CN102720725B

CN102720725B - Multi-stage push cylinder

Info

Publication number: CN102720725B
Application number: CN201210195236.6A
Authority: CN
Inventors: 鲁岱; 裴建厅
Original assignee: NIMAK WELDING (BEIJING) Ltd
Current assignee: Nimak
Priority date: 2012-06-14
Filing date: 2012-06-14
Publication date: 2015-04-22
Anticipated expiration: 2032-06-14
Also published as: CN102720725A

Abstract

The invention relates to a multi-stage push cylinder and aims to provide a bush piston type double-stroke push cylinder with output pressure increasing with increase of the number of cylinder sections. The multi-stage push cylinder comprises a plurality of cylinder shafts, a plurality of cylinder barrels, a plurality of pistons, a plurality of partitions, a plurality of air holes, a front cover, a rear cover and the like. The multi-stage push cylinder is divided into a plurality of mutually independent chambers by the partitions. The cylinder shafts and pistons are connected in cascade. A bush piston is disposed inside at least one cylinder barrel and can serve as a pressure piston and also a cylinder barrel for another piston. The cylinder shafts of the multi-stage push cylinder are shortened, so that materials are economized, and types of stored parts are reduced. Pressure of the multi-stage push cylinder can be selected according to actual uses, and the multi-stage push cylinder is reliable to operate, convenient to use and easy to produce.

Description

A kind of multi-stage push cylinder

Technical field

The present invention relates to cylinder technical field, especially relate to a kind of multi-stage push cylinder.

Background technique

Existing market upper cylinder is one-level cylinder, and the pressure of output can not regulate, and formed by multiple cylinder barrel cascade, complex structure, volume are large.

Summary of the invention

The object of the invention is to provide a kind of delivery pressure, and with the increase of cylinder joint number, the cover piston pattern double-stroke of increase pushes away cylinder.

The invention provides a kind of multi-stage push cylinder, comprise: cylinder axis, mandrel, coupling shaft, minor axis, first piston, second piston, 3rd piston, 4th piston, first cylinder barrel, second cylinder barrel, 3rd cylinder barrel, steel ball, first dividing plate, second partition, first pore, second pore, 3rd pore, 4th pore, 5th pore, protecgulum and bonnet, described first dividing plate is between the first cylinder barrel and the second cylinder barrel, second partition is between described second cylinder barrel and the 3rd cylinder barrel, two pieces of dividing plates are by described first cylinder barrel, second cylinder barrel and the 3rd cylinder barrel are separated into three chambers, three chambers are independent mutually, wherein first piston is cover piston, and serve as the second piston/cylinder, the second piston is contained in first piston inside simultaneously, protecgulum, the first cylinder barrel, the first dividing plate, the second cylinder barrel, second partition, the 3rd cylinder barrel, bonnet are connected by pull bar, cylinder axis and the second piston are threaded connection, mandrel, coupling shaft, the 3rd piston are threaded connection, minor axis and the 4th piston are threaded connection, cylinder axis and mandrel are connected as a single entity by steel ball, and the first pore, the second pore, the 3rd pore are positioned on the first dividing plate, and the 4th pore is positioned on bonnet, 5th pore is positioned on protecgulum, and steel ball is positioned on cylinder axis, open pore on coupling shaft, pore UNICOM on the first pore and coupling shaft, near protecgulum, outside cylinder axis, Compress Spring is housed.

Beneficial effect of the present invention is: the present invention had not only served as pressure piston due to cover piston but also served as the cylinder barrel of another piston, plays a multiplex effect, makes boundary dimension optimization of the present invention; The situation of pressure can be needed to select progression of the present invention according to real work, the pressure as needed is large, and the progression of selection is just many, and the part more than secondary adding level is consistent, can reduce part deposit kind, save raw material.The present invention can according to actual service condition selection pressure in a word, reliable operation, easy to use, be easy to processing.

Accompanying drawing explanation

Fig. 1 is plan view of the present invention;

Fig. 2 is the A-A sectional view of Fig. 1.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.

