JPH0614193U - Cargo handling vehicle - Google Patents

Abstract

(57) [Summary] [Structure] The reach stacker 1 raises the clamp device 20 and causes the clamp arm 25 to move in a non-clamping state to move the clamp device 20 above the transported object 35.
Can be located. After the clamp device 20 is lowered to make the engaging member 28 of the clamp arm 25 correspond to the transported object 35, the clamp arm 25 is clamped to position the engaging member 28 below the lower surface of the transported object 35. By lifting the clamp device 20, the transported object 35 can be lifted, and by operating the clamping device 30, the transported object 35 can be clamped in the vertical direction. [Effect] A reach height can be obtained by using the reach stacker, and the object to be transported can be locked by vertically holding it by the holding device, so that transportation and installation can always be performed safely, quickly and accurately. You can do it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cargo handling vehicle used for carrying and installing a large bridge or an I-girder, for example.

[0002]

[Prior art]

 Conventionally, large forklifts or wire-mounted cranes have been used to transport and install bridges and I girders.

[0003]

[Problems to be solved by the device]

 Among the above conventional types, the forklift type does not allow sufficient lifting height (distance) during transportation or installation, so it cannot be installed in a high place, and due to vibration, etc. It was misaligned, and in the worst case there was a risk that the transported object would slip off the fork, and its use was avoided. On the other hand, the crane type can provide a sufficient lifting height, but the hanging posture is unstable due to the wire hanging, and it was a dangerous work especially under strong wind conditions. Therefore, in both conventional types, the transportation and installation work of bridges and I girders could not be performed safely, quickly and accurately.

The object of the present invention is to provide a cargo handling vehicle that can carry, install, and work on bridges and I-girders, etc., always safely, quickly, and accurately while maintaining a sufficient lifting height. is there.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, in the cargo handling vehicle of the first invention, a clamp device is swingably attached to an elevating part on the vehicle body side, and the clamp device is connected to the elevating part side to a frame and to this frame. A plurality of pairs of left and right clamp arms attached so as to be movable back and forth, and a plurality of engaging members provided at the lower ends of these clamp arms and capable of being engaged with and disengaged from below the object to be conveyed. A clamping device for clamping the transported object from above and below is provided on the frame side.

Further, in the cargo handling vehicle according to the second aspect of the present invention, one part of the turning device is swingably attached to the elevating part on the vehicle body side, and the clamp device is attached to the other part of the turning device so as to be horizontally movable. , A frame connecting this clamp device to the vehicle body, a pair of front and rear clamp arms attached to the frame so as to be movable back and forth, and a plurality of pairs of left and right clamp arms. A holding device is provided on the frame side, the holding device including an engagement member that can be engaged and disengaged, and that holds the transported object in the vertical direction by the engagement member group.

In the cargo handling vehicle according to the third aspect of the invention, the clamp device is attached to the tip of the front beam of the reach stacker so as to swing back and forth. Further, in the cargo handling vehicle according to the fourth aspect of the present invention, the clamp device is attached to the fork of the forklift so as to be swingable back and forth.

In the cargo handling vehicle according to the fifth aspect of the present invention, the clamping device is provided with a clamping member that is fixed to the lower end of the clamp arm, and a flapping member that is brought into contact with and separated from the upper portion of the transported object that is engaged and supported by these engaging members. It is composed of a stabilizer installed in the room.

Further, in the cargo handling vehicle according to the sixth aspect of the present invention, the clamping device is provided with an engaging member provided on the clamp arm via an elevating / lowering device, and an upper portion of the transported object lifted by these engaging members is brought into contact with each other. It is composed of a holding plate fixed to the frame.

In the cargo handling vehicle according to the seventh aspect of the invention, the engaging member is provided with the detachable sheath member. Further, in the cargo handling vehicle according to the eighth aspect of the present invention, a removable spacer is provided on the upper member of the holding device.

