CN210000048U

CN210000048U - air suspension system for semitrailer

Info

Publication number: CN210000048U
Application number: CN201920893893.5U
Authority: CN
Inventors: 王洪京; 董芳芳; 李泓; 赵祥
Original assignee: Beijing Chichuangda Air Suspension Co Ltd
Current assignee: Beijing Chichuangda Air Suspension Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-01-31
Anticipated expiration: 2029-06-13

Abstract

The utility model relates to a vehicle suspension technical field discloses air suspension systems for semitrailer, and it includes fore-stock, leading arm, fixedly connected with axle on the leading arm, the leading arm front end passes through the connecting piece and connects on the fore-stock, the slot hole has been seted up to the symmetry on the left and right both sides board of fore-stock, and the mounting hole has still been seted up in running through the leading arm, and the connecting piece includes the round pin axle that passes slot hole and mounting hole setting, and the epaxial wheel base adjustment mechanism that still is equipped with of round pin, wheel base adjustment mechanism include the regulating part, is equipped with bolt, connecting block on the regulating part, and the nut end of bolt is fixed on the connecting block, still is equipped with the trompil on the connecting block, the round pin axle runs through the trompil setting is fixed with the stopper on the fore-stock, bolt end passes the stopper and installs the second nut in stopper side.

Description

air suspension system for semitrailer

Technical Field

The utility model belongs to the technical field of vehicle suspension device, especially, relate to air suspension systems for semitrailer.

Background

The automobile suspension system is a general name of tangential force transmission connecting devices between a frame and an axle or a wheel, and has the functions of transmitting force and torque acting between the wheel and the frame, buffering impact force transmitted to the frame or an automobile body from an uneven road surface, and attenuating vibration caused by the impact force to ensure that the automobile can smoothly run.

In addition, the production and the configuration of the automobile require that the distances among the axles of the automobile must be kept equal and parallel; however, in the driving process of the automobile, bumping, vibration and abrasion of wheel tires often exist, so that the parallelism between the shafts is changed, irregular abrasion and accelerated abrasion of the wheels are caused, and finally, the driving resistance of the automobile is increased, and the driving safety of the automobile is influenced. The mechanism that relates to in the prior art and adjust each axletree wheel base often has the structure complicacy, adjusts the degree of difficulty greatly, overall stability subalternation problem.

Therefore, it is very important to design automobile suspension systems that can easily adjust the wheel base of the axle and have good structural stability, high overall safety performance and better comfort.

SUMMERY OF THE UTILITY MODEL

Big in order to solve among the prior art the axletree wheel base of car and adjust the degree of difficulty, the problem of complicated and poor stability of structure, the utility model provides a kinds of axletree wheel bases adjust more convenient air suspension system for semitrailer.

In order to achieve the purpose, the utility model provides a air suspension system for semitrailer includes fore-stock, guiding arm, fixedly connected with axle on the guiding arm, the guiding arm front end passes through the connecting piece to be connected on the fore-stock, the slot hole has been seted up on the left and right both sides board of fore-stock symmetry, the mounting hole has still been seted up in the run-through guiding arm, the connecting piece includes the round pin axle that passes slot hole and mounting hole setting, the epaxial wheel base adjustment mechanism that still is equipped with of round pin, wheel base adjustment mechanism includes the adjusting part, be equipped with bolt and connecting block on the adjusting part, the nut end of bolt is fixed on the connecting block, still be equipped with the trompil on the connecting block, the round pin axle runs through the trompil setting, be fixed with the stopper on the fore-stock, bolt end passes the stopper and installs the second.

, the left and right sides of the side plate of the front bracket are respectively provided with an adjusting block and a gasket, the gasket is in contact with the guide arm, and the end of the pin shaft, which is far away from the pin shaft nut , is fastened through a nut.

, the regulating block comprises a circular ring-shaped bulge, and the outer size of the bulge is matched with the size of the long hole.

, a height valve and an air spring are further arranged, the height valve comprises an adjusting cross rod, an adjusting pull rod is arranged at the free end of the adjusting cross rod, the bottom end of the adjusting pull rod is fixed on the axle, and the adjusting pull rod drives the adjusting cross rod to rotate through a transition mechanism so as to adjust air pressure to enter and exit the air spring, so that the height of the air spring is changed.

step, there are frames fixed above the two front supports, cross frame fixed between the two frames, height valve fixed on the cross frame at the front end, and two sets of air springs fixed on the support at the rear end of the guide arm.

, a shock absorber is also provided between the front bracket and the guide arm.

, the guide arm is connected with the axle through a U-shaped bolt.

