Detection device and detection system for solenoid pilot valve

Abstract

This application provides a testing device and system for electromagnetic pilot valves, relating to the field of electromagnetic pilot valve testing technology, and is used to improve the testing efficiency of electromagnetic pilot valves. The testing device includes: a fixed frame assembly, a testing platform, a testing cover plate assembly, a group of trays, a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, a first clamping block, a second clamping block, a third clamping block, a fourth clamping block, a first fixing block, a second fixing block, and multiple testing units. The testing platform is fixed on the fixed frame assembly, the testing cover plate assembly is disposed on the fixed frame assembly and located above the testing platform, the group of trays is disposed on the testing platform, the testing units are disposed on the testing cover plate assembly, and the fifth cylinder is disposed below the testing cover plate assembly.

Description

Technical Field

[0001] This application relates to the field of electromagnetic pilot valve testing technology, specifically to a testing device and system for electromagnetic pilot valves. Background Technology

[0002] The insulation resistance and magnetic field strength of intrinsically safe electromagnetic pilot valves for mining applications are crucial testing parameters during production and shipment. The pass rate of these two parameters directly affects product quality and safety, thus impacting the overall pass rate and market competitiveness. Currently, the traditional testing methods are as follows:

[0003] Insulation resistance testing: Each pilot valve is tested individually using a withstand voltage tester operated manually. While this process ensures the insulation performance of each product, its manual operation typically results in low testing efficiency.

[0004] Magnetic energy detection: Magnetic flux is detected using a handheld gaussmeter. Although this method can provide relatively accurate magnetic field strength readings, it is also inefficient due to the need for manual operation.

[0005] However, the shortcomings of the current method are obvious:

[0006] Low testing efficiency: Both testing steps are performed manually on each machine, which not only wastes time but also increases the production cycle and affects the overall production efficiency.

[0007] The process is cumbersome: because all testing tasks must be completed manually, the steps are complex and numerous. This cumbersome process undoubtedly increases the probability of errors, potentially leading to the release of substandard products.

[0008] High requirements are placed on operators: Operators must possess the corresponding professional knowledge and skills. Especially when performing withstand voltage tests, where the test voltage needs to reach 500V, even higher demands are placed on the operator's professionalism and sense of responsibility.

[0009] High labor costs: In today's economic environment, the cost of human resources continues to rise. The reliance on manual inspection not only increases the burden on business operations but also reduces overall cost-effectiveness.

[0010] Therefore, improving the detection efficiency and reducing the detection cost of electromagnetic pilot valves is an urgent problem to be solved. Summary of the Invention

[0011] To address the aforementioned problems, this application provides a detection device and system for electromagnetic pilot valves.

[0012] In a first aspect, a testing device for an electromagnetic pilot valve is provided, comprising: a fixed frame assembly, a testing platform, a testing cover plate assembly, a group of trays, a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, a first clamping block, a second clamping block, a third clamping block, a fourth clamping block, a first fixing block, a second fixing block, and multiple testing units. The testing platform is fixed to the fixed frame assembly, the testing cover plate assembly is disposed on the fixed frame assembly and located above the testing platform, the group of trays is disposed on the testing platform, the testing units are disposed on the testing cover plate assembly, and the fifth cylinder is disposed below the testing cover plate assembly.

[0013] Grouped trays are used to hold multiple electromagnetic pilot valves to be tested;

[0014] The testing platform has a first side, a second side, a third side, and a fourth side, with the first and third sides arranged opposite each other, and the second and fourth sides arranged opposite each other;

[0015] The first cylinder and the first clamping block are located on the first side. The first cylinder is connected to the first clamping block and is used to push the first clamping block to fix the group of pallets.

[0016] The second cylinder and the second clamping block are located on the third side. The second cylinder is connected to the second clamping block and is used to push the second clamping block to fix the group of pallets.

[0017] The third cylinder, the third clamping block, the fourth cylinder, and the fourth clamping block are located on the second side, and the first fixing block and the second fixing block are fixedly installed on the fourth side. The third cylinder is connected to the third clamping block, and the fourth cylinder is connected to the fourth clamping block. The third clamping block and the fourth clamping block cooperate with the first fixing block and the second fixing block to clamp the grouped pallets.

[0018] Furthermore, the detection device also includes: a first fixing plate, a second fixing plate, a third fixing plate, and a fourth fixing plate. The first fixing plate and the second fixing plate are disposed opposite each other on the first side to fix the first cylinder. The third fixing plate and the fourth fixing plate are disposed opposite each other on the third side to fix the second cylinder.

[0019] Furthermore, the detection unit includes: an insulation resistance detection probe, a first magnetic detection head, and a second magnetic detection head, which are located below the detection cover assembly;

[0020] Insulation resistance testing probes are used to test the insulation resistance of electromagnetic pilot valves;

[0021] The first and second magnetic detection heads are used to detect the magnetic field strength of the electromagnetic pilot valve.

[0022] Furthermore, the first cylinder and the second cylinder operate in parallel and synchronously, and the third cylinder and the fourth cylinder operate in parallel and synchronously.

