Matching connection structure of planetary reduction gearbox

Abstract

The utility model relates to a matched connection structure of a planetary reduction gearbox. The technical problems that when an existing inner gear ring and a four-stage outlet are fixed, tooth-shaped matching connection is adopted, assembly is difficult, and the structural strength is weak are solved. Comprising a reduction gearbox body arranged at one end of a motor body and provided with a planetary gear set, an inner gear ring is arranged at the end, away from the motor body, of the reduction gearbox body and connected with a four-stage outlet seat, and an output shaft connected with the planetary gear set is rotationally arranged in the four-stage outlet seat; and one end of the fourth-stage outlet seat is inserted into the circumferential inner side of one end of the inner gear ring, and the fourth-stage outlet seat is connected with the inner gear ring through a concave-convex insertion positioning assembly. The four-stage outlet seat has the advantages that the positioning groove of the inner gear ring is matched with the positioning part of the four-stage outlet seat, and the four concave-convex insertion positioning assemblies which are uniformly distributed are adopted, so that the overall strength of the reduction gearbox is better, and the use requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of reduction gear box equipment, and in particular relates to a matching connection structure of a planetary reduction gear box. Background Art

[0002] Planetary reducers offer advantages such as compact structure, high power transmission, and high load capacity. They are used to adjust transmission speeds and must be connected to the motor during assembly. The ring gear is a crucial component of the planetary reducer, providing the orbital path for the planetary gears within the reducer. Existing systems use a toothed connection to secure the ring gear to the fourth-stage outlet, resulting in a complex structure that increases assembly difficulty and weakens the structure. Summary of the Invention

[0003] The purpose of the utility model is to provide a matching connection structure of a planetary reduction box in view of the above problems.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a mating connection structure for a planetary reduction gearbox, comprising a reduction gearbox body disposed at one end of a motor body and having a planetary gear set, the reduction gearbox body having an inner ring gear at the end away from the motor body, the inner ring gear being connected to a four-stage outlet seat, and an output shaft connected to the planetary gear set being rotatably provided within the four-stage outlet seat, one end of the four-stage outlet seat being plugged into the circumferential inner side of one end of the inner ring gear, and the four-stage outlet seat and the inner ring gear being connected via a concave-convex plug-in positioning assembly. The four-stage outlet seat is connected to the inner ring gear via the concave-convex plug-in positioning assembly, which serves both as a connection and a circumferential limiter, thereby increasing the strength of the overall structure.

[0005] In the aforementioned planetary reduction gearbox coupling structure, the fourth-stage outlet seat has an annular protrusion on one end surface near the inner gear ring, coaxially arranged with the fourth-stage outlet seat. The annular protrusion is inserted into the inner gear ring's circumferential interior. The annular protrusion of the fourth-stage outlet seat is installed within the inner gear ring, providing a preliminary connection.

[0006] In the above-mentioned mating connection structure of a planetary reducer, the center of the fourth-stage outlet seat has an output hole for the output shaft to pass through, and one end of the output hole extends into an annular convex ring located on the circumferential inner side of the annular convex portion, and the annular convex ring does not exceed the end of the annular convex portion.

[0007] In the aforementioned planetary reduction gearbox coupling structure, a plurality of connecting ribs are provided between the annular bead and the annular protrusion, and the annular bead, the annular protrusion, and the connecting ribs are integrally formed on the fourth-stage outlet seat. The connecting ribs serve to strengthen the connection between the annular bead and the annular protrusion.

[0008] In the aforementioned planetary reduction gearbox coupling structure, the concave-convex plug-in positioning assembly includes a plurality of positioning grooves disposed on the end surface of the inner gear ring near the fourth-stage outlet seat. The end surface of the fourth-stage outlet seat near the inner gear ring is provided with a plurality of positioning protrusions located circumferentially outward of an annular protrusion. The positioning protrusions correspond to the positioning grooves one by one and are pluggably connected to each other. The positioning protrusions of the fourth-stage outlet seat are connected to the positioning grooves of the inner gear ring. The positioning protrusions and the positioning grooves not only provide a connection but also prevent circumferential rotation between the fourth-stage outlet seat and the inner gear ring.

