JP2007308279A - Coil lifter turning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance work efficiency and safety by adding a means for automatically stopping a coil lifter after turning it by 90°/180° in a turning device for turning the coil lifter with a coil lifted. <P>SOLUTION: The coil lifter turning device has dogs 39a-39d provided at 90° intervals at a fixed gear 14 of a hanging accessory, and a limit switch 38 provided at a body 20. In a reference position, the dog 39d is aligned with the limit switch, and when the body is turned by 90° with respect to a hanging part from the reference position, the dogs 39a, 39c adjacent to the dog 39d are aligned with the limit switch. When turned by 180° from the reference position, the dog 39b facing the dog 39d is aligned with the limit switch. When the 90° turned position or 180° turned position is detected, a control means automatically stops the coil lifter in the 90° turned position or 180° turned position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a coil lifter that lifts a coil of a thin metal sheet such as a rolled thin steel sheet by inserting and engaging a claw into the inner diameter space of the coil, and more particularly, turning for turning the coil lifter in a state where the coil is lifted Relates to the device.

As is known, for example, in Patent Documents 1 and 2 below, the coil lifter is connected so that a pair of vertical arms can be opened and closed in the horizontal direction with respect to the main body, and the pair of vertical arms are moved relative to each other in the direction of approaching each other. Thus, a configuration is adopted in which a claw protruding inwardly from the lower end of each vertical arm is inserted and locked in the inner diameter space of the coil, and this state is maintained to lift the coil.
Japanese Patent No. 2611060 Japanese Patent No. 3703213

  One typical use of a coil lifter is to unload a coil that has been delivered to a warehouse or the like by a truck from a truck bed. In this case, as described above, the claw of the coil lifter is lifted by a crane or the like in a state where it is inserted and locked in the inner diameter space of the coil, suspended from the truck bed, and stored side by side in a predetermined direction in a warehouse. At this time, depending on the direction of the track and the direction of the coil stored in the warehouse, it is necessary to turn the coil lifter while the coil is lifted.

  In order to meet such a demand, the conventional coil lifter is provided with a turning device that can rotate the suspension portion that locks the crane hook with respect to the main body (for example, shown by reference numeral 32 in FIG. 1 of Patent Document 1). ) As the swivel device, for example, a gear is integrally fixed to the lower end of the suspension part, and a pinion gear that meshes with the fixed gear is provided in the main body, and the suspension is swung by driving and rotating the pinion gear with a motor with a reduction gear. The structure to let it be adopted is adopted.

  By the way, when a coil is loaded on a truck bed, loaded into a warehouse, etc. and suspended, the coil is lifted by a coil lifter just 90 degrees in relation to the direction of the coil to be stored in the warehouse and the warehouse. In many cases, it is necessary to turn, but the conventional turning device does not include means for detecting 90-degree turning and automatically stopping the turning. For this reason, it has been necessary for the crane operator and ground workers to visually check the 90-degree turn and stop the turn, and the work efficiency is poor, leading to an accident.

  The swivel device is ideally configured to be able to swivel 180 degrees left and right around the front center of the coil lifter. However, as will be described later, due to the arrangement of dogs and limit switches, etc. In practice, a configuration is adopted in which the vehicle can turn about 150 degrees to the left and right. For this reason, when the coil has to be turned 180 degrees after being lifted by the coil lifter, it has not been possible to respond efficiently and safely to the request.

  Accordingly, an object of the present invention is to satisfy various needs in turning a coil lifter in a turning device capable of turning a coil lifter while the coil is lifted.

  More specifically, one object of the present invention is to provide a turning device for turning a coil lifter in a state where the coil is lifted, and by adding means for automatically stopping when the coil lifter is turned 90 degrees, It is to increase safety.

  Another object of the present invention is to improve working efficiency and safety by adding means for automatically stopping the coil lifter when the coil lifter is turned 180 degrees in a turning device for turning the coil lifter while the coil is lifted. It is in.

