CN208816531U

CN208816531U - A kind of nutation drive bearing

Info

Publication number: CN208816531U
Application number: CN201821406120.1U
Authority: CN
Inventors: 崔进福; 朱平平; 李洛
Original assignee: Chengdu Xinzhihang Electromechanical Technology Research Co Ltd
Current assignee: Chengdu Xinzhihang Electromechanical Technology Research Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2019-05-03
Anticipated expiration: 2028-08-31

Abstract

The utility model discloses a kind of nutation drive bearings, including inner ring, spacer pin, outer ring, retaining ring, it is characterised in that: the inner ring is flexural pivot mating connection with outer ring, is uniformly distributed several limiting slots on the outer diameter of the inner ring, there is keyway one on the internal diameter of inner ring；There is keyway two on the outer diameter of the outer ring, several through-holes, quantity one-to-one correspondence and the position coincidence of the through-hole and limiting slot are uniformly distributed on the internal diameter of outer ring；Spacer pin is placed in the through-hole of outer ring and cooperates with the limiting slot of inner ring；Retaining ring is fixedly connected on inner ring two sides.The utility model structure is simple, can guarantee that outer ring relative to inner ring beat certain angle range, inputs suitable for power and exports the occasion for having certain angle.

Description

A kind of nutation drive bearing

Technical field

The utility model designs mechanical organ technical field, especially a kind of nutation drive bearing.

Background technique

In the equipment such as hoist engine, one fixed pulley often is set in its reel leading portion and is commutated, the fixed pulley one As can only be rotated about axis, the wirerope of hoist engine spiral winding on a bobbin makes the axis normal direction of wirerope and fixed pulley It forms an angle, and then makes the wheel rim of fixed pulley by biggish frictional force, be easy to cause wirerope to be detached under limiting case and slide Wheel, causes mechanical accident.Therefore designing one kind can make inner ring and outer ring that can carry out the drive bearing right and wrong of certain angle beat Often it is necessary to.

Summary of the invention

The technical problem to be solved by the present invention is to provide a kind of nutation drive bearings, to solve the above technical problems, And be achieved through the following technical solutions.

In order to solve the above technical problems, the utility model provides a kind of nutation drive bearing, including it is inner ring, spacer pin, outer Circle, retaining ring, it is characterised in that: the inner ring is flexural pivot mating connection with outer ring；Spacer pin be placed in the through-hole of outer ring and with it is interior The limiting slot of circle cooperates；Retaining ring is fixedly connected on inner ring two sides by screw；One end of spacer pin and the through-hole of outer ring are gap Cooperation, it is easy to disassemble；The limiting slot of the spacer pin other end and inner ring is clearance fit, keeps spacer pin free in limiting slot Sliding.

The nutation drive bearing, it is characterised in that: several limiting slots are uniformly distributed on the outer diameter of the inner ring, it is described Limiting slot is the identical arc groove of depth；There is keyway one on the internal diameter of the inner ring；Inner ring and outer ring are flexural pivot mating connection, interior The outer surface of circle is spherical arcwall face, and limiting slot is processed as deep equality, and cross sectional shape is also arc；Key on inner ring internal diameter Slot one can be connected by key with power output shaft.

The nutation drive bearing, it is characterised in that: have keyway two on the outer diameter of the outer ring, on the internal diameter of outer ring The quantity of even several through-holes of distribution, the through-hole and limiting slot corresponds and position is overlapped；Keyway two on the outer diameter of outer ring can It is connected by key with driven member.

The above scheme of the utility model has the beneficial effect that:

A kind of outer ring of nutation drive bearing of the utility model can be inclined along limiting slot around inner ring under the action of spacer pin Rotation is dynamic, and the retaining ring by being fixed on inner ring two sides is limited, and prevents spacer pin to be detached from limiting slot, makes outer ring relative to inner ring Controllable does beat movement in a certain range；Meanwhile one end of spacer pin is in limiting slot, can limit inner ring and outer ring Axial relative movement, i.e. spacer pin can transmit the axial torque by inner ring to outer ring.The utility model structure is simple, Neng Goubao Outer ring is demonstrate,proved relative to inner ring beat certain angle range, is inputted suitable for power and exports the occasion for having certain angle.

Detailed description of the invention

Fig. 1 is a kind of cross-sectional view of nutation drive bearing of the utility model；

Fig. 2 is a kind of inner ring structure schematic diagram of nutation drive bearing of the utility model；

Fig. 3 is a kind of outer ring structure schematic diagram of nutation drive bearing of the utility model；

Fig. 4 is a kind of outer ring of nutation drive bearing of the utility model with respect to inner ring left avertence schematic diagram；

Fig. 5 is a kind of outer ring of nutation drive bearing of the utility model with respect to inner ring right avertence schematic diagram.

