End cover and gear ring integrated speed reducer structure

Abstract

The utility model relates to the technical field of speed reducer connecting structures, in particular to an end cover and gear ring integrated speed reducer structure which comprises an end cover portion and a gear ring portion, the end cover portion is poured at one end of the gear ring portion and comprises an aluminum end cover, and the gear ring portion comprises a steel gear ring. During machining, molten aluminum can enter the connecting groove and the annular groove through the pouring through holes, the molten aluminum is rapidly cooled to be in a solid state to obtain an aluminum material in a needed shape, the aluminum material wraps the outer surface of the steel gear ring and is further connected with the inner surface of the steel gear ring, and therefore the aluminum material is not prone to falling off. The connection strength is higher, connection is more stable, particularly the axial force bearing capacity is greatly improved, the aluminum end cover is suitable for various installation sizes, the annular grooves are formed in the inner side of the connection groove and used for increasing the contact area between molten aluminum and the steel gear ring, namely, the contact area between the aluminum end cover and the steel gear ring is increased, and the integrity and the sealing performance are higher after the aluminum end cover and the steel gear ring are poured.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer connection structures, in particular to an end cover and gear ring integral reducer structure. Background Art

[0002] The reducer end cover and gear ring currently produced are separate. Screws are needed to connect the gear ring and the output end cover during assembly. Some products have large output torque, so press-fit pins or assemble more screws to increase the connection strength. The reducer end cover and gear ring are assembled separately, and the gap between the end cover and the gear ring cannot be avoided. It is necessary to install an "O"-shaped sealing ring to achieve the sealing effect. In the assembly process, the three processes of assembling screws, drilling pin holes, and press-fitting pins are the weak processes. The step of assembling screws requires a skilled worker to meet the daily shipment volume. Drilling pin holes requires the use of an additional drilling machine, and due to the limitation of the drilling efficiency of the equipment, the efficiency that can be improved by this step is limited. At the same time, it has high requirements for operators. The press-fit pins need to be pre-installed manually with a hammer, and then press-fitted with a pneumatic press. The labor intensity of the operator is high. For this reason, some patents began to design the end cover and the gear ring as one.

[0003] For example, the patent with authorization announcement number CN215567829U discloses an integrated planetary gear reducer for a planetary reduction motor, in which the end cover and the planetary gear reducer in the prior art are die-cast into an integrated component, thereby reducing the number of parts, reducing the processing and assembly workload, improving production efficiency, reducing production costs, and improving waterproof performance. However, there are still certain shortcomings.

[0004] The above patent relies on annular grooves to increase the axial force bearing capacity of the end cover and the gear ring as a whole. The structure is relatively simple, and the axial force bearing capacity is limited. In addition, in the overlapping section after die-casting, the end cover is wrapped around the outside of the gear ring, which increases the installation diameter of the gear ring, that is, the required installation space increases. Utility Model Content

[0005] In response to the above problems, the present application provides an end cover and gear ring integral reducer structure to solve the problem that the above patent relies on annular grooves to increase the axial force bearing capacity of the end cover and gear ring as a whole, the structure is relatively simple, the improvement of axial force bearing capacity is limited, and in the overlapping section after die-casting, the end cover is wrapped around the outside of the gear ring, which increases the installation diameter of the gear ring, that is, the required installation space increases.

[0006] The technical solution of the utility model is: an end cover and gear ring integral reducer structure, comprising an end cover part and a gear ring part, the end cover part is cast at one end of the gear ring part, the gear ring part is provided with an inwardly arranged connecting part, the connecting part and the end cover part are cast and formed, and an integral cylindrical surface is formed on the outside of the connection between the end cover part and the gear ring part along the axial direction.

[0007] Furthermore, the end cover portion includes an aluminum end cover, and the gear ring portion includes a steel gear ring. A connecting groove is provided on the outer side of one end of the steel gear ring close to the aluminum end cover, and a casting through hole is provided on the inner side of the connecting groove. The end cover portion and the connecting groove are connected by casting.

[0008] Furthermore, the aluminum end cover wraps around the outer surface of the steel gear ring and is connected to the inner surface of the steel gear ring.

[0009] Furthermore, a radially inward step is provided at the outer side where the steel gear ring is connected to the aluminum end cover.

[0010] Furthermore, the inner side where the steel gear ring is connected to the aluminum end cover is provided with an outward step in the radial direction.

[0011] Furthermore, the step forms an integral cylindrical surface at the outer side of the connection between the step and the aluminum end cover.

[0012] Furthermore, a bearing hole is provided through the middle of the aluminum end cover.

[0013] Furthermore, a retaining ring groove is provided on the inner side of the bearing hole.

[0014] Furthermore, the aluminum end cover has two mounting holes symmetrically extending through the end cover near the edge.

[0015] Furthermore, a plurality of screw holes are formed through one end of the steel gear ring away from the aluminum end cover.

[0016] Furthermore, a plurality of annular grooves are provided inside the connecting groove, and the end cover portion is connected to the annular grooves by casting.

