CN211398350U

CN211398350U - Auxiliary box transition sleeve

Info

Publication number: CN211398350U
Application number: CN201922487174.6U
Authority: CN
Inventors: 丁访月; 陈志约
Original assignee: Qijiang Gear Transmission Co Ltd
Current assignee: Chongqing Qichi gear Research Institute Co.,Ltd.
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-01
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a derailleur technical field specifically discloses auxiliary box transition cover, including combining the circle, combine the circle including the preceding terminal surface that is close to planetary gear mechanism and the rear end face that is close to the synchronous ware, be equipped with a plurality of outer teeth that are close to preceding terminal surface on the outer wall that combines the circle, a plurality of outer teeth along the circumference equipartition that combines the circle, form outer tooth's socket between the outer tooth, be equipped with a plurality of inner teeth that are close to the rear end face on the inner wall that combines the circle, a plurality of inner teeth along the circumference equipartition that combines the circle, tooth's socket in forming. The transition sleeve in this patent not only plays the thrust effect, also plays the effect of connecting synchronizer and planetary gear mechanism simultaneously.

Description

Auxiliary box transition sleeve

Technical Field

The utility model relates to a derailleur technical field, in particular to auxiliary tank transition cover.

Background

The auxiliary transmission is also called auxiliary box, and is an optional transmission attached to the main transmission, and its function is to reduce the number of gears of the transmission and continuously enlarge the transmission ratio range, and is mostly used in heavy-duty truck, and when the heavy-duty truck is unloaded, it does not need very large driving torque, but needs higher running speed, and in order to save fuel, at this time, the truck is engaged into the high-speed gear of the auxiliary transmission, on the contrary, when the truck is low-speed, it is engaged into the low-speed gear to increase torque. The auxiliary box is internally provided with a synchronizer and a planetary gear mechanism, wherein the synchronizer is connected with the planetary gear mechanism through a sliding sleeve, the existing sliding sleeve is usually arranged in a split mode, and the thrust action of the split sliding sleeve on the planetary gear mechanism is small.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vice case transition cover to the sliding sleeve that the split set up among the solution prior art problem under to planetary gear mechanism's thrust.

In order to achieve the above purpose, the technical scheme of the utility model is that:

auxiliary box transition cover, including combining the circle, combine the circle including the preceding terminal surface that is close to planetary gear mechanism and the rear end face that is close to the synchronous ware, be equipped with a plurality of outer teeth that are close to preceding terminal surface on the outer wall that combines the circle, a plurality of outer teeth along the circumference equipartition that combines the circle, form outer tooth's socket between the outer tooth, be equipped with a plurality of inner teeth that are close to the rear end face on the inner wall that combines the circle, a plurality of inner teeth along the circumference equipartition that combines the circle, form interior tooth's socket.

The technical principle and the effect of the technical scheme are as follows:

when the synchronizer is installed, the inner teeth are meshed with a tooth holder of the synchronizer, the outer teeth are meshed with a gear ring in the planetary gear mechanism, and the shifting fork shifts the combined ring to slide towards the synchronizer or the planetary gear mechanism, so that a good thrust effect is achieved, and meanwhile, the synchronizer and the planetary gear mechanism are connected.

Furthermore, a boss close to the rear end face is arranged on the outer wall of the combination ring, and a ring groove is formed between the boss and the external teeth.

Has the advantages that: the ring groove is arranged to limit the shifting fork, so that the shifting fork can be shifted to be combined with the ring to slide better.

Further, the side of the boss close to the external teeth is a slope inclined towards the external teeth.

Has the advantages that: the arrangement of the inclined plane is convenient for installing the shifting fork.

Further, the outer teeth and the inner teeth are straight teeth.

Has the advantages that: the outer teeth and the inner teeth are both straight teeth, so that the outer teeth and the inner teeth can better slide on a gear seat of the synchronizer or a gear ring of the planetary gear mechanism.

Furthermore, the surfaces of the combination ring, the external teeth and the internal teeth are all provided with a carbonitriding layer.

Has the advantages that: the arrangement of the carbonitriding layer improves the wear resistance of the combination ring, the external teeth and the internal teeth.

Further, the depth of the carbonitrided layer is not less than 0.5 mm.

Has the advantages that: the carbonitrided layer is set to be not less than 0.5mm to ensure the wear resistance of the bonding ring, the external teeth and the internal tooth surface.

Furthermore, the combination ring comprises a small-diameter section close to the front end face of the combination ring and a large-diameter section close to the rear end face of the combination ring, and the diameter of the small-diameter section is smaller than that of the large-diameter section.

Has the advantages that: the small diameter section is arranged in such a way that the combination ring can be prevented from completely sliding out of the synchronizer.

Further, a transition surface is arranged between the small-diameter section and the large-diameter section, and the transition surface is an inclined surface inclined towards the large-diameter section.

Has the advantages that: the transition surface between the small-diameter section and the large-diameter section is set to be an inclined surface, so that large impact is avoided between the synchronizer and the transition surface.

Furthermore, two end faces, far away from the meshing face, of the internal teeth and the external teeth are provided with cambered surfaces protruding outwards.

