Flywheel coupling device for diesel engine test

Abstract

The utility model relates to diesel engine test technology field, concretely is a flywheel coupling device for diesel engine test, its compact structure, convenient operation uses, can satisfy small -batch production demand of small bore diesel engine, it includes general flywheel connecting disc part, elastomer part and spline shaft sleeve part, the flywheel coupling disc of general flywheel connecting disc part is set up with multiple bolt through -hole, spline shaft sleeve part is composed of spline cover, spline shaft and second fastening bolt, second fastening bolt sets up on the flange end face of spline cover and is connected with the bolt hole of flywheel coupling disc, one end of spline shaft is engaged with spline cover, and the other end connects elastomer part, elastomer part is composed of elastomer, third fastening bolt, fourth fastening bolt, fifth fastening bolt and dynamometer transition disc, elastomer is connected with spline shaft through third fastening bolt, elastomer is connected with dynamometer transition disc through fourth fastening bolt, and fifth fastening bolt is used for and dynamometer axle head coupling fixed.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine testing technology, specifically a flywheel connection device for diesel engine testing. Background Technology

[0002] Diesel engine testing is a crucial step in its manufacturing process. During testing, the diesel engine is connected to a dynamometer to test whether its operating load is normal. To verify the engine's key performance indicators, a flywheel coupling device is used to connect the flywheel to the dynamometer during the break-in period. The dynamometer then measures the engine's output power, torque, speed, and other key operating parameters. Generally, the flywheel coupling device used for testing small- and medium-bore diesel engines is a universal joint structure. While it doesn't meet high alignment requirements, it is costly, has a long overall size, and is cumbersome to install and operate. It is only suitable for infrequently used test engines and not for small-batch production. Therefore, a flywheel coupling device solution must be developed that meets coaxiality requirements, has a compact size, is quick and efficient to install, reliable in use, easy to operate, and safe to use, in order to meet the needs of small- and medium-bore diesel engine small-batch production. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a flywheel connection device for diesel engine testing, which has a compact structure, is easy to operate and use, and can meet the small-batch production needs of small- and medium-diameter diesel engines.

[0004] The technical solution is as follows: A flywheel connection device for diesel engine testing, characterized in that it includes a universal flywheel connecting disc component, an elastomer component, and a splined bushing component. The universal flywheel connecting disc component consists of a flywheel connecting disc and a first fastening bolt. The flywheel connecting disc has multiple sets of bolt through holes for connecting with diesel engine flywheels of different specifications, and bolt holes for connecting the splined bushing component. The splined bushing component consists of a splined sleeve, a splined shaft, and a second fastening bolt. The second fastening bolt is disposed on the splined bushing component. The key sleeve is connected to the bolt hole of the flywheel connecting plate on the flange end face. One end of the spline shaft engages with the spline sleeve, and the other end is connected to the elastic body component. The elastic body component consists of an elastic body, a third fastening bolt, a fourth fastening bolt, a fifth fastening bolt, and a dynamometer transition plate. The elastic body is connected to the spline shaft through the third fastening bolt, and the elastic body is connected to the dynamometer transition plate through the fourth fastening bolt. The fifth fastening bolt is set on the dynamometer transition plate for connection and fixation with the dynamometer shaft head.

[0005] A further feature is that a boss is provided in the middle of the flywheel connecting plate, and the flywheel connecting plate and the boss respectively serve as outer circular stops corresponding to the inner stops on the flywheel. The flywheel connecting plate has an inner circular hole, and the flange end face of the spline sleeve has an outer circular stepped stop that mates with the inner circular hole of the flywheel connecting plate. The dynamometer transition plate is provided with an inner circular stop. The elastomeric component is provided with a protective cover component; The protective cover component includes an upper cover and a lower cover connected by a sixth fastening bolt, the lower cover being mounted on a support frame.

