Low-noise planetary reducer

Abstract

The invention discloses a low-noise planetary reducer and relates to the technical field of planetary reducers, the low-noise planetary reducer comprises a shell and a bottom plate, a connecting seat is mounted on the bottom surface of the shell, a vibration reduction box is mounted on the top surface of the bottom plate, dampers are mounted at four corners of the top surface of the vibration reduction box respectively, and the top ends of the dampers are connected with four corners of the bottom surface of the connecting seat; an elastic buffering mechanism is arranged in the vibration reduction box and comprises a first shaft rod and a second shaft rod, the first shaft rod and the second shaft rod are rotationally connected to the two sides of the interior of the vibration reduction box correspondingly, and the outer wall of the first shaft rod and the outer wall of the second shaft rod are connected with a gear and a torsional spring in a sleeving mode correspondingly. One end of the torsional spring is connected with one side of each gear, the other end of the torsional spring is connected with the inner wall of the vibration reduction box, toothed plates are slidably connected to the two sides of the interior of the vibration reduction box respectively, and the two toothed plates are meshed with the two gears respectively.

Description

Technical Field

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

[0002] Planetary reducers are widely used industrial products that can reduce the speed of motors while increasing output torque. Planetary reducers can be used as supporting components in industries such as lifting, excavation, transportation, and construction.

[0003] At present, the existing planetary reducers are usually fixed and put into use directly during assembly. Due to the lack of vibration reduction measures, the mechanical movement of the planetary reducer will generate vibration, thereby colliding with the metal and making noise; secondly, the existing planetary reducers are usually lubricated with solid grease, but since the solid grease will be consumed and cannot be observed in real time, once the lubrication effect is lacking, the mechanical structure inside the planetary reducer will also produce abnormal noise, resulting in a certain degree of noise. Summary of the invention

[0004] The object of the present invention is to provide a low-noise planetary reducer to solve the problems raised in the above background technology.

[0005] By adopting the above technical solution, the function of reducing noise is achieved.

[0006] In view of the above problems, the technical solution proposed by the present invention is: A low-noise planetary reducer comprises a shell and a bottom plate, a connecting seat is installed on the bottom surface of the shell, a vibration damping box is installed on the top surface of the bottom plate, dampers are installed at the four corners of the top surface of the vibration damping box respectively, the top of the damper is connected to the four corners of the bottom surface of the connecting seat, an elastic buffer mechanism is arranged inside the vibration damping box, the elastic buffer mechanism comprises a first shaft rod and a second shaft rod, the first shaft rod and the second shaft rod are respectively connected to the first shaft rod and the second shaft rod on both sides of the interior of the vibration damping box, a gear and a torsion spring are respectively connected to the outer wall of the first shaft rod and the second shaft rod, one end of the torsion spring is connected to one side of the gear, and the other end of the torsion spring is connected to the inner wall of the vibration damping box, tooth plates are respectively connected to the two sides of the interior of the vibration damping box, two tooth plates are respectively meshed with two gears, the tops of the two tooth plates are connected to the bottom surface of the connecting seat, a machine cover is arranged at one end of the shell, the machine cover comprises a cover body, a cylinder is connected to the interior of the cover body, a glass circular plate is installed on one side of the cylinder, and a sealing sleeve is inserted and connected at the center of the glass circular plate.

[0007] As a preferred technical solution of the present invention, the connecting seat includes a seat body, the four corners of the bottom surface of the seat body are respectively provided with holes, the top of the damper is located inside the holes, square openings are respectively provided on both sides of the bottom surface of the seat body, and the tops of the two tooth plates extend to the inside of the two square openings respectively.

[0008] As a preferred technical solution of the present invention, a plurality of hollow grooves are formed on the bottom surface of the seat body, and top ends of the plurality of hollow grooves extend to the top surface of the seat body.

[0009] As a preferred technical solution of the present invention, bolts are respectively inserted and connected to the sides of the cover body, and one end of the bolt passes through the cover body and is threadedly connected to the edge of the outer wall of the shell.

[0010] As a preferred technical solution of the present invention, a planetary gear assembly is provided inside the housing, an output shaft is transmission-connected at the center of the planetary gear assembly, and one end of the output shaft passes through the outside of the housing.

[0011] As a preferred technical solution of the present invention, an input shaft is rotatably connected inside the sealing sleeve, one end of the input shaft extends to the inside of the housing and is drivingly connected to one side of the planetary gear assembly.

[0012] As a preferred technical solution of the present invention, the outer wall of the shell is provided with a plurality of heat dissipation spacers, and air flow channels are provided between the plurality of heat dissipation spacers.

