TWM610117U - Configuration structure of rear rocking arm in motorcycle - Google Patents

Abstract

This creation is related to a rear rocker arm configuration structure 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. The transmission part has at least one right The box body and a left box body form a transmission box. The transmission box has a crankshaft chamber provided with a crankshaft and a reduction gear group chamber provided with a reduction gear set. The right box body is covered with an outer cover to form a belt CVT system room, the belt CVT system room is equipped with a belt CVT system; the belt CVT system is driven by a crankshaft, the belt CVT system has a driving wheel, a driven wheel and connected to the driving wheel And the driving belt of the driven wheel, the center of the driven wheel is provided with a drive shaft, the drive shaft can drive the 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 The rocker arm has a first pivot part, a second pivot part, and a rear axle. The rear axle is pivotally provided with a rear wheel and a rear-wheel drive wheel, and a transmission is provided between the rear-wheel drive wheel and the power output wheel. The rear rocker arm is pivoted on the transmission box by the first pivot portion and the second pivot portion, the first pivot portion is located in the reduction gear chamber and the belt continuously variable transmission system Between the chambers; thereby making the overall configuration of the transmission part and the rear rocker arm compact.

Description

Locomotive rear rocker arm configuration structure

This creation is related to a locomotive rear rocker arm configuration structure, especially a locomotive rear rocker arm configuration structure that can make the overall configuration of the locomotive transmission part compact.

As shown in Figure 1, a locomotive with a rear rocker arm, such as the patent 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 figure) of the scooter-type locomotive 1 and the rear wheel 17 is increased, resulting in an increase in the size of the scooter-type locomotive 1.

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

The main purpose of this creation is to provide a rear rocker arm configuration structure for locomotives, which can overcome the looseness of the overall configuration of the engine unit caused by conventional locomotives with rear rocker arms, so that the locomotive is forced to become larger.

For this reason, the first main technical means of this creative request is to provide a rear rocker arm configuration structure for 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 the transmission part, the transmission part forms a transmission case with at least a right case and a left case. The transmission case has a crank chamber provided with a crankshaft, a reduction gear group chamber provided with a reduction gear group, and the right case An outer cover is provided on the outside of the body to form a belt CVT system room, the belt CVT system room is equipped with a belt CVT system; the belt CVT system is driven by a crankshaft, 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 driven wheel is provided with a drive shaft, the drive shaft can drive the reduction gear set, the reduction gear set can drive a power output shaft, the 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 rear wheel shaft is pivoted with a rear wheel and a rear wheel drive wheel, and the rear wheel drives A transmission member is provided between the wheel and the power output wheel; the rear rocker arm is pivoted on the transmission box through the first pivotal portion and the second pivotal portion, and the first pivotal portion is located at the Between the reduction gear group room and the belt CVT system room.

Therefore, the second main technical means of this creation request is to provide a locomotive rear rocker arm configuration structure. The rear rocker arm is centered on the axis of the drive shaft as the vertical swing center, and the power output shaft is aligned with the axis. The central axis is coaxial.

For this reason, the third main technical means of this creation request is to provide a rear rocker arm configuration structure of a locomotive. The transmission part is provided with a first support and a second support on both sides of the transmission box. The first pivotal portion of the arm is pivotally connected to the first support member, and the second pivotal portion is pivotally connected to the second support member.

For this reason, the fourth main technical means of this creation request is to provide a rear rocker arm configuration structure of a locomotive, and the second pivot part is located between the power output wheel of the transmission part and the transmission box.

For this reason, the fifth main technical means of this creation request is to provide a rear rocker arm configuration structure of a locomotive, and a connecting cover is provided between the belt CVT system chamber and the transmission box.

For this reason, the sixth main technical means of this creation request is to provide a rear rocker arm configuration structure of a locomotive, the connecting cover has a perforation for the drive shaft of the transmission part to pass through.

For this reason, the seventh main technical means of this creation request is to provide a locomotive rear rocker arm configuration structure, 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 eighth main technical means of this creation request is to provide a rear rocker arm configuration structure of a locomotive, and the connecting cover is locked on the outer cover of the transmission box.

For this reason, the ninth main technical means of this creation request is to provide a locomotive rear rocker arm configuration structure, the dust cover is located between the connecting cover and the first pivotal part of the rear rocker arm.

The effect that this creation can achieve by requesting the first main technical means is in Yu: This can make the overall arrangement of the transmission part and the rear rocker arm compact.

The effect that this creation can achieve by requesting the second main technical means is to ensure that the rear rocker arm swings up and down with the axis center of the drive shaft, and the drive shaft is coaxial with the axis center, thereby The wheelbase between the front and rear wheels can be reduced, and the locomotive can be miniaturized.

The effect that this creation can achieve by requesting the 3rd to 4th main technical means is to make the overall configuration of the transmission part and the rear rocker arm compact.

