Standard knot device and tower crane

Abstract

The application provides a standard joint device and a tower crane. The standard joint device comprises a main chord body, a male joint, a female joint and a pin shaft body. The male joint is arranged at a first end of the main chord body, a first plug hole is arranged on the male joint in a radial direction, the female joint is arranged as a hollow pipe and is connected with a second end of the main chord body, an outer diameter of the female joint is equal to an outer diameter of the main chord body, an inner diameter of the female joint is smaller than an inner diameter of the main chord body, a second plug hole is arranged on the female joint in a radial direction, the female joint is sleeved on the male joint of another standard joint device arranged adjacently, and the pin shaft body is arranged in the first plug hole and the second plug hole to connect two standard joint devices arranged adjacently. The reinforcing plate outside the female joint is cancelled, the problem of complex manufacturing process of the reinforcing plate is fundamentally solved, and the arrangement of the rollers of the climbing frame is not limited, so that the design of the climbing system is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a standard section device and a tower crane. Background Art

[0002] Tower cranes are commonly used lifting equipment in construction projects. The main body of a tower crane is composed of a series of standard sections stacked from bottom to top. Currently, the main chords of the standard round tube sections on the market are primarily connected by pins. The pin holes at the main chord joints weaken the strength of these sections. To reinforce these sections, reinforcement plates are typically installed on the outside of the main chord joints. However, to match the standard round tube sections, the reinforcement plates are irregular in shape and complex to manufacture. Furthermore, the installation of these reinforcement plates places certain restrictions on the design of the climbing frame and its rollers, hindering the development of climbing systems. Summary of the Invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a standard section device and a tower crane, aiming to solve the technical problems that the manufacturing process of the reinforcement plate is complicated and the setting of the reinforcement plate restricts the development of the climbing system.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a standard joint device, wherein the standard joint device includes a main chord body, a male joint, a female joint and a pin shaft body; the main chord body is configured as a hollow circular tube; the male joint is arranged at the first end of the main chord body, and a first radially extending pin hole is opened on the male joint; the female joint is configured as a hollow circular tube and is connected to the second end of the main chord body, the outer diameter of the female joint is equal to the outer diameter of the main chord body, the inner diameter of the female joint is smaller than the inner diameter of the main chord body, a second radially extending pin hole is opened on the female joint, and the female joint is sleeved on the male joint of another adjacent standard joint device; the pin shaft body is used to pass through the first pin hole and the second pin hole to connect the two adjacent standard joint devices.

[0005] In an embodiment of the present invention, the female connector includes a welding portion, a reducing portion and a main body portion connected in sequence, the free end of the welding portion is welded to the second end of the main chord body, the inner diameter of the reducing portion gradually decreases from the welding portion toward the main body portion, and a second pin hole is opened on the main body portion.

[0006] In an embodiment of the present invention, a step for accommodating the second end of the main chord body is formed on the outer side of the free end of the welding portion, and the width of the step is equal to the wall thickness of the main chord body.

[0007] In the embodiment of the present invention, the number of the pin shaft bodies used to connect the male connector and the female connector is two.

[0008] In an embodiment of the present invention, a first sealing plate is provided on the inner wall of the female joint or on the inner wall of the main chord body close to the female joint.

[0009] In an embodiment of the present invention, a pin support box is further provided on the female connector, and the pin support box is located below the second pin hole.

[0010] In the embodiment of the present invention, a spiral oil groove is provided on the pin shaft body.

[0011] In the embodiment of the present invention, guide cone surfaces are formed on both ends of the pin shaft.

[0012] In the embodiment of the present invention, a stepping body is provided on the web side of the main chord body.

[0013] In order to achieve the above object, the present invention further provides a tower crane, wherein the tower crane includes the standard section device according to the above.

