A high-voltage-resistant click-type three-way on-off electromagnetic relay detection device

Abstract

The utility model relates to a kind of high-pressure-resistant patting type three-way on-off electromagnetic relay detection device, including, workbench;Moving track, the moving track is located on workbench, positioning station, detection station and push-out station are sequentially equipped on the moving track, the positioning station of the moving track is equipped with the conveyor belt for relay conveying;Horizontal moving mechanism, the horizontal moving mechanism is used to drive relay to move on moving track;Positioning device, the positioning device is positioned at positioning station, for the relay of conveying to carry out equidistance arrangement one by one;Detection device, the detection device is positioned at detection station, for detecting the relay on detection station;Push-out device, the push-out device is positioned at push-out station, for the relay of detection unqualified to push out moving track.The utility model has the beneficial effects that: without manual operation, effectively improve the efficiency of detection and reduce workload.

Description

Technical Field

[0001] This utility model relates to the field of relay testing technology, and in particular to a high-voltage withstand-type three-way on / off electromagnetic relay testing device. Background Technology

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the change in the input quantity (excitation quantity) reaches a specified requirement. It has an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). It is commonly used in automated control circuits, and is essentially an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] Existing 100A high-current, high-load DC relays must be tested and inspected before leaving the factory. Only those that pass the test can be shipped out, while those that fail need to be rejected. However, the current testing of relays requires manual placement of each relay on a testing table for testing. After the test is completed, the relays are taken out and the qualified and unqualified relays are separated. This method is inefficient and labor-intensive, and is not suitable for batch testing in factories. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-voltage-resistant three-way on / off electromagnetic relay detection device to solve the above problems.

[0005] The technical solution of this utility model is achieved as follows: a high-voltage withstand-type three-way on / off electromagnetic relay detection device, comprising,

[0006] Workbench;

[0007] A moving track is provided on a workbench. The moving track is provided with a positioning station, a detection station and an ejection station in sequence. The positioning station of the moving track is provided with a conveyor belt for relay transportation.

[0008] A traverse mechanism, which is used to drive the relay to move on the moving track;

[0009] A positioning device, located at a positioning station, is used to arrange the delivered relays at equal intervals one by one.

[0010] A testing device, located at a testing station, is used to test the relays at the testing station;

[0011] An ejection device, located at the ejection station, is used to eject relays that fail the inspection from the moving track.

[0012] By adopting the above technical solution, the relays enter from the entrance end of the moving track and pass through the positioning station, the detection station, and the ejection station in sequence. At the positioning station, the positioning device arranges the incoming relays at equal intervals to cooperate with the transverse mechanism. After the arrangement is completed, the transverse mechanism moves the relays to the detection station, where the detection device detects the relays. After the detection is completed, the transverse mechanism continues to move the relays to the ejection station. If a relay fails the test, the ejection device will eject the failed relay from the moving track, while the remaining qualified relays continue to move backward on the moving track. The entire process is automated, requiring no manual operation, effectively improving detection efficiency and reducing workload.

[0013] The present invention is further configured such that the transverse movement mechanism includes:

[0014] A transverse sliding plate, wherein the transverse sliding plate is provided with a plurality of notches adapted to the relay;

[0015] The first cylinder is fixed on the worktable and its output shaft is oriented toward the moving track. The output shaft of the first cylinder is connected to front and rear sliding plates, which are slidably connected to the worktable via the first guide rail.

[0016] The second cylinder is fixed on the front and rear slide plates and its output shaft is set parallel to the moving track. The output shaft of the second cylinder is connected to the transverse plate, and the transverse plate is slidably connected to the front and rear slide plates through the second guide rail.

[0017] The transverse plate extends from the positioning station to the ejection station.

