JPH0262410B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a method and mechanism for opening and closing a cargo compartment of a vehicle.

<Prior art and its problems> In order to facilitate loading and unloading work for freight vehicles, the present applicant has developed a patent application published in 1983 in which not only the sides but also the ceiling of the cargo compartment of the cargo compartment can be opened and closed.
No. 67623 was proposed.

However, in this known invention, when the side and ceiling surfaces of the cargo hold are opened, the rear support frames, especially the rear support frames that make up the framework of the cargo hold, remain in a fixed state standing up from the loading platform. When loading and unloading glass plates and other special heavy loads from the ceiling using a crane, or when loading and unloading similar items from the side using a forklift, the above-mentioned support frame is used. There is still a risk of being hit, and if special care is not taken, this could result in damage to the package.

<Means for Solving the Problems> The present invention is intended to improve these problems, and as a cargo compartment opening/closing method for that purpose, a frame plate fixed and erected at the front end of a cargo platform in a freight vehicle is used. A pair of left and right columns also stand up from the rear end of the loading platform, and extend horizontally between the front and rear of the frame plate and both columns, with their front ends facing the upper end of the frame plate, and at the rear. A pair of left and right beams whose ends are connected and integrated in advance to the upper ends of the columns form the basic framework of the cargo compartment, and slide guide rails extend along the left and right lateral directions to the upper ends of the frame plates. and a chain case are fixedly installed in a stacked state in their vertical positional relationship, and a required number of floating rollers pivotally supported at the front ends of both beams are engaged with the slide guide rail, and the chain case is A pair of endless chains housed in parallel in a front-back position relationship are determined so that they can be rotated separately by corresponding forward and reverse rotation motors, and a pair of endless chains are installed in the middle of both chains. The front ends of the beams are fixedly connected to each other, and on the other hand, the slide guide rails and chain cases, which extend along the left and right sides, are also fixedly installed in a stacked state at the rear end of the loading platform. A required number of floating rollers, which are pivotally supported at the lower ends of both columns, are engaged with the slide guide rail, and a pair of endless chains, which are also housed in parallel in the chain case, are engaged with the slide guide rail. The motors for the above-mentioned beams and the motors for the columns are designed so that they can be rotated separately by forward and reverse rotation motors, and the lower ends of both columns are fixedly connected to the middle part of both chains. By rotating the chains synchronously and rotating the chain, the above-mentioned The cargo compartment is opened and closed by sliding in the left and right directions along the slide guide rail, and the cargo compartment opening/closing mechanism also includes a frame plate fixed and erected at the front end of the cargo platform of the cargo vehicle. , a pair of left and right columns that also stand up from the rear end of the loading platform, and extend horizontally between the front and rear of the frame plate and both columns, with their front ends facing the upper end of the frame plate, and A pair of left and right beams whose rear ends are connected and integrated in advance to the upper ends of the pillars, a chain case fixed to the upper end of the frame plate in a state of extension along the left and right lateral directions, and the case. A slide guide rail laid and integrated on the upper wall surface, and shafts mounted parallel to the left and right pairs of beams at both ends of the chain case, and rotated by separate forward and reverse rotation motors. A pair of left and right rotating shafts, a driving sprocket fixedly installed on each rotating shaft, and a pair of loosely coupled driven sprockets at the front and rear, one driving sprocket and the remaining driven sprocket on both rotating shafts. As a pair,
A pair of front and rear endless chains are installed in a parallel manner between the left and right sides of the platform, and a slide guide rail is also installed extending in the left and right lateral directions to the rear end of the loading platform, and the bottom of the rail. A chain case that is fixed and integrated with the wall surface, and a pair of left and right supports that are supported in parallel at both ends of the chain case in correspondence with a pair of left and right columns, and that are rotationally driven by separate forward and reverse rotation motors. a rotating shaft, a driving sprocket fixedly installed on each rotating shaft, and a pair of loosely coupled driven sprockets, one driving sprocket and the remaining driven sprocket on both rotating shafts as a pair. ,
It is equipped with a pair of front and rear endless chains that are wrapped around the left and right sides in parallel. At the same time, the required number of floating rollers, each supported by the lower ends of both pillars, are engaged with the slide guide rail on the loading platform, and the front ends of both beams are also paralleled in the chain case on the frame plate. The motors for the beams are connected separately to the middle part of the installed chain, and the lower ends of both columns are separately fixed and connected to the middle part of the chain, which is also installed in parallel inside the chain case on the loading platform. By rotating the chain and the column motor in synchronization and driving the chain, either the left or right of the beam and column, which have been connected and integrated in advance, can be pulled to the position where the other one exists. It is characterized in that the cargo compartment can be opened and closed by sliding it in the left and right directions along the slide guide rails so as to separate the cargo compartment.

<Example> Hereinafter, the details of the present invention will be explained based on the drawings. Figures 1 to 13 show the opening/closing mechanism of the cargo compartment, and 10 is the loading platform (floor deck) of the freight vehicle. A rigid frame plate 12 is integrally fixed and erected while facing the position immediately behind the driver's cab 11 from the front end. Although this frame plate 12 is shown in the form of a non-open wall in the figure, it may also be in the form of an integrated frame in the form of a gate. 13a,1
Reference numeral 3b designates a pair of left and right pillars that stand vertically from the rear end corners of the loading platform 10, but these are made of hollow square steel and are separated and independent from the loading platform 10 in advance, and will be described later. It is designed to be able to slide horizontally to the left and right of the loading platform 10.

