A brushless motor load detection device

Abstract

This invention discloses a brushless motor load detection device, including a worktable and a motor. A control host is fixedly connected to the worktable, and a load mechanism is fixedly connected to the worktable and located behind the control host. A threaded column is fixedly connected to the worktable. The device also includes a clamping mechanism comprising an upper clamping plate and a lower clamping plate. Sleeves are symmetrically fixed to the sides of both the upper and lower clamping plates, and these sleeves are slidably mounted on the threaded column. Limiting grooves are symmetrically formed inside the upper clamping plate, and limiting sliders are slidably installed within these grooves. A cooling mechanism is also included. The cooling mechanism assists in cooling the motor. As the motor temperature gradually increases, the heat is directly conducted to the liquid flowing inside the high-temperature resistant rubber water-conducting tank. With the continuous circulation of clean water inside the tank, the heat generated by the motor is continuously carried away, thus maintaining the motor at its normal operating temperature.

Description

Technical Field

[0001] This invention relates to a load detection device, and more particularly to a brushless motor load detection device. Background Technology

[0002] A brushless motor is a DC motor without brushes and a mechanical commutator. It achieves commutation electronically and has advantages such as high efficiency, low noise, and long life. It is widely used in drones, electric vehicles, home appliances and other fields. Motor load testing equipment is one of the important means to evaluate motor performance. By simulating the load conditions of the motor when it is working in reality, the performance of the motor can be comprehensively and accurately tested and evaluated.

[0003] For example, Chinese Patent Publication No. CN223977329U discloses a brushless motor load detection device, specifically relating to the technical field of motor load detection devices. It includes a control panel, a load component, a torque sensor, and a limiting mechanism. The load component is placed on the side of the control panel, and a torque sensor is installed on the side of the load component away from the control panel. A limiting mechanism is placed on the side of the torque sensor away from the load component, and the limiting mechanism includes a clamping component, a moving component, and a sliding component. The moving component is installed above the sliding component, and the clamping component is installed above the moving component. The control panel allows for centralized control and monitoring of each component, achieving automated detection processes and data recording, improving work efficiency and the accuracy of measurement data. However, this patent has the following problems: First, motor load testing usually requires running at more than 75% of the rated load for at least 8 hours to verify its stability and safety under near full load conditions. During long-term high load testing, the motor temperature will rise. However, load testing often only installs and fixes a single motor without the original cooling mechanism that comes with the motor. High temperature will affect the normal operation of the motor or even cause it to burn out. Secondly, different types of motors have different shapes. Taking a common round motor as an example, the clamping components set on both sides alone cannot guarantee the stable installation and testing of the motor. Summary of the Invention

[0004] The purpose of this invention is to provide a brushless motor load detection device to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a brushless motor load detection device, comprising a worktable and a motor, a control host fixedly connected to the worktable, a load mechanism fixedly connected to the worktable and located behind the control host, and a threaded column fixedly connected to the worktable, further comprising: A clamping mechanism, comprising an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are symmetrically fixed with sleeve feet on their sides, the sleeve feet are slidably mounted on threaded columns, and the upper clamping plate is symmetrically provided with limit grooves, wherein limit sliders are slidably mounted in the limit grooves, and a side limit plate is fixedly connected below the limit sliders; The cooling mechanism includes a high-temperature resistant rubber hot water bladder and a water tank. An installation groove is provided on the upper part of the lower clamping plate. The high-temperature resistant rubber hot water bladder is bonded and installed at the bottom of the installation groove. Two connecting hoses are symmetrically fixed to the lower part of the high-temperature resistant rubber hot water bladder. The front end of the connecting hose passes through the lower clamping plate, the workbench, and the water tank and is fixedly connected to the pump. The pump is fixedly installed at the bottom of the water tank.

[0006] Preferably, the threaded post is fitted with fixing bolts on its upper and lower symmetrical threads, and the fixing bolts cooperate with the sleeve feet.

[0007] Preferably, a threaded screw is rotatably installed in the limiting slide groove, and a threaded through hole is opened in the limiting slider, the threaded through hole being threadedly engaged with the threaded screw.

[0008] Preferably, a rubber contact block is fixedly attached to the underside of the upper clamping plate near the middle.

[0009] Preferably, a heat dissipation fin is fixedly connected to the bottom of the water tank.

