CN216272801U

CN216272801U - Quick lifting device of swing arm tower crane

Info

Publication number: CN216272801U
Application number: CN202122950927.XU
Authority: CN
Inventors: 崔晓林; 高轶
Original assignee: Tianjin Tianan New Energy Technology Co ltd
Current assignee: Tianjin Tianan New Energy Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-12
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to a quick lifting device of a swing arm tower crane, which comprises two winches, an arm head pulley block and a hook pulley block, wherein the two winches are arranged on a balance arm of the swing arm tower crane in a front-back mode, the arm head pulley block is arranged at the end part of a suspension arm on the swing arm tower crane, the arm head pulley block comprises a fixed shaft and a fixed pulley, and the fixed shaft is fixed at the end part of the suspension arm. The utility model adopts the form arrangement of double winches, and the front and rear winches achieve the synchronism of lifting action through synchronous control; the rope winding mode is changed into a double-rope winding mode to connect the lifting hooks, and under the condition of the same lifting capacity, the lifting speed is obviously increased, so that the lifting efficiency is improved, and the working efficiency is improved.

Description

Quick lifting device of swing arm tower crane

Technical Field

The utility model relates to the technical field of swing arm tower cranes, in particular to a quick lifting device of a swing arm tower crane.

Background

The swing arm tower crane is a crane with a swing arm frame capable of swinging, and the swing arm tower crane changes the swing arm frame by adjusting the inclination angle of the swing arm frame. The swing arm tower crane is suitable for the building industry, the electric power industry and the petrochemical industry by virtue of the characteristics of large lifting capacity and large lifting height. Compared with a large crawler crane or an all-terrain crane, the movable arm tower crane has the advantages of being more convenient and fast in hoisting operation and small in supporting surface. However, the conventional luffing jib tower crane consumes a long time when lifting heavy objects, and has low working efficiency.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the technical drawbacks mentioned.

Therefore, an object of the present invention is to provide a quick lifting device for a tower crane with a luffing jib, so as to solve the problems mentioned in the background art and overcome the disadvantages in the prior art.

In order to achieve the purpose, the utility model provides a quick lifting device of a movable arm tower crane, which comprises two winches, an arm head pulley block and a hook pulley block, wherein the two winches are arranged on a balance arm of the movable arm tower crane in a front-back mode, the arm head pulley block is arranged at the end part of a suspension arm on the movable arm tower crane, the arm head pulley block comprises a fixed shaft and a fixed pulley, the fixed shaft is fixed at the end part of the suspension arm, the fixed shaft is rotatably connected with a plurality of fixed pulleys which are arranged at equal intervals along the axis of the fixed shaft, the hook pulley block comprises a bracket, a movable shaft and a movable pulley, the movable shaft is fixed on the bracket, the movable shaft is rotatably connected with a plurality of movable pulleys which are arranged at equal intervals along the axis, the center part of the bottom of the bracket is connected with a hook, and steel wire ropes on the two winches are respectively wound on the plurality of fixed pulleys in the arm head pulley block and the plurality of movable pulleys in the hook pulley block, the lifting hook is driven to move up and down by winding the steel wire ropes, and the parts of the bracket corresponding to the two steel wire ropes are respectively provided with an inclination angle sensor.

Preferably, in any of the above embodiments, the two tilt sensors are symmetrically arranged about a center of the movement axis.

Preferably, in any one of the above schemes, the boom is further provided with a transition shaft, the transition shaft is rotatably connected with two guide pulleys, and a steel wire rope on the winch is wound on the guide pulleys and then is wound on the fixed pulleys in the arm head pulley block.

Preferably, in any one of the above schemes, one end of each of the steel wire ropes of the two winches is fixed to the two ends of the fixed shaft.

Preferably, the fixed pulleys and the movable pulleys wound by the steel wire ropes on the two winches are the same in number.

Preferably by any one of the above schemes, the both ends of dead axle overlap respectively has the connector, the connector can be dismantled with the dead axle and be connected, the bottom of connector is equipped with the connecting hole, wire rope's one end is passed through the connecting hole and is fixed with the connector.

Preferably, in any of the above schemes, the annular disc is fixed on the fixed shaft on one side of the connector, and the connector and the annular disc are fixed through a plurality of bolts and nuts.

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

the hoisting device is arranged in a double-winch mode, the rope winding mode is changed into a double-rope winding mode to be connected with the lifting hook, and under the condition of the same hoisting capacity, the hoisting speed is obviously increased, so that the hoisting efficiency is improved, and the working efficiency is improved; the two inclination angle sensors are arranged on the support, so that the inclination state of the lifting hook is judged, and the front winch and the rear winch can achieve the synchronism of lifting actions through synchronous control.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a quick lifting device of a luffing jib tower crane according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the connection between the connector and the fixed shaft;

FIG. 3 is a side view of the connecting head of FIG. 2;

fig. 4 is a schematic structural diagram of two winches installed on a boom tower crane.

