JPH10245997A - Erecting and fixing device for column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device to install upright a column fast in a hole provided in a lining plate through simple operations, wherein the covering plate is to be laid in road construction works, etc., provisionally. SOLUTION: A bearing part 3 is installed at the tip of the body 1 of a column through a flat plate 2, and rotary parts 4a and 4b are furnished which rotate round shafts 3a and 3b installed in the symmetrical positions of the bearing part 3. The rotary parts 4a and 4b are equipped with cutout 11a and 11b and detent projections 12a and 12b, and one part thereof is detained with a bar 15 on the flat plate 2 side so that rotating inward is restricted, and the tapered surfaces 13a and 13b of the cutouts 11a and 11b are protruded to deside the bearing part 3. When the bearing part 3 is inserted into a hole 9 in a lining plate 8, the cutouts 11a and 11b receive the edge of the hole 9 and the rotary parts 4a and 4b rotate, and the detent projections 12a and 12b heave a cylindrical part 5 against the energizing force of a spring 7, and when rotation is made till the horizontal positioning, the cylindrical part 5 sinks and is fitted on the detent projections 12a and 12b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column erecting / fixing apparatus, for example, in which a column is detachably erectable and fixed in a hole of a lining plate used in a road construction or construction work site. The present invention relates to an improvement for making the attaching / detaching operation easier.

[0002]

2. Description of the Related Art Recently, it is necessary to provide a temporary road surface or a floor surface at the site of road construction or construction work in accordance with the progress of the construction, and a hollow iron plate called a lining plate is widely used. Often laid. Then, for example, as shown in FIG. 8, when the excavation work is in progress on a part of the road surface or the like on which the lining plate 51 is applied, the lining plate 51 in the range is removed, Since it is dangerous for workers and pedestrians as it is, provision of a temporary fence 53 around the area 52 from which the lining plate 51 is removed is required.

In this case, columns 55 are erected and fixed using holes 54 formed at predetermined positions at four corners of the lining plate 51 in advance.
The provisional fence 53 is configured by horizontally suspending and fixing the horizontal bar 56 using a grip portion integrally formed on the side surface of each column 55 and a universal joint that is a joint component. Here, the pillar 55 of the temporary fence 55 is erected in a detachable manner, but if it is simply erected in the hole 54 in a manner that can be easily inserted and removed, the temporary fence is
The entire 53 may be removed without permission. In addition, if the temporary fence 55 is installed in a place where frequent traffic occurs, there are many opportunities for external force to act on the temporary fence 55, and if the pillar 55 is not fixed to the lining plate 51, relaxation will progress as a whole and the worst In this case, a situation occurs in which the temporary fence 55 is broken. Therefore, in order to prevent such a danger, the pillar 55 is
Is required to be erected under fixed conditions.

Therefore, a standing / fixing device as shown in FIG. The apparatus shown in the figure has a column main body 63 in which a flat plate 62 having a diameter larger than the diameter of the hole 54 is attached to an end of a hollow cylindrical body 61, and an L-shaped hook portion 64 at one end. An operating rod 66 in which a male screw 65 is threaded in a fixed section, and a tightening portion 69 in which handles 68 are attached to both sides of a nut 67 screwed to the male screw 65 of the operating rod 66, and the column body There is a mechanism in which the action bar 66 is passed through the portion 63 and the fastening portion 69 is screwed into the action rod 66. Then, the hook portion 64 of the action rod 66 is inserted into the hole 54 of the lining plate 51.
Is inserted and engaged with the lining plate 51, the tightening portion 69 is manually rotated to pull the action rod 66 into the inside of the column body 63, and the lining plate is inserted between the hook portion 64 and the flat plate 62. The main body 63 is held upright on the lining plate 51 by clamping the
Is erected and fixed.

[0005]

According to the erecting / fixing device described above, when the columns 55 are to be erect in the large number of holes 54, it is necessary to manually rotate the tightening portions 69 one by one to tighten them. , It is very troublesome and the work efficiency is poor. Further, the hollow cylindrical body 61 must have a considerable thickness because it must not have such strength as to exhibit buckling due to the tightening force of the working rod 66 or an external force after standing, and the working rod 66 has the same tensile strength. A rod having a considerable outer diameter is applied because it must have strength, but as a result, the weight of the entire apparatus becomes considerable, and the burden of transportation and installation work increases. Further, a lining plate is provided between the hook portion 64 and the flat plate 62.
Although the hollow cylindrical body 61 is fixed by pressing the hollow body 51, when an external force acts on the hollow cylindrical body 61 in a tightened state, an extremely large stress is concentrated on the hook portion 64, and the same portion is often damaged. .

Accordingly, the present invention has been made in view of the above problems, and provides an apparatus for erecting and fixing a pillar, which is extremely easy to erect and fix and which can be reduced in weight and has excellent rigidity. It was created for the purpose.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a method of erection of a column for detachably mounting and fixing a column to a hole formed in a plate.
In the fixing device, a column main body portion in which a bearing portion to be inserted into a hole on the plate side is provided upright at a tip portion of the column, and two shafts provided at symmetric positions with respect to the axis of the column main body portion in the bearing portion. Two plate-shaped or block-shaped elements in which each main part rotates as a center on the tip side of each axis, and a cut is formed in each main part for inserting and holding the plate. And each of the rotation operating portions formed with engagement projections protruding in a direction perpendicular to the direction of the cut, and the cut of each of the rotation operation portions with respect to the axis of the pillar main body. Rotation that limits the rotation of each rotation operating part so that the angle formed by the direction is not less than a predetermined angle, and sets the predetermined angle within a range in which the opening of each cut can receive the edge of the hole on the plate side. A limiting mechanism, which is fitted to the pillar main body and cuts in the respective rotary operating parts. And a cylindrical body for fitting the engagement projection of each of the rotation operating portions in a state where each of the rotation operation portions has rotated to a position where the direction is substantially perpendicular to the axis of the column main body portion. Pertains to equipment for erecting and fixing pillars.

According to the present invention, when the distal end portion of the column main body is inserted into the hole on the plate side, the initial angle of the cut of each rotation operating portion is set in the bearing portion by the rotation restricting mechanism. The moving part rotates while guiding the edge of the hole on the plate side into the cut at the opening. Then, when each of the rotary operating portions rotates to a position where the direction of the cut of each rotary operating portion is substantially perpendicular to the axis of the column main body portion, each cut portion grips the plate and does not rotate any more (the column main body). The state is such that the distal end portion of the portion does not move any more in the insertion direction), but at this stage, the cylindrical body portion is fitted to the engagement protrusion of each rotation operating portion.
Then, each of the rotation operation portions cannot rotate in any direction, and the column main body portion is erected and fixed in the hole on the plate side by the restraint. On the other hand, at the time of pulling out, it is sufficient to release the cylindrical body portion from the state in which the engagement projections of the respective rotation operating portions are fitted and to pull out the column main body portion. In other words, the engagement between the cylindrical body and the engagement protrusions of each of the rotation operating portions is released, so that each of the rotation operation portions can be rotated in the initial angle direction. The moving part rotates and the plate is released from each cut portion, so that the entire apparatus can be easily separated from the plate side.

Further, the present invention can be improved and expanded as follows. (1) The outer corners of the opening portions of the cuts of the respective rotation operating portions as viewed from the axis of the column main body are formed on an outwardly tapered surface. The edge of the hole on the plate side can be smoothly received into the notch of each rotation operating portion, and the releasing operation at the time of pulling out can be also smooth. (2) A flat plate having an area larger than the diameter of the hole on the plate side is interposed between the column and the bearing in the column main body, and the thickness of the flat plate is adjusted so that the direction of the cut of each rotation operating part is aligned with the axis of the column main body. In a state in which each of the rotary operating portions has been rotated to a position substantially vertical, the distance between the tip surface of the pillar and a surface corresponding to the rotary direction side in the cut of each of the rotary operating portions is substantially equal to, and Are formed with holes for preventing the rotation of each rotation operating portion. In the above-described invention, each of the rotation operating portions grips the opposite edge of the hole on the plate side. However, when each of the rotation operation portions is formed of a plate-shaped element, the rotation operation portion faces the hole in the standing and fixed state. The standing mechanism is weak against external force in the direction perpendicular to the direction. On the other hand, if a flat plate is provided as in this improved structure, the close contact state of the flat plate with the plate side and the gripping state by each of the rotation operating parts cooperate, and a strong standing strength is obtained even when an external force acts in any direction. Can be secured. (3) The column main body is provided with a biasing mechanism that resiliently biases the cylindrical portion in the distal direction, and when each of the rotation operating portions rotates, each engagement protrusion pushes up the end surface of the cylindrical portion, A configuration is added in which the cylindrical body portion internally fits each engagement protrusion in a state where the direction of each engagement protrusion is substantially parallel to the axial direction of the pillar main body portion. According to this additional configuration, the cylindrical body can be handled integrally with the pillar main body, and the vertical work is automatically performed because the cylindrical body automatically fits into the engaging projections of the respective rotation operating parts when the vertical body is erected. Extremely simple. (4) In the case of adopting the configuration of (2), the rotation restricting mechanism is constituted by an engagement mechanism of a part of the rotation operating portion and a bar portion laid over a hole formed in the flat plate. Various modes are conceivable for the rotation restricting mechanism. When the flat plate of (2) is added, the function can be realized with a simpler structure.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention. FIG. First, FIGS. 1 and 2 each show an apparatus according to an embodiment.
The front view and the side view (the main part is a cross section in both figures) of (the device for erecting and fixing the pillar with respect to the lining plate) are shown. In each figure, 1 is a pipe-shaped column main body, 2 is a flat plate welded to the lower end surface of the column main body 1, 3 is a U-shaped cross-section bearing portion welded to the lower surface of the flat plate 2, 3a, 3b The shafts 4a and 4b which are horizontally mounted on the bearing part 3 are the shafts 3a and
A plate-shaped rotation operating portion rotatably supported by 3b, 5 is an annular cylindrical body fitted outside the column main body 1 and movable in the axial direction thereof, and 6a, 6b are column main bodies 1 A locking bush 7 attached to the outer peripheral surface of the coil spring 7 is externally fitted to the column main body 1 between the locking bushes 6a, 6b and the cylindrical body 5 and biases the cylindrical body 5 downward. is there. Reference numeral 8 denotes a lining plate on which the column main body 1 is erected and fixed, and a hole 9 having a predetermined diameter D is formed in the iron plate on the front surface side.

[0011] The shape of each element constituting the tip portion of the pillar main body 1 and the interrelation thereof are important features for the function of this device. Will be described in detail.

The bearing 3 has the shafts 3a and 3b laid horizontally at positions symmetrical with respect to the center line in the vicinity of the flat plate 2 side, and the rotating members 4a and 4b are interposed between the bearing plates. Although they also function to protect them, the width W of each bearing plate is formed smaller than the diameter D of the hole 9 on the lining plate 8 side.

Each of the rotary operating portions 4a and 4b has the same planar shape and is symmetrical with respect to the axis of the column main body 1, so that the bearing portions 3a and 4b are
Each of the shafts 3a, 3b is supported, and each main body portion is configured to rotate around each of the shafts 3a, 3b of the bearing portion 3,
Cuts 11a and 11b are formed in each main part, and project from a side end face corresponding to the outside as viewed from the axis of the column main body 1 in a direction substantially perpendicular to the cuts 11a and 11b. Engagement projections 12a and 12b are formed. The width c of each of the cuts 11a and 11b is slightly larger than the thickness of the iron plate of the lining plate 8, and corresponds to the outside of the opening of each of the cuts 11a and 11b as viewed from the axis of the column body 1. The corners are formed as outwardly opening tapered surfaces 13a and 13b.

Although the flat plate 2 is interposed between the column main body 1 and the bearing 3, an elongated hole 14 is formed in the rotation region of each of the rotation operation portions 4a and 4b. , 4b are not obstructed from rotating outward. However, the long hole
A bar 15 is laid horizontally at the center of 14, and the bar 15 is engaged with a part of the upper end surface of each of the rotary operating portions 4a, 4b to cut out each of the rotary operating portions 4a, 4b. Locks in a state of being opened outward. That is, the bar 15 is
Restricts the rotation from the above-mentioned locked state to the inner side, and a rotation limiting mechanism is realized by the locking relationship between the two. Then, in the locked state, each of the rotation operating portions 4
The tapered surfaces 13a, 13b of the cuts 11a, 11b of a, 4b are in a state of protruding to the side of the bearing portion 3, and the inner corners divided by the cuts 11a, 11b are inside the bearing portion 3. Fits.

The cylindrical body portion 5 is fitted to the column main body portion 1 and slides in the vertical direction. The inner diameter Q of the flat plate 2 is larger than the other portions, and the inner diameter Q is as described later. In a state in which the rotary operating portions 4a, 4b are rotated and the cuts 11a, 11b are horizontal (see FIG. 4), the diameter becomes slightly larger than the distance between the outer surfaces of the engaging projections 12a, 12b. ing. Note that, since the cylindrical body portion 5 is urged downward by the coil spring 7, the lower end surface thereof is held in contact with the flat plate 2 in the initial state of FIG.

Next, the apparatus of this embodiment is erected and fixed in the hole 9 on the lining plate 8 side in the following operation procedure based on the above configuration. First, when the column main body 1 is held up, the respective rotating members 4a and 4b are suspended depending on gravity, so that the respective rotating members 4a and 4b are in the initial locked state shown in FIG. Therefore, when the bearing 3 is inserted into the hole 9 on the lining plate 8 side, the tapered surfaces 13a, 13b of the respective rotating members 4a, 4b are brought into contact with the bearing.
3, the tapered surfaces 13a, 13b engage with the edge of the hole 9 of the lining plate 8, and each of the rotation operating parts 4a, 4b cuts the lining plate 8 while rotating. Accept into 11b.

The state at that stage is shown in FIG.
As the amount of insertion increases, each of the rotation operating portions 4a and 4b rotates in a double-opened manner, and each of the tapered surfaces 13a and 13b
9 are guided smoothly into the cuts 11a and 11b, but in parallel with this, when the rotation angle of each of the rotation operating parts 4a and 4b increases, the tip of the engaging projections 12a and 12b becomes flat. Two
And comes into contact with the lower end surface of the cylindrical body portion 5 through the elongated hole 14 of the cylindrical member 5.

Further, when the insertion amount of the bearing portion 3 is further increased, the engagement protrusions 12a and 12b of each of the rotation operation portions 4a and 4b press the lower surface of the cylindrical body portion 5 and resist the urging force of the coil spring 7. Each of the rotation operation parts 4a and 4b rotates while lifting the cylindrical body part 5 upward.
Then, as shown in FIG. 4, when the directions of the cuts 11a and 11b become horizontal, the respective rotary operating portions 4a and 4b
The lower side surface in 1b comes into contact with the lower side surface of the lining plate 8, and at the same time, a part of the side end surface on which the engaging projections 12a and 12b are formed abuts on the lower end surface of the column body 1. And no longer rotate.

By the way, the notch 11 of each of the rotary operating parts 4a, 4b
When the directions of a and 11b become horizontal, each engaging projection 12a and 12b
Is projected in a direction parallel to the axis of the column main body 1 on the upper side, but the inner diameter Q of the cylindrical body 5 on the flat plate 2 side is outside the engagement projections 12a and 12b in this state as described above. As shown in FIG. 4, the cylindrical body portion is configured so as to fit on the side surface.
5 is released from the state of contact with each of the engagement protrusions 12a, 12b, and is automatically fitted to the outside of each of the engagement protrusions 12a, 12b by the urging force of the coil spring 7. By the above operation, the procedure of erecting and fixing the lining plate 8 of the apparatus according to this embodiment is completed, but in this state, each notch 1 of each of the rotating members 4a and 4b is cut.
1a and 11b sandwich the opposing edges of the holes 9 of the lining plate 8 deep inside, and the flat plate 2 comes into close contact with the surface of the lining plate 8.

Each of the rotation operating portions 4a and 4b cannot be rotated in any direction due to the cylindrical body 5 being fitted to the engaging projections 12a and 12b. The perfect conditions are established for the external force in the pulling / pushing direction and the external force from the side, and the flat plate 2 is in close contact with the surface of the lining plate 8 and the external force from any direction on the column body 1 Strong standing conditions have been secured.
In other words, according to the apparatus of this embodiment, it is possible to automatically stand and fix the column main body 1 by simply inserting the bearing 3 into the hole 9 on the lining plate 8 side. In this embodiment, since each of the rotating members 4a and 4b is formed as a relatively thin plate-shaped element, the standing strength is reinforced by the flat plate 2. , 4b as thick block-shaped elements, it is possible to provide standing strength that can sufficiently counteract external forces from all directions by itself. In this case, the flat plate 2 becomes unnecessary.

On the other hand, the column main body 1
In order to remove it, as shown in FIG. 5, it is only necessary to lift the cylinder 5 upward against the urging force of the coil spring 7 and pull the column main body 1 upward. In the pulling-out process, since each of the engagement protrusions 12a and 12b is released from the externally fitted state of the cylindrical body portion 5, each of the rotation operation portions 4a and 4b can be rotated downward, and When 1 is pulled out, the edge of the hole 9 of the lining plate 8 is smoothly released while rotating in the downward direction by the engagement between the lower surface of the lining plate 8 and the lower surfaces of the cuts 11a and 11b. The operation returns to the initial state shown in FIG.

As described above, the apparatus according to the present embodiment has a simple construction and a simple procedure based on a rationally configured mechanism.
Although fixing is possible, the urging mechanism by the locking bushes 6a, 6b and the coil spring 7 is not necessarily an essential component. The reason is that the cylindrical body 5
Is always urged downward by gravity, so the coil spring 7
Even if it is not urged by the cylinder body 5, the engagement projections 12a, 1
This is because it is externally fitted to 2b.

Further, in this embodiment, each of the rotation operating portions 4
As shown in FIG. 1, the rotation restricting mechanisms of a and 4b are constituted by a locking relationship between a part of them and a bar 15 laid horizontally in the elongated hole 14 of the flat plate portion 2. There is no need to use a mechanism, and a mechanism as shown in FIGS. 6 and 7 can also be employed.
6, the bar 15 is not provided in the long hole 14 of the flat plate 2, but a short columnar spacer 21 is provided substantially at the center of the bearing 3, and the spacer 21 and the inner side surfaces of the respective rotation operating parts 4a and 4b are provided. Is a mechanism for restricting the rotation so that the contact is made. 7, the bar 15 is not provided in the same manner as described above, and each of the rotary operating portions 4a ', 4
This is a mechanism for restricting rotation by making b 'a planar shape such that the opposing side surfaces abut against each other. Naturally, both cuts 11
The tapered surfaces 13a, 13b formed at the outer corners of the a, 11b are projected to the side of the bearing 3.

[0024]

According to the "column standing / fixing device" of the present invention, the following effects can be obtained by having the above configuration. According to the first aspect of the present invention, a column is erected and fixed in a hole formed in a plate, and the operation of releasing the fixed state is extremely easy. By applying the method, the work efficiency of creating / dismantling the temporary fence is greatly improved. In addition, the erecting and fixing mechanism can secure robust mechanical fixing conditions, and the main part can be made small at the tip of the column main body, so the column is significantly lighter than the conventional method -It has the advantage that it can be miniaturized. The invention according to claim 2 is such that the edge of the hole on the plate side is smoothly received into the notch of each rotary operating part when the column is erected, and is smoothly released when the column is pulled out, so that the mechanism is smoothly operated. Realize the operation. According to the third aspect of the present invention, the provision of the flat plate ensures a strong standing and fixing condition against an external force in any direction with respect to the column main body. According to a fourth aspect of the present invention, the cylindrical body is always handled as a set with the column main body, and the outer fitting operation of the cylindrical body to the engagement projection of each of the rotation operating parts at the time of standing is automated. To improve the performance. The invention of claim 5 is
Provided is to realize a simpler configuration of the rotation limiting mechanism when a flat plate is provided.

[Brief description of the drawings]

FIG. 1 is a front view (a main part is a cross section) of a device for erecting and fixing a pillar to a lining plate according to an embodiment.

FIG. 2 is a side view (a main part is a cross section) of a device for erecting and fixing a pillar to a lining plate according to an embodiment.

FIG. 3 is a front view (a main portion is a cross section) of the device in a process of erecting a pillar.

FIG. 4 is a front view (a main portion is a cross section) of the apparatus when the standing and fixing of the pillar is completed.

FIG. 5 is a front view (a main part is a cross section) of the device when the column is pulled out.

FIG. 6 is a sectional view of a main part showing another embodiment of the rotation restricting mechanism.

FIG. 7 is a sectional view of a main part showing another embodiment of the rotation restricting mechanism.

FIG. 8 is an external perspective view showing a state where a temporary fence is applied to the laid lining plate.

FIG. 9 is a front view showing the structure of a pillar standing / fixing device according to the related art.

[Explanation of symbols]

1 ... pillar body, 2 ... flat plate, 3 ... bearing, 3a, 3b ... shaft, 4a, 4b,
4a ', 4b' ... rotating operation part, 5 ... cylindrical body part, 6a, 6b ... locking bush, 7 ... coil spring, 8, ... 51 ... lining plate, 9 ... hole, 11a, 11b ...
Notches, 12a, 12b ... engaging projections, 13a, 13b ... tapered surface, 14
... Long hole, 15 ... Bar, 21 ... Stopper, 52 ... Area where the lining plate is removed, 53 ... Temporary fence, 54 ... Hole of the lining plate, 55 ... Column, 56 ... Horizontal bar, 61 ... Hollow cylinder , 62 ... flat plate, 63 ... pillar main body, 64 ... hook part, 65 ... male screw, 66 ... working rod, 67 ... nut, 68 ... handle, 69 ... fastening part.

Claims (5)

[Claims] 1. A pillar erecting / fixing device for detachably erecting / fixing a pillar in a hole formed in a plate, wherein a bearing portion to be inserted into a hole on the plate side is provided at a tip of the pillar. Two main plates, each of which has a main body portion pivoted on the tip end side of each of the two main shafts provided at symmetric positions with respect to the axis of the main body portion in the bearing portion. -Shaped or block-shaped element, in each main part is formed a notch for inserting and holding a plate, and an engaging projection protruding in a direction perpendicular to the direction of the notch is formed. Limiting the rotation of each of the rotation operating portions so that the angle formed by each of the rotation operation portions and the direction of the cut of each of the rotation operation portions with respect to the axis of the column main body is not less than a predetermined angle. And
A rotation limiting mechanism for setting the predetermined angle within a range in which the opening of each cut can receive the edge of the hole on the plate side; A cylindrical body for internally fitting engagement projections of each of the rotation operating portions in a state where each of the rotation operating portions has turned to a position substantially perpendicular to the axis of the column main body portion. Standing and fixing device. 2. The column standing / fixing device according to claim 1, wherein an outer corner portion of the opening portion of the notch of each of the rotation operating portions as viewed from the axis of the column main body portion is formed as an outwardly tapered surface. 3. A flat plate having an area larger than the diameter of the hole on the plate side is interposed between the column and the bearing portion in the column main body, and the thickness of the flat plate is adjusted so that the direction of the cut of each rotation operating portion is the axis of the column main body. In a state in which each of the rotation operating portions has been rotated to a position substantially perpendicular to the center, the distance between the tip end surface of the pillar and a surface corresponding to the rotation direction side in the cut of each of the rotation operation portions is substantially equal to, and 3. The column standing and fixing device according to claim 1, wherein a hole is formed in the flat plate so as not to hinder the rotation of each rotation operating portion. 4. An energizing mechanism for resiliently urging the cylindrical portion toward the distal end in the column main body portion, wherein each engagement projection causes the end face of the cylindrical body portion to rotate when each of the rotation operating portions rotates. The cylindrical body portion fits each of the engagement protrusions in a state in which the direction of each of the engagement protrusions is pushed up and is substantially parallel to the axial direction of the column main body portion. Standing and fixing device for pillar 3. 5. The pillar according to claim 3, wherein the rotation restricting mechanism is formed by an engagement mechanism between a part of the rotation operating portion and a bar portion laid over a hole formed in the flat plate. apparatus.