JP2005119767A - Hanging unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe hanging unit with excellent practical use, capable of preventing damage to an object to be conveyed. <P>SOLUTION: The hanging unit is provided with grip arms 14, 14A pivotably provided at both lower ends of a main frame 2 having a downwardly opened U shape or truncated chevron respectively; a pair of swing arms 5, 5A connected to an upper end of the main frame by each of grip arms 14, 14 and a roller chain 15; and a lifting hook pivotably connecting respective other ends 5C of the pair of swing arms 5, 5A. Pivoting motion of the grip arms 14, 14A is accomplished by lifting motion of the lifting hook 8 relative to the main frame 2 by the roller chain 15. Thereby, since a bobbin B, i.e., the object to be conveyed is hung up by the pair of pivoting grip arms 14, 14A, the object to be conveyed can be conveyed without injuring it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hanger used for lifting a to-be-conveyed object, in particular, a cylindrical bobbin around which various wires such as steel cords and ropes are wound.

  Conventionally, in order to lift a cylindrical bobbin wound with various steel cords, ropes, or other wire rods, a hanging tool suspended from a hook such as a crane has been used.

  Such a hanger has a pair of clamping plates below the hanger body, and a friction material such as felt is adhered to the arcuate inner surface formed on the clamping plate. In a state where a bobbin such as a cylindrical object, which is the object to be conveyed, is placed, the object to be conveyed is clamped by a pair of clamping plates and is conveyed by being lifted by a crane.

However, such a hanging tool, for example, when transporting a heavy bobbin or the like on which a wire such as a steel cord used for a ropeway is wound, the wire wound on the bobbin When the bobbin is lifted and transported with a strong force, the bobbin cannot be lifted unless the clamping plate is clamped with a force that exceeds the weight of the bobbin on which the wire is wound. . Moreover, when lifted by a crane or the like, a frictional force is generated between the wire and the sandwiching plate due to shaking or the like, and there is a concern that the wire wound on the bobbin may be damaged.
JP 7-324290 A

  The present invention solves the above-described problems, and since the lifting device can lift and hold the object to be conveyed by lifting it from below without holding the object to be conveyed such as a bobbin, the object to be conveyed is damaged. An object of the present invention is to provide a hanging device that can prevent the above-described problem and is safe and practical.

  The hanging tool of the invention of claim 1 is a U-shaped or C-shaped main frame that opens downward, and a grip arm that is swingably provided at both lower ends of the main frame. A pair of swing arms connected to each of the grip arms by a power transmission means, and a lifting hook connected to each other end of the pair of swing arms so as to be swingable, and the main frame of the lifting hook The grip arm swinging movement is achieved through the power transmission means by the lifting and lowering movement, and the conveyed object is lifted by the pair of swinging grip arms. As a result, the grip arm can be folded and the object to be conveyed can be held obliquely from the lower side in accordance with the elevating movement that simply lifts the elevating hook, so that the object to be conveyed can be conveyed without being damaged.

  In addition to the structure of Claim 1, the suspension tool of the invention of Claim 2 is provided with a pair of the main frames, so that a suspension tool having high strength and excellent durability can be provided.

  According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the power transmission means for achieving the lifting movement of the lifting hook as the swinging movement of the pair of grip arms is a roller chain. There is something. Thereby, even when the chain is consumed, maintenance and maintenance can be easily performed.

  According to a fourth aspect of the present invention, in addition to the structure according to one of the first to third aspects, when the lifting hook is in the raised position for lifting the object to be conveyed, A safety pin for fixing the relative position of the swing arm with respect to the frame is provided. Thereby, since the safety pin can lock the operation of the swing arm, it is safe because the interlocking operation of the hanger can be maintained and the conveyed object can be lifted in a stable state.

