CN102441570A - Small hydraulic bin of continuous tube mill - Google Patents
Small hydraulic bin of continuous tube mill Download PDFInfo
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- CN102441570A CN102441570A CN201110329824XA CN201110329824A CN102441570A CN 102441570 A CN102441570 A CN 102441570A CN 201110329824X A CN201110329824X A CN 201110329824XA CN 201110329824 A CN201110329824 A CN 201110329824A CN 102441570 A CN102441570 A CN 102441570A
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Abstract
The invention discloses a small hydraulic bin of a continuous tube mill. The small hydraulic bin comprises a cylinder body, a balance cylinder and a pull rod; a piston is sleeved in the cylinder body; a guide rod for guiding the piston to move is mounted at the upper end of the piston; the balance cylinder is arranged at one end of the cylinder body where the guide rod is mounted; the pull rod passes through longitudinal through holes of the piston and longitudinal through holes of the guide rod; the upper end of the pull rod is connected with a piston rod of the balance cylinder; and the lower end of the pull rod is connected with a roller bearing support of the continuous tube mill. The invention has the benefits that the cylinder body of the balance cylinder and the cylinder body of the small hydraulic bin are connected into a whole, and the piston rod of the balance cylinder is connected with the roller bearing support through the pull rod, so that the gap between the top surface of the roller bearing support and the bottom surface of the piston is effectively eliminated, the difficulty in mounting and assembling a rolling mill housing is reduced considerably, and the arrangement of pipes between the small hydraulic bin and the balance cylinder is easy. The small hydraulic bin is simple and reliable, and low in cost.
Description
Technical field
The present invention relates to tandem rolling tube machine in the seamless steel tube production, relate in particular to a kind of little storehouse of hydraulic pressure of tandem rolling tube machine.
Background technology
Tandem rolling tube machine is the nucleus equipment of continuous rolling-tube unit, is used for rolling and perforation, and the little storehouse of hydraulic pressure is used to roll provides roll-force, to keep rolling stability.
The application of little storehouse of present hydraulic pressure and compensating cylinder is as shown in Figure 1; The little storehouse of compensating cylinder 11 and hydraulic pressure 12 each three be mutually 120 degree and be installed on the tunnel frame 13; Roll swing arm 14 is installed on the roll stand 16 through rotating shaft 15, and connects roll 17, and plug 18 is passed in roll 17 centres.In the operation of rolling, roll 17 cooperates with plug 18 and forms fixing pass, and the little storehouse 12 of hydraulic pressure passes to the huge roll-force of roll 17 through the bearing block 19 that connects roll 17, to keep the stable of pass, makes rolled piece reach desirable wall thickness accuracy.The quality and the whole unit productivity ratio of hence one can see that 12 pairs of finished products in the little storehouse of hydraulic pressure all have decisive influence, and this just needs the little storehouse of the hydraulic pressure 12 stable bearing blocks 19 that pass through to transmit roll-forces to roll 17.
In the operation of rolling, tunnel frame 13 is rotated with roll swing arm 14 synchronously at present, and compensating cylinder 11 stretches out the briquetting that promotes on the roll swing arm 14, so that roll swing arm 14 fits tightly with the little storehouse 12 of hydraulic pressure all the time.Like this at roll swing arm 14 when rotating shaft 15 is rotated, the little storehouse 12 of the hydraulic pressure roll swing arm 14 that could in effective travel, bear down on one all the time keeps roll-force, to remain the correct of rolling groove.Three roll swing arms 14 of this structural requirement have identical size, and tolerance is very tight.In fact have only three roll swing arms 14 to process together, could guarantee identical size, difficulty of processing is very big.
The little storehouse 12 of hydraulic pressure passes to the huge roll-force of roll 17 through bearing block 19; And compensating cylinder 11 is used for eliminating the gap of little storehouse 12 of hydraulic pressure and bearing block 19, and the stability of roll 17 with the pass of plug 18 formation of tandem rolling tube machine in the operation of rolling is kept in compensating cylinder 11 and the little storehouse 12 of hydraulic pressure jointly.