[0013] As a preferred technical solution of the present invention, the heat dissipation spacer includes an arc-shaped strip block, the outer wall of the shell is interspersed with the arc-shaped strip block, one side of the arc-shaped strip block is connected to a sealing plate, and one side of the sealing plate is connected to the inner wall of the shell.

[0014] As a preferred technical solution of the present invention, one end of the first shaft is connected to a rotating joint, and the first shaft is rotatably connected to one end of the second shaft via the rotating joint.

[0015] In another aspect, the present invention provides a method for using a low-noise planetary reducer, comprising the following steps: Step 1: Separate the housing and the cover to make one side of the housing open, and inject a sufficient amount of lubricating oil into the housing until the planetary gear assembly is completely immersed. Then connect the cover with the glass disc to the housing, and tighten the bolts to seal the cover and the housing. Ensure that the lubricating oil inside the planetary reducer always immerses the planetary gear assembly by observing the glass disc. Step 2: Connect the driving device to the input shaft of the planetary reducer, and connect the output end of the planetary reducer to the device to be driven. At the same time, keep the planetary reducer in a horizontal state, and fix the bottom plate in the current area by using fasteners, wherein the shell is connected with the elastic buffer mechanism and the damper through the connecting seat, so that the shell can maintain the vertical activity space, and the two tooth plates are pressed down so that the gears meshing with them rotate on the outer walls of the first shaft and the second shaft respectively, and then the torsion spring is used to apply torque to the gear, thereby slowing down the speed of the tooth plate moving up and down, and then the telescopic effect of the damper is used to reduce the vibration of the planetary gear assembly operating inside the shell; Step three: By continuously maintaining the operation of the planetary reducer, it will generate a certain amount of heat. Through the arrangement of the heat dissipation strips, the outer wall of the shell forms an air flow channel that can accelerate the heat exchange, and through the hollow grooves opened in the seat body, the bottom of the shell is also kept in contact with the outside air, and the air flow is discharged along the gap between the connecting seat and the vibration damping box, thereby completing the heat dissipation treatment of the planetary reducer.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Through the coordinated use of the damper and the elastic buffer mechanism, the planetary reducer can reduce vibration, thereby achieving the effect of reducing noise. Specifically, the outer shell is driven to perform lifting and lowering movements through the connecting seat, so that the two tooth plates can realize up and down movements inside the shock absorbing box, and the meshing connection relationship between the tooth plates and the gears is utilized to make the two gears rotate on the outer walls of the first shaft rod and the second shaft rod respectively, and then the torsion spring is used to apply torque to the gears, thereby slowing down the speed of the up and down movement of the tooth plates, and then the telescopic effect of the damper is used to reduce vibration of the planetary gear assembly operating inside the outer shell; secondly, by observing the glass circular plate, it is possible to know the content of lubricating oil inside the outer shell in real time, and keep the lubricating oil submerged in the planetary gear assembly, to avoid mechanical wear and abnormal noise caused by lubrication, thereby achieving the effect of reducing noise again. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a low-noise planetary reducer provided by the present invention; Figure 2 A schematic diagram of a low-noise planetary reducer provided by the present invention; Figure 3 A bottom view of a connecting seat of a low-noise planetary reducer provided by the present invention; Figure 4 A schematic diagram of the expansion structure of a cover of a low-noise planetary reducer provided by the present invention; Figure 5 A schematic diagram of a heat dissipation spacer of a low-noise planetary reducer provided by the present invention; Figure 6 A schematic diagram of an elastic buffer mechanism of a low-noise planetary reducer provided by the present invention.

