SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a mahjong shuffling large disk variable speed driving device of a mahjong machine.
The purpose of the utility model is realized through the following technical scheme: a variable speed driving device for a shuffling large disk of a mahjong machine is characterized in that the bottom of the shuffling large disk is provided with the variable speed driving device, the variable speed driving device comprises a motor, an output shaft of the motor is fixedly connected with an input pawl gear, a first output pawl gear is movably sleeved on the output shaft of the motor, the variable speed driving device also comprises a gear shaft, an acceleration pawl gear is movably sleeved on the gear shaft, the acceleration pawl gear is meshed with the input pawl gear, a second output pawl gear is movably sleeved on the gear shaft, and the first output pawl gear and the second output pawl gear are both meshed with an inner gear ring arranged at the bottom of the shuffling large disk;
the ratchet-type transmission is characterized in that pawls are arranged on the end faces of the tops of the input pawl gear and the speed-increasing pawl gear in a circumferential array mode, ratchets are arranged on the end faces of the bottoms of the first output pawl gear and the second output pawl gear, pawls arranged on the tops of the input pawl gear are matched with ratchets arranged at the bottom of the first output pawl gear, and pawls arranged on the tops of the speed-increasing pawl gear are matched with ratchets arranged at the bottom of the second output pawl gear.
Specifically, the motor is fixed on the motor support, the motor support is provided with a gear shaft seat, and the gear shaft is arranged on the gear shaft seat and is in running fit with the gear shaft seat.
Specifically, the upper end of the output shaft of the motor is sleeved with a first limiting spring, the first limiting spring is limited on the output shaft of the motor through a first limiting bolt, and the bottom of the first limiting spring is in contact with the upper end face of the first output pawl gear.
Specifically, the upper end of the gear shaft is sleeved with a second limiting spring, the second limiting spring is limited on the gear shaft through a second limiting bolt, and the bottom of the second limiting spring is in contact with the upper end face of the second output pawl gear.
Specifically, the diameter of the input pawl gear is larger than the diameter of the speed increasing pawl gear.
The utility model has the advantages of it is following:
the utility model discloses a change of input speed and the change that turns to are realized to one-to-one big one little input pawl gear and acceleration rate pawl gear meshing, the subdividing forms the pawl interlock with two output gear respectively, realize the output that the variable speed is not turned, and the motor only need just to change just can realize the conversion of high speed and low-speed, moreover, the steam generator is simple in structure, the control is convenient, through driving the big dish low-speed rotation of shuffling at shuffling initial stage variable speed drive arrangement, reduced the collision noise of mahjong tiles because of high-speed production under the condition that does not influence shuffling efficiency, increase the rotational speed of shuffling the big dish when shuffling later stage mahjong tiles, let mahjong tiles grab the tablet through snatching conveying mechanism with high frequency, so even if speed increases and also can not produce too big noise because of mahjong tiles quantity is few this moment, the efficiency of shuffling has also been improved simultaneously.
Drawings
FIG. 1 is a schematic view of the mounting structure of a shuffling platter;
FIG. 2 is a schematic view of the structure of the variable speed drive device of the present invention cooperating with a shuffling large plate;
FIG. 3 is an exploded view of the variable speed drive of the present invention;
fig. 4 is a schematic front view of the variable speed drive of the present invention;
FIG. 5 is a detail view of the variable speed drive device of the present invention in cooperation with a shuffling platter;
FIG. 6 is a schematic view of the structure of the ratchet pawl and the ratchet teeth of the present invention;
in the figure: 1-central shaft seat, 2-shuffling large disc, 3-large iron plate, 4-variable speed driving device, 401-motor, 402-motor support, 403-input pawl gear, 404-first output pawl gear, 405-first limit bolt, 406-gear shaft seat, 407-gear shaft, 408-speed-increasing pawl gear, 409-second output pawl gear, 410-second limit spring, 411-second limit bolt, 412-first limit spring, 413-pawl and 414-ratchet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1 to 6, a variable speed driving device for a shuffling large disk of a mahjong machine is provided at the bottom of the shuffling large disk 2, the variable speed driving device comprises a motor 401, an output shaft of the motor 401 is fixedly connected with an input pawl gear 403, an output shaft of the motor 401 is movably sleeved with a first output pawl gear 404, the variable speed driving device further comprises a gear shaft 407, a speed increasing pawl gear 408 is movably sleeved on the gear shaft 407, the speed increasing pawl gear 408 is meshed with the input pawl gear 403, a second output pawl gear 409 is movably sleeved on the gear shaft 407, and the first output pawl gear 404 and the second output pawl gear 409 are both meshed with an inner gear ring provided at the bottom of the shuffling large disk 2; when the output shaft of the motor 401 rotates forwards, the input pawl gear 403 can drive the first output pawl gear 404 to rotate forwards together, otherwise, the first output pawl gear 404 slips, when the gear shaft 407 rotates forwards, the speed-up pawl gear 408 can drive the second output pawl gear 409 to rotate forwards along with the first output pawl gear 409, and otherwise, the second output pawl gear 409 slips;
