CN216789086U

CN216789086U - Adjustable buffer

Info

Publication number: CN216789086U
Application number: CN202123280372.9U
Authority: CN
Inventors: 于维铭; 赵晶晶
Original assignee: Pulilai Suzhou Intelligent Technology Co ltd
Current assignee: Pulilai Suzhou Intelligent Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-21
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to an adjustable buffer, which comprises an outer cylinder body and an inner cylinder body, wherein the inner cylinder body is provided with at least one group of oil discharge holes, the oil discharge holes are correspondingly provided with oil discharge grooves, the outer cylinder body is provided with a groove with a preset length, and a second accommodating cavity is formed between the groove on the inner wall of the outer cylinder body and the outer wall of the inner cylinder body; the oil discharge groove corresponding to the oil discharge hole is a concave tapered groove; the second end of the inner cylinder body is also provided with an adjusting knob. The adjustment to hydraulic oil compression displacement has been realized through the setting of the gradual change groove of oil drain hole on the interior cylinder body and corresponding oil drain hole setting, has realized fixed buffering through the setting in line hole, has realized the fixed buffering of adjustable buffer and the compatibility of adjustable buffering through setting up of adjust knob.

Description

Adjustable buffer

Technical Field

The utility model relates to the field of buffer equipment, in particular to an adjustable buffer.

Background

The buffer is one of the device commonly used in the intelligent manufacturing field, and traditional buffer generally is fixed buffer, converts kinetic energy through hydraulic cushion to control speed variation, hydraulic damping cushions the speed reduction to stopping to the object that acts on it, can play the guard action of certain degree, is often used for semiconductor trade, car intelligent manufacturing, automation equipment, electric power trade, is one kind and prevents that hard collision from leading to the safe buffer that the mechanism damaged.

The buffer is often required to have different design requirements according to different use occasions. The traditional buffer has no adjusting function, has a single application scene and is not beneficial to adapting to the working requirements of multiple occasions.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of single application scene of the buffer in the prior art, and provides an adjustable buffer which meets the requirements of different working conditions by adjusting the gear of the buffer, has good compatibility and saves resources.

In order to achieve the above object, the present invention provides an adjustable damper, which comprises an outer cylinder, an inner cylinder, a piston rod, and a piston head; the piston rod is sealed by the end seat and movably arranged at the first end of the outer cylinder body, and the second end of the outer cylinder body is sealed by the second end of the inner cylinder body; the inner cylinder body is arranged inside the outer cylinder body; the first end of the piston rod is connected with a piston head, the piston head is arranged in the inner cylinder body, and the piston head divides the inner cylinder body into a first inner cavity close to one side of the piston rod and a second inner cavity close to the second end of the inner cylinder body; the inner cylinder body is provided with at least one group of oil discharge holes, the oil discharge holes are correspondingly provided with oil discharge grooves, the inner wall of the outer cylinder body is provided with a groove with a preset length along the axial direction of the outer cylinder body, and a first accommodating cavity and a second accommodating cavity which are mutually communicated are formed between the groove on the inner wall of the outer cylinder body and the outer wall of the inner cylinder body; the oil discharge groove is a concave gradual change groove; the piston head is provided with a one-way valve connected with the first accommodating cavity, and the one-way valve is blocked when the piston rod is compressed and is opened when the piston rod is stretched; the inner cylinder body also comprises at least one group of straight-line holes, and hydraulic oil is discharged into the second accommodating cavity through the straight-line holes; the second end of the inner cylinder body is provided with an adjusting knob which drives the inner cylinder body to rotate relative to the outer cylinder body.

The adjustment to the hydraulic oil compression displacement is realized through the oil discharge hole on the inner cylinder body and the setting of the gradual change groove corresponding to the oil discharge hole, the fixed buffering is realized through the setting of the straight-line hole, and the compatibility of the adjustable buffering of the fixed buffering agent of the adjustable buffering device is realized through the setting of the adjusting knob.

Preferably, the first inner cavity is internally sleeved with a foam energy accumulator.

The hydraulic oil is buffered by arranging the foam energy accumulator.

