CN201712781U

CN201712781U - Cuttlefish imitated impulse type water jet propulsion unit

Info

Publication number: CN201712781U
Application number: CN201020235333XU
Authority: CN
Inventors: 李力军; 王志东; 丛文超; 晋文菊; 吴贺贺; 杨爽; 陈明明
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2010-06-23
Filing date: 2010-06-23
Publication date: 2011-01-19
Anticipated expiration: 2020-06-23

Abstract

The utility model discloses a cuttlefish imitated impulse type water jet propulsion unit, which comprises a driving shaft connected with a hull. A driving gear is fixed on the driving shaft, a driven gear meshed with a driving gear is fixedly sleeved to the middle of a piston cylinder, the lower end of the piston cylinder is perpendicularly communicated to the middle of a water jet box, a piton rod, a piston and a rotating bearing which are coaxial are arranged in the piston cylinder, the inner wall of the piston is provided with a flange, the upper end of the piston rod extends out of the piston cylinder while the lower end of the piston rod is provided with a shoulder, the rotating bearing is arranged on the flange in the piston and fixed on the shoulder of the piston rod, a water suction check valve is arranged at one end of the water jet box, a water jet check valve is arranged at the other end of the water jet box, a flange cover fixedly connected with the hull and a bearing bush fixedly connected with the flange cover are sleeved at the upper end of the piston cylinder, and two thrust bearings are arranged between the bearing bush and the outer wall of the piston cylinder. The cuttlefish imitated impulse type water jet propulsion unit is fine in reliability and flexible in steering, and can complete water suction and jet in any directions within 360 degrees simultaneously.

Description

Squid-mantle-like pulse type water-spraying propulsion device

Technical field

The utility model relates to technical field of ships, is specifically related to marine water-jet propulsion system.

Background technology

At present, the aquatic bionic technology constantly develops, the principle of aquatic bionic is imitative cuttlefish and other cephalopods, these animals can be realized the fast speed motion by waterjet propulsion, contraction by muscle sprays endoceliac water at a high speed from narrow funnel-form jet pipe, the continuous repetition of this process and produce impulse force is widely used on the boats and ships according to the aquatic bionic propelling unit of this principle design.But the defective that this bionical propelling unit exists is, the structure more complicated, and ineffective words turn to and move backward.

Summary of the invention

The purpose of this utility model provide a kind of simple in structure, turn to flexibly, squid-mantle-like pulse type water-spraying propulsion device that backing performance is good.

For achieving the above object, the technical solution adopted in the utility model is: comprise the imput shaft that connects hull, fixing driving gear on the imput shaft fixedly is placed in the piston cylinder middle part with driving gear ingear driven gear, vertical connection water spray chamber middle part, piston cylinder lower end; Have coaxial piston rod, piston and rolling bearing in the piston cylinder, piston is closely tied in piston-rod lower end and rolling bearing is set between the two, piston inner wall has flange, stretch out outside the piston cylinder piston rod upper end, piston-rod lower end has a shaft shoulder, and rolling bearing is arranged on the interior flange of piston and is fixed on the shaft shoulder of piston rod; Water spray chamber one end is coniform suction side, is evenly equipped with several suction nozzles along circular cone outer wall circumferencial direction, and a suction check valve is set in each suction nozzle; The water spray chamber other end is communicated with a nozzle, is provided with the water spray check valve in the nozzle; The piston cylinder upper end is with the blind flange of affixed hull and the bearing outside of affixed blind flange, and two thrust bearings are set between bearing outside inwall and the piston cylinder outer wall.

The utlity model has following advantage: good reliability, turn to flexibly, can in 360 ° of scopes, turn to arbitrarily, when turning to, can finish the action of suction water spray.

Description of drawings

Fig. 1 is an overall structure scheme drawing of the present utility model;

Fig. 2 is the enlarged drawing of local I among Fig. 1;

Fig. 3 is the enlarged drawing of local I I among Fig. 1;

Fig. 4 is the enlarged drawing of local I II among Fig. 1;

Among the figure: 1. piston rod; 2. blind flange; 3. piston cylinder cover; 4. bearing outside; 5. imput shaft; 6. driving gear; 7. suction nozzle; 8 suction check valves; 9. water spray chamber; 10. nozzle; 11. water spray check valve; 12. screw-casing; 13. driven gear; 14. bearing carrier ring bottom; 15. two thrust bearings; 16. piston cylinder; 17. piston; 18. clamp nut; 19. rolling bearing; 20. adapter sleeve.

The specific embodiment

As shown in Figure 1, 2, water spray chamber 9 middle parts and piston cylinder 16 lower ends are fixing with screw-casing 12, make

water spray chamber

9 and 16 vertical being connected of piston cylinder.Piston cylinder 16 upper ends are with blind flange 2 and bearing outside 4, and blind flange 2 is fixed on the hull, and blind flange 2 and bearing outside 4 are connected by screw retention.Two thrust bearings 15 are installed between bearing outside 4 inwalls and piston cylinder 16 outer walls, and promptly bearing outside 4 is enclosed within outside two thrust bearings 15.Piston cylinder 16 outer walls have a boss, and boss is respectively installed 15, two thrust bearings 15 of a thrust bearing up and down can guarantee that blind flange 2 and bearing outside 4 maintain static.At bearing outside 4 lower end anchor shaft bearing sleeve bottoms 14, bearing carrier ring bottom 14 presses the thrust bearing 15 below the boss, and blind flange 2 presses the thrust bearing 15 above the boss.