[0018] In the figure: 100, outer shell; 200, bottom plate; 300, connecting seat; 3001, seat body; 3002, hole; 3003, square mouth; 3004, hollow groove; 400, vibration damping box; 500, damper; 600, machine cover; 6001, cover body; 6002, cylinder; 6003, glass circular plate; 6004, sealing sleeve; 6005, bolt; 700, heat dissipation spacer; 7001, arc-shaped strip; 7002, sealing plate; 800, planetary gear assembly; 900, elastic buffer mechanism; 9001, first shaft rod; 9002, second shaft rod; 9003, rotary joint; 9004, gear; 9005, torsion spring; 9006, gear plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 6 The present invention provides a technical solution: a low-noise planetary reducer, including a housing 100 and a bottom plate 200, a connecting seat 300 is installed on the bottom surface of the housing 100, a vibration reduction box 400 is installed on the top surface of the bottom plate 200, dampers 500 are installed at the four corners of the top surface of the vibration reduction box 400, the top of the damper 500 is connected to the four corners of the bottom surface of the connecting seat 300, an elastic buffer mechanism 900 is arranged inside the vibration reduction box 400, and the elastic buffer mechanism 900 includes a first shaft rod 9001 and a second shaft rod 9002, the first shaft rod 9001 and the second shaft rod 9002 are rotatably connected on both sides of the interior of the vibration reduction box 400, and the outer walls of the first shaft rod 9001 and the second shaft rod 9002 are respectively sleeved and connected. A gear 9004 and a torsion spring 9005 are connected, one end of the torsion spring 9005 is connected to one side of the gear 9004, and the other end of the torsion spring 9005 is connected to the inner wall of the vibration damping box 400, and tooth plates 9006 are slidably connected to the two sides of the interior of the vibration damping box 400, respectively, and the two tooth plates 9006 are respectively meshed with the two gears 9004, and the tops of the two tooth plates 9006 are connected to the bottom surface of the connecting seat 300, and a machine cover 600 is provided at one end of the outer shell 100, and the machine cover 600 includes a cover body 6001, and a cylinder 6002 is connected to the interior of the cover body 6001, and a glass circular plate 6003 is installed on one side of the cylinder 6002, and a sealing shaft sleeve 6004 is inserted and connected at the center of the glass circular plate 6003.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Among them, the connecting seat 300 includes a seat body 3001, and holes 3002 are respectively opened at the four corners of the bottom surface of the seat body 3001. The top of the damper 500 is located inside the hole 3002. Square openings 3003 are respectively opened on both sides of the bottom surface of the seat body 3001. The tops of the two tooth plates 9006 extend to the inside of the two square openings 3003 respectively. Through the setting of the hole 3002, it provides a precise docking position for the top of the damper 500, and through the setting of the square opening 3003, it provides a position space for the connection of the tooth plate 9006.

[0023] The bottom surface of the seat body 3001 is provided with a plurality of hollow grooves 3004, the top ends of which extend to the top surface of the seat body 3001. The extension of the hollow grooves 3004 allows the bottom of the housing (100) to be in contact with the airflow.

[0024] Among them, bolts 6005 are respectively inserted and connected to the sides of the cover body 6001, one end of the bolt 6005 passes through the cover body 6001 and is threadedly connected to the outer wall edge of the shell 100. The bolt 6005 is used to connect and form a detachable connection between the cover body 6001 and the shell 100.

[0025] Among them, a planetary gear assembly 800 is provided inside the shell 100, and an output shaft is transmission-connected at the center of the planetary gear assembly 800. One end of the output shaft passes through the outside of the shell 100. Through the combination of multiple gears of different sizes in the planetary gear assembly 800, the high-speed rotation of the input shaft is converted into the low-speed rotation of the output shaft.

[0026] The sealing sleeve 6004 is rotatably connected to an input shaft, one end of which extends to the inside of the housing 100 and is drivingly connected to one side of the planetary gear assembly 800 .

[0027] The outer wall of the housing 100 is provided with a plurality of heat dissipation ribs 700 , and air flow channels are provided between the plurality of heat dissipation ribs 700 . The provision of the air flow channels facilitates heat dissipation between the heat dissipation ribs 700 .

[0028] Among them, the heat dissipation spacer 700 includes an arc-shaped strip 7001, the outer wall of the outer shell 100 is inserted and connected with the arc-shaped strip 7001, one side of the arc-shaped strip 7001 is connected with a sealing plate 7002, and one side of the sealing plate 7002 is connected to the inner wall of the outer shell 100. The connection and use of the sealing plate 7002 facilitates the improvement of the sealing between the arc-shaped strip 7001 and the outer shell 100.

[0029] Among them, one end of the first shaft rod 9001 is connected to a rotating joint 9003, and the first shaft rod 9001 is rotatably connected to one end of the second shaft rod 9002 through the rotating joint 9003. The first shaft rod 9001 and the second shaft rod 9002 can rotate relative to each other through the connection of the rotating joint 9003.

[0030] Specifically, the working principle of this low-noise planetary reducer is: Step 1: First, separate the housing 100 and the cover 600 so that one side of the housing 100 is open, and inject a sufficient amount of lubricating oil into the housing until the planetary gear assembly 800 is completely immersed, then connect the cover 6001 carrying the glass circular plate 6003 to the housing 100, and tighten the bolts 6005 to seal the cover 600 and the housing 100, and ensure that the lubricating oil inside the planetary reducer always immerses the planetary gear assembly 800 by observing the glass circular plate 6003; Step 2: Connect the driving device to the input shaft of the planetary reducer, and connect the output end of the planetary reducer to the device to be driven. Meanwhile, keep the planetary reducer in a horizontal state, and fix the base plate 200 in the current area by using fasteners, wherein the housing 100 is connected to the elastic buffer mechanism 900 and the damper 500 through the connecting seat 300, so that the housing 100 can maintain the vertical activity space, and the two tooth plates 9006 are pressed down to make the gear 9004 meshing with them rotate on the outer wall of the first shaft 9001 and the second shaft 9002 respectively, and then cooperate with the torsion spring 9005 to apply torque to the gear 9004, so as to slow down the speed of the tooth plate 9006 moving up and down, and cooperate with the telescopic effect of the damper 500, so that the planetary gear assembly 800 operating inside the housing 100 can reduce vibration; Step three: By continuously maintaining the operation of the planetary reducer, it will generate a certain amount of heat. Through the arrangement of the heat dissipation strips 700, the outer wall of the outer shell 100 constitutes an air flow channel that can accelerate heat exchange, and through the hollow groove 3004 opened in the seat body 3001, the bottom of the outer shell 100 is also kept in contact with the outside air, and the air flow is discharged along the gap between the connecting seat 300 and the vibration damping box 400, thereby completing the heat dissipation treatment of the planetary reducer.

