CN101982394A - Electric hoist with overspeed protective device - Google Patents
Electric hoist with overspeed protective device Download PDFInfo
- Publication number
- CN101982394A CN101982394A CN 201010542864 CN201010542864A CN101982394A CN 101982394 A CN101982394 A CN 101982394A CN 201010542864 CN201010542864 CN 201010542864 CN 201010542864 A CN201010542864 A CN 201010542864A CN 101982394 A CN101982394 A CN 101982394A
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- CN
- China
- Prior art keywords
- electric block
- control box
- control unit
- rotary encoder
- electric hoist
- 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.)
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- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses an electric hoist with an overspeed protective device, comprising a support assembly, a bearing block supported at one end of the support assembly and a second control box, wherein the second control box is provided with a PLC control unit; the bearing block is provided with a support frame; the support frame is fixedly provided with a rotary encoder; the rotary encoder is connected with a digital input module on the PLC control unit in the second control box by an encoder cable; and a digital output module on the PLC control unit is connected with a control circuit in a main control box of the electric hoist by a conductor. The electric hoist has simple structure, the rotary encoder is only installed on the roll support frame and the rotary pulse value of the rotary encoder is transferred to the PLC, thus the working state of the hoist roll speed can be monitored, the lifting speed of the electric hoist is accurately tracked and the safety performance of the electric hoist is improved.
Description
Technical field
The present invention relates to a kind of electric block.Particularly relate to a kind of electric block that has overspeed protection device that can monitor Motor Driven Elevating Calabash speed in real time.
Background technology
Hoisting crane is widely used in fields such as metallurgy, machinery, chemical industry, oil, the energy, and electric block is a component part important in the hoisting crane, because the particularity of many working spaces, the user worries that goods can cause electric block stall for a certain reason in the process of lifting, loading and unloading, thereby brings very great loss.Therefore, need overspeed protection device be installed on electric block, avoid the generation of accident.Thereby the safety performance of electric block is improved greatly, and cucurbit lifting mechanism one exceeds the speed limit, and makes two drg place in operations of cucurbit immediately, prevents unexpected the generation.
Summary of the invention
Technical matters to be solved by this invention is that a kind of electric block that has overspeed protection device that can monitor lifting motor at the rising or falling speed of each point is provided.
The technical solution adopted in the present invention is: a kind of electric block that has overspeed protection device; include the support assembling of electric block and be supported on the bearing seat that support assembles an end; also be provided with electric block second control box; be provided with the PLC control unit in described electric block second control box; described bearing seat is provided with bracing frame; be set with rotary encoder on the described bracing frame; described rotary encoder is connected by the digital input module on the PLC control unit in coder cable and electric block second control box, and the digital output module on the described PLC control unit connects on the control circuit in the electric block main control box by lead.
Described coder cable is two hinge shielded cables.
Digital output module on the described PLC control unit is by on the intermediate relay in the control circuit in the lead connection electric block main control box.
The electric block that has overspeed protection device of the present invention; simple in structure; only need rotary encoder is installed on the roll support frame; in cucurbit second control box, PLC is installed; with rotary encoder read rotary pulsed numerical value; be transferred on the PLC through twin-core multiple twin shielding wire, numerical value can read in real time.Thereby can monitor cucurbit reel speed operation state, make Motor Driven Elevating Calabash speed accurately tracked, improve the safety performance of electric block.
Description of drawings
Fig. 1 is a local structure scheme drawing of the present invention;
Fig. 2 is an integral structure scheme drawing of the present invention;
Fig. 3 is the lateral plan of Fig. 2.
Label among the figure is respectively:
The assembling of 1-support; 2-bearing seat; 3-bracing frame; 4-rotary encoder; 5-screw M3X10; 6-screw M6X16; 7-electric block; 8-electric block, second control box.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the electric block that has overspeed protection device of the present invention is made a detailed description.
As Fig. 1; Fig. 2; shown in Figure 3; the electric block that has overspeed protection device of the present invention; include with the support assembling 1 of the output shaft bonded assembly electric block of electric block and be supported on the bearing seat 2 that support assembles 1 one ends; also be provided with electric block second control box 8; be provided with the PLC control unit in described electric block second control box 8; described bearing seat 2 is provided with bracing frame 3; be set with rotary encoder 4 on the described bracing frame 3; described rotary encoder 4 is connected by the digital input module on the PLC control units in coder cable and electric block second control box 8; described coder cable is two hinge shielded cables; described PLC control unit is provided with digital input interface, and carries out communication by the multiple twin shielded cable.Digital output module on the described PLC control unit connects on the control circuit in the main control box that electric block 1 itself has by lead, and the digital output module on the PLC control unit of the present invention connects on the intermediate relay in the control circuit in the main control box that electric block 1 itself has by lead.
The selected PLC model of present embodiment is: FX1S-10MR, described electric block are the motors that has dual brake.
