JPH03132439A - Container handling vehicle - Google Patents

Abstract

PURPOSE:To lower the whole height and simplify hydraulic piping by improving a column device in a cargo handling vehicle provided with vertically movable carrier side connecting members at the column device longitudinally movable on a frame so as to enable the unloading of containers. CONSTITUTION:In a container handling vehicle 45, a column device 51 is provided in the longitudinally movable state on a sub-frame 47 provided longitudinally on a chassis frame 46, and a carrier side upper connecting member 61 and a carrier side lower connecting member 91 are elevatingly provided at the rear parts of a pair of bilateral columns 55 in the column device 51. In this case, a hydraulic motor 59 is provided on the bottom plate 80 of the column device 51, and a sprocket 57 is provided at the shaft of the hydraulic motor 59. Sprockets 54, 56 are further provided in the front and rear positions of the sprocket 57, on the upper side level of the sub-frame 47, and a chain 58 is wound onto these sprockets 54, 56, 57. The both ends of this chain 58 is fixed at the front and rear parts of the sub-frame 47 so as to enable the longitudinal movement of the column device 51.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a container handling vehicle that loads and unloads containers using a handling arm.

<Prior Art> Conventionally, there is a container handling vehicle as shown in FIG. 9. This container handling vehicle +45 has sub-frames 147, 1 made of channel steel on a chassis frame 146.
47 are attached parallel to each other in the front-rear direction with the grooves facing inward. A column device 151 is provided on the sub-frames 147, 147 so as to be movable in the front and rear directions (not shown by the arrow X). This column device 151 is a Zabu frame! 4
7. Slide pad 152 on the top side of 147 from above and below.
．． 152 and slide along the upper sides of the sub-frames 147, 147.

The column device 151 is a column 1 made of a pair of channel steel.
55, 155, and the lower ends of the columns 155, 155 are connected by a bottom plate (not shown). This bottom plate is fixed to a chain 158 that wraps around sprockets 156 and 157 provided at the front and rear portions of the subframes 147° and 147, respectively. The front sprocket 157 is a hydraulic motor 159 provided at the front of the subframe 147.
It is designed to be driven directly by therefore,
By operating the chain 158 by this hydraulic motor 159, the column device 15! can freely move in the front and back direction shown by arrow X.

On the other hand, on the rear surfaces of the columns 155, 155, a carrier-side upper connecting member 161 and a carrier-side lower connecting member +91 are provided as cargo handling arms so as to be movable up and down in the vertical direction indicated by arrow Z. This carrier side upper connecting member 161 has rollers 164 provided at the four corners of a U-shaped flat plate 162. ．． 164,
164,164. It is now possible to run up and down along the column 55.55. And the flat plate 162
A hook 163 is fixed to the center of the. Column 1 above
Inside the 55155, hydraulic cylinders 171 (only one side is shown) are installed on the left and right sides, and each hydraulic cylinder 17
The tips of the piston rods 171a of 1 are connected by a shaft +81, and sprockets 182 and 182 and roller 1 are attached to both ends of the shaft 181, respectively, and a pair of hydraulic cylinders 197 (only one side is shown) are installed on the sides of the columns 155 and 155. ) is connected to the tip of a piston rod 197a, and by operating each hydraulic cylinder 197, this lower connecting member 191 can be driven in any direction up or down. Further, the hydraulic motor 159 and each hydraulic cylinder 171, 197 are driven by supplying oil from a hydraulic pump 148 provided on the subframe 147, 147 through hydraulic piping (not shown).

When loading a container onto the container handling vehicle 145, first, as shown in FIG. The carrier-side lower connecting member 191 and the container-side lower connecting member 116 provided vertically movably at the front of the container +01 are connected. At this time, it is assumed that the piston rod 17]a of the hydraulic cylinder 171 is contracted, while the piston rod 191a of the hydraulic cylinder +91 is expanded.

