CN102699433A - Hydraulic control system of on-line seamless steel pipe sampling saw - Google Patents
Hydraulic control system of on-line seamless steel pipe sampling saw Download PDFInfo
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- CN102699433A CN102699433A CN2012102078711A CN201210207871A CN102699433A CN 102699433 A CN102699433 A CN 102699433A CN 2012102078711 A CN2012102078711 A CN 2012102078711A CN 201210207871 A CN201210207871 A CN 201210207871A CN 102699433 A CN102699433 A CN 102699433A
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Abstract
The invention provides a hydraulic control system of an on-line seamless steel pipe sampling saw, which can greatly reduce equipment cost and maintenance cost on the basis that the safe and reliable on-line seamless steel pipe sampling process and simplicity for control can be guaranteed. The hydraulic control system comprises a sampling saw clamping hydraulic control system, and a saw blade feed rate adjusting hydraulic control system, and is characterized in that the saw blade feed rate adjusting hydraulic control system comprise a saw blade feed rate adjusting hydraulic cylinder, a superimposed electromagnetic one-way throttle valve and a three-position four-way electromagnetic directional valve; the upper cavity of the saw blade feed rate adjusting hydraulic cylinder is connected with the cavity A of the three-position four-way electromagnetic directional valve through a hydraulic pipeline; the lower cavity of the saw blade feed rate adjusting hydraulic cylinder is connected with the superimposed electromagnetic one-way throttle valve and the cavity B of the three-position four-way electromagnetic directional valve through a hydraulic pipeline in sequence; and the cavity T of the three-position four-way electromagnetic directional valve is connected with an oil return line T, a cavity P and a main oil line P.
Description
Technical field
The present invention relates to hydraulic drive control technology field, be specifically related to the hydraulic control system of online seamless steel pipe sampling saw.
Background technology
In the seamless steel tube production chain design; Can seamless steel pipe sampling saw be arranged design and installation in the tandem rolling unit subsequent handling; Purpose is before large batch of seamless steel pipe becomes product; Must pass through inspection by sampling, promptly regularly at random from a bit of steel pipe of sawing the rolling steel pipe, and then physical dimension and each item physicochemical property of institute's rolled steel tube tested.During the sampling of sampling saw; As shown in Figure 1, steel pipe that will be to be taken a sample by transmission roller channel is sent to the assigned address under the sampling saw, after the clamping hydraulic cylinder 9 driving clamping devices 14 of sampling saw clamp the seamless steel pipe 15 of waiting to take a sample; The motor 12 of sampling saw drives saw blade 13 rotations; Simultaneously, the saw blade 13 that saw blade amount of feeding adjustment hydraulic cylinder 4 driving saw blade amount of feeding guiding mechanisms 11 drive the sampling saw descends fast, before the fast approaching steel pipe of waiting to take a sample of saw blade; Saw blade amount of feeding adjustment hydraulic cylinder 4 drives saw blade 13 that saw blade amount of feeding guiding mechanisms 11 drive the sampling saw feeding sawing steel pipe 15 of waiting to take a sample that descends at a slow speed; For sawingly cut completely, saw blade amount of feeding adjustment Driven by Hydraulic Cylinder saw blade amount of feeding guiding mechanism resets fast, and the clamping hydraulic cylinder drives clamping device and unclamps the sampling steel pipe simultaneously.
Because in the steel pipe sampling sawing process, saw blade needs feeding at a slow speed to descend, to avoid the vexed saw of saw blade or to beat tooth; Simultaneously, for improving the operating efficiency of Tube Cutting sampling, saw blade needs to descend fast before not contacting steel pipe.
