Output shaft pulling assembly and planetary wobble ring box

Abstract

The utility model provides an output shaft pulling assembly and a planetary wobble ring box. The output shaft pulling assembly comprises an output ring, an output chassis, a self-aligning roller bearing and an output shaft; the output chassis is connected with the output ring, and a mounting space is enclosed between the output chassis and the output ring; one end of the output shaft is connected to one end of the planetary gear shaft extending out of the planetary wobble box along the axis direction, and the other end extends to the mounting space; and a self-aligning roller bearing is sleeved on the output shaft positioned in the mounting cavity, so that when the output shaft rotates, the output ring does not rotate in cooperation with the output shaft. The self-aligning roller bearing is arranged in the mounting space, so that the self-aligning roller bearing is in a sealed state, and the sealing structure can prevent pollutants from entering the self-aligning roller bearing, so that the damage of the pollutants to the self-aligning roller bearing can be reduced to a certain extent, the service life of the self-aligning roller bearing is prolonged, and the service life of the self-aligning roller bearing is prolonged. And the maintenance cost is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery and equipment, and in particular to an output pull-out shaft assembly and a planetary swing ring box. Background Art

[0002] Agricultural companies continue to develop large harvesters, iterate the entire product platform, continuously upgrade the cutting table, increase the cutting width, and increase the carrying capacity of the swing ring box.

[0003] The patent number is: 202311339829.X, and the patent name is a new type of planetary gear swing ring box. The patent discloses a planetary gear swing ring box with a moving knife connecting part; specifically, the inner wall of the rotating matching part and the swing shaft are rotationally matched through a double-row first deep groove ball bearing; the moving knife connecting part and the outer wall of the rotating matching part are coaxially fixedly connected; two parallel moving knife connecting plates are provided on the moving knife connecting part, and connecting bolts for installing the moving knife are vertically arranged on the two moving knife connecting plates; wherein the central axis of the rotating matching part is located on the bisector M of the distance between the two moving knife connecting plates.

[0004] With the above structure, it was found after practical verification that the movable knife connecting piece has no sealing structure. During use, dust, straw, etc. often enter the movable knife connecting piece, which will interfere with the normal transmission movement of the internal components of the movable knife connecting piece on the one hand, and reduce the service life of the internal components of the movable knife connecting piece on the other hand.

[0005] Therefore, there is an urgent need for an output pull shaft assembly and a planetary swing ring box to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0006] The purpose of this application is to provide an output pull-shaft assembly and a planetary swing ring box, which can improve service life and reduce maintenance costs to a certain extent.

[0007] The present application provides an output pull-shaft assembly connected to a planetary gear shaft extending from a planetary swing ring box; the output pull-shaft assembly comprises an output ring capable of connecting to a moving knife assembly, an output chassis, a spherical roller bearing and an output shaft;

[0008] The output chassis is connected to the output ring and an installation space is provided between the output chassis and the output ring;

[0009] One end of the output shaft is connected to one end of the planetary gear shaft extending out of the planetary swing ring box along its axial direction, and the other end extends to the installation space;

[0010] The output shaft located in the installation space is sleeved with the spherical roller bearing, so that when the output shaft rotates, the output ring does not rotate with the output shaft.

[0011] In the above technical solution, further, the output pull-shaft assembly also includes a straight-through pressure-filled oil cup with a hole bolt;

[0012] The bolt with a hole passes through the output shaft and is located at the bottom of the installation space, and the straight-through pressure injection oil cup is arranged on the side wall of the output shaft;

[0013] The output shaft is provided with a flow channel, one end of which is connected to the straight-through pressure injection oil cup and the other end of which is connected to the bolt with a hole;

[0014] Lubricating grease can be input into the spherical roller bearing through the straight-through oil injection cup, the flow channel and the bolt with holes.

[0015] In the above technical solution, further, the output shaft puller assembly also includes an oil cup dust cap;

[0016] The oil cup dust cap is arranged on the straight-through pressure injection oil cup.

[0017] In the above technical solution, further, a washer is provided between the output shaft and the bolt with a hole;

[0018] The washer is fixed to the output shaft via an elastic cylindrical pin.

[0019] In the above technical solution, further, an oil seal seat is sleeved on the output shaft in the installation space; the oil seal seat is located above the spherical roller bearing.

[0020] In the above technical solution, further, a V-ring is provided between the output ring and the oil seal seat.

[0021] In the above technical solution, further, a protective cover is provided at one end of the output ring away from the output chassis.

