CN217177249U

CN217177249U - Adjustable slow rebound nitrogen spring

Info

Publication number: CN217177249U
Application number: CN202220701640.5U
Authority: CN
Inventors: 余文德; 兰贞; 伍祖锋
Original assignee: Jiangxi Datong Precision Hardware Manufacturing Co ltd
Current assignee: Jiangxi Datong Precision Hardware Manufacturing Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-08-12
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses an adjustable slow resilience nitrogen spring, the hydraulic ram comprises a cylinder, the plunger rod, center lid and center post, the piston portion sliding connection of plunger rod is in the cylinder, be cavity down under lieing in the piston portion in the cylinder, it has inert gas to fill in the cavity of resorption, fixedly connected with center lid in the mounting groove of piston portion, the first inflation valve of fixedly connected with is covered at the center, the middle part position of center lid is provided with the air flue and the installation cavity that sets up with the air flue intercommunication, fixedly connected with obturator in the installation cavity, it is provided with the regulation way to correspond the air flue on the obturator, with being provided with of regulation way intercommunication and adjusting the cavity, the bottom of center post is passed the regulation hole and is lain in adjusting the cavity, and threaded connection between center post and the regulation hole, the gas seam has between center post and the adjusting the cavity. The utility model relates to a nitrogen spring technical field, its characteristics that have adjustable rebound time.

Description

Adjustable slow rebound nitrogen spring

Technical Field

The utility model relates to a nitrogen spring technical field, specific adjustable slow resilience nitrogen spring that says so.

Background

The nitrogen spring special for the die is a novel elastic component taking high-pressure nitrogen as a working medium, has small volume, large elasticity, long stroke, stable work, precise manufacture, long service life, gentle elasticity curve, no need of pre-tightening and the like, has the work which is difficult to finish by conventional elastic components such as metal springs, rubber, air cushions and the like, simplifies the design and manufacture of the die, facilitates the installation and adjustment of the die, prolongs the service life of the die, ensures the stability of the product quality, can also be designed into a nitrogen spring system to participate in the work as a part of the die, can conveniently realize the constant pressure and the delayed action in the system, and is a new generation of optimal elastic component with flexible performance.

And it is fixed during the time of rebounding of present nitrogen spring, consequently leads to can not satisfy different processing demands, when needs satisfy the working demand, only can change nitrogen spring's type, consequently uses very inconveniently.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model aims at providing a nitrogen gas spring of adjustable resilience time.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the adjustable slow rebound nitrogen spring comprises a cylinder barrel, a plunger rod, a central cover and a central column, wherein the bottom of the plunger rod is provided with a piston part, the piston part is provided with an installation groove, an upper chamber is arranged in the plunger rod and communicated with the installation groove, and the top of the plunger rod is provided with an adjusting hole communicated with the upper chamber;

piston portion sliding connection be in the cylinder, be located in the cylinder below the piston portion for lower cavity, lower cavity intussuseption is filled with inert gas, fixedly connected with in the mounting groove center lid, the first inflation valve of fixedly connected with is covered at the center, the middle part position of center lid be provided with the air flue and with the installation cavity that the air flue intercommunication set up, the installation cavity with go up cavity intercommunication, fixedly connected with obturator in the installation cavity, it is provided with the regulation way to correspond on the obturator the air flue, on the obturator with the regulation way is provided with adjusts the cavity, the bottom of center post is passed the regulation hole and is located adjust the cavity indoor, just center post with threaded connection between the regulation hole, center post with adjust the cavity between have the gas seam.

In some embodiments, a wesson seal is fitted and mounted on the piston portion, a first guide ring is fitted and mounted on the piston portion above the wesson seal, and the wesson seal and the first guide ring are both in contact with the inner wall of the cylinder barrel.

In some of these implementations, a first O-ring is fitted on the center cover, and the first O-ring contacts with the inner wall of the mounting groove.

In some of these implementations, a second O-ring is fixedly attached to the interior of the adjustment bore and in contact with the surface of the center post

In some of these embodiments, a guide sleeve is fixedly connected to the inner wall of the cylinder near the top thereof, the plunger rod passes through the guide sleeve, the inner wall of the guide sleeve is fixedly connected with a main sealing ring, the inner wall of the guide sleeve is fixedly connected with a second guide ring which is positioned at the upper part of the main sealing ring, an inner dustproof ring is fixedly connected to the inner wall of the guide sleeve and positioned at the upper part of the second guide ring, the main sealing ring, the second guide ring and the inner dustproof ring are all in contact with the outer wall of the plunger rod, the outer dust ring is fixedly connected between the guide sleeve and the top area of the cylinder barrel, a snap spring is fixedly connected between the guide sleeve and the cylinder barrel and positioned at the bottom of the outer dust ring, and a third O-shaped ring is arranged between the guide sleeve and the bottom area of the cylinder barrel, and a check ring is arranged between the guide sleeve and the cylinder barrel and positioned on the third O-shaped ring.

In some of these implementations, the top end of the center post is provided with an adjustment hole location.

In some implementations, an inflation channel is arranged at the bottom of the cylinder barrel, a second inflation valve is fixedly connected inside the inflation channel, and a plug screw is connected to the end of the inflation channel in a threaded manner.

The utility model has the advantages that: can make it reciprocate through rotating the center post, make the bottom of center post then to adjust the gas seam size of adjusting the cavity to this adjusts the gas flow velocity between upper chamber and the lower cavity, alright adjust the resilience time of plunger rod like this, thereby better satisfying the user demand.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the center cover of the present invention;

FIG. 3 is a schematic view of the structure of the middle cylinder of the present invention;

FIG. 4 is a schematic structural view of the center post rod of the present invention;

FIG. 5 is a schematic view of the center post structure of the present invention;

FIG. 6 is a schematic view of the structure of the middle blocking block of the present invention;

fig. 7 is a schematic view of the structure of the middle guide sleeve of the present invention.

In the figure: 1 cylinder barrel, 2 plunger rods, 3 center covers, 4 center columns, 5 mounting grooves, 6 upper chambers, 7 adjusting holes, 8 lower chambers, 9 first inflation valves, 10 air passages, 11 mounting cavities, 12 blocking blocks, 13 adjusting passages, 14 adjusting chambers, 15 Weishi sealing rings, 16 first guide rings, 17 first O-shaped rings, 18 second O-shaped rings, 19 guide sleeves, 20 main seal rings, 21 second guide rings, 22 inner dust-proof rings, 23 outer dust-proof rings, 24 snap springs, 25 adjusting hole positions, 26 inflation passages, 27 second inflation valves, 28 screw plugs, 29 third O-shaped rings and 30 check rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the adjustable slow rebound nitrogen spring comprises a cylinder barrel 1, a plunger rod 2, a center cover 3 and a center column 4, wherein the bottom of the plunger rod 2 is provided with a piston part, the piston part is provided with an installation groove 5, an upper chamber 6 is arranged in the plunger rod 2 and communicated with the installation groove 5, and the top of the plunger rod 2 is provided with an adjusting hole 7 communicated with the upper chamber 6;

the piston part is connected in the cylinder barrel 1 in a sliding manner, a lower chamber 8 is arranged below the piston part in the cylinder barrel 1, inert gas is filled in the lower chamber 8, the inert gas adopts nitrogen, a center cover 3 is fixedly connected in the installation groove 5, a first inflation valve 9 is fixedly connected on the center cover 3, an air passage 10 and an installation cavity 11 communicated with the air passage 10 are arranged in the middle of the center cover 3, the installation cavity 11 is communicated with the upper chamber 6, a blocking block 12 is fixedly connected in the installation cavity 11, an adjusting channel 13 is arranged on the blocking block 12 corresponding to the air passage 10, an adjusting chamber 14 is arranged on the blocking block 12 and communicated with the adjusting channel 13, the bottom end of the center column 4 penetrates through the adjusting hole 7 and is positioned in the adjusting chamber 14, the center column 4 is in threaded connection with the adjusting hole 7, an air gap is arranged between the center column 4 and the adjusting chamber 14, so that when the plunger rod 2 descends under external force, piston portion just moves down in cylinder 1, the inside nitrogen gas of lower chamber 8 alright pass through inflation valve and gas gap entering go up in the chamber 6, after the applied external force is relieved, because of the pressure difference, make plunger rod 2 shift up, and can make it reciprocate through rotating center post 4, then make center post 4's bottom adjust the gas gap size of regulation chamber 14, with this adjust the gas flow velocity between upper chamber 6 and the lower chamber 8, alright adjust the resilience time of plunger rod 2 like this, thereby better satisfying the user demand.

