JP5846481B2 - Hanging tool - Google Patents

Description

  The present invention relates to a hanger that is lightweight and small, and that facilitates clamping of a conveyed object even in a narrow space.

  Many battery modules incorporating a plurality of battery cells are assembled in a battery case mounted on an electric vehicle. When the battery module is assembled to the battery case, the battery module is relatively heavy, so that an operator uses a crane device such as a hoist crane to lift and carry the battery module. In this case, it is necessary to assemble a large number of battery modules at a narrow interval in the battery case. Therefore, it is necessary to facilitate the assembly of one battery module and improve the working efficiency.

  Patent Document 1 discloses a battery hanging tool used in an electric forklift to replace a loaded used battery with a charged battery. This battery hanging tool uses a chain, and a confirmation plate for confirming the lifting height of the battery is provided on the chain. By checking the lifting height of the battery with this confirmation plate, interference with peripheral devices such as a handle can be prevented.

  In Patent Document 2, a notch for fitting and locking a hanging jig is formed in the peripheral portion of a battery case containing a large number of battery modules, and the hanging jig locked to the notch is formed. The structure which connects a tool to a chain block or a winch via a wire and moves a battery case is disclosed.

  Patent Document 3 discloses a battery hanging tool used in an electric forklift to replace a loaded used battery with a charged battery. The battery hanging tool is attached to the battery case using the holes provided in the battery case without modifying the battery case, the battery cell housed in the battery case, and the vehicle body side. The battery case is lifted from the forklift via a lifting tool.

JP-A-8-40698 JP-A-9-92405 JP 2003-128378 A

  As described above, when a large number of battery modules are assembled to the battery case at a narrow interval, it is necessary to shorten the time for assembling each battery module and improve the work efficiency. All of the means disclosed in Patent Documents 1 to 3 are for lifting the entire battery case with a chain, a wire, or other hanging tool, and do not assemble a battery module in the battery case. Therefore, it does not answer the needs.

  Conventionally, when lifting an object to be transported such as a battery module, a lifting tool having a pair of link type arms is used, and an operator manually operates the pair of arms to clamp the object to be transported. The lifting tool was lifted by a hoist crane or the like and transported. Therefore, it takes time for the clamping operation, and the working efficiency is poor.

  In view of the problems of the prior art, the present invention realizes a suspension that is light and small, and can easily clamp a transported object even in a narrow space, and thereby can efficiently lift a large number of transported objects. For the purpose.

In order to achieve such an object, the hanger of the present invention is provided with a fixed arm fixed to both ends of the main body frame arranged on the upper surface of the object to be transported and toward the gripping position of the object to be transported, and pivoted to the body frame. An open / close arm pivotally supported about an axis is provided, and the side or bottom surface of the object to be conveyed is gripped by one of these arms. Furthermore, an operation lever for rotating the open / close arm to the non-grip position and the grip position, and a lock mechanism for fixing the operation lever to the non-grip position and the grip position with respect to the object to be conveyed, the lock mechanism includes the operation lever A second rotation shaft that pivotally supports the lever so as to be rotatable in a direction perpendicular to the rotation direction of the opening / closing arm with respect to the opening / closing arm, and provided on the main body frame, with the second rotation shaft as a center. It is characterized in that it is located in the rotation direction of the operation lever, and the open / close arm is constituted by a non-gripping position and a concave groove for fitting and locking the operation lever at the gripping position with respect to the conveyed object .

  With the above configuration, the operating lever is operated to leave the open / close arm at the non-gripping position away from the conveyed object, and in this state, the main body frame is positioned on the conveyed object. At this time, the fixed arm is positioned at a position for gripping the object to be conveyed. Next, the operating lever is operated to rotate the open / close arm to a position for gripping the object to be conveyed. Thus, the fixed arm and the open / close arm grip the opposite side surfaces of the object to be conveyed or both end regions of the bottom surface of the object to be conveyed. In this state, the lifting tool is lifted to lift the object to be conveyed. As described above, since only one of the opening / closing arms can be opened / closed, the distance between the adjacent objects to be conveyed is maximum, and there is a space in which the opening / closing arm in the non-clamping position can be inserted into the clamping position of the object to be conveyed. I just need it.