[0023] Furthermore, the detection device also includes: an intake main pipe, an intake branch pipe, an oil-water separator, a first solenoid directional valve, a second solenoid directional valve, a third solenoid directional valve, a return pipe, a first pneumatic connector, a second pneumatic connector, and a manifold. The oil-water separator is connected to the manifold via the intake main pipe. The manifold is connected to the first, second, and third solenoid directional valves. The first solenoid directional valve is connected to the fifth cylinder via the intake branch pipe and the return pipe. The second solenoid directional valve is connected to the first and second cylinders via the first pneumatic connector, the intake branch pipe, and the return pipe. The third solenoid directional valve is connected to the third and fourth cylinders via the second pneumatic connector, the intake branch pipe, and the return pipe.

[0024] The intake manifold is used to input the gas source;

[0025] Oil-water separators are used to filter gas from the gas source;

[0026] The gas manifold is used for centralized gas supply and centralized exhaust to the first electromagnetic reversing valve, the second electromagnetic reversing valve and the third electromagnetic reversing valve.

[0027] The first, second and third solenoid directional valves are used to switch between intake and return air.

[0028] The first and second pneumatic connectors are used to split the gas source in the manifold into two paths, which enter the two intake branch pipes respectively, and to merge the gas source in the two return pipes into one path before returning to the manifold.

[0029] Furthermore, speed control valve connectors are provided on the first, second, third, fourth, and fifth cylinders, which are used to adjust the flow rate of the gas source.

[0030] Furthermore, the testing platform is equipped with a positioning ball, a connecting rod, a micro switch fixing plate, and a micro switch. The micro switch fixing plate is fixed below the testing platform, and the micro switch is fixed on the micro switch fixing plate. The positioning ball and the micro switch are connected by a connecting rod. When the positioning ball is pressed into the testing platform by a group of trays, the micro switch is opened to start the first cylinder, the second cylinder, the third cylinder, the fourth cylinder, and the fifth cylinder.

[0031] Furthermore, the grouped trays are equipped with multiple placement areas and labeling areas for placing electromagnetic pilot valves.

[0032] Furthermore, a first guide block is provided on the second side of the testing platform, and a second guide block is provided on the third side of the testing platform;

[0033] The first guide block and the second guide block work together to constrain the group of pallets.

[0034] Secondly, a detection system for an electromagnetic pilot valve is provided, comprising: a desktop, a frame body, a switch, and a detection device as described above, wherein the desktop is fixed to the frame body, and the detection device is disposed on the desktop; wherein,

[0035] The switches include: an emergency stop button, an start button, and a stop button.

[0036] The technical solution provided in this application can simultaneously test multiple solenoid pilot valves in a group tray, improving testing efficiency. Furthermore, this testing device enables automated testing; simply placing the solenoid pilot valve to be tested in the group tray and then placing the group tray on the testing platform initiates the testing, reducing the complexity of manual operation and simplifying the testing process. In addition, this testing device lowers the professional skill requirements for operators, enabling non-professionals to perform the testing work. Attached Figure Description

[0037] To more clearly illustrate some embodiments or technical solutions in the prior art of this specification, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic diagram of the structure of a detection device for an electromagnetic pilot valve provided in this application;

[0039] Figure 2 A schematic diagram of the structure of another detection device for an electromagnetic pilot valve provided in this application;

[0040] Figure 3 A schematic diagram of the structure of another detection device for an electromagnetic pilot valve provided in this application;

[0041] Figure 4 This application provides a schematic diagram of the structure of an electromagnetic pilot valve;

[0042] Figure 5 This application provides a structural schematic diagram of a grouped pallet;

[0043] Figure 6 This is a schematic diagram of the detection system for an electromagnetic pilot valve provided in this application. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in some embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on some embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings herein are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. It should be noted that the acquisition, storage, use, and processing of data in the technical solutions of this application comply with the relevant provisions of applicable laws and regulations.

[0046] like Figure 1 The diagram shown is a structural schematic of a testing device for an electromagnetic pilot valve provided in an embodiment of this application. The testing device includes: a fixed frame assembly 1, a testing platform 2, a testing cover plate assembly 3, a set of trays (not shown), a first cylinder 4, a second cylinder 5, a third cylinder 6, a fourth cylinder 7, a fifth cylinder 8, a first clamping block 9, a second clamping block 10, a third clamping block 11, a fourth clamping block 12, a first fixing block 13, a second fixing block 14, and multiple testing units 15. The testing platform 2 is fixed to the fixed frame assembly 1, the testing cover plate assembly 3 is disposed on the fixed frame assembly 1 and located above the testing platform 2, the set of trays is disposed on the testing platform 2, the testing units 15 are disposed on the testing cover plate assembly 3, and the fifth cylinder 8 is disposed below the testing cover plate assembly 3.

[0047] Grouped trays are used to hold multiple electromagnetic pilot valves to be tested;

[0048] The detection platform 2 has a first side, a second side, a third side and a fourth side, with the first side and the third side arranged opposite to each other, and the second side and the fourth side arranged opposite to each other;

[0049] The first cylinder 4 and the first clamping block 9 are located on the first side. The first cylinder 4 is connected to the first clamping block 9 and is used to push the first clamping block 9 to fix the group of pallets.

