CN216407637U

CN216407637U - Wheel side gear engaging speed change mechanism

Info

Publication number: CN216407637U
Application number: CN202122153956.3U
Authority: CN
Inventors: 沈诗琪; 朱紫涵; 沈伟强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-04-29
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to a gear limit engaging speed change mechanism, it includes the connecting cylinder, hydraulic motor and planetary gear, hydraulic motor sets up the one end at the connecting cylinder, planetary gear is including rotating the ring gear that sets up in the connecting cylinder, sun gear and at least one and ring gear internal tooth meshing's planet idle gear set up in the ring gear, the even interval of planet idle gear and meshing set up in sun gear week side, be provided with the transmission frame that is used for installing sun gear and planet idle gear in the connecting cylinder, transmission frame and connecting cylinder synchronous rotation, the hydraulic motor output shaft is connected with the pivot of sun gear, one side of transmission frame is provided with the internal tooth hole coaxial with the sun gear, the sun gear slides along self axis direction and sets up, be provided with the driving piece that is used for driving the sun gear to remove on the connecting cylinder, the in-process that the sun gear removed respectively with planet idle gear or hole meshing. The transmission device has the effects of realizing the gear engaging and speed changing of amphibious crawler equipment when in use, ensuring that the amphibious crawler equipment has large torque when climbing, and improving the walking speed of the flat ground.

Description

Wheel side gear engaging speed change mechanism

Technical Field

The application relates to the field of driving parts, in particular to a wheel-side gear shifting mechanism.

Background

At present, a wheel-side mechanism is a main reducer which transmits power to a rear axle through an engine via a transmission, and then transmits the power to the wheel-side reducer and wheels or a track from an output end of the main reducer so as to drive a vehicle to move forward or backward. In some devices for dredging river channels or amphibious crawler devices, the wheel-side mechanisms of the amphibious devices are mostly used for driving the crawler to walk because the amphibious devices need to walk in the sludge sometimes.

The wheel side mechanism of the existing amphibious mechanical equipment generally comprises a hydraulic motor, a planetary gear, a connecting cylinder and two belt wheels, wherein the two belt wheels are fixedly arranged at the outer sides of the two ends of the connecting cylinder, the belt wheels are meshed with a crawler belt, an output shaft of the hydraulic motor drives the connecting cylinder to rotate through the planetary gear, so that the two belt wheels and the crawler belt are driven to rotate, the output of large torque can be realized through the speed reduction of the planetary gear, and the climbing capacity of the amphibious machinery is ensured.

In view of the above-mentioned related art, there is a need for improvement in that the wheel-side mechanism generally does not need to be shifted again, and it is difficult to shift again, and thus the walking speed cannot be increased on flat ground.

SUMMERY OF THE UTILITY MODEL

In order to realize the change speed of putting into gear of amphibious track equipment when using, have great moment of torsion when guaranteeing the climbing, improve level land walking speed simultaneously, this application provides a wheel limit change gear that puts into gear.

The application provides a wheel limit is put into gear speed change mechanism adopts following technical scheme: a wheel-side gear-engaging speed-changing mechanism comprises a connecting cylinder, a hydraulic motor and a planetary gear, wherein the hydraulic motor is arranged at one end of the connecting cylinder, the planetary gear is arranged in the connecting cylinder and comprises a gear ring which is rotationally arranged in the connecting cylinder, a sun gear arranged in the gear ring and at least one planetary intermediate gear which is meshed with the internal teeth of the gear ring, the planet intermediate wheels are evenly spaced and meshed with the periphery of the sun wheel, a transmission frame for mounting the sun wheel and the planet intermediate wheels is arranged in the connecting cylinder, the transmission frame and the connecting cylinder rotate synchronously, the output shaft of the hydraulic motor is connected with the rotating shaft of the sun wheel, one side of the transmission frame is provided with an inner tooth hole which is coaxial with the sun gear, the sun gear is arranged in a sliding way along the axis direction of the sun gear, the connecting cylinder is provided with a driving piece for driving the sun gear to move, and the sun gear is meshed with the planet intermediate gear or the inner tooth hole in the moving process.