  Therefore, even when there is only a small space around the object to be conveyed, the object to be conveyed can be lifted. In addition, since the operation lever is arranged above the main body frame on the main body frame side, clamping is possible even if an operator does not put his hand between the objects to be conveyed, regardless of the space between the objects to be conveyed. The operation lever can be operated easily.

In the device according to the present invention , the lock mechanism is provided on the main body frame, a second rotation shaft that pivotally supports the operation lever so that the operation lever can rotate in a direction perpendicular to the rotation direction of the opening / closing arm. The opening / closing arm is composed of a concave groove that fits and locks the operation lever at the non-gripping position and the gripping position with respect to the conveyed object. The By fitting the operation lever into the concave groove, the open / close arm can be stably held in the open position and the gripping position with respect to the conveyed object. Further, the lock function can be provided by a simple mechanism in which the second rotation shaft and the concave groove are provided.

  In the device according to the present invention, the main body frame may be provided with a guide member that is fitted to a corner of the object to be conveyed and positions the main body frame with respect to the object to be conveyed. This facilitates the positioning of the main body frame with respect to the conveyed object with a simple mechanism.

  When the object to be transported is a rectangular parallelepiped battery module and a large number of battery modules are assembled in the battery case at a narrow interval, the suspension device of the present invention can be used to efficiently install the battery module in a short time. Can be done.

  In the device of the present invention, a handle may be provided on the upper part of the main body frame. When an operator operates the lifting tool with the handle, braking of the lifting tool becomes easy. Therefore, it becomes easy to position the hanger with respect to the conveyed object and to brake the conveyed object lifted by the hanger. Further, since the handle is provided on the upper part of the main body frame, it is not necessary for an operator to put a hand between the objects to be conveyed, and handling becomes easy.

  According to the hanging tool of the present invention, the fixed arm and the opening / closing arm are provided at both ends of the main body frame, and only the opening / closing arm is operated by the operation lever so as to grip the object to be conveyed, so that the clamping operation is easy. . Further, it is sufficient that there is a space in which the opening / closing arm in the non-clamping position can be arranged at the clamping position of the conveyed object at the maximum. Therefore, the object to be conveyed can be clamped easily and in a short time even in a narrow space, and the object to be conveyed can be lifted efficiently. In addition, since the operation lever is on the main body frame side, the operation lever can be easily operated regardless of the space between the objects to be conveyed. Furthermore, the above-described effects can be obtained with a simple and low-cost configuration including a main body frame, a fixed arm, an opening / closing arm, and an operation lever.

It is a top view of 1st Embodiment which used this invention apparatus for lifting of the battery module. It is a front view of the first embodiment. It is a right view of the first embodiment. It is a left view of the said 1st Embodiment. It is a perspective view of the battery case which assembled | attached the battery module. It is a front view of 2nd Embodiment of this invention apparatus, (A) shows the time of hanging tool positioning, (B) shows the time of clamping. It is a perspective view of 3rd Embodiment of this invention apparatus.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

(Embodiment 1)
A first embodiment in which a lifting tool of the present invention is applied to installation of a battery module will be described with reference to FIGS. FIG. 5 shows a state in which a plurality of battery modules are assembled to a tray constituting a battery case mounted on an electric vehicle. The battery module 5 </ b> A stored in a storage box (not shown) is lifted by a lifting tool and assembled to a plurality of recesses 3 formed in parallel with the tray 1 as illustrated. A battery module is stored in the storage box at a narrow interval, and the battery module 5A needs to be clamped with a lifting tool and positioned and fixed to the recess 3 formed at a narrow interval.

