JPS61185299U

JPS61185299U -

Info

Publication number: JPS61185299U
Application number: JP1985067571U
Authority: JP
Priority date: 1985-05-07
Filing date: 1985-05-07
Publication date: 1986-11-19

Description

[Brief explanation of the drawing]

第１図は本考案に係る可変速電動ウインチにお
ける駆動回路の実施例を示した回路図、第２図は
同実施例における帰還形速度制御回路の一例を示
した回路図、第３図は従来の直巻整流子モータを
使用した電動ウインチを示した正面図、第４図は
従来の電動ウインチにおけるウインチ駆動回路図
である。３……直巻整流子モータ、１２……ウインチ駆
動回路、１３……直流電源、１７……整流スタツ
ク、１８……モータの回転数検出器、２０……帰
還形速度制御回路、２１……トライアツク、２２
……増幅回路、Ｆ……界磁コイル。 Fig. 1 is a circuit diagram showing an embodiment of a drive circuit in a variable speed electric winch according to the present invention, Fig. 2 is a circuit diagram showing an example of a feedback type speed control circuit in the same embodiment, and Fig. 3 is a conventional circuit diagram. FIG. 4 is a front view showing an electric winch using a series-wound commutator motor, and FIG. 4 is a winch drive circuit diagram of a conventional electric winch. 3... Series commutator motor, 12... Winch drive circuit, 13... DC power supply, 17... Rectifier stack, 18... Motor rotation speed detector, 20... Feedback type speed control circuit, 21... Triack, 22
...Amplification circuit, F...field coil.

補正昭６１．３．２０実用新案登録請求の範囲を次のように補正する
。Amendment March 20, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】直巻整流子モータの界磁コイルＦを、印加すべ
き直流電源の極性変化に拘らず界磁電流が常時同
一方向へ流れるよう整流スタツク１７内に組入れ
てなるウインチ駆動回路１２に、上記直巻整流子
モータには回転数検出器１８を接続し、かつ可変
抵抗器１９を介在してモータ速度に比例した重圧
と速度設定電圧を増幅回路２２で比較し、トライ
アツク２１へ入るトリガパルスのタイミングを調
整することによりモータ速度を制御するよう回路
構成した帰還形速度制御回路２０を介在してなる
ことを特徴とする可変速電動ウインチ。図面の簡単な説明を次のように補正する。明細書第８頁第５行目「３……直巻整流子モー
タ」とあるのを「３……電機子」と補正する。明細書第８頁第６行目「１３……直流電源」と
あるのを「１３……交流電源」と補正する。[Claims for Utility Model Registration] A winch in which a field coil F of a series commutator motor is incorporated into a rectifier stack 17 so that the field current always flows in the same direction regardless of changes in the polarity of the DC power to be applied. A rotation speed detector 18 is connected to the series-wound commutator motor in the drive circuit 12, and the amplifier circuit 22 compares the heavy pressure proportional to the motor speed with the speed setting voltage via the variable resistor 19, and performs a trial operation. 2. A variable speed electric winch comprising a feedback speed control circuit 20 which is configured to control the motor speed by adjusting the timing of a trigger pulse entering the winch. The brief description of the drawing has been amended as follows. On page 8, line 5 of the specification, "3...series commutator motor" is corrected to "3...armature". On page 8, line 6 of the specification, "13...DC power source" is corrected to "13...AC power source."

Claims

[Scope of utility model registration request]

The above-mentioned winch drive circuit 12 includes the field coil F of the series commutator motor 3 incorporated in the rectifier stack 17 so that the field current always flows in the same direction regardless of the polarity change of the DC power supply 13 to be applied. A rotation speed detector 18 is connected to the series commutator motor, and a voltage proportional to the motor speed is compared with a speed setting voltage by an amplifier circuit 22 via a variable resistor 19.
A variable speed electric winch comprising a feedback speed control circuit 20 which is configured to control the motor speed by adjusting the timing of a trigger pulse input to a triax 21.