CN201170266Y

CN201170266Y - Universal joint

Info

Publication number: CN201170266Y
Application number: CNU2008200796497U
Authority: CN
Inventors: 付志远
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-28
Filing date: 2008-03-28
Publication date: 2008-12-24
Anticipated expiration: 2018-03-28

Abstract

The utility model provides a universal spindle coupling. The universal spindle coupling comprises two half couplings; the two ends where the two half couplings are respectively provided with a co-axially axle hole, wherein the axle hole of one half coupling is co-axially and internally provided with a core body, while the circumference sidewall of the other half coupling is provided with three sphere holes and three spherical particles evenly; the three spherical particles are rotationally fixed in the three sphere holes on an inner body; the inner body is inserted into the axle hole of the outer body; one side of the spherical particles is against a holes wall of outer body, while the other side is against the inner three grooves, matched with the surfaces of the spherical particles, on the axle body; and a clamp structure is arranged on the outer body, thereby making the inner body has a axial hole which is inside the outer body, and can displace axially as well as clamp the outer body. The universal spindle coupling has the advantages of low noise and small vibration.

Description

A kind of universal shaft coupling

Technical field

The utility model relates to a kind of universal shaft coupling.

Background technique

Universal shaft coupling of the prior art is generally the universal shaft coupling of cross axle ten thousand types.There is the excessive shortcoming of vibration in this universal shaft coupling all by four point locations in shaft drive, can not use the occasion at high-speed motion.

The model utility content

The purpose of this utility model is to improve the deficiencies in the prior art, provides that a kind of vibration is little, noise is low, can use the universal joint in high rotating speed occasion.

Mother of the present utility model is achieved in that

The universal shaft coupling that the utility model provides comprises two half-couplings, two terminations that combine of these two half-couplings respectively are provided with the axial bore of a concentric, the end that has axial bore on one of them half-coupling constitutes outer body, coaxial heart sets firmly a core body in its axial bore, the end that another half-coupling has axial bore constitutes interior body, the external diameter of body is less than the internal diameter of the axial bore of described outer body in described, in this on circumferential side wall of body, at uniform three the penetrating spherical pores of circumferencial direction, the centre of sphere of these three spherical pores is on same cross section; This universal shaft coupling also comprises three spherolites, its be installed in rotationally described in described three spherical pores on the body, body is plugged in the described axis hole of described outer body in described, one side of described spherolite is against on the hole wall of outer body, and opposite side is against in the groove that on the described core body three spheres with described spherolite are complementary; Outside described, be provided with axial clamping structure on the body, make described in body outside can spherolite in the axial bore of body sphere and the axial point of contact of hole wall be that the center is rotated but fixed the axial bore that places outer body in the axial bore of body outside.

The operating principle of the universal shaft coupling that the utility model provides is, one of them half-coupling is connected with the driving driving link, another half-coupling is connected with driven member, the half-coupling that is connected with driving link rotates, make the core body on it rotate, promote three spherolites, thereby the interior body that can promote to be connected with driven member rotates by core body, then the half-coupling that promotes to be connected with interior body rotates, and realizes the transmission of power and motion.Owing to be provided with three spherolites between two half-couplinves, inwall with the groove wall of core body of half-coupling of outer body and axial bore be installed in half-coupling with interior body on the sphere of spherolite in the sphere hole contact, can realize the universal rotation between two each half-couplinves.The universal shaft coupling that the utility model provides positions by three spherolites that are provided with between the end plugging of two half-couplinves, and passes through the sphere of ball grain, realizes universal function.The various Oldham's couplings of the structural principle of the universal shaft coupling that the utility model provides and prior art are essentially different, and therefore, it has the good effect that noise is low, vibration is little.Common Oldham's coupling can only be 960 rev/mins of down work, and the universal shaft coupling that the utility model provides can be under 3000 rev/mins high rotating speed smooth transfer power.

Description of drawings

The three-dimensional decomposition texture schematic representation of the universal shaft coupling that Fig. 1 provides for the utility model;

The sectional structure schematic representation of the outer body of the demonstration of the universal shaft coupling that Fig. 2 provides for the utility model, interior body and spherolite combination;

Fig. 3 is applied in the structural representation on the transmission shaft of mowing machine for the universal shaft coupling that the utility model is provided;

The structural representation of body and three spherolites in the universal shaft coupling that Fig. 4 provides for the utility model.

