A reducer assembly

Abstract

The utility model relates to the technical field of vehicle speed reducer, specifically relates to a kind of speed reducer assembly:Including first casing, second casing, input shaft assembly, intermediate shaft assembly and main reduction gear assembly, by setting reinforcing rib in the key position of speed reducer assembly, the strength and stability of box structure are significantly improved, specifically, first reinforcing rib and second reinforcing rib are located around mounting flange and reduction gear mounting cover respectively, the load-carrying capacity of second casing end face is enhanced, effectively prevent deformation, third reinforcing rib, fourth reinforcing rib and fifth reinforcing rib are located between corresponding bearing seat and corresponding casing inner wall, improve the fixing strength of bearing seat, reduce the risk of rupture under high load or impact load, so that speed reducer assembly is more reliable and durable under harsh working conditions, to solve the problem that the existing speed reducer box structure is simple, lacks enough structure to strengthen, improves the overall performance and service life of speed reducer.

Description

Technical Field

[0001] This utility model relates to the field of vehicle reducer technology, and in particular to a reducer assembly. Background Technology

[0002] In the power transmission system of automobiles or tricycles, the reduction gear assembly is a key component. Its function is to reduce the engine's output speed while increasing torque to meet the vehicle's driving needs.

[0003] The existing reducer assembly consists of a reducer housing, an input shaft assembly, an intermediate shaft assembly, and a main reduction gear assembly. The reducer housing is provided with an input bearing housing, an intermediate bearing housing, and a differential bearing housing. The input bearing housing is fitted with the input shaft assembly via an input bearing. The intermediate bearing housing is fitted with the intermediate shaft assembly via an intermediate bearing. The differential bearing housing is fitted with the main reduction gear assembly via a differential bearing.

[0004] However, the housing structure in existing reducer assemblies is relatively simple and lacks sufficient structural reinforcement, which makes them prone to deformation or cracking when subjected to high loads or impact loads. This limits the application of reducers under harsh working conditions and affects their reliability and durability. Utility Model Content

[0005] The purpose of this utility model is to provide a reducer assembly that solves the problem that the housing structure of existing reducer assemblies is relatively simple and lacks sufficient structural reinforcement, which makes them prone to deformation or cracking when subjected to high loads or impact loads, thus limiting the application of the reducer under harsh working conditions and affecting its reliability and durability.

[0006] To achieve the above objectives, this utility model provides a reducer assembly, which includes a first housing, a second housing, an input shaft assembly, an intermediate shaft assembly, and a main reduction gear assembly. The second housing is fixed to the first housing by bolts and is located on the front of the first housing. The two ends of the second housing away from the first housing have mounting flanges and reduction gear mounting covers, respectively. The first housing contains a first bearing seat, a second bearing seat, and a third bearing seat in sequence. The second housing also contains a fourth bearing seat, a fifth bearing seat, and a sixth bearing seat in sequence. Input bearings are installed inside the first and fourth bearing seats, and the input shaft assembly is installed between the two input bearings. Intermediate bearings are installed inside the second and fifth bearing seats, and the intermediate shaft assembly is installed between the two intermediate bearings. Differential bearings are installed inside the third and sixth bearing seats, and the main reduction gear assembly is installed between the two differential bearings.

[0007] A first reinforcing rib is provided between the periphery of the mounting flange and the end face of the second housing; a second reinforcing rib is provided between the periphery of the reduction gear mounting cover and the end face of the second housing; a third reinforcing rib is provided between the periphery of the second bearing seat and the inner wall of the first housing; a fourth reinforcing rib is provided between the periphery of the third bearing seat and the inner wall of the first housing; and a fifth reinforcing rib is provided between the periphery of the fifth bearing seat and the inner wall of the second housing.

