KR102376386B1 - Support Clamp for Rigid Bar - Google Patents

Abstract

The present invention relates to a support clamp for a rigid street-car line, which comprises: a hanger plate (40) which comes in close contact with an upper plate (32) of a rigid bar (30); a pair of channel clamps (50) which cover left and right edges of the upper plate (32) and the hanger plate (40), and face each other; a press-fit hole (51) which is formed in an upper part of the channel clamp (50) in a vertically penetrating manner; a press-fit nut (60) which is installed in the press-fit hole (51); a large lead tap hole (61) which is formed in the center of the press-fit nut (60); a flange (62) which is formed at a lower end of the press-fit nut (60), and is caught on a lower edge of the press-fit hole (51); a hollow bolt (70) which is screw-coupled to the press-fit nut (60), and has a large head male thread part (71), which corresponds to the large head tap hole (61), formed on the outer circumferential surface thereof; a polygonal head (72) which is formed on an upper end of the hollow bolt (70); a small lead tap hole (73) which is formed in the center of the hollow bolt (70), is formed in the same direction as the spiral direction of the large lead tap hole (61), and is formed to have a smaller distance per rotation than that of the large lead tap hole (61); a pair of T-grooves (41) which are formed on an upper surface of the hanger plate (40); a T-bolt (80) which is screw-coupled to the hollow bolt (70), and has a small lead male thread part (81), which corresponds to the small lead tap hole (73), formed on the outer circumferential surface thereof; and a T-head (82) which is formed at a lower end of the T-bolt (80), and is caught on the T-groove (41).

Description

Support Clamp for Rigid Bar

The present invention relates to a support clamp for a rigid catenary, and more particularly, to a support clamp for a rigid catenary capable of obtaining a strong fastening force.

In general, electric railways are in the spotlight as a public transportation means of urban subways and high-speed rails because they do not emit exhaust gas compared to other internal combustion engine transportation means, can operate quietly, and can operate at a gentle acceleration/deceleration and high speed.

With the opening of high-speed rail, electric rail, which is attracting attention as a new means of transportation in the future, is required to improve the performance, reliability and safety of electric rail due to the recent increase in speed, capacity, and shortening of operation time of electric rail.

Here, the catenary may be defined as a generic term for a track such as a catenary for supplying electric power in contact with a current collector of an electric vehicle running the track and equipment attached thereto.

Electricity required for driving an electric vehicle is supplied through a catenary and a pantograph, a power collector of the vehicle.

Specifically, the overhead catenary system may be divided into an overhead catenary system and a third rail system, and the overhead catenary system is further divided into a rigid body system and a suspension system.

Here, the suspension tank method is a method of connecting the catenary using a clad wire, and is generally applied to the ground section. Since the catenary, clad wire, and dropper ship must be wired together, and peripheral devices such as a tension control device are required, the required cabling height is high. , it is complicated and difficult to apply to the tunnel section.

In other words, in order to apply the suspension tank-type catenary to the tunnel section, the cross-sectional area of the tunnel must be significantly increased, which requires excessive construction costs and is difficult to maintain because the entry space is narrow due to the complicated structure.

The third rail type is a method of supplying power by installing a rail for feeding on the road surface or side, and has the advantage that it can be installed in a narrow space such as a tunnel. It is applied only to some special sections.

On the other hand, the rigid construction method is to integrate the catenary into the rigid body and install it using a separate structure such as a bracket, and it does not require a joist and does not require a separate tension maintenance device, so it is applied to a section with a narrow space, such as a tunnel. there is.

In fact, the height of the rigid catenary is about 90 to 120mm including the rigid body and the catenary, and the required height between the collecting contact of the catenary and the upper ceiling of the tunnel considering the support and electrical separation at low voltage (DC 750V or 1500V) is only about 500mm Do.

Therefore, the rigid catenary line requires a small space for installation, so the construction cost of a new tunnel can be greatly reduced, and the simple structure has a very advantageous advantage in the maintenance work inside the tunnel.

Rigid bar is expressed as R-Bar, and a rigid catenary with a shape similar to a T-shaped double cross section is specifically called T-Bar. The R-Bar is widely used because of its superior workability and current collecting performance compared to the T-Bar, but in Korea, the T-Bar is applied in the DC section and the R-Bar is applied in the AC section.