[0018] By adopting the above technical solution, the positioning device arranges multiple relays at equal intervals, with the spacing matching a portion of the notches on the transverse plate. The first cylinder actuates, driving the front and rear slides, the second cylinder, and the transverse plate to move towards the moving track, allowing the relays to be inserted into the notches. Then, the second cylinder actuates, causing the transverse plate to move the relays backward to the detection station. Several notches on the transverse plate can simultaneously move multiple relays together, improving work efficiency. Then, the first cylinder resets, separating the transverse plate from the relays, and the second cylinder resets again, returning to the front of the moving track. Afterward, the first and second cylinders operate according to the above process again, moving the relays at the detection station backward to the push-out station, and simultaneously moving the relays at the positioning station backward to the detection station, allowing the relays to move gradually backward along the moving track, thus enabling the relays to sequentially pass through the positioning station, detection station, and push-out station.

[0019] The present invention is further configured such that the positioning device includes:

[0020] A number of separating cylinders are arranged in parallel at equal intervals along the conveying direction of the moving track. The telescopic shaft of the separating cylinder extends into the moving track and is located above the conveyor belt. The spacing between adjacent separating cylinders corresponds to the notch on the transverse plate.

[0021] A blocking cylinder is located in front of the separating cylinder, and its telescopic shaft extends into the moving track and is located above the conveyor belt.

[0022] A photoelectric sensor, wherein each photoelectric sensor corresponds to a separating cylinder and is located in front of the separating cylinder;

[0023] The distance between the blocking cylinder and the nearest separating cylinder is greater than the width of a single relay.

[0024] By adopting the above technical solution, the relays are spaced differently when they enter the entrance of the moving track. At this time, the separating cylinders are all extended to block the relays. When the first relay reaches the first separating cylinder, the photoelectric sensor in front of the first separating cylinder is triggered, and then the blocking cylinder extends to block the relays being transported behind. Then the first separating cylinder retracts, and the first relay moves backward and is blocked by the second separating cylinder. When the photoelectric sensor in front of the second separating cylinder is triggered, the second separating cylinder retracts, and the first relay moves backward and is blocked by the subsequent separating cylinders, and so on, until the relay reaches the last separating cylinder. At the same time, the subsequent relays are also blocked and released one by one until there is a relay in front of each separating cylinder. Then the transverse mechanism is activated, and the notch on the transverse plate is inserted into the corresponding relay. Then the separating cylinder retracts, and the transverse plate can simultaneously move multiple relays of this batch to the next station, realizing the movement and detection of multiple relays at one time, effectively improving the detection efficiency.

[0025] The present invention is further configured such that the detection device includes:

[0026] A fixed frame is mounted on a workbench, and a third cylinder is vertically mounted on the fixed frame;

[0027] The upper and lower slide plates are equipped with several detection devices that cooperate with the relays on the detection station. The upper and lower slide plates are connected to the telescopic shaft of the third cylinder.

[0028] The upper and lower slide plates are vertically slidably connected to the fixed frame via a third guide rail. After the upper and lower slide plates move down, the detection device connects to the relay for detection.

[0029] By adopting the above technical solution, when the relay moves to the testing station, the third cylinder moves the upper and lower slide plates downward, so that the testing equipment is connected to the relay for testing. After the test is completed, the third cylinder moves the upper and lower slide plates upward, and the system records the unqualified relays. When it moves to the ejection station, the corresponding unqualified relays are ejected by the ejection device.

[0030] The present invention is further configured such that: the moving track includes a bottom for the relay to slide and baffles provided on both sides of the bottom, the baffles being used to limit the sliding of the relay, and the baffles having an opening on one side of the ejection station for the relay to be ejected.

[0031] By adopting the above technical solution, the relay slides on the bottom, and the baffles on both sides can ensure that the movement of the relay is more stable and will not deviate, making the cooperation between the relay and other devices more stable.

[0032] The present invention is further configured such that the ejection device includes:

[0033] A sliding frame, located on one side of the opening in the moving track, is used to receive the pushed-out relay;

[0034] A lifting plate is located between the opening of the moving track and the sliding frame;

[0035] The fourth cylinder is fixed on the worktable and its output shaft is connected to the lifting plate, which is used to drive the lifting plate to move vertically.

[0036] The fifth cylinder is located on the side of the moving track away from the opening. After the fifth cylinder is activated, its telescopic shaft pushes the relay on the moving track through the opening to the slide frame.

