KR20020066145A - Power train and travel speed of riding type tiller - Google Patents

Abstract

In the present invention, the one-point turning is smoothly operated and tillage work is possible until just before the turn, so that the minimum immersion turning is possible. This invention relates to a tractor speeding device configured to be possible, and includes a main clutch, forward and reverse gearing, a peripheral gear, a sub transmission, a differential assembly, a reduction gear, a PTO transmission, and a four-wheel drive shaft. In the transmission structure, the transmission comprises a four-wheel drive shaft that is operated during four-wheel drive shaft 1, 2, 3, coupled to the lower portion of the middle shaft 2 of the four-wheel drive shaft coupled to the speed transmission device surrounded by a space mission case In four-wheel drive, the tractor is driven through shafts 1, 2 and 3, and in double speed drive, the gear is coupled to the outer periphery of shaft 3. 2 is coupled to the gear 3 coupled to the outer periphery of the shaft 4, the gear 4 is coupled to the other side to the shaft 4, the gear 4 is coupled to the gear 1 coupled to the shaft 2 of the four-wheel drive shaft to power the shaft 1 Transmission to perform a speed drive according to the difference in the gear ratio, the transmission provides a speeding device of the tractor, characterized in that the speeding device is configured in the lower portion of the transmission so that the four-wheel drive and the speeding drive is operated separately.

Description

Tractor speed device {Power train and travel speed of riding type tiller}

The present invention relates to a tractor speeding device, and more particularly, since the single point turning is operated quickly and tilling is possible until just before the turn is started, the minimum immersion turning is possible, and the exclusive four speed driving clutch is installed to be subordinated. It relates to a tractor speeding device configured to allow pavement work at twice the rotation speed when turning through gears.

In general, tractors avoid products that are easy to handle and operate and ensure safety.At present, the wave of advancement is being blown from each farm, thus reducing the labor intensity of machinery work to improve farming capacity, thereby increasing farm income and farm machinery. In order to improve the utilization efficiency of the plant, to deal with the work according to the change of farming type, to consider the machine efficiency, and to cope with the labor force according to the change of the industrial structure, the tractor has been studied.

1 is a view schematically showing a general riding type tractor, the riding tractor 10 has an apparent handle 12, a driver's seat 14, a brake pedal 16, a parking brake pedal 18, a shift lever 20, It is composed of a key switch 22 and the engine rotation control lever 24, the tractor 10 is a transmission is formed on the inside and the engine is formed in the front.

The handle 12 is used when the driver changes the direction of the tractor 10, and the shift lever 20 operates by linearly moving the stop (neutral), the working speed, and the traveling speed (movement) with one lever. When the brake pedal 16 is used as a parking brake, the brake pedal 16 is stepped on and fixed with the parking brake pedal 18. When the brake pedal 16 is released, the brake is automatically released.

The tractor 10 includes a main clutch in which a transmission structure is coupled to an engine, a forward and backward transmission device installed at one side of the main clutch, a peripheral gear device installed at one side of the forward and backward transmission device, and the peripheral gear device. A sub transmission device installed on one side, a reduction gear installed on one side of the sub transmission device, a PTO transmission device installed on the side of the reduction gear and a shift function, a hydraulic cylinder assembly installed on the upper portion of the PTO transmission device, the PTO connecting shaft installed in the lower portion of the PTO transmission, PTO transmission coupled to the PTO connecting shaft and formed as a lower portion of the forward and reverse transmission, and functions as a sub-clutch and formed as a lower portion of the PTO transmission and the PTO transmission shaft It consists of a four-wheel drive shaft.

As described above, the tractor 10 has a clutch composed of a main clutch and a PTO clutch, and in particular, the four-wheel drive shaft is installed in one line.

The general riding type tractor described above has a problem in that the mission structure has no configuration of double speed and has a wide radius of rotation when the steering wheel is turned to turn and a smooth turning is not achieved.

