Air floatation shaft sleeve

Abstract

The utility model discloses an air floating shaft sleeve, which comprises a shaft sleeve part, an air floating part and an air floating part, and is characterized in that the shaft sleeve part comprises a shaft sleeve body; the air inlet connector part comprises a hollow pipe, a threaded column, an annular frame, a movable spring and an annular plate; the threaded column fixedly extends into the middle of the hollow pipe, the annular frame is connected to the outer edge of the front face of the hollow pipe in a sleeving mode, one ends of the movable springs are fixedly connected to the inner end of the middle of the front face of the annular frame at equal intervals, the other ends of the movable springs are fixedly connected with the inner side of the annular plate, and a cavity is formed in the middle of the threaded column. The utility model relates to an air bearing, in particular to an air bearing, and aims to solve the problems that when an existing air bearing is used, the air bearing is connected with external air supply equipment in a threaded connection mode, although the connection tightness is ensured, part of threads are exposed in the external environment in the process of telescopic adjustment of the threads, and after the threads are polluted by the outside, the spiral operation is blocked by adhered impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of air floating bearings, in particular to an air floating shaft sleeve. Background Art

[0002] Air bearings, also known as air bearings, are sliding bearings that use gas (usually air) as a lubricant. The working principle is to form a pressure gas film between two precision-machined surfaces, using this gas film to support the load and achieve smooth movement.

[0003] However, it still has the following disadvantages in actual use:

[0004] In the use of existing air bearings, a threaded connection is used to connect with external air supply equipment. Although the tightness of the connection is guaranteed, part of the thread will be exposed to the external environment during the process of thread expansion and contraction adjustment. After the thread is contaminated by the outside world, the adhered impurities will cause the spiral operation to be obstructed. Utility Model Content

[0005] The purpose of the utility model is to provide an air-floating sleeve to solve the problem raised in the above-mentioned background technology that, in the use of existing air-floating bearings, a threaded connection method is used to connect with an external air supply device. Although the tightness of the connection is guaranteed, during the process of thread expansion and contraction adjustment, part of the thread will be exposed to the external environment. After the thread is contaminated by the outside world, the adhered impurities will cause the spiral operation to be obstructed.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is an air-floating sleeve, comprising:

[0008] A sleeve portion, the sleeve portion comprising a sleeve body;

[0009] An air inlet joint part, comprising a hollow tube, a threaded column, a ring frame, a movable spring, and a ring plate;

[0010] The threaded column is fixedly extended into the middle of the hollow tube, and the ring frame is sleeved and connected to the outer edge of the front face of the hollow tube, one end of the movable spring is equidistantly fixedly connected to the inner end of the middle of the front face of the ring frame, and the other end of the movable spring is fixedly connected to the inner side of the ring plate, and the middle of the threaded column is set as a cavity.

[0011] Furthermore, a buckle is fixedly connected to the middle of the back side of the hollow tube, and the buckle is buckled in the cavity, and the buckle cavity is opened in one side of the outer surface of the sleeve body.

[0012] Furthermore, the shaft sleeve portion also includes an air inlet, an air outlet, and a sealing plug;

[0013] The air inlets are equidistantly connected and opened in the middle of the front side of the sleeve body, and the sealing plug is sealed in the end of the air inlet. The air outlets are equidistantly connected and arranged between adjacent air inlets.

[0014] Furthermore, a second guide port is provided at a front portion of the inner side wall of the sleeve body and is equidistantly connected to the air inlet, and a first guide port is provided inside the inner side of the second guide port and is connected to the air outlet.

[0015] Furthermore, it also includes a receiving portion, and the receiving portion includes a receiving tube and a limiting rope;

[0016] The receiving tube is threadedly connected to the outer side of one end of the threaded column, and the ends of the limiting rope are respectively fixedly connected to the upper side of the ring frame and the outer surface of the receiving tube.