In piston cylinder 16, be coaxially installed with piston rod 1, piston 17, clamp nut 18, rolling bearing 19 and adapter sleeve 20.Piston 17 is installed in piston rod 1 lower end, and rolling bearing 19 is installed between piston 17 and the piston rod 1, by rolling bearing 19 piston 17 and piston rod 1 is closely cooperated, and piston 17 can pump at piston cylinder 16.Piston 17 is the inner tubular construction that flange is arranged, piston rod 1 and piston cylinder 16 same axle mountings, and stretch out outside the piston cylinder 16 piston rod 1 upper end, there is a shaft shoulder piston rod 1 lower end, screw thread has been attacked in the end, rolling bearing 19 is installed on the flange in the piston 17 and is fixed on the shaft shoulder of piston rod 1, and the clamp nut 18 of rolling bearing 19 bottoms plays the tightening effect.By bolt adapter sleeve 20, adapter sleeve 20 lower ends are pressed against on the rolling bearing 19 in piston 17 upper ends, prevent rolling bearing play about in the of 19.

Middle part on piston cylinder 16 is fixed with driven gear 13, and driving gear 6 is installed with driven gear 13 engagements, and driving gear 6 is installed on the imput shaft 5, and imput shaft 5 is driven by the power on the hull.

Water spray chamber 9 two ends are respectively suction, water spray end, are streamlined structure, and wherein an end is coniform suction side, and along uniform several suction nozzles 7 that is equipped with of cone shape outer wall circumferencial direction, a suction check valve 8 are installed in each suction nozzle 7.Water spray chamber 9 other ends are communicated with a nozzle 10, and water spray check valve 11 is installed in the nozzle 10.

The utility model is when work, on the upper end connection engine installation aboard ship of piston rod 1, move up and down by the drive of the engine installation on the ship, drive piston 17 and in piston cylinder 16, do reciprocal suction and water spray motion, piston cylinder 16 and the water spray chamber 9 that connects together with it can freely rotate, and do not cause that bearing outside 4 and piston rod 1 rotate.Piston rod 1 upward movement drives piston 17 upwards motion in piston cylinder 16, and at this moment, water spray chamber 9 internal pressures are less than external pressure, and suction check valve 8 is opened under the inside and outside differential pressure effect, and water spray check valve 11 is closed, and finishes the suction action; When piston 17 moved downward, water spray chamber 9 internal pressures were greater than external pressure, and suction check valve 8 is closed, and water spray check valve 11 is opened under the inside and outside differential pressure effect, finishes the water spray action, produces thrust, and hull is advanced.

When turning to, imput shaft 5 drives piston cylinder 16 by driving gear 6 and driven gear 13 and rotates, and piston cylinder 16 drives water spray chamber 9 by screw-casing 12 and rotates, change the water spraying direction of nozzle 10, realization turns to function, when water spray chamber 9 turns over 180 when spending, just can realize car-backing function.In turning to concrete action, two thrust bearings 15 are motionless by the bearing outside 4 that blind flange 2 is fixed on the hull, piston cylinder 16 rotates, because of piston 17 and piston cylinder 16 for closely cooperating, piston cylinder 16 rotate the time, can drive piston 17 and rotate together, rolling bearing 19 assurance piston rods 1 do not rotate, still can pump, promptly when turning to, can finish the action of suction water spray.

Claims

1. squid-mantle-like pulse type water-spraying propulsion device, comprise the imput shaft (5) that connects hull, it is characterized in that: imput shaft (5) goes up fixedly driving gear (6), fixedly be placed in piston cylinder (16) middle part with driving gear (6) ingear driven gear (13), piston cylinder (16) lower end vertical connection water spray chamber (9) middle part; Have coaxial piston rod (1), piston (17) and rolling bearing (19) in the piston cylinder (16), piston (17) is closely tied in piston rod (1) lower end and rolling bearing (19) is set between the two, piston (17) inwall has flange, stretch out outside the piston cylinder (16) piston rod (1) upper end, piston rod (1) lower end has a shaft shoulder, and rolling bearing (19) is arranged on the interior flange of piston (17) and is fixed on the shaft shoulder of piston rod (1); Water spray chamber (9) one ends are coniform suction side, are evenly equipped with several suction nozzles (7) along circular cone outer wall circumferencial direction, and a suction check valve (8) is set in each suction nozzle (7); Water spray chamber (9) other end is communicated with a nozzle (10), is provided with water spray check valve (11) in the nozzle (10); Piston cylinder (16) upper end is with the blind flange (2) of affixed hull and the bearing outside (4) of affixed blind flange (2), between bearing outside (4) inwall and piston cylinder (16) outer wall two thrust bearings (15) is set.

2. squid-mantle-like pulse type water-spraying propulsion device according to claim 1, it is characterized in that: piston cylinder (16) outer wall has a boss, boss is respectively installed a thrust bearing (15) up and down, bearing outside (4) lower end captive joint bearing carrier ring bottom (14), bearing carrier ring bottom (14) is pressed against the thrust bearing (15) below the boss, and blind flange (2) is pressed against the thrust bearing (15) above the boss.