A device and operating method for detecting the tripping time of a safety switch

Abstract

This invention discloses a device for detecting the tripping time of a safety switch, comprising a base plate, a fixing seat on the base plate, a placement groove on the fixing seat for fixing the safety switch, a pre-start component on the side of the fixing seat for pre-starting the safety switch, and a starting component on the fixing plate for opening and closing the safety switch. The testing device provided by this invention simplifies and facilitates the detection of safety switches, eliminating errors caused by manual operation and recording, greatly improving detection efficiency and reliability.

Description

Technical Field

[0001] This invention relates to the field of switch timing test technology, and is particularly applicable to the testing and experimentation of safety switches on aircraft. Background Technology

[0002] Switches, as common electronic components, are widely used in electronic isolation devices across various industries. In certain situations, it's necessary to control the switch's response time within a specific range. A safety switch, for example, is an interlocking device used in aircraft; when the switching mechanism is triggered, the response time must be less than 10ms. Traditional testing methods involve manual operation, using a quick-plugging and unplugging mechanism to activate the switch. Due to the extremely short response time, the results of two or more tests on the same switch can be inconsistent. Summary of the Invention

[0003] To address the problems in the prior art, this invention provides a highly efficient and accurate safety switch testing device that replaces deviations caused by human operation, achieves intelligent detection of safety switches, and effectively ensures consistency during safety switch testing.

[0004] The technical solution of the present invention is as follows: a device for detecting the tripping time of a safety switch, comprising a base plate, a fixing seat provided on the base plate, the fixing seat having a placement groove for fixing the safety switch, a pre-start component provided on the side of the fixing seat for pre-starting the safety switch, and a starting component provided on the fixing plate for opening and closing the safety switch.

[0005] As a further improvement to the above technical solution:

[0006] Preferably, the base plate is fixed to the mounting base with a first screw, and the height of the base plate and the height of the starting assembly are adjusted by a second screw and a pad.

[0007] Preferably, the pre-starting component includes a second screw seat threaded to the end face of the fixed seat, a guide rod slidably disposed inside the second screw seat, the guide rod passing through the fixed seat, and a second compression spring sleeved on the guide rod, the second compression spring being located inside the second screw seat.

[0008] Preferably, one end of the guide rod is provided with an end cap.

[0009] Preferably, the starting assembly includes a first screw seat threaded to one side of the fixed base, a push rod slidably disposed in the first screw seat, a first compression spring sleeved on the push rod, the first compression spring being located in the first screw seat, a fixing hole being provided in front of the push rod, and an electromagnet being provided on the base plate, the spindle of the electromagnet being perpendicular to the push rod and matching the fixing hole, and being inserted and pulled out in the fixing hole.

[0010] Preferably, a positioning rod is provided on the base plate, a limit micro switch is rotatably mounted on the positioning rod, a timer is also provided inside the limit micro switch, a positioning pin is slidably mounted through and vertically on the limit micro switch, the positioning pin positions the limit micro switch by means of a hole provided on the base plate, and the end of the push rod contacts the limit micro switch through a spring.

[0011] Preferably, the upper end of the positioning rod is screwed with an anti-loosening nut, which is used to limit the upper end of the limit switch and prevent it from coming off.

[0012] To complement the detection device provided by this invention, this invention also provides an operating method for the device for detecting the tripping time of a safety switch, comprising the following steps:

[0013] Step 1: The tester places the safety switch in the slot on the mounting plate and makes minor adjustments to the height of the mounting plate to meet the test requirements.

[0014] Step 2: Press the end cap to push the guide rod to open the bottom spring, so that the safety switch is in the pre-trigger state;

[0015] Step 3: Rotate the positioning rod to limit the micro switch to open the position, press the push rod until the core of the electromagnet is inserted into the small hole at the front end of the push rod, fix the push rod, at this time the push rod is in contact with the electrical signal timing point of the safety switch, and the safety switch is in the triggered state;

[0016] Step 4: Activate the electromagnet electric switch. The electromagnet spindle is removed, the electrical signal is disconnected, and the safety switch automatically closes. At the same time, the push rod returns to its original position under the action of the first compression spring and is transmitted to the limit switch through the spring. The start time is transmitted to the computer through the timer inside the limit micro switch to complete the test and record the results.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The testing device provided by this invention makes the testing operation of safety switches simple and convenient, replacing the testing errors caused by manual operation and manual recording, greatly improving the testing efficiency and enhancing the reliability of the test.

