CN115635813A - An air suspension bracket structure - Google Patents

Abstract

The invention discloses an air suspension bracket structure, comprising a bracket body and a drive mechanism connected to the bracket body, the drive mechanism is used to drive the movement of the guide arm, and the drive mechanism includes two wear-resistant groove sleeves arranged oppositely, Two groove adjustment plates, two square sleeves, pin bolts, thin nuts, and lock nuts. The wear-resistant groove sleeves are connected to both sides of the bracket body, and the wear-resistant groove sleeves are used to guide the groove adjustment plates. The square sleeve is inserted into the groove adjustment plate and the wear-resistant groove sleeve, the pin shaft bolt runs through the square sleeve, the groove type adjustment plate, the wear-resistant groove sleeve, and the bracket body, and the thin nut and lock nut are used for the pin shaft bolt Locking, the pin shaft bolt is connected with the guide arm, and the grooved adjustment plate is used to drive the square sleeve to move. The invention can change the relative position of the groove type adjusting plate on the height of the wear-resistant groove sleeve, thereby driving the axle to move forward and backward by a small amount through the guide arm, so as to achieve the purpose of adjusting the wheelbase.

Description

An air suspension bracket structure

technical field

The invention relates to the technical field of air suspension, in particular to an air suspension bracket structure.

Background technique

In order to improve the ride comfort of commercial vehicles, reduce fuel consumption, and reduce tire wear, especially with the entry into force and implementation of GB7258, more and more commercial vehicles, especially semi-trailers for hazardous chemicals, are equipped with air suspension devices. The bracket structure is the main load-bearing part in the air suspension suspension, which is very important.

On the one hand, due to the manufacturing accuracy of the air suspension itself, and on the other hand, due to the deviation of the semi-trailer factory in the installation and positioning of the air suspension bracket structure, the wheelbase deviation between the axles after the air suspension is installed is relatively large. Large and difficult to adjust the situation, resulting in deviation when the vehicle is driving, serious tire wear, uneven force on the left and right of the suspension, and easy deformation and damage of the suspension parts, which will affect the driving safety of the vehicle.

In the existing air suspension, the wheelbase of the support structure of a small number of manufacturers cannot be adjusted, and the wheelbase of the support structure of most manufacturers can be adjusted. However, the flexibility of adjustment needs to be improved, and there are always grooved adjustment plates, pin shaft bolts, and wear-resistant groove sleeves that are easy to wear and loosen. Therefore, there is still room for improvement in the existing air suspension bracket structure.

Contents of the invention

The purpose of the present invention is to provide an air suspension bracket structure, which is equipped with the advantages of easy adjustment of the wheelbase after the air suspension is installed, and greatly reduces the loosening and wear of the groove adjustment plate, pin shaft bolts, and wear-resistant groove sleeves , which solves the problems raised in the background art above.

In order to achieve the above object, the present invention provides the following technical solutions: an air suspension bracket structure, including a bracket body and a drive mechanism connected to the bracket body, the drive mechanism is used to drive the movement of the guide arm, and the drive mechanism includes an oppositely arranged Two wear-resistant groove sleeves, two groove-shaped adjustment plates, two square sleeves, pin bolts, thin nuts, and lock nuts, the wear-resistant groove sleeves are connected to both sides of the bracket body, and the wear-resistant groove sleeves are used Guided by the groove adjustment plate, the square sleeve is inserted into the groove adjustment plate and the wear-resistant groove sleeve, the pin shaft bolt runs through the square sleeve, groove adjustment plate, wear-resistant groove sleeve, and bracket body, the thin nut, The locking nut is used for locking the pin shaft bolt, and the pin shaft bolt is connected with the guide arm, and the grooved adjustment plate is used to drive the square sleeve to move.

Preferably, the driving mechanism further includes a step, the step is fixed to one end of the pin bolt, and the step matches the square hole provided in the square sleeve.

