JP2014214422A - Carrying carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying carriage excellent in safety, and excellent in versatility, for reducing a burden on an operator, by improving workability and handleability when executing carrying work of an article.SOLUTION: The carrying carriage 100 comprises a driving part 10 having a plurality of rotary bodies 11 movable along a track R by placing a carrying object W and rollable on the track R and an electric motor 13 being power means for rotatably driving the rotary bodies 11 via a chain 12, a cargo loading part 30 continuously provided on the side of a driving part 10 for placing the carrying object W, an auxiliary rotary body 31 for movably supporting the cargo loading part 30 along a corridor provided on the side of the track R and adjustment means capable of changing a relative position 40 in the vertical direction between the rotary bodies 11 of the driving part 10 and the auxiliary rotary body 31 of the cargo loading part 30. A power source carriage 50 movable along the track R is detachably connected to the driving part 10 via a connection mechanism 60 in a state of loading a storage battery 20 for operating the electric motor 13.

Description

  The present invention relates to a transport carriage used when transporting a replacement rail or other materials to a target site in repair work for a traveling rail of an overhead crane.

  In the replacement work of the traveling rail of the overhead crane, conventionally, when the replacement rail is transported to the construction site, a human-powered transport cart has been used. This transport cart can be moved along the existing traveling rails and walkways with the replacement rail mounted thereon, and 3 to 4 workers manually operate the transport cart with the replacement rail mounted thereon. By pushing or pulling on, the replacement rail is transported to the destination site.

  On the other hand, as a human-powered transport cart related to the present invention, for example, there is a “rail transport device” described in Patent Document 1. This "rail transport device" includes a rail carriage that can travel on an existing rail by a traveling wheel and loads an exchange rail, a leading carriage that is connected to the rail carriage and travels on the crane girder corridor along the side of the existing rail, Have The operator pushes the handwheel handle provided on the leading carriage by hand and causes the leading carriage and the rail carriage to travel along the existing rail, whereby the replacement rail loaded on the rail carriage can be transported to the target site.

Utility Model Registration No. 3151135

  The above-described conventional human-powered transport cart and the “rail transport device” described in Patent Document 1 are such that the cart travels along the existing rail by the operator's manual work and transports the rail. This is not only bad, but also the physical burden on the operator is large, and there is an unfavorable aspect from the viewpoint of safety.

  In addition, the “rail transport device” described in Patent Document 1 is a caterpillar type traveling wheel that has a large number of guide rollers and the like that travels on the crane girder corridor along the side of the existing rail. It is necessary to apply a great amount of force, and the physical burden on the worker is great. In addition, the caterpillar type traveling wheel has a large number of components and a complicated structure, so that the weight of the leading carriage is likely to increase, which causes an increase in the physical burden on the operator. Furthermore, since the caterpillar type traveling wheel is likely to interfere with traveling due to dust or scattered matter that is routinely present at the construction site, maintenance is also troublesome.

  Therefore, the problem to be solved by the present invention is that the workability and handleability when carrying an article is good, the burden on the operator can be reduced, the safety is excellent, and the versatility is also good. Is to provide a simple transport cart.

  The transport cart of the present invention is a transport cart that can move along a track with a transport object placed thereon, and includes a rotating body that can roll on the track and a power unit that rotationally drives the rotating body. Auxiliary rotation for movably supporting the loading unit along a corridor provided on the side of the track, and a loading unit connected to the side of the driving unit for placing the object to be transported And a height adjusting means capable of changing a vertical relative position between the rotating body of the driving unit and the auxiliary rotating body of the load unit.

  In such a configuration, if the object to be transported is placed on the transport carriage, the rotating body of the drive unit is rotationally driven by the power means, and the transport carriage is moved along the track, it depends on the human power of the operator. In addition, since it is possible to carry out the carrying work of the carrying object, the handleability and workability are improved, and the burden on the operator can be reduced. In addition, it is no longer necessary to perform the pressing (towing) operation of the carriage with an unreasonable posture (bent posture) in a confined space on the corridor, and the number of workers required for the conveyance work can be reduced, so that safety is improved. Is also excellent. Furthermore, by changing the vertical relative position between the rotating body of the drive section and the auxiliary rotating body of the loading section with the height adjustment means, it can accurately respond to the height difference between the existing track and the corridor that differs depending on the work site. Therefore, versatility is also good.

