CN214192351U

CN214192351U - Tower crane davit

Info

Publication number: CN214192351U
Application number: CN202120031546.9U
Authority: CN
Inventors: 董贤秋; 高强
Original assignee: Shandong Baimai Construction Machinery Co ltd
Current assignee: Shandong Baimai Construction Machinery Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-09-14
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses a tower crane suspension arm, which comprises four fixed rods and four mounting plates, wherein the four fixed rods are all horizontally penetrated through four corners of the four mounting plates and extend, a plurality of groups of bracket components are fixedly connected between every two fixed rods, the center of the inner top wall of each mounting plate is positioned right above the corresponding two fixed rods and is symmetrically and fixedly connected with a first fixing frame, the center of the inner bottom wall of each mounting plate is positioned right below the corresponding two fixed rods and is symmetrically and fixedly connected with a second fixing frame, the bottom opening of each first fixing frame is provided with a first pulley, and the top opening of each first fixing frame is provided with a second pulley, the utility model is provided with the four mounting plates and corresponding lifting mechanisms and hooks, and can flexibly select to hoist various small and medium-sized materials at one time or hoist a large-sized material together, the hoisting efficiency can be effectively improved, and meanwhile, the safety of the hoisting process can be ensured.

Description

Tower crane davit

Technical Field

The utility model relates to a hoist technical field especially relates to a tower crane davit.

Background

The tower crane is also called tower crane, and is the most common hoisting equipment on the construction site, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction, while the suspension arm is a metal structural member, is an important component of the crane, bears the work of hoisting load, and is usually supported on a rotating platform or a tower body of the crane by a connecting pin shaft, a steel wire rope or a hydraulic cylinder, and the tower crane is an essential equipment on the construction site.

Along with the continuous development of industry, more and more hoisting equipment is applied to in the production, the last davit of hoisting equipment is also diversified, current davit only is equipped with a set of couple and hoisting mechanism usually, only can hold during the hoisting construction and hang a material, cause hoist and mount efficiency of construction low, very big influence engineering progress, in addition, because it only has a set of couple and hoisting mechanism, current davit is when hoisting some large-scale materials, need carry out multiple fixed with the material, prevent that the hoist and mount in-process material falls, workman's work load has been increased to this mode, there is certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a tower crane boom.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a tower crane boom comprises four fixed rods and four mounting plates, wherein the four fixed rods horizontally penetrate through four corners of the four mounting plates and extend, and a plurality of groups of bracket assemblies are fixedly connected between every two fixed rods;

the center of the inner top wall of each mounting plate is positioned right above the corresponding two fixed rods and is symmetrically and fixedly connected with a first fixing frame, the center of the inner bottom wall of each mounting plate is positioned right below the corresponding two fixed rods and is symmetrically and fixedly connected with a second fixing frame, a bottom opening of each first fixing frame is provided with a first pulley, and a top opening of each first fixing frame is provided with a second pulley;

four the side center department of mounting panel is provided with the litter jointly, and the one end of litter runs through four mounting panels, the extension end terminal surface fixedly connected with stopper of litter, the one end that the stopper was kept away from to the litter is provided with the pneumatic cylinder, every the bottom center of mounting panel all is provided with the fixed block, every the bottom of fixed block all is provided with hoisting mechanism, every the equal fixedly connected with balancing weight in bottom of hoisting mechanism steel cable, every the equal fixedly connected with couple in bottom of balancing weight, per two it all is provided with the spring to lie in the litter surface between the mounting panel.

As a further description of the above technical solution:

corresponding first through holes are formed in the penetrating positions of the four fixing rods and the four mounting plates, and the outer walls of the four fixing rods are connected with the inner walls of the corresponding first through holes in a sliding mode.

As a further description of the above technical solution:

every sliding connection between first pulley and the second pulley and the dead lever that corresponds, every the terminal surface of first pulley pivot all is connected with the rotation of the first mount inner wall that corresponds.

As a further description of the above technical solution:

and the penetration positions of the sliding rod and the four mounting plates are provided with second through holes, and the outer wall of the sliding rod is in sliding connection with the inner walls of the four second through holes.

As a further description of the above technical solution:

every the terminal surface of second pulley pivot all is connected with the second mount inner wall rotation that corresponds, the drive end of pneumatic cylinder runs through the lateral wall center of mounting panel, and with litter one end terminal surface fixed connection.