Claims

1. A low-noise planetary reducer, characterized in that: The invention comprises a shell (100) and a bottom plate (200), wherein a connecting seat (300) is installed on the bottom surface of the shell (100), a vibration damping box (400) is installed on the top surface of the bottom plate (200), dampers (500) are installed at the four corners of the top surface of the vibration damping box (400), the top of the damper (500) is connected to the four corners of the bottom surface of the connecting seat (300), an elastic buffer mechanism (900) is provided inside the vibration damping box (400), the elastic buffer mechanism (900) comprises a first shaft (9001) and a second shaft (9002), the first shaft (9001) and the second shaft (9002) are rotatably connected on both sides of the inside of the vibration damping box (400), and the outer walls of the first shaft (9001) and the second shaft (9002) are respectively sleeved and connected with a gear (9004) and a torsion spring (9005). One end of the torsion spring (9005) is connected to one side of the gear (9004), and the other end of the torsion spring (9005) is connected to the inner wall of the vibration damping box (400). Tooth plates (9006) are slidably connected to the two sides of the interior of the vibration damping box (400). The two tooth plates (9006) are respectively meshed with the two gears (9004). The top ends of the two tooth plates (9006) are connected to the bottom surface of the connecting seat (300). A machine cover (600) is provided at one end of the housing (100). The machine cover (600) includes a cover body (6001). A cylinder (6002) is sleeved and connected to the interior of the cover body (6001). A glass circular plate (6003) is installed on one side of the cylinder (6002). A sealing shaft sleeve (6004) is inserted and connected at the center of the glass circular plate (6003).

2. The low noise planetary reducer according to claim 1, characterized in that: The connecting seat (300) comprises a seat body (3001), the bottom surface of the seat body (3001) is respectively provided with holes (3002) at four corners, the top end of the damper (500) is located inside the hole (3002), the bottom surface of the seat body (3001) is respectively provided with square openings (3003), and the top ends of the two tooth plates (9006) extend to the inside of the two square openings (3003) respectively.

3. The low noise planetary reducer according to claim 2, characterized in that: The bottom surface of the seat body (3001) is provided with a plurality of hollow grooves (3004), and the top ends of the plurality of hollow grooves (3004) extend to the top surface of the seat body (3001).

4. The low noise planetary reducer according to claim 1, characterized in that: Bolts (6005) are respectively inserted and connected to the sides of the cover body (6001), and one end of the bolt (6005) passes through the cover body (6001) and is threadedly connected to the edge of the outer wall of the outer shell (100).

5. The low noise planetary reducer according to claim 1, characterized in that: A planetary gear assembly (800) is provided inside the housing (100), and an output shaft is drivingly connected at the center of the planetary gear assembly (800), with one end of the output shaft penetrating to the outside of the housing (100).

6. The low noise planetary reducer according to claim 5, characterized in that: An input shaft is rotatably connected inside the sealing sleeve (6004), one end of the input shaft extends into the interior of the housing (100) and is drivingly connected to one side of the planetary gear assembly (800).

7. The low noise planetary reducer according to claim 1, characterized in that: The outer wall of the housing (100) is provided with a plurality of heat dissipation spacers (700), and air flow channels are provided between the plurality of heat dissipation spacers (700).

8. The low noise planetary reducer according to claim 7, characterized in that: The heat dissipation spacer (700) comprises an arc-shaped strip block (7001), the outer wall of the outer shell (100) is interlaced with the arc-shaped strip block (7001), one side of the arc-shaped strip block (7001) is connected to a sealing plate (7002), and one side of the sealing plate (7002) is connected to the inner wall of the outer shell (100).

9. The low noise planetary reducer according to claim 1, characterized in that: One end of the first shaft rod (9001) is connected to a rotating joint (9003), and the first shaft rod (9001) is rotatably connected to one end of the second shaft rod (9002) via the rotating joint (9003).

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