[0014] Through the above technical solution, the standard node device provided by the embodiment of the present invention has the following beneficial effects:

[0015] When the above-mentioned standard section device is used, a male joint is provided at the first end of the main chord body of the standard section device, and a female joint is provided at the second end. Since the female joint is provided as a hollow circular tube, the female joint on one standard section device can be sleeved on the male joint of another adjacent standard section device, and the two second pin holes radially arranged on the female joint can be aligned with the first pin holes radially passing through on the male joint, so that the pin shaft body is passed through the first pin hole and the two second pin holes to connect the two adjacent standard section devices. At the same time, since the outer diameter of the female joint is equal to the outer diameter of the main chord body and the inner diameter of the female joint is smaller than the inner diameter of the main chord, the wall thickness of the female joint is greater than the wall thickness of the main chord body, which plays a reinforcing role and eliminates the reinforcing plate on the outside of the female joint, which fundamentally solves the problem of complicated manufacturing process of the reinforcing plate. In addition, the thickening direction is on the inside, which will not restrict the arrangement of the climbing frame and the rollers of the climbing frame, thereby facilitating the design of the climbing system.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a structural schematic diagram of a standard node device according to one embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of a female connector according to an embodiment of the present invention;

[0020] Figure 3 is another structural schematic diagram of a standard node device according to one embodiment of the present invention;

[0021] Figure 4 is another structural schematic diagram of a standard section device according to an embodiment of the present invention;

[0022] Figure 5 yes Figure 4 Schematic diagram of the structure in the AA direction;

[0023] Figure 6 yes Figure 4 Schematic diagram of the structure in the middle BB direction.

[0024] Description of Reference Numerals

[0025] 1 Main chord body 2 Male connector

[0026] 21 First pin hole 3 Female connector

[0027] 31 Welding portion 32 Reducer portion

[0028] 33 Main body 34 Second latch hole

[0029] 35 Step 4 Pin body

[0030] 41 Spiral oil groove 42 Guide cone

[0031] 5 First sealing plate 6 Pin box

[0032] 61 Support plate 62 Stop plate

[0033] 7 Stepping Body 8 Oblique Abdominal Bar DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0035] The standard node device according to the present invention will be described below with reference to the accompanying drawings.

[0036] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a standard node device is provided, wherein the standard node device includes:

[0037] The main chord body 1 is configured as a hollow circular tube;

[0038] The male connector 2 is provided at the first end of the main chord body 1 and has a first pin hole 21 extending radially therethrough;

[0039] A female connector 3 is configured as a hollow circular tube and is connected to the second end of the main chord body 1. The outer diameter of the female connector 3 is equal to the outer diameter of the main chord body 1, and the inner diameter of the female connector 3 is smaller than the inner diameter of the main chord body 1. A second pin hole 34 is radially formed through the female connector 3. The female connector 3 is sleeved on the male connector 2 of another adjacent standard joint device; and

[0040] The pin shaft body 4 is used to pass through the first pin hole 21 and the second pin hole 34 to connect two adjacent standard joint devices.

[0041] When the above-mentioned standard joint device is used, the main chord body 1 of the standard joint device is provided with a male connector 2 at the first end and a female connector 3 at the second end. Since the female connector 3 is configured as a hollow circular tube, the female connector 3 on one standard joint device can be sleeved onto the male connector 2 of another adjacent standard joint device, and the second pin hole 34 radially extending through the female connector 3 can be aligned with the first pin hole 21 radially extending through the male connector 2, so that the pin shaft 4 is inserted into the first pin hole 21 and the second pin hole 34 to connect the two adjacent standard joint devices. At the same time, since the outer diameter of the female connector 3 is equal to the outer diameter of the main chord body 1 and the inner diameter of the female connector 3 is smaller than the inner diameter of the main chord, the wall thickness of the female connector 3 is greater than the wall thickness of the main chord body 1, which serves as a reinforcement. The reinforcement plate on the outside of the female connector 3 is eliminated, fundamentally solving the problem of complex reinforcement plate manufacturing process. In addition, the thickening direction is on the inside, which does not restrict the arrangement of the climbing frame and the climbing frame rollers, thereby facilitating the design of the climbing system.

