Driving assembly for calibrating device and calibrating device

Abstract

The utility model 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 utility model relates to the technical field of electric energy meter calibration, especially relates to a drive assembly for calibrating device and calibrating device. BACKGROUND

[0002] In the related art, in order to improve the applicability of the calibrating device, the calibrating device can be matched with various types of electric energy meters, for example, the calibrating device can simultaneously accommodate single-phase electric energy meters, three-phase electric energy meters and the like. 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 probes of single-phase electric energy meters and the auxiliary probes of three-phase electric energy meters requires the installation of two driving cylinders with the same cylinder diameter and stroke, and the simultaneous and reverse movement of the two driving cylinders is realized through the reverse connection of two control valves or four gas paths of one control valve. With the above structure, not only sufficient installation space is required, but also complex pipeline arrangement exists, and the requirements for other auxiliary components such as pneumatic joints for pneumatic actuators are also doubled, which adversely affects the compact layout of the overall device and brings inconvenience to the later maintenance and repair of the device. SUMMARY

[0004] The main purpose of the utility model is to provide a drive assembly for calibrating device and calibrating device, which aims to solve the technical problems of the existing drive assembly for calibrating device, such as complex structure, many supporting parts and difficulty in maintenance and repair.

[0005] To achieve the above purpose, the utility model provides a drive assembly for calibrating device, which comprises:

[0006] A cylinder body is provided with a first gas chamber and a second gas chamber separated from each other;

[0007] A first piston rod is provided with a first piston at one end and a first auxiliary probe group at the other end, the first piston is arranged in the first gas chamber, and the first piston is configured to move in the first gas chamber after being pressed to make the first piston rod extend or retract the first gas chamber;

[0008] A second piston rod is provided with a second piston at one end and a second auxiliary probe group at the other end, the second piston is arranged in the second gas chamber, and the second piston is configured to move in the second gas chamber after being pressed to make the second piston rod extend or retract the second gas 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 arranged 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 arranged in the third air cavity.

[0010] The cylinder body comprises a communication chamber communicating the second air cavity and the fourth air cavity, so as to realize that the second piston rod is retracted into the second air chamber when the first piston rod is extended in the first air chamber, or realize that the first piston rod is retracted into the first air chamber when the second piston rod is extended in the second air chamber.

[0011] In some embodiments, the cylinder body comprises a first shell and a second shell, and the first shell and the second shell are detachably connected.

[0012] The first shell is provided with the communication chamber, and the second shell is provided with the first air chamber and the second air chamber which are separated from each other.

[0013] In some embodiments, along the circumferential direction of the first shell, a side of the first shell close to the second shell is provided with a first folding edge away from the communication chamber, and along the circumferential direction of the second shell, a side of the second shell close to the first shell is provided with a second folding edge away from the first air chamber and the second air chamber.

[0014] The first folding edge is provided with a first clamping part, the second folding edge is provided with a second clamping part, and the second clamping part and the first clamping part are matched with each other to connect the second folding edge and the first folding edge, so as to realize the connection of the second shell and the first shell.

[0015] In some embodiments, along the circumferential direction of the first shell, a side of the first shell close to the second shell is provided with a first folding edge away from the communication chamber, and along the circumferential direction of the second shell, a side of the second shell close to the first shell is provided with a second folding edge away from the first air chamber and the second air chamber.

[0016] The first folding edge is provided with a first connecting hole, the second folding edge is provided with a second connecting hole, and the first connecting hole and the second connecting hole are adapted to pass through a connecting piece, the connecting piece connects the first folding edge and the second folding edge, and realizes the connection of the first shell and the second shell.

[0017] In some embodiments, a sealing gasket is arranged between the first folding edge and the second folding edge.

[0018] In some embodiments, the cylinder is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole being in communication with the first air cavity, and the second air inlet hole being in communication with the third air cavity;

[0019] The driving assembly comprises:

[0020] A first air pipe connected with the first air inlet hole for air supply or exhaust of the first air cavity;

[0021] A second air pipe connected with the second air inlet hole for air supply or exhaust of the third air cavity.

[0022] In some embodiments, the driving assembly further comprises a solenoid valve, 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 connected with the solenoid valve;

[0023] The solenoid valve has a plurality of state positions, so that the first air pipe and the second air pipe have a plurality of air path states.

[0024] In some embodiments, the first auxiliary probe set comprises a first connecting plate and a first auxiliary probe, the first connecting plate is connected with 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 make the first auxiliary probe extend or retract;

[0025] The second auxiliary probe set comprises a second connecting plate and a second auxiliary probe, the second connecting plate is connected with the second piston rod, the second auxiliary probe is arranged on a side of the second connecting plate away from the second piston rod, and the second connecting plate is driven by the second piston rod to make the second auxiliary probe extend or retract.

[0026] The first connecting plate is provided with a first limiting groove, and a first limiting piece is adapted to be inserted into the first limiting groove, and when the first auxiliary probe extends, the first limiting piece is inserted into the first limiting groove;

[0027] The second connecting plate is provided with a second limiting groove, and a second limiting piece is adapted to be inserted into the second limiting groove, and when the second auxiliary probe extends, the second limiting piece is inserted into the second limiting groove.

[0028] In some embodiments, the driving assembly comprises:

[0029] The first clamping piece is configured to be movable towards or away from the first piston rod, and when the first auxiliary probe extends, the first clamping piece moves towards the first piston rod to clamp the first piston rod.

