Test bench transmission system

Abstract

The utility model discloses a test bench transmission system, which comprises a bearing seat assembly, a first part and a second part, the bearing seat assembly is arranged between a dynamometer and a test object, the first part is connected between the dynamometer and the bearing seat assembly and comprises a first transmission shaft and a first connecting disc, and the first transmission shaft is connected with the first connecting disc in a matched manner; the first connecting disc is used for limiting the radial displacement of the first transmission shaft, the second part is connected between the test object and the bearing seat assembly and comprises a second transmission shaft and a second connecting disc, the second transmission shaft is matched and connected with the second connecting disc, and the second connecting disc is used for limiting the radial displacement of the second transmission shaft. According to the test bench transmission system provided by the embodiment of the utility model, the coaxiality of the first transmission shaft, the second transmission shaft and the dynamometer shaft system is ensured, so that the bidirectional torque transmission of the test bench transmission system is more stable, and the working performance of the test bench transmission system is ensured to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of engine bench testing technology, and in particular to a test bench transmission system. Background Technology

[0002] In the field of modern engineering technology, especially in industries such as automobiles, aerospace, and shipbuilding, which involve the research and testing of power systems, accurate evaluation of engine performance is crucial.

[0003] In order to improve the accuracy of engine performance evaluation, the shaft connection between the dynamometer and the engine has gradually evolved into the current test bench transmission system. This test bench transmission system can meet many requirements such as buffering and vibration absorption, adapting to dynamic displacement, and strong versatility.

[0004] However, the coaxiality of the drive shaft of the existing test bench transmission system and the dynamometer shaft system is not easy to meet the requirements. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a test bench transmission system that makes it easy to meet the coaxiality requirements between the drive shaft of the test bench transmission system and the dynamometer shaft system, thus solving the technical problem of poor coaxiality between the drive shaft and the dynamometer shaft system in the prior art.

[0006] The test bench transmission system according to an embodiment of the present invention includes: a bearing housing assembly disposed between a dynamometer and a test object; a first part, the first part being connected between the dynamometer and the bearing housing assembly and including a first drive shaft and a first connecting plate, the first drive shaft and the first connecting plate being cooperatingly connected, the first connecting plate being used to limit the radial displacement of the first drive shaft; and a second part, the second part being connected between the test object and the bearing housing assembly and including a second drive shaft and a second connecting plate, the second drive shaft and the second connecting plate being cooperatingly connected, the second connecting plate being used to limit the radial displacement of the second drive shaft.

[0007] According to the test bench transmission system of this utility model embodiment, by setting a first connecting plate and a second connecting plate, radial displacement of the first transmission shaft and the second transmission shaft can be avoided to a certain extent, which helps to ensure the coaxiality of the first transmission shaft and the second transmission shaft. This makes it easier to meet the requirements for coaxiality between the drive shaft of the test bench transmission system and the shaft system of the dynamometer, thereby improving the performance of the test bench transmission system. This makes the bidirectional torque transmission between the dynamometer and the test object more stable, which helps to improve the accuracy of testing the test object.

[0008] In some embodiments, the first connecting plate is connected to one axial end of the first drive shaft and is connected in cooperation with the dynamometer; the second connecting plate is connected to one axial end of the second drive shaft and is connected in cooperation with the bearing housing assembly.

[0009] In some embodiments, the first connecting plate and / or the second connecting plate includes: a connecting plate body, the connecting plate body connecting the dynamometer and / or the bearing housing assembly, the connecting plate body having an assembly channel, one axial end of the first drive shaft and / or the second drive shaft being assembled in the assembly channel; and a limiting structure, the limiting structure including a plurality of limiting balls, the limiting balls being disposed on the outer peripheral wall of the assembly channel and being movable radially along the assembly channel, the plurality of limiting balls being arranged at circumferential intervals along the assembly channel, and a limiting recess being provided on the radially outer side of the first drive shaft and / or the second drive shaft, the limiting balls being limited and fitted within the limiting recess.

[0010] In some embodiments, the limiting structure further includes: a sliding sleeve, which is sleeved on the outer periphery of the assembly channel and faces the limiting ball, and the inner peripheral wall of the sliding sleeve is provided with a mating recess to avoid the limiting ball, and at least part of the limiting ball can move into the mating recess; and a reset member, which is used to drive the sliding sleeve to move away from the connecting disc body so that the inner peripheral wall of the sliding sleeve without the mating recess is mated with the limiting ball.

[0011] In some embodiments, a first mating spline is provided on the inner peripheral wall of the assembly channel, and a second mating spline is provided on the outer peripheral wall of one axial end of the first drive shaft and / or the second drive shaft, wherein the first mating spline and the second mating spline are mated and connected.

[0012] In some embodiments, the test bench transmission system further includes a limiting elastic element, which is disposed in the assembly channel and abuts against the end face of the first transmission shaft or the second transmission shaft. The limiting elastic element is used to limit the axial displacement of the first transmission shaft or the second transmission shaft.

[0013] In some embodiments, the bearing housing assembly includes: a support base having a mounting groove, the mounting groove having a first support surface and a second support surface in the radial direction of the mounting groove, the first support surface and the second support surface extending obliquely away from each other in the direction toward the opening of the mounting groove; and a bearing housing body, at least a portion of the bearing housing body being disposed within the mounting groove, the outer periphery of the bearing housing body having a first mating surface that abuts against the first support surface and a second mating surface that abuts against the second support surface.

[0014] In some embodiments, the bearing housing assembly further includes: a flexible coupling connected to one end of the bearing housing body facing the second portion, and the second connecting disc cooperating with the flexible coupling; and a connecting plate connected between the flexible coupling and the bearing housing body.

[0015] In some embodiments, one end of the connecting plate is connected to the bearing housing body via a mating structure, and the other end of the connecting plate is connected to the flexible coupling via a transition structure. The mating structure includes a first mating tooth and a second mating tooth. The first mating tooth is located at the end of the bearing housing body facing the connecting plate, and the second mating tooth is located on the connecting plate and directly opposite the first mating tooth. The first and second mating teeth mesh to achieve a mating connection between the connecting plate and the bearing housing body. The transition structure includes a transmission bearing, a transition sleeve, and a fastening threaded sleeve. The other end of the connecting plate has a mating shaft. The transition sleeve is rotatably fitted onto the outer circumference of the mating shaft via the transmission bearing. One end of the fastening threaded sleeve passes through the transition sleeve and is fixedly connected to the mating shaft. The other end of the fastening threaded sleeve is sealed to the transition sleeve. The flexible coupling is fitted onto the outer circumference of the transition sleeve and fixedly connected to the connecting plate.

[0016] In some embodiments, the flexible coupling has, in the radial direction, an internal connecting member, an adapter member, and a housing sequentially sleeved together, the adapter member being formed as an elastic element.

[0017] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a front view of the test bench transmission system, dynamometer, and test object according to some embodiments of this utility model.

[0020] Figure 2 for Figure 1 Exploded view.

[0021] Figure 3 for Figure 2 A schematic diagram of a portion of the structure from another angle.

[0022] Figure 4 for Figure 2 A schematic diagram of another part of the structure.

[0023] Figure 5This is a cross-sectional view of the first part of some embodiments of the present invention in conjunction with the bearing housing assembly.

[0024] Figure 6 for Figure 5 A magnified view of region V in the middle.

[0025] Figure 7 This is an exploded view of the first part of some embodiments of the present invention, the bearing housing assembly, and the test object.

[0026] Figure 8 This is a cross-sectional view of the second part of some embodiments of the present invention in conjunction with a test object.

