TWI737154B - Locomotive rear rocker arm configuration - Google Patents

Abstract

The present invention relates to a rear rocker arm configuration of a locomotive. The locomotive has a power unit. The rear end of the power unit is pivoted with a rear rocker arm. The power unit has a cylinder part and a transmission part. A belt stepless speed change system driven by the crankshaft. The belt stepless speed change system has a driving wheel, a driven wheel, and a driving belt connecting the driving wheel and the driven wheel. The center of the driven wheel is provided with a driving shaft. Drive a reduction gear set, the reduction gear set can drive a power output shaft, the power output shaft is provided with a power output wheel; the rear rocker arm has a first pivot part, a second pivot part and a rear wheel shaft, the The rear wheel shaft is pivotally provided with a rear wheel and a rear-wheel drive wheel, and a transmission member is provided between the rear-wheel drive wheel and the power output wheel; Is pivoted on the transmission part, the drive shaft system passes through the first pivot part of the rear rocker arm, the rear rocker arm takes the center of the drive shaft as the vertical swing center, and the power output shaft is connected to the axis The center is coaxial; thereby, the rear rocker arm can be moved toward the front of the vehicle body, so that the wheelbase between the front wheel and the rear wheel can be reduced, and the locomotive can be miniaturized.

Description

Locomotive rear rocker arm configuration

The present invention relates to a locomotive rear rocker arm configuration, in particular to a locomotive rear rocker arm configuration that can move the rear rocker arm toward the front of the car body, thereby reducing the wheelbase between the front wheels and the rear wheel, and further miniaturizing the locomotive.

As shown in Figure 1, a locomotive with a rear swing arm, such as the patent case No. I359766 "Structure of a scooter locomotive", is connected to one side of the crankshaft 12 of the engine unit 11 of the scooter locomotive 1 The belt CVT system 13 driven by the crankshaft 12, the belt CVT system 13 is connected by the drive shaft 131 and is driven by the drive shaft 131, the deceleration and clutch system 14, the deceleration and clutch system 14 can drive The output shaft 15 is provided with a driving wheel 151. The driving wheel 151 is driven by a belt-shaped transmission member 16 to drive a driving wheel 171 provided on the rear wheel 17, and the rear wheel 17 is pivoted to a rear rocker arm At the rear end of 18, the front end of the rear rocker arm 18 is pivoted on the outside of the output shaft 15.

The transmission arrangement of the I359766 "Structure of Scooter Type Locomotive" patent, from the front of the car body to the rear of the car body are the crankshaft 12, the driven shaft 131, the output shaft 15, the rear rocker arm 18, and the rear wheel. 17. As a result, the wheelbase between the front wheel (not shown in the drawing) of the scooter locomotive 1 and the rear wheel 17 has become larger. More specifically, the No. I359766 "Structure of the scooter locomotive" The transmission configuration of the patent has caused the front and rear length of the scooter locomotive 1 to increase, and therefore the scooter locomotive 1 is forced to increase in size.

Therefore, how to provide a locomotive rear rocker arm configuration to shorten the wheelbase of the front and rear wheels of the locomotive, thereby miniaturizing the locomotive, has become an urgent issue for the locomotive manufacturer.

The main purpose of the present invention is to provide a rear rocker arm configuration for locomotives, which can overcome the increase in the wheelbase between the front and rear wheels caused by conventional locomotives with rear rocker arms, thereby making the locomotive forced to enlarge.

To this end, the present invention requests the first main technical means, which is to provide a locomotive rear rocker arm configuration, the locomotive has a power unit, the rear end of the power unit is pivoted with a rear rocker arm; the power unit has a cylinder part and The transmission part has a crankshaft, a belt CVT system that can be driven by the crankshaft, and the belt CVT system has a driving wheel, a driven wheel, and a driving belt connecting the driving wheel and the driven wheel. The center of the moving wheel is provided with a drive shaft, the drive shaft can drive a reduction gear set, the reduction gear set can drive a power output shaft, the power output shaft is provided with a power output wheel; the rear rocker arm has a first pivot part, a first pivot Two pivotal parts and a rear wheel shaft are pivoted on the rear wheel shaft and a rear wheel and a rear wheel drive wheel are pivoted. A transmission member is provided between the rear wheel drive wheel and the power output wheel; A pivotal portion and the second pivotal portion are pivoted on the transmission portion, the drive shaft passes through the first pivotal portion of the rear rocker arm, and the rear rocker arm is centered on the axis of the drive shaft The center swings up and down, and the power output shaft is coaxial with the center of the axis.

