CN212839111U

CN212839111U - Extension damper

Info

Publication number: CN212839111U
Application number: CN202021006894.2U
Authority: CN
Inventors: 董树平; 张跃春
Original assignee: Nanjing Jiangkai Auto Parts Co ltd
Current assignee: Nanjing Jiangkai Auto Parts Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-03-30
Anticipated expiration: 2030-06-04

Abstract

The utility model belongs to the bumper shock absorber field especially extends attenuator, including pipe end shell and piston rod shell, the one end of pipe end shell sets up for the opening, and piston rod shell movable mounting is in the pipe end shell, and outside the one end of piston rod shell extended to the pipe end shell, install the cylinder in the pipe end shell, piston rod shell activity cup joints on the cylinder, movable mounting has the piston in the cylinder, and the skeleton packing ring that is located the cylinder is installed to one side of piston, and the skeleton packing ring is kept away from one side of piston and is installed the skeleton sealing washer, one side fixed mounting that the skeleton packing ring was kept away from to the skeleton sealing washer has the piston rod, and the piston rod is installed in the piston rod shell, the utility model discloses extension bumper shock absorber life, damping force is big, and dynamic response is fast, and it can not too big.

Description

Extension damper

Technical Field

The utility model relates to a attenuator technical field especially relates to extend attenuator.

Background

The damper is a device for providing motion resistance and consuming motion energy, energy absorption and shock absorption by damping are not new technologies, and various dampers (or shock absorbers) are applied to industries such as aerospace, aviation, war industry, firearms, automobiles and the like to absorb and dissipate energy, so that the damper is a vibration control device sensitive to speed;

the hydraulic damper is mainly suitable for the vibration resistance of pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants and the like. The system is often used for controlling the piping vibration of impulsive fluid vibration (such as main valve rapid closing, safety valve discharge, water hammer, broken pipe and other impact excitation) and earthquake excitation; the liquid damper cannot effectively control the vibration of low amplitude high frequency or high amplitude low frequency;

the piston damping hole is fixed, high-speed damping and low-speed damping are not considered, the surfaces of the cylinder barrel and the piston rod are not protected, the cylinder barrel and the piston rod are easy to rust after colliding, and the service life of the damper is influenced after the piston rod is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the shortcoming that exists among the prior art, and the extension attenuator that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

extend the attenuator, including pipe end shell and piston rod shell, the one end of pipe end shell sets up for the opening, and piston rod shell movable mounting is in the pipe end shell, and outside the one end of piston rod shell extended to the pipe end shell, install the cylinder in the pipe end shell, piston rod shell activity cup joints on the cylinder, movable mounting has the piston in the cylinder, and the skeleton packing ring that is located the cylinder is installed to one side of piston, and the skeleton packing ring is kept away from one side of piston and is installed the skeleton sealing washer, one side fixed mounting that the skeleton packing ring was kept away from to the skeleton sealing washer has the piston rod, and the piston rod is installed.

Preferably, one end of the piston rod, which is far away from the framework sealing ring, is fixedly provided with a rod end hanging ring, and the rod end hanging ring is sleeved with a shaft sleeve.

Preferably, one end of the cylinder barrel, which is far away from the piston rod shell, is provided with a pipe end hanging ring, and the pipe end hanging ring is sleeved with a rubber sleeve.

Preferably, the piston is a one-way damping piston formed by combining a piston guide mechanism, a one-way damping mechanism and a fixed locking mechanism.

Preferably, the one-way damping mechanism comprises a valve plate, an O-shaped ring and a valve plate gasket which are sleeved on the piston rod, and the valve plate, the O-shaped ring and the valve plate gasket are sequentially arranged from top to bottom.

Preferably, the fixed locking mechanism comprises a locking gasket, a bolt and a nut, the locking gasket is sleeved on the bolt, the bolt is fixedly connected with the piston rod, the nut is sleeved on the bolt in a threaded manner, the nut is in contact with the locking gasket, and the locking gasket is in contact with the valve plate gasket.

