JPH04110699U - Hydraulic cylinder steering gear - Google Patents

Abstract

(57) [Summary] [Purpose] When excessive impact force is applied to the rudder body and steering gear, the impact force is rapidly alleviated to ensure the protection and safety of the rudder body and steering gear. The purpose of this invention is to provide a hydraulic cylinder type steering gear that can perform the following tasks. [Configuration] A relief valve 18 between the supply pipe and the return pipe, a double relief valve 19 between the working hydraulic pipe and the drain pipe, and a check valve 20 with a double pilot installed in the working hydraulic pipe and the drain pipe.
and a hydraulic electromagnetic switching valve 6 are arranged in the vicinity of the steering hydraulic cylinders 10 and 12 in a unit with the steering hydraulic cylinders.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention provides a hydraulic oil supply pipe and a return pipe between the hydraulic oil tank and the hydraulic solenoid switching valve. and an operating hydraulic pipe between the hydraulic electromagnetic switching valve and the steering hydraulic cylinder. The present invention also relates to a hydraulic cylinder type steering gear provided with an oil drain pipe.

0002

[Conventional technology]

Conventionally, this type of hydraulic cylinder type steering gear has a hydraulic oil tank and a hydraulic electromagnetic cutter. Relief to prevent abnormally high pressure of hydraulic oil between the replacement valve and overload of the motor A dazzling valve is installed to alleviate abnormally high pressure between the valve or hydraulic solenoid switching valve and the steering hydraulic cylinder. Double pilot prevents oil from flowing in and out of the bull relief valve and steering hydraulic cylinder. Hydraulic oil valves such as check valves with and was placed near the hydraulic oil tank.

0003

[Problem that the idea aims to solve]

In the above-mentioned conventional example, an abnormality occurs especially between the hydraulic solenoid switching valve and the steering hydraulic cylinder. Hydraulic oil with a double relief valve separated from the steering hydraulic cylinder to relieve high pressure Because it is located near the tank, excessive impact force is applied to the rudder body and steering gear, causing hydraulic pressure. If abnormal high pressure occurs in the oil path between the electromagnetic switching valve and the steering hydraulic cylinder, It takes time to release the pressure and alleviate the impact force, causing damage to the rudder body and steering gear. There was a risk of interference.

0004 The present invention was made in view of these problems of the conventional technology. The purpose of this is to place the hydraulic oil valves near the steering hydraulic cylinder. By placing it in the unit with a hydraulic cylinder, it can quickly respond to the impact force. Hydraulic series that can protect the rudder body and steering gear and ensure safety. The purpose of this project is to provide a driver-type steering gear.

[0005]

[Means to solve the problem]

In order to achieve the above objective, the hydraulic cylinder type steering gear in the present invention uses hydraulic oil. A relief valve between a supply pipe and a return pipe provided between the tank and the hydraulic solenoid switching valve, and the hydraulic Double lily between the operating hydraulic pipe and oil drain pipe installed between the electromagnetic switching valve and the steering hydraulic cylinder. - check valve with double pilot installed in the operating hydraulic pipe and oil drain pipe, and the oil A hydraulic oil valve consisting of a piezoelectric switching valve is placed near the steering hydraulic cylinder. It is characterized by being arranged in a unit with a hydraulic cylinder for use.

[0006]

[Effect]

Since it is a hydraulic cylinder type steering gear configured as described above, the rudder itself and the steering Excessive impact force is applied to the aircraft, causing damage to the oil passage between the hydraulic solenoid switching valve and the steering hydraulic cylinder. When abnormally high pressure occurs, the pressure is transferred to the low pressure oil line through the double relief valve. The impact force is relieved by the relief, but the double relief valve Because it is located near the main hydraulic cylinder, the abnormally high pressure is quickly relieved and the rudder body and rudder are damaged. The machine is protected. Further, the hydraulic oil valves are connected to the steering hydraulic cylinder. Since it is placed on the cylinder and unit, it can be easily installed.

[0007]

【Example】

An embodiment of this invention will be described with reference to FIGS. 1 to 3. Figure 1 is a schematic diagram of a hydraulic circuit. In Figure 1, 1 is a hydraulic oil tank. The hydraulic oil in the hydraulic oil tank 1 passes through a suction filter 2 and is driven by an electric motor 3. The water is drawn into the hydraulic pump 4, where it is pressurized and sent out.

