Main speed reducer shell assembly

Abstract

The embodiment of the invention provides a main speed reducer shell assembly, and relates to the technical field of automobile parts. The main speed reducer shell assembly comprises a cast aluminum shell which comprises a containing cavity, and the containing cavity is at least used for installing a main speed reducer; and the at least one cast iron reinforcer is arranged in the accommodating cavity and is fixedly connected with the cast aluminum shell so as to enhance the rigidity of the cast aluminum shell. According to the device, the cast aluminum shell is used as a main base body, and the cast iron reinforcer is embedded in a key loaded part, so that the loaded requirement of the cast aluminum shell of the main speed reducer is ensured, the design concept of light weight is obviously realized, and the problems that the cast aluminum shell of the main speed reducer is poor in bearing capacity and easy to break, and the safety performance is influenced are solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a main reducer housing assembly. Background Art

[0002] The commercial vehicle reducer is an important component in the mechanical transmission system, and its main function is to reduce speed and increase output torque. Specifically, the reducer can reduce the speed of the motor / engine output and increase the output torque at the same time, thereby meeting the speed and torque requirements of different working machines. The reducer is an independent system consisting of a gear drive, a worm drive, and a gear-worm drive enclosed in a rigid housing. The outermost main reducer housing is an important component of the reduction system. Its main function is to provide support for the gears, bearings, worms and other components inside the reduction system to ensure that its internal components are properly meshed. Therefore, the working environment of the main reducer housing is relatively harsh and the load conditions are complex, and it is the main load-bearing structural component.

[0003] At present, most of the main reducer housings on the market are generally made of cast iron or cast aluminum. Although cast iron can meet the requirements of bearing complex loads, the main reducer housing is large in size and heavy in weight, which increases energy consumption and does not meet the industry development requirements of energy conservation and emission reduction. Therefore, cast aluminum is used to reduce the weight of the main reducer housing to reduce energy consumption.

[0004] However, the main reducer adopts a cast aluminum shell with poor load-bearing capacity and is prone to breakage, which affects safety performance. Summary of the invention

[0005] The present application provides a main reducer housing assembly, which is used to solve the problem that the main reducer adopts a cast aluminum housing with poor bearing capacity, is prone to breakage, and affects safety performance.

[0006] The present application provides a main reducer housing assembly, comprising:

[0007] The cast aluminum housing comprises a receiving cavity, and the receiving cavity is used to install at least the main reducer;

[0008] At least one cast iron reinforcement is arranged in the accommodating cavity and fixedly connected to the cast aluminum shell to enhance the rigidity of the cast aluminum shell.

[0009] As in the above main reducer housing assembly, the cast iron reinforcement comprises a first cast iron reinforcement portion and at least one second cast iron reinforcement portion;

[0010] The second cast iron reinforcement portion is perpendicular to the plane where the first cast iron reinforcement portion is located;

[0011] The second cast iron reinforcement part is used to fix the cast iron reinforcement to the cast aluminum shell;

[0012] The first cast iron reinforcement portion includes a reinforcement portion connecting surface and a reinforcement portion opening;

[0013] The reinforcement portion connecting surface is fixedly connected to at least one second cast iron reinforcement portion, and the reinforcement portion opening is used for installing the bearing of the main reducer.

[0014] In the above main reducer housing assembly, an annular wall is provided at the opening of the reinforcement portion, the annular wall and the opening of the reinforcement portion are coaxially arranged, and the annular wall and the second cast iron reinforcement portion are arranged on the same side of the connection surface of the reinforcement portion;

[0015] The inner diameter of the annular wall is greater than the diameter of the opening of the reinforcement portion, so that a supporting wall is formed between the annular wall and the opening of the reinforcement portion.

[0016] As in the above main reducer housing assembly, the second cast iron reinforcement portion is a cylindrical rod;

[0017] At least one groove is arranged in the axial direction of the cylindrical rod.

[0018] As for the main reducer housing assembly as above, cast iron reinforcement ribs are provided on the connection surface of the reinforcement part;

[0019] The cast iron reinforcement rib extends along the radial direction of the reinforcement opening and is located at the outer side of the reinforcement opening.

