Bearing of robot dog

Abstract

The utility model relates to the technical field of bearing machinery, in particular to a bearing of a robot dog. A joint of an existing robot dog adopts a crisscross bearing, and a crisscross bearing raceway is provided with a cracking opening and is not provided with a retainer, so that after the robot dog runs for a long time, the service life is relatively short, and the rigidity and the bending resistance cannot meet the expected requirements. The utility model discloses a bearing of a robot dog. A first outer ring and a second outer ring are doubly fastened by a fixing mechanism and a guide mechanism; a retainer with an inclined angle is arranged among the first outer ring, the second outer ring and the inner ring, a plurality of roller pins are arranged in the retainer, and the roller pins are of a double-row structure; the retainer main body is of a conical structure, the section of the retainer main body is of an approximately fusiform structure, and the roller pin grooves are of a quadrilateral structure; and at least one end among the first outer ring, the second outer ring and the inner ring is provided with a sealing mechanism. The retainer is reasonable in structure, the retainer of an approximate fusiform structure can work in a narrow space, and the special quadrangular structure increases the strength and reduces the layout of the space.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing mechanical technology field more specifically, a kind of bearing of robot dog. BACKGROUND

[0002] In the field of military, robot dog is not underestimated on the battlefield. They not only can improve combat efficiency and battlefield control ability, but also can reduce the casualties of soldiers and protect the safety of soldiers. At the same time, they can carry weapon systems, such as heavy machine gun, etc., and can attack enemy targets with firepower. In addition, they can carry ammunition, supplies, etc., to provide logistical support for front-line troops. With the continuous progress of technology, robot dog will play a more important role in future war. However, its working condition is relatively complex, and the existing joint of robot dog adopts cross roller bearing, which has a crack in the raceway, resulting in relatively short service life after long time running. At the same time, the cross roller bearing has no retainer, and its rigidity and bending resistance cannot meet the expected requirements. SUMMARY

[0003] The utility model aims at the deficiency of prior art, and provides a bearing of robot dog with reasonable structure, small friction torque and high motor efficiency.

[0004] A bearing of robot dog, comprising a first outer ring and a second outer ring, the first outer ring and the second outer ring are double-fastened by a fixing mechanism and a guide mechanism; an inner ring is arranged in the first outer ring and the second outer ring; a retainer with an inclined angle is arranged between the first outer ring, the second outer ring and the inner ring; a plurality of needle rollers are arranged in the retainer; the needle rollers are double-row structure; the main body of the retainer is a conical structure, and the cross section is approximately a shuttle-shaped structure; the needle roller groove is a quadrilateral structure, and an inclined angle D is arranged on one side of the quadrilateral; a sealing mechanism is arranged at least at one end between the first outer ring, the second outer ring and the inner ring.

[0005] The utility model has reasonable structure, is especially suitable for thin-walled structure of 1mm, the retainer with approximately shuttle-shaped structure can work in narrow space, the special quadrilateral structure increases the strength and reduces the layout of space, and the needle rollers are convenient to place and demould. The bearing has small friction torque, high motor efficiency and more than 30% improved rigidity, and the raceway has complete structure and long service life.

[0006] As further improvement and supplement to the above-mentioned scheme, the utility model further comprises the following additional technical features:

[0007] The retainer with inclined angle is arranged in a "V" shape. It has higher bending resistance and is more suitable for use of robot dog.

[0008] The inclined angle D of the cage is 30-60 degrees, and the material of the cage is PA46-GF30.

[0009] The sealing mechanism is a sealing strip and a blocking strip, the sealing strip is sleeved on the blocking strip, and the sealing strip is a multi-side sealing structure.

[0010] The material of the sealing strip is NBR.

[0011] The fixing mechanism is a fastener, and the guiding mechanism is a tapered positioning pin for controlling bearing accuracy.

[0012] The utility model discloses a bearing, which has the following beneficial effects: the utility model structure is reasonable, especially suitable for thin-wall structure of 1mm, and the cage with approximate shuttle-shaped structure can work in narrow space, and the special quadrilateral structure increases strength and reduces space layout, and the cage is convenient to place and convenient to demould. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the front view of the utility model.

[0014] Figure 2 is the A-A sectional view of the utility model. Figure 1

[0015] Figure 3 is the B-B sectional view of the utility model. Figure 1

[0016] Figure 4 is the local enlarged view of W of the utility model. Figure 2

[0017] Figure 5 is the local enlarged view of C of the utility model. Figure 3

[0018] Figure 6 is the front view of the cage 5 of the utility model.

[0019] Figure 7 is the sectional view of the cage 5 of the utility model.

[0020] Figure 8 is the local enlarged view of X of the utility model. Figure 7 DETAILED DESCRIPTION

[0021] ​​​​​The utility model discloses a bearing of a robot dog, which comprises a first outer ring 1 and a second outer ring 2.

[0022] As Figures 1-8 shown in the utility model discloses a bearing of a robot dog.

[0023] The bearing of the robot dog comprises a first outer ring 1 and a second outer ring 2, and the first outer ring 1 and the second outer ring 2 are symmetrical structures. The first outer ring 1 and the second outer ring 2 are fastened by a fixing mechanism and a guide mechanism. An inner ring 3 is arranged in the first outer ring 1 and the second outer ring 2. A retaining cage 5 with an inclined angle is arranged between the first outer ring 1, the second outer ring 2 and the inner ring 2. A plurality of needle rollers 4 are arranged in the retaining cage 5, and the needle rollers 4 are double-row structures. The retaining cage 5 is a conical structure, and the cross section of the retaining cage 5 is approximately a shuttle-shaped structure. The needle roller groove is a quadrilateral structure, and an inclined angle D is arranged on one side of the quadrilateral structure. The retaining cage with the approximately shuttle-shaped structure can work in a narrow space. A sealing mechanism 6 is arranged at least at one end between the first outer ring 1, the second outer ring 2 and the inner ring 3. The first outer ring 1 and the second outer ring 2 are concave structures, and the inner ring 3 is a convex structure, which is matched with the retaining cage 5, has good rigidity, high bending resistance and is suitable for use of the robot dog.

[0024] Further, the retaining cage 5 with the inclined angle is arranged in a "V" shape.

[0025] Further, the inclined angle D of the retaining cage 5 is 30-60 degrees, and the two different directions of the inclined angle D are arranged. In the embodiment, the plane of the other angle is parallel to the inner hole surface of the inner cavity of the same end, and the material of the retaining cage 5 is PA46-GF30.

[0026] Further, the sealing mechanism 6 comprises a sealing strip 61 and a blocking strip 62. The sealing strip 61 is sleeved on the blocking strip 62, and the sealing strip 61 is a multi-side sealing structure. In the embodiment, the number of the sealing mechanism 6 is two. The material of the blocking strip 62 is metal, and the blocking strip 62 is arranged in an L shape, which can effectively support the sealing strip 61. The sealing strip 61 is sealed on both sides of the inner ring 2, and one side of the first outer ring 1 and the second outer ring 2, which can effectively prevent dust, oil stains and the like from entering the inner side of the bearing.

[0027] Further, the material of the sealing strip 61 is NBR.

[0028] Further, the fixing mechanism is a fastener 8, and the guide mechanism is a tapered positioning pin 7 used for controlling the precision of the bearing. In the embodiment, the fastener is a bolt, and a connection structure in which one side of the first outer ring or the second outer ring is sunk is adopted. The positioning pin 7 is effectively positioned, and is fastened by the bolt, which can effectively ensure the rigidity and the precision of the bearing.

[0029] The above is the preferred embodiment of the present application, and does not limit the protection scope of the present application. Any deformation and improvement made by the skilled in the art according to the design idea of the present application should be considered within the protection scope of the present application.

Claims

1. A bearing of a robot dog, comprising a first outer ring (1) and a second outer ring (2), characterized in that: The first outer ring (1) and the second outer ring (2) are fastened by a fixing mechanism and a guiding mechanism; the first outer ring (1) and the second outer ring (2) are internally provided with an inner ring (3); the first outer ring (1), the second outer ring (2) and the inner ring (3) are provided with a retaining cage (5) with an oblique angle; the retaining cage (5) is internally provided with a plurality of needle rollers (4); the needle rollers (4) are double-row structures; the main body of the retaining cage (5) is provided in a conical structure, and the cross section of the main body is provided in a nearly shuttle-shaped structure; the needle roller groove is a quadrilateral structure, and one side of the quadrilateral structure is provided with an oblique angle D structure; at least one end between the first outer ring (1), the second outer ring (2) and the inner ring (3) is provided with a sealing mechanism (6).

2. The machine dog's bearing as claimed in claim 1, wherein: The oblique angle of the retaining cage (5) is provided in a "V" shape.

3. The machine dog's bearing as claimed in claim 1, wherein: The oblique angle D of the retaining cage (5) is 30-60 degrees, and the material of the retaining cage (5) is PA46-GF30.

4. The machine dog's bearing as claimed in claim 1, wherein: The sealing mechanism (6) is a sealing strip (61) and a blocking strip (62); the sealing strip (61) is sleeved on the blocking strip (62); and the sealing strip (61) is a multi-side sealing structure.

5. The machine dog's bearing according to claim 4, wherein: The material of the sealing strip (61) is NBR.

6. The machine dog's bearing according to any one of claims 1 to 5, wherein: The fixing mechanism is a fastener (8), and the guiding mechanism is a tapered positioning pin (7) for controlling bearing accuracy.

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