Tower crane with upper section

Abstract

The utility model discloses an upper section adding tower crane which comprises a tower body assembly, a balance arm, a cargo boom, a jacking frame, a lower rotary table, an upper rotary table, an introduction frame, a loading trolley, a lifting hook, a hoisting mechanism, a luffing mechanism and a slewing mechanism, the tower body assembly comprises a plurality of standard sections which are connected in an up-down stacking mode, and the balance arm and the cargo boom are connected to form a linear structure. A lifting mechanism, a load trolley and a luffing mechanism are arranged on the linear structure, the lifting mechanism is connected with the load trolley and the lifting hook through a lifting steel wire rope, the luffing mechanism is connected with the load trolley through a luffing steel wire rope, and one section of the cargo boom is a top section. 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 utility model relates to engineering machinery technical field, concretely relates to a tower crane of upper section adding. BACKGROUND

[0002] The traditional tower crane is designed on the jacking sleeve when jacking and dismounting, and the standard section is introduced, so that the standard section needs to be introduced by the introduction beam or the introduction platform to transfer every time. Especially, the super large tower crane has large size and weight, and the introduction mechanism needs to be additionally arranged to pull the standard section in and out, so that the operation steps are complex. When the standard section is installed or dismounted, the standard section is in the stress state, and if there is manufacturing error or unbalanced stress, the dismounting is difficult, and the labor and physical strength of the operator are consumed, so that the construction efficiency is affected. SUMMARY

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a tower crane of upper section adding, which solves the problems of complicated process, large labor intensity and insufficient safety in the process of jacking and dismounting of the tower crane in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tower crane of upper section adding, comprising a tower body assembly, a balance arm, a lifting arm, a jacking frame, a lower rotary table, an upper rotary table, an introduction frame, a load trolley, a lifting hook, a hoisting mechanism, an amplitude changing mechanism and a slewing mechanism, the tower body assembly comprises a plurality of standard sections which are connected in a stacked manner, the balance arm and the lifting arm are connected into a linear structure, the linear structure is provided with the hoisting mechanism, the load trolley and the amplitude changing mechanism, the hoisting mechanism is connected with the load trolley and the lifting hook through a hoisting steel wire rope, the amplitude changing mechanism is connected with the load trolley through an amplitude changing steel wire rope, one section of the lifting arm is a top section, the top section is connected with the introduction frame at the lower part, the introduction frame is a single piece which is detachable on one side of the lifting arm, the bottom of the introduction frame is connected with the upper rotary table, the upper rotary table is provided with the slewing mechanism, the bottom of the upper rotary table is provided with the lower rotary table, the bottom of the lower rotary table is connected with the jacking frame, the jacking frame is sleeved outside the tower body assembly and connected with the standard section, and the four side surfaces of the standard section are provided with upper and lower two layers of steps.

[0005] In the above technical scheme, the jacking frame is provided with a jacking cross beam, a hanging shoe, an oil cylinder and a plurality of jacking ear plates, the plurality of jacking ear plates are used for being connected with the steps on the standard section, the jacking cross beam is connected with the piston end of the oil cylinder, the two sides of the jacking cross beam are provided with the hanging shoes which are used for being connected with the steps, and the cylinder body of the oil cylinder is connected on the jacking frame.

[0006] In the above technical scheme, the lower rotary table and the upper rotary table are provided with a slewing bearing, the slewing mechanism on the upper rotary table is engaged with the slewing bearing to drive the upper rotary table, the introduction frame, the lifting arm and the balance arm of the tower crane to rotate.

[0007] In the above technical scheme, the top section is provided with a luffing reversing pulley, a hoisting reversing pulley, a top section ear plate and a stop device, the luffing reversing pulley and the hoisting reversing pulley are arranged at one side of the top section close to the balance arm, so that the load trolley can travel to the tower crane rotation center, the stop device is arranged at the direction of the top section lower chord deviated to the balance arm, and is used for limiting the travel range of the load trolley, and the top section ear plate is used for pin connection with the lead-in frame ear plate pin.

