Double-track intelligent carrying trolley for automatic verification of electric energy meter

Abstract

The invention belongs to the technical field of electric energy meter verification equipment, and particularly relates to a double-rail type electric energy meter automatic verification intelligent carrying trolley which comprises a rack, a pair of conveying belts is arranged on the rack, and a positioning and clamping device for positioning, clamping and fixing an electric energy meter is further arranged on the rack; the positioning and clamping device comprises a clamping structure arranged in the conveying direction of the conveying belt, the clamping structure is connected with a positioning structure for positioning the electric energy meter, the electric energy meter is clamped and loosened along with the clamping structure, and the positioning structure ascends and descends downwards and upwards along the rack; the clamping structure comprises a pair of sliding frames sliding along the rack, and the sliding frames are rotationally connected with clamping plates for fixing the electric energy meter; a supporting plate capable of lifting up and down along the rack to support the bottom of the electric energy meter is arranged between the pair of sliding frames; the invention provides the double-track type intelligent carrying trolley for the automatic verification of the electric energy meter, which can be used for conveying, positioning, clamping and fixing the electric energy meter.

Description

Technical Field

[0001] The invention belongs to the technical field of electric energy meter calibration equipment, and in particular relates to a dual-track electric energy meter automatic calibration intelligent transport vehicle. Background Art

[0002] During the production process, the energy meter is verified (i.e., the meter is tested and calibrated) to ensure its accuracy and reliability. The energy meter is an important device used to measure the energy consumption in the power system. Its accuracy directly affects the fairness of electricity billing and the vital interests of users. Therefore, the verification of the energy meter is very important to ensure fair transactions in the power market and avoid disputes and losses caused by measurement errors.

[0003] During the calibration process of the electric energy meter, a transport trolley is driven by a double-track conveyor belt to move between various workstations, and the electric energy meter is supported and fixed by the transport trolley; however, when the existing transport trolley is in use, the electric energy meter on the transport trolley is mostly transferred by a robot to transfer the electric energy meter between various workstations, resulting in the need to set up a corresponding robot at each workstation, which increases the cost of the entire electric energy meter automated calibration production line. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dual-track electric energy meter automatic calibration intelligent transport vehicle capable of transporting, positioning, clamping and fixing the electric energy meter.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a dual-track intelligent transport vehicle for automatic calibration of electric energy meters, including a frame, a pair of conveyor belts are arranged on the frame, and a positioning and clamping device for positioning, clamping and fixing the electric energy meter is also arranged on the frame; the positioning and clamping device includes a clamping structure arranged along the conveying direction of the conveyor belt, and a positioning structure for positioning the electric energy meter is connected to the clamping structure, and the electric energy meter is clamped and released as the clamping structure is clamped, and the positioning structure is lifted and lowered along the frame; the clamping structure includes a pair of sliding frames that slide along the frame, and a clamping plate for fixing the electric energy meter is rotatably connected to the sliding frame; a support plate that can be lifted and lowered along the frame to support the bottom of the electric energy meter is arranged between the pair of sliding frames, and the support plate is lifted and lowered along the frame as the clamping plate is rotated along the sliding frame to a vertical state, so that the electric energy meter is separated from the conveyor belt.

[0006] Furthermore, the frame includes a bottom plate, both ends of which are provided with mounting seats that cooperate with the double-track conveyor belts; a vertical plate is fixedly connected to the bottom plate, a support plate is fixedly connected to the vertical plate, and a pair of the conveyor belts are arranged on the support plate.

[0007] Furthermore, the frame is slidably connected to a lifting frame that moves up and down, and the positioning structure is arranged on the lifting frame; the lifting frame is provided with a clamping component that drives the sliding frame to slide along the frame, and the frame is provided with an unfolding component that drives the clamping plate to rotate as the sliding frame slides along the frame.

[0008] Furthermore, a lifting and telescopic rod is fixedly connected to the frame, and the telescopic end of the lifting and telescopic rod is fixedly connected to the lifting frame; a vertical axis is fixedly connected to the frame, and the lifting frame can slide up and down along the vertical axis.

[0009] Furthermore, the clamping assembly includes a driving rod rotatably connected to the lifting frame, and the driving rod is rotatably connected to the sliding frame; a sliding rod is fixed to the frame, and the sliding frame can slide left and right along the sliding rod.