[0050] The second cylinder 5 and the second clamping block 10 are located on the third side. The second cylinder 5 is connected to the second clamping block 10 and is used to push the second clamping block 10 to fix the grouped pallets.

[0051] The third cylinder 6, the third clamping block 11, the fourth cylinder 7, and the fourth clamping block 12 are located on the second side. The first fixing block 13 and the second fixing block 14 are fixedly installed on the fourth side. The third cylinder 6 is connected to the third clamping block 11, and the fourth cylinder 7 is connected to the fourth clamping block 12. The third clamping block 11 and the fourth clamping block 12 cooperate with the first fixing block 13 and the second fixing block 14 to clamp the grouped pallets.

[0052] For example, the fixing bracket assembly 1 is also referred to as the cover plate fixing bracket assembly. The first clamping block 9 and the second clamping block 10 are located in the X-axis direction of the detection platform 2 and are also referred to as X-axis clamping blocks. The third clamping block 11 and the fourth clamping block 12 are located in the Y-axis direction of the detection platform 2 and are also referred to as Y-axis clamping blocks. Similarly, the first fixing block 13 and the second fixing block 14 are also referred to as Y-axis fixing and positioning blocks. It should be noted that this application does not limit the names of the various components.

[0053] The technical solution provided in this application can simultaneously test multiple solenoid pilot valves in a group tray, improving testing efficiency. Furthermore, this testing device enables automated testing; simply placing the solenoid pilot valve to be tested in the group tray and then placing the group tray on the testing platform initiates the testing, reducing the complexity of manual operation and simplifying the testing process. In addition, this testing device lowers the professional skill requirements for operators, enabling non-professionals to perform the testing work.

[0054] In some embodiments, such as Figure 1 As shown, the detection device also includes: a first fixing plate 16, a second fixing plate ( Figure 1 (not shown in the image), third fixing plate 17 and fourth fixing plate ( Figure 1 (Not shown in the image), the first fixing plate 16 and the second fixing plate are disposed opposite each other on the first side to fix the first cylinder 4, and the third fixing plate 17 and the fourth fixing plate are disposed opposite each other on the third side to fix the second cylinder 5.

[0055] Specifically, the first fixing plate 16, the second fixing plate, the third fixing plate 17, and the fourth fixing plate are placed vertically, with their upper edges forming a certain angle with the horizontal plane. The first fixing plate 16 and the second fixing plate are positioned opposite each other on the first side, with a certain distance between them. The first cylinder 4 is fixedly mounted on the upper edges of the first and second fixing plates. The third fixing plate 17 and the fourth fixing plate are positioned opposite each other on the third side, with a certain distance between them. The second cylinder 5 is fixedly mounted on the upper edges of the third and fourth fixing plates.

[0056] For example, such as Figure 2 The diagram shown is a structural schematic of another electromagnetic pilot valve detection device provided in an embodiment of this application. First fixing plate 16, second fixing plate ( Figure 2 (Not shown) is fixedly installed on the first side of the detection platform 2, cooperating with the first cylinder 4, and allowing the first clamping block 9 to be pushed obliquely upward along the trajectory formed by the first fixing plate 16 and the second fixing plate when pushed by the first cylinder 4. Similarly, the third fixing plate 17 and the fourth fixing plate ( Figure 2 (Not shown) is fixedly installed on the third side of the detection platform 2, cooperating with the second cylinder 5 to fix it, and allowing the second clamping block 10 to be pushed obliquely upward along the trajectory formed by the third fixing plate 17 and the fourth fixing plate when pushed by the second cylinder 5. The fixing plate is also called the cylinder fixing plate; for example, the first fixing plate 16 can also be called the first cylinder fixing plate, and the second fixing plate, third fixing plate 17, and fourth fixing plate are similar.

[0057] In this way, by setting multiple fixing plates, it is ensured that the cylinder will not shift or tilt during operation, thus guaranteeing the accuracy and reliability of the cylinder pushing the clamping block. In addition, by setting multiple fixing plates, the movement trajectory of the cylinder and the clamping block is precisely defined, allowing the clamping block to move accurately diagonally upward along a predetermined path, ensuring the positioning accuracy of the grouped pallets.

[0058] In some embodiments, such as Figure 3 As shown, the detection unit 15 includes: an insulation resistance detection probe 1501, a first magnetic detection head 1502 and a second magnetic detection head (not shown in the figure), and the insulation resistance detection probe 1501, the first magnetic detection head 1502 and the second magnetic detection head are disposed below the detection cover plate assembly 3;

[0059] The insulation resistance testing probe 1501 is used to test the insulation resistance of an electromagnetic pilot valve.

[0060] The first magnetic detection head 1502 and the second magnetic detection head are used to detect the magnetic field strength of the electromagnetic pilot valve.