83.183 is installed. Said roller 183.1
83 rolls within the grooves of the columns 155, 155 and guides the vertical movement of each piston rod 171a. In addition, the chain 1 fixed to one end of the tube of the hydraulic cylinder +71
84 and 184 are wound around the sprocket 182 and hang downward, and are connected to the U-shaped flat plate 162 of the upper connecting member 161. Therefore, by extending the piston rod 171a of each hydraulic cylinder +71, the upper connecting portion vI'161 can be pulled up with the chains:/184, 184, and by contracting the piston rod 71a of each hydraulic cylinder 171. , the upper connecting member 161 can be lowered by its own weight. The carrier side lower connecting member 191 includes the column 155
, 155, a pair of clevises 19 are arranged rearward in the center of a member 192 bent in a U-shape to cover the rear and side surfaces of the member 155.
5,195 is installed. This clevis 195,1
A vial 196 insertable into the holder 95 is attached to the second entry 192 by wire. The lower connecting member 19 and the hydraulic cylinder 171 as shown in FIG.
By extending the piston rod 171a, the carrier-side upper connecting member 161 and the container-side upper connecting member 111 are raised to raise the front part of the container 101, while the carrier-side lower connecting member 191 and the container-side lower connecting member 116 are raised. Keep it stationary relative to the ground.

Then, the container-side lower connecting member 116 is lowered relative to the container body 102, and this movement is transmitted by the chain 121 to cause the support member 103 to protrude downward and raise the rear part of the container 101. That is, the front and rear parts of container +01 are raised horizontally in synchronization. When the main girder 132 provided on the lower surface of the container 101 is at the level between the subframe 147 and the road, the first
As shown in FIG. 0(c), the hydraulic motor 1 shown in FIG.
59. Then, the column device 151 is moved forward via the chain 158, and the container 101 is moved horizontally (the rear part of the container 101 is
03).

When the loading is completed, as shown in FIG. 1O(d), the piston rod 19 of the hydraulic cylinder 197 is
By contracting 7a, the carrier-side lower connecting member 191 and the container-side two-part connecting member 116 are raised, and the support member +03 is raised via the chain 140. In addition, container 101 is vehicle +45
When unloading the car, I operate it in exactly the opposite way as described above.

<Problems to be Solved by the Invention> By the way, the conventional container cargo handling vehicle 145 described above has a column device 151 provided on the subframes 147, 147, and a sprocket 156 provided at the front and rear portions of the subframe +47 147. Chain 15 winding around 157
8, so the groove width of the subframe 147 147 or the above sprockets 156, 15
It is wider than the outer diameter of 7. Therefore, there is a problem in that the height of the entire vehicle (hereinafter referred to as "overall height") increases. Further, - the above-mentioned 3 for driving the above-mentioned sprocket 157;
It is characterized in that both ends of the chain, which is stretched around each sprocket, are fixed to the front and rear parts of the subframe, respectively.

<Function> When a sprocket is driven by a hydraulic motor installed in a column device, the column device is driven along a chain that spans the sprocket and a pair of sprockets located before and after the sprocket, and is fixed at both ends. Move smoothly forward or backward.

Since both ends of the chain are fixed to the front and rear parts of the subframe, unlike conventional container handling vehicles, there is no need for sprockets to wind and reciprocate the chain. Therefore, the height of the subframe is
There is no need to make it larger than the diameter of the sprocket, so it can be lower than before. Therefore, it is possible to reduce the overall height of the vehicle. Further, in a column device equipped with a hydraulic cylinder that moves the carrier-side connecting member up and down, a hydraulic motor 159 for moving the column device back and forth is provided at the front part of the subframe 147, while hydraulic cylinders 171, 197 are provided in the column device 151, there is a problem in that hydraulic piping from the hydraulic pump 148 must be provided separately.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a container cargo handling vehicle that can reduce the overall height by narrowing the groove width of the subframe, and can also integrate hydraulic piping into one system.