The hydraulic control system of existing seamless steel pipe sampling saw comprises sampling tight hydraulic control system of saw cramp and saw blade amount of feeding adjustment hydraulic control system; As shown in Figure 2; The tight hydraulic control system of saw cramp of wherein taking a sample comprises successively the clamping hydraulic cylinder 9 that connects by usual manner, pressure switch 8, stacked unidirectional throttle valve 7, stacked compression release valve 6, two four-way electromagnetic reversing valves 5; Saw blade amount of feeding adjustment hydraulic control system comprises saw blade amount of feeding adjustment hydraulic cylinder 4, the electro-hydraulic proportion reversing valve 10 that connects by usual manner successively, and sampling tight hydraulic control system of saw cramp and saw blade amount of feeding adjustment hydraulic control system are connected to form hydraulic control circuit through hydraulic oil pipe and working connection P, oil return line T respectively; During system works, the outlet pressure of adjustment stacked compression release valve 6 satisfies it and clamps requirement; The opening degree of adjustment stacked unidirectional throttle valve 7 is with the speed of service of control clamping hydraulic cylinder 9.Clamping device receives when clamping the steel pipe instruction, and a of two four-way electromagnetic reversing valves 5 holds electricly, and clamping hydraulic cylinder 9 drives clamping device 14 to the operation of steel pipe centerline direction, to clamping steel pipe; After clamping device clamps steel pipe; The clamping actuating signal of sending through pressure switch 8 adds the instruction that time-delay (general 4 ~ 5 seconds) begins to start as control saw blade amount of feeding adjustment hydraulic cylinder 4; This moment, a end of electro-hydraulic proportion reversing valve 10 had input current signal; Saw blade amount of feeding adjustment hydraulic cylinder 4 drives saw blade amount of feeding guiding mechanism 11 and saw blade 13 moves to the steel pipe centerline direction; Control the flow size in the saw blade amount of feeding adjustment hydraulic control system through the amplitude size of control electro-hydraulic proportion reversing valve 10 input current signals; Thereby come the saw blade decline feeding and the speed of service that resets are controlled in conjunction with sampling saw saw blade supplying position sensor, finally realize saw blade " descend fast " finish to " feeding at a slow speed " and sawing after the function of " resetting fast "; Treat that steel pipe sampling sawing finishes; The a end no current input signal of a end outage of two four-way electromagnetic reversing valves 5, electro-hydraulic proportion reversing valve 10; The while b of two four-way electromagnetic reversing valves 5 holds electricly, the b end input of electro-hydraulic proportion reversing valve 10 needs the current signal of size; Clamping hydraulic cylinder 9 drives clamp mechanism 14; Saw blade amount of feeding adjustment hydraulic cylinder 4 drives saw blade amount of feeding guiding mechanism 11 and saw blade 13 deviates from the operation of steel pipe centerline direction, resets the clamping pressure blackout of pressure switch 8 until two hydraulic cylinders.The speed controlling of sampling saw saw blade decline feeding and homing action changes the direction of motion by electro-hydraulic proportion reversing valve through the polarity that changes current signal in this control system; Realize the control of saw blade action speed through the size that changes the current signal amplitude, and electro-hydraulic proportion reversing valve output pressure and flow are very steady can not receive the characteristic of load variations to make sampling office saw blade down maneuver the time.But its shortcoming is: surplus the more common solenoid directional control valve of the price of electro-hydraulic proportion reversing valve high 10 times, and the maintenance requirement of electro-hydraulic proportion reversing valve control system and the also more common solenoid directional control valve of fault rate are high.
Summary of the invention
The problems referred to above that hydraulic control exists to existing seamless steel pipe sampling saw; The invention provides the hydraulic control system of online seamless steel pipe sampling saw; It can be guaranteed that online seamless steel pipe sampling flowsheet is safe and reliable, control on the simple basis, reduces equipment cost and maintenance cost greatly.
The hydraulic control system of online seamless steel pipe sampling saw; Its technical scheme is such: it comprises the tight hydraulic control system of sampling saw cramp, saw blade amount of feeding adjustment hydraulic control system; The tight hydraulic control system of said sampling saw cramp comprises the clamping hydraulic cylinder; Said clamping hydraulic cylinder epicoele connects stacked unidirectional throttle valve and two-position four-way solenoid directional control valve A chamber successively through fluid pressure line; Said clamping hydraulic cylinder cavity of resorption connects pressure switch, stacked unidirectional throttle valve, stacked compression release valve and two-position four-way solenoid directional control valve B chamber successively through fluid pressure line; Said two-position four-way solenoid directional control valve P chamber is connected with working connection P, said two-position four-way solenoid directional control valve T chamber is connected with oil return line T; It is characterized in that: said saw blade amount of feeding adjustment hydraulic control system comprises saw blade amount of feeding adjustment hydraulic cylinder, superposing type electromagnetism one-way throttle valve, 3-position 4-way solenoid directional control valve; Said saw blade amount of feeding adjustment hydraulic cylinder epicoele is connected with said 3-position 4-way solenoid directional control valve A chamber through fluid pressure line; Said saw blade amount of feeding adjustment hydraulic cylinder cavity of resorption is connected with said 3-position 4-way solenoid directional control valve B chamber with said superposing type electromagnetism one-way throttle valve through fluid pressure line successively, and said 3-position 4-way solenoid directional control valve P chamber links to each other with said working connection P, and said 3-position 4-way solenoid directional control valve T chamber links to each other with said oil return line T.
