Twin-dragging test bench

Abstract

The utility model discloses a twin trawling test bench, comprising a test platform, and an accompanying test motor, a gearbox, a torque sensor and a tested main shaft which are installed on the test platform. A motor shaft of the accompanying test motor is in transmission connection with a torque input end of the gearbox, one end of the torque sensor is in transmission connection with a torque output end of the gearbox, and the other end of the torque sensor is in transmission connection with the tested main shaft; a sliding detection assembly, a transverse adjustment assembly and a longitudinal adjustment assembly are arranged on the test platform; the sliding detection assembly is arranged on the test platform in a sliding mode and used for detecting the coaxiality of a motor shaft of the accompanying test motor and the torque input end of the gearbox and the coaxiality of the two ends of the torque sensor, the torque output end of the gearbox and the detected main shaft. According to the twin-trawling test bench disclosed by the utility model, the positions of the accompanying test motor, the gearbox, the torque sensor and the tested main shaft in the transverse direction and the longitudinal direction can be adjusted through the sliding detection assembly, the transverse adjustment assembly and the longitudinal adjustment assembly; therefore, the coaxiality of the gearbox, the accompanying test motor and the torque sensor and the coaxiality of the torque sensor and the tested main shaft are ensured and adjusted, and the accuracy of the test result of the test bench is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing equipment, in particular to a back-to-back test bench. Background Art

[0002] After the motor is produced, it needs to be tested, mainly testing the torque, speed, power, no-load conditions, etc. of the motor. In the prior art, the motor is generally tested by a back-to-back detection device.

[0003] However, in the prior art, the back-to-back test bench cannot ensure high coaxiality between the devices connected by transmission, which will cause large deviations in the detection results and affect the accuracy of the measurement results.

[0004] Therefore, it is necessary to propose a back-to-back test bench that can ensure the coaxiality between the rotating shafts of each device, so as to improve the accuracy of the detection data. Content of the Utility Model

[0005] The utility model provides a back-to-back test bench to overcome the above problems.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A back-to-back test bench includes a test platform and a companion motor, a gearbox, a torque sensor and a spindle under test installed on the test platform;

[0008] The motor shaft of the companion motor is drivingly connected to the torque input end of the gearbox, one end of the torque sensor is drivingly connected to the torque output end of the gearbox, and the other end of the torque sensor is drivingly connected to the spindle under test; taking the axis direction of the spindle under test as the X-axis, the horizontal direction perpendicular to the X-axis is the Y-axis, and the vertical direction perpendicular to the X-axis is the Z-axis;

[0009] The test platform is provided with a sliding detection component, a lateral adjustment component and a longitudinal adjustment component; the lateral adjustment components are provided on both axial sides of the companion motor, the gearbox, the torque sensor and the spindle under test, and the lateral adjustment component is used to adjust the torque input end of the gearbox to be in the same plane as the axis of the motor shaft of the companion motor in the Y-axis direction, and to adjust the two ends of the torque sensor to be in the same plane as the axes of the spindle under test and the torque output end of the gearbox respectively;

[0010] The longitudinal adjustment components are provided at the bottoms of the companion motor, the torque sensor and the spindle under test, and the longitudinal adjustment component can adjust the axis of the motor shaft of the companion motor to be parallel to the axis of the torque input end of the gearbox in the Z-axis direction, and can adjust the axes of the two ends of the torque sensor to be parallel to the axes of the spindle under test and the torque output end of the gearbox respectively;

[0011] The sliding detection component is slidably arranged on the test platform and is used to detect the coaxiality between the motor shaft of the accompanying test motor and the torque input end of the gearbox, as well as the coaxiality between both ends of the torque sensor and the torque output end of the gearbox and the measured main shaft.

