Adjustable supporting leg of large tower crane

Abstract

The utility model relates to the technical field of building structures, and discloses an adjustable supporting leg of a large tower crane in order to solve the problems that in the prior art, adjustment is difficult, and horizontal errors are prone to being generated. Comprising supporting legs used for supporting and a lining used for being connected with the supporting legs, the lining is arranged in a cross shape, the ends of the lining arranged in the cross shape are connected with the supporting legs, fixing holes used for fixing reinforcing steel bars are formed in the bottoms of the supporting legs, transverse connecting plates are arranged at the upper ends of the supporting legs, and the supporting legs are fixedly connected with the lining through the transverse connecting plates. A fixing groove is formed in the top of the supporting leg, and the tenon is adjustably arranged in the fixing groove. The tenon, the supporting leg and the lining are connected into a whole to form a set of stable supporting leg device, so that the safety risk in the operation process of the tower crane is reduced. And meanwhile, the adjustable tenons are provided, the corresponding models are set according to the thickness of the middle boss, and it is guaranteed that the four tenons of the tower crane are located on the same horizontal plane.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to an adjustable support leg of a large tower crane. Background Art

[0002] Fixed-leg tower cranes are designed and manufactured to meet the demands of modern construction projects for high-efficiency and high-safety lifting equipment. With the acceleration of urbanization and the increasing number of high-rise buildings, traditional lifting equipment can no longer fully meet the precision, stability, and cost-effectiveness required of modern construction. Consequently, fixed-leg tower cranes have emerged. With their unique structural design and efficient operation, they have become an indispensable piece of equipment for large-scale construction sites.

[0003] This type of tower crane typically consists of a metal structure, drive system, control system, and safety devices. Its legs can be fixed to the ground or a building to provide stable support. They are primarily designed to meet the construction industry's high standards for lifting equipment in terms of height, load capacity, and stability.

[0004] During routine construction, large horizontal errors during the pre-embedded tower crane legs can cause significant trouble for subsequent construction and even lead to serious safety accidents. Therefore, leveling joints are required to ensure that the four tenons of the tower crane are aligned. However, the horizontal errors caused by pre-embedded tower crane legs are rarely completely consistent. The custom-made leveling joints that are used each time a large horizontal error occurs during pre-embedded tower crane legs are difficult to recycle. Therefore, an adjustable tower crane leg was designed. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable support leg for a large tower crane, so as to solve the problem that the prior art is difficult to adjust and prone to horizontal errors.

[0006] To achieve the above-mentioned purpose, the specific technical solution of the adjustable legs of a large tower crane of the present invention is as follows:

[0007] A large tower crane has adjustable legs, comprising legs for support and linings for connecting the legs, the linings being arranged in a cross shape, each end of the cross-shaped lining being connected to the legs, fixing holes for fixing steel bars being provided at the bottom of the legs, the upper ends of the legs being provided with transverse connecting plates, the legs being fixedly connected to the linings via the transverse connecting plates, fixing grooves being provided at the tops of the legs, and tenons being adjustably provided in the fixing grooves.

[0008] Furthermore, the transverse connecting plate and the tenon are both provided with connecting grooves for fixed connection, and the fixing rod fixes the end of the transverse connecting plate and the lining through a fixing pin.

[0009] Furthermore, there are eight fixing holes, which are evenly arranged on the bottom plates on both sides of the triangular plate of the supporting leg.

[0010] Furthermore, the upper end of the support leg and the lower end of the tenon are both provided with a fixing pin groove, and the tenon is fixed in the fixing groove of the support leg by a fixing pin.

[0011] Furthermore, the tenon is provided with twenty different models, including tenons with specifications of 0-20 mm, and the tenon is adjustably arranged in the fixing groove.

[0012] Furthermore, the lining includes two cross-shaped transverse plates, diamond-shaped protective plates are provided above and below the intersection of the middle part of the transverse plates, and both ends of the transverse plates are provided with embedding grooves for embedding transverse connecting plates.