The present invention, in order to solve the above problems, the present invention, by installing a dedicated double speed clutch on the four-wheel drive of the transmission of the riding tractor is capable of double speed when turning through the slave gear and the riding tractor starts to turn It is an object of the present invention to provide a tractor speeding device having a structure capable of tilling until just before, and improving the performance of the tilling.

In order to achieve the above object, the present invention provides a transmission including a main clutch, a forward and reverse transmission, a peripheral gear, a sub transmission, a differential assembly, a reduction gear, a PTO transmission, and a four-wheel drive shaft. In the transmission structure of the tractor constituting the transmission, the transmission comprises a four-wheel drive shaft operated during the four-wheel drive shaft 1, 2, 3, the middle shaft 2 of the four-wheel drive shaft is surrounded by a space mission case at the bottom In the case of four-wheel drive, the tractor is driven through the shafts 1, 2, and 3, and in the double speed drive, the gear 2 coupled to the outer periphery of the shaft 3 is coupled to the gear 3 coupled to the outer periphery of the shaft 4. The gear 4 is coupled to the other side to the shaft 4, and the gear 4 is coupled to the gear 1 coupled with the shaft 2 of the four-wheel drive shaft to transfer the power to the shaft 1 to the ship according to the difference in gear ratio Conduct and drive, the transmission provides a double-speed device of a tractor, it characterized in that the double-speed device configured to lower the transmission to operate separately the four-wheel drive and the double-speed driving.

1 is a view schematically showing a general riding tractor.

Figure 2 is a view for explaining the speeding device of the riding-type tractor of the present invention.

Figure 3 is a view showing in detail only the speeding device of the riding type tractor of the present invention.

<Brief description of symbols for the main parts of the drawings>

30: riding tractor 32: transmission

34: main clutch 36: forward and reverse transmission

38: peripheral gear 40: sub transmission

42: reduction gear 44: differential assembly

46, 52: PTO transmission 48: hydraulic cylinder assembly

50: PTO connecting shaft 54: 4-wheel drive shaft

56: front axle assembly 58: speeding device

60: shaft 1 62: shaft 2

64: shaft 3 66: coupling

68: gear 1 70: gear 2

72: spring 74: cam

76 shifter 78 washer

80: gear 3 82: gear 4

84: friction plate 86: shift plate

88 housing 90 shaft 4

92: bush (or collar) 94: seal collar

96: spacer mission case 98: piston

100: double speed valve assembly 102: disk plate

Hereinafter, with reference to the accompanying drawings will be described the configuration and operating state of the present invention.

Figure 2 is a view for explaining the speeding device of the riding tractor of the present invention, Figure 3 is a view showing in detail only the speeding device of the riding tractor of the present invention.

As can be seen in Figure 2, the transmission structure of the ride-type tractor 30 is the main clutch 34 coupled to the engine, the forward and reverse transmission 36 connected to one side of the main clutch 34, the front Peripheral gear 38 connected to one side of the reverse transmission 36, the sub-transmission device 40 connected to one side of the peripheral gear device 38, on one side of the sub-shift device 40 The differential gear assembly 44 is connected and installed between the reduction gear 42 and the sub transmission device 40 and the reduction gear 42 that are connected and installed, and is connected to the side of the reduction gear 42 and has a shift function. PTO transmission device 46, the hydraulic cylinder assembly 48 connected to the upper portion of the PTO transmission device 46, the PTO connecting shaft 50 connected to the lower portion of the PTO transmission device 46, the PTO transmission device 52 connected to the PTO connecting shaft 50 and formed as a lower portion of the forward and reverse transmission 36 and functioning as a sub clutch. ), Connected to the four-wheel drive shaft 54 formed below the PTO transmission device 52 and the PTO connecting shaft 50, the four-wheel drive shaft 54 is connected to the front axle assembly 56 on one side. It is provided and a double speed device 58 is configured at the other lower portion of the four-wheel drive shaft (54). That is, the speed distribution device 58 is located directly under the middle of the four-wheel drive shaft 54, which is divided into three.

