Driving roller

Abstract

The utility model discloses a driving roller which comprises a driving tooth, the driving tooth is in a wheel shape, meshing teeth are evenly distributed in the circumferential direction of the driving tooth, the tooth root portion of each meshing tooth is provided with a fillet tooth root, and each fillet tooth root is a protrusion protruding outwards. The driving teeth are meshed with the track, the driving teeth are driven in a variable speed mode, the track is driven to rotate, and therefore a vehicle runs forwards; the bottom of the middle tooth of the driving tooth is provided with a fillet tooth root protruding outwards, the middle of the two sides of the crawler belt is provided with a metal buckle, the metal buckle is meshed with the fillet tooth root of the driving tooth, the transmission efficiency is high, and transmission is stable. Under the condition that the maximum vehicle speed is 120 Km / h, the driving teeth and the crawler belt are rapidly meshed and rotate, transmission is stable, and the requirement for high-speed transmission is well met.

Description

Technical Field

[0001] The utility model relates to the technical field of crawler drive, and more specifically, it relates to a drive roller. Background Art

[0002] In the existing drive roller and crawler transmission mechanism, the crawler is driven to run solely by teeth being embedded in holes, resulting in poor meshing rotation effect and instability, especially not suitable for high-speed movement.

[0003] The utility model patent with the application number 202323038646.2 discloses a crawler-type walking chassis applicable to hilly and mountainous areas. The crawler walking mechanism includes a drive wheel 8 and a tensioning device. The crawler 1 adopts a wheel-tooth type rubber crawler, and drive teeth are arranged inside the crawler. The drive wheel 8 is arranged above the front chassis 3, and drive holes are arranged on the outer edge of the drive wheel 8. The drive teeth on the crawler are embedded into the drive holes, enabling the drive wheel 8 to mesh with the crawler 1 for transmission, thereby transmitting power to the crawler to generate a driving force for the movement of the entire chassis and ensuring smooth meshing to achieve stable transmission of the crawler chassis. In this application, the drive wheel 8 and the crawler 1 are only meshed through teeth and drive holes, with a simple structure and poor transmission efficiency.

[0004] The utility model patent with the application number 202311334479.8 discloses a walking device and construction machinery. The walking device <100> includes a crawler <140> and a support drive structure <180>. Among them, the crawler <140> is usually an oval chain link. The inner side of the crawler <140> is the middle part of the chain link ring, and the outer side of the crawler <140> is the outer part of the chain link ring. The support drive structure <180> can drive the crawler <140> to operate. Specifically, the support drive structure <180> includes a walking frame body <110> and a carrier roller <150>. The walking frame body <110> mainly serves as an installation carrier, and the carrier roller <150> is rotatably connected to the top of the walking frame body <110>. The carrier roller <150> is rotatably connected to the walking frame body <110>, that is, the carrier roller <150> can rotate relative to the walking frame body <110>. Further, the carrier roller <150> meshes with the crawler <140>. It can be understood that the carrier roller <150> includes multiple tooth structures, and the crawler <140> includes multiple groove structures <141>. The tooth structures in the carrier roller <150> mesh with the groove structures <141> in the crawler <140>. This application also has a single tooth structure and groove structure <141>, with a simple structure, unreasonable mechanical structure, and poor transmission effect. Utility Model Content

[0005] To solve the above technical problems, the utility model provides a drive roller, which includes drive teeth. The drive teeth are in a wheel shape, and meshing teeth are evenly distributed in the circumferential direction of the drive teeth. A rounded tooth root is provided at the tooth root of the meshing teeth, and the rounded tooth root is a protruding bulge.

[0006] Preferably, it further includes a crawler belt, and the driving teeth are meshed and connected with the crawler belt; the axial middle position of the meshing teeth is an intermediate tooth protruding radially outward; correspondingly, the crawler belt is provided with limiting holes.

[0007] Preferably, a metal buckle is provided between the limiting holes, the metal buckle is coated on the inner surface of the crawler belt, and the metal buckle is meshed with the rounded tooth roots.

[0008] Preferably, crawler belt inner teeth are provided on both sides of the metal buckle, and the crawler belt inner teeth protrude toward the inner side of the crawler belt; correspondingly, depressions are provided on both sides of the connecting portion between adjacent intermediate teeth.

