stands on the base, and one side of the base facing the clamping assembly abuts against the outer wall of the box body. This structure and the outer wall of the box body form a triangular support structure. Since the connecting rod has a plurality of connection positions arranged at intervals along the length direction and detachably and rotatably connected to the connecting plate, the base can be suspended on the outer wall of the box body by adjusting the connection point between the connecting plate and the connecting rod and the included angle between the connecting rod and the connecting plate, and the placing table surface of the base can be adjusted to a horizontal position, so that the electric energy meter calibrator can be stably placed on the base.

[0021] The auxiliary workbench for calibrating an electric energy meter of the present invention overcomes the disadvantages of existing various auxiliary calibration tools, such as limited placement positions and inconvenient access to tools. It has functions such as being able to be fixed at different positions, not being restricted by space, and being convenient for accessing tools, and can safely and effectively carry out on-site calibration work of electric energy meters in the switch cabinets of substations.

[0022] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the auxiliary workbench for electric energy meter calibration provided by the embodiment of the present invention;

[0025] Figure 2 is Figure 1 partial enlarged view of.

[0026] Explanation of reference numerals:

[0027] 1. Clamping assembly; 11. Chuck; 12. Hand clamp handle;

[0028] 2. Connecting rod; 21. First through hole;

[0029] 3. Connecting plate; 31. First plate; 311. First engaging elastic arm; 32. Second plate; 321. First rack;

[0030] 4. Base; 41. First base plate; 42. Second base plate; 421. First extension plate; 422. Side plate;

[0031] 5. First locking member;

[0032] 6. Support rod; 61. Second locking hole;

[0033] 7. Second locking member;

[0034] 8. Upright rod;

[0035] 9. Placing ring. Detailed implementation manners

[0036] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the drawings and preferred embodiments, will detail the specific implementation manners, structures, features, and their effects of the application according to the present invention. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0037] In the description of the present invention, it should be clear that the terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the present invention are used to distinguish similar objects and do not necessarily describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and does not mean that the indicated device or element must have a specific orientation or position, so it cannot be understood as a limitation to the present invention.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment 1

[0040] As Figure 1 - Figure 2 shown, the embodiment of the present invention provides an auxiliary workbench for calibrating an electric energy meter, which is used to fix the electric energy meter calibrator on the instrument room of the switch cabinet. The instrument room of the switch cabinet includes a box body, and the box body has a door frame. The auxiliary workbench for calibrating the electric energy meter includes a clamping assembly 1, a connecting rod 2, a connecting plate 3 and a base 4. The clamping assembly 1 is connected to the connecting rod 2 to clamp the connecting rod 2 on the door frame. The connecting rod 2 has a plurality of connecting positions arranged at intervals along the length direction and detachably and rotatably connected to the connecting plate 3. The connecting plate 3 stands on the base 4, and one side of the base 4 facing the clamping assembly 1 abuts against the outer wall of the box body.

[0041] The embodiment of the present invention provides an auxiliary workbench for calibrating an electric energy meter, which is used to fix the electric energy meter calibrator on the instrument room of the switch cabinet. The instrument room of the switch cabinet includes a box body, and the box body has a door frame. An electric energy meter is installed in the door frame. The auxiliary workbench for calibrating the electric energy meter in this embodiment includes a clamping assembly 1, a connecting rod 2, a connecting plate 3 and a base 4. The clamping assembly 1 in this embodiment is connected to the connecting rod 2 and can clamp the connecting rod 2 on the door frame. The connecting plate 3 stands on the base 4, and one side of the base 4 facing the clamping assembly 1 abuts against the outer wall of the box body. This structure and the outer wall of the box body form a triangular support structure. Since the connecting rod 2 has a plurality of connecting positions arranged at intervals along the length direction and detachably and rotatably connected to the connecting plate 3, the base 4 can be suspended on the outer wall of the box body by adjusting the connection point between the connecting plate 3 and the connecting rod 2 and the included angle between the connecting rod 2 and the connecting plate 3, and the placement table surface of the base 4 can be adjusted to a horizontal position, so that the electric energy meter calibrator can be stably placed on the base 4.

