JPH061380U - Hanging equipment for rolls - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a roll hanger that can suspend two rolls at the same time and that does not damage the drive unit due to the roll reaction force when the roll is suspended, and that has excellent workability and safety. . [Structure] A suspension arm having one eye end portion formed at the lower end, a swivel plate having a roll insertion hole pivotally supported by an upper portion of the eye end portion to move in and out of the eye end portion, and a suspension arm. And a drive unit that is held by the arm and that causes the swivel plate to swivel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a roll suspender capable of suspending and transporting not only one roll but also two rolls at the same time.

[0002]

[Prior art]

 In general, a roll hanger is provided with a pair of vertical arms that hang from both ends of a horizontal suspension beam at the lower end of which a claw that holds the roll shaft neck is provided, or a hole through which the roll shaft neck is loosely inserted (eye end). The pair of arms holds both ends of the roll and lifts the roll horizontally. Normally, the structure is such that each roll is hung. However, for example, when transporting the rolling rolls of a rolling mill, it is necessary to transport various types of rolls from small rolls to large rolls. There is a time loss. Therefore, conventionally, a hanging tool for rolls capable of hanging two rolls has been known. As an eye-end type for hanging two arms, a roll insertion hole is formed at the lower end and the middle of the arm corresponding to the height position of each roll placed above and below, respectively. A structure in which the arm is configured to move along the floor on which the roll is placed via the rolling wheels provided at the lower end (Japanese Utility Model Laid-Open No. 62-6907), or two upper and lower same-shaped halves formed on the suspension arm. A roll lifter (Japanese Unexamined Utility Model Publication No. Sho 64-3780) is known in which a circular notch is configured to be openable and closable and a roll chock rotating mechanism capable of raising and lowering is combined.

[0003]

[Problems to be solved by the device]

 All of the above-described conventional roll hangers have a vertical arm with a direct eye end formed at the lower end and in the middle, and even when used as a single roll hang, there are two holes at the top and bottom. Therefore, the strength of the arm becomes weaker, and a suspension arm structure with a large width must be used to cover the decrease in strength due to the hole diameter of each eye end. Further, in the above-mentioned conventional example, since the fixing holes have the same shape in the upper and lower sides, the size of the two rollers to be suspended is also limited, and there is a difficulty in versatility.

Further, one large-diameter eye end is formed at the lower end of the arm, and a slide plate having two small-diameter roll insertion holes formed so as to overlap the eye end is vertically slidable on the side of the arm. It is also proposed that the slide plate is provided and suspended by a cylinder attached to the arm, but this structure has a structure in which when the slide plate is lowered and the roll held at the eye end of the plate is suspended, If the arm is lowered inadvertently, the reaction force from the landed roll may be applied to the cylinder via the slide plate, damaging the cylinder and its mounting portion.

The present invention provides a roll hanger that can suspend two rolls having different diameters at the same time and is not damaged by the reaction force from the landed roll side when the roll is suspended. is there.

[0006]

[Means for Solving the Problems]

 The roll suspension according to the present invention comprises a vertical suspension arm having an eye end portion formed at a lower end thereof, and a roll insertion member pivotally supported by an upper portion of the eye end portion so as to be able to move in and out of the eye end portion. A swivel plate having a hole, and a drive device that is held by the suspension arm and that swivels the swivel plate. When the roll insertion hole enters the eye end portion, the roll is rolled downward in the eye end portion. It was designed so that the hanging space of

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 are a partial front view and a side sectional view of a roll hanger according to an embodiment of the present invention. A substantially elliptical eye end portion 20 is formed at the lower end of the suspension arm 8 that is suspended from a lifter body frame that is horizontally suspended by a crane (not shown). A swivel plate 21 that swivels around a horizontal axis is provided at the fulcrum. In this embodiment, the swivel plate 21 is formed with a roll insertion hole 22 which is smaller than the eye end part 20, and the top part of the plate 21 has a protruding shoulder part 23 on both sides of the top part so as to define a concave shape as a whole. Has been formed. A pair of recessed grooves are formed at the top of the end portion 20 of the arm 8 and a central portion of the top is formed with a protrusion 24 (described later) forming an inverted chevron-shaped lower surface 24a.

