Driving assembly for calibrating device, calibrating device and control method of driving assembly

Abstract

The invention relates to the technical field of electric energy meter verification, in particular to a driving assembly for a verification device and the verification device. The driving assembly for the calibrating device comprises a cylinder body, a first piston rod and a second piston rod, a first air chamber and a second air chamber which are separated from each other are arranged in the cylinder body, a first piston is arranged at one end of the first piston rod, the first piston is arranged in the first air chamber, and the first piston is configured to move in the first air chamber after being pressed; one end of the second piston rod is provided with a second piston, the second piston is arranged in the second air chamber, and the second piston is configured to move in the second air chamber after being pressed, so that the second piston rod extends out of or retracts into the second air chamber. When the first piston rod extends out of the first air chamber, the second piston rod retracts into the second air chamber. The calibrating device comprises the driving assembly for the calibrating device. The driving assembly and the calibrating device are simple in structure.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meter calibration, and in particular to a driving component for a calibration device, a calibration device and a control method for the driving component. Background Art

[0002] In the related art, in order to improve the applicability of the calibration device, the calibration device can usually be matched with and installed with multiple types of electric energy meters. For example, the calibration device can be compatible with single-phase electric energy meters, three-phase electric energy meters, etc. When calibrating single-phase electric energy meters and three-phase electric energy meters, the corresponding auxiliary probes need to be extended or retracted.

[0003] At present, the extension or retraction of the auxiliary probe of the single-phase electric energy meter and the auxiliary probe of the three-phase electric energy meter requires the installation of two driving cylinders with the same cylinder diameter and the same stroke, and the two driving cylinders are simultaneously and reversely moved by the reverse connection of two control valves or four gas paths of one control valve. The above structure not only requires sufficient installation space, but also has a complex pipeline arrangement, and the demand for other auxiliary components such as pneumatic joints required by the pneumatic actuator is also doubled, which has an adverse effect on the compact layout of the overall device and brings inconvenience to the later maintenance, repair and maintenance of the device. Summary of the invention

[0004] The main purpose of the present invention is to propose a driving assembly for a calibration device, a calibration device and a control method for the driving assembly, aiming to solve the technical problems that the existing driving assembly for the calibration device has a complex structure, many supporting parts and is not conducive to maintenance and repair.

[0005] To achieve the above object, the present invention proposes a driving assembly for a verification device, comprising:

[0006] A cylinder body, wherein a first air chamber and a second air chamber separated from each other are arranged in the cylinder body;

[0007] a first piston rod, one end of which is provided with a first piston, the other end of which is provided with a first auxiliary probe set, the first piston being disposed in the first air chamber, the first piston being configured to be able to move in the first air chamber after being pressurized so that the first piston rod extends out of or retracts into the first air chamber;

[0008] a second piston rod, one end of which is provided with a second piston, the other end of which is provided with a second auxiliary probe set, the second piston being disposed in the second air chamber, the second piston being configured to be able to move in the second air chamber after being pressurized so that the second piston rod extends out of or retracts into the second air chamber;

[0009] The first piston divides the first air chamber into a first air cavity and a second air cavity, the first piston rod is disposed in the first air cavity, the second piston divides the second air chamber into a third air cavity and a fourth air cavity, and the second piston rod is disposed in the third air cavity;

[0010] A connecting hole connecting the first air chamber and the third air chamber is provided in the cylinder body, so that when the first piston rod is extended in the first air chamber, the second piston rod is retracted into the second air chamber, or when the second piston rod is extended in the second air chamber, the first piston rod is retracted into the first air chamber.

[0011] In some embodiments, the cylinder body is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole is connected to the second air cavity, and the second air inlet hole is connected to the fourth air cavity;

[0012] The drive assembly comprises:

[0013] a first air pipe, the first air pipe being connected to the first air inlet and used for supplying or exhausting air to the second air cavity;

[0014] A second air pipe, the second air pipe is connected to the second air inlet hole, and is used for supplying or exhausting air to the fourth air cavity.

[0015] In some embodiments, the driving assembly further comprises a solenoid valve, and an end of the first air pipe away from the first air inlet hole and an end of the second air pipe away from the second air inlet hole are both connected to the solenoid valve;

[0016] Wherein, the solenoid valve has multiple state positions, so that the first air pipe and the second air pipe have multiple air path states.

[0017] In some embodiments, the cylinder body includes an intake side wall and a non-intake side wall, the intake side wall is provided with the first intake hole and the second intake hole, and the non-intake side wall is provided with a mounting hole.

[0018] In some embodiments, a first sealing ring is sleeved on the outer circumference of the first piston, and a second sealing ring is sleeved on the outer circumference of the second piston.

[0019] In some embodiments, a first buffer pad is disposed at one end of the first air chamber close to the first piston, and a second buffer pad is disposed at one end of the second air chamber close to the second piston.

[0020] In some embodiments, the first auxiliary probe set includes a first connecting plate and a first auxiliary probe, the first connecting plate is connected to the first piston rod, the first auxiliary probe is arranged on a side of the first connecting plate away from the first piston rod, and the first connecting plate is driven by the first piston rod to extend or retract the first auxiliary probe;

[0021] The second auxiliary probe group includes a second connecting plate and a second auxiliary probe. The second connecting plate is connected to the second piston rod. The second auxiliary probe is arranged on a side of the second connecting plate away from the second piston rod. The second connecting plate is driven by the second piston rod to extend or retract the second auxiliary probe.

[0022] In some embodiments, the first connecting plate is provided with a first limiting groove, the first limiting groove is suitable for inserting a first limiting member, and when the first auxiliary probe is extended, the first limiting member is inserted into the first limiting groove;

[0023] The second connecting plate is provided with a second limiting groove, and the second limiting groove is suitable for inserting a second limiting member. When the second auxiliary probe is extended, the second limiting member is inserted into the second limiting groove.

