Concrete precast slab lifting appliance

Abstract

The utility model belongs to the technical field of lifting appliance equipment, and particularly relates to a concrete precast slab lifting appliance which comprises a bottom plate, a mounting block is fixed to the middle of the top side of the bottom plate, an arc-shaped groove is formed in the top of the mounting block, a semicircular block is rotatably mounted in the arc-shaped groove, and a supporting plate is fixed to the top of the semicircular block and located outside the arc-shaped groove. Two sliding grooves are formed in the top of the bottom plate and located on the two sides of the mounting block, sliding blocks are slidably mounted in the sliding grooves in a damping mode, supporting rods are rotatably mounted at the tops of the sliding blocks, the top ends of the supporting rods are rotatably mounted on the bottom wall of the supporting plate, springs are fixed to the two sides of the sliding blocks, and the other ends of the springs are fixed to the inner walls of the sliding grooves; one side of the mounting block is in threaded connection with a limiting bolt, and one end of the limiting bolt extends to the arc-shaped groove and abuts against the outer wall of the semicircular block. The whole lifting appliance can be reasonably stressed, the phenomenon that the steel wire rope is obliquely pulled and hard dragged is avoided, and the use safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sling equipment, and specifically relates to a sling for a concrete prefabricated plate. Background Art

[0002] Precast concrete panels have many uses in construction. They can be used not only for floor slabs of buildings, but also for ditch covers beside roads, thermal insulation layers on roofs, etc. Their advantages are that they can greatly improve construction efficiency, reduce wet operations on site, save on-site labor, and help overcome the impact of seasons on construction, thereby shortening the construction period; during the construction process, precast components need to be centrally stacked and transferred, and cranes are usually used with special hoists to move precast concrete panels.

[0003] When workers place precast concrete panels on the pallet, the currently used hoists are prone to causing the positions of the precast concrete panels to shift, resulting in unstable center of gravity, uneven force on the steel wire ropes at the four corners of the pallet, and oblique pulling and hard pulling, which cannot ensure the safety of transporting the precast concrete panels. Utility Model Content

[0004] The utility model aims to provide a concrete precast sling, which can make the whole sling bear the force reasonably, avoid the phenomenon of oblique pulling and hard pulling of the wire rope, and ensure the safety of use.

[0005] The technical solutions adopted in this utility are as follows:

[0006] The concrete precast slab hanger comprises a base plate, a mounting block is fixed to the middle part of the top side of the base plate, an arc-shaped groove is provided on the top of the mounting block, a semicircular block is rotatably installed inside the arc-shaped groove, a support plate is fixed to the top of the semicircular block and located outside the arc-shaped groove, two slide grooves are provided on the top of the base plate and located on both sides of the mounting block, a slider is slidably installed inside the slide groove, a support rod is rotatably installed on the top of the slider, the top end of the support rod is rotatably installed on the bottom wall of the support plate, springs are fixed on both sides of the slider, and the other end of the spring is fixed to the inner wall of the slide groove.

[0007] Furthermore, a limiting bolt is threadedly screwed onto one side of the mounting block, and one end of the limiting bolt extends into the arc groove and abuts against the outer wall of the semicircular block.

[0008] Furthermore, first hanging rings are fixed on both sides of the support plate.

[0009] Furthermore, a main beam is arranged above the support plate, two steel wire ropes are fixed to both sides of the bottom of the main beam, a hook connected to the first hanging ring is fixed to the other end of the steel wire rope, and a second hanging ring is fixed to the middle of the top end of the main beam.

[0010] The technical effects achieved by this utility model are:

[0011] The practical precast concrete slab hoist has a support plate. When the position of the precast concrete slab placed on the support plate is offset, the center of gravity of the support plate will be unstable and the support plate will be tilted. At this time, the worker can adjust the position of the precast concrete slab to make the center of gravity of the support plate stable, so that the force of the whole hoist is reasonable, and the phenomenon of oblique pulling and hard pulling of the wire rope will not occur, thereby ensuring safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the support plate of the utility model;

[0014] Figure 3 It is a schematic diagram of the partial cutaway structure of the practical support plate.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0016] 1. Base plate; 2. Mounting block; 3. Arc groove; 4. Semicircular block; 5. Support plate; 6. Slide groove; 7. Slider; 8. Spring; 9. Support rod; 10. First hanging ring; 11. Limit bolt; 12. Ball; 13. Pointer; 14. Offset value plate; 15. Main beam; 16. Wire rope; 17. Hook; 18. Second hanging ring. DETAILED DESCRIPTION

