CN214125056U

CN214125056U - Motor speed reducer with overload protection

Info

Publication number: CN214125056U
Application number: CN202021562609.5U
Authority: CN
Inventors: 张�浩; 张秋年; 张劭骢; 张劭然
Original assignee: Taixing Nianhua Machinery Manufacturing Co ltd
Current assignee: Taixing Nianhua Machinery Manufacturing Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-09-03
Anticipated expiration: 2030-07-31

Abstract

The utility model relates to a decelerator technical field specifically is a motor speed reducer with overload protection, including motor and speed reducer, motor fixed connection is in the upper end of speed reducer, the speed reducer includes speed reducer housing and transmission shaft, the transmission shaft is through the output shaft who takes drive mechanism and motor, the one end of transmission shaft extends to the speed reducer housing inside and fixedly connected with friction nipple, the outside cover of friction nipple is equipped with the friction outer joint, the outer peripheral wall of friction nipple and the interior peripheral wall surface of friction outer joint are equidistant fixedly connected with many friction strips, the friction strips interval staggered distribution of friction nipple and friction outer joint, the one end fixed connection of friction outer joint has the speed reducer output shaft, the speed reducer output shaft rotates and connects in the speed reducer housing, be connected with alarm assembly on the speed reducer output shaft; through setting up friction inner joint and friction outer joint, can avoid the motor output shaft to continue to drive the condition emergence that the rotation of speed reducer output shaft leads to motor burnout or equipment to damage.

Description

Motor speed reducer with overload protection

Technical Field

The utility model relates to a decelerator technical field specifically is a motor reducer with overload protection.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law. The motor is represented by a letter M in a circuit, and the motor mainly plays a role in generating driving torque and is used as a power source of electric appliances or various machines.

When the output shaft of the motor is connected with machinery through the speed reducer, when the output shaft of the speed reducer is overloaded and fails or the output shaft of the speed reducer cannot rotate due to mechanical failure, the motor and the output shaft still run, and the motor is easily overloaded to burn out or damage equipment. And when the output shaft of the speed reducer stops rotating, workers cannot be reminded in time.

Disclosure of Invention

An object of the utility model is to provide a motor reducer with overload protection to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a motor reducer with overload protection, includes motor and speed reducer, motor fixed connection is in the upper end of speed reducer, the speed reducer includes speed reducer housing and transmission shaft, the transmission shaft is through the output shaft who takes drive mechanism and motor, the one end of transmission shaft extends to inside and fixedly connected with friction nipple of speed reducer housing, the outside cover of friction nipple is equipped with the friction outer joint, the equal equidistance fixedly connected with many friction strips of the periphery wall of friction nipple and the internal perisporium surface of friction outer joint, the friction strip interval staggered distribution of friction nipple and friction outer joint, the one end fixedly connected with speed reducer output shaft of friction outer joint, speed reducer output shaft rotates to be connected in speed reducer housing, be connected with alarm component on the speed reducer output shaft.

Preferably, the outer surfaces of the friction strips of the friction inner joint and the friction outer joint are both arc-shaped.

Preferably, the belt transmission mechanism comprises a driving belt wheel and a driven belt wheel, the driving belt wheel is fixedly connected to an output shaft of the motor, the driven belt wheel is fixedly connected to the transmission shaft, and a transmission belt is connected between the driving belt wheel and the driven belt wheel.

Preferably, the warning subassembly includes coil and magnet, magnet passes through mount fixed connection outside the speed reducer output shaft, the outside of magnet sets up the coil, coil fixed connection is in speed reducer shell inner wall, just the coil electricity is connected with normally closed relay, normally closed relay electricity is connected with bee calling organ and external power source, bee calling organ fixed connection is on the outer wall surface of speed reducer shell.

Preferably, the coil is a hollow cylindrical coil, and the magnet and the coil are located on the same axis.