Embodiment

As Fig. 1,2, shown in 4, the universal shaft coupling that the utility model provides comprises two half-

couplings

1,2, these two half-couplings 1, two terminations that combine of 2 respectively are provided with the axial bore 11 of a concentric, 21, wherein the end with axial bore 11 on the half-coupling 1 constitutes an outer body 12, coaxial heart sets firmly a core body 13 in its axial bore 11, the end that half-coupling 2 has axial bore 21 constitutes interior body 22, the external diameter of interior body 22 is less than the internal diameter of the axial bore 11 of outer body 12, in this on circumferential side wall of body 22, at uniform three spherical pores 23 of circumferencial direction, the centre of sphere of these three spherical pores 23 is on same cross section; This universal shaft coupling also comprises three spherolites 3, in three spherical pores 23 in it is installed in rotationally on the body 22, interior body 22 is plugged in the axial bore 11 of outer body 12, one side of spherolite 3 is against on the hole wall of outer body 12, and opposite side is against in the groove 131 that on the core body 13 three spheres with spherolite are complementary.In order to guarantee that spherolite can be firm in the spherical pore of interior body, can establish two outwards gradually little conical shell sections 221,222 compositions so that endosome portion sets firmly tube Duan Weiyi cylindrical section section 220 and its both sides of spherolite, spherical pore extends on the conical shell section part.In order to increase the mating face of sphere and outer body, make lifting surface area bigger., correspondence respectively is provided with an arc groove 121 against three spherolite places on the inwall of the axial bore of body outside.

Body 12 is provided with axial clamping structure outside, the sphere that body 22 outside can spherolite in the axial bore 11 of body 12 in making and the axial point of contact of hole wall are that the center is rotated but fixed in the axial bore 11 of body outside, and ground places the axial bore 11 of outer body 12.Interior body has certain moving axially in the body outside.Concrete clamping structure can be, offer a circular groove 111 on the inwall at place, the aperture of the axial bore 11 of body 12 outside, in this circular groove 111, set firmly a snap ring 112, one section of these snap ring 112 outstanding axial bore inwall, the internal diameter of snap ring 112 is less than the outside of three spherolites that set firmly in the spherical pore on the interior body 22 distance to the axle center, thus, can realize interior body is fixed purpose in the axial bore of body outside.

Be illustrated in figure 3 as the transmission shaft 4 of mowing machine, set firmly universal shaft coupling A, the B that a utility model provides respectively at the two ends of transmission shaft, wherein the half-coupling A1 of the end of shaft coupling A connects the output shaft 5 of Power Drive Unit, and the half-coupling B1 of the end of shaft coupling B connects the rotating shaft 6 of the workpiece of mowing machine.The cushioning effect of this shaft coupling even being installed, the mowing machine walking of this universal shaft coupling is being on the rough road surface under the more serious state that jolts, owing to still can normally be worked.

Claims

1. universal shaft coupling, comprise two half-couplings, it is characterized in that: two terminations that combine of these two half-couplings respectively are provided with the axial bore of a concentric, the end that has axial bore on one of them half-coupling constitutes outer body, coaxial heart sets firmly a core body in its axial bore, the end that another half-coupling has axial bore constitutes interior body, the external diameter of body is less than the internal diameter of the axial bore of described outer body in described, in this on circumferential side wall of body, at uniform three spherical pores of circumferencial direction, the centre of sphere of these three spherical pores is on same cross section; Also comprise three spherolites, its be installed in rotationally described in described three spherical pores on the body, body is plugged in the described axis hole of described outer body in described, one side of described spherolite is against on the hole wall of outer body, and opposite side is against in the groove that on the described core body three spheres with described spherolite are complementary; Outside described, be provided with axial clamping structure on the body, make described in body outside can spherolite in the axial bore of body sphere and the axial point of contact of hole wall be that the center is rotated but fixed the axial bore that places outer body in the axial bore of body outside.

2. universal shaft coupling according to claim 1 is characterized in that: body sets firmly the tube Duan Weiyi cylindrical section section of spherolite and its two ends and extends two outwards gradually little conical shell sections and form in described, and spherical pore extends on the conical shell section part.

3. universal shaft coupling according to claim 1 is characterized in that: correspondence respectively is provided with an arc groove against three spherolite places on the inwall of the axial bore of body outside described.

4. universal shaft coupling according to claim 1, it is characterized in that: the axial clamping structure that is provided with on the body outside described is, outside described, offer a circular groove on the inwall at place, the aperture of the axial bore of body, in this circular groove, set firmly a snap ring, one section of the outstanding axial bore inwall of this snap ring, the internal diameter of snap ring is less than the outside of three spherolites that set firmly in the spherical pore on the interior body distance to the axle center.