According to a fifth aspect of the present invention, in addition to the structure according to one of the first to fourth aspects of the present invention, the suspension tool is integrated with the lock plate that is biased by the biasing force of the elastic body. And the safety pin is inserted into the hole provided in the swing arm by the biasing force of the elastic body. The suspension device according to one of claims 1 to 4, wherein the suspension device has a structure. As a result, the safety pin moves and automatically locks the swing arm as the lifting tool is lifted, so that the transported object can be stably transported while the lifting tool lifts the transported object. Furthermore, by automatically locking the swing arm, the operator's work can be reduced, and it is safe and practical.

  According to a sixth aspect of the present invention, in addition to the structure of the first, second, or third aspect, the power transmission means that achieves the lifting movement of the lifting hook as the swinging movement of the pair of grip arms. Is a combination of multiple gears. As a result, a large lever ratio can be obtained by the multistage gear, so that a heavy transported object can be lifted.

  According to the first aspect of the present invention, a grip arm provided swingably at both lower ends of the U-shaped main frame or the C-shaped main frame that opens downward, and the grip at the upper end of the main frame. A pair of swing arms connected to each of the arms by power transmission means, and a lifting hook connected to each other end of the pair of swing arms so as to be swingable are provided, and the lifting hook is connected to the main frame. Since the grip arm swinging movement is achieved through the power transmission means by the lifting and lowering movement, the transferred object is lifted by the pair of swinging grip arms, so that the transferred object is not damaged. Can do.

  According to the invention of claim 2, in addition to the configuration of claim 1, since the main frame is provided in a pair, a suspension having excellent durability can be provided.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the power transmission means for achieving the lifting movement of the lifting hook as a swinging movement of the pair of grip arms is a roller chain. Is. Thereby, maintenance and maintenance can be easily performed.

  According to a fourth aspect of the present invention, in addition to the configuration according to one of the first to third aspects, the main frame has a structure in which the lifting / lowering hook is in a raised position for lifting the object to be conveyed. Since the safety pin for fixing the relative position of the swing arm with respect to is provided, it is safe because the conveyed object can be lifted in a stable state.

  According to the invention of claim 5, in addition to the configuration of one of claims 1 to 4, the lock plate that is biased by the biasing force of the elastic body, and the lock plate are integrally formed. The safety pin is formed by inserting a swing arm that is interlocked with the lifting of the lifting tool, and the safety pin is inserted into a hole provided in the swing arm by the biasing force of the elastic body. It is what. As a result, it is possible to provide a hanging tool that can be stably transported and is safe and practical.

  According to the invention of claim 6, in addition to the configuration of claim 1, claim 2 or claim 3, the power transmission means for achieving the lifting movement of the lifting hook as the swinging movement of the pair of grip arms is provided. Because it is a combination of multi-stage gears, it is highly versatile and practical.

  Embodiments will be described below with reference to the drawings.

  Hereinafter, an embodiment of the hanger according to the present invention will be described with reference to FIGS.

  In FIG. 1 showing a front view of a hanging tool in a state where a grip arm is closed, reference numeral 1 denotes a hanging tool capable of lifting an object to be conveyed B such as a wire rod. Reference numeral 2 denotes a main frame that constitutes a hanging tool. The main frame 2 is formed in a U-shape that is opposed to the front and rear and forms a pair and opens downward. The pair of main frames 2 are integrally formed through a swing arm shaft 3A and a grip arm shaft 3B having a circular cross section. Each main frame 2 is provided with a guide hole 4 into which a safety pin 30 formed on lock plates 29 and 29A described later is inserted.

  In addition, a pair of swing arms 5 and 5 </ b> A, which are linked in opposition to each other, are swingably provided on each swing arm shaft 3 </ b> A provided at the upper end portion of the main frame 2. A base end portion 6 formed on the swing arms 5 and 5A is pivotally supported on the swing arm shaft 3A.

  Each swing arm 5, 5 </ b> A has a first hole 7 formed below the central portion in the longitudinal direction of the swing arm 5, 5 </ b> A. These first holes 7 are configured so as to face the safety pin 30 described above when the lifting / lowering hook 8 is in the raised position for lifting the article B to be transported by the crane hook 9 such as a crane. Has been. On the other hand, a second hole 10 is provided at the upper part of the swing arms 5, 5 </ b> A so as to face the safety pin 30 with the grip arms 14, 14 </ b> A of the hanger 1 being opened.

