CN218718399U

CN218718399U - Nitrogen spring with shock-absorbing function

Info

Publication number: CN218718399U
Application number: CN202222977208.1U
Authority: CN
Inventors: 吴柯东; 汤志良
Original assignee: Changzhou Tengkai Precision Machinery Co ltd
Current assignee: Changzhou Tengkai Precision Machinery Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-24
Anticipated expiration: 2032-11-07

Abstract

The utility model relates to a nitrogen gas spring with shock-absorbing function belongs to nitrogen gas spring technical field, including the nitrogen gas spring cylinder body, the inner wall of nitrogen gas spring cylinder body is close to top edge fixedly connected with and goes up the endotheca. The utility model discloses, the striking head can drive the inside slip of cushion piston at interior pressure cylinder after receiving the striking and compress reset spring, the inside hydraulic drive oil of interior pressure cylinder is arranged to the top that the clearance of piston rod and interior pressure cylinder is in from the oilhole backward flow at interior pressure cylinder top to cushion piston from the bottom oilhole, reset spring shrink and hydraulic drive oil can effectually play buffering shock attenuation effect at the transmission in-process, thereby slow down the collision between object and nitrogen spring piston rod, make whole process of pushing down more steady, improve nitrogen spring's life.

Description

Nitrogen spring with shock-absorbing function

Technical Field

The utility model relates to a nitrogen gas spring technical field especially relates to a nitrogen gas spring with shock-absorbing function.

Background

The nitrogen spring 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 (one million times), gentle elasticity curve, no need of pre-tightening and the like, has the performance of simplifying the design and manufacture of a die and facilitating the installation and adjustment of the die, and is difficult to complete by conventional elastic components such as metal springs, rubber, air cushions and the like.

And its piston rod often collides with the object when using current nitrogen gas spring, and the speed is usually very fast when colliding with the object, does not have buffering protection machanism, such condition all has great loss of use to nitrogen gas spring's piston rod and nitrogen gas spring body, influences nitrogen gas spring's life, the nitrogen gas spring who now provides a shock-absorbing function can slow down the collision between object and nitrogen gas spring piston rod, make whole process of pushing down more steady, improve nitrogen gas spring's life.

SUMMERY OF THE UTILITY MODEL

The utility model provides a nitrogen gas spring with shock-absorbing function has solved the problem that above-mentioned background art provided.

The utility model provides a scheme as follows of above-mentioned technical problem: the utility model provides a nitrogen spring with shock-absorbing function, includes the nitrogen spring cylinder body, the inner wall of nitrogen spring cylinder body is close to top edge fixedly connected with and goes up the endotheca, the inner wall sliding connection who goes up the endotheca has the piston rod, the outer wall of piston rod is close to bottom edge fixedly connected with motion piston, the top threaded connection of piston rod has the closing cap board, the top through connection of closing cap board has the pressure-bearing pole, the top fixedly connected with impact head of pressure-bearing pole, the bottom fixedly connected with buffer piston of pressure-bearing pole, buffer piston's bottom fixedly connected with reset spring, the dashpot has been seted up at the top of piston rod, the inner wall bottom fixed mounting of dashpot has the internal pressure jar, the oilhole has evenly been seted up to the outer wall of internal pressure jar, the top of buffer piston is close to right side edge through connection and has the check valve.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the top of the sealing cover plate is provided with a through hole matched with the pressure bearing rod, and the inner wall of the through hole is in sliding connection with the pressure bearing rod, so that the pressure bearing rod can transmit the internal extrusion buffering piston into the piston rod.

Furthermore, the outer wall of the impact head is sleeved with a rubber sleeve, so that the impact head can be protected.

Furthermore, the diameter of the inner wall of the inner pressure cylinder is consistent with that of the buffer piston, so that the buffer piston can be attached to the inner wall of the inner pressure cylinder to slide, and hydraulic transmission oil in the inner pressure cylinder is extruded.

Further, the liquid at the check valve can only flow from the upper side to the lower side, so that the buffer piston can press the hydraulic transmission oil in the internal cylinder to discharge the hydraulic transmission oil from the oil hole to the internal cylinder.

Furthermore, a gap is reserved between the inner pressure cylinder and the buffer groove on the inner wall of the piston rod.

Furthermore, hydraulic transmission oil is injected into a buffer groove of the piston rod.

Further, a thread groove is formed in the top of the inner wall of the piston rod buffer groove, and a thread cylinder matched with the thread groove is fixedly installed at the position, close to the edge, of the bottom of the sealing cover plate.

The utility model provides a nitrogen gas spring with shock-absorbing function has following advantage:

the impact head can drive the buffer piston to slide in the inner pressure cylinder after being impacted to compress the reset spring, hydraulic transmission oil in the inner pressure cylinder is discharged to the top of the piston rod and the inner pressure cylinder from the oil hole at the bottom, and the gap between the piston rod and the inner pressure cylinder is positioned at the top of the buffer piston and flows back from the oil hole at the top of the inner pressure cylinder, the reset spring shrinks and the hydraulic transmission oil can effectively play a buffering and damping effect in the transmission process, so that the collision between an object and a nitrogen spring piston rod is reduced, the whole pressing process is more stable, and the service life of the nitrogen spring is prolonged.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural view of a nitrogen gas spring with a damping function according to an embodiment of the present invention;

fig. 2 is a front view of a nitrogen gas spring with a damping function according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a rubber sleeve in a nitrogen gas spring with a damping function according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a nitrogen gas spring with a damping function according to an embodiment of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. a nitrogen spring cylinder; 2. an inner sleeve is arranged; 3. a piston rod; 4. a moving piston; 5. sealing the cover plate; 6. a pressure-bearing rod; 7. a striking head; 8. a buffer piston; 9. a return spring; 10. an inner pressure cylinder; 11. an oil hole; 12. a check valve; 13. a rubber sleeve.

Detailed Description

The principles and features of the present invention are described below in conjunction with the accompanying fig. 1-4, the examples given are intended to illustrate the present invention and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-4, a nitrogen spring with shock-absorbing function, including nitrogen spring cylinder body 1, the inner wall of nitrogen spring cylinder body 1 is close to top edge fixedly connected with upper inner sleeve 2, the inner wall sliding connection of upper inner sleeve 2 has piston rod 3, the outer wall of piston rod 3 is close to bottom edge fixedly connected with motion piston 4, the top threaded connection of piston rod 3 has gland plate 5, the top through connection of gland plate 5 has pressure-bearing rod 6, the top fixedly connected with impact head 7 of pressure-bearing rod 6, the bottom fixedly connected with buffer piston 8 of pressure-bearing rod 6, the bottom fixedly connected with reset spring 9 of buffer piston 8, the dashpot has been seted up at the top of piston rod 3, the inner wall bottom fixed mounting of dashpot has internal pressure cylinder 10, oilhole 11 has evenly been seted up to the outer wall of internal pressure cylinder 10, the top of buffer piston 8 is close to right side edge through connection and has check valve 12.

Preferably, the top of the cover plate 5 is provided with a through hole matched with the pressure-bearing rod 6, and the inner wall of the through hole is in sliding connection with the pressure-bearing rod 6, so that the pressure-bearing rod 6 can be transmitted into the piston rod 3 to extrude the buffer piston 8.

Preferably, the outer wall of the impact head 7 is sleeved with a rubber sleeve 13, so that the impact head 7 can be protected.

Preferably, the diameter of the inner wall of the inner cylinder 10 is identical to the diameter of the damping piston 8, so that the damping piston 8 can slide against the inner wall of the inner cylinder 10 to press the hydraulic oil in the inner cylinder 10.

