Assembly for measuring air tightness of crossed roller bearing

Abstract

The utility model discloses an assembly for measuring the air tightness of a crossed roller bearing, which relates to the technical field of bearing detection, and comprises a measuring gland and a measuring pressure plate, and the measuring pressure plate is provided with a first fixing piece; the measuring gland is provided with an air pipe access port and a second fixing piece; when the device is used, the measuring pressing plate is installed on the side face of a bearing inner ring through the first fixing piece, the measuring gland is installed on the side face of a bearing outer ring through the second fixing piece, then the air pipe is connected to the air pipe access port, the whole device is placed in gasoline, and air is introduced into the closed cavity through the air pipe. And observing whether bubbles appear at the joint of one side, far away from the measuring pressure plate, between the bearing inner ring and the bearing outer ring and at a gap on the bearing outer ring, if bubbles appear, indicating that the air tightness is poor, and if no bubbles appear, indicating that the air tightness is relatively good, thereby completing the air tightness detection of the crossed roller bearing, and being very convenient and relatively low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing detection, in particular to a component used for measuring the air tightness of a cross roller bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] Crossed roller bearings are a type of bearing, a special type of bearing with a split inner ring and a rotating outer ring. Due to its special structure, it is often used as a spherical bearing in industrial robots.

[0004] In order to prevent dust, moisture and other impurities from entering the bearing and to prevent the loss of lubricant in the bearing, it is necessary to ensure the air tightness between the inner ring and the outer ring of the crossed roller bearing. In the prior art, when testing the air tightness of the crossed roller bearing, a bearing air tightness tester is generally used for testing. Although the air tightness of the bearing can be detected, the tester is large in size and expensive, and is not suitable for small-batch bearing testing.

[0005] In view of this, there is an urgent need for a component for measuring the air tightness of a crossed roller bearing. Summary of the invention

[0006] Aiming at the problem in the prior art that the energized carbon brushes are seriously worn and the energized stability is poor due to long-term use, the utility model solves this problem with the following technical structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A component for measuring the air tightness of a crossed roller bearing, comprising: a measuring gland and a measuring platen, wherein the diameter of the measuring platen is adapted to the outer diameter of the inner ring of the bearing, and the measuring platen is provided with a first fixing member for attaching the measuring platen to one side of the inner ring of the bearing;

[0009] A mounting groove is provided at the bottom of the measuring gland, the outer diameter of the measuring gland is adapted to the outer diameter of the bearing outer ring, an air pipe access port is provided on the measuring gland, the air pipe access port is connected to the mounting groove, and a second fixing piece is provided on the measuring gland to fit the measuring gland to one side of the bearing outer ring.

[0010] A further feature is that

[0011] A first sealing ring is arranged on one side of the measuring pressure plate close to the inner ring of the bearing.

[0012] A first annular groove matched with a first sealing ring is formed on one side of the measuring pressure plate close to the inner ring of the bearing.

[0013] A second sealing ring is arranged on one side of the measuring gland close to the outer ring of the bearing.

[0014] A second annular groove matched with a second sealing ring is arranged on one side of the measuring gland close to the outer ring of the bearing.

[0015] The first fixing member includes a plurality of first screw rods, and the measuring platen is provided with a plurality of first bolt holes adapted to the first screw rods.

[0016] The second fixing member includes a plurality of second screw rods, and the measuring gland is provided with a plurality of second bolt holes adapted to the second screw rods.

[0017] When the measuring pressure cover and the measuring pressure plate are placed on the same side of the bearing inner ring, a gap is left between the measuring pressure cover and the measuring pressure plate.

[0018] The measuring gland is made of rubber.

[0019] The measuring pressure plate is made of rubber.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] When in use, the measuring pressure plate is installed on the side of the inner ring of the bearing through the first fixing part, and the measuring pressure cover is installed on the side of the outer ring of the bearing through the second fixing part. The measuring pressure cover and the measuring pressure plate are arranged on the same side, and the measuring pressure plate is placed in the installation groove of the measuring pressure cover. At this time, a closed cavity is formed between the measuring pressure plate and the measuring pressure cover, and then the air pipe is connected to the air pipe access port, and then the whole is placed in gasoline, and air is ventilated into the closed cavity through the air pipe to observe whether bubbles appear at the connection between the inner ring of the bearing and the outer ring of the bearing away from the measuring pressure plate and the gap on the outer ring of the bearing. If bubbles appear, it indicates that the air tightness is poor. If no bubbles appear, it indicates that the air tightness is good, thereby completing the air tightness detection of the cross roller bearing. This method does not require the use of an air tightness detector to complete the air tightness detection of the bearing, which is very convenient and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of this embodiment.