Further, 14a and 14b are a pair of left and right beams that are horizontally arranged in front and back between the upper end of the frame plate 12 and the upper ends of both supports 13a and 13b, and are hollow and thinner than the supports 13a and 13b. The rear end portions are connected and fixed to the supports 13a and 13b, while the front end portions are separate and independent from the frame plate 12, and are also connected to the loading platform 1.
It is configured to be able to slide along the lateral direction of zero. And, with these various parts,
The basic framework of the cargo hold has been constructed.

15a, 15b are a pair of left and right support shafts rotatably mounted on the beams 14a, 14b via a required number of bearings 16a, 16b;
Like 14b, it extends long in the front and back direction, and is rotated by a predetermined fixed angle range by forward and reverse rotation motors 17a and 17b connected correspondingly to each front end. It's getting old.
Although not shown, an operation panel including start switches for the motors 17a and 17b is installed, for example, at the lower front of the frame plate 12, and is manually operated.

Reference numerals 18a and 18b denote a pair of left and right side cover frames suspended from the support shafts 15a and 15b, respectively, so as to define both side surfaces of the cargo compartment, and a pair of upper and lower side cover frames are pivotally connected to each other so as to be bendable to each other. undulating arms 19a, 19b, 20a, 20b
The upper ends of the upper arms 19a, 19b are connected to the support shafts 15a, 15b.
The upper ends of the lower arms 20a, 20b are fitted and fixed so as to move up and down in unison with the rotation of the upper arms 19a, 19b, and the upper ends of the lower arms 20a, 20b are loosely engaged in a so-called hanging unfolded state due to their own gravity. It is being done.

Furthermore, 21 is a ceiling cover frame that pivotally connects both the above-mentioned support shafts 15a and 15b while facing the ceiling surface of the cargo compartment.
2a, 22b, and a center bar 23 which pivotably connects them to each other in a freely refracting manner. That is, the outer ends of both arms 22a, 22b are connected to the support shaft 15a,
15b, the inner end is also connected to both arms 22a, 2.
Both are loosely connected to a center bar 23 that is common to 2b.

A shielding cover S1 made of a flexible sheet material such as a hood or a rigid panel material such as FRP or aluminum is placed on the ceiling cover frame 21 and both side cover frames 18a, 18b. 21 so as not to impede the above-mentioned refraction effect, and cover both side surfaces and the ceiling surface of the cargo compartment.
In addition, when the cover S1 is made from rigid panel materials, these are attached to the frames 18a, 18b,
It is also possible to form it into an integrated object with 21 itself.

As mentioned above, the pair of left and right beams 14a, 14b can slide in the lateral direction of the loading platform 10, but for this reason, the front ends of the beams 14a, 14b are It is connected and supported like this.

That is, in FIGS. 5 to 8 that clarify this, 24 is a chain case fixedly installed at the upper end of the frame plate 12 over almost the entire length thereof, and is made of channel steel whose lip extends inward. At the same time, the interior of the case 24 can be seen through and inspected by opening the opening/closing lid 25 fixed at an intermediate position in the length direction from the front. 26
are leg plate introduction grooves arranged in an open manner on the upper wall surface of the case 24.

Reference numeral 27 denotes a slide guide rail which is fixedly integrated into the upper wall surface of the chain case 24 in a laminated state, and is made of a pair of front and rear channel-shaped steels facing each other. At the same time, the mutual gap between the two channel steels is the same as that of the case 24.
It is in direct communication with the introduction groove 26 of. 28a, 28b
are leg plates that are integrally and continuously suspended from the front ends of both beams 14a and 14b, and are introduced into the chain case 24 at the lower stage position through the slide guide rail 27.

At a mid-height position where each leg plate 28a, 28b faces inside the slide guide rail 27, a roller shaft 29 passing through the leg plate 28a, 28b is provided.
A pair of front and rear floating rollers 30a and 30b supported in a so-called double-sided state by a and 29b;
Similarly, one floating roller 32a, 32 is supported in a so-called cantilevered state by roller shafts 31a, 31b separately extending from the leg plates 28a, 28b.
b are installed so as to be freely movable, and all of them are adapted to perform rolling motion while engaging with the slide guide rail 27. Further, chain fixing pieces 33a and 33b are integrally attached to the lower end positions of the leg plates 28a and 28b facing into the chain case 24, to which both ends of the chain, which will be described later, are respectively connected. -ing

Reference numeral 34a denotes a rotating shaft which is located corresponding to either the left or right beam 14a and is supported at one longitudinal end of the chain case 24, and has a driving sprocket 35a and a driven sprocket 36a.
are attached in parallel in a front-back positional relationship, and the drive sprocket 35a is rotationally driven by a forward/reverse rotation motor 37a connected to the rotating shaft 34a. The driven sprocket 36a is loosely coupled on its rotating shaft 34a.

34b is located corresponding to the other remaining beam 14b,
It is a rotating shaft supported at the other end in the longitudinal direction of the chain case 24, and also has a driving sprocket 35b and a driven sprocket 36b installed in parallel in a front-back positional relationship.
After all, the drive sprocket 35b is the rotating shaft 3
It is adapted to be rotationally driven by a forward/reverse rotation motor 37b connected to the rotary motor 4b. The driven sprocket 36b is also loosely engaged with the rotating shaft 34b.

