Arc-shaped guide rail bearing

Abstract

The utility model discloses an arc-shaped guide rail bearing which comprises a bearing body, a connecting mechanism is installed in the middle of the interior of the bearing body, limiting mechanisms are symmetrically arranged on the outer side of the bearing body, each limiting mechanism comprises a fixed bottom frame, a compression spring, a limiting frame and a ball body, and each bottom frame is of a U-shaped hollow structure. The compression spring is fixed in the bottom frame, one end of the compression spring is fixedly connected with the limiting frame, the limiting frame is of an L-shaped structure, and the ball body is connected with the limiting frame in a rolling mode. By arranging the limiting mechanism, when the bearing is installed on the external guide rail through the groove in the outer shaft, the limiting frame in the limiting mechanism can abut against the external guide rail, at the moment, the limiting frame is stressed to stretch the compression spring, and the ball on the limiting frame is tightly connected with the external guide rail through the counter-acting force of the compression spring; therefore, the bearing can be prevented from shaking on the vertical plane, and the stability of the moving mechanism during moving is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of arc guide rail bearings, in particular to an arc guide rail bearing. Background Art

[0002] Arc guide bearings are a type of bearing specially designed to support and guide linear motion. They are typically used in applications requiring high precision and high load capacity. Arc guide bearings have become an important component of modern mechanical equipment due to their excellent performance and adaptability.

[0003] During use, the existing arc guide bearings can effectively avoid the need to add lubricating oil multiple times by using arc guide bearings to replace the rolling mechanism in the original moving mechanism. However, during use, the arc guide bearings are connected to the external guide rail through the arc groove on its outer shaft. During movement, the connection stability between the outer shaft with an arc cross-section and the external guide rail is poor, which can easily cause the moving mechanism to shake, thereby reducing the stability of the moving mechanism. Utility Model Content

[0004] The main purpose of the utility model is to provide an arc-shaped guide rail bearing.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A curved guide rail bearing comprises a bearing body, a connecting mechanism is installed in the middle part of the bearing body, a limiting mechanism is symmetrically arranged on the outside of the bearing body, the limiting mechanism comprises a fixed base frame, a compression spring, a limiting frame and a sphere, the base frame is a U-shaped hollow structure, the compression spring is fixed in the base frame, one end of the compression spring is fixedly connected to the limiting frame, and the limiting frame is an L-shaped structure, and the sphere is rollingly connected to the limiting frame.

[0007] Preferably, the bearing body includes an outer shaft, balls, a retaining frame and an inner shaft, and arc grooves are formed on opposite sides of the outer shaft and the inner shaft.

[0008] Preferably, the balls are rollingly connected to the retaining frame, and outer sides of the balls are in contact with the outer shaft and the inner shaft.

[0009] Preferably, the connecting mechanism includes a connecting seat fixedly connected to the inner shaft, and a connecting hole is opened in the middle of the connecting seat.

[0010] Preferably, a groove is provided in the middle portion of the outer side of the outer shaft, and the groove is an arc-shaped structure.

[0011] Preferably, the outer shaft and the inner shaft have the same width, sealing plates are symmetrically connected between the inner shaft and the outer shaft, and the sealing plates are rotatably connected to the inner shaft and the outer shaft.

[0012] Preferably, a spherical groove for supporting the sphere is provided on the limiting frame.

[0013] The beneficial technical effects are:

[0014] By setting up a limit mechanism, when the bearing is installed on the external guide rail through the groove on the outer shaft, the limit frame in the limit mechanism can be against the external guide rail. At this time, the limit frame is subjected to force to stretch the compression spring, and the reaction force of the compression spring makes the ball on the limit frame tightly connected to the external guide rail, thereby preventing the bearing from shaking on the vertical plane and ensuring the stability of the moving mechanism during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of a preferred embodiment of an arc guide bearing according to the present utility model;

[0016] Figure 2 It is a main cross-sectional view of a preferred embodiment of an arc-shaped guide rail bearing according to the utility model;

[0017] Figure 3 It is an enlarged view of point A in a preferred embodiment of an arc guide bearing according to the present utility model.

[0018] The following are the descriptions of the reference numerals:

[0019] 1. Bearing body; 101. Outer shaft; 102. Ball; 103. Cage; 104. Inner shaft; 2. Connecting mechanism; 201. Connecting seat; 202. Connecting hole; 3. Limiting mechanism; 301. Base frame; 302. Compression spring; 303. Limiting frame; 304. Ball; 4. Groove; 5. Sealing plate. DETAILED DESCRIPTION

[0020] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is described in further detail below with reference to embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0021] like Figure 1-Figure 3As shown, an arc guide bearing provided in this embodiment includes a bearing body 1, a connecting mechanism 2 is installed in the middle part of the bearing body 1, and a limiting mechanism 3 is symmetrically arranged on the outside of the bearing body 1. The limiting mechanism 3 includes a fixed base frame 301, a compression spring 302, a limiting frame 303 and a ball 304. The base frame 301 has a U-shaped hollow structure, which is convenient for guiding the limiting frame 303 through the base frame 301. The compression spring 302 is fixed in the base frame 301, and a reaction force can be applied to the limiting frame 303 through the compression spring 302. One end of the compression spring 302 is fixedly connected to the limiting frame 303, and the limiting frame 303 is an L-shaped structure. The ball 304 is rollingly connected to the limiting frame 303, and the ball 304 can be offset against the external guide rail, which can not only ensure the stability of the bearing, but also ensure the smoothness of the bearing during rotation.

[0022] like Figure 1-Figure 3 As shown, the bearing body 1 includes an outer shaft 101, balls 102, a retaining frame 103 and an inner shaft 104. Arc grooves are provided on opposite sides of the outer shaft 101 and the inner shaft 104 to facilitate limiting the balls 102 through the arc grooves on the outer shaft 101 and the inner shaft 104.

[0023] like Figure 1-Figure 3 As shown, the ball 102 is rollingly connected to the retaining frame 103, and the outer sides of the ball 102 are against the outer shaft 101 and the inner shaft 104, so that the ball 102 can be limited by the retaining frame 103.

[0024] like Figure 1-Figure 3 As shown, the connecting mechanism 2 includes a connecting seat 201 fixedly connected to the inner shaft 104, and a connecting hole 202 is opened in the middle of the connecting seat 201 to facilitate the connection of the connecting shaft of the external device to the connecting seat 201 through the connecting hole 202, and then to the bearing body 1.

[0025] like Figure 1-Figure 3 As shown, a groove 4 is provided in the middle of the outer side of the outer shaft 101 , and the groove 4 is an arc-shaped structure, which facilitates the outer shaft 101 to be clamped on the outer guide rail through the groove 4 .

[0026] like Figure 1-Figure 3 As shown, the outer shaft 101 and the inner shaft 104 have the same width, and a sealing plate 5 is symmetrically connected between the inner shaft 104 and the outer shaft 101, and the sealing plate 5 is rotatably connected to the inner shaft 104 and the outer shaft 101. The sealing plate 5 can prevent foreign matter from entering the retaining frame 103 and the ball 102, thereby reducing the wear of the bearing body 1.

[0027] like Figure 1-Figure 3 As shown, a spherical groove for carrying the ball 304 is opened on the limiting frame 303, which facilitates the limiting frame 303 to carry and install the ball 304.

[0028] The working principle of this device: When this device is in use, the connecting shaft of the external device is connected to the connecting seat 201 through the connecting hole 202, and then connected to the bearing body 1. When the external moving mechanism moves along the guide rail, the outer shaft 101 is stuck on the external guide rail through the groove 4 to guide the moving mechanism, and the sealing plate 5 can prevent debris from entering the retaining frame 103 and the ball 102, thereby reducing the wear of the bearing body 1. At the same time, the limit frame 303 in the limiting mechanism 3 can be against the external guide rail. At this time, the limit frame 303 is subjected to force to stretch the compression spring 302, and the reaction force of the compression spring 302 makes the ball 304 on the limit frame 303 tightly connected to the external guide rail, thereby preventing the bearing from shaking on the vertical plane and ensuring the stability of the moving mechanism when moving. The ball 304 can not only ensure the stability of the bearing, but also ensure the smoothness of the bearing when rotating.

[0029] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention based on the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. An arc guide bearing, characterized in that: The invention comprises a bearing body (1), a connecting mechanism (2) is installed in the middle of the bearing body (1), a limiting mechanism (3) is symmetrically arranged on the outside of the bearing body (1), the limiting mechanism (3) comprises a fixed base (301), a compression spring (302), a limiting frame (303) and a sphere (304), the base (301) is a U-shaped hollow structure, the compression spring (302) is fixed in the base (301), one end of the compression spring (302) is fixedly connected to the limiting frame (303), and the limiting frame (303) is an L-shaped structure, and the sphere (304) is rollingly connected to the limiting frame (303).

2. The arc guide bearing according to claim 1, characterized in that: The bearing body (1) comprises an outer shaft (101), balls (102), a retaining frame (103) and an inner shaft (104); arc grooves are provided on opposite sides of the outer shaft (101) and the inner shaft (104).

3. The arc guide bearing according to claim 2, characterized in that: The balls (102) are rollingly connected to the retaining frame (103), and the outer sides of the balls (102) are in contact with the outer shaft (101) and the inner shaft (104).

4. The arc guide bearing according to claim 3, characterized in that: The connecting mechanism (2) comprises a connecting seat (201) fixedly connected to the inner shaft (104), and a connecting hole (202) is provided in the middle of the connecting seat (201).

5. The arc guide bearing according to claim 4, characterized in that: A groove (4) is provided in the middle of the outer side of the outer shaft (101), and the groove (4) is an arc-shaped structure.

6. The arc guide bearing according to claim 5, characterized in that: The outer shaft (101) and the inner shaft (104) have the same width, a sealing plate (5) is symmetrically connected between the inner shaft (104) and the outer shaft (101), and the sealing plate (5) is rotatably connected to the inner shaft (104) and the outer shaft (101).

7. The arc guide bearing according to claim 6, characterized in that: The limiting frame (303) is provided with a spherical groove for carrying the sphere (304).

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