CN203189594U

CN203189594U - Self-restoring damper

Info

Publication number: CN203189594U
Application number: CN 201320165245
Authority: CN
Inventors: 姚冬成; 周宝昌; 周建华; 潘敏成; 孙伟平; 周厚生
Original assignee: JIANGSU CHANGLI HYDRAULIC CYLINDER CO Ltd
Current assignee: Jiangsu Changli Technology Development Co ltd
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2013-09-11
Anticipated expiration: 2023-04-03

Abstract

The utility model discloses a self-restoring damper which comprises an outer cylinder and a tail cover, wherein the outer cylinder is connected with a reinforced concrete foundation, a hydraulic oil chamber is arranged inside the outer cylinder, the tail cover is arranged at the end of the outer cylinder, a main piston connected with a strike guiding device is arranged inside the outer cylinder, the main piston comprises an inner cylinder matched with the outer cylinder, a piston arranged at the inner end of the inner cylinder, and a cylinder head arranged at the outer end of the inner cylinder, a main piston inner cavity is formed inside the inner cylinder, a floating piston capable of diving the main piston inner cavity into a nitrogen chamber and an oil chamber is movably arranged in the main piston, the oil chamber is next to the hydraulic oil chamber, a jar tube capable of stretching into the oil chamber inside the main piston after passing through the hydraulic oil chamber and the piston is fixed on the tail cover, and damping holes allowing hydraulic oil to flow through are formed in the jar tube. The self-restoring damper is simple in structure and is capable of steadily buffering a stop buffer through the change of the active area of the damping holes in the jar tube and achieving restoration of the piston through the nitrogen chamber inside the piston.

Description

Runback position damper

Technical field

The utility model relates to a kind of runback position damper.

Background technique

Make various frictions and other inhibitions of free vibration decay, can be referred to as damping.Be placed in the resistance that motion can be provided on the structural system, the device of depletion kinergety is damper.In space flight and aviation, military project, firearms, automobile light industry, use various dampers already and come the vibration damping energy dissipating.Damper also is that single cylinder is from the core component of the hydraulic buffer stopper that resets.

The model utility content

The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, provide a kind of and automatically reset, the steady runback position damper of cushioning effect.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of runback position damper, comprise that the inside that links to each other with reinforced concrete foundation has the outer cylinder and the tail-hood that is arranged on the outer cylinder end of hydraulic fluid chamber, outer cylinder inside is provided with and clashes into the main piston that guiding device links to each other, main piston comprises the inner cylinder tube that is equipped with outer cylinder, be arranged on the piston and the cylinder head that is arranged on the inner cylinder tube outer end of inner cylinder tube the inner, the inner main piston inner chamber that forms of inner cylinder tube, be movably equipped with the floating piston that the main piston inner chamber can be divided into nitrogen chamber and accumulator in the main piston, accumulator and hydraulic fluid chamber are adjacent, fixedly have on the tail-hood and can pass the jarring pipe that hydraulic fluid chamber and piston stretch into main piston interior reservoir grease chamber, offering on the jarring pipe can be for the damping hole of hydraulic oil inflow and outflow.

Further, main piston inside also fixedly has and can be the spacing back-up ring that prevents that floating piston and jarring pipe from bumping of floating piston.

Further, outer cylinder and inner cylinder tube are connected by guide pin bushing.

The beneficial effects of the utility model are: the runback position damper that the utility model provides is simple in structure, can change by the useful area by damping hole on the jarring pipe, steadily buffer stop and finish piston reset by the nitrogen chamber of internal piston.

Description of drawings

Below in conjunction with drawings and embodiments the utility model is further specified.

Fig. 1 is structural representation of the present utility model.

