JP3190155B2 - Conveyor truck with steering mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage having a steering mechanism for stably running a high-temperature long heavy object, for example, a high-temperature slab obtained by continuous casting, on a curved section while reducing the amount of wheel wear. It is about.

[0002]

2. Description of the Related Art In the production of steel products, the method of transferring from a conventional ingot forming and sizing process to a rolling process and then processing to a rolling process through a continuous casting process is shifted to improve the yield by shortening the process. And lower costs have been achieved. In shortening this process, it is important to make the continuous casting process and the subsequent rolling process continuous, particularly from the viewpoint of energy saving. However, in an existing steel mill, since a continuous casting plant and a rolling plant are separately provided, a high-temperature slab obtained by continuous casting is usually transported by a dedicated cart.

[0003] In the system conventionally used for the above-mentioned dedicated carrier, the axle a is rigidly connected to an axle box b fixed to the bogie e as shown in FIG. It is fixed to the carriage body f. Therefore, especially in the case of transport within a limited site such as a steelworks, the radius of curvature of the rail c must be reduced, and as a result, the attack angle θ becomes large, and the flange of the wheel d is moved with respect to the rail c. Since the contact is made by the lateral pressure Q, there is a drawback that wear is remarkable and labor required for maintenance is large. In addition, since slab conveyance in steel works is usually heavy and requires frequent conveyance, in extreme cases, the flanges of the wheels d may fall off and derail.

[0004] Further, when the slab is automatically transferred,
Since the stop position is controlled by the number of rotations of the wheel d, if the wear of the wheel d is large, the fluctuation amount of the stop position is large and a warning of poor stop accuracy is issued at the time of loading and unloading slabs, and the operation is hindered. was there. In addition, since the curve running speed is limited by the ratio of the lateral pressure of the wheel d to the wheel load, the conventional bogie system naturally has an upper limit of the speed, so that there is a drawback that an improvement in the transport efficiency cannot be expected.

[0005]

As described above,
The above prior art generally has the following common problems. In other words, the amount of wheel wear is large,
High cost. If the wear is remarkable, there is a risk of derailment due to the flange falling off.

A stop position defect occurs due to wheel wear. For the above-mentioned reasons, operation hindrance occurs. Curve running speed is limited and transport efficiency is poor. And so on. The present invention proposes a transport trolley having a steering mechanism suitable for transporting a high-temperature slab or the like capable of highly efficient slab transport while reducing the amount of wheel wear and improving the curved traveling speed.

[0007]

In order to achieve the above object, the present invention has a structure in which the front and rear bogies are rotatable with respect to the main body of the bogie, and the front and rear bogies are respectively oriented in the traveling direction. Separate left and right, then left and right
Rotate only a predetermined range to lock the side beam frame with the rocking pillow frame
While it allows the structure were provided with wheels traveling on the rails through the elastic member respectively disposed before and after the front side sill frame lower surface positioned relative to the left and right sides of each bogie after Axle box supporting the axle is attached, and a steering torsion bar is provided across the lower part of the left and right side beam frames,
Steering links are connected to the front and rear steering levers provided at both ends of the steering torsion bar so that moment forces are transmitted to the upper and lower sides of the steering lever in opposite directions on the left and right sides, respectively. A carriage having a steering mechanism, wherein the carriage is connected to the front and rear axle boxes via a link, and the right or left steering lever is connected to the carriage body via a connection link.

Further, in the above invention, by providing the oil supply sliding gate with mounting a lubricating oil tank to the base vehicle body, connects the oil supply pipe on which is connected to the lubricating oil tank to the fixed plate on a slide gate The lower oil supply pipe connected to the lower fixed plate of the slide gate faces the tread surface of each corresponding wheel, and the push rod fixed to the axle box supporting the axle can be opened and closed with the slide plate of the slide gate. May be connected.

[0009]

The flange 8a of the wheel 8 located outside the radius of curvature of the bogie 20 which turns according to the curvature of the rail 9 on the running path as shown in FIG.
As a result, a force for expanding the distance between the front and rear shaft boxes 16 is applied, and the front and rear shaft boxes provided inside the radius of curvature via the lever link mechanism A {see FIGS. 3 (c) and 3 (d)}. Is applied, the directions of the axles 17 and 18 are changed, the bogie 20 rotates, and the bogie body 7 also rotates. As a result, as shown in FIG.
, The attack angle θ becomes close to zero, the lateral pressure Q is reduced, and the wear of the wheels 8 and the rails 9 is reduced.