[0030] The second clamping piece is configured to be movable towards or away from the second piston rod, and when the second auxiliary probe is extended, the second clamping piece is movable towards the second piston rod for clamping the second piston rod.

[0031] Correspondingly, the utility model also provides a detection device, which comprises:

[0032] The driving assembly for the detection device in any of the above embodiments comprises a first auxiliary probe group and a second auxiliary probe group.

[0033] A tray is used for mounting the electric energy meter, and the first auxiliary probe group and the second auxiliary probe group are movable towards or away from the electric energy meter to realize detection of the electric energy meter.

[0034] Compared with the prior art, the utility model has the beneficial effects that:

[0035] In the technical scheme of the utility model, the first gas cavity, the second gas cavity, the third gas cavity and the fourth gas cavity can be filled with gas, so that the driving assembly is a full-pneumatic driving mode. When the first auxiliary probe group needs to be extended and the second auxiliary probe group needs to be retracted, the third gas cavity can be filled with gas, so that the gas pressure in the third gas cavity is higher than that in the fourth gas cavity. At this time, the gas will push the second piston to move towards the fourth gas cavity, and the second piston will drive the second piston rod to retract in the second gas chamber, thereby realizing retraction of the second auxiliary probe group. At the same time, since the fourth gas cavity and the second gas cavity are connected through the communication chamber, the compressed gas in the fourth gas cavity will flow into the second gas cavity, so that the gas pressure in the second gas cavity is higher than that in the first gas cavity. At this time, the gas will push the first piston to move towards the first gas cavity, and the first piston will drive the first piston rod to extend in the first gas chamber, thereby realizing extension of the first auxiliary probe group. Finally, the first auxiliary probe group completes detection of the electric energy meter.

[0036] Similarly, when the first auxiliary probe group needs to be retracted and the second auxiliary probe group needs to be extended, the gas can be filled into the first gas cavity, so that the gas pressure in the first gas cavity is higher than that in the second gas cavity, at this time the gas pushes the first piston to move towards the second gas cavity, the first piston retracts the first piston rod in the first gas chamber, and the retraction of the first auxiliary probe group is realized. At the same time, since the second gas cavity and the fourth gas cavity are connected through the communication chamber, the compressed gas in the second gas cavity flows into the fourth gas cavity, so that the gas pressure in the fourth gas cavity is higher than that in the third gas cavity, at this time the gas pushes the second piston to move towards the third gas cavity, the second piston extends the second piston rod in the second gas chamber, and the extension of the second auxiliary probe group is realized. Finally, the second auxiliary probe group completes the verification of the electric energy meter.

[0037] The utility model provides a kind of double piston rod, double linkage's drive assembly, one of which moves, the other piston rod can move simultaneously and reversely, replace the single function application scene of two piston rods simultaneous and same direction action that need to be realized by two single rod double-acting cylinders in the prior application, to facilitate to meet the verification needs of different electric energy meter. The structure of the above-mentioned drive assembly is simple, saves the number of control valve and simplifies the complexity degree of gas pipe wiring, and effectively reduces the volume, saves installation space, reduces production cost. In addition, inert gas can be filled into the first gas cavity, the second gas cavity, the third gas cavity and the fourth gas cavity, so that the drive assembly provided by the utility model is environmentally friendly and pollution-free, and harmful substance leakage is prevented.

[0038] Corresponding to the type of electric energy meter to be verified, the drive assembly can drive the corresponding auxiliary probe group to extend to the front end verification position, while driving the remaining auxiliary probe group to retract to the rear end position, so that the verification of different types of electric energy meters can be compatible. The drive assembly for the verification device can simplify the structure of the verification device, save the number of control valves, reduce the complexity of gas pipe wiring, thereby saving the installation space of the verification device and reducing the production cost of the verification device. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating labor.

[0040] Figure 1 The state diagram of the drive assembly for the verification device provided by an embodiment of the utility model in the original state is shown in the figure.

[0041] Figure 2 A state diagram of a driving assembly for a testing device provided by an embodiment of the present utility model in a state that the first auxiliary probe set is extended and the second auxiliary probe set is retracted;

[0042] Figure 3 A state diagram of a driving assembly for a testing device provided by an embodiment of the present utility model in a state that the first auxiliary probe set is retracted and the second auxiliary probe set is extended;

[0043] Figure 4 A state diagram of a driving assembly for a testing device provided by an embodiment of the present utility model in a state that the first piston rod is extended and the second piston rod is retracted;

[0044] Figure 5 A state diagram of a driving assembly for a testing device provided by an embodiment of the present utility model in a state that the first piston rod is retracted and the second piston rod is extended;

[0045] Figure 6 A state diagram of a driving assembly for a testing device provided by an embodiment of the present utility model in a state that the first piston rod and the second piston rod are in an original state;

[0046] Figure 7 A control connection principle diagram of a driving assembly for a testing device provided by an embodiment of the present utility model;

[0047] Figure 8 A structure schematic diagram of a cylinder body in a disassembled state in a driving assembly for a testing device provided by an embodiment of the present utility model.

