CN218480089U

CN218480089U - Shock absorber

Info

Publication number: CN218480089U
Application number: CN202222913729.0U
Authority: CN
Inventors: 陆敏敏
Original assignee: Changzhou Zongma Machinery Factory
Current assignee: Changzhou Zongma Machinery Factory
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-02-14
Anticipated expiration: 2032-11-02

Abstract

The utility model belongs to the technical field of automobile-used accessory and specifically relates to a shock absorber is related to, it includes damper cylinder and shock tube, damper cylinder's internal diameter is unanimous with damper tube's external diameter, damper tube slides in damper cylinder and sets up, be provided with damping spring in the damper tube, damper tube's opening is located outside the damper cylinder, the hole of stepping down has been seted up on damper tube's the terminal surface, damper tube is located damper cylinder's one end and is provided with the push rod, the one end of push rod is passed the inner wall butt with damper cylinder behind the hole of stepping down, the other end of push rod and damping spring's one end butt, be provided with lubricating oil in the damper tube, the opening part threaded connection that damper cylinder one end was kept away from to the damper tube has the end cover, be provided with the regulation post in the damper tube, the setting of sliding of regulation post, the one end and the end cover butt of regulation post, the other end and the damping spring butt of regulation post. This application has the effect that improves bumper shock absorber shock attenuation effect.

Description

Shock absorber

Technical Field

The application relates to the field of automobile accessories, in particular to a shock absorber.

Background

In the tricycle, a shock absorber is used for absorbing shock of a tricycle body, so that the shock of the tricycle body can be reduced when the tricycle runs on different roads.

In the correlation technique, the bumper shock absorber includes shock tube and shock tube, the internal diameter of shock tube is unanimous with the external diameter of shock tube, the shock tube slides in the shock tube and sets up, be provided with damping spring in the shock tube, one side of shock tube is the opening, the opposite side of shock tube is the pipe wall, the opening of shock tube is located outside the shock tube, the hole of stepping down has been seted up on the terminal surface of shock tube, the one end that the shock tube is located the shock tube is provided with the push rod, the push rod slides and sets up, the one end of push rod is passed behind the hole of stepping down and the inner wall butt of shock tube, the other end of push rod and damping spring's one end butt, be equipped with lubricating oil in the shock tube, with the possibility of being blocked when reducing damping spring and warping, the opening part threaded connection that shock tube one end was kept away from to the shock tube has the end cover, reduce the possibility that lubricating oil leaked, damping spring keeps away from the one end and the butt end cover of push rod.

When the bumper shock absorber was not atred, the one end of push rod and damping spring butt did not produce thrust to damping spring, and when the atress of bumper shock absorber both ends, the push rod was promoted towards the end cover by the damper cylinder for the push rod promotes damping spring, under damping spring's elastic action, makes the bumper shock absorber play absorbing effect.

In view of the above-mentioned related art, the inventor believes that when the load of the tricycle is heavy, the spring force of the damper spring is limited, and the damping effect is not good for the tricycle with heavy load, and thus the damping effect of the damper needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the shock attenuation effect of bumper shock absorber, this application provides a bumper shock absorber.

The application provides a bumper shock absorber adopts following technical scheme:

the utility model provides a shock absorber, includes damper cylinder and shock tube, the internal diameter of damper cylinder is unanimous with the external diameter of damper tube, the damper tube slides in the damper cylinder and sets up, be provided with damping spring in the damper tube, one side of damper tube is the opening, the opposite side of damper tube is the pipe wall, the opening of damper tube is located outside the damper cylinder, the hole of stepping down has been seted up on the terminal surface of damper tube, the one end that the damper tube is located the damper cylinder is provided with the push rod, the one end of push rod is passed behind the hole of stepping down and the inner wall butt of damper cylinder, the other end of push rod and damping spring's one end butt, be provided with lubricating oil in the damper tube, the opening part threaded connection that damper cylinder one end was kept away from to the damper tube has the end cover, be provided with the regulation post in the damper tube, the setting of sliding of regulation post, the one end and the end cover butt of regulation post, the other end and the damping spring butt of regulation post.