The structure in the little storehouse 12 of traditional hydraulic pressure is as shown in Figure 2, and screw rod and nut 6 are linked to be a cavity with cylinder cap 1, cylinder barrel 2 and cylinder bottom 5, and guide post 4 is installed on piston 3 and the cylinder bottom 5, and piston 3 is installed in the cavity, and piston 3 moves in cavity under the effect of hydraulic oil.
Because this tandem rolling tube machine adopts the tunnel type mainframe; The little storehouse 12 of hydraulic pressure is circular layout on tunnel frame 13, and tunnel frame 13 must pulled out or push to roll stand 16 when changing, and 12 in the little storehouse of roll chock 19 and hydraulic pressure does not allow the gap when rolling; Compensating cylinder 11 is installed to eliminate the gap in 12 in roll chock 19 and the little storehouse of hydraulic pressure by each roll 17 place on roll stand 16; The hydraulic piping of roll stand 16 is connected very difficulty with extraneous hydraulic system, and because of roll stand 16 very easily leakage of oils of frequent change junction, the complex structure of roll stand 16; Feasible processing of this structure and assembly difficulty are very big, and processing cost increases greatly.
Summary of the invention
To the problem that exists in the prior art, the object of the invention is the little storehouse of hydraulic pressure that a kind of tandem rolling tube machine of simple in structure, easy to process, reliable and stable and low processing cost is provided.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
The little storehouse of a kind of hydraulic pressure of tandem rolling tube machine comprises:
The cylinder body in the little storehouse of hydraulic pressure, compensating cylinder and pull bar;
Be arranged with piston in the said cylinder body, the upper end of said piston is equipped with the guide post that is used to guide said piston motion;
Said compensating cylinder is arranged on the end that said cylinder body is installed said guide post;
Said pull bar passes the longitudinal hole of said piston and guide post, and the upper end connects the piston rod of said compensating cylinder, and the lower end connects the roll chock of said tandem rolling tube machine.
Further, the end that said pull bar connects said roll chock is provided with the inverted T shape head, and said roll chock is provided with the inverted T shape hole that matches with said inverted T shape head.
Further, said guide post is connected with said piston, between said guide post and said cylinder body and the piston hermetically-sealed construction is set all.
Further, said cylinder body comprises interconnective cylinder cap, cylinder barrel and cylinder bottom, and said compensating cylinder is installed on the said cylinder bottom, and said guide post passes the longitudinal hole of said cylinder bottom.
Beneficial effect of the present invention is that the present invention connects into an integral body with the cylinder body in compensating cylinder and the little storehouse of hydraulic pressure, and connects the piston rod and the roll chock of compensating cylinder through pull bar; Thereby effectively eliminate the gap between roll chock end face and the piston bottom surface, the processing of roll stand and assembly difficulty will reduce much like this, and the cylinder body in the little storehouse of hydraulic pressure and the pipe arrangement between the compensating cylinder are easy; The present invention is simple and reliable; Cost is low, and frame mode of the present invention also helps and improves roll stand integral intensity and rigidity, reduces the requirement on machining accuracy of roll chock; Thereby improve the wall thickness accuracy of rolled piece; The present invention can also simplify pipe arrangement, reduces pipeline because of repeatedly connecting the possibility of throwing off leakage of oil, has improved production efficiency.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further explain:
Fig. 1 is the little storehouse of a hydraulic pressure work structuring sketch map in the prior art;
Fig. 2 is the little chamber structure sketch map of hydraulic pressure in the prior art;
Fig. 3 is the little chamber structure sketch map of hydraulic pressure of tandem rolling tube machine of the present invention;
Fig. 4 is the little storehouse of the hydraulic pressure work structuring sketch map of tandem rolling tube machine of the present invention.