By adopting the technical scheme, the output shaft of the hydraulic motor drives the sun gear to rotate, the gear ring keeps static, so that each planetary intermediate gear rotates along the circumferential direction of the gear ring while rotating, the transmission frame and the connecting cylinder are driven to synchronously rotate by the planetary gears, and the transmission frame and the connecting cylinder have larger output torque and can ensure normal climbing; and when walking on the level land, drive the sun gear through actuating mechanism and break away from planet idle wheel and with the meshing of inner tooth hole, hydraulic motor can directly drive transmission frame and connecting cylinder rotation this moment, and the connecting cylinder rotational speed is fast, realizes the change speed of putting into gear of amphibious track equipment when using, has great moment of torsion when guaranteeing to climb, improves level land walking speed simultaneously.

Preferably, a supporting shaft is rotatably connected to the connecting cylinder in the axis direction, the rotating axis of the supporting shaft and the output shaft of the hydraulic motor are in the same straight line, and one end of the supporting shaft is fixedly connected with one side, away from the hydraulic motor, of the gear ring.

Through adopting above-mentioned technical scheme, set up through the rotation of back shaft with the connecting cylinder, when the transmission frame rotated for the back shaft can remain stable.

Preferably, an axis position in the connecting cylinder is rotatably provided with a transmission shaft, one end of the transmission shaft is connected with an output shaft of the hydraulic motor, the other end of the transmission shaft is fixedly connected with a spline, the spline penetrates through the inner tooth hole, the sun gear is sleeved on the spline and slides on the spline, and the sun gear is fixedly connected with the spline in the circumferential direction of the spline.

By adopting the technical scheme, the output shaft of the hydraulic motor drives the sun gear to rotate sequentially through the transmission shaft and the spline, so that the output shaft of the hydraulic motor with a certain distance can be connected with the spline in series through the transmission shaft, and the transmission of the hydraulic motor to the sun gear is realized; and the spline passes through the inner tooth hole, so that the sun gear can be meshed with the inner tooth hole when sliding on the spline shaft line.

Preferably, the supporting shaft is provided with a through hole along the axis direction, the driving part is a hydraulic cylinder horizontally installed in the through hole, and the end part of a piston rod of the hydraulic cylinder is connected with one side surface of the sun gear.

Through adopting above-mentioned technical scheme, the through-hole on supporting the epaxial can be installed to the pneumatic cylinder for pneumatic cylinder and sun gear are on the coaxial line, and when the piston rod of pneumatic cylinder when flexible removal, alright drive the sun gear and slide on the integral key shaft line.

Preferably, an inner sleeve coaxial with the spline is arranged on a piston rod of the hydraulic cylinder, the inner sleeve is sleeved outside the spline, and one end, far away from the piston rod, of the inner sleeve is fixedly connected with one side face of the sun gear.

By adopting the technical scheme, the sun wheel is sleeved on the spline, the inner sleeve is fixed on the piston rod of the hydraulic cylinder and sleeved on the outer side of the spline, so that the inner sleeve can avoid the spline to be connected with one side surface of the sun wheel, the connection between the piston rod and the sun wheel is convenient, and the normal sliding drive of the sun wheel is ensured.

Preferably, at least one shaft seat for installing the transmission shaft is fixed on the inner wall of the connecting cylinder at intervals, and the peripheral side of the transmission shaft is rotatably connected with the shaft seat through a first bearing.

Through adopting above-mentioned technical scheme, through the cooperation between first bearing and the axle bed, can cross the rotation that realizes that the transmission shaft is stable, smooth and easy in the connecting cylinder, realize hydraulic motor to the stable transmission of spline.

Preferably, be provided with the access hole on the outside of connecting cylinder, access hole and the inside intercommunication of connecting cylinder, be provided with the closing cap that is used for sealing the access hole on the access hole.

Through adopting above-mentioned technical scheme, the cooperation between access hole and the closing cap, after opening the closing cap, the part of connecting cylinder is maintained, is changed from the access hole to the convenience.

Preferably, belt pulleys are arranged at two ends of the connecting cylinder and are meshed with the crawler.

