CN210655715U

CN210655715U - Rope winding mechanism

Info

Publication number: CN210655715U
Application number: CN201921187739.2U
Authority: CN
Inventors: 胡晓东; 陈景亮; 林柱楷
Original assignee: Guangzhou Sanxin Mechanical And Electrical Co ltd
Current assignee: Guangzhou Sanxin Mechanical And Electrical Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-06-02
Anticipated expiration: 2029-07-25

Abstract

The utility model provides a rope coiling mechanism, which comprises a motor, a transmission device driven by the motor and a self-locking device, wherein the transmission device comprises a shell, a worm and two transmission wheels, two round pipes are fixed in the shell, the two transmission wheels are respectively and rotatably arranged on the two round pipes, any transmission wheel comprises a turbine and a coiling wheel linked with the turbine, the first end of the worm is connected with the motor, the second end of the worm is connected with the self-locking device, and the middle part of the worm is respectively in transmission connection with the two turbines; still be equipped with cylindrical recess on the shell, self-lock device includes one-way bearing and rubber sleeve, and one-way bearing is located cylindrical recess and its inner circle is fixed on the second of worm and is served, and the rubber sleeve sets up between the outer lane of one-way bearing and the inside wall of cylindrical recess. The utility model discloses low energy consumption, small, improved transmission efficiency and increased the auto-lock ability.

Description

Rope winding mechanism

Technical Field

The utility model belongs to the automation field especially relates to a rope winding mechanism.

Background

The winding mechanism on the market at present is basically divided into two types: the double-winding type is basically realized by matching a single worm with a double-turbine structure or externally connecting the double-winding wheels, a common high-power motor is directly matched with a turbine worm speed reducer, and the mechanism efficiency is low; the single-winding type is mainly implemented by a tubular motor and a planetary structure and a self-locking controller, has smaller torsion and insufficient strength, and is mainly used for occasions with lower torsion requirements, such as intelligent curtains and the like. The two winding mechanisms ensure that the winding wheel is not reversely pushed by means of the self-locking capability of the worm, namely, the torque force cannot be applied from the output end to enable the motor to rotate, the smaller the lead angle of the worm and gear structure is, the better the lead angle is, but the self-locking capability of the corresponding worm and gear structure is reduced, and the self-locking capability of the worm and gear structure is ensured to reach a certain degree, the worm efficiency can only be reduced, so that the transmission efficiency of the whole machine is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rope winding mechanism, low energy consumption, small, improved transmission efficiency and increased the auto-lock ability.

The utility model discloses a realize through following technical scheme:

a rope winding mechanism comprises a motor, a transmission device and a self-locking device, wherein the transmission device is driven by the motor and comprises a shell, a worm and two transmission wheels;

still be equipped with cylindrical recess on the shell, self-lock device includes one-way bearing and rubber sleeve, and one-way bearing is located cylindrical recess and its inner circle is fixed on the second of worm and is served, and the rubber sleeve sets up between the outer lane of one-way bearing and the inside wall of cylindrical recess.

Compared with the prior art, the beneficial effects of the utility model are that: the energy consumption is low, the volume is small, only allow the worm to normally rotate towards a direction through setting up the one-way bearing in the self-locking device, when the worm needs the opposite direction rotation, the worm needs to drive the one-way bearing and at the rubber sleeve internal rotation, increase the resistance of worm reversal with the frictional force between rubber sleeve inside wall and the one-way bearing outer lane, the self-locking ability except that worm self-locking ability is provided promptly, consequently, can reduce the requirement to the self-locking ability of worm self, thereby improve the transmission efficiency of complete machine, can increase the self-locking ability when realizing improving complete machine transmission efficiency. The utility model discloses the range of application is wide, can be used to all kinds of equipment that use the rope displacement.

Furthermore, a plurality of bulges are arranged on the inner side wall of the cylindrical groove. The protrusion can increase the friction between the rubber sleeve and the inner side wall of the cylindrical groove, and the rubber sleeve is prevented from slipping.

Furthermore, the self-locking device also comprises a fastening screw and a nut, the fastening screw is installed in the cylindrical groove through threaded connection, the first end of the fastening screw is in contact with the second end of the worm, and the nut is located on the outer side of the shell and is arranged on the fastening screw. The fastening screw is used for adjusting the axial pretightening force of the motor, and the nut prevents the fastening screw from reversing or falling off.

