Conveying device compatible with various specifications of electric energy meters and using method thereof

Abstract

The invention discloses a conveying device compatible with various specifications of electric energy meters and a using method of the conveying device. The conveying device comprises a conveying tray, a feeding mechanical arm, a discharging mechanical arm and an unlocking device; the feeding mechanical arm and the discharging mechanical arm are matched with the conveying tray at a feeding station and a discharging station respectively to complete automatic feeding and discharging operation of the electric energy meter, a containing groove is formed in the conveying tray, a limiting pressing hook driven by a spring is arranged in the containing groove, and the unlocking device comprises a jacking air cylinder, a jacking supporting plate and two switching air cylinders. When the conveying tray moves to a feeding station or a discharging station, the jacking air cylinder can enable the conveying tray to be separated from the conveying belt, meanwhile, the switching air cylinder can open the limiting pressing hook, and the mechanical arm can conveniently place the electric energy meter into the containing groove or grab the electric energy meter. According to the design, automatic feeding and discharging operation of electric energy meters with different widths can be automatically completed, and the grabbing position and the grabbing angle of the mechanical arm can be rapidly replaced through the rest stand.

Description

Technical Field

[0001] The present invention relates to a conveying device, and in particular to a conveying device compatible with electric energy meters of various specifications and a use method thereof. Background Art

[0002] In the manufacturing and power industries, the energy meter is a key instrument for measuring electricity consumption. The efficiency and accuracy of its production and testing processes are crucial to the power industry. Modern energy meter production or testing lines need to process thousands of energy meters every day. Therefore, the fully automatic conveying device is the most important link in the energy meter testing line.

[0003] However, with the rapid development of the power industry and technological advancement, the types and functions of electricity meters are becoming increasingly diverse, which means that assembly lines with the same functions often need to switch between three-phase electricity meters and terminal meters of different sizes. Since traditional tooling pallets can only transport a single type of electricity meter, currently only the tooling pallets can be replaced.

[0004] Although this method can use one assembly line to complete the automated assembly line operation of different types of electric energy meters, it still has the following defects:

[0005] 1. For automated assembly line operations, replacing tooling pallets is not easy to automate, increases production rhythm, and even causes line stoppage, greatly reducing production efficiency.

[0006] 2. Customizing special tooling pallets individually is costly, time-consuming, and inconvenient to maintain.

[0007] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of low production efficiency and high cost in the prior art, and to provide a transportation device with high production efficiency and low cost that is compatible with various specifications of electric energy meters and a method of using the same.

[0009] To achieve the above objectives, the technical solution of the present invention is:

[0010] A conveying device compatible with electric energy meters of various specifications and a method of using the same, the conveying device comprising: a conveying tray, a loading mechanical arm, a unloading mechanical arm and an unlocking device;

[0011] The conveying tray is arranged on the assembly line, and the assembly line is in transmission cooperation with the conveying tray. The loading mechanical arm and the unloading mechanical arm are both arranged on the side of the assembly line. The installation place of the loading mechanical arm is the loading station, and the installation place of the unloading mechanical arm is the unloading station. The assembly line is also provided with an unlocking device corresponding to the loading mechanical arm and the unloading mechanical arm, and the power output end at the top of the unlocking device is in transmission cooperation with the bottom of the limit pressure hook on the conveying tray;

[0012] At least one accommodating slot for accommodating an electric energy meter is provided on the top of the conveying tray, and a limiting pressure hook and a spring are provided on one side of the accommodating slot. One side of the limiting pressure hook is limitedly matched with the electric energy meter in the accommodating slot, and the other side of the limiting pressure hook is pressed tightly with the pressure hook fixing port in the conveying tray through a spring.

[0013] The assembly line at the loading robot arm or the unloading robot arm is provided with a shelf that cooperates with the robot arm. The shelf is set within the grasping range of the corresponding loading robot arm or the unloading robot arm. The storage surface of the shelf is inclined, and a storage tray that cooperates with the electric energy meter is set in the middle of the storage surface.