[0010] Preferably, a pressure regulator is fixedly connected to the lower end of the connecting hose at the rear end, and the pressure regulator is located inside the water tank.

[0011] Preferably, the constant pressure device has a piston groove inside and a drain port on its outer wall. The drain port and the connecting hose are both connected to the inside of the piston groove.

[0012] Preferably, a compression spring is fixedly connected to one end of the constant pressure device, and a sealing piston is fixedly connected to the other end of the compression spring. The sealing piston is slidably installed in the piston groove.

[0013] Preferably, a limiting ring is fixed to the inner wall of the piston groove, and the limiting ring cooperates with the sealing piston.

[0014] Preferably, the high-temperature resistant rubber water-conducting bladder is made of rubber and will expand and deform after being filled with a certain amount of liquid.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Adjust the distance between the upper and lower clamping plates by rotating the fixing bolts to clamp and fix the motor. Rotating the threaded screw can drive the side limiting plate to move, reduce the distance between the two side limiting plates, and make the side limiting plate abut against the outer wall of the motor. Limit the motor from left, right and up and down, which can effectively fix the motor and can effectively fix motors of different shapes.

[0016] 2. By starting the pump, the clean water inside the water tank can be pumped into the high-temperature resistant rubber heat-conducting bladder, causing the high-temperature resistant rubber heat-conducting bladder to expand and adhere to the outer wall of the motor. As the motor temperature gradually increases, the heat will be directly conducted to the liquid flowing inside the high-temperature resistant rubber heat-conducting bladder. With the continuous circulation of clean water inside the water tank, the heat generated by the motor can be continuously removed, thereby maintaining the motor at a normal operating temperature.

[0017] 3. By utilizing the sealing piston inside the constant pressure device, a certain water pressure is required for the clean water to flow back into the water tank to push the sealing piston. Maintaining the water pressure can ensure that the internal pressure of the high-temperature resistant rubber hot water bladder is sufficient, thereby filling it with clean water to expand and adhere to the outer wall of the motor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is an exploded view of the clamping mechanism of the present invention.

[0019] In the diagram: 1. Workbench; 101. Control host; 102. Load mechanism; 103. Threaded column; 104. Fixing bolt; 2. Clamping mechanism; 3. Upper clamping plate; 301. Limiting groove; 302. Threaded screw; 303. Limiting slider; 304. Side limiting plate; 305. Rubber contact block; 4. Lower clamping plate; 401. Mounting groove; 5. Socket foot; 6. High-temperature resistant rubber water-conducting bladder; 601. Connecting hose; 7. Water tank; 701. Heat dissipation fins; 702. Pump; 8. Constant pressure device; 801. Piston groove; 802. Limiting ring; 803. Sealing piston; 804. Compression spring; 805. Drain port; 9. Motor. Detailed Implementation

[0020] 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.

[0021] like Figure 1-5 As shown, the present invention has the following specific embodiments.

[0022] Example 1 A brushless motor load detection device includes a worktable 1, a motor 9, a control host 101 fixedly connected to the worktable 1, a load mechanism 102 fixedly connected to the worktable 1 and located behind the control host 101, and a threaded post 103 fixedly connected to the worktable 1. The device also includes: The clamping mechanism 2 includes an upper clamping plate 3 and a lower clamping plate 4. Both the upper clamping plate 3 and the lower clamping plate 4 have symmetrically fixed sleeve feet 5 on their sides. The sleeve feet 5 are slidably mounted on the threaded column 103. The upper clamping plate 3 has symmetrically opened limit grooves 301. Limit sliders 303 are slidably installed in the limit grooves 301. A side limit plate 304 is fixedly connected to the bottom of the limit sliders 303. The cooling mechanism includes a high-temperature resistant rubber hot water bladder 6 and a water tank 7. An installation groove 401 is provided on the lower clamping plate 4. The high-temperature resistant rubber hot water bladder 6 is bonded to the bottom of the installation groove 401. Two connecting hoses 601 are symmetrically fixed to the bottom of the high-temperature resistant rubber hot water bladder 6. The front connecting hoses 601 pass through the lower clamping plate 4, the workbench 1, and the water tank 7 and are fixed to the pump 702. The pump 702 is fixedly installed at the bottom of the water tank 7.