By adopting the technical scheme, when the vehicle is in no-load, the length of the damping spring is the original length, when the loaded weight of the vehicle is larger, the adjusting column slides towards the direction close to the push rod, and the push rod is supported by the damping cylinder due to mutual action of forces, and pushes the damping spring towards the direction of the damping spring, so that the damping spring is tightened, the elasticity of the damping spring is improved, the damping effect of the damper is improved, the adjusting column moves towards the direction far away from the push rod, and the elasticity of the damping spring is reduced; the elasticity of the damping spring can be adjusted by sliding the adjusting column, and the operation is simple and convenient.

Optionally, an adjusting bolt is arranged on the end cover, one end of the adjusting bolt penetrates through the end cover and is in threaded connection with the end cover, and one end of the adjusting bolt, which is located in the shock absorbing pipe, is abutted against one end of the adjusting column, which is far away from the shock absorbing spring

By adopting the technical scheme, the adjusting bolt is rotated to move towards the direction close to the push rod, and because one end of the adjusting bolt, which is positioned in the shock absorption pipe, is abutted against one end of the adjusting column, which is far away from the shock absorption spring, the adjusting bolt can push the adjusting column to slide towards the direction close to the push rod when moving towards the push rod; when the vehicle becomes idle, the adjusting bolt is rotated reversely, so that the adjusting bolt moves towards the direction far away from the push rod, and the adjusting column moves towards the direction far away from the push rod.

Optionally, the adjusting column is provided with a positioning groove in one surface far away from the damping spring, the positioning groove is located at the abutting position of the adjusting bolt and the adjusting column, and one end of the adjusting bolt close to the damping spring is located in the positioning groove.

By adopting the technical scheme, one end of the adjusting bolt close to the damping spring is positioned in the positioning groove, so that the adjusting bolt plays a limiting role on the adjusting column when driving the adjusting column to move, the possibility of shaking of the adjusting column is reduced, and the stability of the adjusting column in the moving process is improved.

Optionally, a limiting plate is arranged on the push rod, the limiting plate and one face, located in the shock tube, of the push rod are connected, the cross-sectional area of the limiting plate is larger than the opening area of the abdicating hole, and the end, located in the shock tube, of the push rod is abutted to the shock absorbing spring through the limiting plate.

Through adopting above-mentioned technical scheme, because the cross-sectional area of limiting plate is greater than the opening area of the hole of stepping down for the push rod is difficult for breaking away from with the shock tube when the hole department of stepping down slides, has reduced the possibility that influences the normal work of bumper shock absorber after push rod and shock tube break away from, has improved the stability of bumper shock absorber during operation.

Optionally, the push rod is sleeved with a buffer spring, one end of the buffer spring is abutted to one side of the limiting plate close to the yielding hole, and the other end of the buffer spring is abutted to the inner wall of the shock absorption tube.

Through adopting above-mentioned technical scheme, when the push rod promoted damping spring, because the effect of power is mutual, damping spring also has the effort to the push rod, and damping spring promotes the push rod towards the one side of keeping away from the end cover for buffer spring is compressed, and under buffer spring's elastic force effect, the bumper shock absorber played further shock attenuation effect.

Optionally, a ratchet is arranged on the adjusting column, the ratchet is arranged along the circumferential direction of the adjusting column, the ratchet is arranged in a stepped manner, the ratchet includes a first unit tooth and a second unit tooth, one end of the first unit tooth closest to the end cover is transited to one end of the second unit tooth farthest from the end cover, one end of the second unit tooth closest to the end cover is transited to one end of the first unit tooth farthest from the end cover, and the tooth tips of the first unit tooth and the tooth tips of the second unit tooth are arranged in the same direction along the circumferential direction of the adjusting column; the end cover is provided with a pawl, the pawl is meshed with the ratchet, the pawl and the ratchet are matched for use, the pawl is arranged in a rotating mode, and a limiting part for limiting the rotation of the adjusting column is arranged on the inner wall of the shock absorption tube.

