Self-lubricating structure for gear reducer

Abstract

The self-lubricating structure comprises a shell and a cover body, a shaft rod and a gear which are matched with each other are connected to the inner side of the shell and the inner side of the cover body, and clamping grooves are formed in the front side and the rear side of the shell and the front side and the rear side of the cover body respectively. The shaft rod penetrates through the clamping groove to be connected with the outside. A circulating groove is formed in the inner side of the shell; an annular groove communicated with the circulating groove is formed in the lower end of the clamping groove; a window communicated with the clamping groove is formed in the upper end of the annular groove; a plurality of balls are clamped in the annular groove; the diameter of the ball is larger than the length of the short axis of the window. One end of the ball penetrates through the window to the inner side of the clamping groove and is slidably connected with the shaft rod. The circulating groove and the annular groove are formed in the shell, the balls are arranged in the annular groove to be connected with the shaft rod, lubricating oil is input through the oil inlet, the lubricating oil moves towards the two sides along with the circulating groove into the annular groove, the shaft rod and the clamping groove are in lubricating connection, abrasion between the shaft rod and the shell is reduced, and meanwhile the shell is prevented from being clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of gear reducers, in particular to a self-lubricating structure for a gear reducer. Background Art

[0002] A reducer is a self-contained component consisting of a gear transmission, worm drive, and gear-worm drive enclosed in a rigid housing. It is commonly used as a reduction transmission device between the prime mover and the working machine. While the gears within the reducer transmit power to each other, the shafts on the multiple gear sets rotate with the housing. Long-term use can cause wear, resulting in a gap between the shaft and the housing, which can affect the transmission within the reducer and easily draw debris into the body, affecting its operation. Utility Model Content

[0003] The purpose of the utility model is to solve the problems in the prior art and to propose a self-lubricating structure for a gear reducer.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A self-lubricating structure for a gear reducer includes a shell and a cover body, wherein the inner sides of the shell and the cover body are connected to a shaft rod and a gear that cooperate with each other, and the front and rear sides of the shell and the cover body are provided with a slot; the shaft rod passes through the slot and is connected to the outside; the inner side of the shell is provided with a circulation groove; the lower end of the slot is provided with an annular groove communicating with the circulation groove; the upper end of the annular groove is provided with a window communicating with the slot; a number of balls are clamped in the annular groove; the diameter of the ball is larger than the short axis length of the window; one end of the ball passes through the window to the inside of the slot and is slidably connected to the shaft rod; the two ends of the shell are also respectively provided with an oil inlet and an oil outlet communicating with the circulation groove.

[0006] Preferably, sealing rings are provided at both ends of the shaft; and the sealing rings are in contact with the housing.

[0007] Preferably, the upper end of the shell is connected with a protrusion; the lower end of the cover is provided with a groove matching the protrusion; the cover is plugged into the shell through the protrusion.

[0008] Preferably, the outer sides of the shell and the cover are further connected with ear plates; the ear plates are provided with interconnected threaded holes; and the shell and the cover are fixedly connected via the ear plates.

[0009] Preferably, the upper end of the cover is connected to a pipe; the inner side of the cover is also connected to a frame; a cavity is provided in the frame; and the lower end of the pipe is communicated with the cavity; and a through hole is provided at the lower end of the frame that is communicated with the cavity.

[0010] Preferably, there are a plurality of through holes, and the through holes are arranged at the upper end of the gear; a through slot is further provided at the lower end of the housing; and a blocking block is inserted into the through slot.

[0011] Compared with the prior art, the present invention provides a self-lubricating structure for a gear reducer, which has the following beneficial effects:

[0012] The self-lubricating structure for the gear reducer is provided with a circulation groove and an annular groove in the housing, and a ball is provided in the annular groove to connect the shaft rod, so that the shaft rod and the ball are rotationally connected to reduce friction between them, and at the same time, lubricating oil is input through the oil inlet, and the lubricating oil moves to both sides of the circulation groove into the annular groove, lubricating the connection between the shaft rod and the groove, reducing wear between the shaft rod and the housing, and preventing jamming; and the housing and the cover body are detachably connected to ensure their tightness while facilitating cleaning and maintenance of the gears inside the housing; at the same time, in order to prevent wear and jamming between the gears, a pipe and a frame are provided at the upper end of the cover body, so that the lubricating oil input in the pipe can flow to the upper end of the gear, lubricating the transmission between the gears, and ensuring the smooth operation of the reducer as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure inside the shell of the utility model;

[0015] Figure 3 This is a schematic structural diagram of the housing of the utility model;

[0016] Figure 4 It is a cross-sectional view of the housing of the utility model;

[0017] Figure 5 This is a schematic diagram of the internal structure of the circulation tank of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the cover body of the utility model.

