Function testing device for frequency converter of elevator door motor

Abstract

The utility model provides a function testing device for an elevator door motor frequency converter, which comprises a detection cabinet, and a detection device is integrated on the cabinet surface of the detection cabinet. A fixed plate, a movable plate, a load loading mechanism, a first door motor, a second door motor and a frequency converter are arranged in the detection cabinet, and the load loading mechanism is used for adjusting the horizontal position of the movable plate relative to the fixed plate so as to tighten or loosen the cog belt; the detection device is connected with the frequency converter, the first door motor and the second door motor through detection lines to obtain detection parameters, and control assemblies of the frequency converter, the first door motor and the second door motor are also integrated in the operation area of the cabinet face of the detection cabinet. The testing device has the advantages of being capable of providing a load testing function, high in integration level and capable of reducing operation difficulty.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a function testing device for an elevator door motor frequency converter. Background Art

[0002] Elevators refer to permanent transportation equipment serving in medium and high-rise buildings, and elevator door motors are transmission devices installed on elevator doors to directly control the opening and closing of elevator doors. Existing elevator door motors mainly use permanent magnet synchronous motors, which have the characteristics of high efficiency and high power density. They are representatives of high-performance motors. Since the door motor itself has no control function, it needs to be operated with the help of a frequency converter. The elevator door motor frequency converter can realize S-shaped acceleration and deceleration control of the elevator door switch, so that the acceleration of the elevator door is moderate during opening and closing, while the acceleration of the intermediate process is relatively high, which not only ensures the opening and closing efficiency of the elevator door, but also has higher safety. Using a frequency converter to adjust the speed of the elevator door is more energy-saving and more efficient than speed regulation with series resistance.

[0003] The basic function test items of the door motor inverter during factory inspection include: digital input test, communication test, motor tuning test, load test, etc.

[0004] The existing testing method is to use a multimeter, mechanical switch, circuit breaker, etc. to perform functional tests on the assembled inverter one by one on the workbench. On the one hand, testing on the workbench is inconvenient to operate and has low testing efficiency. On the other hand, wires leak out, posing a safety hazard, and the existing testing method cannot perform load testing on the inverter.

[0005] In order to improve the detection efficiency of door motor inverters and reduce the labor intensity of workers, it is necessary to design a basic function test device for door motor inverters, which should not only be easy to operate, but also meet the requirements of safe and reliable structure, complete detection items, high detection efficiency and low labor intensity. Utility Model Content

[0006] The purpose of the utility model is to address the deficiencies of the prior art and thus provide an elevator door motor inverter function testing device which can provide a load testing function and has high integration and reduces the difficulty of operation.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an elevator door motor inverter function test device, including a detection cabinet, a detection device is integrated on the cabinet surface of the detection cabinet, and the operation panel of the detection device is uniformly arranged in the operation area of ​​the cabinet surface of the detection cabinet;

[0008] The testing cabinet is provided with a fixed plate, a movable plate, a load loading mechanism, a first door motor, a second door motor and a frequency converter. The fixed plate is fixed inside the cabinet, and the movable plate and the fixed plate can cooperate with each other in horizontal sliding. The first door motor is installed on the fixed plate, and the second door motor is installed on the movable plate. The testing cabinet is provided with a detection position for installing the frequency converter, and the frequency converter is installed in the detection position and connected to the first door motor. The first door motor and the second door motor cooperate with each other through a pulley and a toothed belt transmission. The load loading mechanism is used to adjust the horizontal position of the movable plate relative to the fixed plate to tighten or relax the toothed belt.

[0009] The detection device is connected to the frequency converter, the first door motor and the second door motor through a detection circuit to obtain detection parameters. The control components of the frequency converter, the first door motor and the second door motor are also integrated in the operating area of ​​the detection cabinet.

[0010] Preferably, a limit plate for limiting the horizontal displacement stroke of the movable plate is provided on the fixed plate.

