A split type adjustable spring preload shock absorber

Abstract

The present invention discloses a split-type adjustable spring preload shock absorber. A split-type adjustable spring preload shock absorber comprises a top cover plate, a bottom cover plate, a bottom plate and a compression spring, a compression spring is welded on the top of the bottom cover plate, and a second transmission rod is sleeved inside the compression spring, the top of the bottom cover plate is welded to the second transmission rod, an oil delivery groove is provided inside the second transmission rod, a bearing is welded on the top of the compression spring, a buffer rubber is slidably embedded on the top of the second transmission rod, third transmission rods are rotatably connected to the top of the second slide groove on both sides through a rotating shaft, and the bottom of the third transmission rod is slidably connected to the first slide groove provided on the top of the bottom plate. In the present invention, the lubricating oil is sprayed back to the second transmission rod through the oil delivery groove during the shock absorber operation process, which not only saves the use of lubricating oil, but also is beneficial to the life of the shock absorbing machinery. The overall structure is practical and effective, and will have broad development prospects in the future.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical shock absorption, and in particular relates to a split-type adjustable spring preload shock absorber. Background Art

[0002] Shock absorbers are used to suppress the shock caused by the rebound of springs after absorbing shock and the impact from the road surface. They are widely used in automobiles to accelerate the attenuation of frame and body vibrations to improve the driving smoothness of the car. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jumping.

[0003] Existing shock absorbers are widely used in various fields. However, the following problems arise during use. First, the existing split-type adjustable spring preload shock absorber is widely used in automobile shock absorption mechanism, but when encountering left and right deflection force in other places, the shock absorber structure is prone to deformation, thereby causing the shock absorber to gradually fail; secondly, the existing split-type adjustable spring preload shock absorber will make noise when twisted during use and cause certain loss to the shock absorber; finally, the lubricating oil gradually falls to the bottom during use and loses the lubricating effect. Summary of the invention

[0004] The purpose of the present invention is to provide a split spring preload adjustment shock absorber to solve the problems of easy deformation and torsion noise caused by left and right deflection and lubricating oil falling to the bottom and losing lubrication.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A split-type adjustable spring preload shock absorber comprises a top cover plate, a bottom cover plate, a bottom plate and a compression spring, a compression spring is welded on the top of the bottom cover plate, and a second transmission rod is sleeved inside the compression spring, the top of the bottom cover plate is welded to the second transmission rod, an oil delivery groove is provided inside the second transmission rod, an oil inlet is provided at the bottom of the second transmission rod, and the oil inlet is connected to the oil delivery groove, a bearing is welded on the top of the compression spring, and the second transmission rod is sleeved inside the bearing, a buffer rubber is slidably embedded on the top of the second transmission rod, and an elastic pad is provided between the buffer rubber and the bearing A piece, a first transmission rod is welded on the top of the top cover plate, second spherical sleeves are welded at the four corners of the bottom of the top cover plate, first spherical sleeves are welded at the four corners of the top of the bottom cover plate, and the four first spherical sleeves are respectively connected through spherical rotating shafts welded at both ends of the fourth transmission rod, a second slide groove is welded on the bottom of the bottom cover plate, and the second slide groove is elastically connected to the bottom plate through a first tension spring, third transmission rods are rotatably connected to the top of the second slide groove on both sides through the rotating shaft, and the bottom of the third transmission rod is slidably connected to the first slide groove opened on the top of the bottom plate.

[0007] There are two groups of third transmission rods in total, and the bottoms of the two groups of third transmission rods are elastically connected to the bottom plate through the second tension spring.

[0008] Wherein, the bottom of the second sliding block is slidably connected to a first sliding groove provided on the top of the bottom plate.

[0009] There are four fourth transmission rods in total, and the four fourth transmission rods are respectively located at the four corners of the top of the bottom cover plate.

[0010] The elastic gasket is triangular in shape, and the top of the elastic gasket fits with the bottom of the buffer rubber, and the bottom of the elastic gasket fits with the top of the bearing.

[0011] There are two oil inlets in total, and the two oil inlets are connected to the oil delivery groove at the central axis of the horizontal plane.

[0012] Wherein, the cross section of the bottom cover plate is U-shaped, and the bottom cover plate is bowl-shaped as a whole.

[0013] Wherein, the buffer rubber is slidably embedded with the second transmission rod through a groove provided inside.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. In the present invention, the bottom plate and the first transmission rod are installed at the position where shock absorption is required. When encountering unequal forces on both sides, the two third transmission rods are deflected to a balanced state at the same time, but the center position is always kept the same as the center position of the rod of the first bed. Under the action of different forces on both sides, the two second sliders are pulled apart, and the two second tension springs are stretched to different degrees. The end with a large tension force is subjected to a greater resistance, thereby preventing the shock absorber from being deformed due to the deflection force on both sides.