Preferably, the fluid in the check valve 12 can flow only from the upper side to the lower side, so that the cushion piston 8 can press the hydraulic transmission oil in the internal cylinder 10 to discharge the hydraulic transmission oil from the oil hole 11 to the internal cylinder 10.

Preferably, the inner cylinder 10 is spaced apart from the buffer groove in the inner wall of the piston rod 3.

Preferably, the buffer groove of the piston rod 3 is filled with hydraulic transmission oil.

Preferably, the thread groove is formed in the top of the inner wall of the buffer groove of the piston rod 3, and the thread cylinder matched with the thread groove is fixedly mounted at the position, close to the edge, of the bottom of the cover sealing plate 5.

The utility model discloses a concrete theory of operation and application method do: the impact head 7 can drive the piston 6 to be transmitted into the piston rod 3 after being impacted, so that the buffer piston 8 can slide in the inner pressure cylinder 10 to compress the return spring 9, hydraulic transmission oil in the inner pressure cylinder 10 is discharged to a gap between the piston rod 3 and the inner pressure cylinder 10 from the bottom oil hole 11 and flows back to the top of the buffer piston 8 from the oil hole 11 in the top of the inner pressure cylinder 10, when the return spring 9 is extruded, the piston rod 3 can synchronously drive the moving piston 4 to slide in the nitrogen spring cylinder body 1 to extrude nitrogen, when the piston rod is separated from an object, the piston rod 4 can drive the piston 3 to reset, the piston 9 can drive the piston 8 to reset, and the hydraulic transmission oil in the top of the piston 8 can flow to the bottom of the piston 8 from the position 12.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a nitrogen gas spring with shock-absorbing function, includes nitrogen gas spring cylinder body (1), its characterized in that: the inner wall of nitrogen gas spring cylinder body (1) is close to last endotheca (2) of top edge fixedly connected with, the inner wall sliding connection who goes up endotheca (2) has piston rod (3), the outer wall of piston rod (3) is close to bottom edge fixedly connected with motion piston (4), the top threaded connection of piston rod (3) has closing cap board (5), the top through connection of closing cap board (5) has bearing rod (6), the top fixedly connected with impact head (7) of bearing rod (6), the bottom fixedly connected with buffer piston (8) of bearing rod (6), the bottom fixedly connected with reset spring (9) of buffer piston (8), the dashpot has been seted up at the top of piston rod (3), the inner wall bottom fixed mounting of dashpot has interior pressure cylinder (10), oilhole (11) have evenly been seted up to the outer wall of interior pressure cylinder (10), the top of buffer piston (8) is close to right side edge through connection and has check valve (12).

2. The nitrogen gas spring with the damping function as claimed in claim 1, wherein a through hole matched with the pressure bearing rod (6) is formed in the top of the cover plate (5), and the inner wall of the through hole is slidably connected with the pressure bearing rod (6).

3. Nitrogen gas spring with damping function according to claim 1, characterized in that the outer wall of the impact head (7) is sheathed with a rubber sleeve (13).

4. A nitrogen gas spring with a shock-absorbing function according to claim 1, characterized in that the diameter of the inner wall of said inner pressure cylinder (10) coincides with the diameter of the cushion piston (8).

5. Nitrogen gas spring with damping function according to claim 1, characterized in that the liquid at the non-return valve (12) can flow only from the upper side to the lower side.

6. The nitrogen gas spring with a shock absorbing function according to claim 1, wherein the inner cylinder (10) is spaced from a buffer groove of an inner wall of the piston rod (3).

7. The nitrogen gas spring with a shock absorbing function according to claim 1, wherein a buffer groove of the piston rod (3) is filled with hydraulic transmission oil.

8. The nitrogen gas spring with the damping function as claimed in claim 1, wherein a thread groove is formed in the top of the inner wall of the buffer groove of the piston rod (3), and a thread cylinder matched with the thread groove is fixedly installed at the bottom of the cover plate (5) close to the edge.