It is further characterized in that:
Said saw blade amount of feeding adjustment hydraulic control system comprises the superposing type balanced valve, and said superposing type balanced valve is connected between said saw blade amount of feeding adjustment hydraulic cylinder epicoele and the said 3-position 4-way solenoid directional control valve A chamber through fluid pressure line.
Compare with existing online seamless steel pipe sampling saw hydraulic control system; Beneficial effect of the present invention is: superposing type balanced valve, superposing type electromagnetism one-way throttle valve and the 3-position 4-way solenoid directional control valve that its saw blade amount of feeding adjustment hydraulic control system adopts can reach the function of the electro-hydraulic proportion reversing valve in the existing saw blade amount of feeding adjustment hydraulic control system fully; Its guaranteed online seamless steel pipe sampling flowsheet safe and reliable, control is simple; And the existing electro-hydraulic proportion reversing valve of the overall price of superposing type balanced valve, superposing type electromagnetism one-way throttle valve and 3-position 4-way solenoid directional control valve and maintenance cost is low, so greatly reduce system equipment and maintenance cost; And therefore system is equipped with the superposing type balanced valve; So unidirectional equilibrium function of oil circuit between saw blade amount of feeding adjustment hydraulic cylinder A end and the said 3-position 4-way solenoid directional control valve A chamber; Drive saw blade amount of feeding guiding mechanism and saw blade when the steel pipe centerline direction moves at saw blade amount of feeding adjustment hydraulic cylinder; Can guarantee the pressure that saw blade amount of feeding adjustment hydraulic cylinder rod chamber hydraulic oil forms one and the saw body deadweight of taking a sample balances each other through adjustment superposing type balanced valve equalizing pressure; Thereby avoid defectives such as the sampling saw is severe in shake in steel pipe centerline direction running, hydraulic system pressure impact fluctuation is big, further guarantee the safe and reliable of online seamless steel pipe sampling flowsheet.
Description of drawings
Fig. 1 is this online seamless steel pipe sampling saw tool structure diagram;
Fig. 2 is the hydraulic control system structure chart of existing sampling saw;
Fig. 3 is a hydraulic control system structure chart of the present invention.
The specific embodiment
As shown in Figure 3; The hydraulic control system of online seamless steel pipe sampling saw; Comprise the tight hydraulic control system of sampling saw cramp, saw blade amount of feeding adjustment hydraulic control system; The tight hydraulic control system of sampling saw cramp comprises clamping hydraulic cylinder 9; Clamping hydraulic cylinder 9 epicoeles connect one-way throttle valve 7 and two-position four-way solenoid directional control valve 5A chamber successively through fluid pressure line; Clamping hydraulic cylinder 9 cavity of resorptions connect pressure switch 8, stacked unidirectional throttle valve 7, stacked compression release valve 6 and two-position four-way solenoid directional control valve 5B chamber successively through fluid pressure line; Two-position four-way solenoid directional control valve 5P chamber is connected with working connection P, two-position four-way solenoid directional control valve 5T chamber is connected with oil return line T; Saw blade amount of feeding adjustment hydraulic control system comprises saw blade amount of feeding adjustment hydraulic cylinder 4, superposing type electromagnetism one-way throttle valve 2,3-position 4-way solenoid directional control valve 1; Saw blade amount of feeding adjustment hydraulic cylinder 4 epicoeles are connected with 3-position 4-way solenoid directional control valve 1A chamber through fluid pressure line, and saw blade amount of feeding adjustment hydraulic cylinder 4 cavity of resorptions are connected with 3-position 4-way solenoid directional control valve 1B chamber with superposing type electromagnetism one-way throttle valve 2 through fluid pressure line successively, and 3-position 4-way solenoid directional control valve 1T chamber links to each other with oil return line T, the P chamber links to each other with working connection P; Saw blade amount of feeding adjustment hydraulic control system comprises superposing type balanced valve 3, and superposing type balanced valve 3 is connected between saw blade amount of feeding adjustment hydraulic cylinder 4 epicoeles and the 3-position 4-way solenoid directional control valve 1A chamber through fluid pressure line.
