JP4842758B2 - Rail fastening method with wire spring clip - Google Patents

Description

The present invention relates to a rail fastening method using a wire spring clip that fastens a rail of a plurality of rail standards by using one kind of wire spring clip and one kind of seating plate for hooking the wire spring clip.

Conventionally, in transport equipment used in factories, especially overhead cranes, when fixing rails for overhead cranes to traversing girders or traveling runway girders, the rails are placed on both sides of the girder on which the rails are placed. Fix the seat on which the bolt is erected, hook the flanges on both sides of the rail on the front side of the presser member, and insert the bolt attached to the base plate into the hole formed on the base side of the presser member. The presser member is pressed toward the seat by tightening the nut. As a result, the flange of the rail is pressed to the girder side via the pressing member, and the rail is fastened to the girder. However, when the overhead crane travels, vibrations are generated, which causes a problem that the nuts gradually loosen due to vibrations and the fastening force of the rails is reduced. For this reason, (1) periodically check the mounting condition of the presser member and perform additional tightening of the nut as necessary. (2) The loosening resistance of the rail is reduced by the loosening of the nut, and the rail joint portion (3) When the periodic inspection and maintenance of the rail is stopped, the factory operation will be stopped, resulting in a decrease in production at a factory with tight production. There are problems such as complicated adjustment. Thus, as a rail fastening method in which the rail fastening force does not decrease even when vibration is generated by traveling of the overhead crane, rail fastening using a wire spring clip has been proposed (for example, see Patent Document 1).

Japanese Utility Model Publication No. 5-7703

Here, for example, when various factories organically cooperate to form one factory group like an ironworks, various rail standards (for example, 37 kg determined by the JIS standard) are included in the factory group. , 40 kgN, 50 kgN, 60 kg, and CR73 kg and CR100 kg which are crane rails are used. Since the rail shape is different when the rail standard is different, when applying the invention described in Patent Document 1, a wire spring clip and a seat for latching the wire spring clip are provided for each rail of the rail standard used. It is necessary to prepare a board. For this reason, it is necessary to prepare and store maintenance parts (paired wire spring clips and seats) for each rail standard rail used in the factory group, and purchase many types of maintenance parts. There is an economic burden of doing this, and a management burden of storing many types of maintenance parts.

The present invention has been made in view of such circumstances, and is a wire that can fasten a plurality of rail-standard rails by using one type of wire spring clip and one type of seating plate that hooks the wire spring clip. It aims at providing the rail fastening method by a spring clip.

The rail fastening method using the wire spring clip according to the first invention in accordance with the above object is under one repair management, and at least two of the rails for the transportation equipment having a weight per meter of 37 kg to 100 kg according to the rail standard. A wire spring clip that is fixed to the rail support member by using a seat plate that attaches the rail to the surface of the rail support member and a wire spring clip that is hooked to the seat base in one or more facilities that are used together. The rail fastening method by
Preliminarily set a condition range of the fastening force necessary to fix the rail to the rail support member for each rail standard,
One kind of the wire spring clip and one kind of the seat for the wire spring clip that generate the fastening force within the condition range even if the deformation amount of the wire spring clip changes for each rail of the rail standard. And the rail of the rail standard used in the facility is fixed to the rail support member.
Here, the facility under one repair management refers to various factories and warehouses constituting, for example, an ironworks, an oil complex, an automobile factory, or a shipyard. In addition, rails for transport equipment with a weight per meter of 37 kg to 100 kg according to the rail standard are, for example, ordinary rails with a weight per meter of 37 kg (JIS standards 37 kg), ordinary rails with a weight per meter of 40 kg (JIS standard 37 kg) JIS standard 40 kgN) Normal rail with a weight of 50 kg per 1 m (JIS standard 50 kgN) Normal rail with a weight of 60 kg per 1 m (JIS standard 60 kg) Crane rail with a weight of 73 kg per m (CR73 kg) per m There is a crane rail (CR 100 kg) having a weight of 100 kg.

The rail fastening method using the wire spring clip according to the second invention that meets the above-mentioned object is under one repair management, and at least two rails for a transportation facility having a weight per meter of 37 kg to 100 kg according to rail standards. A wire spring clip that is fixed to the rail support member by using a seat plate that attaches the rail to the surface of the rail support member and a wire spring clip that is hooked to the seat base in one or more facilities that are used together. The rail fastening method by
Preliminarily set a condition range of the fastening force necessary to fix the rail to the rail support member for each rail standard,
The amount of deformation of the wire spring clip is set according to the flange thickness of the rail for each rail standard, and one type of the seat plate from which the amount of deformation of the set wire spring clip is obtained is set. One type of wire spring clip having a spring constant that can obtain a fastening force in the above condition range with the deformation amount of the wire spring clip is selected.
Here, the conveyance facility may be an overhead crane.

