CN219567374U

CN219567374U - Tower crane lower support, tower crane rotation assembly and tower crane

Info

Publication number: CN219567374U
Application number: CN202321212599.6U
Authority: CN
Inventors: 郑海; 王芸鹏; 钱建军
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Zoomlion Construction Crane Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Zoomlion Construction Crane Co Ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-08-22
Anticipated expiration: 2033-05-18

Abstract

The utility model discloses a tower crane lower support, a tower crane rotation assembly and a tower crane, and relates to the technical field of tower cranes. The tower crane lower support, the tower crane rotation assembly and the tower crane are simple and reasonable in structure and high in structural strength and integration level.

Description

Tower crane lower support, tower crane rotation assembly and tower crane

Technical Field

The utility model relates to the technical field of tower cranes, in particular to a tower crane lower support, a tower crane rotary assembly and a tower crane.

Background

In the tower crane, the lower support is an important connecting part between the upper support and the tower body, and the lower support is connected with the upper support through a slewing bearing. Along with the continuous optimization of the structure, most of the upper and lower supports and the slewing bearings of the tower crane are integrated into a slewing body, namely, the slewing body is assembled and transported together, so that the cost is saved. Generally, the upper support is provided with a cab platform and an electric control cabinet platform, so that the whole installation structure of the tower crane is complex, and the integration level is low.

Disclosure of Invention

The utility model aims to overcome the technical problems and provide a tower crane lower support, a tower crane rotation assembly and a tower crane.

In order to achieve the above object, the present utility model provides a tower crane lower support, comprising:

the upper cover plate is provided with a middle opening;

the upper end part of the surrounding barrel is penetrated in the middle opening;

the main strings are arranged on the outer peripheral side of the surrounding cylinder at equal circumferential intervals, are tubular, and have axes parallel to the axis of the surrounding cylinder;

the rib plates are arranged between the surrounding cylinder and the main chord and are respectively connected with the surrounding cylinder, the main chord and the upper cover plate; and

the upper cover plate, the rib plates and the main strings are obliquely cut downwards from the upper cover plate and outwards along the radial direction of the surrounding cylinder respectively, and the rib plates are connected with the upper cover plate, the rib plates and the main strings respectively.

Optionally, the main chord may be connected to the enclosure through two rib plates, where the two rib plates are respectively parallel to the axis of the main chord and are axisymmetrically arranged relative to the axis of the main chord.

Further, the tower crane lower support can further comprise a lower cover plate connected to the lower end part of the enclosure, the rib plates and the main strings are respectively connected with the lower cover plate and extend downwards to form a sealed support inner cavity together with the upper cover plate, the wing plates, the two rib plates, the main strings, the enclosure and the lower cover plate.

Further, the wing panels may extend downwardly and outwardly along the panel face and form a panel ledge on the gusset and main chord.

In some embodiments, the wing plate can be in an inverted trapezoid shape with a wider upper part and a narrower lower part, and the two ends of the lower edge of the wing plate are provided with chamfers, or the lower edge of the wing plate is in an arc shape.

In addition, the included angle between the plate surfaces of two rib plates connected to the same main chord can be more than 50 degrees and less than 70 degrees.

In addition, the thickness of the wing plate may be smaller than the thickness of the upper cover plate.

Optionally, a pin shaft hole for connecting with the tower body can be formed in the main chord;

and/or the included angle between the plane of the wing plate and the plane of the upper cover plate is larger than 20 degrees and smaller than 40 degrees.

The utility model also provides a tower crane rotary assembly, which comprises:

a slewing bearing;

the lower support of the tower crane is connected below the slewing bearing; and

and the tower crane upper support is pivotally connected above the slewing bearing.

The utility model also provides a tower crane, which comprises the tower crane rotation assembly.

The tower crane lower support comprises an upper cover plate, a surrounding barrel, a plurality of main strings, a plurality of rib plates and a plurality of wing plates, wherein the upper cover plate is provided with a middle opening, the upper end part of the surrounding barrel is arranged in the middle opening in a penetrating manner, the main strings are circumferentially arranged on the outer peripheral side of the surrounding barrel at equal intervals, the main strings are tubular, the axes of the main strings are parallel to the axes of the surrounding barrel, the rib plates are arranged between the surrounding barrel and the main strings and are respectively connected with the surrounding barrel, the main strings and the upper cover plate, the rib plates and the main strings are respectively beveled downwards from the upper cover plate and outwards in the radial direction of the surrounding barrel correspondingly, and the wing plates are respectively connected with the upper cover plate, the rib plates and the main strings. Therefore, compared with the tower crane lower support in the prior art, the tower crane lower support can reduce the height of the main chord on the basis of keeping the original structural strength. When the revolving body is integrated, the position design of the cab platform can be more flexible, namely, the extension length of the cab platform can be further reduced, so that the integration level of the whole installation structure of the tower crane is improved, the weight and the moment of the cab platform are reduced, the whole structure is more stable and reliable, and the manufacturing cost is reduced.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 shows a schematic diagram of a prior art tower crane swing assembly and cab platform mounting structure;