[0010] Furthermore, the unfolding assembly includes a driving frame fixed to the frame, and a driving groove is provided on the driving frame; the clamping plate is coaxially fixed with a folding rod that cooperates with the driving groove, and the folding rod is rotatably connected with a roller that cooperates with the driving groove; the driving groove includes a horizontally arranged unfolding locking groove, and the unfolding locking groove is connected to an inclined rotating groove, and the end of the rotating groove away from the unfolding locking groove is connected to a horizontally arranged folding locking groove.

[0011] Furthermore, the clamping plate is coaxially fixed with a driving bevel gear, and the sliding frame is rotatably connected with a driven bevel gear meshing with the driving bevel gear; the driven bevel gear is fixed with a spline shaft, and the spline shaft is slidably connected with a spline cylinder rotatably connected to the frame; the spline cylinder is fixed with an input bevel gear, and the input bevel gear is meshed with an output bevel gear, and the output bevel gear is connected with a lifting component that drives the support plate to move up and down.

[0012] Furthermore, the lifting assembly includes a crank coaxially fixed to the output bevel gear, a connecting rod is rotatably connected to the crank, and the other end of the connecting rod is rotatably connected to the support plate; a support rod is fixed to the support plate, and a through hole is provided on the frame to guide the support rod.

[0013] Furthermore, the positioning structure includes a bidirectional telescopic rod fixed to the lifting frame, and a pair of telescopic ends of the bidirectional telescopic rod are fixedly connected to a positioning plate for positioning the electric energy meter; a guide rod is fixedly connected to the positioning plate, and a guide cylinder is fixedly connected to the lifting frame to guide the guide rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is in use, by setting a conveyor belt on the frame, the electric energy meter can be transferred between the carrying trolley and each workstation through the conveyor belt, so as to reduce the number of manipulators set up, which can effectively reduce the cost of the entire electric energy meter automatic calibration production line; in addition, when the electric energy meter is clamped and fixed, the electric energy meter is driven to move in the horizontal direction by the conveyor belt, and the vertical direction of the electric energy meter is adjusted and positioned by the positioning structure, so that the electric energy meter is arranged in the center of the present application, and the electric energy meter is clamped and fixed by the clamping structure to facilitate subsequent calibration operations.

[0015] 2. When the present invention is in use, through the arrangement of the lifting frame, the clamping assembly, the unfolding assembly, the pallet, etc., when the lifting frame is lifted up and down, the sliding frame is driven to slide along the frame through the clamping assembly. Under the action of the unfolding assembly, when the sliding frame slides, the clamping plate rotates along the sliding frame to unfold or fold; when the clamping plate is unfolded and folded, it can drive the pallet to lift up and down, so that the electric energy meter moves up and down and is separated from the conveyor belt or placed on the conveyor belt, so that the conveyor belt is switched to drive the electric energy meter to move, and the pallet supports the electric energy meter to improve the stability of the electric energy meter.

[0016] 3. When the present invention is in use, the lifting frame moves up and down, which can drive the positioning structure to move up and down, so that the positioning structure moves downward away from the electric energy meter, so that the two ends of the electric energy meter are open, so that the electric energy meter calibration organization can calibrate the electric energy meter, thereby improving the convenience of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the positioning and clamping device in the present invention; Figure 3 It is a structural schematic diagram of the positioning structure in the present invention; Figure 4 It is a structural schematic diagram of the clamping structure in the present invention; Figure 5 It is a first isometric view of the matching state of the structures such as the sliding frame, the clamping plate, the driving frame, the folding rod, and the spline cylinder in the present invention; Figure 6 A second isometric view of the matching state of the sliding frame, the clamping plate, the driving frame, the folding rod, the spline cylinder and other structures in the present invention; Figure 7 It is a schematic diagram of the matching state of the support plate, crank, connecting rod, spline cylinder and other structures in the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the middle A area; In the figure: 1, base plate, 2, mounting seat, 3, positioning plate, 4, electric energy meter, 5, clamping plate, 6, conveyor belt, 7, support plate, 8, support plate, 9, lifting frame, 10, driving rod, 11, sliding rod, 12, sliding frame, 13, two-way telescopic rod, 14, guide cylinder, 15, guide rod, 16, lifting and telescopic rod, 17, spline cylinder, 18, driving frame, 19, rotating groove, 20, folding rod, 21, roller, 22, driving bevel gear, 23, crank, 24, connecting rod, 25, input bevel gear, 26, spline shaft, 27, driven bevel gear, 28, unfolding locking groove, 29, folding locking groove, 30, support rod, 31, output bevel gear. DETAILED DESCRIPTION

