TWM520050U - Vehicle transmission device - Google Patents

Description

Vehicle transmission

The present invention relates to a vehicle transmission device, and more particularly to a vehicle transmission device suitable for a locomotive.

The power system and transmission are two important parts of the locomotive. The former is usually an internal combustion engine or a motor, while the latter has various designs such as a belt-type stepless transmission mechanism, a pure gear type mechanism or the like.

The locomotive engine transmission device of the prior art, the engine group and the transmission group are combined with each other, and then a fixed assembly is formed, which is assembled on the frame, and a suspension point is fixed on the vehicle body at the front, and the rear of the transmission group Standing together with the rear wheel and the rear shock absorber group, when the rear wheel moves up and down, the entire engine group and the transmission group also follow the swing, so the space required for the engine body and the transmission group body of the engine group needs to be large. In order to accommodate the relevant institutions, and the related parts need to be very complicated and complicated, resulting in considerable assembly inconvenience and increased probability of damage to the parts, the combination has the convenience, practicability and durability of the transmission. It is quite unfavorable, and it also has a very negative impact on vehicle vibration and ride comfort.

The assembly mode of the engine and transmission of the locomotive is as shown in Figure 1. The schematic diagram of the locomotive 90 is shown in Figure 1. The crankcase of the engine block is locked with the casing of the accommodating transmission group, and then the cylinder block of the engine is locked. Attached to the link, the engine is suspended from the frame at a single point, and the crankcase is connected to the shock absorber. Therefore, when the rear wheel moves up and down, the entire engine, the crankcase and the gearbox are swung with each other. The lifting point is a pivot point.

In the above assembly mode, according to the general physical principle, the inertia of the heavy object is also large, so the above-mentioned conventional design makes the stability of the whole vehicle greatly negatively affected when the vehicle is walking, and also means that the rider does not easily control and increases the safety. doubt. In addition, if the above-mentioned prior art is adopted, it is necessary to reserve the space for the engine to oscillate with the casing accommodating the transmission group, so that the elasticity of the other component configurations is lost, and obviously, the rocking motion also accelerates the damage of the related device. Not very ideal, there is still room for improvement.

The reason for the creator is that, in the spirit of actively inventing and creating, he thought of a "vehicle transmission device" that can solve the above problems, and finally completed the new model after several research experiments.

The main purpose of the present invention is to provide a vehicle transmission device, which can effectively improve the problems caused by the prior art by combining the engine group and the transmission group, and can assemble the engine and the whole vehicle. It is smoother and simpler in application and application. The overall structure is not only simpler for the arrangement of parts, but also helpful for the convenience of assembly engineering, the configuration of parts space and the durability of use. The vehicle vibration and ride comfort are also very helpful and improved.

To achieve the above object, the vehicle transmission of the present invention is mounted on a frame including: an engine block, a transmission group and a rear rocker device. Wherein, the engine group is fixed on the frame, the engine group has an engine and a crankcase; the transmission group is connected with one of the engine crankshafts; the rear rocker device has a rear rocker box body and an arm, the transmission group capacity The first rocker arm body is connected to the rear rocker box body, and the second end of the arm is pivotally connected to a rear wheel axle, thereby, The crankshaft of the engine oscillates as a center of rotation.

The second end of the arm may further have a protrusion, and the protrusion is provided with a circular hole for fixing and locking a shock absorber.

At least one rib may be disposed between the arm and the rear rocker box, and the ribs may increase the rigidity of the rear rocker box and the arm as a whole.

The transmission set may include a stepless shifting mechanism, and the stepless shifting mechanism is coupled to the crankshaft. Moreover, the above transmission group may further include a gear transmission assembly, and the gear transmission assembly is coupled to the stepless shifting mechanism and the rear axle. In addition, the above-mentioned stepless shifting mechanism may be a belt type stepless shifting mechanism.

A clutch may be further disposed between the stepless shifting mechanism and the gear transmission assembly, and the clutch may selectively transmit the rotational power of the stepless shifting mechanism to the gear transmission assembly.

Please refer to FIG. 2 and FIG. 3 , which are respectively a side view and a cross-sectional view of a vehicle transmission device according to a preferred embodiment of the present invention. The vehicle transmission device of the present embodiment is mounted on a frame 20, and the vehicle transmission device includes: an engine block 40, a transmission group 50, and a rear rocker device 60. The engine block 40 includes an engine 41 and a crankcase 46. The engine 41 is substantially composed of a cylinder head 42, a cylinder head 43, a cylinder block 44 and a crankshaft 45. The cylinder head 42 is coupled to the top of the cylinder head 43 and the cylinder. The body 44 is joined at its bottom to the bottom of the cylinder head 43.

The crankcase 46 is fixedly coupled to the bottom of the cylinder block 44 in a locking manner. Two bearings 461, 462 are embedded in the crankcase 46, and the crankshaft 45 is mounted on the two bearings 451, 452. In addition, the transmission unit 50 is coupled to the crankshaft 45 of the engine 41 for transmitting the rotational power of the crankshaft 45.