[0014] The assembly line includes two conveyor belts parallel to each other, and the conveyor tray and the unlocking device are both arranged between the two conveyor belts;

[0015] The conveying pallet includes a pallet body and a conveying frame. The top of the pallet body is provided with a receiving slot for accommodating an electric energy meter. The bottom of the pallet body is connected to the top of the conveying frame as an integrated structure. The two sides of the bottom of the conveying frame are respectively limited by two conveyor belts.

[0016] Two accommodating grooves are provided on the top of the conveying tray, and the two accommodating grooves are symmetrical to each other. Limiting pressure hooks and springs are provided on opposite sides of the two accommodating grooves, and the limiting pressure hooks cooperate with the side limiting parts of the electric energy meter; an electric energy meter entrance and exit are provided on the same side of the two accommodating grooves, and when the electric energy meter is set in the accommodating groove, the interface of the electric energy meter is oriented in the same direction as the opening direction of the entrance and exit of the electric energy meter.

[0017] A plurality of stopper pressure hooks and a plurality of springs are arranged in the accommodating groove.

[0018] The unlocking device includes a lifting cylinder, a lifting plate and two switching cylinders. The cylinder seat of the lifting cylinder is fixed on the ground, the lifting plate is fixed on the end of the telescopic rod of the lifting cylinder in the horizontal direction, the cylinder seats of the two switching cylinders are fixed on the top of the lifting plate in the horizontal direction, and the telescopic rods of the two switching cylinders are respectively matched with each block pressure hook in a accommodating groove on the conveying pallet.

[0019] An unlocking plate is fixedly arranged on the telescopic rod of the switching cylinder, and the unlocking plate is transmission-coordinated with all the block pressure hooks in the corresponding accommodating groove.

[0020] The assembly line also includes a detection device. A detection device is respectively arranged on the loading station and the unloading station. The detection head of the detection device is arranged facing the conveying tray on the assembly line.

[0021] A method for using a transmission device compatible with electric energy meters of various specifications, the method comprising the following steps:

[0022] S1, the assembly line starts, the assembly line begins to work, the conveyor belt drives the conveyor pallet to run along the assembly line, and when the conveyor pallet runs to the loading station, it enters S2;

[0023] S2, loading of the electric energy meter. When the detection device set on the loading station detects the conveying tray, the unlocking device corresponding to the loading station starts to work, and the telescopic rod of the lifting cylinder extends, so that the lifting plate lifts the conveying tray. When the lifting cylinder extends to the set length, the two switching cylinders start to work at the same time, and the telescopic rod of the switching cylinder extends, driving the corresponding block pressure hook to move. When the telescopic rod of the switching cylinder extends to the set length, the loading robot arm starts to work, and the mechanical claw of the loading robot arm grabs the side of the electric energy meter, so that its upper surface is parallel to the storage surface and places it on the shelf, and then the loading robot arm releases Open, then the mechanical claw of the loading robot arm grabs the upper surface of the electric energy meter and places the electric energy meter in the accommodating groove, at this time, the telescopic rod of the switching cylinder is shortened, and the block pressure hook cooperates with the electric energy meter limit under the drive of its corresponding spring. When the telescopic rod of the switching cylinder is shortened to the minimum stroke, the telescopic rod of the lifting cylinder begins to shorten, so that the conveying pallet descends. When the conveying pallet is placed on the conveyor belt, the telescopic rod of the lifting cylinder continues to shorten and disengages from the conveying pallet. When the telescopic rod of the lifting cylinder disengages from the conveying pallet, the conveying pallet is driven by the conveyor belt to run along the assembly line. When the conveying pallet runs to the unloading station, enter S3;