[0018] A dual-track electric energy meter automatic calibration intelligent transport vehicle, such as Figure 1-8 As shown, the frame includes a pair of conveyor belts 6, and the frame is also provided with a positioning and clamping device for positioning, clamping and fixing the electric energy meter 4; the positioning and clamping device includes a clamping structure arranged along the conveying direction of the conveyor belt 6, and the clamping structure is connected to a positioning structure for positioning the electric energy meter 4. The electric energy meter 4 is clamped and released as the clamping structure is clamped, and the positioning structure is lifted and lowered along the frame; the clamping structure includes a pair of sliding frames 12 that slide along the frame, and the sliding frames 12 are rotatably connected with a clamping plate 5 for fixing the electric energy meter 4, and the sliding frames 12 and the clamping plates 5 are both arranged between the pair of conveyor belts 6; a support plate 8 that can be lifted and lowered along the frame to support the bottom of the electric energy meter 4 is provided between the pair of sliding frames 12, and the support plate 8 is raised along the frame to lift up the electric energy meter 4 as the clamping plate 5 rotates along the sliding frame 12 to a vertical state, so that the electric energy meter 4 is separated from the conveyor belt 6.

[0019] When the present invention is in use, the conveyor belt 6 is set on the frame, so that the electric energy meter 4 can be transferred between the carrying trolley and each workstation through the conveyor belt 6, so as to reduce the number of manipulators, and can effectively reduce the cost of the entire electric energy meter 4 automatic calibration production line; in addition, when the electric energy meter 4 is clamped and fixed, the electric energy meter 4 is driven to move in the horizontal direction by the conveyor belt 6, and the vertical direction of the electric energy meter 4 is adjusted and positioned by the positioning structure, so that the electric energy meter 4 is arranged in the center of the present application, so as to facilitate subsequent calibration operations; when the clamping structure clamps the electric energy meter 4, the sliding frame 12 is used to carry The movable clamping plate 5 moves toward the electric energy meter 4, and the electric energy meter 4 is clamped and fixed by the clamping plate 5 on the sliding frame 12; specifically, when the sliding frame 12 drives the clamping plate 5 to move, the clamping plate 5 rotates along the sliding frame 12 to a vertical state, and at this time, the supporting plate 8 rises along the frame to lift up the electric energy meter 4, so that the electric energy meter 4 is separated from the conveyor belt 6; that is, the clamping plate 5 and the supporting plate 8 cooperate to clamp, support and fix the two sides and the bottom of the electric energy meter 4 to improve the stability of the electric energy meter 4; in addition, during the process of clamping and fixing the electric energy meter 4 by the clamping plate 5, the positioning structure moves downward away from the electric energy meter 4, so that the two ends of the electric energy meter 4 are open, such as Figure 1 As shown, the electric energy meter 4 calibration mechanism can calibrate the electric energy meter 4, thereby improving the convenience of the present application.

[0020] Furthermore, the frame includes a base plate 1, both ends of which are provided with mounting seats 2 that cooperate with the double-track conveyor belt; a vertical plate is fixedly connected to the base plate 1, and a support plate 7 is fixedly connected to the vertical plate. A pair of conveyor belts 6 are arranged on the support plate 7, and the structure of the positioning and clamping device is supported by the support plate 7 to improve the stability of the present application.

[0021] Furthermore, if Figure 4 As shown, the frame is slidably connected with a lifting frame 9 that moves up and down, and a positioning structure is arranged on the lifting frame 9; the lifting frame 9 is provided with a clamping assembly that drives the sliding frame 12 to slide along the frame, and the frame is provided with an unfolding assembly that drives the clamping plate 5 to rotate as the sliding frame 12 slides along the frame; when the lifting frame 9, the clamping assembly and the unfolding assembly are used in coordination, when the lifting frame 9 is lifted up and down, the sliding frame 12 is driven to slide along the frame by the clamping assembly, and under the action of the unfolding assembly, when the sliding frame 12 slides, the clamping plate 5 rotates along the sliding frame 12 to unfold or fold, which can effectively reduce the use of the driving unit.