Referring to the state in which the speed shift device 58 is operated, the power of the engine is transmitted to the forward and reverse transmission 36, and the power of the forward and reverse transmission 36 is transmitted to the peripheral gear 38. The power of the peripheral gear 38 is transmitted to the sub transmission 40, the power of the sub transmission 40 is delivered to the four-wheel drive shaft 54, and the power of the four-wheel drive shaft 54 is the double speed gear. And delivered to the front axle assembly 56.

In the four-wheel drive of the four-wheel drive shaft 56, when the power is transmitted to the main clutch 34 in the engine installed in front of the main clutch 34 (left side in the drawing), the power is transferred through the main clutch 34. It is transmitted to the reverse transmission 36 and the power of the forward and reverse transmission 36 is transmitted to the sub transmission 40 through the peripheral gear 38, the power of the sub transmission 40 It is transmitted forward through the four-wheel drive shaft 54.

As can be seen in Figure 3, the speeding device 58 of the riding tractor 30 is installed directly below the middle of the four-wheel drive shaft is divided into three parts, the four-wheel drive shaft 58 is a shaft 1,2 , 3 (60), 62, 64 is configured to be separated and the speed distribution device 58 is installed in the lower portion of the shaft 2 (62) to transfer power to the difference in the gear ratio of each other.

The shaft 1 60 is coupled to each other using a coupling 66 at its outer circumference when coupled to the shaft 2 62, and the shaft 2 62 is connected to the other side of the coupling 66. Shaft 2 (62) has gear 1 (68), spring (72), cam (74), shifter (76), washer (78) and gear (2) in order from one side on which shaft 1 (60) is formed. It is a structure that is mutually coupled.

That is, the gear 1 60 is coupled to the shaft 2 62 at an outer circumference, and a spring 72 is connected between the gear 1 60 and the cam 74, and a shifter is attached to the cam 74. The 76 is seated outward and the washer 78 is connected between the cam 74 and the gear 2 70.

Gear 4 (82) is coupled to the gear 1 (68) formed by the outer periphery of the shaft 2 (62), the gear 2 (70) is connected to the gear 3 (80) of the speed distribution apparatus, the cam (74) The friction plate 84 is in close contact with the shifter 76 seated on the outer middle portion of the gear 3 80 formed on the side of the speeding device, and the shift plate 86 is connected to the shifter 76.

That is, the shifter 76 is coupled to and fixed to a shift plate 86 formed to have a structure penetrating one side of the housing 88 of the speeding device and seated on the outer circumference of the gear 3 80. Four-wheel drive is performed by the said shift plate 86, and double-speed drive is performed when the shifter 76 is moved to the left by the said shift plate 86. FIG.

The gear 3 (80) is provided with a shaft 4 (90) in the center portion, the gear 4 (82) is located on the opposite side of the gear 3 (80) is installed, the shaft 4 (90) bush (or collar) 92 ) Is installed on the outer circumference and the seal collar 94 is installed on the side on which the bush 92 is installed, and the above-mentioned speeding device is finished with the spacer mission case 96 installed at the bottom thereof.

When the shaft 4 90 and the gear 3 80 are engaged, a housing 88 is formed therebetween, and a friction plate 84 is positioned inside the housing 88. That is, a piston 98 is installed inside one side of the housing 88, and a friction plate 84 is installed on the other side of the housing 88, and a shift plate 86 is positioned between the friction plate 84 and the piston 98. The shift plate 86 is configured to penetrate the housing 88 to protrude out of the housing 88, and the shift plate 86 is seated on the outside of the cam 74. The structure is coupled to.

Meanwhile, mission oil is supplied from the double speed valve assembly 100 to the spherical mission case 96 through the bush 92 coupled to the shaft 4 90. The mission oil has about 3 litters per minute. 88), the internal pressure of the oil pipe flowing into the mission oil is 13 kg / cm ² ± 1 kg / cm ² .

The double speed valve assembly 100 opens the valve when the switch is operated to supply oil. The oil supplied from the double speed valve assembly 100 is supplied through the PTO valve supplying the mission oil to the PTO transmission 46. And the mission oil is supplied to the double speed valve through the PTO valve.

