CN213976613U - Prevent I-steel by special lifting device of fish tail - Google Patents

Abstract

The utility model relates to a prevent I-steel by special lifting device of fish tail, including the first jack catch, the second jack catch that the interval set up around, the centre of first jack catch and second jack catch is articulated mutually through the pivot, first jack catch and second jack catch are symmetrical about the pivot, be connected with the limiting plate that the level set up between the top of first jack catch and the top of second jack catch, one end of limiting plate is articulated through the top of round pin axle and second jack catch, the other end of limiting plate has seted up U type draw-in groove, the opening of U type draw-in groove sets up down, the top of first jack catch is through round pin axle and U type draw-in groove joint, the cover is equipped with wire rope on the round pin axle; the first clamping jaw and the second clamping jaw are identical in structure, the bottom of the first clamping jaw is bent to form a hook-shaped clamping portion towards the direction close to the second clamping jaw, an arc-shaped groove is formed in the end portion of the clamping portion, a clamping block is fixed in the arc-shaped groove and is cylindrical, and the clamping block is attached to the flange of the I-shaped steel. The surface of the I-shaped steel can be prevented from being scratched or the I-shaped steel can be prevented from being deformed integrally, and the quality of the I-shaped steel is ensured.

Description

Prevent I-steel by special lifting device of fish tail

Technical Field

The utility model belongs to the technical field of lifting device, especially, relate to a prevent that I-steel from being by special lifting device of fish tail.

Background

The i-beam is a long steel material with an i-shaped cross section, which is mainly divided into a common i-beam, a light i-beam and a wide-flange i-beam, and is widely applied to the fields of various building structures, bridges, machinery, supports and the like because the i-beam has the advantages of strong bending resistance, convenience in processing and mounting and the like. When the I-steel needs to be moved and transported, a special lifting appliance needs to be used for lifting and transporting the I-steel.

Patent CN201420756875.X discloses a lifting appliance for lifting I-steel, the bottom end of the lifting appliance is provided with a hook head matched with the flange shape of the I-steel, and a 'scissors' lifting clamp formed by clamp plates hinged together by a shaft pin, but when the I-steel is lifted or placed back to the ground after the I-steel is lifted, the I-steel inevitably inclines to a certain degree due to uneven stress, relative motion can occur between the I-steel and the hook head, at the moment, the hook head can generate acting force on the flange of the I-steel due to the fact that the hook head is attached to the flange of the I-steel, and the surface of the I-steel is scratched or integrally deformed, and the flange of the I-steel is a working surface, so that the deformation is not beneficial to the work, and the quality of the I-steel is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent that I-steel from being by special lifting device of fish tail for solve the easy fish tail I-steel of the hoist that is used for hoist and mount I-steel among the prior art, seriously influence the technical problem of I-steel quality.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the special lifting appliance comprises a first jaw and a second jaw which are arranged at a front-back interval, wherein the middle of the first jaw is hinged with the middle of the second jaw through a rotating shaft, the first jaw and the second jaw are symmetrically arranged about the rotating shaft, a horizontally arranged limiting plate is connected between the top end of the first jaw and the top end of the second jaw, one end of the limiting plate is hinged with the top end of the second jaw through a pin shaft, the other end of the limiting plate is provided with a U-shaped clamping groove, the opening of the U-shaped clamping groove faces downwards, the top end of the first jaw is clamped with the U-shaped clamping groove through a pin shaft, and a steel wire rope is sleeved on the pin shaft; the first clamping jaw and the second clamping jaw are identical in structure, the bottom of the first clamping jaw is bent to form a hook-shaped clamping portion towards the direction close to the second clamping jaw, an arc-shaped groove is formed in the end portion of the clamping portion, a clamping block is fixed in the arc-shaped groove and is cylindrical, and the clamping block is attached to the flange of the I-shaped steel.

Preferably, first jack catch includes preceding cardboard, the back cardboard that the front and back interval set up, and preceding cardboard passes through fixed plate fixed connection with the back cardboard, and the fixed plate is fixed in one side that first jack catch deviates from the second jack catch, and the centre of preceding cardboard rotates respectively with the centre of back cardboard and connects both ends around the pivot, and the top of preceding cardboard rotates respectively with the top of back cardboard and connects both ends around the round pin axle.