Preferably, the piston guide mechanism comprises a piston gasket, the piston gasket is sleeved on the piston rod, and the piston gasket is in contact with one side, far away from the O-shaped ring, of the valve plate.

The utility model discloses in, extend the attenuator, extension attenuator life, the damping force is big, and dynamic response is fast, and it can not be too big to compromise high-speed damping under the low-speed circumstances that has the damping force.

Drawings

Fig. 1 is a schematic structural view of the extension damper of the present invention;

fig. 2 is a schematic view of a piston structure of the extension damper according to the present invention.

In the figure: 1 rod end lifting ring, 2 framework sealing rings, 3 pistons, 3-1 valve plates, 3-2O-shaped rings, 3-3 valve plate gaskets, 3-4 locking gaskets, 3-5 nuts, 3-6 bolts, 3-7 piston gaskets, 4 piston rod shells, 5 piston rods, 6 framework gaskets, 7 pipe end shells, 8 cylinder barrels and 9 pipe end lifting 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.

Referring to fig. 1-2, extend attenuator, including pipe end shell 7 and piston rod shell 4, the one end of pipe end shell 7 sets up for the opening, piston rod shell 4 movable mounting is in pipe end shell 7, and the one end of piston rod shell 4 extends to outside pipe end shell 7, install cylinder 8 in the pipe end shell 7, piston rod shell 4 activity cup joints on cylinder 8, movable mounting has piston 3 in the cylinder 8, skeleton packing ring 6 that is located cylinder 8 is installed to one side of piston 3, skeleton packing ring 6 keeps away from one side of piston 3 and installs skeleton sealing washer 2, skeleton packing ring 2 keeps away from one side fixed mounting that skeleton packing ring 6 has piston rod 5, piston rod 5 installs in piston rod shell 4.

The utility model discloses in, the one end fixed mounting that skeleton seal circle 2 was kept away from to piston rod 5 has rod end rings 1, and has cup jointed the axle sleeve on the rod end rings 1.

The utility model discloses in, the one end that piston rod shell 4 was kept away from to cylinder 8 is installed pipe end rings 9, and has cup jointed the rubber sleeve on the pipe end rings 9.

The utility model discloses in, piston 3 is the one-way damping piston that is formed by piston guiding mechanism, one-way damping mechanism, the combination of fixed locking mechanism.

The utility model discloses in, one-way damping mechanism includes valve block 3-1, O type circle 3-2, valve block packing ring 3-3 that cup joints on piston rod 5, and valve block 3-1, O type circle 3-2, valve block packing ring 3-3 from last setting gradually down.

The utility model discloses in, fixed locking mechanism includes lock washer 3-4, bolt 3-6 and nut 3-5, and lock washer 3-4 cup joints on bolt 3-6, and bolt 3-6 and piston rod 5 fixed connection, and nut 3-5 screw thread cup joints on bolt 3-6, and nut 3-5 and lock washer 3-4 contact, and lock washer 3-4 and valve block packing ring 3-3 contact.

The utility model discloses in, piston guiding mechanism includes piston gasket 3-7, and piston gasket 3-7 cup joints on piston rod 5, and piston gasket 3-7 and valve block 3-1 keep away from the one side contact of O type circle 3-2.