[0042] The clamping assembly 1 includes a chuck 11 and a hand clamp handle 12. An anti-slip pad can be provided on the chuck 11, and the chuck 11 is made of insulating material. The clamping assembly 1 can be an ABS strong clamp, the connecting rod 2 can be made of insulating plastic steel material, the connecting plate 3 can be made of insulating ABS material, and the base 4 can be entirely made of insulating ABS material. A layer of rubber anti-slip pad can be covered on the platform of the base 4 to prevent the calibration instrument from sliding.

[0043] The electric energy meter calibration auxiliary workbench of this embodiment overcomes the drawbacks of existing various auxiliary calibration tools, such as limited placement positions and inconvenient access to tools. It has functions such as being able to be fixed at different positions, not being restricted by space, and facilitating tool access, and can safely and effectively carry out on-site calibration work of electric energy meters in the switchgear of substations.

[0044] In some embodiments, the electric energy meter calibration auxiliary workbench further includes a first locking member 5. The connection position includes a first through hole 21, and a first locking hole is formed on the connecting plate 3. The first locking member 5 is locked with the first locking hole via any one of the first through holes 21.

[0045] In this embodiment, the multiple connection positions are multiple first through holes 21 arranged at intervals along the length direction of the connecting rod 2. In this embodiment, by forming a first locking hole on the connecting plate 3 and locking the first locking member 5 with the first locking hole via any one of the first through holes 21, the connecting rod 2 is detachably and rotatably connected to the connecting plate 3 along the length direction, facilitating the installation and adjustment of the electric energy meter calibration auxiliary workbench. Quickly adjust the placement tabletop of the base 4 to a horizontal position so that the electric energy meter calibrator can be stably placed on the base 4, saving installation time.

[0046] In some embodiments, the connecting plate 3 includes a first plate 31 and a second plate 32. The first plate 31 is rotatably connected to the base 4; a first insertion slot for the second plate 32 to be inserted and withdrawn is formed on the side of the first plate 31 away from the base 4; the second plate 32 is connected to the connecting rod 2, and a first locking unit for locking the two is provided between the first plate 31 and the second plate 32. In this embodiment, by forming a first insertion slot for the second plate 32 to be inserted and withdrawn on the side of the first plate 31 away from the base 4, the overall height of the connecting plate 3 is adjusted, facilitating quickly adjusting the placement tabletop of the base 4 to a horizontal position so that the electric energy meter calibrator can be stably placed on the base 4, saving installation time. After adjusting the placement tabletop of the base 4 to a horizontal position, lock the first plate 31 and the second plate 32 through the first locking unit to prevent the problem that the base 4 tilts and causes the electric energy meter calibrator to fall.

[0047] The first plate 31 is rotatably connected to the base 4, and when not in use, the connecting plate 3 and the base 4 can be folded, facilitating storage and carrying.

[0048] In some embodiments, the first locking unit includes two first guiding grooves formed in the second plate 32 and two first engaging spring arms 311 disposed on the first plate 31 and located in the two first guiding grooves respectively. The first guiding grooves extend along the insertion and extraction direction. First racks 321 are formed on the side walls of the two first guiding grooves extending along the insertion and extraction direction. The first engaging spring arms 311 are engaged with the first racks 321; wherein, the tooth tops of the two first racks 321 face away from each other.

[0049] The structure of this embodiment enables quick telescopic adjustment between the first plate 31 and the second plate 32, and at the same time, the locking is reliable, preventing the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall.

[0050] In some embodiments, the connecting plate 3 includes a first plate 31 and a second plate 32. The first plate 31 is rotatably connected to the base 4; a second insertion slot for the first plate 31 to be inserted and extracted is formed on the side of the second plate 32 facing the base 4; the second plate 32 is connected to the connecting rod 2, and a first locking unit for locking the two is provided between the first plate 31 and the second plate 32. In this embodiment, by forming a second insertion slot for the first plate 31 to be inserted and extracted on the side of the second plate 32 facing the base 4, the overall height of the connecting plate 3 is adjusted, facilitating quickly adjusting the placement table of the base 4 to a horizontal position, enabling the watt-hour meter calibrator to be stably placed on the base 4 and saving installation time. After adjusting the placement table of the base 4 to a horizontal position, the first plate 31 and the second plate 32 are locked by the first locking unit, preventing the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall.

