Flexible coupling of engine

Abstract

The utility model discloses an engine flexible coupler which comprises an input shaft, a driven flange plate assembly, a driving flange plate assembly, a universal bearing assembly, a damping transmission rubber assembly, a first spline housing assembly, a transmission shaft, a second spline housing assembly, a third spline housing assembly and an output shaft. The driving flange assembly is installed on the driven flange assembly, and the transmission shaft is connected with the universal bearing assembly. Through the application of the flexible coupling of the engine, it can be ensured that an input shaft of a speed increasing box, a driving and driven flange plate body and a damping transmission rubber body are coaxial, and one end of a transmission shaft is concentric with the driving and driven flange plate body, so that the flexible coupling of the engine and the input shaft rotate coaxially; and the transmission shaft can weaken the installation deviation of the output shaft of the engine, the weakened deviation is compensated by the deformation of the damping transmission rubber main body, and the installation convenience is improved while the installation precision requirement is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a flexible coupling of an engine. Background Art

[0002] As medium and large displacement motorcycles continue to become more popular, a dynamometer with a larger torque absorption capacity is required when conducting durability tests on motorcycle engines with larger displacements. Installing a speed increaser can solve the problem of insufficient torque absorption capacity of the dynamometer. Due to the installation of a speed increaser, two sets of couplings are required to connect the engine to the speed increaser and the speed increaser to the dynamometer. This requires the coupling to have as small an installation accuracy as possible, so as to compensate for the error caused by the installation of the two-stage coupling, and eliminate problems such as broken shafts, speed increaser damage, and dynamometer torque sensor damage caused by different shafts on the master and slave sides. However, the existing flexible couplings on the market can only play a certain role in torque buffering, and their ability to compensate for eccentricity, deflection, and offset when installing the engine test bench is very limited. Therefore, they have high requirements for installation accuracy and cannot achieve the above functions. Utility Model Content

[0003] In view of this, in order to solve the above problems, the purpose of the utility model is to provide an engine flexible coupling, comprising:

[0004] An input shaft, a driven flange assembly, an active flange assembly, a universal bearing assembly, a shock-absorbing transmission rubber assembly, a first spline sleeve assembly, a transmission shaft, a second spline sleeve assembly, a third spline sleeve assembly and an output shaft, wherein one end of the driven flange assembly is sleeved on one end of the input shaft, one end of the active flange assembly is installed on the other end of the driven flange assembly, the universal bearing assembly is installed on the active flange assembly, one end of the shock-absorbing transmission rubber assembly is installed on the other end of the active flange assembly, the first spline sleeve assembly is sleeved in the shock-absorbing transmission rubber assembly, one end of the transmission shaft is sleeved in the first spline sleeve assembly, one end of the transmission shaft is connected to the universal bearing assembly, one end of the second spline sleeve assembly is sleeved on the other end of the transmission shaft, the third spline sleeve assembly is sleeved in the other end of the second spline sleeve assembly, and one end of the output shaft is sleeved in the third spline sleeve assembly.

[0005] In another preferred embodiment, the driven flange assembly includes: a driven flange body, at least a semicircular key, a flat washer and a first flange bolt, the driven flange body having a first channel portion and a second channel portion that are connected in sequence, the first channel portion being close to one end of the driven flange body, the first channel portion being sleeved on the outer wall of one end of the input shaft, the outer wall of the input shaft being provided with at least a semicircular groove, the semicircular key being installed on the inner wall of the first channel portion, the semicircular key being installed in the semicircular groove, one end of the input shaft being provided with a bolt hole, the first flange bolt being arranged in the second channel portion, one end of the first flange bolt being installed in the bolt hole, the flat washer being installed between one end of the input shaft and the first flange bolt, and one end of the active flange assembly being installed on the other end of the driven flange body.

