CN219384452U - Tongs for lifting concrete precast slab - Google Patents

Abstract

The utility model discloses a gripper for lifting a concrete precast slab, which comprises a lifting clamp, wherein the lifting clamp comprises a circular shaft, a steel cable and a pull block, the bottom of the lifting clamp is provided with a double-shaft motor, two output ends of the double-shaft motor are respectively provided with a ball screw, the outside of the ball screw is sleeved with a rack, the top of the rotating rod is provided with a second hydraulic cylinder, two sides of the first hydraulic cylinder are provided with support rods, the support rods are provided with rotating shafts, the bottom of the rotating rod is provided with a strip gripper, the gripper for lifting the concrete precast slab can be realized, the gripper cannot move or deviate due to external force, the rotating rod is used for driving a loop bar, the circular shaft and the steel cable are arranged to ensure that the stress around the device is uniform during lifting, the pull block can be used for hooking by a hook lock, the step of dismounting and the rope can pass through the top of the pull block so as to reduce the shaking of the rope.

Description

Tongs for lifting concrete precast slab

Technical Field

The utility model relates to the technical field of precast slab loading, in particular to a grip for hoisting a concrete precast slab.

Background

The precast concrete slab is a floor slab used in early building, and is a module or a plate used in engineering. Because the prefabricated concrete member is produced and processed in the prefabricated field, the prefabricated concrete member is directly transported to a construction site for installation, and the prefabricated concrete member is loaded by a crane in cooperation with a gripper before transportation.

In the prior art, two methods exist, one is to bind with ropes without adopting a gripper, the existing individual is assisted and dangerous, the other is to adopt the gripper and a hook lock, the hook lock is not suitable for hoisting a concrete precast slab, damage can be caused to the precast slab, the gripper needs to be disassembled and replaced for assistance, the conventional gripper needs to be manually adjusted in size to carry out corresponding grabbing, for example, the existing concrete slab loader on the market has the gripper which cannot be used for hoisting concrete precast slabs with different sizes, manual assistance is needed for stabilization, the efficiency is low, shaking conditions can occur when the concrete slab is required to be hoisted too high, and the stability is poor.

Disclosure of Invention

The utility model mainly aims to provide a grip for lifting a concrete precast slab, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a concrete precast slab lifts by crane and uses tongs, includes the hoist and mount clamp, the hoist and mount clamp includes circle axle, cable wire and pull block, the bottom of hoist and mount clamp is provided with biax motor, two output of biax motor all are provided with ball screw, the outside of ball screw has cup jointed the frame;

the bottom of frame is provided with first pneumatic cylinder, the outside of first pneumatic cylinder has cup jointed the slip collar, the both sides of slip collar all are provided with the loop bar, the outside of loop bar is provided with the dwang, the top of dwang is provided with the second pneumatic cylinder, the both sides of first pneumatic cylinder are provided with the bracing piece, the bracing piece is provided with the pivot, the bottom of dwang is provided with the bar tongs, the bottom of first pneumatic cylinder is provided with square pressing plate.

Further, stabilizer bars are arranged on two sides of the bottom of the lifting clamp, a plurality of stabilizer bars are arranged, the rotating rods are sleeved with the rotating shafts, four round shafts and four steel cables are arranged, the steel cables are connected with the round shafts in a clamping mode, the other ends of the steel cables are connected with the bottoms of the pull blocks in a clamping mode, and the pull blocks are placed at the top of the lifting clamp.

Further, the frame, the first hydraulic cylinder, the sliding ring, the second hydraulic cylinder and the square pressing plate are arranged in two, and the frame and the ball screw are sleeved with the stabilizer bar.

Further, the loop bar, the rotating bar, the supporting bar, the rotating shaft and the bar-shaped gripper are all provided with four, and are symmetrical about the central axis of the hoisting clamp.

Further, the bottom of first pneumatic cylinder is provided with circular boss, the loop bar rotates with the dwang to be connected, sliding ring and loop bar rotate to be connected.

Further, the second hydraulic cylinder is in non-contact with the frame, and a mounting hole is formed in the center of the pull block.