[0009] In the aforementioned planetary reduction gearbox coupling structure, the four positioning protrusions are evenly distributed around the circumference. The positioning protrusions are integrally connected to the annular protrusion, and the outer sides of the positioning protrusions do not extend beyond the outer side of the fourth-stage outlet seat. The four positioning protrusions further enhance the stability of the connection between the fourth-stage outlet seat and the inner ring gear.

[0010] In the aforementioned planetary reduction gearbox coupling structure, a retaining ring groove is circumferentially defined at one end of the output shaft proximal to the fourth-stage outlet seat. A retaining ring member is disposed within the retaining ring groove, with one side of the retaining ring member abutting against an end face of the fourth-stage outlet seat distal to the inner gear ring. The retaining ring member serves to constrain the fourth-stage outlet seat, preventing separation from the inner gear ring, which could affect normal operation.

[0011] In the above-mentioned matching connection structure of a planetary reducer, the motor body is provided with a case connector at one end close to the reducer body, and the reducer body is provided with a motor connector corresponding to the case connector at one end close to the motor body, and the case connector and the motor connector are connected through a connecting assembly.

[0012] In the above-mentioned mating connection structure of a planetary reducer, the connection assembly includes a plurality of plug-in slots circumferentially arranged at one end of the box connector close to the motor connector, and the motor connector is provided with a plurality of plug-in blocks corresponding to the plug-in slots at one end close to the box connector, and the plug-in blocks are axially arranged in the plug-in slots.

[0013] In the above-mentioned matching connection structure of a planetary reduction gearbox, the box body connector is provided with an annular limiting portion on the inner side of one end close to the plug-in slot, and the motor connector is provided with several arc-shaped limiting portions corresponding to the annular limiting portion on the inner side of one end close to the plug-in block.

[0014] Compared with the existing technology, the advantages of this utility model are:

[0015] 1. The positioning groove of the inner gear ring of the device matches the positioning part of the four-stage outlet seat, and adopts four evenly distributed concave and convex plug-in positioning components to make the overall strength of the reduction gearbox better, thereby meeting the use requirements.

[0016] 2. The reduction gear box of the device is connected to the box connector of the motor body through the motor connector. The connection component is used to stabilize the connection between the reduction gear box and the motor body, thereby enhancing the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural explosion diagram of the utility model.

[0019] Figure 3 It is a structural diagram of the four-stage outlet seat in the utility model.

[0020] Figure 4 It is a structural diagram of the inner gear ring in the utility model.

[0021] Figure 5 It is a structural diagram of the box connecting piece in the utility model.

[0022] Figure 6 It is a structural diagram of the motor connecting piece in the utility model.

[0023] In the figure: motor body 1, reduction gear box body 2, inner gear ring 3, fourth-stage outlet seat 4, output shaft 41, annular convex portion 42, output hole 43, annular convex ring 44, connecting rib 45, limiting ring groove 46, limiting ring member 47, concave-convex plug-in positioning component 5, positioning groove 51, positioning convex portion 52, box body connector 6, annular limiting portion 61, motor connector 7, arc-shaped limiting portion 71, connecting component 8, plug-in groove 81, plug-in block 82. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] like Figure 1-6 As shown, a mating connection structure of a planetary reduction gearbox includes a reduction gearbox body 2 disposed at one end of a motor body 1 and having a planetary gear set. The reduction gearbox body 2 has an inner ring gear 3 at the end away from the motor body 1. The inner ring gear 3 is connected to a fourth-stage outlet seat 4, and an output shaft 41 connected to the planetary gear set is rotatably provided in the fourth-stage outlet seat 4. One end of the fourth-stage outlet seat 4 is plugged into the circumferential inner side of one end of the inner ring gear 3, and the fourth-stage outlet seat 4 and the inner ring gear 3 are connected by a concave-convex plug-in positioning assembly 5. The fourth-stage outlet seat 4 is connected to the inner ring gear 3 via the concave-convex plug-in positioning assembly 5. The concave-convex plug-in positioning assembly 5 serves both as a connection and a circumferential limit, thereby improving the strength of the overall structure.

[0026] like Figure 3As shown, the end surface of the fourth-stage outlet seat 4 near the inner gear ring 3 has an annular protrusion 42 arranged coaxially with the fourth-stage outlet seat 4. The annular protrusion 42 is inserted into the circumferential inner side of the inner gear ring 3. The annular protrusion 42 of the fourth-stage outlet seat 4 is installed in the inner gear ring 3, playing the role of preliminary connection.

