Wear-resistant gear

Abstract

The utility model belongs to the technical field of gears, and particularly relates to a wear-resistant gear which comprises an alloy disc and a plurality of tooth ends integrally installed on the outer side of the alloy disc, an annular groove is formed in the alloy disc, a plurality of flow dividing holes are distributed in the inner wall of the annular groove in a circumferential array mode, and the flow dividing holes penetrate through the tooth ends in the radial direction of the alloy disc. Oil absorption cotton rings are inserted into the annular grooves, a plurality of oil absorption strips are distributed on the outer portions of the oil absorption cotton rings in an array mode along the circumference, one ends of the oil absorption strips are fixedly connected to the outer sides of the oil absorption cotton rings, and the other ends of the oil absorption strips extend out of the tooth ends along the adjacent flow distribution holes. Extending grooves are formed in the ends, away from the alloy disc, of the tooth ends along the center line, the extending grooves communicate with the adjacent flow dividing holes, and two extending strips are integrally installed at the ends, extending out of the flow dividing holes, of the oil absorption strips. The lubricating oil channel is formed in the gear, lubricating oil can be conveniently distributed to the outer surface of each tooth end, and the contact fatigue resistance of tooth surfaces is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gears, and in particular relates to a wear-resistant gear. Background Art

[0002] The better the wear resistance of the gear, the longer its service life. Generally speaking, the higher the hardness of the gear, the higher the wear resistance, but too high a hardness may also cause cracking and fracture of the tooth surface. Carburizing can greatly increase the carbon concentration on the surface of the gear and improve its hardness; quenching changes the crystal state of the gear through rapid cooling, which can also improve the hardness.

[0003] The friction of gears is concentrated at the meshing point, that is, its tooth surface, and the rest of the gear is basically free from friction. Especially when the teeth are in contact, the contact surface will rub violently with the rapid rotation of the gears. Some manufacturers embed steel shafts on these teeth to convert the sliding friction between the teeth into rolling friction.

[0004] When the gears rotate in the gearbox, the meshing teeth collide violently, and the steel shaft is used for rolling friction. However, the thickness of the teeth becomes smaller after the steel shaft is installed. In particular, the rotating connection points between the steel shaft and the teeth are prone to cracking or distortion after the violent collision, causing the contact fatigue strength of the tooth surface to decrease. For this reason, we propose a wear-resistant gear. Utility Model Content

[0005] The purpose of the present invention is to provide a wear-resistant gear, in which a lubricating oil channel is opened inside the gear to facilitate the distribution of lubrication to the outer surface of each tooth end, so as to improve the contact fatigue resistance of the tooth surface.

[0006] The technical solutions adopted in this utility are as follows:

[0007] A wear-resistant gear comprises an alloy plate and a plurality of tooth ends integrally mounted on the outer side of the alloy plate, an annular groove is provided inside the alloy plate, a plurality of diverter holes are distributed along a circumferential array on the inner wall of the annular groove, the diverter holes all penetrate the tooth ends along the radial direction of the alloy plate, the diverter holes coincide with the center axis of the tooth ends, an oil-absorbing cotton ring is inserted inside the annular groove, a plurality of oil-absorbing strips are distributed along a circumferential array on the outer side of the oil-absorbing cotton ring, one end of the oil-absorbing strips is fixedly connected to the outer side of the oil-absorbing cotton ring, and the other end of the oil-absorbing strips extends out of the tooth ends along adjacent diverter holes. When the gearbox rotates, The lower surface of the alloy disk and part of the tooth end are immersed in the lubricating oil, and part of the tooth ends of two adjacent gears are meshed. Driven by the transmission shaft, the alloy disk drives the tooth end, the oil-absorbing cotton ring and the oil-absorbing strip to rotate. When the tooth end is immersed in the lubricating oil, it drives the corresponding oil-absorbing strip to dip into the lubricating oil. The lubricating oil diffuses along the oil-absorbing cotton ring and is distributed to other oil-absorbing strips. When the tooth end is meshed, it will contact the oil-absorbing strips of the adjacent tooth ends. A lubricating oil channel can be opened inside the gear to facilitate the distribution of lubrication to the outer surface of each tooth end, so as to improve the contact fatigue strength of the tooth surface and reduce the occurrence of gear breakage. The gear has good wear resistance.

[0008] An extension groove is formed along the center line at one end of the tooth end away from the alloy disk, and the extension grooves are connected to adjacent diversion holes. When the extension grooves contact adjacent oil absorption strips, the lubricating oil squeezed out of the adjacent oil absorption strips can be temporarily stored, thereby extending the time that the lubricating oil stays at the tooth end, so that the lubricating oil can be coated on the contact surface of the tooth end as much as possible.

[0009] One end of the oil absorption strip extending out of the diversion hole is integrally installed with two extension strips, and the extension strips are all hidden inside the extension groove. The lubricating oil in the oil absorption strip diffuses onto the extension strip, so that the lubricating oil has a larger coating surface at the adjacent tooth end, further expanding the lubrication effect.

