Precise planetary reducer

Abstract

The utility model provides a precise planetary reducer which comprises an outer box body, the outer box body comprises an inner gear ring, an input end shell and an input flange, the inner gear ring, the input end shell and the input flange are sequentially connected, the inner gear ring is connected with the input end shell through a first screw, the input end shell is connected with the input flange through a second screw, and the input end shell is connected with the input flange through a third screw. The input end shell is provided with a first connecting block, the inner gear ring is provided with a first connecting groove, the input flange is provided with a second connecting block, the input end shell is provided with a second connecting groove, and when the input end shell is installed on the inner gear ring, a first connecting part of the first connecting block is sequentially screwed into a first abutting part through a first extending part of the first connecting groove; when the input flange is installed on the input end shell, the second connecting part of the second connecting block is screwed into the second abutting part through the second extending part of the second connecting groove in sequence. The overall installation structure is simple, and installation is rapid and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field especially relates to a precision planetary reducer. BACKGROUND

[0002] The precision planetary reducer is another name of the planetary reducer in the industry, and its main transmission structure is: planetary gear, sun gear and inner gear ring. Compared with other reducers, the precision planetary reducer has the characteristics of high rigidity, high precision (single stage can reach 1 minute or less), high transmission efficiency (single stage is 97%-98%), high torque / volume ratio and lifelong maintenance-free.

[0003] The outer box body of the precision planetary reducer on the market is composed of an input flange, an input end shell and an inner gear ring in sequence, and the input flange, the input end shell and the inner gear ring are connected by screws between adjacent ones, but the problem is that multiple screws are connected with each other, the installation is complicated, and when the equipment is used for a long time, the sealing performance between the parts of the outer box body is affected, the service life is affected, and when some screws are not tightened during equipment operation or installation process, abnormal noise is easily generated during equipment operation. UTILITY MODEL CONTENTS

[0004] The utility model provides a precision planetary reducer convenient to install and simple in structure.

[0005] The utility model provides the following technical scheme: a precision planetary reducer, comprising an outer box body, the outer box body comprises an inner gear ring, an input end shell and an input flange, the inner gear ring, the input end shell and the input flange are sequentially connected, the inner gear ring is connected with the input end shell through a first screw, the input end shell is connected with the input flange through a second screw, the end surface of the input end shell and the inner gear ring is equipped with a plurality of first connecting blocks, the inner gear ring is equipped with a first connecting groove matched with the first connecting block, the end surface of the input flange and the input end shell is equipped with a plurality of second connecting blocks, the input end shell is equipped with a second connecting groove matched with the second connecting block, the first connecting block comprises a first connecting part, the first connecting groove comprises a first extension part and a first abutting part, when the input end shell is installed on the inner gear ring, the first connecting part is screwed into the first abutting part through the first extension part;The second connecting block comprises a second abutting part, the second connecting groove comprises a second extension part and a second abutting part, when the input flange is installed on the input end shell, the second connecting part is screwed into the second abutting part through the second extension part.

[0006] Compared with the prior art, the utility model discloses the advantages are in: through the first connecting portion is through the first extension and is rotated into the first abutting portion, realizes the connection of inner tooth ring and input end shell, prevents the inner tooth ring and input end shell from producing the shaking in the equipment operation process through the wall surface of first connecting block and first connecting groove, and through the first screw fixed, because the inner tooth ring and input end shell are connected through first connecting block and first connecting groove, and the first screw plays the role of double fixed, and the sealing is better, and the equipment operation is more stable, and under the condition of guaranteeing the sealing, the first screw can reduce the quantity, and installation is more convenient, through the second connecting portion is through the second extension and is rotated into the second abutting portion, realizes the connection of input end shell and input flange, and through the second screw carries out double sealing, and the installation quantity of second screw is reduced simultaneously, and installation is more convenient.

[0007] In some embodiments, the first connecting portions are respectively symmetrically arranged on opposite sides of the first connecting block, and the second connecting portions are respectively symmetrically arranged on opposite sides of the second connecting block, through the improvement, the first connecting block increases the contact area with the first connecting groove, the second connecting block increases the contact area with the second connecting groove, enhances the bearing capacity of the first connecting block or the second connecting block, so that the equipment operation is more stable.

[0008] In some embodiments, the first connecting blocks are arranged at equal intervals around the center axis of the input end shell, and the second connecting blocks are arranged at equal intervals around the center axis of the input flange, through the improvement, when the inner tooth ring, the input end shell and the input flange have a relative movement tendency, the first connecting block abuts against the wall surface of the first connecting groove, and the second connecting block abuts against the wall surface of the second connecting groove, because they are arranged circumferentially around the center axis of the device, and abut at different angles, the equipment operation is more stable.

[0009] In some embodiments, the first abutting portion is provided with a first anti-skid pad, the first connecting block moves into the first abutting portion, the first connecting block abuts against the first anti-skid pad, the second abutting portion is provided with a second anti-skid pad, the second connecting block moves into the first abutting portion, the second connecting block abuts against the second anti-skid pad, through the improvement, the first anti-skid pad and the second anti-skid pad are arranged, to prevent the equipment from producing abnormal noise during operation, and also to enhance the abutting force of the first connecting block and the first abutting portion, and the abutting force of the second connecting block and the second abutting portion, to prevent the first connecting block from easily sliding out of the first abutting portion, and to prevent the second connecting block from easily sliding out of the second abutting portion.

[0010] In some embodiments, the inner gear ring is provided with a plurality of first fixing holes, the input end shell is provided with first positioning through holes matched with the first fixing holes, when the first connecting part is screwed into the first abutting part, the first positioning through holes are aligned with the first fixing holes, and the first screws are sequentially inserted into the first positioning through holes and the first fixing holes; the input end shell is provided with a plurality of second fixing holes, the input flange is provided with second positioning through holes matched with the second fixing holes, when the second connecting part is screwed into the second abutting part, the second positioning through holes are aligned with the second fixing holes, and the second screws are sequentially inserted into the second positioning through holes and the second fixing holes, through the improvement, the first fixing holes are matched with the first positioning through holes, and the second fixing holes are matched with the second positioning through holes, so that the relative positions of the inner gear ring, the input end shell and the input flange are determined, and the first screws and the second screws are connected to realize double sealing and better sealing performance.

[0011] In some embodiments, the inner side wall surface of the inner gear ring is provided with a containing groove, and a sealing ring is arranged in the containing groove, and the wall surface of the sealing ring is abutted with the wall surface of the input end shell, through the improvement, the sealing ring is arranged to further enhance the sealing performance between the inner gear ring and the input end shell.

[0012] Advantageous effects

[0013] The utility model provides a kind of precision planetary reducer, by the first connecting part is screwed into the first abutting part by the first extension part, realize the connection of inner gear ring and input end shell, and double sealing is carried out by the first screw, simultaneously, the installation quantity of first screw is reduced, and installation is more convenient;By the second connecting part is screwed into the second abutting part by the second extension part, realize the connection of input end shell and input flange, and double sealing is carried out by the second screw, simultaneously, the installation quantity of second screw is reduced, and installation is more convenient;A plurality of first connecting blocks are arranged at equal intervals around inner gear ring center axis, a plurality of second connecting blocks are arranged at equal intervals around input end shell center axis, so that when inner gear ring, input end shell and input flange have relative movement tendency, the wall surface of first connecting block is abutted with first connecting groove, and the wall surface of second connecting block is abutted with second connecting groove, because being arranged around equipment center axis, each angle is abutted, so that equipment runs more stably. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only some embodiments of the present application, and for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0015] Figure 1 The structural schematic diagram of the utility model is shown in the figure;

[0016] Figure 2 is a sectional structure schematic view of the utility model;

[0017] Figure 3 is another angle sectional structure schematic view of the utility model;

[0018] Figure 4 is other angle sectional structure schematic view of the utility model;

[0019] Figure 5 is the input end housing's elevation structure schematic view of the utility model;

[0020] Figure 6 is the sectional structure schematic view of the inner gear ring of the utility model;

[0021] Figure 7 is the input end housing's plan structure schematic view of the utility model;

[0022] Figure 8 is the input end housing's main view structure schematic view of the utility model;

[0023] Figure 9 is the sectional structure schematic view of the input end housing of the utility model;

[0024] Figure 10 is the structure schematic view of the input flange of the utility model.