In figure, 1, inner ring；1-1, keyway one；1-2, limiting slot；2, outer ring；2-1, through-hole；2-2, keyway two；3, it limits Pin；4, retaining ring；θ is the beat angle of inner ring longitudinal axis and outer ring longitudinal axis.

Specific embodiment

The utility model is further detailed below with reference to embodiment；The following examples are not for this hair Bright restriction, it is any in technological frame disclosed in the utility model only as the mode for supporting realization the utility model Equivalent structure replacement, is the protection scope of the utility model.

A kind of nutation drive bearing as shown in attached drawing 1~3, including inner ring (1), outer ring (2), spacer pin (3), retaining ring (4), it is characterised in that: the inner ring (1) is flexural pivot mating connection with outer ring (2)；Spacer pin (3) is placed in the through-hole of outer ring (2) Cooperate in (2-1) and with the limiting slot (1-2) of inner ring (1)；Retaining ring (4) is fixedly connected on inner ring (1) two sides by screw；Limit The through-hole (2-1) of one end and outer ring (2) for selling (3) is clearance fit, easy to disassemble；Spacer pin (3) other end and inner ring (1) Limiting slot (1-2) is clearance fit, keeps spacer pin (3) free to slide in limiting slot (1-2)；Limiting slot in use process Butter is added in (1-2), to reduce the frictional force between spacer pin (3) and limiting slot (1-2).

A kind of nutation drive bearing as shown in Figure 2 is uniformly distributed several limiting slot (1- on the outer diameter of the inner ring (1) 2), limiting slot (1-2) generally 180 ° of two limiting slots being arranged symmetrically, particular number can according to transmitting torque and The quantity of spacer pin (3) determines；The limiting slot (1-2) is the identical arc groove of depth；There is key on the internal diameter of the inner ring (1) Slot one (1-1)；Inner ring (1) and outer ring (2) are flexural pivot mating connection, and the outer surface of inner ring (1) is spherical arcwall face, limiting slot (1-2) is processed as deep equality, and cross sectional shape is also arc；Keyway one (1-1) on inner ring (1) internal diameter can be with power output Axis is connected by key.

A kind of nutation drive bearing as shown in Figure 3 has keyway two (2-2) on the outer diameter of the outer ring (2), outer ring (2) Internal diameter on be uniformly distributed several through-holes (2-1), the quantity of the through-hole (2-1) and limiting slot (1-2) corresponds and position It is overlapped；Keyway two (2-2) on outer ring (2) outer diameter can be connected by key with driven member.

It a kind of outer ring (2) of nutation drive bearing of the utility model can be around inner ring (1) edge under the action of spacer pin (3) The rotation of limiting slot (1-2) beat, and the retaining ring (4) by being fixed on inner ring (1) two sides is limited, and spacer pin (3) is prevented to be detached from Limiting slot (1-2), make outer ring (2) relative to inner ring (1) it is controllable do beat movement in a certain range；If Fig. 4 is that this is practical The outer ring (2) of novel nutation drive bearing a kind of is with respect to inner ring (1) left avertence schematic diagram, inner ring (1) longitudinal axis and outer ring (2) The beat angle of longitudinal axis is θ, and θ angle is generally defined within the scope of 0 °~11 °；One kind if Fig. 5 is the utility model is inclined The outer ring (2) of swing dynamic bearing is with respect to inner ring (1) right avertence schematic diagram, and the structure that deflects is symmetrical structure, therefore its right avertence angle It spends consistent with left avertence angular range.

Meanwhile one end of spacer pin (3) can limit the axial phase of inner ring (1) with outer ring (2) in limiting slot (1-2) To movement, i.e. spacer pin (3) can transmit the axial torque by inner ring (1) to outer ring (2).The utility model structure is simple, energy Enough guarantee that outer ring (2) relative to inner ring (1) beat certain angle range, have with output in angle theta range suitable for power input Interior occasion.

Claims

1. a kind of nutation drive bearing, including inner ring, spacer pin, outer ring, retaining ring, it is characterised in that: the inner ring is with outer ring Flexural pivot is cooperatively connected；Spacer pin is placed in the through-hole of outer ring and cooperates with the limiting slot of inner ring；Retaining ring is fixedly connected by screw In inner ring two sides.

2. a kind of nutation drive bearing according to claim 1, it is characterised in that: be uniformly distributed on the outer diameter of the inner ring Several limiting slots, the limiting slot are the identical arc groove of depth；There is keyway one on the internal diameter of the inner ring.

3. a kind of nutation drive bearing according to claim 1, it is characterised in that: have keyway on the outer diameter of the outer ring Two, it is uniformly distributed several through-holes on the internal diameter of outer ring, the quantity of the through-hole and limiting slot corresponds and position is overlapped.