CN213057480U

CN213057480U - Automatic speed regulation control device for propeller

Info

Publication number: CN213057480U
Application number: CN201922110694.5U
Authority: CN
Inventors: 蔡猛; 陈双双; 王金利; 李桃
Original assignee: AVIC Huiyang Aviation Propeller Co Ltd
Current assignee: AVIC Huiyang Aviation Propeller Co Ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2021-04-27
Anticipated expiration: 2029-11-30

Abstract

The utility model discloses an automatic speed regulation control device of a propeller, which comprises an oil circuit control component, a centrifugal speed regulation component and a spring regulation component; the oil circuit control assembly comprises an oil distributing valve, an oil distributing lining cylinder sleeved outside the oil distributing valve, an oil distributing lining sleeve sleeved outside the oil distributing lining cylinder and having a U-shaped section, an upper bearing, a lower bearing and an outer shell sleeved outside the oil distributing lining sleeve; the upper end of the oil distributing valve is connected to the speed regulating spring, and the lower end of the oil distributing valve is abutted to the counter weight of the speed regulator; when the oil distributing valve is static, the bulge I seals the lower high-pressure oil hole, and the bulge II seals the middle oil hole; when the oil distributing valve moves downwards, the lower high-pressure oil hole is communicated with the oil outlet ring cavity, and the first oil cavity is also communicated with the large-distance oil way; when the oil distributing valve moves upwards, the lower high-pressure oil hole is communicated with the high-pressure oil ring cavity, and the second oil cavity is also communicated with the large-distance oil way. The utility model discloses a divide oil valve small, light in weight, response speed is fast, and inertia is little, and governing speed once targets in place, adjusts the precision height, has guaranteed the stability of system, has increased life.

Description

Automatic speed regulation control device for propeller

Technical Field

The utility model relates to a screw automatic speed regulation controlling means.

Background

The existing propeller speed regulator comprises an oil distribution lining, an oil distribution valve and a shell, wherein the upper end of the oil distribution valve is rigidly connected to a speed regulation spring, and the lower end of the oil distribution valve is abutted to a centrifugal balance weight. Propeller oil return holes are distributed on the side wall of the oil distribution bush from high to low, and the propeller long-distance oil inlet hole is also a high-pressure oil hole and an oil pump oil inlet hole; the middle of the oil distribution valve is rectangular, a first oil cavity communicated with the oil return hole of the propeller and a second oil cavity communicated with the oil supply hole of the oil pump are arranged on the outer wall of the rectangle, an upper oil cavity is arranged between the outer wall of the upper end of the rectangle and the upper plate of the oil distribution bush, and a lower oil cavity is arranged between the outer wall of the lower end of the rectangle and the lower plate of the oil distribution bush. When the engine runs stably in rotating speed, the oil distributing valve is in the middle position due to the axial force generated by the centrifugal balance weight of the speed regulator rotating caused by the centrifugal force and the elastic force of the speed regulating spring, the oil distributing valve is in a balanced state, and the rotating speed of the propeller is stable. When the load of the engine is increased, the rotating speed of the propeller is reduced, the centrifugal force of the centrifugal balance weight is reduced, when the rotating speed is smaller than the elastic force of the speed regulating spring, the oil distributing valve moves downwards to rotate against the centrifugal balance weight, the upper end of the oil distributing valve is folded, the long-distance oil hole of the propeller is communicated with the oil return hole, the propeller is reduced in distance, and further the rotating speed is increased to restore the balance rotating speed again; on the contrary, when the load of the engine is reduced, the rotating speed of the propeller is increased, the centrifugal force of the centrifugal balance weight is increased, when the centrifugal force is larger than the elastic force of the speed regulating spring, the oil distributing valve moves upwards, the centrifugal balance weight rotates, the upper end of the centrifugal balance weight is opened, the large-distance oil hole of the propeller is communicated with the oil inlet hole of the oil pump, the propeller is increased in distance, and then the rotating speed is reduced and the balance rotating. Because the oil distributing valve of the existing propeller speed regulator has large volume and heavy weight, when the speed is regulated, the oil distributing valve starts to respond slowly due to inertia, and then the oil distributing valve moves upwards too much or downwards too much to cause correction transition, and the oil distributing valve has to be adjusted back, so that the regulation processes of speed reduction and acceleration are repeated continuously, the rotating speed of an engine cannot be stabilized quickly, and even can not be stabilized, and serious rotating speed fluctuation occurs. It can be seen that the addition of only one hydraulic amplifying element to the governor does not make it satisfactory for use. Still, the lower extreme and the centrifugal counter weight of the branch oil valve of current screw speed regulator directly offset, because centrifugal counter weight during operation are rotatory, so divide the oil valve to do rotary motion under its drive, firstly lead to dividing the oil valve and the centrifugal counter weight between wearing and tearing seriously, long back, can cause the length and the centrifugal counter weight of dividing the oil valve to shorten, must increase the stroke of dividing the oil valve and just can compensate, so must adjust the control parameter of design, otherwise cause the speed governing to become invalid. Secondly, due to the rotation of the oil distribution valve, the oil distribution valve and the oil distribution lining are abraded, the sealing effect is poor, even the oil distribution valve fails, oil leakage is caused, and the function is abnormal. Thirdly, the abraded fragments enter each oil path to cause slow rotating speed and even clamping stagnation, thereby causing abnormal functions of the speed regulator. And fourthly, the oil distributing valve is rigidly connected with the speed regulating spring, the speed regulating spring also rotates, the spring rotates to generate distortion, the elasticity value is inconsistent with the system design, the pressure value of the spring changes, the designed control parameter needs to be adjusted, otherwise, the balance speed changes, the system drift is caused, and the service life of the spring is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned problem that exists among the prior art, provide a screw automatic speed governing control device, this controlling means's branch oil valve is small, light in weight, and response speed is fast, and inertia is little, and governing speed once targets in place, adjusts the precision height, has guaranteed the stability of system, has increased life.