[0020] As shown in the above main reducer housing assembly, the cast iron reinforcement and the cast aluminum housing are fixedly connected by a low-pressure casting molding method.

[0021] As shown in the above main reducer housing assembly, a material escape opening is provided on the connection surface of the reinforcement portion so that the aluminum liquid can be filled into the material escape opening during the low-pressure casting process.

[0022] As in the above main reducer housing assembly, there are multiple escape openings, an escape ring is provided on the connection surface of the reinforcement portion, and the escape ring is arranged on the side away from the second cast iron reinforcement portion;

[0023] The escape ring is used to connect multiple escape openings so that aluminum liquid can be filled into all the escape openings during the low-pressure casting process.

[0024] As for the main reducer housing assembly, the cast aluminum housing includes a first mounting surface and a second mounting surface, the first mounting surface is the surface where the accommodating cavity is located, and the second mounting surface is the surface away from the accommodating cavity;

[0025] The cast aluminum shell further includes at least one transverse reinforcing rib, at least one vertical reinforcing rib and at least one local reinforcing rib;

[0026] The transverse reinforcement ribs and the vertical reinforcement ribs are fixedly arranged on the second mounting surface;

[0027] Local reinforcement ribs are arranged on the first mounting surface to enhance the rigidity of the cast aluminum shell.

[0028] As the main reducer housing assembly above, the cast aluminum housing further comprises a mounting body structure and at least one body reinforcing rib;

[0029] The first end of the mounting body structure is arranged on the first mounting surface, and the second end of the mounting body structure is arranged on the second mounting surface;

[0030] The main body reinforcement rib is arranged on the second installation surface and is fixedly connected to the first end of the installation main body structure to enhance the rigidity of the cast aluminum shell.

[0031] The present application provides a main reducer housing assembly, comprising: a cast aluminum housing, comprising a accommodating cavity, the accommodating cavity being used to at least install the main reducer; at least one cast iron reinforcement member, arranged in the accommodating cavity and fixedly connected to the cast aluminum housing, so as to enhance the rigidity of the cast aluminum housing. By taking the cast aluminum housing as the main matrix and embedding the cast iron reinforcement members at key load-bearing positions, the load-bearing requirements of the cast aluminum housing of the main reducer are guaranteed, and the lightweight design concept is significantly realized, thereby solving the problem that the cast aluminum housing of the main reducer has poor load-bearing capacity, is prone to breakage, and affects safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 The structure of the main reducer housing assembly provided in the embodiment of the present application is schematically shown in FIG. Figure 1 ;

[0034] Figure 2 The structure of the cast aluminum housing provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0035] Figure 3 Schematic diagram of the structure of the cast iron reinforcement provided in the embodiment of the present application Figure 1 ;

[0036] Figure 4 Schematic diagram of the structure of the cast iron reinforcement provided in the embodiment of the present application Figure 2 ;

[0037] Figure 5 A schematic diagram of the structure of the sand core composite provided in the embodiment of the present application;

[0038] Figure 6 The structure of the main reducer housing assembly provided in the embodiment of the present application is schematically shown in FIG. Figure 2 .

[0039] Reference numerals:

[0040] 100-cast aluminum housing;

[0041] 110-accommodating chamber;

[0042] 120-first mounting surface;

[0043] 130- second mounting surface;

[0044] 140- transverse reinforcement;

[0045] 150-vertical reinforcement;

[0046] 160-local reinforcement;

[0047] 170-install the main structure;

[0048] 171- axial assembly surface of the upper end face; 172- threaded hole for installing the oil nozzle; 173- mounting surface of the main reduction gear stud; 174- stud through hole for the main reduction gear;

[0049] 180-main reinforcement ribs;

[0050] 190-lower bearing mounting structure; 191-lower bearing assembly surface;

[0051] 200-cast iron reinforcement;

[0052] 210-first cast iron reinforcement;

[0053] 211-reinforcement connection surface; 212-reinforcement opening; 213-annular wall; 214-support wall; 215-cast iron reinforcement rib; 216-escape opening; 217-escape ring;

[0054] 220- second cast iron reinforcement;

[0055] 221-groove;

[0056] 300-Sand core. DETAILED DESCRIPTION

[0057] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present application. Instead, they are only examples of devices and equipment consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0058] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. For example, the first chip and the second chip are only used to distinguish different chips, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0059] It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way. In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more.