Wherein: 1. a winch; 2. a transition shaft; 3. a guide pulley; 4. fixing a shaft; 5. a fixed pulley; 6. a movable pulley; 7. a movable shaft; 8. a hook; 9. a tilt sensor; 10. a support; 11. a connector; 12. an annular disc; 13. clamping the column; 14. a notch; 15. trepanning; 16. and connecting the holes.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-4, the quick lifting device for a swing arm tower crane provided in an embodiment of the present invention includes two winches 1, an arm head pulley block and a hook 8 pulley block, wherein the two winches 1 are installed on a balance arm of the swing arm tower crane in a front-back manner, the arm head pulley block is installed at an end of a boom of the swing arm tower crane, the arm head pulley block includes a fixed shaft 4 and a fixed pulley 5, the fixed shaft 4 is fixed at the end of the boom, the fixed shaft 4 is rotatably connected with a plurality of fixed pulleys 5 arranged at equal intervals along an axis of the fixed shaft 4, the hook 8 pulley block includes a support 10, a movable shaft 7 and a movable pulley 6, the movable shaft 7 is fixed on the support 10, the movable shaft 7 is rotatably connected with a plurality of movable pulleys 6 arranged at equal intervals along an axis thereof, a center portion of a bottom of the support 10 is connected with the hook 8, and steel wire ropes on the two winches 1 are respectively wound around the plurality of fixed pulleys 5 in the arm head pulley block and the plurality of the hook 8 pulley block and the movable pulleys in the hook 8 pulley block And the wheel 6 is used for enabling the lifting hook 8 to move up and down through winding of the steel wire rope, and the parts, corresponding to the two steel wire ropes, on the support are respectively provided with an inclination angle sensor so as to judge the inclination state of the lifting hook. The number of the fixed pulleys 5 and the movable pulleys 6 wound by the steel wire ropes on the two winches 1 is the same. The lifting hook 8 pulley block is positioned below the arm head pulley block.

Specifically, when the steel wire ropes are wound, the steel wire ropes on the two winches 1 are respectively wound on the fixed pulleys 5 and the movable pulleys 6 in equal quantity, then the fixed pulleys and the movable pulleys are respectively fixed with the end parts of the adjacent fixed shafts 4 to complete winding, the two steel wire ropes are respectively positioned on two sides of the lifting hook 8 to ensure that the lifting hook 8 is positioned in the center part, and the winding mode of the two steel wire ropes on the movable pulleys is symmetrical with the center of the movable shaft.

The fixed pulleys 5 and the movable pulleys 6 wound by the two windlasses 1 are the same in number, so that the moving shaft 7 can be kept in a horizontal state.

In the embodiment, the double winches 1 are arranged, and the front winch 1 and the rear winch 1 achieve the synchronism of lifting actions through synchronous control; the rope winding mode is changed into a double rope winding mode to connect the lifting hook 8, and under the condition of the same lifting capacity, the lifting speed is obviously increased, so that the lifting efficiency is improved, and the working efficiency is improved.

Two of the tilt sensors 9 are symmetrically distributed about the center of the moving axis 7. The inclination angle sensor can be NB wireless inclination angle sensor, and the model can be TQ36, inclination angle sensor 9 and swing arm tower machine's control end wireless connection, and two inclination angle sensors convey the numerical value that detects to the control end and contrast to judge the lifting hook to which wire rope direction slope, with the detection of realization tilt state, the control end controls the flexible speed of wire rope on two hoists through the tilt state, makes it reach synchronous purpose.

The telescopic speed signal of the detection steel wire rope is transmitted to the control end in a wireless mode, so that the synchronism of lifting of the two winches 1 is controlled, the levelness of the lifting hook 8 is guaranteed, and the inclination is avoided.

The suspension arm is further provided with a transition shaft 2, the transition shaft 2 is rotatably connected with two guide pulleys 3, and a steel wire rope on the winch 1 is wound around the guide pulleys 3 and then wound on a fixed pulley 5 in the arm head pulley block.

One ends of the steel wire ropes on the two winches 1 are respectively fixed with two ends of the fixed shaft 4.

The both ends of dead axle 4 overlap respectively has connector 11, connector 11 can be dismantled with dead axle 4 and be connected, the bottom of connector 11 is equipped with connecting hole 16, wire rope's one end is passed through the connecting hole and is fixed with connector 11.

Fixed ring shape dish 12 on the dead axle 4 of connector 11 one side, ring shape dish 12 are located one side that connector 11 is close to the arm head assembly pulley, it is fixed through a plurality of bolts and nut between connector 11 and the ring shape dish 12. Specifically, a plurality of mounting holes are formed in the annular disc 12 and the connector 11, and bolts penetrate through the mounting holes to be connected with nuts.