<Means for Solving the Problems> In order to achieve the above object, the present invention includes a column device provided so as to be movable back and forth on a subframe mounted on a chassis frame, and a column device provided on the column device so as to be movable up and down. In the container cargo handling vehicle, the column device includes a hydraulic motor and a hydraulic cylinder that moves the carrier side connecting member up and down. Since a sprocket driven by a motor and a pair of sprockets located before and after the above-mentioned sprocket are provided, and an 8-torer is provided, the hydraulic piping from the hydraulic pump to the column device is organized into one system.

<Example> Hereinafter, a container cargo handling vehicle of the present invention will be described by way of an example.

FIG. 1 shows a container 1 loaded onto a container cargo handling vehicle (hereinafter referred to as a "carrier") 45 according to an embodiment of the present invention.

As shown in FIG.
are attached parallel to each other in the front-rear direction with the grooves facing inward. A column device 51 is provided on the subframe 47, 47 so as to be movable in the front and back direction shown by the arrow X. 4, 5, and 6 respectively show the above column device 5.
1 laterally.

Shown are views from the rear and front. This column device 51 is configured to slide along the upper side of the sub-frame 47.47 by sandwiching the upper side of the sub-frame 47.47 from both upper and lower sides between channel steels 53.53 via slide pads 52.52. There is. The column device 51 is provided with a pair of columns 55 made of H-beam steel on the left and right sides on channel steels 53 and 53, the upper ends of which are connected to each other by a top plate 70, and the lower ends of which are connected by a bottom plate 80 as shown in FIG. are doing.

Further, a hydraulic motor 59 is provided on the bottom plate 80 on the front side of the column 55, and a sprocket 57 is provided on the rotating shaft of this hydraulic motor 59, and the sprocket 57 is placed on the front and back of the sprocket 57 directly below the bottom plate 80, that is, at the level of the upper side of the subframe 47. Sprockets 54 and 56 are provided at the respective positions. And the above three sprockets 54, 56 and 5
A chain 58 is strung across the chain 7. chain 5
8 has one end 58a fixed to the center part 49a of the plate 49 connecting the front ends of the subframes 4-7.47, and is bent upward by the sprocket 54 from the front and rear directions through between the subframes 47.47, and the sprocket 5756 The other end 5 is bent downward and rearward by the shaft 48 connecting the rear ends of the subframes 47 and 4.7, respectively, and the other end 5
8b is fixedly attached to the arm 68, and the upper portions of the connecting pins 659 and operating pins 69 are attached to the other end of the arm 68, approximately in the center thereof, so as to be rotatable and have some play in the longitudinal direction of the arm 68. . The connecting pin 65 is connected to the carrier side lower connecting member 9.
1, when the operating pin 69 is not pressed upward by the rod 92 described later in 1, the arm 68 is rotated by its own weight about the shaft 68a as a fulcrum to connect the clevis 63, while the carrier side upper connecting member 61 and the carrier side When the connecting member 91 is vertically abutted and the actuating pin 69 is pressed upward by the rod 92, this action causes it to disengage upward from the clevis 63 and release the connection.

Inside the column 55.55, a pair of hydraulic cylinders 71.71 are erected with the lower ends of their tubes fixed to the bottom plate 80 with pins 74, and the upper ends of the piston rods 71a, 71a of the hydraulic cylinders 71.71 are attached to the shafts. While connecting at 75,
Sprockets 82 and 82 are attached to both ends of this shaft 75, respectively.

Further, a pair of support members 73° are located approximately at the center of the shaft 75.

The groove width of the sub-frames 47, 47 is set to the minimum width that allows the chain 58 to pass through, so that the overall height of the carrier 45 is kept low. By driving the hydraulic motor 59 in either direction of rotation, the column device 51 can be freely moved forward or backward along the chain 58.