For this reason, the present invention requests the second main technical means, which is to provide a locomotive rear rocker arm configuration, the power output shaft is coaxial with the drive shaft, and the power output shaft passes through the second pivot of the rear rocker arm Department.

For this reason, the present invention requests the third main technical means, which is to provide a rear rocker arm configuration of a locomotive. A support member, the first pivotal portion of the rear rocker arm is pivotally connected to the first support member; the transmission box is provided with a second support member, and the second pivotal portion of the rear rocker arm is pivotally connected to On the second support.

To this end, the present invention requests the fourth main technical means, which is to provide a locomotive rear rocker arm configuration, the first pivotal part of the rear rocker arm and the first support member are located in the reduction gear group chamber of the transmission box Between the belt and the CVT system room.

For this reason, the present invention requests the fifth main technical means, which is to provide a locomotive rear rocker arm configuration, the second pivot part of the rear rocker arm is pivotally connected to the second support, and the second pivot The connecting part is located between the power output wheel of the transmission part and the transmission box.

For this reason, the present invention requests the sixth main technical means, which is to provide a locomotive rear rocker arm configuration, one side of the transmission box is covered with an outer cover to form a belt continuously variable transmission system room, the belt continuously variable transmission system A belt stepless speed change system of the transmission part is arranged in the chamber; a connecting cover is provided between the belt stepless speed change system chamber and the first pivoting part.

For this reason, the present invention requests the seventh main technical means, which is to provide a rear rocker arm configuration of a locomotive, the connecting cover has a perforation for the drive shaft of the transmission part to pass through.

For this reason, the present invention requests the 8th main technical means, which is to provide a locomotive rear rocker arm configuration, the inner periphery of the perforation is provided with a step-shaped accommodating part, and the accommodating part is provided with a dust cover.

For this reason, the present invention requests the ninth main technical means, which is to provide a rear rocker arm configuration of a locomotive, and the connecting cover is locked on the outer cover.

For this reason, the present invention requests the tenth main technical means, which is to provide a rear rocker arm configuration of a locomotive, and the dust cover is located between the connecting cover and the first pivotal part of the rear rocker arm.

The effect that the present invention can achieve by requesting the first main technical means is that the rear rocker arm can be moved toward the front of the vehicle body, thereby reducing the wheelbase of the front wheel and the rear wheel, thereby enabling the locomotive miniaturization.

The effect that the present invention can achieve by requesting the second main technical means is to ensure that the rear rocker arm is swung up and down with the axis center of the drive shaft as the vertical swing center, and the power output shaft is coaxial with the axis center. In turn, the locomotive can be miniaturized.

The effect that the present invention can achieve by requesting the third main technical means is to ensure that the rear rocker arm is swung up and down with the axis center of the drive shaft as the vertical swing center, and the axis center is coaxial with the drive shaft.

The effect that the present invention can achieve by requesting the fourth main technical means is to make the overall configuration of the power unit and the rear rocker arm more compact.

The effect achieved by the present invention by requesting the fifth main technical means is that it can ensure that the rear rocker arm is swung up and down with the axis center of the drive shaft as the vertical swing center, and the power output shaft is coaxial with the axis center.

The effect that the present invention can achieve by requesting the 6th to 7th main technical means is to ensure the operability of the reduction gear set and the belt continuously variable transmission system.

The effect that the present invention can achieve by requesting the 8th to 10th main technical means is that it can effectively prevent external moisture or dust from entering the first pivotal portion and the belt CVT system room, thereby avoiding the second The bearing of a pivot part is corroded by external moisture or dust, Therefore, the swingability of the rear rocker arm can be ensured, and the operability of the belt continuously variable transmission system can be ensured.

