Integrated heavy truck rear axle air spring mounting base

Abstract

The utility model relates to an integrated heavy truck rear axle air spring mounting base, which comprises a body, the body includes a base plate and a piston connected above the base plate, the base plate extends radially outward to form a flange plate for matching the rear axle installation, a pipe is installed at the bottom of the flange plate, the pipe comprises a fixed part and a movable part movably connected at the bottom of the fixed part, and a driving assembly is arranged, which comprises a plug rod that can be inserted into the pipe, when the pipe is installed with the rear axle, the plug rod is inserted into the pipe and drives the movable part to turn outwards and lock, the utility model device simplifies the installation process through the pipe turn-out locking, after the pipe is inserted into the rear axle mounting hole, only the plug rod needs to be driven by the driving assembly to extend into the pipe, which can drive the movable part to turn outwards and lock, without the need to align and tighten the bolts one by one in the narrow rear axle space, a single person can complete the installation operation, which greatly reduces the labor cost and installation time.

Description

Technical Field

[0001] This utility model belongs to the technical field of air spring mounting bases, and specifically relates to an integrated heavy-duty truck rear axle air spring mounting base. Background Technology

[0002] The air spring mounting base for heavy-duty truck rear axle is a key component connecting the air spring and the rear axle, and its installation quality directly affects the stability and driving safety of the heavy-duty truck suspension system. However, as the core area for power transmission and load bearing, the rear axle of a heavy-duty truck has a complex structure and extremely limited installation space. The drive shaft, shock absorbers, stabilizer bars, and other components distributed around the rear axle significantly compress the installation and operation space of the mounting base. In addition, the air spring mounting base for heavy-duty trucks needs to bear large loads. Traditional installation techniques have long been plagued by problems such as "cumbersome installation process, high operation difficulty, and low efficiency," which seriously affects the efficiency of heavy-duty truck production assembly and subsequent maintenance. Utility Model Content

[0003] This utility model addresses the problems of existing technologies by providing an integrated heavy-duty truck rear axle air spring mounting base, the specific technical solution of which is as follows:

[0004] An integrated heavy-duty truck rear axle air spring mounting base includes:

[0005] The body includes a base plate and a piston connected above the base plate, the base plate extending radially outward to form a flange for mounting to a rear axle.

[0006] An insertion tube is installed at the bottom of a flange, and the insertion tube includes a fixed part and a movable part that is movably connected to the bottom of the fixed part;

[0007] And a drive assembly, the drive assembly including a plug that can be inserted into a cannula;

[0008] After the insertion tube is installed with the rear axle, the insertion rod extends into the insertion tube and drives the movable part to flip outward and lock the connection.

[0009] As a further technical solution of this utility model, the movable part is evenly arranged in multiple sets around the fixed part in the circumferential direction.

[0010] As a further technical solution of this utility model, the insertion tube is evenly arranged in multiple sets around the flange, the insertion rod is arranged correspondingly to the insertion tube, the piston is slidably provided with a drive ring, the multiple sets of insertion rods are connected through the drive ring, and the insertion rod can drive the multiple sets of insertion rods to move when it moves along the axial direction.

[0011] As a further technical solution of this utility model, a nut is screwed onto the piston, and the nut is rotatably connected to the drive ring. When the nut rotates, it can drive the drive ring to slide axially.

[0012] As a further technical solution of this utility model, in the installed state, the drive ring, together with the flange and piston, forms a protective cavity that covers the insertion rod.

[0013] As a further technical solution of this utility model, the bottom of the substrate has an outwardly protruding positioning boss.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) The device simplifies the installation process through a dual design of “positioning boss + tube flip-out locking”: the positioning boss at the bottom of the base plate can quickly fit into the pre-positioning structure of the rear axle, and the base and the rear axle can be accurately aligned without repeated adjustments; at the same time, after the tube is inserted into the mounting hole of the rear axle, the insertion rod can be driven to extend through the drive component to drive the movable part to flip out and lock, without having to align and tighten the bolts one by one in the narrow rear axle space, and a single person can complete the installation operation, which greatly reduces labor costs and installation time.

