CN213655651U - Double-speed planet wheel transmission - Google Patents

Abstract

The utility model discloses a double speed planet wheel transmission, including casing, planet wheelset and transmission shaft, planet wheelset includes sun gear, planet carrier and ring gear, and planet wheel on the planet carrier meshes the cooperation with sun gear and ring gear mutually respectively, and the transmission shaft links with the sun gear mutually, is equipped with in the casing to be used for ring gear and casing relative pine to take off or the first lock solid mechanism of locking and be used for transmission shaft and ring gear relative pine to take off or the second lock solid mechanism of locking. The utility model discloses can realize the variable speed output, through the relative lock solid cooperation between casing, ring gear and the main shaft, realize locking and double-circuit output function, satisfy variable speed output application demand. The locking structure is ingenious in design and compact in structure, the size of the transmission is reduced, and the space is saved. Adopt the form that the oil pressure pine takes off to realize initial condition locking, when equipment trouble appearing, satisfy the oil break and interrupt the output demand, reduce the potential safety hazard. Meanwhile, the output is more stable and reliable.

Description

Double-speed planet wheel transmission

Technical Field

The utility model relates to a double speed planet wheel transmission belongs to the technical field of transmission derailleur.

Background

The input power source of the current mechanical transmission is generally a motor or an internal combustion engine, the torque and the rotating speed of which are slightly changed, but the running speed of the machine in a complex working environment needs to be changed in a considerable range. In order to solve the contradiction, a speed changer is additionally arranged between the power source and the speed reducer. The speed variator is a gear transmission device capable of fixing or changing the transmission ratio of output shaft and input shaft by means of step-by-step change, and is mainly formed from transmission mechanism and speed-changing mechanism.

Traditionally, the speed change mechanism only has single-stage speed change torque transmission, but the speed change mechanism with multi-stage speed regulation generally has a complex structure, occupies a large space, cannot meet the requirement of the loading space of the speed change mechanism, and has poor speed change regulation stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned prior art, to the comparatively complicated and relatively poor problem of speed governing stability of traditional multistage speed change mechanism structure, provide double speed planet wheel transmission derailleur.

In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:

a double-speed planetary gear transmission comprises a shell, a planetary gear set and a transmission shaft, wherein the planetary gear set comprises a sun gear, a planet carrier and a gear ring, a planetary gear on the planet carrier is respectively meshed and matched with the sun gear and the gear ring, the transmission shaft is linked with the sun gear,

and a first locking mechanism used for relatively loosening or locking the gear ring and the shell and a second locking mechanism used for loosening or locking the transmission shaft and the gear ring are arranged in the shell.

Preferably, the first locking mechanism comprises an extension sleeve arranged on the gear ring and a ring rib arranged on the inner wall of the shell, the extension sleeve is provided with a first piston body, a first static friction plate is arranged between the first piston body and the ring rib, one side, deviating from the ring rib, of the first piston body is provided with a first elastic assembly, and the shell is provided with a first oil injection part for injecting oil to drive the first piston body to axially move in the direction deviating from the ring rib.

Preferably, the second locking mechanism includes a bushing body provided with a circular convex wall and arranged on the transmission shaft, and a circular wall arranged on the inner wall of the extension sleeve, the bushing body is provided with a second elastic component, a second static friction plate is arranged between the circular convex wall and the circular wall, the second elastic component is provided with a driving end penetrating through the circular convex wall and connected with the second static friction plate,

and one side of the second elastic assembly, which deviates from the annular convex wall, is provided with a second piston body, and the shell is provided with a second oil injection part for injecting oil to drive the second piston body to axially move in the direction deviating from the annular wall.

Preferably, a push-pull sleeve is arranged between the second elastic assembly and the second piston body.

The beneficial effects of the utility model are mainly embodied in that:

1. the variable-speed output can be realized, the locking and double-path output functions are realized through the relative locking and matching among the shell, the gear ring and the main shaft, and the application requirement of the variable-speed output is met.

2. The locking structure is ingenious in design and compact in structure, the size of the transmission is reduced, and the space is saved.

3. Adopt the form that the oil pressure pine takes off to realize initial condition locking, when equipment trouble appearing, satisfy the oil break and interrupt the output demand, reduce the potential safety hazard. Meanwhile, the output is more stable and reliable.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the two-speed planetary transmission of the present invention.

Fig. 2 is an exploded schematic view of the two-speed planetary transmission of the present invention.

Fig. 3 is the overall structure schematic diagram of the two-speed planetary gear transmission of the present invention.

Detailed Description

The utility model provides a double speed planet wheel transmission derailleur. The technical solution of the present invention will be described in detail below with reference to the accompanying drawings so as to be easier to understand and grasp.

Two-speed planetary gear transmission, as shown in fig. 1 to 3, includes a housing 1, a planetary gear set 2 and a transmission shaft 3, the planetary gear set 2 includes a sun gear 21, a planet carrier 22 and a gear ring 23, a planetary gear 221 on the planet carrier 22 is respectively engaged with the sun gear 21 and the gear ring 23, and the transmission shaft 3 is linked with the sun gear 21.

The housing 1 is provided with a first locking mechanism 4 for releasing or locking the gear ring 23 and the housing 1, and a second locking mechanism 5 for releasing or locking the transmission shaft 3 and the gear ring 23.

The specific implementation process and principle description are as follows:

under the locking state of the first locking mechanism 4 and the second locking mechanism 5, the shell 1, the gear ring 23 and the transmission shaft 3 are locked into a whole, at the moment, the input at the end of the planet carrier 22 cannot be transmitted to the transmission shaft 3, and the transmission shaft 3 is in the locking state.