  In order to solve the above-mentioned problem, the present invention according to claim 1 is a suspension part that locks the crane hook, a main body that is pivotably connected to the suspension part, and a horizontal opening / closing with respect to the main body. In a coil lifter that includes a pair of arms and lifts the coil in a state where the claw at the tip of the closed arm is inserted and locked in the inner diameter space of the coil, Position detection means for detecting that the main body has turned 90 degrees from the reference position relative to the suspension section when the position is at a predetermined position with respect to the suspension section, and when the position detection means has detected 90-degree rotation Control means for automatically stopping at a 90-degree turning position based on a detection signal sent from the position detection means.

  The present invention according to claim 2 includes a hanging portion that locks the crane hook, a main body that is pivotably connected to the hanging portion, and a pair of arms that can be opened and closed horizontally with respect to the main body, In the coil lifter that lifts the coil with the claw at the tip of the closed arm inserted and locked in the inner diameter space of the coil, the turning device that can turn the main body with respect to the hanging portion has a predetermined position with respect to the hanging portion. And a first turning position detecting means for detecting that the main body has turned 90 degrees with respect to the hanging portion from the reference position, and the main body has turned 180 degrees with respect to the hanging portion from the reference position. When the second turning position detecting means detects the turning of 90 degrees, or when the second turning position detecting means detects the turning of 180 degrees, Sent from the second position detection means Control means for automatically stopping at 90 ° pivoted position or 180 degrees turning position based on the detection signal, characterized in that it comprises a.

  According to a third aspect of the present invention, in the coil lifter turning device according to the second aspect, the first and second turning position detecting means are provided at intervals of 90 degrees on either the suspension or the main body. Or a fourth dog and a single limit switch provided on the other of the hanger or the body, the first dog being aligned with the limit switch when in the reference position, from which the body is The second or third dog adjacent to the first dog is aligned with the limit switch when turned 90 degrees with respect to the suspension, and the first when the body is turned 180 degrees with respect to the suspension from the reference position. A fourth dog facing one dog is aligned with the limit switch.

  According to a fourth aspect of the present invention, in the coil lifter turning device according to any one of the first to third aspects, a turning direction confirmation means for indicating a turning direction from the reference position is provided.

  According to a fifth aspect of the present invention, in the coil lifter turning device according to any one of the first to fourth aspects, provided is a turning position confirmation means for indicating a 90 degree turning position and a 180 degree turning position from the reference position. It is characterized by.

  The present invention according to claim 6 includes a hanging portion that locks the crane hook, a main body that is pivotally connected to the hanging portion, and a pair of arms that can be opened and closed horizontally with respect to the main body, In the coil lifter that lifts the coil with the claw at the tip of the closed arm inserted and locked in the inner diameter space of the coil, a swiveling device that is used to turn the main body with respect to the hanging portion is integrated with the hanging portion. A certain rotary body is provided with a limit position indicator indicating a turning limit position at a predetermined position at a first predetermined radial distance L1 from the center of rotation, and at a second predetermined radial distance L2 (L1 ≠ L2). 90 degree interval position indicators are provided at intervals of 90 degrees, and the main body has a reference position when the main body is in a predetermined position with respect to the suspension portion in cooperation with the limit position indicator. An extreme position detection limit switch is provided to detect that the vehicle has turned to the limit in one direction or both directions, and the main body has turned 90 ° or 180 ° in the horizontal direction from the reference position by cooperating with the 90 ° interval position indicator. A 90-degree interval position detection limit switch for detection is provided.

  According to a seventh aspect of the present invention, in the coil lifter turning device according to the sixth aspect of the present invention, a plurality of mounting holes for attaching the limit position indicator to the rotating body integrated with the suspension portion are provided at different positions, and the limit position indicator is the first. Indicates the turning limit position when the main body is turned by an angle α (90 ° <α ≦ 180 °) in the left and right directions from the reference position, and when attached to the second mounting hole, It shows a turning limit position when the main body turns by an angle β (180 degrees <β <360 degrees) in either one of the left and right directions from the reference position.

  According to the first aspect of the present invention, the coil lifter is controlled to automatically stop at the position when the coil lifter is turned 90 degrees in the left or right direction from the reference position. Thus, it is not necessary to perform an operation of confirming the 90-degree turn and stopping the turn, so that work efficiency and safety are improved.