[0061] It should be noted that the number of detection units 15 in the detection device for the electromagnetic pilot valve is consistent with the maximum number of electromagnetic pilot valves that can be placed in the group tray. For example... Figure 2 As shown, the detection device includes 6 detection units 15, so the number of electromagnetic pilot valves that can be placed in the grouped tray is 6. Specifically, in Figure 2 In the middle, the first magnetic detection head 1502 and the second magnetic detection head are positioned in front of the insulation resistance detection contact pin 1501.

[0062] In some embodiments, such as Figure 3 As shown, the first magnetic detection head 1502 and the second magnetic detection head ( Figure 2 (Not shown) is fixed to the detection cover assembly 3 via the first connecting member 1503. Similarly, the insulation resistance detection probe 1501 is fixed to the detection cover assembly 3 via the second connecting member 1504.

[0063] It is understood that the detection unit 15 is used to detect the electromagnetic pilot valve to be tested, and the first magnetic detection head 1502, the second magnetic detection head, and the insulation resistance detection probe 1501 in the detection unit 15 correspond to the detection point of the electromagnetic pilot valve. For example... Figure 4 The diagram shown is a structural schematic of an electromagnetic pilot valve provided in an embodiment of this application. The top of the electromagnetic pilot valve includes a first magnetic force detection point 401, a second magnetic force detection point 402, and an insulation resistance detection point 403. During the detection process, the first magnetic force detection head 1502 in the detection unit 15 contacts the first magnetic force detection point 401 of the electromagnetic pilot valve, and the second magnetic force detection head contacts the second magnetic force detection point 402 of the electromagnetic pilot valve to detect the magnetic field strength of the electromagnetic pilot valve. Correspondingly, the insulation resistance detection probe 1501 in the detection unit 15 contacts the insulation resistance detection point 403 of the electromagnetic pilot valve to detect the insulation resistance of the electromagnetic pilot valve. Furthermore, each electromagnetic pilot valve has a unique identification code for identification. For example, the electromagnetic pilot valve can be an intrinsically safe electromagnetic pilot valve for mining applications, or it can be other types of electromagnetic pilot valves; this application does not limit this.

[0064] In some embodiments, such as Figure 3 As shown, a circuit board 301 and components 302 can be installed on the detection cover assembly 3, wherein the components 302 are installed on the circuit board 301. Specifically, multiple components 302 are installed on the circuit board 301 to cooperate with the detection unit 15 to complete the detection of the electromagnetic pilot valve to be tested.

[0065] For example, such as Figure 3As shown, the second hinge 102 is fixed to the fixed frame assembly 1, and the detection cover assembly 3 is mounted on the fixed frame assembly 1 via the second hinge 102. The movable end (retractable part) of the fifth cylinder 8 is mounted below the detection cover assembly 3 via the third hinge 103, and the fixed end (non-retractable part) of the fifth cylinder 8 is mounted on the fixed frame assembly 1 via the first hinge 101. When the fifth cylinder 8 is activated, the piston extension and retraction of the fifth cylinder 8 provides power for the detection cover assembly 3 to rotate around the second hinge 102, thereby adjusting the angle between the detection cover assembly 3 and the fixed frame assembly 1, so that the first magnetic detection head 1502 and the second magnetic detection head (…) located below the detection cover assembly 3… Figure 3 (Not shown in the image) and the insulation resistance detection probe 1501 are connected in contact with the electromagnetic pilot valve to realize the detection of the electromagnetic pilot valve.

[0066] In some embodiments, the first cylinder 4, the second cylinder 5, the third cylinder 6, and the fourth cylinder 7 each include a movable baffle. For example... Figure 1 As shown, taking the second cylinder 5 as an example, the second clamping block 10 is fixed on the movable baffle 501 of the second cylinder 5. When the second cylinder 5 is started, the piston extension and retraction of the second cylinder 5 provides power to the second clamping block 10, so that the second clamping block 10 pushes the grouped pallets.

[0067] In some embodiments, the first cylinder 4 and the second cylinder 5 operate in parallel and synchronously, and the third cylinder 6 and the fourth cylinder 7 operate in parallel and synchronously.

[0068] It is understandable that, such as Figure 2 As shown, the first cylinder 4 and the second cylinder 5 operate in parallel and synchronously. The first cylinder 4 pushes the first clamping block 9 diagonally upwards, causing the first clamping block 9 to push the grouped pallet, providing a leftward force to the grouped pallet. The second cylinder 5 pushes the second clamping block 10 diagonally upwards, causing the second clamping block 10 to push the grouped pallet, providing a rightward force to the grouped pallet. The parallel and synchronous operation of the first cylinder 4 and the second cylinder 5 can improve the positioning accuracy of the grouped pallet, ensuring that the grouped pallet is located at the corresponding detection position in the X-axis direction. Similarly, although the third cylinder 6 and the fourth cylinder 7 are on the same side, their parallel and synchronous operation can avoid the grouped pallet from shifting during the pushing process, ensuring that the grouped pallet is located at the corresponding detection position in the Y-axis direction.

