CN202413288U

CN202413288U - Rear drive axle for paddy field machine

Info

Publication number: CN202413288U
Application number: CN2012200156571U
Authority: CN
Inventors: 郭保可
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-14
Filing date: 2012-01-14
Publication date: 2012-09-05
Anticipated expiration: 2022-01-14

Abstract

The utility model relates to a farmland work machine, in particular to a rear drive axle for a paddy field machine. The rear drive axle comprises a half tube and a half shaft arranged in the half tube, wherein the outer end of the half shaft is connected with a clutch spline shaft, the clutch spline shaft is sheathed with a drive clutch shell, a friction drive mechanism is arranged between the drive clutch shell and the clutch spline shaft, the outer end of the drive clutch shell is fixedly connected with a spline shaft sleeve, an inner chamber of the spline shaft sleeve is provided with a spline shaft through a spline, a brake clutch shell is sheathed outside the spline shaft sleeve, the brake clutch shell is fixedly arranged in a rear axle reduction box shell and is fixedly connected to the outer end of the half tube through a bolt; the power of the half shaft is backwards transferred through the friction drive mechanism, so that parts can be prevented from destroying at overload or instant large torque input. In addition, through operating a brake clutch and a jaw clutch, speed difference of wheels on the both sides can be changed so as to achieve flexible steering and improve maneuvering characteristics.

Description

The paddy field machine rear driving axle

Technical field

The utility model relates to a kind of farm working machinery, a kind of specifically paddy field machine rear driving axle.

Background technology

The paddy field machine work under bad environment often faces muddy environment, to having relatively high expectations of rear-axle drive mechanism.Existing rear driving axle adopts the positive drive of gear mesh usually, and the takeoff output of overload causes undue wear easily, even causes the fracture of semiaxis or transmission gear; In addition, two trailing wheels about power input shaft passes to power simultaneously, the speed discrepancy of two trailing wheels is less, and turn radius ability, maneuverability property big, that break away from mire is influenced.

Summary of the invention

The purpose of the utility model provides and a kind ofly adopts that flexible dynamic transmission, turn radius are little, the paddy field machine rear driving axle of maneuverability, avoids damaging parts during high-power imput power because of overload or moment.

For reaching above purpose, the technical scheme that the utility model adopted is:

The described paddy field machine rear driving axle of the utility model comprises semicanal and the semiaxis that is installed in the semicanal; Be fitted with power input shaft on the semicanal; Said power input shaft is in transmission connection through finishing bevel gear cuter and semiaxis, it is characterized in that: the outer end of said semiaxis is connected with the power-transfer clutch castellated shaft, said power-transfer clutch castellated shaft and the coaxial setting of semiaxis; Be set with the drive clutch housing on the power-transfer clutch castellated shaft; Be provided with slip gear between drive clutch housing and the power-transfer clutch castellated shaft, be fixedly connected with hub splines, said hub splines and the coaxial setting of semiaxis in the outer end of drive clutch housing; Be provided with castellated shaft in the inner chamber of hub splines; Castellated shaft and hub splines are through spline fitted, and the outside of hub splines is set with the brake clutch housing, and said brake clutch housing is fixedly mounted on the outer end that is connected semicanal in the rear axle speed-reducing tank shell and through bolt; The drag friction stator is installed on the inwall of brake clutch housing; The outside face of hub splines is equipped with the drag friction moving plate; Be set with the brake gland on the hub splines, the brake joystick that is inserted on the rear axle speed-reducing tank shell is in transmission connection through connecting rod mechanism and brake gland; Hub splines is in transmission connection through transmission gear and the output shaft that is installed in the rear axle speed-reducing tank shell.

Sliding sleeve is equipped with through spline housing in the outer end of said semiaxis, and the outer end of semiaxis also is equipped with back-up ring, is provided with pull back spring between back-up ring and the sliding sleeve, is provided with dental clutch between sliding sleeve and the power-transfer clutch castellated shaft; On semicanal, be fitted with the sleeve pipe dial axis, be installed with the sleeve pipe shift fork on the sleeve pipe dial axis.

Said slip gear comprises the active friction plate that is installed in power-transfer clutch castellated shaft outside face, be installed on the drive clutch inner walls from movable friction plate, be installed in block plate on the power-transfer clutch castellated shaft, be installed in the disk spring between block plate and the drive clutch housing through spline.

After adopting technique scheme, the power of semiaxis transmits through slip gear backward, if had when overload or moment, high pulling torque was imported, friction lining skids and stops the power input, avoids damaging parts; In addition,, can also change the speed discrepancy of both sides wheel, realize turning to flexibly, improving maneuvering performance through handling brake clutch and dental clutch.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model.

Fig. 2 is the partial enlarged drawing of rear driving axle right-hand member.

