阅读说明：本技术 一种塔吊顶升防倾覆装置 (Tower crane jacking anti-overturning device ) 是由 张言华 张剑 张熠晖 于 2019-11-18 设计创作，主要内容包括：本发明提供了一种塔吊顶升防倾覆装置,所述防倾覆装置包括支座、弹性件、限位开关和支杆,所述支杆可转动设置于所述支座上,所述支杆长度方向的一端连接弹性件,通过弹性件伸长或缩短实现支杆以所述支座为支点转动,所述限位开关和弹性件位于支杆的同一侧,通过支杆转动实现支杆与限位开关相接触或分离,进而实现限位开关动作。有效的避免了塔吊在拆卸降节过程中由于误操作导致塔吊倾覆的风险,同时有效的避免了在塔吊顶升加节或拆卸降节过程中,操作人员违规启动四大机构导致塔吊失去平衡发生倾覆事故。(The invention provides a tower crane jacking overturn-preventing device which comprises a support, an elastic piece, a limit switch and a support rod, wherein the support rod is rotatably arranged on the support, one end of the support rod in the length direction is connected with the elastic piece, the support rod rotates by taking the support as a fulcrum through the extension or the shortening of the elastic piece, the limit switch and the elastic piece are positioned on the same side of the support rod, and the support rod is contacted with or separated from the limit switch through the rotation of the support rod, so that the action of the limit switch is realized. The risk that the tower crane topples because the maloperation leads to the tower crane in the festival in-process is fallen in dismantling to effectual having avoided simultaneously that tower crane jacking adds the festival or dismantles and falls the festival in-process, and operating personnel starts four big mechanisms in violation of rules and regulations and leads to the tower crane unbalance to take place the accident of toppling.)

1. The utility model provides a tower crane jacking prevents device of toppling, a serial communication port, prevent device of toppling (6) including support (6.1), elastic component, limit switch (6.3) and branch (6.4), branch (6.4) rotatable set up in on support (6.1), the elastic component is connected to branch (6.4) length direction's one end, through the elastic component extension or shorten realize branch (6.4) with support (6.1) rotate as the fulcrum, limit switch (6.3) and elastic component are located same one side of branch (6.4), rotate through branch (6.4) and realize branch (6.4) and contact or separate with limit switch (6.3), and then realize limit switch (6.3) action.

2. The tower crane jacking overturn preventing device is characterized in that a roller (6.5) is further arranged on one side, close to the standard joint (1), of the supporting rod (6.4).

3. The tower crane jacking anti-overturning device according to claim 2, wherein the anti-overturning device (6) moves relative to the standard knot (1) along with the jacking climbing frame (2), and the relative movement between the roller (6.5) and the standard knot (1) realizes the contact or separation of the roller and the standard knot; under the action of the elastic piece, the roller (6.5) is contacted with or separated from the standard knot (1) to realize the rotation of the support rod (6.4) relative to the support seat (6.1).

4. The tower crane jacking overturn preventing device of claim 3, wherein the elastic member is a spring.

5. The tower crane jacking overturn-preventing device of claim 3, wherein the overturn-preventing device (6) is divided into a first overturn-preventing device and a second overturn-preventing device according to installation forms;

the first anti-overturning device is arranged on a rotary lower support (4), the rotary lower support (4) is arranged on the jacking climbing frame (2) and moves relative to the standard joint (1) along with the jacking climbing frame (2), and the power-on or power-off of four mechanisms of the tower crane is controlled by the action of a limit switch (6.3) on the first anti-overturning device;

the second anti-overturning device is arranged on the jacking climbing frame (2) and located between the jacking climbing frame (2) and the standard knot (1), and the jacking pump station (7) is controlled to be powered on or powered off through the action of a limit switch (6.3) on the second anti-overturning device.

6. The tower crane jacking overturn prevention device according to claim 5, wherein the support (6.1) and the limit switch (6.3) are both arranged on the rotary lower support (4) in the first overturn prevention device, one end of the support rod (6.4) is connected with the rotary lower support (4) through an elastic member, and the other end of the support rod is provided with a roller (6.5).

7. The tower crane jacking overturn prevention device of claim 5, wherein the second overturn prevention device is characterized in that the support (6.1) and the limit switch (6.3) are both arranged on the jacking climbing frame (2), one end of the support rod (6.4) is connected with the jacking climbing frame (2) through an elastic member, and the end is provided with a roller (6.5).

Technical Field

The invention relates to the technical field of tower cranes, in particular to a tower crane jacking overturn-preventing device.

Background

When the tower crane is used for disassembling the standard section, the movement stroke of the jacking oil cylinder still exists after the working standard of disassembling the section is reached due to the fact that the jacking cross beam is placed on the wrong jacking step. The back is transported out to the standard festival that will dismantle, at this moment if operating personnel carried out wrong operation to jacking cylinder and will lead to the jacking to climb the frame and still move to the top, lead to the jacking to climb frame upper portion the jacking guide pulley break away from standard festival top surface, will lose balance and fixed fulcrum above the tower crane, consequently will lead to the emergence of major safety accident.

Meanwhile, no matter the tower crane is in the process of jacking and section adding or dismounting and section lowering, the tower crane is strictly forbidden to carry out rotation action, upper and lower hook movement, small amplitude movement and heavy object hoisting, otherwise, the accident of machine damage and human death can be caused. If the operator starts the four mechanisms by misoperation, the tower crane is out of balance, and therefore serious safety accidents can happen.

In conclusion, a tower crane jacking overturn-preventing device is urgently needed to solve the problems in the prior art.