The arrow drawn by a dashed-dotted line in FIG. 3 is a path through which power is transmitted during double speed driving, and the green arrow drawn by a dashed-dotted line is a path through which power is transmitted during four-wheel drive.

As can be seen from the above description, when a path that is normally operated during four-wheel drive and double speed drive will be described, the friction plate 84 and the disc plate 102 will be engaged with each other during double speed and idle with each other during four-wheel drive. The shorter ones represent the friction plate 84 and the longer ones represent the disc plate 102.

The transmission 32 has a gear ratio of gear 1 (68) and gear 2 (70) of 1: 1 during the four-wheel drive, the power transmitted from the engine is equally transmitted to the passenger-type tractor at the same speed ( 30) is driven.

In addition, the four-wheel drive lever is to operate on / off, when the four-wheel drive lever is on the structure that the electronic switch to operate the detailed description is omitted.

The transmission 32, when the shaft 3 (64) is rotated during the four-wheel drive, the rotational force of the shaft 3 (64) is transmitted to the gear 2 (70) and the power of the gear 2 (70) to the cam 74 Power is transmitted to shaft 1 60 via shaft 2 62 to coupling 66.

The gear 2 70 has a higher gear ratio than the gear 3 80, the gear 3 80 and the gear 4 82 have the same gear ratio, and the gear 4 82 has a gear ratio higher than the gear 1 68. Because of its size, double speed drive is possible.

In addition, when the driving speed of the riding type tractor 30 is described, when the oil is filled in the clutch assembly, the piston 98 is moved to the left side in the drawing and pushes the shift plate 86. When the shift plate 86 moves to the left side, the friction plate 84 is pressed, and then the shift plate 85 moves the cam 74 and the shifter 76 which are formed integrally to the left side to move the cam 74. And the gear 2 (70) will be separated, thereby switching to double speed drive without a four-wheel drive.

The riding tractor 30 has a gear speed of 1.99 times due to the difference in the gear ratios of the gear 2 70 and the gear 3 80 as the gear 2 70 and the gear 3 80 rotate in engagement with each other. It is driven while driving.

As described above, in a four-wheel drive, the rotational force of the shaft 3 64 is transmitted to the gear 2 70, and the rotational force of the gear 2 70 is transmitted to the gear 1 60 through the shaft 2 62. In contrast to the structure transmitted to the shaft 1 (60), during double speed driving, the cam 74 is moved to the left by the operation of the shift plate 86, and the rotational force of the shaft 3 (64) is shifted to the gear 2 (70). Is transmitted to the gear 3 (80) through, the rotational force of the gear 3 (80) is to rotate the shaft 4 (90), thereby transmitting the rotational force of the shaft 4 (90) to the gear 4 (82) difference in gear ratio According to the double speed is to be carried out.

The riding tractor 30 has a double speed drive when the handle of the tractor is bent. The riding tractor 30 transfers the power transmitted from the engine during the double speed drive through the main clutch 34. The power transmitted to the reverse transmission 36, the power transmitted to the forward and reverse transmission 36 is transmitted to the peripheral gear 38, the power transmitted to the peripheral gear 38 is a sub transmission ( 40, the power transmitted to the sub transmission 40 is transmitted to the four-wheel drive shaft 54, the power transmitted to the four-wheel drive shaft 54 is transmitted to the speed distribution device 58, Power transmitted to the speed distribution device 54 is transmitted to the front axle assembly 56 to speed up.

Effects of the configuration and operation of the present invention described above will be described.

In the riding tractor of the present invention, when the steering wheel is steered, the work machine is automatically lifted and the speeding device is driven, so that it can be smoothly rotated in the workplace of the straight section. Can improve the work of the.

