Coupling structure for motorcycle engine pedestal

Abstract

The utility model belongs to the technical field of motorcycle engine testing, and particularly relates to a coupling structure for a motorcycle engine pedestal. A stand column is arranged on the base, a coupler body is rotationally arranged at the upper end of the stand column, one end of the coupler body is provided with a first connecting part connected with the output end of a dynamometer, the other end of the coupler body is provided with a second connecting part connected with the output end of a tested engine, and the second connecting part is a spline housing. The spline housing is detachably connected with the other end of the coupling body, and the spline housing comprises a first spline hole connected with the output end of a tested engine; according to the utility model, the spline housing is detachably connected with the coupling body, so that the connection of different types of engines and dynamometers can be met by replacing the spline housing, the test efficiency is improved, and the test cost is reduced.

Description

Technical field:

[0001] The utility model belongs to the technical field of motorcycle engine testing, in particular to a coupling structure for a motorcycle engine bench. Background technology:

[0002] In engine testing, couplings are crucial transmission components connecting the engine or powertrain to the dynamometer. However, the wide variety of engines requires a correspondingly diverse set of couplings, leading to a growing number of couplings connecting the engine to the test bench. This not only makes management and use difficult, with no interchangeability, but also increases testing costs and is inconvenient to maintain. Summary of the invention:

[0003] The utility model aims to provide a coupling structure for a motorcycle engine bench, which can meet the connection requirements of different types of engines and dynamometers by replacing a spline sleeve and reduce experimental costs.

[0004] The utility model is achieved in this way:

[0005] A coupling structure for a motorcycle engine stand includes a base, a column is provided on the base, and a coupling body is rotatably provided on the upper end of the column. One end of the coupling body has a first connection portion connected to the output end of a dynamometer, and the other end has a second connection portion connected to the output end of a measured engine. The second connection portion is a spline sleeve. The spline sleeve is detachably connected to the other end of the coupling body. The spline sleeve includes a first spline hole connected to the output end of the measured engine.

[0006] In the above-mentioned coupling structure for a motorcycle engine stand, the detachable connection is: a plurality of mounting holes are distributed circumferentially on the spline sleeve and the outer periphery of the first spline hole, and threaded holes corresponding to the positions and numbers of the mounting holes are provided on the other end face of the coupling body, and screws are passed through the mounting holes and screwed into the threaded holes.

[0007] In the above-mentioned coupling structure for a motorcycle engine stand, the detachable connection is: a spline shaft extends from one end of the spline sleeve, the spline shaft is coaxially arranged with the first spline hole, a second spline hole is provided at the other end of the coupling body, a first plug hole is radially provided on the spline shaft, a second plug hole is radially provided at the other end of the coupling body that passes through the second spline hole, the spline shaft is inserted into the second spline hole, the first plug hole and the second plug hole are coaxially arranged, and pins are inserted into the first plug hole and the second plug hole.

[0008] In the above-mentioned coupling structure for a motorcycle engine stand, a number of first bosses are evenly distributed circumferentially on the other end face of the coupling body, a plastic sleeve is sheathed around the first bosses, and a first connecting hole is provided between adjacent first bosses. Second bosses are provided on the end face of the spline sleeve adjacent to the coupling body, and the position and number of the second bosses correspond one-to-one to the first connecting holes. A plastic sleeve is sheathed around the second bosses, and second connecting holes are provided between adjacent second bosses. The position and number of the second connecting holes correspond one-to-one to the first bosses. When connecting, the second boss on the spline sleeve is inserted into the first connecting hole of the coupling body, and at the same time, the first boss on the coupling body is also inserted into the second connecting hole of the spline sleeve.

[0009] In the above-mentioned coupling structure for a motorcycle engine stand, a coupling hole is provided on the column, and the coupling body is rotatably arranged on the coupling hole through a bearing.

[0010] In the above-mentioned coupling structure for a motorcycle engine stand, a limiting cam is provided on the coupling body. After the coupling body is connected to the column, the limiting cam is located on one side of the bearing, and a limiting member is provided on the coupling body on the other side of the bearing to limit the axial position of the bearing.

[0011] In the above-mentioned coupling structure for a motorcycle engine stand, the lower end of the column is fixed to the base by welding, or a flange is provided at the lower end of the column and the flange is fixed to the base by screws.

[0012] The outstanding advantages of the utility model compared with the prior art are:

[0013] 1. The utility model adopts a detachable connection between the spline sleeve and the coupling body, so that the spline sleeve can be replaced to meet the connection requirements of different types of engines and dynamometers, thereby improving test efficiency and reducing test costs compared to equipping different types of couplings;

[0014] 2. The base of this utility model is used to provide a standard plane and column installation. The column supports the coupling, making the transmission more stable.

[0015] 3. The spline sleeve of the utility model is easy to disassemble and assemble with the coupling body. It only needs to be equipped with different types of spline sleeves. Compared with replacing the entire coupling, the experimental cost is reduced. Description of the drawings:

[0016] Figure 1 It is a schematic cross-sectional view of the present utility model;

[0017] Figure 2 This is a simplified diagram of the utility model in use;

[0018] Figure 3 It is a schematic diagram of the spline sleeve of the utility model;

[0019] Figure 4 It is a partial cross-sectional view of the other end of the coupling body of the present invention;

[0020] Figure 5 It is a schematic diagram of the column of the present utility model.