In other words, in the left-right mutual relationship between the beams 14a and 14b, as suggested from FIGS. A driven sprocket 36b on another rotating shaft 34b located facing the beam 14b forms a pair, and an endless chain 38 is wound around both sprockets 35a and 36b. is rotated by a left motor 37a which rotationally drives a drive sprocket 35a. In addition, the chain 38 is cut off and connected to the fixing piece 33a of the leg plate 28a hanging from the left beam 14a through adjustment screw rods 39 fixed to both ends. are connected and integrated.

Also, a driven sprocket 36a on the rotating shaft 34a facing the beam 14a on the left side, and a driving sprocket 35 on another rotating shaft 34b facing the beam 14b on the right side.
b form a pair, and both sprockets 36
There is also a separate endless chain 40 between a and 35b.
is also wound around the chain 40, and the chain 40 is rotated by the right motor 37b which rotationally drives the drive sprocket 35b. And that chain 4
0 is also connected and integrated with the fixing piece 33b of the leg plate 28b hanging from the right beam 14b by adjusting screw rods 39 which are also separated and attached to both ends.

Therefore, the left motor 37a causes the chain 3 suspended on the drive sprocket 35a to
8 can be circularly driven to slide along the slide guide rail 27 so as to pull the right beam 14b to the left beam 14a, and conversely, by rotating the right motor 37b, the drive sprocket 35b Chain 4 stretched on
By circulating 0, beam 1 on the right side of it
4b, the left beam 14a can be slid along the slide guide rail 27.

In either case, the motors 37a, 37b
By reversely rotating the beams 14a, 1
4b can also be separated from each other. Numerals 41 and 41 are fixing nuts for the threaded rods 39 and 39, and it goes without saying that by moving the threaded rods 39 and 39 forward and backward, the chains 38 and 40 can be attached and removed and their tension can be adjusted. stomach. In the illustrated example, the motors 37a, 37
b is the rotating shaft 3 of the drive sprocket 35a, 35b.
4a and 34b, both are directly connected and integrated, but a transmission means such as a bevel gear may be interposed between the connections. Note that the chain case 24 and the slide guide rail 27 may be laid and fixed on the driver's cab 11 of the vehicle instead of the frame plate 12, thereby supporting the front ends of the beams 14a and 14b in the same manner as above. .

Next, the pair of left and right columns 13a and 13b are connected to the loading platform 1.
As mentioned earlier, it is possible to slide the column 13a in the lateral direction.
The lower end portion of 3b is connected and supported to the loading platform 10 as shown in FIGS. 9-13.

That is, in the same figure, 42 is a slide guide rail laid and integrated over almost the entire length of the rear end of the loading platform 10, and is connected to the beam 14 at the front side described above.
Like the slide guide rails 27 for a and 14b, it is made of a pair of front and rear channel-shaped steel facing each other, and a floating roller, which will be described later, can be received and engaged in the U-shaped groove.

Reference numeral 43 denotes a chain case fixed to the lower wall surface of the slide guide rail 42, and is made of the same lip groove type steel as the chain case 24 at the front side.
A leg plate introduction groove 44 that communicates directly with the leg plate 2 is also opened. Reference numeral 45 denotes an opening/closing lid attached to an intermediate position in the longitudinal direction of the case 43, and by opening this from the rear, maintenance and inspection of the interior thereof can be performed.

Furthermore, leg plates 46a and 46b are integrally extended and suspended from the lower ends of the support columns 13a and 13b, and are introduced into the chain case 43 through the slide guide rail 42. 47a, 47b are roller shafts that pass through the mid-height position of the leg plates 46a, 46b, and these have a pair of front and rear idler rollers 48a, 48.
b is fitted in a so-called floating state with both ends.
49a and 49b are roller shafts that separately extend from the leg plates 46a and 46b, and floating rollers 50a and 50b are also provided at the tips of the extensions.
They are loosely coupled in a so-called cantilevered state, and both of them are designed to roll along the slide guide rail 42. 51a, 51b are leg plates 46a, 46
This chain fixing piece is attached to the lower end position of b and faces into the chain case 43, to which both separated ends of the chain are connected.

Reference numeral 52a denotes a rotating shaft which is located corresponding to either the left or right support column 13a and is supported at one end in the longitudinal direction of the chain case 43, and has a driving sprocket 53a and a driven sprocket 54
A pair of front and rear sprockets a are installed in parallel, and the drive sprocket 53a thereof is rotationally driven by a forward/reverse rotation motor 55a connected to a rotating shaft 52a. The driven sprocket 54a is loosely engaged with the rotating shaft 52a.

Reference numeral 52b denotes a rotating shaft which is located corresponding to the other remaining support column 13b and which is also supported by a bearing at the other longitudinal end of the chain case 24, and which also has a driving sprocket 53b and a driven sprocket 54b.
are installed in a front-back positional relationship.
The drive sprocket 53b is connected to the rotating shaft 5.
The driven sprocket 54b is loosely fitted onto the rotating shaft 52b, while the driven sprocket 54b is rotationally driven by a forward/reverse rotating motor 55b connected to the rotating shaft 52b.

