KR20170000952U

KR20170000952U - Steering gear

Info

Publication number: KR20170000952U
Application number: KR2020150005908U
Authority: KR
Inventors: 김지연; 이보협
Original assignee: 훌루테크 주식회사
Priority date: 2015-09-04
Filing date: 2015-09-04
Publication date: 2017-03-14

Abstract

The present invention relates to a steering wheel having a structure of a guide brook provided with a guide member for preventing a ram from rotating in a circumferential direction, comprising: a ram linearly reciprocated by a hydraulic cylinder; And a guide bar disposed to be spaced apart from the ram, and a guide bracket fixed to the ram to support the guide bar.
The guide bracket includes a support portion fixed to a portion of the outer surface of the ram opposite to the guide bar, and a through hole formed so as to cover the upper surface of the guide bar and protrude from the upper end of the support portion, A lower plate protruding from a lower end of the support portion and having a through hole formed to cover a bottom surface of the guide bar and passing through the upper and lower portions of the guide plate, And a plurality of guide members for supporting the sliding movement of the guide bars while being in contact with the upper and lower surfaces of the bars, respectively.
According to the present invention, there is an effect that frictional resistance between the guide bar and the guide brooket can be reduced through a guide member provided in the guide brook.

Description

Steering gear

The present invention relates to a steering wheel, and more particularly, to a structure of a guide brook which prevents rotation of a steering wheel in a circumferential direction, thereby improving frictional resistance and facilitating maintenance. This is about a new type of steering.

Generally, a steering gear used for a ship is a device for changing the course of a ship by controlling the direction or angle of a rudder disposed at the bottom rear portion of the ship. There are various types of steering gears, but most of the steering gears used in ships are of the hydraulic type. In addition, the steering gear may be largely divided into a ram type and a rotary vane type.

Here, the ram-type steering gear is constituted such that hydraulic cylinders in which the rams are inserted are arranged in an even line and a tiller connected to the ram and the rudder is connected as a ram pin or a rapson slide shoe will be.

Therefore, when the hydraulic fluid is supplied to the hydraulic cylinder and the ram is linearly reciprocated in the horizontal direction, the ramp pin and the roller bearing mounted on the ram transmit the linear movement force of the ram to the tiller, The rudder stock provided on the tiller is rotated to adjust the direction of the rudder.

In such a configuration, a phenomenon that the ram rotates in a circumferential direction by rotation of the tiller occurs.

In this connection, in Korean Patent No. 10-1126959, a falling-off prevention ring is fixed to a central large-diameter portion of a ram shaft, and the falling-off ring is guided along a horizontal guide rod so that the above- have.

However, in the above-described conventional steering gear, it is difficult to reduce the frictional resistance between the two metals in a state where a force for rotating the ram in the circumferential direction is applied to a collapsing chamber and a horizontal guide rod.

As a result, the necessity of maintenance is emphasized due to the friction between the two metals. However, since the structure is complicated as a whole, the maintenance work can not be smoothly performed and the overall mechanical efficiency of the steering gear may be lowered.

Registration No. 10-1126959

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the problems of the prior art as described above and it is an object of the present invention to provide a guide bar which is spaced apart from a ram and a guide brook which is fixed to the ram and supports the guide bar, The present invention provides a structure in which a guide member is provided in a space between a brooket and a guide bar to prevent a circumferential rotation of the ram and reduce a frictional resistance between the guide brook and the guide bar, .

Another object of the present invention is to provide a helicopter having a structure of a new type of guide brook which can replace a guide member fastened to a guide brook by a simple screw operation.

The steering gear according to the present invention comprises a ram which is linearly reciprocated by a hydraulic cylinder, a guide bar which is installed along the longitudinal direction of the ram and spaced apart from the ram, a guide which is fixed to the ram, The guide bar includes a support portion fixed to a portion of the outer surface of the ram that faces the guide bar, and a guide portion protruding from an upper end of the support portion so as to cover the upper surface of the guide bar. A lower plate protruding from a lower end of the support portion and having through holes formed to cover the bottom surface of the guide bar and passing through the upper and lower portions of the guide plate, Each vertically penetrating, As each contact on the top surface and the bottom surface of the guide bar comprises a plurality of guide members for supporting the sliding movement of the guide bar.