[0006] By adopting this utility model, three connected components are used to form a connecting device that can transmit torque. The structure is compact, and the bolts facilitate operation and use, which can meet the small-batch production needs of small- and medium-diameter diesel engines. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 Side view of the flywheel connecting plate assembly (with the first fastening bolt); Figure 3 This is a front view of the flywheel connecting disc component; Figure 4 Schematic diagram of splined bushing assembly; Figure 5 for Figure 4 The left view is a spline overlay; Figure 6 for Figure 4 Sectional view along the AA direction; Figure 7 This is a schematic diagram of an elastomer component; Figure 8 This is the front view of the elastic body; Figure 9 This is the main view of the dynamometer transition plate; Figure 10 This is the front view of the protective shield; Figure 11 This is a side view of the protective shield. Detailed Implementation

[0008] See Figures 1 to 11As shown, a flywheel connection device for diesel engine testing includes a universal flywheel connection disc component 1, an elastic body component 2, a splined bushing component 3, and a protective cover component 4. The flywheel connection disc component 1 connects to the diesel engine flywheel 5, and the elastic body component 2 connects to the dynamometer shaft head 6. The universal flywheel connection disc component 1 consists of a flywheel connection disc 1-1 and a first fastening bolt 1-2. The flywheel connection disc 1-1 has multiple sets of bolt through holes 1-3 for connecting with diesel engine flywheels 5 of different specifications, and bolt holes 1-5 for connecting the splined bushing component 3. A boss 1-4 is provided in the middle of the flywheel connection disc 1-1. The flywheel connection disc 1-1 and the boss 1-4 respectively serve as outer circular stops corresponding to the inner stops on the diesel engine flywheel 5. The first fastening bolt 1-2 passes through the bolt through holes 1-3 to connect the diesel engine flywheel 5. An inner circular hole 1-6 is provided on the flywheel connection disc.

[0009] The spline bushing assembly 3 consists of a spline bushing 3-1, a spline shaft 3-2, and a second fastening bolt 3-3. The second fastening bolt 3-3 is located on the flange end face of the spline bushing 3-1 and connects to the bolt hole 1-5 of the flywheel connecting disc 1-1. The flange end face of the spline bushing 3-1 is provided with an outer circular stepped stop 3-4 that mates with the inner circular hole 1-6 of the flywheel connecting disc 1-1. The spline shaft 3-2 is a short shaft type part, with many external straight teeth evenly distributed at one end for meshing with many internal straight teeth of the spline bushing 3-1. The internal and external gears mesh to transmit the torque generated by the diesel engine to the dynamometer, and also to allow axial movement between the diesel engine and the dynamometer for easy assembly and disassembly of the diesel engine during testing. The other end of the spline shaft 3-2 has four sets of connecting screw holes 3-5 evenly distributed on its outer circumference, which are used to connect the elastomer component 2. The spline shaft sleeve component 3 is used to connect the universal flywheel connecting disc component and the elastomer component to transmit torque while ensuring coaxiality, and to allow free axial movement between the diesel engine and the dynamometer for easy assembly and disassembly of the diesel engine.

[0010] The elastomer component 2 consists of an elastomer 2-1, a third fastening bolt 2-2, a fourth fastening bolt 2-3, a fifth fastening bolt 2-4, and a dynamometer transition plate 2-5. The elastomer 2-1 is connected to the connecting screw hole 3-5 on the spline shaft 3-2 through the third fastening bolt 2-2. The elastomer 2-1 is connected to the dynamometer transition plate 2-5 through the fourth fastening bolt 2-3. The fifth fastening bolt 2-4 is set on the dynamometer transition plate 2-5 for connection and fixation with the dynamometer shaft head 6. The dynamometer transition plate 2-5 is provided with an inner circle stop 2-6, which cooperates with the outer circle stop on the dynamometer shaft head 6 to ensure concentric positioning.

[0011] Because the elastomer component of the diesel engine is prone to splintering fragments after damage during the test run, which may cause accidental injury, a protective cover component 4 was designed to enclose the elastomer component 2 and reduce the safety hazard. The protective cover component 4 includes an upper cover 4-2 and a lower cover 4-3 connected by a sixth fastening bolt 4-1. The lower cover 4-3 is installed on the support frame 4-4. The upper cover 4-2 is equipped with a handle for easy operation. The bottom of the support frame 4-4 is designed with a waist-shaped hole for easy installation.