By adopting the technical scheme, when the pawl rotates from one end, which is farthest away from the end cover, of the first unit tooth to one end, which is closest to the end cover, of the first unit tooth, the adjusting column moves towards the direction close to the push rod under the limiting of the limiting part, the adjusting column pushes the damping spring towards the push rod, and the damping spring and the push rod interact with each other, so that the damping spring is tightened; when the pawl rotates from one end, closest to the end cover, of the first unit tooth to one end, farthest from the end cover, of the second unit tooth, the adjusting column returns to the original position under the limiting of the limiting piece;

when the pawl rotates from one end, which is farthest away from the end cover, of the second unit tooth to one end, which is closest to the end cover, of the second unit tooth, the adjusting column moves towards the direction close to the push rod again under the limiting part, and when the pawl rotates from one end, which is closest to the end cover, of the second unit tooth to one end, which is farthest away from the end cover, of the first unit tooth, the adjusting column returns to the original position again under the limiting part.

Optionally, the pawl includes first claw body and second claw body, first claw body and second claw body are central symmetry setting about the centre of a circle of adjusting the terminal surface, first claw body and the cooperation of first unit tooth are used, the cooperation of second claw body and second unit tooth is used, be provided with the connecting piece on the pawl, first claw body and second claw body pass through the connecting piece and connect, the end cover is worn out to the one end that the pawl was kept away from to the connecting piece.

Through adopting above-mentioned technical scheme, because the first claw body and the second claw body are central symmetry setting about the centre of a circle of adjusting the terminal surface, consequently when the first claw body rotates the certain position of first unit tooth, the second claw body rotates the position department that corresponds to second unit tooth, the cooperation of first claw body and second claw body is used, the application of force homogeneity of pawl to the adjusting column has been improved, the stability of pawl rotation drive adjusting column slip in-process has been improved, the staff rotates the connecting piece and can drive first claw body and the synchronous rotation of second claw body, and the simple operation.

Optionally, the limiting part is an elastic block, the elastic block is connected to the inner wall of the shock absorption tube, a limiting groove is formed in the circumferential side wall of the adjusting column corresponding to the elastic block, and the elastic block slides in the limiting groove.

Through adopting above-mentioned technical scheme, the elastic block has reduced the influence to other spare parts on being located the inner wall of shock attenuation pipe, because the elastic block has elasticity, when consequently will adjusting the post and put into the shock attenuation pipe, when adjusting the post and just contacting the elastic block, the elastic block produces elastic deformation, and the elastic block moves the reconversion original state behind the spacing inslot, and the elastic block slides in the spacing inslot, has realized adjusting post pivoted restriction.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the vehicle is in no load, the length of the damping spring is the original length, when the loaded weight of the vehicle is larger, the adjusting column slides towards the direction close to the push rod, and as the action of the forces is mutual, the push rod is supported by the damping cylinder, and the push rod also pushes the damping spring towards the direction of the damping spring, so that the damping spring is tightened, the elasticity of the damping spring is improved, the damping effect of the damper is improved, the adjusting column moves towards the direction far away from the push rod, and the elasticity of the damping spring is reduced; the elasticity of the damping spring can be adjusted by sliding the adjusting column, so that the operation is simple and convenient;

2. the adjusting bolt is rotated to move towards the direction close to the push rod, and because one end of the adjusting bolt, which is positioned in the shock absorption pipe, is abutted against one end of the adjusting column, which is far away from the shock absorption spring, the adjusting bolt can push the adjusting column to slide towards the direction close to the push rod when moving towards the push rod; when the vehicle becomes idle, the adjusting bolt is rotated reversely, so that the adjusting bolt moves towards the direction far away from the push rod, and the adjusting column moves towards the direction far away from the push rod;