1: Scooter type locomotive

11: Engine unit

12: crankshaft

13: Belt stepless speed change system

131: Driven shaft

14: Deceleration and clutch system

15: output shaft

151: drive wheel

16: Transmission parts

17: rear wheel

171: Drive Wheel

18: Rear swing arm

2: locomotive

3: Frame unit

31: Head Tube

32: Steering mechanism

33: Drop tube department

34: Pedal tube

341: Pedal Horizontal Tube

35: Side frame

351: Ascending Section

352: Extension

353: Auxiliary Tube

354: Extension

4: seat cushion

5: Power unit

51: Cylinder

511: cylinder head cover

512: cylinder head

513: Cylinder body

52: Transmission Department

52a: right box

52b: left box

52c: Outer cover

53: Gearbox

53a: crankshaft chamber

53b: Reduction gear group room

53c: Belt CVT system room

54: crankshaft

541: connecting rod

542: Piston

55: Reduction gear set

56: Belt stepless speed change system

561: Driving Wheel

562: driven wheel

563: drive belt

564: drive shaft

57: PTO shaft

571: power output wheel

58: The first support

59: second support

6: Rear swing arm

61: The first pivot

62: second pivot

63: rear axle

7: Rear-wheel drive wheels

8: Transmission parts

9: Connection cover

91: Piercing

92: accommodating part

93: Dust cover

A: Fork unit

C: storage box

E: electrical parts

FW: front wheel

RW: Rear wheel

P: Footrest

T: Fuel tank

Y: axis center

Figure 1 is a schematic top view of the rear rocker arm of a conventional scooter locomotive.

Figure 2 is a schematic side view of the locomotive of the present invention.

Figure 3 is a cross-sectional view of the power unit of the locomotive of the present invention.

Figure 4 is a cross-sectional view of the power unit and the rear rocker arm of the locomotive of the present invention.

Figure 5 is an exploded view of the connecting cover of the power unit of the locomotive of the present invention.

In order to make it easier for your examiner to understand the structure of the present invention and the effects that can be achieved, the following descriptions are provided in conjunction with the diagrams;

First, please refer to FIG. 2, the locomotive 2 has a frame unit 3, a seat cushion 4 and a power unit 5 provided on the frame unit 3.

As shown in Figure 2, the left and right sides of the vehicle body in the following description are based on the assumption that after the driver rides on the scooter 2, the driver’s left hand side is the left side, and the driver’s right hand side is the right side. bright. The front of the frame unit 3 is pivotally provided with a head pipe portion 31, above the head pipe portion 31 is connected a steering mechanism 32, the head pipe portion 31 is connected to the rear of the vehicle body with a down pipe portion 33, the down pipe portion 33 is below A pair of left and right foot tube portions 34 extending toward the rear of the vehicle body and slightly horizontal are connected, and a foot cross tube 341 is connected between the end of the down tube portion 33 and the pair of left and right foot tube portions 34; The foot tube portion 34 extends toward the rear of the vehicle with a pair of left and right side frame portions 35. The side frame portion 35 has an ascending section 351 adjacent to the foot tube portion 34 and an extension section 352 located at the rear of the vehicle body. Between the ascending section 351 and the extending section 352 of the frame portion 35 is provided A pair of left and right auxiliary pipes 353, and a pair of left and right extension pieces 354 extending toward the rear of the vehicle body at the ascending section 351 adjacent to the foot tube portion 34; The front fork unit A formed by the shocker has a front wheel FW pivoted at the lower end of the front fork unit A.

As shown in Figure 2, the slightly horizontal foot tube portion 34 of the frame unit 3 is provided with a slightly flat footrest P. The footrest P forms a flat footrest for the driver. Feet; in the internal space defined between the left and right pair of slightly horizontal foot tube portions 34, a fuel tank T for supplying the power unit 5 for fuel storage for explosion is installed, and the power unit 5 is connected The fuel tank T is arranged on the frame unit 3 and is further toward the rear of the vehicle body.

As shown in Figure 2, the side frame portion 35 is provided with a seat cushion 4 above the extension section 352 for the driver to ride, and the side frame section 35 is provided on the extension section 352 with a storage under the seat cushion 4 Box C; the power unit 5 is fastened to the auxiliary tube 353 of the side frame portion 35 and the extension piece 354, and the power unit 5 is fixed to the frame unit 3 in a non-swinging manner.

