JP2019001363A - Caster mounting structure - Google Patents

Abstract

To perform exchanging a caster easily and shortly by enabling exchanging the caster without lifting up a device mounted with the caster.SOLUTION: A caster mounting structure for mounting wheels 44 rotatably supported below a caster body 42, and a caster 40 having a caster mounting rod 46 extending above the caster body 42, on a bottom face of a device (guide frame 36) includes a caster mounting plate 50 which is arranged on the bottom face of the device (36) mounted with the caster 40, and in which a caster mounting groove 50A having an opening end 50B capable of passing in a transverse direction A where the caster mounting rod 46 removes the caster. An upper end of the caster mounting rod 46 inserted into the caster mounting groove 50A in the transverse direction from the opening end 50B is fixed to the caster mounting plate 50.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a caster mounting structure, and in particular, a utility supply pipe (also referred to as a cable bear (registered trademark, hereinafter the same)) for supplying or exchanging gas, power, control signals, etc. to a tundish car of a continuous casting machine in an ironworks. ) Can be applied to casters of utility supply carts (also referred to as cable bear carts) that travel according to the tundish car's travel, and casters that support and travel heavy objects can be easily lifted without lifting heavy objects. Further, the present invention relates to a caster mounting structure that can be replaced in a short time.

  In the continuous casting machine, the molten steel is cast into the mold by receiving the molten steel from the ladle in a tundish, and pouring the molten steel flow from the nozzle (immersion nozzle) at the bottom of the tundish into the mold. In recent years, with the hot use of tundish and the adoption of a prefilling method that injects molten steel into the tundish from before the pouring position, the tundish moving operation has become smoother and the preparation time for reusing the tundish has been shortened. Therefore, a continuous casting machine having a structure in which a tundish is circulated along a circular track has appeared (see, for example, Patent Documents 1 to 3).

  In addition, a cable bear for supplying utilities such as cooling water and argon gas to a tundish circulating on a circular track is known (see Patent Documents 4 and 5).

  Further, as a technique for facilitating the attachment and removal of a caster attached to a heavy object such as a moving base, for example, Patent Document 6 discloses that the lower surface of the base is placed laterally from the attachment member. A receiving rod formed in a protruding state with a fitting groove formed on the protruding end surface, and formed on the upper surface of the caster body so that it can be fitted into the mounting member from the side. A locking groove that is locked in the vertical direction, and a locking rod that is attached to the caster and that can be fitted into the fitting groove from below in a state where the locking groove is locked to the locking portion. A caster mounting structure is described.

  Further, Patent Document 7 describes a caster support jig provided with an upright portion that lifts and supports a caster so that the caster wheel portion can be removed.

Japanese Patent Publication No.52-33049 Japanese Patent Publication No. 53-40566 Utility Model Registration No. 2547394 Japanese Utility Model Publication No. 6-34848 JP-A-5-77002 Japanese Patent No. 3614205 (paragraphs 0028-0035, FIGS. 12-15) Japanese Patent No. 5888568

  However, the caster is attached to the bottom surface of the structure to which the caster is attached, and in order to install the caster, it is necessary to lift the device and make a space for removing the caster.

  In FIG. 1, an example of the attachment state of the conventional caster is shown. The caster mounting rod 16 extending upward from the main body 14 of the caster 10 having the wheels 12 on the lower side is inserted from below the device 20 to which the caster 10 is mounted, and is fixed by a caster fixing nut 18. In the case of this structure, it is necessary to lift the device 20 to which the caster 10 is attached, and make a space for replacing the caster 10 before exchanging. However, depending on the facility, there is no clearance between the device 20 to which the caster 10 is attached and the structure above the device 20, or there is a structure that is difficult to move or remove to the upper portion of the device 20 to which the caster 10 is attached. In some cases, the device 20 cannot be lifted. In such a case, it is difficult to replace the caster 10, and the device 20 to which the caster 10 is attached is moved to a place where there is no interference, or the caster attachment part is cut along with the surrounding parts and re-welded. However, it takes a long time, and there are problems such as distortion caused by cutting.

