CN1034754C - Hydraulic revolving feed device - Google Patents
Hydraulic revolving feed device Download PDFInfo
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- CN1034754C CN1034754C CN94105169A CN94105169A CN1034754C CN 1034754 C CN1034754 C CN 1034754C CN 94105169 A CN94105169 A CN 94105169A CN 94105169 A CN94105169 A CN 94105169A CN 1034754 C CN1034754 C CN 1034754C
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Abstract
The present invention relates to a hydraulic pressure rotary feeding device which is used for rotating and feeding pipes for various pipe cold rolling machines. The hydraulic pressure rotary feeding device is composed of an oil pump, a motor, an oil motor, a universal valve, a lubricating device, a control adjusting device, etc. which are fixed in a box body, wherein the control adjusting device is arranged in the box body and is formed by the connection of a distributing valve and an adjustor, and the distributing valve is formed by the connection of a valve core and a valve block with an oil groove. Because the rotation and the feeding of pipes are controlled by the distributing valve between the oil motor and the adjustor, and the adjustor, the feeding amount and the rotating angle can be changed by changing the space capacity of the adjustor, and the adjustment is stepless and has the advantages of high precision and large range. The device has the advantages of simple structure, large transmission power, definite time, amount and voltage, and stable and accurate operation.
Description
The present invention relates to a kind of metal working equipment, hydraulic revolving feed device is mainly used in various types of cold pilger mills and is used to control the revolution of tube rolling and the mechanism that sends to forward.
Metal pipe is cold rolling to add man-hour, and pipe must turn round and send to regularly, so revolving feed device is the critical piece of cold pilger mill, is an intermittent motion mechanism.
Both at home and abroad to have a great deal of be the indexing mechanism that adopts the work of Ma Ertai dish to the revolution feed mechanism of cold pilger mill, but its mechanism's complexity, manufacture cost height, noise is big, transmitted power is little.
The revolution of West Germany's cold pilger mill, sending to, is to adopt mechanical type, promptly uses so-called " screw mandrel moves about " form.Russian Patent SU743734 " the slide shifter of the feed mechanism of Pilger milling train " forms by cam, oil cylinder and other hydraulic element.
The domestic existing mechanism of hydraulic gyration feed mechanism with cam, fork, the intermittent movement of directional control valve joint work control oil motor, but because of cam as dynamical element, efficient is low, bearing capacity is low, impact resistance is poor, and oil inlet quantity and recirculating oil quantity are unequal during oil motor work, can not form reliable back pressure, the revolution send to inhomogeneous, actuation time instability.The revolution amount is adjusted difficulty, when the higher revolution amount of head reciprocal time adjustment difficulty especially.
The object of the present invention is to provide a kind of hydraulic revolving feed device, its transmitted power is big, action is stable, accurately, reliable operation, can realize step-less adjustment and regulation range is big, highly versatile, the degree of regulation height.
The present invention is achieved in that hydraulic revolving feed device is by the oil pump, oil motor, one-way valve, relief valve, valve for general use, throttle valve, oil purifier, the lubricating fitting that are fixed in the casing, the regulating and controlling device is formed, and the regulating and controlling device is to be installed in the casing by spool and to be with distributing valve that the valve piece more than two and two of oil groove connects into to be connected with regulator more than two and two in aggregatesly to constitute.Oil pump one oil drain out is connected with relief valve, valve for general use (4) through one-way valve, another oil drain out is through one-way valve and valve for general use (4), relief valve, pressure meter switch connect, be connected with valve for general use (8), (9) through oil purifier, valve for general use (8) with send to oil motor, valve for general use (9), with distributing valve, by one-way valve with send oil motor and rotary motor oil to, distributing valve is connected.Valve for general use (9) with send oil motor to, the tank drainback pipe connects, rotary motor oil connects with distributing valve.Distributing valve connects with regulator and connects with the return tube that leads to fuel tank by one-way valve.And connect with throttle valve and lubricating pipe by another one-way valve.
The present invention is compared with prior art: because revolution, send to by custom-designed and be placed on two oil motors, distributing valve between several regulators and several regulators jointly control, therefore as long as change the regulator spatial volume, corner that can two oil motors of corresponding change, thereby reach the purpose that changes the amount of feed and angle of revolution, and this adjusting is stepless, regulation range is big, degree of regulation is high.Feed regulation range maximum is decided as required, and the angle of revolution is regulated and decided as required.Can suitably select the valve piece and the different regulator of sending, turning round volume to of different structure to carry out various collocation as required, just can obtain various informative revolution, feed motion, can satisfy the different process requirement of large, medium and small type cold pilger mill.Stablize, turn round accurately and send to 180 times/minute inner can acquisitions of scope when head work number of times, be applicable to the supporting of high-speed cold Pilger mill.