As shown in Figures 2 and 3, the power unit 5 has a cylinder portion 51 and a transmission portion 52. The cylinder portion 51 extends toward the front of the vehicle body in a slightly inclined manner and partially protrudes from the ascending section 351 of the side frame portion 35. In addition, it means that the extending portion of the cylinder portion 51 toward the front of the vehicle body extends more toward the front of the vehicle body than the rising section 351 of the side frame portion 35; the cylinder portion 51 extends from the front of the vehicle body to the rear of the vehicle body, in order There are a cylinder head cover 511, a cylinder head 512, and a cylinder body 513. One end of the cylinder body 513 (facing the rear end of the vehicle body) is connected to the transmission part 52, and the cylinder head 512 is connected to the cylinder body 513 away from the transmission part 52. On the other end of the cylinder head 511, the cylinder head cover 511 is set on the other end of the cylinder head 512 away from the end connected to the cylinder body 513.

As shown in Figures 2 and 3, the transmission part 52 is connected to the cylinder body 513 of the cylinder part 51 and is far from the other end of the cylinder head 512; the transmission part 52 consists of at least a right box body 52a and a left box body 52b. To form a transmission box 53 (the left and right sides are based on the driver's right hand as the right side and the left hand as the left side, the same below). The transmission box 53 has a crankshaft chamber 53a for a crankshaft 54 and a gear set for reduction gears. 55 accommodates the reduction gear group chamber 53b, and a belt continuously variable transmission system chamber 53c formed by an outer cover 52c covering the outside of the right case 52a. The belt continuously variable transmission system chamber 53c is provided with a belt continuously variable transmission system chamber 53c. System 56.

As shown in Figures 2 and 3, the crankshaft 54 in the crankshaft chamber 53a of the transmission box 53 is connected with a piston 542 through a connecting rod 541 to extend into the cylinder body 513, whereby the explosion force of the cylinder part 51 during operation can be increased. Push the piston 542 to drive the crankshaft 54 to rotate; the two sides of the crankshaft 54 extend toward the transmission box 53, the rear end (left side) is connected to the electric motor E (generator, etc.), and the other end (right side) extends into the belt without section The transmission system chamber 53c is connected to the belt CVT system 56 so that the crankshaft 54 can drive the belt CVT system 56 to operate.

As shown in Figures 2, 3 and 4, the belt CVT system 56 has a driving wheel 561 that can be driven by the crankshaft 54, a driven wheel 562 that can be driven by the driving wheel 561, and a driven wheel 562 connected to the driving wheel 561 The driving belt 563 between the driving wheel 562 and the driven wheel 562; after the driving wheel 561 is driven by the crankshaft 54, the driven wheel 562 is driven by the driving belt 563 to rotate infinitely variable speed. The center of the driven wheel 562 is provided with a drive Shaft 564, the drive shaft 564 extends from the belt CVT system chamber 53c into the reduction gear group chamber 53b, whereby the drive shaft 564 can drive the reduction gear group 55 located in the reduction gear group chamber 53b to act, the The reduction gear set 55 can drive a power output shaft 57 to act. The power output shaft 57 is coaxial with the drive shaft 564. The power output shaft 57 extends out of the transmission box 53 from the reduction gear chamber 53b. In other words, the power output shaft 57 extends out of the left box 52b and is connected to a power output wheel 571.

