JPS5982295A - Electric hoist - Google Patents
Electric hoistInfo
- Publication number
- JPS5982295A JPS5982295A JP19242382A JP19242382A JPS5982295A JP S5982295 A JPS5982295 A JP S5982295A JP 19242382 A JP19242382 A JP 19242382A JP 19242382 A JP19242382 A JP 19242382A JP S5982295 A JPS5982295 A JP S5982295A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic brake
- hoist
- braking
- electromagnetic
- motor
- 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.)
- Pending
Links
Landscapes
- Non-Insulated Conductors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はホイストの電磁ブレーキに係り、特に、制動時
の衝撃力を小さくした低衝撃制動ホイストに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic brake for a hoist, and more particularly to a low-impact brake hoist that reduces impact force during braking.
本発明の目的は、ブレーキ制動時の衝撃力を小さくした
、低衝撃制動ボイス）ｋ提供することにある。An object of the present invention is to provide a low-impact braking voice that reduces the impact force during braking.
制動力を得る電磁ブレーキを複数個とし、複数個の電磁
ブレーキの動作時間をずらすため、電動機と操作回路を
分離した即応性のブレーキと、電動機と操作回路を並列
に接続し、電動機の逆起電力によるブレーキ動作を遅ら
せたブレーキに分け、動作時間をずらして制動力を順次
太きくし、制動時の衝撃力を低下させる。In order to use multiple electromagnetic brakes to obtain braking force and to stagger the operation time of the multiple electromagnetic brakes, we have installed a quick-response brake that separates the motor and operating circuit, and connected the motor and operating circuit in parallel to reduce the counter electromotive force of the motor. The electric braking operation is divided into delayed brakes, and the braking force is gradually increased by staggering the operation time to reduce the impact force during braking.
２個の巻上１Ｌ動機３，４には荷物全宙吊りした場合に
荷物の落下を防止するだめの電磁ブレーキ１．２が付け
られており、巻」二電動機３．４が停止している場合に
、電磁ブレーキ１．２の制動力が発生し荷物の落下を防
止している。又巻上電動機３，４に通電されると同時に
電磁ブレーキｌ。The two 1L hoisting motors 3 and 4 are equipped with electromagnetic brakes 1.2 to prevent the cargo from falling when the cargo is completely suspended, and when the hoisting motor 3.4 is stopped. Then, the braking force of the electromagnetic brake 1.2 is generated to prevent the cargo from falling. Also, at the same time as the hoisting motors 3 and 4 are energized, the electromagnetic brake l is activated.
２にも通「にされ、電磁ブレーキ１．２は開放される。2 is also turned on, and electromagnetic brake 1.2 is released.
１に磁ブし・−キ１，２の制動力（・」、クレーンの規
格から定格荷重の１．５倍以上の荷物を停止しなけれは
ならず、又安全性の面からも通猟２〜３伯の制動力とし
ている。電磁ブレーキ１．２の動作時間に＋１、巻上電
動機３．４と同期しなければ、荷物の落下となるが、電
磁ブレーキ１．２がまったく同時に動作すると、大きな
制動力が瞬時に働き、荷物は停止するが、停止時に大き
な衝撃力が発生し、荷物の揺れ、クレーン全体の揺れが
発生する。The braking force of keys 1 and 2 (・) is required to stop a load of 1.5 times or more of the rated load according to the crane standards, and from the standpoint of safety, the braking force of keys 1 and 2 is required. The braking force is set to ~3. If the operating time of the electromagnetic brake 1.2 is +1, and it is not synchronized with the hoisting motor 3.4, the load will fall, but if the electromagnetic brake 1.2 operates at exactly the same time, A large braking force is applied instantly and the load stops, but when it stops, a large impact force is generated, causing the load to shake and the entire crane to shake.
