KR101384373B1 - Worm geared type break device for endless winder - Google Patents

Abstract

The present invention relates to a worm geared type brake device for an endless winder. The worm geared type brake device may prevent an output shaft from rotating in a reverse direction through a warm gear in parallel with power transmission without using a separate mechanical geared type brake. The worm geared type brake device includes: a worm shaft (150) communicated with a motor shaft (130), the worm shaft having a worm gear part (151) on an outer circumference thereof; a worm wheel (160) engaged with the worm gear part (151) of the worm shaft (150) and then rotated; a power transmission shaft (170) on which the worm wheel 160 is mounted to transmit a rotation power to a sheave (120) therethrough; an output shaft (180) receiving the power from the power transmission shaft (170) to drive the sheave (120); and a power transmission unit through which the rotation of the power transmission shaft (170) is transmitted to the output shaft (180). Thus, a driving system and components may be simplified, driving stability and reliability may be improved. Also, a high-performance endless winder may be provided at competitive prices, and the winder may extend in maintenance period and expected life span.

Description

Worm gear brake device of endless winder {WORM GEARED TYPE BREAK DEVICE FOR ENDLESS WINDER}

The present invention relates to a worm gear brake device of an endless winder, and more particularly, to a worm gear brake device of an endless winder for controlling the reverse rotation of an output shaft in parallel with power transmission through a worm gear.

The endless winder (endless winder), unlike the winch method used in the conventional gondola, that is, the winch method of winding the wire rope connected to the cage to the drum, fixes the wire rope to the upper support and rides the cage on the wire rope. Endless winder directly connected to the upper and lower drive method.

In the winch method, the height of the drum is limited because the size of the drum is limited, but the method of applying the endless winder has the advantage that the length of the wire rope can be applied indefinitely without the height limitation.

In addition, the conventional winch method has a disadvantage that the lifting speed increases as the upper portion is raised, but the endless winder is driven at a constant lifting speed regardless of the height.

According to the driving power source, it is divided into electric motor driving type and air motor driving type. In particular, air motor driving type can be used in gas handling area, risk of explosion, and no power supply area.

Endless winders have recently been used as core components for offshore wind tower lifts, as well as gondolas for shipbuilding and repairs, gondolas for building and maintaining buildings, etc. It is widely used in the construction and maintenance of nuclear power plants, gondola for other industrial purposes, installation and removal of golf practice protection nets, replacement of small hoists, installation of various cables, and maintenance of wind generators.

In general, the endless winder is composed of a drive motor, a gearbox that increases torque by reducing the number of revolutions, and a sheave that generates traction by compressing a wire rope. In detail, a case ass`y , Sheave ass`y, mechanical brake ass`y, 4nd pinion shaft ass`y, pawl ass`y, chain ass`y ), Counter ass`y, and clipper ass`y (refer to `` wet mechanical brake for winches '' in Korean Utility Model Application No. 20-2002-0013195).

1 is a view illustrating a general endless winder assembly and an assembly view showing an endless winder assembly to which a spur gearbox is applied. The spur gearbox requires a mechanical brake as shown in Figures 3 to 5, which is a separate mechanical brake.

The overall structure of the endless winder assembly, referring to FIG. 1, includes a motor shaft 11 and a motor shaft 11 passing through a motor 10 and a sheave 31 mounted in the transverse direction of the sheave casing 30. An interlocking first pinion shaft 12 is configured.

In addition, a first gear 13 and a second pinion shaft 14 meshed with the first pinion shaft 12 are formed inside the casing 24, and the shaft is concentric with the first pinion shaft 12. Third pinion shaft 15 is configured.

As shown in FIG. 4, the third pinion shaft 15 includes a ratchet wheel 16 to which the linings 18a and 18b are in close contact and a mechanical brake 20 to which the brake gear 17 is installed. A stopper 19 is mounted to the hub of the brake gear 17 along the third pinion shaft 15. Then, the ball bearings 19a and 19b, the oil seal 19c, the spacer 19d, the needle roller bearing 19e, and the snap ring 19f are provided, and one end of the third pinion gear 15 is provided with a first pinion. The gear 22 built in the 4 pinion shaft 23 is installed.