[0024] In some embodiments, the drive assembly comprises:

[0025] a first clamping member, wherein the first clamping member is configured to be able to move toward or away from the first piston rod, and when the first auxiliary probe is extended, the first clamping member moves toward the first piston rod to clamp the first piston rod;

[0026] The second clamping member is configured to be able to move toward or away from the second piston rod. When the second auxiliary probe is extended, the second clamping member moves toward the second piston rod to clamp the second piston rod.

[0027] Correspondingly, the present invention also proposes a verification device, comprising:

[0028] The driving assembly for the verification device described in any of the above embodiments, wherein the driving assembly comprises a first auxiliary probe group and a second auxiliary probe group;

[0029] The tray is used to install an electric energy meter, and the first auxiliary probe group and the second auxiliary probe group can move toward or away from the electric energy meter to realize the calibration of the electric energy meter.

[0030] Correspondingly, the present invention further proposes a control method for a driving component, the control method is used to drive the driving component for the verification device described in any of the above embodiments, comprising:

[0031] Filling the second air cavity with gas so that the air pressure in the second air cavity is greater than the air pressure in the first air cavity, and the first piston can move toward the first air cavity so that the first piston rod drives the first auxiliary probe group to extend out of the first air chamber;

[0032] The compressed gas in the first air cavity enters the third air cavity through the connecting hole, so that the air pressure in the third air cavity is greater than the air pressure in the fourth air cavity. The second piston can move toward the fourth air cavity, so that the second piston rod drives the second auxiliary probe group to retract into the second air chamber.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] In the technical solution of the present invention, the first air cavity, the second air cavity, the third air cavity and the fourth air cavity can all be filled with gas, so that the drive assembly is a fully pneumatic drive mode. When it is necessary to extend the first auxiliary probe group and retract the second auxiliary probe group, gas can be filled into the second air cavity so that the air pressure in the second air cavity is higher than the air pressure in the first air cavity. At this time, the gas will push the first piston to move in the direction close to the first air cavity, and the first piston will drive the first piston rod to extend in the first air chamber, so as to achieve the extension of the first auxiliary probe group. At the same time, since the first air cavity and the third air cavity are interconnected through the connecting hole, the compressed gas in the first air cavity will flow into the third air cavity, so that the air pressure in the third air cavity is higher than the air pressure in the fourth air cavity. At this time, the gas will push the second piston to move in the direction close to the fourth air cavity, and the second piston will drive the second piston rod to retract in the second air chamber, so as to achieve the retraction of the second auxiliary probe group. Finally, the calibration of the electric energy meter by the first auxiliary probe group is completed.

[0035] Similarly, when it is necessary to retract the first auxiliary probe group and extend the second auxiliary probe group, gas can be filled into the fourth air cavity so that the air pressure in the fourth air cavity is higher than the air pressure in the third air cavity. At this time, the gas will push the second piston to move in the direction close to the third air cavity, and the second piston will drive the second piston rod to extend in the second air chamber, thereby extending the second auxiliary probe group. At the same time, since the third air cavity and the first air cavity are interconnected through the connecting hole, the compressed gas in the third air cavity will flow into the first air cavity, so that the air pressure in the first air cavity is higher than the air pressure in the second air cavity. At this time, the gas will push the first piston to move in the direction close to the second air cavity, and the first piston will drive the first piston rod to retract in the first air chamber, thereby retracting the first auxiliary probe group. Finally, the calibration of the electric energy meter by the second auxiliary probe group is completed.

[0036] The present invention provides a dual-piston rod, dual-linkage drive assembly, in which when one piston rod moves, the other piston rod can move simultaneously and in the opposite direction, replacing the single-function application scenario in existing applications that requires two single-rod double-acting cylinders to realize the simultaneous and unidirectional movement of two piston rods, thereby facilitating meeting the calibration requirements of different electric energy meters. The above-mentioned drive assembly has a simple structure, saves the number of control valves and simplifies the complexity of air pipe wiring, and effectively reduces the volume, saves installation space, and reduces production costs. In addition, inert gas can be filled into the first air cavity, the second air cavity, the third air cavity, and the fourth air cavity, so that the drive assembly provided by the present invention is environmentally friendly and pollution-free, and prevents the leakage of harmful substances.

[0037] According to the type of electric energy meter to be calibrated, the driving component can drive the corresponding auxiliary probe group to extend to the front end calibration position, and drive the remaining auxiliary probe groups to retract to the rear end position, so as to be compatible with the calibration of different types of electric energy meters. The application of the driving component for the calibration device can simplify the structure of the calibration device, save the number of control valves, and reduce the complexity of the air pipe wiring, which is conducive to saving the installation space of the calibration device and reducing the production cost of the calibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 A state diagram of a driving assembly for a testing device provided by an embodiment of the present invention when both the first auxiliary probe set and the second auxiliary probe set are retracted;

[0040] Figure 2 A state diagram of a driving assembly for a testing device provided by an embodiment of the present invention when a first auxiliary probe set is extended and a second auxiliary probe set is retracted;

[0041] Figure 3 A state diagram of a driving assembly for a testing device provided by an embodiment of the present invention when a first auxiliary probe set is retracted and a second auxiliary probe set is extended;

[0042] Figure 4 A state diagram of a driving assembly for a testing device provided in an embodiment of the present invention when a first piston rod is extended and a second piston rod is retracted;

[0043] Figure 5A state diagram of a driving assembly for a testing device provided in an embodiment of the present invention when a first piston rod is retracted and a second piston rod is extended;

[0044] Figure 6 A state diagram of a first piston rod and a second piston rod in a driving assembly for a testing device provided in an embodiment of the present invention when both the first piston rod and the second piston rod are retracted;

[0045] Figure 7 A control wiring schematic diagram of a drive assembly for a calibration device provided in one embodiment of the present invention.

