CN219546532U - Crane heavy hammer height limiting device - Google Patents

Abstract

The utility model relates to the technical field of crane accessories, and particularly discloses a crane heavy hammer height limiting device which comprises a limiter, a steel wire rope and a heavy hammer; the limiter comprises a machine box and a limit switch deflector rod arranged at the bottom of the machine box, the top of the machine box is connected with a fixed block, and the top of the limit switch deflector rod is provided with a stabilizing piece connected to the machine box and used for stabilizing the position of the machine box when the machine box is arranged at one side of the electric hoist; the heavy hammer comprises two groups of hammer bodies, the bottoms of the hammer bodies are connected with U-shaped protection plates through connecting pieces, the tops of each group of hammer bodies are connected with positioning blocks, through holes for a steel wire rope to pass through are formed in the limit switch deflector rod and the positioning blocks, and the steel wire rope passes through the through holes of the positioning blocks and is connected with the connecting blocks; according to the utility model, the bottom of the hammer body of the heavy hammer is connected with the U-shaped protection plate, so that impact damage between the lifting hook and the heavy hammer is reduced when the lifting hook contacts with the heavy hammer, and meanwhile, the U-shaped protection plate is convenient to detach and replace.

Description

Crane heavy hammer height limiting device

Technical Field

The utility model relates to the technical field of crane accessories, in particular to a crane heavy hammer height limiting device.

Background

In bridge crane use, when promoting the material, in order to avoid the material to promote highly excessive, need set up stop device, in time stop work when making lifting means such as electric block promote the material to certain height, current weight stop device is used for spacing in the hoist more.

For example, in the crown block weight limiting device disclosed in the prior patent publication No. CN213326313U, the crown block weight limiting device comprises a limit switch, a weight balancing weight and a weight steel wire rope, wherein the limit switch is connected with the weight balancing weight through the weight steel wire rope; the counter weight comprises a body, wherein the body is bent by a cylinder to form a structure with an opening; one end of the body is provided with a first connecting part, and the other end is provided with a second connecting part; the first connecting parts and the second connecting parts which are arranged at intervals are connected through locking pieces; the body and the locking piece enclose a limit space; the body of weight balancing weight and the spacing space that the screw rod encloses are spacing, reduce the area of contact between lifting hook wire rope and the weight balancing weight, increase weight of weight balancing weight to lifting hook wire rope.

The device can play a limiting role, the lifting hook contacts with the heavy hammer to drive the heavy hammer to move upwards, and the limiting switch can be triggered to act so as to stop lifting of the lifting hook, but in long-time use, the heavy hammer repeatedly impacts the lifting hook due to large mass, so that the lifting hook is easily damaged, and improvement is needed. Aiming at the problems, a crane weight height limiting device is provided.

Disclosure of Invention

The utility model aims to provide a crane weight height limiting device to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a crane heavy hammer height limiting device comprises a limiter, a steel wire rope and a heavy hammer;

the limiting device comprises a machine box and a limiting switch deflector rod arranged at the bottom of the machine box, the top of the machine box is connected with a fixed block, and the top of the limiting switch deflector rod is provided with a stabilizing piece connected to the machine box and used for stabilizing the position of the machine box when the machine box is arranged at one side of the electric hoist;

the heavy hammer comprises two groups of hammer bodies, the bottoms of the hammer bodies are connected with a U-shaped protection plate through connecting pieces, the tops of each group of hammer bodies are connected with positioning blocks, the limit switch deflector rod and the positioning blocks are provided with through holes for a steel wire rope to pass through, and the steel wire rope passes through the through holes of the positioning blocks and is connected with a connecting block.

In one alternative: the stabilizing piece comprises a mounting plate and an adjusting rod which is connected to the mounting plate through threads, and the mounting plate is fixedly connected with the machine box.

In one alternative: one end of the adjusting rod is connected with the knob, and one end of the adjusting rod, which is far away from the knob, is connected with the semicircular rubber sleeve.

In one alternative: the hammer body is provided with a through groove for a crane steel rope to pass through.

In one alternative: the connecting piece is including connecting two sets of erection columns that are close to hammer block one side at U type guard plate, be equipped with the installation screw on the erection column, U type guard plate bottom is equipped with the recess with the installation screw intercommunication, installation screw threaded connection mounting bolt, hammer block bottom is equipped with the mounting hole that corresponds with mounting bolt.