1 through 5 of the drawings attached to the prior art, 32 is a 'wire rope', 40 is a 'roller chain emulation', 42 is an inlet guide of the wire rope 32 opened in the sheave casing 30 (inlet guide), 43 is an outlet guide.

44 is the 'chain', 45 is the 'link' connecting the roller chain assembly 40 and the chain 44, 46 is the groove of the sheave 31 with the chain 44 as the axis of the link 45 It is a 'spring' squeezed on.

The mechanical brake 20 is a safety device that transmits rotational force by the input side drive motor 10 but prevents reverse rotation by the output side sheave 31 and thus prevents the electromechanical operation of the drive motor 10. The endless winder is prevented from being driven by the load acting on the sheave 31 when stopped due to a failure.

Conventional mechanical brake 20, the ratchet wheel 16, the stopper 19 is in close contact with the first to fourth pinion shaft 12, 14, 15, 23, lining (18a, 18b) ) Is a complex combination of braking gears (17) installed, the circumference of the ratchet wheel 16 is a spring (1) to receive a one-way elasticity to the pole shaft (25) installed in the casing (24) as shown in Figs. The first pinion shaft 12 or the motor shaft 11 corresponding to the final output shaft by controlling the reverse rotation of the pinion shaft is installed so that the pole 27 supported by 26 is engaged with the teeth of the ratchet wheel 16. Prevent reverse rotation.

Therefore, the portion preventing the reverse rotation is in contact with the lined ratchet wheel 16, the pole 27 for controlling the reverse rotation, and the hub of the brake gear 17 to stop the reverse rotation 19 This controls the reverse rotation of the pinion shaft multiplely.

The mechanical brakes of the conventional spur gear type, which prevents the reverse rotation of the endless winder, are momentarily high load due to the wear of the ratchet wheel and lining, the damage and wear of the pole, and the stopper wear that controls the rotation of the gear. Is more likely to develop into a safety accident due to a reverse rotation occurring in an unintended situation that is transmitted to the sieve side (the 'wet mechanical brake for winch machine' of the applicant's application, Korean Utility Model Registration Application No. 20-2002-0013195) And Korean Utility Model Registration Application No. 20-2002-0013197, 'Gondola Power Transmission Device').

In addition, the need for a separate mechanical brake increases the number of parts, making it difficult and complex, and requiring frequent maintenance and safety checks, making it difficult to use, cumbersome, and inconvenient, and complicates power transmission and braking systems. It is composed of a combination of four gears, but the stability is poor, and in many ways disadvantageous.

Patent Document 1. Republic of Korea Utility Model Registration Application No. 20-2002-0013195 Patent Document 2. Republic of Korea Utility Model Registration Application No. 20-2002-0013197

The present invention was devised to solve the problems of the prior art, and an object of the present invention is to provide an worm gear brake device of an endless winder that can integrally control the reverse rotation of the output shaft through the worm gear included in the power transmission system. Its purpose is to.

The present invention provides an worm gear brake device of an endless winder which directly controls the reverse rotation of an output shaft through a simplified worm gear structure by replacing a mechanical brake.

The present invention provides a worm gear brake device of an endless winder with improved stability while reducing the number of mechanical brake components of the braking system that prevents the reverse rotation of the endless winder.

The present invention provides an endless winder worm gear brake device that is easy to use and extends the maintenance and safety inspection cycle of the endless winder.

Worm gear brake device device of the endless winder according to the present invention for achieving this object,

An endless winder treated with a casing, comprising a drive motor, a sheave for compressing a wire rope with the drive motor power to generate a traction force, and a mechanical brake for preventing reverse rotation of the sheave from the motor shaft of the drive motor.

A worm shaft interlocked with the motor shaft and having a worm gear portion at an outer diameter thereof;

A worm wheel engaged with the worm gear part of the worm shaft to rotate;

A power transmission shaft mounted with the worm wheel to transmit rotational power to the sheave;

An output shaft that receives the power of the power transmission shaft and drives the sheave; And

And a power transmission means for mediating the rotation of the power transmission shaft to the output shaft.

In addition, the motor shaft is characterized in that the worm shaft integral type.

