Planet wheel bearing capable of bearing limit centrifugal force

Abstract

The utility model provides a planet wheel bearing capable of bearing limit centrifugal force, which relates to the technical field of planetary transmission and comprises a tooth type outer ring, the outside of the tooth type outer ring is of a gear structure, and arc groove structures are arranged on the inner side of the tooth type outer ring at equal intervals in a surrounding manner; the number of the composite inner rings is two, arc groove structures are formed in the outer sides of the two sets of composite inner rings at equal intervals in a surrounding mode, the number of the arc groove structures of the composite inner rings is the same as that of the arc groove structures of the tooth type outer ring, and the diameters of the arc groove structures of the composite inner rings are the same as those of the arc groove structures of the tooth type outer ring; the composite inner ring and the connecting ring provide a combined assembly function, and the inner side of the tooth-type outer ring is provided with the arc groove structure which is matched with the inner ring of the composite inner ring to form the retainer, so that the original independent retainer is replaced, one part is reduced, the stability is improved, the position of the roller does not need to be maintained by using an independent retainer, and the service life of the roller is prolonged. The strength is improved, the bearing limit can be improved, and the problem that the bearing capacity of an existing bearing is limited is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to planetary transmission technical field, more specifically, it is particularly related to the planetary wheel bearing of limit centrifugal force can be borne. BACKGROUND

[0002] The planetary gear is the matching gear between the sun gear and the outer gear, which is used for speed change and is an important part in gear transmission. The planetary gear is installed by fixed shaft and assembled by bearing to improve transmission effect. The planetary gear needs to bear centrifugal force, and generally adopts roller bearing to bear the centrifugal force to the maximum extent.

[0003] Based on the above, the bearing currently used needs to be separately assembled in the gear, and the bearing also needs to be composed of an inner ring, an outer ring, a retainer and a roller. The retainer needs to bear a certain load, and if the retainer fails, it will affect rotation, and the bearing effect is limited. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the utility model provides the planetary wheel bearing of limit centrifugal force can be borne to solve the problem that the existing bearing needs to be separately assembled in the gear, the bearing also needs to be composed of an inner ring, an outer ring, a retainer and a roller, the retainer needs to bear a certain load, and if the retainer fails, it will affect rotation, and the bearing effect is limited.

[0005] The purpose and effect of the planetary wheel bearing of limit centrifugal force can be borne of the utility model are achieved by the following specific technical means:

[0006] The planetary wheel bearing of limit centrifugal force can be borne, which comprises a toothed outer ring, the outer part of the toothed outer ring is a gear structure, and arc groove structures are symmetrically arranged at equal intervals on the inner side of the toothed outer ring; the number of composite inner rings is two groups, arc groove structures are symmetrically arranged at equal intervals on the outer side of the two groups of composite inner rings, the number of arc groove structures of the composite inner ring and the toothed outer ring is consistent, and the diameters of the arc groove structures of the two are consistent; cylindrical rollers are located between the arc groove structures of the composite inner ring and the toothed outer ring; the inner sides of the adjacent surfaces of the two groups of composite inner rings are provided with shoulder structures, and a connecting ring is fixedly arranged between the two groups of composite inner rings by interference fit.

[0007] Further, the inner side of the toothed outer ring is integrally provided with an inner tapered edge at the upper end and the lower end, and the inclined surface of the inner tapered edge faces the outer side of the toothed outer ring.

[0008] Further, the edge side of the composite inner ring is integrally provided with an outer tapered edge, and an oil injection groove is formed at the corner of the outer tapered edge.

[0009] Further, the outer tapered edge is located at the middle of the inner tapered edge, and the inner tapered edge does not contact the outer tapered edge.

[0010] Further, the outer part of the connecting ring is provided with a one-way tooth slot structure.