[0069] In some embodiments, such as Figure 3As shown, the detection device also includes: an intake main pipe 18, an intake branch pipe 19, an oil-water separator 20, a first solenoid directional valve 21, a second solenoid directional valve 22, a third solenoid directional valve 23, a return pipe 24, a first pneumatic connector 25, a second pneumatic connector 26, and a manifold 27. The oil-water separator 20 is connected to the manifold 27 via the intake main pipe 18. The manifold 27 is connected to the first solenoid directional valve 21, the second solenoid directional valve 22, and the third solenoid directional valve 23. The first solenoid directional valve 21 is connected to the fifth cylinder 8 via the intake branch pipe 19 and the return pipe 24. The second solenoid directional valve 22 is connected to the first cylinder 4 and the second cylinder 5 via the first pneumatic connector 25, the intake branch pipe 19, and the return pipe 24. The third solenoid directional valve 23 is connected to the third cylinder 6 and the fourth cylinder 7 via the second pneumatic connector 26, the intake branch pipe 19, and the return pipe 24.

[0070] The intake manifold 18 is used to input the gas source;

[0071] Oil-water separator 20 is used to filter gas from the gas source;

[0072] The gas manifold 27 is used for centralized gas supply and centralized exhaust to the first electromagnetic reversing valve 21, the second electromagnetic reversing valve 22 and the third electromagnetic reversing valve 23.

[0073] The first solenoid directional valve 21, the second solenoid directional valve 22 and the third solenoid directional valve 23 are used to switch between intake and return air.

[0074] The first pneumatic connector 25 and the second pneumatic connector 26 are used to divide the gas source in the gas manifold 27 into two paths, which enter the two inlet branch pipes respectively, and to merge the gas source in the two return pipes into one path and return to the gas manifold 27.

[0075] Specifically, in practical applications, the gas source is input to the oil-water separator 20 through the intake pipe 18. After being filtered by the oil-water separator 20, the gas source enters the gas manifold 27 through the intake pipe 18. The gas manifold 27 inputs the gas source to the first solenoid directional valve 21, the second solenoid directional valve 22, and the third solenoid directional valve 23 respectively. The first solenoid directional valve 21 inputs the gas source to the fifth cylinder 8, the second solenoid directional valve 22 inputs the gas source to the first cylinder 4 and the second cylinder 5, and the third solenoid directional valve 23 inputs the gas source to the third cylinder 6 and the fourth cylinder 7. Among them, the first cylinder 4 and the second cylinder 5 operate in parallel and synchronously, the third cylinder 6 and the fourth cylinder 7 operate in parallel and synchronously, and the fifth cylinder 8 operates independently.

[0076] For example, consider the third electromagnetic reversing valve 23 synchronously controlling the third cylinder 6 and the fourth cylinder 7 via the second pneumatic connector 26. The third electromagnetic reversing valve 23 divides the gas source in the manifold 27 into two paths via the second pneumatic connector 26, which enter two intake branch pipes, specifically the first intake branch pipe 1901 and the second intake branch pipe 1902. The third electromagnetic reversing valve 23 inputs gas source into the third cylinder 6 through the first intake branch pipe 1901 and into the fourth cylinder 7 through the second intake branch pipe 1902. Further, the third cylinder 6 discharges the gas source through the first return pipe 2401, and the fourth cylinder 7 discharges the gas source through the second return pipe 2402. The second pneumatic connector 26 merges the gas source in the first return pipe 2401 and the second return pipe 2402 into one path and returns it to the manifold 27. In this way, the third electromagnetic reversing valve 23 can simultaneously control the third cylinder 6 and the fourth cylinder 7, enabling the third cylinder 6 and the fourth cylinder 7 to operate in parallel and synchronously. Similarly, the second electromagnetic reversing valve 22 controls the first cylinder 4 and the second cylinder 5 simultaneously through the first pneumatic switch, enabling the first cylinder 4 and the second cylinder 5 to operate in parallel and synchronously, which will not be elaborated here.

[0077] It should be noted that the solenoid directional valve achieves the extension and retraction of the cylinder by switching between the cylinder's air intake and exhaust. When the cylinder needs to extend, the solenoid directional valve inputs air into the cylinder; when the cylinder needs to retract, the solenoid directional valve expels the air from the cylinder. In this way, the switching response of the solenoid directional valve allows for precise control of the cylinder's movement and can also coordinate the movement of multiple cylinders, improving the positioning accuracy of the grouped trays and the detection precision of the solenoid pilot valve.

[0078] In some embodiments, the oil-water separator 20 is also used to regulate the gas supply pressure. It should be noted that different gas supply pressures may be required in different components through which the gas source passes in the detection device. Regulating the gas supply pressure by the oil-water separator 20 can ensure the stable operation of the detection device, and appropriate adjustment of the gas supply pressure can also ensure that the detection device works in the optimal state, thereby ensuring the stability and accuracy of the detection solenoid pilot valve.

[0079] In some embodiments, speed control valve connectors are provided on the first cylinder 4, the second cylinder 5, the third cylinder 6, the fourth cylinder 7 and the fifth cylinder 8. The speed control valve connectors are used to adjust the flow rate of the gas source.