  The battery module 5A includes a plurality of battery cells 5a and a pair of left and right covers 5b and 5b that cover the outer surface of the assembly of the plurality of battery cells 5a. On one side surface of the battery module 5, the left and right covers 5b and 5b are connected to each other via an L-shaped bracket 7 by two stud bolts 6 and 6 implanted in the cover. Further, the left and right covers 5b and 5b are also coupled to each other via L-shaped metal fittings 9 by two stud bolts 8 and 8 implanted in the cover on the other end side of the battery module 5A ( (See FIG. 1).

  The structure of the hanging tool 10A of this embodiment will be described with reference to FIGS. The hanging tool 10A includes a prismatic main body frame 12A. An eyebolt 16 into which a hook 14 of a crane device (not shown) is inserted and a handle 18 are mounted on the upper surface of the main body frame 12A. A fixing arm 22 is fixed to one end of the main body frame 12A by a bolt 20 in a direction perpendicular to the main body frame 12A. An opening / closing arm 24 is attached to the other end of the main body frame 12A so as to be rotatable about a hinge pin 26. A bracket 28 is fixed to an end of the main body frame 12A, and a hinge pin 26 is pivotally supported on the bracket 28 so as to be rotatable.

  An arm bracket 30 is attached to the hinge pin 26, and the open / close arm 24 is screwed to the arm bracket 30 with a bolt 32. With this configuration, the operator can move the open / close arm 24 in the arrow b direction by moving the operation lever 38 in the arrow a direction (the axial direction of the main body frame 12).

  A clamp portion 22 a extending in the lateral direction is integrally formed at the distal end of the fixed arm 22. Two U-shaped grooves 22b and 22b for accommodating the stud bolts 6 and 6 are formed in the clamp portion 22a. Similarly, a clamp portion 24 a extending in the horizontal direction is integrally formed at the tip of the open / close arm 24. Two U-shaped grooves 24b and 24b for accommodating the stud bolts 8 and 8 are also formed in the clamp portion 24a.

  On the upper part of the arm bracket 30, a hinge pin 34 is pivotally supported. The axial direction of the hinge pin 34 is arranged so as to be orthogonal to the axial direction of the hinge pin 26. A lever bracket 36 is attached to the hinge pin 34, and an operation lever 38 is integrally formed with the lever bracket 36. The operation lever 38 is disposed at a position protruding above the main body frame 12A. In the vicinity of the operation lever 38, the plate 40 is mounted on the long side surface of the main body frame 12 </ b> A by bolts 42.

  On the upper side of the plate 40, two concave grooves 40a and 40b into which the operation lever 38 can be inserted are formed. The hinge pin 34 and the plate 40 constitute a lock mechanism for the operation lever 38. When the open / close arm 24 is in the non-clamping position away from the stud bolts 8 and 8, when the operating lever 38 is tilted toward the plate 40 around the hinge pin 34, the operating lever 38 is inserted into the groove 40a. When the open / close arm 24 is in the clamping position where the U-shaped grooves 24b and 24b accommodate the stud bolts 8 and 8, when the operating lever 38 is tilted around the hinge pin 34, the operating lever 38 is inserted into the concave groove 40b. The

  Guide members 44 and 46 are attached to the lower surfaces of both ends of the main body frame 12A. The guide members 44 and 46 include recesses 44a and 46a facing the upper surface of the battery module 5A, respectively. The recesses 44a and 46a have dimensions that match the width of the upper surface of the battery module 5A, and the guide members 44 and 46 can be fitted into the upper part of the battery module 5A by the recesses 44a and 46a. Furthermore, the guide member 46 includes a convex portion 46b that abuts on the upper end of the side surface on the short side of the battery module 5A.

