CN2916262Y

CN2916262Y - Tractor transmission mechanism

Info

Publication number: CN2916262Y
Application number: CN 200620034988
Authority: CN
Inventors: 李培根; 李有德
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-15
Filing date: 2006-07-15
Publication date: 2007-06-27
Anticipated expiration: 2016-07-15

Abstract

The utility model discloses a transmission mechanism of ''Gong Nong-12'' walking tractor, which comprises a gear box and an I-IV gear shaft inside the gear box. The gear VII shaft is output shaft. The utility model is characterized in that: the input shaft is gear I shaft whose one end is extending out the gear box. Outside the gear I shaft is connected a belt wheel driven by a diesel engine. The tooth number rate of the output gear and the transmission gear joggled with the output gear on the (clutch) output shaft and the gear VII shaft is 39:18. Power of the utility model enters through the gear I directly, which saves the chain wheel input structure and transmission box body, simplifies the structure of gear box, prevents the chain wheel reducing mechanism from non-effective working of tractor transmission mechanism due to its failure, reducers the maintenance cost and increases the reliability of tractor transmission mechanism's performance.

Description

The tractor driving mechanism

(1) technical field:

The utility model relates to a kind of " workers and peasants' 12 types " tractor driving mechanism.

(2) background technique:

The driving mechanism that tractor uses is mainly the gear shaft group in speed-changing gear box and the speed-changing gear box, most typical is that " workers and peasants' 12 types " used with tractor gear graduation box assembly is made up of speed-changing gear box and two parts of chain transmission case, the power input that diesel engine produces is through the coaxial clutch shaft that is connected of clutch pulley, drive sprocket, pass to driven sprocket by chain power again, in order to guarantee the normal engaged of sprocket wheel, also be provided with Idle wheel on the anchor chain diameter.Driven sprocket is connected on the input shaft, and input shaft stretches in the speed-changing gear box, via outputting power after the I-VII gear shaft speed change.Two VII axles are output shaft, and the be placed in both sides of speed-changing gear box of VII axle are connecting two driving wheels of tractor respectively.Be somebody's turn to do " workers and peasants' 12 types " forerunner's dynamic formula used with tractor speed-changing gear box difference engagement six forward gearss of formation and two reverse gears by sliding gear.

Because the road conditions of travelling of tractor are more abominable, the load that is hit is bigger, often causes the malfunctioning of Idle wheel, influences the normal engaged of sprocket wheel and chain, and final result is the transmission that influences power; Simultaneously impulsive load is also very big to the infringement of sprocket wheel and chain, often causes the tooth that collapses of the fracture of chain and sprocket wheel, and chain and sprocket wheel are often changed and maintenance, have increased the user cost of tractor.

(3) model utility content:

At the deficiency of above-mentioned " workers and peasants' 12 types " used with tractor speed-changing gear box, the purpose of this utility model has provided a kind of more rational " workers and peasants' 12 types " tractor driving mechanism.

Can realize the tractor driving mechanism of above-mentioned purpose, comprise in " workers and peasants' 12 types " speed-changing gear box, speed-changing gear box the I-VII gear shaft and outside speed-changing gear box with the coaxial input shaft that is connected of gear I axle and with the coaxial output shaft that is connected of gear VII axle, different is to have saved transmission case body, chain, sprocket wheel and clutch shaft, but with input shaft directly be connected by diesel-driven clutch pulley is coaxial.

The direct actuation gear I of clutch pulley axle, under the condition of the diesel engine that uses same power and the belt pulley of same velocity ratio, the biography speed of gear I axle increases, if also will guarantee output shaft and the original rotating speed of gear VII axle, then the simplest method is to change the coaxial output gear that is connected on the gear VII axle and the number of teeth of the driving gear that is meshed with it, changes original gear ratio into 39: 18 at 44: 13 and gets final product.

Advantage of the present utility model:

The utility model tractor driving mechanism has saved sprocket wheel deceleration input structure, directly enter and change from gear I axle by power, simplified the structure of speed-changing gear box, avoided effectively to work because of the tractor driving mechanism that sprocket wheel deceleration input structure fault causes, reduce maintenance cost, increased the reliability of tractor driving mechanism work.

(4) description of drawings:

Fig. 1 is the unfolded drawing of the original structure of speed-changing gear box of " workers and peasants' 12 types " tractor.

Fig. 2 is the unfolded drawing of the utility model " workers and peasants' 12 types " gear graduation box structure.