The specific embodiment
The exemplary embodiments that embodies characteristic of the present invention and advantage will be described in detail in following explanation.Be understood that the present invention can have various variations on various embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be the usefulness of being used as explanation in itself, but not in order to restriction the present invention.
As shown in Figure 3, the present invention includes cylinder body 7, compensating cylinder 11 and pull bar 10.Wherein, cylinder body 7 is the little storehouse of a hydraulic pressure agent structure, and the outside can be supported, the inner airtight chamber that forms.Cylinder body 7 comprises cylinder cap 1, cylinder barrel 2 and cylinder bottom 5, and cylinder barrel 2 is a tubular, and cylinder cap 1 is installed in cylinder barrel 2 two ends respectively with cylinder bottom 5, and is fixedly connected through screw rod and nut 6, thereby forms airtight chamber.In airtight chamber, slide and be provided with piston 8, these piston 8 one ends pass cylinder cap 1 and are exposed at outside the airtight chamber, and with the bearing block 19 that bears down on one, piston 8 other ends are positioned at airtight chamber, slide in airtight chamber at pressure oil control lower piston 8.
Compensating cylinder 11 is fixedly mounted on the cylinder bottom 5 through support 20, and output 21 is towards cylinder bottom 5, and output 21 is provided with piston rod 22, and this piston rod 22 is identical with above-mentioned piston 8 operation principles.
Piston 8 is fixedly connected with guide post 9, can carry out positiver sealing through high-pressure seal ring between guide post 9 and piston 8 and the cylinder bottom 5.All be processed with the through hole 25 that is connected in guide post 9 and the piston 8, pull bar 10 passes this through hole 25, thereby cylinder body 7 is clipped between bearing block 19 and the compensating cylinder 11.Move through piston rod 22, pulling pull bar 10 moves, thus the gap between adjustment piston 8 bottom surfaces and the bearing block 19.
As shown in Figure 4; When roll stand 16 pushes tunnel frame 13; The inverted T shape head 24 of pull bar 10 front ends is inserted in the inverted T shape hole 23 of roll chock 19 from inverted T shape hole, roll chock 19 side 23 opening parts, and 23 slide, slide into stationary roll frame 16 and tunnel frame 13 behind the correct position along the inverted T shape hole; Compensating cylinder 11 retractions; Drag roll chock 19 and move upward, contact with the bottom surface of piston 8, eliminate the gap of bottom surface of end face and the piston 8 of roll chock 19 fully up to the end face of roll chock 19.
The present invention is installed on the tunnel frame 13 among Fig. 4.Compensating cylinder 11 is used to eliminate the gap of 8 in roll chock 19 and piston, and compensating cylinder 11 drags roll chock 19 jointly with piston 8 and in chute, radially moves, to keep the correct of rolling groove.The advantage of structure of the present invention is that the bearing block 19 of each roll 17 bears down on one through the present invention with roll 17 independently of one another, and relevance is low, and requirement on machining accuracy is not high relatively.
Beneficial effect of the present invention is that the present invention connects into an integral body with the cylinder body 7 in compensating cylinder 11 and the little storehouse of hydraulic pressure, and connects the piston rod 22 and roll chock 19 of compensating cylinder 11 through pull bar 10; Thereby effectively eliminate the gap between roll chock 19 end faces and piston 8 bottom surfaces, the processing of roll stand 16 and assembly difficulty will reduce much like this, and the cylinder body 7 in the little storehouse of hydraulic pressure and the pipe arrangement between the compensating cylinder 11 are easy; The present invention is simple and reliable; Cost is low, and frame mode of the present invention also helps and improves roll stand 16 integral intensity and rigidity, reduces the requirement on machining accuracy of roll chock 19; Thereby improve the wall thickness accuracy of rolled piece; The present invention can also simplify pipe arrangement, reduces pipeline because of repeatedly connecting the possibility of throwing off leakage of oil, has improved production efficiency.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit, being done, and all belong within the protection domain of claim of the present invention.