Preferably, two sides of the square sleeve are provided with connecting surfaces, and the connecting surfaces match the driving surfaces provided in the groove-shaped adjusting plate.

Preferably, inclined surfaces are provided on both sides of the groove-shaped adjusting plate, and the inclined surfaces match the guide surfaces provided in the wear-resistant groove sleeve.

Preferably, the bracket body is provided with a mounting hole, and the wear-resistant sleeve is welded to the mounting hole.

Preferably, the thin nut and the lock nut are threadedly connected with the pin shaft bolt.

Preferably, one end of the square sleeve is provided with an anti-slip surface, and the anti-slip surface is pressed against the end of the composite bushing.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a drive mechanism, which includes two wear-resistant groove sleeves, two groove adjustment plates, two square sleeves, pin shaft bolts , thin nuts, lock nuts, steps, when the groove adjustment plate moves up relative to the wear-resistant groove sleeve, the driving surface and the connecting surface slide relative to each other, that is, the driving surface drives the square sleeve to move towards the direction close to the guide arm, and the square sleeve drives The movement of the pin shaft bolt, and finally the pin shaft bolt drives the guide arm to move forward. On the contrary, when the groove adjustment plate moves down relative to the wear-resistant groove sleeve, the pin shaft bolt drives the guide arm to move backward, that is, through Change the relative position of the groove type adjustment plate relative to the height of the wear-resistant groove sleeve, so that the axle can be driven forward and backward by a small amount through the guide arm, so as to achieve the purpose of adjusting the wheelbase.

Description of drawings

Fig. 1 is the explosion diagram of drive mechanism of the present invention;

Fig. 2 is a schematic view of the structure of the stent body of the present invention;

Fig. 3 is the schematic diagram of pin shaft bolt structure of the present invention;

Fig. 4 is a structural schematic diagram of an existing guide arm assembly;

Fig. 5 is a schematic diagram of the structure of a square sleeve of the present invention;

Figure 6 is a perspective view of the present invention;

Fig. 7 is a perspective view of the present invention; (partial cutaway)

Figure 8 is an enlarged view of A in Figure 7;

Figure 9 is a front view of the present invention.

In the figure: 1. Pin shaft bolt; 2. Square sleeve; 3. Groove adjustment plate; 4. Wear-resistant groove sleeve; 5. Bracket body; 6. Thin nut; 7. Lock nut; 8. Step; 9. Square hole; 10, connecting surface; 11, driving surface; 12, inclined surface; 13, guiding surface; 14, guiding arm; 15, roll ear hole; 16, composite bushing;

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 4 , which is an existing guide arm assembly, including a guide arm 14 , and a roll ear hole 15 is arranged in the guide arm 14 , and a composite bushing 16 is fixed in the roll ear hole 15 .

Referring to Fig. 1 to Fig. 9, the present invention provides an air suspension bracket structure, including a bracket body 5 and a drive mechanism connected to the bracket body 5, the drive mechanism is used to drive the movement of the guide arm 14, and the drive mechanism includes an opposite arrangement Two wear-resistant groove sleeves 4, two groove-shaped adjustment plates 3, two square sleeves 2, pin shaft bolts 1, thin nuts 6, lock nuts 7, wear-resistant groove sleeves 4 are connected to both sides of the bracket body 5 , and the wear-resistant groove sleeve 4 is used to guide the groove adjustment plate 3, the square sleeve 2 is inserted into the groove adjustment plate 3, the wear-resistant groove sleeve 4, the pin shaft bolt 1 runs through the square sleeve 2, the groove adjustment plate 3, and the wear-resistant The grooved sleeve 4, the bracket body 5, and the square sleeve 2 are directly in contact with the pin shaft bolt 1, and are symmetrical, and the contact point a is a circumferential surface (see Figure 8), which is different from the previous contact between the groove type adjustment plate 3 and the pin shaft bolt 1 In the new structure, the contact surface between the square sleeve 2 and the pin bolt 1 is large and uniform, the contact strength is good, and it is not easy to wear, which avoids welding on the bracket body 5 after the wheelbase adjustment is completed in the old structure , because of the disadvantage that the groove adjustment plate 3 is damaged and difficult to replace. The thin nut 6 and the lock nut 7 are used for locking the pin shaft bolt 1, the pin shaft bolt 1 is connected with the guide arm 14, and the groove-shaped adjusting plate 3 is used to drive the square sleeve 2 to move.

Use the pin bolt 1 to pass through the square sleeve 2, groove adjustment plate 3, and wear-resistant groove sleeve 4 on one side of the bracket body 5 in sequence, and pass through the wear-resistant groove sleeve 4 and groove type on the other side of the bracket body 5 in sequence. Adjust the plate 3, the square sleeve 2, and finally tighten the thin nut 6 and the lock nut 7 in turn, so that the thin nut 6 is pressed tightly on the square sleeve 2. When the groove-shaped adjustment plate 3 moves up relative to the wear-resistant groove sleeve 4, the upward movement direction is Y in Figure 9, and the driving surface 11 and the connecting surface 10 slide relatively, that is, the driving surface 11 drives the square sleeve 2 to approach the guide arm 14 The square sleeve 2 drives the pin bolt 1 to move, and finally the pin bolt 1 drives the guide arm 14 to move forward, and the forward direction is X in Figure 9; on the contrary, when the groove adjustment plate 3 When moving down relative to the wear-resistant groove sleeve 4, the pin bolt 1 drives the guide arm 14 to move backward, that is, by changing the relative position of the groove-shaped adjustment plate 3 relative to the height of the wear-resistant groove sleeve 4, the axle shaft is driven by the guide arm 14. A small amount of forward and backward movement can achieve the purpose of adjusting the wheelbase, and the adjustment range of the general wheelbase is within ±7mm.

The driving mechanism also includes a step 8 fixed to one end of the pin bolt 1 , and the step 8 matches the square hole 9 provided on the square sleeve 2 . The pin bolt 1 cooperates with the square hole 9 of the square sleeve 2 through the step 8 to prevent the pin bolt 1 from rotating when the pin bolt 1 is pre-tightened, that is, when the thin nut 6 and the lock nut 7 are rotated, Prevent pin shaft bolt 1 from rotating, and square hole 9 plays guiding purpose to pin shaft bolt 1.

Both sides of the square sleeve 2 are provided with connecting surfaces 10 , which match with the driving surfaces 11 provided in the slot shape adjusting plate 3 .

Both sides of the slot-type adjusting plate 3 are provided with inclined surfaces 12 , and the inclined surfaces 12 match the guide surfaces 13 arranged in the wear-resistant groove sleeve 4 . The contact between the groove type adjustment plate 3 and the wear-resistant groove sleeve 4 is a surface contact, which is different from the line contact between the previous eccentric sleeve (circular) and the groove sleeve (or the square stop plate on the bracket body 5), the new In the structure, the contact strength between the groove adjustment plate 3 and the wear-resistant groove sleeve 4 is good, and it is not easy to wear.

The bracket body 5 is provided with an installation hole 18 , and the wear-resistant groove sleeve 4 is welded to the installation hole 18 to improve the stability of the connection between the wear-resistant groove sleeve 4 and the bracket body 5 .

The thin nut 6 and the lock nut 7 are threadedly connected with the pin bolt 1, and the rotation of the thin nut 6 and the lock nut 7 can make the step 8 of the pin bolt 1 move toward the direction close to the bracket body 5, that is, the square sleeve 2 is pressed against the Groove adjusting plate 3, and groove adjusting plate 3 is pressed on wear-resistant groove sleeve 4.

One end of the square sleeve 2 is provided with an anti-slip surface 17, and the anti-slip surface 17 is pressed on the end of the composite bush 16, which increases the friction coefficient of the steel sleeve in the square sleeve 2 and the composite bush 16, and makes the vibration reduction of the composite bush 16 The effect can be brought into full play.

