Automatic gearbox

Abstract

The automatic gearbox comprises a base, a motor and a husking device, the husking device comprises a shell, a first power set and a second power set, the first power set comprises a first power roller, a first large gear and a first small gear, the two ends of the first power roller are located on the outer side of the shell respectively, the motor is connected with the first power roller, and the second power roller is connected with the second large gear. The first power set comprises a first power roller, a first large gear and a first small gear, the first large gear and the first small gear are both fixed to the first power roller, the second power set comprises a second power roller, a second large gear and a second small gear, one end of the second power roller is located outside the shell, the part, located in the shell, of the second power roller is sleeved with a sleeve shell, the second large gear and the second small gear are both fixed to the sleeve shell, and an automatic speed adjusting device is arranged on the shell. The automatic speed adjusting device is reasonable in structure, the first power set and the second power set can adjust the rotating speed of the first power roller and the rotating speed of the second power roller by changing the meshing condition of a large gear and a small gear in the first power set and the second power set, and therefore the abrasion degree of rubber rollers connected to the two power rollers can be adjusted.

Description

Technical Field

[0001] The utility model relates to the field of rice husker, in particular to an automatic gearbox. Background Art

[0002] Rice huller is a grain processing machine that removes the husk of rice and makes brown rice. It can remove the outer shell of rice, reduce the cracking of rice grains and the damage of the skin, and keep the brown rice intact as much as possible. It is mainly composed of a hopper feeding device, a head device, a husk separation chamber, a gear box, a frame, etc.

[0003] The rice husking rubber roller is the main accessory of the rubber roller rice husking machine and is the key equipment for rice husking. Its working principle is that the two rubber rollers rotate at opposite speeds to squeeze, tear and peel the rice between the two rollers, so as to achieve the purpose of husking the rice. In actual use, due to the speed difference between the two rubber rollers, the wear degree of the two rubber rollers is inconsistent. The rubber roller with a faster speed wears faster because of its high speed, and finally there will be large and small rollers, which not only affects the husking efficiency, but also causes waste and increases the time cost of replacing rubber rollers. In response to the above problems, a solution is proposed below. Utility Model Content

[0004] The utility model aims to provide an automatic transmission, which has the advantage of being able to change the rotation speeds of two power rollers through manual adjustment, thereby enabling the two rubber rollers to be evenly worn.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] An automatic transmission, comprising a base, a motor and a shelling device, characterized in that the motor and the shelling device are respectively fixed on both sides of the upper end surface of the base, the shelling device comprises a shell, a first power group and a second power group, the first power group comprises a power roller 1, a large gear 1 and a small gear 1, the power roller 1 is laterally inserted into the shell, and the two ends of the power roller 1 are respectively located on the outside of the shell, the output shaft of the motor is connected to one end of the power roller 1, the side of the shell close to the motor is the inner side of the shell, and the side of the shell away from the motor is the outer side of the shell, the large gear 1 and the small gear 1 are both located in the inner cavity of the shell, and the large gear 1 and the small gear 1 are both fixed on the power roller 1, the large gear 1 is located on the side of the power roller 1 close to the inner side of the shell, and the small gear 1 is located on the side of the power roller 1 close to the outer side of the shell, the second power group comprises a power roller 2, Large gear 2 and small gear 2, the power roller 2 is horizontally inserted into the shell, and one end of the power roller 2 passes through the surface side of the shell and is located outside the shell, the other end of the power roller 2 is rotatably connected to the side wall of the shell, and a sleeve is provided on the part of the power roller 2 located in the shell, and the sleeve is slidably connected to the power roller 2, the large gear 2 and the small gear 2 are both fixed on the sleeve, and an adjustment gap is left between the large gear 2 and the small gear 2, the large gear 2 is located on the side close to the surface side of the shell, and the small gear 2 is located on the side close to the inner side of the shell, an automatic speed regulating device is provided on the shell, and the automatic speed regulating device is used to adjust the position of the sleeve, the power roller 2 is provided with a first working position and a second working position, when the sleeve is located at the first working position, the small gear 2 is meshed with the large gear 1, and when the sleeve is located at the second working position, the large gear 2 is meshed with the small gear 1.