As shown in Figures 2, 3, and 4, a first support 58 and a second support 59 are provided on both sides of the transmission box 53. More specifically, the first support 58 is locked to the right box body. 52a, the second support 59 is locked on the left box 52b, the first support 58 and the second support 59 are pivoted with a rear rocker arm 6; the rear rocker arm 6 has two front ends A first pivoting portion 61 and a second pivoting portion 62 are provided. The rear end of the rear rocker arm 6 is provided with a rear wheel shaft 63 for the rear wheel RW to pivot; the first pivoting portion of the rear rocker arm 6 61 is pivotally connected to the first supporting member 58, which means that the driving shaft 564 passes through the first pivotal portion 61 and the first supporting member 58, so the first pivotal portion 61 of the rear rocker arm 6 And the first support 58 are located between the reduction gear chamber 53b of the transmission box 53 and the belt CVT system chamber 53c; the second pivotal portion 62 is pivotally connected to the second support 59, meaning That is, the power output shaft 57 passes through the second pivotal portion 62 and the second support 59, so the second pivotal portion 62 of the rear rocker arm 6 is pivotally connected to the second support 59, and The second pivot portion 62 is located between the power output wheel 571 of the transmission portion 52 and the transmission box 53, that is, the rear rocker arm 6 is rotatably connected by the first pivot portion 61 and the second pivot portion 62 Is pivoted on the transmission box 53, whereby the rear rocker arm 6 takes the axis center Y of the drive shaft 564 as the vertical swing center, and makes the power output shaft 57 coaxial with the axis center Y, and is connected to the rear wheel RW It swings up and down synchronously; the rear wheel RW is provided with a rear-wheel drive wheel 7, and the rear-wheel drive wheel 7 is connected with the power output wheel 571 on the power output shaft 57 by a transmission member 8 (belt or chain) , By which the power is lost The power output wheel 571 on the output shaft 57 drives the transmission member 8 to link the rear wheel drive wheel 7, so as to drive the rear wheel RW to rotate synchronously; another thing to mention is that the drive shaft 564 passes through the first pivot The connecting portion 61 and the first supporting member 58, the first pivoting portion 61 and the first supporting member 58 of the rear rocker arm 6 are located in the reduction gear chamber 53b of the transmission box 53 and the belt infinitely variable speed Between the system compartments 53c, the overall arrangement of the power unit 5 and the rear rocker arm 6 can be made compact by this.

As shown in Figures 3, 4, and 5, between the rear section of the transmission part 52 and the outer cover 52c, that is, a connecting cover 9 is provided between the right box body 52a and the outer cover 52c. Furthermore, the The connecting cover 9 is locked on the outer cover 52c; the connecting cover 9 has a perforation 91, the inner periphery of the perforation 91 is provided with a step-shaped accommodating portion 92, the accommodating portion 92 is provided with a dust cover 93, the The first pivotal portion 61 of the rear rocker arm 6 penetrates through the perforation 91. More specifically, the dust cover 93 is located on the outer periphery of the first pivotal portion 61 of the rear rocker arm 6 and the perforation 91 The dust cover 93 is located between the connecting cover 9 and the first pivoting portion 61 of the rear rocker arm 6, because the dust cover 93 is located between the first pivoting portion 61 and the through hole 91, thereby effectively preventing external moisture or dust from entering the first pivotal portion 61 and the belt CVT system chamber 53c, thereby preventing the bearing of the first pivotal portion 61 from being affected by external moisture or Dust erosion can ensure the swingability of the rear rocker arm 6 and the operability of the belt CVT system 56.

The main effect of the present invention is that the locomotive 2 has a power unit 5, the rear end of the power unit 5 is pivoted with a rear rocker arm 6; the power unit 5 has a cylinder portion 51 and a transmission portion 52, the transmission portion 52 It has a crankshaft 54, a belt continuously variable transmission system 56 that can be driven by the crankshaft 54, and the belt continuously variable transmission system 56 has a driving wheel 561, a driven The wheel 562 and the driving belt 563 connecting the driving wheel 561 and the driven wheel 562 are provided with a drive shaft 564 at the center of the driven wheel 562. The drive shaft 564 can drive a reduction gear set 55, and the reduction gear set 55 can drive a power Output shaft 57, the power output shaft 57 is provided with a power output wheel 571; the rear rocker arm 6 has a first pivot portion 61, a second pivot portion 62, and is provided with a rear wheel shaft 63, the rear wheel shaft 63 is pivoted with The rear wheel RW and the rear-wheel drive wheel 7 are provided with a transmission member 8 between the rear-wheel drive wheel 7 and the power output wheel 571; the rear rocker arm 6 is pivotally connected to the second through the first pivot portion 61 The portion 62 is pivoted on the transmission portion 52, the drive shaft 564 passes through the first pivot portion 61 of the rear rocker arm 6, and the rear rocker arm 6 swings up and down with the axis Y of the drive shaft 564 as the Center, and the power output shaft 57 is coaxial with the axis center Y; thereby, the rear rocker arm 6 can be moved toward the front of the vehicle body, so that the wheelbase between the front wheel FW and the rear wheel RW can be reduced, and the locomotive 2 miniaturization.