[0023] In this embodiment, the motor 9 to be tested is placed between the upper clamping plate 3 and the lower clamping plate 4. The distance between the upper clamping plate 3 and the lower clamping plate 4 is adjusted to clamp and fix the motor 9 between the upper clamping plate 3 and the lower clamping plate 4, thereby restricting the movement of the motor 9 in the vertical direction. The limiting slider 303 is slidably installed inside the limiting groove 301. The movement of the limiting slider 303 can drive the side limiting plate 304 to move. The distance between the two side limiting plates 304 is adjusted so that the side limiting plates 304 abut against both sides of the motor 9, thereby restricting the movement of the motor 9 in the horizontal direction. Limiting the motor from left and right and up and down can effectively fix the motor 9. At the same time, it can effectively fix motors of different shapes. A certain amount of clean water or other liquids can be added into the water tank 7. Starting the pump 702 can pump and transport the clean water to the continuous... The hot water is supplied through the hose 601 to the high-temperature resistant rubber water-conducting bladder 6. As clean water is pumped into the hot water-conducting bladder 6, it gradually expands and adheres to the outer wall of the motor 9. The output end of the motor 9 is then connected to the load mechanism 102 via a coupling. The control host 101 controls the input voltage and current of the motor 9, thereby starting the motor 9 to drive the load. Because the hot water-conducting bladder 6 adheres to the outer wall of the motor 9, as the temperature of the motor 9 gradually increases, the heat is directly conducted to the liquid flowing inside the hot water-conducting bladder 6. With the continuous circulation of clean water inside the water tank 7, the heat generated by the motor 9 can be continuously removed, thus maintaining the motor 9 at a normal operating temperature and enabling the motor 9 to maintain high load operation for a long time.

[0024] The threaded column 103 is symmetrically threaded with fixing bolts 104. The fixing bolts 104 cooperate with the sleeve foot 5. The threaded rod 302 is rotatably installed in the limiting slide groove 301. The limiting slider 303 has a threaded through hole, which is threadedly engaged with the threaded rod 302. A rubber contact block 305 is fixedly connected to the lower part of the upper clamping plate 3 near the middle.

[0025] In this embodiment, the lower clamping plate 4 can be supported by the lower fixing bolt 104, while the upper fixing bolt 104 can press the upper clamping plate 3 downward, thereby adjusting the distance between the upper clamping plate 3 and the lower clamping plate 4 to clamp and fix the motor 9. At the same time, the height of the clamping mechanism 2 can be adjusted to keep the output end of the motor 9 concentric with the coupling of the load mechanism 102. The threaded screw 302 is threadedly engaged with the threaded through hole, and the rotation of the threaded screw 302 can drive the limit slider 303 to move. The movement of the limit slider 303 can drive the side limit plate 304 to move, thereby adjusting the distance between the two side limit plates 304.

[0026] Example 2 A heat dissipation fin 701 is fixedly connected to the bottom of the water tank 7. A constant pressure device 8 is fixedly connected to the lower end of the connecting hose 601 at the rear end. The constant pressure device 8 is located inside the water tank 7 and has a piston groove 801 inside. A drain port 805 is opened on the outer wall of the constant pressure device 8. The drain port 805 and the connecting hose 601 are both connected to the inside of the piston groove 801. A compression spring 804 is fixedly connected to one end of the constant pressure device 8, and a sealing piston 803 is fixedly connected to the other end of the compression spring 804. The sealing piston 803 is slidably installed in the piston groove 801. A limit ring 802 is fixedly connected to the inner wall of the piston groove 801. The limit ring 802 and the sealing piston 803 cooperate with each other. The high-temperature resistant rubber water-conducting bladder 6 is made of rubber and will expand and deform after being filled with a certain amount of liquid. In this embodiment, the heat dissipation fins 701 can dissipate the heat of the liquid inside the water tank 7 to the air, and the compression spring 804 can provide a certain thrust to the sealing piston 803. When the sealing piston 803 is pushed, it will press against the limiting ring 802. At this time, the sealing piston 803 is located in the middle area of ​​the piston groove 801, thereby blocking the flow of clean water through the connecting hose 601 and the piston groove 801 to the drain port 805 and back into the water tank 7. A certain water pressure is required to push the sealing piston 803 to move behind the drain port 805 so that clean water can be delivered to the drain port 805 through the piston groove 801. Maintaining water pressure can ensure that the high-temperature resistant rubber hot water bladder 6 is filled with clean water and expands to fit the outer wall of the motor 9.