Claims (3)

In a transmission structure of a tractor comprising a main clutch, a forward and reverse transmission, a peripheral gear, a sub transmission, a differential assembly, a reduction gear, a PTO transmission, and a four-wheel drive shaft, the transmission is a four-wheel drive. The four-wheel drive shaft 54, which is operated at the same time, consists of shafts 1, 2, 3 (60), 62, 64, and a space mission case at the lower portion of the middle shaft 2 62 of the four-wheel drive shaft 54. Combines the speed distribution device (58) enclosed by (96), drive the tractor through the shaft 1, 2, 3 (60) (62) 64 during four-wheel drive, shaft 3 (64) during double speed drive Gear 2 (70) coupled to the outer circumference of the coupling is coupled to the gear 3 (80) coupled to the outer circumference of the shaft 4 (90) and the gear 4 (82) on the other side to the shaft 4 (90), The gear 4 82 is coupled to the gear 1 68 coupled with the shaft 2 62 of the four-wheel drive shaft to transmit power to the shaft 1 60 so as to vary the gear ratio. Subjected to different speed driving, and the transmission device is a speed of the tractor, it characterized in that the double-speed device configured to lower the transmission to operate separately the four-wheel drive and the double-speed driving. According to claim 1, wherein the transmission, the four-wheel drive shaft 54 is formed in a straight line, the shaft 2 (62) is coupled to the gear 1 (68) on one side outer periphery, the gear 1 (68) and the cam A spring 72 is connected between the 74 and a shifter 76 is integrally seated on the cam 72, and a washer 78 is connected between the cam 72 and the gear 2 70. Gear 1 (68) formed on the outer periphery of the shaft 2 (62) and the gear 4 (82) of the speeding device is coupled, the gear 3 (80) of the speeding device is coupled to the gear 2 (70), the cam ( The shift plate 76 seated on the 74 is in close contact with the friction plate 84 in the outer middle portion of the gear 3 (80) formed on the double speed side, the shift plate 86 is configured to be connected to the shifter 76, During the four-wheel drive of the transmission 32, power is transmitted from the engine to the main clutch 34, and the power transmitted from the main clutch 34 is moved to the forward and reverse transmission 36. The power is transmitted, the power transmitted from the forward and reverse transmission 36 is transmitted to the peripheral gear 38, and the power transmitted from the peripheral gear 38 is driven to the sub transmission 40. Is transmitted, the power transmission from the sub transmission device 40, the tractor speed distribution apparatus, characterized in that it has a path that the power is transmitted to the four-wheel drive shaft. According to claim 1, wherein the speed distribution device 58, Gears 1 (68) formed in the outer periphery of the shaft 2 (62) and the gear 3 (80) coupled to the shaft 4 (90) in the gear 2 (70) And gear 4 (82) are coupled to each other, the shifter 76 seated on the cam (74) is in close contact with the friction plate 84 in the outer middle portion of the gear 3 (80), the shifter (76) The shift plate 86 is formed by a structure that penetrates one side of the housing 88 of the housing 88 and is seated on the outer circumference of the gear 3 80, and the shift plate 76 is moved to the left by the shift plate 86. In this case, a double speed drive is performed, while the shaft 4 (90) is provided with a bush 92 on the outer circumference, and a seal collar 94 is installed on the side on which the bush 92 is installed, and the double speed device is installed. Mission case (96) is installed at the bottom and finish, the housing between the shaft 4 (90) and the gear 3 (80) is coupled between A 88 is formed, the friction plate 84 is located inside the housing 88, the housing 88 is provided with a piston 98 is installed inside one side and the friction plate 84 is installed on the other side, A shift plate 86 is positioned between the piston 98 and the friction plate 84, and the shift plate 86 penetrates through the housing 88 and protrudes out of the housing 88. The shift plate 86 is coupled to the shifter 76 seated on the outside of the cam 74 so that the cam 74 is moved to the left by the operation of the shift plate 86 and the rotational force of the shaft 3 80 is It is transmitted to the gear 3 (80) through the gear 2 (70), the rotational force of the gear 3 (80) is to rotate the shaft 4 (90), whereby the rotational force of the shaft 4 (90) to the gear 4 (82) The speeding device of the tractor, characterized in that the speed is carried out according to the difference in the gear ratio while being transmitted.