[0008] The utility model discloses the beneficial effect is: the utility model discloses the traditional jacking sleeve frame is divided into two parts of jacking frame and lead-in frame, and the hoisting arm is embedded in the lead-in frame, so that the load trolley can receive the tower crane rotation center, and the lead-in beam does not need to be arranged to transfer the standard section when installing and disassembling, reduces the operation step, simplifies the installation and disassembly procedure, improves the operation efficiency and reduces the accident occurrence. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 For Figure 1 It is the structure schematic diagram of the utility model;

[0010] Figure 2 It is the standard section schematic diagram of the utility model;

[0011] Figure 3 It is the jacking frame schematic diagram of the utility model;

[0012] Figure 4 It is the jacking frame installation schematic diagram of the utility model;

[0013] Figure 5 It is the lead-in frame schematic diagram of the utility model;

[0014] Figure 6 It is the top section schematic diagram of the utility model;

[0015] Figure 7 It is the lead-in frame installation schematic diagram of the utility model;

[0016] Figure 8 It is the detachable single piece preparation disassembly schematic diagram of the utility model;

[0017] Figure 9 It is the hoisting schematic diagram of the utility model after the detachable single piece disassembly;

[0018] Figure 10 It is the standard section lead-in before state schematic diagram of the utility model;

[0019] Figure 11 It is the standard section lead-in after state schematic diagram of the utility model.

[0020] Wherein: 1, tower body assembly; 2, jacking frame; 3, lower rotary table; 4, upper rotary table; 5, lead-in frame; 6, hook; 7, load trolley; 8, lifting arm; 9, balance arm; 10, hoisting mechanism; 11, luffing mechanism; 12, slewing mechanism; 13, luffing wire rope; 14, hoisting wire rope; 15, standard section; 16, step; 17, jacking cross beam; 18, hanging shoe; 19, oil cylinder; 20, jacking lug plate; 21, slewing bearing; 22, detachable single piece; 23, lead-in frame lug plate; 24, luffing reversing pulley; 25, hoisting reversing pulley; 26, top section; 27, top section lug plate; 28, stop device. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and specific embodiments.

[0022] As Figure 1 shown in a top section tower crane, including tower body assembly 1, balance arm 9, lifting arm 8, jacking frame 2, lower rotary table 3, upper rotary table 4, lead-in frame 5, load trolley 7, hook 6, hoisting mechanism 10, luffing mechanism 11 and slewing mechanism 12, the tower body assembly 1 includes several upper and lower stacked connection standard sections 15, the balance arm 9, lifting arm 8 are connected into a character type structure, and the character type structure is provided with hoisting mechanism 10, load trolley 7, luffing mechanism 11, hoisting mechanism 10 is connected with load trolley 7 and hook 6 through hoisting wire rope 14, the luffing mechanism 11 is connected with load trolley 7 through luffing wire rope 13, and a section of lifting arm 8 is top section 26, and the lower part of top section 36 is connected with lead-in frame 5, and the side of lead-in frame 5 close to lifting arm 8 is detachable single piece 22, and the bottom of lead-in frame 5 is connected with upper rotary table 4, and upper rotary table 4 is provided with slewing mechanism 12, and the bottom of upper rotary table 4 is provided with lower rotary table 3, and lower rotary table 3 bottom is connected with jacking frame 2, and jacking frame 2 is sleeved outside tower body assembly 1, and is connected with standard section 15, and the four side surfaces of standard section 15 are all provided with upper and lower two layers of steps 16.

[0023] As Figure 2 shown, the four side surfaces of standard section 15 are provided with upper and lower two layers of steps 16.Step 16 can be used as the support when the tower crane is jacking, and also can be used as the fixed lug plate of jacking frame 2 and tower body assembly 1.

[0024] As Figure 3 shown, the jacking frame 2 is provided with jacking cross beam 17, hanging shoe 18, oil cylinder 19 and several jacking lug plates 20, and the several jacking lug plates 20 are used to be connected with the steps 16 on the standard section 15, the jacking cross beam 17 is connected with the piston end of oil cylinder 19, the two sides of jacking cross beam 17 are provided with hanging shoe 18, which is used to be connected with step 16, and the cylinder body of oil cylinder 19 is connected on jacking frame 2.

[0025] As Figure 4As shown, the lower rotary table 3 and the upper rotary table 4 are provided with a slewing bearing 21, and the slewing mechanism 12 on the upper rotary table 4 is engaged with the slewing bearing 21 to drive the upper rotary table 4, the lead-in frame 5, the hoisting arm 8 and the balance arm 9 to rotate.

[0026] As shown in the drawings, the lead-in frame 5 is provided with a detachable single piece 22 on the side close to the hoisting arm 8, and a lead-in frame lug 23 is arranged on the top of the lead-in frame 5. Figure 5 When the tower crane is performing the adding operation, the detachable single piece 22 is removed, and then a new standard section 15 can be led in from the lead-in frame, or when the reducing operation is performed, the removed standard section 15 can be led out. The lead-in frame lug 23 is used to be pinned with the top section 26 in the hoisting arm 8.