[0016] (2) The insertion tubes are evenly arranged around the flange circumference and are matched with the insertion rods that correspond one-to-one with the insertion tubes to achieve multi-point synchronous locking between the base and the rear axle; the movable part is evenly distributed around the fixed part and can fit in all directions against the inner wall of the rear axle mounting hole after being squeezed by the insertion rods, forming a dual fixing effect of "radial clamping + axial limiting", avoiding the force displacement caused by traditional single bolt fixing or unilateral locking; in addition, the nut outside the piston is driven by the thread transmission, and the self-locking property of the thread structure can resist the bumps and vibrations during heavy truck driving, prevent the drive components from loosening, and ensure the connection stability between the base and the rear axle during long-term use.

[0017] (3) The drive ring connects multiple sets of plug rods into one unit, which can drive all plug rods to move axially synchronously, avoiding the uneven locking degree caused by the traditional "single adjustment plug rod"; the nut is rotatably connected to the drive ring, and the rotational motion can be converted into the linear motion of the drive ring by rotating the nut. The operator can control the number of rotations of the nut to precisely adjust the insertion depth of the plug rod, ensuring that the moving part reaches the best locking state, which avoids damage to the moving part due to excessive compression, and also prevents locking failure due to insufficient insertion, thus reducing the installation error rate.

[0018] (4) In the installed state, the drive ring, together with the flange and piston, forms a closed protective cavity that completely covers the plug rod; it can effectively block the intrusion of dust, mud, stones and other impurities splashed on the road surface, and prevent the plug rod surface from being worn or the fitting gap from being blocked by impurities; at the same time, it can isolate rainwater erosion and prevent the plug rod from being rusted and causing the movement to become stuck. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of an integrated heavy-duty truck rear axle air spring mounting base is shown.

[0020] Figure 2 A schematic diagram of the structure of the body and the driving components is shown;

[0021] Figure 3 A schematic diagram of the cannula structure is shown.

[0022] Legend:

[0023] 100, Body; 110, Base plate; 111, Flange; 112, Positioning boss; 120, Piston; 200, Insertion tube; 210, Fixing part; 220, Moving part; 300, Drive assembly; 310, Drive ring; 320, Drive rod; 330, Nut; 340, Protective cavity. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0025] Figure 1 A schematic diagram of the overall structure of an integrated heavy-duty truck rear axle air spring mounting base is shown. Figure 2 A schematic diagram of the structure of the body 100 and the drive component 300 is shown; Figure 3 A schematic diagram of the cannula 200 is shown.

[0026] Figures 1-3 The integrated heavy-duty truck rear axle air spring mounting base includes:

[0027] The body 100 includes a base plate 110 and a piston 120 connected above the base plate 110. The base plate 110 extends radially outward to form a flange 111 for mounting to the rear axle.

[0028] Insertion tube 200 is installed at the bottom of flange 111. Insertion tube 200 includes a fixed part 210 and a movable part 220 that is movably connected to the bottom of the fixed part 210.

[0029] And a drive assembly 300, which includes a rod 320 movably disposed within the cannula 200;

[0030] After the insertion tube 200 is installed with the rear axle, the insertion rod 320 extends into the insertion tube 200 and drives the movable part 220 to flip outward and lock the connection.