[0008] The input shaft assembly has an input shaft toothed portion at one end near the first bearing housing, and the end of the input shaft assembly away from the first bearing housing is located inside the mounting flange. The intermediate shaft assembly has an intermediate shaft gear mounted at one end near the second bearing housing, and an intermediate shaft toothed portion at one end of the intermediate shaft assembly away from the second bearing housing. The main reduction gear assembly has a main reduction gear body mounted at one end away from the third bearing housing. The intermediate shaft gear meshes with the input shaft toothed portion, and the main reduction gear body meshes with the intermediate shaft toothed portion.

[0009] Specifically, the input shaft gear has 17 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 67 teeth, and the main reduction gear has 79 teeth.

[0010] Specifically, the input shaft gear has 27 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 58 teeth, and the main reduction gear has 79 teeth.

[0011] Specifically, the input shaft gear has 23 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 62 teeth, and the main reduction gear has 79 teeth.

[0012] Specifically, the input shaft gear has 22 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 64 teeth, and the main reduction gear has 79 teeth.

[0013] Specifically, the input shaft gear has 19 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 66 teeth, and the main reduction gear has 79 teeth.

[0014] Specifically, the input shaft gear has 25 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 61 teeth, and the main reduction gear has 79 teeth.

[0015] This utility model discloses a reducer assembly, comprising a first housing, a second housing, an input shaft assembly, an intermediate shaft assembly, and a main reduction gear assembly. By setting reinforcing ribs at key locations of the reducer assembly, the strength and stability of the housing structure are significantly improved. Specifically, the first and second reinforcing ribs are located around the mounting flange and the reduction gear mounting cover, respectively, enhancing the load-bearing capacity of the second housing end face and effectively preventing deformation. The third, fourth, and fifth reinforcing ribs are located between the corresponding bearing seats and the corresponding housing inner walls, improving the fixing strength of the bearing seats and reducing the risk of breakage under high loads or impact loads. This makes the reducer assembly more reliable and durable under harsh working conditions, thus solving the problem of simple existing reducer housing structures and lack of sufficient structural reinforcement, and improving the overall performance and service life of the reducer. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external structure of the reducer assembly provided by this utility model.

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the reducer assembly provided by this utility model.

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the second shell and the first shell provided by this utility model.

[0020] 101-First housing, 102-Second housing, 103-Input shaft assembly, 104-Intermediate shaft assembly, 105-Main reduction gear assembly, 106-Mounting flange, 107-Reduction gear mounting cover, 108-First bearing housing, 109-Second bearing housing, 110-Third bearing housing, 111-Fourth bearing housing, 112-Fifth bearing housing, 113-Sixth bearing housing, 114-Input bearing, 115-Intermediate bearing, 116-Differential bearing, 117-First reinforcing rib, 118-Second reinforcing rib, 119-Third reinforcing rib, 120-Fourth reinforcing rib, 121-Fifth reinforcing rib, 122-Input shaft gear, 123-Intermediate shaft gear, 124-Intermediate shaft gear, 125-Main reduction gear body. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] Please see Figures 1 to 3 This utility model provides a speed reducer assembly, which includes a first housing 101, a second housing 102, an input shaft assembly 103, an intermediate shaft assembly 104, and a main reduction gear assembly 105. The second housing 102 is bolted to the first housing 101 and is located on the front of the first housing 101. At both ends of the side of the second housing 102 away from the first housing 101, there are mounting flanges 106 and reduction gear mounting covers 107, respectively. Inside the first housing 101, a first bearing seat 108, a second bearing seat 109, and a third bearing seat 110 are sequentially arranged. Inside the second housing 102, there are sequentially arranged... The system comprises a fourth bearing housing 111, a fifth bearing housing 112, and a sixth bearing housing 113. An input bearing 114 is installed inside both the first bearing housing 108 and the fourth bearing housing 111. An input shaft assembly 103 is installed between the two input bearings 114. An intermediate bearing 115 is installed inside both the second bearing housing 109 and the fifth bearing housing 112. An intermediate shaft assembly 104 is installed between the two intermediate bearings 115. A differential bearing 116 is installed inside both the third bearing housing 110 and the sixth bearing housing 113. A main reduction gear assembly 105 is installed between the two differential bearings 116.