[0017] Furthermore, the limiting rope is made of rubber, and thread grooves are equidistantly arranged on the inner wall of the receiving tube.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The utility model adopts a threaded connection method and adds a ring frame structure. The ring plate is connected to the inside of the ring frame through a movable spring. The ring plate contacts one end of the receiving tube. Relying on the elastic force of the movable spring, the ring plate can be extended and retracted autonomously and always fits one end of the receiving tube during the spiral operation between the receiving tube and the threaded column. The ring frame always shields the exposed thread groove from the outside to avoid contamination affecting the spiral operation.

[0020] Based on the above beneficial effects, during the spiral operation of the receiving pipe, since the ends of the limiting rope are respectively fixed to the receiving pipe and the outer surface of the ring frame, the receiving pipe that is detached from the threaded column can be limited during the spiral operation of the receiving pipe to prevent it from falling to the ground and being damaged or lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is the appearance diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the air intake joint part and the receiving part of the utility model;

[0024] Figure 3 It is a schematic diagram of the shaft sleeve portion of the utility model;

[0025] Figure 4 This is a schematic diagram of the installation of the ring plate of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 11. Bushing body; 12. Air inlet; 13. Air outlet; 14. Sealing plug; 15. First guide port; 16. Second guide port; 21. Buckle; 22. Hollow tube; 23. Threaded column; 24. Ring frame; 25. Movable spring; 26. Ring plate; 31. Receiver tube; 32. Limiting rope. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1-4 As shown, this embodiment is an air-floating sleeve, comprising:

[0032] A sleeve portion, the sleeve portion includes a sleeve body 11;

[0033] The sleeve body 11 is the main mounting carrier of the sleeve part and provides external protection capability;

[0034] The shaft sleeve part also includes an air inlet 12, an air outlet 13, and a sealing plug 14;

[0035] The air inlets 12 are equidistantly connected and opened in the middle of the front of the sleeve body 11, and the sealing plug 14 is sealed in the end of the air inlet 12, and the air outlets 13 are equidistantly connected and arranged between adjacent air inlets 12;

[0036] The gas is introduced into the gas inlet 12, and the gas outlet 13 is used to lead out the introduced gas. The sealing plug 14 is used to seal the end of the gas inlet 12 to prevent the introduced gas from leaking.

[0037] A second guide opening 16 is formed at an equal distance from the front of the inner wall of the sleeve body 11 to communicate with the air inlet 12, and a first guide opening 15 is formed inside the inner wall of the second guide opening 16 to communicate with the air outlet 13;

[0038] The first guide port 15 and the second guide port 16 serve as air outlet and air inlet guides respectively;

[0039] The air inlet joint part includes a hollow tube 22, a threaded column 23, a ring frame 24, a movable spring 25, and a ring plate 26;

[0040] The threaded column 23 is fixedly extended to the middle of the hollow tube 22, and the ring frame 24 is sleeved and connected to the outer edge of the front of the hollow tube 22, one end of the movable spring 25 is equidistantly fixedly connected to the inner end of the middle of the front of the ring frame 24, and the other end of the movable spring 25 is fixedly connected to the inner side of the ring plate 26, and the middle of the threaded column 23 is set as a cavity;

[0041] The hollow tube 22 is used to install and fix the threaded column 23, and the threaded column 23 is used to install the following receiving tube 31 for connection with external air supply equipment. The ring frame 24 is used to install the movable spring 25 and provide a telescopic activity space for the ring plate 26. The telescopic ring plate 26 can always cover the exposed thread groove to avoid external pollution.

[0042] A buckle head 21 is fixedly connected to the middle of the back of the hollow tube 22, and the buckle head 21 is buckled and connected to the buckle cavity 17. The buckle cavity 17 is opened in one side of the outer surface of the sleeve body 11;

[0043] The connection between the buckle head 21 and the buckle cavity 17 satisfies the installation between the sleeve body 11 and the external air supply equipment, and the threaded connection is convenient for disassembly and assembly;

[0044] Working principle: After sealing the ends of multiple air inlets 12 with sealing plugs 14, the hollow tube 22 is structurally installed through the connection of the buckle head 21 and the buckle cavity 17, and the receiving tube 31 is inserted into one end of the threaded column 23. After applying the spiral tightening force, the receiving tube 31 and the threaded column 23 are installed, so that the external air supply equipment can supply air to the inside of the sleeve body 11;

[0045] In the process of applying the spiral force to the receiving tube 31, one end of the receiving tube 31 is always in contact with the ring plate 26, and the ring plate 26 can be adjusted to be telescopic by the elastic force of the movable spring 25, so as to cover the threaded column 23 and expose the thread groove;

[0046] This solution satisfies the requirement of always shielding the exposed thread groove on the thread column 23, thereby preventing the thread from being contaminated by the outside world and affecting the spiral operation, and is convenient for use.