[0048] Explanation of reference numerals:

[0049] 10, driving assembly;

[0050] 100, cylinder body;

[0051] 101, first shell; 102, second shell; 110, first air chamber; 120, second air chamber; 130, communication chamber; 140, air inlet side wall; 150, non-air inlet side wall; 160, first folding edge; 170, second folding edge;

[0052] 111, first air cavity; 112, second air cavity; 113, first buffer pad;

[0053] 121, third air cavity; 122, fourth air cavity; 123, second buffer pad;

[0054] 141, first air inlet hole; 142, second air inlet hole;

[0055] 151, mounting hole;

[0056] 200, first piston rod;

[0057] 210, first piston; 220, first auxiliary probe group;

[0058] 211, first sealing ring;

[0059] 221, first connecting plate; 222, first auxiliary probe; 223, sliding groove;

[0060] 300, second piston rod;

[0061] 310, second piston; 320, second auxiliary probe group;

[0062] 311, second sealing ring;

[0063] 321, second connecting plate; 322, second auxiliary probe; 323, sliding rail;

[0064] 400, first air pipe;

[0065] 500, second air pipe;

[0066] 600, electromagnetic valve;

[0067] 610, first state bit; 620, second state bit; 630, third state bit;

[0068] X, first direction;

[0069] Y, second direction.

[0070] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0072] It should be noted that if the embodiments of the utility model 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 condition, etc. between components in a certain posture, if the certain posture changes, the directional indications also change accordingly.

[0073] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0074] In the related art, in order to improve the applicability of the testing device, the testing device can be matched with a plurality of types of electric energy meters, for example, the testing device can simultaneously compatible with single-phase electric energy meters, three-phase electric energy meters and the like. When testing single-phase electric energy meters and three-phase electric energy meters, the corresponding auxiliary probes need to be extended or retracted. For example, when testing single-phase smart electric energy meters and three-phase smart electric energy meters respectively, the corresponding auxiliary probes are extended to the front testing position, and the other auxiliary probes need to be retracted to the rear position.

[0075] At present, the extension or retraction of the auxiliary probes of single-phase electric energy meters and the auxiliary probes of three-phase electric energy meters needs to install two driving cylinders with the same cylinder diameter and stroke, and the simultaneous and reverse action of the two driving cylinders is realized by the reverse connection of two control valves or four gas paths of one control valve. With the above structure, not only enough installation space is needed, but also complex pipeline arrangement exists, and the requirements of other auxiliary components such as pneumatic joints for pneumatic actuators are also doubled, which has adverse effects on the compact layout of the whole device, and brings inconvenience to the later maintenance and repair of the device.

[0076] Therefore, in order to solve the technical problems of the existing driving assembly 10 for testing device, such as complex structure, many supporting parts and being not conducive to maintenance and repair, with reference to Figures 1 to 7This utility model provides a drive assembly 10 for a calibration device, which includes a cylinder 100, a first piston rod 200, and a second piston rod 300. The cylinder 100 contains a first air chamber 110 and a second air chamber 120 that are separated from each other and are relatively sealed. One end of the first piston rod 200 is provided with a first piston 210, and the other end is provided with a first auxiliary probe group 220. The first piston 210 is disposed within the first air chamber 110 and is configured to move within the first air chamber 110 when compressed (e.g., 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 provided at one end of the second piston rod 300, and a second auxiliary probe assembly 320 is provided at the other end of the second piston rod 300. The second piston 310 is disposed within the second air chamber 120 and is configured to move within the second air chamber 120 when pressurized (e.g., by changes in air pressure or oil pressure), so that the second piston rod 300 extends or retracts within the second air chamber 120. Specifically, the first piston 210 divides the first air chamber 110 into a first air cavity 111 and a second air cavity 112, with the first piston rod 200 disposed within 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, with the second piston rod 300 disposed within the third air cavity 121. The cylinder body 100 includes a connecting chamber 130 that connects the second air chamber 112 and the fourth air chamber 122, so that when the first piston rod 200 extends out of 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 out of the second air chamber 120, the first piston rod 200 retracts into the first air chamber 110.

[0077] Specifically, in the present 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 full pneumatic driving mode. When the first auxiliary probe group 220 needs to be extended and the second auxiliary probe group 320 needs to be retracted, the third air cavity 121 can be filled with gas, so that the gas pressure in the third air cavity 121 is higher than that in the fourth air cavity 122. At this time, the gas will push the second piston 310 to move towards the fourth air cavity 122, and the second piston 310 will drive the second piston rod 300 to retract in the second air chamber 120, achieving the retraction of the second auxiliary probe group 320. At the same time, since the fourth air cavity 122 and the second air cavity 112 are connected through the communication chamber 130, the compressed gas in the fourth air cavity 122 will flow into the second air cavity 112, so that the gas pressure in the second air cavity 112 is higher than that in the first air cavity 111. At this time, the gas will push the first piston 210 to move towards 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, achieving the extension of the first auxiliary probe group 220. Finally, the first auxiliary probe group 220 completes the verification of the electric energy meter.

[0078] Similarly, when the first auxiliary probe group 220 needs to be retracted and the second auxiliary probe group 320 needs to be extended, the first air cavity 111 can be filled with gas, so that the gas pressure in the first air cavity 111 is higher than that in the second air cavity 112. At this time, the gas will push the first piston 210 to move towards the second air cavity 112, and the first piston 210 will drive the first piston rod 200 to retract in the first air chamber 110, achieving the retraction of the first auxiliary probe group 220. At the same time, since the second air cavity 112 and the fourth air cavity 122 are connected through the communication chamber 130, the compressed gas in the second air cavity 112 will flow into the fourth air cavity 122, so that the gas pressure in the fourth air cavity 122 is higher than that in the third air cavity 121. At this time, the gas will push the second piston 310 to move towards the third air cavity 121, and the second piston 310 will drive the second piston rod 300 to extend in the second air chamber 120, achieving the extension of the second auxiliary probe group 320. Finally, the second auxiliary probe group 320 completes the verification of the electric energy meter.