The alloy steel material used in the square sleeve 2 has improved strength and wear resistance.

Working principle: The pin shaft bolt 1 passes through the square sleeve 2, the groove adjustment plate 3, and the wear-resistant groove sleeve 4 on one side of the bracket body 5 in sequence, and is adjusted from the wear-resistant groove sleeve 4 and the groove shape on the other side of the bracket body 5. Plate 3 and square cover 2 go out. Rotate the thin nut 6 and the lock nut 7, so that the thin nut 6 is pressed against the square sleeve 2 on the other side of the bracket body 5, that is, the step 8 is connected to the square hole 9, and the end of the square sleeve 2 passes through the groove adjustment plate 3 , The wear-resistant groove sleeve 4, the connecting surface 10 is connected with the driving surface 11, and the inclined surface 12 is connected with the guiding surface 13. Use a tool to move the groove adjustment plate 3 in the direction of Y, that is, move up, the driving surface 11 and the connecting surface 10 slide relatively, that is, the driving surface 11 drives the square sleeve 2 to move towards the direction close to the guide arm 14, and the square sleeve 2 drives the pin The movement of the shaft bolt 1, and finally the pin shaft bolt 1 drives the guide arm 14 to move forward, and the direction of the forward movement is X. When the groove adjustment plate 3 moves down, the guide arm 14 moves back for a certain distance, which can change the relative position of the groove adjustment plate 3 relative to the wear-resistant groove sleeve 4, so that the axle is driven by the guide arm 14 to move a small amount back and forth to achieve adjustment. The purpose of the wheelbase is flexible and convenient to operate.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. An air suspension bracket structure, characterized in that, comprises a bracket body (5) and a driving mechanism connected to the bracket body (5), the driving mechanism is used to drive the movement of the guide arm (14), and the driving mechanism It includes two wear-resistant grooved sleeves (4), two grooved adjustment plates (3), two square sleeves (2), pin bolts (1), thin nuts (6), lock nuts (7 ), the wear-resistant groove sleeve (4) is connected to both sides of the bracket body (5), and the wear-resistant groove sleeve (4) is used for the guide of the groove adjustment plate (3), and the square sleeve (2) is inserted into the groove Type adjustment plate (3), wear-resistant slot sleeve (4), the pin shaft bolt (1) runs through the square sleeve (2), slot type adjustment plate (3), wear-resistant slot sleeve (4), bracket body ( 5), the thin nut (6) and the lock nut (7) are used for locking the pin bolt (1), the pin bolt (1) is connected with the guide arm (14), and the grooved adjustment plate (3) is used for driving square cover (2) to move. 2. A kind of air suspension bracket structure according to claim 1, characterized in that, the driving mechanism further comprises a step (8), and the step (8) is fixed to one end of the pin bolt (1), and The step (8) matches the square hole (9) arranged on the square sleeve (2). 3. A kind of air suspension bracket structure according to claim 2, characterized in that, the two sides of the square sleeve (2) are provided with connecting surfaces (10), and the connecting surfaces (10) are arranged in the groove Match the driving surface (11) inside the type adjustment plate (3). 4. An air suspension bracket structure according to claim 3, characterized in that, inclined surfaces (12) are arranged on both sides of the groove-shaped adjustment plate (3), and the inclined surfaces (12) are arranged on the resistant The guide surface (13) in the grinding groove cover (4) matches. 5. A kind of air suspension bracket structure according to claim 1, characterized in that, the bracket body (5) is provided with a mounting hole (18), and the wear-resistant slot sleeve (4) is welded to the mounting hole ( 18). 6 . The air suspension bracket structure according to claim 1 , characterized in that, the thin nut ( 6 ) and the lock nut ( 7 ) are threadedly connected with the pin bolt ( 1 ). 7. The air suspension bracket structure according to claim 1, characterized in that, one end of the square sleeve (2) is provided with an anti-slip surface (17), and the anti-slip surface (17) is pressed against the composite bushing (16) end.

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