[0023] In the figure: 1. measuring gland; 11. mounting groove; 12. air pipe access port; 2. measuring pressure plate; 3. first sealing ring; 4. second sealing ring; 5. first screw; 6. second screw. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0026] The following is combined with Figure 1 This application is described in further detail.

[0027] Example 1, reference Figure 1 The assembly shown in the figure for measuring the air tightness of a crossed roller bearing comprises: a measuring gland 1 and a measuring platen 2, wherein the diameter of the measuring platen 2 matches the outer diameter of the inner ring of the bearing, and the measuring platen 2 is provided with a first fixing member for fitting the measuring platen 2 to one side of the inner ring of the bearing; a mounting groove 11 is provided at the bottom of the measuring gland 1, and the outer diameter of the measuring gland 1 matches the outer diameter of the outer ring of the bearing, and the measuring gland 1 is provided with an air pipe access port 12, which is connected with the mounting groove 11, and the measuring gland 1 is provided with a second fixing member for fitting the measuring gland 1 to one side of the outer ring of the bearing, so that when in use, through the first The measuring pressure plate 2 is mounted on the side of the inner ring of the bearing by a fixing part, and the measuring gland 1 is mounted on the side of the outer ring of the bearing by a second fixing part. The measuring gland 1 and the measuring pressure plate 2 are arranged on the same side, and the measuring pressure plate 2 is placed in the mounting groove 1 of the measuring gland 1. At this time, a closed cavity is formed between the measuring pressure plate 2 and the measuring gland 1 (the top of the connection between the inner ring of the bearing and the outer ring of the bearing is located in the closed cavity), and then the air pipe is connected to the air pipe access port 12, and then the whole is placed in gasoline, and air is ventilated into the closed cavity through the air pipe, and the bottom of the connection between the inner ring of the bearing and the outer ring of the bearing away from the measuring pressure plate 2 is observed (such as Figure 1 The position indicated by the middle number 7) and the gap on the outer ring of the bearing (such as Figure 1 Whether bubbles appear at the position indicated by the middle label number 8), if bubbles appear, it means that the air tightness is poor, if no bubbles appear, it means that the air tightness is good, thereby completing the air tightness test of the cross roller bearing. This method does not require the use of an air tightness tester to complete the air tightness test of the bearing, which is very convenient and low in cost.

[0028] refer to Figure 1 As shown, in order to improve the sealing between the measuring pressure plate 2 and the bearing inner ring, a first sealing ring 3 is arranged on the side of the measuring pressure plate 2 close to the bearing inner ring, and in order to facilitate the installation of the first sealing ring 3, a first annular groove adapted to the first sealing ring 3 is opened on the side of the measuring pressure plate 2 close to the bearing inner ring for installing the first sealing ring 3, thereby improving the detection efficiency and sealing.

[0029] refer to Figure 1 As shown, in order to improve the sealing between the measuring gland 1 and the bearing outer ring, a second sealing ring 4 is provided on the side of the measuring gland 1 close to the bearing outer ring, and in order to facilitate the installation of the second sealing ring 4, a second annular groove adapted to the second sealing ring 4 is provided on the side of the measuring gland 1 close to the bearing outer ring for installing the second sealing ring 4, thereby improving the detection efficiency and sealing.

[0030] refer to Figure 1 As shown, in order to facilitate the installation of the measuring pressure plate 2 on the inner ring of the bearing, the first fixing member includes a plurality of first screws 5, and a plurality of first bolt holes adapted to the first screws 5 are opened on the measuring pressure plate 2. In this way, the measuring pressure plate 2 is installed on one side of the inner ring of the bearing (a threaded hole is pre-opened on one side of the inner ring of the bearing) through the first screws 5.

