WO2008130062A1

WO2008130062A1 - Overload adaptive and non-step controllable winch

Info

Publication number: WO2008130062A1
Application number: PCT/KP2008/000014
Authority: WO
Inventors: Nung Jun Tae; Yong Chol Kim; Yong Il Tae
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-23
Filing date: 2008-04-23
Publication date: 2008-10-30
Anticipated expiration: 2009-10-23

Abstract

This invention relates to the overload adaptive and non-step controllable winch which could provide self-braking, non-step reduction, non-step increase, overload adaptive control, remote control, automatic control and high precise grade of the rotation. The structural feature is that the speed reducer having the fixed support point is contained in the winch drum, and the worm gearing is suitably combined with the driven shaft of the said speed reducer, and the worm shaft becomes the control shaft, and the rotation speed of the winch drum is reduced or increased according to the rotation speed of the control shaft.

Description

Overload adaptive and non-step controllable winch

Field of the invention

This invention relates to the winch, particularly to the overload adaptive and non-step controllable winch which could provide self-braking, non-step reducing, non-step acceleration, overload adaptive control, remote control, automatic control.

Background of the invention

Nowadays, there are various species of the winch in hoisting machinery.

The winch is consisted of drum, gear reducer, brake, motor, electrical device for controlling the motor, which is complicate in structure. The international patent application PCT/KP2005/000005 discloses the self-braking winch using lever principle, which contains self-braking driving gear using lever principle in drum.

The int.pat.appl.PCT/KP2005/000006 discloses the self-braking winch using force increasing law in wedge, which contains the self-braking driving gear using the force increasing law by wedge in drum. The EP 1547963 discloses the winch that overcomes overload by regulating the driving power of the winch when the overload occurs. ^•

The EP 1308414 discloses a winch that has sensing device on overload.

In addition a numerous patents deal with the winches that use the structural form composed drum, driving gear, brake and motor. The conventional winches including above mentioned one could only non-step reduce or could not non-step acceleration and gain increase force in non-step reduce, because these could not change reduction ratio and these use control by driving motor.

Such winches also could not perform non-step reduce and acceleration and overload adaptive control in a winch driving gear and are difficult to do remote control and automatic control. These are not bring to gain in substantial force increase during the speed reduction, therefore it means that result in loss in use of energy.

Also, these have complicated structure and fulfil speed change through several driving processes and not single.

Summary of the invention. The object of the present invention is to provide non-step speed controllable winch that has a simple structure and high driving efficient, as well as can use effectively power and fulfil non- step reduction and increase.

The another object of the present invention is to provide a overload adaptive and non-step controllable winch that fulfil not only non-step reduction and increase but also overload adaptive control, remote control and automatic control so that the driving motor can be protected. The structural feature of the overload adaptive and non - step controllable winch according to present invention is that that the speed reducer which can obtain high ratio of the speed reduction in first step and has the fixed support point is contained in winch drum, and the fixed support point of said speed reducer is suitably combined to the winch drum, and the worm gearing is suitably combined with the driven shaft of the said speed reducer , and the worm shaft becomes the control shaft , and the rotation speed of the winch drum is reduced or increased according to the rotation speed of the control shaft.

And the drum revolves in a fixed sleeve of shaft, therefore the driving and control shafts only subject torque, a not bending, consequently, the diameter of the shaft is smaller than the conventional winch. This typed winch can be made by converting the housing of a speed reducer containing a fixed support point into a drum and by combining the driven shaft with a self-braking worm gearing. The speed reducers comprising a fixed support point, for example, are the " Lever-type gear reducer" disclosed in PCT/KP2005/000005 and the "Ball wedge type gear reducer" disclosed in PCT/KP2005/0000006, and the control shaft can be made by combining the self-braked worm with the driven shaft of the reducer.