Specifically describe operation principle of the present invention below: the outlet pressure of adjustment stacked compression release valve 6 satisfies it and clamps requirement; The opening degree of adjustment stacked unidirectional throttle valve 7 is with the speed of service of control clamping hydraulic cylinder 9; Adjustment superposing type electromagnetism one-way throttle valve 2 the opening degree when electric, the speed of service when feeding descends at a slow speed with the control saw blade; The equalizing pressure of adjustment superposing type balanced valve 3 operates steadily when descending with the assurance saw blade.Clamp mechanism receives when clamping the steel pipe instruction, and a of two four-way electromagnetic reversing valves 5 holds electricly, and clamping hydraulic cylinder 9 drives clamp mechanism 14 to the operation of steel pipe centerline direction, to clamping steel pipe; After clamp mechanism clamps steel pipe; The clamping actuating signal of sending through pressure switch 8 adds the instruction that time-delay (general 4 ~ 5 seconds) begins to start as control saw blade amount of feeding adjustment hydraulic cylinder 4; This moment, a end and the superposing type electromagnetism one-way throttle valve 2 of three position four-way directional control valve 1 got; Saw blade amount of feeding adjustment hydraulic cylinder 4 drives saw blade amount of feeding guiding mechanism 11 and saw blade 13 descends to the steel pipe centerline direction fast, when sampling saw saw blade supplying position sensor detects saw blade 13 soon near steel pipe, and 2 outages of superposing type electromagnetism one-way throttle valve; Saw blade amount of feeding adjustment this moment hydraulic cylinder 4 drive saw blade amount of feeding guiding mechanisms 11 and saw blade 13 are to the feeding at a slow speed of steel pipe centerline direction; Treat that steel pipe sampling sawing finishes, a end outage simultaneously of a end of two four-way electromagnetic reversing valves 5, three position four-way directional control valve 1, the b end of the b of two four-way electromagnetic reversing valves 5 end, three position four-way directional control valve 1 is simultaneously simultaneously; Clamping hydraulic cylinder 9 drives clamp mechanism 14; Saw blade amount of feeding adjustment hydraulic cylinder 4 drives saw blade amount of feeding guiding mechanism 11 and saw blade 13 deviates from the operation of steel pipe centerline direction, resets the clamping pressure blackout of pressure switch 8 until two hydraulic cylinders.
Claims (2)
1. the hydraulic control system of online seamless steel pipe sampling saw; It comprises the tight hydraulic control system of sampling saw cramp, saw blade amount of feeding adjustment hydraulic control system; The tight hydraulic control system of said sampling saw cramp comprises the clamping hydraulic cylinder; Said clamping hydraulic cylinder epicoele connects stacked unidirectional throttle valve and two-position four-way solenoid directional control valve A chamber successively through fluid pressure line; Said clamping hydraulic cylinder cavity of resorption connects pressure switch, stacked unidirectional throttle valve, stacked compression release valve and two-position four-way solenoid directional control valve B chamber successively through fluid pressure line; Said two-position four-way solenoid directional control valve P chamber is connected with working connection P, said two-position four-way solenoid directional control valve T chamber is connected with oil return line T; It is characterized in that: said saw blade amount of feeding adjustment hydraulic control system comprises saw blade amount of feeding adjustment hydraulic cylinder, superposing type electromagnetism one-way throttle valve, 3-position 4-way solenoid directional control valve; Said saw blade amount of feeding adjustment hydraulic cylinder epicoele is connected with said 3-position 4-way solenoid directional control valve A chamber through fluid pressure line; Said saw blade amount of feeding adjustment hydraulic cylinder cavity of resorption is connected with said 3-position 4-way solenoid directional control valve B chamber with said superposing type electromagnetism one-way throttle valve through fluid pressure line successively, and said 3-position 4-way solenoid directional control valve P chamber links to each other with said working connection P, and said 3-position 4-way solenoid directional control valve T chamber links to each other with said oil return line T.