[0027] Figure 9 This is a front view of the second connecting disk in some embodiments of the present invention.

[0028] Figure 10 This is a cross-sectional view of the second connecting plate according to some embodiments of the present invention.

[0029] Figure 11 This is an exploded view of the first connecting plate in some embodiments of the present invention.

[0030] Figure 12 This is a partial cross-sectional view of the first connecting plate and the first drive shaft during installation in some embodiments of the present invention.

[0031] Figure 13 for Figure 12 The main view.

[0032] Figure 14 for Figure 13 A magnified view of the central area VI.

[0033] Figure 15 This is a partial cross-sectional view of the first connecting plate and the first drive shaft after installation in some embodiments of the present invention.

[0034] Figure 16 for Figure 15 The main view.

[0035] Figure 17 This is a partial cross-sectional view of the second connecting plate and the second drive shaft after installation in some embodiments of the present invention.

[0036] Figure 18 This is a partial cross-sectional view of the first connecting plate and the first drive shaft during installation in some embodiments of the present invention.

[0037] Figure 19 for Figure 18 A magnified view of the central region XV.

[0038] Figure 20This is a cross-sectional view of the support base and the limiting ball in some embodiments of the present invention.

[0039] Figure 21 This is a side view of the first connecting disk according to some embodiments of the present invention.

[0040] Figure 22 for Figure 21 A magnified view of the central region VIII.

[0041] Figure 23 This is a side view of the second connecting disk according to some embodiments of the present invention.

[0042] Figure 24 for Figure 23 A magnified view of the central region XVI.

[0043] Figure 25 This is a side view of the first drive shaft according to some embodiments of the present invention.

[0044] Figure 26 This is a partial cross-sectional view of the first drive shaft in some embodiments of the present invention.

[0045] Figure 27 This is a half-sectional view of the second drive shaft in some embodiments of the present invention.

[0046] Figure 28 This is a side view of the second drive shaft according to some embodiments of the present invention.

[0047] Figure 29 This is a partial cross-sectional view of the second drive shaft and spline shaft in some embodiments of the present invention.

[0048] Figure 30 for Figure 29 Exploded view.

[0049] Figure 31 for Figure 29 Axonometric drawing.

[0050] Figure 32 This is a schematic diagram showing the cooperation between the bearing seat body and the second connecting disc in some embodiments of this utility model.

[0051] Figure 33 for Figure 32 Side view.

[0052] Figure 34 for Figure 32 Exploded view.

[0053] Figure 35 for Figure 32 Top view.

[0054] Figure 36This is a front view of the flexible coupling and the second connecting disc in some embodiments of the present invention.

[0055] Figure 37 for Figure 36 Exploded view.

[0056] Figure 38 for Figure 36 Side view.

[0057] Figure 39 This is a schematic diagram showing the fit between the bearing housing body and the connecting plate in some embodiments of this utility model.

[0058] Figure 40 for Figure 39 Partial sectional view.

[0059] Figure 41 This is an exploded view of the docking structure of some embodiments of the present invention.

[0060] Figure 42 for Figure 39 Exploded view.

[0061] Figure 43 This is a schematic diagram of a connecting plate according to some embodiments of the present invention.

[0062] Figure 44 This is an exploded view of the bearing spindle and connecting plate of some embodiments of this utility model.

[0063] Figure 45 for Figure 44 Partial sectional view.

[0064] Figure 46 for Figure 45 Enlarged view of XXVI.

[0065] Figure 47 This is a schematic diagram showing the fit between the bearing housing body, connecting plate, and transition structure in some embodiments of this utility model.

[0066] Figure 48 for Figure 47 Exploded view.

[0067] Figure 49 for Figure 47 A sectional view of part of the structure.

[0068] Figure 50 for Figure 49 A magnified view of the central region XXVIII.

[0069] Figure 51 This is a cross-sectional view of an elastic coupling according to some embodiments of the present invention.

[0070] Figure label:

[0071] 1000. Test bench transmission system; 100. Bearing housing assembly; 110. Support base; 111. Mounting groove; 1111. Second support surface; 120. Bearing housing body; 121. First mating surface; 122. Second mating surface; 130. Flexible coupling; 131. Internal connecting part; 132. Transition part; 133. Housing; 140. Connecting plate; 640. Mating shaft; 150. Bearing spindle; 160. Connecting pad; 2 00. First part; 210. First drive shaft; 211. Limiting recess; 212. Second mating spline; 220. First connecting plate; 221. Connecting plate body; 2211. Assembly channel; 22111. First mating spline; 222. Limiting structure; 2221. Limiting ball; 2222. Sliding sleeve; 22221. Mating recess; 2223. Reset piece; 2224. Support seat; 300. Second part; 310. Second drive shaft Driven shaft; 311, third mating spline; 320, second connecting disc; 400, limiting elastic element; 500, mating structure; 510, first mating tooth; 520, second mating tooth; 600, adapter structure; 610, transmission bearing; 620, adapter sleeve; 621, first sealing groove; 630, fastening threaded sleeve; 631, second sealing groove; 650, retaining ring; 700, first washer; 710, first bolt; 800, second washer; 810, Second bolt; 820, Second bearing; 830, First bearing; 840, Cover plate; 850, Locating bearing outer sleeve; 860, Sixth bolt; 900, Third washer; 910, Third bolt; 920, Fourth washer; 930, Fourth bolt; 940, Fifth washer; 950, Sixth washer; 960, First pin; 1110, Sensor; 1100, Dynamometer; 1200, Test object; 1210, Splined shaft. Detailed Implementation

[0072] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0073] The test bench transmission system 1000 of this utility model is described below with reference to the accompanying drawings.

[0074] Combination Figure 1 and Figure 2 As shown, the test bench transmission system 1000 is according to an embodiment of the present utility model.

[0075] It should be noted that, in related technologies, the test bench transmission system 1000 is suitable for connection between the dynamometer 1100 and the test object 1200 for bidirectional torque transmission. The test object 1200 mentioned above can be understood as the engine and gearbox assembly, which are connected in cooperation. Therefore, the connection of the test bench transmission system 1000 between the dynamometer 1100 and the test object 1200 can also be understood as the connection of the test bench transmission system 1000 between the dynamometer 1100 and the engine. Bidirectional torque transmission mainly refers to dynamometer testing and reverse towing, in order to test the engine's performance.

[0076] Combination Figure 1 and Figure 2 As shown, the test bench transmission system 1000 includes: a bearing housing assembly 100, a first part 200, and a second part 300.

[0077] Among them, combined Figure 1 and Figure 2 As shown, the bearing housing assembly 100 is located between the dynamometer 1100 and the test object 1200. This allows for the mating connection between the dynamometer 1100 and the test object 1200, facilitating the connection of the test bench transmission system 1000 between the dynamometer 1100 and the test object 1200 for bidirectional torque transmission, thus ensuring the working performance of the test bench transmission system 1000 to a certain extent.

[0078] Meanwhile, the bearing housing assembly 100 can also provide support for the test bench transmission system 1000, which can ensure the stability of the test bench transmission system 1000 to a certain extent.

[0079] It should be noted that during the test, the test object 1200 may cause certain vibration and impact to the test bench transmission system 1000. The bearing housing assembly 100 can play a certain role in buffering and vibration reduction, thereby avoiding the influence of vibration and impact on the dynamometer 1100 to a certain extent, thus improving the working stability of the dynamometer 1100 and ensuring the working performance of the dynamometer 1100 to a certain extent.