Wherein each of the guide members is threadedly coupled to the through holes of the respective plates and is adjustable in height and height, and the guide members are interchangeably coupled to the ends of the screw threads, And a contact end made of Teflon which is in contact with the bottom surface, respectively.

And coupling grooves and coupling protrusions corresponding to the mutually corresponding shapes are formed on the opposite surfaces between the thread end and the contact end, and are fitted to each other.

According to the steering apparatus according to the present invention, the guide bracket is provided so as to support the guide bar which is fixedly mounted on the ram and is disposed so as to be spaced apart from the ram. The friction between the guide brook and the guide bar through the guide member provided in the guide brook There is an effect that the resistance can be reduced.

In addition, since the guide member provided in the guide brook can be easily replaced by a simple screw operation of the user, the maintenance can be easily performed, and therefore, the mechanical efficiency of the entire steering gear can be expected to be improved.

1 is a perspective view showing a structure of a steering wheel according to an embodiment of the present invention;
2 is a partial perspective view of a steering gear according to an embodiment of the present invention;
3 is a perspective view showing the configuration of a guide brook according to an embodiment of the present invention;
4 is a perspective view showing a configuration of a guide member according to an embodiment of the present invention;
5 is a perspective view showing a state in which a guide member according to an embodiment of the present invention is coupled to a through hole;
6 is a front sectional view of a guide brook according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show the configuration of the steering gear according to the present invention in a perspective view.

As shown in these figures, the steering gear according to the present invention comprises a ram 20, a guide bar 40, and a guide brook 100.

The ram 20 is made of a circular rod, and is linearly reciprocated by the operation of the hydraulic cylinder 10 while being arranged in pairs so as to face each other on a straight line. The tilter 30 is formed in a flat plate shape and serves to rotate the ladder stock 32 by receiving the movement force of the ram 20 through the ramp pin 22.

The guide bar 40 has a shape extending straight along the longitudinal direction of the ram 20 and is formed at a predetermined distance from the ram 20 so that one side of the guide bar 40 passes through the inside of the guide brook 100 do.

The guide brook 100 will be described in more detail with reference to FIG.

FIG. 3 is a perspective view of the configuration of the guide brook 100.

The guide bellows 100 includes a support 110 fixed to a portion of the outer surface of the ram 20 opposed to the guide bar 40, A lower plate 130 protruding from the lower end of the support part 110 and covering the bottom surface of the guide bar 40; And a plurality of guide members 150 passing through the guide bars 40, 120, and 130 to support the sliding movement of the guide bars 40 while being in contact with the guide bars 40.

Specifically, the support portion 110 is formed of a flat plate, and fastening holes 102 are formed at both right and left ends. By fastening the bolt through the fastening hole 102, the support portion 110 is fixed to the front surface of the ram 20.

Through holes 121 and 131 are formed in the upper plate 120 and the lower plate 130. The through holes 121 and 131 pass through the plates 120 and 130 vertically and have a thread formed in the inner diameter thereof to receive the guide member 150. [

Fig. 4 is a perspective view showing the construction of the guide member according to the embodiment of the present invention.

The guide member 150 includes a screw thread 152 screwed into the through holes 121 and 131 of the respective plates 120 and 130 and a screw thread 152 screwed on the end of the screw thread 152 And a contact end 154 which penetrates the through holes 121 and 131 of the plates 120 and 130 and contacts the upper and lower surfaces of the guide bar 40, respectively.

The threaded portion 152 includes a thread groove and a thread, and a coupling groove 153 for receiving the contact end 154 is provided at the center of the bottom.

The contact end 154 includes a coupling protrusion 155 for insertion into the coupling groove 153 of the threaded end 152 at the center of the upper end. It is preferable that the contact end 154 is made of a Teflon material which is rigid and has a small friction coefficient.

Figures 5 and 6 show a guide brook according to an embodiment of the present invention in perspective and front cross-sectional views, respectively.

As shown in these drawings, the guide member 150 is completely engaged with the through holes 121 and 131 of the plates 120 and 130, and the guide members 150 are inserted into the through holes 121 and 131 of the plates 120 and 130, And the contact ends 154 of the guide members 140 protrude from the upper and lower surfaces of the guide bar 40, respectively.