  Here, it is desirable to provide a clutch mechanism capable of releasing / returning power transmission from the power means to the rotating body of the drive unit.

  With such a configuration, when the rotating body of the drive unit becomes unable to be driven due to a failure of the power means or the like, the power transmission is released using the clutch mechanism and the rotating body of the drive unit can be freely rotated. By doing so, the transfer carriage can be moved by the operator's human power, so that it is possible to avoid a trouble that the transfer carriage is “stuck” on the track in the middle of the transfer path.

  Moreover, it is desirable to provide an electric motor and a power supply device for operating the motor as the power means.

  With such a configuration, the electric motor can be easily operated by supplying power from the power supply device without generating noise or exhaust gas, and forward / backward switching and speed control of the transport carriage can be easily and accurately performed. Can be done.

  As the power supply device, it is desirable that a power supply carriage that is movable along at least one of the track or the corridor with the drive unit in a state where a storage battery is mounted is detachably connected to the drive unit.

  With such a configuration, when the electric capacity of the storage battery decreases due to long-time transport work, the power supply carriage is disconnected from the drive section, and another power supply carriage equipped with the filled storage battery is connected to the drive section. Since the transfer work can be resumed, it is possible to avoid a decrease in efficiency due to the work interruption. In addition, if the mechanism which mounts a storage battery on a power supply trolley so that attachment or detachment is provided, when the electrical capacity of a storage battery falls, only a storage battery can be replaced | exchanged with the power supply trolley as it is.

  On the other hand, it is also possible to provide an auxiliary cart that can move along at least one of the track or the corridor along with the load portion while holding a part of the transport object placed on the load portion.

  With such a configuration, a part of an object to be transported that is difficult to hold only by the loading part (for example, a long material such as a rail, a bar, or a column) is moved along with the loading part. Since it can be transported in a stable state by holding it with a possible auxiliary carriage, not only the workability and safety are improved, but also versatility is enhanced.

  In addition, in order to lock the transport object placed on the load part, a clamp mechanism that can be engaged with and disengaged from the transport object from the side of the transport object via the upper side of the transport object is provided. You can also.

  With such a configuration, the conveyance object placed on the loading portion can be stably held by the clamp mechanism, which is effective in improving workability and safety. In addition, when the clamp mechanism is released, the upper space of the conveyance object on the loading part is in an open state (a state in which there is no blocking member), which hinders the work of unloading the conveyance object to the loading part. The handleability is also good.

  According to the present invention, it is possible to provide a transport cart that has good workability and handleability when performing the work of transporting articles, can reduce the burden on the operator, is excellent in safety, and has good versatility. it can.

It is a top view which shows the conveyance trolley which is embodiment of this invention. It is a partially omitted side view seen from the direction of arrow A in FIG. It is a partially-omitted side view seen from the arrow B direction in FIG. It is a partially-omitted side view seen from the arrow C direction in FIG. It is a partially-omission front view seen from the arrow D direction in FIG. It is a partially omitted rear view seen from the direction of arrow E in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 6, the transport carriage 100 of the present embodiment includes a drive unit 10, a loading unit 30, and a power supply cart 50, and a track with a transport target W placed on the loading unit 30. It can move along R. The drive unit 10 includes a plurality of rotating bodies 11 that can roll on the track R, an electric motor 13 that is a power unit that rotationally drives the rotating bodies 11 via a chain 12, and a power supply device (a power supply carriage 50 on which a storage battery 20 is mounted). ).

  A loading unit 30 for placing the object to be transported W is connected to the side of the drive unit 10, and the loading unit 30 can move the loading unit 30 along the corridor S provided on the side of the track R. And a height adjusting means 40 capable of changing the relative position in the vertical direction between the rotating body 11 of the driving unit 10 and the auxiliary rotating body 31 of the loading unit 30.

  Although not shown in the drawing, the drive unit 50 is held behind the power supply carriage 50 (on the side opposite to the drive unit 10 and the loading unit 30) while holding a part of the conveyance object W placed on the loading unit 30. 10 and an auxiliary cart that can move along the corridor S along with the loading unit 30. The auxiliary carriage (not shown) includes a loading member for placing a part of the conveyance object W and a rotating member that supports the loading member so as to be movable along the corridor S. It is not limited to.