Since the rigid catenary has to act as a conductor that can supply electric power to the train, it is formed using an aluminum alloy that has excellent electrical conductivity and is lightweight. is designed by

As shown in the accompanying drawings, such a general rigid catenary is fed to the running train 10 through the catenary 16 in contact with the pantograph 11 installed on the upper part of the train 10, The catenary 16 is installed under the rigid bar 12 as shown in FIG. 2 , and the rigid bar 12 is connected to the fixing member 13 by a support clamp 17 , and the fixing member (13) is connected to the hanger bar (15) through the long-term barrier (14).

In particular, the prior art regarding the support clamp 17 connecting the rigid bar 12 and the fixing member 13 has been disclosed in Korean Patent Registration No. 10-1746285, and the support clamp according to the prior art uses a bolt. Therefore, it was to be fixed by applying force in the left and right directions of the rigid bar.

However, this prior art has a problem in that the position of the rigid bar is changed and the bolt is loosened as the rigid bar moves in the vertical direction due to the vertical vibration transmitted to the rigid bar through the pantograph while the train is running.

Domestic Registered Patent No. 10-1746285 (2017.06.12.) Domestic Registered Patent No. 10-1746285 (2017.06.12.) Domestic Public Utility Model No. 20-2020-0001023 (2020.05.21.) Domestic Registered Patent No. 10-1893777 (2018.09.13.)

The present invention has been made to solve the above problems, and an object of the present invention is to provide a support clamp for a rigid catenary that can obtain a strong fastening force and prevent bolt loosening.

A support clamp for a rigid catenary for achieving the object of the present invention includes: a hanger plate in close contact with the upper plate of the rigid bar; a pair of channel clamps covering the left and right edges of the upper plate and the hanger plate and facing each other; a press-in hole formed in an upper and lower portion of the channel clamp; a press-fitting nut installed in the press-fitting hole; A large lead tap hole formed in the center of the press-fit nut; a flange formed at the lower end of the press-fitting nut and caught on the lower edge of the press-fitting hole; A hollow bolt screwed to the press-fitting nut and having a large head male threaded portion corresponding to the large head tap hole formed on the outer circumferential surface; a polygonal head formed on the top of the hollow bolt; a sorded tap hole formed in the center of the hollow bolt, formed in the same direction as the spiral direction of the big lead tap hole, and formed to have a smaller distance per rotation than the big lead tap hole; A pair of tee grooves formed on the upper surface of the hanger plate; T-bolts screwed to the hollow bolts and formed on the outer circumferential surface of the sord male threaded parts corresponding to the sorded tap holes; It is formed at the bottom of the tee bolt and has a feature including a tee head caught in the tee groove.

The present invention provides a semi-circular groove formed on the lower edge of the channel clamp to coincide with the center of the t-bolt; It is characterized by including a lock nut coupled to the upper end of the tee bolt exposed upward through the polygonal head.

The present invention provides a straight groove formed in the center of the bottom surface of the tee head in a direction parallel to the tee groove; It is inserted into the straight groove, and it is characterized by including an elastic alignment bar for aligning the tee heads located in the front and rear in a straight line.

In the present invention as described above, the thread pitch of the male threaded male part 81 formed in the tee bolt 80 is smaller than the thread pitch of the male threaded part 71 formed in the hollow bolt 70. A strong strengthening action can be obtained by the difference in thread pitch, so that strong fastening is possible, and there is an effect of preventing loosening of the hollow bolt 70 .

Since the position of the tee bolt 80 can be fixed at a constant position by the tee head 82 hung on the tee groove 41, there is an effect that can prevent the position change of the channel clamp 50.

There is an effect that can prevent loosening of the hollow bolt 70 by the lock nut 83 coupled to the upper end of the t-bolt 80 protruding upward of the polygonal head 72 .

Since rotation of the tee head 82 positioned in the front and rear can be prevented by the straight groove 84 formed in the tee head 82 and the elastic alignment bar 90 fitted in the straight groove 84, the tee head 82 ) has the effect of quickly and conveniently assembling the tee groove (41).

Since the tee bolt 80 and the tee head 82 can pass through the semicircular groove 52 formed in the channel clamp 50, the tee bolt 80 can be assembled in the sound tap hole 73 formed in the hollow bolt 70. There is an effect that can prevent the tee bolt 80 and the tee head 82 from interfering with the channel clamp 50 when.