  In such a configuration, when the battery module 5A is lifted using the lifting tool 10A, first, an operator operates the operation lever 38, inserts the operation lever 38 into the concave groove 40a, and opens and closes the open / close arm 24 from the battery module 5. Hold in the released open position (unclamped position). Next, the worker holds the handle 18 and places the main body frame 12 </ b> A on the upper surface of the battery module 5. At this time, the upper portion of the battery module 5A is fitted into the concave portions 44a and 46a of the guide members 44 and 46, and the convex portion 46b of the guide member 46 is disposed so as to contact the upper portion of the short side surface of the battery module 5A. . Accordingly, the fixed arm 22 is disposed at a position away from the stud bolts 6 and 6 by a distance d.

  Next, the main body frame 12A is slid by a distance d in the direction of arrow c, and the stud bolts 6 and 6 are inserted into the U-shaped grooves 22b and 22b of the clamp portion 22a. Thereby, the convex portion 46b of the guide member 46 is separated from the short side surface of the battery module 5A by a distance d. Next, the worker rotates the operation lever 38 around the hinge pin 34 and removes it from the concave groove 40a. Next, the operating lever 38 is rotated around the hinge pin 26 to move the open / close arm 24 to the battery module side, and the stud bolts 8, 8 are accommodated in the U-shaped grooves 22 b, 22 b of the open / close arm 24. As a result, the fixed arm 22 and the open / close arm 24 clamp the battery module 5A.

  In this state, a crane device (not shown) is operated to lift the battery module 5A. When the battery module 5A is lifted, the edges constituting the U-shaped grooves 22b and 24b enter the insides of the heads of the stud bolts 6 and 8, so that there is no fear that the stud bolts come off from the U-shaped grooves.

  According to the present embodiment, since the operator operates the operation lever 38 to clamp the battery module 5A, the operator does not need to put his hand between the battery modules, and the clamping operation is facilitated. Further, if there is a space between the battery modules 5A where the open / close arm 24 that is at the maximum in the non-clamping position can be inserted into the clamping position of the battery module 5A, the battery module 5A can be clamped. Therefore, the battery module 5A can be lifted even when there is only a narrow space between the battery modules.

  Further, since the stud bolts 8 and 8 provided on the opening / closing arm 24 side are disposed on the upper part of the side surface of the short side of the battery module 5A, the length of the opening / closing arm 24 can be shortened. Therefore, since the movement width of the clamp part 24a can be reduced with respect to the rotation angle of the opening / closing arm 24 around the hinge pin 26, the space required for the clamping operation can be further reduced. Moreover, since the length of the opening / closing arm 24 is shorter than the fixed arm 22, the hanging tool 10A can be reduced in size.

  Further, since the handle 18 is provided on the upper surface of the main body frame 12A, the operator can easily brake the suspension 10A by holding the handle 18. Therefore, the positioning of the suspension tool 10A with respect to the battery module 5 can be facilitated, and the braking of the battery module 5 lifted by the suspension tool 10A can be facilitated. As described above, since the operation portions such as the operation lever 38 and the handle 18 are all disposed on the upper portion of the main body frame 12A, the clamp total arm bracket 30 and the lifting operation can be easily performed. Further, by inserting the operation lever 38 into the concave groove 40a or the concave groove 40b of the plate 40, the open / close arm 24 can be stably fixed to the non-clamping position or the clamping position. The opening / closing arm 24 can be operated with a simple structure in which the grooves 40a and 40b are formed in the plate 40.

  Further, since the guide members 44 and 46 are attached to the main body frame 12A, positioning of the main body frame 12A with respect to the battery module 5 is facilitated. Moreover, since the hanging tool 10A has a simple configuration including only the main body frame 12A, the fixed arm 22, the opening / closing arm 24, the operation lever 38, and the like, it can be reduced in size, weight, and cost. Further, since the fixing arm 22 and the opening / closing arm 24 are clamped to the stud bolts 6, 6 and 8, 8 provided in advance in the battery module 5A, it is not necessary to make any special modification to the battery module 5A. .