  The power supply carriage 50 is connected to the battery mounting portion 50a detachably connected to the drive unit 10 via the connecting mechanism 60, the storage battery 20 mounted on the battery mounting portion 50a, and the side of the battery mounting portion 50a. Auxiliary loading part 50b. A plurality of rotating bodies 51 that can roll along the track R are respectively provided before and after the battery mounting portion 50a, and a plurality of rotating bodies that can roll along the corridor S on the lower surface side of the auxiliary loading portion 50b. 52 is provided. The storage battery 20 is detachably mounted on the battery mounting portion 50a, and a balance weight 53 is attached to the lower surface side of the auxiliary loading portion 50b.

  The drive unit 10 includes a clutch mechanism 15 capable of releasing and returning power transmission from the electric motor 13 to the rotating body 11. The electric motor 13 is a gear motor. A sprocket 16 is attached to an output shaft 14 of the electric motor 13 via a clutch mechanism 15, and a chain 12 is hung on a sprocket 18 and a sprocket 16 attached to a support shaft 17 of the rotating body 11. Yes. In addition, the drive unit 10 is provided with a switch 19a and a control panel 19b for operating forward, reverse and stop of the electric motor 13.

  As shown in FIGS. 1 to 3 and 5, the loading unit 30 is fixed to a horizontal support plate 32 on which the conveyance object W can be placed and a side edge portion of the horizontal support plate 32 near the driving unit 10. In order to lock the vertical support plate 33 and the transport target W placed on the horizontal support plate 32, the transport target W passes from the side of the transport target W (the side close to the drive unit 10) and above the transport target W. And a clamping mechanism 70 that can be engaged with and disengaged from the conveyance object W. The vertical support plate 33 of the loading unit 30 is detachably attached to the vertical fixing plate 21 erected near the loading unit 30 of the driving unit 10 using a plurality of male screws 34.

  The vertical support plate 33 is provided with a plurality of long holes 33a having a long diameter in the vertical direction, and the vertical fixing plate 21 is provided with a plurality of female screw holes 21a. The arrangement interval of the plurality of long holes 33a in the horizontal direction (the traveling direction X of the transport carriage) is substantially the same as the arrangement interval of the female screw holes 21a in the horizontal direction, and the plurality of female screw holes 21a have a predetermined interval. And arranged vertically. The loading portion 30 is detachably fixed to the driving portion 10 by passing through the long hole 33 a of the vertical support plate 33 and screwing the male screw 34 into the female screw hole 21 a of the vertical fixing plate 21.

  As described above, the vertical support plate 33 is provided with a plurality of long holes 33a having a long diameter in the vertical direction, and the vertical fixing plate 21 is provided with a plurality of female screw holes 21a at predetermined intervals in the vertical direction. . If the long hole 33a of the vertical support plate 33 is overlapped with any of the female screw holes 21a of the vertical fixing plate 21, and the male screw 34 is screwed into the female screw hole 21a through the long hole 33a, the vertical fixing is performed. The mounting height of the vertical support plate 33 and the horizontal support plate 32 with respect to the plate 21 is determined. In this way, by selecting one of the plurality of female screw holes 21a of the vertical fixing plate 21, overlapping with the long hole 33a of the vertical support plate 33, and screwing the male screw 34, the drive unit 10 The vertical relative position with respect to the loading portion 30 can be changed (adjusted).

  As described above, in the present embodiment, the plurality of elongated holes 33a are provided as the height adjusting means 40 capable of changing the relative position in the vertical direction between the rotating body 11 of the driving unit 10 and the auxiliary rotating body 31 of the loading unit 30. And a vertical fixing plate 21 having a plurality of female screw holes 21a, and a male screw 34 that can be screwed into the female screw hole 21a through the long hole 33a. In addition, since the adjustment screw 41 for sliding the vertical support plate 33 in the vertical direction along the vertical fixing plate 21 in the state where the male screw 34 is loosened, fine adjustment of the relative position is easy. .