The second effect of the present invention is that the power output shaft 57 is coaxial with the drive shaft 564, and the power output shaft 57 passes through the second pivotal portion 62 of the rear rocker arm 6; thereby, the The rear rocker arm 6 takes the axial center Y of the drive shaft 564 as the vertical swing center, and the power output shaft 57 is coaxial with the axial center Y, so that the locomotive 2 can be miniaturized.

The third effect of the present invention is that, by the transmission part 52, a transmission box 53 is formed by at least a right box body 52a and a left box body 52b. The transmission box 53 is provided with a first support member 58, and the rear rocker arm The first pivotal portion 61 of 6 is pivotally connected to the first supporting member 58; thereby, it can be ensured that the rear rocker arm 6 takes the axis center Y of the power output shaft 57 as the vertical swing center, and the axis center Y It is coaxial with the drive shaft 564.

The fourth effect of the present invention is that the first pivotal portion 61 and the first supporting member 58 of the rear rocker arm 6 are located between the reduction gear chamber 53b of the transmission box 53 and the skin Between the room 53c with a continuously variable transmission system; thereby, the overall configuration of the power unit 5 and the rear rocker arm 6 can be more compact.

The fifth effect of the present invention is that the second pivotal portion 62 of the rear rocker arm 6 is pivotally connected to the second support 59, and the second pivotal portion 62 is located at the power of the transmission portion 52 Between the output wheel 571 and the transmission box 53; thereby, it can be ensured that the rear rocker arm 6 takes the axis center Y of the drive shaft 564 as the vertical swing center, and the power output shaft 57 is coaxial with the axis center Y.

The sixth effect of the present invention is that an outer cover 52c is provided on one side of the transmission box 53 to form a belt CVT system chamber 53c, and the belt CVT system chamber 53c is provided with the belt of the transmission part 52. A step speed change system 56; a connecting cover 9 is provided between the belt CVT system chamber 53c and the first pivoting portion 61; the connecting cover 9 has a perforation 91, and the perforation 91 can be used for the transmission portion 52 The drive shaft 564 is installed; thereby, the operability of the reduction gear set 55 and the belt CVT system 56 can be ensured.

The seventh effect of the present invention is that the connecting cover 9 has a perforation 91 for the drive shaft 564 of the transmission part 52 to pass through; thereby, it can ensure that the reduction gear set 55 and the belt have no section. The operability of the transmission system 56.

The eighth effect of the present invention is that a stepped accommodating portion 92 is provided on the inner periphery of the perforation 91, and the accommodating portion 92 is provided with a dust cover 93; thereby, it can effectively prevent external moisture or dust from entering the first A pivoting portion 61 and the belt CVT system chamber 53c, thereby preventing the bearing of the first pivoting portion 61 from being corroded by external moisture or dust, thereby ensuring the swingability of the rear rocker arm 6 and ensuring The operability of the belt CVT system 56.

The ninth effect of the present invention is that the connecting cover 9 is locked to the outer cover 5 2c; This can effectively prevent external moisture or dust from entering the first pivotal portion 61 and the belt CVT system chamber 53c, thereby avoiding the first pivotal portion 61 bearing by external moisture or dust Corrosion can ensure the swingability of the rear rocker arm 6 and the operability of the belt CVT system 56.

The tenth effect of the present invention is that the dust cover 93 is located between the connecting cover 9 and the first pivotal portion 61 of the rear rocker arm 6, thereby effectively preventing external moisture or dust from entering the first pivoting portion 61 In the pivotal portion 61 and the belt CVT system chamber 53c, the bearing of the first pivotal portion 61 is prevented from being corroded by external moisture or dust, thereby ensuring the swingability of the rear rocker arm 6 and ensuring the The operability of the belt CVT system 56.