[0060] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the main reducer housing assembly provided in the embodiment of the present application is only used as an example, and the main reducer housing assembly can also include more or less content.

[0061] As shown in the background technology, in the prior art, according to the material, most of the main reducer housings on the market are generally made of cast iron or cast aluminum. Although the use of cast iron can meet the requirements of bearing complex loads, the main reducer housing is large in size and heavy in weight, which increases energy consumption and does not meet the industry development requirements of energy conservation and emission reduction. Therefore, cast aluminum is used to reduce the weight of the main reducer housing to reduce energy consumption. Although the weight is greatly reduced, due to the process and material characteristics of low-pressure cast aluminum, the load-bearing parts are prone to fracture risks, causing safety hazards and high life costs.

[0062] In summary, the main reducer uses a cast aluminum shell with poor load-bearing capacity and is prone to breakage, affecting safety performance.

[0063] Based on this, an embodiment of the present application provides a main reducer housing assembly, including: a cast aluminum housing, including a accommodating cavity, the accommodating cavity is at least used to install the main reducer; at least one cast iron reinforcement is arranged in the accommodating cavity and fixedly connected to the cast aluminum housing to enhance the rigidity of the cast aluminum housing. Taking the above situation into comprehensive consideration and combining the respective advantages of iron parts and aluminum parts, the cast aluminum housing is used as the main matrix, and the cast iron reinforcements are embedded in key load-bearing parts. This not only ensures the load requirements of the cast aluminum housing of the main reducer, but also significantly realizes the lightweight design concept, solves the problem that the cast aluminum housing of the main reducer has poor load-bearing capacity, is prone to breakage, and affects safety performance, and provides new ideas for the design and development of such products.

[0064] Figure 1 The structure of the main reducer housing assembly provided in the embodiment of the present application is schematically shown in FIG. Figure 1 ; Figure 2 A schematic diagram of the structure of a cast aluminum housing provided in an embodiment of the present application; Figure 3 Schematic diagram of the structure of the cast iron reinforcement provided in the embodiment of the present application Figure 1 . Figure 2 exist Figure 1 Based on the above, the structure of the cast aluminum housing of the main reducer housing assembly is shown; Figure 3 exist Figure 1 Based on the results, the structure of the cast iron reinforcement of the main reducer housing assembly is shown.

[0065] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present application provides a main reducer housing assembly, comprising:

[0066] The cast aluminum housing 100 includes a receiving chamber 110, and the receiving chamber 110 is at least used for installing the main reducer;

[0067] At least one cast iron reinforcement 200 is disposed in the accommodating cavity 110 and fixedly connected to the cast aluminum shell 100 to enhance the rigidity of the cast aluminum shell 100 .

[0068] The cast aluminum shell 100 is used as the main base, and cast iron reinforcements 200 are embedded in key load-bearing locations, which not only ensures the load-bearing requirements of the cast aluminum shell 100 of the main reducer, but also significantly realizes the lightweight design concept, solving the problem that the cast aluminum shell 100 of the main reducer has poor load-bearing capacity, is prone to breakage, and affects safety performance.

[0069] Figure 4 Schematic diagram of the structure of the cast iron reinforcement provided in the embodiment of the present application Figure 2 . Figure 4 exist Figure 3 On this basis, the specific structure of the cast iron reinforcement is further demonstrated.