[0046] Description of Figure Numbers:

[0047] 10. Drive components;

[0048] 100, cylinder body;

[0049] 110, first air chamber; 120, second air chamber; 130, communication hole; 140, air intake side wall; 150, non-air intake side wall;

[0050] 111, first air cavity; 112, second air cavity; 113, first buffer pad;

[0051] 121, third air cavity; 122, fourth air cavity; 123, second buffer pad;

[0052] 141, first air inlet; 142, second air inlet;

[0053] 151, mounting hole;

[0054] 200, first piston rod;

[0055] 210, a first piston; 220, a first auxiliary probe group;

[0056] 211, first sealing ring;

[0057] 221, first connecting plate; 222, first auxiliary probe; 223, slide groove;

[0058] 300, second piston rod;

[0059] 310, second piston; 320, second auxiliary probe group;

[0060] 311, second sealing ring;

[0061] 321, second connecting plate; 322, second auxiliary probe; 323, slide rail;

[0062] 400, first trachea;

[0063] 500, second trachea;

[0064] 600, solenoid valve;

[0065] 610, first state bit; 620, second state bit; 630, third state bit;

[0066] X, first direction;

[0067] Y, second direction.

[0068] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0071] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0072] In the related art, in order to improve the applicability of the calibration device, the calibration device can usually be matched with and installed with multiple types of electric energy meters. For example, the calibration device can be compatible with single-phase electric energy meters, three-phase electric energy meters, etc. When calibrating single-phase electric energy meters and three-phase electric energy meters, the corresponding auxiliary probes need to be extended or retracted.

[0073] Exemplarily, for example, when calibrating a single-phase smart energy meter and a three-phase smart energy meter respectively, the corresponding auxiliary probe is extended to the front calibration position while the other auxiliary probe needs to be retracted to the rear position. When calibrating a single-phase IoT meter and a three-phase IoT meter respectively, after the corresponding auxiliary probe is extended to the front calibration position and the other auxiliary probe is retracted to the rear position, the driving cylinder is exhausted through the control valve so that the driving cylinder is in a resistance-free state. When the calibration system is connected, the corresponding auxiliary probe is pushed to the rear position by the reaction force when the energy meter being tested is connected, so as to realize the "relative zero contact force" between the IoT meter calibration process and the auxiliary probe, and achieve "relative zero damage" to the IoT meter.

[0074] At present, the extension or retraction of the auxiliary probe of the single-phase electric energy meter and the auxiliary probe of the three-phase electric energy meter requires the installation of two driving cylinders with the same cylinder diameter and the same stroke, and the two driving cylinders are simultaneously and reversely moved by the reverse connection of two control valves or four gas paths of one control valve. The above structure not only requires sufficient installation space, but also has a complex pipeline arrangement, and the demand for other auxiliary components such as pneumatic joints required by the pneumatic actuator is also doubled, which has an adverse effect on the compact layout of the overall device and brings inconvenience to the later maintenance, repair and maintenance of the device.

[0075] Based on this, in order to solve the technical problems that the existing driving assembly 10 for the calibration device has a complex structure, many supporting parts, and is not conducive to maintenance and repair, refer to Figures 1 to 7One embodiment of the present invention provides a driving assembly 10 for a calibration device, and the driving assembly 10 for the calibration device includes a cylinder body 100, a first piston rod 200, and a second piston rod 300. A first air chamber 110 and a second air chamber 120 separated from each other are arranged in the cylinder body 100, and the first air chamber 110 and the second air chamber 120 are relatively sealed. A first piston 210 is arranged at one end of the first piston rod 200, and a first auxiliary probe group 220 is arranged at the other end of the first piston rod 200. The first piston 210 is arranged in the first air chamber 110, and the first piston 210 is configured to be able to move in the first air chamber 110 after being pressurized (for example, by changes in air pressure or oil pressure), so that the first piston rod 200 extends or retracts into the first air chamber 110. A second piston 310 is disposed at one end of the second piston rod 300, and a second auxiliary probe group 320 is disposed at the other end of the second piston rod 300. The second piston 310 is disposed in the second air chamber 120. The second piston 310 is configured to move in the second air chamber 120 after being pressurized (for example, by changes in air pressure or oil pressure) so that the second piston rod 300 extends or retracts into the second air chamber 120. The first piston 210 divides the first air chamber 110 into a first air cavity 111 and a second air cavity 112, the first piston rod 200 is disposed in the first air cavity 111, the second piston 310 divides the second air chamber 120 into a third air cavity 121 and a fourth air cavity 122, and the second piston rod 300 is disposed in the third air cavity 121. A connecting hole 130 connecting the first air chamber 111 and the third air chamber 121 is provided in the cylinder body 100, so that when the first piston rod 200 extends in the first air chamber 110, the second piston rod 300 retracts into the second air chamber 120, or when the second piston rod 300 extends in the second air chamber 120, the first piston rod 200 retracts into the first air chamber 110.

[0076] Specifically, in this embodiment, the first air cavity 111, the second air cavity 112, the third air cavity 121 and the fourth air cavity 122 can be filled with gas, so that the driving assembly 10 is a fully pneumatic driving method. When it is necessary to extend the first auxiliary probe group 220 and retract the second auxiliary probe group 320, gas can be filled into the second air cavity 112, so that the air pressure in the second air cavity 112 is higher than the air pressure in the first air cavity 111. At this time, the gas will push the first piston 210 to move in the direction close to the first air cavity 111, and the first piston 210 will drive the first piston rod 200 to extend in the first air chamber 110, so as to achieve the extension of the first auxiliary probe group 220. At the same time, since the first air chamber 111 and the third air chamber 121 are connected to each other through the connecting hole 130, the compressed gas in the first air chamber 111 will flow into the third air chamber 121, so that the air pressure in the third air chamber 121 is higher than the air pressure in the fourth air chamber 122. At this time, the gas will push the second piston 310 to move toward the fourth air chamber 122, and the second piston 310 will drive the second piston rod 300 to retract in the second air chamber 120, so as to achieve the retraction of the second auxiliary probe group 320. Finally, the first auxiliary probe group 220 completes the calibration of the electric energy meter.

