JP2570693Y2 - Rail of coke oven charcoal truck - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail of a coke oven charging car which is laid on a coke oven furnace in a direction toward a furnace group and in which a coal loading car receiving coal charged to a hopper from a coal tower runs.

[0002]

2. Description of the Related Art The rails of a coke oven loaded car are laid on bricks on a coke oven, so they are easily affected by heat from the furnace body, have a large linear expansion, and have the lowest temperature in winter. Since the temperature difference between the time of the hot weather and the highest temperature in summer is 60 ° C. or more, the difference in the expansion of the rail is extremely large. For this reason, the conventional rail of a coal-equipped car employs a method of providing a gap by cutting the rails at predetermined intervals to absorb the expansion of the rails. The rail gap is dimensioned based on contact with an adjacent rail at the time of the largest expansion in summer.

[0003] The coke oven on which this coal-loaded car rail is laid is made of refractory bricks and is a high-temperature oven, so that the surface temperature of the brick on the furnace upper surface is significantly higher than the atmospheric temperature. For this reason, the rails maintain the expanded state, but are significantly cooled and contracted during rainfall or the like. On the other hand, although the furnace top brick of a coke oven is smaller than a rail, it is not only expanded and contracted with a temperature change but also fragile, so that a rail cannot be laid directly on the furnace top brick.

For this reason, as shown in FIGS. 5 and 6, a long rail 22 is mounted on a metal fitting 21 provided on the top of the furnace in the combustion chamber, and the furnace length is placed on the rack 22. Rail 23 that prevents displacement in the direction
Is laid. The receiving hardware 21 is generally fixed to a furnace upper cross anchor 24 with bolts 25 and mounted on an embedded hardware 27 embedded in a furnace brick 26. The rail 23 and the pedestal 22 is fixed by a rivet 28, a gap X ₁ between the rails 23 and 23 for each predetermined distance, respectively in consideration of thermal expansion, the gap X ₂ is provided between the gantry 22 and 22 ing. Gap X ₂ between the gap X ₁ and frame 22, 22 between the rail 23 and 23, for normal instrumentation Tansha weight due to the impact force relaxation during the load and the gap running to the furnace body, a clearance X ₁ of the rail 23 gap X ₂ of the mount 22 is provided apart a distance.

[0005] For this reason, since the rails and the pedestal 22 are provided with gaps X ₁ and X ₂ at regular intervals and the edges thereof are cut off, the rails of the coal-filled car have wheels at the gap X _{1 of the} rails 23 when passing through the coal-loaded car. An impact is generated by the fall, and damage of the furnace body brick is caused through the gantry 22, the rail receiving hardware 21, and the embedded hardware 27. Further, since the rail 23 and the gantry 22 are cut off at the gaps X ₁ and X ₂ , a concentrated load is applied to the rail receiving metal 21 below the cut-off portion. As a result, the furnace body brick is hit by repeated impact force and excessive load, and the furnace body embedded metal 2
7 The lower brick 29 is damaged. Damage to the brick 29 below the furnace body embedded metal part 27 is caused by the brick 2 below the furnace body embedded metal part 27.
In addition, the sinking into the interior of the furnace 9 is caused, and a passing impact force at the time of traveling is added to accelerate the damage of the brick 29 below the metal fittings 27 embedded in the furnace body.

[0006] The damage progress of the furnace bricks in such a pattern is considered from the viewpoint of furnace body protection and equipment protection due to vibration during running of the coal-carrying car, from the viewpoint of rails and bricks near the edge gaps of the rails and the gantry at fixed distances. Need to be repaired. If there are several gaps at fixed distances between the rail and the gantry, the bricks and rails are repaired several times a year, and the labor and cost for such repairs occupy a large part of the maintenance cost. Particularly, in recent coal-equipped vehicles, many precision parts are used, and the impact during traveling also contributes to trouble of the precision parts. Therefore, traveling with less vibration is a condition for unmanned coal-equipped vehicles in the future. As described above, it is known that the gap for absorbing the difference in expansion between the rails and the gantry of the coal-carrying truck has an adverse effect on the furnace brick, the rail and the equipment of the coal-carrying truck. Not improved due to concerns about loss and lifting.