[0070] like Figure 4 As shown, in some embodiments, the cast iron reinforcement 200 includes a first cast iron reinforcement portion 210 and at least one second cast iron reinforcement portion 220;

[0071] The second cast iron reinforcement portion 220 is perpendicular to the plane where the first cast iron reinforcement portion 210 is located;

[0072] The second cast iron reinforcement part 220 is used to fix the cast iron reinforcement 200 to the cast aluminum shell 100;

[0073] The first cast iron reinforcement part 210 includes a reinforcement part connection surface 211 and a reinforcement part opening 212;

[0074] The reinforcement portion connecting surface 211 is fixedly connected to at least one second cast iron reinforcement portion 220 , and the reinforcement portion opening 212 is used for installing the bearing of the main reducer.

[0075] Exemplarily, the number of the second cast iron reinforcement parts 220 may be multiple, such as 4, 6, etc., which is not limited in the embodiment of the present application and can be selected according to actual needs.

[0076] For example, the second cast iron reinforcement portion 220 may be in the shape of a column, and the cross-sectional shape may be circular, polygonal, or the like.

[0077] Exemplarily, the reinforcement portion connection surface 211 is provided with a plurality of countersunk holes according to the number of the second cast iron reinforcement portions 220, and screws can be used to fix the reinforcement portion connection surface 211 and the second cast iron reinforcement portion 220 through the countersunk holes. Other connection methods such as welding can also be used to fix the reinforcement portion connection surface 211 and the second cast iron reinforcement portion 220.

[0078] The opening shape of the reinforcement opening 212 is circular and is used for mounting the bearing of the main reducer.

[0079] The cast iron reinforcement 200 is fixedly connected to the cast aluminum shell 100 through the second cast iron reinforcement portion 220 to enhance the rigidity of the cast aluminum shell 100 .

[0080] In some embodiments, an annular wall 213 is provided at the reinforcement opening 212, the annular wall 213 and the reinforcement opening 212 are coaxially arranged, and the annular wall 213 and the second cast iron reinforcement 220 are arranged on the same side of the reinforcement connection surface 211;

[0081] The inner diameter of the annular wall 213 is greater than the diameter of the reinforcing portion opening 212 , so that a supporting wall 214 is formed between the annular wall 213 and the reinforcing portion opening 212 .

[0082] Specifically, the reinforcement opening 212 includes an opening and a support wall 214 perpendicular to the plane where the opening is located. The support wall 214, the annular wall 213 and the second cast iron reinforcement 220 are arranged on the same side of the reinforcement connecting surface 211. The annular wall 213 is close to the reinforcement opening 212 and is coaxially arranged. The inner side of the annular wall 213 serves as the axial surface of the bearing assembly, and the support wall 214 serves as the bottom surface of the bearing assembly.

[0083] The annular wall 213 and the reinforcement opening 212 cooperate to facilitate the installation of the bearing of the final reducer.

[0084] In some embodiments, the second cast iron reinforcement 220 is a cylindrical rod;

[0085] At least one groove 221 is provided in the axial direction of the cylindrical rod.

[0086] Exemplarily, the groove 221 may be arranged in a ring shape along the outer side of the cylindrical rod to form a circular groove 221 .

[0087] For example, a plurality of grooves 221 , such as 3 grooves, may be evenly arranged at preset intervals in the axial direction of the cylindrical rod.

[0088] In one example, the cast iron reinforcement 200 is assembled by the first cast iron reinforcement part 210, a plurality of cylindrical rods, and a plurality of hexagon socket screws. A threaded hole is provided inside one end of the cylindrical rod. The size of the hexagon socket screw matches the size of the threaded hole at one end of the cylindrical rod, and can be selected according to actual needs. For example, the number of cylindrical rods and hexagon socket screws can be 4.

[0089] For example, due to the size limitation of the cylindrical rod, the cast iron reinforcement 200 cannot be produced by one-piece casting, and a split assembly method can be adopted, that is, the first cast iron reinforcement part 210 is formed by casting, and the cylindrical rod is forged, and then the two are assembled together by screws to form the cast iron reinforcement 200.

[0090] The specific assembly method of the cast iron reinforcement 200 is as follows: insert one end of the cylindrical rod with a threaded hole into the corresponding recessed hole of the reinforcement connection surface 211, and then install the hexagon socket screw at the countersunk hole on the back of the reinforcement connection surface 211, so as to assemble the first cast iron reinforcement 210 and the cylindrical rod into one.

