A drum motor load testing device

Abstract

The application provides a kind of roller motor load test device, belongs to motor load test technical field, including base, motor, brake disc, brake and cooling system.The application provides a kind of roller motor load test device, brake disc is fixed on the rotor of motor, provides load for motor by brake disc clamping brake disc through brake.The support leg is fixedly installed on the base and is located at the two sides of brake, the support leg is fixedly installed with water distribution pipe, the water distribution pipe is connected with external water source through water pump, the water pump transports high-pressure water into water distribution pipe, the water distribution pipe on the two sides of brake sprays water to brake disc and brake through nozzle simultaneously, to realize the cooling of brake disc and brake, so that brake disc and brake always maintain in reasonable temperature interval, avoid the phenomenon that the traction load received by motor is reduced, to ensure the accuracy of test result.

Description

Technical Field

[0001] This application belongs to the field of motor load testing technology, and more specifically, relates to a roller motor load testing device. Background Technology

[0002] Mine hoists are mainly used for hoisting coal, ore, and transporting materials and equipment. The drum motor is the core power unit of the mine hoist, and it needs to withstand significant workloads during operation. Load testing of the drum motor requires simulating its traction load. To simplify the load testing setup, a brake disc is typically installed on the drum motor rotor. The traction load is simulated by the interaction between the brake disc and the brake. However, friction between the brake disc and the brake causes temperature increases, reducing the coefficient of friction and resulting in a softer brake, weakening the braking force and thus reducing the traction load. This affects the accuracy of the test results. Utility Model Content

[0003] The purpose of this application is to provide a roller motor load testing device, which aims to solve the problem that existing roller motor load testing devices suffer from reduced traction load due to increased temperature of the brake disc and brake, thus affecting the accuracy of test results.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: A roller motor load testing device is provided, comprising: a base, a motor, a brake disc, a brake actuator, and a cooling system. The motor and the brake actuator are both mounted on the base. The brake disc is mounted on the rotor of the motor, and the brake actuator corresponds to the brake disc. The cooling system includes support legs, a water distribution pipe, and nozzles. The support legs are fixedly mounted vertically on the base, located on both sides of the brake actuator. The water distribution pipe is fixedly mounted on the support legs and connected to an external water source via a water pump. The nozzles are fixedly mounted on the water distribution pipe, facing the connection between the brake disc and the brake actuator.

[0005] In one possible implementation, the water distribution pipe is arranged vertically; the number of nozzles is multiple, arranged along the length of the water distribution pipe.

[0006] In one possible implementation, there are two brake discs, located at opposite ends of the motor axis; each brake disc has a brake actuator symmetrically arranged on both sides of its axis.

[0007] In one possible implementation, the top of the brake disc is provided with a protective cover, and the two ends of the protective cover are respectively fixedly connected to the top of the support leg.

[0008] In one possible implementation, a water tank is provided directly below the brake disc.

[0009] In one possible implementation, a lower support plate is fixedly installed on the outer wall of the support leg, and a guide rod is fixedly installed on the lower support plate. The guide rod is arranged vertically, and an upper pressure plate is slidably installed on the guide rod. The upper pressure plate is located above the lower support plate, and a clamping space for clamping and fixing the water distribution pipe is formed between the upper pressure plate and the lower support plate. A limiting flange is provided at the top of the guide rod, and an elastic element is installed between the limiting flange and the upper pressure plate. The elastic element is used to apply a downward force to the upper pressure plate.

[0010] In one possible implementation, the top surface of the lower support plate is provided with a positioning hole that matches the bottom of the water distribution pipe.

[0011] In one possible implementation, the top of the water distribution pipe is provided with a pipe connected to the water pump, and the upper pressure plate is provided with a clearance hole for the pipe to pass through.

[0012] In one possible implementation, a bushing is rotatably mounted on the lower support plate, the bushing's rotation axis is arranged in a vertical direction, the positioning hole is opened on the bushing, a worm gear is fixedly mounted on the bushing, the worm gear is located below the lower support plate, and a worm that meshes with the worm gear is mounted on the bottom surface of the lower support plate.

[0013] In one possible implementation, the bushing is fitted with a set screw for locking the water distribution pipe.