[0007] As a coal-equipped car rail for absorbing the difference in expansion, a large number of clips arranged on both sides of the rail and fixed to the gantry prevent the rail from coming off in the lateral direction, and are mounted on the gantry so as to be stretchable in the longitudinal direction. In the coke oven rail for coke oven,
One end of the gantry is fixed to a strong structure such as a coal tower, one end of the rail is fixed to the fixed side of the gantry, and a push is provided between the other end of the rail and the end of the bottomed outer cylinder connected to the gantry. Rails for coal-equipped vehicles (JP-B-63-19553) have been proposed which are connected to a movement restoring device provided with a pressure-adjustable coil spring.

[0008]

[Problem to be solved by the present invention]
No. 553 discloses a rail and a base of a coal-equipped truck, which are free to expand toward a furnace end with a coal tower as a fixed point. When the rail expands, the rail and the base are extended toward the furnace end, and when the rail contracts, the base of the base is expanded. With the elasticity of the spring of the moving and restoring device installed at the furnace end, the rails are pushed toward the fixed side, thereby eliminating the gap between the rails and alleviating the impact force during running of the coal-equipped vehicle. However, since the rails of the coal-equipped truck disclosed in Japanese Patent Publication No. 63-19553 are abutted only between the rails and are cut off, a concentrated load is applied to the lower rail receiving member, causing furnace body damage, Similarly, the gantry is damaged by the concentrated bending load. Also, dust easily accumulates between the clip and the rail, and considering the frictional resistance between the rail and the base,
When the rail is contracted, the contact portion cannot be pushed back with a spring without a gap, and a gap occurs in the rail contact portion. Further, since the lower frame expands in the same manner as the rail, the spring pressing effect cannot be obtained during contraction. Furthermore, the upper gap between the clip and the rail has a problem that the rail moves up and down when the coal-equipped vehicle travels and generates an impact, and is not realistic.

[0009] The purpose of this invention is to prevent impact and partial overload caused by rail joints when running a coal-powered vehicle,
It is an object of the present invention to provide a coke oven-charged car rail that can significantly reduce damage to a furnace body brick.

[0010]

Means for Solving the Problems The inventors of the present invention have conducted various tests and studies to achieve the above object. As a result, the rail and the gantry are each made into one seamless rail and gantry by welding, and the rail is fixed to the gantry to form a synthetic rigid body and the coal tower side is fixed. It was confirmed that the impact and partial overload caused by the joint of the rails could be prevented by making the rails and bearings free except for the frictional resistance of the metal fittings.

That is, in the present invention, a metal fitting is placed on a metal fitting embedded in a coke oven, a gantry is laid on the metal fitting, and a rail is placed thereon. The base to be laid and the seam of the rail to be mounted on the base are welded to form a single base and rail without seams, respectively, the rail is fixed on the base, and the base and rail are made of synthetic rigid rails. Is fixed on the furnace inside the coal tower, and the expansion of the rigid rail is
A rail of a coke oven coal-equipped car characterized in that the rail is free in the end direction except for frictional resistance between the rail and a receiving metal .

[0012]

In the present invention, the base laid on the receiving hardware and the joints of the rails placed on the base are welded to form a single base and rail without any seams. It is possible to eliminate the impact and partial overload during running on charcoal wheels. In addition, the rail is fixed on the gantry by rail fastening hardware, the gantry and the rail are formed as a synthetic rigid rail , the coal tower side end of the gantry is fixed to the coal tower, and the expansion of the rigid rail is changed to the rail end direction. And receiving
The rigid rail consisting of the rail and the gantry is fixed to the coal tower at the end of the coal tower, and the expansion of the rail reduces the friction resistance between the rail and the receiving metal toward the furnace end. It is free except. In this case, assuming that the rail expansion dimension λ is the rail length L _{0 , the} rail linear expansion coefficient α, and the temperature difference t, an expansion difference of λ = L ₀ αt occurs.

