A low-noise and stable planetary gear reducer

Abstract

The present invention discloses a low-noise and stable planetary gear reducer, comprising a shell, the outer surface of the shell is symmetrically provided with mounting holes, the inside of the mounting holes is provided with a sun gear, a planetary gear and a gear ring, the inner wall of the shell is evenly provided with metal rods near the sun gear, the metal rods penetrate the shell and extend to the outside of the shell, the metal rods are slidably connected to the shell, both ends of the metal rods are provided with heat dissipation grooves, one side of the inner wall of the heat dissipation groove is fixedly connected with an elastic arc plate, and the present invention relates to the technical field of planetary reducers. The low-noise and stable planetary gear reducer achieves the purpose of improving the heat dissipation capacity, can transfer the heat generated during the operation of the equipment to the outside of the equipment for cooling, improves the sound insulation and noise reduction capacity of the equipment, can reduce the noise generated during the operation of the equipment, improves the sensitivity of the equipment, and can quickly cool down the internal temperature of the equipment after it rises.

Description

Technical Field

[0001] The invention relates to the technical field of planetary reducers, and in particular to a low-noise and stable planetary gear reducer. Background Art

[0002] Planetary gear reducers, also known as planetary speed reducers, are mainly used to reduce speed and increase torque. In the reducer family, planetary speed reducers are widely used in servo motors, stepper motors, DC motors and other transmission systems due to their small size, high transmission efficiency, wide deceleration range, high precision and many other advantages. When the planetary gear reducer is running, it needs to be lubricated with lubricant to increase its service life.

[0003] However, the existing planetary gear reducer has poor heat dissipation capacity and cannot transfer the heat generated during the operation of the equipment to the outside of the equipment for cooling. The sound insulation and noise reduction effect is poor and cannot reduce the noise generated during the operation of the equipment. The sensitivity is insufficient and it cannot quickly cool down the internal temperature of the equipment after it rises. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a low-noise and stable planetary gear reducer, which solves the problem of poor heat dissipation capacity of existing planetary gear reducers, can transfer the heat generated during the operation of the equipment to the outside of the equipment for cooling, thereby improving the sound insulation and noise reduction capabilities of the equipment, can reduce the noise generated during the operation of the equipment, improve the sensitivity of the equipment, and can quickly cool down the internal temperature of the equipment after it rises.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A low-noise stable planetary gear reducer, comprising a shell, the outer surface of the shell is symmetrically provided with mounting holes, the inside of the mounting holes is provided with a sun gear, a planetary gear and a gear ring, a metal rod is evenly installed on the inner wall of the shell near the sun gear, the metal rod penetrates the shell and extends to the outside of the shell, the metal rod is slidably connected to the shell, both ends of the metal rod are provided with heat dissipation grooves, one side of the inner wall of the heat dissipation groove is fixedly connected with an elastic arc plate, the elastic arc plate is made of metal, one end of the metal rod located inside the shell is fixedly connected with an extension disk, the inner position of the shell is fixedly connected with a limit ring between the metal rods, the outer sleeve of the limit ring is provided with an inflatable bag, the inflatable bag extends to a position close to the metal rod, the heat dissipation capacity of the device is improved, the heat can be automatically transferred to the outside for heat dissipation after the internal temperature of the device rises, and the temperature of the device is prevented from being too high during operation, the outer side of the inflatable bag is evenly installed with a rubber pad, the rubber pad is fixedly connected to the extension disk, the buffering capacity of the device is improved, the collision generated during the heat dissipation of the device can be weakened, and the noise generated by the metal rod when being pushed for heat dissipation can be prevented.

[0006] Preferably, both sides of the airbag are fixedly connected with metal sheets, and the metal sheets penetrate the airbag and extend to the interior of the airbag.

