A composite structure of inner and outer shafts with small rotational inertia

Abstract

The utility model provides an inner-outer shaft combined composite structure with small rotational inertia, comprising: an outer shaft, a left inner shaft, a left inner-outer shaft transmission mechanism and a right inner-outer shaft transmission mechanism, inner side surfaces at both left and right ends of the outer shaft are provided with inner ring grooves for installing the left inner-outer shaft transmission mechanism and the right inner-outer shaft transmission mechanism, and compared with the prior art, the utility model has the following beneficial effects: by adding the outer shaft, the left inner shaft, the right inner shaft, the left inner-outer shaft transmission mechanism and the right inner-outer shaft transmission mechanism, a group of left inner-outer shaft transmission mechanism and the right inner-outer shaft transmission mechanism are respectively installed on the inner sides of the inner ring grooves provided on the left and right sides of the outer shaft, so that the left and right ends of the outer shaft are respectively connected with the left inner shaft and the right inner shaft for transmission, so that the outer shaft drives the left inner shaft and the right inner shaft to rotate while rotating, the outer diameters of the left inner shaft and the right inner shaft are much smaller than the inner diameter of the outer shaft, so that the overall mass after the combination is reduced, and the inertia can be reduced, and by adding the outer shaft, the left inner-outer shaft transmission mechanism and the right inner-outer shaft transmission mechanism, it can be easy to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of inner and outer shaft combined composite structures, in particular to an inner and outer shaft combined composite structure with small rotational inertia. Background Art

[0002] The composite structure of inner and outer shafts usually refers to a complex mechanical transmission or support structure formed by the inner shaft and the outer shaft being nested and matched with each other and connected in a specific way. This structure is reflected in many mechanical equipment and engineering applications, such as gear boxes, bearing seats, transmission shafts, couplings, pump bodies, etc. However, in most common composite structures of inner and outer shafts, the inner shaft and the outer shaft are connected by interference fit, and the outer diameter of the inner shaft and the inner diameter of the outer shaft cooperate with each other to realize the transmission of the inner and outer shafts. This structure results in a large mass after the inner and outer shafts are combined, and the mass determines the inertia during the rotation process. The larger the mass, the greater the inertia. Therefore, this common composite structure of inner and outer shafts has a large inertia. The rotation stop control and start control of this composite structure require a large torque, resulting in relatively more energy consumption, which will increase energy consumption to a certain extent, which is not conducive to the long-term production and operation of the enterprise, and will reduce the market competitiveness of the enterprise on the basis of increased costs.

[0003] Secondly, the large inertia of the combined composite structure of inner and outer shafts will make it difficult to quickly brake the rotating mechanism when the equipment fails, which will lead to certain dangers.

[0004] In summary, the large inertia of the inner and outer shaft combined composite structure presents some problems in practical use, so it is hoped that a new structure can be proposed to solve the above technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an inner and outer shaft combined composite structure with small rotational inertia to solve the problems raised in the above background technology.

[0006] The utility model is realized through the following technical scheme: a composite structure of inner and outer shafts with small rotational inertia, comprising: an outer shaft, a left inner shaft, a left inner and outer transmission mechanism and a right inner and outer transmission mechanism, inner side surfaces at both ends of the outer shaft are provided with inner ring grooves for installing the left inner and outer transmission mechanism and the right inner and outer transmission mechanism, an inner side of the inner ring groove at the left end close to the center of the outer shaft is provided with a left inner and outer transmission mechanism for transmitting the rotation of the outer shaft to the left inner shaft, an inner side of the inner ring groove at the right end close to the center of the outer shaft is provided with a right inner and outer transmission mechanism for transmitting the rotation of the outer shaft to the right inner shaft, an inner side of the inner ring groove at the left end far from the center of the outer shaft is provided with a protective plug for reducing the entry of dust, a left inner shaft is provided inside the protective plug at the left end, and a right inner shaft is provided inside the protective plug at the right end.

[0007] As a preferred embodiment, bearing one is installed between the left inner and outer transmission mechanism and the left end protective plug and between the right inner and outer transmission mechanism and the right end protective plug, and bearing two is installed at the right end of the outer side of the left inner shaft and the left end of the outer side of the right inner shaft.

[0008] As a preferred embodiment, a left external gear is provided on the outer side of the left inner and outer transmission mechanism, a left internal gear is provided on the inner side of the left external gear, and the left inner shaft passes through the center of the left internal gear.