1 is a view showing a general rigid body type catenary
2 is an enlarged cross-sectional view showing a general rigid body bar and a catenary;
3 is a perspective view according to the present invention;
4 is a plan view according to the present invention;
5 is a cross-sectional view taken along line A-A' of FIG. 4;
6 is a partially enlarged cross-sectional view of FIG.
7 is an exploded perspective view showing a hanger plate and a channel clamp according to the present invention;
8 is an exploded perspective view of the bottom side of FIG. 7
9 is an exploded perspective view showing a channel clamp, a press-fit nut, a hollow bolt, a T-bolt, and its surrounding configuration according to the present invention;
10 is an exploded perspective view of the bottom side of FIG. 9

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings 3 to 10.

The present invention is a hanger plate 40 in close contact with the upper plate 32 of the rigid bar 30; A pair of channel clamps 50 that cover the left and right edges of the upper plate 32 and the hanger plate 40 and face each other; It includes a press-in hole 51 formed in a vertical through-type in the upper portion of the channel clamp (50).

The hanger plate 40 and the channel clamp 50 are extruded so that the cross-sectional shape is continuous in the longitudinal direction using an aluminum alloy or a copper alloy, for example, as shown in FIGS. 4 and 5, and then cut to a predetermined length and molded. The channel clamp 50 may be extruded into a U-shaped cross-sectional shape and then cut to a certain length and formed, or a steel plate may be bent and formed into a U-shape.

A hanger bolt 20 is installed in the center of the hanger plate 40 , and a hanger nut 21 for preventing separation of the hanger bolt 20 may be coupled to the hanger bolt 20 .

The present invention is a press-fitting nut (60) installed in the press-fitting hole (51); a large lead tap hole 61 formed in the center of the press-fitting nut 60; It is formed at the lower end of the press-fitting nut 60 and includes a flange 62 caught on the lower edge of the press-in hole 51 .

The press-fit nut 60 is press-fitted into the press-fit hole 51 as shown in FIG. 6 , the large lead tap hole 61 passes through the center of the press-fit nut 60 , and the outer diameter of the flange 62 is the press-fit nut (60) It can be formed in a disk shape having a larger diameter than the outer diameter.

The present invention is a hollow bolt 70 that is screwed to the press-fitting nut 60, the large head male thread portion 71 corresponding to the large lead tap hole 61 is formed on the outer circumferential surface; a polygonal head 72 formed on the upper end of the hollow bolt 70; The sound rod is formed in the center of the hollow bolt 70, is formed in the same direction as the spiral direction of the large lead tap hole 61, and is formed to have a smaller distance per rotation than the large lead tap hole 61 and a tapped hole (73).

Since the spiral direction of the large lead tap hole 61 and the sound tap hole 73 is formed in the same direction, when the hollow bolt 70 is rotated clockwise or counterclockwise, the hollow bolt 70 and the press-fit nut (60) rises or falls in opposite directions.

At this time, since the thread pitch of the sound tap hole 73 is formed smaller than the thread pitch of the large lead tap hole 61, the press-fit nut 60 rises or falls by a distance corresponding to the difference in the distance traveled per rotation. The strengthening action occurs, and in particular, when the press-fitting nut 60 is raised, the channel clamp 50 presses the edge of the upper plate 32 positioned between the hanger plate 40 and the channel clamp 50 with a strong force.

The polygonal head 72 formed on the upper end of the hollow bolt 70 may be formed, for example, in a hexagonal shape.

The present invention is a pair of tee grooves 41 formed on the upper surface of the hanger plate (40); T-bolt 80 which is screwed to the hollow bolt 70, and has a male threaded portion 81 corresponding to the sounded tap hole 73 formed on the outer circumferential surface; It is formed at the lower end of the tee bolt 80 and includes a tee head 82 caught in the tee groove 41 .

The tee groove 41 may be formed in parallel along the longitudinal direction of the rigid bar 30 , and the tee bolt 80 and the tee head 82 may be integrally formed using a metal.

The present invention is a semi-circular groove (52) formed on the lower edge of the channel clamp (50) to coincide with the center of the tee-bolt (80); It includes a lock nut 83 coupled to the upper end of the t-bolt 80 exposed upward through the polygonal head 72 .

The semicircular groove 52 has a tee bolt 80 and a tee head 82 when the tee bolt 80 is coupled to the sounded tap hole 73 formed in the hollow bolt 70 as shown in FIGS. 7 to 10 . It serves to prevent interference with the channel clamp (50).

The radius of curvature of the semicircular groove 52 is formed to have a larger radius of curvature than the outer diameter of the tee head 82, and the lock nut 83 is coupled to the upper end of the tee bolt 80 and presses the polygonal head 72 by pressing the hollow bolt ( 70) to prevent loosening.

