JP2004210484A - Shaft coupling for detecting no-load condition of lift by using screw and spring - Google Patents

Shaft coupling for detecting no-load condition of lift by using screw and spring Download PDF

Info

Publication number
JP2004210484A
JP2004210484A JP2002383776A JP2002383776A JP2004210484A JP 2004210484 A JP2004210484 A JP 2004210484A JP 2002383776 A JP2002383776 A JP 2002383776A JP 2002383776 A JP2002383776 A JP 2002383776A JP 2004210484 A JP2004210484 A JP 2004210484A
Authority
JP
Japan
Prior art keywords
screw
load
shaft
shaft coupling
female screw
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
Application number
JP2002383776A
Other languages
Japanese (ja)
Inventor
Takeshi Wami
健 和美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2002383776A priority Critical patent/JP2004210484A/en
Publication of JP2004210484A publication Critical patent/JP2004210484A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Transmission Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shaft coupling for detecting the position of a lift in a no-load condition or near to automatically stop it. <P>SOLUTION: In the shaft coupling A for connecting a driving machine C and the lift D to each other, the rotating power is transmitted between a screw shaft 2 and a female screw body 3, and a spring 4 is arranged to resist the axial directional force generated by the screw function. A projecting body 17 and a position detector 21 are arranged to work in the non-load condition or near arranged in the peripheral part of a female screw connector 6 to be moved in parallel with the shaft center. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、回転機構を介して荷重物を昇降する昇降機の、下降限界到達時の位置検出、及び衝撃吸収、過負荷防止に関するものである。
【0002】
【従来の技術】
従来のロープやチェーンを使用する昇降機にあっては、荷重物が下降限界に到達時、人の目で確認をして停止していた。
【0003】
【発明が解決しようとする課題】
従来のロープやチェーンを使用する昇降機にあっては、荷重物が下降限界に到達時、必ず人が付いていなければならなかった。
【0004】
本発明は、ロープやチェーンを使用する昇降機にあっては、人が付いていなくとも、ロープやチェーンを弛ませることなく自動停止をしたり、ラックやアーム等の剛体を使用する昇降機にあっては、無負荷時に停止させることにより、下降限界面や障害物、又は昇降機の機構に与える力を小さくすることができる。
【0005】
【課題を解決するための手段】
上記目的を達成するために、ロープやチェーン及びラックやアーム等を使用する昇降機に対しては、軸継手において、軸方向力によって回動しうる滑動ネジのネジ軸とメネジ体の間で回転動力を伝導させ、そのネジ機能によって生ずる軸方向力に抗する形でバネを配置し、メネジ連結体の外周部に、無負荷時に作用すべく、突起体と位置検出器を配置する。
【0006】
そして、ラックやアーム等の剛体のみを使用する昇降機にあっては、上記滑動ネジ部に、軸方向力によって回動しえない非滑動ネジを使用してもよい。
【0007】
また、軸継手のメネジ連結体の外周部に、過負荷時に作用すべく、突起体と位置検出器を配置してもよい。
【0008】
さらに、無負荷時、過負荷時の位置検出を容易にしたり、衝撃吸収を良くするために、無負荷近くで働く弱いバネと、荷重から荷重より強い力で働く強いバネ等、複数の強さのバネを使用した軸継手とするのもよい。
【0009】
【発明の実施の形態】
発明の実施の形態を実施例にもとづき図面を参照して説明する。
図1aにおいて、駆動機Cに直結で軸継手Aを連結して昇降機Dに動力を伝導し、ロープやチェーンE、又はラック等を介して荷重物Gを昇降し、下降限界面Lにて自動停止する。
【0010】
図1bにおいて、駆動機Cに直結で軸継手Aを連結して昇降機Hに動力を伝導し、アームIを介して荷重物Jを昇降し、下降限界面Lにて自動停止する。
【0011】
図2において、駆動機Cよりチェーン又はベルトKを介して軸継手Bに動力を伝導し、昇降機Dを回動させ、ロープやチェーンE、又はラック等の剛体を介して荷重物Gを昇降し、下降限界面Lにて自動停止する。
【0012】
図3、図4、図5、図6、図7に示される実施例では、ネジ軸2の外周にボール1を介してメネジ体3を配置し、メネジ連結体6、7と非駆動体9、10とをスベリキー等8を介して連動させる。また、メネジ連結体6、7の内側に、バネ押し座11、12を配置し、非駆動体9、10の外側に配置したバネ4、5を押す。なお、ネジ軸2に、軸受13を介して非駆動体9、10を支持し、非駆動体9、10には、たわみ軸継手14、15やプーリー、スプロケット、歯車等16を連結する。またメネジ連結体6、7の外周部に無負荷時に作用する突起体17、19、又は過負荷時に作用する突起体18、20を配置する。そして、位置検出器21を作動させる。
【0013】
図8に示される実施例では、ケージ22に多数のボール1を納め、ネジ軸23とメネジ体24の間に配置して滑動ネジとする。
【0014】
図9aに示される実施例では、リード角の大きなネジ軸25とメネジ体26を配置して滑動ネジとする。
【0015】
図9bに示される実施例では、小さなリード角のネジ軸27とメネジ体28を配置して非滑動ネジとする。
【0016】
【発明の効果】
本発明は、以上説明したように構成されているので、以下に記載されるような効果を奏する。
【0017】
上記のような構成で滑動ネジとバネを使用した軸継手において、無負荷時に作用すべく突起体と位置検出器を配置することによって、ロープやチェーンを使用する昇降機にあっては、荷重物が下降限界面に到達時、適切な位置に自動停止させることができる。又、ラックやアーム等の剛体を使用する昇降機にあっては、下降限界面や障害物、又は昇降機の機構に与える力を小さくすることができる。
【0018】
そして、軸方向力によって回動しえない非滑動ネジを使用した軸継手に、無負荷時に作用すべく突起体と位置検出器を配置することによって、ラックやアーム等の剛体を使用する昇降機にあっては、下降限界面や障害物、又は昇降機の機構に与える力を小さくすることができる。。
【0019】
さらに、上記軸継手において、荷重に適合したバネを使用することにより、荷重物が下降限界面や障害物、又は上昇限界に到達時、荷重物と衝突部や、回転動力機構にかかる衝撃吸収をすることができる。
【0020】
また、上記軸継手において、過負荷時に作用すべく突起体と位置検出器を配置することによって、過負荷防止をすることができる。
【0021】
また、上記軸継手において、複数の強さのバネを配置することにより、大きな荷重、又は小さな荷重に適応した衝撃吸収と過負荷防止や、これらの荷重が下降限界に到達時の、無負荷附近での位置検出が容易にできる。
【図面の簡単な説明】
【図1】(a)、(b)はA軸継手の実施例を示す配置図である。
【図2】B軸継手の使用例を示す配置図である。
【図3】A軸継手の実施例を示す縦断面図で、各1本づつで複数の強さのバネを使用し、負荷がかかっていない場合を示す。
【図4】A軸継手の実施例を示す縦断面図で、各1本づつで複数の強さのバネを使用し、負荷がかかっている場合を示す。
【図5】A軸継手の実施例を示す縦断面図で、各数本づつで複数の強さのバネを使用し、負荷がかかっていない場合を示す。
【図6】(a)は、図3、図4、図7におけるM−M断面図である。
(b)は、図5におけるN−N断面図である。