[0022] Furthermore, a lifting and telescopic rod 16 is fixedly connected to the frame, and the telescopic end of the lifting and telescopic rod 16 is fixedly connected to the lifting frame 9; a vertical axis is fixedly connected to the frame, and the lifting frame 9 can slide up and down along the vertical axis; the lifting frame 9 is driven to move up and down by the lifting and telescopic rod 16, and the lifting frame 9 is guided by the vertical axis to improve the stability of the lifting frame 9.

[0023] Furthermore, the clamping assembly includes a driving rod 10 rotatably connected to the lifting frame 9, and the driving rod 10 is rotatably connected to the sliding frame 12; a sliding rod 11 is fixed to the frame, and the sliding frame 12 can slide left and right along the sliding rod 11; when the lifting frame 9 moves up and down, the lifting frame 9 drives the sliding frame 12 to slide left and right along the sliding rod 11 through the driving rod 10.

[0024] Furthermore, if Figure 5 and Figure 6 As shown, the unfolding assembly includes a driving frame 18 fixed to the frame, and a driving groove is provided on the driving frame 18; the clamping plate 5 is coaxially fixed with a folding rod 20 that cooperates with the driving groove, and the folding rod 20 is rotatably connected with a roller 21 that cooperates with the driving groove; the driving groove includes a horizontally arranged unfolding locking groove 28, and the unfolding locking groove 28 is connected to an inclined rotating groove 19, and the end of the rotating groove 19 away from the unfolding locking groove 28 is connected to a horizontally arranged folding locking groove 29.

[0025] like Figure 6 As shown, when the sliding frame 12 moves to the right, the roller 21 passes through the unfolding locking groove 28, the rotating groove 19, and the folding locking groove 29 in sequence. In the unfolding locking groove 28, the roller 21 moves horizontally with the folding rod 20 and the clamping plate 5, and the roller 21 cooperates with the unfolding locking groove 28 to lock the unfolded clamping plate 5; under the action of the rotating groove 19, the roller 21 drives the clamping plate 5 to rotate to the horizontal direction through the folding rod 20; under the action of the folding locking groove 29, the folded clamping plate 5 is locked; through the setting of the unfolding locking groove 28, the rotating groove 19, and the folding locking groove 29, when the clamping plate 5 moves horizontally with the sliding frame 12, the roller 21, the folding rod 20 cooperates with the unfolding locking groove 28, the rotating groove 19, and the folding locking groove 29, so that the clamping plate 5 passes through the unfolding locking, 90-degree rotation folding, and folding locking actions in sequence.

[0026] Furthermore, if Figure 5-8 As shown, the clamping plate 5 is coaxially fixed with a driving bevel gear 22, and a driven bevel gear 27 meshing with the driving bevel gear 22 is rotatably connected on the sliding frame 12; a spline shaft 26 is fixed to the driven bevel gear 27, and a spline cylinder 17 rotatably connected to the spline shaft 26 is slidably connected to the spline cylinder 17 rotatably connected to the frame; an input bevel gear 25 is fixed to the spline cylinder 17, and an output bevel gear 31 is meshed on the input bevel gear 25, and a lifting assembly that drives the support plate 8 to move up and down is connected to the output bevel gear 31; the lifting assembly includes a crank 23 coaxially fixed with the output bevel gear 31, a connecting rod 24 is rotatably connected to the crank 23, and the other end of the connecting rod 24 is rotatably connected to the support plate 8, and the support plate 8 is provided with a through groove corresponding to the crank 23, the connecting rod 24, the spline shaft 26, the spline cylinder 17 and other structures; a support rod 30 is fixed to the support plate 8, and a through hole for guiding the support rod 30 is provided on the frame.

