Rotary tower body for tower crane, top section and tower crane

Abstract

The invention discloses a slewing tower body and a top section for a tower crane, the slewing tower body and the top section are included, an introduction beam and an introduction trolley are arranged on the upper portion of the slewing tower body, the introduction beam protrudes out of the slewing tower body, the introduction trolley can be hung on the introduction beam, and a detachable single piece is arranged on the side, provided with the introduction beam, of the slewing tower body. The introduction trolley comprises a frame body, a winch, fixed pulleys, movable pulleys, a winch steel wire rope and rollers, the winch is arranged on the frame body, the rollers are respectively arranged at four corners of the frame body, the rollers can be hung on the introduction beam and roll, the frame body is provided with a plurality of fixed pulleys and movable pulleys, and one fixed pulley is matched with one movable pulley for use. The movable pulley is provided with a structure connected with a standard knot, one end of a winch steel wire rope is fixed on the winch, and the other end penetrates through the fixed pulley and the movable pulley and then is connected to the frame body. The problems that in the prior art, in the tower crane mounting and dismounting process, the section adding or reducing process is tedious, labor intensity is large, and safety is insufficient are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and particularly relates to a revolving tower body, a top section and a tower crane for a tower crane. Background Art

[0002] When a traditional tower crane performs the operation of adding or reducing sections, the standard sections are introduced or withdrawn from the jacking sleeve below the slewing. When installing or disassembling multiple standard sections at one time, the tower body and the lower support need to be fixedly connected repeatedly to hoist the next section, resulting in repeated and cumbersome operation steps. The operators are prone to negligence and fatigue, and safety accidents are likely to occur. Summary of the Invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a revolving tower body, a top section and a tower crane for a tower crane, which solves the problems of cumbersome process, high labor intensity and insufficient safety during the installation and disassembly of the tower crane in the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A revolving tower body and a top section for a tower crane, including a revolving tower body and a top section. An introduction beam and an introduction trolley are provided on the upper part of the revolving tower body. The introduction beam protrudes outside the revolving tower body, and the introduction trolley can be hooked on the introduction beam. A detachable single piece is provided on one side of the revolving tower body where there is an introduction beam. The introduction trolley includes a frame body, a hoist, a fixed pulley, a movable pulley, a hoisting steel wire rope and rollers. The hoist is arranged on the frame body, and rollers are respectively arranged at the four corners of the frame body. The rollers can be hooked on the introduction beam and roll. A plurality of fixed pulleys and movable pulleys are arranged on the frame body. One fixed pulley and one movable pulley are used in cooperation. A structure for connecting with the standard section is provided on the movable pulley. One end of the hoisting steel wire rope is fixed on the hoist, and the other end passes through the fixed pulley and the movable pulley and then is connected to the frame body. A hoisting mechanism is provided on the top section, and the top section is connected to the top of the revolving tower body.

[0005] In the above technical solution, the internal space clearance dimension of the revolving tower body meets the requirement of being larger than the circumscribed circle of the horizontal section of the tower crane standard section, and can accommodate the introduction or withdrawal of the standard section.

[0006] In the above technical solution, a lifting ring or a hook is provided on the movable pulley.

[0007] In the above technical solution, the top section has a spindle-shaped structure with a large middle and small sides at both ends. Its larger middle part is a two-layer hollow structure, and the clearance dimension of the hollow structure meets the requirement of being larger than the circumscribed circle of the horizontal section of the tower crane standard section.

[0008] In the above technical solution, one end of the top section is fixedly connected to the boom, and the other end is fixedly connected to the counterweight arm.

[0009] A tower crane includes the above-mentioned revolving tower body and top section.

[0010] The beneficial effects of the present invention are as follows: The traditional method of introducing and removing standard sections from below the lower support is changed to the slewing tower above the upper support. During the installation or removal process, only the lower end of the standard section needs to be fixedly connected or disconnected. Compared with the traditional method that requires both the upper and lower ends of the standard section to be fixedly connected, the operation steps are reduced, and the operation difficulty and intensity are lowered.

[0011] When docking the newly added section, the winch on the trolley is used to lower the newly added section into place. When removing the standard section, the winch on the trolley is also used to lift the standard section until it is disengaged. There is no need to use the traditional telescopic jacking cylinder to make the standard section in place or disengaged, reducing the repeated operation process of the jacking cylinder.

[0012] Compared with the traditional tower crane that sets the hoisting mechanism at the far end of the counterweight arm, the present invention sets the hoisting mechanism on the top section, making the layout more compact, which is convenient for transportation, installation, and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present invention.

[0014] Figure 2 is Figure 1 a schematic structural diagram of the trolley in

[0015] Figure 3 It is a schematic diagram of the first step of using the present invention.

[0016] Figure 4 It is a schematic diagram of the second step of using the present invention.

[0017] Figure 5 It is a schematic diagram of the third step of using the present invention.

[0018] Figure 6 It is a schematic diagram of the fourth step of using the present invention.

[0019] Figure 7 It is a schematic diagram of the fifth step of using the present invention.