[0011] Preferably, the detection cabinet includes a cabinet body and a box cover, the detection device and the control component are integrated on the box cover, and the fixed plate, movable plate, load loading mechanism, first door motor, second door motor and inverter are all arranged in the cabinet body.

[0012] Preferably, the load loading mechanism includes a thrust ball bearing, a support block, a nut, a screw and a handle, and mounting holes are correspondingly provided in the outer bending area of ​​the fixed plate and the outer bending area of ​​the movable plate. The nut is fixed at the mounting hole of the fixed plate, and the support block is fixed at the mounting hole of the movable plate. The inner end of the screw is rotatably matched with the support block through the thrust ball bearing, the middle threaded section of the screw is matched with the nut thread, and the handle is installed on the outer end of the screw.

[0013] Preferably, the handle is detachably connected to the outer end of the screw rod via a top screw.

[0014] Preferably, a gasket is installed on the outer side of the screw rod at the support block, a retaining spring is installed between the outer side of the gasket and the screw rod, and the gasket cooperates with the retaining spring to limit the axial displacement of the inner end of the screw rod relative to the support block.

[0015] Preferably, the detection device includes a voltmeter and an ammeter, the control component includes a control switch, a digital tube and a socket, and the voltmeter, ammeter, control switch, digital tube and socket are all mounted on the guide rail inside the box cover by interference fit.

[0016] Preferably, the bottom end of the fixing plate is connected to the bottom plate of the cabinet through a first reinforcing rib, and the top end of the fixing plate is connected to the side plate of the cabinet through a second reinforcing rib.

[0017] Preferably, a control board and an interface board for driving two door motors are also integrated inside the cabinet.

[0018] Preferably, the box cover and the cabinet body are detachably connected via bolts.

[0019] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0020] 1. Two door motors are set in the detection cabinet, one is fixed and the other is relatively movable. The two are connected by belt drive. By adjusting the load loading mechanism, the second door motor applies load to the first door motor. The first door motor is connected to the inverter to be detected. Then, the data during the detection process is recorded with the help of the voltmeter and ammeter integrated in the detection cabinet, thereby completing the detection of the inverter under load, greatly improving the detection capability.

[0021] 2. The detection components and control components are integrated into one detection cabinet, which frees your hands during operation and only requires the operation panel, greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is an overall diagram of an elevator door motor inverter function test device.

[0023] Figure 2 yes Figure 1 AA section view.

[0024] Figure 3 It is a structural schematic diagram of the relative movement of the fixed plate and the movable plate in the utility model.

[0025] Figure 4 It is a schematic diagram of other structures inside the detection cabinet in the utility model.

[0026] Figure 5 It is a structural principle diagram of the load loading mechanism in the utility model.

[0027] In the figure: 1. voltmeter; 2. ammeter; 3. box cover; 4. cabinet; 5. switch; 6. socket; 7. digital tube; 8. guide rail; 9. fixing plate; 10. terminal; 11. first door motor; 12. power box; 13. first reinforcing rib; 14. sliding plate; 15. load loading mechanism; 16. connecting plate; 17. second reinforcing rib; 18. inverter; 19. toothed belt; 20. pulley; 21. support column; 22. wiring groove; 23. support top screw; 24. control board; 25. interface board; 26. thrust ball bearing; 27. support block; 28. nut; 29. ​​screw; 30. handle; 31. top screw; 32. retaining spring; 33. gasket. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0029] like Figure 1-Figure 5 As shown, a functional test device for an elevator door motor inverter includes a detection cabinet. Specifically, in this embodiment, the detection cabinet includes a cabinet body 4 and a box cover 3. The box cover 3 and the cabinet body 4 are detachably connected by bolts. The box cover 3 integrates detection devices and control devices, and the cabinet body 4 integrates functional devices used by the inverter to be detected.