[0027] When the clamping plate 5 rotates, the clamping plate 5 drives the active bevel gear 22 to rotate, and the active bevel gear 22 drives the driven bevel gear 27 to rotate along the sliding frame 12; the sliding frame 12 drives the input bevel gear 25 to rotate through the spline shaft 26 and the spline cylinder 17, and the input bevel gear 25 drives the output bevel gear 31 to rotate; the output bevel gear 31 drives the crank 23 to rotate, and the crank 23 drives the support plate 8 to move up and down through the connecting rod 24, and guides the support plate 8 through the support rod 30 and the perforation; through the arrangement of the active bevel gear 22, the spline shaft 26, the spline cylinder 17, the crank 23 and other structures, the clamping plate 5 can synchronously drive the support plate 8 to move up and down when it rotates, thereby improving the linkage of the present application.

[0028] Furthermore, if Figure 3 As shown, the positioning structure includes a two-way telescopic rod 13 fixedly connected to the lifting frame 9, and a pair of telescopic ends of the two-way telescopic rod 13 are fixedly connected to a positioning plate 3 for positioning the electric energy meter 4; a guide rod 15 is fixedly connected to the positioning plate 3, and a guide cylinder 14 is fixedly connected to the lifting frame 9 for guiding the guide rod 15; the positioning plate 3 is guided by the cooperation of the guide rod 15 and the guide cylinder 14 to improve the stability of the positioning plate 3.

[0029] The working process of the present invention is: When the present invention is in use, the electric energy meter 4 at each workstation is placed on the conveyor belt 6 of the present application through the corresponding conveyor belt and the manipulator, and the electric energy meter 4 is driven to move in the lateral direction by the conveyor belt 6; the bidirectional telescopic rod 13 is started, and the bidirectional telescopic rod 13 drives the positioning plate 3 to clamp and position the electric energy meter 4 on the conveyor belt 6; after the electric energy meter 4 is clamped and positioned, the bidirectional telescopic rod 13 drives the positioning plate 3 to move away from the electric energy meter 4, and the lifting telescopic rod 16 is started.

[0030] The lifting and telescopic rod 16 drives the lifting frame 9 to descend, and the lifting frame 9 drives the sliding frame 12 to move toward the electric energy meter 4 through the driving rod 10; the sliding frame 12 drives the clamping plate 5 to move, and the clamping plate 5 drives the roller 21 through the folding locking groove 29 through the folding rod 20 to enter the rotating groove 19, and under the action of the rotating groove 19, the roller 21 cooperates with the folding rod 20 to rotate the clamping plate 5 to a vertical state; after the clamping plate 5 rotates to a vertical state, the sliding frame 12 continues to move toward the electric energy meter 4, and the sliding frame 12 drives the electric energy meter 4 in the vertical state to clamp and fix the electric energy meter 4.

[0031] At the same time, during the rotation of the clamping plate 5, the clamping plate 5 drives the active bevel gear 22 to rotate, and the active bevel gear 22 drives the driven bevel gear 27 to rotate along the sliding frame 12; the sliding frame 12 drives the input bevel gear 25 to rotate through the spline shaft 26 and the spline cylinder 17, and the input bevel gear 25 drives the output bevel gear 31 to rotate; the output bevel gear 31 drives the crank 23 to rotate, and the crank 23 drives the support plate 8 to move upward through the connecting rod 24, and the support plate 8 lifts the electric energy meter 4 to separate the electric energy meter 4 from the conveyor belt 6.

[0032] In addition, when the lifting frame 9 descends, the two-way telescopic rod 13 and the positioning plate 3 are driven to descend, so that the positioning plate 3 moves downward away from the electric energy meter 4, so that the two ends of the electric energy meter 4 are opened. Figure 1 As shown, the electric energy meter 4 calibration mechanism can calibrate the electric energy meter 4, thereby improving the convenience of the present application.

Claims

1. A dual-track electric energy meter automatic calibration intelligent transport vehicle, characterized in that: The invention comprises a frame, a pair of conveyor belts (6) are arranged on the frame, and a positioning clamping device for positioning, clamping and fixing an electric energy meter (4) is also arranged on the frame; the positioning clamping device comprises a clamping structure arranged along the conveying direction of the conveyor belt (6), the clamping structure is connected to a positioning structure for positioning the electric energy meter (4), the positioning structure is lifted and lowered along the frame as the clamping structure clamps and releases the electric energy meter (4); the clamping structure comprises a pair of sliding frames (12) sliding along the frame, a clamping plate (5) for fixing the electric energy meter (4) is rotatably connected to the sliding frame (12); a support plate (8) is arranged between the pair of sliding frames (12) and can be lifted and lowered along the frame to support the bottom of the electric energy meter (4); the support plate (8) is lifted and lowered along the frame as the clamping plate (5) rotates along the sliding frame (12) to a vertical state, and lifts up the electric energy meter (4) so ​​that the electric energy meter (4) is separated from the conveyor belt (6).