Fig. 3 is the cutaway view of rear axle speed-reducing case among Fig. 1 embodiment.

The specific embodiment

Like Fig. 1, shown in Figure 2, the described paddy field machine rear driving axle of the utility model comprises semicanal 1 and the semiaxis 2 that is installed in the semicanal 1, and position suitable on the semiaxis 2 is set with backup bearing, and backup bearing is installed between semiaxis 2 and the semicanal 1, plays the effect of support.Be fitted with power input shaft 3 on the semicanal 1; Said power input shaft 3 is in transmission connection through finishing bevel gear cuter and semiaxis 2; The outer end of said semiaxis 2 is connected with power-transfer clutch castellated shaft 4, and said power-transfer clutch castellated shaft 4 is hollow central siphons that inwall has spline with semiaxis 2 coaxial settings, power-transfer clutch castellated shaft 4.Power-transfer clutch castellated shaft 4 has two kinds with the connection mode of semiaxis 2, and the one, shown in Fig. 1 left side, the end of semiaxis 2 is provided with spline, and this part that has spline is inserted in the power-transfer clutch castellated shaft 4; The 2nd, shown in Fig. 1 right side; Sliding sleeve 12 is equipped with through spline housing in outer end at semiaxis 2, and the outer end of semiaxis 2 also is equipped with back-up ring, is provided with pull back spring 13 between back-up ring and the sliding sleeve 12; Pull back spring 13 can promote the inner slide of sliding sleeve 12 to semiaxis 2; Be provided with dental clutch between sliding sleeve 12 and the power-transfer clutch castellated shaft 4, promptly have half tooth embedding on the outer face of sliding sleeve 12, also have half tooth embedding on the inner end surface of corresponding power-transfer clutch castellated shaft 4; On semicanal 1, be fitted with sleeve pipe dial axis 14, be installed with the sleeve pipe shift fork on the sleeve pipe dial axis 14.Rotating casing dial axis 14 can promote sliding sleeve 12 in the time of the swing of sleeve pipe shift fork and move laterally, combines with power-transfer clutch castellated shaft 4 through dental clutch.

As the different embodiments of the utility model, above-mentioned power-transfer clutch castellated shaft 4 can be used for same back axle simultaneously with two kinds of connection modes of semiaxis 2, and as shown in Figure 1, an end of semiaxis is with first kind of connection mode, and the other end of semiaxis is with second kind of connection mode; Also can all adopt first kind of connection mode, perhaps all adopt second kind of connection mode at the two ends of semiaxis at the two ends of semiaxis.

On power-transfer clutch castellated shaft 4, be set with drive clutch housing 5; Be provided with slip gear between drive clutch housing 5 and the power-transfer clutch castellated shaft 4; Said slip gear utilizes the friction force transferring power between the friction lining; Effect with restricted power output, when the power of input is in the regulation amplitude, normal outputting power; When the power of input surpassed the regulation amplitude, friction lining will skid, and stoped takeoff output.As shown in Figure 1, said slip gear comprises the active friction plate that is installed in power-transfer clutch castellated shaft 4 outside faces, be installed on drive clutch housing 5 inwalls from movable friction plate, be installed in block plate 15 on the power-transfer clutch castellated shaft 4, be installed in the disk spring 16 between block plate 15 and the drive clutch housing 5 through spline.Disk spring 16 compresses with active friction plate with from movable friction plate, the moment of torsion of power-transfer clutch castellated shaft 4 can be compressed through active friction plate with from movable friction plate be delivered to drive clutch housing 5.But when the moment of torsion of power-transfer clutch castellated shaft 4 surpasses the regulation amplitude, active friction plate and skid between the movable friction plate, power can't be delivered to drive clutch housing 5.

Be fixedly connected with hub splines 6 in the outer end of drive clutch housing 5; Said hub splines 6 is with semiaxis 2 coaxial settings and connect as one; Be provided with castellated shaft 7 in the inner chamber of hub splines 6; Castellated shaft 7 passes through spline fitted with hub splines 6, and the outside of hub splines 6 is set with brake clutch housing 8, and said brake clutch housing 8 is fixedly mounted on the outer end that is connected semicanal 1 in the rear axle speed-reducing tank shell 9 and through bolt; The drag friction stator is installed on the inwall of brake clutch housing 8; The outside face of hub splines 6 is equipped with the drag friction moving plate; Be set with brake gland 10 on the hub splines 6; The brake joystick that is inserted on the rear axle speed-reducing tank shell 9 is in transmission connection through connecting rod mechanism 17 and brake gland 10, handles the brake joystick and can promote to brake gland 10 to the medial movement of hub splines 6, through hub splines 6 drag friction stator and drag friction moving plate is compressed; Hub splines 6 is combined with fixing brake clutch housing 8, reach the purpose of drag.Certainly, for the ease of brake gland 10 returns, can also between brake gland 10 and bremsbelage group, disk spring be set, when the external force on the brake gland 10 disappeared, disk spring promoted its return; A plurality of transmission reducing gear are set in the rear axle speed-reducing tank shell 9 as required, and connect output shaft 11 at the end of transmission reducing gear, hub splines 6 is in transmission connection through transmission gear and the output shaft 11 that is installed in the rear axle speed-reducing tank shell 9.

