Device and method for testing transmission capacity of worm gearbox of ring main unit

Abstract

The application discloses a device and method for testing the transmission capacity of a ring net cabinet worm gear box, which comprises a test base plate, a test top plate, a first gear, a second gear, a current detection mechanism and a torque limiter. The test top plate is fixed above the test base plate, and the first gear and the second gear are meshed with each other and arranged between the test base plate and the test top plate. The first gear is connected with the test base plate and the test top plate through a first transmission shaft, and the second gear is connected with the test base plate and the test top plate through a second transmission shaft. The upper end of the first transmission shaft extends out of the test top plate and is used for transmission connection with an output shaft of a worm gear box to be tested, and the upper end of the second transmission shaft extends out of the test top plate and is transmission connected with the torque limiter. The current detection mechanism is used for monitoring the current of the worm gear box to be tested. The application solves the problem that there is a lack of reasonable test device for the transmission capacity of the worm gear box, and the worm gear box is prone to slipping in actual application.

Description

Technical Field

[0001] This application relates to the technical field of worm gear box testing devices, and more specifically, to a device and method for testing the transmission capability of a worm gear box in a ring main unit. Background Technology

[0002] As a crucial component of the electric operating mechanism of ring main units, the worm gearbox's transmission capacity is a key factor determining the quality of electric operation. However, in actual production, only the individual components of the worm gearbox undergo heat treatment; the entire worm gearbox (including assembly specifications and the fit between parts) is not subjected to qualification testing. This leads to numerous instances of worm gearbox slippage observed in actual applications due to inadequate assembly and component handling, severely impacting construction schedules and the stability of State Grid operations. Summary of the Invention

[0003] The main purpose of this application is to provide a device for testing the transmission capacity of the worm gear box of a ring main unit, so as to solve the problem that there is no reasonable testing device for the transmission capacity of the worm gear box in the related technology, which leads to the phenomenon of worm gear box slippage in actual use, seriously affecting the construction period and the stability of the State Grid operation.

[0004] To achieve the above objectives, this application provides a device for testing the transmission capability of a worm gearbox in a ring main unit. The device includes: a test base plate, a test top plate, a first gear, a second gear, a current detection mechanism, and a torque limiter; wherein, The test top plate is fixed above the test bottom plate, and the first gear and the second gear mesh with each other and are disposed between the test bottom plate and the test top plate; The first gear is connected to the test base plate and the test top plate via a first drive shaft, and the second gear is connected to the test base plate and the test top plate via a second drive shaft; The upper end of the first drive shaft extends out to the test top plate and is used for drive connection with the output shaft of the worm gear box to be tested; the upper end of the second drive shaft extends out to the test top plate and is drive connection with the torque limiter. The current detection mechanism is used to monitor the current of the worm gear box under test.

[0005] Furthermore, the current detection mechanism includes a current relay, which is connected in series in the motor circuit of the worm gear box under test to detect the current under the operating state of the worm gear box under test. When the current exceeds the rated current of the worm gear box under test, the current relay is activated.

[0006] Furthermore, the diameter of the first gear is larger than the diameter of the second gear.

[0007] Furthermore, the upper end of the test top plate is provided with several positioning pins, which are used to cooperate with and position the worm gear box to be tested.

[0008] Furthermore, the test top plate is equipped with mounting holes for test abnormality indicator lights, test start button, and test stop button. A test abnormality indicator light is provided in the mounting hole of the test abnormality indicator light. The test abnormality indicator light is connected to the current relay and is used to light up as a reminder when the current relay is activated. A test start button is installed inside the test start button mounting hole, and a test stop button is installed inside the test stop button mounting hole.

[0009] Furthermore, the test base plate and the test top plate are fixedly connected by several base columns.

[0010] Furthermore, the upper end of the first drive shaft extends out of the test top plate and is connected to a clutch, which is used to drive the output shaft of the worm gear box to be tested.

[0011] According to another aspect of this application, a method for testing the transmission capability of a worm gear box in a ring main unit is provided, employing the aforementioned apparatus for testing the transmission capability of a worm gear box in a ring main unit, and comprising the following steps: Connect the current relay in series in the motor circuit of the worm gear box under test, and set the torque limit of the torque limiter and the rated current of the current relay according to the performance of the worm gear box under test. The worm gear box to be tested is mounted on the test top plate, and the output shaft of the worm gear box to be tested is connected to the first transmission shaft. The worm gear box under test is energized to output torque to the first gear. When the torque limiter slips and the current flowing through the current relay is the rated current, the current relay will not operate. At this time, the torque of the worm gear box to be tested meets the requirements. When the torque limiter does not activate but the current relay activates, it indicates that the current in the motor circuit is greater than the rated current, and the torque of the worm gear box under test does not meet the requirements.

[0012] In this embodiment, a test base plate, a test top plate, a first gear, a second gear, a current detection mechanism, and a torque limiter are provided. The test top plate is fixed above the test base plate, and the first and second gears mesh and are disposed between the test base plate and the test top plate. The first gear is connected to the test base plate and the test top plate via a first drive shaft, and the second gear is connected to the test base plate and the test top plate via a second drive shaft. The upper end of the first drive shaft extends out of the test top plate and is used for transmission connection with the output shaft of the worm gear box under test. The upper end of the second drive shaft extends out of the test top plate and is used for transmission connection with the torque limiter. The current detection mechanism is used to monitor the electrical current of the worm gear box under test. This device utilizes a current detection mechanism and a torque limiter to test the motor current and output torque of the worm gearbox under test. Based on the results of the current detection mechanism and the action of the torque limiter, it determines whether the transmission capacity of the worm gearbox meets the requirements. This achieves a simple and convenient way to test the transmission capacity of worm gearboxes. The entire testing device is low in manufacturing cost and highly reliable, greatly improving the efficiency of testing the transmission capacity of worm gearboxes. Furthermore, it solves the problem of the lack of a suitable testing device for the transmission capacity of worm gearboxes in related technologies, which leads to slippage of the worm gearbox in practical applications, seriously affecting the construction period and the stability of the State Grid's operation. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a structural schematic diagram according to an embodiment of this application; Figure 2 This is a side view structural diagram according to an embodiment of this application; Figure 3 This is a front view structural diagram according to an embodiment of this application; Among them, 1 is the mounting hole for the test abnormality indicator light, 2 is the mounting hole for the test start button, 3 is the mounting hole for the test stop button, 4 is the torque limiter, 5 is the second gear, 6 is the clutch, 7 is the positioning pin, 8 is the first gear, 9 is the first drive shaft, 10 is the second drive shaft, 11 is the base column, 12 is the test base plate, and 13 is the test top plate. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0015] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0016] In this application, the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily used to better describe this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0017] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0018] Furthermore, the terms "set up," "equipped with," "connected," and "fixed" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0019] In addition, the term "multiple" should mean two or more.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] As a crucial component of the electric operating mechanism of ring main units, the worm gearbox's transmission capacity is a key factor determining the quality of electric operation. However, in actual production, only the individual components of the worm gearbox undergo heat treatment; the entire worm gearbox (including assembly specifications and the fit between parts) is not subjected to qualification testing. This leads to numerous instances of worm gearbox slippage observed in actual applications due to inadequate assembly and component handling, severely impacting construction schedules and the stability of State Grid operations.

[0022] To solve the above technical problems, such as Figures 1 to 3 As shown in the figure, this application embodiment provides a device for testing the transmission capability of a worm gear box in a ring main unit. The device includes: a test base plate 12, a test top plate 13, a first gear 8, a second gear 5, a current detection mechanism, and a torque limiter 4; wherein, The test top plate 13 is fixed above the test bottom plate 12, and the first gear 8 and the second gear 5 mesh with each other and are disposed between the test bottom plate 12 and the test top plate 13; The first gear 8 is connected to the test base plate 12 and the test top plate 13 via the first transmission shaft 9, and the second gear 5 is connected to the test base plate 12 and the test top plate 13 via the second transmission shaft 10; The upper end of the first drive shaft 9 extends out to the test top plate 13 and is used for drive connection with the output shaft of the worm gear box to be tested. The upper end of the second drive shaft 10 extends out to the test top plate 13 and is drive connection with the torque limiter 4. The current detection mechanism is used to monitor the current of the worm gearbox under test. Specifically, the current detection mechanism includes a current relay, which is connected in series in the motor circuit of the worm gearbox under test to detect the current during the operation of the worm gearbox. The current relay activates when the current exceeds the rated current of the worm gearbox under test.