[0010] from carriage body 7 having a lever link mechanism A as shown in FIG. 3 (c) and the distance L ₁ to the center of the axle 17, 18 of the front and rear wheels 8, between the lever connected to the upper and lower links 25 Assuming that the distance is L ₂ , the axles 17 and 18 rotate according to the radius of curvature of the rail 9 if the longitudinal spring constant of the axle box 16 is made as low as possible and the lever ratio L ₁ / L ₂ is appropriately selected. I do.

Axle for making attack angle θ zero
Assuming that the axle distance is L and the rail curvature radius is R, the rotation angles θ of 17, 18 are θ = sin ⁻¹ (L / R), and the distance between the left and right axle boxes is W, and FIG. ) Is expressed by ΔX = W / 2 · tan {sin ⁻¹ (L / R)}. According to the present invention, the axles 17 and 18 are rotated according to the rail curvature of the traveling road by the above-described operation, and the attack angle θ is reduced. For this reason, the lateral pressure Q of the wheel 8 decreases, the ratio Q / P of the lateral pressure Q and the axle load P decreases, and the risk of derailment due to the lack of the flange 8a of the wheel 8 in the curved section of the rail 9 decreases. And the accuracy of the bogie stop position can be improved. By pulling, the operation becomes stable and the maintenance load on the bogie is reduced.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below at high temperatures (1100 ° C.).
) Will be described. As shown in FIG. 4 and FIG.
A bogie 20 traveling above is rotatably connected via a vertical rotation shaft 1. On the carriage body 7, a heat insulation room 29 for housing a long slab 40 of high temperature is installed. This warm room
29 is lined with fire-resistant heat insulating material and has an opening formed on one side surface in the longitudinal direction.

The heat insulation chamber 29 is covered with a roof 34 formed in an arc shape, and an arc door 35 for opening and closing an opening formed on one side of the heat insulation chamber 29 is provided. When the door 35 is opened and closed, it can move along the inside of the roof 34. Further, an operator's cab 36 is provided in front of and behind the heat insulation room 29 installed on the bogie main body 7, and a door driving device 37 for opening and closing a door 35 is provided on a roof 34 near the upper side of the operator's cab 29. Is installed.

On the floor of the heat insulation room 29, skid rails 38 arranged at appropriate intervals in the longitudinal direction of the bogie body 7 are installed.
A high-temperature long slab 40 carried through an extractor 39 is mounted on a skid rail 38. In FIG. 1, reference numeral 20 denotes a bogie,
Are rotatably connected by the vertical rotating shafts 1 installed at the front and rear portions of the bogie main body 7 as described above. In such a bogie 20, the upper center beam 6 of the side beam frame 5 and the lower center beam 11 of the side beam frame 10 having a structure separated to the left and right are overlapped, and the center beam support shaft is provided in the openings 12 a and 12 b provided respectively. Set 12 and
With the nut 12c attached, the side beam frame 5 and the side beam frame 10 are rotatable relative to each other with the central beam support shaft 12 as a fulcrum.

The rocking pillow frame 3 is supported on the center beam 6 of the side beam frame 5 via a plurality of rubber pillow springs 4.
Both ends of the oscillating pillow frame 3 are set in recesses 5 a and 10 a provided in the center of the side beam frames 5 and 10, and projections 21 protruding in the front-rear direction at both ends of the oscillating pillow frame 3. Is a rocking pillow support 30 provided on the side surfaces of the side beam frames 5 and 10.
It is supported by. After the side supports 2 are applied from above the rocking pillow frame 3, the side supports 2 are fixed to the upper surfaces of the side beam frames 5 and 10. The width of both ends of the rocking pillow frame 3 is concave portions 5a and 10a.
The width is smaller than the width, and a gap is formed between them. The side beam frames 5 and 10 facing each other on the left and right sides oscillate with each other around the center beam support shaft 12 within the gap. Is possible.