In the cargo handling vehicle according to the ninth aspect of the present invention, the engagement member is provided with the presence load detection device for detecting the engagement support of the transported object.

[0012]

[Action]

 According to the configuration of the first invention described above, the clamp device is lifted through the elevating part on the vehicle body side, and the clamp arms are moved in the non-clamping (opening) state to move above the transported object. A clamping device may be located at. Then, the clamp device is lowered to make the engaging members of each clamp arm correspond to the object to be transported, and then each clamping arm is clamped (closed) to position the engaging member below the lower surface of the object to be transported. Let Then, the object to be conveyed can be lifted by raising the clamp device, and the object to be conveyed can be vertically clamped by operating the clamping device at that time.

After that, the transported object can be transported to the intended place by moving the vehicle body, and then the transported object can be lowered by lowering the clamp device. Then, the clamping operation by the clamping device is released, and each clamping arm of the clamping device is operated in the opposite manner to the above, that is, the clamping operation is performed, and then the clamping arm is lifted to complete the intended transportation work.

Further, according to the configuration of the second aspect of the present invention, by rotating the clamp device by the rotating device and moving the clamp device in the left-right direction, the orientation of the clamp device and the position in the left-right direction can be corrected. .

According to the configuration of the third invention, a reach stacker is used, and a sufficient lifting height can be obtained. Further, according to the configuration of the fourth invention, stable transportation work can be performed by operating the fork.

According to the structure of the fifth aspect of the invention, the movable part of the stabilizer is brought into contact with the transported object lifted through the engaging member by the upward movement of the clamp device from above so that the transported object is transported. Can be clamped from above and below.

Further, according to the structure of the sixth aspect of the present invention, after the object to be conveyed is lifted through the engaging member by the elevation of the clamp device, the engaging member is elevated by the elevating device, whereby the upper surface of the object to be conveyed is raised. Can be brought into contact with the holding plate from below, so that the object to be transported can be vertically clamped.

Further, according to the configuration of the seventh invention, by mounting the sheath member, it is possible to handle a transported object having a narrow width in the front-rear direction. Further, according to the configuration of the eighth invention, by mounting the spacer, even a transported object having a low vertical height can be handled with a sufficient clamping force.

According to the configuration of the ninth aspect of the invention, it is possible to quickly confirm that the transported object is engaged and supported by the engaging member.

[0020]

【Example】

 A first embodiment of the present invention will be described below with reference to FIGS. A reach stacker 1, which is an example of a cargo handling vehicle, has a front wheel 3 and a rear wheel 4 on a vehicle body 2 and a driver's seat 5. The vehicle body 2 is provided with a base boom (outer boom) 7 that is vertically swung by a lift cylinder (cargo handling cylinder) 6, and the base boom 7 has a retracting device (not shown). A front boom (inner boom) 8 that can freely move in and out by the operation of is provided. Here, the front boom 8 is an example of an elevating part.

A bracket 10 is attached to the free end of the front boom 8 via a lateral pin 9 so as to be swingable back and forth. One end of a turning device 11 is attached to the bracket 10, and the turning device 11 is turned. A support frame 12 is attached to the other part of the device 11. The support frame 12 is composed of a mounting member 13 mounted to the other part of the swivel device 11, and a fixed yoke 14 below the mounting member 13 that forms a square tube whose left and right sides are open. A clamp device 20 is provided using 14.

That is, the frame 21 of the clamp device 20 is formed into a flat frame shape by a plurality of left and right members and a plurality of front and rear members, and the left and right spreaders 23 provided between the front and rear members on both sides are provided with the support frame 12 described above. It is inserted in the fixed yoke 14 of. Here, the spreader 23 is placed on a slide plate (not shown) provided on the fixed yoke 14 and is movable in the left and right directions. And the spreader 23.