[0017] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0018] like Figure 1-3As shown, the concrete precast slab hanger comprises a bottom plate 1, a mounting block 2 is fixed to the middle of the top side of the bottom plate 1, an arc groove 3 is provided on the top of the mounting block 2, a semicircular block 4 is rotatably installed inside the arc groove 3, a support plate 5 is fixed on the top of the semicircular block 4 and located outside the arc groove 3, two slide grooves 6 are provided on the top of the bottom plate 1 and on both sides of the mounting block 2, a slider 7 is rotatably installed inside the slide groove 6, a support rod 9 is rotatably installed on the top of the slider 7, the top end of the support rod 9 is rotatably installed on the bottom wall of the support plate 5, springs 8 are fixed on both sides of the slider 7, and the other end of the spring 8 is fixed The inner wall of the slide groove 6 is fixed. When workers place concrete precast panels on the support plate 5 and the position of the placed concrete precast panels is offset, the support plate 5 on the heavier side will rotate downward. At this time, the workers adjust the position of the concrete precast panels to make the support plate 5 balanced again. When the crane is used for lifting, the whole lifting device can be reasonably stressed, and there will be no oblique pulling or hard pulling, thereby ensuring safe use. The inner wall of the arc groove 3 is provided with a plurality of ball grooves, and a plurality of balls 12 in contact with the semicircular block 4 are arranged inside the ball grooves to reduce the friction between the semicircular block 4 and the ball grooves, so that the rotation of the semicircular block 4 is relatively smooth.

[0019] like Figure 2 As shown, one side of the mounting block 2 is threadedly connected to the limiting bolt 11, and one end of the limiting bolt 11 extends to the arc groove 3 and abuts against the outer wall of the semicircular block 4, so as to limit the rotation of the semicircular block 4 by the limiting bolt 11, prevent the semicircular block 4 and the support plate 5 from rotating, and make it more stable when the support plate 5 is lifted and lowered, avoiding shaking when the support plate 5 contacts the ground;

[0020] like Figure 1 As shown, first hanging rings 10 are fixed on both sides of the support plate 5, which are relatively complete and convenient for detachable connection with the hooks 17, so as to facilitate the installation of prefabricated panels on the support plate 5; a main beam 15 is arranged above the support plate 5, and two steel wire ropes 16 are fixed on both sides of the bottom of the main beam 15, and the other end of the steel wire rope 16 is fixed with a hook 17 connected with the first hanging ring 10, and a second hanging ring 18 is fixed at the middle of the top of the main beam 15, so that the equipment is relatively complete, and it is convenient to lift the support plate 5 through the steel wire rope 16 by an external crane and the upper main beam 15;

[0021] like Figure 1 As shown, a pointer 13 is fixed on one side of the bottom of the pallet 5, and an offset value plate 14 is provided on one side of the base plate 1 corresponding to the pointer 13, so as to facilitate more intuitive observation of the offset of the pallet 5 and timely adjustment of the position of the prefabricated board placed on the pallet 5, which is more practical.

[0022] The working principle of the utility model is as follows: when in use, first loosen the limit bolt 11 to cancel the restriction on the semicircular block 4, then put the bottom plate 1 stably on the ground, and then the worker places the concrete precast panel on the support plate 5. When the position of the placed concrete precast panel is offset, the support plate 5 on the heavier side will be rotated downward. At this time, the worker adjusts the position of the concrete precast panel to make the support plate 5 balanced again. After the placement is completed, tighten the limit bolt 11, and finally lift the concrete precast panel through the crane, so that the whole lifting device is reasonably stressed, and there will be no oblique pulling or hard pulling phenomenon, thereby ensuring safe use.

[0023] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. The concrete precast panel hanger is characterized by: The invention comprises a bottom plate (1), a mounting block (2) is fixed at the middle of the top side of the bottom plate (1), an arc groove (3) is provided at the top of the mounting block (2), a semicircular block (4) is rotatably mounted inside the arc groove (3), a support plate (5) is fixed at the top of the semicircular block (4) and located outside the arc groove (3), two slide grooves (6) are provided at the top of the bottom plate (1) and located on both sides of the mounting block (2), a slider (7) is rotatably mounted inside the slide groove (6), a support rod (9) is rotatably mounted at the top of the slider (7), the top end of the support rod (9) is rotatably mounted on the bottom wall of the support plate (5), springs (8) are fixed on both sides of the slider (7), and the other end of the spring (8) is fixed to the inner wall of the slide groove (6).

2. The precast concrete slab hanger according to claim 1, characterized in that: The inner wall of the arc-shaped groove (3) is provided with a plurality of ball grooves, and a plurality of rolling balls (12) in contact with the semicircular block (4) are arranged inside the ball grooves.

3. The precast concrete slab hanger according to claim 1, characterized in that: A limiting bolt (11) is threadedly screwed onto one side of the mounting block (2), and one end of the limiting bolt (11) extends to the arc-shaped groove (3) and abuts against the outer wall of the semicircular block (4).

4. The precast concrete slab hanger according to claim 1, characterized in that: First hanging rings (10) are fixed on both sides of the support plate (5).

5. The precast concrete slab hanger according to claim 1, characterized in that: A main beam (15) is arranged above the support plate (5), two steel wire ropes (16) are fixed on both sides of the bottom of the main beam (15), a hook (17) connected to the first hanging ring (10) is fixed at the other end of the steel wire rope (16), and a second hanging ring (18) is fixed at the middle of the top end of the main beam (15).

6. The precast concrete slab hanger according to claim 1, characterized in that: A pointer (13) is fixed to one side of the bottom of the support plate (5), and an offset value plate (14) is provided on one side of the base plate (1) corresponding to the pointer (13).

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