Furthermore, the second end of the worm is provided with a top bead, and the top bead is tangent to the end face of the first end of the fastening screw. The top bead may reduce friction between the worm and the binding screw.

Further, the shell comprises a shell body, an upper plate and a lower plate, wherein the upper plate is fixed at one end of the shell body and provided with two first bosses, the lower plate is fixed at the other end of the shell body and provided with two second bosses corresponding to the two first bosses, one ends of the two round pipes are respectively fixed on the two first bosses, and the other ends of the two round pipes are respectively fixed on the two corresponding second bosses.

Further, one end of the shell, which is fixed on the upper plate, is provided with a lip surrounding the side surface of the upper plate. The lip surrounds the sides of the upper plate to prevent the sides of the upper plate from rusting.

Furthermore, the upper plate is provided with a through hole. The through-hole can be used for installing induction system, in order to realize the utility model discloses an intelligent control function.

Furthermore, four mounting ears are arranged on the lower plate, and mounting holes are arranged on the mounting ears.

Further, the shell and the motor are arranged integrally, a motor end cover is arranged on one side, away from the self-locking device, of the shell, and the motor is fixed on the motor end cover.

Furthermore, a conical groove is formed in the middle of the motor end cover, a ball bearing, a felt ring and a bearing retainer ring are arranged in the conical groove, the bearing retainer ring is arranged at one end, far away from the shell, of the ball bearing and is arranged between the conical groove and the motor, and the felt ring is arranged between the ball bearing and the bearing retainer ring. The bearing retainer ring is used for limiting the freedom degree of the ball bearing in the conical groove, and the felt ring prevents grease in the shell from entering the interior of the motor.

Drawings

Fig. 1 is a schematic structural view of a rope winding mechanism of the present invention;

fig. 2 is an exploded view of the rope winding mechanism of the present invention;

fig. 3 is a cross-sectional view of the rope winding mechanism of the present invention;

fig. 4 is a schematic structural view of a driving wheel in the rope winding mechanism of the present invention.

In the figure, 1-motor, 2-transmission, 21-housing, 211-housing, 212-upper plate, 2121-lip, 2122-through hole, 2123-sensor box, 213-lower plate, 2131-second boss, 2132-mounting ear, 2133-mounting hole, 22-worm, 221-top bead, 23-transmission wheel, 231-turbine, 232-winding wheel, 2321-T type groove, 24-round tube, 25-motor end cap, 251-ball bearing, 252-felt ring, 253-bearing retainer ring, 3-self-locking device, 31-one-way bearing, 32-rubber sleeve, 33-fastening screw and 34-nut.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1, fig. 1 is a schematic structural view of a rope winding mechanism according to the present invention. A rope coiling mechanism comprises a motor 1, a transmission device 2 driven by the motor 1 and a self-locking device 3. The both sides of transmission 2 are installed respectively to motor 1 and self-lock device 3, increase through setting up self-lock device 3 the utility model discloses a self-locking ability.

Referring to fig. 2 and 4 in combination, fig. 2 is an exploded view of the rope winding mechanism of the present invention, and fig. 4 is a schematic structural view of the driving wheel of the rope winding mechanism of the present invention. The transmission device 2 comprises a shell 21, a worm 22 and two transmission wheels 23, wherein the shell 21 is internally fixed with two circular tubes 24, the two transmission wheels 23 are respectively and rotatably arranged on the two circular tubes 24, any transmission wheel 23 comprises a turbine 231 and a winding wheel 232 linked with the turbine 231, the first end of the worm 22 is connected with the motor 1, the second end of the worm is connected with the self-locking device 3, and the middle parts of the worm 22 are respectively in transmission connection with the two turbines 231; the worm 22 is driven to rotate by the motor 1, and the worm 22 drives the two worm wheels 231 to rotate.