[0007] Preferably, the automatic speed regulating device comprises a cylinder, a shift fork and a dust cover, the cylinder being fixed to the outer surface of the inner side of the shell, the dust cover being fixed to the outer surface of the outer side of the shell, the output shaft of the cylinder passing through the side wall of the shell and contacting the dust cover, the dust cover being provided with an adjustment groove, the end of the cylinder output shaft being located in the adjustment groove and being slidably connected to the adjustment groove, the shift fork being fixed on the cylinder output shaft, and the shift fork being located inside the shell, one side of the shift fork being clamped in the adjustment gap, and the shift fork being used to push the large gear 2 and the small gear 2 to move.

[0008] Preferably, a small bearing is connected to the lower end of the shift fork, and the diameter of the small bearing is smaller than the distance between the large gear 2 and the small gear 2.

[0009] Preferably, the portion of the power roller 2 located in the shell is provided with a plurality of guide rails, and the sleeve shell is provided with a plurality of guide grooves, and the guide grooves are slidably connected to the guide rails.

[0010] Preferably, the parts of the power roller 1 and the power roller 2 extending toward the surface of the shell are provided with pulley keys, and the pulley keys are used to drive the rubber rollers to rotate.

[0011] Preferably, four large bearings are embedded in the shell, the power roller 1 passes through two of the large bearings and is fixedly connected to the inner edges of the two large bearings, and the power roller 2 passes through the other two large bearings and is fixedly connected to the inner edges of the two large bearings.

[0012] The beneficial effects of the utility model are as follows: when the housing is in the first working position, the small gear 2 is meshed with the large gear 1, and under the condition of the same linear speed, the angular velocity of the small gear 2 is greater than the angular velocity of the large gear 1, so that the rotation speed of the power roller 2 is higher than that of the power roller 1, and the rubber roller sleeved on the power roller 2 wears faster;

[0013] When the housing is in the second working position, the large gear 2 is meshed with the small gear 1. Under the condition of the same linear speed, the angular velocity of the large gear 2 is less than the angular velocity of the small gear 1, so that the rotation speed of the power roller 1 is higher than that of the power roller 2, and the rubber roller sleeved on the power roller 1 wears faster.

[0014] The cylinder can be used to push the shift fork to move, so that the shift fork can adjust the position of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment;

[0016] Figure 2 This is a schematic diagram of the structure of the embodiment for showing the interior of the housing;

[0017] Figure 3 This is a schematic diagram of the structure of the embodiment used to show the cooperation between the automatic speed regulating device and the second power group;

[0018] Figure 4 The embodiment is a schematic diagram of the structure of the automatic speed regulating device.

[0019] Figure numerals: 1. base; 11. large bearing; 2. motor; 3. housing; 4. first power group; 41. power roller one; 42. large gear one; 43. small gear one; 5. second power group; 51. power roller two; 52. large gear two; 53. small gear two; 54. housing; 55. guide rail; 6. automatic speed regulating device; 61. cylinder; 62. shift fork; 63. dust cover; 7. pulley key. DETAILED DESCRIPTION

[0020] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figures 1 to 4 As shown, an automatic transmission includes a base 1, a motor 2 and a shelling device, wherein the motor 2 and the shelling device are respectively fixed on both sides of the upper end surface of the base 1. The shelling device includes a housing 3, a first power group 4 and a second power group 5, wherein the housing 3 includes an upper housing 3 and a lower housing 3, wherein the lower housing 3 is fixedly connected to the base 1, and the upper housing 3 is fixed on the upper part of the lower housing 3 by fasteners such as screws, and the main structures of the first power group 4 and the second power group 5 are both located in the inner cavity of the housing 3. The side of the housing 3 close to the motor 2 is the inner side, and the side away from the motor 2 is the outer side.

[0022] Four large bearings 11 are embedded in the shell 3, two of which are fixed on the inner side wall of the shell 3, and the other two are fixed on the outer side wall of the shell 3, and the positions of the two large bearings 11 on the outer side of the shell 3 correspond to the positions of the two large bearings 11 on the inner side of the shell 3.

