CN1624351A - Rolling coupler - Google Patents

Abstract

This invention discloses a rolling combining axis. It is made up of two half couplings. There are 2 to 8 protruding desk for transferring torque. There are the rolling tracks in the different directions which are fixed on the desks or directly machined on the desks. There are 4-16 rolling substances in the central place through the spring reductor. The axis line of the scroll is vertical to the one of the half coupling. When they are working relatively, the scroll is moving in the track. It can remove the negative effect ion which improve the capacity a lot. The advantages are simple and easily produced, low cost long service life.

Description

Rolling coupler

Technical field

The present invention relates to the connected element between a kind of axle and the axle, promptly be used for the coupling of transmitting torque, particularly relate to a kind of two half-couplings can be done relative movement and can replace gear coupling under very little responsive to axial force rolling coupler.

Background technique

Existing gear coupling is under off working state, be that coupling does not bear under the state of moment of torsion, two half-couplings can be done relative movement, when gear coupling is subjected to torsional interaction, only under very big responsive to axial force, two half-couplings could be done relative movement, though can partly eliminate the adverse effect of main shaft elongation to equipment, but owing between equipment axis, also have very big axial force, very unfavorable to the proper functioning of equipment; And because gear coupling is by gear teeth transmitting torque, the gear teeth are in contact with one another, and very big positive pressure is arranged and the fine motion phenomenon takes place, and can not form oil film between the tooth bearing, produce the dry friction phenomenon, gear teeth rapid wearing and destroying; When being used for the frequent situation of clockwise and anticlockwise, the easy fatigue ruption of gear.Therefore, gear coupling can not satisfy the requirement of freely extending when being connected axle work.No. 200420036073.9 Chinese patents " axially movable coupling " of my application, by about the half-coupling of two different structures form, two half-couplings of this coupling can only rotate towards a direction, just can not be effective when backward rotation.

Summary of the invention

The objective of the invention is to overcome above shortcoming, provide a kind of under very little responsive to axial force, two half-couplings can be done relative movement, thereby eliminate the rolling coupler of harmful axial force, and can be suitable for positive and negative frequent being in transmission connection.

Two half-couplings that connect transmission shaft about the present invention includes, rolling element, raceway, by spring seat, movable bullet seat, the spring reset device that spring is formed, two half-coupling structures are basic identical about it is characterized in that, be provided with the boss of 2-8 transmitting torque on each half-coupling flange plate, two transmission direction on boss are provided with raceway, 4-16 the rolling element that is distributed on the two half-coupling circumference places the raceway middle position by the spring reset device, the axis of rolling element and the axis normal of half-coupling, when about two half-couplings when doing relative motion, rolling element rolls on raceway.About two half-couplings by exerting pressure transmitting torque to rolling element, coupling can be turned clockwise, also can the inhour rotate.

Raceway can be screwed in about on two half-couplings, also can directly process on two half-coupling boss.The coupling outside konisphere of can setting up defences.Rolling element and raceway adopt high strength and the good tool steel of wear-resisting property to process, and make rolling element and raceway bearing load ability strong, and wear-resisting property is good.

Rolling coupler has following characteristics: owing to be rolling friction between rolling element and the raceway, when under very little responsive to axial force, rolling element moves on raceway, about two half-couplings can do relative movement.When adopting rolling coupler to be used for connection between the equipment axis, allow to be connected the deflection that axle freely extends or have several angle, can ten minutes eliminate the illeffects of axial force effectively, equipment performance has obtained very big improvement.It is simple in structure, and is easy to manufacture, low with respect to the gear coupling cost.Rolling element and raceway adopt high strength and the good tool steel of wear-resisting property to process, and make rolling element and raceway bearing load ability strong, and wear-resisting property is good, and long service life can be changed easily, assembling and easy to maintenance.So its performance surpasses gear coupling, be the ideal product that replaces gear coupling.

Axial force relatively saw the following form when two kinds of coupling work footpaths were mobile:

Gear coupling			Axially movable coupling			The ratio Fz/Fc (%) of axial force
							Model	The coefficient of sliding friction	Axial force F c (N)	Coefficient of rolling friction (cm)	Rolling element diameter (mm)	Axial force F z (N)
????CL1	????0.1	????3020	????0.001	????18	????75.7								????2.5
						????CL5	????0.1	????15240	????0.001	????36	????264.5	????1.8
????CL8	????0.1	????30460	????0.001	????56	????340.0								????1.1
						????CL12	????0.1	????74080	????0.001	????80	????578.7	????0.8
????CL18	????0.1	????277780	????0.001	????120	????1446.7								????0.5

Description of drawings

Fig. 1 is the rolling coupler schematic representation;

Fig. 2 is the cut-away view of Fig. 1;

Fig. 3 is the half-coupling schematic representation;

Fig. 4 is the cut-away view of Fig. 3.

Embodiment

Embodiment 1: in conjunction with the accompanying drawings:

About two half-coupling 1 structures basic identical, present embodiment becomes diagonal to be arranged with the boss 3 of 2 transmitting torques on each half-coupling flange plate 2, two transmission direction at boss are fixed in raceway 11 on two half-couplings with screw 4, and 4 cylindrical body rolling elements are distributed on the two half-coupling circumference.The spring reset device of being made up of spring seat 5, movable bullet seat 6, spring 7 places the raceway middle position with rolling element.When about two half-couplings when doing relative motion, rolling element rolls on raceway, the coupling outside konisphere 8 of setting up defences.Because be rolling friction between rolling element and the raceway, when under very little responsive to axial force, rolling element moves in raceway, about two half-couplings can do relative movement.When adopting rolling coupler to be used for connection between the equipment axis, allow to be connected axle and freely extend or make axial small distance and move, axial force is very little, can not produce adverse effect to equipment.

Embodiment 2

Present embodiment is as different from Example 1: become diagonal to be arranged with the boss of 8 transmitting torques on each half-coupling flange plate, 16 cylindrical body rolling elements are distributed on the two half-coupling circumference.

Embodiment 3

Present embodiment is as different from Example 1: become diagonal to be arranged with the boss of 4 transmitting torques on each half-coupling flange plate, 8 cylindrical body rolling elements are distributed on the two half-coupling circumference.

Claims (7)

1, a kind of rolling coupler, two half-couplings that connect transmission shaft about comprising, rolling element, raceway, by spring seat, movable bullet seat, the spring reset device that spring is formed, two half-coupling structures are basic identical about it is characterized in that, on each half-coupling flange plate, be provided with the boss of 2-8 transmitting torque, on two transmission direction of boss, be provided with raceway, 4-16 the rolling element that is distributed on the two half-coupling circumference places the raceway middle position by the spring reset device, the axis of rolling element and the axis normal of half-coupling, when about two half-couplings when doing relative motion, rolling element rolls on raceway.

2, rolling coupler according to claim 1 is characterized in that coupling can turn clockwise, and also can inhour rotate.

3, rolling coupler according to claim 1 is characterized in that rolling element can be spheroid or cylindrical body.

4, rolling coupler according to claim 1, it is characterized in that raceway be screwed in about on two half-couplings.

5, rolling coupler according to claim 1 is characterized in that raceway is that directly processing is on two half-coupling boss.

6, rolling coupler according to claim 1 is characterized in that the coupling outside is provided with dust ring.

7, rolling coupler according to claim 1 is characterized in that rolling element and raceway adopt tool steel to make.

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