Electric dynamometer with cooling device

Abstract

The utility model relates to the field of electric dynamometers, in particular to an electric dynamometer with a cooling device. The technical problems that in the using process of an existing electric dynamometer, due to high-speed rotation of a rotor, heat accumulation is generated in the electric dynamometer, however, when a fixed fan is used for heat dissipation, heat dissipation can only be conducted on a single area, and therefore the service life of the whole electric dynamometer is very prone to being affected are solved. According to the technical scheme, the electric dynamometer with the cooling device comprises a base assembly, a testing assembly, a rotating assembly and a cooling assembly, a test assembly is arranged at the upper end of the base assembly; a cooling assembly is arranged at the upper end of the testing assembly; and a rotating assembly is mounted on the cooling assembly. According to the utility model, the special swing type air cooling structure is arranged to cool the electric dynamometer, so that the multi-angle synchronous cooling of the electric dynamometer can be realized.

Description

Technical Field

[0001] The utility model relates to the field of electric dynamometers, in particular to an electric dynamometer with a cooling device. Background Art

[0002] The electric dynamometer is the core equipment in the test equipment such as the motor performance test bench, mechanical transmission test bench and engine performance test bench. For the power measurement of high-power power machinery, AC electric dynamometer is mostly used. The dynamometer is the core equipment in the test equipment such as the motor performance test bench, mechanical transmission test bench and engine performance test bench. The AC electric dynamometer uses a three-phase AC generator as a loading device, and the asynchronous motor is provided with a variable frequency drive power supply by the inverter, and its torque and speed are accurately controlled. Compared with other dynamometers, the AC dynamometer has the characteristics of easy power control, high torque and speed control accuracy, short dynamic response time, flexible and diverse structure, high efficiency and energy saving, and high reliability. However, during the use of the existing electric dynamometer, the high-speed rotation of the rotor will cause the entire electric dynamometer to generate heat accumulation. The existing process is to set a positioning fan structure for cooling and heat dissipation, but because the structure of the fan is fixed, it can often only cool and dissipate heat in a single area during cooling and heat dissipation, which in turn affects the service life of the entire electric dynamometer to a certain extent. Utility Model Content

[0003] In order to overcome the problem that heat is accumulated in the existing electric dynamometer due to the high-speed rotation of the rotor during use, the fixed fan can only cool a single area when cooling, which can easily affect the service life of the entire electric dynamometer.

[0004] The technical solution of the utility model is: an electric dynamometer with a cooling device, comprising a base assembly, a test assembly, a rotating assembly and a cooling assembly; the upper end of the base assembly is provided with a test assembly; the upper end of the test assembly is provided with a cooling assembly; and the rotating assembly is installed on the cooling assembly.

[0005] Preferably, the electric dynamometer can be positioned and fixed by the base assembly, the motor can be tested by the setting of the test assembly, the rotation adjustment of the cooling assembly can be achieved by the setting of the rotating assembly, and the cooling treatment of the test assembly can be achieved by the setting of the cooling assembly.

[0006] Preferably, the base assembly includes a fixed base, heat dissipation ribs, mounting plates, mounting holes and a mounting bracket; a plurality of heat dissipation ribs are installed at the lower end of the fixed base; a plurality of mounting plates are installed at the front and rear ends of the fixed base; a plurality of mounting holes are opened on the mounting plates; two mounting brackets are installed at the upper end of the fixed base, which can assist the test component in heat dissipation through a plurality of heat dissipation ribs.

[0007] Preferably, the test component includes a three-phase asynchronous AC motor, a torque flange sensor, a coupling and a bearing seat; the three-phase asynchronous AC motor is installed on the fixed base; a torque flange sensor is provided on one side of the three-phase asynchronous AC motor; a coupling is provided on one side of the torque flange sensor; a bearing seat is provided on one side of the coupling, so that the motor can be detected through the torque flange sensor.

[0008] Preferably, the rotating assembly includes a first rotating plate, a second rotating plate, an adjustment slot, a positioning slot, an adjustment sleeve, a connecting shaft, a telescopic sleeve, a positioning sleeve, a locking hole, a rotating plate and a servo motor; the first rotating plate is rotatably connected to the mounting frame on one side end via a rotating shaft; the second rotating plate is rotatably connected to the mounting frame on the other side end via a rotating shaft; the second rotating plate and the first rotating plate are both provided with adjustment slots, and the position of the adjustment sleeve can be adjusted through the adjustment slots.

