Multifunctional noise reduction type speed reducer

Abstract

The utility model relates to the technical field of speed reducers, in particular to a multifunctional noise reduction type speed reducer which comprises a gear box and a speed reducing mechanism arranged on the inner side of the gear box, and the gear box is composed of an upper box body and a lower box body which are of the same structure. The lower box body comprises a containing box, a sealing edge and an outer cover, the sealing edge is arranged on the outer edge of the top end opening of the containing box, the outer cover is arranged on the periphery of the containing box in a covering mode, the end opening of the outer cover is sealed by the sealing edge, so that a gap exists between the containing box and the outer cover, the structure of the speed reducer can be more compact, and the integrity of the speed reducer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, and specifically relates to a multi-functional noise-reducing speed reducer. Background Art

[0002] Speed reducers are generally used in transmission equipment with low speed and high torque. The power of motors, internal combustion engines or other high-speed rotating power sources is transmitted through the meshing of gears with fewer teeth on the input shaft of the speed reducer and the large gears on the output shaft to achieve the purpose of speed reduction. Ordinary speed reducers also have several pairs of gears with the same principle to achieve the ideal speed reduction effect. The ratio of the number of teeth of the large and small gears is the transmission ratio. During the working transmission process of the speed reducer, vibration is likely to occur and noise is generated. In the prior art, for example, a noise-reducing protective cover for a speed reducer in a Chinese patent, publication number: CN115264033A, realizes the noise reduction of the speed reducer by setting a box-shaped protective cover around the speed reducer. However, such a structure will make the speed reducer too large in volume and have low integrity, making the speed reducer appear bulky. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a multi-functional noise-reducing speed reducer, which can make the structure of the speed reducer more compact and improve the integrity of the speed reducer.

[0004] To achieve the above purpose, the present utility model provides the following technical solution: A multi-functional noise-reducing speed reducer includes a gear box and a speed reduction mechanism arranged inside the gear box. The gear box is composed of an upper box body and a lower box body with the same structure; the lower box body includes a receiving box, a sealing edge and an outer cover. The sealing edge is arranged at the outer edge of the top port of the receiving box, and the outer cover covers the outer periphery of the receiving box, and the port of the outer cover is sealed by the sealing edge so that there is a gap between the receiving box and the outer cover.

[0005] Preferably, the gap is filled with plastic foam.

[0006] Preferably, the lower box body further includes two partition plates. The two partition plates are arranged inside the receiving box to divide the inner cavity of the receiving box into three chambers; the speed reduction mechanism includes three groups of gear sets and several transmission shafts. The three groups of gear sets are arranged corresponding to the three chambers, and adjacent two gear sets are connected by transmission shafts.

[0007] Preferably, the partition plates are of a hollow structure.

[0008] Preferably, several support columns are arranged on the bottom wall of the inner cavity of the outer cover, and all the support columns are in contact with the bottom of the receiving box.

[0009] Preferably, the outer cover and the sealing edge are fixedly connected by plugging.

[0010] Preferably, the outer shape of the outer cover is adapted to the outer shape of the receiving box.

[0011] Preferably, the upper box body and the lower box body are connected by bolts.

[0012] Preferably, the bottom wall of the inner cavity of the outer cover contacts the bottom surface of the accommodation box, and at the same time, the transverse cross-sectional dimension of the inner side wall of the outer cover is larger than the transverse cross-sectional dimension of the outer side wall of the accommodation box.

[0013] Preferably, the gear set includes a small gear and a large gear, and the small gear meshes with the large gear.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: by arranging a partition inside the accommodation box to form a plurality of independent chambers inside the accommodation box, the three gear sets of the speed reduction mechanism are respectively arranged in three chambers, and at the same time, the partition is of a hollow structure, which can not only reduce the mutual influence between the gear sets but also improve the noise reduction performance of this speed reducer. In addition, an outer cover is provided on the outer periphery of the accommodation box, and the outer cover is fixedly connected to the sealing edge of the accommodation box so that there is a gap between the outer cover and the outer periphery of the accommodation box, further improving the noise reduction performance of the speed reducer. Its structure is more compact compared with the speed reducers in the prior art, and the integrity of the speed reducer is also higher. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the speed reducer of the present utility model;

[0016] Figure 2 is a schematic diagram of the structure of the longitudinal section of the speed reducer of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure of the lower box body of the present utility model;

[0018] Figure 4 is a schematic diagram of the internal structure of the speed reducer of the present utility model after removing the upper box body.