[0022] In the above technical solution, further, a hole retaining ring is provided between the output ring and the output chassis.

[0023] The present application also provides a planetary swing ring box, comprising a box body and the above-mentioned output pull-out shaft assembly;

[0024] The housing comprises an upper housing and a lower housing; the upper housing and the lower housing are connected by a connecting piece and a receiving cavity is arranged between the upper housing and the lower housing, the receiving cavity is used to receive the input shaft, the first bevel gear, the second bevel gear, the eccentric shaft, the planetary gear shaft with planetary gears and the inner gear ring;

[0025] The input shaft is located at one end of the housing and is rotatably matched with the housing. The input shaft extends out of the housing along its axial direction at one end and is coaxially fixedly connected to the input pulley. The first bevel gear is coaxially fixed to the input shaft, and the first bevel gear is meshingly connected to the second bevel gear. The second bevel gear is coaxially fixedly connected to the eccentric shaft, and the eccentric shaft is rotatably matched with the housing. A mounting cavity for mounting the planetary gear is provided in the eccentric shaft, and the central axis of the mounting cavity is parallel to the central axis of the eccentric shaft. A through meshing window is provided at the radial outer end of the mounting cavity away from the central axis of the eccentric shaft. The planetary gear is rotatably connected to the inner wall of the mounting cavity. The inner gear ring is fixedly provided in the housing, and the planetary gear is meshingly connected to the inner gear ring in the meshing window.

[0026] The part of the planetary gear shaft extending out of the housing along the axis direction thereof is connected to the output pull shaft assembly.

[0027] In the above technical solution, further, an oblique hole is provided on the top surface where the eccentric shaft is connected to the planetary gear shaft, and the oblique hole communicates with the installation cavity and the inner cavity of the box body.

[0028] Compared with the prior art, this application has the following beneficial effects:

[0029] The present application provides an output pull-shaft assembly connected to a planetary gear shaft extending from a planetary swing ring box; the output pull-shaft assembly comprises an output ring capable of connecting to a moving knife assembly, an output chassis, a spherical roller bearing and an output shaft;

[0030] The output chassis is connected to the output ring and an installation space is provided between the output chassis and the output ring;

[0031] One end of the output shaft is connected to one end of the planetary gear shaft extending out of the planetary swing ring box along its axial direction, and the other end extends to the installation space;

[0032] The output shaft located in the installation space is sleeved with the spherical roller bearing, so that when the output shaft rotates, the output ring does not rotate with the output shaft.

[0033] In summary, the present application arranges the spherical roller bearing in the installation space so that the spherical roller bearing is in a sealed state. This sealing structure can prevent contaminants from entering the spherical roller bearing, thereby reducing the damage caused to the spherical roller bearing by contaminants to a certain extent, thereby increasing the service life of the spherical roller bearing and reducing maintenance costs.

[0034] The present application also provides a planetary swing ring box, including a box body and the above-mentioned output shaft pulling assembly; therefore, it has all the beneficial effects of the above-mentioned output shaft pulling assembly, which will not be elaborated in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of the structure of the planetary swing ring box provided for this application;

[0037] Figure 2 for Figure 1 A cross-sectional view of

[0038] Figure 3 A schematic diagram of the structure of the eccentric shaft in the planetary swing ring box provided in this application;

[0039] Figure 4 A cross-sectional view of an output pull-out shaft assembly in a planetary swing ring box provided in the present application;

[0040] Figure 5 This is a schematic diagram of the principle of the planetary swing ring box provided in this application.

[0041] Figure markings: 1-input pulley; 2-first deep groove ball bearing; 3-first bevel gear; 4-elastic cylindrical pin; 5-first flat key; 6-output shaft; 7-protective cover; 8-second deep groove ball bearing; 9-eccentric shaft; 901-installation cavity; 902-engagement window; 903-oblique hole; 10-lower housing; 11-planetary gear shaft; 12-output ring; 13-oil seal seat; 14-output pull-shaft assembly; 15-second double-row deep groove ball bearing; 16-V-ring; 17-needle bearing; 18-third deep groove ball bearing; 19-second bevel gear; 20-output chassis; 21-input shaft; 22-bolt with hole; 23-washer; 24-third double-row deep groove ball bearing; 25-upper housing; 26-oil cup; 27-spherical roller bearing; 28-hole retaining ring; 29-straight-through pressure-injection oil cup; 30-oil cup dust cap. DETAILED DESCRIPTION

[0042] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0043] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0044] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0045] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0046] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0047] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0048] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0049] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0050] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0051] Combine the following Figure 1-Figure 5 The planetary swing ring box provided by the present application is described in detail.

