TW201813565A - Rotating device for roast with shock absorption and noise cancellation functions capable of reducing vibration and noise to be below 60 decibel - Google Patents

Abstract

The present invention provides a rotating device for roast with shock absorption and noise cancellation functions. The rotating device for roast comprises a shell configured therein a motor, a transmission gear set, a damping element, and a speed reduction mechanism, wherein the driving shaft of the motor may sequentially drive the transmission gear set and the speed reduction mechanism. Furthermore, one crown gear of the transmission gear set is engaged with the driving gear on the driving shaft. The damping element is coated with lubricant and is able to come into touch with the crown gear and the driving gear. Thus, a large amount of vibration and noise generated by the crown gear and the driving gear can be fully transferred to the damping element through the lubricant, so that the vibration and noise generated by the rotating device for roast is greatly reduced to be below 60 decibel.

Description

   Rotary device for grilling with vibration damping and noise reduction functions   

The invention relates to a rotating device for grilling, in particular to a rotating device for grilling provided with a damping member, the damping member being coated with grease, and capable of being adjacent to a gear driven by a drive shaft of a motor, When the rotating device is in motion, the driving shaft of the motor drives the gear to rotate. With the high damping coefficient of the damping member and the grease itself, it can completely absorb the vibration and noise generated by the gear, which can further make the rotating device for barbecue. The generated vibration noise is greatly attenuated below 60dB.

In recent years, with the rapid economic development, people are becoming more and more affluent. As a result, people not only begin to value material enjoyment, but also pay attention to personal leisure activities. Among many leisure activities, barbecue activities are the most popular. According to the general barbecue activities are mostly held outdoors, it is very suitable for parents and children or groups to participate together, so barbecue activities have become an important activity with both leisure and social functions, and are widely valued by modern people. Generally speaking, if the ingredients (such as beef, lamb, pork, chicken, or skewers) only face the heat source on a fixed side during a barbecue, after a long time grilling, it is likely that the ingredients face one side of the heat source due to heat Excessive and charred carbonization, and the other side facing away from the heat source is half-ripe because of insufficient heat. Therefore, the user must constantly turn the ingredients to heat all parts of the ingredients evenly. However, the aforementioned grilling method will inevitably cause the user to pay attention to the maturity of the food, and it will take time to flip the food, so that the user cannot relax or chat with others, which affects the quality of leisure activities.

In order to solve the foregoing problem, the industry has added a barbecue rotating device to the original barbecue appliance, so that the barbecue appliance becomes an appliance that can rotate the ingredients uniformly. Please refer to FIG. 1. The barbecue appliance 1 includes A rotary barbecue grill 10, a barbecue stove 12, and the barbecue rotating device 14, wherein the rotary barbecue grill 10 is composed of a metal frame 101 and two rod bodies 103, and a metal frame 101 is formed in the metal frame 101. A storage space for the user to place the food to be grilled therein, and the rods 103 are respectively fixed on the corresponding sides, and the metal frame 101 can be erected above the barbecue stove 12 so that The food therein can be baked by the carbon fire in the barbecue stove 12. The barbecue rotating device 14 is fixed on the side of the barbecue stove 12. One of the rods 103 of the metal frame 101 can be inserted. It is connected to the barbecue rotating device 14 so as to be rotated by being driven by the barbecue rotating device 14. In this way, the user only needs to activate the barbecue rotating device 14 to automatically rotate the metal frame 101 to make the food therein. Every part of Roasted, without having to manually flip food, a substantial increase in user convenience on the barbecue.

Although the barbecue rotating device 14 can improve the convenience of barbecue, and is widely welcomed and used by barbecue lovers, there are some shortcomings in actual use. Please refer to FIG. 14 is convenient for users to carry and assemble. Therefore, its volume is usually small. This also results in the limited and narrow space of the barbecue rotating device 14. It is impossible to install a sufficient number of well-matched gears to achieve lifting through deceleration. The rotating torque mechanism causes a plurality of reduction gears to be driven by the motor to run, often because the deceleration range between each step of the deceleration process is too large, which causes the difference in the rotation torque between these gears to be too large, causing the wheel shaft to oscillate, unable to Smooth operation will not only cause vibration and noise. Under long-term use, the wheels of these gears are more likely to be deformed, and shaft deviations will occur, resulting in damage to each of the wheels, which will cause greater damage during rotation. According to the test results of the inventors, most of the vibration noise generated by the barbecue rotating device 14 is above 70 decibels. Here, when the body is long in the preceding volume decibel environment will not only make people anxious, and even lead to a variety of adverse symptoms.

