CN210595011U

CN210595011U - Electric winding drum for crane

Info

Publication number: CN210595011U
Application number: CN201920774901.4U
Authority: CN
Inventors: 苏希俭
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-05-22
Anticipated expiration: 2029-05-27

Abstract

The utility model provides an electric reel for hoist, include: the winding drum comprises a drum body, a plurality of rare earth permanent magnets, a drum shaft, a fixing frame, an iron core, a winding, a Hall element, an end cover, a high-strength bolt pair, an O-shaped sealing ring, a lip-shaped sealing ring, a rolling bearing and a radial reinforcing rib on the outer circle surface of the drum body; a plurality of rare earth permanent magnets are fixed on the inner circle surface of the winding drum body to form a rotor of the motor; the fixed frame, the iron core and the winding are fixed on a drum shaft to form a stator of the motor; the rotor and the stator are connected through a high-strength bolt pair, an end cover and a rolling bearing; the Hall element is used for detecting the rotating speed of the winding drum; the O-shaped sealing ring is used for preventing liquid from entering the rolling bearing; the lip-shaped sealing ring is used for preventing lubricating grease in the rolling bearing from entering the inner cavity of the winding drum body and the outer part of the winding drum body; when the power supply is switched on, the drum body rotates around the drum shaft, and the steel wire rope winds in and out of the drum to drive the working load to move up and down. The surface of the outer circle of the winding drum adopts a duplex broken line rope groove type.

Description

Electric winding drum for crane

Technical Field

The utility model relates to an electric reel for hoist

Background

Currently, the structure that the reel on the hoist adopted is: the steel plates are welded into a cylinder, one end of the cylinder is provided with an end plate, and the end plate is provided with a short shaft. The drum itself has no power. The manner of driving the drum is: motor → coupling → speed reducer → drum coupling → drum. The whole system has low efficiency of converting electric energy into mechanical energy, and has large noise, heavy weight and large occupied space.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an electric reel for hoist, include:

the drum body is made of steel materials, and the rope groove type of the steel wire rope wound on the surface of the excircle is a duplex broken line rope groove;

the rare earth permanent magnets are fixed on the inner circular surface of the winding drum body;

the winding drum shaft is made of steel materials and arranged in the winding drum body;

a fixing bracket fixed to the spool shaft;

the iron core is made of silicon steel materials and is fixed on the fixing frame;

a winding mechanically coupled to the core;

the Hall element is used for detecting the rotating speed of the winding drum and is mechanically connected to the iron core;

an end cap of steel material mechanically coupled to the spool body;

the high-strength bolt pair is used for connecting the winding drum body and the end cover;

an O-ring seal provided to the end cap;

a lip-shaped seal ring provided to the end cap;

a rolling bearing mechanically coupled to the spool shaft;

the radial reinforcing rib is made of steel materials and welded on the outer circle surface of the winding drum body;

the utility model discloses an electric reel for hoist can be regarded as an external rotor tombarthite permanent-magnet machine's the deformation body: the winding drum body and the plurality of rare earth permanent magnets form an outer rotor of the motor, and the winding drum shaft, the fixing frame, the iron core and the winding form a stator of the motor. And the rotor and the stator are connected through the high-strength bolt pair, the end cover and the rolling bearing. After the power supply is switched on, the winding drum body rotates around the winding drum shaft, the steel wire rope winds in and out of the winding drum, and the working load is driven to move up and down.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:

fig. 1 shows an embodiment of the overall structure of the electric reel for crane of the present invention.

Fig. 2 shows a cross-sectional view of the electric reel for crane of the present invention.

Detailed Description

Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected at the discretion of the applicant, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is not required that the present invention be understood, not only by the actual terms used but also by the meaning of each term lying within.

To avoid obscuring or obscuring the focus of the present invention, some of the specific details will be omitted from the description.

Fig. 1 shows the overall structure of a crane electric reel 100 according to the present invention. Fig. 2 shows a cross-sectional view of the electric reel 100 for a crane according to the present invention.

Referring to fig. 2, the electric reel 100 for a crane mainly includes: the permanent magnet winding device comprises a winding drum body 101, a plurality of rare earth permanent magnets 102, a winding drum shaft 103, a fixing frame 104, an iron core 105, a winding 106, a Hall element 107, an end cover 108, a high-strength bolt pair 109, an O-shaped sealing ring 110, a lip-shaped sealing ring 111, a rolling bearing 112 and a radial reinforcing rib 113.