Under the locking state of the first locking mechanism 4 and the releasing state of the second locking mechanism 5, the housing 1 and the gear ring 23 are relatively fixed, the gear ring 23 is in the locking state, and at the moment, the input torque of the planet carrier 22 is output to the sun gear 21 through the planet gear 221 and is transmitted to the transmission shaft 3 to form a first torque output.

Under the state that the first locking mechanism 4 is released and the second locking mechanism 5 is locked, the gear ring 23 is released from the shell 1, the gear ring 23 is locked with the sun gear 21, and at the moment, the input torque of the planet carrier 22 forms a second torque output with the transmission ratio of 1:1 on the driving shaft 3.

In an embodiment, the first locking mechanism 4 includes an extension sleeve 41 disposed on the gear ring 22, and a ring rib 11 disposed on an inner wall of the housing 1, a first piston body 42 is disposed on the extension sleeve 41, a first static friction plate 43 is disposed between the first piston body 42 and the ring rib 11, a first elastic component 44 is disposed on a side of the first piston body 42 away from the ring rib 11, and a first oil injection portion 45 for injecting oil to drive the first piston body 42 to move axially away from the ring rib 11 is disposed on the housing 1.

In an embodiment, the second locking mechanism 5 includes a bushing body 51 having a convex annular wall and disposed on the transmission shaft 3, and an annular wall disposed on an inner wall of the extension sleeve 41, the bushing body 51 is provided with a second elastic element 52, a second static friction plate 53 is disposed between the convex annular wall and the annular wall, the second elastic element 52 has a driving end penetrating through the convex annular wall and connected to the second static friction plate, a second piston body 54 is disposed on a side of the second elastic element 52 facing away from the convex annular wall, and a second oil injection portion 55 for injecting oil to drive the second piston body to move axially away from the annular wall is disposed on the housing 1.

The specific implementation process and principle description are as follows:

the first locking mechanism 4 and the second locking mechanism 5 are in the locking state in the initial state.

When the first locking mechanism 4 is locked, the first oil injecting portion 45 injects oil to drive the first piston 42 to displace away from the ring rib 11, so that the first static friction plate 43 is released, and the first static friction plate 43 is separated from the ring rib 11, so that the housing 1 is released from the extending sleeve 41. After the oil is drained, the second elastic assembly 52 is elastically restored, so that the first piston body 42 presses the first static friction sheet 43, thereby achieving locking.

When the second locking mechanism 5 performs the locking operation, the second oil injection portion 55 injects oil to drive the second piston body 54 to displace away from the annular wall, so that the second elastic element 52 releases the second static friction plate 53, and at this time, the bushing body 51 and the extension sleeve 41 are released. After the oil is drained, the second elastic element 52 is reset to be pressed against the second static friction plate 53, so that the bushing body 51 is locked with the transmission shaft 3.

In one embodiment, a push-pull sleeve 6 is disposed between the second elastic component 52 and the second piston body 54, and the design of the push-pull sleeve 6 can provide a space for avoiding the first locking mechanism 4, thereby making the internal structure more compact.

Can discover through the above description, the utility model discloses double speed planet wheel transmission derailleur can realize the variable speed output, and through the relative lock solid cooperation between casing, ring gear and the main shaft, realize locking and double-circuit output function, satisfy variable speed output application demand. The locking structure is ingenious in design and compact in structure, the size of the transmission is reduced, and the space is saved. Adopt the form that the oil pressure pine takes off to realize initial condition locking, when equipment trouble appearing, satisfy the oil break and interrupt the output demand, reduce the potential safety hazard. Meanwhile, the output is more stable and reliable.

The above technical solutions of the present invention have been fully described, and it should be noted that the present invention is not limited by the above description, and all technical solutions formed by equivalent transformation or equivalent transformation adopted by the spirit of the present invention in the aspects of structure, method or function by those of ordinary skill in the art all fall within the protection scope of the present invention.

Claims (4)

1. Double speed planet wheel transmission derailleur, its characterized in that:

comprises a shell, a planetary wheel set and a transmission shaft, wherein the planetary wheel set comprises a sun wheel, a planet carrier and a gear ring, a planet wheel on the planet carrier is respectively meshed and matched with the sun wheel and the gear ring, the transmission shaft is linked with the sun wheel,

and a first locking mechanism used for relatively loosening or locking the gear ring and the shell and a second locking mechanism used for loosening or locking the transmission shaft and the gear ring are arranged in the shell.

2. The two-speed planetary transmission as in claim 1, wherein:

the first locking mechanism comprises an extension sleeve arranged on the gear ring and a ring rib arranged on the inner wall of the shell, a first piston body is arranged on the extension sleeve, a first static friction sheet is arranged between the first piston body and the ring rib, a first elastic assembly is arranged on one side, deviating from the ring rib, of the first piston body, and a first oil injection part used for driving the first piston body to axially move in the direction deviating from the ring rib is arranged on the shell.

3. The two-speed planetary transmission as in claim 2, wherein:

the second locking mechanism comprises a bushing body with a circular convex wall and arranged on the transmission shaft, and a circular wall arranged on the inner wall of the extension sleeve, a second elastic component is arranged on the bushing body, a second static friction sheet is arranged between the circular convex wall and the circular wall, the second elastic component is provided with a driving end which penetrates through the circular convex wall and is connected with the second static friction sheet,

and one side of the second elastic assembly, which deviates from the annular convex wall, is provided with a second piston body, and the shell is provided with a second oil injection part for injecting oil to drive the second piston body to axially move in the direction deviating from the annular wall.

4. The two-speed planetary transmission as in claim 3, wherein:

and a push-pull sleeve is arranged between the second elastic assembly and the second piston body.

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