In one alternative: one group of the hammer bodies is connected with a fixing bolt through threads, and the other group of the hammer bodies is provided with a fixing screw hole corresponding to the fixing bolt.

In one alternative: the adapter block size is greater than the perforation size.

In one alternative: and rubber pads are connected to the bottom and the outer side wall of the U-shaped protection plate.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the bottom of the hammer body of the heavy hammer is connected with the U-shaped protection plate, so that impact damage between the lifting hook and the heavy hammer is reduced when the lifting hook contacts with the heavy hammer, and meanwhile, the U-shaped protection plate is convenient to detach and replace;

according to the utility model, due to the arrangement of the stabilizing piece, when the limiter is arranged on the electric hoist of the crane, the inclination of the bottom of the stabilizer to one side of the bottom of the electric hoist is reduced;

the heavy hammer is divided into two groups of hammer bodies, so that the heavy hammer is conveniently arranged on a steel rope of a crane, and the lifting hook can effectively contact with the heavy hammer when rising.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of a stopper according to the present utility model.

Fig. 3 is a schematic structural view of one side of the stopper in the present utility model.

FIG. 4 is a schematic diagram of the weight according to the present utility model.

Fig. 5 is a schematic diagram of a split structure of a hammer and a U-shaped protection plate in the present utility model.

In the figure: 10. a limiter; 11. a machine box; 12. a fixed block; 13. a limit switch deflector rod; 14. an adjusting rod; 15. a mounting plate; 20. a wire rope; 21. a joint block; 30. a heavy hammer; 31. a hammer body; 32. a through groove; 33. a positioning block; 34. u-shaped protection plates; 35. a mounting column; 36. installing a bolt; 37. and (5) fixing bolts.

Detailed Description

Example 1

Referring to fig. 1-5, in an embodiment of the present utility model, a crane weight height limiting device includes a limiter 10, a wire rope 20 and a weight 30; the limiter 10 can be a heavy component of the existing weight limiter;

the limiter 10 comprises a machine box 11 and a limit switch deflector rod 13 arranged at the bottom of the machine box 11, wherein the top of the machine box 11 is connected with a fixed block 12, the fixed block 12 can be connected with an electric hoist by using a bolt matched with the fixed block 12, and a stabilizing piece connected to the machine box 11 is arranged at the top of the limit switch deflector rod 13 and used for stabilizing the position of the machine box 11 when the machine box 11 is arranged at one side of the electric hoist;

the heavy hammer 30 comprises two groups of hammer bodies 31, the bottoms of the hammer bodies 31 are connected with a U-shaped protection plate 34 through connecting pieces, the top of each group of hammer bodies 31 is connected with a positioning block 33, the limit switch deflector 13 and the positioning blocks 33 are provided with through holes for a steel wire rope 20 to pass through, and the steel wire rope 20 passes through the through holes of the positioning blocks 33 and is connected with the connecting blocks 21;

under the action of gravity of the heavy hammer 30, the heavy hammer 30 pulls the steel wire rope 20 to enable the limit switch deflector rod 13 to be downwards poked, the limit switch is closed, the crane works normally, the heavy hammer 30 ascends, the limit switch deflector rod 13 loses pulling force, the limit switch is reset to be in an open state, the power supply of the limiter 10 is cut off, and the action of an electric hoist in the crane can be stopped.

The stabilizer comprises a mounting plate 15 and an adjusting rod 14 which is in threaded connection with the mounting plate 15, the mounting plate 15 is fixedly connected with the machine box 11, the electric hoist is generally in a cylindrical shape, when the limiter 10 is mounted on one side of the electric hoist, the limiter is pulled by the heavy hammer 30 and is easy to incline towards one side of the bottom of the electric hoist, when the limiter 10 is mounted, the adjusting rod 14 can be rotated, one end of the adjusting rod 14 is enabled to contact with the side wall of the electric hoist, the inclination of the limiter 10 towards one side of the bottom of the electric hoist is limited, and the fixed block 12 is enabled to be stably connected with the electric hoist.