[0012] Furthermore, the lateral adjustment component includes a positioning shoulder and a radial adjustment block that are detachably installed on the test platform; the side edge of the positioning shoulder is parallel to the X-axis, and the positioning shoulder can perform preliminary positioning on the measured main shaft; at least two of the radial adjustment blocks are arranged along the X-axis direction on the positioning shoulder and are used to adjust the position of the measured main shaft in the Y-axis direction;

[0013] A number of the radial adjustment blocks are arranged on both sides of the accompanying test motor, the gearbox, and the torque sensor along the X-axis direction, and at least two radial adjustment blocks on the same side are used to adjust the positions of the accompanying test motor, the gearbox, and the torque sensor in the Y-axis direction.

[0014] Furthermore, the longitudinal adjustment component includes a number of pitching adjustment pads that are detachably installed on the test platform, and a number of pitching adjustment pads with different heights are provided at the bottoms of the accompanying test motor, the torque sensor, and the measured main shaft.

[0015] Furthermore, the sliding detection component includes a guide rail, a slider, and a dial indicator; the guide rail is arranged on the test platform along the X-axis direction, and the guide rail is arranged at the connection position between the accompanying test motor and the gearbox and at the connection positions between the torque sensor and the gearbox and the measured main shaft, and the dial indicator is slidably installed on the guide rail through the slider.

[0016] Furthermore, the motor shaft of the accompanying test motor is in transmission connection with the torque input end of the gearbox through a first coupling, one end of the torque sensor is in transmission connection with the torque output end of the gearbox through a second coupling, and the other end of the torque sensor is in transmission connection with the measured main shaft through a third coupling.

[0017] Furthermore, it further includes a main shaft support seat, and the measured main shaft is installed on the test platform through the main shaft support seat.

[0018] Furthermore, it further includes a sheet metal protective cover, and the sheet metal protective cover is provided outside the motor shaft, the torque input end of the gearbox, and the first coupling between the accompanying test motor and the gearbox; the sheet metal protective cover is provided outside the torque output end of the gearbox, the torque sensor, the second coupling, and the third coupling between the gearbox and the measured main shaft.

[0019] The beneficial effects of the present utility model are:

[0020] A drag test bench disclosed in the present utility model can adjust the positions of a test motor, a gearbox, a torque sensor, and a measured main shaft in the lateral direction and the longitudinal direction through a provided sliding detection assembly, a lateral adjustment assembly, and a longitudinal adjustment assembly, and can ensure the coaxiality of the gearbox with the test motor and the torque sensor and the coaxiality of the torque sensor with the measured main shaft, thereby improving the accuracy of the test results of the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 FIG. 1 is a schematic structural diagram of a drag test bench disclosed in an embodiment of the present utility model;

[0023] Figure 2 FIG. Figure 1 is an enlarged view of part A in FIG.

[0024] Figure 3 FIG. Figure 1 is an enlarged view of part B in FIG.

[0025] In the figure: 1. test platform; 2. test motor; 3. gearbox; 4. torque sensor; 5. measured main shaft; 6. positioning shoulder; 7. radial adjustment block; 8. guide rail; 9. slider; 10. dial indicator; 11. pitch adjustment pad; 12. first coupling; 13. second coupling; 14. third coupling; 15. main shaft support seat; 16. sheet metal protective cover; 17. anchor bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0027] As Figures 1-3 shown, a drag test bench provided in this embodiment includes a test platform 1 and a test motor 2, a gearbox 3, a torque sensor 4, and a measured main shaft 5 installed on the test platform;

[0028] The motor shaft of the accompanying test motor 2 is drivingly connected to the torque input end of the gearbox 3. One end of the torque sensor 4 is drivingly connected to the torque output end of the gearbox 3, and the other end of the torque sensor 4 is drivingly connected to the measured main shaft 5. The torque sensor 4 is used to measure the actual rotational speed and torque of the measured main shaft 5. Taking the axis direction of the measured main shaft 5 as the X-axis, the horizontal direction perpendicular to the X-axis as the Y-axis, and the vertical direction perpendicular to the X-axis as the Z-axis;

