Low-noise driving spiral bevel gear

Abstract

The utility model relates to the technical field of driving spiral bevel gears, in particular to a low-noise driving spiral bevel gear which comprises an annular base, the top face of the base is an inclined face inclining downwards, and a plurality of teeth arranged at intervals are arranged along the top face of the base. A first annular cavity is formed in the base, the first annular cavity penetrates through the inner wall of the base, an annular seat coaxial with the base is arranged on the inner side of the base, a second annular cavity is formed in the annular seat, and the second annular cavity penetrates through the outer wall of the annular seat and is correspondingly communicated with the first annular cavity; and a guide plate corresponding to the top surface of the base is arranged at the top of the first annular cavity. When the low-noise driving spiral bevel gear is used, the lubricating oil can do centrifugal motion in the annular cavity when the gear rotates, so that the lubricating oil can flow towards the through hole along the arc-shaped surface of the flow guide block, the lubricating oil is continuously supplemented to the teeth, and the noise generated by the gear can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of driving spiral bevel gears, in particular to a low-noise driving spiral bevel gear. Background Technique

[0002] The basic function of the driving spiral bevel gear is to increase the torque from the transmission or the universal drive device, while reducing the rotational speed and changing the transmission direction of the torque. The power is input from the driving spiral bevel gear and output through the driven gear. The main reducer has two functions. The first is to change the direction of power transmission, and the second is to provide a common transmission ratio for each gear as an extension of the transmission. The output of the transmission is a torque rotating around the axis to provide power for the output shaft.

[0003] Due to the meshing between the gears of the driving spiral bevel gear, the lubricating oil between the gears will be lost during the rotation of the gears. With the loss of the lubricating oil, wear and other conditions may occur between the gears due to insufficient lubrication, resulting in greater noise during the rotation of the gears. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to propose a low-noise driving spiral bevel gear.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: design a low-noise driving spiral bevel gear, including an annular base, the top surface of the base is an inclined surface sloping downward, and a plurality of spaced teeth are arranged along the top surface of the base;

[0006] A first annular cavity is opened inside the base, the first annular cavity penetrates the inner wall of the base, and an annular seat coaxial with the base is arranged inside the base. A second annular cavity is arranged inside the annular seat, and the second annular cavity penetrates the outer wall of the annular seat and corresponds to communicate with the first annular cavity;

[0007] A flow guide plate corresponding to the top surface of the base is arranged at the top of the first annular cavity, and an annular flow guide block is arranged along the edge of the first annular cavity. The inner side of the flow guide block is an arc surface with a concave surface sloping upward;

[0008] A through hole is opened on the top surface of the base, the through hole is correspondingly arranged at the edge of the first annular cavity, and the through hole is located between adjacent teeth. An oil injection valve port communicating with the second annular cavity is opened on the top of the annular seat.

[0009] Preferably, a plurality of rubber sheets are arranged on the inner wall of the through hole, and the edges between adjacent rubber sheets are staggered and stacked.

[0010] Preferably, a limiting groove is provided on the inner side of the annular seat. The limiting groove is arranged along the axial direction of the annular seat and penetrates through the upper and lower ends of the annular seat.

[0011] Preferably, a plurality of elastic rubber strips arranged at intervals are provided on the inner wall of the annular seat. The elastic rubber strips are arranged along the axial direction of the annular seat.

[0012] Preferably, arc-shaped sections are provided on both sides of the top of the tooth, and the surfaces of the teeth are all smooth surfaces.

[0013] Preferably, an annular opening is provided at the bottom of the base. The opening corresponds to the first annular cavity, and a sealing cover is threadedly connected in the opening.

[0014] Preferably, an annular sealing plate is installed along the bottom edge of the sealing cover. The sealing plate corresponds to the bottom of the base, and a sealing ring fixed on the sealing plate is provided between the sealing plate and the base.

[0015] The design scheme proposed by the present utility model has the following beneficial effects during application:

[0016] 1. Through the lubricating oil injected into the annular cavity of the low-noise active spiral bevel gear, when the gear rotates, the lubricating oil makes a centrifugal motion in the annular cavity. Along the arc-shaped surface provided at the edge of the first annular cavity, the lubricating oil can flow towards the through hole along the arc-shaped surface of the diversion block during centrifugal motion. Thus, during the rotation of the gear, the teeth are continuously replenished with lubricating oil, thereby reducing the noise generated by the gear.

