JP4433431B2 - Cylinder pin mounting structure of wing lifting cylinder in wing vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a cylinder mounting pin of a wing opening / closing drive cylinder in a wing roof.
[0002]
[Prior art]
A so-called wing vehicle (FIG. 4) is used for transporting cargo that needs to be prevented from being damaged by rain and dew. In this type of vehicle, a hollow beam member having a quadrangular cross section, usually called a center beam, is installed above the cargo bed floor, substantially parallel to the longitudinal center line of the vehicle body, and on both sides of the beam member. A pair of wings whose cross section in the vehicle width direction has an L-shaped cross section is pivotally mounted by a hinge so that the wing can be pivoted up and down by a hydraulic actuator, and the cargo compartment on the loading platform is opened and closed. ing.
And the said center beam is fixed to the center of the gate structure provided in the front-and-rear end of the loading platform, and the both ends are fixed and it is passed in the vehicle body longitudinal direction.
[0003]
FIG. 4 is a perspective view of a known wing vehicle. Reference numeral 18 denotes a pair of wing roofs having a L-shaped cross-sectional shape in the vehicle width direction, and is usually made of an aluminum alloy or the like for weight reduction. The inner edge of the vehicle body is hinged to the center beam 15 by a hinge 18. Reference numeral 19 denotes a side tilt whose lower edge is hinged to the side edge of the loading platform 12 by a hinge 20. Reference numeral 21 denotes a rear door whose side edges are attached to the rear gate structure side pillars by hinges 22, and 21 ′ is a front wall fixed to the front gate structure. Accordingly, the wing roof 18 is rotated downward around the hinge 16 by the hydraulic cylinder 23 or the like provided at the upper part of the front / rear section structure, and the side door 19 is raised and the rear door 21 is closed. Thus, a substantially sealed cargo chamber can be formed on the loading platform 12.
[0004]
Conventionally, in such a wing vehicle, the hydraulic cylinder 23 for raising and lowering the wing is attached to a cylinder top bracket 25 provided on the inner side of the roof rail 24 in a pin hole of the end fitting 26 of the cylinder 23 as shown in FIGS. And the pin 27 on the cylinder end fitting 26 side and the hole 27 on the top bracket 25 side are aligned, and then the cylinder pin 29 is inserted from the hole 28 of the roof rail 24, and C-rings are attached to both ends of the pin 29. It was a fixed structure. In this case, if the cores of the holes 27, 28 and the like are slightly displaced, the pins 29, 30 (FIG. 3) are very difficult to put in, and the work becomes extremely difficult, thereby taking extra work time. In FIG. 2, reference numeral 24a denotes a side post of the wing roof, which is substantially orthogonal to the roof rail 24. 31 is a roof rail bracket and 32 is a cylinder top bracket spacer.
[0005]
[Problems to be solved by the invention]
It is an object of the present invention to provide a structure capable of facilitating cylinder pin mounting work, improving workability, and shortening work time thereby.
[0006]
[Means for Solving the Problems]
A pair of cylinder pins 37 inserted into the front end fitting 26 of the hydraulic cylinder 23 attached to the front or rear gate structure, and U-shaped grooves 36 fixed in parallel in the roof rail 34 and supporting both ends of the cylinder pins 37. After the cylinder top bracket 35 and the cylinder pin 37 are inserted into the U-shaped groove 36 of the cylinder top bracket 35, the cylinder pin 37 from the lower side in a non-rotating state in which rotation of the cylinder pin 37 with respect to the U-shaped groove 36 is prevented. The bottom plate 38 is configured to hold the bottom plate 38 and the bolt 39 that fixes the bottom plate 38 to the cylinder top bracket 35. The cylinder pin 37 is provided with a semicircular cutout 37a, and the semicircular cutout 37a is opposed to the bottom plate 38 to form a detent structure. A U-shaped groove 36 into which the cylinder pin 37 is fitted is provided on the bottom plate 38 side.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A description will be given with reference to FIG. Reference numeral 34 denotes a roof rail, and the end fitting 26 of the hydraulic cylinder 23 is pin-coupled in the roof rail 34 with the following structure. First, each of the pair of cylinder top brackets 35 is made of flat steel, and a U-shaped groove 36 is provided at the center. The U-shaped groove 36 is formed as a semicircular cutout portion 37a by shaving about 25 mm at both ends of the pin at a depth of about 4 mm in parallel with the pin axis as a detent for the pin 37.
[0008]
First, the cylinder pin 37 is inserted into the end fitting 26 side of the cylinder 23, the half-moon notch 37 a of the pin 37 is parallel to the lower surface of the cylinder top bracket 35, and the cylinder pin 37 is inserted into the U-shaped groove 36 of the cylinder top bracket 35. After that, the bottom plate 38 is applied from the lower side, and the bottom plate 38 is fixed to the cylinder top bracket 35 with bolts 39 (FIG. 1, C).
With the above configuration, the cylinder pin 37 is prevented from rotating because the half-moon-shaped notch 37 a is in contact with the bottom plate 38, and the cylinder end fitting 26 is rotatably fixed to the pair of cylinder top brackets 35. Can do.
[0009]
Therefore, when the hydraulic cylinder 23 is extended, the roof rail 34 can be pushed up via the tip fitting 26 and the cylinder pin 37 to open the wing roof. Conversely, when the hydraulic cylinder 23 is contracted, the wing roof is closed.
In the above configuration, a U-shaped groove may be provided on the bottom plate 38 side.
[0010]
【The invention's effect】
As described above, after the cylinder pin 37 is attached to the end fitting 26 of the hydraulic cylinder, both end portions of the cylinder pin 37 are inserted into the U-shaped groove 36 provided in the cylinder top bracket 35 fixed to the wing rail side, and the bottom is viewed from the inside of the warehouse. When the plate 38 is applied and the four bolts 39 are screwed in, the process is complete. As described above, since it is not necessary to align the cylinder pin with the hole on the bracket side or the hole of the end fitting of the hydraulic cylinder, the mounting can be performed very easily as compared with the conventional mounting operation. Accordingly, the work efficiency is further improved, and the construction is preferable from the viewpoint of work safety.
[Brief description of the drawings]
1A and 1B show a structure of a cylinder pin mounting portion of the present invention, in which FIG. 1A is a perspective view, FIG. 1B is a side view, FIG. 1C is a plan view, and FIG.
FIG. 2 is a perspective view showing a known cylinder pin mounting portion structure.
3A is a plan view of a known cylinder pin mounting portion, FIG. 3B is a right side view of FIG. 3A, and FIG. 3C is a top view of FIG.
FIG. 4 is an overall perspective view of a wing vehicle.
[Explanation of symbols]
12 Loading platform 15 Center beam
16 Hinge 18 Wing roof
20 Hinge 21 Rear door
21 'front wall 22 hinge
23 Hydraulic cylinder 24 Roof rail
24a Side post 25 Cylinder top bracket
26 Tip bracket 27/28 hole
29 ・ 30 Cylinder pin 31 Roof rail bracket
32 Cylinder top bracket spacer
34 Roof rail 35 Cylinder top bracket
36 U-shaped groove 37 Cylinder pin
37a Half-moon notch 38 Bottom plate
39 volts

Claims (3)

Inserted into the front end fitting (26) of the hydraulic cylinder (23) attached to the front or rear gate structure, and supported at the front end fitting (26) in a rotatable manner, both end portions thereof extend from the end fitting (26). A projecting cylinder pin (37), and a pair of cylinder top brackets (35) fixed in parallel in the roof rail (34) and provided with U-shaped grooves (36) supporting both ends of the cylinder pin (37); After inserting both ends of the cylinder pin (37) into the U-shaped groove (36) of the cylinder top bracket (35), the cylinder pin (37) is prevented from rotating with respect to the U-shaped groove (36). from below in stop state the bottom plate (38) for pressing the cylinder pin (37) consists of bolts (39) to said bottom plate (38) fixed to the cylinder top bracket (35) Cylinder pin mounting structure of the front end fitting (26) is rotatably supported by the cylinder top bracket (35) through said cylinder pin (37), cylinder wing lift at the wing vehicle. The cylinder pin (37) inserted into the end fitting (26) of the hydraulic cylinder (23) attached to the front or rear gate structure is fixed in parallel in the roof rail (34), and both ends of the cylinder pin (37) are connected to each other. A pair of cylinder top brackets (35) having a U-shaped groove (36) to be supported and the cylinder pin (37) are inserted into the U-shaped groove (36) of the cylinder top bracket (35), and then from the lower side. A bottom plate (38) for holding the bottom plate and a bolt (39) for fixing the bottom plate (38) to the cylinder top bracket (35),
Cylinder pin mounting of a wing lifting cylinder in a wing vehicle provided with a half-moon-shaped notch (37a) on the cylinder pin (37) and having the half-moon-shaped notch (37a) opposed to the bottom plate (38) Construction.   The cylinder pin mounting structure for a wing lifting cylinder in a wing vehicle according to claim 1 or 2, wherein a U-shaped groove (36) into which the cylinder pin (37) is fitted is provided on the bottom plate (38) side.

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