[0029] A sliding detection assembly, a lateral adjustment assembly, and a longitudinal adjustment assembly are provided on the test platform 1. The lateral adjustment assemblies are provided on both axial sides of the accompanying test motor 2, the gearbox 3, the torque sensor 4, and the measured main shaft 5. The lateral adjustment assembly is used to adjust the torque input end of the gearbox 3 to be in the same plane as the axis of the motor shaft of the accompanying test motor 2 in the Y-axis direction, and to adjust the two ends of the torque sensor 4 to be in the same plane as the axes of the measured main shaft 5 and the torque output end of the gearbox 3 respectively;

[0030] Longitudinal adjustment assemblies are provided at the bottoms of the accompanying test motor 2, the torque sensor 4, and the measured main shaft 5. The longitudinal adjustment assembly can adjust the axis of the motor shaft of the accompanying test motor 2 to be parallel to the axis of the torque input end of the gearbox 3 in the Z-axis direction, and can adjust the axes of the two ends of the torque sensor 4 to be parallel to the axes of the measured main shaft 5 and the torque output end of the gearbox 3 respectively;

[0031] The sliding detection assembly is slidably provided on the test platform 1 and is used to detect the coaxiality between the motor shaft of the accompanying test motor 2 and the torque input end of the gearbox 3, and the coaxiality between the two ends of the torque sensor 4 and the torque output end of the gearbox 3 and the measured main shaft 5.

[0032] A counter-rotating test bench disclosed by the present utility model can achieve the effects of two forms of tests, namely, from high rotational speed and low torque to low rotational speed and high torque and from low rotational speed and high torque to high rotational speed and low torque, by setting a gearbox. Moreover, by only adjusting the directions of the torque input end and the torque output end of the gearbox, the tests of detection objects with different rotational speeds and torques can be realized, and the flexibility is strong. At the same time, by setting the sliding detection assembly, the lateral adjustment assembly, and the longitudinal adjustment assembly, the positions of the accompanying test motor, the gearbox, the torque sensor, and the measured main shaft in the lateral direction (Y-axis direction) and the longitudinal direction (Z-axis direction) can be adjusted, ensuring the coaxiality between the gearbox and the accompanying test motor and the torque sensor, and the coaxiality between the torque sensor and the measured main shaft, thereby ensuring the accuracy of the detection results of the test bench.

[0033] In a specific embodiment, the lateral adjustment assembly includes a positioning shoulder 6 and a radial adjustment block 7 detachably mounted on the test platform 1; the side edge of the positioning shoulder is parallel to the X-axis, and the positioning shoulder can perform preliminary positioning on the spindle 5 to be measured; at least two radial adjustment blocks are provided on the positioning shoulder along the X-axis direction for adjusting the position of the spindle 5 to be measured in the Y-axis direction;

[0034] A spindle support seat 15 is provided on the lower side of the spindle 5 to be measured, and the spindle to be measured is mounted on the test platform 1 through the spindle support seat 15. The spindle support seat 15 with a corresponding height can be matched according to the diameter of the spindle to be measured, which is convenient for ensuring the coaxiality of the spindle to be measured and the torque sensor 4, thereby improving the accuracy of the data detection result of the spindle to be measured;

[0035] Multiple groups of mounting holes are provided on the test platform 1, and the radial adjustment block is provided with fixing holes. The fixing member can pass through the mounting holes and the fixing holes to fix the radial adjustment block on the test platform 1; during adjustment, the edge of the spindle support seat 15 provided on the lower side of the spindle 5 to be measured abuts against the edge of the positioning shoulder, and the positioning shoulder performs preliminary positioning on the spindle support seat 15 and the spindle 5 to be measured. Loosen the fixing member and finely adjust the position of the radial adjustment block on the positioning shoulder, that is, the adjustment of the position of the spindle 5 to be measured in the Y-axis direction can be realized by adjusting the position of the fixing frame. After the position of the spindle 5 to be measured is adjusted, tighten the fixing member to fix the radial adjustment block, and the adjustment of the position of the spindle 5 to be measured in the Y-axis direction is completed;