  Further, a lifting hook 8 is connected to each other end portion 5C which is the tip of the pair of swing arms 5 and 5A. Each of the other end portions 5C is pivotally provided with a roller 11 so that the rollers 11 of the swing arms 5 and 5A move along a long hole 12 provided in an elevating hook 8 described later. Installed as possible.

  The lifting / lowering hook 8 has a triangular shape as a whole, and a shaft 13 for hooking a crane hook 9 is formed on the upper part. Further, as described above, the long hole 12 is provided in the horizontal direction below the lifting hook 8, and the roller 11 of each other end 5 </ b> C of the swing arms 5, 5 </ b> A is guided along the long hole 12. It is mounted so that it can move horizontally.

  A pair of swingable grip arms 14 and 14A are provided on the grip arm shaft 3B provided at both lower ends of the main frame 2, respectively. The pair of grip arms 14 and 14A and the pair of swing arms 5 and 5A transmit power from the swing arms 5 and 5A to the grip arms 14 and 14A by the lifting movement of the lifting hook 8 with respect to the main frame 2. The first chain wheel 16 formed at the base end of the grip arm 14 and the second chain wheel 17 formed at the base end of the swing arm 5 are linked via the power transmission unit. So that they are connected. The power transmission means in this embodiment uses the roller chain 15, but a rope or belt may be used instead of the power transmission means in place of the roller chain 15.

  Next, the safety device which comprises a hanging tool is demonstrated.

  The safety device includes at least an operation lever 21, a grip portion 24 that an operator operates with the operation lever, a horizontal shaft 26 that is interlocked by operation of the operation lever 21, a first arm 27 that is interlocked with the horizontal shaft 26, The link bar 41 interlocked with the first arm 27, the second arm 27A interlocked with the link bar, the second lock plate 29A interlocked with the second arm 27A, and the second lock plate 29A The safety pin 30 includes a first and second lock plates 29 and 29A and a spring 36 that connects the main frame.

  Then, the safety device 20 automatically moves the safety pins 30 of the lock plates 29 and 29A to the holes A provided in the swing arm by the biasing force of the spring 36 when the grip arm swings at the lifted position of the lifting hook. In addition, the operator of the hoist 1 operates the grip portion 24 manually to move the safety pin 30 and appropriately lock the swing movement of the grip arm. Is possible.

  The operation lever 21 is formed in a square shape, and a hollow cylindrical portion 22 is provided at the bent portion 21. The operation lever 21 is pivotally supported by a mounting portion 23 formed on the front side of the hanger 1 so that the cylindrical portion 22 can swing with respect to the main frame 2.

  A vertically long slot 25 is formed below the operation lever 21, and a horizontal shaft 26 that is interlocked by the operation of the control lever 21 is inserted into the slot 25.

  A first arm 27 is rotatably connected to both ends 26A of the horizontal shaft 26, respectively. An arm mounting hole 28 is formed at the upper end of the first arm 27, and each is pivotally supported by a protrusion 40 formed on the lock plate 29 by a bolt or the like.

  The first and second lock plates 29 and 29A are formed with a pair of safety pins 30 protruding from the inside of the main frame 2.

  These safety pins 30 are inserted into the respective guide holes 4 formed in the main frame 2, the lifting hooks are in the raised position for lifting the object to be conveyed, and the grip arms 14, 14A are at an angle of 40 degrees. The safety pin 30 is formed so as to be able to go in and out of the hole 7 formed in the swing arm 5 when being folded.

  On the other hand, when the grip arms 14 and 14A are opened in the vertical direction, the safety pin 30 is formed so as to be able to enter and exit the second hole 10 formed in the swing arm 5.

