CN205241109U

CN205241109U - Crew cut tower crane boom winds up and sells shaft connecting structure

Info

Publication number: CN205241109U
Application number: CN201520854492.0U
Authority: CN
Inventors: 王建军; 米成宏; 朱斌; 刘振
Original assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Current assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Priority date: 2015-10-31
Filing date: 2015-10-31
Publication date: 2016-05-18
Anticipated expiration: 2025-10-31

Abstract

The utility model discloses a crew cut tower crane boom winds up and sells shaft connecting structure, including the linking arm double ear plate I (3) of festival I (1) to and the double ear plate II (4) of linking arm festival II (2), and the round pin shaft hole that is equipped with on I, II (3, 4) of double ear plate levels up the direction, when double ear plate II (4) inserted interior division of shelves of double ear plate I (3), the round pin shaft hole on double ear plate I, II (3, 4) was passed simultaneously in flat -sale (15). The otic placode round pin shaft hole of jib loading boom upper chord butt joint has converted horizontal mode to, and the butt joint of upper chord otic placode targets in place when the two jib loading boom arms festival, penetrates the flat -sale, is aided with to prevent that the round pin axle axial from leaping up and axial pivoted device again, just can be firmly, reliably the holding arms save the upper chord and couple together.

Description

The flat-top tower crane crane arm pin shaft connection structure that winds up

Technical field

The utility model relates to a kind of pin shaft connection structure, relates in particular to a kind of flat-top tower crane crane arm pin shaft connection structure that winds up.

Background technology

At present, when existing jib for tower crane transits to triangular-section in square-section, top boom between square-section crane arm arm joint and triangular-section crane arm arm joint is connected bearing pin and adopts perpendicular pin mode, although it is relatively simple that this version is made, but the difficulty of installation, bearing pin are difficult to be in place, shortcoming is considered in humanization designing aspect, because perpendicular pin form is unfavorable for the local pressure between bearing pin and its connection otic placode, can affect the service life of hoisting arm structure part simultaneously.

As shown in Figure 1-Figure 3, be transitioned into the hole of wearing bearing pin in the arm joint I (1) of triangular-section and ears plate I (3) integrally welded with ears plate I (3) by square-section and become vertical direction, arm saves the hole of wearing bearing pin in II (2) and ears plate II (4) integrally welded with ears plate II (4) and becomes vertical direction; In the time that in the internal arm of ears plate II (4) insertion ears plate I (3) and between guarantee two ears plates, the axiality in hole is better, perpendicular pin (5) passes the pin shaft hole of ears plate II (4) and ears plate I (3) simultaneously, and lock pin (6) is passed to bearing pin (5) lockpin hole of both sides up and down, then lock pin (6) two ends are passed split pin (7) and split pin (7) is opened completely.

In sum, the crane arm arm joint that square-section is transitioned into triangular-section by perpendicular pin saves with the crane arm arm of triangular-section the version coupling together, although can meet normal instructions for use, but the installation requirement on structural member is high, it is low difficulty to be installed, to be unfavorable for structure stress and affect service life, the human oriented design level of structural member, therefore just there will be following technical disadvantages: 1, bearing pin assembling is difficult. Because vertical pin diameter is thick, Heavy Weight, manpower transport installs originally comparatively hard, installation difficulty; Simultaneously due to for large arm under whole crane arm duty not sagging, in the time of structural design, every joint crane arm top boom can carry out contraction to a certain degree by relative lower boom, between the otic placode that causes top boom to dock, there is malalignment to a certain degree, thereby cause bearing pin to beat difficulty, need exert great efforts, the long period could be in place bearing pin.

2, crane arm ears plate and the bearing pin entirety unbalance stress that winds up, is unfavorable for that the stressed and local weld seam of structural member is stressed. Because crane arm lower boom two planes are adjacent to, from lower boom be adjacent to identity distance from away from more, otic placode is stressed larger, be therefore unfavorable for the stressed of structural member, and the unbalance stress of otic placode also can cause the stressed difference of welded seam of different otic placodes. Mention because the contraction of the relative lower boom of crane arm top boom causes the malalignment existing between the otic placode of top boom docking in the 1st article simultaneously, also can cause top boom ears plate and bearing pin unbalance stress, thereby be unfavorable for that the stressed and local weld seam of structural member is stressed.

3, human oriented design level is low. Because mount pin shaft diameter is large, weight is heavier, manpower transport installs comparatively difficulty, and bearing pin installation process difficulty, bearing pin squeeze into that time of otic placode is long, installation personnel physical demands is huge, and the requirement of this and human oriented design aspect is not inconsistent.

Summary of the invention

The shortcomings and deficiencies that exist for the top boom connecting pin axle construction form between the crane arm arm joint of existing derrick crane square-section and triangular-section, for installation process efficient and convenient, in use procedure, reach safety, reliable, can also improve the stress of structure, the bearing pin type of attachment therefore a kind of Novel flat-top tower crane crane arm of design invention winds up simultaneously.

