Cross shaft universal joint

Abstract

The universal joint comprises a cross seat, a lubricating oil nozzle, an oil cavity and coupling structures, the lubricating oil nozzle penetrates through one end of the cross seat to be fixedly arranged, the oil cavity is formed in the cross seat and communicated with the lubricating oil nozzle, and the coupling structures are arranged on the left side and the right side of the cross seat. The coupling structure comprises an extension seat, fixing shafts, an oil hole, a roller, a limiting groove, an oil seal, an oil seal baffle disc and a lubricating oil channel, the extension seat is fixedly arranged on the cross seat, and the fixing shafts are fixedly arranged above the tail end of the extension seat and are symmetrically arranged in two groups. The utility model belongs to the technical field of universal joints, particularly relates to a cross shaft universal joint, and effectively solves the problems that cross connecting shafts of the cross shaft universal joint are on the same plane, universal joint forks can only rotate up and down or left and right after being connected, and when the universal joint forks simultaneously rotate up and down and left and right, the two groups of universal joint forks are extruded and deformed, and the service life of the universal joint forks is prolonged. And up-down and left-right rotation cannot be realized at the same time, so that the universal joint fork is damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of universal joint, specifically point to a cross axle universal joint. BACKGROUND

[0002] Universal joint is the machine part for realizing variable angle power transmission, and the cross axle universal joint is used for transmission between two transmission shafts intersecting with each other, and is widely applied to the transmission system of agricultural machinery.

[0003] However, the cross connecting shaft of the existing cross axle universal joint is in the same plane, and when the universal joint fork is connected, it can only rotate up and down or left and right, and when rotating up and down and left and right, the two groups of universal joint forks are squeezed and deformed, and cannot realize simultaneous up-down and left-right rotation, causing damage to the universal joint fork. UTILITY MODEL CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a cross axle universal joint, which effectively solves the problem that the cross connecting shaft of the cross axle universal joint is in the same plane, and when the universal joint fork is connected, it can only rotate up and down or left and right, and when rotating up and down and left and right, the two groups of universal joint forks are squeezed and deformed, and cannot realize simultaneous up-down and left-right rotation, causing damage to the universal joint fork.

[0005] The technical scheme adopted by the utility model is as follows: the utility model provides a cross axle universal joint, which comprises a cross seat, a lubricating oil nozzle, an oil cavity and a shaft coupling structure, the lubricating oil nozzle is fixedly arranged through one end of the cross seat, the oil cavity is arranged in the cross seat and is in communication with the lubricating oil nozzle, the shaft coupling structure is arranged on the left and right sides of the cross seat, the shaft coupling structure comprises an extension seat, a fixed shaft, an oil hole, a roller, a limiting groove, an oil seal, an oil seal baffle 11 and a lubricating oil channel, the extension seat is fixedly arranged on the cross seat, the fixed shaft is fixedly arranged on the top of the end of the extension seat and is symmetrically arranged in two groups, the oil hole is arranged through the top end of the fixed shaft, the roller is rotatably arranged on the fixed shaft, the limiting groove is recessed and arranged at the bottom of the roller, the oil seal is arranged between the roller and the limiting groove, and the oil seal baffle 11 is fixedly arranged below the oil seal.

[0006] Preferably, the cross seat is arranged in a regular hexagonal shape.

[0007] In order to better realize the effect of left and right extension, two groups of right extension are arranged on the extension seat, and two groups of left extension are arranged in front and back of the extension seat.

[0008] In order to achieve the purpose of cross connection faster, the fixed shaft is arranged in two groups up and down and two groups front and back, and the axis lines of the two groups of fixed shafts up and down are vertically arranged with the axis lines of the two groups of fixed shafts front and back.

[0009] Further, the extension seat and the fixed shaft are vertically arranged.

[0010] The beneficial effects achieved by the utility model are as follows: the cross axle universal joint provided by the utility model has the advantages that the oil holes of the fixed shaft are respectively extended leftward and rightward from the same horizontal plane, so that the two groups of universal joint forks will not cross each other after being connected, and the cross axle universal joint can rotate in any direction. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The utility model provides a whole structure schematic view of a cross axle universal joint;

[0012] Figure 2 Another view structure schematic view of a cross axle universal joint provided by the utility model;

[0013] Figure 3 Section structure schematic view of a cross axle universal joint provided by the utility model;

[0014] Figure 4 Another section structure schematic view of a cross axle universal joint provided by the utility model.