A circular vertical hole 3a is provided at the center of the rocking pillow frame 3, and the vertical rotary shafts 1 provided downward at the front and rear portions of the bogie body frame 7 are fitted into the vertical holes 3a. The bogies 20 can be rotated around the vertical rotation axis 1 with respect to the bogie body frame 7. An elastic body, for example, a rubber shaft spring 15 is attached between the lower surfaces of the side beam frames 5, 10 separated to the left and right and the seats 16a provided on the front and rear shaft boxes 16, and the side beam frames 5, 10 are made of rubber. It is supported by the seat 16a via the shaft spring 15. The axles 17 and 18 supported by the axle box 16 are provided with wheels 8 on both sides. The drive-side axle 17 is provided with a speed reducer 19 and an electric motor 20, and the bogie main body 7 can be moved forward or backward by driving the electric motor 20 forward or reverse. A brake disk 22 is attached to one end of the drive-side axle 17, and is braked by a bellows brake unit 23. 18
Indicates an axle on the non-drive side.

A steering torsion bar 26 is inserted into and set in a torsion bar receiver 28 provided at a lower portion of each of the side beam frames 5 and 10, and one end of the steering torsion bar 26 is forcibly protruded vertically. A steering lever 27 is provided at the other end with a steering lever 24 projecting up and down. And the forced steering lever 27 and the steering lever protruding up and down
As shown in the drawing, steering links 25 are connected to the upper and lower sides of the vehicle so that moment forces are transmitted in opposite directions on the left and right sides. Connected to the frame. The upper end of the forced steering link 27 is connected is connected link 33 via a forced steering spring tube 32, further the connecting link 3 3 are connected to the link receiving 43 mounted on the carriage body 7.

Next, the operation of the present invention will be described. FIG.
As shown in FIG. 2, a bogie 20 is pivotably connected via vertical rotation shafts 1 provided at the front and rear portions of the body 7 of the vehicle.
However, when the vehicle moves in the direction of the arrow and enters the curved section of the rail 9, a rotational moment is generated in the bogie 20 due to the difference in the forces acting on the front and rear wheels 8 during the curve running, and the bogie 20 turns. Since the bogie 20, the axles 17, 18 and the bogie main body 7 are pin-connected to the forcible operation lever 27, the steering lever 24, etc., the rotational moment of the bogie 20 is transmitted to the axles 17, 18 by the respective levers. 17 and 18 will turn.

A description will now be given with reference to FIG. 2 in addition to FIG. As described above, when the distance between the front and rear wheels 8 located on the left side in the drawing is widened and the forced steering lever 27 is rotated clockwise in the drawing, the torsion bar support of the left and right side beam frames 5, 10 is received.
The steering torsion bar 26 supported by 28 rotates accordingly, and the steering lever 24 disposed on the other end rotates.

The front and rear steering links 25 are connected to the steering lever 24 so that moments are transmitted in directions opposite to each other with respect to the forcible steering lever 27. Therefore, when the steering lever 24 is rotated clockwise, the front and rear steering links 25 are connected. The distance between the front and rear axle boxes 16 located on the right side in the drawing is reduced, so that the front and rear wheels 8 follow the rail 9 inside the radius of curvature.

When the forcible steering lever 27 is rotated clockwise, the upper end thereof is connected to the link receiver 43 provided on the bogie main body 7 via the spring tube 32 and the connection link 33. The bogie 20 rotates with respect to the bogie main body 7 about the vertical rotating shaft 1 fitted in a circular vertical hole 3a provided in the center of the rocking pillow frame 3 mounted via the rubber pillow spring 4 above. Will be. The sudden transmission force at this time is reduced by the spring cylinder 32.

Further, the distance between the front and rear axle boxes 16 due to the increase in the distance between the wheels 8 located on the left side and the approach of the front and rear axle boxes 16 due to the reduction in the distance between the wheels 8 located on the right side are determined by the right and left sides. Rubber shaft spring 15 provided between beam frames 5 and 10
Is deformed, so that such an operation becomes possible. During such an operation, the displacement of the steering torsion bar 26 supported by the torsion bar receiver 28 of the side beam frames 5, 10 is allowed by mutual rotation about the center beam support shaft 12. The rubber pillow spring 4 attached between the rocking pillow frame 3 and the upper and middle beams 6 of the side beam frame 5 is also for reducing the transmission of force.

