JP5341803B2 - Conveying equipment - Google Patents

Description

  The present invention relates to a transport device used for transporting a cable drum around which a cable is wound, for example, from a storage location to a construction site or pulling out a cable from a cable drum transported to a construction site.

  For example, a cable such as a signal cable or a power cable used in electrical work is carried into a construction site while being wound around a cable drum. The cable drum has a winding drum portion around which the cable is wound and a pair of flanges facing each other with the winding drum portion interposed therebetween. The flange has a diameter larger than that of the winding drum and is coaxial with the winding drum so as to protect the cable wound around the winding drum.

  Since this type of cable drum is heavy and large, when the cable drum is moved from the storage location to the construction site, an operator rolls the cable drum or uses a truck crane or a forklift.

  The cable drum conveyed to the construction site is attached to a cable feeder as shown in Patent Document 1, for example. The cable feeder has a horizontal support shaft that is inserted into the center of the cable drum. Therefore, when the cable drum is attached to the support shaft of the cable feeder and the tip of the cable wound around the winding drum is pulled, the cable drum rotates around the support shaft. Therefore, the cable wound around the winding drum can be easily pulled out.

JP 2000-103548 A

  However, conventionally, when pulling out the cable from the cable drum transported to the construction site, it is necessary to reload the cable drum to a dedicated cable feeder. In particular, since the cable drum is heavy and large, it is inevitable that the work of transferring the cable drum to the cable feeder is laborious and labor intensive.

  Therefore, workability is poor, and it takes time to pull out the cable from the cable drum transported to the construction site, leaving room for improvement in efficiently laying the cable.

  The object of the present invention is to allow the cable to be pulled out while the cable drum is still placed on the fork arm, improve the workability when laying the cable, and provide a rotating cable drum. The object is to obtain a transport device that can be held in place on the fork arm.

In order to achieve the above object, a transport device according to one aspect of the present invention is provided coaxially with a winding drum portion around which a cable is wound and the winding drum portion therebetween, than the winding drum portion. A conveying device for conveying a cable drum comprising a pair of flanges having a large diameter,
A body having wheels;
A pair of fork arms that are supported by the body and extend laterally at intervals to support the cable drum from below;
And a pair of rollers that are rotatably supported on the inner portions of the fork arm that face each other, extend in the longitudinal direction of the fork arm, and are arranged side by side in the longitudinal direction of the fork arm.
The cable drum is placed on the fork arm in a posture in which the axis of the winding drum portion is along the longitudinal direction of the fork arm so that the flange extends between the fork arms. the said rollers rotatably supports the cable drum on the fork arm by contact with the peripheral surface of the flange of the cable drum,
Wherein said roller adjacent in the longitudinal direction of each fork arm, being inclined in opposite directions with respect to the direction of the fork arm extends so as to be positioned between said roller center of gravity adjacent the cable drum that rotates The cable drum is moved.

  According to the present invention, the cable drum can be quickly transferred from the cable drum carrying work to the cable drawing work, and the rotating drum can be held at a fixed position of the fork arm. Therefore, workability at the time of laying the cable can be improved.

1 is a perspective view of a hand forklift according to a first embodiment of the present invention. The top view of the fork which has the 1st and 2nd roller in the 1st Embodiment of this invention. Sectional drawing which follows the F3-F3 line | wire of FIG. The perspective view which shows the state by which the fork arm of the hand forklift was inserted under the cable drum in the 1st Embodiment of this invention. The perspective view which shows the state which pulled out the cable from the cable drum mounted on the fork arm of the hand forklift in the 1st Embodiment of this invention. The perspective view of the hand forklift which concerns on the 2nd Embodiment of this invention. The top view of the fork which has the 1st and 2nd roller in the 2nd Embodiment of this invention. The perspective view which shows the state which pulled out the cable from the cable drum mounted on the fork arm of the hand forklift in the 2nd Embodiment of this invention. The perspective view of the hand forklift which concerns on the 3rd Embodiment of this invention. The top view of the fork which concerns on the 3rd Embodiment of this invention. The top view which shows the fork which concerns on the 4th Embodiment of this invention in a partial cross section.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 discloses a hand-held hand forklift 1 that is an example of a transport device. The hand forklift 1 is for transporting, for example, a cable drum 2 used when laying a cable for electrical work from a storage location to a construction site.