The present invention provides a straight groove 84 formed in the center of the bottom surface of the tee head 82 in a direction parallel to the tee groove 41; It is inserted into the straight groove 84, and includes an elastic alignment bar 90 for aligning the tee head 82 positioned in the front and rear in a straight line.

The straight groove 84 may be configured as a dovetail groove as shown in FIG. 6 , and in this case, the cross-sectional shape of the elastic alignment bar 90 is the same as the cross-sectional shape of the straight groove 84 . make up to have a shape.

When assembling the elastic alignment bar 90 into the straight groove 84 in a state in which the straight grooves 84 formed in the tee head 82 positioned at the front and rear are aligned in a line, the rotation of the tee head 82 can be prevented. Therefore, it is possible to conveniently and quickly assemble the tee head 82 to the tee groove 41.

Reference numeral 31 in the drawing denotes a catenary installed on the rigid bar 30 .

Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings 3 to 10.

As shown in the accompanying drawings 7 and 8, the channel clamp 50 and the hanger plate 40 are pre-assembled by the press-fitting nut 60, the hollow bolt 70 and the tee bolt 80.

In this state, the edge of the upper plate 32 of the rigid bar 30 is positioned between the hanger plate 40 and the channel clamp 50, and then a spanner and When the hollow bolt 70 is turned in the descending direction while the same fastening tool is bitten, the hollow bolt 70 is lowered by the T-bolt 80, and the press-fit nut 60 and the channel clamp 50 are the hollow bolt 70 ) is raised by

At this time, since the thread pitch of the large lead male thread part 71 formed in the hollow bolt 70 is larger than the thread pitch of the sord tap hole 73, the press-fit nut 60 and the channel clamp 50 are eventually raised to a fine distance and , the upper plate 32 edge of the rigid bar 30 positioned between the hanger plate 40 and the channel clamp 50 is fixed while being strongly pressed while the strengthening action occurs due to the difference in thread pitch.

Thereafter, when the lock nut 83 is coupled to the upper end of the t-bolt 80 protruding upward through the polygonal head 72 and tightened, loosening of the hollow bolt 70 can be prevented.

20: hanger bolt 21: hanger nut
30: rigid bar 31: catenary
32: top plate 40: hanger plate
41: tee home 50: channel clamp
51: press-in hole 52: semi-circular groove
60: press-fit nut 61: large lead tap hole
62: flange 70: hollow bolt
71: surrogate male thread part 72: multi-faceted head
73: sounded tap hole 80: tee bolt
81: sounded male thread part 82: tee head
83: lock nut 84: straight groove
90: elastic alignment bar

Claims (3)

a hanger plate 40 in close contact with the upper plate 32 of the rigid bar 30;
a pair of channel clamps 50 covering the left and right edges of the upper plate 32 and the hanger plate 40 and facing each other;
a press-in hole 51 formed in an upper and lower portion of the channel clamp 50;
a press-fitting nut (60) installed in the press-fitting hole (51);
a large lead tap hole 61 formed in the center of the press-fitting nut 60;
a flange 62 formed at the lower end of the press-in nut 60 and caught on the lower edge of the press-in hole 51;
a hollow bolt 70 screwed to the press-fitting nut 60 and having a large head male screw portion 71 corresponding to the large head tap hole 61 formed on an outer circumferential surface;
a polygonal head 72 formed on the upper end of the hollow bolt 70;
It is formed in the center of the hollow bolt 70, is formed in the same direction as the spiral direction of the large lead tap hole 61, and is formed to have a smaller distance per rotation than the large lead tap hole 61 sounded tap hole (73) to be;
a pair of tee grooves 41 formed on the upper surface of the hanger plate 40;
a T-bolt 80 screwed to the hollow bolt 70 and having a male threaded portion 81 corresponding to the sounded tap hole 73 formed on an outer circumferential surface;
a tee head 82 formed at the lower end of the tee bolt 80 and caught in the tee groove 41;
A support clamp for a rigid catenary comprising a. The method of claim 1,
a semicircle groove (52) formed on the lower edge of the channel clamp (50) to coincide with the center of the t-bolt (80);
a lock nut 83 coupled to the upper end of the t-bolt 80 exposed upwardly through the polygonal head 72;
A support clamp for a rigid catenary comprising a. The method of claim 1,
a straight groove 84 formed in the center of the bottom surface of the tee head 82 in a direction parallel to the tee groove 41;
an elastic alignment bar (90) inserted into the straight groove (84) and configured to align the tee head (82) positioned at the front and rear in a straight line;
A support clamp for a rigid catenary comprising a.

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