[0091] The opening of the groove 221 is conducive to integrating the cylindrical rod and the cast aluminum shell 100, thereby enhancing the strength of the corresponding parts of the cast aluminum shell 100 of the main reducer. At the same time, it avoids relative movement between the cylindrical rod and the cast aluminum shell 100 during operation, thereby avoiding failure.

[0092] In some embodiments, cast iron reinforcement ribs 215 are provided on the reinforcement connection surface 211;

[0093] The cast iron reinforcement rib 215 extends along the radial direction of the reinforcement opening 212 and is located outside the reinforcement opening 212 .

[0094] Specifically, cast iron reinforcement ribs 215 are provided on the reinforcement portion connection surface 211 along the direction of the line connecting the axis of the annular wall 213 and the axis of the cylindrical rod.

[0095] For example, the number of the cast iron reinforcement ribs 215 may be multiple, such as 4. Preferably, the number of the cast iron reinforcement ribs 215 is consistent with the number of the second cast iron reinforcement parts 220, and they are matched one by one to improve the rigidity of the cast iron reinforcement 200.

[0096] In some embodiments, the cast iron reinforcement 200 and the cast aluminum housing 100 are fixedly connected by low pressure casting.

[0097] Figure 5 The schematic diagram of the structure of the sand core composite provided in the embodiment of the present application is as follows: Figure 5 As shown, the sand core 300 is a mold core used in casting and forging processes, and the cast iron reinforcement 200 is cast using the sand core 300 .

[0098] The aluminum-iron alloy casting method is adopted, and the traditional alloy molding concept is abandoned in terms of materials. Fixed connection is achieved through low-pressure casting, good shrinkage compensation, dense casting structure, good casting formability, and the metal liquid fills the mold under pressure, which can improve the fluidity of the metal liquid and is conducive to forming castings with clear contours and smooth surfaces.

[0099] In some embodiments, a material escape opening 216 is provided on the reinforcing portion connecting surface 211 , so that the aluminum liquid can be filled into the material escape opening 216 during the low-pressure casting process.

[0100] Exemplarily, the reinforcement portion connecting surface 211 may be provided with various shapes of the escape openings 216 , such as polygonal, circular, etc.

[0101] Exemplarily, one or more escape openings 216 , such as three, may be provided on the reinforcing portion connecting surface 211 .

[0102] The escape opening 216 is a through hole. The setting of the escape opening 216 is conducive to the aluminum liquid wrapping and filling the reinforcement connection surface 211 during casting, and is also conducive to integrating the cast iron reinforcement 200 and the cast aluminum shell 100 into one. At the same time, it avoids relative movement between the cylindrical rod and the cast aluminum shell 100 during operation, thereby avoiding failure.

[0103] In some embodiments, there are multiple escape openings 216, and an escape ring 217 is provided on the reinforcement portion connecting surface 211, and the escape ring 217 is arranged on a side away from the second cast iron reinforcement portion 220;

[0104] The escape ring 217 is used to connect the multiple escape openings 216 so that the aluminum liquid can be filled into all the escape openings 216 during the low-pressure casting process.

[0105] Specifically, an escape opening 216 is provided at a local position of the reinforcement connection surface 211, and the escape opening 216 is a through hole. An escape ring 217 is provided on the side of the reinforcement connection surface 211 away from the second cast iron reinforcement 220, and the escape ring 217 connects multiple escape openings 216 so that the aluminum liquid can be filled into all the escape openings 216 during casting, which is conducive to integrating the cast iron reinforcement 200 with the cast aluminum shell 100.

[0106] Figure 6 The structure of the main reducer housing assembly provided in the embodiment of the present application is schematically shown in FIG. Figure 2 . Figure 6 exist Figure 1 Based on this, the structure inside the accommodating cavity of the main reducer housing assembly is demonstrated.

