JP4455891B2 - Brake machine of hoisting machine - Google Patents

Brake machine of hoisting machine Download PDF

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JP4455891B2
JP4455891B2 JP2004003540A JP2004003540A JP4455891B2 JP 4455891 B2 JP4455891 B2 JP 4455891B2 JP 2004003540 A JP2004003540 A JP 2004003540A JP 2004003540 A JP2004003540 A JP 2004003540A JP 4455891 B2 JP4455891 B2 JP 4455891B2
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brake
iron core
bobbin
lever
coil
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JP2005194076A (en
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尚功 魚住
直樹 梶田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake device for a winch capable of precisely monitoring the on-off operating condition of electromagnetic brakes. <P>SOLUTION: The brake device comprises a pair of electromagnetic brakes of internal expansion type installed on the inside surface of a brake drum in 180-degree opposing positions and is structured so that a stationary iron core 6 fitted internally with a coil is installed in a single piece construction, a mechanical switch 7 is installed inside the stationary core 6, and that a lever 8 to enlarge the signal of the mechanical switch is installed on the center axis where the electromagnetic brakes 1 operate. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

この発明は、巻上機に適用するブレーキ装置に関するものである。   The present invention relates to a brake device applied to a hoisting machine.

従来の巻上機では、左右一対の電磁ブレーキがブレーキドラムの内周面と１８０度対向して配置されており、電磁ブレーキはブレーキドラムに内蔵された内部拡張型ブレーキ装置であって、電磁石の固定鉄心と可動鉄心からなり、可動鉄心の先端にはブレーキシューが取付けられている。固定鉄心に内蔵したコイルに通電して可動鉄心を軸方向に動かしてブレーキシューをブレーキドラムに押付けることによって巻上機を制動するものである。電磁ブレーキが固定されるハウジングにはリブがその半径方向に設けられ、電磁ブレーキはリブの近傍にねじで固定される構造になっており、また、電磁ブレーキのＯＮ、ＯＦＦ状態をモニタリングするために、メカニカルスイッチが固定鉄心に取付けられている。可動鉄心の移動量は小さいため、メカニカルスイッチの変位量を拡大するために、可動鉄心の端部とメカニカルスイッチの間にレバーが取付けられている（例えば、特許文献１参照）。   In a conventional hoisting machine, a pair of left and right electromagnetic brakes are arranged to face the inner peripheral surface of the brake drum 180 degrees, and the electromagnetic brake is an internal expansion type brake device built in the brake drum, It consists of a fixed iron core and a movable iron core, and a brake shoe is attached to the tip of the movable iron core. The winding machine is braked by energizing a coil built in the fixed iron core, moving the movable iron core in the axial direction, and pressing the brake shoe against the brake drum. The housing to which the electromagnetic brake is fixed is provided with ribs in the radial direction, and the electromagnetic brake is fixed by screws in the vicinity of the rib, and also for monitoring the ON / OFF state of the electromagnetic brake The mechanical switch is attached to the fixed iron core. Since the moving amount of the movable iron core is small, a lever is attached between the end of the movable iron core and the mechanical switch in order to increase the displacement amount of the mechanical switch (see, for example, Patent Document 1).

特開２００２−３０３３４１号公報JP 2002-303341 A

従来の巻上機のブレーキ装置においては、メカニカルスイッチは固定鉄心の端部に配置された構造であり、メカニカルスイッチの移動する軸に対して、オフセットを有するため、可動鉄心移動方向に対して傾斜して動いた場合には、モニタリングする箇所の変位が小さくなって、ブレーキがＯＮ状態であるにもかかわらず、メカニカルスイッチの信号としてはＯＦＦのままであるという不具合が発生するという問題点があった。又、可動鉄心の移動方向に対して完全に平行に移動することはあり得ないので、レバーの移動の設定に時間を要し、組立て、調整コストが高くつくという問題点もあった。   In the conventional hoisting machine brake device, the mechanical switch is arranged at the end of the fixed iron core and has an offset with respect to the axis of movement of the mechanical switch, so it is inclined with respect to the moving iron core moving direction. In this case, there is a problem that the displacement of the part to be monitored becomes small and the signal of the mechanical switch remains OFF even though the brake is ON. It was. Further, since it is impossible to move completely in parallel with the moving direction of the movable iron core, it takes time to set the movement of the lever, and there is a problem that the assembling and adjustment costs are high.

