TWI592125B - Barbecue with a shock absorber and silencer function - Google Patents

Description

Rotating device for barbecue with damping and sound absorbing function

The present invention relates to a rotating device for grilling, in particular to a grilling device in which a damping member is provided, which is coated with grease and which can be driven by a drive shaft of a motor, so that the grilling device is used for the grilling When the rotating device drives the gear, the driving shaft of the motor drives the gear to rotate, and the damping coefficient and the high damping coefficient of the grease itself can completely absorb the vibration and noise generated by the gear, and the rotating device for the barbecue can be further The resulting vibration noise is greatly attenuated to below 60 decibels.

In recent years, with the rapid development of the economy, people have become more and more affluent because they have become more and more affluent. At the same time, they have begun to pay attention to personal leisure activities. Among the many leisure activities, barbecues are the most popular. According to the general barbecue activities, most of them are held outdoors, which is very suitable for parent-child or group participation. Therefore, the barbecue activity has become an important activity that has both leisure and social functions, and is widely valued by modern people. Generally speaking, in the barbecue activities, if the ingredients (such as beef, mutton, pork, chicken or skewers) only face the heat source with a fixed side, after a long time of barbecue, it is likely that the ingredients are heated to one side of the heat source. Excessive and blackened carbonization, the other side of the heat source is half-baked due to insufficient heat. Therefore, the user must constantly turn the ingredients to make the parts of the food evenly heated. However, the aforementioned barbecue method is bound to cause the user to pay attention to the familiarity of the food and to turn the food from time to time so that the user cannot relax. Or chatting with others affects the quality of leisure activities.

In order to solve the above problems, the manufacturer adds a barbecue turning device to the original barbecue appliance, so that the barbecue appliance becomes a tool capable of rotating the food evenly and barbecued. Referring to FIG. 1, the barbecue appliance 1 includes A rotary grill 10, a grilling stove 12 and the grilling device 14 are formed by a metal frame 101 and two rods 103. The metal frame 101 is formed with a metal frame 101. a storage space for the user to place the food to be grilled, and the respective sides of the rod body 103 are respectively fixed on the corresponding sides, and the metal frame 101 can be erected above the barbecue stove 12, The food therein can be baked by the carbon fire in the grilling appliance 12, and the grilling device 14 is fixed to the side of the grilling stove 12, and one of the rods 103 of the metal casing 101 can be inserted. It is connected to the grilling device 14 for rotation by the grilling device 14 so that the user only needs to activate the grilling device 14 to automatically rotate the metal frame 101 to make the food therein. Every part of the body can receive 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 the barbecue, and is widely welcomed and used by the barbecue lovers, there are some defects in the actual use, as shown in Fig. 1, due to the rotating device for the barbecue 14 is convenient for the user to carry and assemble, and therefore, the volume thereof is usually small. This also causes the space of the rotatable rotating device 14 to be limited and narrow, and it is impossible to install a sufficient number of well-matched gears to enhance the transmission through deceleration. When the mechanism of rotating torque causes a plurality of reduction gears to be driven by the motor, the deceleration range between each deceleration process is often too large, and the difference in rotational torque between the gears is too large, causing the axle to oscillate, and cannot Smooth running, not only vibration and noise will occur. Under long-term use, the axles of these gears are more likely to be deformed, and shaft misalignment occurs, resulting in damage to each axle. When the rotation is generated, more noise is generated. According to the test result of the inventor, the vibration noise generated by the grilling device 14 is mostly above 70 decibels. Therefore, when the human body is in the environment of the volume decibel for a long time, not only It is anxious and can cause various adverse symptoms.

In summary, the structure of the conventional barbecue rotating device not only causes the service life of a plurality of reduction gears and motors to be reduced, but also affects the user's leisure quality due to noise, so how effective is it. Solving the aforementioned problems is an important problem that the present invention is intended to solve here.

In view of the fact that the conventional rotating device for grilling is easy to rotate when a plurality of gears therein are used, the inventor has, after many years of practical experience, after a long period of experimentation and improvement, finally The rotatable rotating device with damping and muffling function of the present invention is designed to solve the aforementioned problems of the conventional rotating device for barbecue.

