SU1229117A2 - Device for tightening vehicle track chain - Google Patents

Description

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FIELD OF THE INVENTION The invention relates to vehicle engineering, in particular to tracked vehicles.

The purpose of the invention is to provide a smooth change in the load on the tension wheel by uniformly changing the matching of the elastic diaphragm with the surface of the conical socket.

Figure 1 shows the device, side view; figure 2 - hydraulic cylinder in the initial position of the diaphragm; fig.Z - the same, with the working position of the diaphragm; Fig. 4 shows the force characteristic of the tension wheel.

A device 1 for tensioning and depreciating the track of the track 2 with the aid of a bracket 3 is mounted on the frame 4 of the vehicle trolley and the rod 5 is connected with the tension wheel 6.

The device consists of two communicating coaxially connected 7 cone-shaped cylinders of various diameters — tension 8 and power 9. In the internal cavity of the tension hydraulic cylinder 8 there is a plunger Yu rigidly connected to the rod 5. The power hydraulic cylinder 9 is made with two flanges 11 and 12 “One of which is attached to the socket 7, rigidly connected to the tensioning hydraulic cylinder 8, and the second with POM01SH-1 bolts 13 is connected to the thrust cover 14, by means of a spherical recess of which the device 1 is mounted on the stop 15 of the bracket 3 Frame 4 vehicle trolley. In the power cylinder 9, between the ring collar 16, through the rigid gasket 17 and the end face of the support collar 14, a damping spring 18 is installed with a preliminary compression force. The surface 19 of the conical socket 7 and the gasket 17 is fitted with an elastic diaphragm 20, the outer ring part 21 of which is fixed between the flanges of the conical socket 7 and the power cylinder 9 with bolts 22. In the bore 23 of the tension hydraulic head 8, between the end of the bore and the working surface 24 is elastic the diaphragm 20 through the rigid gasket 25 is installed spring 26 with a preliminary compression force, which creates an additional force to compress the elastic diaphragm 20 on the surface 19 of the conical socket 7. On the hydro, pindra

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8, a fitting 27 is installed for injecting and discharging the working fluid.

Before the start of the compression, when the force of pre-compression of the spring 18 exceeds the total force transmitted by the tension wheel to the plunger 10 and from the spring 26, the elastic diaphragm 20 is deformed and pressed to the inner surface 19 of the conical socket 7 over the entire area of the spring 18. Pressure of the elastic diaphragm 20 on the surface 19 of the conical socket 7 is determined by the deformation of the convex surfaces of the diaphragm by the pressure of the working fluid acting on it from the tension wheel 6 and the concentrated load applied to the working the surface of the specified diaphragm 20 from the spring 26.

At the same time, the stiffness of the spring 26 must be equal to the stiffness of the elastic diaphragm Ø 20, which will ensure the deformation of this diaphragm with a smaller effect on the preliminary compression force of the damping spring 18.

When acting on the tension wheel 6, the plunger 10, in its movement, pushes the working fluid from the cavity of the tensioning hydraulic cylinder into the cavity of the conical socket 7. Under the influence of an incompressible working fluid, the elastic diaphragm 20 nepe: f-: f. shrinks by compressing the spring 18. The middle part of the working surface of the elastic diaphragm 20 moves more due to the restriction of its outer part movement by the annular shoulder 16 and additional deformation from the concentrated spring force 26. The deformation of the elastic diaphragm 20 under the action of the spring 26 increases the pressure on the coupling its working surface with the surface of the conical socket 7, creating additional resistance to the opening of this conjugation, that o6ecnetfflBaeT a uniform increase in the diameter of the working surface of the dia- Fragm1a1, At the same time, the force characteristic of the device depends on the characteristics of the springs 18 and 26, which tighten the diaphragm, and on the angle of the cone of the socket 7.

The return of the tension wheel to its original position occurs in the opposite direction.

order

5 W at 25

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18

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eight

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Editor S.Patrusheva

Compiled by V. Dementyev Tehred I. Veres

Order 2410/17 Circulation 571 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. -4/5

Production and printing company, Uzhgorod, st. Project, 4

Fy

fj mm

Proofreader M. Pojo

Claims (1)

, A DEVICE FOR TENSIONING A TRACKED VEHICLE CHAIN CHAIN No. 948740, which includes the fact that, in order to smoothly change the load on the idler by uniformly changing the interface between the elastic diaphragm and the surface of the conical bell, it is equipped with a spring with a preliminary compression force installed in the bore of a smaller diameter cylinder between the end of the specified bore and the working surface of the elastic diaphragm.