[0007] Preferably, the metal sheet is fixedly connected to a transverse rod on the side away from the airbag, and extension rods are symmetrically installed on the outside of the transverse rod. Both the transverse rod and the extension rod are made of metal, which improves the sensitivity of the equipment and can quickly start to cool down when the temperature rises during the operation of the equipment. The transverse rod and the extension rod form an effect similar to a soundproof forest, and the noise generated by the equipment is isolated in multiple ways combined with the airbag and rubber pad, thereby improving the sound insulation and noise reduction effect of the equipment.

[0008] Preferably, sound absorbing grooves are symmetrically provided on the top of the rubber pad, and the sound absorbing grooves penetrate the rubber pad.

[0009] Preferably, sound-absorbing cotton is slidably connected between the two sides of the inner wall of the sound-absorbing groove, and the sound-absorbing cotton extends to the outside of the sound-absorbing groove, thereby improving the sound insulation effect of the equipment and reducing the noise generated during the operation of the equipment.

[0010] Preferably, an elastic rod is fixedly connected to the inner bottom of the sound-absorbing groove, and a grid plate is fixedly connected to the top of the elastic rod. The sound-absorbing cotton is fixedly connected to the grid plate. After the air volume inside the inflatable bag expands, it pushes the rubber pad to extrude the extension plate. After the sound-absorbing cotton is squeezed into the sound-absorbing groove, it drives the grid plate to move. The grid plate squeezes and bends the elastic rod for buffering, thereby improving the buffering capacity of the equipment.

[0011] Preferably, a water cooling groove is provided at one end of the metal rod extending to the outside of the shell, a spiral tube is slidably connected to the inner wall of the water cooling groove, the interior of the spiral tube is filled with water, one end of the spiral tube extends to the outside of the water cooling groove, and the end of the spiral tube extending to the outside of the water cooling groove is fixedly connected to a support rod, the end of the support rod away from the spiral tube is fixedly connected to the shell, and heat dissipation holes are evenly provided on the outside of the spiral tube, which can accelerate the heat dissipation speed of the equipment and improve the heat dissipation capacity of the equipment.

[0012] The present invention provides a low-noise and stable planetary gear reducer. It has the following beneficial effects:

[0013] (I) The low-noise and stable planetary gear reducer generates heat and its temperature rises due to internal friction after the planetary gear reducer works. The metal rod and the elastic arc plate increase their temperatures after contacting with the high-temperature air. After the temperature inside the shell increases, the air inside the airbag is heated. After the air inside the airbag is heated, the volume expands. The airbag pushes the extension plate and the metal rod to move to the outside of the shell. During the process of the elastic arc plate located at one end of the shell moving to the outside of the shell, it is squeezed by the shell into the heat dissipation groove. After the part with higher temperature of the metal rod moves to the outside of the shell, it begins to dissipate heat to the outside for cooling. After the temperature of the metal rod decreases, the temperature inside the shell is lowered. After the temperature inside the shell decreases, the air inside the airbag is cooled and cooled. After the temperature of the air inside the airbag decreases, it no longer pushes the metal rod outward. The squeezed elastic arc plate located inside the shell moves to the outside of the heat dissipation groove due to its own elastic force. The elastic arc plate pushes the metal rod to move to the inside of the shell to the initial position, thereby improving the heat dissipation capacity of the device. After the temperature inside the device increases, the heat can be automatically transferred to the outside for heat dissipation, thereby avoiding excessive temperature during the operation of the device.

[0014] (ii) The low-noise and stable planetary gear reducer has its sound generated during operation blocked by the airbag and rubber pad, and part of the sound is absorbed by the sound-absorbing groove and sound-absorbing cotton, thereby improving the sound insulation effect of the equipment and reducing the noise generated during the operation of the equipment.

[0015] (III) The low-noise and stable planetary gear reducer expands in volume when the temperature inside the airbag rises. The airbag pushes the rubber pad to squeeze the extension plate, and the sound-absorbing cotton and the airbag are squeezed and deformed for cushioning, thereby improving the cushioning capacity of the equipment, reducing the collision generated during the heat dissipation process of the equipment, and avoiding the noise generated by the metal rod when it is pushed for heat dissipation.