[0079] The embodiment provides a double-piston-rod and double-linkage driving assembly 10, wherein when one piston rod moves, the other piston rod can simultaneously and reversely move, which replaces the single function application scene of the simultaneous and same direction movement of two piston rods realized by two single-rod double-acting cylinders in the prior application, thereby facilitating to meet the calibration requirements of different electric energy meters. The driving assembly 10 has a simple structure, saves the number of control valves, simplifies the complexity of air pipe wiring, effectively reduces the volume, saves the installation space, and reduces the production cost. 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 driving assembly 10 provided by the embodiment is environmentally friendly and non-polluting, and harmful substance leakage is prevented.

[0080] In other embodiments, the second air cavity 112 and the fourth air cavity 122 can be filled with hydraulic oil, and the first air cavity 111 and the third air cavity 121 can be filled with gas, so that the driving assembly 10 is a semi-hydraulic and semi-pneumatic driving mode. When the first auxiliary probe group 220 needs to be extended and the second auxiliary probe group 320 needs to be retracted, gas can be filled into the third air cavity 121, so that the air pressure in the third air cavity 121 is greater than the oil pressure in the fourth air cavity 122. At this time, the gas will push the second piston 310 to move towards the fourth air cavity 122, and the second piston 310 will drive the second piston rod 300 to retract in the second air chamber 120, so as to realize the retraction of the second auxiliary probe group 320. At the same time, since the fourth air cavity 122 and the second air cavity 112 are connected through the communication chamber 130, the hydraulic oil in the fourth air cavity 122 will flow into the second air cavity 112, so that the oil pressure in the second air cavity 112 is greater than the air pressure in the first air cavity 111. At this time, the hydraulic oil will push the first piston 210 to move towards 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 realize the extension of the first auxiliary probe group 220. Finally, the calibration of the electric energy meter by the first auxiliary probe group 220 is completed.

[0081] Similarly, the operation mode 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 here.

[0082] 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 driving assembly 10 is a full hydraulic driving mode. When the first auxiliary probe group 220 needs to be extended and the second auxiliary probe group 320 needs to be retracted, hydraulic oil can be filled into the third air cavity 121, so that the oil pressure in the third air cavity 121 is higher than the oil pressure in the fourth air cavity 122. At this time, the hydraulic oil will push the second piston 310 to move towards the fourth air cavity 122, and the second piston 310 will drive the second piston rod 300 to retract in the second air chamber 120, achieving the retraction of the second auxiliary probe group 320. At the same time, since the fourth air cavity 122 and the second air cavity 112 are connected through the communication chamber 130, the hydraulic oil in the fourth air cavity 122 will flow 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 towards 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, achieving the extension of the first auxiliary probe group 220. Finally, the first auxiliary probe group 220 completes the verification of the electric energy meter.

[0083] Similarly, the operation mode of retracting the first auxiliary probe group 220 and extending the second auxiliary probe group 320 can refer to the above-mentioned embodiments, which will not be described here.

[0084] In some embodiments, referring to Figure 8 , the cylinder body 100 includes a first shell 101 and a second shell 102, which are detachably connected. The first shell 101 is provided with a communication chamber 130, and the second shell 102 is provided with a first air chamber 110 and a second air chamber 120 which are separated from each other. The driving assembly 10 is designed in a split type, which is beneficial to on-site assembly of the driving assembly 10, so as to facilitate transportation of the driving assembly 10. For example, in some embodiments, along the circumference of the first shell 101, the side of the first shell 101 close to the second shell 102 is provided with a first folding edge 160 away from the communication chamber 130. Along the circumference of the second shell 102, the side of the second shell 102 close to the first shell 101 is provided with a second folding edge 170 away from the first air chamber 110 and the second air chamber 120. The first folding edge 160 is provided with a first clamping part, and the second folding edge 170 is provided with a second clamping part. The second clamping part and the first clamping part cooperate to connect the second folding edge 170 and the first folding edge 160, achieving the connection of the second shell 102 and the first shell 101.

[0085] Specifically, in the embodiment, the first clamping part can be a clamping block, and the second clamping part can be a clamping slot. Alternatively, the first clamping part can be a clamping slot, and the second clamping part can be a clamping block. When assembling the first shell 101 and the second shell 102 on site, first, the first folded edge 160 and the second folded edge 170 are arranged in alignment, and then the first clamping part is inserted into the second clamping part, so as to realize the clamping connection of the first shell 101 and the second shell 102. With the above structure, the assembly mode of the driving assembly 10 is simple, which is conducive to saving the assembly time of the driving assembly 10 and improving the assembly efficiency of the driving assembly 10.

[0086] For another example, in some other embodiments, the first folded edge 160 is provided with a first connecting hole, the second folded edge 170 is provided with a second connecting hole, and the first connecting hole and the second connecting hole are adapted to pass through a connecting piece. The connecting piece connects the first folded edge 160 and the second folded edge 170, and realizes the connection of the first shell 101 and the second shell 102.

[0087] Specifically, in the embodiment, the first connecting hole and the second connecting hole can each be a threaded hole, and the connecting piece can be a bolt. When assembling the first shell 101 and the second shell 102 on site, first, the first folded edge 160 and the second folded edge 170 are arranged in alignment, so that the first connecting hole and the second connecting hole are aligned, and then the connecting piece is passed through the first connecting hole and the second connecting hole, so as to realize the fastening connection of the first shell 101 and the second shell 102. With the above structure, the assembly mode of the driving assembly 10 is firm, which is conducive to improving the connection stability of the driving assembly 10.