In summary, it can be known that the structure of the traditional rotating device for barbecues will not only reduce the service life of multiple reduction gears and motors in practice, but also affect the leisure quality of users due to noise. Therefore, how can it be effective? Solving the aforesaid problems becomes an important problem to be solved urgently by the present invention.

In view of the fact that during the use of the conventional barbecue rotating device, the multiple gears inside it are easy to rotate, the problem of noise occurs. Therefore, the inventor has relied on years of practical experience, and after long experiments and improvements, finally A barbecue rotating device with vibration damping and noise reduction functions of the present invention is designed, which can solve the aforementioned problems of the conventional barbecue rotating device.

One object of the present invention is to provide a rotating device for barbecue with shock absorption and noise reduction functions, so that the rotating device for barbecue does not generate a lot of noise during operation. The rotating device for barbecue includes a casing, A positioning plate, a motor, a transmission gear set, a damping member, and a reduction mechanism, wherein the casing can be mounted to the outer edge of a barbecue stove, and an accommodation space is provided in the positioning plate. The motor, the transmission gear set, the damping member and the reduction mechanism are located in the housing, and a driving gear is fixed on a driving shaft of the motor, The driving gear can rotate with the driving shaft, and can sequentially drive the gears in the transmission gear set and the reduction mechanism, so that the reduction mechanism can drive a barbecue unit to rotate. In addition, one end of the wheel shaft of the transmission gear set is pivoted. Connected to the housing, the other end of the wheel shaft is pivotally connected to the positioning plate, and a transmission gear and a crown gear are fixedly arranged in order from the one end to the other end in the axial direction, and the crown teeth The wheel can be engaged with the driving gear. The present invention is characterized in that the damping member is made of an elastic material, and grease is applied on it, and the damping member includes a cylinder and a flange, and the cylinder The body is provided with a central hole in the axial direction, and can pass through the central hole and be sleeved on the wheel shaft of the transmission gear set adjacent to the other end, so that the damping member can be positioned between the crown gear and the positioning plate. The flange is protruded from the periphery of the cylinder along the circumference so that the driving gear can be positioned between the flange and the crown gear. Thus, since both ends of the cylinder of the damping member can pass through The grease is in contact with the wall surface of the crown gear and the positioning plate, and the flange can contact the driving gear through the grease. Therefore, when the crown gear is engaged with the driving gear, and As the driving gear rotates, a large amount of vibration and noise generated on the crown gear and the driving gear will be completely transmitted to the damping member through the grease, so that the vibration noise generated by the rotating device for grilling is greatly Decay to 60 minutes the following.

In order that the review committee can further understand and understand the purpose, technical features and effects of the present invention, the embodiments are described in detail with the drawings, as follows:

[Learning]