[0080] Combination Figure 1 , Figure 2 and Figure 4As shown, the first part 200 is connected between the dynamometer 1100 and the bearing housing assembly 100 and includes a first drive shaft 210 and a first connecting plate 220. The first drive shaft 210 and the first connecting plate 220 are mated together, and the first connecting plate 220 is used to limit the radial displacement of the first drive shaft 210. By connecting the first part 200 between the dynamometer 1100 and the bearing housing assembly 100, the mating connection between the dynamometer 1100 and the bearing housing assembly 100 is facilitated. This reduces the difficulty of mating the dynamometer 1100 and the bearing housing assembly 100, and also helps to ensure the working performance of the test bench transmission system 1000.

[0081] Furthermore, by configuring the first part 200 to include the first drive shaft 210 and the first connecting plate 220, and by using the first connecting plate 220 to limit the radial displacement of the first drive shaft 210, the radial displacement of the first drive shaft 210 can be avoided to a certain extent, which is beneficial to improving the positional stability of the first drive shaft 210, thereby enabling the first drive shaft 210 to stably transmit torque between the bearing housing assembly 100 and the dynamometer 1100.

[0082] Combination Figure 1 , Figure 2 and Figure 3 As shown, the second part 300 is connected between the test object 1200 and the bearing housing assembly 100 and includes a second drive shaft 310 and a second connecting plate 320. The second drive shaft 310 and the second connecting plate 320 are mated together, and the second connecting plate 320 is used to limit the radial displacement of the second drive shaft 310. By connecting the second part 300 between the test object 1200 and the bearing housing assembly 100, the mating connection between the test object 1200 and the bearing housing assembly 100 is facilitated. This reduces the difficulty of mating the test object 1200 and the bearing housing assembly 100, and also helps to ensure the working performance of the test bench transmission system 1000.

[0083] Furthermore, by configuring the second part 300 to include the second drive shaft 310 and the second connecting plate 320, and by using the second connecting plate 320 to limit the radial displacement of the second drive shaft 310, the radial displacement of the second drive shaft 310 can be avoided to a certain extent, which is beneficial to improving the positional stability of the second drive shaft 310, thereby enabling the second drive shaft 310 to stably transmit torque between the test object 1200 and the bearing housing assembly 100.

[0084] In other words, in the test bench transmission system 1000 of this application, the first transmission shaft 210 connected between the dynamometer 1100 and the bearing housing assembly 100 and the second transmission shaft 310 connected between the test object 1200 and the bearing housing assembly 100 can both avoid radial displacement to a certain extent, thereby improving the positional stability of the first transmission shaft 210 and the second transmission shaft 310. This solves the technical problem in the prior art that the coaxiality of the first transmission shaft 210, the second transmission shaft 310 and the shaft system of the dynamometer 1100 of the test bench transmission system 1000 is difficult to meet the standard requirements, and is conducive to improving the accuracy of testing the test object 1200.

[0085] As can be seen from the above structure, the test bench transmission system 1000 of this utility model embodiment, by setting the first connecting plate 220 and the second connecting plate 320, can to a certain extent avoid radial displacement of the first transmission shaft 210 and the second transmission shaft 310, thereby maximizing the coaxiality of the first transmission shaft 210 and the second transmission shaft 310, thereby improving the performance of the test bench transmission system 1000, and enabling the coaxiality of the first transmission shaft 210, the second transmission shaft 310 of the test bench transmission system 1000 and the shaft system of the dynamometer 1100 to meet the standard requirements, further making the bidirectional torque transmission between the dynamometer 1100 and the test object 1200 more stable.

[0086] It is understandable that, compared with the prior art, this application, by setting the first connecting plate 220 and the second connecting plate 320, can to a certain extent avoid radial displacement of the first drive shaft 210 and the second drive shaft 310, and solve the technical problem in the prior art that the coaxiality of the first drive shaft 210 and the second drive shaft 310 of the test bench transmission system 1000 and the shaft system of the dynamometer 1100 is difficult to meet the standard requirements, which is conducive to improving the accuracy of testing the test object 1200.

[0087] In some embodiments, the second drive shaft 310 is a solid steel bar structure, made of 30CrNiMo8v material, and the total length of the second drive shaft 310 is 270mm, which to a certain extent ensures the working performance of the second drive shaft 310.

[0088] In other embodiments, the first drive shaft 210 may also be formed as a solid steel bar structure, made of 30CrNiMo8v material, and the total length of the first drive shaft 210 is 270mm, which to a certain extent ensures the working performance of the first drive shaft 210.

[0089] In some embodiments, combined with Figure 1 and Figure 2As shown, the test bench transmission system 1000 also includes a sensor 1110, which is mounted on the dynamometer 1100 and fixedly connected to the first connecting plate 220. The sensor 1110 can accurately measure the torque output by the test bench transmission system 1000 during operation. By sensing the torque borne by the first drive shaft 210, it can provide basic data for evaluating the power output of the test bench transmission system 1000, thus ensuring the working performance of the test bench transmission system 1000 to a certain extent.

[0090] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4 As shown, the first connecting plate 220 is connected to one axial end of the first drive shaft 210 and is engaged with the dynamometer 1100. This enables the engagement of the first drive shaft 210 and the dynamometer 1100, facilitating the transmission of torque from the first drive shaft 210 to the dynamometer 1100.

[0091] In some embodiments, such as Figure 4 As shown, the test bench transmission system 1000 also includes a first washer 700 and a first bolt 710. The first washer 700 and the first bolt 710 are used to achieve a mating connection between the first connecting plate 220 and the dynamometer 1100. This facilitates the installation of the first connecting plate 220 onto the dynamometer 1100, and at the same time, it can ensure the stability of the connection structure between the first connecting plate 220 and the dynamometer 1100 to a certain extent, so as to realize bidirectional torque transmission between the dynamometer 1100 and the test object 1200.

[0092] In some embodiments, such as Figure 4 As shown, the other axial end of the first drive shaft 210 is fixedly connected to the bearing housing assembly 100 through the first bearing 830, thereby realizing the fixed connection between the first drive shaft 210 and the bearing housing assembly 100 and reducing the difficulty of the mating connection between the first drive shaft 210 and the bearing housing assembly 100.

[0093] In some embodiments, the first bearing 830 is a needle roller bearing.

[0094] In summary, one axial end of the first drive shaft 210 is connected to the dynamometer 1100 via the first connecting plate 220, and the other axial end of the first drive shaft 210 is connected to the bearing housing assembly 100 via the first bearing 830, thereby connecting the first part 200 between the dynamometer 1100 and the bearing housing assembly 100, and using the first connecting plate 220 to limit the radial displacement of the first drive shaft 210.

[0095] In some embodiments, combined with Figure 1 and Figure 2As shown, the second connecting disc 320 is connected to one axial end of the second drive shaft 310 and is mated with the bearing housing assembly 100. This mating connection between the second drive shaft 310 and the bearing housing assembly 100 facilitates the transmission of torque through the second drive shaft 310.

[0096] In some embodiments, combined with Figure 2 , Figure 3 and Figure 7 As shown, the test bench transmission system 1000 also includes a second washer 800, a second bolt 810, a second bearing 820, and a cover plate 840. The cover plate 840 is connected to the test object 1200 via the second bolt 810 and the second washer 800. The other axial end of the second transmission shaft 310 passes through the cover plate 840 and is connected to the test object 1200 via the second bearing 820. This achieves the mating connection between the second transmission shaft 310 and the test object 1200.

[0097] In some embodiments, the second bearing 820 is a needle roller bearing.

