A kind of Anti-leak damper
The utility model belongs to damper technique field, relates to concretely a kind of Anti-leak damper.
Damper be widely used between two members for close, away from time be to prevent from bumping against a kind of special mechanism for relative displacement between the two arranging.Be illustrated in figure 1 the structural representation of the damper using at present, its structure comprise the fixing otic placode 1 being connected with two members respectively with movable otic placode 2, resistance cylinders 3 and the connecting body 4 being fixedly connected with it, be arranged at piston rod 7 and piston head 8 that resistance cylinders two ends have the end cap 5,6 in piston rod hole 9 and realize damping displacement.When the work of this damper, cylinder body and a closed environment of end cap composition, the inner damping oil of filling, piston rod moves back and forth under cylinder body internal damping oil coated, to realize the damping displacement of two members.
The piston rod that forms above-mentioned damper belongs to machining product, even if adopt fine grinding or abrasive machining, roughness reaches Ra<0.4 μ m, than the molecular level unit of damping oil, piston rod surface uneven still can be taken the damping oil in cylinder body out of volatilization by its end cap in its to-and-fro motion, occurs oil leakage phenomenon, thereby cause the decline of cylinder body internal damping oil level, cause its damping variation.
Model utility content
The purpose of this utility model be just to provide a kind of rational in infrastructure, and can overcome completely oil leakage phenomenon occur Anti-leak damper.
For achieving the above object, the technological scheme that the utility model adopts is:
A kind of Anti-leak damper, its structure comprises fixing otic placode (1) and movable otic placode (2), resistance cylinders (3), the connecting body (4) that can be connected with two members respectively, is arranged at left and right end cap (5,6) and the piston rod (7) of realizing damping displacement and piston head (8) that resistance cylinders two ends have piston rod hole (9); It is characterized in that:
There is the second sealed cylinder block in described resistance cylinders arranged outside,
The structure that forms this cylinder body is provided with the left and right leakproof end cap formation in the attached piston rod hole corresponding with described piston rod hole (9) by cylinder barrel and the center of being fixed on its two end part; Wherein, described left and right leakproof end cap inside is provided with the end portion supports of described resistance cylinders and forms the top pin of oilhole.
The additional technical feature that forms above-mentioned a kind of Anti-leak damper also comprises:
---described cylinder barrel sidepiece is provided with oil-filled hole;
---the outer side surface of described right leakproof end cap is provided with the attached barrel structure being fixedly connected with described connecting body (4).
A kind of Anti-leak damper provided by the utility model compared with prior art has the following advantages: one, owing to there being the second sealed cylinder block that is full of damping oil in resistance cylinders arranged outside, therefore while making to form the piston rod shift reciprocately of this damper, by the damping oil by taking out of in resistance cylinders, seen in by left and right end cap by piston rod again, effectively overcome the generation of damping oil oil level reduction phenomenon in resistance cylinders; Its two, owing to being provided with oil-filled hole forming the cylinder barrel sidepiece of the second sealed cylinder block, therefore can timing supplement again damping wherein, further to improve the damping of damper.
Brief description of the drawings
Fig. 1: the structural representation of prior art Anti-leak damper;
Fig. 2: the structural representation of the Anti-leak damper that the utility model provides;
Fig. 3: for forming the axial section structural representation of left and right leakproof end cap;
Fig. 4: be the sagittal plane structural representation of left and right leakproof end cap;
Fig. 5: be the structural representation in oil-filled hole.
Structure and working principle below in conjunction with accompanying drawing to Anti-leak damper provided by the utility model are described in further detail.
As shown in Figure 1, be the structural representation of Anti-leak damper provided by the utility model.The structure that forms this Anti-leak damper comprises and can relatively rotate with two respectively or fixing otic placode 1 and movable otic placode 2, resistance cylinders 3, connecting body 4 that the member of displacement is connected, be arranged at piston rod 7 and piston head 8 that resistance cylinders two ends have the left and right end cap 5,6 in piston rod hole 9 and realize damping displacement; Have by cylinder barrel 10 and the left and right leakproof end cap 12,13 that the center of being fixed on its two end part is provided with the attached piston rod hole 11 corresponding with piston rod hole 9 and form the second sealed cylinder block in above-mentioned resistance cylinders arranged outside, wherein, above-mentioned left and right leakproof end cap inside be provided with the end portion supports of resistance cylinders three (can be multiple) top pin 15(forming oilhole 14 as shown in Figure 3,4).
Its working principle is: when two members pull open relatively, the movable otic placode being connected with above-mentioned movable part pulls piston rod, and by it, by pulling out in resistance cylinders, pull-out is taken out of damping oil reservoir by piston rod and entered in the second sealed cylinder block that inside is filled with damping oil; In the time that two members are relatively close, the movable otic placode being connected with above-mentioned movable part promotes piston rod, it is advanced in resistance cylinders, now on piston rod, damping oil in the second sealed cylinder block is brought in resistance cylinders, thereby ensured that the damping oil in resistance cylinders can not reduce.
In the structure of the above-mentioned a kind of Anti-leak damper of formation,
---for can be to the damping oil in the second sealed cylinder block because moving back and forth of piston rod taken minimizing out of, and make in resistance cylinders oil can supplement, be provided with oil-filled hole 16 at cylinder barrel sidepiece;
---be fixedly connected with connecting body 4 for the ease of the right leakproof end cap that forms the second sealed cylinder block, have attached bucket 17 structures in right leakproof end cap arranged outside, connecting body can be with the second sealed cylinder block by screwed connection.
In addition, on the plug in the oil-filled hole (as shown in Figure 5) of the second sealed cylinder block of formation Anti-leak damper, be provided with a small ventilating holes 18, this aperture can be come in piston rod Bas Discharged from external belt, makes oil and extraneous UNICOM in oil pocket.