CN216122089U

CN216122089U - Lifting motor

Info

Publication number: CN216122089U
Application number: CN202122338755.0U
Authority: CN
Inventors: 黄正滨
Original assignee: Jiangmen Runsheng Electromechanical Co ltd
Current assignee: Jiangmen Runsheng Electromechanical Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-22
Anticipated expiration: 2031-09-24

Abstract

The utility model belongs to the field of motors, and discloses a hoisting lifting motor which comprises a stator, a rotor, a motor shaft connected with the rotor, and a worm gear, wherein one end of the motor shaft is a power output end, the other end of the motor shaft is a worm, the worm gear and the worm form a worm gear self-locking mechanism, and the lead angle of the worm is less than or equal to 4.5 degrees. The end part of the motor shaft of the hoisting lifting motor is provided with the worm and gear structure with the self-locking function, the hoisting lifting motor can play the roles of reducing the speed, reducing the torque output of the motor when a heavy object is placed, and locking the motor in a power failure state, and is simple in structure and reliable in operation.

Description

Lifting motor

Technical Field

The utility model belongs to the field of motors, and particularly relates to a lifting motor.

Background

The hoisting and lowering motor is mainly used for lifting and lowering heavy objects, and generally has no problem in the process of lifting the heavy objects. Different manufacturers have different motor control strategies in the process of putting down the heavy object.

The first method comprises the following steps: the torque output of the motor is realized by controlling the current and voltage value of the motor, and when the force output by the motor is slightly smaller than the gravity of the heavy object, the heavy object can slowly descend.

The second method comprises the following steps: through setting up brake mechanism on the motor shaft, brake through brake mechanism, this kind of scheme is effective but brake mechanism either more complicated, or need adopt the singlechip to control.

Therefore, the technical problem that the present scheme was solved is: how to make the jack-up elevator motor can steady transfer when transferring the heavy object, simplify equipment mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a hoisting lifting motor, wherein a worm and gear structure with a self-locking function is arranged at the end part of a motor shaft of the hoisting lifting motor, the worm and gear structure can play a role in reducing speed, reducing torque output of the motor when a heavy object is placed down and locking the motor in a power failure state, the hoisting lifting motor is simple in structure and reliable in operation, and the rotation speed of the motor is completely controlled in the process of placing the heavy object down and is not influenced by the self weight of an external heavy object.

According to a first aspect of the utility model, the hoisting lifting motor comprises a stator, a rotor, a motor shaft connected with the rotor, and a worm gear, wherein one end of the motor shaft is a power output end, the other end of the motor shaft is a worm, the worm gear and the worm form a worm and gear self-locking mechanism, and the lead angle of the worm is less than or equal to 4.5 degrees.

In the hoisting lifting motor, the power output end is also connected with a planetary reducer.

In the above hoisting and lowering motor, the motor is a brushless motor.

In the hoisting lifting motor, the hoisting lifting motor further comprises a shell, and the stator, the rotor, the motor shaft and the worm and gear self-locking mechanism are all arranged in the shell.

In the hoisting lifting motor, a worm wheel fixing seat is arranged in the shell, and a worm wheel bearing is fixed in the worm wheel fixing seat.

In the hoisting lifting motor, the worm wheel fixing seat is of an annular structure and is locked on the shell through bolts.

In the hoisting lifting motor, a plurality of heat dissipation fins are arranged on the outer side of the shell.

One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:

the worm and gear structure with the self-locking function is arranged at the end part of the motor shaft of the hoisting lifting motor, can play roles in reducing speed, reducing torque output of the motor when a heavy object is placed down and locking the motor in a power failure state, and is simple in structure and reliable in operation.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a front view of embodiment 1 of the present invention;

FIG. 2 is a left side view of embodiment 1 of the present invention;

FIG. 3 is a sectional view A-A of FIG. 2 of embodiment 1 of the present invention;

fig. 4 is a perspective view of a worm wheel holder according to embodiment 1 of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other elements or indirectly connected through one or more other elements or in an interactive relationship between two elements.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.