[0023] A first reinforcing rib 117 is provided between the periphery of the mounting flange 106 and the end face of the second housing 102; a second reinforcing rib 118 is provided between the periphery of the reduction gear mounting cover 107 and the end face of the second housing 102; a third reinforcing rib 119 is provided between the periphery of the second bearing seat 109 and the inner wall of the first housing 101; a fourth reinforcing rib 120 is provided between the periphery of the third bearing seat 110 and the inner wall of the first housing 101; and a fifth reinforcing rib 121 is provided between the periphery of the fifth bearing seat 112 and the inner wall of the second housing 102.

[0024] In this embodiment, by providing reinforcing ribs at key parts of the reducer assembly, the strength and stability of the housing structure are significantly improved. Specifically, the first reinforcing rib 117 and the second reinforcing rib 118 are located around the mounting flange 106 and the reduction gear mounting cover 107, respectively, enhancing the load-bearing capacity of the end face of the second housing 102 and effectively preventing deformation. The third reinforcing rib 119, the fourth reinforcing rib 120, and the fifth reinforcing rib 121 are located between the corresponding bearing seats and the corresponding housing inner walls, improving the fixing strength of the bearing seats and reducing the risk of breakage under high loads or impact loads. This makes the reducer assembly more reliable and durable under harsh working conditions, thus solving the problem of the existing reducer housing structure being simple and lacking sufficient structural reinforcement, and improving the overall performance and service life of the reducer.

[0025] Furthermore, the input shaft assembly 103 has an input shaft tooth 122 at one end near the first bearing housing 108, and the end of the input shaft assembly 103 away from the first bearing housing 108 is located inside the mounting flange 106. The intermediate shaft assembly 104 has an intermediate shaft gear 123 at one end near the second bearing housing 109, and an intermediate shaft tooth 124 at one end of the intermediate shaft assembly 104 away from the second bearing housing 109. The main reduction gear assembly 105 has a main reduction gear body 125 at one end away from the third bearing housing 110. The intermediate shaft gear 123 meshes with the input shaft tooth 122, and the main reduction gear body 125 meshes with the intermediate shaft tooth 124.

[0026] In this embodiment, since the input shaft gear 122 and the intermediate shaft gear 124 are arranged in an interleaved structure, and the intermediate shaft gear 123 and the main reduction gear body 125 are arranged in an interleaved structure, the overall structure of the reducer housing composed of the first housing 101 and the second housing 102 is thicker, further enhancing the overall strength of the entire reducer assembly.

[0027] Furthermore, the input shaft gear 122, the intermediate shaft gear 123, the intermediate shaft gear 124, and the main reduction gear body 125 are all thick gear structures, which is beneficial for increasing the meshing length.

[0028] Furthermore, the speed ratio of the reducer assembly is related to the number of teeth of the input shaft gear 122, the number of teeth of the intermediate shaft gear 124, the number of teeth of the intermediate shaft gear 123, and the number of teeth of the main reduction gear body 125.

[0029] Specifically, when the number of teeth of the input shaft gear 122 is 17, the number of teeth of the intermediate shaft gear 124 is 27, the number of teeth of the intermediate shaft gear 123 is 67, the number of teeth of the main reduction gear body 125 is 79, the speed ratio of the reducer assembly is 11.532.

[0030] When the number of teeth of the input shaft gear 122 is specifically 27, the number of teeth of the intermediate shaft gear 124 is specifically 27, the number of teeth of the intermediate shaft gear 123 is specifically 58, the number of teeth of the main reduction gear body 125 is specifically 79, and the speed ratio of the reducer assembly is 6.285;

[0031] When the number of teeth of the input shaft gear 122 is specifically 23, the number of teeth of the intermediate shaft gear 124 is specifically 27, the number of teeth of the intermediate shaft gear 123 is specifically 62, the number of teeth of the main reduction gear body 125 is specifically 79, and the speed ratio of the reducer assembly is 7.887;

[0032] When the number of teeth of the input shaft gear 122 is 22, the number of teeth of the intermediate shaft gear 124 is 27, the number of teeth of the intermediate shaft gear 123 is 64, the number of teeth of the main reduction gear body 125 is 7, and the speed ratio of the reducer assembly is 8.512;

[0033] When the input shaft gear 122 has 19 teeth, the intermediate shaft gear 124 has 27 teeth, the intermediate shaft gear 123 has 66 teeth, the main reduction gear body 125 has 79 teeth, and the speed ratio of the reducer assembly is 10.164.

