CN202833448U - Tilting gear overturn and reversing mechanism - Google Patents
Tilting gear overturn and reversing mechanism Download PDFInfo
- Publication number
- CN202833448U CN202833448U CN201220466321.7U CN201220466321U CN202833448U CN 202833448 U CN202833448 U CN 202833448U CN 201220466321 U CN201220466321 U CN 201220466321U CN 202833448 U CN202833448 U CN 202833448U
- Authority
- CN
- China
- Prior art keywords
- valve
- comparator
- electro
- converter
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a tilting gear overturn and reversing mechanism which comprises an electro-hydraulic proportional directional valve. A main valve hydraulic fluid port of the electro-hydraulic proportional directional valve is connected with a hydraulic fluid port of a piston type hydraulic cylinder. A piston rod of the piston type hydraulic cylinder is connected with a rack. The tilting gear overturn and reversing mechanism is characterized by further comprising a piston rod displacement sensor. The piston rod displacement sensor is connected with an analog to digital (A/D) converter. The A/D converter is connected with a comparator. The comparator is connected with a proportion integration differentiation (PID) regulator. The PID regulator is further connected with a digital to analog (D/A) converter. The D/A converter is further connected with the electro-hydraulic proportional directional valve. A valve core displacement sensor is arranged in the electro-hydraulic proportional directional valve, and is connected with an in-valve comparator. According to the in-valve comparator, comparison of valve core displacement, namely valve core opening, with a regulatory signal of a D/A sensor is carried out. According to the tilting gear overturn and reversing mechanism, synchronism is greatly improved, equipment failure rate is reduced, production efficiency is improved, security risk is reduced, and equipment maintenance setting time is reduced by more than 30%.
Description
Technical field
The utility model relates to tilting gear, relates in particular to tilting gear upset changement, belongs to the smelting iron and steel technical field.
Background technique
The existence of the seamed edge of slab need to be carried out the situation that the Manual flame cleaning could be satisfied the subsequent production technological requirement behind the metallurgical production continuous casting, to be steadily to put down after plate slab that 230 millimeters * 1650 millimeters * 11000 millimeters, weight are about 32.8 tons/part overturns and overturns boundary dimension in the Manual flame scale removal process, this need to plate slab length namely 11000 millimeters directions a plurality of hydraulic cylinder synchronous motions be set realize above-mentioned control requirement.Each liquid cylinder entity and frame thereof consist of linkage mechanism, have just produced liquid cylinder entity and frame self front and back during the hydraulic cylinder piston rod fore and aft motion and have rotated back and forth motion.The equipment of the compositions such as these oil hydraulic cylinders, frame, hydraulic system is exactly tilting gear upset changement.
Present tilting gear reversing machine is the electric-hydraulic proportion hydraulic system, adopt six～ten oil hydraulic cylinders to divide two groups of A, B, three～five oil hydraulic cylinders of A group are upset slab side, three～five oil hydraulic cylinders corresponding to B group are put the slab side for connecing, A, B group all adopts electro-hydraulic proportion reversing valve to control the propelling of each hydraulic cylinder piston rod, thus the rotary movement of finishing by the oil circuit conversion.Namely, the motion of each oil hydraulic cylinder is to be controlled by a corresponding with it electro-hydraulic proportion reversing valve, the hydraulic cylinder of three～five electro-hydraulic proportion reversing valve controls is like this finished the one-sided motion of tilting gear upset changement, six～ten hydraulic cylinders have consisted of the complete motion of tilting gear upset changement, and the movement position use angle sensor of each oil hydraulic cylinder detects feedback.Concrete structure is as follows:
Existing tilting gear upset changement adopts angle transducer, angle by instant detection oil hydraulic cylinder upset, angle signal is passed to comparator by A/D converter, after comparator compares angle signal and external input signal, signal is passed to P I D regulator, PI D regulator is passed to electro-hydraulic proportion reversing valve by D/A converter with regulated signal, electro-hydraulic proportion reversing valve is according to gained Signal Regulation spool aperture, thereby control enters the flow of oil hydraulic cylinder, oil hydraulic cylinder drives frame and overturns, angle transducer detects the angle of oil hydraulic cylinder upset again, so carries out loop control.