Compared with the prior art, the beneficial effects of the utility model are that:

1) according to the motor speed reducer with the overload protection function, the friction inner joint and the friction outer joint are arranged, so that the transmission shaft can drive the friction inner joint to rotate in the friction outer joint when the output shaft of the speed reducer cannot rotate due to overload and failure of the output shaft of the speed reducer or mechanical failure, and the condition that the motor is burnt out or equipment is damaged due to the fact that the output shaft of the motor continuously drives the output shaft of the speed reducer to rotate is avoided; meanwhile, friction strips are arranged in the friction inner joint and the friction outer joint, and the friction coefficient between the friction strips can be adjusted according to the friction torque when the output shaft of the speed reducer is overloaded, so that the output shaft of the speed reducer can work normally when overload or faults do not occur.

2) This motor reducer with overload protection through setting up the warning subassembly, accessible speed reducer output shaft drives magnet and is cutting magnetic induction line motion in the coil to make the coil produce electric current and make the normal close relay circular telegram keep buzzer and external power source's connecting circuit disconnection, when speed reducer output shaft transships or stall, normal close relay loses the electricity closure, thereby makes buzzer receive the electricity, can in time remind the staff.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a schematic structural view of the rubbing strip of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a motor 1, a buzzer 2, a speed reducer housing 3, a transmission shaft 4, a friction inner joint 5, a friction outer joint 6, a friction strip 7, a speed reducer output shaft 8, a driving belt wheel 9, a driven belt wheel 10, a transmission belt 11, a coil 12, a magnet 13 and a normally closed relay 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a motor speed reducer with overload protection comprises a motor 1 and a speed reducer, wherein the motor 1 is fixedly connected to the upper end of the speed reducer, the speed reducer comprises a speed reducer shell 3 and a transmission shaft 4, the transmission shaft 4 is connected with an output shaft of the motor 1 through a belt transmission mechanism, one end of the transmission shaft 4 extends into the speed reducer shell 3 and is fixedly connected with a friction inner joint 5, the outer part of the friction inner joint 5 is sleeved with a friction outer joint 6, the outer peripheral wall of the friction inner joint 5 and the inner peripheral wall surface of the friction outer joint 6 are fixedly connected with a plurality of friction strips 7 at equal intervals, the friction strips 7 of the friction inner joint 5 and the friction outer joint 6 are distributed in a staggered mode at intervals, one end of the friction outer joint 6 is fixedly connected with a speed reducer output shaft 8, the speed reducer output shaft 8 is rotatably connected to the speed reducer shell 3, and the speed reducer output shaft 8 is connected with an alarm assembly; by arranging the friction inner joint 5 and the friction outer joint 6, when the output shaft 8 of the speed reducer is overloaded and fails or the output shaft 8 of the speed reducer cannot rotate due to mechanical failure, the transmission shaft 4 can drive the friction inner joint 5 to rotate in the friction outer joint 6, so that the condition that the motor 1 is burnt out or equipment is damaged due to the fact that the output shaft of the motor continuously drives the output shaft 8 of the speed reducer to rotate is avoided; meanwhile, friction strips 7 are arranged in the friction inner joint 5 and the friction outer joint 6, so that the friction coefficient between the friction strips 7 can be adjusted according to the friction torque when the speed reducer output shaft 8 is overloaded, and the speed reducer output shaft 8 can be ensured to normally work when overload or failure does not occur.

Wherein, the outer surfaces of the friction strips 7 of the friction inner joint 5 and the friction outer joint 6 are both arc-shaped.

Wherein, belt drive includes driving pulley 9 and driven pulley 10, and driving pulley 9 fixed connection is in the output shaft of motor 1, and driven pulley 10 fixed connection is connected with drive belt 11 in transmission shaft 4 between driving pulley 9 and the driven pulley 10.

The alarm assembly comprises a coil 12 and a magnet 13, the magnet 13 is fixedly connected to the outside of the output shaft 8 of the speed reducer through a fixing frame, the coil 12 is arranged on the outside of the magnet 13, the coil 12 is fixedly connected to the inner wall of the shell 3 of the speed reducer, the coil 12 is electrically connected with a normally closed relay 14, the normally closed relay 14 is electrically connected with a buzzer 2 and an external power supply, and the buzzer 2 is fixedly connected to the surface of the outer wall of the shell 3 of the speed reducer; the coil 12 is a hollow cylindrical coil, and the magnet 13 and the coil 12 are positioned on the same axis; through setting up the warning subassembly, accessible speed reducer output shaft 8 drives magnet 13 and is cutting magnetic induction line motion in coil 12 to make coil 12 produce electric current and make the circular close relay 14 circular telegram keep buzzer 2 and external power source's connecting circuit disconnection, when speed reducer output shaft 8 transships or stall, the circular close relay 14 loses the electricity closed, thereby makes buzzer 2 receive electric work, can in time remind the staff.