Through adopting above-mentioned technical scheme, through setting up the band pulley, the band pulley can mesh with the track and be connected, when the band pulley rotates along with the connecting cylinder, alright drive the track walking.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) through the arrangement of the planetary gear, the driving mechanism, the transmission frame, the hydraulic motor and the internal tooth hole, and through the switching of the sun gear between the planetary gear and the internal tooth hole, the gear engagement and speed change of the amphibious crawler equipment during use are realized, the large torque is ensured during climbing, and the walking speed on the flat ground is improved;

(2) the supporting shaft and the through hole are matched, and the hydraulic cylinder is arranged in the through hole, so that the driving piece and the sun wheel are kept coaxial, and the hydraulic cylinder is convenient to drive the sun wheel to move;

(3) through the cooperation between endotheca, the spline, can realize being connected between pneumatic cylinder and the sun gear for the pneumatic cylinder can avoid the spline to be connected with the sun gear and drive the sun gear and slide.

Drawings

Fig. 1 is a schematic structural view of a wheel-side shift change mechanism according to the present embodiment;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a partially exploded schematic view of the wheel-side shift mechanism of the present embodiment;

fig. 4 is a schematic structural view of the transmission frame of the embodiment.

Reference numerals: 1. a connecting cylinder; 2. a hydraulic motor; 3. a pulley; 4. a planetary gear; 41. a ring gear; 42. a sun gear; 43. a planetary intermediate wheel; 5. a transmission frame; 6. a drive shaft; 7. a spline; 8. a shaft seat; 9. a first bearing; 10. an inner tooth hole; 11. a drive member; 12. a support shaft; 13. a through hole; 14. an inner sleeve; 15. an access hole; 16. sealing the cover; 17. a second bearing.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a wheel-side gear engaging speed change mechanism which is mainly used for walking of some amphibious engineering machinery tracks. Referring to fig. 1 and 2, the wheel-side gearshift mechanism includes a connecting cylinder 1, a hydraulic motor 2, two pulleys 3, and a planetary gear 4.

Referring to fig. 2 and 3, the two belt wheels 3 are locked and fixed on the outer walls of the two ends of the connecting cylinder 1, and the two belt wheels 3 are meshed with the crawler; the inside cavity of connecting cylinder 1 sets up and both ends seal the setting, and hydraulic motor 2 installs in the one end of connecting cylinder 1 and seals the tip of connecting cylinder 1, and hydraulic motor 2's output shaft position is towards connecting cylinder 1 in and coaxial with connecting cylinder 1 axis, and hydraulic motor 2 lies in the position outside connecting cylinder 1 and is fixed with engineering machine's wheel carrier, rotates between hydraulic motor 2 and the connecting cylinder 1 and sets up.

Referring to fig. 2 and 4, the planetary gear 4 is disposed in an end of the connecting cylinder 1 remote from the hydraulic motor 2, the planetary gear 4 including a ring gear 41 rotatably disposed in the connecting cylinder 1, a sun gear 42 disposed at a central axis of the ring gear 41, and at least one planetary intermediate gear 43 internally tooth-engaged with the ring gear 41; the gear ring 41 is arranged in the connecting cylinder 1 in a suspending way, in the embodiment, three planet intermediate wheels 43 are arranged, and the three planet intermediate wheels 43 are evenly meshed with the periphery of the sun wheel 42 at intervals; a transmission frame 5 for mounting a sun wheel 42 and a planet intermediate wheel 43 is fixed on the inner wall of the connecting cylinder 1, and the transmission frame 5 and the connecting cylinder 1 synchronously rotate; the rotating shafts of the planet intermediate wheel 43 are rotatably connected with the transmission frame 5, the rotating shafts of the planet intermediate wheel 43 and the sun wheel 42 are parallel to the output shaft of the hydraulic motor 2, and the output shaft of the hydraulic motor 2 is connected with the rotating shaft of the sun wheel 42; when the hydraulic motor 2 drives the sun gear 42 to rotate, the gear ring 41 keeps static, the three planetary intermediate gears 43 rotate, and meanwhile, the rotating shafts of the planetary intermediate gears 43 also rotate around the circumferential direction of the gear ring 41, so that the transmission frame 5 and the connecting cylinder 1 are driven to rotate, and a large torque output is achieved at the moment.