[0024] S3, unloading of the electric energy meter. When the detection device arranged on the unloading station detects the conveying tray, the unlocking device corresponding to the unloading station starts to work, and the telescopic rod of the jacking cylinder is extended so that the jacking plate lifts the conveying tray. When the jacking cylinder is extended to the set length, the two switching cylinders start to work at the same time, and the telescopic rod of the switching cylinder is extended to disengage the block pressure hook from the corresponding electric energy meter. When the telescopic rod of the switching cylinder is extended to the set length, the unloading robot arm starts to work, and the mechanical claw of the unloading robot arm grabs the upper surface of the electric energy meter to take the electric energy meter out of the accommodating slot with its side facing upwards. Place it on the shelf, then release the unloading robot arm, and then the mechanical claw of the unloading robot arm grabs the side of the electric energy meter and transfers it to the next workstation. At this time, the telescopic rod of the switching cylinder is shortened, and the block pressure hook returns to the initial position under the drive of its corresponding spring. When the telescopic rod of the switching cylinder is shortened to the minimum stroke, the telescopic rod of the lifting cylinder begins to shorten, causing the conveyor pallet to drop. After the conveyor pallet is placed on the conveyor belt, the telescopic rod of the lifting cylinder continues to shorten and disengage from the conveyor pallet. When the telescopic rod of the lifting cylinder disengages from the conveyor pallet, the conveyor pallet is driven by the conveyor belt to run along the assembly line.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In a conveying device compatible with various specifications of electric energy meters of the present invention, a loading and unloading mechanical arm is arranged on the side of the assembly line, and the loading and unloading mechanical arm cooperates with the conveying tray at the loading station and the unloading station to complete the automatic loading and unloading operations of the electric energy meter, respectively. A receiving slot is provided on the conveying tray, and a spring-driven limit pressure hook is arranged in the receiving slot, and the limit pressure hook makes the width of the electric energy meter corresponding to the receiving slot variable. Therefore, this design can automatically complete the automatic loading and unloading operations of electric energy meters of different widths, effectively improving production efficiency.

[0027] 2. In a conveying device compatible with various specifications of electric energy meters of the present invention, a shelf is provided within the grasping range of the loading mechanical arm or the unloading mechanical arm, the storage surface of the shelf is inclined, and a shelf support plate matching the electric energy meter is provided in the middle of the storage surface. When the electric energy meter is automatically loaded and unloaded, the mechanical arm can temporarily place the electric energy meter on the shelf, which is convenient for the mechanical arm to change the grasping position and grasping angle, so that the conveying device can complete more complex loading and unloading operations. Therefore, this design can enable the mechanical arm to quickly change the grasping position and grasping angle through the shelf, effectively expanding the application range of the conveying device.

[0028] 3. In a conveying device compatible with various specifications of electric energy meters of the present invention, two accommodating slots are provided on the top of the conveying tray, and an electric energy meter entrance and exit are provided on the same side of the two accommodating slots, so that the accommodating slots can be adapted to electric energy meters of different lengths, and multiple block pressure hooks and multiple springs are provided in the accommodating slots, which can limit electric energy meters of different lengths. Therefore, this design can adapt electric energy meters of different specifications through a conveying tray, effectively reducing the production cost of the conveying tray.

[0029] 4. In the method for using a conveying device compatible with various specifications of electric energy meters of the present invention, the conveying tray and the unlocking device are both arranged between two conveyor belts, and the unlocking device includes a lifting cylinder, a lifting support plate and two switching cylinders. When the conveying tray moves to the loading station or the unloading station, the lifting cylinder can make the conveying tray separate from the conveyor belt, and at the same time, the switching cylinder can open the limit pressure hook, so that the robot arm can put the electric energy meter into the receiving slot or grab the electric energy meter from the receiving slot. When the robot arm needs to change the grabbing position or angle, the electric energy meter can be temporarily placed on the shelf to quickly complete the replacement. Therefore, the present design can cooperate with the shelf through the unlocking device to quickly complete the loading and unloading operations of the electric energy meter, and effectively improve the automation degree of the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle loading station.

[0032] Figure 3 yes Figure 1 Side view of the loading and unloading station.

[0033] Figure 4 yes Figure 1 Schematic diagram of the structure of the conveyor tray.

[0034] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle accommodating tank.

[0035] Figure 6 yes Figure 1 Schematic diagram of the structure of the middle spring.

[0036] Figure 7 yes Figure 1 Schematic diagram of the structure of the unlocking device.

[0037] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle shelf.

[0038] In the figure: assembly line 1, loading station 11, unloading station 12, conveyor belt 13, conveyor pallet 2, accommodating groove 21, limit pressure hook 22, spring 23, pallet body 24, conveying frame 25, electric energy meter entrance and exit 26, loading robot arm 3, unloading robot arm 4, unlocking device 5, lifting cylinder 51, lifting support plate 52, switching cylinder 53, unlocking plate 54, shelf rack 6, storage surface 61, shelf support plate 62. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] See also Figures 1 to 8 :

[0041] The principle of the present invention is described as follows:

[0042] In this design, a plurality of loading stations 11 and unloading stations 12 can be arranged on the assembly line 1, and different loading stations 11 and unloading stations 12 perform loading and unloading processes for electric energy meters of different specifications;

[0043] In this design, the layout of the loading station 11 and the unloading station 12 are the same, and the structure of the loading robot arm 3 and the unloading robot arm 4 are the same.