  Further, the second arm 27A provided on the back side of the hanger 1 can swing to a mounting portion 33 in which a hole portion 32 provided in a substantially central portion of the second arm 27A protrudes from the main frame 2. Installed on. Similarly to the configuration of the front side of the hanger 1, a protrusion 40 formed on the lock plate 29A is pivotally supported by a bolt or the like in the arm mounting hole 28 at the upper end of the second arm 27A. ing. Further, the first arm 27 and the second arm 27A are connected via a link bar 41 so as to be interlocked.

  The first lock plate 29 and the second lock plate 29A are attached to the main frame 2 in the same direction as the axial direction of the safety pin 30 via a spring 36 that is an elastic body.

  The operation of the hanger 1 of the present invention configured as described above will be described. As shown in FIG. 2, the bobbin B placed on the ground G below the hanger 1 is placed on the ground G to be held by the grip arms 14 and 14A. From this state, when the crane hook 9 is hung on the shaft 13 on the upper part of the lifting hook 8 and the lifting tool 1 is lifted by a crane (not shown), the lifting hook 8 gradually rises and extends along the elongated hole 12 of the lifting hook 8. The roller 11 of the swing arm 5 is gradually guided and moved toward the center of the long hole 12, and the swing arms 5 and 5A rise while swinging around the swing arm shaft 3A. As the swing arms 5 and 5A are raised, the second chain wheel (sprocket) 17 formed at the respective base ends of the swing arms 5 and 5A rotates and the second chain wheel (sprocket). The roller chain 15 driven by 17 rotates and power is transmitted to the first chain wheel (sprocket) 16 of the grip arm via the roller chain 15. The grip arms 14, 14 </ b> A formed integrally with the first chain wheel 16 rotate in the same direction as the rotation direction of the second chain wheel (sprocket) 17. As a result, the grip arm is folded inward from the vertical direction to an angle of 40 degrees, and holds the bobbin B from obliquely downward to upward.

  The safety pin 30 of the lock plate 29 urged in the axial direction of the safety pin by the urging force of the spring 36 is the swing arm 5 when the grip arms 14 and 14A are folded inward to an angle of 40 degrees. , 5A and the safety pin 30 are opposed to each other, so that the lock plates 29 and 29A are moved inward by the biasing force of the spring 36, and the safety pin 30 is inserted into the hole 7 of the swing arm 5. Inserted. Thereby, it can lock so that a series of interlocking operation | movement of the hanger 1 cannot be performed. Accordingly, since the operator does not have to manually perform the locking operation of the grip arms 14 and 14A, the labor of the operator can be reduced and the bobbin B can be held and moved in a stable state. Therefore, the operator can use the hanging tool 1 safely.

  When the bobbin B is lowered to the ground G at a desired position by the crane, in order to remove the bobbin B from the hanging tool 1, the grip arm 14 folded at an angle of 40 degrees is returned to the vertical direction. The operator pushes up the grip 24 of the operation lever 21. As a result, the operating lever 21 that has been pulled to the front is rotated with the cylindrical portion 22 attached to the attachment portion 23 of the main frame 2 as a fulcrum, and the first lever via the horizontal shaft 26 on the front side of the hanger 1. The arm 27 moves substantially horizontally outward from the hanger 1. Accordingly, the first lock plate 27 on the front side of the hanger 1 also follows and moves to move substantially horizontally, so that the safety pin 30 can be pulled out from the hole 7 of the swing arms 5 and 5A.

  On the other hand, the safety pin 30 formed on the second lock plate 29A on the back side of the hanger 1 is moved substantially horizontally by moving the link bar 41 to the front side of the hanger 1 in conjunction with the first arm. Since the second arm 27A is interlocked and rotated in the direction of the arrow shown in FIG. 4, the second lock plate 29A on the back side of the hanger 1 also follows and moves to the outside of the hanger 1. The safety pin 30 formed on the second lock plate 29A can be pulled out from the hole 7 of the swing arms 5 and 5A. Along with such a series of operations, the first and second lock plates 29, 29A move toward the outside of the hanger.

