A pin tooth housing structure for a cycloidal pinwheel reducer

Abstract

This utility model belongs to the field of cycloidal pinwheel reducer production, and relates to a pin gear housing structure for a cycloidal pinwheel reducer. It includes a pin gear housing shell, with wheel discs on both sides. Bolt holes are circumferentially formed on the outer edges of both wheel discs. An installation groove is formed on the outer surface of the pin gear housing shell, and a pump box is fixedly connected to the inner side of the installation groove. An external oil pipe is inserted and fixedly connected to one end of the pump box. A driving gear and a driven gear are rotatably mounted on the inner side of the pump box. Lubricating oil enters and impacts the guide bridge, flowing to both sides along the inner groove of the pin gear housing shell and forming a conveying channel with the inner ring of the pin gear. As the lubricating oil flows, it gradually enters the inlet, passes through the permeation mesh, and when the high and low speed input shafts drive the pin gears to rotate, it abuts against the pin wheel pin sleeve, thereby uniformly lubricating the pin gears, i.e., the components inside the pin gear housing shell, ensuring a uniform distribution of lubricating oil within the housing.

Description

Technical Field

[0001] This utility model belongs to the field of cycloidal pinwheel reducer production and relates to a pin tooth housing structure for a cycloidal pinwheel reducer. Background Technology

[0002] The cycloidal pinwheel reducer is a novel transmission device that applies the planetary transmission principle and uses cycloidal pin gear meshing. The entire transmission device of the cycloidal pinwheel reducer can be divided into three parts: the input part, the reduction part, and the output part.

[0003] When using a cycloidal pinwheel reducer, lubricating oil is replenished by unscrewing the vent cap on the pin gear housing while the reducer is running and using a grease gun to press lubricating oil into the vent cap hole. The pressure of the grease gun is manually applied, and improper control of the force can lead to uneven distribution of lubricating oil, resulting in too much or too little lubricating oil in the internal parts. Insufficient lubrication in the pin gear area will cause dry friction, and the traditional oil circuit design is unreasonable, causing local temperature rise and increasing the heat dissipation burden. Utility Model Content

[0004] The technical problem this utility model aims to solve is that when using a cycloidal pinwheel reducer, the lubricating oil is replenished by unscrewing the vent cap of the pin gear housing while the reducer is running and using a grease gun to press lubricating oil into the vent cap hole. The pressure of the grease gun relies on manual injection, and improper force control can lead to uneven distribution of lubricating oil, resulting in too much or too little lubricating oil in the internal components. Insufficient lubrication at the pin gear area can cause dry friction. Furthermore, the traditional oil circuit design is unreasonable, causing localized temperature increases and increasing the heat dissipation burden. This includes the pin gear housing, on both sides of which are equipped with wheel discs. Each of the aforementioned wheel discs has bolt holes annularly formed along its outer edge. The outer surface of the needle tooth box shell has a mounting groove, and a pump box is fixedly connected to the inner side of the mounting groove. An external oil pipe is inserted and fixedly connected to one end of the pump box. A driving gear one and a driven gear two are rotatably mounted on the inner side of the pump box, and the driving gear one and the driven gear two mesh with each other. An internal oil pipe is inserted at the other end of the pump box. A needle tooth inner ring is mounted on the inner side of the needle tooth box shell via a bearing. Several through-holes are annularly formed in the middle of the needle tooth inner ring, and a permeable mesh is provided on the inner side of each of the several through-holes.

[0005] In this invention, both the driving gear one and the driven gear two have a central shaft inserted through their middle parts, and the central shaft of the driving gear one extends through the pump box to the outside.

[0006] The outer surface of the needle box shell of this utility model is equipped with a micro servo motor, and the output shaft of the micro servo motor is fixedly connected to the central shaft.

[0007] The inner wall of the inner ring of the needle teeth in this invention is connected with multiple positioning pins at equal intervals in a ring. A needle wheel pin is rotatably installed between the positioning pins on both sides, and a needle wheel pin sleeve is fixedly fitted on the outer surface of each needle wheel pin.

[0008] The high and low speed input shafts are inserted and installed in the middle of the inner side of the needle gear box shell of this utility model. Two needle gears are fitted on the outer surface of the high and low speed input shafts, and both needle gears are used in conjunction with the needle wheel pin sleeve.

[0009] A one-way valve is inserted and installed on the outer surface of the needle box shell of this utility model, and an air inlet pipe is fixedly connected to the outer surface of the one-way valve.

[0010] The outer wall of the inner ring of the needle teeth in this invention is provided with a guide bridge.

[0011] The lifting mechanism of this utility model includes an electric threaded rod, which is installed inside the mounting housing. The threaded end of the electric threaded rod is located in the inner cavity of the outer rod and is threadedly connected to the inner rod.