[0009] The drive shaft is located at the center of the driving teeth, and the drive shaft and the driving teeth are fixedly connected together.

[0010] Preferably, driving teeth are respectively installed on both sides of the drive shaft, and the driving teeth are respectively meshed with both sides of the crawler belt.

[0011] Preferably, an axial inner hole is provided at the center of the driving teeth, the inner hole is a spline structure, and is press-fitted and clamped on the drive shaft.

[0012] Preferably, the interference amount between the inner hole of the driving teeth and the drive shaft is less than or equal to 1.15 mm.

[0013] Preferably, the number of the meshing teeth on the driving teeth is such that the table surfaces on both axial sides of the intermediate teeth are arc surfaces centered on the central axis of the driving tooth 1.

[0014] Preferably, the driving teeth are integrally formed.

[0015] Beneficial effects:

[0016] A driving roller of the present utility model includes driving teeth and a crawler belt. The driving teeth are meshed with the crawler belt, the driving teeth are driven variably to drive the crawler belt to rotate, so that the vehicle moves forward. The bottom of the intermediate teeth of the driving teeth is provided with rounded tooth roots protruding outward; metal buckles are provided in the middle of both sides of the crawler belt, the metal buckles are coated on the inner surface of the middle of both sides of the crawler belt, limiting holes are provided between adjacent metal buckles, and crawler belt inner teeth are provided on both sides of the metal buckles; when the driving teeth roll, the sunken surface first contacts the crawler belt inner teeth, and then continues to rotate. The metal buckles on the crawler belt contact the rounded tooth roots of the driving teeth. After the contact is fully engaged, the crawler belt rotates forward along with the driving teeth, the front intermediate teeth disengage from the crawler belt, and the rear intermediate teeth enter the limiting holes of the crawler belt; in the present utility model, the intermediate teeth are meshed with the limiting holes, and the metal buckles are engaged with the rounded tooth roots of the driving teeth, with high transmission efficiency and stable transmission.

[0017] At a maximum vehicle speed of 120 Km / h, the driving teeth and the crawler belt are quickly meshed and rotated, with stable transmission and not prone to failure. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural view of a driving gear.

[0019] Figure 2 It is a schematic structural view of a driving shaft.

[0020] Figure 3 It is a schematic structural view of the connection between the driving gear and the driving shaft.

[0021] Figure 4 It is a partial view of the crawler belt.

[0022] Figure 5 It is a schematic structural view of a metal buckle.

[0023] In the figure: 1. Driving gear, 11. Intermediate tooth, 12. Rounded tooth root, 13. Depression, 14. Table surface, 15. Internal spline, 16. Connection part, 2. Crawler belt, 21. Inner tooth of crawler belt, 22. Metal buckle, 221. Flat part, 222. Hook part, 23. Limit hole, 24. Intermediate part, 25. Convex rib, 3. Driving shaft, 31. External spline, 32. Through hole. Specific embodiments

[0024] The technical solution of the present utility model will be further specifically described below through specific embodiments in combination with the accompanying drawings.

[0025] Embodiment 1: As shown in Figure 1 , 4 , and 5, the present utility model discloses a driving roller, which includes a driving gear 1. The driving gear 1 is wheel-shaped, and meshing teeth are evenly distributed in the circumferential direction of the driving gear 1. A rounded tooth root 12 is provided at the tooth root of the meshing teeth, and the rounded tooth root 12 is a convex protrusion protruding outward.

[0026] The driving roller further includes a crawler belt 2. The driving gear 1 is meshed and connected with the crawler belt 2. The axial middle position of the meshing teeth is an intermediate tooth 11 protruding radially outward. Corresponding to the intermediate tooth 11, a limit hole 23 is provided on the crawler belt 2.

[0027] Metal buckles 22 are provided between the limit holes 23. The metal buckles 22 are coated on the inner surface of the crawler belt 2, and the metal buckles 22 are meshed with the rounded tooth roots 12.

[0028] Inner teeth 21 of the crawler belt are provided on both sides of the metal buckle 22. The inner teeth 21 of the crawler belt protrude toward the inside of the crawler belt 2. Corresponding to the inner teeth 21 of the crawler belt, a connection part 16 is provided between adjacent intermediate teeth 11, and depressions 13 are provided on both sides of the connection part 16. The intermediate part 24 between the inner teeth 21 of the crawler belt is a plane, and a convex rib 25 is provided on the outside of the crawler belt 2.