2. the hydraulic control system of online seamless steel pipe sampling saw according to claim 1; It is characterized in that: said saw blade amount of feeding adjustment hydraulic control system comprises the superposing type balanced valve, and said superposing type balanced valve is connected between said saw blade amount of feeding adjustment hydraulic cylinder epicoele and the said 3-position 4-way solenoid directional control valve A chamber through fluid pressure line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102078711A CN102699433A (en) | 2012-06-25 | 2012-06-25 | Hydraulic control system of on-line seamless steel pipe sampling saw |
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| CN2012102078711A CN102699433A (en) | 2012-06-25 | 2012-06-25 | Hydraulic control system of on-line seamless steel pipe sampling saw |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971569A (en) * | 2018-01-15 | 2018-05-01 | 张家港市蓝田管业设备有限公司 | Air pressure portable multi-angle cuts circular sawing machine |
| CN108907336A (en) * | 2018-06-20 | 2018-11-30 | 谭明 | Numerical-control double-station cutting machine and its control method |
| CN109469657A (en) * | 2018-12-26 | 2019-03-15 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and drilling machine |
| CN111306120A (en) * | 2020-02-24 | 2020-06-19 | 吉林大学 | Rapid feeding device and control method thereof |
| CN111615942A (en) * | 2020-05-29 | 2020-09-04 | 苏州朵唯智能科技有限公司 | Pneumatic gripping clamping jaw system for grafted seedlings |
| CN113864276A (en) * | 2021-10-18 | 2021-12-31 | 山东泰丰智能控制股份有限公司 | Hydraulic speed regulation control system and hydraulic machine |
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| CN201913316U (en) * | 2010-11-25 | 2011-08-03 | 浙江伟业锯床有限公司 | Intelligent band sawing machine |
| CN202239917U (en) * | 2011-09-09 | 2012-05-30 | 攀钢集团攀枝花钢钒有限公司 | Hydraulic system of heat saw and heat saw |
| CN202667795U (en) * | 2012-06-25 | 2013-01-16 | 无锡西姆莱斯石油专用管制造有限公司 | Hydraulic control system for on-line seamless steel tube sampling saw |
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Patent Citations (5)
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| CN200963712Y (en) * | 2006-10-19 | 2007-10-24 | 李鹏伟 | Hydraulic control apparatus for sawing machine |
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| CN202667795U (en) * | 2012-06-25 | 2013-01-16 | 无锡西姆莱斯石油专用管制造有限公司 | Hydraulic control system for on-line seamless steel tube sampling saw |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971569A (en) * | 2018-01-15 | 2018-05-01 | 张家港市蓝田管业设备有限公司 | Air pressure portable multi-angle cuts circular sawing machine |
| CN108907336A (en) * | 2018-06-20 | 2018-11-30 | 谭明 | Numerical-control double-station cutting machine and its control method |
| CN108907336B (en) * | 2018-06-20 | 2024-01-12 | 谭明 | Control method of numerical control double-station cutting machine |
| CN109469657A (en) * | 2018-12-26 | 2019-03-15 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and drilling machine |
| CN109469657B (en) * | 2018-12-26 | 2024-02-02 | 江苏徐工工程机械研究院有限公司 | Hydraulic system and drilling machine |
| CN111306120A (en) * | 2020-02-24 | 2020-06-19 | 吉林大学 | Rapid feeding device and control method thereof |
| CN111306120B (en) * | 2020-02-24 | 2021-03-02 | 吉林大学 | Rapid feeding device and control method thereof |
| CN111615942A (en) * | 2020-05-29 | 2020-09-04 | 苏州朵唯智能科技有限公司 | Pneumatic gripping clamping jaw system for grafted seedlings |
| CN113864276A (en) * | 2021-10-18 | 2021-12-31 | 山东泰丰智能控制股份有限公司 | Hydraulic speed regulation control system and hydraulic machine |
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Application publication date: 20121003 |