Preferably, one side of the opening of the U-shaped clamping groove is provided with an arc-shaped guide groove.

Preferably, a horizontally arranged wrench is fixed at one end of the limiting plate close to the U-shaped clamping groove.

The utility model has the advantages that: (1) the structure is simple, the installation and the use are convenient, the clamping part and the cylindrical clamping block are arranged, when the I-steel inclines due to uneven stress, the clamping block and the I-steel move relatively, the cylindrical clamping block converts sliding friction between the I-steel and a lifting appliance into rolling friction, under the same working condition, the friction force between the I-steel and the lifting appliance is reduced, the I-steel is prevented from being scratched, an arc-shaped cavity is formed between the clamping part and the lower parts of the first clamping jaw and the second clamping jaw, the arc-shaped cavity can prevent the inner wall of the lower part of the first clamping jaw and the inner wall of the lower part of the second clamping jaw from contacting with the flange of the I-steel when the I-steel and the clamping part move relatively, the flange of the I-steel is prevented from generating acting force, the integral deformation of the I-steel is prevented, and the quality of the I-steel is ensured; (2) set up limiting plate, U type draw-in groove, lock whole hoist, prevent at the hoist and mount in-process, take place relative motion between first jack catch and the second jack catch, guarantee the stationarity of hoist, improve hoist and mount efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the utility model in cooperation with an I-steel;

fig. 3 is an enlarged view of a portion a in fig. 2.

Reference numerals: 1-first jack catch, 2-second jack catch, 3-pivot, 4-limiting plates, 5-round pin axle, 6-U type draw-in groove, 7-wire rope, 8-block portion, 9-arc recess, 10-fixture block, 11-I-steel, 12-arc cavity, 13-preceding cardboard, 14-back cardboard, 15-fixed plate, 16-arc guide way, 17-spanner.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the utility model discloses a first jack catch 1 that the interval set up around, second jack catch 2, the centre of first jack catch 1 is articulated mutually through pivot 3 with the centre of second jack catch 2, first jack catch 1 sets up with second jack catch 2 about pivot 3 symmetry, be connected with the limiting plate 4 that the level set up between the top of first jack catch 1 and the top of second jack catch 2, the one end of limiting plate 4 is articulated through the top of round pin axle 5 with second jack catch 2, U type draw-in groove 6 has been seted up to the other end of limiting plate 4, the opening of U type draw-in groove 6 sets up down, the top of first jack catch 1 is through round pin axle 5 and U type draw-in groove 6 joint, the cover is equipped with wire rope 7 on the round pin axle 5, wire rope 7 is connected with hoisting equipment. The structure of the first clamping jaw 1 is the same as that of the second clamping jaw 2, the bottom of the first clamping jaw 1 is bent to form a hook-shaped clamping part 8 towards the direction close to the second clamping jaw 2, an arc-shaped groove 9 is formed in the end part of the clamping part 8, a clamping block 10 is fixed in the arc-shaped groove 9, the clamping block 10 is cylindrical, and the clamping block 10 is attached to the flange of the I-shaped steel 11. As shown in fig. 3, arc-shaped cavities 12 are formed between the clamping portion 8 and the lower portions of the first jaw 1 and the second jaw 2, the vertical distance between the clamping block 10 and the lower portions of the first jaw 1 and the second jaw 2 is L1, the diameter of each arc-shaped cavity 12 is L2, and L2 is greater than L1, so that when the i-steel 11 and the clamping portion 8 move relatively, the inner wall of the lower portion of the first jaw 1 and the inner wall of the lower portion of the second jaw 2 contact with the flange of the i-steel 11, an acting force on the flange of the i-steel 11 is avoided, the deformation of the whole i-steel 11 is prevented, and the quality of the i-steel 11 is ensured. Since the first jaw 1 and the second jaw 2 have the same structure, the structure of the second jaw 2 will not be described in detail.