One end of the adjusting rod 14 is connected with a knob, and one end of the adjusting rod 14, which is far away from the knob, is connected with a semicircular rubber sleeve;

the hammer body 31 is provided with a through groove 32 for a crane wire rope to pass through; after the two groups of hammer bodies 31 are in butt joint, the through groove 32 can be used for penetrating a crane steel rope;

the connecting piece comprises two groups of mounting posts 35 connected to one side, close to the hammer body 31, of the U-shaped protection plate 34, mounting screw holes are formed in the mounting posts 35, grooves communicated with the mounting screw holes are formed in the bottom of the U-shaped protection plate 34, mounting bolts 36 are connected with the mounting screw holes in a threaded mode, and mounting holes corresponding to the mounting bolts 36 are formed in the bottom of the hammer body 31.

One group of the hammer bodies 31 is connected with a fixed bolt 37 through threads, and the other group of the hammer bodies 31 is provided with a fixed screw hole corresponding to the fixed bolt 37; after the two sets of hammer bodies 31 wrap the crane steel rope, the two sets of hammer bodies 31 can be connected and fixed by using the fixing bolts 37.

The size of the connecting block 21 is larger than that of the through hole, and the connecting block 21 can limit the position of the end part of the steel wire rope 20 so as to realize the connection of the steel wire rope 20 and the heavy hammer 30.

In this embodiment, the fixing block 12 is connected with the electric hoist by using a bolt matched with the fixing block 12, the limiter 10 is fixed on one side of the electric hoist, after the two sets of hammer bodies 31 are butted, the through groove 32 can be used for passing through a steel rope of a crane, the crane works, when the lifting hook rises, the lifting hook jacks up the heavy hammer 30, the limit switch deflector rod 13 loses the pulling force, the limit switch is reset to be in an open state, the limiter 10 cuts off the power supply, and the action of the electric hoist in the crane can be stopped.

Example 2

In distinction from embodiment 1, rubber pads are connected to the bottom and the outer side wall of the U-shaped protection plate 34;

in this embodiment, the rubber pad is provided to further slow down the impact to the hook.

Claims (8)

1. A crane weight height limiting device comprises a limiter (10), a steel wire rope (20) and a weight (30);

the method is characterized in that: the limiter (10) comprises a machine box (11) and a limit switch deflector rod (13) arranged at the bottom of the machine box (11), wherein the top of the machine box (11) is connected with a fixed block (12), and the top of the limit switch deflector rod (13) is provided with a stabilizing piece connected to the machine box (11) and used for stabilizing the position of the machine box (11) when the machine box (11) is arranged at one side of the electric hoist;

the heavy hammer (30) comprises two groups of hammer bodies (31), the bottoms of the hammer bodies (31) are connected with U-shaped protection plates (34) through connecting pieces, the tops of each group of hammer bodies (31) are connected with positioning blocks (33), the limit switch deflector rod (13) and the positioning blocks (33) are respectively provided with a through hole for a steel wire rope (20) to penetrate through, and the through holes of the steel wire rope (20) penetrating through the positioning blocks (33) are connected with connecting blocks (21).

2. The crane weight height limiting device of claim 1, wherein: the stabilizing piece comprises a mounting plate (15) and an adjusting rod (14) which is connected to the mounting plate (15) in a threaded mode, and the mounting plate (15) is fixedly connected with the machine box (11).

3. The crane weight height limiting device of claim 2, wherein: one end of the adjusting rod (14) is connected with the knob, and one end of the adjusting rod (14) far away from the knob is connected with the semicircular rubber sleeve.

4. The crane weight height limiting device of claim 1, wherein: the hammer body (31) is provided with a through groove (32) for a crane steel rope to pass through.

5. The crane weight height limiting device of claim 1, wherein: the connecting piece comprises two groups of mounting columns (35) connected to one side, close to the hammer body (31), of the U-shaped protection plate (34), mounting screw holes are formed in the mounting columns (35), grooves communicated with the mounting screw holes are formed in the bottom of the U-shaped protection plate (34), mounting bolts (36) are connected with the mounting screw holes in a threaded mode, and mounting holes corresponding to the mounting bolts (36) are formed in the bottom of the hammer body (31).

6. The crane weight height limiting device of claim 1, wherein: one group of the hammer bodies (31) is connected with a fixing bolt (37) through threads, and the other group of the hammer bodies (31) is provided with a fixing screw hole corresponding to the fixing bolt (37).

7. The crane weight height limiting device of claim 1, wherein: the size of the joint block (21) is larger than the size of the perforation.

8. The crane weight height limiting device of claim 1, wherein: rubber pads are connected to the bottom and the outer side wall of the U-shaped protection plate (34).