JPH082207A - Rear axle housing used in rear two-axle wheeler - Google Patents

Abstract

PURPOSE:To make a side gap properly adjustable, and further to facilitate the adjustment as well as to make improvements in steering stability. CONSTITUTION:Two adjusting bolts 15 and 15 are made projectable or retractable of its tip to or from side gaps G and G to be formed in space between rear leaf springs 31, 31 and leaf spring brackets 12, 12 and then pierced through and screwed in these leaf spring brackets 12 and 12, and subsequently the bolts are locked to the leaf spring brackets 12 and 12 by a locking nuts 16 and 16.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a rear axle housing used in a rear two-axle vehicle.

[0002]

BACKGROUND ART Normally, in this type of rear two-axle vehicle, for example, a large rear-two-axle truck, the tandem axle trunnion-type rear axle is excellent in driving force, and particularly good on rough roads.
Suspension is adopted. The tandem axle trunnion type rear suspension is rotatably supported by the left and right trunnion shafts supported by the left and right trunnion brackets on the left and right side rails of the frame on the truck and the left and right trunnion shafts. Left and right rear leaf springs that support the drive and dead axles at the front and rear ends, and left and right fronts that connect the drive axle to its trunnion bracket below the trunnion shaft and drive axle. The lower torque rod and the left and right rear lower torque rods that connect the dead axle to the trunnion bracket below the trunnion shaft and dead axle, and its rear leaf splices. A front upper torque rod connecting the drive axle to the frame above the rail and a rear upper torque rod connecting the dead axle to the frame above the rear leaf springs. Can be assembled with.

In the tandem axle trunnion type rear suspension in which the rear leaf spring is fixed to the axle housing by the leaf spring bracket, the rear leaf spring and the leaf Since there is a side gap with the spring bracket, the leaf spring bracket is
The plate is welded and the wear plate is subjected to its rear leaf springs to avoid lateral wear of the rear leaf springs. However, in such a rear axle supporting method, since the side gap is adjusted by the shim, it is very difficult to make the side gap proper, and it is difficult to improve the steering stability. .

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rear axle used for a rear two-axle vehicle, which allows the side gap to be properly adjusted, facilitates the adjustment, and improves steering stability. -In the provision of housing.

[0005]

Means corresponding to the object and the operation thereof
An adjustment bolt allows the tip to project and retract into the side gap formed between the rear leaf spring and the leaf spring bracket to allow the leaf
It is threaded through the spring bracket and then locked into its leaf spring bracket with a lock nut, and its adjusting bolt adjusts its side gap and also its offset rear leaf. -The spring is being received by the tip of the adjusting bolt.

Further, according to the present invention, the adjusting bolt is
The leaf spring bracket is threaded through the leaf spring bracket with the tip protruding and retractable into the side gap formed between the leaf spring bracket and the lock nut. To prevent loosening,
Also, a wear plate is supported on the tip of the adjusting bolt by allowing the rear leaf spring to be received in the side gap, and the adjusting bolt and the wear plate adjust the side gap, and It is about to receive the laterally displaced rear leaf springs on its wear plate.

[0007]

DESCRIPTION OF SPECIFIC EXAMPLES Specific specified examples of the rear axle housing used in the rear axle of the present invention will be described below with reference to the drawings. 1 and 2 show a specific example 10 of a rear axle housing used in a rear two-axle vehicle of the present invention, which is applied to a large truck in which a tandem axle trunnion type rear suspension 30 is utilized. Shows. Its rear axle
The housing 10 is embodied in a dead axle housing, which is combined with a dead axle shaft 21 to form a dead axle 20 and whose tandem axle trunnion type rear suspension 30 allows the heavy-duty truck. Supported by the frame. Of course, the tandem axle trunnion type rear suspension 30 is
Trunnion shafts supported by left and right trunnion brackets on the left and right side rails of the frame,
The trunnion shaft is rotatably supported on the front and rear ends of the drive axle and its dead axle 2
Left and right rear leaf springs 31 and 3 supporting 0
1 and left and right front lower torque rods connecting the drive axle to the trunnion bracket below the trunnion shaft, and the dead axle 20 below the trunnion shaft to the trunnion bracket. The left and right rear lower torque rods that are connected to the front lower torque rods that connect the drive axle to the frame above the rear leaf springs 31, 31 and the rear leaf It is assembled above the springs 31, 31 with a rear upper torque rod connecting the dead axle 20 to the frame.

The dead axle housing 10
Are the left and right spring seats 11, 11 formed on both ends of the upper surface thereof, and the left and right leaves corresponding to the left and right spring seats 11, 11 and integrally projected on both end sides of the upper surface thereof.・ Spring bracket 1
2, 12 and left and right rear lower torque rod brackets 1 which are integrally projected at both ends of the lower surface thereof
3 and 13 and a rear upper torque rod bracket 14 which is integrally projected on the upper surface at the center in the longitudinal direction, a tube structure is adopted, and there are left and right adjusting bolts. The leaf spring brackets 15, 12 are made releasable by projecting their tips into side gaps G, G formed between the rear leaf springs 31, 31 and the leaf spring brackets 12, 12. Is threaded through and is locked in its leaf spring brackets 12,12 with lock nuts 16,16.

The left and right leaf spring brackets 12 and 12 are drilled with bolt holes 17 and 17 facing the side surfaces of the rear leaf springs 31 and 31, respectively, and the adjusting bolts 15 and 15 are attached to the left and right leaf spring brackets 12 and 12. Screw it in.

The left and right adjusting bolts 15 and 15 are rotated in the bolt holes 17 and 17 in a screwing direction and a returning direction to bring their tips close to the side surfaces of the rear leaf springs 31 and 31, and , So that the side gaps G, G can be properly and easily adjusted. Further, the adjusting bolts 15 and 15 receive the rear leaf springs 31 and 31 when the rear leaf springs 31 and 31 are laterally displaced, and the lateral leaf springs 31 and 31 are laterally displaced. By its leaf spring bracket 12,12
Avoid wear of. Of course, when the tip of the bolt is worn away, the lock nuts 16 and 16 are loosened and the adjusting bolts 15 and 15 are screwed into the bolt holes 17 and 17, so that the side gaps G and G are properly maintained. Be drunk

The left and right spring seats 11, 1
1, left and right leaf spring brackets 12, 1
2, left and right rear lower torque rod bracket 1
3, 13 and the rear upper torque rod bracket 14 are formed in a normal shape.

Also, the dead axle shaft 2
1 is normally fitted to the dead axle housing 10 by extending both ends thereof outwardly from both ends of the dead axle housing 10 and rotatably supporting idler wheels at both ends thereof. To do.

The dead structure in which the above-mentioned structure is adopted
The axle housing 10 has springs
The rear ends of the left and right rear leaf springs 31, 31 are placed on the seats 11, 11, and are stopped by the left and right leaf spring brackets 12, 12 to be the tandem axle trunnion type rear suspension. It is supported by the frame of the heavy truck by 30. Thus, when the dead axle housing 10 is set, the left and right adjustment bolts 15, 1
5, the lock nuts 16, 16 are previously fitted in appropriate positions, and screwed correspondingly into the bolt holes 17, 17 of the left and right leaf spring brackets 12, 12.

The adjusting bolts 15 and 15 are screwed in the bolt holes 17 and 17 in the screwing direction, and
The tip is projected into the side gaps G, G by being rotated in the returning direction, and the side gaps G, G are properly and easily adjusted by retracting. Thereafter, the lock nuts 16 and 16 are tightened so that the adjusting bolts 15 and 15 are prevented from loosening on the leaf spring brackets 12 and 12. Therefore, when the rear leaf springs 31, 31 are laterally displaced when the heavy truck travels, the adjusting bolts 15,
15 is the tip of the rear leaf spring 31,
31 and its leaf spring bracket 1 due to the lateral offset of its rear leaf spring
Avoid 2,12 wear. Further, since the side gaps G, G are properly adjusted by the adjusting bolts 15, 15, steering stability is improved for the large truck.

FIG. 3 shows the aforementioned tandem axle.
Fig. 9 shows a specific example 40 of a rear axle housing used in a rear two-axle vehicle of the present invention, which is applied to a large truck in which a trunnion type rear suspension 30 is utilized. This rear axle housing 40
The left and right wear plates 41, 41 are added to the aforementioned rear axle housing 10, and the side gaps G, G can be adjusted appropriately. In this case, the wear plate 4
Since 1, 41 are additionally used, their side gaps G, G can be adjusted by slightly screwing their adjusting bolts 15, 15 and also fine adjustment is possible.

The wear plates 41, 41 are capable of receiving the rear leaf springs 31, 31 in the side gaps G, G thereof, and the adjusting bolt 1 thereof.
It is supported by the tips of 5, 15. In this case,
The plates 41, 41 are provided with countersinks 42, 42 on one surface thereof, and the countersinks 42, 42 are fitted into the adjustment bolts 15, 1.
The rear leaf springs 31, 31 are fitted and supported on the tips of the five and can be displaced laterally.

FIG. 4 shows the aforementioned tandem axle.
Fig. 5 shows a specific example 50 of a rear axle housing used in a rear two-axle vehicle of the present invention, which is applied to a large truck in which a trunnion type rear suspension 30 is utilized. This rear axle housing 50
The side gap adjusting mechanism provided in the aforementioned rear axle housing 10 is being modified and configured. In the rear axle housing 50, the left and right wear plates 51, 51 are the rear leaf
A side gap G formed between the springs 31 and 31 and the leaf spring brackets 12 and 12,
G, and left and right fixing bolts 52, 52 are correspondingly passed through the sink holes 53, 53 of the wear plates 51, 51 to move the heads 54, 54 into the sink holes 53, 53.
53, the leaf spring brackets 12, 12 are correspondingly penetrated into the support holes 17, 17 of the leaf spring brackets 12, and are tightened with nuts 55, 55 with spring washers 56, 56 interposed. The wear plates 51, 51 are removably and fixedly supported by the corresponding leaf spring brackets 12, 12.

As will be apparent from the specific embodiments of the invention described above with reference to the drawings, those of ordinary skill in the art to which the invention pertains are subject matter of the invention. Is the nature of the invention (na
It is easily embodied in other embodiments that are derived from the true) and substance and that are objectively recognized as having them internalized. Of course, the contents of the present invention are indispensable for the establishment of the invention corresponding to the subject of the invention.

[0019]

Benefits of the Invention As can be seen from the above, the rear axle housing used in the rear axle of the present invention comprises:
An adjustment bolt allows the tip to project and retract into the side gap formed between the rear leaf spring and the leaf spring bracket to allow the leaf
In the rear axle housing used in the rear axle of the present invention, the side bracket is threaded through the spring bracket and is then secured to the leaf spring bracket with a lock nut.
The adjustment bolt allows the gap to be adjusted properly and easily, and the side gap can be readjusted as the tip wears.
Properly maintaining the gap improves the steering stability of the rear two-axle during traveling, and as a result, is very useful and practical for the subsequent two-axle.

In the rear axle housing used in the rear axle of the present invention, the adjusting bolt projects the tip into the side gap formed between the rear leaf spring and the leaf spring bracket. It is retractable and threaded through its leaf spring bracket, and is secured to its leaf spring bracket with a lock nut, and the wear plate also has its rear leaf in its side gap. Since the spring can be received and supported by the tip of the adjusting bolt, in the rear axle housing used in the rear axle of the present invention, the side gap is properly adjusted by the adjusting bolt and the wear plate. Moreover, it can be easily adjusted,
The side gap can be readjusted according to wear of the wear plate, and by maintaining the side gap properly, steering stability is improved for the rear two-axle vehicle during running, As a result, it is then very useful and practical for two-axle vehicles.

[Brief description of drawings]

FIG. 1 is a rear axle used in a rear axle of the present invention, which is applied to a large truck in which a tandem axle trunnion type rear suspension is utilized.
It is the perspective view which showed the specific example of the housing.

FIG. 2 is a partially enlarged view of the rear axle housing shown in FIG. 1 with a partial cross section thereof.

FIG. 3 corresponds to FIG. 2 and is a tandem axle
FIG. 6 is a partially enlarged view showing a specific example of a rear axle housing used for a rear two-axle vehicle of the present invention applied to a heavy-duty truck in which a trunnion type rear suspension is used.

4 corresponds to FIG. 2 and is a tandem axle;
FIG. 6 is a partially enlarged view showing a specific example of a rear axle housing used for a rear two-axle vehicle of the present invention applied to a heavy-duty truck in which a trunnion type rear suspension is used.

[Explanation of symbols]

 11 Spring Seat 12 Leaf Spring Bracket 15 Adjustment Bolt 16 Bolt Hole

Claims (2)

[Claims] 1. An adjustment bolt is threadedly threaded through the leaf spring bracket so that the adjustment bolt has a tip protruding and retractable into a side gap formed between the rear leaf spring and the leaf spring bracket, and Rear axle housing used on rear two-axle, where lock nuts lock it to its leaf spring bracket. 2. An adjustment bolt is threadedly threaded through the leaf spring bracket so that the adjustment bolt is projectable and retractable into a side gap formed between the rear leaf spring and the leaf spring bracket, and , The lock nut is loosely secured to its leaf spring bracket, and the wear plate is supported at the tip of its adjusting bolt, allowing its rear leaf spring to be received in its side gap. Rear axle housing used for rear two-axle vehicles.