[0016] 2. In the present invention, when the first transmission rod and the bottom plate are subjected to an inward squeezing force, the compression spring is squeezed and deformed, at which time the bearing rotates, and a relative rotation occurs between the top cover plate and the bottom cover plate, thereby driving the fourth transmission rod to deviate, thereby avoiding changes in the overall structural stability due to the relative rotation between the top cover and the bottom cover plate.

[0017] 3. In the present invention, during the rebound process after the shock absorber completes shock absorption, the top of the second transmission rod and the inner surface wall of the buffer rubber form an inner cavity, and negative pressure is obtained during the movement of the second transmission rod toward the bottom, and the lubricating oil at the oil inlet position is pumped to the top of the second transmission rod, and the lubricating oil is applied to the entire machine through the oil delivery groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2It is a schematic diagram of the AA cross-section structure in the present invention;

[0020] Figure 3 It is a schematic diagram of the BB cross-section structure in the present invention.

[0021] Markings in the figure: 1. Top cover plate; 2. First transmission rod; 3. Oil delivery groove; 4. Bearing; 5. Compression spring; 6. Second transmission rod; 7. Oil inlet; 8. First tension spring; 9. Bottom plate; 10. First slide groove; 11. Second tension spring; 12. Second slider; 13. Third transmission rod; 14. Bottom cover plate; 15. First spherical bushing; 16. Fourth transmission rod; 17. Spherical shaft; 18. Second spherical bushing; 19. Elastic gasket; 20. Buffer rubber; 21. Second slide groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Reference Figure 1-3A split-type adjustable spring preload shock absorber comprises a top cover plate 1, a bottom cover plate 14, a bottom plate 9 and a compression spring 5. The compression spring 5 is welded on the top of the bottom cover plate 14, and a second transmission rod 6 is sleeved inside the compression spring 5. The top of the bottom cover plate 14 is welded to the second transmission rod 6. An oil delivery groove 3 is opened inside the second transmission rod 6. An oil inlet 7 is opened at the bottom of the second transmission rod 6, and the oil inlet 7 is connected to the oil delivery groove 3. A bearing 4 is welded on the top of the compression spring 5, and the second transmission rod 6 is sleeved inside the bearing 4. A buffer rubber 20 is slidably embedded on the top of the second transmission rod 6, and an elastic gasket 19 is arranged between the buffer rubber 20 and the bearing 4. The top of the top cover plate 1 is welded The first transmission rod 2 and the top cover plate 1 are welded with second spherical sleeves 18 at the four corners of the bottom, the first spherical sleeves 15 are welded at the four corners of the top of the bottom cover plate 14, and the four first spherical sleeves 15 are respectively connected by the spherical shafts 17 welded at both ends of the fourth transmission rod 16, a second slide groove 21 is welded at the bottom of the bottom cover plate 14, and the second slide groove 21 is elastically connected to the bottom plate 9 through the first tension spring 8, the top of the second slide groove 21 is rotatably connected to the third transmission rod 13 on both sides through the shaft, and the bottom of the third transmission rod 13 is slidably connected to the first slide groove 10 opened on the top of the bottom plate 9, and the top of the second transmission rod 6 and the center slide groove of the buffer rubber 20 form a cavity.

[0025] Furthermore, two groups of third transmission rods 13 are provided, and the bottoms of the two groups of third transmission rods 13 are elastically connected to the bottom plate 9 through the second tension springs 11, which can reduce vibration when the two ends of the bottom plate 9 are subjected to different forces.

[0026] Furthermore, the bottom of the second sliding block 12 is slidably connected to the first sliding groove 10 opened on the top of the bottom plate 9 , so that the second sliding block 12 can slide on the bottom plate 9 .

[0027] Furthermore, four fourth transmission rods 16 are provided, and the four fourth transmission rods 16 are respectively located at the four corners of the top of the bottom cover plate 14, so as to avoid damage when the top cover plate 1 and the bottom cover plate 14 are twisted.

[0028] Furthermore, the elastic gasket 19 is triangular in shape, and the top of the elastic gasket 19 fits with the bottom of the buffer rubber 20 , and the bottom of the elastic gasket 19 fits with the top of the bearing 4 , thereby reducing the gap between the bearing 4 and the buffer rubber 20 .