[0017] The beneficial effects of the utility model are as follows:

[0018] (1) The utility model describes an end cover and gear ring integral reducer structure. The staff assembles the steel gear ring and the mold to obtain the required cavity, and injects aluminum liquid into the mold. The aluminum liquid can enter the connecting groove and the annular groove through the casting through hole. The aluminum liquid is quickly cooled to a solid state to obtain an aluminum material of the required shape. The aluminum material not only wraps the outer surface of the steel gear ring but is also connected to the inner surface of the steel gear ring. The connection strength is higher and the connection is more stable. In particular, the axial force bearing capacity is greatly enhanced and is suitable for a variety of installation sizes. A plurality of annular grooves are provided on the inner side of the connecting groove to increase the contact area between the aluminum liquid and the steel gear ring, that is, to increase the contact area between the aluminum end cover and the steel gear ring, so that the integrity of the two after casting is stronger and the sealing is better. The outer diameter of the end of the aluminum end cover close to the steel gear ring after casting is the same as the outer diameter of the steel gear ring, which will not increase the space required for the installation of the steel gear ring.

[0019] (2) The utility model describes an end cover and gear ring integral reducer structure, wherein the integral end cover is made of two materials, wherein the end cover portion is made of aluminum and the gear ring portion is made of steel, and the surface of the gear ring portion is spray-coated to ensure the corrosion resistance of the integral end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of an end cover and gear ring integrated reducer structure provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of a first embodiment of an end cover and gear ring integral reducer structure provided by the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of a second embodiment of an end cover and gear ring integral reducer structure provided by the utility model;

[0024] Figure 4 for Figure 3 A magnified image of point A;

[0025] Figure 5 The utility model provides a schematic diagram of the gear ring structure of an end cover and gear ring integral reducer structure.

[0026] In the figure: 1, end cover; 11, bearing hole; 12, retaining ring groove; 13, aluminum end cover; 14, mounting hole; 2, gear ring; 21, steel gear ring; 22, casting through hole; 23, screw hole; 24, connecting groove; 25, annular groove. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0028] Embodiment 1:

[0029] like Figure 1-Figure 5As shown, the embodiment of the utility model provides an end cover and gear ring integral reducer structure, including an end cover part 1 and a gear ring part 2, the end cover part 1 is cast at one end of the gear ring part 2, the gear ring part 2 is provided with a connecting part arranged inwardly, the connecting part and the end cover part 1 are cast and formed, and the outer part of the connection between the end cover part 1 and the gear ring part 2 forms an integral cylindrical surface along the axial direction; the end cover part 1 includes an aluminum end cover 13, the gear ring part 2 includes a steel gear ring 21, and the outer side of the steel gear ring 21 near the aluminum end cover 13 is provided with a connecting part A connecting groove 24 is provided with a casting through hole 22 on the inner side thereof, and the end cover 1 is connected to the connecting groove 24 by casting; the aluminum end cover 13 wraps the outer surface of the steel gear ring 21 and is connected to the inner surface of the steel gear ring 21; a radially inward step is provided at the outer side where the steel gear ring 21 is connected to the aluminum end cover 13; a radially outward step is provided at the inner side where the steel gear ring 21 is connected to the aluminum end cover 13; the step forms an integral cylindrical surface at the outer side of the connection between the step and the aluminum end cover 13.

[0030] Specifically, the integral end cover is made of two materials, wherein the end cover portion 1 is partially made of aluminum, and the gear ring portion 2 is partially made of steel. The surface of the gear ring portion 2 is sprayed with plastic to ensure the corrosion resistance of the integral end cover. The end cover portion 1 includes an aluminum end cover 13, and the gear ring portion 2 includes a steel gear ring 21. A connecting groove 24 is provided on the outer side of one end of the steel gear ring 21 close to the aluminum end cover 13, and a plurality of casting through holes 22 are penetrated through the inner side of the connecting groove 24. The aluminum liquid can enter the connecting groove 24 through the casting through holes 22, so that the aluminum liquid is wrapped around the inner and outer sides of the steel gear ring 21, so that the integrity is stronger after casting, and the axial force bearing capacity is stronger. The end cover portion 1 and the connecting groove 24 are connected by casting.

[0031] In this embodiment, the staff assembles the steel gear ring 21 with the mold to obtain the required cavity, and injects molten aluminum into the mold. The molten aluminum can enter the connecting groove 24 through the casting through hole 22. The molten aluminum is quickly cooled to a solid state to obtain an aluminum material of the required shape. The aluminum material not only wraps the outer surface of the steel gear ring 21 but is also connected to the inner surface of the steel gear ring 21. The connection strength is higher and the connection is more stable, especially the axial force bearing capacity is greatly enhanced, and it is suitable for a variety of installation sizes.

[0032] Specifically, a bearing hole 11 is formed through the middle of the aluminum end cover 13 , and a retaining ring groove 12 is formed inside the bearing hole 11 .

[0033] Specifically, the aluminum end cover 13 has two mounting holes 14 symmetrically formed therethrough near the edge.

[0034] In this embodiment, the utility model is connected to a planetary reduction motor, a retaining ring groove 12 is provided in the bearing hole 11, a mounting hole 14 is provided on the aluminum end cover 13, and the aluminum end cover 13 is connected to the planetary reduction motor by bolts.