[0030] One side of the box cover is integrated with detection devices such as a voltmeter 1, an ammeter 2, and control components such as a control switch 5, a digital tube 7, and a socket 6. The interior of these components is stuck on the guide rail 8 inside the box cover 3 by interference fit. The operation panel of the detection device is uniformly arranged in the operation area of ​​the box cover 3 to facilitate detection. The interior is connected to various components after line arrangement, and a patented wiring groove 22 for wiring management is set in the cabinet.

[0031] A fixed plate 9 , a movable plate 14 , a load loading mechanism 15 , a first door motor 11 , a second door motor (not shown) and a frequency converter 18 are arranged in the cabinet body 4 of the detection cabinet. The fixed plate 9 is fixed inside the cabinet body 1 .

[0032] The movable plate 14 and the fixed plate 9 can be matched to slide horizontally, the first door motor 11 is installed on the fixed plate 9, and the second door motor (not shown) is installed on the movable plate 14. A detection position for installing the inverter 18 is provided in the cabinet 4, and the inverter 18 is installed in the detection position and connected to the first door motor 11. The first door motor 11 and the second door motor (not shown) are matched through a pulley 20 and a toothed belt 19. The load loading mechanism 15 is used to adjust the horizontal position of the movable plate 14 relative to the fixed plate 9 so that the toothed belt 19 is tightened or relaxed to achieve load support.

[0033] The detection device is connected to the frequency converter 18, the first door motor 11 and the second door motor (not shown) through a detection circuit to obtain detection parameters. The control components of the frequency converter 18, the first door motor 11 and the second door motor (not shown) are also integrated in the operating area of ​​the box cover.

[0034] In order to prevent the movable plate 14 from being displaced beyond a range, a limit plate for limiting the horizontal displacement stroke of the movable plate 14 is provided on the fixed plate 9 .

[0035] To protect the stability of the internal structure, the lower end of the fixed plate 9 is fixed to the bottom plate of the cabinet by a first reinforcing rib 13 and is tightened by a support column 21. The upper end of the fixed plate 9 is fixed to the inner wall of the cabinet by a second reinforcing rib 17 and a connecting plate 16. A supporting top screw 23 is provided for the connecting plate 16 to prevent the connecting plate from collapsing.

[0036] The cabinet 4 is also provided with a power box 12 for installing a power supply and a connection terminal 11 for supplying power to components, as well as a control board 24 and an interface board 25 for driving a door motor.

[0037] In this embodiment, the load loading mechanism includes a thrust ball bearing 26, a support block 27, a nut 28, a screw 29 and a handle 30. The outer bending area of ​​the fixed plate 9 and the outer bending area of ​​the movable plate 14 are correspondingly provided with mounting holes. The nut 28 is fixed at the mounting hole of the fixed plate 9, and the support block 27 is fixed at the mounting hole of the movable plate 14. The inner end of the screw 29 is rotatably matched with the support block 27 through the thrust ball bearing 26, and the middle threaded section of the screw 29 is threadedly matched with the nut 28. The handle 30 is installed on the outer end of the screw 29, and the handle 30 is detachably connected to the outer end of the screw 29 through a top screw 31.

[0038] To ensure the stability of the screw operation, a gasket 33 is installed on the outer side of the screw 29 located at the support block 27, and a retaining spring 32 is installed between the outer side of the gasket 33 and the screw 29. The gasket 33 and the retaining spring 32 are used to limit the axial displacement of the inner end of the screw 29 relative to the support block 27, providing an axial preload for the screw 29, so that the inner end of the screw 29 clamps the support block 27 using the thrust ball bearing 26 and the gasket 33, thereby ensuring the stability of the rotation of the screw 29.

