Relay strong suction tooling

Abstract

The utility model relates to relay technology field especially relay strong suction tool. Including tool shell, the mode switch is provided with on tool shell, the on component for the relay contact point conduction of waiting for the repair is equipped in tool shell, the mode switch with on component electricity is connected to adjust the on state of on component, the bottom of tool shell is provided with the mounting structure for with the mounting seat of waiting for the repair relay adaptive connection, when waiting for the repair relay cannot normally attract and lead to its contact point to be unable to conduct, through mounting structure with tool shell is assembled on the mounting seat of waiting for the repair relay, and through mode switch adjustment on component to with the on state of waiting for the repair relay model matching, to forcibly realize the conduction of corresponding contact point of waiting for the repair relay. Can adapt to multiple model relays, need not to rely on bypass operation to be able to fast forced on general contact point.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a relay strong-actuation tooling. Background Technology

[0002] In the operating system of the CRH380B platform EMU, the relay is the core control component of the critical loop. It generates magnetic force through internal coil power to achieve contact closing, thereby conducting the critical loop and ensuring the normal operation of the EMU's core functions such as traction and control.

[0003] However, in actual operation, these relays often cause critical loop interruptions due to two core issues: First, when the relay itself malfunctions or the coil power supply is abnormal, its normally open contacts cannot close properly, directly causing the critical loop to break. If a traditional bypass operation is used to temporarily connect the loop, it is easy to trigger a chain reaction such as subsequent speed limits on the EMU. Second, there are multiple models of relays used in EMUs, and the contact combinations and conduction logic of different models of relays are different. Existing emergency maintenance tools need to be designed separately for different models, which has poor versatility and cannot meet the needs of EMUs to quickly resume operation.

[0004] Therefore, a relay strong-pull tooling is needed that can be adapted to multiple relay models and can quickly force open the normally open contacts without relying on bypass operation, thus avoiding subsequent operational cascading problems. Utility Model Content

[0005] To address the issue of being able to adapt to multiple relay models and quickly force open normally open contacts without relying on bypass operation, this utility model provides a relay forced-opening fixture.

[0006] In a first aspect, this utility model provides a relay forced-action fixture, comprising a fixture housing, a mode switching switch on the fixture housing, and a conduction component inside the fixture housing for conducting the contacts of the relay to be repaired. The mode switching switch is electrically connected to the conduction component to adjust the conduction state of the conduction component. The bottom of the fixture housing is provided with a mounting structure for fitting and connecting with the mounting base of the relay to be repaired. When the relay to be repaired cannot engage normally, causing its contacts to be unable to conduct, the fixture housing is assembled onto the mounting base of the relay to be repaired through the mounting structure, and the conduction component is adjusted to a conduction state matching the model of the relay to be repaired through the mode switching switch, so as to forcibly achieve the conduction of the corresponding contacts of the relay to be repaired.

[0007] Furthermore, the mode switching switch is located on the top of the tooling housing, and the mode switching switch is a push-button switching component. By pressing different ends, the conducting component is driven to switch to different conducting states. The tooling housing is provided with a status indicator to display the current conducting state of the mode switching switch.

[0008] Furthermore, the conductive assembly includes conductive posts for connecting the terminals of the relay to be repaired, and conductive elements for connecting different conductive posts. The mode switching switch adjusts the conductive path of the conductive assembly by changing the connection relationship between the conductive elements and the conductive posts. When the conductive assembly is in different connected states, the conductive elements make the connected conductive posts conductive, so as to simulate the contact conduction effect when the relay to be repaired is normally engaged.

[0009] Furthermore, the mounting structure is a cylindrical plug contact angle adapted to the mounting base of the relay to be repaired. The plug contact angle is circumferentially distributed. The conductive post is connected to the plug contact angle. The plug contact angle is mated with the relay mounting base. The conductive post corresponds to the wiring terminal on the mounting base.

[0010] Furthermore, there are 11 conductive posts, numbered 1-11 respectively, wherein conductive post 2 is closedly connected to conductive post 6, conductive post 3 is closedly connected to conductive post 5, conductive post 9 is connected to conductive post 8 through a switch, and conductive post 10 is connected to conductive post 7 through a switch.

