Speed reduction motor with self-lubricating structure

Abstract

The utility model discloses a speed reduction motor with a self-lubricating structure, which comprises a motor, a worm, a worm gear and a speed reduction box body, the output end of the motor extends into the speed reduction box body and is connected with one end of the worm, the worm gear is rotatably arranged on the inner side of the speed reduction box body, the top of the worm gear is meshed with the worm, and the output end of the motor is connected with the output end of the worm. A worm gear is arranged on the worm, a transmission rod is connected to the middle of the worm gear, the transmission rod penetrates through the reduction gearbox body, a first oil storage cavity is formed in the worm, a first oil outlet hole is formed in the tooth bottom of a thread on the surface of the worm, and the first oil outlet hole is communicated with the first oil storage cavity in the worm. According to the scheme, lubricating oil can be automatically provided for the meshing portion of the worm and the worm gear when the worm rotates, and it is guaranteed that the meshing portion is in a lubricating state all the time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of speed reducer motor, specifically relates to a speed reducer motor with self -lubricating structure. BACKGROUND

[0002] The worm gear reducer is used for driving the worm gear to rotate by the rotation of the worm, so as to reduce the rotation speed and increase the torque. The worm gear reducer matches the rotation speed and transmits the torque between the prime mover and the working machine or the actuator. The speed reducer motor is the combination of the reducer and the motor. The motor spindle is directly connected with the reducer, and the output shaft of the reducer outputs the rotation speed.

[0003] In the worm drive, the relative sliding speed between the tooth surfaces is large, and when the lubrication is poor, the transmission efficiency is significantly reduced, and severe wear and the danger of galling damage are caused. The Chinese patent with the application number 2017215596967 discloses a lubricated and heat dissipated worm, which comprises a worm shaft body having a first mounting section, a worm tooth forming section and a second mounting section connected in sequence. The outer periphery of the first mounting section is formed with a connecting external thread. The outer end of the first mounting section is recessed towards the inside of the worm shaft body and has a lubricating shaft hole. The lubricating shaft hole and the worm shaft body are coaxially extended and arranged. The lubricating shaft hole extends from the outer end of the first mounting section to the junction of the worm tooth forming section and the second mounting section. The worm tooth forming section is provided with a plurality of first oil outlet holes penetrating the lubricating shaft hole and the outer peripheral surface of the worm tooth forming section. The outer periphery of the worm tooth forming section is nested with a copper ring. The outer peripheral surface of the copper ring is formed with worm teeth. A plurality of second oil outlet holes penetrating the inner cavity of the copper ring and the outer peripheral surface of the copper ring are provided on the copper ring corresponding to the tooth gaps. In this way, the lubrication effect is improved.

[0004] The above-mentioned scheme can continuously provide lubricating oil between the tooth surfaces during the worm drive, thereby improving the lubrication effect. However, in the above-mentioned scheme, the first oil outlet hole and the second oil outlet hole are always in the open state. Therefore, the lubricating oil in the worm shaft body will continuously flow out even when the worm gear is not working, which will cause the problem of waste of lubricating oil. UTILITY MODEL CONTENTS

[0005] To solve the above problems, the utility model provides a reduction motor with a self-lubricating structure, comprising a motor, a worm, a worm wheel and a reduction box body, wherein the output end of the motor extends into the reduction box body and is connected to one end of the worm, the worm wheel is rotatably arranged inside the reduction box body and the top of the worm wheel is meshed with the worm, a transmission rod is connected in the middle of the worm wheel, and the transmission rod is arranged through the reduction box body, a first oil storage chamber is provided inside the worm, a first oil outlet hole is opened at the bottom of the thread on the surface of the worm, the first oil outlet hole is connected to the first oil storage chamber inside the worm, and an oil supply chamber is further provided between the first oil outlet hole and the first oil storage chamber, the oil supply chamber is a truncated cone structure, support rods are provided on both sides of the bottom of the oil supply chamber, a spring is connected above the support rod, an adjusting sealing plate is connected above the spring, an extrusion rod is provided on the adjusting sealing plate, the diameter of the adjusting sealing plate is larger than the first oil outlet hole, and the diameter of the extrusion rod is smaller than the first oil outlet hole.