3. when the pawl rotates from one end, which is farthest from the end cover, of the first unit tooth to one end, which is closest to the end cover, of the first unit tooth, the adjusting column moves towards the direction close to the push rod under the limiting of the limiting piece, the adjusting column pushes the damping spring towards the push rod, and the damping spring interacts with the push rod, so that the damping spring is tightened; when the pawl rotates from one end, closest to the end cover, of the first unit tooth to one end, farthest from the end cover, of the second unit tooth, the adjusting column returns to the original position under the limiting of the limiting piece; when the pawl rotates from one end, which is farthest from the end cover, of the second unit tooth to one end, which is closest to the end cover, of the second unit tooth, the adjusting column moves towards the direction close to the push rod again under the limiting effect of the limiting element, and when the pawl rotates from one end, which is closest to the end cover, of the second unit tooth to one end, which is farthest from the end cover, of the first unit tooth, the adjusting column returns to the original position again under the limiting effect of the limiting element.

Drawings

Fig. 1 is a schematic overall structure diagram of a shock absorber according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram for showing an adjusting column in the first embodiment of the present application.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is an enlarged view at B in fig. 2.

Fig. 5 is a cross-sectional view for showing the ratchet teeth in the second embodiment of the present application.

Fig. 6 is an enlarged view at C in fig. 5.

Description of the reference numerals: 1. a damper cylinder; 2. a shock absorbing tube; 21. a hole of abdication; 3. a damping spring; 4. a push rod; 41. a limiting plate; 42. a buffer spring; 5. an end cap; 51. a first seal ring; 52. a first containment ring groove; 6. an adjustment column; 61. adjusting the bolt; 62. positioning a groove; 63. a second seal ring; 64. a second receiving ring groove; 7. a ratchet; 71. a first unit tooth; 72. a second unit tooth; 8. a pawl; 81. a first jaw body; 82. a second jaw body; 83. a connecting rod; 831. a first rod body; 832. a second rod body; 9. an elastic block; 91. a limiting groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example one

The embodiment of the application discloses a shock absorber. Referring to fig. 1, fig. 2 and fig. 3, the bumper shock absorber includes damper cylinder 1 and damper tube 2, damper tube 1's internal diameter is unanimous with damper tube 2's external diameter, damper tube 2 slides in damper cylinder 1, install damping spring 3 in damper tube 2, one side of damper tube 2 is the opening, damper tube 2's opposite side is the pipe wall, damper tube 2's opening is located outside damper cylinder 1, set up the circular shape hole of stepping down 21 on damper tube 2's the terminal surface middle part, damper tube 2 is located damper cylinder 1's one end and installs push rod 4, push rod 4's one end is passed and is stepped down behind hole 21 and damper cylinder 1's inner wall butt, push rod 4 is located damper tube 2's one end and damping spring 3's one end butt, be equipped with lubricating oil in the damper tube 2, damper tube 2 keeps away from the opening part threaded connection of damper cylinder 1 one end and has end cover 5, reduce the possibility that lubricating oil leaked. Install in the shock tube 2 and adjust post 6, adjust the setting that slides of post 6, adjust the week lateral wall of post 6 and be close to the inner wall of shock tube 2, adjust the one end and the 5 butts of end cover of post 6, the one end butt that push rod 4 was kept away from to the other end and the damping spring 3 of adjusting post 6.