Referring to fig. 1 to 4, in an embodiment of the present invention, a hoisting and lifting motor includes a stator 1, a rotor 2, a motor shaft 3 connected to the rotor 2, and a worm wheel 10, wherein one end of the motor shaft 3 is a power output end 5, the other end of the motor shaft 3 is a worm 4, the worm wheel 10 and the worm 4 form a worm and gear self-locking mechanism, and a lead angle of the worm 4 is less than or equal to 4.5 °.

In the present embodiment, the lead angle of the worm 4 may be selected to be 4.5 °, 4 °, 3 °, 2 °, etc.;

the reverse torque is added on the worm gear self-locking mechanism to generate a reverse efficiency eta which is 2-1/eta and is obviously smaller than the forward efficiency eta, and if the forward efficiency eta is less than or equal to 0.5, the worm gear speed reducer can self-lock. Only a small amount of worm gear speed reducers with large speed ratios are statically self-locked.

When the worm helix angle is small in a worm-gear fly-rod speed reducer of a machine, such as a single-head worm, when the worm stops rotating, the worm gear gives a reverse sliding force to the worm, so that the worm cannot rotate reversely, and the phenomenon is called worm self-locking.

The bevel angle is called a friction angle, and the tangent of the friction angle is the friction coefficient f, and tan phi is f. The smaller the friction angle, the stronger the self-locking capability. The single-head snail phase has small helical angle and small friction angle, so the self-locking device has stronger self-locking capability.

In the process of lifting heavy objects, the worm wheel 10 rotates along with the worm 4, and the scene is not consistent with the scene lifted by the motor of the scene.

In the process of putting down the heavy object, the motor drives the worm 4 to rotate reversely, and in the process of rotating reversely, as the lead angle of the worm 4 is less than or equal to 4.5 degrees, the meshing teeth between the worm wheel 10 and the worm 4 have larger friction force, so that the motor can put down the heavy object only by outputting smaller torque force.

If the motor end point is reached, the motor can not drive the motor shaft 3 to rotate, the worm wheel 10 and the worm 4 are in a locking state, and the safety of the motor is obviously improved.

Preferably, the power output end 5 is also connected with a planetary reducer 6. More generally, a reduction box is connected to the power output end 5 of the motor shaft 3 for speed reduction.

In this embodiment, the motor is a brushless motor or a brush motor.

As a further optimization of the embodiment, the motor further comprises a housing 7, the stator 1, the rotor 2, the motor shaft 3, and the worm and gear self-locking mechanism are all disposed in the housing 7, a worm and gear fixing seat 8 is disposed in the housing 7, a worm and gear bearing 9 is fixed in the worm and gear fixing seat, a shaft of the worm and gear 10 is connected to the worm and gear bearing 9, the worm and gear fixing seat 8 is an annular structure, and the worm and gear fixing seat is locked to the housing 7 through a bolt. The annular hollow worm wheel fixing seat 8 has good heat dissipation effect and light weight.

In order to further improve the heat dissipation effect, a plurality of heat dissipation fins are arranged on the outer side of the shell 7.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a jack-up elevator motor, includes stator, rotor, the motor shaft of being connected with the rotor, its characterized in that still includes the worm wheel, the one end of motor shaft is power take off end, the other end of motor shaft is the worm, worm wheel and worm constitute worm gear self-locking mechanism, the lead angle of worm is less than or equal to 4.5.

2. The hoist lift motor of claim 1, wherein the power take-off is further coupled to a planetary reduction gear.

3. The hoist lift motor of claim 1, wherein the motor is a brushless motor.

4. The hoisting lifting motor of any one of claims 1 to 3, further comprising a housing, wherein the stator, the rotor, the motor shaft, and the worm and gear self-locking mechanism are all disposed within the housing.

5. The hoist lift motor of claim 4, wherein the housing includes a worm gear mounting seat with a worm gear bearing secured therein.

6. The hoist lift motor of claim 5, wherein the worm gear mounting block is a ring-shaped structure that is bolted to the housing.

7. The hoist lift motor of claim 4, wherein the housing includes a plurality of heat dissipating fins on an outer side thereof.