Worm and gear structure and transmission device

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a worm and gear structure and a transmission device.The worm and gear structure comprises a worm, a worm gear and a cleaning part, first meshing teeth are formed on the outer surface of the worm, and the worm can rotate around a first axis; second meshing teeth are formed on the outer surface of the worm gear, the worm gear can rotate around a second axis, the second axis is perpendicular to the first axis, and the worm gear is in transmission connection with the worm by enabling the second meshing teeth to be meshed with the first meshing teeth; the cleaning part abuts against the outer surface of the worm and / or the outer surface of the worm wheel, and the cleaning part can extrude the tooth surfaces and the tooth roots of the first meshing teeth and / or the second meshing teeth through elastic deformation. According to the worm and gear structure, the foreign matter on the tooth surface and the tooth root of the worm and gear can be effectively cleaned, the number of the foreign matter on the tooth surface and the tooth root of the worm and gear is effectively reduced, the abrasion problem of the meshing position of the worm and gear is relieved, the worm and gear structure is lubricated in time, and the equipment failure rate is reduced.

Description

Technical Field

[0001] The present application relates to the field of mechanical transmission technology, and in particular to a worm gear structure and a transmission device. Background Art

[0002] The worm gear is one of the common mechanical transmission methods in industrial production, with the technical advantages of compact structure, large transmission ratio, smooth transmission and low noise. At the same time, because the worm gear is a mechanical contact transmission, it generates a lot of heat. During the long-term transmission process of the worm gear structure, foreign matter is easy to form on the surface of the worm gear contact, and foreign matter at the meshing point of the worm gear is easy to cause surface wear of the worm gear. Utility Model Content

[0003] The present application provides a worm gear structure and a transmission device, which are used to solve the problem in the prior art that foreign matter at the meshing position of the worm gear easily causes surface wear of the worm gear.

[0004] In one aspect, the present application provides a worm gear structure, comprising:

[0005] A worm, wherein the outer surface of the worm is formed with first meshing teeth, and the worm can rotate around a first axis;

[0006] A worm wheel, wherein the outer surface of the worm wheel is formed with second meshing teeth, the worm wheel can rotate around a second axis, the second axis is perpendicular to the first axis, and the worm wheel is connected to the worm gear by meshing the second meshing teeth with the first meshing teeth;

[0007] The cleaning part is in contact with the outer surface of the worm and / or the worm wheel, and the cleaning part can squeeze the tooth surface and tooth root of the first meshing tooth and / or the second meshing tooth through elastic deformation.

[0008] In one possible design, the cleaning section includes:

[0009] An elastic body, the elastic body can abut against the outer surface of the worm wheel through elastic deformation, and a center hole is formed on the elastic body;

[0010] The central shaft is inserted into the central hole and is clearance-matched with the inner wall of the central hole. The central shaft can rotate around a third axis, and the third axis is perpendicular to the second axis.

[0011] In a possible design, third meshing teeth are formed on the outer surface of the elastic body, and the third meshing teeth can mesh with the second meshing teeth.

[0012] In a possible design, the worm gear structure further includes a transmission assembly, a power output end of the transmission assembly is connected to the worm, and a power input end of the transmission assembly is connected to the cleaning portion.

[0013] In one possible design, the transmission assembly includes:

[0014] A first pulley, sleeved on the worm;

[0015] The second pulley is sleeved on the central shaft;

[0016] The transmission belt is wound around the first pulley and the second pulley to connect the central shaft with the worm gear.

[0017] In one possible design, the elastomer is filled with lubricating oil.

[0018] In a possible design, pores are formed in the elastomer, and the pores are used to store lubricating oil.

[0019] In a possible design, the diameter of the pores gradually decreases from the inside of the elastomer to the outer surface of the elastomer.

[0020] In one possible design, the elastic body is a sponge.

[0021] On the other hand, the present application also provides a transmission device, comprising the worm gear structure as described above.