[0035] Specifically, a plurality of screw holes 23 are formed through one end of the steel gear ring 21 away from the aluminum end cover 13 .

[0036] In this embodiment, the utility model is connected to the motor connection cover, and the outer end of the motor connection cover is matched and installed together with the end of the steel gear ring 21 away from the aluminum end cover 13, and then fixed with screws passing through the screw holes 23, and a sealing ring is provided on the connection cover to ensure the sealing performance of the assembly between the two.

[0037] Embodiment 2:

[0038] This embodiment is basically the same as the first embodiment, except that a plurality of annular grooves 25 are provided inside the connecting groove 24 to increase the contact area between the aluminum liquid and the steel gear ring 21, that is, to increase the contact area between the aluminum end cover 13 and the steel gear ring 21, so that the integrity of the two after casting is stronger and the sealing is better, and the end cover portion 1 and the annular groove 25 are connected by casting.

[0039] How it works:

[0040] The integral end cover is made of two materials, wherein the end cover portion 1 is made of aluminum, and the gear ring portion 2 is made of steel. The surface of the gear ring portion 2 is spray-coated to ensure the corrosion resistance of the integral end cover.

[0041] The staff assembles the steel gear ring 21 with the mold to obtain the required cavity, and injects molten aluminum into the mold. The molten aluminum can enter the connecting groove 24 and the annular groove 25 through the casting through hole 22. The molten aluminum is quickly cooled to a solid state to obtain an aluminum material of the required shape. The aluminum material not only wraps the outer surface of the steel gear ring 21 but is also connected to the inner surface of the steel gear ring 21. The connection strength is higher and the connection is more stable. In particular, the axial force bearing capacity is greatly enhanced, and it is suitable for a variety of installation sizes. The outer diameter of the end of the cast aluminum end cover 13 close to the steel gear ring 21 is the same as the outer diameter of the steel gear ring 21, and the space required for the installation of the steel gear ring 21 will not increase.

[0042] The utility model is connected with the motor connection cover, the outer end of the motor connection cover is matched and installed with the end of the steel gear ring 21 away from the aluminum end cover 13, and then fixed with screws passing through the screw holes 23, and a sealing ring is arranged on the connection cover to ensure the sealing performance of the assembly between the two.

[0043] The utility model is connected with a planetary reduction motor, a retaining ring groove 12 is arranged in a bearing hole 11, a mounting hole 14 is arranged on an aluminum end cover 13, and the aluminum end cover 13 is connected with the planetary reduction motor by bolts.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An end cover and gear ring integral type reducer structure, comprising an end cover portion (1) and a gear ring portion (2), wherein the end cover portion (1) is cast at one end of the gear ring portion (2), and is characterized in that: The gear ring part (2) is provided with an inwardly arranged connection part, the connection part and the end cover part (1) are cast and formed, and the connection part between the end cover part (1) and the gear ring part (2) forms an integral cylindrical surface along the axial direction.

2. The end cover and gear ring integral reducer structure according to claim 1, characterized in that: The end cover portion (1) comprises an aluminum end cover (13), and the gear ring portion (2) comprises a steel gear ring (21). A connection groove (24) is provided on the outer side of one end of the steel gear ring (21) close to the aluminum end cover (13), and a casting through hole (22) is provided through the inner side of the connection groove (24). The end cover portion (1) and the connection groove (24) are connected by casting.

3. The end cover and gear ring integral reducer structure according to claim 2, characterized in that: The aluminum end cover (13) wraps around the outer surface of the steel gear ring (21) and is connected to the inner surface of the steel gear ring (21).

4. The end cover and gear ring integral reducer structure according to claim 3, characterized in that: The outer side where the steel gear ring (21) is connected to the aluminum end cover (13) is provided with an inward step in the radial direction.

5. The end cover and gear ring integral reducer structure according to claim 4, characterized in that: The inner side where the steel gear ring (21) is connected to the aluminum end cover (13) is provided with outward steps along the radial direction.

6. The end cover and gear ring integral reducer structure according to claim 5, characterized in that: The step and the outer side of the connection point of the aluminum end cover (13) form an integral cylindrical surface.

7. The end cover and gear ring integral reducer structure according to claim 6, characterized in that: A bearing hole (11) is formed through the middle of the aluminum end cover (13).

8. The end cover and gear ring integral reducer structure according to claim 7, characterized in that: A retaining ring groove (12) is provided inside the bearing hole (11).

9. The end cover and gear ring integral reducer structure according to claim 8, characterized in that: The aluminum end cover (13) has two mounting holes (14) symmetrically formed therethrough near the edge.

10. The end cover and gear ring integral reducer structure according to claim 9, characterized in that: A plurality of screw holes (23) are formed through one end of the steel gear ring (21) away from the aluminum end cover (13).

11. The end cover and gear ring integral reducer structure according to claim 10, characterized in that: A plurality of annular grooves (25) are provided inside the connection groove (24), and the end cover (1) and the annular grooves (25) are connected by pouring.

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