In addition, a separate worm shaft is directly aligned side by side in the vertical axis direction to the motor shaft, and the worm wheel with respect to the worm shaft is characterized in that the meshed in the horizontal axis direction.

In addition, the worm shaft and the worm wheel is configured by the combination of the worm gear set, characterized in that to induce one-way rotation of the worm wheel by the rotation of the worm shaft.

In addition, the worm gear portion formed on the worm shaft, and the worm gear lead angle formed on the worm wheel is small, characterized in that configured to block the reverse rotation.

In addition, the mechanical brake is characterized by a worm gear brake device of the endless winder which is a worm shaft and a worm wheel.

In addition, the worm shaft and the worm wheel is characterized in that the worm gear brake device of the endless winder in parallel with the power transmission means for driving the sheave and the mechanical brake.

In addition, the power transmission means,

A pinion gear configured at one end of the power transmission shaft;

It is characterized in that the worm gear brake device of the endless winder including; an output gear that is engaged with the pinion gear and is powered and the output shaft is constructed to transmit the final rotational power to the sheave.

The present invention is simplified by integrating the components of the mechanical brake, the power transmission system and the braking system, and on the other hand, prevents reverse rotation, thereby improving safety in practical applications.

The power transmission and braking functions are integrated in the same system, reducing the number of components compared to the mechanical brakes of other comparable endless winders with separate power transmission and braking.

By reducing the number of parts that make up the endless winder, the stability performance of the endless winder is improved, and the manufacturing cost is reflected in the design which improves the performance in many ways.

The frequency of maintenance and repair of the endless winders is reduced, the life expectancy is increased, and the overall reliability of the endless winders can be manufactured.

1 is an assembled cross-sectional view showing the main part of a conventional endless winder.
2 is a sectional view taken along the line AA in Fig. 1,
3 is a side view of FIG. 1;
4 is an exploded perspective view illustrating an exploded mechanical brake assembly of FIG. 1;
5 is a detailed view of a pole shaft constituting a conventional mechanical brake.
6 is a side view of an endless winder according to the present invention.
7 is a plan view of FIG. 6;
8 is a cross-sectional view taken along the line AA of FIG.
9 is a cross-sectional view taken along line BB of FIG. 6;
10 is a cross-sectional view taken along line CC of FIG. 8;
FIG. 11 is a cross-sectional view taken along the line DD of FIG. 6.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The configuration of a worm gear brake device of an endless winder according to the present invention will be described with reference to FIGS. 6 to 11.

In the worm gear brake device of the endless winder according to the present invention, the worm shaft 150 which receives power from the driving motor 100 and the worm wheel 160 engaged with the worm gear finally transmit power to the output gear 190. It is configured to output power to the sheave 120 through the output shaft 180.

Specifically, as shown in FIGS. 6 to 11, a sheave casing (not shown) to generate a traction force by compressing the wire rope 110 with the drive motor 100 mounted on the casing 140 and the power of the drive motor 100. A mechanical brake that prevents the reverse rotation of the sheave 120 and the motor shaft 130 of the drive motor 100 and the sheave 120 of the driving motor 100 is rotatably installed in the casing 140.

The main part is constituted by a worm shaft 150 which interlocks with the drive shaft 100 side motor shaft 130 and has a worm gear portion 151 on its outer diameter. Here, the worm gear unit 151 is formed in a part of the worm shaft 150. Referring to FIG. 8, there is shown an example in which a worm gear unit 151 is formed near a middle portion between all axes including the motor shaft 130.

In addition, a worm wheel 160 engaged with the worm gear unit 151 of the worm shaft 150 to be rotated is mounted to the power transmission shaft 170. The worm gear 161 formed on the outer diameter of the worm wheel 160 is engaged with the worm gear unit 151 of the worm shaft 150 to receive power from the worm shaft 150 to drive the power transmission shaft 170.

Therefore, the power transmission shaft 170 mounts the worm wheel 160 to transmit the rotational power to the sheave 120.

Then, the output shaft 180 is configured to drive the sheave 120 by receiving and outputting power from the power transmission shaft 170. One end of the output shaft 180 is mounted with a sheave 120 is configured to rotate by receiving a rotational power.