The effect that this creation can achieve by requesting the 5th to 9th main technical means is that it can effectively prevent external water or dust from entering the first pivotal part and the belt CVT system room, thereby ensuring the The swing of the rear rocker arm and the operability of the belt CVT system are 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 diagram of the side view of the creative locomotive.

[Figure 3] is a cross-sectional view of the power unit of the locomotive.

[Figure 4] is a cross-sectional view of the power unit and rear rocker arm of this creative locomotive.

[Figure 5] is an exploded view of the connecting cover of the power unit of the locomotive.

In order to make it easier for your examiner to understand the structure of this creation and the effects that can be achieved, I would like to explain it with the diagrams as follows:

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

As shown in Figure 2, the left and right sides of the car 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. A pair of left and right auxiliary pipes 353 are provided between the ascending section 351 and the extension section 352 of the frame section 35, and a pair of left and right extensions are extended toward the rear of the vehicle body at the ascending section 351 adjacent to the pedal tube section 34. Setting member 354; The lower part of the head pipe portion 31 is pivotally provided with a front fork unit A composed of a front shock absorber, and the lower end of the front fork unit A is pivotally provided with a front wheel FW.

As shown in FIG. 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 to use. 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 further toward the rear of the vehicle body.

As shown in FIG. 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 and is provided 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 in a non-swinging manner Unit 3 on.

As shown in FIGS. 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 At the other end of the cylinder head 511, the cylinder head cover 511 is covered 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 has at least a right casing 52a and a left casing 52b. To form a transmission box 53 (the left and right sides are set with the right hand of the driver 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 outer side 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 to a piston 542 by a connecting rod 541 to extend into the cylinder body 513, whereby the explosion force of the cylinder portion 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 and the rear end (left side) is connected to the electric motor E (power generation) The other end (right side) extends into the belt CVT system chamber 53c and is connected to the belt CVT system 56, whereby the crankshaft 54 can drive the belt CVT system 56 to operate.

As shown in FIGS. 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 case 52b, and the power output shaft 57 extends out of the left case 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, and the first pivotal portion 61 of the rear rocker arm 6 and The first support 58 is located at the Between the reduction gear group chamber 53b of the transmission box 53 and the belt CVT system chamber 53c, the overall configuration of the power unit 5 and the rear rocker arm 6 can be made more compact; the second pivoting portion 62 It is pivotally connected to the second support 59, which means that 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 Is pivotally connected to the second support 59, and the second pivotal portion 62 is located between the power output wheel 571 of the transmission portion 52 and the transmission box 53, so that the rear rocker arm 6 is driven by the drive shaft 564 The axis center Y is the up and down swing center, and the power output shaft 57 is coaxial with the axis center Y and swings up and down synchronously with the rear wheel RW; the rear wheel RW is provided with a rear-wheel drive wheel 7, and the rear wheel The driving wheel 7 is connected with the power output wheel 571 on the power output shaft 57 by a transmission member 8 (belt or chain), whereby the power output wheel 571 on the power output shaft 57 drives the transmission member 8 to drive The rear wheel drives the wheel 7 so that the rear wheel RW can be driven to rotate synchronously.

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, so that the swingability of the rear rocker arm 6 can be ensured, and the The operability of the belt CVT system 56.

The main effect of this creation 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 part 51 and a transmission part 52, the transmission part 52 A right box body 52a and a left box body 52b form a transmission box 53. The transmission box 53 has a crankshaft chamber 53a provided with a crankshaft 54 and a reduction gear group chamber 53b provided with a reduction gear group 55. The right An outer cover 52c is provided on the outside of the box 52a to form a belt CVT system chamber 53c. The belt CVT system chamber 53c is provided with a belt CVT system 56; the belt CVT system 56 is driven by the crankshaft 54 The belt CVT system 56 has a driving wheel 561, a driven wheel 562, and a driving belt 563 connecting the driving wheel 561 and the driven wheel 562. The center of the driven wheel 562 is provided with a drive shaft 564, which can drive The reduction gear set 55, 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 pivoting portion 61, a second pivoting portion 62 And the pivot is provided with a rear wheel shaft 63, the rear wheel shaft 63 is pivoted with a rear wheel RW and a rear wheel drive wheel 7, a transmission member 8 is provided between the rear wheel drive wheel 7 and the power output wheel 571; the rear rocker arm 6 The first pivoting portion 61 and the second pivoting portion 62 are pivoted on the transmission box 53. The first pivoting portion 61 is located between the reduction gear assembly 53b and the belt stepless transmission system. Between the chambers 53c; thereby making the overall configuration of the transmission portion 52 compact.

