CN213017410U

CN213017410U - Agricultural vehicle shock absorber steel pipe

Info

Publication number: CN213017410U
Application number: CN202021360787.XU
Authority: CN
Inventors: 曹利锋
Original assignee: Hangzhou Shengda Bearing Co ltd
Current assignee: Hangzhou Shengda Bearing Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-20
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a steel pipe of a shock absorber of an agricultural vehicle, wherein the shock absorber comprises a piston rod which is inserted in the steel pipe in a sliding way; the spring is arranged between the piston rod and the steel pipe; the upper end surface of the steel pipe is provided with a sewage discharge structure; the sewage discharge structure comprises a plurality of sewage discharge grooves which are uniformly arranged in the peripheral part, and the sewage discharge grooves extend outwards from the center of the steel pipe in a downward inclination manner; the end face of the steel pipe is provided with lugs which are uniformly distributed in the circumferential direction, and a sewage draining groove is formed in a space between two adjacent lugs; has the advantages that: through the arrangement of the pollution discharge structure, impurities such as dirt, dust and the like carried on the piston rod can be introduced into the utilization pollution discharge groove in the process that the piston rod enters the steel pipe; the foreign materials are prevented from entering the steel pipe, and the normal work of the shock absorber is prevented from being influenced; on the basis of the forming of the sewage draining groove, the convex blocks are built on the two sides of the sewage draining groove, so that the depth of the sewage draining groove can be increased, the cross section area of the sewage draining groove is increased, the quantity of sundries passing through the sewage draining groove is increased, and the sundries can be treated at a higher speed.

Description

Agricultural vehicle shock absorber steel pipe

Technical Field

The utility model relates to an agricultural vehicle bumper shock absorber steel pipe belongs to the bumper shock absorber field.

Background

The shock absorber is an indispensable important part in a vehicle suspension system, is mainly used for inhibiting the shock generated when a shock absorbing spring absorbs shock and rebounds and the impact from the road surface, is widely used for automobiles, and is used for accelerating the attenuation of the vibration of a frame and an automobile body so as to improve the running smoothness of the automobile. When the shock absorber passes through the uneven road surface, although the shock absorbing spring can filter the shock of the road surface, the spring can still reciprocate, and the shock absorber is used for inhibiting the spring from jumping. The shock absorber is too soft, the vehicle body jumps up and down, and the shock absorber is too hard, so that too much resistance is brought, and the normal work of the spring is hindered. In a retrofit process for a suspension system, a stiff damper is used in conjunction with a stiff spring, which stiffness is related to vehicle weight, so that heavier vehicles typically use stiffer dampers. The device connected with the vibration inducing crankshaft is used for resisting the torsional vibration of the crankshaft (namely the phenomenon that the crankshaft is twisted by the impact force of cylinder ignition).

The chinese utility model patent document with publication number "CN 107387647A" discloses that "this bumper shock absorber of automobile shock absorber with adjustable spring" this bumper shock absorber is for constituting by inner tube and urceolus, and the urceolus is close to the tip of inner tube and outwards extends the preceding spacing ring of formation, the inner tube is kept away from a side surface of urceolus and has been seted up the external screw thread, the outside of inner tube is overlapped in proper order and is equipped with preceding spring shim, spring, back spring shim, hardness adjusting nut, the both ends of spring link firmly with preceding spring shim, back spring shim respectively, be equipped with in the hardness adjusting nut with external screw thread complex internal thread portion.

Although the spring is additionally arranged on the basis of the structure of the traditional double-acting shock absorber, the spring is driven to pre-stretch by the hardness adjusting nut which is in threaded connection with the inner cylinder; however, when the piston rod is exposed to the external environment for a long time, dust and foreign materials are carried on the piston rod, and when the piston rod enters the outer cylinder, the shock absorption efficiency of the shock absorber is affected if the dust and the foreign materials are not guided and processed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an agricultural vehicle bumper shock absorber steel pipe can effectively solve the problem that adjusting spring elasticity influences device normal operating in advance.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: the shock absorber 1 comprises a piston rod 2, and the piston rod 2 is inserted in the steel pipe 3 in a sliding manner; the spring 4 is arranged between the piston rod 2 and the steel pipe 3; a sewage discharge structure 5 is arranged on the upper end surface of the steel pipe 3; the sewage draining structure 5 comprises a plurality of sewage draining grooves 501 uniformly arranged on the periphery, and the sewage draining grooves 501 extend downwards from the center of the steel pipe 3 outwards in a downward inclination manner.