[0098] In summary, one axial end of the second drive shaft 310 is connected to the bearing housing assembly 100 via the second connecting disc 320, and the other axial end of the second drive shaft 310 is connected to the test object 1200 via the second bearing 820. This achieves the connection of the second part 300 between the bearing housing assembly 100 and the test object 1200, and the radial displacement of the second drive shaft 310 is restricted by the second connecting disc 320.

[0099] In some embodiments, combined with Figure 9 , Figure 10 and Figure 11 As shown, the first connecting plate 220 and / or the second connecting plate 320 include: a connecting plate body 221 and a limiting structure 222. This can be understood as follows: the first connecting plate 220 includes the connecting plate body 221 and the limiting structure 222; or, the second connecting plate 320 includes the connecting plate body 221 and the limiting structure 222; or, both the first connecting plate 220 and the second connecting plate 320 include the connecting plate body 221 and the limiting structure 222, so as to utilize the first connecting plate 220 to limit the radial displacement of the first drive shaft 210 and the second connecting plate 320 to limit the radial displacement of the second drive shaft 310, reducing the difficulty of limiting the first connecting plate 220 and the second connecting plate 320, thereby improving the positional stability of the first drive shaft 210 and the second drive shaft 310.

[0100] It should be noted that when both the first connecting plate 220 and the second connecting plate 320 include the connecting plate body 221 and the limiting structure 222, the first connecting plate 220 and the second connecting plate 320 can be configured to have the same structure, so that the first connecting plate 220 and the second connecting plate 320 can be processed using the same mold, reducing the molding difficulty of the first connecting plate 220 and the second connecting plate 320, and helping to reduce the manufacturing cost of the test bench transmission system 1000.

[0101] In some embodiments, combined with Figures 4-19 As shown, the connecting plate body 221 connects the dynamometer 1100 and / or the bearing housing assembly 100. The connecting plate body 221 has an assembly channel 2211, into which one axial end of the first drive shaft 210 and / or the second drive shaft 310 can be assembled. This refers to the first connecting plate 220 including the connecting plate body 221 and the limiting structure 222, combined with... Figure 4 , Figure 5 and Figure 11 As shown, the connecting plate body 221 of the first connecting plate 220 is connected to the dynamometer 1100. The connecting plate body 221 of the first connecting plate 220 is provided with an assembly channel 2211. One axial end of the first drive shaft 210 can be assembled in the assembly channel 2211, so as to facilitate the connection between the first drive shaft 210 and the dynamometer 1100 by using the first connecting plate 220, and reduce the difficulty of the connection between the first drive shaft 210 and the dynamometer 1100.

[0102] Accordingly, when the second connecting plate 320 includes the connecting plate body 221 and the limiting structure 222, combined with Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the connecting plate body 221 of the second connecting plate 320 is connected to the bearing housing assembly 100. The connecting plate body 221 of the second connecting plate 320 is provided with an assembly channel 2211. One axial end of the second drive shaft 310 can be assembled in the assembly channel 2211, so as to facilitate the mating connection between the second drive shaft 310 and the bearing housing assembly 100 using the second connecting plate 320, and reduce the difficulty of mating connection between the second drive shaft 310 and the bearing housing assembly 100.

[0103] Meanwhile, by setting up the assembly channel 2211, the first drive shaft 210 and the second drive shaft 310 can reach the predetermined position more accurately during assembly, reducing the adjustment and alignment work during the assembly process, thereby improving the assembly efficiency of the first drive shaft 210 and the second drive shaft 310 with the connecting disc body 221 respectively.

[0104] In some embodiments, combined with Figures 9-19As shown, the limiting structure 222 includes multiple limiting balls 2221. The limiting balls 2221 are disposed on the outer peripheral wall of the assembly channel 2211 and can move radially along the assembly channel 2211. The multiple limiting balls 2221 are arranged at intervals circumferentially along the assembly channel 2211. A limiting recess 211 is provided on the radially outer side of the first drive shaft 210 and / or the second drive shaft 310, and the limiting balls 2221 can be limited and fitted within the limiting recess 211. This refers to the situation where, when the first connecting plate 220 includes the connecting plate body 221 and the limiting structure 222, the combination... Figures 11-16 As shown, the limiting structure 222 of the first connecting plate 220 includes a plurality of limiting balls 2221. The limiting balls 2221 of the first connecting plate 220 are disposed on the outer peripheral wall of the assembly channel 2211 of the first connecting plate 220 and can move radially along the assembly channel 2211. The plurality of limiting balls 2221 are arranged at intervals circumferentially along the assembly channel 2211 of the first connecting plate 220. A limiting recess 211 is provided on the radially outer side of the first drive shaft 210, which is combined with Figure 14 , Figure 15 and Figure 16 As shown, the limiting ball 2221 of the first connecting plate 220 can be limited and fitted in the limiting recess 211 of the first drive shaft 210 to realize the limiting fit between the first connecting plate 220 and the first drive shaft 210, thereby facilitating the use of the first connecting plate 220 to limit the radial position of the first drive shaft 210 and improving the positional stability of the first drive shaft 210.

[0105] Accordingly, when the second connecting plate 320 includes the connecting plate body 221 and the limiting structure 222, combined with Figures 17-19 As shown, the limiting structure 222 of the second connecting plate 320 includes a plurality of limiting balls 2221. The limiting balls 2221 of the second connecting plate 320 are disposed on the outer peripheral wall of the assembly channel 2211 of the second connecting plate 320 and can move radially along the assembly channel 2211. The plurality of limiting balls 2221 are arranged at intervals circumferentially along the assembly channel 2211 of the second connecting plate 320. A limiting recess 211 is provided on the radially outer side of the second drive shaft 310, which is combined with Figure 18 and Figure 19 As shown, the limiting ball 2221 of the second connecting plate 320 can be limited and fitted in the limiting recess 211 of the second drive shaft 310 to realize the limiting fit between the second connecting plate 320 and the second drive shaft 310, thereby facilitating the use of the second connecting plate 320 to limit the radial position of the second drive shaft 310 and improve the positional stability of the second drive shaft 310.

[0106] It should be noted that by setting multiple limiting balls 2221 and arranging them at circumferential intervals along the assembly channel 2211, when one axial end of the first drive shaft 210 and / or the second drive shaft 310 is assembled within the assembly channel 2211, the multiple limiting balls 2221 are arranged at intervals on the radial outer side of the first drive shaft 210 and / or the second drive shaft 310. This provides multiple radial positioning points for the radial positioning of the first drive shaft 210 and / or the second drive shaft 310, thereby improving the radial positioning efficiency of the first drive shaft 210 and / or the second drive shaft 310. The accuracy of radial positioning of the drive shaft 310 is improved. At the same time, by setting limiting recesses 211 on the radially outer side of the first drive shaft 210 and / or the second drive shaft 310 corresponding to multiple limiting balls 2221, the limiting balls 2221 and the limiting recesses 211 are matched to limit the positioning, thereby realizing the positioning and locking of the first drive shaft 210 and / or the second drive shaft 310, improving the positional stability of the first drive shaft 210 and / or the second drive shaft 310, thereby improving the working stability of the test bench transmission system 1000, and enabling the test bench transmission system 1000 to stably transmit bidirectional torque.

[0107] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0108] In some embodiments, combined with Figure 10 , Figure 11 and Figure 20 As shown, the limiting structure 222 also includes multiple support seats 2224, each of which corresponds to a multiple limiting ball 2221. The limiting ball 2221 is movably disposed on the support seat 2224. The support seat 2224 can provide support for the limiting ball 2221, ensuring the working stability of the limiting ball 2221 to a certain extent.