  According to the present invention of claim 2, when the coil lifter is turned 90 degrees in the left or right direction from the reference position, and when it is turned 180 degrees, it is controlled to automatically stop at these positions. There is no need for the crane operator or ground worker to visually check the 90-degree turn or the 180-degree turn and stop the turn, thereby improving work efficiency and safety.

  According to the third aspect of the present invention, the 90-degree turning position and the 180-degree turning are achieved by one limit switch provided on either the suspension part or the main body and four dogs provided on the other side at intervals of 90 degrees. The position can be detected and automatically stopped at the position.

  According to the fourth aspect of the present invention, since the turning direction from the reference position can be easily confirmed from a distance, the coil lifting operation can be performed more safely and reliably.

  According to the fifth aspect of the present invention, since the 90-degree turning position and the 180-degree turning position from the reference position can be easily confirmed from a distance, the coil lifting operation can be performed more safely and reliably. it can.

  According to the sixth aspect of the present invention, in addition to means for detecting that the main body has turned to the limit with respect to the suspension portion, means for detecting turning positions at intervals of 90 degrees at positions that do not interfere with the means. When these positions are detected, control is performed to automatically stop at these positions, so that crane operators and ground workers can turn 90/180 degrees visually without changing the conventional configuration. This eliminates the need to confirm and perform a turning stop operation, thereby improving work efficiency and safety.

  According to the seventh aspect of the present invention, when the turning limit position of the coil lifter is made variable and the limit position indicator is attached to the second mounting hole, turning by 180 degrees is allowed. And the effectiveness of automatic stopping when turning 180 degrees is exhibited.

  1 to 3 show a coil lifter 10 according to an embodiment of the present invention. The coil lifter 10 includes a hanging part 11 that locks the crane hook 1 and a main body 20 that is pivotally connected to the hanging part 11.

  The hanging portion 11 has a horizontal shaft 13 spanned between a pair of vertical plates 12 and 12, and the crane hook 1 can be locked to the horizontal shaft 13. A fixed gear 14 is fixed to the lower ends of the pair of vertical plates 12, 12. Most of the fixed gear 14 is covered with a gear cover 21 attached to the upper end of the main body 20, and a part of the fixed gear 14 is slightly covered with the coil lifter 10. It is only exposed behind (see FIG. 3). The fixed gear 14 is integral with the rotary shaft 16 via the boss 15.

  The main body 20 has a housing 22 to which the gear cover 21 is fixed. A screw 22 is accommodated in the housing 22. The screw screw 23 is coaxial with the rotating shaft 16 of the fixed gear 14 and is connected to the rotating shaft 16 so as to be relatively rotatable with each other. That is, the rotating shaft 16 passes through the center hole (not shown) of the upper end member 46 fixed to the upper end of the housing 22 and receives the upper end of the screw screw 23 in the ring member 17 fixed to the lower end thereof. Reference numeral 47 is a bearing for allowing the rotating shaft 16 integrated therewith to rotate relative to the main body 20 when the fixed gear 14 is rotated by a motor 33, a reduction gear 34 and a pinion gear 35 which will be described later. Reference numeral 48 denotes a bearing for allowing the suspension portion 12 including the rotary shaft 16 to rotate the screw screw 23 by a motor and a reduction gear in the first motor box 31 described later.

  Further, a female screw portion 25 that meshes with the screw screw 23 is accommodated in the middle portion of the housing 22 so as to be movable up and down in the housing 22, and the female screw portion 25 has a pair of first links 26 and 26 and a pair of first links. The two links 27 and 27 are rotatably connected to each other by a pivot (not indicated). Arms 28, 28 are connected to the tips of the first links 26, 26 and the second links 27, 27, and claws 29, 29 projecting inwardly are provided at the tips of the arms 28, 28 so as to be retractable. Yes. The second links 27 and 27 are connected to the lower end portion of the housing 22 via auxiliary links 30 and 30 at intermediate points, whereby the arms 28 and 28 are always held substantially vertically.

