CN103047288B - Rotary air supply device free from air pipe curve disturbance - Google Patents

Abstract

A rotary air supply device free from air pipe curve disturbance comprises an air floatation shaft, an air floatation sleeve, an air storage sleeve, an end cover and a base, wherein the air floatation shaft is sleeved with the air floatation sleeve; tiny gap exists between the air floatation shaft and the air floatation sleeve; the air floatation sleeve is sleeved with the air storage sleeve; the bottom of the air floatation sleeve is fixed with the base; a high-pressure cavity is formed at the bottom of the air floatation shaft by the air floatation sleeve, the base and the air storage sleeve; an air inlet is formed in the air storage sleeve; the air inlet is communicated with the high-pressure cavity; an axial through hole is formed at the center of the air floatation shaft; the top end of the air floatation shaft is fixed with the end cover with an air outlet hole; at least two groups of radial throttling holes are uniformly distributed in the matched part of the air floatation shaft and the air floatation sleeve in the circumferential direction; an air discharging hole is formed on one side, close to the high-pressure cavity, of the air floatation sleeve; an air discharging groove is formed in the outer circle of the circumference where the discharging hole is located; a through hole formed in the gas storage sleeve in the radial direction is communicated with the air discharging hole so as to form an exhaust vent. The invention provides a friction-free rotary air supply air floatation device which can continuously supply air and is free from air pipe disturbance.

Description

A Rotary Air Supply Device Without the Effect of Tracheal Bending Disturbance

technical field

The invention 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 gas 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 deficiency of the influence of the tracheal bending disturbance of the existing air flotation device, the present invention provides a frictionless rotating air supply air flotation device which can continuously supply air and is not affected by the tracheal disturbance.

The technical solution adopted by the present invention to solve its technical problems 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 mating section of the air flotation shaft and the air flotation sleeve is uniformly distributed with radial throttle holes along the circumferential direction. There are at least two groups of the throttle holes. There are air discharge grooves on the inner and outer rings, and holes on the air storage sleeve communicate with the air discharge holes in the radial direction to form exhaust holes.

The design idea of the present invention is: according to the principle of the air bearing, realize the frictionless rotation between the air bearing and the air bearing, and then introduce the high pressure gas from the air bearing into the air shaft through the way of using its own high pressure gas supply out, so as to achieve frictionless rotary 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 from the air outlet hole of the end cover through the center hole of the air flotation shaft to supply the next air flotation device, and the other part passes through the upper section of the air flotation shaft. The flow hole enters the gap between the air flotation shaft and the air flotation sleeve to form an air film, and a small part directly enters the gap between the air flotation sleeve and the air flotation shaft from the high pressure chamber. There are vent holes on the air flotation sleeve, and the high pressure gas entering the gap passes through After damping and sealing, it is discharged through the air discharge hole and the exhaust hole on the air storage sleeve. One end of the gap between the air bearing shaft and the air bearing sleeve is connected to the atmosphere, and the other end has an air discharge hole. Therefore, there is a pressure gradient in the gap, and it enters the gap through the orifice. Part of the high-pressure gas inside flows out from one side of the gap, and the other part is discharged through the unloading groove.

During the process of unfolding the folded hinge from the bonded 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 invention 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 rotary air supply device without the influence of tracheal bending disturbance.

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

Fig. 3 is a schematic diagram of the bonding state of the folded hinge boards.

Fig. 4 is a schematic diagram of the unfolding process of the folding hinge board.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Figures 1 to 4, a rotating air supply device without the influence of tracheal bending disturbances includes an air bearing shaft 3, an air bearing sleeve 7, an air storage sleeve 6, an end cover 5 and a base 12, and the air bearing shaft 3 is set In the air bearing sleeve 7, there is a small gap between the air bearing shaft 3 and the air bearing sleeve 7, the air bearing sleeve 7 is set in the air storage sleeve 6, the bottom of the air bearing sleeve 7 is fixed to the base 12, The air flotation sleeve 7, the base 12, and the air storage sleeve 6 form a high pressure chamber 13 at the bottom of the air flotation shaft 3, and the air storage sleeve 6 has an air inlet 11, and the air inlet 11 communicates with the high pressure chamber 13, There is an axial through hole 4 in the center of the air bearing shaft 3, the top of the air bearing shaft 3 is fixed to the end cover 1 with the air hole 2, and the mating sections of the air bearing shaft 3 and the air bearing sleeve 7 are evenly distributed along the circumferential direction There are at least two sets of radial throttle holes 8, and there are at least two groups of the throttle holes 8. There are air discharge holes 10 on the side of the air bearing sleeve 7 near the high-pressure chamber, and there are air discharge grooves 5 on the inner and outer rings of the circle where the air discharge holes are located. The gas storage sleeve 6 is drilled through holes in the radial direction to communicate with the air discharge hole 10 to form an exhaust hole 9 .

During the process of unfolding the folded hinge 15 from the bonded state to 180° under the action of the hinge 16, the frictionless rotating air supply device is installed on the rotation axis when the two folded hinges are unfolded, the base 13, the air storage The sleeve 6 is fixed to one plate, and the air bearing shaft 3 is connected to the other plate through the end cover 1, so that 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 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. one kind bends the rotation air feeder of disturbing influence without tracheae, it is characterized in that: comprise air-bearing shafts, air supporting cover, gas storage jacket, end cap and base, described air suspension shaft sleeve is contained in air supporting cover, micro-gap is there is in described air-bearing shafts and air supporting between overlapping, described air supporting cover is sleeved in gas storage jacket, described air supporting cover bottom is fixed with base, described air supporting cover, base, gas storage jacket forms hyperbaric chamber bottom air-bearing shafts, described gas storage jacket there is suction port, described suction port communicates with hyperbaric chamber, there is axial hole at described air-bearing shafts center, described air-bearing shafts top is fixed with the end cap of band air outlet hole, the section of cooperation along the circumferential direction uniform radial throttle orifice is overlapped in described air-bearing shafts and air supporting, described throttle orifice has two groups at least, described air supporting is overlapped nearly hyperbaric chamber side and is unloaded pore, described unloading on the circumference Internal and external cycle of pore place unloads air drain, described gas storage jacket is radially got through hole and unload pore and to communicate formation exhaust port.