CN201105804Y

CN201105804Y - One-way locking device for controllable pitch propeller

Info

Publication number: CN201105804Y
Application number: CNU2007200750041U
Authority: CN
Inventors: 王琴; 刘训腾; 张劲枫
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2007-09-25
Filing date: 2007-09-25
Publication date: 2008-08-27
Anticipated expiration: 2017-09-25

Abstract

The utility model relates to a unidirectional lock-up device for a controllable pitch propeller, aiming at solving the technical problems such as reducing the swing frequency of a pitch angle when advancing. The technical proposal adopted is that a check valve is arranged at the front side of an advancing oil filling port which is connected with a double oil hole pipe at a cylinder advancing cavity and the rear side of an advancing distributing groove of a distributor seal sleeve and the check valve is arranged in a valve body, of which the rear end is fixedly connected with a distributing short column, besides, a control piston applied to controlling the switch of the check valve is arranged in the valve body. The unidirectional lock-up device is applicable to controllable pitch propellers of various types which are arranged at a distributor at the head end of a gear case and of which designed pitch angle is less than or equal to 30 degrees.

Description

Controllable pitch propeller unidirectional locking arrangement

Technical field:

The utility model relates to the propelling unit that a kind of screw pitch of propeller blades changes, particularly a kind of by with the reciprocating device of control element of the control element effect of propeller coaxial.

Background technology:

Screw propeller is one of important composition of marine propulsion, for adapting to the demand of various operational configurations of boats and ships or effect, the dealer adopts and rotates blade to regulate the technical scheme of blade pitch angle, corresponding therewith, the organization plan that rotation blade of all kinds in this technical field, occurred, wherein more commonly, in the propeller hub of screw propeller, hydraulic ram is set, the reciprocating motion of the pistons of this oil cylinder is the power that rotates blade, piston at oil cylinder just, operation in the reversing oil pocket, its sense of motion and blade rotation direction correspondence, thus the positive and negative or big or small of blade pitch angle determined, to adapt to ship's navigation or operation different demands to thrust direction or size; The oil cylinder of above-mentioned rotation blade, the existing structure of its hydraulic control system is, the pressure oil pipe of control cock is connected in the oil distributor sealing shroud that is fixed on hull, and sealing is overlapped and joined oily short column and is bearing fit, joins oily short column and connects two oilhole pipes and be the one rotation with a system, two oilhole pipes respectively connecting bolt propeller hub inner cylinders just, the reversing chamber, in the roll adjustment process, pressure oil enters the positive car or the reversing chamber of oil cylinder, orders about the pitch angle that blade turns to setting, control cock is closed, and roll adjustment finishes.

Actual boats and ships are in navigation or operation process, the rotating vane that blade is subjected to is turned round and short mainly is made up of hydrodynamic force, centnifugal force and friction torque, and wherein friction torque is opposite with two the former synthetic torque direction, and its amount is also less, therefore, there is above-mentioned synthetic moment of torsion all the time on the blade after roll adjustment finishes; When the blade design pitch angle of tuning for Controllable Pitch Propeller was less than or equal to 30 °, in the reversing position, above-mentioned synthetic moment of torsion can not influence the pitch angle position that blade is stabilized in setting; And in positive parking stall, because above-mentioned resultant moment value is bigger, the positive car of oil cylinder chamber inner fluid can leak from the tolerance clearance between oil distributor sealing shroud and the cooperation short column, resultant moment will rotate blade and leave the pitch angle position of setting, at this moment, the tuning for Controllable Pitch Propeller electric-control system detects the variation of pitch angle, opening controlling valve, blade is withdrawn into instruction (setting) pitch angle position, so repeatedly, tuning for Controllable Pitch Propeller promptly occurs in the positive high problem of parking stall pitch angle hunting frequency, thereby the abrasion of aggravation distance adjustor and the continuous fault of appearance, when swing when excessive, more can cause ship's navigation performance abnormality, or even cause the overload danger of main frame.