[0109] In some embodiments, combined with Figures 10-19 As shown, the limiting structure 222 also includes a sliding sleeve 2222 and a reset member 2223. The sliding sleeve 2222 is fitted around the outer periphery of the assembly channel 2211 and faces the limiting ball 2221. The inner peripheral wall of the sliding sleeve 2222 is provided with a mating recess 22221 to avoid the limiting ball 2221. At least part of the limiting ball 2221 can move into the mating recess 22221 (for a detailed illustration of at least part of the limiting ball 2221 being located in the mating recess 22221, please refer to...). Figure 13 , Figure 14 , Figure 18 and Figure 19It should be noted that when at least part of the limiting ball 2221 moves into the mating recess 22221, it can prevent the limiting ball 2221 from occupying too much space in the assembly channel 2211 to a certain extent, so that one axial end of the first drive shaft 210 and / or the second drive shaft 310 can be effectively assembled into the assembly channel 2211, reducing the assembly difficulty of the first drive shaft 210 and the first connecting plate 220 and the second drive shaft 310 and the second connecting plate 320.

[0110] Optionally, the reset member 2223 is used to drive the sliding sleeve 2222 to move away from the connecting plate body 221, so that the inner peripheral wall of the sliding sleeve 2222 without the mating recess 22221 abuts against the limiting ball 2221 (connection). Figures 15-17 (As shown). At this time, the limiting ball 2221 can be fixed by the sliding sleeve 2222, so that the limiting ball 2221 can be effectively limited and fitted in the limiting recess 211, thereby realizing the limiting fit between the first drive shaft 210 and the first connecting plate 220 and the second drive shaft 310 and the second connecting plate 320.

[0111] In a specific example, the reset element 2223 is a reset spring. The reset spring simplifies the structure of the reset element 2223 and reduces the molding difficulty of the reset element 2223, while also enabling the sliding sleeve 2222 to move effectively away from the connecting disk body 221.

[0112] Of course, in other embodiments, the reset element 2223 may also be other elastic elements (such as rubber gaskets, rubber diaphragms, or polyurethane elastic elements, etc.), and this application does not limit it.

[0113] With the above settings, in a specific example, when it is necessary to use the first connecting plate 220 to limit the axial displacement of the first drive shaft 210, the sliding sleeve 2222 can be manually moved towards the connecting plate body 221 so that the mating recess 22221 on the sliding sleeve 2222 is aligned with the limiting ball 2221. Then, one axial end of the first drive shaft 210 is inserted into the assembly channel 2211. At this time, under the drive of the first drive shaft 210, at least part of the limiting ball 2221 can move into the mating recess 22221 (e.g., Figure 12 , Figure 13 and Figure 14 As shown), so that the first drive shaft 210 can be effectively inserted into the assembly channel 2211. After the first drive shaft 210 is assembled, the sliding sleeve 2222 is released. At this time, the sliding sleeve 2222 moves away from the connecting plate body 221 under the drive of the reset member 2223, so that the inner peripheral wall of the sliding sleeve 2222, which does not have a mating recess 22221, is abutted against the limiting ball 2221, and ensures that the limiting ball 2221 of the first connecting plate 220 can be limited and fitted in the limiting recess 211 of the first drive shaft 210 (as shown). Figure 15 and Figure 16 As shown, the first connecting plate 220 and the first drive shaft 210 are positioned to limit each other, thereby making it easier to use the first connecting plate 220 to limit the radial position of the first drive shaft 210 and improve the positional stability of the first drive shaft 210.

[0114] It should be noted that when the second connecting plate 320 is needed to limit the axial displacement of the second drive shaft 310, the specific assembly method of the second connecting plate 320 and the second drive shaft 310 can be referred to the specific assembly method of the first connecting plate 220 and the first drive shaft 210, which will not be repeated here.

[0115] In some embodiments, combined with Figure 10 , Figure 13 and Figure 18 As shown, a first mating spline 22111 is provided on the inner peripheral wall of the assembly channel 2211, and a second mating spline 212 is provided on the outer peripheral wall of one axial end of the first drive shaft 210 and / or the second drive shaft 310. The first mating spline 22111 and the second mating spline 212 are mated and connected. The specific structure of the first mating spline 22111 on the first connecting disc 220 can also be found in [reference needed]. Figure 21 and Figure 22 The specific structure of the first mating spline 22111 on the second connecting plate 320 can also be found in [reference needed]. Figure 23 and Figure 24 The above-mentioned arrangement facilitates the connection between the first drive shaft 210 and the first connecting plate 220, as well as the second drive shaft 310 and the second connecting plate 320, and helps to ensure the reliability of the connection between the first drive shaft 210 and the first connecting plate 220, as well as the second drive shaft 310 and the second connecting plate 320, and reduces the connection difficulty.

[0116] In some embodiments, the first mating spline 22111 on the first drive shaft 210 and / or the second drive shaft 310 is an involute spline with a module of 1.25, a number of teeth of 29, and a pressure angle of 30°.

[0117] In some embodiments, combined with Figure 13 and Figure 16 As shown, the test bench transmission system 1000 also includes a limiting elastic element 400. The limiting elastic element 400 is disposed within the assembly channel 2211 and engages with the end face of the first transmission shaft 210 or the second transmission shaft 310. The limiting elastic element 400 is used to limit the axial displacement of the first transmission shaft 210 or the second transmission shaft 310. This further improves the positional stability of the first transmission shaft 210 and the second transmission shaft 310, ensuring the working performance of the first transmission shaft 210 and the second transmission shaft 310.

[0118] Meanwhile, the limiting elastic element 400 can also be used to buffer and absorb the external impact force of the test bench transmission system 1000 on the first transmission shaft 210 or the second transmission shaft 310, which can, to a certain extent, prevent the first transmission shaft 210 or the second transmission shaft 310 from breaking and extend the service life of the first transmission shaft 210 and the second transmission shaft 310.

[0119] In the specific example, the limiting elastic element 400 is a spring.

[0120] Of course, in other embodiments, the limiting elastic element 400 may also be other elastic elements (such as rubber gaskets, rubber diaphragms, or polyurethane elastic elements, etc.), and this application does not limit it here.

[0121] In specific examples, combined Figure 4 , Figure 5 , Figure 25 and Figure 26 As shown, both ends of the first drive shaft 210 are provided with second mating splines 212. The second mating splines 212 on both ends of the first drive shaft 210 are formed as external splines. One end of the first drive shaft 210 is fixedly connected to the first connecting disc 220 through the second mating splines 212, and the other end of the first drive shaft 210 is fixedly connected to the bearing housing assembly 100 through the second mating splines 212, so as to connect the first part 200 between the dynamometer 1100 and the bearing housing assembly 100.

[0122] In this case, the axial connection between one end of the first drive shaft 210 and the first connecting disc 220 via the second mating spline 212, and the axial connection between the other end of the first drive shaft 210 and the bearing housing assembly 100 via the second mating spline 212, can both be formed as clearance fits to reduce the connection difficulty.

[0123] In specific examples, combined Figure 2 , Figure 7 , Figure 27 and Figure 28 As shown, one axial end of the second drive shaft 310 is provided with a second mating spline 212, which is formed as an external spline. The other axial end of the second drive shaft 310 is provided with a third mating spline 311, which is formed as an internal spline. One axial end of the second drive shaft 310 is fixedly connected to the bearing housing assembly 100 through the second mating spline 212, and the other axial end of the second drive shaft 310 is fixedly connected to the test object 1200 through the third mating spline 311, so as to connect the second part 300 between the test object 1200 and the bearing housing assembly 100.