[0009] Preferably, a plurality of positioning grooves are provided on the side end surfaces of the second rotating plate and the first rotating plate; an adjusting sleeve is slidably connected to the inner side of the adjusting groove; a connecting shaft is installed on the adjusting sleeve; a telescopic sleeve rod is rotatably connected to the outer side of the connecting shaft, and the positioning groove is set to achieve the positioning and fixation of the adjusting sleeve.

[0010] Preferably, a plurality of locking holes are provided on the telescopic sleeve; a positioning sleeve is provided on the outer side of the telescopic sleeve; a rotating plate is rotatably connected to the positioning sleeve via a rotating shaft; a servo motor is rotatably connected to the rotating plate via a rotating shaft, and the rotation of the rotating plate is adjusted by the setting of the servo motor.

[0011] Preferably, the cooling assembly includes a screw rail, a screw block and a cooling fan; a screw rail is installed between the second rotating plate and the first rotating plate; a screw block is slidably connected to the screw rail; multiple cooling fans are installed on the screw block, and the position adjustment of the cooling fan is achieved by the slidably connected screw rail and screw block.

[0012] Beneficial effects of the utility model:

[0013] 1. The electric dynamometer is cooled by setting a special swinging air cooling structure, so that multiple angles of the electric dynamometer can be cooled synchronously, so as to solve the problem that the existing electric dynamometer will generate heat accumulation in the electric dynamometer due to the high-speed rotation of the rotor during use, but the fixed fan can only cool a single area when cooling and dissipating heat, which can easily affect the service life of the entire electric dynamometer;

[0014] 2. A servo motor is set to drive the rotating plate to rotate, and the rotating rotating plate is used to drive the telescopic sleeve and the positioning sleeve to pull the adjusting sleeve to swing back and forth around the mounting frame, so that the cooling fans installed on the first rotating plate and the second rotating plate can swing and dissipate heat on the outside of the test component, and the screw slider is driven to move on the screw slider by the screw slide rail, and the cooling fan installed on the screw slider can be adjusted in position, so that multiple cooling fans can evenly dissipate heat on the outer surface of the test component, so as to further improve the cooling efficiency of the electric dynamometer, thereby improving the convenience of use of the entire electric dynamometer to a certain extent, and then greatly improving the service life of the entire electric dynamometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is a first three-dimensional structural schematic diagram of the electric dynamometer of the utility model;

[0016] Figure 2 The second three-dimensional structure schematic diagram of the electric dynamometer of the utility model is shown;

[0017] Figure 3 What is shown is a three-dimensional structural schematic diagram of the electric dynamometer test assembly of the utility model;

[0018] Figure 4 What is shown is a three-dimensional structural schematic diagram of the rotating assembly of the electric dynamometer of the present utility model.

[0019] Explanation of the accompanying drawings: 1. base assembly; 2. test assembly; 3. rotating assembly; 4. cooling assembly; 101. fixed base; 102. heat dissipation rib plate; 103. mounting plate; 104. mounting hole; 105. mounting bracket; 201. three-phase asynchronous AC motor; 202. torque flange sensor; 203. coupling; 204. bearing seat; 301. first rotating plate; 302. second rotating plate; 303. adjustment slot; 304. positioning slot; 305. adjustment sleeve; 306. connecting shaft; 307. telescopic sleeve rod; 308. positioning sleeve; 309. locking hole; 310. rotating plate; 311. servo motor; 401. screw guide rail; 402. screw slider; 403. cooling fan. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figure 1-2The utility model provides an embodiment: an electric dynamometer with a cooling device, comprising a base assembly 1, a test assembly 2, a rotating assembly 3 and a cooling assembly 4; the test assembly 2 is arranged at the upper end of the base assembly 1; the cooling assembly 4 is arranged at the upper end of the test assembly 2; the rotating assembly 3 is installed on the cooling assembly 4, and the base assembly 1 comprises a fixed base 101, a heat dissipation rib plate 102, a mounting plate 103, a mounting hole 104 and a mounting frame 105; a plurality of heat dissipation rib plates 102 are installed at the lower end of the fixed base 101; a plurality of mounting plates 103 are installed at the front and rear ends of the fixed base 101; a plurality of mounting holes 104 are opened on the mounting plate 103; two mounting frames 105 are installed at the upper end of the fixed base 101, which can assist the test assembly 2 in heat dissipation through the plurality of heat dissipation rib plates 102.