The utility model content:

Technical problem to be solved in the utility model is, a kind of improved controllable pitch propeller unidirectional locking arrangement is provided, it can make the little device in blade design pitch angle of tuning for Controllable Pitch Propeller, it is in positive parking stall, after pitch angle is set up, keep Luo Jiao stable, or obviously reduce the hunting frequency of pitch angle, improve the drive ability and the reliability of tuning for Controllable Pitch Propeller.

The technical scheme in the invention for solving the above technical problem is, controllable pitch propeller unidirectional locking arrangement includes joins oily short column, oil distributor, gear case, two oilhole pipes and oil cylinder, the gear case mouth is connected with axle system, the gear case front end is installed with oil distributor, stretch in the sealing shroud of oil distributor to be provided with and join oily short column, join oily short column and be connected with two oilhole pipes, the ahead and astern oil transportation hole that is extended through two oilhole pipes of axle system is connected with respectively and is just driving actuator cylinder that blade rotates, the reversing chamber, be characterized in: at the rear side of the positive car distributing groove of positive front side, car oil transportation hole that connects the two oilhole pipes in the positive car of oil cylinder chamber and oil distributor sealing shroud, be provided with a check valve, check valve is arranged in the valve body, the rear end of valve body is fixedly connected with joins oily short column, also is provided with controlling non-return valve control of turning piston in valve body.After roll adjustment finished, check valve sealed the positive car oil transportation hole of two oilhole pipes and the positive car chamber of actuator cylinder automatically, and during tuning for Controllable Pitch Propeller reversing roll adjustment, pressure oil promotes control plunger and opens check valve, and oil return line is connected in the positive car of actuator cylinder chamber, and the roll adjustment that can keep moveing backward is smooth and easy.

The utility model is with the logical positive car oil circuit and the actuator cylinder of the two oilhole pipes of check valve sealing, be less than or equal to 30 ° tuning for Controllable Pitch Propeller for the design pitch angle, can guarantee that it is (being under the synthetic torsional interaction of corresponding blade) under the positive arbitrary operating mode of car, the blade pitch angle is stabilized on the location of instruction, can eliminate existing tuning for Controllable Pitch Propeller of the same type and produce the high defective of pitch angle hunting frequency, thereby guarantee that the propelling unit drive ability is good, and can eliminate the hidden danger that main frame may overload, reduce the wearing and tearing of each motion assembly of distance adjustor simultaneously, the service life of prolongation equipment, the setting of its control plunger, can guarantee the to move backward smooth and easy realization of roll adjustment function, the utility model adopts a positive car oil circuit behind the check valve sealing roll adjustment, be to take into full account the utility model to adapt to the characteristics that the design pitch angle is less than or equal to 30 ° the synthetic moment of torsion of tuning for Controllable Pitch Propeller blade, and apparatus structure is simplified as far as possible, and can reduce equipment cost.

Description of drawings:

Fig. 1 is the utility model controllable pitch propeller unidirectional locking arrangement and distance adjustor combination scheme drawing.

Fig. 2 is that part member vertical profile is looked scheme drawing among Fig. 1.

Fig. 3 be among Fig. 2 A to view.

The specific embodiment:

With reference to Fig. 1, controllable pitch propeller unidirectional locking arrangement includes joins oily short column 1, control plunger 2, check valve 3, gland 4, valve body 5, oil distributor 6, gear case 7, two oilhole pipe 8.

Join oily short column 1, its agent structure and reversing roll adjustment oil circuit and existing structure are same or similar as shown in Figure 2, the sealing shroud 62 of external cylindrical surface and oil distributor 6 is bearing fit, and keep leak tightness under its slew mode, shown in Fig. 2,3, join oily short column 1 and include cylinder 11, the positive vertical hole 12 of car, reversing transverse holes 13, the vertical hole 14 of reversing, positive car transverse holes 15, another vertical hole 12 ' of positive car, wherein oil circuit is the B-B cross-sectional schematic by Fig. 3:

The oil circuit of ahead parts is: the positive car distributing groove 63 of oil distributor 6 sealing shrouds 62 is communicated with positive car transverse holes 15, positive car transverse holes 15 is connected with the vertical hole 12 ' of positive car, the positive vertical hole 12 ' of car is connected with the through hole 54 of valve body 5, the vertical hole of another positive car 12 front ends are connected with the positive car through hole 56 of valve body 5, and its rear end is connected with the positive car oil transportation hole 81 of two oilhole pipes 8;

The oil circuit of astern parts is: the reversing distributing groove 64 of oil distributor 6 sealing shrouds 62 is communicated with reversing transverse holes 13, reversing transverse holes 13 is connected with the vertical hole 14 of reversing, the back cavity 51 of vertical hole 14 and control plunger 2 of moveing backward is communicated with, and all the other structures are all same or similar with existing structure.

Control plunger 2 is columns, includes piston body 21, drain charge groove 22, push rod 23, and the piston hole 52 of the external cylindrical surface of its piston body 21 and valve body 5 is bearing fit, and piston body 21 is provided with one group of drain charge groove 22 vertically;

The rear end of piston body 21 is communicated with the vertical hole 14 of the reversing of joining oily short column 1, its front end center is provided with push rod 23, valve core 31 the two line of centers in-line of this push rod 23 and check valve 3, push rod 23 is extended through the ante-chamber 53 of valve body 5, and piston body 21 rear ends are provided with seal ring.

Check valve 3, it is a cone valve, include valve core 31, draining hole 32 and spring 33, as shown in Figure 2, the valve opening 57 of the cylinder of valve core 31 and valve body 5 is bearing fit, and its cone-shaped valve head is to be engaged on the conical valve seat hole 55 of valve body 5, valve core 31 endoporus are provided with retracing spring 33, these spring 33 1 ends are held in gland 4, and the other end is held in valve core 31, in the draining hole 32 that the endoporus side offers and positive car through hole 56 is communicated with of valve core 31 nearly cone valve ends.

Valve body 5, it is the block that control plunger 2 and check valve 3 are set, its rear end connects joins oily short column 1, its front end connects gland 4, join oily short column 1, valve 5 and gland 4 threes and be fixedly connected on two oilhole pipes 8 by running through screw 58, valve body 5 also includes back cavity 51, piston hole 52, ante-chamber 53, through hole 54, valve seat orifice 55, positive car through hole 56, valve opening 57;

Dispose the piston body 21 of control plunger 2 in the piston hole 52, piston hole 52 at piston body 21 rear sides is formed with back cavity 51, piston hole in piston body 21 front sides is formed with ante-chamber 53, back cavity 51 is communicated with the vertical hole 14 of the reversing of joining oily short column 1, ante-chamber 53 is communicated with through hole 54, through hole 54 is communicated with the vertical hole 12 ' of the positive car of joining oily short column 1, the front end of ante-chamber 53 is formed with bevelled valve seat orifice 55, the cone-shaped valve head of the valve core 31 of this hole and check valve 3 cooperates, valve seat orifice 55 and positive car through hole 56 are communicated with, and positive car through hole 56 is communicated with the vertical hole 12 of the positive car of joining oily short column 1;

Valve seat orifice 55 and valve opening 57 are communicated with, and dispose the valve core 31 of check valve 3 in the valve opening 57 and are bearing fit;

Valve body 5 front ends are established gland 4, and contact surface is provided with seal ring 41 altogether.

Oil distributor 6 includes housing 61, sealing shroud 62, positive car distributing groove 63 and reversing distributing groove 64, and its structure and existing structure are same or similar, no longer describe in detail.

Gear case 7, its structure is identical with existing structure, and the mouth of gear case 7 is connected with the axle system that drives screw propeller, and the gear case front end is installed with oil distributor.

Two oilhole pipes 8, include the positive car oil transportation hole 81 and the reversing oil transportation hole 82 that is connected the chamber of moveing backward that connect the positive car of oil cylinder chamber, its structure is identical with existing structure, and two oilhole pipes 8 are extended through gear case 7 and oil distributor 6, and with join oily short column 1 and be connected, dependency structure is known technology.

