Worm gear reduction gearbox with noise reduction mechanism

Abstract

The utility model provides a worm gear reduction gearbox with a noise reduction mechanism. The worm gear reduction gearbox comprises a shell, a worm gear, a worm meshed with the worm gear to form a meshing area and an oil storage cavity, and the oil storage cavity is located under the meshing area and used for storing lubricating oil. Comprising an oil conveying part composed of an oil conveying pipe and an oil conveying mechanism, one end of the oil conveying pipe extends below the liquid level of lubricating oil in the oil storage cavity, the other end of the oil conveying pipe extends to the meshing area, and the oil conveying mechanism is installed on a transmission shaft of the worm wheel and abuts against the outer wall of the oil conveying pipe to guide the lubricating oil to the meshing area. At the moment, one end of the oil conveying pipe sucks lubricating oil in the oil storage cavity, and the other end of the oil conveying pipe sprays the lubricating oil to the meshing area of the worm gear and the worm, so that the meshing position is lubricated, and the lubricating effect of the worm gear reduction gearbox is improved; therefore, the purpose of reducing the noise of the reduction gearbox is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of reduction boxes, in particular to a worm reduction box with a noise reduction mechanism. BACKGROUND

[0002] The worm reduction box is mainly composed of a worm or gear, a shaft, a bearing and a machine box, and has the characteristics of durability, large transmission ratio, small size, strong self-locking ability, simple structure and easy manufacturing.

[0003] After long-term use, the worm and the worm may be worn, foreign matter may enter the meshing gap of the worm and the worm, or the meshing gap may be insufficiently lubricated, resulting in a large noise of the reduction box.

[0004] Under normal circumstances, the lubricating oil in the reduction box is transported to the meshing area of the worm and the worm by an oil pump or natural flow. The oil pump increases the production cost of the reduction box and makes the internal structure of the reduction box more complex, which is not convenient for maintenance of the oil pump. When the natural flow is used to lubricate, the oil distribution is uneven, which affects the lubrication effect of the meshing area.

[0005] Therefore, how to design a worm and worm reduction box that facilitates lubrication of the meshing area has become a technical problem to be solved by those skilled in the art. CONTENT OF THE INVENTION

[0006] The application provides a worm reduction box with a noise reduction mechanism to at least solve the above technical problems in the prior art.

[0007] A worm reduction box with a noise reduction mechanism is provided, which comprises a shell, a worm, a worm gear meshing with the worm to form a meshing area, an oil storage cavity, the oil storage cavity being located directly below the meshing area for storing lubricating oil;

[0008] The oil delivery part comprises an oil delivery pipe and an oil delivery mechanism. One end of the oil delivery pipe extends below the liquid level of the lubricating oil in the oil storage cavity, and the other end of the oil delivery pipe extends to the meshing area. The oil delivery mechanism is installed on the transmission shaft of the worm, and the oil delivery mechanism abuts against the outer wall of the oil delivery pipe to guide the lubricating oil to the meshing area.

[0009] In an implementation, the oil delivery mechanism comprises a connecting ring and a plurality of extrusion rollers. The connecting ring is fixedly installed on the transmission shaft of the worm, the plurality of extrusion rollers are uniformly distributed around the circumference of the transmission shaft and are rotationally connected with the connecting ring, and the circumferential wall of the extrusion roller abuts against the oil delivery pipe.

[0010] In an implementation, the oil delivery pipe is an elastic hose.

[0011] In an embodiment, the worm gear reduction box comprises a worm gear mounting cavity and a worm mounting cavity arranged on the housing, the worm mounting cavity is located at the side of the worm gear mounting cavity and communicates with the worm gear mounting cavity, the worm gear is rotatably arranged in the worm gear mounting cavity, the worm is rotatably arranged in the worm mounting cavity, and the meshing area is located at the joint of the worm gear mounting cavity and the worm mounting cavity.