2. The dual-track electric energy meter automatic calibration intelligent transport vehicle as claimed in claim 1, characterized in that: The frame comprises a bottom plate (1), both ends of which are provided with mounting seats (2) that cooperate with the double-track conveyor belt (6); a vertical plate is fixedly connected to the bottom plate (1), a support plate (7) is fixedly connected to the vertical plate, and a pair of conveyor belts (6) are arranged on the support plate (7).

3. The dual-track electric energy meter automatic calibration intelligent transport vehicle as claimed in claim 1, characterized in that: The frame is slidably connected to a lifting frame (9) that moves up and down, and a positioning structure is arranged on the lifting frame (9); the lifting frame (9) is provided with a clamping component that drives the sliding frame (12) to slide along the frame, and the frame is provided with an unfolding component that drives the clamping plate (5) to rotate as the sliding frame (12) slides along the frame.

4. The dual-track electric energy meter automatic calibration intelligent transport vehicle as claimed in claim 3, characterized in that: The frame is fixedly connected with a lifting and telescopic rod (16), and the telescopic end of the lifting and telescopic rod (16) is fixedly connected to the lifting frame (9); the frame is fixedly connected with a vertical axis, and the lifting frame (9) can slide up and down along the vertical axis.

5. The dual-track electric energy meter automatic calibration intelligent transport vehicle as described in any one of claims 3 or 4, characterized in that: The clamping assembly comprises a driving rod (10) rotatably connected to the lifting frame (9), and the driving rod (10) is rotatably connected to the sliding frame (12); a sliding rod (11) is fixedly connected to the frame, and the sliding frame (12) can slide left and right along the sliding rod (11).

6. The dual-track electric energy meter automatic calibration intelligent transport vehicle as claimed in claim 5, characterized in that: The unfolding assembly comprises a driving frame (18) fixed to the frame, and a driving groove is provided on the driving frame (18); the clamping plate (5) is coaxially fixed with a folding rod (20) matched with the driving groove, and the folding rod (20) is rotatably connected with a roller (21) matched with the driving groove; the driving groove comprises a horizontally arranged unfolding locking groove (28), the unfolding locking groove (28) is connected to an inclined rotating groove (19), and one end of the rotating groove (19) away from the unfolding locking groove (28) is connected to a horizontally arranged folding locking groove (29).

7. The dual-track electric energy meter automatic calibration intelligent transport vehicle as described in any one of claims 1 or 5, characterized in that: The clamping plate (5) is coaxially fixedly connected with a driving bevel gear (22); a driven bevel gear (27) meshing with the driving bevel gear (22) is rotatably connected to the sliding frame (12); a spline shaft (26) is fixedly connected to the driven bevel gear (27); a spline cylinder (17) rotatably connected to the spline shaft (26); an input bevel gear (25) is fixedly connected to the spline cylinder (17); an output bevel gear (31) meshing with the input bevel gear (25); and a lifting assembly for driving the support plate (8) to move up and down is connected to the output bevel gear (31).

8. The dual-track electric energy meter automatic calibration intelligent transport vehicle as claimed in claim 7, characterized in that: The lifting assembly comprises a crank (23) coaxially fixedly connected to the output bevel gear (31); a connecting rod (24) is rotatably connected to the crank (23); the other end of the connecting rod (24) is rotatably connected to the support plate (8); a support rod (30) is fixedly connected to the support plate (8); and a through hole for guiding the support rod (30) is provided on the frame.

9. The dual-track electric energy meter automatic calibration intelligent transport vehicle as claimed in claim 3, characterized in that: The positioning structure comprises a bidirectional telescopic rod (13) fixedly connected to the lifting frame (9); a pair of telescopic ends of the bidirectional telescopic rod (13) are both fixedly connected to a positioning plate (3) for positioning the electric energy meter (4); a guide rod (15) is fixedly connected to the positioning plate (3); and a guide cylinder (14) is fixedly connected to the lifting frame (9) for guiding the guide rod (15).

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