[0044] Embodiment 1:

[0045] A conveying device compatible with electric energy meters of various specifications and a method for using the same, the conveying device comprising: a conveying tray 2, a loading robot arm 3, a unloading robot arm 4 and an unlocking device 5; the conveying tray 2 is arranged on an assembly line 1, the assembly line 1 and the conveying tray 2 are transmission-coordinated, the loading robot arm 3 and the unloading robot arm 4 are both arranged on the side of the assembly line 1, the loading robot arm 3 is installed at a loading station 11, the unloading robot arm 4 is installed at a unloading station 12, the assembly line 1 is also provided with an unlocking device 5 corresponding to the loading robot arm 3 and the unloading robot arm 4, the power output end at the top of the unlocking device 5 is transmission-coordinated with the bottom of the limit pressure hook 22 on the conveying tray 2; the conveying At least one receiving slot 21 for accommodating an electric energy meter is provided on the top of the tray 2, and a limit pressure hook 22 and a spring 23 are provided on one side of the receiving slot 21, and one side of the limit pressure hook 22 is limitedly matched with the electric energy meter in the receiving slot 21, and the other side of the limit pressure hook 22 is pressed and matched with the pressure hook fixing port in the conveying tray 2 through the spring 23; the assembly line 1 at the loading robot arm 3 or the unloading robot arm 4 is provided with a shelf 6 matched with the robot arm, and the shelf 6 is arranged within the grasping range of the corresponding loading robot arm 3 or the unloading robot arm 4, and the storage surface 61 of the shelf 6 is inclined, and a storage tray 62 matched with the electric energy meter is provided in the middle of the storage surface 61; the assembly line 1 at the loading robot arm 3 or the unloading robot arm 4 is provided with a shelf 6 matched with the robot arm, and the shelf 6 is arranged within the grasping range of the corresponding loading robot arm 3 or the unloading robot arm 4, and the storage surface 61 of the shelf 6 is inclined, and a storage tray 62 matched with the electric energy meter is provided in the middle of the storage surface 61; The waterline 1 includes two conveyor belts 13 parallel to each other, and the conveyor tray 2 and the unlocking device 5 are both arranged between the two conveyor belts 13; the conveyor tray 2 includes a tray body 24 and a conveying frame 25, and a receiving groove 21 for accommodating an electric energy meter is provided on the top of the tray body 24, and the bottom of the tray body 24 is connected to the top of the conveying frame 25 as an integral structure, and the two sides of the bottom of the conveying frame 25 are respectively limited by the two conveyor belts 13; the top of the conveyor tray 2 is provided with two receiving grooves 21, and the two receiving grooves 21 are symmetrical to each other, and the opposite sides of the two receiving grooves 21 are provided with a limited pressure hook 22 and a spring 23, and the limited pressure hook 22 is limited to the side of the electric energy meter. The two accommodating grooves 21 are respectively provided with an electric energy meter entrance and exit 26 on the same side, and when the electric energy meter is arranged in the accommodating groove 21, the interface of the electric energy meter faces the same direction as the opening direction of the electric energy meter entrance and exit 26; the unlocking device 5 comprises a lifting cylinder 51, a lifting support plate 52 and two switching cylinders 53, the cylinder seat of the lifting cylinder 51 is fixedly arranged on the ground, the lifting support plate 52 is fixedly arranged on the end of the telescopic rod of the lifting cylinder 51 in the horizontal direction, the cylinder seats of the two switching cylinders 53 are fixedly arranged on the top of the lifting support plate 52 in the horizontal direction, and the telescopic rods of the two switching cylinders 53 are respectively matched with each block pressure hook 23 in a accommodating groove 21 on the conveying tray 2 for transmission.

