Safety switch aging test machine

Abstract

The utility model discloses an aging test machine for a safety switch, which is characterized in that a tray is positioned and placed on a supporting plate, and a row of positioning grooves are formed in the tray; the longitudinal driving unit is in driving connection with the supporting plate; the first lifting driving unit is in driving connection with the mounting frame, power connection probes are transversely arranged at the rear end of the mounting frame, and the multiple sets of power connection probes correspond to power connection contacts on the safety switches placed in the row of positioning grooves one by one up and down; the second lifting driving unit is fixedly connected to the mounting frame and connected with key inserting pieces, and the row of key inserting pieces correspond to the inserting holes in the safety switches placed in the row of positioning grooves in a one-to-one mode up and down; and the control device is electrically connected with the longitudinal driving unit, the first lifting driving unit, the second lifting driving unit and the power connection probe. By adopting the technical scheme, a plurality of safety switches can be tested at one time, the test efficiency of the safety switches is greatly improved, and compared with manual evaluation, the test accuracy is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of safety switch testing, and particularly relates to a safety switch aging testing machine. Background Art

[0002] At present, safety switches are tested using a multimeter and a switching power supply, which is a pure manual test, and only one safety switch is tested at a time. Such a test method is inefficient, has a high labor cost, and the detection relies on manual evaluation, resulting in certain deviations. Content of the Utility Model

[0003] In order to overcome the existing technical defects, the purpose of the utility model is to provide a safety switch aging testing machine to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problems is as follows:

[0005] According to one aspect of the utility model, a safety switch aging testing machine is designed, including:

[0006] A pallet on which a tray is positioned and placed. A row of positioning grooves for positioning and placing safety switches are horizontally and spacedly arranged on the tray;

[0007] A longitudinal driving unit, which is drivingly connected to the pallet and is used to drive the pallet to move longitudinally;

[0008] A first lifting driving unit, which is drivingly connected to a mounting frame arranged above the tray and is used to drive the mounting frame to lift and lower. A plurality of groups of power connection probes are horizontally arranged at the rear end of the mounting frame, and the plurality of groups of power connection probes respectively correspond to and are vertically aligned with the power connection contacts on the safety switches placed in a row of positioning grooves one by one;

[0009] A second lifting driving unit, which is arranged in a row and fixedly connected to the mounting frame. The driving end of each second lifting driving unit is connected with a key insert piece and is used to drive the key insert piece to lift and lower. A row of key insert pieces respectively correspond to and are vertically aligned with the jacks on the safety switches placed in a row of positioning grooves one by one;

[0010] A control device, which is electrically connected to the longitudinal driving unit, the first lifting driving unit, the second lifting driving unit, and the power connection probes.

[0011] With the above technical solution, when aging tests are required for safety switches, multiple safety switches are placed in the positioning grooves on the tray. Then, the tray is positioned on the pallet. After that, the longitudinal drive unit drives the pallet to drive the tray to move below the mounting frame. At this time, several groups of power connection probes on the mounting frame correspond to the power connection contacts on a row of safety switches one by one vertically, and the key insert corresponds to the jack on the safety switch vertically. Then, the first lifting drive unit drives the mounting frame to move downwards, so that the power connection probes contact the power connection contacts on the safety switches, making the coils in the safety switches energized. Then, the second lifting drive unit drives the key insert to move downwards so that the lower end of the key insert is inserted into the jack on the safety switch to conduct aging tests on the safety switches. After reaching the test time, the second lifting drive unit drives the key insert to move up and down several times to determine whether the coil locking function in the safety switch is normal, thereby realizing the testing of the safety switches. Multiple safety switches can be tested at one time, greatly improving the testing efficiency of the safety switches. Compared with manual evaluation, the testing accuracy is also relatively high.

[0012] In order to better solve the above technical defects, the present utility model also has a better technical solution:

[0013] In some embodiments, the longitudinal drive unit is fixedly connected to the bottom plate, and the pallet is longitudinally slidably matched with the bottom plate through a guide rail and a slider. When the first lifting drive unit drives the power connection probes to contact the power connection contacts on the safety switches, the mounting frame contacts the top surface of the safety switches.

[0014] In some embodiments, the first lifting drive unit is fixedly connected to the top plate. The left and right ends of the top plate are respectively fixedly connected with sliding rods. The lower ends of the sliding rods are fixedly connected to the bottom plate. Guide sleeves are slidably matched on the sliding rods, and the mounting frame is fixedly connected to the guide sleeves.

[0015] In some embodiments, first buffers are vertically fixedly connected to both ends of the mounting frame, and the buffer ends of the first buffers are arranged downward. This can play a buffering role to prevent violent collisions between the power connection probes and the power connection contacts on the safety switches.

[0016] In some embodiments, a second buffer is vertically fixedly connected to the top plate, and the buffer end of the second buffer faces the mounting frame.