Preferably, a spring is arranged inside the inner cylinder body, a first end of the spring abuts against the piston head, and a second end of the spring abuts against the bottom end of the inner cylinder body.

The automatic reset of the compressed piston rod is realized through the arrangement of the spring.

Preferably, the piston rod is provided with a limiting snap ring, and the outer diameter of the limiting snap ring is smaller than the inner diameter of the inner cylinder body.

The piston rod is limited and guided by the limiting snap ring.

Preferably, the check valve comprises a through hole which is arranged on the piston head and communicated with the first inner cavity and the second inner cavity, a steel ball and a steel ball containing cavity for containing the steel ball are arranged at one end, close to the second inner cavity, of the through hole, and the diameter of the steel ball is larger than that of the through hole.

Preferably, the second end of the inner cylinder block is provided with a sealing bolt for sealing the oil filler hole.

The hydraulic oil is added or replaced conveniently through the oil injection port and the sealing bolt.

Preferably, the end of the outer cylinder is further provided with a tightening bolt which extends through the outer cylinder and bears inwardly against the inner cylinder to prevent rotation of the inner cylinder.

The limit of the inner cylinder body under the working state is realized through the arrangement of the tightening bolt, and the stability of the working device of the adjustable buffer is ensured.

Preferably, the tapered slot cross-sectional area is tapered.

Preferably, the oil discharge holes are in one group, the straight-line holes are in one group, and the oil discharge holes and the straight-line holes are not on the same axis.

Preferably, the oil discharge holes are two groups, the straight-line holes are one group, and the two groups of oil discharge holes and the straight-line holes are not on the same axis.

According to the technical scheme provided by the utility model, the adjustment of the compression displacement of the hydraulic oil is realized through the arrangement of the oil discharge hole on the inner cylinder body and the gradual change groove arranged corresponding to the oil discharge hole, the fixed buffering is realized through the arrangement of the straight discharge hole, and the compatibility of the fixed buffering agent and the adjustable buffering of the adjustable buffering agent is realized through the arrangement of the adjusting knob. The multi-stage buffer adjustment of the adjustable buffer is realized through the combination of the straight-line holes, the oil discharge holes and the oil discharge grooves, and the adaptability of the adjustable buffer is improved.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the utility model without any limiting effect on the scope of the utility model, and that the various components in the drawings are not drawn to scale.

FIG. 1 is a cross-sectional view of an adjustable bumper according to one embodiment of the present invention;

FIG. 2 is a sectional view of an outer cylinder according to an embodiment of the present invention;

FIG. 3 is a front view of an inner cylinder block according to an embodiment of the present invention;

fig. 4 is a rear view of an inner cylinder block according to an embodiment of the present invention.

Description of reference numerals:

an outer cylinder body 1; an inner cylinder body 2; a first lumen 2 a; a second lumen 2 b; a piston rod 3; a piston head 4; an end seat 5; an end cap 6; a trench 7; an oil discharge hole 8; the first oil discharge hole 8 a; a second oil drain hole 8b, a third straight hole 8 c; a first accommodation groove 9; a second accommodation groove 10; a passage 11; a check valve 12; a steel ball 121; a foam accumulator 13; a spring 14; a limit snap ring 15; a stem seal 16; a screw 17; an adjustment knob 18; a seal bolt 19; a seal ring 20; the bolt 21 is tightened.

Detailed Description

The utility model is explained in more detail below with reference to the figures and examples. Reference will now be made in detail to the preferred embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following preferred embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely preferred for implementing the apparatus and method in accordance with certain aspects of the utility model, as detailed in the appended claims, and other ways of implementing the utility model will occur to those skilled in the art and are within the scope of the utility model. In the following detailed description, directional terms, such as "upper", "lower", "inner", "outer", "longitudinal", "lateral", and the like, are used with reference to the orientation depicted in the accompanying drawings. Components of embodiments of the present invention may be positioned in a variety of orientations, and the directional terminology is used for purposes of illustration and is in no way limiting.

