CN201843901U

CN201843901U - Bearing clearance adjusting device for balance shaft of heavy-duty truck

Info

Publication number: CN201843901U
Application number: CN2010202743468U
Authority: CN
Inventors: 马生平; 尹华清; 武小卫; 王星斌; 李金海
Original assignee: Shaanxi Heavy Duty Automobile Co Ltd
Current assignee: Shaanxi Heavy Duty Automobile Co Ltd
Priority date: 2010-07-26
Filing date: 2010-07-26
Publication date: 2011-05-25
Anticipated expiration: 2020-07-26

Abstract

The utility model discloses a bearing clearance adjusting device for a balance shaft of a heavy-duty truck. The bearing clearance adjusting device comprises the balance shaft and a balance shaft shell, wherein the end part of the balance shaft is arranged in the balance shaft shell through a bearing. The bearing clearance adjusting device is characterized by also comprising a bearing pressing block and an adjusting spacer, wherein the bearing pressing block is arranged on the end face of the balance shaft through a bolt and limits the axial displacement of a bearing inner ring; and the adjusting spacer is arranged between the end face of the balance shaft and the bearing pressing block and is used for adjusting a clearance between the bearing pressing block and the end face of the bearing inner ring. The assembly speed is ensured, and the assembly cost is saved.

Description

Heavy duty truck balance shaft bearing lash adjusting device

Technical field

The utility model relates to the heavy duty truck equalizing suspension system, relates in particular to the balance shaft bearing lash adjusting device of suspension system.

Background technique

For a long time, the trunnion shaft of heavy duty truck equalizing type of suspension all adopts angle joint ball spherical bearing, advantage such as that this bearing has is simple in structure, bearing capacity is big, wear resistance is good, as shown in Figure 1.But must guarantee the certain clearance amount between this bearing inner race 42 and the outer ring 41, the too small easy locking in gap, excesssive gap weares and teares easily.The gap value of the inside and outside circle of heavy duty truck balance shaft angle joint shaft bearing is generally 0.1～0.3mm.At present, heavy duty truck equalizing type of suspension balance shaft bearing lash adjusting device as shown in Figure 2, the structure more complicated, the bearing play will be in balance shaft housing 3 inside be adjusted pad 6 and be adjusted by installing between dividing bush 9 and angle joint ball spherical bearing 4.Because will adjust in the inside of balance shaft housing 3, cause relatively difficulty of operation, must adopt special tooling equipment to adjust, workload is big and adjustment is slow, is difficult for check.In high volume production process, owing to heavily waiting reason, production task is difficult to control this gap value, even assemble by rule of thumb, cause 0.1～0.3mm value of bearing play and designing requirement to differ greatly, to cause the bearing premature wear like this, maintenance cost is higher, can cause oil sealing to damage faults such as leakage of oil after the bearing wear simultaneously.In addition, also there is complex structure in this regulating device, and cost is higher, assembles shortcomings such as slow.

The applicant has proposed a kind of new balance shaft bearing lash adjusting device at above-mentioned deficiency, and this apparatus structure is simple, and cost is low, is convenient to assembling, maintenance and quality control.

The model utility content

The purpose of this utility model is to solve heavy duty truck equalizing type of suspension balance shaft bearing lash adjusting device complex structure, and it is big to adjust workload, and adjusting needs special tooling equipment, and cost is too high, shortcomings such as difficult quality control.

The scheme that its technical problem that solves the utility model adopts is:

A kind of heavy duty truck balance shaft bearing lash adjusting device, comprise: trunnion shaft and balance shaft housing, the end of described trunnion shaft by Bearing Installation in balance shaft housing, it is characterized in that, also comprise the bearing briquetting and adjust pad, described bearing briquetting by bolt be installed in the trunnion shaft end face, the restriction described bearing inner race axial displacement, described adjustment pad is used to adjust the gap between described bearing briquetting and the bearing inner race end face between trunnion shaft end face and bearing briquetting.

Said apparatus will be improved at the trunnion shaft end face in the inner directly adjustment of balance shaft housing bearing play and adjust indirectly by trunnion shaft and bearing briquetting, just between trunnion shaft end face and bearing briquetting, install and adjust pad, adjust the bearing play by the adjustment pad that different-thickness is installed.

