CN204403029U - A kind of for the locking cylinder in roughing mill - Google Patents

Abstract

The utility model discloses a kind of for the locking cylinder in roughing mill, comprise cylinder barrel and end cap, also comprise the belleville spring group that is made up of at least two belleville springs and by piston rod, the piston of piston body and guide rod composition, described piston body is arranged between piston rod and guide rod, described piston sleeve is connected in cylinder barrel, described end cap is on the piston rod nested, and be fixedly connected with cylinder barrel, described guide rod stretches out through cylinder barrel, and the part that guide rod extends cylinder barrel is nested with adjusting nut, described belleville spring group is nested in and is positioned on the part guide rod of cylinder barrel inside.The beneficial effect that the utility model has: can reach the safety that on-the-spot usage requirement can ensure again field apparatus, also serves simultaneously and reduces hydraulic oil consumption effect, thus many-sided reduction on site spare rehabilitation expense and grease consumption costs.

Description

A kind of for the locking cylinder in roughing mill

Technical field

The utility model patent relates to the locking cylinder of its piston rod action of mechanical-hydraulic complex controll, it effectively can perform the on-the-spot action command needed, reach equipment operation requirement, on-the-spot abnormal generation can be greatly reduced, effective guarantee equipment and production safety simultaneously.

Background technique

In smelting iron and steel industry, usually 1580 roughing equipment SP milling trains are used, this roughing mill is Japanese IHI introducing equipment, mechanism is comparatively complicated, module latch mechanism is wherein that hydraulic jack controls, when rolling, oil cylinder rodless cavity is subject to action of hydraulic force, piston rod stretches out and withstands module and lock, because SP designs closely, herein from red steel very close to, hydraulic cylinder sealing, the impact that adpting flange sealing is subject to High Temperature High Pressure was easily lost efficacy, and then cause leakage of oil, cylinder replacing causes the non-programmed halt producing line on the one hand, on the other hand, easily cause fire accident, to produce etc. loss be very large.

Model utility content

The purpose of this utility model is to provide a kind of for the locking cylinder in roughing mill, make its usage requirement that can reach scene can ensure again the safety of field apparatus, also serve simultaneously and reduce hydraulic oil consumption effect, thus many-sided reduction on site spare rehabilitation expense and grease consumption costs.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of for the locking cylinder in roughing mill, comprise cylinder barrel and end cap, it also comprises the belleville spring group be made up of at least two belleville springs and the piston be made up of piston rod, piston body and guide rod, described piston body is arranged between piston rod and guide rod, described piston sleeve is connected in cylinder barrel, described end cap is on the piston rod nested, and be fixedly connected with cylinder barrel, described guide rod stretches out through cylinder barrel, and the part that guide rod extends cylinder barrel is nested with adjusting nut, described belleville spring group is nested in and is positioned on the part guide rod of cylinder barrel inside.

Preferably, rod seal circle is provided with between described piston rod and cylinder barrel.

Preferably, described piston body is nested with piston packing.

Preferably, guide rod is nested with dust seal, described dust seal is between belleville spring group and cylinder barrel.

Preferably, the oil duct communicated with piston rod is provided with in the side sidewall of described cylinder barrel.

Preferably, in described belleville spring group, each belleville spring is relatively stacked, can take the form of " head to head ", the form of " head is to tail " or the form of " head to head " and " head is to tail " phase compound.

The beneficial effects of the utility model are mainly reflected in: can reach the safety that on-the-spot usage requirement can ensure again field apparatus, also serve simultaneously and reduce hydraulic oil consumption effect, thus many-sided reduction on site spare rehabilitation expense and grease consumption costs.

Accompanying drawing explanation

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

Fig. 2 is the structural representation of piston in the utility model;

In figure: 1, cylinder barrel; 11, oil duct; 2, piston; 21, piston rod, 22, piston body; 23, guide rod; 3, belleville spring group; 4, end cap; 5, bolt of cover; 51, rod seal circle; 52, piston packing; 53, dust seal; 6, adjusting nut.

Embodiment

The utility model provide a kind of for the structure for the locking cylinder in roughing mill as depicted in figs. 1 and 2, the piston 2 be made up of piston rod 21, piston body 22 and guide rod 23 is socketed in cylinder barrel 1, end cap 4 is nested on piston rod 21, and be fixedly connected with cylinder barrel 1 by bolt of cover 5, guide rod 23 stretches out through cylinder barrel 1, and the part that guide rod 23 extends cylinder barrel 1 is nested with adjusting nut 6, the belleville spring group 3 be made up of at least two belleville springs be nested in be positioned at cylinder barrel 1 inside part guide rod 23 on.

Wherein, consider that oil cylinder space is less, and decrement is larger, belleville spring group adopts superimposed and involutory complex form, the i.e. form of " head to head " and " head is to tail " compound, like this, decrement is comparatively large, can meet oil cylinder stroke requirement, equally also can meet the requirement of coupling mechanism force.The parameter of the single belleville spring selected is:

D＝96,d＝46，t＝3.8，h ₀＝H ₀-t＝3

$p_1=\frac{p_z}{n}=\frac{26925}{2}=13462N,C=D/d=2.09$

$K_1=\frac{1}{\mathrm{\π}}\·\frac{{\left(\frac{C-1}{C}\right)}^2}{\frac{C+1}{C-1}-\frac{2}{\ln C}}=0.717$

The load that spring flattens is:

$\begin{array}{c}{p}_c=\frac{4E}{1-{\mathrm{\μ}}^2}\·\frac{t^3{h}_0}{K_1{D}^2}\·K_4\\ =\frac{4\×2.06\×{10}^5}{1-{0.3}^2}\·\frac{{3.8}^3\×3}{0.717\×{96}^2}\·1=25300N\end{array}$

$\frac{P_1}{P_C}=0.532,\frac{h_0}{t}=\frac{3}{3.8}=0.79$

Through calculating: $\frac{f_1}{h_0}\≈0.43$

Then f ₁=0.43 × 3=1.29

If be 2.7 tons according to the corresponding spring force of the decrement of 10mm, then have:

$i=\frac{f_{z1}}{f_1}=\frac{10}{1.29}=7.75,$

Get 8 groups, spring maximum compressibility is now h ₀× 8=3 × 8=24mm.