[0006] Preferably, a mounting groove is provided on the side of the reduction gear box body away from the motor, a bearing is fixed in the mounting groove, the side of the worm gear away from the motor is rotatably connected to the bearing, a second oil storage chamber is provided above the mounting groove, a second oil outlet is provided at the bottom of the second oil storage chamber, and a penetrating oil inlet is provided above the outer ring of the bearing, the oil inlet is connected to the second oil outlet and the oil inlet and the second oil outlet are coaxially arranged.

[0007] Preferably, an annular plate is fixed in the mounting groove, the bearing is fixed on the inner side of the annular plate, a first O-shaped rubber ring and a second O-shaped rubber ring are provided between the outer side of the annular plate and the inner side of the mounting groove, and a through hole is also provided above the annular plate, the through hole is connected to the oil inlet hole and the through hole and the oil inlet hole are coaxially arranged.

[0008] Preferably, the top of the extrusion rod is connected with a hemispherical rubber head.

[0009] Preferably, three first oil outlet holes are provided and are evenly distributed on the surface of the worm.

[0010] The advantages of the utility model are:

[0011] 1. This solution achieves intelligent control of lubricant oil by introducing a self-lubricating structure consisting of a spring and an adjustable sealing plate. When the worm and worm wheel are properly engaged, the worm wheel teeth periodically press the extrusion rod, thereby opening the oil outlet and releasing lubricant for lubrication. When the oil outlet is not in the lubrication position, the spring pushes the adjustable sealing plate to automatically block the oil outlet, preventing lubricant waste.

[0012] 2. The scheme can ensure that the bearing rollers are fully lubricated during rotation by providing a second oil storage cavity and a second oil outlet hole connected to the bearing outer ring oil inlet hole. This not only reduces the friction between the rollers and the inner and outer rings, but also effectively prevents wear and overheating caused by insufficient lubrication, thereby prolonging the service life of the bearing and improving the operation stability and reliability of the entire speed reducer motor.

[0013] 3. The scheme effectively absorbs the vibration generated by the bearing during the rotation of the worm by providing an annular plate and first and second O-shaped rubber rings. This shock-absorbing design can significantly reduce the impact of vibration on the second oil storage cavity and the lubricating oil inside, thereby avoiding the accelerated flow and waste of lubricating oil in the second oil storage cavity caused by vibration. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional exploded view of the utility model.

[0015] Figure 2 It is a cross-sectional view of the utility model.

[0016] Figure 3 It is a worm structure diagram of the utility model.

[0017] Figure 4 It is a worm cross-sectional view of the utility model.

[0018] Figure 5 It is a Figure 4 enlarged structure diagram of mark A in the utility model.

[0019] Figure 6 It is a spring compression structure diagram in the oil supply cavity of the utility model.

[0020] Figure 7 It is a Figure 2 enlarged structure diagram of mark B in the utility model.

[0021] Figure 8 It is a bearing structure diagram of the utility model.

[0022] In the figure: 1 motor, 2 worm, 3 worm gear, 4 speed reducer body, 5 transmission rod, 6 first oil storage cavity, 7 first oil outlet hole, 8 oil supply cavity, 9 support rod, 10 spring, 11 adjusting plugging plate, 12 extrusion rod, 13 mounting groove, 14 bearing, 15 second oil storage cavity, 16 second oil outlet hole, 17 oil inlet hole, 18 annular plate, 19 first O-shaped rubber ring, 20 second O-shaped rubber ring, 21 through hole, 22 hemispherical rubber head, 23 outer ring, 24 inner ring, 25 roller. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolt connection, or gluing connection. In short, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Example 1, as Figures 1-2 As shown, a reduction motor with a self-lubricating structure includes a motor 1, a worm 2, a worm wheel 3, and a reduction housing 4. The output end of the motor 1 extends into the reduction housing 4 and is connected to one end of the worm 2. The worm wheel 3 is rotatably arranged inside the reduction housing 4, and the top of the worm wheel 3 is engaged with the worm 2. A transmission rod 5 is connected to the middle of the worm wheel 3 and is arranged through the reduction housing 4. The motor 1 drives the worm 2 to rotate, the rotation of the worm 2 drives the worm wheel 3 to rotate, and the worm wheel 3 drives the transmission rod 5 to rotate to output power.

