KR200481726Y1

KR200481726Y1 - Gear pitch check and center line marking device

Info

Publication number: KR200481726Y1
Application number: KR2020150002126U
Authority: KR
Inventors: 박영덕
Original assignee: 삼성중공업 주식회사
Priority date: 2015-04-03
Filing date: 2015-04-03
Publication date: 2016-11-04
Also published as: KR20160003544U

Abstract

A gear pitch check and centerline marking device is disclosed. According to an embodiment of the present invention, a gear pitch check and centerline marking apparatus includes a main body; A first inclined body having a first inclined face having the same inclination angle as any one of the two inclined faces of the gear teeth of the sub rack and projecting in one direction to the main body; And a second inclined surface having the same inclination angle as the other one of the two inclined surfaces of the gear teeth of the sub rack, wherein the second inclined surface protrudes from the main body in the same direction as the first inclined body, A second inclined body spaced apart from the first inclined body so as to face the first inclined body; And a marking body provided between the first inclined surface and the second inclined surface to indicate a center line of the gear teeth.

Description

[0001] Gear pitch check and center line marking device [

The present invention relates to a gear pitch check and centerline marking apparatus.

Racks and pinions are widely used as gears for converting rotational motion to linear motion or vice versa. The pinion is rotated about a predetermined rotation axis, and the rack engaged with the pinion performs a reciprocating linear motion in the longitudinal direction.

Such a rack is generally formed by a bar having a long length and a plurality of teeth which are engaged with the gear teeth of the pinion at regular intervals.

Korean Patent Laid-Open Publication No. 10-2004-0036096 also discloses a coupling structure of a rack and a pinion for converting rotational motion into linear motion.

Such rack gears are widely used in offshore structures such as ships and offshore plants. Due to the large size of offshore structures, racks are also required to be large in size. As a result, it is not easy to integrate the rack gear. As shown in FIG. 1, a plurality of sub racks are manufactured and assembled (welded) to manufacture a large rack gear.

1 is a view showing a method of assembling a large rack gear.

1, when the large rack gear is assembled, the first and second assembling surfaces 14 and 24 are brought into contact with each other at the time of assembling the plurality of sub racks 10 and 20, There is an inconvenience in confirming the gear pitch distance between the adjacent gear teeth 12, 22.

In order to accurately check the gear pitch distance, marking the center lines L1 and L2 adjacent to the gear teeth 12 and 22 adjacent to the assembled portion is also carried out between the inclined surfaces of the gear teeth 12 and 22 So that it is difficult to perform accurate marking.

The above background information is technical information acquired by the inventor for the purpose of deriving the invention or derived from the derivation of the invention, and can not necessarily be a known technology disclosed to the general public before the application of the invention.

Korean Patent Publication No. 10-2004-0036096

The present invention is able to mark the center line for the gear pitch check through the marking bars placed in the center between the two inclined bodies having the inclination corresponding to the gear teeth so that it is easy to check the gear pitch distance between the two subracks to be assembled A gear pitch check and a center line marking device.

Other objects of the present invention will be readily understood from the following description.

According to one aspect of the present invention, the main body; A first inclined body having a first inclined face having the same inclination angle as any one of the two inclined faces of the gear teeth of the sub rack and projecting in one direction to the main body; And a second inclined surface having the same inclination angle as the other one of the two inclined surfaces of the gear teeth of the sub rack, wherein the second inclined surface protrudes from the main body in the same direction as the first inclined body, A second inclined body spaced apart from the first inclined body so as to face the first inclined body; And a marking body provided between the first inclined surface and the second inclined surface to indicate a center line of the gear teeth.

Wherein the marking body comprises: a horizontal bar connecting the first inclined surface and the second inclined surface horizontally; And a vertical bar disposed perpendicular to the horizontal bar.

The vertical bar may be disposed in correspondence with a straight line connecting points of the distance to the first inclined surface and the distance to the second inclined surface.

The first inclined body and the second inclined body may have a first opening portion and a second opening portion, which are through-holes of a predetermined size, respectively.

The main body, the first inclined body, and the second inclined body may be integrally formed.

The gear pitch check is made from the distance between the center line of the gear teeth marked by the marking body and the center line marked on the gear teeth of the other sub rack in the process of assembling the sub rack with the other sub rack, .

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, the claims of utility model registration claims, and the detailed description of the design.

According to the embodiment of the present invention, it is possible to mark the center line for confirming the gear pitch through the marking bar placed at the center between the two inclined bodies having the inclined surfaces corresponding to the gear teeth, It is easy to check the pitch interval.

1 is a view showing a method of assembling a large rack gear,
2 is a perspective view of a gear pitch check and centerline marking apparatus according to an embodiment of the present invention;
3 is a view showing a state in which the gear pitch check and center line marking device shown in Fig. 2 are used. Fig.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It should be understood, however, that the appended claims are not intended to limit the invention to the particular embodiments, and that all changes, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the terms " part, "" module," and the like, which are described in the specification, mean a unit for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments within the scope of the technical idea of the present invention, It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. In the following description of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured.

FIG. 2 is a perspective view of a gear pitch check and centerline marking apparatus according to an embodiment of the present invention, and FIG. 3 is a view showing a state in which the gear pitch check and centerline marking apparatus shown in FIG. 2 are used.

