CN2678791Y - Replacer lifting platform of roll bearing housing - Google Patents
Replacer lifting platform of roll bearing housing Download PDFInfo
- Publication number
- CN2678791Y CN2678791Y CN 200320114606 CN200320114606U CN2678791Y CN 2678791 Y CN2678791 Y CN 2678791Y CN 200320114606 CN200320114606 CN 200320114606 CN 200320114606 U CN200320114606 U CN 200320114606U CN 2678791 Y CN2678791 Y CN 2678791Y
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- China
- Prior art keywords
- hydraulic cylinder
- hydraulic
- lifting platform
- control device
- servo
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- Expired - Lifetime
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Abstract
The utility model discloses a replacer lifting platform of roll bearing housings, which comprises a base, a fixed frame, a movable frame, a hydraulic cylinder and a control device. The hydraulic cylinder is fixed on the base. A piston rod of the hydraulic cylinder is connected with the movable frame. The control device adopts a hydraulic servo control device which is a close control loop controlling the piston rod of the hydraulic cylinder. The hydraulic servo control device comprises a displacement sensor, a command signal setting device, a comparing element, a servo amplifier, a hydraulic control valve set and a hydraulic cylinder which are connected in turn. The displacement sensor is fixedly connected with the hydraulic cylinder. A sensing head of the displacement sensor is arranged in the cavity of the piston rod. An electrical displacement signal is electrically connected with the comparing element through a conducting wire. The utility model has the advantages of high control precision, error within 0.025 mm, and high work efficiency, the utility model is suitable for disassembling common roller bearing housings in metallurgy rolling mills, particularly the replacer lifting platform of roller bearing housings, with very high accuracy of the height alignment of the roller bearing housings.
Description
Technical field
The utility model relates to a kind of roll bearing box changer, relates in particular to a kind of roll bearing box changer lifting platform.
Background technology
During steel rolling is produced, need often to change roll, need to dismantle, install the bearing housing of roll when changing roll, workload is bigger, is equipped with a kind of roll bearing box changer of special use at present on the steel rolling production-line usually, produces needs to satisfy.The roll bearing box changer comprises two chassis of arranging in opposite directions, and there is a vertical lift platform (as shown in Figure 1) centre, and lifting platform is provided with the carrying roller of placing roll, is provided with lifting hydraulic cylinder in the lifting platform.When using roll bearing box changer dismounting roll, roll lies on the carrying roller of lifting platform, and the bearings at both ends case is fixed on the chassis, and chassis in opposite directions or counter motion is loaded onto roll with bearing housing or pulled down from roll.When bearing housing is installed, at first on chassis to the horizontal center of good bearing housing and roll, and then operation lifting hydraulic cylinder, the center of roll is aimed in vertical direction with the center of bearing housing, allowable error is very little, especially use the roll of precision bearing, allowable error is littler, and this has high control accuracy with regard to the control device that requires lifting hydraulic cylinder.
But the control device of existing lifting hydraulic cylinder is the common manual control device that adopts hydraulicdirectional control valve, choke valve, pressure valve etc. to form, control accuracy is very low, when operating personnel operate, and the height of the lifting platform that detects by an unaided eye, the button of operator dynamic control device by rule of thumb, lifting platform is not high, is exactly low, is difficult to meet the requirements of height, operating efficiency is very low, for the bigger production line of roll change amount, have to be equipped with many changers, could guarantee ordinary production.
The utility model content
The purpose of this utility model provides the roll bearing box changer lifting platform of a kind of control accuracy height, high efficiency.Key problem in technology is to adopt high-precision lifting hydraulic cylinder control device.Technical solution is:
A kind of roll bearing box changer lifting platform comprises base, fixed frame, movable machine frame, hydraulic cylinder and control device thereof; Base is fixed on the basis, and fixed frame is fixed on the base, and movable machine frame places outside the fixed frame, and is slidingly matched with fixed frame; Hydraulic cylinder is fixed on the centre of base, and its piston rod is connected with movable machine frame; It is characterized in that: described control device servo apply hydraulic pressure control device, this device are to connect and compose the close loop control circuit that the hydraulic cylinder piston throw of lever is controlled in regular turn by displacement transducer, command signal setting device, comparing element, servo amplifier, hydraulic control valve group, hydraulic cylinder; Described displacement transducer is fixedlyed connected with hydraulic cylinder, and its sensing head is positioned at the cavity of piston rod, and the displacement signal of telecommunication is electrically connected with comparing element by lead.
Described hydraulic control valve group adopts servo valve group or proportioning valve group.
