CN215479334U

CN215479334U - Cargo boom and tower crane

Info

Publication number: CN215479334U
Application number: CN202121109940.6U
Authority: CN
Inventors: 孙旭国; 王波; 徐�明
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: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-11
Anticipated expiration: 2031-05-21

Abstract

The utility model belongs to the technical field of construction machinery, and particularly relates to a crane boom and a tower crane. The arm section body comprises a plurality of arm sections which are sequentially spliced along the arm length direction, and the arm tip is continuously connected to the tail arm section of the arm section body along the arm length direction and comprises an arm tip frame, an installation ear plate, an anti-twisting device and a limiting supporting plate. The mounting lug plate is arranged at the extending tail end of the arm tip frame, one end of the torsion-proof device is pivotally connected to the bottom end part of the mounting lug plate, and the limiting support plate is arranged on the mounting lug plate and used for limiting the pivoting end of the torsion-proof device at a set pivoting holding position and supporting the torsion-proof device at the pivoting holding position. Wherein, spacing backup pad can hinder the device of preventing turning round to rotate around pivot joint because of gravity for the device of preventing turning round is located pivot holding position, avoids frequently pulling the great device of preventing turning round of weight of wire rope in the installation, improves convenience and security in the installation.

Description

Cargo boom and tower crane

Technical Field

The utility model relates to the technical field of construction machinery, in particular to a crane boom and a tower crane

Background

The tower crane comprises a tower body, a balance arm, a cargo boom and the like, wherein the cargo boom is formed by splicing a plurality of boom sections. And an anti-twisting device connected with a steel wire rope is arranged at the tail end of the crane boom and is used for preventing the steel wire rope from twisting and winding. However, with the development of the construction industry, the hoisting requirement on the tower crane is higher and higher, and then the steel wire rope is thicker and thicker, and the volume and the weight of the anti-twisting device matched with the steel wire rope are larger and larger, so that the installation is difficult.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or shortcomings in the prior art, the utility model provides a crane boom and a tower crane, wherein a limiting support plate can prevent an anti-torsion device from rotating due to gravity, so that the convenience and the safety in installation are improved.

To achieve the above object, a first aspect of the present invention provides a boom including:

the arm section body comprises a plurality of arm sections which are sequentially spliced along the arm length direction; and

the arm point, continue to connect in the tail arm festival of arm festival body and include along the arm length direction:

an arm tip frame;

the mounting lug plate is arranged at the extending tail end of the arm tip frame;

one end of the anti-twist device is pivotally connected to the bottom end part of the mounting lug plate;

and the limiting support plate is arranged on the mounting lug plate and is used for limiting the pivoting end of the torsion-proof device at a set pivoting and holding position and supporting the torsion-proof device at the pivoting and holding position.

Optionally, one end of the anti-twist device is a pivot end and the other end is a traction link end, and in the pivot holding position, the traction link end is closer to the leading arm segment of the arm segment body relative to the pivot end.

Optionally, the arm tip carrier comprises:

the top end and the bottom end of the arm tip vertical rod are respectively connected with the tail arm section of the arm section body;

the arm tip bottom rod extends from the bottom end of the arm tip vertical rod along the arm length direction; and

the arm tip inclined rod is connected to the top end of the arm tip vertical rod and the tail end of the arm tip bottom rod;

wherein, arm point montant, arm point sill bar and arm point down tube connect into right angled triangle support, and the installation otic placode is installed at the intersection link of arm point sill bar and arm point down tube.

Optionally, the bottom end of the mounting ear plate is formed with a U-shaped groove with a downward opening, the pivot end extends into the U-shaped groove, and the limiting support plate is blocked at the opening end of the U-shaped groove.

Optionally, the anti-twist device is parallel to the arm tip bottom bar.

Optionally, the arm section includes arm section concatenation unit that can splice each other, and arm section concatenation unit includes:

a cell assembly comprising:

a chord member;

the connecting ear plates are positioned on one side of the chord and are arranged along the length direction, and the vertical distance between each connecting ear plate and the chord is the same;

the web members are connected between the connecting ear plates and the chord members; and

and the horizontal rod is used for connecting the two unit assemblies which are arranged in parallel at intervals.

Optionally, the ends of both web members are connected to the same connecting ear plate to form a web member assembly, which is arranged along the length direction of the chord member and makes any two adjacent web members arranged in a V-shape.

Optionally, the horizontal rod includes a first horizontal rod and a second horizontal rod, two ends of the first horizontal rod are respectively connected with the two chords arranged in parallel at intervals, and two ends of the second horizontal rod are respectively connected with the two engaging lug plates arranged in parallel at intervals.

Optionally, the arm section splicing unit further includes an inclined strut located between the first horizontal rod and the second horizontal rod, and two ends of the inclined strut are respectively connected with the chord and the connecting ear plate which are diagonally arranged.

