JP4325987B2 - Floor structure of van type trailer - Google Patents

Description

  The present invention relates to an elevating floor for increasing the loading efficiency of a van type trailer having a high floor portion and a low floor portion. More specifically, by providing an elevator floor on the van type trailer, it is possible to load the lower floor and the higher floor through the elevator floor as well as the lower floor, and the lower floor and the higher floor. The present invention relates to an elevating floor of a trailer that can be layered and can greatly increase the loading efficiency.

  2. Description of the Related Art Conventionally, a trailer for transporting a vehicle has a structure having a lower deck and an upper deck, and the upper deck moves up and down along a column. This is a multipurpose freight vehicle capable of transporting cargo other than the vehicle when the upper deck is lowered (see, for example, Patent Document 1).

  However, since such a trailer does not have a guide rail or the like for guiding a loading / unloading device such as a joroder (product name) on the lower deck or the upper deck, it may be possible to load luggage other than an engine-equipped vehicle such as a passenger car. The cargo handling is not easy.

  In addition, there is also known a device in which a hydraulic device and a hydraulic cylinder are accommodated in a front wall portion and a lift floor is moved up and down via a long wire (for example, see Patent Document 2).

  However, in this configuration, the lifting floor is carried out through a long lifting rope driven by a single hydraulic device provided on the front wall. However, the load on the lifting floor is unbalanced or the lifting force due to the rope is not reduced. It is not easy to always raise and lower a lifting floor having a large area in a parallel state by twisting or tilting the lifting floor due to factors such as equality. For this reason, problems such as breakage of the lift floor or breakage of the load have occurred.

Japanese Patent No. 3352266 Japanese Utility Model Publication No. 2001-180365

(1) In order to further improve the loading efficiency of a van type trailer having a high floor portion and a low floor portion, a lift floor that can be moved up and down is provided, and a van that can carry luggage on the high floor portion above the kingpin in the trailer. Providing mold trailers,
(2) And, on the high floor part and the lift floor, for example, there is a guide rail for the cargo handling device on the joroder (trade name), etc. Allowing the cargo to be handled continuously and consistently from the rear of the vehicle to the raised floor,
(3) Furthermore, even if the loading state of the load on the lift floor is uneven, the lift floor lifting drive device that can lift and lower the floor smoothly without tilting or twisting is provided. To do,
It is an object of the present invention to provide a van type trailer that can solve the above points.

(1) In a van type trailer having a front high floor portion and a lower rear lower floor portion, it can be moved up and down between a height position of the high floor portion and an upper position further than both. The slider is driven up and down by a plurality of hydraulic cylinders provided on the wall.
(2) The elevating floor has a guide rail for moving the cargo handling device on its upper surface.
(3) With the elevator floor lowered to the lowest position, the front end of the elevator floor is supported by the rear end of the elevated floor portion, and the upper surface of the elevator floor and the upper surface of the elevated floor portion are the same height. becomes the position, the elevating floor guide rail handling apparatus for moving, communicate with each other and the guide rails of the cargo apparatus for moving provided in the raised floor portion, and from the elevating floor enables consistent handling to the raised floor section .
(4) The slider is moved up and down by being guided by a slider guide post via front and rear and inner / outer direction guide rollers.
(5) The slider is supported on a spherical receiving portion formed on the top of the rod of the hydraulic cylinder.
(6) The raised height position of the elevating floor is adjusted by replacing the L-shaped stopper in the comb-shaped concave groove of the stopper block provided at the upper part of the slider guide post.
(7) The lifting floor is a coaxial hydraulic pump that drives four pumps with a single motor, and simultaneously feeds and drives a plurality of hydraulic cylinders on the left and right sides in the longitudinal direction of the vehicle.

  Since the elevating floor 5 that is always at the same height as the high floor portion 2 of the van type trailer can be moved up and down by the slider 18 that is lifted and lowered by the lift cylinders 35 provided on both side walls, the same height as the high floor portion 2 is provided. In the position, the integrated cargo handling of the high floor portion 2 and the lift floor 5 can be loaded on the low floor portion 4 when the lift floor 5 is raised, so that the loading efficiency can be further improved.

  In particular, the guide rails for loading and unloading devices such as joroders are provided on the lift floor 5 and the same guide rails are also provided on the high floor, and these are connected to enable consistent cargo handling. The van type trailer can be used very effectively.

  The elevating floor 5 is a simultaneous hydraulic pump that drives four pumps with a single motor installed under the floor. A plurality of, for example, four left and right lift cylinders, for example, four on the left and right sides of the vehicle, are simultaneously driven up and down equally. Since it did in this way, even if there exists a bias | inclination etc. of the load on the raising / lowering floor 5, it can raise / lower equally.

  The slider 18 for raising and lowering the elevating floor 5 can be stably raised and lowered in both the front and rear, inside and outside directions guided by the slider post via rollers.

  The slider 18 for raising and lowering the elevating floor 5 is supported by a spherical top surface formed on the top of the rod of the lift cylinder, so that it also greatly contributes to stable elevation.

Preferred embodiments will be described below with reference to the drawings.
FIG. 1 is a side view of a van type trailer having a high floor portion and a low floor portion according to the present invention.

  In FIG. 1, the van type trailer T includes a high floor portion 2 on an upper portion of a king pin 1 connected to a tractor (not shown) and a low floor portion 4 that is lowered by a stepped portion 3.

  The elevating floor 5 according to the present invention is supported at the rear end position of the high floor portion 2 at the lowermost position (the hatched position in FIG. 1). The elevating floor 5 is raised from the lowest position by a driving device described below, and a load (for example, confectionery loaded on a pallet) is formed in a space formed between the low floor portion 4 and the raised elevating floor 5. Etc.) can be loaded. Thus, it is possible to load a load through the lift floor 5 and the high floor portion 2 as well as the low floor portion 4. In general, the luggage is transported in a state where it enters the pallet 6. Since FIG. 1 is a refrigerator, the refrigerator 7 is mounted in the forefront, but it is needless to say that the present invention can be applied not only to a refrigerator but also to a general dry luggage trailer.

  The lift floor 5 will be described with reference to FIGS. 2 and 3. 2 is a plan view of the elevating floor 5, and FIG. 3 is a right end view taken along arrow X in FIG.

  In FIG. 2, the lifting floor 5 has a large number of cross members 8, and eight vertical members 9 are arranged in the longitudinal direction at the upper part of the cross members 8 so as to be perpendicular to them. Between the vertical members 9, which are paired to the left and right, a cargo handling device moving guide rail 10, for example, a reverse hat type joroder rail (see FIG. 3) for running a joroder (trade name) is attached.

  In FIG. 3, a Z-shaped side guide angle 11 is fixed to the side end of the lift floor 5, and as shown in FIG. 4, the lift floor side support device 13 that supports the side of the lift floor 5 is attached to the lift floor side support device 13. It is placed and supported on the provided support step 14. When supported on the support step 14, the bottom surface of the cross member 8 of the lift floor 5 and the bottom surface of the lift floor side support device 13 are flush with each other, and the end plate 12 of the lift floor 5 is lifted and lowered. It becomes flush with the upper surface of the floor side square member 16 fixed in the lower longitudinal direction of the side plate 15 of the floor side support device 13 (FIG. 4). At this time, the end portion of the end plate 12 of the lift floor protrudes laterally (see δ), and is in a state of being just in contact with the inner side surface of the floor side square member 16.

  FIG. 5 is a cross-sectional view of the low floor portion 4, the high floor portion 2, and the lift floor 5 as viewed from the rear of the trailer T. In this figure, a fixed roller 17 for cargo handling is attached in advance on the low floor portion 4 as shown in the figure, but there is no fixed roller on the lift floor 5 or the high floor portion 2 above, and the above-mentioned joroder (product) Only the cargo handling device moving guide rails 10 are provided for cargo handling. In the low floor portion 4 as well, it is not necessary to provide the fixed roller 17 in advance. Of course, only the rails can be used as in the case of the elevator floor or the high floor portion.

  Next, drive mechanisms provided on both sides of the van type trailer for raising and lowering the elevating floor 5 will be described.