[0016] (iv) The low-noise and stable planetary gear reducer increases the contact area with the air inside the shell through the transverse rod, the extension rod and the metal sheet. When the planetary gear reducer generates heat during operation, it can quickly conduct heat to heat the air inside the inflatable bag, thereby improving the sensitivity of the equipment and being able to quickly start cooling when the temperature rises during the operation of the equipment.

[0017] (V) This low-noise and stable planetary gear reducer forms a soundproof forest-like effect through transverse rods and extension rods, and isolates the noise generated by the equipment in a variety of ways using inflatable bags and rubber pads, thereby improving the sound insulation and noise reduction effect of the equipment.

[0018] (VI) The low-noise and stable planetary gear reducer, when the metal rod is pushed to move outside the shell, the spiral tube enters the water cooling tank, the spiral tube contacts the metal rod for heat conduction, the water inside the spiral tube is heated, and when the metal rod moves inside the shell, the spiral tube moves to the outside of the water cooling tank. After the spiral tube is exposed to the air, the heat in the internal water is accelerated to dissipate into the air, which can speed up the heat dissipation speed of the equipment and improve the heat dissipation capacity of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the air-filled bag inside the shell of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the gear inside the housing of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the inflatable bag of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the metal rod of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the spiral tube of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the rubber pad of the present invention;

[0026] Figure 8 It is an internal cross-sectional view of the rubber pad of the present invention.

[0027] In the figure: 1-housing, 2-mounting hole, 3-sun gear, 4-planetary gear, 5-gear ring, 6-metal rod, 7-heat dissipation groove, 8-elastic arc plate, 9-extension plate, 10-limiting ring, 11-inflatable bag, 12-rubber pad, 13-metal sheet, 14-transverse rod, 15-extension rod, 16-sound-absorbing groove, 17-sound-absorbing cotton, 18-elastic rod, 19-grid plate, 20-water cooling groove, 21-spiral tube, 22-support rod, 23-heat dissipation hole. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0029] Example 1

[0030] See also Figure 1-Figure 5 The present invention provides a technical solution: a low-noise and stable planetary gear reducer, comprising a shell 1, the outer surface of the shell 1 is symmetrically provided with mounting holes 2, the inside of the mounting holes 2 is provided with a sun gear 3, a planetary gear 4 and a gear ring 5, a metal rod 6 is evenly installed on the inner wall of the shell 1 near the sun gear 3, the metal rod 6 penetrates the shell 1 and extends to the outside of the shell 1, the metal rod 6 is slidably connected to the shell 1, both ends of the metal rod 6 are provided with heat dissipation grooves 7, one side of the inner wall of the heat dissipation groove 7 is fixedly connected with an elastic arc plate 8, the elastic arc plate 8 is made of metal, one end of the metal rod 6 located inside the shell 1 is fixedly connected with an extension disk 9, the inner position of the shell 1 between the metal rods 6 is fixedly connected with a limiting ring 10, the outer sleeve of the limiting ring 10 is provided with an inflatable bag 11, the inflatable bag 11 extends to a position close to the metal rod 6, the outer side of the inflatable bag 11 is evenly provided with a rubber pad 12, and the rubber pad 12 is fixedly connected to the extension disk 9.