This tilting gear upset changement has following defective:
1) because angle transducer self measuring accuracy is lower, cause the precision of hydraulic control low, it is larger that electro-hydraulic proportion reversing valve is set the synchronism deviation of regulating difficulty, different oil hydraulic cylinders;
2) simultaneously because electro-hydraulic proportion reversing valve inside without the device of internal feedback, is not detected spool travel, only rely on angle transducer to carry out flip angle and detect, cause the oil mass inaccuracy of oil hydraulic cylinder oil-feed, also caused the large problem of hydraulic cylinder synchronous deviation.
3) because there is speed ratio in oil hydraulic cylinder, and namely the fluid flow of piston end is greater than the flow of tailpiece of the piston rod, angle transducer be difficult to fully to since the fluid flow difference of the input and output that speed ratio produces proofread and correct.
4) the tilting gear synchronization accuracy hangs down the phenomenons such as the steel billet deviation of gravity center, discontinuity even the steel billet that easily produce drop.
Summary of the invention
The technical problem that the utility model actual demand solves is: angle transducer self measuring accuracy is low, and the synchronism deviation that electro-hydraulic proportion reversing valve is regulated difficulty, different oil hydraulic cylinders is large; Electro-hydraulic proportion reversing valve causes oil hydraulic cylinder oil inlet quantity inaccuracy without the internal feedback device; Be difficult to fully different correction of input and output oil mass to producing owing to the oil hydraulic cylinder speed ratio.
The utility model has been taked following technological scheme:
Tilting gear upset changement, comprise electro-hydraulic proportion reversing valve 1, described electro-hydraulic proportion reversing valve 1 main valve hydraulic fluid port is connected with the piston-type hydraulic cylinder hydraulic fluid port, the piston rod of described piston-type hydraulic cylinder is connected with frame, also comprise the piston rod displacement transducer, described piston rod displacement transducer is connected with A/D converter, and described A/D converter is connected with comparator, and described comparator compares piston rod displacement signal and external input signal; Described comparator is connected with the PID regulator, and described PID regulator is connected with D/A converter again, and described D/A converter is connected with described electro-hydraulic proportion reversing valve again; Comprise comparator, pilot valve, main valve in valve core displacement sensor, the valve in the described electro-hydraulic proportion reversing valve 1, described valve core displacement sensor is connected with comparator in the valve, in the described valve comparator with spool travel, be that the regulated signal of spool aperture and D/A sensor compares, and regulating command sent to pilot valve, pilot valve is connected with main valve.
Further, described electro-hydraulic proportion reversing valve 1 also comprises pilot valve and main valve, and described pilot valve is connected with main valve, and described main valve is connected with valve core displacement sensor.
Characteristics of the present utility model are: adopted the piston rod displacement transducer to substitute the angle transducer of original measurement oil hydraulic cylinder angle of swing, by detecting the displacement of piston rod, the speed ratio in conjunction with existing oil hydraulic cylinder passes to comparator with displacement data; Simultaneously, be provided with the internal feedback device in the electro-hydraulic proportion reversing valve, i.e. comparator in valve core displacement sensor and valve are set up in electro-hydraulic proportion reversing valve inside, detect the aperture of valve, thereby the oil mass that control enters oil hydraulic cylinder, by valve intrinsic displacement sensor and the simultaneously oil circuit commutation of instant control tilting gear of existing displacement transducer, thereby the control tilting gear overturns.
The beneficial effects of the utility model are:
1) synchronisms of many group tilting gears improve greatly, in every group of the tilting gear between each oil hydraulic cylinder the operation synchronization error by original ± 5% be reduced to ± 0.5% in, the using effect of equipment is ideal;
2) precision of tilting gear flip angle improves greatly;
3) greatly reduce equipment failure rate, improved manufacturing efficiency, economic benefit is obvious;
4) upset of tilting gear band load is very steady, and synchronization accuracy is high, and steadily of centre of gravity is stressed even, greatly reduces security risk, and simultaneously, overhaul of the equipments is adjusted time decreased more than 30%.