[0039] Technical principle:

[0040] After the inverter 18 to be tested is installed in place, the circuit is powered on and connected in place, the handle 30 is rotated to make the screw 29 drive the movable plate 14 to move synchronously inward, the distance between the two door motors is shortened, the load is reduced, the two door motors and the inverter are started, and the parameters of the inverter can be tested;

[0041] On the contrary, the handle 30 is rotated to make the screw rod drive the movable plate 14 to move synchronously outward, so that the distance between the two door motors is separated, the load is increased, the two door motors and the inverter are started, and the parameters of the inverter are tested.

[0042] At this point, the parameter detection work on the inverter under load change state is completed.

[0043] Finally, it should be noted that: The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. An elevator door motor inverter function test device, characterized in that: It comprises a detection cabinet, on the cabinet surface of which a detection device is integrated, and an operation panel of the detection device is uniformly arranged in an operation area of ​​the cabinet surface of the detection cabinet; The testing cabinet is provided with a fixed plate, a movable plate, a load loading mechanism, a first door motor, a second door motor and a frequency converter. The fixed plate is fixed inside the cabinet, and the movable plate and the fixed plate can cooperate with each other in horizontal sliding. The first door motor is installed on the fixed plate, and the second door motor is installed on the movable plate. The testing cabinet is provided with a detection position for installing the frequency converter, and the frequency converter is installed in the detection position and connected to the first door motor. The first door motor and the second door motor cooperate with each other through a pulley and a toothed belt transmission. The load loading mechanism is used to adjust the horizontal position of the movable plate relative to the fixed plate to tighten or relax the toothed belt. The detection device is connected to the frequency converter, the first door motor and the second door motor through a detection circuit to obtain detection parameters. The control components of the frequency converter, the first door motor and the second door motor are also integrated in the operating area of ​​the detection cabinet.

2. The elevator door motor inverter function test device according to claim 1, characterized in that: The fixed plate is provided with a limit plate for limiting the horizontal displacement stroke of the movable plate.

3. The elevator door motor inverter function test device according to claim 1, characterized in that: The detection cabinet comprises a cabinet body and a box cover, the detection device and the control component are integrated on the box cover, and the fixed plate, the movable plate, the load loading mechanism, the first door motor, the second door motor and the inverter are all arranged in the cabinet body.

4. The elevator door motor inverter function test device according to claim 3 is characterized in that: The load loading mechanism includes a thrust ball bearing, a support block, a nut, a screw and a handle. The outer bending area of ​​the fixed plate and the outer bending area of ​​the movable plate are correspondingly provided with mounting holes. The nut is fixed at the mounting hole of the fixed plate, and the support block is fixed at the mounting hole of the movable plate. The inner end of the screw is rotatably matched with the support block through the thrust ball bearing, the middle threaded section of the screw is matched with the nut thread, and the handle is installed on the outer end of the screw.

5. The elevator door motor inverter function test device according to claim 4, characterized in that: The handle is detachably connected to the outer end of the screw rod through a top screw.

6. The elevator door motor inverter function test device according to claim 4, characterized in that: A gasket is installed at the outer side of the screw rod, and a retaining spring is installed between the outer side of the gasket and the screw rod. The gasket cooperates with the retaining spring to limit the axial displacement of the inner end of the screw rod relative to the support block.

7. The elevator door motor inverter function test device according to claim 3, characterized in that: The detection device includes a voltmeter and an ammeter, and the control component includes a control switch, a digital tube and a socket. The voltmeter, the ammeter, the control switch, the digital tube and the socket are all mounted on the guide rail in the box cover through interference fit.

8. The elevator door motor inverter function test device according to claim 7, characterized in that: The bottom end of the fixing plate is connected to the bottom plate of the cabinet through a first reinforcing rib, and the top end of the fixing plate is connected to the side plate of the cabinet through a second reinforcing rib.

9. The elevator door motor inverter function test device according to claim 8, characterized in that: The cabinet also has integrated therein a control board and an interface board for driving two door motors.

10. The elevator door motor inverter function test device according to claim 3, characterized in that: The box cover and the cabinet body are detachably connected via bolts.

Images