High-speed-ratio speed reducer

Abstract

The utility model discloses a high-speed-ratio speed reducer, and relates to the field of speed reducers. Comprising a motor and a reduction gearbox, the motor is provided with a motor gear, and a multi-tooth transmission system is arranged in the reduction gearbox; the multi-tooth transmission system comprises an inner circle rack arranged in an upper layer cavity of the reduction gearbox, the inner circle rack is provided with a driving gear extending into a middle layer cavity of the reduction gearbox, a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft are further arranged in the middle layer cavity, the first shaft is provided with a first tooth piece and a second tooth piece, the second shaft is provided with a third tooth piece and a fourth tooth piece, and the third shaft is provided with a fifth tooth piece and a sixth tooth piece. A seventh tooth piece and an eighth tooth piece are arranged on the fourth shaft, a ninth tooth piece and a tenth tooth piece are arranged on the fifth shaft, and the multiple sets of tooth pieces are meshed with one another. In order to achieve the speed ratio of 1: 500 or above, a conventional speed reducer needs to be additionally provided with a coupler and a reduction gearbox; the speed ratio of 1: 30000 or above can be achieved only through one reduction gearbox.

Description

TECHNICAL FIELD

[0001] The utility model relates to a big speed ratio speed reducer relates to the field of speed reducer. BACKGROUND

[0002] With the development of science and technology, the demand of characteristic speed reducer is more and more. Although the conventional speed reducer composed of two, three gear sets and the like is cheap, the corresponding speed reduction ratio is limited. Therefore, it is very necessary to develop a speed reducer with a large speed ratio. CONTENT

[0003] The utility model relates to a big speed ratio speed reducer.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] A big speed ratio speed reducer, comprising a motor and a speed reducer box, the motor is provided with a motor gear, and a multi-tooth transmission system is arranged in the speed reducer box; the multi-tooth transmission system comprises an internal circular rack arranged in the upper chamber of the speed reducer box, and the internal circular rack has a driving gear extending into the middle chamber of the speed reducer box; a multi-tooth transmission system is also arranged in the middle chamber, and the multi-tooth transmission system comprises a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft; the first shaft is provided with tooth pieces one and two, the second shaft is provided with tooth pieces three and four, the third shaft is provided with tooth pieces five and six, the fourth shaft is provided with tooth pieces seven and eight, and the fifth shaft is provided with tooth pieces nine and ten; the driving gear is engaged with the tooth piece one, the tooth piece two is engaged with the tooth piece three, the tooth piece four is engaged with the tooth piece five, the tooth piece six is engaged with the tooth piece seven, the tooth piece eight is engaged with the tooth piece nine, and the tooth piece ten is engaged with a second internal circular rack arranged in the lower chamber of the speed reducer box; the second internal circular rack is integrally formed with an output shaft.

[0006] The utility model has the advantages that:

[0007] 1. In order to realize a speed ratio of 1:500 or more, a conventional speed reducer needs to increase a shaft coupling and a speed reducer box; and the present application can realize a speed ratio of 1:30000 or more only by using one speed reducer box.

[0008] 2. The internal circular rack is subjected to stress, the stress is directly transmitted to the tooth wall, and the tooth wall completely digests the stress; compared with the gear box of a conventional speed reducer, the damage rate of the gear teeth and bearings and the like is greatly reduced.

[0009] 3. According to the speed ratio requirement of the speed reducer, the tooth number of the internal circular rack can be adjusted, so that the tooth shaft, tooth piece, snap spring and flat key and the like of the plurality of tooth pieces can adopt the same specification; therefore, the procurement cost and warehouse management are greatly helped.

[0010] 4. The output shaft adopts the second internal circular rack transmission, which also has good stress capacity and can reduce the damage rate of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 、 Figure 3 This is a structural breakdown diagram of the utility model from different perspectives;

[0014] Figure 4 、 Figure 5 The disassembled diagram of the reduction gearbox of the utility model from different perspectives;

[0015] Figure 6 、 Figure 7 Schematic diagram of the structure of the multi-tooth transmission system of the utility model from different perspectives;

[0016] Figure 8 Schematic diagram of the assembly structure of the gear plate 10 and the second internal rack;

[0017] Figure 9 Schematic diagram of the position of gear ten;

[0018] Figure 10 Schematic diagram of the structure of the second internal rack and the output shaft;

[0019] Reference numerals:

[0020] Motor 1, motor gear 101, reduction gear 2, multi-tooth transmission system 3, internal rack 301, driving gear 302, second internal rack 303, output shaft 304, gear piece 1 401, gear piece 2 402, gear piece 3 403, gear piece 404, gear piece 5 405, gear piece 6 406, gear piece 7 407, gear piece 8 408, gear piece 9 409, gear piece 10 410. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] The following combination Figures 1-9 , describes in detail the technical solutions provided by each embodiment of this application.

