CN2821244Y

CN2821244Y - Multiple plunger interlink synchronous shunt

Info

Publication number: CN2821244Y
Application number: CN 200520072553
Authority: CN
Inventors: 徐文友; 姜银福
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-09
Filing date: 2005-06-09
Publication date: 2006-09-27
Anticipated expiration: 2015-06-09

Abstract

The utility model relates to a multiple plunger interlink synchronous shunt, which is more specifically used for synchronous lift or synchronous push movement of a plurality of oil cylinders and belongs to the technical field of a hydraulic drive device. The inner part of the oil cylinder is provided with a driving piston, and reversing valves are respectively connected with a rod cavity and a rodless cavity. A driven piston is connected with the driving piston, and the number of the adopted driven piston is at least two or more than two. The driven piston is fixed on an oil cylinder seat, and the driven piston is provided with oil through holes. The tail end of each oil through hole is respectively connected with an oil inlet and outlet one-way valve, and the oil cylinder seat is provided with a position detector. The utility model has the advantage of simple, compact and reasonable and structure. Because a sealed piston is used for shunting, a hydraulic or pneumatic power source pushes one driving piston to move, so as to cause oil liquid to pump out of a plurality of driven pistons. The diameter of each driven piston is the same with the stroke of pump oil, sealing elements guarantee no internal and external leakage, and the driven piston drives the oil cylinders in the same specification, so the oil cylinders can move synchronously accurately.

Description

Multi-Plunger Linked Synchronous Shunt

Technical field

The utility model relates to a kind of Multi-Plunger Linked Synchronous Shunt, specifically is used for the synchronous lifting of a plurality of oil cylinders or passing synchronously, belongs to the fluid pressure drive device technical field.

Background technique

Using oil hydraulic cylinder to carry out brute force drives, be the mode of often using during the large-scale heavy duty engineering is used, yet, usually need to use a plurality of oil cylinders just can finish construction operation because construction needs and the restriction of appointed condition, so the synchronization-moving problem of a plurality of oil cylinders has become the key issue of necessary solution.Before the utility model is made, in prior art, the mode that multi-cylinder is synchronously commonly used is two kinds of closed-loop fashion and open loop approach, the advantage of closed-loop fashion is the synchronization accuracy height, shortcoming is the equipment complex and expensive, open loop approach equipment is simple, but be difficult to guarantee synchronization accuracy, open loop hydraulic synchronous driving system in the past, usually use independent plunger oil transfer pump or elements such as gear synchronized splitter device, synchronized splitter valve, plunger pump and gear shunt are limited by volumetric efficiency, and synchronization accuracy is not high, and the synchronized splitter valve can't under high pressure use.Therefore the open loop approach synchronous drive lacks a kind of desirable vent diverter.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, thereby provides a kind of simple, compact and reasonable for structure; Provide power by an oil sources or source of the gas, the fluid that output multichannel flow equates, the oil cylinder that drives a plurality of same sizes just can the accurately synchronization-moving Multi-Plunger Linked Synchronous Shunt of ten minutes.

Main solution of the present utility model is achieved in that

The utility model mainly adopts active piston 2 is housed in oil cylinder 1, selector valve 8 connects rod chamber 10 and rodless cavity 11 respectively, relay piston 4 is connected with active piston 2, relay piston 4 adopts two or more at least, relay piston 4 is fixed on the oil cylinder seat 9, and relay piston 4 is provided with oil through road independently and causes oil outlet on the cylinder seat 9, the end of each oil through, be connected in line check valve 5 and fuel-displaced one-way valve 6 respectively, position detector 7 is installed on oil cylinder seat 9.

Compared with the prior art the utility model has the following advantages:

The utility model is simple, compact and reasonable for structure; Because use the piston of band sealing to shunt, hydraulic pressure or Pneumatic pressure power source promote an active piston and move, thereby make a plurality of relay pistons pump fluid; Because each relay piston diameter is identical, their pump oil stroke is also identical, has Sealing to guarantee no internal and outernal leakage again, so the liquid measure that each relay piston pumps is strict equal, therefore, each relay piston drives the oil cylinder of a same size, and oil cylinder just can the accurately same moved further of ten minutes.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model mainly is made up of oil cylinder 1, active piston 2, Sealing 3, relay piston 4, in line check valve 5, fuel-displaced one-way valve 6, position detector 7, selector valve 8, oil cylinder seat 9, rod chamber 10, rodless cavity 11 etc.

An active piston 2 is equipped with in employing in two-way cylinder 1, rely on selector valve 8 commutations, selector valve 8 connects rod chamber 10 and rodless cavity 11 respectively, active piston 2 can to-and-fro motion in oil cylinder 1, two or more relay pistons 4 are adopted in having of linking to each other with active piston 2 at least, each relay piston 4 all is fixed on the oil cylinder seat 9, be respectively arranged with Sealing 3 on active piston 2 and the relay piston 4 and prevent that fluid from leaking, each relay piston 4 is provided with oil through road independently and causes oil outlet on the cylinder seat 9, the end of each oil through, be connected in line check valve 5 and fuel-displaced one-way valve 6 respectively, in line check valve 5 is oil-filled to oil through, fuel-displaced one-way valve 6 outside pipeline oil extractions, when active piston 2 backhauls, fuel tank fluid enters the oil pocket of relay piston 4 by in line check valve 5, when active piston 2 pushings, fluid in all relay piston 4 oil pockets enters outer pipeline by fuel-displaced one-way valve 6, position detector 7 is installed on oil cylinder seat 9 in addition, when active piston 2 moves to limit travel, position detector 7 sends signal, make selector valve 8 commutations, so back and forth constantly motion of active piston 2, promote relay piston 4 fluid is pressed into oil cylinder 1, the oil mass that is pressed into owing to every path equates, therefore can keep the same moved further of each oil cylinder.

Claims

1, a kind of Multi-Plunger Linked Synchronous Shunt, active piston (2) is housed in oil cylinder (1), it is characterized in that adopting selector valve (8) to connect rod chamber (10) and rodless cavity (11) respectively, relay piston (4) is connected with active piston (2), relay piston (4) adopts two or more at least, relay piston (4) is fixed on the oil cylinder seat (9), relay piston (4) is provided with oil through road independently and causes oil outlet on the cylinder seat (9), the end of each oil through, be connected in line check valve (5) and fuel-displaced one-way valve (6) respectively, position detector (7) is installed on oil cylinder seat (9).

2, Multi-Plunger Linked Synchronous Shunt according to claim 1 is characterized in that being respectively arranged with Sealing (3) on described active piston (2) and the relay piston (4).