JPH10119784A - Conveyor truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveyor truck that can thermally shield a driving part such as a hydraulic cylinder effectively even in case of conveying a high temperature coil of 700-1000 deg.C and can horizontally turn conveyed material such as the high temperature coil supported on a skid while dissolving looseness of the skid. SOLUTION: A load support body 16 made of ceramics, a heat insulating plate made of SUS or the like, and heat insulating material made of ceramics fiber are interposed in a clearance between a skid 11 and a top plate 10 so as to be able to thermally shield a hydraulic cylinder 14 part effectively even from a high temperature coil of 700-1000 deg.C. Laminated rubber plates 22 are interposed between a shaft support plate of a guide roller 6 and guide roller fitting parts 7, and a gap between the guide roller 6 and a guide rail part 9 of a skid support column 8 is always kept in a zero state by the elasticity of the laminated rubber plates 22 so as to dissolve looseness of the skid 11. Turning mechanism composed of turning drive mechanism 5 and automatic aligning type turning bearings 4, 15 are further provided to make the high temperature coil in a lateral hole state stably turnable in a horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport trolley, and more particularly to a hot rolled steel coil (hereinafter referred to as "hot rolled steel") in an ironworks.
This is useful when applied to a high-temperature coil transport cart that transports high-temperature coils.

[0002]

2. Description of the Related Art FIG. 7 is a side view showing the structure of a conventional high-temperature coil carrier used in an ironworks.

As shown in FIG. 1, the conventional high-temperature coil carrier cart is provided with a cart frame 50, a vertical frame 51 provided on the cart frame 50, and upper and lower inner portions of the vertical frame 51 opposed to each other. A guide roller 52, a skid support column 54 that is guided vertically by engagement of a vertical guide rail 53 with the guide roller 52, and a bolt 61 with a gap 60 provided in an upper surface plate 55 of the skid support column 54.
And a hydraulic cylinder 57 vertically provided on the bogie frame 50 and having a piston rod tip connected to the lower surface of the support column upper plate 55 to drive the skid 56 up and down together with the support column 54. I have.

A plurality of heat insulating materials 58 made of ceramic or the like are interposed in a gap 60 between the lower surface of the skid 56 and the upper surface of the support column upper plate 55 while leaving a space 59, so that the gap 60 serves as a heat insulating portion. The heat insulating portion insulates between the skid 56 and the support column upper plate 55.

[0005] According to the high-temperature coil carrier trolley having the above structure,
The skid 56 is raised and lowered by the hydraulic cylinder 57, and a high-temperature coil of about 300 ° C. is fed from the winder of the hot rolling line to the skid 56.
When the skid 56 is received above and transferred to a receiving place of another transfer system, the temperature of the skid 56 is increased by the high-temperature coil. The heat of the skid 56 is transferred by the heat insulating material 58 and the space 59 to the support column upper plate just below the skid 56. Since the hydraulic cylinder 57 is hardly transmitted to the hydraulic cylinder 55, it is possible to prevent the hydraulic cylinder 57 from being damaged or damaged due to heat.

[0006]

However, in the recent operation of the hot rolling line, the temperature of 700 ° C.
Conveyance of a steel coil at 1000 ° C. has been required. On the other hand, in the structure of the heat insulating portion of the conventional high-temperature coil carrier (the structure including the heat insulating material 58 and the space 59), Therefore, when the high-temperature coil of 700 ° C. to 1000 ° C. is transported, the hydraulic cylinder 57 cannot be effectively heat shielded. Therefore, the above-mentioned conventional high-temperature coil conveyance cart cannot be used for conveying a high-temperature coil of 700 ° C to 1000 ° C.