[0031] When in use, the elastic arc plates 8 at both ends of the metal rod 6 are bent outward due to their own elasticity. After the planetary gear reducer is working, the internal friction generates heat and the temperature rises. The metal rod 6 and the elastic arc plate 8 are in contact with the high-temperature air and the temperature rises. After the temperature inside the shell 1 rises, the air inside the airbag 11 is heated. The volume of the air inside the airbag 11 expands after the temperature rises. The airbag 11 pushes the extension plate 9 and the metal rod 6 to move to the outside of the shell 1. During the process of the elastic arc plate 8 located at one end of the shell 1 moving to the outside of the shell 1, it is squeezed by the shell 1 into the heat dissipation groove 7, and the part with higher temperature of the metal rod 6 moves to the outside of the shell 1. 1 starts to dissipate heat to the outside for cooling. After the temperature of the metal rod 6 is reduced, the temperature inside the shell 1 is reduced. After the temperature inside the shell 1 is reduced, the air inside the airbag 11 is cooled. After the air temperature inside the airbag 11 is reduced, the metal rod 6 is no longer pushed outward. The elastic arc plate 8 squeezed inside the shell 1 moves to the outside of the heat dissipation groove 7 due to its own elastic force. The elastic arc plate 8 pushes the metal rod 6 to move to the inside of the shell 1 to the initial position, thereby improving the heat dissipation capacity of the device. After the temperature inside the device rises, the heat can be automatically transferred to the outside for heat dissipation, thereby avoiding excessive temperature during the operation of the device.

[0032] Example 2

[0033] See also Figure 1-Figure 8 The present invention provides a technical solution: on the basis of embodiment 1, metal sheets 13 are fixedly connected to both sides of the airbag 11, and the metal sheets 13 penetrate the airbag 11 and extend to the interior of the airbag 11.

[0034] A transverse rod 14 is fixedly connected to one side of the metal sheet 13 away from the airbag 11 , and extension rods 15 are symmetrically installed on the outer side of the transverse rod 14 . Both the transverse rod 14 and the extension rod 15 are made of metal.

[0035] The top of the rubber pad 12 is symmetrically provided with sound absorbing grooves 16 , which penetrate the rubber pad 12 .

[0036] Sound-absorbing cotton 17 is slidably connected between the two sides of the inner wall of the sound-absorbing groove 16 , and the sound-absorbing cotton 17 extends to the outside of the sound-absorbing groove 16 .

[0037] An elastic rod 18 is fixedly connected to the inner bottom of the sound-absorbing groove 16 , a grid plate 19 is fixedly connected to the top of the elastic rod 18 , and the sound-absorbing cotton 17 is fixedly connected to the grid plate 19 .

[0038] One end of the metal rod 6 extending to the outside of the housing 1 is provided with a water cooling groove 20 , and the inner wall of the water cooling groove 20 is slidably connected with a spiral tube 21 , and the interior of the spiral tube 21 is filled with water.

[0039] One end of the spiral tube 21 extends to the outside of the water cooling tank 20, and the end of the spiral tube 21 extending to the outside of the water cooling tank 20 is fixedly connected to a support rod 22. The end of the support rod 22 away from the spiral tube 21 is fixedly connected to the shell 1, and heat dissipation holes 23 are evenly opened on the outside of the spiral tube 21.

[0040] When in use, the sound generated by the planetary gear reducer during operation is blocked by the airbag 11 and the rubber pad 12, and part of the sound is absorbed by the sound-absorbing groove 16 and the sound-absorbing cotton 17, thereby improving the sound insulation effect of the equipment and reducing the noise generated during the operation of the equipment.

[0041] When the temperature inside the airbag 11 rises, its volume expands, and the airbag 11 pushes the rubber pad 12 to squeeze the extension plate 9. The sound-absorbing cotton 17 and the airbag 11 are squeezed and deformed for buffering, which improves the buffering capacity of the equipment, can reduce the collision generated during the heat dissipation process of the equipment, and avoid the metal rod 6 from generating noise during the process of being pushed for heat dissipation.

[0042] The transverse rod 14, the extension rod 15 and the metal sheet 13 increase the contact area with the air inside the shell 1. When the planetary gear reducer generates heat during operation, it can quickly conduct heat to heat the air inside the inflatable bag 11, thereby improving the sensitivity of the device and being able to quickly start cooling down when the temperature rises during the operation of the device.