[0027] The working principle and usage process of this invention are as follows: The motor 9 is placed between the upper clamping plate 3 and the lower clamping plate 4. The output end of the motor 9 is connected to the load mechanism 102 using a coupling. Then, the fixing bolt 104 is rotated to adjust the distance between the upper clamping plate 3 and the lower clamping plate 4, clamping and fixing the motor 9. Rotating the threaded screw 302 can drive the side limiting plate 304 to move, reducing the distance between the two side limiting plates 304, so that the side limiting plate 304 abuts against the outer wall of the motor 9. Starting the pump 702 can pump the clean water inside the water tank 7 into the high-temperature resistant rubber hot water bladder 6, causing the high-temperature resistant rubber hot water bladder 6 to expand and adhere to the outer wall of the motor 9. At this time, the control host 101 can be used to control the input voltage and current of the motor 9, thereby starting the motor 9 to drive the load to run.

[0028] 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 brushless motor load detection device, comprising a workbench (1) and a motor (9), wherein a control host (101) is fixedly connected to the workbench (1), a load mechanism (102) is fixedly connected to the workbench (1) and located behind the control host (101), and a threaded column (103) is fixedly connected to the workbench (1), characterized in that, Also includes: The clamping mechanism (2) includes an upper clamping plate (3) and a lower clamping plate (4). The upper clamping plate (3) and the lower clamping plate (4) are symmetrically fixed with sleeve feet (5) on their sides. The sleeve feet (5) are slidably mounted on the threaded column (103). The upper clamping plate (3) is symmetrically provided with a limiting groove (301). The limiting slide block (303) is slidably installed in the limiting groove (301). The limiting slide block (303) is fixed with a side limiting plate (304) below the limiting slide block (303). The cooling mechanism includes a high-temperature resistant rubber hot water bladder (6) and a water tank (7). An installation groove (401) is provided on the upper part of the lower clamping plate (4). The high-temperature resistant rubber hot water bladder (6) is bonded to the bottom of the installation groove (401). Two connecting hoses (601) are symmetrically fixed to the lower part of the high-temperature resistant rubber hot water bladder (6). The front end of the connecting hose (601) passes through the lower clamping plate (4), the workbench (1), and the water tank (7) and is fixed to the pump (702). The pump (702) is fixedly installed at the bottom of the water tank (7).

2. The brushless motor load detection device according to claim 1, characterized in that: The threaded column (103) is symmetrically threaded with fixing bolts (104), and the fixing bolts (104) cooperate with the sleeve (5).

3. The brushless motor load detection device according to claim 1, characterized in that: A threaded screw (302) is rotatably installed in the limiting slide groove (301), and a threaded through hole is opened in the limiting slider (303), which is threadedly engaged with the threaded screw (302).

4. The brushless motor load detection device according to claim 1, characterized in that: A rubber contact block (305) is fixedly attached to the lower part of the upper clamping plate (3) near the middle.

5. The brushless motor load detection device according to claim 1, characterized in that: The water tank (7) is fixedly connected to a heat dissipation fin (701) at the bottom.

6. The brushless motor load detection device according to claim 1, characterized in that: A constant pressure device (8) is fixedly connected to the lower end of the connecting hose (601) at the rear end, and the constant pressure device (8) is located inside the water tank (7).

7. The brushless motor load detection device according to claim 6, characterized in that: The constant pressure device (8) has a piston groove (801) inside and a drain port (805) on the outer wall of the constant pressure device (8). The drain port (805) and the connecting hose (601) are both connected to the inside of the piston groove (801).

8. The brushless motor load detection device according to claim 7, characterized in that: A compression spring (804) is fixedly connected to one end of the constant pressure device (8), and a blocking piston (803) is fixedly connected to the other end of the compression spring (804). The blocking piston (803) is slidably installed in the piston groove (801).

9. The brushless motor load detection device according to claim 8, characterized in that: A limiting ring (802) is fixedly connected to the inner wall of the piston groove (801), and the limiting ring (802) cooperates with the sealing piston (803).

10. The brushless motor load detection device according to claim 1, characterized in that: The high-temperature resistant rubber hot water bladder (6) is made of rubber and will expand and deform after being filled with a certain amount of liquid.

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