[0080] For example, such as Figure 3As shown, taking the fourth cylinder 7 as an example, the air inlet of the fourth cylinder 7 is provided with a first speed control valve connector 701, one end of which is connected to the air inlet of the fourth cylinder 7 and the other end is connected to the second air inlet branch pipe 1902. The air outlet of the fourth cylinder 7 is provided with a second speed control valve connector 702, one end of which is connected to the air outlet of the fourth cylinder 7 and the other end is connected to the second return air pipe 2402.

[0081] In some embodiments, the detection platform 2 is provided with a positioning ball, a connecting rod, a micro switch fixing plate, and a micro switch. The micro switch fixing plate is fixed below the detection platform 2, and the micro switch is fixed on the micro switch fixing plate. The positioning ball and the micro switch are connected by the connecting rod. When the positioning ball is pressed into the detection platform 2 by a group of trays, the micro switch is opened to start the first cylinder 4, the second cylinder 5, the third cylinder 6, the fourth cylinder 7, and the fifth cylinder 8.

[0082] Specifically, when the grouped trays are placed on the detection platform 2, the grouped trays press down on the positioning ball, causing the positioning ball to sink by a certain displacement. This displacement is then vertically transmitted to the micro switch via a connecting rod. When the micro switch is activated, the second electromagnetic reversing valve 22 and the third electromagnetic reversing valve 23 are activated first. The second electromagnetic reversing valve 22 inputs gas to the first cylinder 4 and the second cylinder 5, while the third electromagnetic reversing valve 23 inputs gas to the third cylinder 6 and the fourth cylinder 7, thus fixing the grouped trays in the corresponding detection areas. Immediately afterwards, the first electromagnetic reversing valve 21 is activated, inputting gas to the fifth cylinder 8 and pulling down the detection cover assembly 3, so that its detection unit 15 contacts the electromagnetic pilot valve on the grouped tray to detect the electromagnetic pilot valve.

[0083] For example, the detection platform 2 can be set with multiple positioning beads, such as Figure 1 As shown, the detection platform 2 is equipped with a first positioning ball 28 and a second positioning ball 29, located on the first and third sides of the detection platform 2, respectively. Correspondingly, the detection platform 2 also has multiple connecting rods, a micro switch fixing plate, and a micro switch. Specifically, as shown... Figure 3 As shown, taking the first positioning ball 28 as an example, the first positioning ball 28 is disposed on the detection platform 2, the first micro switch fixing plate 30 is fixed below the detection platform 2, the first micro switch 31 is fixed on the first micro switch fixing plate 30, and the first positioning ball 28 and the first micro switch 31 are connected by the first connecting rod 32. When the first positioning ball 28 and the second positioning ball 29 are pressed into the detection platform by the group tray, the second micro switch corresponding to the first micro switch 31 and the second positioning ball 29 is opened to start the first cylinder 4, the second cylinder 5, the third cylinder 6, the fourth cylinder 7 and the fifth cylinder 8.

[0084] In some embodiments, the grouped tray is provided with a plurality of placement areas 201 and marking areas 202 for placing electromagnetic pilot valves.

[0085] Specifically, such as Figure 5 As shown, Figure 5 The illustrated group tray has six placement areas 201, each capable of holding up to six solenoid pilot valves to be tested. Above each placement area 201 is an identification area 202, used to assign a unique identifier to the group tray. Operators can scan the unique identifier in the identification area 202 of the group tray using a barcode scanner (such as a barcode scanner) to bind the test data of the solenoid pilot valve in that group tray to the unique identifier of that group tray, and then upload the test data to the server for storage, or upload the data indicating that the test has passed to the server for storage.

[0086] In some embodiments, a first guide block is provided on the second side of the detection platform 2, and a second guide block is provided on the third side of the detection platform 2;

[0087] The first guide block and the second guide block work together to constrain the group of pallets.

[0088] For example, the first guide block and the second guide block are used to ensure that when the group of trays is pushed into the testing table, it can move along the correct direction and path so that other components (such as the first cylinder 4, the second cylinder 5, the third cylinder 6, the fourth cylinder 7, etc.) can clamp and position the group of trays so that they can be correctly aligned with the testing unit 15 and ensure the smooth progress of the testing process.

[0089] like Figure 6 As shown, an embodiment of this application provides a detection system for an electromagnetic pilot valve, comprising: a desktop 33, a frame body 34, a switch, and a detection device for the electromagnetic pilot valve. The desktop 33 is fixed to the frame body 34, and the detection device for the electromagnetic pilot valve is disposed on the desktop 33; wherein,

[0090] The switch includes: an emergency stop button 35, an open button 36, and a stop button 37.

[0091] For example, such as Figure 6 As shown, the mounting bracket assembly 1 in the testing device is fixed to the frame body 34 to secure the first hinge 101, the second hinge 102, and the third hinge 103. The switch is located below the desktop 33 and fixed to the frame body 34. The button in the switch is connected to the testing device and used to control it. Specifically, the start button 36 is used to start the testing device, the stop button 37 is used to stop the testing device, and the emergency stop button 35 is used to brake the testing device in an emergency. The frame body 34 can be an aluminum alloy frame body.

