CN216812710U - Power gear box - Google Patents

Abstract

The utility model relates to a power gear box, which comprises a gear box body, a power part and N groups of reduction gear assemblies in transmission connection with the power part, wherein N is more than or equal to 2, the gear box body comprises an upper shell and a lower shell which are detachably connected, the power part comprises a bracket connected with the upper shell and a cover body connected with the bracket, one end of the bracket far away from the upper shell is provided with an inward concave containing groove, the containing groove is internally provided with a circuit board, the cover body covers the containing groove to cover the circuit board, each group of reduction gear assemblies is provided with a gear shaft, the gear shaft is sleeved with the bearing, the upper shell and the lower shell are integrally formed with mounting grooves for embedding the bearing, and the mounting grooves for embedding the bearing are integrally formed with the upper shell and the lower shell, so that the bearing assembly tolerance accumulation can be reduced, and the assembly is more accurate.

Description

Power gear box

Technical Field

The utility model relates to the technical field of gear boxes, in particular to a power gear box.

Background

The ice machine is turning over the ice, the in-process of garrulous ice needs a rotational speed slow, the big gear box of moment of torsion drives ice tray or other parts and realizes turning over ice or garrulous ice, slow for realizing the rotational speed, the moment of torsion is big, general gear box all can set up at least two sets of reduction gear assembly, this has undoubtedly also increased to the equipment required precision of gear box, especially the installation of gear shaft, there is the error slightly, this error can be because reduction gear assembly is in large quantity and the accumulation, thereby influence the performance of whole gear box, in addition, all be equipped with the circuit board in the traditional gear box and be used for being connected with the outside electricity, but the circuit board generally sets up inconvenient maintenance and change in the gear box, consequently, how to solve above-mentioned problem and treat at present urgent.

SUMMERY OF THE UTILITY MODEL

In view of the current situation of the prior art, the technical problem to be solved by the present invention is to provide a power gearbox, which is more precise in assembly and more convenient in maintenance due to the installation position of the circuit board.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a power gear box comprises a gear box body, a power part and N groups of reduction gear assemblies in transmission connection with the power part, wherein N is larger than or equal to 2, the gear box body comprises an upper shell and a lower shell which are detachably connected, the power part comprises a support connected with the upper shell and a cover body connected with the support, one end, far away from the upper shell, of the support is provided with an inwards-recessed accommodating groove, a circuit board is arranged in the accommodating groove, the cover body covers the accommodating groove and is used for covering the circuit board, each group of reduction gear assemblies are provided with gear shafts, bearings are sleeved on the gear shafts, and mounting grooves for embedding the bearings are formed in the upper shell and the lower shell in an integrated mode.

Further, the power part further comprises a stator, a rotor and an output shaft, the stator is in interference sleeve joint with a central shaft of the support, the rotor is fixedly connected with the output shaft and synchronously rotates, the output shaft is in rotating fit with the central shaft of the support through a bearing, and the distance A from the upper end face of the stator to the upper end face of the rotor is greater than the distance B from the lower end face of the stator to the lower end face of the rotor.

Furthermore, N groups of reduction gear assemblies are meshed in sequence, a first group of reduction gear assemblies is meshed with an output shaft of the power part for transmission, the first group of reduction gear assemblies is meshed with the output shaft through helical teeth, and the Nth group of reduction gear assemblies is connected with the ice making part.

Further, except for the Nth group of reduction gear assemblies, the other reduction gear assemblies are duplicate gears.

Further, the upper shell and the lower shell are fixedly connected through screws, and a gasket is arranged between the coincident surfaces of the upper shell and the lower shell.

Furthermore, the cover body, the bracket and the upper shell are fixedly connected through screws in sequence.

Compared with the prior art, the utility model has the advantages that: the mounting groove for embedding the bearing is integrally formed with the upper shell and the lower shell, so that the bearing assembly tolerance accumulation can be reduced, the assembly is more accurate, the bearing is completely embedded with the mounting groove only by placing the bearing into the mounting groove, and the assembly tolerance generated when a worker installs the bearing is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the structure of the upper housing of the present invention;

as shown in the figure, 1 upper casing, 2 lower casing, 1.1, 2.1 mounting grooves, 3 supports, 3.1 accommodating grooves, 3.2 center shafts, 4 covers, 5 circuit boards, 6 first group reduction gear assemblies, 7 second group reduction gear assemblies, 8 third group reduction gear assemblies, 6.1, 7.1, 8.1 bearings, 9 stators, 10 rotors, 11 output shafts, 12 gaskets.

Detailed Description

The present invention will be further described with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-4, the utility model provides a power gear box, which comprises a gear box body, a power part and N groups of reduction gear assemblies in transmission connection with the power part, wherein N is more than or equal to 2, the gear box body comprises an upper shell 1 and a lower shell 2 which are detachably connected, the power part comprises a bracket 3 connected with the upper shell 1 and a cover body 4 connected with the bracket 3, one end of the bracket 3, far away from the upper shell 1, is provided with an inward concave accommodating groove 3.1, a circuit board 5 is accommodated in the accommodating groove 3.1, the cover body 4 covers the accommodating groove 3.1 to cover the circuit board 5, so that the disassembly and assembly are convenient, each group of reduction gear assemblies is provided with a gear shaft, bearings 6.1, 7.1 and 8.1 are sleeved on the gear shaft, and mounting grooves 1.1 and 2.1 for embedding the bearings 6.1, 7.1 and 8.1 are uniformly molded in the upper shell 1 and the lower shell 2.