[0013] The rail of a coal-loaded car is assumed to expand greatly due to the heat of the furnace body. However, once the rail is laid, once it is placed on the furnace, expansion due to the heat of the furnace body occurs. The difference between the maximum temperature and the minimum temperature during rainfall is the difference in expansion of the rail, which may be considered to be the maximum difference in temperature of about 60 ° C. per year. What should be taken into account in the case of seamless rails in terms of bending loss and uplift is the rapid thermal expansion that occurs in a short time with the coal car stopped at the end of the furnace. It is before and after summer when the temperature difference is large and heavy rain. Weight of coal-equipped vehicle W (k
g), friction coefficient hardware receiving the rail upsilon: (When 0.25), the axial force of the railway to move in a state where instrumentation Tansha is stopped Rodin end F (kg) is, F = υW It is. Also,
The thermal energy of the rail is not completely consumed by expansion and contraction due to the frictional force due to the weight of the coal-carrying vehicle, and the axial force P (kg), which is the thermal stress of the rail generated by pressing, is the cross-sectional area A (cm) of the rail.
² ), longitudinal elastic modulus E of rail: (2.1 × 106 kg /
cm ² ), linear expansion coefficient α of the rail (0.000011)
4) If the temperature change is t (° C.), P = AEαt. When F (υW) <P (AEαt), if the coal-loaded truck is stopped at the end of the furnace, the thermal stress of the rail exceeds the frictional force of the coal-loaded truck, causing the rail to expand.

[0014] For example, if the instrumentation Tansha of Weight 200t is stopped the furnace group ends, the frictional resistance of the rail and receiving metal material, to
That is, the rail expansion resistance F is 50 t at F = ５０W.
And the temperature exceeds a certain temperature difference from the stopping friction resistance F
When the rail expansion force P exceeds the
Expands and moves toward the end of the furnace. Rail at temperature difference around 20 ℃
The expansion axial force is about 50 t, which is the same as the frictional resistance force, and the maximum compressive stress is generated as an axial force on the rail itself.
If the rail has cross-sectional performance of buckling strength that suppresses bending loss and lifting against compressive stress, there will be no problem of rail bending and lifting, and the rail and gantry are combined rigidly. in the body trajectories conditions, the buckling strength of the more pressing songs loss against stress, a lift
Degree of rail section performance may be used. Further, at the fixing point of the coal tower, a fixing method for supporting the maximum axial force of the rail expansion may be implemented. In the shrinkage of the rail due to the temperature drop , tensile stress occurs because the coal tower side is fixed.
Therefore, there is no problem of bending and lifting of the rail.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to FIGS. 1 is a side view of the entire rail laid on the coke oven, FIG. 2 is a side view of the brick rail on the coke oven, FIG. 3 is a cross-sectional view of the brick rail on the coke oven, and FIG. 4 is a coal tower. FIG. 3 is a cross-sectional view of a rail at a rail fixing point. In FIGS. 1 to 4, a rail composed of a rail 1 and a gantry 2 is linearly laid on a furnace of a coke oven 4 with a coal tower 3 as a base in a furnace group direction. Since the rail is not directly installed in the furnace body, the ceiling of the carbonization room does not have strength.
It is laid on the receiving hardware 5 arranged on the combustion chamber. Further, the receiving hardware 5 is fixed to the furnace upper cross anchor 6 with bolts 7, and is mounted on the embedded metal 9 embedded in the furnace brick 8.