[0077] Similarly, when the first auxiliary probe group 220 needs to be retracted and the second auxiliary probe group 320 needs to be extended, gas can be filled into the fourth air chamber 122 so that the air pressure in the fourth air chamber 122 is higher than the air pressure in the third air chamber 121. At this time, the gas will push the second piston 310 to move in the direction close to the third air chamber 121, and the second piston 310 will drive the second piston rod 300 to extend in the second air chamber 120, so as to achieve the extension of the second auxiliary probe group 320. At the same time, since the third air chamber 121 and the first air chamber 111 are connected to each other through the connecting hole 130, the compressed gas in the third air chamber 121 will flow into the first air chamber 111, so that the air pressure in the first air chamber 111 is higher than the air pressure in the second air chamber 112. At this time, the gas will push the first piston 210 to move in the direction close to the second air chamber 112, and the first piston 210 will drive the first piston rod 200 to retract in the first air chamber 110, so as to achieve the retraction of the first auxiliary probe group 220. Finally, the second auxiliary probe group 320 completes the calibration of the electric energy meter.

[0078] The present embodiment provides a dual-piston rod, dual-linkage drive assembly 10, in which when one piston rod moves, the other piston rod can move simultaneously and in the opposite direction, replacing the single-function application scenario in existing applications where two single-rod double-acting cylinders are required to realize the simultaneous and unidirectional movement of two piston rods, thereby facilitating meeting the calibration requirements of different electric energy meters. The above-mentioned drive assembly 10 has a simple structure, saves the number of control valves and simplifies the complexity of air pipe wiring, and effectively reduces the volume, saves installation space, and reduces production costs. In addition, inert gas can be filled into the first air cavity 111, the second air cavity 112, the third air cavity 121, and the fourth air cavity 122, so that the drive assembly 10 provided in this embodiment is environmentally friendly and pollution-free, and prevents the leakage of harmful substances.

[0079] In other embodiments, the first air cavity 111 and the third air cavity 121 can be filled with hydraulic oil, and the second air cavity 112 and the fourth air cavity 122 can be filled with gas, so that the drive assembly 10 is a semi-hydraulic and semi-pneumatic drive mode. When it is necessary to extend the first auxiliary probe group 220 and retract the second auxiliary probe group 320, gas can be filled into the second air cavity 112, so that the air pressure in the second air cavity 112 is greater than the oil pressure in the first air cavity 111. At this time, the gas will push the first piston 210 to move in the direction close to the first air cavity 111, and the first piston 210 will drive the first piston rod 200 to extend in the first air chamber 110, so as to extend the first auxiliary probe group 220. At the same time, since the first air chamber 111 and the third air chamber 121 are connected to each other through the connecting hole 130, the hydraulic oil in the first air chamber 111 will flow into the third air chamber 121, so that the oil pressure in the third air chamber 121 is greater than the air pressure in the fourth air chamber 122. At this time, the hydraulic oil will push the second piston 310 to move toward the fourth air chamber 122, and the second piston 310 will drive the second piston rod 300 to retract in the second air chamber 120, so as to achieve the retraction of the second auxiliary probe group 320. Finally, the first auxiliary probe group 220 completes the calibration of the electric energy meter.

[0080] Similarly, the operation method of retracting the first auxiliary probe group 220 and extending the second auxiliary probe group 320 can refer to the above embodiment, which will not be described in detail here.

[0081] In other embodiments, the first air cavity 111, the second air cavity 112, the third air cavity 121 and the fourth air cavity 122 can be filled with hydraulic oil, so that the drive assembly 10 is driven in a fully hydraulic manner. When it is necessary to extend the first auxiliary probe group 220 and retract the second auxiliary probe group 320, hydraulic oil can be filled into the second air cavity 112, so that the oil pressure in the second air cavity 112 is higher than the oil pressure in the first air cavity 111. At this time, the hydraulic oil will push the first piston 210 to move in the direction close to the first air cavity 111, and the first piston 210 will drive the first piston rod 200 to extend in the first air chamber 110, thereby extending the first auxiliary probe group 220. At the same time, since the first air chamber 111 and the third air chamber 121 are connected to each other through the connecting hole 130, the hydraulic oil in the first air chamber 111 will flow into the third air chamber 121, so that the oil pressure in the third air chamber 121 is higher than the oil pressure in the fourth air chamber 122. At this time, the hydraulic oil will push the second piston 310 to move toward the fourth air chamber 122, and the second piston 310 will drive the second piston rod 300 to retract in the second air chamber 120, so as to achieve the retraction of the second auxiliary probe group 320. Finally, the first auxiliary probe group 220 completes the calibration of the electric energy meter.

[0082] Similarly, the operation method of retracting the first auxiliary probe group 220 and extending the second auxiliary probe group 320 can refer to the above embodiment, which will not be described in detail here.

[0083] In some embodiments, reference Figures 1 to 7 The cylinder body 100 is provided with a first air inlet hole 141 and a second air inlet hole 142, wherein the first air inlet hole 141 is connected to the second air cavity 112, and the second air inlet hole 142 is connected to the fourth air cavity 122. The driving assembly 10 for the calibration device includes a first air pipe 400 and a second air pipe 500, wherein the first air pipe 400 is connected to the first air inlet hole 141 for supplying or exhausting air to the second air cavity 112; and the second air pipe 500 is connected to the second air inlet hole 142 for supplying or exhausting air to the fourth air cavity 122.

