JPH08188371A - Floor iron plate hanger - Google Patents

Abstract

PURPOSE: To lay or remove a floor iron plate by hanging it simply and efficiently, ad by using a relatively simple structure. CONSTITUTION: At the center of a traverse 4 hanging a plurality of absorbing bodies 5, 5 placing specific intervals, a hanging shaft 6 having a hanging member and a connecting metal fitting 7 at the upper end is installed movable in the vertical direction through an elastic body 8. To the connecting metal fitting 7 the upper ends of a pair of arms 9, 9, having engaging parts 9a, 9a to the edges 100, 100 of the floor iron plate 1 at the lower end, are fitted, while the base end sides of arms 10, 10 which used for connecting to the above arms 9, 9 are fitted, at the outer side of the center of the traverse 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging iron plate suspender.

[0002]

2. Description of the Related Art Generally, deep foundation work for power transmission line towers is carried out in mountainous areas or in the wilderness, and iron plates for temporary roads are installed on the ground to carry materials and equipment to such construction sites. It is necessary to lay it and remove it after the construction is completed. In the case of laying or removing such a laid iron plate, conventionally, a hole penetrating the thickness of the laid iron plate is opened in the central portion of the laid iron plate, and a U connecting tool for suspending wire is provided at the upper end of this hole.
A method was used in which a bolt-shaped hanging metal fitting (hacker) was inserted and hooked, a hanging wire from a crane was connected to the upper end of the hanging metal fitting, and lifted and lowered.

[0003]

However, in this method,
When fishing the laid iron plate, the hanging metal fittings must be set with a bar or a splint in order to secure a space for inserting the hanging metal fittings into the holes. Since it is unstable and the plate thickness direction is vertical, it is necessary to carry out ball mounting work and change the posture to a horizontal state before laying. Therefore, it takes a lot of time and labor for laying and removing, and there is a problem that the temporary road cannot be completed efficiently. Also,
As described above, when the hanging metal fittings are set, the burl or the sash is laid between the iron plate and the ground, so that there is a risk that the laid iron plate is inadvertently misaligned or falls onto the ground, and the limbs are caught. In addition, the laid iron plate is sometimes applied to pavement such as asphalt, but in this case the pavement is damaged because the bar and the splint are laid under the iron plate, and the repair must be done separately. There was a problem.

The present invention was made by research to solve the above-mentioned problems, and its purpose is to easily and efficiently hoist an laid iron plate with a relatively simple structure or to lay it. It is to provide a spread iron plate suspender that can be removed.

[0005]

In order to achieve the above object, the present invention is a combination of an adsorbent represented by an electromagnet and a pantograph type auxiliary support mechanism, that is, a plurality of adsorbents are arranged in a predetermined manner. At the center of the traverse suspended at intervals, a suspension shaft having a connecting member for connecting with a suspending member at the upper end is attached via an elastic body so as to be movable in the axial direction. The upper ends of a pair of arms having engaging portions with respect to are pivotally attached, and the base end side of the interlocking arm connected to the arms is connected to the outside of the central part of the traverse. The present invention includes, in addition to the above-mentioned configuration, a structure in which a protrusion that can come into contact with the ground is attached to the engaging portion before the grounding of the laid iron plate. The present invention is mainly used for laying and removing laid iron plates for construction of temporary roads, but also for laying and removing laid iron plates for closing construction openings for various works and underground works on general roads. It can be used for various purposes.

[0006]

When the laid iron plate is hoisted and moved, the adsorbent is arranged on the laid iron plate to adsorb the laid iron plate, and in this state, the connecting fitting is connected to the hanging member to pull the hanging shaft. As a result, the suspension shaft rises and the adsorbent is pulled by the traverse, so that the laid iron plate is lifted from the ground. Since the connecting metal fitting moves upward by the towing, the pair of arms is narrowed inward from the outwardly expanded state, and the engaging portion is automatically caught by the edge of the laid iron plate, As a result, the laid iron plate is stably lifted by the suction force of the adsorbent and the mechanical support of the pair of arms, and the laid iron plate flexes to weaken the suction force or inadvertently release the suction force. Also, the laid iron plate does not drop during suspension movement.
When the robot reaches the destination and hangs it down, the load on the arm is released at the moment the laid iron plate touches the ground, and the restoring force of the elastic body changes the relative position between the suspension shaft and the traverse, which causes the arm to move outward. Open, and the engaging part is automatically disengaged from the edge of the spread iron plate. Therefore, it can be automatically laid without requiring manpower. The same applies to removal. When the projecting body is attached to the engaging part, the projecting body comes into contact with the ground before the laid iron plate comes into contact with the ground, and the projecting body escapes outward during the subsequent final descent, and the restoring force of the elastic body works, so Even in such a state, it is possible to reliably disengage the engaging portion from the edge of the iron plate.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 5 show a first embodiment of the present invention. 1 is a laid iron plate, for example 1.5 × 3 m, 1.5 × 6 m
Those with specifications such as are used. Reference numeral 2 is an iron plate suspender according to the present invention, and 3 is a suspending member that is hung from a boom such as a truck crane (not shown). The iron plate suspender 2 first has a traverse 4 of a required length, and adsorbents 5 and 5 are suspended at least at portions near both ends in the longitudinal direction of the traverse 4. A vacuum pad may be used as the adsorbents 5 and 5, but since the surface of the spread iron plate 1 is often covered with mud or the like, a magnet is preferably used.
The magnet may be a permanent magnet, but an electromagnet is used in this embodiment in terms of weight with respect to suspension capacity and easiness of desorption. The power supply cable of the electromagnet is guided to the traverse 4 and connected to a power source mounted on a truck lane (not shown) or the like. The cable is branched in the middle and a remote control switch is attached.

