Air spring for truck shock absorber

Abstract

The utility model discloses a kind of air springs for truck shock absorber, including air spring body, the top and bottom of air spring body are respectively fixedly connected with first mounting plate and second mounting plate.The utility model is by being arranged between first mounting plate and second mounting plate buffer assembly, utilize the mechanical buffering effect of buffer spring and the gas buffering effect of air bag are combined, form double buffering structure.When truck travels and meets bump, first mounting plate and second mounting plate relative motion, through connecting rod sliding block is driven on slide column and compresses buffer spring, while movable rod drives movable plate extrusion air bag, air bag internal gas compression absorbs vibration energy, double buffering structure effectively disperses and absorbs vibration load in vehicle travel, improve the impact resistance of air spring body, avoid damage due to excessive load, significantly prolong the service life of air spring body, guarantee vehicle travel safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring technical field, concretely is a kind of air spring for truck shock absorber. BACKGROUND

[0002] Air spring is a kind of cord reinforced rubber capsule, inner compression air, using the compressibility of gas spring effect's shock absorbing rubber product, has long pillow type, gourd type and diaphragm type etc.Type.In collapsible airtight container fills with compressed air, using air elasticity effect's spring, commonly known as air bag, air bag type cylinder and skin bag cylinder etc., rubber air spring assembly into assembly, fill into compressed air in air spring, using the compressibility of air realizes elasticity effect, it is the non-metallic spring with spring effect, through the adjustment of air spring can satisfy the comfort of driving under different use environment.

[0003] Through the retrieval, the patent with application No. CN201420494285.4, a kind of air spring for car seat, including air cock, upper plastic piece, upper pressure ring, skin bag, lower pressure ring and lower plastic piece, it is characterized by: the upper plastic piece integration molding includes the screw hole for connecting product, the air inlet hole for connecting air cock and the recess for clamping skin bag.However, in actual use, the above technical scheme has the following defects: air spring overall load performance is weak, when the vehicle load is larger, especially in the bumpy section, air spring is easily damaged due to vibration load, greatly reduce the service life, at the same time, the threat to the safety of vehicle internal personnel, for this purpose, we propose a kind of air spring for truck shock absorber. UTILITY MODEL CONTENT

[0004] The utility model is purposed at providing a kind of air spring for truck shock absorber, to solve the problems raised in the above background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air spring for a truck shock absorber, comprising an air spring body, with a first mounting plate and a second mounting plate fixedly connected to the top and bottom of the air spring body respectively. The first mounting plate and the second mounting plate are connected by a buffer assembly. The buffer assembly includes a first fixed frame, a sliding column, a slider, a buffer spring, a fixed block, a connecting rod, a second fixed frame, an airbag, a movable plate, and a movable rod. Two symmetrically arranged first fixed frames are fixedly connected to the front and rear sides of the top of the second mounting plate. The front and rear sides of the first fixed frame are open. The left and right sides of the inner wall of the first fixed frame are fixedly connected by a sliding column. A slider is slidably fitted on one side of the surface of the sliding column. The surface of the slider is in movable contact with the inner wall of the first fixed frame. The side of the slider near the air spring body penetrates the first fixed frame and extends to the outside of the first fixed frame. A buffer spring is fitted on the other side. The side of the buffer spring closer to the slider abuts against the slider, and the side of the buffer spring away from the slider abuts against the inner wall of the first fixed frame. Fixed blocks are fixedly connected to the left and right sides of the bottom of the first mounting plate. The front and rear sides of the fixed blocks are hinged to the slider through connecting rods. Second fixed frames are fixedly connected to the left and right sides of the top of the second mounting plate. The left and right sides of the second fixed frames are open. An airbag is movably connected inside the second fixed frame. The bottom of the airbag is fixedly connected to the top of the second mounting plate. A movable plate is fixedly connected to the top of the airbag. The surface of the movable plate is in movable contact with the inner wall of the second fixed frame. Two movable rods are fixedly connected to the top of the movable plate. The top of the movable rods penetrates the second fixed frame and extends to the outside of the second fixed frame. The movable rods are movably connected to the second fixed frame. The top of the movable rods is fixedly connected to the bottom of the fixed blocks.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a buffer assembly placed between the first and second mounting plates, combining the mechanical buffering effect of the buffer spring with the gas buffering effect of the airbag to form a double buffer structure. When the truck encounters bumps, the first and second mounting plates move relative to each other, causing a connecting rod to drive a slider to slide on a sliding column and compress the buffer spring. Simultaneously, a movable rod drives a movable plate to compress the airbag, compressing the gas inside the airbag and absorbing the vibration energy. This double buffer structure effectively disperses and absorbs the vibration load during vehicle operation, improving the impact resistance of the air spring body, preventing damage caused by excessive load, significantly extending the service life of the air spring body, and ensuring vehicle driving safety. Attached Figure Description

[0007] Figure 1 This is a front view structural diagram of the present utility model; Figure 2This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of the second fixing frame of this utility model; Figure 4 This is a structural schematic diagram of the first fixing frame of this utility model.

[0008] In the diagram: 1. Air spring body; 2. First mounting plate; 3. Second mounting plate; 4. Buffer assembly; 401. First fixed frame; 402. Sliding column; 403. Sliding block; 404. Buffer spring; 405. Fixed block; 406. Connecting rod; 407. Second fixed frame; 408. Airbag; 409. Movable plate; 410. Movable rod. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0010] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0011] Please see Figures 1-4 An air spring for a truck shock absorber includes an air spring body 1, with a first mounting plate 2 and a second mounting plate 3 fixedly connected to the top and bottom of the air spring body 1, respectively, and the first mounting plate 2 and the second mounting plate 3 are connected by a buffer assembly 4.