The utility model provides a tower crane in a second aspect, which comprises the cargo boom.

The boom comprises a boom tip provided with an anti-twist device, the anti-twist device is connected to a boom tip frame through an installation lug plate, the anti-twist device is in pivot connection with the installation lug plate, a limiting support plate is arranged at the bottom end of the installation lug plate, the limiting support plate can prevent the anti-twist device from rotating around a pivot connection position due to gravity, so that the anti-twist device is located at a pivot holding position, the situation that a steel wire rope frequently pulls the anti-twist device with larger weight in the installation process is avoided, and convenience and safety in the installation process are improved.

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

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a cell assembly according to an embodiment of the present invention;

FIG. 2 is a side view of an arm segment splicing unit according to an embodiment of the present invention;

FIG. 3 is a front view of an arm segment according to an embodiment of the present invention;

FIG. 4 is a side view of an arm segment according to an embodiment of the present invention;

FIG. 5 is a front view of an arm tip according to an embodiment of the present invention;

FIG. 6 is a left side view of an arm tip according to an embodiment of the present invention.

Description of reference numerals: 100. an arm section splicing unit; 200. a tip of the arm; 300. an arm section; 10. a unit component; 11. a chord member; 12. connecting the ear plates; 13. a web member; 14. a horizontal bar; 15. a diagonal brace; 21. an arm tip frame; 22. mounting an ear plate; 23. an anti-twist device; 24. a support plate; 141. a first horizontal bar; 142. a second horizontal bar; 211. a cantilever tip vertical rod; 212. a sharp arm bottom bar; 213. an arm tip diagonal rod; 231. a pivot end; 232. traction connecting end

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the utility model, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In embodiments of the utility model, where the context requires otherwise, the use of directional terms such as "upper, lower, top and bottom" is generally intended in the orientation shown in the drawings or the positional relationship of the various components in a vertical, vertical or gravitational orientation.

The utility model will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.

In a first exemplary embodiment of the utility model, a lift arm is provided that includes an arm segment body and an arm tip 200. Wherein, the arm festival body includes a plurality of arm festival 300 along the arm length direction concatenation in proper order, and arm point 200 continues to connect in the tail arm festival of arm festival body and includes arm point frame 21, installation otic placode 22, anti-twist device 23 and spacing backup pad 24 along the arm length direction. A mounting lug plate 22 is provided at the extended end of the arm tip frame 21, one end of the anti-twist device 23 is pivotally connected to the bottom end portion of the mounting lug plate 22, and a restraining support plate 24 is mounted on the mounting lug plate 22 and serves to restrain the pivotal end of the anti-twist device 23 at a set pivotal holding position and to support the anti-twist device 23 at the pivotal holding position.

As shown in fig. 5 and 6, specifically, the arm tip frame 21 is formed by splicing a plurality of straight bars, a mounting lug plate 22 is arranged at the extending end of the arm tip frame 21, the mounting lug plate 22 extends downwards, the torsion-proof device 23 is pivotally connected with the mounting lug plate 22, a limiting support plate 24 is arranged at the bottom end of the mounting lug plate 22, and the limiting support plate 24 can prevent the torsion-proof device 23 from rotating around the pivotal connection due to gravity, so that the torsion-proof device 23 is located at a pivotal holding position, the phenomenon that the steel wire rope frequently pulls the torsion-proof device 23 with a large weight in the installation process is avoided, and convenience and safety in the installation process are improved.

Further, the torsion preventing device 23 has one end being a pivot end 231 and the other end being a traction link end 232, and in the pivot holding position, the traction link end 232 is closer to the leading arm segment of the arm segment body relative to the pivot end 231.

As shown in fig. 5, in particular, the torsion preventing means 23 includes a pivot end 231 and a towing attachment end 232, the pivot end 231 is connected to the bottom end portion of the mounting lug plate 22, and the towing attachment end 232 is connected with a wire rope. Under the action of the position limiting support plate 24, the anti-twist device 23 is located in the pivot holding position, so that the traction connection end 232 points to the first arm segment of the arm segment body.

Further, a U-shaped groove opened downward is formed at the bottom end of the mounting ear plate 22, the pivot end 231 extends into the U-shaped groove, and the limit supporting plate 24 is blocked at the open end of the U-shaped groove.

In the illustrated embodiment, as shown in fig. 6, the mounting ear plate 22 comprises two flat plates connected to the arm tip frame 21 and arranged in parallel and spaced apart, the two flat plates are arranged to extend downward, the two flat plates and the straight rod on the arm tip frame 21 form a U-shaped groove opened downward, the pivot end 231 is located between the two flat plates, i.e., arranged in the U-shaped groove, and the position limiting support plate 24 is located at the bottom ends of the two flat plates, i.e., the open ends of the U-shaped groove.