[0006] In another preferred embodiment, the active flange assembly includes: an active flange body, a plurality of positioning pins and a plurality of second flange bolts, the other end of the driven flange body is provided with a plurality of first pin holes, and the plurality of first pin holes are arranged along the circumference of the driven flange body, one end of the active flange body is provided with a plurality of second pin holes, and the two ends of the plurality of positioning pins are installed in the plurality of first pin holes and the plurality of second pin holes, the driven flange body is provided with a plurality of first locking holes, the active flange body is provided with a plurality of second locking holes, one end of each of the second flange bolts passes through a corresponding first locking hole and a corresponding second locking hole in sequence, the active flange body has a center hole, the center hole is coaxially arranged with the bolt hole, the universal bearing assembly is installed in the center hole, and one end of the shock-absorbing transmission rubber assembly is installed at the other end of the active flange body.

[0007] In another preferred embodiment, the universal bearing assembly includes: a universal bearing body and a bearing pin, the universal bearing body is installed in the center hole, the universal bearing body is provided with a receiving hole, the receiving hole is coaxially arranged with the center hole, one end of the bearing pin is installed in the receiving hole, and the other end of the bearing pin is installed on one end of the transmission shaft.

[0008] In another preferred embodiment, the shock-absorbing transmission rubber assembly includes: a shock-absorbing transmission rubber body, a plurality of locking pins and a plurality of first fixing bolts, the shock-absorbing transmission rubber assembly is provided with a plurality of first fixing holes, the plurality of first fixing holes are arranged along the circumference of the shock-absorbing transmission rubber body, the axes of the plurality of first fixing holes are arranged along the axial direction of the center hole, the active flange body is provided with a plurality of second fixing holes, one end of the plurality of first fixing bolts passes through a corresponding first fixing hole and a corresponding second fixing hole in sequence, one end of the shock-absorbing transmission rubber body is provided with a plurality of first pin shaft holes, the plurality of first pin shaft holes are arranged along the circumference of the shock-absorbing transmission rubber body, the other end of the active flange body is provided with a plurality of second pin shaft holes, the two ends of the plurality of locking pins are installed in the plurality of first pin shaft holes and the plurality of second pin shaft holes, the shock-absorbing transmission rubber body is provided with a through hole, the through hole is coaxially arranged with the center hole, and the first spline sleeve assembly is installed in the through hole.

[0009] In another preferred embodiment, the first spline sleeve assembly includes: a first spline sleeve body, a plurality of second fixing bolts and a plurality of third fixing bolts, the first spline sleeve body is installed in the through hole, the first spline sleeve body has a third channel portion and a fourth channel portion that are connected in sequence, the third channel portion and the fourth channel portion are both coaxially arranged with the through hole, the third channel portion is arranged close to the active flange body, one end of the transmission shaft passes through the fourth channel portion and the third channel portion in sequence, the outer wall of the damping transmission rubber body is provided with a plurality of third fixing holes, and the plurality of third fixing holes are arranged along the The shock-absorbing transmission rubber body is arranged circumferentially, and the outer wall of the first spline sleeve body is provided with a plurality of fourth fixing holes and a plurality of fifth fixing holes, and the plurality of fourth fixing holes are all communicated with the third channel portion, and the plurality of fifth fixing holes are all communicated with the fourth channel portion, and the plurality of fifth fixing holes are arranged along the circumference of the first spline sleeve body, and one end of each of the second fixing bolts passes through a corresponding third fixing hole and a corresponding fourth fixing hole in sequence, and one end of each of the third fixing bolts is installed in a corresponding fifth fixing hole, and one end of each of the third fixing bolts is clamped against the outer wall of the transmission shaft.

[0010] In another preferred embodiment, the second spline sleeve assembly includes: a second spline sleeve body and a first flange nut, the second spline sleeve body has a fifth channel portion and a sixth channel portion connected in sequence, the other end of the transmission shaft passes through the fifth channel portion and extends into the sixth channel portion, the first flange nut is installed on the other end of the transmission shaft, and the third spline sleeve assembly is sleeved in the sixth channel portion.

[0011] In another preferred embodiment, the third spline sleeve assembly includes: a third spline sleeve body and a second flange nut, the third spline sleeve body is sleeved in the sixth channel portion, the third spline sleeve body has a seventh channel portion, one end of the output shaft passes through the seventh channel portion and extends into the sixth channel portion, and the second flange nut is installed on one end of the output shaft.