[0022] See also Figure 3-4In this embodiment, the test component 2 includes a three-phase asynchronous AC motor 201, a torque flange sensor 202, a coupling 203 and a bearing seat 204; the three-phase asynchronous AC motor 201 is installed on the fixed base 101; a torque flange sensor 202 is provided on one side of the three-phase asynchronous AC motor 201; a coupling 203 is provided on one side of the torque flange sensor 202; a bearing seat 204 is provided on one side of the coupling 203, and the torque flange sensor 202 can be used to detect the motor. The rotating component 3 includes a first rotating plate 301, a first rotating plate 302, a second rotating plate 303, and a third rotating plate 304. The second rotating plate 302, the adjusting slot 303, the positioning slot 304, the adjusting sleeve 305, the connecting shaft 306, the telescopic sleeve rod 307, the positioning sleeve 308, the locking hole 309, the rotating plate 310 and the servo motor 311; the first rotating plate 301 is rotatably connected to the mounting frame 105 on one side through the rotating shaft; the second rotating plate 302 is rotatably connected to the mounting frame 105 on the other side through the rotating shaft; the second rotating plate 302 and the first rotating plate 301 are both provided with an adjusting slot 303, and the position of the adjusting sleeve 305 can be adjusted through the adjusting slot 303, and the second rotating plate 301 is rotatably connected to the mounting frame 105 on the other side through the rotating shaft; A plurality of positioning grooves 304 are provided on the side end surfaces of the first rotating plate 301 and the first rotating plate 302; an adjusting sleeve 305 is slidably connected to the inner side of the adjusting groove 303; a connecting shaft 306 is installed on the adjusting sleeve 305; a telescopic sleeve rod 307 is rotatably connected to the outer side of the connecting shaft 306, and the positioning groove 304 is provided to realize the positioning and fixing of the adjusting sleeve 305, and a plurality of locking holes 309 are provided on the telescopic sleeve rod 307; a positioning sleeve 308 is provided on the outer side of the telescopic sleeve rod 307; a rotating plate 310 is rotatably connected to the positioning sleeve 308 through a rotating shaft; A servo motor 311 is connected through the rotation of the rotating shaft, and the rotation adjustment of the rotating plate 310 is achieved through the setting of the servo motor 311. The cooling component 4 includes a screw guide rail 401, a screw slider 402 and a cooling fan 403; a screw guide rail 401 is installed between the second rotating plate 302 and the first rotating plate 301; a screw slider 402 is slidably connected to the screw guide rail 401; a plurality of cooling fans 403 are installed on the screw slider 402, and the position adjustment of the cooling fan 403 is achieved through the slidably connected screw guide rail 401 and the screw slider 402.

[0023] During operation, the test motor is first installed on the electric dynamometer, and the AC power generated by the three-phase asynchronous AC motor 201 is inverted into DC power by a frequency converter and then inverted into AC power for grid connection. The speed and torque of the prime mover are controlled by adjusting the online current of the motor. During the operation of the three-phase asynchronous AC motor 201, a servo motor 311 can be set to drive the rotating plate 310 to rotate, and the rotating rotating plate 310 can drive the telescopic sleeve 307 and the positioning sleeve 308 to pull the adjusting sleeve 305 to swing back and forth around the mounting frame 105, so that the cooling fan 403 installed on the first rotating plate 301 and the second rotating plate 302 can swing and dissipate heat on the outside of the test component 2, and the screw slider 402 is driven to move on the screw slider 401 by the screw slide 401, and the cooling fan 403 installed on the screw slider 402 can be adjusted in position, so that multiple cooling fans 403 can evenly dissipate heat on the outer surface of the test component 2, so as to further improve the cooling efficiency of the electric dynamometer, thereby improving the convenience of use of the entire electric dynamometer to a certain extent, and then greatly improving the service life of the entire electric dynamometer.