[0092] In some embodiments, the first cylinder 4 and the second cylinder 5 of the detection device are disposed below the tabletop 33.

[0093] Specifically, such as Figure 6 As shown, the first cylinder 4 and the second cylinder 5 of the testing device are positioned below the tabletop 33. The testing platform 2 of the testing device is flush with the tabletop 33 of the testing system, and all components located below the testing platform 2 are also positioned below the tabletop 33. This allows operators to directly push groups of trays from the tabletop 33 onto the testing platform 2, improving testing efficiency and reducing manpower. If the first cylinder 4 and the second cylinder 5 were positioned above the tabletop 33, operators would need to lift the groups of trays and place them onto the testing platform 2, increasing manpower and reducing testing efficiency.

[0094] It should be noted that when the electromagnetic pilot valve detection system is not in operation, cylinders 4, 5, 6, 7, and 8 are all in a relaxed state. Before formal testing, the electromagnetic pilot valves are placed in groups of six or other quantities (less than or equal to the maximum number of units in the group tray). The operator pushes the group trays along the guide rails on the table 33 into the testing platform 2. The group trays are constrained by the first and second guide blocks on both sides of the testing platform 2. The group trays are pushed onto the testing platform 2, pressing the first and second positioning beads to trigger the first and second microswitches. At this time, the electromagnetic pilot valve detection device unlocks. If the group trays are not pushed in or are pushed in incorrectly, and the first and second positioning beads are not pressed, the electromagnetic pilot valve detection device remains locked and cannot be used.

[0095] Next, the operator presses the start button 36, activating the first cylinder 4, the second cylinder 5, the third cylinder 6, and the fourth cylinder 7 to push the group of pallets into the pallet placement area of ​​the testing platform 2. Specifically, during the pushing process, the first cylinder 4 and the second cylinder 5 operate synchronously, extending their extensions to push the clamping blocks and clamp the group of pallets, thus completing the positioning and clamping in the X-axis direction. The third cylinder 6 and the fourth cylinder 7 operate synchronously, extending their extensions to push the clamping blocks, which cooperate with the first fixing block 13 and the second fixing block 14 to clamp the group of pallets, thus completing the positioning and clamping in the Y-axis direction.

[0096] After the group of pallets is clamped and positioned, the fifth cylinder 8 starts to operate. By retracting, it pulls the detection cover assembly 3 to the preset position so that the insulation resistance detection probe 1501, the first magnetic detection head 1502 and the second magnetic detection head in the detection unit 15 can fully contact the insulation resistance detection point 403, the first magnetic detection point 401 and the second magnetic detection point 402 of the electromagnetic pilot valve, so as to complete the preparation for formal testing.

[0097] Finally, staff checked whether the grouped trays were in the preset positions and whether the relevant electrical connections were normal. After ensuring the grouped trays were in the preset positions and the electrical connections were normal, staff scanned the unique identification code of each solenoid pilot valve in the grouped trays using a barcode scanner. This linked the test data of each solenoid pilot valve to the unique identification code, and all qualified test data was uploaded to the server and saved.

[0098] In some embodiments, the detection unit 15 can also measure the current, magnetic flux and insulation withstand voltage of the electromagnetic pilot valve.

[0099] Specifically, the detection unit 15 is connected to a programmable logic controller (PLC). The PLC issues control commands to energize the electromagnetic pilot valve connected to the detection unit 15. When the relevant interface of the electromagnetic pilot valve is energized, the magnetic flux detection module corresponding to that interface can detect the magnetic force, and after amplification and filtering, input it to the PLC to obtain the magnetic flux of the electromagnetic pilot valve. At the same time, the current detection circuit can also detect the current of the interface and input it to the PLC to obtain the current of the electromagnetic pilot valve. In addition, the PLC issues control commands to connect the positive and negative terminals of the electromagnetic pilot valve to the insulation tester and cut off the power supply circuit of the electromagnetic pilot valve. At the same time, the insulation tester tests the electromagnetic pilot valve and inputs the test results to the PLC to obtain the insulation voltage of the electromagnetic pilot valve.

[0100] In some embodiments, the PLC can be connected to a host computer via a network to perform data visualization, data analysis, data uploading and storage on the host computer, allowing staff to more intuitively observe the various indicators of the electromagnetic pilot valve for subsequent processing.

[0101] The technical solution provided in this application can simultaneously test multiple solenoid pilot valves in a group tray, improving testing efficiency. Furthermore, this testing device enables automated testing; simply placing the solenoid pilot valve to be tested in the group tray and then placing the group tray on the testing platform initiates the testing, reducing the complexity of manual operation and simplifying the testing process. In addition, this testing device lowers the professional skill requirements for operators, enabling non-professionals to perform the testing work.

