CN211550325U

CN211550325U - Transmission shaft of agricultural machine

Info

Publication number: CN211550325U
Application number: CN201922437677.2U
Authority: CN
Inventors: 颜永生; 颜勇; 谭平; 高静闻
Original assignee: Chongqing Transmission Shaft Co ltd
Current assignee: Chongqing Transmission Shaft Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-22
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an agricultural machinery transmission shaft, which comprises a spline shaft, a spline sleeve fork and a shaft tube, wherein the spline shaft is connected with the spline sleeve fork in a sliding manner, the spline sleeve fork is connected with a first flange fork through a universal joint, the spline shaft is connected with the shaft tube, a welding fork is arranged at the end part of the shaft tube, and the welding fork is connected with a second flange fork through the universal joint; the universal joint is an inner clamping type universal joint and comprises a cross shaft and a bearing bowl sleeved at the end part of the cross shaft, a roller pin is arranged in the cross shaft and the bearing bowl, a check ring and a sealing ring are arranged at the end part of the roller pin close to the cross shaft, the check ring is abutted against the end part of the bearing bowl, the sealing ring is arranged between the check ring and a shaft shoulder of the cross shaft, and a groove is formed in the side surface of the sealing ring close to the shaft shoulder of the cross shaft. The utility model provides a pair of agricultural machinery transmission shaft, its is rational in infrastructure, and the universal joint adopts inside callipers formula universal joint, has the advantage that the gyration diameter is little, the quality is light.

Description

Transmission shaft of agricultural machine

Technical Field

The utility model belongs to the technical field of the car transmission, a agricultural machinery transmission shaft is related to.

Background

The transmission shaft is an important part for transmitting power in an automobile transmission system, and the transmission shaft, a gearbox and a drive axle are used for transmitting the power of an engine to wheels so that an automobile generates driving force.

The transmission shaft in the prior art has overlarge weight, and the application range of the transmission shaft is limited to a certain extent; moreover, the sealing structure arranged at the sliding connection position of the spline shaft and the spline sleeve on the transmission shaft is complex, so that the use and installation of the transmission shaft are influenced; in addition, the spline shaft is seriously abraded after being used for a period of time, and the service life of the transmission shaft is influenced to a certain extent.

Therefore, an agricultural machine transmission shaft is needed to be designed to solve the existing technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the partial technical problem that exists among the prior art to a certain extent at least, the agricultural machinery transmission shaft that provides, its is rational in infrastructure, and the universal joint adopts inside callipers formula universal joint, has that diameter of gyration is little, the light advantage of quality, has good spreading value.

In order to solve the technical problem, the utility model provides an agricultural machinery transmission shaft, it includes integral key shaft, spline housing yoke and central siphon, integral key shaft and spline housing yoke sliding connection, spline housing yoke passes through the universal joint and is connected with first flange yoke, integral key shaft and central siphon are connected, the tip of central siphon is provided with the welding fork, the welding fork passes through the universal joint and is connected with second flange yoke; the universal joint is an inner clamping type universal joint and comprises a cross shaft and a bearing bowl sleeved at the end part of the cross shaft, a roller pin is arranged in the cross shaft and the bearing bowl, a check ring and a sealing ring are arranged at the end part of the roller pin close to the cross shaft, the check ring is abutted against the end part of the bearing bowl, the sealing ring is arranged between the check ring and a shaft shoulder of the cross shaft, and a groove is formed in the side surface of the sealing ring close to the shaft shoulder of the cross shaft.

In some embodiments, the grooves are triangular in cross-section with an opening having a width of 0.2mm to 0.5 mm.

In some embodiments, the retainer ring is an annular structure with an L-shaped cross section, and is clamped to the inner side wall of the bearing bowl.

In some embodiments, the retainer ring is made of viton, styrene butadiene rubber, neoprene, or silicone rubber.

In some embodiments, the agricultural machine drive shaft further comprises a guard assembly that is threadedly connected to the outer peripheral side of the spline yoke.

In some embodiments, the shield assembly includes a washer and a fastener, the fastener being an annular member with an L-shaped cross-section, wherein an inner side of a long side of the fastener is provided with threads and a short side of the fastener covers an outer side of the washer such that the washer abuts against an outer end face of the spline yoke.

In some embodiments, the fastener has a thread segment length no less than 3/4 of the fastener length.

In some embodiments, the outer side surface of the spline portion of the spline shaft is provided with a wear-resistant layer, and the wear-resistant layer is uniformly coated by powdery nylon.

In some embodiments, the wear layer has a thickness of 0.1mm to 5 mm.

In some embodiments, the wear layer has a thickness of 0.15mm to 0.45 mm.

The utility model discloses beneficial effect:

the utility model provides a pair of agricultural machinery transmission shaft, its is rational in infrastructure, and the universal joint adopts inside callipers formula universal joint, has the advantage that the gyration diameter is little, the quality is light.

Drawings

The above advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and do not limit the present invention, and in which:

FIG. 1 is a schematic structural view of a transmission shaft of an agricultural machine according to the present invention;

FIG. 2 is a schematic structural diagram of the universal joint of the present invention;

FIG. 3 is an enlarged partial view of the dashed box of FIG. 2;

FIG. 4 is a schematic view of the connection of the shield assembly of the present invention;

fig. 5 is a schematic structural diagram of the protection assembly of the present invention.

In the drawings, the reference numerals denote the following components:

10. a spline shaft;

20. a spline housing fork;

30. an axle tube;

40. a first flange yoke;

50. welding a fork;

60. a second flange yoke;

70. a guard assembly; 71. a gasket; 72. a fastener;

80. a universal joint; 81. a cross shaft; 82. a bearing bowl; 83. rolling needles; 84. a seal ring; 841. a groove; 85. and a retainer ring.

Detailed Description

Fig. 1 to 5 are related schematic views of a transmission shaft of an agricultural machine according to the present application, and the present invention will be described in detail with reference to the following embodiments and accompanying drawings.

The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It should be noted that for the sake of clarity in showing the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.

This application an agricultural machinery transmission shaft's relevant schematic diagram, as shown in fig. 1, the agricultural machinery transmission shaft includes integral key shaft 10, spline housing yoke 20 and central siphon 30, integral key shaft 10 and spline housing yoke 20 sliding connection, spline housing yoke 20 passes through universal joint 80 and is connected with first flange yoke 40, integral key shaft 10 is connected with central siphon 30, the tip of central siphon 30 is provided with welding fork 50, welding fork 50 passes through the universal joint and is connected with second flange yoke 60.

The universal joint 80 is an inner clamping type universal joint, and as shown in fig. 2 and 3, the universal joint includes a cross shaft 81 and a bearing bowl 82 sleeved on an end portion of the cross shaft 81, a roller pin 83 is arranged inside the cross shaft 81 and the bearing bowl 82, a retainer ring 85 and a seal ring 84 are arranged at an end portion of the roller pin 83 close to the cross shaft 81, the retainer ring 85 abuts against an end portion of the bearing bowl 82, the seal ring 84 is arranged between the retainer ring 85 and a shaft shoulder of the cross shaft 81, and a groove 841 is arranged on a side surface of the seal ring 84 close to the shaft shoulder of the cross shaft 81.

As shown in fig. 2, the cross shaft 81 is formed by two vertical hollow shafts which are integrally joined, a shaft shoulder is formed at the joint of the two hollow shafts, and the two ends of the hollow shafts are the shaft ends of the present invention. The hollow structure of cross shaft 81 is mainly designed for introducing grease, and in the embodiment shown in fig. 2, at least one shaft end is provided with a grease nipple; meanwhile, the hollow structure can reduce the weight of the universal joint and realize the light weight of the transmission shaft.

The utility model discloses in, the both ends of agricultural machinery transmission shaft set up inside callipers formula universal joint, have effectively reduced the diameter of gyration, have alleviateed the weight of universal joint, have further alleviateed the weight of transmission shaft, have realized the intensive quantification, have effectively promoted the performance of agricultural machinery transmission shaft.

As an embodiment of the present invention, the cross section of the groove 841 is triangular, and the width of the opening is 0.2mm-0.5 mm. Preferably, the width of the opening of the groove 841 is 0.3mm, and the groove 841 is arranged to facilitate the sufficient contact between the sealing ring 84 and the side surface of the shaft shoulder.

In another aspect of the present invention, the retainer ring 85 is an annular structure with an L-shaped cross section, and is clamped to the inner sidewall of the bearing bowl 82, as shown in fig. 3, so as to limit the needle roller 83 between the cross shaft 81 and the bearing bowl 82.

In some embodiments, the retainer ring 85 is made of viton, styrene butadiene rubber, neoprene, or silicone rubber. Preferably, the retainer ring 85 is made of fluororubber.