[0025] In the drawing: 1, inner gear ring;1.1, first connecting groove;1.1.1, first extension part;1.1.2, first abutting part;1.2, first fixed hole;1.3, accommodating groove;1.4, first anti-skid pad;2, input end housing;2.1, first connecting block;2.1.1, first connecting part;2.2, second connecting groove;2.2.1, second extension part;2.2.2, second abutting part;2.3, second anti-skid pad;2.4, first positioning through hole;2.5, second fixed hole;3, input flange;3.1, second connecting block;3.1.1, second connecting part;3.2, second positioning through hole;4, first screw;5, second screw;6, output shaft;7, first deep groove ball bearing;8, planetary gear;9, input sun gear;10, needle roller;11, second deep groove ball bearing;12, sealing ring. DETAILED DESCRIPTION

[0026] The present application will be described in detail below in conjunction with the drawings and specific embodiments.

[0027] The following detailed description is presented in order to describe the embodiments of the application and it is not intended that the application be limited thereto. It will be appreciated that modifications to embodiments of the application described can be made by a person of ordinary skill in the art, without departing from the spirit and scope of the application. It is intended that the scope of the application be defined by the claims appended hereto, properly interpreted in light of the specification.

[0028] It is to be understood that the foregoing description is that of certain examples of the application and that numerous changes in the details of construction and the combination and arrangement of parts can be made by those skilled in the art without departing from the scope of the application. It is intended that all such changes be within the scope of the application claimed. It should be noted that some of the features of the examples can be used to advantage without the use of other features. As such, the foregoing description is not intended to be exhaustive or to limit the application to the precise forms disclosed. Changes can be made without departing from the spirit or scope of the application. It is intended that the scope of the application be governed only by the claims that follow.

[0029] It is also to be understood that the following description is only one example and is not intended to limit the application. Those skilled in the art will appreciate that other aspects can be derived from the description and that the specification can be implemented in many ways.

[0030] Further, in the following description, numerous specific details are set forth in order to provide a thorough understanding of the examples. However, it will be apparent to one skilled in the art that the examples can be practiced without the specific detail, or with an equivalent thereof.

[0031] The technical solutions provided by the embodiments of the present application are described below in combination with the drawings.

[0032] Reference will now be made to Figures 1-10As shown in the embodiment, the precision planetary reducer comprises an outer box body, the outer box body comprises an inner ring gear 1, an input end shell 2 and an input flange 3 which are sequentially connected, the inner ring gear 1 and the input end shell 2 are connected through a first screw 4, the input end shell 2 and the input flange 3 are connected through a second screw 5, an end surface of the input end shell 2 connected with the inner ring gear 1 is provided with a plurality of first connecting blocks 2.1, the inner ring gear 1 is provided with a first connecting groove 1.1 matched with the first connecting blocks 2.1, an end surface of the input flange 3 connected with the input end shell 2 is provided with a plurality of second connecting blocks 3.1, the input end shell 2 is provided with a second connecting groove 2.2 matched with the second connecting blocks 3.1, the first connecting block 2.1 comprises a first connecting part 2.1.1, the first connecting groove 1.1 comprises a first extending part 1.1.1 and a first abutting part 1.1.2, when the input end shell 2 is installed on the inner ring gear 1, the first connecting part 2.1.1 is screwed into the first abutting part 1.1.2 through the first extending part 1.1.1; the second connecting block 3.1 comprises a second abutting part 2.2.2, the second connecting groove 2.2 comprises a second extending part 2.2.1 and the second abutting part 2.2.2, when the input flange 3 is installed on the input end shell 2, the second connecting part 3.1.1 is screwed into the second abutting part 2.2.2 through the second extending part 2.2.1.

[0033] By screwing the first connecting part 2.1.1 into the first abutting part 1.1.2 through the first extending part 1.1.1, the connection of the inner ring gear 1 and the input end shell 2 is realized, the first connecting block 2.1 is abutted against the wall surface of the first connecting groove 1.1 to prevent the inner ring gear 1 and the input end shell 2 from shaking during the operation of the equipment, and the first screw 4 is fixed, because the inner ring gear 1 and the input end shell 2 are connected through the first connecting block 2.1 and the first connecting groove 1.1, the first screw 4 plays a double fixing role, the sealing is better, the equipment operation is more stable, meanwhile, the first screw 4 can reduce the number under the condition of ensuring the sealing, and the installation is more convenient; by screwing the second connecting part 3.1.1 into the second abutting part 2.2.2 through the second extending part 2.2.1, the connection of the input end shell 2 and the input flange 3 is realized, and the second screw 5 is used for double sealing, meanwhile, the installation number of the second screw 5 is reduced, and the installation is more convenient.