[0051] The first locking unit includes two second guiding grooves formed in the first plate 31 and two second engaging spring arms disposed on the second plate 32 and located in the two second guiding grooves respectively. The second guiding grooves extend along the insertion and extraction direction. Second racks are formed on the side walls of the two second guiding grooves extending along the insertion and extraction direction. The second engaging spring arms are engaged with the second racks; wherein, the tooth tops of the two second racks face away from each other.

[0052] The structure of this embodiment enables quick telescopic adjustment between the first plate 31 and the second plate 32, and at the same time, the locking is reliable, preventing the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall.

[0053] In some embodiments, the base 4 has a first extension plate 421 extending toward the first plate 31 and two side plates 422 located on both sides of the first extension plate 421. One end of the first plate 31 away from the second plate 32 is rotatably connected to both of the side plates 422, and the first plate 31 is located on the side of the first extension plate 421 away from the clamping assembly 1.

[0054] The structure of this embodiment can fold the connecting plate 3 and the base 4 when not in use, which is convenient for storage and carrying. In addition, the first plate 31 is located on the side of the first extension plate 421 away from the clamping assembly 1. The first extension plate 421 limits the first plate 31 to prevent the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall.

[0055] In some embodiments, the base 4 includes a first base plate 41 and a second base plate 42. The second base plate 42 is connected to the connecting plate 3; a third insertion slot for the second base plate 42 to be inserted and removed is formed on one side of the first base plate 41 facing the clamping assembly 1. In this embodiment, by the insertion and removal between the first base plate 41 and the second base plate 42, the support area of the base 4 can be adjusted, and calibrators of different sizes can be placed.

[0056] In some embodiments, the base 4 includes a first base plate 41 and a second base plate 42. The second base plate 42 is connected to the connecting plate 3; a fourth insertion slot for the first base plate 41 to be inserted and removed is formed on one side of the second base plate 42 away from the clamping assembly 1. In this embodiment, by the insertion and removal between the first base plate 41 and the second base plate 42, the support area of the base 4 can be adjusted, and calibrators of different sizes can be placed.

[0057] In some embodiments, the watt-hour meter calibration auxiliary workbench further includes a support rod 6. At least two insertion holes are provided on the side wall of the base 4 facing the clamping assembly 1. The support rod 6 is inserted and removed in each of the insertion holes, and a second locking unit for locking the support rod 6 is provided in the insertion holes.

[0058] In this embodiment, the support rod 6 is inserted and removed in the insertion holes on the side wall of the base 4 facing the clamping assembly 1, so as to adjust the support length of the support rod 6 for the base 4, and the placement table of the base 4 can be quickly adjusted to a horizontal position, so that the watt-hour meter calibrator can be stably placed on the base 4. The installation time is saved. When the placement table of the base 4 is adjusted to a horizontal position, the support rod 6 is locked in the insertion hole by the second locking unit in the insertion hole to prevent the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall. The support rod 6 can be made of insulating ABS material as a whole.

[0059] In some embodiments, the second locking unit includes a plurality of second locking holes 61 formed on the support rod 6 and a second locking member 7 disposed on the side wall of the insertion hole and axially telescopic, and the second locking member 7 is located in any one of the second locking holes 61; wherein, the plurality of second locking holes 61 are arranged at intervals along the axial direction of the support rod 6. The structure of the embodiment can lock the support rod 6 in the insertion hole, preventing the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall.