1‧‧‧ barbecue appliances

10‧‧‧ Rotary BBQ

101‧‧‧ metal frame

103‧‧‧ Rod

12‧‧‧Barbecue stove

14‧‧‧ Rotary device for barbecue

〔this invention〕

2‧‧‧ Rotary device for barbecue

21‧‧‧shell

21A‧‧‧Front housing

21B‧‧‧Rear case

210‧‧‧accommodating space

211‧‧‧through hole

22‧‧‧ Positioning plate

23‧‧‧ Motor

231‧‧‧Drive shaft

233‧‧‧Drive gear

24‧‧‧ Transmission Gear Set

240, 2701, 2710, 2720, 2730, 2740‧‧‧

241‧‧‧drive gear

243‧‧‧crown gear

25‧‧‧Damper

250‧‧‧ center hole

251‧‧‧cylinder

253‧‧‧ flange

27‧‧‧ Reduction mechanism

270‧‧‧output gear

2703‧‧‧Socket

271‧‧‧The first reduction gear

2711‧‧‧The first big gear

2712‧‧‧First pinion

272‧‧‧second reduction gear set

2721‧‧‧The second largest gear

2722‧‧‧Second pinion

273‧‧‧third reduction gear set

2731‧‧‧The third largest gear

2732‧‧‧ Third pinion

274‧‧‧Fourth reduction gear set

2741‧‧‧Fourth largest gear

2742‧‧‧ Fourth pinion

Fig. 1 is a schematic diagram of a conventional barbecue appliance; Fig. 2 is an exploded schematic diagram of a rotating device for barbecue of the present invention; Fig. 3 is a side view of a motor and a reduction mechanism of the present invention; and Fig. 4 is a motor of the present invention Three-dimensional view with reduction mechanism.

The present invention is a rotating device for grilling with vibration damping and noise reduction functions. In one embodiment, please refer to FIGS. 2 to 4. The rotating device 2 for grilling includes a casing 21, a positioning plate 22, a A motor 23, a transmission gear set 24, a damping member 25, grease and a reduction mechanism 27, wherein the casing 21 can be mounted to the outer edge of a barbecue stove (such as the barbecue stove 12 in FIG. 1), An accommodating space 210 is provided therein, and a through hole 211 is provided on one side of the grilling stove. The through hole 211 can communicate with the accommodating space 210. In this embodiment, the casing 21 is formed by a A front case 21A and a rear case 21B are combined, and the through hole 211 is provided on the front case 21A. When the barbecue rotating device 2 is installed on a barbecue stove, the front case 21A is positioned At a position closer to the grilling stove, the rear case 21B will be located at a position farther away from the grilling stove. However, in other embodiments of the present invention, the industry can adjust the casing according to production and design requirements. The number of components of 21 is described first.

Please refer to FIG. 2 to FIG. 4 again. In this embodiment, the front side of the front case 21A (that is, the upper left direction of FIG. 2) faces the barbecue stove, and the rear case 21B is assembled To the rear side of the front case 21A (that is, the upper right direction in FIG. 2), and the receiving space 210 is recessed on the rear side of the front case 21A; however, in other embodiments of the present invention, the The accommodating space 210 can also be recessed on the front side of the rear case 21B, or can be recessed on the front case 21A and the rear case 21B at the same time. As long as the front case 21A and the rear case 21B are assembled into one body, and The receiving space 210 may be provided therein. In addition, the positioning plate 22 and the motor 23 are both installed and fixed in the accommodating space 210, wherein the positioning plate 22 is maintained at a predetermined distance from the inner wall of the casing 21 (that is, the rear casing 21B). A motor 23 is located between the positioning plate 22 and the casing 21 (ie, the rear casing 21B). A driving gear 233 is fixed to a driving shaft 231 of the motor 23, and the driving shaft 231 can drive the driving gear. 233 turns.

Please refer to FIG. 2 to FIG. 4 again, the transmission gear set 24 is positioned in the accommodation space 210 and is located between the housing 21 (that is, the rear housing 21B) and the positioning plate 22, wherein the transmission One end of the wheel shaft 240 of the gear set 24 is pivotally connected to the housing 21 (ie, the rear case 21B), and the other end of the wheel shaft 240 of the transmission gear set 24 is pivotally connected to the positioning plate 22, and the wheel shaft 240 is provided by From one end to the other end, a transmission gear 241 and a crown gear 243 are sequentially fixed along the axial direction. The crown gear 243 can be engaged with the driving gear 233. Therefore, when the motor 23 starts, its driving shaft 231 The driving gear 233, the crown gear 243, and the transmission gear 241 can be sequentially driven to rotate. In addition, the gear ratio of the crown gear 243 to the driving gear 233 can be 4.0 to 4.5: 1 to achieve a speed reduction effect.