[0017] In some embodiments, a third buffer and a fourth buffer are longitudinally fixedly connected to the bottom plate. The buffer end of the third buffer faces the front side, and a first stop block that corresponds to the front and back and is fixedly connected to the pallet is arranged on the front side of the buffer end. The buffer end of the fourth buffer faces the back side, and a second stop block that corresponds to the front and back and is fixedly connected to the pallet is arranged on the back side of the buffer end.

[0018] In some embodiments, the longitudinal driving unit, the first lifting driving unit, and the second lifting driving unit are air cylinders, hydraulic cylinders, or electric cylinders.

[0019] In some embodiments, L-shaped angle plates are fixedly connected to both sides of the front end of the pallet, and a positioning block is fixedly connected to the top of the rear end. The upper ends of the angle plates extend above the top surface of the pallet and form a positioning structure for positioning the tray together with the positioning block.

[0020] In some embodiments, handles are respectively connected to the left and right ends of the tray, and warning lights connected to the mounting frame and electrically connected to the control device are respectively arranged at the rear sides of each key insert.

[0021] In some embodiments, it includes a machine shell. The pallet, the longitudinal driving unit, the first lifting driving unit, the second lifting driving unit, and the control device are arranged inside the machine shell. A function switch and a timer electrically connected to the control device are connected to the machine shell, and the control device is a PLC controller. Description of the Drawings

[0022] Figure 1 Schematic structural diagram of a safety switch aging tester according to an embodiment provided by the present utility model;

[0023] Figure 2 Schematic structural diagram of the state of the safety switch aging tester after hiding the machine shell;

[0024] Figure 3 For Figure 2 front view state schematic diagram;

[0025] Figure 4 For Figure 3 state schematic diagram from another perspective;

[0026] Figure 5 Schematic structural diagram of the tray;

[0027] Figure 6 Schematic structural diagram of the longitudinal driving unit and the bottom plate;

[0028] Reference Signs:

[0029] 1. Pallet; 11. Angle Plate; 12. Positioning Block; 13. First Stop Block; 14. Second Stop Block; 2. Longitudinal Driving Unit; 21. Bottom Plate; 3. First Lifting Driving Unit; 30. Top Plate; 31. Slide Rod; 32. Guide Sleeve; 4. Second Lifting Driving Unit; 41. Key Insert; 5. Machine Shell; 51. Function Switch; 52. Timer; 6. Tray; 61. Positioning Groove; 62. Handle; 7. Mounting Frame; 71. Power Connection Probe; 72. Warning Light; 81. First Buffer; 82. Second Buffer; 83. Third Buffer; 84. Fourth Buffer; 9. Safety Switch. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0031] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0032] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, fixed connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0033] Referring to Figures 1 to 6 As shown, a safety switch aging tester provided by the present utility model includes: a pallet 1, a longitudinal driving unit 2, a first lifting driving unit 3, a second lifting driving unit 4, a control device, and a machine shell 5.

[0034] A tray 6 is positioned and placed on the pallet 1. On both sides of the front end of the pallet 1, L-shaped angle plates 11 are fixedly connected respectively. At the top of the rear end, one or two or three or more positioning blocks 12 are fixedly connected. In this embodiment, it is preferably that two positioning blocks 12 are horizontally fixedly connected to the top of the rear end of the pallet 1. The upper ends of the angle plates 11 extend above the top surface of the pallet 1 and form a positioning structure for positioning the tray 6 with the positioning blocks 12. The tray 6 is made of bakelite, and a row of positioning grooves 61 are horizontally arranged at intervals thereon. The number of the positioning grooves 61 is two or three or four or more. In this embodiment, it is preferably that ten positioning grooves 61 are provided. The positioning grooves 61 are used for positioning and placing the safety switch 9. Handles 62 are respectively connected to the left and right ends of the tray 6.

[0035] The longitudinal driving unit 2 is drivingly connected to the pallet 1. The longitudinal driving unit 2 is used to drive the pallet 1 to move longitudinally. The longitudinal driving unit 2 is a cylinder or a hydraulic cylinder or an electric cylinder. In this embodiment, it is preferably that the longitudinal driving unit 2 is a cylinder, and its driving end is connected to the connecting block fixedly connected to the pallet 1.

[0036] The longitudinal driving unit 2 is fixedly connected to the bottom plate 21. The supporting plate 1 and the bottom plate 21 are longitudinally slidably matched through a guide rail and a slider. Among them, the guide rail is fixedly connected to the bottom of the supporting plate 1, and the slider is fixedly connected to the bottom plate 21.

