Waterproof structure for motor rotating shaft

Abstract

The utility model discloses a waterproof structure for a motor rotating shaft, belongs to the related technical field of motors, and aims to solve the problems that in the prior art, after long-term operation, the sealing performance is easily reduced, dust and water vapor still invade into a motor, and the performance and the service life of the motor are affected. A first sleeve body and a second sleeve body are arranged at the position of a motor rotating shaft, the first sleeve body and the second sleeve body are in contact with each other, a plurality of sets of step blocks are machined at the position of the motor rotating shaft, the step blocks are placed in internal step grooves after the first sleeve body and the second sleeve body are attached, and therefore a plurality of water blocking defense lines are formed at the positions of the step blocks and the step grooves. And by matching with the existing motor and rotating shaft sealing structure, the sealing performance between the rotating shaft and the sleeve body can be enhanced, water vapor invasion after the existing motor and rotating shaft sealing structure works for a long time is prevented, and the motor performance and longer service life are ensured to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor related technical field, more specifically, especially relate to a waterproof structure for motor rotating shaft. BACKGROUND

[0002] Waterproof of motor rotating shaft is very important, and it is related to reliable operation of motor in humid or immersed water and other harsh environments. Common waterproof methods include sealing waterproof, such as installing rubber sealing ring, oil seal and the like, which tightly fit rotating shaft and motor cover to prevent water from entering. There is also a special waterproof coating, which forms a dense waterproof film on the surface of the rotating shaft through spraying, dipping and other processes to resist water vapor. In addition, in the structural design, waterproof grooves, drainage holes and other structures are provided to allow the infiltrated water to be drained in time. Waterproof treatment can effectively prevent motor internal parts from rusting and short circuiting, avoid performance degradation and frequent failures of the motor due to water intrusion, thereby prolonging the service life of the motor and ensuring stable and safe operation of the motor in various water environments.

[0003] Although the existing motor rotating shaft has a sealing structure at the motor cover, the sealing performance is prone to decline after long-term operation, and dust and water vapor can still enter the motor interior, affecting the performance and service life of the motor. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a waterproof structure for a motor rotating shaft to solve the technical problems of the prior art that the sealing performance is prone to decline after long-term operation, dust and water vapor can still enter the motor interior, and the performance and service life of the motor are affected.

[0005] To achieve the above object, the utility model realizes the following technical scheme: a plurality of step blocks are machined at the motor rotating shaft, and the step blocks are placed in the internal step grooves after the first sleeve body and the second sleeve body are attached. In this way, a plurality of water-blocking lines are formed at the step blocks and the step grooves, and the sealing performance between the rotating shaft and the sleeve body can be enhanced by cooperating with the existing motor and rotating shaft sealing structure. Water vapor intrusion after long-term operation of the existing motor and rotating shaft sealing structure is prevented, and the performance and service life of the motor are ensured to be longer.

[0006] As a preferred technical scheme of the utility model, a plurality of through holes are formed at the bottom end of the second sleeve body, and the plurality of through holes are respectively communicated with the corresponding step grooves.

[0007] As a preferred technical scheme of the utility model, a key groove is formed at the motor rotating shaft.

[0008] As a preferred technical scheme of the utility model, a plurality of vertically placed bolts are threadedly connected to the front end and the rear end of the first sleeve body, and the plurality of bolts are threadedly connected to the second sleeve body.

[0009] The first sleeve body and the second sleeve body are connected with rubber strips at the joint.

[0010] The first sleeve body and the second sleeve body are made of corrosion-resistant stainless steel, which can effectively resist the corrosion of humid, acidic and alkaline environments, prolong the service life of the waterproof structure, and ensure that the waterproof function can still be stably played under complex working conditions.

[0011] The utility model provides a waterproof structure for motor rotating shaft has the following beneficial effects:

[0012] The utility model discloses through the cooperation between motor rotating shaft, step block, first sleeve body, second sleeve body and step groove, a plurality of step blocks are processed at the motor rotating shaft, and the step block is placed in the step groove in the joint of the first sleeve body and the second sleeve body, so that a plurality of water prevention lines are formed at the step block and the step groove, and the sealing performance between the rotating shaft and the sleeve body can be enhanced by cooperating with the existing motor and rotating shaft sealing structure, so that the motor performance and service life are ensured to be longer.

[0013] When the rotating shaft, the first sleeve body and the second sleeve body are transversely arranged, if water vapor seeps into the joint of the first sleeve body and the second sleeve body, the water vapor will gradually gather at the bottom of the step groove of the second sleeve body due to the uniform circular structure of the step groove and the step block and the action of gravity. At the same time, the through hole is specially arranged below the second sleeve body, and the water gathered here can be smoothly discharged through the through hole. Such design avoids the accumulation of water vapor inside, reduces the risk of motor failure caused by water vapor invasion, and ensures that the motor can still stably and safely run in an environment where water vapor may exist. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model structure;

[0015] Figure 2 It is Figure 1 It is a structure schematic view of the first sleeve body, the second sleeve body and the bolt;

[0016] Figure 3 It is Figure 1 It is a sectional structure schematic view;

[0017] Figure 4 It is Figure 1 It is a sectional structure schematic view of the first sleeve body and the second sleeve body;

[0018] Figure 5 It is Figure 3 It is a structure schematic view of the motor rotating shaft and the step block.