この発明は上記のような課題を解決するためになされたものであり、可動鉄心が移動方向に対して傾いて動くなど、その動作に誤差があっても検出する変位量は電磁ブレーキの両端部の変位量の平均値で検出して、電磁ブレーキのＯＮ，ＯＦＦの動作状態を正確にモニタできる巻上機のブレーキ装置を提供することを目的とする。   The present invention has been made to solve the above-described problems. The displacement detected even if there is an error in the operation of the movable iron core, for example, tilted with respect to the moving direction, is detected at both ends of the electromagnetic brake. It is an object of the present invention to provide a brake device for a hoisting machine capable of accurately monitoring the ON / OFF operation state of an electromagnetic brake.

この発明に係る巻上機のブレーキ装置は、電磁ブレーキの動作状態をモニタするスイッチなどを電磁ブレーキが動作する中心軸上に配置するとともに、電磁ブレーキに内蔵されるコイルのボビンに、スイッチレバーを挿入する窪み部を設けたものである。 In the hoisting machine brake device according to the present invention, a switch or the like for monitoring the operating state of the electromagnetic brake is disposed on the central axis on which the electromagnetic brake operates , and a switch lever is provided on the bobbin of the coil built in the electromagnetic brake. The hollow part to insert is provided.

この発明に係る巻上機のブレーキ装置によれば、電磁ブレーキの動作状態をモニタするスイッチなどを電磁ブレーキが動作する中心軸上に配置するとともに、電磁ブレーキに内蔵されるコイルのボビンに、スイッチレバーを挿入する窪み部を設けたので、可動鉄心が移動方向に対して傾いて動いても、検出する変位量は電磁ブレーキの両端部の変位量の平均値を検出することができるとともに、窪み部の箇所にスイッチレバーを挿入する構造とすることによって、スイッチレバーが巻上機のハウジングからはみ出すことがなく、巻上機全体を薄くすることができる。 According to the hoisting machine brake device of the present invention, the switch for monitoring the operation state of the electromagnetic brake is disposed on the central axis on which the electromagnetic brake operates, and the switch is mounted on the bobbin of the coil built in the electromagnetic brake. Since the recess for inserting the lever is provided , the displacement detected can detect the average value of the displacement at both ends of the electromagnetic brake , and the recess can be detected even if the movable iron core is inclined with respect to the moving direction. By adopting a structure in which the switch lever is inserted into the part, the switch lever does not protrude from the housing of the hoisting machine, and the entire hoisting machine can be made thin.

実施の形態１．
以下、この発明の一実施形態を図に基づいて説明する。
図１はこの発明の実施の形態１による巻上機のブレーキ装置を示す正面図であり、図において１は電磁ブレーキ、２はハウジング、３はブレーキドラム、４は可動鉄心、５はブレーキシュー、６は一体型鉄心、７はメカニカルスイッチ、８はレバー、９は一体型固定鉄心６に設けられた凹穴部である。 Embodiment 1 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is a front view showing a brake device for a hoist according to Embodiment 1 of the present invention, in which 1 is an electromagnetic brake, 2 is a housing, 3 is a brake drum, 4 is a movable iron core, 5 is a brake shoe, 6 is an integrated iron core, 7 is a mechanical switch, 8 is a lever, and 9 is a recessed hole provided in the integrated fixed iron core 6.

つまり、図１は電磁ブレーキ１として内部拡張型のブレーキを内蔵した、例えばエレベータ用巻上機の構成を示しており、ブレーキとしては、左右の電磁ブレーキの固定鉄心が左右一体となった一体型固定鉄心６として構成され、この一体型固定鉄心６をハウジング２に挿入する。メカニカルスイッチ７は、上記一体型固定鉄心６に設けた凹穴部９内に取付ける。このメカニカルスイッチ７は左右２個を取付けるが、それぞれに対応して取付けたレバー８の可動鉄心４との接触位置は、図に示す中心軸Ａ上、つまり可動鉄心４が移動する中心軸上となるように設定されている。   That is, FIG. 1 shows a configuration of an elevator hoisting machine that incorporates an internal extension type brake as the electromagnetic brake 1, and the brake is an integrated type in which the fixed iron cores of the left and right electromagnetic brakes are integrated in the left and right. It is configured as a fixed iron core 6, and this integrated fixed iron core 6 is inserted into the housing 2. The mechanical switch 7 is mounted in a recessed hole 9 provided in the integrated fixed iron core 6. Two mechanical switches 7 are mounted on the left and right, and the contact positions of the levers 8 attached corresponding to the mechanical switches 7 are on the central axis A shown in the drawing, that is, on the central axis on which the movable core 4 moves. It is set to be.