As shown in FIGS. 2, 4, and 5 , the cable drum 2 includes a cylindrical winding body 4 around which a cable 3 such as a signal cable and a power cable is wound, and the winding body 4 interposed therebetween. And a pair of flanges 5a and 5b facing each other. The flanges 5 a and 5 b are made of a disc having a diameter larger than that of the winding drum portion 4, and are provided coaxially with respect to the winding drum portion 4.

  As shown in FIG. 1, the hand forklift 1 includes a main body 7 and a fork 8. A steering wheel 9 is supported on the lower end of the main body 7. The wheel 9 is operated to the left and right by a handle 10 erected from the main body 7.

  The fork 8 has a pair of fork arms 11a and 11b. The fork arms 11a and 11b are arranged in parallel with a distance from each other, and extend from the main body 7 in the lateral direction.

  The fork arms 11a and 11b have a first end 12 and a second end 13, respectively. The first end 12 is adjacent to the main body 7. The second end portion 13 is located on the opposite side of the first end portion 12 along the longitudinal direction of the fork arms 11a and 11b. The second ends 13 of the fork arms 11 a and 11 b are separated from each other so that they can be easily inserted under the cable drum 2.

  Further, auxiliary wheels 14 are supported on the lower surface of the second end portion 13, respectively, and a connecting hole 15 is formed at the tip of the second end portion 13.

  The fork arms 11 a and 11 b are connected to each other by a cross member 17 straddling between the first end portions 12. The cross member 17 is supported by the main body 7 via a hydraulic jack 18. The hydraulic jack 18 is operated by moving the upper end of the handle 10 in the front-rear direction of the hand forklift 1. As a result, the fork 8 is lifted and the fork 8 is lowered by grasping the release lever 19 provided on the handle 10 by hand.

As shown in FIGS. 1 to 3, the fork arms 11a and 11b have inner portions 21a and 21b facing each other. A pair of recesses 22a and 22b is formed in the inner portion 21a of one fork arm 11a. The recesses 22a and 22b are located between the first end 12 and the second end 13 of the fork arm 11a.

  The recesses 22a and 22b have an elongated shape extending in the longitudinal direction of the fork arm 11a, and are arranged in a line at intervals in the longitudinal direction of the fork arm 11a. The recesses 22a and 22b are continuously opened on the upper surface 23a and the inner side surface 23b of the fork arm 11a.

  Similarly, a pair of recesses 24a and 24b are formed in the inner portion 21b of the other fork arm 11b. The recesses 24a and 24b are located between the first end 12 and the second end 13 of the fork arm 11b. The recesses 24a and 24b have an elongated shape extending in the longitudinal direction of the fork arm 11b, and are arranged in a line at intervals in the longitudinal direction of the fork arm 11b. The recesses 24a and 24b are continuously opened on the upper surface 25a and the inner surface 25b of the fork arm 11b.

  Cylindrical first rollers 27a and 27b are disposed in the recesses 22a and 22b of the fork arm 11a, respectively. The first rollers 27a and 27b extend in the longitudinal direction of the fork arm 11a, and one end and the other end along the longitudinal direction are rotatably supported by the fork arm 11a via a bearing (not shown). Therefore, the first rollers 27a and 27b are adjacent to each other in the longitudinal direction of the fork arm 11a.

  The first rollers 27a and 27b are located at corners defined by the upper surface 23a and the inner surface 23b of the fork arm 11a. Part of the circumferential surface of the first rollers 27a and 27b protrudes from the upper surface 23a of the fork arm 11a.