The outer shell 21 includes a shell 211, an upper plate 212 and a lower plate 213, the upper plate 212 is fixed at one end of the shell 211 and is provided with two first bosses, the lower plate 213 is fixed at the other end of the shell 211 and is provided with two second bosses 2131 corresponding to the two first bosses, one ends of the two circular tubes 24 are respectively fixed on the two first bosses, and the other ends are respectively fixed on the two corresponding second bosses 2131. Specifically, the two first bosses and the two second bosses 2131 are provided with clamping grooves, and two ends of the two circular tubes 24 are respectively disposed in the corresponding clamping grooves. The housing 211 and the transmission wheel 23 are made of plastic, and the upper plate 212 and the lower plate 213 are made of sheet metal. The end of the housing 211 to which the upper plate 212 is secured is provided with a lip 2121 that surrounds the side of the upper plate 212. The lip 2121 surrounds the sides of the upper plate 212 and prevents rusting of the sides of the upper plate 212. The upper plate 212 is formed with a through hole 2122. Through-hole 2122 can be used for installing induction system, in order to realize the utility model discloses corresponding intelligent control function. Specifically, the through hole 2122 may mount an inductor case 2123 for placing an inductor. The lower plate 213 is provided with four mounting ears 2132, and the mounting ears 2132 are provided with mounting holes 2133. The utility model discloses on all kinds of equipment that use the rope displacement were installed to installation ear 2132 on the accessible hypoplastron 213, if the clothes hanger that dries in the air, the lift lampblack absorber, the shutter door, lift wardrobe etc..

Referring to fig. 3, fig. 3 is a cross-sectional view of the rope winding mechanism of the present invention. The shell 21 and the motor 1 are arranged integrally, a motor end cover 25 is arranged on one side, away from the self-locking device 3, of the shell 21, and the motor 1 is fixed on the motor end cover 25. The middle part of the motor end cover 25 is provided with a conical groove, a ball bearing 251, a felt ring 252 and a bearing retainer ring 253 are arranged in the conical groove, the ball bearing 251 is placed in the conical groove, the bearing retainer ring 253 is arranged at one end of the ball bearing 251 far away from the shell 21 and is arranged between the conical groove and the motor 1, and the felt ring 252 is arranged between the ball bearing 251 and the bearing retainer ring 253. The bearing retainer 253 serves to limit the freedom of the ball bearing 251 in the conical recess, and the felt ring 252 prevents grease in the housing 21 from entering the interior of the motor 1. The worm 22 passes through the ball bearing 251, the felt ring 252 and the bearing retainer ring 253 and then is connected with the motor 1.

The worm wheel 231 and the winding wheel 232 are integrally arranged, the winding wheel 232 is cylindrical, a spiral groove for accommodating the rope to be wound is formed in the outer surface of the winding wheel, and a T-shaped groove 2321 is formed in one end, close to the worm wheel 231, of the winding wheel. The T-shaped groove 2321 is used to receive the end of the rope and to clamp it, and the motor 1 is started to wind the rope around the reel 232.

The housing 21 is also provided with a cylindrical recess for mounting the self-locking device 3.

The self-locking device 3 comprises a one-way bearing 31 and a rubber sleeve 32, the one-way bearing 31 is positioned in the cylindrical groove, the inner ring of the one-way bearing 31 is fixed on the second end of the worm 22, and the rubber sleeve 32 is arranged between the outer ring of the one-way bearing 31 and the inner side wall of the cylindrical groove. The one-way bearing 31 only allows the worm 22 to normally rotate in one direction, when the worm 22 rotates in the positive direction (the positive direction is the direction in which the one-way bearing 31 allows the inner ring of the worm to rotate in the outer ring of the worm), the worm 22 only needs to drive the inner ring of the one-way bearing 31 to rotate, and the outer ring of the one-way bearing 31 does not move; when the worm 22 needs to rotate reversely, the whole one-way bearing 31 needs to be driven to rotate, that is, the outer ring of the one-way bearing 31 needs to be driven to rotate in the rubber sleeve 32. The friction force between the outer ring of the one-way bearing 31 and the inner side wall of the rubber sleeve 32 can increase the resistance of the worm 22 to reverse rotation, which is equivalent to increase the self-locking capacity of the worm 22. For example, a heavy object is hung on the rope, the worm 22 can be rotated reversely by the tension of the rope on the winding wheel 232, the resistance of the worm 22 to reverse rotation is increased by the friction force between the outer ring of the one-way bearing 31 and the inner side wall of the rubber sleeve 32, namely, the self-locking capability of the worm 22 is increased, the worm 22 is prevented from reversing, and the heavy object hung on the rope cannot fall down. The size, thickness etc. through adjustment rubber sleeve 32 can realize increasing the utility model discloses a self-locking ability. Preferably, the inner side wall of the cylindrical groove is provided with a plurality of protrusions (not shown). When the rubber sleeve 32 is sleeved on the outer ring of the one-way bearing 31, the protrusion can be embedded into the outer surface of the rubber sleeve 32 due to elasticity of the rubber sleeve, so that the friction force between the rubber sleeve 32 and the inner side wall of the cylindrical groove is further increased, and the rubber sleeve 32 is prevented from slipping.