Referring to fig. 2 and 3, a transmission shaft 6 is rotatably disposed at an axial position of the connecting cylinder 1, one end of the transmission shaft 6 is connected to an output shaft of the hydraulic motor 2, the other end is fixedly connected to a spline 7, and a sun gear 42 is mounted on the spline 7 in a sleeved manner. At least one shaft seat 8 is fixed on the inner wall of the connecting cylinder 1 at intervals along the axial direction, in the embodiment, two shaft seats 8 are arranged, the shaft seats 8 are annular, a first bearing 9 is fixed at the center of each shaft seat 8, and the transmission shaft 6 is fixed on the inner ring of each first bearing 9; since the connecting cylinder 1 has a certain length, a stable transmission between the output shaft of the hydraulic motor 2 and the sun gear 42 is achieved through the transmission shaft 6.

The central position of one side of the transmission frame 5 close to the hydraulic motor 2 is provided with an internal tooth hole 10, the internal tooth hole 10 and the sun gear 42 are arranged coaxially, and the spline 7 penetrates through the axis of the internal tooth hole 10; the sun gear 42 is sleeved on the spline 7 and slides on the spline 7, and the sun gear 42 slides along the length direction of the spline 7; in the circumferential direction of the spline 7, the sun gear 42 is fixedly connected to the spline 7 so that the sun gear 42 does not rotate in the circumferential direction of the spline 7. Meanwhile, a driving piece 11 for pushing the sun gear 42 to move is arranged on the connecting cylinder 1, and the sun gear 42 is meshed with the planet intermediate gear 43 or the inner toothed hole 10 respectively in the moving process; when the sun gear 42 is disengaged from the planetary intermediate gear 43 and meshed with the internal tooth hole 10, the sun gear 42 directly drives the transmission frame 5 to rotate, and the transmission frame 5 is not required to be transmitted through the rotating shaft of the planetary intermediate gear 43, so that the connecting cylinder 1 has a faster rotating speed, gear shifting is realized, and a faster traveling speed is realized when the ground is leveled.

Specifically, a supporting shaft 12 is rotatably connected to the connecting cylinder 1 in the axis direction, the peripheral side of the supporting shaft 12 is rotatably connected to the connecting cylinder 1 through two second bearings 17 installed at intervals, and the supporting shaft 12 is located at one end of the connecting cylinder 1 far away from the hydraulic motor 2. The rotating axis of the supporting shaft 12 and the output shaft of the hydraulic motor 2 are in the same straight line, one end of the supporting shaft 12 and one side of the gear ring 41 far away from the hydraulic motor 2 are locked and fixed, and the other end of the supporting shaft 12 can be fixed with another wheel carrier of the engineering machinery, so that the gear ring 41 is kept suspended and fixedly installed.

The supporting shaft 12 is provided with a through hole 13 along the axis direction, the driving part 11 is a hydraulic cylinder horizontally installed in the through hole 13, an annular inner sleeve 14 is fixed at the end part of a piston rod of the hydraulic cylinder, the axis of the inner sleeve 14 is parallel to the piston rod, one end of the inner sleeve 14 is sleeved outside the spline 7, and the other end of the inner sleeve 14 is located in the through hole 13, so that the piston rod can avoid the spline 7 to be fixedly connected with the sun gear 42, and the inner sleeve 14 is far away from one side face of the sun gear 42 far away from the hydraulic motor 2 to be connected with the sun gear 42. When the piston rod moves in a telescopic mode, the sun gear 42 is driven to slide on the spline 7, and meshing switching of the sun gear 42 between the planetary intermediate gear 43 and the inner tooth hole 10 can be achieved.

In addition, referring to fig. 1, two access holes 15 are opened on the outer side of the connecting cylinder 1, the access holes 15 are communicated with the inside of the connecting cylinder 1, and a cover 16 for sealing the access holes 15 is locked on the access holes 15.