[0047] See also Figure 1-4 As shown, this embodiment is based on the above embodiment 1 and further includes a receiving portion, and the receiving portion includes a receiving tube 31 and a limiting rope 32;

[0048] The receiving tube 31 is threadedly connected to the outer side of one end of the threaded column 23, and the ends of the limiting rope 32 are respectively fixedly connected to the upper side of the ring frame 24 and the outer surface of the receiving tube 31;

[0049] The limit rope 32 is made of rubber, and the inner wall of the receiving tube 31 is provided with thread grooves at equal intervals;

[0050] The receiving tube 31 is matched with the threaded groove to meet the installation between the threaded column 23, and the external air supply equipment is installed with the shaft sleeve body 11. The threaded connection is convenient for disassembly and assembly. The limiting rope 32 limits the receiving tube 31 to provide a limiting protection against falling off.

[0051] Working principle: During the above-mentioned spiral operation of the receiving pipe 31 and the threaded column 23, if the receiving pipe 31 accidentally detaches from the threaded column 23, the limiting rope 32 will limit the falling of the detached receiving pipe 31;

[0052] This solution can prevent the receiving pipe 31 from falling to the ground and being damaged or lost, thus meeting the use requirements.

[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air-floating sleeve, characterized in that: include: A shaft sleeve portion, the shaft sleeve portion comprising a shaft sleeve body (11); An air intake joint portion, the air intake joint portion comprising a hollow tube (22), a threaded column (23), a ring frame (24), a movable spring (25), and a ring plate (26); The threaded column (23) is fixedly extended into the middle of the hollow tube (22), and the ring frame (24) is sleeved and connected to the outer edge of the front face of the hollow tube (22), one end of the movable spring (25) is equidistantly fixedly connected to the inner end of the middle of the front face of the ring frame (24), and the other end of the movable spring (25) is fixedly connected to the inner side of the ring plate (26), and the middle of the threaded column (23) is set as a cavity.

2. The air-floating sleeve according to claim 1, characterized in that: A buckle head (21) is fixedly connected to the middle portion of the back side of the hollow tube (22), and the buckle head (21) is buckled into a buckle cavity (17), wherein the buckle cavity (17) is formed in one side of the outer surface of the shaft sleeve body (11).

3. The air-floating sleeve according to claim 1, characterized in that: The shaft sleeve portion further comprises an air inlet (12), an air outlet (13), and a sealing plug (14); The air inlets (12) are equidistantly connected and opened in the middle of the front side of the shaft sleeve body (11), and the sealing plug (14) is sealed in the end of the air inlet (12), and the air outlets (13) are equidistantly connected and arranged between adjacent air inlets (12).

4. The air-floating sleeve according to claim 1, characterized in that: A second guide port (16) is provided at an equidistant distance from the front of the inner side wall of the sleeve body (11) and is connected to the air inlet (12), and a first guide port (15) is provided inside the inner side of the second guide port (16) and is connected to the air outlet (13).

5. The air-floating sleeve according to claim 1, characterized in that: It also includes a receiving portion, the receiving portion including a receiving tube (31) and a limiting rope (32); The receiving tube (31) is threadedly connected to the outside of one end of the threaded column (23), and the ends of the limiting rope (32) are respectively fixedly connected to the upper side of the outer surface of the ring frame (24) and the receiving tube (31).

6. The air-floating sleeve according to claim 5, characterized in that: The limiting rope (32) is made of rubber, and thread grooves are arranged at equal intervals on the inner wall of the receiving tube (31).

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