pawls 413 are arranged on the end faces of the tops of the input pawl gear 403 and the speed increasing pawl gear 408 in a circumferential array mode, ratchet teeth 414 are arranged on the end faces of the bottoms of the first output pawl gear 404 and the second output pawl gear 409, the pawl 413 arranged on the top of the input pawl gear 403 is matched with the ratchet teeth 414 arranged on the bottom of the first output pawl gear 404, and the pawl 413 arranged on the top of the speed increasing pawl gear 408 is matched with the ratchet teeth 414 arranged on the bottom of the second output pawl gear 409. When the mahjong machine works, at the initial shuffling stage, a large number of mahjong tiles are crowded on the large plate, and the four-side grabbing and conveying mechanism of the mahjong machine is not easy to grab empty, so that the rotating speed of the large plate can be reduced through the variable-speed driving device, and the collision noise of the mahjong tiles caused by high speed is reduced under the condition of not influencing the shuffling efficiency; in the middle and later shuffling stages, along with the shuffling, the mahjong tiles are gradually reduced, the mahjong tiles can not be easily grabbed by the grabbing and conveying mechanism, the rotating speed of the plate is increased at the moment, the mahjong tiles are grabbed by the grabbing and conveying mechanism at high frequency, and the shuffling efficiency is improved; at the initial stage of shuffling of the mahjong machine, when a large number of mahjong tiles are arranged on the shuffling large plate 2, the motor 401 rotates forwards to enable the output shaft of the motor 401 to drive the input pawl gear 403 to rotate forwards, the first output pawl gear 404 and the input pawl gear 403 are meshed with the ratchet teeth 414 through the pawl 413, so that the first output pawl gear 404 is driven to rotate forwards and then rotates forwards when the input pawl gear 403 rotates forwards, the first output pawl gear 404 is sleeved on the output shaft of the motor 401, the first output pawl gear 404 can rotate relative to the output shaft of the motor 401 and axially move along the output shaft of the motor 401, when the input pawl gear 403 drives the first output pawl gear 404 to rotate forwards and then transmits power to the shuffling large plate 2 through the first output pawl gear 404 and enables the shuffling large plate 3 to rotate at a low speed, and therefore the purpose of reducing collision noise of the mahjong tiles is achieved; meanwhile, when the output shaft of the motor 401 rotates forward, the speed-increasing pawl gear 408 meshed with the input pawl gear 403 rotates reversely, and because the speed-increasing pawl gear 408 and the second output pawl gear 409 are meshed with the ratchet teeth 414 through the pawls 413, the speed-increasing pawl gear 408 slips with the second output pawl gear 409 when rotating reversely, and the second output pawl gear 409 passively follows the shuffle large disc 2 to rotate, so that the power output of the speed change driving device 4 is not influenced; when the mahjong tiles on the big shuffling disk 2 are gradually reduced in the middle and later shuffling stages, the output shaft of the motor 401 rotates reversely, the output shaft drives the input pawl gear 403 to rotate reversely, at the moment, the input pawl gear 403 and the first output pawl gear 404 slip without enabling the first output pawl gear 404 to output power to the big shuffling disk 2, the input pawl gear 403 drives the speed increasing pawl gear 408 meshed with the input pawl gear 403 to rotate forwardly, at the moment, the speed increasing pawl gear 408 and the second output pawl gear 409 are meshed with the ratchet teeth 414 through the pawl 413, the power is finally transmitted to the big shuffling disk 2 through the second output pawl gear 409, as the diameter of the input pawl gear 403 is larger than that of the speed increasing pawl gear 408, the big shuffling disk 2 rotates at a high speed, thereby achieving the purpose of improving the shuffling efficiency, so that the motor 401 rotates forwardly to drive the big shuffling disk 2 to rotate at a low speed, the reverse rotation drives the shuffle big disk 2 to rotate at high speed, the adjustment is convenient, and the control is simple.
Further, the motor 401 is fixed on the motor bracket 402, the motor bracket 402 is provided with a gear shaft seat 406, and the gear shaft 407 is fixedly arranged on the gear shaft seat 406.
Further, a first limiting spring 412 is sleeved at the upper end of an output shaft of the motor 401, the first limiting spring 412 is limited on the output shaft of the motor 401 through a first limiting bolt 405, the bottom of the first limiting spring 412 is in contact with the upper end face of the first output pawl gear 404, a second limiting spring 410 is sleeved at the upper end of the gear shaft 407, the second limiting spring 410 is limited on the gear shaft 407 through a second limiting bolt 411, and the bottom of the second limiting spring 410 is in contact with the upper end face of the second output pawl gear 409. When the output shaft of the motor 401 and the gear shaft 407 are reversely rotated, the first output pawl gear 404 and the second output pawl gear 409 both slip, and the pawls 413 and the ratchet teeth 414 are in a separated state when slipping, and at this time, the distance between the first output pawl gear 404 and the input pawl gear 403 and the distance between the speed increasing pawl gear 408 and the second output pawl gear 409 are both increased to achieve separation and non-engagement, and engagement is required in the forward rotation, in which an axial force is required to be applied to the second output pawl gear 409 and the first output pawl gear 404, the present solution provides the axial force by providing the first limit spring 412 on the output shaft of the motor 401 and the second limit spring 410 on the gear shaft 407, when the input pawl gear 403 rotates reversely, the first output pawl gear 404 moves axially along the output shaft of the motor 401 to compress the first limit spring 412, and keeps meshing when rotating forward; when the speed increasing pawl gear 408 rotates in the reverse direction, the second output pawl gear 409 moves in the axial direction along the gear shaft 407 to compress the second limit spring 410, and remains engaged in the forward rotation.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.