In one embodiment of the present invention it is shown the overload adaptive and non-step controllable winch (internal gearing type and external gearing type), in winch a drum is mounted on a supporting gear (fixed support point) of "Lever type gear reducer" ,and a worm gearing is combined with the driven shaft outside of supporting point of the winch drum. In another embodiment of the present invention it is shown the overload adaptive and non-step controllable winch (ball-wedge type), in which drum is mounted on guide sleeve (fixed support point) of the " ball-wedge type speed reducer" ,and a worm gearing is combined with the driven shaft outside of the rotation support of the drum. The structural feature of the overload adaptive and non-step speed controllable winch according to the present invention is that the speed reducer is incorporated in the drum which comprises fixed support point ,and the drum is mounted on the fixed support point, and the self-braking worm gearing is combined with the driven shaft of the speed reducer so that the winch can fulfil non-step speed reduction and increase, stop and reverse rotation depend on rotation speed of the control shaft(worm shaft). In addition its another feature is that the winch fulfils stop, right and left rotation control, non- step control, overload adaptive control, remote control and automatic control by connecting operating motor to control shaft and by connecting a control device to the operating motor. In the overload adaptive and non-step speed controllable winch the driving shaft and driven shaft do not subject bending, but only torque, and a energy transmitted to driving shaft do not affects to the control shaft, but only to the drum.

The said overload adaptation and non-step controllable winch can operate the machines with better flexible character than hydraulic driving. According to the character of the load change of the machines, each time when the load changes occur, impulse of the load change of the leading motor is delivered to the operating motor and thus it makes leading motor to drive always in a certain horsepower by changing the ratio of the speed reduction. Therefore, this character can lengthen the working life of the motor.

If the overload adaptation and non-step controllable winch of the present invention is used instead of hydraulic gear in the machines which use hydraulic driving, it can have better character, because of the quickness of the mnvpmpnt Brief description of the drawings.

In order to more fully understand the present invention now it will further more explain in detail with referring accompanying the drawings.

The Fig 1 is a schematic drawing of the principle of the overload adaptive and non-step controllable winch of the present invention.

The Fig 2 is the drawing shown structure of the overload adaptive and non-step controllable winch of the present invention (Ball-wedge type winch).

The Fig 3 is the drawing shown structure of the overload adaptive and non-step controllable winch of the present invention ( internal engagement lever type). The Fig 4 is the drawing shown structure of the overload adaptive and non-step controllable winch of the present invention (external engagement lever type).

The Fig 5 is the graphic drawing shown speed-character of the overload adaptive and non-step controllable winch of the present invention.

The Fig 6 is drawing shown control principle of the overload adaptive and non-step controllable winch of the present invention.

Detailed description of the preferred embodiments

The fig 1 shows a principal drawing of the overload adaptive and non-step controllable winch of the present invention.

As shown in fig 1, the power carried on the driving, shaft (ni, Mi) do not affects to the control shaft, but is transmitted to the winch drum(ri2, M2) and the power carried on the control shaft

(ro, M3) do not affects to the driving shaft, but is transmitted to the drum (C) (m, Mz), which are expressed as arrow direction in the fig 1.

Considering from viewpoint of output, it is represented as follows;

Wherein Ni is power of driving shaft, N3 is power of control shaft, N2 is power of drum, 77 1 is mechanical efficiency from driving shaft to the drum ,and 77 3 is mechanical efficiency on the control shaft.

This shows that the rotation speed (m) of the drum can be controlled optionally depend on the rotation speed (m) of the control shaft. The important point in the overload adaptive and non-step controllable winch on the basis of the above mentioned principle is to construct a winch such that it comprises the driving shaft, control shaft and drum, and wherein rotation speed of the drum increases or reduces depend on rotational direction and rotation speed control shaft.

And at the same time, it is to set the driven shaft to the drum so that the driving shaft and control shaft do not subjects bending, but only torque.

The such typed winch can be made by converting the housing of the speed reducer containing the fixed support point into drum and by combining driven shaft with the self-braking worm gearing.

The speed reducer containing fixed support point, is for example " lever type gear speed Brief description of the drawings.

The Fig 2 is the drawing shown structure of the overload adaptive and non-step controllable winch of the present invention (Ball- wedge type winch).

Detailed description of the preferred embodiments

(n3, M3) do not affects to the driving shaft, but is transmitted to the drum (C) (112, M2), which are expressed as arrow direction in the fig 1.

Considering from viewpoint of output, it is represented as follows; Wherein Ni is power of driving shaft, N3 is power of control shaft, N2 is power of drum, 77 1 is mechanical efficiency from driving shaft to the drum ,and Tj 3 is mechanical efficiency on the control shaft.

The speed reducer containing fixed support point, is for example " lever type gear speed reducer" (Int. Patent' application PCT/KP2005/000005) and "Ball wedge type speed reducer" (Int. Patent application PCTTKP 2005/000006) and as control shaft, self-braking worm gearing is mounted.

In the embodiments of the present invention it is showed the overload adaptive and non-step controllable winch that its support gear (fixed support) is combined with the worm, disclosed in the PCT/kp2005/000005 "Lever type speed reducer" and that its guide sleeve (fixed support point) is combined with the worm, disclosed in the PCT/KP2005/000006 "Ball wedge type speed reducer".

Example 1 : Overload adaptive and non-step controllable winch (ball-wedge type ) In Fig 2 it is showed the structure of overload adaptive and non-step controllable winch wherein the drum is mounted on the guide sleeve (fixed support point) of the ball-wedge type speed reducer.

This winch is comprised the driving shaft (Al), shaft support (A2) of the drum, the drum (A3), a wire rope (A4), the control shaft (A5), a driving wedge wheel (A6), a plurality of ball (A7), a driven wedge (A8), a guide sleeve (A9) and a worm wheel (AlO).

The driving wedge wheel (A6) is rigidly fixed on the driving shaft(Al), and the driving shaft is supported with a bearing so that the drum can be rotated on the driven shaft.

The worm wheel (AlO) is rigidly fixed on the driven wedge(A8), so it can rotate around the driving shaft (Al) with the driven wedge (A8). The driven wedge (A8) can not rotate without a rotation of the control shaft because the worm that is monolithic with the control shaft is gearing with the worm wheel (AlO).

Between the driving wedge (A6), control wedge (A8), and guide sleeve (A9) the balls are disposed.

The driving shaft (Al) is supported by the bearings so that it can rotate , and the control shaft(A5) is supported by t he bearings so that it makes to be rotated the driven shaft of the dram (A3). The guide sleeve is rigidly mounted on the dram (A3) by the bolt.

In the two sides of the dram (A3) two axial plates are set, and the hollow axle which is fixed on the axial plate is provided to be rotate with support on the two of axial supports (A2).

The driving wedge (A6) which is rigidly mounted on the driving shaft is a wedge profile formed in a ring formal, vertical to the driving shaft.

The driven wedge (A8) has a closed profile formed by a plurality of wedges wherein there are number of balls between the driven wedge (A8) and the driving wedge (A6) ,and two wedges profiles are the profile of half-circular groove, thereby the balls can be line contact with the groove. In the guide sleeve (A9) the transversal grooves of half-circular are formed parallel to the driving shaft (Al).

The number of the transversal grooves of the guide sleeve (A9) is one more or less than the number of the driven wedges (A8).

When the driving shaft is rotating, the rotation speed of the drum is ri2 = ni I (Z + Y) and a driving ratio of the winch is I = Z+ 1, because it happens differential driving. • The non-step controllable function

The overload adaptive and non-step controllable winch as shown in Fig 2 can be non-step controlled by the control shaft (A5).

If the worm wheel (AlO) rotates in the same direction with the driving shaft (Al), the balls (A7) roll along the grooves in the driven wedge profile (A8), then it makes the guide sleeve(A9) to non-step reduce or increase.

Due to self-braking of the worm gearing the overload adaptive and non-step controllable winch also still retain the self-braking properly, therefore it is not affected to the driving efficiency of the winch. Furthermore, when the driving shaft(Al) rotates, the force causing the rotation in the same direction as the driving shaft, apply to the driven wedge (A8), so the worm gearing could be operated with the operating motor of low-horsepower too.

When control shaft (ri3 ) rotates, rotation speed (m')of drum (A3) is as follows; ri2' = ri2 - km r/min , F = ήi / (n.2 - kri3 ) Here, n.2 is the rotation speed of the drum when the control shaft don't rotates, and n.3 is the rotation speed of control shaft ,and k is the amplifying coefficient ,and the amplifying ratio H,

As mentioned above, the winch has the amplifying coefficient k and amplifying ratio H as its characteristic parameters, and in order to enhance its non-step control capacity the parameters should be selected so that the amplifying coefficient k is bigger as possible.

Example 2. The overload adaptive and non-step controllable winch (lever type).

1) The overload adaptive and non-step controllable winch (internal engagement lever type) Fig 3 shows the overload adaptive and non-step controllable winch in which the supporting gear (fixed support) is fixed in drum (B3) and a control gear (B8) is combined with a worm (control shaft).