[0012] In an embodiment, the worm gear reduction box further comprises an oil delivery cavity arranged on the housing, a communication passage is arranged between the oil delivery cavity and the worm gear mounting cavity, the transmission shaft of the worm gear extends through the communication passage into the oil delivery cavity, and the oil delivery component is arranged in the oil delivery cavity.

[0013] In an embodiment, the worm gear reduction box further comprises a first bearing and a first sealing ring, the first bearing is arranged in the communication passage and is in bearing connection with the transmission shaft of the worm gear, and the first sealing ring is sleeved outside the transmission shaft of the worm gear and separates the oil delivery cavity from the worm gear mounting cavity.

[0014] In an embodiment, the worm gear reduction box further comprises a repair end cover, the repair end cover is fixed on the housing by bolts and seals the oil delivery cavity.

[0015] In an embodiment, the worm mounting cavity is located directly above the oil storage cavity, and a filter screen is arranged between the worm mounting cavity and the oil storage cavity.

[0016] In an embodiment, the transmission shaft of the worm gear is arranged in the longitudinal direction.

[0017] Compared with the prior art, the worm gear reduction box with a noise reduction mechanism has the following beneficial effects:

[0018] In the present application, the oil delivery component is arranged on the transmission shaft of the worm gear, the oil delivery mechanism is driven to rotate by the power of the worm gear, so as to extrude the oil delivery pipe, one end of the oil delivery pipe absorbs the lubricating oil in the oil storage cavity, and the other end of the oil delivery pipe sprays the lubricating oil to the meshing area of the worm gear and the worm, so as to realize the lubrication of the meshing area and improve the lubrication effect of the worm gear reduction box, thereby achieving the purpose of reducing the noise of the reduction box.

[0019] The oil delivery component is linked with the transmission shaft of the worm gear, which replaces the use of the oil pump and simplifies the structure of the reduction box, thereby facilitating the maintenance of the equipment.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0022] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0023] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0024] Figure 2 A schematic diagram of the internal structure of this application is shown;

[0025] Figure 3 A cross-sectional view of the housing of this application is shown;

[0026] Figure 4 A partial unfolded schematic diagram of this application is shown;

[0027] Figure 5 A first angular sectional view of this application is shown;

[0028] Figure 6 A second angular sectional view of this application is shown.

[0029] Explanation of the labels in the diagram:

[0030] 1. Housing; 11. Worm gear mounting cavity; 12. Worm mounting cavity; 13. Oil delivery cavity; 14. Connecting channel;

[0031] 2. Worm gear; 3. Worm; 4. Oil reservoir;

[0032] 5. Oil conveying components; 51. Oil conveying pipe; 52. Oil conveying mechanism; 521. Connecting ring; 522. Extrusion roller;

[0033] 61. First bearing; 62. First sealing ring;

[0034] 7. Repair the end cap; 8. Filter screen. Detailed Implementation

[0035] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] like Figure 1 As shown, it includes a housing 1, a worm gear 2, and a worm 3 that meshes with the worm gear 2. The worm gear 2 and the worm 3 mesh with each other and are encapsulated in the housing 1. The worm 3 is used as the input end and the worm gear 2 is used as the output end, thereby achieving the purpose of deceleration and torque increase.

[0037] Specifically, such as Figure 2 and Figure 3 As shown, the housing 1 has a worm gear mounting cavity 11 and a worm mounting cavity 12 inside. The worm mounting cavity 12 is located on one side of the worm gear mounting cavity 11 and is connected to the worm gear mounting cavity 11. The worm gear 2 and the worm 3 are rotatably mounted in the worm gear mounting cavity 11 and the worm mounting cavity 12 respectively through bearings. The worm gear 2 and the worm 3 mesh with each other to form a meshing area.

[0038] In order to reduce the noise of the gearbox, this embodiment also includes an oil delivery component 5 for delivering lubricating oil to the meshing area, thereby reducing the risk of wear in the meshing area of ​​the worm gear 2 and the worm 3.