[0088] In addition, the first folded edge 160 and the second folded edge 170 are arranged, which can increase the contact area between the first shell 101 and the second shell 102, and facilitate the stable connection between the first shell 101 and the second shell 102.

[0089] In some embodiments, a sealing gasket is arranged between the first folded edge 160 and the second folded edge 170.

[0090] Specifically, in the embodiment, through the sealing gasket, the sealing property of the communication chamber 130, the first gas chamber 110 and the second gas chamber 120 can be ensured, which is conducive to improving the action sensitivity of the first piston rod 200 and the second piston rod 300 when driven.

[0091] In some embodiments, with reference to Figures 1 to 7The cylinder 100 is provided with a first air inlet hole 141 and a second air inlet hole 142. The first air inlet hole 141 is connected with the first air chamber 111, and the second air inlet hole 142 is connected with the third air chamber 121. The driving assembly 10 for the detection device comprises a first air pipe 400 and a second air pipe 500. The first air pipe 400 is connected with the first air inlet hole 141, and is used for air supply or air exhaust of the first air chamber 111. The second air pipe 500 is connected with the second air inlet hole 142, and is used for air supply or air exhaust of the third air chamber 121.

[0092] Specifically, in the embodiment, when air is supplied into the first air chamber 111 through the first air pipe 400, the air pressure in the first air chamber 111 is higher than that in the second air chamber 112, and the first piston 210 can move towards the second air chamber 112. At this time, the first piston 210 can press the gas in the second air chamber 112, so that the gas in the second air chamber 112 is discharged to the fourth air chamber 122 through the communication chamber 130. After the air pressure in the fourth air chamber 122 is higher than that in the third air chamber 121, the second piston 310 can move towards the third air chamber 121. At this time, the second piston 310 can press the gas in the third air chamber 121, so that the gas in the third air chamber 121 is discharged through the second air pipe 500, to keep the air pressure in the second air chamber 120 balanced.

[0093] Similarly, when air is supplied into the third air chamber 121 through the second air pipe 500, the air pressure in the third air chamber 121 is higher than that in the fourth air chamber 122, and the second piston 310 can move towards the fourth air chamber 122. At this time, the second piston 310 can press the gas in the fourth air chamber 122, so that the gas in the fourth air chamber 122 is discharged to the second air chamber 112 through the communication chamber 130. After the air pressure in the second air chamber 112 is higher than that in the first air chamber 111, the first piston 210 can move towards the first air chamber 111. At this time, the first piston 210 can press the gas in the first air chamber 111, so that the gas in the first air chamber 111 is discharged through the first air pipe 400, to keep the air pressure in the first air chamber 110 balanced.

[0094] In other embodiments, if the first air chamber 111, the second air chamber 112, the third air chamber 121 and the fourth air chamber 122 are filled with hydraulic oil, the first air pipe 400 can be replaced by a first oil inlet pipe, and the second air pipe 500 can be replaced by a second oil inlet pipe. The first oil inlet pipe is used for oil supply or oil exhaust of the first air chamber 111, to keep the hydraulic pressure in the first air chamber 110 balanced. The second oil inlet pipe is used for oil supply or oil exhaust of the third air chamber 121, to keep the hydraulic pressure in the second air chamber 120 balanced.

[0095] In some embodiments, with reference to Figure 7The driving assembly 10 for the testing device further comprises an electromagnetic 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 connected to the electromagnetic valve 600. The electromagnetic valve 600 has multiple state positions, so that the first air pipe 400 and the second air pipe 500 have multiple air path states.

[0096] Specifically, in the present embodiment, the electromagnetic valve 600 can be a three-position five-way venting electromagnetic valve. The electromagnetic valve 600 has three state positions, i.e., a first state position 610, a second state position 620, and a third state position 630. The first state position 610 can be a state in which the first air pipe 400 is in a gas supply state and the second air pipe 500 is in a gas exhaust state. The second state position 620 can be a state in which the first air pipe 400 is in a gas exhaust state and the second air pipe 500 is in a gas supply state. The third state position 630 can be an original state of the driving assembly 10 when the driving assembly 10 is not used alone.

[0097] When the electromagnetic valve 600 is in the first state position 610, the first piston rod 200 is retracted, and the second piston rod 300 is extended, so that the first auxiliary probe group 220 is retracted and the second auxiliary probe group 320 is extended, thereby realizing the testing of the electric energy meter by the second auxiliary probe group 320. When the electromagnetic valve 600 is in the second state position 620, the first piston rod 200 is extended, and the second piston rod 300 is retracted, so that the first auxiliary probe group 220 is extended and the second auxiliary probe group 320 is retracted, thereby realizing the testing of the electric energy meter by the first auxiliary probe group 220. When the electromagnetic valve 600 is in the third state position 630, the first piston rod 200 and the second piston rod 300 are in the original state.

[0098] It should be noted that the transition mechanism of the electromagnetic valve 600 between the first state position 610, the second state position 620, and the third state position 630 can refer to the prior art, which will not be described here.

[0099] In some embodiments, referring to Figures 1 to 6 The cylinder 100 comprises an air inlet side wall 140 and a non-air inlet side wall 150. The air inlet side wall 140 is provided with a first air inlet hole 141 and a second air inlet hole 142, and the non-air inlet side wall 150 is provided with a mounting hole 151.

