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CN-224229211-U - Speed-reducing small tooth box

CN224229211UCN 224229211 UCN224229211 UCN 224229211UCN-224229211-U

Abstract

The utility model discloses a small speed reduction gearbox, which belongs to the technical field of mechanical transmission equipment, and is characterized in that a driving groove of an input shaft is connected with a transmission belt of a driven groove of a fan driving shaft, the fan is directly driven to rotate by utilizing the power of the input shaft of the gearbox, an additional motor is not needed, the energy consumption and the cost are reduced, on the other hand, the start-stop impact of the motor is buffered, the abrasion of a gear system is reduced, the rotating speed of a cooling fan is synchronous with the input shaft, the heat dissipation intensity is automatically adjusted along with the load, the load is increased, the rotating speed of the input shaft is increased, the heat dissipation of the cooling fan is enhanced, a forced convection air duct is formed, an air inlet and the fan are pressurized, and air flows penetrate through a gear set and a top heat dissipation hole to form a high-efficiency heat dissipation path.

Inventors

  • QIU YIN
  • CHEN MINGXI

Assignees

  • 厦门盈立喜工贸有限公司

Dates

Publication Date
20260512
Application Date
20250626

Claims (6)

  1. 1. A speed reduction small gearbox comprises a first gearbox cover (1) and a second gearbox cover (2) which are connected with each other, and a transmission gear set and a motor (3) which are arranged between the first gearbox cover (1) and the second gearbox cover (2), wherein the transmission gear set comprises a worm gear (4), an input gear (5), a transition gear (6), a duplex gear (7) and an output gear (8); The worm gear (4) is fixedly sleeved on a rotating shaft of the motor (3), the input gear (5) comprises a large-diameter input gear (501), a small-diameter input gear (502) and an input shaft (503) which are coaxially and fixedly connected, the transition gear (6) comprises a large-diameter transition gear (601) and a small-diameter transition gear (602) which are coaxially and fixedly connected, the duplex gear (7) comprises a large-diameter duplex gear (701) and a small-diameter duplex gear (702) which are coaxially and fixedly connected, the output gear (8) comprises a large-diameter output gear (801) and an output shaft (802) which are coaxially and fixedly connected, the worm gear (4) is meshed with the large-diameter input gear (501), the small-diameter input gear (502) is meshed with the large-diameter transition gear (601), the small-diameter transition gear (602) is meshed with the large-diameter duplex gear (701), and the small-diameter duplex gear (702) is meshed with the large-diameter output gear (801). The novel toothbrush is characterized in that an air inlet (9) is formed in the first toothbrush cover (1), an installation cylinder (10) is fixedly connected to the outer side of the air inlet (9), a cross-shaped support (11) is arranged on the inner wall of the bottom of the installation cylinder (10), a cooling fan (12) is rotatably connected to one side, facing the air inlet (9), of the cross-shaped support (11), a fan driving shaft (13) is fixedly connected to one side end face, facing the air inlet (9), of the cooling fan (12), a driving groove (14) and a driven groove (15) are respectively arranged on the input shaft (503) and the fan driving shaft (13), a transmission belt (16) which is mutually matched is arranged between the driving groove (14) and the driven groove (15), and a plurality of cooling holes (17) are formed in the tops of the first toothbrush cover (1) and the second toothbrush cover (2).
  2. 2. The speed reduction small tooth box according to claim 1, wherein a supporting bar (18) is arranged in the air inlet (9), and a supporting round hole for supporting a fan driving shaft (13) is arranged at the end part of the supporting bar (18).
  3. 3. The small gear box for speed reduction according to claim 2, wherein a bearing (19) is arranged between the supporting round hole and the fan driving shaft (13), the inner ring of the bearing (19) is sleeved on the fan driving shaft (13), and the outer ring of the bearing is fixed on the inner wall of the supporting round hole.
  4. 4. The small gear box for deceleration according to claim 1, wherein the outer side end surface of the mounting cylinder (10) is provided with a detachable dust cover (20), and the dust cover (20) is connected with the mounting cylinder (10) through bolts.
  5. 5. The small deceleration tooth box according to claim 1, wherein the radiating holes (17) are distributed in an array on the top of the first tooth box cover (1) and the second tooth box cover (2), and the hole spacing is smaller than 5mm.
  6. 6. The reduction gearbox as set forth in claim 1, wherein the drive belt (16) is a flexible drive member and the driving and driven grooves (14, 15) are of a drive groove configuration that mates with the drive belt (16).

Description

Speed-reducing small tooth box Technical Field The utility model belongs to the technical field of mechanical transmission equipment, and particularly relates to a small deceleration tooth box. Background With the development of industrial technology toward miniaturization and refinement, the demand of small mechanical equipment for reduction gearbox is increasing. However, the existing small reduction gearbox has a number of problems. In order to achieve miniaturization, the internal structure is compact, heat generated by transmission parts such as gears and the like in the operation process is difficult to dissipate, the aging of lubricating oil can be accelerated at an excessively high temperature, the lubricating effect is reduced, the abrasion of the gears is increased, and the service life and the transmission precision of a reduction gearbox are affected. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide the small speed reduction gearbox, which has the advantage of solving the problem that the traditional small speed reduction gearbox is poor in heat dissipation. In order to achieve the above purpose, the present utility model provides the following technical solutions: The small gear box comprises a first gear box cover, a second gear box cover, a transmission gear set and a motor, wherein the first gear box cover and the second gear box cover are connected with each other, the transmission gear set and the motor are arranged between the first gear box cover and the second gear box cover, and the transmission gear set comprises a worm gear, an input gear, a transition gear, a duplex gear and an output gear; The worm gear is fixedly sleeved on a rotating shaft of the motor, the input gear comprises a large-diameter input gear, a small-diameter input gear and an input shaft which are coaxially and fixedly connected, the transition gear comprises a large-diameter transition gear and a small-diameter transition gear which are coaxially and fixedly connected, the duplex gear comprises a large-diameter duplex gear and a small-diameter duplex gear which are coaxially and fixedly connected, the output gear comprises a large-diameter output gear and an output shaft which are coaxially and fixedly connected, the worm gear is meshed with the large-diameter input gear, the small-diameter input gear is meshed with the large-diameter transition gear, the small-diameter transition gear is meshed with the large-diameter duplex gear, and the small-diameter duplex gear is meshed with the large-diameter output gear; An air inlet is formed in the first gearbox cover, an installation cylinder is fixedly connected to the outer side of the air inlet, a cross-shaped support is arranged on the inner wall of the bottom of the installation cylinder, a cooling fan is rotatably connected to one side of the cross-shaped support, which faces the air inlet, a fan driving shaft is fixedly connected to one side end face of the cooling fan, which faces the air inlet, the input shaft and the fan driving shaft are respectively provided with a driving groove and a driven groove, a transmission belt which is mutually matched is arranged between the driving groove and the driven groove, and a plurality of cooling holes are formed in the tops of the first gearbox cover and the second gearbox cover. The technical scheme has the advantages that the driving groove of the input shaft is connected with the driving belt of the driven groove of the fan driving shaft, the fan is directly driven to rotate by utilizing the power of the gearbox input shaft, an additional motor is not needed, the energy consumption and the cost are reduced, on the other hand, the starting and stopping impact of the motor is buffered, the abrasion of a gear system is reduced, the rotating speed of the cooling fan is synchronous with the input shaft, the heat dissipation intensity is automatically adjusted along with the load, the rotating speed of the input shaft is increased, the rotating speed of the cooling fan is increased, the heat dissipation is enhanced, the forced convection air duct is formed, the air inlet and the fan are pressurized, and air flows penetrate through the gear set and the top heat dissipation hole to be discharged, so that a high-efficiency heat dissipation path is formed. The fan is further provided with a support bar in the air inlet, and a support round hole for supporting a fan driving shaft is arranged at the end part of the support bar. The scheme has the advantages that at least the supporting bars and the supporting round holes are arranged, the two ends of the supporting bars are fixed on the inner wall of the air inlet to form a portal frame structure, lateral pulling force of the driving belt is resisted, and shafting deflection is avoided. The fan driving shaft is further provided with a bearing between the supporting round hole and the fan driving shaft, the inner ring o