[0037] The first lifting driving unit 3 is drivingly connected to the mounting frame 7 arranged above the tray 6. The first lifting driving unit 3 is used to drive the mounting frame 7 to lift. The first lifting driving unit 3 is a cylinder or a hydraulic cylinder or an electric cylinder. In this embodiment, the first lifting driving unit 3 is preferably a cylinder, and its driving end is fixedly connected to the mounting frame 7. A plurality of groups of electrical connection probes 71 are horizontally arranged at the rear end of the mounting frame 7. The number of groups of the electrical connection probes 71 is the same as the number of positioning grooves 61. The number of each group of electrical connection probes 71 is two. When safety switches 9 are placed in all the positioning grooves 61 on the tray 6, the supporting plate 1 drives the tray 6 to move under the mounting frame 7, and a plurality of groups of electrical connection probes 71 correspond to the electrical connection contacts on the safety switches 9 in a row of positioning grooves 61 one by one up and down. When the first lifting driving unit 3 drives the mounting frame 7 to move downwards so that the electrical connection probes 71 contact the electrical connection contacts on the safety switches 9, the mounting frame 7 contacts the top surface of the safety switches 9.

[0038] The first lifting driving unit 3 is fixedly connected to the top plate 30. The left and right ends of the top plate 30 are respectively fixedly connected with slide rods 31. The lower ends of the slide rods 31 are fixedly connected to the bottom plate 21. Guide sleeves 32 are slidably matched on the slide rods 31. The mounting frame 7 is fixedly connected to the guide sleeves 32, so that the mounting frame 7 moves up and down smoothly.

[0039] A row of second lifting driving units 4 is arranged and fixedly connected to the mounting frame 7. The number of the second lifting driving units 4 is the same as the number of the positioning grooves 61. The driving ends of the second lifting driving units 4 are connected with key inserts 41. The second lifting driving units 4 are used to drive the key inserts 41 to lift. The second lifting driving units 4 are cylinders or hydraulic cylinders or electric cylinders. In this embodiment, the second lifting driving units 4 are preferably cylinders. When safety switches 9 are placed in all the positioning grooves 61 on the tray 6, the supporting plate 1 drives the tray 6 to move under the mounting frame 7, and a row of key inserts 41 corresponds to the jacks on the safety switches 9 placed in a row of positioning grooves 61 one by one up and down. Alarm lights 72 connected to the mounting frame 7 and electrically connected to the control device are respectively arranged at the rear sides of each key insert 41.

[0040] First buffers 81 are vertically fixedly connected to both ends of the mounting frame 7. The buffer ends of the first buffers 81 are arranged downward. When the first lifting driving unit 3 drives the mounting frame 7 to move downwards, the buffer ends of the first buffers 81 abut against the bottom plate 21 to play a buffering role.

[0041] A second buffer 82 is vertically fixed on the top plate 30. There is one, two or more second buffers 82. In this embodiment, it is preferably set that there are two second buffers 82. The buffer end of the second buffer 82 faces the mounting bracket 7. When the first lifting drive unit 3 drives the mounting bracket 7 to move upward, the mounting bracket 7 abuts against the buffer end of the second buffer 82 to play a buffering role.

[0042] A third buffer 83 and a fourth buffer 84 are longitudinally fixed on the bottom plate 21. The buffer end of the third buffer 83 faces the front side. A first stopper 13 which is arranged in the front and back corresponding manner and is fixed to the pallet 1 is arranged on the front side of the buffer end of the third buffer 83. When the longitudinal drive unit 2 drives the pallet 1 to move backward, the first stopper 13 abuts against the buffer end of the third buffer 83 to play a buffering role. The buffer end of the fourth buffer 84 faces the back side. A second stopper 14 which is arranged in the front and back corresponding manner and is fixed to the pallet 1 is arranged on the back side of the buffer end of the fourth buffer 84. When the longitudinal drive unit 2 drives the pallet 1 to move forward, the second stopper 14 abuts against the buffer end of the fourth buffer 84 to play a buffering role.

[0043] The pallet 1, the longitudinal drive unit 2, the first lifting drive unit 3, the second lifting drive unit 4 and the control device are arranged in the machine housing 5. The control device is a PLC controller. A function switch 51 and a timer 52 are connected to the machine housing 5. The longitudinal drive unit 2, the first lifting drive unit 3, the second lifting drive unit 4, the power connection probe 71, the function switch 51 and the timer 52 are respectively electrically connected to the control device. The function switch 51 includes an emergency stop switch, a start switch, a pause switch, etc., and the number is set according to the required functions. The timer 52 is used to set the aging time during the test. The control device is electrically connected to a buzzer.