Claims

1. A detection device for an electromagnetic pilot valve, characterized in that, include: The system comprises a fixed frame assembly, a testing platform, a testing cover plate assembly, a set of trays, a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, a first clamping block, a second clamping block, a third clamping block, a fourth clamping block, a first fixing block, a second fixing block, and multiple testing units. The testing platform is fixed to the fixed frame assembly. The testing cover plate assembly is disposed on the fixed frame assembly and located above the testing platform. The set of trays is disposed on the testing platform. The testing units are disposed on the testing cover plate assembly. The fifth cylinder is disposed below the testing cover plate assembly. The grouped trays are used to hold multiple electromagnetic pilot valves to be tested; The detection platform has a first side, a second side, a third side and a fourth side, wherein the first side and the third side are arranged opposite to each other, and the second side and the fourth side are arranged opposite to each other. The first cylinder and the first clamping block are located on the first side. The first cylinder is connected to the first clamping block and is used to push the first clamping block to fix the grouped pallets. The second cylinder and the second clamping block are located on the third side. The second cylinder is connected to the second clamping block and is used to push the second clamping block to fix the grouped pallets. The third cylinder, the third clamping block, the fourth cylinder, and the fourth clamping block are located on the second side, and the first fixing block and the second fixing block are fixedly disposed on the fourth side. The third cylinder is connected to the third clamping block, and the fourth cylinder is connected to the fourth clamping block. The third clamping block and the fourth clamping block cooperate with the first fixing block and the second fixing block to clamp the grouped pallets. The detection device further includes: a main intake pipe, an intake branch pipe, an oil-water separator, a first solenoid directional valve, a second solenoid directional valve, a third solenoid directional valve, a return pipe, a first pneumatic connector, a second pneumatic connector, and a manifold. The oil-water separator is connected to the manifold via the main intake pipe. The manifold is connected to the first, second, and third solenoid directional valves. The first solenoid directional valve is connected to the fifth cylinder via the intake branch pipe and the return pipe. The second solenoid directional valve is connected to the first and second cylinders via the first pneumatic connector, the intake branch pipe, and the return pipe. The third solenoid directional valve is connected to the third and fourth cylinders via the second pneumatic connector, the intake branch pipe, and the return pipe. The main intake pipe is used to input the gas source; The oil-water separator is used to filter the gas source gas; The gas manifold is used to centrally supply and exhaust gas to the first electromagnetic reversing valve, the second electromagnetic reversing valve, and the third electromagnetic reversing valve. The first electromagnetic reversing valve, the second electromagnetic reversing valve, and the third electromagnetic reversing valve are used to switch between intake and return air. The first pneumatic connector and the second pneumatic connector are used to divide the gas source in the gas manifold into two paths, which enter two separate inlet branch pipes, and to merge the gas source in the two return pipes into one path before returning to the gas manifold.

2. The detection device according to claim 1, characterized in that, The detection device further includes: a first fixing plate, a second fixing plate, a third fixing plate, and a fourth fixing plate. The first fixing plate and the second fixing plate are disposed opposite to each other on the first side to fix the first cylinder. The third fixing plate and the fourth fixing plate are disposed opposite to each other on the third side to fix the second cylinder.

3. The detection device according to claim 1, characterized in that, The detection unit includes: an insulation resistance detection probe, a first magnetic detection head, and a second magnetic detection head, wherein the insulation resistance detection probe, the first magnetic detection head, and the second magnetic detection head are disposed below the detection cover plate assembly; The insulation resistance detection probe is used to detect the insulation resistance of the electromagnetic pilot valve; The first magnetic detection head and the second magnetic detection head are used to detect the magnetic field strength of the electromagnetic pilot valve.

4. The detection device according to claim 1, characterized in that, The first cylinder and the second cylinder operate in parallel and synchronously, and the third cylinder and the fourth cylinder operate in parallel and synchronously.

5. The detection device according to claim 1, characterized in that, Each of the first cylinder, the second cylinder, the third cylinder, the fourth cylinder, and the fifth cylinder is equipped with a speed control valve connector, which is used to adjust the flow rate of the gas source.

6. The detection device according to claim 1, characterized in that, The testing platform is equipped with a positioning ball, a connecting rod, a micro switch fixing plate, and a micro switch. The micro switch fixing plate is fixed below the testing platform, and the micro switch is fixed on the micro switch fixing plate. The positioning ball and the micro switch are connected through the connecting rod. When the positioning ball is pressed into the testing platform by the grouped trays, the micro switch opens to activate the first cylinder, the second cylinder, the third cylinder, the fourth cylinder, and the fifth cylinder.

7. The detection device according to claim 1, characterized in that, The grouped trays are provided with multiple placement areas and labeling areas for placing electromagnetic pilot valves.

8. The detection device according to claim 1, characterized in that, A first guide block is provided on the second side of the detection platform, and a second guide block is provided on the third side of the detection platform; The first guide block and the second guide block cooperate to constrain the grouped pallets.

9. A detection system for an electromagnetic pilot valve, characterized in that, include: The system comprises a desktop, a frame body, a switch, and a detection device as described in any one of claims 1-8, wherein the desktop is fixed to the frame body, and the detection device is disposed on the desktop; wherein... The switch includes: an emergency stop button, an start button, and a stop button.

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