In other words, the chain 3 at the front position described above
Similar to the hanging mechanism of Nos. 8 and 40, both supports 13a and 1
3b, the left column 13
A driving sprocket 53a on a rotating shaft 52a located corresponding to the column a and a driven sprocket 54b on another rotating shaft 52b located facing the right column 13b form a pair, and both sprockets 53a,
An endless chain 56 is wound between the motors 54b and 54b, and the left motor 55a rotates the drive sprocket 53a.
It is designed to be circulated by the system. Moreover, the chain 56 can be separated and adjusted by adjusting screw rods 57 attached to both ends of the left column 13a.
to the fixed piece 51a of the leg plate 46a hanging from the
They are connected in an endless state of tension.

Further, a driven sprocket 54a on the rotating shaft 52a located corresponding to the same left column 13a and a driving sprocket 53b on the rotating shaft 52b facing the right column 13b form a pair, and both sprockets 54a, 53b A separate endless chain 58 is also wound between them, and the chain 58 is circulated by the right motor 55b which rotationally drives the drive sprocket 53b. . The chain 58 is also integrally connected to the fixed piece 51b of the leg plate 46b hanging from the right column 13b by means of adjusting screw rods 57 fixed at both ends.

Therefore, as is clear from FIGS. 18 and 19, the left motor 55a circulates the chain 56 suspended on the drive sprocket 53a, so that the right column 13b is connected to the left column 13a.
On the other hand, by rotating the motor 55b on the right side and circulating the chain 58 stretched over the drive sprocket 53b, the motor 55b on the right side can be rotated and The left column 13a can be slid along the slide guide rail 42 by pulling the left column 13a toward the column 13b.

In either case, the motors 55a, 55b
By rotating in the opposite direction, both the supports 13a,
13b can also be slid laterally to the left and right in order to push them apart. The pillar 1
3a, 13b and beams 14a, 14b are integrally connected to each other in advance, as described above.
It goes without saying that the slide drive motors 55a, 55b of the pillars 13a, 13b and the slide drive motors 37a, 37b of the beams 14a, 14b are designed to rotate in synchronization with each other. These motors 37a, 37b, 55
The operation panel including the start switch of a, 55b, etc.
It is integrated with the operation panel for the motors 17a and 17b described above, and is manually operated by the operator.

In addition, the motor 55 for the pillars 13a and 13b
a and 55b are also transmitted via transmission means such as bevel gears,
Rotating shaft 52 of drive sprocket 53a, 53b
a, 52b. 59,59
is a fixing nut for the adjusting screw rods 57, 57, and by moving the screw rods 57, 57 forward and backward,
Of course, the chains 56 and 58 can be attached and detached and their tension can be adjusted.

Furthermore, 60a and 60b are both supports 13a and 13b.
A pair of left and right connecting cables corresponding to the above, specifically made of wire rope, etc., in order to prevent and control the upper ends of the pillars 13a and 13b from being tilted and distorted during the above-mentioned sliding action, as follows. It is arranged in a rolling manner.

That is, in FIGS. 9 to 13 as well as FIGS. 18 and 19, 61a and 61b are fitted onto the rotation shafts 52a and 52b of the above-described driving sprockets 53a and 53b so as to be freely movable in the same manner as the driven sprockets 54a and 54b. The pulled pulleys 62a, 62b are positioned correspondingly to the pulleys 61a, 61b,
The movable guide pulleys 63, 63 are pivotally supported at the upper ends of both struts 13a, 13b, and the cables 60a, 60
This is a connecting fitting that connects and fixes the cut-off lower end portions of b to the intermediate portions of the chains 56 and 58, respectively.

The separated upper end of one of the cables 60a is fixed to the upper end of the right support 13b,
Similarly, the cut-off lower end of the cable 60a is attached to the left column 1.
3a on the rotating shaft 52a, and the rotating shaft 5 facing the right support column 13b.
The chain 56, which is wound between the chain 56 and the driven sprocket 54b on the chain 2b, is fastened and fixed via a connecting fitting 63, and the middle part of the cable 60a is also connected to the left support 13a. The guide pulley 62a, which is pivotally supported at the upper end, and the pulley 61a on the rotating shaft 52a, which is positioned directly below the guide pulley 62a, are wound around the guide pulley 62a in a U-shape.

In addition, the other remaining cable 60b has its cut-off upper end secured to the upper end of the left-hand column 13a, and the cut-off lower end of the cable 60a is attached to the right-hand column so as to form a U-shape as a whole. 13b, and the driven sprocket 54a on the rotating shaft 52a facing the left column 13a.
A guide pulley 62b is connected to the guide pulley 62b through the guide pulley 62b, and the middle part of the cable 60b is pivotally supported on the upper end of the right support 13a, and a pulley 61b on the rotating shaft 52b facing directly below the guide pulley 62b. It is wrapped around everything.

Therefore, as mentioned above, the left motor 55a
When the right column 13b is slid toward the left column 13a by the rotating action of the chain 56 suspended on the drive sprocket 53a, the chain 56
The lower end portion is connected to the right support column 13b, and the upper end portion is connected to the right support column 13b.
As the chain 56 rotates, the upper end of the right strut 13b is pulled toward the left strut 13a, and at the same time, the upper end is attached to the left strut 13a. The other fixed cable 60b is set in such a manner that its midway portion engages with the floating roller shaft 47a of the left column 13a and is always maintained in a tensioned state. Even so, the upper end of the right support column 13b is drawn toward the left support column 13a.