Wherein, the power part also includes stator 9, rotor 10 and output shaft 11, the coil is winded on the stator 9, the coil is connected with the circuit board 5, the stator 9 is sleeved with the central shaft 3.2 of the bracket 3 in interference fit, the rotor 10 is fixedly connected with the output shaft 11 and rotates synchronously, the output shaft 11 is matched with the central shaft 3.2 of the bracket 3 by the bearing, the distance A from the upper end surface of the stator 9 to the upper end surface of the rotor 10 is larger than the distance B from the lower end surface of the stator 9 to the lower end surface of the rotor 10, thus the rotor 10 is subject to downward magnetic pull force, because the balance position between the rotor 10 and the stator 9 is equal to the distance A and the distance B in normal state, the magnetic pull force is offset in the balance position, and the structure setting that the distance A is larger than the distance B is adopted, because the output shaft 11 will move up and down in working, and the structure setting makes the rotor 10 subject to downward magnetic pull force, it also subjects the output shaft 11 to a downward magnetic pulling force which can be used to counteract some of the play force, reducing the play of the output shaft 11 up and down during operation and thus reducing noise.

The N groups of reduction gear assemblies are sequentially meshed, the first group of reduction gear assemblies 6 are in meshed transmission with the output shaft 11 of the power part, the first group of reduction gear assemblies 6 are meshed with the output shaft 11 through helical teeth, a helical tooth meshed structure is adopted, the output shaft 11 is subjected to downward rotary force in work, the rotary force is superposed with the magnetic pulling force to further offset the vertical movement force of the output shaft 11, the effects of shock absorption and noise reduction are further achieved, and the N group of reduction gear assemblies are connected with an ice making part.

Besides the Nth group of reduction gear assemblies, other reduction gear assemblies are duplicate gears, and occupation of space is reduced.

Wherein, go up casing 1 and casing 2 down and pass through screw fixed connection, should go up casing 1 and be equipped with gasket 12 down between casing 2's the coincidence face, gasket 12 plays sealed, dustproof, waterproof effect, goes up casing 1 and casing 2 can dismantle with down and is connected, convenient equipment and dismantlement.

The cover body 4, the support 3 and the upper shell 1 are fixedly connected through screws in sequence, and assembly and disassembly are facilitated.

Preferably, the reduction gear assemblies are 3 groups, the output shaft 11 of the power part is in meshing transmission with the first group of reduction gear assemblies 6, the first group of reduction gear assemblies 6 is in meshing transmission with the second group of reduction gear assemblies 7, the second group of reduction gear assemblies 7 is in meshing transmission with the third group of reduction gear assemblies 8, the third group of reduction gear assemblies 8 is in transmission connection with the ice making part, two ends or one end of a gear shaft in each group of reduction gear assemblies are sleeved with bearings 6.1, 7.1 and 8.1, the bearings 6.1, 7.1 and 8.1 are embedded in the mounting grooves 1.1 and 2.1 of the upper shell 1 and the lower shell 2, the reduction gear assemblies are locked and fixed up and down along with the covering of the upper shell 1 and the lower shell 2, wherein the adopted bearings are sliding bearings, and the thicknesses of the bearings are thinner, so that the overall structure of the power gear box is smaller and thinner.

According to the utility model, the mounting groove for embedding the bearing is integrally formed with the upper shell and the lower shell, so that the bearing assembly tolerance accumulation can be reduced, the assembly is more accurate, the bearing is only required to be placed into the mounting groove, and the bearing is completely embedded with the mounting groove, so that the assembly tolerance generated when a worker installs the bearing is avoided.

Materials, reagents and experimental equipment related to the embodiment of the utility model are all commercial products in the field of mechanical and electrical elements unless specified otherwise.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. A power gear box is characterized by comprising a gear box body, a power part and N groups of reduction gear assemblies in transmission connection with the power part, wherein N is larger than or equal to 2, the gear box body comprises an upper shell and a lower shell which are detachably connected, the power part comprises a support connected with the upper shell and a cover connected with the support, one end, far away from the upper shell, of the support is provided with an inwards-concave accommodating groove, a circuit board is contained in the accommodating groove, the cover covers the accommodating groove and is used for covering the circuit board, each group of reduction gear assemblies are provided with gear shafts, bearings are sleeved on the gear shafts, and mounting grooves for embedding the bearings are formed in the upper shell and the lower shell in an integrated mode.

2. The power gearbox as claimed in claim 1, wherein the power section further comprises a stator, a rotor and an output shaft, the stator is sleeved with the central shaft of the bracket in an interference manner, the rotor is fixedly connected with the output shaft and synchronously rotates, the output shaft is in rotating fit with the central shaft of the bracket through a bearing, and the distance A from the upper end face of the stator to the upper end face of the rotor is greater than the distance B from the lower end face of the stator to the lower end face of the rotor.

3. The power gear box of claim 2, wherein the N sets of reduction gear assemblies are sequentially engaged, the first set of reduction gear assemblies is engaged with the output shaft of the power unit, the engagement between the first set of reduction gear assemblies and the output shaft is helical gear engagement, and the N set of reduction gear assemblies is connected to the ice making unit.

4. A power gearbox according to claim 3 wherein, in addition to the nth set of reduction gear assemblies, the further reduction gear assemblies are duplicate gears.

5. The power gearbox as claimed in claim 1, wherein the upper casing and the lower casing are fixedly connected by screws, and a gasket is arranged between the coincident surfaces of the upper casing and the lower casing.

6. The power gearbox as claimed in claim 1, wherein the cover, the bracket and the upper housing are sequentially and fixedly connected by screws.

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