The adsorbents 5 and 5 have ring-shaped connecting portions 50 and 50 at their upper ends, and the lower ends of support shafts 51 and 51 extending from the traverse 4 swing to the connecting portions 50 and 50 via pivot pins. It is possible to install. The suspension shafts 51, 51 are made of bolts or the like, and are fixed to the traverse 4 by the bearing tube 4
The support shafts 510 and 510 are slidably fitted in the shafts 2 and 42, and support the upper end of the support shaft to receive this force when the traverse 4 is lifted by lifting. For the supporting members 510 and 510, nuts are used, for example, and they are screwed into a male screw at the upper end of the support shaft.

The traverse 4 has a structure in which two strips are joined at intervals. A bearing cylinder 40 is fixed to the central portion in the longitudinal direction as shown in FIG. Has been penetrated. The suspension shaft 6 consists of bolts,
A connecting fitting 7 having a ring 70 that engages and disengages with the hook 30 of the hanging member 3 is attached to the upper end portion. A stopper (a nut in this embodiment) is provided at the lower end of the suspension shaft 6.
An elastic body 8 is mounted between the stopper 60 and the lower surface of the traverse 4 or the bearing tube 40, and the elastic body 8 urges the suspension shaft 6 downward. As the elastic body, a spring represented by a coil spring or a disc spring is usually used.

Upper ends of a pair of arms 9 and 9 are pivotally connected to the connecting fitting 7 at a relational position orthogonal to the axis of the traverse 4 by pivots 90 and 90. The arms 9 and 9 extend in an inclined shape, and at the lower end thereof, engaging portions 9a that can be engaged with and disengaged from the edges 100, 100 of the laid iron plate 1 in the width direction.
9a. As shown in FIGS. 1 and 4, the engaging portions 9a, 9a are formed by inward L-shaped or J-shaped claws, and are significantly wider than the widths of the arms 9, 9 so that they can contact the edge portion in a wide area. It has a large width w. On the other hand, yoke-shaped fulcrum fittings 41, 41 are symmetrically fixed in the region of the traverse 4 surrounding the bearing tube 40, and the lower ends of the interlocking arms 10, 10 are pivoted to the fulcrum fittings 41, 41, respectively. They are connected by pins 101, 101. The interlocking arms 10, 10 extend relatively close to the upper ends of the arms 9, 9 and are connected to the arms 9, 9 by pivot pins 102, 102. In this embodiment, hinge portions 91, 91 are provided in the longitudinal intermediate portions of the arms 9, 9 to facilitate handling during transportation and storage when not in use, and through the hinge portions 91, 91, It is foldable.

6 and 7 show a second embodiment of the present invention. In this embodiment, projections 11, 11 for pushing away the engaging portion extending substantially parallel to the axes of the arms 9, 9 are attached to the engaging portions 9a, 9a, and the engaging portion before the grounded iron plate 1 is grounded. 9a and 9a are made easy to come off. The projections 11, 11 are simply spherical or hemispherical engaging portions 9
It may be fixed to the lower side of a, 9a. Alternatively, the ball bearing is housed in a tubular casing such that the lower half of the ball bearing projects, and the base end side of the tubular casing is engaged with the engaging portions 9a, 9a.
It may be fixed to the lower side of a. In this embodiment, two rollers are used, and these rollers are rotatably supported by yoke-shaped holders 110, 110 fixed to the lower side of the engaging portions 9a, 9a. Since the other structure is the same as that of the first embodiment, the same parts or portions are designated by the same reference numerals, and the description thereof will be omitted.

It should be noted that what is shown in the drawings is only an example of the present invention, and various other modes can be adopted. For example, although the number of the adsorbents 5 is two in the embodiment, it may be four. Also, in this embodiment, the traverse 4 is the adsorbents 5, 5
Although it is movable along the support shafts 51, 51, they may not be displaced relative to each other. This can be done, for example, by welding the support shafts 51, 51 to the traverse 4 or the traverse 4
A supporting member such as a nut may be attached to the lower suspension shaft portion, and the traverse 4 may be tightened from above and below with the supporting member 510 at the upper end.

[0013]

[Operation of the embodiment] When laying the laid iron plate 1,
The adsorbents 5, 5 are arranged on the laid iron plate 1 stacked on the bed of a truck crane or the like so that the adsorbents 5, 5 are located on the longitudinal centerline. At this time, the suspension shaft 6 is held by the force of the elastic body 8 so as to largely project downward from the traverse 4,
Since the connecting fitting 7 at the upper end of the suspension shaft 6 is lowered, the left and right arms 9, 9 whose upper ends are pivotally supported by this are pushed outward through the interlocking arms 10, 10, so that the left and right arms The arms 9 and 9 are in an expanded state, and the engaging portions 9a and 9a at the lower ends of the arms 9 and 9 are provided at both edges 100 of the spread iron plate 1,
It is separated from 100. Next, if the adsorbents 5 and 5 are electromagnets, power is supplied to the adsorbents 5 and 5 via a power cable to adsorb the laid iron plate 1, and in this state, the suspension member 3 is connected to the connecting fitting 7 to operate the crane. Then, the hanging member 3 is pulled up. In this way, the suspension shaft 6 is pulled upward against the elasticity of the elastic body 8 and pulled up until the traverse 4 comes into contact with the support members 51, 510 of the support shafts 51, 51, and the support shaft 5
Since the traction force is transmitted to the adsorbents 5 and 5 via 1, 51, the spread iron plate 1 is slightly lifted while being adsorbed by the adsorbents 5 and 5.

The left and right arms 9 and 9 are changed due to the change in the height level of the connecting fitting 7 at the upper end with the start of the lifting.
Tilts toward the vertical with the upper end as a fulcrum to be narrowed, and the interlocking arms 10 and 10 change to increase the angle to try to push down the traverse 4, so that the elastic body 8 is in a compressed state. By this operation, the lower end engaging portions 9a, 9
a is automatically caught on both edges 100, 100 of the spread iron plate slightly floating from the lower spread iron plate,
There is no need to pry at the crowbar or pier. As described above, the laid iron plate 1 is horizontally suspended by the suction force of the suction bodies 5 and 5, and at the same time, the arms 9 and 9 are mechanically supported from the left and right directions to receive the load. Then, in this state, you can operate the crane to hang it from the loading platform and move it toward the planned ground. As described above, the laid iron plate 1 is not only adsorbed and held by the adsorbents 5 and 5, but is also supported in the left-right direction by the arms 9 and 9. Therefore, even if the laid iron plate bends due to its own weight during lifting to lower the adsorption force of the adsorbents 5, 5, or the adsorption force is released due to a power supply trouble or the like, the laid iron plate 1 is prevented from falling. It's safe.

Thus, when the suspension member 3 is lowered to the predetermined location and laid on the ground, the moment the suspension iron plate 1 comes into contact with the ground G is released, the elastic load that has been compressed until then is released. The traverse 4 is pushed up by the restoring force of 8. As a result, the interlocking arms 10, 10 connected to the traverse 4 change the inclination angle in a direction approaching the horizontal direction, and the left and right arms 9, 9 are simultaneously spread. As a result, the engaging portions 9a, 9a at the lower ends of the arms 9, 9 are
Is automatically disengaged from both edges 1a, 1a of the laid iron plate 1 and the supporting action is released. If the operation of the adsorbents 5 and 5 is stopped in this state, the laid iron plate 1 is laid accurately at the destination.

In the case of the second embodiment, when the suspending member 3 is lowered to be laid on the ground, the projections 11 and 11 extending below the engaging portions 9a and 9a at the lower ends of the arms 9 and 9 are formed. Therefore, before the laid iron plate 1 contacts the ground G, the protrusion 1
1, 11 are grounded on the ground G like sensors. Projection 1
Since 1 and 11 are almost parallel to the axes of the arms 9 and 9,
It shows a behavior of escaping to the outside by contact with the ground G, and since the load on the arms 9, 9 is released by the grounding of the projecting bodies 11, 11, the elastic body 8 acts so that the arm 9,
9 spreads smoothly, and the engaging portions 9a, 9a can be reliably disengaged. From the above, the laid iron plate 1 can be laid easily, reliably and safely, so that the temporary road can be constructed efficiently. Even when the laid iron plate 1 is removed, it can be easily and efficiently lifted and loaded on trucks or on the road shoulder by the same operation as described above.

Even when the apparatus of the present invention is used and stored or transported, the traverse 4 is supported by the spindle 51,
It is lowered to the vicinity of the adsorbents 5 and 5 along 51, and the arms 9 and 9 can also be folded in the middle, and if they are hung down, the interlocking arms 10 and 10 will be close to vertical, so it should be a compact form. You can In addition, the support members 510, 5
If 10 is a nut, remove it to traverse 4
If the stopper 60 is a nut, this can be removed, the base end side of the interlocking arms 10, 10 is removed from the fulcrum fittings 41, 41, and the suspension shaft 6 is attached to the bearing cylinder 40.
The arms 9 and 9 can also be separated from the traverse 4 by pulling out from the traverse 4. Therefore, it can be easily disassembled and can be packed in a small package, which makes it easy to transport it to mountainous areas.

[0018]

According to the first aspect of the present invention described above, not only the laid iron plate 1 can be adsorbed by the adsorbents 5 and 5 to be suspended and moved, but also the engaging portion 9a,
A pair of arms 9 and 9 and an interlocking arm 10,
It has a pantograph-type side edge support mechanism consisting of 10, and this automatically engages both sides of the laid iron plate to support the load as the laid iron plate is lifted, so that the laid iron plate does not drop accidentally, Also, when touching the ground, the suspension shaft 6
Since the arms 9 and 9 are expanded by the restoring force of the elastic body 8 between the traverse 4 and the traverse 4, the support of both side edges of the laid iron plate is automatically released. Therefore, it is possible to obtain an excellent effect that the work of laying and removing the laid iron plate for construction of temporary roads can be performed safely and efficiently without requiring labor and time. According to claim 2, in addition to the above effect, the protrusions 11, 11 work before the grounding of the laid iron plate to release the load of the arms 9, 9, so that the both side edges of the laid iron plate can be more reliably irrespective of the ground condition. The excellent effect that the support of can be released is obtained. According to the third aspect, the weight of the suspender can be reduced, and the detachment from the laid iron plate can be easily achieved. According to the fifth aspect, since the arms 9 and 9 can be made compact, an effect that storage and transportation can be facilitated can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of a spread iron plate suspender according to the present invention in a suspended state.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a partially cutaway side view showing a state at the start of lifting.

FIG. 6 is a side view showing a second embodiment of the present invention in a state at the moment of being suspended.

FIG. 7 is a front view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laying iron plate 4 Traverse 5,5 Adsorber 6 Suspension shaft 7 Connecting metal fitting 8 Elastic body 9,9 Arm 9a, 9a Engaging part 10,10 Interlocking arm 11,11 Projection body

Claims (5)

[Claims] 1. A suspension member 3 at the upper end of the center of a traverse 4 in which a plurality of adsorbents 5, 5 are suspended at a predetermined interval.
A suspension shaft 6 having a connecting metal fitting 7 is attached via an elastic body 8 so as to be movable in the axial direction, and the connecting metal fitting 7 is laid at the lower end to engage the edge portions 100 of the iron plate 1 with the engaging portions 9a, 9a.
The upper ends of a pair of arms 9, 9 having the above are pivotally attached, and the base end sides of the interlocking arms 10, 10 connected to the arms 9, 9 are connected to the outside of the central portion of the traverse 4. Laying iron plate suspenders. 2. A suspension member 3 at the upper end of the center of a traverse 4 in which a plurality of adsorbents 5, 5 are suspended at a predetermined interval.
A suspension shaft 6 having a connecting metal fitting 7 is attached via an elastic body 8 so as to be movable in the axial direction, and the connecting metal fitting 7 is laid at the lower end to engage the edge portions 100 of the iron plate 1 with the engaging portions 9a, 9a.
Upper ends of a pair of arms 9 and 9 are pivotally attached, and the base ends of the interlocking arms 10 and 10 connected to the arms 9 and 9 are connected to the outside of the central portion of the traverse 4 and the engagement is performed. A laying iron plate suspender characterized in that projections 11, 11 that can come into contact with the ground are attached to the portions 9a, 9a before the laying iron plate 1 comes into contact with the ground. 3. The adsorbent 5, 5 is an electromagnet, and is swingably connected to the lower ends of support shafts 51, 51 attached to the traverse 4 so as to be movable in the axial direction. Laying iron plate hangings described in crab. 4. The spread iron plate suspender according to claim 2, wherein the projections 11, 11 are rollers. 5. The spread iron plate suspender according to claim 1, which includes arms 9 and 9 that can be folded in the middle.