[0100] Specifically, in the embodiment, the first air inlet hole 141 and the second air inlet hole 142 can be arranged on the same air inlet side wall 140, thereby facilitating 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, and achieving the purpose of simplifying the pipeline arrangement. The plurality of non-air inlet side walls 150 can each be provided with a mounting hole 151, thereby facilitating the multi-directional installation of the driving assembly 10 in the vertical direction or the horizontal direction to meet various application scenarios of the driving assembly 10 and improve the installation applicability of the driving assembly 10.

[0101] In some embodiments, the mounting hole 151 can be a threaded hole, and the installation and positioning of the driving assembly 10 can be achieved by means of a bolt threaded in the mounting hole 151.

[0102] In some embodiments, referring to Figure 7 , the outer periphery of the first piston 210 is sleeved with a first sealing ring 211, and the outer periphery of the second piston 310 is sleeved with a second sealing ring 311. For example, a groove is formed along the outer periphery of the first piston 210, and the first sealing ring 211 is sleeved in the groove to improve the connection stability of the first sealing ring 211 on the first piston 210 and prevent the first sealing ring 211 from falling off the first piston 210 during movement of the first piston 210. Similarly, a groove is formed along the outer periphery of the second piston 310, and the second sealing ring 311 is sleeved in the groove to improve the connection stability of the second sealing ring 311 on the second piston 310 and prevent the second sealing ring 311 from falling off the second piston 310 during movement of the second piston 310.

[0103] Specifically, in the embodiment, by arranging the first sealing ring 211 on the outer periphery of the first piston 210, the air tightness of the first air cavity 111 and the second air cavity 112 can be ensured, and the driving sensitivity of the first piston rod 200 can be improved. By arranging the second sealing ring 311 on the outer periphery of the second piston 310, the air tightness of the third air cavity 121 and the fourth air cavity 122 can be ensured, and the driving sensitivity of the second piston rod 300 can be improved.

[0104] In some embodiments, referring to Figure 7 , the first piston 210 is provided with a first buffer pad 113 at the end of the end portion away from the first piston rod 200, and the second piston 310 is provided with a second buffer pad 123 at the end of the end portion away from the second piston rod 300.

[0105] Specifically, in the 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 driving assembly 10, and prevent damage to the first piston rod 200 and the second piston rod 300 caused by the impact force.

[0106] In some embodiments, the outer periphery of the first piston 210 is provided with a first guide belt, and the outer periphery of the second piston 310 is provided with a second guide belt. The first guide belt and the second guide belt can be structures made of low-friction and wear-resistant materials. The first guide belt can guide the movement of the first piston 210, and the second guide belt can guide the movement of the second piston 310. By providing the first guide belt and the second guide belt, it can be ensured that the first piston rod 200 moves linearly in the first gas chamber 110 without deviating from the axis of the bore of the cylinder body 100, and that the second piston rod 300 moves linearly in the second gas chamber 120 without deviating from the axis of the bore of the cylinder body 100, avoiding direct contact between the first piston rod 200 and the inner wall of the first gas chamber 110, and avoiding direct contact between the second piston rod 300 and the inner wall of the second gas chamber 120, thereby prolonging 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.

[0107] In some embodiments, the first piston 210 and the second piston 310 can be provided with 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 operation cycle of the drive assembly 10.

[0108] In some embodiments, referring to Figures 1 to 3 , the first auxiliary probe set 220 includes a first connecting plate 221 connected to the first piston rod 200 and a first auxiliary probe 222 disposed 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 array, and 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 set 320 includes a second connecting plate 321 connected to the second piston rod 300 and a second auxiliary probe 322 disposed 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 array, and 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 set 220 and the second auxiliary probe set 320 are stacked in the first direction X. For example, the first auxiliary probe set 220 and the second auxiliary probe set 320 can be stacked in the up-down direction.

[0109] Specifically, in the present embodiment, the first auxiliary probe 222 and the second auxiliary probe 322 can be respectively used for testing different types of electric energy meters, for example, the first auxiliary probe 222 can be used for testing single-phase electric energy meters, and the second auxiliary probe 322 can be used for testing three-phase electric energy meters. When testing 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 terminals of the single-phase electric energy meter, and the first auxiliary probe 222 outputs the required electric energy, communication, multifunctional and other signals in the process of testing. At the same time, in the process of driving the first auxiliary probe 222 to extend by the first piston rod 200, the second auxiliary probe 322 is driven to retract by the second piston rod 300, so as to prevent the second auxiliary probe 322 from affecting the testing of the single-phase electric energy meter by the first auxiliary probe 222.

[0110] Similarly, when testing 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, and the second auxiliary probe 322 outputs the required electric energy, communication, multifunctional and other signals in the process of testing. At the same time, in the process of driving the second auxiliary probe 322 to extend by the second piston rod 300, the first auxiliary probe 222 is driven to retract by the first piston rod 200, so as to prevent the first auxiliary probe 222 from affecting the testing of the three-phase electric energy meter by the second auxiliary probe 322.

[0111] In the present embodiment, the side of the first auxiliary probe group 220 facing the second auxiliary probe group 320 is provided with a sliding groove 223, and the side of the second auxiliary probe group 320 facing the first auxiliary probe group 220 is provided with a sliding rail 323, and the sliding rail 323 and the sliding groove 223 cooperate. On the one hand, when the first auxiliary probe group 220 slides relative to the second auxiliary probe group 320, the sliding 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 sliding rail 323 can provide a limiting effect to prevent the first auxiliary probe group 220 from deviating when it slides relative to the second auxiliary probe group 320, so as to ensure that the first auxiliary probe group 220 always slides relative to the second auxiliary probe group 320 in the second direction Y.