[0010] The ends of the two adjacent extension strips that are away from each other are both integrally installed with folding parts, and the two adjacent folding parts are respectively fixed on the two inclined surfaces outside the tooth ends. The lubricating oil in the extension strip diffuses to the folding parts, so that the lubricating oil has a larger coating surface on the inclined surfaces of the adjacent tooth ends, further expanding the lubrication effect.

[0011] A steel ring is fixed on the inner wall of the annular groove, and the outer side of the steel ring is bonded to the inner side of the oil-absorbing cotton ring for fixing the oil-absorbing cotton ring, resisting the centrifugal force on the oil-absorbing cotton ring when the gear rotates, and preventing the oil-absorbing cotton ring from escaping from the annular groove and entering the diversion hole.

[0012] The edges of the diversion holes are all rounded, and the oil absorbing strip is supported by an arc surface to prevent the oil absorbing strip from being cut by sharp edges, so that the oil absorbing strip can be kept intact.

[0013] The technical effects achieved by this utility model are:

[0014] The utility model discloses a wear-resistant gear. When the gear rotates in the gearbox, the lower surface of the alloy plate and part of the tooth end are immersed in the lubricating oil, and part of the tooth ends of two adjacent gears are meshed. Under the drive of the transmission shaft, the alloy plate drives the tooth end, the oil-absorbing cotton ring and the oil-absorbing strip to rotate. When the tooth end is immersed in the lubricating oil, it drives the corresponding oil-absorbing strip to dip in the lubricating oil. The lubricating oil diffuses along the oil-absorbing cotton ring and is distributed to other oil-absorbing strips. When the tooth end is meshed, it contacts the oil-absorbing strip of the adjacent tooth end. A lubricating oil channel can be opened inside the gear to facilitate the distribution of lubrication to the outer surface of each tooth end, so as to improve the contact fatigue resistance of the tooth surface and reduce the occurrence of gear breakage. The gear has good wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a wear-resistant gear of the present invention;

[0016] Figure 2 It is a cross-sectional view of a wear-resistant gear of the present invention;

[0017] Figure 3 It is the front view of the practical oil-absorbing strip;

[0018] Figure 4 It is a cross-sectional view of the tooth end of the present utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Alloy disc; 2. Tooth end; 3. Annular groove; 4. Diversion hole; 5. Oil-absorbing cotton ring; 6. Oil-absorbing strip; 7. Extension groove; 8. Extension strip; 9. Folding part; 10. Steel ring. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-4As shown, a wear-resistant gear comprises an alloy disk 1 and a plurality of tooth ends 2 integrally mounted on the outer side of the alloy disk 1, an annular groove 3 is provided inside the alloy disk 1, a plurality of diverter holes 4 are distributed along a circumferential array on the inner wall of the annular groove 3, the diverter holes 4 all penetrate the tooth end 2 along the radial direction of the alloy disk 1, the diverter holes 4 coincide with the central axis of the tooth end 2, an oil-absorbing cotton ring 5 is inserted inside the annular groove 3, a plurality of oil-absorbing strips 6 are distributed along a circumferential array outside the oil-absorbing cotton ring 5, both the oil-absorbing cotton ring 5 and the oil-absorbing strips 6 can be made of polyurethane sponge material, which can absorb oil and resist wear, one end of the oil-absorbing strips 6 are fixedly connected to the outer side of the oil-absorbing cotton ring 5, and the other end of the oil-absorbing strips 6 extend out of the tooth end 2 along the adjacent diverter holes 4. When the car starts, the gear rotation has to overcome the resistance of the oil, resulting in It causes power consumption, so the oil dipstick line in the gearbox should be lower than the center of the gear. When the gear rotates in the gearbox, the lower surface of the alloy plate 1 and part of the tooth end 2 are immersed in the lubricating oil, and part of the tooth ends 2 of two adjacent gears are meshed. Driven by the transmission shaft, the alloy plate 1 drives the tooth end 2, the oil-absorbing cotton ring 5 and the oil-absorbing strip 6 to rotate. When the tooth end 2 is immersed in the lubricating oil, it drives the oil-absorbing strip 6 to dip in the lubricating oil. The lubricating oil diffuses along the oil-absorbing cotton ring 5 and is distributed to other oil-absorbing strips 6. When the tooth end 2 is meshed, it will contact the oil-absorbing strip 6 of the adjacent tooth end 2. A lubricating oil channel can be opened inside the gear to facilitate the distribution of lubrication to the outer surface of each tooth end 2, so as to improve the contact fatigue strength of the tooth surface and reduce the occurrence of gear breakage. The gear has good wear resistance.

[0023] The surfaces of the alloy disk 1, the tooth end 2, the annular groove 3 and the diverter hole 4 are all carburized, and even the alloy disk 1 and the tooth end 2 can be made of super alloy material to improve the fatigue resistance of the entire gear. For the installation of the oil-absorbing cotton ring 5 and the oil-absorbing strip 6, the alloy disk 1 and the tooth end 2 can be divided into two along the cross-sectional surface, and the oil-absorbing cotton ring 5 and the oil-absorbing strip 6 can be installed and then re-welded into a whole.