【図7】B軸継手の実施例を示す縦断面図で、各1本づつで複数の強さのバネを使用し、負荷がかかっていない場合を示す。
【図8】(a)は、ボールネジの形態例を示す縦断面図である。
(b)は、ボールをケージに納めた状態を示す断面図である。
【図9】(a)は、大きなリード角の滑動ネジを示す縦断面図でる。
(b)は、小さなリード角の非滑動ネジを示す縦断面図である。
【符号の説明】
A軸継手 軸直結形軸継手
B軸継手 プーリー、スプロケット、歯車等により伝導する形の軸継手
C 駆動機
D 昇降機
E ロープやチェーン
F ラック等の剛体
G 荷重物
H 昇降機
I アーム
J 荷重物
K チェーン又はベルト
L 下降限界面
1 ボール
2、23、25、27 ネジ軸
3、24、26、28 メネジ体
4、5 バネ
6、7 メネジ連結体
8 スベリキー等
9、10 非駆動体
11、12 バネ押し座
13 軸受
14、15 たわみ軸継手等
16 プーリー、スプロケット、歯車等
17、18、19、20 突起体
21 位置検出器
22 ケージ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to detection of a position of a lift that lifts and lowers a load via a rotation mechanism when a descent limit is reached, absorption of shock, and prevention of overload.
[0002]
[Prior art]
In a conventional elevator using a rope or a chain, when a load reaches a descent limit, the load is checked by human eyes and stopped.
[0003]
[Problems to be solved by the invention]
In conventional elevators using ropes and chains, when the load reaches the descent limit, a person must always be attached.
[0004]
The present invention relates to an elevator using a rope or a chain, which automatically stops without slackening the rope or the chain, or uses a rigid body such as a rack or an arm, even without a person. By stopping the motor when there is no load, the force applied to the descending limit surface, an obstacle, or the mechanism of the elevator can be reduced.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, for a lift using a rope, a chain, a rack, an arm, or the like, at a shaft coupling, a rotational power is transmitted between a screw shaft of a sliding screw that can be rotated by an axial force and a female screw body. And a spring is arranged in such a manner as to oppose the axial force generated by the screw function, and a projection and a position detector are arranged on the outer peripheral portion of the female screw connection body so as to act when there is no load.
[0006]
In an elevator using only a rigid body such as a rack or an arm, a non-sliding screw that cannot be rotated by an axial force may be used for the sliding screw.
[0007]
Further, a protrusion and a position detector may be arranged on the outer peripheral portion of the female screw connection body of the shaft coupling so as to act when overloaded.
[0008]
Furthermore, in order to facilitate position detection during no load and overload, and to improve shock absorption, multiple strengths such as a weak spring that works near no load and a strong spring that works with more force than load from load It is good also as a shaft coupling using the spring of.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described based on examples with reference to the drawings.
In FIG. 1a, a shaft coupling A is directly connected to a driving machine C to transmit power to an elevator D, and a load G is raised and lowered via a rope, a chain E, a rack, or the like. Stop.
[0010]
In FIG. 1b, the shaft coupling A is directly connected to the driving machine C to transmit power to the elevator H, and the load J is raised and lowered via the arm I, and automatically stopped at the lower limit plane L.
[0011]
In FIG. 2, power is transmitted from a driving machine C to a shaft coupling B via a chain or a belt K, an elevator D is rotated, and a load G is raised and lowered via a rigid body such as a rope, a chain E, or a rack. Automatically stops at the lower limit plane L.
[0012]
In the embodiment shown in FIGS. 3, 4, 5, 6, and 7, the female screw body 3 is disposed on the outer periphery of the screw shaft 2 via the ball 1, and the female screw coupling bodies 6, 7 and the non-driving body 9 are arranged. , 10 are interlocked with each other via a slide key or the like 8. Further, the spring pressing seats 11 and 12 are arranged inside the female screw coupling bodies 6 and 7, and the springs 4 and 5 arranged outside the non-driving bodies 9 and 10 are pressed. In addition, the non-driving bodies 9 and 10 are supported on the screw shaft 2 via bearings 13, and the non-driving bodies 9 and 10 are connected to flexible shaft couplings 14 and 15, pulleys, sprockets, gears and the like 16. In addition, protrusions 17 and 19 that act when there is no load or projections 18 and 20 that act when there is no load are arranged on the outer peripheral portions of the female screw coupling bodies 6 and 7. Then, the position detector 21 is operated.