Has the advantages that: the arrangement enables the inner teeth and the tooth base of the synchronizer or the outer teeth and the gear ring of the planetary gear mechanism to slide smoothly, and avoids the problems of jamming or collision.

Further, the cambered surface is tangent to the meshing surface of the external teeth or the internal teeth.

Has the advantages that: the smoothness of the sliding is further improved.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a cross-sectional view taken along the line a-a in fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the combined ring comprises a combined ring 1, a front end face 2, a rear end face 3, external teeth 4, external tooth grooves 5, internal teeth 6, internal tooth grooves 7, a boss 8, a ring groove 9, an arc surface 10, a small-diameter section 11, a large-diameter section 12 and a transition surface 13.

Example 1 is substantially as shown in figures 1 and 2 of the accompanying drawings:

auxiliary box transition cover, including combining circle 1, combine circle 1 including being close to planetary gear mechanism's preceding terminal surface 2 and the rear end face 3 that is close to the synchronous ware, integrated into one piece has a plurality of outer teeth 4 that are close to preceding terminal surface 2 on the outer wall that combines circle 1, a plurality of outer teeth 4 are along the circumference equipartition that combines circle 1, form outer tooth's socket 5 between the outer tooth 4, a plurality of inner teeth 6 that are close to rear end face 3 are formed integrally on the inner wall that combines circle 1, a plurality of inner teeth 6 are along the circumference equipartition that combines circle 1, form internal tooth's socket 7 between the adjacent inner tooth 6, outer tooth 4 is the straight-tooth with inner tooth 6.

The outside of the combination ring 1 is also integrally formed with a boss 8 close to the rear end face 3, a ring groove 9 is formed between the boss 8 and the external teeth 4, one side of the boss 8 close to the external teeth 4 is an inclined surface inclined towards the external teeth 4, as shown in fig. 3, two end faces (non-meshing faces) of the external teeth 4 and the internal teeth 6 are both provided with an arc surface 10 protruding outwards, the arc surface 10 is tangent to the meshing face of the external teeth 4 or the internal teeth 6, and the surfaces of the combination ring 1, the external teeth 4 and the internal teeth 6 are all provided with a carbonitriding layer with the depth not lower than 0.5 mm.

During installation, the internal teeth 6 are meshed with a tooth holder of the synchronizer, the external teeth 4 are meshed with a gear ring in the planetary gear mechanism, the shifting fork is clamped in the ring groove 9, and the shifting fork shifts the combination ring 1 to slide towards the synchronizer or the planetary gear mechanism, so that the anti-thrust effect is achieved, and meanwhile, the effect of connecting the synchronizer with the planetary gear mechanism is also achieved.

Example 2 is substantially as shown in figure 2:

the difference from example 1 is that: including path section 11 and major diameter section 12 in combining circle 1, path section 11's diameter is less than major diameter section 12, and path section 11 is close to the preceding terminal surface 2 that combines circle 1, and major diameter section 12 is close to the rear end face 3 that combines

circle

1, and 6 homogeneous bodies of internal tooth shape is on major diameter section 12, is equipped with the transition face 13 between path section 11 and the major diameter section 12, and wherein the inclined plane of transition face 13 for the slope towards major diameter section 12.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Auxiliary tank transition cover, its characterized in that: including combining the circle, combine the circle including the preceding terminal surface that is close to planetary gear mechanism and the rear end face that is close to the synchronous ware, be equipped with a plurality of outer teeth that are close to preceding terminal surface on the outer wall that combines the circle, a plurality of outer teeth along the circumference equipartition that combines the circle, form outer tooth's socket between the outer tooth, be equipped with a plurality of inner teeth that are close to the rear end face on the inner wall that combines the circle, a plurality of inner teeth along the circumference equipartition that combines the circle, tooth's socket in forming.

2. The transition sleeve of claim 1, wherein: and a boss close to the rear end face is arranged on the outer wall of the combination ring, and an annular groove is formed between the boss and the external teeth.

3. The transition sleeve of claim 2, wherein: and one side of the boss close to the external teeth is an inclined surface inclined towards the external teeth.

4. The transition sleeve of claim 3, wherein: the outer teeth and the inner teeth are straight teeth.

5. The transition sleeve of claim 4, wherein: and carbonitriding layers are arranged on the surfaces of the combination ring, the outer teeth and the inner teeth.

6. The transition sleeve of claim 5, wherein: the depth of the carbonitriding layer is not less than 0.5 mm.

7. The transition sleeve of claim 6, wherein: the combined ring comprises a small-diameter section close to the front end face of the combined ring and a large-diameter section close to the rear end face of the combined ring, and the diameter of the small-diameter section is smaller than that of the large-diameter section.

8. The transition sleeve of claim 7, wherein: a transition surface is arranged between the small-diameter section and the large-diameter section, and the transition surface is an inclined surface inclined towards the large-diameter section.

9. The transition sleeve of claim 8, wherein: and two end surfaces of the internal teeth and the external teeth, which are far away from the meshing surface, are respectively provided with an arc surface protruding outwards.

10. The transition sleeve of claim 9, wherein: the cambered surface is tangent to the meshing surface of the external teeth or the internal teeth.