[0084] Specifically, in this embodiment, when air is supplied to the second air cavity 112 through the first air pipe 400, the air pressure in the second air cavity 112 is higher than the air pressure in the first air cavity 111, and the first piston 210 can move toward the direction close to the first air cavity 111. At this time, the first piston 210 will squeeze the air in the first air cavity 111, so that the air in the first air cavity 111 is discharged to the third air cavity 121 through the connecting hole 130. After the air pressure in the third air cavity 121 is higher than the air pressure in the fourth air cavity 122, the second piston 310 can move toward the direction close to the fourth air cavity 122. At this time, the second piston 310 will squeeze the air in the fourth air cavity 122, so that the air in the fourth air cavity 122 is discharged through the second air pipe 500 to maintain the air pressure balance in the second air chamber 120.

[0085] Similarly, when air is supplied to the fourth air cavity 122 through the second air pipe 500, the air pressure in the fourth air cavity 122 is higher than the air pressure in the third air cavity 121, and the second piston 310 can move toward the direction close to the third air cavity 121. At this time, the second piston 310 will squeeze the gas in the third air cavity 121, so that the gas in the third air cavity 121 is discharged to the first air cavity 111 through the connecting hole 130. After the air pressure in the first air cavity 111 is higher than the air pressure in the second air cavity 112, the first piston 210 can move toward the direction close to the second air cavity 112. At this time, the first piston 210 will squeeze the gas in the second air cavity 112, so that the gas in the second air cavity 112 is discharged through the first air pipe 400 to maintain the air pressure balance in the first air chamber 110.

[0086] In other embodiments, if hydraulic oil is filled into the first air cavity 111, the second air cavity 112, the third air cavity 121, and the fourth air cavity 122, the first air pipe 400 can be replaced with a first oil inlet pipe, and the second air pipe 500 can be replaced with a second oil inlet pipe. The first oil inlet pipe is used for oil inlet or oil discharge of the second air cavity 112 to maintain the hydraulic balance state in the first air chamber 110. The second oil inlet pipe is used for oil inlet or oil discharge of the fourth air cavity 122 to maintain the hydraulic balance state in the second air chamber 120.

[0087] In some embodiments, reference Figure 7 The driving assembly 10 for the calibration device further includes a solenoid valve 600, and one end of the first air pipe 400 away from the first air inlet hole 141 and one end of the second air pipe 500 away from the second air inlet hole 142 are both connected to the solenoid valve 600. The solenoid valve 600 has multiple state positions, so that the first air pipe 400 and the second air pipe 500 have multiple air path states.

[0088] Specifically, in this embodiment, the solenoid valve 600 may be a three-position five-way center-drain solenoid valve, and the solenoid valve 600 has three state positions, namely a first state position 610, a second state position 620, and a third state position 630. The first state position 610 may be that the first air pipe 400 is in a gas supply state, and the second air pipe 500 is in an exhaust state, the second state position 620 may be that the first air pipe 400 is in an exhaust state, and the second air pipe 500 is in a gas supply state, and the third state position 630 may be that both the first air pipe 400 and the second air pipe 500 are in an exhaust state.

[0089] When the solenoid valve 600 is in the first state position 610, the first piston rod 200 extends and the second piston rod 300 retracts, so that the first auxiliary probe group 220 extends and the second auxiliary probe group 320 retracts, so that the first auxiliary probe group 220 can calibrate the electric energy meter. When the solenoid valve 600 is in the second state position 620, the first piston rod 200 retracts and the second piston rod 300 extends, so that the first auxiliary probe group 220 retracts and the second auxiliary probe group 320 extends, so that the second auxiliary probe group 320 can calibrate the electric energy meter. When the solenoid valve 600 is in the third state position 630, the first piston rod 200 and the second piston rod 300 are both in a free state, so that the first piston rod 200 and the second piston rod 300 can achieve passive retraction through external reaction force.

[0090] It should be noted that the transition mechanism of the solenoid valve 600 between the first state position 610 , the second state position 620 and the third state position 630 can be referred to in the prior art and will not be described in detail here.

[0091] In some embodiments, reference Figures 1 to 6 The cylinder body 100 includes an intake side wall 140 and a non-intake side wall 150 . The intake side wall 140 is provided with a first intake hole 141 and a second intake hole 142 . The non-intake side wall 150 is provided with a mounting hole 151 .

[0092] Specifically, in this embodiment, the first air inlet hole 141 and the second air inlet hole 142 can be set on the same air inlet side wall 140, so as to facilitate the integration of the air pipe joints of the first air pipe 400 and the second air pipe 500 on the same air inlet side wall 140, thereby simplifying the pipeline arrangement. Multiple non-air inlet side walls 150 can be provided with mounting holes 151, so as to facilitate the multi-directional installation of the drive assembly 10 in the vertical direction or the horizontal direction, so as to meet various application scenarios of the drive assembly 10 and improve the installation applicability of the drive assembly 10.

[0093] In some embodiments, the mounting hole 151 may be a threaded hole, and the drive assembly 10 may be installed and positioned by means of a bolt passing through the mounting hole 151 .