[0036] On both sides of the test motor 2, the gearbox 3, and the torque sensor 4 along the X-axis direction, there are a number of the radial adjustment blocks 7, and there are at least two radial adjustment blocks on the same side, which are used to adjust the positions of the test motor 2, the gearbox 3, and the torque sensor 4 in the Y-axis direction. The radial adjustment blocks can make the axis of the motor shaft of the test motor 2 and the axis of the input end of the gearbox 3 in the same plane in the Y-axis direction, and adjust the axes at both ends of the torque sensor 4 to be in the same plane as the axis of the measured main shaft 5 and the axis of the output end of the gearbox 3, that is, precisely adjust the positions of the test motor 2, the gearbox 3, and the torque sensor 4 in the transverse direction; at least two radial adjustment blocks are arranged at intervals on one side along the X-axis direction to ensure that the positions of the test motor 2, the gearbox 3, and the torque sensor 4 can be quickly and finely adjusted; as the dial indicator slides on the guide rail through the slider, the coaxiality between the torque input shaft of the gearbox 3 and the motor shaft of the test motor 2 and the coaxiality between both ends of the torque sensor 4 and the measured main shaft and the gearbox 3 are detected respectively. If the detected value of the dial indicator exceeds the error range, that is, the coaxiality between the transmission-connected rotating shafts is poor, then by finely adjusting the positions of the radial adjustment blocks on the test platform and cooperating with the longitudinal adjustment assembly, the positions of the test motor 2, the gearbox 3, and the torque sensor 4 are finely adjusted until the detected value of the dial indicator does not exceed the error range, and the position adjustment of the test motor 2, the gearbox 3, and the torque sensor 4 in the Y-axis direction is completed.

[0037] In a specific embodiment, the longitudinal adjustment assembly includes a plurality of pitching adjustment pads 11 detachably mounted on the test platform 1 through fasteners. A plurality of the pitching adjustment pads 11 with different heights are provided at the bottoms of the accompanying test motor, the torque sensor 4, and the bottom of the spindle under test 5 (the bottom of the spindle support 15). The pitching adjustment pads are set to different heights according to needs, so as to meet the fine adjustment of the positions of the accompanying test motor 2, the torque sensor 4, and the spindle under test 5 in the Z-axis direction. Furthermore, the motor shaft of the accompanying test motor 2 is made parallel to the axis of the torque input end of the transmission 3, and the two ends of the torque sensor 4 are respectively made parallel to the axis of the torque output end of the transmission 3 and the axis of the motor shaft of the accompanying test motor, that is, the pitching adjustment pads cooperate with the lateral adjustment assembly to precisely adjust the lateral and longitudinal positions of the test motor, the torque sensor 4, the transmission 3, and the spindle under test 5, and cooperate with the sliding detection assembly to detect the coaxiality of the connection points, so as to ensure the coaxiality between the torque input end of the transmission 3 and the motor shaft of the accompanying test motor 2, and the coaxiality between the two ends of the torque sensor 4 and the torque input end of the transmission 3 and the spindle under test 5 respectively, thereby improving the accuracy of the detection data such as torque, speed, and power of the spindle under test 5 obtained through this test bench; in this embodiment, the fasteners can be bolts, screws, etc. Threaded holes are provided on the pitching adjustment pads, on the test platform, and at the bottoms of the accompanying test motor 2, the torque sensor 4, the bottom of the spindle support under test, and the bottom of the transmission. The bolts pass through the threaded holes to fixedly lock and fix the pitching adjustment pads to the test platform and the equipment thereon; the pitching adjustment pads 11 can also be provided at the bottoms of the torque sensor 4 and the transmission 3 according to actual needs.

