JP2010179809A - Container trailer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To install a container in a position where both the axle load of a fifth wheel and the axle load of a travelling wheel are within a predetermined value range, and to smoothly perform a loading work using a cargo work machine such as a forklift. <P>SOLUTION: A deck 28 articulated with a main frame 12 by a parallel four-point supporting link 32 having a rotary shaft 30 extending in the fore-and-aft direction of a vehicle body is provided in a position between a rear bolster and a rear end 12a of the vehicle body. This enables use of the cargo work machine such as the forklift by raising the deck 28 to a height equal to that of a floor face inside the loaded container, when necessary. On the other hand, by keeping the deck 28 lowered to a housing position lower than the height except in the loading work, an interference between a door and the deck 28 is prevented when the door of the container opens and closes. Since the deck 28 is formed with a width smaller than a body width of the trailer, the deck 28 will not come out of the trailer to obstruct an operation in both the housing position and the raised position of the deck 28. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a container trailer.

Based on the international container standards established by ISO, there are 20-foot containers (20-foot containers) and 40-foot containers (40-foot containers). 40-foot type container trailers, 20-foot type container / 40-foot type container trailer.
When a 20-foot container is loaded on a 20-foot container / 40-foot container trailer, the center of gravity when the container is loaded is the specified value for both the axle weight of the fifth wheel and the axle of the traveling wheel. Placed in a position that fits in Therefore, since the main frame of the trailer extends further to the rear than the 20-foot type container placement position, the cargo handling work from the rear of the container with the container mounted on the trailer becomes extremely difficult. As a technique for solving such a problem, a container trailer has been developed in which a transfer plate for filling a step generated between a platform and a container is detachable as required (for example, Patent Document 1). reference).

JP 2000-016145 A ([0003], FIG. 8)

By the way, not only the 20-foot type container / 40-foot type container trailer but also the 20-foot type container trailer, the center of gravity when loading the container is the specified value for both the axle weight of the fifth wheel and the axle weight of the traveling wheel. It is necessary to place the container in a position that fits in the box. However, when the container is placed at a position that satisfies this condition, the rear end portion of the container may be located in front of the rear end portion of the trailer even in a 20-foot container trailer having a short overall length.
In such a case, in the 20-foot container dedicated trailer, as in the case of the 20-foot container / 40-foot container combined trailer, from the platform where the container trailer arrives at the time of cargo handling work to the floor in the container warehouse As a result, there is a difference in level between the platform and the deck of the container trailer, making it difficult for a forklift or other cargo handling machine to transfer smoothly.

  The present invention has been made in view of the above-mentioned problems. The object of the present invention is to provide a relatively short container trailer such as a 20-foot container trailer, and the center of gravity when the container is loaded is the axis of the fifth wheel. It is possible to place the container at a position where both the weight and the axle weight of the traveling wheel are within the specified value, and when necessary for cargo handling work, etc., it is equivalent to the floor surface of the loaded container By providing a container trailer that includes a deck that rises to a height and normally descends to a lower position, a cargo handling operation using a cargo handling machine such as a forklift is performed smoothly.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) Place the container on the main frame on which the gooseneck is formed, at the position where the center of gravity of the fifth wheel and the running wheel is within the specified values. A container trailer in which two pairs of front and rear bolsters to be placed are arranged on the main frame by a parallel four-point support link extending in the front-rear direction of the vehicle body at a position between the rear bolster and the rear end of the vehicle body. A container trailer which is connected and is provided with a deck capable of moving up and down with a difference in height between the upper surface of the bolster and the floor surface of the container.
The container trailer described in this section includes a deck connected to the main frame at a position between the rear bolster and the rear end of the vehicle body and connected to the main frame by a parallel four-point support link extending in the front-rear direction of the vehicle body. Sometimes, the deck is raised to the same height as the floor of the loaded container, enabling the use of a cargo handling machine such as a forklift. On the other hand, by lowering the deck to a lower storage position except during cargo handling work, the door and the deck are prevented from interfering when the container door is opened and closed.