[0022] The beneficial effects of this application are as follows:

[0023] The worm gear structure of the present application is provided with a cleaning part, which is in contact with the outer surface of the worm and / or the worm wheel, and the cleaning part can squeeze the tooth surface and tooth root of the first meshing tooth and / or the second meshing tooth through elastic deformation; in the process of worm gear transmission, the cleaning part can take away foreign matter at the tooth surface and tooth root of the first meshing tooth and / or the second meshing tooth by squeezing the tooth surface and tooth root of the first meshing tooth and / or the second meshing tooth. Among them, some foreign matter is taken away from the tooth surface and tooth root by the cleaning part by adhering to the outer surface of the cleaning part after being squeezed by the cleaning part, and some foreign matter is squeezed to the edge of the worm wheel during the squeezing process by the cleaning part, thereby achieving effective cleaning of foreign matter at the tooth surface and tooth root of the worm gear, which can effectively reduce the number of foreign matter at the tooth surface and tooth root of the worm gear, reduce the wear problem at the meshing part of the worm gear, and reduce the equipment failure rate.

[0024] The transmission device provided in the present application includes the worm gear structure in the present application, and thus includes all the above-mentioned advantages of the worm gear structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of a worm gear structure provided in one embodiment of the present application;

[0027] Figure 2 A front view of a worm gear structure provided in one embodiment of the present application.

[0028] Reference numerals:

[0029] 100, worm; 110, first meshing teeth; 200, worm wheel; 210, second meshing teeth; 300, cleaning portion; 310, elastomer; 311, third meshing teeth; 320, central axis; 400, transmission assembly; 410, first pulley; 420, second pulley; 430, transmission belt. DETAILED DESCRIPTION

[0030] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] Combine the following Figure 1-Figure 2 , describing the worm gear structure provided in the embodiments of the present application.

[0032] Reference Figure 1As shown, in the embodiment provided by the present application, the worm gear structure includes a worm 100, a worm wheel 200 and a cleaning part 300, the outer surface of the worm 100 is formed with a first meshing tooth 110, and the worm 100 can rotate around a first axis; the outer surface of the worm wheel 200 is formed with a second meshing tooth 210, and the worm wheel 200 can rotate around a second axis, the second axis is perpendicular to the first axis, and the worm wheel 200 is connected to the worm 100 by meshing the second meshing tooth 210 with the first meshing tooth 110; the cleaning part 300 abuts against the outer surface of the worm 100 and / or the worm wheel 200, and the cleaning part 300 can squeeze the tooth surface and tooth root of the first meshing tooth 110 and / or the second meshing tooth 210 through elastic deformation. In some specific embodiments, the cleaning part 300 is an elastic body 310, which can undergo elastic deformation during the squeezing process. In some embodiments, the cleaning portion 300 is in contact with the side of the worm wheel 200 away from the worm 100. During the rotation of the worm wheel 200, the cleaning portion 300 undergoes elastic deformation. The part of the cleaning portion 300 that undergoes elastic deformation penetrates into the tooth surface and tooth root of the second meshing tooth 210. Some foreign matter adheres to the outer surface of the cleaning portion 300 and is taken away from the tooth surface and tooth root by the cleaning portion 300. Some foreign matter is squeezed to the edge of the worm wheel 200 by the cleaning portion 300 and separated from the tooth surface and tooth root, thereby achieving cleaning. In other embodiments, the cleaning portion 300 is in contact with the side of the worm 100 away from the worm wheel 200. During the rotation of the worm 100, the cleaning portion 300 undergoes elastic deformation. The part of the cleaning portion 300 that undergoes elastic deformation penetrates into the tooth surface and tooth root of the first meshing tooth 110. Foreign matter adheres to the outer surface of the cleaning portion 300 and is taken away from the tooth surface and tooth root by the cleaning portion 300. In other embodiments, at least two cleaning parts 300 may be provided, at least one cleaning part 300 abuts against the worm 100, and at least one cleaning part 300 abuts against the worm wheel 200, so that the tooth surfaces and tooth roots at the meshing point of the worm 100 and the worm wheel 200 can be effectively cleaned by the cleaning parts 300.