[0107] In some embodiments, the cast aluminum housing 100 includes a first mounting surface 120 and a second mounting surface 130 , wherein the first mounting surface 120 is a surface where the accommodating cavity 110 is located, and the second mounting surface 130 is a surface away from the accommodating cavity 110 ;

[0108] The cast aluminum shell 100 further includes at least one transverse reinforcing rib 140 , at least one vertical reinforcing rib 150 , and at least one local reinforcing rib 160 ;

[0109] The transverse reinforcement ribs 140 and the vertical reinforcement ribs 150 are fixedly disposed on the second mounting surface 130;

[0110] Local reinforcement ribs 160 are disposed on the first mounting surface 120 to enhance the rigidity of the cast aluminum housing 100 .

[0111] Specifically, the second mounting surface 130 of the cast aluminum shell 100, i.e., the outer side of the cast aluminum shell 100, is provided with a plurality of criss-crossing reinforcing ribs, and the first mounting surface 120 of the cast aluminum shell 100, i.e., the inner side of the cast aluminum shell 100, is provided with local reinforcing ribs 160, and the number of reinforcing ribs can be selected according to actual needs.

[0112] In one example, if Figure 2 As shown, there are 4 transverse reinforcing ribs 140 and 4 vertical reinforcing ribs 150. The provision of the reinforcing ribs enhances the structural rigidity of the cast aluminum shell 100 and provides a flow channel for aluminum liquid during pouring, so that the mold cavity is filled faster.

[0113] In one example, if Figure 6 As shown, a local reinforcing rib 160 is provided in the accommodating cavity 110 of the cast aluminum housing 100 to increase the rigidity of the cast aluminum housing 100 .

[0114] In some embodiments, the cast aluminum housing 100 further includes a mounting body structure 170 and at least one body reinforcement rib 180;

[0115] The first end of the mounting main structure 170 is disposed on the first mounting surface 120 , and the second end of the mounting main structure 170 is disposed on the second mounting surface 130 ;

[0116] The main body reinforcement rib 180 is disposed on the second mounting surface 130 and is fixedly connected to the first end of the mounting main structure 170 to enhance the rigidity of the cast aluminum housing 100 .

[0117] Specifically, the number of the main body reinforcement ribs 180 can be selected according to actual needs, such as 4. The provision of the reinforcement ribs enhances the structural rigidity of the cast aluminum housing 100 and provides a flow channel for the aluminum liquid during pouring, so that the mold cavity is filled faster.

[0118] In one example, the main mounting structure 170 is provided with an upper end face axial assembly surface 171, and symmetrically distributed upper end cover mounting threaded holes, and the number of upper end cover mounting threaded holes can be multiple, such as 7. The main mounting structure 170 is also provided with an oil nozzle mounting threaded hole 172, which serves as a channel for injecting and replacing lubricating oil into the cast aluminum housing 100.

[0119] In one example, the mounting main structure 170 is also provided with a main reduction gear stud mounting surface 173 and a corresponding main reduction gear stud through hole 174. For example, the main reduction gear stud mounting surface 173 and the corresponding main reduction gear stud through hole 174 are distributed in a circular array, totaling 12, and the other side thereof corresponds to the main reduction gear and the housing assembly surface.

[0120] In one example, the cast aluminum housing 100 further includes a semicircular lower bearing mounting structure 190, with one lower bearing mounting structure 190 disposed on each of the left and right sides, for a total of two. To facilitate assembly, a lower bearing mounting surface 191 is machined on the lower surface of the lower bearing mounting structure 190, which is convenient for assembly with another semicircular lower bearing mounting structure 190 made of steel, and is fastened together by the engagement of the fastening bolts with the threaded holes of the lower bearing semiring mounting.

[0121] The embodiment of the present application provides an integrated multifunctional commercial vehicle main reducer housing assembly with strong load-bearing capacity and high lightness, which has a compact structure, high integration and light weight. On the basis of ensuring that the operating conditions are met, the overall structure is made lighter and disassembly is more convenient and quicker.

