CN205918686U - Synchronous distributor pneumatic cylinder of non - same volume - Google Patents

Abstract

The utility model relates to a synchronous distributor pneumatic cylinder of non - same volume, two hydraulic fluid ports of the hydraulic fluid port of cylinder end, two cylinder body one sides communicate the oil return opening of the same and three pneumatic cylinder that the active area is inequality of three piston stroke respectively, and two hydraulic fluid ports of the hydraulic fluid port of cylinder bottom, two cylinder body opposite sides communicate respectively the oil inlet of pneumatic cylinder, the stroke of three piston in three cylinder is the same. The utility model discloses, synchronous precision does not receive the influence of factors such as system pressure, flow and load, and each sealing member adopts high -quality sealing material to make, makes the sync rate of every pneumatic cylinder the same, and the displacement sensor of the tailpiece of the piston rod portion installation of cylinder end department can realize servo or proportional control, reaches simultaneously to carry out speed, power, position isoparametric to needs many synchronous pneumatic cylinders and carry out purpose servo or proportional control.

Description

A kind of non-isometric(al) synchronous distributor hydraulic cylinder

Technical field

This utility model belongs to synchronous distributor structure technical field of improvement, especially a kind of non-isometric(al) synchronous distributor Hydraulic cylinder.

Background technology

Hydraulic cylinder utilizes the pressure of fluid to promote piston, then promotes external equipment action by piston rod, but some hydraulic cylinders Purposes more special, such as synchronous distributor hydraulic cylinder is a kind of hydraulic cylinder with single piston cylinder and multiple piston, its Structure is: include multistage cylinder barrel 11,18,25, two adjacent cylinder barrels are connected with each other by cylinder body 14,21, the cylinder barrel of side with The outboard end of the cylinder barrel of other side spiral-lock cylinder head 7 and cylinder bottom 28 respectively, installs a piston rod in cylinder head and cylinder bottom, cylinder head, Multiple cylinder bodies and cylinder bottom are provided with sealing member 6,13,20,27 with the position of plunger rod contacts, and piston rod is located in each cylinder barrel One piston 10,17,24 is respectively mounted on outer rim, cylinder head and cylinder bottom are respectively arranged with a hydraulic fluid port 40,42, each cylinder body is arranged There are two hydraulic fluid ports 41,43.During use, the formation of all pistons, speed are identical, the flow of its output pressure medium and volume Identical, achievable all kinds, cylinder diameter, bar footpath, stroke, load and operating pressure are all different, but its volume identical liquid The needs of cylinder pressure execution simultaneously, identical for stroke, but the different hydraulic cylinder of cylinder diameter, bar footpath, volume cannot be suitable for.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides structure simple, easy to use and can drive A kind of non-isometric(al) synchronous distributor hydraulic cylinder of the hydraulic cylinder that stroke is identical, cylinder diameter, bar footpath, volume are different.

This utility model adopts the technical scheme that:

A kind of non-isometric(al) synchronous distributor hydraulic cylinder, including three sections of cylinder barrels, cylinder body is passed through in two adjacent cylinder barrel ends It is connected with each other, outboard end spiral-lock cylinder head and the cylinder bottom respectively of the cylinder barrel of the leftmost side and the cylinder barrel of the rightmost side, in cylinder head and cylinder bottom Install a piston rod, the position of cylinder head, two cylinder bodies and cylinder bottom and plunger rod contacts is provided with sealing member, piston rod is located at each One piston is respectively mounted on the outer rim in cylinder barrel, cylinder head and cylinder bottom is respectively arranged with a hydraulic fluid port, each cylinder body is provided with two Individual hydraulic fluid port it is characterised in that: the hydraulic fluid port of cylinder head, two hydraulic fluid ports of two cylinder body sides be respectively communicated with three piston strokes identical and The oil return opening of three hydraulic cylinders that active area differs, the hydraulic fluid port of cylinder bottom, two hydraulic fluid ports of two cylinder body opposite sides connect respectively Lead to the oil-in of described hydraulic cylinder, three pistons stroke in three cylinder barrels is identical；

The ratio all same of effective active area and the effective active area of corresponding hydraulic cylinder rod chamber in each cylinder barrel And it is identical with the ratio of cylinder barrel stroke with hydraulic cylinder travel.

