WO2023134115A1

WO2023134115A1 - Mast section device and tower crane

Info

Publication number: WO2023134115A1
Application number: PCT/CN2022/099050
Authority: WO
Inventors: 王臻; 谢江平; 刘圣平; 李桂芳; 付英雄; 喻乐康
Original assignee: 中联重科建筑起重机械有限责任公司
Priority date: 2022-01-13
Filing date: 2022-06-16
Publication date: 2023-07-20
Also published as: CN114408770A

Abstract

Provided in the present application are a mast section device and a tower crane. The mast section device comprises a main chord body, a male joint, a female joint and pin bodies. The male joint is arranged at a first end of the main chord body, and a radially-through first pin hole is formed in the male joint. The female joint is a hollow circular tube and is connected to a second end of the main chord body, the outer diameter of the female joint being equal to that of the main chord body, and the inner diameter of the female joint being smaller than that of the main chord body. A second pin hole is formed in the female joint in a radially penetrating mode, and the female joint sleeves the male joint of another adjacent mast section device. The pin bodies are used for passing through the first pin hole and the second pin hole so as to connect two adjacently arranged mast section devices. Reinforcing plates on the outer side of the female joint are omitted, so that the problem of a complex manufacturing process of the reinforcing plates is fundamentally solved. In addition, arrangement of rollers of a climbing frame is not restricted, and therefore design of a climbing system is facilitated.

Description

Standard section device and tower crane

This application claims the priority of the Chinese patent application with the application number 202210037599.0 and the title of the invention "Standard Section Device and Tower Crane" submitted to the China Patent Office on January 13, 2022, the entire contents of which are incorporated by reference in the application.

technical field

The application belongs to the technical field of construction machinery, and in particular relates to a standard section device and a tower crane.

Background technique

Tower crane is a commonly used hoisting equipment in construction engineering operations. The main part of the tower body of the tower crane is composed of standard sections stacked from bottom to top. At present, the main chords of the circular pipe standard sections on the market are mainly connected by pin shafts. The pin holes at the joints of the main chords will cause local strength to be weakened. In order to reinforce the parts, generally A reinforcing plate is set outside the connection of the main chord, but in order to match the standard section of the round pipe, the shape of the reinforcing plate is irregular, the manufacturing process is complicated, and the setting of the reinforcing plate will have a certain impact on the design of the climbing frame and the rollers of the climbing frame The limitation restricts the development of climbing system.

technical solution

In view of the above-mentioned defects or deficiencies, the application provides a standard section device and a tower crane, aiming at solving the technical problems that the reinforcing plate manufacturing process is complicated and the setting of the reinforcing plate restricts the development of the climbing system.

In order to achieve the above purpose, the application provides a standard joint device, wherein the standard joint device includes a main chord body, a male joint, a female joint and a pin body; the main chord body is set as a hollow circular tube; the male joint is set on the main At the first end of the chord body, the male joint is provided with a radially through first pin hole; the female joint is set as a hollow tube and connected to the second end of the main chord body, and the outer diameter of the female joint is the same as the main chord The outer diameters of the body are equal, the inner diameter of the female joint is smaller than the inner diameter of the main chord body, the second pin hole is opened radially through the female joint, and the female joint is sleeved on the male joint of another standard joint device arranged adjacently ; The pin shaft body is used to pass through the first pin hole and the second pin hole to connect two adjacent standard section devices.

In the embodiment of the present application, the female joint includes a welding part, a diameter reducing part and a body part connected in sequence, the free end of the welding part is welded to the second end of the main chord body, and the inner diameter of the diameter reducing part faces from the welding part The body portion is gradually reduced, and a second bolt hole is opened on the body portion.

In the embodiment of the present application, a step for accommodating the second end of the main chord body is formed outside the free end of the welding portion, and the width of the step is equal to the wall thickness of the main chord body.

In the embodiment of the present application, the number of pin shaft bodies used to connect the male joint and the female joint is two.

In the embodiment of the present application, 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.

In the embodiment of the present application, a back pin box is further provided on the female joint, and the back pin box is located below the second pin hole.

In the embodiment of the present application, a spiral oil groove is opened on the pin shaft body.

In the embodiment of the present application, both ends of the pin shaft body are formed with guiding tapered surfaces.

In the embodiment of the present application, a step body is provided on the web side of the main chord body.

In order to achieve the above purpose, the present application also provides a tower crane, wherein the tower crane includes the above-mentioned standard section device.

