CN211710960U

CN211710960U - Variable speed transmission mechanism of crawler tractor

Info

Publication number: CN211710960U
Application number: CN202020280566.5U
Authority: CN
Inventors: 王金保
Original assignee: Jiangxi Ganfa Machinery Manufacturing Co ltd
Current assignee: Jiangxi Ganfa Machinery Manufacturing Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-20
Anticipated expiration: 2030-03-10

Abstract

The utility model relates to a track tractor technical field just discloses a track tractor's variable speed drive mechanism, including actuating mechanism and two about actuating mechanism symmetry and fix mount and the motor on the frame, the fixed cover of actuating mechanism's output is equipped with the pivot, the fixed cover of one end of pivot is equipped with the crown tooth, the outer driven straight-teeth gear that has two symmetries to set up, two along the meshing of crown tooth the movable sleeve is equipped with first connecting axle between the driven straight-teeth gear. This crawler tractor's variable speed drive mechanism drives the lead screw through starter motor and rotates, utilizes the limiting displacement of bracing piece, makes the opposite or relative motion of removal seat at lead screw and bracing piece both ends to drive the relative or opposite motion of drive wheel on two output shafts, and then the elasticity between adjustable drive wheel and the track, not only made things convenient for crawler tractor's use, and the installation of the track on the drive wheel of being convenient for simultaneously.

Description

Variable speed transmission mechanism of crawler tractor

Technical Field

The utility model relates to a track tractor technical field specifically is a track tractor's variable speed drive mechanism.

Background

The caterpillar tractor is also called caterpillar tractor or caterpillar tractor, and its running mechanism is composed of guide wheel, driven wheel, thrust wheel, drive wheel and caterpillar. When the crawler-type crawler belt is in operation, the driving wheel winds the crawler belt to do circular motion, and the thrust wheel rolls on the track of the crawler belt to move forwards or backwards.

However, although the speed change transmission mechanism of the conventional track-type tractor can drive the driving wheel of the track-type tractor to rotate, the tightness of the track on the driving wheel cannot be adjusted, and therefore, the installation of the track on the driving wheel is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a track tractor's variable speed drive mechanism possesses the track and is convenient for install, advantage with adjustable track elasticity, and the variable speed drive mechanism who has solved current track tractor though can drive track tractor's drive wheel rotates, nevertheless can't adjust the elasticity of track on the drive wheel, consequently also is not convenient for the problem of track installation on the drive wheel.

The utility model provides a following technical scheme: a variable-speed transmission mechanism of a crawler tractor comprises a driving mechanism, two fixed frames and a motor, wherein the two fixed frames are symmetrical about the driving mechanism and are fixed on a frame, the output end of the driving mechanism is fixedly sleeved with a rotating shaft, one end of the rotating shaft is fixedly sleeved with a crown gear, two driven straight gears which are symmetrically arranged are meshed with the outer edge of the crown-shaped gear, a first connecting shaft is movably sleeved between the two driven straight gears, and the outer edges of the two driven straight gears are engaged with connecting gears, a second connecting shaft is movably sleeved between the two connecting gears, and the outer edges of the two connecting gears are respectively engaged with two adjusting gears, an output shaft is fixedly sleeved between the two adjusting gears, a first connecting rod is movably sleeved between the output shaft and the second connecting shaft, and a second connecting rod is movably sleeved between the second connecting shaft and the first connecting shaft.

Preferably, the one end fixedly connected with adjusting collar of output shaft, the inside movable sleeve that the adjusting collar kept away from output shaft one end is equipped with the regulating spindle, and has all seted up the regulation hole on adjusting collar and the regulating spindle, the fixed cover of one end of regulating spindle is equipped with sun gear, sun gear's outer planetary gear along the meshing has two symmetries, two be equipped with the planet carrier between the planetary gear, the one end of planet carrier is equipped with the drive wheel, two planetary gear's outer edge meshing has hollow gear.

Preferably, the output ends at the two ends of the motor are fixedly sleeved with lead screws with opposite thread directions, the two ends of each lead screw are movably sleeved on one side between the two fixing frames, the other side between the two fixing frames is fixedly sleeved with a supporting rod, and the two ends of each lead screw and the two ends of each supporting rod are respectively in threaded sleeve connection and movable sleeve connection with a movable seat.

Preferably, the adjusting shaft penetrates through the adjusting shaft and the adjusting hole in the adjusting sleeve through a fixing bolt, and the adjusting sleeve is fixedly sleeved with the adjusting sleeve.