[0052] like Figure 1-2As shown, a novel planetary gear swing ring box includes a box body, which is connected to the harvester header through four bolts when in use (it is worth noting that in the actual connection process, it is not limited to four bolts, and more or less bolts can be selected according to actual conditions); an input shaft 21, a first bevel gear 3, a second bevel gear 19, an eccentric shaft 9, a planetary gear shaft 11 and an inner gear ring are arranged in the box body; the box body is cylindrical, and the axis of the input shaft 21 is parallel to the radial direction of the cross section of the cylindrical body. One end of the input shaft 21 is located in the box body and rotates with the box body. The input shaft 21 rotates with the box body. One end of the shaft 21 extending out of the housing is coaxially fixedly connected to the input pulley 1. When in use, the input pulley 1 is connected to a power mechanism (the power mechanism refers to a driving motor, which is connected to the input pulley 1 through a belt via a transmission shaft. The specific structure of the power mechanism is understandable to those skilled in the art and will not be elaborated on here) to input power; the first bevel gear 3 is coaxially fixedly arranged on the input shaft 21, and the first bevel gear 3 is meshedly connected to the second bevel gear 19; the second bevel gear 19 is coaxially fixedly connected to the eccentric shaft 9, and the eccentric shaft 9 is rotationally matched with the housing.

[0053] like Figure 3 As shown, a mounting cavity 901 for mounting the planetary gear shaft 11 is provided in the eccentric shaft 9, the central axis of the mounting cavity 901 is parallel to the central axis of the eccentric shaft 9, and a through meshing window 902 is provided at the radial outer end of the mounting cavity 901 away from the central axis of the eccentric shaft 9.

[0054] Specifically, the planetary gear shaft 11 rotates with the inner wall of the installation cavity 901, the planetary gears of the planetary gear shaft 11 are meshed with the inner ring gear through the meshing window 902, and the inner ring gear is fixed in the housing by bolts; specifically, the eccentric shaft 9 and the inner ring gear are coaxially arranged; in this application, the eccentric shaft 9 plays the role of a planetary carrier.

[0055] Combination Figure 1 and Figure 2 As shown, the end of the planetary gear shaft 11 extending out of the mounting cavity 901 is connected to the output pull-shaft assembly 14, and the output pull-shaft assembly 14 is connected to the moving knife of the harvester. When the eccentric shaft 9 rotates, the moving knife of the harvester realizes linear reciprocating motion (the principle of linear reciprocating motion is explained below).

[0056] Specifically, one end of the input shaft 21 located in the housing is rotatably matched with the housing through a third double-row deep groove ball bearing 24; further, one end of the input shaft 21 located in the housing is provided with a round nut three for axially positioning the third double-row deep groove ball bearing 24.

[0057] Specifically, the first bevel gear 3 and the input pulley 1 are coaxially fixedly connected to the input shaft 21 via the first flat key 5; the end face of the input pulley 1 is axially fixedly connected to the input shaft 21 via a round nut 1.

[0058] Specifically, the outer ring of the first bevel gear 3 is rotationally matched with the housing through the first deep groove ball bearing 2 .

[0059] In summary, the input shaft 21 and the input pulley 1 can be better fixed to achieve the stability and safety of the planetary gear swing ring box. Among them, the third double-row deep groove ball bearing 24 and the first deep groove ball bearing 2 are arranged to achieve rolling support for the input shaft 21 and the first bevel gear 3, so that the first bevel gear 3 can run better, effectively reduce the vibration level, and reduce the failure rate.

[0060] Specifically, the inner ring of the second bevel gear 19 is coaxially fixedly connected to the eccentric shaft 9 through a second flat key, and the outer ring of the second bevel gear 19 is rotationally matched with the housing through a third deep groove ball bearing 18 .

[0061] Specifically, a round nut 2 is provided at one end of the eccentric shaft 9 for fixing the second bevel gear 19 in the axial direction.

[0062] In summary, the stable operation of the second bevel gear 19 can be guaranteed, the vibration level can be effectively reduced, and the failure rate can be reduced.

[0063] Specifically, the eccentric shaft 9 is rotationally matched with the housing through the second deep groove ball bearing 8 .

[0064] Specifically, one end of the planetary gear shaft 11 is rotationally matched with the installation cavity 901 through a needle bearing 17 , and the other end of the planetary gear shaft 11 is rotationally matched with the installation cavity 901 through a second double-row deep groove ball bearing 15 .