In the rail fastening method using the wire spring clip according to any one of claims 1 to 3, a plurality of rail standard rails can be fastened using one type of wire spring clip and a seating board, and a wire is provided for each rail standard rail. Economical and administrative burden of securing spring clips and seats is reduced. Since the rail is fastened to the rail support member by the elastic force of the wire spring clip, even if the rail vibrates during use, the fastening force does not decrease, and the rail can be fixed stably. As a result, the resistance to advance of the rail can be maintained, and the life of the rail joint can be extended. In addition, since the decrease in the fastening force of the rail is prevented, the time required for periodic inspections and maintenance can be set short, reducing the cost for inspections and maintenance and improving the operating rate of the facility. Is possible.

In particular, in the rail fastening method using the wire spring clip according to claim 2, the amount of deformation of the wire spring clip is set for each rail of the rail standard used together, and the set amount of deformation of the wire spring clip is obtained. Is selected, and a wire spring clip having a spring constant capable of obtaining a fastening force in a condition range from this deformation amount is selected, so that the fastening force can be gradually changed corresponding to the change in the flange thickness. It is possible to prevent the fastening force of the rail having the flange thickness from being extremely reduced or the fastening force of the rail having the maximum flange thickness from being extremely increased.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is a front sectional view of a fastening device that applies a rail fastening method using a wire spring clip according to an embodiment of the present invention to fix the rail to a rail support member, and FIG. 2 is a plan view of the same wire fastening device. FIGS. 3 and 3 are explanatory views showing the relationship between the fastening force range required to fix the rail-standard rail to the runway girder or traverse girder for the overhead crane and the deformation amount of the wire spring clip. .

As shown in FIGS. 1 and 2, an overhead crane rail 10 (hereinafter simply referred to as a rail 10), which is an example of a rail for transport equipment, is applied by applying a rail fastening method using a wire spring clip according to an embodiment of the present invention. ) Is fixed to the girder 11 (an example of a rail support member). The fastening device 12 includes a seating board 13 disposed with a gap on each side of the rail 10 placed on the girder 11, and a seating board 13. One end side is attached, and the other end side has a wire spring clip 15 that contacts the upper surface of the flange 14 of the rail 10 and presses the rail 10 downward (to the girder 11 side).

The seat 13 has, for example, a rectangular shape in plan view, a wire spring clip latching portion 17 having a semicircular upper portion and a through-hole 16 formed in the side view, and a wire spring clip latching. The pedestal portion 18 is provided so as to be connected to the portion 17 and is rectangular in a side view. Further, a welding groove (not shown) is integrally formed on the lower portions on both sides of the wire spring clip latching portion 17 and on both sides of the pedestal portion 18. And the wire spring clip latching part 17 is arrange | positioned on the rail 10 side on the girder 11, and the seat base 13 is welded and fixed on the girder 11 using this groove | channel. A chamfered portion (not shown) is formed around the opening of the through hole 16 and on both upper sides of the pedestal 18.

The wire spring clip 15 is formed, for example, using a spring steel wire in a generally “no” shape in plan view, and has a straight portion 19 on one side and an intermediate portion 22 curved to the straight portion 19. The other short straight portion 20 is provided. And the flat surface 21 is formed in the lower part of the short straight part 20 by process. Then, the straight portion 19 of the wire spring clip 15 is inserted into the through-hole 16 of the seat 13 and hooked, whereby the intermediate portion 22 provided with a portion of the straight portion 19 facing substantially parallel. Is in contact with the pedestal portion 18 of the seat 13 while being deformed against the elastic force, and the flat surface 21 of the short straight portion 20 is also deformed against the elastic force, so that the flange 14 of the rail 10 is deformed. It is in contact with the top surface. As a result, the flange 14 of the rail 10 can be pressed by the wire spring clip 15, and as a result, a downward force can be applied to the flange 14 of the rail 10, and the rail 10 can be fastened on the girder 11. .

Here, as shown in FIG. 1, when the rail 10 having the same rail standard is fastened on the girder 11 with the same wire spring clip 15, the height of the through hole 16 of the seat 13 from the bottom of the seat 13 is set. The rotation angle of the wire spring clip 15 when the straight portion 19 is inserted into the through-hole 16 and hooked (the rotation angle around the axis of the straight portion 19 is increased as the height H of the pedestal portion 18 remains unchanged. ) Becomes larger, and the short straight portion 20 of the wire spring clip 15 approaches the upper surface of the girder 11. Accordingly, the deformation amount δ (linear spring tip displacement) applied to the wire spring clip 15 to bring the flat surface 21 of the short straight portion 20 into contact with the upper surface of the flange 14 of the rail 10 is large. A large elastic force is generated, and the flange 14 of the rail 10 is pressed against the girder 11 with a large force by this reaction force. When the same wire spring clip 15 is hooked on the same seat 13 and the rail standard is changed from 37 kg to CR 100 kg, the flange thickness of the rail 10 gradually increases. The amount of deformation δ required for the flat surface 21 to come into contact with the upper surface of the flange 14 also increases, and the flange 10 is pressed toward the girder 11 with a larger force as the rail 10 has a thicker flange thickness.