  That is, since the respective members are linked, by lifting the grip portion 24 of the operation lever 21, the respective members operate in conjunction with each other, and finally the safety pin 30 is pulled out from the hole 7 of the swing arms 5 and 5A. The folded grip arms 14, 14 A can be opened by the weights of the grip arms 14, 14 A and the lifting hook 8.

  Further, when lifting the lifting tool 1 with a crane or the like while it is empty, the grip arms 14 and 14A can be lifted at a vertical position. In this case, each safety pin 30 is inserted into the second hole 10.

  Since the rotation radius R to the swing arm action point is larger than the rotation radius R1 to the grip arm action point, the force A acting on the swing arm action point S acts on the grip arm action point S1. The value is smaller than the force B at a ratio of R1 / R.

  Further, in the hanging tool 1 in this embodiment, the lift arm 8, the swing arm 5, the roller chain 15, and the grip arm 14 are interlocked in this order, and the grip arm 14 is finally folded. Also, when opening the grip arm, it is interlocked in the reverse order.

  As described above, the hanger 1 includes the grip arms 14 and 14A that are swingably provided at the lower ends of the U-shaped main frame 2 that opens downward, and the main frame 2. The pair of swing arms 5, 5A connected to the upper end of each of the grip arms 14, 14A by a roller chain 15 as power transmission means, and the other ends 5C of the pair of swing arms 5, 5A are swung. A lifting hook 8 that is movably connected is provided, and the swinging movement of the grip arms 14, 14 </ b> A is achieved through the roller chain 15 as power transmission means by the lifting movement of the lifting hook 8 with respect to the main frame 2. Since the bobbin B, which is the object to be conveyed, is lifted by the pair of swinging grip arms 14 and 14A, the lifting hook 8 is simply lifted. With the descending movement, folding the grip arms 14, 14A, it is possible to hold the serving carried object bobbin B obliquely from below, can be conveyed lifting without damaging the serving transported object bobbin B.

  Further, since the pair of main frames 2 are provided, it is possible to provide a lifting tool 1 that is strong and excellent in durability, and that can stably lift the bobbin B that is an object to be conveyed.

  Further, since the power transmission means for achieving the lifting movement of the lifting hook 8 as the swinging movement of the pair of grip arms 14 and 14A is the roller chain 15, maintenance is easily performed even when the roller chain 15 is consumed. And can be serviced, so it is highly practical.

  In addition, since the safety pin 30 is provided for fixing the relative position of the swing arms 5 and 5A with respect to the main frame 2 when the lifting / lowering hook 8 is in the raised position for lifting the bobbin B as the object to be conveyed, By moving the pin 30 to the hole 7 provided in the swing arms 5 and 5A, a series of operations of the hanger 1 can be locked, so that the bobbin B as the object to be conveyed can be lifted in a stable state. it can.

  Further, the hanger 1 includes lock plates 29 and 29A that are biased by the biasing force of the spring 36 that is an elastic body, and safety pins 30 that are integrally formed with the lock plates 29 and 29A. 30 is a structure in which the swing arm 5, 5A interlocked with the lifting of the lifting tool 1 is inserted into the hole 7 provided in the swing arm 5, 5A by the biasing force of the spring 36, which is an elastic body. Therefore, the safety pin 30 automatically locks the swing arm 5 as the hoist 1 is lifted, so that the bobbin B that is the object to be conveyed is stabilized in the state that the hoist 1 lifts the bobbin B that is the object to be conveyed. Can be transported. Furthermore, since the swing arm 5 can be automatically locked, the work of the operator can be reduced, and it is safe and practical.

  Further, since the power transmission means for achieving the lifting movement of the lifting hook 8 as the swinging movement of the pair of grip arms can be combined with a multi-stage gear instead of the roller chain 15, a large lever ratio can be obtained by the multi-stage gear. Therefore, it is possible to suspend an undefined heavy object such as a stone.

  The embodiment of the present invention has been described in detail above, but the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the sheet of the present invention.