[0019] In the figure: 1 upper box body; 2 lower box body, 21 accommodation box, 22 sealing edge, 23 partition, 24 outer cover; 3 speed reduction mechanism, 31 input shaft, 32 small gear, 33 large gear, 34 bearing, 35 output shaft, 36 transmission shaft. Detailed Description of the Embodiments

[0020] The following details the specific embodiments of the present utility model with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present utility model. Although the present utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative and do not limit the scope of the present utility model.

[0021] Specific Embodiment 1: Please refer to Figures 1-4A multi-functional noise reduction type speed reducer, comprising: a gear box and a speed reduction mechanism 3. The gear box is a closed structure with an accommodation cavity inside. The speed reduction mechanism 3 is installed inside the gear box. The speed reduction mechanism 3 includes an input shaft 31 and an output shaft 35, and both the input shaft 31 and the output shaft 35 at least partially extend outside the gear box. The gear box includes an upper box body 1 and a lower box body 2. The upper box body 1 and the lower box body 2 have the same structure, and the upper box body 1 is fixedly covered on the lower box body 2 by bolts.

[0022] The speed reduction mechanism 3 includes three groups of gear sets. Each group of gear sets includes a small gear 32 and a large gear 33. The small gear 32 and the large gear 33 within the same group are meshed. The speed reduction mechanism 3 further includes an input shaft 31, a plurality of bearings 34, an output shaft 35 and a plurality of transmission shafts 36. Among the three groups of gear sets, the adjacent two groups of gear sets are driven by the transmission shaft 36. The input shaft 31 is connected to the small gear 32 at the input end, and the output shaft 35 is connected to the large gear 33 at the output end. The input shaft 31, the output shaft 35 and the transmission shaft 36 are all connected to the gear box through the bearings 34.

[0023] The lower box body 2 includes an accommodation box 21, a sealing edge 22, two partition plates 23 and an outer cover 24. The accommodation box 21 has a convex-shaped structure. The two partition plates 23 are arranged inside the accommodation box 21 and divide the inner space of the accommodation box 21 into three chambers of the same size. The three chambers are arranged in one-to-one correspondence with the three groups of gear sets. Each gear set can operate independently in the corresponding chamber as an independent unit, which can reduce the interference between each other and also prevent the spread of noise. Further, the partition plate 23 is a hollow structure, and the hollow structure can further isolate the noise.

[0024] The sealing edge 22 is arranged at the outer edge of the top port of the accommodation box 21. When the lower box body 2 is fixedly connected to the upper box body 1, the sealing edge 22 of the lower box body 2 is closely attached to the sealing edge 22 of the upper box body 1, and at the same time, bolts penetrate through the two sealing edges 22. Through such a setting, the tightness of the internal space of the gear box is guaranteed to the greatest extent.

[0025] The outer cover 24 covers the outer periphery of the accommodation box 21, and at the same time, the port of the outer cover 24 is inserted and fixed to the sealing edge 22. At this time, the port of the outer cover 24 is closed by the sealing edge 22. The size of the outer cover 24 is larger than that of the accommodation box 21, so that there is a gap between the outer cover 24 and the accommodation box 21 after the outer cover 24 covers the accommodation box 21. The noise generated when the gear sets inside the accommodation box 21 work can be further isolated by the gap between the outer cover 24 and the accommodation box 21, so that the speed reducer realizes the function of noise reduction. The outer cover 24 is fixedly connected to the sealing edge 22, and at the same time, the outer shape of the outer cover 24 is mutually adapted to the outer shape of the accommodation box 21, so that the speed reducer not only has the function of noise reduction, but also its structure is more compact compared with the speed reducer in the prior art, and the integrity of the speed reducer is also improved.

