Gearbox gear

Abstract

The utility model provides a gearbox gear, which relates to the field of gears, and comprises a gear body, gear teeth distributed on the circumference of the excircle surface of the gear body at equal angles, and a tooth groove between every two adjacent gear teeth. A first annular groove is formed in the end face of one side of the gear body, a baffle is elastically connected to the first annular groove, a plurality of springs are arranged at the bottoms of the baffle and the first annular groove, a bearing hole is formed in the center of the gear body, and the center lines of the bearing hole, the dog tooth shaft and the gear tooth body coincide. The first annular groove is formed in the end face of the side, close to the dog teeth, of the gear body, the baffle is elastically connected into the first annular groove, and in the process that the gear shifting fork is manually shifted to drive the sleeve to be meshed with the dog teeth, axial force of the sleeve to the gear is reduced, and the stability of the gear is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of gearbox gears, in particular to a gearbox gear. Background Art

[0002] The gearbox is a gear transmission device that can fix or change the transmission ratio of the output shaft and the input shaft in stages. The transmission gear is also the general speed-changing gear. The main function of the gearbox gear is power output. The gearbox gear has high precision requirements, and its own materials and structure have strong load resistance and toughness. The maintenance of the gearbox gear includes checking the fastening of the relevant parts of the gearbox gear; cleaning the gearbox regularly and replacing the gear oil; regularly checking the sealing integrity of the oil seals and gasket paperboards, and replacing them when necessary.

[0003] The gearbox is divided into manual or automatic gearbox. In the manual gearbox, as the name implies, the gear shifting and transmission output are achieved by manually shifting the shift fork to drive the sleeve to engage with the idle gear (the sleeve and the dog teeth of the gear engage with each other);

[0004] The above-mentioned gear includes a gear body, gear teeth, dog teeth, etc. The inventor has found that the existing gearbox gear structure design tends to be traditional, has low strength in use, is easy to damage, and the heat generated by the friction of the gear teeth is not easy to dissipate. In addition, the sleeve is also prone to cause axial impact force on the gear during the engagement process with the dog teeth. Therefore, this case was born. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a gearbox gear, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: a gearbox gear, including a gear body, gear teeth arranged at equal angles on the outer circumference of the gear body, tooth grooves between adjacent gear teeth, one end face of the gear body is a dog gear shaft, and dog teeth are arranged at equal angles on the outer surface of the dog gear shaft: an annular groove is provided on one end face of the gear body, a baffle is elastically connected to the annular groove, a number of springs are installed on the baffle and the bottom of the annular groove, a bearing hole is provided in the center of the gear body, and the bearing hole, the dog gear shaft, and the center line of the gear body coincide.

[0009] Preferably, a second annular groove is provided on the end face of the other side of the gear body, an oil storage groove is provided on the second annular groove near the center of the bearing hole, a plurality of oil guide plates are arranged at equal angles on the circumference of the oil storage groove, the oil guide plates are arc-shaped, an oil hole is provided on the speed search gear groove, and the oil hole is between two connected oil guide plates.

[0010] Preferably, the number of the oil guide plates corresponds to the number of gear teeth, and the inner arc surface of the oil guide plate is aligned with the rotation direction of the gear.

[0011] Preferably, the oil through hole is arc-shaped, and the direction of the arc is consistent with that of the oil guide plate.

[0012] Preferably, the end face of the gear tooth is provided with a reinforcing rib, and the side edge of the reinforcing rib is chamfered.

[0013] Preferably, the front and rear end surfaces of the dog teeth are chamfered.

[0014] (III) Beneficial effects

[0015] The utility model provides a gearbox gear, which has the following beneficial effects:

[0016] 1. The gearbox gear has an annular groove 1 formed on the end face of the gear body close to the dog teeth, a baffle is elastically connected in the annular groove 1, and the shift fork is manually moved to drive the sleeve to mesh with the dog teeth, thereby reducing the axial force of the sleeve on the gear and protecting the stability of the gear;

[0017] 2. The gear of the gearbox has a second annular groove on one side of the principle dog tooth of the gear body, and a second oil storage groove is arranged in the center of the second annular groove. Arc-shaped oil guide plates are arranged at equal angles on the circumference of the second oil storage groove. An oil groove is arranged in the tooth groove, so that when the gear rotates, the gear oil at the bottom of the gearbox is splashed upward through the oil guide plate to achieve the effect of lubricating and cooling other gears. At the same time, the gear oil can also be thrown out through the oil groove under the action of centrifugal force, which accelerates the flow of the gear oil, plays a role in lubricating the gear and improving the heat dissipation effect of the gear;