[0060] In some embodiments, the second locking unit includes a plurality of third locking holes formed on the base 4 and a third locking member disposed on the support rod 6 and axially telescopic, and the third locking member is located in any one of the third locking holes; wherein, the plurality of third locking holes are arranged at intervals along the axial direction of the support rod 6. The structure of the embodiment can lock the support rod 6 in the insertion hole, preventing the problem that the base 4 tilts and causes the watt-hour meter calibrator to fall.

[0061] In some embodiments, the watt-hour meter calibration auxiliary workbench further includes a vertical rod 8 and a placement ring 9. The vertical rod 8 is disposed on the base 4, and the placement ring 9 is disposed at one end of the vertical rod 8 away from the base 4. In this embodiment, on-site calibration tools such as screwdrivers, wire clips, and insulating tapes can be placed in the placement ring 9 for easy access. The placement ring 9 is made of ABS insulating material as a whole.

[0062] In some embodiments, the vertical rod 8 is rotatably connected to the base 4; and / or, the placement ring 9 is rotatably connected to the vertical rod 8. The structure of this embodiment can bend and fold the placement ring 9 on the base 4 when not in use and unfold it when in use. It is convenient for the storage and carrying of the watt-hour meter calibration auxiliary workbench.

[0063] When the watt-hour meter calibration auxiliary workbench of the present invention is used for on-site calibration of watt-hour meters in a switch cabinet, generally only one staff member is required to complete the work except for the supervisor. The work steps are as follows:

[0064] First step: The staff member confirms the edge position of the switch cabinet instrument room (the door frame of the box body), and according to the position of the switch cabinet instrument room, opens the device clamping assembly 1, fixes the chuck 11 of the clamping assembly 1 on the edge of the switch cabinet instrument room (door frame), and adjusts the position of the connecting rod 2 connected to the clamping assembly 1 according to the actual situation on site;

[0065] Second step: Adjust the length of the connecting plate 3 to a suitable position;

[0066] Step 3: After the position is adjusted properly, the operator tightens the connecting rod 2 and the connecting plate 3 with the first locking member 5. Then, the support rod 6 on the base 4 is pulled out, and the universal base of the support rod 6 is fixed on the switch cabinet (cabinet), forming a triangular physical stable structure with the connecting rod 2 to ensure that the base 4 does not shake or tilt.

[0067] Step 4: Adjust the length of the base 4 according to the size of the watt-hour meter calibrator, and place the watt-hour meter calibrator on the platform of the base 4. After the calibrator is placed and fixed, prepare for the calibration wiring.

[0068] Step 5: Place the tools required for the on-site calibration of the watt-hour meter in the storage ring 9, which is convenient for accessing various tools when carrying out the on-site calibration work of the watt-hour meter.

[0069] Step 6: Carry out the on-site inspection work of the watt-hour meter. After the inspection work is completed, first remove the inspection device from the base 4, take out various tools placed in the storage ring 9, refold and store the storage ring 9 back into the base 4. Then, store the support rod 6 into the base 4, loosen the first locking member 5 of the connecting rod 2 and the connecting plate 3, and loosen the clamping assembly 1, and remove the auxiliary workbench for watt-hour meter calibration from the switch cabinet.

[0070] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described devices, apparatuses, and units can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0071] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An auxiliary workbench for calibrating an electric energy meter, which is used to fix an electric energy meter calibrator on the instrument room of a switch cabinet. The instrument room of the switch cabinet includes a box body, and the box body has a door frame. It is characterized in that, The auxiliary workbench for verifying the electricity meter includes a clamping component (1), a connecting rod (2), a connecting plate (3), and a base (4). The clamping component (1) is connected to the connecting rod (2) to clamp the connecting rod (2) on the door frame. The connecting rod (2) has a plurality of connection positions arranged at intervals along the length direction and detachably and rotatably connected to the connecting plate (3). The connecting plate (3) stands on the base (4), and one side of the base (4) facing the clamping component (1) abuts against the outer wall of the box body.

2. The auxiliary workbench for verifying an electric energy meter according to claim 1, wherein The auxiliary workbench for verifying the electricity meter further includes a first locking member (5). The connection position includes a first through hole (21), and a first locking hole is formed on the connecting plate (3). The first locking member (5) is locked with the first locking hole through any one of the first through holes (21).