[0008] The hydraulic oil sent out by the hydraulic pump 4 is supplied to the hydraulic solenoid switching valve via the supply pipe 5. 6 and communicates with the return pipe 7 according to the operating switching position of the hydraulic electromagnetic switching valve 6 (not shown). condition), and connects to pipe 8 or 9, which constitutes the working hydraulic pipe and the oil drain pipe.

[0009] From the state shown in Fig. 1, the hydraulic solenoid switching valve 6 is moved to the right side in the figure by steering operation on the bridge. , the hydraulic oil from supply pipe 5 passes through pipe 8 (which becomes the hydraulic pressure pipe), and the oil It is press-fitted into the rear chamber 11 of the pressure cylinder 10 and the front chamber 13 of the hydraulic cylinder 12, and the hydraulic cylinder The oil in the front chamber 14 of the cylinder 10 and the rear chamber 15 of the hydraulic cylinder 12 is drained from the pipe 9 (which serves as an oil drain pipe). ) is discharged into the hydraulic oil tank 1 via the hydraulic solenoid switching valve 6 and the return pipe 7. As a result, the rod 16 of the hydraulic cylinder 10 moves forward, and the rod 17 of the hydraulic cylinder 12 moves forward. After moving backward, the rudder is rotated by a mechanism described later.

0010 From the state shown in Fig. 1, the hydraulic solenoid switching valve 6 is moved to the left side in the figure by steering operation. Then, the hydraulic oil from the supply pipe 5 passes through the pipe 9 (which becomes the hydraulic pressure pipe) and is supplied to the hydraulic cylinder 1. 0 and the rear chamber 15 of the hydraulic cylinder 12. The oil in the chamber 11 and the front chamber 12 of the hydraulic cylinder 12 is drained from the hydraulic power line through the pipe 8 (which serves as an oil drain pipe). The hydraulic oil is discharged into the hydraulic oil tank 1 via the magnetic switching valve 6 and the return pipe 7. The rod 16 of the cylinder 10 is retracted and the rod 17 of the hydraulic cylinder 12 is advanced.

[0011] There is a space between the supply pipe 5 and the return pipe 7 to prevent abnormally high pressure in the hydraulic oil circuit and to connect the electric motor 3. A relief valve 18 is arranged to prevent overload of If abnormal high pressure occurs in either of the two pipes, there is a gap between the pipes 8 and 9 that A double relief valve 19 is arranged to release the pressure of the pipe 8 and the pipe to the other side. 9 only when the hydraulic solenoid switching valve 6 is activated and pressure oil is sent by the hydraulic pump 4. The passage is open and steering is possible, and the rudder angle does not change at any other time. Equipped with a double pilot to close the circuit and stop oil from flowing in and out of the hydraulic cylinder. A check valve 20 is arranged. And these relief valves 18, double relief The valve 19, the double pilot check valve 20, and the hydraulic solenoid switching valve 6 are connected to the hydraulic cylinder 1. It is installed as a unit between 0 and 12.

0012 In Fig. 1, 21 is an oil level gauge, 22 is an oil pressure gauge, 23 is an air vent, and 24 is a front The plates 25, 26, 27, and 28 are for holding and passing the tubes 5, 7, 8, and 9, respectively. This is a flexible hose that connects cylinders 8 and 9 with cylinders 10 and 12.

[0013] Figures 2 and 3 are a plan view and a side view of one embodiment showing its arrangement, and an explanation of each part. are given the same reference numerals as in FIG. 1, and their explanation will be omitted.

[0014] In the figure, hydraulic cylinders 10 and 12 are mounted on a fixed base 30 with bearings 31, and each The tips of the piston rods 16 and 17 are attached to each end of the upper and lower rudder handles 32 by pins 33. are pivotally connected. A rudder shaft 34 is fixed to the center of the rudder handle 32. A rudder main body (not shown) is fixed to the lower part of the rudder shaft 34.

[0015] On the fixed base 30 are the relief valve 18, the double relief valve 19, and the double relief valve 18. Hydraulic oil valves such as check valve 20 with pilot and hydraulic solenoid switching valve 6 are combined with both oil It is arranged between the pressure cylinders 10 and 12.