The second effect of this creation is that the rear rocker arm 6 takes the axial center Y of the drive shaft 564 as the vertical swing center, and makes the power output shaft 57 coaxial with the axial center Y; The rocker arm 6 takes the axis center Y of the drive shaft 564 as the vertical swing center, and the drive shaft 564 is coaxial with the axis center Y, so that the front wheel FW and the rear wheel can be reduced. The wheelbase of the wheel RW can further reduce the size of the locomotive 2.

The third effect of this creation is that the transmission part 52 is provided with a first support member 58 and a second support member 59 on both sides of the transmission box 53 respectively, and the first pivoting portion 61 of the rear rocker arm 6 Is pivotally connected to the first support member 58, and the second pivotal portion 62 is pivotally connected to the second support member 59; thereby, the overall configuration of the transmission portion 52 and the rear rocker arm 6 can be tight化.

The fourth effect of this creation is that the second pivoting portion 62 is located between the power output wheel 571 of the transmission portion 52 and the transmission box 53; thereby, the transmission portion 52 and the rear rocker arm The overall configuration of 6 is compact.

The fifth effect of this creation is that a connecting cover 9 is provided between the belt continuously variable transmission system chamber 53c and the transmission box 53; this can effectively prevent external moisture or dust from entering the first pivotal portion 61 And the belt CVT system chamber 53c, so as to ensure the swingability of the rear rocker arm 6 and the operability of the belt CVT system 56.

The sixth effect of this creation is that the connecting cover 9 has a perforation 91 for the drive shaft 564 of the transmission part 52 to pass through; this can effectively prevent external moisture or dust from entering the first In the pivotal portion 61 and the belt CVT system chamber 53c, the swingability of the rear rocker arm 6 and the operability of the belt CVT system 56 can be ensured.

The seventh effect of this creation is that the inner periphery of the perforation 91 is provided with a stepped accommodating portion 92, and the accommodating portion 92 is provided with a dust cover 93; this can effectively prevent external moisture or dust from entering the first A pivoting portion 61 and the belt CVT system chamber 53c can ensure the swing of the rear rocker arm 6 and ensure the operation of the belt CVT system 56 Workability.

The eighth effect of this creation is that the connecting cover 9 is locked on the outer cover 52c; thereby, external moisture or dust can be effectively prevented from entering the first pivotal portion 61 and the belt continuously variable transmission system In the chamber 53c, the swingability of the rear rocker arm 6 and the operability of the belt CVT system 56 can be ensured.

The ninth effect of this creation 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 swingability of the rear rocker arm 6 and the operability of the belt CVT system 56 can be ensured.

In summary, with the above-mentioned structure, this creation can improve the lack of knowledge and achieve the desired purpose. It has indeed improved the efficiency compared with the habitual users, and it has shown that it has the requirements of novelty, practicability and progress. It is proposed by law. For the application of a new model, I would like to ask your examiner for a detailed review, and I would like to grant the approval of the patent, which is very convenient.

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 (9)

A rear rocker arm configuration structure 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. The transmission part has at least a right box and a left The box body forms a transmission box. The transmission box has a crankshaft room with a crankshaft and a reduction gear group room with a reduction gear set. The right box body is covered with an outer cover to form a belt continuously variable transmission system room. , The belt CVT system room is provided with a belt CVT system; the belt CVT system is driven by a crankshaft, the belt CVT system has a driving wheel, a driven wheel and connecting the driving wheel and the driven wheel Drive the belt, the center of the driven wheel is provided with a drive shaft, the drive shaft can drive the 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 The pivoting portion, the second pivoting portion and a rear wheel shaft are 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, which is characterized in : The rear rocker arm is pivotally mounted on the transmission case through the first pivotal portion and the second pivotal portion, and the first pivotal portion is located in the reduction gear assembly chamber and the belt CVT system chamber between. The locomotive rear rocker arm configuration structure according to claim 1, wherein the rear rocker arm takes the axial center of the drive shaft as the vertical swing center, and the power output shaft is coaxial with the axial center. The locomotive rear rocker arm configuration structure according to claim 1, wherein a first support member and a second support member are respectively provided on two sides of the transmission box of the transmission part, and the first pivot part of the rear rocker arm Is pivotally connected to the first support member, and the second pivotal portion is pivotally connected to the second support member. The locomotive rear rocker arm configuration structure according to claim 3, wherein the second pivotal part is located between the power output wheel of the transmission part and the transmission box. The locomotive rear rocker arm configuration structure according to claim 1, wherein a connecting cover is provided between the belt continuously variable transmission system room and the transmission case. The locomotive rear rocker arm configuration structure according to claim 5, wherein the connecting cover has a perforation for the drive shaft of the transmission case to pass through. The locomotive rear rocker arm configuration structure according to claim 6, 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. The locomotive rear rocker arm configuration structure according to claim 5, wherein the connecting cover is locked on the outer cover of the transmission box. The locomotive rear rocker arm configuration structure according to claim 7, wherein the dust cover is located between the connecting cover and the first pivotal portion of the rear rocker arm.

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