  A first motor box 31 provided on the outer periphery of the lower end of the housing 22 houses a forward / reverse rotation motor for arm opening / closing and a speed reducer (not shown). When rotated at a speed, the female screw portion 25 moves up and down in the housing 22, and the arms 28, 28 move horizontally through the first links 26, 26 and the second links 27, 27 that open and close in conjunction therewith. That is, when the arms 28 and 28 are in the open position (the position indicated by the solid line in FIG. 1), the arms 28 and 28 are completely closed by driving the motor in a direction to raise the female screw portion 25 in the housing 22. Moving toward each other toward the position (the position indicated by the phantom line in FIG. 1), the distance between the arms is gradually reduced. Since this arm opening / closing operation is the same as in the prior art, a detailed description is omitted.

  A second motor box 32 provided on the outer periphery of the upper end of the housing 22 accommodates a forward / reverse rotation motor 33 for turning driving, and a pinion gear 35 connected to the output of the motor 33 via a speed reducer 34, It meshes with the fixed gear 14 of the hanging portion 11. Therefore, for example, even when the claws 29 and 29 are inserted and locked into the inner diameter space of the coil by closing the arms 28 and 28 and the coil is lifted, the motor 33 is driven in a predetermined direction to The main body 20 can be swung in a predetermined direction with respect to the hanging portion 11 while the hanging portion 11 that holds the hook 1 is held substantially immovable.

  In the configuration described above, the main body 20 is turnable with respect to the hanging portion 11, and the turning device for this is constituted by the fixed gear 14, the motor 33, the speed reducer 34, the pinion gear 35, and the like. .

  The details of the swivel device will be further described with reference to FIGS. In FIG. 4B, the gear cover 21 is not shown.

  In the configuration of FIG. 4, a pair of limit switches 36 (a right-turn limit switch 36 a and a left-turn limit switch 36 b) are arranged at a predetermined angle centered on the front center F (in this embodiment, the front face). The upper and lower limit switches 36a and 36b are fixed when they are fixed upward at positions separated from the center F by about 15 degrees (total of about 30 degrees). A pair of dogs 37 (a right turning dog 37a and a left turning dog 37b) are fixed downward to the fixed gear 14 so as to substantially face each other. The pair of limit switches 36a, 36b and the pair of dogs 37a, 37b are substantially concentric with respect to the main shaft 23a. The center of the main body 20 in FIG. 1 which is a front view is a front center F, and the center of the main body 20 in FIG.

  Here, the right or left turning direction means the turning direction of the main body 20 when looking up from the ground while holding the coil between the closed arms 28 and 28 of the main body 20 and lifting it. Therefore, in the plan view, when the main body 20 rotates in the clockwise direction with respect to the hanging portion 11, it turns left, and when it rotates in the counterclockwise direction, it turns right.

  According to the configuration shown in FIG. 4, the pinion gear 35 (FIG. 3) that meshes with the fixed gear 14 is driven by the motor 33, so that the main body 20 turns in the left or right direction with respect to the hanging portion 11. In the case of a right turn, when turning right about 150 degrees from the center position, the right turn dog 37a becomes a position directly above the right turn limit switch 36a, and the limit switch 36a is operated, The motor 33 is stopped via a control means (not shown) in the fixed control box 38, so that the right turn of the main body 20 is stopped and held at the same position. Similarly, in the case of left turn, when turning left about 150 degrees from the center position, the left turn dog 37b becomes a position immediately above the left turn limit switch 36b, and the limit switch 36b is operated. 33 is stopped, so that the left turn of the main body 20 is stopped and held at the same position.

  In this configuration, in order to prevent interference and malfunction of the limit switches 36a and 36b and the dogs 37a and 37b, it is necessary to arrange them with a certain angle range therebetween. In this embodiment, as described above Further, the turning angle is limited to about 150 degrees on each of the left and right sides, and the main body 20 cannot be turned 180 degrees.

  The coil 2 is conveyed in a state where it is loaded on a track or the like in either of the winding directions shown in FIG. 7 (a) or (b). When it is necessary to pull it out and insert it into the processing machine, if it is conveyed in the state shown in FIG. 5A, the direction must be changed to the state shown in FIG. That is, it is necessary to turn the coil 2 conveyed in the state of FIG. The configuration shown in FIG. 4 cannot meet such a request.