[0037] By adopting the above technical solution, when a defective relay moves to the ejection station, the fourth cylinder drives the lifting plate to descend, and then the fifth cylinder corresponding to the defective relay moves to push the defective relay out of the moving track and into the slide frame, while other qualified relays continue to be transported to the rear.

[0038] The present invention is further configured such that: the slide-out frame is provided with a plurality of slide-out channels, the movement direction of the telescopic shaft of the fifth cylinder is parallel to the length direction of the slide-out channel, and the number of the fifth cylinder corresponds to the number of slide-out channels.

[0039] By adopting the above technical solution, different slide channels can be pushed into the unqualified relays according to their different problems, which facilitates the subsequent maintenance and testing of the relays.

[0040] The present invention is further configured such that: a roller protrudes from the inner side of the baffle at the detection station, which contacts and presses against the outer wall of the relay, and a rotating rod is rotatably connected to the roller. The rotating rod is vertically arranged. When the relay moves within the detection station, it drives the roller to rotate. Multiple rotating rods are equidistantly arranged along the length of the detection station. The roller is made of elastic rubber.

[0041] By adopting the above technical solution, when the relay moves within the testing station, there is rolling friction between it and the roller. Since some testing devices are electrically connected to the relay through plugging and unplugging, the relay may be easily moved upward when the testing device is unplugged. However, since the roller rotates horizontally and does not move vertically, the friction between the roller and the outer wall of the relay can effectively prevent the relay from moving vertically, keeping the relay always within the moving track.

[0042] The present invention is further configured such that multiple rollers are equidistantly arranged along the length direction of the rotating rod.

[0043] By adopting the above technical solution, the multiple rollers can effectively increase the friction on the relay, and the detection device remains within the moving track even when performing detection, making it more stable. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a top view of the structure of this utility model;

[0046] Figure 2 This is a front view of the structure of this utility model;

[0047] Figure 3 This is a schematic diagram of the moving track and the transverse plate in this utility model;

[0048] Figure 4 This is a cross-sectional view of the moving track structure at the testing station in this utility model. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] like Figures 1-4 As shown, this utility model discloses a high-voltage withstand-type three-way on / off electromagnetic relay detection device, comprising,

[0051] Workbench 1;

[0052] The moving track 2 is set on the workbench 1. The moving track 2 is provided with a positioning station 20, a detection station 21 and an ejection station 22 in sequence. The positioning station 20 of the moving track 2 is provided with a conveyor belt for relay transportation.

[0053] Horizontal movement mechanism 3, which is used to drive the relay to move on the moving track 2;

[0054] Positioning device 4, which is located at positioning station 20, is used to arrange the delivered relays at equal intervals one by one.

[0055] The detection device 5 is located at the detection station 21 and is used to detect the relays on the detection station 21.

[0056] The ejection device 6 is located at the ejection station 22 and is used to eject the relays that fail the test from the moving track 2.

[0057] By adopting the above technical solution, the relays enter from the entrance end of the moving track 2 and pass through the positioning station 20, the detection station 21, and the ejection station 22 in sequence. At the positioning station 20, the positioning device 4 arranges the incoming relays at equal intervals so that they cooperate with the transverse mechanism 3. After the arrangement is completed, the transverse mechanism 3 moves the relays to the detection station 21. Then, the detection device 5 detects the relays. After the detection is completed, the transverse mechanism 3 continues to move the relays to the ejection station 22. If the detected relays are unqualified, the ejection device 6 will push the unqualified relays out of the moving track 2. The remaining qualified relays continue to move backward on the moving track 2. The whole process is automated and requires no manual operation, which effectively improves the detection efficiency and reduces the workload.

[0058] In this embodiment of the utility model, the transverse movement mechanism 3 includes:

[0059] A transverse sliding plate 30, wherein the transverse sliding plate 30 is provided with a plurality of notches adapted to the relay;

[0060] The first cylinder 31 is fixed on the workbench 1 and its output shaft is set towards the moving track 2. The output shaft of the first cylinder 31 is connected to the front and rear slide plates 32, which are slidably connected to the workbench 1 through the first guide rail.

