RU2144879C1 - Suspension of crawler vehicle track carrier rollers - Google Patents

Abstract

FIELD: crawler tractors with low-rate suspension. SUBSTANCE: device has frame consisting of hollow sidemembers provided with ports and brackets welded to side-members at both sides from ports. Spring are arranged in pairs inside sidemembers. Front support of spring is bolted through beads on side-member. Rear support, in its central part, is provided with cylindrical socket and pin located in hole on end of intermediate link whose second end has cylindrical socket for hinge joint. Track carrier roller is hinge-mounted on axle between equalizers. Opposite end of equalizer is provided with axle rotating in bracket bushings. Carrier is secured on axle in its central part. Carrier is provided with hinge joint forming member for engagement with cylindrical socket of intermediate link. EFFECT: enhanced protection f suspension from sun rays, moisture and abrasives. 4 dwg

Description

 The invention relates to tracked agricultural tractors with soft suspension.

 Known suspension of the track rollers of the tracked vehicle [1], containing a carriage of two balancers pivotally connected by a pin and interacting with each other through a spring. The carriage is located on the trunnion cantilever relative to the hollow frame side member. The carriage receives about a quarter of the unsprung mass of the tractor. When transporting an agricultural machine mounted on a tractor, the load on the axle increases.

 The disadvantage of this device is that during operation, the spring of the carriage is not protected from harmful external influences: sun, moisture, abrasive. In addition, the tractor's hinged ability is limited by the position of the trunnion, and not the extreme track roller.

 Known suspension of track rollers of the tracked vehicle [2], containing elastic elements in the form of torsion bars. The machine frame contains spars with cylindrical windows spanning the said torsions, which are placed in pipes connecting the left and right frame spars.

 The position of the side members in height relative to the soil surface determines the ground clearance of the machine - one of the main parameters of agricultural machines. The required parameter is often provided by the corresponding diameter of the track roller, which inevitably entails an increase in the dimensions of the machine.

 Known suspension of the track rollers of the tracked vehicle [3], containing an elastic element in the form of a spring with supports along its ends and located along the frame. One of the spring supports is connected with the frame, and the other through the intermediate link - with a two-shoulder balancer, pivotally connected to the frame. One end of the balancer is pivotally connected to the support roller, and the other, also pivotally, to the intermediate link.

 The disadvantage of this device is that during operation, the spring of the carriage is not protected from the above external influences.

 The essence of the invention lies in the fact that in the suspension of the track rollers of the tracked vehicle, containing an elastic element in the form of a spring located along the frame with supports at its ends, one of the supports being connected to the frame and the other through an intermediate link with a two-arm balancer, the two-arm balancer is connected with frame, while one end of the balancer is pivotally connected to the support roller, and the other also pivotally to the intermediate link, in order to protect against harmful external influences such as sun, moisture, abrasive, the frame is made of hollow spars, the spar is about open from one of the ends, made with windows according to the number of balancers and contains brackets with bushes on the sides of the windows, springs are arranged in pairs inside the spar, the rear spring support in their central part is made with a cylindrical socket and contains a finger located in the hole at the end of the intermediate link in in the form of a rod, the second end of which contains a cylindrical socket of the hinge, while one shoulder of the balancer is fixedly connected with the axis of the suspension and is made with the element forming the hinge interacting with the named socket, and the other shoulder is in the form of levers, arranged symmetrically on either side of the spar and also fixedly connected with the suspension axis of rotation, with its arms in the sleeves, the opposite end of the balance bar is fixedly connected with the ends of the roller axis, and the roller located between said levers beams.

 The invention is illustrated by drawings, where in FIG. 1 shows a tractor with the proposed suspension; in FIG. 2 - element I in FIG. 1; in FIG. 3 is a section AA in FIG. 2; in FIG. 4 is a section BB in FIG. 2.