Also, when the right motor 55b rotates the chain 58 suspended on the drive sprocket 53b and slides the left column 13a toward the right column 13b,
The same effect as described above can be obtained only by reversing the functions of the cables 60a and 60b.

The chain case 43 is a slide guide rail 42
are fixed in parallel at the lower position of the case 4.
On the rotating shafts 52a, 52b in 3, cables 60a,
The wrapping pulleys 61a, 61b of 60b are attached, and the idle rollers 48a, 4 roll on the slide guide rail 42 at the upper stage position.
8b is supported by its roller shafts 47a, 47b in a so-called dual-supported state. The middle portions of the cables 60a, 60b wrapped around the pulleys 61a, 61b, 62a, 62b can be hooked and engaged, and the cables 60a, 60b can be hooked and engaged.
This means that a and 60b can always be kept in tension.

Needless to say, the cables 60a, 60b are introduced into the hollow interior of the support columns 13a, 13b, and are wound around guide pulleys 61a, 62b that are mounted on shafts inside the support columns 13a, 13b. If there is no risk of distortion of the inclination of the cables, the wrapping of the cables 60a and 60b may be omitted. In addition, a shielding cover S2 such as a double door or an accordion curtain will be attached to the back surface of the cargo hold. In that case, the opening/closing doors are pivotally attached to both the pillars 13a, 13b by hinges, and the curtains are hung from the cables 60a, 60b, or are slidably attached to the pillars 13a, 13b. It can be installed by The other reference numeral 64 is an enclosure wainscot that is pivotally attached to the loading platform 10 so as to be able to rise and fall freely, and in its upright state is fixed to the frame plate 12 and the pillars 13a and 13b with locking metal fittings.

<Function> According to the opening/closing mechanism described above, where the ceiling surface and both side surfaces of the cargo compartment are configured to be able to be opened and closed,
The opening/closing method based on the configuration is as follows.

That is, in the case of opening the right side surface, first, the support shaft 15b installed on the right beam 14b is rotated by the corresponding right forward/reverse rotating motor 17b as shown in FIG. arrow A1
The right side cover frame 18b is rotated in the direction shown by , and while lifting the right side cover frame 18b from the unfolded state, the right side cover frame 18b is changed to a lying state where it is folded over the ceiling cover frame 21, and the right side surface is fully opened.

Next, the rotation shaft 3 located corresponding to the left beam 14a
The driving sprocket 35a on the rotary shaft 4a is connected to the rotating shaft 52a by the forward/reverse rotating motor 37a connected to the rotating shaft 34a, and the driving sprocket 53a on the rotating shaft 52a corresponding to the left column 13a is also connected to the rotating shaft 52a. Connected forward/reverse rotation motor 5
At the same time, the endless chains 38 and 56 are rotated in the normal rotation direction shown by the arrow B1 in FIGS. Let it happen.

By doing so, the beam 14b on the right side and the beam 14b on the right side are
and the pillar 13b are the slide guide rails 27, 42.
along the arrow D in FIGS.
In this case, the ceiling cover frame 21 is moved from the unfolded state to
It automatically changes to a mountain-shaped bend, so to speak, and the ceiling surface also opens completely at the same time.

Conversely, when shielding the ceiling surface and right side surface again, the forward and reverse rotation motor 3 is used to rotate the endless chains 38, 56 in the opposite direction.
7a and 55a in the reverse direction, and while the ceiling cover frame 21 is laid down in the unfolded state, the right beam 14b and the support column 13b are separated from the left side beam 14b, and then the support shaft of the right side cover frame 18b is moved. 15b, its forward and reverse rotation motor 17
The right side cover frame 18b may be reversed by driving in the reverse direction of b, and the right side cover frame 18b may be returned to the unfolded hanging state again.

On the other hand, when opening the left side surface, the support shaft 15a installed on the left beam 14a is
The forward/reverse rotation motor 17a on the left side rotates it in the direction shown by arrow A2 in FIG. 14, lifting the left side cover frame 18a from the unfolded state and changing it to a lying state where it is folded onto the ceiling surface. First, fully open the left side.

After that, the drive sprocket 35b on the rotation shaft 34b facing the right beam 14b and the drive sprocket 53b on the rotation shaft 52b facing the right support column 13b are connected by the forward and reverse rotation motors 37b and 55b located corresponding to them. The chains 40 and 58 are synchronously rotated in the normal rotation direction shown by arrow B2 in FIGS. 16 and 18, and the chains 40 and 58 are rotationally driven in the direction shown by arrow C2 in both figures.

If you do that, now the right beam 14b and the pillar 13
With respect to b, those on the left side slide along the slide guide rails 27, 42 in the direction shown by the arrow D2 in FIGS.
In the process, the ceiling cover frame 21 also automatically changes its standing position from the unfolded state to the bent state, and the ceiling surface is also fully opened. Needless to say, if the ceiling surface and left side surface are to be shielded again, the forward and reverse rotation motors 17b, 37b, and 55b may be driven in the reverse direction in the same manner as described above.

If the shielding cover S2 on the back surface is an accordion-style curtain as described above, it will open and close without any trouble in response to the above-mentioned action, and if it is a double-sided opening/closing door, that door will be opened first. This can be achieved without interfering with the opening/closing action described above.

