Dragging rack for electrically driven electromagnetic compatibility performance test

Abstract

The utility model relates to a twin trawling rack for electrically driven electromagnetic compatibility performance test, which comprises a first rack, a second rack and a third rack, and is characterized in that the first rack comprises a first dynamometer, a second dynamometer and a first shielding device; the second rack comprises a third dynamometer and a second shielding device; the third rack comprises a first connecting shaft system, a second connecting shaft system and a third connecting shaft system; the first connecting shaft system is in driving connection with an output shaft of the first dynamometer, the second connecting shaft system is in variable speed driving connection with an output shaft of the second dynamometer through a gearbox, and the third connecting shaft system is in driving connection with an output shaft of the third dynamometer; the double-dragging rack not only can realize a double-output-shaft sample piece test function in the prior art, but also can realize a three-output-shaft sample piece test.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor performance test technical field, concretely relates to a kind of for electric drive electromagnetic compatibility performance test is pulled to platform. BACKGROUND

[0002] Electromagnetic compatibility test platform belongs to part of anechoic chamber laboratory, for detecting the electromagnetic compatibility of motor.Performance pulled electromagnetic compatibility test platform is usually composed of anechoic chamber platform, first soundproof room platform and second soundproof room platform, each part of platform is connected by transmission component to realize power transmission, transmission component needs to pass through the electromagnetic shielding iron sheet wall of anechoic chamber.Usually, the transmission system of platform is composed of dynamometer, torque sensor, shaft coupling, bearing unit, wall-penetrating shaft assembly, constant-velocity universal shaft and other components.

[0003] In prior art, pulled electromagnetic compatibility test platform is only aimed at traditional measured sample, i.e.the traditional motor with one output shaft on each side of measured sample and coaxial two output shafts.The existing pulled electromagnetic compatibility test platform cannot test multi-shaft electric drive system integrated by driving motor and generator, and for this, the utility model provides a kind of pulled electromagnetic compatibility test platform for three-output-shaft measured sample. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of pulled platform for electric drive electromagnetic compatibility performance test, to be used for electromagnetic compatibility test for three-output-shaft electric drive system.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of pulled platform for electric drive electromagnetic compatibility performance test, including first platform, second platform and third platform, the first platform, second platform are located at the opposite sides of the third platform respectively;Wherein,

[0007] The first platform includes first pedestal and first dynamometer, second dynamometer and first shielding device mounted on first pedestal;

[0008] The second platform includes second pedestal and third dynamometer and second shielding device mounted on second pedestal;

[0009] The third platform includes third pedestal and first connecting shaft system, second connecting shaft system and third connecting shaft system mounted on third pedestal, the middle part of the third pedestal has fixed area for disposing electric drive system to be measured, the first connecting shaft system, second connecting shaft system are located at the side of fixed area towards the first platform, and the third connecting shaft system is located at the side of fixed area towards the second platform;

[0010] The first connecting shaft system is drivingly connected with the output shaft of the first dynamometer, the second connecting shaft system is drivingly connected with the output shaft of the second dynamometer through a gear box, and the third connecting shaft system is drivingly connected with the output shaft of the third dynamometer.

[0011] In one embodiment, the first stand further comprises a first gear box, two input shafts and two output shafts are arranged on opposite sides of the first gear box, the first dynamometer and the second dynamometer are arranged side by side, and the output shafts of the first dynamometer and the second dynamometer are respectively connected with one of the input shafts of the first gear box, and the two output shafts of the first gear box pass through the first shielding device and are respectively connected with the first connecting shaft system and the second connecting shaft system.

[0012] In one embodiment, the shaft spacing between the two output shafts of the first gear box is smaller than the shaft spacing between the two input shafts.

[0013] In one embodiment, the two input shafts and the two output shafts of the first gear box are respectively a first input shaft, a first output shaft, a second input shaft and a second output shaft, wherein the first input shaft and the first output shaft are the same shaft, and the second input shaft and the second output shaft are drivingly connected through a gear set in the first gear box.

[0014] In one embodiment, the number of the second connecting shaft systems of the third stand is two groups, and the two groups of the second connecting shaft systems are arranged side by side with the first connecting shaft system and are respectively located on opposite sides of the first connecting shaft system, and one of the two groups of the second connecting shaft systems is drivingly connected with the output shaft of the second dynamometer through a gear box.

