CN205527410U - Balanced heavy device of installing and removing by oneself of tower crane - Google Patents

Abstract

The utility model discloses a self-installation and disassembly device for a balance weight of a tower crane, in particular to a device for self-disassembly and assembly of a balance weight on a balance arm without relying on other lifting mechanical energy. The purpose is to provide a stable, reliable and reusable tower crane balance weight self-disassembly device, including hoisting wire rope, tower top steering pulley, hoisting mechanism and hook, and detachable connection on the tower crane balance arm The frame is equipped with a hoisting beam with several pin holes, and a guide pulley is provided on the hoisting beam. One end of the hoisting wire rope is wound on the drum of the hoisting mechanism, and the other end is passed around the top of the tower in turn. Behind the pulley and the pulley in the hook, it is fixed in the pin hole of the hoisting beam through the fixing pin of the rope head. The pin hole on the hoisting beam enables the position of the hook pulley and the rope head of the hoisting wire rope to be adjusted to change the position of the hook; It is a detachable structure, convenient and quick to set up, and realizes repeated use. Using the hoisting wire rope and hoisting mechanism of the tower crane itself to lift the balance weight can save costs and simplify the structure.

Description

Tower crane balance weight self-assembly and disassembly device

technical field

The utility model belongs to the technical field of tower cranes, in particular to a device for disassembling and assembling a balance weight on a balance arm.

Background technique

The installation and disassembly of the balance weight of the tower crane is completed by the truck crane when the tower crane is installed or disassembled to the initial erection height. After the tower crane is raised, when the counterweight needs to be dismantled for special reasons, and the lifting height of the truck crane is not enough, a hoisting frame must be temporarily erected on the balance arm, which is realized by the hoisting mechanism of the tower crane itself. The hoisting frame is usually made of local materials, combined with scaffolding tubes and fasteners. This kind of hoisting bracket obtained on the spot will be discarded after use and cannot be reused, resulting in a waste of manpower and material resources; The stability of the crane is poor, leaving hidden dangers in hoisting.

Utility model content

The purpose of the utility model is to provide a self-disassembling device for the balance weight of a tower crane, which has standard structural dimensions, convenient and quick installation, stable and reliable performance, high safety performance, and can be reused.

In order to achieve the purpose of the above invention, the technical solution adopted by the utility model is: a self-installation and disassembly device for the balance weight of a tower crane, including a hoisting wire rope, a steering pulley at the top of the tower, a hoisting mechanism and a hook, and a detachable connection The frame on the balance arm of the tower crane; the top of the frame is provided with a hoisting beam parallel to the axis of the balance arm; the hoisting beam is provided with a number of pin holes along its length; the hoisting beam is equipped with a guide pulley, and the guide pulley The pulley shaft inserted into the pin hole is positioned in the length direction of the hoisting beam; one end of the hoisting wire rope is wound on the drum of the hoisting mechanism, and the other end is passed around the diverting pulley, the guide pulley and the hook of the tower top in turn. After the inner pulley is fixed in the pin hole on the hoisting beam through the rope head fixing pin.

Preferably, the frame includes four uprights, the upper ends of the adjacent uprights are connected by high-strength bolts through the roof beam and the longitudinal beam, and the lower ends of the adjacent uprights are not connected, forming a detachable frame structure with semi-open limbs; The lower end of the column is equipped with lug plates, and the rear section of the main limb of the tower crane’s balance arm is provided with four lug plate seats corresponding to the positions of the lug plates, and the lug plates and ear plate seats are connected by high-strength bolts

The utility model has the following beneficial effects: several pin holes on the hoisting beam enable the position of the hook pulley and the rope head of the hoisting wire rope to be adjusted, thereby changing the position of the hook so that the hook can be positioned above the balance weight to be hoisted; The frame itself is a bolt-connected detachable structure, which is convenient and quick to assemble; the frame and the balance arm are detachably connected to realize repeated use. The balance weight can be hoisted by using the hoisting wire rope of the tower crane itself, the hoisting mechanism and the turning pulley at the top of the tower, which can save costs and simplify the structure.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the A direction view of Fig. 1;

Fig. 3 is the assembly diagram of the utility model.

detailed description

As shown in Figures 1 to 3, a self-installation and disassembly device for the balance weight of a tower crane includes a hoisting wire rope 12, a tower top steering pulley 11, a hoisting mechanism 13 and a hook 7, and also includes a detachable connection on the tower. The frame on the balance arm of the tower crane; the top of the frame is provided with a hoisting beam 3 parallel to the axis of the balance arm of the tower crane; along the length direction of the hoisting beam 3, several pin holes are arranged; the pin holes of the hoisting beam 3 are equipped with Guide pulley 4, the guide pulley 4 is positioned in the length direction of the hoisting beam 3 through the pulley shaft 5 inserted into the pin hole; one end of the hoisting wire rope 12 is wound on the hoisting mechanism 13, and the other end is threaded successively After the pulley in the tower top turning pulley 11, guide pulley 4 and suspension hook 7, be fixed in the pin hole on the hoisting beam 3 by rope head fixing pin 6 again. The hoisting beam 3 is double-leg channel steel, and its opening distance can accommodate the guide pulley 4; the distance between the adjacent pin holes is equal to the distance between the adjacent counterweights 14, while ensuring that the hoisting wire rope 12 can pass through the hoisting The beam 3 is wound on the hook pulley; the pin holes on the hoisting beam enable the position of the guide pulley and the rope end of the hoisting wire rope 12 to be adjusted, thereby changing the position of the hook 7, and the distance between the adjacent pin holes is equal to The spacing of the lifting lugs on the adjacent balance weight 14 makes the position adjustment of the suspension hook 7 more convenient, and the positioning is more accurate so that the suspension hook can be positioned directly above the lifting lugs on the balance weight 14 to be lifted.