An object of the present invention is to provide a rotatable rotating device with a damping and muffling function, so that the rotatable rotating device does not generate a large amount of noise during operation, and the rotatable rotating device includes a casing. a positioning plate, a motor, a transmission gear set, a damping member and a speed reduction mechanism, wherein the housing can be mounted to an outer edge of a barbecue oven, and an accommodation space is disposed therein, the positioning plate is fixedly mounted on the The motor, the transmission gear set, the damper member and the speed reduction mechanism are all located in the housing, and a driving gear is fixed on one of the driving shafts of the motor, and the driving gear is fixed to the inner wall of the housing. The driving gear can rotate with the driving shaft, and can sequentially drive the gears of the transmission gear set and the speed reduction mechanism to rotate, so that the speed reduction mechanism can drive a rotation of the barbecue unit, and the end of the axle of the transmission gear set is pivoted Connected to the housing, the other end of the axle is pivotally connected to the positioning plate, and the one end is axially from one end to the other end A transmission gear and a crown gear are sequentially arranged, and the crown gear can be engaged with the driving gear. The invention is characterized in that the damping member is made of an elastic material and is coated with grease, and The damper member includes a cylindrical body and a flange. The cylindrical body defines a central hole in the axial direction, and can pass through the central hole and is sleeved on the axle of the transmission gear set adjacent to the other end to make the damping a member can be positioned between the crown gear and the positioning plate, the flange being circumferentially convexly disposed at a periphery of the cylinder such that the drive gear can be positioned between the flange and the crown gear, In this way, since both ends of the cylinder of the damper member can transmit the grease, the crown gear is in contact with the wall surface of the positioning plate, and the flange can penetrate the grease to contact the driving gear. When the crown gear is engaged with the drive gear, and as the drive gear rotates, a large amount of vibration and noise generated on the crown gear and the drive gear will be transmitted through the grease to the damping Pieces, making the barbecue The vibration noise generated by actuating device 60 dB greatly attenuated.

For your convenience, the review committee can make a further understanding and understanding of the purpose, technical features and effects of the present invention. The embodiments are combined with the drawings, and the details are as follows:

[study]

1‧‧‧Barbeque utensils

10‧‧‧Rotary Grill

101‧‧‧Metal frame

103‧‧‧ rod body

12‧‧‧ BBQ stove

14‧‧‧Rolling device for barbecue

〔this invention〕

2‧‧‧Rolling device for barbecue

21‧‧‧ housing

21A‧‧‧ front housing

21B‧‧‧ Rear housing

210‧‧‧ accommodation space

211‧‧‧through holes

22‧‧‧ Positioning board

23‧‧‧Motor

231‧‧‧ drive shaft

233‧‧‧ drive gear

24‧‧‧Transmission gear set

240, 2701, 2710, 2720, 2730, 2740‧‧‧ axles

241‧‧‧Transmission gear

243‧‧‧ crown gear

25‧‧‧damper parts

250‧‧‧ center hole

251‧‧‧Cylinder

253‧‧‧Flange

27‧‧‧Deceleration mechanism

270‧‧‧ Output gear

2703‧‧‧ Socket slot

271‧‧‧First reduction gear set

2711‧‧‧The first big gear

2712‧‧‧First pinion

272‧‧‧Second reduction gear set

2721‧‧‧The second largest gear

2722‧‧‧Second pinion

273‧‧‧3rd reduction gear set

2731‧‧‧The third largest gear

2732‧‧‧third pinion

274‧‧‧Fourth reduction gear set

2741‧‧‧the fourth largest gear

2742‧‧‧4th pinion

1 is a schematic view of a conventional barbecue appliance; FIG. 2 is a schematic view showing the explosion of the rotary device for barbecue of the present invention; FIG. 3 is a side view of the motor and the reduction mechanism of the present invention; and FIG. 4 is a motor of the present invention; A perspective view of the speed reduction mechanism.

The invention relates to a barbecue rotating device with shock absorption and sound absorbing function, In the embodiment, as shown in FIGS. 2~4, the barbecue rotating device 2 includes a casing 21, a positioning plate 22, a motor 23, a transmission gear set 24, a damping member 25, grease and a a speed reducing mechanism 27, wherein the housing 21 can be mounted to an outer edge of a barbecue oven (such as the barbecue stove 12 of FIG. 1), and has a receiving space 210 on one side of the grilling stove The through hole 211 is connected to the accommodating space 210. In this embodiment, the housing 21 is composed of a front case 21A and a rear case 21B, and the through hole is formed. 211 is provided on the front casing 21A. When the barbecue rotating device 2 is attached to the grilling stove, the front casing 21A is positioned closer to the grilling stove, and the rear casing 21B is positioned. Farther away from the location of the grill, however, in other embodiments of the invention, the manufacturer can adjust the number of components of the housing 21 in accordance with production and design requirements, as described in the foregoing.