[0015] In one embodiment, the third stand further comprises a second gear box, the second gear box comprises two third input shafts and three third output shafts, the two third input shafts are respectively drivingly connected with the first dynamometer and the second dynamometer, and the three third output shafts are respectively connected with the first connecting shaft system and the two groups of the second connecting shaft systems.

[0016] In one embodiment, the test stand further comprises a first soundproof room, a second soundproof room and a darkroom, and the first stand, the second stand and the third stand are respectively installed in the first soundproof room, the second soundproof room and the darkroom.

[0017] In one embodiment, the first connecting shaft system, the second connecting shaft system and the third connecting shaft system are respectively fixed to the third base through corresponding bearing units.

[0018] In one embodiment, the second bracket further comprises a coupling and a bearing seat, the output shaft of the third dynamometer is connected to the bearing unit through the coupling, and the third connecting shaft system is connected to the output shaft of the third dynamometer.

[0019] In one embodiment, the third connecting shaft system is connected to the output shaft of the third dynamometer through the second shielding device.

[0020] The utility model discloses the above-mentioned technical scheme has the beneficial effect that the utility model discloses the drag bracket can realize the double output shaft sample test function of prior art, and can realize three output shaft sample test. In addition, through the preparation of high-speed output shaft, low-speed big torque or high-speed small torque single output shaft sample test can also be satisfied, and the test parameter range is covered more widely. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The first drag bracket is shown.

[0022] Figure 2 The first bracket of the first drag bracket is shown.

[0023] Figure 3 The second bracket of the first drag bracket is shown.

[0024] Figure 4 The third bracket of the first drag bracket is shown.

[0025] Figure 5 The second drag bracket is shown.

[0026] Figure 6 The third bracket of the second drag bracket is shown. DETAILED DESCRIPTION

[0027] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, so that the purpose, characteristics and advantages of the utility model can be more clearly understood. It should be understood that the embodiments shown in the drawings are not a limitation on the scope of the utility model, but only to illustrate the essential spirit of the technical scheme of the utility model.

[0028] In the following description, certain specific details are set forth in order to provide a thorough understanding of various disclosed embodiments. However, one skilled in the relevant arts will recognize that embodiments can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, structures, and processes associated with the present application are not shown or described in order to avoid obscuring embodiments.

[0029] Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

[0030] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0031] As used in this description and the following claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0032] In the following description, for the purposes of clarity, numerous directional terms are used, for example up-down, front-rear, left-right, inward-outward, etc. These directional terms should be understood in the context of the particular embodiment. However, it will be clear to those of ordinary skill in the art that the home appliance can be used in other orientations. The directional terms merely illustrate the typical usage of the appliance.

[0033] In addition, the terms "horizontal," "vertical," "suspended," and the like do not indicate that the components must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The utility model provides a kind of for electric drive electromagnetic compatibility performance test's pair of towing rack, this pair of towing rack is mainly for the electromagnetic compatibility performance test of three parallel output shaft electric drive system, this kind of electric drive system integrates drive motor and generator, this electric drive system has three parallelly arranged output shafts, i.e., one side of electric drive system has one output shaft, the other side has two output shafts and one of them is coaxially arranged with the output shaft of the other side.

[0036] As shown in Figures 1-4 The present embodiment provides a pair of test benches, which comprises a first bench 11, a second bench 21 and a third bench 31, the first bench 11 and the second bench 21 are respectively located on the opposite sides of the third bench 31, and the first bench 11, the second bench 21 and the third bench 31 are respectively installed in the first soundproof room 1, the second soundproof room 2 and the darkroom 3.

[0037] Referring to Figure 2 The first bench 11 comprises a first base 110, a first dynamometer 111, a second dynamometer 112, a first gear box 113 and a first shielding device 114 installed on the first base 110. Two input shafts 1131 and two output shafts 1132 are respectively arranged on the opposite sides of the first gear box 113, the first dynamometer 111 and the second dynamometer 112 are arranged side by side, and the output shafts of the first dynamometer 111 and the second dynamometer 112 are respectively connected with one of the input shafts of the first gear box 113, and the two output shafts 1132 of the first gear box 113 extend through the first shielding device 114 to the darkroom 3 and are connected with the corresponding connecting shaft system on the third bench 31.