  As shown in FIGS. 1 to 3 and 5, the clamp mechanism 70 includes a plurality of arms 36 a and 36 b that can be raised and lowered around a horizontal support shaft 35 provided on the vertical support plate 33, and tips of the arms 36 a and 36 b. A horizontal support shaft 37 rotatably supported on the side, a clamp member 38 suspended from the horizontal support shaft 37, and a hook portion 38a at the lower end of the clamp member 38 so as to be detachably hooked. And a locking portion 39 provided on the support plate 32.

  Here, the usage and function of the transport cart 100 will be described. As shown in FIGS. 1 and 2, the rotating body 11 of the driving unit 10 and the rotating body 51 of the battery mounting portion 50 a of the power supply carriage 50 are respectively placed on the track R, and the auxiliary rotating body 31 and the power supply carriage 50 of the loading section 30. When the rotating body 52 of the auxiliary loading portion 50b is placed on the corridor S provided on the side of the track R, the driving portion 10, the loading portion 30 and the power supply carriage 50 are set in a predetermined state. Moreover, when the conveyance target object W is a long material, according to the length, on the walkway S of the back of the power supply trolley 50 (opposite side of the drive part 10 and the loading part 30), the above-mentioned auxiliary trolley ( (Not shown).

  In the driving unit 10 and the loading unit 30, the vertical body relative position between the driving unit 10 and the loading unit 30 is adjusted by using the height adjusting means 40, so that the rotating body 11 of the driving unit 10 can move the track R. The auxiliary rotary body 31 of the loading unit 30 is set upright on the corridor S, and the horizontal support plate 32 is set in a horizontal state. In addition, since the height adjustment means (not shown) similar to the height adjustment means 40 is provided between the battery mounting portion 50a and the auxiliary loading portion 50b of the power supply carriage 50, the battery of the power supply carriage 50 is provided. The relative position in the vertical direction between the rotating body 51 of the mounting portion 50a and the rotating body 52 of the auxiliary loading portion 50b can be adjusted and set in an appropriate state.

  When the setting of the drive unit 10, the loading unit 30, the power supply carriage 50 and the auxiliary carriage (not shown) is completed, the arms 36a and 36b of the clamp mechanism 70 of the loading unit 30 are supported by the support shaft 37 as shown in FIG. And is moved upward to drive the drive unit 10. Thereby, since the upper part of the horizontal support plate 32 of the loading unit 30 is in an open state, the conveyance object W is placed on the horizontal support plate 32 of the loading unit 30. Moreover, when the conveyance target object W is an elongate member, the back part is mounted on the said auxiliary cart (not shown).

  Thereafter, the arms 36a and 36b of the clamp mechanism 70 are rotated in a direction opposite to that described above (a direction in which the arms 36a and 36b are laid down around the support shaft 37 toward the upper side of the horizontal support plate 32). After W is covered with the arms 36a and 36b, the hook 38a at the lower end of the clamp member 38 is hooked on the engaging portion 39, and then the tightening screw 38b screwed to the upper end of the clamp member 38 is turned. By moving the hook portion 38a together with the clamp member 38, the conveyance object W is pressed and fixed by the arms 36a and 36b. When a gap is generated between the conveyance object W and the arms 36a and 36b, it is desirable to interpose a cushioning material such as a spacer material (not shown) made of wood or synthetic resin in the gap. In addition, it is preferable that the conveyance object W placed on the auxiliary carriage (not shown) is bound using a binding means such as a wire or a chain.

  On the other hand, as shown in FIGS. 2 and 6, the auxiliary loading portion 50 b of the power supply carriage 50 is located below the horizontal support plate 32 of the loading portion 30, so that the conveyance target is located above the auxiliary loading portion 50 b. The object W is kept in a state of being separated (floated) from the auxiliary loading portion 50b. That is, as shown in FIG. 6, the conveyance object W placed on the loading part 30 is not in contact with the auxiliary loading part 50 b of the power supply carriage 50, so the load of the conveyance object W is loaded on the auxiliary loading part 50 b. It has not been.

  When loading and fixing of the object to be transported W to the loading unit 30 and the auxiliary cart (not shown) 50 is completed, when the electric motor 13 is operated by operating the switch 19a, the rotating body 11 of the driving unit 10 rotates, Since the transport cart 100 and the auxiliary cart (not shown) move along the track R, the transport target W can be transported to the destination.