次に動作について説明する。
ブレーキ力が作用する制動動作は、可動鉄心４の動作がブレーキシュー５を外径方向に押圧し、ブレーキシュー５の前面に設けた摩擦材をブレーキドラム３の内周面に圧接する。又、可動鉄心４を吸着し、ブレーキシュー５を径方向内側へ引寄せることによってブレーキ力を解放する。 Next, the operation will be described.
In the braking operation in which the braking force acts, the operation of the movable iron core 4 presses the brake shoe 5 in the outer diameter direction, and the friction material provided on the front surface of the brake shoe 5 is pressed against the inner peripheral surface of the brake drum 3. Also, the brake force is released by attracting the movable iron core 4 and pulling the brake shoe 5 radially inward.

又、図２は可動鉄心４が移動方向に対して傾斜して動く場合、図中の矢印の位置で一体型固定鉄心６とのすき間が不均一になっても、検出する変位は中心軸Ａ上であるので、矢印の位置のすき間の平均値として検出できる。   2 shows that when the movable iron core 4 moves while being inclined with respect to the moving direction, even if the gap between the movable iron core 4 and the integrated fixed iron core 6 is not uniform at the position of the arrow in the figure, the detected displacement is the central axis A. Since it is above, it can be detected as an average value of the gap at the position of the arrow.

したがって、可動鉄心４の動作によらず、安定してブレーキの動作状態をモニタリングすることができ、信頼性の高い巻上機を得ることができる。また従来のものではスイッチを操作するレバーの位置の変位調整に時間を要していたが、検出位置を中心軸Ａ上に設定することによって調整が簡便になり、製造コストを低減することができる。   Therefore, the operation state of the brake can be stably monitored regardless of the operation of the movable iron core 4, and a highly reliable hoisting machine can be obtained. Further, in the conventional device, it took time to adjust the displacement of the position of the lever for operating the switch. However, by setting the detection position on the central axis A, the adjustment becomes simple and the manufacturing cost can be reduced. .

実施の形態２．
図３、図４はこの発明の実施の形態２による巻上機のブレーキ装置における部分構成を示したもので、図３（ａ）は凹型ボビンとレバーとの関係を示す側面図、同図（ｂ）は正面図であり、図４は凹型ボビンを一体型固定鉄心に密着した状態を示す部分正面図である。
本実施形態において、１０は凹型ボビン、１１は凹型ボビン１０の一側に設けた窪み部である。 Embodiment 2. FIG.
3 and 4 show a partial configuration of the brake device for a hoist according to Embodiment 2 of the present invention. FIG. 3A is a side view showing the relationship between the concave bobbin and the lever. b) is a front view, and FIG. 4 is a partial front view showing a state in which the concave bobbin is in close contact with the integral fixed iron core.
In the present embodiment, 10 is a concave bobbin, and 11 is a recess provided on one side of the concave bobbin 10.

レバー８がハウジングの表面から突出すると、巻上機全体で見ると厚さがそれだけ増えることになる。そこで図３（ａ）（ｂ）に示すように、固定鉄心６に内蔵するコイルのボビンとして、レバー８を収納し得るように部分的に窪み部１１を形成した凹型ボビン１０とし、その窪み部１１の箇所にレバー８を挿入する構造とすることによって、レバー８が巻上機のハウジングからはみ出すことがなく、巻上機全体を薄くすることができる。   If the lever 8 protrudes from the surface of the housing, the thickness increases correspondingly when viewed from the whole hoist. Therefore, as shown in FIGS. 3 (a) and 3 (b), as the bobbin of the coil built in the fixed iron core 6, a concave bobbin 10 in which a recess 11 is partially formed so that the lever 8 can be accommodated is formed. By adopting a structure in which the lever 8 is inserted into the portion 11, the lever 8 does not protrude from the housing of the hoisting machine, and the entire hoisting machine can be made thin.

上記実施の形態に示す凹型ボビン１０は、その片側にのみ窪み部１１が形成されたものであるが、ボビン１０の製造、ブレーキの組立ての簡便性などの理由によって、図５に示す如く、窪み部１１を両側に設けた方がコストを低減できる場合があるが、この様に構成しても効果は同様である。   The recessed bobbin 10 shown in the above embodiment has a recessed portion 11 formed only on one side thereof. However, as shown in FIG. 5, the recessed bobbin 10 has a recessed portion as shown in FIG. The cost may be reduced if the portions 11 are provided on both sides, but the effect is the same even if configured in this way.