, the connecting block is U-shaped, and the nut end of the bolt is welded at the U-shaped opening of the connecting block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the pin shaft penetrates through the mounting hole of the guide arm and the long hole of the front support, relative fixation is formed between the pin shaft and the guide arm, the pin shaft moves in the long hole and simultaneously drives the guide arm to synchronously move, and therefore the axle can move forwards or backwards, and the purpose of adjusting the axle distance is achieved. In addition, for the wheel base adjusting mechanism, the nut of the bolt is fixed on the connecting block, the second nut is only required to be adjusted to rotate when the wheel base is adjusted, the bolt pulls the pin shaft through the connecting block to move, the structure is simple, the wheel base adjusting operation is convenient, and the overall stability is good.

2. The adjusting block is arranged, the circular-ring-shaped bulge of the adjusting block is clamped into the long hole, accordingly, -aspect displacement in the single direction between the pin shaft and the long hole of the front support can be better achieved, longitudinal displacement of the guide arm during axle distance adjustment is avoided, and stability and accuracy of axle distance adjustment are further guaranteed, -aspect protection of -degree protection of the adjusting block on the long hole of the front support can be achieved, collision damage of the adjusting block is avoided, additionally arranged gaskets can increase the contact area of the bolt and the guide arm, damage to the mounting hole of the guide arm is prevented easily, -step strengthening of stability between the bolt and the guide arm can be achieved, and stability of the bolt driving the guide arm to move is better.

3. The air spring is matched with the height valve, the height of a vehicle body is basically kept unchanged when the load of the vehicle is changed, and the deviation frequency change is smaller, so that the comfort of the vehicle under no load is ensured.

4. By arranging the shock absorber, the comfort of the vehicle and the stability of the whole structure can be improved; and set up the U type bolt and be connected the guiding arm with the axle, its installation is convenient and structural stability is good.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic side view of the structure of FIG. 1;

FIG. 3 is an exploded view of the connection between the fore carriage and the guide arm of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 2;

1-front support, 2-frame, 3-cross frame, 4-guide arm, 5-air spring, 6-axle, 7-shock absorber, 8-height valve, 9-connecting piece, 10-wheel base adjusting mechanism, 11-long hole, 41-mounting hole, 81-adjusting cross rod, 82-transition mechanism, 83-adjusting pull rod, 91-pin shaft, 92- th nut, 93-adjusting block, 94-washer, 101-adjusting piece, 102-limiting block, 103-second nut, 1011-bolt and 1012-connecting block.

Detailed Description

To further clarify the objects, features and advantages of embodiments of the present invention, a more complete description of embodiments of the present invention is now provided by reference to the drawings which form a part hereof, and it is to be understood that there is described herein a partial embodiment of rather than a complete embodiment thereof.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once a item is defined in figures, it need not be further defined and explained by in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is conventionally placed when the utility model is used, or the orientation or positional relationship which is conventionally understood by those skilled in the art, or the orientation or positional relationship which is conventionally placed when the utility model is used, is only for the convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as limiting the utility model, furthermore, the terms "", "second" are only used for distinguishing description, and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" are to be construed as being , e.g., fixed or removable or physically connected, directly connected, or indirectly connected through an intermediate medium.

The invention is further illustrated in below with reference to the following figures and specific examples.

As shown in figures 1-4, the utility model discloses an kind of air suspension system for semitrailer, it includes front truck 1 and guiding arm 4 that the left and right sides all set up, transversely fixedly connected with axle 6 on guiding arm 4, specifically, axle 6 passes through U type bolted connection on guiding arm 4, the front end of guiding arm 4 is connected on front truck 1 through connecting piece 9, slotted hole 11 has been seted up on the left and right both sides board of front truck 1 symmetrically, it has still seted up mounting hole 41 to run through guiding arm 4, slotted hole 11 and mounting hole 41 all set up on the same straight line, connecting piece 9 includes the round pin axle 91 that passes slotted hole 11 and mounting hole 41 setting, be equipped with the space that round pin axle 91 removed along constant direction in the slotted hole 11, round pin 91 drives guiding arm 4 to take place synchronous removal in the in-process that the slotted hole moves in slot 11, still be equipped with wheelbase adjustment mechanism 10 on round pin 91, wheelbase adjustment mechanism 10 includes adjusting part 101, be equipped with bolt 1011 and connecting block 1012 on adjusting part 101, connecting block 1012 is U type, connecting block end is provided with the sealed, the round pin 91 is set up, the holistic open-up on the second nut 102, it is favorable to the convenient for adjusting nut 102, it is fixed on the second support 102, it is equipped with the convenient for the stopper 102, it is convenient for adjusting nut 102, it is convenient to pass through the second bolt 102, it is equipped with the stopper 102, it is convenient to adjust the stopper 102, it is convenient to be convenient for the second bolt 102, it is equipped with the regulation mechanism 102, it is convenient.