Beneficial effect

When the above-mentioned standard joint device is used, the first end of the main chord body of the standard joint device is provided with a male joint, and the second end is provided with a female joint. Since the female joint is set as a hollow circular tube, one of the standard joint devices The female joint can be sleeved on the male joint of another standard joint device arranged adjacently, and the two second pin holes radially penetrating on the female joint can be connected with the first pin holes radially penetrating on the male joint Align so that the pin shaft body passes through the first pin hole and the two second pin holes to connect two adjacent standard joint devices. At the same time, due to the outer diameter of the female joint and the main chord The outer diameter of the body is equal, and the inner diameter of the female joint is smaller than the inner diameter of the main chord, so that the wall thickness of the female joint is greater than the wall thickness of the main chord body, which plays a role of reinforcement. It fundamentally solves the problem of complex manufacturing process of the reinforcing plate. In addition, the thickening direction is on the inner side, and there will be no restrictions on the arrangement of the climbing frame and the rollers of the climbing frame, which is beneficial to the design of the climbing system.

Description of drawings

The accompanying drawings are used to provide an understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation to the present application. In the attached picture:

Fig. 1 is a schematic structural view of a standard section device according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram of a female joint according to an embodiment of the present application;

Fig. 3 is another structural schematic diagram of a standard section device according to an embodiment of the present application;

Fig. 4 is another structural schematic diagram of a standard section device according to an embodiment of the present application;

Fig. 5 is a schematic structural view of A-A direction in Fig. 4;

Fig. 6 is a schematic structural diagram of B-B direction in Fig. 4 .

Explanation of reference signs

11	主弦杆本体 main chord body	22	公接头male connector
21twenty one	第一插销孔 first pin hole	33	母接头 female connector
3131	焊接部 welding part	3232	变径部 Reducer
3333	本体部 Body	3434	第二插销孔 Second pin hole
3535	台阶the steps	44	销轴体 Pin body
4141	螺旋油槽 Spiral oil tank	4242	导向锥面guide cone
55	第一密封板first sealing plate	66	托销盒 Pin box
6161	托板 pallet	6262	止挡板 stop plate
77	踏步体Stepping body	88	斜腹杆Diagonal rod

Detailed ways

Specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present application, not to limit the present application.

The standard section device according to the present application will be described below with reference to the accompanying drawings.

As shown in Figures 1 and 2, a standard section device is provided in an embodiment of the present application, wherein the standard section device includes:

The main chord body 1 is set as a hollow tube;

The male joint 2 is arranged at the first end of the main chord body 1, and the male joint 2 is provided with a radially through first pin hole 21;

The female joint 3 is set 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, and the inner diameter of the female joint 3 is smaller than the main chord body 1 The inner diameter of the female joint 3 is radially opened with a second pin hole 34, and the female joint 3 is sleeved on the male joint 2 of another standard section device arranged adjacently; and

The pin 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.

When the above-mentioned standard joint device is used, the first end of the main chord body 1 of the standard joint device is provided with a male joint 2, and the second end is provided with a female joint 3. Since the female joint 3 is set as a hollow tube, one of the standard The female joint 3 on the joint device can be sleeved on the male joint 2 of another standard joint device arranged adjacently, and the second pin hole 34 provided radially through the female joint 3 can be connected to the upper diameter of the male joint 2 Align to the through first pin hole 21, so that the pin shaft body 4 passes through the first pin hole 21 and the second pin hole 34 to connect two adjacent standard joint devices, and at the same time, due to The outer diameter of the female joint 3 is equal to the outer diameter of the main chord body 1, and the inner diameter of the female joint 3 is smaller than the inner diameter of the main chord, so that the wall thickness of the female joint 3 is greater than the wall thickness of the main chord body 1, thereby strengthening The effect of canceling the reinforcing plate on the outside of the female joint 3 fundamentally solves the problem of the complicated manufacturing process of the reinforcing plate. In addition, the thickening direction is on the inside, and it will not affect the arrangement of the climbing frame and the rollers of the climbing frame. Limits, thus facilitating the design of the climbing system.

It should be noted that since the female joint 3 set as a hollow tube can be sleeved on the male joint 2, that is, the outer diameter of the male joint 2 should be set to be smaller than the inner diameter of the female joint 3, and the first pin is provided on the male joint 2 Part of the hole 21 may be configured as a cylindrical solid body. Specifically, the male joint 2 may include a second sealing plate welded to the first end of the main chord body 1 and used to close the main chord body 1 configured as a hollow tube, and a joint column arranged on the second sealing plate, The joint post can be set as a solid cylindrical body with an outer diameter smaller than the inner diameter of the female joint 3 , and a first pin hole 21 radially penetrating the joint post is opened on the joint post.

