CN202657907U - System for detecting and identifying state of lifting table - Google Patents
System for detecting and identifying state of lifting table Download PDFInfo
- Publication number
- CN202657907U CN202657907U CN 201220002052 CN201220002052U CN202657907U CN 202657907 U CN202657907 U CN 202657907U CN 201220002052 CN201220002052 CN 201220002052 CN 201220002052 U CN201220002052 U CN 201220002052U CN 202657907 U CN202657907 U CN 202657907U
- Authority
- CN
- China
- Prior art keywords
- coder
- stay cord
- bay
- base
- lift
- 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
Landscapes
- Emergency Lowering Means (AREA)
Abstract
The utility model relates to a system for detecting and identifying the state of a lifting table. The system comprises a pull rope coder and a programmable logic controller (PLC), wherein the pull rope coder is fixed on a base; the output end of the pull rope coder is connected with the input end of the PLC; and the pull rope end of the pull rope coder is connected to an upper table top. The system is characterized by also comprising an electromagnetic proximity switch, wherein the electromagnetic proximity switch is connected with the input end of the PLC and arranged on a wheel shaft of a lower supporting wheel; a plurality of grid strip holes are formed on the side edge of the base by carving to form a grid coded disc with certain length; and when the lower supporting wheel walks along the length direction of the grid coded disc, the electromagnetic proximity switch is matched with the grid coded disc to generate pulse with a certain frequency and transmits the pulse to the PLC. By the system, the failure state of the pull rope coder can be timely detected, and the safety and reliability of the lifting table are greatly improved.
Description
Technical field
The utility model belongs to technical field of conveying machinery, relates to the bay-lift location recognition, falls the electrical design technology of state recognition, specifically a kind of bay-lift state-detection recognition system.
Background technology
Bay-lift is as the common equipment in the delivery system; its electric control system need to be carried out real-time confirmation to its adjustable height and operating mode; under special circumstances; when for example screw mandrel fracture, motor internal contracting brake inefficacy appear in bay-lift; electric control system is wanted in time to find to fall state; and in time respond by fall-proofing device, with protection operating personal and equipment.
The state-detection of present common bay-lift only relies on the stay cord coder to realize, there is following defective in it: constantly enter stay cord coder inner [wuyin's1] because dust can be followed stay cord, cause the mal of the inefficacy of stay cord coder or numerical value, after the long-term use of stay cord coder also the stay cord wear and rupture may appear, the detection inefficacy that may cause adjustable height and fall state, thus cause occurring potential safety hazard.
Summary of the invention
The purpose of this utility model is to overcome the prior art above shortcomings, a kind of detection recognition system of the bay-lift operating mode being carried out multiple affirmation is provided, the failure state that it can in time detect the stay cord coder improves safety and the reliability of bay-lift greatly.
The technical scheme that provides according to the utility model: bay-lift state-detection recognition system, described bay-lift comprises base, upper table surface and scissors mechanism; Described scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on the bay-lift both sides, and every group of scissors mechanism all cut yoke outward and formed by cutting yoke and one in one, in cut yoke and cut yoke outward and utilize bearing pin to be hinged at the middle part; In cut the yoke lower end and base hinged, in cut yoke upper end and be supported on the upper table surface by the upper support wheel; Cut the yoke upper end outward hinged with upper table surface, cut the yoke lower end outward and be supported on the base by the lower support wheel; Described detection recognition system comprises stay cord coder and PLC controller, and the stay cord coder is fixed on the base, and the mouth of stay cord coder links to each other with the input end of PLC controller, and stay cord one end of stay cord coder is connected on the upper table surface; It is characterized in that: described detection recognition system also includes the electromagnetic type approach switch, and the electromagnetic type approach switch links to each other with the input end of PLC controller, and the electromagnetic type approach switch is installed on the wheel shaft of lower support wheel; Some bar-grating shape cylindrical voids have been engraved on the described chassis side edge, formation has the grid shape code dish of certain-length, when described lower support wheel was walked along the length direction of grid shape code dish, the electromagnetic type approach switch matched with grid shape code dish, and the pulse that produces certain frequency also transfers to the PLC controller.
The utility model compared with prior art, advantage is: the utility model adopts the stay cord coder to carry out the bay-lift state recognition in conjunction with the electromagnetic type approach switch, with high-precision stay cord coder as main detecting element, during normal condition, the adjustable height of bay-lift and fall state and all rely on the stay cord coder to provide.Being aided with simultaneously cheaply, the electromagnetic type approach switch detects, both contrast mutually, thereby can in time find stay cord coder failure state, prevent because the problem that the stay cord coder lost efficacy and brings has improved safety and the reliability that detects recognition system greatly with extremely low cost.
Description of drawings
Fig. 1 is state-detection recognition system structural representation of the present utility model.
Fig. 2 is state-detection recognition system fundamental diagram of the present utility model.