  The elevating floor side support device 13 is fixed by a bolt or the like to a slider 18 driven by a hydraulic cylinder, which will be described below, and is pushed up by receiving hydraulic pressure sent from a hydraulic pump installed at the lower part of the vehicle.

  As shown in FIG. 7 (perspective view), the slider 18 has a bolt hole 20 on the back surface of the slider main body 19, and the side plate 15 (see FIG. 6) of the elevator floor side support device 13 with the bolt 21 through the hole 20. ). That is, when the slider 18 is driven by the hydraulic cylinder, the lifting floor side support device 13 moves up and down integrally with the slider 18.

  The slider 18 moves up and down while being guided by a slider guide post 22 (FIG. 10). The lower part of the slider guide post 22, that is, the part where the slider 18 does not slide, has a convex section and has a U-shaped groove 27 for guiding the inward / outward guide roller 24 as shown in FIG. Not. The upper part of the slider guide post 22, that is, the part where the slider 18 slides, has a shape as shown in FIG. 27.

  The slider 18 has a main body 19 in a box shape, and has bolt holes 20 (six in the illustrated example) to be fixed to the side plate 15 of the elevator floor side support device 13 (FIGS. 4 and 6B). These bolt holes 20 are integrally fixed with bolts 21.

  Front and rear direction guide rollers 23 and 23 for stable running in the X direction in FIG. In addition, the front and rear direction guide rollers 23 and 23 are provided with a pair of inner and outer direction guide rollers 24 and 24 for stable running in the Y direction in FIG.

  The front and rear direction guide rollers 23 and 23 are rotatably attached by roller pins 26 between brackets 25 and 25 fixed in parallel to both sides of the box-shaped main body 19. Similarly, the inner and outer direction guide rollers 24 are attached to the side portions of the main body 19 so as to be rotatable by roller pins.

  The front / rear direction guide roller 23 rolls on the bottom surface 27a of the U-shaped groove 27 provided on the side of the slider guide post 22 when the elevating floor 5 is raised and lowered as shown in FIGS. Then go up and down.

  Further, as shown in FIG. 15, the inward / outward direction guide roller 24 rolls up and down by rolling on the facing surface 27b of the U-shaped groove 27.

  Thus, the lift floor 5 is driven up and down as the slider 18 fixed to the side plate 15 of the lift floor side support device 13 moves up and down.

  The slider guide post 22 is fixed to the inner wall of the trailer via a guide post angle 28. As described above, the slider guide post 22 has a U-shaped groove 27 as shown in FIG. 12D because it is necessary to guide the raising and lowering of the slider 18 above the upper portion, that is, above the high floor portion 2. However, since there is no need for guidance at the lower part, it does not have a U-shaped groove as shown in FIG.

  In FIG. 16, reference numeral 29 denotes a stopper block. A stopper 33 can be inserted into the stopper block to position the lifted position of the slider 18. The stopper block 29 has a comb blade shape as shown in the front view of FIG. 16, and the base 30 is fitted and fixed to the notch 31 (FIG. 13C) of the slider post 19. Then, a leg portion 33 ′ of the stopper 33 shown in FIG. 16B is fitted into the concave groove 32 formed between the upper and lower comb blades 32 and the raised floor 5 is positioned.

  The stopper 33 is L-shaped as shown in FIG. 17, and a pair of left and right stoppers 33 are connected to both sides of a single stopper block connecting plate 34 by welding.

The stopper block 29 can be changed up and down by, for example, 30 mm increments by using the stopper block 29 as shown in (1), (2), and (3) of FIG. That is, in the case of (1), the support surface 33 ″ of the stopper 33 is at a position 60 mm from the top. When the stopper is rotated 180 ° and the leg 33 ′ of the stopper 33 is inserted into the uppermost concave groove 32, the support surface 33 ″ comes to a position 30 mm from the top. Further, as shown in FIG. 16B (3), if the stopper 33 is inserted by rotating the same groove 32 from the state of (2) by turning 180 °, the support surface 33 ″ will be at the highest position.
Now, although the raising / lowering floor 5 changes a raise position as mentioned above, the drive source which raises / lowers the raising / lowering floor 5 is demonstrated below.