[0065] In summary, it is beneficial to the smooth operation of the planetary gear shaft 11, effectively reducing the vibration level and the failure rate.

[0066] In this embodiment, combined Figure 1 and Figure 2 As shown, the box body includes an upper shell 25 and a lower shell 10; the upper shell 25 and the lower shell 10 are connected by a connecting member and an accommodating cavity is surrounded between the upper shell 25 and the lower shell 10. Preferably, the connecting member is a connecting bolt.

[0067] Specifically, combined Figure 3 As shown, an inclined hole 903 is provided on the top surface where the eccentric shaft 9 is connected to the planetary gear shaft 11, and the inclined hole 903 communicates the installation cavity 901 with the accommodating cavity. In actual use, an oil cup 26 is provided on the upper shell 25, and lubricating oil is injected into the inner cavity of the housing through the oil cup 26. The lubricating oil directly acts on the needle bearing 17 through the inclined hole 903, thereby ensuring that the needle bearing 17 has a good lubrication effect, improving its service life to a certain extent, and thus improving the service life of the entire machine.

[0068] In this embodiment, combined Figure 4 As shown, the output pull-shaft assembly 14 is connected to the planetary gear shaft 11 extending from the planetary swing ring box; specifically, the output pull-shaft assembly 14 includes an output ring 12 that can be connected to the movable knife assembly, an output chassis, a spherical roller bearing 27 and an output shaft 6.

[0069] Specifically, the output chassis is connected to the output ring 12 and an installation space is set between the output ring 12; one end of the output shaft 6 is connected to one end of the planetary gear shaft 11 extending out of the planetary swing ring box along its axial direction, and the other end extends to the installation space.

[0070] Specifically, the output shaft 6 in the mounting cavity 901 is sleeved with a spherical roller bearing 27, so that when the output shaft 6 rotates, the output ring 12 does not rotate with the output shaft 6. Specifically, the number of teeth of the inner ring gear is twice the number of teeth of the planetary gear. Figure 2 and Figure 5 As shown, the output arm length La of the planetary gear is equal to the pitch circle radius r when the planetary gear is meshing with the inner gear ring; the output arm length La is the distance between the output shaft 6 and the planetary gear shaft 11; through such parameter settings, the rotational motion of the eccentric shaft 9 is converted into the linear reciprocating motion of the moving knife (for specific detailed principles, please refer to "A Brief Discussion on the Design Principles and Applications of Planetary Gear Swing Ring Boxes" edited by Xu Weicheng).

[0071] In summary, the present application arranges the spherical roller bearing 27 in the installation space so that the spherical roller bearing 27 is in a sealed state. This sealing structure can prevent contaminants from entering the spherical roller bearing 27, thereby reducing the damage caused by contaminants to the spherical roller bearing 27 to a certain extent, thereby increasing the service life of the spherical roller bearing 27 and reducing maintenance costs.

[0072] Furthermore, the output pull-shaft assembly 14 also includes a straight-through pressure-injection oil cup 29 with a hole bolt 22; the hole bolt 22 passes through the output shaft 6 and is located at the bottom of the installation space, and the straight-through pressure-injection oil cup 29 is arranged on the side wall of the output shaft 6; a flow channel is opened on the output shaft 6, one end of the flow channel is connected to the straight-through pressure-injection oil cup 29 and the other end is connected to the hole bolt 22; lubricating grease can be input into the spherical roller bearing 27 through the straight-through pressure-injection oil cup 29, the flow channel and the hole bolt 22.

[0073] In summary, the present application can input lubricating grease into the spherical roller bearing 27 through the straight-through pressure-injection oil cup 29, so that the spherical roller bearing 27 is in a lubricated state during use, thereby improving the service life of the spherical roller bearing 27 to a certain extent.

[0074] Furthermore, the output pull shaft assembly 14 also includes an oil cup dust cap 30; the oil cup dust cap 30 is arranged on the straight-through pressure injection oil cup 29, and the oil cup dust cap 30 is used to seal the straight-through pressure injection oil cup 29, which can prevent pollutants from entering the spherical roller bearing 27 through the straight-through pressure injection oil cup 29.

[0075] Furthermore, a washer 23 is provided between the output shaft 6 and the bolt with a hole 22 ; the washer 23 is fixed to the output shaft 6 via an elastic cylindrical pin 4 .

[0076] Furthermore, an oil seal seat 13 is sleeved on the output shaft 6 in the installation space; the oil seal seat 13 is located above the spherical roller bearing 27 .

[0077] Furthermore, a V-ring 16 is provided between the output ring 12 and the oil seal seat 13 .

[0078] Furthermore, a protective cover 7 is provided at one end of the output ring 12 away from the output chassis 20 .

[0079] Furthermore, a hole retaining ring 28 is provided between the output ring 12 and the output chassis.

[0080] In actual use, grease is injected into the spherical roller bearing 27 through the straight-through pressure injection oil cup 29 . During the injection process, the air in the hole bolt 22 will flow out through the gap between the oil seal seat 13 and the V-ring 16 .

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with 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. An output pull shaft assembly connected to a planetary gear shaft extending from a planetary swing ring box; characterized in that: The output shaft pulling assembly includes an output ring capable of connecting to the moving knife assembly, an output chassis, a spherical roller bearing and an output shaft; The output chassis is connected to the output ring and an installation space is provided between the output chassis and the output ring; One end of the output shaft is connected to one end of the planetary gear shaft extending out of the planetary swing ring box along its axial direction, and the other end extends to the installation space; The output shaft located in the installation space is sleeved with the spherical roller bearing, so that when the output shaft rotates, the output ring does not rotate with the output shaft.

2. The output shaft puller assembly according to claim 1, characterized in that: The output pull-shaft assembly also includes a straight-through pressure-filled oil cup with a hole bolt; The bolt with a hole passes through the output shaft and is located at the bottom of the installation space, and the straight-through pressure injection oil cup is arranged on the side wall of the output shaft; The output shaft is provided with a flow channel, one end of which is connected to the straight-through pressure injection oil cup and the other end of which is connected to the bolt with a hole; Lubricating grease can be input into the spherical roller bearing through the straight-through oil injection cup, the flow channel and the bolt with holes.

3. The output shaft assembly according to claim 2, characterized in that: The output shaft assembly also includes an oil cup dust cap; The oil cup dust cap is arranged on the straight-through pressure injection oil cup.

4. The output shaft puller assembly according to claim 3, characterized in that: A washer is also provided between the output shaft and the bolt with a hole; The washer is fixed to the output shaft via an elastic cylindrical pin.

5. The output shaft puller assembly according to claim 1, characterized in that: An oil seal seat is also sleeved on the output shaft in the installation space; the oil seal seat is located above the spherical roller bearing.

6. The output shaft puller assembly according to claim 5, characterized in that: A V-shaped ring is arranged between the output ring and the oil seal seat.

7. The output shaft puller assembly according to claim 1, characterized in that: A protective cover is provided at one end of the output ring away from the output chassis.

8. The output shaft puller assembly according to claim 1, characterized in that: A hole retaining ring is arranged between the output ring and the output chassis.

9. A planetary swing ring box, characterized in that: It comprises a box body and an output shaft pulling assembly as described in any one of claims 1 to 8; The housing comprises an upper housing and a lower housing; the upper housing and the lower housing are connected by a connecting piece and a receiving cavity is arranged between the upper housing and the lower housing, the receiving cavity is used to receive the input shaft, the first bevel gear, the second bevel gear, the eccentric shaft, the planetary gear shaft with planetary gears and the inner gear ring; The input shaft is located at one end of the housing and is rotatably matched with the housing. The input shaft extends out of the housing along its axial direction at one end and is coaxially fixedly connected to the input pulley. The first bevel gear is coaxially fixed to the input shaft, and the first bevel gear is meshingly connected to the second bevel gear. The second bevel gear is coaxially fixedly connected to the eccentric shaft, and the eccentric shaft is rotatably matched with the housing. A mounting cavity for mounting the planetary gear is provided in the eccentric shaft, and the central axis of the mounting cavity is parallel to the central axis of the eccentric shaft. A through meshing window is provided at the radial outer end of the mounting cavity away from the central axis of the eccentric shaft. The planetary gear is rotatably connected to the inner wall of the mounting cavity. The inner gear ring is fixedly provided in the housing, and the planetary gear is meshingly connected to the inner gear ring in the meshing window. The part of the planetary gear shaft extending out of the housing along the axis direction thereof is connected to the output pull shaft assembly.

10. The planetary swing ring box according to claim 9, characterized in that: An oblique hole is formed on the top surface where the eccentric shaft is connected to the planetary gear shaft, and the oblique hole communicates with the installation cavity and the inner cavity of the box body.

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