The frame 21 is provided with a plurality of pairs of clamp arms 25 in the front-rear pair and in the left-right direction. That is, the upper ends of the clamp arms 25 are connected to both ends of the front and rear members on both sides of the frame 21 via the pins 26 in the left-right direction, and these clamp arms 25 can swing back and forth around the pins 26 (open and close freely). Becomes A cylinder 27 for swinging the clamp arm 25 back and forth is provided between the frame 21 and the clamp arm 25. Each clamp arm 25 is of an engagement / lifting type, and an engagement member 28 that is engageable and disengageable from below is continuously provided from a lower end of the clamp arm 25 toward a bridge 35, which is an example of a transported object. ing.

The frame 21 is provided with a sandwiching device 30 that sandwiches the bridge 35 from above and below with the group of engaging members 28. That is, stabilizers 31 are provided on the outer surfaces of the front and rear members on both sides of the frame 21, respectively, and the stabilizer 31 and the group of engaging members 28 constitute a holding device 30. The stabilizer 31 is composed of a cylinder 32 mounted downward on the outer surface of the front and rear members on both sides of the frame 21, and a pressing plate 33 attached to the lower end of its piston rod. The pressing plate 33 is located above the bridge 35. Can be contacted and separated freely.

Next, the operation of the first embodiment will be described. For example, the bridge 35 to be transported is placed on a plurality of supports 36 as shown in FIG. In order to transport the bridge 35 in such a state and load it on a transportation vehicle or ship, or install it on a pier, first, the lift cylinder 6 swings the base boom 7 upward and the front boom 8 moves. To extend. As a result, the reach stacker 1 can be run while the clamp device 20 is raised, and the clamp device 20 can be positioned above the bridge 35 as shown by the phantom line in FIG.

Before and after this, each clamp arm 25 is swung outwardly around the pin 26 by the cylinder 27, whereby a non-clamping posture (opening motion) is obtained. In this state, while swinging the base boom 7 downward, the front boom 8 is contracted or the reach stacker 1 is moved backward, the clamp device 20 is lowered, and as shown by the phantom line in FIG. Position each clamp arm 25 on the outside of both sides of the bridge 35. At this time, the side of the clamp device 20 is automatically and automatically maintained in the drooping posture by swinging back and forth around the lateral pin 9.

In this way, each clamp arm 25 is made to correspond to the outside of both sides of the bridge 35, each engaging member 28 is made to correspond to the lower surface of the bridge 35, and then the cylinder 27 is first operated in the reverse operation to the above. , Swing each clamp arm 25 inwardly around the pin 26. As a result, as shown by the solid line in FIG. 3, each engaging member 28 is positioned below the lower surface of the bridge 35 to be in the clamp posture (closed movement).

At that time, the direction of the clamp device 20 is adjusted by the turning device 11 so that the clamp motion is performed correctly, and the side shift cylinder 24 moves the spreader 23 to move the clamp device 20 in the left-right direction. The position of is adjusted.

Then, while swinging the base boom 7 upward, the front boom 8 is extended or the reach stroller 1 is advanced to raise the clamp device 20, so that each engaging member 28 is brought to the lower surface of the bridge 35. Engage from below and lift this bridge 35. Next, the cylinder 32 of the stabilizer 31 is extended to lower the pressing plate 33, and the pressing plate 33 is brought into contact with the upper surface of the bridge 35, so that the pressing plate 33 and the engaging member 28 move the bridge 35 upward and downward. It can be pinched and fixed from the direction.

By moving the reach stacker 1 in this state, the bridge 35 can be transported to a desired place. At that time, the clamping device 30 clamps and fixes a suitable position of the bridge 35. Therefore, the bridge 35 is not displaced with respect to the clamp device 20, and the bridge 35 does not sway (tilt) around the lateral pin 9 more than necessary.