Please refer to FIG. 2 to FIG. 4 again. The damping member 25 is made of an elastic material (such as rubber), and its configuration includes a cylinder 251 and a flange 253. The cylinder 251 is along the axial direction. A center hole 250 is provided, and the wheel shaft 240 of the transmission gear set 24 can extend into the center hole 250 so that the damping member 25 is sleeved on the wheel shaft 240 near the other end and is positioned on the crown gear. Between the 243 and the positioning plate 22, the flange 253 is protruded from the periphery of the cylinder 251 in the circumferential direction, and the driving gear 233 is positioned between the flange 253 and the crown gear 243. In addition, the damping member 25 is coated with grease, so that both ends of the cylinder 251 can pass through the grease, contact the wall surface of the crown gear 243 and the positioning plate 22 respectively, and allow the flange 253 to pass through. The grease is in contact with the driving gear 233. When the crown gear 243 is engaged with the driving gear 233, and as the driving gear 233 rotates, the lubrication effect of the grease not only enables the driving The gear 233 and the crown gear 243 rotate smoothly, and the crown gear 243 and the driving gear 233 are turned on. A large amount of vibration and noise generated will be completely transmitted to the damping member 25 through the grease, so that the vibration and noise can be completely absorbed through the high damping coefficient of the damping member 25 and the grease itself, and further The vibration noise generated by the barbecue rotating device 2 is greatly attenuated to less than 60 decibels, which is within a volume range acceptable to the human body without causing discomfort.

Please refer to FIG. 2 to FIG. 4 again, the speed reduction mechanism 27 is positioned in the receiving space 210 and between the housing 21 and the positioning plate 22. In this embodiment, the speed reduction mechanism 27 includes a first A reduction gear set 271, a second reduction gear set 272, a third reduction gear set 273, a fourth reduction gear set 274, and an output gear 270, so that the rotational torque of the driving shaft 231 of the motor 23 can be stably Output to a barbecue unit (such as a barbecue fork or the rod body 103 in Fig. 1), and the rotational torque of the driving shaft 231 is increased to rotate the barbecue unit and the food to be barbecued smoothly without vibration And the degree of noise generation, in order to effectively avoid the phenomenon and problems of shaft deviation of various components (such as gears, axles) in the reduction mechanism 27 after long-term use, in order to effectively improve the use efficiency and life of the rotary device 2 for barbecues.

The composition and operation mode of the reduction mechanism 27 are described in detail as follows. Please refer to FIG. 2 to FIG. 4. First, one end of the wheel shaft 2710 of the first reduction gear set 271 is pivotally connected to the housing 21. The other end of the wheel shaft 2710 of the reduction gear set 271 is pivotally connected to the positioning plate 22, and the first reduction gear set 271 is sequentially provided with a first large gear 2711 and a first small gear from one end to the other in the axial direction. Gear 2712, wherein the first large gear 2711 can be engaged with the driving gear 233, so that the driving shaft 231 can sequentially drive the driving gear 233 and the first large gear 2711, and the first large gear 2711 and The gear ratio of the driving gear 233 is 4.0 ~ 4.5: 1, thereby achieving a speed reduction effect. In addition, according to the inventor's continuous experimental research and improvement and correction, it is found that when the first large gear 2711 and the first small gear 2712 When the gear ratio is 47: 10 ± 1, and the gear ratio between the first large gear 2711 and the driving gear 233 is 47: 11 ± 1, it is the best gear ratio, which means that the first The speed of the reduction gear set 271 is only 1/5 ~ 1/4 of the speed of the drive shaft 231. Limited, but will allow the drive gear 233 (the driving shaft 23 or the motor 231) of the torque increases more smoothly, and 271, smoothly transmitted to the other of the subsequent reduction gear set through the first reduction gear set.

Secondly, please refer to FIGS. 2 to 4. One end of the axle 2720 of the second reduction gear set 272 is pivotally connected to the housing 21, and the other end of the axle 2720 of the second reduction gear set 272 is pivoted to The positioning plate 22 and the second reduction gear set 272 are sequentially provided with a second large gear 2721 and a second small gear 2722 in order from the one end to the other end in the axial direction. The second large gear 2721 can communicate with The first pinion 2712 is meshed to be driven to rotate by the first pinion 2712, and the gear ratio of the second pinion 2721 to the first pinion 2712 is 5.0 ~ 5.5: 1; moreover, according to the inventor After experimental research, it is found that when the gear ratio between the second large gear 2721 and the second pinion 2722 is 53: 11 ± 1, and the gear ratio between the second large gear 2721 and the first pinion 2712 is 53: 10 ± 1, which is the best matching ratio of the number of teeth, which means that the speed reduction of the second reduction gear set 272 relative to the first reduction gear set 271 is slightly larger than that of the first reduction gear set 271 relative to the drive gear 233 (Or the drive shaft 231 of the motor 23) is reduced in speed, so that the torque of the first reduction gear set 271 is flat Increasingly, and can be smoothly transmitted to subsequent reduction gear sets through the second reduction gear set 272.

