Commercial vehicle air suspension

Abstract

The present invention relates to the technical field of air suspension, in particular to an air suspension for commercial vehicles, comprising a guide arm and a hydraulic cylinder, both ends of the guide arm being installed with air springs and pneumatic shock absorbers by screws, one side of the guide arm being provided with a concave support member, the concave support member and the pneumatic shock absorber being connected by a movable mechanism, connecting members being welded between the two ends of the concave support member and one end of the guide arm, and the concave support member and the guide arm being connected by an adjustment mechanism. The present invention provides an adjustment mechanism for adjusting according to the position of the hydraulic cylinder installed on the air suspension, thereby avoiding the position of the hydraulic cylinder installed on the air suspension from being tilted, improving the stability of the hydraulic cylinder installed on the air suspension, and relative to the buffering effect of the hydraulic cylinder with position displacement on the vehicle, the hydraulic cylinder of the present invention avoids position displacement during installation, thereby improving the buffering effect of the hydraulic cylinder on the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of air suspensions, and in particular to an air suspension dedicated to commercial vehicles. Background Art

[0002] After commercial vehicles are equipped with dedicated air suspensions, the riding and driving comfort of the commercial vehicles is further improved. In the existing air suspension, in order to further increase the shock absorption effect of the vehicle, a hydraulic cylinder is installed on the air suspension. The existing hydraulic cylinder is directly connected to the air suspension through screws. However, in the prior art, due to the non-corresponding positions between the components in the air suspension, the hydraulic cylinder needs to be properly adjusted according to the positions of the components during installation, which causes the position of the hydraulic cylinder to be offset, which easily reduces the buffering effect of the hydraulic cylinder on the vehicle. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an air suspension specifically for commercial vehicles.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a special air suspension for commercial vehicles, including a guide arm and a hydraulic cylinder, both ends of the guide arm are installed with air springs and pneumatic shock absorbers by screws, one side of the guide arm is provided with a concave support, the concave support and the pneumatic shock absorber are connected by a movable mechanism, connecting parts are welded between the two ends of the concave support and one end of the guide arm, the concave support and the guide arm are connected by an adjustment mechanism, the adjustment mechanism includes two first solenoids, the two first solenoids are respectively installed on the sides of the concave support and the guide arm by screws, one end of the two first solenoids is threadedly inserted with a second screw, one end of the two second screws is installed with a baffle by screws, the surfaces of the two second screws are threadedly sleeved with a second solenoid, the two second solenoids are connected by a positioning mechanism, the surfaces of the two second screws are movably sleeved with a circular ring, the two ends of the circular ring are respectively in contact with the side of the baffle and the end of the second solenoid, and the two ends of the hydraulic cylinder are connected to the two circular rings by a rotating mechanism.

[0005] Preferably, the rotating mechanism includes a concave part, the surface of the concave part is mounted on the outside of the circular ring part by screws, a fixed shaft is welded between the two ends of the concave part, a movable block is movably sleeved on the surface of the fixed shaft, and one end of the movable block is mounted on one end of the hydraulic cylinder by screws.

[0006] Preferably, the positioning mechanism includes a slide groove opened on the surface of the two second spiral tubes, two first screws are placed between the inside of the two slide grooves, the two first screws are symmetrically arranged, and a long strip is movably provided between the two ends of the two first screws. The side surfaces of the two long strips are respectively in contact with the surfaces of the two second spiral tubes, and the two ends of the two first screws are threadedly provided with fastening nuts, and the ends of the four fastening nuts are respectively in contact with the other side surfaces of the two long strips.

[0007] Preferably, the movable mechanism includes two mounting hooks, one ends of which are symmetrically arranged on both sides of the concave support, a pin shaft is installed between the two mounting hooks and the concave support, and the hook ends of the two mounting hooks are in contact with the bottom of the pneumatic shock absorber.

[0008] Preferably, the distance between the two long strips is greater than the maximum length of the hydraulic cylinder.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The present invention provides an adjustment mechanism for adjusting according to the position where the hydraulic cylinder is installed on the air suspension, thereby avoiding the position where the hydraulic cylinder is installed from being tilted on the air suspension, thereby improving the stability of the hydraulic cylinder installed on the air suspension. Compared with the buffering effect of a hydraulic cylinder with a position offset on a vehicle, the hydraulic cylinder of the present invention avoids position offset during installation, thereby improving the buffering effect of the hydraulic cylinder on the vehicle.

