RU219944U1 - Truck cab suspension - Google Patents

Abstract

The utility model relates to the field of transport engineering, namely, suspension cabs of trucks. Truck cab suspension contains front pivot bearings (1) with levers (6) and rear bearings (2). Each front and rear support (1), (2) is made in the form of a package of elastomers (4) and a shock absorber (11), (27). The front supports (1) are rigidly connected by a beam (7), on which a lever (17) is installed to ensure longitudinal stability, the second end of which is fixed to the frame (3) of the vehicle, and a U-shaped lever (19), fixed with a bracket (20 ) on the frame (3) of the vehicle with the possibility of turning to ensure lateral stability. A bracket (21) with a hole (22) is also fixed on the beam (7) for fixing the front supports (1) when the cab is tilted. The technical result is to reduce vibration and oscillations on the cab, control mechanisms and the driver's seat due to the non-linear dependence of the deformation of the elastomer package on the magnitude of the external load. 5 ill.

Description

The utility model relates to the field of transport engineering, namely, suspension cabs of trucks.

Known suspension of the car, containing made in the form of longitudinal leaf springs, rigidly connected by the middle part with the bridge, the guide device, elastic elements, shock absorbers (Patent No. 2236955, IPC V60G 11/46, publ. 09/27/2004). However, this suspension is not intended for the cab of a vehicle and does not reduce the oscillations and vibrations of the cab while the vehicle is in motion.

Devices are also known (patent for industrial design No. 128615, MKPO 12-16, publ. 11/30/2021 and patent for invention No. 2767801, IPC F16F 13/06, F16F 1/40, publ. 03/22/2022), in which it is proposed to replace the elastic elements of car suspensions with a package of elastomers.

The rigid suspension of the cab of the KamAZ vehicle is known, containing the front hinged bearings, torsion arms and rear bearings (Fig. 3 and 4, pages 10 and 11 in the textbook - Osyko V.V., Petrichenko I.Ya., Alenov Yu. A., Tsvetkov V.N., Lysov M.A., Device and operation of the KamAZ-4310: Textbook. - M.: Patriot, 1991. - 351 p.). However, the disadvantage of this suspension is the rigidity of the structure, which transmits all the bumps in the road directly to the cab of the car and the driver.

The development of this design is the description of the invention to the patent RU 2306238 (IPK B62D 33/077, B60G 21/00, B60G 11/46, publ. in the form of a spring and a shock absorber, and the front supports are rigidly connected by a beam, on which a lever is installed to ensure longitudinal stability, the second end of which is fixed to the vehicle frame, a U-shaped lever is installed on the beam to ensure lateral stability. A bracket with a hole for fixing the front supports when the cab is tilted is fixed on the beam. This achieves a reduction in the level of vibration and vertical vibrations on the cab of the car and the driver, as well as the creation of comfortable conditions for the driver. This vehicle suspension system was chosen as a prototype.

It should be noted that the solution of the problem aimed at reducing the level of vibration loading under various operating conditions is possible due to the optimal choice of the elastic characteristic of the cab suspension. Often, a progressive elastic characteristic of the suspension is required, which can be provided through the use of adjustable suspensions, or a combination of several elastic elements. This problem can be solved by using elastomeric materials as an elastic suspension element that provides the necessary requirements for the magnitude of deformation depending on the magnitude and speed of loading. This is achieved by replacing the springs in the truck cab suspension with a package of elastomeric materials that change the suspension stiffness from zero in the absence of deformation to the stiffness of a rubber stop that works when the package is deformed equal to the suspension travel.

The proposed technical solution is illustrated by drawings, which show:

figure 1 - shows a diagram of the suspension cab of a truck,

figure 2 - view A in figure 1, rear support;

figure 3 - view B in figure 1, the front support;

figure 4 - view B in figure 1;

figure 5 - view D in figure 1.