The base 2 on which the rail 1 of the rail is to be mounted is entirely welded 10 at the portion in contact with the adjacent base 2 to form a single base 2, and furthermore, the reinforcing plate is welded and attached to both sides for reinforcement. The strength has been strengthened. Also, rail 1
The part which is in contact with the adjacent rail 1 is completely connected by enclosure welding 12 and forms one rail 1, and is fixed to the gantry 2 by rail fastening hardware 13 to form a synthetic rigid body. It is laid on the entire length in the upper furnace group. In this rail, the rail fixing point of the furnace upper part 14 of the coal tower 3 is fixed by anchor bolts 15, and expands in the direction of the furnace group with the rail fixing point fixed by the anchor bolt 15 of the furnace upper part 14 of the coal tower 3 as the base point. , Configured to contract. Since the rail expands and contracts at the furnace end in the furnace group direction, a coal loading car stopper 17 is provided on the furnace upper deck 16 side with a rail expansion allowance dimension. In addition, the rail fastening metal 13 considers the repair due to the wear of the rail 1, and the gantry 2 and the rail 1 can be fixed by welding to be a synthetic rigid body.

With the above-described configuration, the rail 1 and the gantry 2 become one rail 1 and one gantry 2
As a result, the gap between the rail 1 and the gantry 2 and the edge cut portion are eliminated, so that the generation of an impact force due to the wheel falling due to the gap when passing through the coal truck 18 is prevented, and the excess load of the lower receiving metal member 5 caused by the edge portion. Can be prevented, and damage to the rail and the furnace brick can be significantly reduced. Further, when the coal-equipped truck 18 is stopped at the furnace end and stopped, as described above, the expansion of the rail is suppressed by the frictional force between the rail and the receiving metal member 5, and internal stress is generated in the rail. Since the rail 1 and the gantry 2 have a combined cross-sectional performance sufficient to prevent the rail from bending and lifting, there is no problem of rail bending and lifting. The temperature of the furnace bricks 8 rises, and the rails and receiving hardware 5 by the coal-equipped truck 18 stopped at the furnace end.
When the thermal expansion force of the rail exceeds the furnace end frictional force, the rail expands toward the furnace group direction furnace end with the coking truck 18 mounted thereon.

[0018]

[Effect of the invention] As described above, according to the invention,
It can prevent the generation of impact force on the furnace body and the overloading of the lower metal fittings, greatly reduce the damage to rails and furnace body bricks, and also protect the equipment installed on coal-powered vehicles, and protect and repair the running wheels and bearings. Costs can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a side view of an entire rail laid on a coke oven furnace.

FIG. 2 is a side view of a rail in a brick section of a coke oven.

FIG. 3 is a cross-sectional view of a rail in a coke oven brick section.

FIG. 4 is a sectional view of a rail at a rail fixing point of a coal tower.

FIG. 5 is a side view of a conventional rail of a brick part in a coke oven.

FIG. 6 is a cross-sectional view of a conventional brick rail of a coke oven.

[Explanation of symbols]

1,23 rail 2,22 gantry 3 coal tower 4 coke oven 5,21 metal fittings 6,24 furnace cross anchor 7,25 bolt 8,26 furnace brick 9,27 buried metal 10 full welding 11 face plate 12 enclose welding 13 rail fastening hardware 14 furnace top 15 of anchor bolts 16 furnaces on the deck 17 Sotansha stopper 18 Sotansha 28 rivet 29 bricks X _1, X ₂ gap

Claims (1)

(57) [Scope of request for utility model registration] 1. A base laid on a receiving metal fitting in a coke oven loaded car rail in which a receiving metal is placed on a metal fitting embedded in a coke oven furnace, a base is laid on the receiving metal, and a rail is mounted. And the seams of the rails to be mounted on the gantry are welded to form a seamless gantry and rail, respectively, the rails are fixed on the gantry, and the gantry and rails are made of synthetic rigid rails. The side end is fixed to the coal tower, and the expansion of the rigid rail is
A rail for a coke oven coal-equipped car characterized by being free except for frictional resistance .