When the bumper shock absorber is not atred, the one end of push rod 4 and 3 butts of damping spring does not produce thrust to damping spring 3, and when the atress of bumper shock absorber both ends, push rod 4 is promoted towards end cover 5 by damper cylinder 1, and damping spring 3's one end is extruded by push rod 4, and damping spring 3's the other end is adjusted post 6 extrudees, under damping spring 3's elastic action for the bumper shock absorber plays absorbing effect. When the vehicle is in no-load state, the length of the damping spring 3 is the original length, when the loaded weight of the vehicle is large, the adjusting column 6 slides towards the direction close to the push rod 4, the push rod 4 is supported by the damping cylinder 1 due to mutual action of force, and the push rod 4 pushes the damping spring 3 towards the direction of the damping spring 3, so that the damping spring 3 is tightened, the elasticity of the damping spring 3 is improved, and the damping effect of the damper is improved; will adjust post 6 and remove towards the direction of keeping away from push rod 4 for damping spring 3's elasticity reduces, adjusts post 6 through sliding, can adjust damping spring 3's elasticity, and is easy and simple to handle.

Referring to fig. 2 and 4, the middle part of the end face of the end cover 5 is in threaded connection with an adjusting bolt 61, one end of the adjusting bolt 61, which is located in the shock absorption tube 2, is abutted against one end of the adjusting column 6, which is far away from the shock absorption spring 3, the adjusting bolt 61 is rotated, the adjusting column 6 can slide, when the truck has heavy cargo load, the adjusting bolt 61 is rotated, the adjusting bolt 61 moves towards the direction close to the push rod 4, when the truck becomes no-load, the adjusting bolt 61 is rotated reversely, the adjusting bolt 61 moves towards the direction far away from the push rod 4, and the adjusting column 6 returns to the original position. Adjust the post 6 and keep away from having seted up constant head tank 62 in damping spring 3's the one side, constant head tank 62 is circularly, constant head tank 62 is located adjusting bolt 61 and the butt department of adjusting post 6, adjusting bolt 61 is close to damping spring 3's one end and is located constant head tank 62, the week lateral wall of the body of rod of adjusting bolt 61 is close to the inner wall of constant head tank 62, make adjusting bolt 61 when driving adjusting post 6 and remove, spacing effect has been played to adjusting post 6, the possibility that adjusting post 6 rocked has been reduced, the stability of adjusting post 6 removal in-process has been improved.

Referring to fig. 2 and 3, fixedly connected with circular shape limiting plate 41 on the push rod 4, limiting plate 41 and push rod 4 are located the one side fixed connection of shock tube 2, the cross-sectional area of limiting plate 41 is greater than the open area of the hole 21 of stepping down, limiting

plate

41 and 3 butts of damping spring are passed through to the one end that push rod 4 is located shock tube 2, make push rod 4 difficult when the hole 21 department of stepping down slides break away from with shock tube 2, the possibility that influences the normal work of bumper shock absorber after push rod 4 and shock tube 2 break away from has been reduced, the stability of bumper shock absorber during operation has been improved. The push rod 4 is sleeved with a buffer spring 42, one end of the buffer spring 42 is abutted to one side of the limiting plate 41 close to the yielding hole 21, and the other end of the buffer spring 42 is abutted to the inner wall of the shock absorption tube 2. When push rod 4 promoted damping spring 3, because the effect of power is mutual, damping spring 3 also has the effort to push rod 4, and damping spring 3 promotes push rod 4 towards the one side of keeping away from end cover 5 for buffer spring 42 is compressed, and under buffer spring 42's elastic force effect, the bumper shock absorber plays further shock attenuation effect.

Referring to fig. 4, a first sealing ring 51 is sleeved on a peripheral side wall of the end cover 5, a first containing ring groove 52 for containing the first sealing ring 51 is formed in the peripheral side wall of the end cover 5, the first sealing ring 51 is located in the first containing ring groove 52, the peripheral side wall of the first sealing ring 51 is flush with the peripheral side wall of the end cover 5, influence on other parts is reduced, a second sealing ring 63 is sleeved on the peripheral side wall of the adjusting column 6, a second containing ring groove 64 for containing the second sealing ring 63 is formed in the peripheral side wall of the adjusting column 6, the second sealing ring 63 is located in the second containing ring groove 64, the peripheral side wall of the second sealing ring 63 is flush with the peripheral side wall of the adjusting column 6, influence on other parts is reduced, the first sealing ring 51 is matched with the second sealing ring 63, and possibility of leakage of lubricating oil is further reduced.