Description of reference numerals: cut yoke, 3-in 1-base, the 2-and cut yoke, 4-upper table surface, 5-stay cord coder, 6-grid shape code dish, 7-lower support wheel, 8-electromagnetic type approach switch outward.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
State-detection recognition system described in the utility model is applied on the bay-lift, for detection of the operating mode of bay-lift.Described bay-lift comprises base 1, upper table surface 4 and scissors mechanism; Described scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on the bay-lift both sides, and every group of scissors mechanism all cut yoke 3 outward and formed by cutting yoke 2 and one in one, in cut yoke 2 and cut yoke 3 outward and utilize bearing pin to be hinged at the middle part; In cut yoke 2 lower ends and base 1 hinged, in cut yoke 2 upper ends and be supported on the upper table surface 4 by upper support wheel; Cut yoke 3 upper ends and upper table surface 4 outward hinged, cut yoke 3 lower ends outward and be supported on the base 1 by lower support wheel 7; Described detection recognition system comprises stay cord coder 5 and PLC controller, and stay cord coder 5 is fixed on the base 1, and the mouth of stay cord coder 5 links to each other with the input end of PLC controller, and stay cord one end of stay cord coder 5 is connected on the upper table surface 4; It is characterized in that: described detection recognition system also includes electromagnetic type approach switch 8, and electromagnetic type approach switch 8 links to each other with the input end of PLC controller, and electromagnetic type approach switch 8 is installed on the wheel shaft of lower support wheel 7; Some bar-grating shape cylindrical voids have been engraved on described base 1 lateral edges, formation has the grid shape code dish 6 of certain-length, when described lower support wheel 7 was walked along the length direction of grid shape code dish 6, electromagnetic type approach switch 8 matched with grid shape code dish 6, and the pulse that produces certain frequency also transfers to the PLC controller.
Concrete applicable cases of the present utility model is as follows:
As shown in Figure 2, bay-lift state-detection recognition system of the present utility model detects the impulse rate of stay cord coder 5 numerical value change and electromagnetic type approach switch 8 simultaneously, through mutually comparison, whether normally detects the bay-lift state.If the greatest limit speed of the rise and fall of bay-lift is Vmax, when surpassing this terminal speed, it is unusual that the detection recognition system is judged as operating elevating platform.It detects identification and mainly is divided into following several respects:
1, detects as the basis take stay cord coder 5 numerical value change: the numerical value change maxim Δ in default 5 unit time of stay cord coder.The real-time height of bay-lift is directly read by stay cord coder 5 data, when bay-lift falls, bay-lift upper table surface 4 descends highly rapidly, stay cord coder 5 numerical value are also followed sharply and are diminished, stay cord coder 5 numerical value change value Δs when the unit time that real-time detection obtains ' when surpassing Δ, illustrating that bay-lift is in falls state, and operating elevating platform is unusual, need in time locking braking liquid cylinder pressure, simultaneously outage this moment.
2, the impulse rate take electromagnetic type approach switch 8 detects as auxiliary: default electromagnetic type approach switch 8 impulse rate maxim Υ, when the electromagnetic type approach switch 8 impulse rate Υ ' that obtain when real-time detection surpass Υ, illustrating that bay-lift is in falls state, operating elevating platform is unusual, need in time locking braking liquid cylinder pressure, simultaneously outage this moment.
3, detect according to the conversion rule: contrast in real time Δ ' and Υ ', because Δ ' and Υ ' with the bay-lift state certain corresponding relation is arranged, so Δ ' and Υ ' also have matching relationship, if there is Δ ' and Υ ' do not mate above certain limit the time, illustrate that operating elevating platform is unusual, need in time locking braking liquid cylinder pressure, simultaneously outage this moment.
4, after bay-lift starts, not only do not detect stay cord coder 5 numerical value change but also do not detect electromagnetic type approach switch 8 impulse rates if detect recognition system in the unit time, illustrate that then operating elevating platform is unusual, need in time locking braking liquid cylinder pressure, simultaneously outage this moment.
The utility model adopts stay cord coder 5 to carry out the bay-lift state recognition in conjunction with electromagnetic type approach switch 8, with high-precision stay cord coder 5 as main detecting element, during normal condition, the adjustable height of bay-lift and fall state and all rely on stay cord coder 5 to provide.Being aided with simultaneously cheaply, electromagnetic type approach switch 8 detects, both contrast mutually, thereby can in time find stay cord coder 5 failure states, prevent because the problem that stay cord coder 5 lost efficacy and brings has improved safety and the reliability that detects recognition system greatly with extremely low cost.