[0021] In the figure: 1. base; 2. column; 3. coupling body; 4. dynamometer; 5. first connecting part; 6. engine; 7. spline sleeve; 8. first spline hole; 9. bearing; 10. limiting ridge; 11. limiting member; 12. plug-in part; 13. mounting hole; 14. threaded hole; 15. avoidance hole. Specific implementation method:

[0022] The present invention is further described below with reference to specific embodiments. Figure 1 —5:

[0023] The utility model provides a coupling structure for a motorcycle engine stand, which includes a base 1, a column 2 is provided on the base 1, and a coupling body 3 is rotatably provided on the upper end of the column 2. One end of the coupling body 3 has a first connecting portion 5 connected to the output end of a dynamometer 4, and the other end has a second connecting portion connected to the output end of a measured engine 6. The second connecting portion is a spline sleeve 7. The spline sleeve 7 is detachably connected to the other end of the coupling body 3. The spline sleeve 7 includes a first spline hole 8 connected to the output end of the measured engine 6.

[0024] The present invention utilizes a detachable connection between the spline sleeve 7 and the coupling body 3. This allows the spline sleeve 7 to be replaced to accommodate connections between different types of engines 6 and the dynamometer 4, thereby improving test efficiency and reducing test costs. If the spline sleeve 7 is damaged or its accuracy falls short of the required level, only the spline sleeve 7 needs to be replaced, without replacing the entire coupling. This also reduces test costs.

[0025] In addition, the base 1 of the present invention is used to provide a standard plane and the installation of the column 2, and the column 2 supports the coupling body 3, making the transmission more stable.

[0026] It should be noted that the connection between the first connecting portion 5 and the output end of the dynamometer 4 is a fixed structure. Therefore, different types of engines 6 can achieve the same axis of the coupling, the output end of the dynamometer 4, and the output end of the engine 6 by raising and lowering the engine seat.

[0027] Furthermore, a coupling hole is provided on the column 2 , and the coupling body 3 is rotatably provided on the coupling hole via a bearing 9 .

[0028] In order to achieve axial limitation of the bearing 9, a limiting cam 10 is provided on the coupling body 3 of the present invention. After the coupling body 3 is connected to the column 2, the limiting cam 10 is located on one side of the bearing 9, and a limiting member 11 is provided on the coupling body 3 on the other side of the bearing 9.

[0029] Generally speaking, the limiting member 11 is a retaining spring, a nut, etc.

[0030] As can be seen from the above, the column 2 and the base 1 of the utility model are fixedly connected. As one embodiment of the fixed connection, the lower end of the column 2 is provided with a plug-in portion 12, and a plug-in hole is provided on the base 1. The plug-in portion 12 of the column 2 is inserted into the plug-in hole and the fixed connection between the two is achieved by welding.

[0031] Of course, as another embodiment of fixed connection, a flange is provided at the lower end of the column 2 , and the flange is fixed to the base 1 by screws.

[0032] In addition, if Figure 3 and Figure 4 As shown, one embodiment of the detachable connection between the spline sleeve 7 and the coupling body 3 is disclosed. A plurality of mounting holes 13 are distributed circumferentially on the spline sleeve 7 and the first spline hole 8, and threaded holes 14 corresponding to the positions and numbers of the mounting holes 13 are provided on the other end face of the coupling body 3. Screws pass through the mounting holes 13 and are screwed into the threaded holes 14.

[0033] In this embodiment, the other end of the coupling body 3 is further provided with a relief hole 15 coaxially arranged with the first spline hole 8. When the output end of the engine 6 under test is longer than the first spline hole 8, the engine 6 can be inserted into the relief hole 15, allowing the test to proceed normally. Simultaneously, the thickness of the spline sleeve 7 can be reduced to shorten the entire coupling length, improving the overall rigidity of the coupling and the connection strength between the spline sleeve 7 and the coupling body 3. This also prevents wobble caused by an excessively long coupling.

[0034] In order to improve the locking effect of the screw, a rubber pad or paper pad can be provided between the coupling body 3 and the spline sleeve 7. When the screw is tightened, the rubber pad or paper pad can produce a certain deformation, which facilitates the tightening between the coupling body 3 and the spline sleeve 7 and improves the locking effect of the screw.

[0035] As another embodiment of the detachable connection between the spline sleeve 7 and the coupling body 3, a spline shaft is extended from one end of the spline sleeve 7 in this embodiment, and the spline shaft is coaxially arranged with the first spline hole 8. A second spline hole is provided at the other end of the coupling body 3, and a first socket is radially arranged on the spline shaft. A second socket that passes through the second spline hole is radially arranged at the other end of the coupling body 3, and the spline shaft is inserted into the second spline hole. The first socket and the second socket are coaxially arranged, and a pin is inserted into the first socket and the second socket, and a head is provided at one end of the pin and a locking nut is screwed on the other end.

