A combined boom of a tower crane

Abstract

The present invention discloses a combined boom of a tower crane, relating to the technical field of booms. The present invention aims to solve the problem of relatively high installation costs. The present invention includes a first single-section boom and a second single-section boom, the first single-section boom and the second single-section boom are installed together, both the first single-section boom and the second single-section boom are composed of two booms installed end to end, and the two booms are connected and fixed by a third pin shaft, a second split pin, and a connecting rod. This solution effectively modularizes the boom of the tower crane and combines it according to different working condition requirements. Greatly reduces the manufacturing cost and improves the efficiency. When fully ensuring the structural safety, segmented pin connections are adopted, which is convenient for installation, disassembly, and transportation. The structure design is compact and lightweight, and the manufacturing process is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of combined boom of tower cranes, and specifically to a combined boom of a tower crane. Background Art

[0002] At present, with the continuous emergence of landmark buildings along with the development of technology, large single components in engineering construction are becoming heavier and heavier, which puts higher and higher requirements on hoisting equipment, and related costs will also increase, such as manufacturing, processing, transportation, storage, etc. Summary of the Invention

[0003] To solve the above problems, that is, to solve the problems proposed in the above background art, the present invention provides a combined boom of a tower crane, including a first single-section boom and a second single-section boom. The first single-section boom and the second single-section boom are installed together. The first single-section boom and the second single-section boom are each composed of two booms installed end to end. The two booms are connected and fixed by a third pin shaft, a second split pin, and a connecting rod;

[0004] Ladders, platforms, meter plates, and hoisting pulley frames are respectively arranged on the booms. The ladders and platforms are installed on the booms through first bolt assemblies. The meter plates are installed on the upper chord of the right side of the booms through second bolt assemblies. The hoisting pulley frames are installed on the upper chord horizontal web members of the booms through third bolt assemblies. A second pin shaft is installed inside the upper chord channel steel of the boom through a first pin shaft and a first split pin. A positioning pin is installed in the pin hole at the end face of the boom;

[0005] The two booms installed end to end are connected by a connecting rod. The connecting rod is installed on the boom through a third pin shaft, and the third pin shaft is installed on the connecting rod through a second split pin;

[0006] The first single-section boom and the second single-section boom are combined together through a fourth pin shaft. The fourth pin shaft is installed and fixed through a third split pin. A hydraulic pin puller is installed on the second single-section boom. A sixth pin shaft is installed at the end of the hydraulic pin puller, and the sixth pin shaft is used to connect the first single-section boom and the second single-section boom. The sixth pin shaft is installed on the first single-section boom and the second single-section boom through a second locking pin. The second locking pin is installed on the sixth pin shaft through a fourth split pin. The first single-section boom and the second single-section boom are installed and fixed together through a fourth bolt assembly.

[0007] A further setting of the present invention is that a guardrail is installed on the platform.

[0008] A further setting of the present invention is that the hoisting pulley frame includes a main body, a snap ring, a locking bolt, a clamping plate, a pulley, a bearing, a first pin shaft and a spacer sleeve. The main body is installed on the boom through a third bolt assembly. The first pin shaft is inserted into the main body. A spacer sleeve, a bearing, a snap ring and a pulley are sequentially sleeved on the outer wall of the first pin shaft. The clamping plate is sleeved on one end of the first pin shaft and fixed by a locking bolt.

[0009] A further setting of the present invention is that the hydraulic pin extractor includes a pump station, an oil pipe, a fifth pin shaft and an oil cylinder. The oil cylinder is communicated with the pump station through the oil pipe. The oil pipe is installed together with the oil cylinder through the fifth pin shaft.

[0010] The beneficial technical effects of the present invention are as follows: This solution effectively modularizes the tower crane's boom and makes combinations according to different working conditions. It greatly reduces the manufacturing cost and improves the efficiency. With sectional pin connections while fully ensuring structural safety, it is convenient for installation, disassembly and transportation. The structure is designed to be compact and lightweight, and the manufacturing process is simple. The combined boom structure is simple and has clear force transmission. The boom is combined together through connecting rods and pins to increase the lifting load. Conversely, after removing components such as connecting rods and pins, the boom can also be used alone. It achieves allocation according to demand and makes full use of the utilization rate of the boom. The combined boom also meets the market demand in design and development, satisfies the lifting of large-tonnage components, effectively improves the lifting efficiency of the tower crane, saves energy, improves the construction efficiency, and is detachable and combinable to meet the use of tower cranes of different tonnages. Brief Description of the Drawings

[0011] Figure 1 Shows the schematic diagram of the boom structure.