Further, as shown in FIGS. 2 to 4, one end of the wheel shaft 2730 of the third reduction gear set 273 is pivotally connected to the housing 21, and the other end of the wheel shaft 2730 of the third reduction gear set 273 is pivoted. To the positioning plate 22, and a third large gear 2731 and a third small gear 2732 are sequentially fixed along the axial direction from one end to the other end of the third reduction gear set 273, and the third large gear 2731 can communicate with the first The two small gears 2722 are meshed to be driven to rotate by the second small gear 2722, and the gear ratio of the third large gear 2731 to the second small gear 2722 is also 5.0 to 5.5: 1; in addition, according to the inventor's After experimental research, it was found that when the gear ratio between the third large gear 2731 and the third pinion 2732 is 53: 11 ± 1, and the gear ratio between the third large gear 2731 and the second pinion 2722 is 53:11 ± 1 is the best matching ratio of the number of teeth, that is, the speed reduction of the third reduction gear set 273 relative to the second reduction gear set 272 is equal to or slightly smaller than that of the second reduction gear set 272 relative to the first The speed of the reduction gear set 271 is reduced, so that the torque of the second reduction gear set 272 will be increased smoothly, and Through the third reduction gear set 273, it can be smoothly transmitted to the subsequent reduction gear sets.

Also, referring to FIGS. 2 to 4, one end of the axle 2740 of the fourth reduction gear set 274 is pivotally connected to the housing 21, and the other end of the axle 2740 of the fourth reduction gear set 274 is pivoted to The positioning plate 22 and the fourth reduction gear set 274 are sequentially provided with a fourth large gear 2741 and a fourth small gear 2742 in an axial direction from one end to the other end. The fourth large gear 2741 can communicate with the third The pinion gear 2732 is meshed to be driven to rotate by the third pinion gear 2732, and the gear ratio of the fourth pinion gear 2741 to the third pinion gear 2732 is also 5.0 to 5.5: 1; in addition, according to experiments by the inventor After research, it was found that when the gear ratio between the fourth large gear 2741 and the fourth pinion 2742 is 53: 18 ± 1, and the gear ratio between the fourth large gear 2741 and the third pinion 2732 is 53: 11 ± 1, which is the best matching ratio of the number of teeth, which means that the speed reduction of the fourth reduction gear set 274 relative to the third reduction gear set 273 is completely equal to that of the third reduction gear set 273 relative to the second reduction gear. The rotation speed of the group 272 is reduced, so that the torque of the third reduction gear group 273 can be increased more smoothly, and the The fourth through the reduction gear train 274, transmitted more smoothly to the final reduction gear set.

Finally, please refer to FIGS. 2 to 4. One end of the axle 2701 of the output gear 270 is pivoted to the housing 21, and the other end of the axle 2701 of the output gear 270 is pivoted to the positioning plate 22. A recessed slot 2703 is provided in the recess, and the insertion slot 2703 corresponds to the through hole 211, so that one end of a barbecue unit can pass through the through hole 211 from the outside of the housing, and is inserted into the insertion slot 2703. The output gear 270 can be engaged with the fourth pinion 2742, and the gear ratio between the output gear 270 and the fourth pinion 2742 is 2.0 to 2.5: 1, so that the output gear 270 can drive the drive shaft 231 to The rotational torque is stably output to the grill unit, and the rotational torque of the driving shaft 231 is increased to a level sufficient to rotate the grill unit and the food to be grilled thereon. In addition, according to the experimental research by the inventor, it was found that when the output gear The gear ratio between 270 and the fourth pinion 2742 is 39: 18 ± 1, which is the best gear ratio, which means that the speed reduction of the output gear 270 relative to the fourth reduction gear set 274 will be much smaller than that. The fourth reduction gear set 274 is opposite to the third reduction gear set 273 The rotation speed is reduced. In this way, although the torque of the output gear 270 increases only slightly, it can more smoothly and stably drive the grill unit and the food to be grilled thereon, so that the grill unit and the food to be grilled on the grill can Rotates smoothly and steadily over the grill.