  Since the transport carriage 100 includes the drive unit 10 that travels along the track R with the electric motor 13 that is rotated by the power supply device 20, the transport work of the transport target W can be performed without depending on the human power of the operator. it can. For this reason, an operator's burden can be reduced and handling property and workability | operativity are also favorable. In addition, unlike a conventional transfer operation, in a narrow space on the corridor S, it is not necessary for a plurality of workers to perform the pressing (towing) operation of the rickshaw in an unreasonable posture (bent posture). The number of workers required for the operation can be reduced, and the safety is excellent.

  Further, when there is a vertical step between the track R and the corridor S, the vertical adjustment between the rotating body 11 of the driving unit 10 and the auxiliary rotating body 31 of the loading unit 30 is performed using the height adjusting means 40. Since the position can be changed and set to an appropriate state, the transport cart 100 can be used without being affected by the step. Therefore, it is possible to carry out the transfer work safely on the object to be transferred in an appropriate manner corresponding to the height difference between the existing track R and the corridor S, which is different for each work site, and the versatility is also good.

  On the other hand, as shown in FIGS. 1, 4, and 5, power transmission can be released and returned between the output shaft 14 of the electric motor 13 and the sprocket 16 that drives the rotating body 11 via the chain 12. A clutch mechanism 15 is provided. Therefore, when the motor 13 does not operate and the rotating body 11 of the drive unit 10 becomes unable to be driven due to a failure of the motor 13 or a reduction in the power of the storage battery 20, the power transmission can be canceled using the clutch mechanism 15. For example, the rotating body 11 of the drive unit 10 is in a freely rotatable state, and the transport carriage 100 can be moved by the operator's human power. Therefore, it is possible to avoid a trouble such that the carriage 100 is “stuck” on the track R in the middle of the conveyance path due to the failure of the electric motor 13 or the power reduction of the storage battery 20.

  In the present embodiment, since the motor 13 and the power supply device (the power supply carriage 50 equipped with the storage battery 20) for operating the motor 13 are provided as power means for the drive unit 10, the conveyance carriage is generated without generating noise or exhaust gas. 100 can be easily operated, and forward / backward switching and speed control of the transport carriage 100 can be easily and accurately performed.

  The storage battery 20 is detachably mounted (connectable / detachable) to the drive unit 10, and is detachably mounted on the battery mounting unit 50 a of the power supply carriage 50 that moves together with the drive unit 10. Therefore, when the electric capacity of the storage battery 20 is reduced by carrying the transfer work for a long time, if the storage battery 20 is detached from the battery mounting portion 50a and replaced with another charged storage battery 20, the transfer work is quickly resumed. It is possible to avoid a decrease in efficiency due to work interruption.

  When the electric capacity of the storage battery 20 decreases, the connection mechanism 60 is released, and the power supply carriage 50 in which the storage battery 20 is mounted is separated from the drive unit 10 as it is, and another charged battery is mounted. It can be replaced with a power truck (not shown) and the operation can be resumed.

  As described above, the transport carriage 100 according to the present embodiment is movable along the track R and the corridor S along with the loading unit 30 in a state where a part of the conveyance object W placed on the loading unit 30 is held. An auxiliary cart (not shown) is provided. Accordingly, even when the object to be transported W is a long material that is difficult to hold only by the loading part 30 (for example, rails, bars, pillars, etc.), it can be transported stably, and workability and safety are improved. And excellent versatility. When the object to be transported is a long material that cannot be held by the loading unit 30 and one auxiliary cart (not shown), a similar auxiliary cart (not shown) is provided after the auxiliary cart (not shown). 1) or a plurality of them can be arranged to hold the conveyance object. Further, in the present embodiment, the track R is a traveling rail laid on the girder gallery S of an overhead crane deployed in a factory building or the like, but is not limited thereto.

  Further, in the transport carriage 100, the transport object W placed on the loading unit 30 is locked, so that the transport object W is transported from the side of the transport object W (the drive unit 10 side) via the upper part of the transport object W. Since the clamping mechanism 70 that can be engaged with and disengaged from the object W is provided, the conveyance object W placed on the loading unit 30 can be stably held by the clamping mechanism 70. For this reason, it is excellent in workability | operativity and safety | security, When the clamp mechanism 70 is cancelled | released, the upper space of the conveyance target object W on the loading part 30 can be made into an open state (state without the member to interrupt | block). Therefore, the work of unloading the object W to be loaded onto the loading unit 30 is not hindered, and the handleability is good.

  Since the transport cart 100 is not limited to the above-described usage, a state in which a part of the transport object W is placed on the auxiliary loading part 50b of the power supply truck 50 (a part of the load of the transport object W is borne by the auxiliary load part 50b). In a state in which the transfer work is performed. When the object to be transported is a relatively short material or the like, the auxiliary cart is not used, only the driving unit 10 and the loading unit 30 are used, or the driving unit 10, the loading unit 30 and the power supply cart 50 are used. The conveyance work can also be performed using the auxiliary loading unit 50b.

  The transport cart 100 includes the electric motor 13 and a power supply device (a power supply cart 50 equipped with the storage battery 20) for operating the motor 13 as power means. However, since the present invention is not limited to this, the power supply cart 50 is omitted and the storage battery 20 is installed. It can also be set as the structure mounted in the drive part 10 and the loading part 30, or can be set as the structure which electrically feeds the electric power trolley | bogie 50 to the electric motor 13 via a cable from power supply equipment. Further, an engine-driven generator (not shown) can be used in place of the storage battery 20, and an engine (not shown) operating with liquid fuel or gaseous fuel can be used as power means.

  In addition, the conveyance trolley 100 which concerns on embodiment demonstrated based on FIGS. 1-6 shows an example of this invention, and the trolley | bogie of this invention is not limited to the conveyance trolley 100 which concerns on embodiment mentioned above.

  The transport cart of the present invention is used in the steel industry, metal processing industry or machine industry as a transport means for transporting replacement rails or other materials to the target site when repairing the traveling rail of an overhead crane. It can be widely used in such fields.

DESCRIPTION OF SYMBOLS 10 Drive part 11,51,52 Rotating body 12 Chain 13 Electric motor 14 Output shaft 15 Clutch mechanism 16, 18 Sprocket 17 Support shaft 19a Switch 19b Control panel 20 Storage battery 21 Vertical fixing plate 21a Female screw hole 30 Loading part 31 Auxiliary rotating body 32 Horizontal support plate 33 Vertical support plate 33a Long hole 34 Male screw 35, 37 Horizontal support shaft 36a, 36b Arm 38 Clamp member 38a Hook part 38b Tightening screw 39 Locking part 40 Height adjusting means 41 Adjustment screw 50 Power supply truck 50a Battery Mounting portion 50b Auxiliary loading portion 53 Balance weight 60 Connection mechanism 100 Transport cart R Track S Walk W Transport object

Claims (6)

  A transport carriage that can move along a track with a transport target placed thereon, and a drive unit that includes a rotating body that can roll on the track and a power unit that rotationally drives the rotating body, and the transport target A loading portion that is continuously provided to the side of the driving portion for placing an object, an auxiliary rotating body that movably supports the loading portion along a corridor provided on the side of the track, and A transport carriage comprising: a height adjusting means capable of changing a vertical relative position between the rotating body and the auxiliary rotating body of the load section described above.   The transport carriage according to claim 1, further comprising a clutch mechanism capable of releasing / returning power transmission from the power means to the rotating body of the drive unit.   The conveyance cart according to claim 1 or 2, wherein an electric motor and a power supply device for operating the electric motor are provided as the power means.   The conveyance cart according to claim 3, wherein a power supply carriage that is movable along at least one of the track or the corridor with the drive unit in a state where a storage battery is mounted is detachably connected to the drive unit as the power supply device. .   The auxiliary carriage according to claim 1, further comprising an auxiliary carriage that is movable along at least one of the track or the corridor along with the load portion in a state where a part of the conveyance object placed on the load portion is held. The conveyance trolley in any one.   A clamp mechanism capable of being engaged with and disengaged from the transport object from a side of the transport object via the upper side of the transport object in order to lock the transport object placed on the load portion. Claim | item 1-5 conveyance trolley | bogie in any one.

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