[0012] Due to the adoption of the above technical solution, the utility model has the following positive effects compared with the prior art: through the application of the utility model, an engine flexible coupling is provided, which can ensure that the speed increaser input shaft, the master and slave flange bodies, and the shock-absorbing transmission rubber body are coaxial, and one end of the transmission shaft is concentric with the master and slave flange bodies, so that the device rotates coaxially with the input shaft, and the transmission shaft can weaken the installation deviation of the engine output shaft. The weakened deviation is compensated by the deformation of the shock-absorbing transmission rubber body, thereby improving the convenience of installation while reducing the installation accuracy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is an overall schematic diagram of an engine flexible coupling.

[0014] In the attached drawings: 1. input shaft; 2. transmission shaft; 3. driven flange body; 4. semicircular key; 5. flat washer; 6. first flange bolt; 7. active flange body; 8. locating pin; 9. second flange bolt; 10. universal bearing body; 11. bearing pin; 12. shock-absorbing transmission rubber body; 13. locking pin; 14. first fixing bolt; 15. first spline sleeve body; 16. second fixing bolt; 17. third fixing bolt; 18. second spline sleeve body; 19. first flange nut; 20. third spline sleeve body; 21. second flange nut; 22. output shaft. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0016] like Figure 1 As shown, a preferred embodiment of an engine flexible coupling is shown, comprising:

[0017] Input shaft 1, driven flange assembly, active flange assembly, universal bearing assembly, shock-absorbing transmission rubber assembly, first spline sleeve assembly, transmission shaft 2, second spline sleeve assembly, third spline sleeve assembly and output shaft 22, one end of the driven flange assembly is sleeved on one end of the input shaft 1, one end of the active flange assembly is installed on the other end of the driven flange assembly, the universal bearing assembly is installed on the active flange assembly, one end of the shock-absorbing transmission rubber assembly is installed on the other end of the active flange assembly, the first spline sleeve assembly is sleeved in the shock-absorbing transmission rubber assembly, one end of the transmission shaft 2 is sleeved in the first spline sleeve assembly, one end of the transmission shaft 2 is connected to the universal bearing assembly, one end of the second spline sleeve assembly is sleeved on the other end of the transmission shaft 2, the third spline sleeve assembly is sleeved in the other end of the second spline sleeve assembly, and one end of the output shaft 22 is sleeved in the third spline sleeve assembly.

[0018] In actual use, the device does not need to be disassembled after installation. When installing the engine test bench, it is only necessary to adjust the position and angle of the engine test bench so that the transmission shaft 2 and the shock-absorbing transmission rubber body 12 are basically coaxial. The deviation is compensated by the deformation of the shock-absorbing transmission rubber body 12.

[0019] Further, as a preferred embodiment, the driven flange assembly includes: a driven flange body 3, at least a semicircular key 4, a flat washer 5 and a first flange bolt 6, the driven flange body 3 has a first channel portion and a second channel portion connected in sequence, the first channel portion is close to one end of the driven flange body 3, the first channel portion is sleeved on the outer wall of one end of the input shaft 1, the outer wall of the input shaft 1 is provided with at least a semicircular groove, the semicircular key 4 is installed on the inner wall of the first channel portion, the semicircular key 4 is installed in the semicircular groove, one end of the input shaft 1 is provided with a bolt hole, the first flange bolt 6 is arranged in the second channel portion, one end of the first flange bolt 6 is installed in the bolt hole, the flat washer 5 is installed between one end of the input shaft 1 and the first flange bolt 6, and one end of the active flange assembly is installed on the other end of the driven flange body 3.