In the preferred embodiment, the outer circumferential surface of the winding drum body 101 uses double-fold line grooves, i.e. left-hand and right-hand symmetrical fold line grooves. The horizontal component force generated by lifting the steel wire rope can be offset by using the left-handed and right-handed symmetrical rope grooves; the winding drum can be wound in multiple layers by using the broken line rope grooves, and the length of the winding drum can be reduced by using the same lifting height. After the length of the winding drum is reduced, the bending deformation generated on the middle part of the winding drum is small due to the same steel wire rope tension, and the air gap between the stator and the rotor can be designed to be small, so that the improvement of the motor power is facilitated.

In the preferred embodiment, the multiple rare earth permanent magnets 102 are used to form multiple magnetic poles, so that the utility model electric reel 100 for crane has the characteristics of low rotation speed and large torque, thereby meeting the requirement of crane on the performance of hoisting mechanism;

in the preferred embodiment, the fractional slot winding core 105 is used, that is, the ratio of each pole of the stator to each slot number is a true fraction, so that the number of tooth slots of the core 105 punching sheet in the electric winding drum 100 for the crane is reduced, and the torque pulsation caused by the tooth slot effect is reduced; the utility model has the advantages that the electric reel 100 for the crane has compact structure and improved performance as a whole;

in the preferred embodiment, a plurality of high strength bolt pairs 109 are disposed on the circumference of the side plate of the spool body 101 to tightly couple the end cap 108 to the spool body 101. The working load can rock in the lifting process, and a steel wire rope connected with the working load can generate a lateral component force on the end cover. To ensure that the end cap 108 is tightly attached to the spool body 101, a high strength bolt pair 109 is required to be inserted through the end cap and the spool body to connect the two. Further, considering the installation process, the end cap is made up of two separate parts that are also connected through a plurality of high strength bolt pairs 109. Furthermore, two side surfaces of the maximum excircle part of the end cover can be used as brake discs matched with the brake.

In the preferred embodiment, an O-ring 110 is used at the boundary between the two parts of the end cap 108 to prevent grease in the rolling bearing 112 from flowing out of the spool body 101 or prevent external liquid from flowing into the rolling bearing 112.

In the preferred embodiment, two lip seals 111 are provided on the rolling bearing 112 to prevent grease inside the rolling bearing 112 from entering the inside of the spool body 101 and the outside of the spool body 101.

In the preferred embodiment, a plurality of radial ribs 113 are additionally arranged on the outer circumferential surface of the reel body 101 to increase the radial rigidity of the reel body 101. Similarly, the bending deformation generated in the middle of the winding drum is small due to the tension of the steel wire rope, so that the air gap between the stator and the rotor can be designed to be smaller, and the improvement of the motor power is facilitated. Further, the reinforcing rib 113 also serves as a stopper for the wire rope, inducing the wire rope to change direction when the next layer is wound.

As will be appreciated by those skilled in the art: the principle of the present invention in the above-mentioned embodiments can be applied to any crane drum.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An electric reel for a crane, comprising: the winding drum comprises a drum body, a plurality of rare earth permanent magnets, a drum shaft, a fixing frame, a fractional slot winding iron core, a winding, a Hall element, an end cover, a high-strength bolt pair penetrating through the drum body, an O-shaped sealing ring, a lip-shaped sealing ring, a rolling bearing and a radial reinforcing rib on the outer circle surface of the drum body; a plurality of rare earth permanent magnets are fixed on the inner circle surface of the winding drum body to form a rotor of the motor; the fixing frame, the fractional slot winding iron core and the winding are fixed on a winding drum shaft to form a stator of the motor; the rotor and the stator are connected through a high-strength bolt pair, an end cover and a rolling bearing; the Hall element is used for detecting the rotating speed of the winding drum; the O-shaped sealing ring is used for preventing liquid from entering the rolling bearing; the lip-shaped sealing ring is used for preventing lubricating grease in the rolling bearing from entering the inner cavity of the winding drum body and the outer part of the winding drum body; when the power supply is switched on, the drum body rotates around the drum shaft, and the steel wire rope winds in and out of the drum to drive the working load to move up and down.

2. The electric hoist drum as claimed in claim 1, wherein the drum body is in the form of a double-broken-line rope groove, and the outer circumferential surface of the drum body is provided with radial ribs.

3. The electric hoist drum as claimed in claim 1, wherein the plurality of rare earth permanent magnets constitute a plurality of poles of the motor.

4. The electric hoist drum as claimed in claim 1, wherein the high-strength bolt pairs penetrating through the drum body are arranged in plural numbers on the circumference of the drum body to tightly connect the end caps and the drum body; a plurality of the end caps are arranged on the circumference of the end caps, and the two parts of the end caps are tightly connected together.

5. An electric hoist drum as claimed in claim 1, wherein both side surfaces of the outermost circular portion of the end cover simultaneously serve as a brake disk for brake pair.