The rear rocker arm assembly 60 includes a rear rocker arm body 61 and an arm 66. The transmission group 50 is received in the rear rocker arm housing 61. The transmission unit 50 has a stepless speed change mechanism 51, a gear transmission assembly 52 and A clutch 53. The stepless speed change mechanism 51 is connected to the crankshaft 45 of the engine 41, the clutch 53 is disposed between the stepless speed change mechanism 51 and the gear transmission assembly 52, and the clutch 53 is used for selectively transmitting the rotational power of the stepless speed change mechanism 51. To the gear transmission assembly 52, the gear transmission assembly 52 is coupled to the rear axle 70 of the vehicle for retransmitting the rotational power of the stepless shifting mechanism 51 to the rear axle 70 to drive the vehicle rear wheel 71 forward. In the present embodiment, the stepless speed change mechanism 51 is a belt type stepless speed change mechanism 51.

As shown, the first end of the arm 66 is coupled to the rear rocker housing 61. The second end of the arm 66 is pivotally coupled to the rear axle 70, and the rear axle 70 is coupled to the rear wheel 71. In addition, the second end of the arm 66 has a protrusion 67, and the protrusion 67 is provided with a circular hole 671 for fixing the lock to the shock absorber 75. In the present embodiment, two ribs 68 are provided between the arm 66 and the rear rocker box 61. The two ribs 68 can be used to increase the overall rigidity of the arm 66 and the rear rocker box 61, and the arm 66 It is a long strip of steel.

After the assembly of this embodiment is completed, the engine 41 is suspended from the frame 20 by the cylinder block 44, such as the suspension point P1 in FIG. The crankcase 46 is also suspended from the frame 20, as shown in Fig. 2, which is different from the suspension points P2, P3 of the suspension point P1.

In this embodiment, the engine group 40 and the transmission group 50 are combined in a separate manner, which can effectively improve the problems caused by the prior art, and can make the engine 41 and the whole vehicle assembled and applied. In order to be smooth and simple, the overall structure is not only simpler for the arrangement of parts, but also helpful for the convenience of assembly engineering, the configuration of parts space and the durability of use. Further, when the vehicle is running, the rear rocker arm unit 60 swings with the crankshaft 45 as a center of rotation, and is also greatly assisted and improved in terms of vehicle vibration and riding comfort.

20‧‧‧ frame
40‧‧‧Engine Group
41‧‧‧ Engine
42‧‧‧Cylinder head
43‧‧‧Cylinder head
44‧‧‧Cylinder block
45‧‧‧ crankshaft
451, 452 ‧ ‧ bearings
46‧‧‧ crankcase
461,462‧‧‧ bearing
50‧‧‧ Transmission Group
51‧‧‧Stepless speed change mechanism
52‧‧‧ Gear Drive Components
53‧‧‧Clutch
60‧‧‧ rear rocker device
61‧‧‧Back rocker box
66‧‧‧ Arm
67‧‧‧Bumps
671‧‧‧ round hole
68‧‧‧ Ribs
70‧‧‧ Rear axle
71‧‧‧ Rear wheel
75‧‧‧ Shock absorbers
90‧‧‧ locomotive
P1, P2, P3‧‧‧ suspension points

Figure 1 is a side view of a conventional locomotive transmission. 2 is a side elevational view of a vehicle transmission of a preferred embodiment of the present invention. 3 is a cross-sectional view of a vehicle transmission of a preferred embodiment of the present invention.

20‧‧‧ frame

42‧‧‧Cylinder head

43‧‧‧Cylinder head

44‧‧‧Cylinder block

60‧‧‧ rear rocker device

61‧‧‧Back rocker box

66‧‧‧ Arm

67‧‧‧Bumps

671‧‧‧ round hole

68‧‧‧ Ribs

71‧‧‧ Rear wheel

75‧‧‧ Shock absorbers

P1, P2, P3‧‧‧ suspension points

Claims (7)

A vehicle transmission device is mounted on a frame, comprising: an engine block fixed to the frame, including an engine and a crankcase; a transmission group connected to a crankshaft of the engine; and a rear The rocker arm device comprises a rear rocker box body and an arm, the transmission group is received in the rear rocker arm box, and one of the first ends of the arm is connected to the rear rocker arm box, one of the arms The second end is pivotally connected to a rear axle, and the rear rocker device swings with the crankshaft as a center of rotation. The vehicle transmission device of claim 1, wherein the second end of the arm has a protrusion, and the protrusion is provided with a circular hole for fixing and locking a shock absorber. The vehicle transmission device of claim 1, wherein at least one rib is provided between the arm and the rear rocker arm case for increasing rigidity. The vehicle transmission of claim 1, wherein the transmission assembly includes a stepless shifting mechanism coupled to the crankshaft. The vehicle transmission device of claim 4, wherein the transmission set further comprises a gear transmission assembly coupled to the stepless shifting mechanism and the rear axle. The vehicle transmission of claim 5, wherein a clutch is disposed between the stepless shifting mechanism and the gear transmission assembly. The vehicle transmission device of claim 4, wherein the stepless speed change mechanism is a belt type stepless speed change mechanism.