Through the arrangement of the pollution discharge structure 5, impurities such as dirt and dust carried on the piston rod 2 can be introduced into the pollution discharge groove 501 in the process that the piston rod 2 enters the steel pipe 3; and impurities are prevented from entering the steel pipe 3 to influence the normal work of the shock absorber.

Further, the drainage structure 5 further comprises a protrusion 502 which is formed on the end surface of the steel pipe 3 and is close to the center of the steel pipe 3 and is inclined outwards and downwards.

Due to the arrangement, the upper end face in the middle of the steel pipe 3 forms a bulge, and the output speed of impurities from the upper end face of the steel pipe 3 can be accelerated according to the fluid mechanics principle.

Preferably, the surface of the protrusion 502 is a plane of rotation.

With the arrangement, the rotating plane is similar to the side surface of the circular truncated cone, so that the machining of the rotating plane is facilitated, and the manufacturing cost is saved.

Preferably, the surface of the protrusion 502 is a rotating arc surface.

With the arrangement, the rotating arc surface can generate arc surface friction with the sundries when the sundries are in contact, and compared with inclined surface friction, the friction force does more work, namely the falling speed is higher.

Further, the end face of the steel pipe 3 is provided with lugs 6 which are uniformly distributed in the circumferential direction, and the sewage discharge groove 501 is formed in a space between two adjacent lugs 6.

With the arrangement, on the basis of molding the sewage draining groove 501, the convex blocks 6 are established on two sides of the sewage draining groove 501, so that the cross sectional area of the sewage draining groove 501 can be increased, and the amount of impurities passing through the sewage draining groove 501 is increased.

Further, the upper end surface of the bump 6 is parallel to the horizontal plane; and one end of the convex block 6, which is close to the central axis of the steel pipe 3, is provided with a fillet.

The arrangement is convenient for placing the lower gasket 8 at the upper end of the lug 6; the fillet is used for draining falling sundries.

Further, the shock absorber 1 further comprises an upper gasket 7, a lower gasket 8, an upper connecting seat 9, an upper retainer ring 10, a lower retainer ring 11 and a lower connecting seat 12; the lower gasket 8 is arranged on the upper end face of the steel pipe 3, and the upper end face is flush with the horizontal plane; the upper baffle ring 10 is arranged at the lower end of the upper connecting seat 9, and one end of the piston rod 2 is arranged on the upper baffle ring 10; the lower retaining ring 11 is arranged on the outer side of the steel pipe 3, and the spring 4 is abutted between the upper retaining ring 10 and the lower retaining ring 11; the lower connecting base 12 is installed on the lower end surface of the steel pipe 3.

So set up, go up connecting seat 9 with connecting seat 12 is connected respectively on the car down, works as when bumper shock absorber 1 is to the car shock attenuation, spring 4 atress is in go up keep off ring 10 with keep off under and compress between the ring 11, drive piston rod 2 gets into in the steel pipe 3, if the effect of the power that spring 4 received is very big, the stroke of compression just is big more, probably can lead to go up gasket 7 with gasket 8 contacts down, triggers final buffer mechanism.

Compared with the prior art, the utility model has the advantages that:

the upper end surface of the steel pipe 3 is provided with a sewage discharge structure 5; the sewage draining structure 5 comprises a plurality of sewage draining grooves 501 which are uniformly arranged at the periphery, and the sewage draining grooves 501 extend downwards from the center of the steel pipe 3 outwards in a downward inclination manner. Through the arrangement of the pollution discharge structure 5, impurities such as dirt and dust carried on the piston rod 2 can be introduced into the pollution discharge groove 501 in the process that the piston rod 2 enters the steel pipe 3; and impurities are prevented from entering the steel pipe 3, and the normal work of the shock absorber is prevented from being influenced.

Drawings

For ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is a three-dimensional structure diagram of the steel pipe of the present invention;

FIG. 3 is a cross-sectional view of a steel pipe according to the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a cross-sectional view of a steel pipe according to an embodiment of the present invention;

FIG. 6 is a diagram of the position relationship of the lower gasket of the present invention;

fig. 7 is a cross-sectional view of three steel pipes according to an embodiment of the present invention.