But when considering former design locking state, cylinder rod chamber has the compensation rate of 7.5mm, therefore, the total compression amount of spring will reach about 7.5+10+10=27mm, therefore, select spring be 10 groups better, then the decrement that spring is maximum can reach h ₀× 10=3 × 10=30mm.

Now, the free height not being subject to the cluster spring of load is:

H _Z＝i[H ₀+(n-1)t]＝10×[6.8+(2-1)×3.8]＝106mm

In time being subject to the power of 2.7 tons, the decrement of spring is actual is:

F _z1=i × f ₁=10 × 1.29=12.9 ≈ 13mm, now, the height of cluster spring is 106-13=93mm.

Continue to calculate, can draw, time this cluster spring decrement is maximum 30mm, the power that cluster spring needs is about 5.6 tons, and the power that namely hydraulic coupling will reach 5.6 tons just can overcome spring and be retracted by piston rod.

Its free length of parameter according to compound disc spring is 106mm, and time decrement is 13mm, compressive force is 2.7 tons, when being compressed to 30mm, compressive force is about 5.6 tons, substantially meets locking effect, when namely compressing 13mm, utilize the compressive force 2.7 tons of oil cylinder by module latch, and maintain the wear compensation amount of about 7mm, when die change block time, by hydraulic coupling, belleville spring is continued compression 10mm, piston rod is retracted, reserves position and carry out the operation of lifting module.

Certainly, the combining form of belleville spring also can be taked separately " head to head " form or the form of " head is to tail ".

Therefore, design cylinder tube according to above parameter, first, oil cylinder install send scene time, should have the impacting force of 2.7 tons, after therefore the cylinder barrel of oil cylinder installs piston rod, rodless cavity keeps length to be 93mm (decrement of belleville spring is 13mm).The rear portion of piston body 22 arranges the guide rod 23 of a M22 material, make the guide rod of belleville spring on the one hand, on the other hand, be used for oil cylinder adjustment belleville spring pretightening force is installed, and when occurring that abnormal conditions and oil cylinder are not opened by hydraulic coupling at the scene, it can be utilized to be retracted by piston rod, do not affect and change module operation.

For the ease of sealing and dust-proof, be respectively equipped with rod seal circle 51, piston packing 52 and dust seal 53 between the inwall of piston rod 21 and cylinder barrel 1, between piston body 22 and the inwall of cylinder barrel 1 and between the inwall of guide rod 23 and cylinder barrel 1.

For the ease of effective performance of hydraulic pressure, in the side sidewall of cylinder barrel 1, be provided with the oil duct 11 communicated with piston rod 21.

Adopt when roughing mill works spring to lock, like this, under steel rolling state, in the pipeline that oil cylinder is attached thereto, there is no fluid, very effectively can avoid the generation of fire like this, keep the stable of milling train.When changing module, selector valve commutates, thus utilizes hydraulic coupling to overcome spring force to be retracted by cylinder piston rod 10mm, thus ensures the normal replacing of module.

The beneficial effects of the utility model are mainly reflected in: can reach the safety that on-the-spot usage requirement can ensure again field apparatus, also serve simultaneously and reduce hydraulic oil consumption effect, thus many-sided reduction on site spare rehabilitation expense and grease consumption costs.

In sum, be only preferred embodiment of the present utility model, not be used for limit the utility model implement scope, all equalizations of doing according to shape, structure, feature and the spirit described in the utility model right change and modify, and all should be included in right of the present utility model.

Claims (6)

1. one kind for the locking cylinder in roughing mill, comprise cylinder barrel and end cap, it is characterized in that, also comprise the belleville spring group that is made up of at least two belleville springs and by piston rod, the piston of piston body and guide rod composition, described piston body is arranged between piston rod and guide rod, described piston sleeve is connected in cylinder barrel, described end cap is on the piston rod nested, and be fixedly connected with cylinder barrel, described guide rod stretches out through cylinder barrel, and the part that guide rod extends cylinder barrel is nested with adjusting nut, described belleville spring group is nested in and is positioned on the part guide rod of cylinder barrel inside.

2. locking cylinder as claimed in claim 1, is characterized in that, be provided with rod seal circle between described piston rod and cylinder barrel.

3. locking cylinder as claimed in claim 1, is characterized in that, described piston body is nested with piston packing.

4. locking cylinder as claimed in claim 1, it is characterized in that, guide rod is nested with dust seal, described dust seal is between belleville spring group and cylinder barrel.

5. locking cylinder as claimed in claim 1, is characterized in that, be provided with the oil duct communicated with piston rod in the side sidewall of described cylinder barrel.

6. as the locking cylinder in Claims 1 to 5 as described in any one, it is characterized in that, in described belleville spring group, each belleville spring is relatively stacked.