[0038] Referring to Figure 3 The second bench 21 comprises a second base 210, a third dynamometer 211, a first coupling 212, a second shielding device 213 and a bearing unit 4 installed on the second base 210. The output shaft of the third dynamometer 211 is connected with the bearing unit 4 through the first coupling 212, and is connected with the corresponding connecting shaft system on the third bench 31 through the second shielding device.

[0039] Referring to Figure 4The third rack 31 comprises a third base 310 and a first connecting shaft system 311, a second connecting shaft system 312 and a third connecting shaft system 313 installed on the third base 310. The middle part of the third base 310 has a fixing area for placing the electric drive system 5 to be tested. The first connecting shaft system 311, the second connecting shaft system 312 and the third connecting shaft system 313 are distributed on opposite sides of the fixing area and are respectively fixed to the third base 310 through corresponding bearing units 4. The first connecting shaft system 311 and the second connecting shaft system 312 are arranged side by side on the side of the fixing area facing the first soundproof room 1. One end of the first connecting shaft system 311 and the second connecting shaft system 312 is respectively connected with the two output shafts 1132 of the first gear box 113, and the other end is respectively connected with the two output shafts on one side of the electric drive system. The third connecting shaft system 313 is arranged on the side of the fixing area facing the second soundproof room 2. One end of the third connecting shaft system 313 is connected with the bearing unit 214 of the output shaft of the third dynamometer 211 through the second shielding device 213, and the other end of the third connecting shaft system 313 is connected with one output shaft on one side of the electric drive system. Thus, the three output shafts of the electric drive system to be tested are respectively connected with the first dynamometer 111, the second dynamometer 112 and the third dynamometer 211 through the first connecting shaft system 311, the second connecting shaft system 312 and the third connecting shaft system 313, so that the power output and torque characteristics of each output shaft of the drive motor of the electric drive system can be tested. In addition, for the existing electric drive system with two output shafts (one output shaft on each side of the drive motor), the drag rack of the embodiment can also test it, with one side output shaft connected with the first connecting shaft system and the other side output shaft connected with the third connecting shaft system.

[0040] Referring again to Figures 1-4 In the embodiment, the two input shafts and the two output shafts of the first gear box 113 are divided into a first input shaft, a first output shaft, a second input shaft and a second output shaft. The first input shaft and the first output shaft are the same shaft, which is connected with the first dynamometer 111 as a low-speed shaft. The second output shaft and the second input shaft are connected through a gear set in the first gear box 113, which can set any transmission ratio and is not limited to the number of transmission stages according to actual needs, and the second input shaft is connected with the second dynamometer 112. The shaft spacing between the two output shafts is smaller than the shaft spacing between the two input shafts, which solves the problem of too large shaft spacing of two dynamometers arranged side by side through the arrangement of the double-input double-output gear box, and realizes the compactness of the shaft spacing of two parallel shafts.

[0041] As Figures 5-6As shown, the embodiment provides another kind of towing bench, which is roughly same as the first kind of towing bench structure, and also includes the first bench 11, the second bench 21 and the third bench 31, the first bench 11 and the second bench 21 are respectively located at the opposite sides of the third bench 31, and the first bench 11, the second bench 21 and the third bench 31 are respectively installed in the first soundproof room 1, the second soundproof room 2 and the darkroom 3. The structure of the first bench 11, the second bench 21 and the third bench 31 is basically same as the structure of the first kind of towing bench, and the same parts are not described in detail, and the main difference is that the number of the second connecting shaft system of the third bench 31 is two groups, and the two groups of the second connecting shaft system are respectively the second connecting shaft system 312a and 312b, and the two groups of the second connecting shaft system 312a and 312b are arranged side by side with the first connecting shaft system 311 and located at the opposite sides of the first connecting shaft system 311, so as to meet that the electric drive system of the existing left-handed and right-handed automobile can be directly selected for connection test.