 The frame contains a rectangular hollow spar 1, one of the ends of which is closed by a plug 2. The lower shelf of the spar is made with windows 3, the number of which is equal to the number of track rollers 4. The track roller is located on axis 5 with the possibility of rotation. In the axial direction, the roller is fixed by balancers 6 located on both sides of the spar 1 and fixedly mounted on the ends of the axis of the roller 5 using yokes 7. The opposite end of the balancer 6 is similarly fixed to the ends of the axis of the suspension 8 using yokes 9. On the axis 8 in its middle leash 10 is fixed to the parts 10. Brackets are welded to the side walls of the side member in the window 3 region. The axis 8 is installed in the bushings of the supports 12, which in turn are mounted in the holes of the brackets 11 and bolted to them together with the covers 13. Inside Yoron in close proximity to the windows 3 are a pair of springs 14 with the supports 15 and 16 at their ends. The support 15 on the sides has collars 17 with threaded holes for bolts that fasten it to the spar 1. The support 16 in its middle part is made with a groove accommodating the finger 18. The finger 18 in its middle part is located in the hole at the end of the intermediate link in the form of a rod 19 , which passes through the corresponding holes in the bearings 15 and 16. The opposite end of the rod 19 contains a cylindrical socket for articulating with the lead 10. The lead 10 at the end is made with a mating element, for example, in the form of a sphere located in the said socket of the rod 19. Supports 15 and 16 performed Ways with protrusions for centering the springs 14 along their inner diameter. The distance between the hole of the rod 19 under the finger 18 and the head of the cylindrical socket at the opposite end of the rod regulates the length of the springs 14 when they are mounted inside the spar.

 Suspension assembly begins on the side of the open end of the spar 1. An assembled unit is introduced into the spar cavity, consisting of a pre-compressed pair of springs 14 with supports 15 and 16, fixed in the initial position by the link 19. In this position, the head of the link 19 touches the support 15, and the pin 18 located in the support seat 16. The named assembly moves to the extreme window 3 and is fixed through the corresponding holes in the side member 1 by bolts by screwing the latter into the threaded holes of the collars 17. Then a lead 10 is inserted into the window 3, the end of which is installed I am in the socket of the thrust head 19. After that, the axis 8 is introduced into the lower part of the leash 10 through the holes in the brackets 11, and the leash itself is fixed in the middle part of this axis. Then, supports 12 with bushings are inserted into the holes of the brackets 11, covers 13 are put on the axis 8 and bolted together to the brackets 11. At the ends of the axis 8, the balancers 6 are mounted and bolted with the help of yokes 9. The lower part of the balancer is assembled in a similar way. The axis 5 with the support roller 4 mounted on it is bolted to the balancers 6 using yokes 7. The assembly of the other suspensions is carried out in a similar way.

 When the vertical force acts on the roller 4, the balancers 6 rotate together with the axis 8 and the leash 10, causing the rod 19 to move. Acting on the support 16 through the pin 18, the rod causes additional deformation of the spring 14, since the support 15 remains stationary.

Sources of information
1. V.A. Rodichev, G.I. Rodichev. Tractor DT-75. -M.: Higher School, 1974, pp. 123-129.

 2. Tractor T-180. Manual for device and operation. V / o "Traktoroexport", M., pp. 89-90.

 3. Auto USSR N 846367, B 62 D 55/16, publ. July 15, 81 - a prototype.

Claims (1)

 Suspension of track rollers of a tracked vehicle, containing an elastic element in the form of a spring located along the frame with supports at its ends, one of the supports being connected to the frame and the other through the intermediate link to the two-arm balancer, the two-arm balancer is hinged to the frame, with one end the balancer is pivotally connected to the support roller, and the other is also pivotally to the intermediate link, characterized in that the frame is made of hollow spars, the spar is open from one of the ends, made with windows according to the number of balancers and contains brackets with with the shells on the sides of the windows, the springs are arranged in pairs inside the spar, the rear spring support in their central part is made with a cylindrical socket and contains a finger located in the hole at the end of the intermediate link in the form of a rod, the second end of which contains a cylindrical socket of the hinge, while one shoulder of the balancer motionlessly connected with the axis of the suspension and is made with an element forming a hinge interacting with the named socket, and its other shoulder is made in the form of levers located symmetrically on both sides of the spar and also fixedly connected to the axis of the suspension with the possibility of rotation in the bushings of the brackets, while the opposite end of the balancer is fixedly connected with the ends of the axis of the roller, and the roller itself is located between the said levers of the balancers.

Images