[0023] The first power group 4 includes a power roller 41, a large gear 42 and a small gear 43. The power roller 41 passes through one of the large bearings 11 located on the inner side and the other large bearing 11 located on the outer side in sequence, and both ends of the power roller 41 are exposed outside the housing 3. The output shaft of the motor 2 is connected to the end of the power roller 41 extending from the inner side. Couplings are provided on the output shaft of the motor 2 and the power roller 41, and the output shaft of the motor 2 is fixedly connected to the power roller 41 through the two couplings.

[0024] The large gear 42 and the small gear 43 are both located in the inner cavity of the housing 3, and are fixed on the power roller 41. When the power roller 41 rotates, it will drive the large gear 42 and the small gear 43 to rotate synchronously. The large gear 42 is located on the side close to the inner side of the housing 3, and the small gear 43 is located on the side close to the outer side of the housing 3.

[0025] The second power group 5 includes a power roller 2 51, a large gear 2 52 and a small gear 2 53. The power roller 2 51 passes through the other two large bearings 11, and the end of the power roller 2 51 close to the inner side is located inside the large bearing 11 and does not penetrate the side wall of the shell 3. The end of the power roller 2 51 close to the outer side passes through the large bearing 11 and passes through the side wall of the shell 3 and is located outside the shell 3.

[0026] The large gear 2 52 and the small gear 2 53 are double gears, that is, the large gear 2 52 and the small gear 2 53 are both fixed on the sleeve 54, the large gear 2 52 is located on the side close to the surface side of the housing 3, and the small gear 2 53 is located on the side close to the inner side of the housing 3. The size of the large gear 2 52 is larger than that of the small gear 1 43, and the size of the large gear 1 42 is larger than that of the small gear 2 53. In this design, the size of the large gear 1 42 and the large gear 2 52 is the same, and the size of the small gear 1 43 and the small gear 2 53 is the same.

[0027] A plurality of guide rails 55 are provided on the portion of the power roller 2 51 located in the shell 3 . The guide rails 55 make the surface of the power roller 2 51 uneven, and are used to act as key caps on a common gear connecting shaft. A plurality of guide grooves are provided on the inner edge surface of the sleeve 54 . The guide grooves are slidably connected to the guide rails 55 , and the power roller 2 51 can be driven to rotate by the guide rails 55 .

[0028] The power roller 2 51 is provided with a first working position and a second working position. When the casing 54 is located at the first working position, the small gear 2 53 is meshed with the large gear 1 42 . When the casing 54 is located at the second working position, the large gear 2 52 is meshed with the small gear 1 43 .

[0029] In order to adjust the position of the sleeve 54, an automatic speed regulating device 6 is also provided on the housing 3. The automatic speed regulating device 6 includes a cylinder 61, a fork 62 and a dust cover 63. The cylinder 61 is fixed to the outer surface of the inner side of the housing 3, and the dust cover 63 is fixed to the outer surface of the outer side of the housing 3. The dust cover 63 is provided with an adjustment groove, and the end of the output shaft of the cylinder 61 is located in the adjustment groove and is slidably connected to the adjustment groove. The fork 62 includes a sleeve sleeved on the output shaft of the cylinder 61, and the sleeve sleeve is fixed to the output shaft of the cylinder 61 by fasteners such as screws. The output shaft of the cylinder 61 can drive the fork 62 to move. The fork 62 also includes a shift block with an overall arc-shaped structure. The shift block is stuck in the adjustment gap. As the output shaft of the cylinder 61 is extended and retracted, the fork 62 can adjust the position of the sleeve.

[0030] The parts of the power roller 1 41 and the power roller 2 51 extending to the surface side of the shell 3 are provided with a pulley key 7. The rubber roller used for shelling is sleeved on the parts of the two power rollers extending to the shell 3. The pulley key 7 can prevent the rubber roller and the two power rollers from slipping, so that the rubber roller can shell the millet. The rubber roller is a wearing part. The rubber roller with a faster speed wears faster. If the speed is not adjusted, there will eventually be large and small rollers, which will affect shelling. Therefore, it is necessary to use speed change to force the slow roller to speed up. After multiple speed changes, a pair of rubber rollers can be completely worn out.