Claims (4)
1. the little storehouse of the hydraulic pressure of a tandem rolling tube machine is characterized in that, comprising:
The cylinder body in the little storehouse of hydraulic pressure, compensating cylinder and pull bar;
Be arranged with piston in the said cylinder body, the upper end of said piston is equipped with the guide post that is used to guide said piston motion;
Said compensating cylinder is arranged on the end that said cylinder body is installed said guide post;
Said pull bar passes the longitudinal hole of said piston and guide post, and the upper end connects the piston rod of said compensating cylinder, and the lower end connects the roll chock of said tandem rolling tube machine.
2. the little storehouse of the hydraulic pressure of tandem rolling tube machine as claimed in claim 1 is characterized in that, the end that said pull bar connects said roll chock is provided with the inverted T shape head, and said roll chock is provided with the inverted T shape hole that matches with said inverted T shape head.
3. the little storehouse of the hydraulic pressure of tandem rolling tube machine as claimed in claim 1 is characterized in that, between said guide post and said cylinder body and the piston hermetically-sealed construction is set all.
4. like the little storehouse of hydraulic pressure of the arbitrary described tandem rolling tube machine of claim 1-3, it is characterized in that said cylinder body comprises interconnective cylinder cap, cylinder barrel and cylinder bottom, said compensating cylinder is installed on the said cylinder bottom, and said guide post passes the longitudinal hole of said cylinder bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329824XA CN102441570A (en) | 2011-10-26 | 2011-10-26 | Small hydraulic bin of continuous tube mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329824XA CN102441570A (en) | 2011-10-26 | 2011-10-26 | Small hydraulic bin of continuous tube mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102441570A true CN102441570A (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110329824XA Pending CN102441570A (en) | 2011-10-26 | 2011-10-26 | Small hydraulic bin of continuous tube mill |
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| CN (1) | CN102441570A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521528A (en) * | 2013-11-01 | 2014-01-22 | 太原重工股份有限公司 | Rolling mill screw-down device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653785A (en) * | 2009-09-15 | 2010-02-24 | 太原通泽重工有限公司 | Quick separating regulation device of roller |
| CN101658866A (en) * | 2009-09-15 | 2010-03-03 | 太原通泽重工有限公司 | Direct pressure three-roller continuous rolling mill |
| CN201482792U (en) * | 2009-09-15 | 2010-05-26 | 太原通泽重工有限公司 | Direct pressure type three-roller continuous mill |
| CN101773940A (en) * | 2009-12-23 | 2010-07-14 | 太原通泽重工有限公司 | Hold-down balancing mechanism of rotary frame overall replacing three-roll pipe mill |
| CN102211110A (en) * | 2010-12-24 | 2011-10-12 | 天津君晟成套设备有限公司 | Servo screwdown continuous rolling frame with mill roll gap control mechanism |
-
2011
- 2011-10-26 CN CN201110329824XA patent/CN102441570A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653785A (en) * | 2009-09-15 | 2010-02-24 | 太原通泽重工有限公司 | Quick separating regulation device of roller |
| CN101658866A (en) * | 2009-09-15 | 2010-03-03 | 太原通泽重工有限公司 | Direct pressure three-roller continuous rolling mill |
| CN201482792U (en) * | 2009-09-15 | 2010-05-26 | 太原通泽重工有限公司 | Direct pressure type three-roller continuous mill |
| CN101773940A (en) * | 2009-12-23 | 2010-07-14 | 太原通泽重工有限公司 | Hold-down balancing mechanism of rotary frame overall replacing three-roll pipe mill |
| CN102211110A (en) * | 2010-12-24 | 2011-10-12 | 天津君晟成套设备有限公司 | Servo screwdown continuous rolling frame with mill roll gap control mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521528A (en) * | 2013-11-01 | 2014-01-22 | 太原重工股份有限公司 | Rolling mill screw-down device |
| CN103521528B (en) * | 2013-11-01 | 2015-07-22 | 太原重工股份有限公司 | Rolling mill screw-down device |
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Application publication date: 20120509 |
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