[0013] The adjustable legs of a large tower crane provided by the utility model have the following advantages:

[0014] The combination of tenons, legs, and lining creates a stable outrigger assembly. The robust outrigger design and reliable connection reduce safety risks during tower crane operation, providing enhanced safety during construction. Twenty different tenon types are available, tailored to the thickness of the center boss to ensure all four tenons are aligned. Due to their simple structure, tower crane outriggers offer easy installation, excellent adjustability, and a stable and durable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure provided by the utility model;

[0016] Figure 2 A top view of the structure provided by the utility model;

[0017] Figure 3 This is an exploded view of the overall structure provided by the utility model.

[0018] In the figure: 1. lining; 11. transverse plate; 12. protective plate; 13. embedding groove; 14. connecting groove; 2. supporting leg; 21. transverse connecting plate; 22. fixing pin groove; 23. fixing groove; 24. triangular plate; 3. tenon; 4. fixing hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] See Figures 1 to 3The utility model provides a large tower crane adjustable support leg for tower crane installation. The large tower crane adjustable support leg 2 is composed of four support legs 2, an inner lining 1, a group of tenons 3 and eight fixing holes. The tenons 3 are divided into twenty different models according to the thickness of the middle boss, including different specifications of 0mm-20mm. Figure 1-3 The tenon 3 shown adopts a 10mm specification tenon 3, and the lining 1 is arranged in a cross shape. Each end of the cross-shaped lining 1 is connected to the support leg 2, and the bottom of the support leg 2 is fixed by a steel bar passing through a fixing hole. The upper end of the support leg 2 is set as a transverse connecting plate 21, and the support leg 2 is fixedly connected to the lining 1 through the transverse connecting plate 21. The transverse connecting plate 21 and the tenon 3 are both provided with a connecting groove 14 for fixed connection, and the transverse connecting plate 21 and the end of the lining 1 are fixed by a fixing pin; a fixing groove 23 is provided on the top of the support leg 2, and the tenon 3 is adjustably set in the fixing groove 23.

[0021] By placing the legs 2 at each end of the cross-shaped lining 1, they form a single, integrated unit, creating a stable leg 2 assembly. The robust leg 2 design and reliable connectors reduce safety risks during tower crane operation, providing enhanced safety during construction. By using tenons 3 of varying thicknesses (0mm-20mm), the length of the crane legs 2 can be precisely adjusted to suit varying conditions. The even distribution of the legs 2 and tenons 3, along with the cross-shaped design of the lining 1, evenly distributes the load, effectively improving the leg 2's load-bearing capacity and durability.

[0022] Preferably, the lining 1 includes two cross plates 11 arranged in a cross shape, and diamond-shaped protective plates 12 are provided above and below the intersection of the middle part of the cross plates 11. Both ends of the cross plates 11 are provided with embedding grooves 13 for embedding the transverse connecting plates 21. The cross-shaped design of the lining 1 can evenly disperse the pressure and load from the tower crane, ensuring that the support legs 2 remain stable when bearing force; so that the weight and force are evenly distributed in four directions, thereby reducing the risk of deformation or damage caused by uneven force. The diamond-shaped protective plates 12 are arranged above and below the intersection of the cross plates 11. These protective plates 12 can prevent wear and damage at the intersection and extend the service life of the lining 1. At the same time, the embedding grooves 13 on the cross plates 11 are used to fix the transverse connecting plates 21, making the connection between the support legs 2 and the lining 1 more stable and reducing the risk of loosening during operation. It is also convenient for assembly and disassembly, improving the adaptability and flexibility of the tower crane.

[0023] Preferably, eight fixing holes are provided, evenly spaced on the base plates of the triangular plate 24 of the leg 2. By evenly distributing eight fixing holes on the base plate of the leg 2, the stability of the leg 2's contact with the embedded area is increased, reducing lateral movement or shaking. This also ensures that force is evenly distributed throughout the entire leg 2 structure. This even force distribution reduces tilting or deformation of the leg 2 caused by uneven force, thereby improving overall stability.