[0027] The inside of the worm 2 is provided with a first oil storage cavity 6, and the bottom of the surface thread of the worm 2 is provided with a first oil outlet hole 7, which is in communication with the first oil storage cavity 6 in the inside of the worm 2. The first oil storage cavity 6 stores lubricating oil, and one side of the first oil storage cavity 6 is connected with an oil delivery channel. The lubricating oil enters the first oil storage cavity 6 from the oil delivery channel. During the rotation of the worm 2, the lubricating oil flows from the first oil outlet hole 7 formed at the bottom of the surface thread of the worm 2 to the surface part of the worm 2 meshing with the worm wheel 3, thereby improving the lubricating effect.

[0028] In combination with Figure 5 , the first oil outlet hole 7 and the first oil storage cavity 6 are further provided with an oil supply cavity 8, which is in the shape of a circular truncated cone. The bottom of the oil supply cavity 8 is provided with support rods 9, the upper part of the support rods 9 is connected with springs 10, the upper part of the springs 10 is connected with an adjusting plugging plate 11, the adjusting plugging plate 11 is provided with an extrusion rod 12, the diameter of the adjusting plugging plate 11 is larger than that of the first oil outlet hole 7, and the diameter of the extrusion rod 12 is smaller than that of the first oil outlet hole 7. Under normal conditions, due to the elastic force of the spring 10, the adjusting plugging plate 11 blocks the bottom of the first oil outlet hole 7, and the lubricating oil in the first oil storage cavity 6 cannot enter the first oil outlet hole 7 through the oil supply cavity 8. Therefore, under normal conditions, the lubricating oil in the first oil storage cavity 6 will not be wasted.

[0029] When the worm 2 meshes with the worm wheel 3, the tooth part of the outer circumferential surface of the worm wheel 3 will periodically press the extrusion rod 12, in combination with Figure 6 At this time, the first oil outlet hole 7 is in a downward state, the extrusion rod 12 drives the adjusting plugging plate 11 to move in the direction of the first oil storage cavity 6, and keeps the first oil outlet hole 7 in an open state. Under the action of gravity and centrifugal force, the lubricating oil in the first oil storage cavity 6 moves in the direction of the first oil outlet hole 7 and flows to the outside, thereby lubricating the meshing part of the worm 2 and the worm wheel 3. When the first oil outlet hole 7 is away from the worm wheel 3, the spring 10 again drives the adjusting plugging plate 11 to block the first oil outlet hole 7 through the elastic force, thereby preventing the lubricating oil from flowing out of the first oil outlet hole 7. The first oil outlet hole 7 is provided with three and is uniformly distributed on the surface of the worm 2. By introducing the self-lubricating structure composed of the spring 10 and the adjusting plugging plate 11, the intelligent control of the lubricating oil is realized. Since the lubricating oil is only released when it is needed, the utilization efficiency of the lubricating oil is significantly improved, and unnecessary waste is reduced.

[0030] The top of the extrusion rod 12 is connected with a hemispherical rubber head 22 in the embodiment, which serves as a contact part between the extrusion rod 12 and the worm wheel 3, and can buffer and disperse the impact force and vibration generated when the worm wheel 3 meshes with the worm 2 to a certain extent. This helps to reduce the wear and damage of the worm wheel 3 and the worm 2, and prolongs the service life of the equipment.

[0031] In combination with Figures 7-8The embodiment has the same parts as embodiment 1, and the difference of the embodiment is that a mounting groove 13 is arranged at the side of the reduction gearbox body 4 far from the motor 1, a bearing 14 is fixedly arranged in the mounting groove 13, the worm 2 is rotationally connected with the bearing 14 at the side far from the motor 1, and one end of the worm 2 is rotationally supported by the bearing 14. A second oil storage cavity 15 is arranged above the mounting groove 13, a second oil outlet hole 16 is arranged at the bottom of the second oil storage cavity 15, an oil inlet hole 17 is arranged through the upper side of the outer ring 23 of the bearing 14, the oil inlet hole 17 is in communication with the second oil outlet hole 16 and is coaxially arranged with the second oil outlet hole 16. The bearing 14 is composed of the outer ring 23, the inner ring 24 and the rollers 25 between the outer ring 23 and the inner ring 24. The second oil storage cavity 15 can supply lubricating oil to the rollers 25 through the second oil outlet hole 16 and the oil inlet hole 17 on the outer ring 23, so as to keep the lubrication of the rollers 25 during rotation. The second oil storage cavity 15 is directly communicated with the outside of the reduction gearbox body 4, and a protective cover can be arranged for protection. The second oil storage cavity 15 can conveniently add lubricating oil during rotation of the bearing 14. The scheme ensures sufficient lubrication of the rollers 25 of the bearing 14, reduces the vibration and noise caused by friction and abrasion, and improves the operation stability and reliability of the entire reduction motor.