Described servo valve group is made up of servo valve, overflow valve, and the servo valve electric part is electrically connected with servo amplifier, and the hydraulic part of servo valve is connected with hydraulic power source by pipe joint P, T, and its oil-out is connected with the upper and lower oil pocket of hydraulic cylinder by pipeline; The oil-in of overflow valve is connected with the lower oil cavitie of hydraulic cylinder by pipeline, and its oil return opening connects the pipe joint T of servo valve.
The utility model has the advantages that: 1, control accuracy height, error is in ± 0.025mm; 2, the time of vertical centering shortens greatly, and operating efficiency improves greatly.The utility model is not only applicable to the dismounting of the common roll bearing box of metallurgical steel rolling mill, is specially adapted to the very high roll bearing box changer lifting platform of roll bearing box height accuracy of alignment.
Description of drawings
Fig. 1 is the structure diagram of roll bearing box changer lifting platform.
Fig. 2 is the theory diagram of lifting platform hydraulic cylinder control device.
Fig. 3 is hydraulic control part-structure figure.
The specific embodiment
Referring to Fig. 1: this roll bearing box changer lifting platform comprises base 1, fixed frame 2, movable machine frame 3, hydraulic cylinder 4 and control device thereof.Base 1 is fixed by bolts on the basis, and fixed frame 2 is fixed by bolts on the base 1, and movable machine frame 3 places outside the fixed frame 2, and is slidingly matched with fixed frame 2; Hydraulic cylinder 4 is fixed on the centre of base 1, and its piston rod and movable machine frame 3 are hinged.Piston rod drives movable machine frame 3 and moves up and down, and the lifting position precision of movable machine frame 3 is by the control device control of hydraulic cylinder 4.
Referring to Fig. 2, Fig. 3: different with existing control device, the hydraulic control device that this lifting platform adopts, be to connect and compose close loop control circuit in regular turn, the stroke of piston rod is carried out precision control by displacement transducer 9, command signal setting device 5, comparing element 6, servo amplifier 7, hydraulic control valve group 8, hydraulic cylinder 4.Displacement transducer 9 is fixedly connected on the bottom of hydraulic cylinder 4, and its sensing head is positioned at the centre bore of piston rod, and the displacement signal of telecommunication is electrically connected with comparing element 6 by lead, and piston rod is upper and lower when mobile, with sensing head generation relative displacement, produces the signal of telecommunication.
Hydraulic control valve group 8 adopts the servo valve group, is made up of servo valve 10, overflow valve 11, and servo valve 10 is preferably selected the servo valve of Moog series for use, also available other high-precision servo valve or proportioning valve.
The operation principle of hydraulic servo control device is, displacement transducer 9 is converted to the signal of telecommunication with the displacement signal of piston rod, feed back to comparing element 6, comparing element 6 is with after feedback signal and the command signal comparison operation from setting device 5, the output control signal of telecommunication amplifies through servo amplifier 7, delivers to hydraulic control valve group 8, the stroke of hydraulic control valve group 8 control hydraulic cylinder piston rods is realized the precision control to the lifting platform height.
During concrete the use, need only be set in advance in the required height value of lifting platform in the command signal setting device 5, primer fluid pressure control device then, lifting platform promptly can automatic lifting to predefined desired height.
Owing to adopted above-mentioned control device, the control accuracy of lifting platform height reaches ± 0.025mm, and the time of vertical centering shortens greatly, and operating efficiency improves greatly.
This device also is provided with hand-operating device, but also manual operation.
Claims (3)
1. a roll bearing box changer lifting platform comprises base, fixed frame, movable machine frame, hydraulic cylinder and control device thereof; Base is fixed on the basis, and fixed frame is fixed on the base, and movable machine frame places outside the fixed frame, and is slidingly matched with fixed frame; Hydraulic cylinder is fixed on the centre of base, and its piston rod is connected with movable machine frame; It is characterized in that: described control device servo apply hydraulic pressure control device, this device are to connect and compose the close loop control circuit that the hydraulic cylinder piston throw of lever is controlled in regular turn by displacement transducer, command signal setting device, comparing element, servo amplifier, hydraulic control valve group, hydraulic cylinder; Described displacement transducer is fixedlyed connected with hydraulic cylinder, and its sensing head is positioned at the wall chamber of piston rod, and the displacement signal of telecommunication is electrically connected with comparing element by lead.
2. roll bearing box changer lifting platform according to claim 1 is characterized in that: described hydraulic control valve group adopts servo valve group or proportioning valve group.