[0094] In some embodiments, reference Figure 7, a first sealing ring 211 is sleeved on the outer circumference of the first piston 210, and a second sealing ring 311 is sleeved on the outer circumference of the second piston 310. Exemplarily, for example, a circle of grooves may be provided along the outer circumference of the first piston 210, and the first sealing ring 211 may be sleeved in the grooves to improve the connection stability of the first sealing ring 211 to the first piston 210, and prevent the first sealing ring 211 from falling off from the first piston 210 when the first piston 210 moves. Similarly, a circle of grooves may be provided along the outer circumference of the second piston 310, and the second sealing ring 311 may be sleeved in the grooves to improve the connection stability of the second sealing ring 311 to the second piston 310, and prevent the second sealing ring 311 from falling off from the second piston 310 when the second piston 310 moves.

[0095] Specifically, in this embodiment, by providing a first sealing ring 211 on the outer periphery of the first piston 210, the airtightness of the first air chamber 111 and the second air chamber 112 can be ensured, and the driving sensitivity of the first piston rod 200 can be improved. By providing a second sealing ring 311 on the outer periphery of the second piston 310, the airtightness of the third air chamber 121 and the fourth air chamber 122 can be ensured, and the driving sensitivity of the second piston rod 300 can be improved.

[0096] In some embodiments, reference Figure 7 A first buffer pad 113 is disposed at one end of the first air chamber 110 close to the first piston 210 , and a second buffer pad 123 is disposed at one end of the second air chamber 120 close to the second piston 310 .

[0097] Specifically, in this embodiment, the first buffer pad 113 and the second buffer pad 123 can effectively absorb the residual energy caused by the impact, reduce the vibration and noise of the drive assembly 10, and prevent the first piston rod 200 and the second piston rod 300 from being damaged by the impact force.

[0098] In some embodiments, the first piston 210 is provided with a first guide belt on its periphery, and the second piston 310 is provided with a second guide belt on its periphery. The first guide belt and the second guide belt can be structures made of low-friction, wear-resistant materials. The first guide belt can play a guiding role when the first piston 210 moves, and the second guide belt can play a guiding role when the second piston 310 moves. By providing the first guide belt and the second guide belt, it is possible to ensure that the first piston rod 200 does not deviate from the axis of the inner hole of the cylinder body 100 in the first air chamber 110, and to ensure that the second piston rod 300 does not deviate from the axis of the inner hole of the cylinder body 100 in the second air chamber 120. Direct contact between the first piston rod 200 and the inner wall of the first air chamber 110 and direct contact between the second piston rod 300 and the inner wall of the second air chamber 120 are avoided, thereby extending the service life of the first piston rod 200 and the second piston rod 300, and increasing the ability of the drive assembly 10 to resist lateral loads.

[0099] In some embodiments, the first piston 210 and the second piston 310 may have built-in magnets so that the first piston 210 and the second piston 310 can be sensed by an external magnetic switch during movement, thereby determining the movement position of the first piston 210 and the second piston 310 and indicating the operating rhythm of the drive assembly 10.

[0100] In some embodiments, reference Figures 1 to 3 The first auxiliary probe group 220 includes a first connecting plate 221 and a first auxiliary probe 222. The first connecting plate 221 is connected to the first piston rod 200. The first auxiliary probe 222 is arranged on the side of the first connecting plate 221 away from the first piston rod 200. The first auxiliary probe 222 can be a probe row. The first connecting plate 221 is driven by the first piston rod 200 to extend or retract the first auxiliary probe 222. The second auxiliary probe group 320 includes a second connecting plate 321 and a second auxiliary probe 322. The second connecting plate 321 is connected to the second piston rod 300. The second auxiliary probe 322 is arranged on the side of the second connecting plate 321 away from the second piston rod 300. The second auxiliary probe 322 can be a probe row. The second connecting plate 321 is driven by the second piston rod 300 to extend or retract the second auxiliary probe 322. The first auxiliary probe group 220 and the second auxiliary probe group 320 are stacked along the first direction X. For example, the first auxiliary probe group 220 and the second auxiliary probe group 320 may be stacked in the up-and-down direction.

[0101] Specifically, in this embodiment, the first auxiliary probe 222 and the second auxiliary probe 322 can be used to calibrate different types of electric energy meters, for example, the first auxiliary probe 222 can be used to calibrate single-phase electric energy meters, and the second auxiliary probe 322 can be used to calibrate three-phase electric energy meters. When calibrating a single-phase electric energy meter, the first auxiliary probe 222 can be driven to extend by the first piston rod 200 until the first auxiliary probe 222 is plugged into the single-phase electric energy meter and connected to the terminal of the single-phase electric energy meter. During the calibration process, the first auxiliary probe 222 outputs the required electric energy, communication, multi-function and other signals. At the same time, when the first piston rod 200 drives the first auxiliary probe 222 to extend, the second piston rod 300 will drive the second auxiliary probe 322 to retract to prevent the second auxiliary probe 322 from affecting the calibration of the single-phase electric energy meter by the first auxiliary probe 222.

[0102] Similarly, when calibrating a three-phase electric energy meter, the second auxiliary probe 322 can be driven to extend by the second piston rod 300 until the second auxiliary probe 322 is plugged into the three-phase electric energy meter and connected to the terminals of the three-phase electric energy meter. During the calibration process, the second auxiliary probe 322 outputs the required electric energy, communication, multi-function and other signals. At the same time, when the second piston rod 300 drives the second auxiliary probe 322 to extend, the first piston rod 200 will drive the first auxiliary probe 222 to retract, preventing the first auxiliary probe 222 from affecting the calibration of the three-phase electric energy meter by the second auxiliary probe 322.