[0011] The present invention sets a positioning mechanism to limit the second screw tube. When a single second screw tube is subjected to force, it cannot rotate, and the two second screw tubes need to be rotated at the same time, so that the two second screw tubes rotate on the surface threads of the two second screw rods, thereby preventing the hydraulic cylinder from being offset and facilitating the operation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric view of the commercial vehicle-specific air suspension of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of the regulating mechanism of the commercial vehicle-specific air suspension of the present invention;

[0014] Figure 3 It is a schematic diagram of the structure of the rotating mechanism of the commercial vehicle-specific air suspension of the present invention;

[0015] Figure 4 It is a schematic diagram of the positioning mechanism and two connection structures of the commercial vehicle-specific air suspension of the present invention.

[0016] In the figure: air spring 1, guide arm 2, pneumatic shock absorber 3, first solenoid 4, connecting part 5, first screw 6, concave support part 7, long strip plate 8, circular ring part 9, baffle 10, pin 11, mounting hook 12, hydraulic cylinder 13, fastening nut 14, slide 15, movable block 16, concave part 17, second screw 18, second solenoid 19, fixed shaft 20. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] like Figure 1-4 The commercial vehicle-specific air suspension shown in the figure includes a guide arm 2 and a hydraulic cylinder 13. Air springs 1 and pneumatic shock absorbers 3 are installed at both ends of the guide arm 2 by screws. A concave support 7 is provided on one side of the guide arm 2. The concave support 7 and the pneumatic shock absorber 3 are connected by a movable mechanism. A connecting member 5 is welded between the two ends of the concave support 7 and one end of the guide arm 2. The movable mechanism includes two mounting hooks 12. One end of the two mounting hooks 12 is symmetrically arranged on both sides of the concave support 7. A pin 11 is installed between the two mounting hooks 12 and the concave support 7. The hook ends of the two mounting hooks 12 are in contact with the bottom of the pneumatic shock absorber 3. The mounting hook 12 moves synchronously with the vehicle. Therefore, when the vehicle vibrates, the mounting hook 12 exerts the same action on the pneumatic shock absorber 3. The pneumatic shock absorber 3 exerts a force on the mounting hook 12. The buffering force provided by the pneumatic shock absorber 3 can reduce the vibration of the vehicle, thereby improving the stability of the vehicle during the forming process.

[0019] The concave support member 7 and the guide arm 2 are connected by an adjustment mechanism, which includes two first solenoids 4, which are respectively installed on the sides of the concave support member 7 and the guide arm 2 by screws, one end of the two first solenoids 4 is threadedly inserted with a second screw 18, one end of the two second screws 18 is screwed with a baffle 10, and the surfaces of the two second screws 18 are threadedly sleeved with second solenoids 19. When adjusting the position of the hydraulic cylinder 13, the two solenoids 19 are first rotated, and the two solenoids 19 are respectively threadedly rotated on the surfaces of the two second screws 18, and at the same time, a force is applied to the two circular rings 9, so that The two circular ring members 9 slide on the surfaces of the two second screw rods 18. After the position adjustment of the hydraulic cylinder 13 is completed, the force applied to the two circular ring members 9 and the two second solenoids 19 can be stopped. At this time, only the two baffles 10 need to be rotated. The two baffles 10 drive the two second screw rods 18 to rotate in the two first solenoids 4. As the two second screw rods 18 move into the two first solenoids 4, the two baffles 10 push the two circular ring members 9. After one end of the two circular ring members 9 contacts one end of the second solenoid 19, the force applied to the two baffles 10 can be stopped to clamp and fix the position of the circular ring members 9.

[0020] The two second solenoids 19 are connected by a positioning mechanism. The surfaces of the two second screws 18 are movably sleeved with a circular ring 9. The two ends of the circular ring 9 are respectively in contact with the side of the baffle 10 and the end of the second solenoid 19. The positioning mechanism includes a slide groove 15 opened on the surface of the two second solenoids 19. Two first screws 6 are placed between the two slide grooves 15. The two first screws 6 are symmetrically arranged. A long strip 8 is movably sleeved between the two ends of the two first screws 6. The sides of the two long strips 8 are respectively in contact with the surfaces of the two second solenoids 19. Both ends of the first screw rod 6 are threadedly sleeved with fastening nuts 14, and the ends of the four fastening nuts 14 are respectively in contact with the other side of the two long plates 8, and the side surfaces of the two first screw rods 6 are in contact with the side surfaces of the slide groove 15, which are used to limit the two second screw tubes 19. Therefore, a single second screw tube 19 cannot rotate, so that the two second screw tubes 19 need to be rotated at the same time. Therefore, the two second screw tubes 19 are synchronously threadedly rotated on the surfaces of the two second screw rods 18 to prevent the position of the hydraulic cylinder 13 from shifting and to facilitate the operation of the staff.