Referring to FIGS. 2 to 4, in this embodiment, the front side of the front case 21A (ie, the upper left direction of FIG. 2) faces the grilling stove, and the rear case 21B is assembled. To the rear side of the front case 21A (ie, the upper right direction of FIG. 2), and the accommodating space 210 is recessed on the rear side of the front case 21A, however, in other embodiments of the present invention, The accommodating space 210 may also be recessed on the front side of the rear case 21B or at the same time recessed on the front case 21A and the rear case 21B as long as the front case 21A and the rear case 21B are integrally assembled, and The accommodation space 210 may be provided therein. In addition, the positioning plate 22 and the motor 23 are both mounted and fixed in the accommodating space 210, wherein the positioning plate 22 is kept at a predetermined interval from the inner wall of the housing 21 (ie, the rear housing 21B). The motor 23 is located between the positioning plate 22 and the housing 21 (ie, the rear housing 21B). A driving gear 233 is fixed to one of the driving shafts 231 of the motor 23, and the driving shaft 231 can drive the driving gear. 233 turns.

Referring to FIGS. 2~4, the transmission gear set 24 is positioned in the accommodating space 210 and located between the housing 21 (ie, the rear housing 21B) and the positioning plate 22, wherein the transmission One end of the axle 240 of the gear set 24 is pivotally connected to the housing 21 (ie, the rear housing 21B), and the other end of the axle 240 of the transmission gear set 24 is pivotally connected to the positioning plate 22, and the axle 240 is A transmission gear 241 and a crown gear 243 are sequentially fixed from one end to the other end in the axial direction. Further, the crown gear 243 can be engaged with the drive gear 233. Therefore, when the motor 23 is started, the drive shaft 231 is driven. The driving gear 233, the crown gear 243 and the transmission gear 241 can be rotated in sequence; in addition, the gear ratio of the crown gear 243 and the driving gear 233 can be 4.0 to 4.5:1 to achieve the speed reduction effect.

Referring to Figures 2 to 4, the damper 25 is made of an elastic material (e.g., rubber), and the configuration includes a cylinder 251 and a flange 253, wherein the cylinder 251 is axially A central hole 250 is defined, and the axle 240 of the transmission gear set 24 can extend into the central hole 250 such that the damping member 25 is sleeved on the axle 240 at a position adjacent to the other end and is positioned on the crown gear. Between the 243 and the positioning plate 22, the flange 253 is circumferentially protruded from the periphery of the cylindrical body 251, and the driving gear 233 is positioned between the flange 253 and the crown gear 243. In addition, the damper 25 is coated with grease so that both ends of the cylinder 251 can pass through the grease, and the crown gear 243 is in contact with the wall surface of the positioning plate 22, respectively, and the flange 253 can be permeable. The grease is in contact with the drive gear 233. When the crown gear 243 is engaged with the drive gear 233, and the rotation of the drive gear 233, the lubrication effect of the grease can not only enable the drive. The gear 233 and the crown gear 243 smoothly rotate, and the crown gear 243 and the drive gear 233 are placed thereon. A large amount of vibration and noise will be transmitted to the damper 25 through the grease, so that the vibration and noise can be completely absorbed by the damper 25 and the high damping coefficient of the grease itself. The vibration noise generated by the grilling rotary device 2 is greatly attenuated to 60 decibels or less, that is, within a volume range acceptable to the human body without causing discomfort.

Referring to Figures 2 to 4, the speed reduction mechanism 27 is positioned in the receiving space. In the embodiment, the speed reduction mechanism 27 includes a first reduction gear set 271, a second reduction gear set 272, and a third reduction gear set 273. a fourth reduction gear set 274 and an output gear 270 for stably outputting the rotational torque of the drive shaft 231 of the motor 23 to a grilling unit (eg, a barbecue fork, or the rod 103 of FIG. 1) And the rotational torque of the drive shaft 231 is raised enough to smoothly rotate the barbecue unit and the food to be grilled thereon without causing vibration and noise generation to effectively avoid various components of the speed reduction mechanism 27 (eg, gears, The axle and the problem of the shaft deviation occur after long-term use, so as to effectively improve the performance and life of the grilling rotary device 2.