The outer shape of the guide brook 100 having such a structure can be modified into various shapes that are not shown in the present invention but can be fixed while receiving the guide bar 40.

Hereinafter, the operation and maintenance procedure of the guide brook among the steering gears according to the present invention having the above-described configuration will be described.

First, the ram 20 is maintained at the neutral position in the initial state where the operation of the hydraulic cylinder 10 is not performed, and the tiller 30 is also maintained at the neutral position.

The contact end 154 of the guide member 150 passes through the plates 120 and 130 and is held in contact with the upper and lower surfaces of the guide bar 40.

In this state, when the ram 20 reciprocates linearly by the operation of the hydraulic cylinder 10, the ram 20 is horizontally moved in accordance with the operation into the hydraulic cylinder 10, Rotate left or right. During this operation, the guide bar (40) is supported by the guide brook (100) to inhibit the rotation of the ram (20). That is, the guide broom 100 supports the sliding movement of the guide bar 40, thereby restricting the rotational motion of the ram 20, thereby performing only a linear reciprocating motion.

On the other hand, when the ram 20 is horizontally reciprocated as described above, the contact end 154 of the guide member 150 is gradually worn outward due to friction with the guide bar 40. Such abrasion causes the contact end 154 to lower the supporting force for supporting the guide bar 40, so that the contact end 154 should be replaced if it is worn out to some extent.

When the contact end 154 is replaced, the guide member 150 is first separated from the guide brook 100. Then, the worn contact end 154 is separated from the thread end 152 and replaced with a new contact end 154, and then the guide member 150 is repaired again by the guide brook 100 to perform maintenance . The replacement of the contact end 154 is performed by attaching and detaching the engagement protrusion 155 of the contact end 154 inserted in the engagement groove 153 formed in the thread end 152. [

Thus, it is easy to perform the maintenance work for checking and replacing the wear state of the guide member 150 even between the complex internal components of the steering wheel that are organically coupled to the periphery of the guide brook 100 and interact with each other. As a result, not only the guide bellows 100 but also the mechanical efficiency of the entire steering apparatus can be expected to be increased.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications will be possible to those skilled in the art based on the present invention. Therefore, the embodiments disclosed in this specification are intended to illustrate rather than limit the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

10. Hydraulic cylinder 20. Ram
22. Lamphine 30. Tiller
32. Rudder Stock 40. Guide Bar
100. Guide brook 102. Fasteners
110. Support 120. Upper plate
121. Fastening ball 130. Lower plate
131. Fastening Ball 140. Fastening Ball
150. Guide member 152. Nodal
153. Joining groove 154. Joining projection
155. Coupling projection

Claims

A guide bar 40 disposed along the longitudinal direction of the ram 20 and spaced apart from the ram 20; And a guide bracket (100) fixed to the guide bar (20) and adapted to support the guide bar (40)
The guide brook (100)
A support 110 fixed to a portion of the outer surface of the ram 20 opposed to the guide bar 40,
An upper plate 120 formed to cover the upper surface of the guide bar 40 while protruding from the upper end of the support part 110 and having a through hole 121 passing through the upper part and the lower part,
A lower plate 130 formed to cover the bottom surface of the guide bar 40 while being protruded from the lower end of the support part 110 and having a through hole 131 penetrating through the guide bar 40,
A plurality of guide members for vertically penetrating the through holes 121 and 131 of the plates 120 and 130 and supporting the sliding movement of the guide bar 40 while being partially in contact with the upper and lower surfaces of the guide bar 40, (150). &Lt; / RTI >

The method according to claim 1,
Each of the guide members (150)
A screw thread 152 screwed to the through holes 121 and 131 of the plates 120 and 130 and adjustable in height,
And a Teflon-made contact end which is inserted into the through holes 121 and 131 of the plates 120 and 130 so as to be in contact with the upper and lower surfaces of the guide bar 40, And a steering wheel.

3. The method of claim 2,
On the opposing face between the threaded end 152 and the contact end 154,
And an engaging groove (153) and an engaging projection (155) having a shape corresponding to each other are formed and fitted to each other.