Then, the rail fastening method by the wire spring clip which concerns on one embodiment of this invention is demonstrated.
In general, when the rail 10 is laid on the girder 11, the rail standard rail 10 specified according to the capacity of the overhead crane (an example of a transport facility) is used, and the overhead crane travels on the rail 10. To prevent the rail from floating (so that the rail 10 does not cause a rail turn that is inclined in a direction perpendicular to the axial direction of the rail 10), or to prevent the rail from moving in the axial direction due to advancement. In addition, it is necessary to press and fix the rail 10 to the girder 11.

Therefore, as an example, for rails with rail standards of 37 kg, 50 kg N, CR 73 kg, and CR 100 kg, the minimum fastening force required for each rail 10 under the usage conditions such as wheel load and lateral pressure of the facility under repair management The fastening force corresponding to the severer condition is compared by comparing the swivel force that is the force to move in the rail axis direction and the small return force that is the force that the rail 10 rotates in the cross-sectional direction and tries to lift. Is 265 kg for JIS standard 37 kg, 444 kg for JIS standard 50 kgN, 693 kg for crane rail standard CR73 kg, and 938 kg for crane rail standard CR100 kg. Therefore, in the said facility, the condition range of the fastening force necessary to fix the rails of the rail standards 37 kg, 50 kg N, CR 73 kg, and CR 100 kg to the girder 11 is 265 kg or more at 37 kg, 444 kg or more at 50 kg N, and 443 kg or more at CR 73 kg. It was set to 693 kg or more, and CR100 kg to 938 kg or more.

When the wire spring clip 15 is hooked on the seat base 13, the thickness D of the flange 14 at the position where the central portion of the flat surface 21 provided on the short straight portion 20 of the wire spring clip 15 contacts, and the seat base 13 The difference between the height h of the flat surface 21 (the distance between the upper surface of the girder 11 and the flat surface 21) when the wire spring clip 15 hooked on the wire is in a free state is as follows. Therefore, the relationship between the height h of the flat surface 21 and the height H of the pedestal portion 18 when the wire spring clip 15 is hooked on the seat 13 can be approximated. If it calculates | requires, when the rail 10 is fastened using the seat 13 which has the base part 18 of height H, the deformation amount of the wire spring clip 15 for every rail 10 from which a rail specification differs can be estimated. .

On the other hand, since the flange thickness of the rail 10 is determined for each rail standard, in order to be able to fasten the flange 14 of the rail 10 with the wire spring clip 15, when the wire spring clip 15 is hooked on the seat base 13. Therefore, there is a restriction on the range of the height h of the flat surface 21. As a result, when the rail standard of the rail 10 to be fastened is determined, the range of the height H of the pedestal portion 18 in which the rail 10 can be fastened by the wire spring clip 15 is also determined. Accordingly, the range of the deformation amount δ of the wire spring clip 15 when the rail 10 having a rail standard of 37 kg to CR 100 kg is fastened by one type of wire spring clip 15 is determined in advance on the seat plate 13 obtained in advance. From the relationship between the height h of the flat surface 21 and the height H of the pedestal 18 at the time of hooking, for example, 3 to 14.7 mm can be set.

When a certain type of wire spring clip 15 is deformed by 3 mm, if a fastening force of 265 kg or more, for example, 285 kg, required for fastening the rail 10 of the rail standard 37 kg in the facility is obtained, this wire spring is obtained. The relationship between the deformation amount δ and the fastening force related to the clip 15 is indicated by a straight line L in FIG. 3 because the fastening force is 0 kg when the deformation amount is 0 mm. Further, from FIG. 3, the deformation amount of the wire spring clip 15 when the rail 10 is fastened by satisfying the height of the flat surface 21 necessary for hooking (pressing) the wire spring clip 15 to each rail 10. δ and the fastening force are 7 mm or more at the rail standard 50 kgN and 665 kg or more, 10 mm or more at the rail rail CR73 kg and 950 kg or more at the crane rail standard CR100 kg, and 1145 kg or more at 12 mm or more, satisfying the minimum fastening force of each rail 10. FIG. 3 also shows the minimum fastening force necessary for fixing each rail 10.