  In the other configuration of the turning device shown in FIG. 5, the limit switch 36 is provided with a right turn limit switch 36a and a left turn limit switch 36b on the front center side of the front end F as in the case of the configuration in FIG. 4 is fixed upward at positions separated from each other by a predetermined angle (15 degrees from the front center F in this embodiment, 30 degrees in total in this embodiment), but the position of the dog is different from the configuration of FIG. That is, the right turn dog 37a is located at a predetermined angle (about 15 degrees each, about 30 degrees in total) about the side surface center S when the hanging tool 11 is at the reference position (FIG. 1) with respect to the main body 20. 'And a left turning dog 37b' are fixed to the fixed gear 14 downward.

  According to this configuration, when the main body 20 turns counterclockwise with respect to the hanging portion 11 by driving the pinion gear 35 (FIG. 3) engaged with the fixed gear 14 by the motor 33, the rotation of the main body 20 exceeds about 180 degrees and about 240 degrees. At the time of turning, the left turning dog 37b ′ is positioned immediately above the left turning limit switch 36b, the limit switch 36b is operated, and the motor 33 is stopped via the control means. Stop the rotation and hold it in the same position. Therefore, the main body 20 can be turned 180 degrees from the center position. In this configuration, the right turn limit switch 36a and the right turn dog 37a 'are provided. However, in actuality, it is not necessary to turn right. The switch 36a and the dog 37a ′ may be omitted, and it is sufficient if the motor 33 is also rotated in one direction for turning left.

  Reference numerals 40a and 40b in FIG. 5 are dog position changing mounting holes provided in the fixed gear 14. If the dogs 37a 'and 37b' are mounted in the mounting holes 40a and 40b, the same turning as in the configuration of FIG. It becomes a device. That is, a pair of mounting holes (40a and 40b in FIG. 5) for mounting the dogs 37a and 37b at the position of FIG. 4 and a pair of mounting holes (FIG. 6) for mounting the dogs 37a ′ and 37b ′ at the position of FIG. 41a and 41b) are provided in advance on the fixed gear 14 at intervals of 90 degrees, and the dog shown in FIG. 4 (150 degree left-right swivel type) and the structure of FIG. Left-turning type).

  6, another limit switch 36a, 36b and dog 37a, 37b are installed at predetermined positions, and the main body 20 is about 150 in either direction from the front center to the left or right. The main body 20 is automatically stopped by the action of the limit switches 36a and 36b when it is turned, or the main body 20 is mounted in the same manner as in FIG. 5 by attaching these dogs 37a and 37b to the other mounting holes 41a and 41b. In addition to automatically stopping the main body 20 by the action of the limit switch 36b that detects the position of the dog 37b 'when turning left by 240 degrees from the front center, it is also automatic when turning 90 degrees (and 180 degrees). In order to stop, a limit switch 38 is installed at an appropriate position on the outer periphery of the upper end of the main body 20, and the limit switch 38 is installed. Depending on the position of switch 38 is obtained by installing four dogs 39a~39d the fixed gear 14 lower surface at intervals of 90 degrees.

  The positional relationship between the limit switch 38 and the dogs 39a to 39d in this configuration is any one of the dogs 39a to 39d when they are all in a substantially concentric position from the rotation center (main shaft 23a) and at the reference position (FIG. 1). Must be in a position aligned with the limit switch 38 in the axial direction (a position immediately above the limit switch 38). In FIG. 6, the limit switch 38 is installed on the side center S and the dogs 39a to 39d are placed in the front center. F and four sides on the side center S (the dog 39d is aligned with the limit switch 38 in the axial direction at the reference position), but the limit switch 38 is on the front center F (for example, the dog 39c in FIG. 6). And a position aligned in the axial direction).