The winch is composed of a driving shaft (Bl), shaft support (B2) of the drum, the drum (B3), a wire rope (B4), a control shaft (B5), lever gears (B6, B7), a driven gear (B8), a fulcrum gear (B9), a worm wheel (BlO) and a setting frame (Bl 1) for a lever gear. The lever gears (B6, B7) as monolithic is fixed on the frame (Bl 1) to be rotated freely and the setting frame (BI l) and driving shaft (Bl) as monolithic or a rigid assembly can be rotated together when the driving shaft rotates.

The driven gear (B 8) which is rigidly fixed with the worm wheel (BlO) via driven shaft can be rotated with it and can be freely rotated by the support of bearing on the hollow axle of the drum (B3). The driven gear (B8) rotates only when it is controlled by the worm. In lever gears (B 6, B 7) B 7 is engaged with the fulcrum gear (B 9) and B 6 is engaged with driven gear (B8), thus B6 is supported on the driven gear (B8) while B7 makes the supporting gear (B9) rotate according to the lever principle.

The worm wheel (BlO) is engaged with the worm which is monolithic with control shaft (B5) and the driven gear(B8) is inhibited so that not to rotate by the worm. The driven gear (B8) can rotate only with the rotation of the control shaft. In the overload adaptive and non-step controllable winch of the present invention, in order that the teeth of gears are engaged with each other, and so as to provide their self-brake and to gain bigger ratio of the reduction speed even with small teeth, if (Zb8-Zb6)=(Zb9-Zb7) , then the gear is not corrected and if (Zb8-Zbό)>(Zb9-Zb7) or if (Zb8-Zb6)<(Zb9-Zb7), then Zb6,Zb7,Zb8,and Zb9 are corrected as + or - in correspondence to the calculated value by the lever principle so that the gear is engaged, in case of internal engagement as shown in Fig 3. Here, Zb6,Zb7,Zb8,and Zb9 are the tooth numbers of the lever gear(B6,B7),control gear(B8) and fulcrum gear (B 9) 2) The overload adaptive and non-step controllable winch (external engagement lever type)

Fig 4 shows the external engagement overload adaptive and non-step controllable winch in which a worm (control shaft) is combined to a driven gear (B8) and the fulcrum gear (fixed support) of the lever type gear reducer is fixed onto a drum (B3),

The winch is composed of a driving shaft (Bl), shaft support (B2) of the drum, the drum (B3), a wire rope (B4), a control shaft (B5), lever gears (B6, B7), a driven gear (B8), a fulcrum gear

(B9), a worm wheel (BlO) and a setting frame for lever gear (Bl 1).

The lever gears (B6, B7) as a monolithic are connected with a shaft and bearings so as to be freely rotated on the frame (Bl 1) and its number are more than two.

The frame (Bl 1) and the driving shaft (Bl) is a monolithic or a rigid assembly, so the frame can be rotated together with the driving shaft.

The driven gear (B 8) is rigidly fixed with worm wheel (BlO) via a driven shaft, it can be freely rotated by bearing supporting in the hollow axle of the drum (B3).

The driven gear (B8) is rotated only when the control shaft is rotated by the worm.

In the lever gears (B6, B7), B7 is engaged with the fulcrum gear (B9) ,and B6 is engaged with the driven gear (B8), and thus by supporting to the driven gear (B8), B7 makes the fulcrum gear (B9) rotate according to the lever principle.

The worm gear (BlO) are engaged with the worm, which is monolithic with the control shaft

(B5), and the driven gear (B8) is inhibited so that not to rotate by the worm.

In the overload adaptive and non-step controllable winch according to the present invention, in order that the teeth of gears are engaged with each other, and so as to provide their self-brake and to gain bigger ratio of the reduction speed even with small teeth, if (Zb₆+Zbs)>(Zb7+Zb9) , then the gear B7 and B9 are corrected as +, and if its opposite, the gears B6 and B8 are corrected as + ,in case of external gearing as shown in Fig 4.

At that time, the amount of the correction should be checked so that the distance between the engagement equals to the values calculated by the lever principle.

Here, Zb6,Zb7,Zb8 and Zb9 are the tooth numbers of the lever gear(B6,B7), driven gear(B8) and fulcrum gear (B 9) .

• Non-step controllable function

The overload control and non-step control winch shown in fig 3 and fig.4 carry out the function of non-step control. In fig 3 and fig. 4, when the worm wheel is rotated in the same direction as the driving shaft, the driven gear combined with it rotates in the same direction too and at that time, the rotation dislocation of the fulcrum gear by the lever is reduced.