[0031] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic transmission, comprising a base (1), a motor (2) and a shelling device, characterized in that: The motor (2) and the shelling device are respectively fixed on both sides of the upper end surface of the base (1); the shelling device comprises a housing (3), a first power group (4) and a second power group (5); the first power group (4) comprises a power roller (41), a large gear (42) and a small gear (43); the power roller (41) is laterally inserted into the housing (3), and the two ends of the power roller (41) are respectively located outside the housing (3); the output shaft of the motor (2) is connected to one end of the power roller (41); the side of the housing (3) close to the motor (2) is the housing (3) The side of the housing (3) away from the motor (2) is the front side of the housing (3); the large gear 1 (42) and the small gear 1 (43) are both located in the inner cavity of the housing (3); the large gear 1 (42) and the small gear 1 (43) are both fixed on the power roller 1 (41); the large gear 1 (42) is located on the side of the power roller 1 (41) close to the inner side of the housing (3); the small gear 1 (43) is located on the side of the power roller 1 (41) close to the front side of the housing (3); the second power group (5) includes a power roller 2 (51), a large gear 2 (52) and a small gear 2 (53) ), the second power roller (51) is laterally inserted into the shell (3), and one end of the second power roller (51) passes through the surface of the shell (3) and is located outside the shell (3), and the other end of the second power roller (51) is rotatably connected to the side wall of the shell (3), and a sleeve (54) is sleeved on the part of the second power roller (51) located inside the shell (3), and the sleeve (54) is slidably connected to the second power roller (51), and the second large gear (52) and the second small gear (53) are both fixed on the sleeve (54), and an adjustment space is left between the second large gear (52) and the second small gear (53). The large gear 2 (52) is located on a side close to the surface of the housing (3), and the small gear 2 (53) is located on a side close to the inner side of the housing (3). The housing (3) is provided with an automatic speed regulating device (6), and the automatic speed regulating device (6) is used to adjust the position of the sleeve (54). The power roller 2 (51) is provided with a first working position and a second working position. When the sleeve (54) is located at the first working position, the small gear 2 (53) is meshed with the large gear 1 (42). When the sleeve (54) is located at the second working position, the large gear 2 (52) is meshed with the small gear 1 (43).

2. An automatic transmission according to claim 1, characterized in that: The automatic speed regulating device (6) comprises a cylinder (61), a shift fork (62) and a dust cover (63); the cylinder (61) is fixed to the outer surface of the inner side of the housing (3); the dust cover (63) is fixed to the outer surface of the outer side of the housing (3); the output shaft of the cylinder (61) passes through the side wall of the housing (3) and contacts the dust cover (63); an adjustment groove is provided on the dust cover (63); the end of the output shaft of the cylinder (61) is located in the adjustment groove and is slidably connected to the adjustment groove; the shift fork (62) is fixed to the output shaft of the cylinder (61); the shift fork (62) is located inside the housing (3); one side of the shift fork (62) is clamped in the adjustment gap; the shift fork (62) is used to push the large gear 2 (52) and the small gear 2 (53) to move.

3. An automatic transmission according to claim 2, characterized in that: The lower end of the shift fork (62) is connected to a small bearing, and the diameter of the small bearing is smaller than the distance between the large gear 2 (52) and the small gear 2 (53).

4. An automatic transmission according to claim 3, characterized in that: The portion of the second power roller (51) located inside the housing (3) is provided with a plurality of guide rails (55), and the sleeve (54) is provided with a plurality of guide grooves, which are slidably connected to the guide rails (55).

5. The automatic transmission according to claim 1, characterized in that: The parts of the power roller 1 (41) and the power roller 2 (51) extending toward the surface of the housing (3) are provided with pulley keys (7), and the pulley keys (7) are used to drive the rubber rollers to rotate.

6. An automatic transmission according to claim 1, characterized in that: Four large bearings (11) are embedded in the shell (3), the power roller 1 (41) passes through two of the large bearings (11) and is fixedly connected to the inner edges of the two large bearings (11), and the power roller 2 (51) passes through the other two large bearings (11) and is fixedly connected to the inner edges of the two large bearings (11).

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