[0017] 2. Through the opening provided at the bottom of the base of the low-noise active spiral bevel gear, when the gear is not in use, the annular cavity can be cleaned to prevent the lubricating oil in the annular cavity from solidifying due to frictional heat generation, thereby blocking the through hole and affecting the outward flow of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0019] Figure 2 is a schematic structural view of the present utility model Figure 2 ;

[0020] Figure 3 is a top view of the present utility model;

[0021] Figure 4 is a sectional structural view of the present utility model;

[0022] Figure 5 is a through-hole structural view of the present utility model;

[0023] Figure 6This is an enlarged view of part A of the present utility model.

[0024] In the figure: 1, base; 2, teeth; 3, annular seat; 4, limiting groove; 5, elastic rubber strip; 6, first annular cavity; 7, second annular cavity; 8, flow guide plate; 9, flow guide block; 10, through hole; 11, oil injection valve port; 12, opening; 13, sealing cover; 14, sealing plate; 15, rubber sheet. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0026] Refer to Figures 1-6 , a low-noise active spiral bevel gear, including an annular base 1. The top surface of the base 1 is an inclined surface that slopes downward, and a plurality of teeth 2 arranged at intervals are provided along the top surface of the base 1. Arc-shaped cut surfaces are provided on both sides of the top of the teeth 2. When the two gears are meshed, it is easier for the teeth 2 of the gear to be staggered and meshed. The surfaces of the teeth 2 are all smooth surfaces, ensuring the smoothness of the meshing rotation of the gear.

[0027] As Figure 4 shown, a first annular cavity 6 is opened inside the base 1. The first annular cavity 6 penetrates the inner wall of the base 1. An annular seat 3 coaxial with the base 1 is provided inside the base 1. A second annular cavity 7 is provided inside the annular seat 3, and the second annular cavity 7 penetrates the outer wall of the annular seat 3 and corresponds to and communicates with the first annular cavity 6; a through hole 10 is opened on the top surface of the base 1. The through hole 10 is correspondingly arranged at the edge of the first annular cavity 6 and is located between two adjacent teeth 2. An oil injection valve port 11 communicating with the second annular cavity 7 is opened on the top of the annular seat 3. Before the gear is used, lubricating oil is injected into the annular cavity from the oil injection valve port 11. When the gear is in use, the lubricating oil in the annular cavity can do centrifugal motion with the rotation of the gear, so as to flow towards the edge of the annular cavity. As the lubricating oil converges and is squeezed at the edge of the annular cavity, the lubricating oil can flow out from the through hole 10 and lubricate the teeth 2, reducing the friction generated when the teeth 2 are meshed and rotated, and further reducing the noise generated during the operation of the gear.

[0028] In order to prevent too much lubricating oil from flowing out of the through hole 10 during the rotation of the gear, resulting in excessive loss of lubricating oil and being unfavorable for the long-term action of the lubricating oil on the gear. Therefore, as Figure 5As shown, a plurality of rubber sheets 15 are provided on the inner wall of the through hole 10, and the edges of two adjacent rubber sheets 15 are staggered and stacked. In actual use, the rubber sheets 15 are elastic and can limit the lubricating oil flowing out of the through hole 10, ensuring that the lubricating oil can flow out of the through hole 10 slowly.

[0029] It should be noted that if Figure 4 As shown, a guide plate 8 corresponding to the top surface of the base 1 is arranged at the top of the first annular cavity 6, and an annular guide block 9 is arranged along the edge of the first annular cavity 6. The inner side of the guide block 9 is a concave arc surface inclined upward, which guides the flow of the lubricating oil during centrifugation, so that the lubricating oil can be fully gathered to the through hole 10 during centrifugation, ensuring full utilization of the lubricating oil in the annular cavity; and during use, the inclined setting of the guide plate 8 makes the edge of the annular cavity smaller than the middle part, so that the lubricating oil can obtain more pressure when flowing to the edge, so that the lubricating oil can be squeezed out from between the rubber sheets 15.