In order to achieve the above object, the technical solution of the present invention is: an automatic speed regulation control device of a propeller comprises an oil circuit control assembly, a centrifugal speed regulation assembly and a spring regulation assembly; the spring adjusting component comprises a speed adjusting spring and a spring adjusting device which is pressed on the speed adjusting spring; the centrifugal speed regulation assembly comprises two speed regulator counterweights and a counterweight support, the lower end of the counterweight support is assembled on a transmission shaft of the engine through a spline and is blocked by an elastic check ring for the shaft, and the two speed regulator counterweights are symmetrically hinged on the counterweight support through a counterweight shaft;

the oil circuit control assembly comprises an oil distribution valve, an oil distribution lining barrel, an oil distribution lining with a U-shaped section, an upper bearing, a lower bearing and a shell; the oil distribution lining cylinder is sleeved outside the oil distribution valve, and the outer circle of the oil distribution lining cylinder penetrates through the oil distribution lining and the gland fixed at the upper end of the oil distribution lining; the shell is sleeved outside the oil distribution lining; the upper end of the oil distributing valve is connected to the speed regulating spring, and the lower end of the oil distributing valve is abutted to the counter weight of the speed regulator; a bulge I is arranged on the outer circle of the middle part of the oil distributing valve; an oil outlet annular cavity and a high-pressure oil annular cavity are arranged between the oil distributing valve and the oil distributing lining cylinder on the upper part and the lower part of the bulge I; the oil outlet ring cavity is connected with an oil outlet nozzle through an oil outlet hole between the oil distributing valve and the oil distributing lining cylinder; an upper high-pressure oil hole and a lower high-pressure oil hole are arranged in the oil distribution lining cylinder, an upper oil cavity and a lower oil cavity are respectively arranged between the upper end and the lower end of the oil distribution lining cylinder and the oil distribution lining sleeve, and the area of the upper oil cavity of the oil distribution lining cylinder is always smaller than that of the lower oil cavity; the upper high-pressure oil hole and the lower high-pressure oil hole are respectively communicated with the upper oil cavity and the lower oil cavity; when the oil distributing valve is static, the bulge I seals the lower high-pressure oil hole, when the oil distributing valve moves downwards, the lower high-pressure oil hole is communicated with the oil outlet ring cavity, and when the oil distributing valve moves upwards, the lower high-pressure oil hole is communicated with the high-pressure oil ring cavity; a bulge II is arranged on the excircle of the oil distribution lining cylinder, and a first oil cavity and a second oil cavity are arranged between the oil distribution lining cylinder and the oil distribution lining sleeve above and below the bulge II; the oil distribution bush is provided with an upper ring oil hole, a middle ring oil hole and a lower ring oil hole, and the shell is sequentially provided with an oil return path, a large-distance oil path and a high-pressure oil path from top to bottom; the upper ring oil hole, the middle ring oil hole and the lower ring oil hole are respectively communicated with an oil return path, a large-distance oil path and a high-pressure oil path; the first oil cavity is communicated with the oil return path, and the second oil cavity is respectively communicated with the high-pressure oil path and the high-pressure oil ring cavity; when the oil distributing valve is static, the bulge II seals the middle oil hole, when the oil distributing valve moves downwards, the first oil cavity is also communicated with the large-distance oil way, and when the oil distributing valve moves upwards, the second oil cavity is also communicated with the large-distance oil way.

Further preferably, the spring adjustment assembly further comprises a v-shaped spring seat; the bearing I is sleeved at the upper end of the oil distribution valve in an inner sleeve mode and is fixed by a nut fixed at the upper end of the oil distribution valve in a compression joint mode; the V-shaped spring seat is buckled on the nut and is fixed at the upper end of the outer sleeve of the bearing I; the lower end of the speed regulating spring is fixed on the V-shaped spring seat in a compression joint mode, and the upper end of the speed regulating spring is fixed by a spring adjusting device in a compression joint mode. The spring adjusting assembly with the structure only comprises the bearing I inner sleeve and the nut which rotate along with the oil distributing valve, the bearing I outer sleeve, the V-shaped spring seat and the speed regulating spring are not moved, the speed regulating spring is not twisted due to rotation any more, the change of the spring pressure value is not caused due to the twisting of the speed regulating spring any more, the control parameters of design are not required to be adjusted, time and labor are saved, the running stability of the speed regulating control device is ensured, and the service life of the speed regulating spring is prolonged.

Further preferably, the centrifugal governor assembly further comprises a roller; the lower end of the oil distributing valve penetrates through and is fixed in an inner sleeve of the bearing II; the positions of the counterweight of the speed governor and the oil distributing valve are hinged with rollers through roller shafts; the roller is abutted against the lower end of the outer sleeve of the bearing II. By the structure, even if the speed regulator counter weight rotates along with the propeller transmission shaft, the outer sleeve of the bearing II is only enabled to rotate, and the inner sleeve of the bearing II is not affected, so that the oil distribution valve does not rotate along with the rotation of the speed regulator counter weight, the defect caused by the rotation of the oil distribution valve is avoided, the contact friction between the speed regulator counter weight and the oil distribution valve is reduced, and the service life of the oil distribution valve is prolonged.

Further preferably, the gland is fixed at the upper end of the oil distribution bushing in a threaded connection mode.

The utility model discloses divide the oil valve among the prior art into the triplex: when the rotating speed of the propeller is in a balanced rotating speed, under the action of the axial component force of the centrifugal force of the counterweight of the speed regulator and the elastic force of the speed regulating spring, the oil distributing valve and the oil distributing lining cylinder are in the middle positions, the bulge II seals the middle oil hole and the large oil path, the bulge I seals the lower high pressure oil hole, so that the lower oil cavity is completely separated from the high pressure oil path and the oil outlet ring cavity, high pressure oil cannot enter the lower oil cavity, oil in the lower oil cavity cannot flow out, and the oil distributing valve keeps static. When the rotating speed of the propeller is lower than the balance rotating speed, the axial component force of the centrifugal force of the counterweight of the speed regulator is smaller than the elastic force of the speed regulating spring when the balance position is reached, so that the oil distributing valve moves downwards, the bulge I moves downwards, the lower oil cavity is communicated with the oil outlet annular cavity, oil flows outwards from the lower oil cavity through the oil outlet annular cavity and the oil outlet hole, high-pressure oil enters the upper oil cavity, the oil distributing lining cylinder moves downwards, the bulge II moves downwards, the first oil cavity connects the oil return path with the large-distance oil path, the propeller performs distance reducing action (reduces the load of the engine), so that the rotating speed of the engine is increased until the balance rotating speed is recovered, and the oil distributing. When the rotating speed of the propeller is higher than the balance rotating speed, the axial component of the centrifugal force of the counterweight of the speed regulator is larger than the elastic force of the speed regulating spring when the balance position exists, the oil distributing valve moves upwards, the bulge I moves upwards, the lower oil cavity is communicated with the high-pressure oil ring cavity, high-pressure oil enters the lower oil cavity, although the oil pressure of the upper oil cavity is equal to that of the lower oil cavity, the area of the lower oil cavity is larger than that of the upper oil cavity, the oil distributing lining cylinder moves upwards, the high-pressure oil way and the large-distance oil way are communicated through the first oil cavity, the propeller performs large-distance action (increases the load of the engine), the rotating speed of the engine is reduced until.

The utility model discloses the displacement output of the speed regulator counter weight that will reflect the small change of rotational speed is enlargied through minute oil valve hydraulic pressure, drives the branch oil bushing, enlargies through second hydraulic pressure, and the drive displacement piston changes the paddle angle. The oil separating lining cylinder is driven by hydraulic pressure, and has relatively large diameter, so that the oil separating valve has small diameter, reduced inertia and operation force, and no direct impact of oil flow on the oil separating valve, and this raises the sensitivity and reliability of the oil separating valve mechanism greatly. Meanwhile, the speed regulating spring and the counter weight of the speed regulator can be designed to be very small, the reduction of the mass further reduces the inertia force of the speed regulator, and the phenomenon of over-regulation of the rotating speed caused by the inertia of mechanical parts is reduced. The upper end of the oil distribution valve is connected with the speed regulating spring through the bearing I, and the lower end of the oil distribution valve is abutted against a roller arranged on a counter weight of the speed regulator through the bearing II, so that firstly, the contact friction between the counter weight of the speed regulating control device and the oil distribution valve is reduced, the oil distribution valve does not rotate along with the counter weight of the speed regulator, the defects caused by the rotation of the oil distribution valve are further avoided, the contact friction between the counter weight of the speed regulator and the oil distribution valve is reduced, and the service life of the oil distribution valve is prolonged; and secondly, the speed regulating spring is not twisted due to rotation, the change of the pressure value of the spring is not caused due to the twisting of the speed regulating spring, the designed control parameters are not required to be adjusted, time and labor are saved, the running stability of the speed regulating control device is ensured, and the service life of the speed regulating spring is prolonged.

In a word, the utility model discloses divide oil valve small, light in weight, response speed is fast, and inertia is little, and inertia can not lead to the correction of system excessively, once targets in place, and the regulation precision is high. The lower end of the oil distributing valve rotates along with the balance weight, only moves up and down, the speed regulating spring does not rotate any more, torsion is not generated, abrasion loss is greatly reduced, fragments are prevented from entering an oil way as far as possible, stability and precision of a system are guaranteed, and the service life is prolonged.

Drawings

Fig. 1 is a schematic view of the sectional structure of the front view of the present invention.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the present embodiment includes an oil path control assembly, a centrifugal governor assembly, and a spring adjustment assembly; the spring adjusting assembly comprises a speed adjusting spring 2 and a spring adjusting device 1 which is pressed on the speed adjusting spring 2. The centrifugal speed regulating assembly comprises two speed regulator counterweights 17 and a counterweight support 18, the lower end of the counterweight support 18 is assembled on a transmission shaft of the engine through a spline of the transmission shaft 13 and is shifted by an elastic check ring 12 for the shaft, and the two speed regulator counterweights 17 are symmetrically hinged on the counterweight support 18 through a counterweight shaft 16. The oil circuit control assembly comprises an oil distributing valve 6, an oil distributing lining barrel 7, an oil distributing lining 8 with a U-shaped section, an upper bearing 5, a lower bearing 10 and a shell 9. The oil distribution lining cylinder 7 is sleeved outside the oil distribution valve 6, and the outer circle of the oil distribution lining cylinder penetrates through the oil distribution lining 8 and the gland 23 fixed at the upper end of the oil distribution lining 8. Preferably, the gland 23 is screwed and fixed on the upper end of the oil distribution bushing 8. The shell 9 is sleeved outside the oil distribution bush 8. The upper end of the oil distributing valve 6 is connected to the speed regulating spring 2, and the lower end of the oil distributing valve is propped against the counter weight 17 of the speed changer. A bulge I31 is arranged on the outer circle of the middle part of the oil distributing valve 6. An oil outlet ring cavity 30 and a high-pressure oil ring cavity 32 are arranged between the oil distributing valve 6 and the oil distributing lining cylinder 7 above and below the bulge I31. The oil outlet ring cavity 30 is connected with an oil outlet nozzle through an oil outlet hole 25 between the oil distributing valve 6 and the oil distributing lining cylinder 7. An upper high-pressure oil hole 26 and a lower high-pressure oil hole 20 are arranged in the oil separating lining cylinder 7, an upper oil cavity 24 and a lower oil cavity 27 are respectively arranged between the upper end and the lower end of the oil separating lining cylinder and the oil separating lining 8, and the area of the upper oil cavity 24 is always smaller than that of the lower oil cavity 27. The upper high-pressure oil hole 26 and the lower high-pressure oil hole 20 are respectively communicated with the upper oil chamber 24 and the lower oil chamber 27. When the oil distributing valve 6 is static, the bulge I31 seals the lower high-pressure oil hole 20, when the oil distributing valve 6 moves downwards, the lower high-pressure oil hole 20 is communicated with the oil outlet ring cavity 30, and when the oil distributing valve 6 moves upwards, the lower high-pressure oil hole 20 is communicated with the high-pressure oil ring cavity 32. A bulge II 36 is arranged on the excircle of the oil separating lining tube 7, and a first oil chamber 28 and a second oil chamber 29 are arranged between the oil separating lining tube 7 and the oil separating lining 8 above and below the bulge II 36. The oil distribution bush 8 is provided with an upper ring oil hole 33, a middle ring oil hole 34 and a lower ring oil hole 35, and the shell 9 is provided with an oil return path 22, a large distance oil path 21 and a high pressure oil path 19 from top to bottom in sequence. The upper ring oil hole 33, the middle ring oil hole 34 and the lower ring oil hole 35 are respectively communicated with the oil return path 22, the long distance oil path 21 and the high pressure oil path 19. The first oil chamber 28 communicates with the oil return passage 22, and the second oil chamber 29 communicates with the high-pressure oil passage 19 and the high-pressure oil ring chamber 32, respectively. When the oil distribution valve 6 is static, the bulge II 36 seals the middle oil hole 34, when the oil distribution valve 6 moves downwards, the first oil chamber 28 is also communicated with the large-distance oil path 21, and when the oil distribution valve 6 moves upwards, the second oil chamber 29 is also communicated with the large-distance oil path 21.