[0024] Preferably, there are twenty different models of tenons 3, including 0-20mm specifications of tenons 3, and the tenons 3 are adjustably arranged in the fixing grooves 23. By using tenons 3 of appropriate thickness, it is possible to ensure that the contact between the tower crane legs 2 and the ground is more stable, reducing the potential safety hazards caused by the shaking or movement of the legs 2. At the same time, it is also possible to optimize the load distribution of the tower crane legs 2 to a certain extent, ensuring that each leg 2 can bear the load evenly, thereby improving the overall structural performance and safety. Having tenons 3 of various specifications enables the tower crane system to adapt to different construction environments and needs. The construction team can choose the most suitable tenon 3 specifications according to the thickness of the middle boss, thereby ensuring that the four tenons 3 of the tower crane are on the same horizontal plane, improving work efficiency and safety.

[0025] During implementation, first, the transverse connecting plate 21 on the leg 2 is embedded into the embedding groove 13 on the transverse plate 11. At this time, the connecting groove 14 on the transverse connecting plate 21 is aligned with the connecting groove 14 on the transverse plate 11, and the connecting groove 14 on the transverse connecting plate 21 is fixed to the connecting groove 14 on the transverse plate 11 by the fixing pin. Then, according to the thickness of the middle boss, the appropriate model of tenon 3 is selected, and the tenon 3 is placed into the fixing groove 23 at the top of the leg 2. The fixing pin groove 22 on the tenon 3 is aligned with the fixing pin groove 22 at the upper end of the leg 2. The fixing pin is passed through the fixing pin groove 22 on the tenon 3 and the fixing pin groove 22 at the upper end of the leg 2 to fix the tenon 3 to the pin groove. After completing the fixation of one set of tenons 3, the legs 2 at the remaining three ends of the lining 1 are fixed to the tenon 3 and the lining 1 to form an integral leg 2 device. At this time, the leg 2 device is placed into the pre-buried area, and the leg 2 is fixed to the pre-buried area by passing the steel bar through the fixing hole 4 of the leg 2 to complete the installation of the device.

[0026] When pre-embedded support legs 2 are installed, they need to be exposed 300mm to ensure that the pin holes of the support legs 2 are exposed. Before installing the tower crane, the level of the support legs 2 is measured and the appropriate tenons 3 are selected for installation based on the level. This method adjusts the level of the support legs 2 to ensure that the four tenons 3 of the tower crane are aligned. The tower crane support legs 2 of this application have the advantages of easy installation, good adjustability, and a stable and durable structure.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large tower crane with adjustable legs, characterized in that: The invention comprises a supporting leg (2) and an inner lining (1) for connecting the supporting leg (2), wherein the inner lining (1) is arranged in a cross shape, and each end of the inner lining (1) arranged in the cross shape is connected to the supporting leg (2), and a fixing hole (4) for fixing a steel bar is provided at the bottom of the supporting leg (2), and the upper end of the supporting leg (2) is provided as a transverse connecting plate (21), and the supporting leg (2) is fixedly connected to the inner lining (1) through the transverse connecting plate (21), and a fixing groove (23) is provided at the top of the supporting leg (2), and a tenon (3) is adjustably arranged in the fixing groove (23).

2. The adjustable legs of a large tower crane according to claim 1, characterized in that: The transverse connecting plate (21) and the tenon (3) are both provided with connecting grooves (14) for fixed connection, and the transverse connecting plate (21) and the end of the lining (1) are fixed by fixing pins.

3. The adjustable legs of a large tower crane according to claim 1, characterized in that: There are eight fixing holes, which are evenly arranged on the bottom plates on both sides of the triangular plate (24) of the supporting leg (2).

4. The adjustable legs of a large tower crane according to claim 1, characterized in that: The upper end of the support leg (2) and the lower end of the tenon (3) are both provided with a fixing pin groove (22), and the tenon (3) is fixed in the fixing groove (23) of the support leg (2) by a fixing pin.

5. The adjustable legs of a large tower crane according to claim 1, characterized in that: The tenon (3) is provided with twenty different models, including tenons (3) with specifications of 0-20 mm.

6. The adjustable legs of a large tower crane according to claim 1, characterized in that: The inner lining (1) comprises two cross-shaped transverse plates (11), diamond-shaped protective plates (12) are provided above and below the intersection of the middle portion of the transverse plates (11), and both ends of the transverse plates (11) are provided with embedding grooves (13) for embedding transverse connecting plates (21).

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