In the embodiment of the present application, the female joint 3 includes a welding part 31, a diameter reducing part 32 and a body part 33 connected in sequence, the free end of the welding part 31 is welded to the second end of the main chord body 1, and the diameter reducing part The inner diameter of 32 gradually decreases from the welding portion 31 to the main body 33 , and the second pin hole 34 is defined on the main body 33 . Since the outer diameter of the female joint 3 is equal to the outer diameter of the main chord body 1, and the inner diameter of the welded portion 31 is larger than the inner diameter of the main body, the wall thickness of the welded portion 31 is smaller than the wall thickness of the main body portion 33, so that the main chord body The wall thickness difference between 1 and the welding part 31 is small, which is beneficial to the stability after welding.

In the embodiment of the present application, a step 35 for accommodating the second end of the main chord body 1 is formed outside the free end of the welding portion 31 , and the width of the step 35 is equal to the wall thickness of the main chord body 1 . That is, the wall thickness of the welding portion 31 can be set to be greater than the wall thickness of the main chord body 1 , and the step 35 formed outside can be overlapped by the second end of the main chord body 1 to facilitate welding positioning. At the same time, 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 smaller than the wall thickness of the main chord body 1, and then the welding part 31 is penetrated to finally make the step 35 The width is equal to the wall thickness of the main chord body 1 , and the inner wall of the main chord body 1 can abut against the outer wall of the welding portion 31 above the step 35 to play a supporting role.

As shown in Figure 3, in the embodiment of the present application, the number of pin shaft bodies 4 used to connect the male joint 2 and the female joint 3 is two, and correspondingly, two The first pin hole 21 and the female joint 3 are correspondingly provided with two radially penetrating second pin holes 34, and the two first pin holes 21 and the two second pin holes 34 are communicated one by one to form two channels , the two pin shaft bodies 4 are correspondingly inserted in the two passages to achieve the purpose of ensuring the stability of the connection.

Referring to Fig. 4, in the embodiment of the present application, 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, and the first sealing plate 5 is used to seal the main chord body 1 cavity to prevent corrosion of the cavity of the main chord. The first sealing plate 5 can be arranged on the inner wall of the main chord body 1 close to the female joint 3 , or on the inner wall of the reduced diameter portion 32 of the female joint 3 .

Referring to FIG. 4 and FIG. 5 , in the embodiment of the present application, a back pin box 6 is further provided on the female joint 3 , and the back pin box 6 is located below the second pin hole 34 . The quality of pin shaft body 4 is bigger, when pin shaft body 4 is squeezed in the first latch hole 21 and the second latch hole 34, pin shaft body 4 can be placed on the bracket box 6 and knocked, to be able to Reduce the labor intensity of operators. Specifically, the bracket box 6 includes a bracket 61 arranged directly below the second pin hole 34 and two stopper plates 62 arranged at opposite ends of the bracket 61, so that the pin shaft body 4 can be placed on the bracket 61 Knocking on the top, the two stopper plates 62 can play a stop role and can guide the knocking direction at the same time.

As shown in FIG. 5 , in the embodiment of the present application, a spiral oil groove 41 may be opened on the pin shaft body 4 . The arrangement of the spiral oil groove 41 facilitates the storage of lubricating oil, thereby preventing rust and facilitating the installation of the pin shaft body 4 .

In the embodiment of the present application, both ends of the pin shaft body 4 are formed with guide tapered surfaces 42 . The arrangement of the guide cone surface 42 makes it possible to strike the pin axle body 4 from both end faces of the pin axle body 4 when the pin axle body 4 is installed, and to strike from the two guide cone surfaces 42 .

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 set away from the rollers, and the opening directions of the first pin hole 21 and the second pin hole 34 are also set away from the rollers.

Please refer to FIG. 4 and FIG. 6 again, in the embodiment of the present application, a step body 7 is provided on the web side of the main chord body 1 . The web side of the main chord body 1 is the side where the standard section web is set on the main chord body 1, that is, the step body 7 and the standard section web are arranged on the same side of the main chord body 1, and the step body 7 can avoid the setting of the rollers on the outside, so that the step body 7 can remove the restriction to the rollers of the climbing frame. In addition, the step body 7 is arranged on the web side of the main chord body 1, so that the overall dimension of the entire standard joint device is reduced, which is convenient for transportation.