The implementation principle of a wheel side gear shifting mechanism in the embodiment of the application is as follows: when the amphibious engineering machinery crawler equipment needs to climb or walk in mud, the sun wheel 42 is meshed with the planet intermediate wheel 43, and the gear ring 41 keeps static, so that the planet intermediate wheel 43 rotates in a self-rotating mode, and meanwhile, a rotating shaft of the planet intermediate wheel 43 can rotate circumferentially around the gear ring 41, so that the transmission frame 5 and the connecting cylinder 1 are driven to rotate, and a large torque is guaranteed; when walking on the flat ground, can drive sun gear 42 through the pneumatic cylinder and remove at 7 length direction on the spline for sun gear 42 breaks away from planet intermediate gear 43 and makes sun gear 42 and internal tooth hole 10 meshing, and sun gear 42 directly drives the driving frame 5 and rotates this moment, and the rotational speed of connecting cylinder 1 becomes fast, realizes the change of gear that puts in gear of amphibious track equipment when using, has great moment of torsion when guaranteeing to climb, improves the effect of flat ground walking speed simultaneously.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a gear shifting mechanism is put into gear to rim, includes connecting cylinder (1), hydraulic motor (2) and planetary gear (4), hydraulic motor (2) set up the one end at connecting cylinder (1), planetary gear (4) set up in connecting cylinder (1), its characterized in that: the planetary gear (4) comprises a gear ring (41) which is rotatably arranged in the connecting cylinder (1), a sun gear (42) which is arranged in the gear ring (41) and at least one planetary intermediate gear (43) which is meshed with the inner teeth of the gear ring (41), wherein the planetary intermediate gear (43) is uniformly arranged on the periphery of the sun gear (42) at intervals and meshed with the inner teeth of the gear ring (41), a transmission frame (5) which is used for installing the sun gear (42) and the planetary intermediate gear (43) is arranged in the connecting cylinder (1), the transmission frame (5) and the connecting cylinder (1) synchronously rotate, an output shaft of the hydraulic motor (2) is connected with a rotating shaft of the sun gear (42), one side of the transmission frame (5) is provided with an inner tooth hole (10) which is coaxial with the sun gear (42), the sun gear (42) is arranged in a sliding mode along the axis direction of the connecting cylinder (1), and a driving piece (11) which is used for driving the sun gear (42) to move is arranged on the connecting cylinder (1), the sun wheel (42) is meshed with the planet intermediate wheel (43) or the inner tooth hole (10) in the moving process.

2. A wheel-side gear shifting mechanism according to claim 1, characterized in that: lie in self axis direction rotation in connecting cylinder (1) and be connected with back shaft (12), the axis of rotation of back shaft (12) and hydraulic motor (2) output shaft are at same straight line, one side fixed connection that hydraulic motor (2) were kept away from to back shaft (12) one end and ring gear (41).

3. A wheel-side gear shifting mechanism according to claim 2, characterized in that: the axial line position in connecting cylinder (1) rotates and is provided with transmission shaft (6), the one end of transmission shaft (6) and the output shaft of hydraulic motor (2), other end fixedly connected with spline (7), internal tooth hole (10) are passed in spline (7), sun gear (42) cover is established and is slided on spline (7) in the circumference of spline (7), sun gear (42) and spline (7) fixed connection.

4. A wheel-side gear shifting mechanism according to claim 3, characterized in that: the supporting shaft (12) is provided with a through hole (13) along the axis direction, the driving piece (11) is a hydraulic cylinder horizontally arranged in the through hole (13), and the end part of a piston rod of the hydraulic cylinder is connected with one side surface of the sun gear (42).

5. A wheel-side gear shifting mechanism according to claim 4, characterized in that: an inner sleeve (14) coaxial with the spline (7) is arranged on a piston rod of the hydraulic cylinder, the inner sleeve (14) is sleeved on the outer side of the spline (7), and one end, far away from the piston rod, of the inner sleeve (14) is fixedly connected with one side face of the sun gear (42).

6. A wheel-side gear shifting mechanism according to claim 3, characterized in that: at least one shaft seat (8) used for installing the transmission shaft (6) is fixed on the inner wall of the connecting cylinder (1) at intervals, and the peripheral side of the transmission shaft (6) is rotatably connected with the shaft seat (8) through a first bearing (9).

7. A wheel-side gear shifting mechanism according to claim 1, characterized in that: be provided with access hole (15) on the outside of connecting cylinder (1), access hole (15) and the inside intercommunication of connecting cylinder (1), be provided with closing cap (16) that are used for sealing access hole (15) on access hole (15).

8. A wheel-side gear shifting mechanism according to claim 1, characterized in that: the two ends of the connecting cylinder (1) are provided with belt wheels (3), and the belt wheels (3) are meshed with the crawler.