3. roll bearing box changer lifting platform according to claim 2, it is characterized in that: described servo valve group is made up of servo valve, overflow valve, the servo valve electric part is electrically connected with servo amplifier, the hydraulic part of servo valve is connected with hydraulic power source by pipe joint (P, T), and its oil-out is connected with the upper and lower oil pocket of hydraulic cylinder by pipeline; The oil-in of overflow valve is connected with the lower oil cavitie of hydraulic cylinder by pipeline, and its oil return opening connects the pipe joint (T) of servo valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320114606 CN2678791Y (en) | 2003-11-13 | 2003-11-13 | Replacer lifting platform of roll bearing housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320114606 CN2678791Y (en) | 2003-11-13 | 2003-11-13 | Replacer lifting platform of roll bearing housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2678791Y true CN2678791Y (en) | 2005-02-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320114606 Expired - Lifetime CN2678791Y (en) | 2003-11-13 | 2003-11-13 | Replacer lifting platform of roll bearing housing |
Country Status (1)
| Country | Link |
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| CN (1) | CN2678791Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588843C (en) * | 2007-12-05 | 2010-02-10 | 中国重型机械研究院 | Hydraulic up-down swing mechanism |
| CN102878125A (en) * | 2012-09-30 | 2013-01-16 | 徐州大亚自动装备有限公司 | Closed-loop control system of hydraulic window opener |
| CN103671305A (en) * | 2013-12-18 | 2014-03-26 | 中国原子能科学研究院 | Synchronous hydraulic lifting device for circular accelerator |
| CN107654404A (en) * | 2017-08-16 | 2018-02-02 | 张元杰 | A kind of axial flow fan with adjustable moving blades hydraulic control actuator |
| CN107917122A (en) * | 2017-12-20 | 2018-04-17 | 江苏天宏自动化科技有限公司 | A kind of band feedback servo hydraulic drive mechanism |
| CN110241716A (en) * | 2019-06-25 | 2019-09-17 | 石家庄铁道大学 | A kind of hydraulic active control vibration damping holder for railway emergency first-aid repair steel truss girder |
| CN110340152A (en) * | 2019-07-31 | 2019-10-18 | 首钢京唐钢铁联合有限责任公司 | Tandem mills and its dam roll assembly, lift control system and method |
-
2003
- 2003-11-13 CN CN 200320114606 patent/CN2678791Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588843C (en) * | 2007-12-05 | 2010-02-10 | 中国重型机械研究院 | Hydraulic up-down swing mechanism |
| CN102878125A (en) * | 2012-09-30 | 2013-01-16 | 徐州大亚自动装备有限公司 | Closed-loop control system of hydraulic window opener |
| CN103671305A (en) * | 2013-12-18 | 2014-03-26 | 中国原子能科学研究院 | Synchronous hydraulic lifting device for circular accelerator |
| CN107654404A (en) * | 2017-08-16 | 2018-02-02 | 张元杰 | A kind of axial flow fan with adjustable moving blades hydraulic control actuator |
| CN107917122A (en) * | 2017-12-20 | 2018-04-17 | 江苏天宏自动化科技有限公司 | A kind of band feedback servo hydraulic drive mechanism |
| CN110241716A (en) * | 2019-06-25 | 2019-09-17 | 石家庄铁道大学 | A kind of hydraulic active control vibration damping holder for railway emergency first-aid repair steel truss girder |
| CN110340152A (en) * | 2019-07-31 | 2019-10-18 | 首钢京唐钢铁联合有限责任公司 | Tandem mills and its dam roll assembly, lift control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DUAL GROUP (DEYANG) HEAVY EQUIPMENT CORP. Free format text: FORMER OWNER: CHINA SECOND HEAVY MACHINERY GROUP CO Effective date: 20071109 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071109 Address after: 618013 No. 460 Zhujiang West Road, Sichuan, Deyang Patentee after: Erzhong Group Deyang Heavy Equipment Co., Ltd. Address before: 618013 No. 1, Zhujianglu Road, Sichuan, Deyang Patentee before: China Second Heavy Machinery Group Co |
|
| ASS | Succession or assignment of patent right |
Owner name: CHINA SECOND HEAVY MACHINERY GROUP CO Free format text: FORMER OWNER: DUAL GROUP (DEYANG) HEAVY EQUIPMENT CORP. Effective date: 20100323 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100323 Address after: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee after: China Second Heavy Machinery Group Co Address before: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee before: Erzhong Group (Deyang) Heavy Equipment Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131113 Granted publication date: 20050216 |