Distributing valve is a control unit, rather than dynamical element, so driving force is very little, it is also very little to wear and tear, so the life-span is long, it is made up of three valve pieces in addition, the valve piece can be processed separately, and the dimensioned to inner oil sump on the valve piece requires to reduce greatly like this, has improved processing technology.Angle [alpha]=120 ° are sent in this device revolution to, can change the numerical value of α angle if need as long as change the position of the relative spool of distributing valve valve piece.
The employing secondary is sent to, the rotating distributing valve work of secondary, if the angle that bent axle changes two α angle sums and rev, send to equates, the rolling effective length of roll increases, when rolling reduction is identical and the unit rolling reduction reduces, promptly rolling load reduces, and corresponding axial force also reduces, not only can reduce the wearing and tearing of machinery, improve the life-span of rolling tool, improve the rolling mill practice condition, improve the production tube precision and boost productivity.
Because of the spool on the distributing valve is connected with power on the milling train head, distributing valve can guarantee revolution very effectively and send to and turn round, send to the milling train head motion fully synchronously, guarantee that revolution sends to regularly.
This device realizes revolution, when sending to pressure oil be regularly, quantitatively, level pressure enters oil motor, working stability is reliable, transmitted power is big, satisfy the cold pilger mill technological requirement fully, and distributing valve, controller structure are simple, low cost of manufacture, maintaining are convenient, are the desirable revolution feed mechanisms of cold pilger mill.
Fig. 1. hydraulic schematic diagram of the present invention.
Fig. 2. structural representation of the present invention.
Fig. 3. distributing valve (removing casing and base plate) the first scheme structural representation (being this programme shown in Fig. 1, Fig. 2).
Fig. 4. when bent axle was in the α angle, milling train turned round and sends at the dead point, back, when being in other angles, is rolled.
Fig. 5. when bent axle is in the α angle, milling train at preceding dead point and the back dead point all turn round and send to, when being in other angles, be rolled.
Fig. 6. distributing valve (removing casing and base plate) alternative plan structural representation (position of the crank throw of bent axle when the K point).
Fig. 7. distributing valve (removing casing and base plate) third party's case structural representation (position of the crank throw of bent axle when the K point).
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Oil pump (1) is that duplex pump, valve for general use (8), (9) are three-position four-way valve, [wherein valve for general use (8) for reequiped], valve for general use (4) are two-position four-way valve, send to, rotary motor oil (10), (11) all be prior art for the radial plunger type oil motor of high volumetric efficiency, relief valve (3), (5), pressure meter switch (6), oil purifier (7), casing (14), regulator (17), (18), lubricating fitting.
Send to, rotary motor oil (10), (11) be respectively by train and the gear engagement of sending on axle (23), the turning axle (22).Spool (20) is that an end has the ladder of through hole cylindrical.
Valve piece (24) has the long block of through hole on being, middle endoporus has the second ring oil groove, and second ring oil groove opposite side has the ladder oilhole that communicates with outer wall respectively, and the oilhole end has screw thread.
Valve piece (25) on the long block of through hole arranged, middle endoporus has three annular oil grooves, second ring oil groove homonymy has the ladder oilhole that communicates with outer wall at interval, for into and out of oilhole, the oilhole end has screw thread.Opposite side one annular oil groove has the ladder oilhole that communicates with outer wall, and the oilhole end has screw thread.
Spool (20) passes valve piece (24) and two valve piece (25) intermediate throughholes and its sliding joining respectively, and by the through hole on valve piece (24), (25) base plate (21) that they are separately fixed at casing (14) is gone up formation distributing valve (12) with screw.
Also control the lubrication oil supply of this device simultaneously on the distributing valve (12) by valve piece (24) and spool (20)., be fixed on the connecting rod (19) of bent axle (16) by the through hole on the spool (20) with bearing pin.
With oil connection the oilhole end of two valve pieces (25) on oilhole on regulator (17), (18) and the distributing valve (12) is connected into the whole regulating and controlling device that constitutes.
Above-mentioned distributing valve (12) is in the head to-and-fro motion one-period, only once sends near the dead point, back and the situation of rev.
If will be in head to-and-fro motion one-period, each be once sent to and turns round near forward and backward dead point, and secondary feed before and after requiring, revolution amount are all identical.At this moment in the distributing valve (12) ' (Fig. 6), valve piece (24) ' except that intermediate throughholes and three annular oil grooves are arranged, link up the in addition straight hole H of second ring oil groove, valve piece (25) ' except that intermediate throughholes and Fourth Ring shape oil groove were arranged, a side was linked up the straight hole B or the A of second ring oil groove in addition.