[0031] The main body 100 is the core load-bearing and assembly foundation of the device. The base plate 110 bears the load transmission function between the air spring and the rear axle. The piston 120 above it directly cooperates with the air spring bladder to provide stable telescopic support for the air spring. The radially extending flange 111 of the base plate 110 increases the contact area with the rear axle to ensure uniform force transmission during installation. The insertion tube 200 serves as a "transition connector" between the base and the rear axle. The fixed part 210 is rigidly connected to the flange 111 to ensure structural stability, while the movable part 220 is reserved for locking. During installation, the insertion tube 200 is first inserted into the preset mounting hole of the rear axle. Then, the drive rod 320 of the drive assembly 300 extends axially along the insertion tube 200. The drive rod 320 will squeeze the inner wall of the movable part 220, forcing the movable part 220 to rotate outward around the fixed part 210 until the movable part 220 fits against the inner wall or end face of the rear axle mounting hole, forming a mechanical locking structure. This "tube insertion + drive outward tilting locking" design, compared to the traditional pure bolt fixing method, eliminates the need to repeatedly align bolt holes in the narrow rear axle space, greatly simplifying the installation process; at the same time, the locking structure after the movable part 220 tilts outward can form a dual fixing effect of "radial clamping + axial limiting", avoiding the base from loosening due to the bumps of heavy truck driving, and improving installation reliability.

[0032] Figure 3 In the middle, the movable part 220 is evenly arranged in multiple groups around the fixed part 210.

[0033] The movable parts 220 are evenly distributed around the fixed part 210, meaning that the distance from each group of movable parts 220 to the center of the fixed part 210 is equal and the interval angle is consistent. When the drive rod 320 extends into the insertion tube 200, its squeezing force on the inner wall of the insertion tube 200 is evenly transmitted to each group of movable parts 220, causing all movable parts 220 to flip outward synchronously, and the outward flipping angle and squeezing force on the rear axle mounting hole of each group of movable parts 220 are completely consistent. This evenly distributed design can avoid the force offset problem when locking with the traditional "single-sided movable part"; and multiple evenly distributed movable parts 220 can form an all-round locking support, so that the mating surface between the insertion tube 200 and the rear axle mounting hole is evenly stressed, further enhancing the locking stability, while reducing the damage to the insertion tube 200 caused by local stress concentration and extending its service life.

[0034] Figure 2 In the middle, the bottom of the substrate 110 has an outwardly protruding positioning boss 112.

[0035] The positioning boss 112 on the base plate 110 provides a "precise guiding reference" for the installation process: the corresponding installation position of the heavy truck rear axle will have a positioning groove or positioning hole that matches the positioning boss 112. During installation, simply embed the positioning boss 112 into the positioning structure of the rear axle to quickly align the base with the rear axle. There is no need to repeatedly adjust the circumferential angle or radial position of the base, which can ensure that the bolt holes of the flange 111 and the insertion pipe 200 are precisely aligned with the mounting holes of the rear axle, thus shortening the installation alignment time.

[0036] Figure 2 In the middle, multiple sets of insertion tubes 200 are evenly arranged around the flange 111. Insert rods 320 are arranged correspondingly to insertion tubes 200. A drive ring 310 is slidably arranged on the outside of the piston 120. Multiple sets of insertion rods 320 are connected through the drive ring 310. When the insertion rods 320 move along the axial direction, they can drive multiple sets of insertion rods 320 to move.

[0037] The one-to-one correspondence between the insertion tube 200 and the drive rod 320 ensures that each insertion tube 200 has an independent drive source. The even distribution of the insertion tubes 200 around the flange 111 further ensures balanced multi-point connection between the base and the rear axle, improving overall load-bearing capacity. The drive ring 310, acting as the "linkage hub" of multiple drive rods 320, can slide axially along the outer wall of the piston 120 and is rigidly connected to the top of each drive rod 320. When the drive ring 310 slides downwards, it simultaneously drives all drive rods 320 to extend axially along the insertion tube 200; when the drive ring 310 slides upwards, it simultaneously pulls the drive rods 320 outwards, achieving coordinated action of multiple drive rods. The synchronous drive of the drive ring 310 ensures that the insertion depth of all drive rods 320 is consistent, and the outward turning degree of each movable part 220 is the same, resulting in a uniform distribution of locking force between the base and the rear axle. This also significantly reduces operating steps and improves installation efficiency.

[0038] Figure 2 In the middle, the piston 120 is externally screwed with a nut 330, which is rotatably connected to the drive ring 310. When the nut 330 rotates, it can drive the drive ring 310 to slide axially.

[0039] The piston 120 has an external thread on its outer wall, and the nut 330 is screwed to the piston 120 through an internal thread. At the same time, the lower end of the nut 330 is rotatably connected to the drive ring 310 through a bearing or a rotating snap. This "screwed connection + rotating connection" structure converts the rotational motion of the nut 330 into the axial linear motion of the drive ring 310. When the nut 330 is rotated clockwise, the nut 330 moves downward along the external thread of the piston 120, and its lower end pushes the drive ring 310 to slide downward synchronously, thereby driving the drive rod 320 to extend into the insertion tube 200. When the nut 330 is rotated counterclockwise, the nut 330 moves upward, pulling the drive ring 310 and the drive rod 320 back to their original positions. The advantages of threaded drive lie in "precise adjustment + self-locking function": On the one hand, by controlling the number of rotations of the nut 330, the sliding distance of the drive ring 310 can be precisely controlled, thereby adjusting the insertion depth of the drive rod 320 to ensure that the moving part 220 reaches the optimal locking state and avoids damage to the moving part due to excessive compression; on the other hand, the threaded structure has natural self-locking properties, and the vibration generated during the operation of the heavy truck will not cause the nut 330 to rotate on its own, thereby ensuring the stability of the position of the drive ring 310 and the drive rod 320 and completely eliminating the risk of locking failure.

[0040] Figure 2 In the installed state, the drive ring 310, together with the flange 111 and the piston 120, forms a protective cavity 340 that covers the insert rod 320.

[0041] After installation, the drive ring 310 is in the downward sliding locked position, with its outer wall fitting against the upper surface of the flange 111 and its inner wall tightly fitting against the outer wall of the piston 120. Together, these three elements form a closed protective cavity 340, completely enclosing the multiple drive rods 320 within the cavity. The protective cavity 340 effectively prevents the intrusion of various impurities through physical isolation, keeping the surface of the drive rods 320 clean and ensuring unobstructed clearance. Simultaneously, the protective cavity 340 also reduces the corrosion of the drive rods by rainwater, preventing them from jamming due to rust.

[0042] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An integrated heavy-duty truck rear axle air spring mounting base, characterized in that, include: The body (100) includes a base plate (110) and a piston (120) connected above the base plate (110), the base plate (110) extending radially outward to form a flange (111) for mounting to a rear axle. Insertion tube (200), which is installed at the bottom of flange (111), the insertion tube (200) includes a fixed part (210) and a movable part (220) movably connected to the bottom of the fixed part (210); And a drive assembly (300) including a probe (320) that can be inserted into the cannula (200); After the cannula (200) is installed with the rear axle, the insertion rod (320) extends into the cannula (200) and drives the movable part (220) to flip outward and lock the connection.

2. The integrated heavy-duty truck rear axle air spring mounting base according to claim 1, characterized in that: The movable part (220) is evenly arranged in multiple sets around the fixed part (210).

3. The integrated heavy-duty truck rear axle air spring mounting base according to claim 2, characterized in that: Multiple sets of insertion tubes (200) are evenly arranged around the flange (111) in a circumferential direction. The insertion rods (320) are arranged correspondingly to the insertion tubes (200). A drive ring (310) is slidably arranged on the outside of the piston (120). Multiple sets of insertion rods (320) are connected through the drive ring (310). When the insertion rods (320) move along the axial direction, they can drive multiple sets of insertion rods (320) to move.

4. The integrated heavy-duty truck rear axle air spring mounting base according to claim 3, characterized in that: The piston (120) is externally screwed with a nut (330), which is rotatably connected to the drive ring (310). When the nut (330) rotates, it can drive the drive ring (310) to slide axially.

5. An integrated heavy-duty truck rear axle air spring mounting base according to claim 3, characterized in that: In the installed state, the drive ring (310) together with the flange (111) and piston (120) form a protective cavity (340) that covers the insert rod (320).

6. An integrated heavy-duty truck rear axle air spring mounting base according to claim 3, characterized in that: The substrate (110) has a protruding positioning boss (112) at its bottom.

Images