The implementation principle of a bumper shock absorber in this application embodiment one does: when the car is empty load, damping spring 3's length is original length, when the weight of carrying cargo of car is great, rotate adjusting bolt 61 for adjusting bolt 61 moves towards the direction that is close to push rod 4, will adjust the direction that post 6 is close to push rod 4 and slide, adjust post 6 with damping spring 3 to 4 departments of push rod extrusion, because the effect of power is mutual, push rod 4 is supported by damper cylinder 1, push rod 4 also promotes damping spring 3 towards damping spring 3's direction, makes damping spring 3 become tight.

Example two

The second embodiment of the application discloses a shock absorber. Referring to fig. 5, the difference between the second embodiment and the first embodiment of the present application is that the adjusting column 6 is fixedly installed with ratchet teeth 7 on one surface close to the end cover 5, the ratchet teeth 7 are equidistantly arranged along the circumferential direction of the adjusting column 6, the ratchet teeth 7 are arranged in a step manner, the ratchet teeth 7 include first unit teeth 71 and second unit teeth 72, the first unit teeth 71 are arranged along the circumferential direction of the adjusting column 6, the second unit teeth 72 are also arranged along the circumferential direction of the adjusting column 6, the first unit teeth 71 and the second unit teeth 72 respectively occupy half positions of the adjusting column 6 in the circumferential direction, one end of the first unit teeth 71 closest to the end cover 5 is transited to one end of the second unit teeth 72 farthest from the end cover 5, one end of the second unit teeth 72 closest to the end cover 5 is transited to one end of the first unit teeth 71 farthest from the end cover 5, and the tooth tips of the first unit teeth 71 and the second unit teeth 72 are arranged in the same direction along the circumferential direction of the adjusting column 6. The side wall of the end cover 5 is fixedly connected with a pawl 8, the pawl 8 is positioned at one side close to the ratchet 7, the pawl 8 is meshed with the ratchet 7, the pawl 8 is matched with the ratchet 7 for use, and the pawl 8 is arranged in a rotating mode.

Referring to fig. 5 and 6, the inner wall of the shock tube 2 is fixedly connected with two elastic blocks 9 for limiting the rotation of the adjusting column 6, the elastic blocks 9 are made of rubber materials, the two elastic blocks 9 are symmetrically arranged about the central axis of the adjusting column 6, a limiting groove 91 is formed in the peripheral side wall of the adjusting column 6 corresponding to the elastic blocks 9, and the elastic blocks 9 are located in the limiting groove 91 and slide. The elastic block 9 is located the inner wall of damper pipe 2 and has reduced the influence to other spare parts, because elastic block 9 has elasticity, consequently when will adjusting post 6 and put into damper pipe 2, when adjusting post 6 rigid contact elastic block 9, elastic block 9 produces elastic deformation, elastic block 9 removes the reconversion original state behind the spacing groove 91, and elastic block 9 slides in spacing groove 91, has realized that restriction regulation post 6 rotates.

When the pawl 8 rotates from one end, farthest away from the end cover 5, of the first unit tooth 71 to one end, closest to the end cover 5, of the first unit tooth 71, under the limit of the elastic block 9, the adjusting column 6 moves towards the direction close to the push rod 4, the adjusting column 6 pushes the damping spring 3 towards the push rod 4, and the damping spring 3 and the push rod 4 interact with each other, so that the damping spring 3 is tightened; when the pawl 8 rotates from the end of the first unit tooth 71 closest to the end cover 5 to the end of the second unit tooth 72 farthest from the end cover 5, the adjusting column 6 returns to the original position under the limit of the elastic block 9; when the pawl 8 rotates from the end of the second unit tooth 72 farthest from the end cover 5 to the end of the second unit tooth 72 closest to the end cover 5, the adjusting column 6 moves toward the direction close to the push rod 4 again under the limit of the elastic block 9, and when the pawl 8 rotates from the end of the second unit tooth 72 closest to the end cover 5 to the end of the first unit tooth 71 farthest from the end cover 5, the adjusting column 6 returns to the original position again under the limit of the elastic block 9.