[0019] Fig. 1, motor shaft; 2, step block; 3, first sleeve; 4, second sleeve; 5, step groove; 6, through hole; 7, rubber strip; 8, bolt. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0021] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Please refer to Figures 1 to 5 The present application provides a technical scheme: a waterproof structure for a motor shaft, comprising a motor shaft 1, a plurality of step blocks 2 are machined at the motor shaft 1, a first sleeve 3 and a second sleeve 4 are provided at the motor shaft 1, the first sleeve 3 and the second sleeve 4 are in contact with each other, a plurality of step grooves 5 are provided at the first sleeve 3 and the second sleeve 4, and each two step grooves 5 form a step port, and the plurality of step blocks 2 are respectively placed in the corresponding step grooves 5. Lubricating oil can be applied in the first sleeve 3 and the second sleeve 4, so that when the motor shaft 1 drives the step blocks 2 to rotate, the wear of the step blocks 2 on the step grooves 5 can be avoided. After assembly, the step blocks 2 are tightly embedded in the step grooves 5, forming a plurality of labyrinth-type water-blocking lines. These lines take advantage of the density difference between air and water and the principle of fluid mechanics to effectively prevent water vapor from entering, so that the internal part of the motor is not affected by water vapor, even in harsh underwater environment or high humidity working conditions.

[0024] Among them, the second set of body 4 bottom end is provided with a plurality of groups of through holes 6, a plurality of groups of through holes 6 are communicated with corresponding stepped groove 5 respectively, when the water vapor is inadvertently penetrated, due to the gravity and the special design of stepped groove 5, the water vapor will converge to the stepped groove 5 bottom of second set of body 4, then through the through hole 6 is discharged rapidly.

[0025] Among them, the motor shaft 1 is provided with a keyway, the keyway is used for connecting the motor shaft 1 with the external connecting part.

[0026] Among them, the first set of body 3 front end and rear end are all threaded with a plurality of groups of vertically placed bolts 8, a plurality of groups of bolts 8 are all threaded with the second set of body 4, the bolt 8 and the first set of body 3 contact place are installed elastic washers. The elastic washer can provide continuous elastic pre-tightening force when the motor is running, prevent the bolt 8 from loosening due to vibration, ensure the connection stability between the first set of body 3 and the second set of body 4, so as to maintain good waterproof effect.

[0027] Among them, the first set of body 3 and the second set of body 4 are all connected with rubber strips 7, in the installation, the rubber strip 7 is accurately embedded in the first set of body 3 and the second set of body 4 of the lamination groove, provides additional sealing guarantee for the waterproof structure.

[0028] Among them, the first set of body 3 and the second set of body 4 are all made of corrosion-resistant stainless steel, which can effectively resist the corrosion of humid, acid and alkali and other harsh environments, prolong the service life of the waterproof structure, ensure that it can still play a stable waterproof role in complex working conditions, this kind of stainless steel not only has excellent moisture resistance, acid and alkali resistance, but also has high strength and hardness, can withstand various stresses in the process of motor operation.

[0029] The specific use mode and effect of the embodiment are as follows:

[0030] The utility model discloses a first sleeve body 3 and second sleeve body 4 are sleeved at motor rotating shaft 1, and after the sleeve is completed, the bolt 8 is fixedly connected to first sleeve body 3 and second sleeve body 4, and after the completion, first sleeve body 3 and second sleeve body 4 are placed with the same center as motor rotating shaft 1 and are corrected, after the correction, second sleeve body 4 or first sleeve body 3 is welded on the outside motor cover, so the cooperation of the step block 2 at motor rotating shaft 1, first sleeve body 3 and second sleeve body 4 place step groove 5 can realize accurate positioning and stable connection. In the motor operation process, the step block 2 and step groove 5 are closely fitted, effectively prevent first sleeve body 3 and second sleeve body 4 from producing displacement or shaking relative to motor rotating shaft 1, and ensure the stability of motor operation. Moreover, first sleeve body 3 or second sleeve body 4 welded on the outside motor cover further enhances the rigidity and sealing property of the whole structure. When the motor is in complex working condition, such as humid environment, the sealing effect of the step structure cooperation welding can effectively block the water vapor along the rotating shaft into the motor interior, reduce the probability of the motor short circuit, corrosion and other faults due to damp, greatly prolong the service life of the motor, and guarantee the efficient and reliable operation of the motor.

[0031] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, carries out equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A waterproof structure for a motor shaft, characterized in that: Includes a motor shaft (1), on which multiple sets of stepped blocks (2) are machined. A first set (3) and a second set (4) are provided on the motor shaft (1). The first set (3) and the second set (4) are in contact with each other. Multiple sets of stepped grooves (5) are opened on both the first set (3) and the second set (4). Every two sets of stepped grooves (5) form a stepped opening. Multiple sets of stepped blocks (2) are placed in the corresponding stepped grooves (5).

2. The waterproof structure for a motor shaft according to claim 1, characterized in that: The bottom end of the second body (4) has multiple sets of through holes (6), and the multiple sets of through holes (6) are respectively connected to the corresponding stepped grooves (5).

3. The waterproof structure for a motor shaft according to claim 1, characterized in that: A keyway is provided at the motor shaft (1).

4. A waterproof structure for a motor shaft according to claim 1, characterized in that: The front and rear ends of the first sleeve (3) are threadedly connected to multiple sets of vertically placed bolts (8), and the multiple sets of bolts (8) are threadedly connected to the second sleeve (4).

5. A waterproof structure for a motor shaft according to claim 1, characterized in that: Rubber strips (7) are connected at the joint of the first body (3) and the second body (4).

6. A waterproof structure for a motor shaft according to claim 1, characterized in that: The first set (3) and the second set (4) are both made of corrosion-resistant stainless steel, which can effectively resist the erosion of harsh environments such as moisture, acid and alkali, extend the service life of the waterproof structure, and ensure that it can still play a stable waterproof role under complex working conditions.

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