  FIG. 18 shows a lift cylinder of the lift floor 5. The lift cylinder 35 is attached to the slider post 22 (FIG. 12) with upper and lower bolts 36. An oil supply inlet 37 is provided at the lower part of the lift cylinder 35, and a cylinder rod 38 is provided above the lift cylinder 35. This extends upward and pushes up the top of the main body of the slider 18. The top surface 39 of the cylinder rod 38 has a spherical shape (FIG. 18), and the spherical top surface 39 supports the top inner surface 40 of the main body 19 of the slider 18. It has flexibility.

  When pressure oil is supplied to the lift cylinder 35, the slider 18 supported by the top surface 39 of the cylinder rod 38 rises while being guided by the slider post 22 as the cylinder rod 38 extends. Since the elevating floor 5 is supported by the elevating floor side support device 13 integral with the slider 18, the elevating floor 5 also rises together with this lift cylinder.

  The raising / lowering floor 5 is raised at a desired height by inserting a stopper 33 at a desired height position among the plurality of comb-shaped grooves 32 of the stopper block 29 and lowering the cylinder rod 38. The slider is stopped by the support surface 33 ″ of the stopper 33 set at this position, and at the same time, the load of the elevating floor 5 is supported by the top surface 39 of the cylinder rod 38.

  In FIG. 21, reference numeral 41 denotes a coaxial pump that supplies hydraulic pressure to the lift cylinder 35. The coaxial pump 41 can drive a total of eight lift cylinders 35 addressed to the left and right four of the van trailer by equal oil feeding. With this coaxial pump 41, four lift cylinders 35 on the one side of the van trailer and eight lift cylinders 35 on the left and right sides can be operated evenly, and the lift floor 5 can be raised and lowered extremely smoothly.

In FIG. 21, the pressure oil from the coaxial pump 41 is discharged from four discharge ports 42. As shown in FIG. 22, the pressure oil discharged from the discharge port 42 is adjacent to the lift pumps A ₁ and B ₁ , A ₂ and B ₂ , A ₃ and B _3, and A ₄ and B ₄ in FIG. It is sent evenly to the two lift cylinders.

  Thus, for example, as shown in the figure, even if eight lift cylinders on the left and right sides are used, each of the two lift cylinders can be paired and oil can be fed evenly to the two lift cylinders 35 from the coaxial pump 41. Compared to the configuration in which the hydraulic pumps are individually provided for the lift cylinders, oil can be supplied extremely smoothly, and the lift floor 5 with an unbalanced load can be moved up and down smoothly.

(Elevating and lowering the lifting floor)
a) The elevating floor 5 is horizontally supported on the support step 14 of the elevating floor side support device 13 at the front end at the rear end of the high floor 2 and at both sides at both sides of the inner wall of the van trailer. In this state, since the upper surface of the elevating floor 5 and the upper surface of the raised floor portion 2 are flush with each other, a consistent cargo handling operation can be performed.
b) Next, the elevating floor 5 is raised upward.
i) Oil is supplied to the lift cylinders 35, and the eight right and left lift cylinders 35 are uniformly extended. Then, since the top inner surface 40 of the slider 18 is pushed up, the raising / lowering floor 5 is also pushed up through the raising / lowering floor side support device 13 integrated therewith. It is raised to a position above the stopper block 29.
c) At this time, the stopper 33 is manually inserted into the comb-shaped concave groove 32 of the stopper block 29, and the height position is adjusted in increments of 30 mm, for example.
d) After that, the lift cylinder 35 is pulled down and stopped when the elevating floor side support device 13 comes into contact with the upper surface of the stopper 33.
e) Thus, the elevating floor 5 is adjusted to a predetermined height position, and the load is supported by the lift cylinder 35. Therefore, it is possible to load not only on the elevating floor 5 but also between the elevating floor 5 and the lower floor portion 4. .
f) The lift floor 5 is again slightly lifted by the lift cylinder 35, the stopper 33 is pulled out from the comb-shaped concave groove 32 of the stopper block 29, and the lift cylinder 35 is lowered.
The elevating floor 5 is flush with the raised floor 2. In this state, integrated cargo handling is possible between the upper surfaces of the high floor portion 2 and the lift floor 5.