[0023] In this embodiment, the testing device mainly consists of a test base plate 12, a test top plate 13, a first gear 8, a second gear 5, a current detection mechanism, and a torque limiter 4. The test base plate 12 and the test top plate 13 are both flat plate structures, arranged vertically with a certain height difference, utilizing the space created by this height difference to mount the first gear 8 and the second gear 5. The test base plate 12 and the test top plate 13 are fixedly connected by a base rod, specifically by bolts. A first drive shaft 9 is mounted on the first gear 8. The upper end of the first drive shaft 9 is rotatably connected to the test top plate 13 via a bearing, and the lower end is rotatably connected to the test base plate 12 via a bearing. A second drive shaft 10 is mounted on the second gear 5. The upper end of the second drive shaft 10 is rotatably connected to the test top plate 13 via a bearing, and the lower end is also rotatably connected to the test base plate 12 via a bearing.

[0024] The first drive shaft 9 is used to connect to the output shaft of the worm gearbox under test. During testing, a current relay is connected in series in the motor circuit of the worm gearbox under test. The torque limiter 4 and the rated current of the current relay are set according to the performance of the worm gearbox under test. The worm gearbox under test is mounted on the test top plate 13, and the output shaft of the worm gearbox under test is connected to the first drive shaft 9. The worm gearbox under test is energized to output torque to the first gear 8. Since the first gear 8 meshes with the second gear 5, the second gear 5 will output torque to the torque limiter 4. When the torque limiter 4 slips and the current flowing through the current relay is the rated current, the current relay does not operate. At this time, the torque of the worm gearbox under test meets the requirements. When the torque limiter 4 does not operate and the current relay operates, it indicates that the current in the motor circuit is greater than the rated current. At this time, the torque of the worm gearbox under test does not meet the requirements. In this embodiment, the torque limiter 4 is set to 0-5N.

[0025] This embodiment achieves the goal of testing the motor current and output torque of the worm gearbox under test using a current detection mechanism and a torque limiter 4. Based on the results of the current detection mechanism and the action of the torque limiter 4, it determines whether the transmission capacity of the worm gearbox under test meets the requirements. This realizes a simple and convenient way to test the transmission capacity of the worm gearbox. The entire testing device has low manufacturing cost and high reliability, which can greatly improve the efficiency of testing the transmission capacity of the worm gearbox. It also solves the problem in related technologies that there is no reasonable testing device for the transmission capacity of the worm gearbox, which leads to the phenomenon of worm gearbox slippage in actual use, seriously affecting the construction period and the stability of the State Grid operation.

[0026] To facilitate the use of torque limiter 4, such as Figure 1 As shown, in this embodiment, the diameter of the first gear 8 is larger than the diameter of the second gear 5. That is, the first gear 8, which is directly connected to the worm gear box to be tested, is the large gear, and the gear directly connected to the torque limiter 4 is the small gear, so that there is a large transmission ratio between the large gear and the small gear.

[0027] To facilitate the fixing of the worm gear box under test during testing, this embodiment provides several positioning pins 7 at the upper end of the test top plate 13. These positioning pins 7 are used to cooperate with and position the worm gear box under test. Correspondingly, the worm gear box under test has positioning holes that match the positioning pins 7. The positioning pins 7 engage with the positioning holes in a plug-in manner to position the worm gear box under test. The distribution and number of the positioning pins 7 on the test top plate 13 can be adjusted according to the structure of the worm gear box under test.

[0028] To further facilitate testing operations, such as Figure 1 As shown, in this embodiment, the test top plate 13 is provided with a test abnormality indicator light mounting hole 1, a test start button mounting hole 2, and a test stop button mounting hole 3; A test abnormality indicator light is installed in the test abnormality indicator light mounting hole 1. The test abnormality indicator light is connected to the current relay and is used to light up as a reminder when the current relay is activated. A test start button is installed in mounting hole 2. This button can be connected to the motor circuit inside the worm gear box under test, energizing the motor circuit when the start button is pressed. Similarly, a test stop button is installed in mounting hole 3, also connected to the motor circuit inside the worm gear box under test, de-energizing the motor circuit when the stop button is pressed. The stop button can be connected to a test fault indicator light, allowing both to operate synchronously.