  In addition, since the distance between the fixed arm 22 and the convex portion 46b of the guide member 46 is longer than the long side dimension of the battery module 5A by d, the suspension 10A is positioned on the battery module 5A. By positioning the convex portion 46b and the end surface of the battery module 5A, the positioning of the hanging tool 10A is facilitated.

(Embodiment 2)
Next, a second embodiment of the device of the present invention will be described with reference to FIG. The hanging tool 10B according to the present embodiment is an example in the case of lifting a battery module without a stud bolt used as a grip portion on a side surface. The battery module 5 </ b> B is placed on a shock absorber 52 provided on the bottom surface of the storage box 50. Therefore, the bottom surfaces of both ends of the long side of the battery module 5 </ b> B are in a state of floating from the bottom surface of the storage box 50.

  The configuration of the hanging tool 10B of the present embodiment is the same as that of the first embodiment in main parts such as the main body frame 12A, the eyebolt 16, the handle 18, the fixed arm 22, the open / close arm 24, and the operation lever 38. Yes. However, the lengths of the fixed arm 22 and the open / close arm 24 are long so that the clamp portions 22a and 24a are located on the bottom surface of the battery module 5B. The clamp portions 22a and 24a extend in a direction perpendicular to the battery module from the arm body, and have a shape that can support the bottom surface of the battery module 5B.

  The guide members 44 and 46 are slightly different in shape from the guide members 44 and 46 of the first embodiment. That is, the guide member 46 does not have the convex portion 46b that abuts the upper portion of the side surface of the battery module 5B on the short side. On the other hand, each of the guide members 44 and 46 includes concave portions 44a and 46a for fitting the upper portion of the battery module 5B, and has a positioning function similar to that of the first embodiment.

  FIG. 6A shows a state at the time of positioning of the hanger. At this time, the operation lever 38 is inserted into the concave groove 40a of the plate 40, and the open / close arm 24 is in the open position (non-clamp position). After positioning the hanger 10A on the battery module 5B, the operator removes the operating lever 38 from the concave groove 40a and slides the hanger 10B in the direction of arrow c. At the same time, the operation lever 38 is moved, and the clamp portion 22a of the fixed arm 22 and the clamp portion 24a of the open / close arm 24 are inserted below the bottom surface of the battery module 5B. This state is shown in FIG. Thus, the battery module 5 is clamped by the fixed arm 22 and the opening / closing arm 24, and the battery module 5B can be lifted by pulling up the lifting tool 10B.

  According to this embodiment, even in the battery module 5B having no stud bolt on the side surface, the battery module 5B is lifted by applying the clamp portions 22a and 24a of the fixed arm 22 and the open / close arm 24 to the bottom surface of the battery module 5B. Can do.

(Embodiment 3)
Next, a third embodiment of the device of the present invention will be described with reference to FIG. In the present embodiment, the battery module 5C is doubled in length in the width direction than the battery module 5A or 5B of the first embodiment or the second embodiment, and the battery module 5C having a large size and double the weight is lifted. It is an example. The main body frame 12B constituting the hanging tool 10C of this embodiment includes a rectangular parallelepiped frame 60 disposed in the longitudinal direction of the battery module 5C, and a rectangular parallelepiped coupled to both ends of the frame 60 in a direction perpendicular to the frame 60. It consists of shaped frames 62a and 62b.

  The eyebolt 16 is provided at the center of the frame 60, and the two handles 18 are provided at the center of the frames 62a and 62b. A fixed arm 22 is provided at one end of each of the frames 62a and 62b, and an opening / closing arm 24 and an operation lever 38 are provided at the other end of each of the frames 62a and 62b. Further, guide members 44 and 46 for positioning the main body frame 12B on the battery module 5C are mounted on the frames 62a and 62b, respectively. A stud bolt (not shown) is provided on the long side surface of the battery module 5C, and the clamp portions 22a and 24a of the fixed arm 22 and the open / close arm 24 clamp the stud bolt, respectively. The battery module 5C is lifted in a state where the fixing arm 22 and the opening / closing arm 24 clamp the stud bolt.