[0046] A method for using a transmission device compatible with electric energy meters of various specifications, the method comprising the following steps:

[0047] S1, the assembly line starts, the assembly line 1 starts to work, the conveyor belt 13 drives the conveyor tray 2 to run along the assembly line 1, and when the conveyor tray 2 runs to the loading station 11, it enters S2;

[0048] S2, loading of the electric energy meter. When the detection device arranged on the loading station 11 detects the conveying tray 2, the unlocking device 5 corresponding to the loading station 11 starts to work, and the telescopic rod of the lifting cylinder 51 is extended, so that the lifting support plate 52 lifts the conveying tray 2. When the lifting cylinder 51 is extended to the set length, the two switching cylinders 53 start to work at the same time, and the telescopic rod of the switching cylinder 53 is extended, driving the corresponding block pressure hook 23 to move. When the telescopic rod of the switching cylinder 53 is extended to the set length, the loading robot arm 3 starts to work, and the mechanical claw of the loading robot arm 3 grabs the side of the electric energy meter, so that its upper surface is parallel to the storage surface 61 and places it on the shelf 6, and then the loading robot arm 3 is released. , then the mechanical claw of the loading robot arm 3 grabs the upper surface of the electric energy meter and places the electric energy meter in the accommodating groove 21, at this time, the telescopic rod of the switching cylinder 53 is shortened, and the block pressure hook 23 is driven by its corresponding spring 24 to cooperate with the electric energy meter limit, when the telescopic rod of the switching cylinder 53 is shortened to the minimum stroke, the telescopic rod of the lifting cylinder 51 begins to shorten, so that the conveying tray 2 descends, and when the conveying tray 2 is placed on the conveyor belt 13, the telescopic rod of the lifting cylinder 51 continues to shorten and disengages from the conveying tray 2, when the telescopic rod of the lifting cylinder 51 disengages from the conveying tray 2, the conveying tray 2 is driven by the conveyor belt 13 to run along the assembly line 1, and when the conveying tray 2 runs to the unloading station 12, enter S3;

[0049] S3, unloading of the electric energy meter. When the detection device arranged on the unloading station 12 detects the conveying tray 2, the unlocking device 5 corresponding to the unloading station 12 starts to work, and the telescopic rod of the lifting cylinder 51 is extended, so that the lifting support plate 52 lifts the conveying tray 2. When the lifting cylinder 51 is extended to the set length, the two switching cylinders 53 start to work at the same time, and the telescopic rod of the switching cylinder 53 is extended to disengage the block pressure hook 23 from the electric energy meter corresponding to it. When the telescopic rod of the switching cylinder 53 is extended to the set length, the unloading robot arm 4 starts to work, and the mechanical claw of the unloading robot arm 4 grabs the upper surface of the electric energy meter and takes the electric energy meter out of the accommodating groove 21 with its side facing upward. It is placed on the shelf 6, and then the unloading robot arm 4 is released, and then the mechanical claw of the unloading robot arm 4 grabs the side of the electric energy meter and transfers it to the next workstation. At this time, the telescopic rod of the switching cylinder 53 is shortened, and at this time, the block pressure hook 23 returns to the initial position driven by its corresponding spring 24. When the telescopic rod of the switching cylinder 53 is shortened to the minimum stroke, the telescopic rod of the lifting cylinder 51 begins to shorten, causing the conveying pallet 2 to descend. When the conveying pallet 2 is placed on the conveyor belt 13, the telescopic rod of the lifting cylinder 51 continues to shorten and disengage from the conveying pallet 2. When the telescopic rod of the lifting cylinder 51 disengages from the conveying pallet 2, the conveying pallet 2 is driven by the conveyor belt 13 to run along the assembly line 1.

[0050] Embodiment 2:

[0051] Embodiment 2 is substantially the same as Embodiment 1, except that:

[0052] A plurality of block pressure hooks 23 and a plurality of springs 24 are arranged in the receiving groove 21 ; an unlocking plate 54 is fixedly arranged on the telescopic rod of the switching cylinder 53 , and the unlocking plate 54 is in transmission cooperation with all the block pressure hooks 23 in the corresponding receiving groove 21 .