Preferably, the bottoms of the moving seats on the screw rod and the supporting rod are movably sleeved on two ends of the output shaft.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this crawler tractor's variable speed drive mechanism drives the lead screw through starter motor and rotates, utilizes the limiting displacement of bracing piece, makes the opposite or relative motion of removal seat at lead screw and bracing piece both ends to drive the relative or opposite motion of drive wheel on two output shafts, and then the elasticity between adjustable drive wheel and the track, not only made things convenient for crawler tractor's use, and the installation of the track on the drive wheel of being convenient for simultaneously.

2. This crawler tractor's variable speed drive mechanism through being provided with the adjusting collar and the regulating spindle that can carry out length control, can carry out the regulation of length with the transmission shaft according to the needs that equipment used, makes the performance of equipment higher, and this mechanism transmits the power for the drive wheel through planetary drive mechanism, has reduced the transmission link for chain drive, and compact structure has increased transmission efficiency, has also avoided simultaneously when chain or belt drive to be drawn into weeds and the mechanical fault who causes.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the sun gear of the present invention;

fig. 3 is a sectional view of the structure adjusting sleeve of the utility model.

In the figure: 1. a drive mechanism; 2. a rotating shaft; 3. a crown tooth; 4. a driven spur gear; 5. a first connecting shaft; 6. a connecting gear; 7. a second connecting shaft; 8. an adjusting gear; 9. an output shaft; 10. a first link; 11. A second link; 12. an adjusting sleeve; 13. an adjustment shaft; 14. an adjustment hole; 15. a sun gear; 16. a planetary gear; 17. a planet carrier; 18. a drive wheel; 19. a hollow gear; 20. a fixed mount; 21. a motor; 22. A screw rod; 23. a support bar; 24. and a movable seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a variable transmission mechanism of a crawler tractor comprises a driving mechanism 1, two fixed frames 20 and a motor 21 which are symmetrical about the driving mechanism 1 and fixed on a frame, an output end of the driving mechanism 1 is fixedly sleeved with a rotating shaft 2, one end of the rotating shaft 2 is fixedly sleeved with a crown gear 3, the outer edge of the crown gear 3 is engaged with two symmetrically arranged driven spur gears 4, a first connecting shaft 5 is movably sleeved between the two driven spur gears 4, the outer edges of the two driven spur gears 4 are both engaged with a connecting gear 6, a second connecting shaft 7 is movably sleeved between the two connecting gears 6, the outer edges of the two connecting gears 6 are both engaged with two adjusting gears 8, an output shaft 9 is fixedly sleeved between the two adjusting gears 8, a first connecting rod 10 is movably sleeved between the output shaft 9 and the second connecting shaft 7, a second connecting rod 11 is movably sleeved between the second connecting shaft 7 and the first connecting shaft 5, in the installation of track and track tractor's use, drive the lead screw 22 that both ends have positive and negative screw through starter motor 21 and rotate, utilize the limiting displacement of bracing piece 23, make the relative or opposite motion of removal seat 24 at lead screw 22 and bracing piece 23 both ends to drive the opposite or relative motion of drive wheel 18 on two output shafts 9, and then adjust the elasticity of track on the drive wheel, make things convenient for track tractor's use or the installation of track.

Wherein, one end of the output shaft 9 is fixedly connected with an adjusting sleeve 12, the inner part of the adjusting sleeve 12 far away from one end of the output shaft 9 is movably sleeved with an adjusting shaft 13, and the adjusting sleeve 12 and the adjusting shaft 13 are both provided with adjusting holes 14, one end of the adjusting shaft 13 is fixedly sleeved with a sun gear 15, the outer edge of the sun gear 15 is engaged with two symmetrical planetary gears 16, a planetary carrier 17 is arranged between the two planetary gears 16, one end of the planetary carrier 17 is provided with a driving wheel 18, the outer edges of the two planetary gears 16 are engaged with a hollow gear 19, the mechanism transmits force to the driving wheel 18 through a planetary transmission mechanism consisting of the adjusting shaft 13, the sun gear 15, the planetary gears 16, the planetary carrier 17 and the hollow gear 19, compared with chain transmission, the transmission link is reduced, the structure is compact, the transmission efficiency is increased, and meanwhile, the mechanical fault caused by the fact that weeds are involved in the chain or belt transmission is avoided.

Wherein, the output end at both ends of the motor 21 is fixedly sleeved with a screw rod 22 with opposite thread directions, both ends of the screw rod 22 are movably sleeved at one side between the two fixing frames 20, the other side between the two fixing frames 20 is fixedly sleeved with a supporting rod 23, and both ends of the screw rod 22 and the supporting rod 23 are respectively in threaded sleeve and movable sleeve with a movable seat 24.