[0018] 3. The gearbox gear has enhanced the strength of the gear teeth, reduced the gear damage rate and increased the gear life by adding reinforcing ribs on the end faces of the gear teeth;

[0019] 4. The gearbox gear has chamfers at both ends of the dog teeth to facilitate engagement with the sleeve and make gear shifting smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a gearbox gear structure of the utility model Figure 1 ;

[0021] Figure 2 This is a schematic diagram of a gearbox gear structure of the utility model Figure 2 ;

[0022] Figure 3 This is a schematic cross-sectional view of a gearbox gear of the utility model;

[0023] Figure 4 It is a left side schematic diagram of a gearbox gear of the utility model.

[0024] In the figure: 1. gear body; 2. gear teeth; 3. dog gear shaft; 4. dog teeth; 5. ring groove 1; 6. baffle; 7. spring; 8. bearing hole; 9. chamfer; 10. ring groove 2; 11. oil storage groove; 12. oil guide plate; 13. tooth groove; 14. oil hole; 15. reinforcing rib. DETAILED DESCRIPTION

[0025] The utility model embodiment provides a gearbox gear, such as Figure 1-4 As shown, it includes a gear body 1, gear teeth 2 arranged at equal angles on the outer circumferential surface of the gear body 1, and tooth grooves 13 between adjacent gear teeth 2. One end face of the gear body 1 is a dog gear shaft 3, and dog teeth 4 are arranged at equal angles on the outer surface of the dog gear shaft 3: an annular groove 5 is provided on one end face of the gear body 1, and a baffle 6 is elastically connected to the annular groove 5. A plurality of springs 7 are installed at the baffle 6 and the bottom of the annular groove 5. A bearing hole 8 is provided at the center of the gear body 1, and the center lines of the bearing hole 8, the dog gear shaft 3, and the gear tooth 2 body coincide with each other. In the accompanying drawings, the gear in this case is a spur gear. In order to reduce noise, the gear can be manufactured into a helical gear, and the baffle 6 is elastically connected in the annular groove 5. The shift fork is manually turned to drive the sleeve to engage with the dog teeth 4, thereby reducing the axial force of the sleeve on the gear and protecting the stability of the gear.

[0026] like Figure 2 and 3 As shown, a second annular groove 10 is provided on the other side end surface of the gear body 1, and an oil storage groove 11 is provided near the center of the bearing hole 8. A plurality of oil guide plates 12 are arranged at equal angles on the circumference of the oil storage groove 11, and the oil guide plates 12 are arc-shaped. An oil through hole 14 is provided on the gear groove 13, and the oil through hole 14 is between two connected oil guide plates 12. The oil guide plates 12 have two functions, the first is to splash the gear oil at the bottom of the gearbox upward, and the second is to throw the gear oil in the oil storage groove 11 out through the oil through hole 14 under the action of centrifugal force.

[0027] like Figure 3 As shown, in one embodiment of the above technical solution, the number of oil guide plates 12 can correspond to the number of gear teeth 2, and the inner arc surface of the oil guide plate 12 is aligned with the rotation direction of the gear, so that the oil guide plate 12 has a better oil storage and oil guiding effect.

[0028] like Figure 3As shown, in order to allow the gear oil to be thrown out through the oil guide plate 12 through the oil through hole 14 under the action of centrifugal force, thereby cooling and lubricating the gear teeth 2, the oil through hole 14 in the embodiment is arc-shaped, and its arc direction is consistent with the oil guide plate 12.

[0029] Furthermore, in order to improve the strength of the gear tooth 2 , a reinforcing rib 15 is provided on the end surface of the gear tooth 2 , and a chamfer 9 is provided on the side of the reinforcing rib 15 .

[0030] In order to make the engagement and separation between the sleeve and the dog teeth 4 smoother and reduce wear, as Figure 1 As shown, chamfers 9 are provided on the front and rear end surfaces of the dog teeth 4 .