[0061] The second cylinder 33 is fixed on the front and rear slide plates 32 and its output shaft is set parallel to the moving track 2. The output shaft of the second cylinder 33 is connected to the transverse plate 30. The transverse plate 30 is slidably connected to the front and rear slide plates 32 through the second guide rail.

[0062] The transverse plate 30 extends from the positioning station 20 to the ejection station 22.

[0063] By adopting the above technical solution, the positioning device 4 arranges multiple relays at equal intervals, and the spacing of their arrangement matches a portion of the notches on the transverse plate 30. The first cylinder 31 moves the front and rear slide plates 32, the second cylinder 33, and the transverse plate 30 towards the moving track 2, so that the relays are inserted into the notches. Then the second cylinder 33 moves, causing the transverse plate 30 to move the relays backward to the detection station 21. Several notches on the transverse plate 30 can move multiple relays together at the same time, improving work efficiency. Then the first cylinder 31 resets, separating the transverse plate 30 from the relays. The second cylinder 33 resets again, returning to the front of the moving track 2. Afterward, the first cylinder 31 and the second cylinder 33 operate according to the above process again, which can move the relays at the detection station 21 backward to the ejection station 22, and at the same time move the relays at the positioning station 20 backward to the detection station 21, so that the relays move backward along the moving track 2, thereby allowing the relays to pass through the positioning station 20, the detection station 21, and the ejection station 22 in sequence.

[0064] In this embodiment of the utility model, the positioning device 4 includes:

[0065] Separating cylinders 40 are arranged in parallel at equal intervals along the conveying direction of the moving track 2. The telescopic shaft of the separating cylinders 40 extends into the moving track 2 and is located above the conveyor belt. The spacing between adjacent separating cylinders 40 corresponds to the notch on the transverse plate 30.

[0066] The blocking cylinder 41 is located in front of the separating cylinder 40, and its telescopic shaft extends into the moving track 2 and is located above the conveyor belt.

[0067] Photoelectric sensor 42, which corresponds one-to-one with the separating cylinder 40 and is located in front of the separating cylinder 40;

[0068] The distance between the blocking cylinder 41 and the nearest separating cylinder 40 is greater than the width of a single relay.

[0069] By adopting the above technical solution, when the relays enter the entrance end of the moving track 2, the distance between them is different. At this time, the separating cylinders 40 are all extended to block the relays. When the first relay reaches the first separating cylinder 40, the photoelectric sensor 42 in front of the first separating cylinder 40 is triggered, and then the blocking cylinder 41 extends to block the relay being transported from behind. Then the first separating cylinder 40 retracts, and the first relay moves backward and is blocked by the second separating cylinder 40. When the photoelectric sensor 42 in front of the second separating cylinder 40 is triggered, the second... As the first separator cylinder 40 retracts, the first relay moves backward and is blocked by the next separator cylinder 40, and so on, until the relay reaches the last separator cylinder 40. At the same time, subsequent relays are blocked and released one by one until there is a relay in front of each separator cylinder 40. Then the transverse mechanism 3 is activated, and the notch on the transverse plate 30 is inserted into the corresponding relay. Then the separator cylinder 40 retracts, and the transverse plate 30 can simultaneously move multiple relays of this batch to the next station, realizing the movement and detection of multiple relays at one time, effectively improving the detection efficiency.

[0070] In this embodiment of the invention, the detection device 5 includes:

[0071] A fixing frame 50 is mounted on a workbench 1, and a third cylinder 51 is vertically mounted on the fixing frame 50.

[0072] The upper and lower slide plates 52 are equipped with a number of detection devices 53 that cooperate with the relays on the detection station 21. The upper and lower slide plates 52 are connected to the telescopic shaft of the third cylinder 51.

[0073] The upper and lower slide plates 52 are vertically slidably connected to the fixed frame 50 via the third guide rail. After the upper and lower slide plates 52 move down, the detection device 53 is connected to the relay for detection.