Preferably, the frame includes four uprights 8, the upper ends of the adjacent uprights 8 are connected by high-strength bolts through the top frame beam 1 and the longitudinal beam 2, and the lower ends of the adjacent uprights 8 are not connected, forming a semi-open detachable limb. Frame structure, since both sides of the balance weight 14 rest on the main limb of the balance arm through the pin shaft, the semi-open frame structure of the limbs can avoid positional interference with the pin shaft, so that the frame can be smoothly installed on the main limb of the balance arm; The lower ends of the upright columns 8 are provided with ear plates, and the rear section of the main limb of the tower crane balance arm is provided with four ear plate seats corresponding to the positions of the ear plates, and the ear plates and the ear plate seats are connected by high-strength bolts , The high-strength bolt connection is a detachable connection to realize the reuse of the frame.

Preferably, it also includes a diagonal brace 10 for supporting the frame, and both ends of the diagonal brace 10 are provided with ear plates; the balance arm of the tower crane is provided with an underframe beam 9 with an ear plate seat; An ear plate seat is provided on the top frame beam 1; the ear plates at both ends of the diagonal brace 10 are respectively connected with the ear plate seats on the top frame beam 1 and the bottom frame beam 9 through high-strength bolts. The diagonal brace can improve the stability of the frame, prevent the frame from deforming, and improve the safety performance.

Take the removal of the balance weight 14 at the outermost end of the balance arm as an example to illustrate the use of the device, the steps are as follows:

Step 1, the hoisting wire rope 12 goes around the tower top diverting pulley 11, after the guide pulley 4 and the pulley in the hook 7, insert the rope head into the pin hole at the outermost end of the hoisting beam 3 with the fixing pin 6 to fix the hoisting wire rope 12, And pulley shaft 5 is inserted in the pin hole that is spaced a pin hole with it, and now suspension hook 7 is positioned at middle pin hole just below, just above the hanging lug of balance weight 14.

Step 2: The lifting mechanism 13 releases the lifting wire rope 12, the hook 7 hooks the lifting lug of the balance weight 14, tightens the lifting wire rope 12, lifts the balance weight 14 upwards by about 50 mm, and pulls out the balance weight 14 and the main limb of the balance arm between the assembly pins.

Step 3: The hoisting mechanism 13 releases the hoisting wire rope 12 to lower the hook 7 and put the balance weight 14 on the ground.

Step 4: Move the rope end fixing pin 6 and the pulley shaft 5 into respective adjacent pin holes, lift according to the above steps, and so on until all the balance weights 14 are lifted.

Claims (4)

1. A self-assembled and disassembled device for the balance weight of a tower crane, comprising a hoisting wire rope, a tower top diverting pulley, a hoisting mechanism and a suspension hook, characterized in that: it also includes a frame detachably connected to the balance arm of the tower crane; The top of the frame is provided with a hoisting beam parallel to the axis of the balance arm; the hoisting beam is provided with a number of pin holes along its length; Positioning along the length direction of the beam; one end of the hoisting wire rope is wound on the reel of the hoisting mechanism, and the other end of the hoisting wire rope is passed through the steering pulley, the guide pulley and the pulley in the hook in turn, and then fixed by the rope end. The pin is fixed in the pin hole on the lifting beam. 2. The self-assembled and disassembled device for the balance weight of a tower crane according to claim 1, wherein the frame includes four uprights, and the upper ends of the adjacent uprights are connected by high-strength bolts through the top frame crossbeam and the longitudinal beam. The lower ends of the adjacent columns are not connected to form a semi-open detachable frame structure; the lower ends of the columns are provided with ear plates, and the rear section of the main limb of the balance arm of the tower crane is provided with four ear plates corresponding to the positions of the ear plates. The plate seat, the ear plate and the ear plate seat are connected by high-strength bolts. 3. The self-assembled and disassembled device for the balance weight of a tower crane according to claim 2, characterized in that: it also includes a diagonal brace for supporting the frame, and both ends of the diagonal brace are provided with ear plates; The balance arm of the machine is provided with an underframe beam with an ear plate seat; the top frame beam is provided with an ear plate seat; the ear plates at both ends of the diagonal brace are respectively connected to the top frame beam and the bottom frame beam through high-strength bolts. lug seat connection. 4. The self-assembled and disassembled device for the balance weight of a tower crane according to claim 1, characterized in that: the hoisting beam is a double-leg channel steel, the opening distance of which can accommodate the guide pulley; the distance between the two channel steels can accommodate the guide pulley. Pulley; the distance between the adjacent pin holes is equal to the distance between the lifting lugs on the adjacent balance weights.