[0023] A large speed ratio reducer includes a motor 1 and a reduction box 2, the motor 1 is part of the prior art, which has a stator, a rotor and the like inside, the focus is that the motor 1 has a motor gear 101, which can provide power, and the reduction box 2 is provided with a multi-tooth transmission system 3.

[0024] The multi-tooth transmission system 3, first of all, it includes an inner circular rack 301 arranged in the upper layer cavity of the reduction box 2, the inner circular rack 301 has a driving gear 302 extending into the middle layer cavity, here the inner circular rack 301 is stressed, the inner circular rack 301 is driven to rotate by the motor gear 101, and then the driving gear 302 is driven to rotate by the inner circular rack 301, compared with the gear box of the conventional reducer, the stress is directly transmitted to the tooth wall, and the tooth wall completely digests it, and the damage rate of the tooth and bearing and other components is greatly reduced.

[0025] In the middle layer cavity, a multi-tooth transmission system is also arranged, which includes a shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft, wherein the first shaft has tooth pieces one 401 and tooth pieces two 402, the second shaft has tooth pieces three 403 and tooth pieces four 404, the third shaft has tooth pieces five 405 and tooth pieces six 406, the fourth shaft has tooth pieces seven 407 and tooth pieces eight 408, and the fifth shaft has tooth pieces nine 409 and tooth pieces ten 410, wherein the driving gear 302 and the tooth pieces one 401 are engaged, the tooth pieces two 402 and the tooth pieces three 403 are engaged, the tooth pieces four 404 and the tooth pieces five 405 are engaged, the tooth pieces six 406 and the tooth pieces seven 407 are engaged, and the tooth pieces eight 408 and the tooth pieces nine 409 are engaged.

[0026] A second inner circular rack 303 is arranged in the lower layer cavity, and the second inner circular rack 303 has an integrally formed output shaft 304, and the tooth pieces ten 410 are engaged with the second inner circular rack 303.

[0027] Through the design of multiple layers and multiple tooth pieces of the reduction box 2, the limit speed ratio of the conventional reducer with similar power and size is expanded to more than one hundred times.

[0028] Specifically, the gear transmission speed ratio is calculated as follows:

[0029] The motor gear 101 has 10 teeth, and the inner circular rack 301 has 102 teeth, which are engaged to generate a speed ratio of 1:10.2;

[0030] The driving gear 302 has 10 teeth, and the tooth pieces one 401 have 41 teeth, which are engaged to generate a speed ratio of 1:4.1;

[0031] The tooth pieces two 402 have 15 teeth, and the tooth pieces three 403 have 49 teeth, which are engaged to generate a speed ratio of 1:3.266;

[0032] The tooth pieces four 404 have 15 teeth, and the tooth pieces five 405 have 53 teeth, which are engaged to generate a speed ratio of 1:3.533;

[0033] Gear six 406 is 15 teeth, gear seven 407 is 57 teeth, both meshing, resulting in a speed ratio of 1:3.8;

[0034] Gear eight 408 is 15 teeth, gear nine 409 is 57 teeth, both meshing, resulting in a speed ratio of 1:3.8;

[0035] Gear ten 410 is 15 teeth, second inner circular rack 303 is 75 teeth, both meshing, resulting in a speed ratio of 1:5;

[0036] Finally, an output effect of 1:34840 is achieved.

[0037] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not required to include only those elements in the list, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0038] The above only is the embodiment of the present application, and is not used to limit the present application. The present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A high-ratio reduction gear comprising an electric motor (1) and a reduction gearbox (2), characterized in that: The motor (1) is provided with a motor gear (101), and a multi-tooth transmission system (3) is arranged in the reduction box (2); the multi-tooth transmission system (3) comprises an inner circular rack (301) arranged in the upper chamber of the reduction box (2), the inner circular rack (301) is provided with a driving gear (302) extending into the middle chamber of the reduction box (2), the multi-tooth transmission system is arranged in the middle chamber, and a second inner circular rack (303) is arranged in the lower chamber of the reduction box (2), the second inner circular rack (303) is provided with an output shaft (304) formed integrally, and the multi-tooth transmission system is meshed with the driving gear (302) and the second inner circular rack (303).

2. A high-ratio speed reducer according to claim 1, characterized in that: The multi-tooth transmission system comprises a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft, the first shaft is provided with tooth pieces one (401) and tooth pieces two (402), the second shaft is provided with tooth pieces three (403) and tooth pieces four (404), the third shaft is provided with tooth pieces five (405) and tooth pieces six (406), the fourth shaft is provided with tooth pieces seven (407) and tooth pieces eight (408), the fifth shaft is provided with tooth pieces nine (409) and tooth pieces ten (410), the driving gear (302) is meshed with the tooth pieces one (401), the tooth pieces two (402) are meshed with the tooth pieces three (403), the tooth pieces four (404) are meshed with the tooth pieces five (405), the tooth pieces six (406) are meshed with the tooth pieces seven (407), the tooth pieces eight (408) are meshed with the tooth pieces nine (409), and the tooth pieces ten (410) are meshed with the second inner circular rack (303).

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