In the embodiment of the present invention, the arm tip frame 21 includes an arm tip vertical rod 211, an arm tip bottom rod 212, and an arm tip diagonal rod 213. The top and the bottom of arm point montant 211 link to each other with the tail arm festival of arm festival body respectively, and arm point sill bar 212 extends along the arm length direction from the bottom of arm point montant 211, and arm point down tube 213 connects the end at the top of arm point montant 211 and arm point sill bar 212. Wherein, arm point montant 211, arm point sill bar 212 and arm point down tube 213 connect into right triangle support, and installation otic placode 22 is installed at the intersection link end of arm point sill bar 212 and arm point down tube 213.

As shown in fig. 5 and 6, in the illustrated embodiment, the arm tip vertical bar 211, the arm tip bottom bar 212 and the arm tip diagonal bar 213 are spliced to form a right triangle support, the two right triangle supports are arranged in parallel at intervals and connected by a straight bar to form an arm tip frame, and the triangle structure is stable, so that the arm tip frame 21 formed by splicing the right triangle supports has a stable structure.

Preferably, the anti-twist device 23 is parallel to the arm sharp-bottom bar 212. After the steel wire rope is installed, the steel wire rope is in a tensioned state and is parallel to the arm tip bottom rod 212, the anti-twisting device 23 is limited to be arranged in parallel to the arm tip bottom rod 212 through the limiting support plate 24, and shaking of the anti-twisting device 23 can be further reduced.

In the embodiment of the present invention, the arm segment 300 includes the arm segment splicing unit 100 that can be spliced to each other, and the arm segment splicing unit 100 includes the unit assembly 10 and the horizontal rod 14. The unit component 10 includes a chord 11, a plurality of connecting ear plates 12 and a web member 13, the connecting ear plates 12 are located on one side of the chord 11 and are arranged along the length direction, the vertical distance between each connecting ear plate 12 and the chord 11 is the same, and the web member 13 is connected between the connecting ear plates 12 and the chord 11. The horizontal bar 14 is used to connect two unit assemblies 10 arranged in parallel at a distance.

As shown in fig. 1 and 2, in particular, a plurality of connecting lugs 12 are positioned on the same straight line parallel to the chord 11, and a web 13 connects the connecting lugs 12 and the chord 11 to form the unit assembly 10. Two parallel spaced unit assemblies 10 are connected by a horizontal bar 14 to form an arm segment splicing unit 100, and a plurality of connecting ear plates 12 in the two arm segment splicing units can be butted one to form an arm segment 300. So set up, arm section 300 is formed by the concatenation of a plurality of arm section concatenation units 100, can transport the arm section concatenation unit that the size is littleer and assemble to the building site, and specially adapted large-scale tower machine, the transportation of so being convenient for.

Further, the ends of two web members 13 are connected to the same connecting lug 12 to form a web member assembly, which is arranged along the length direction of the chord and allows any two adjacent web members 13 to be arranged in a V-shape.

As shown in fig. 1, in particular, a plurality of web members 13 are disposed between the connecting ear plate 12 and the chord 11, one ends of two web members 13 are connected to the same connecting ear plate 12 to form a web member assembly, and the other ends of two web members 13 in the web member assembly are connected to the chord 11 at intervals. A plurality of web members are arranged along the length direction of the chord member 11, so that any two adjacent web members 13 are arranged in a V shape, namely, a stable triangular support structure is formed between the web members 13 and the chord member 11, and the stability of the whole unit assembly 10 is improved.

In the embodiment of the present invention, the horizontal rod 14 includes a first horizontal rod 141 and a second horizontal rod 142, two ends of the first horizontal rod 141 are respectively connected to the two chords 11 arranged in parallel and spaced apart, and two ends of the second horizontal rod 142 are respectively connected to the two connecting ear plates 12 arranged in parallel and spaced apart.

As shown in fig. 2, specifically, the two unit assemblies 10 in the arm segment splicing unit 100 are arranged in parallel at intervals, and therefore, the chord 11 and the lug plate 12 between the two unit assemblies 10 are also arranged in parallel at intervals. The first horizontal bar 141 connects the two chords 11 arranged in parallel and spaced apart, and the second horizontal bar 142 connects the two connecting ear plates 12 arranged in parallel and spaced apart, so that the two unit assemblies 10 arranged in parallel and spaced apart are firmly connected to form the reliable arm segment splicing unit 100. Of course, the number of the first horizontal bars 141 and the second horizontal bars 142 may be plural, and arranged along the length direction of the arm segment splicing unit 100 to reinforce the connection of the two unit assemblies 10.

Further, the arm section splicing unit further comprises a diagonal brace 15 located between the first horizontal rod 141 and the second horizontal rod 142, and two ends of the diagonal brace 15 are respectively connected with the chord 11 and the connecting ear plate 12 which are diagonally arranged.