[0027] The center of the fourth-stage outlet seat 4 has an output hole 43 for the output shaft 41 to pass through, and one end of the output hole 43 extends into an annular bead 44 located on the circumferential inner side of the annular convex portion 42, and the annular bead 44 does not exceed the end of the annular convex portion 42.

[0028] Specifically, a plurality of connecting ribs 45 are provided between the annular bead 44 and the annular protrusion 42, and the annular bead 44, the annular protrusion 42 and the connecting ribs 45 are all integrally formed on the fourth-stage outlet seat 4. The connecting ribs 45 are used to strengthen the connection strength between the annular bead 44 and the annular protrusion 42.

[0029] Combine Figure 1 、 Figure 3 and Figure 4 As shown, the concave-convex plug-in positioning assembly 5 includes a plurality of positioning grooves 51 provided on the end surface of the inner gear ring 3 near the fourth-stage outlet seat 4. The end surface of the fourth-stage outlet seat 4 near the inner gear ring 3 is provided with a plurality of positioning protrusions 52 located circumferentially outward of the annular protrusion 42. The positioning protrusions 52 correspond one-to-one with the positioning grooves 51 and are plugged into each other. The positioning protrusions 52 of the fourth-stage outlet seat 4 are connected to the positioning grooves 51 of the inner gear ring 3. The positioning protrusions 52 and the positioning grooves 51 not only serve as a connection, but also prevent the fourth-stage outlet seat 4 and the inner gear ring 3 from rotating circumferentially.

[0030] There are four positioning protrusions 52 evenly distributed around the circumference. These protrusions 52 are integrally connected to the annular protrusion 42, and their outer sides do not extend beyond the outer side of the fourth-stage outlet seat 4. The four positioning protrusions 52 further enhance the stability of the connection between the fourth-stage outlet seat 4 and the inner gear ring 3.

[0031] like Figure 2 As shown, a retaining ring groove 46 is circumferentially defined at one end of the output shaft 41 near the fourth-stage outlet seat 4. A retaining ring 47 is disposed within retaining ring groove 46. One side of retaining ring 47 abuts against the end face of the fourth-stage outlet seat 4 facing away from the inner gear ring 3. Retaining ring 47 is used to constrain the fourth-stage outlet seat 4, preventing separation between the fourth-stage outlet seat 4 and the inner gear ring 3, which could affect normal operation.

[0032] like Figure 1 As shown, the motor body 1 is provided with a box connector 6 at one end close to the reduction box body 2, and the reduction box body 2 is provided with a motor connector 7 corresponding to the box connector 6 at one end close to the motor body 1, and the box connector 6 and the motor connector 7 are connected by a connecting assembly 8.

[0033] Combine Figure 5 and Figure 6 As shown, the connecting assembly 8 includes a plurality of plug-in slots 81 circumferentially arranged on one end of the box connector 6 close to the motor connector 7, and a plurality of plug-in blocks 82 corresponding to the plug-in slots 81 are provided on one end of the motor connector 7 close to the box connector 6, and the plug-in blocks 82 are axially arranged in the plug-in slots 81.

[0034] Among them, the box body connector 6 is provided with an annular limiting portion 61 on the inner side of one end close to the plug-in slot 81 , and the motor connector 7 is provided with several arc-shaped limiting portions 71 corresponding to the annular limiting portion 61 on the inner side of one end close to the plug-in block 82 .

[0035] The principle of this embodiment is:

[0036] The case connector 6 of the motor body 1 corresponds to the motor connector 7 of the reduction gear box 2, the plug-in block 82 of the motor connector 7 is connected to the plug-in groove 81 of the case connector 6, the reduction gear box 2 is connected to the inner ring gear 3, the annular protrusion 42 of the fourth-stage outlet seat 4 is arranged on the inner side of the inner ring gear 3, and the positioning protrusion 52 of the fourth-stage outlet seat 4 is connected to the positioning groove 51 of the inner ring gear 3.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0038] Although this document frequently uses terms such as motor body 1, reduction gear box body 2, inner gear ring 3, fourth-stage outlet seat 4, output shaft 41, annular protrusion 42, output hole 43, annular protrusion 44, connecting rib 45, limiting ring groove 46, limiting ring member 47, concave-convex plug-in positioning assembly 5, positioning groove 51, positioning protrusion 52, housing connector 6, annular limiting portion 61, motor connector 7, arc-shaped limiting portion 71, connecting assembly 8, plug-in groove 81, plug-in block 82, etc., the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A planetary reduction gearbox coupling connection structure, comprising a reduction gearbox body (2) provided at one end of a motor body (1) and having a planetary gear set, wherein the reduction gearbox body (2) has an inner gear ring (3) at one end away from the motor body (1), the inner gear ring (3) is connected to a fourth-stage outlet seat (4), and an output shaft (41) connected to the planetary gear set is rotatably provided in the fourth-stage outlet seat (4), characterized in that: One end of the four-stage outlet seat (4) is plugged into the circumferential inner side of one end of the inner gear ring (3), and the four-stage outlet seat (4) and the inner gear ring (3) are connected via a concave-convex plug-in positioning component (5).