[0024] like Figure 1 and Figure 2 As shown, an extension groove 7 is opened along the center line at one end of the tooth end 2 away from the alloy disk 1, and the extension grooves 7 are connected with the adjacent diversion holes 4. When the extension grooves 7 contact the adjacent oil absorption strips 6, the lubricating oil squeezed out of the adjacent oil absorption strips 6 can be temporarily stored, thereby extending the time that this part of the lubricating oil stays on the tooth end 2, so that the lubricating oil can be coated on the contact surface of the tooth end 2 as much as possible.

[0025] like Figure 1 and Figure 3 As shown, one end of the oil absorbing strip 6 extending out of the diversion hole 4 is integrally installed with two extension strips 8, the extension strips 8 and the oil absorbing strip 6 are made of the same material, the extension strips 8 are hidden inside the extension groove 7, and the lubricating oil in the oil absorbing strip 6 diffuses onto the extension strip 8, so that the lubricating oil has a larger coating surface at the adjacent tooth end 2, further expanding the lubrication effect.

[0026] like Figure 1 and Figure 3 As shown, the ends of two adjacent extension strips 8 that are away from each other are integrally installed with a folding portion 9, and the two adjacent folding portions 9 are respectively fixed on the two inclined surfaces on the outside of the tooth end 2. The lubricating oil in the extension strip 8 diffuses to the folding portion 9, so that the lubricating oil has a larger coating surface on the inclined surfaces of the adjacent tooth ends 2, further expanding the lubrication effect.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, a steel ring 10 is fixed to the inner wall of the annular groove 3, and the outer side of the steel ring 10 is bonded to the inner side of the oil-absorbing cotton ring 5, which is used to fix the oil-absorbing cotton ring 5, resist the centrifugal force on the oil-absorbing cotton ring 5 when the gear rotates, and prevent the oil-absorbing cotton ring 5 from escaping from the annular groove 3 and entering the diversion hole 4.

[0028] like Figure 2 and Figure 4 As shown, the edges of the diversion holes 4 are all rounded, and the arc surface is used to support the oil absorbing strip 6 to prevent the oil absorbing strip 6 from being cut by the sharp edges, so that the oil absorbing strip 6 can be kept intact.

[0029] The working principle of the utility model is as follows: when the gear rotates in the gearbox, the lower surface of the alloy plate 1 and part of the tooth end 2 are immersed in the lubricating oil, and part of the tooth ends 2 of two adjacent gears are meshed. Driven by the transmission shaft, the alloy plate 1 drives the tooth end 2, the oil-absorbing cotton ring 5 and the oil-absorbing strip 6 to rotate. When the tooth end 2 is immersed in the lubricating oil, it drives the corresponding oil-absorbing strip 6 to dip in the lubricating oil. The lubricating oil diffuses along the oil-absorbing cotton ring 5 and is distributed to other oil-absorbing strips 6. When the tooth end 2 is meshed, it will contact the oil-absorbing strip 6 of the adjacent tooth end 2. A lubricating oil channel can be opened inside the gear to facilitate the distribution of lubrication to the outer surface of each tooth end 2, so as to improve the contact fatigue strength of the tooth surface and reduce the occurrence of gear breakage.

[0030] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A wear-resistant gear, comprising an alloy plate (1) and a plurality of tooth ends (2) integrally mounted on the outer side of the alloy plate (1), characterized in that: An annular groove (3) is provided inside the alloy disk (1), and a plurality of diversion holes (4) are distributed along a circumferential array on the inner wall of the annular groove (3). The diversion holes (4) all penetrate the tooth end (2) along the radial direction of the alloy disk (1), and the diversion holes (4) coincide with the center axis of the tooth end (2). An oil-absorbing cotton ring (5) is inserted inside the annular groove (3), and a plurality of oil-absorbing strips (6) are distributed along a circumferential array outside the oil-absorbing cotton ring (5). One end of the oil-absorbing strips (6) is fixedly connected to the outer side of the oil-absorbing cotton ring (5), and the other end of the oil-absorbing strips (6) extends out of the tooth end (2) along the adjacent diversion holes (4).

2. The wear-resistant gear according to claim 1, characterized in that: An extension groove (7) is provided along the center line of the tooth end (2) at one end away from the alloy disk (1), and the extension groove (7) is communicated with an adjacent diversion hole (4).

3. A wear-resistant gear according to claim 2, characterized in that: One end of the oil absorbing strip (6) extending out of the diversion hole (4) is integrally mounted with two extension strips (8), and the extension strips (8) are both hidden inside the extension groove (7).

4. The wear-resistant gear according to claim 3, characterized in that: The ends of two adjacent extension strips (8) that are away from each other are both integrally mounted with folding portions (9), and the two adjacent folding portions (9) are respectively fixed to two inclined surfaces outside the tooth end (2).

5. The wear-resistant gear according to claim 1, characterized in that: A steel ring (10) is fixed to the inner wall of the annular groove (3), and the outer side of the steel ring (10) is bonded to the inner side of the oil-absorbing cotton ring (5).

6. The wear-resistant gear according to claim 1, characterized in that: The edges of the diversion holes (4) are all rounded.

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