  The present invention has been made to solve the above-described conventional problems, and enables the caster to be replaced without lifting the device to which the caster is attached, so that the caster can be replaced easily and in a short time. Is an issue.

  The present invention provides a caster mounting structure for mounting a caster having a wheel rotatably supported below a caster main body and a caster mounting rod extending above the caster main body to the bottom surface of the apparatus. A caster mounting plate formed on a bottom surface of the device and formed with a caster mounting groove having an open end through which the caster mounting rod can be removed in a lateral direction from which the caster is removed; An upper end of the caster mounting rod inserted in the direction is fixed to the caster mounting plate to solve the above problem.

  Here, the caster mounting groove can be formed in the caster mounting plate in an L shape extending in a caster removing direction connected to the opening end and in a direction orthogonal to the caster removing direction.

  The caster mounting plate is provided with a closed hole independent from the caster mounting groove, and a hole through which the fixture passing through the closed hole can be inserted and a hole through which the caster mounting rod can be inserted. The caster pull-out prevention plate is provided, and the fixing tool passing through the caster mounting rod and the closed hole can be fixed with the caster pull-out prevention plate interposed therebetween.

  Moreover, the hole provided in the caster extraction preventing plate and through which the fixing tool can be inserted can be a long hole that is long in a direction orthogonal to the removal direction of the caster.

  Also, the height of the caster body can be adjusted.

  According to the present invention, since it is not necessary to lift the caster by removing the caster in the lateral direction, the caster can be replaced easily and in a short time. In addition, there is no need to create a space necessary for exchanging casters above the equipment.

Sectional drawing which shows an example of the conventional caster mounting structure Sectional drawing of the whole cable bear cart which shows the example of the actual machine with which embodiment of the caster attachment structure concerning this invention is applied 2 is an enlarged cross-sectional view of a portion III in FIG. 2 showing the guide frame portion. The perspective view which shows the embodiment of the caster mounting structure which concerns on this invention, and decomposes | disassembles and shows a part

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the content described in the following embodiment and an Example. In addition, the constituent elements in the embodiments and examples described below include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in the so-called equivalent range. Furthermore, the constituent elements disclosed in the embodiments and examples described below may be appropriately combined or may be appropriately selected and used.

  In the embodiment of the present invention, the tundish car 24 side as shown in FIG. 2 (cross-sectional view of the entire cable bearer carriage) and FIG. 3 (III-section enlarged cross-sectional view of FIG. 2 showing the guide frame portion) is provided. The vertical cable bearer 32 disposed on the lower side of the rail installation base plate 30B of the machine frame 30 in which the arc-shaped traveling rail 28 of the cable bearer truck 26 for utility connection is installed is prevented. This is applied to the mounting of a double wheel caster (hereinafter simply referred to as a caster) 40 of the guide frame 36 used as the above. In the figure, 22 is a floor, 30A is a ladle operator deck formed in the ceiling of the machine frame 30, 30C is an intermediate floor formed in the lower part, and 62 is a cable bearer 32 in contact with the guide frame 36. A side roller 64 for preventing is a caster of the cable bear 32.

  As shown in detail in FIG. 3, there are casters 40 on the bottom surface of the guide frame 36, but on the upper part of the guide frame 36, there is a rail installation base plate 30 </ b> B of the mechanical frame 30 that is a structure that is difficult to remove, The guide frame 36 could not be lifted.

  Therefore, in the present embodiment, as shown in FIG. 4, the caster 40 includes a wheel 44 that is rotatably supported below the caster body 42 and a caster mounting rod 46 that extends above the caster body 42. In order to attach to the bottom surface of the guide frame 36 which is an equipment to be attached, the caster mounting rod 46 is disposed on the bottom surface of the guide frame 36 in a horizontal lateral direction (referred to as a caster removal direction) A in which the caster 40 is removed. A caster mounting plate 50 having a caster mounting groove 50A having an open end 50B that can pass therethrough is provided, and an upper end of a caster mounting rod 46 that is horizontally inserted into the caster mounting groove 50A from the open end 50B. The caster is mounted by a nut 48 for fixing the caster. It is obtained so as to secure the 50.