[0014] Compared with the prior art, the scheme shown in this application's embodiment of a roller motor load testing device has the motor and brake both mounted on a base. The brake disc is fixedly mounted on the motor rotor, and the brake disc is clamped by the brake to provide load to the motor. Support legs are fixedly mounted on the base and located on both sides of the brake. Water distribution pipes are fixedly mounted on the support legs and connected to an external water source through a water pump. The water pump delivers high-pressure water into the water distribution pipes. The water distribution pipes located on both sides of the brake simultaneously spray water onto the brake disc and brake through nozzles, thereby achieving cooling and temperature reduction of the brake disc and brake, keeping the brake disc and brake within a reasonable temperature range, avoiding a decrease in the traction load on the motor, and thus ensuring the accuracy of the test results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a drum motor load testing device provided in Embodiment 1 of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A three-dimensional structural diagram of a roller motor load testing device (with the support legs, water distribution pipe and protective cover hidden) provided in Embodiment 1 of this application; Figure 4 This is a three-dimensional structural diagram of the support leg and water distribution pipe provided in Embodiment 2 of this application; Figure 5 This is a schematic diagram of the assembly structure of the lower support plate and the upper pressure plate provided in Embodiment 2 of this application. Figure 1 ; Figure 6 This is a schematic diagram of the assembly structure of the lower support plate and the upper pressure plate provided in Embodiment 2 of this application. Figure 2 ; Figure 7 This is a cross-sectional view of the assembly structure of the lower support plate and the upper pressure plate provided in Embodiment 2 of this application; Figure 8 This is a schematic diagram of the connection structure between the water distribution pipe and the water tank provided in Embodiment 2 of this application.

[0017] In the diagram: 1. Base; 101. Support leg; 102. Water distribution pipe; 103. Nozzle; 104. Base plate; 105. H-beam; 106. Protective cover; 107. Water tank; 108. Pipeline; 109. Lower support plate; 110. Guide rod; 111. Upper pressure plate; 112. Limiting flange; 113. Elastic element; 114. Positioning hole; 115. Clearance hole; 116. Groove; 117. Bushing; 118. Worm gear; 119. Worm; 120. Set screw; 2. Motor; 3. Brake disc; 4. Brake; 5. Water pump. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] Please refer to the following: Figure 1 and Figure 2 This application describes a roller motor load testing device. The roller motor load testing device includes: a base 1, a motor 2, a brake disc 3, a brake 4, and a cooling system. The motor 2 and brake 4 are both mounted on the base 1. The brake disc 3 is mounted on the rotor of the motor 2, and the brake 4 corresponds to the brake disc 3. The cooling system includes support legs 101, a water distribution pipe 102, and nozzles 103. The support legs 101 are fixedly mounted vertically on the base 1, located on both sides of the brake 4. The water distribution pipe 102 is fixedly mounted on the support legs 101 and connected to an external water source via a water pump 5. The nozzles 103 are fixedly mounted on the water distribution pipe 102, facing the connection between the brake disc 3 and the brake 4.

[0020] This embodiment provides a roller motor load testing device. Compared with the prior art, both the motor 2 and the brake 4 are mounted on the base 1. The brake disc 3 is fixedly mounted on the rotor of the motor 2. The brake 4 clamps the brake disc 3, thereby providing a load to the motor 2. Support legs 101 are fixedly mounted on the base 1 and located on both sides of the brake 4. Water distribution pipes 102 are fixedly mounted on the support legs 101. The water distribution pipes 102 are connected to an external water source through a water pump 5. The water pump 5 delivers high-pressure water into the water distribution pipes 102. The water distribution pipes 102 located on both sides of the brake 4 spray water onto the brake disc 3 and the brake 4 simultaneously through nozzles 103, thereby achieving cooling and temperature reduction of the brake disc 3 and the brake 4. This keeps the brake disc 3 and the brake 4 within a reasonable temperature range, preventing a decrease in the traction load on the motor 2, and thus ensuring the accuracy of the test results.

[0021] After the nozzle 103 sprays water onto the brake disc 3 and the brake 4, the liquid water will vaporize into water vapor after contacting the brake disc 3 and the brake 4 due to the high temperature of the brake disc 3 and the brake 4. The water evaporates and absorbs heat, thereby carrying away the heat on the brake disc 3 and the brake 4.