[0053] Embodiment 3:

[0054] Embodiment 3 is substantially the same as Embodiment 2, except that:

[0055] The assembly line 1 further comprises a detection device. A detection device is disposed on each of the loading station 11 and the unloading station 12 . The detection head of the detection device is disposed facing the conveying tray 2 on the assembly line 1 .

[0056] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A transmission device compatible with various specifications of electric energy meters, characterized in that: The conveying device comprises: a conveying tray (2), a loading mechanical arm (3), a unloading mechanical arm (4) and an unlocking device (5); The conveying tray (2) is arranged on the assembly line (1), and the assembly line (1) and the conveying tray (2) are in transmission cooperation. The loading mechanical arm (3) and the unloading mechanical arm (4) are both arranged on the side of the assembly line (1). The installation location of the loading mechanical arm (3) is the loading station (11), and the installation location of the unloading mechanical arm (4) is the unloading station (12). The assembly line (1) is also provided with an unlocking device (5) corresponding to the loading mechanical arm (3) and the unloading mechanical arm (4), and the power output end at the top of the unlocking device (5) is in transmission cooperation with the bottom of the limit pressure hook (22) on the conveying tray (2); The top of the conveying tray (2) is provided with at least one receiving groove (21) for accommodating an electric energy meter, and one side of the receiving groove (21) is provided with a limit pressure hook (22) and a spring (23), one side of the limit pressure hook (22) is limitedly matched with the electric energy meter in the receiving groove (21), and the other side of the limit pressure hook (22) is pressed and matched with a pressure hook fixing port in the conveying tray (2) through the spring (23).

2. According to claim 1, a transmission device compatible with electric energy meters of various specifications is characterized in that: The assembly line (1) at the loading robot arm (3) or the unloading robot arm (4) is provided with a shelf (6) matched with the robot arm; the shelf (6) is arranged within the grasping range of the corresponding loading robot arm (3) or the unloading robot arm (4); the storage surface (61) of the shelf (6) is arranged at an angle; and a storage support plate (62) matched with an electric energy meter is arranged in the middle of the storage surface (61).

3. The transmission device compatible with various specifications of electric energy meters according to claim 2 is characterized in that: The assembly line (1) comprises two conveyor belts (13) parallel to each other, and the conveyor tray (2) and the unlocking device (5) are both arranged between the two conveyor belts (13); The conveying tray (2) comprises a tray body (24) and a conveying frame (25); a receiving groove (21) for accommodating an electric energy meter is provided on the top of the tray body (24); the bottom of the tray body (24) and the top of the conveying frame (25) are connected to form an integral structure; and two sides of the bottom of the conveying frame (25) are respectively limitedly matched with two conveyor belts (13).

4. The transmission device compatible with various specifications of electric energy meters according to claim 3 is characterized in that: Two receiving grooves (21) are provided on the top of the conveying tray (2), the two receiving grooves (21) are symmetrical to each other, and limiting pressure hooks (22) and springs (23) are provided on opposite sides of the two receiving grooves (21), and the limiting pressure hooks (22) cooperate with the side limit of the electric energy meter; an electric energy meter entrance and exit (26) is provided on the same side of the two receiving grooves (21), and when the electric energy meter is arranged in the receiving groove (21), the interface of the electric energy meter faces the same direction as the opening direction of the electric energy meter entrance and exit (26).

5. The transmission device compatible with various specifications of electric energy meters according to claim 4 is characterized in that: A plurality of stopper pressure hooks (23) and a plurality of springs (24) are arranged in the accommodating groove (21).

6. A transmission device compatible with electric energy meters of various specifications according to any one of claims 3 to 5, characterized in that: The unlocking device (5) comprises a lifting cylinder (51), a lifting support plate (52) and two switching cylinders (53); the cylinder seat of the lifting cylinder (51) is fixedly arranged on the ground; the lifting support plate (52) is fixedly arranged on the end of the telescopic rod of the lifting cylinder (51) in the horizontal direction; the cylinder seats of the two switching cylinders (53) are fixedly arranged on the top of the lifting support plate (52) in the horizontal direction; the telescopic rods of the two switching cylinders (53) are respectively matched with each block pressure hook (23) in a receiving groove (21) on the conveying tray (2).