With the design of connector 11 and dead axle 4 between for detachable structure, when connector 11 damaged, the change of the connector 11 of being convenient for, the operation is more convenient.

Further, be equipped with trepanning 15 on connector 11 in order to overlap on the dead axle, the top and the bottom of trepanning 15 are equipped with breach 14 respectively, and the breach 14 on top and the central symmetry of breach 14 with trepanning 15 of bottom, annular disc 12 keeps away from dead axle top and the bottom of arm head assembly pulley one side and fixes card post 13 respectively, and two card posts 13 can pass in corresponding breach 14 simultaneously to make connector 11 be connected with annular disc 12, when connecting promptly, the connector is located between card post and the annular disc.

Furthermore, the diameter of trepanning 15 is greater than the diameter of dead axle 4 to make the connector cover on the dead axle, when the top of trepanning was laminated with the dead axle, the breach on trepanning top was less than the card post on dead axle top, made the card post unable from passing through in the breach.

Through the cooperation of card post 13 and breach 14, not only make the cover that connector 11 can be smooth on the dead axle between card post 13 and annular disc 12, the card post plays the spacing effect of axial to the connector simultaneously, can't break away from on dead axle 4 with connector 11 restriction, because of not hard up make connector 11 break away from the problem that drops from dead axle 4 easily with annular disc 12 when avoiding adopting the screw bolt and nut to connect, reduces danger.

The utility model provides a quick lifting device of a swing arm tower crane, which has the following working principle: two hoist engines 1 move simultaneously, when releasing winding wire rope, 8 assembly pulleys of lifting hook move down gradually along with releasing of wire rope to make 8 lower removals of lifting hook in order to hoist and mount article, when hoist engine 1 was reeled up wire rope, along with packing up of wire rope, 8 assembly pulleys of lifting hook drove 8 and move up, realize the purpose of the article hoist that will hook, receive and release the in-process at wire rope, two inclination sensor 9 feed back numerical signal to the control end, control two hoist engines 1 and reach the purpose of synchronization action.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It will be understood by those skilled in the art that the utility model includes any combination of the elements of the foregoing description and the detailed description as well as those illustrated in the drawings, which are meant to be space-limited and not intended to constitute a part of the specification in any way whatsoever, the combination being such that the description is not intended to be exhaustive. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A quick lifting device of a swing arm tower crane is characterized by comprising two winches, an arm head pulley block and a hook pulley block, wherein the winches are arranged on a balance arm of the swing arm tower crane in a front-back mode, the arm head pulley block is arranged at the end part of a suspension arm on the swing arm tower crane, the arm head pulley block comprises a fixed shaft and a fixed pulley, the fixed shaft is fixed at the end part of the suspension arm, the fixed shaft is rotatably connected with a plurality of fixed pulleys which are arranged at equal intervals along the axis of the fixed shaft, the hook pulley block comprises a support, a moving shaft and a movable pulley, the moving shaft is fixed on the support, the moving shaft is rotatably connected with a plurality of movable pulleys which are arranged at equal intervals along the axis of the moving shaft, the center part at the bottom of the support is connected with a hook, and steel wire ropes on the two winches are respectively wound on the plurality of fixed pulleys in the arm head pulley block and the plurality of movable pulleys in the hook pulley block, the lifting hook is driven to move up and down by winding the steel wire ropes, and the parts of the bracket corresponding to the two steel wire ropes are respectively provided with an inclination angle sensor.

2. The boom tower crane quick lifting device as claimed in claim 1, wherein two tilt angle sensors are symmetrically distributed about a center of a moving axis.

3. The quick lifting device of the swing arm tower crane as claimed in claim 1, wherein the boom is further provided with a transition shaft, the transition shaft is rotatably connected with two guide pulleys, and the steel wire rope on the winch is wound on the guide pulleys and then wound on the fixed pulleys in the arm head pulley block.

4. The quick lifting device of the movable arm tower crane as claimed in claim 1, wherein one end of the wire rope on the two winches is fixed to both ends of the fixed shaft respectively.

5. The quick lifting device of the swing arm tower crane as claimed in claim 1, wherein the number of the fixed pulleys and the movable pulleys wound by the wire rope on the two winches is the same.

6. The quick lifting device of the swing arm tower crane as claimed in claim 1, wherein the two ends of the fixed shaft are respectively sleeved with a connector, the connectors are detachably connected with the fixed shaft, the bottom end of each connector is provided with a connecting hole, and one end of the steel wire rope is fixed with the connectors through the connecting holes.

7. The quick lifting device of the movable arm tower crane as claimed in claim 6, wherein the annular disc is fixed on the fixed shaft at one side of the connector, and the connector and the annular disc are fixed through a plurality of bolts and nuts.