The specific constructive form of brake joystick and connecting rod mechanism can have multiple, does not enumerate one by one at this, and gland 10 moves axially as long as its purpose can promote to brake.

During work, the power of driving engine arrives power input shaft 3 through change speed gear box and clutch transmits, is in transmission connection through finishing bevel gear cuter and semiaxis 2 again.Left side at Fig. 1; Drive power-transfer clutch castellated shaft 4 rotation synchronously through spline in the time of semiaxis 2 rotation, power-transfer clutch castellated shaft 4 is again through active friction plate, output power from movable friction plate, drive clutch housing 5, castellated shaft 7, transmission gear, output shaft 11.At this moment, can promote to brake gland 10 to the medial movement of hub splines 6, drag friction stator and drag friction moving plate compressed, can reduce the rotating speed of output shaft 11 through hub splines 6 if handle the brake joystick.On the right side of Fig. 1, drive sliding sleeve 12 through spline in the time of semiaxis 2 rotations and rotate synchronously, sliding sleeve 12 drives 4 rotations of power-transfer clutch castellated shaft through dental clutch.At this moment, rotate to an angle, cancel the pressure that the sleeve pipe shift fork imposes on sliding sleeve 12 if handle sleeve pipe dial axis 14; Sliding sleeve 12 moves under the effect of pull back spring 13 to the inside, and dental clutch separates, and output shaft 11 stops operating fully; Rotation through the opposite side wheel; Can realize the minimum radius turning, be convenient in narrow space, turn to, perhaps break away from muddy environment.

Utilize the machines working in paddy field of the said paddy field machine rear driving axle of the utility model design-calculated tricycle structure, have good maneuverability property and extremely strong muddy highway crossing ability.

Claims

1. paddy field machine rear driving axle; Comprise semicanal (1) and be installed in the semiaxis (2) in the semicanal (1); Be fitted with power input shaft (3) on the semicanal (1); Said power input shaft (3) is in transmission connection through finishing bevel gear cuter and semiaxis (2), it is characterized in that: the outer end of said semiaxis (2) is connected with power-transfer clutch castellated shaft (4), said power-transfer clutch castellated shaft (4) and the coaxial setting of semiaxis (2); Be set with drive clutch housing (5) on the power-transfer clutch castellated shaft (4); Be provided with slip gear between drive clutch housing (5) and the power-transfer clutch castellated shaft (4), be fixedly connected with hub splines (6), said hub splines (6) and the coaxial setting of semiaxis (2) in the outer end of drive clutch housing (5); Be provided with castellated shaft (7) in the inner chamber of hub splines (6); Castellated shaft (7) passes through spline fitted with hub splines (6), and the outside of hub splines (6) is set with brake clutch housing (8), and said brake clutch housing (8) is fixedly mounted on the outer end that is connected semicanal (1) in the rear axle speed-reducing tank shell (9) and through bolt; On the inwall of brake clutch housing (8) the drag friction stator is installed; The outside face of hub splines (6) is equipped with the drag friction moving plate; Be set with brake gland (10) on the hub splines (6), the brake joystick that is inserted on the rear axle speed-reducing tank shell (9) is in transmission connection through connecting rod mechanism (17) and brake gland (10); Hub splines (6) is in transmission connection through transmission gear and the output shaft (11) that is installed in the rear axle speed-reducing tank shell (9).

2. paddy field machine rear driving axle according to claim 1; It is characterized in that: sliding sleeve (12) is equipped with through spline housing in the outer end of said semiaxis (2); The outer end of semiaxis (2) also is equipped with back-up ring; Be provided with pull back spring (13) between back-up ring and the sliding sleeve (12), be provided with dental clutch between sliding sleeve (12) and the power-transfer clutch castellated shaft (4); On semicanal (1), be fitted with sleeve pipe dial axis (14), the sleeve pipe dial axis is installed with the sleeve pipe shift fork on (14).

3. paddy field machine rear driving axle according to claim 1 and 2 is characterized in that: said slip gear comprises the active friction plate that is installed in power-transfer clutch castellated shaft (4) outside face, be installed on drive clutch housing (5) inwall from movable friction plate, be installed in block plate (15) on the power-transfer clutch castellated shaft (4), be installed in the disk spring (16) between block plate (15) and the drive clutch housing (5) through spline.