When the steel sheet coil is conveyed in the high temperature state as described above, the state of the high temperature coil is changed from the horizontal hole state (the state where the hole at the center part is oriented in the horizontal direction) to the vertical hole state (the center part). (The state where the holes are oriented vertically) or when the roller conveyor is transported in the vertical hole state, the side edges of the high-temperature coil become severely damaged. Therefore, instead of the conventional high-temperature coil roller conveyor conveyance in the vertical hole state, long-distance conveyance of the high-temperature coil in the horizontal hole state is required.
To this end, the high-temperature coil in a horizontal hole state is horizontally turned on the bogie, and the skid is loose due to a structural gap (a gap between the guide roller 52 and the guide rail portion 53) in the skid support portion. It is necessary to eliminate the problem.

Accordingly, the present invention has been made in view of the above prior art,
Even when a high-temperature coil of 0 ° C to 1000 ° C is conveyed, the drive unit such as a hydraulic cylinder can be effectively shielded from heat, and a conveyed object such as a high-temperature coil supported on a skid can be horizontally turned. It is an object of the present invention to provide a transport vehicle capable of reducing the skid rattle.

[0009]

Means for Solving the Problems A first method for solving the above problems is described below.
The carrier of the invention of the invention is a carrier having a gap between the lower surface of the skid that receives the object to be conveyed and the upper surface of the support portion of the skid, and the gap having a heat insulating portion. A ceramic load support interposed so as to be in contact with the lower surface of the skid and the upper surface of the support portion; a heat shield interposed so as to be located in a space around these load supports; A heat-insulating material made of ceramic fiber is provided between the upper surface of the supporting portion or between the heat-insulating plate and the lower surface of the skid.

According to a second aspect of the present invention, there is provided a transport vehicle having a skid for receiving an object to be transported, and a support portion for supporting the skid so as to be able to move up and down, wherein the support portion is fixed to a lift portion side or fixed. A guide rail portion is provided on one of the upper and lower portions, and a guide roller for contacting the guide rail portion is provided on the other of the elevating portion and the fixed portion, and the guide roller is provided on the elevating portion side. Alternatively, the guide roller is fixed to the fixed portion via an elastic member, and the elasticity of the elastic member presses the guide roller against the guide rail portion.

According to a third aspect of the present invention, there is provided a transport vehicle having a skid for receiving an object to be transported and a support portion for supporting the skid, wherein the support portion pivots the skid in a horizontal direction. And a turning mechanism for causing the turning mechanism.

[0012] Further, according to a fourth aspect of the present invention, there is provided the carrier according to the third aspect.
In the transporting cart according to the invention, the turning mechanism includes a self-aligning type bearing.

Therefore, according to the transport cart of the first aspect of the present invention, the very high temperature of the transported object (700 ° C. to 1000 ° C.)
Even when transferring high-temperature coils, etc., the direct heat conduction from the skid to the support is largely blocked by the ceramic load support with low thermal conductivity, and at the same time, from the skid to the support. The radiant heat is blocked by a heat insulating material made of ceramic fiber and a heat insulating plate (made of SUS or the like). For this reason, it is possible to reliably prevent the supporting portion from becoming hot due to the high-temperature conveyed object, and to keep the temperature of the hydraulic cylinder portion sufficiently safe even if, for example, a hydraulic cylinder is provided below the supporting portion. It can be maintained in an acceptable temperature range.

According to the second aspect of the present invention, since the guide roller is pressed against the guide rail by the elasticity of the elastic member, the guide roller and the guide roller are in close contact with each other and are always held in a state where the gap is zero. Therefore, it is possible to eliminate the rattling of the skid caused by the gap between the guide roller and the guide rail as in the related art.

According to the third aspect of the present invention, the object to be conveyed (such as a high-temperature coil placed in a horizontal hole) is horizontally turned by the turning mechanism to arbitrarily change the direction of the object to be conveyed. be able to.

Further, according to the transport cart of the fourth aspect of the present invention, since the turning mechanism is provided with the self-centering type bearing, the rattling of the skid due to the turning mechanism can be prevented.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view showing a configuration of a high-temperature coil carrier according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIG. FIG. 4 is an enlarged cross-sectional view showing the configuration of FIG. 3, FIG. 4 is a plan view taken along the line IV-IV in FIG. 3, and FIGS. 5 and 6 are enlarged explanatory views showing the configuration of the portion V in FIG.

As shown in FIG. 1, in the high-temperature coil carrier 1 according to the present embodiment, a self-centering type slewing bearing 4 is provided on a trolley frame 2, and the slewing part ( The guide roller support frame 3 is provided on (upper part in the figure) 4a.

The turning portion 4a of the turning bearing 4 is horizontally turned by a turning drive mechanism 5 provided on the side of the turning bearing 4. That is, the turning drive mechanism 5 is provided with a motor 5 a provided on the bogie frame 2, a drive gear 5 b mounted on a rotating shaft of the motor 5 a, and rotatably provided on the bogie frame 2 to mesh with the drive gear 5 b. Transmission gear 5
c, and a ring gear 5d provided on the outer peripheral portion of the revolving portion 4a of the revolving bearing 4 and meshing with the transmission gear 5. The driving gear 5b, the transmission gear 5c and the ring gear 5d Is transmitted to the turning unit 4a via the control unit, thereby turning the turning unit 4 horizontally.

On the other hand, four guide rollers 6 are provided on the upper and lower sides of both sides of the guide roller support frame 3 so as to face each other.
Is provided. These guide rollers 6 are engaged with guide rails 9 provided at the center of both sides of the skid support column 8 inserted inside the guide roller support frame 3 to move the guide roller support frame 3 up and down. invite.

The two guide rollers 6 on one side (the right side in FIG. 2) are rotatably supported on both sides of the rotation shaft by a shaft support plate 23, and these shaft support plates 23 are supported by the guide roller support frame 3. While being directly fixed to the guide roller mounting portion 7, the other two guide rollers 6 on one side (the left side in FIG. 2) are rotatably supported on both sides of the rotating shaft by a shaft support plate 23, and these shaft supports are provided. The plate 23 is fixed to the guide roller mounting portion 7 via a highly durable laminated rubber plate 22.

More specifically, as shown in FIG. 5, the interval between the opposing surfaces of the guide rollers 6 and 6 obtained with the laminated rubber plate 22 interposed therebetween is S mm, and as shown in FIG.
The interval between the touch surfaces of the vertical guide rails 9, 9 of the skid support column 8 is S + 1 mm, and the skid support column 8
Is inserted between the guide rollers 6 and 6 so that the laminated rubber plate 22
The guide roller support frame 3 and the skid support column 8 are combined in a state of being compressed by mm. For this reason, the guide roller 6 is pressed against the touch surface of the guide rail portion 9 by the elasticity of the laminated rubber plate 22, and the guide roller 6 and the guide rail portion 9 are kept in close contact with each other so that the gap is always zero.

In the above description, the guide roller 6 is provided on the guide roller support frame 3 on the fixed portion side, and the guide rail portion is provided on the skid support column 8 on the elevating portion side. However, the present invention is not limited to this. Alternatively, a guide rail portion may be provided on the fixed portion side, and a guide roller may be provided on the elevating portion side.

A hydraulic cylinder 14 is provided in the hollow portion of the skid support column 8. This hydraulic cylinder 14
Is vertically provided on the bogie frame 2, and the tip of the piston rod is connected to the lower surface of the top plate 10 of the skid support column 8 via a self-centering type rotation bearing 15.

A skid 11 is provided on the top plate 10. As shown in FIGS. 3 and 4, the top plate 10 and the skid 11 are connected to each other by bolts 17 with a gap 18 between the upper surface and the lower surface thereof. The gap 1
8 is a heat insulating part.

That is, at four symmetrical positions on the top plate 10, ceramic load supports 16 are interposed so as to be in contact with the upper surface of the top plate 10 and the lower surface of the skid 11. At present, zirconia is the most suitable ceramic for the load support 16. Zirconia has thermal conductivity 1/10 of steel
, The compressive strength is high, and the coefficient of thermal expansion is almost the same as that of steel.

Further, two heat insulating plates 20 made of SUS or the like are interposed in the gap 18 in a non-fixed manner. These heat insulating plates 20 are provided with a gap 1 excluding the load support 16 and the bolt 17.
8 has spread to the whole area. That is, the load support 16 and the bolt 17 penetrate the opening 20 a formed in the heat insulating plate 20, and the load support 16 and the bolt 17
The heat insulation plate 20 is located around.

In the center of the gap 18, a felt-like heat insulating material 19 made of ceramic fiber is interposed. The heat insulating material 19 is attached to the upper surface of the top plate 10 and is located between the upper surface and the heat insulating plate 20. The heat insulating material 19 may be attached to the lower surface of the skid 11 so as to be located between the lower surface and the heat insulating plate 20. In addition, not only the center of the gap 18 but also the load support 16 and the bolt 17
It may be provided in the entire area inside the gap 18 excluding the portion.

Reference numeral 12 in FIG. 3 denotes a liner for supporting a steel sheet coil, which is joined to the upper surface of the skid 11 by bolts 24.

Therefore, according to the high-temperature coil transporting trolley having the above structure, when the skid 11 is raised and lowered by the hydraulic cylinder 14 and the high-temperature coil 13 is received from the winder of the hot rolling line onto the skid 11 and transported, the liner 12 The temperature of the skid 11 becomes high due to the heat of the high-temperature coil 13 transmitted through the portion, and the heat of the skid 11 is directly transmitted to the top plate 10 of the skid support column 8 via the load support 16 and the bolt 17 and the gap 18 The top plate 10 is radiated to the top plate 10 and heated.

However, at this time, the top plate 1
Most of the direct heat transfer to zero is blocked by the load support 16 because the load support 16 is made of ceramics with low thermal conductivity. At the same time, the radiant heat from the skid 11 to the top plate 10 is divided into a heat insulating material 19 made of ceramic fiber attached to the upper surface of the top plate 10 or the lower surface of the skid 11 and a heat insulating plate 20 made of SUS or the like spreading in the gap 18.
And is interrupted by. For this reason, even if the high-temperature coil 13 is a steel plate coil having a higher temperature (700 ° C. to 1000 ° C.) than the conventional one, the top plate 10 is effectively heat shielded and the top plate 10
Can be sufficiently suppressed. Therefore, the top 10
Can be maintained in a sufficiently safe allowable temperature range of the hydraulic cylinder 14 provided below.

Further, since the laminated rubber plate 22 is interposed between the shaft support plate 23 of the guide roller 6 and the guide roller mounting portion 7, the elasticity of the laminated rubber plate 23 causes the guide roller 6 and the guide rail portion 9 to move. Can always be kept in a zero state, so that rattling at the time of transporting the skid 11 and at the time of vertical movement and horizontal turning due to this gap can be eliminated. Therefore, the high-temperature coil 13
Can be safely transported over a long distance in a horizontal hole state.

Further, by providing the turning mechanism including the turning drive mechanism 5 and the turning bearings 4 and 15, the skid 11 is turned horizontally together with the guide roller support frame 3 and the skid support column 8 to form a horizontal hole. The direction of the high-temperature coil 13 can be arbitrarily changed. Therefore,
By changing the direction of the high-temperature coil 13, the high-temperature coil 13 can be relayed to another elevating skid-type coil transfer system having a different direction, and long-distance coil transfer in a horizontal hole state becomes possible. Moreover, the use of the self-centering type slewing bearings 4 and 15 prevents the skid 11 from rattling due to the slewing mechanism, and stably supports the skid 11 supporting the high-temperature coil 13 on the high-temperature coil carrier 1. Can be turned horizontally.

It should be noted that the present invention is not limited to the above-described embodiment, and that the shape and structure may be changed within the scope of the present invention described in the appended claims.

[0036]

As described above in detail with the embodiments of the present invention, according to the carrier of the present invention, a ceramic load support is provided in the gap between the lower surface of the skid and the upper surface of the support. By interposing a heat-insulating plate made of SUS or the like and a heat-insulating material made of ceramic fiber, the support portion of the skid can be sufficiently heat-shielded even when a very high temperature object is conveyed. Therefore, if the present invention is applied to, for example, a high-temperature coil transporting trolley of a steel mill, it is possible to transport a steel sheet coil of 700 ° C. to 1000 ° C., which is higher than before, to a destination while effectively shielding the hydraulic cylinder portion from heat. it can.

Further, by pressing the guide roller against the guide rail portion by the elasticity of the elastic member, the guide roller and the guide rail can always be maintained in a zero gap state, and the skid caused by this gap can be maintained. The rattling can be eliminated. For this reason,
For example, a high-temperature coil in a side hole state can be safely transported over a long distance.

Further, by providing the turning mechanism, the conveyed object can be arbitrarily horizontally turned by the turning mechanism. For example, a high-temperature coil in a horizontal hole state can be turned horizontally to change the direction of the high-temperature coil and relayed to another elevating skid type coil transfer system in a different direction, enabling long-distance coil transfer in a horizontal hole state Become.

Further, by providing a self-aligning type bearing to the turning mechanism, the rattling of the skid due to the turning mechanism is prevented, and the skid 11 supporting the object to be transferred on the transfer carriage can be stably leveled. Can be turned.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a high-temperature coil carrier according to an embodiment of the present invention.

FIG. 2 is a transverse sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged cross-sectional view showing a configuration of a part III in FIG. 2;

FIG. 4 is a plan view taken along line IV-IV in FIG. 3;

FIG. 5 is an explanatory diagram showing an enlarged configuration of a V portion in FIG. 2;

FIG. 6 is an explanatory diagram showing a configuration of a V section in FIG. 2 in an enlarged manner.

FIG. 7 is a side view showing a configuration of a conventional high-temperature coil carrier cart used in an ironworks.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature coil conveyance trolley 2 Cart frame 3 Guide roller support frame 4,15 Self-aligning type slewing bearing 5 Slewing drive mechanism 5a Motor 5b Drive gear 5c Transmission gear 5d Ring gear 6 Guide roller 7 Guide roller mounting part 8 Skid support column Reference Signs List 9 vertical guide rail section 10 skid support column top plate 11 skid 12 liner 13 high temperature coil 14 hydraulic cylinder 16 ceramic load support 17 bolt 18 gap 19 ceramic fiber heat insulator 20 SUS etc. heat insulator 21 heat insulator Opening 22 laminated rubber plate 23 guide roller shaft support plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shoji Shibata 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division

Claims (4)

[Claims] 1. A lower surface of a skid for receiving a transferred object,
A carrier having a gap between the upper surface of the support portion of the skid and a heat insulating portion provided with the gap, wherein the heat insulating portion is interposed so as to be in contact with the lower surface of the skid and the upper surface of the support portion. Ceramic load supports, a heat insulating plate interposed so as to be located in the space around these load supports, and between the heat insulating plate and the upper surface of the support portion or between the heat insulating plate and the lower surface of the skid. And a heat insulating material made of ceramic fiber interposed between the carrier and the carrier. 2. A transport trolley having a skid for receiving an object to be transported and a support portion for supporting the skid so as to be able to move up and down, wherein a guide is provided on one of a lifting portion side and a fixed portion side of the support portion. A rail portion is provided, and a guide roller that contacts the guide rail portion is provided on one of the lift portion side and the fixed portion side, and the guide roller is provided with an elastic member on the lift portion side or the fixed portion side. Wherein the guide roller is pressed against the guide rail by the elasticity of the elastic member. 3. A transport trolley having a skid for receiving an object to be transported and a support portion for supporting the skid, wherein the support portion includes a turning mechanism for turning the skid in a horizontal direction. Transport trolley. 4. The transport trolley according to claim 3,
The carriage is characterized in that the turning mechanism includes a self-aligning type bearing.