[0034] When the number of teeth of the input shaft gear 122 is specifically 25, the number of teeth of the intermediate shaft gear 124 is specifically 27, the number of teeth of the intermediate shaft gear 123 is specifically 61, the number of teeth of the main reduction gear body 125 is specifically 79, and the speed ratio of the reducer assembly is 7.139.

[0035] Furthermore, both input bearings 114 are TM6322 bearings, both intermediate bearings 115 are NTN 62 / 28 bearings, and both differential bearings 116 are 6008 deep groove ball bearings.

[0036] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A speed reducer assembly, characterized in that, The device includes a first housing, a second housing, an input shaft assembly, an intermediate shaft assembly, and a main reduction gear assembly. The second housing is bolted to the first housing and is located on the front of the first housing. The two ends of the second housing away from the first housing have mounting flanges and reduction gear mounting covers, respectively. The first housing contains a first bearing housing, a second bearing housing, and a third bearing housing in sequence. The second housing contains a fourth bearing housing, a fifth bearing housing, and a sixth bearing housing in sequence. Input bearings are installed inside the first and fourth bearing housings, and the input shaft assembly is installed between the two input bearings. Intermediate bearings are installed inside the second and fifth bearing housings, and the intermediate shaft assembly is installed between the two intermediate bearings. Differential bearings are installed inside the third and sixth bearing housings, and the main reduction gear assembly is installed between the two differential bearings. A first reinforcing rib is provided between the periphery of the mounting flange and the end face of the second housing; a second reinforcing rib is provided between the periphery of the reduction gear mounting cover and the end face of the second housing; a third reinforcing rib is provided between the periphery of the second bearing seat and the inner wall of the first housing; a fourth reinforcing rib is provided between the periphery of the third bearing seat and the inner wall of the first housing; and a fifth reinforcing rib is provided between the periphery of the fifth bearing seat and the inner wall of the second housing.

2. The reducer assembly as described in claim 1, characterized in that, The input shaft assembly has an input shaft toothed portion at one end near the first bearing housing, and the end of the input shaft assembly away from the first bearing housing is located inside the mounting flange. The intermediate shaft assembly has an intermediate shaft gear mounted at one end near the second bearing housing, and an intermediate shaft toothed portion at one end of the intermediate shaft assembly away from the second bearing housing. The main reduction gear assembly has a main reduction gear body mounted at one end away from the third bearing housing. The intermediate shaft gear meshes with the input shaft toothed portion, and the main reduction gear body meshes with the intermediate shaft toothed portion.

3. The reducer assembly as described in claim 2, characterized in that, The input shaft gear has 17 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 67 teeth, and the main reduction gear has 79 teeth.

4. The reducer assembly as described in claim 2, characterized in that, The input shaft gear has 27 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 58 teeth, and the main reduction gear has 79 teeth.

5. The reducer assembly as described in claim 2, characterized in that, The input shaft gear has 23 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 62 teeth, and the main reduction gear has 79 teeth.

6. The reducer assembly as described in claim 2, characterized in that, The input shaft gear has 22 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 64 teeth, and the main reduction gear has 79 teeth.

7. The reducer assembly as described in claim 2, characterized in that, The input shaft gear has 19 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 66 teeth, and the main reduction gear has 79 teeth.

8. The reducer assembly as described in claim 2, characterized in that, The input shaft gear has 25 teeth, the intermediate shaft gear has 27 teeth, the intermediate shaft gear has 61 teeth, and the main reduction gear has 79 teeth.

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