[0012] Preliminary preparations: First, align the inner circle stop of the dynamometer transition plate 2-5 in the elastomer component 2 with the outer circle stop of the dynamometer shaft head 6, and fasten them together with the fifth fastening bolt 2-4. Fasten the elastomer 2-1 to the dynamometer transition plate 2-5 with the fourth fastening bolt 2-3. Fasten the spline shaft 3-2 to the elastomer component 2 with the third fastening bolt 2-2. After aligning the outer circle stop of the spline sleeve 3-1 with the inner circle hole 1-6 of the flywheel connecting plate 1-1, fasten them together with the second fastening bolt 3-3. Then, slip the spline sleeve 3-1, which is fastened to the universal flywheel connecting plate 1-1, onto the spline shaft 3-2.

[0013] After the diesel engine is initially mounted on the test bench, the concentricity of the inner stop of the diesel engine flywheel 5 and the outer stop of the universal flywheel connecting component is measured and adjusted. The diesel engine mounting feet are then secured, and a set of first fastening bolts 1-2 is used to tighten the diesel engine flywheel 5 and the flywheel connecting plate 1-1 together. This completes the alignment and connection between the diesel engine and the dynamometer. Simultaneously, the protective cover component 4 is installed outside the elastic body component 2 and fixedly mounted on the large plate. After the diesel engine test is completed, simply remove the first fastening bolts 1-2 and axially move the spline sleeve 3-1 to disengage the outer stop of the universal flywheel connecting plate component 1 from the inner stop of the diesel engine flywheel 5. The diesel engine can then be removed from the test bench.

[0014] During subsequent repeated test runs, simply disassembling and reassembling the first fastening bolt and the axially movable universal flywheel connecting plate component 1 will complete the docking of the diesel engine and the dynamometer.

[0015] In summary, this utility model not only achieves high torque transmission between the diesel engine and the dynamometer during test runs, but also quickly and effectively completes the connection and disassembly work between the diesel engine and the dynamometer, while ensuring the necessary alignment and installation accuracy and safety of the diesel engine and the dynamometer.

Claims

1. A flywheel coupling device for diesel engine testing, characterized in that, It includes a universal flywheel connecting plate assembly, an elastomer assembly, and a splined bushing assembly. The universal flywheel connecting plate assembly consists of a flywheel connecting plate and a first fastening bolt. The flywheel connecting plate has multiple sets of bolt through holes for connecting with flywheels of different specifications of diesel engines, and bolt holes for connecting the splined bushing assembly. The splined bushing assembly consists of a splined sleeve, a splined shaft, and a second fastening bolt. The second fastening bolt is located on the flange end face of the splined sleeve and connects to the bolt holes of the flywheel connecting plate. One end of the splined shaft engages with the splined sleeve, and the other end connects to the elastomer assembly. The elastomer assembly consists of an elastomer, a third fastening bolt, a fourth fastening bolt, a fifth fastening bolt, and a dynamometer transition plate. The elastomer is connected to the splined shaft via the third fastening bolt, and the elastomer is connected to the dynamometer transition plate via the fourth fastening bolt. The fifth fastening bolt is located on the dynamometer transition plate for connection and fixation with the dynamometer shaft head.

2. The flywheel coupling device for diesel engine testing according to claim 1, characterized in that, The flywheel connecting plate has a boss in the middle, and the flywheel connecting plate and the boss respectively serve as the outer circle stop corresponding to the inner stop on the flywheel.

3. The flywheel coupling device for diesel engine testing according to claim 1, characterized in that, The flywheel connecting plate has an inner circular hole, and the flange end face of the spline sleeve has an outer circular stepped stop that mates with the inner circular hole of the flywheel connecting plate.

4. The flywheel coupling device for diesel engine testing according to claim 1, characterized in that, The dynamometer transition plate is provided with an inner circular stop.

5. The flywheel coupling device for diesel engine testing according to claim 1, characterized in that, The elastomeric component is provided with a protective cover component.

6. The flywheel coupling device for diesel engine testing according to claim 5, characterized in that, The protective cover component includes an upper cover and a lower cover connected by a sixth fastening bolt, the lower cover being mounted on a support frame.

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