[0112] It can be understood that in other embodiments, the side of the first auxiliary probe group 220 facing the second auxiliary probe group 320 can also be provided with a sliding rail 323, and the side of the second auxiliary probe group 320 facing the first auxiliary probe group 220 is provided with a sliding groove 223.

[0113] In some embodiments, the first connecting plate 221 is provided with a first limiting slot, and a first limiting piece is adapted to be inserted into the first limiting slot. When the first auxiliary probe 222 is extended, the first limiting piece is inserted into the first limiting slot. For example, the first limiting piece can be driven by a motor or a mechanical hand, and the first limiting piece is inserted into the first limiting slot by the motor or the mechanical hand. The second connecting plate 321 is provided with a second limiting slot, and a second limiting piece is adapted to be inserted into the second limiting slot. When the second auxiliary probe 322 is extended, the second limiting piece is inserted into the second limiting slot. For example, the second limiting piece can be driven by a motor or a mechanical hand, and the second limiting piece is inserted into the second limiting slot by the motor or the mechanical hand.

[0114] Specifically, in the present embodiment, when the first auxiliary probe 222 is extended to the position, the first limiting piece can be used to realize the stable positioning of the first auxiliary probe 222 in the extended state. During the process of inserting the first auxiliary probe 222 into the electric energy meter, the first limiting piece 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, thereby preventing the first piston rod 200 from being damaged.

[0115] Similarly, when the second auxiliary probe 322 is extended to the position, the second limiting piece can be used to realize the stable positioning of the second auxiliary probe 322 in the extended state. During the process of inserting the second auxiliary probe 322 into the electric energy meter, the second limiting piece 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, thereby preventing the second piston rod 300 from being damaged.

[0116] By limiting the first auxiliary probe group 220 by the first limiting piece and limiting the second auxiliary probe group 320 by the second limiting piece, the structural design requirements of the driving assembly 10 can be reduced.

[0117] In some embodiments, the driving assembly 10 for the testing device includes a first clamping piece and a second clamping piece. The first clamping piece is configured to be movable towards or away from the first piston rod 200. When the first auxiliary probe 222 is extended, the first clamping piece is moved towards the first piston rod 200 to clamp the first piston rod 200. The second clamping piece is configured to be movable towards or away from the second piston rod 300. When the second auxiliary probe 322 is extended, the second clamping piece is moved towards the second piston rod 300 to clamp the second piston rod 300.

[0118] Specifically, in the embodiment, when the first auxiliary probe 222 is extended to the position, the first piston rod 200 is extended out of the first air chamber 110, and the first clamping piece clamps the first piston rod 200, so that the stable positioning of the first piston rod 200 in the extended state can be realized. In the process of inserting the first auxiliary probe 222 into the electric energy meter, the first clamping piece can absorb the impact force transmitted to the first piston rod 200, so as to prevent the first piston rod 200 from being damaged.

[0119] Similarly, when the second auxiliary probe 322 is extended to the position, the second piston rod 300 is extended out of the second air chamber 120, and the second clamping piece clamps the second piston rod 300, so that the stable positioning of the second piston rod 300 in the extended state can be realized. In the process of inserting the second auxiliary probe 322 into the electric energy meter, the second clamping piece can absorb the impact force transmitted to the second piston rod 300, so as to prevent the second piston rod 300 from being damaged.

[0120] By clamping the extended first piston rod 200 by the first clamping piece and clamping the extended second piston rod 300 by the second clamping piece, the structural design requirements of the driving assembly 10 can be reduced.

[0121] Correspondingly, the utility model also provides another embodiment of a detection device, which comprises the driving assembly 10 for the detection device and the tray in any of the above embodiments. The tray is used for installing 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 detection device can move towards or away from the electric energy meter, so as to realize the detection of electric energy meters of different specifications.

[0122] Specifically, in the embodiment, corresponding to the type of the electric energy meter to be detected, the driving assembly 10 can drive the corresponding auxiliary probe group to extend to the front end detection position, while driving the remaining auxiliary probe groups to retract to the rear end position, so as to be compatible with the detection of electric energy meters of different types. By applying the driving assembly 10 for the detection device, the structure of the detection device can be simplified, the number of control valves can be saved, and the complexity of the air pipe wiring can be reduced, so as to save the installation space of the detection device and reduce the production cost of the detection device.

[0123] Correspondingly, the utility model also provides another embodiment of a control method of the driving assembly 10, which is used for driving the driving assembly 10 for the detection device in any of the above embodiments, and comprises the following steps:

[0124] Step S100: gas is filled into the first air cavity 111, so that the gas pressure in the first air cavity 111 is greater than the gas pressure in the second air cavity 112, and the first piston 210 can move towards the second air cavity 112, so that the first piston rod 200 drives the first auxiliary probe group 220 to retract into the first air chamber 110;

[0125] Step S200: the compressed gas in the second air cavity 112 enters into the fourth air cavity 122 through the communication chamber 130, so that the air pressure in the fourth air cavity 122 is greater than the air pressure in the third air cavity 121, and the second piston 310 can move towards the direction close to the third air cavity 121, so that the second auxiliary probe group 320 is extended out of the second air chamber 120 by the second piston rod 300.

[0126] Benefiting from the improvement of the driving assembly 10 for the testing device, the testing device and the control method of the driving assembly 10 of the embodiment have the same technical effects as the driving assembly 10 for the testing device, which will not be repeated here.