[0011] Furthermore, the mode switching switch has at least a first switching terminal and a second switching terminal. When the first switching terminal is pressed, the conducting component switches to the conducting state of the relay to be repaired that is adapted to the first type of contact combination. When the second switching terminal is pressed, the conducting component switches to the conducting state of the relay to be repaired that is adapted to the second type of contact combination.

[0012] Furthermore, when the mode switching switch is in the first switching position, conductive post 9 is closed and connected to conductive post 8, and conductive post 10 is closed and connected to conductive post 7.

[0013] Furthermore, when the mode switching switch is in the second switching position, conductive post 9 is disconnected from conductive post 8, and conductive post 10 is disconnected from conductive post 7.

[0014] Furthermore, the bottom of the tooling housing is provided with a label, which corresponds to the insertion contact angle. The bottom of the tooling housing is provided with a guide post, which is located at the center of the circle containing all the insertion contact angles.

[0015] Furthermore, the mode switching switch is connected to a status indicator light, which illuminates when the mode switching switch is in the state of pressing the first switching terminal.

[0016] In summary, this utility model has the following beneficial technical effects: 1. This utility model enables compatibility with multiple relay models, reducing emergency tool costs and improving response efficiency. By setting a mode switching switch with a first switching terminal and a second switching terminal, and electrically connecting it to the conducting component, the connection relationship between the conductive element and 11 labeled conductive posts can be changed by pressing different switching terminals, thus adapting to relays with different contact combinations to be repaired. There is no need to design separate emergency tools for a single relay model, significantly reducing the types and costs of maintenance tools. Furthermore, no additional selection of compatible tools is required during emergencies, significantly improving the emergency response speed for relay failures.

[0017] 2. This utility model directly assembles the tooling housing onto the mounting base of the fault relay through an installation structure, eliminating the need for temporary wiring bypass operations as in traditional methods. Operation is simple and intuitive. Furthermore, the indicator lights on the tooling housing provide feedback on the current status of the conducting components, helping operators quickly confirm whether the mode switching is correct. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a relay strong-suction tool according to an embodiment of the present utility model.

[0019] Figure 2 This is another structural schematic diagram of a relay strong-suction tool according to an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the bottom surface of a relay strong-suction tool according to an embodiment of the present utility model.

[0021] Figure 4 This is an internal circuit diagram of the RB4P-G40DC type relay and the relay strong-pull tooling according to an embodiment of this utility model.

[0022] Figure 5 This is an internal circuit diagram of the RB3P-G30DC type relay and the relay strong-pull tooling according to an embodiment of this utility model.

[0023] Figure 6 This is an internal circuit diagram of the RB3P-G21DC type relay and the relay strong-pull tooling according to an embodiment of this utility model.

[0024] Figure 7 This is an internal circuit diagram of the RB4P-G22DC type relay and the relay strong-pull tooling according to an embodiment of this utility model.

[0025] The components include: 1. Tooling housing; 2. Mode switching switch; 3. Insert contact angle; 4. Guide post. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1 Reference Figure 1 This embodiment provides a relay forced-action fixture, including a fixture housing 1. The fixture housing 1 is an integrated structure, with a sealed chamber inside for accommodating a conductive component. The relay forced-action fixture can directly replace the relay to be repaired and be installed on the original mounting base. A mode switching switch 2 is provided on the fixture housing 1. A conductive component for turning on the contacts of the relay to be repaired is provided inside the fixture housing 1. The mode switching switch 2 is electrically connected to the conductive component to adjust the conductive state of the conductive component. The bottom of the fixture housing 1 is provided with a mounting structure for adapting and connecting to the mounting base of the relay to be repaired. When the relay to be repaired cannot be properly engaged, causing its contacts to be unable to conduct, the fixture housing 1 is assembled onto the mounting base of the relay to be repaired through the mounting structure, and the conductive component is adjusted to a conductive state matching the model of the relay to be repaired through the mode switching switch 2, so as to forcibly realize the conduction of the corresponding contacts of the relay to be repaired.

[0028] Reference Figure 1 The mode switching switch 2 is located on the top of the tooling housing 1, specifically in the central area of ​​the top of the tooling housing 1, which is convenient for one-handed operation by the operator. The mode switching switch 2 is a press-type switching component, which includes a pressable first switching end and a second switching end. A reset spring is provided between the two ends. After pressing one end, it can be reset by the spring. By pressing different ends, the conducting component can be driven to switch to different conducting states. The tooling housing 1 is provided with a status indicator. The indicator is the characters "1" and "0" etched on both sides of the mode switching switch 2, which correspond to the tooling modes corresponding to the first switching end and the second switching end, respectively. The surface of the indicator is coated with wear-resistant ink to prevent wear and blurring after long-term use, and is used to display the current conducting state of the mode switching switch 2.

