CN107188025A - A kind of Steel bar hanger for crane and its application method - Google Patents

Abstract

The invention relates to the field of hoisting machinery, in particular to a steel bar spreader for a crane and a using method thereof. Including the hanging beam, the lower end of the hanging beam is evenly arranged with a plurality of vertical rods, and the right side of the vertical rods is equipped with a rotating rod. A counterweight is arranged on the top, a limit device matched with the vertical rod is arranged on the rotating rod, and an unloading device for releasing the limit device is arranged inside the vertical rod. The invention has the advantages of simple structure and convenient operation. The steel bar spreader for cranes of the invention is accurate and fast in hoisting steel bars, has high hoisting efficiency, does not need manual clamping, and is safe to use.

Description

A kind of steel bar spreader for crane and using method thereof

technical field

The invention relates to the field of hoisting machinery, in particular to a steel bar spreader for a crane and a using method thereof.

Background technique

Currently, the steel bars need to be hoisted by a crane during the fabrication of the pipe piles. When the steel bar is hoisted, it is generally placed under the crane beam for hoisting and positioning by the operator after being tightened with slings such as steel wire ropes. Like this, not only worker's labor intensity is big, also unsafe, and steel bar is unloaded and puts in place also slower, and efficiency is greatly reduced. Therefore, in order to solve the above-mentioned technical problems, it is indeed necessary to provide a steel bar spreader for cranes with a novel structure, so as to overcome the above-mentioned defects in the prior art.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a fast and accurate positioning, safe and efficient steel bar spreader for cranes and a method of use thereof.

In order to achieve the above object, the technical solution provided by the invention is:

A steel bar spreader for a crane, comprising a hanging beam, a plurality of vertical rods are evenly distributed on the lower end surface of the hanging beam, and a rotating rod is arranged on the right side of the vertical rods, the rotating rods and the vertical rods are connected by pin shafts, and the rotation at the rear of the vertical rods The rods are connected by connecting rods, the connecting rods are provided with counterweights, the rotating rods are provided with a limit device that cooperates with the vertical rod, and the inside of the vertical rod is provided with an unloading device that releases the limit device.

Specifically, the limiting device includes a third slot on the rotating rod whose axial center line is parallel to the suspension beam, a second push rod is arranged in the third slot, and the right end surface of the second push rod is aligned with the third A second spring is arranged between the bottoms of the slots, one end of the second spring is fixedly connected with the bottom of the third slot, and the other end of the second spring is fixedly connected with the right end surface of the second push rod.

Specifically, the unloading device includes a first slot arranged inside the vertical rod and the axial center line is parallel to the vertical rod. A push rod is arranged in the first slot, and a first gear ring is arranged on the upper part of the push rod. The bottom of the slot hole is provided with a first hole shelf, and the inner edge of the first hole shelf is provided with a square groove that matches the bar on the push rod, and the push rod between the first hole shelf and the first stop ring is provided with a The first spring, the upper end of the first spring is fixedly connected with the first gear ring, the lower end of the first spring is fixedly connected with the first hole gear, and the right part of the vertical rod is provided with a device that communicates with the first slot and the axial centerline is in line with the first hole. The axial center line of the first slot is vertical to the second slot, the left side of the hole wall of the second slot is provided with a second hole stopper, the second slot is provided with a first push rod, and the right end of the first push rod is provided There is a third gear ring, the left outer edge of the first push rod is provided with a second gear ring, the outer diameters of the third gear ring and the second gear ring are equal, and the outer diameter of the third gear ring is larger than that of the second hole gear Inner diameter, the axial centerline of the second slot hole is on the track where the axial centerline of the second push rod rotates around the pin shaft, and the diameter of the second slot hole is larger than the outer diameter of the second push rod.

Specifically, a base is provided at the lower end of the push rod.

Specifically, the rotating rod behind the vertical rod is provided with a gear rod.

Specifically, the upper end of the push rod is provided with a slope facing the second slot.

Specifically, the left end surface of the first push rod is an arc surface.

Compared with prior art, the beneficial effect of the present invention is:

The invention has the advantages of simple structure and convenient operation. The steel bar spreader for cranes of the invention is accurate and fast in hoisting steel bars, has high hoisting efficiency, does not need manual clamping, and is safe to use.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is an enlarged view of area A in FIG. 1 .

FIG. 3 is an enlarged view of area B in FIG. 2 .

Figure 4 is a side view of the present invention.

FIG. 5 is an enlarged view of area C in FIG. 4 .

Fig. 6 is a top view of the first hole stop.

The names of the parts in the accompanying drawings are:

1. Vertical rod, 2. Rotating rod, 3. Pin shaft, 4. Gear lever, 5. First slot hole, 6. Second slot hole, 7. First push rod, 8. Ejector rod, 9. First Gear ring, 10, connecting rod, 11, counterweight, 12, first hole gear, 13, first spring, 14, base, 15, second gear ring, 16, second push rod, 17, second groove Hole, 18, the second spring, 19, hanging beam, 20, the third gear ring, 21, gear bar, 22, square groove, 23, the second hole gear.

detailed description

As shown in Figures 1-6, a steel bar spreader for a crane includes a suspension beam 19, a plurality of vertical rods 1 are evenly distributed on the lower end surface of the suspension beam 19, and a rotating rod 2 is arranged on the right side of the vertical rod 1. 2 is connected with the vertical pole 1 through the pin shaft 3, and the rotating rod 2 behind the vertical rod 1 is connected through the connecting rod 10. device, the inside of the pole 1 is provided with an unloading device for releasing the limit device.

The limiting device includes a third slot 17 that is arranged on the rotating rod 2 and whose axial center line is parallel to the suspension beam 19. A second push rod 16 is arranged in the third slot 17, and the right end of the second push rod 16 A second spring 18 is arranged between the surface and the bottom of the third slot 17, one end of the second spring 18 is fixedly connected with the bottom of the third slot 17, and the other end of the second spring 18 is connected to the bottom of the second push rod 16. The right end face is fixedly connected.

The unloading device includes a first slot 5 arranged inside the vertical rod 1 and the axial center line is parallel to the vertical rod 1, a push rod 8 is arranged in the first slot 5, and a first stop ring is arranged on the upper part of the push rod 8 9. The bottom of the first slot 5 is provided with a first hole stopper 12, and the inner edge of the first hole stopper 12 is provided with a square groove 22 that cooperates with the bar 21 on the ejector rod 8. The first hole stopper 12 and the second The push rod 8 between the first gear rings 9 is provided with a first spring 13, the upper end of the first spring 13 is fixedly connected with 9 first gear rings, the lower end of the first spring 13 is fixedly connected with the first hole gear 12, and the vertical The right part of the rod 1 is provided with a second slot 6 which communicates with the first slot 5 and whose axial centerline is perpendicular to the axial centerline of the first slot 5. The left side of the second slot 6 is provided with a The second hole gear 23, the second slotted hole 6 is provided with a first push rod 7, the right end of the first push rod 7 is provided with a third gear ring 20, and the left outer edge of the first push rod 7 is provided with a second gear ring 15. The outer diameters of the third gear ring 20 and the second gear ring 15 are equal, and the outer diameter of the third gear ring 20 is larger than the inner diameter of the second hole gear 23, and the axial centerline of the second slot hole 6 is in the second push The axial centerline of the rod 16 is on the track of rotation around the pin shaft 3 , and the diameter of the second slot 6 is larger than the outer diameter of the second push rod 16 .

The lower end of the push rod 8 is provided with a base 14 .

A gear rod 4 is arranged on the rotating rod 2 at the rear of the vertical rod 1 .

The upper end of the push rod 8 is provided with a slope facing the second slot 6 .

The left end surface of the first push rod 7 is an arc surface.

During use, the second push rod 16 in the third slot 17 is stretched into the second slot 6 by the elastic force of the second spring 18. At this moment, one end of the rotating rod 2 in the front of the vertical rod 1 is inclined to the direction of the suspension beam 19, and the hoisting , lower the suspension beam 19 so that the base 14 of the push rod 8 keeps a certain distance from the ground, place the steel bar that needs to be moved on the inclined rotating rod 2, and then lift it up. A plurality of vertical rods 1 and rotating rods 2 can be Prevent the steel bar from bending and deforming due to its own gravity when it is hoisted.

When the steel bar is hoisted to the designated position, the hanging beam 19 is lowered, and when the base 14 at the lower end of the push rod 8 contacts the ground, the gravity of the hanger and the steel bar itself will squeeze the push rod 8, and the push rod 8 is in the first slot. 5 rises, and now the first spring 13 is in a stretched state. After the inclined surface on the upper end of the push rod 8 contacts the first push rod 7 and pushes the first push rod 7 to move toward the third slot 17, the first push rod 7 Promote the second push rod 16 to move toward the bottom of the third slot 17, and the second push rod 16 squeezes the second spring 18. After the second push rod 16 is separated from the second slot 6, due to the gravity of the steel bar, The rotating rod 2 in front of the vertical rod 1 will rotate downwards, until the gear lever 4 on the rotating rod 2 contacts with the vertical rod 1, at this moment the steel bar on the rotating rod 2 will slide down on the ground.

After the steel bar is unloaded, the lifting beam 19 is lifted, and after the base 14 is separated from the ground, the first spring 13 makes the push rod 8 move downward. gravity, the part of the rotating rod 2 in front of the vertical rod 1 will rotate upwards around the pin shaft 3 until the second spring 18 pushes the second push rod 16 into the second slot 6, and the second push rod 16 enters the second After the slot 6, the first push rod 7 in the second slot 6 will be pushed to move towards the first slot 5. At this time, the rotating rod 2 returns to the state before the lifting, to prepare for the next lifting, and the rotating rod 2 In the process of rotation, it is always in contact with the right end face of the pole 1.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (8)

1. A steel bar spreader for a crane, comprising a suspension beam (19), a plurality of vertical rods (1) are evenly distributed on the lower end surface of the suspension beam (19), it is characterized in that the right side of the vertical rod (1) is equipped with The rotating rod (2), the rotating rod (2) is connected with the vertical rod (1) through a pin shaft (3), the rotating rod (2) at the rear of the vertical rod (1) is connected through a connecting rod (10), and the connecting rod (10) A counterweight (11) is arranged on the top, a limit device cooperating with the vertical rod (1) is arranged on the rotating rod (2), and an unloading device for releasing the limit device is arranged inside the vertical rod (1). 2. A steel bar spreader for a crane according to claim 1, characterized in that, the limiting device comprises a third groove arranged on the rotating rod (2) and whose axial centerline is parallel to the suspension beam (19) hole (17), a second push rod (16) is arranged in the third slot hole (17), and a second Spring (18), second spring (18) one end is fixedly connected with the hole bottom of the 3rd slotted hole (17), and the other end of second spring (18) is fixedly connected with the right end face of the second push rod (16). 3. A steel bar spreader for a crane according to claim 1, wherein the unloading device comprises a first slot arranged inside the vertical rod (1) and the axial center line is parallel to the vertical rod (1) (5), the first slot (5) is provided with a push rod (8), the upper part of the push rod (8) is provided with a first gear ring (9), and the bottom of the first slot (5) is provided with a first hole Gear (12), the inner edge of the first hole gear (12) is provided with a square groove (22) that matches the gear (21) on the push rod (8), the first hole gear (12) and the first gear The push rod (8) between the rings (9) is provided with a first spring (13), the upper end of the first spring (13) is fixedly connected with the first gear ring (9), and the lower end of the first spring (13) It is fixedly connected with the first hole stopper (12), and the right part of the upright rod (1) is provided with a hole that communicates with the first slot hole (5) and whose axial centerline is perpendicular to the axial centerline of the first slot hole (5). The second slotted hole (6), the second hole stopper (23) is arranged on the left side of the hole wall of the second slotted hole (6), and the first push rod (7) is arranged in the second slotted hole (6). The right end of the push rod (7) is provided with a third gear ring (20), and the left outer edge of the first push rod (7) is provided with a second gear ring (15), a third gear ring (20) and a second gear ring The outer diameters of (15) are equal, and the outer diameter of the third gear ring (20) is greater than the inner diameter of the second hole gear (23), and the axial centerline of the second slotted hole (6) is at the second push rod (16) The axial centerline of the shaft rotates around the pin shaft (3), and the diameter of the second slot hole (6) is greater than the outer diameter of the second push rod (16). 4. A steel bar spreader for a crane according to claim 3, characterized in that a base (14) is provided at the lower end of the push rod (8). 5 . A steel bar spreader for a crane according to claim 1 , characterized in that, a gear lever ( 4 ) is arranged on the rotating rod ( 2 ) behind the vertical rod ( 1 ). 6. A steel bar spreader for a crane according to claim 3, characterized in that, the upper end of the push rod (8) is provided with a slope facing the second slot hole (6). 7. A steel bar spreader for a crane according to claim 3, characterized in that, the left end surface of the first push rod (7) is an arc surface. 8. A method of using a steel bar spreader for a crane, characterized in that, when in use, the second push rod (16) in the third slot (17) is stretched into the second slot by the elastic force of the second spring (18) In the hole (6), at this time, one end of the rotating rod (2) in front of the vertical rod (1) is inclined to the direction of the hanging beam (19). When hoisting, lower the hanging beam (19) so that the base (14 ) keep a certain distance from the ground, place the steel bar to be moved on the inclined rotating rod (2), and then lift it up. Multiple vertical rods (1) and rotating rods (2) are provided to prevent the steel bar from being Bending and deforming due to its own gravity, When the reinforcing bar is hoisted to the designated position, lower the suspension beam (19), when the base (14) at the lower end of the push rod (8) is in contact with the ground, the gravity of the hanger and the reinforcing bar itself will extrude the push rod (8), The ejector rod (8) rises in the first slot hole (5), and the first spring (13) is stretched at this time, and the inclined surface at the upper end of the ejector rod (8) contacts the first push rod (7) and pushes the first push rod (7). A push rod (7) moves toward the third slot hole (17), the first push rod (7) pushes the second push rod (16) to move toward the bottom of the third slot hole (17), and the second push rod The rod (16) extrudes the second spring (18), and when the second push rod (16) is separated from the second slot (6) due to the gravity of the steel bar, the rotating rod (2) in front of the vertical rod (1) will Rotate downward until the gear lever (4) on the rotating rod (2) contacts the vertical rod (1), at this moment the steel bar on the rotating rod (2) will slide down to the ground, After the steel bar is unloaded, the lifting beam (19) is lifted, and after the base (14) is separated from the ground, the first spring (13) makes the push rod (8) move downward, because the rear of the vertical rod (1) is connected with the rotating rod (2) The gravity of the connecting rod (10) and the counterweight (11) on it, the rotating rod (2) part in front of the vertical rod (1) will rotate upward around the pin shaft (3) until the second spring (18 ) to push the second push rod (16) into the second slot (6), and after the second push rod (16) enters the second slot (6), it will push the first The push rod (7) moves towards the direction of the first slot hole (5). At this time, the rotating rod (2) returns to the state before lifting to prepare for the next lifting. The rotating rod (2) is always in contact with the vertical The right end face of the rod (1) is in contact.