[0029] The number of meshing teeth on the driving gear 1 is 8, and the table surfaces 14 on both axial sides of the intermediate tooth 11 are arc surfaces centered on the central axis of the driving gear 1.

[0030] The driving gear 1 is integrally formed.

[0031] A driving roller of the present utility model includes a driving gear 1 and a crawler 2. The driving gear 1 is made of black special plastic with a density of 1.0 - 1.05 cm³ / g. The center of the top of the driving gear 1 is provided with an intermediate tooth 11, and the number of intermediate teeth 11 is 8, which are evenly distributed along the circumference of the circle.

[0032] The driving gear 1 meshes with the crawler 2. The driving gear 1 is variably driven, and the crawler 2 is driven to rotate, so that the vehicle moves forward.

[0033] At the bottom of the intermediate tooth 11 of the driving gear 1, there is a rounded tooth root 12 protruding outward; in the middle of both sides of the crawler 2, there are metal fasteners 22. The metal fasteners 22 include a flat part 221 and hook parts 222 on both sides. The metal fasteners 22 are coated on the inner surface of the middle of both sides of the crawler 2. There are limiting holes 23 between adjacent metal fasteners 22. On both sides of the metal fasteners 22, there are crawler inner teeth 21, and the crawler inner teeth 21 extend towards the inner side of the crawler 2; on both sides between adjacent intermediate teeth 11, there are depressions 13 adapted to the crawler inner teeth 21; when the driving gear 1 rolls, the surface of the depression first contacts the crawler inner teeth 21, and then continues to rotate. The metal fasteners 22 on the crawler 2 contact the rounded tooth root 12 of the driving gear 1. After the contact is completely engaged, the crawler 2 rotates forward along with the driving gear 1. The front intermediate tooth 11 disengages from the crawler, and the rear intermediate tooth 11 enters the limiting hole 23 of the crawler. Of course, the pitch of both needs to be synchronized to complete this operation.

[0034] When the maximum vehicle speed is 120 Km / h, the driving gear and the crawler mesh and rotate quickly. The roller material needs to be very wear-resistant and has a particularly high hardness requirement.

[0035] Embodiment 2: As Figures 1-3 shown, the present utility model discloses a driving roller, including a driving gear 1. The driving gear 1 is wheel-shaped, and meshing teeth are evenly distributed in the circumferential direction of the driving gear 1. At the tooth root of the meshing teeth, there is a rounded tooth root 12, and the rounded tooth root 12 is a protruding convex.

[0036] On both sides of the part between adjacent intermediate teeth 11, there are depressions 13.

[0037] The driving roller further includes a driving shaft 3. The driving shaft 3 is located at the axis of the driving gear 1, and the driving shaft 3 and the driving gear 1 are fixedly connected together.

[0038] The driving shaft 3 is provided with an external spline 31. The driving shaft 3 is of a hollow structure, and through holes 32 are provided at both ends of the driving shaft 3. The through holes 32 are used for socketing and positioning with a connecting shaft.

[0039] Drive teeth 1 are respectively installed on both sides of the drive shaft 3.

[0040] An axial inner hole is provided at the center of the drive tooth 1. The inner hole is of a spline structure and is press-fitted and clamped on the drive shaft 3.

[0041] The interference fit between the inner hole of the drive tooth 1 and the drive shaft is less than or equal to 1.15 mm.

[0042] The number of meshing teeth on the drive tooth 1 is 8, and the table surfaces 14 on both axial sides of the intermediate tooth 11 are arc surfaces centered on the central axis of the drive tooth 1.

[0043] The drive tooth 1 is integrally formed.

[0044] A drive roller of the present utility model includes a drive tooth 1 and a drive shaft 3. The drive tooth 1 is made of a black special plastic with a density of 1.0 - 1.05 cm3 / g. An intermediate tooth 11 is provided at the center of the top of the drive tooth 1, and the number of intermediate teeth 11 is 8 and they are evenly distributed along the circumference of the circle; an axial inner hole is provided at the center of the drive tooth 1, and an internal spline 15 is provided in the inner hole. The drive tooth 1 is press-fitted and clamped on the drive shaft 3.