In order to improve the overall structure, the left side and the right side of the side plate of the front bracket 1 are respectively provided with an adjusting block 93 and a washer 94, the washer 94 is arranged in contact with the guide arm 4, the end of the pin shaft 91, which is far away from the nut of the pin shaft 91, is fastened through a -th nut 92, in addition, the pin shaft 91 is in straight lines in order to facilitate adjustment, the adjusting block 93 comprises a circular ring-shaped bulge, the outer size of the bulge is matched with the size of the long hole 11, so that the circular ring-shaped bulge can be clamped into the long hole 11 when the adjusting block 93 is installed, and the possibility that the pin shaft 91 slides randomly in multiple directions does not exist.

In order to ensure the comfort and safety of the vehicle, the air spring 8 and the air spring 5 are further provided, the air of the air spring 5 is sent into the air spring 5 from the high pressure air in the air storage cylinder through the dryer and then from the air pipe to the air valve 8, the air spring 8 comprises an adjusting cross rod 81, the free end of the adjusting cross rod 81 is provided with an adjusting pull rod 83, the bottom end of the adjusting pull rod 83 is fixed on the axle 6, the adjusting pull rod 83 drives the adjusting cross rod 81 to rotate through a transition mechanism 82 so as to adjust the air pressure to enter and exit the air spring 5, so that the height of the air spring 5 is changed, when the axle 6 jumps, the adjusting cross rod 81 is driven by the adjusting pull rod 83 to rotate so as to achieve the effect of adjusting the high pressure air to enter and exit the air spring 5, wherein the air spring 5 is provided to ensure that the wheels on both sides are uniformly stressed, so that the tires and the ground are kept in pure rolling contact as much as possible, the braking force on both sides is balanced, the braking distance is shortened, the rearview mirror image is clearer and more stable, the driving comfort is more comfortable and the spirit.

In order to enable the installation stability of the height valve 8 and the air springs 5 to be higher, steps are carried out, a frame 2 is further fixed above two front supports 1, the frame 2 is arranged above a guide arm 4 and is the same in the length direction of the guide arm 4, a cross frame 3 is connected and erected at the front end and the rear end between the two frames 2 respectively, the height valve 8 is fixed on the cross frame 3 at the front end, and two groups of air springs 5 are fixed on a support at the rear end of the guide arm 4 respectively.

In order to improve the comfort of the vehicle and the stability of the overall structure, a shock absorber 7 is further arranged between the front bracket 1 and the guide arm 4 in step .

In order to enlarge the adjustment range of the wheel base, the limiting blocks 102 are arranged into two halves, and the second nut 103 is arranged between the left limiting block 102 and the right limiting block 102. Thus, in the adjusting process, when the second nut 103 contacts with the limiting block 102 of the right lobe, the limiting block 102 of the right lobe acts and enables the axle 6 to move forwards; when the second nut 103 comes into contact with the stopper 102 of the left lobe, the stopper 102 of the left lobe acts and moves the axle 6 backward.

The utility model discloses specific operation process does: the air spring 5 is inflated first, the position of the adjusting cross rod 81 of the height valve 8 is adjusted, and after the height of the suspension reaches the designed height, the adjusting cross rod 81 and the adjusting pull rod 83 are fixed well through the transition mechanism 82. Then, the wheel base is continuously adjusted, and the second nut 103 is adjusted in the positive direction or the negative direction, so that the adjusting piece 101 drives the guide arm 4 to displace through the pin shaft 91, and thus the wheel base is adjusted.

For the utility model discloses kinds of setting conditions that are used for the air suspension system of semitrailer can adopt following embodiment form:

example 1

an air suspension system for a semitrailer includes a front bracket and a guide arm both disposed on the left and right sides, an axle is transversely and fixedly connected to the guide arm, the axle is connected to the guide arm through a U-shaped bolt, the front end of the guide arm is connected to the front bracket through a connecting piece, long holes are symmetrically disposed on the left and right side plates of the front bracket, mounting holes are further disposed through the guide arm, the long holes and the mounting holes are both disposed on the same line, the connecting piece includes a pin shaft disposed through the long holes and the mounting holes, a space for the pin shaft to move in the direction is disposed in the long holes, the pin shaft drives the guide arm to move synchronously in the moving process of the pin shaft in the long holes, a shaft distance adjusting mechanism is further disposed on the pin shaft, the shaft distance adjusting mechanism includes an adjusting piece, a bolt and a connecting block are disposed on the adjusting piece, the connecting block is U-shaped, an opening is disposed on the closed end of the connecting block, the pin shaft is disposed through the opening, the nut end of the bolt is fixed to the opening end of the connecting block, a limit block is fixed in a welded manner that a limit piece is disposed on the left and a second nut is disposed between the and a.