[0033] By utilizing the technical solution of the above-mentioned embodiment, a cleaning portion 300 is provided, and the cleaning portion 300 abuts against the outer surface of the worm 100 and / or the worm wheel 200, and the cleaning portion 300 can squeeze the tooth surface and tooth root of the first meshing tooth 110 and / or the second meshing tooth 210 through elastic deformation; during the worm gear transmission process, the cleaning portion 300 can take away foreign matter on the tooth surface and tooth root of the first meshing tooth 110 and / or the second meshing tooth 210 by squeezing the tooth surface and tooth root of the first meshing tooth 110 and / or the second meshing tooth 210. Among them, some foreign matter, after being squeezed by the cleaning part 300, is taken away from the tooth surface and tooth root by the cleaning part 300 by adhering to the outer surface of the cleaning part 300, and some foreign matter is squeezed to the edge of the worm wheel 200 during the squeezing process of the cleaning part 300, thereby achieving effective cleaning of foreign matter on the tooth surface and tooth root of the worm gear, which can effectively reduce the number of foreign matter on the tooth surface and tooth root of the worm gear, reduce the wear problem at the meshing point of the worm gear, and reduce the equipment failure rate.

[0034] Reference Figure 1 As shown, in some embodiments provided in the present application, the cleaning portion 300 includes an elastomer 310 and a central axis 320. The elastomer 310 can abut against the outer surface of the worm gear 200 through elastic deformation, and a central hole is formed on the elastomer 310; the central axis 320 is passed through the central hole, and the central axis 320 is clearance-matched with the inner wall of the central hole. The central axis 320 can rotate around a third axis, and the third axis is perpendicular to the second axis. In this way, the elastomer 310 is sleeved on the central shaft 320, and the rotation of the central shaft 320 can drive the elastomer 310 to rotate, so that when rotating, different positions of the elastomer 310 can abut against the outer surface of the worm gear 200, so that the elastomer 310 and the outer surface of the worm gear 200 are alternately abutted. On the one hand, it is avoided that foreign matter cleaned from the worm gear 200 is concentrated in a part of the elastomer 310, ensuring that the elastomer 310 continues to have a good cleaning effect; on the other hand, by rotating the elastomer 310, foreign matter on the surface of the elastomer 310 can automatically fall off during the rotation process.

[0035] Reference Figure 2 As shown, in some embodiments provided in the present application, the outer surface of the elastic body 310 is formed with a third meshing tooth 311, and the third meshing tooth 311 can mesh with the second meshing tooth 210. By forming the third meshing tooth 311 on the outer surface of the elastic body 310, it is helpful for the third meshing tooth 311 to penetrate into the tooth gap of the worm gear 200 for cleaning; by making the third meshing tooth 311 mesh with the second meshing tooth 210, it is helpful to increase the squeezing force and squeezing time of the third meshing tooth 311 and the second meshing tooth 210, thereby improving the cleaning strength and effect.

[0036] Reference Figure 1As shown, in some embodiments provided in the present application, the worm gear structure further includes a transmission assembly 400, the power output end of the transmission assembly 400 is connected to the worm 100, and the power input end of the transmission assembly 400 is connected to the cleaning part 300. By providing the transmission assembly 400, the rotational power of the worm 100 can be transmitted to the cleaning part 300 without other power. In some specific embodiments, the transmission assembly 400 includes a first pulley 410, a second pulley 420 and a transmission belt 430, the first pulley 410 is sleeved on the worm 100, and the second pulley 420 is sleeved on the central shaft 320; the transmission belt 430 is wound around the first pulley 410 and the second pulley 420 to connect the central shaft 320 with the worm 100. Specifically, the diameters of the first pulley 410 and the second pulley 420 are equal, so that the rotational speed of the central shaft 320 can be equal to the rotational speed of the worm 100, so that under the premise that the first meshing teeth 110 and the second meshing teeth 210 are meshed with each other, the third meshing teeth 311 on the outer surface of the elastomer 310 and the second meshing teeth 210 can also be meshed with each other.

[0037] In some embodiments provided in the present application, lubricating oil is filled in the elastic body 310. By filling the lubricating oil in the elastic body 310, the lubricating oil in the elastic body 310 is squeezed out during the elastic deformation of the elastic body 310, so that the lubricating oil is evenly applied to the tooth surface and tooth root of the worm wheel 200 to lubricate the worm wheel 200, and at the same time, it can also be transferred from the worm wheel 200 to the worm 100 to lubricate the worm 100.