The composition and operation of the speed reduction mechanism 27 are described in detail below. Referring to FIGS. 2 to 4, first, one end of the axle 2710 of the first reduction gear set 271 is pivotally connected to the housing 21, the first The other end of the axle 2710 of the reduction gear set 271 is pivotally connected to the positioning plate 22, and the first reduction gear set 271 is sequentially fixed with a first large gear 2711 and a first small from the one end to the other end. a 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 to 4.5:1, thereby achieving the speed reduction effect; furthermore, according to the inventor's long-term experimental research and improvement, it is found that the first large gear 2711 and the first small gear 2712 The gear ratio is 47:10±1, and the gear ratio of the first large gear 2711 to the drive gear 233 is 47:11±1, which is the optimum gear matching ratio, that is, the first The rotation speed of the reduction gear set 271 is only 1/5~1/4 of the rotation speed of the drive shaft 231, although it is lowered 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.

Next, as shown in FIGS. 2~4, 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 pivotally connected to The positioning plate 22, and the second reduction gear set 272 is sequentially fixed with a second large gear 2721 and a second small tooth transmission 2722 from one end to the other end, wherein the second large gear 2721 can The first pinion gear 2712 is engaged to be rotated by the first pinion gear 2712, and the gear ratio of the second large gear 2721 and the first pinion gear 2712 is 5.0 to 5.5:1; further, according to the inventor After the experimental study, the gear ratio of the second large gear 2721 and the second small gear 2722 is 53:11±1, and the gear ratio of the second large gear 2721 and the first pinion 2712 is 53: 10±1 is the optimal gear matching ratio, that is, the rotation speed of the second reduction gear set 272 relative to the first reduction gear set 271 is slightly larger than the first reduction gear set 271 relative to the drive gear 233. The rotational speed of the drive shaft 231 of the motor 23 is reduced, so that the torque of the first reduction gear set 271 is flattened. Increasingly, and through the second reduction gear set 272, it is smoothly transmitted to the subsequent other reduction gear sets.

In addition, as shown in FIGS. 2~4, one end of the axle 2730 of the third reduction gear set 273 is pivotally connected to the housing 21, and the other end of the axle 2730 of the third reduction gear set 273 is pivotally connected. To the positioning plate 22, the third reduction gear set 273 is sequentially fixed with a third large gear 2731 and a third small gear 2732 from one end to the other end. The third large gear 2731 can The second pinion 2722 is engaged to be rotated by the second pinion 2722, and the gear ratio of the third large gear 2731 and the second pinion 2722 is also 5.0~5.5:1; further, according to the inventor After the experimental study, it is found that the gear ratio of the third large gear 2731 and the third small gear 2732 is 53:11±1, and the gear ratio of the third large gear 2731 and the second small gear 2722 is 53:11. ±1, which is the optimum gear ratio, that is, the third reduction gear set 273 is opposite to the second reduction gear set The speed reduction of 272 is equal to or slightly smaller than the rotation speed of the second reduction gear set 272 relative to the first reduction gear set 271, so that the torque of the second reduction gear set 272 is smoothly increased and transmitted. The third reduction gear set 273 is smoothly transferred to the subsequent other reduction gear sets.

In addition, as shown in FIGS. 2~4, 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 pivotally connected to The positioning plate 22, and the fourth reduction gear set 274 is sequentially fixed with a fourth large gear 2741 and a fourth small gear 2742 from one end to the other end. The fourth large gear 2741 can be the third The pinion gear 2732 is engaged to be rotated by the third pinion gear 2732, and the gear ratio of the fourth large gear 2741 and the third pinion gear 2732 is also 5.0 to 5.5:1; further, according to the experiment of the inventor After the study, it is found that the gear ratio of the fourth large gear 2741 and the fourth small gear 2742 is 53:18±1, and the gear ratio of the fourth large gear 2741 and the third small gear 2732 is 53:11± 1, the optimum gear matching ratio, that is, the rotation speed reduction of the fourth reduction gear set 274 relative to the third reduction gear set 273 is completely equivalent to 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 set 273 will be more smoothly increased, and The fourth through the reduction gear train 274, transmitted more smoothly to the final reduction gear set.

