CN203903883U - Stepless frequency control electric block - Google Patents
Stepless frequency control electric block Download PDFInfo
- Publication number
- CN203903883U CN203903883U CN201420231702.6U CN201420231702U CN203903883U CN 203903883 U CN203903883 U CN 203903883U CN 201420231702 U CN201420231702 U CN 201420231702U CN 203903883 U CN203903883 U CN 203903883U
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- CN
- China
- Prior art keywords
- electric block
- frequency control
- control electric
- stepless frequency
- winding drum
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- 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 - Fee Related
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Abstract
The utility mode relates to a stepless frequency control electric block, comprising a motor, a winding drum, a gripping beam lifting device, a reducer and an electrical control system, wherein the motor is connected to one end of the winding drum while the other end of the winding drum is connected to the reducer, an incremental encoder and an absolute encoder are connected to the reducer, the winding drum is provided with a rope guide and a fixed rope crossbeam device, and the gripping beam lifting device is arranged at the lower end of the winding drum. An overspeed switch is arranged on the incremental encoder. The stepless frequency control electric block has the advantages that: the speed control of the electric block can be achieved in the full frequency of 0-50Hz and above 50Hz, two speed control zones of constant torque and constant power can be met, accurate positioning can be achieved at low speeds, a certain production rate is ensured at high speeds, contradiction between accurate positioning and high production rate is properly solved, and thereby the stepless frequency control electric block is applicable to sites with complex working conditions.
Description
Technical field
The utility model relates to a kind of stepless frequency control electric block.
Background technology
The speed governing of the speed governing of electric block in 0 ~ 50Hz frequency limit is called permanent magnetic speed governing, and the speed governing that is greater than 50Hz scope in frequency is called weak-magnetic speed-regulating.The speed governing of prior art electric block is mainly in 0 ~ 50Hz frequency limit, and this speed governing within the scope of certain frequency makes the speed governing of electric block be subject to certain restriction, can not meet the demand of multi-state.
Utility model content
The purpose of this utility model is to provide a kind of stepless frequency control electric block, to overcome prior art above shortcomings.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of stepless frequency control electric block, comprises motor, and described motor connects one end of reel, the other end connection reducer of described reel, and described retarder is connected with incremental encoder and absolute type encoder; Described reel is provided with rope guide and static line beam device, and the lower end of described reel is provided with grasping beam hoisting device.
Further, in described incremental encoder, establish overspeed switch.
Further, the fixing hexagonal bar iron that all adopts of fixing and described motor and its shell of described retarder and its shell.
The beneficial effects of the utility model are: described electric block can be realized frequency 0 ~ 50Hz and full range speed governing more than 50Hz, meet two kinds of speed regulating section of permanent torque and permanent power, when low speed, can accurately locate, when high speed, ensure certain capacity rating, adequate solution accurately put in place and high productivity between contradiction, be adapted to the place of operating mode complexity.
Brief description of the drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structural representation of the stepless frequency control electric block described in the utility model embodiment;
Fig. 2 is the right elevation of the stepless frequency control electric block described in the utility model embodiment;
Fig. 3 is the main distribution circuit theory figure of the stepless frequency control electric block described in the utility model embodiment;
Fig. 4 is the lifting major loop schematic diagram of the stepless frequency control electric block described in the utility model embodiment;
Fig. 5 is the CPU module principle figure of the stepless frequency control electric block described in the utility model embodiment;
Fig. 6 is input, the output expansion module schematic diagram of the stepless frequency control electric block described in the utility model embodiment;
Fig. 7 is the control loop schematic diagram of the stepless frequency control electric block described in the utility model embodiment;
Fig. 8 is the annular communication network schematic diagram of the stepless frequency control electric block described in the utility model embodiment.
In figure:
1, motor; 2, reel; 3, retarder; 4, incremental encoder; 5, absolute type encoder; 6, rope guide; 7, static line beam device; 8, grasping beam hoisting device; 9, overspeed switch; 10, hexagonal bar iron.
Detailed description of the invention
As shown in Figure 1-2, a kind of stepless frequency control electric block described in the utility model embodiment, comprises motor 1, and described motor 1 connects one end of reel 2, the other end connection reducer 3 of described reel 2, described retarder 3 is connected with incremental encoder 4 and absolute type encoder 5; Described reel 2 is provided with rope guide 6 and static line beam device 7, and the lower end of described reel 2 is provided with grasping beam hoisting device 8.In described incremental encoder 4, establish overspeed switch 9.Described retarder 3 and the fixing and described motor 1 of its shell and the fixing hexagonal bar iron 10 that all adopts of its shell.
When concrete use, incremental encoder 4 and frequency converter are used in combination composition Closed-Loop Speed Governing System, ensure 0Hz suspension function, and 150% rated moment when 0Hz improves adjusting speed accuracy and accelerates response time; PLC, absolute type encoder 5, touch-screen lead to, lifting frequency converter is crossed an annular communication network of communications protocol composition, and weak magnetic, permanent magnetic speed governing demonstration in real time, electronic limit, lifting are provided, and monitoring, the frequency converter of operating unit action are monitored in real time; Overload limiting device 4 provides 50% rated weight signal output point and 100% rated weight output point to enter PLC, by circuit provides electric block load-carrying important information, then the output point information that Circuits System provides according to overload limiting device 4, export the logic input of corresponding signal location to frequency converter, frequency converter receives after the unlike signal that circuit provides, automatically the corresponding frequency of output, motor 1 receives after corresponding frequency, by different speed regulating section operations.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection domain of the present utility model.
Claims (3)
1. a stepless frequency control electric block, comprise motor (1), it is characterized in that: described motor (1) connects one end of reel (2), the other end connection reducer (3) of described reel (2), described retarder (3) is connected with incremental encoder (4) and absolute type encoder (5); Described reel (2) is provided with rope guide (6) and static line beam device (7), and the lower end of described reel (2) is provided with grasping beam hoisting device (8).
2. stepless frequency control electric block according to claim 1, is characterized in that: in described incremental encoder (4), establish overspeed switch (9).
3. stepless frequency control electric block according to claim 2, is characterized in that: described retarder (3) and the fixing and described motor (1) of its shell and the fixing hexagonal bar iron (10) that all adopts of its shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231702.6U CN203903883U (en) | 2014-05-07 | 2014-05-07 | Stepless frequency control electric block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231702.6U CN203903883U (en) | 2014-05-07 | 2014-05-07 | Stepless frequency control electric block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203903883U true CN203903883U (en) | 2014-10-29 |
Family
ID=51778171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420231702.6U Expired - Fee Related CN203903883U (en) | 2014-05-07 | 2014-05-07 | Stepless frequency control electric block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203903883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253679A (en) * | 2017-08-14 | 2017-10-17 | 浙江双鸟起重设备有限公司 | A kind of twin beams steel-wire rope type electric block with defencive function |
-
2014
- 2014-05-07 CN CN201420231702.6U patent/CN203903883U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253679A (en) * | 2017-08-14 | 2017-10-17 | 浙江双鸟起重设备有限公司 | A kind of twin beams steel-wire rope type electric block with defencive function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20160507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |