CN2256041Y

CN2256041Y - Supporting balancer for ball hinged supporting swinging oblique disc

Info

Publication number: CN2256041Y
Application number: CN 96211042
Authority: CN
Inventors: 陈连义
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-07
Filing date: 1996-05-07
Publication date: 1997-06-11
Anticipated expiration: 2006-05-07

Abstract

The utility model relates to a supporting and balancing device of a spherical hinging, supporting, and swinging oblique disc. The device is composed of a shell body, a main shaft, a piston, a cylinder body, a push and pull disc which is driven by two two-way cylinders to move along the longitudinal direction of the main shaft, a catch plate which is driven by the main shaft to rotate and can be driven by the push and pull disc to move on a longitudinal direction, a swinging disc which is driven by the catch plate to rotate and rotates a certain angle along the center of a spherical hinge, an oblique disc which is supported by the spherical hinge and is driven by the swinging disc to do reciprocating swinging, etc. The supporting and balancing device is additionally arranged between the swinging disc (10) and the main shaft (2). The utility model has the advantages of simple structure, small size, light weight, and low cost. The service life of the oblique disc is prolonged, and the service effect of the complete machine is enhanced.

Description

Ball pivot supports the balance support device that waves swash plate

The utility model relates to the swash plate transmission conversion equipment that adopts in the hydraulic axial plunger pump, and particularly a kind of ball pivot supports the balance support device that waves swash plate.

Disclose a kind of ball pivot in 91201418.0 utility application by patentee Chen Lian justice design invention and supported and wave the swash plate transmission device, its structure characteristic is: have housing, main shaft, piston, cylinder body and driven along the axially movable push-and-pull dish of main shaft by two two-way cylinders; Also can be by the main shaft driven rotary by the moving axially movable dial of push-and-pull dribbling; By the dial driven rotary and the shaking tray that can turn an angle around the ball pivot center; Supported and driven by shaking tray the swash plate etc. of reciprocally swinging is made up of ball pivot.

As shown in fig. 1, push-and-pull dish 4 is fixedlyed connected with the piston rod of two two-way cylinders, is laid with four guiding grooves 5 on the push-and-pull dish circumference, matches with guide pad 6 on being fixed on housing, makes it move axially and can not rotate along main shaft; 7 is dial, is fixed with on the dial to dial arm 8 and be provided with groove 9, and dial is connected by spline with main shaft; 10 is shaking tray, and its end face is provided with a dog 11 and a dovetail groove 12; 13 is slide block, and it is embedded in the dovetail groove of shaking tray, and hinged with group arm; 14 is swash plate, support by ball pivot 15, being uniformly distributed along the circumference on the swash plate end face connects odd number piston 16, and its outer round surface upper edge diametric(al) is provided with two minor axises, on the axle roller 17 is housed, 18 for being fixed on the block arc on the housing, its radius is slightly larger than the swash plate radius, so that can block roller, it is rolled in the above, disturb in the time of avoiding the swash plate swing again, 19 is the piston oil-cylinder cylinder body.

Ball pivot supports the working principle wave the swash plate transmission system: when swash plate 14 end faces vertical with main-shaft axis, when being the coincidence of swash plate center line main-shaft axis, the rotation of main shaft drives dial 7 by spline and rotates, dial drives shaking tray 10 again and rotates, because this moment, the tilt angle of swash plate was zero, shaking tray is around the rotation of swash plate center line, and the swash plate transfixion, each piston 16 is also just motionless, and the flow of each cylinder body 19 is zero.When the piston of two two-way cylinders 3 of control moves right, push-and-pull dish 4 drives dial and axially moves right along main shaft, by dialling the effect of arm 8 and slide block 13, make swash plate and shaking tray around angle of ball pivot 15 centroclinal rotations, form certain angle between the center line of shaking tray and swash plate and the main-shaft axis, simultaneously dog 11 on the shaking tray and 9 engagements of the groove on the dial.This moment main shaft rotation to make shaking tray make the shape luck that is combined into around the rotation of swash plate center line with around the revolution of main-shaft axis moving, do spatial motion thereby drive swash plate.In illustrated space right-angle system of coordinates OXY2, because the restriction of ball pivot and two circular arc blocks 18, swash plate can not be around 2 rotation angles, can only be fulcrum with the ball pivot center, do reciprocal space compound swing around X-axis and Y-axis, thereby each piston that connects on its end face is done reciprocating linear motion under the fixed state of each cylinder body.The motion commutation of each piston is carried out in a circumference successively in turn.When swashplate angle increased, its oscillating quantity increased, and makes the corresponding increase of stroke of each piston, and flow also just increases.If the distance that swashplate angle can move with the push-and-pull dish is 0 ° of arbitrary variation in certain certain value, thus also regulated at will within the specific limits just of flow, thus realize permanent power stepless Variable Control.Because shaking tray and swash plate only rely on the location of ball seat and two circular arc blocks in movement process, when system during in load running, swash plate and ball pivot can't keep circumferential equalization in 2 axial matching gaps, and along with the inclination angle of swash plate increases, the matching gap of the two more is difficult to guarantee, thereby cause rupture of oil film, it is lubricated to realize ideal, and increases friction and sharply heating, also can produce shock and vibration simultaneously, shorten component working life, the stable operation of influence machinery.