The principle of work of the electric block that has an overspeed protection device of the present invention is as follows:
When the motor power that has dual brake is connected, assembling of driven by motor support and rotary encoder rotate together, the moment that rotary encoder rotates produces pulse, the support assembling is whenever turned around and is produced 2048 pulses, rotary encoder rotates the pulse count that produces and is input in the digital input module of PLC by the multiple twin shielded cable, PLC instructs by impulse density inside, calculate the pulse count in the certain hour, just can calculate the rotative speed of reel, thereby know the rising or falling speed of motor, compare with known motor command speed, if in command speed, PLC normally exports, if the actual speed of the motor that PLC calculates is greater than 10% of command speed, then the digital output module of PLC makes lifting mechanism stop output, the power supply of the lifting mechanism that breaks by the control circuit output command of lead in the main control box that motor itself has, and make first drg action of motor, second drg is braking simultaneously also.
The overspeed protection device that has of the present invention, owing to added overspeed protection device at electric block, the danger of having avoided the motor hypervelocity to bring simultaneously, has improved the safety of electric block itself.
Claims (3)
1. electric block that has overspeed protection device; include the support assembling (1) of electric block and be supported on the bearing seat (2) that support assembles (1) one end; it is characterized in that; also be provided with electric block second control box (8); be provided with the PLC control unit in described electric block second control box (8); described bearing seat (2) is provided with bracing frame (3); be set with rotary encoder (4) on the described bracing frame (3); described rotary encoder (4) is connected with digital input module on the interior PLC control unit of electric block second control box (8) by the coder cable, and the digital output module on the described PLC control unit connects on the control circuit in electric block (1) main control box by lead.
2. the electric block that has overspeed protection device according to claim 1 is characterized in that, described coder cable is two hinge shielded cables.
3. the electric block that has overspeed protection device according to claim 1 is characterized in that, the digital output module on the described PLC control unit connects on the intermediate relay in the control circuit in electric block (1) main control box by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010542864 CN101982394A (en) | 2010-11-15 | 2010-11-15 | Electric hoist with overspeed protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010542864 CN101982394A (en) | 2010-11-15 | 2010-11-15 | Electric hoist with overspeed protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101982394A true CN101982394A (en) | 2011-03-02 |
Family
ID=43619309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010542864 Pending CN101982394A (en) | 2010-11-15 | 2010-11-15 | Electric hoist with overspeed protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101982394A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807171A (en) * | 2011-05-31 | 2012-12-05 | 株式会社日立产机*** | Chain type electric hoist |
| CN103723647A (en) * | 2013-12-04 | 2014-04-16 | 山东金阳矿业集团有限公司 | Overspeed protection intelligent detection control device used for haulage hoist |
| CN114455494A (en) * | 2021-06-01 | 2022-05-10 | 中嘉建盛建工集团有限公司 | Assembled building panel hoist device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201424351Y (en) * | 2009-04-29 | 2010-03-17 | 中国有色（沈阳）冶金机械有限公司 | Winch mechanism with the function of limiting super elevation and over speed |
| CN201580936U (en) * | 2009-12-02 | 2010-09-15 | 徐州海华电气设备有限公司 | Over-stroke protector for hoister |
| CN201587763U (en) * | 2009-09-28 | 2010-09-22 | 贵阳高原矿山机械有限公司 | Numerically-controlled frequency-variable speed-adjustable system of mine hoist |
| US20100237306A1 (en) * | 2009-03-17 | 2010-09-23 | J. R. Clancy, Inc. | Hoist with Overspeed Protection |
| CN201882841U (en) * | 2010-11-15 | 2011-06-29 | 天津起重设备有限公司 | Electric block with overspeed protective device |
-
2010
- 2010-11-15 CN CN 201010542864 patent/CN101982394A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100237306A1 (en) * | 2009-03-17 | 2010-09-23 | J. R. Clancy, Inc. | Hoist with Overspeed Protection |
| CN201424351Y (en) * | 2009-04-29 | 2010-03-17 | 中国有色（沈阳）冶金机械有限公司 | Winch mechanism with the function of limiting super elevation and over speed |
| CN201587763U (en) * | 2009-09-28 | 2010-09-22 | 贵阳高原矿山机械有限公司 | Numerically-controlled frequency-variable speed-adjustable system of mine hoist |
| CN201580936U (en) * | 2009-12-02 | 2010-09-15 | 徐州海华电气设备有限公司 | Over-stroke protector for hoister |
| CN201882841U (en) * | 2010-11-15 | 2011-06-29 | 天津起重设备有限公司 | Electric block with overspeed protective device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807171A (en) * | 2011-05-31 | 2012-12-05 | 株式会社日立产机*** | Chain type electric hoist |
| CN102807171B (en) * | 2011-05-31 | 2016-06-29 | 株式会社日立产机*** | Chain type electric hoist |
| CN103723647A (en) * | 2013-12-04 | 2014-04-16 | 山东金阳矿业集团有限公司 | Overspeed protection intelligent detection control device used for haulage hoist |
| CN114455494A (en) * | 2021-06-01 | 2022-05-10 | 中嘉建盛建工集团有限公司 | Assembled building panel hoist device |
| CN114455494B (en) * | 2021-06-01 | 2023-11-21 | 中嘉建盛建工集团有限公司 | Assembled building board hoist device |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110302 |