Thus, the rotation speed of winch drum is non-step controlled by the rotation speed of the control shaft.

The worm gearing has the self-braking character, therefore, the winch preserve the character of the self-braking as it is and gives no effect to the driving efficiency of the winch. Furthermore, when the driving shaft rotates, the power apply to the driven gear to make the rotation in the same direction, so the worm driving can be operated with the operating motor of low-horsepower.

At that time, the rotation speed of the driven shaft is as follows, m' = n.2 - kri3 r/min and the ratio of the speed reduction is I = ru / (ri2 - kri3 ) rii is the rotation speed of the driving shaft, m is the rotation speed of the winch-drum when the control shaft don't rotates and m is the rotation speed of the control shaft. K is the amplification coefficient and it can be decided by the design parameter and the ratio of the worm speed reduction.

The amplification ratio of the winch speed is H=(n2 - kn.3 ) / rh

In order to increase the capability of the non-step speed reduction, the parameter should be selected so that to make K big. - Speed character of overload adaptive and non-step controllable winch

In Fig 5, the speed character of overload adaptive and non-step controllable winch is shown. Following examples are referred in order to consider the characteristic curve, indicating the function of the non-step speed reduction of said winch. When the parameter of the said winch are as follows; I = 49,Zb6 = 20,Zb7 = 21,Zb8=36,Zb9=35, Iw=36, rii =1740 r/min, if D.3 =0, then m.' = 35.51 r/min, if n₃ = 1305 r/min then m' = 0 ,and if n₃ = 2610 r/min then n2' = -35.51r/min.

In the characteristic curve, the straight line of a,b,c and d shows the change of the rotation speed of the winch drum and shows that the change of the rotation speed of the winch drum is linear.

In the characteristic curve of Fig 5, the a-b is the interval of the speed increase, b-c is one of the speed reduction and c-d is one of contrary rotation.

Here, if the operating motor rotates in contrarily, it belongs to a-b, interval of the speed increase, and in the above example, at n.3 =0 - 1305 r/min, it belongs to the interval b-c and at ri3 = 1305-2161 , it belongs to the interval of the contrary rotation of the winch drum.

At Il3 =1305 r/min the winch drum is stopped.

The overload adaptive and non-step controllable winch of ball-wedge type has the same speed character too.

- Precision grade of the rotation. In case the overload adaptive and non-step controllable winch, designed and made with the above parameter, requires the rotation speed of winch drum m' = 15.102040821 r/min, winch drum could be operate at accurate m' = 15.102040821 r/min if ri3 is selected as 750 r/min. And if it is necessary to provide the accurate speed of m' = 55.915367351 r/min in case of the speed increase, the accurate ri2=55.918367351 r/min could be provided, if the operating motor works at n3 = - 750r/min.

That is, the accurate rotation speed, up to 10^'9 below the decimal point can be provided , so it contributes to the development of non-science and technology. - Overload adaptive and non-step control.

The overload adaptive and non-step controllable winch can realize overload adaptive and non- step control.

Fig 6 shows its schematic view of the control principle.

In fig.6 it consists of the driving shaft(l), the control shaft (2), the control line(3, 4) and the overload adaptive and non-step controllable winch and control device.

The driving motor is connected to the driving shaft (1), and the operating motor is connected to the control shaft(2)

The driving motor and operating motor are connected through the control line (3, 4)

The various kind of the winches generally comprises of; winch drum, speed reducer, breaking device and motor.

In such winches, the accident of the motor by the overloading can not be prevented without men's watch and control.

To avoid such accident, the winch that can provide the overloading control required.

This task is performed by overload adaptive and non-step controllable winch by comprising such as in fig. 6, the overload adaptive and non-step controllable winch can operate with more softness character than hydraulic driving because the electronic movement is faster than fluid speed and the efficiency is by far higher than fluid driving.

As shown in fig. 6,each time when the load-change of driving motor occurs, the impulse of the load-change is delivered to the operating motor, and then the rotation of the winch drum is reduced in correspondence with the characteristic curve (5) and thus the driving motor operates always only under fixed horsepower.

Therefore, the working life of the motor can be very longer.

In said control system the operating motor is in the status of the stop if the operating motor operates in the status of normal and it begins the rotation with the proportion speed to the overloading horsepower from the moment that the overloading occurs in operating motor.