[0009] As a preferred embodiment, a right outer gear is provided on the outer side of the right inner and outer transmission mechanism, a right inner gear is provided on the inner side of the right outer gear, the right inner shaft passes through the center of the right inner gear, and the left and right ends of the outer shaft are respectively connected to the left inner shaft and the right inner shaft for transmission, so that the outer shaft drives the left inner shaft and the right inner shaft to rotate while rotating. The outer diameters of the left inner shaft and the right inner shaft are much smaller than the inner diameter of the outer shaft, which reduces the overall mass after the combination and can reduce inertia.

[0010] As a preferred embodiment, the inner side surface of the left outer gear is provided with left inner teeth, and the left inner teeth are meshed with the left inner gear;

[0011] The inner side surface of the right outer gear is provided with right inner teeth, and the right inner teeth are meshed with the right inner gear. The number of teeth of the left outer gear is different from that of the right outer gear, and the number of teeth of the left inner gear is different from that of the right inner gear.

[0012] As a preferred embodiment, the inner ring groove is provided with five groups of connecting threaded holes 1 equally distributed around the circumference on the side surface near the center of the outer shaft, and the left external gear and the right external gear are provided with connecting threaded holes 2 on the side surface away from the center of the outer shaft.

[0013] As a preferred embodiment, the left external gear and the right external gear are provided with a hidden groove at a position concentric with the second connecting threaded hole on the side surface of one end away from the center of the outer shaft;

[0014] The left external gear and the right external gear are connected and fixed to the outer shaft by screwing the hexagon socket bolts into the connecting threaded hole one and the inner side of the connecting threaded hole two. The left external gear and the right external gear are connected and fixed by the hexagon socket bolts, which can be easily disassembled and assembled.

[0015] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by adding an outer shaft, a left inner shaft, a right inner shaft, a left inner-outer transmission mechanism and a right inner-outer transmission mechanism, a group of left inner-outer transmission mechanism and a right inner-outer transmission mechanism are respectively installed on the inner sides of the inner ring grooves opened on the left and right sides of the outer shaft, so that the left and right ends of the outer shaft are respectively connected to the left inner shaft and the right inner shaft for transmission, so that the outer shaft drives the left inner shaft and the right inner shaft to rotate while rotating, and the outer diameters of the left inner shaft and the right inner shaft are much smaller than the inner diameter of the outer shaft, thereby reducing the overall mass after the combination and reducing inertia. By adding an outer shaft, a left inner-outer transmission mechanism and a right inner-outer transmission mechanism, disassembly and assembly can be facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of an inner and outer shaft combined composite structure with small rotational inertia of the utility model.

[0018] Figure 2 This is a structural schematic diagram of the utility model in which the outer shaft is removed from a composite structure of an inner shaft and an outer shaft with small rotational inertia.

[0019] Figure 3 The utility model is a schematic structural diagram of an outer shaft in an inner and outer shaft combined composite structure with small rotational inertia.

[0020] Figure 4 It is a partial structural schematic diagram of the left inner and outer transmission mechanism in an inner and outer shaft combined composite structure with small rotational inertia of the utility model.

[0021] Figure 5 It is a partial structural schematic diagram of the right inner and outer transmission mechanism in an inner and outer shaft combined composite structure with small rotational inertia of the utility model.

[0022] Figure 6 It is a structural schematic diagram of the left external gear in an internal and external shaft combined composite structure with small rotational inertia of the utility model.

[0023] Figure 7 It is a structural schematic diagram of the right external gear in an internal and external shaft combined composite structure with small rotational inertia of the utility model.

[0024] In the figure, 100 is an outer shaft, 101 is an inner ring groove, 102 is a connecting threaded hole;

[0025] 200-left inner shaft;

[0026] 300-right inner shaft;

[0027] 400-left inner and outer transmission mechanism, 401-left outer gear, 402-left inner gear;

[0028] 500-right inner and outer disassembly transmission mechanism, 501-right outer gear, 502-right inner gear;

[0029] 600-anti-dust clogging;

[0030] 401a-left inner tooth, 401b-connecting threaded hole 2, 401c-hidden groove;

[0031] 501a-Right inner tooth. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figures 1 to 7 The utility model provides a technical solution: an inner and outer shaft composite structure with small rotational inertia, comprising: an outer shaft 100, a left inner shaft 200, a left inner and outer transmission mechanism 400 and a right inner and outer transmission mechanism 500, and inner ring grooves 101 for installing the left inner and outer transmission mechanism 400 and the right inner and outer transmission mechanism 500 are provided on the inner side surfaces of the left and right ends of the outer shaft 100;