On the other hand, at the rear of column 55.55 is the carrier side.
Two-part connecting member 61. The carrier-side lower connecting members 91 are provided so as to be movable up and down in the vertical direction indicated by arrow Z, respectively. The carrier-side upper connecting member 61 includes a pair of plates 62 each having an L-shaped cross section and connected at the top and bottom by horizontal rods 66 and 88, respectively.
．． 62, a clevis 63 attached to the vertical rod 67 that connects the central portions of the horizontal rods 66, 88, and a connecting pin 65 that can be connected by passing through both sides of the clevis 63.
Pair of left and right arms 68.68 and operating pin 69°69
It is equipped with The clevis 63 is attached with the concave portion facing rearward. Further, a rotary mill 273 is vertically attached to a shaft 68a provided at one end of the arm 68 on the vertical rod 67, and a sprocket 86 is attached between the lower ends of this support member 7373. A pair of chains 84.84 fixed near the lower end 81 of the tube of the hydraulic cylinder 71.71 is connected to the sprocket 82.
82 is wound and hangs down, and the carrier side upper connecting member 6
A chain 85 is connected to both ends 88a, 88a of the horizontal rod 88 of No. 1, and is fixed to the central portion 70a of the top plate 70.
is wound around the sprocket 86, extends upward, and is connected to the central portion 88b of the upper horizontal rod 88.

Therefore, the piston rod 7 of the hydraulic cylinder 71
When 1a is extended, sprockets 82, 82, shaft 7
5. The support members 73, 73 and sprockets 86 (hereinafter referred to as "sprockets 82, 86, etc.") can be raised together, and the carrier side upper connecting member 61 can be pulled up by the chain 84. In addition, the hydraulic cylinder 7
When the first piston rod 71a is contracted, the carrier side upper connecting member 61 can be lowered by its own weight. Note that this carrier side connecting member 61 is connected to the plate 6
By means of rollers 64 attached to the sides of the column 2, it is possible to run up and down between the left and right columns 55 along the inner grooves of the columns 55.

On the other hand, the carrier side lower connecting member 91 is connected to the column 55.
A pair of side plates 97, 97 covering the side surfaces of the side plate 97.
A pair of rods 92 and 93 horizontally connect the rods 92 and 97, and a clevis 9 attached to the center of this rod 92 and 93.
It is equipped with 5. Further, this clevis 95 is provided with a pair of rotating pieces 203, 203, and a torsion spring 20 as a resilient member.
4 and a pair of lock pieces 205, 205 are attached. The ``-2 rehis 95 is attached with the four parts of a U-shape facing backward horizontally and with the tips thereof protruding. The lock piece 105 can freely rotate around a shaft 95b provided at the top end of the clevis 95, and can hang down in the vertical direction due to its own weight to close at least a part of the recess of the clevis 95. The rotating pieces 203, 203 are made of approximately 7-shaped plates, and allow a rotation of 5 degrees corresponding to the short side of L on a shaft 95a provided above the clevis 95 near the connecting rod 92. However, when the rotating piece 203 comes into contact with the upper part, the counterclockwise rotation is prevented, that is, the connected state is established.

This carrier side lower connecting member 91 is connected to the column 55.55.
The lower end of a piston rod (facing downward) 91a of a hydraulic cylinder 91 is fixed to the rear surface with a bracket 94. Further, sliding members 99,99 are provided inside the side plates 97°97, so that the carrier side lower connecting member 91 is connected to the piston rod 91 of the hydraulic cylinder 91.
By expanding and contracting, it is possible to move up and down along the column 55.