(2) In the above item (1), the width of the deck is a container trailer that is formed narrower than the vehicle width of the trailer so as to be within the vehicle width of the trailer at both the retracted position and the raised position. 1)
In the container trailer described in this section, the width of the deck connected to the main frame by the parallel four-point support link whose rotation axis extends in the front-rear direction fits in the vehicle width of the trailer at both the retracted position and the raised position. Thus, since it is formed narrower than the vehicle width of the trailer, the deck does not protrude from the trailer at any of the retracted position and the raised position of the deck, and the operation is not hindered.

(3) In the above item (2), the deck is divided into two in the left-right direction of the vehicle width, and the vehicle width center side end portions of the left and right decks abut each other at the vehicle width center at the raised position. A container trailer in which each of the left and right decks is connected to a main frame by the parallel four-point support link (Claim 2).
In the container trailer described in this section, the vehicle width center side end portions of the left and right decks divided into two abut each other at the vehicle width center at the rising position, thereby forming a deck without a gap in the vehicle width direction. Is done. On the other hand, it falls in the storage position by being separated to the left and right. In addition, the weight of the deck alone is reduced, and the operating force required for lifting work is reduced.
The deck does not necessarily need to be divided into two parts, and one deck formed narrower than the vehicle width of the trailer may be connected to the main frame by a parallel four-point support link.

(4) A container trailer in which the deck is provided with urging means for constantly applying a force in the upward direction by a weight.
In the container trailer described in this section, the force required for the operator during the ascending operation of the deck is reduced by applying the force in the ascending direction by the urging means provided on the deck. The Moreover, such a force is generated by the weight, and a power source such as an actuator and its control are not required at all.
As a structure of the urging means, for example, one end of a lever that is pivotally attached to the main frame is pivotally attached to the deck, and a weight is fixed to the other end. Structure that efficiently converts the force into the upward direction of the deck, one end of the insulator that is attached to the main frame is attached to the deck, the pulley is attached to the other end, and the weight is connected to the pulley and the wire. A structure or the like that efficiently converts the weight of the weight into a force in the upward direction of the deck by suspending the rack is employed.

(5) In the above items (1) to (3), there is provided a lever as a lifting operation handle that is attached to the deck by a rotating shaft extending in the front-rear direction of the vehicle body, one end of which is attached to the main frame. A container trailer that is in contact with a roller and has the other end extending above the deck.
The container trailer described in this section increases the operating force by the so-called lever principle by operating the lever as a lifting operation handle so as to rotate, and moves the deck up and down with a small operating force.

(6) In the above item (5), the insulator as the lifting operation handle is a container trailer that is detachably attached to the deck.
The container trailer described in this section removes this lever during loading and unloading operations to prevent the lever from becoming an obstacle during loading and unloading operations. This is to prevent a state of protruding upward.

  Since the present invention is configured as described above, it is provided with a deck that rises to a height equivalent to the floor surface of the loaded container when it is necessary during cargo handling work, and normally descends to a lower position. Thus, cargo handling work using a cargo handling machine such as a forklift can be performed smoothly.

The deck of the container trailer which concerns on embodiment of this invention is shown, (a) is AA sectional drawing of FIG. 4, (b) is BB sectional drawing of (a). FIG. 2 is a three-dimensional schematic diagram of the deck shown in FIG. 1, (a) and (b) are structural examples of urging means for constantly applying a force in the upward direction by a weight, and (c) is a lifting work handle. An example of the structure is shown. It is a side view of a container trailer provided with the deck shown by FIG. It is a top view of a container trailer provided with the deck shown by FIG. It is a rear view of a container trailer provided with the deck shown by FIG. It is a top view of a container trailer provided with a deck of another structure concerning an embodiment of the invention.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. In this description, the front means the forward direction of the container trailer, the rear means the backward direction, and the left-right direction means the vehicle width direction.

As shown in FIGS. 3 to 5, the container trailer 10 according to the embodiment of the present invention has a kingpin that has a center of gravity when the main frame 12 on which the gooseneck 12 a is formed is behind the gooseneck 12 a and the container 22 is loaded. Two pairs of front and rear bolsters 16 and 18 on which the container 50 is placed are arranged at positions where both the axial weight of the (fifth wheel) 24 and the axial weight of the traveling wheel 26 fall within the specified values. The bolsters 16 and 18 are provided with container fixing twist locks 16a and 18a so as to be able to appear and retract.
Reference numeral 27 denotes a landing gear used when the container trailer 10 is parked alone.

A deck 28 is provided at a position between the rear bolster 18 and the vehicle body rear end 12b. As shown in FIG. 1, the deck 28 is connected to the main frame 12 by a parallel four-point support link 32 having a rotating shaft 30 extending in the front-rear direction of the vehicle body, and the upper surface of the bolster 18 and the inner floor surface of the container 22. It is possible to move up and down with a difference in height. In the example shown in FIGS. 1 to 5, the deck 28 is divided into two in the left-right direction of the vehicle width. The left and right decks 28 </ b> L and 28 </ b> R are connected to the main frame 12 by parallel four-point support links 32 so as to contact each other.
The width (total) of the left and right decks 28L and 28R is within the vehicle width of the trailer 10 at both the storage position (shown by a solid line in FIG. 1) and the raised position (shown by a dotted line in FIG. 1). Thus, it is formed narrower than the vehicle width of the trailer 10. In the illustrated example, a tread plate 34 for eliminating a step between the left and right decks 28 and the main frame 12 at the storage position of the deck 28 is provided at the center of the main frame 12 in the vehicle width direction.

In addition, as shown in FIG. 2, the deck 28 is provided with a biasing means 36 that constantly applies a force in the upward direction as shown in FIG. The urging means 36 always applies a force in the upward direction to the deck 28 by the weight of the weight 38. In the example of FIG. 2A, one end 40a of the lever 40 pivotally mounted on the main frame 12 is pivotally mounted on the deck 28, and a weight 38 is fixed to the other end 40b. It is a structure that efficiently converts the weight of the deck into a force in the upward direction of the deck.
In the example of FIG. 2B, one end 42a of an insulator 42 pivotally attached to the main frame 12 is pivotally attached to the deck 28, and a pulley 44 is pivotally attached to the other end 42b. The weight 39 is suspended from the other end 46b of the wire 46 having the one end 46a fixed thereto, and the weight of the weight 38 is efficiently converted into a force in the upward direction of the deck 12 by the lever 42, the pulley 44 and the wire 46. It is a structure to do.

  Furthermore, as shown in FIG. 2C, the deck 12 may be provided with a lifting / lowering handle 48 as necessary. The elevating work handle 48 is a lever that is detachably mounted by a rotating shaft 50 extending in the front-rear direction of the vehicle body, and is preferably detachable from the deck 28. As shown in the figure, one end 48a is in contact with the main frame 12 via the roller 52 while being pivotally attached to the deck 28, and the other end extends above the deck 28.

1A is a fixing pin for fixing the deck 28 in the retracted position or for connecting the left and right decks 28L and 28R in the raised position. The parts to be mounted are connecting brackets that are pivotally attached to one of the left and right decks 28 (28L). By inserting the fixing pin 54, the deck 28 is fixed to the retracted position, or the left and right decks 28L, 28R can be linked.
Further, a part indicated by reference numeral 58 is an intermediate support member fixed to the intermediate portion in the width direction of the deck 28, and comes into contact with a receiving bracket 60 fixed to the main frame 12 at the raised position of the deck 28. The load of the deck 28 is received. The lower end portion of the intermediate support member 58 and the upper surface of the receiving metal fitting 60 are inclined surfaces so that they do not interfere unnecessarily when the deck 28 is raised and lowered by the parallel four-point support link 32. Yes.

  The above configuration is made. According to the embodiment of the present invention, the following operational effects can be obtained. First, the container trailer 10 described in this section is attached to the main frame 12 at a position between the rear bolster 18 and the rear end 12a of the vehicle body by a parallel four-point support link 32 having a rotation shaft 30 extending in the front-rear direction of the vehicle body. The connected deck 28 is provided, and when necessary, the deck 28 is raised to a height equivalent to the inner floor surface of the loaded container 22 to enable use of a cargo handling machine such as a forklift. On the other hand, by lowering the deck 28 to a lower storage position except during cargo handling work, it is possible to prevent the door and the deck 28 from interfering when the door of the container 22 is opened and closed.

  Moreover, the deck 28 is formed to be narrower than the trailer so that the width of the deck 28 is within the trailer 10 at both the retracted position and the raised position. In any case, the deck 28 does not protrude from the trailer 10 and hinder the operation.

In the example of FIGS. 1 to 5, the deck 28 is divided into two in the left-right direction of the vehicle width, and the vehicle width center side ends of the two divided left and right decks 28 </ b> L and 28 </ b> R By abutting each other at the center, a deck without a gap in the vehicle width direction is formed, and by falling separately to the left and right, it fits in the storage position. In addition, the weight of the decks 28L and 28R alone is reduced, and the operation force required during the lifting work is reduced.
The deck 28 is not necessarily divided into two parts. As shown in FIG. 6, one deck 128 formed narrower than the width of the trailer is connected to the parallel four-point support link shown in FIG. 32 may be connected to the main frame 12. Also in this case, it is desirable to provide a tread plate 34 at the vehicle width direction side end portion for eliminating the step between the deck 128 and the main frame 12 at the storage position of the deck 28.

  Further, the container trailer 10 according to the embodiment of the present invention is operated when the deck 28 is lifted by a force in the upward direction being constantly applied by the biasing means 36 provided on the deck 28. The power required for the person is reduced. Moreover, such force is provided by the weight 38, and a power source such as an actuator and its control are not required at all.

  Further, by operating the lifting work handle 48 to rotate, the operating force can be increased by the so-called lever principle, and the deck 28 can be raised and lowered with a small operating force. Further, by removing this lever during the cargo handling operation and during storage, the lifting work handle 48 can be prevented from protruding above the deck 28 during the cargo handling operation and the trailer traveling. If the lifting / lowering work handle 48 is foldable, it is not necessary to be detachable from the deck 28.

  10: container trailer, 12: main rail, 12a: gooseneck, 12b: rear end of vehicle body, 16, 18, bolster, 22: container, 24: kingpin, 26: traveling wheel, 28, 28L, 28R: deck, 30, 50 : Rotating shaft, 32: parallel four-point support link, 36: biasing means, 38: weight, 40, 42: lever, 44: pulley, 46: wire, 48: handle for lifting work, 52: roller

Claims (4)

Before and after placing the container on the main frame where the gooseneck is formed, at the position where the center of gravity of the fifth wheel and the running wheel is within the specified value, and the center of gravity when the container is loaded is behind the gooseneck. A container trailer in which two pairs of bolsters are arranged, and is connected to the main frame at a position between the rear bolster and the rear end of the vehicle body by a parallel four-point support link extending in the longitudinal direction of the vehicle body, A deck capable of raising and lowering the height difference between the upper surface of the bolster and the floor of the container is provided, so that the width of the deck is within the width of the trailer in both the retracted position and the raised position. A container trailer characterized in that it is formed narrower than the vehicle width of the trailer. The deck is divided into two in the left-right direction of the vehicle width, and each of the left and right decks has the parallel four points so that the vehicle width center side ends of the left and right decks abut each other at the vehicle width center at the raised position. The container trailer according to claim 1, wherein the container trailer is connected to the main frame by a support link. The container trailer according to claim 1 or 2, wherein the deck is provided with urging means for constantly applying a force in the upward direction by a weight. A lever as a lifting / lowering handle is attached to the deck by a rotating shaft extending in the front-rear direction of the vehicle body, one end of which contacts the main frame via a roller, and the other end of the deck The container trailer according to claim 1, wherein the container trailer extends upward.

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