[0122] So far, the technical solutions of the embodiments of the present application have been described in conjunction with the preferred implementation modes shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific implementation modes. The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A main reducer housing assembly, It is characterized in that include: A cast aluminum housing (100) comprises a receiving cavity (110), wherein the receiving cavity (110) is at least used for installing a main reducer; At least one cast iron reinforcement (200) is disposed in the accommodating cavity (110) and is fixedly connected to the cast aluminum shell (100) to enhance the rigidity of the cast aluminum shell (100).

2. The main reducer housing assembly according to claim 1, It is characterized in that The cast iron reinforcement (200) comprises a first cast iron reinforcement portion (210) and at least one second cast iron reinforcement portion (220); The second cast iron reinforcement portion (220) is perpendicular to the plane where the first cast iron reinforcement portion (210) is located; The second cast iron reinforcement part (220) is used to fix the cast iron reinforcement (200) to the cast aluminum shell 100; The first cast iron reinforcement part (210) comprises a reinforcement part connection surface (211) and a reinforcement part opening (212); The reinforcement portion connection surface (211) is fixedly connected to the at least one second cast iron reinforcement portion (220), and the reinforcement portion opening (212) is used to install the bearing of the main reducer.

3. The main reducer housing assembly according to claim 2, It is characterized in that An annular wall (213) is provided at the reinforcement opening (212), the annular wall (213) and the reinforcement opening (212) are coaxially arranged, and the annular wall (213) and the second cast iron reinforcement (220) are arranged on the same side of the reinforcement connection surface (211); The inner diameter of the annular wall (213) is greater than the diameter of the reinforcing portion opening (212), so that a supporting wall (214) is formed between the annular wall (213) and the reinforcing portion opening (212).

4. The main reducer housing assembly according to claim 3, It is characterized in that The second cast iron reinforcement part (220) is a cylindrical rod; At least one groove (221) is arranged in the axial direction of the cylindrical rod.

5. The main reducer housing assembly according to claim 4, It is characterized in that A cast iron reinforcing rib (215) is provided on the reinforcing portion connecting surface (211); The cast iron reinforcement rib (215) extends along the radial direction of the reinforcement portion opening (212) and is located outside the reinforcement portion opening (212).

6. The main reducer housing assembly according to any one of claims 2 to 5, It is characterized in that The cast iron reinforcement (200) and the cast aluminum shell (100) are fixedly connected by a low-pressure casting molding method.

7. The main reducer housing assembly according to claim 6, It is characterized in that The reinforcing portion connecting surface (211) is provided with a material escape opening (216) so that aluminum liquid can be filled into the material escape opening (216) during the low-pressure casting process.

8. The final reducer housing assembly according to claim 7, It is characterized in that There are a plurality of escape openings (216), and an escape ring (217) is provided on the reinforcement portion connection surface (211), and the escape ring (217) is arranged on a side away from the second cast iron reinforcement portion (220); The escape ring (217) is used to connect the plurality of escape openings (216) so as to fill all the escape openings (216) with molten aluminum during the low-pressure casting process.

9. The main reducer housing assembly according to any one of claims 2 to 5, It is characterized in that The cast aluminum housing (100) comprises a first mounting surface (120) and a second mounting surface (130), wherein the first mounting surface (120) is a surface where the accommodating cavity (110) is located, and the second mounting surface (130) is a surface facing away from the accommodating cavity (110); The cast aluminum shell 100 further includes at least one transverse reinforcing rib (140), at least one vertical reinforcing rib (150) and at least one local reinforcing rib (160); The transverse reinforcing ribs (140) and the vertical reinforcing ribs (150) are fixedly arranged on the second mounting surface (130); The local reinforcement ribs (160) are arranged on the first mounting surface (120) to enhance the rigidity of the cast aluminum housing (100).

10. The final reducer housing assembly according to claim 9, It is characterized in that The cast aluminum housing (100) further comprises a mounting body structure (170) and at least one body reinforcing rib (180); The first end of the main mounting structure (170) is arranged on the first mounting surface (120), and the second end of the main mounting structure (170) is arranged on the second mounting surface (130); The main body reinforcing rib (180) is arranged on the second mounting surface (130) and is fixedly connected to the first end of the mounting main body structure (170) to enhance the rigidity of the cast aluminum housing (100).

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