  As shown in FIG. 2, each of the first rollers 27a and 27b has a rotation center axis O1. The rotation center axis O1 is inclined with respect to a reference line A1 extending in the front-rear direction of the hand forklift 1 along the longitudinal direction of the fork arm 11a. It is desirable that the inclination angle α1 of the first rollers 27a and 27b determined by the intersection angle between the rotation center axis O1 and the reference line A1 is 15 ° to 30 °.

  Furthermore, the inclination direction of the first roller 27a with respect to the reference line A1 and the inclination direction of the first roller 27b with respect to the reference line A1 are opposite to each other. In the present embodiment, the first rollers 27a and 27b are inclined so as to advance in the direction of the inner side surface 23b of the fork arm 11a as they proceed in the direction of the adjacent end portions.

  Similarly, cylindrical second rollers 28a and 28b are disposed in the recesses 24a and 24b of the fork arm 11b, respectively. The second rollers 28a and 28b extend in the longitudinal direction of the fork arm 11b, and one end and the other end along the longitudinal direction are rotatably supported by the fork arm 11b via a bearing (not shown). Therefore, the second rollers 28a and 28b are adjacent to each other in the longitudinal direction of the fork arm 11b.

  The second rollers 28a and 28b are located at corners defined by the upper surface 25a and the inner surface 25b of the fork arm 11b. A part of the peripheral surface of the second rollers 28a and 28b protrudes from the upper surface 25a of the fork arm 11b.

  As shown in FIG. 2, each of the second rollers 28a and 28b has a rotation center axis O2. The rotation center axis O2 is inclined with respect to a reference line A2 extending in the front-rear direction of the hand forklift 1 along the longitudinal direction of the fork arm 11b. The inclination angle α2 of the second rollers 28a and 28b determined by the intersection angle between the rotation center axis O2 and the reference line A2 is desirably 15 ° to 30 °.

  Furthermore, the inclination direction of the second roller 28a with respect to the reference line A2 and the inclination direction of the second roller 28b with respect to the reference line A2 are opposite to each other. In the present embodiment, the second rollers 28a and 28b are inclined so as to advance in the direction of the inner surface 25b of the fork arm 11b as they proceed in the direction of the adjacent ends.

  Therefore, when the fork 8 is viewed in plan as shown in FIG. 2, the first roller 27a and the second roller 28a face each other in the direction in which the fork arms 11a and 11b are arranged and proceed in the direction of the main body 7. And tilted away from each other. Similarly, the first roller 27b and the second roller 28b are also inclined to face each other in the direction in which the fork arms 11a and 11b are arranged and to approach each other as they proceed in the direction of the main body 7.

As shown in FIGS. 2 and 3 , one fork arm 11a has an outer surface 23c located on the opposite side of the first rollers 27a and 27b. Similarly, the other fork arm 11b has an outer surface 25c located on the opposite side of the second rollers 28a, 28b. Outriggers 30a and 30b for preventing overturning are supported on the outer surfaces 23c and 25c of the fork arms 11a and 11b, respectively. The outriggers 30a and 30b are located between a storage position where the outriggers 30a and 30b are stored along the outer side surfaces 23c and 25c of the fork arms 11a and 11b, and a use position where the outriggers 30a and 11b project laterally from the outer side surfaces 23c and 25c. Can be rotated.

  Further, the fork 8 of the present embodiment includes a reinforcing metal fitting 31. The reinforcing metal fitting 31 is composed of a single elongated metal round bar. Locking portions 32 a and 32 b that are bent downward are formed at one end and the other end along the longitudinal direction of the reinforcing metal fitting 31, respectively. The locking portions 32a and 32b can be fitted into the connecting holes 15 of the fork arms 11a and 11b.

  By fitting the locking portions 32 a and 32 b of the reinforcing metal fitting 31 into the connecting hole 15, the second metal end portions 13 of the fork arms 11 a and 11 b can be connected by the reinforcing metal fitting 31. As a result, the rigidity of the fork 8 is improved, and the second ends 13 of the fork arms 11a and 11b can be prevented from being deformed in a direction away from each other.

  Next, a procedure for transporting the cable drum 2 stored in the storage location using the hand forklift 1 to the construction site and laying the cable 3 will be described.

  As shown in FIG. 4, the cable drum 2 is placed on the floor of the storage place in a posture in which the winding drum section 4 is placed horizontally. The hand forklift 1 is moved manually toward one flange 5a of the cable drum 2. At this time, the fork 8 is lowered to the lowest position.

  Next, the second ends 13 of the fork arms 11a and 11b are inserted under the flanges 5a and 5b of the cable drum 2, and the first rollers 27a and 27b of the fork arm 11a and the second rollers 28a of the fork arm 11b are inserted. , 28b is moved until the hand forklift 1 reaches directly below the flanges 5a, 5b of the cable drum 2.

  When the first rollers 27a and 27b and the second rollers 28a and 28b reach just below the flanges 5a and 5b of the cable drum 2, the handle 10 is moved back and forth to operate the hydraulic jack 18, and the hydraulic jack 18 Lift the fork 8. As a result, the first rollers 27a, 27b and the second rollers 28a, 28b come into contact with the outer peripheral surfaces of the flanges 5a, 5b of the cable drum 2 to receive the cable drum 2, and the cable drum 2 is the floor surface of the storage location. From the surface.

  Therefore, the cable drum 2 has a fork arm in a horizontal posture in which the axis of the winding drum portion 4 is along the longitudinal direction of the fork arms 11a and 11b so that the flanges 5a and 5b straddle the fork arms 11a and 11b. It is mounted on 11a, 11b.

  Subsequently, the engaging portions 32a and 32b of the reinforcing metal fitting 31 are fitted into the connecting holes 15 of the fork arms 11a and 11b, and the second end 13 of the fork arms 11a and 11b is connected by the reinforcing metal fitting 31.

  Next, the cable drum 2 is fixed to the fork arms 11a and 11b using a fixing band (not shown) to prevent the cable drum 2 from rolling on the fork arms 11a and 11b. In this state, the hand forklift 1 on which the cable drum 2 is placed is manually moved from the storage location to the construction site.

  When the cable drum 2 is carried into the construction site together with the hand forklift 1, as shown in FIG. 5, the outriggers 30a and 30b are rotated from the storage position toward the use position, and the tips of the outriggers 30a and 30b are grounded. At the same time, the fixing of the cable drum 2 by the fixing band is released.

  Thus, the cable drum 2 is held in a rotatable state by the first rollers 27a and 27b of the fork arm 11a and the second rollers 28a and 28b of the fork arm 11b.

  In this state, the tip of the cable 3 is pulled to the side of the cable drum 2. As a result, the cable drum 2 rotates on the fork arms 11a and 11b, and the cable 3 is pulled out from the cable drum 2. The cable 3 drawn out from the cable drum 2 is cut to a desired length by a cutter device (not shown) and used for cable laying work.

  According to the first embodiment of the present invention, the forklift 1 that transports the cable drum 2 includes the first and second rollers 27a and 27b on the inner portions 21a and 21b of the pair of fork arms 11a and 11b. , 28a, 28b. The first and second rollers 27a, 27b, 28a, and 28b are in contact with the outer peripheral surfaces of the flanges 5a and 5b of the cable drum 2, and rotatably support the cable drum 2 on the fork arms 11a and 11b. .

  For this reason, after the hand forklift 1 on which the cable drum 2 is placed is moved to the construction site, the operation can be shifted to the operation of pulling out the cable 3 wound around the cable drum 2 as it is.

  That is, the troublesome and troublesome work of transferring the cable drum 2 carried into the construction site from the hand forklift 1 to the dedicated cable feeder becomes unnecessary, and it is not necessary to prepare the cable feeder.

  As a result, the work from carrying in the cable drum 2 to pulling out the cable 3 can be easily performed in a short time. Therefore, the workability in laying the cable 3 can be improved, and the cost required for laying the cable can be reduced.