[0029] Reference Figure 2 and Figure 3The conductive assembly includes conductive posts for connecting to the terminals of the relay to be repaired. An insulating sleeve is fitted around the conductive posts to prevent short circuits between adjacent conductive posts. It also includes conductive components for connecting different conductive posts. These conductive components are made of highly conductive metal, and their connection points are fixed by crimping or welding to ensure no contact resistance between the conductive components and the conductive posts, achieving zero-resistance conduction. This accurately simulates the contact conduction effect when the relay to be repaired is normally engaged. The mode switching switch 2 adjusts the conduction path of the conductive assembly by changing the connection relationship between the conductive components and the conductive posts. Specifically, this is achieved by displacing the metal contact piece inside the mode switching switch 2, allowing the conductive components to selectively contact or separate from the target conductive posts. When the conductive assembly is in different connected states, the conductive components enable conduction between connected conductive posts, simulating the contact conduction effect when the relay to be repaired is normally engaged.

[0030] The mounting structure is a cylindrical insert contact angle 3 adapted to the mounting base of the relay to be repaired. The outer diameter of the insert contact angle 3 is adapted to the inner diameter of the terminal socket of the mounting base, and the length of the insert contact angle 3 matches the depth of the socket of the mounting base, ensuring no looseness or gap after insertion. The insert contact angle 3 is circumferentially distributed, and the angle of the circumferential distribution is consistent with the angle of the terminal distribution on the mounting base, realizing a one-to-one correspondence between the insert contact angle 3 and the terminals of the mounting base, avoiding misconnection. The conductive post is connected to the insert contact angle 3, and one end of the conductive post is fixedly connected to the metal core inside the insert contact angle 3, ensuring that the current can be conducted to the conductive post through the insert contact angle 3. The insert contact angle 3 is mated with the relay mounting base, and the conductive post corresponds to the wiring terminals on the mounting base.

[0031] Eleven conductive posts are provided, numbered 1-11. Conductive post 1 and conductive post 11 are the docking posts for the power supply terminals of the relay coil to be repaired. They only serve as physical docking posts in the tooling and do not participate in the conduction path of the conductive components, thus avoiding the impact of abnormal coil power supply on the tooling function. Conductive post 2 and conductive post 6 are closed-loop connected and fixedly connected by conductive components to form a fixed conduction path, which is suitable for the basic conduction requirements of all models of relays to be repaired. Conductive post 3 and conductive post 5 are closed-loop connected and fixedly connected by conductive components. Together with the conduction path of conductive posts 2-6, they constitute the fixed conduction part of the tooling. Conductive post 9 and conductive post 8 are connected by a switch component, which is controlled by mode switching switch 2, and is an adjustable conduction path. Conductive post 10 and conductive post 7 are connected by a switch component, which, along with the switch component of conductive posts 9-8, is synchronously controlled by mode switching switch 2 to achieve coordinated adjustment of the conduction path.

[0032] The mode switching switch 2 has at least a first switching terminal and a second switching terminal. When the first switching terminal is pressed, the conducting component switches to the conducting state of the relay to be repaired that is adapted to the first type of contact combination. The first type of contact combination is a combination of the relay to be repaired that contains only normally open contacts and no normally closed contacts, such as the RB4P-G40DC and RB3P-G30DC model relays. When the second switching terminal is pressed, the conducting component switches to the conducting state of the relay to be repaired that is adapted to the second type of contact combination. The second type of contact combination is a combination of the relay to be repaired that contains both normally open and normally closed contacts, such as the RB3P-G21DC and RB4P-G22DC model relays.

[0033] Reference Figures 4-7 When the mode switching switch 2 is pressed at the first switching end, conductive post 9 and conductive post 8 are closed and connected. The mode switching switch 2 drives the corresponding switch to close, forming a conduction path from conductive post 9 to conductive post 8. Conductive post 10 and conductive post 7 are closed and connected, synchronously driving the corresponding switch to close, forming a conduction path from conductive post 10 to conductive post 7. Together with the fixed conduction path, they meet the conduction requirements of the first type of contact combination relay.