Description of reference numerals:

1. a shock absorber; 2. a piston rod; 3. a steel pipe; 4. a spring; 5. a pollution discharge structure; 501. a sewage draining groove; 502. a protrusion; 6. a bump; 7. an upper gasket; 8. a lower gasket; 9. an upper connecting seat; 10. an upper baffle ring; 11. a lower baffle ring; 12. a lower connecting seat.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-4, an embodiment of the steel pipe of the shock absorber of the utility model for the agricultural vehicle is shown, the structure of the shock absorber 1 specifically comprises a piston rod 2, a steel pipe 3, an upper gasket 7, a lower gasket 8, an upper connecting seat 9, an upper retainer ring 10, a lower retainer ring 11 and a lower connecting seat 12; the piston rod 2 is inserted in the steel pipe 3 in a sliding manner; the lower gasket 8 is bonded on the upper end surface of the steel pipe 3, and the upper end surface is flush with the horizontal plane; the upper baffle ring 10 is fixed at the lower end of the upper connecting seat 9 in a screw connection mode, and one end of the piston rod 2 is fixedly arranged on the upper baffle ring 10; the lower retaining ring 11 is arranged on the outer side of the steel pipe 3, and the spring 4 is propped between the upper retaining ring 10 and the lower retaining ring 11; the lower connecting seat 12 is fixed on the lower end surface of the steel pipe 3; the upper end surface of the steel pipe 3 is provided with a sewage discharge structure 5; the sewage draining structure 5 comprises a plurality of sewage draining grooves 501 which are uniformly arranged at the periphery, and the sewage draining grooves 501 extend downwards from the center of the steel pipe 3 outwards in a downward inclination manner. Through the arrangement of the pollution discharge structure 5, impurities such as dirt and dust carried on the piston rod 2 can be introduced into the pollution discharge groove 501 in the process that the piston rod 2 enters the steel pipe 3; and impurities are prevented from entering the steel pipe 3, and the normal work of the shock absorber 1 is prevented from being influenced.

The sewage discharge structure 5 also comprises a bulge 502 which is formed at the end surface of the steel pipe 3, is close to the center of the steel pipe 3 and is inclined downwards outwards, and the surface of the bulge 502 is a rotating plane, so that the bulge 502 is formed at the upper end surface in the middle of the steel pipe 3, the output speed of sundries from the upper end surface of the steel pipe 3 can be accelerated, the probability of blocking the steel pipe 3 is reduced, and the service life of the device is prolonged; the rotating plane is similar to the side surface of the circular truncated cone, so that the drainage of sundries can be facilitated, the machining of the rotating plane is facilitated, and the manufacturing cost is saved.

To bumper shock absorber 1's structure, go up connecting seat 9 and connect respectively on the car with lower connecting seat 12, when bumper shock absorber 1 carries out the shock attenuation to the car, spring 4 atress is compressed between last fender ring 10 and lower fender ring 11, drives during piston rod 2 gets into steel pipe 3, if the effect of the power that spring 4 received is very big, then the stroke of compression just is big more, probably can lead to gasket 7 and lower gasket 8 contact, triggers final buffer mechanism.

Example two

Referring to fig. 5-6, the difference between this embodiment and the above embodiment is:

the rotary plane is provided with the lugs 6 which are uniformly distributed in the circumferential direction, the lugs 6 and the steel pipe 3 are integrally formed, namely on the basis of forming the sewage draining groove 501, the lugs 6 are established on the two sides of the sewage draining groove 501, the depth of the sewage draining groove 501 can be increased, the cross section area of the sewage draining groove 501 is increased, the quantity of sundries passing through the sewage draining groove 501 is increased, and the sundries can be treated at a higher speed; the upper end face of the bump 6 is parallel to the horizontal plane, and the horizontal plane can be suitable for most of the lower gaskets 8, does not need to be customized, and can save cost; the convex block 6 is provided with a round angle close to one end of the central axis of the steel pipe 3, the round angle is used for draining the falling sundries, and the sundries enter the sewage draining groove 501 to be drained with higher speed.

EXAMPLE III

Referring to fig. 5-7, the present embodiment is different from the above embodiments in that:

the surface of the bulge 502 is a rotating arc surface; in the process that the sundries slide off the surface of the protrusion 502, the sundries and the surface of the protrusion 502 generate friction, the larger the friction force is, the more the work is, the higher the sliding speed is, and compared with the rotating plane, the rotating arc surface generates the friction force which is larger than that of the rotating plane when the sundries are in contact, so that the falling speed of the sundries on the rotating arc surface is higher.

