CN203319596U - Electric hoist capable of realizing stepless speed regulation - Google Patents
Electric hoist capable of realizing stepless speed regulation Download PDFInfo
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- CN203319596U CN203319596U CN2013203923989U CN201320392398U CN203319596U CN 203319596 U CN203319596 U CN 203319596U CN 2013203923989 U CN2013203923989 U CN 2013203923989U CN 201320392398 U CN201320392398 U CN 201320392398U CN 203319596 U CN203319596 U CN 203319596U
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- stepless speed
- electric block
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Abstract
The utility model discloses an electric hoist capable of realizing stepless speed regulation, which comprises a host. A hoisting specialized frequency converter is mounted on an electric control cabinet at one side of the host, and the other side of the host is provided with a liftable motor. The hoisting specialized frequency converter internally comprises a main loop and a control loop. The main loop comprises a rectifying circuit, a capacitance circuit and an inverting circuit. The control loop is internally provided with a switch set. The switch set is internally provided with the following components successively: a reset switch, a lifting switch, a dropping switch and an emergency stop switch. The control loop is connected with a press button switch assembly through a switch set. Through adopting variable frequency control technique, electric power which is processed by a hoisting specialized frequency converter is output to the main circuit of the electric hoist in a form of three-phase electricity, so that the electric chain hoist can perform buffer lifting and dropping, thereby realizing a stepless speed regulation function of the electric hoist. A brake resistor which is particularly configured for the frequency converter is placed in a control box of the electric hoist. The electric hoist according to the utility model is a good novel plan and has wide market popularization prospect.
Description
Technical field
The utility model relates to small-sized weight-lifting equipment field, particularly relates to a kind of employing converter technique, can realize the electric block of function of stepless speed regulation.
Background technology
As small-sized weight-lifting equipment, electric block is divided into steel-wire rope type electric block and Electric Chain Blocks, wherein Electric Chain Blocks is attractive in appearance with fuselage appearance, volume is little, the lifting downslide amount is little, the characteristics such as control is accurate, degree of protection is high, noise is little, safe and reliable that descend that hoist, and the industries such as transportation, chemical industry, shipbuilding, Mould Machining, metal surface treatment are widely used in storing in a warehouse.In China's all trades and professions, Electric Chain Blocks is used field more and more extensive.
At present, the various types of Electric Chain Blocks products that provide above market are all single speed or two-speed type, electric block starts and stops agile quick in use procedure, for needs slowly hoist and the occasion of the weight that descends inapplicable, easily cause the damage of lifted weight or pour down or forth, simultaneously very strong to the impact of electric block body, reduced the service life of electric block, although the case of using frequency converter on electric block is also arranged, but the frequency converter used due to existing market is subject to the impact of power of motor larger, can't with the supporting installation of electric block, and be subject to the restriction of electric block dynamic braking device starting frequency, the method of there is no realizes the function of stepless speed regulation of electric block.Common frequency converter product is not suitable for doing and reuses, and practicality is not good, so exist deficiency.
In sum, for the defect of prior art, need especially a kind of electric block of realizing function of stepless speed regulation, to solve the deficiencies in the prior art, the diversified requirement of meeting the need of market.
The utility model content
There is the limitation of single speed operation in using for electric block in prior art, and in actual use procedure, due to single speed, the load material is being hoisted or the process that descends in the damage that causes or pour down or forth, the utility model proposes a kind of electric block of realizing function of stepless speed regulation, by frequency conversion control technique is used in to threephase asynchronous machine, thereby the available buffer of realizing Electric Chain Blocks hoists and descends, to address the deficiencies of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of electric block of realizing function of stepless speed regulation, comprise main frame, above the electric cabinet of main frame one side, the lifting special converter is installed, the opposite side of main frame is equipped with lifting motor, lifting special converter inside includes major loop and control loop, major loop comprises rectifying circuit, condenser network, inverter circuit, control loop the inside is provided with switches set, switches set inside is disposed with reset switch, rising switch, decline switch, emergency stop switch, and control loop connects the button switch assembly by switches set.
Interface at the utility model major loop comprises the three phase mains interface, the decline motor interface that hoists, external braking resistor interface, external restraining coil interface, and external restraining coil interface connects braking resistor.
Further, a side of described lifting special converter is equipped with limit switch, and lifting motor adopts three phase asynchronous motor.
Further, the connection mode adopted between described reset switch, rising switch, decline switch, emergency stop switch is in parallel.
An end at button switch assembly described in the utility model is provided with the frequency digital display screen, the other end of button switch assembly is provided with scram button, the below of digital display screen is provided with the frequency adjustment knob, and the below of scram button is disposed with rising button, decline button.
Further, described host configuration has the chain bag, and the chain bag is for carrying load chain, the below of load chain is provided with limit spring, the upper end of load chain is equipped with hook, and the lower end of load chain is equipped with lower suspension hook, hook and the lower safety tongue that is provided with above suspension hook.
The beneficial effects of the utility model are: this product structure is simple, easy to make, by adopting frequency conversion control technique, the power supply that to process through the lifting special converter is the power circuit to electric block with the formal output of three-phase electricity, make Electric Chain Blocks can carry out buffer lift and decline, realized the function of stepless speed regulation of electric block, to be built in for the braking resistor of frequency converter special configuration in the electric block control box, by electric block shell distribute heat, and voltage remains unchanged in this process, can be used in easily the Electric Chain Blocks product of various models, also can be used on the weight-lifting equipment of other similar functions, Practical Performance is excellent, use flexibly, novel in design, it is a kind of good innovation scheme, the marketing prospect is arranged very much.
The accompanying drawing explanation
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model frequency converter inner structure schematic diagram.
100-hook in figure, 110-lifting motor, 120-chain bag, 130-load chain, suspension hook under 140-, 150-limit spring, 160-button switch assembly, 161-frequency digital display screen, 162-frequency adjustment knob, 163-rising button, 164-decline button, 165-scram button, the 170-limit switch, 180-braking resistor, 190-lifting special converter, 300-safety tongue, the 400-main frame, 221-reset switch, 222-rising switch, 223-decline switch, 224-emergency stop switch, 220-switches set.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, Fig. 2, a kind of electric block of realizing function of stepless speed regulation, comprise main frame 400, above the electric cabinet of main frame 400 1 sides, lifting special converter 190 is installed, the opposite side of main frame 400 is equipped with lifting motor 110, lifting special converter 190 inside include major loop and control loop, major loop comprises rectifying circuit, condenser network, inverter circuit, control loop the inside is provided with switches set 220, switches set 220 inside are disposed with reset switch 221, rising switch 222, decline switch 223, emergency stop switch 224, control loop connects button switch assembly 160 by switches set 220.In addition, the interface of major loop comprises the three phase mains interface, the decline motor interface that hoists, external braking resistor interface, external restraining coil interface, and external restraining coil interface connects braking resistor 180.Braking resistor 180 can be selected flexibly according to the electric block power of motor, one side of lifting special converter 190 is equipped with limit switch 170, lifting motor 110 adopts three phase asynchronous motor, and the connection mode adopted between reset switch 221, rising switch 222, decline switch 223, emergency stop switch 224 is in parallel.
This lifting special converter has following defencive function:
1, overcurrent protection: outgoing current is greater than motor rated current safety multiple and lasting some cycles, starting protection function.
2, output short circuit protection: when the outgoing current instantaneous peak value is greater than specified value, the starting protection function.
3, under-voltage protection: input voltage is less than 15% of specified input voltage, the starting protection function.
4, overheating protection: transducer power inside modules temperature is greater than 110 degree, the starting protection function.
5, momentary power failure protection.
In addition, one end of button switch assembly 160 is provided with digital display screen 161, real-time change for display frequency, the other end of button switch assembly 160 is provided with scram button 165, the below of digital display screen 161 is provided with frequency adjustment knob 162, can do the frequency adjustment according to the operating mode of lifting loads, the below of scram button 165 is disposed with rising button 163, decline button 164.Main frame 400 disposes chain band 120, chain band 120 inside are equipped with load chain 130, the below of load chain 130 is provided with limit spring 150, the upper end of load chain 130 is equipped with hook 100, the lower end of load chain 130 is equipped with lower suspension hook 140, hook 100 and be provided with safety tongue above lower suspension hook 140.
Principle of work of the present utility model is: three phase mains enters R end, S end, the T end of the lifting special converter 190 of installing in the electric block control box by electric power incoming line, after frequency converter powers on, enter process of self-test, inspection item comprises power supply, brake unit, IGBT, CPU etc.After self check completes, sample circuit is carried out to self-correcting, enter afterwards readiness for action, wait for the order of button switch assembly 160.The power supply of processing through lifting special converter 190 is U end, V end, the W end to Motor Driven Elevating Calabash motor 110 with the formal output of three-phase electricity, control hoisting and descending of electric block by electric block frequency adjustment knob 162 and rising button 163, decline button 164 according to the operating mode interlock of lifted weight, in this process, voltage remains unchanged, the braking resistor 180 of the special adapted of its frequency converter is built in the electric block control box, by electric block shell distribute heat.
The lifting special converter is vector controlled, is widely used on various weight-lifting equipments, and principal feature and performance figure are:
1, speed-regulating range width, can realize the operation of accurate control positioning requirements, and the speed governing open loop is than being 1:100, and closed loop can reach 1:1000.
2, detent torque is large, the large detent torque demand for weight-lifting equipment, and frequency converter can reach 150% rated current 60s; 180% rated current 10s, easily meet the working condition requirement that hoists, and with the drg no-float, braking glide quantity is controlled in the scope of national Specification.