In the utility model, the pipe end shell 7 and the piston rod shell 4 play the role of protection and dust prevention, the shaft sleeve and the rubber sleeve are arranged on the rod end hanging ring 1 and the pipe end hanging ring 9, and the flexible connection plays the role of instantaneous buffer; the framework sealing ring 2 is used for guiding and sealing the piston rod 5, and the framework gasket 6 is used for protecting the framework sealing ring 2 from being damaged when the framework sealing ring is excessively stretched; the piston 3 is a one-way damping piston formed by combining a piston guide mechanism, a one-way damping mechanism and a fixed locking mechanism, the piston guide in the piston guide mechanism is responsible for ensuring that the piston can move in parallel in a cylinder when a damper stretches, a piston gasket 3-7 is used for supporting the piston guide, a copper gasket in the one-way damping mechanism ensures that an O-shaped ring 3-2 is always in a flat state and can also accelerate the movement and sealing of the O-shaped ring 3-2, the copper material can also effectively protect the cylinder from being scratched, the gasket is used for supporting, the supporting guide mechanism and the one-way damping mechanism are formed by combining the O-shaped ring 3-2, a valve plate gasket 3-3 and a valve plate 3-1, the O-shaped ring 3-2 moves upwards during compression, a gap is formed between the O-shaped ring 3-2 and the valve plate gasket 3-3, and hydraulic, the piston does not generate resistance when compressed; when the valve is stretched, the O-shaped ring 3-2 descends to seal the gap between the resistance gasket and the cylinder 8, and hydraulic oil can only push the valve plate 3-1 to flow into the lower cavity through the small hole on the resistance gasket; the damping force is adjusted by adjusting the number of the valve plates 3-1 and the thickness of the valve plates 3-1, the damping force can flow through gaps between the slotted valve plates 3-1 at low speed, the damping force is increased along with the change of the speed, hydraulic oil pushes the valve plates 3-1 away, the opening and closing size of the valve plates 3-1 is in direct proportion to the damping force, and the instant locking and equipment damage caused by the sudden increase of the damping force due to the over-high speed of the traditional damper during working are avoided; the locking washer 3-4 is used for protecting the valve plate 3-1 from untight sealing caused by the uneven end surface of the nut when the nut 3-5 is locked.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The extension damper comprises a pipe end shell (7) and a piston rod shell (4), and is characterized in that one end of the pipe end shell (7) is arranged in an opening, the piston rod shell (4) is movably arranged in the pipe end shell (7), one end of the piston rod shell (4) extends out of the pipe end shell (7), a cylinder (8) is arranged in the pipe end shell (7), the piston rod shell (4) is movably sleeved on the cylinder (8), a piston (3) is movably arranged in the cylinder (8), a framework gasket (6) positioned in the cylinder (8) is arranged on one side of the piston (3), a framework sealing ring (2) is arranged on one side, far away from the piston (3), of the framework gasket (6), a piston rod (5) is fixedly arranged on one side, far away from the framework gasket (6), of the framework sealing ring (2), and the piston rod (5) is arranged in the piston rod shell (4, the piston (3) is a one-way damping piston formed by combining a piston guide mechanism, a one-way damping mechanism and a fixed locking mechanism, the one-way damping mechanism comprises a valve block (3-1), an O-shaped ring (3-2) and a valve block gasket (3-3) which are sleeved on a piston rod (5), the valve block (3-1), the O-shaped ring (3-2) and the valve block gasket (3-3) are sequentially arranged from top to bottom, the fixed locking mechanism comprises a locking gasket (3-4), a bolt (3-6) and a nut (3-5), the locking gasket (3-4) is sleeved on the bolt (3-6), the bolt (3-6) is fixedly connected with the piston rod (5), the nut (3-5) is sleeved on the bolt (3-6) in a threaded manner, and the nut (3-5) is contacted with the locking gasket (3-4), the locking gasket (3-4) is in contact with the valve plate gasket (3-3), the piston guide mechanism comprises a piston gasket (3-7), the piston gasket (3-7) is sleeved on the piston rod (5), and the piston gasket (3-7) is in contact with one side, far away from the O-shaped ring (3-2), of the valve plate (3-1).

2. The extension damper as claimed in claim 1, wherein the end of the piston rod (5) far away from the skeleton sealing ring (2) is fixedly provided with a rod end suspension ring (1), and the rod end suspension ring (1) is sleeved with a shaft sleeve.

3. The extension damper according to claim 1, characterized in that a pipe end suspension ring (9) is mounted on one end of the cylinder (8) far away from the piston rod housing (4), and a rubber sleeve is sleeved on the pipe end suspension ring (9).