The self-locking device 3 further comprises a fastening screw 33 and a nut 34, the fastening screw 33 is mounted in the cylindrical recess by means of a threaded connection and has one end in contact with the second end of the worm 22, and the nut 34 is located outside the housing 21 and is arranged on the fastening screw 33. The fastening screw 33 is in threaded connection with the cylindrical groove, and can be adjusted and installed in the cylindrical groove, so that the axial clearance between the fastening screw 33 and the worm 22 is adjusted, the axial pretightening force of the motor 1 is adjusted, and the nut 34 prevents the fastening screw 33 from reversing or falling off. Preferably, the second end of the worm 22 is provided with a top bead 221, the top bead 221 being tangential to one end of the fastening screw 33. The top bead may reduce friction between the worm and the binding screw.

Compared with the prior art, the beneficial effects of the utility model are that: the energy consumption is low, the volume is small, only the worm 22 is allowed to normally rotate towards one direction through the one-way bearing 31 in the self-locking device 3, when the worm 22 needs to rotate in the opposite direction, the worm 22 needs to drive the one-way bearing 31 to rotate in the rubber sleeve 32, the resistance of the reverse rotation of the worm 22 is increased by the friction force between the inner side wall of the rubber sleeve 32 and the outer ring of the one-way bearing 31, namely, the self-locking capability except the self-locking capability of the worm 22 is provided, so that the requirement on the self-locking capability of the worm 22 can be reduced, the transmission efficiency of the whole machine is improved, and the self-locking capability can be increased while the. The utility model discloses the range of application is wide, can be used to all kinds of equipment that use the rope displacement. For example, the multifunctional clothes rack can be used for clothes drying racks, lifting range hoods, sliding doors, lifting wardrobes and the like.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. A rope winding mechanism is characterized by comprising a motor, a transmission device and a self-locking device, wherein the transmission device is driven by the motor and comprises a shell, a worm and two transmission wheels, two round pipes are fixed in the shell, the two transmission wheels are respectively and rotatably arranged on the two round pipes, any one of the transmission wheels comprises a turbine and a winding wheel linked with the turbine, the first end of the worm is connected with the motor, the second end of the worm is connected with the self-locking device, and the middle parts of the worm are respectively in transmission connection with the two turbines;

still be equipped with cylindrical recess on the shell, self-lock device includes one-way bearing and rubber sleeve, one-way bearing is located in the cylindrical recess and its inner circle is fixed on the second of worm is served, the rubber sleeve sets up one-way bearing's outer lane with between the inside wall of cylindrical recess.

2. A rope reeling mechanism according to claim 1, wherein the cylindrical recess is provided with a plurality of projections on an inner side wall thereof.

3. A rope reeling mechanism according to claim 1, wherein the self-locking means further comprises a fastening screw mounted in the cylindrical recess by a threaded connection and having a first end in contact with the second end of the worm, and a nut located outside the housing and disposed on the fastening screw.

4. A cord reeling mechanism according to claim 3, wherein the second end of the worm is provided with a top bead which is tangential to the end face of the first end of the tightening screw.

5. A rope winding mechanism according to claim 1, wherein said housing includes a housing, an upper plate fixed to one end of the housing and provided with two first bosses, and a lower plate fixed to the other end of the housing and provided with two second bosses corresponding to said two first bosses, one ends of said two round tubes being fixed to said two first bosses, respectively, and the other ends of said two round tubes being fixed to said two second bosses, respectively.

6. A cord reeling mechanism according to claim 5, wherein the end of the housing to which the upper plate is secured is provided with a lip surrounding the side of the upper plate.

7. A rope reel mechanism according to claim 5, wherein the upper plate is provided with a through hole.

8. A cord reeling mechanism according to claim 5, wherein the lower plate is provided with four mounting lugs, and the mounting lugs are provided with mounting holes.

9. A rope reel mechanism as claimed in claim 1, wherein the housing is integral with the motor, and the side of the housing remote from the self-locking means is a motor end cap to which the motor is secured.

10. A rope reel mechanism as claimed in claim 9, wherein a conical recess is provided in the middle of the motor end cap, a ball bearing, a felt ring and a retainer ring are provided in the conical recess, the retainer ring is provided at an end of the ball bearing remote from the housing and between the conical recess and the motor, and the felt ring is provided between the ball bearing and the retainer ring.