[0034] In some embodiments, as Figure 2As shown, the planetary reducer comprises an output shaft 6, a first deep groove ball bearing 7, a planetary gear 8, an input sun gear 9, a needle roller 10 and a second deep groove ball bearing 11; the input flange 3, the input end shell 2 and the inner ring gear 1 are sequentially fixedly connected from the input end to the output end, the input sun gear 9 is rotatably connected with the input end shell 2 through the second deep groove ball bearing 11, the input sun gear 9 meshes with the planetary gear 8, the planetary gear 8 meshes with the inner ring gear 1, the output shaft 6 is rotatably connected with the inner ring gear 1 through the first deep groove ball bearing 7, and the planetary gear 8 is rotatably connected with the output shaft 6 through the needle roller 10, so that the input sun gear 9 drives the planetary gear 8 to rotate, the planetary gear 8 meshes with the inner ring gear 1, the planetary gear 8 revolves around the central shaft of the device, and the output shaft 6 is driven to rotate around the central shaft.

[0035] In some embodiments, as shown in the drawings, Figures 4-10 As shown, the first connecting part 2.1.1 is symmetrically arranged on the opposite sides of the first connecting block 2.1, and the second connecting part 3.1.1 is symmetrically arranged on the opposite sides of the second connecting block 3.1. It should be noted that the first connecting block 2.1 increases the contact area with the first connecting groove 1.1, and the second connecting block 3.1 increases the contact area with the second connecting groove 2.2, thereby enhancing the bearing capacity of the first connecting block 2.1 or the second connecting block 3.1, and making the device run more stably.

[0036] In some embodiments, as shown in the drawings, Figure 7 As shown, the plurality of first connecting blocks 2.1 are arranged at equal intervals around the central shaft of the input end shell 2, and the plurality of second connecting blocks 3.1 are arranged at equal intervals around the central shaft of the input flange 3. It should be noted that when the inner ring gear 1, the input end shell 2 and the input flange 3 have a relative movement trend, the first connecting block 2.1 abuts against the wall surface of the first connecting groove 1.1, and the second connecting block 3.1 abuts against the wall surface of the second connecting groove 2.2. Since they are arranged circumferentially around the central shaft of the device, they abut at various angles, making the device run more stably.

[0037] In some embodiments, as shown in the drawings, Figures 6-10 As shown, the first abutting part 1.1.2 is internally provided with a first anti-skid pad 1.4, the first connecting block 2.1 moves into the first abutting part 1.1.2, and the first connecting block 2.1 abuts against the first anti-skid pad 1.4. The second abutting part 2.2.2 is internally provided with a second anti-skid pad 2.3, the second connecting block 3.1 moves into the first abutting part 1.1.2, and the second connecting block 3.1 abuts against the second anti-skid pad 2.3. It should be noted that the arrangement of the first anti-skid pad 1.4 and the second anti-skid pad 2.3 prevents the device from producing abnormal noise due to shaking during operation, and also enhances the abutting force of the first connecting block 2.1 and the first abutting part 1.1.2, and the abutting force of the second connecting block 3.1 and the second abutting part 2.2.2, thereby preventing the first connecting block 2.1 from easily sliding out of the first abutting part 1.1.2, and preventing the second connecting block 3.1 from easily sliding out of the second abutting part 2.2.2.

[0038] In some embodiments, as shown in Figures 2-7 The inner gear ring 1 is provided with a plurality of first fixing holes 1.2, and the input end shell 2 is provided with first positioning through holes 2.4 matched with the first fixing holes 1.2. When the first connecting part 2.1.1 is screwed into the first abutting part 1.1.2, the first positioning through holes 2.4 are aligned with the first fixing holes 1.2, and the first screws 4 are sequentially inserted into the first positioning through holes 2.4 and the first fixing holes 1.2. The input end shell 2 is provided with a plurality of second fixing holes 2.5, and the input flange 3 is provided with second positioning through holes 3.2 matched with the second fixing holes 2.5. When the second connecting part 3.1.1 is screwed into the second abutting part 2.2.2, the second positioning through holes 3.2 are aligned with the second fixing holes 2.5, and the second screws 5 are sequentially inserted into the second positioning through holes 3.2 and the second fixing holes 2.5. It should be noted that the relative positions of the inner gear ring 1, the input end shell 2 and the input flange 3 are determined by the cooperation of the first fixing holes 1.2 and the first positioning through holes 2.4, the second fixing holes 2.5 and the second positioning through holes 3.2, and the double sealing is achieved by the first screws 4 and the second screws 5, so that the sealing performance is better.