It is a side view of the van type trailer provided with the high floor part and low floor part concerning the present invention. It is a top view of a raising / lowering floor (however, the display of the guide rail 10 for cargo handling apparatus movement is abbreviate | omitted). FIG. 3 is an end view taken along arrow X in FIG. 2. Elevating floor and elevating floor side support device (right half) that supports it. The structure of the floor of a low floor part, a raising / lowering floor, and a high floor part is shown. (A) is a side view of an elevator floor side part support device, (b) is a view from arrow B in (a), and (c) is an enlarged view from arrow A in (a). The perspective view of a slider. The front view of a slider. The side view of a slider. The arrangement | positioning of the slider post inside a side wall is shown. (A) is side wall sectional view, (b) is a front view of the slider post (viewed from arrow A), (c) is a view taken from arrow B of (b), and (d) is a side view of the lifting floor side support device. (E) is a side view of the slider, and (f) is a state in which the slider is coupled to the lifting floor side support device. Slider post, stopper block and guide post angle. Single item drawing of slider post. Side wall sectional drawing. FIG. Slider block and stopper. Detailed view of the stopper. Lift cylinder. The operation state explanatory view of a lift cylinder. Cylinder lot front end part explanatory drawing. Coaxial pump. Hydraulic piping diagram.

Explanation of symbols

T-Ban type trailer 1 Kingpin 2 High floor 3 Stepped part 4 Low floor 5 Lifting floor 6 Pallet 7 Refrigerator 8 Cross member 9 Vertical member 10 Loading rail guide rail
11 Side guide angle 12 End plate
13 Lifting floor side support device 14 Supporting step (of lifting floor)
15 Side plate (of lifting floor side support device)
16 Floor side timber 17 Fixed roller
18 Slider 19 (Slider) body
20 bolt hole 21 bolt
22 Slider guide post 23 Longitudinal guide roller
24 Inside / outside guide roller 25 Bracket
26 Roller pin 27 U-shaped groove
28 Guide post angle 29 Stopper block
30 Base 31 Notch
32 Comb groove 33 Stopper
34 Stopper block connecting plate
35 Lift cylinder 36 bolt
37 Lubrication inlet 38 Cylinder rod
39 Top surface of cylinder rod
40 Top inner surface (cylinder rod top surface 39 contact part)
41 Coaxial pump 42 Discharge port

Claims (6)

A floor structure of a van-type trailer having a low floor section of the front of the raised floor portion and the rear side lower than this,
An elevator floor disposed above the low floor portion and capable of ascending and descending between a height position of the high floor portion and an upper position further than this ,
A slider driven by a plurality of hydraulic cylinders provided on both side walls to raise and lower the elevating floor ;
A guide rail for moving the cargo handling device provided on the upper surface of the elevating floor;
A guide rail for moving the cargo handling device provided on the upper surface of the raised floor,
With the elevator floor lowered to the lowest position, the front end of the elevator floor is supported by the rear end of the raised floor portion, and the upper surface of the elevator floor and the upper surface of the elevated floor portion are at the same height position, The guide rail of the raising / lowering floor communicates with the guide rail of the elevated floor portion to enable integrated cargo handling from the raising / lowering floor to the elevated floor portion.
A van type trailer floor structure . The van-type trailer floor structure according to claim 1, wherein a side portion of the elevating floor is placed and supported on a support step fixed to the slider. 2. The floor structure of a van type trailer according to claim 1, wherein said slider is guided by a slider guide post via front and rear and inner / outer direction guide rollers. The van type trailer floor structure according to claim 1, wherein the slider is supported on a spherical receiving portion formed on a rod top of a hydraulic cylinder. The van type according to claim 1, wherein the height of the lift floor is adjusted by replacing an L-shaped stopper in a comb-shaped concave groove of a stopper block provided on an upper portion of a slider guide post. Trailer floor structure . 2. The van-type trailer according to claim 1, wherein said elevating floor is a coaxial hydraulic pump that drives four pumps with a single motor, and simultaneously feeds and drives a plurality of hydraulic cylinders in the longitudinal direction of the vehicle at the same time. Floor structure .

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