[0021] The two ends of the hydraulic cylinder 13 are connected to the two circular rings 9 through a rotating mechanism. The rotating mechanism includes a concave part 17, the surface of the concave part 17 is installed on the outside of the circular ring part 9 by screws, a fixed shaft 20 is welded between the two ends of the concave part 17, and a movable block 16 is movably sleeved on the surface of the fixed shaft 20, and one end of the movable block 16 is installed at one end of the hydraulic cylinder 13 by screws. It is used to flexibly connect the hydraulic cylinder 13 and the air suspension, reduce the wear caused by the rigid connection, and play a protective role for the hydraulic cylinder 13. The distance between the two long plates 8 is greater than the maximum length of the hydraulic cylinder 13. When the two long plates 8 are installed on the two first screws 6 of the shaft, the distance between the two long plates 8 needs to be greater than the maximum length of the hydraulic cylinder 13 so that the hydraulic cylinder 13 can have enough stroke for extension and retraction.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A commercial vehicle air suspension, comprising a guide arm (2) and a hydraulic cylinder (13), wherein both ends of the guide arm (2) are provided with an air spring (1) and a pneumatic shock absorber (3) by means of screws, a concave support member (7) is provided on one side of the guide arm (2), the concave support member (7) and the pneumatic shock absorber (3) are connected by means of a movable mechanism, and connecting members (5) are welded between both ends of the concave support member (7) and one end of the guide arm (2), wherein: The concave support member (7) and the guide arm (2) are connected via an adjustment mechanism, wherein the adjustment mechanism comprises two first solenoids (4), the two first solenoids (4) being respectively mounted on the sides of the concave support member (7) and the guide arm (2) via screws, one end of the two first solenoids (4) being threadedly plugged with a second screw (18), one end of the two second screws (18) being respectively mounted with a baffle (10) via screws, the surfaces of the two second screws (18) being threadedly sleeved with a second solenoid (19), the two second solenoids (19) being connected via a positioning mechanism, the surfaces of the two second screws (18) being movably sleeved with a circular ring (9), the two ends of the circular ring (9) being respectively in contact with the side of the baffle (10) and the end of the second solenoid (19), and the two ends of the hydraulic cylinder (13) being connected to the two circular rings (9) via a rotating mechanism; The positioning mechanism comprises a slide groove (15) provided on the surface of two second screw tubes (19), two first screw rods (6) are placed between the two slide grooves (15), the two first screw rods (6) are symmetrically arranged, a long strip plate (8) is movably sleeved between the two ends of the two first screw rods (6), the side surfaces of the two long strip plates (8) are respectively in contact with the surfaces of the two second screw tubes (19), and fastening nuts (14) are threadedly sleeved on the two ends of the two first screw rods (6), and the ends of the four fastening nuts (14) are respectively in contact with the other side surfaces of the two long strip plates (8).

2. The commercial vehicle-specific air suspension according to claim 1, characterized in that: The rotating mechanism comprises a concave member (17), the surface of the concave member (17) being mounted on the outside of the circular ring member (9) by means of screws, a fixed shaft (20) being welded between the two ends of the concave member (17), a movable block (16) being movably sleeved on the surface of the fixed shaft (20), and one end of the movable block (16) being mounted on one end of the hydraulic cylinder (13) by means of screws.

3. The commercial vehicle-specific air suspension according to claim 1, characterized in that: The movable mechanism comprises two mounting hooks (12), one end of the two mounting hooks (12) being symmetrically arranged on both sides of the concave support (7), a pin shaft (11) being installed through the two mounting hooks (12) and the concave support (7), and the hook ends of the two mounting hooks (12) being in contact with the bottom of the pneumatic shock absorber (3).

4. The commercial vehicle-specific air suspension according to claim 1, characterized in that: The distance between the two long strips (8) is greater than the maximum length of the hydraulic cylinder (13).

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