Preferably, the spring adjustment assembly further comprises a n-shaped spring seat 3. The bearing I5 is sleeved at the upper end of the oil distribution valve 6 in an inner mode and is fixed by a nut 4 fixed at the upper end of the oil distribution valve 6 in a compression joint mode. The V-shaped spring seat 3 is buckled on the nut 4 and is fixed at the upper end of the outer sleeve of the bearing I5. The lower end of the speed regulating spring 2 is fixed on the V-shaped spring seat 3 in a compression joint mode, and the upper end of the speed regulating spring is fixed by the spring adjusting device 1 in a compression joint mode.

Preferably, the centrifugal governor assembly further comprises a roller; the lower end of the oil distributing valve 6 penetrates through and is fixed in an inner sleeve of the bearing II 10; the positions of the speed regulator counterweight 17 and the oil distribution valve 6 are hinged with a roller 14 through a roller shaft 15; the roller 14 abuts against the lower end of the outer sleeve of the bearing II 10.

Naturally, the invention also relates to other embodiments, and those skilled in the art can make corresponding changes and modifications according to the invention without departing from the spirit and substance of the invention, and these corresponding changes and modifications should be considered as improvements in the equivalent technology, and fall within the scope of protection of the claims of the invention.

Claims

1. An automatic speed regulation control device of a propeller comprises an oil circuit control assembly, a centrifugal speed regulation assembly and a spring regulation assembly; the spring adjusting component comprises a speed adjusting spring and a spring adjusting device which is pressed on the speed adjusting spring; the centrifugal speed regulation assembly comprises two speed regulator counterweights and a counterweight support, the lower end of the counterweight support is assembled on an engine transmission shaft through a spline and is blocked by an elastic retainer ring for the shaft, and the two speed regulator counterweights are symmetrically hinged on the counterweight support through a counterweight shaft; the method is characterized in that:

2. The propeller automatic speed regulation control device of claim 1, characterized in that: the spring adjusting assembly further comprises a V-shaped spring seat; the bearing I is sleeved at the upper end of the oil distribution valve in an inner sleeve mode and is fixed by a nut fixed at the upper end of the oil distribution valve in a compression joint mode; the V-shaped spring seat is buckled on the nut and is fixed at the upper end of the outer sleeve of the bearing I; the lower end of the speed regulating spring is fixed on the V-shaped spring seat in a compression joint mode, and the upper end of the speed regulating spring is fixed by a spring adjusting device in a compression joint mode.

3. The propeller automatic speed regulation control device according to claim 1 or 2, characterized in that: the centrifugal speed regulating assembly also comprises a roller; the lower end of the oil distributing valve penetrates through and is fixed in an inner sleeve of the bearing II; the positions of the counterweight of the speed governor and the oil distributing valve are hinged with rollers through roller shafts; the roller is abutted against the lower end of the outer sleeve of the bearing II.

4. The propeller automatic speed regulation control device of claim 3, characterized in that: the gland is fixed at the upper end of the oil distribution bush in a threaded connection mode.

5. The propeller automatic speed regulation control device according to claim 1 or 2, characterized in that: the gland is fixed at the upper end of the oil distribution bush in a threaded connection mode.