FIG. 2 shows a schematic diagram of the mounting structure of the tower crane swing assembly and cab platform of the tower crane of the present utility model;

FIG. 3 is a schematic perspective view of a tower machine lower support according to an embodiment of the present utility model;

FIG. 4 shows a partial schematic view of the tower lower mount of FIG. 3 with the strakes removed;

FIG. 5 illustrates a partial cross-sectional view of the tower machine lower mount of FIG. 3 from a top view;

FIG. 6 illustrates a front view of the tower machine lower mount of FIG. 3;

fig. 7 shows a schematic view of a part of the tower crane lower mount of fig. 3 at a forty-five degree side view angle.

Description of the reference numerals

100. Upper cover plate of lower support 101 of tower crane

102. Main chord of enclosure 103

1031. Pin shaft hole 104 rib plate

105. Wing 1051 plate eave

106. Lower cover plate 200 slewing bearing

300. Cab platform of tower crane upper support 400

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions. The terms "front" and "rear" refer to the positional relationship of each part of the product with respect to the angle of use of the user, and the side closer to the user is "front" and the side farther from the user is "rear".

In the prior art, the upper support is provided with a cab platform and an electric control cabinet platform, so that the whole installation structure of the tower crane is complex, and the integration level is not high.

In view of this, in order to further simplify the overall structure of the tower crane and to increase the integration level of the tower crane, the inventors of the present utility model have continuously studied and found that, as shown in the prior art tower crane structure of fig. 1, since the upper support is provided with the cab platform and the electric control cabinet platform, the cab platform on the upper support is easily interfered with the edge of the lower support during design according to the limitations of road transportation, truck height, etc., and sometimes structural limitations cause the integration level of the revolving body to be reduced or the overall structure to be more complex. Therefore, the inventor of the utility model provides a novel tower crane lower support, a tower crane rotation assembly and a tower crane, and the tower crane lower support, the tower crane rotation assembly and the tower crane are simple and reasonable in structure, high in structural strength and high in integration level.

The tower crane lower support 100 comprises an upper cover plate 101, a surrounding barrel 102, a plurality of main chords 103, a plurality of rib plates 104 and a plurality of wing plates 105. The upper cover plate 101 is provided with a middle opening, the upper end part of the surrounding barrel 102 is penetrated in the middle opening, a plurality of main strings 103 are circumferentially arranged on the outer peripheral side of the surrounding barrel 102 at intervals, the main strings 103 are tubular, the axes of the main strings are parallel to the axes of the surrounding barrel 102, a plurality of rib plates 104 are arranged between the surrounding barrel 102 and the main strings 103 and respectively connect the surrounding barrel 102, the main strings 103 and the upper cover plate 101, a plurality of wing plates 105 respectively chamfer the upper cover plate 101, the rib plates 104 and the main strings 103 downwards from the upper cover plate 101 and outwards along the radial direction of the surrounding barrel 102, and the wing plates 105 are respectively connected with the upper cover plate 101, the rib plates 104 and the main strings 103.

It can be seen that, compared with the tower crane lower support of the prior art, the tower crane lower support 100 of the utility model is additionally provided with the wing plate structure, the wing plate 105 is beveled to the upper cover plate 101, the rib plate 104 and the main chord 103, thus reducing the height of the main chord 103. And, through calculation, the wing plate structure is additionally arranged on the tower crane lower support 100, so that the stress distribution, the rigidity and the fatigue of the whole structure of the tower crane lower support 100 are not greatly influenced. In other words, the tower crane lower support of the utility model can reduce the height of the main chord 103 on the basis of maintaining the original structural strength. So, when the solid of revolution is integrated, the position design of cab platform can be more nimble, and the extension length of cab platform can further reduce promptly, like this, has not only improved tower crane's overall installation structure's integrated level, has still alleviateed cab platform's weight and moment, also effectively avoids tower crane lower support to cause the interference to cab platform or other mounting structure for overall structure is more reliable and stable, has also reduced manufacturing cost simultaneously.

Specifically, as shown in fig. 2, 3, 4, 5, 6, and 7, four main strings 103 are circumferentially arranged at equal intervals on the outer peripheral side of the enclosure 102, each main string 103 is connected to the enclosure 102 by two rib plates 104, and the two rib plates 104 are respectively parallel to the axis of the main string 103 and are axisymmetrically arranged with respect to the axis of the main string 103. Of course, the present utility model is not limited thereto, and the number of the rib plates 104 connected between each main chord 103 and the skirt 102 may be set according to actual design strength requirements, for example, 3 pieces, 4 pieces, or the like may be provided. The number of main strings 103 may also be set according to actual design requirements.

In addition, since the wing plate 105 bevels the upper cover plate 101, the area of the upper cover plate 101 of the present utility model is reduced compared to that of the upper cover plate in the related art. In addition, the thickness of the wing plate 105 can be set smaller than that of the upper cover plate 101, that is, the additionally-arranged wing plate 105 can be in a thinner specification than that of the upper cover plate 101, so that the overall weight of the lower support 100 of the tower crane can be reduced, and the manufacturing cost can be saved. Alternatively, the wing plate 105 can also adopt the surplus waste material cut from the original upper cover plate 101, so that the waste of production materials is reduced.

Further, the tower crane lower support 100 may further include a lower cover 106 connected to the lower end of the enclosure 102, and the rib plates 104 and the main chord 103 are respectively connected to the lower cover 106 and extend downward from the lower cover 106, and the upper cover 101, the wing plates 105, the two rib plates 104, the main chord 103, the enclosure 102 and the lower cover 106 jointly define a sealed support cavity. Specifically, as shown in fig. 4, 5, 6 and 7, each main chord 103 forms a support cavity with the enclosure 102, the two rib plates 104, the upper cover plate 101 and the lower cover plate 106. Because the wing plate 105 is beveled to the upper cover plate 101, the rib plate 104 and the main chord 103 from the same plane, the wing plate 105 can be flatly paved on the upper end surfaces of the upper cover plate 101, the rib plate 104 and the main chord 103, and butt welding can be carried out on the joint between the wing plate 105 and the upper cover plate 101, the rib plate 104 and the main chord 103 to ensure the tightness of the inner cavity of the support, so that water inflow and corrosion conditions in the structure are prevented.

Further, as shown in fig. 3, 6 and 7, the wing 105 may extend downwardly and outwardly along the panel surface and form a ledge 1051 on the gusset 104 and the major chord 103. Therefore, the main chord 103, the rib plates 104 and the inner cavity of the support below the wing plates 105 can be covered, the waterproof performance of the lower support 100 of the tower crane is improved, and the water inflow and corrosion conditions in the structure are prevented.

Alternatively, as shown in fig. 3, the lower cover plate 106 may extend outward along the radial direction of the enclosure 102 to connect with the outer peripheral wall of the enclosure 102, the outer side surface of the rib plate 104, and the outer peripheral wall of the main chord 103, so that the overall structural strength of the tower crane lower support 100 may be further improved, and more stable and reliable.

Alternatively, as shown in fig. 5, the wing plate 105 may be in an inverted trapezoid shape with a wide upper part and a narrow lower part, so that the structure of the tower crane lower support 100 is simpler and more reasonable, interference with other components is reduced, and waste of plates and weight of the whole machine are reduced.

In some embodiments, the lower edges of the wing plates 105 are provided with chamfers at both ends, or the lower edges of the wing plates 105 are arc-shaped, so that the arrangement of sharp corners can be reduced, and the safety of production operation is improved.

In some embodiments, to ensure the overall structural strength of the tower lower support 100, the included angle between the faces of two rib plates 104 connected to the same main chord 103 is greater than 50 ° and less than 70 °. Preferably, the included angle between the faces of two rib plates 104 connected to the same main chord 103 is 60 °.

Alternatively, as shown in fig. 3, the main chord 103 may be provided with a pin hole 1031 for connection with the tower body.

Optionally, the angle between the plane of the wing 105 and the plane of the upper cover plate 101 is greater than 20 ° and less than 40 °. Preferably, the included angle between the plane where the wing plate 105 is located and the plane where the upper cover plate 101 is located is 30 degrees, so that the overall structural strength of the tower crane lower support 100 and the integration level of the overall installation structure of the tower crane can be better considered.