And, described cylinder head is installed protective cover, setting-in displacement transducer in the piston rod end in protective cover Measurement end and magnet ring, displacement transducer is arranged in the sensor protective cover installed outside protective cover, after described cylinder bottom is installed End cap, rear end cap is installed cylinder bottom protective cover, and the right-hand end of described piston rod is located in cylinder bottom protective cover.

And, the junction mounting flange of described cylinder head and cylinder barrel, each cylinder body both sides is equal with the junction of homonymy cylinder barrel The junction mounting flange of mounting flange, described cylinder bottom and cylinder barrel.

And, the left side of each piston pastes installation card key, and the right side of each piston pastes installation inner flange.

Advantage of the present utility model and good effect are:

This utility model, the diameter of three cylinder barrels is different, and in it, the stroke of the piston of setting is identical, makes to live in three cylinder barrels Plug effective active area identical with the ratio of the effective active area of corresponding hydraulic cylinder rod chamber and with stroke in cylinder barrel and The ratio of hydraulic cylinder travel is identical, and by such setting, synchronization accuracy is not subject to the shadow of the factors such as system pressure, flow and load Ring, each sealing member is made using quality seal material, makes the sync rates of each hydraulic cylinder identical, the piston rod end at cylinder head The displacement transducer installed can achieve that servo or ratio control, reach simultaneously to need many synchronous hydraulic cylinders carry out speed, The parameters such as power, position carry out the purpose that servo or ratio control.

Brief description

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

Fig. 2 is Fig. 1 use state figure.

Specific embodiment

With reference to embodiment, this utility model is further illustrated, following embodiments are illustrative, be not limited It is impossible to limit protection domain of the present utility model with following embodiments.

A kind of non-isometric(al) synchronous distributor hydraulic cylinder, as shown in Figure 1, 2, including three sections of cylinder barrels 11,18,25, two phases Adjacent cylinder barrel is connected with each other by cylinder body 14,21, the outboard end spiral-lock cylinder respectively of the cylinder barrel of the leftmost side and the cylinder barrel of the rightmost side 7 and cylinder bottom 28, install a piston rod 5 in cylinder head and cylinder bottom, the position of cylinder head, two cylinder bodies and cylinder bottom and plunger rod contacts sets It is equipped with sealing member 6,13,20,27, piston rod is located at and is respectively mounted a piston 10,17,24 in the outer rim in each cylinder barrel, each work Edge is respectively mounted the piston seal 9,16,23 for sealing beyond the Great Wall, and cylinder head and cylinder bottom are respectively arranged with a hydraulic fluid port 40,42, Two hydraulic fluid ports 41,43 are provided with each cylinder body, innovation of the present utility model is: 40, two cylinder body sides of the hydraulic fluid port of cylinder head Two hydraulic fluid ports 41 be respectively communicated with returning of three hydraulic cylinders 37,38,39 that three piston strokes are identical and active area differs Hydraulic fluid port, two hydraulic fluid ports 43 of 42, two cylinder body opposite sides of hydraulic fluid port of cylinder bottom are respectively communicated with the oil-in of described hydraulic cylinder, three work Stroke in three cylinder barrels for the plug is identical；The useful effect of effective active area and corresponding hydraulic cylinder rod chamber in each cylinder barrel The ratio all same of area and identical with the ratio of cylinder barrel stroke with hydraulic cylinder travel.

In the present embodiment, protective cover 4 installed by described cylinder head, setting-in displacement in the piston rod end in protective cover passes The measurement end of sensor 2 and magnet ring 3, displacement transducer is arranged in the sensor protective cover 1 installed outside protective cover, described cylinder bottom Upper installation rear end cap 29, rear end cap is installed cylinder bottom protective cover 30, and the right-hand end of described piston rod is located in cylinder bottom protective cover.

The junction mounting flange 8 of described cylinder head and cylinder barrel, the junction of left side cylinder body both sides and homonymy cylinder barrel is pacified respectively Dress flange 12,15, mounting flange 19,22 at the cylinder body of right side, the junction Method for Installation of described cylinder bottom and cylinder barrel, 26.

The left side of the piston in left side pastes installation card key 36, and right side pastes installation inner flange 35.Likewise, the installation of centre Card key 34 and flange 33, the installation card key 32 on right side and flange 31.

As shown in Fig. 2 three need synchronous hydraulic cylinder 37,38,39, stroke is identical and is designated as s', hydraulic cylinder rod chamber Effective active area be respectively a1'(hydraulic cylinder 37), a2'(hydraulic cylinder 38), a3'(hydraulic cylinder 39).Effective work of three cylinder barrels It is respectively a1, a2 and a3 with area, the stroke of three cylinder barrels is identical and is designated as s.