Preferably, as shown in fig. 1, the first jaw 1 includes the preceding cardboard 13 that the interval set up around, back cardboard 14, preceding cardboard 13 passes through fixed plate 15 fixed connection with back cardboard 14, fixed plate 15 is fixed in the one side that first jaw 1 deviates from second jaw 2, fixed plate 15 and first jaw 1, the lateral wall of second jaw 2 is mutually perpendicular, the centre of preceding cardboard 13 rotates respectively with the centre of back cardboard 14 and is connected the front and back both ends at pivot 3, the top of preceding cardboard 13 rotates respectively with the top of back cardboard 14 and connects both ends around the round pin axle 5. Reduce the weight of first jack catch 1 and second jack catch 2 self, easy to assemble, dismantle simultaneously, be convenient for in time maintain, change.

Preferably, one side of the opening of the U-shaped clamping groove 6 is provided with an arc-shaped guide groove 16, and the arc-shaped guide groove 16 plays a role in guiding, so that the U-shaped clamping groove 6 is conveniently clamped with the pin shaft 5.

Preferably, a horizontally arranged wrench 17 is fixed at one end of the limiting plate 4 close to the U-shaped clamping groove 6. The limiting plate 4 is convenient to move.

The utility model discloses a theory of operation and working process: during the use, adjust the interval between first jack catch 1 and the second jack catch 2, get into arc cavity 12 with the upper portion of I-steel 11 from the clearance department between two fixture blocks 10 in, as shown in fig. 2, make fixture block 10 and I-steel 11 edge of a wing laminate mutually, then with U type draw-in groove 6 block outside round pin axle 5, lock whole hoist, prevent in the hoist and mount in-process, take place relative motion between first jack catch 1 and the second jack catch 2, guarantee the stationarity of hoist. The utility model discloses simple structure, installation convenient to use can prevent 11 surfaces of I-steel from producing mar or wholly take place to warp, guarantees 11 quality of I-steel.

The above embodiments are for the description of the present invention, not for the limitation of the present invention, and any scheme after simply changing the present invention all belongs to the protection scope of the present invention.

Claims (4)

1. The utility model provides a prevent I-steel by special lifting device of fish tail which characterized in that: the clamping device comprises a first clamping jaw and a second clamping jaw which are arranged at a front-back interval, wherein the middle of the first clamping jaw is hinged with the middle of the second clamping jaw through a rotating shaft, the first clamping jaw and the second clamping jaw are symmetrically arranged around the rotating shaft, a horizontally arranged limiting plate is connected between the top end of the first clamping jaw and the top end of the second clamping jaw, one end of the limiting plate is hinged with the top end of the second clamping jaw through a pin shaft, the other end of the limiting plate is provided with a U-shaped clamping groove, the opening of the U-shaped clamping groove faces downwards, the top end of the first clamping jaw is clamped with the U-shaped clamping groove through a pin shaft, and a steel wire rope is sleeved on the pin shaft; the first clamping jaw and the second clamping jaw are identical in structure, the bottom of the first clamping jaw is bent to form a hook-shaped clamping portion towards the direction close to the second clamping jaw, an arc-shaped groove is formed in the end portion of the clamping portion, a clamping block is fixed in the arc-shaped groove and is cylindrical, and the clamping block is attached to the flange of the I-shaped steel.

2. The special lifting appliance for preventing the I-steel from being scratched according to claim 1, wherein: first jack catch passes through fixed plate fixed connection with back cardboard including preceding cardboard, the back cardboard that the interval set up around, preceding cardboard, and the fixed plate is fixed in one side that first jack catch deviates from the second jack catch, and the centre of preceding cardboard rotates respectively with the centre of back cardboard and connects both ends around the pivot, and the top of preceding cardboard rotates respectively with the top of back cardboard and connects both ends around the round pin axle.

3. The special lifting appliance for preventing the I-steel from being scratched according to claim 2, wherein: one side of the U-shaped clamping groove opening is provided with an arc-shaped guide groove.

4. The special lifting appliance for preventing the I-steel from being scratched according to claim 2, wherein: and a horizontally arranged wrench is fixed at one end of the limiting plate close to the U-shaped clamping groove.

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