In addition, the present invention includes a power transmission means for mediating the rotation of the power transmission shaft 170 to the output shaft 180, so that the input driving force of the motor shaft 130 is sieve through the output shaft 180. The power transmission system outputted to the 120 is completed, and at the same time, the worm gear itself functions as a mechanism brake including a self-locking function.

Optionally, the motor shaft 130 can be the worm shaft 150 itself. In the drawing, the worm shaft 150 separate from the motor shaft 130 is shown as an example in which the worm shaft 150 is coupled to the shaft coupling structure. Can function.

A preferred example is an example in which the motor shaft 130 and the worm shaft 150 shown in FIG. 8 are mechanically coupled, and the worm shaft 150 is aligned with the motor shaft 130 in parallel with each other in a vertical axis direction. With respect to the worm shaft 150, the worm wheel 160 is engaged with the worm gear set by engaging in the horizontal axis direction.

According to the present invention, the worm shaft 150 and the worm wheel 160 are configured in a worm gear set combination to induce one-way rotation of the worm wheel 160 by the rotation of the worm shaft 150.

In addition, the lead angle of the worm gear unit 151 formed on the worm shaft 150 and the worm gear 161 formed on the worm wheel 160 is reduced to prevent reverse rotation.

In general, when the worm gear lead angle is about 5 ° or less, it is known that reverse rotation does not occur in the worm gear combination. Accordingly, the present invention provides a worm wheel with a design process for reducing the lead angle of the worm gear part 151 and the worm gear 161. And a mechanical brake function to prevent reverse rotation of 160.

Therefore, the function of the mechanical brake of the endless winder according to the present invention is performed through the worm shaft 150 and the worm wheel 160 formed within the range to prevent the reverse rotation of the lead angle formed on the worm gear, The worm shaft 150 and the worm wheel 160 perform power transmission and driving means for driving the sheave 120 and a mechanical brake function.

In addition, the power transmission means is engaged with the pinion gear 171 and the pinion gear 171 formed at one end of the power transmission shaft 170 receives the power and the output shaft 180 is built up to the final rotational power to the sieve 120 It is composed of an output gear 190 for transmitting.

Reference numeral 121 denotes 'roller chain emulation', 122 denotes 'chain', 123 denotes 'link' connecting the roller chain assembly 121 and the chain 122, and 124 links the chain 122 It is a 'spring' that squeezes the sheave 120 around the axis 123. 142 is an 'inlet guide' of the wire rope 110 opened at the sheave casing, and 143 is an 'outlet guide'.

152 is a 'lock nut' installed at the end of the worm shaft 150, and 153 is a 'thrust bearing' that supports the worm shaft vertically on the casing 140.

172 is a 'bearing' for supporting the power transmission shaft 170 in the casing 140, and 181 is a 'bearing' for supporting the output shaft 180 to the sheave casing 141.

The specific action of the worm gear brake device of the endless winder according to the present invention configured as described above is as follows.

When the driving motor 100 is driven, the rotational power of the motor shaft 130 is transmitted to the worm shaft 150. Rotation of the worm shaft 150 that rotates in position is transmitted to the worm wheel 160 engaged with the worm gear unit 151 and the worm gear 161, and the worm wheel 160 rotates the power transmission shaft 170.

The power transmission shaft 170 transmits power to the output gear 190 through the pinion gear 171, and the output shaft 180 is rotated by the rotational force of the output gear 190, and finally, the sieve 120 is rotated. Received is rotated along the direction of rotation of the output shaft 180 to rotate the sheave 120 by this rotational power and the rotational power of the sheave 120 acts as a traction force of the wire rope 110. When the driving motor 100 is rotated in this state, the sheave 120 is rotated in the reverse direction.

If the lead angle of the worm gear part 151 formed on the worm shaft 150 and the worm gear 161 formed on the worm wheel 160 is made small, reverse rotation of the worm wheel 160 under unintended conditions may occur. Is blocked. That is, a phenomenon in which the gondola falls due to a change in the rotation direction of the worm wheel 160 due to the weight load in a situation such as a short or power failure of the driving motor 100 may be prevented.

In order to prepare for this phenomenon, a conventional endless winder constitutes a self-lock device, which is a mechanical brake, and the mechanical brake assembly as shown in FIGS. 1 to 5 spurs complicated power transmission and braking systems. It is composed of a combination of but the stability is inferior in many respects as described above.