As a further description of the above technical solution:

each group of support assemblies consists of two support rods in a cross mode, and each group of support assemblies is fixed with four fixed rods in a welding mode.

The utility model discloses following beneficial effect has: 1. the utility model discloses be provided with four mounting panels, four hoisting mechanism of group and four couples of group, when hoisting general material, can hoist four kinds of materials simultaneously at most, compare with traditional davit, hoist and mount efficiency of construction is high, simultaneously also indirect the engineering progress of accelerating.

2. The utility model discloses the four mounting panels that set up and the hoisting mechanism, the couple that correspond, when hoist and mount large-scale material, the interval of adjustable every group mounting panel and the hoisting mechanism, the couple that correspond is born the weight of large-scale material equally share to four mounting panels, can guarantee the security of hoist and mount construction by the at utmost in the hoist and mount process, has also reduced workman's work load simultaneously.

Drawings

Fig. 1 is a cross-sectional view of a tower crane boom according to the present invention;

fig. 2 is a top view of a tower crane boom according to the present invention;

fig. 3 is a side view of a tower crane boom according to the present invention.

Illustration of the drawings:

1. fixing the rod; 2. mounting a plate; 3. a bracket assembly; 4. a first fixing frame; 5. a second fixing frame; 6. a first pulley; 7. a second pulley; 8. a slide rod; 9. a limiting block; 10. a hydraulic cylinder; 11. a fixed block; 12. a hoisting mechanism; 13. a balancing weight; 14. hooking; 15. a spring.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a tower crane jib comprises four fixed rods 1 and four mounting plates 2, wherein the four fixed rods 1 horizontally penetrate through four corners of the four mounting plates 2 and extend, and a plurality of groups of bracket assemblies 3 are fixedly connected between every two fixed rods 1 to improve the structural strength of the jib;

the center of the inner top wall of each mounting plate 2 is positioned right above the corresponding two fixed rods 1 and is symmetrically and fixedly connected with a first fixing frame 4 for mounting a first pulley 6, the center of the inner bottom wall of each mounting plate 2 is positioned right below the corresponding two fixed rods 1 and is symmetrically and fixedly connected with a second fixing frame 5 for mounting a second pulley 7, the bottom opening of each first fixing frame 4 is provided with the first pulley 6, the top opening of each first fixing frame 4 is provided with the second pulley 7, and the four first pulleys 6 and the four second pulleys 7 are convenient for the movement of the four mounting plates 2;

the side center department of four mounting panels 2 is provided with litter 8 jointly, and four mounting panels 2 are run through to the one end of litter 8, the extension end terminal surface fixedly connected with stopper 9 of litter 8 plays limiting displacement, the one end that stopper 9 was kept away from to litter 8 is provided with pneumatic cylinder 10 and provides the power source, the bottom center of every mounting panel 2 all is provided with fixed block 11 and is convenient for hoisting mechanism 12 fixed, the bottom of every fixed block 11 all is provided with hoisting mechanism 12 and realizes the rising of couple 14, the equal fixedly connected with balancing weight 13 in bottom of every hoisting mechanism 12 steel cable prevents that couple 14 from playing to rise the in-process and rocking, the equal fixedly connected with couple 14 in bottom of every balancing weight 13, it all is provided with spring 15 to lie in litter 8 surfaces between per two mounting panels 2.

The penetrating parts of the four fixing rods 1 and the four mounting plates 2 are respectively provided with corresponding first penetrating holes, the outer walls of the four fixing rods 1 are respectively in sliding connection with the inner walls of the corresponding first penetrating holes so as to facilitate the four mounting plates 2 to slide along the surfaces of the four fixing rods 1, each first pulley 6 and each second pulley 7 are respectively in sliding connection with the corresponding fixing rods 1 so as to achieve horizontal movement of the four mounting plates 2, the end surface of the rotating shaft of each first pulley 6 is respectively in rotating connection with the inner wall of the corresponding first fixing frame 4 so as to facilitate the rotation of the first pulley 6, the penetrating parts of the sliding rod 8 and the four mounting plates 2 are respectively provided with a second penetrating hole, the outer wall of the sliding rod 8 is in sliding connection with the inner walls of the four second penetrating holes so as to facilitate the four mounting plates 2 to slide along the surfaces of the sliding rod 8, the end surface of the rotating shaft of each second pulley 7 is respectively in rotating connection with the inner wall of the corresponding second fixing frame 5 so as to facilitate the rotation of the second pulley 7, the driving end of the hydraulic cylinder 10 penetrates through the centers of the side walls of the mounting plates 2, and the end face of one end of the sliding rod 8 is fixedly connected, each group of support assemblies 3 is composed of two support rods in a crossed mode, and the structural strength of the lifting arm is fixedly improved between each group of support assemblies 3 and the four fixing rods 1 in a welding mode.

