CN-224231925-U - Overspeed switch testing arrangement

CN224231925UCN 224231925 UCN224231925 UCN 224231925UCN-224231925-U

Abstract

The utility model relates to an overspeed switch testing device, and belongs to the technical field of testing equipment. The technical scheme of the utility model is that the frame (1) comprises an upper layer and a lower layer, the motor (4) is arranged at the lower layer of the frame (1), the frequency converter (2) and the alarm device box (3) are arranged at the upper layer of the frame (1), the overspeed switch (6) is fixedly connected with the output end of the motor (4) through the coupler (5), the input end of the motor (4) is connected with the frequency converter (2), and the overspeed switch (6) is connected with the alarm device box (3). The utility model has the beneficial effects that the overspeed switch performance is determined by adjusting the rotating speed of the motor controlled by the frequency converter to reach the overspeed switch limit value, so that the inspection and test requirements of the equipment safety protection device are effectively met, effective technical support is provided for equipment safety protection and equipment fault prevention, the protection function is ensured to be perfect, and the equipment fault risk is reduced.

Inventors

ZHU JIANG
FENG XING
WANG CHAO
JIANG YANLONG
GAO YUAN
HE YONGLONG
ZHANG ZENGBO
SONG YANCHAO

Assignees

唐山港集团港机船舶维修有限公司
唐山港集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250516

Claims (5)

1. The overspeed switch testing device is characterized by comprising a frame (1), a frequency converter (2), an alarm device box (3), a motor (4), a coupler (5) and an overspeed switch (6), wherein the frame (1) comprises an upper layer and a lower layer, the motor (4) is arranged on the lower layer of the frame (1), the frequency converter (2) and the alarm device box (3) are arranged on the upper layer of the frame (1), the overspeed switch (6) is fixedly connected with the output end of the motor (4) through the coupler (5), the input end of the motor (4) is connected with the frequency converter (2), and the overspeed switch (6) is connected with the alarm device box (3).
2. The overspeed switch testing apparatus of claim 1, wherein the frame (1) further comprises a bracket (7), a handle (8), a frame (9) and universal wheels (10), the frame (9) is arranged on the periphery of the frame (1), the bracket (7) is fixed on the lower layer of the frame (1), the overspeed switch (6) is mounted on the bracket (7), the handle (8) is mounted on two sides of the top of the frame (9), and the universal wheels (10) are mounted on the bottom of the frame (9).
3. An overspeed switch testing device according to claim 2, characterized in that said brackets (7) are four in shape and size matching the model of the overspeed switch (6).
4. The overspeed switch testing device of claim 1, wherein the coupling (5) is a spring high-torque threaded flexible coupling, and the number of the couplings (5) is three and is matched with the type of the overspeed switch (6).
5. The overspeed switch testing device of claim 1, wherein the casing of the alarm device box (3) is a prefabricated box, and a 24V switching power supply, a 24V relay and a 24V buzzer are arranged in the prefabricated box and are sequentially connected.

Description

Overspeed switch testing arrangement Technical Field The utility model relates to an overspeed switch testing device, and belongs to the technical field of testing equipment. Background The overspeed switch is an important safety protection device and is used for overspeed detection of a shore bridge lifting motor, a pitching motor and a field bridge lifting motor. The overspeed switch is connected with the motor or the winding drum through the coupler, when the rotating speed of the motor is too high and reaches the limit value set by the overspeed switch, the normally closed point of the overspeed switch is disconnected, the motor is triggered to stop and interlock, meanwhile, the hardware loop protection of the motor is triggered, the motor is powered off, and the protection function of the motor is realized. Because the lifting motor and the pitching motor belong to important equipment and do not have overspeed switch testing conditions, whether the field overspeed switch protection function is good or not can not be confirmed in the safety device checking and testing process, and the equipment fault risk exists. Disclosure of Invention The utility model aims to provide an overspeed switch testing device, which can be used for determining overspeed switch performance by adjusting the rotating speed of a motor controlled by a frequency converter to reach an overspeed switch limit value, so that the inspection and test requirements of an equipment safety protection device are effectively met, effective technical support is provided for equipment safety protection and equipment fault prevention, and the protection function is ensured to be perfect, thereby reducing the equipment fault risk, the detection process is simple and convenient to operate, and the detection device is portable and stable, and solves the problems in the background art. The technical scheme is that the overspeed switch testing device comprises a frame, a frequency converter, an alarm device box, a motor, a coupler and an overspeed switch, wherein the frame comprises an upper layer and a lower layer, the motor is arranged at the lower layer of the frame, the frequency converter and the alarm device box are arranged at the upper layer of the frame, the overspeed switch is fixedly connected with the output end of the motor through the coupler, the input end of the motor is connected with the frequency converter, and the overspeed switch is connected with the alarm device box. The frame still contains bracket, handle, frame and universal wheel, the frame sets up in the periphery of frame, and the bracket is fixed in the frame lower floor, and overspeed switch installs on the bracket, and the handle is installed in the top both sides of frame, and the bottom at the frame is installed to the universal wheel. The bracket has four types, and the shape and the size of the bracket are matched with the model of the overspeed switch. The coupling is a spring high-torque threaded flexible coupling, and the number of the coupling is three and is matched with the type of the overspeed switch. The alarm device box shell is a prefabricated box, and a 24V switching power supply, a 24V relay and a 24V buzzer are arranged in the prefabricated box and are sequentially connected. The utility model has the beneficial effects that the overspeed switch performance is determined by adjusting the rotating speed of the motor controlled by the frequency converter to reach the overspeed switch limit value, the inspection and test requirements of the equipment safety protection device are effectively met, the effective technical support is provided for the equipment safety protection and the equipment fault prevention, the protection function is ensured to be perfect, the equipment fault risk is reduced, the detection process is simple and convenient to operate, and the detection device is portable and stable. Drawings FIG. 1 is a schematic view of the overall structure of the present utility model; FIG. 2 is a schematic view of the structure of the frame of the present utility model; FIG. 3 is a schematic view of the structure of the bracket of the present utility model; FIG. 4 is a schematic diagram of a second embodiment of the bracket of the present utility model; FIG. 5 is a schematic diagram III of the structure of the bracket of the present utility model; FIG. 6 is a schematic diagram of a fourth embodiment of the bracket of the present utility model; in the figure, a frame 1, a frequency converter 2, an alarm device box 3, a motor 4, a coupler 5, an overspeed switch 6, a bracket 7, a handle 8, a frame 9 and universal wheels 10. Detailed Description In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments, an