In the present invention, the self-lock device is integrated in the power transmission system, that is, the worm wheel 160 has its own lead angle in a situation in which reverse rotation is applied while power is transmitted through the worm shaft 150 and the worm wheel 160. By the reverse rotation is stopped and rotated in the forward and reverse direction only under the condition that the rotational force of the normal drive motor 100 is transmitted, unintended reverse rotation does not occur, which is not dependent on the power of the drive motor 100.

This is a principle that the reverse rotation is generally prevented by reducing the lead angle of the worm gear in a combination of a general worm gear. The worm wheel 160 may not be damaged unless the worm gear formed on the worm shaft 150 or the worm wheel 160 is damaged. Reverse rotation is blocked even in situations.

Accordingly, the components of the mechanical brake which is the power transmission system and the braking system of the present invention are simplified as such. In other words, the power transmission and braking functions are integrated in the same system, which reduces the number of parts compared to the mechanical brakes of other comparable endless winders with separate power transmission and braking.

The fewer parts that make up the endless winder, the better the stability of the endless winder. It also lowers manufacturing costs and at the same time reflects a design that improves performance.

In addition, the frequency of maintenance and repair checks is low, life expectancy is high, and overall, it is advantageous to manufacture high reliability endless winders.

The present invention is not limited to the embodiments described. And can be modified and modified without departing from the gist of the present invention. Modifications and variations are included in the technical scope of the present invention.

100: drive motor
110: wire rope
120: sheave
130: motor shaft
140: casing
150: worm shaft
151: worm gear
160: worm wheel & boss
161: worm gear
170: power transmission shaft
171: pinion gear
180: output shaft
190: input shaft

Claims (8)

A drive motor 100, a sheave 120 for compressing the wire rope 110 by the power of the drive motor 100 to generate a traction force, and the motor shafts 130 to the sheave 120 of the drive motor 100. In an endless winder treated with a casing 140 including a mechanical brake to prevent reverse rotation,
A worm shaft 150 interlocked with the motor shaft 130 and having a worm gear portion 151 on an outer diameter thereof;
A worm wheel 160 meshed with the worm gear unit 151 of the worm shaft 150 to rotate therein;
A power transmission shaft 170 for mounting the worm wheel 160 to transmit rotational power to the sheave 120;
An output shaft 180 which receives the power of the power transmission shaft 170 to drive the sheave 120; And
The power transmission means for mediating the rotation of the power transmission shaft 170 to the output shaft 180; Worm gear brake device of the endless winder further comprises. The method according to claim 1,
Worm gear brake device of the endless winder, characterized in that the motor shaft 130 is integral with the worm shaft (150). The method according to claim 1,
An endless wine, characterized in that the separate worm shaft 150 is directly connected to the motor shaft 130 in parallel to the vertical axis direction, aligned, and the worm wheel 160 is engaged in the horizontal axis direction with respect to the worm shaft 150. More Worm Gear Brake System. The method according to claim 1,
The worm shaft 150 and the worm wheel 160 is composed of a worm gear set combination to induce one-way rotation of the worm wheel 160 by the rotation of the worm shaft 150 worm gear brake device of the endless winder. 5. The method according to any one of claims 1 to 4,
The reverse rotation of the worm wheel 160 is blocked by reducing the lead angle of the worm gear unit 151 formed on the worm shaft 150 and the worm gear 161 formed on the worm wheel 160. Worm gear brakes from endless winders. 5. The method according to any one of claims 1 to 4,
The mechanical brake is a worm shaft (150) and worm wheel (160) worm gear brake device of the endless winder. 5. The method according to any one of claims 1 to 4,
The worm shaft brake device of the endless winder in which the worm shaft 150 and the worm wheel (160) drive power transmission and mechanical brake to drive the sheave (120). 5. The method according to any one of claims 1 to 4,
The power transmission means,
A pinion gear 171 configured at one end of the power transmission shaft 170;
And an output gear (190) configured to engage with the pinion gear (171) to receive power and to output an output shaft (180) to transmit the final rotational power to the sheave (120).

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