JP6604673B1 - hacker - Google Patents

Abstract

An object of the present invention is to provide a hacker that can be lifted stably corresponding to the thickness and width of a suspended load. A hacker 1 is hung at two places on the left and right sides, and a beam 2 that can be expanded and contracted in the length direction thereof, and a claw that is provided on both ends of the beam 2 downward and that carries a suspended load, respectively. 4 and a pair of arms 7 provided with 4. The beam 2 includes a sleeve 12, a rod 11 that slides in the sleeve 12, a screw shaft 14 that determines the position of the rod 11 in the sleeve 12, and either the sleeve 12 or the rod 11 in the length direction of the beam 2. It is connected to the screw shaft 14 via an expansion / contraction spring 19 that expands and contracts. [Selection] Figure 1

Description

The present invention relates to a hacker that lifts a suspended load such as an iron plate.

Conventionally, as a lifting tool used for lifting and transporting an iron plate or the like and lifting a large-diameter short pipe, a C-shaped hanging bracket (hacker) is used. Hook the hacker's claws on both ends (short pipe) or four points (plate material) of the suspended load, and connect or lift the suspension cable from the crane to the upper end of the hacker.

According to Patent Document 1, a hacker that lifts an iron plate is known. In this hacker, an adsorbent such as an electromagnet is placed on an iron plate to be adsorbed, and an auxiliary support mechanism for a pantograph arm is combined therewith. The arm of the auxiliary support mechanism is normally in an expanded state by an elastic body (coil spring), but when the suspended iron plate is lifted from the ground, the arm squeezes inward from the outwardly expanded state. The engagement portion is automatically hooked to the edge of the suspended load.

JP-A-8-188371

The hacker has a contact point between the hacker and the plate and an angle formed between the claw and the hanging direction depending on the shape, the thickness and width of the suspended load, and the like. For this reason, the overturning moment may also change and may be easily removed. When the thickness of the suspended load increases, the side of the suspended load hits the upper side of the hacker's claw, and if the angle of the claw increases, the point of contact with the suspended load moves to the tip of the nail, affecting the hooking of the hacker's claw. Effect.

An object of the present invention is to provide a hacker capable of stably lifting in accordance with the thickness and width of a suspended load.

In order to achieve the above object, the hacker of the present invention can slide in the first sleeve and advance and retract to the left, and slide in the second sleeve and advance and retract to the right. A beam having left and right rods composed of a second rod, and extending and contracting to the left and right by sliding the left and right rods, and a suspension fitting to which a suspension cable is connected to each of the left and right rods is provided. And the beam
An arm extending downward from each of the rods, the arm provided with a claw for carrying a suspended load,
The left and right rods are connected to the sleeve via an elastic spring that expands and contracts in the length direction of the beam.

According to the hacker of the present invention, the contact angle between the claw and the suspended load can be made constant regardless of the thickness and width of the suspended load by suspending the beam horizontally. In addition, since the beam can be expanded and contracted in the length direction, the distance between the claws can be adjusted, and it corresponds to the diversity of the width of the suspended load. The screw shaft and the sleeve are connected by an extension spring that expands and contracts in the direction of the screw axis, and the extension spring is compressed when the beam is suspended by the suspension rope, and the interval between the arms can be reduced.

It is a figure which shows the hacker by a present Example, FIG. 1A is a top view, FIG. 1B is a partial side view, FIG. 1C is a front view. It is a figure which shows the internal structure of a hacker, FIG. 2A is a cutaway view, FIG. 2B is an exploded view FIG. 3A is a diagram illustrating the operation of a hacker, FIG. 3A is a diagram illustrating a state before suspension, and FIG. 3B is a diagram illustrating a state after suspension.

In general, a hacker is a C-shaped hanging bracket, and each bracket is suspended by a suspension rope such as a chain or a wire. In the hacker of the present invention, the beam is suspended horizontally at two left and right using an isometric suspension cable. In the case of a short pipe suspension (two-point suspension), arms are installed in the vertical direction at both ends of the beam, and claws for carrying a suspended load are provided on the arms. For the four-point suspension for hanging the plate material, two beams are connected by a connecting bar. Since the claw and the angle are provided on the beam side, the contact angle between the claw and the suspended load can be made constant regardless of the thickness and width of the suspended load.

Since the beam can be expanded and contracted in the length direction of the beam, the distance between the claws can be adjusted, corresponding to the diversity of the width of the suspended load. The beam has a sleeve and a rod that slides within the sleeve, and the screw shaft determines the position of the rod within the sleeve. The screw shaft is connected to either a sleeve or a rod via an expansion spring that expands and contracts in the screw shaft direction. The telescopic spring is compressed when the beam is suspended by the suspension rope, and narrows the distance between the arms.

Hereinafter, the hacker of an example is explained based on a drawing. FIG. 1 shows a four-point hacker 1 used for hanging a plate material. In FIG. 1A, in the case of four-point suspension, the hacker 1 has two beams 2 on the front and rear sides connected by two right and left connecting bars 3 and has a bowl shape in plan view (in the case of two-point suspension, one beam 2 Is linear). A pair of arms 7 extending vertically downward are fixed to both ends of each beam. Each beam 2 is configured by connecting two expansion members 10 and 20. The telescopic members 10 and 20 have sleeves 12 and 22 and rods 11 and 21 that slide in the longitudinal direction of the beam 2 in the sleeves 12 and 22, respectively. The sleeves 12 and 22 of the adjacent elastic members 10 and 20 are fixed integrally with each other by the annular member 9.

The rods 11 and 21 are provided with hanging metal fittings 13 and 23 connected to the suspension rope. Further, pushers 5 for holding a suspended load are provided on the side surfaces of the rods 11 and 21. The arm 7 is fixed to the ends of the rods 11 and 21. A claw 4 having a mounting surface 4 a on which a suspended load is mounted is provided at the bottom of the arm 7, and the direction of the claw 4 can be rotated in a horizontal plane by a lever 6 provided at the head of the arm 7. . The two levers 6 of the different beams 2 can be operated in conjunction via the operation tube 8.

FIG. 2 shows the internal configuration of the front expansion / contraction member 10 and the arm 7 shown in FIG. 2A shows the internal structure of the sleeve 12 and the rod 11, and FIG. 2B shows the state where the sleeve 12 and the rod 11 are separated. Hereinafter, the stretchable member 10 will be described on behalf of the stretchable member.

The rod 11 is configured so that the entire elastic member 10 does not bend by being surrounded by the sleeve 12 on the four side surfaces and sliding in the direction A. The rod 11 is a hollow 11a into which a screw shaft 14 having a direction A is inserted. A feed nut 15 is fixed to the opening position of the hollow 11 a of the rod 11. A notch 12 b is provided so that the upper part of the sleeve 12 protrudes the hanger 13 fixed to the rod 11 to the outside of the sleeve 12. The screw shaft 14 is connected to the sleeve 12 via an elastic spring 19 that expands and contracts in the direction A through a spring retainer 16. In the embodiment, both ends of the extension spring 19 are connected between the spring presser 16 and the sleeve 12. The operation end 18 of the screw shaft 14 penetrates the side wall 12a of the sleeve 12 and protrudes outward. The sheath 17 wraps around the expansion spring 19 and maintains the expansion spring 19. When the operation end 18 is rotated, the screw shaft 14 is rotated on the spot, and the relative positional relationship with the sleeve 12 in the direction A does not change. Since the screw shaft 14 is connected to the sleeve 12 by an expansion spring 19, when the expansion spring 19 is compressed, the operation end 18 further protrudes through the side wall 12 a of the sleeve 12 (right side in the drawing). When compression is lost, it returns. The arm 7 has a cylindrical shape, and includes a rotation shaft 7a for connecting the lever 6 and the claw 4 therein.

In FIG. 3, the operation of the hacker 1 of the present embodiment will be described. Before the staking operation, the interval between the arms 7 is adjusted by the screw shaft 14. It is slightly larger than the width of the suspended load W, and the suspended load W is applied to the mounting surface 4a of the claw 4. The state at this time is a state where the arms 7 are spaced apart from each other. The hacker 1 is suspended from the crane by the suspension rope s, and is placed on the center line of the suspended load W. The nail | claw 4 is arrange | positioned under a suspended load. At this time, if the claws 4 are directed toward each other by using the lever 6, the claws 4 do not get in the way in the process of lowering the hacker 1 by the crane.

The nail | claw 4 is arrange | positioned under the suspended load W, and lifting is started. The telescopic spring 19 is compressed by the load of the suspended load W, the interval between the arms 7 is narrowed, and the claw 4 further enters under the suspended load W. If the width of the suspended load W and the length of the extension spring 19 are adjusted, the arm 7 comes into contact with the side wall Ws of the suspended load W from the left and right directions, and is mechanically supported and stabilized. Further, if the pusher 5 is set so as to hold the suspended load W from above, the suspended load W is further stabilized. In this state, the crane is operated to move the suspended load W.

On the other hand, when unloading the suspended load W, when the suspended load W reaches the ground, the suspended load is released. Therefore, the expansion members 10 and 20 are expanded by the restoring force of the expansion spring 19 that has been compressed. Thereby, the space | interval of the arm 7 spreads. Thereafter, the hacker 1 is moved by changing the angle of the claw 4 by the lever 6.

According to the hacker 1 of the present embodiment, the arms 7 are vertically installed at both ends of the horizontally suspended beam 2, and the claws 4 for mounting the suspended load W are provided on the arms 7. The contact angle between the claw 4 and the suspended load W can be made constant with respect to the thickness and width of the suspended load W. Further, since the beam 2 can be expanded and contracted at least in the direction (a), the distance between the claws 4 can be adjusted, which corresponds to the diversity of the plate width of the suspended load W. The screw shaft 14 and the sleeve 12 are connected by an expansion / contraction spring 19 that expands / contracts in the direction A, and the expansion / contraction spring 19 is compressed when the hacker 1 is suspended by the suspension cord s to narrow the interval between the arms 7. Can do. Since the beam 2 is constituted by the two adjacent elastic members 10 and 20, the overlapping area of the sleeves 12 and 22 and the rods 11 and 21 can be increased, and the bending can be reduced.

In the above-described embodiment, a four-point suspension in which two beams 2 are coupled by the connecting bar 3 is shown. However, a short-tube suspension can be configured as a two-point suspension hacker with only one beam 2. Moreover, in the said Example, although the arm 7 was attached to the rods 11 and 21 side, you may attach the arm 7 to the sleeves 12 and 22 side. In the above embodiment, the expansion spring 19 is provided between the screw shaft 14 and the sleeve 12, but is provided between the screw shaft 14 and the rod 11 (specifically, between the feed nut 15 and the rod 11). May be. Further, in order to increase the overlapping area of the sleeve 12 and the rod 11 to reduce the bending, the beam 2 is constituted by the two adjacent elastic members 10 and 20, but the rod / sleeve / rod or the sleeve / rod. / These may be arranged in series in the order of the sleeve.

DESCRIPTION OF SYMBOLS 1 Hacker 2 Beam 3 Connection bar 4 Claw 4a Mounting surface 5 Pusher 6 Lever 7 Arm 7a Rotating shaft 8 Operation tube 9 Annular member 10, 20 Extendable member 11, 21 Rod 12, 22 Sleeve 13, 23 Hanging bracket 14 Screw shaft 15 Feed Nut 17 Sheath 18 Operating end 19 Telescopic spring

Claims (3)

There are left and right rods consisting of a first rod that slides in the first sleeve and can advance and retract to the left, and a second rod that slides in the second sleeve and can advance and retract to the right. And a beam that can be expanded and contracted to the left and right by sliding the left and right rods, and a beam provided with a suspension fitting to which a suspension cable is connected to each of the left and right rods;
An arm extending downward from each of the rods, the arm provided with a claw for carrying a suspended load,
The hacker according to claim 1, wherein the left and right rods are connected to the sleeve via an elastic spring that expands and contracts in a length direction of the beam.
The hacker of claim 1,
The rod is hollow, and is inserted into the rod, and has a screw shaft having an operation end penetrating the sleeve, and a feed fixed to the rod at a hollow opening position into which the screw shaft is inserted. A hacker comprising a nut and a spring retainer provided on the screw shaft, wherein the extension spring connects between the spring retainer and the sleeve .
The hacker according to claim 1 or 2, wherein the beam is provided at the front and back, and a connection bar is provided between the beams .