[0019] In the figure: 10, housing; 11, cover; 12, shaft; 13, gear; 14, slot; 21, flow slot; 22, annular groove; 23, window; 24, ball bearing; 25, oil inlet; 26, oil outlet; 27, sealing ring; 31, bump; 32, groove; 33, ear plate; 34, threaded hole; 41, pipe; 42, frame; 43, cavity; 44, through hole; 45, through slot. DETAILED DESCRIPTION

[0020] The following will refer to Figure 1-6, the specific embodiment of the self-lubricating structure for a gear reducer in the utility model is introduced. A self-lubricating structure for a gear reducer includes a shell 10 and a cover body 11, the inner sides of the shell 10 and the cover body 11 are connected with a shaft rod 12 and a gear 13 that cooperate with each other, and the shell 10 and the cover body 11 are provided with a card slot 14 on the front and rear sides; the shaft rod 12 passes through the card slot 14 and is connected to the outside; the inner side of the shell 10 is provided with a circulation groove 21; the lower end of the card slot 14 is provided with an annular groove 22 communicating with the circulation groove 21; the upper end of the annular groove 22 is provided with a window 23 communicating with the card slot 14; a number of balls 24 are clamped in the annular groove 22; the diameter of the ball 24 is larger than the short axis length of the window 23; one end of the ball 24 passes through the window 23 to the inner side of the card slot 14 and is slidably connected to the shaft rod 12; the two ends of the shell 10 are respectively provided with an oil inlet 25 and an oil outlet 26 communicating with the circulation groove 21. Lubricating oil is input through the oil inlet 25 , and moves along the circulation groove 21 to both sides into the annular groove 22 , lubricating the connection between the shaft 12 and the clamping groove 14 to prevent the connection between the shaft 12 and the housing 10 from getting stuck.

[0021] In order to prevent oil leakage from the outer side of the lift, sealing rings 27 are sleeved on both ends of the shaft 12 ; the sealing rings 27 are in contact with the housing 10 .

[0022] To facilitate a tight connection between the housing 10 and the cover 11, a protrusion 31 is connected to the upper end of the housing 10; a groove 32 is provided at the lower end of the cover 11 to match the protrusion 31; the cover 11 is plugged into the housing 10 via the protrusion 31; and lugs 33 are also connected to the outsides of the housing 10 and cover 11; these lugs 33 have interconnecting threaded holes 34, and the housing 10 and cover 11 are fixedly connected via the lugs 33. The detachable connection between the housing 10 and cover 11 facilitates cleaning and maintenance of the shaft 12 and gear 13 inside the housing.

[0023] To facilitate lubrication of the gear 13 inside the housing, a pipe 41 is connected to the upper end of the cover 11. A frame 42 is also connected to the inside of the cover 11. A cavity 43 is defined within the frame 42. The lower end of the pipe 41 communicates with the cavity 43. A through-hole 44 is defined at the lower end of the frame 42, communicating with the cavity 43. Multiple through-holes 44 are provided, each located at the upper end of the gear 13. A through-slot 45 is also defined at the lower end of the housing 10. A block is inserted into the through-slot 45. After lubricating oil is introduced through the pipe 41, it flows out of the through-hole 44 onto the gear 13, lubricating the gear 13 and preventing damage from transmission friction between the gears 13.

Claims

1. A self-lubricating structure for a gear reducer, comprising a housing (10) and a cover (11), wherein the housing (10) and the cover (11) are connected to the inner sides of a shaft (12) and a gear (13) that cooperate with each other, characterized in that: The housing (10) and the cover (11) are both provided with a card slot (14) on both the front and rear sides; the shaft (12) passes through the card slot (14) and is connected to the outside; a circulation groove (21) is provided on the inner side of the housing (10); an annular groove (22) communicating with the circulation groove (21) is provided at the lower end of the card slot (14); a window (23) communicating with the card slot (14) is provided at the upper end of the annular groove (22); a plurality of balls (24) are clamped in the annular groove (22); the diameter of the balls (24) is larger than the short axis length of the window (23); one end of the balls (24) passes through the window (23) to the inner side of the card slot (14) and is slidably connected to the shaft (12); and an oil inlet (25) and an oil outlet (26) communicating with the circulation groove (21) are respectively provided at both ends of the housing (10).

2. The self-lubricating structure for a gear reducer according to claim 1, characterized in that: Sealing rings (27) are sleeved on both ends of the shaft (12); the sealing rings (27) are in contact with the housing (10).

3. The self-lubricating structure for a gear reducer according to claim 1, characterized in that: The upper end of the shell (10) is connected with a protrusion (31); the lower end of the cover (11) is provided with a groove (32) matching the protrusion (31); the cover (11) is plugged into the shell (10) via the protrusion (31).

4. The self-lubricating structure for a gear reducer according to claim 1, characterized in that: The outer sides of the shell (10) and the cover (11) are further connected with ear plates (33); the ear plates (33) are provided with interconnected threaded holes (34); and the shell (10) and the cover (11) are fixedly connected via the ear plates (33).

5. The self-lubricating structure for a gear reducer according to claim 1, characterized in that: The upper end of the cover (11) is connected to a pipe (41); the inner side of the cover (11) is also connected to a frame (42); a cavity (43) is provided in the frame (42); and the lower end of the pipe (41) is communicated with the cavity (43); and the lower end of the frame (42) is provided with a through hole (44) communicated with the cavity (43).

6. The self-lubricating structure for a gear reducer according to claim 5, characterized in that: There are a plurality of through holes (44), and the through holes (44) are arranged at the upper end of the gear (13). A through slot (45) is also provided at the lower end of the housing (10). A blocking block is inserted into the through slot (45).

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