The using method of said apparatus is: adjust the thickness of pad by the gap between measurement axis pressure block and the bearing face, till the gap of measuring meets design requirement.

The beneficial effects of the utility model are: this apparatus structure is simple, has cancelled dividing bush in the past and the special-purpose frock of adjusting, and has reduced cost, has accelerated assembling speed simultaneously, has saved assembly cost.This balance shaft bearing lash adjusting device can effectively guarantee the bearing play adjustment amount, and quality is controlled easily, and faults such as the past bearing damages in early days, leakage of oil significantly reduce, and have saved after cost, make the quality of product obtain bigger lifting.

Description of drawings

Fig. 1 is an angle joint ball spherical bearing longitudinal sectional drawing;

Fig. 2 is the longitudinal sectional drawing of heavy duty truck balance shaft bearing lash adjusting device in the past;

Fig. 3 is a longitudinal sectional drawing of the present utility model;

Among the figure, identical label is represented identical part:

1. trunnion shaft support 2. bearing oil cappings 3. balance shaft housings 4. angular contact articulated bearings

41. outer ring 42. inner rings, 5. trunnion shafves 6. are adjusted pad

7. bearing briquetting 8. bolts 9. dividing bushes

Embodiment

Describe below in conjunction with the example of accompanying drawing the utility model heavy duty truck balance shaft bearing lash adjusting device.

Referring to accompanying drawing 3, in the utility model heavy duty truck balance shaft bearing lash adjusting device, trunnion shaft 5 is installed on the trunnion shaft support 1, its end is installed in the balance shaft housing 3 by a pair of angular contact articulated bearing 4, wherein, seal and the restrictive axial displacements by bearing oil capping 2 away from trunnion shaft 5 bearing at end 4.Be positioned at trunnion shaft 5 bearing at end 4 and limit the axial displacement of its inner ring by bearing briquetting 7, bearing briquetting 7 is to be fixedly mounted on the end face of trunnion shaft 5 by bolt 8 simultaneously.The utility model has added adjustment pad 6 between the end face of trunnion shaft 5 and bearing briquetting 7, be used to adjust the gap between bearing briquetting 7 and the bearing 4 inner ring end faces.

Being positioned at trunnion shaft 5 bearing at end 4 is usually designed to and requires certain bearing play, for example 0.1-0.3mm.By accompanying drawing 3 as can be seen, under this kind structure, can the inner ring and the outer ring of bearing 4 be adjusted to 0 gap by turning bolt 8, the gap between this moment bearing 4 and the bearing briquetting 7 is exactly the axially movable gap of inner ring of bearing 4, the just gap between inner ring and the outer ring.Between trunnion shaft 5 end faces and bearing briquetting 7, install this moment and adjust pad 6,, and adjust the thickness that pad 6 is installed in view of the above, just can be met the bearing play of designing requirement by the gap A between measurement bearing 4 and the bearing briquetting 7.Therefore, when being adjusted into the zero clearance between the inner ring of described bearing and the outer ring, the measurement clearance between described bearing briquetting and the bearing inner race end face is exactly the design gaps between bearing inner race and the outer ring.

The utility model heavy duty truck balance shaft bearing lash adjusting device is applicable to that all equalizing type of suspension trunnion shafves adopt angular contact articulated bearing and other to have the heavy-duty car of the bearing of Internal and external cycle.

Described example only is applicable to explanation, explanation and understands the utility model better that be used to limit the utility model anything but, protection domain of the present utility model is determined by claims.

Claims

1. heavy duty truck balance shaft bearing lash adjusting device, comprise: trunnion shaft and balance shaft housing, the end of described trunnion shaft by Bearing Installation in balance shaft housing, it is characterized in that, also comprise the bearing briquetting and adjust pad, described bearing briquetting by bolt be installed in the trunnion shaft end face, the restriction described bearing inner race axial displacement, described adjustment pad is used to adjust the gap between described bearing briquetting and the bearing inner race end face between trunnion shaft end face and bearing briquetting.

2. heavy duty truck balance shaft bearing lash adjusting device as claimed in claim 1 is characterized in that described bearing is an angular contact articulated bearing.