  Further, the first roller 27 a and the second roller 28 a that are in contact with the one flange 5 a of the cable drum 2 are inclined so as to move away from each other as they proceed in the direction of the main body 7 of the hand forklift 1. Similarly, the first roller 27b and the second roller 28b that are in contact with the other flange 5b of the cable drum 2 are inclined so as to approach each other as they proceed in the direction of the main body 7 of the hand forklift 1.

  Therefore, when the cable drum 2 rotates as the cable 3 is pulled out, the first and second rollers 27a, 27b, 28a, 28b are connected to the first rollers 27a, 27b adjacent to each other in the center of gravity of the rotating cable drum 2. The cable drum 2 is moved so as to be positioned between and between the second rollers 28a and 28b.

  In other words, the cable drum 2 automatically moves so that the center of gravity of the cable drum 2 is located between the first rollers 27a and 27b and between the second rollers 28a and 28b by its own weight.

  As a result, the cable drum 2 rotating on the fork arms 11a and 11b is held in a stable posture at the fixed positions of the fork arms 11a and 11b. Therefore, the cable drum 2 can be prevented from falling off the fork arms 11a and 11b and the direction of the cable drum 2 can be prevented from being changed, and the cable 3 can be smoothly pulled out from the cable drum 2.

  In addition, according to the present embodiment, the second end portions 13 positioned at the tips of the fork arms 11 a and 11 b are connected to each other by the reinforcing metal fitting 31. Therefore, the rigidity of the fork 8 can be increased by the reinforcing metal fitting 31, and even when the heavy and large cable drum 2 is placed on the fork arms 11a, 11b, the fork arms 11a, 11b can be prevented from being deformed.

  Therefore, the cable drum 2 can be held in a stable posture on the fork arms 11a and 11b, and the cable drum 2 can be transported and the cable 3 can be pulled out smoothly.

  Moreover, in the present embodiment, the outriggers 30a and 30b are attached to the outer surfaces 23c and 25c of the fork arms 11a and 11b, respectively. By rotating the outriggers 30a, 30b from the storage position to the use position and grounding, the stability of the hand forklift 1 when the cable 3 is pulled out from the cable drum 2 can be enhanced.

  Therefore, although the cable drum 2 rotates on the fork arms 11a and 11b, undesired movement and overturning of the hand forklift 1 can be prevented, and the cable 3 can be pulled out smoothly.

  The present invention is not limited to the first embodiment, and various modifications can be made without departing from the spirit of the invention.

  6 to 8 disclose a second embodiment of the present invention. The second embodiment is different from the first embodiment in the configuration for rotatably supporting the cable drum on the fork arm. Other basic configurations of the hand forklift are the same as those in the first embodiment. Therefore, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 6 and 7, single concave portions 41a and 41b are formed in the inner portions 21a and 21b of the fork arms 11a and 11b, respectively. The recesses 41a and 41b have an elongated shape extending in the longitudinal direction of the fork arms 11a and 11b. The recess 41a is opened continuously to the upper surface 23a and the inner side surface 23b of the fork arm 11a. The recess 41b is continuously open to the upper surface 25a and the inner side surface 25b of the fork arm 11b.

  A cylindrical first roller 42 is disposed in the recess 41a of the fork arm 11a. The first roller 42 extends in the longitudinal direction of the fork arm 11 a and is formed to have a total length longer than the total length of the cable drum 2. One end and the other end of the first roller 42 along the longitudinal direction are rotatably supported by the fork arm 11a via a bearing (not shown). Further, the first roller 42 is positioned at a corner defined by the upper surface 23a and the inner surface 23b of the fork arm 11a. A part of the peripheral surface of the first roller 42 protrudes from the upper surface 23a of the fork arm 11a.

  As shown in FIG. 7, the first roller 42 has a rotation center axis O1. The rotation center axis O1 is inclined with respect to a reference line A1 extending in the front-rear direction of the hand forklift 1 along the longitudinal direction of the fork arm 11a. The inclination angle α1 of the first roller 42 determined by the intersection angle between the rotation center axis O1 and the reference line A1 is preferably 15 ° to 30 °.