[0038] In a specific embodiment, the sliding detection assembly includes a guide rail 8, a slider 9, and a dial indicator 10; the guide rail 8 is arranged on the test platform 1 along the X-axis direction, and the guide rail 8 is arranged at the connection position between the accompanying test motor 2 and the transmission 3 and at the connection positions between the torque sensor 4 and the transmission 3 and the spindle under test 5. The dial indicator 10 is slidably mounted on the guide rail 8 through the slider 9 to be used for detecting the coaxiality between the motor shaft of the accompanying test motor 2 and the torque input shaft of the transmission 3, and the coaxiality between the connecting shafts at both ends of the torque sensor 4 and the torque output shaft of the transmission 3 and the spindle under test 5 respectively. If the detected value of the dial indicator exceeds the error range, the positions of the accompanying test motor 2, the transmission 3, and the torque sensor 4 are finely adjusted by adjusting the radial adjustment block and the pitching adjustment pad; the number of sliders and dial indicators is the same. In this embodiment, as Figure 1 shown, a total of two guide rails and two dial indicators are provided; the detection of coaxiality by the dial indicator is a prior art, and the principle of its use for detecting the coaxiality between different rotating shafts will not be elaborated here.

[0039] In this embodiment, the rotational speed of the test motor 2 is greater than the rotational speed of the spindle 5 to be measured, or the rotational speed of the test motor 2 is less than the rotational speed of the spindle 5 to be measured. That is, the transmission 3 can be a speed reducer or a speed increaser. When the rotational speed of the spindle 5 to be measured is greater than the rotational speed of the test motor 2, the transmission 3 is a speed increaser; when the rotational speed of the spindle 5 to be measured is less than the rotational speed of the test motor 2, the transmission 3 is a speed reducer, achieving the detection from high speed and low torque to low speed and high torque, enabling the detection of the spindle 5 to be measured with different rotational speeds and torques, having strong flexibility in use and being able to meet the actual detection needs.

[0040] In a specific embodiment, the motor shaft of the test motor 2 is drivingly connected to the torque input end of the transmission 3 through a first coupling 12. One end of the torque sensor 4 is drivingly connected to the torque output end of the transmission 3 through a second coupling 13, and the other end of the torque sensor 4 is drivingly connected to the spindle 5 to be measured through a third coupling 14. Specifically, in this embodiment, the first coupling, the second coupling, and the third coupling are all plum blossom couplings to achieve the connection between adjacent rotating shafts, realize the transmission between different rotating shafts, and finally complete the measurement of data such as the rotational speed and torque of the spindle 5 to be measured.

[0041] In a specific embodiment, it further includes a sheet metal protective cover 16. A sheet metal protective cover is provided between the test motor 2 and the transmission 3 and outside the motor shaft, the torque input end of the transmission 3, and the first coupling. A sheet metal protective cover is provided between the transmission 3 and the spindle 5 to be measured and outside the torque output end of the transmission 3 and the torque sensor 4, which can avoid the influence of external environmental factors such as temperature and vibration on the detection accuracy of the coaxiality data between the rotating shafts.