[0031] Working principle: The gearbox (existing technology) is a gear transmission device that can fix or change the transmission ratio of the output shaft and the input shaft. It is composed of a transmission mechanism and a speed change mechanism, which generally include an input shaft, an output shaft, an intermediate shaft, and gears mounted on the input shaft, the intermediate shaft and the output shaft. The gearbox generally adopts a two-axis or three-axis type. According to the speed range of the gearbox, it can be divided into a five-speed type, a six-speed type, etc. These gearboxes are provided with multiple meshing gears, and the speed and torque of the gears in different gears are also different. The modified gear in this case is applied to a manual gearbox. Taking the manual gearbox as an example, by manually shifting the shift fork, the sleeve is driven to mesh with the idling gear (the sleeve is meshed with the dog teeth 4 of the gear) to achieve gear shifting and transmission output; the gear bearing hole 8 is rotatably connected to the power output shaft by installing a needle bearing, and the gear and the gear on the intermediate shaft are connected. The two gears are meshed with each other. When the gear is not engaged, the gear is in an idling state. When the shift fork is manually turned to drive the sleeve to mesh with the idling gear (the sleeve is meshed with the dog teeth 4 of the gear), gear shifting is achieved and transmission output is achieved. The baffle 6 is elastically connected in the ring groove 5 to reduce the axial force of the sleeve on the gear. At the same time, when the gear is rotating, the gear oil at the bottom of the gearbox is splashed upward through the oil guide plate 12 to achieve the effect of lubricating and cooling other gears. At the same time, the gear oil can also be thrown out through the oil groove under the action of centrifugal force to lubricate the gear and improve the heat dissipation effect of the gear. In summary, the gearbox gear has an annular groove 5 formed on the end face of the gear body 1 close to the dog teeth 4, a baffle 6 is elastically connected in the annular groove 5, and the shift fork is manually turned to drive the sleeve to engage with the dog teeth 4, thereby reducing the axial force of the sleeve on the gear and protecting the stability of the gear; the gearbox gear has an annular groove 10 formed on one side of the gear body 1 close to the dog teeth 4, an oil storage groove 11 is arranged at the center of the annular groove 10, arc-shaped oil guide plates 12 are arranged at equal angles on the circumference of the oil storage groove 11, and an oil groove is formed in the tooth groove 13, so that during the rotation of the gear, the gear oil at the bottom of the gearbox is splashed upward through the oil guide plate 12, thereby achieving the effect of lubricating and cooling other gears. At the same time, the gear oil can also be thrown out through the oil groove under the action of centrifugal force, thereby lubricating the gear and improving the heat dissipation of the gear.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox gear, comprising a gear body (1), gear teeth (2) arranged at equal angles on the outer circumference of the gear body (1), tooth grooves (13) between adjacent gear teeth (2), one end surface of the gear body (1) being a dog gear shaft (3), dog teeth (4) arranged at equal angles on the outer surface of the dog gear shaft (3), characterized in that: A ring groove (5) is provided on one end surface of the gear body (1), a baffle (6) is elastically connected to the ring groove (5), a plurality of springs (7) are arranged between the baffle (6) and the bottom of the ring groove (5), a bearing hole (8) is provided at the center of the gear body (1), and the center lines of the bearing hole (8), the dog gear shaft (3) and the gear body (1) coincide with each other.

2. A gearbox gear according to claim 1, characterized in that: The end surface of the other side of the gear body (1) is provided with a second annular groove (10), the second annular groove (10) is provided with an oil storage groove (11) near the center of the bearing hole (8), a plurality of oil guide plates (12) are arranged at equal angles on the circumference of the oil storage groove (11), the oil guide plates (12) are arc-shaped, an oil through hole (14) is provided on the speed search tooth groove (13), and the oil through hole (14) is between two connected oil guide plates (12).

3. A gearbox gear according to claim 2, characterized in that: The number of the oil guide plates (12) corresponds to the number of the gear teeth (2), and the inner arc surface of the oil guide plate (12) is aligned with the rotation direction of the gear.

4. A gearbox gear according to claim 2, characterized in that: The oil through hole (14) is arc-shaped, and its arc direction is consistent with that of the oil guide plate (12).

5. The gearbox gear according to claim 1, characterized in that: The end surface of the gear tooth (2) is provided with a reinforcing rib (15), and the side edge of the reinforcing rib (15) is chamfered.

6. The gearbox gear according to claim 1, characterized in that: The front and rear end surfaces of the dog teeth (4) are provided with chamfers (9).

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