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CN-224216300-U - Test bench transmission system

CN224216300UCN 224216300 UCN224216300 UCN 224216300UCN-224216300-U

Abstract

The utility model discloses a test bench transmission system, which comprises a bearing seat assembly, a first part and a second part, wherein 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, 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 connected with the second connecting disc in a matched manner, and the second connecting disc is used for limiting the radial displacement of the second transmission shaft. The test bench transmission system provided by the embodiment of the utility model is beneficial to ensuring the coaxiality of the first transmission shaft, the second transmission shaft and the shaft system of the dynamometer, 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.

Inventors

  • XIONG QUANGEN
  • GUO ZHISHENG
  • LI GENG
  • WANG WEI

Assignees

  • 北汽福田汽车股份有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (10)

  1. 1. A test bench drive system, comprising: A bearing block assembly (100), the bearing block assembly (100) being adapted to be disposed between a dynamometer (1100) and a test object (1200); -a first part (200), the first part (200) being connected between the dynamometer (1100) and the bearing block assembly (100) and comprising a first transmission shaft (210) and a first connection disc (220), the first transmission shaft (210) and the first connection disc (220) being cooperatively connected, the first connection disc (220) being adapted to limit radial displacement of the first transmission shaft (210); -a second part (300), the second part (300) being connected between the test object (1200) and the bearing housing assembly (100) and comprising a second transmission shaft (310) and a second connection disc (320), the second transmission shaft (310) and the second connection disc (320) being cooperatively connected, the second connection disc (320) being adapted to limit a radial displacement of the second transmission shaft (310).
  2. 2. The test bench drive system of claim 1, wherein said first connection plate (220) is connected at one axial end of said first drive shaft (210) and is cooperatively connected with said dynamometer (1100); The second connecting disc (320) is connected to one axial end of the second transmission shaft (310) and is connected with the bearing seat assembly (100) in a matching mode.
  3. 3. The test bench drive system of claim 2, wherein the first connection plate (220) and/or the second connection plate (320) comprises: The connecting disc main body (221), the connecting disc main body (221) is connected with the dynamometer (1100) and/or the bearing seat assembly (100), an assembly channel (2211) is arranged on the connecting disc main body (221), and one axial end of the first transmission shaft (210) and/or the second transmission shaft (310) can be assembled in the assembly channel (2211); Limit structure (222), limit structure (222) include a plurality of spacing balls (2221), spacing ball (2221) are located on the periphery wall of assembly passageway (2211) and can follow radial movement of assembly passageway (2211), a plurality of spacing balls (2221) are followed the circumference interval arrangement of assembly passageway (2211), first transmission shaft (210) and/or the radial outside of second transmission shaft (310) is equipped with spacing concave part (211), spacing ball (2221) can spacing fit be in spacing concave part (211).
  4. 4. A test bench drive system according to claim 3, characterized in that said limit structure (222) further comprises: The sliding sleeve (2222) is sleeved on the periphery of the assembly channel (2211) and is opposite to the limiting ball (2221), a matching concave part (22221) for avoiding the limiting ball (2221) is formed in the inner peripheral wall of the sliding sleeve (2222), and at least part of the limiting ball (2221) can move into the matching concave part (22221); And a reset piece (2223), wherein the reset piece (2223) is used for driving the sliding sleeve (2222) to move towards a direction far away from the connecting disc main body (221), so that the inner peripheral wall of the sliding sleeve (2222) which is not provided with the matching concave part (22221) is in stop matching with the limit ball (2221).
  5. 5. A test bench transmission system according to claim 3, characterized in that a first mating spline (22111) is provided on an inner peripheral wall of the assembly passage (2211), a second mating spline (212) is provided on an outer peripheral wall of an axial end of the first transmission shaft (210) and/or the second transmission shaft (310), and the first mating spline (22111) is in mating connection with the second mating spline (212).
  6. 6. A test bench drive system according to claim 3, further comprising a limiting elastic member (400), said limiting elastic member (400) being disposed in said assembly passage (2211) and being in stop-fit with an end face of said first drive shaft (210) or said second drive shaft (310), said limiting elastic member (400) being adapted to limit axial displacement of said first drive shaft (210) or said second drive shaft (310).
  7. 7. The test bench drive system of any of claims 1-6, wherein said bearing housing assembly (100) comprises: -a support base (110), the support base (110) being provided with a mounting groove (111), the mounting groove (111) having a first support surface and a second support surface (1111) in a radial direction of the mounting groove (111), the first support surface and the second support surface (1111) extending obliquely in a direction away from each other in a notch direction towards the mounting groove (111); The bearing seat main body (120), at least part bearing seat main body (120) are located in mounting groove (111), the periphery of bearing seat main body (120) is equipped with first supporting surface stop fit's first mating surface (121) and with second supporting surface (1111) stop fit's second mating surface (122).
  8. 8. The test bench drive system of claim 7, wherein said bearing housing assembly (100) further comprises: An elastic coupling (130), wherein the elastic coupling (130) is connected to one end of the bearing seat main body (120) facing the second part (300), and the second connecting disc (320) is connected with the elastic coupling (130) in a matching way; and a connecting plate (140), wherein the connecting plate (140) is connected between the elastic coupling (130) and the bearing seat main body (120).
  9. 9. The test bench transmission system according to claim 8, wherein one end of the connection plate (140) is cooperatively connected with the bearing seat main body (120) through a docking structure (500), and the other end of the connection plate (140) is cooperatively connected with the elastic coupling (130) through a switching structure (600); The butt joint structure (500) comprises a first matching tooth (510) and a second matching tooth (520), the first matching tooth (510) is arranged at one end of the bearing seat main body (120) facing the connecting plate (140), the second matching tooth (520) is arranged on the connecting plate (140) and faces the first matching tooth (510), and the first matching tooth (510) is meshed with the second matching tooth (520) to realize matching connection of the connecting plate (140) and the bearing seat main body (120); the adapter structure (600) comprises a transmission bearing (610), an adapter sleeve (620) and a fastening screw sleeve (630), wherein a matching shaft (640) is arranged at the other end of the connecting plate (140), the adapter sleeve (620) is rotatably sleeved on the periphery of the matching shaft (640) through the transmission bearing (610), one end of the fastening screw sleeve (630) is arranged on the adapter sleeve (620) in a penetrating mode and fixedly connected with the matching shaft (640), the other end of the fastening screw sleeve (630) is in sealing connection with the adapter sleeve (620), and the elastic coupling (130) is sleeved on the periphery of the adapter sleeve (620) and fixedly connected with the connecting plate (140).
  10. 10. The test bench drive system according to claim 8, characterized in that the elastic coupling (130) has an inner connection member (131), an adapter member (132) and a housing (133) which are connected in sequence in the radial direction of the elastic coupling (130), the adapter member (132) being formed as an elastic member.