Principle of operation

When the motor speed reducer with the overload protection function is installed, the friction coefficient between the friction strips 7 is adjusted in advance according to the friction torque when the output shaft 8 of the speed reducer is overloaded, so that the output shaft 8 of the speed reducer can work normally when overload or faults do not occur.

When the electric buzzer works, the motor 1 is started, the motor output shaft drives the transmission shaft 4 to rotate through the belt transmission mechanism, the transmission shaft 4 drives the reducer output shaft 8 to rotate through the friction connection of the friction inner joint 5 and the friction outer joint 6, so that power is provided for mechanical equipment, and meanwhile, the reducer output shaft 8 drives the magnet 13 to perform cutting magnetic induction line motion in the coil 12, so that the coil 12 generates current to electrify the normally closed relay 14 to keep the buzzer 2 disconnected with a connection circuit of an external power supply; when speed reducer output shaft 8 transships, the trouble or when leading to the unable rotation of speed reducer output shaft 8 because of mechanical failure, transmission shaft 4 drives friction nipple 5 at the 6 internal rotations of friction external joint, avoid the motor output shaft to continue to drive speed reducer output shaft 8 and rotate the condition emergence that leads to motor 1 to burn out or equipment to damage, magnet 13 rotational speed slows down simultaneously and sets up the stall, makes the 14 electricity consumptions of normally closed relay closed to make bee calling organ 2 receive electric work, thereby in time remind the staff.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A motor speed reducer with overload protection comprises a motor (1) and a speed reducer, and is characterized in that the motor (1) is fixedly connected to the upper end of the speed reducer, the speed reducer comprises a speed reducer shell (3) and a transmission shaft (4), the transmission shaft (4) is connected with an output shaft of the motor (1) through a belt transmission mechanism, one end of the transmission shaft (4) extends into the speed reducer shell (3) and is fixedly connected with a friction inner joint (5), a friction outer joint (6) is sleeved outside the friction inner joint (5), a plurality of friction strips (7) are fixedly connected to the outer peripheral wall of the friction inner joint (5) and the inner peripheral wall surface of the friction outer joint (6) at equal intervals, the friction strips (7) of the friction inner joint (5) and the friction outer joint (6) are distributed in a staggered mode at intervals, and one end of the friction outer joint (6) is fixedly connected with a speed reducer output shaft (8), the speed reducer is characterized in that the speed reducer output shaft (8) is rotationally connected to the speed reducer shell (3), and the speed reducer output shaft (8) is connected with an alarm assembly.

2. The motor reducer with overload protection as recited in claim 1, wherein the outer surfaces of the friction bars (7) of the inner friction joint (5) and the outer friction joint (6) are arc-shaped.

3. The motor reducer with overload protection according to claim 1, wherein the belt transmission mechanism comprises a driving pulley (9) and a driven pulley (10), the driving pulley (9) is fixedly connected to an output shaft of the motor (1), the driven pulley (10) is fixedly connected to the transmission shaft (4), and a transmission belt (11) is connected between the driving pulley (9) and the driven pulley (10).

4. The motor speed reducer with the overload protection function according to claim 1, wherein the alarm assembly comprises a coil (12) and a magnet (13), the magnet (13) is fixedly connected to the outside of the output shaft (8) of the speed reducer through a fixing frame, a coil (12) is arranged on the outside of the magnet (13), the coil (12) is fixedly connected to the inner wall of the shell (3) of the speed reducer, the coil (12) is electrically connected with a normally closed relay (14), the normally closed relay (14) is electrically connected with a buzzer (2) and an external power supply, and the buzzer (2) is fixedly connected to the surface of the outer wall of the shell (3) of the speed reducer.

5. The motor reducer with overload protection according to claim 4, wherein the coil (12) is a hollow cylindrical coil, and the magnet (13) and the coil (12) are located on the same axis.