Claims (1)
1. bay-lift state-detection recognition system, described bay-lift comprises base (1), upper table surface (4) and scissors mechanism; Described scissors mechanism has two groups, two groups of scissors mechanisms are symmetricly set on the bay-lift both sides, every group of scissors mechanism all cut yoke (3) outward and formed by cutting yoke (2) and one in one, in cut yoke (2) and cut yoke (3) outward and utilize bearing pin to be hinged at the middle part; In cut yoke (2) lower end and base (1) is hinged, in cut yoke (2) upper end and be supported on the upper table surface (4) by the upper support wheel; Cut yoke (3) upper end outward hinged with upper table surface (4), cut yoke (3) lower end outward and be supported on the base (1) by lower support wheel (7); Described detection recognition system comprises stay cord coder (5) and PLC controller, stay cord coder (5) is fixed on the base (1), the mouth of stay cord coder (5) links to each other with the input end of PLC controller, and stay cord one end of stay cord coder (5) is connected on the upper table surface (4); It is characterized in that: described detection recognition system also includes electromagnetic type approach switch (8), and electromagnetic type approach switch (8) links to each other with the input end of PLC controller, and electromagnetic type approach switch (8) is installed on the wheel shaft of lower support wheel (7); Some bar-grating shape cylindrical voids have been engraved on described base (1) lateral edges, formation has the grid shape code dish (6) of certain-length, when described lower support wheel (7) is walked along the length direction of grid shape code dish (6), electromagnetic type approach switch (8) matches with grid shape code dish (6), produces the pulse of certain frequency and transfers to the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220002052 CN202657907U (en) | 2012-01-05 | 2012-01-05 | System for detecting and identifying state of lifting table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220002052 CN202657907U (en) | 2012-01-05 | 2012-01-05 | System for detecting and identifying state of lifting table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202657907U true CN202657907U (en) | 2013-01-09 |
Family
ID=47452827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220002052 Expired - Lifetime CN202657907U (en) | 2012-01-05 | 2012-01-05 | System for detecting and identifying state of lifting table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202657907U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711028A (en) * | 2016-04-08 | 2016-06-29 | 袁晓忠 | Automatic refrigeration storage plate hydraulic die platform and control method |
| CN111100965A (en) * | 2019-12-12 | 2020-05-05 | 首钢京唐钢铁联合有限责任公司 | Method for controlling rising of converter cover skirt |
| CN114523943A (en) * | 2022-03-25 | 2022-05-24 | 江苏理工学院 | Vehicle auxiliary braking device and method thereof |
-
2012
- 2012-01-05 CN CN 201220002052 patent/CN202657907U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711028A (en) * | 2016-04-08 | 2016-06-29 | 袁晓忠 | Automatic refrigeration storage plate hydraulic die platform and control method |
| CN105711028B (en) * | 2016-04-08 | 2018-01-19 | 袁晓忠 | A kind of platform and control method of automatic cold storage plate hydraulic die |
| CN111100965A (en) * | 2019-12-12 | 2020-05-05 | 首钢京唐钢铁联合有限责任公司 | Method for controlling rising of converter cover skirt |
| CN114523943A (en) * | 2022-03-25 | 2022-05-24 | 江苏理工学院 | Vehicle auxiliary braking device and method thereof |
| CN114523943B (en) * | 2022-03-25 | 2022-12-23 | 江苏理工学院 | Vehicle auxiliary braking device and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203699397U (en) | Automatic disk stacking device | |
| CN202657907U (en) | System for detecting and identifying state of lifting table | |
| CN103697133B (en) | A kind of lifting device speed reducer | |
| CN104310013A (en) | Conveyor belt off-tracking warning device | |
| CN211081841U (en) | Deceleration limiting device based on coal mining machine | |
| CN202743277U (en) | Point switch control system | |
| CN204110850U (en) | A kind of conveyer belt deflection warning device | |
| CN205170097U (en) | Because protection device of encoder on car assembly interior trim lift | |
| CN205063486U (en) | A whether vehicle overweight structure for detecting transversely -moving type parking equipment is last | |
| CN205138920U (en) | Electrical contact cut resistance test device | |
| CN204958029U (en) | Elevator control system | |
| CN207698659U (en) | Main shaft garage belt conveyer band-type brake falls warning device certainly | |
| CN202245888U (en) | Automatic positioning system of windlass | |
| CN101638198A (en) | Elevator supervisory systems based on wireless network | |
| CN204588498U (en) | Dust collector on a kind of hoisting overhead travelling crane and hoisting overhead travelling crane | |
| CN201914851U (en) | Variable-frequency crane | |
| CN201534621U (en) | Limiting device | |
| CN202575787U (en) | Lifting height sensor of tower crane | |
| CN103511495A (en) | Temperature control coupler | |
| CN201232013Y (en) | Container front sling back steering axle vertical core shaft fault alarm apparatus | |
| CN202046811U (en) | Bridge-type crane | |
| CN202872348U (en) | Protection device for preventing frequent starting and power failure of frequency converter | |
| CN203820830U (en) | Brake safety device of converter ladle top blowing rod | |
| CN203187344U (en) | Crane braking control system and crane | |
| CN203608131U (en) | Driving motor control device for elevator, elevator and elevating delivery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIRACLE AUTOMATION ENGINEERING CO., LTD. Free format text: FORMER NAME: TIANQI MATERIAL FLOW SYSTEM ENGINEERING CO. LTD., JIANGSU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 214187 Jiangsu Province, Wuxi city Huishan District Luoshe town Lotus Luo Road No. 288 Patentee after: Miracle Automation Engineering Co., Ltd. Address before: 214187 Jiangsu Province, Wuxi city Huishan District Luoshe town Lotus Luo Road No. 288 Patentee before: Tianqi Material Flow System Engineering Co., Ltd., Jiangsu |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |