CN214888030U

CN214888030U - Servo valve core centering device of pump control system of pump control type marine steering engine

Info

Publication number: CN214888030U
Application number: CN202121010813.0U
Authority: CN
Inventors: 韩庆佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-26
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses a marine steering wheel pump control system servo case of pump accuse returns device of putting, it include casing, servo case return in the mechanism and set up in servo case adjustment mechanism of mechanism left end in the servo case returns, servo case returns in the mechanism includes case connecting rod base, case connecting rod, first connecting rod sleeve, second connecting rod sleeve, first piston rod and piston assembly, is located part in the casing left and right both ends of case connecting rod are overlapped respectively and are equipped with first connecting rod sleeve and second connecting rod sleeve. The utility model discloses the mode of piston top dead center is utilized to the device, makes the accurate meso position of getting back to of servo case to solve above-mentioned boats and ships steering wheel servo case and can not accurately get back to the helm running problem that the meso position leads to.

Description

Servo valve core centering device of pump control system of pump control type marine steering engine

Technical Field

The utility model particularly relates to a steering wheel pump accuse technical field for pump accuse type ship specifically is the marine steering wheel pump accuse system servo case of pump accuse returns to center device.

Background

The steering engine is an important device of the ship, is directly related to the maneuverability of the ship, and can cause great influence on the navigation safety of the ship once a fault occurs, thereby causing great loss.

At present, pump control type steering engines installed on ships have the phenomenon of 'rudder running' in different degrees. The reason is that the servo valve core of the pump control device does not return to the middle position, so that the servo oil flows into the differential cylinder, the servo piston in the differential cylinder moves under the action of the oil pressure, the servo piston drives the variable pump to tilt the rod to move, the variable pump discharges the oil to generate the oil pressure in the main oil path, and then the rudder rotates to cause the 'rudder running'.

The centering device of the servo valve core of the prior pump control type marine steering engine pump control system consists of three springs, wherein one side of the servo valve core is provided with two springs (one is arranged inside and outside the servo valve core respectively), and the other side of the servo valve core is provided with one spring; when the torque motor has no force acting on the servo valve core, the servo valve core is returned to the original position by the acting force of the three springs.

Without a fixed point of the middle position, the servo valve core is difficult to accurately return to the middle position only by the acting force of three springs. If the elastic force of one of the springs is changed from the initial value, the force of all three springs acting on the servo valve core is different from the initial value, and the servo valve core cannot return to the initial middle position, so that the steering engine runs.

The existing pump control type steering engine is provided with a middle position adjusting mechanism, but can only be adjusted temporarily, and the middle position cannot be changed completely and is not accurate. If the middle position needs to be completely adjusted, a steering engine pump control system and the like need to be disassembled according to the steering engine specification, the workload is large, and the ship needs to stop sailing and operating when necessary.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a pump accuse type marine steering wheel pump control system servo case device of returning to the center is in order to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the servo valve core returning mechanism comprises a valve core connecting rod base, a valve core connecting rod, a first connecting rod sleeve, a second connecting rod sleeve, a first piston connecting rod and a piston assembly, wherein the left end and the right end of the valve core connecting rod in the shell are respectively sleeved with the first connecting rod sleeve and the second connecting rod sleeve, opposite ends of the first connecting rod sleeve and the second connecting rod sleeve are respectively connected with a first connecting rod sleeve driver and a second connecting rod sleeve driver in a driving mode, the bottom ends of the first connecting rod sleeve driver and the second connecting rod sleeve driver are arranged on the valve core connecting rod base in a sliding mode, hinges are fixedly arranged on the first connecting rod sleeve and the second connecting rod sleeve, each hinge is hinged to the bottom ends of the first piston connecting rod and the second piston connecting rod respectively, and the top ends of the first piston connecting rod and the second piston connecting rod are connected to the piston assembly fixed on the inner top surface of the shell respectively.

Preferably, a second centering device connecting base is fixedly arranged on the right side surface of the bottom of the shell, and the connecting base is connected with the LVDT through a plurality of second connecting bolts.

Preferably, both ends of the valve core connecting rod penetrate through the shell and extend out, and a first valve core connecting rod bearing and a second valve core connecting rod bearing are respectively arranged between the valve core connecting rod and contact ends on the left side and the right side of the shell.

Further, preferably, the piston assembly comprises a piston cylinder, a piston and a piston spring, the piston cylinder is fixedly arranged on the inner top surface of the shell, a piston chassis is arranged in the piston cylinder in a matched and sliding manner, the piston is fixedly connected to the top end surface of the piston chassis, two sides of the piston are respectively hinged to the top ends of the first piston connecting rod and the second piston connecting rod, the piston spring is connected between the bottom end surface of the piston chassis and the inner bottom surface of the piston cylinder, one end of a piston guide rod is fixedly arranged at the center position of the inner bottom surface of the piston cylinder, and the other end of the piston guide rod penetrates through the piston chassis and extends into a guide hole of the piston.

Further, as preferred, servo case adjustment mechanism includes adjusting sleeve and adjustable ring, adjusting sleeve adaptation cover is established and is located the left part of casing on the surface of case connecting rod, the left end of adjusting sleeve is fixed with adjusting sleeve unable adjustment base, just all be fixed with fixation nut on the right flank of adjusting sleeve unable adjustment base, the left end of adjusting sleeve unable adjustment base is installed on servo case device casing, the adaptation cover is equipped with on the surface of adjusting sleeve the adjustable ring, adjusting sleeve's right-hand member is fixed and is provided with first centering device connection base, first centering device connection base with adjusting sleeve unable adjustment base with servo case device casing all adopts first connecting bolt cooperation fixed connection.

The utility model adopts the above technique, compare with current technique and have following beneficial effect: the centering device of the servo valve core of the utility model adopts the piston cylinder top dead center positioning mode to accurately position the middle position of the servo valve core, thereby effectively eliminating the defect that the servo valve core of the pump control system can not accurately return to the middle position to cause the rudder running phenomenon; the servo valve core centering device adopts a thread fixing form at the joint of the servo valve core centering device and the servo valve core, can conveniently and permanently adjust the position of the servo valve core centering in the installation and use processes, effectively eliminates the defect that the original adjusting mechanism can only be temporarily adjusted, and also eliminates the defects of large workload and need of navigation when the center position is permanently adjusted.

Drawings

FIG. 1 is a schematic structural diagram of a servo valve core centering device of a pump control system of a pump control type marine steering engine;

FIG. 2 is a schematic diagram showing the action of a servo valve core centering device of a pump control system of a pump control type marine steering engine;

FIG. 3 is a schematic diagram of a process of a servo valve core returning mechanism in a servo valve core returning device of a pump control system of a pump control type marine steering engine for returning the servo valve core to a neutral position.

In the figure: 1. a housing; 2. a piston cylinder; 3. a piston; 4. a piston guide rod; 5. a piston chassis 6, a piston spring; 7. a valve core connecting rod; 8. a first piston rod; 9. a second piston connecting rod; 10; a hinge; 11. a first link sleeve; 12. a second link sleeve; 13. a first link sleeve drive; 14. the second connecting rod sleeve is driven; 15. a valve core connecting rod base; 16. a first spool link bearing; 17. a second spool link bearing; 18. the first centering device is connected with the base; 19. the second centering device is connected with the base; 20. a first connecting bolt; 21. a second connecting bolt; 22. an adjustment sleeve; 23. an adjusting ring; 24. the adjusting sleeve is fixed on the base; 25. fixing a nut; 26. a servo spool arrangement housing; A. a servo valve core centering mechanism; B. servo valve core adjustment mechanism.

Detailed Description

With reference to the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below.

Example (b): referring to fig. 1-3, the present invention provides a technical solution: the centering device of the servo valve core of the pump control system of the steering engine for the pump control type ship comprises a shell 1, a centering mechanism A of the servo valve core and a regulating mechanism B of the servo valve core arranged at the left end of the centering mechanism A of the servo valve core, wherein the centering mechanism A of the servo valve core comprises a valve core connecting rod base 15, a valve core connecting rod 7, a first connecting rod sleeve 11, a second connecting rod sleeve 12, a first piston connecting rod 8 and a piston assembly, the left end and the right end of part of the valve core connecting rod 7 positioned in the shell 1 are respectively sleeved with the first connecting rod sleeve 11 and the second connecting rod sleeve 12, the opposite ends of the first connecting rod sleeve 11 and the second connecting rod sleeve 12 are respectively connected with a first connecting rod sleeve driving 13 and a second connecting rod sleeve driving 14 which are sleeved on the outer surface of the valve core connecting rod 7 in a driving mode, and the bottom ends of the first connecting rod sleeve driving 13 and the second connecting rod sleeve driving 14 are arranged on the valve core connecting rod base 15 in a sliding mode, hinges 10 are fixedly arranged on the first connecting rod sleeve 11 and the second connecting rod sleeve 12, each hinge 10 is hinged to the bottom ends of the first piston connecting rod 8 and the second piston connecting rod 9 respectively, and the top ends of the first piston connecting rod 8 and the second piston connecting rod 9 are connected to piston components fixed on the inner top surface of the shell 1 respectively. Specifically, the left end of the valve core connecting rod 7 is connected with the servo valve core, and the right end of the valve core connecting rod is connected with the original LVDT.

In this embodiment, a second centering device connecting base 19 is fixedly disposed on the right side surface of the bottom of the housing 1, and the connecting base 19 is connected to the LVDT by using a plurality of second connecting bolts 21; specifically, the left end of the spool link 7 is connected to the servo spool.

In this embodiment, both ends of the valve core link 7 penetrate through the housing 1 and extend out, and a first valve core link bearing 16 and a second valve core link bearing 17 are respectively arranged between the valve core link 7 and the contact ends on the left side and the right side of the housing 1.

In this embodiment, the piston assembly includes piston cylinder 2, piston 3 and piston spring 6, piston cylinder 2 is fixed to be set up on the internal top surface of casing 1, the adaptation slides and is provided with piston chassis 5 in the piston cylinder 2, fixedly connected with piston 3 on the top surface of piston chassis 5, and the both sides of piston 3 are connected with the top of first piston connecting rod 8 and second piston connecting rod 9 mutually articulated respectively, be connected with piston spring 6 between the bottom surface of piston chassis 5 and the internal bottom surface of piston cylinder 2, the fixed one end that is provided with piston guide rod 4 of central point of the internal bottom surface of piston cylinder 2, the other end of piston guide rod 4 passes piston chassis 5 and stretches into in the guiding hole of piston 3.

In this embodiment, the servo valve core adjusting mechanism B includes an adjusting sleeve 22 and an adjusting ring 23, the adjusting sleeve 22 is fitted on the outer surface of the left part of the valve core link rod 7 of the casing 1, an adjusting sleeve fixing base 24 is fixedly disposed at the left end of the adjusting sleeve 22, a fixing nut 25 is fixed on the right side surface of the adjusting sleeve fixing base 24, the left end of the adjusting sleeve fixing base 24 is mounted on a servo valve core device casing 26, the adjusting sleeve 23 is fitted on the outer surface of the adjusting sleeve 22, a first centering device connecting base 18 is fixedly disposed at the right end of the adjusting sleeve 22, and the first centering device connecting base 18 is fixedly connected with the adjusting sleeve fixing base 24 and the servo valve core device casing 26 through the first connecting bolt 20.

In specific implementation, referring to fig. 2, when the servo valve core moves leftward by an acting force, the servo valve core drives the valve core connecting rod 7 to move leftward, the first valve core connecting rod sleeve 13 drives the first connecting rod sleeve 11 to move leftward, the first connecting rod sleeve 11 drives the piston 3 to move downward in the piston cylinder 2 along the piston guide rod 4 through the hinge 10 and the first piston connecting rod 8, and the piston 3 drives the piston chassis 5 to move downward to compress the piston spring 6; as the piston 3 moves downwards, the second connecting rod sleeve 14 is driven to move rightwards by the hinge 10 and the second piston connecting rod 9; fig. 3 shows that when the servo valve core loses acting force, the piston spring 6 releases elastic potential energy to move upwards, the piston chassis 5 pushes the piston 3 to move upwards, the piston 3 drives the first connecting rod sleeve 11 to move rightwards through the hinge 10 and the first piston connecting rod 8, the first connecting rod sleeve 11 pushes the first connecting rod sleeve to drive the first connecting rod sleeve 13 to move rightwards, the first connecting rod sleeve drive 13 and the valve core connecting rod 7 move rightwards together, so as to drive the servo valve core to move rightwards, when the piston 3 reaches a top dead center, the valve core connecting rod 7 drives the servo valve core to move rightwards to stop, and the servo valve core returns to a middle position.

When the servo valve core moves rightwards through acting force, the principle is the same as that of leftwards application; the servo valve core pushes the valve core connecting rod 7 to move rightwards, the second valve core connecting rod sleeve drives 14 to drive the second connecting rod sleeve 12 to move rightwards, the second connecting rod sleeve 12 drives the piston 3 to move downwards in the piston cylinder 2 along the piston guide rod 4 through the hinge 10 and the second piston connecting rod 9, and the piston 3 drives the piston chassis 5 to move downwards to compress the piston spring 6; as the piston 3 moves downwards, the first connecting rod sleeve 11 is driven to move leftwards by the hinge 10 and the first piston connecting rod 8; when the servo valve core loses acting force, the piston spring 6 releases elastic potential energy to move upwards, the piston 3 is pushed to move upwards through the piston chassis 5, the piston 3 drives the second connecting rod sleeve 12 to move leftwards through the hinge 10 and the second piston connecting rod 9, the second connecting rod sleeve 12 pushes the second connecting rod sleeve to drive the second connecting rod sleeve 14 to move leftwards, the second connecting rod sleeve drive 14 and the valve core connecting rod 7 move leftwards together to drive the servo valve core to move leftwards, when the piston 3 reaches a top dead center, the valve core connecting rod 7 drives the servo valve core to move rightwards to stop, and the servo valve core returns to a middle position.

The servo valve core adjusting mechanism B can adjust the middle position of the servo valve core, when the piston 3 in the servo valve core centering mechanism A is at the top dead center, the servo valve core is not at the middle position, and the middle position of the servo valve core can be adjusted through the servo valve core adjusting mechanism B; the servo valve core centering mechanism shell 1 and the first centering device connecting base 18 are integrated, the adjusting sleeve 22 and the adjusting sleeve fixing base 24 are integrated, the adjusting sleeve 22 is provided with threads, the adjusting ring 23 is provided with threads matched with the adjusting sleeve 22 and screwed on the adjusting sleeve 22, the first connecting bolt 20 penetrates through the first centering device connecting base 18 and the adjusting sleeve fixing base 24 and is screwed in the servo valve core device shell 26, and the fixing nut 25 and the first connecting bolt 20 are matched and screwed on the first connecting bolt 20.

When the position of the middle position of the servo valve core is adjusted, the fixing nut 25 is rotated rightwards, the first connecting bolt 20 is rotated rightwards for a certain distance, the servo valve core centering mechanism shell 1 is in a free moving state, the valve core connecting rod 7 in the servo valve core centering mechanism shell 1 drives the servo valve core to move, the position of the adjusting ring 23 is adjusted to determine the position of the servo valve core centering mechanism shell 1, the servo valve core is adjusted to be in the middle position, after the middle position of the servo valve core is adjusted, the first connecting bolt 20 is tightened, the fixing nut 25 is tightened, and the adjusting ring 23 and the first connecting bolt 20 can fix the position A of the servo valve core adjusting mechanism.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The marine steering wheel pump control system servo case of pump accuse returns device of putting, it includes casing (1), servo case and returns well mechanism (A) and set up in servo case adjustment mechanism (B) of mechanism (A) left end, its characterized in that return to servo case: the servo valve core centering mechanism (A) comprises a valve core connecting rod base (15), a valve core connecting rod (7), a first connecting rod sleeve (11), a second connecting rod sleeve (12), a first piston connecting rod (8) and a piston assembly, wherein the left end and the right end of a part of the valve core connecting rod (7) positioned in the shell (1) are respectively sleeved with the first connecting rod sleeve (11) and the second connecting rod sleeve (12), one opposite ends of the first connecting rod sleeve (11) and the second connecting rod sleeve (12) are respectively connected with a first connecting rod sleeve drive (13) and a second connecting rod sleeve drive (14) which are sleeved on the outer surface of the valve core connecting rod (7) in a driving mode, the bottom ends of the first connecting rod sleeve drive (13) and the second connecting rod sleeve drive (14) are arranged on the valve core connecting rod base (15) in a sliding mode, hinges (10) are fixedly arranged on the first connecting rod sleeve (11) and the second connecting rod sleeve (12), each hinge (10) is hinged to the bottom ends of the first piston connecting rod (8) and the second piston connecting rod (9) respectively, and the top ends of the first piston connecting rod (8) and the second piston connecting rod (9) are connected to the piston assembly fixed on the inner top surface of the shell (1) respectively.

2. The steering engine pump control system servo valve core centering device for the pump-controlled ship according to claim 1, wherein: and a second centering device connecting base (19) is fixedly arranged on the right side surface of the bottom of the shell (1), and the connecting base (19) is connected with the LVDT through a plurality of second connecting bolts (21).

3. The steering engine pump control system servo valve core centering device for the pump-controlled ship according to claim 2, wherein: two ends of the valve core connecting rod (7) penetrate through the shell (1) and extend out, and a first valve core connecting rod bearing (16) and a second valve core connecting rod bearing (17) are arranged between the valve core connecting rod (7) and contact ends of the left side and the right side of the shell (1) respectively.

4. The steering engine pump control system servo valve core centering device for the pump-controlled ship according to claim 3, wherein: the piston component comprises a piston cylinder (2), a piston (3) and a piston spring (6), the piston cylinder (2) is fixedly arranged on the inner top surface of the shell (1), a piston chassis (5) is arranged in the piston cylinder (2) in a matching and sliding manner, the top end surface of the piston chassis (5) is fixedly connected with the piston (3), and the two sides of the piston (3) are respectively hinged with the top ends of the first piston connecting rod (8) and the second piston connecting rod (9), the piston spring (6) is connected between the bottom end surface of the piston chassis (5) and the inner bottom surface of the piston cylinder (2), one end of a piston guide rod (4) is fixedly arranged at the central position of the inner bottom surface of the piston cylinder (2), the other end of the piston guide rod (4) penetrates through the piston chassis (5) and extends into a guide hole of the piston (3).

5. The steering engine pump control system servo valve core centering device for the pump-controlled ship according to claim 1, wherein: the servo valve core adjusting mechanism (B) comprises an adjusting sleeve (22) and an adjusting ring (23), the adjusting sleeve (22) is fittingly sleeved on the outer surface of the valve core connecting rod (7) which is arranged on the left side of the shell (1), an adjusting sleeve fixing base (24) is fixedly arranged at the left end of the adjusting sleeve (22), and the right side surface of the adjusting sleeve fixing base (24) is fixed with a fixing nut (25), the left end of the adjusting sleeve fixing base (24) is arranged on a servo valve core device shell (26), the adjusting ring (23) is sleeved on the outer surface of the adjusting sleeve (22) in a matching way, the right end of the adjusting sleeve (22) is fixedly provided with a first centering device connecting base (18), the first centering device connecting base (18), the adjusting sleeve fixing base (24) and the servo valve core device shell (26) are fixedly connected in a matched mode through a first connecting bolt (20).