[0022] In some embodiments, please refer to Figure 2The water distribution pipe 102 is arranged vertically; multiple nozzles 103 are arranged along the length of the water distribution pipe 102. In this embodiment, the support leg 101 is composed of a base plate 104 and an H-beam 105. The base plate 104 is a square steel plate, which is fixedly connected to the base 1 by bolts. The H-beam 105 is fixedly installed vertically at the center of the base plate 104 and is fixed to the base plate 104 by welding. The water distribution pipe 102 is fixedly installed on the side wall of the H-beam 105 near the brake 4, and the water distribution pipe 102 is arranged vertically on the H-beam 105. Multiple nozzles 103 are evenly arranged along the length of the water distribution pipe 102. Multiple nozzles 103 simultaneously spray water onto the brake disc 3 and the brake 4, thereby improving the cooling effect on the brake disc 3 and the brake 4.

[0023] In some embodiments, please refer to Figure 1 and Figure 3 There are two brake discs 3, located at opposite ends of the motor 2's axial direction. Each brake disc 3 has two brake actuators 4 symmetrically arranged on either side of its axial direction. In this embodiment, two brake discs 3 are fixedly installed at opposite ends of the motor 2's axial direction. The brake actuators 4 are correspondingly arranged to the brake discs 3, and are located on opposite sides of the brake disc 3's axial direction. Each brake disc 3 is matched with two brake actuators 4. The two brake actuators 4 are arranged symmetrically about the center of the brake disc 3, so both brake actuators 4 simultaneously apply force to the brake disc 3, thus ensuring the force balance of a single brake disc 3. The brake actuators 4 simultaneously apply force to both brake discs 3, and since the two brake discs 3 are located at opposite ends of the motor 2's axial direction, the force balance of the motor 2 is ensured.

[0024] In some embodiments, please refer to Figure 1 A protective cover 106 is provided on the top of the brake disc 3, and the two ends of the protective cover 106 are fixedly connected to the top of the support leg 101. In this embodiment, the protective cover 106 corresponds one-to-one with the brake disc 3. Since there are two brake discs 3, there are also two protective covers 106. The protective cover 106 is used to cover the brake disc 3, thereby preventing the brake disc 3 from being exposed and protecting the brake disc 3. This prevents the operator from contacting the high-speed rotating brake disc 3, improving the safety factor during equipment operation. Since each brake disc 3 is equipped with two brake actuators 4, and each brake actuator 4 is equipped with support legs 101 on both sides, each brake disc 3 is equipped with four support legs 101. The protective cover 106 is located between the four support legs 101, and the protective cover 106 is fixedly connected to the top of the four support legs 101 by screws.

[0025] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 8A water tank 107 is located directly below the brake disc 3. In this embodiment, the water tank 107 is placed directly below the brake disc 3. The water tank 107 has a square structure, and its outer contour is larger than the horizontal projection of the brake disc 3. Therefore, water on the brake disc 3 and the brake caliper 4 will fall into the water tank 107, thereby collecting the water and avoiding waste of water resources. The water tank 107 can also serve as a container for an external water source. The water tank 107 is connected to a water pump 5 via a pipe 108, and then the water is transported to the distribution pipe 102.

[0026] Water pump 5 delivers water from water tank 107 to water distribution pipe 102, which then distributes the water evenly to each nozzle 6. When water is sprayed onto the surface of brake disc 3, it cools the brake disc 3, preventing it from overheating due to prolonged braking and affecting braking performance. Furthermore, as the water flows across the surface of brake disc 3, it carries away dust and impurities, keeping the brake disc 3 clean and further improving braking performance. Excess water sprayed onto brake disc 3 falls back into water tank 107 along the edge of the brake disc 3, forming a recycling system. This significantly improves water resource utilization efficiency, reduces damage to the braking system caused by heat generated during frequent braking, and ensures the stable operation of the entire braking system and the safety of vehicle operation.