If want the equivalent revolution of secondary, once send to, only need the straight hole B that links up the second ring oil groove is stopped up or do not process, if want the secondary equivalence to send to, rev only needs the straight hole A that links up the second ring oil groove is stopped up or do not process.
This scheme is identical with Fig. 3 scheme, promptly has only one to send regulator and a revolution regulator to.
If will be in head to-and-fro motion one-period, each be once sent to and turns round near forward and backward dead point, and requires forward and backward secondary feed, revolution amount all inequality or identical.At this moment among distributing valve (12) ＂ (Fig. 7), valve piece (25) ＂ is except that having intermediate throughholes and six annular oil grooves, and two sides have the straight hole of linking up the second ring oil groove respectively, and C, D oil groove connect two revolution regulators, and E, F oil groove connect two and send regulator to.
The oil-feed volume adjustment of sending, turning round regulator to can be become identical or inequality, then make secondary feed, revolution amount identical or inequality.
Suitable collocation by different structure valve piece among Fig. 3, Fig. 6, Fig. 7 and to the adjusting of regulator oil-feed volume just can obtain various informative revolution, feed motion.
During use, turn on the power switch motor and rotate, the high pressure oil of oil pump (1) one oil drain out output enters valve for general use (8) through one-way valve (2), oil purifier (7), enters through two one-way valves (2) and sends to, and rotary motor oil (10), (11) promote its rotation.The low pressure oil that rotary motor oil (11) is discharged enters regulator (17) through distributing valve (12), when regulator (17) when cavity volume is filled, oil motor (11) oil extraction nowhere, be forced to stop operating, this moment, rotary motor oil also turned over an intermittent movement of several angle realization, this motion passes to turning axle (22) through train of gearings, finishes the rotation motion of cold pilger mill.And, enter regulator (18) through distributing valve (12) from sending the low pressure oil process valve for general use (8) that oil motor (10) is discharged to.Cavity volume in regulator (18) is full of by oil, and regulator (18) inner carrier is shifted onto the end by oil.At this moment send oil motor (10) oil extraction and be forced to stop operating nowhere to, turned over several angle and finished the motion of intermittent-rotation but at this moment send oil motor (10) to, and this motion passes to two through train of gearings and sends axle (23) to and drive the feed motion at intermittence that screw mandrel is finished cold pilger mill.
When distributing valve (12) commutation, promptly bent axle be in Fig. 4 (360 °-α) within the scope.Oil is just gone up oil outlet through the one-way valve oil sump tank with through throttle valve (13) oil sump tank or to lubricating fitting from distributing valve (12).
If 2DT energising and 3DT or 4DT also switch on, this moment pressure oil without valve for general use (8) and through valve for general use (9), make and send oil motor (10) to and rotate continuously, that needing in the cold pilger mill work promptly to realize sends to or drag link motion fast.5DT energising this moment, all fuel-displacedly all work oil pump (1).
Cold pilger mill power enters through the train of gearings transmission through input shaft (15) and gives bent axle (16) and connecting rod (18), passes to the spool (20) of distributing valve (12) again, controls distributing valve (12) and regulator (17), (18), correlation by spool (20).The rolling number of times of bent axle (16) rotating speed and cold pilger mill head is synchronous fully.
The to-and-fro motion of cold pilger mill head is (operation cycle) once, and about 1/3 time workpiece is that revolution is sent to, and 2/3 time was rolling time.It is fixed that the distribution of its time can be come by the position of the relative spool of distributing valve valve piece.
Claims (6)
1. hydraulic revolving feed device, by be fixed on oil pump (1) in the casing (14), send to, rotary motor oil (10), (11), one-way valve (2), relief valve (3), (5), oil purifier (7), valve for general use (4), (8), (9), throttle valve (13), lubricating fitting, regulating and controlling device are formed, and it is characterized in that:
A. the regulating and controlling device is for being installed in casing in by spool (20) and being with distributing valve that two of oil groove and two connect into uuper valve block to be connected formation in aggregates with regulator more than two and two;
B. oil pump (1) one oil drain out is through one-way valve (2) and relief valve (3), valve for general use (4) connects, another oil drain out is through one-way valve (2) and valve for general use (4), relief valve (5), pressure meter switch (6) connects, through oil purifier (7) and valve for general use (8), (9) connect, valve for general use (8) with send oil motor (10) to, valve for general use (9), with distributing valve (12), by one-way valve with send oil motor and rotary motor oil (10) to, (11), distributing valve (12) connects, valve for general use (9) with send oil motor (10) to, the tank drainback pipe connects, rotary motor oil (11) connects with distributing valve, distributing valve and regulator (17), (18) connect and connect with the return tube that leads to fuel tank, and connect with throttle valve (13) and lubricating pipe by another one-way valve by one-way valve.