FIG. 6 shows the relationship between the radius of curvature R (m) of the rail and the lateral wheel pressure Q (ton) in comparison with the conventional bogie and the steering bogie according to the present invention. FIG. 6 shows that according to the present invention, the lateral pressure Q (ton) can be greatly reduced regardless of the radius of curvature. FIG. 7 shows the relationship between the traveling period (month) and the wheel wear amount (mm) by comparing the conventional bogie with the steering bogie according to the present invention. FIG. 7 shows that the present invention can be used for a long period of time by reducing the amount of wheel wear. FIG. 8 also shows the radius of curvature R of the rail.
(M) and the relationship between the lateral pressure and the wheel load ratio (Q / P) are shown by comparing the conventional truck and the steering truck of the present invention, and according to the present invention, the ratio of the lateral pressure to the wheel load ( Q / P) can be significantly reduced.

FIG. 9 shows an arrangement in which the amount of oil applied can be adjusted in accordance with the radius of curvature of the rail when the wheels of the carriage having the above-described steering mechanism are applied to the contact surface in contact with the rail. Generally, an oiling machine for railway wheels has always been used in an "open" state because it is difficult to control opening and closing of a valve according to a radius of curvature. Therefore, the amount of oil applied was the same in both the curved section and the straight section. Usually, since the stop position of the bogie is a straight section, there is a problem that the wheels slip due to oil and the stop accuracy is deteriorated. Conversely, if the oil amount is excessively reduced, there is a problem that the oil amount in the curved section is insufficient, and it is not possible to sufficiently reduce the wear of the wheels (or rails). However, the present invention solves these problems. is there.

The present invention, as shown in FIGS.
A lubrication tank 44 is mounted on the bogie main body 7, and a refueling slide gate 45 is provided corresponding to the shaft box 16. The upper oil supply pipe 46 connected to the lubricating oil tank 44 branches in the middle and is connected to the upper fixed plate 45a of each oil supply slide gate 45. Further, lower oil supply pipes 47 connected to the lower fixed plate 45c of the slide gate 45 face the treads of the corresponding wheels 8, respectively. Each axle box body 16 that supports axles 17 and 18
The fixed push rod de To connected to the slide plate 45b of the slide gate 45, these by constituting the oiling machine.

Although one oil supply system is omitted in FIG. 9, it goes without saying that oil is supplied to all the wheels 8. Further, the steering mechanism is as described above, and the description is omitted. Next, the operation of the oiling machine of the present invention will be described with reference to FIGS. 9 and 10. When the bogie main body 7 enters the curved section of the rail 9, a bogie (not shown) rotates with respect to the bogie main body 7. As described above, the axles 17 and 18 rotate with respect to the bogies via the axle box 16. At this time, to move a hole of the slide plate 45b by sliding the displacement of the axle box 16 which is fixed to the push rod de, lubricants of the upper fixed plate 45a and the lower fixing plate 45c hole and fit the inside lubricating oil tank 44 of Flows through the pipes 46 and 47 and is supplied to the tread of the wheel 8.

Since the displacement ΔX of the shaft box 16 is a function of the radius of curvature, the amount of oil applied is increased in accordance with the radius of curvature, that is, in a section having a small radius of curvature, and is reduced in a section having a large radius of curvature. The position of the hole in the slide plate 45b is adjusted in the following manner. Particularly, in the curved section of the rail 9, the distance between the wheels on the outer rail side of the rail 9 increases and the inner rail side becomes narrower. If the position is set so that the holes are aligned only when the outer rail is widened, it is effective because only the outer rail wheels 8 of the rail where lateral pressure occurs can be oiled.

In the oiling machine of the present invention, it is possible to use oil supply adjusting means other than the slide gate. Using four carriages having a steering mechanism that directly connects the continuous casting factory and the hot rolling factory, oiling machines are arranged at the front and rear of the carriage main body of each carriage that transported the high-temperature long slab. 2 units / unit. Rail radius of curvature up to 300
m, minimum 80m, average 210m, mileage 5400km /
It was a month / daily. In this case, the amount of wheel flange wear was reduced from 1.7 mm / 10 months to 5 mm / 10 months. In addition, the stopping accuracy of the transport trolley was 0.06 to 0 in the conventional friction coefficient.
However, in the present invention, it was stable at 0.1 to 0.12.
% Could be reduced.

[0029]

According to the present invention, when a heavy object such as a high-temperature slab travels along a rail having a small radius of curvature, the attack angle can be reduced.
As shown in the figure, the lateral pressure is reduced to 50% or less compared to the conventional bogie. Therefore, as shown in FIG.
As shown in FIG.
The ratio of Q to wheel load: P decreases. Therefore, (1) the maintenance load required for grinding wheels and the cost were reduced by 10%.