Disclosure of Invention

The invention aims to provide a tower crane jacking overturn-preventing device, which has the following specific technical scheme:

the utility model provides a device that topples is prevented in tower crane jacking, prevent that toppling device includes support, elastic component, limit switch and branch, branch rotatable set up in on the support, the elastic component is connected to branch length direction's one end, through the elastic component extension or shorten realize branch with the support rotates as the fulcrum, limit switch and elastic component are located same one side of branch, rotate through branch and realize that branch and limit switch contact or separate, and then realize the limit switch action.

In the above technical solution, preferably, a roller is further disposed on one side of the support rod close to the standard knot.

Preferably, in the above technical scheme, the overturn preventing device moves relative to the standard knot along with the jacking frame, and the roller and the standard knot move relative to each other to realize contact or separation of the roller and the standard knot; under the action of the elastic piece, the roller is contacted with or separated from the standard knot to realize the rotation of the support rod relative to the support.

Preferably, in the above technical solution, the elastic member is a spring.

Preferably, in the above technical solution, the anti-overturn device is divided into a first anti-overturn device and a second anti-overturn device according to an installation form;

the first overturn preventing device is arranged on a lower rotary support, the lower rotary support is arranged on the jacking climbing frame and moves relative to the standard joint along with the jacking climbing frame, and the four mechanisms of the tower crane are controlled to be powered on or powered off through the action of a limit switch on the first overturn preventing device;

the second anti-overturning device is arranged on the jacking climbing frame and located between the jacking climbing frame and the standard joint, and the jacking pump station is controlled to be powered on or powered off through the action of a limit switch on the second anti-overturning device.

Preferably, in the above technical scheme, the support and the limit switch in the first overturn preventing device are both arranged on the lower rotary support, one end of the support rod is connected with the lower rotary support through an elastic member, and the other end of the support rod is provided with a roller.

Preferably among the above technical scheme, among the second anti-overturning device support and limit switch all set up in on the frame is climbed in the jacking, the one end of branch is passed through the elastic component and is connected the jacking and climb the frame, and sets up the gyro wheel at this end.

The technical scheme of the invention has the following beneficial effects:

(1) the tower crane jacking overturn-preventing device comprises a support, an elastic piece, a limit switch and a support rod, wherein the support rod is rotatably arranged on the support, one end of the support rod is connected with the elastic piece, the support rod rotates by taking the support as a fulcrum through the extension or shortening of the elastic piece, the limit switch and the elastic piece are positioned on the same side of the support rod, and the support rod is contacted with or separated from the limit switch through the rotation of the support rod, so that the action of the limit switch is realized. The overturn preventing device is simple in structure, the lever principle is utilized to be matched with the elastic piece to realize that the supporting rod is in contact with the limit switch to apply pressure to the limit switch, or the supporting rod is separated from the limit switch to stop applying pressure to the limit switch, the four mechanisms and the jacking pump station are controlled to be powered on or powered off through the action of the limit switch, and therefore major safety accidents in the process of adding or lowering sections of the tower crane are effectively prevented; by utilizing the lever principle, reliable pressure can be applied to the limit switch, and the working reliability of the overturn preventing device is ensured.

(2) According to the tower crane jacking overturn-preventing device, the roller is further arranged on one side, close to the standard knot, of the supporting rod, the roller is in contact with the standard knot, so that relative movement with the standard knot is achieved, and the phenomenon that the service life of the standard knot and the supporting rod is shortened due to abrasion caused by the fact that the supporting rod is in direct contact with the standard knot is avoided.

(3) The tower crane jacking anti-overturning device is divided into a first anti-overturning device and a second anti-overturning device, wherein the first anti-overturning device controls the four mechanisms of a tower crane to be powered on or powered off through the action of a limit switch, the second anti-overturning device controls the jacking pump station to be powered on or powered off through the action of the limit switch, the first anti-overturning device and the second anti-overturning device respectively correspond to different problems in the prior art, cannot interfere with each other and can work independently; first anti-overturning device has effectually avoided leading to major incident emergence because of violating the start-up four big mechanisms in tower crane jacking joining or dismantlement festival in-process, and the effectual tower crane of avoiding of second anti-overturning device is dismantling standard festival in-process, because the jacking crossbeam sets up the emergence that mistake and personnel maloperation lead to major incident, the effectual incident of avoiding the tower crane appearance of toppling of the combination of first anti-overturning device and second anti-overturning device.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the anti-overturning device of the present invention applied to a tower crane;

FIG. 2 is a close-up view of the area A in FIG. 1 (the first anti-rollover device does not function as a stop);

FIG. 3 is a schematic view of the first overturn preventing device in FIG. 2 in a limiting state;

FIG. 4 is a control schematic of the first anti-rollover device of FIG. 2;

FIG. 5 is a schematic diagram of the first anti-rollover device of FIG. 2 controlling four major mechanisms;

FIG. 6 is a close-up view at B in FIG. 1 (the second anti-rollover device does not function as a stop);

FIG. 7 is a schematic view of the second overturn preventing device of FIG. 6 in a limiting state;

FIG. 8 is a control schematic of the second anti-rollover device of FIG. 6;

FIG. 9 is a schematic diagram of the second anti-tip over device of FIG. 6 controlling the lift pump station;

wherein, 1, standard festival, 1.1, standard festival top surface, 2, the jacking climbs the frame, 3, the jacking is marked time, 3.1, the upper portion jacking is marked time, 3.2, the lower part jacking is marked time, 4, the gyration undersetting, 5, the jacking guide pulley, 6, the anti-overturning device, 6.1, the support, 6.2, the spring, 6.3, limit switch, 6.4, branch, 6.5, the gyro wheel, 7, the jacking pump station.

Detailed Description

Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.