Hydraulic motor 59 on the column device 51. Hydraulic cylinders 71.71 and 96.96 are driven by a hydraulic circuit shown in FIG. This hydraulic circuit includes a hydraulic pump 148, a tank 240, a filter 241, a directional control valve 242 for driving a hydraulic cylinder having 6 points and 3 positions, a directional control valve 243 for driving a hydraulic motor, and a check valve. Valves 245, 246 and the above-mentioned hydraulic motor part are attached. And the rotating piece 203°20
3 is provided with a connecting plate 209 that connects the long sides of the left and right L so that they can rotate together around the shaft 95a, and is always biased clockwise in FIG. 4 by the torsion spring 104. There is. In addition, the carrier side upper connecting member 61
When the clevis 63 or the connecting plate 209 is pressed downward and held against the upper surface of the connecting rod 92 by vertically abutting the lower connecting member 91 on the carrier side, the rotary piece 203 locks the rotatable lock piece 205 I try not to come into contact with it at all. Therefore, the lock piece 205 is in a state of rotation around the shaft 95b, and the recessed portion of the clevis 95 is in an open state, that is, a state in which the connection is released. On the other hand, when the carrier side upper connecting member 61 and the carrier side lower connecting member 91 are vertically separated and the clevis 63 is separated from the connecting plate 209, the rotating pieces 203, 203 are biased by the torsion spring 204. The connecting rod 92 rotates clockwise and comes into contact with the side surface of the connecting rod 92, so that it is locked. At this time, the rod pieces 205 are connected to the flow rate control valves 247, 247 and 247, respectively, which are connected to the ports 659 clockwise in FIG.
It is equipped with 248. Hydraulic pump 148 is provided at the center of chassis frame 46 as in the past. The above-mentioned hydraulic cylinders 71.7 + and 96.96 are connected in parallel, and these and the port of the above-mentioned directional control valve 242 are connected to a pair of piping 2.
51 and 252, and a pair of pipes 253 and 254 connect flow control valves 247 and 248 connected to the boat of the hydraulic motor 59 and the boat of the direction control valve 243. The above piping 251, 252, 253 and 2
54 are grouped into one system and led from the hydraulic pump 148 side to the column device 51 side. The above directional control valve 242,2
43 are both in the neutral position as shown in FIG.
Hydraulic pump 4 from tank 240 through filter 241
The oil sent to the pipe 249 by the directional control valve 2
42, 243, this directional control valve 243 and tank 2
tank 2 through piping 250 connecting to tank 2.
Vented to 40. On the other hand, when the directional control valve 243 is in the operating position forming a straight flow path, the oil flows through the check valve 246. Directional control valve 243. Piping 253. Flow control valve 2
47. Hydraulic motor59. Flow control valve 248. Piping 254
．． It sequentially passes through the directional control valve 243 and returns to the tank 240,
Therefore, the hydraulic motor 59 can be driven in either direction of rotation. When the directional control valve 243 is in the operating position forming a crossing flow path, the pipe 253 is connected to the pipe 2.
The oil flow up to 54 is reversed so that the hydraulic motor 59 can be driven in the opposite direction. Further, when the directional control valve 242 is in the operating position forming a straight flow path, the oil passes through the check valve 245, the directional control valve 242, and the pipe 251 to the hydraulic cylinders 71.7+, 9.
6. Piston rod 71a 71 in each tube of 96
a, 95a, 96a side and pressurizes each piston rod in a direction to simultaneously contract, while the direction control valve 242
When in the operating position forming cross-flow paths, the oil
Piston head in tube 7 lb, 7 lb, 96
b96b side and each piston rod 71a, 7]a
96a and 96a are simultaneously expanded.

19 to raise and lower it. The container side upper connecting member 11 is a semicircular member, and both ends thereof are horizontally attached to the upper center of the front panel 12. The container-side lower connecting member 16 includes an engaging member 17 and a sliding member 18. The engaging member 17 is a U-shaped member 17 attached to a vertical rectangular plate 17b via reinforcing ribs 17d.
c is attached, and furthermore, a vertical rectangular plate 17a is attached perpendicularly to the rectangular plate 17b. The container-side upper connecting member 16 has a shape in which the rectangular plate 17a of the engaging member 17 and the groove of the channel-shaped sliding member 18 intersect. A pair of guide members 15.15 made of channel steel are erected in parallel with a gap in the grooves 12a of the front panel 12 and the front beam 14 with the grooves facing inward. Rectangular plate 17a of engagement member 17
and the inner surface of the groove of the sliding member 18 is in sliding contact with the outer periphery of the guide member 15.15. Therefore, the entire container-side upper connecting member 16 can slide in the vertical direction. The above chain 2 [is symmetrical in this way, and the hydraulic cylinders 71, 71 and 9696 are connected to one
Two directional control valves 242 are operated.