As an embodiment of the present invention, the agricultural machine transmission shaft further includes a protection component 70, and the protection component 70 is connected to the outer peripheral side of the spline housing fork 20 through a thread, as shown in fig. 4.

Fig. 5 is a schematic structural diagram of the protection assembly of the present invention, the protection assembly 70 includes a washer 71 and a fastener 72, the fastener 72 is an annular member with an L-shaped cross section, wherein the inner side of the long side of the fastener 72 is provided with a thread, and the short side cover of the fastener 72 is disposed on the outer side of the washer 71, so that the washer 71 abuts against the outer end surface of the spline housing fork 20 to effectively prevent impurities such as dust from entering the sliding connection between the spline shaft 10 and the spline housing fork 20. In one aspect of this embodiment, the fastener 72 has a thread segment length no less than 3/4 of the length of the fastener 72.

As another embodiment of the present invention, the outer side surface of the spline portion of the spline shaft 10 is provided with a wear-resistant layer, and the wear-resistant layer is formed by uniformly coating powdered nylon. The wear-resisting layer effectively improves the wear resistance of the spline shaft 10 and prolongs the service life of the transmission shaft.

In one aspect of this embodiment, the wear layer has a thickness of 0.1mm to 5 mm. Preferably, the thickness of the wear-resistant layer is 0.15mm-0.45mm, so that the wear resistance of the spline shaft 10 is improved, and the service life of the transmission shaft is prolonged.

Compared with the prior art, the transmission shaft of the agricultural machine has a reasonable structure, and the universal joint adopts an inner clamping type universal joint, so that the transmission shaft has the advantages of small rotation diameter and light weight; meanwhile, a protective component is arranged on the outer side of a sliding connection part formed by the spline shaft and the spline sleeve fork and is fixedly connected through threads, so that the installation convenience is improved; moreover, the spline portion coating of integral key shaft has the wearing layer, effectively prolongs the life of agricultural machinery transmission shaft.

The present invention is not limited to the above embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is included in the technical solution that is the same as or similar to the present invention.

Claims

1. The agricultural machine transmission shaft is characterized by comprising a spline shaft, a spline sleeve fork and a shaft tube, wherein the spline shaft is connected with the spline sleeve fork in a sliding manner, the spline sleeve fork is connected with a first flange fork through a universal joint, the spline shaft is connected with the shaft tube, a welding fork is arranged at the end part of the shaft tube, and the welding fork is connected with a second flange fork through the universal joint; the universal joint is an inner clamping type universal joint and comprises a cross shaft and a bearing bowl sleeved at the end part of the cross shaft, a roller pin is arranged in the cross shaft and the bearing bowl, a check ring and a sealing ring are arranged at the end part of the roller pin close to the cross shaft, the check ring is abutted against the end part of the bearing bowl, the sealing ring is arranged between the check ring and a shaft shoulder of the cross shaft, and a groove is formed in the side surface of the sealing ring close to the shaft shoulder of the cross shaft.

2. The agricultural machine drive shaft of claim 1, wherein the groove is triangular in cross section and has an opening width of 0.2mm to 0.5 mm.

3. The agricultural machine transmission shaft according to claim 1, wherein the retainer ring is an annular structure with an L-shaped section, and is clamped on the inner side wall of the bearing bowl.

4. The agricultural machine drive shaft of claim 1, wherein the retainer ring is made of viton, styrene butadiene rubber, neoprene, or silicone rubber.

5. The agricultural machine drive shaft of claim 1, further comprising a guard assembly threadedly connected to a peripheral side of the spline housing fork.

6. The agricultural drive shaft of claim 5, wherein the guard assembly includes a washer and a fastener, the fastener being an annular member with an L-shaped cross-section, wherein an inner side of a long side of the fastener is provided with threads and a short side of the fastener covers an outer side of the washer such that the washer abuts against an outer end face of the spline yoke.

7. The agricultural drive shaft of claim 6, wherein the fastener has a thread length no less than 3/4 of the fastener length.

8. The agricultural machine transmission shaft according to claim 1, wherein an outer side surface of the spline portion of the spline shaft is provided with a wear-resistant layer, and the wear-resistant layer is uniformly coated with powdered nylon.

9. The agricultural machine drive shaft of claim 8, wherein the wear layer has a thickness of 0.1mm to 5 mm.

10. The agricultural machine drive shaft of claim 9, wherein the wear layer has a thickness of 0.15mm to 0.45 mm.