[0024] Through the above steps, a special swinging air cooling structure is set to realize cooling of the electric dynamometer, so that multiple angles of the electric dynamometer can be cooled synchronously, so as to solve the problem that during the use of the existing electric dynamometer, heat accumulation is generated in the electric dynamometer due to the high-speed rotation of the rotor, but when the fixed fan is used for cooling and heat dissipation, it is often only possible to cool and dissipate heat in a single area, which can easily affect the service life of the entire electric dynamometer. At the same time, the electric dynamometer can be positioned and fixed by the base component 1, the motor can be tested by setting the test component 2, the rotation adjustment of the cooling component 4 can be achieved by setting the rotating component 3, and the cooling treatment of the test component 2 can be achieved by setting the cooling component 4.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An electric dynamometer with a cooling device, comprising a base assembly (1); characterized in that: It also comprises a test assembly (2), a rotating assembly (3) and a cooling assembly (4); the upper end of the base assembly (1) is provided with the test assembly (2); the upper end of the test assembly (2) is provided with the cooling assembly (4); and the rotating assembly (3) is mounted on the cooling assembly (4).

2. The electric dynamometer with a cooling device according to claim 1, characterized in that: The base assembly (1) comprises a fixed base (101), a heat dissipation rib plate (102), a mounting plate (103), a mounting hole (104) and a mounting frame (105); a plurality of heat dissipation rib plates (102) are mounted on the lower end of the fixed base (101); a plurality of mounting plates (103) are mounted on the front and rear ends of the fixed base (101); a plurality of mounting holes (104) are formed on the mounting plate (103); and two mounting frames (105) are mounted on the upper end of the fixed base (101).

3. The electric dynamometer with a cooling device according to claim 2, characterized in that: The test assembly (2) comprises a three-phase asynchronous AC motor (201), a torque flange sensor (202), a coupling (203) and a bearing seat (204); the three-phase asynchronous AC motor (201) is mounted on a fixed base (101); a torque flange sensor (202) is arranged on one side of the three-phase asynchronous AC motor (201); a coupling (203) is arranged on one side of the torque flange sensor (202); and a bearing seat (204) is arranged on one side of the coupling (203).

4. The electric dynamometer with a cooling device according to claim 2, characterized in that: The rotating assembly (3) comprises a first rotating plate (301), a second rotating plate (302), an adjusting slot (303), a positioning slot (304), an adjusting sleeve (305), a connecting shaft (306), a telescopic sleeve rod (307), a positioning sleeve (308), a locking hole (309), a rotating plate (310) and a servo motor (311); the first rotating plate (301) is rotatably connected to a mounting frame (105) on one side end via a rotating shaft; the second rotating plate (302) is rotatably connected to a mounting frame (105) on the other side end via a rotating shaft; and the adjusting slot (303) is provided on both the second rotating plate (302) and the first rotating plate (301).

5. The electric dynamometer with a cooling device according to claim 4, characterized in that: A plurality of positioning grooves (304) are provided on the side end surfaces of the second rotating plate (302) and the first rotating plate (301); an adjusting sleeve (305) is slidably connected to the inner side of the adjusting groove (303); a connecting shaft (306) is installed on the adjusting sleeve (305); and a telescopic sleeve rod (307) is rotatably connected to the outer side of the connecting shaft (306).

6. The electric dynamometer with a cooling device according to claim 5, characterized in that: A plurality of locking holes (309) are provided on the telescopic sleeve (307); a positioning sleeve (308) is provided on the outer side of the telescopic sleeve (307); a rotating plate (310) is rotatably connected to the positioning sleeve (308) via a rotating shaft; and a servo motor (311) is rotatably connected to the rotating plate (310) via a rotating shaft.

7. The electric dynamometer with a cooling device according to claim 4, characterized in that: The cooling assembly (4) comprises a screw rail (401), a screw slider (402) and a cooling fan (403); the screw rail (401) is installed between the second rotating plate (302) and the first rotating plate (301); the screw slider (402) is slidably connected to the screw rail (401); and a plurality of cooling fans (403) are installed on the screw slider (402).

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