  In the present embodiment, the caster mounting plate 50 is further provided with a closed hole 50C independent of the caster mounting groove 50A, and the caster removal direction A in which the bolt 54 passing through the closed hole 50C can be inserted. A caster removal prevention plate 52 is provided, which is provided with a long hole 52A elongated in a perpendicular direction (also simply referred to as a perpendicular direction) B and a hole 52B through which the caster mounting rod 46 can be inserted. The upper part of the caster mounting rod 46 is fixed with the caster fixing nut 48 with the bolts 54 passing through the elongated hole 52A and the closed hole 50C inserted from above and fixed with the nut 56 from below. It is a thing.

  The caster mounting groove 50A is formed in the caster mounting plate 50 in an L shape extending in a caster removal direction A connected to the opening end 50B and a direction B perpendicular to the caster removal direction A, and the caster 40 is in the caster removal direction A. It is designed not to slip easily.

  Further, the caster extraction preventing plate 52 prevents the caster 40 from being displaced in the direction B perpendicular to the caster removal direction A.

  Here, the closed hole provided in the caster extraction preventing plate 52 through which the bolt 54 can be inserted is a long hole 52A extending in the orthogonal direction B, so that the caster extraction prevention plate 52 can be easily fixed. It is to do.

  Further, the height of the caster main body 42 can be finely adjusted, so that the caster 40 can be easily detached and attached from the caster mounting plate 50.

  In the above-described embodiment, the caster mounting plate 50 is separated from the guide frame 36. However, the caster mounting groove 50A can be formed on the bottom surface of the guide frame 36, for example, by integrating both of them. Also, the fixture is not limited to a combination of bolts and nuts.

  In the above embodiment, the present invention is used to prevent the vertical cable bearer 32 of the cable bearer carriage 26 that supplies or receives gas, electric power, control signals, and the like to the tundish car 24 of the continuous casting machine. Although applied to the twin-wheel caster 40 of the guide frame 36, the application object of the present invention is not limited to this, and it is generally attached to a heavy object other than the mounting structure of the caster 64 of the cable bear 32 and the tundish car of the continuous casting machine. The same can be applied to the caster mounting structure. The type of caster is not limited to twin wheel casters.

24 ... Tundish car 26 ... Cable bear truck 30 ... Mechanical frame 30B ... Rail mounting base plate 32 ... Cable bear 36 ... Guide frame 40, 64 ... (Two wheels) Caster 42 ... Caster body 44 ... Wheel 46 ... Caster mounting rod 48 ... Caster fixing nut 50 ... Caster mounting plate 50A ... Caster mounting groove 50B ... Open end 50C ... Closed hole 52 ... Caster pull-out prevention plate 52A ... Long hole 52B ... Hole 54 ... Bolt 56 ... Nut A A ... Caster removal direction B ... Orthogonal direction

Claims (5)

In a caster mounting structure for mounting a wheel supported rotatably below a caster body and a caster mounting rod extending above the caster body to the bottom surface of the device,
A caster mounting plate formed on a bottom surface of a device to which the caster is mounted, on which a caster mounting groove having an open end that allows the caster mounting rod to pass through in a lateral direction to remove the caster is formed;
The caster mounting structure, wherein an upper end of the caster mounting rod inserted laterally from the open end into the caster mounting groove is fixed to the caster mounting plate.   The caster mounting groove is formed in the caster mounting plate in an L shape extending in a caster removal direction connected to the opening end and in a direction orthogonal to the caster removal direction. Caster mounting structure. The caster mounting plate is provided with a closed hole independent from the caster mounting groove,
A caster pullout prevention plate in which a hole through which the fixture passing through the closed hole can be inserted and a hole through which the caster mounting rod can be inserted are provided;
The caster mounting structure according to claim 1 or 2, wherein a fixture that passes through the caster mounting rod and the closed hole is fixed with the caster extraction preventing plate interposed therebetween.   The caster mounting structure according to claim 3, wherein a hole provided in the caster extraction prevention plate and into which the fixing tool can be inserted is a long hole extending in a direction orthogonal to the caster removal direction. .   The caster mounting structure according to claim 1, wherein a height of the caster body is adjustable.

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