Compared with the prior art, the utility model has the following beneficial effects: this kind of concrete precast slab lifts by crane is with tongs, control square press the board through setting up first pneumatic cylinder, make it push down, when guaranteeing to lift by crane little concrete precast slab, it can not remove or receive external force to appear the skew, set up the dwang of both sides with the apparatus pulling by the second pneumatic cylinder, thereby let the dwang remove, utilize dwang transmission loop bar, thereby let loop bar pulling sliding ring upwards move again, and the dwang rotates through the pivot as the fulcrum, let the bar tongs inwards extrude, thereby firmly snatch from many aspects, need not the manual work and adjust, and according to the size of concrete precast slab, thereby utilize the biax motor to let the frame remove along ball screw, the frame can drive bottom equipment and accord with precast slab's size, conveniently snatch, can reply not unidimensional concrete precast slab, improve firm going on of work through both sides dwang improvement, thereby improve efficiency;

the round shaft and the steel cable are arranged to ensure that the stress around the device is uniform during lifting, the pull block not only can be used for installing the rope, but also can be hooked by using the hook lock, the step of dismounting and installing is reduced, and the rope can pass through the top of the pull block, so that the shaking of the rope is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a grip for lifting a concrete precast slab.

Fig. 2 is a schematic perspective view of a bar grip according to the present utility model.

Fig. 3 is a front view of the present utility model.

In the figure: 1. hanging and clamping; 101. a circular shaft; 102. a wire rope; 103. pulling blocks; 2. a biaxial motor; 3. a ball screw; 4. a frame; 5. a first hydraulic cylinder; 6. a sliding ring; 7. a loop bar; 8. a rotating lever; 9. a second hydraulic cylinder; 10. a support rod; 11. a rotating shaft; 12. a bar grip; 13. a square pressing plate; 14. a stabilizer bar.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-3, a grip for lifting a concrete precast slab comprises a lifting clamp 1, wherein the lifting clamp 1 comprises a circular shaft 101, a steel cable 102 and a pull block 103, a double-shaft motor 2 is arranged at the bottom of the lifting clamp 1, ball screws 3 are arranged at two output ends of the double-shaft motor 2, a rack 4 is sleeved outside the ball screws 3 to form a movable transmission structure, the movable transmission structure is suitable for concrete precast slabs with different sizes, and the rack 4 is used for installing grabbing components;

the bottom of frame 4 is provided with first pneumatic cylinder 5, the outside of first pneumatic cylinder 5 has cup jointed sliding ring 6, the both sides of sliding ring 6 all are provided with loop bar 7, the outside of loop bar 7 is provided with dwang 8, the top of dwang 8 is provided with second pneumatic cylinder 9, the both sides of first pneumatic cylinder 5 are provided with bracing piece 10, bracing piece 10 is provided with pivot 11, the bottom of dwang 8 is provided with bar tongs 12, utilizes second pneumatic cylinder 9 to carry out transmission dwang 8, and dwang 8 can drive sliding ring 6 and loop bar 7, and sliding ring 6 and loop bar 7 carry out stable pulling and spacing effect to dwang 8, and dwang 8 then control bar tongs 12 inwards extrudeed finally to snatch the concrete prefabricated slab, the bottom of first pneumatic cylinder 5 is provided with square pressing plate 13, carries out spacing to the concrete prefabricated slab at first, the follow-up work of snatching of effectual assistance.

The two sides of the bottom of the lifting clamp 1 are provided with stabilizer bars 14, the stabilizer bars 14 are provided with a plurality of stabilizer bars, the rotating rods 8 are sleeved with the rotating shafts 11, the round shafts 101 and the steel cables 102 are all provided with four, so that a plurality of grabbing devices are assembled, the steel cables 102 are clamped with the round shafts 101, the other ends of the steel cables 102 are clamped with the bottoms of the pull blocks 103, the uniform increase of stability of the stress of the devices when the devices are lifted is guaranteed, and the pull blocks 103 are placed at the top of the lifting clamp 1 to adapt to different grabbing devices.

Wherein, frame 4, first pneumatic cylinder 5, sliding ring 6, second pneumatic cylinder 9 and square press board 13 are provided with two, form a plurality of tongs, guarantee the stability of snatching, frame 4 and ball screw 3 are cup jointed and stabilizer bar 14 also are cup jointed to let frame 4 can remove, and receive the support and the firm of stabilizer bar 14 when removing, thereby guarantee equipment stability.

The loop bar 7, the rotating bar 8, the supporting bar 10, the rotating shaft 11 and the bar-shaped gripper 12 are all four, and are symmetrical about the central axis of the lifting clamp 1 to form a plurality of grabbing structures, and the stable frame is formed by mutually limiting the transmission of a plurality of simple structures, and is convenient to assemble and disassemble for transportation.