The operating motor is selected according to the calculation and its horsepower is very lower than the driving motor. The speed control can be done by amplitude-phase control mode.

Preferred embodiments of the present inventions have now been described; however the changes will obviously occur to those skilled in the art without departing from the spirit thereof. It is therefore, intended that the invention is to be limited only by the scope of the appended claims.

Claims

1. Overload adaptive and non-step controllable winch is characterized in that the speed reducer which can obtain high ratio of the speed reduction in first step and has the fixed support point is contained in winch drum, and the worm gearing is suitably combined with the driven shaft of the said speed reducer , and the worm shaft becomes the control shaft , and the operating motor is connected to the control shaft ,and the control device is connected to the operating motor through the control lines so that it can provide the self-braking, non-step speed reduction, and non-step speed increase, and it can also provide the stop, right and left rotation of the winch without the stop of the driving motor and high precise grade of the rotation.

2. Overload adaptive and non-step controllable winch according to the claim 1 is characterized in that the said speed reducer is the lever type gear reducer or ball-wedge speed reducer, the driving shaft is one of said speed reducer and the control shaft is that the worm gearing is suitably combined to the driven shaft of the said speed reducer in outside of the rotation support of the winch drum.

3. The overload adaptive and non-step controllable winch according to the claim 1 or 2 is characterized in that the winch drum is fixed to the guide sleeve (the fixed support point) of the ball-wedge type speed reducer and the worm is suitably combined to the driven shaft of said speed reducer in outside of the rotation support of winch drum, and in particular, it is comprised of the driving shaft(Al), the support frame(A2) of winch drum, the winch drum(A3), rope (A4) of winch drum, control-shaft(A5), driving-wedge wheel(A6), several balls(A7), driven wedge wheel(A8) guide sleeve(A9), and worm wheel(AlO).

4. The overload adaptive and non-step controllable winch according to the claim 3 is characterized in that; the said driven wedge wheel (A8) is fixed to the self-braking worm wheel (AlO) so that it can not be rotated relatively to the drive shaft (Al), but can rotate in necessary cases; and the said several balls(A7) are properly placed between the driving-wedge wheel(A6) fixed with the driving-shaft, the driven wedge (A8) and guide sleeve (A9); and

- in the guide sleeve(A9) the semicircle groove is formed parallel to the driving shaft (Al), so that the balls can be moved freely when the driving wedge(A) rotates; and

- The bearing is set on the driven shaft of the winch drum so that the driving shaft (Al) and the driven wedge (A8) can freely rotate on one shaft ; and

The winch drum is not affected by the bend and only affected by torque because it is not supported with the driven wedge (A8) or the driving shaft(l), but supported by the support frame (A2).

5. Overload adaptive and non-step controllable winch according to the claim 1 or 2 is characterized in that the winch drum is fixed to the fulcrum gear (the fixed support point), and the worm gearing is suitably combined to the driven shaft of said speed reducer in outside of the rotation support of the winch drum, and in particular, it is comprised of driving shaft (Bl), shaft support (B2) of the drum, the drum (B3), a wire rope (B4), a control shaft (B5), lever gears (B6, B7), a driven gear (B8), a fulcrum gear (B9), a worm wheel (BlO) and a setting frame (BIl) for a lever gear.

6 . The said winch according to the claim 5 is characterized in that;

- the driven shaft and driving shaft ( Bl) are connected by bearing so that they can rotate relatively , and the driven shaft is fixed rigidly to the self-braking worm wheel(BlO) so that it can't rotate in necessary case; and

- the gears are corrected in order that the engaging element of first gear(B6) of the lever gear(B6,B7) is engaged with the driven gear (B8) and the engaging element of the second gear(B7) is engaged with the fulcrum gear(B9); and - The lever gear (B6,B7) is set to setting frame (BIl) which is united with the driving shaft(l) and the worm shaft i.e. control shaft (B3) is so set that the worm wheel (BlO) is engaged with the worm; and

- The driven shaft of the said speed reducer is set to the support frame of winch drum(3) so that the driving shaft(Bl) and driven shaft are not bended.

7. The overload adaptive and non-step controllable winch according to the claims lor 3 or 5 is characterized in that it can be operated by non-step control, overload adaptive control, remote control and automatic control if the driving motor is connected to the driving shaft, the winch drum to the fixed support point, the operating motor to the control device through the control line and the driving motor is feed back combination with_. the operating motor through the control line.