2. The matching connection structure of a planetary reduction gearbox according to claim 1, characterized in that: The end surface of the fourth-stage outlet seat (4) close to the inner gear ring (3) has an annular convex portion (42) coaxially arranged with the fourth-stage outlet seat (4), and the annular convex portion (42) is inserted into the circumferential inner side of the inner gear ring (3).

3. The matching connection structure of a planetary reduction gearbox according to claim 2, characterized in that: The center of the four-stage outlet seat (4) has an output hole (43) for the output shaft (41) to pass through, and one end of the output hole (43) extends into an annular bead (44) located on the circumferential inner side of the annular convex portion (42), and the annular bead (44) does not exceed the end of the annular convex portion (42).

4. The matching connection structure of a planetary reduction gearbox according to claim 3, characterized in that: A plurality of connecting ribs (45) are provided between the annular convex ring (44) and the annular convex portion (42), and the annular convex ring (44), the annular convex portion (42) and the connecting ribs (45) are all integrally formed on the fourth-stage outlet seat (4).

5. The matching connection structure of a planetary reduction gearbox according to claim 2, 3 or 4, characterized in that: The concave-convex plug-in positioning assembly (5) includes a plurality of positioning grooves (51) provided on an end surface of the inner gear ring (3) close to the fourth-stage outlet seat (4), and the fourth-stage outlet seat (4) is provided with a plurality of positioning protrusions (52) located circumferentially outside the annular protrusion (42) on an end surface close to the inner gear ring (3). The positioning protrusions (52) correspond to the positioning grooves (51) one by one and are plugged in and connected to each other.

6. The matching connection structure of a planetary reduction gearbox according to claim 5, characterized in that: The number of the positioning protrusions (52) is four and they are evenly distributed in the circumferential direction. The positioning protrusions (52) are connected to the annular protrusion (42) as a whole and the outer side of the positioning protrusions (52) does not exceed the outer side of the fourth-stage outlet seat (4).

7. The matching connection structure of a planetary reduction gearbox according to claim 1, characterized in that: A limiting ring groove (46) is provided in the circumference of one end of the output shaft (41) close to the fourth-stage outlet seat (4), a limiting ring member (47) is provided in the limiting ring groove (46), and one side of the limiting ring member (47) abuts against an end face of the fourth-stage outlet seat (4) away from the inner gear ring (3).

8. The matching connection structure of a planetary reduction gearbox according to claim 1, characterized in that: The motor body (1) is provided with a housing connector (6) at one end close to the reduction gear box (2), and the reduction gear box (2) is provided with a motor connector (7) corresponding to the housing connector (6) at one end close to the motor body (1), and the housing connector (6) and the motor connector (7) are connected via a connecting assembly (8).

9. The matching connection structure of a planetary reduction gearbox according to claim 8, characterized in that: The connecting assembly (8) includes a plurality of plug-in slots (81) circumferentially arranged at one end of the box connecting member (6) close to the motor connecting member (7), and a plurality of plug-in blocks (82) corresponding to the plug-in slots (81) are provided at one end of the motor connecting member (7) close to the box connecting member (6), and the plug-in blocks (82) are axially arranged in the plug-in slots (81).

10. The matching connection structure of a planetary reduction gearbox according to claim 9, characterized in that: The box connecting piece (6) is provided with an annular limiting portion (61) on the inner side of one end close to the plug-in slot (81), and the motor connecting piece (7) is provided with a plurality of arc-shaped limiting portions (71) corresponding to the annular limiting portion (61) on the inner side of one end close to the plug-in block (82).

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