  As described above in relation to the prior art, when a coil is loaded on a truck bed, loaded into a warehouse, etc., and suspended, the coil is related to the direction of the coil entrance to be stored in the warehouse and the coil. May need to be turned 90 degrees after being lifted by the coil lifter 10. For example, when the truck loaded with the coils 2 arranged side by side on the loading platform 4 enters the warehouse in the traveling direction of FIG. 8 (a) and when entering the warehouse in the traveling direction of FIG. Is 90 degrees, the coil lifter 10 is used when the direction in which the coil 2 transported by the truck 3 in FIG. 5A is to be stored in the warehouse is perpendicular to the traveling direction of the truck 3. A 90 degree turn is required when hanging. However, since the turning mechanism shown in FIG. 4 or FIG. 5 does not have means for detecting 90-degree turning and automatically stopping it, the crane operator or the ground worker visually checks the 90-degree turning and stops turning. It was necessary to do.

  In FIG. 6, the dogs 37 a and 37 b are attached to the attachment holes 40 a and 40 b and operate as a right and left 150 degree turnable type similar to FIG. 4, but in this case, the main body 20 is moved from the front center F. When the dog 39c is turned to the left by 90 degrees, the dog 39c is aligned immediately above the limit switch 38. Therefore, the detection signal is sent to the control means (not shown) in the control box 38 from the limit switch 38 that detects this, and the motor 33 is stopped. The left turn of is stopped and held in the same position. Further, when the main body 20 turns 90 degrees from the front center F to the right, the dog 39a is aligned immediately above the limit switch 38. Similarly, the limit switch 38 that detects this is connected to a control means (not shown) in the control box 38. A detection signal is sent to stop the motor 33, so that the right turn of the main body 20 is stopped and held at the same position. Therefore, it is possible to reliably and safely meet the request for the 90-degree turning automatic stop as described with reference to FIG.

  In addition, when the dogs 37a and 37b are attached to the other mounting holes 41a and 41b in the configuration of FIG. 6 and the unidirectional (leftward) 240 degree swivel type as in FIG. When the dog 39c is turned to the left by 90 degrees, the dog 39c is aligned immediately above the limit switch 38. Therefore, the detection signal is sent to the control means (not shown) in the control box 38 from the limit switch 38 that detects this, and the motor 33 is stopped. The left turn of is stopped and held in the same position. Therefore, in this case as well, the request for the 90-degree turning automatic stop as described with reference to FIG. 8 can be reliably and safely met.

  Further, when the main body 20 turns 180 degrees to the left from the front center F, the dog 39b is aligned right above the limit switch 38, so that a detection signal is sent from the limit switch 38 that detects this to a control means (not shown) in the control box 38. Thus, the motor 33 is stopped, and the left turn of the main body 20 is stopped and held at the same position. Therefore, according to the configuration of FIG. 6, it is possible to reliably and safely respond to the request for the 180-degree automatic turning stop as described with reference to FIG.

  Further, the arrangement of the limit switch 28 and the dogs 39a to 39d is not limited to the above-described turning device that detects the right and left 150 ° turning position or the one-way 240 ° turning position, but can be applied to any type of turning device. Is also applicable. For example, even in a swivel device that allows the main body 20 to freely swivel 360 degrees with respect to the suspension part 11, by arranging the limit switch 28 and the dogs 39a to 39d as shown in FIG. The turning position can be detected and automatically stopped.

  The limit switches 36a and 36b and the dogs 37a, 37b, 37a ′ and 37b ′ are arranged concentrically from the rotation center (main shaft 23a), and the limit switch 28 and the dogs 39a to 39d are also arranged concentrically. In order to prevent malfunctions of detection of the limit position of turning by the limit switches 36a and 36b and detection of the turning position of 90/180 degrees by the limit switch 38, they are arranged at different concentric positions. In FIG. 6, the limit switch 28 and the dogs 39a to 39d are arranged inside the limit switches 36a and 36b and the dogs 37a, 37b, 37a ', and 37b'.

  Since the coil lifter 10 suspended on the crane hook 1 performs operations such as turning and transporting at a position considerably higher than the floor surface, the crane operator can change the arm opening / closing state and turning state of the coil lifter 10 from a distance. But you need to be able to confirm it easily and reliably. Therefore, in the embodiment shown in FIGS. 1 and 2, a plurality of display lamps for displaying each process (state) are provided on the outer surface of the control box 38 and the motor box 32 installed on the opposing surface of the main body housing 22. (See FIG. 9 in addition to FIGS. 1 and 2).

  Further, by attaching a right turning direction identification tape 42 and a left turning direction identification tape 43 to the gear cover 21 at the upper end of the main body 20, the crane operator can easily confirm the turning direction of the coil lifter 10, and the hanging portion The 90-degree turning position and the 180-degree turning position of the coil lifter 10 can be easily confirmed by the turning position confirmation arrow 44 provided at 11 and the marks 45a to 45d provided at predetermined positions between the tapes.

  That is, as shown in FIG. 10, the right turning direction identification tape 42 and the left turning direction identification tape 43 are pasted with a slight gap on the front center F at the front and the rear, thereby forming the gaps as marks 45 a and 45 c. Further, in each of the right turn direction identification tape 42 and the left turn direction identification tape 43, a slight gap is given to the region on the side surface center S, and these gaps are designated as marks 45b and 45d. When the coil lifter 10 is in the reference position shown in FIGS. 1 and 9, the arrow 44 indicates the mark 45a. However, when the coil lifter 10 turns 90 degrees to the left from this position, the mark 45b is indicated by the arrow 44. The mark 45b is a mark for confirming the 90 degree left turn position (common to the 150 degree left and right turn type and 240 degree left turn type). Further, when turning 90 degrees to the right from the reference position, the mark 45d is indicated by an arrow 44. Therefore, the mark 45d serves as a mark for checking the 90-degree right turning position (effective in the 150-degree left-right turning type). Further, when turning 180 degrees in any direction from the reference position, the mark 45c is indicated by an arrow 44. Therefore, the mark 45c serves as a mark for confirming the 180-degree turning position (effective in the 240-degree left turn type). .

  In order to confirm the turning direction more surely and easily, it is preferable that the right turning direction identification tape 42 and the left turning direction identification tape 43 are easily identified by changing colors. Further, instead of sticking a tape, the outer surface of the gear cover 21 may be directly painted, etc., as left and right turning direction identifying means. In addition, the 90-degree turning position confirmation marks 45b and 45d provided at the intermediate position of the left-right turning direction identification tape may be configured as gaps, or may be configured by applying a different color tape or painting another color. good.

  In the embodiment described above, the present invention is applied to the type of coil lifter 10 that transmits the rotation of the screw 23 to the links 26 and 27 to open and close the arms 28 and 28 in parallel. Is not limited to this, and can be applied to all types of coil lifters. For example, the coil lifter 50 shown in FIG. 11 has a pair of arms 51 and 51 (which may be substantially the same as the arms 28 and 28 in the coil lifter 10 described above) as a main body by a rack and pinion system (not shown). 52 is a type that is opened and closed between an open leg state (solid line) and a closed leg state (virtual line) (known in Patent Documents 1 and 2, etc.). The above-described features of the present invention can be employed in the turning device 54 that can turn the main body 52 with respect to the suspension portion 11 (which may be substantially the same as the suspension portion 11 in the coil lifter 10 described above).

It is a front view of the coil lifter incorporating the turning apparatus by one Embodiment of this invention. It is a side view of this coil lifter. It is the elements on larger scale which looked at the upper part (part containing a turning device) of this coil lifter from the same side as FIG. It is the top view (a) and side view (b) which show the structural example of a turning apparatus. It is a top view which shows another structural example of a turning apparatus. It is a top view which shows another structural example of a turning apparatus. It is a figure explaining the necessity to turn a coil 180 degree | times. It is a figure explaining the necessity to turn a coil 90 degree | times. It is an upper part enlarged front view of the coil lifter of FIG. It is explanatory drawing which shows the positional relationship of the arrow for turning position confirmation, and the mark for turning position confirmation between the right-and-left turning direction identification tape. It is a front view which shows the other structural example of the coil lifter which can apply the turning apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crane hook 2 Coil 3 Track 4 Truck carrier 10 Coil lifter 11 Lifting part 14 Fixed gear 20 Main body 21 Gear cover 22 Housing 23 Screw 26,27,30 Link 28 Arm 29 Claw 33 Motor 34 Reduction gear 35 Pinion gear 36a, 36b Limit switch 37a, 37b, 37a ', 37b' Dog 38 Limit switch 39a-39d Dog 40a, 40b, 41a, 41b Dog mounting hole 50 Coil lifter 51 Arm 52 Main body 53 Suspension part 54 Swivel device