[0038] In some embodiments provided in the present application, pores are formed in the elastomer 310, and the pores are used to store lubricating oil. When the elastomer 310 is squeezed, the lubricating oil in the pores is squeezed out. In some specific embodiments, the diameter of the pores gradually decreases from the inside of the elastomer 310 to the outer surface of the elastomer 310. In this way, since the pores on the outer surface of the elastomer 310 are small, the structural density of the elastomer 310 near the outer surface is large, so that a large extrusion force can be generated during the extrusion process, which is conducive to taking out foreign matter on the tooth surface and tooth root; since the pores inside the elastomer 310 are large, it is conducive to storing lubricating oil inside the elastomer 310. When the elastomer 310 is squeezed, the lubricating oil near the outer surface of the elastomer 310 is squeezed out, and the lubricating oil inside the elastomer 310 will be replenished to the position near the outer surface of the elastomer 310. In some specific embodiments, the elastomer 310 is a sponge, which is a compressible material with a rough surface and internal pores that can also store lubricating grease.

[0039] The working process of the worm gear structure in the embodiment of the present application is as follows:

[0040] During the meshing transmission process between the worm 100 and the worm wheel 200, the elastomer 310 is squeezed and elastically deformed, and enters the tooth surface and tooth root of the worm wheel 200 to squeeze out or bring out foreign matter; at the same time, the squeezed elastomer 310 evenly spreads the lubricating oil stored in the internal pores on the tooth surface of the worm wheel 200, and then the lubricating oil is transferred from the worm wheel 200 to the worm 100, thereby realizing the lubrication of the worm gear structure.

[0041] A transmission device is also provided in an embodiment of the present application, comprising the worm gear structure in the above embodiment.

[0042] It should be noted that the transmission device includes a worm gear structure, which also includes all the advantages of the worm gear structure mentioned above, which will not be repeated here.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A worm gear structure, characterized in that: include: A worm, wherein the outer surface of the worm is formed with first meshing teeth, and the worm is capable of rotating around a first axis; A worm wheel, wherein the outer surface of the worm wheel is formed with second meshing teeth, the worm wheel can rotate around a second axis, the second axis is perpendicular to the first axis, and the worm wheel is connected to the worm gear by meshing the second meshing teeth with the first meshing teeth; The cleaning portion is in contact with the outer surface of the worm and / or the worm wheel, and the cleaning portion can squeeze the tooth surface and tooth root of the first meshing tooth and / or the second meshing tooth through elastic deformation.

2. The worm gear structure according to claim 1, characterized in that: The cleaning unit comprises: an elastic body, the elastic body being capable of abutting against the outer surface of the worm wheel by elastic deformation, and the elastic body being formed with a center hole; The central shaft is inserted into the central hole and is loosely matched with the inner wall of the central hole. The central shaft can rotate around a third axis, and the third axis is perpendicular to the second axis.

3. The worm gear structure according to claim 2, characterized in that: A third meshing tooth is formed on the outer surface of the elastic body, and the third meshing tooth can mesh with the second meshing tooth.

4. The worm gear structure according to claim 3, characterized in that: It also includes a transmission assembly, wherein a power output end of the transmission assembly is connected to the worm, and a power input end of the transmission assembly is connected to the cleaning part.

5. The worm gear structure according to claim 4, characterized in that: The transmission assembly comprises: A first pulley, sleeved on the worm; A second pulley is sleeved on the central shaft; A transmission belt is wound around the first pulley and the second pulley to connect the central shaft with the worm gear.

6. The worm gear structure according to any one of claims 1 to 5, characterized in that: The elastic body is filled with lubricating oil.

7. The worm gear structure according to claim 6, characterized in that: The elastic body has pores formed therein, and the pores are used to store the lubricating oil.

8. The worm gear structure according to claim 7, characterized in that: The diameter of the pores gradually decreases from the inside of the elastomer to the outer surface of the elastomer.

9. The worm gear structure according to claim 6, characterized in that: The elastic body is a sponge.

10. A transmission device, characterized in that: The worm gear structure comprises the worm gear structure as described in any one of claims 1 to 9.

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