CN2791117Y

CN2791117Y - Elastic vibration-absorbing running system for soil shifter

Info

Publication number: CN2791117Y
Application number: CN 200520040518
Authority: CN
Inventors: 马卫东; 吕佩; 陈建光; 沈浩; 郭歆健; 屠海龙
Original assignee: Shanghai PengPu Machine Building Plant Co Ltd
Current assignee: Shanghai PengPu Machine Building Plant Co Ltd
Priority date: 2005-03-30
Filing date: 2005-03-30
Publication date: 2006-06-28
Anticipated expiration: 2015-03-30

Abstract

The utility model discloses an elastic vibration-absorbing running system for a soil shifter, which belongs to the technical field of an elastic vibration-absorbing device for a soil shifter. The utility model is characterized in that a shifter frame is provided with an installing plane surface provided with a positioning rabbet at the part of adjacent to the front side of a hole site for the installation of a final drive half shaft; a pivot shaft is installed on the plane surface through the positioning rabbet by bolts; the back part of a trolley is hung on the pivot shaft and can be rotated around the pivot shaft; the front part is provided with a compensating beam which is directly hung on the trolley, and the compensating beam is connected with the trolley via a pin shaft; meanwhile, the part used for the installation of a thrust wheel is provided with two swinging frames, one end of the big swinging frame is connected with the trolley via a lubricating pin shaft and can be swung around the trolley, and the upper surface of the other end and the corresponding surface of the trolley are respectively provided with a rubber vibration-absorbing device; the small swinging frame is connected with the big swinging frame via a lubricating pin shaft and can be swung around the big swinging frame, both ends of the small swinging frame are respectively provided with a thrust wheel; thus, impact energy can be absorbed through the corresponding swinging movement of the swinging frames, which enable the performance of the complete machine to be improved and the working condition of a driver to be improved.

Description

The elastic damping running gear of bulldozer

Technical field

The utility model relates to the elastic damping running gear of a kind of vibration absorber, particularly a kind of bulldozer.

Background technology

The running gear pattern of domestic 120 horsepowers at present, (containing 120 horsepowers) above power stage crawler dozers all is following form basically:

At first, the Running System rear end directly links to each other with the two ends of final jackshaft by chassis " eight " word beam, and bogie frame can be around final jackshaft revolution, and the front end equalizer bar directly hangs on the bogie frame.This kind suspension type bulldozer weighs because final jackshaft is bearing the machine of bulldozer, the longitudinal resistance of being born in the machine walking process simultaneously also acts on drive sprocket and the final jackshaft, so in the process of walking, if Uneven road or the cataclysm of soil-shifting load, the shock loading that machine is subjected to all can cause damage to final transmission, and by final transmission whole driving-chain is impacted, influence transmission system application life.

Secondly, the Running System thrust wheel adopts rigid connection, be that the direct rigidity of supporting wheel shaft and chassis links, chassis moves with surface wave is moving with thrust wheel, because the weight of machine is almost born by thrust wheel, and directly reach fuselage by thrust wheel from the reaction force on ground, particularly when bulldozer has been crossed obstruction, can one-sided a certain thrust wheel occur stressed be the several times of its average, even more than ten times situation, its walking mechanism easily produces violent vibration and impact, and this phenomenon is outstanding further with the increasing of bulldozer type.

The utility model content

At the shortcoming that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of direct impact of shock loading to final transmission of both having avoided, the vibration and the impact of walking mechanism itself have also been weakened simultaneously, in order to overcome crawler dozer running gear thrust wheel unbalance stress, walking mechanism easily produces the elastic damping running gear of the bulldozer of high vibration and impact.

In order to solve the problems of the technologies described above, the elastic damping running gear of a kind of bulldozer provided by the utility model, on vehicle frame, one mounting plane that has a positioning spigot is set near the position, front side that position, final jackshaft hole is installed, one pivot is installed on this plane with bolt by positioning spigot, and the rear suspension of chassis can be rotated on pivot and around pivot; The front portion is provided with an equalizer bar and directly hanging on the chassis, is connected by bearing pin between equalizer bar and the chassis, and the weight of car body to chassis, has avoided final drive shaft directly to be subjected to the shock loading on next ground by pivot and balance load bearing beam; At the position that thrust wheel is installed two rockers are set simultaneously, big rocker one end connects with chassis by lubricated bearing pin and can swing around chassis, corresponding with chassis of other end upper surface is respectively adorned a rubber shock absorber, little rocker links by lubricated bearing pin and big rocker and can be around big rocker swing, and a thrust wheel is respectively adorned at the two ends of little rocker.