Embodiment

As depicted in figs. 1 and 2, a kind of multi-stage push cylinder of the present embodiment, piston is two-stage, dividing plate is two pieces, comprise: cylinder axis 4, mandrel 5, coupling shaft 9, minor axis 16, first piston 10, second piston 8, the 3rd piston 14, the 4th piston 17, first cylinder barrel 7, second cylinder barrel 13, the 3rd cylinder barrel 18, steel ball 6, first dividing plate 12, second partition 15, first pore 11, second pore 21, the 3rd pore 20, the 4th pore 22, the 5th pore 2, cylinder is divided into three chambers by two pieces of dividing plates 12,15, and three chambers are independent mutually, wherein first piston 10 is cover piston, serves as the second piston 8 cylinder body simultaneously, protecgulum 1, first cylinder barrel 7, first dividing plate 12, second cylinder barrel 13, second partition 15, 3rd cylinder barrel 18, bonnet 19 is connected by pull bar, cylinder axis 9 and the second piston 8 are threaded connection, mandrel 5, coupling shaft 9, 3rd piston 14 is threaded connection, minor axis 16 and the 4th piston 17 are threaded connection, it is inner that second piston 8 is contained in first piston 10, cylinder axis 4 and mandrel 5 are connected as a single entity by steel ball 6, first pore 11, second pore 21, 3rd pore 20 is positioned on the first dividing plate 12, 4th pore 22 is positioned on bonnet 19, 5th pore 2 is positioned on protecgulum 1, steel ball 6 is positioned on cylinder axis 4.

In use the present invention is divided into four working procedure: be the first stroke respectively, the second stroke, the second stroke return and return with the first stroke.

1. original state: as shown in Figure 1 and Figure 2, multi-stage push cylinder is in original state;

2. the first stroke: the first pore 11, the 3rd pore 20 air inlet, the 5th pore 2 is vented, and the second piston 8 promotes to move outside gas first cylinder axle, and steel ball 6 moves with cylinder axis 4, until the second piston 8 contacts back-up ring, multi-stage push cylinder first stroke terminates;

3. the second stroke: the second pore 21, the 4th pore 22 air inlet, 3rd pore 20 is vented, first piston 10, the 3rd piston 14 and the 4th piston 17 promote to move outside cylinder axis 4, mandrel 5, coupling shaft 9 and minor axis 16, until the 3rd piston 14 contacts the first dividing plate 12,4th piston 17 contacts second partition 15, and multi-stage push cylinder second stroke terminates;

4. the second stroke returns: the 3rd pore 20 air inlet, second pore 21, the 4th pore 22 are vented, first piston 10, the 3rd piston 14 and the 4th piston 17 promote cylinder axis 4, mandrel 5, coupling shaft 9 and minor axis 16 rollback, until first piston 10 contacts the first dividing plate 12,3rd piston 14 contacts second partition 15,4th piston 17 contacts bonnet 19, and multi-stage push cylinder second stroke returns end;

5. the first stroke returns: the 5th pore 2 air inlet, and the first pore 11 is vented, and the second piston 8 promotes cylinder axis 4 rollback, and steel ball 6 moves with cylinder axis 4, and multi-stage push cylinder first stroke returns end, namely gets back to original state.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.

Claims

1. a multi-stage push cylinder, it is characterized in that, comprise: cylinder axis, mandrel, coupling shaft, minor axis, first piston, second piston, 3rd piston, 4th piston, first cylinder barrel, second cylinder barrel, 3rd cylinder barrel, steel ball, first dividing plate, second partition, first pore, second pore, 3rd pore, 4th pore, 5th pore, protecgulum and bonnet, described first dividing plate is between the first cylinder barrel and the second cylinder barrel, second partition is between described second cylinder barrel and the 3rd cylinder barrel, two pieces of dividing plates are by described first cylinder barrel, second cylinder barrel and the 3rd cylinder barrel are separated into three chambers, three chambers are independent mutually, wherein first piston is cover piston, and serve as the second piston/cylinder, the second piston is contained in first piston inside simultaneously, protecgulum, the first cylinder barrel, the first dividing plate, the second cylinder barrel, second partition, the 3rd cylinder barrel, bonnet are connected by pull bar, cylinder axis and the second piston are threaded connection, mandrel, coupling shaft, the 3rd piston are threaded connection, minor axis and the 4th piston are threaded connection, cylinder axis and mandrel are connected as a single entity by steel ball, and the first pore, the second pore, the 3rd pore are positioned on the first dividing plate, and the 4th pore is positioned on bonnet, 5th pore is positioned on protecgulum, and steel ball is positioned on cylinder axis, open pore on coupling shaft, pore UNICOM on the first pore and coupling shaft, near protecgulum, outside cylinder axis, Compress Spring is housed.