このため、安全性の面から制動力は弱く出来ず、制動時
の衝撃力に而ｔｔられ７６クレ一ン全体、又ｔよ建屋全
体の補強が必要であった。そこで、２個の電磁ブレーキ
１，２？同時に動作きせると大きな衝撃力とするｋ〕め
、電磁ブレーキ１．２の動作時間を１４らし、動作時の
衝撃力を緩オロさせることを特徴としでいる。電磁ブレ
ーキ１．２は・へ■市、動４；ｉ３．４と市：源を分１
１ｉｊ（すれば、小；源全遮１θじ）ると同時に動作す
るが、電源を並列に接続すると屯倣を遮断した後にも、
巻上電動機の逆起電力が電磁ブレーキに通′眠され、電
磁ブレーキの動作が多少（０，２〜０．５秒程度）遅れ
る。この電磁ブレーキの動作遅れｒ利用し、１個の′Ｆ
ｉｆ磁プレーギ１は巻」二′１−ＩＬ動機３と電源全労
離し、電源を遮断すると同時に瞬時に動作させ、もう１
個の電磁ブレーキ２は巻上）ＩＬｔｂ機４と電源を並列
に接続し、電ｄｉｄを遮断してから少し動作時間を遅ら
せ、電磁ブレーキ１．２の制動時の＠撃力を緩和させる
ことｆ：特徴とするホイスト。For this reason, the braking force could not be weakened for safety reasons, and the entire 76 crane and the entire building had to be reinforced due to the impact force during braking. So, two electromagnetic brakes 1 and 2? In order to generate a large impact force if operated simultaneously, the operating time of the electromagnetic brake 1.2 is set to 14, and the impact force at the time of operation is gradually reduced. Electromagnetic brake 1.2 is to ■ city, movement 4; i3.4 and city: source 1
1ij (then small; total source shutoff 1θji), but if the power supplies are connected in parallel, even after shutting off the transmission,
The counter electromotive force of the hoisting motor is passed through the electromagnetic brake, and the operation of the electromagnetic brake is delayed somewhat (about 0.2 to 0.5 seconds). By utilizing the operation delay r of this electromagnetic brake, one 'F
If the magnetic plagiarge 1 is completely disconnected from the power source 2'1-IL motor 3, the power is cut off and at the same time the power is turned off, and the other one is turned on.
The electromagnetic brake 2 (winding) is connected to the ILtb machine 4 and the power supply in parallel, and after cutting off the electric power, the operation time is delayed a little to reduce the impact force when braking the electromagnetic brake 1.2. : Features a hoist.
電磁ブレーキの制動時の衝撃力が緩和され、荷物の揺れ
、クレーン全体の揺れが少くなり、ホイストの操作１生
が良くなる。The impact force when braking the electromagnetic brake is reduced, the shaking of the load and the shaking of the entire crane is reduced, and the operation of the hoist is improved.
衝撃力の緩和により、クレーン、建屋全体を°補強する
必要がなく、又安全性の面からも効果は太きい。By mitigating the impact force, there is no need to reinforce the entire crane or building, and the effect is significant from a safety perspective.
電磁ブレーキの動作時間を遅らせる方法は電磁ブレーキ
の接続方法を変更するのみで１０１ら部品を追加、変更
する必要がなく安価な方法である。The method of delaying the operation time of the electromagnetic brake is an inexpensive method that requires only changing the connection method of the electromagnetic brake and does not require adding or changing parts such as 101.
第１図は本発明によるホイスト外親図、第２図は本発明
によるホイストの部分縦断面図、第３図は従来方式によ
るホイスト接ね―図、第４図は本発明によるホイスト接
続図。
１・・・電磁ブレーキ（Ｉ）、２・・・電磁ブレーキ（
ｎ）、３・・・巻上電動機（Ｉ）、４・・・巻上電動機
（ｎ）、５・・・動力伝達歯車、６・・・動力伝達軸。
’￥ ノ １；２：）
第２図FIG. 1 is an external view of a hoist according to the present invention, FIG. 2 is a partial longitudinal cross-sectional view of a hoist according to the present invention, FIG. 3 is a connection diagram of a hoist according to a conventional method, and FIG. 4 is a connection diagram of a hoist according to the present invention. 1... Electromagnetic brake (I), 2... Electromagnetic brake (
n), 3... Hoisting motor (I), 4... Hoisting motor (n), 5... Power transmission gear, 6... Power transmission shaft. '￥ノ １；２：） Figure 2
Claims (1)
各々の電磁ブレーキが制動する動作時間をずらしたこと
ｔ％徴とするホイスト。 ２、 前記ホイストの電磁ブレーキ制御回路ヲ市動機と
分離した物と、電動機と並列に接続した物として、電磁
ブレーキの動作時間ケずらしたホイスト。[Claims] 1. Directing a hoist having a plurality of electromagnetic brakes,
A hoist in which the braking operation time of each electromagnetic brake is shifted by t%. 2. A hoist in which the electromagnetic brake control circuit of the hoist is separated from the motor and connected in parallel with the electric motor, and the operating time of the electromagnetic brake is staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19242382A JPS5982295A (en) | 1982-11-04 | 1982-11-04 | Electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19242382A JPS5982295A (en) | 1982-11-04 | 1982-11-04 | Electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5982295A true JPS5982295A (en) | 1984-05-12 |
Family
ID=16291068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19242382A Pending JPS5982295A (en) | 1982-11-04 | 1982-11-04 | Electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5982295A (en) |
-
1982
- 1982-11-04 JP JP19242382A patent/JPS5982295A/en active Pending
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