[0103] In this embodiment, a slide groove 223 is provided on the side of the first auxiliary probe group 220 facing the second auxiliary probe group 320, and a slide rail 323 is provided on the side of the second auxiliary probe group 320 facing the first auxiliary probe group 220, and the slide rail 323 cooperates with the slide groove 223. On the one hand, when the first auxiliary probe group 220 slides relative to the second auxiliary probe group 320, the slide rail 323 can provide a guiding effect to improve the sliding sensitivity of the first auxiliary probe group 220 or the second auxiliary probe group 320. On the other hand, when the first auxiliary probe group 220 slides relative to the second auxiliary probe group 320, the slide rail 323 can provide a limiting effect to prevent the first auxiliary probe group 220 from deviating when sliding relative to the second auxiliary probe group 320, so as to ensure that the first auxiliary probe group 220 always slides along the second direction Y relative to the second auxiliary probe group 320.

[0104] It is understandable that in other embodiments, the side of the first auxiliary probe group 220 facing the second auxiliary probe group 320 may also be provided with a slide rail 323 , and the side of the second auxiliary probe group 320 facing the first auxiliary probe group 220 may be provided with a slide groove 223 .

[0105] In some embodiments, the first connecting plate 221 is provided with a first limiting groove, and the first limiting groove is suitable for inserting the first limiting member, and when the first auxiliary probe 222 is extended, the first limiting member is inserted into the first limiting groove. For example, the first limiting member can be driven by a motor or a manipulator, and the first limiting member is driven by the motor or the manipulator to be inserted into the first limiting groove. The second connecting plate 321 is provided with a second limiting groove, and the second limiting groove is suitable for inserting the second limiting member, and when the second auxiliary probe 322 is extended, the second limiting member is inserted into the second limiting groove. For example, the second limiting member can be driven by a motor or a manipulator, and the second limiting member is driven by the motor or the manipulator to be inserted into the second limiting groove.

[0106] Specifically, in this embodiment, when the first auxiliary probe 222 is extended into place, the first limit member can be used to achieve stable positioning of the first auxiliary probe 222 in the extended state. During the process of the first auxiliary probe 222 being plugged into the electric energy meter, the first limit member can absorb the force of the electric energy meter on the first auxiliary probe group 220, preventing the force from being directly transmitted to the first piston rod 200, causing damage to the first piston rod 200.

[0107] Similarly, when the second auxiliary probe 322 is extended into place, the second limit member can be used to achieve stable positioning of the second auxiliary probe 322 in the extended state. When the second auxiliary probe 322 is plugged into the electric energy meter, the second limit member can absorb the force of the electric energy meter on the second auxiliary probe group 320, preventing the force from being directly transmitted to the second piston rod 300, causing damage to the second piston rod 300.

[0108] Limiting the first auxiliary probe group 220 by the first limiting member and limiting the second auxiliary probe group 320 by the second limiting member is beneficial to reducing the structural design requirements for the driving assembly 10 .

[0109] In some embodiments, the drive assembly 10 for the calibration device includes a first clamp and a second clamp. The first clamp is configured to be able to move in a direction close to or away from the first piston rod 200. When the first auxiliary probe 222 is extended, the first clamp moves in a direction close to the first piston rod 200 to clamp the first piston rod 200. The second clamp is configured to be able to move in a direction close to or away from the second piston rod 300. When the second auxiliary probe 322 is extended, the second clamp moves in a direction close to the second piston rod 300 to clamp the second piston rod 300.

[0110] Specifically, in this embodiment, when the first auxiliary probe 222 is extended to the right position, the first piston rod 200 will extend out of the first air chamber 110, and the first clamping member clamps the first piston rod 200, so that the first piston rod 200 can be stably positioned in the extended state. When the first auxiliary probe 222 is plugged into the electric energy meter, the first clamping member can absorb the impact force transmitted to the first piston rod 200 to prevent the first piston rod 200 from being damaged.

[0111] Similarly, when the second auxiliary probe 322 is extended to the right position, the second piston rod 300 will extend out of the second air chamber 120. The second clamping member clamps the second piston rod 300, so that the second piston rod 300 can be stably positioned in the extended state. When the second auxiliary probe 322 is plugged into the electric energy meter, the second clamping member can absorb the impact force transmitted to the second piston rod 300 to prevent the second piston rod 300 from being damaged.

[0112] Clamping the extended first piston rod 200 by the first clamping member and clamping the extended second piston rod 300 by the second clamping member are beneficial to reducing the structural design requirements for the drive assembly 10 .

[0113] Correspondingly, another embodiment of the present invention further provides a calibration device, which includes the driving assembly 10 for the calibration device and a tray in any of the above embodiments. The tray is used to install electric energy meters of different specifications, and the first auxiliary probe group 220 and the second auxiliary probe group 320 in the driving assembly 10 for the calibration device can move toward or away from the electric energy meter to realize the calibration of electric energy meters of different specifications.

[0114] Specifically, in this embodiment, corresponding to the type of electric energy meter to be calibrated, the driving assembly 10 can drive the corresponding auxiliary probe group to extend to the front end calibration position, and drive the remaining auxiliary probe groups to retract to the rear end position, so as to be compatible with the calibration of different types of electric energy meters. The application of the driving assembly 10 for the calibration device can simplify the structure of the calibration device, save the number of control valves, and reduce the complexity of the air pipe wiring, thereby saving the installation space of the calibration device and reducing the production cost of the calibration device.

[0115] Correspondingly, another embodiment of the present invention further provides a control method for a driving component, the control method is used to drive the driving component 10 for the verification device in any of the above embodiments, and includes the following steps:

[0116] Step S100: Filling the second air cavity 112 with gas so that the air pressure in the second air cavity 112 is greater than the air pressure in the first air cavity 111, and the first piston 210 can move toward the first air cavity 111, so that the first piston rod 200 drives the first auxiliary probe set 220 to extend out of the first air cavity 110;

[0117] Step S200: The compressed gas in the first air cavity 111 enters into the third air cavity 121 through the connecting hole 130, so that the air pressure in the third air cavity 121 is greater than the air pressure in the fourth air cavity 122, and the second piston 310 can move toward the direction close to the fourth air cavity 122, so that the second piston rod 300 drives the second auxiliary probe group 320 to retract into the second air chamber 120.