On the other hand, when the rail 10 having the maximum flange thickness is fastened using the selected wire spring clip 15, if the deformation amount δ of the wire spring clip 15 exceeds the maximum use deformation amount corresponding to the maximum use load, a stable fastening force is obtained. It becomes impossible to hold. For this reason, it is necessary to confirm that the deformation amount δ when the rail 10 having the maximum flange thickness is fastened using the selected seat 13 is equal to or less than the maximum usable deformation amount. For example, when the use maximum load of the wire spring clip 15 is 1400 kg, the use maximum deformation amount is 14.7 mm. Further, the relationship between the minimum fastening force required for fixing each rail 10 and the deformation amount of the wire spring clip 15 is indicated by a broken line C in FIG. 3, and the minimum deformation amount of the wire spring clip 15 is 3 mm. Therefore, the condition range of the fastening force necessary to fix the rail 10 of each rail standard from 37 kg to CR 100 kg to the girder 11 is a hatched area in FIG.

From the above, for example, the seat 13 has a deformation amount δ of 3 mm or more at the rail standard 37 kg, 7 mm or more at the rail standard 50 kgN, 10 mm or more at the crane rail standard CR73 kg, 12 mm or more and 14.7 mm or less at the crane rail standard CR100 kg. And a wire spring clip 15 having a spring constant that generates a fastening force of 285 kg when the deformation amount δ is 3 mm is selected, and the rail 10 of each rail standard is fastened by the wire spring clip 15 in FIG. The point indicating the fastening state determined by the deformation amount δ and the fastening force at this time falls within the shaded area in FIG. 3, and it can be seen that the rail 10 can be fastened securely.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
For example, although the case where the overhead crane rail is fixed to the girder has been described, the present invention can also be applied to the case where a rail (for example, for a ground traveling crane or a vehicle) is fixed to a rail support member (for example, a sleeper) on a ground track.
In addition, in the above example, a seat with a deformation amount δ of 3 mm or more at a rail standard of 37 kg, 7 mm or more at a rail standard of 50 kgN, 10 mm or more at a crane rail standard of CR73 kg, 12 mm or more and 14.7 mm or less at a crane rail standard of CR100 kg is selected. Then, a wire spring clip having a spring constant that generates a fastening force of 285 kg when the deformation amount δ is 3 mm is selected, but has a spring constant that generates a fastening force of 265 kg or more when the deformation amount δ is 3 mm. Any wire spring clip can be selected.
Furthermore, when the range of the target rail is narrow, for example, in the case of 40 kgN to CR73 kg, one type each of the seat base and the wire spring clip can be selected based on the same idea.

It is a front sectional view of a fastening device which fixes a rail to a rail support member by applying a rail fastening method by a wire spring clip concerning one embodiment of the present invention. It is a top view of the fastening device. It is explanatory drawing which shows the relationship between the fastening force range and deformation amount required in order to fix the rail of each rail specification to a girder.

Explanation of symbols

10: overhead crane rail, 11: girder, 12: fastening device, 13: seat base, 14: flange, 15: wire spring clip, 16: through hole, 17: wire spring clip latching portion, 18: pedestal portion, 19 : Straight part, 20: short straight part, 21: flat surface, 22: intermediate part

Claims (3)

In one or more facilities that are under one repair management and are used in combination with at least two rails for transport equipment with a rail standard weight of 37 kg to 100 kg, the rails are used as rail support members. A rail fastening method using a wire spring clip that is fixed to the rail support member using a seat spring attached to the surface and a wire spring clip hooked to the seat,
Preliminarily set a condition range of the fastening force necessary to fix the rail to the rail support member for each rail standard,
One kind of the wire spring clip and one kind of the seat for the wire spring clip that generate the fastening force within the condition range even if the deformation amount of the wire spring clip changes for each rail of the rail standard. A rail fastening method using a wire spring clip, wherein the rail of the rail standard used together in the facility is selected and fixed to the rail support member. In one or more facilities that are under one repair management and are used in combination with at least two rails for transport equipment with a rail standard weight of 37 kg to 100 kg, the rails are used as rail support members. A rail fastening method using a wire spring clip that is fixed to the rail support member using a seat spring attached to the surface and a wire spring clip hooked to the seat,
Preliminarily set a condition range of the fastening force necessary to fix the rail to the rail support member for each rail standard,
The amount of deformation of the wire spring clip is set according to the flange thickness of the rail for each rail standard, and one type of the seat plate from which the amount of deformation of the set wire spring clip is obtained is set. A rail fastening method using a wire spring clip, wherein one kind of wire spring clip having a spring constant capable of obtaining a fastening force in the above condition range is selected by a deformation amount of the wire spring clip. The rail fastening method using a wire spring clip according to any one of claims 1 and 2, wherein the transport facility is an overhead crane.

Images