CN2572093Y

CN2572093Y - Connection expansion sleeve quick assembling/disassembling by round nut

Info

Publication number: CN2572093Y
Application number: CN 02276502
Authority: CN
Inventors: 雷永志
Original assignee: 雷永志
Current assignee: Sichuan Dawn Machinery Co., Ltd.
Priority date: 2002-09-17
Filing date: 2002-09-17
Publication date: 2003-09-10
Anticipated expiration: 2012-09-17

Abstract

The utility model provides a connection expansion sleeve quickly assembled and disassembled by a round nut. The utility model is composed of an inner cone sleeve and an outer cone sleeve which are mutually matched, and a round nut which is assembled on the inner cone sleeve, wherein, a constriction expansion slot is arranged on the wall of the inner cone sleeve, and an extension expansion slot is arranged on the wall of the outer cone sleeve. When the round nut is tightly screwed, displacement is generated along an axial direction between the inner cone sleeve and the outer cone sleeve, the outer cone sleeve of extension and expansion is wedged in a hole of a wheel hub, the inner cone sleeve is contracted along a radial direction, and a wheel can be tightly fixed on an axis. When the utility model is disassembled, the round nut is quit, the inner cone sleeve and the outer cone sleeve are displaced along the axial direction, and the wheel can be disassembled conveniently. The utility model has the advantages of simple structure, convenient operation, use and labor saving, no key grooves on the axis and the wheel hub, no damnification of the machine intensity of component parts, no stress concentration, high mechanical transmission performance and long service life.

Description

A kind of connection swelling cover that loads and unloads fast by round nut

Technical field:

The utility model relates to mechanical technology, belongs to the coupling that wheel is fixedly connected on axle, specifically a kind of connection swelling cover that is loaded and unloaded fast by round nut.

Background technique:

Just present, in the common mechanical transmission, for axle and the wheel (for example belt pulley, gear, sprocket wheel etc.) that is enclosed within on the axle are fixed together the task of finishing transmitting movement and moment of torsion, using the most general joining method is to adopt dismountable key to connect, it is to be connected on the axle wheel is fastening by key, and wheel together rotates with axle.But, this key Placement exists the defective of dismounting inconvenience: the loading and unloading wheel mostly is that the mode that adopts manpower to beat bump is carried out, it is time-consuming to require great effort, labor strength is big, particularly when beaing bump, the less occasion of structure damages transmission shaft and wheel easily, the assembly precision of influence machinery when serious, especially machine uses corrosion comparatively will more require great effort during the dismounting wheel under the serious situation long-term, sometimes also need use special press mounting tool and could dismantle wheel, operation is trouble very.In addition, adopt the key ways of connecting on the wheel hub of axle and wheel, to set out keyway, not only weakened the mechanical strength of axle and wheel hub, and can produce stress at the position that axle and wheel hub are offered keyway and concentrate, occur crackle, crack even opening easily at the keyway place of axle or wheel hub and directly cause mechanical failure, have a strong impact on the proper functioning life-span of machine.

Summary of the invention:

The utility model be propose on the basis of existing technology a kind of simple in structure, the connection swelling cover that labour-saving easy for operation is loaded and unloaded fast by round nut, it not be used on transmission shaft and the wheel hub and offers keyway, the mechanical strength of harmless part itself, unstressed concentrating, guarantee the installation precision of machinery, it is achieved by the following technical solution: it is by the inner conical drogue that cooperatively interacts, external conical sleeve constitutes with the round nut that is fitted to inner conical drogue, it is characterized in that: done on the wall of inner conical drogue and shunk the swelling seam, done expansion swelling seam on the wall of external conical sleeve, inner conical drogue is done the screw thread that matches with round nut, the round nut place that is assemblied in inner conical drogue is equipped with floor clip, can prevent effectively that round nut is loosening, when installing and using: inner conical drogue is set on the transmission shaft, wheel is set on the external conical sleeve, put floor clip again and tighten round nut, in the process that screws round nut gradually, at this moment be between the inner conical drogue of taper fit and the external conical sleeve and produce displacement vertically, doing the external conical sleeve of expansion swelling seam expands in the hole of swelling wedging wheel hub gradually, do the inner conical drogue that shrinks the swelling seam and be extruded radially contraction deformation, can be fixedly linked in wheel on the transmission shaft firmly; During dismounting: unscrew and withdraw from round nut, at this moment be between the inner conical drogue of taper fit and the external conical sleeve and produce reverse displacement vertically, can dismantle down wheel easily.

Description of drawings:

Fig. 1 is a structural representation of the present utility model,

Fig. 2 is the A-A view of Fig. 1.

Embodiment:

A kind of connection swelling cover that loads and unloads fast by round nut that the utility model proposes, it is mainly by the inner conical drogue 1 that cooperatively interacts, external conical sleeve 2 constitutes with the round nut 4 that is fitted to inner conical drogue 1, done on the wall of inner conical drogue 1 and shunk swelling seam 9, done expansion swelling seam 10 on the wall of external conical sleeve 2, inner conical drogue 1 is done the screw thread 5 that matches with round nut 4, round nut 4 places that are assemblied in inner conical drogue 1 are equipped with floor clip 3, can prevent effectively that round nut 4 is loosening, it is manipulated like this: when wheel is installed, inner conical drogue 1 is set on the transmission shaft 8, the wheel hub 7 of wheel is set on the external conical sleeve 2, in the process that screws round nut 4 gradually, inner conical drogue 1 cooperates the conical surface 6 to produce axial displacements with external conical sleeve 2 edges, doing the external conical sleeve 2 of expansion swelling seam 10 expands in the hole of swelling wedging wheel hub 7 gradually, do the inner conical drogue 1 that shrinks swelling seam 9 and be extruded radially contraction deformation, can be connected on the transmission shaft 8 wheel hub 7 is fastening firmly; During dismounting: unscrew and withdraw from round nut 4, produce reverse displacement vertically between the inner conical drogue 1 of tapered cooperation at this moment and the external conical sleeve 2, can dismantle down wheel easily.The connection swelling cover by the quick loading and unloading of round nut that utilization the utility model proposes is specially adapted to the less mechanical transmission occasion of structure, can guarantee the installation precision of mechanical parts, improves mechanical transmission performance.

Claims

1. one kind by the quick connection swelling cover of loading and unloading of round nut, it mainly is made of the inner conical drogue that cooperatively interacts (1), external conical sleeve (2) and the round nut (4) that is fitted to inner conical drogue (1), it is characterized in that: done on the wall of inner conical drogue (1) and shunk swelling seam (9), done expansion swelling seam (10) on the wall of external conical sleeve (2).