[0045] The drive tooth 1 and the drive shaft 3 are in interference fit. On the premise that the gear is required to meet the torque requirement and not exceed the maximum stress, the maximum interference fit is finally selected. From the calculation results, when the interference fit is 1.15 mm, the maximum stress is close to the index. Therefore, it is recommended that the upper limit of the interference fit is not greater than 1.15 mm.

[0046] A rounded tooth root 12 protruding outward is provided at the bottom of the intermediate tooth 11 of the drive tooth 1; depressions 13 are provided on both sides between adjacent intermediate teeth 11. The drive teeth 1 are respectively provided at the left and right ends of the drive shaft 3. One end of the drive shaft 3 is connected to a gearbox, and a bearing is provided at the connection end of the drive shaft 3 and the gearbox.

[0047] Example 3: As Figures 1-5 shown, the present utility model discloses a drive roller, including a drive tooth 1. The drive tooth 1 is in a wheel shape, and meshing teeth are evenly distributed in the circumferential direction of the drive tooth 1. A rounded tooth root 12 is provided at the tooth root of the meshing tooth, and the rounded tooth root 12 is a protruding projection.

[0048] The drive roller further includes a crawler 2. The drive tooth 1 is meshingly connected with the crawler 2; the axial middle position of the meshing tooth is an intermediate tooth 11 protruding radially outward; correspondingly, a limiting hole 23 is provided on the crawler 2.

[0049] Metal fasteners 22 are provided between the limiting holes 23. The metal fasteners 22 are coated on the inner surface of the crawler 2, and the metal fasteners 22 and the rounded tooth roots 12 are meshed with each other.

[0050] Both sides of the metal buckle 22 are provided with inner teeth 21 of the track, and the inner teeth 21 of the track protrude towards the inside of the track 2; correspondingly, both sides of the part between adjacent intermediate teeth 11 are provided with depressions 13.

[0051] The drive roller further includes a drive shaft 3, the drive shaft 3 is located at the axis of the drive tooth 1, and the drive shaft 3 and the drive tooth 1 are fixedly connected together.

[0052] Drive teeth 1 are respectively installed on both sides of the drive shaft 3, and the drive teeth 1 are respectively meshed with both sides of the track 2.

[0053] An axial inner hole is provided at the center of the drive tooth 1, the inner hole is a spline structure, and it is press-fitted and clamped on the drive shaft 3.

[0054] The interference amount between the inner hole of the drive tooth 1 and the drive shaft is less than or equal to 1.15 mm.

[0055] The number of meshing teeth on the drive tooth 1 is 8, and the two axial sides of the intermediate tooth 11 are arc surfaces centered on the central axis of the drive tooth 1.

[0056] The drive tooth 1 is integrally formed.

[0057] A drive roller of the present utility model includes a drive tooth 1, a track 〔2〕, and a drive shaft 3. The drive tooth 1 is made of black special plastic with a density of 1.0 - 1.05 cm3 / g. The center of the top of the drive tooth 1 is provided with an intermediate tooth 11, and the number of intermediate teeth 11 is 8 and they are evenly distributed along the circumference of the circle; an axial inner hole is provided at the center of the drive tooth 1, the inner hole is a spline structure, and it is press-fitted and clamped on the drive shaft.

[0058] The drive tooth 1 is meshed with the track 2, the drive tooth 1 is driven variably, and the track 2 is driven to rotate, so that the vehicle moves forward.

[0059] The drive tooth 1 and the drive shaft 3 are in interference fit. On the premise that the gear is required to meet the torque requirement and not exceed the maximum stress, the maximum interference amount is finally selected. From the calculation results, when the interference amount is 1.15 mm, the maximum stress is close to the index, so it is recommended that the upper limit of the interference amount is not greater than 1.15 mm.

[0060] At the bottom of the middle tooth 11 of the driving tooth 1, there is a rounded tooth root 12 protruding outward; in the middle of both sides of the crawler 2, there are metal buckles 22. The metal buckles 22 are coated on the inner surface of the middle of both sides of the crawler 2. There are limiting holes 23 between adjacent metal buckles 22. On both sides of the metal buckles 22, there are inner crawler teeth 21, and the inner crawler teeth 21 extend towards the inner side of the crawler 2; on both sides between adjacent middle teeth 11, there are depressions adapted to the inner crawler teeth 21; when the driving tooth 1 rolls, the surface of the depression first contacts the inner crawler teeth 21, and then continues to rotate. The metal buckle 22 on the crawler 2 contacts the rounded tooth root 12 of the driving tooth 1. After the contact is fully engaged, the crawler 2 rotates forward along with the driving tooth 1. The front middle tooth 11 disengages from the crawler, and the rear middle tooth 11 enters the limiting hole 23 of the crawler. Of course, the pitch of the two must be synchronized to complete this operation.

[0061] The driving teeth 1 are respectively arranged at the left and right ends of the driving shaft 3. The two driving teeth 1 are respectively meshed and connected with both sides of the crawler 2. One end of the driving shaft 3 is connected to the gearbox, and a bearing is provided at the connection end of the driving shaft 3 and the gearbox.

[0062] Example 4: As Figure 1 shown, the present utility model discloses a driving roller, including a driving tooth 1. The driving tooth 1 is wheel-shaped, and meshing teeth are circumferentially and evenly distributed on the driving tooth 1. At the tooth root of the meshing teeth, there is a rounded tooth root 12, and the rounded tooth root 12 is a protruding bulge outward.

[0063] The axial middle position of the meshing teeth is a middle tooth 11 protruding radially outward.

[0064] The part between adjacent middle teeth 11 is a connecting part 16, and depressions 13 are provided on both sides of the connecting part 16.

[0065] The number of meshing teeth on the driving tooth 1 is 8, and the two side surfaces 14 of the middle tooth 11 axially are arc surfaces with the central axis of the driving tooth 1 as the center of the circle.

[0066] The driving tooth 1 is integrally formed.

[0067] A driving roller of the present utility model includes a driving tooth 1. The driving tooth 1 is made of black special plastic with a density of 1.0 - 1.05 cm3 / g. At the center of the top of the driving tooth 1, there is a middle tooth 11, and the number of middle teeth 11 is 8, which are evenly distributed along the circumference of the circle.

[0068] At the bottom of the middle tooth 11 of the driving tooth 1, there is a rounded tooth root 12 protruding outward; depressions 13 are provided on both sides between adjacent middle teeth 11.

[0069] Example 5:

[0070] The utility model discloses a driving roller, which comprises a driving tooth 1. The driving tooth 1 is wheel-shaped, and meshing teeth are evenly distributed in the circumferential direction of the driving tooth 1. A rounded tooth root 12 is provided at the tooth root of the meshing tooth, and the rounded tooth root 12 is a protruding projection.

[0071] The driving roller further comprises a crawler 2, and the driving tooth 1 is meshed and connected with the crawler 2; the middle position in the axial direction of the meshing tooth is an intermediate tooth 11 protruding radially outwards; correspondingly, a limiting hole 23 is provided on the crawler 2.

[0072] Metal buckles 22 are provided between the limiting holes 23. The metal buckles 22 are coated on the inner surface of the crawler 2, and the metal buckles 22 are meshed with the rounded tooth roots 12.

[0073] The driving roller further comprises a driving shaft 3. The driving shaft 3 is located at the axis center of the driving tooth 1, and the driving shaft 3 and the driving tooth 1 are fixedly connected together.

[0074] Driving teeth 1 are respectively installed on both sides of the driving shaft 3, and the driving teeth 1 are respectively meshed with both sides of the crawler 2.

[0075] An axial inner hole is provided at the center of the driving tooth 1. The inner hole is provided with an internal spline, and the driving tooth 1 is press-fitted and clamped on the driving shaft 3.

[0076] The interference amount between the inner hole of the driving tooth 1 and the driving shaft is less than or equal to 1.15 mm.

[0077] The number of meshing teeth on the driving tooth 1 is 8, and the two side surfaces 14 in the axial direction of the intermediate tooth 11 are arc surfaces centered on the central axis of the driving tooth 1.

[0078] The driving tooth 1 is integrally formed.

[0079] A driving roller of the utility model comprises a driving tooth 1, a crawler 2 and a driving shaft 3. The driving tooth 1 is made of black special plastic with a density of 1.0 - 1.05 cm3 / g. An intermediate tooth 11 is provided at the center of the top of the driving tooth 1, and the number of the intermediate teeth 11 is 8 and they are evenly distributed along the circumferential direction of the circle; an axial inner hole is provided at the center of the driving tooth 1, the inner hole is of a spline structure and is press-fitted and clamped on the driving shaft.

[0080] The driving tooth 1 is meshed with the crawler 2, and the driving tooth 1 is driven variably to drive the crawler 2 to rotate, so as to make the vehicle move forward.

[0081] The driving tooth 1 and the driving shaft 3 are in interference fit. On the premise that the gear is required to meet the torque requirement and not exceed the maximum stress, the maximum interference amount is finally selected. From the calculation results, when the interference amount is 1.15 mm, the maximum stress is close to the index, so it is recommended that the upper limit of the interference amount is not greater than 1.15 mm.

[0082] At the bottom of the middle tooth 11 of the driving tooth 1, there is a rounded tooth root 12 protruding outwards; in the middle of both sides of the crawler 2, there are metal buckles 22, and the metal buckles 22 are coated on the inner surfaces in the middle of both sides of the crawler 2. There are limiting holes 23 between adjacent metal buckles 22; when the driving tooth 1 rolls, the middle tooth 11 enters the limiting holes 23 of the crawler. The metal buckles 22 on the crawler 2 contact the rounded tooth root 12 of the driving tooth 1. After the contact is fully engaged, the crawler 2 rotates forward along with the driving tooth 1. The front middle tooth 11 disengages from the crawler, and the rear middle tooth 11 enters the limiting holes 23 of the crawler. Of course, the pitch of the two needs to be synchronized to complete this operation process.

[0083] The driving teeth 1 are respectively arranged at the left and right ends of the driving shaft 3. The two driving teeth 1 are respectively meshed and connected with both sides of the crawler 2. One end of the driving shaft 3 is connected to the gearbox, and a bearing is provided at the connection end of the driving shaft 3 and the gearbox.

[0084] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A driving roller, characterized in that: The invention comprises a driving tooth (1), wherein the driving tooth (1) is wheel-shaped, and meshing teeth are evenly distributed around the driving tooth (1). The tooth roots of the meshing teeth are provided with rounded tooth roots (12), and the rounded tooth roots (12) are protrusions protruding outwards.

2. The driving roller according to claim 1, characterized in that: The invention also includes a crawler (2), wherein the driving teeth (1) are meshedly connected with the crawler (2); the axial middle position of the meshing teeth is an intermediate tooth (11) protruding radially outward; and a limiting hole (23) is provided on the crawler (2) to adapt to the intermediate tooth (11).

3. The driving roller according to claim 2, characterized in that: A metal buckle (22) is provided between the limiting holes (23), the metal buckle (22) is covered on the inner surface of the crawler (2), and the metal buckle (22) and the rounded tooth root (12) are engaged with each other.

4. The driving roller according to claim 3, characterized in that: Track inner teeth (21) are provided on both sides of the metal buckle (22), and the track inner teeth (21) protrude toward the inner side of the track (2); and recesses (13) are provided on both sides of the connecting portion (16) between adjacent middle teeth (11) to adapt to the track inner teeth (21).

5. The driving roller according to claim 1 or 2, characterized in that: It also includes a driving shaft (3), which is fixed to the axis of the driving tooth (1).

6. The driving roller according to claim 5, characterized in that: Driving teeth (1) are respectively installed on both sides of the driving shaft (3), and the driving teeth (1) are respectively meshed and connected with both sides of the crawler belt (2).

7. The driving roller according to claim 5, characterized in that: An axial inner hole is provided at the center of the driving tooth (1), and an inner spline (15) is provided in the inner hole. The driving tooth (1) is clamped on the driving shaft (3) by interference fit.

8. The driving roller according to claim 7, characterized in that: The interference between the inner hole of the driving tooth (1) and the driving shaft (3) is less than or equal to 1.15 mm.

9. The driving roller according to claim 2, characterized in that: The number of meshing teeth on the driving tooth (1) is 8, and the table surfaces (14) on both axial sides of the intermediate tooth (11) are arc surfaces with the central axis of the driving tooth (1) as the center.

10. The driving roller according to claim 1, wherein: The driving teeth (1) are integrally formed.

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