Finally, as shown in FIGS. 2~4, one end of the axle 2701 of the output gear 270 is pivotally connected to the housing 21, and the other end of the axle 2701 of the output gear 270 is pivotally connected to the positioning plate 22, and A recessed slot 2703 is defined in the recess, and the latching slot 2703 corresponds to the through hole 211, so that one end of a grilling unit can be inserted through the through hole 211 from the outer casing, and is inserted into the plugging slot 2703. The output gear 270 can be engaged with the fourth pinion 2742. The gear ratio of the output gear 270 to the fourth pinion 2742 is 2.0~2.5:1, so that the output gear 270 can drive the drive shaft 231. The rotational torque is stably outputted to the grilling unit, and the rotational torque of the drive shaft 231 is raised Raising to a degree sufficient to rotate the grilling unit and the food to be grilled; further, according to an experimental study by the inventors, when the ratio of the gear of the output gear 270 to the fourth pinion 2742 is 39:18±1, The optimum gear matching ratio, that is, the rotation speed reduction of the output gear 270 relative to the fourth reduction gear set 274 is much smaller than the rotation speed reduction of the fourth reduction gear set 274 relative to the third reduction gear set 273. In this way, although the torque of the output gear 270 is only increased by a small amount, the barbecue unit and the food to be grilled can be smoothly and stably moved, so that the barbecue unit and the food to be grilled thereon can be smoothly and stably. Rotate above the grill.

Referring to FIGS. 2 to 4, in the foregoing embodiment, the speed reduction mechanism 27 is provided with the first reduction gear set 271, the second reduction gear set 272, the third reduction gear set 273, and the fourth reduction gear set. 274 is taken as an example, but in other embodiments of the present invention, the operator can provide only two sets of reduction gear sets (eg, 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 three sets of 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, the corresponding pinion 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 speed reduction mechanism 27 can be engaged with the transmission gear 241, the other end of the speed reduction mechanism 27 is provided with the output gear 270, and the axle of the output gear 270 is 2701 The two ends are respectively pivotally connected to the housing 21 and the positioning plate 22, that is, the hair is Of the speed reduction mechanism 27, the first engagement Chen.

In summary, as shown in FIGS. 2 to 4, the user only needs to activate the grilling device 2 for rotating the driving shaft 231 of the motor 23, and at this time, by the structure of the damping member 25, The applied grease can smoothly rotate the drive gear 233 and the crown gear 243, and Absorbing a large amount of vibration and noise generated by the drive gear 233 and the crown gear 243, and at the same time, the operator can adjust the number of gears in the speed reduction mechanism 27 according to the space of the rotary rotating device 2, and the speed reduction mechanism 27 can drive the drive shaft 231 The rotating torque is smoothly and stably outputted to the grilling unit, thereby reducing the occurrence of vibration and noise.

The above is only the preferred embodiment of the present invention, but the scope of the claims of the present invention is not limited thereto, and according to those skilled in the art, according to the technical content disclosed in the present invention, Equivalent changes that are easily considered are within the scope of protection of the invention.

22‧‧‧ Positioning board

23‧‧‧Motor

231‧‧‧ drive shaft

233‧‧‧ drive gear

24‧‧‧Transmission gear set

240‧‧‧ axle

241‧‧‧Transmission gear

243‧‧‧ crown gear

25‧‧‧damper parts

251‧‧‧Cylinder

253‧‧‧Flange

27‧‧‧Deceleration mechanism

270‧‧‧ Output gear

Claims (8)