[0074] By adopting the above technical solution, when the relay moves to the detection station 21, the third cylinder 51 moves to drive the upper and lower slide plates 52 to move down, so that the detection equipment 53 is connected to the relay for detection. When the detection is completed, the third cylinder 51 moves to drive the upper and lower slide plates 52 to move up. At the same time, the system records the unqualified relay. When it moves to the ejection station 22, the corresponding unqualified relay is ejected by the ejection device 6.

[0075] In this embodiment of the utility model, the moving track 2 includes a bottom 23 for the relay to slide and baffles 24 provided on both sides of the bottom. The baffles 24 are used to limit the sliding of the relay. The baffles have an opening on one side at the ejection station 22 for the relay to be ejected.

[0076] By adopting the above technical solution, the relay slides on the bottom 23, while the baffles 24 on both sides ensure that the movement of the relay is more stable and will not deviate, making the cooperation between the relay and other devices more stable.

[0077] In this embodiment of the invention, the ejection device 6 includes:

[0078] A slide-out frame 60 is provided on one side of the opening of the moving track 2 and is used to receive the pushed-out relay;

[0079] A lifting plate 61 is provided between the opening of the moving track 2 and the sliding frame 60.

[0080] The fourth cylinder is fixed on the worktable 1 and its output shaft is connected to the lifting plate 61, which is used to drive the lifting plate 61 to move vertically.

[0081] The fifth cylinder 62 is located on the side of the moving track 2 away from the opening. After the fifth cylinder 62 is activated, its telescopic shaft pushes the relay on the moving track 2 through the opening onto the slide frame 60.

[0082] By adopting the above technical solution, when the unqualified relay moves to the ejection station 22, the fourth cylinder drives the lifting plate 61 to descend, and then the fifth cylinder 62 corresponding to the unqualified relay is activated to push the unqualified relay out of the moving track 2 and into the slide frame 60, while other qualified relays continue to be transported to the rear.

[0083] In this embodiment of the utility model, the slide-out frame 60 is provided with a plurality of slide-out channels, the movement direction of the telescopic shaft of the fifth cylinder 62 is parallel to the length direction of the slide-out channel, and the number of the fifth cylinder 62 corresponds to the number of slide-out channels.

[0084] By adopting the above technical solution, different slide channels can be pushed into the unqualified relays according to their different problems, which facilitates the subsequent maintenance and testing of the relays.

[0085] In this embodiment of the present invention, the inner side of the baffle 24 at the detection station 21 is provided with a roller 70 that contacts and presses against the outer wall of the relay and a rotating rod 71 that is rotatably connected to the roller 70. The rotating rod 71 is vertically arranged. When the relay moves within the detection station 21, it drives the roller 70 to rotate. Multiple rotating rods 71 ​​are equidistantly arranged along the length of the detection station 21. The roller 70 is made of elastic rubber.

[0086] By adopting the above technical solution, when the relay moves within the detection station 21, there is rolling friction between it and the roller 70. Since some detection devices 5 are electrically connected to the relay through plugging and unplugging, the relay is easily moved upward when the detection device 5 is pulled out. However, since the roller 70 rotates horizontally and does not move vertically, the friction between the roller 70 and the outer wall of the relay can effectively prevent the relay from moving vertically, keeping the relay always within the moving track 2.

[0087] In this embodiment of the invention, multiple rollers 70 are equidistantly arranged along the length of the rotating rod 71.

[0088] By adopting the above technical solution, the multiple rollers 70 can effectively increase the friction on the relay, and even when the detection device 5 is performing detection, it remains within the moving track 2, making it more stable.

[0089] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device, characterized in that, include, Workbench (1); The moving track (2) is located on the workbench (1). The moving track (2) is provided with a positioning station (20), a detection station (21) and an ejection station (22) in sequence. The positioning station (20) of the moving track (2) is provided with a conveyor belt for relay transportation. A transverse mechanism (3) is used to drive the relay to move on the moving track (2); Positioning device (4), which is located at the positioning station (20), is used to arrange the relays that are delivered one by one at equal intervals; The detection device (5) is located at the detection station (21) and is used to detect the relays on the detection station (21); The ejection device (6) is located at the ejection station (22) and is used to eject the unqualified relays from the moving track (2).