[0030] Specifically, a limiting groove 4 is provided on the inner side of the annular seat 3, and the limiting groove 4 is provided along the axial direction of the annular seat 3, and the limiting groove 4 passes through the upper and lower ends of the annular seat 3. After the lubricating oil is filled into the annular cavity, the base 1 can be mounted on the shaft for driving the gear to rotate. In actual use, a limiting block corresponding to the limiting groove 4 will be provided on the shaft, so that when the shaft rotates, it can stably drive the gear to rotate.

[0031] Furthermore, a plurality of elastic rubber strips 5 are arranged at intervals on the inner wall of the annular seat 3. The elastic rubber strips 5 are arranged along the axial direction of the annular seat 3. After the shaft is placed in the annular seat 3, the elastic rubber strips 5 can be deformed to apply force to the shaft and the annular seat 3, so that the annular seat 3 is fastened to the shaft.

[0032] like Figure 2 and Figure 4 As shown, an annular opening 12 is provided at the bottom of the base 1, the opening 12 corresponds to the first annular cavity 6, and a sealing cover 13 is threadedly connected to the opening 12. When the gear is not in use, the sealing cover 13 can be opened and the annular cavity can be cleaned to prevent the lubricating oil from drying up and causing the through hole 10 to be blocked.

[0033] like Figure 6 As shown, an annular sealing plate 14 is installed along the bottom edge of the sealing cover 13, the sealing plate 14 corresponds to the bottom of the base 1, and a sealing ring fixed on the sealing plate 14 is provided between the sealing plate 14 and the base 1 to ensure the airtightness between the sealing cover 13 and the opening 12 and prevent the leakage of lubricating oil in the annular cavity.

[0034] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A low-noise active spiral bevel gear, characterized in that: It comprises an annular base (1), the top surface of the base (1) is a slope inclined downward, and a plurality of teeth (2) arranged at intervals are arranged along the top surface of the base (1); A first annular cavity (6) is provided inside the base (1), the first annular cavity (6) penetrates the inner wall of the base (1), an annular seat (3) coaxially arranged with the base (1) is provided on the inner side of the base (1), a second annular cavity (7) is provided inside the annular seat (3), the second annular cavity (7) penetrates the outer wall of the annular seat (3) and is in communication with the first annular cavity (6) accordingly; A guide plate (8) corresponding to the top surface of the base (1) is arranged at the top of the first annular cavity (6), and an annular guide block (9) is arranged along the edge of the first annular cavity (6), the inner side of the guide block (9) being a concave curved surface inclined upward; A through hole (10) is provided on the top surface of the base (1), the through hole (10) being arranged correspondingly at the edge of the first annular cavity (6), and the through hole (10) being located between two adjacent teeth (2), and an oil injection valve port (11) communicating with the second annular cavity (7) is provided on the top of the annular seat (3).

2. A low-noise active spiral bevel gear according to claim 1, characterized in that: A plurality of rubber sheets (15) are arranged on the inner wall of the through hole (10), and the edges between two adjacent rubber sheets (15) are staggered and stacked.

3. The low-noise active spiral bevel gear according to claim 1, characterized in that: A limiting groove (4) is arranged on the inner side of the annular seat (3), the limiting groove (4) is arranged along the axial direction of the annular seat (3), and the limiting groove (4) passes through the upper and lower ends of the annular seat (3).

4. The low-noise active spiral bevel gear according to claim 1, characterized in that: A plurality of elastic rubber strips (5) arranged at intervals are arranged on the inner wall of the annular seat (3), and the elastic rubber strips (5) are arranged along the axial direction of the annular seat (3).

5. The low-noise active spiral bevel gear according to claim 1, characterized in that: Arc-shaped cut surfaces are arranged on both sides of the top of the tooth (2), and the surface of the tooth (2) is smooth.

6. The low-noise active spiral bevel gear according to claim 1, characterized in that: An annular opening (12) is provided at the bottom of the base (1), the opening (12) corresponds to the first annular cavity (6), and a sealing cover (13) is threadedly connected to the opening (12).

7. The low-noise active spiral bevel gear according to claim 6, characterized in that: An annular sealing plate (14) is installed along the bottom edge of the sealing cover (13); the sealing plate (14) corresponds to the bottom of the base (1), and a sealing ring fixed on the sealing plate (14) is provided between the sealing plate (14) and the base (1).

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