(2) The fluctuation amount of the stopping accuracy is reduced by 10%, and the slab loading / unloading operation is stabilized. (3) The amount of flange wear has been reduced, and the risk of derailment has been reduced. (4) The curve running speed can be doubled, and the transport efficiency has doubled.

(5) The curve running speed was doubled, and as a result, the heating furnace charging temperature was improved by 10 ° C. As described above, the overall effect of the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembling procedure of the present invention.

FIG. 2 is an explanatory view of a mechanism of the present invention.

FIG. 3 is an operation explanatory view of the present invention.

FIG. 4 is a perspective view showing a transport vehicle according to the present invention.

FIG. 5 is a cross-sectional view showing a transport cart according to the present invention.

FIG. 6 is a diagram showing a relationship between a radius of curvature R (m) and a lateral pressure Q (ton).

FIG. 7 is a diagram showing a relationship between a running period (month) and wheel wear (mm).

FIG. 8 is a diagram showing a relationship between a radius of curvature R (m) and a ratio Q / P of lateral pressure to wheel load.

FIG. 9 is a perspective view showing another embodiment of the present invention.

10 is a partially enlarged perspective view showing a portion A in FIG. 9;

FIG. 11 is a plan view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vertical rotation axis 2 Side support 3 Rocking pillow frame 4 Rubber pillow spring 5 Side beam frame 6 Upper middle beam 7 Bogie main body 8 Wheel 9 Rail 10 Side beam frame 11 Lower middle beam 12 Middle beam support shaft 14 Motor 15 Rubber shaft spring 16 Axle box 17 Drive-side axle 18 Non-drive-side axle 19 Reducer 20 Bogie bogie 21 Projection 22 Brake disc 23 Brake unit 24 Steering lever 25 Steering link 26 Steering torsion bar 27 Forced steering lever 28 Torsion bar receiver 29 Insulation room 30 Rocking pillow Reception 31 Axle box retainer 32 Forced steering spring cylinder 33 Connection link 34 Roof 35 Arc-shaped door 36 Operator's cab 37 Door drive 38 Skid rail 39 Extractor 40 Long slab 41 Projection 42 Side beam receiver 43 Link receiver 44 Lubricating oil tank 45 Slide gate 46 Upper oil supply pipe 47 Lower oil supply pipe

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroyuki Kikukawa 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. Chome (without address) Kawasaki Steel Corporation Mizushima Works (72) Inventor Tadashi Miya 1-1, Shibaura, Minato-ku, Tokyo (Toshiba Building) Toshibauchi Corporation (56) References JP-A Hei 4- 87874 (JP, A) JP-A-4-356271 (JP, A) JP-A-59-206257 (JP, A) JP-A-61-211159 (JP, A) JP-A-60-25849 (JP, A) 35-18705 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B61F 5/38-5/46 B61F 5/52 B61K 3/02

Claims (2)

(57) [Claims] [Claim 1] with a respective rotatable structure before and after the bogie relative to the carriage body, and separated into the left and right facing each traveling direction of the front and rear bogies, moreover left
Turn the right side beam frame by a predetermined range to lock it with the rocking pillow frame.
While you and rotatably and structure, arranged wheels running on rails through the elastic member respectively disposed before and after the side sill frame lower surface positioned relative to the left and right sides of each bogie before and after the An axle box body for supporting the axle is mounted, and a steering torsion bar is provided so as to extend between the lower portions of the left and right side beam frames. A vertically protruding steering lever provided at both ends of the steering torsion bar is provided with a steering lever. A front and rear steering link is connected to the upper part and the lower part so that moment forces are transmitted in opposite directions on the left and right sides, and the front and rear axle boxes are connected via the front and rear steering links. A carriage having a steering mechanism, wherein the steering lever is connected to the carriage body via a connection link. 2. A disposed oil supply sliding gate with mounting a lubricating oil tank to the base vehicle body, the oil supply pipe on which is connected to the lubricant tank connected to a fixed plate on the sliding gate and slide gate The lower oil supply pipe connected to the lower fixed plate faces the tread of each corresponding wheel, and a push rod fixed to an axle box supporting the axle is connected to the slide plate of the slide gate so as to be openable and closable. A carriage having the steering mechanism according to claim 1.