[0036] The present invention also provides a detachable connection structure, specifically: a plurality of first bosses are evenly distributed circumferentially on the other end face of the coupling body 3, a plastic sleeve is sheathed on the outer surface of the first bosses, a first connection hole is provided between adjacent first bosses, a second boss is provided on the end face of the spline sleeve 7 adjacent to the coupling body 3, the position and number of which correspond one-to-one to the first connection holes, a plastic sleeve is sheathed on the outer surface of the second bosses, a second connection hole is provided between adjacent second bosses, and the position and number of the second connection holes correspond one-to-one to those of the first bosses. When connecting, the second boss on the spline sleeve 7 is inserted into the first connection hole of the coupling body 3, and at the same time, the first boss on the coupling body 3 is also inserted into the second connection hole of the spline sleeve 7. Since the first and second bosses are both provided with plastic sleeves, the plastic sleeves are tightly fitted to the first and second connection holes. When disassembling, the spline sleeve 7 can be pulled out forcefully.

[0037] In order to prevent the plastic sleeve from being separated from the first boss or the second boss when being pulled out, washers and end screws can be provided on the end faces of the first boss and the second boss to limit the position of the plastic sleeve.

[0038] Of course, the plastic sleeve and the first protrusion or the second protrusion can also be directly injection-molded into one piece, so that the two are not easy to separate.

[0039] The usage of this utility model:

[0040] The first connection portion 5 of the coupling body 3 is connected to the output end of the dynamometer 4 , a spline sleeve 7 is installed on the other end of the coupling body 3 , and the output end of the engine 6 to be measured is connected to the spline sleeve 7 .

[0041] When testing different types of engines 6, since the connection between the first connecting part 5 and the output end of the dynamometer 4 is a fixed structure, the corresponding spline sleeve 7 is replaced, and the height of the tested engine 6 is adjusted through the engine seat to ensure that the output end of the dynamometer 4, the coupling, and the output end axis of the engine 6 are collinear.

[0042] The above embodiment is only one of the preferred embodiments of the present invention and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coupling structure for a motorcycle engine stand, characterized by: The invention comprises a base (1), a column (2) is arranged on the base (1), a coupling body (3) is rotatably arranged on the upper end of the column (2), one end of the coupling body (3) has a first connection part (5) connected to the output end of the dynamometer (4), and the other end has a second connection part connected to the output end of the engine (6) to be measured, the second connection part is a spline sleeve (7), the spline sleeve (7) and the other end of the coupling body (3) are detachably connected, and the spline sleeve (7) includes a first spline hole (8) connected to the output end of the engine (6) to be measured.

2. The coupling structure for a motorcycle engine stand according to claim 1, characterized in that: The detachable connection is as follows: a plurality of mounting holes are distributed on the outer circumference of the first spline hole (8) on the spline sleeve (7), and threaded holes corresponding to the positions and numbers of the mounting holes are provided on the other end surface of the coupling body (3), and screws pass through the mounting holes and are screwed into the threaded holes.

3. The coupling structure for a motorcycle engine stand according to claim 1, characterized in that: The detachable connection is as follows: a spline shaft extends from one end of the spline sleeve (7), the spline shaft is coaxially arranged with the first spline hole, a second spline hole is arranged at the other end of the coupling, a first jack is radially arranged on the spline shaft, a second jack is radially arranged through the second spline hole at the other end of the coupling body (3), the spline shaft is inserted into the second spline hole, the first jack and the second jack are coaxially arranged, and pins are inserted into the first jack and the second jack.

4. The coupling structure for a motorcycle engine stand according to claim 1, characterized in that: A plurality of first bosses are evenly distributed circumferentially on the other end surface of the coupling body (3), a plastic sleeve is sheathed on the outer surface of the first bosses, and a first connection hole is provided between adjacent first bosses. Second bosses are provided on the end surface of the spline sleeve (7) adjacent to the coupling body (3), and the positions and number of the second bosses correspond one-to-one to the first connection holes. A plastic sleeve is sheathed on the outer surface of the second bosses, and second connection holes are provided between adjacent second bosses. The positions and number of the second connection holes correspond one-to-one to the first bosses. When connecting, the second boss on the spline sleeve (7) is inserted into the first connection hole of the coupling body (3), and at the same time, the first boss on the coupling body (3) is also inserted into the second connection hole of the spline sleeve (7).

5. A coupling structure for a motorcycle engine stand according to claim 1, 2, 3 or 4, characterized in that: A coupling hole is provided on the column (2), and the coupling body (3) is rotatably arranged on the coupling hole via a bearing (9).

6. The coupling structure for a motorcycle engine stand according to claim 5, characterized in that: A limiting convex edge (10) is provided on the coupling body (3). After the coupling body (3) is connected to the column (2), the limiting convex edge (10) is located on one side of the bearing (9). A limiting member (11) is provided on the coupling body (3) on the other side of the bearing (9) to axially limit the bearing (9).

7. The coupling structure for a motorcycle engine stand according to claim 1, characterized in that: The lower end of the column (2) is fixed to the base (1) by welding, or a flange is provided at the lower end of the column (2), and the flange is fixed to the base (1) by screws.

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