In some of the embodiments, the piston portion is provided with the weishi seal ring 15 in an embedded manner, the piston portion is provided with the first guide ring 16 in an embedded manner at the upper part of the weishi seal ring 15, the weishi seal ring 15 and the first guide ring 16 are both contacted with the inner wall of the cylinder barrel 1, the central cover 3 is provided with the first O-ring 17 in an embedded manner, the first O-ring 17 is contacted with the inner wall of the mounting groove 5, so that the piston portion and the cylinder barrel 1 have a sealing effect, meanwhile, the inside of the adjusting hole 7 is fixedly connected with the second O-ring 18, and the second O-ring 18 is contacted with the surface of the central column 4, so that the sealing between the central column 4 and the adjusting hole 7 is realized.

In some of the implementations, a guide sleeve 19 is fixedly connected to the inner wall of the cylinder 1 near the top thereof, the plunger rod 2 passes through the guide sleeve 19, a main seal ring 20 is fixedly connected to the inner wall of the guide sleeve 19, a second guide ring 21 is fixedly connected to the inner wall of the guide sleeve 19 and positioned above the main seal ring 20, an inner dust ring 22 is fixedly connected to the inner wall of the guide sleeve 19 and positioned above the second guide ring 21, the main seal ring 20, the second guide ring 21 and the inner dust ring 22 are all in contact with the outer wall of the plunger rod 2, an outer dust ring 23 is fixedly connected between the guide sleeve 19 and the top area of the cylinder 1, a snap spring 24 is fixedly connected between the guide sleeve 19 and the cylinder 1 and positioned at the bottom of the outer dust ring 23, the fixing stability between the guide sleeve 19 and the cylinder 1 can be ensured by the snap spring 24, a third O-ring 29 is arranged between the guide sleeve 19 and the bottom area of the cylinder 1, a retainer ring 30 is arranged between the guide sleeve 19 and the cylinder 1 and positioned on the third O-ring 29, in this way, the guide sleeve 19 seals the cylinder tube 1, and the sealing effect is excellent.

In some of these embodiments, the top end of the central post 4 is provided with an adjustment hole 27, and a tool can be inserted into the adjustment hole 27 to rotate the central post 4.

In some embodiments, the bottom of the cylinder 1 is provided with an inflation channel 26, a second inflation valve 27 is fixedly connected inside the inflation channel 26, and the end of the inflation channel 26 is screwed with a screw plug 28, so that nitrogen can be flushed into the cylinder 1 through the inflation channel 26.

The utility model discloses a theory of operation is: when the piston is used, the piston part moves downwards in the cylinder barrel 1 under the action of external force, nitrogen in the lower chamber 8 enters the upper chamber 6 through the first inflation valve 9 and the air passage 10 and the air seam in the downward moving process of the piston part, and after the external force of the piston is contacted, the nitrogen in the upper chamber 6 enters the lower chamber 8 through the air seam, so that the plunger rod 2 moves upwards slowly;