2. device according to claim 1, it is characterized in that spool (20) is that an end has the ladder of through hole cylindrical, valve piece (24) has the long block of through hole on being, middle endoporus has the second ring oil groove, second ring oil groove opposite side has the ladder oilhole that communicates with outer wall respectively, the oilhole end has screw thread, valve piece (25) has the long block of through hole on being, middle endoporus has three annular oil grooves, second ring oil groove homonymy has the ladder oilhole that communicates with outer wall at interval, for advancing, oil outlet, the oilhole end has screw thread, and opposite side one annular oil groove has the ladder oilhole that communicates with outer wall, and the oilhole end has screw thread.
3. device according to claim 1 and 2, it is characterized in that spool (20) pass respectively valve piece (24) and two valve piece (25) intermediate throughholes and its sliding join and go up with the base plate (21) that screw is separately fixed at casing (14) by the through hole on valve piece (24), (25) with them constitute distributing valve (12), also control lubricating fitting on the distributing valve (12) simultaneously by valve piece (24) and spool (20).
4. according to claim 1 or 2 or 3 described devices, it is characterized in that with bearing pin by the through hole on the spool (20), be fixed on the connecting rod (19) of bent axle (18), the oilhole end of two valve pieces (25) on oilhole on two regulators (17), (18) and the distributing valve (12) connected into the whole regulating and controlling device that constitutes with oil connection.
5. device according to claim 1, it is characterized in that valve piece (24) ' except that intermediate throughholes and three annular oil grooves are arranged, link up the in addition straight hole H of second ring oil groove, valve piece (25) ' except that intermediate throughholes and Fourth Ring shape oil groove were arranged, a side was linked up the straight hole B or the A of second ring oil groove in addition.
6. device according to claim 1 is characterized in that valve piece (25), and " except that intermediate throughholes and six annular oil grooves were arranged, two sides had the straight hole of linking up the second ring oil groove respectively, and C, D oil groove connect two revolution meaning joint devices, and E, F oil groove connect two and send regulator to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94105169A CN1034754C (en) | 1994-05-13 | 1994-05-13 | Hydraulic revolving feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94105169A CN1034754C (en) | 1994-05-13 | 1994-05-13 | Hydraulic revolving feed device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1118846A CN1118846A (en) | 1996-03-20 |
| CN1034754C true CN1034754C (en) | 1997-04-30 |
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ID=5031941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94105169A Expired - Fee Related CN1034754C (en) | 1994-05-13 | 1994-05-13 | Hydraulic revolving feed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034754C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4942699B2 (en) * | 2008-04-25 | 2012-05-30 | カヤバ工業株式会社 | Control device for hybrid construction machine |
| CN101709725B (en) * | 2009-11-17 | 2011-07-27 | 华东交通大学 | Downhole anti-explosion hoisting machine hydraulic control system adopting multi-pump combination technique |
| CN103706643B (en) * | 2013-10-30 | 2016-01-27 | 宁波芯直电气有限公司 | A kind of digital cold pilger mill rotary feeding system controller |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224411A (en) * | 1991-06-10 | 1993-07-06 | Poclain Hydraulics | Hydraulic circuit for supplying at least one hydraulic motor incorporating "disengageable" pistons |
| US5255590A (en) * | 1990-06-23 | 1993-10-26 | Ing. Guenter Klemm Bohrtechnik Gmbh | Control device for the load- dependent connection of a hydraulic stand by motor to a base-load motor |
-
1994
- 1994-05-13 CN CN94105169A patent/CN1034754C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5255590A (en) * | 1990-06-23 | 1993-10-26 | Ing. Guenter Klemm Bohrtechnik Gmbh | Control device for the load- dependent connection of a hydraulic stand by motor to a base-load motor |
| US5224411A (en) * | 1991-06-10 | 1993-07-06 | Poclain Hydraulics | Hydraulic circuit for supplying at least one hydraulic motor incorporating "disengageable" pistons |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1118846A (en) | 1996-03-20 |
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Owner name: NINGBO XINSIDA MACHINE STEEL TUBE MANUFACTURING C Free format text: FORMER OWNER: ZHONGYUAN MACHINERY STEEL PIPE CO., LTD., NINGBO Effective date: 20050401 |
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Effective date of registration: 20050401 Address after: 315032, Zhejiang City, Ningbo province Zhuang Bridge Patentee after: Ningbo xinsida machinery pipe manufacturing Co. Ltd. Address before: 315020, Nanjing town, Zhejiang, Ningbo Province, Nanjing Road side Patentee before: Zhongyuan Machinery Steel Pipe Co., Ltd., Ningbo |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |