CN203051489U - Rotary air feeder without being influenced by bending disturbance of air pipe - Google Patents

Abstract

The rotary air supply device without the influence of the bending disturbance of the trachea includes the air bearing shaft, the air bearing sleeve, the air storage sleeve, the end cover and the base. gap, the air flotation sleeve is set in the air storage sleeve, the bottom of the air flotation sleeve is fixed to the base, the air flotation sleeve, the base, and the air storage sleeve form a high-pressure chamber at the bottom of the air flotation shaft, the air storage sleeve has an air inlet, and the air inlet It communicates with the high-pressure chamber. There is an axial through hole in the center of the air-floating shaft. The top of the air-floating shaft is fixed to the end cover with air holes. There are at least two groups of throttle holes, there are sealing grooves on both sides of the throttle holes, and there are air discharge holes on the side of the air bearing sleeve near the high pressure chamber. The air discharge groove, the air discharge hole and the air intake hole form an included angle and are isolated from each other, and the air storage sleeve is drilled through holes in the radial direction to communicate with the air discharge groove to form an exhaust hole. The utility model can continuously supply air and is not affected by trachea disturbance.

Description

Rotary air supply device without the influence of tracheal bending disturbance

technical field

The utility model relates to the field of air flotation.

Background technique

With the development of science and technology, gas lubrication is often used instead of ordinary mechanical lubrication, and high-pressure gas is introduced into the gap between objects in relative motion to form a gas film, avoiding direct contact to achieve frictionless motion.

Air flotation devices have different ways of forming gas films and different gas supply methods. Usually, the gas pipe is used to introduce gas into the high-pressure chamber, but no matter which gas supply method is used, the air pipe must not disturb the air flotation device. For some Compared with the air flotation device with air source movement, there is a big problem in air flotation air supply. For example, the side of the vertically placed folding hinges connected by hinges, the bottom uses multiple air bearing pads to realize the frictionless unfolding movement in the plane, and it is required that no external force is introduced when unfolding. If each air bearing pad is opened from the outside When the air pipe is introduced, the air floating pad moves with the hinge, and the air supply pipe will disturb the movement of the air floating pad, and there are many air supply lines, which are prone to twisting, bending, and winding, which is not easy to install and maintain; usually the air supply pipe The air cushion attached to the board is introduced from one board to another while supplying air to the board. However, when the hinge board is unfolded from the fitting state, it will be affected by disturbances such as bending and winding of the trachea at the joint, which will interfere with the unfolding of the hinge.

Contents of the invention

In order to solve the deficiencies of the influence of the tracheal bending disturbance of the existing air flotation device, the utility model provides a frictionless rotating air supply air flotation device that can continuously supply air and is not affected by the tracheal disturbance.

The technical scheme that the utility model solves its technical problem adopts is:

A rotary air supply device without the influence of tracheal bending disturbance, comprising an air flotation shaft, an air flotation sleeve, an air storage sleeve, an end cover and a base, the air flotation shaft is sleeved in the air flotation sleeve, the air flotation shaft and the air There is a small gap between the floating sleeves, the air floating sleeve is set in the air storage sleeve, the bottom of the air floating sleeve is fixed to the base, and the air floating sleeve, the base, and the air storage sleeve form a high-pressure chamber at the bottom of the air flotation shaft. There is an air inlet on the air storage sleeve, the air inlet communicates with the high-pressure chamber, the center of the air bearing shaft has an axial through hole, the top of the air bearing shaft is fixed to the end cover with the air hole, the The air bearing sleeve is drilled with blind holes axially from the first side of the high pressure chamber to form an air inlet. The air bearing sleeve is uniformly distributed with radial throttle holes along the circumference. There are at least two groups of throttle holes. There are sealing grooves on both sides of the hole, and the side of the air flotation sleeve near the high-pressure chamber has an air discharge hole. There are air discharge grooves on the inner and outer circles where the air discharge hole is located. , the air storage sleeve is drilled radially to communicate with the air discharge groove to form an exhaust hole.

The design idea of the utility model is: according to the principle of the air bearing, the frictionless rotation between the air bearing and the air bearing sleeve is realized, and then the high pressure gas is introduced from the air bearing sleeve to the The shaft is drawn out, so as to realize the frictionless rotating air supply.

The high-pressure gas enters the high-pressure chamber from the air inlet at the bottom of the gas storage sleeve. Part of the high-pressure gas in the high-pressure chamber flows out through the center hole of the air flotation shaft from the air outlet hole of the end cover to supply the next air flotation device, and the other part passes through the air inlet hole on the air flotation sleeve. Enter the air bearing sleeve, enter the gap between the air bearing shaft and the air bearing sleeve through the throttle hole to form an air film, and a small part directly enters the gap between the air bearing sleeve and the air bearing shaft from the high pressure chamber, and the air bearing sleeve has air discharge holes The high-pressure gas entering the gap is damped and sealed and then discharged through the vent hole and the vent hole on the gas storage sleeve. One end of the gap between the air flotation shaft and the air flotation sleeve is connected to the atmosphere, and the other end has a vent hole, so there is a pressure gradient in the gap. , Part of the high-pressure gas entering the gap through the orifice flows out from one side of the gap, and the other part is discharged through the gas discharge groove.

During the process of unfolding the folded hinge from the attached state to 180° under the action of the hinge, the frictionless rotating air supply device is installed on the rotation axis when the two folded hinges are unfolded, the base, the air bearing sleeve and a piece The plate is fixed, and the air bearing shaft is connected to another plate, so the high-pressure gas is transferred from one plate to the other, without being disturbed by the rotation and bending of the trachea, and the outer diameter of the frictionless rotating air supply is less than or equal to the thickness of the hinge plate, avoiding Mutual interference between multiple frictionless rotary air supply devices in the pasting state.

Although the frictionless rotating air supply device solves the problem of the bending disturbance of the air pipe, because the gas in the high-pressure chamber at the bottom produces an upward thrust on the air bearing shaft, an additional force in the vertical direction is introduced, so it can be used between the air bearing shaft and the base A soft rope is drawn in the center to balance part of the additional force.

The beneficial effect of the utility model is that the gas can be supplied continuously without being affected by the disturbance of the trachea.

Description of drawings

Figure 1 is a schematic diagram of a rotating gas supply device without the influence of tracheal bending disturbances.

Fig. 2 is a schematic diagram of the airflow direction of the rotary air supply device without the influence of the tracheal bending disturbance.

Figure 3 is a schematic diagram of the air flotation jacket.

Fig. 4 is a left side view of Fig. 3 .

Fig. 5 is an A-A sectional view of Fig. 3 .

Fig. 6 is a schematic diagram of the state of the folded hinges being attached.

Fig. 7 is a schematic diagram of the unfolding process of the folding hinge.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Figures 1 to 7, a rotating air supply device without the influence of tracheal bending disturbances includes an air bearing shaft 2, an air bearing sleeve 5, an air storage sleeve 6, an end cover 1 and a base 13, and the air bearing shaft 2 is set In the air bearing sleeve 5, there is a small gap between the air bearing shaft 2 and the air bearing sleeve 5, the air bearing sleeve 5 is set in the air storage sleeve 6, and the bottom of the air storage sleeve 6 is fixed to the base 13, The air flotation sleeve 5, the base 13, and the air storage sleeve 6 form a high pressure chamber 12 at the bottom of the air flotation shaft 2, and the air storage sleeve 6 has an air inlet 11, and the air inlet 11 communicates with the high pressure chamber 12, The center of the air bearing shaft 2 has an axial through hole 4, the top of the air bearing shaft 2 is fixed to the end cover 1 with the air hole 3, and the air bearing sleeve 5 is formed by punching a blind hole in the axial direction from the first side of the high pressure chamber Air intake holes 9, radial throttling holes 8 are evenly distributed along the circumferential direction on the air bearing sleeve 5, there are at least two groups of throttling holes 8, and there are sealing grooves 7 on both sides of the throttling holes 8, so There is an air discharge hole 14 near the side of the high-pressure chamber of the air flotation sleeve 5, and there are air discharge grooves 10 on the inner and outer circles of the circumference where the air discharge hole 14 is located. The air storage sleeve 6 is drilled in the radial direction to communicate with the air discharge groove to form an exhaust hole.

During the process of unfolding the folded hinge plate 14 from the attached state to 180° under the action of the hinge 15, the frictionless rotating air supply device 16 is installed on the rotation axis when the two-page folded hinge plate is unfolded, the base 12, the storage The air sleeve 6 is fixed to one plate, and the air bearing shaft 2 is connected to the other plate through the end cover 1, so the high-pressure gas is transmitted from one plate to the other, without being disturbed by the rotation and bending of the trachea, and the outer surface of the frictionless rotating air supply The diameter is less than or equal to the thickness of the hinge plate, avoiding mutual interference between multiple frictionless rotating air supply devices in the pasted state.

Claims (1)

1. A rotary air supply device without the influence of tracheal bending disturbance, characterized in that: it comprises an air flotation shaft, an air flotation sleeve, an air storage sleeve, an end cap and a base, the air flotation shaft is sleeved in the air flotation sleeve, and the There is a small gap between the air flotation shaft and the air flotation sleeve, the air flotation sleeve is set in the air storage sleeve, the bottom of the air flotation sleeve is fixed to the base, and the air flotation sleeve, the base, and the air storage sleeve are in the air flotation sleeve. A high-pressure chamber is formed at the bottom of the shaft. There is an air inlet on the air storage sleeve, and the air inlet communicates with the high-pressure chamber. There is an axial through hole in the center of the air-floating shaft. The end cover is fixed, and the air bearing sleeve is punched with blind holes in the axial direction from the first side of the high pressure chamber to form an air inlet. There are sealing grooves on both sides of the throttle hole, and there is an air discharge hole on the side of the air flotation sleeve near the high pressure chamber. They are at an included angle and are separated from each other, and the air storage sleeve is drilled through holes in the radial direction to communicate with the air discharge groove to form an exhaust hole.

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