The device for fixing the transfer case

 

The invention relates to a transport machine building, and is intended for mounting units, for example, transfer boxes, on the vehicle, namely, high-speed contact suspensions. The device for fixing the transfer case includes a support, each of which is made in the form of a sleeve associated with the supporting element of the transfer case housing rigidly mounted on a support element of the vehicle, and an elastic element located between the sleeve and the casing. Transfer case attached to the sub-frame mounted on a support element of the vehicle by means of three supports, housing one of which is mounted on the crossbar of the support member from the side of the input shaft of the transfer case and the case of the other two support legs on the crossbar of the support member from the output shaft of the transfer case to the rear axle. The supporting elements are made on a stretcher. The technical result - the reduction of vibrations transmitted from the transfer box to the supporting element of the vehicle. 5 Il.

The invention relates to a transport machine building, and is intended for mounting units, for example handout want a supporting fingers, located in the sleeve of elastic material mounted in brackets attached to the side members of the frame of the vehicle, and one supporting finger is located between the shelves of the spar on two bushings and specifies certain transfer case position in space, and the second under the bottom shelf of another spar on one sleeve and serves only to maintain the transfer case and prevent its rotation relative to the first finger.

However, because of the small distance between the elastic bushings on the abutment finger to enforce a particular provision of the transfer box in space must be rigid, which reduces the effectiveness of vibration isolation transfer case from the vehicle chassis.

Also known installation of the power unit of the vehicle [2], containing supports, each of which is made in the form of a sleeve associated with the supporting element of the transfer case housing rigidly mounted on a bearing element (the body or frame) of the vehicle, and an elastic element located between the sleeve and the casing.

This solution closest to the offer.

The disadvantage of this solution is that the elastic TNA is Emesene transfer box around the transverse axis of the vehicle, passing through the support, from the longitudinal forces, perceived elastic coupling with the centering element located between the shafts of the gearbox and transfer box, which affects the working conditions of shafts and gears, leads to increased vibration of the transfer case, as well as vibration and noise in the passenger compartment of the vehicle.

Technical result achieved the stated solution is to reduce vibration transmitted from the transfer box to the supporting element of the vehicle.

This result is achieved in that the transfer case attached to the sub-frame mounted on a support element of the vehicle by means of three supports, housing one of which is mounted on the crossbar of the support member from the side of the input shaft of the transfer case and the case of the other two support legs on the crossbar of the support member from the output shaft of the transfer case on the rear axle and the supporting elements are made on a stretcher.

The proposed solution is illustrated in the drawings, in which: Fig.1 - General view of the device from the side, Fig.2 - General view of the device in plan, Fig.3 - section a-a, Fig.4 - section b-B, Fig.5 - section-Century

The device for fastening razdacha elements 2. The frame 1 is mounted on a support element of the vehicle by means of three legs 3, each of which consists of a sleeve 4 that is associated with the supporting element 2, the housing 5, is rigidly mounted on a support element of the vehicle, and the elastic element 6 located between the sleeve 4 and the housing 5. Case 5 one of the supports 3 are mounted on the crossbar of the support member from the side of the input shaft of the transfer case and the case of the other two supports 3 - on the cross support member from the output shaft of the transfer case to the rear axle.

When working transfer case bearing 1 perceive the weight of the transfer case, the reactive torque, inertia and vibration loads. The placement of the supports 3 by using the sub-frame 1 at a greater distance from each other can reduce the stiffness of the elastic elements 6 and thereby to increase the efficiency of isolation of the passenger compartment of the vehicle from the transfer case, as well as to eliminate the influence of the error of installation of the transfer case and its movement on the operation of the transmission units.

Testing of prototypes at OJSC"GAZ" confirmed the effectiveness of the proposed solution. By installing this device on AB is astatichno boxes. RF patent 2026207, 1995.

2. The power plant of the vehicle. Auth. St. 812610, 1979 - prototype.

Claims

The device for fixing the transfer case containing the supports, each of which is made in the form of a sleeve associated with oparnym element of the transfer case housing rigidly mounted on a support element of the vehicle, and an elastic element located between the sleeve and the casing, characterized in that the transfer case attached to the sub-frame mounted on a support element of the vehicle by means of three supports, housing one of which is mounted on the crossbar of the support member from the side of the input shaft of the transfer case, and the case of the other two support legs on the crossbar of the support member from the output shaft of the transfer case on the rear axle and the supporting elements are made on a stretcher.

 

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