The truck cab suspension includes front supports 1 and rear supports 2. The front support 1 includes a frame 3, a package of elastomeric elements 4, a bracket 5, to which a lever 6 is rigidly attached and a beam 7 with a bolted connection. their stiffness with increasing strain. The levers 6 on the other side are fixed on the bracket 8 by means of rubber spherical gaskets 9, and the brackets 8 are mounted on the frame 3 of the car. The levers 6 ensure the vertical stability of the front support 1. The spherical spacers 9 allow the levers 6 to move at a certain angle during the operation of the elastomeric element 4 (compression - tension). A bracket 10 is mounted on the lever 6, on which the shock absorber rod 11 is fixed.

The shock absorber hydraulic cylinder 11 is fixed on the plate 12 mounted on the frame 3 of the vehicle. Bracket 5 is designed for mounting the hinged support 13 of the cab of the truck. The swivel support 13 is installed on the floor 14 of the cab by means of a threaded connection. Bracket 5 and hinge support 13 allow tilting the cab to provide access to the engine compartment, this is done when the cab is rotated about the axis on which the pin 15 is installed.

The beam 7 connects the two front supports 1 and ensures the synchronization of these supports 1. A bracket 16 is installed on the beam 7, on which one end of the lever 17 is fixed by means of spherical spacers, and the other end of the lever 17 is similarly fixed to the frame 3. This lever 17 provides longitudinal stability cabin hangers. Lugs 18 are installed on the beam 7, which serve to fasten the U-shaped lever 19 to ensure the lateral stability of the suspension. The U-shaped lever 19 is mounted on the frame 3 of the car using brackets 20, which allows this lever to rotate at a certain angle during suspension operation, but at the same time keep the suspension from excessive vibrations and movement in the transverse direction. The U-shaped lever 19 is fixed in the lugs 18 by means of a bolted connection and spherical gaskets.

A bracket 21 is installed on the beam 7 with a hole 22 for interacting with the bracket 23 and a hole 24 for fixing the front supports 1 when the cab is tilted, this is done by combining these holes and installing a latch in the form of a finger in them. Rear support 2 includes bracket 25, bottom cup 26, shock absorber 27, elastomer package 28, top cup 29, rubber pad 30 and bracket 31 for attaching the rear of the cab. Shock absorber 27 and elastomer package 28 work together.

Truck cab suspension works as follows:

Vibrations in the frame 3 of the truck, which occur when driving on uneven roads, are transmitted to the cabin floor 14 through a package of elastomers 4, 28 front and rear supports, a synchronization mechanism in the form of a beam 7, shock absorbers 11, 27, which provides primary damping of the maximum amplitude values low-frequency and high-frequency vibrations in various planes. To damp vibrations and vibrations, spherical gaskets 9 are provided, installed in the joints of the suspension parts. To eliminate sharp horizontal and vertical vibrations, a lever 17 is installed to ensure longitudinal stability and a U-shaped lever 19 to ensure lateral stability. Multi-stage damping of vibrations by suspension elements reduces the level of vibration on the control mechanisms and the driver's seat.

The proposed suspension of the cab of a truck can significantly improve the operating conditions of a truck, reduce the level of vibration and vertical oscillations on the cab, control mechanisms and the driver's seat. The proposed truck cab suspension creates comfortable conditions for the driver.

The proposed technical solution is possible for implementation on standard process equipment.

Claims (1)

Cabin suspension of a truck, containing front hinged supports with levers and rear supports, while the front supports are rigidly connected by a beam, on which a lever is installed to ensure longitudinal stability, the second end of which is fixed to the vehicle frame, and a U-shaped lever, fixed with a bracket on the frame of the car with the ability to rotate to ensure lateral stability, while on the specified beam there is also a bracket with holes for fixing the front supports when the cab is tilted, characterized in that each front and rear support is made in the form of a package of elastomers, the rigidity of which changes from zero when the absence of deformation to the rigidity of the rubber stop at the maximum value of the deformation of the suspension and shock absorber.