[0127] It should be noted that other contents of the driving assembly 10 for the testing device, the testing device and the control method of the driving assembly 10 disclosed in the utility model can be referred to the prior art, which will not be repeated here.

[0128] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the utility model concept of the utility model, or the contents of the utility model specification and the drawings are included in the patent protection range of the utility model.

Claims

1. Drive assembly for an assay device, characterized in that The utility model relates to a cylinder, which comprises: a cylinder body, wherein a first gas chamber and a second gas chamber are arranged in the cylinder body and are separated from each other; a first piston rod, one end of the first piston rod is provided with a first piston, the other end of the first piston rod is provided with a first auxiliary probe group, the first piston is arranged in the first gas chamber, and the first piston is configured to move in the first gas chamber after being pressed to make the first piston rod extend out of or retract into the first gas chamber; a second piston rod, one end of the second piston rod is provided with a second piston, the other end of the second piston rod is provided with a second auxiliary probe group, the second piston is arranged in the second gas chamber, and the second piston is configured to move in the second gas chamber after being pressed to make the second piston rod extend out of or retract into the second gas chamber; wherein the first piston separates the first gas chamber into a first air cavity and a second air cavity, the first piston rod is arranged in the first air cavity, the second piston separates the second gas chamber into a third air cavity and a fourth air cavity, and the second piston rod is arranged in the third air cavity; the cylinder body comprises a communication chamber that communicates the second air cavity and the fourth air cavity, so as to achieve that the second piston rod retracts into the second gas chamber when the first piston rod extends out of the first gas chamber, or the first piston rod retracts into the first gas chamber when the second piston rod extends out of the second gas chamber.

2. Drive assembly for an assay device according to claim 1, characterized in that the cylinder body comprises a first shell and a second shell, and the first shell and the second shell are detachably connected; wherein the first shell is provided with the communication chamber, and the second shell is provided with the first gas chamber and the second gas chamber that are separated from each other.

3. Drive assembly for an assay device according to claim 2, characterized in that along the circumference of the first shell, a first folding edge is arranged on the side of the first shell close to the second shell and faces away from the communication chamber, and along the circumference of the second shell, a second folding edge is arranged on the side of the second shell close to the first shell and faces away from the first gas chamber and the second gas chamber; wherein the first folding edge is provided with a first clamping part, the second folding edge is provided with a second clamping part, and the second clamping part and the first clamping part are matched with each other to connect the second folding edge and the first folding edge, so as to realize the connection of the second shell and the first shell.

4. The drive assembly for an assay device of claim 2, wherein, along the circumference of the first shell, a first folding edge is arranged on the side of the first shell close to the second shell and faces away from the communication chamber, and along the circumference of the second shell, a second folding edge is arranged on the side of the second shell close to the first shell and faces away from the first gas chamber and the second gas chamber; wherein the first folding edge is provided with a first connecting hole, the second folding edge is provided with a second connecting hole, a connecting piece is adapted to be arranged in the first connecting hole and the second connecting hole, the connecting piece connects the first folding edge and the second folding edge, and the first shell and the second shell are connected.

5. Drive assembly for an assay device according to claim 3 or 4, characterized in that a sealing gasket is arranged between the first folding edge and the second folding edge.

6. The drive assembly for an assay device of claim 1, wherein, The cylinder is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole is communicated with the first air cavity, and the second air inlet hole is communicated with the third air cavity; The driving assembly comprises: A first air pipe connected with the first air inlet hole for air supply or exhaust of the first air cavity; A second air pipe connected with the second air inlet hole for air supply or exhaust of the third air cavity.

7. Drive assembly for an assay device according to claim 6, characterized in that The driving assembly further comprises a solenoid valve, 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 connected with the solenoid valve; The solenoid valve has multiple state positions, so that the first air pipe and the second air pipe have multiple air path states.

8. The drive assembly for an assay device of claim 1, wherein, The first auxiliary probe group comprises a first connecting plate and a first auxiliary probe, the first connecting plate is connected with the first piston rod, the first auxiliary probe is arranged on the 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 make the first auxiliary probe extend or retract; The second auxiliary probe group comprises a second connecting plate and a second auxiliary probe, the second connecting plate is connected with the second piston rod, the second auxiliary probe is arranged on the side of the second connecting plate away from the second piston rod, and the second connecting plate is driven by the second piston rod to make the second auxiliary probe extend or retract; The first connecting plate is provided with a first limiting groove, a first limiting piece is adapted to be inserted into the first limiting groove, and when the first auxiliary probe extends, the first limiting piece is inserted into the first limiting groove; The second connecting plate is provided with a second limiting groove, a second limiting piece is adapted to be inserted into the second limiting groove, and when the second auxiliary probe extends, the second limiting piece is inserted into the second limiting groove.

9. Drive assembly for an assay device according to claim 8, characterized in that The driving assembly comprises: The first clamping piece is configured to be movable towards or away from the first piston rod, when the first auxiliary probe extends, the first clamping piece moves towards the first piston rod for clamping the first piston rod; The second clamping piece is configured to be movable towards or away from the second piston rod, when the second auxiliary probe extends, the second clamping piece moves towards the second piston rod for clamping the second piston rod.

10. A testing device, characterized in that The driving assembly for calibrating the device comprises a first auxiliary probe group and a second auxiliary probe group; The tray is used for mounting an electric energy meter, and the first auxiliary probe group and the second auxiliary probe group are movable towards or away from the electric energy meter to realize calibration of the electric energy meter. ​

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