実施の形態３．
図６はこの発明の実施の形態３による巻上機のブレーキ装置の凹型ボビンとこれに巻装されるコイルの形成構造を示す側面図であり、本実施形態において、凹型ボビン１０を用いてこれに巻線した場合には、図６（ａ）に示す如く凹型ボビン１０の窪み部１１の箇所でコイルとの間に隙間Ｃが生じてコイルが凹型ボビン１０の形状に沿わないことになる。そこで適用するコイルとして例えば自己融着電線などを用い、絶縁層を融着させることによってコイルを凹型ボビン１０の形状に沿わせ、保持する。 Embodiment 3 FIG.
FIG. 6 is a side view showing the formation structure of the concave bobbin and the coil wound around the brake device of the hoisting machine brake according to Embodiment 3 of the present invention. In this embodiment, the concave bobbin 10 is used. 6A, a gap C is formed between the concave bobbin 10 and the coil at the position of the recessed portion 11 of the concave bobbin 10, and the coil does not follow the shape of the concave bobbin 10. Therefore, for example, a self-bonding electric wire is used as the coil to be applied, and the coil is conformed to the shape of the concave bobbin 10 by fusing the insulating layer and held.

図６（ｂ）はコイルの融着手段の説明図であり、融着性コイル１２を凹型ボビン１０に巻装した後、押付治具１３を用いて窪み部１１に融着性コイル１２を所定の力で押付け、この状態で押付治具１３を介して加熱して融着性コイル１２の絶縁層を融着し、コイルを凹型ボビン１０とほぼ同じ形状に形成する。これによって所定のコイル巻装構造を持つ凹型ボビン１０を提供することができる。   FIG. 6B is an explanatory diagram of the coil fusion means. After the fusible coil 12 is wound around the concave bobbin 10, the fusible coil 12 is placed in the recess 11 using the pressing jig 13. In this state, the insulating layer of the fusible coil 12 is fused by heating through the pressing jig 13 to form the coil in substantially the same shape as the concave bobbin 10. Accordingly, the concave bobbin 10 having a predetermined coil winding structure can be provided.

この発明の実施の形態１による巻上機のブレーキ装置を示す正面図である。It is a front view which shows the brake device of the winding machine by Embodiment 1 of this invention. 可動鉄心が傾斜した場合を示す部分正面図である。It is a partial front view which shows the case where a movable iron core inclines. この発明の実施形態２を示す凹型ボビンとレバーとの関係構造を示し、（ａ）は側面図、（ｂ）は正面図である。The relationship structure of the concave bobbin and lever which shows Embodiment 2 of this invention is shown, (a) is a side view, (b) is a front view. 凹型ボビンを一体型固定鉄心に装着した状態を示す部分正面図である。It is a partial front view which shows the state which mounted | wore the integral type fixed iron core with the concave bobbin. 凹型ボビンの形状を示す側面図である。It is a side view which shows the shape of a concave bobbin. この発明の実施の形態３による巻上機のブレーキ装置の凹型ボビンとその巻製コイルの形成構造を示す側面図である。It is a side view which shows the formation structure of the concave bobbin of the brake device of the winding machine by Embodiment 3 of this invention, and its winding coil.

符号の説明Explanation of symbols

１ 電磁ブレーキ、２ ハウジング、３ ブレーキドラム、４ 可動鉄心、
５ ブレーキシュー、６ 一体型固定鉄心、７ メカニカルスイッチ、８ レバー、
９ 凹穴部、１０ 凹型ボビン、１１ 窪み部、１２ 融着性コイル。 1 electromagnetic brake, 2 housing, 3 brake drum, 4 movable iron core,
5 Brake shoes, 6 Integrated fixed iron core, 7 Mechanical switch, 8 Lever,
9 Recessed hole part, 10 Recessed bobbin, 11 Recessed part, 12 Fusing coil.

Claims (3)

電磁ブレーキの動作状態をモニタするスイッチなどを電磁ブレーキが動作する中心軸上に配置するとともに、上記電磁ブレーキに内蔵されるコイルのボビンに、スイッチレバーを挿入する窪み部を設けたことを特徴とする巻上機のブレーキ装置。 A switch or the like for monitoring the operation state of the electromagnetic brake is disposed on the central axis on which the electromagnetic brake operates , and a recess for inserting a switch lever is provided on the bobbin of the coil built in the electromagnetic brake. Brake device for hoisting machine. 上記ボビンの窪み形成箇所に、メカニカルスイッチの信号を拡大するためのレバーを配置したことを特徴とする請求項１記載の巻上機のブレーキ装置。2. The brake device for a hoisting machine according to claim 1, wherein a lever for enlarging a signal of the mechanical switch is arranged at a depression forming portion of the bobbin. 上記ボビンに形成した窪み部に治具を圧接して加熱し、上記ボビンに巻装した上記コイルを所定の形状に構成したことを特徴とする請求項１記載の巻上機のブレーキ装置。2. The hoisting machine brake device according to claim 1, wherein a jig is pressed against and heated by a recess formed in the bobbin, and the coil wound around the bobbin is formed in a predetermined shape.
JP2004003540A 2004-01-09 2004-01-09 Brake machine of hoisting machine Expired - Fee Related JP4455891B2 (en)

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