After being transported to a desired place, first, the cylinder 32 of the stabilizer 31 is contracted to raise the pressing plate 33, and the pressing plate 33 is separated from the upper surface of the bridge 35. The pinching by the engaging member and the engaging member can be released. Then, the clamp device 20 is lowered by the operation as described above, and the bridge 35 is landed on the intended bridge pier or on the bridge 35 already lowered as shown in FIG. At this time, the direction of the clamp device 20 is adjusted by the turning device 11, and the lateral position of the clamp device 20 is adjusted by moving the spreader 23 by the side shift cylinder 24, so that the direction and position of the bridge 35 are adjusted. You can correct the gap and take it down.

In this way, after the bridge 35 is lowered to a predetermined position, first, each clamp arm 25 of the clamp device 20 is operated in the opposite manner to the above, that is, the clamp operation is performed, and then the clamp arm 25 is raised to perform the desired work. To finish.

In the first embodiment, the swivel device 11 and the spreader 23 are provided between the front boom 8 and the clamp device 20, but in the first invention, the clamp device 20 is connected to the front boom 8. The structure may be connected or the clamp device 20 may be connected to the turning device 11.

In the first embodiment, the cylinder 32 is used to operate the stabilizer 31, but this may be a screw type driven by a hydraulic motor. Further, although the clamp arm 25 is directly connected to the frame 21, this may be such that the frame 21 side is a telescopic type in the left-right direction, and the distance between the clamp arms 25 in the left-right direction can be freely changed in the longitudinal direction of the bridge 35.

When the pressing plate 33 in the stabilizer 31 descends as described above, a sensor detects that the pressing plate 33 is in contact with the upper surface of the bridge 35, and the hydraulic pressure is cut by the hydraulic solenoid based on the detection, It can be stopped automatically. Further, based on the same principle, the closing movement (opening movement) of the clamp arm 25 can be automatically stopped by the action of the sensor so as not to close the clamp arm 25 too much.

FIG. 5 shows a second embodiment of the present invention. That is, the clamp arm 25 is composed of an outer arm portion 25A connected to the frame 21 and an inner arm portion 25B fitted in the outer arm portion 25A so as to be vertically movable and having an engaging member 28 attached to the lower end thereof. A cylinder 40, which is an example of a lifting device, is provided between the outer arm portion 25A and the inner arm portion 25B. Brackets 41 are hung from both lower surfaces of front and rear members on both sides of the frame 21, and a holding plate 42 is fixed to the lower ends of these brackets 41.

A sandwiching device 30 is configured by the above-described vertically movable engaging member 28, fixed holding plate 42, and the like. That is, the bridge 35 is lifted by the engaging member 28 that rises due to the contracting movement of the cylinder 40, and the upper surface of the bridge 35 that is brought into contact with the holding plate 42 causes the bridge 35 to rise, as indicated by the phantom line in FIG. Will be clamped from above and below.

It should be noted that the structure having the stabilizer 31 and the structure of the clamp arm 25 including the outer arm portion 25A and the inner arm portion 25B may be combined, and in this case, it is possible to deal with a transported object having a high vertical height. You can

6 and 7 show a third embodiment of the present invention. That is, when the I-girder 37, which is another example of the object to be conveyed, is conveyed, if the width of the I-girder 37 in the front-rear direction is shorter than the distance between the front ends of the engaging members 28, the detachable sheath can be attached to the engaging member 28. A member 45 is provided. That is, the tongue and groove member 45 is formed so that it can be fitted into the engaging member 28 from the inside, and the outer end side of the engaging member 28 can be connected to the connecting hole 29 in the left-right direction formed in the engaging member 28. Forming hole 46.

The above-described connection of the sheath member 45 can be performed by fitting the sheath member 45 into the engaging member 28 from the inside and inserting the connecting pin 48 between the aligned connecting holes 29 and 46. It should be noted that the sheath member 45 may be provided with a protruding portion 47 for preventing the width deviation, as shown by the phantom line in FIGS. 6 and 7.

FIG. 8 shows a fourth embodiment of the present invention. In other words, when handling a low-height object such as an I-girder 37 and the pressing plate 33 cannot be pressed with the stroke of the cylinder 32 in the stabilizer 31, the pressing plate 33, which is the upper member of the clamping device 30, cannot be pressed against the pressing plate 33. The spacer 50 is detachably attached. On the upper part of the spacer 50, there is a fixed locking portion 51 that can be engaged and disengaged from one side with respect to the pressing plate 33, and a movable part that can be engaged and disengaged from the other side with respect to the pressing plate 33 by swinging. An engaging portion 52 is provided, and a lower portion thereof is an abutting portion 53 for an object to be transported.

According to the fourth embodiment, by mounting the spacer 50 on the pressing plate 33, a sufficient gripping force is expected within the stroke range of the cylinder 32 even if the object is a low object to be transported. You can

FIG. 9 shows a fifth embodiment of the present invention. That is, the presence detection device 60 for detecting the engagement support of the transported object is provided at the engagement member 28. The presence detection device 60 includes a lever body 62 that is vertically swingably attached via a pin 61, a spring 63 that biases a sensing portion 62a formed at the tip of the lever body 62 to move up, and A stopper 64 that restricts the sensing portion 62a from projecting a predetermined amount with respect to the upper surface of the coupling member 28, and an operation formed at the rear end of the lever body 62 when the lever body 62 is swung against the spring 63. The sensor 62 is operated by the section 62b.

According to the fifth embodiment, when the engaging member 28 is engaged with the lower surface of the bridge 35 from below, for example, the engaging force causes the lever body 62 to swing against the spring 63, and the operation is performed. The part 62b operates the sensor 65, so that the presence of the cargo can be detected. Then, the stabilizer 31 may be configured to be operated by the load detection signal.

FIG. 10 shows a sixth embodiment of the present invention using a forklift 70 which is another example of a cargo handling vehicle. That is, an outer mast 73 connected to the vehicle body 71 and tiltable by the tilt cylinder 72 is provided, and an inner mast 76 that can be raised and lowered through the lift cylinder 74 and the chain 75 is provided to the outer mast 73. There is.

A reverse fork 78, which is an example of an elevating part, is attached to a carriage 77 provided on the inner mast 76, a hanger body 79 is externally fitted to the reverse fork 78, and integrated with a stop pin 80. Further, a bracket 10 is attached to the lower surface of the hanger body 79 via a horizontal pin 9 so as to be swingable back and forth.

According to the sixth embodiment, by raising and lowering the reverse fork 78, the clamp device 20 can be raised and lowered via the turning device 11 and the like. In the above-mentioned embodiment, the bridge 35 and the I-girder 37 are shown as the objects to be transported, but they can handle various articles such as floor boards for bridges and long objects for construction.

[0048]

[Effect of device]

 According to the first aspect of the invention having the above-mentioned configuration, the object to be conveyed can be locked by vertically holding it by the holding device so that the object to be conveyed or installed can always be safely, quickly and accurately carried. it can.

Further, according to the configuration of the second aspect of the present invention, the orientation of the clamp device and the position in the left-right direction can be corrected, and the object to be transported can be always lifted and installed accurately. Further, according to the configuration of the third aspect of the present invention, it is possible to obtain a sufficient lifting height by using the reach stacker.

Further, according to the configuration of the fourth invention, it is possible to always carry out stable transportation work by operating the fork. Further, according to the configurations of the fifth and sixth inventions, it is possible to reliably reliably hold the transported object in the vertical direction.

Further, according to the configuration of the seventh aspect of the invention, it is possible to easily and reliably handle the transported object having a narrow width in the front-rear direction by the sheath member. Further, according to the structure of the eighth aspect of the present invention, the spacer can easily handle an object having a small vertical height with sufficient clamping force.

Further, according to the configuration of the ninth aspect, it can be confirmed that the transported object is engaged and supported, and the next operation can be swiftly performed based on the detection.

[Brief description of drawings]

FIG. 1 is a perspective view of a cargo handling vehicle showing a first embodiment of the present invention.

FIG. 2 is a front view of the same cargo handling vehicle.

FIG. 3 is a side view of the same cargo handling vehicle.

FIG. 4 is a side view of the same cargo handling vehicle at the time of unloading work.

FIG. 5 is a side view of the clamp device portion according to the second embodiment of the present invention.

FIG. 6 is a side view of the clamp device portion according to the third embodiment of the present invention.

FIG. 7 is a side view of a portion using the same sheath material.

FIG. 8 is a side view of a portion using a spacer according to a fourth embodiment of the present invention.

FIG. 9 is a side view of the portion in which the presence detection device is arranged, showing a fifth embodiment of the present invention.

FIG. 10 is a perspective view of another cargo handling vehicle showing a sixth embodiment of the present invention.

[Explanation of symbols]

 1 Reach stucker (cargo handling vehicle) 7 Base boom 8 Front boom (elevating part) 9 Left-right direction pin 11 Swivel device 14 Fixed yoke 20 Clamp device 21 Frame 23 Spreader 24 Side shift cylinder 25 Clamp arm 25A Outer arm part 25B Inner arm Part 26 Pin 27 Cylinder 28 Engaging member 30 Clamping device 31 Stabilizer 33 Presser plate 35 Bridge (transported object) 37 I-girder (transported object) 40 Cylinder (lifting / lowering device) 42 Holding plate 45 Sheath member 50 Spacer 60 Load detection device 62 Lever body 65 Sensor 70 Forklift (cargo handling vehicle) 77 Carriage 78 Reverse fork (elevating part) 79 Hanger body

Claims (9)

[Scope of utility model registration request] 1. A clamp device is attached to an ascending / descending portion on a vehicle body side such that the clamp device can swing back and forth, and the clamp device is connected to the ascending / descending portion side. A clamping device configured by a pair of clamp arms and an engaging member that is provided at the lower ends of the clamp arms and that can be engaged with and disengaged from the transported object from below, and that clamps the transported object in the vertical direction by the engaging member group. Is provided on the frame side. 2. One of the turning devices is swingably attached to the elevating part on the vehicle body side, and the clamp device is movably attached to the other part of the turning device in the left-right direction. A frame coupled to the frame, a pair of front and rear clamp arms attached to the frame so as to be movable back and forth, and a plurality of pairs of left and right clamp arms, and an engagement member provided at the lower ends of the clamp arms and capable of being engaged with and disengaged from below the object to be conveyed. A cargo-handling vehicle comprising a clamping device configured to clamp an object to be conveyed from above and below by the engaging member group on the frame side. 3. The cargo handling vehicle according to claim 1, wherein a clamp device is attached to the tip of the front beam of the reach stacker so as to be swingable back and forth. 4. The cargo handling vehicle according to claim 1, wherein a clamp device is attached to a fork of a forklift truck so as to be swingable back and forth. 5. The holding device comprises an engaging member fixed to a lower end of a clamp arm, and a stabilizer provided on a frame so as to come into contact with and separate from an upper portion of a transported object engaged and supported by these engaging members. The cargo handling vehicle according to claim 1 or 2, characterized in that. 6. The holding device is composed of an engaging member provided on a clamp arm via an elevating / lowering device, and a holding plate fixed to a frame so that an upper portion of a transported object lifted by the engaging member comes into contact with the holding member. The method according to claim 1 or 2, characterized in that
The listed cargo handling vehicle. 7. The cargo handling vehicle according to claim 1, wherein the engaging member is provided with a detachable sheath. 8. The cargo handling vehicle according to claim 1, wherein the upper member of the holding device is provided with a detachable spacer. 9. The cargo handling vehicle according to claim 1, wherein the engagement member is provided with a presence detection device for detecting engagement support of the transported object.