JPH0313376Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of overhead wire protection covers for electric railways.

Generally, when the overhead contact line 1 is suspended over a overhead contact line or an auxiliary overhead contact line 2 (hereinafter referred to as "overhead line"), the overhead contact line 1 is suspended via a hanger bar 3 as shown in Figure 1. ing.

That is, the overhead contact wire 1 is fixed to the lower end of the hanger bar 3, and the upper end of the hanger bar 3 is connected to the overhead wire 2.
It is attached to the overhead wire protection cover 4 attached to the overhead wire protection cover 4. And this overhead line protection cover 4
consists of a hollow body with flanges 42 and 43 formed at both ends of a main body 41 made of an insulating material, the overhead wire 2 is passed through the hollow part 44, and the upper end of the hanger bar 3 is wrapped around the outer periphery of the main body 41. Configured to be fixed. And chiyo catenary protection cover 4
is divided into two parts in the axial direction for convenience in passing the overhead wire 2 through the hollow part 44. After positioning the overhead wire 2 in the semicircular hollow part of one member, After fitting the other member into the one member so as to cover the overhead wire 2 with the semicircular hollow part of the other member having the same configuration as the semicircular hollow part, both members are fitted. There is a known structure in which the fitted state is maintained by inserting split pins into pin insertion holes provided at both ends from the front toward the back in FIG. 1, that is, in the diametrical direction. There is. (For example, Japanese Utility Model Application Publication No. 55-79610) However, in reality, incorrect insertion accidents often occur in which the cotter pin is inserted before the two parts of the overhead line protective cover 4, which is divided into two parts, are not completely fitted together. There is. If the cotter pin is incorrectly inserted, both members may loosely separate or fall off, causing contact between the overhead wire 2 and the hanger bar 3, which may lead to breakage of the hanger bar 3 due to circulating current or a breakage accident of the overhead wire 2. There is.

The present invention is an attempt to easily solve the above-mentioned problems that exist in conventional overhead wire protection covers.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The overhead wire protection cover according to the present invention will be explained according to the embodiments shown in FIGS.

2a to 3b show the protective cover member constituting the present invention, in which reference numeral 6 denotes a collar;
7 is a main body portion with an open upper surface and a semicircular cross section; 8
is the inset part. The collar portion 6 is formed into a circular shape having a hollow portion 91, and the upper circumference thereof is vertically notched to form a fitting portion 9. The notch width of the fitted portion 9 is set to w, and the outer periphery of one end in the axial direction of the main body portion 7 is fixed to the lower inner periphery in contact with the hollow portion 91. A pin insertion hole forming member 11 having a predetermined thickness is integrally formed along the outer circumferential surface of the collar portion 6 in contact with the inserted portion 9 and the hollow portion 91, and is located at a predetermined position on both sides of the upper portion. There is a split pin insertion hole 1 that penetrates from the front side to the rear side in FIG. 2a, that is, in the diametrical direction of the main body 7
0 and 10 are formed through it. Stepped parts 71, 72 and 73, 74 having predetermined steps are formed on the upper surface of both ends of the semicircular circumferential side of the main body part 7, and a convex stopper 76 is formed on the outer periphery of the main body part 7 near the insertion part 8. It is formed. A fitting portion 8 made of a rectangular cube is integrally formed on the lower outer peripheral portion of the other end of the main body portion 7 in the axial direction. The insertion part 8 is
It faces the surface of the collar portion 6 located below the fitted portion 9 . The lateral width of the fitting part 8 shown in FIG. 3B when viewed from the side is set to be equal to or slightly smaller than the width w of the fitting part 9. Reference numeral 12 denotes a split pin insertion hole formed at a predetermined position of the fitting portion 8 so as to penetrate from the front side to the rear side in FIG. 2a, that is, in the diametrical direction of the main body portion 7.

A pair of protective cover members having such a configuration is prepared.

Fig. 4a shows another protective cover member corresponding to Fig. 2a, and Fig. 4b shows another protective cover member corresponding to Fig. 2b. The latter protective cover member is shown displaced by 180 degrees in the left and right directions. That is, each protective cover member has the same shape and dimensions, but is located in completely symmetrical positions.

In FIGS. 4a and 4b, the same symbols as those in FIGS. 2a and 2b with a ' added thereto indicate the same components.

In this state, the protective cover member A shown in FIG.
A protective cover member B (hereinafter referred to as "B member") shown in FIG.
As a result, first, the stepped parts 71' to 74' of the main body part 7' of the B member sequentially form circular hollow parts using the corresponding stepped parts 71 to 74 of the main body part 7 of the A member as guides. The fitting part 8' of the B member is fitted into the fitting part 9 of the A member, the fitting part 8 of the A member is fitted into the fitting part 9' of the B member, and the main body part 7,
The advancement is stopped when the flanges 6, 6' abut against a convex stopper 76 formed on a predetermined outer periphery near the fitted portions 8, 8' of the flange 7'.

In this state, as shown in FIG. 5, the fitting portions 8,
8' in FIG. 2a is set, and the cotter pin insertion hole 1 of the collar 6 of member A is set.
0, 10 and the split pin insertion hole 1 of the insertion part 8' of the B member
2', and the split pin insertion hole 1 of the collar part 6' of the B member.
0', 10' and split pin insertion hole 1 of fitting part 8 of A member
2 is set so that it passes through. Therefore,
In this state, by inserting split pins into the split pin insertion holes, the hollow body having flanges formed at both ends of the main body is tightly fixed.

As mentioned above, the lengths of the fitting parts 8, 8' are as follows:
When both members A and B are completely fitted together, in addition to sufficiently protruding from the outer surfaces of the brim portions b and b' of the other members B and A, the fitting portion of one member A and B The outer end surface of 8 is the collar part 6' of the other member B, A,
When the two members are located inside the split pin insertion holes 10' and 10 of No. 6, the fitting and locking of both members is extremely unstable, or it is set so that it is difficult to fit and lock the two members.

According to the present invention, when the outer end surface of the fitting part of one member in a protective cover member divided into two parts in the axial direction is located inside the pin insertion hole of the flange part of the other member (in this state, the outer end surface of the fitting part of one member is (The pin can only be inserted into the pin insertion hole in the flange of the member.) Since the fitting part is far away from the inside of the main body, the fitting and locking of both members is extremely unstable, or the fitting and locking of both members is extremely unstable. Therefore, there is no possibility of incorrect pin insertion in this state. Furthermore, even if the fitting of both members is further advanced, unless both members are completely fitted, the pin will abut against the part of the fitting portion that does not form the pin insertion hole, and insertion of the pin will be blocked. Ru. When both members are completely fitted, the pin insertion hole of the fitting part and the pin insertion hole of the collar part penetrate for the first time.

Therefore, unlike conventional products, there is no possibility of incorrectly inserting the pin due to insufficient fitting, and the above-mentioned breakage of the hanger bar or disconnection of the overhead wire due to the protective cover falling off will not occur. Since there are no holes, it is possible to improve the stability and security of the equipment, and when removing both parts, after pulling out the pin, pull both protrusions of both insertion parts of the protective cover inward. Since it can be removed extremely easily by pushing the protective cover, it is easy to install and remove the protective cover, improving work efficiency. Since it can be easily visually confirmed whether or not the fitted portion is protruding, there is also the advantage that maintainability can be improved.

[Brief explanation of the drawing]

Figure 1 is a front view for explaining the overhead line protection cover, Figure 2 and the following are examples of the overhead line protection cover according to the present invention, and Figure 2a is a front view showing the protective cover member. Fig. 2b is a plan view of Fig. 2a, Fig. 3a is a left side view of Fig. 2a, Fig. 3b is a right side view of Fig. 2a, and Fig. 4a is a plan view of Fig. 2a. A front view of the member shown in Figure a displaced 180 degrees vertically and horizontally, Figure 4 b is a plan view of Figure 2 b displaced 180 degrees left and right, and Figure 5 shows how the protective cover is fitted. FIG. 3 is a front view showing the assembled state. 6, 6'...Brim part, 7, 7'...Body part, 8,
8'...Inset part, 9,9'...Inset part, 10,1
0', 12, 12'... split pin insertion hole (pin insertion hole), 11... pin insertion hole forming member, A, B...
Protective cover member.

Claims (1)

[Scope of utility model registration request] a main body portion having a semicircular cross section; a fitting portion made of a rectangular cube fixed to the outer circumference of one end of the main body portion;
It is composed of a hollow circular collar fixed to the other end of the main body, and the peripheral part of the other end of the main body is fixed to the inner circumferential part in contact with the hollow part of the collar. , the upper peripheral part of the part facing the fitting part is notched from the hollow part to the periphery to form the fitting part, the width of the fitting part is set to a size that allows the fitting part to fit, 1. A protective cover member is provided in which a pin insertion hole is formed in a predetermined position of the pin insertion hole forming member provided on both sides of the part and the inserted part in a direction perpendicular to the axial direction of the main body part.
A protective cover having hollow circular flanges at both ends of a hollow main body is formed by fitting the fitting part of one protective cover member into the fitting part of the other protective cover member. , above 1
When the pair of protective cover members are closely fitted, the outer end surface of the fitting portion of one protective cover member protrudes from the outer side of the flange of the other protective cover member by a predetermined amount,
In addition, when both the pin insertion holes of the insertion part and the insertion part pass through, and the outer end surface of the insertion part of one protective cover member is inside the pin insertion hole of the insertion part of the other protection cover member, This overhead wire protection cover is configured such that both protection cover members are not fitted into each other.