<Effects of the Invention> As described above, in the present invention, as a method for opening and closing the cargo compartment of a vehicle, the frame plate 12 is fixed and erected at the front end of the cargo platform 10 in a cargo vehicle, and the frame plate 12 is also erected from the rear end of the cargo platform 10. The pair of left and right columns 13a, 13b extend horizontally between the front and rear of the frame plate 12 and both columns 13a, 13b, and have their front ends facing the upper end of the frame plate 12, and their rear ends. is pillar 1
A pair of left and right beams 14a and 14b, which are connected and integrated in advance to the upper ends of the frame plates 3a and 13b, form the basic framework of the cargo compartment, and extend along the left and right lateral directions to the upper ends of the frame plates 12. The slide guide rail 27 and the chain case 24 are fixedly installed in a stacked state in a vertical positional relationship, and both beams 14 are attached to the slide guide rail 27.
A required number of idle rollers 30a, 30b, 32a, 32b pivotally supported at the front ends of the chain case 24 are engaged with each other, and a pair of endless rollers 30a, 30b, 32a, 32b are housed in the chain case 24 in a parallel state in a front-back position relationship. Chain 38,40
, and the corresponding forward/reverse rotation motors 37a, 3
7b, so as to be able to rotate and drive separately, and the front ends of both beams 14a, 14b are separately fixedly connected to the middle parts of both chains 37, 40, and on the other hand, the rear end of the loading platform 10. In this case, a slide guide rail 42 and a chain case 43 extending in the left and right directions are also fixedly installed in a stacked state, and both supports 13 are attached to the slide guide rail 42.
A required number of floating rollers 48a, 48b, 50a, 50b pivotally supported at the lower ends of the chains 48a, 13b are engaged with each other, and a pair of endless chains 56, which are also accommodated in a parallel state in the chain case 43, 58, so that they can be rotated separately by the corresponding forward and reverse rotation motors 55a and 55b, and both columns 1 are connected to the middle part of both chains 56 and 58.
Motors 37a and 3 for the beams 14a and 14b are connected by fixing the lower ends of 3a and 13b separately.
7b and the motor 55a for the pillars 13a and 13b,
55b and the chains 38, 4.
By rotationally driving the beams 14a, 14b and pillars 13a, 13b, which have been connected and integrated in advance, either the left or right side is pulled towards or separated from the remaining position of the other one. , because it is designed to slide in the left and right directions along the slide guide rails 27 and 42,
The problems of the conventional technology mentioned at the beginning are completely solved, and there is no need to pay special attention, and it is possible to load and unload cargo smoothly and efficiently with peace of mind at all times, regardless of the type and size of the cargo. It is not subject to any restrictions such as size. Regarding the opening/closing operation, motors 37a, 37b, 55a, 55b
Anyone can do it easily by simply starting it with a switch.

In addition, due to its structure as a cargo compartment opening/closing mechanism, it includes a frame plate 12 fixedly erected at the front end of the cargo platform 10 of the cargo vehicle, and a pair of left and right columns 13a, 13b that similarly stand up from the rear end of the cargo platform 10. It extends horizontally between the front and back of the frame plate 12 and the support columns 13a, 13b, and its front end faces the upper end of the frame plate 12, and its rear end faces the upper end of the support columns 13a, 13b. A pair of left and right beams 14a and 14b that are connected and integrated in advance, a chain case 24 fixedly installed to the upper end of the frame plate 12 in an extending state along the left and right lateral directions, and the upper wall surface of the case 24. A slide guide rail 27 is installed and integrated into the chain case 24, and beams 14a,
Corresponding to the left and right pair of 14b, the shafts are mounted parallel to each other, and separate forward and reverse rotation motors 37a and 37b are provided.
A pair of left and right rotating shafts 34 rotationally driven by
a, 34b, driving sprockets 35a, 35b fixedly mounted on the respective rotating shafts 34a, 34b, a pair of front and rear driven sprockets 36a, 36b loosely coupled, and one drive on both rotating shafts 34a, 34b. A pair of front and rear endless chains 38, 40 are installed so as to wrap the sprockets 35a, 35b and the remaining driven sprockets 36a, 36b in parallel between the left and right sides thereof, and the rear end of the loading platform 10. Furthermore, the slide guide rail 42 is also laid in an extending state along the left and right lateral directions, the chain case 43 is fixedly integrated with the lower wall surface of the rail 42, and the support columns 13 are installed at both ends of the chain case 43.
Corresponding to the left and right pair of a and 13b, the motors 55a and 55b are rotatably supported in parallel, and have separate forward and reverse rotation motors 55a and 55b.
A pair of left and right rotating shafts 52 rotationally driven by
a, 52b, drive sprockets 53a, 53b fixedly mounted on the respective rotating shafts 52a, 52b, and a pair of front and rear driven sprockets 54a, 54b loosely coupled, and one drive on both rotating shafts 52a, 52b. The sprockets 53a, 53b and the remaining driven sprockets 54a, 54b are paired, and a pair of front and rear endless chains 56, 58 are installed in a parallel manner between the left and right sides of the sprockets; A required number of idle rollers 30a, 30b, 32 each pivotally supported at the front end of the roller 14b.
a, 32b are engaged with the slide guide rail 27 on the frame plate 12, while both columns 13a, 13b
The required number of idler rollers 4 each pivotally supported at the lower end of the
8a, 48b, 50a, 50b are engaged with the slide guide rail 42 on the loading platform 10, and the front ends of both beams 14a, 14b are similarly connected to the frame plate 1.
While each is fixedly connected to the middle part of chains 56 and 58 installed in parallel in the chain case 43 on 2,
The lower ends of both pillars 13a, 13b are fixedly connected to the middle parts of chains 38, 40, which are also installed in parallel in the chain case 24 on the loading platform 10, respectively, and motors 37a, 3 for the beams 14a, 14b are connected.
7b and the motor 55a for the pillars 13a and 13b,
55b and the chains 38, 4.
By rotationally driving the beams 14a, 14b and pillars 13a, 13b, which have been connected and integrated in advance, either the left or right side is pulled towards or separated from the remaining position of the other one. , the cargo compartment can be opened and closed by sliding it in the left and right directions along the slide guide rails 27 and 42, so for example, the slide guide rail 27 on which the beams 14a and 14b are to be slid, the chain case 24, and the endless Necessary mechanisms such as the chains 38, 40, motors 37a, 37b for driving their circulation, and the slide guide rail 42, chain case 43, chains 56, 58, and motors 55a, 55 on which the columns 13a, 13b are to be slid in the same way.
Manufacture and make the necessary mechanisms such as b identical to each other.
This means that it can be processed, which is extremely useful for assembly, maintenance/inspection, parts replacement, etc.