[0034] Reference Figures 4-7 When the mode switching switch 2 is pressed at the second switching end, conductive post 9 is disconnected from conductive post 8, and the mode switching switch 2 drives the corresponding switching element to separate, cutting off the conduction path of conductive posts 9-8. Conductive post 10 is disconnected from conductive post 7, and the corresponding switching element is driven to separate, cutting off the conduction path of conductive posts 10-7, leaving only the fixed conduction path, thus meeting the conduction requirements of the second type of contact combination relay.

[0035] Table 1: Conduction Modes of Four Types of Relays The bottom of the tooling housing 1 is marked with numbers "1" to "11" engraved on the bottom of the housing. Each number corresponds to a plug contact angle 3, and a positioning line is provided next to the number to facilitate the operator to quickly identify the corresponding number of the plug contact angle 3. The number is set to correspond to the plug contact angle 3. The bottom of the tooling housing 1 is provided with a guide post 4. The guide post 4 is a cylindrical structure. Its outer diameter is adapted to the center positioning hole of the mounting base of the relay to be repaired. The length of the guide post 4 is greater than the length of the plug contact angle 3. During assembly, the guide post 4 can be aligned with the positioning hole to achieve the pre-positioning of the tooling. The guide post 4 is placed at the center of the circle containing all the plug contact angles 3.

[0036] The mode switching switch 2 is connected to a status indicator light. The indicator light is installed on the top of the tooling housing 1 near the mode switching switch 2 and uses high-brightness LED beads, which facilitates quick observation in the complex environment of the EMU electrical cabinet. When the mode switching switch 2 is in the first switching terminal pressed state, the indicator light is lit. The indicator light is linked with the first switching terminal of the mode switching switch 2. After pressing the first switching terminal, the indicator light circuit is turned on and emits a light signal. When the second switching terminal is pressed, the indicator light circuit is turned off and the light is turned off, providing intuitive feedback on the current tooling mode.

[0037] Tooling workflow: The mode switching switch 2 changes the position of the internal metal contact piece by pressing different switching terminals according to the contact combination type of the relay to be repaired, thereby controlling the on / off state of the switching element in the conduction assembly. The conduction component forms a conduction path that matches the relay to be repaired according to the control signal of the mode switching switch 2. The fixed conduction path (conductive posts 2-6 and 3-5) is always conducting, while the adjustable conduction path (conductive posts 9-8 and 10-7) is selectively conducting according to the mode. The status indicator light works synchronously with the mode switch 2. The light's on / off state indicates whether the current conduction path matches the model of the relay to be repaired, ensuring that the tooling is in the correct working state. The mounting structure uses guide posts 4 for pre-positioning and circumferentially distributed insertion contact angles 3 to achieve precise and stable docking between the tooling and the mounting base, ensuring reliable contact between the conductive posts and the terminals of the mounting base and avoiding continuity interruption.

[0038] Tooling operation steps: Taking the RB4P-G40DC model (first type of contact combination) relay fault on the CRH380B platform EMU as an example, the specific operation steps are as follows: A critical loop fault was discovered through the onboard monitoring system of the EMU. On-site investigation confirmed that the faulty device was a Yaskawa relay of model RB4P-G40DC. The cause of the fault was either a fault in the relay body or an abnormal power supply to the coil, which prevented the normally open contacts from closing. Disconnect the power supply to the circuit containing the fault relay, grasp the two clips on both sides of the fault relay with both hands, and pull it upwards in a vertical direction to detach the fault relay from the mounting base. Take out the relay strong-actuation fixture of this embodiment, check that the fixture housing 1 is undamaged, the status indicator light is undamaged, the mode switching switch 2 can be pressed and reset normally, and confirm that the insulating sleeve on the outside of the conductive post has not fallen off. Observe the guide post 4 and the label on the bottom of the tooling housing 1, align the guide post 4 with the center positioning hole of the mounting base, and slowly insert it until the insertion contact angle 3 is fully inserted into the terminal socket of the mounting base, ensuring that the tooling housing 1 and the mounting base fit together without gaps. According to the model of the relay to be repaired (RB4P-G40DC, first type of contact combination), press the first switching terminal of the mode switching switch 2 on the top of the tooling, observe the status indicator light, and confirm that the conductive component has switched to the corresponding conductive state. The circuit power supply was reconnected, and the critical loop fault alarm was cleared through the on-board monitoring system. It was confirmed that the EMU was not subject to any chain reaction such as speed limit. The tooling was used to force the corresponding contacts of the relay to be repaired to be turned on, and the operation was completed.

[0039] If the relay to be repaired is model RB3P-G21DC (second type of contact combination), simply press the second switching terminal of mode switching switch 2 in step 5 and observe that the status indicator light goes out. The remaining operation steps remain the same.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A relay strong-actuation fixture, characterized in that, The device includes a tooling housing (1), on which a mode switching switch (2) is provided. The tooling housing (1) contains a conductive component for turning on the contacts of the relay to be repaired. The mode switching switch (2) is electrically connected to the conductive component to adjust the conduction state of the conductive component. The bottom of the tooling housing (1) is provided with an installation structure for fitting and connecting with the mounting base of the relay to be repaired. When the relay to be repaired cannot be properly engaged, causing its contacts to be unable to conduct, the tooling housing (1) is assembled onto the mounting base of the relay to be repaired through the installation structure, and the conductive component is adjusted to a conduction state matching the model of the relay to be repaired through the mode switching switch (2) to force the conduction of the corresponding contacts of the relay to be repaired.

2. The relay strong-actuation fixture according to claim 1, characterized in that, The mode switching switch (2) is located on the top of the tooling housing (1), and the mode switching switch (2) is a press-type switching component. By pressing different ends, the conducting component is driven to switch to different conducting states. The tooling housing (1) is provided with a status indicator to display the current conducting state of the mode switching switch (2).

3. The relay strong-actuation fixture according to claim 2, characterized in that, The conductive assembly includes conductive posts for connecting the terminals of the relay to be repaired, and conductive elements for connecting different conductive posts. The mode switching switch (2) adjusts the conductive path of the conductive assembly by changing the connection relationship between the conductive elements and the conductive posts. When the conductive assembly is in different connected states, the conductive elements make the connected conductive posts conductive, so as to simulate the contact conduction effect when the relay to be repaired is normally engaged.

4. The relay strong-actuation fixture according to claim 3, characterized in that, The mounting structure is a cylindrical plug contact angle (3) adapted to the mounting base of the relay to be repaired. The plug contact angle (3) is circumferentially distributed. The conductive post is connected to the plug contact angle (3). The plug contact angle (3) is mated with the relay mounting base. The conductive post corresponds to the wiring terminal on the mounting base.

5. The relay strong-actuation fixture according to claim 4, characterized in that, There are 11 conductive posts, numbered 1-11 respectively. Conductive post 2 is closed to conductive post 6, conductive post 3 is closed to conductive post 5, conductive post 9 is connected to conductive post 8 through a switch, and conductive post 10 is connected to conductive post 7 through a switch.

6. The relay strong-actuation fixture according to claim 5, characterized in that, The mode switching switch (2) has at least a first switching terminal and a second switching terminal. When the first switching terminal is pressed, the conducting component switches to the conducting state of the relay to be repaired that is adapted to the first type of contact combination. When the second switching terminal is pressed, the conducting component switches to the conducting state of the relay to be repaired that is adapted to the second type of contact combination.

7. The relay strong-actuation fixture according to claim 6, characterized in that, When the mode switching switch (2) is pressed at the first switching end, conductive post 9 is closed and connected to conductive post 8, and conductive post 10 is closed and connected to conductive post 7.

8. The relay strong-actuation fixture according to claim 7, characterized in that, When the mode switching switch (2) is pressed at the second switching end, the 9th conductive post is disconnected from the 8th conductive post, and the 10th conductive post is disconnected from the 7th conductive post.

9. The relay strong-actuation fixture according to claim 8, characterized in that, The tool housing (1) has a label at the bottom, which corresponds to the insertion contact angle (3). The tool housing (1) has a guide post (4) at the bottom, which is located at the center of the circle containing all the insertion contact angles (3).

10. The relay strong-actuation fixture according to claim 9, characterized in that, The mode switching switch (2) is connected to a status indicator light. When the mode switching switch (2) is in the state of pressing the first switching end, the indicator light is lit.

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