In the swivel plate 21, the protruding shoulder portion 23 is inserted into the concave groove at the upper end of the eye end portion 20, and at this position, the pivot pin which is inserted from both sides of the arm 8 into the inverted valley-shaped protrusion 24. 25 so that the swivel plate 21 can swivel about the pin 25 as a fulcrum from a hanging position (FIG. 1) flush with the arm 8 to a position perpendicular to the arm 8 (FIG. 2). It has become. Reference numeral 26 is a stopper provided on the left and right sides of the swivel plate 21, and the swivel plate 21 contacts the eye end portion 20 at the hanging position. Then, the entire swivel plate 21 is housed in the eye end portion 20. As shown in FIG. 1, the roll 10 that is loosely inserted into the roll insertion hole 22 of the swivel plate 21 is installed in the eye end portion 20 below the swivel plate 21 with the swirl plate 21 accommodated in the eye end portion 20. In addition to the above, there is a suspension space in which the shaft end of the roll 30 can be loosely inserted, which allows the rolls 10 and 30 to be suspended in the roll insertion hole 22 of the swivel plate 21 and the eye end portion 20 of the arm 8, respectively. Be touched.

As shown in FIG. 2, a motor cylinder 27 is pivotally attached to the inner surface of the suspension arm 8 (side surface on the same side as the stopper 26), and the tip of the piston rod 28 of the cylinder 27 is pivotally supported on both sides of the arm. It is connected to a bracket 38 of the swivel plate 21 via a connecting pin 29 at a position below the pin 25. When the swivel plate 21 is swung down and down by the motor cylinder 27 to suspend two rolls, the load of the roll 10 suspended by the swivel plate 21 is carried by the pivot pin 25 of the swivel plate 21, and the motor cylinder 27 It has no effect. Further, in the case of suspending from this state, even if the arm 8 inadvertently descends after the roll 10 lands and the roll 10 collides with the upper edge of the roll insertion hole 22 of the swivel plate 21 (see the broken line in FIG. 1), This abutting force is similarly received by the pivot pin 25 via the swivel plate 21, and an excessive load does not act on the motor cylinder 27.

When a single large-diameter roll 37 is suspended, the swivel plate 21 is raised and swiveled by the motor cylinder 27 to make it horizontal, and the roll 37 is suspended by the eye end portion 20 of the suspension arm 8. In the case of hanging in this state, even if the arm 8 further descends after the roll 37 has landed, the roll 37 collides with the inverted valley-shaped protrusion 24 at the center of the top of the eye end 20 of the hanging arm 8 as shown in FIG. By itself, it does not come into contact with the swivel plate 21, and therefore does not damage the swivel plate 21 and the motor cylinder 27. In consideration of the case where the swivel plate 21 that has swung to a horizontal state hits an external object below as the arm 8 descends, the swivel plate protection stopper 31 is attached to the arm 8 as shown in FIG. It can also be provided on the inner side of the swivel plate 21.

FIGS. 4 and 5 are a partial front view and a side sectional view of a roll hanger according to another embodiment of the present invention. In this embodiment, the eye end portion 20 at the lower end of the arm is formed by a long hole having a circular shape on the lower side and a rectangular shape on the upper side, and the swivel plate 21 housed on the upper side in the eye end portion 20 is substantially rectangular and rolls in the center. An insertion hole 22 is formed, and is pivotably supported by pivot pins 25 mounted on both sides of the arm on the horizontal center line of the roll insertion hole 22. The motor cylinder 27 is pivotally attached to the arm 8 above the eye end portion 20, and the tip of the piston rod 28 is connected to the position below the pivot pin 25 of the swivel plate 21 via the bracket 38. This is similar to the second embodiment. When the swivel plate 21 is pivotally supported at a position on the lateral center line of the swivel plate 21 as in the embodiment of FIGS. 4 and 5, when the swivel plate 21 is swung to the horizontal position, the arm on the motor cylinder mounting side is attached. The length of the swivel plate 21 protruding to the side surface is shorter than that in the case of FIG. 2, and the safety during the roll hanging work is improved. As in the case of FIG. 1, the load from the roll side at the time of hoisting and hoisting the rolls 10 and 30 is supported by the swivel plate 21 and its pivot pin 25, and no load acts on the motor cylinder 27. A small cylinder can be used.

FIGS. 6 and 7 are a partial front view and a side sectional view showing still another embodiment of the present invention. In this embodiment, one end of a swivel plate 21 having a roll insertion hole 22 on the upper portion of the oval eye end portion 20 at the lower end of the suspension arm 8 is pivotally supported via a pivot pin 25 parallel to the axis of the roll insertion hole. As a result, the swivel plate 21 swivels on the side surface of the suspension arm 8, and the roll insertion hole 22 overlaps the eye end portion 20 at the lowered swivel position. In this state, the rolls 10 and 30 are held in the eye end portion 20 and the roll insertion hole 22, respectively.

As shown in FIG. 7, a driven sprocket 32 that rotates integrally with the swivel plate 21 is pivotally supported on the pivot pin 25, and a rotary gear 33 attached to the suspension arm 8 is provided with a bevel gear 34 via an output shaft. Is provided with a drive sprocket 35, a chain 36 is hung between these sprockets 32, 35, and the swivel plate 21 is swivel-driven from an upper swivel position (one roll suspension) to a lower swivel position. The load applied to the swivel plate 21 from the roll 10 side is received by the pivot portion of the swivel plate 21, and does not affect the chain 36 or the rotation motor 33 side. In this embodiment, since the swivel plate 21 swivels along the suspension arm 8, there are few lateral projections of the swivel plate 21 in the case of hanging one roll by the eye end portion 20, which is safe workability. It is advantageous.

In the embodiment of FIGS. 1 to 5, the swivel plate 21 is configured to project toward the suspension arm on the opposite side (not shown). However, the swivel plate 21 is swung in the opposite direction, that is, to the outer surface side of the arm 8. You may comprise. In this case, the motor cylinder 27 is attached to the outer surface side of the suspension arm 8.

Next, an example of a roll lifter using the roll hanger according to the present invention will be briefly described. Referring to FIG. 8, the lifter main body frame 6 is suspended by a pair of wire ropes 19 from an upper crane (not shown), and a pair of arm carriages 9 and 9 a are mounted on the main body frame 6 along the longitudinal direction of the frame 6. It is mounted so that it can be moved. The arm carriages 9 and 9a are moved by, for example, a screw (not shown) provided on the main body frame 6 and a drive device thereof so that the left and right carriages are interlocked with each other or moved separately. Suspending arms 8 and 8a extending downward are fixed to the arm carriages 9 and 9a, and the lower end of the suspending arms 8 and 8a is provided with the eye end portion 20 as described above and has a roll insertion hole. A swivel plate 21 and a motor cylinder 27 are provided. When one large-diameter roll 37 is suspended by this roll lifter, the swivel plate 21 is swung upward to move the suspension arms 8 and 8a toward each other, and the roll 37 is attached to each of the eye end portions 20. Insert the shaft end. In the case of hanging two rolls, each swivel plate 21 is swung downward, and the rolls are respectively inserted into the roll insertion holes of the swivel plate 21 and the suspension space in the eye end portion below the swivel plate 21 and lifted. In this way, when the swivel plate 21 is raised upward, the suspension space in the eye end portion becomes large, and therefore one roll having a large diameter can be suspended accordingly.

[0016]

[Effect of device]

 As described above, according to the present invention, one eye end portion is formed at the lower end of the suspension arm, and a swivel plate having a roll insertion hole is pivotally attached to the suspension arm so as to move in and out of the eye end portion. Therefore, it is possible to suspend two rolls at the same time without reducing the strength of the suspension arm, thus improving work efficiency. Since the load applied to the swivel plate is received by the pivotal portion of the swivel plate and does not affect the drive part of the swivel plate, the drive part needs only a capacity to swivel the swivel plate, and is small and lightweight. Can be configured. When the swivel plate is raised upwards, one large-diameter roll can be suspended by the eye end of the suspension arm, which has a wide range of applications from small diameters to large diameter rolls, and has few failures. The ingredients are obtained.

[Brief description of drawings]

FIG. 1 is a partial front view of a roll hanger according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the embodiment shown in FIG.

FIG. 3 is a front view showing a collision state between a roll and a suspension arm during suspension in the case of suspending one roll in the embodiment shown in FIG.

FIG. 4 is a partial front view of a roll hanger according to another embodiment of the present invention.

5 is a side sectional view of the embodiment shown in FIG.

FIG. 6 is a partial front view of a roll hanger according to still another embodiment of the present invention.

FIG. 7 is a side sectional view of the embodiment shown in FIG.

FIG. 8 is a schematic front view of a roll lifter using a roll hanger according to the present invention.

[Explanation of symbols]

 8 Suspension Arm 10, 30 Roll 20 Eye End 21 Swiveling Plate 22 Roll Insertion Hole 25 Pivot Pin 26 Stopper 27 Motor Cylinder 28 Piston Rod 33 Rotation Motor 36 Chain 37 Large Diameter Roll

Claims (2)

[Scope of utility model registration request] 1. A vertical suspension arm having an eye end portion formed at a lower end thereof, and a swivel plate having a roll insertion hole pivotably supported by an upper portion of the eye end portion and capable of moving in and out of the eye end portion. And a drive device that is held by the suspension arm and that causes the swivel plate to swivel, and when the roll insertion hole enters the eye end portion, a space for suspending the roll is provided below the eye end portion. A hanging tool for rolls characterized by the above. 2. The hanger for rolls according to claim 1, wherein the load of the roll suspended in the roll insertion hole of the swivel plate is carried by the shaft support of the swivel plate.