[0042] In a specific embodiment, the test platform 1 is made of cast iron material and has a hollow bottom structure, which can achieve the purpose of reducing the weight of the test platform 1 while ensuring the structural rigidity; the bottom of the test platform is fixed to the ground or the test site through anchor bolts 17.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A towing test bench, characterized in that, It includes a test platform (1), a companion motor (2), a gearbox (3), a torque sensor (4), and a spindle under test (5) installed on the test platform; The motor shaft of the companion motor (2) is drivingly connected to the torque input end of the gearbox (3), one end of the torque sensor (4) is drivingly connected to the torque output end of the gearbox (3), and the other end of the torque sensor (4) is drivingly connected to the spindle under test (5); Taking the axis direction of the spindle under test (5) as the X-axis, the horizontal direction perpendicular to the X-axis is the Y-axis, and the vertical direction perpendicular to the X-axis is the Z-axis; A sliding detection assembly, a lateral adjustment assembly, and a longitudinal adjustment assembly are provided on the test platform (1); The lateral adjustment assemblies are provided on both axial sides of the companion motor (2), the gearbox (3), the torque sensor (4), and the spindle under test (5). The lateral adjustment assembly is used to adjust the torque input end of the gearbox (3) to be in the same plane as the axis of the motor shaft of the companion motor (2) in the Y-axis direction, and to adjust the two ends of the torque sensor (4) to be in the same plane as the axes of the spindle under test (5) and the torque output end of the gearbox (3) respectively; The longitudinal adjustment assemblies are provided at the bottoms of the companion motor (2), the torque sensor (4), and the spindle under test (5). The longitudinal adjustment assembly can adjust the axis of the motor shaft of the companion motor (2) to a parallel position with the axis of the torque input end of the gearbox (3) in the Z-axis direction, and can adjust the axes of the two ends of the torque sensor (4) to be parallel to the axes of the spindle under test (5) and the torque output end of the gearbox (3) respectively; The sliding detection assembly is slidably provided on the test platform (1) and is used to detect the coaxiality between the motor shaft of the companion motor (2) and the torque input end of the gearbox (3), and the coaxiality between the two ends of the torque sensor (4) and the torque output end of the gearbox (3) and the spindle under test (5).

2. The towing test bench according to claim 1, characterized in that, The lateral adjustment assembly includes a positioning shoulder (6) and a radial adjustment block (7) detachably installed on the test platform (1); The side edge of the positioning shoulder is parallel to the X-axis, and the positioning shoulder can perform preliminary positioning on the spindle under test (5); At least two radial adjustment blocks are provided on the positioning shoulder along the X-axis direction for adjusting the position of the spindle under test (5) in the Y-axis direction; A number of radial adjustment blocks (7) are provided on both sides of the companion motor (2), the gearbox (3), and the torque sensor (4) along the X-axis direction, and at least two radial adjustment blocks on the same side are provided for adjusting the positions of the companion motor (2), the gearbox (3), and the torque sensor (4) in the Y-axis direction.

3. The towing test bench according to claim 1, characterized in that, The longitudinal adjustment assembly includes a number of pitching adjustment pads (11) detachably installed on the test platform (1), and a number of pitching adjustment pads (11) with different heights are provided at the bottoms of the companion motor (2), the torque sensor (4), and the spindle under test (5).

4. The towing test bench according to claim 1, characterized in that, The sliding detection assembly includes a guide rail (8), a slider (9), and a micrometer (10); the guide rail (8) is arranged on the test platform (1) along the X-axis direction, and the guide rail (8) is arranged at the connection position between the accompanying test motor (2) and the gearbox (3), and at the connection positions between the torque sensor (4), the gearbox (3), and the measured main shaft (5). The micrometer (10) is slidably mounted on the guide rail (8) through the slider (9).

5. The towing test bench according to claim 1, characterized in that, The motor shaft of the accompanying test motor (2) is drivingly connected to the torque input end of the gearbox (3) through a first coupling (12). One end of the torque sensor (4) is drivingly connected to the torque output end of the gearbox (3) through a second coupling (13), and the other end of the torque sensor (4) is drivingly connected to the measured main shaft (5) through a third coupling (14).

6. The towing test bench according to claim 1, characterized in that, It further includes a main shaft support seat (15), and the measured main shaft (5) is mounted on the test platform (1) through the main shaft support seat (15).

7. The tow test bench according to claim 5, characterized in that, It further includes a sheet metal protective cover (16). The sheet metal protective cover is provided outside the motor shaft, the torque input end of the gearbox (3), and the first coupling (12) between the accompanying test motor (2) and the gearbox (3); the sheet metal protective cover (16) is provided outside the torque output end of the gearbox (3), the torque sensor (4), the second coupling (13), and the third coupling (14) between the gearbox (3) and the measured main shaft (5).

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