The elastic damping running gear of the bulldozer that the utility model provides, mainly be by pivot and equalizer bar with the weight bearing of car body to chassis, avoid final drive shaft directly to be subjected to the shock loading on next ground, made whole driving-chain all obtain certain protection; In addition owing to be provided with large and small rocker at the position that thrust wheel is installed, like this, impact and fluctuation according to ground, the corresponding swing of rocker, and by rubber shock absorber absorption impact energy, and fuselage is unaffected, complete machine and its running gear life-span prolong, the complete machine performance improves, and driver's condition of work is improved.

Description of drawings

Fig. 1 is the front view of the utility model embodiment.

Fig. 2 is the vertical view of the utility model embodiment.

Fig. 3 is the pivot position coupling mechanism figure of the utility model embodiment.

Fig. 4 is equalizer bar and the chassis connection diagram of the utility model embodiment.

Fig. 5 is the structure chart of the rocker mechanism of the utility model embodiment.

Fig. 6 is the sectional view along A-A of the utility model Fig. 5 embodiment.

The specific embodiment

Below in conjunction with description of drawings enforcement of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.

Referring to Fig. 1, shown in Figure 2, the elastic damping running gear of a kind of bulldozer that present embodiment is described, its characteristics are that the chassis rear suspension is on pivot 1, around pivot swinging, the chassis middle part connects by spherical swinging axle with the equalizer bar 2 of car body, when chassis is swung, equalizer bar is swung with it, have two thrust wheels in the rocker mechanism 3, by the lubricated bearing pin swing on chassis and big rocker respectively of large and small rocker, a chassis has three groups of rockers.

Referring to shown in Figure 3, pivot 1 by seam and Bolt Connection to vehicle frame, it and chassis 6 are by metal lining 5,9 matched in clearance, chassis can be rotated around it, with gland 4 location, prevent that chassis side direction string is moving at last, the lower plane of chassis 6 is equipped with elastic suspension 7, the effect of oil sealing 8 is to prevent that on the one hand outside dust from entering the chassis inner chamber, prevents that on the other hand the oil of chassis inner chamber from oozing out.

Referring to shown in Figure 4, equalizer bar is swung around the vehicle frame upper pin, its two ends are connected on the chassis 6 by bulb swinging axle 14, the bulb position of bulb swinging axle 14 is put in the hemisphere lining 10, the other end is contained in ellipse hole lining 15 endoporus, leave the gap between endoporus and the swinging axle, the middle part connects equalizer bar by oscillating bearing 13, motion according to equalizer bar 2, bulb swinging axle 14 is swung around bulb one end, Buffer Unit 16 is equipped with on other end top, plays the buffer shock-absorbing effect, and oil sealing 11,12 plays dustproof leakproof effect.

Referring to Fig. 5, shown in Figure 6, big rocker 17 left ends are swung around chassis by the lubricated bearing pin identical with 20, the flexible shock absorber 19 of Plane Installation on the right-hand member, little rocker 21 is swung around big rocker 17 by lubricated bearing pin 20, a thrust wheel 18 is respectively adorned at its two ends, and according to the ground situation, big or small rocker is swung thereupon, elastic suspension 19 contacts with elastic suspension 7 among Fig. 3, crimp, absorbs the impact energy from ground.In sum, the concrete enforcement of elastic damping running gear is as follows:

When surface wave is moving when not being very big, only thrust wheel two-stage rocker is around its axle swing separately, plays the vibration reduction and cushioning effect by the elastic deformation of elastic suspension;

When running gear ran into big obstruction, in thrust wheel two-stage rocker swing, whole chassis swung up and down around pivot, drove the equalizer bar swing simultaneously, and the amplitude of swing is subjected to the spacing of equalizer bar limited block on the vehicle frame.

Claims

1, a kind of elastic damping running gear of bulldozer, it is characterized in that, on vehicle frame, one mounting plane that has a positioning spigot is set near the position, front side that position, final jackshaft hole is installed, one pivot is installed on this plane with bolt by positioning spigot, and the rear suspension of chassis can be rotated on pivot and around pivot; The front portion is provided with an equalizer bar and directly hanging on the chassis, is connected by bearing pin between equalizer bar and the chassis; At the position that thrust wheel is installed two rockers are set simultaneously, big rocker one end connects with chassis by lubricated bearing pin and can swing around chassis, corresponding with chassis of other end upper surface is respectively adorned a rubber shock absorber, little rocker links by lubricated bearing pin and big rocker and can be around big rocker swing, and a thrust wheel is respectively adorned at the two ends of little rocker.

2, the elastic damping running gear of bulldozer according to claim 1 is characterized in that, described equalizer bar is around the swing of vehicle frame upper pin, and its two ends are connected on the chassis by the bulb swinging axle.