[0026] In one embodiment, the gap between the outer cover 24 and the receiving box 21 can be filled with foam material, and the dense structure can cause the outer cover 24 to dent after being collided by an external force.

[0027] In one embodiment, in order to provide better support, a number of support columns (not shown in the figure) are provided on the bottom wall of the inner cavity of the outer cover 24. After installation, the support columns are in contact with the bottom of the receiving box 21, and the support columns can lift the receiving box 21 to provide more stable support; in another embodiment, it can also be that the bottom wall of the inner cavity of the outer cover 24 is in contact with the bottom surface of the receiving box 21, and the lateral cross-sectional dimension of the inner side wall of the outer cover 24 is larger than the lateral cross-sectional dimension of the outer side wall of the receiving box 21 to keep a distance between the two.

[0028] Through this technical solution, by arranging partitions inside the receiving box, multiple independent compartments are formed inside the receiving box. The three gear sets of the speed reduction mechanism are respectively arranged in the three compartments. At the same time, the partition is a hollow structure, which can not only reduce the mutual influence between the gear sets but also improve the noise reduction performance of this speed reducer. In addition, an outer cover is provided on the outer periphery of the receiving box, and the outer cover is fixedly connected to the sealing edge of the receiving box, so that there is a gap between the outer cover and the outer periphery of the receiving box, and the noise reduction performance of the speed reducer is further improved. Its structure is more compact than that of the speed reducers in the prior art, and the integrity of the speed reducer is also higher.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional noise-reducing reducer, comprising a gear box and a reduction mechanism (3) arranged inside the gear box, characterized in that: The gearbox is composed of an upper box body (1) and a lower box body (2) of the same structure; the lower box body (2) comprises a containing box (21), an edge seal (22) and an outer cover (24); the edge seal (22) is arranged at the outer edge of the top port of the containing box (21); the outer cover (24) is arranged on the outer periphery of the containing box (21); and the port of the outer cover (24) is sealed by the edge seal (22) so that a gap exists between the containing box (21) and the outer cover (24).

2. The multifunctional noise-reducing reducer according to claim 1, characterized in that: The gap is filled with plastic foam.

3. The multifunctional noise reduction reducer according to claim 1, characterized in that: The lower box body (2) further comprises two partitions (23), the two partitions (23) being arranged on the inner side of the containing box (21) so as to divide the inner cavity of the containing box (21) into three chambers; the speed reduction mechanism (3) comprises three sets of gear sets and a plurality of transmission shafts (36), the three sets of gear sets being arranged corresponding to the three chambers, and two adjacent gear sets being connected via the transmission shaft (36).

4. The multifunctional noise reduction reducer according to claim 3 is characterized in that: The partition plate (23) is a hollow structure.

5. The multifunctional noise reduction reducer according to claim 1, characterized in that: A plurality of support columns are provided on the bottom wall of the inner cavity of the outer cover (24), and the plurality of support columns are all in contact with the bottom of the containing box (21).

6. The multifunctional noise-reducing reducer according to claim 1, characterized in that: The outer cover (24) is fixedly connected to the edge seal (22) by plugging.

7. The multifunctional noise-reducing reducer according to claim 1, characterized in that: The outer cover (24) has an outer shape that matches the outer shape of the containing box (21).

8. The multifunctional noise-reducing reducer according to claim 1, characterized in that: The upper box body (1) and the lower box body (2) are connected by bolts.

9. The multifunctional noise-reducing reducer according to claim 1, characterized in that: The bottom wall of the inner cavity of the outer cover (24) contacts the bottom surface of the containing box (21), and the transverse cross-sectional dimension of the inner side wall of the outer cover (24) is greater than the transverse cross-sectional dimension of the outer side wall of the containing box (21).

10. The multifunctional noise-reducing reducer according to claim 3, characterized in that: The gear set includes a small gear and a large gear, and the small gear is meshed with the large gear.

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