Gasket structure of planetary reducer

Abstract

The gasket structure of the planetary reducer comprises gaskets arranged at the two ends of a planetary gear shaft in a sleeved mode, the two side faces of each gasket make contact with the end face of a planetary gear and a planetary carrier respectively, each gasket is provided with a bent part, the planetary carrier is provided with a groove corresponding to the bent part, and the bent parts are located in the grooves. The width of the bent part is the same as that of the groove, the two side faces of the bent part abut against the inner walls of the two sides of the groove, the gasket is fixed through the bent part and the groove, and therefore abrasion between the gasket and the planet carrier is avoided, and reliable operation of the speed reducer is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of speed reducer, more specifically relates to a gasket structure of planetary reducer. BACKGROUND

[0002] In prior art, planetary gear gasket widely adopts 65Mn steel, in order to improve the wear resistance of steel gasket, usually will increase phosphating etc. Surface treatment measures, but the surface roughness of gasket after phosphating is difficult to control, still there is the risk of gasket or planet carrier wear, another scheme is to use polyethylene and other high molecular materials to make gasket, but the cost is higher, there is another scheme to use copper gasket and steel gasket double-layer structure, although the rotational speed difference between gasket and planet carrier can be reduced to reduce wear, but the thickness increases, and it will occupy the axial space of large planetary gear, and the material cost is also higher.

[0003] Therefore, the planetary gear gasket structure in the prior art has the problems of high wear risk, high cost and large space occupation. INVENTION CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a gasket structure of planetary reducer, which fixes the gasket and avoids wear between the gasket and the planet carrier, ensuring reliable operation of the speed reducer.

[0005] To achieve the above object, the utility model provides the following technical scheme: a gasket structure of planetary reducer, including the gasket of sleeve setting at both ends of planetary gear shaft, two side surfaces of the gasket are in contact with the end surface of planetary gear and planet carrier respectively, the gasket is provided with a bending part, the planet carrier is provided with a groove corresponding to the bending part, the bending part is located in the groove, and the width of the bending part is same with the width of the groove, so that the two side surfaces of the bending part are in abutment with the two side inner walls of the groove.

[0006] Further, the depth of the groove is greater than the thickness of the bending part.

[0007] Further, the length of the groove is greater than the bending length of the bending part.

[0008] Further, the gasket is provided with an axle hole, and the side edges of the axle hole are circumferentially distributed with a plurality of oil channel holes, the oil channel holes are communicated with the axle hole, and the end portions of the oil channel holes extend to the edge of the gasket.

[0009] Further, the bending part is a bending sheet integrated with the gasket, and the thickness of the bending sheet is same with the thickness of the gasket.

[0010] Further, the bending part is provided with a recess at the connection between the two sides of the gasket.

[0011] Compared with the prior art, the planet wheel shaft is connected with the planet gear, then the gasket is sleeved on the planet wheel shaft, the bending part on the gasket is aligned with the groove on the planet carrier when the planet wheel shaft is installed, and the bending part is clamped into the groove, so that the gasket can be fixed, thereby avoiding the abrasion between the gasket and the planet carrier and ensuring the reliable operation of the speed reducer. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an internal structure schematic view of the planet speed reducer of the utility model;

[0013] Figure 2 It is Figure 1 It is an enlarged view of A part in the middle;

[0014] Figure 3 It is a structure schematic view of the gasket.

[0015] Reference signs: planet wheel shaft 1, gasket 2, planet gear 3, planet carrier 4, bending part 5, groove 6, wheel shaft hole 7, oil channel hole 8, recess 9. DETAILED DESCRIPTION

[0016] In the description of the utility model, it needs to be explained that for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0017] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and the meaning of "several", "several" in the description of the utility model is two or more than two, unless otherwise specifically limited.

[0018] Referring to Figures 1 to 3 Further description of the utility model.

[0019] A shim structure for a planetary reducer includes shims 2 fitted onto both ends of a planetary gear shaft 1. The two sides of the shims 2 contact the end faces of a planetary gear 3 and a planet carrier 4, respectively. A bent portion 5 is provided on the shims 2, and a groove 6 corresponding to the bent portion 5 is provided on the planet carrier 4. The bent portion 5 is located within the groove 6, and the width of the bent portion 5 is the same as the width of the groove 6, so that the two sides of the bent portion 5 abut against the inner walls of the two sides of the groove 6.

[0020] Specifically, the bend 5 and the groove 6 can be connected using interference and transition fits, but clearance fits are not allowed to prevent the gasket 2 from rotating due to friction.

[0021] Specifically, the gasket 2 can be made of metal materials such as steel.

[0022] like Figure 2 As shown, in this embodiment, preferably, the depth of the groove 6 is greater than the thickness of the bent portion 5.

[0023] like Figure 2 As shown in this embodiment, preferably, the length of the groove 6 is greater than the bending length of the bent portion 5.

[0024] like Figure 3 As shown in the preferred embodiment, the gasket 2 is provided with a wheel axle hole 7, and a plurality of oil passage holes 8 are evenly distributed on the side circumferentially of the wheel axle hole 7. The oil passage holes 8 are connected to the wheel axle hole 7, and the ends of the oil passage holes 8 extend toward the edge of the gasket 2.

[0025] Specifically, after the gasket 2 is installed, a lubricating oil channel is formed inside through the oil passage hole 8, which provides lubrication between the contact surface of the gasket 2 and the planetary gear 3 and the contact surface of the gasket 2 and the planet carrier 4, thereby further reducing the wear of the gasket 2.

[0026] like Figure 3 As shown in the figure, in this preferred embodiment, there are three oil passage holes 8.

[0027] like Figure 3 As shown in the preferred embodiment, the bending portion 5 is a bent piece integral with the gasket 2, and the thickness of the bent piece is the same as the thickness of the gasket 2.

[0028] like Figure 2 As shown in this embodiment, preferably, the two sides of the connecting pad 2 of the bending part 5 are provided with recesses 9 to improve the torsional strength of the bending part 5.

[0029] like Figures 1 to 3As shown, after connecting the planetary gear 3 on the planetary wheel shaft 1, the gasket 2 is sleeved on the planetary wheel shaft 1, and when the planetary wheel shaft 1 is installed, the bending part 5 on the gasket 2 is aligned with the groove 6 on the planet carrier 4, and the bending part 5 is clamped into the groove 6, so that the gasket 2 is fixed, thereby avoiding the wear between the gasket 2 and the planet carrier 4, and ensuring the reliable operation of the speed reducer.

[0030] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and refinements without departing from the principles of the present application, these improvements and refinements shall be considered as the protection scope of the present application.

Claims

1. A washer structure of a planetary reducer, characterized by: The spacer is sleeved on both ends of the planet wheel shaft, two sides of the spacer are in contact with end faces of the planet gear and the planet carrier respectively, a bending part is arranged on the spacer, a corresponding groove is arranged on the planet carrier, the bending part is located in the groove, and the width of the bending part is the same as the width of the groove, so that two sides of the bending part are in abutment with two inner walls of the groove.

2. The planet reduction gear pad structure according to claim 1, characterized by: The depth of the groove is greater than the thickness of the bending part.

3. The planet reduction gear washer structure according to claim 1, characterized by: The length of the groove is greater than the bending length of the bending part.

4. The planet reduction gear washer structure according to claim 1, characterized by: An axle hole is arranged on the spacer, a plurality of oil channel holes are uniformly distributed on the side edge of the axle hole in the circumferential direction, the oil channel holes are communicated with the axle hole, and the end of the oil channel hole extends to the edge of the spacer.

5. The planet reduction gear washer structure according to claim 1, characterized by: The bending part is a bending piece integrated with the spacer, and the thickness of the bending piece is the same as the thickness of the spacer.

6. The planet reduction gear pad structure according to claim 1, characterized by: The bending part is connected with the two sides of the spacer and is provided with a recess.

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