[0118] Benefiting from the improvement of the driving assembly 10 for the calibration device, the calibration device and the control method of the driving assembly 10 of the present embodiment have the same technical effects as the driving assembly 10 for the calibration device, which will not be described in detail here.

[0119] It should be noted that other contents of the driving component 10 for the calibration device, the calibration device and the control method of the driving component 10 disclosed in the present invention can be referred to the prior art and will not be described in detail here.

[0120] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A drive assembly for a calibration device, characterized in that: include: A cylinder body, wherein a first air chamber and a second air chamber separated from each other are arranged in the cylinder body; a first piston rod, one end of which is provided with a first piston, the other end of which is provided with a first auxiliary probe set, the first piston being disposed in the first air chamber, the first piston being configured to be able to move in the first air chamber after being pressurized so that the first piston rod extends out of or retracts into the first air chamber; a second piston rod, one end of which is provided with a second piston, the other end of which is provided with a second auxiliary probe set, the second piston being disposed in the second air chamber, the second piston being configured to be able to move in the second air chamber after being pressurized so that the second piston rod extends out of or retracts into the second air chamber; The first piston divides the first air chamber into a first air cavity and a second air cavity, the first piston rod is disposed in the first air cavity, the second piston divides the second air chamber into a third air cavity and a fourth air cavity, and the second piston rod is disposed in the third air cavity; A connecting hole connecting the first air chamber and the third air chamber is provided in the cylinder body, so that when the first piston rod is extended in the first air chamber, the second piston rod is retracted into the second air chamber, or when the second piston rod is extended in the second air chamber, the first piston rod is retracted into the first air chamber.

2. The driving assembly for the calibration device according to claim 1, characterized in that: The cylinder body is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole is connected to the second air cavity, and the second air inlet hole is connected to the fourth air cavity; The drive assembly comprises: a first air pipe, the first air pipe being connected to the first air inlet and used for supplying or exhausting air to the second air cavity; A second air pipe, the second air pipe is connected to the second air inlet hole, and is used for supplying or exhausting air to the fourth air cavity.

3. The driving assembly for the calibration device according to claim 2, characterized in that: The driving assembly further comprises a solenoid valve, and one end of the first air pipe away from the first air inlet hole and one end of the second air pipe away from the second air inlet hole are both connected to the solenoid valve; Wherein, the solenoid valve has multiple state positions, so that the first air pipe and the second air pipe have multiple air path states.

4. The driving assembly for the calibration device according to claim 2, characterized in that: The cylinder body includes an intake side wall and a non-intake side wall, the intake side wall is provided with the first intake hole and the second intake hole, and the non-intake side wall is provided with a mounting hole.

5. The driving assembly for the calibration device according to claim 1, characterized in that: A first sealing ring is sleeved on the outer periphery of the first piston, and a second sealing ring is sleeved on the outer periphery of the second piston.

6. The driving assembly for the calibration device according to claim 1, characterized in that: A first buffer pad is disposed at one end of the first air chamber close to the first piston, and a second buffer pad is disposed at one end of the second air chamber close to the second piston.

7. The driving assembly for a calibration device according to claim 1, characterized in that: The first auxiliary probe group includes a first connecting plate and a first auxiliary probe, the first connecting plate is connected to the first piston rod, the first auxiliary probe is arranged on a side of the first connecting plate away from the first piston rod, and the first connecting plate is driven by the first piston rod to extend or retract the first auxiliary probe; The second auxiliary probe group includes a second connecting plate and a second auxiliary probe. The second connecting plate is connected to the second piston rod. The second auxiliary probe is arranged on a side of the second connecting plate away from the second piston rod. The second connecting plate is driven by the second piston rod to extend or retract the second auxiliary probe.

8. The driving assembly for the calibration device according to claim 7, characterized in that: The first connecting plate is provided with a first limiting groove, the first limiting groove is suitable for inserting a first limiting member, and when the first auxiliary probe is extended, the first limiting member is inserted into the first limiting groove; The second connecting plate is provided with a second limiting groove, and the second limiting groove is suitable for inserting a second limiting member. When the second auxiliary probe is extended, the second limiting member is inserted into the second limiting groove.

9. The driving assembly for the calibration device according to claim 7, characterized in that: The drive assembly comprises: a first clamping member, wherein the first clamping member is configured to be able to move toward or away from the first piston rod, and when the first auxiliary probe is extended, the first clamping member moves toward the first piston rod to clamp the first piston rod; The second clamping member is configured to be able to move toward or away from the second piston rod. When the second auxiliary probe is extended, the second clamping member moves toward the second piston rod to clamp the second piston rod.

10. The verification device is characterized in that: include: The driving assembly for a calibration device according to any one of claims 1 to 9, wherein the driving assembly comprises a first auxiliary probe group and a second auxiliary probe group; The tray is used to install an electric energy meter, and the first auxiliary probe group and the second auxiliary probe group can move toward or away from the electric energy meter to realize the calibration of the electric energy meter.

11. A method for controlling a drive assembly, characterized in that: The control method is used to drive the driving component for the verification device according to any one of claims 1 to 9, comprising: Filling the second air cavity with gas so that the air pressure in the second air cavity is greater than the air pressure in the first air cavity, and the first piston can move toward the first air cavity so that the first piston rod drives the first auxiliary probe group to extend out of the first air chamber; The compressed gas in the first air cavity enters the third air cavity through the connecting hole, so that the air pressure in the third air cavity is greater than the air pressure in the fourth air cavity. The second piston can move toward the fourth air cavity, so that the second piston rod drives the second auxiliary probe group to retract into the second air chamber.

Images