[0013]
In the embodiment shown in FIG. 8, a number of balls 1 are housed in a cage 22 and arranged between a screw shaft 23 and a female screw body 24 to form a sliding screw.
[0014]
In the embodiment shown in FIG. 9A, a screw shaft 25 having a large lead angle and a female screw body 26 are arranged to form a sliding screw.
[0015]
In the embodiment shown in FIG. 9b, a screw shaft 27 having a small lead angle and a female screw body 28 are arranged to form a non-sliding screw.
[0016]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0017]
In a shaft coupling using a sliding screw and a spring in the above configuration, by arranging a projection and a position detector to act when there is no load, in an elevator using a rope or chain, the load When reaching the descending limit surface, it can be automatically stopped at an appropriate position. Further, in an elevator using a rigid body such as a rack or an arm, a force applied to a lower limit surface, an obstacle, or a mechanism of the elevator can be reduced.
[0018]
And, by arranging a projection and a position detector to act when there is no load on a shaft coupling using a non-sliding screw that cannot rotate due to an axial force, a lift using a rigid body such as a rack or arm can be used. In this case, the force applied to the lower limit surface, the obstacle, or the mechanism of the elevator can be reduced. .
[0019]
Furthermore, in the above-mentioned shaft coupling, by using a spring adapted to the load, when the load reaches the descent limit surface or obstacle, or the ascent limit, the load absorbs the impact on the collision portion or the rotating power mechanism when reaching the limit. can do.
[0020]
Further, in the shaft coupling, by disposing the protrusion and the position detector so as to act at the time of overload, overload can be prevented.
[0021]
In addition, in the above-described shaft coupling, by disposing a plurality of strength springs, it is possible to absorb shocks and prevent overload adapted to a large load or a small load, or to perform near-no-load when these loads reach a descent limit. Can easily detect the position.
[Brief description of the drawings]
FIGS. 1A and 1B are layout diagrams showing an embodiment of an A-axis joint. FIG.
FIG. 2 is a layout view showing a usage example of a B-axis joint.
FIG. 3 is a longitudinal sectional view showing an embodiment of the A-axis joint, showing a case where a plurality of springs are used one by one and no load is applied.
FIG. 4 is a longitudinal sectional view showing an embodiment of an A-shaft joint, showing a case where a load is applied using a spring having a plurality of strengths one by one.
FIG. 5 is a longitudinal sectional view showing an embodiment of an A-shaft coupling, showing a case where a plurality of springs are used for each of several pieces and no load is applied.
FIG. 6A is a sectional view taken along line MM in FIGS. 3, 4, and 7;
(B) is NN sectional drawing in FIG.
FIG. 7 is a longitudinal sectional view showing an embodiment of a B-axis joint, showing a case where a spring having a plurality of strengths is used for each one and no load is applied.
FIG. 8A is a longitudinal sectional view showing an example of the form of a ball screw.
(B) is sectional drawing which shows the state which accommodated the ball in the cage.
FIG. 9A is a longitudinal sectional view showing a sliding screw having a large lead angle.
(B) is a longitudinal sectional view showing a non-sliding screw with a small lead angle.
[Explanation of symbols]
A-shaft joint Shaft-joint type shaft joint B-shaft joint Shaft joint C that is conducted by pulleys, sprockets, gears, etc. Or belt L lowering limit surface 1 ball 2, 23, 25, 27 screw shaft 3, 24, 26, 28 female screw body 4, 5 spring 6, 7 female screw connecting body 8, sliding key etc. 9, 10 non-driving body 11, 12 spring pushing Seat 13 Bearing 14, 15 Flexible shaft coupling, etc. 16 Pulley, sprocket, gear, etc. 17, 18, 19, 20 Projection body 21 Position detector 22 Cage