Claims (7)

A suspension part that locks the crane hook, a main body that is pivotally connected to the suspension part, and a pair of arms that can be opened and closed in a horizontal direction with respect to the main body. In a coil lifter that lifts a coil in a state where it is inserted and locked in the inner diameter space of the swivel device, the swiveling device is used to turn the main body with respect to the hanging portion, and the main body is in a predetermined position with respect to the hanging portion. Based on a detection signal sent from the position detection means when the position detection means detects a 90-degree turn from the reference position. And a control means for automatically stopping at a 90-degree turning position. A suspension part that locks the crane hook, a main body that is pivotally connected to the suspension part, and a pair of arms that can be opened and closed in a horizontal direction with respect to the main body. In a coil lifter that lifts a coil in a state where it is inserted and locked in the inner diameter space of the swivel device, the swiveling device is used to turn the main body with respect to the hanging portion, and the main body is in a predetermined position with respect to the hanging portion. And a first turning position detecting means for detecting that the main body has turned 90 degrees with respect to the hanging portion from the reference position, and detecting that the main body has turned 180 degrees with respect to the hanging portion from the reference position. The first or second position when the second turning position detecting means and the first turning position detecting means detect a 90 degree turn, or when the second turning position detecting means detects a 180 degree turn. Sent from the detection means Swivel coil lifter, characterized in that it comprises a control means for automatically stopping at 90 ° pivoted position or 180 degrees turning position based on the detection signal. The first and second swivel position detecting means include first to fourth dogs provided at either 90 ° intervals on either the hanger or the main body, and a single limit switch provided on the other side of the hanger or the main body. The first dog is aligned with the limit switch when in the reference position, and the second or adjacent to the first dog when the body pivots 90 degrees relative to the suspension from the reference position A third dog is aligned with the limit switch, and a fourth dog facing the first dog is aligned with the limit switch when the body is turned 180 degrees from the reference position with respect to the hanging portion. The swivel device for a coil lifter according to claim 2. The turning device for a coil lifter according to any one of claims 1 to 3, further comprising a turning direction confirmation means for indicating a turning direction from the reference position. 5. The turning apparatus for a coil lifter according to claim 1, further comprising turning position confirmation means for indicating a 90 degree turning position and a 180 degree turning position from the reference position. A suspension part that locks the crane hook, a main body that is pivotally connected to the suspension part, and a pair of arms that can be opened and closed in a horizontal direction with respect to the main body. In the coil lifter that lifts the coil in a state of being inserted and locked in the inner diameter space of the rotating device, the rotating device that is used to make the main body pivotable with respect to the hanging portion, An extreme position indicator indicating a turning limit position is provided at a predetermined position at a first predetermined radial distance L1 from the center of rotation, and 90 degrees at 90 ° intervals at a second predetermined radial distance L2 (L1 ≠ L2). An interval position indicator is provided, and the main body is in one direction or both directions from the reference position when the main body is in a predetermined position with respect to the hanging portion by cooperating with the limit position indicator. A limit position detection limit switch that detects turning to the limit is provided, and in cooperation with the 90 degree interval position indicator, 90 degree intervals that detect that the main body has turned 90 degrees or 180 degrees in the left-right direction from the reference position A swiveling device for a coil lifter, characterized in that a position detection limit switch is provided. A plurality of attachment holes for attaching the limit position indicator to the rotating body integrated with the suspension portion are provided at different positions, and when the limit position indicator is attached to the first attachment hole, the body is angled α ( 90 ° <α ≦ 180 °) Indicates the extreme turning position when turning, and when installed in the second mounting hole, the main body turns at an angle β (180 <β <360) in one of the left and right directions from the reference position. The swivel device for a coil lifter according to claim 6, wherein the swivel limit position is indicated.

Images