[0027] As shown in the drawings, the top section 26 is provided with a luffing reversing pulley 24, a hoisting reversing pulley 25, a top section lug 27 and a stop device 28. The luffing reversing pulley 24 and the hoisting reversing pulley 25 are arranged on the side of the top section 26 close to the balance arm 9, so that the load trolley 7 can travel to the rotary center of the tower crane. The stop device 28 is arranged on the lower chord of the top section 26 and is biased towards the balance arm 9, so as to limit the travel range of the load trolley 7. The top section lug 27 is used to be pinned with the lead-in frame lug 23. Figure 6 As shown in the drawings, the lead-in frame 5 is arranged on the upper rotary table 4 and is fixedly connected with the upper rotary table 4. The hoisting arm 8 and the balance arm 9 are fixedly connected to form a character-shaped arm frame. The top of the lead-in frame 5 is fixedly connected with the top section 26 in the hoisting arm 8.

[0028] Figure 7 As shown in the drawings, a method for assembling and disassembling an upper adding tower crane comprises the following steps:

[0029] As shown in the drawings, a method for assembling and disassembling an upper adding tower crane comprises the following steps: Figures 8 to 11 (1) When the tower crane is adding a standard section, the hoisting mechanism is operated to drive the hook through the hoisting wire rope, the detachable single piece of the lead-in frame is removed by the hook, and the detachable single piece is placed on the ground.

[0030] (2) The hoisting mechanism is operated to drive the hook through the hoisting wire rope, and the standard section is lifted to a suitable height.

[0031] (3) The luffing mechanism is operated to move the load trolley to the inside of the lead-in frame through the luffing wire rope, so as to move the hook and the standard section on the hook to the inside of the lead-in frame.

[0032] (4) The hoisting mechanism is operated to release the hoisting wire rope, and the lifted standard section is placed on the tower body assembly and is fixedly connected.

[0033] (5) The luffing mechanism is operated to move the load trolley out of the lead-in frame.

[0034] (5) The luffing mechanism is operated to move the load trolley out of the lead-in frame.

[0035] ​(6) The oil cylinder on the jacking frame, the jacking beam and the hanging shoe support the upper weight of the tower machine, and the connection between the jacking frame and the tower body assembly is removed;

[0036] (7) The jacking is performed by operating the oil cylinder, the upper structure of the tower machine is jacked up to the previous standard section, and the lug plate on the jacking frame is connected with the step on the standard section by a pin, that is, the installation work of one standard section is completed;

[0037] (8) The installation work of multiple standard sections can be completed by repeating the steps 1-7, and after the installation is completed, the detachable single piece can be reset through the lifting mechanism and the hook.

[0038] In the above technical solution, the disassembly process of the standard section is reversed to be performed.

[0039] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A top-slewing tower crane characterized by: The tower body assembly comprises several standard sections stacked up and down, the balance arm and the hoisting arm are connected in a linear structure, the linear structure is provided with the hoisting mechanism, the load trolley and the luffing mechanism, the hoisting mechanism is connected with the load trolley and the hook through the hoisting steel wire rope, the luffing mechanism is connected with the load trolley through the luffing steel wire rope, one section of the hoisting arm is a top section, the lower part of the top section is connected with the lead-in frame, the side of the lead-in frame close to the hoisting arm is a detachable single piece, the bottom of the lead-in frame is connected with the upper slewing table, the upper slewing table is provided with the slewing mechanism, the bottom of the upper slewing table is provided with the lower slewing table, the bottom of the lower slewing table is connected with the jacking frame, the jacking frame is sleeved outside the tower body assembly and connected with the standard section, and the four sides of the standard section are provided with upper and lower two layers of steps.

2. Top-tensioned tower crane according to claim 1, characterized in that The jacking frame is provided with a jacking cross beam, a hanging shoe, an oil cylinder and several jacking ear plates, the several jacking ear plates are used for being connected with the steps on the standard section, the jacking cross beam is connected with the piston end of the oil cylinder, the two sides of the jacking cross beam are provided with the hanging shoes and used for being connected with the steps, and the cylinder body of the oil cylinder is connected on the jacking frame.

3. Top-tensioned tower crane according to claim 1, characterized in that The slewing bearing is arranged between the lower slewing table and the upper slewing table, the slewing mechanism on the upper slewing table is engaged with the slewing bearing to drive the upper slewing table, the lead-in frame, the hoisting arm and the balance arm of the tower crane to rotate.

4. The top-tensioned tower crane of claim 1, wherein: The top section is provided with a luffing reversing pulley, a hoisting reversing pulley, a top section ear plate and a stop device, the luffing reversing pulley and the hoisting reversing pulley are arranged on the side of the top section close to the balance arm, so that the load trolley can travel to the slewing center of the tower crane, the stop device is arranged on the lower chord of the top section and deviated from the balance arm, and is used for limiting the travel range of the load trolley, and the top section ear plate is used for being pinned with the ear plate of the lead-in frame.

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