[0012] The buffer assembly 4 includes a first fixed frame 401, a sliding column 402, a slider 403, a buffer spring 404, a fixed block 405, a connecting rod 406, a second fixed frame 407, an airbag 408, a movable plate 409, and a movable rod 410. Two symmetrically arranged first fixed frames 401 are fixedly connected to the front and rear sides of the top of the second mounting plate 3. This symmetrical layout can ensure that the air spring remains balanced when under force and avoid local stress concentration.

[0013] In practical implementation, the front and rear sides of the first fixed frame 401 are open. The left and right sides of the inner wall of the first fixed frame 401 are fixedly connected by a sliding column 402. A slider 403 is slidably sleeved on one side of the surface of the sliding column 402. The surface of the slider 403 is in active contact with the inner wall of the first fixed frame 401. The side of the slider 403 near the air spring body 1 passes through the first fixed frame 401 and extends to the outside of the first fixed frame 401. A buffer spring 404 is sleeved on the other side of the surface of the sliding column 402.

[0014] Specifically, the side of the buffer spring 404 closest to the slider 403 abuts against the slider 403, and the side of the buffer spring 404 furthest from the slider 403 abuts against the inner wall of the first fixing frame 401. Fixing blocks 405 are fixedly connected to the left and right sides of the bottom of the first mounting plate 2.

[0015] In practical implementation, the front and rear sides of the fixed block 405 are hinged to the slider 403 via the connecting rod 406. This hinge structure can flexibly adapt to the relative movement between the first mounting plate 2 and the second mounting plate 3. During vehicle operation, when the air spring is subjected to vibration and impact, the slider 403 is driven to slide on the sliding column 402 through the transmission of the connecting rod 406, thereby compressing or stretching the buffer spring 404 to achieve the initial absorption and buffering of vibration energy.

[0016] The top left and right sides of the second mounting plate 3 are fixedly connected to the second fixing bracket 407. The left and right sides of the second fixing bracket 407 are open. The airbag 408 is movably connected inside the second fixing bracket 407.

[0017] Specifically, the bottom of the airbag 408 is fixedly connected to the top of the second mounting plate 3, and a movable plate 409 is fixedly connected to the top of the airbag 408. The surface of the movable plate 409 is in contact with the inner wall of the second fixed frame 407, and two movable rods 410 are fixedly connected to the top of the movable plate 409.

[0018] In practice, the top of the movable rod 410 passes through the second fixed frame 407 and extends to the outside of the second fixed frame 407. The movable rod 410 is movably connected to the second fixed frame 407, and the top of the movable rod 410 is fixedly connected to the bottom of the fixed block 405.

[0019] In practical applications: When a truck encounters bumps while driving, the first mounting plate 2 and the second mounting plate 3 move relative to each other, thereby compressing the air spring body 1 for cushioning. At the same time, the connecting rod 406 drives the slider 403 to slide on the sliding column 402 and compress the buffer spring 404 for cushioning. Simultaneously, the movable rod 410 drives the movable plate 409 to squeeze the airbag 408 for cushioning. The gas inside the airbag 408 is compressed and absorbs the vibration energy. The double buffer structure effectively disperses and absorbs the vibration load during vehicle operation, improves the impact resistance of the air spring body 1, avoids damage caused by excessive load, significantly extends the service life of the air spring body 1, and ensures vehicle driving safety.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air spring for a truck shock absorber, comprising an air spring body (1), characterized in that: The top and bottom of the air spring body (1) are respectively fixedly connected to a first mounting plate (2) and a second mounting plate (3). The first mounting plate (2) and the second mounting plate (3) are connected by a buffer assembly (4). The buffer assembly (4) includes a first fixing frame (401), a sliding column (402), a slider (403), a buffer spring (404), a fixing block (405), a connecting rod (406), a second fixing frame (407), an airbag (408), a movable plate (409), and a movable rod (410). Two symmetrically arranged first fixing frames (401, 402, 403, 404, 405, 406, 407, 408, 409, and 410 are fixedly connected to the front and rear sides of the top of the second mounting plate (3). 01), the front and rear sides of the first fixed frame (401) are open. The left and right sides of the inner wall of the first fixed frame (401) are fixedly connected by a sliding column (402). A slider (403) is slidably sleeved on one side of the surface of the sliding column (402). The surface of the slider (403) is in movable contact with the inner wall of the first fixed frame (401). The side of the slider (403) near the air spring body (1) penetrates the first fixed frame (401) and extends to the outside of the first fixed frame (401). A buffer spring (404) is sleeved on the other side of the surface of the sliding column (402). The buffer spring (404) is close to the sliding column body (1). One side of the block (403) abuts against the slider (403), and the side of the buffer spring (404) away from the slider (403) abuts against the inner wall of the first fixing frame (401). Fixing blocks (405) are fixedly connected to the left and right sides of the bottom of the first mounting plate (2). The front and rear sides of the fixing blocks (405) are hinged to the slider (403) via connecting rods (406). Second fixing frames (407) are fixedly connected to the top left and right sides of the second mounting plate (3). The left and right sides of the second fixing frames (407) are open. An airbag (408) is movably connected inside the second fixing frame (407). The bottom of the airbag (408) is fixedly connected to the top of the second mounting plate (3). A movable plate (409) is fixedly connected to the top of the airbag (408). The surface of the movable plate (409) is in movable contact with the inner wall of the second fixed frame (407). Two movable rods (410) are fixedly connected to the top of the movable plate (409). The top of the movable rods (410) passes through the second fixed frame (407) and extends to the outside of the second fixed frame (407). The movable rods (410) are movably connected to the second fixed frame (407). The top of the movable rods (410) is fixedly connected to the bottom of the fixed block (405).

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