[0042] Referring to Figure 6 , the third bench 31 also includes the second gear box 314, the second gear box 314 includes two third input shafts 3141 and three third output shafts 3142, the two third input shafts 3141 are respectively connected with the two output shafts of the first gear box 113, and the three third output shafts 3142 are respectively connected with the first connecting shaft system 311 and the two groups of the second connecting shaft system 312a and 312b. The output shaft in the middle of the second gear box 314 is a low-speed shaft, that is, the output shaft connected with the first connecting shaft system 311 is a low-speed shaft, and the output shafts on the left and right sides are high-speed output shafts and have the same output speed, that is, the output shafts connected with the second connecting shaft system 312a and 312b are high-speed shafts; one of the two high-speed output shafts participates in work during operation.

[0043] The preferred embodiments of the utility model have been described in detail above, but it should be understood that after reading the above teaching content of the utility model, those skilled in the art can make various changes or modifications to the utility model. These equivalent forms also fall within the scope defined by the claims attached to the present application.

Claims

1. A counter-bench for electrical drive electromagnetic compatibility performance test, characterized in that, The test bench comprises a first stand, a second stand and a third stand, the first stand and the second stand are respectively located on opposite sides of the third stand, and the third stand comprises a third base and a first connecting shaft system, a second connecting shaft system and a third connecting shaft system installed on the third base. The first stand comprises a first base and a first dynamometer, a second dynamometer and a first shielding device installed on the first base. The second stand comprises a second base and a third dynamometer and a second shielding device installed on the second base. The third stand comprises a third base and a first connecting shaft system, a second connecting shaft system and a third connecting shaft system installed on the third base, the middle part of the third base has a fixing area for placing the electric drive system to be tested, the first connecting shaft system and the second connecting shaft system are located on one side of the fixing area towards the first stand, and the third connecting shaft system is located on the other side of the fixing area towards the second stand. The first connecting shaft system is drivingly connected with the output shaft of the first dynamometer, the second connecting shaft system is drivingly connected with the output shaft of the second dynamometer through a gear box, and the third connecting shaft system is drivingly connected with the output shaft of the third dynamometer.

2. The pair of jigs as recited in claim 1, wherein The first stand further comprises a first gear box, two input shafts and two output shafts are arranged on opposite sides of the first gear box, the first dynamometer and the second dynamometer are arranged side by side, the output shafts of the first dynamometer and the second dynamometer are connected with one of the input shafts of the first gear box respectively, and the two output shafts of the first gear box pass through the first shielding device and are connected with the first connecting shaft system and the second connecting shaft system respectively.

3. The pair of tables as claimed in claim 2, wherein The shaft spacing between the two output shafts of the first gear box is smaller than the shaft spacing between the two input shafts.

4. The pair of tables as claimed in claim 2, wherein The two input shafts and the two output shafts of the first gear box are a first input shaft, a first output shaft, a second input shaft and a second output shaft, wherein the first input shaft and the first output shaft are the same shaft, and the second input shaft and the second output shaft are drivingly connected through a gear set in the first gear box.

5. The pair of tables as claimed in claim 1, wherein The number of the second connecting shaft system of the third stand is two groups, the two groups of the second connecting shaft system are arranged side by side with the first connecting shaft system and located on opposite sides of the first connecting shaft system respectively, and one of the two groups of the second connecting shaft system is drivingly connected with the output shaft of the second dynamometer through a gear box.

6. The pair of tables as claimed in claim 5, wherein The third stand further comprises a second gear box, the second gear box comprises two third input shafts and three third output shafts, the two third input shafts are drivingly connected with the first dynamometer and the second dynamometer respectively, and the three third output shafts are connected with the first connecting shaft system and the two groups of the second connecting shaft system respectively.

7. The pair of tables of claim 1, wherein, The test bench further comprises a first soundproof room, a second soundproof room and a darkroom, and the first stand, the second stand and the third stand are respectively installed in the first soundproof room, the second soundproof room and the darkroom.

8. The pair of tables of claim 1, wherein, The first connecting shaft system, the second connecting shaft system and the third connecting shaft system are respectively fixed to the third base through corresponding bearing units.

9. The pair of tables of claim 1, wherein, The second bracket further comprises a coupling and a bearing unit, and the output shaft of the third dynamometer is connected with the third connecting shaft system through the coupling and the bearing unit.

10. The pair of tables as claimed in claim 9, wherein, The third connecting shaft system is connected with the output shaft of the third dynamometer through the second shielding device.

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