[0043] When the metal rod 6 is pushed to move outside the outer shell 1, the spiral tube 21 enters the water cooling tank 20, and the spiral tube 21 contacts the metal rod 6 for heat conduction. The water inside the spiral tube 21 is heated. When the metal rod 6 moves to the inside of the outer shell 1, the spiral tube 21 moves to the outside of the water cooling tank 20. After the spiral tube 21 is exposed to the air, the heat in the internal water is accelerated to dissipate into the air, which can speed up the heat dissipation speed of the equipment and improve the heat dissipation capacity of the equipment.

[0044] Obviously, 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 ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A low-noise and stable planetary gear reducer, comprising a housing (1), the housing (1) having mounting holes (2) symmetrically formed on its exterior, a sun gear (3), a planetary gear (4) and a ring gear (5) mounted inside the mounting holes (2), characterized in that: Metal rods (6) are evenly installed at positions near the sun gear (3) on the inner wall of the housing (1). The metal rods (6) penetrate the housing (1) and extend to the outside of the housing (1). The metal rods (6) are slidably connected to the housing (1). Heat dissipation grooves (7) are provided at both ends of the metal rods (6). An elastic arc plate (8) is fixedly connected to one side of the inner wall of the heat dissipation groove (7). The elastic arc plate (8) is made of metal. An extension disk (9) is fixedly connected to one end of the metal rod (6) located inside the housing (1). A limit ring (10) is fixedly connected to a position between the metal rods (6) inside the housing (1). An air bag (11) is sleeved on the outside of the limit ring (10). The air bag (11) extends to a position close to the metal rod (6). A rubber pad (12) is evenly installed on the outside of the air bag (11). The rubber pad (12) is fixedly connected to the extension disk (9).

2. A low-noise stable planetary gear reducer according to claim 1, characterized in that: Metal sheets (13) are fixedly connected to both sides of the inflatable bag (11); the metal sheets (13) penetrate the inflatable bag (11) and extend into the interior of the inflatable bag (11).

3. A low-noise stable planetary gear reducer according to claim 2, characterized in that: A transverse rod (14) is fixedly connected to the side of the metal sheet (13) away from the inflatable bag (11), and an extension rod (15) is symmetrically installed on the outer side of the transverse rod (14), and the transverse rod (14) and the extension rod (15) are both made of metal.

4. A low-noise stable planetary gear reducer according to claim 1, characterized in that: The top of the rubber pad (12) is symmetrically provided with sound absorbing grooves (16), and the sound absorbing grooves (16) penetrate the rubber pad (12).

5. A low-noise stable planetary gear reducer according to claim 4, characterized in that: Sound-absorbing cotton (17) is slidably connected between the two sides of the inner wall of the sound-absorbing groove (16), and the sound-absorbing cotton (17) extends to the outside of the sound-absorbing groove (16).

6. A low-noise stable planetary gear reducer according to claim 5, characterized in that: The inner bottom of the sound-absorbing groove (16) is fixedly connected to an elastic rod (18), the top of the elastic rod (18) is fixedly connected to a grid plate (19), and the sound-absorbing cotton (17) is fixedly connected to the grid plate (19).

7. A low-noise stable planetary gear reducer according to claim 1, characterized in that: One end of the metal rod (6) extending to the outside of the housing (1) is provided with a water cooling groove (20), the inner wall of the water cooling groove (20) is slidably connected with a spiral tube (21), and the interior of the spiral tube (21) is filled with water.

8. A low-noise stable planetary gear reducer according to claim 7, characterized in that: One end of the spiral tube (21) extends to the outside of the water cooling tank (20), the end of the spiral tube (21) extending to the outside of the water cooling tank (20) is fixedly connected to a support rod (22), the end of the support rod (22) away from the spiral tube (21) is fixedly connected to the outer shell (1), and the outside of the spiral tube (21) is evenly provided with heat dissipation holes (23).

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