[0027] In some embodiments, please refer to Figures 4 to 7A lower support plate 109 is fixedly installed on the outer wall of the support leg 101. A guide rod 110 is fixedly installed on the lower support plate 109. The guide rod 110 is arranged vertically, and an upper pressure plate 111 is slidably installed on the guide rod 110. The upper pressure plate 111 is located above the lower support plate 109, and a clamping space for clamping and fixing the water distribution pipe 102 is formed between the upper pressure plate 111 and the lower support plate 109. A limiting flange 112 is provided at the top of the guide rod 110, and an elastic element 113 is installed between the limiting flange 112 and the upper pressure plate 111. The elastic element 113 is used to apply a downward force to the upper pressure plate 111. In this embodiment, the lower support plate 109 is fixed to the outer wall of the support leg 101 by screws, and the lower support plate 109 is located on the side of the support leg 101 near the brake 4. Guide rods 110 are fixedly mounted on the top of the lower support plate 109. Two guide rods 110 are cylindrical and both are vertically oriented. An upper pressure plate 111 is slidably mounted on the two guide rods 110, and has through holes that mate with the guide rods 110. The guide rods 110 ensure the stability of the upper pressure plate 111 during vertical movement, while preventing horizontal displacement and rotation. The upper pressure plate 111 can move vertically up and down on the guide rods 110, thereby changing the distance between the upper pressure plate 111 and the lower support plate 109. A limiting flange 112 is fixedly mounted on the top of the guide rods 110, preventing the upper pressure plate 111 from detaching from the guide rods 110 and providing a support point for the elastic element 113. The elastic element 113 is a compression spring, which is fitted onto the guide rod 110. The upper end of the elastic element 113 abuts against the limiting flange 112, and the lower end of the elastic element 113 abuts against the top surface of the upper pressure plate 111. The upper and lower ends of the elastic element 113 are fixedly connected to the limiting flange 112 and the upper pressure plate 111, respectively. A clamping space for clamping the water distribution pipe 102 is formed between the upper pressure plate 111 and the lower support plate 109. When the water distribution pipe 102 is not placed between the upper pressure plate 111 and the lower support plate 109, the distance between the upper pressure plate 111 and the lower pressure plate is less than the length of the water distribution pipe 102, and the elastic element 113 provides an upward pulling force to the upper pressure plate 111. When it is necessary to assemble the water distribution pipe 102 onto the support leg 101, the upper pressure plate 111 is first moved upward until the upper pressure plate 111... The distance between 11 and the lower support plate 109 is greater than the length of the water distribution pipe 102. At this time, the elastic element 113 is in a compressed state. Then, the water distribution pipe 102 is placed vertically on the lower support plate 109. The upper pressure plate 111 moves downward under the action of the elastic element 113 and abuts against the top of the water distribution pipe 102. The upper pressure plate 111 uses the elastic force of the elastic element 113 to apply a downward clamping force to the water distribution pipe 102, thereby fixing the water distribution pipe 102.

[0028] In some embodiments, please refer to Figures 4 to 7The top surface of the lower support plate 109 is provided with a positioning hole 114 that matches the bottom of the water distribution pipe 102. In this embodiment, the positioning hole 114 is located on the top surface of the lower support plate 109 and between the two guide rods 110. The positioning hole 114 is a countersunk hole and matches the bottom of the water distribution pipe 102. Placing the bottom of the water distribution pipe 102 in the positioning hole 114 restricts the horizontal position of the water distribution pipe 102 and improves the stability of the water distribution pipe 102 on the lower support plate 109.

[0029] In some embodiments, please refer to Figures 4 to 7 The top of the water distribution pipe 102 is provided with a pipe 108 connected to the water pump 5, and a clearance hole 115 is provided on the upper pressure plate 111 for the pipe 108 to pass through. In this embodiment, the top of the water distribution pipe 102 is provided with a connector for installing the pipe 108. The pipe 108 is a flexible hose, and the water distribution pipe 102 is connected to the water pump 5 through the pipe 108. Since the pipe 108 is located at the top of the water distribution pipe 102, a clearance hole 115 is provided on the upper pressure plate 111. The diameter of the clearance hole 115 is larger than the outer diameter of the pipe 108 and smaller than the outer diameter of the water distribution pipe 102. The upper pressure plate 111 has a notch 116 that runs from top to bottom through the upper pressure plate 111 and communicates with the relief hole 115. The width of the notch 116 is greater than the diameter of the pipe 108 and smaller than the diameter of the relief hole 115. Therefore, before installing the water distribution pipe 102 onto the support leg 101, the pipe 108 can be assembled onto the water distribution pipe 102 first, and then the water distribution pipe 102 can be moved horizontally between the lower support plate 109 and the upper pressure plate 111. During this process, the pipe 108 will pass through the notch 116 and move to the relief hole 115.