[0034] A left inner and outer transmission mechanism 400 is provided on the inner side of the left inner ring groove 101 near the center of the outer shaft 100 for transmitting the rotation of the outer shaft 100 to the left inner shaft 200, and a right inner and outer transmission mechanism 500 is provided on the inner side of the right inner ring groove 101 near the center of the outer shaft 100 for transmitting the rotation of the outer shaft 100 to the right inner shaft 300;

[0035] A protective plug 600 for reducing dust entry is provided on the inner side of the inner ring groove 101 at both ends away from the center of the outer shaft 100. The left inner shaft 200 is provided on the inner side of the left end protective plug 600, and the right inner shaft 300 is provided on the inner side of the right end protective plug 600.

[0036] Bearing 1 is installed between the left inner and outer transmission mechanism 400 and the left end protective plug 600 and between the right inner and outer transmission mechanism 500 and the right end protective plug 600, and bearing 2 is installed at the right end of the outer side of the left inner shaft 200 and the left end of the outer side of the right inner shaft 300.

[0037] A left external gear 401 is disposed on the outer side of the left internal and external transmission mechanism 400 , a left internal gear 402 is disposed on the inner side of the left external gear 401 , and the left inner shaft 200 passes through the center of the left internal gear 402 .

[0038] A right outer gear 501 is provided on the outside of the right inner and outer transmission mechanism 500, and a right inner gear 502 is provided on the inside of the right outer gear 501. The right inner shaft 300 passes through the center of the right inner gear 502. The left and right ends of the outer shaft 100 are respectively connected to the left inner shaft 200 and the right inner shaft 300 for transmission, so that the outer shaft 100 drives the left inner shaft 200 and the right inner shaft 300 to rotate while rotating. The outer diameters of the left inner shaft 200 and the right inner shaft 300 are much smaller than the inner diameter of the outer shaft 100, which reduces the overall mass of the combination, thereby reducing inertia.

[0039] See also Figure 1-Figure 5 As the first embodiment of the utility model: first, the user installs a set of left inner and outer transmission mechanisms 400 and right inner and outer transmission mechanisms 500 on the inner sides of the inner ring grooves 101 opened on the left and right sides of the outer shaft 100, respectively, so that the left and right ends of the outer shaft 100 are respectively connected with the left inner shaft 200 and the right inner shaft 300 for transmission. Secondly, the outer shaft 100 can drive the left inner shaft 200 and the right inner shaft 300 to rotate while rotating. The outer diameters of the left inner shaft 200 and the right inner shaft 300 are much smaller than the inner diameter of the outer shaft 100, thereby reducing the overall mass of the combination, thereby achieving the effect of reducing inertia.

[0040] The inner side surface of the left outer gear 401 is provided with a left inner tooth 401a, and the left inner tooth 401a meshes with the left inner gear 402;

[0041] The inner side of the right outer gear 501 is provided with right inner teeth 501a, which mesh with the right inner gear 502. The left outer gear 401 and the right outer gear 501 have different numbers of teeth, and the left inner gear 402 and the right inner gear 502 have different numbers of teeth.

[0042] See also Figure 1-Figure 7 , as the second embodiment of the utility model: based on the above-mentioned first embodiment, the inner side surface of the left outer gear 401 is provided with left inner teeth 401a, and the inner side surface of the right outer gear 501 is provided with right inner teeth 501a, the left inner shaft 200 and the right inner shaft 300 are respectively connected by the left inner-outer rotation mechanism 400 and the right inner-outer transmission mechanism 500, and the left outer gear 401 and the right outer gear 501 have different numbers of teeth, and the left inner gear 402 and the right inner gear 502 have different numbers of teeth, so that the rotation speeds transmitted by the outer shaft 10 to the left inner shaft 200 and the right inner shaft 300 are different, thereby achieving the effect of differential rotation.

[0043] The inner ring groove 101 is provided with five groups of connecting threaded holes 102 equally distributed on the circumference on the side surface of one end close to the center of the outer shaft 100, and the left outer gear 401 and the right outer gear 501 are provided with connecting threaded holes 401b on the side surface away from the center of the outer shaft 100.

[0044] A hidden groove 401c is provided on the side surface of the left external gear 401 and the right external gear 501 away from the center of the outer shaft 100 and concentric with the second connecting threaded hole 401b;

[0045] The left external gear 401 and the right external gear 501 are connected and fixed to the outer shaft 100 by screwing the hexagon socket bolts into the connecting threaded hole 102 and the inner side of the connecting threaded hole 2 401b. The left external gear 401 and the right external gear 501 are connected and fixed by the hexagon socket bolts, which can be easily disassembled and assembled.