  A cylindrical second roller 43 is disposed in the recess 41b of the fork arm 11b. The second roller 43 extends in the longitudinal direction of the fork arm 11 b and has a total length longer than the total length of the cable drum 2. One end and the other end along the longitudinal direction of the second roller 43 are rotatably supported by the fork arm 11b via a bearing (not shown). Further, the second roller 43 is positioned at a corner defined by the upper surface 25a and the inner surface 25b of the fork arm 11b. A part of the peripheral surface of the second roller 43 protrudes from the upper surface 25a of the fork arm 11b.

  As shown in FIG. 7, the second roller 43 has a rotation center axis O2. The rotation center axis O2 is inclined with respect to a reference line A2 extending in the front-rear direction of the hand forklift 1 along the longitudinal direction of the fork arm 11b. It is desirable that the inclination angle α2 of the second roller 43 determined by the intersection angle between the rotation center axis O2 and the reference line A2 is 15 ° to 30 °.

  The inclination direction of the first roller 42 with respect to the reference line A1 and the inclination direction of the second roller 43 with respect to the reference line A2 are opposite to each other. Specifically, as shown in FIG. 7, when the fork 8 is viewed in plan, the first roller 42 and the second roller 43 face each other in the direction in which the fork arms 11a and 11b are arranged, It is inclined to approach each other as it proceeds in the direction of 7.

  As shown in FIG. 6, the 1st stopper 45a is arrange | positioned at the upper surface 23a of the fork arm 11a. The first stopper 45 a is provided at a position offset in the direction of the first end 12 of the fork arm 11 a from the intermediate portion along the longitudinal direction of the first roller 42.

  In the present embodiment, the first stopper 45a is positioned at the end of the first roller 42 near the cross member 17, and rises vertically from the upper surface 23a of the fork arm 11a. The surface of the first stopper 45a that faces the first roller 42 is a first guide surface 46a that slidably receives the end surface of the flange 5a of the cable drum 2.

  Similarly, a second stopper 45b is disposed on the upper surface 25a of the fork arm 11b. The second stopper 45 b is provided at a position offset in the direction of the first end 12 of the fork arm 11 b from the intermediate portion along the longitudinal direction of the second roller 43.

  In the present embodiment, the second stopper 45b is positioned at the end of the second roller 43 near the cross member 17, and rises vertically from the upper surface 25a of the fork arm 11b. The surface of the second stopper 45b that faces the second roller 43 is a second guide surface 46b that slidably receives the end surface of the flange 5a of the cable drum 2.

  According to the second embodiment as described above, the cable drum 2 is mounted on the fork arms 11a and 11b in a horizontal posture in which the axis of the winding drum portion 4 is aligned with the longitudinal direction of the fork arms 11a and 11b. The outer peripheral surfaces of the flanges 5 a and 5 b of the cable drum 2 are in contact with the first and second rollers 42 and 43.

  For this reason, the cable drum 2 is rotatably supported on the fork arms 11a and 11b via the first and second rollers 42 and 43. By pulling the tip of the cable 3, the cable drum 2 is It rotates on the fork arms 11a and 11b. As a result, the cable 3 wound around the cable drum 2 can be easily pulled out from the cable drum 2.

  Therefore, similarly to the first embodiment, it is not necessary to transfer the cable drum 2 from the hand forklift 1 to the cable feeder, and the work from the transportation of the cable drum 2 to the cable laying can be performed efficiently. .

  Furthermore, the first and second rollers 42 and 43 with which the flanges 5 a and 5 b of the cable drum 2 are in contact are inclined so as to approach each other as they proceed in the direction of the main body 7 of the hand forklift 1. Therefore, when the cable drum 2 rotates as the cable 3 is pulled out, the first and second rollers 42 and 43 are arranged so that the center of gravity of the rotating cable drum 2 is directed toward the first and second stoppers 45a and 45b. The cable drum 2 is moved.

  As a result, as shown in FIG. 8, the cable drum 2 rotating on the fork arms 11a and 11b is urged toward the first and second stoppers 45a and 45b, so that the end surface of the flange 5a is first. The second guide surfaces 46a and 46b are slidably contacted.