Further, a slide guide rail 27 and a chain case 24 are laid and integrated at the upper end of the frame plate 12, and the slide guide rail 27 moves the two beams 14a, 14b through floating rollers 30a, 30b, 32a, 32b. Since the front end is configured to be engaged and supported in a rollable manner, it is more effective than a structure in which, for example, a total of four columns (one pair at the front and one at the front) are slid while all are standing up from the loading platform 10. The sliding action is extremely stable, and although it can be opened and closed smoothly, it can also be used as a rigid frame for a cargo compartment.

In addition, as explained based on the illustrated embodiment, the connecting cables 60a, which are interlocked with the above-mentioned sliding action,
60b is also rolled up and installed, and supports 13a, 13b are installed.
If the upper end is regulated and held without being tilted and distorted, in combination with the above structure, an even more appropriate function of opening and closing the cargo compartment can be obtained, and the necessary parts to be added for this purpose are extremely simple. It can be said that its effectiveness can be further increased.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic side view of a freight vehicle to which the present invention is applied, Fig. 2 is a plan view thereof, and Fig. 3 is a second
A plan view showing the process of opening and closing action corresponding to Fig. 4.
The figure is an enlarged sectional view taken along line 4-4 in Fig. 1, Fig. 5 is a partial enlarged sectional view taken along line 5-5 in Fig. 2, and Figs. 6 and 7 are taken along line 6-6 in Fig. 5. Each partially cutaway sectional view along the line 7-7, Figure 8 is a partially cutaway sectional view showing the sliding state of the beam corresponding to Figure 6, and Figure 9 is a partially cutaway sectional view taken along the line 9-9 in Figure 2. Partially enlarged cross-sectional view, 1st
Figures 0 to 12 are lines 10-10 and 11-11 in Figure 9.
Fig. 13 is a partially cutaway sectional view showing the sliding state of the support column corresponding to Fig. 10, and Fig. 14 is a rear view showing the opening process of the side surface. Action explanatory diagram as seen from the 1st
Figure 5 is an explanatory diagram of the process of opening the ceiling surface, also seen from the rear; Figures 16 and 17 are explanatory diagrams of the sliding action of the beam, viewed diagonally from behind; Figures 18 and 1
FIG. 9 is a perspective view similarly seen diagonally from the rear to show the sliding action of the struts. 10... Loading platform, 12... Frame board, 13a, 13b
...Strut, 14a, 14b...Beam, 15a, 15
b... Support shaft, 17a, 17b, 37a, 37b,
55a, 55b...motor, 18a, 18b...
...Side cover frame, 21...Ceiling cover frame, 24,43...Chain case, 27,4
2...Slide guide rail, 28a, 28b,
46a, 46b... leg plate, 30a, 30b, 32
a, 32b, 48a, 48b, 50a, 50b...
...Idle roller, 33a, 33b, 51a, 51
b... Fixed piece, 34a, 34b, 52a, 52b
... Rotating shaft, 35a, 35b, 53a, 53b...
...Drive sprocket, 36a, 36b, 54a,
54b...Driver sprocket, 38, 40, 5
6,58...Chien, 39,39,57,57...
...screw rod, 60a, 60b...cable, 61a, 6
1b, 62a, 62b...pulley, 63, 63...
Connecting fittings.