Referring to fig. 5 and 6, the pawl 8 includes a first pawl body 81 and a second pawl body 82, the first pawl body 81 and the second pawl body 82 are arranged in central symmetry with respect to a center of a circle of the end surface of the adjusting column 6, the first pawl body 81 is used in cooperation with the first unit teeth 71, the second pawl body 82 is used in cooperation with the second unit teeth 72, a pawl tip of the first pawl body 81 and a pawl tip of the second pawl body 82 are arranged in the same direction along the circumferential direction of the adjusting column 6, when the first pawl body 81 rotates to a certain position of the first unit teeth 71, the second pawl body 82 rotates to a position corresponding to the second unit teeth 72, the uniformity of the force applied by the pawl 8 to the adjusting column 6 is improved, and the stability of the rotating pawl 8 driving the adjusting column 6 to slide is improved. Install the connecting piece on pawl 8, first claw body 81 and second claw body 82 pass through the connecting piece to be connected, the connecting piece is connecting rod 83, connecting rod 83 includes first body of rod 831 and the second body of rod 832, the one end and the first claw body 81 fixed connection of first body of rod 831, the other end and the second claw body 82 fixed connection of first body of rod 831, the one end of the second body of rod 832 and the middle part fixed connection of the first body of rod 831, the one end that pawl 8 was kept away from to the second body of rod 832 is worn out end cover 5. The staff holds the second rod 832 and penetrates out of one end of the end cover 5, and rotates the second rod 832, and the first claw body 81 and the second claw body 82 can rotate synchronously through the connection of the first rod 831, so that the operation is simple and convenient.

In the second embodiment of the present application, a damper is implemented according to the following principle: when the pawl 8 rotates from the end of the first unit tooth 71 farthest from the end cover 5 to the end of the first unit tooth 71 closest to the end cover 5, under the limit of the elastic block 9, the adjusting column 6 moves towards the direction close to the push rod 4, the adjusting column 6 pushes the damping spring 3 towards the push rod 4, and the damping spring 3 and the push rod 4 interact with each other, so that the damping spring 3 is tightened; when the pawl 8 rotates from the end of the first unit tooth 71 closest to the end cover 5 to the end of the second unit tooth 72 farthest from the end cover 5, the adjusting column 6 returns to the original position under the limit of the elastic block 9; when the pawl 8 rotates from the end of the second unit tooth 72 farthest from the end cover 5 to the end of the second unit tooth 72 closest to the end cover 5, the adjusting column 6 moves toward the direction close to the push rod 4 again under the limit of the elastic block 9, and when the pawl 8 rotates from the end of the second unit tooth 72 closest to the end cover 5 to the end of the first unit tooth 71 farthest from the end cover 5, the adjusting column 6 returns to the original position again under the limit of the elastic block 9.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a shock absorber, including damper cylinder (1) and shock tube (2), the internal diameter of damper cylinder (1) is unanimous with the external diameter of shock tube (2), shock tube (2) slide in damper cylinder (1) and set up, be provided with damping spring (3) in shock tube (2), one side of shock tube (2) is the opening, the opposite side of shock tube (2) is the pipe wall, the opening of shock tube (2) is located outside damper cylinder (1), set up hole of stepping down (21) on the terminal surface of shock tube (2), one end that shock tube (2) are located damper cylinder (1) is provided with push rod (4), the one end of push rod (4) is passed hole of stepping down (21) back and the inner wall butt of damper cylinder (1), the other end of push rod (4) and the one end butt of damping spring (3), be provided with lubricating oil in shock tube (2), the threaded connection that damper cylinder (2) kept away from opening part (1) one end has end cover (5), its characterized in that: be provided with in shock attenuation pipe (2) and adjust post (6), adjust the setting that slides of post (6), the one end and end cover (5) butt of adjusting post (6), the other end and damping spring (3) butt of adjusting post (6).