The working principle is as follows: the utility model discloses a tower crane davit, install this davit in tower crane's suitable position before using, then according to the shape size of the material of required hoist and mount, adjust the interval of four mounting panels 2, at this moment, start hydraulic cylinder 10, pneumatic cylinder 10 drive litter 8 removes, stopper 9 drives one of them mounting panel 2 and removes, simultaneously via the transmission of spring 15, the interval of four mounting panels 2 is reduced or enlarged, stop hydraulic cylinder 10 after the interval adjustment is accomplished, then start four hoisting mechanism 12, four hoisting mechanism 12 order about corresponding couple 14 descends, then place four kinds of materials on four couples 14 in proper order, then four hoisting mechanism 12 control corresponding couple 14 rises and lifts up the goods, then send the material to the target area through tower crane rotation, after reaching the target area, four hoisting mechanism 12 control corresponding couple 14 descend to the target area, then the material is taken off from the hook 14 manually, when large-scale material is hoisted, the material can be fixed on the four hooks 14, the weight of the large-scale material is shared by the four mounting plates 2, and the safety of the hoisting process is ensured.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A tower crane boom comprises four fixed rods (1) and four mounting plates (2), and is characterized in that the four fixed rods (1) horizontally penetrate through four corners of the four mounting plates (2) and extend, and a plurality of groups of bracket assemblies (3) are fixedly connected between every two fixed rods (1);

the center of the inner top wall of each mounting plate (2) is positioned right above the corresponding two fixed rods (1) and is symmetrically and fixedly connected with a first fixing frame (4), the center of the inner bottom wall of each mounting plate (2) is positioned right below the corresponding two fixed rods (1) and is symmetrically and fixedly connected with a second fixing frame (5), a first pulley (6) is arranged at the bottom opening of each first fixing frame (4), and a second pulley (7) is arranged at the top opening of each first fixing frame (4);

four the side center department of mounting panel (2) is provided with litter (8) jointly, and the one end of litter (8) runs through four mounting panels (2), the extension end terminal surface fixedly connected with stopper (9) of litter (8), the one end that stopper (9) were kept away from in litter (8) is provided with pneumatic cylinder (10), every the bottom center of mounting panel (2) all is provided with fixed block (11), every the bottom of fixed block (11) all is provided with hoisting mechanism (12), every the equal fixedly connected with balancing weight (13) in bottom of hoisting mechanism (12) steel cable, every the equal fixedly connected with couple (14) in bottom of balancing weight (13), per two it all is provided with spring (15) to lie in litter (8) surface between mounting panel (2).

2. The tower crane boom as claimed in claim 1, wherein corresponding first through holes are formed at the penetration positions of the four fixing rods (1) and the four mounting plates (2), and the outer walls of the four fixing rods (1) are slidably connected with the inner walls of the corresponding first through holes.

3. The tower crane boom according to claim 1, characterized in that each of the first pulleys (6) and the second pulleys (7) is slidably connected with the corresponding fixing rod (1), and the end surface of the rotating shaft of each of the first pulleys (6) is rotatably connected with the inner wall of the corresponding first fixing frame (4).

4. The tower crane boom according to claim 1, wherein the penetration positions of the slide rod (8) and the four mounting plates (2) are provided with second through holes, and the outer wall of the slide rod (8) is connected with the inner walls of the four second through holes in a sliding manner.

5. The tower crane boom according to claim 1, wherein the end surface of the rotating shaft of each second pulley (7) is rotatably connected with the inner wall of the corresponding second fixing frame (5), and the driving end of the hydraulic cylinder (10) penetrates through the center of the side wall of the mounting plate (2) and is fixedly connected with the end surface of one end of the slide rod (8).

6. The tower crane boom according to claim 1, characterized in that each group of said bracket assemblies (3) is formed by two support rods in a crossed manner, and each group of bracket assemblies (3) is fixed with four fixing rods (1) by welding.