2. The high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 1, characterized in that, The lateral movement mechanism (3) includes: A transverse plate (30) is provided with a plurality of notches adapted to the relay; The first cylinder (31) is fixed on the workbench (1) and its output shaft is set towards the moving track (2). The output shaft of the first cylinder (31) is connected to the front and rear slide plates (32). The front and rear slide plates (32) are slidably connected to the workbench (1) through the first guide rail. The second cylinder (33) is fixed on the front and rear slide plates (32) and its output shaft is set parallel to the moving track (2). The output shaft of the second cylinder (33) is connected to the transverse plate (30), and the transverse plate (30) is slidably connected to the front and rear slide plates (32) through the second guide rail.

3. The high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 2, characterized in that, The positioning device (4) includes: Separating cylinders (40) are arranged in a plurality of parallel positions at equal intervals along the conveying direction of the moving track (2). The telescopic shaft of the separating cylinders (40) extends into the moving track (2) and is located above the conveyor belt. The spacing between adjacent separating cylinders (40) corresponds to the notch on the transverse plate (30). A blocking cylinder (41) is located in front of the separating cylinder (40), and its telescopic shaft extends into the moving track (2) and is located above the conveyor belt. Photoelectric sensor (42), the photoelectric sensor (42) corresponds one-to-one with the separating cylinder (40) and is located in front of the separating cylinder (40); The distance between the blocking cylinder (41) and the nearest separating cylinder (40) is greater than the width of a single relay.

4. The high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 1, characterized in that, The detection device (5) includes: A fixed frame (50) is provided on a workbench (1), and a third cylinder (51) is vertically provided on the fixed frame (50). The upper and lower slide plates (52) are equipped with several detection devices (53) that cooperate with the relays on the detection station (21). The upper and lower slide plates (52) are connected to the telescopic shaft of the third cylinder (51). The upper and lower slide plates (52) are vertically slidably connected to the fixed frame (50) via the third guide rail. After the upper and lower slide plates (52) move down, the detection device (53) is connected to the relay for detection.

5. The high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 1, characterized in that, The moving track (2) includes a bottom (23) for the relay to slide and baffles (24) on both sides of the bottom. The baffles (24) are used to limit the sliding of the relay. The baffles have an opening on one side at the ejection station (22) for the relay to be ejected.

6. The high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 5, characterized in that, The ejection device (6) includes: A slide-out frame (60) is provided on one side of the opening of the moving track (2) for receiving the pushed-out relay; A lifting plate (61) is provided between the opening of the moving track (2) and the sliding frame (60); The fourth cylinder is fixed on the worktable (1) and its output shaft is connected to the lifting plate (61) to drive the lifting plate (61) to move vertically. The fifth cylinder (62) is located on the side of the moving track (2) away from the opening. After the fifth cylinder (62) is activated, the telescopic shaft pushes the relay on the moving track (2) through the opening to the slide frame (60).

7. A high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 6, characterized in that, The slide frame (60) is provided with several slide channels. The direction of motion of the telescopic shaft of the fifth cylinder (62) is parallel to the length direction of the slide channel. The number of the fifth cylinders (62) corresponds to the number of slide channels.

8. A high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 5, characterized in that, The inner side of the baffle (24) at the detection station (21) is provided with a roller (70) that contacts and presses against the outer wall of the relay and a rotating rod (71) that is rotatably connected to the roller (70). The rotating rod (71) is set vertically. When the relay moves in the detection station (21), it drives the roller (70) to rotate. Multiple rotating rods (71) are set at equal intervals along the length of the detection station (21). The roller (70) is made of elastic rubber.

9. A high-voltage withstand-voltage snap-action type three-way on / off electromagnetic relay detection device according to claim 8, characterized in that, The rollers (70) are arranged at equal intervals along the length of the rotating rod (71).

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