In summary, with the above structure, the present invention can improve the deficiencies of conventional knowledge and achieve the desired purpose. It has indeed improved the efficacy compared with the habitual users, and it has shown that it has the requirements of novelty, practicability and advancement. It is proposed according to law. For the application of invention, I would like to ask your examiner for a detailed review, and I would like to grant you the approval of the patent.

5: Power unit

51: Cylinder

511: cylinder head cover

512: cylinder head

513: Cylinder body

52: Transmission Department

52a: right box

52b: left box

52c: Outer cover

53: Gearbox

53a: crankshaft chamber

53b: Reduction gear group room

53c: Belt CVT system room

54: crankshaft

541: connecting rod

542: Piston

55: Reduction gear set

56: Belt stepless speed change system

561: Driving Wheel

562: driven wheel

563: drive belt

564: drive shaft

57: PTO shaft

571: power output wheel

58: The first support

59: second support

6: Rear swing arm

61: The first pivot

62: second pivot

8: Transmission parts

9: Connection cover

91: Piercing

93: Dust cover

E: electrical parts

RW: Rear wheel

Y: axis center

Claims (10)

A rear rocker arm configuration of a locomotive. The locomotive has a power unit. The rear end of the power unit is pivotally provided with a rear rocker arm. The power unit has a cylinder part and a transmission part. A belt stepless speed change system. The belt stepless speed change system has a driving wheel, a driven wheel, and a driving belt connecting the driving wheel and the driven wheel. The center of the driven wheel is provided with a drive shaft that can drive a reduction gear set , The reduction gear set can drive a power output shaft, the power output shaft is provided with a power output wheel; the rear rocker arm has a first pivot part, a second pivot part and is provided with a rear wheel shaft, the rear wheel shaft is pivoted There are rear wheels and rear-wheel drive wheels, and a transmission part is provided between the rear-wheel drive wheels and the power output wheels; the rear rocker arm is pivoted by the first pivot part and the second pivot part rotatably It is arranged on the transmission part, and is characterized in that: the drive shaft system passes through the first pivot part of the rear rocker arm, the rear rocker arm takes the center of the drive shaft as the vertical swing center, and the power output shaft and The center of the axis is coaxial. According to the locomotive rear rocker arm configuration described in item 1 of the scope of patent application, the power output shaft is coaxial with the drive shaft, and the power output shaft passes through the second pivotal portion of the rear rocker arm. For example, the locomotive rear rocker arm configuration described in item 1 of the scope of patent application, wherein the transmission part is formed by at least a right box body and a left box body to form a transmission box, the transmission box is provided with a first support member, and the rear The first pivotal part of the rocker arm is pivotally connected to the first support member; the transmission box is provided with a second support member, and the second pivotal part of the rear rocker arm is pivotally connected to the second support member superior. The locomotive rear rocker arm configuration described in item 3 of the scope of patent application, wherein the first pivotal portion of the rear rocker arm and the first support are located between the reduction gear group chamber of the transmission box and the belt without a section Between the transmission system rooms. The locomotive rear rocker arm configuration described in item 3 of the scope of patent application, wherein the rear rocker arm The second pivotal part is pivotally connected to the second support, and the second pivotal part is located between the power output wheel of the transmission part and the transmission box. For example, the locomotive rear rocker arm configuration described in item 3 of the scope of patent application, wherein an outer cover is provided on one side of the transmission box to form a belt continuously variable transmission system room, and the belt continuously variable transmission system room is provided with the transmission The belt stepless speed change system of the part; a connecting cover is provided between the belt stepless speed change system chamber and the first pivotal part. According to the locomotive rear rocker configuration described in item 6 of the scope of patent application, the connecting cover has a perforation for the drive shaft of the transmission part to pass through. For the locomotive rear rocker configuration described in item 7 of the scope of patent application, wherein the inner periphery of the perforation is provided with a step-shaped accommodating part, and the accommodating part is provided with a dust cover. For the locomotive rear rocker configuration described in item 6 of the scope of patent application, the connecting cover is locked on the outer cover. The locomotive rear rocker arm configuration described in item 7 of the scope of patent application, wherein the dust cover is located between the connecting cover and the first pivotal portion of the rear rocker arm.

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