[0030] In some embodiments, please refer to Figures 4 to 7A bushing 117 is rotatably mounted on the lower support plate 109. The rotation axis of the bushing 117 is arranged vertically. A positioning hole 114 is formed on the bushing 117. A worm gear 118 is fixedly mounted on the bushing 117, located below the lower support plate 109. A worm 119 that meshes with the worm gear 118 is mounted on the bottom surface of the lower support plate 109. In this embodiment, the bushing 117 and the lower support plate 109 are separate structures. The bushing 117 is rotatably mounted on the lower support plate 109, and the rotation axis of the bushing 117 is arranged vertically. Since the positioning hole 114 is formed on the bushing 117, the lower end of the water distribution pipe 102 is fixedly mounted on the bushing 117. The water distribution pipe 102 can rotate around the axis with the bushing 117, thereby changing the orientation of the nozzle 103 on the water distribution pipe 102, and thus adjusting the cooling area of ​​the brake disc 3 and the brake 4. The lower end of bushing 117 extends downward to the outside of lower support plate 109. Worm gear 118 is fixedly mounted on bushing 117 and located below lower support plate 109. Worm 119 is rotatably mounted on the bottom surface of lower support plate 109 in a horizontal direction. Since worm 119 and worm gear 118 mesh with each other, the operator can rotate worm 119 to drive water distribution pipe 102 on bushing 117 to rotate around the axis, thereby adjusting the orientation of nozzle 103. Because the transmission structure of worm gear 118 and worm 119 has a self-locking function, water distribution pipe 102 will not rotate during normal operation, ensuring the stability of water distribution pipe 102 on lower support plate 109.

[0031] In some embodiments, please refer to Figures 4 to 7 The bushing 117 is fitted with a set screw 120 for locking the water distribution pipe 102. In this embodiment, a threaded hole for installing the set screw 120 is provided on the outer wall of the bushing 117, and this threaded hole communicates with the positioning hole 114. By tightening the set screw 120, the set screw 120 is pressed against the outer wall of the water distribution pipe 102, thus achieving a fixed connection between the water distribution pipe 102 and the bushing 117.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A load testing device for a drum motor, characterized in that, include: The system comprises a base, a motor, a brake disc, a brake actuator, and a cooling system. The motor and brake actuator are both mounted on the base. The brake disc is mounted on the rotor of the motor, and the brake actuator corresponds to the brake disc. The cooling system includes support legs, a water distribution pipe, and nozzles. The support legs are fixedly mounted vertically on the base, located on both sides of the brake actuator. The water distribution pipe is fixedly mounted on the support legs and connected to an external water source via a water pump. The nozzles are fixedly mounted on the water distribution pipe and face the connection between the brake disc and the brake actuator.

2. The roller motor load testing device as described in claim 1, characterized in that, The water distribution pipe is arranged vertically; the number of nozzles is multiple and they are arranged along the length of the water distribution pipe.

3. The roller motor load testing device as described in claim 1, characterized in that, There are two brake discs, located at both ends of the motor axis; each brake disc is symmetrically provided with a brake on both sides of the axis.

4. The roller motor load testing device as described in claim 1, characterized in that, The brake disc is provided with a protective cover on its top, and the two ends of the protective cover are fixedly connected to the top of the support leg.

5. The roller motor load testing device as described in claim 1, characterized in that, A water tank is located directly below the brake disc.

6. The roller motor load testing device as described in claim 1, characterized in that, A lower support plate is fixedly installed on the outer wall of the support leg, and a guide rod is fixedly installed on the lower support plate. The guide rod is arranged in a vertical direction, and an upper pressure plate is slidably installed on the guide rod. The upper pressure plate is located above the lower support plate, and a clamping space for clamping and fixing the water distribution pipe is formed between the upper pressure plate and the lower support plate. A limiting flange is provided at the top of the guide rod, and an elastic element is installed between the limiting flange and the upper pressure plate. The elastic element is used to apply a downward force to the upper pressure plate.

7. The roller motor load testing device as described in claim 6, characterized in that, The top surface of the lower support plate is provided with a positioning hole that matches the bottom of the water distribution pipe.

8. The roller motor load testing device as described in claim 6, characterized in that, The top of the water distribution pipe is provided with a pipe connected to the water pump, and the upper pressure plate is provided with a clearance hole for the pipe to pass through.

9. The roller motor load testing device as described in claim 7, characterized in that, A bushing is rotatably mounted on the lower support plate. The rotation axis of the bushing is set in the vertical direction. The positioning hole is opened on the bushing. A worm gear is fixedly mounted on the bushing. The worm gear is located below the lower support plate. A worm is installed on the bottom surface of the lower support plate and meshes with the worm gear.

10. The roller motor load testing device as described in claim 9, characterized in that, The bushing is fitted with a set screw for locking the water distribution pipe.

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