Claims (1)

[Scope of Claims] 1. A frame plate 12 fixedly erected at the front end of a loading platform 10 in a freight vehicle, a pair of left and right columns 13a and 13b also standing from the rear end of the loading platform 10, and a frame plate 12 and both sides. It extends horizontally between the front and back of the columns 13a and 13b, and its front end faces the upper end of the frame plate 12, and its rear end faces the column 1.
A pair of left and right beams 14a and 14b, which are connected and integrated in advance to the upper ends of the frame plates 3a and 13b, form the basic framework of the cargo compartment, and extend along the left and right lateral directions to the upper ends of the frame plates 12. The slide guide rail 27 and the chain case 24 are fixedly installed in a stacked state in a vertical positional relationship, and both beams 14 are attached to the slide guide rail 27.
A required number of idle rollers 30a, 30b, 32a, 32b pivotally supported at the front ends of the chain case 24 are engaged with each other, and a pair of endless rollers 30a, 30b, 32a, 32b are housed in the chain case 24 in a parallel state in a front-back position relationship. Chain 38,40
, and the corresponding forward/reverse rotation motors 37a, 3
7b, so as to be able to rotate and drive separately, and the front ends of both beams 14a, 14b are separately fixedly connected to the middle parts of both chains 37, 40, and on the other hand, the rear end of the loading platform 10. In this case, a slide guide rail 42 and a chain case 43 extending in the left and right directions are also fixedly installed in a stacked state, and both supports 13 are attached to the slide guide rail 42.
A required number of floating rollers 48a, 48b, 50a, 50b pivotally supported at the lower ends of the chains 48a, 13b are engaged with each other, and a pair of endless chains 56, which are also accommodated in a parallel state in the chain case 43, 58, so that they can be rotated separately by the corresponding forward and reverse rotation motors 55a and 55b, and both columns 1 are connected to the middle part of both chains 56 and 58.
Motors 37a and 3 for the beams 14a and 14b are connected by fixing the lower ends of 3a and 13b separately.
7b and the motor 55a for the pillars 13a and 13b,
55b and the chains 38, 4.
By rotationally driving the beams 14a, 14b and pillars 13a, 13b, which have been connected and integrated in advance, either the left or right side is pulled towards or separated from the remaining position of the other one. A method for opening and closing a cargo compartment of a vehicle, characterized in that the cargo compartment is opened and closed by sliding in the left and right directions along the slide guide rails 27 and 42. 2. A frame plate 12 fixedly erected at the front end of the loading platform 10 in a freight vehicle; A pair of left and right columns 13a, 13b also standing from the rear end of the loading platform 10; The frame plate 12 and both columns 13a, 13b. A pair of left and right columns extending horizontally between the front and rear of the frame plate 12, with their front ends facing the upper end of the frame plate 12, and whose rear ends are connected and integrated in advance to the upper ends of the columns 13a and 13b. beams 14a and 14b, a chain case 24 fixedly installed to the upper end of the frame plate 12 in an extending state along the left and right lateral directions, and a slide guide rail 27 laid and integrated on the upper wall surface of the case 24. , At both ends of the chain case 24, beams 14a,
Corresponding to the left and right pair of 14b, the shafts are mounted parallel to each other, and separate forward and reverse rotation motors 37a and 37b are provided.
A pair of left and right rotating shafts 34 rotationally driven by
a, 34b, driving sprockets 35a, 35b fixedly mounted on the respective rotating shafts 34a, 34b, a pair of front and rear driven sprockets 36a, 36b loosely coupled, and one drive on both rotating shafts 34a, 34b. A pair of front and rear endless chains 38, 40 are installed so as to wrap the sprockets 35a, 35b and the remaining driven sprockets 36a, 36b in parallel between the left and right sides thereof, and the rear end of the loading platform 10. Furthermore, the slide guide rail 42 is also laid in an extending state along the left and right lateral directions, the chain case 43 is fixedly integrated with the lower wall surface of the rail 42, and the support columns 13 are installed at both ends of the chain case 43.
Corresponding to the left and right pair of a and 13b, the motors 55a and 55b are rotatably supported in parallel, and have separate forward and reverse rotation motors 55a and 55b.
A pair of left and right rotating shafts 52 rotationally driven by
a, 52b, drive sprockets 53a, 53b fixedly mounted on the respective rotating shafts 52a, 52b, and a pair of front and rear driven sprockets 54a, 54b loosely coupled, and one drive on both rotating shafts 52a, 52b. The sprockets 53a, 53b and the remaining driven sprockets 54a, 54b are paired, and a pair of front and rear endless chains 56, 58 are installed in a parallel manner between the left and right sides of the sprockets; A required number of idle rollers 30a, 30b, 32 each pivotally supported at the front end of the roller 14b.
a, 32b are engaged with the slide guide rail 27 on the frame plate 12, while both columns 13a, 13b
The required number of idler rollers 4 each pivotally supported at the lower end of the
8a, 48b, 50a, 50b are engaged with the slide guide rail 42 on the loading platform 10, and the front ends of both beams 14a, 14b are similarly connected to the frame plate 1.
While each is fixedly connected to the middle part of chains 56 and 58 installed in parallel in the chain case 43 on 2,
The lower ends of both pillars 13a, 13b are fixedly connected to the middle parts of chains 38, 40, which are also installed in parallel in the chain case 24 on the loading platform 10, respectively, and motors 37a, 3 for the beams 14a, 14b are connected.
7b and the motor 55a for the pillars 13a and 13b,
55b and the chains 38, 4.
By rotationally driving the beams 14a, 14b and columns 13a, 13b, which have been connected and integrated in advance, either the left or right side of the beams 14a, 14b and columns 13a, 13b are pulled toward or separated from the remaining position of the other beam. A cargo compartment opening/closing mechanism for a vehicle, characterized in that the cargo compartment can be opened and closed by sliding in the left and right directions along the slide guide rails 27 and 42.