[0044] After the device is started, each driving component is reset. The longitudinal driving unit 2 drives the pallet 1 to move to the front side of the machine shell 5. The first lifting driving unit 3 drives the mounting rack 7 to move up to the reset position. The second lifting driving unit 4 drives the key insert 41 to move up to the reset position. When no tray 6 is placed on the pallet 1, a plurality of safety switches 9 are placed in the positioning grooves 61 on the tray 6. Then the tray 6 is positioned and placed on the pallet 1. After starting the device, the longitudinal driving unit 2 drives the pallet 1 to drive the tray 6 to move below the mounting rack 7. At this time, several groups of power connection probes 71 on the mounting rack 7 correspond to the power connection contacts on a row of safety switches 9 one by one from top to bottom, and the key insert 41 corresponds to the jacks on the safety switches 9 from top to bottom. Then the first lifting driving unit 3 drives the mounting rack 7 to move downwards, so that the power connection probes 71 contact the power connection contacts on the safety switches 9, and the coils in the safety switches 9 are energized. Then the second lifting driving unit 4 drives the key insert 41 to move downwards so that the lower end of the key insert 41 is inserted into the jacks on the safety switches 9. Then wait. The safety switches 9 are subjected to an aging test through the control program set in the control device. After reaching the test time, the second lifting driving unit 4 drives the key insert 41 to move up and down several times to determine whether the coil locking function in the safety switch 9 is normal, so as to realize the test of the safety switch 9. If a certain safety switch 9 is a defective product, the alarm lamp 72 on the rear side of the key insert 41 cooperating with the safety switch 9 will flash to give an alarm, and the buzzer will emit an alarm sound.

[0045] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A safety switch aging tester, characterized in that: include: A support plate, on which a tray is positioned, and a row of positioning grooves for positioning the safety switch are arranged at intervals in the horizontal direction on the tray; A longitudinal driving unit, drivingly connected to the support plate, and used to drive the support plate to move longitudinally; A first lifting drive unit is connected to the mounting frame above the tray and is used to drive the mounting frame to lift. A plurality of groups of electrical probes are disposed laterally at the rear end of the mounting frame. The plurality of groups of electrical probes correspond to electrical contacts on the safety switches placed in a row of positioning grooves. A second lifting drive unit is provided in a row and fixedly connected to the mounting frame, a driving end of each of the second lifting drive units is connected to a key insert for driving the key insert to lift, and a row of key inserts corresponds to the sockets on the safety switches placed in a row of positioning grooves one by one; The control device is electrically connected to the longitudinal drive unit, the first lifting drive unit, the second lifting drive unit, and the electrical probe.

2. A safety switch aging tester according to claim 1, characterized in that: The longitudinal drive unit is fixed on the bottom plate, and the support plate and the bottom plate are longitudinally slidably matched through guide rails and sliders. When the first lifting drive unit drives the power-connecting probe to contact the power-connecting contact on the safety switch, the mounting frame contacts the top surface of the safety switch.

3. A safety switch aging tester according to claim 2, characterized in that: The first lifting drive unit is fixed on the top plate, the left and right ends of the top plate are respectively fixed with sliding rods, the lower end of the sliding rod is fixed to the bottom plate, the sliding rod is slidably matched with a guide sleeve, and the mounting frame is fixed to the guide sleeve.

4. A safety switch aging tester according to claim 1, characterized in that: First buffers are respectively vertically fixedly connected to both ends of the mounting frame, and the buffer ends of the first buffers are arranged downward.

5. A safety switch aging tester according to claim 3, characterized in that: A second buffer is vertically fixed on the top plate, and a buffer end of the second buffer faces the mounting frame.

6. A safety switch aging tester according to claim 2, characterized in that: A third buffer and a fourth buffer are longitudinally fixed to the bottom plate, the buffer end of the third buffer faces the front side, and the front side of the buffer end is provided with a first stopper corresponding to the front and rear and fixed to the support plate, the buffer end of the fourth buffer faces the rear side, and the rear side of the buffer end is provided with a second stopper corresponding to the front and rear and fixed to the support plate.

7. A safety switch aging tester according to claim 1, characterized in that: The longitudinal drive unit, the first lifting drive unit and the second lifting drive unit are air cylinders, hydraulic cylinders or electric cylinders.

8. The safety switch aging tester according to claim 1, characterized in that: L-shaped angle plates are fixedly connected to both sides of the front end of the pallet, and a positioning block is fixedly connected to the top of the rear end. The upper ends of the angle plates extend above the top surface of the pallet and form a positioning structure for positioning the pallet together with the positioning blocks.

9. The safety switch aging tester according to claim 1, characterized in that: The left and right ends of the tray are respectively connected with handles, and the rear side of each key insert is respectively provided with an alarm light connected with the mounting frame and electrically connected with the control device.

10. The safety switch aging tester according to claim 2, characterized in that: It comprises a casing, wherein the support plate, the longitudinal drive unit, the first lifting drive unit, the second lifting drive unit and the control device are arranged in the casing, the casing is connected with a function switch and a timer electrically connected to the control device, and the control device is a PLC controller.

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