Claims (5)

ボール(1)がネジ軸(2)から離れて循環する形のボールネジや、ケージ(22)に納められた多数のボール(1)がネジ軸(23)とメネジ体(24)の間を移動する形のボールネジ、又は軸方向力によって回動しうる大きなリード角のネジ軸(25)とメネジ体(26)によって構成された、それぞれの滑動ネジのネジ軸とメネジ体の間に回転動力を伝導させ、そのネジ機能によって生ずる軸方向力に抗する形でバネ(4a)、(5a)を配置した軸継手(A)、(B)の、メネジ連結体(6)、(7)の外周部に突起体(17)、(19)を配置し、その外部に、無負荷時に突起体(17)、(19)に作用する位置に、位置検出器(21)を配置した、昇降機の無負荷を検出する軸継手。A ball screw in which the ball (1) circulates away from the screw shaft (2) or a large number of balls (1) contained in a cage (22) move between the screw shaft (23) and the female screw body (24). A rotary power is supplied between the screw shaft of each sliding screw and the female screw body, which is constituted by a ball screw having a large lead angle that can be rotated by an axial force or a screw shaft (25) having a large lead angle and a female screw body (26). Outer periphery of the female threaded coupling bodies (6) and (7) of the shaft couplings (A) and (B) in which the springs (4a) and (5a) are arranged so as to conduct and resist the axial force generated by the screw function. The projections (17) and (19) are arranged on the portion, and a position detector (21) is arranged outside the projection at a position acting on the projections (17) and (19) when no load is applied. Shaft coupling to detect load. ネジ軸(27)とメネジ体(28)に、軸方向力によって回動しえない小さなリード角の非滑動ネジを使用した、請求項1記載の昇降機の無負荷を検出する軸継手。The shaft coupling for detecting no load of an elevator according to claim 1, wherein a non-sliding screw having a small lead angle which cannot be rotated by an axial force is used for the screw shaft (27) and the female screw body (28). 荷重物(G)、(J)が下降限界面(L)、又は障害物、又は上昇限界に到達時、荷重物と衝突部や、回転動力機構にかかる衝撃吸収をもする請求項1、又は2記載の昇降機の無負荷を検出する軸継手。When the loads (G) and (J) reach a lower limit surface (L), an obstacle, or an upper limit, the load and a collision part, and also absorb a shock applied to a rotary power mechanism, or 2. A shaft coupling for detecting no load of the elevator according to 2. メネジ連結体(6)、(7)の外周部に、過負荷時に位置検出器(21)に作用すべく、突起体(18a)、(20a)、又は(18b)、(20b)を配置し、過負荷防止をもする請求項1、又は2、3記載の昇降機の無負荷を検出する軸継手。Projections (18a), (20a), (18b), and (20b) are arranged on the outer peripheral portions of the female screw coupling bodies (6) and (7) so as to act on the position detector (21) when overloaded. 4. The shaft coupling for detecting no load of an elevator according to claim 1, which also prevents overload. (4a)、(5a)を弱いバネとし、その他に強いバネ(4b)、(5b)等、複数の強さのバネを配置した請求項1、又は2、3、4記載の昇降機の無負荷を検出する軸継手。The no-load of the elevator according to claim 1, wherein the (4a) and (5a) are weak springs and the springs having a plurality of strengths such as strong springs (4b) and (5b) are arranged. To detect the shaft coupling.
JP2002383776A 2002-12-26 2002-12-26 Shaft coupling for detecting no-load condition of lift by using screw and spring Pending JP2004210484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002383776A JP2004210484A (en) 2002-12-26 2002-12-26 Shaft coupling for detecting no-load condition of lift by using screw and spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002383776A JP2004210484A (en) 2002-12-26 2002-12-26 Shaft coupling for detecting no-load condition of lift by using screw and spring