As shown in fig. 2, specifically, the chord 11 and the connection ear plate 12 arranged diagonally are respectively located in the two unit assemblies 10, and therefore, the diagonal brace 15 further reinforces and connects the two unit assemblies 10.

In the embodiment of the present invention, the arm segment 300 includes two arm segment splicing units 100 spliced up and down, and the connecting ear plates 12 in the two arm segment splicing units are fixedly connected one by a pin.

As shown in fig. 3 and 4, specifically, the connecting ear plates 12 are provided with pin shaft holes, the pin shaft holes of the connecting ear plates 12 between the two arm section splicing units 100 are butted one by one, the two arm section splicing units 100 are fixedly spliced up and down by a pin shaft, and the pin shaft is adopted for fixed connection, so that the safety, reliability and low cost are achieved.

The utility model provides a tower crane, which comprises the crane arm. Because this tower machine has adopted above-mentioned jib loading boom, obviously possess all beneficial effects that above-mentioned jib loading boom brought, do not describe here in detail. The tower crane in the exemplary embodiment may comprise other components that interact with the jib or are arranged independently of the jib, the kind of which may be adapted according to the model of the tower crane.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the foregoing embodiments, various features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in further detail in the embodiments of the present invention.

In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

Claims

1. A boom, characterized in that the boom comprises:

the arm joint body comprises a plurality of arm joints (300) which are sequentially spliced along the arm length direction; and

an arm tip (200) which is continuously connected to the tail arm section of the arm section body along the arm length direction and comprises:

an arm tip holder (21);

a mounting lug plate (22) provided at an extended end of the arm tip holder (21);

an anti-twist device (23), one end of the anti-twist device (23) is pivotally connected to the bottom end part of the mounting ear plate (22);

and a limit support plate (24) mounted on the mounting lug plate (22) and used for limiting the pivoting end of the anti-torsion device (23) at a set pivoting and holding position and supporting the anti-torsion device (23) at the pivoting and holding position.

2. The jib boom of claim 1, wherein the anti-twist device (23) has one end being the pivot end (231) and the other end being a traction link end (232), the traction link end (232) being closer to the knuckle of the knuckle body than the pivot end (231) in the pivot hold position.

3. The boom of claim 1, characterized in that the boom tip carrier (21) comprises:

the top end and the bottom end of the arm tip vertical rod (211) are respectively connected with the tail arm section of the arm section body;

an arm tip bottom rod (212) extending from the bottom end of the arm tip vertical rod (211) in the arm length direction; and

the arm tip inclined rod (213) is connected to the top end of the arm tip vertical rod (211) and the tail end of the arm tip bottom rod (212);

wherein, arm point montant (211), arm point sill bar (212) with arm point down tube (213) connect into the right angled triangle support, install installation otic placode (22) arm point sill bar (212) with the intersection link of arm point down tube (213).

4. The lift arm as claimed in claim 2, wherein the bottom end of the mounting lug plate (22) is formed with a downwardly opening U-shaped slot into which the pivot end (231) extends, the limit support plate (24) sealing off the open end of the U-shaped slot.

5. The jib boom of claim 2, wherein the anti-twist device (23) is parallel to the arm tip and foot rod (212).

6. The boom of claim 1, wherein the arm segment (300) comprises segment splicing units (100) that can be spliced to each other, the segment splicing units (100) comprising:

unit assembly (10) comprising:

a chord (11);

the connecting ear plates (12) are positioned on one side of the chord (11) and are arranged along the length direction, and the vertical distance between each connecting ear plate (12) and the chord (11) is the same;

a web member (13) connected between the connecting lug plate (12) and the chord member (11); and

a horizontal bar (14) for connecting two of said unit assemblies (10) in a parallel spaced arrangement.

7. A boom according to claim 6, c h a r a c t e r i z e d in that the ends of both web members (13) are connected to the same connecting ear plate (12) to form a web member assembly, which is arranged in the length direction of the chord (11) and such that any two adjacent web members (13) are arranged in a V-shape.

8. The crane boom according to claim 6, characterized in that the horizontal rod (14) comprises a first horizontal rod (141) and a second horizontal rod (142), both ends of the first horizontal rod (141) are respectively connected with the two chords (11) which are arranged in parallel and spaced, and both ends of the second horizontal rod (142) are respectively connected with the two connecting ear plates (12) which are arranged in parallel and spaced.

9. The boom of claim 8, characterized in that the boom segment splicing unit (100) further comprises a diagonal brace (15) between the first horizontal bar (141) and the second horizontal bar (142), and both ends of the diagonal brace (15) are respectively connected with the chord (11) and the connecting ear plate (12) which are diagonally arranged.

10. A tower crane, characterized in that it comprises a jib according to any of claims 1 to 9.