[0020] Further, as a preferred embodiment, the active flange assembly includes: an active flange body 7, a plurality of positioning pins 8 and a plurality of second flange bolts 9, a plurality of first pin holes are provided at the other end of the driven flange body 3, and the plurality of first pin holes are arranged along the circumference of the driven flange body 3, a plurality of second pin holes are provided at one end of the active flange body 7, and both ends of the plurality of positioning pins 8 are installed in the plurality of first pin holes and the plurality of second pin holes, the driven flange body 3 is provided with a plurality of first locking holes, and the active flange body 7 is provided with a plurality of second locking holes, and one end of each second flange bolt 9 passes through a corresponding first locking hole and a second locking hole in sequence, the active flange body 7 has a center hole, the center hole is coaxially arranged with the bolt hole, the universal bearing assembly is installed in the center hole, and one end of the shock-absorbing transmission rubber assembly is installed at the other end of the active flange body 7. Furthermore, the number of the locating pins 8 and the second flange bolts 9 are both three. Three evenly distributed locating pins 8 are used to coaxially position the driven flange body 3 and the active flange body 7, and three axially evenly distributed second flange bolts 9 are used to lock them, so that the driven flange body 3 and the active flange body 7 can rotate coaxially with the input shaft 1 of the speed increaser during operation, thereby protecting the speed increaser.

[0021] Further, as a preferred embodiment, the universal bearing assembly includes: a universal bearing body 10 and a bearing pin 11, the universal bearing body 10 is installed in the center hole, the universal bearing body 10 is provided with a receiving hole, the receiving hole is coaxially arranged with the center hole, one end of the bearing pin 11 is installed in the receiving hole, and the other end of the bearing pin 11 is installed at one end of the transmission shaft 2. Further, the bearing pin 11 in the receiving hole of the universal bearing body 10 is coaxially installed with the transmission shaft 2 by thread, which can not only ensure that the transmission shaft 2 is concentric with the active flange body 7, but also allow the transmission shaft 2 to deflect freely during installation, thereby improving the convenience during installation.

[0022] Further, as a preferred embodiment, the shock-absorbing transmission rubber assembly includes: a shock-absorbing transmission rubber body 12, a plurality of locking pins 13 and a plurality of first fixing bolts 14, the shock-absorbing transmission rubber assembly is provided with a plurality of first fixing holes, the plurality of first fixing holes are arranged along the circumference of the shock-absorbing transmission rubber body 12, the axes of the plurality of first fixing holes are arranged along the axis direction of the center hole, the active flange body 7 is provided with a plurality of second fixing holes, one end of the plurality of first fixing bolts 14 passes through the corresponding first fixing hole and second fixing hole in sequence, one end of the shock-absorbing transmission rubber body 12 is provided with a plurality of first pin shaft holes, the plurality of first pin shaft holes are arranged along the circumference of the shock-absorbing transmission rubber body 12, the other end of the active flange body 7 is provided with a plurality of second pin shaft holes, the two ends of the plurality of locking pins 13 are installed in the plurality of first pin shaft holes and the plurality of second pin shaft holes, the shock-absorbing transmission rubber body 12 is provided with a through hole, the through hole is coaxially arranged with the center hole, and the first spline sleeve assembly is installed in the through hole. Furthermore, the number of locking pins 13 and first fixing bolts 14 is three. The shock-absorbing transmission rubber body 12 and the active flange body 7 are coaxially positioned by three evenly distributed locking pins 13, and are locked by three axially evenly distributed first fixing bolts 14, so that the shock-absorbing transmission rubber body 12 and the active flange body 7 can rotate coaxially.

[0023] Further, as a preferred embodiment, the first spline sleeve assembly includes: a first spline sleeve body 15, a plurality of second fixing bolts 16 and a plurality of third fixing bolts 17, the first spline sleeve body 15 is installed in the through hole, the first spline sleeve body 15 has a third channel portion and a fourth channel portion that are sequentially connected, the third channel portion and the fourth channel portion are both coaxially arranged with the through hole, the third channel portion is arranged close to the active flange body 7, one end of the transmission shaft 2 passes through the fourth channel portion and the third channel portion in sequence, the outer wall of the damping transmission rubber body 12 is provided with a plurality of third fixing holes, and the plurality of third fixing holes are provided. The fixed holes are arranged along the circumference of the shock-absorbing transmission rubber body 12, and the outer wall of the first spline sleeve body 15 is provided with a plurality of fourth fixing holes and a plurality of fifth fixing holes, and the plurality of fourth fixing holes are all connected to the third channel portion, and the plurality of fifth fixing holes are all connected to the fourth channel portion. The plurality of fifth fixing holes are arranged along the circumference of the first spline sleeve body 15, and one end of each second fixing bolt 16 passes through a corresponding third fixing hole and a fourth fixing hole in sequence, and one end of each third fixing bolt 17 is installed in a corresponding fifth fixing hole, and one end of each third fixing bolt 17 is clamped against the outer wall of the transmission shaft 2. Furthermore, the number of the second fixing bolts 16 and the third fixing bolts 17 are both three. Three third fixing bolts 17 are used to limit the axial movement of the transmission shaft 2 and the first spline sleeve body 15. Three radially evenly distributed second fixing bolts 16 are used to fix the first spline sleeve body 15 and the shock-absorbing transmission rubber body 12, thereby transmitting power from the first spline sleeve body 15 to the shock-absorbing transmission rubber body 12. The shock-absorbing transmission rubber body 12 is responsible for coaxially and smoothly transmitting power to the active flange body 7.