As shown in fig. 1 to 4, the present invention provides an adjustable shock absorber including an outer cylinder 1, an inner cylinder 2, a piston rod 3, a piston head 4; the piston rod 3 is sealed by an end seat 5 and is movably arranged at the first end of the outer cylinder body 1, and the second end of the outer cylinder body 1 is sealed by the second end of the inner cylinder body 2; the inner cylinder body 2 is arranged inside the outer cylinder body 1; the first end of the piston rod 3 is connected with a piston head 4, the piston head 4 is arranged in the inner cylinder body 2, and the piston head 4 divides the inner cylinder body 2 into a first inner cavity 2a close to one side of the piston rod and a second inner cavity 2b close to the second end of the inner cylinder body; the inner cylinder body 2 is provided with at least one group of oil discharge holes 8, the oil discharge holes 8 are correspondingly provided with oil discharge grooves, the inner wall of the outer cylinder body 1 is provided with a groove 7 with a preset length along the axial direction of the outer cylinder body, and a first accommodating cavity 9 and a second accommodating cavity 10 which are communicated with each other are formed between the groove 7 on the inner wall of the outer cylinder body 1 and the outer wall of the inner cylinder body 2; the oil discharge groove is a concave gradual change groove; the piston head 4 is provided with a one-way valve 12 connected with the first accommodating cavity 9, and the one-way valve 12 is blocked when the piston rod 3 is compressed and is opened when the piston rod 3 is stretched; the inner cylinder body further comprises at least one group of straight-line holes, and hydraulic oil is discharged into the second accommodating cavity 10 through the straight-line holes; the second end of the inner cylinder 2 is provided with an adjusting knob 18 which drives the inner cylinder to rotate relative to the outer cylinder.

In one implementation, there are two sets of oil drainage holes 8, and each set of oil drainage holes 8 corresponds to one oil drainage groove. The two ends of the inner cylinder body 2 extend out of the two ends of the groove 7 respectively, and a first accommodating cavity 9 and a second accommodating cavity 10 are formed between the inner cylinder body and the outer cylinder body 1 respectively. The inner cylinder body 2 is designed as an integral body, the cylinder wall of the inner cylinder body 2 separates the second inner cavity 2b from the second containing cavity 10, and the second inner cavity 2b and the second containing cavity 10 are connected through the oil discharge hole 8 and the oil discharge groove.

In an implementation mode, each group of oil drainage holes comprises at least three through holes arranged along the axial direction, each through hole is correspondingly provided with an oil drainage groove, and the length of each groove is greater than the arrangement length of the through holes on the outer wall of the inner cylinder body.

In one implementation, when the piston rod 3 is compressed, the check valve 12 is blocked, and the hydraulic oil in the second inner chamber 2b flows into the groove 7, i.e., the first accommodating chamber 9 and the second accommodating chamber 10, via the oil drain hole 8 and the corresponding oil drain groove in the inner cylinder 2. The cotton energy storage of hydraulic oil bubble in the first chamber 9 that holds 13 energy storages to flow to first inner chamber 2a, because the oil extraction groove is the gradual change groove, the hydraulic oil that flows at a high speed also can produce heat energy because of the friction when the transmission, gives off via outer cylinder body 1, thereby accomplishes the kinetic energy conversion, realizes the function of buffering. When the piston rod 3 is extended, the check valve 12 is opened, and the hydraulic oil of the first accommodation chamber 9 and the second accommodation chamber 10 flows back to the second inner chamber 2 b.

In one implementation, in order to ensure the sealing performance of the adjustable buffer, the end seat 5 is fixedly connected with the end cover 6, the end cover 6 is installed on the outer cylinder body 1 in an interference fit manner, the end seat 5 and the end cover 6 are respectively provided with a rod seal 16 for sealing, the rod seal 16 arranged in the end cover 6 is used for preventing dust, and the rod seal 16 arranged in the end seat 5 is used for preventing hydraulic oil from leaking.

The setting of the gradual change groove that sets up through oil drain hole 8 on the inner cylinder body 2 and corresponding oil drain hole 8 has realized the control to hydraulic oil compression discharge capacity, has realized the control to gradual change groove discharge hydraulic oil towards slot 7 through setting up of adjust knob 18, and then has realized the buffer adjustment to the buffer.