[0012] The outer surface of the inner rod of this invention is welded with a limiting block, and the inner surface of the outer rod is provided with a limiting groove, in which the limiting block is slidably connected.

[0013] A mounting base is welded onto the lower surface of the mounting shell of this utility model.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the lubricating oil delivered under pressure impacts and contacts the guide bridge, and flows to both sides along the inner groove of the needle gear box shell and the inner ring of the needle gear to form a conveying channel. When the lubricating oil flows, it gradually enters the inlet, and then enters the interior of the needle gear shell through the permeation mesh. When the high and low speed input shaft drives the needle gear to rotate, it abuts against the needle wheel pin sleeve, thereby uniformly lubricating the needle gear, that is, the components inside the needle gear box shell, and ensuring the uniform distribution of lubricating oil in the gear shell. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the needle tooth box shell and pump box according to an embodiment of the present invention;

[0017] Figure 3 This is a half-sectional structural diagram of the needle-tooth box shell according to an embodiment of the present invention;

[0018] Figure 4 This is a top view of an embodiment of the present invention.

[0019] In the diagram: 1. Needle gear housing; 2. High and low speed input shafts; 3. Needle gear; 4. Wheel disc; 6. Bolt hole; 7. One-way valve; 8. Air inlet pipe; 9. Miniature servo motor; 10. Pump box; 11. External oil pipe; 12. Internal oil pipe; 13. Mounting slot; 14. Through port; 15. Permeable mesh; 16. Needle wheel pin sleeve; 17. Positioning pin; 18. Needle gear inner ring; 19. Needle wheel pin; 20. Guide bridge; 21. Central shaft; 22. Drive gear one; 23. Driven gear two. Detailed Implementation

[0020] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0021] like Figures 1 to 4 As shown, a pin gear housing structure for a cycloidal pinwheel reducer includes a pin gear housing shell 1. Two discs 4 are provided on both sides of the pin gear housing shell 1. Bolt holes 6 are circumferentially formed along the outer edges of both discs 4. A mounting groove 13 is formed on the outer surface of the pin gear housing shell 1. A pump box 10 is fixedly connected to the inner side of the mounting groove 13. An external oil pipe 11 is inserted and fixedly connected to one end of the pump box 10. A driving gear 22 and a driven gear 23 are rotatably mounted on the inner side of the pump box 10, meshing with each other. An internal... The oil pipe 12 and the inner side of the needle tooth box shell 1 are mounted with a needle tooth inner ring 18 through a bearing. The needle tooth inner ring 18 has several openings 14 in the middle. The inner side of each of the several openings 14 is provided with a permeable mesh 15. The outer surface of the needle tooth box shell 1 is mounted with a micro servo motor 9. The middle shaft 21 is inserted and installed in the middle of the driving gear 1 22 and the driven gear 23. The middle shaft 21 in the middle of the driving gear 1 22 extends through the pump box 10 to the outside. The output shaft of the micro servo motor 9 is fixedly connected to the middle shaft 21. The outer wall of the needle tooth inner ring 18 is provided with a guide bridge 20.

[0022] In Example 1, the lubricating oil is periodically circulated and added through the pump box 10 installed on the outer shell 1 of the needle tooth housing structure. The external oil pipe is connected to the external oil pipe 11, and the micro servo motor 9 drives the central shaft 21 to rotate, thereby driving the drive gear 22 to rotate, which in turn drives the meshing driven gear 23 to rotate as well. This allows the external lubricating oil to be sent out into the inner oil pipe 12. The lubricating oil is then pressurized and pushed into the outer shell 1 of the needle tooth housing from the inner oil pipe 12. This system can automatically pressurize and push in the lubricating oil, and can also discharge the lubricating oil cleaning fluid, which is convenient for the next lubricating oil addition. The circulation effect is good.

[0023] like Figure 1 - Figure 3As shown, multiple positioning pins 17 are equidistantly connected to the inner wall of the inner ring 18 of the needle teeth. A needle wheel pin 19 is rotatably installed between the positioning pins 17 on both sides. A needle wheel pin sleeve 16 is fixedly fitted on the outer surface of each needle wheel pin 19. A high-speed and low-speed input shaft 2 is inserted and installed in the middle of the inner side of the needle tooth box shell 1. Two needle gears 3 are fitted on the outer surface of the high-speed and low-speed input shaft 2. Both needle gears 3 are used in conjunction with the needle wheel pin sleeve 16.

[0024] In Example 2, the penetrating mesh 15 enters the interior of the needle gear housing and contacts the needle wheel pin sleeve 16 when the high and low speed input shaft 2 drives the needle gear 3 to rotate, thereby uniformly lubricating the components inside the needle gear 3, which is the needle gear housing 1.