  In this embodiment, a U-shaped main frame that opens downward is used, but various types are applicable depending on the size of the object to be transported, such as a C-shaped main frame instead of a U-shaped main frame. Is possible. In this embodiment, the object to be conveyed is indicated by bobbin B. However, if a pair of swing arms and a pair of grip arms are arranged radially, for example, a sphere or the like can be lifted. Further, the power transmission means for achieving the lifting movement of the lifting hook as the swinging movement of the pair of grip arms may be a combination of multi-stage gears instead of the roller chain.

  The hanging tool in the second embodiment will be described with reference to FIG.

A pair of C-shaped main frames 51 opened downward, a plurality of interlocking multi-stage gears 60 provided along both sides of the main frame 51, and a lower gear 60A provided at the lowermost part of the multi-stage gear 60 A grip arm 61 integrally formed with the lower gear 60A that can be folded in conjunction with the multi-stage gear 60, and a lifting hook 70 that is provided at the upper part of the main frame 51 and that can move up and down in the vertical direction. The rack 80 provided below the lifting hook 70, the upper gear 60B provided at the top of the multi-stage gear guided to the rack 80, the stopper pin 71 that can be adjusted up and down with respect to the main frame 51, and the vertical adjustment The suspension tool 50 constituted by the fixed grip 72 for temporarily fixing the stopper pin is a to-be-conveyed object such as a bobbin or a stone I. When transported by a hook 90 such as a crane, the grip arm 61 and the stopper pin 71 support the stone I as the object to be transported. The lifting tool can be lifted up while stabilizing.

In addition, since the rack 80 is linked to the interlock of the multi-stage gear 60, the lever ratio can be greatly improved, so that the gripping force of the grip arm 61 can be greatly improved, and an unspecified shape is obtained. It is possible to easily lift or hold stones or the like.
Note that the hanger 50 according to the second embodiment can hold the object to be conveyed from the oblique lower side by the grip arm 61. Further, since the power of the grip arm 61 can be greatly improved by the lever ratio of the multistage gear 60 and the rack 80, a heavy bobbin can be supported by the grip arm 61 from below according to the application, or a stone or the like Can be easily sandwiched and lifted.

It is a front view which shows the hanging tool of the state which folded the grip arm in Example 1. FIG. It is a front view which shows the suspension tool of the state which opened the grip arm same as the above. It is a plane sectional view of a hanging tool same as the above. It is left side sectional drawing of a hanging tool same as the above. It is a front view which shows the suspension tool of the state which folded the grip arm in Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting tool 2 Main frame 5, 5A Swing arm 5C Other end part 7 Hole part 8 Lifting hook 14, 14A Grip arm 15 Roller chain (power transmission means)
29, 29A Lock plate 30 Safety pin 36 Spring (elastic body)

Claims (6)

  A grip arm that is swingably provided at the lower end of both the U-shaped main frame and the C-shaped main frame that opens downward, and the upper end of the main frame are connected to each of the grip arms by power transmission means. A pair of swing arms and a lifting hook that is pivotably connected to the other ends of the pair of swing arms, and the lifting hook moves up and down with respect to the main frame via the power transmission means. A lifting device characterized in that the swinging movement of the grip arm is achieved, and the object to be conveyed is lifted by the pair of swinging grip arms.   The suspension tool according to claim 1, wherein a pair of the main frames are provided.   The suspension device according to claim 1 or 2, wherein the power transmission means for achieving the lifting movement of the lifting hook as a swinging movement of the pair of grip arms is a roller chain.   The safety pin for fixing the relative position of the swing arm with respect to the main frame when the lifting hook is in the raised position for lifting the conveyed object. Suspension device according to one claim.   The lock plate is biased by the biasing force of the elastic body, and a safety pin integrally formed with the lock plate. The safety pin includes the swing arm that is interlocked with the lifting of the lifting tool. The suspension tool according to any one of claims 1 to 4, wherein the safety pin is inserted into a hole provided in a swing arm by an urging force of the elastic body. 4. The suspension according to claim 1, wherein the power transmission means for achieving the lifting movement of the lifting hook as a swinging movement of the pair of grip arms is a combination of multi-stage gears. Ingredients.