Shaft head of pneumatic shaft

Abstract

The utility model relates to a shaft head of an air swelling shaft, and belongs to the technical field of air swelling shafts. Comprising a cylindrical main body, and a clamping end, a mounting end, an external end and a supporting end are sequentially arranged on the main body; the installation end is used for being installed in cooperation with an inner hole in the end of the air swelling shaft, and the external end is arranged outside the air swelling shaft. A sinking groove screw hole is formed in the outer circle face of the external end, an air outlet hole is formed in the end face of the clamping end, and the lowermost end of the sinking groove screw hole communicates with the air outlet hole; the countersunk groove screw holes are used for installing air taps, the air taps can be all installed in the countersunk groove screw holes, and the uppermost ends of the air taps do not exceed the outer circle face of the external end; a clamping groove is formed in the outer circle face of the clamping end. According to the shaft head of the air expansion shaft, the built-in shaft head of the air expansion shaft is transformed, so that an air tap is prevented from being damaged, and meanwhile, the air tap is convenient to replace.

Description

Technical Field

[0001] The utility model relates to an air shaft head, belonging to the technical field of air shafts. Background Art

[0002] An air shaft, a special rewinding and unwinding shaft, after being inflated under high pressure, its surface can significantly protrude, and after deflation, the surface part can quickly retract, so it gets its name. The core working principle of the air shaft (also often called pneumatic shaft, expansion shaft, inflation shaft, air expansion roller, etc.) is based on the adjustment of air pressure.

[0003] Specifically, when it is necessary to lock the reel core, the shaft is inflated through the connected air source, and components such as key bars, aluminum tiles or rubber on the outer surface of the shaft will uniformly expand, thereby tightly locking the reel core and making it stable and not easy to slide. When the work is completed and unloading is required, just press the sliding air core on the air nozzle to deflate, and the protruding part on the shaft surface will quickly retract, so that the reel core can be easily taken out.

[0004] In the process of implementing the technical solution of this application, the inventor found that there are at least the following technical problems in the prior art:

[0005] The currently used built-in air shaft head has corresponding circular holes opened on the air shaft, and then the air nozzle is screwed into the inner shaft head. During the rotation of the air shaft, since the power is transmitted from the shaft head to the air shaft, relative rotation is likely to occur between the shaft head and the air shaft, resulting in damage to the air nozzle, and it is not easy to replace the air nozzle for the misaligned and rotated shaft head. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an air shaft head, which reforms the built-in air shaft head to avoid damaging the air nozzle and at the same time facilitates the replacement of the air nozzle.

[0007] The air shaft head described in the utility model includes a cylindrical main body, and a clamping end, an installation end, an external end and a support end are arranged in sequence on the main body;

[0008] The installation end is used for fitting and installing with the inner hole at the end of the air shaft, and the external end is placed outside the air shaft;

[0009] A counterbore screw hole is opened on the outer circular surface of the external end, an air outlet hole is opened on the end surface of the clamping end, and the lowermost end of the counterbore screw hole communicates with the air outlet hole;

[0010] The counterbore screw hole is used for installing the air nozzle, and the air nozzle can be fully installed into the counterbore screw hole, and the uppermost end of the air nozzle does not exceed the outer circular surface of the external end;

[0011] A clamping groove is opened on the outer circular surface of the clamping end.

[0012] Further, the sunken groove screw hole is opened at the middle of the outer circular surface of the external end.

[0013] Further, a plurality of clamping grooves are formed on the outer circular surface of the clamping end. The clamping grooves are arc-shaped grooves and are annularly arranged on the outer circular surface of the clamping end.

[0014] Further, at least three arc-shaped grooves are arranged on the outer circular surface of the clamping end.

[0015] Further, the outer circular diameter of the external end is not greater than the outer circular diameter of the air shaft to be installed.

[0016] Further, the outer circular diameter of the external end is the same as the outer circular diameter of the air shaft to be installed.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present utility model changes the air nozzle to the outside of the air shaft, thereby avoiding damage to the air nozzle and facilitating the replacement of the air nozzle at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 is a right view of Embodiment 1 of the present utility model;

[0021] Figure 3 is Figure 2 a full sectional view taken along line A-A in

[0022] Figure 4 is a schematic structural diagram of the air shaft of Embodiment 1 of the present utility model;

[0023] Figure 5 is a schematic structural diagram of Embodiment 2 of the present utility model;

[0024] In the figure:

[0025] 1. Support end; 2. External end; 21. Sunken groove screw hole; 3. Installation end; 31. Keyway hole; 4. Clamping end; 41. Clamping groove; 42. Air outlet hole; 5. Air shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiment 1

[0027] As Figures 1 to 4 shown, the air shaft head of the present utility model includes a cylindrical main body, and a clamping end 4, an installation end 3, an external end 2, and a support end 1 are sequentially arranged on the main body;

[0028] The installation end 3 is used for mating installation with the inner hole at the end of the air shaft, and the external end 2 is placed outside the air shaft;

[0029] On the outer cylindrical surface of the external end 2, a counterbore screw hole 21 is provided, and on the end surface of the clamping end 4, an air outlet hole 42 is provided. The lowermost end of the counterbore screw hole 21 communicates with the air outlet hole 42;

[0030] The counterbore screw hole 21 is used for installing an air nozzle. The air nozzle can be completely installed into the counterbore screw hole 21, and the uppermost end of the air nozzle does not protrude beyond the outer cylindrical surface of the external end 2;

[0031] On the outer cylindrical surface of the clamping end 4, a clamping groove 41 is provided.

[0032] The counterbore screw hole 21 is opened to the middle of the outer cylindrical surface of the external end 2.

[0033] On the outer cylindrical surface of the clamping end 4, a plurality of clamping grooves 41 are provided. The clamping grooves 41 are arc-shaped grooves and are annularly arranged on the outer cylindrical surface of the clamping end 4.

[0034] At least three arc-shaped grooves are provided on the outer cylindrical surface of the clamping end 4, which has a better locking effect with the clamping member inside the air shaft.

[0035] The outer diameter of the external end 2 is not greater than the outer diameter of the air shaft to be installed.

[0036] The outer diameter of the external end 2 is the same as the outer diameter of the air shaft to be installed.

[0037] The main body is integrally made of carbon steel.

[0038] Working process or working principle:

[0039] By providing the external end 2, the counterbore screw hole 21 is arranged at the outer end of the air shaft 5, thus avoiding damage to the air nozzle during the rotation of the air shaft 5 and facilitating the replacement of the air nozzle.

[0040] Embodiment 2

[0041] The difference from Embodiment 1 is:

[0042] As Figure 5 shown, a keyway hole 31 is provided on the outer circumferential surface of the installation end 3.

[0043] In the present utility model, the description of the direction and relative position relationship of the structure, such as the description of front, back, left, right, up, and down, does not constitute a limitation to the present utility model and is only for the convenience of description.

Claims

1. An air shaft head, characterized in that, It includes a main body arranged in a cylindrical shape, on which a clamping end (4), a mounting end (3), an external end (2), and a supporting end (1) are successively arranged; The mounting end (3) is used for fitting and mounting with the inner hole at the end of the air shaft, and the external end (2) is placed outside the air shaft; A countersunk screw hole (21) is provided on the outer circumferential surface of the external end (2), and an air outlet hole (42) is provided on the end surface of the clamping end (4). The lowermost end of the countersunk screw hole (21) communicates with the air outlet hole (42); The countersunk screw hole (21) is used for installing an air nozzle. The air nozzle can be completely installed into the countersunk screw hole (21), and the uppermost end of the air nozzle does not exceed the outer circumferential surface of the external end (2); A clamping groove (41) is provided on the outer circumferential surface of the clamping end (4).

2. The air shaft head according to claim 1, characterized in that, The countersunk screw hole (21) is opened at the middle of the outer circumferential surface of the external end (2).

3. The air shaft head according to claim 2, wherein A plurality of clamping grooves (41) are provided on the outer circumferential surface of the clamping end (4). The clamping grooves (41) are arc-shaped grooves and are annularly arranged on the outer circumferential surface of the clamping end (4).

4. The air shaft head according to claim 3, characterized in that, At least three arc-shaped grooves are provided on the outer circumferential surface of the clamping end (4).

5. The air shaft head according to any one of claims 1-4, characterized in that The outer circumferential diameter of the external end (2) is not greater than the outer circumferential diameter of the air shaft (5) to be installed.

6. The air shaft head according to claim 5, wherein The outer circumferential diameter of the external end (2) is the same as the outer circumferential diameter of the air shaft (5) to be installed.

Images