Example 2

On the basis of embodiment 1, the left side and the right side of the side plate of the front support are respectively provided with an adjusting block and a gasket, the gasket is in contact with the guide arm, the end, away from the pin shaft nut , of the pin shaft is fastened through a -th nut, and in addition, the adjusting block is located on straight lines for facilitating adjustment of the pin shaft, and comprises an annular bulge, and the outer size of the bulge is matched with the size of the long hole.

Example 3

On the basis of the embodiment, the air spring is further provided with a height valve and an air spring, air of the air spring is conveyed into the air spring from high-pressure air in the air storage cylinder through the dryer and then through the air pipe to the height valve, the height valve comprises an adjusting cross rod, the free end of the adjusting cross rod is provided with an adjusting pull rod, the bottom end of the adjusting pull rod is fixed on an axle, and the adjusting pull rod drives the adjusting cross rod to rotate through a transition mechanism so as to adjust air pressure to enter and exit the air spring, so that the height of the air spring is changed. When the axle is in the process of jumping, the adjusting pull rod drives the adjusting cross rod to rotate, and the effect of adjusting high-pressure gas to enter and exit the air spring is achieved.

Example 4

On the basis of the embodiment, the vehicle frames are fixed above the two front supports, the vehicle frames are arranged above the guide arms and are the same in the length direction of the guide arms, cross frames are respectively connected and erected at the front end and the rear end between the two vehicle frames, and the height valve is fixed on the cross frame at the front end; and the two groups of air springs are respectively fixed on a support at the rear end of the guide arm.

Example 5

On the basis of the above embodiment, a shock absorber is further arranged between the front bracket and the guide arm.

Those skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and all such changes or substitutions are intended to be included within the scope of the present disclosure. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

The air suspension system for the semitrailer comprises a front support (1) and a guide arm (4), wherein an axle (6) is fixedly connected to the guide arm (4), and the air suspension system is characterized in that the front end of the guide arm (4) is connected to the front support (1) through a connecting piece (9), long holes (11) are symmetrically formed in the left side plate and the right side plate of the front support (1), a mounting hole (41) is formed in the front side plate and the guide arm (4) in a penetrating mode, the connecting piece (9) comprises a pin shaft (91) penetrating through the long holes (11) and the mounting hole (41), a shaft distance adjusting mechanism (10) is further arranged on the pin shaft (91), the shaft distance adjusting mechanism (10) comprises an adjusting piece (101), a bolt (1011) and a connecting block (1012) are arranged on the adjusting piece (101), the nut end of the bolt (1011) is fixed to the connecting block (1012), an opening is formed in the connecting block (1012), the pin shaft (91) penetrates through the opening, a limiting block (102) is fixed to the front support (1), and a second nut (103) is arranged on the side () side of the.
2. air suspension system for semitrailer according to claim 1 characterized in that, the left and right sides of the side plate of the front bracket (1) are respectively provided with an adjusting block (93) and a washer (94), the washer (94) is arranged in contact with the guide arm (4), and the end of the pin shaft (91) far away from the pin shaft (91) and the nut is fastened by a nut (92).
3. air suspension system for semitrailers according to claim 2, characterized in that the adjusting block (93) comprises an annular projection whose outer dimension is adapted to the dimension of the elongated hole (11).
4. air suspension system for semitrailer according to claim 1, characterized in that, there are height valve (8) and air spring (5), height valve (8) includes adjusting crossbar (81), the free end of adjusting crossbar (81) is equipped with adjusting pull rod (83), the bottom end of adjusting pull rod (83) is fixed on axle (6), adjusting pull rod (83) drives adjusting crossbar (81) to rotate through transition mechanism (82) to adjust the air pressure to get in and out air spring (5) and thus change the height of air spring (5).
5. air suspension system for semitrailer according to claim 4 characterized in that, the frame (2) is fixed above the two front brackets (1), the cross frame (3) is fixed between the two frames (2), the height valve (8) is fixed on the cross frame (3) at the front end, and the two sets of air springs (5) are respectively fixed on the support at the rear end of the guide arm (4).
6. The air suspension system for semitrailers according to any one of claims 1 to 5 or , wherein a shock absorber (7) is further disposed between the front bracket (1) and the guide arm (4).
7. air suspension system for semitrailers according to claim 6, characterized in that the guide arm (4) is connected to the axle (6) by means of a U-bolt.
8. air suspension system for semitrailers according to claim 1, characterized in that the stoppers (102) are provided with two lobes and the second nut (103) is provided between the left and right stoppers (102).
9. air suspension system for semitrailer according to claim 1 characterized in that, the connecting block (1012) is U-shaped, the nut end of the bolt (1011) is welded at the U-shaped opening of the connecting block (1012).