In one implementation, the adjusting knob is fixedly connected with the bottom end of the inner cylinder body through a screw 17.

In one implementation, the first inner cavity 2a is sleeved with a foam energy accumulator 13. In one embodiment, the foam accumulator 13 is a compressed foam accumulator 13.

In an implementation manner, in order to save space and simultaneously ensure a buffering effect, an annular groove is arranged in the end seat 5, the annular groove is a part of the first accommodating cavity 9, and a bubble surface energy accumulator is fixedly nested in the annular groove.

The hydraulic oil is buffered by the arrangement of the foam energy accumulator 13.

In one implementation, the inner cylinder 2 is internally provided with a spring 14, a first end of the spring 14 abuts against the piston head 4, and a second end of the spring 14 abuts against the bottom end of the inner cylinder 2.

The spring 14 is arranged to realize automatic reset after the piston rod 3 is compressed, and the next buffering work is prepared.

In one implementation, the piston rod 3 is provided with a limit snap ring 15, and the outer diameter of the limit snap ring 15 is smaller than the inner diameter of the inner cylinder body 2.

The piston rod 3 is limited and guided by the limiting snap ring 15.

Specific limiting snap ring 15 is used for supporting end seat 5, limits the stroke of piston rod 3, and simultaneously in order to avoid piston rod 3 to interfere with interior cylinder body 2 when moving, results in hydraulic oil jam in first inner chamber 2a, limiting snap ring 15's external diameter is less than interior cylinder body 2's internal diameter for form route 11 when the piston moves about.

In one implementation mode, the check valve 12 includes a through hole disposed on the piston head 4 and communicated with the first inner cavity 2a and the second inner cavity 2b, a steel ball 121 and a steel ball accommodating cavity for accommodating the steel ball 121 are disposed at one end of the through hole close to the second inner cavity 2b, and the diameter of the steel ball 121 is larger than that of the through hole.

In one implementation, the second end of the inner cylinder 2 is provided with a grease inlet port sealing bolt 19 for sealing the grease inlet port.

In order to enhance the sealing effect in one embodiment, a screw gasket 20 is provided which is engaged by the sealing screw 19.

The hydraulic oil is added or replaced conveniently through the oil filling port and the sealing bolt 19.

In one implementation, the end of the outer cylinder 1 is also provided with a tightening bolt 21, the tightening bolt 21 penetrating the outer cylinder 1 and abutting inwardly against the inner cylinder 2 to prevent the inner cylinder 2 from rotating.

The inner cylinder body 2 is limited in working state by the arrangement of the tightening bolt 21, and the stability of the working device of the adjustable buffer is ensured.

In one implementation, the gradual groove cross-sectional area gradually decreases.

In one implementation, the oil drain holes are in one group, the inline holes are in one group, and the oil drain holes and the inline holes are not on the same axis.

The oil discharge hole and the straight discharge hole are not on the same axis, so that the straight discharge hole can discharge oil to the groove when the oil discharge hole discharges oil to the groove through the oil discharge groove.

In one implementation, the oil drain holes are two groups, the straight drain holes are one group, and the two groups of oil drain holes and the one group of straight drain holes are not on the same axis.

In order to increase the adjusting capacity of the adjustable buffer, the two groups of oil discharging holes are arranged, and the two groups of oil discharging holes are not arranged on the same axis, so that the oil discharging holes can discharge oil into the grooves through oil discharging grooves with different hole diameters.

The above-mentioned axis is a straight line along the longitudinal direction of the inner cylinder.

In one implementation, the adjustable bumper includes a first oil drain hole 8a, a first oil drain groove, a second oil drain hole 8b, a second oil drain groove, and a third straight line hole 8 c. The first oil discharge hole 8a, the second oil discharge hole 8b and the third straight line hole 8c are not on the same straight line. The cross-sectional areas of the first oil discharge groove and the second oil discharge groove are gradually reduced to zero along two fifths of the circumferential direction. The starting point and the end point of the first oil drain groove and the second oil drain groove are not on the same straight line along the circumferential axis direction. The inner cylinder body 2 is adjusted to rotate by the adjusting knob 18, so that the fixed liquid discharge pressure oil buffering can be selected, and the gradual liquid discharge pressure oil buffering can also be selected or the combination form of the fixed liquid discharge pressure oil and the gradual liquid discharge pressure oil can be selected.

