CN210029788U - Heavy hammer limiting device of hoisting crown block - Google Patents

Abstract

The utility model discloses a hoisting crown block weight limiting device, which comprises a lifting hook, wherein the lifting hook is fixedly connected with a lifting rope through a lifting plate arranged above the lifting hook, the upper end of the lifting rope is wound on the outer side surface of a roller, the lower end of the roller is provided with a hoisting crown block trolley body, one side of the hoisting crown block trolley body is fixedly connected with a steel plate, a heavy weight is arranged above the steel plate, the heavy weight is rotatably connected on the outer side surface of a fixed shaft, the rod part of the heavy weight is fixedly connected with a counterweight plate arranged below the steel plate through a limiting pull wire, the front end of the head part of the heavy weight is provided with a fixed plate, the fixed plate is fixed on the upper surface of the steel plate, one side of the fixed plate is provided with a strong-magnetism-proof proximity switch towards the heavy weight direction, the output end of the strong-magnetism-proof proximity, and the action control is reliable, and the potential safety hazard is effectively eliminated.

Description

Heavy hammer limiting device of hoisting crown block

Technical Field

The utility model relates to a jack-up overhead traveling crane technical field specifically is a jack-up overhead traveling crane weight stop device.

Background

In the aluminum electrolysis workshop, heavy raw materials are often required to be hoisted by a hoisting crane for transportation, and a heavy hammer limiting device is arranged above hoisting equipment in order to control the maximum height of the lifting hook.

The current weight limit switch inner structure is complicated, the limit switch contact is the open contact of spring pressure, because electrolysis factory building temperature is too high, the contact is easily by the oxidation, lead to the frequent action of protection, the node malfunction causes the overhead traveling crane frequently to lose electricity easily, influence electrical equipment life such as converter, cause to rise out of control, the high altitude heavy object falls, accidents such as equipment damage, former weight limit switch is plastic mechanism in addition, if the weight is too light, can not make limit contact switch-on, the weight is too heavy, cause the mechanism to damage easily.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome current defect, provide a jack-up overhead traveling crane weight stop device, increased the spacing reliability of the ascending weight of jack-up overhead traveling crane lifting hook, make this device be difficult to cause the damage, and the action is reliable, the effectual potential safety hazard of having eliminated, problem in can effectively solving the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a jack-up overhead traveling crane weight stop device, includes the lifting hook, the lifting hook is through hanger plate and the lifting rope fixed connection who sets up in its top, the upper end of lifting rope twines the lateral surface at the cylinder, the lower extreme of cylinder is equipped with jack-up overhead traveling crane dolly automobile body, one side fixedly connected with steel sheet of jack-up overhead traveling crane dolly automobile body, and the top of steel sheet is equipped with the weight, the weight rotates the lateral surface of connection at the fixed axle, and the pole portion of weight passes through spacing stay wire and sets up the counterweight plate fixed connection in the steel sheet below, and the head front end of weight is equipped with the fixed plate, and the upper surface at the steel sheet is fixed to the fixed plate, and fixed plate one side is equipped with towards the weight direction and prevents strong magnetism proximity switch, prevent that strong magnetism proximity switch's output is connected with outside overhead.

As an optimized technical scheme of the utility model, pole portion one side fixedly connected with gag lever post of weight.

As an optimized technical scheme of the utility model, the head below of weight is equipped with the limiting plate, the upper surface at the steel sheet is fixed to the limiting plate.

As an optimized technical proposal of the utility model, the model of the strong magnetic proximity switch is SY-G-H40.

Compared with the prior art, the beneficial effects of the utility model are that: this hoisting crane weight stop device is in the tilt state through counter weight plate and spacing stay wire messenger weight when out of work, when the lifting hook hoists the heavy object and rises, when the hanger plate touches the counter weight plate and makes its rise, the weight descends under self action of gravity, in descending to the induction zone of preventing strong magnetic proximity switch, prevent that the connection contact between strong magnetic proximity switch and the outside overhead traveling crane combined floodgate switch opens and makes overhead traveling crane stop work, and then make the lifting hook stop rising, greatly increased the spacing reliability of the ascending weight of hoisting crane lifting hook, and motion control is reliable, the effectual potential safety hazard of having eliminated.

Drawings

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

FIG. 2 is an enlarged view of the weight shown in FIG. 1A when the weight is not actuated;

FIG. 3 is a schematic view of the structure of the action of the weight.

In the figure: 1 lifting hook, 2 hanger plates, 3 lifting ropes, 4 counterweight plates, 5 limiting pull wires, 6 heavy hammers, 7 anti-strong magnetic proximity switches, 8 limiting plates, 9 steel plates, 10 limiting rods, 11 hoisting overhead traveling crane trolley bodies, 12 rollers, 13 fixing shafts, 14 fixing plates and 15 high-temperature-resistant protective housings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a hoisting crown block weight limiting device comprises a lifting hook 1, wherein the lifting hook 1 is fixedly connected with a lifting rope 3 through a lifting plate 3 arranged above the lifting hook 1, the upper end of the lifting rope 3 is wound on the outer side surface of a roller 12, the lower end of the roller 12 is provided with a hoisting crown block trolley body 11, one side of the hoisting crown block trolley body 11 is fixedly connected with a steel plate 9, a weight 6 is arranged above the steel plate 9, the weight 6 is rotatably connected with the outer side surface of a fixed shaft 13, the rod part of the weight 6 is fixedly connected with a balance weight plate 4 arranged below the steel plate 9 through a limiting pull wire 5, one side of the rod part of the weight 6 is fixedly connected with a limiting rod 10, the arrangement of the limiting rod 10 prevents the head part of the weight 6 from excessively inclining towards the left side to influence the sensitivity of the device, a limiting plate 8 is arranged below the head part of the weight 6, the arrangement of the limiting plate 8 ensures that the head, limiting plate 8 is fixed at the upper surface of steel sheet 9, the head front end of weight 6 is equipped with fixed plate 14, fixed plate 14 is fixed at the upper surface of steel sheet 9, fixed plate 14 one side is equipped with towards the weight direction and prevents strong magnetic proximity switch 7, prevent that strong magnetic proximity switch 7's output is connected with outside overhead traveling crane closing switch's input electricity, the model of preventing strong magnetic proximity switch 7 is SY-G-H40, the outside of preventing strong magnetic proximity switch 7 is equipped with high temperature resistant protective housing 15, this hoisting overhead traveling crane weight stop device greatly increased the spacing reliability of hoisting overhead traveling crane lifting hook weight rising, and motion control is reliable, the effectual potential safety hazard of having eliminated.

When in use: when the heavy hammer 6 does not work, the heavy hammer 6 and the steel plate 9 are inclined by 45 degrees under the action of the counterweight plate 4 and the support of the limiting rod 10, meanwhile, the contact point of the strong-magnetic proximity switch 7 and the external overhead crane closing switch is in a closed state, when a heavy object needs to be lifted, the roller 12 rotates and drives the heavy object to ascend through the lifting rope 3 and the lifting hook 1, when the lifting plate 2 touches the counterweight plate 4 to ascend, the heavy hammer 6 descends under the action of self gravity, and when the heavy hammer descends to the induction area of the strong-magnetic proximity switch 7, the connecting contact point between the strong-magnetic proximity switch 7 and the external overhead crane closing switch is opened to stop the overhead crane, so that the lifting hook 1 stops ascending, and the lifting height of the heavy object by the lifting overhead crane is limited.

The utility model increases the reliability of the lifting weight limit of the lifting hook of the crane, so that the device is not easy to damage, and the action is reliable, thereby effectively eliminating the potential safety hazard and improving the use convenience; the high-temperature-resistant protective shell 15 effectively protects the strong-magnetic proximity switch 7 from being interfered by high temperature, and the use convenience is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a hoisting crane weight stop device, includes lifting hook (1), lifting hook (1) is through hanger plate (2) and lifting rope (3) fixed connection who sets up in its top, the upper end of lifting rope (3) twines the lateral surface at cylinder (12), the lower extreme of cylinder (12) is equipped with hoisting crane dolly automobile body (11), one side fixedly connected with steel sheet (9) of hoisting crane dolly automobile body (11), and the top of steel sheet (9) is equipped with weight (6), its characterized in that: the weight (6) is rotatably connected to the outer side face of the fixed shaft (13), the rod portion of the weight (6) is fixedly connected with a counterweight plate (4) arranged below a steel plate (9) through a limiting pull wire (5), a fixing plate (14) is arranged at the front end of the head of the weight (6), the fixing plate (14) is fixed on the upper surface of the steel plate (9), one side of the fixing plate (14) is provided with a strong-magnetism-preventing proximity switch (7) towards the direction of the weight, the output end of the strong-magnetism-preventing proximity switch (7) is electrically connected with the input end of an external overhead crane closing switch, and a high-temperature-resistant protective shell (15) is arranged on the outer side of the strong-.

2. The crane weight limiter as claimed in claim 1, wherein: one side of the rod part of the heavy hammer (6) is fixedly connected with a limiting rod (10).

3. The crane weight limiter as claimed in claim 1, wherein: a limiting plate (8) is arranged below the head of the heavy hammer (6), and the limiting plate (8) is fixed on the upper surface of the steel plate (9).

4. The crane weight limiter as claimed in claim 1, wherein: the type of the strong magnetic proximity prevention switch (7) is SY-G-H40.

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