For making these three hydraulic cylinder synchronous actions, non-isometric(al) synchronous distributor structural parameters need to meet following condition:

$\frac{a_1}{a_1^{\′}}=\frac{a_2}{a_2^{\′}}=\frac{a_3}{a_3^{\′}}=\frac{s^{\′}}{s}$

That is:

$\frac{\frac{1}{4}\mathrm{\π}(d_1^2-d^2)}{a_1^{\′}}=\frac{\frac{1}{4}\mathrm{\π}(d_2^2-d^2)}{a_2^{\′}}=\frac{\frac{1}{4}\mathrm{\π}(d_3^2-d^2)}{a_3^{\′}}=\frac{s^{\′}}{s}$

Piston diameter in the diameter of piston rod d in non-isometric(al) synchronous distributor hydraulic cylinder, stroke s, three cylinder barrels D1, d2, d3, after meeting above-mentioned condition, non-isometric(al) synchronous distributor hydraulic cylinder gets final product output flow, volume becomes determination ratio to close The pressure medium of system, realizes that stroke is identical, cylinder diameter, bar footpath, the synchronization action of volume difference hydraulic cylinder.

This utility model, the diameter of three cylinder barrels is different, and in it, the stroke of the piston of setting is identical, makes to live in three cylinder barrels Plug effective active area identical with the ratio of the effective active area of corresponding hydraulic cylinder rod chamber and with stroke in cylinder barrel and The ratio of hydraulic cylinder travel is identical, and by such setting, synchronization accuracy is not subject to the shadow of the factors such as system pressure, flow and load Ring, each sealing member is made using quality seal material, makes the sync rates of each hydraulic cylinder identical, the piston rod end at cylinder head The displacement transducer installed can achieve that servo or ratio control, reach simultaneously to need many synchronous hydraulic cylinders carry out speed, The parameters such as power, position carry out the purpose that servo or ratio control.

Claims (4)

1. a kind of non-isometric(al) synchronous distributor hydraulic cylinder, including three sections of cylinder barrels, cylinder body phase is passed through in two adjacent cylinder barrel ends Connect, outboard end spiral-lock cylinder head and the cylinder bottom respectively of the cylinder barrel of the leftmost side and the cylinder barrel of the rightmost side, wear in cylinder head and cylinder bottom Fill a piston rod, the position of cylinder head, two cylinder bodies and cylinder bottom and plunger rod contacts is provided with sealing member, piston rod is located at each cylinder It is respectively mounted a piston in outer rim in cylinder, cylinder head and cylinder bottom are respectively arranged with a hydraulic fluid port, each cylinder body is provided with two Hydraulic fluid port it is characterised in that: it is identical and make that the hydraulic fluid port of cylinder head, two hydraulic fluid ports of two cylinder body sides are respectively communicated with three piston strokes The oil return opening of three hydraulic cylinders being differed with area, the hydraulic fluid port of cylinder bottom, two hydraulic fluid ports of two cylinder body opposite sides are respectively communicated with The oil-in of described hydraulic cylinder, three pistons stroke in three cylinder barrels is identical；

In each cylinder barrel the ratio all same of effective active area and the effective active area of corresponding hydraulic cylinder rod chamber and with Hydraulic cylinder travel is identical with the ratio of cylinder barrel stroke.

2. a kind of non-isometric(al) synchronous distributor hydraulic cylinder according to claim 1 it is characterised in that: on described cylinder head pacify Dress protective cover, is embedded in measurement end and the magnet ring of displacement transducer in the piston rod end in protective cover, and displacement transducer is pacified It is contained in the sensor protective cover installed outside protective cover, rear end cap installed by described cylinder bottom, rear end cap is installed cylinder bottom protection Cover, the right-hand end of described piston rod is located in cylinder bottom protective cover.

3. a kind of non-isometric(al) synchronous distributor hydraulic cylinder according to claim 2 it is characterised in that: described cylinder head and cylinder The junction mounting flange of cylinder, each cylinder body both sides is respectively mounted flange, described cylinder bottom and cylinder barrel with the junction of homonymy cylinder barrel Junction mounting flange.

4. a kind of non-isometric(al) synchronous distributor hydraulic cylinder according to claim 3 it is characterised in that: a left side for each piston Side pastes installation card key, and the right side of each piston pastes installation inner flange.