[0029] Furthermore, two oil inlets 7 are provided, and the two oil inlets 7 are connected to the oil delivery groove 3 at the central axis of the horizontal plane, so that the lubricating oil flowing to the bottom is pumped up under the negative air pressure of the cavity.

[0030] Furthermore, the cross section of the bottom cover plate 14 is U-shaped, and the bottom cover plate 14 is bowl-shaped as a whole, which is helpful for collecting lubricating oil.

[0031] Furthermore, the buffer rubber 20 is provided with a groove inside to slide with the second transmission rod 6 , so that the second transmission rod 6 slides up and down.

[0032] Working principle: First, install the bottom plate 9 and the first transmission rod 2 to the position where shock absorption is required. When encountering unequal forces on both sides, the two third transmission rods 13 are deflected to a balanced state at the same time, but the center position is always kept the same as the center position of the first transmission rod 2. Under the action of different forces on both sides, the two second sliders 12 are pulled apart, and the two second tension springs 11 are stretched to different degrees. The end with greater tension is subjected to greater resistance, thereby preventing the shock absorber from being deformed due to the deflection force on both sides; secondly, when the first transmission rod 2 and the bottom plate 9 are subjected to an inward squeezing force, the compression springs 13 are compressed. The spring 5 is squeezed and deformed, and the bearing 4 rotates at this time, and the top cover plate 1 and the bottom cover plate 14 rotate relative to each other, thereby driving the fourth transmission rod 16 to deflect, avoiding the change of the overall structural stability shape due to the relative rotation between the top cover plate 1 and the bottom cover plate 14; finally, in the process of shock absorber shock absorption and rebound, the top of the second transmission rod 6 and the inner wall of the buffer rubber 20 form an inner cavity, and negative pressure is obtained in the process of the second transmission rod 6 moving to the bottom, and the lubricating oil at the oil inlet 7 is pumped to the top of the second transmission rod 6, and the lubricating oil is applied to the entire machine through the oil tank 3.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A split-type adjustable spring preload shock absorber, comprising a top cover plate (1), a bottom cover plate (14), a bottom plate (9) and a compression spring (5), characterized in that: A compression spring (5) is welded to the top of the bottom cover plate (14), and a second transmission rod (6) is sleeved inside the compression spring (5). The top of the bottom cover plate (14) is welded to the second transmission rod (6). An oil delivery groove (3) is provided inside the second transmission rod (6). An oil inlet (7) is provided at the bottom of the second transmission rod (6), and the oil inlet (7) is connected to the oil delivery groove (3). A bearing (4) is welded to the top of the compression spring (5), and the second transmission rod (6) is sleeved inside the bearing (4). A buffer rubber (20) is slidably embedded on the top of the second transmission rod (6), and an elastic gasket (19) is provided between the buffer rubber (20) and the bearing (4). The top of the top cover plate (1) is welded to the first A transmission rod (2), wherein second spherical sleeves (18) are welded at four corners of the bottom of the top cover plate (1), and first spherical sleeves (15) are welded at four corners of the top of the bottom cover plate (14), and the four first spherical sleeves (15) are respectively connected to each other through spherical rotating shafts (17) welded at both ends of a fourth transmission rod (16). A second slide groove (21) is welded at the bottom of the bottom cover plate (14), and the second slide groove (21) is elastically connected to the bottom plate (9) through a first tension spring (8), and the top of the second slide groove (21) is rotatably connected to a third transmission rod (13) through a rotating shaft, and the bottom of the third transmission rod (13) is slidably connected to a first slide groove (10) provided at the top of the bottom plate (9); Two groups of the third transmission rods (13) are provided in total, and the bottoms of the two groups of third transmission rods (13) are elastically connected to the bottom plate (9) via second tension springs (11); The bottom of the second sliding block (12) is slidably connected to the first sliding groove (10) provided on the top of the bottom plate (9); A total of four fourth transmission rods (16) are provided, and the four fourth transmission rods (16) are respectively located at four corners of the top of the bottom cover plate (14); The elastic gasket (19) is triangular in shape, and the top of the elastic gasket (19) fits with the bottom of the buffer rubber (20), and the bottom of the elastic gasket (19) fits with the top of the bearing (4); There are two oil inlets (7) in total, and the two oil inlets (7) are connected to the oil delivery groove (3) at the central axis of the horizontal plane; The bottom cover plate (14) has a U-shaped cross section, and the bottom cover plate (14) is bowl-shaped as a whole; The buffer rubber (20) is slidably fitted with the second transmission rod (6) via a groove provided inside.

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