[0011] Further, the total height of the toothed outer ring and the two sets of composite inner rings is consistent with the height of the toothed outer ring.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The composite inner ring and the connecting ring provide a combined assembly function, and the two constitute an inner ring, and the inner side of the toothed outer ring is provided with a circular groove structure, which cooperates with the inner ring of the composite inner ring to form a retainer, replacing the original independent retainer, reducing a component, improving stability, and not needing a separate retainer to maintain the position of the roller, so that the strength is improved and the load limit can be improved.

[0014] The inner and outer tapered edges can cooperate to form a containment structure, the inner tapered edge can lock the position of the lubricating oil, the oil injection groove can inject lubricating oil, the lubricating oil enters the toothed outer ring through the gap between the inner and outer tapered edges, and in the subsequent rotation process of the toothed outer ring, the lubricating oil cannot be separated from the inner tapered edge, thereby achieving the effect of maintaining the lubrication of the bearing.

[0015] The one-way tooth slot structure outside the connecting ring can quickly throw away the lubricating oil that falls outside the connecting ring and directly throw it outside the cylindrical roller, thereby maintaining lubrication. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 is a schematic diagram of the installation position structure of the utility model.

[0018] Figure 3 is a schematic diagram of the split structure of the utility model.

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the toothed outer ring of the utility model.

[0020] Figure 5 is a schematic diagram of the assembly structure of the composite inner ring of the utility model.

[0021] In the drawings, the correspondence between the component names and the drawing numbers is as follows:

[0022] 1, toothed outer ring; 101, inner tapered edge; 2, composite inner ring; 201, outer tapered edge; 202, oil injection groove; 3, connecting ring; 4, cylindrical roller. DETAILED DESCRIPTION

[0023] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples.

[0024] Embodiment 1: as shown in the accompanying Figure 1 to the accompanying Figure 5 :

[0025] The utility model provides a planet wheel bearing of limit centrifugal force can bear, including tooth formula outer ring 1, tooth formula outer ring 1's outside is gear structure, and the inside of tooth formula outer ring 1 is equal interval and surrounds and is opened with circular slot structure, composite inner ring 2, the number of composite inner ring 2 is set to two groups, and the outside of two groups of composite inner ring 2 is equal interval and surrounds and is opened with circular slot structure, and the circular slot structure number of composite inner ring 2 and tooth formula outer ring 1 is identical, and the diameter of both circular slot structures is identical, cylindrical roller 4, cylindrical roller 4 is located between the circular slot structure of composite inner ring 2 and tooth formula outer ring 1, the adjacent face inside of two groups of composite inner ring 2 is set to shoulder platform structure, and two groups of composite inner ring 2 are fixedly provided with connecting ring 3 through interference fit between them.

[0026] Further, the inside of tooth formula outer ring 1 is integrally provided with inner taper edge 101 on the upper and lower ends, and the inclined surface of inner taper edge 101 faces the outside of tooth formula outer ring 1.

[0027] Further, the side of composite inner ring 2 is integrally provided with outer taper edge 201, and the corner of outer taper edge 201 is provided with oil injection groove 202.

[0028] Further, the outer taper edge 201 is located at the middle of the inner taper edge 101, and the inner taper edge 101 does not contact the outer taper edge 201.

[0029] Further, the outside of connecting ring 3 is provided with a one-way tooth groove structure.

[0030] Further, the total height of tooth formula outer ring 1 and two groups of composite inner ring 2 is consistent with the height of tooth formula outer ring 1.

[0031] As Figures 1-5 shown, first fill the cylindrical roller 4 to the inside of tooth formula outer ring 1, and place a group of composite inner ring 2 at the bottom of tooth formula outer ring 1 to assist positioning, then install connecting ring 3 above composite inner ring 2, install another group of composite inner ring 2 above connecting ring 3, and assemble them through interference fit;

[0032] Subsequently, install the sun gear and the outer gear, which can constitute a complete transmission mechanism to realize variable speed transmission; when lubricating oil is needed, rotate the outer taper edge 201 to keep the oil injection groove 202 above, and then inject oil from the oil injection groove 202; during the rotation of the tooth formula outer ring 1, the lubricating oil is maintained on the inner wall of the tooth formula outer ring 1 by centrifugal force, continuously contacting each group of cylindrical rollers 4 to provide lubricating effect, ensuring that the tooth formula outer ring 1 can bear the limit centrifugal force generated during transmission.

[0033] Example 2: Based on Example 1, such as Figure 2 As shown, the composite inner ring 2 and the connecting ring 3 can be positioned with the aid of a snap ring. A snap ring groove is opened on the outside of the planetary shaft, and the position of the composite inner ring 2 can be limited and fixed by installing the snap ring.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In this utility model, during assembly, the cylindrical rollers 4 are first filled into the inner side of the toothed outer ring 1, and a set of composite inner rings 2 are placed at the bottom of the toothed outer ring 1 for auxiliary positioning. Then, a connecting ring 3 is installed above the composite inner ring 2, and another set of composite inner rings 2 is installed above the connecting ring 3. The three are assembled by interference fit.

[0036] Then, according to Figure 2 In this state, the composite inner ring 2 and the connecting ring 3 are installed on the outside of the planetary shaft by interference fit, and a retaining circlip groove is opened on the outside of the planetary shaft to install the retaining circlip for limiting and fixing.

[0037] After installing the sun gear and external gear ring, a complete transmission mechanism can be formed to achieve variable speed transmission;

[0038] When lubricating oil needs to be added, rotate the outer cone edge 201 to keep the oil filling groove 202 on the top, and add oil from the oil filling groove 202; during the rotation of the toothed outer ring 1, the lubricating oil is maintained on the inner wall of the toothed outer ring 1 by centrifugal force, continuously contacting each set of cylindrical rollers 4 to provide lubrication effect, ensuring that the toothed outer ring 1 can withstand the ultimate centrifugal force generated during transmission.

[0039] The one-way toothed groove structure outside the connecting ring 3 can quickly throw off the lubricating oil that drips onto the outside of the connecting ring 3 and directly throw it onto the outside of the cylindrical roller 4 to maintain lubrication.

Claims

1. A planetary gear bearing capable of withstanding ultimate centrifugal force, characterized in that, include: The outer ring (1) has a gear structure on its outside and an arc groove structure is equally spaced around its inner side; the inner ring (2) has two sets of composite inner rings (2), and the outer sides of both sets of composite inner rings (2) are equally spaced around with arc groove structures. The number of arc groove structures in the composite inner ring (2) and the outer ring (1) are the same, and the diameter of the arc groove structures in both sets is also the same; the cylindrical roller (4) is located between the arc groove structure of the composite inner ring (2) and the outer ring (1); the inner sides of the adjacent surfaces of the two sets of composite inner rings (2) are both set with shoulder structures, and the two sets of composite inner rings (2) are fixedly provided with a connecting ring (3) by interference fit.

2. The planetary gear bearing capable of withstanding ultimate centrifugal force as described in claim 1, characterized in that: The inner upper and lower ends of the toothed outer ring (1) are integrally provided with an inner cone edge (101), and the inclined surface of the inner cone edge (101) faces the outer side of the toothed outer ring (1).

3. The planetary gear bearing capable of withstanding ultimate centrifugal force as described in claim 2, characterized in that: The outer conical flange (201) is integrally provided on the sides of the composite inner ring (2), and an oil injection groove (202) is provided at the corner of the outer conical flange (201).

4. The planetary gear bearing capable of withstanding ultimate centrifugal force as described in claim 3, characterized in that: The outer cone edge (201) is located in the middle of the inner cone edge (101), and the inner cone edge (101) does not contact the outer cone edge (201).

5. The planetary gear bearing capable of withstanding ultimate centrifugal force as described in claim 1, characterized in that: The connecting ring (3) has a one-way toothed groove structure on its outside.

6. The planetary gear bearing capable of withstanding ultimate centrifugal force as described in claim 1, characterized in that: The total height of the toothed outer ring (1) and the two sets of composite inner rings (2) is consistent with the height of the toothed outer ring (1).

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