2 and 3 show a gear pitch check and centerline marking apparatus 100, a main body 110, a first inclined body 120, a second inclined body 130, a first inclined face 122, The first barrel 132, the first opening 124, the second opening 134, the marking body 140, the horizontal bar 142, the vertical bar 144, the first sub rack 10, the first gear teeth 12 Are shown.

The gear pitch check and centerline marking apparatus 100 according to an embodiment of the present invention has a simple structure and is capable of easily marking the center line of the gear teeth. Further, it is possible to confirm whether the gear pitch in the assembled portion is correct by confirming the interval between the center lines of the gear teeth.

The gear pitch check and center line marking apparatus 100 according to the present embodiment includes a main body 110, a first inclined body 120, a second inclined body 130, and a marking body 140.

The main body 110 is a plate which is elongated in one shape.

The first inclined body 120 has a first inclined face 122 having an inclination angle substantially equal to one of two inclined faces of the gear teeth 12 and 22 of the sub racks 10 and 20 to be assembled.

The second inclined body 130 has a second inclined face 132 having an inclination angle substantially equal to the other one of the two inclined faces of the gear teeth 12 and 22 of the sub racks 10 and 20 to be assembled.

The first inclined body 120 and the second inclined body 130 protrude in the same direction on the main body 110. In this case, the first inclined body 122 and the second inclined body 132 are spaced apart from each other do.

Between the first inclined surface 122 and the second inclined surface 132 is provided a marking body 140 for indicating the center line of the gear teeth 12 and 22 and enabling center line marking.

The marking body 140 includes a horizontal bar 142 connecting the first inclined surface 122 and the second inclined surface 132 horizontally and a vertical bar 144 disposed perpendicularly to the horizontal bar 142 .

Here, the vertical bar 144 may be disposed corresponding to a straight line connecting points of the same distance between the first inclined plane 122 and the second inclined plane 132.

A first opening 124 may be formed in the first inclined body 120 and a second opening 134 may be formed in the second inclined body 130. The first opening 124 and the second opening 134 are through holes of a predetermined size formed to reduce the weight of the apparatus so that the operator can easily carry the apparatus and use the apparatus for the operation.

In this embodiment, the main body 110, the first inclined body 120, and the second inclined body 130 may be integrally formed. The material may be steel or stainless steel (SUS) For example, 3t.

Referring to FIG. 3, a use of the gear pitch check and centerline marking apparatus 100 according to the present embodiment is shown.

The gear pitch check and center line marking apparatus 100 are inserted into the gear teeth 12 located on the assembly surface 14 of the first sub rack 10 to be assembled. In this case, the first inclined surface 122 of the first inclined body 120 and the second inclined surface 132 of the second inclined body 130 have an inclination angle substantially equal to that of the two inclined surfaces of the gear teeth 12, .

The vertical bar 144 of the marking body 140 is positioned corresponding to the centerline of the gear teeth 12 and a line along the vertical bar 144 or along a straight line extending the vertical bar 144 By marking, the center line marking of the gear teeth 12 can be made (see L1).

The same operation can be performed for the second sub rack 20 and the distance between the center lines marked between the gear teeth 12 and 22 adjacent to each other at the time of assembling is smaller than the distance between the other gear teeth of the sub rack 10 or 20 It is possible to check the degree of gear pitch.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as set forth in the following claims It will be understood that the invention may be modified and varied without departing from the scope of the invention.

10: first sub rack 20: second sub rack
12: first gear teeth 22: second gear teeth
14: first assembly surface 24: second assembly surface
100: Gear pitch check and center mark marking device
110: main body 120: first inclined body
122: first inclined surface 124: first opening
130: second inclined body 132: second inclined plane
134: second opening portion 140: marking body
142: horizontal bar 144: vertical bar

Claims

Main body;
A first inclined body having a first inclined face having the same inclination angle as any one of the two inclined faces of the gear teeth of the sub rack and projecting in one direction to the main body;
And a second inclined surface having the same inclination angle as the other one of the two inclined surfaces of the gear teeth of the sub rack, the second inclined surface protruding from the main body in the same direction as the first inclined body, A second inclined body spaced apart from the first inclined body so as to face the first inclined body; And
And a marking body provided between the first inclined surface and the second inclined surface and showing a center line of the gear teeth,
Wherein the marking body comprises: a horizontal bar connecting the first inclined surface and the second inclined surface horizontally; And a vertical bar disposed perpendicular to the horizontal bar,
Wherein the vertical bar is disposed in correspondence with a straight line connecting points of the distance to the first inclined surface and the distance to the second inclined surface,
The first inclined body and the second inclined body are each formed with a first opening and a second opening, which are through-holes of a predetermined size for weight reduction and simplification of transportation,
In the process of assembling the sub rack with the other sub rack to produce a large rack gear,
The gear teeth marked with a center line by the marking body are gear teeth that are closest to the other sub rack at the time of assembly,
And a gear pitch check and centerline marking device that makes it possible to check the gear pitch from the distance between the center line of the gear teeth of the sub rack marked by the marking body and the center line marked on the gear teeth of the other sub rack.

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The method according to claim 1,
Wherein the main body, the first inclined body, and the second inclined body are integrally formed.

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