when the rebound time of the piston rod 2 needs to be adjusted, the central column 4 can be rotated to move up or down, so that the size of an air gap between the bottom end of the central column 4 and the adjusting chamber 14 can be adjusted.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Adjustable slow resilience nitrogen spring, its characterized in that: the plunger rod comprises a cylinder barrel (1), a plunger rod (2), a central cover (3) and a central column (4), wherein the bottom of the plunger rod (2) is provided with a piston part, the piston part is provided with an installation groove (5), an upper chamber (6) is arranged in the plunger rod (2) and communicated with the installation groove (5), and the top of the plunger rod (2) is communicated with the upper chamber (6) and is provided with an adjusting hole (7);

the piston part is connected in the cylinder barrel (1) in a sliding manner, a lower chamber (8) is arranged below the piston part in the cylinder barrel (1), inert gas is filled in the lower chamber (8), the mounting groove (5) is internally and fixedly connected with the center cover (3), the center cover (3) is fixedly connected with a first inflation valve (9), the middle position of the center cover (3) is provided with an air passage (10) and a mounting cavity (11) communicated with the air passage (10), the mounting cavity (11) is communicated with the upper chamber (6), the mounting cavity (11) is internally and fixedly connected with a blocking block (12), the blocking block (12) is provided with an adjusting channel (13) corresponding to the air passage (10), the blocking block (12) is provided with an adjusting chamber (14) communicated with the adjusting channel (13), and the bottom end of the center column (4) penetrates through the adjusting hole (7) and is positioned in the adjusting chamber (14), the central column (4) is in threaded connection with the adjusting hole (7), and an air gap is formed between the central column (4) and the adjusting cavity (14).

2. The adjustable slow rebound nitrogen spring as set forth in claim 1, wherein: the piston part is provided with a Weishi seal ring (15) in an embedded mode, the piston part is positioned at the upper part of the Weishi seal ring (15) in an embedded mode and provided with a first guide ring (16), and the Weishi seal ring (15) and the first guide ring (16) are both in contact with the inner wall of the cylinder barrel (1).

3. The adjustable slow rebound nitrogen spring as set forth in claim 1, wherein: and a first O-shaped ring (17) is embedded and installed on the central cover (3), and the first O-shaped ring (17) is in contact with the inner wall of the installation groove (5).

4. The adjustable slow rebound nitrogen spring as set forth in claim 1, wherein: and a second O-shaped ring (18) is fixedly connected inside the adjusting hole (7), and the second O-shaped ring (18) is in surface contact with the central column (4).

5. The adjustable slow rebound nitrogen spring as set forth in claim 1, wherein: a guide sleeve (19) is fixedly connected to the inner wall of the cylinder barrel (1) close to the top of the cylinder barrel, the plunger rod (2) penetrates through the guide sleeve (19), a main sealing ring (20) is fixedly connected to the inner wall of the guide sleeve (19), a second guide ring (21) is fixedly connected to the upper portion of the main sealing ring (20) and is arranged on the inner wall of the guide sleeve (19), an inner dust ring (22) is fixedly connected to the upper portion of the second guide ring (21) and is arranged on the inner wall of the guide sleeve (19), the main sealing ring (20), the second guide ring (21) and the inner dust ring (22) are all in contact with the outer wall of the plunger rod (2), an outer dust ring (23) is fixedly connected between the guide sleeve (19) and the top area of the cylinder barrel (1), and a clamp spring (24) is fixedly connected to the bottom of the outer dust ring (23) and is arranged between the guide sleeve (19) and the cylinder barrel (1), a third O-shaped ring (29) is arranged between the guide sleeve (19) and the bottom area of the cylinder barrel (1), and a check ring (30) is arranged between the guide sleeve (19) and the cylinder barrel (1) and positioned on the third O-shaped ring (29).

6. The adjustable slow rebound nitrogen spring as set forth in claim 1, wherein: the top end of the central column (4) is provided with an adjusting hole position (25).

7. The adjustable slow rebound nitrogen spring as set forth in claim 1, wherein: the bottom of the cylinder barrel (1) is provided with an inflation channel (26), a second inflation valve (27) is fixedly connected inside the inflation channel (26), and the end part of the inflation channel (26) is in threaded connection with a plug screw (28).