  Accordingly, the position of the cable drum 2 with respect to the fork arms 11a and 11b is determined with reference to the first and second stoppers 45a and 45b, and the rotating cable drum 2 is held in a stable posture at the fixed positions of the fork arms 11a and 11b. be able to. Therefore, the cable drum 2 can be prevented from falling off the fork arms 11a and 11b and the direction of the cable drum 2 can be prevented from being changed, and the cable 3 can be smoothly pulled out from the cable drum 2.

  9 and 10 disclose a third embodiment of the present invention.

  The third embodiment is a further development of the second embodiment, and the configuration of the hand forklift is the same as that of the second embodiment.

  In the third embodiment, motor rollers 51 are employed as the first and second rollers 42 and 43, respectively. The motor roller 51 includes a cylindrical roller body 52 that contacts the flanges 5 a and 5 b of the cable drum 2, and an AC motor 53 built in the roller body 52. The roller body 52 rotates in the direction around the axis by receiving torque from the AC motor 53.

  Further, the hand forklift 1 is equipped with a control box 54 for controlling the AC motor 53. The control box 54 is an example of a control unit, and is installed at the first end 12 of the fork arm 11b, for example. The control box 54 has a power cord 55. By connecting the power cord 55 to an AC power source (not shown), a power source voltage is supplied to the AC motor 53 via the control box 54. The control box 54 has a function of adjusting the rotation speed of the roller main body 52 and automatically stopping the roller main body 52 by changing a current value supplied to the AC motor 53, for example.

  According to the third embodiment, when the cable drum 2 is placed on the fork arms 11a and 11b, the outer peripheral surfaces of the flanges 5a and 5b of the cable drum 2 are the roller main body 52 of the motor roller 51. Is in contact with Therefore, when the roller body 52 is rotated by the AC motor 53, the cable drum 2 rotates and the cable 3 can be fed out from the cable drum 2.

  Moreover, by operating the control box 54 and adjusting the rotational speed of the roller body 52, the feeding speed and feeding length of the cable 3 can be freely changed.

  Further, when the cable drum 2 rotates following the rotation of the roller main body 52, the cable drum 2 is urged toward the first and second stoppers 45a and 45b as in the third embodiment. The end surface of the flange 5a slidably contacts the first and second guide surfaces 46a and 46b.

  Therefore, the position of the cable drum 2 with respect to the fork arms 11a and 11b is determined with reference to the first and second stoppers 45a and 45b, and the rotating cable drum 2 is held in a stable posture at the fixed positions of the fork arms 11a and 11b. can do.

FIG. 11 discloses a fourth embodiment of the present invention.
The fourth embodiment is different from the first embodiment in the configuration for connecting the second end portion of the fork arm, and the configuration of the hand forklift is the same as that in the first embodiment. .

  As shown in FIG. 11, the fork 8 is equipped with a connecting mechanism 61 that connects the second ends 13 of the fork arms 11a and 11b. The connection mechanism 61 includes first and second connection arms 62a and 62b.

  The first connecting arm 62a has one end provided with the bearing portion 63 and the other end provided with the engaging portion 64. The bearing portion 63 of the first connecting arm 62a is supported by the second end portion 13 of the fork arm 11a via a hinge shaft 65. The first connecting arm 62a is rotatable between an engagement position and a retracted position with the hinge shaft 65 as a fulcrum.

  In the engaged position, the first connecting arm 62a rotates toward the other fork arm 11b so as to be orthogonal to the longitudinal direction of the fork arm 11a, and abuts against a stopper 66 provided on the fork arm 11a. In the retracted position, the first connecting arm 62a is rotated from the engagement position toward the inner side surface 23b of the fork arm 11a, and approaches the inner portion 21a of the fork arm 11a. Further, the first connecting arm 62a is elastically biased toward the engagement position by the torsion coil spring 67 at all times.

  On the other hand, the second connecting arm 62b has one end where the bearing portion 69 is provided and the other end where the engaging portion 70 is provided. The bearing portion 69 of the second connecting arm 62b is supported by the second end portion 13 of the fork arm 11b via the hinge shaft 71. The second connecting arm 62b is rotatable between the engagement position and the retracted position with the hinge shaft 71 as a fulcrum.

  In the engaged position, the second connecting arm 62b rotates toward one fork arm 11a so as to be orthogonal to the longitudinal direction of the fork arm 11b, and abuts against a stopper 72 provided on the fork arm 11b. In the retracted position, the second connecting arm 62b is rotated from the engagement position toward the inner side surface 25b of the fork arm 11b and approaches the inner portion 21b of the fork arm 11b. Further, the second connecting arm 62 b is elastically biased toward the engagement position by the torsion coil spring 73 at all times.

  As shown in FIG. 11, the engaging portions 64 and 70 of the first and second connecting arms 62a and 62b are moved to the forks when the first and second connecting arms 62a and 62b are rotated to the engaging positions. The arms 11a and 11b mesh with each other and maintain this meshing state. As a result, the second end portions 13 of the fork arms 11a and 11b are connected via the first and second connection arms 62a and 62b.

  According to the fourth embodiment, when the second end 13 of the fork arms 11a and 11b is inserted under the cable drum 2, the lower end of the flange 5a of the cable drum 2 is connected to the first and second connecting arms. It hits 62a, 62b. Then, the first and second connecting arms 62a and 62b are pushed by the lower end portion of the flange 5a, so that the first and second connecting arms 62a and 62b are twisted coil springs as shown by a two-dot chain line in FIG. It automatically rotates from the engagement position toward the retracted position against the urging force of 67,73.

  Therefore, there is an advantage that the first and second connecting arms 62a and 62b do not hinder the work of inserting the fork arms 11a and 11b into the cable drum 2.

  The transport device according to the present invention is not limited to the hand-held hand forklift, but can be similarly applied to a self-propelled forklift equipped with a main body and an engine or motor for moving the fork up and down.

2 ... cable drum, 3 ... cable, 4 ... winding drum, 5a, 5b ... flange, 7 ... main body, 9 ... wheel, 11a, 11b ... fork arm, 27a, 27b, 28a, 28b ... roller (first roller , Second roller).

Claims (5)

A transporting device for transporting a cable drum, comprising: a winding drum around which a cable is wound; and a pair of flanges provided coaxially with the winding drum in between and having a larger diameter than the winding drum Because
A body having wheels;
A pair of fork arms that are supported by the body and extend laterally at intervals to support the cable drum from below;
A pair of rollers that are rotatably supported on the inner portions of the fork arm that face each other, extend in the longitudinal direction of the fork arm, and are arranged side by side in the longitudinal direction of the fork arm,
The cable drum is placed on the fork arm in a posture in which the axis of the winding drum portion is along the longitudinal direction of the fork arm so that the flange extends between the fork arms. the said rollers rotatably supports the cable drum on the fork arm by contact with the peripheral surface of the flange of the cable drum,
Wherein said roller adjacent in the longitudinal direction of each fork arm, being inclined in opposite directions with respect to the direction of the fork arm extends so as to be positioned between said roller center of gravity adjacent the cable drum that rotates A transporting device characterized in that the cable drum is moved.   2. The fork arm according to claim 1, wherein the fork arm has a corner portion defined by an upper surface and an inner side surface thereof, and the roller is disposed at the corner portion of the fork arm, and the periphery of the roller. Part of the surface protrudes from the upper surface of the fork arm.   3. The pair of fork arms according to claim 2, wherein the pair of fork arms are respectively positioned on opposite sides along the longitudinal direction of the fork arm with respect to the first end supported by the main body and the first end. And a second end portion, wherein the roller is positioned between the first end portion and the second end portion.   4. The transport device according to claim 3, further comprising a reinforcing metal fitting that connects the second end portions of the fork arms. In the description of any one of claims 1 to 4, wherein the fork arms, conveyors, characterized in that it comprises outriggers for each fall prevention.

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