According to the technical scheme provided by the utility model, the control on the compression displacement of the hydraulic oil is realized through the arrangement of the oil discharge groove on the inner cylinder body 2 and the gradual change groove arranged corresponding to the oil discharge groove, the control on the discharge of the hydraulic oil from the gradual change groove towards the groove 7 is realized through the arrangement of the adjusting knob 18, and further the buffer adjustment of the buffer is realized. The multi-stage buffer adjustment of the adjustable buffer is realized through the combination of the straight-line holes, the oil discharge holes 8 and the oil discharge grooves, and the adaptability of the adjustable buffer is improved.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims. The present invention is described in detail with reference to the accompanying drawings, which are incorporated herein by reference, and the like, and the embodiments of the present invention are not limited thereto.

Claims

1. An adjustable shock absorber, comprising an outer cylinder, an inner cylinder, a piston rod, a piston head;

the piston rod is sealed by an end seat and movably arranged at the first end of the outer cylinder body, and the second end of the outer cylinder body is sealed by the second end of the inner cylinder body;

the inner cylinder body is arranged inside the outer cylinder body;

the first end of the piston rod is connected with a piston head, the piston head is arranged in the inner cylinder body, and the piston head divides the inner cylinder body into a first inner cavity close to one side of the piston rod and a second inner cavity close to the second end of the inner cylinder body;

the inner cylinder body is provided with at least one group of oil discharge holes, the oil discharge holes are correspondingly provided with oil discharge grooves, the inner wall of the outer cylinder body is provided with a groove with a preset length along the axial direction of the outer cylinder body, and a first accommodating cavity and a second accommodating cavity which are communicated with each other are formed between the groove on the inner wall of the outer cylinder body and the outer wall of the inner cylinder body;

the oil discharge groove is a concave gradual change groove;

the piston head is provided with a one-way valve connected with the first accommodating cavity, and the one-way valve is blocked when the piston rod is compressed and is opened when the piston rod is stretched;

the inner cylinder body also comprises at least one group of straight discharge holes, and hydraulic oil is discharged into the second accommodating cavity through the straight discharge holes;

and the second end of the inner cylinder body is provided with an adjusting knob which drives the inner cylinder body to rotate relative to the outer cylinder body.

2. The adjustable bumper of claim 1, wherein a foam accumulator is nested within the first interior cavity.

3. An adjustable damper according to claim 1 wherein a spring is disposed within the inner cylinder, a first end of the spring abutting the piston head and a second end of the spring abutting the inner cylinder bottom end.

4. An adjustable shock absorber according to claim 1, wherein the piston rod is provided with a limit snap ring having an outer diameter smaller than an inner diameter of the inner cylinder.

5. The adjustable shock absorber according to claim 1, wherein the check valve includes a through hole disposed on the piston head and communicating with the first and second inner chambers, a steel ball and a ball receiving chamber for receiving the steel ball are disposed at an end of the through hole adjacent to the second inner chamber, and a diameter of the steel ball is larger than the through hole.

6. An adjustable damper according to claim 1 in which the second end of the inner cylinder is provided with an oil fill port for receiving a sealing bolt of the oil fill port.

7. An adjustable damper according to claim 1 wherein the end of the outer cylinder is further provided with a tightening bolt which extends through the outer cylinder and bears inwardly against the inner cylinder to prevent rotation of the inner cylinder.

8. An adjustable damper according to claim 1, wherein the tapered slot is tapered in cross-sectional area.

9. The adjustable bumper of claim 1, wherein the drain holes are in a set, the inline holes are in a set, and the drain holes and the inline holes are not on the same axis.

10. The adjustable shock absorber of claim 1 wherein the drain holes are in two sets, the straight rows of holes are in one set, and the two sets of drain holes and the straight rows of holes are not on the same axis.