[0046] See also Figure 1-Figure 7 , as the third embodiment of the utility model: first, the user embeds the left external gear 401 and the right external gear 501 into the inner side of the inner ring groove 101 opened at the left and right ends of the outer shaft 100 respectively, and then the user screws the hexagon socket bolts into the connecting threaded hole 102 and the inner side of the connecting threaded hole 2 401b to respectively connect and fix the left external gear 401 and the right external gear 501 to the outer shaft 100, so that the left external gear 401 and the right external gear 500 and the outer shaft 100 are detachable structures, so that the left internal and external transmission mechanism 400 and the right internal and external transmission mechanism 500 can be disassembled and replaced conveniently according to actual needs.

[0047] The above description is only a preferred embodiment of the present invention and is 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 inner and outer shaft combined composite structure with small rotational inertia, comprising: An outer shaft (100), a left inner shaft (200), a left inner and outer transmission mechanism (400) and a right inner and outer transmission mechanism (500), characterized in that: inner surfaces at both ends of the outer shaft (100) are provided with inner ring grooves (101) for mounting the left inner and outer transmission mechanism (400) and the right inner and outer transmission mechanism (500); A left inner and outer transmission mechanism (400) for transmitting the rotation of the outer shaft (100) to the left inner shaft (200) is provided on the inner side of the left inner ring groove (101) near the center of the outer shaft (100), and a right inner and outer transmission mechanism (500) for transmitting the rotation of the outer shaft (100) to the right inner shaft (300) is provided on the inner side of the right inner ring groove (101) near the center of the outer shaft (100); A protective plug (600) for reducing dust ingress is provided on the inner side of the inner ring groove (101) at the left and right ends, away from the center of the outer shaft (100); a left inner shaft (200) is provided on the inner side of the protective plug (600) at the left end, and a right inner shaft (300) is provided on the inner side of the protective plug (600) at the right end.

2. The composite structure of inner and outer shafts with small rotational inertia as claimed in claim 1, characterized in that: Bearing 1 is installed between the left inner and outer transmission mechanism (400) and the left end protective plug (600) and between the right inner and outer transmission mechanism (500) and the right end protective plug (600), and bearing 2 is installed at the right end of the outer side of the left inner shaft (200) and the left end of the outer side of the right inner shaft (300).

3. The composite structure of inner and outer shafts with small rotational inertia as claimed in claim 2, characterized in that: A left external gear (401) is disposed on the outside of the left internal and external transmission mechanism (400), a left internal gear (402) is disposed on the inside of the left external gear (401), and the left internal shaft (200) passes through the center of the left internal gear (402).

4. The inner and outer shaft combined composite structure with small rotational inertia as claimed in claim 3, characterized in that: A right external gear (501) is disposed on the outside of the right internal and external transmission mechanism (500), a right internal gear (502) is disposed on the inside of the right external gear (501), and the right internal shaft (300) passes through the center of the right internal gear (502).

5. The inner and outer shaft combined composite structure with small rotational inertia as claimed in claim 4, characterized in that: The inner side surface of the left outer gear (401) is provided with left inner teeth (401a), and the left inner teeth (401a) and the left inner gear (402) are meshed with each other; The inner side surface of the right outer gear (501) is provided with right inner teeth (501a), and the right inner teeth (501a) mesh with the right inner gear (502). The number of teeth of the left outer gear (401) and the right outer gear (501) are different, and the number of teeth of the left inner gear (402) and the right inner gear (502) are different.

6. The composite structure of inner and outer shafts with small rotational inertia as claimed in claim 3, characterized in that: The inner ring groove (101) is provided with five groups of connecting threaded holes (102) equally distributed in a circumference on the side surface of one end close to the center of the outer shaft (100), and the left outer gear (401) and the right outer gear (501) are both provided with connecting threaded holes (401b) on the side surfaces of one end away from the center of the outer shaft (100).

7. The composite structure of inner and outer shafts with small rotational inertia as claimed in claim 6, characterized in that: The left external gear (401) and the right external gear (501) are provided with a hidden groove (401c) at a position concentric with the second connecting threaded hole (401b) on the side surface of one end away from the center of the outer shaft (100); The left external gear (401) and the right external gear (501) are connected and fixed to the outer shaft (100) by means of hexagon socket bolts screwed into the inner sides of the first connecting threaded hole (102) and the second connecting threaded hole (401b).

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