A rotatable rotating device with a shock absorbing and muffling function, comprising: a casing mounted to an outer edge of a barbecue stove, wherein a receiving space is provided therein, and the upper side is consistently facing one side of the grilling stove a through hole, the through hole is in communication with the receiving space; a positioning plate is fixedly mounted in the receiving space and is spaced apart from the inner wall of the housing by a predetermined distance; a motor is fixedly mounted in the receiving space a driving gear is fixed on one of the driving shafts of the motor, and the driving gear can rotate with the driving shaft; a transmission gear set has one end of the axle pivotally connected to the casing, and the other end of the axle is pivotally connected To the positioning plate, and a transmission gear and a crown gear are sequentially fixed 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 The utility model comprises a cylinder and a flange, wherein the cylinder has a central hole in the axial direction, and can pass through the central hole and is sleeved on the axle 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 circumferentially protruded around the circumference of the cylinder so that the driving gear can be positioned between the flange and the crown gear; the grease is Applying on the damper member such that the two ends of the cylinder can pass through the grease, respectively contacting the crown gear with the wall surface of the positioning plate, and allowing the flange to penetrate the grease, and the driving gear When the crown gear is engaged with the drive gear, and as the drive gear rotates, a large amount of vibration and noise generated on the crown gear and the drive gear will be transmitted through the grease to the grease. The damper member and a speed reduction mechanism are positioned in the accommodating space, and are located 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 gear axle is pivotally connected to the housing, and the other end of the axle is pivotally connected to the positioning plate, and The recess is provided with a insertion slot corresponding to the through hole, so that one end of a grilling unit can pass through the through hole through the outer casing and be inserted into the insertion slot. The rotary rotating device of claim 1, wherein the speed reducing mechanism comprises: a first reduction gear set, one end of the axle is pivotally connected to the housing, and the other end of the axle is pivotally connected to the positioning a first large gear and a first small gear are sequentially fixed 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 axle is pivotally connected to the casing, and the other end of the axle is pivotally connected to the positioning plate, and a second large gear and a first portion are sequentially fixed from one end to the other end in the axial direction. A second pinion gear is engageable with the first pinion gear, and the second pinion gear is engageable with the output gear. The rotatable rotating device of claim 1, further comprising: a first reduction gear set, one end of the axle is pivotally connected to the housing, and the other end of the axle is pivotally connected to the positioning plate, and A first large gear and a first small gear are sequentially fixed from one end to the other end, and the first large gear can be engaged with the transmission gear; and a second reduction gear set has one end of the axle The other end of the axle is pivotally connected to the positioning plate, and a second large gear and a second small gear are sequentially fixed from one end to the other end in the axial direction. a second large gear can be engaged with the first pinion gear; and a third reduction gear set, one end of the axle is pivotally connected to the casing, and the other end of the axle is pivotally connected to the positioning plate, and A third large gear and a third small gear are sequentially fixed from one end to the other end in the axial direction, and the third large gear can be engaged with the second small gear, and the third small gear can The output gears are engaged. The rotatable rotating device of claim 1, further comprising: a first reduction gear set, one end of the axle is pivotally connected to the housing, and the other end of the axle is pivotally connected to the positioning plate, and The first one is fixed in order from the one end to the other end in the axial direction. a gear and a first pinion gear, the first large gear gear can be engaged with the transmission gear; a second reduction gear set, one end of the axle is pivotally connected to the casing, and the other end of the axle is pivotally connected To the positioning plate, and a second large gear and a second small gear are sequentially fixed from one end to the other end in the axial direction, and the second large gear can be engaged with the first small gear; The three-reduction gear set has one end of the axle pivoted to the casing, and the other end of the axle is pivotally connected to the positioning plate, and a third largest is fixed in the axial direction from one end to the other end. a gear and a third pinion gear, the third large gear can be engaged with the second pinion gear; and a fourth reduction gear set, one end of the axle is pivotally connected to the casing, and the other end of the axle is Is pivotally connected to the positioning plate, and a fourth large gear and a fourth small gear are sequentially fixed from one end to the other end in the axial direction, and the fourth large gear can be engaged with the third small gear The fourth pinion gear can be engaged with the output gear. The rotary device for a barbecue according to claim 2, wherein a ratio of a tooth 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 small gear is 5.0 5.5:1, the gear ratio of the output gear to the second pinion gear is 2.0~2.5:1. The rotatable rotating device according to claim 3, wherein a ratio of a tooth 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 small gear is 5.0~ 5.5:1, the gear ratio of the third large gear to the second pinion gear is 5.0~5.5:1, and the gear ratio of the output gear to the third pinion gear is 2.0~2.5:1. The rotatable rotating device according to claim 4, wherein a ratio of a tooth 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~ 5.5:1, the gear ratio of the third large gear and the second pinion gear is 5.0~5.5:1, and the gear ratio of the fourth large gear to the third pinion gear is 5.0~5.5:1, and the output gear is The fourth pinion has a gear ratio of 2.0 to 2.5:1. A rotatable rotating device according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the crown The gear ratio of the gear to the drive gear is 4.0~4.5:1.