1. hydraulic fluid chambers, 2. outer cylinders, 3. tail-hoods, 4. inner cylinder tubes, 5. pistons, 6. cylinder head, 7. accumulators, 8. nitrogen chamber, 9. floating pistons, 10. jarring pipes, 11. damping holes, 12. back-up rings, 13. guide pin bushings, 14. plugs among the figure

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

A kind of runback position damper as shown in Figure 1 comprises that the inside that links to each other with reinforced concrete foundation has the outer cylinder 2 and the tail-hood 3 that is arranged on outer cylinder 2 ends of hydraulic fluid chamber 1, and outer cylinder 2 inside are provided with and clash into the main piston that guiding device links to each other.Main piston comprises the inner cylinder tube 4 that is equipped with outer cylinder 2, be arranged on the piston 5 of inner cylinder tube 4 the inners and be arranged on the cylinder head 6 of inner cylinder tube 4 outer ends.The inner cylinder tube 4 inner main piston inner chambers that form.Be movably equipped with floating piston 9 in the main piston inner chamber, be separated into nitrogen chamber 8 and accumulator 7.Accumulator 7 is adjacent with hydraulic fluid chamber 1.Outer cylinder 2 is connected by guide pin bushing 13 with inner cylinder tube 4.Plug 14 is fixedly arranged on the tail-hood 3, at tail-hood jarring pipe 10 is arranged fixedly by plug 14.Jarring pipe 10 passes hydraulic fluid chamber 1 and piston 5 stretches into main piston interior reservoir grease chamber 7.Offering on the jarring pipe 10 can be for the damping hole 11 of hydraulic oil inflow and outflow.

In order to improve cushioning effect better, also fixedly there is back-up ring 12 main piston inside.It is spacing that back-up ring 12 can be floating piston 9, prevents that floating piston 9 and jarring pipe 10 from bumping.

Runback position damper is that single cylinder is from the core component of the hydraulic buffer stopper that resets.Main piston links to each other with the bump guiding device, clashes into guiding device and can guarantee that damper avoids the effect of lateral force.When bump takes place, main piston is banged in the outer cylinder 2, hydraulic oil in the piston 5 compression hydraulic fluid chambers 1 makes hydraulic oil enter in the accumulator 7 by the damping hole 11 on the jarring pipe 10, promotes the nitrogen gas generation high pressure in the floating piston 9 compressed nitrogen air chambers 8 in the main piston.During bump, piston 5 is to the motion of jarring pipe 10 directions, and the part damping hole 11 on the jarring pipe 10 is hidden by piston 5 gradually, and effective damping aperture 11 gross areas reduce gradually, and the energy of the dither that produces during impact is effectively absorbed steadily buffering.After bump finished, the nitrogen with high pressure promoted floating piston 9 conversely, and the hydraulic oil in the accumulator 7 is pushed back hydraulic fluid chamber 1, and piston 5 is automatically reset, and realized automatically reseting of damper.

Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. runback position damper, comprise that the inside that links to each other with reinforced concrete foundation has the outer cylinder of hydraulic fluid chamber (1) (2) and is arranged on the tail-hood (3) of outer cylinder (2) end, outer cylinder (1) inside is provided with and clashes into the main piston that guiding device links to each other, main piston comprises the inner cylinder tube (4) that is equipped with outer cylinder (2), be arranged on the inner piston (5) of inner cylinder tube (4) and be arranged on the cylinder head (6) of inner cylinder tube (4) outer end, the inner main piston inner chamber that forms of inner cylinder tube (4), it is characterized in that: be movably equipped with the floating piston (9) that the main piston inner chamber can be divided into accumulator (7) and nitrogen chamber (8) in the described main piston, accumulator (7) is adjacent with hydraulic fluid chamber (1), described tail-hood (3) is gone up fixedly to have and can be passed the jarring pipe (10) that hydraulic fluid chamber (1) and piston (5) stretch into main piston interior reservoir grease chamber (7), offers on the described jarring pipe (10) and can supply the damping hole (11) of hydraulic oil inflow and outflow.

2. runback according to claim 1 position damper is characterized in that: described main piston inside also fixedly has and can be the spacing back-up ring (12) that prevents that floating piston (9) and jarring pipe (10) from bumping of floating piston (9).

3. runback according to claim 1 position damper, it is characterized in that: described outer cylinder (2) is connected by guide pin bushing (13) with inner cylinder tube (4).