The purpose of this utility model provides a kind of ball pivot and supports the balance support device that waves swash plate, to guarantee having normal matching gap between swash plate and ball pivot when the transmission system load running, the sharply heating of avoiding rubbing, increase the service life, improve safety reliability.

Adopt following technological scheme for achieving the above object;

It is to have set up a balance support device between former shaking tray 10 and main shaft 2 that described ball pivot supports the balance support device that waves swash plate.

Described ball pivot supports the balance support device that waves swash plate to be made up of support 20, balance bearing 21 and supporting base pad 22 etc., and support 20 usefulness bolton are in shaking tray end face central position; Balance bearing 21 places main shaft right-hand member groove, and being that cambered surface is smooth with support 20 Connecting format contacts, cambered surface radius for the ball seat center to the support top, the line of centres of dog and dovetail groove overlaps on cambered surface direction and the shaking tray end face; Supporting base pad 22 thickness are according to swash plate and ball seat matching gap and decide.

The utility model ball pivot supports the balance support device that waves swash plate and has following superiority:

This apparatus structure is simple, do not change the overall structure of transmission device, make when transmission system during in load running swash plate and ball pivot can obtain uniform matching gap at 2 axle direction, be unlikely to increase because of frictional force, cause parts sharply to generate heat, thereby influence working life, and improved the using effect of complete machine, and volume is little, in light weight, cost is low.

Below in conjunction with the description of drawings specific embodiment:

Accompanying drawing 1 is the utility model structural representation.

As shown in FIG.: 20 is support, and it uses bolton in the shaking tray end face; 21 is the balance seat, places main shaft right-hand member groove, and being that cambered surface is smooth with the support Connecting format contacts, cambered surface radius for the ball seat center to the support top, the line of centres of dog and dovetail groove overlaps on cambered surface direction and the dial end face; 22 is the supporting base pad, and its thickness is according to swash plate and ball seat matching gap and decide.

The working principle of this device is: when swashplate angle when in certain value, changing arbitrarily for 0 °, support 20 is with the corresponding inclination several angle of shaking tray, and remain with balance seat 21 that cambered surface is smooth to be contacted, when main shaft rotates, support 20 also rotates around main-shaft axis with same rotating speed, same direction with balance seat 21, and the two does not have relative movement in the OXY plane.During system works, by changing supporting base pad 22 thickness, make swash plate and ball seat obtain certain matching gap, can guarantee that oil film forms, obtain good lubrication, reduce friction and generate heat, also make simultaneously shaking tray form rigidity and contact by support, balance seat with main shaft, when pistons work, piston rod passes to main shaft and pump case at 2 axial reaction forces by support, balance seat and pad to swash plate, to eliminate the shock and vibration that produced in shaking tray and the swash plate running.

Claims

1, a kind of ball pivot supports the balance support device that waves swash plate, it drives along the axially movable push-and-pull dish of main shaft by housing, main shaft, piston, cylinder body and by two two-way cylinders, also can be by the main shaft driven rotary by the moving axially movable dial of push-and-pull dribbling, by the dial driven rotary and the shaking tray that can turn an angle around the ball pivot center, support and drive the swash plate of doing reciprocally swinging etc. by ball pivot and form of the present utility model being characterised in that by shaking tray; It is to have set up a balance support device between former shaking tray (10) and main shaft (2) that described ball pivot supports the balance support device that waves swash plate; Described balance support device is made up of support (20), balance bearing (21) and supporting base pad (22) etc., support (20) uses bolton in shaking tray end face central position, balance bearing (21) places main shaft right-hand member groove, being that cambered surface is smooth with support (20) Connecting format contacts, cambered surface radius for the ball seat center to the support top, the line of centres of dog and dovetail groove overlaps on cambered surface direction and the shaking tray end face; Supporting base pad (22) thickness is according to swash plate and ball seat matching gap and decide.