[0012] Figure 2 Shows the schematic diagram of the combined structure of the first single-section boom and the second single-section boom.

[0013] Figure 3 Shows the schematic diagram of the ladder structure.

[0014] Figure 4 Shows the schematic diagram of the installation structure of the ladder through the first bolt assembly.

[0015] Figure 5 Shows the schematic diagram of the guardrail structure.

[0016] Figure 6 Shows the schematic diagram of the meter plate structure.

[0017] Figure 7 Shows the schematic diagram of the hoisting pulley frame structure.

[0018] Figure 8 Shows the schematic diagram of the positioning pin structure.

[0019] Figure 9 Shows the schematic diagram of the connecting rod installation structure.

[0020] Figure 10 Shows a schematic diagram of the installation structure of the sixth pin shaft.

[0021] Figure 11 Shows a schematic diagram of the installation structure of the fourth bolt assembly.

[0022] Figure 12 Shows a schematic diagram of the structure of a hydraulic pin puller.

[0023] Reference numerals in the drawings: 1, ladder; 2, platform; 2-1, guardrail; 3, boom; 4, first bolt assembly; 5, second bolt assembly; 6, boom length plate; 7, hoisting pulley bracket; 7-1, circlip; 7-2, locking bolt; 7-3, clamping plate; 7-4, pulley; 7-5, bearing; 7-6, first pin shaft; 7-7, spacer sleeve; 8, third bolt assembly; 9, second pin shaft; 10, first locking pin; 11, first split pin; 12, positioning pin; 13, third pin shaft; 14, second split pin; 15, connecting rod; 16, fourth pin shaft; 17, third split pin; 18, first single-section boom; 19, second single-section boom; 20, hydraulic pin puller; 20-1, pump station; 20-2, oil pipe; 20-3, fifth pin shaft; 20-4, oil cylinder; 21, sixth pin shaft; 22, second locking pin; 23, fourth split pin; 24, fourth bolt assembly. Detailed implementation manners

[0024] The following describes the preferred implementation manners of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0025] The present invention provides a combined boom for a tower crane. First, the components of a single-section boom are assembled. The ladder 1 and the platform 2 are fixed on the boom 3 with the first bolt assembly 4. The ladder 1 and the platform 2 are mainly used for the installation of the upper chord pin shaft of the combined boom. The guardrail 2-1 is installed on the platform 2 to provide safety protection. The boom length plate 6 is installed on the right upper chord of the boom 3 through the second bolt assembly 5 to facilitate the driver and the ground commander to know the hook amplitude in real time. The hoisting pulley bracket 7 is installed on the upper chord horizontal web member of the boom 3 and is locked by the third bolt assembly 8. The second pin shaft 9 for installing the boom is placed inside the upper chord channel steel of the boom and locked with the first pin shaft 10 and the first split pin 11. The positioning pin 12 is also installed in the pin hole at the end face of the boom 3 to ensure smooth operation of the luffing trolley for the lower chord connection positioning. At this time, the assembly of a single-section boom is completed, and when every two single-section booms 3 are combined together, it becomes a single-section combined boom.

[0026] The lower chords of the two-section boom 3 are combined together by the third pin shaft 13, the second split pin 14, and the connecting rod 15. Then, the upper chords of the two-section boom 3 are combined and locked together by the fourth pin shaft 16 and the third split pin 17. At this time, the combination connection of the single-section boom is completed. Next, the first single-section boom 18 and the second single-section boom 19 are installed with the sixth pin shaft 21 using the hydraulic pin puller 20, and tightened with the second locking pin 22 and the fourth split pin 23. The fourth bolt assembly 24 connects the lower chord ear plates of the boom, and the installation of the combined boom is completed. Finally, a lifting boom is formed, and the installation process is very convenient and fast.