  According to the present embodiment, since the main body frame 12B includes the frame 60 and the frames 62a and 62b and has improved strength, the battery module 5C having a volume and weight twice that of the battery module 5A or 5B is lifted. be able to. Further, since the opening / closing arm 24 is provided only on one long side surface of the battery module 5C, even when the distance between the battery module 5C and the surrounding battery modules is narrow, the battery module 5C The effects similar to those of the first embodiment or the second embodiment can be obtained, such as easy clamping.

  Furthermore, since two sets of the fixed arm 22 and the open / close arm 24 are arranged in the axial direction of the battery module 5C, the heavy battery module 5C can be stably lifted. In addition, since the two handles 18 are provided, the suspension tool 10C and the battery module 5C lifted by the suspension tool 10C can be easily braked. Further, since the guide members 44 and 46 are attached to the lower surfaces of the frames 62a and 62b, respectively, the suspension tool 10C can be easily positioned with respect to the battery module 5C.

  Two battery modules can be lifted simultaneously by using a modification of the hanging tool 10C. That is, a hanging tool having a shorter frame 60 and longer frames 62a and 62b is used. Two battery modules are arranged in parallel, and one battery module is gripped by one fixed arm 22 and the lower lower mold 24 of this suspension, and the other battery module is held by the other fixed arm 22 and the lower lower mold 24. Hold the module. As a result, two battery modules separated from each other can be lifted simultaneously.

  ADVANTAGE OF THE INVENTION According to this invention, the hanging tool which can clamp a to-be-conveyed object easily by lever operation in a small space is lightweight and small.

1 Tray 3, 44a, 46a Recess 5A, 5B, 5C Battery module 5a Battery cell 5b Cover 6,8 Stud bolt 7,9 L-shaped bracket 10A, 10B, 10C Lifting tool 12A, 12B Body frame 14 Hook 16 Eye bolt 18 Handle 20, 32, 42 Bolt 22 Fixed arm 22a, 24a Clamp part 22b, 24b U-shaped groove 24 Opening / closing arm 26, 34 Hinge pin 28 Bracket 30 Arm bracket 36 Lever bracket 38 Operation lever 40 Plate 40a, 40b Concave groove 44, 46 Guide member 46b Convex part 50 Storage box 52 Buffer stand 60, 62a, 62b Frame

Claims (4)

A main body frame which is disposed on the upper surface of the object to be transported and has a mounting portion on which a lifting device of the crane device is mounted;
A fixed arm that holds the opposite side surfaces of the object to be conveyed or both ends of the bottom surface of the object to be held from both sides, and is fixed to one end of the main body frame toward the holding position of the object to be conveyed, and the main body At the other end of the frame, an open / close arm pivotally supported by the main body frame about the rotation axis;
An operation lever that extends upward to be positioned on the main body frame side and rotates the opening and closing arm;
A lock mechanism for fixing the operation lever to a non-gripping position and a gripping position with respect to the conveyed object ,
The locking mechanism includes a second rotation shaft that pivotally supports the operation lever so as to be rotatable in a direction perpendicular to the rotation direction of the opening / closing arm with respect to the opening / closing arm;
Provided on the main body frame, positioned in the rotation direction of the operation lever around the second rotation axis, and the open / close arm engages and locks the operation lever at the non-gripping position and the gripping position with respect to the conveyed object A hanging tool comprising a concave groove .   The suspension according to claim 1, wherein a guide member is provided on the main body frame so as to be fitted to a corner portion of the object to be conveyed and to position and arrange the main body frame with respect to the object to be conveyed. Ingredients.   The suspension tool according to claim 1 or 2, wherein the object to be transported is a rectangular parallelepiped battery module. The handle according to any one of claims 1 to 3, wherein a handle is provided on an upper surface of the main body frame.

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