Example four

Referring to fig. 7, the difference between the present embodiment and the above embodiment is:

the difference between the present embodiment and the above embodiments is that the bump 6 and the steel pipe 3 are not integrally formed, but the bump 6 is formed and then mounted on the steel pipe 3; therefore, the difficulty of directly processing the lug 6 and the sewage discharge groove 501 between the lugs 6 on the steel pipe 3 can be reduced, the processing cost is reduced, and the production efficiency is improved.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. A shock absorber steel pipe for an agricultural vehicle, wherein the shock absorber (1) comprises

The piston rod (2) is inserted in the steel pipe (3) in a sliding manner;

the spring (4), the said spring (4) is set up between said piston rod (2) and said steel tube (3);

the method is characterized in that: a sewage discharge structure (5) is arranged on the upper end surface of the steel pipe (3);

the sewage discharge structure (5) comprises a plurality of sewage discharge grooves (501) which are uniformly arranged on the periphery, and the sewage discharge grooves (501) extend downwards from the center of the steel pipe (3) to the outside in a downward inclination manner.

2. The agricultural vehicle shock absorber steel pipe of claim 1, characterized in that: the sewage draining structure (5) further comprises a bulge (502) which is formed on the end face of the steel pipe (3) and is close to the center of the steel pipe (3) and is outwards and downwards inclined.

3. The agricultural vehicle shock absorber steel pipe of claim 2, characterized in that: the surface of the bulge (502) is a rotating plane.

4. The agricultural vehicle shock absorber steel pipe of claim 2, characterized in that: the surface of the bulge (502) is a rotary cambered surface.

5. The agricultural vehicle shock absorber steel pipe of claim 1, 2 or 3, characterized in that: the steel pipe (3) is provided with lugs (6) which are circumferentially and uniformly distributed on the end face, and the sewage discharge groove (501) is formed in the space between the two adjacent lugs (6).

6. The agricultural vehicle shock absorber steel pipe of claim 4, characterized in that: the steel pipe (3) is provided with lugs (6) which are circumferentially and uniformly distributed on the end face, and the sewage discharge groove (501) is formed in the space between the two adjacent lugs (6).

7. The agricultural vehicle shock absorber steel pipe of claim 5, characterized in that: the upper end surface of the bump (6) is parallel to the horizontal plane; and one end of the convex block (6) close to the central axis of the steel pipe (3) is provided with a fillet.

8. The agricultural vehicle shock absorber steel pipe of claim 6, characterized in that: the upper end surface of the bump (6) is parallel to the horizontal plane; and one end of the convex block (6) close to the central axis of the steel pipe (3) is provided with a fillet.

9. The agricultural vehicle shock absorber steel pipe of claim 7, characterized in that: the shock absorber (1) further comprises an upper gasket (7), a lower gasket (8), an upper connecting seat (9), an upper retaining ring (10), a lower retaining ring (11) and a lower connecting seat (12); the lower gasket (8) is arranged on the upper end surface of the steel pipe (3), and the upper end surface is flush with the horizontal plane; the upper baffle ring (10) is arranged at the lower end of the upper connecting seat (9), and one end of the piston rod (2) is arranged on the upper baffle ring (10); the lower retaining ring (11) is arranged on the outer side of the steel pipe (3), and the spring (4) abuts between the upper retaining ring (10) and the lower retaining ring (11); the lower connecting seat (12) is arranged on the lower end face of the steel pipe (3).

10. The agricultural vehicle shock absorber steel pipe of claim 8, characterized in that: the shock absorber (1) further comprises an upper gasket (7), a lower gasket (8), an upper connecting seat (9), an upper retaining ring (10), a lower retaining ring (11) and a lower connecting seat (12); the lower gasket (8) is arranged on the upper end surface of the bump (6), and the upper end surface is flush with the horizontal plane; the upper baffle ring (10) is arranged at the lower end of the upper connecting seat (9), and one end of the piston rod (2) is arranged on the upper baffle ring (10); the lower retaining ring (11) is arranged on the outer side of the steel pipe (3), and the spring (4) abuts between the upper retaining ring (10) and the lower retaining ring (11); the lower connecting seat (12) is arranged on the lower end face of the steel pipe (3).