JPH07132991A - Auxiliary mechanism for inclining and erecting column member - Google Patents

Abstract

PURPOSE:To make smaller an external force required for effecting inclining and erecting actions of a column member of heavy weight. CONSTITUTION:A main column member is divided into an upper member 3 and a lower member 4, and a first receiving member 30 and a second receiving member 40 are provided on the member 3 and the member 4, respectively. A first rotary axis 38 and a second rotary axis 39 are mounted to the member 3, and the axis 38 or the axis 39 is brought into engagement with the member 40 to cause the axis 38 or the axis 39 to act as a rotary axis, and furthermore there are provided a first urging member 34 for generating nearly constant urging force, and second and third urging members 36a, 36b for generating different urging forces corresponding to erection angles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilting / uprighting assisting mechanism for a column member, and more specifically, it constitutes a large and long column member represented by a main column member of a container. The present invention relates to a novel auxiliary mechanism for facilitating the work of tilting a divided portion with respect to another divided portion or standing up in a substantially straight line.

[0002]

2. Description of the Related Art Conventionally, for example, in collecting an empty container after carrying a cargo, it has been strongly demanded to make the space necessary for collecting the container as small as possible to improve the space utilization efficiency. . As a method for satisfying this demand, a bottom pillar member, a front and rear frame member, a side frame member, and the like constituting the container are detachably connected to each other, and moreover, a main pillar is erected at four corners of the container. The member is divided at a predetermined position toward the lower end, the upper member is tilted and connected to the lower member so that it can be erected, and in the standing state, the connecting projection provided on the upper surface of the lower member and the lower surface of the upper member are formed. Engage with the recess to ensure a reliable standing position,
It has been proposed to achieve sufficient strength as a whole container (strength capable of withstanding a predetermined number of stacked layers).

[0003]

However, since the work for tilting or erecting the main pillar member of the container described above is generally performed by a cargo operator such as a harbor.
The force required to tilt or erect the main pillar member configured to have sufficient strength becomes remarkably large, which makes it extremely difficult for the cargo operator to perform work, and eventually the cargo handling efficiency. Is significantly reduced. Specifically, since the height of the international standard container is 8 feet or 9 feet 6 inches, the height of the main pillar member is about 2000 mm or 2400 m.
It becomes m. And in the latter case, if the height of the lower member is set to about 600 mm in consideration of the folded state,
The height of the upper member is about 1800 mm. Further, in order to satisfy the stacking requirement required by the international standard, the weight of the upper member is about 220 kg. Therefore, the rotational moment when the upper member is tilted to a substantially horizontal state is about 19,800 Kg · cm, and the force required to lift the upper member by its end or slowly lower it is about 110 Kg. .
And since there are very few cargo handling workers who can constantly exert such a force, several workers must jointly perform the tilting and standing work of the upper member, and the cargo handling work efficiency is remarkably increased. It will decrease. In particular, since the work of collecting containers cannot make any direct contribution to the transportation of cargo, a crane or the like that can make a large contribution to the transportation of cargo is used for this work. This significantly reduces the efficiency of freight transportation itself. Therefore, as described above, there is no choice but to depend on the work of the worker.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and greatly increases the force required to tilt or erect one divided portion of a column member with respect to another divided portion. It is an object of the present invention to provide a new tilting / standing up assist mechanism that can be reduced.

[0005]

In order to achieve the above object, the tilting / standing up assist mechanism for a pillar member according to claim 1 is provided at a predetermined position of one divided portion of a long pillar member. One receiving member and a second receiving member provided at a predetermined position of another divided portion adjacent to one divided portion, and the second receiving member has two rotation shafts at mutually different positions, The first receiving member sets the positions of the shaft support portion that supports one rotation shaft in a predetermined angle range in which one divided portion is substantially upright and the position of the other rotation shaft in an angle range that exceeds the predetermined angle range. A first biasing member that has a shaft restraining member for restraining, and further applies a biasing force in the upright direction to the other divided portions at least within the above-mentioned predetermined angle range, is formed between the first receiving member and the predetermined fixing portion. It is provided between and at least within the above-mentioned predetermined angle range 1 A third urging member that applies an urging force in the upright direction to the divided portion is provided between a predetermined position of the first receiving member and a predetermined fixed portion, and has a first urging force of 1 in an angular range exceeding the predetermined angular range. A second urging member that applies an urging force in the standing direction to the divided portion is provided between a predetermined position of the first receiving member and a predetermined fixed portion.

[0006]

According to the tilting / standing up assist mechanism for a pillar member of claim 1, a long pillar member is divided at a predetermined position, and one of the pair of adjacent divided portions has an end portion of one divided portion. The connecting protruding member is formed with a recess for accommodating the protruding member at the end of the other divided portion, and the protruding member and the recess are engaged with each other so that the one divided portion is separated from the other divided portion. In a pillar member that can be erected / integrated in a straight line with, when tilting one of the divided parts,
By merely applying a relatively small force to one of the split portions, the one of the split portions can be rotated in the tilting direction about the one rotation shaft supported by the shaft support portion. Then, at the end of the rotation around one rotation axis, the other rotation axis is regulated by the axis regulation member. After that, by applying a relatively small tilting prevention force to one of the divided portions, at least the first biasing member and the second biasing member significantly suppress the natural tilting of the one divided portion. Therefore, it is possible to achieve the smooth tilting of the one divided portion around the other rotation axis without giving an excessive impact. Moreover, the force actually required by the operator can be sufficiently reduced through the series of operations described above, and the workability for tilting one of the divided parts of the pillar member can be significantly improved.

On the contrary, when one of the divided portions is to be erected, at least the first urging member and the second urging member apply a considerably large urging force in the upright direction to the one of the divided portions in the initial stage of the erection work. Therefore, by applying a relatively small lifting force to one of the divided portions, it is possible to rotate the one divided portion around the other rotation axis in the upright direction. Then, after being rotated to a state in which it approaches the standing state to some extent, the regulation of the other rotation shaft by the shaft regulating member is released and a relatively small force in the standing direction is applied to one of the divided portions. For example, the one split portion is rotated in the standing direction until the one rotation shaft is supported by the shaft support portion. After that, if a relatively small force in the upright direction is applied to one of the split parts, the one of the split parts can be rotated in the upright direction about one rotation axis, and finally the projecting member and The recesses can be engaged with each other. Therefore, the force actually required by the operator can be sufficiently reduced in the entire range for erecting the one divided portion, and the workability for erecting the one divided portion of the pillar member can be significantly improved. it can.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing embodiments. 1 is a front view schematically showing an embodiment of a tilting / standing up assist mechanism of the present invention, FIG. 2 is a side view,
3 is a sectional view taken along the line III-III of FIG. 1, in which the main pillar member 2 of the container 1 is divided into an upper member 3 and a lower member 4, and the upper member 3 has a first receiving member 30 and a lower portion. The second receiving member 40 is integrally provided on the member 4. A first urging member 34 is provided between the first predetermined position 32 of the first receiving member 30 and the engaging member 33 provided at a predetermined position of the bottom frame member 1a of the container 1, 1 predetermined position 37a, 37 of the second predetermined position 35 of the receiving member 30 and the bottom frame member 1a of the container 1 which are different from each other
A second urging member 36a and a third urging member 36b are provided between them and b, respectively. A protruding metal fitting 4a for connection is provided at the upper end of the lower member 4, and a recess (not shown) engageable with the metal fitting 4a is formed at a predetermined position on the lower surface of the upper member 3. .

Further details will be described. The first receiving member 30 is located at a predetermined position near the upper member 3 and has the first rotating shaft 3
8 and also has a second rotating shaft 39 at a predetermined position slightly closer to the tip end than the central portion. Then, the first biasing member 34 formed of a coil spring is loosely fitted to the second rotating shaft 39, and one free end portion of the coil spring 34 is located farther than the central portions of both rotating shafts 38, 39. It is engaged with a predetermined position near the one rotation shaft 38.

The second receiving member 40 has a shaft support recess 41 for supporting the first rotating shaft 38 at a predetermined position near the upper end.
And having the first rotation shaft 38 supported by the shaft support recess 41, the second rotation shaft 39 is housed rotatably around the first rotation shaft 38 by a predetermined angle. It has an arcuate hole 42 that runs. Further, it has a shaft restricting member 44 rotatable about a shaft 43 provided at a predetermined position closer to the lower member 4 than the arcuate hole 42, and is the lowest member 4
The shaft restricting member 4 prevents the return motion of the second rotating shaft 39 in the state of being rotated to the side by the shaft restricting member 44.
4 has a restriction recess 44a that can be engaged with the second rotation shaft 39 at a predetermined position. Further, the position of the first rotating shaft 38 of the first receiving member 30 and the position of the shaft bearing recess 41 of the second receiving member 40 allow the engagement and disengagement of the protruding fitting 3a and the recess 4a to be smoothly achieved. It is set up so that you can. Further, the position and length of the arcuate hole 42 and the position of the second rotating shaft 39 make the overall height in the tilted state of the upper member 3 as low as possible, and in the housed state of the upper member 3. It is set so that the space utilization efficiency can be increased as much as possible. Therefore, for example, regarding the upper members 3 facing each other, the position of one arc-shaped hole 42 in the height direction is set higher than the position of the other arc-shaped hole 42.

The second urging member 36a and the third urging member 36b are both coil springs, one end of which is the first.
Engagement hole 35 formed at a predetermined position of the tip of the receiving member 30
(Corresponding to the predetermined position 35) is engaged. Then, the other end of the second biasing member 36a is provided at a predetermined position of the bottom frame member 1a of the container 1 with the second engaging member 37.
The third engaging member is engaged with a predetermined position of a (corresponding to the predetermined position 37a), and the other end of the third biasing member 36b is provided at a predetermined position of the bottom frame member 1a of the container 1. It is engaged with a predetermined position of the combination member 37b (corresponding to the above-mentioned predetermined position 37b). The relative position between the second engagement member 37a and the third engagement member 37b is determined by the second engagement member 37.
It is set so that a is close to the lower member 4 and the third engaging member 37b is separated from the bottom frame member 1a. And
The position of the second engaging member 37a is set to a predetermined position where almost no biasing force is applied when the upper member 3 rotates about the first rotating shaft 38, and the third engaging member 37b also operates.
Is set to a predetermined position where a relatively large biasing force can be applied during the rotation. Of course, the positions of both engaging members 37a, 37b are set so that the urging force by both urging members 36a, 36b acts when the upper member 3 rotates about the second rotating shaft 39. A predetermined position of the base of the first receiving member 30 and the tip of the shaft restricting member 44 are connected by a flexible connecting member 45.

Further, at a predetermined position of the bottom frame member 1a, a second
A plate member 51 for position regulation parallel to the receiving frame member 41 is provided, and an arcuate hole 52 for supporting the second rotating shaft 39 is formed at a predetermined position of the plate member 51 between the plate member 51 and the arcuate hole 42. There is. Further, stoppers 53a, 53b that substantially face each other are provided at both ends of the arcuate hole 52, are engaged with the other end of the first urging member 34, and have a second rotating shaft 39.
The engaging member 34a, which is rotatably mounted on the shaft, is selectively engaged with one of the stoppers.

The operation of the tilting / standing up assist mechanism having the above structure is as follows. (1) When tilting the upper member 3 of the main pillar member 2 In this case, by applying a force in the tilting direction to a predetermined position of the upper member 3, as shown in FIG.
It is possible to rotate the upper member 3 in the tilting direction with the first rotation shaft 38 supported by 1 as the rotation center. The upper limit angle of this rotation angle is determined based on the allowable movement distance of the second rotation shaft 39 by the arcuate hole 42.

When this operation is performed, the first urging member 34 and the third urging member 36b act on the urging force in the direction in which the tilting of the upper member 3 is prevented (however, the first urging member). With respect to the member 34, it acts only on the rotation start processing of the upper member 3 in the tilting direction), but the component force for rotating the upper member 3 in the tilting direction is extremely small within the above rotation angle range. Therefore, the force actually required to be applied to the upper member 3 at the beginning of the rotation in the tilting direction can be sufficiently reduced. Of course, the second biasing member 36a exerts almost no biasing force on the upper member 3 in the above-described rotation angle range. Further, at the beginning of the rotation in the tilting direction, the engaging member 34a is engaged with the stopper 53a, but when the arcuate hole 42 prevents the upper member 3 from rotating in the tilting direction,
The engagement member 34a engages with the other stopper 53b.
Since the center of rotation of the above-described rotation operation is the first rotation shaft 38 that is close to the recess of the upper member 3, the recess of the upper member 3 can be smoothly engaged with and disengaged from the protruding metal fitting 4a. .

Then, when the second rotation shaft 39 engages with the position of the arcuate hole 42 that is closest to the lower member 4 in the tilting limit rotation state, the shaft regulating member 44 is rotated to rotate the second direction. 2 The movement of the rotary shaft 39 is blocked. That is, after that, as shown in FIG.
Acts as the central axis of rotation of the. The center of rotation is the first rotation shaft 3
After changing from 8 to the second rotating shaft 39, the component force for rotating the upper member 3 in the tilting direction is considerably large due to the tilting angle being considerably large, but Due to the movement center changing to the second rotation shaft 39 and the engagement member 34a engaging with the other stopper 53b, not only the third urging member 36b but also the first urging member 36b
The urging member 34 and the second urging member 36a act on the urging force in a direction that prevents the upper member 3 from rotating in the tilting direction. That is, the urging force for preventing the upper member 3 from rotating in the tilting direction can be increased in response to the increase in the component force for rotating the upper member 3 in the tilting direction.
Therefore, the turning force in the tilting direction that actually acts on the upper member 3 can be made sufficiently small, and a smooth tilting can be achieved without a large impact at the end of the tilting. Of course, in order to eliminate the impact, it is necessary for the worker to apply external force at the end of the tilt,
The force that needs to be applied externally can be made sufficiently small. Therefore, it is not necessary to employ a special mechanical device, such as a crane, for tilting the upper member 3, and the tilting of the upper member 3 can be easily achieved by the operator's manual work.

(2) When the upper member 3 of the main pillar member 2 is erected When the upper member 3 is tilted, the second rotating shaft 39
Is the center of rotation, the urging forces of the first urging member 34, the second urging member 36a, and the third urging member 36b act as urging forces in the direction in which the upper member 3 is erected. Therefore, the upper member 3 is rotated in the upright direction by applying a force larger than the difference between the component force in the tilting direction of the upper member 3 and the sum of the biasing forces to the upper member 3 as the force in the upright direction. You can The sum of the urging forces decreases as the rising angle of the upper member 3 increases, but the component force also decreases. Therefore, it is necessary to increase the force that needs to be applied as a force in the standing direction. Absent.

After the upper member 3 is rotated in the upright direction by a predetermined angle and the first rotating shaft 38 is engaged with the shaft bearing recess 41, the shaft restricting member 44 is rotated to make the second rotating motion. The restraint on the shaft 39 is released. When a force in the standing direction is applied to the upper member 3, the biasing force of the third biasing member 36b acts as a biasing force in the standing direction, so that the upper member 3 is moved in the standing direction about the first rotating shaft 38. It can be rotated.
At the end of the rotation of the upper member 3 about the first rotation shaft 38 in the upright direction, it is necessary to engage the recess 3a and the protruding metal fitting 4a, and the urging force of the third urging member 36b. Although the force is insufficient only by itself, the engaging member 34a engages with the one stopper 53a to apply the rotational biasing force in the upright direction, so that the force applied from the outside is not particularly increased. The upper member 3 can be raised up to the state where the recess 3a and the protruding fitting 4a are engaged with each other.

[0018]

[Specific example] The upper member 3 has a total length of 180 cm and a weight of 22.
Assuming that the center of gravity is 0 kg, the moment required to lift the upper member 3 is, as shown in Table 1, from 19800 kg · cm in the horizontal state to 0 in the vertical state.
Significant change up to kg / cm. In addition, l in Table 1 is the second
It is the horizontal distance between the pivot 38 and the center of gravity.

[0019]

[Table 1]

During a period from the horizontal state of the upper member 3 to the state of standing up to 75 °, the upper member 3 is rotated around the second rotation shaft 38 as a rotation center, and the urging force of the first urging member 34 is increased. Thirty
Assuming that the distance between the action point of the first biasing member 34 and the second rotation shaft 38 is 17.0 cm, the first biasing member 34 causes 300 × 17.0 = in the above rotation range.
A moment of 5100 kg · cm acts.

Further, the urging force of the second urging member 36a is set to 1
If it is 000 kg, the moment due to the second biasing member 36a corresponding to the standing angle of the upper member 3 changes from 10970 kg · cm to 0 kg · cm as shown in Table 2. However, Table 2 shows only the standing angles of 0 ° to 60 °. In addition, 1 in Table 2 is the second biasing member 3
The length and angle of 6a are the standing angle of the upper member 3.

[0022]

[Table 2]

Therefore, assuming that the third urging member 36b does not act at all, the moments due to the urging forces of the respective urging members with respect to the standing angle and the external moments that need to be given from the outside are shown in Table 3. , The external moment is from 3780 kg · cm to 50
It changes in the range of 0 kg · cm (however, the standing angle range is 0 ° to 60 °). The units in Table 3 are the same as those in Table 1 and Table 2.

[0024]

[Table 3]

Maximum value of the external moment is 3780 kg
-It may seem that cm is a considerably large value, but since the total length of the upper member 3 is 180 cm, it is about 20 kg when converted to the actually required force, and it can be sufficiently handled by human power. Of course, the second biasing member 36a
If the urging force of is set to be larger, the external force can be made smaller. Also, in practice, the third biasing member 36b
Since the urging force by the force also acts, the external moment can be further reduced.

The present invention is not limited to the above-described embodiments. For example, not only the pillar members are tilted and erected independently, but also the pillar members facing each other and the planar members positioned between the pillar members are provided. The present invention can be applied when tilting and standing up as a unit, and various design changes can be made without departing from the scope of the present invention.

[0027]

As described above, according to the first aspect of the present invention, it is possible to achieve a smooth tilting / standing of one divided portion of a long column member with respect to another divided portion by giving a slight external force. In addition, it is possible to achieve a unique effect that the external force required to achieve smooth tilting / standing can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a front view schematically showing an embodiment of a tilting / standing up assist mechanism of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a side view illustrating a tilting operation about a first rotation shaft as a rotation center.

FIG. 5 is a side view illustrating a tilting operation about a second rotation shaft as a rotation center.

[Explanation of symbols]

 2 main pillar member 3 upper member 3a recess 4 lower member 4a protruding metal fitting 30 first receiving member 34 first urging member 36a second urging member 36b third urging member 37a, 37b predetermined position 38 first rotating shaft 39 Second rotation shaft 40 Second receiving member 41 Shaft supporting recess 44 Shaft regulating members 53a, 53b Stopper

Claims (1)

[Claims] 1. A long pillar member (2) is divided at a predetermined position, and a protruding member (4a) for connection is provided at an end of one divided portion (4) and another divided portion (3). Recesses (3a) for accommodating the projecting members (4a) are respectively formed at the ends of the two, and the projecting members (4a) and the recesses (3a) are engaged with each other so that they are adjacent to each other. Auxiliary mechanism for tilting / standing up the pillar member (2) capable of standing / integrating one of the pair of split parts (3) so as to be linear with the other split part (4). And a first receiving member (30) provided at a predetermined position of one of the divided parts (3)
And a second receiving member (40) provided at a predetermined position of the other split portion (4), and the first receiving member (30) has two rotating shafts (38) (39) at different positions. ), The second receiving member (40) has one rotation shaft (38) within a predetermined angle range in which one split portion (3) is substantially upright.
And a shaft restricting member (44) for restricting the position of the other rotating shaft (39) in an angle range exceeding the predetermined angle range, and at least the predetermined angle. Within the range, the first biasing member (34) that applies a biasing force in the upright direction to one of the divided portions (3) is fixed to the first receiving member (30) and a predetermined fixing portion (53a) (5).
3b) and a third urging member (36b) that applies an urging force in the upright direction to one of the split portions (3) at least within the above-mentioned predetermined angle range is the first receiving member (36b). 30) and a fixed part (37)
The second biasing member (36a) which is provided between the first receiving member and the second biasing member (36a) is provided between the second biasing member (36a) and the split portion (3) in the upright direction in an angular range exceeding the predetermined angular range. The tilting of the pillar member, characterized in that it is provided between a predetermined position of (30) and a predetermined fixing portion (37b).
Standing assistance mechanism.