[0015] Wherein, 1, cross seat, 2, lubricating oil nozzle, 3, oil cavity, 4, shaft coupling structure, 5, extension seat, 6, fixed shaft, 7, oil hole, 8, roller, 9, limit groove, 10, oil seal, 11, oil seal baffle 11, 12, lubricating oil channel.

[0016] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation of the utility model. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, instead of all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor fall within the protection scope of the utility model.

[0018] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the utility model provide a kind of cross shaft universal joint, including cross seat 1, lubricating oil nozzle 2, oil cavity 3 and coupling structure 4, lubricating oil nozzle 2 is fixedly arranged at one end of cross seat 1, cross seat 1 is arranged as regular hexagon, oil cavity 3 is arranged in cross seat 1 inside and is arranged with lubricating oil nozzle 2 communication, coupling structure 4 is arranged on the left and right sides of cross seat 1, coupling structure 4 includes extension seat 5, fixed shaft 6, oil hole 7, cylinder 8, limit slot 9, oil seal 10, oil seal baffle 11 and lubricating oil channel 12, extension seat 5 is fixed on cross seat 1, two groups of extension seat 5 are arranged upwards and downwards to the right, while two groups of extension seat 5 are arranged forwards and backwards to the left, fixed shaft 6 is fixedly arranged on the top of the end of extension seat 5 and is symmetrically arranged, fixed shaft 6 is arranged in two groups upwards and downwards and two groups forwards and backwards, and the axis of the two groups of fixed shaft 6 upwards and downwards is vertically arranged with the axis of the two groups of fixed shaft 6 forwards and backwards, extension seat 5 is vertically arranged with fixed shaft 6, oil hole 7 is arranged through the top end of fixed shaft 6, cylinder 8 is rotatably arranged on fixed shaft 6, limit slot 9 is recessed arranged on the bottom of cylinder 8, oil seal 10 is arranged between cylinder 8 and limit slot 9, and oil seal baffle 11 is fixedly arranged below oil seal 10.

[0019] Specific use, lubricating oil channel 12 is pushed into oil cavity 3 through lubricating oil nozzle 2, then flows into oil hole 7 on fixed shaft 6 through lubricating oil channel 12, and then flows into the gap between fixed shaft 6 and cylinder 8 for lubrication, so that cylinder 8 rotates smoothly on fixed shaft 6, and oil seal baffle 11 fixes oil seal 10 to block the gap between cylinder 8 and fixed shaft 6, to prevent lubricating oil channel 12 from leaking, then the universal joint yoke is connected to the left and right cylinders 8 respectively, the coupling installation is completed, and the use is carried out, when the two groups of yokes rotate forwards and backwards, the phenomenon of coincidence does not occur, the simultaneous rotation upwards and downwards and left and right can be realized, the extrusion distortion is avoided, the transmission power is affected, and the above is the use process of the entire cross shaft universal joint.

[0020] It should be noted that, in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0021] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0022] The above describes the present application and its embodiments, which are not restrictive, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the spirit of the present application, without creative design, similar structure and embodiments to the technical solution, which should belong to the protection scope of the present application.

Claims

1. A cardan joint, characterized in that: The utility model provides cross seat, lubricating oil nozzle, oil cavity and shaft coupling structure, lubricating oil nozzle is fixedly arranged through one end of cross seat, oil cavity is arranged in cross seat and is communicated with lubricating oil nozzle arrangement, shaft coupling structure is arranged on the left and right sides of cross seat, shaft coupling structure includes extension seat, fixed shaft, oil hole, drum, limiting groove, oil seal, oil seal baffle and lubricating oil channel, extension seat is fixed on cross seat, fixed shaft is fixedly arranged on the top of extension seat end and is symmetrically arranged in two groups, oil hole is arranged through the top of fixed shaft, drum is rotatably arranged on fixed shaft, limiting groove is recessedly arranged on the bottom of drum, oil seal is arranged between the seam of drum and limiting groove, and oil seal baffle is fixedly arranged below oil seal.

2. A cardan joint according to claim 1, characterized in that: The cross seat is in the shape of regular hexagon.

3. A cardan joint according to claim 2, characterized in that: The extension seat is provided with two groups of rightward extensions upward and downward, and two groups of leftward extensions forward and backward.

4. A constant-velocity joint according to claim 3, wherein: The fixed shaft is provided with two groups of upper and lower fixed shafts and two groups of front and rear fixed shafts, and the axis of the upper and lower fixed shafts is perpendicular to the axis of the front and rear fixed shafts.

5. A constant-velocity joint according to claim 4, wherein: The extension seat is perpendicular to the fixed shaft.

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