[0019] 2. The detection device provided in this invention is intelligent and can perform simultaneous testing of a certain batch of safety switches as needed. When used with a constant temperature chamber, it can test the performance under different working conditions (temperatures). This design concept can be extrapolated to the testing of other switches with similar structures. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a partial cross-sectional view of the front view of the present invention;

[0023] Figure 3 This is a partial cross-sectional view of the structure of the present invention from top view;

[0024] Figure 4 for Figure 3 A partially enlarged structural diagram of the pre-start component;

[0025] Figure 5 for Figure 3 A partially enlarged schematic diagram of the startup component.

[0026] Reference numerals in the attached drawings: 1. First screw; 2. Second screw; 3. Washer plate; 4. Base plate; 5. Locating pin; 6. Locating rod; 7. Anti-loosening nut; 8. Mandrel; 9. Electromagnet; 10. Limit micro switch; 11. First screw seat; 12. Push rod; 13. First compression spring; 14. Fixing seat; 15. Second screw seat; 16. Guide rod; 17. End cap; 18. Second compression spring; 19. Spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "front," "rear," "left," "right," "up," and "down," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. The technical solutions of the various embodiments in this invention can be combined, and the technical features in the embodiments can also be combined to form new technical solutions.

[0029] This invention provides the following technical solution:

[0030] As attached Figure 1 To be continued Figure 5 As shown, the first screw 1 fixes the base plate 4 and the fixed seat 14. The fixed seat 14 is provided with a placement groove for placing the safety switch. The second screw 2 fixes the base plate 4 and the electromagnet 9 by adjusting the height through the pad 3. The guide rod 16 and the second compression spring 18 are threaded onto the side of the fixed seat 14 through the second screw seat 15. An end cap 17 is provided at the other end of the guide rod 16. The push rod 12 and the first compression spring 13 are installed on the adjacent side of the fixed seat 14 through the first screw seat 11. The push rod 12 has a small hole. The spindle 8 completes the two states of safety switch triggering and disconnection through the small hole of the push rod 12.

[0031] The limit micro switch 10 and the positioning rod 6 are installed and fixed on the base plate 4. The anti-loosening nut 7 locks the limit switch to prevent it from coming off. The positioning pin 5 is a movable part. When the safety switch is not triggered and the device is in the pre-start state, the positioning pin 5 is in the disengaged state. When the device is ready to work, the positioning pin 5 positions the limit switch through the corresponding hole in the base plate 4. The other end of the push rod 12 contacts the limit micro switch 10 through the spring piece 19. A timer is set inside the limit micro switch 10.

[0032] The working process of this invention:

[0033] 1. The tester places the safety switch in the slot on the mounting plate and makes minor adjustments to the height of the mounting plate to meet the test requirements;

[0034] 2. Press the end cap 17 to push the guide rod 16 to open the bottom spring, so that the safety switch is in the pre-trigger state;

[0035] 3. Rotate the positioning rod 6 to open the limit micro switch 10, press the push rod 12 until the spindle 8 of the electromagnet 9 is inserted into the small hole at the front end of the push rod 12, and fix the push rod 12. At this time, the push rod 12 is in contact with the electrical signal timing point of the safety switch, and the safety switch is in the triggered state.

[0036] 4. When the electric switch of electromagnet 9 is activated, the spindle 8 of electromagnet 9 is removed, the electrical signal is disconnected, the safety switch is self-closing, and the push rod 12 returns to its original position under the action of the first compression spring 13. The signal is transmitted to the limit switch through the spring 19. The start time is transmitted to the computer through the timer inside the limit micro switch 10 to complete the test and record the results.