Wherein, the adjusting shaft 13 is through inside the fixed cover of adjusting hole 14 on adjusting shaft 13 and the adjusting sleeve 12 is equipped with adjusting sleeve 12 through fixing bolt, through adjusting hole 14 and the fixing bolt's of seting up on adjusting shaft 13 and the adjusting sleeve 12 cooperation, adjusts the length of the transmission shaft that adjusting shaft 13 and output shaft 9 constitute, makes the performance of equipment higher, and the installation is more convenient.

Wherein, the bottoms of the moving seats 24 on the screw rod 22 and the support rod 23 are movably sleeved on the two ends of the output shaft 9.

The working principle is as follows: firstly, under the normal use condition, the crown gear 3 at one end of the rotating shaft 2 is driven to rotate by the driving mechanism 1, the driven straight gear 4 is driven to rotate by the rotating crown gear 3, the adjusting gear 8 is driven to rotate by the meshing transmission of the connecting gear 6, so as to drive the output shaft 9 to rotate, the sun gear 15 at one end of the adjusting shaft 13 is driven to rotate by the rotation of the output shaft 9, so as to drive the planetary gear 16 to rotate around the sun gear 15 in the hollow gear 19, so that the driving wheel 18 on the planet carrier 17 rotates, so as to drive the crawler belt to move, then, in the installation process of the transmission mechanism, the length of the transmission shaft formed by the adjusting shaft 13 and the output shaft 9 is adjusted through the matching of the adjusting hole 14 arranged on the adjusting shaft 13 and the adjusting sleeve 12 and the fixing bolt, so as to facilitate the installation, finally, in the installation of the, the screw rod 22 with the positive and negative threads at two ends is driven to rotate by the starting motor 21, and the relative or opposite movement of the moving seats 24 at two ends of the screw rod 22 and the supporting rod 23 is realized by utilizing the limiting effect of the supporting rod 23, so that the opposite or opposite movement of the driving wheels 18 on the two output shafts 9 is driven, the tightness of the crawler belt on the driving wheels is further adjusted, and the crawler belt tractor is convenient to use or install the crawler belt.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a variable speed drive of track tractor, includes actuating mechanism (1) and two mount (20) and motor (21) that are symmetrical and fix on the frame about actuating mechanism (1), its characterized in that: the output end of the driving mechanism (1) is fixedly sleeved with a rotating shaft (2), one end of the rotating shaft (2) is fixedly sleeved with a crown-shaped tooth (3), two driven straight gears (4) which are symmetrically arranged are meshed with the outer edge of the crown-shaped gear (3), a first connecting shaft (5) is movably sleeved between the two driven straight gears (4), and the outer edges of the two driven straight gears (4) are respectively engaged with a connecting gear (6), a second connecting shaft (7) is movably sleeved between the two connecting gears (6), and the outer edges of the two connecting gears (6) are respectively engaged with two adjusting gears (8), an output shaft (9) is fixedly sleeved between the two adjusting gears (8), a first connecting rod (10) is movably sleeved between the output shaft (9) and the second connecting shaft (7), a second connecting rod (11) is movably sleeved between the second connecting shaft (7) and the first connecting shaft (5).

2. The variable speed drive of a track tractor according to claim 1, wherein: one end fixedly connected with adjusting collar (12) of output shaft (9), the inside movable sleeve that output shaft (9) one end was kept away from in adjusting collar (12) is equipped with regulating spindle (13), and has all seted up regulation hole (14) on adjusting collar (12) and regulating spindle (13), the fixed cover of one end of regulating spindle (13) is equipped with sun gear (15), there are planetary gear (16) of two symmetries, two along the meshing outward of sun gear (15) be equipped with planet carrier (17) between planetary gear (16), the one end of planet carrier (17) is equipped with drive wheel (18), two there is hollow gear (19) along the meshing outward of planetary gear (16).

3. The variable speed drive of a track tractor according to claim 1, wherein: the screw rod (22) with opposite thread directions is fixedly sleeved on the output ends of the two ends of the motor (21), the two ends of the screw rod (22) are movably sleeved on one side between the two fixing frames (20), the other side between the two fixing frames (20) is fixedly sleeved with the supporting rod (23), and the two ends of the screw rod (22) and the supporting rod (23) are respectively in threaded sleeve connection and movable sleeve connection with the moving seat (24).

4. The variable speed drive of a track tractor according to claim 2, wherein: the adjusting shaft (13) penetrates through the adjusting shaft (13) and an adjusting hole (14) in the adjusting sleeve (12) through a fixing bolt, and the adjusting shaft is fixedly sleeved inside the adjusting sleeve (12).

5. The variable speed drive of a track tractor according to claim 3, wherein: the bottoms of the moving seats (24) on the screw rod (22) and the support rod (23) are movably sleeved on the two ends of the output shaft (9).