For achieving the above object, the utility model provides a kind of flat-top tower crane crane arm pin shaft connection structure that winds up, and comprises the ears plate I of linking arm joint I, and the ears plate II of linking arm joint II, and the pin shaft hole that ears plate I, II are provided with becomes horizontal direction; In the time that ears plate II is inserted the internal arm of ears plate I, flat-sale is simultaneously through the pin shaft hole in ears plate I, II.

Further, in described flat-sale, be also combined with the device that prevents bearing pin axial jump and axial rotation.

Visible, when crane arm is transitioned into triangular-section by square-section, top boom between the crane arm arm joint of square-section and triangular-section is connected otic placode wears the otic placode form of flat-sale instead, after two joint crane arm otic placodes are docking together, penetrate connection flat-sale, be aided with again and prevent bearing pin axial jump and axial rotation device, can be by safe and reliable the coupling together of two joint crane arm top booms.

To sum up, the utility model flat-top tower crane crane arm wind up bearing pin type of attachment structural member and stressed good, easy for installation, the humanization designing, safe and reliable of bearing pin, have following advantage:

1, structural member and bearing pin distribution of force is even, stress good. Adopt flat-sale version, otic placode is subject to pulling force simultaneously in theory, and bearing pin and otic placode uniform stressed, be therefore conducive to the stressed of structural member and bearing pin, includes that to be beneficial to the weld seam of welding otic placode stressed.

2, quick and easy for installation, connect safe and reliable. Owing to adopting flat-sale to connect, there is not disalignment problem in the otic placode connecting, simultaneously by wearing pin oil cylinder and bearing pin mounting bracket, makes whole bearing pin easy for installation in theory, and prevent bearing pin axial jump and axial rotation device, finally guarantee this connected mode safety, reliable.

3, human oriented design level is high. Because bearing pin is installed by wearing pin oil cylinder, save the muscle power that installation personnel beats bearing pin; Because this kind is designed with bearing pin mounting bracket, avoid personnel to carry bearing pin difficult problem simultaneously. Wear pin oil cylinder and bearing pin mounting bracket and fully demonstrated the design of hommization aspect.

Brief description of the drawings

Fig. 1 is the derrick runway girder pin shaft connection structure schematic diagram that winds up;

Fig. 2 be in Fig. 1 A to structural representation;

Fig. 3 be in Fig. 1 B-B to structural representation;

Fig. 4 is structural representation of the present utility model;

Fig. 5 be in Fig. 4 A to structural representation;

Fig. 6 be in Fig. 4 B-B to structural representation;

In figure: 1, arm joint I, 2, arm joint II, 3, ears plate I, 4, ears plate II, 5, perpendicular pin, 6, lock pin, 7, split pin, 15, flat-sale, 16, prevent the device of bearing pin axial jump and axial rotation.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Fig. 4-Fig. 5, when one joint square-section crane arm arm joint right-hand member conversion is connected with triangular-section crane arm arm joint, the hole of wearing bearing pin in arm joint I 1 and ears plate I 3 integrally welded with ears plate I 3 becomes horizontal direction, the hole of wearing bearing pin in arm joint II 2 and ears plate II 4 integrally welded with ears plate II 4 becomes horizontal direction, in the time that ears plate II 4 is inserted in the internal arm of ears plate I 3 and ensure that the axiality in hole between two ears plates is better, flat axle 15 is simultaneously through the pin shaft hole of ears plate II 4 and ears plate I 3. Comprise bearing pin support by this device of device 16(that prevents bearing pin axial jump and axial rotation), can be by safe and reliable the coupling together of two joint crane arm top booms. This kind of version, easy for installation, humanization designing, safe and reliable.

After enforcement, the utility model is considered from installing, dismantle angle, very simple and convenient quick. Human oriented design level is high, difficulty while having avoided bearing pin to squeeze into arm joint joint, wastes time and energy and the problem of manpower transport's bearing pin difficulty.

By applying this technology, it is more perfect, more perfect that the crane arm arm joint connection of XGTT1200 is safe and reliable, the design more convenient, faster and hommization aspect are installed is made in arm restraining. Therefore, propose the art of this patent and be necessary very much meanwhile, the design of other products is had to important reference value.

Claims

1. the flat-top tower crane crane arm pin shaft connection structure that winds up, it is characterized in that, comprise the ears plate I (3) of linking arm joint I (1), and the ears plate II (4) of linking arm joint II (2), and the pin shaft hole that ears plate I, II (3,4) are provided with becomes horizontal direction; In the time that ears plate II (4) is inserted the internal arm of ears plate I (3), flat-sale (15) is simultaneously through the pin shaft hole in ears plate I, II (3,4).

2. a kind of flat-top tower crane crane arm according to claim 1 pin shaft connection structure that winds up, is characterized in that, is also combined with the device (16) that prevents bearing pin axial jump and axial rotation in described flat-sale (15).