[0042] It should be noted that since the hollow cylindrical female connector 3 can be fitted over the male connector 2, the outer diameter of the male connector 2 should be smaller than the inner diameter of the female connector 3, and the portion of the male connector 2 defining the first latch hole 21 can be a solid cylindrical body. Specifically, the male connector 2 can include a second sealing plate welded to the first end of the main chord body 1 and used to seal the hollow cylindrical main chord body 1, and a connector post disposed on the second sealing plate. The connector post can be a solid cylindrical body with an outer diameter smaller than the inner diameter of the female connector 3, and the connector post defines a first latch hole 21 extending radially therethrough.

[0043] In this embodiment of the present invention, the female connector 3 comprises a weld portion 31, a reducing portion 32, and a main body 33, which are sequentially connected. The free end of the weld portion 31 is welded to the second end of the main chord body 1. The inner diameter of the reducing portion 32 gradually decreases from the weld portion 31 toward the main body 33. The main body 33 defines a second pin hole 34. Because the outer diameter of the female connector 3 is equal to that of the main chord body 1, while the inner diameter of the weld portion 31 is greater than that of the main body, the wall thickness of the weld portion 31 is smaller than that of the main body 33. This minimizes the difference in wall thickness between the main chord body 1 and the weld portion 31, improving stability after welding.

[0044] In this embodiment of the present invention, a step 35 is formed on the outer side of the free end of the weld portion 31 to accommodate the second end of the main chord body 1. The width of the step 35 is equal to the wall thickness of the main chord body 1. In other words, the wall thickness of the weld portion 31 can be set to be greater than the wall thickness of the main chord body 1, and the step 35 formed on the outer side can overlap the second end of the main chord body 1 to facilitate welding positioning. It should be noted that before the main chord body 1 is welded to the step 35, the actual width of the step 35 may be less than the wall thickness of the main chord body 1. After welding, the weld portion 31 is fully melted, and the width of the step 35 is ultimately equal to the wall thickness of the main chord body 1. Furthermore, the inner wall of the main chord body 1 can abut against the outer wall of the weld portion 31 above the step 35, providing support.

[0045] like Figure 3 As shown, in the embodiment of the present invention, the number of the pin shaft bodies 4 used to connect the male connector 2 and the female connector 3 is two. Accordingly, two first latch holes 21 can be provided on the male connector 2 at intervals along the height direction, and two radially penetrating second latch holes 34 are correspondingly provided on the female connector 3. The two first latch holes 21 and the two second latch holes 34 are arranged in a one-to-one correspondence to form two channels, and the two pin shaft bodies 4 are passed through the two channels in a one-to-one correspondence to ensure the stability of the connection.

[0046] See also Figure 4 In this embodiment of the present invention, a first sealing plate 5 is provided on the inner wall of the female connector 3 or on the inner wall of the main chord body 1 near the female connector 3. The first sealing plate 5 is used to seal the cavity of the main chord body 1 to prevent corrosion of the main chord cavity. The first sealing plate 5 can be provided on the inner wall of the main chord body 1 near the female connector 3 or on the inner wall of the reducing portion 32 of the female connector 3.

[0047] See also Figure 4 and Figure 5In the embodiment of the present invention, a pin support box 6 is further provided on the female connector 3, and the pin support box 6 is located below the second latch hole 34. The pin shaft body 4 has a large mass. When the pin shaft body 4 is driven into the first latch hole 21 and the second latch hole 34, the pin shaft body 4 can be placed on the pin support box 6 for knocking, so as to reduce the labor intensity of the operator. Specifically, the pin support box 6 includes a support plate 61 provided directly below the second latch hole 34 and two stop plates 62 provided at opposite ends of the support plate 61. The pin shaft body 4 can be placed on the support plate 61 for knocking, and the two stop plates 62 can serve as a stop and guide the knocking direction at the same time.

[0048] like Figure 5 As shown, in the embodiment of the present invention, a spiral oil groove 41 can be provided on the pin shaft body 4. The provision of the spiral oil groove 41 facilitates the storage of lubricating oil, thereby playing a role in rust prevention and facilitating the installation of the pin shaft body 4.