Description

Test bench transmission system Technical Field The utility model relates to the technical field of engine bench testing, in particular to a test bench transmission system. Background In the technical field of modern engineering, particularly in numerous industries related to development and testing of power systems, such as automobiles, aerospace, ships and the like, the accurate evaluation of engine performance is important. In order to improve the accuracy of engine performance evaluation, the shaft connection between the dynamometer and the engine is gradually evolved into a test bed transmission system at present, and the test bed transmission system can meet the requirements of buffering vibration absorption, adapting to dynamic displacement, being strong in universality and the like. However, the coaxiality of the driving shaft of the conventional test bed transmission system and the shaft system of the dynamometer cannot easily meet the requirement. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the test bed transmission system, which ensures that the coaxiality of the driving shaft of the test bed transmission system and the shaft system of the dynamometer is easy to meet the requirement, and solves the technical problem of poor coaxiality of the driving shaft of the test bed transmission system and the shaft system of the dynamometer in the prior art. The test bench transmission system comprises a bearing seat assembly, a first part and a second part, wherein 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, the first transmission shaft is connected with the first connecting disc in a matched mode, the first connecting disc is used for limiting 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 connected with the second connecting disc in a matched mode, and the second connecting disc is used for limiting radial displacement of the second transmission shaft. According to the test bench transmission system provided by the embodiment of the utility model, the first connecting disc and the second connecting disc are arranged, so that radial displacement of the first transmission shaft and the second transmission shaft can be avoided to a certain extent, the coaxiality of the first transmission shaft and the second transmission shaft is guaranteed, the coaxiality of the driving shaft of the test bench transmission system and the shaft system of the dynamometer is enabled to easily meet the requirement, the performance of the test bench transmission system is improved, the bidirectional torque transmission between the dynamometer and the test object is enabled to be more stable, and the accuracy of testing the test object is improved. In some embodiments, the first connecting disc is connected to one axial end of the first transmission shaft and is in fit connection with the dynamometer, and the second connecting disc is connected to one axial end of the second transmission shaft and is in fit connection with the bearing seat assembly. In some embodiments, the first connecting disc and/or the second connecting disc comprises a connecting disc main body, wherein the connecting disc main body is connected with the dynamometer and/or the bearing seat assembly, an assembly channel is formed in the connecting disc main body, one axial end of the first transmission shaft and/or one axial end of the second transmission shaft can be assembled in the assembly channel, the limiting structure comprises a plurality of limiting balls, the limiting balls are arranged on the peripheral wall of the assembly channel and can move along the radial direction of the assembly channel, the limiting balls are arranged at intervals along the circumferential direction of the assembly channel, limiting concave parts are formed in the outer side of the radial direction of the first transmission shaft and/or the second transmission shaft, and the limiting balls can be in limiting fit in the limiting concave parts. In some embodiments, the limiting structure further comprises a sliding sleeve sleeved on the periphery of the assembly channel and opposite to the limiting ball, a matching concave part for avoiding the limiting ball is arranged on the inner peripheral wall of the sliding sleeve, at least part of the limiting ball can move into the matching concave part, and a resetting piece is used for driving the sliding sleeve to move in a direction away from the connecting disc main body so that the inner peripheral wall of the sliding sleeve wit