[0124] In some embodiments, combined with Figure 7 , Figure 29 , Figure 30 and Figure 31 As shown, the test bench transmission system 1000 also includes a positioning bearing sleeve 850. The test object 1200 includes a splined shaft 1210. The cover plate 840 is connected to the test object 1200 through the positioning bearing sleeve 850. The splined shaft 1210 is provided with an external spline. The other axial end of the second transmission shaft 310 passes through the cover plate 840 and the positioning bearing sleeve 850 and is sleeved on the outer circumference of the splined shaft 1210, so as to realize the mating connection between the third mating spline 311 and the external spline on the splined shaft 1210, thereby realizing the connection between the second part 300 and the test object 1200, reducing the difficulty of the mating connection between the test bench transmission system 1000 and the test object 1200.

[0125] In some embodiments, the cover plate 840 is a bearing sealing component.

[0126] In some embodiments, combined with Figure 2 and Figure 32 As shown, the bearing housing assembly 100 includes a support base 110 and a bearing housing body 120. The support base 110 is provided with a mounting groove 111. In the radial direction of the mounting groove 111, the mounting groove 111 has a first support surface (not shown) and a second support surface 1111. In the direction facing the opening of the mounting groove 111, the first support surface and the second support surface 1111 extend inclined away from each other. This makes the mounting groove 111 form a V-shaped groove, which not only facilitates the use of the support base 110 to provide stable support for the bearing housing body 120 and ensures the working stability of the bearing housing body 120, but also reduces the molding difficulty of the mounting groove 111.

[0127] In some embodiments, combined with Figure 2 , Figure 32 and Figure 33 As shown, at least a portion of the bearing housing body 120 is disposed within the mounting groove 111. The outer periphery of the bearing housing body 120 is provided with a first mating surface 121 that abuts against the first support surface and a second mating surface 122 that abuts against the second support surface 1111. By disposing at least a portion of the bearing housing body 120 within the mounting groove 111, the bearing housing body 120 is supported by the support base 110, improving the positional stability of the bearing housing body 120. This allows the bearing housing body 120 to provide stable support for the first drive shaft 210 and the second drive shaft 310, thereby preventing the first drive shaft 210 and the second drive shaft 310 from shaking to a certain extent, and thus improving the working stability of the first drive shaft 210 and the second drive shaft 310.

[0128] Meanwhile, by providing a first mating surface 121 that abuts against the first support surface and a second mating surface 122 that abuts against the second support surface 1111 on the outer periphery of the bearing housing body 120, not only can the shaking of the bearing housing body 120 be effectively prevented, thereby improving the stability of the bearing housing body 120, but it is also beneficial to the vibration reduction of the shaft system and improves the working performance of the test bench transmission system 1000.

[0129] In specific examples, combined Figure 2 , Figure 32 and Figure 33 As shown, the two opposite sides of the bearing housing body 120 have a V-shaped structure so that the outer side of the bearing housing body 120 matches the shape of the mounting groove 111, thereby facilitating the stable support of the bearing housing body 120 by the support base 110.

[0130] Optionally, the bearing housing body 120 is cast from QT400-10 material, and the bearing housing body 120 is machined into a V-shaped structure, which to a certain extent has the effect of vibration reduction on the test bench transmission system 1000, avoiding vibration from damaging the test bench transmission system 1000, thereby maximizing the service life of the test bench transmission system 1000.

[0131] In some embodiments, combined with Figure 2 and Figure 34 As shown, the test bench transmission system 1000 also includes a fourth bolt 930, a fifth washer 940, a sixth washer 950, and a first pin 960. The fourth bolt 930, the fifth washer 940, the sixth washer 950, and the first pin 960 cooperate to realize the mating connection between the bearing housing body 120 and the support base 110, thereby realizing the stable connection of the bearing housing body 120 to the support base 110. While reducing the connection difficulty between the bearing housing body 120 and the support base 110, it can also improve the connection quality between the bearing housing body 120 and the support base 110.

[0132] With the above configuration, during the specific connection process between the bearing housing body 120 and the support base 110, the first pin 960 can be used to position the bearing housing body 120 and the support base 110 first, so as to facilitate the positioning and matching of the bearing housing body 120 and the support base 110. After the bearing housing body 120 and the support base 110 are positioned, the fourth bolt 930, the fifth washer 940 and the sixth washer 950 are used to achieve the fixed connection of the bearing housing body 120 and the support base 110, thereby reducing the connection difficulty of the bearing housing body 120 and the support base 110 and improving the connection quality of the bearing housing body 120 and the support base 110.

[0133] Meanwhile, by using the fourth bolt 930 to achieve a fixed connection between the bearing housing body 120 and the support base 110, a detachable connection between the bearing housing body 120 and the support base 110 can also be achieved, so as to facilitate the disassembly and replacement of the bearing housing body 120 and the support base 110.

[0134] In some embodiments, the fourth bolt 930, the fifth washer 940, the sixth washer 950, and the first pin 960 are all multiple, which helps to increase the connection strength between the bearing housing body 120 and the support base 110.

[0135] In the description of this utility model, the features defined as "first", "second", "third", "fourth", "fifth" and "sixth" may explicitly or implicitly include one or more of the features, used to distinguish the descriptive features, without any order or importance.

[0136] In some embodiments, combined with Figure 1 and Figure 35 As shown, the bearing housing assembly 100 also includes a flexible coupling 130 and a connecting plate 140. The flexible coupling 130 is connected to the end of the bearing housing body 120 facing the second part 300, and the second connecting plate 320 is connected to the flexible coupling 130. While connecting the second connecting plate 320 to the bearing housing body 120, the flexible coupling 130 can also, to a certain extent, prevent vibration of the second connecting plate 320 during operation of the test bench transmission system 1000, achieving vibration reduction. This results in good vibration reduction of the test bench transmission system 1000 and improves its working performance.

[0137] In some embodiments, combined with Figure 36 , Figure 37 and Figure 38 As shown, the bearing housing assembly 100 also includes a plurality of sixth bolts 860. The second connecting plate 320 is connected to the flexible coupling 130 through the plurality of sixth bolts 860. This reduces the difficulty of connecting the second connecting plate 320 and the flexible coupling 130, while also ensuring the connection quality between the second connecting plate 320 and the flexible coupling 130.

[0138] Optionally, combined Figure 1 , Figure 34 and Figure 35As shown, the connecting plate 140 is connected between the flexible coupling 130 and the bearing housing body 120. This facilitates a secure connection between the flexible coupling 130 and the bearing housing body 120, ensuring that there is no relative displacement or loosening between them during the operation of the test bench transmission system 1000. This, to a certain extent, guarantees the working performance of the flexible coupling 130 and reduces the difficulty of connecting the flexible coupling 130 and the bearing housing body 120.

[0139] Meanwhile, the connecting plate 140 can provide additional support points for the bearing housing body 120 and the second connecting plate 320, enhancing the stability of the entire test bench transmission system 1000. Especially when subjected to large radial or axial loads, the connecting plate 140 can help distribute the load and reduce the pressure borne by the bearing housing body 120 and the second connecting plate 320 alone, which can, to a certain extent, prevent the bearing housing body 120 and the second connecting plate 320 from deforming or being damaged.

[0140] In some embodiments, one end of the connecting plate 140 is connected to the bearing housing body 120 via a mating structure 500 (the specific structure of the mating structure 500 can be found in [reference]). Figures 39-46 The other end of the connecting plate 140 is connected to the flexible coupling 130 via a transition structure 600 (for details of the transition structure 600, please refer to...). Figures 47-50 This facilitates the use of the connecting plate 140 to achieve a mating connection between the flexible coupling 130 and the bearing housing body 120, reducing the difficulty of mating the flexible coupling 130 and the bearing housing body 120.

