Hollow shaft and meshing sleeve connecting mechanism and power takeoff

Abstract

The utility model discloses a hollow shaft and meshing sleeve connecting mechanism and a power takeoff, the hollow shaft and meshing sleeve connecting mechanism comprises a hollow shaft and a meshing sleeve coaxially sleeved outside the hollow shaft, and a limiting assembly is arranged between the hollow shaft and the meshing sleeve; a plurality of first inner splines extending in the axial direction are arranged on the inner wall of the hollow shaft in the circumferential direction at equal intervals, a plurality of outer teeth extending in the axial direction are arranged on the outer wall of the hollow shaft in the circumferential direction at equal intervals, mounting grooves are formed in the outer teeth, and the limiting assemblies are arranged in the mounting grooves; a plurality of second inner splines extending in the axial direction are arranged on the inner wall of the meshing sleeve in the circumferential direction at equal intervals, and limiting grooves are formed in the second inner splines. Through the structural design, the engagement sleeve cannot freely move in the axial direction when the power takeoff is in the out-of-gear state, and therefore mistaken gear engagement caused by free sliding of the engagement sleeve of the power takeoff is effectively eradicated.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox technical field, concretely relates to a hollow shaft and meshing cover connecting mechanism and power takeoff. BACKGROUND

[0002] With the growing of power takeoff market, the customer has higher demand to the use performance of power takeoff, in the commonly used power takeoff, the clearance fit is used between the fork and the meshing cover, the meshing cover cannot be positioned on the hollow shaft in the axial direction, in the whole vehicle operation process, the power takeoff can appear the misengagement due to the axial free sliding of the meshing cover in the off state, finally leads to the security risk, and urgently needs improvement. SUMMARY

[0003] In view of the above-mentioned defects and deficiencies in the prior art, the utility model aims at providing a hollow shaft and meshing cover connecting mechanism and power takeoff to solve the technical problem of misengagement due to the axial free sliding of the meshing cover for power takeoff in the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A hollow shaft and meshing cover connecting mechanism, comprising a hollow shaft and a meshing cover coaxially sleeved outside the hollow shaft, a limiting assembly is arranged between the hollow shaft and the meshing cover.

[0006] A plurality of first inner splines extending in the axial direction are arranged on the inner wall of the hollow shaft at equal intervals in the circumferential direction, a plurality of outer teeth extending in the axial direction are arranged on the outer wall of the hollow shaft at equal intervals in the circumferential direction, the outer teeth are provided with mounting grooves, and the limiting assembly is arranged in the mounting grooves.

[0007] A plurality of second inner splines extending in the axial direction are arranged on the inner wall of the meshing cover at equal intervals in the circumferential direction, and the second inner splines are provided with limiting grooves.

[0008] The utility model also has the following technical features:

[0009] Specifically, the second inner spline is a involute spline.

[0010] Further, the mounting groove comprises a cylindrical groove and a semispherical groove which are communicated, and the radius of the semispherical groove is 4.25mm.

[0011] Further, the width of the groove bottom of the limiting groove is 4.8mm.

[0012] Further, a 110° chamfer is formed between the first side edge and the second side edge of the limiting groove, and the first side edge and the second side edge are oppositely arranged.

[0013] Further, the limiting assembly comprises a spring body and a spring joint, and the spring body is connected through the spring joint at both ends.

[0014] The application also protects a power take-off device, which is provided with the above-mentioned heart sleeve and engaging sleeve connecting mechanism.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] The utility model discloses simple structure, convenient to use, through structural design, especially through installation groove, limit slot and the limit assembly of setting in installation groove, realize to the axial location of engaging sleeve, and the engaging sleeve does not move along the axial freedom in the off state of power take-off device, thereby effectively prevent the mistake of hanging the gear caused by the free sliding of the engaging sleeve of power take-off device, improve the security of whole car operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0018] Fig. 2 It is the hollow shaft sectional view;

[0019] Fig. 3 It is the sectional view of engaging sleeve.

[0020] The figure mark represents:

[0021] 1-hollow shaft, 2-engaging sleeve, 3-limiting assembly, 4-first internal spline, 5-outer tooth, 6-installation groove, 7-second internal spline, 8-limiting groove;31-spring body, 32-spring joint;61-cylindrical slot, 62-hemispherical slot;81-first side, 82-second side.

[0022] The specific content of the utility model is further explained and described in detail in combination with the following embodiments. DETAILED DESCRIPTION

[0023] The following gives the specific embodiment of the utility model, and it is explained that the utility model is not limited to the following specific embodiment, and equivalent transformation on the technical scheme of the application falls into the protection scope of the utility model.

[0024] When the utility model is described in the direction, the direction or position relation of the term "up", "down", "front", "back", "left", "right" etc. is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular direction, a particular direction configuration and operation, therefore it can not be understood as the limitation of the utility model.

[0025] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. Unless otherwise stated, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly interpreted, for example, can be fixed connection, can also be detachable connection or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Unless otherwise specified, the components in the utility model are commercially available.

[0027] Embodiment 1

[0028] According to the above technical solution, as shown in the embodiment, a hollow shaft and meshing sleeve connecting mechanism is provided, which comprises a hollow shaft 1 and a meshing sleeve 2 coaxially sleeved outside the hollow shaft 1, and a limiting assembly 3 is arranged between the hollow shaft 1 and the meshing sleeve 2. Figs. 1 to 3

[0029] A plurality of first inner splines 4 extending in the axial direction are arranged on the inner wall of the hollow shaft 1 at equal intervals in the circumferential direction, and a plurality of outer teeth 5 extending in the axial direction are arranged on the outer wall of the hollow shaft 1 at equal intervals in the circumferential direction, and the outer teeth 5 are provided with mounting grooves 6, and the limiting assembly 3 is arranged in the mounting grooves 6.

[0030] A plurality of second inner splines 7 extending in the axial direction are arranged on the inner wall of the meshing sleeve 2 at equal intervals in the circumferential direction, and the second inner splines 7 are provided with limiting grooves 8. The mounting grooves 6 and the limiting grooves 8 are arranged opposite to each other, and the limiting assembly 3 is arranged in the accommodation space formed between the mounting grooves 6 and the limiting grooves 8, and the meshing sleeve 6 cannot move freely in the circumferential direction by means of the limiting of the limiting assembly 3 in the limiting grooves 8 on the inner wall of the meshing sleeve 2, which structurally prevents the mis-hanging of the power take-off.

[0031] As a preferred scheme of the embodiment, the second inner spline 7 is a involute spline.

[0032] As a preferred scheme of the embodiment, the mounting groove 6 comprises a cylindrical groove 61 and a hemispherical groove 62 arranged in communication, and the radius of the hemispherical groove 62 is 4.25mm.

[0033] As a preferred scheme of the embodiment, the groove bottom width of the limiting groove 8 is 4.8mm.

[0034] ​As a preferred scheme of the embodiment, a 110° chamfer is formed between the first side edge 81 and the second side edge 82 of the limiting groove 8, and the first side edge 81 and the second side edge 82 are oppositely arranged. The design of the chamfer is beneficial to preventing the limiting assembly from being stuck when entering or exiting the limiting groove 8.

[0035] As a preferred scheme of the embodiment, the limiting assembly 3 comprises a spring body 31 and a spring joint 32, and the spring body 31 is connected at both ends through the spring joint 32. When installed, one end of the spring joint 32 can be selected into the spring body 31 to realize the connection of the spring joint 32 and the spring body 31, and then the other end of the spring joint 32 is selected into the spring body 31 to complete the assembly.

[0036] The use process of the utility model is as follows:

[0037] When the utility model is used: the spring body 31 is installed into the installation groove 6, the installation of both ends of the spring body 31 is completed by means of the spring joint 32, the meshing sleeve 2 is coaxially sleeved outside the hollow shaft 1, the axial limiting of the meshing sleeve 2 is realized by means of the limiting assembly arranged in the installation groove 6, and it is ensured that the meshing sleeve 2 can only move along the axial direction under the driving of the shift fork.

[0038] Other embodiments of the utility model further disclose a power takeoff, and the power takeoff is provided with the hollow shaft and meshing sleeve connecting mechanism.

[0039] The above only describes preferred embodiments of the utility model and is not used for limiting the utility model; for those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hollow shaft and engaging sleeve connecting mechanism, comprising a hollow shaft (1) and an engaging sleeve (2) coaxially sleeved outside the hollow shaft (1), characterized in that, The hollow shaft (1) is provided with a limiting assembly (3) and the engaging sleeve (2); A plurality of first inner splines (4) extending along the axial direction are arranged on the inner wall of the hollow shaft (1) at equal intervals in the circumferential direction, a plurality of outer teeth (5) extending along the axial direction are arranged on the outer wall of the hollow shaft (1) at equal intervals in the circumferential direction, the outer teeth (5) are provided with mounting grooves (6), and the limiting assembly (3) is arranged in the mounting grooves (6); A plurality of second inner splines (7) extending along the axial direction are arranged on the inner wall of the engaging sleeve (2) at equal intervals in the circumferential direction, and the second inner splines (7) are provided with limiting grooves (8).

2. The hollow shaft and mating sleeve connection of claim 1, wherein, The second inner splines (7) are involute splines.

3. The hollow shaft and mating sleeve connection of claim 1 wherein, The mounting grooves (6) include a cylindrical groove (61) and a semispherical groove (62) which are communicated, and the radius of the semispherical groove (62) is 4.25 mm.

4. The hollow shaft and mating sleeve connection of claim 1 wherein, The width of the groove bottom of the limiting groove (8) is 4.8 mm.

5. The hollow shaft and mating sleeve connection of claim 1 wherein, A 110° chamfer is formed between the first side edge (81) and the second side edge (82) of the limiting groove (8), and the first side edge (81) and the second side edge (82) are oppositely arranged.

6. The hollow shaft and mating sleeve connection of claim 1 wherein, The limiting assembly (3) includes a spring body (31) and a spring joint (32), and the two ends of the spring body (31) are connected through the spring joint (32).

7. A power take-off characterized by, The power takeoff is provided with the hollow shaft and engaging sleeve connecting mechanism as claimed in any one of claims 1-6.

Images