[0039] In some embodiments, as shown in Figure 2 The inner wall surface of the inner gear ring 1 is provided with a containing groove 1.3, and the containing groove 1.3 is provided with a sealing ring 12. The wall surface of the sealing ring 12 abuts against the wall surface of the input end shell 2. It should be noted that the sealing ring 12 further enhances the sealing performance between the inner gear ring 1 and the input end shell 2.

[0040] In the present specification, the same or similar parts among various embodiments can be referred to each other, and each embodiment focuses on the difference from other embodiments.

[0041] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements easily thought of by those skilled in the art within the technical range disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A precision planetary gear reducer, comprising an outer housing, characterized in that: The outer casing includes an internal gear ring (1), an input end housing (2), and an input flange (3). The internal gear ring (1), the input end housing (2), and the input flange (3) are connected in sequence. The internal gear ring (1) and the input end housing (2) are connected by a first screw (4), and the input end housing (2) and the input flange (3) are connected by a second screw (5). The end face of the input end housing (2) connected to the internal gear ring (1) is provided with a plurality of first connecting blocks (2.1). The internal gear ring (1) is provided with a first connecting groove (1.1) that mates with the first connecting blocks (2.1). The end face of the input flange (3) connected to the input end housing (2) is provided with a plurality of second connecting blocks (3.1). The input end housing (2) is provided with a second connecting groove (2.1) that mates with the second connecting blocks (3.1). 2), the first connecting block (2.1) includes a first connecting part (2.1.1), the first connecting groove (1.1) includes a first insert part (1.1.1) and a first abutting part (1.1.2), when the input end housing (2) is installed on the internal gear ring (1), the first connecting part (2.1.1) is screwed into the first abutting part (1.1.2) through the first insert part (1.1.1); the second connecting block (3.1) includes a second abutting part (2.2.2), the second connecting groove (2.2) includes a second insert part (2.2.1) and a second abutting part (2.2.2), when the input flange (3) is installed on the input end housing (2), the second connecting part (3.1.1) is screwed into the second abutting part (2.2.2) through the second insert part (2.2.1).

2. The precision planetary reducer according to claim 1, characterized in that: The first connecting part (2.1.1) is symmetrically arranged on opposite sides of the first connecting block (2.1), and the second connecting part (3.1.1) is symmetrically arranged on opposite sides of the second connecting block (3.1).

3. The precision planetary reducer according to claim 1, characterized in that: A plurality of first connecting blocks (2.1) are arranged at equal intervals around the central axis of the input end housing (2), and a plurality of second connecting blocks (3.1) are arranged at equal intervals around the central axis of the input flange (3).

4. A precision planetary reducer according to claim 3, characterized in that: The first abutting part (1.1.2) is provided with a first anti-slip pad (1.4). The first connecting block (2.1) moves into the first abutting part (1.1.2) and abuts against the first anti-slip pad (1.4). The second abutting part (2.2.2) is provided with a second anti-slip pad (2.3). The second connecting block (3.1) moves into the first abutting part (1.1.2) and abuts against the second anti-slip pad (2.3).

5. A precision planetary reducer according to claim 1, characterized in that: The internal gear ring (1) is provided with a plurality of first fixing holes (1.2), and the input end housing (2) is provided with a first positioning through hole (2.4) that mates with the first fixing hole (1.2). When the first connecting part (2.1.1) is screwed into the first abutting part (1.1.2), the first positioning through hole (2.4) is aligned with the first fixing hole (1.2), and the first screw (4) is inserted into the first positioning through hole (2.4) and the first fixing hole (1.2) in sequence. The input end housing (2) is provided with a plurality of second fixing holes (2.5), and the input flange (3) is provided with a second positioning through hole (3.2) that mates with the second fixing hole (2.5). When the second connecting part (3.1.1) is screwed into the second abutting part (2.2.2), the second positioning through hole (3.2) is aligned with the second fixing hole (2.5), and the second screw (5) is inserted into the second positioning through hole (3.2) and the second fixing hole (2.5) in sequence.

6. A precision planetary reducer according to claim 1, characterized in that: The inner sidewall of the internal gear ring (1) is provided with a receiving groove (1.3), and a sealing ring (12) is provided in the receiving groove (1.3). The wall of the sealing ring (12) abuts against the wall of the input end housing (2).

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