[0141] In some embodiments, such as Figure 34 As shown, the test bench transmission system 1000 also includes a fourth washer 920 and a fourth bolt 930. The fourth washer 920 and the fourth bolt 930 are used to connect the flexible coupling 130 to the connecting plate 140 to further realize the mating connection between the connecting plate 140 and the flexible coupling 130 and increase the connection strength between the connecting plate 140 and the flexible coupling 130.

[0142] In some embodiments, such as Figure 42 As shown, the test bench transmission system 1000 also includes a third washer 900 and a third bolt 910. The third washer 900 and the third bolt 910 are used to connect the connecting plate 140 to the bearing housing body 120, so as to further realize the mating connection between the connecting plate 140 and the bearing housing body 120 and increase the connection strength between the connecting plate 140 and the bearing housing body 120.

[0143] In some embodiments, the tightening force Fva of each third bolt 910 is 45N to 50N.

[0144] In some embodiments, such as Figure 42 As shown, the test bench transmission system 1000 also includes a connecting pad 160, which is disposed between the connecting plate 140 and the bearing housing body 120 to increase the connection strength between the connecting plate 140 and the bearing housing body 120.

[0145] In some embodiments, combined with Figures 39-43 As shown, the mating structure 500 includes a first mating tooth 510 and a second mating tooth 520. The first mating tooth 510 is located at one end of the bearing housing body 120 facing the connecting plate 140 (see [reference needed] for details). Figure 42 The second mating tooth 520 is located on the connecting plate 140 and is directly opposite the first mating tooth 510 (see details for specific structure). Figure 42 and Figure 43 The first mating tooth 510 and the second mating tooth 520 mesh to achieve the mating connection between the connecting plate 140 and the bearing housing body 120. This not only reduces the difficulty of mating the connecting plate 140 and the bearing housing body 120, but also makes the connection between the connecting plate 140 and the bearing housing body 120 more stable. This ensures that the connecting plate 140 and the bearing housing body 120 maintain a relatively fixed positional relationship during the operation of the test bench transmission system 1000, improving the stability of the connection between the connecting plate 140 and the bearing housing body 120, and also ensuring the transmission of torque.

[0146] It should be noted that by setting the first mating tooth 510 on the bearing housing body 120 and facing the second mating tooth 520, and setting the second mating tooth 520 on the connecting plate 140 and facing the first mating tooth 510, the precise meshing of the second mating tooth 520 and the first mating tooth 510 can be guaranteed to a certain extent. This allows for the accurate determination of the relative position between the connecting plate 140 and the bearing housing body 120, thereby ensuring the precise positioning of the connecting plate 140 and the bearing housing body 120.

[0147] Optionally, the first mating tooth 510 and the second mating tooth 520 can be helical teeth. Helical teeth have advantages such as large torque transmission, high coaxiality accuracy and good vibration reduction effect, which can improve the performance of the test bench transmission system 1000 to a certain extent.

[0148] In some embodiments, combined with Figure 42 as well as Figures 44-46 As shown, the bearing housing assembly 100 also includes a bearing spindle 150. The first mating tooth 510 is disposed on the bearing housing body 120 and faces the second mating tooth 520. This facilitates the meshing of the first mating tooth 510 and the second mating tooth 520, while also reducing the molding difficulty of the first mating tooth 510.

[0149] In some embodiments, during the specific assembly of the bearing housing assembly 100, the first mating tooth 510 can be machined on the bearing spindle 150 first, and then the bearing spindle 150 can be installed on the bearing housing body 120 to reduce the forming difficulty of the first mating tooth 510.

[0150] In some embodiments, the axial transmission force T of the bearing spindle 150 is 5KN to 6KN.

[0151] In some embodiments, the large and small ends of the first mating tooth 510 and the second mating tooth 520 are equilateral triangular arc surface structures with a tooth length L = 21.5 mm; the side length of the equilateral triangle at the large end tooth end is Ld = 10 mm; and the side length of the equilateral triangle at the small end tooth end is Lx = 4.6 mm.

[0152] In some embodiments, the repeatability of the first mating tooth 510 and the second mating tooth 520 is 100%, and the tooth surface meshing clearance is 0 mm to 0.015 mm.

[0153] In some embodiments, combined with Figures 47-50 As shown, the adapter structure 600 includes a transmission bearing 610, an adapter sleeve 620, and a fastening nut 630. The other end of the connecting plate 140 is provided with a mating shaft 640 (the specific structure of the mating shaft 640 can be found in [reference]). Figure 48 The adapter sleeve 620 is rotatably fitted onto the outer circumference of the mating shaft 640 via the transmission bearing 610. One end of the fastening nut 630 passes through the adapter sleeve 620 and is fixedly connected to the mating shaft 640, while the other end of the fastening nut 630 is sealed to the adapter sleeve 620. The flexible coupling 130 is fitted onto the outer circumference of the adapter sleeve 620 and is fixedly connected to the connecting plate 140. This achieves the mating connection between the connecting plate 140 and the flexible coupling 130, ensuring their relative positions to a certain extent and thus guaranteeing their precise positioning.

[0154] Meanwhile, by using the transmission bearing 610 to rotatably mount the adapter sleeve 620 on the outer circumference of the mating shaft 640, the adapter sleeve 620 can rotate independently and freely.

[0155] In some embodiments, combined with Figure 48 and Figure 49 As shown, the mating shaft 640 is hollow inside, and one end of the fastening sleeve 630 is located inside the mating shaft 640. This facilitates the fixed connection between the fastening sleeve 630 and the mating shaft 640, reducing the difficulty of fixing the fastening sleeve 630 and the mating shaft 640 together.

[0156] In some embodiments, combined with Figure 48 and Figure 49As shown, there are two transmission bearings 610, and a retaining ring 650 is provided between the two transmission bearings 610. The two transmission bearings 610 cooperate to enable the adapter sleeve 620 to rotate effectively relative to the mating shaft 640.

[0157] In some embodiments, combined with Figure 49 and Figure 50 As shown, one end of the adapter sleeve 620 is provided with a first sealing groove 621, and at least part of the fastening screw sleeve 630 is assembled in the first sealing groove 621. One end of the fastening screw sleeve 630 is provided with a second sealing groove 631, and at least part of the adapter sleeve 620 is assembled in the second sealing groove 631, so as to achieve a sealed connection between the fastening screw sleeve 630 and the adapter sleeve 620, which can ensure the sealing performance of the adapter structure 600 to a certain extent.

[0158] It should be noted that the cooperation of the first sealing groove 621 and the second sealing groove 631 can form an S-shaped end face sealing structure at the end of the transition structure 600. During the operation of the test bench transmission system 1000, due to the influence of factors such as temperature changes and vibration, components such as the fastening sleeve 630 and the transmission bearing 610 may undergo a certain degree of deformation. The S-shaped end face sealing structure has good flexibility and adaptability, and can maintain a good sealing state even when the fastening sleeve 630 and the transmission bearing 610 undergo slight deformation. It will not cause sealing failure due to deformation, thus ensuring the performance of the transition structure 600 to a certain extent.

[0159] In some embodiments, combined with Figure 34 , Figure 35 and Figure 51 As shown, in the radial direction of the flexible coupling 130, the flexible coupling 130 has an internal connecting member 131, an adapter member 132, and a housing 133 that are sequentially sleeved and connected, with the adapter member 132 forming an elastic element. This gives the flexible coupling 130 a certain degree of elasticity, ensuring the working performance of the flexible coupling 130, facilitating vibration reduction using the flexible coupling 130, resulting in good vibration reduction effect of the test bench transmission system 1000, and thus improving the working performance of the test bench transmission system 1000.