[0032] An annular plate 18 is also fixedly arranged in the mounting groove 13, the bearing 14 is fixedly arranged on the inner side of the annular plate 18, the first O-shaped rubber ring 19 and the second O-shaped rubber ring 20 are arranged between the outer side of the annular plate 18 and the inner side of the mounting groove 13, a through hole 21 is also arranged on the upper side of the annular plate 18, the through hole 21 is in communication with the oil inlet hole 17 and is coaxially arranged with the oil inlet hole 17. When the worm 2 rotates in the bearing 14, the bearing 14 will generate a certain vibration. The first O-shaped rubber ring 19 and the second O-shaped rubber ring 20 can absorb a certain vibration by arranging the annular plate 18, the first O-shaped rubber ring 19 and the second O-shaped rubber ring 20, so as to avoid that the bearing 14 directly transmits the vibration to the second oil storage cavity 15 and reduces the vibration of the second oil storage cavity. Otherwise, the severe vibration of the second oil storage cavity 15 will accelerate the flow of the lubricating oil, causing unnecessary waste of the lubricating oil.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A speed reduction motor with self-lubricating structure, characterized by: The application relates to a worm reduction gearbox, which comprises a motor (1), a worm (2), a worm wheel (3) and a reduction gearbox body (4), the output end of the motor (1) extends into the reduction gearbox body (4) and is connected with one end of the worm (2), the worm wheel (3) is arranged on the inner side of the reduction gearbox body (4) and the top of the worm wheel (3) is engaged with the worm (2), a transmission rod (5) is connected with the middle of the worm wheel (3), the transmission rod (5) passes through the reduction gearbox body (4), a first oil storage cavity (6) is arranged in the worm (2), a first oil outlet hole (7) is arranged in the tooth root of the screw thread on the surface of the worm (2), the first oil outlet hole (7) is communicated with the first oil storage cavity (6) in the worm (2), an oil supply cavity (8) is further arranged between the first oil outlet hole (7) and the first oil storage cavity (6), the oil supply cavity (8) is in a circular table structure, support rods (9) are arranged on the two sides of the bottom of the oil supply cavity (8), springs (10) are connected above the support rods (9), an adjusting plugging plate (11) is connected above the springs (10), an extrusion rod (12) is arranged on the adjusting plugging plate (11), the diameter of the adjusting plugging plate (11) is larger than that of the first oil outlet hole (7), and the diameter of the extrusion rod (12) is smaller than that of the first oil outlet hole (7).

2. The speed reduction motor with self-lubricating structure according to claim 1, characterized in that: A mounting groove (13) is arranged on the side of the reduction gearbox body (4) far from the motor (1), a bearing (14) is fixedly arranged in the mounting groove (13), the side of the worm (2) far from the motor (1) is rotationally connected with the bearing (14), a second oil storage cavity (15) is arranged above the mounting groove (13), a second oil outlet hole (16) is arranged on the bottom of the second oil storage cavity (15), a through oil inlet hole (17) is arranged above the outer ring (23) of the bearing (14), the oil inlet hole (17) is communicated with the second oil outlet hole (16) and the oil inlet hole (17) is coaxially arranged with the second oil outlet hole (16).

3. The speed reduction motor with self-lubricating structure according to claim 2, characterized in that: An annular plate (18) is fixedly arranged in the mounting groove (13), the bearing (14) is fixedly arranged on the inner side of the annular plate (18), a first O-shaped rubber ring (19) and a second O-shaped rubber ring (20) are arranged between the outer side of the annular plate (18) and the inner side of the mounting groove (13), a through hole (21) is further arranged above the annular plate (18), the through hole (21) is communicated with the oil inlet hole (17) and the through hole (21) is coaxially arranged with the oil inlet hole (17).

4. The speed reduction motor with self-lubricating structure according to claim 3, characterized in that: A hemispherical rubber head (22) is connected with the top of the extrusion rod (12).

5. The speed reduction motor with self-lubricating structure according to claim 4, characterized in that: The first oil outlet hole (7) is arranged with three first oil outlet holes which are uniformly distributed on the surface of the worm (2).

Images