[0025] like Figure 1 - Figure 2 As shown, a one-way valve 7 is inserted and installed on the outer surface of the needle box shell 1, and an air inlet pipe 8 is fixedly connected to the outer surface of the one-way valve 7.

[0026] In Example 3, according to the actual ambient temperature, a cold or hot air duct is connected to the air inlet duct 8, and then the air is sent in through the one-way valve 7, which facilitates temperature control of the reducer and lubricating oil and improves the operating quality.

[0027] Working principle: When the cycloidal pinwheel reducer is in use, the pump box 10 installed on the pin gear housing 1 in the pin gear shell structure adds lubricating oil in a timed cycle. The external oil pipe is connected to the external oil pipe 11. The micro servo motor 9 is turned on by the external controller. The micro servo motor 9 drives the central shaft 21 to rotate, thereby driving the first drive gear 22 to rotate, which in turn drives the meshing driven gear 23 to rotate. This causes the external lubricating oil to be sent to the inner oil pipe 12. The lubricating oil is pressurized from the inner oil pipe 12 and pushed into the pin gear housing 1. After entering, the lubricating oil impacts and contacts the guide bridge 20, and flows to both sides along the inner groove of the pin gear housing 1 and the inner ring 18 of the pin gear. A conveying channel is formed, and when the lubricating oil flows, it gradually enters the inlet 14, then passes through the permeation mesh 15 and enters the interior of the pin gear housing. When the high and low speed input shaft 2 drives the pin gear 3 to rotate, it abuts against the pin wheel pin sleeve 16, thereby uniformly lubricating the components inside the pin gear 3, which is the pin gear housing 1. According to the actual ambient temperature, cold or hot air pipes are connected to the air inlet pipe 8, and then the air is sent in through the one-way valve 7, which facilitates temperature control of the reducer and lubricating oil, improves the operating quality, helps to improve the lubricating oil circulation and addition effect, ensures the uniform distribution of lubricating oil in the gear housing, and can remove heat through the oil circuit design of the pin gear housing, improving the heat dissipation effect.

[0028] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A pin gear housing structure for a cycloidal speed reducer, characterized by: The device includes a needle-tooth box shell (1), on both sides of which are provided a wheel (4). Bolt holes (6) are provided on the outer edges of the two wheel (4). An installation groove (13) is provided on the outer surface of the needle-tooth box shell (1). A pump box (10) is fixedly connected to the inner side of the installation groove (13). An external oil pipe (11) is inserted and fixedly connected to one end of the pump box (10). A drive gear one (22) and a driven gear two (23) are rotatably installed on the inner side of the pump box (10). The drive gear one (22) and the driven gear two (23) mesh with each other. An internal oil pipe (12) is inserted at the other end of the pump box (10). A needle-tooth inner ring (18) is installed on the inner side of the needle-tooth box shell (1) through a bearing. Several through-holes (14) are provided in the middle of the needle-tooth inner ring (18). A permeable mesh (15) is provided on the inner side of each of the several through-holes (14).

2. The pin tooth housing structure for a cycloidal pinwheel reducer according to claim 1, characterized in that: Both the driving gear one (22) and the driven gear two (23) have a central shaft (21) inserted in the middle. The central shaft (21) in the middle of the driving gear one (22) extends to the outside through the pump box (10).

3. The pin tooth housing structure for a cycloidal pinwheel reducer according to claim 2, characterized in that: A micro servo motor (9) is installed on the outer surface of the needle box shell (1), and the output shaft of the micro servo motor (9) is fixedly connected to the central shaft (21).

4. The pin tooth housing structure for a cycloidal pinwheel reducer according to claim 1, characterized in that: The inner wall of the needle tooth inner ring (18) is connected with multiple positioning pins (17) at equal intervals in a ring. A needle wheel pin (19) is inserted and rotated between the positioning pins (17) on both sides. A needle wheel pin sleeve (16) is fixedly fitted on the outer surface of each needle wheel pin (19).

5. The pin tooth housing structure for a cycloidal pinwheel reducer according to claim 1, characterized in that: A high-speed and low-speed input shaft (2) is inserted and installed in the middle of the inner side of the needle gear box housing (1). Two needle gears (3) are fitted on the outer surface of the high-speed and low-speed input shaft (2). Both needle gears (3) are used in conjunction with the needle wheel pin sleeve (16).

6. The pin tooth housing structure for a cycloidal pinwheel reducer according to claim 1, characterized in that: A one-way valve (7) is inserted and installed on the outer surface of the needle box shell (1), and an air inlet pipe (8) is fixedly connected to the outer surface of the one-way valve (7).

7. The pin tooth housing structure for a cycloidal pinwheel reducer according to claim 1, characterized in that: The outer wall of the needle inner ring (18) is provided with a guide bridge (20).

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