Description of drawings
Fig. 1 is the connection block diagram of existing tilting gear upset changement.
Fig. 2 is the connection block diagram of tilting gear upset changement of the present utility model.
Fig. 3 is the oil circuit schematic diagram of a tilting gear.
Wherein, 1, electro-hydraulic proportion reversing valve.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
As shown in Figure 2, tilting gear upset changement, comprise electro-hydraulic proportion reversing valve 1, described electro-hydraulic proportion reversing valve 1 hydraulic fluid port is connected with the hydraulic fluid port of piston-type hydraulic cylinder, the piston rod of described piston-type hydraulic cylinder is connected with frame, also comprise the piston rod displacement transducer, the piston rod displacement transducer can detect the displacement of piston rod and with displacement, sectional area in conjunction with piston, the speed ratio of oil hydraulic cylinder, the displacement of piston rod can form one to one relation with the oil hydraulic cylinder oil inlet quantity, can control turnover according to flow and carry out stable upset, described piston rod displacement transducer is connected with A/D converter, and described A/D converter is connected with comparator, and described comparator compares piston rod displacement signal and external input signal; Described comparator is connected with the PID regulator, and described PID regulator is connected with D/A converter again, and described D/A converter is connected with described electro-hydraulic proportion reversing valve again; Comprise valve core displacement sensor in the described electro-hydraulic proportion reversing valve 1, described valve core displacement sensor is connected with comparator in the valve, spool travel and spool aperture have one to one relation, in the described valve comparator with spool travel, be that the regulated signal of spool aperture and D/A sensor compares.Described electro-hydraulic proportion reversing valve 1 also comprises pilot valve and main valve, and described pilot valve is connected with main valve, and described main valve is connected with valve core displacement sensor.
The utility model has adopted the piston rod displacement transducer to substitute the angle transducer of original measurement oil hydraulic cylinder angle of swing, and by detecting the displacement of piston rod, the speed ratio in conjunction with existing oil hydraulic cylinder passes to comparator with displacement data; Simultaneously, be provided with the internal feedback device in the electro-hydraulic proportion reversing valve, i.e. comparator in valve core displacement sensor and valve are set up in electro-hydraulic proportion reversing valve inside, detect the aperture of valve, thereby the oil mass that control enters oil hydraulic cylinder, hydraulic oil pushing piston bar in the oil hydraulic cylinder drives frame and overturns, and overturns thereby drive steel plate.Immediately control simultaneously oil circuit commutation and the oil mass of tilting gear by valve intrinsic displacement sensor and existing displacement transducer, thereby the control tilting gear overturns.
The utility model for similarly, the upset changement of the load tipping arrangement of other industry has widely promotional value.
Claims (2)
1. tilting gear upset changement comprises electro-hydraulic proportion reversing valve (1), and described electro-hydraulic proportion reversing valve (1) main valve hydraulic fluid port is connected with the piston-type hydraulic cylinder hydraulic fluid port, and the piston rod of described piston-type hydraulic cylinder is connected with frame, it is characterized in that:
Also comprise the piston rod displacement transducer, described piston rod displacement transducer is connected with A/D converter, and described A/D converter is connected with comparator, and described comparator compares piston rod displacement signal and external input signal;
Described comparator is connected with the PID regulator, and described P ID regulator is connected with D/A converter again, and described D/A converter is connected with described electro-hydraulic proportion reversing valve again;
Comprise comparator, pilot valve, main valve in valve core displacement sensor, the valve in the described electro-hydraulic proportion reversing valve (1), described valve core displacement sensor is connected with comparator in the valve, in the described valve comparator with spool travel, be that the regulated signal of spool aperture and D/A sensor compares, and regulating command sent to pilot valve, pilot valve is connected with main valve.