Please refer to FIGS. 2 to 4 again. Although in the foregoing embodiment, the reduction mechanism 27 is provided with a first reduction gear set 271, a second reduction gear set 272, a third reduction gear set 273, and a fourth reduction gear set 274 is taken as an example, but in other embodiments of the present invention, the industry can only provide two reduction gear sets (such as the first reduction gear set 271 and the second reduction gear set 272) according to the production demand and the power of the motor 23. ), Or there are three reduction gear sets (such as: first reduction gear set 271, second reduction gear set 272, third reduction gear set 273), and according to the number of reduction gear sets, corresponding pinions can be made (Eg: the second pinion 2722 or the third pinion 2732) is engaged with the output gear 270, and the corresponding pinion (eg: the second pinion 2722 or the third pinion 2732) and the number of teeth of the output gear 270 The ratio is 2.0 ~ 2.5: 1; therefore, as long as one end of the reduction mechanism 27 can be engaged with the transmission gear 241, the other end of the reduction mechanism 27 is provided with the output gear 270, and the shaft 2701 of the output gear 270 The two ends are pivotally connected to the housing 21 and the positioning plate 22, respectively Of the speed reduction mechanism 27, the first engagement Chen.

In summary, please refer to Figures 2 to 4 again. The user only needs to activate the barbecue rotating device 2 to rotate the drive shaft 231 of the motor 23. At this time, the structure of the damping member 25 is used, and The applied grease can smoothly drive the driving gear 233 and the crown gear 243, and absorb a large amount of vibration and noise generated by the driving gear 233 and the crown gear 243. At the same time, the industry can also Space, adjust the number of gears in the speed reduction mechanism 27, and make the speed reduction mechanism 27 smoothly and stably output the rotational torque of the drive shaft 231 to the barbecue unit, thereby reducing the occurrence of vibration and noise.

According to the above, it is only the preferred embodiment of the present invention, but the scope of the rights claimed by the present invention is not limited to this. According to the technical content disclosed by those skilled in the art, Equivalent changes that can be easily considered should all belong to the protection scope of the present invention.

Claims (8)