Figure number sign: 1, speed-changing gear box, 2, driven sprocket, 3, clutch pulley,, output gear, 5, driving gear, 6, Idle wheel, 7, drive sprocket, Z1, gear I axle, Z2, gear II axle, Z3, gear III axle, Z4, gear IV axle, Z5, gear V axle, Z6, gear VI axle, Z7, gear VII axle.

(5) embodiment:

As shown in Figure 1, show in the unfolded drawing " workers and peasants' 12 types " cuing open of the original structure of tractor gear gearbox, speed-changing gear box 1 is laterally placed, in the speed-changing gear box 1 from right to left parallel longitudinal be furnished with gear I axle Z1, gear II axle Z2, gear III axle Z3, gear IV axle Z4, gear V axle Z5, gear VI axle Z6 and gear VII axle Z7, gear VII axle Z6 and gear VII axle Z7 are two, place both sides, speed-changing gear box 1 left back respectively, the end of gear VII axle Z7 is positioned at speed-changing gear box 1, the other end of gear VII axle Z7 stretches out outside the speed-changing gear box 1 becomes output shaft, and output shaft is connected with the driving wheel of tractor; The gear that gear VII axle Z7 and gear VI axle Z6 diaxon are meshed is respectively output gear 4 and driving gear 5, and output gear 4 is respectively 44 and 13 with the number of teeth of driving gear 5.

The fixed gear that be equipped with correlation function on gear I axle Z1, gear II axle Z2, gear III axle Z3, gear IV axle Z4, the gear V axle Z5, can select to cooperate, sliding gear, differential gear, reverse gear etc. and gear VI axle Z6, gear VII axle Z7 have constituted six forward gearss and two reverse gears of " workers and peasants' 12 types " tractor gear gearboxes together jointly.

As shown in Figure 1, speed-changing gear box 1 one sides of gear I axle Z1 position are provided with continuous transmission case body outward, and a pair of reduction of speed sprocket wheel is installed in the transmission case body, are respectively large-sized driven sprocket 2 and undersized drive sprocket 7; The end of gear I axle Z1 stretches out and enters transmission case body behind the speed-changing gear box 1 and become input shaft, input shaft and driven sprocket 2 coaxial being connected; Clutch shaft vertically places transmission case body right side forefront, one end of clutch shaft stretches out from transmission case body, the drive sprocket 7 coaxial clutch shafts that are connected in are on the interior end of transmission case body, driven sprocket 2 and drive sprocket 7 are connected by chain, also be provided with on the anchor chain diameter of chain chain is collapsed tight Idle wheel 6; The coaxial clutch pulley 3 that is fixed with on the axle head of clutch shaft outside transmission case body, clutch pulley 3 pass through belt drives by diesel engine.

In mode of execution as shown in Figure 2, cancelled as shown in Figure 1 transmission case body and interior parts such as driven sprocket 2, drive sprocket 7, Idle wheel 6 and clutch shaft, gear I axle Z1 axle head original and that driven sprocket 2 is connected extends outside speed-changing gear box 1, directly coaxial being connected of the axle head of gear I axle Z1 extending part gone up clutch pulley 3, becomes input shaft.

Generally speaking, the size of belt pulley 3 is constant, because the reduction of speed ratio that has not had driven sprocket 2 and drive sprocket 7 to produce, the rotating speed of gear I axle can be than original height, if the rotating speed of control output shaft and gear VII axle Z7 is with original consistent, then need to adjust the velocity ratio of the coaxial output gear that is connected 4 of gear VII axle Z7 and the coaxial driving gear that is connected 5 of previous stage gear VI axle Z6, specific practice is the number of teeth that changes phase gear, and the output gear 4 after the change and the number of teeth of driving gear 5 are respectively 39 and 18.

Claims

1, tractor driving mechanism, comprise in " workers and peasants' 12 types " speed-changing gear box (1), speed-changing gear box (1) the I--VII gear shaft and speed-changing gear box (1) outside with the coaxial input shaft that is connected of gear I axle (Z1) and with the coaxial output shaft that is connected of gear VII axle (Z7), it is characterized in that: input shaft direct with by coaxial being connected of diesel-driven clutch pulley (3).

2, tractor driving mechanism according to claim 1 is characterized in that: gear VII axle (Z7) is gone up the coaxial output gear that is connected (4) and the gear ratio of the driving gear (5) that is meshed with it is 39: 18.