Please refer to Fig. 4 again, a standard section device can be provided with two sets of V-shaped webs between two adjacent main chord bodies 1, and each set of V-shaped webs is composed of two oblique webs 8, namely Four diagonal rods 8 are arranged between the two main chord bodies 1 .

In order to achieve the above purpose, the present application also provides a tower crane, wherein the tower crane includes the above-mentioned standard section device. Since all the technical solutions of the above-mentioned embodiments are used for the tower crane, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

In the description of the present application, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A standard section device, wherein the standard section device comprises:

The main chord body (1) is set as a hollow tube;

The male joint (2) is arranged at the first end of the main chord body (1), and the first pin hole (21) radially penetrated is opened on the male joint (2);

A female joint (3), which is set as a hollow tube and connected to the second end of the main chord body (1), the outer diameter of the female joint (3) is the same as the outer diameter of the main chord body (1) The diameters are equal, the inner diameter of the female joint (3) is smaller than the inner diameter of the main chord body (1), and a second pin hole (34) is opened radially through the female joint (3). The joint (3) is sleeved on the said male joint (2) of another said standard joint device arranged adjacently; and

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.
The standard joint device according to claim 1, wherein the female joint (3) includes a welding part (31), a diameter reducing part (32) and a body part (33) connected in sequence, and the welding part (31 ) is welded to the second end of the main chord body (1), and the inner diameter of the reducing portion (32) gradually decreases from the welding portion (31) toward the body portion (33) , the second pin hole (34) is opened on the body part (33).
The standard joint device according to claim 2, wherein a step (35) for accommodating the second end of the main chord body (1) is formed on the outer side of the free end of the welding part (31), said The width of the step (35) is equal to the wall thickness of the main chord body (1).
The standard joint device according to claim 1, wherein the number of the pin shaft bodies (4) used to connect the male joint (2) and the female joint (3) is two.
The standard joint device according to claim 1, wherein a first sealing plate 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) (5).
The standard joint device according to claim 1, wherein, the female joint (3) is further provided with a pin box (6), and the pin box (6) is located in the second pin hole (34) below.
The standard joint device according to claim 1, wherein a spiral oil groove (41) is opened on the pin shaft body (4).
The standard joint device according to claim 1, wherein both ends of the pin shaft body (4) are formed with guiding tapered surfaces (42).
The standard joint device according to claim 1, wherein a step body (7) is provided on the web side of the main chord body (1).
A tower crane, wherein the tower crane includes a standard section device, and the standard section device includes:

The main chord body (1) is set as a hollow tube;

The male joint (2) is arranged at the first end of the main chord body (1), and the first pin hole (21) radially penetrated is opened on the male joint (2);

A female joint (3), which is set as a hollow tube and connected to the second end of the main chord body (1), the outer diameter of the female joint (3) is the same as the outer diameter of the main chord body (1) The diameters are equal, the inner diameter of the female joint (3) is smaller than the inner diameter of the main chord body (1), and a second pin hole (34) is opened radially through the female joint (3). The joint (3) is sleeved on the said male joint (2) of another said standard joint device arranged adjacently; and

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.
The tower crane according to claim 10, wherein, the female joint (3) comprises a welding part (31), a reducing part (32) and a body part (33) connected in sequence, and the welding part (31 ) is welded to the second end of the main chord body (1), and the inner diameter of the reducing portion (32) gradually decreases from the welding portion (31) toward the body portion (33) , the second pin hole (34) is opened on the body part (33).
The tower crane according to claim 11, wherein a step (35) for accommodating the second end of the main chord body (1) is formed on the outer side of the free end of the welding part (31), said The width of the step (35) is equal to the wall thickness of the main chord body (1).
The tower crane according to claim 10, wherein the number of the pin shaft bodies (4) for connecting the male joint (2) and the female joint (3) is two.
The tower crane according to claim 10, wherein a first sealing plate 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) (5).
The tower crane according to claim 10, wherein a back pin box (6) is further arranged on the female joint (3), and the back pin box (6) is located in the second pin hole (34) below.
The tower crane according to claim 10, wherein a spiral oil groove (41) is opened on the pin shaft body (4).
The tower crane according to claim 10, wherein, both ends of the pin shaft body (4) are formed with guiding tapered surfaces (42).
The tower crane according to claim 10, wherein a step body (7) is provided on the web side of the main chord body (1).