CN202867600U

CN202867600U - Coupler

Info

Publication number: CN202867600U
Application number: CN 201220462921
Authority: CN
Inventors: 吴洪江; 邵生勤
Original assignee: YINCHUAN GREATWALL HYDRAULICS CO Ltd
Current assignee: YINCHUAN GREATWALL HYDRAULICS CO Ltd
Priority date: 2012-09-12
Filing date: 2012-09-12
Publication date: 2013-04-10
Anticipated expiration: 2022-09-12

Abstract

The utility model relates to a coupler. The coupler is characterized in that the coupler is a short shaft, one end of the short shaft is an inner hole formed along the axial direction, the inner hole is connected with a shaft matched with the inner hole through a spline, the other end of the short shaft is a boss shaped like a Chinese character 'yi' extending along the axial direction of the short shaft, and a groove shaped like a Chinese character 'yi' is arranged in the shaft end matched with the boss shaped like the Chinese character 'yi' along the axial direction. One end of the coupler is connected through the spline, and the other end of the coupler is of the structure that the boss shaped like the Chinese character 'yi is matched with the groove shaped like the Chinese character 'yi'. The structure can deliver rotational motion and torque and meanwhile enable the portion between the coupler and the shaft to move relative to each other along the radial direction, namely a certain movement freedom degree exists in the radial direction, and therefore harms caused by large coaxial errors can be avoided. The coupler has the advantages of being simple in structure and compact in connection, demands on coaxiality of two shafts being connected are low and the like.

Description

A kind of coupling

Technical field

The utility model relates to a kind of coupling.

Background technique

Coupling is driving shaft and the driven shaft that connects in the different institutions, makes it common rotation with the mechanical parts of transmitting torque, for different Environmental Conditions with when requiring, can adopt the coupling of different structure.In hydraulic system, for saving the space, usually adopt connecting sleeve that motor shaft and pump shaft are directly connected, utilize the key that is installed on the diaxon to come transmitting torque.This direct coupled mode not only can be saved the expense of coupling, and can save the shared space of coupling, makes overall simple compact, is more suitable for the occasion of limited space.But it is high that this connecting mode requires the installation coaxality of pump and motor, when coaxality does not reach when requiring, greatly reduced the working life of pump, tool ASSOCIATE STATISTICS, this reason even account for more than 60% of failure of pump rate.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, and the installation coaxality of the diaxon of required connection is required low a kind of coupling.

For achieving the above object, the technical solution of the utility model is: a kind of coupling, it is characterized in that coupling is a minor axis, the endoporus of one end of minor axis for opening vertically, the associated axle of this endoporus passes through spline joint, the in-line boss of the other end for axially stretching out along minor axis, the axle head that matches with above-mentioned in-line boss radially has the in-line groove.

The width of the in-line groove that above-mentioned axle head is radially opened is greater than the width of the in-line boss on the coupling.

Coupling one end of the present utility model is to adopt splined, between this connection larger gap is being arranged radially, can eliminate the pump damage that Disalignment causes; The structure that the other end adopts in-line boss and in-line groove to match, this structure can be transmitted larger moment of torsion than traditional singly-bound on the one hand; On the other hand, can make between coupling and the axle to relatively move in radial direction, namely in direction radially certain freedom of movement be arranged, so just further avoid the larger harm that causes of coaxial error; Be exactly that this structure is so that dismounting is simple, convenient for maintaining in addition.That this coupling has is simple in structure, it is compact to connect, the coaxality that is connected between the diaxon is required the characteristics such as low.

Description of drawings

Accompanying drawing 1 is structural representation of the present utility model;

Accompanying drawing 2 is the left view of the utility model accompanying drawing 1;

Accompanying drawing 3 is the utility model linkage structure schematic representation;

Accompanying drawing 4 is the A-A sectional view of the utility model accompanying drawing 3.

Embodiment

Shown in Fig. 1,2,3,4, coupling 1 is a minor axis, at the splined hole 2 of right-hand member for opening vertically of minor axis, the in-line boss 3 of left end for axially stretching out along minor axis.During connection, right-hand member axle 5 matches for splined shaft and splined hole, in-line groove and in-line boss that the end face of left end shaft 4 is radially opened match, the width of in-line groove is greater than the width of the in-line groove on the coupling, make protruding can the movement in the in-line groove on left end shaft of in-line on the coupling, eliminated the coaxial error between the diaxon of the left and right sides, but the while transmitting torque.

Coupling can adopt the forms such as common spline, involute splines to connect with the Connecting format of right-hand member axle 5.

Claims

1. coupling, it is characterized in that coupling (1) is a minor axis, the endoporus of one end of minor axis for opening vertically, the associated axle of this endoporus connects by spline (2), the in-line boss (3) of the other end for axially stretching out along minor axis, the axle head that matches with above-mentioned in-line boss radially has the in-line groove.

2. a kind of coupling according to claim 1 is characterized in that the width of the in-line groove that above-mentioned axle head is radially opened is greater than the width of the in-line boss on the coupling.