Based on above-mentioned, the beneficial effects of the utility model are: simple in structure, easy to make, by adopting frequency conversion control technique, the power supply that to process through the lifting special converter is the power circuit to electric block with the formal output of three-phase electricity, make Electric Chain Blocks can carry out buffer lift and decline, realized the function of stepless speed regulation of electric block, to be built in for the braking resistor of frequency converter special configuration in the electric block control box, by electric block shell distribute heat, and voltage remains unchanged in this process, can be used in easily the Electric Chain Blocks product of various models, also can be used on the weight-lifting equipment of other similar functions, Practical Performance is excellent, use flexibly, novel in design, it is a kind of good innovation scheme, the marketing prospect is arranged very much.
The technical personnel of the industry should be understood; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. the electric block that can realize function of stepless speed regulation, comprise main frame, it is characterized in that: above the electric cabinet of main frame one side, the lifting special converter is installed, the opposite side of main frame is equipped with lifting motor, lifting special converter inside includes major loop and control loop, major loop comprises rectifying circuit, condenser network, inverter circuit, control loop the inside is provided with switches set, switches set inside is disposed with reset switch, rising switch, decline switch, emergency stop switch, and control loop connects the button switch assembly by switches set.
2. a kind of electric block of realizing function of stepless speed regulation according to claim 1, it is characterized in that: the interface of described major loop comprises the three phase mains interface, the decline motor interface that hoists, external braking resistor interface, external restraining coil interface, and external restraining coil interface connects braking resistor.
3. a kind of electric block of realizing function of stepless speed regulation according to claim 1, it is characterized in that: a side of described lifting special converter is equipped with limit switch, and lifting motor adopts three phase asynchronous motor.
4. a kind of electric block of realizing function of stepless speed regulation according to claim 1, it is characterized in that: the connection mode adopted between described reset switch, rising switch, decline switch, emergency stop switch is in parallel.
5. a kind of electric block of realizing function of stepless speed regulation according to claim 1, it is characterized in that: an end of described button switch assembly is provided with digital display screen, the below of digital display screen is provided with the frequency adjustment knob, and the below of scram button is disposed with rising button, decline button.
6. a kind of electric block of realizing function of stepless speed regulation according to claim 1, it is characterized in that: described host configuration has the chain bag, the chain bag is for carrying load chain, the below of load chain is provided with limit spring, the upper end of load chain is equipped with hook, the lower end of load chain is equipped with lower suspension hook, hook and the lower safety tongue that is provided with above suspension hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203923989U CN203319596U (en) | 2013-07-02 | 2013-07-02 | Electric hoist capable of realizing stepless speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203923989U CN203319596U (en) | 2013-07-02 | 2013-07-02 | Electric hoist capable of realizing stepless speed regulation |
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| Publication Number | Publication Date |
|---|---|
| CN203319596U true CN203319596U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203923989U Expired - Fee Related CN203319596U (en) | 2013-07-02 | 2013-07-02 | Electric hoist capable of realizing stepless speed regulation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104210978A (en) * | 2014-08-25 | 2014-12-17 | 苏州中州安勃起重有限公司 | Electric chain hoist capable of being locked-up |
| CN105060153A (en) * | 2015-08-15 | 2015-11-18 | 河南正大起重设备有限公司 | Novel energy-saving electric hoist |
| CN105293326A (en) * | 2015-10-22 | 2016-02-03 | 无锡市恒达矿山机械有限公司 | Mine electric hoist |
| CN107298382A (en) * | 2016-04-15 | 2017-10-27 | 株式会社日立产机系统 | Operate input unit |
| CN109160436A (en) * | 2018-10-12 | 2019-01-08 | 上海汇焰智能科技有限公司 | Intellectualized electric cucurbit and Electric hoist system |
| CN109927082A (en) * | 2019-03-25 | 2019-06-25 | 浙江鲨鱼食品机械有限公司 | A kind of full-automatic melon and fruit cutting machine |
| CN111943022A (en) * | 2020-08-19 | 2020-11-17 | 山东鼎鲁建筑有限公司 | Bridge overhauls is with equipment that goes up and down certainly |
-
2013
- 2013-07-02 CN CN2013203923989U patent/CN203319596U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104210978A (en) * | 2014-08-25 | 2014-12-17 | 苏州中州安勃起重有限公司 | Electric chain hoist capable of being locked-up |
| CN105060153A (en) * | 2015-08-15 | 2015-11-18 | 河南正大起重设备有限公司 | Novel energy-saving electric hoist |
| CN105293326A (en) * | 2015-10-22 | 2016-02-03 | 无锡市恒达矿山机械有限公司 | Mine electric hoist |
| CN107298382A (en) * | 2016-04-15 | 2017-10-27 | 株式会社日立产机系统 | Operate input unit |
| CN109160436A (en) * | 2018-10-12 | 2019-01-08 | 上海汇焰智能科技有限公司 | Intellectualized electric cucurbit and Electric hoist system |
| CN109927082A (en) * | 2019-03-25 | 2019-06-25 | 浙江鲨鱼食品机械有限公司 | A kind of full-automatic melon and fruit cutting machine |
| CN111943022A (en) * | 2020-08-19 | 2020-11-17 | 山东鼎鲁建筑有限公司 | Bridge overhauls is with equipment that goes up and down certainly |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20170702 |