The action of controllable pitch propeller unidirectional locking arrangement is:

During roll adjustment (positive car operation), pressure oil is fixed in the sealing shroud 62 of housing 61 from oil distributor 6 through control cock the vertical hole 12 ' of the positive car distributing groove 63-positive car of positive car transverse holes 15--through hole 54-ante-chamber 53-backs down check valve 3-and makes positive car to rotating (corresponding oil cylinder reversing chamber oil return is identical with prior art) through valve seat orifice 55, the positive positive car chamber-blade of the positive car oil transportation of the vertical hole 12-of the positive car of car through hole 56-hole 81-oil cylinder;

Positive car oil transportation hole 81, the positive vertical hole 12 of car and the positive car through hole 56 of positive car roll adjustment end-the check valve 3 positive car of SELF CL-oil cylinder chamber, two oilhole pipes 8 under spring 33 effects is by the airtight oil pocket of check valve 3 a sealings formation no rotary seal, realize the function of the utility model unidirectional locking under the ahead operation condition, make blade keep pitch angle stable.

During roll adjustment (car backing operation), pressure oil is moveed backward 82-oil cylinder reversing chamber, vertical hole 14-reversing oil transportation hole-blade do reversing to rotation through control cock from the reversing distributing groove 64-of the sealing shroud 62 of oil distributor 6 reversing transverse holes 13-; When entering to move backward vertical hole 14 with above-mentioned pressure oil, the push rod 23 that promotes control plunger 2-control plunger 2 at back cavity 51 backs down check valve 3, and the fluid in the positive car of oil cylinder chamber realizes that through the positive positive car distributing groove of the positive car through hole of the vertical hole 12-of the positive car of car oil transportation hole 81-56-valve seat orifice 55-ante-chamber 53-through hole 54-positive car transverse holes 15-63-oil return the action of reversing roll adjustment is smooth and easy.

Claims

1, a kind of controllable pitch propeller unidirectional locking arrangement, include and join oily short column, oil distributor, gear case, two oilhole pipe and oil cylinder, the gear case mouth is connected with axle system, the gear case front end is installed with oil distributor, stretch in the sealing shroud of oil distributor to be provided with and join oily short column, join oily short column and be connected with two oilhole pipes, the ahead and astern oil transportation hole that is extended through two oilhole pipes of axle system be connected with respectively the actuator cylinder that drives the blade rotation just, the chamber of moveing backward, it is characterized in that:

A. at the rear side of the positive car distributing groove (63) of (8) front side, positive car oil transportation hole that connects the two oilhole pipes (8) in the positive car of oil cylinder chamber and oil distributor (6) sealing shroud (62), be provided with a check valve (3);

B. check valve (3) is arranged in the valve body (5), and the rear end of valve body (5) is fixedly connected with joins oily short column (1);

C. in valve body (5), also be provided with controlling non-return valve (3) control of turning piston (2).

2, controllable pitch propeller unidirectional locking arrangement according to claim 1 is characterized in that check valve (3) is a cone valve, and valve opening (57) combination of this check valve (3) and valve body (5) is bearing fit.

3, controllable pitch propeller unidirectional locking arrangement according to claim 1, it is characterized in that being equipped with control plunger (2) in the piston hole (52) of valve body (5) is bearing fit, control plunger (2) one end centers are provided with push rod (23), the centerline collineation of the line of centers of control plunger (2) and check valve (3).

4, controllable pitch propeller unidirectional locking arrangement according to claim 1, the positive car transverse holes (15) that it is characterized in that joining oily short column (1) is connected with the through hole (54) of valve body (3) through the positive vertical hole of car (12 '), through hole (54) is connected with positive car through hole (56) through ante-chamber (53) and valve seat orifice (55), and positive car through hole (56) is connected with and the positive car longitudinal hole (12) of joining oily short column (1) of logical positive car oil circuit (81) connection of two oilhole pipes (8).

5, controllable pitch propeller unidirectional locking arrangement according to claim 1 is characterized in that the back cavity (51) of valve body (3) is connected with the vertical hole of reversing (14) of joining oily short column (1), and the vertical hole (14) of moveing backward is connected with reversing transverse holes (13).