As shown in FIG. 3, the container 1 includes a box-shaped container main body 2, a columnar support member 3.3, a container-side upper connecting member 11, a container-side lower connecting member 16, and chains 21 and 40. We are prepared. The container body 2 has a symmetrical rear column 5.5 and a front column 1.
3.13, side column 30 (only one side shown), rear beam 4, front beam 14, upper side frame 10° 10, lower side frame 9.9, front panel 12, bottom plate 19 , legs 20, 20, and a top plate and peripheral panels (not shown).

A groove 12a having a concave cross section is provided in the vertical direction at the center of the front panel 12 and the front beam 14.

Each of the support members 3.3 is fitted into the rear column 5.5 so as to be able to rise and fall freely, and has a rectangular plate-shaped grounding member 7 attached to its lower end. The supporting members 3, 3 are connected at their lower parts by the same shaft 8, and are provided as a pair with zero synchronization with each other (only one side is shown in the figure), and one end is attached to the side of the sliding member 18, The front beam 14
It is inserted into the front column 13 and bent horizontally from above and downward by a pair of sprockets 23 and 24 provided in this beam 14, and further bent up and down by a sprocket 25 inserted into the front column 13 and provided at the bottom of this column 13. It is bent in the front-rear direction from the direction, inserted into the lower side frame 9, and connected to the upper part 3a of the support member 3 by extending from the front-rear direction in the -L direction by means of a sprocket 26 provided at the rear end of this side frame 9. ing. In addition, the chain 4
0 has one end connected to the lower part of the engaging member 17, extends vertically at the front of the container body 2, and has a sprocket 42 provided at the front lower end of the container body 2.
It is bent from the up-down direction to the front-back direction and passed under the bottom plate 9, and further bent up and down by a sprocket 43 provided on the rear lower surface of the container body 2 and connected to the shaft 8. Therefore, the container side lower connecting member 16
By pushing down from the state shown in FIG. 3, the support member 3 is projected downward via the chain 21, and the chain 40 is loosened to allow the shaft 8 to descend, that is, to allow the support member 3 to descend. can do. vice versa,
When the container side lower connecting member 16 is moved upward from the lower end position, the chain 40 pulls up the support member 3.3 via the shaft 8, while the chain 21 is arranged to allow the support member to rise. It will loosen up.

When loading the container l onto the container handling vehicle 45, it is carried out as follows.

Now, the carrier 45 and the container 1 are in the state shown in FIG. 8(a), the container side lower connecting member 16 is in the raised position, and the support member 3 is in the state recessed into the rear column 5. Further, the piston rods 71a, 71a of the hydraulic cylinder 7171 are in a contracted state, the piston rod 96a of the hydraulic cylinder 96 is in an extended state, and the carrier side upper connecting member 61 and the carrier side lower connecting member 91 are in the lowest position in the column device 51. The lower connecting member 91 on the carrier side remains stationary at the lowered position of the column 55 because the lower connecting member 91 on the carrier side is in contact with the upper and lower sides at the points and receives the hydraulic pressure when the lower connecting member 91 does not extend and is applied with the hydraulic pressure. Then, as the carrier-side upper connecting member 61 rises and separates from the carrier-side lower connecting member 91,
The clevis 63 is automatically closed by the connecting pin 65, and at the same time, the clevis 95 is automatically closed by the lock piece 105. That is, the carrier side upper connecting member 61 and the container side upper connecting member 11. The carrier-side lower connecting member 91 and the container-side lower connecting member 16 are automatically connected. Then, the front part of the container 1 is lifted by the carrier side upper connecting member 61 via the container side upper connecting member 11, and at the same time, the rear part of the container 1 is lifted by the supporting member 3 as follows.

In other words, the carrier side lower connecting member 91 remains stationary.
Since the container side lower connecting member 16 is stationary with respect to the ground, when the container body 2 rises, the container side lower connecting member 16 moves relative to the container body 2, as shown in FIG. 8(b). It is assumed that the clevises 63 and 95 were previously disconnected from each other. In addition, the directional control valves 242, 243 shown in the hydraulic circuit in FIG.
are both in neutral position. In this state, the container side upper connecting member 11 is fitted into the recess of the clevis 63 of the carrier side upper connecting member 61. Since the clevis 63 is in a state in which the connecting pin 65 is removed, the clevis 63 can be easily fitted. Furthermore, the engaging member 17 of the container-side lower connection member 16 is fitted into the recess of the clevis 95 of the carrier-side lower connection member 91 . Since the locking piece 205 of the carrier-side lower connecting member 91 is simply suspended by its own weight and is rotatable, it can be easily fitted in the same way as the upper connecting member 61.11. Next, the directional control valve 242 is switched to the cross flow path operating position, the piston rod 71a71a of the hydraulic cylinder 71°71 is extended, and the sprocket 82.8
6 etc., connect the carrier side upper connecting member 61 with the chain 84.
to raise it. On the other hand, the above operation of the directional control valve 242 causes the piston rod 96 of the hydraulic cylinder 96 to
a moves downward in the same direction, and this movement causes chains 21 and 40 to
This is transmitted to the support member 3, which causes the support member 3 to protrude downward and raise the rear part of the container 1. That is, the front part of the container 1 is pulled up by the container-side upper connecting member 11, and the rear part is lifted by the support member 3, and the movements are synchronized, so that the container 1 rises in the horizontal direction. When the main girder 32 provided at the bottom of the main body 2 of the container L reaches the level between the sub-frame 1247 of the carrier 45 and the road, the directional control valve 242 is switched to the neutral position and the operation of the hydraulic cylinders 71, 71 is stopped. to stop the upward movement. Next, with the brake of the carrier 45 released and the transmission set to neutral, the directional control valve 243 is operated to drive the hydraulic motor 59 on the column device 51.
is moved forward relative to the chassis frame 47.

At this time, since the rear part of the container l is supported by the lower end grounding member 7 of the support member 3 and does not move horizontally with respect to the ground, the carrier 45 side is pulled rearward by the chain 58, as shown in FIG. 8(c). move due to being moved. After the horizontal movement of the carrier 45 is completed, with the container l placed on the carrier 45, the directional control valve 24
2 to the operating position of the straight flow path, and the hydraulic cylinder 96
The carrier side lower connecting member 91 is raised by contracting the piston rod 96a. At this time, since the carrier side upper connecting member 61 is connected to the container side upper connecting member 11, it is held at the height of the container side upper connecting member 11. Also, the hydraulic cylinder 7I contracts and the chain 84 tries to slacken, but since the sprocket 86 is restrained vertically by the chain 85 and the support member 73, the hydraulic cylinder 71 does not contract and the chain 84 does not slacken. . Therefore, the piston rod 7I of the hydraulic cylinder 71
a remains in an expanded state even if it simultaneously receives hydraulic pressure to be contracted by the two operations of the directional control valve 242. Then, as shown in FIG. 8(d), the container-side lower connecting member 16 connected to the carrier-side lower connecting member 91 is raised by 1", and between the 4th seam and 4th seam is 1".
Since the column device 51 can be moved forward and backward through the book chain 58, the subframe 47.4
The width of the groove 7 needs to be the minimum width that allows the chain 58 to pass through, and can be made narrower than in the past, so that the overall height of the carrier 45 can be lowered.

Also, a hydraulic motor 59 that moves the column device 51 in the front-back direction, a hydraulic cylinder 71.71 that moves the carrier-side upper connecting member 61 in the vertical direction, and a hydraulic cylinder 96 that moves the carrier-side lower connecting member 91 in the vertical direction. ．．
96 are both provided on the column device 51, so that the piping 251, 252, 253 . and 254 can be combined into one system.

Furthermore, the hydraulic cylinder 71.71 and the hydraulic cylinder 9
6.96 are connected in parallel and controlled by the same directional control valve 242, so that the carrier side upper connecting member 61. When the carrier-side lower connecting member 96 is moved downward, the support member 3 is lifted up from the ground by the drive shaft 21.40. Note that when unloading the container l from the carrier 45, the procedure is completely reversed to that described above.