[0027] The hoisting pulley bracket 7 includes a main body, a circlip 7-1, a locking bolt 7-2, a clamping plate 7-3, a pulley 7-4, a bearing 7-5, a first pin shaft 7-6, and a spacer sleeve 7-7. The main body is installed on the boom 3 through the third bolt assembly 8. The first pin shaft 7-6 is inserted into the main body. The outer wall of the first pin shaft 7-6 is sequentially sleeved with the spacer sleeve 7-7, the bearing 7-5, the circlip 7-1, and the pulley 7-4. The clamping plate 7-3 is sleeved on one end of the first pin shaft 7-6 and fixed by the locking bolt 7-2.

[0028] The hydraulic pin puller 20 includes a pump station 20-1, a hydraulic pipe 20-2, a fifth pin shaft 20-3, and a cylinder 20-4. The cylinder 20-4 is communicated with the pump station 20-1 through the hydraulic pipe 20-2, and the hydraulic pipe 20-2 is installed with the cylinder 20-4 through the fifth pin shaft 20-3.

[0029] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it without departing from the scope of the present invention, and the components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0030] In the description of the present invention, the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., which indicate directions or position relationships, are based on the directions or position relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or apparatus / device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in these processes, articles, or apparatus / devices.

[0033] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A combined boom of a tower crane, comprising a first single-section boom (18) and a second single-section boom (19), the first single-section boom (18) and the second single-section boom (19) being installed together, characterized in that: The first single-section boom (18) and the second single-section boom (19) are each composed of two booms (3) installed end to end. The two booms (3) are connected and fixed by a third pin shaft (13), a second split pin (14), and a connecting rod (15). Ladders (1), platforms (2), meter plates (6), and hoisting pulley brackets (7) are respectively arranged on the booms (3). The ladders (1) and platforms (2) are installed on the booms (3) by first bolt assemblies (4). The meter plates (6) are installed on the upper chord of the right side of the booms (3) by second bolt assemblies (5). The hoisting pulley brackets (7) are installed on the upper chord horizontal web members of the booms (3) by third bolt assemblies (8). A second pin shaft (9) is installed inside the upper chord channel steel of the boom (3) by a first locking pin (10) and a first split pin (11). A positioning pin (12) is installed in the pin hole at the end face of the boom (3). The two booms (3) installed end to end are connected by a connecting rod (15). The connecting rod (15) is installed on the boom (3) by a third pin shaft (13), and the third pin shaft (13) is installed on the connecting rod (15) by a second split pin (14). The first single-section boom (18) and the second single-section boom (19) are combined together by a fourth pin shaft (16). The fourth pin shaft (16) is installed and fixed by a third split pin (17). A hydraulic pin puller (20) is installed on the second single-section boom (19). A sixth pin shaft (21) is installed at the end of the hydraulic pin puller (20), and the sixth pin shaft (21) is used to connect the first single-section boom (18) and the second single-section boom (19). The sixth pin shaft (21) is installed on the first single-section boom (18) and the second single-section boom (19) by a second locking pin (22). The second locking pin (22) is installed on the sixth pin shaft (21) by a fourth split pin (23). The first single-section boom (18) and the second single-section boom (19) are installed and fixed together by a fourth bolt assembly (24). A guardrail (2-1) is installed on the platform (2). The hoisting pulley bracket (7) includes a main body, a circlip (7-1), a locking bolt (7-2), a clamping plate (7-3), a pulley (7-4), a bearing (7-5), a first pin shaft (7-6), and a spacer sleeve (7-7). The main body is installed on the boom (3) by a third bolt assembly (8). The first pin shaft (7-6) is inserted into the main body. A spacer sleeve (7-7), a bearing (7-5), a circlip (7-1), and a pulley (7-4) are sequentially sleeved on the outer wall of the first pin shaft (7-6). The clamping plate (7-3) is sleeved on one end of the first pin shaft (7-6) and fixed by a locking bolt (7-2).

2. The modular boom of a tower crane according to claim 1, characterized in that: The hydraulic pin extractor (20) includes a pump station (20-1), a tubing (20-2), a fifth pin shaft (20-3) and a cylinder (20-4). The cylinder (20-4) is communicated with the pump station (20-1) through the tubing (20-2), and the tubing (20-2) is installed with the cylinder (20-4) through the fifth pin shaft (20-3).

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