[0020] Wherein: 1, slewing tower; 2, top section; 3, hoisting mechanism; 4, trolley beam; 5, trolley; 6, detachable single piece; 7, winch; 8, fixed pulley; 9, movable pulley; 10, winch steel wire rope; 11, roller; 12, luffing mechanism; 13, hoisting steel wire rope; 14, load-carrying trolley; 15, hook; 16, standard section. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0022] Such as Figure 1 , Figure 2A slewing tower body and a top section for a tower crane, as shown, include a slewing tower body 1 and a top section 2. An introduction beam 4 and an introduction trolley 5 are provided at the upper part of the slewing tower body 1. The introduction beam 4 protrudes outside the slewing tower body 1, and the introduction trolley 5 can be hooked on the introduction beam 4. A detachable single piece 6 is provided on one side of the slewing tower body 1 where the introduction beam 4 is located. The introduction trolley 5 includes a frame body, a hoist 7, a fixed pulley 8, a movable pulley 9, a hoisting steel wire rope 10, and rollers 11. The hoist 7 is arranged on the frame body. Rollers 11 are respectively provided at the four corners of the frame body. The rollers 11 can be hooked on the introduction beam 4 and roll, driving the introduction trolley 5 to move on the introduction beam 4. There are 4 fixed pulleys 8 and 4 movable pulleys 9 on the frame body. One fixed pulley 8 and one movable pulley 9 are used in cooperation. A structure for connecting with a standard section 16 is provided on the movable pulley 9. One end of the hoisting steel wire rope 10 is fixed on the hoist 7, and the other end passes through the fixed pulley 8 and the movable pulley 9 and is then connected to the frame body. A hoisting mechanism 3 is provided on the top section 2, and the top section 2 is connected to the top of the slewing tower body 1.

[0023] During use, the slewing tower body 1 is connected to the upper support of the tower crane.

[0024] In the above technical solution, the internal space clearance dimension of the slewing tower body 1 meets the requirement of being larger than the circumscribed circle of the horizontal section of the tower crane standard section, and can accommodate the introduction or extraction of the standard section 16.

[0025] In the above technical solution, a lifting ring or a hook or a shackle is provided on the movable pulley 9 to lift the standard section 16 during adding or reducing sections.

[0026] In the above technical solution, the top section 2 is a spindle-shaped structure with a large middle and small sides at both ends. Its larger middle part is a two-layer hollow structure, and the clearance dimension of the hollow structure meets the requirement of being larger than the circumscribed circle of the horizontal section of the tower crane standard section. The structural design of the top section 2 is for connecting with the slewing tower body. Because of the installation requirements of the slewing tower body, the top section needs to be connected to it, and at the same time, the standard section can pass through the top section 2.

[0027] In the above technical solution, one end of the top section 2 is fixedly connected to the boom, and the other end is fixedly connected to the balance arm.

[0028] A tower crane includes the above-mentioned slewing tower body and top section.

[0029] As Figures 3 to 7As shown in the figure, when the present utility model is in use, for example, when adding a section to a tower crane, first remove the detachable single piece 6 of the slewing tower body 1, then fix the trolley 5 and the standard section 16 through the connection structure between the movable pulley 9 and the standard section, and hang the trolley 5 on the hook 15 of the tower crane; then operate the hoisting mechanism 3 to drive the hoisting wire rope 13, drive the hook 15 to rise, lift the standard section 16 and hoist it to a suitable position on the tower crane; operate the luffing mechanism 12 to drive the load trolley 14, the hook 15 and the standard section 16 to retract, and then operate the hoisting mechanism 3 to drive the hoisting wire rope 13 to release and make the hook 15 descend, so as to hang the trolley 5 and the standard section 16 on the guide beam 4; push the trolley 5 along the guide beam 4 into the inside of the slewing tower body 1, start the winch 7 to make the movable pulley 9 and the standard section 16 descend, and fix them to the original tower body; after fixing, remove the connection between the movable pulley 9 and the standard section 16, and push the trolley 5 along the guide beam 4 out of the outside of the slewing tower body 1, then the installation operation of one standard section 16 is completed.

[0030] Repeat the above steps to complete the installation of multiple standard sections 16. If the current section adding operation is completed, then restore the detachable single piece 6.

[0031] Operate the above steps in reverse to complete the removal of the standard section 16.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A revolving tower body and top section for a tower crane, characterized by: It includes a revolving tower body and a top section. The upper part of the revolving tower body is provided with an introduction beam and an introduction trolley. The introduction beam protrudes out of the revolving tower body. The introduction trolley can be hung on the introduction beam. The revolving tower body is provided with a detachable single piece on the side with the introduction beam. The introduction trolley includes a frame, a winch, a fixed pulley, a movable pulley, a winch wire rope and a roller. The winch is arranged on the frame. Rollers are respectively arranged at the four corners of the frame. The rollers can be hung on the introduction beam and roll. A plurality of fixed pulleys and movable pulleys are arranged on the frame. A fixed pulley and a movable pulley are used together. The movable pulley is provided with a structure connected with a standard section. One end of the winch wire rope is fixed on the winch, and the other end is connected to the frame after passing through the fixed pulley and the movable pulley. A lifting mechanism is provided on the top section, and the top section is connected to the top of the revolving tower body.

2. The revolving tower body and top section for a tower crane according to claim 1 are characterized in that: The clearance size of the internal space of the rotating tower body meets the requirement of being larger than the circumscribed circle of the horizontal cross-section of the standard section of the tower crane, and can accommodate the introduction or withdrawal of the standard section.

3. The revolving tower body and top section for a tower crane according to claim 1 are characterized in that: The movable pulley is provided with a lifting ring, a lifting hook or a shackle.

4. The revolving tower body and top section for a tower crane according to claim 1 are characterized in that: The top section is a spindle-shaped structure with a large middle and small sides, and the larger middle part is a two-layer hollow structure. The clearance size of the hollow structure meets the requirement of being larger than the circumscribed circle of the horizontal cross-section of the standard section of the tower crane.

5. The revolving tower body and top section for a tower crane according to claim 1 are characterized in that: One end of the top section is fixedly connected to the lifting arm, and the other end is fixedly connected to the balance arm.

6. A tower crane, characterized in that: It comprises the revolving tower body and top section as described in claims 1 to 5.

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