Fixing device for slewing mechanism of tower crane

Abstract

The utility model discloses a fixing device for a slewing mechanism of a tower crane, which comprises an upper support and a slewing mechanism positioned on the upper support, and the slewing mechanism is connected onto the upper support through a first fixing mechanism and a second fixing mechanism; the first fixing mechanism comprises a pressing plate, a positioning block and a first bolt, a notch is formed in the swing mechanism, the positioning block is fixedly arranged on the upper support and located in the notch of the swing mechanism, the pressing plate is located above the positioning block, and the first bolt penetrates through the pressing plate and is connected to the positioning block. And mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, in particular to a fixing device for a slewing mechanism of a tower crane. Background Art

[0002] Tower cranes are a type of lifting equipment used in construction, and they play a very important role in transportation. The current market share of tower cranes is mainly small and medium-sized. The slewing mechanism is mainly fixed by a circle of bolts. It is completely feasible to use it on small and medium-sized tower cranes, but the overall structure and weight of large tower cranes are huge. In order to drive the entire upper structure to rotate, the power and torque generated by the slewing mechanism are also relatively large. At this time, the previous bolt fixation is not very reliable, which will cause the occurrence of slewing mechanism bolt breakage accidents, threatening the safety of tower crane use. At the same time, a circle of bolts fixes a large number of bolt groups, which requires a lot of manpower and material resources during installation and disassembly, which is not conducive to workers' operation and reduces installation and disassembly efficiency.

[0003] Therefore, it is particularly necessary to provide a slewing mechanism fixing device for a tower crane which has a simple and reasonable structure, is safe and reliable, is easy to install and disassemble, and improves work efficiency to replace the previous slewing mechanism fixing method for a small tower crane. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a tower crane slewing mechanism fixing device, which has a simple and reasonable structural design, is safe and reliable, and is convenient to install and disassemble.

[0005] The utility model adopts the following technical solutions:

[0006] A tower crane slewing mechanism fixing device comprises an upper support and a slewing mechanism located on the upper support, wherein the slewing mechanism is connected to the upper support via a first fixing mechanism and a second fixing mechanism; the first fixing mechanism comprises a pressure plate, a positioning block and a first bolt, a notch is provided on the slewing mechanism, the positioning block is fixedly arranged on the upper support and located in the notch of the slewing mechanism, the pressure plate is located above the positioning block, and the first bolt passes through the pressure plate and is connected to the positioning block.

[0007] Preferably, one side of the positioning block is an inclined surface, the pressing plate includes an upper pressing plate and an inlay connected to one side of the upper pressing plate, and the inlay includes an inclined surface matching the positioning block.

[0008] Preferably, the positioning block and the inlay are both located in the notch.

[0009] Preferably, the second fixing mechanism includes a sleeve located in the mounting hole of the slewing mechanism and a second bolt passing through the sleeve and connected to the upper support.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The overall structural design is safe and reliable. After the pressure plate presses the positioning block, it is stuck in the left and right slots of the slewing mechanism to prevent the slewing mechanism from rotating horizontally, which well ensures the safety of the mounting bolts of the slewing mechanism. After the sleeve is installed, the upper support and the slewing mechanism are connected and fixed by the bolt group. After fixation, the pre-tightening force of the bolts prevents the slewing mechanism from moving vertically, thereby ensuring the safety of the tower crane and reducing the threat to personnel life safety.

[0012] 2. The overall structural design is simple and reasonable. Each rotary mechanism only requires a set of positioning blocks and pressure plates, two shaft sleeves and bolt groups. It is easy for workers to operate, speeds up the assembly and disassembly of the rotary mechanism, and saves labor costs.

[0013] 3. It has a wide range of applications and can be widely used in fixing the slewing mechanism of large and super-large tower cranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the fixing device of the slewing mechanism of a tower crane.

[0015] Figure 2 It is a schematic structural diagram of the second fixing mechanism.

[0016] Figure 3 It is a structural schematic diagram of the first fixing mechanism.

[0017] In the figure, the upper support 1, the slewing mechanism 2, the notch 2-1, the mounting hole 2-2, the shaft sleeve 3, the pressure plate 4, the upper pressure plate 4-1, the inlay 4-2, the second bolt 5, the positioning block 6, and the first bolt 7. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the technical solution of the utility model, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1-3 As shown, a tower crane slewing mechanism fixing device comprises an upper support 1 and a slewing mechanism 2 located on the upper support 1, wherein the slewing mechanism 2 is connected to the upper support 1 via a first fixing mechanism and a second fixing mechanism;

[0021] like Figure 3As shown, the first fixing mechanism includes a pressing plate 4, a positioning block 6 and a first bolt 7, a notch 2-1 is provided on the slewing mechanism 2, the positioning block 6 is fixedly arranged on the upper support 1 and is located in the notch 2-1 of the slewing mechanism 2, the pressing plate 4 is located above the positioning block 6, and the first bolt 7 passes through the pressing plate 4 and is connected to the positioning block 6 to prevent the slewing mechanism from rotating in the horizontal direction and to prevent the bolt from bearing shear force, so that the entire device is safe and reliable. In this embodiment, the positioning block 6 is provided with four bolt holes.

[0022] like Figure 2 As shown, the second fixing mechanism includes a sleeve 3 located in the mounting hole 2-2 of the slewing mechanism 2 and a second bolt 5 passing through the sleeve 3 and connected to the upper support 1, so as to achieve a fast connection between the upper support 1 and the slewing mechanism 2, avoid the slewing mechanism from moving up and down, and make the entire device safe and reliable.

[0023] Among them, one side of the positioning block 6 is an inclined surface, the pressure plate 4 includes an upper pressure plate 4-1 and an inlay 4-2 connected to one side of the upper pressure plate 4-1, the inlay 4-2 includes an inclined surface matching the positioning block 6, and the positioning block 6 and the inlay 4-2 are both located in the slot 2-1.

[0024] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. A tower crane slewing mechanism fixing device, characterized in that: The invention comprises an upper support (1) and a slewing mechanism (2) located on the upper support (1); the slewing mechanism (2) is connected to the upper support (1) via a first fixing mechanism and a second fixing mechanism; the first fixing mechanism comprises a pressing plate (4), a positioning block (6) and a first bolt (7); a notch (2-1) is provided on the slewing mechanism (2); the positioning block (6) is fixedly arranged on the upper support (1) and is located in the notch (2-1) of the slewing mechanism (2); the pressing plate (4) is located above the positioning block (6); and the first bolt (7) passes through the pressing plate (4) and is connected to the positioning block (6).

2. A tower crane slewing mechanism fixing device according to claim 1, characterized in that: One side of the positioning block (6) is an inclined surface, and the pressing plate (4) comprises an upper pressing plate (4-1) and an inlay (4-2) connected to one side of the upper pressing plate (4-1), and the inlay (4-2) comprises an inclined surface matching the positioning block (6).

3. A tower crane slewing mechanism fixing device according to claim 2, characterized in that: The positioning block (6) and the inlay (4-2) are both located in the notch (2-1).

4. A tower crane slewing mechanism fixing device according to claim 1, characterized in that: The second fixing mechanism comprises a shaft sleeve (3) located in the mounting hole (2-2) of the rotary mechanism (2) and a second bolt (5) passing through the shaft sleeve (3) and connected to the upper support (1).

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