[0016] In addition, 35 is an electric rudder angle transmitter that communicates the rudder angle to the bridge, and the rudder handle 32 The steering wheel is connected by a link 36, and the steering angle is determined by the position of the link 36. It has become.

[0017] In the hydraulic cylinder type steering gear with the above configuration, during steering or during steering If driftwood, sudden waves, etc. collide with the rudder body even when the rudder is stopped, the rudder body will absorb the impact force. Try to rotate with. The force is then transmitted to the rudder handle 32 via the rudder shaft 34. this Therefore, one piston rod of the hydraulic cylinders 10 and 12 is suddenly pressed (for example, (e.g. piston rod 16) the other piston rod is pulled suddenly (e.g. piston rod 16). Stone rod 17) Therefore, one chamber of the hydraulic cylinder 10 (for example, the rear chamber 1 1) and one chamber (for example, the front chamber 13) of the hydraulic cylinder 12, abnormally high pressure occurs, and the oil The other chamber of the pressure cylinder 10 (for example, the front chamber 14) and the other chamber of the hydraulic cylinder 12 ( For example, the pressure in the rear chamber 15) is low. As a result, the inside of one pipe (for example, pipe 8) instantly An abnormally high pressure state occurs, and the pressure inside the other pipe (for example, pipe 9) becomes low, but both pipes 8 and 9 A double relief valve 19 is arranged in between, and this valve 19 is connected to the steering hydraulic system. Because it is located near the cylinder, abnormally high pressure in one pipe (for example, pipe 8) will be affected by the double pipe. It is immediately released into the other pipe (for example, pipe 9) through the leaf valve 19, and the Remove abnormally high pressure.

[0018] Therefore, even if an abnormal impact force is applied to the rudder body, the impact force is quickly alleviated. Keys on the rudder body, rudder axle, steering gear, and their connecting parts caused by abnormal shocks -, damage to pins, etc. can be reduced.

[0019] In addition, the relief valve 18, double relief valve 19, double pilot check Hydraulic oil valves such as the valve 20 and the hydraulic solenoid switching valve 6 are combined into both hydraulic cylinders 10 and 1. The steering gear can be made more compact by placing it between the two and making it into a unit. I can do that.

[0020]

[Effect of the idea]

Since the present invention has the above-mentioned configuration, the hydraulic oil valves are integrated into the steering gear. Because it is built in, the piping becomes shorter, and the sudden impact force that the rudder body receives is quickly absorbed. This is transmitted to the double relief valve, and the delay in the operation of the double relief valve is small. Keys on the rudder body, rudder axle, steering gear, and their connecting parts caused by sudden impacts ―, It can reduce damage to pins, etc., and improve the safety of ship navigation. be able to.

[0021] In addition, the hydraulic oil valves are placed together near both hydraulic cylinders, and these are combined into a unit. This makes it possible to make the steering gear more compact and its installation easier. At the same time, it is possible to improve the steering performance.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a hydraulic circuit in a hydraulic cylinder type steering gear according to the present invention.

FIG. 2 is a plan view of essential parts of the hydraulic cylinder type steering gear according to the present invention.

FIG. 3 is a side view of essential parts of the hydraulic cylinder type steering gear according to the present invention.

[Explanation of symbols]

1 Hydraulic oil tank 5 Supply pipe 6 Hydraulic solenoid switching valve 7 Return pipe 8,9 Operating hydraulic pipe and oil drain pipe 10,12 Steering hydraulic cylinder 18 Relief valve 19 Double relief valve 20 Check valve with double pilot

Claims (1)

[Scope of utility model registration request] 1. A hydraulic oil supply pipe and a return pipe are provided between the hydraulic oil tank and the hydraulic electromagnetic switching valve, and a hydraulic oil pipe and an oil drain pipe are provided between the hydraulic electromagnetic switching valve and the steering hydraulic cylinder. In a hydraulic cylinder type steering gear provided with a relief valve between the supply pipe and the return pipe, a double relief valve between the working hydraulic pipe and the oil drain pipe, and a double relief valve provided in the working hydraulic pipe and the oil drain pipe. A hydraulic cylinder type rudder, characterized in that a hydraulic oil valve consisting of a check valve with a pilot and the hydraulic electromagnetic switching valve is arranged in the vicinity of the steering hydraulic cylinder and in a unit with the steering hydraulic cylinder. Take machine.