[0024] Further, as a preferred embodiment, the second spline sleeve assembly includes: a second spline sleeve body 18 and a first flange nut 19, the second spline sleeve body 18 has a fifth channel portion and a sixth channel portion which are connected in sequence, the other end of the transmission shaft 2 passes through the fifth channel portion and extends into the sixth channel portion, the first flange nut 19 is installed at the other end of the transmission shaft 2, and the third spline sleeve assembly is sleeved in the sixth channel portion.

[0025] Further, as a preferred embodiment, the third spline sleeve assembly includes: a third spline sleeve body 20 and a second flange nut 21, the third spline sleeve body 20 is sleeved in the sixth channel portion, the third spline sleeve body 20 has a seventh channel portion, one end of the output shaft 22 passes through the seventh channel portion and extends into the sixth channel portion, and the second flange nut 21 is installed on one end of the output shaft 22.

[0026] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine flexible coupling, characterized in that: include: An input shaft, a driven flange assembly, an active flange assembly, a universal bearing assembly, a shock-absorbing transmission rubber assembly, a first spline sleeve assembly, a transmission shaft, a second spline sleeve assembly, a third spline sleeve assembly and an output shaft, wherein one end of the driven flange assembly is sleeved on one end of the input shaft, one end of the active flange assembly is installed on the other end of the driven flange assembly, the universal bearing assembly is installed on the active flange assembly, one end of the shock-absorbing transmission rubber assembly is installed on the other end of the active flange assembly, the first spline sleeve assembly is sleeved in the shock-absorbing transmission rubber assembly, one end of the transmission shaft is sleeved in the first spline sleeve assembly, one end of the transmission shaft is connected to the universal bearing assembly, one end of the second spline sleeve assembly is sleeved on the other end of the transmission shaft, the third spline sleeve assembly is sleeved in the other end of the second spline sleeve assembly, and one end of the output shaft is sleeved in the third spline sleeve assembly.

2. The engine flexible coupling according to claim 1, characterized in that: The driven flange assembly includes: a driven flange body, at least a semicircular key, a flat washer and a first flange bolt. The driven flange body has a first channel portion and a second channel portion which are connected in sequence. The first channel portion is close to one end of the driven flange body. The first channel portion is sleeved on the outer wall of one end of the input shaft. The outer wall of the input shaft is provided with at least a semicircular groove. The semicircular key is installed on the inner wall of the first channel portion. The semicircular key is installed in the semicircular groove. A bolt hole is provided at one end of the input shaft. The first flange bolt is arranged in the second channel portion. One end of the first flange bolt is installed in the bolt hole. The flat washer is installed between one end of the input shaft and the first flange bolt. One end of the active flange assembly is installed at the other end of the driven flange body.

3. The engine flexible coupling according to claim 2, characterized in that: The active flange assembly includes: an active flange body, a plurality of positioning pins and a plurality of second flange bolts. The other end of the driven flange body is provided with a plurality of first pin holes, and the plurality of first pin holes are arranged along the circumference of the driven flange body. One end of the active flange body is provided with a plurality of second pin holes, and the two ends of the plurality of positioning pins are installed in the plurality of first pin holes and the plurality of second pin holes. The driven flange body is provided with a plurality of first locking holes, and the active flange body is provided with a plurality of second locking holes. One end of each of the second flange bolts passes through a corresponding first locking hole and a corresponding second locking hole in sequence. The active flange body has a center hole, and the center hole is coaxially arranged with the bolt hole. The universal bearing assembly is installed in the center hole, and one end of the shock-absorbing transmission rubber assembly is installed at the other end of the active flange body.