Publications (1)

Publication Number Publication Date
JP2004210484A true JP2004210484A (en) 2004-07-29

Family

ID=32818407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002383776A Pending JP2004210484A (en) 2002-12-26 2002-12-26 Shaft coupling for detecting no-load condition of lift by using screw and spring

Country Status (1)

Country Link
JP (1) JP2004210484A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103641011A (en) * 2013-12-24 2014-03-19 大连华锐重工集团股份有限公司 High-performance hook free falling hoisting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103641011A (en) * 2013-12-24 2014-03-19 大连华锐重工集团股份有限公司 High-performance hook free falling hoisting mechanism

Similar Documents

Publication Publication Date Title
ES2373146T3 (en) MOTORIZED CLIMBING EQUIPMENT BY ROPE.
CA2126122C (en) Traction sheave elevator with drive machine below
EP2749522A1 (en) Vertical support structure and lifting device having the same
WO2002059028A3 (en) Elevator
KR101293450B1 (en) Bench press
JPS5917025B2 (en) Lifts, especially stair lifts
CA2438037A1 (en) Reciprocatingly movable body drive mechanism and elevator apparatus incorporating same
KR20170075465A (en) Handle-type heavy goods carrier capable of flat operation
CN107792347A (en) A kind of steering wheel with arrangement of clutch
JP2004210484A (en) Shaft coupling for detecting no-load condition of lift by using screw and spring
CA2281259A1 (en) Load-handling device
WO2005035420A2 (en) Improvements to a passenger or freight lift based on the use of chains, counterweights and servomotors
JP4055736B2 (en) Boarding robot
CN206972146U (en) Anti-fall formula climbing assistant device
KR20120043792A (en) Counterweight-less elevator
CN112850566B (en) Lifting device and automatic guiding transport vehicle
JP5181897B2 (en) Lifting device and gantry loader
WO2012150624A1 (en) Door opening-closing device for elevator
WO2021114999A1 (en) Elevator with height calibration function
CN210795425U (en) Double-power doubling-up deceleration stop-making elevator
JP3383481B2 (en) Elevator threshold clearance reduction device
CN114148849A (en) Car elevator trouble emergency rescue system
EP0131380A1 (en) Hoist
CN112942011A (en) Wheelchair uphill and downhill auxiliary equipment for barrier-free passage
KR200269290Y1 (en) safety device for lift