[0039] Under normal circumstances, an oil pump needs to be installed inside the housing 1 to circulate the lubricating oil, thereby spraying the lubricating oil to the meshing area to lubricate the meshing point of the worm gear 2 and the worm 3.

[0040] Worm gear reducers operate at relatively slow speeds, while oil pumps require faster speeds to drive the lubricating oil circulation. This necessitates the use of a separate power source for the oil pump, which increases the number of parts in the reducer and raises its cost.

[0041] In this embodiment, as Figure 3 and Figure 5 As shown, the housing 1 is also provided with an oil delivery chamber 13 and an oil storage chamber 4. The oil storage chamber 4 is located directly below the worm gear mounting chamber 12 and is used to store lubricating oil. The oil delivery chamber 13 is located on one side of the worm gear mounting chamber 11. The oil delivery chamber 13 and the worm gear mounting chamber 11 are connected by a connecting channel 14. The drive shaft of the worm gear 2 extends through the connecting channel 14 into the oil delivery chamber 13.

[0042] It is worth noting that the oil delivery chamber 13 is equipped with an oil delivery component 5 fixed to the drive shaft of the worm gear 2, such as... Figure 2 and Figure 4 As shown, the oil delivery component 5 includes an oil delivery pipe 51 and an oil delivery mechanism 52. The oil delivery pipe 51 is installed on the inner wall of the oil delivery chamber 13. One end of the oil delivery pipe 51 extends below the surface of the lubricating oil in the oil storage chamber 4, and the other end of the oil delivery pipe 51 extends to the meshing area of ​​the worm gear 2 and the worm 3. The oil delivery mechanism 52 is connected to the drive shaft of the worm gear 2 and is used to abut against the oil delivery pipe 51 to spray the lubricating oil in the oil storage chamber 4 into the meshing area.

[0043] Specifically, in this embodiment, such as Figure 4 As shown, the oil conveying mechanism 52 includes a connecting ring 521 and a squeezing roller 522. The connecting ring 521 is fixedly connected to the drive shaft of the worm gear 2. Three squeezing rollers 522 are provided and are evenly distributed around the drive shaft of the worm gear 2. The squeezing rollers 522 are rotatably connected to the connecting ring 521.

[0044] The oil delivery pipe 51 is made of elastic hose, and the peripheral wall of the extrusion roller 522 abuts against the outer wall of the oil delivery pipe 51, thereby enabling the oil delivery pipe 51 to undergo elastic deformation.

[0045] Because the oil supply pipe 51 sprays lubricating oil to the meshing position of the worm gear 2 and the worm 3, the lubricating oil can flow back into the oil supply chamber 13 through the worm gear mounting cavity 11 and the connecting channel 14, thus contaminating the oil supply mechanism 52 and the oil supply pipe 51. To solve this problem, in this embodiment, as follows... Figure 3 and Figure 5 As shown, a first bearing 61 and a first sealing ring 62 are provided inside the connecting channel 14. The drive shaft of the worm gear 2 is connected to the bearing of the connecting channel 14 through the first bearing 61, which supports the worm gear 2. The first sealing ring 62 separates the worm gear mounting cavity 11 and the oil supply cavity 13, thereby solving the problem of lubricating oil entering the oil supply cavity 13 through the connecting channel 14.

[0046] To facilitate maintenance of the oil delivery mechanism 52, in this embodiment, as follows: Figure 5 As shown, it also includes a repair end cap 7 that encapsulates the oil delivery chamber 13, wherein the repair end cap 7 can be fixedly connected to the housing 1 by screws.

[0047] In order to better receive the lubricating oil sprayed from the oil supply pipe 51, in this embodiment, as follows: Figure 3 As shown, the oil storage chamber 4 is located directly below the worm gear mounting chamber 12. A filter screen 8 is provided between the oil storage chamber 4 and the worm gear mounting chamber 12 to filter the circulating lubricating oil.

