CN111776935A - Tower crane hook with automatic zoom between two ropes and four ropes - Google Patents

Abstract

The tower crane hook with automatic zoom between two ropes and four ropes is characterized in that: a traveling trolley assembly is installed on the boom, and a horn with a large opening at the lower end and a small opening at the upper end is arranged in the center of the traveling trolley assembly. A lead-rod groove is provided with fixed pulleys at both ends; a traction pulley assembly is set at the lower end of the walking trolley assembly, a traction pulley is set in the center of the traction pulley assembly, and a clutch lever is set at the top of the traction pulley assembly, The top of the clutch rod is provided with a clutch pin, a touch switch is provided at the bottom of the traction pulley assembly, and a transmission on/off state connection line is provided between the touch switch and the clutch pin, The bottom end of the traction pulley assembly is also provided with a convex base; it can realize the automatic zooming between the two ropes and the four ropes between the hoist on the hoist and the hanging rope on the hook, which can meet the requirements of different tonnage objects. At the same time, the lifting time is shortened, and the advantages of improving the working efficiency of the tower crane are realized.

Description

Tower crane hook with automatic zoom between two ropes and four ropes

technical field

The invention relates to the technical upgrading of a tower crane hook of a hoisting equipment, specifically a tower crane hook with automatic zooming between two ropes and four ropes.

Background technique

In the tower crane operation project, the higher the hoisting height, the longer the hoisting process, the slower the hoisting speed, the lower the hoisting height, the shorter the hoisting process, the faster the hoisting speed, and there is an inverse relationship between the hoisting height and the hoisting speed. All because the longer the length of the hoisting rope on the retractable hook of the hoist on the boom, the longer the hoisting process; the shorter the length of the hoisting rope on the retractable hook, the shorter the hoisting process.

At present, the jib and hook of the standard tower crane are completed by retracting and releasing four ropes, and the four ropes can meet the objects between 100 tons and 10 tons. In the actual use process, most of the time is used for hoisting small objects under 10 tons, especially when hoisting a tool, the four-rope hook is also activated. Because the four-rope hook takes a long time to retract the sling, especially the hoisting operation at a height of more than 100 meters, it is a waste of hoisting time. If the hook sling is directly changed to two ropes, it cannot lift heavier objects. Therefore, a tower crane hook with automatic zoom between two ropes and four ropes can be invented to solve the above problems.

SUMMARY OF THE INVENTION

The invention provides a tower crane hook with automatic magnification between two ropes and four ropes, which can realize the automatic magnification between the two ropes and the four ropes between the two ropes and the four ropes between the hoist on the hoist and the hoisting hook. At the same time, the lifting time is shortened and the working efficiency of the tower crane is improved.

The purpose of this invention is to realize by implementing the following technical solutions:

A tower crane hook with automatic zooming between two ropes and four ropes, including a boom, a traveling trolley and a hook, is characterized in that: a traveling trolley assembly is installed on the boom, and the center of the traveling trolley assembly is installed. A trumpet-shaped lead-rod slot with a large opening at the lower end and a small opening at the upper end is provided, and fixed pulleys are arranged at both ends; a traction pulley assembly is arranged at the lower end of the walking trolley assembly, and a traction pulley is arranged in the center of the traction pulley assembly. The top of the traction pulley assembly is provided with a clutch lever, the top of the clutch lever is provided with a clutch latch, and a touch switch is provided at the bottom of the traction pulley assembly, between the touch switch and the clutch latch. A transmission on/off state connecting line is arranged between, and a convex base is also arranged at the bottom end of the traction pulley assembly;

The lower end is a hook assembly, the two ends of the hook assembly are provided with movable pulleys, the upper end of the hook assembly is provided with a concave slot, and the lower end of the hook assembly is provided with a hook .

Description of drawings

1 is a four-rope hoisting view of a hook of the present invention;

Fig. 2 is the automatic retraction view of the hook clutch latch of the present invention;

Fig. 3 is the separation view of the hook clutch lever and the traveling trolley of the present invention;

FIG. 4 is a hoisting view showing that the four ropes of the hook of the present invention are changed to two ropes.

Markings in the figure: 1 is the boom, 2 is the traveling trolley assembly, 3 is the trumpet lead slot, 4 is the fixed pulley on the traveling trolley assembly, 5 is the traction pulley assembly, 6 is the clutch lever on the traction pulley assembly, 7 is the clutch pin at the top of the clutch lever, 8 is the touch switch for controlling the clutch pin, 9 is the connection line for the on/off state of the touch switch transmission, 10 is the traction pulley, 11 is the convex base at the bottom end of the traction pulley assembly, 12 is the For the hook assembly, 13 is a concave slot on the upper end of the hook assembly, 14 is a movable pulley on the hook assembly, and 15 is a hook on the hook assembly.

The advantages of the present invention are: the present invention provides a tower crane hook with automatic magnification between two ropes and four ropes, which can realize the hoist on the boom and the hanging rope on the hook between the two ropes and the four ropes. Automatic zoom, while meeting the requirements of different tonnages, shortens the lifting time, and achieves the advantages of improving the working efficiency of the tower crane.

Detailed ways

Example 1: Tower crane hook with automatic zoom between two ropes and four ropes

It is characterized in that: a traveling trolley assembly 2 is installed on the boom 1, and a trumpet-shaped lead-rod slot 3 with a large opening at the lower end and a small opening on the upper end is arranged in the center of the traveling trolley assembly 2, and fixed at both ends. Pulley 4; a traction pulley assembly 5 is arranged at the lower end of the traveling trolley assembly 2, a traction pulley 10 is arranged in the center of the traction pulley assembly, and a clutch lever 6 is arranged at the top of the traction pulley assembly 5. The clutch lever 6 A clutch pin 7 is provided at the top, a touch switch 8 is provided at the bottom of the traction pulley assembly 5, and a transmission on/off state connection line 9 is provided between the touch switch 8 and the clutch pin 7 , a convex base 11 is also provided at the bottom end of the traction pulley assembly 5;

At its lower end is a hook assembly 12 , a movable pulley 14 is provided at both ends of the hook assembly 12 , a concave slot 13 is provided at the upper end of the hook assembly 12 , at the hook assembly The lower end of 12 is provided with a hook 15 .

Claims (1)

1. Possess two ropes and four automatic tower crane lifting hooks that become doubly between restricting, including jib loading boom, walking dolly and lifting hook, its characterized in that: a travelling trolley component (2) is arranged on a crane boom (1), a horn-shaped guide rod groove (3) with a large opening at the lower end and a small opening at the upper end is arranged in the center of the travelling trolley component (2), and fixed pulleys (4) are arranged at the two ends of the guide rod groove; a traction pulley assembly (5) is arranged at the lower end of the walking trolley assembly (2), a traction pulley (10) is arranged in the center of the traction pulley assembly, a clutch rod (6) is arranged at the top end of the traction pulley assembly (5), a clutch plug pin (7) is arranged at the top end of the clutch rod (6), a touch switch (8) is arranged at the bottom of the traction pulley assembly 5, a transmission on/off state connecting wire (9) is arranged between the touch switch (8) and the clutch plug pin (7), and a convex base (11) is further arranged at the bottom end of the traction pulley assembly (5);

the lower end of the lifting hook component (12) is provided with a lifting hook component (12), two ends of the lifting hook component (12) are provided with movable pulleys (14), the upper end of the lifting hook component (12) is provided with a concave clamping groove (13), and the lower end of the lifting hook component (12) is provided with a hook (15).

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