3. The auxiliary workbench for verifying an electric energy meter according to claim 1, characterized in that, The connecting plate (3) includes a first plate (31) and a second plate (32). The first plate (31) is rotatably connected to the base (4). On one side of the first plate (31) away from the base (4), a first insertion slot for inserting and extracting the second plate (32) is formed, or on one side of the second plate (32) facing the base (4), a second insertion slot for inserting and extracting the first plate (31) is formed. The second plate (32) is connected to the connecting rod (2), and a first locking unit for locking the first plate (31) and the second plate (32) is provided between the first plate (31) and the second plate (32).

4. The auxiliary workbench for verifying electric energy meters according to claim 3, wherein, The first locking unit includes two first guiding grooves formed on the second plate (32) and two first engaging spring arms (311) provided on the first plate (31) and located in the two first guiding grooves respectively. The first guiding grooves extend along the insertion and extraction direction. First racks (321) are formed on the side walls of the two first guiding grooves extending along the insertion and extraction direction. The first engaging spring arms (311) are engaged with the first racks (321). Among them, the tooth tops of the two first racks (321) face away from each other; or, The first locking unit includes two second guiding grooves formed on the first plate (31) and two second engaging spring arms provided on the second plate (32) and located in the two second guiding grooves respectively. The second guiding grooves extend along the insertion and extraction direction. Second racks are formed on the side walls of the two second guiding grooves extending along the insertion and extraction direction. The second engaging spring arms are engaged with the second racks. Among them, the tooth tops of the two second racks face away from each other.

5. The auxiliary workbench for verifying an electric energy meter according to claim 3, characterized in that On the base (4), a first extension plate (421) extending towards the first plate (31) and two side plates (422) located on both sides of the first extension plate (421) are provided. One end of the first plate (31) away from the second plate (32) is rotatably connected to the two side plates (422), and the first plate (31) is located on one side of the first extension plate (421) away from the clamping component (1).

6. The auxiliary workbench for electric energy meter calibration according to claim 1, characterized in that, The base (4) includes a first base plate (41) and a second base plate (42). The second base plate (42) is connected to the connecting plate (3). On one side of the first substrate (41) facing the clamping assembly (1), a third insertion slot for inserting and extracting the second substrate (42) is provided, or, on one side of the second substrate (42) away from the clamping assembly (1), a fourth insertion slot for inserting and extracting the first substrate (41) is provided.

7. The auxiliary workbench for verifying the electricity meter according to claim 1, characterized in that, The auxiliary workbench for verifying electric energy meters further includes a support rod (6). At least two insertion holes are provided on the side wall of the base (4) facing the clamping assembly (1). The support rod (6) is inserted into each of the insertion holes, and a second locking unit for locking the support rod (6) is provided in the insertion holes.

8. The auxiliary workbench for verifying an electric energy meter according to claim 7, characterized in that, The second locking unit includes a plurality of second locking holes (61) formed on the support rod (6) and a second locking member (7) provided on the side wall of the insertion hole and axially telescopic. The second locking member (7) is located in any one of the second locking holes (61); wherein, the plurality of second locking holes (61) are arranged at intervals along the axial direction of the support rod (6); or, The second locking unit includes a plurality of third locking holes formed on the base (4) and a third locking member provided on the support rod (6) and axially telescopic. The third locking member is located in any one of the third locking holes; wherein, the plurality of third locking holes are arranged at intervals along the axial direction of the support rod (6).

9. The auxiliary workbench for electric energy meter calibration according to claim 1, wherein The auxiliary workbench for verifying electric energy meters further includes a vertical rod (8) and a placing ring (9). The vertical rod (8) is provided on the base (4), and the placing ring (9) is provided at one end of the vertical rod (8) away from the base (4).

10. The auxiliary workbench for verifying an electric energy meter according to claim 9, characterized in that, The vertical rod (8) is rotatably connected to the base (4); and / or, the placing ring (9) is rotatably connected to the vertical rod (8).

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