[0031] refer to Figure 1 As shown, in order to facilitate the installation of the measuring pressure cover 1 on the outer ring of the bearing, the second fixing member includes a plurality of second screws 6, and a plurality of second bolt holes adapted to the second screws 6 are opened on the measuring pressure cover 1. In this way, the measuring pressure cover 1 is installed on one side of the outer ring of the bearing (a threaded hole is pre-opened on one side of the outer ring of the bearing) through the second screws 6.

[0032] refer to Figure 1 As shown, when the measuring gland 1 and the measuring pressure plate 2 are placed on the same side of the bearing inner ring, a gap is left between the measuring gland 1 and the measuring pressure plate 2. An air passage can also be opened on the inner side of the measuring gland 1, so that the gas introduced from the air pipe inlet 12 can flow to the joint between the bearing outer ring and the bearing inner ring.

[0033] As a further optimization, both the measuring gland 1 and the measuring platen 2 can be made of rubber material, so as to further improve the fit and sealing between the measuring gland 1 and the outer ring of the bearing and between the measuring platen 2 and the inner ring of the bearing.

[0034] In summary, when in use, the measuring pressure plate 2 is installed on the side of the inner ring of the bearing through the first fixing part, and the measuring pressure cover 1 is installed on the side of the outer ring of the bearing through the second fixing part. The measuring pressure cover 1 and the measuring pressure plate 2 are arranged on the same side, and the measuring pressure plate 2 is placed in the installation groove 1 of the measuring pressure cover 1. At this time, a closed cavity is formed between the measuring pressure plate 2 and the measuring pressure cover 1, and then the air pipe is connected to the air pipe access port 12, and then the whole is placed in gasoline, and air is ventilated into the closed cavity through the air pipe to observe whether bubbles appear at the connection between the inner ring of the bearing and the outer ring of the bearing away from the measuring pressure plate 2 and the gap on the outer ring of the bearing. If bubbles appear, it indicates that the air tightness is poor. If no bubbles appear, it indicates that the air tightness is good, thereby completing the air tightness detection of the cross roller bearing. This method does not require the use of an air tightness detector to complete the air tightness detection of the bearing, which is very convenient and low in cost.

[0035] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A component for measuring the air tightness of a crossed roller bearing, characterized in that: include: A measuring gland (1) and a measuring pressure plate (2), wherein the diameter of the measuring pressure plate (2) is adapted to the outer diameter of the inner ring of the bearing, and the measuring pressure plate (2) is provided with a first fixing member for attaching the measuring pressure plate (2) to one side of the inner ring of the bearing; The bottom of the measuring gland (1) is provided with a mounting groove (11), the outer diameter of the measuring gland (1) is adapted to the outer diameter of the bearing outer ring, the measuring gland (1) is provided with an air pipe access port (12), the air pipe access port (12) is connected with the mounting groove (11), and the measuring gland (1) is provided with a second fixing member for attaching the measuring gland (1) to one side of the bearing outer ring.

2. The component for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: A first sealing ring (3) is arranged on one side of the measuring pressure plate (2) close to the inner ring of the bearing.

3. The component for measuring the air tightness of a crossed roller bearing according to claim 2, characterized in that: A first annular groove adapted to the first sealing ring (3) is provided on one side of the measuring pressure plate (2) close to the inner ring of the bearing.

4. The assembly for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: A second sealing ring (4) is provided on one side of the measuring gland (1) close to the outer ring of the bearing.

5. The assembly for measuring the air tightness of a crossed roller bearing according to claim 4, characterized in that: A second annular groove adapted to the second sealing ring (4) is provided on one side of the measuring gland (1) close to the outer ring of the bearing.

6. The assembly for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: The first fixing member comprises a plurality of first screw rods (5), and the measuring pressure plate (2) is provided with a plurality of first bolt holes adapted to the first screw rods (5).

7. The assembly for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: The second fixing member comprises a plurality of second screw rods (6), and the measuring gland (1) is provided with a plurality of second bolt holes adapted to the second screw rods (6).

8. The assembly for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: When the measuring pressure cover (1) and the measuring pressure plate (2) are placed on the same side of the inner ring of the bearing, a gap is left between the measuring pressure cover (1) and the measuring pressure plate (2).

9. The assembly for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: The measuring gland (1) is made of rubber.

10. The assembly for measuring the air tightness of a crossed roller bearing according to claim 1, characterized in that: The measuring pressure plate (2) is made of rubber.

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