[0160] Meanwhile, by setting the internal connecting part 131 and the outer shell 133, problems such as loosening or displacement of the flexible coupling 130 during installation and use can be avoided to a certain extent, thereby ensuring the structural stability of the flexible coupling 130 when rotating at high speed and bearing various loads.

[0161] In some embodiments, the internal connector 131 can be understood as an internal hub.

[0162] Optionally, the adapter 132 is connected to the internal connector 131 and the housing 133 using a vulcanization process. This not only improves the production efficiency of the flexible coupling 130, but also enhances the durability and service life of the adapter 132, thereby extending the service life of the flexible coupling 130.

[0163] In some embodiments, the vibration of the dynamometer 1100 and the bearing housing assembly 100 is dynamically balanced according to standard ISO 10816-3, B / C (Zone boundary), max 4.5 mm / s, and according to G2.5, standard ISO 1940 "Balance mass of rotor rigid body".

[0164] In summary, the main function of the test bench transmission system 1000 in this application is to realize bidirectional torque transmission (dynamometer and reverse drive) and meet the standard requirements for vibration and dynamic balance of the transmission shaft system. This ensures high coaxiality accuracy between the drive shafts (first transmission shaft 210 and second transmission shaft 310) of the test bench transmission system 1000 and the dynamometer shaft system, and ensures that the vibration of the dynamometer 1100 and the bearing housing assembly 100 meets the standard requirements. At the same time, it significantly improves the reliability of the first transmission shaft 210 and the second transmission shaft 310, and to a certain extent guarantees the working performance of the test bench transmission system 1000.

[0165] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0166] Other components of the test bench transmission system 1000 according to the present invention, such as the dynamometer 1100 and the test object 1200, are known to those skilled in the art and will not be described in detail here.

[0167] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0168] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A test bench transmission system, characterized in that, include: A bearing housing assembly (100) adapted to be disposed between a dynamometer (1100) and a test object (1200); The first part (200) is connected between the dynamometer (1100) and the bearing housing assembly (100) and includes a first drive shaft (210) and a first connecting plate (220). The first drive shaft (210) and the first connecting plate (220) are connected in a cooperating manner, and the first connecting plate (220) is used to limit the radial displacement of the first drive shaft (210). The second part (300) is connected between the test object (1200) and the bearing housing assembly (100) and includes a second drive shaft (310) and a second connecting disc (320), the second drive shaft (310) and the second connecting disc (320) being connected in a mating manner, the second connecting disc (320) being used to limit the radial displacement of the second drive shaft (310).

2. The test bench transmission system according to claim 1, characterized in that, The first connecting plate (220) is connected to one axial end of the first transmission shaft (210) and is connected in cooperation with the dynamometer (1100); The second connecting disc (320) is connected to one axial end of the second drive shaft (310) and is connected to the bearing housing assembly (100).

3. The test bench transmission system according to claim 2, characterized in that, The first connecting plate (220) and / or the second connecting plate (320) include: A connecting plate body (221) is provided, which connects the dynamometer (1100) and / or the bearing housing assembly (100). The connecting plate body (221) is provided with an assembly channel (2211), and one axial end of the first drive shaft (210) and / or the second drive shaft (310) can be assembled in the assembly channel (2211). A limiting structure (222) includes a plurality of limiting balls (2221). The limiting balls (2221) are disposed on the outer peripheral wall of the assembly channel (2211) and can move radially along the assembly channel (2211). The plurality of limiting balls (2221) are arranged circumferentially at intervals along the assembly channel (2211). A limiting recess (211) is provided on the radial outer side of the first drive shaft (210) and / or the second drive shaft (310). The limiting balls (2221) can be limited and fitted within the limiting recess (211).

4. The test bench transmission system according to claim 3, characterized in that, The limiting structure (222) also includes: A sliding sleeve (2222) is fitted around the outer periphery of the assembly channel (2211) and faces the limiting ball (2221). The inner peripheral wall of the sliding sleeve (2222) is provided with a mating recess (22221) to avoid the limiting ball (2221). At least part of the limiting ball (2221) can move into the mating recess (22221). A reset member (2223) is used to drive the sliding sleeve (2222) to move away from the connecting disc body (221) so that the inner peripheral wall of the sliding sleeve (2222) without the mating recess (22221) is mated with the limiting ball (2221).

5. The test bench transmission system according to claim 3, characterized in that, The inner peripheral wall of the assembly channel (2211) is provided with a first mating spline (22111), and the outer peripheral wall of one axial end of the first drive shaft (210) and / or the second drive shaft (310) is provided with a second mating spline (212). The first mating spline (22111) and the second mating spline (212) are mated and connected.

6. The test bench transmission system according to claim 3, characterized in that, It also includes a limiting elastic element (400), which is disposed in the assembly channel (2211) and abuts against the end face of the first drive shaft (210) or the second drive shaft (310). The limiting elastic element (400) is used to limit the axial displacement of the first drive shaft (210) or the second drive shaft (310).

7. The test bench transmission system according to any one of claims 1-6, characterized in that, The bearing housing assembly (100) includes: A support base (110) is provided with a mounting groove (111). In the radial direction of the mounting groove (111), the mounting groove (111) has a first support surface and a second support surface (1111). In the direction toward the opening of the mounting groove (111), the first support surface and the second support surface (1111) extend obliquely away from each other. The bearing housing body (120) is at least partially disposed in the mounting groove (111). The outer periphery of the bearing housing body (120) is provided with a first mating surface (121) that abuts against the first support surface and a second mating surface (122) that abuts against the second support surface (1111).

8. The test bench transmission system according to claim 7, characterized in that, The bearing housing assembly (100) also includes: A flexible coupling (130) is connected to one end of the bearing housing body (120) facing the second part (300), and the second connecting disc (320) is engaged with the flexible coupling (130). A connecting plate (140) is connected between the flexible coupling (130) and the bearing housing body (120).

9. The test bench transmission system according to claim 8, characterized in that, One end of the connecting plate (140) is connected to the bearing housing body (120) through a mating structure (500), and the other end of the connecting plate (140) is connected to the flexible coupling (130) through a transition structure (600). The docking structure (500) includes a first mating tooth (510) and a second mating tooth (520). The first mating tooth (510) is located at one end of the bearing housing body (120) facing the connecting plate (140), and the second mating tooth (520) is located on the connecting plate (140) and directly opposite the first mating tooth (510). The first mating tooth (510) and the second mating tooth (520) mesh to achieve the mating connection between the connecting plate (140) and the bearing housing body (120). The adapter structure (600) includes a transmission bearing (610), an adapter sleeve (620), and a fastening nut (630). The other end of the connecting plate (140) is provided with a mating shaft (640). The adapter sleeve (620) is rotatably sleeved on the outer circumference of the mating shaft (640) through the transmission bearing (610). One end of the fastening nut (630) passes through the adapter sleeve (620) and is fixedly connected to the mating shaft (640). The other end of the fastening nut (630) is sealed to the adapter sleeve (620). The flexible coupling (130) is sleeved on the outer circumference of the adapter sleeve (620) and fixedly connected to the connecting plate (140).

10. The test bench transmission system according to claim 8, characterized in that, In the radial direction of the flexible coupling (130), the flexible coupling (130) has an internal connecting member (131), an adapter (132) and a housing (133) that are sequentially sleeved and connected, and the adapter (132) is formed as an elastic element.

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