2. tilting gear as claimed in claim 1 upset changement, it is characterized in that: described electro-hydraulic proportion reversing valve (1) also comprises pilot valve and main valve, and described pilot valve is connected with main valve, and described main valve is connected with valve core displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220466321.7U CN202833448U (en) | 2012-09-13 | 2012-09-13 | Tilting gear overturn and reversing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220466321.7U CN202833448U (en) | 2012-09-13 | 2012-09-13 | Tilting gear overturn and reversing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833448U true CN202833448U (en) | 2013-03-27 |
Family
ID=47945163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220466321.7U Expired - Lifetime CN202833448U (en) | 2012-09-13 | 2012-09-13 | Tilting gear overturn and reversing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833448U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909582A (en) * | 2016-06-30 | 2016-08-31 | 马鞍山市致呈机电有限公司 | Hydraulic system of steel ladle hydraulic turnover device |
| CN106958548A (en) * | 2017-04-13 | 2017-07-18 | 宣化钢铁集团有限责任公司 | A kind of cold bed traversing control method synchronous based on ratio |
| CN113985930A (en) * | 2021-10-20 | 2022-01-28 | 北京京诚瑞达电气工程技术有限公司 | Method, device and system for controlling rotation angle of tilting gear |
-
2012
- 2012-09-13 CN CN201220466321.7U patent/CN202833448U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909582A (en) * | 2016-06-30 | 2016-08-31 | 马鞍山市致呈机电有限公司 | Hydraulic system of steel ladle hydraulic turnover device |
| CN106958548A (en) * | 2017-04-13 | 2017-07-18 | 宣化钢铁集团有限责任公司 | A kind of cold bed traversing control method synchronous based on ratio |
| CN106958548B (en) * | 2017-04-13 | 2018-03-30 | 宣化钢铁集团有限责任公司 | A kind of cold bed traversing control method synchronous based on ratio |
| CN113985930A (en) * | 2021-10-20 | 2022-01-28 | 北京京诚瑞达电气工程技术有限公司 | Method, device and system for controlling rotation angle of tilting gear |
| CN113985930B (en) * | 2021-10-20 | 2024-02-27 | 北京京诚瑞达电气工程技术有限公司 | Method, device and system for controlling rotation angle of steel tilting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102189237B (en) | System integration technology for dynamic soft reduction of continuously-cast billet | |
| CN202006219U (en) | Hydraulic control system | |
| CN100553813C (en) | Hydraulic pressing down system in rolling mill | |
| CN204300007U (en) | A kind of based on flow-compensated tundish car lifting leveling system | |
| CN106623834B (en) | Fan-shaped section apparatus under continuous casting steel billet weight | |
| CN202833448U (en) | Tilting gear overturn and reversing mechanism | |
| CN104368789A (en) | Die-casting die temperature control device and control method | |
| CN103920839A (en) | Hybrid synchronous balance control system of large die-forging hydraulic press | |
| BR112017009195B1 (en) | HYDRAULIC FORGING PRESS AND METHOD TO CONTROL IT | |
| CN112264595A (en) | Continuous casting blank fixed-weight cutting control system and control method of multi-flow single scale | |
| CN205949548U (en) | Seven roller straightening machines of zirconium titanium niobium alloy pipe rod high accuracy | |
| CN101758088B (en) | Cooling-bed hydraulic stepping and tread control device and control method thereof | |
| CN106958548B (en) | A kind of cold bed traversing control method synchronous based on ratio | |
| CN101088906A (en) | Process of installing multiple-tower combination of gantry | |
| CN113719307A (en) | Intelligent liquid supply system for hydraulic support and working method | |
| CN209669706U (en) | A kind of bridge construction three-dimensional synchronous push equipment | |
| CN203614479U (en) | Tundish lifting hydraulic device with high synchronization accuracy | |
| CN107504020A (en) | A kind of isothermal die forging process hydraulic system of press | |
| CN103388602B (en) | Cooperative type high-precision hydraulic pressure double-cylinder synchronizing system and control method thereof | |
| CN104174824A (en) | Online width adjusting system for slab caster mould | |
| CN103372996B (en) | Sliding part motion control apparatus for punching machine | |
| CN206545617U (en) | A kind of pans lowering or hoisting gear | |
| CN110102730B (en) | Casting method of crystallizer | |
| CN102363345A (en) | Control system for leveling four corners of hydraulic press | |
| CN104358725B (en) | Synchronized cylinder controls pans lowering or hoisting gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |