JPH10194658A - Hanging clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure clamping of a building material and to facilitate clamping operation by remote operation by changing a position of a clamping member on the fixed side and the movable side in accordance with dimensions of the building material to clamp. SOLUTION: When tensile force works on a wire 150, a movable side clamp member 135 makes contact with an upper surface side of a beam 200 with pressure, clamps the beam 200 between a fixed side clamp member 124 and the movable side clamp member 135 and transfers and places it at a specified point. When the tensile force of the wire 150 is released, a state where the movable side clamp member 135 makes contact with the upper surface side of the beam 200 is removed, a clamp main body 110 is lowered by its dead weight, the movable side clamp member 134 is engaged by a hook member 190 on the side of the clamp main body 110, the clamp member 135 and the clamp member 124 maintain a parted state, and accordingly, clamping of the beam 200 is secured and clamping release by remote operation is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension clamp which can easily and reliably hold and open a beam in lifting a beam.

[0002]

2. Description of the Related Art For example, a hanging clamp as shown in FIG. 8 has been known as a means for sandwiching and lifting a building material.

That is, the legs 20 of the suspension clamp 10,
30 includes a fixed-side holding piece 21 and a movable-side holding piece 31.
The clamp interval between the fixed-side holding piece 21 and the movable-side holding piece 31 is two mounting shafts 2.
2 can be changed.

[0004] A building material 40 is positioned between the fixed-side holding piece 21 and the movable-side holding piece 31, and the chain 5 is moved.
When the suspension ring 31 is pulled up by 0, the link 32 rotates counterclockwise, the link 34 rotates counterclockwise via the link rod 33, and the movable side holding piece 31 protrudes. Fixed side holding piece 21 and movable side holding piece 31
The building material 40 is sandwiched and lifted therebetween.

At this time, along with the movement of the link bar 33, the slide bar 35 is lifted upward, and the clutch mechanism 3
6, the downward movement of the slide bar 35 is restricted, and the movable side holding piece 31 is prevented from moving, so that the fixed side holding piece 21 and the movable side holding piece 31 are prevented from moving.
The sandwiching of the building material 40 therebetween is ensured.

On the other hand, after moving the building material 40 to the destination,
When releasing the clamping state of the building material 40 by the hanging clamp 10, after releasing the clutch action of the clutch mechanism 36 on the slide bar 35, the chain 50 is lowered.
The link 32 pivots clockwise, the link 34 pivots clockwise via the link bar 33, and the movable holding piece 31 is drawn into the leg 30 side, so that the movable holding piece 31 is Move away from building material 40.

[0007]

As described above, in the conventional hanging clamp 10 described above, the movable side holding piece 31 protrudes by pulling up through the chain 50, and the building material 40 is moved to the fixed side holding piece 21. By being sandwiched between
The lifting of the building material 40 becomes easy, and the release of the clamping of the building material 40 by the hanging clamp 10 is performed by releasing the clutch action of the clutch mechanism 36 on the slide bar 35 and then lowering the chain 50 so that the movable-side holding piece 31 becomes a leg. The movable side holding piece 31 is pulled into the building material 4 side.
It becomes easy by moving away from zero.

However, in the hanging clamp 10 having such a configuration, the movable holding piece 31
The holding force to the building material 40 due to the force is increased, so that the fixed side holding piece 21 and the movable side holding piece 3
1, the clamping operation with respect to the building material 40 is performed in a direction (horizontal direction) perpendicular to the lifting direction of the building material 40. Therefore, the building material 40 is fixed to the fixed-side holding piece portion for some reason. There is a high risk of falling off from between the movable member 21 and the movable-side holding piece 31.

In such a hanging clamp 10,
When releasing the clamped state of the building material 40 by the hanging clamp 10, it is necessary to release the clutch action of the clutch mechanism 36 on the slide bar 35, so that it is impossible to release the clamp by remote control, especially in a place where the scaffold is poor. There is a risk that the work will be hindered.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to provide a hanging clamp that can securely clamp a building material and can easily release a clamp by remote control. Aim.

[0011]

According to the first aspect of the present invention,
A hanging clamp for lifting a building material, a rod-shaped clamp body, provided at a lower end side of the clamp body, and extended in a direction orthogonal to an axial direction of the clamp body, and a tip portion thereof is directed upward. A fixed-side clamp member having a bent clamp piece, and movable along the axial direction of the clamp body, and extends in parallel with the fixed-side clamp member, and has a tip portion downward. A movable-side clamp member having a bent clamp piece, and inserted into the clamp body, one end of which is connected to the movable-side clamp member, and the other end of which is the upper end of the clamp body. And a connecting portion between the one end of the wire and the movable side of the clamp member inside the clamp body. A roller which is provided at a lower position, hooks the wire and folds the wire upward, and a movable-side clamp member which is provided at an upper end portion of the clamp body and moves upward along the axial direction of the clamp body. And a mating hook member.

According to the present invention, the building material is clamped between the fixed-side clamp member and the movable-side clamp member, and a tensile force acts on the wire, so that the movable-side clamp member is placed on the upper surface side of the building material. Press against On the other hand, when the building material clamped and lifted is transferred to a predetermined location and the tensile force on the wire is released, the movable clamp member is brought into contact with the upper surface side of the building material, and only the clamp body side is under its own weight. As a result, the movable clamp member is engaged by the hook member on the clamp body side, and the separated state between the movable clamp member and the fixed clamp member is maintained.

According to a second aspect of the present invention, the fixed-side clamp member is detachably attached to a fixed-side clamp support member fixed to a lower end portion of the clamp body, and the movable member is movable. The side clamp member is attached to the movable side clamp support member which is movable along the axial direction of the clamp body so as to be able to be pulled out, and the fixed side and the movable side are fixed in accordance with the dimensions of the building material to be clamped. The position of the clamp member on the side can be changed.

According to the present invention, it is possible to clamp building materials having different dimensions by changing the positions of the fixed side clamp member and the movable side clamp member with respect to the fixed side clamp support member and the movable side clamp support member.

According to a third aspect of the present invention, the hook member is provided with a hook claw portion and supported rotatably with respect to a shaft attached to an upper end portion of the clamp body. On the movable side of the clamp member, an engaging portion engaged by the hook claw portion is provided,
When the movable-side clamp member moves upward along the axial direction of the clamp main body and the engaging portion abuts on the hook claw portion, the clamp member rotates, and the hook claw portion is engaged with the hook claw portion. After being removed from the movement locus of the joint portion, the clamp member is rotated by its own weight and returns to the movement locus of the engagement portion, so that the engagement portion is engaged by the hook claw portion. It is characterized by.

According to the present invention, when the movable clamp member moves upward along the axial direction of the clamp body and the engaging portion abuts on the hook claw portion, the clamp member rotates and the hook claw portion is engaged. After being removed from the movement locus of the joint portion, the clamp member is rotated by its own weight and returns to the movement locus of the engagement portion, whereby the engagement portion is engaged by the hook claw portion. Accordingly, the engagement state of the engaging portion by the hook claw is released by removing the hook claw from the movement locus of the engaging portion by the rotation of the clamp member.

According to a fourth aspect of the present invention, a regulating member for regulating the amount of rotation of the clamp member is provided on both sides of the clamp member.

In the present invention, since the amount of rotation of the clamp member is regulated by the regulating members disposed on both sides of the clamp member, fluttering of the clamp member is suppressed, and the engagement of the engaging portion by the hook claw portion is suppressed. Is ensured.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a suspension clamp according to the present invention. As shown in these figures, the hanging clamp 100 is provided with a prism-shaped clamp body 110.

The lower end of the clamp body 110 has a shaft hole 1
The fixed-side clamp support member 120 having the component 21 is provided integrally. On the lower surface side of the fixed-side clamp support member 120, a clamp member 124 having a guide groove 122 provided in a direction perpendicular to the axial direction of the clamp body 110 and a clamp piece 123 bent upward is used for bolts 125. Attached through.

Here, the clamp member 124 can be pulled out of the fixed-side clamp support member 120 by loosening the bolt 125 fitted in the guide groove 122, and the dimensions of the beam 200 as a building material The position can be changed accordingly.

Here, the tip of the bolt 125 is formed in a chevron shape, so that it slightly bites into the beam 200 at the time of clamping to prevent the beam 200 from being displaced.

Also, at the lower end of the clamp body 110,
An abutting portion 111 is provided to abut one side surface of the beam 200, and the clamp piece 123 is
, The beam 200 is held in a stable state.

Further, a cylindrical member 130 is slidably mounted on the clamp body 110. Cylindrical member 130
A movable-side clamp support member 132 having a shaft hole 131 is provided integrally at a substantially central portion of the movable member.

On the upper surface side of the movable clamp support member 132, a clamp member 135 having a guide groove 133 provided in a direction orthogonal to the clamp body 110 and a clamp piece 134 bent downward is provided with a bolt 136.
Attached through.

Here, the clamp member 135 can be pulled out of the movable clamp support member 132 by loosening the bolt 136 fitted in the guide groove 133 in the same manner as described above. At the same time, the position can be changed.

Here, the tip of the bolt 136 is also formed in a mountain shape as described above, and the beam 200 is used for clamping.
, And the beam 200 is prevented from shifting.

A contact portion 137 is provided at the lower end of the cylindrical member 130 to abut one side surface of the beam 200, and the clamp piece 134 receives a corner of the beam 200, The holding of the beam 200 is performed in a stable state.

Therefore, the clamp members 124,
By changing both the fixing positions of the 135, for example, as shown in FIG. 5, stable clamping of building materials having different dimensions such as a beam 200 of three dimensions and five dimensions to a beam 201 of one dimension and five dimensions is performed. Is available.

Further, the shaft 141 of the bolt 140 is inserted into the upper end of the cylindrical member 130. A washer 142 and an engagement cylinder 143 are attached to an end of the shaft 141, and the fastening force of the nut 144 secures the shaft 141 and prevents the shaft 141 from coming off from the shaft 141. I have. Here, when the engagement cylinder portion 143 moves to the upper end portion side of the clamp body 110, it is engaged by a hook claw portion 191 of a hook member 190 described later.

The shaft 141 of the bolt 140 is engaged with a guide groove 112 formed in the clamp body 110, and the shaft 141 is guided by the guide groove 112 when the cylindrical member 130 moves. As a result, the cylindrical member 13
0 can be moved without rattling.

Further, the shaft 141 of the bolt 140
One end 151 of the wire 150 is wound.

The wire 150 is connected to the clamp body 11
0 is attached to a rotatable roller 161 via a bolt 160 attached to a position below the shaft 141 of the bolt 140 on the lower end side of the bolt 140, and a bolt is attached to the upper end side of the clamp body 110. 162
The opening 113 formed in the clamp body 110 is hooked on a roller 163 that is rotatable through
It is drawn from.

Further, the other end 152 of the wire 150 is connected to the projecting member 170 attached to the upper end of the clamp body 110 by a bolt 171.
Rollers 173 and 173 which are rotatable via 72 and 174
175 is drawn out to the outside.

When the other end 152 is pulled up, the tensile force of the wire 150 is reduced by the bolt 140.
And acts as a force for moving the cylindrical member 130 downward.

Therefore, the clamp members 124, 135
As the weight of the beam 200 to be clamped is increased, the clamping force of the clamp members 124 and 135 is increased, so that the beam 200 is surely clamped.

The roller 173 is located at a position offset with respect to the axial direction of the clamp body 110, and is offset toward the clamp members 124 and 135. Since the engagement position between the wire 173 and the wire 150 is near the position of the center of gravity of the beam 200, it is possible to lift the beam 200 while maintaining the horizontal state. This facilitates installation with the beam 200 suspended.

On the upper end side of the clamp body 110, there is provided a hook member 190 rotatably attached to the shaft 181 of the bolt 180. The nut 182 is attached to the shaft 181 to prevent the bolt 180 from coming off and the hook member 190 from coming off.

On the upper end side of the clamp body 110, an engaging piece 1 is provided by a bolt 180 and a nut 182.
An engagement member 184 having 83 is attached. Further, the above-described shaft 1 is provided on the upper end side of the clamp body 110.
An engagement piece 185 is provided, which is attached through the 62.

Since the amount of rotation of the hook member 190 having the hook claw portion 191 is restricted by the engagement pieces 183 and 185, the fluttering of the hook member 190 is suppressed. Engagement of the engagement cylinder part 143 with the hook claw part 191 by the movement of the cylinder member 130 is reliably performed.

Here, when the engaging tubular portion 143 is engaged with the hook pawl 191, the engaging tubular portion 143 comes into contact with the hook pawl 191, so that the hook pawl 191 is engaged with the engaging tubular portion 143. The hook claw 191 is disengaged from the movement locus and moves above the hook claw 191, so that the hook claw 191 rotates by its own weight and engages the engagement cylinder 143. . Thereby, the clamp member 124
And 135 are kept separated from each other, thereby facilitating the work of clamping the beam 200 to be clamped next.

When the clamp member 135 is lowered to the lower end of the clamp body 110, the cylindrical member 130
By slightly rotating the hook member 190 clockwise while the hook member 190 is slightly moved upward, the hook claw portion 191 is removed from the locus of movement of the engagement cylinder portion 143, so that the clamp member 135 can be easily moved downward. It can be moved.

Next, a method of using the hanging clamp 100 having the above-described configuration will be described. In the drawings described below, a case in which the beam 200 is lifted out of the beams 200 and 201 having different dimensions will be described.

First, when lifting the beam 200, two suspension clamps 100 are prepared as shown in FIG.

At this time, the other end 152 of the ring 150 of the wire 150 is connected to the hooks 2 at both ends of the square pipe 220 suspended by the crane 230 via the wire 222.
Hook on 21.

As described with reference to FIG.
The positions of the clamp members 124 and 135 relative to the fixed-side clamp support member 120 and the movable-side clamp support member 132 are adjusted to the dimensions of the beam 200 by loosening the members 5 and 136.

At this time, as described above, the engagement cylinder 14
3 is engaged with the hook claw portion 191 of the hook member 190,
The clamp member 135 side is positioned upward.

On the other hand, both ends of the beam 200 are placed on the sleepers 240. Accordingly, a space for inserting the clamp member 124 on the fixed side is secured below the beam 200.

In this state, each hanging clamp 10
After the zero clamp member 124 is inserted into the lower side of the beam 200, the hook member 190 is turned to rotate the hook claw portion 191.
The engagement of the engagement cylindrical portion 143 by the
5 is lowered to make contact with the upper surface of the beam 200.

In this state, when the square pipe 220 is lifted by the crane 230, each roller 161, 163,
When the wire 150 hooked on the wire 173 is pulled, the shaft 141 of the bolt 140 around which the one end 151 of the wire 150 is wound is pulled downward, and the cylindrical member 130 is pulled downward.

When the beam 200 is clamped by the clamp members 124 and 135 and at the same time each lifting clamp 100 is lifted by the crane 230,
The weight of the beam 200 is applied to the wire 150, and the pressing force on the beam 200 by the clamp member 135 is increased.

At this time, each of the clamp members 124, 135
The tips of the bolts 125 and 136 fixing the
The beam 200 is slightly bitten to prevent the beam 200 from being displaced. At this time, as described with reference to FIG.
The clamp piece 123 of each clamp member 124, 135,
Since the side surface of the beam 200 is pressed by the 134 and the abutting portions 111 and 137, the beam 200 is
Is prevented.

The two hanging clamps 100
After the beam 200 is lifted up and the both ends of the beam 200 are assembled into predetermined locations, the crane 230 is slightly lowered to release the pulling force on the wire 150. Thus, the clamp body 110 and the like of the suspension clamp 100 are moved downward by their own weights while the clamp member 135 is left at the upper end of the beam 200.

At this time, the downward movement of the clamp body 110 and the like is performed by the engagement between the shaft 141 of the bolt 140 on the cylindrical member 130 side integrated with the clamp member 135 and the guide groove 112 of the clamp body 110. It is done smoothly.

With the downward movement of the clamp body 110 and the like, the hook member 190 attached to the upper end of the clamp body 110 and the engagement cylinder attached to the shaft 141 of the bolt 140 on the cylinder member 130 side. The relative position with respect to the hook portion 19
The hook member 190 is brought into contact with the
Is slightly rotated about the shaft portion 181 of the bolt 180 as a fulcrum and deviates from the movement trajectory of the engagement cylinder 143, and then returns to the movement trajectory of the engagement cylinder 143 by its own weight. Is locked by the hook claw portion 191.

Thus, the clamp members 124, 135
Are separated from each other, so that the suspension clamp 100 can be easily removed from the beam 200.

Next, when the next beam 200 is lifted, the two hanging clamps 100 whose clamp members 124 and 135 are separated from each other are lowered to the ground by the crane 230, and then, as shown in FIG. The clamp member 124 at the lower end of the clamp body 110 is
Into the bottom of the.

In this state, the cylinder member 130 to which the clamp member 135 is integrally mounted is slightly lifted, and the hook member 190 is slightly rotated about the shaft 181 of the bolt 180 as a fulcrum to move the engagement cylinder 143. By removing it from above, the lock of the engagement cylinder portion 143 by the hook claw portion 191 is released, and the cylinder member 130 can be moved downward.

The two lifting clamps 100 are lifted by the crane 230 with the clamp member 135 in contact with the upper surface of the beam 200,
Similarly to the above, the next beam 200 is clamped by the clamp members 124 and 135, and the beam 200 is lifted.

As described above, in the present embodiment, when the tensile force acts on the wire 150, the movable-side clamp member 135 is pressed against the upper surface of the beam 200 (201) as a building material, and the movable-side clamp member 135 is pressed. When the beam 200 (201) is clamped between the clamp member 124 and the movable-side clamp member 135, the beam 200 (201) clamped and lifted is transferred to a predetermined location, and the tensile force on the wire 150 is released. The movable clamp member 135 is a beam 200 (201).
Is brought into contact with the upper surface of the clamp body 110.
Since only the side is lowered by its own weight, the movable clamp member 134 is engaged by the hook member 190 on the clamp body 110 side, and the separated state between the movable clamp member 135 and the fixed clamp member 124 is maintained. Therefore, the beam 200 (201) can be securely clamped, and the clamp can be easily released by remote control.

Further, by changing the positions of the fixed-side clamp member 124 and the movable-side clamp member 135 with respect to the fixed-side clamp support member 120 and the movable-side clamp support member 132, it is possible to clamp the beams 200 (201) having different dimensions. Becomes possible.

Further, when the movable clamp member 135 moves upward along the axial direction of the clamp body 110 and the engaging cylinder portion 143 as the engaging portion comes into contact with the hook claw portion 191, the clamp member 190 is moved. After the rotation, the hook claw portion 191 is removed from the movement locus of the engagement cylinder portion 143, the clamp member 190 is rotated by its own weight, and returns to the movement locus of the engagement cylinder portion 143. The cylinder part 143 is the hook claw part 1
91 are engaged.

Accordingly, the hook claw 191 is disengaged from the locus of movement of the engagement cylinder 143 by the rotation of the clamp member 190, whereby the engagement state of the engagement cylinder 143 by the hook claw 191 is released.

Further, engaging pieces 183 and 185 which are regulating members provided on both sides of the clamp member 191 are provided.
Because the amount of rotation of the clamp member 190 is regulated by this, the fluttering of the clamp member 190 is suppressed, and the engagement of the engagement cylinder 143 by the hook claw 191 is reliably performed.

[0065]

As described above, according to the hanging clamp of the present invention, the tension force acts on the wire, so that the movable-side clamp member presses against the upper surface of the building material, and the fixed-side clamp member. When the building material is clamped between the and the movable clamp member, the clamped and lifted building material is transferred to a predetermined location, and when the tensile force on the wire is released, the movable clamp member contacts the upper surface of the building material. As a result, only the clamp body side is lowered by its own weight, whereby the movable clamp member is engaged by the clamp body side hook member, and the separated state between the movable clamp member and the fixed clamp member is reduced. Since it is maintained, the clamping of the building material can be reliably performed, and the clamp release by remote control can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a suspension clamp according to the present invention.

FIG. 2 is a perspective view showing a state in which a movable clamp member of FIG. 1 is moved upward.

FIG. 3 is a sectional view showing the suspension clamp of FIG. 1;

FIG. 4 is a sectional view showing the suspension clamp of FIG. 2;

FIG. 5 is a view for explaining an operation of a clamp member in the suspension clamp of FIG. 1;

FIG. 6 is a view for explaining how to use the suspension clamp of FIG. 1;

FIG. 7 is a view for explaining how to use the suspension clamp of FIG. 1;

FIG. 8 is a view showing a conventional suspension clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Suspension clamp 110 Clamp main body 111, 137 Abutment part 120 Fixed side clamp support member 122, 133 Guide groove 124, 135 Clamp piece 130 Tube member 132 Movable side clamp support member 143 Engagement cylinder part 150 Wire 161, 163, 173, 175 Roller 183, 185 Engagement piece 190 Hook member 191 Hook claw 200, 201 Beam

Claims (4)

[Claims] 1. A hanging clamp for lifting a building material, comprising: a rod-shaped clamp body; a clamp body provided at a lower end portion of the clamp body; and extending in a direction perpendicular to an axial direction of the clamp body. A fixed-side clamp member having a clamp piece having a tip bent upward, and movable along the axial direction of the clamp body, and extending parallel to the fixed-side clamp member; A movable clamp member having a clamp piece with a distal end bent downward; inserted into the clamp body, one end connected to the movable clamp member, and the other end clamped A wire pulled out from the upper end side of the main body to the outside; one end side of the wire inside the clamp main body and the movable side clamp portion A roller which is provided at a position lower than the connection point with the side, and which hooks the wire and folds the wire upward; and a movable side which is provided on an upper end side of the clamp body and moves upward along the axial direction of the clamp body. And a hook member for engaging the clamp member. 2. The fixed-side clamp member is detachably attached to a fixed-side clamp support member fixed to a lower end portion of the clamp body, and the movable-side clamp member is It is attached to a movable-side clamp support member that is movable along the axial direction of the clamp body so as to be able to be pulled out, and positions of the fixed-side and movable-side clamp members according to the dimensions of the building material to be clamped. 3. The hanging clamp according to claim 1, wherein the hanging clamp is changeable. 3. A hook claw portion is provided on the hook member, and the hook member is rotatably supported on a shaft attached to an upper end portion of the clamp body. Is provided with an engaging portion that is engaged by the hook claw portion. The movable-side clamp member moves upward along the axial direction of the clamp main body, and the engaging portion is the hook claw. When the clamp member rotates, the clamp member rotates, and after the hook claw portion is removed from the movement locus of the engagement portion, the clamp member rotates by its own weight, and the movement locus of the engagement portion. The hanging clamp according to claim 1, wherein the hook portion is engaged with the hook portion by returning upward. 4. The hanging clamp according to claim 3, wherein a regulating member that regulates the amount of rotation of the clamp member is provided on both sides of the clamp member.