[0037] Using an electromagnet 9 as the control switch for opening operation, a limit switch is used to transmit electrical signals, and the test values ​​are displayed by a TJS-4 four-channel universal electronic timer. Batch testing can be configured with a computer to uniformly input and output data. It is an intelligent, efficient, accurate and intuitive safety switch testing device.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the take-off time of a safety switch, comprising a base plate (4), characterized in that, The bottom plate (4) is provided with a fixing seat (14) for placing a slot for fixing a safety switch, a pre-starting assembly is arranged on the side of the fixing seat (14) for pre-starting the safety switch, and a starting assembly is further arranged on the fixing seat (14) for opening and closing the safety switch. The pre-starting assembly comprises a second screw seat (15) which is screwed on the end face of the fixing seat (14), a guide rod (16) which is slidably arranged in the second screw seat (15), the guide rod (16) penetrates the fixing seat (14), a second compression spring (18) which is sleeved on the guide rod (16), and the second compression spring (18) is located in the second screw seat (15). The starting assembly comprises a first screw seat (11) which is screwed on one side of the fixing seat (14), a push rod (12) which is slidably arranged in the first screw seat (11), a first compression spring (13) which is sleeved on the push rod (12), and the first compression spring (13) is located in the first screw seat (11), a fixing hole is arranged on the front face of the push rod (12), an electromagnet (9) is further arranged on the bottom plate (4), the core shaft (8) of the electromagnet (9) is perpendicular to the push rod (12) and matches the fixing hole, and the core shaft (8) is inserted into and pulled out of the fixing hole to complete the triggering and disconnection of the safety switch. A positioning rod (6) is arranged on the bottom plate (4), a limit micro switch (10) is rotatably arranged on the positioning rod (6), a timer is further arranged in the limit micro switch (10), a positioning pin shaft (5) is vertically and slidably arranged on the limit micro switch (10), the positioning pin shaft (5) positions the limit micro switch (10) through the hole arranged on the bottom plate (4), and the end of the push rod (12) is in contact with the limit micro switch (10) through a spring piece (19).

2. The apparatus for detecting the take-off time of a safety switch according to claim 1, characterized in that, The bottom plate (4) is fixed with the fixing seat (14) by a first screw (1), and the height of the bottom plate (4) and the height of the starting assembly are adjusted by a second screw (2) and a backing plate (3).

3. The apparatus for detecting the take-off time of a safety switch according to claim 1, characterized in that, An end cover (17) is arranged at one end of the guide rod (16).

4. The apparatus for detecting a take-off time of a safety switch according to claim 1, wherein A anti-loosing nut (7) is screwed on the upper end of the positioning rod (6) for limiting the upper end of the limit switch and preventing it from being pulled out.

5. A method of operating a device for detecting the take-off time of a safety switch according to any one of claims 1 to 4, characterized in that The method comprises the following steps: Step 1: The tester places the safety switch in the placing slot on the fixing plate, and adjusts the height of the fixing plate to meet the test requirements; Step 2: The end cover (17) is pressed to push the guide rod (16) to open the bottom spring, so that the safety switch is in a pre-triggering state; Step 3: The limit micro switch (10) is rotated to open the position by the positioning rod (6), the push rod (12) is pressed, the core shaft (8) of the electromagnet (9) is inserted into the small hole at the front end of the push rod (12), the push rod (12) is fixed, the push rod (12) is in contact with the safety switch at the timing point, and the safety switch is in a triggering state; Step 4: The limit micro switch (10) is rotated to close the position by the positioning rod (6), the push rod (12) is pressed, the core shaft (8) of the electromagnet (9) is pulled out of the small hole at the front end of the push rod (12), the push rod (12) is fixed, the push rod (12) is in contact with the safety switch at the timing point, and the safety switch is in a disconnection state. Step4, start the electromagnetic iron (9) electric switch, the core shaft (8) of electromagnetic iron (9) is removed, the electric signal is disconnected, the safety switch realizes self-closing, at the same time, the push rod (12) is reset under the action of the first compression spring (13), is transmitted to the limit switch through the elastic sheet (19), and the starting time is transmitted into the computer to complete the test and record the result through the timer inside the limit micro switch (10).

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