4. The engine flexible coupling according to claim 3, characterized in that: The universal bearing assembly includes: a universal bearing body and a bearing pin. The universal bearing body is installed in the center hole. The universal bearing body is provided with a receiving hole. The receiving hole is coaxially arranged with the center hole. One end of the bearing pin is installed in the receiving hole, and the other end of the bearing pin is installed on one end of the transmission shaft.

5. The engine flexible coupling according to claim 3, characterized in that: The shock-absorbing transmission rubber assembly includes: a shock-absorbing transmission rubber body, a plurality of locking pins and a plurality of first fixing bolts, the shock-absorbing transmission rubber assembly is provided with a plurality of first fixing holes, the plurality of first fixing holes are arranged along the circumference of the shock-absorbing transmission rubber body, the axes of the plurality of first fixing holes are arranged along the axial direction of the center hole, the active flange body is provided with a plurality of second fixing holes, one end of the plurality of first fixing bolts passes through a corresponding first fixing hole and a corresponding second fixing hole in sequence, one end of the shock-absorbing transmission rubber body is provided with a plurality of first pin shaft holes, the plurality of first pin shaft holes are arranged along the circumference of the shock-absorbing transmission rubber body, the other end of the active flange body is provided with a plurality of second pin shaft holes, the two ends of the plurality of locking pins are installed in the plurality of first pin shaft holes and the plurality of second pin shaft holes, the shock-absorbing transmission rubber body is provided with a through hole, the through hole is coaxially arranged with the center hole, and the first spline sleeve assembly is installed in the through hole.

6. The engine flexible coupling according to claim 5, characterized in that: The first spline sleeve assembly includes: a first spline sleeve body, a plurality of second fixing bolts and a plurality of third fixing bolts, the first spline sleeve body is installed in the through hole, the first spline sleeve body has a third channel portion and a fourth channel portion that are connected in sequence, the third channel portion and the fourth channel portion are both coaxially arranged with the through hole, the third channel portion is arranged close to the active flange body, one end of the transmission shaft passes through the fourth channel portion and the third channel portion in sequence, the outer wall of the damping transmission rubber body is provided with a plurality of third fixing holes, and the plurality of third fixing holes are arranged along the damping transmission The rubber body is arranged circumferentially, and the outer wall of the first spline sleeve body is provided with a plurality of fourth fixing holes and a plurality of fifth fixing holes, and the plurality of fourth fixing holes are all communicated with the third channel portion, and the plurality of fifth fixing holes are all communicated with the fourth channel portion, and the plurality of fifth fixing holes are arranged along the circumference of the first spline sleeve body, and one end of each of the second fixing bolts passes through a corresponding third fixing hole and a corresponding fourth fixing hole in sequence, and one end of each of the third fixing bolts is installed in a corresponding fifth fixing hole, and one end of each of the third fixing bolts is abutted against the outer wall of the transmission shaft.

7. The engine flexible coupling according to claim 1, characterized in that: The second spline sleeve assembly includes: a second spline sleeve body and a first flange nut, the second spline sleeve body has a fifth channel portion and a sixth channel portion connected in sequence, the other end of the transmission shaft passes through the fifth channel portion and extends into the sixth channel portion, the first flange nut is installed on the other end of the transmission shaft, and the third spline sleeve assembly is sleeved in the sixth channel portion.

8. The engine flexible coupling according to claim 7, characterized in that: The third spline sleeve assembly includes: a third spline sleeve body and a second flange nut. The third spline sleeve body is sleeved in the sixth channel portion. The third spline sleeve body has a seventh channel portion. One end of the output shaft passes through the seventh channel portion and extends into the sixth channel portion. The second flange nut is installed on one end of the output shaft.

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