2. A shock absorber according to claim 1, wherein: be provided with adjusting bolt (61) on end cover (5), the one end of adjusting bolt (61) is passed end cover (5) and is connected with end cover (5) screw thread, adjusting bolt (61) are located the one end of shock attenuation pipe (2) and adjust post (6) and keep away from the one end butt of damping spring (3).

3. A shock absorber according to claim 2, wherein: the utility model discloses a damping spring (3) of adjusting the shock absorber, including adjusting post (6), constant head tank (62) have been seted up on the one side of keeping away from damping spring (3) in regulation post (6), constant head tank (62) are located adjusting bolt (61) and the butt department of adjusting post (6), the one end that adjusting bolt (61) are close to damping spring (3) is located constant head tank (62).

4. A shock absorber according to claim 1, wherein: be provided with limiting plate (41) on push rod (4), limiting plate (41) and push rod (4) are located the one side connection of shock attenuation pipe (2), the cross-sectional area of limiting plate (41) is greater than the open area of hole (21) of stepping down, limiting plate (41) and damping spring (3) butt are passed through to the one end that push rod (4) are located shock attenuation pipe (2).

5. A shock absorber according to claim 4, wherein: the cover is equipped with buffer spring (42) on push rod (4), one end and limiting plate (41) of buffer spring (42) are close to the one side butt of hole (21) of stepping down, the other end of buffer spring (42) and the inner wall butt of shock tube (2).

6. A shock absorber according to claim 1, wherein: the ratchet teeth (7) are arranged on the adjusting column (6), the ratchet teeth (7) are arranged along the circumferential direction of the adjusting column (6), the ratchet teeth (7) are arranged in a stepped mode, each ratchet tooth (7) comprises a first unit tooth (71) and a second unit tooth (72), one end, closest to the end cover (5), of each first unit tooth (71) is transited to one end, farthest away from the end cover (5), of each second unit tooth (72), one end, closest to the end cover (5), of each second unit tooth is transited to one end, farthest away from the end cover (5), of each first unit tooth (71), and the tooth tips of the second unit teeth (72) are arranged in the same direction along the circumferential direction of the adjusting column (6); the shock absorption pipe is characterized in that a pawl (8) is arranged on the end cover (5), the pawl (8) is meshed with the ratchet (7), the pawl (8) and the ratchet (7) are matched for use, the pawl (8) is rotatably arranged, and a limiting part for limiting the rotation of the adjusting column (6) is arranged on the inner wall of the shock absorption pipe (2).

7. A shock absorber according to claim 6, wherein: pawl (8) are including first claw body (81) and the second claw body (82), first claw body (81) and the second claw body (82) are central symmetry setting about the centre of a circle of adjusting post (6) terminal surface, first claw body (81) and first unit tooth (71) cooperation are used, second claw body (82) and second unit tooth (72) cooperation are used, be provided with the connecting piece on pawl (8), first claw body (81) and second claw body (82) pass through the connecting piece and connect, end cover (5) are worn out to the one end that pawl (8) were kept away from to the connecting piece.

8. A shock absorber according to claim 6, wherein: the locating part is elastic block (9), elastic block (9) are connected on the inner wall of shock tube (2), spacing groove (91) have been seted up to corresponding elastic block (9) department on the week lateral wall of regulation post (6), elastic block (9) slide in spacing groove (91).