7. The transmission device compatible with various specifications of electric energy meters according to claim 6 is characterized in that: An unlocking plate (54) is fixedly provided on the telescopic rod of the switching cylinder (53), and the unlocking plate (54) is in transmission cooperation with all the block pressing hooks (23) in its corresponding accommodation groove (21).

8. The transmission device compatible with various specifications of electric energy meters according to claim 7 is characterized in that: The assembly line (1) further comprises a detection device, wherein each of the loading station (11) and the unloading station (12) is provided with a detection device, and the detection head of the detection device is arranged facing the conveying tray (2) on the assembly line (1).

9. A method for using the transmission device compatible with various specifications of electric energy meters according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: S1, the assembly line starts, the assembly line (1) starts to work, the conveyor belt (13) drives the conveyor tray (2) to run along the assembly line (1), and when the conveyor tray (2) runs to the loading station (11), it enters S2; S2, loading of the electric energy meter. When the detection device arranged on the loading station (11) detects the conveying tray (2), the unlocking device (5) corresponding to the loading station (11) starts to work, and the telescopic rod of the lifting cylinder (51) is extended, so that the lifting support plate (52) lifts the conveying tray (2). When the lifting cylinder (51) is extended to a set length, the two switching cylinders (53) start to work at the same time, and the telescopic rod of the switching cylinder (53) is extended, driving the corresponding block pressing hook (23) to move. When the telescopic rod of the switching cylinder (53) is extended to a set length, the loading robot arm (3) starts to work, and the mechanical claw of the loading robot arm (3) grabs the side of the electric energy meter, so that its upper surface is parallel to the storage surface (61) and places it on the shelf (6). Then the loading robot arm (3) is released, and its The mechanical claw of the rear loading mechanical arm (3) grabs the upper surface of the electric energy meter and places the electric energy meter in the accommodating groove (21). At this time, the telescopic rod of the switching cylinder (53) is shortened. At this time, the block pressure hook (23) cooperates with the electric energy meter under the drive of its corresponding spring (24). When the telescopic rod of the switching cylinder (53) is shortened to the minimum stroke, the telescopic rod of the lifting cylinder (51) begins to shorten, so that the conveying pallet (2) descends. When the conveying pallet (2) is placed on the conveyor belt (13), the telescopic rod of the lifting cylinder (51) continues to shorten and disengages from the conveying pallet (2). When the telescopic rod of the lifting cylinder (51) disengages from the conveying pallet (2), the conveying pallet (2) is driven by the conveyor belt (13) to run along the assembly line (1). When the conveying pallet (2) runs to the unloading station (12), it enters S3; S3, unloading of the electric energy meter. When the detection device arranged on the unloading station (12) detects the conveying tray (2), the unlocking device (5) corresponding to the unloading station (12) starts to work, and the telescopic rod of the lifting cylinder (51) is extended, so that the lifting support plate (52) lifts the conveying tray (2). When the lifting cylinder (51) is extended to a set length, the two switching cylinders (53) start to work at the same time, and the telescopic rod of the switching cylinder (53) is extended, so that the block pressure hook (23) is separated from the corresponding electric energy meter. When the telescopic rod of the switching cylinder (53) is extended to a set length, the unloading mechanical arm (4) starts to work, and the mechanical claw of the unloading mechanical arm (4) grabs the upper surface of the electric energy meter to take the electric energy meter out of the accommodating groove (21) and places it with its side facing upward. The conveyor tray (2) is moved to the shelf (6), and then the unloading mechanical arm (4) is released. Thereafter, the mechanical claw of the unloading mechanical arm (4) grabs the side of the electric energy meter and transfers it to the next station. At this time, the telescopic rod of the switching cylinder (53) is shortened. At this time, the block pressure hook (23) returns to the initial position under the drive of its corresponding spring (24). When the telescopic rod of the switching cylinder (53) is shortened to the minimum stroke, the telescopic rod of the lifting cylinder (51) begins to shorten, so that the conveying tray (2) descends. When the conveying tray (2) is placed on the conveyor belt (13), the telescopic rod of the lifting cylinder (51) continues to shorten and disengages from the conveying tray (2). When the telescopic rod of the lifting cylinder (51) disengages from the conveying tray (2), the conveying tray (2) is driven by the conveyor belt (13) to run along the assembly line (1).

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