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Assembled hollow camshaft

A camshaft and assembly technology, which is applied in the direction of valve device, engine components, machine/engine, etc., can solve the problems of cam and shaft performance influence, inconvenient use, long time, etc., and achieve simple disassembly, convenient use, and easy activity adjustment Effect

Inactive Publication Date: 2019-05-28
JIAOZUO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the press-fitting process, an interference fit is usually used between the hollow mandrel and the cam, which requires the cam to be heated until the center hole expands and the installation can be completed. This connection method is inconvenient to use and takes a long time, and Long-term heating is required for assembly and disassembly, which may affect the performance of the cam and shaft

Method used

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  • Assembled hollow camshaft
  • Assembled hollow camshaft
  • Assembled hollow camshaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see Figure 1~4 , in an embodiment of the present invention, an assembled hollow camshaft includes a shaft body 1, multiple sets of cams 2 sleeved on the periphery of the shaft body 1, and shaft plugs 4 symmetrically arranged at both ends of the shaft body 1, and the cams 2 pass through The connecting body 5 that is movably clamped in the gap between the cam 2 and the shaft body 1 cooperates with the back plate 53 and is fixed on the periphery of the shaft body 1, and the shaft plug 4 is movably plugged into the port of the shaft body 1 and is elastically adjustable.

[0022] The shaft body 1 is a hollow pipe body, and a flange 3 is sheathed on one side of the periphery of the shaft body 1 .

[0023] The periphery of the shaft body 1 is provided with a plurality of groups of shaft table tooth grooves 11 in a circular distribution; the cam 2 is sleeved on the periphery of the shaft body 1, and the middle part of the cam 2 is embedded with a tooth groove 11 opposite to th...

Embodiment 2

[0028] see Figure 5 , in an embodiment of the present invention, an assembled hollow camshaft, the shaft plug 4 includes a concentric ring 41 and an inner ring 43 connected by multiple sets of connecting cylinders 42, and the connecting cylinders 42 are provided with multiple sets, The connecting cylinder 42 is provided with a limit rod 44 that moves through the circular ring 41 through a spring elastic connection; the right side of the inner ring 43 is distributed in a circular shape and connects one end of multiple groups of spring steel bars 45, and the spring steel bars 45 is wrapped with a rubber cushion, the other end of the spring steel bar 45 is welded with a gasket 46, and the middle part of the inner ring 43 is threaded and fitted with an adjusting screw 47, and the end of the adjusting screw 47 is connected to the Pad 46 sides are rotatably connected by bearings. In this way, according to the shaft body 1 with different inner diameters, it can be automatically pos...

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Abstract

The invention discloses an assembled hollow camshaft. The assembled hollow camshaft comprises a shaft body, multiple groups of cams arranged at the periphery of the shaft body in a sleeving mode and shaft plugs symmetrically arranged at the two ends of the shaft body; the cams are fixed to the periphery of the shaft body in the mode of cooperating with back plates through connecting bodies movablyclamped into gaps formed between the cams and the shaft body; and the shaft plugs are movably plugged into ports of the shaft body and can be elastically adjusted. According to the assembled hollow camshaft, the cams can be assembled and connected to the periphery of the shaft body through the connecting bodies, use is convenient, disassembling is easy, and connection is stable; and automatic positioning can be achieved through elastic telescoping of limiting rods in connecting cylinders, adjusting screws are rotated to drive gaskets to horizontally move, when the gaskets are close to inner rings, spring steel strips are compressed to be bent, when the spring steel strips are bent, rubber layers arranged at the peripheries of the spring steel strips in a wrapping mode gradually expand andare attach to and make contact with the inner wall of the shaft body, therefore, the shaft plugs which can be movably adjusted according to the diameter of the shaft body are formed, use is more flexible and convenient, and movable adjustment is convenient.

Description

technical field [0001] The invention relates to the field of automobile engines, in particular to an assembled hollow camshaft. Background technique [0002] The car engine is the device that provides power for the car. It is the heart of the car and determines the power, economy, stability and environmental protection of the car. According to different power sources, automotive engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids. [0003] Assembled hollow camshaft is a new type of auto parts developed in recent years. It is a component made by manufacturing the cam and the hollow mandrel separately, and then combined by press-fitting technology; it has light weight, low cost, and is suitable for Popular for mass production. [0004] During the press-fitting process, an interference fit is usually used between the hollow mandrel and the cam, which requires the cam to be heated until the center hole expands and the installation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/047
Inventor 孟超孙备王翠芳王珊昝辉
Owner JIAOZUO UNIV