[0049] In the embodiment of the present invention, both ends of the pin body 4 are formed with guide cones 42. The provision of the guide cones 42 allows the pin body 4 to be struck from both end faces or from both guide cones 42 when the pin body 4 is installed.

[0050] In addition, in order to facilitate the arrangement of the climbing frame and the rollers of the climbing frame, the pin shaft body 4 is arranged to avoid the rollers, and the opening directions of the first pin hole 21 and the second pin hole 34 are also arranged to avoid the rollers.

[0051] Please see again Figure 4 and Figure 6 In this embodiment of the present invention, a tread 7 is provided on the web side of the main chord body 1. This web side of the main chord body 1 is the side of the main chord body 1 where the standard section web is provided. That is, the tread 7 and the standard section web are provided on the same side of the main chord body 1. This allows the tread 7 to avoid the outer rollers, freeing the tread 7 from restricting the rollers of the climbing frame. Furthermore, placing the tread 7 on the web side of the main chord body 1 reduces the overall dimensions of the standard section device, facilitating transportation.

[0052] Please see again Figure 4 A standard section device can be provided with two groups of V-shaped web members between two adjacent main chord bodies 1 , and each group of V-shaped web members is composed of two diagonal web members 8 , that is, four diagonal web members 8 are provided between the two main chord bodies 1 .

[0053] To achieve the above-mentioned object, the present invention further provides a tower crane, wherein the tower crane includes the standard section device described above. Since the tower crane adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, and no further description is given here.

[0054] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0055] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A standard joint device, characterized in that: The standard section device comprises: The main chord body (1) is configured as a hollow circular tube; A male connector (2) is provided at the first end of the main chord body (1), and a first pin hole (21) extending radially through the male connector (2); A female joint (3) is configured as a hollow circular tube and connected to the second end of the main chord body (1); the outer diameter of the female joint (3) is equal to the outer diameter of the main chord body (1); the inner diameter of the female joint (3) is smaller than the inner diameter of the main chord body (1); a second pin hole (34) is radially penetrated through the female joint (3); the female joint (3) is sleeved on the male joint (2) of another adjacent standard joint device; and A pin shaft body (4) is used to be inserted into the first pin hole (21) and the second pin hole (34) to connect the two adjacent standard joint devices; The female connector (3) comprises a welding portion (31), a reducing portion (32) and a main body (33) connected in sequence, the free end of the welding portion (31) is welded to the second end of the main chord body (1), the inner diameter of the reducing portion (32) gradually decreases from the welding portion (31) toward the main body (33), the second pin hole (34) is provided on the main body (33), the outer side of the free end of the welding portion (31) is formed with a step (35) for accommodating the second end of the main chord body (1), the actual width of the step (35) before being welded to the main chord body (1) is set to be smaller than the wall thickness of the main chord body (1), and the final width can be made equal to the wall thickness of the main chord body (1) by welding through; The portion of the male connector (2) where the first pin hole (21) is formed is configured as a cylindrical solid body.

2. The standard node device according to claim 1, characterized in that: The number of the pin shaft bodies (4) used to connect the male connector (2) and the female connector (3) is two.

3. The standard joint device according to any one of claims 1 to 2, characterized in that: A first sealing plate (5) is provided on the inner wall of the female joint (3) or on the inner wall of the main chord body (1) close to the female joint (3).

4. The standard joint device according to any one of claims 1 to 2, characterized in that: A pin support box (6) is also provided on the female connector (3), and the pin support box (6) is located below the second pin hole (34).

5. The standard joint device according to any one of claims 1 to 2, characterized in that: A spiral oil groove (41) is provided on the pin shaft body (4).

6. The standard joint device according to any one of claims 1 to 2, characterized in that: Both ends of the pin shaft body (4) are formed with guide cone surfaces (42).

7. The standard joint device according to any one of claims 1 to 2, characterized in that: A stepping body (7) is provided on the web side of the main chord body (1).

8. A tower crane, characterized in that: The tower crane comprises the mast device according to any one of claims 1 to 7.

Images