Further, the utility model also provides a tower crane slewing assembly, which comprises the slewing bearing 200, the tower crane lower support 100 and the tower crane upper support 300, wherein the tower crane lower support 100 is connected below the slewing bearing 200, and the tower crane upper support 300 is pivotally connected above the slewing bearing 200.

Still further, the utility model also provides a tower crane comprising the tower crane slewing assembly. As shown in fig. 2, the tower crane further includes a cab platform 400, where the cab platform 400 is disposed at a side portion of the tower crane upper support 300, and since the tower crane lower support 100 of the present utility model is additionally provided with a wing plate structure, the wing plate 105 is inclined to the upper cover plate 101, the rib plate 104 and the main chord 103, the height of the main chord 103 is reduced, and the extension length of the cab platform 400 is reduced, so that the integration level of the integral mounting structure of the tower crane is improved, and the weight and moment of the cab platform 400 are reduced, so that the integral structure is more stable and reliable, and the manufacturing cost is reduced.

In summary, the utility model provides a novel tower crane lower support, a tower crane rotation assembly and a tower crane, which have simple and reasonable structure, high structural strength and integration level and low manufacturing cost.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. A tower machine sub-mount, characterized in that the tower machine sub-mount (100) comprises:

an upper cover plate (101) provided with a middle opening;

the upper end part of the surrounding cylinder (102) is penetrated into the middle opening;

a plurality of main strings (103) arranged at equal circumferential intervals on the outer circumferential side of the skirt (102), the main strings (103) being tubular and having an axis parallel to the axis of the skirt (102);

a plurality of rib plates (104) which are arranged between the surrounding cylinder (102) and the main chord (103) and are respectively connected with the surrounding cylinder (102), the main chord (103) and the upper cover plate (101); and

and a plurality of wing plates (105) which are respectively beveled from the upper cover plate (101) downwards and outwards along the radial direction of the surrounding cylinder (102) and are respectively connected with the upper cover plate (101), the rib plates (104) and the main chord (103), wherein the wing plates (105) are respectively connected with the upper cover plate (101), the rib plates (104) and the main chord (103).

2. The tower crane lower support according to claim 1, wherein the main chord (103) is connected with the enclosure (102) through two rib plates (104), and the two rib plates (104) are respectively parallel to the axis of the main chord (103) and are axially symmetrically arranged relative to the axis of the main chord (103).

3. The tower crane lower mount according to claim 2, wherein the tower crane lower mount (100) further comprises a lower cover plate (106) connected to a lower end of the enclosure (102), the rib plate (104) and the main chord (103) are connected to the lower cover plate (106) respectively and extend downwards out of the lower cover plate (106), and the upper cover plate (101), the wing plate (105), two rib plates (104), the main chord (103), the enclosure (102) and the lower cover plate (106) together define a sealed mount cavity.

4. A tower crane lower support according to claim 3, wherein the flanges (105) extend downwardly and outwardly along the deck and are formed with a flange ledge (1051) on the gusset (104) and the main chord (103);

and/or, the lower cover plate (106) can extend outwards along the radial direction of the surrounding cylinder (102) so as to be connected with the peripheral wall of the surrounding cylinder (102), the outer side surface of the rib plate (104) and the peripheral wall of the main chord (103).

5. The tower crane lower support according to claim 2, wherein the wing plate (105) is in an inverted trapezoid shape with a wide upper part and a narrow lower part, and both ends of the lower edge of the wing plate (105) are provided with chamfers, or the lower edge of the wing plate (105) is in an arc shape.

6. Tower crane lower support according to claim 2, characterized in that the included angle between the faces of two of said webs (104) connected to the same main chord (103) is greater than 50 ° and less than 70 °.

7. The tower bottom bracket according to claim 1, wherein the thickness of the wing (105) is smaller than the thickness of the upper cover plate (101).

8. The tower crane lower support according to claim 1, wherein the main chord (103) is provided with a pin hole (1031) for connecting with a tower body;

and/or, the included angle between the plane of the wing plate (105) and the plane of the upper cover plate (101) is more than 20 degrees and less than 40 degrees.

9. A tower crane swivel assembly, the tower crane swivel assembly comprising:

a slewing bearing (200);

the tower crane lower mount (100) according to any of claims 1 to 8, connected below the slewing bearing (200); and

and the tower crane upper support (300) is pivotally connected above the slewing bearing (200).

10. A tower crane, characterized in that it comprises a tower crane slewing assembly according to claim 9.