The bottom of the first hydraulic cylinder 5 is provided with a circular boss to limit the position of the sliding ring 6 and to assist in stabilizing the rotating rod 8, the sleeve rod 7 is rotationally connected with the rotating rod 8, the sliding ring 6 and the sleeve rod 7 are rotationally connected to mutually drive and mutually restrict, when the rotating rod 8 pulls the sleeve rod 7, the sliding ring 6 is driven, supportability is achieved for the rotating rod 8, a stable structure is formed, and damage and distortion of the rotating rod 8 are prevented.

The second hydraulic cylinder 9 is in non-contact with the frame 4, when the second hydraulic cylinder 9 is started, the second hydraulic cylinder is subjected to self acting force and moves upwards, the sliding ring 6 limits the second hydraulic cylinder, collision damage of the second hydraulic cylinder 9 and the frame 4 is prevented, and the center of the pull block 103 is provided with a mounting hole to ensure stability during lifting.

It should be noted that, when the hand grip for lifting a concrete precast slab is used, firstly, the hook lock is connected with the pull block 103, or the ropes are inserted into the mounting holes and then wound to ensure stable installation, at this time, the pull is performed, the four steel ropes 102 are tightened, the equipment is uniformly stressed, even no manual assistance is performed, no severe shaking is generated, at this time, the follow-up work is performed according to the size of the concrete precast slab, the double-shaft motor 2 is started to rotate the ball screw 3, so that the frame 4 is driven to move, the frame 4 drives the bottom equipment thereof to move, the concrete precast slab is adapted, the stabilizing rod 14 ensures the stable supporting effect when the frame 4 moves, the square pressing plate 13 is started to press down, the second hydraulic cylinder 9 is started to enable the rotating rod 8 to move, the rotating rod 8 is driven to the sleeve rod 7, the sliding ring 6 is pulled down by the sleeve rod 7, the stability of the rotating rod 8 is ensured, the rotating rod 8 is prevented from twisting after the rotating rod 8 is grabbed, the rotating rod 11 is rotated, and the hand grip is completed, so that the hand grip 11 is contracted, and the hand grip is lifted.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a concrete prefabricated plate lifts by crane uses tongs which characterized in that includes: the hoisting clamp (1), the hoisting clamp (1) comprises a round shaft (101), a steel cable (102) and a pull block (103), a double-shaft motor (2) is arranged at the bottom of the hoisting clamp (1), ball screws (3) are arranged at two output ends of the double-shaft motor (2), and a rack (4) is sleeved outside the ball screws (3);

the bottom of frame (4) is provided with first pneumatic cylinder (5), sliding ring (6) have been cup jointed to the outside of first pneumatic cylinder (5), the both sides of sliding ring (6) all are provided with loop bar (7), the outside of loop bar (7) is provided with dwang (8), the top of dwang (8) is provided with second pneumatic cylinder (9), the both sides of first pneumatic cylinder (5) are provided with bracing piece (10), bracing piece (10) are provided with pivot (11), the bottom of dwang (8) is provided with bar tongs (12), the bottom of first pneumatic cylinder (5) is provided with square pressing plate (13).

2. The grip for lifting a concrete precast slab according to claim 1, wherein: the lifting clamp is characterized in that stabilizer bars (14) are arranged on two sides of the bottom of the lifting clamp (1), the stabilizer bars (14) are arranged in a plurality, the rotating rods (8) are sleeved with the rotating shafts (11), four round shafts (101) and four steel cables (102) are arranged, the steel cables (102) are connected with the round shafts (101) in a clamping mode, the other ends of the steel cables (102) are connected with the bottoms of the pull blocks (103) in a clamping mode, and the pull blocks (103) are arranged at the top of the lifting clamp (1).

3. The grip for lifting a concrete precast slab according to claim 1, wherein: the device is characterized in that two frames (4), a first hydraulic cylinder (5), a sliding ring (6), a second hydraulic cylinder (9) and square pressing plates (13) are arranged, and the frames (4) and the ball screw (3) are sleeved and the stabilizing rods (14) are sleeved.

4. The grip for lifting a concrete precast slab according to claim 1, wherein: the four sleeve rods (7), the rotating rods (8), the supporting rods (10), the rotating shafts (11) and the strip-shaped grippers (12) are all arranged and are symmetrical relative to the central axis of the lifting clamp (1).

5. The grip for lifting a concrete precast slab according to claim 1, wherein: the bottom of first pneumatic cylinder (5) is provided with circular boss, loop bar (7) are connected with dwang (8) rotation, sliding ring (6) and loop bar (7) rotation are connected.

6. The grip for lifting a concrete precast slab according to claim 1, wherein: the second hydraulic cylinder (9) is in non-contact with the frame (4), and a mounting hole is formed in the center of the pull block (103).