In this way, this container handling vehicle can load and unload the container l onto the carrier 45 while maintaining a horizontal attitude. Furthermore, the carrier-side upper connecting member 61 and the container-side upper connecting member 11, and the carrier-side lower connecting member 91 and the container-side lower connecting member 16 can be automatically connected or disconnected in accordance with the loading and unloading operation.

Furthermore, during the above-mentioned loading, the carrier 45 is placed in the column device 5 with the transmission in neutral.
By driving the first hydraulic motor 59, it is pulled backward via the chain 58, making it easy to control and slow down the speed of movement. By slowing down the speed of movement, it is possible to prevent the carrier 45 and the container l from colliding and being damaged.

Further, it is possible to prevent operational errors such as placing the wrong sub-hydraulic cylinder on the chassis frame 46.

<Effects of the Invention> As is clear from the above, the container handling vehicle of the present invention is capable of loading and unloading containers while maintaining a horizontal posture, and moreover, the container cargo handling vehicle of the present invention can load and unload containers while maintaining a horizontal posture, and furthermore, The cargo handling arm and the container can be automatically connected or disconnected.

In addition, in the container cargo handling vehicle of this invention, both ends of the chain are fixed to the front and rear parts of the subframe, so the column device can be moved back and forth along the chain, and the height of the subframe can be adjusted. Therefore, the overall height of the vehicle can be reduced.

Furthermore, the column device equipped with a hydraulic cylinder that moves the carrier-side connecting member up and down is equipped with a hydraulic motor that moves this column device in the front and back direction, so the hydraulic piping can be
It can be organized into a system.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a state in which a container is loaded into a container handling vehicle according to an embodiment of the present invention, Fig. 2 is a diagram showing the container handling vehicle as seen diagonally from the rear, and Fig. 3 is a diagram showing the container loaded into a container handling vehicle according to an embodiment of the present invention. Diagram showing the view from diagonally from the front, No. 4
5 and 6 are views showing the column device of the container cargo handling vehicle described in -1- from the side, rear, and front, respectively, and FIG. 7 is a diagram showing the hydraulic circuit of the container cargo handling vehicle mentioned above. , FIGS. 8(a) to 8(d) are diagrams illustrating the operation of loading the container onto the container handling vehicle, FIG. 9 is a diagram showing a conventional container handling vehicle viewed diagonally from behind, and FIG. 1O. (a) thru|or (d) are figures explaining the operation|movement of loading a container into the said conventional container cargo handling vehicle. l. Container, 2. Container body, 3. Support member,
1 container side upper connecting member, 16 container side lower connecting member, 17... engaging part shrine, 2+ 40 58 84 85 chain, 23.2
4 25, 26.42, 43, 54.56゜57.82
．． 86... Sprocket, 45... Carrier, 46... Yarn frame, 4
7...Subframe, 51...Column device, 59...i+l+pressure motor, 6
1. Carrier side lower connecting member, 63.95 ・Clevis, 65.. Connecting pin, 69.
...Operating pin, 71.96...Hydraulic cylinder, 71a
, 95a... Piston rod, 91... Carrier side lower connecting member, 203... Rotating piece, 204... Torsion spring, 205...
Lock piece, 209...Connecting plate, 242.243...Directional control valve, 249.250, 251.252, 253, 254 Hydraulic piping.

Claims (1)

[Claims] (1) A column device that is provided so as to be movable back and forth on a subframe mounted on the chassis frame, and a carrier side connecting member that is provided on the column device so as to be movable up and down and that is removably connected to the container side connecting member. , a container cargo handling vehicle equipped with a hydraulic cylinder for vertically moving the carrier-side connecting member, wherein the column device includes a hydraulic motor, a sprocket driven by the hydraulic motor, and a pair of sprockets located before and after the sprocket. A container cargo handling vehicle characterized in that the two ends of a chain stretched over the three sprockets are fixed to the front and rear parts of the subframe, respectively.