[0029] To facilitate the connection and disconnection of the first drive shaft 9 and the worm gear box under test, in this embodiment, a test top plate 13 extends from the upper end of the first drive shaft 9 and is connected to a clutch 6. The clutch 6 is used to drive the output shaft of the worm gear box under test.

[0030] According to another aspect of this application, a method for testing the transmission capability of a worm gear box in a ring main unit is provided, employing the aforementioned apparatus for testing the transmission capability of a worm gear box in a ring main unit, and comprising the following steps: Connect the current relay in series in the motor circuit of the worm gear box under test. Set the torque limit of the torque limiter 4 and the rated current of the current relay according to the performance of the worm gear box under test. The worm gear box to be tested is installed on the test top plate 13, and the output shaft of the worm gear box to be tested is connected to the first transmission shaft 9. The worm gear box under test is energized to output torque to the first gear 8; When torque limiter 4 slips and the current flowing through the current relay is the rated current, the current relay will not operate. At this time, the torque of the worm gear box to be tested meets the requirements. When the torque limiter 4 does not activate but the current relay activates, it indicates that the current in the motor circuit is greater than the rated current, and the torque of the worm gear box under test does not meet the requirements.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for testing the transmission capability of a worm gear box in a ring main unit, comprising an apparatus for testing the transmission capability of a worm gear box in a ring main unit, characterized in that, The device includes: a test base plate, a test top plate, a first gear, a second gear, a current detection mechanism, and a torque limiter; wherein, The test top plate is fixed above the test bottom plate, and the first gear and the second gear mesh with each other and are disposed between the test bottom plate and the test top plate; The first gear is connected to the test base plate and the test top plate via a first drive shaft, and the second gear is connected to the test base plate and the test top plate via a second drive shaft; The upper end of the first drive shaft extends out to the test top plate and is used for drive connection with the output shaft of the worm gear box to be tested; the upper end of the second drive shaft extends out to the test top plate and is drive connection with the torque limiter. The current detection mechanism is used to monitor the current of the worm gear box under test, including the following steps: connecting a current relay in series in the motor circuit of the worm gear box under test, setting the torque limit of the torque limiter and the rated current of the current relay according to the performance of the worm gear box under test; The worm gear box to be tested is mounted on the test top plate, and the output shaft of the worm gear box to be tested is connected to the first transmission shaft. The worm gear box under test is energized to output torque to the first gear. When the torque limiter slips and the current flowing through the current relay is the rated current, the current relay will not operate. At this time, the torque of the worm gear box to be tested meets the requirements. When the torque limiter does not activate but the current relay activates, it indicates that the current in the motor circuit is greater than the rated current, and the torque of the worm gear box under test does not meet the requirements.

2. The method for testing the transmission capability of a worm gear box in a ring main unit according to claim 1, characterized in that: The current detection mechanism includes a current relay, which is connected in series in the motor circuit of the worm gear box under test to detect the current under the operating state of the worm gear box. The current relay is activated when the current exceeds the rated current of the worm gear box under test.

3. The method for testing the transmission capability of a worm gear box in a ring main unit according to claim 2, characterized in that: The diameter of the first gear is larger than the diameter of the second gear.

4. The method for testing the transmission capability of a worm gear box in a ring main unit according to claim 3, characterized in that: The upper end of the test top plate is provided with several positioning pins, which are used to cooperate with and position the worm gear box to be tested.

5. The method for testing the transmission capability of a worm gear box in a ring main unit according to claim 4, characterized in that: The test top plate is provided with mounting holes for a test abnormality indicator light, a test start button, and a test stop button. A test abnormality indicator light is provided in the mounting hole of the test abnormality indicator light. The test abnormality indicator light is connected to the current relay and is used to light up as a reminder when the current relay is activated. A test start button is installed inside the test start button mounting hole, and a test stop button is installed inside the test stop button mounting hole.

6. The method for testing the transmission capability of a worm gear box in a ring main unit according to claim 5, characterized in that: The test base plate and the test top plate are fixedly connected by several base columns.

7. The method for testing the transmission capability of a worm gear box in a ring main unit according to claim 1, characterized in that: The upper end of the first drive shaft extends out of the test top plate and is connected to a clutch, which is used to drive the output shaft of the worm gear box to be tested.

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