[0048] It is worth noting here that, as Figure 2 and Figure 4 As shown, the drive shaft of the worm 3 is vertically arranged, which means that it is perpendicular to the horizontal plane. Therefore, the area where the worm 3 meshes with the worm wheel 2 is located on the side of the worm wheel 2. Even if the internal parts of the gearbox break or wear, the parts that fall off the gearbox are unlikely to remain in the meshing area under their own weight, thus reducing the risk of tooth pressure fracture in the meshing area.

[0049] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A worm gear reducer with a noise reduction mechanism, comprising a housing (1), a worm gear (2), and a worm (3) meshing with the worm gear (2) to form a meshing area, characterized in that, Oil reservoir (4) is located directly below the meshing area and is used to store lubricating oil; The oil delivery component (5) consists of an oil delivery pipe (51) and an oil delivery mechanism (52). One end of the oil delivery pipe (51) extends below the surface of the lubricating oil in the oil storage chamber (4), and the other end of the oil delivery pipe (51) extends to the meshing area. The oil delivery mechanism (52) is mounted on the drive shaft of the worm gear (2). The oil delivery mechanism (52) abuts against the outer wall of the oil delivery pipe (51) to guide the lubricating oil to the meshing area.

2. The worm gear reducer with a noise reduction mechanism according to claim 1, characterized in that, The oil delivery mechanism (52) includes a connecting ring (521) and several extrusion rollers (522). The connecting ring (521) is fixedly installed on the drive shaft of the worm gear (2). The several extrusion rollers (522) are evenly distributed around the circumference of the drive shaft and are rotatably connected to the connecting ring (521). The peripheral wall of the extrusion rollers (522) abuts against the oil delivery pipe (51).

3. A worm gear reducer with a noise reduction mechanism according to claim 2, characterized in that, The oil pipeline (51) is made of flexible hose.

4. A worm gear reducer with a noise reduction mechanism according to claim 1 or 3, characterized in that, It includes a worm gear mounting cavity (11) and a worm mounting cavity (12) disposed on the housing (1). The worm mounting cavity (12) is located to the side of the worm gear mounting cavity (11) and communicates with the worm gear mounting cavity (11). The worm gear (2) is rotatably mounted in the worm gear mounting cavity (11), and the worm (3) is rotatably mounted in the worm mounting cavity (12). The meshing area is located at the connection between the worm gear mounting cavity (11) and the worm mounting cavity (12).

5. A worm gear reducer with a noise reduction mechanism according to claim 4, characterized in that, It also includes an oil delivery chamber (13) provided on the housing (1), a communication channel (14) is provided between the oil delivery chamber (13) and the worm gear mounting cavity (11), the drive shaft of the worm gear (2) extends through the communication channel (14) into the oil delivery chamber (13), and the oil delivery component (5) is provided in the oil delivery chamber (13).

6. A worm gear reducer with a noise reduction mechanism according to claim 4, characterized in that, It also includes a first bearing (61) and a first sealing ring (62). The first bearing (61) is disposed in the connecting channel (14) and is connected to the drive shaft bearing of the worm gear (2). The first sealing ring (62) is sleeved on the outside of the drive shaft of the worm gear (2) and separates the oil delivery chamber (13) from the worm gear mounting chamber (11).

7. A worm gear reducer with a noise reduction mechanism according to claim 4, characterized in that, It also includes a repair end cap (7), which is fixed to the housing (1) by bolts and seals the oil delivery chamber (13).

8. A worm gear reducer with a noise reduction mechanism according to claim 4, characterized in that, The worm gear mounting cavity (12) is located directly above the oil storage cavity (4), and a filter screen (8) is provided between the worm gear mounting cavity (12) and the oil storage cavity (4).

9. A worm gear reducer with a noise reduction mechanism according to claim 8, characterized in that, The drive shaft of the worm gear (2) is arranged longitudinally.

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