    A rotating device for barbecue with vibration damping and noise reduction functions, comprising: a casing, which is installed on the outer edge of a barbecue stove, and has a receiving space therein, and a consistent space is arranged on one side of the barbecue stove. Perforation, the through-hole is communicated with the accommodation space; a positioning plate is installed and fixed in the accommodation space and maintains a predetermined distance from the inner wall of the housing; a motor is installed and fixed in the accommodation space A driving gear is fixed on a driving shaft of one of the motors, and the driving gear can rotate with the driving shaft; a transmission gear set, one end of which is pivotally connected to the housing, and the other end of which is pivotally connected To the positioning plate, and a transmission gear and a crown gear are fixedly arranged in sequence from one end to the other end in the axial direction, the crown gear can be engaged with the driving gear; a damping member is made of an elastic material It includes a cylinder and a flange, wherein the cylinder is provided with a central hole in the axial direction, and can pass through the central hole and be sleeved on the shaft of the transmission gear set adjacent to the other end to make the damping Pieces can be positioned Between the crown gear and the positioning plate, the flange is protruded from the periphery of the cylinder in a circumferential direction, so that the driving gear can be positioned between the flange and the crown gear; grease, is Smear on the damping member so that both ends of the cylinder can penetrate the grease, contact the wall surface of the crown gear and the positioning plate respectively, and allow the flange to penetrate the grease and the driving gear In contact, when the crown gear is engaged with the driving gear, and as the driving gear rotates, a large amount of vibration and noise generated on the crown gear and the driving gear will be completely transmitted to the grease through the grease. The damping member; and a reduction mechanism, which is positioned in the accommodation space and between the housing and the positioning plate, one end of which can be engaged with the transmission gear, and the other end of which is provided with an output gear, the output One end of the wheel shaft of the gear is pivotally connected to the housing, and the other end of the wheel shaft is pivotally connected to the positioning plate, and a socket is recessed, and the socket is corresponding to the through hole, so that a barbecue unit One end can pass through the through Hole, and inserted into the insertion slot.         The rotating device for grilling according to claim 1, wherein the reduction mechanism comprises: a first reduction gear set, one end of which is pivotally connected to the housing, and the other end of which is pivoted to the positioning A plate, and a first large gear and a first small gear are sequentially fixed in an axial direction from one end to the other end, the first large gear can be engaged with the transmission gear; and a second reduction gear set One end of the wheel shaft is pivotally connected to the housing, and the other end of the wheel shaft is pivotally connected to the positioning plate, and a second large gear and a first gear are sequentially fixed in the axial direction from one end to the other end. Two pinions, the second large gear can be engaged with the first pinion, and the second small gear can be engaged with the output gear.         The barbecue rotating device according to claim 1, further comprising: a first reduction gear set, one end of which is pivotally connected to the housing, and the other end of which is pivotally connected to the positioning plate, and A first large gear and a first small gear are sequentially fixed along the axial direction from one end to the other end. The first large gear can be engaged with the transmission gear. A second reduction gear set has one end of the axle. It is pivotally connected to the casing, and the other end of the wheel shaft is pivotally connected to the positioning plate, and a second large gear and a second small gear are sequentially fixed in the axial direction from one end to the other end. A second large gear can be engaged with the first pinion; and a third reduction gear set, one end of which is pivotally connected to the housing, and the other end of which is pivotally connected to the positioning plate, and A third large gear and a third small gear are sequentially fixed in an axial direction from one end to the other end, the third large gear can be engaged with the second small gear, and the third small gear can be engaged with The output gears are engaged.         The barbecue rotating device according to claim 1, further comprising: a first reduction gear set, one end of which is pivotally connected to the housing, and the other end of which is pivotally connected to the positioning plate, and A first large gear and a first small gear are sequentially fixed along the axial direction from one end to the other end. The first large gear can be engaged with the transmission gear. A second reduction gear set has one end of the axle. It is pivotally connected to the casing, and the other end of the wheel shaft is pivotally connected to the positioning plate, and a second large gear and a second small gear are sequentially fixed in the axial direction from one end to the other end. A second large gear can be engaged with the first small gear; a third reduction gear set, one end of which is pivotally connected to the housing, the other end of which is pivotally connected to the positioning plate, and A third large gear and a third small gear are sequentially fixed along the axial direction from one end to the other end, and the third large gear can be engaged with the second small gear; and a fourth reduction gear set, which One end of the wheel axle is pivotally connected to the housing, and the other end of the wheel axle is pivotally connected to the positioning plate, and A fourth large gear and a fourth pinion are sequentially fixed along the axial direction from one end to the other end. The fourth large gear can be engaged with the third pinion, and the fourth pinion can be connected with the output gear. Engaged.         The rotating device for grilling according to claim 2, wherein a gear ratio of the first large gear to the transmission gear is 4.0 to 4.5: 1, and a gear ratio of the second large gear to the first pinion is 5.0 to 5.5: 1, the gear ratio between the output gear and the second pinion is 2.0 ~ 2.5: 1.         The rotating device for grilling according to claim 3, wherein a gear ratio of the first large gear to the transmission gear is 4.0 to 4.5: 1, and a gear ratio of the second large gear to the first pinion is 5.0 to 5.5: 1, the gear ratio between the third large gear and the second pinion is 5.0 ~ 5.5: 1, and the gear ratio between the output gear and the third pinion is 2.0 ~ 2.5: 1.         The rotating device for grilling according to claim 4, wherein a gear ratio of the first large gear to the transmission gear is 4.0 to 4.5: 1, and a gear ratio of the second large gear to the first pinion is 5.0 to 5.5: 1, the gear ratio between the third large gear and the second pinion is 5.0 ~ 5.5: 1, the gear ratio between the fourth large gear and the third pinion is 5.0 ~ 5.5: 1, the output gear and The gear ratio of the fourth pinion is 2.0 to 2.5: 1.         The rotating device for grilling according to claim 1, 2, 3, 4, 5, 6, or 7, wherein a gear ratio of the crown gear to the driving gear is 4.0 to 4.5: 1.