CN111130029A

CN111130029A - Tower crane main cable fixing device and using method thereof

Info

Publication number: CN111130029A
Application number: CN202010132970.2A
Authority: CN
Inventors: 王建军; 米成宏; 衣磊; 刘文芳; 郭鹏; 周晨光; 王福利; 陈建宇; 许焱亮
Original assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Current assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-05-08

Abstract

The invention discloses a tower crane main cable fixing device and a use method thereof, belonging to the technical field of tower cranes. The invention includes a wire-pressing fastening component and a U-shaped bending bolt; the wire-pressing fastening component is assembled by a fastener I and a fastener II, the fastener I is provided with a wire-pressing groove I, and the fastener II is There is a line pressing groove II on it, and the line pressing groove I and the line pressing groove II are butted to form a butt through hole; the fastener I and the fastener II are both provided with positioning through holes, and the U-shaped folding One end of the bent bolt is the threaded end of the straight rod, the threaded end of the straight rod passes through the positioning through hole and is fastened by a nut, and the other end of the U-shaped bending bolt is a U-shaped bending end, and the U-shaped bending end is connected with the other end. There is an adjustable tightening space between the pressure line tightening components. The invention solves the problems of unreliable fixing of cables, easy falling off and breaking, etc., effectively avoids the impulse caused by the lifting of the tower body, and improves work efficiency and safety.

Description

Tower crane main cable fixing device and using method thereof

Technical Field

The invention relates to a cable fixing technology of a tower crane, and belongs to the technical field of tower cranes.

Background

At present, when the tower crane is in construction, along with the increase of the construction height, the tower crane needs to be jacked, and the height of the tower crane is increased so as to meet the construction requirement. And the big cross-section cable of long distance vertical laying because the dead weight is great, has great degree of difficulty when cable laying and cable are fixed, when the regional cable laying that some spaces are little, perpendicular cable arrange, need fix on the cable route after cable one end is fixed, and the perpendicular cable of big cross-section all lays singly usually.

The tower crane is used as a hoisting machine for high-altitude construction of a building site, a motor mechanism needs to be communicated with a power supply of the building site through a main cable, the middle section of the cable needs to be fixed in time after the cable is lifted to a specified position by the tower crane, and a rope or a cable net is usually hung and fixed on a main chord of a standard knot, so that the main cable is prevented from swinging high altitude or being damaged in work, and the two hanging methods are difficult to operate and high in danger.

And the cable hanging net needs to be sleeved on the main cable in series, and the main cable is fixed on the standard section of the tower body by the cable hanging net. However, when the cable is jacked up in an actual working condition, the cable hanging net is easy to detach, the main cable is damaged or even broken, the service life of the cable is seriously influenced, construction shutdown is caused, the operation safety is poor, and the like.

Two modes of operation of the prior art: the cable hanging net fixing device is required to be disassembled, and after jacking operation, the cable hanging net position is adjusted; the second kind is fixed the cable through the centre gripping clamp, after operation jacking process, through not hard up bolt adjustment fixing device's position. Above-mentioned 2 kinds of operation methods all have the drawback, are unfavorable for efficiency of construction and construction safety. The main disadvantages are as follows:

1. in the jacking operation process, the fixing device must be disassembled firstly, which wastes time and leads to lower working efficiency;

2. after the jacking operation process, the two fixing devices are matched with the positions of the standard knot hooks again, the positions of the hanging nets need to be adjusted, and the operation convenience is poor; the working strength of workers is increased, and the construction safety is not facilitated;

3. because the section of the main cable is large, the cable is used for hanging the net for a long time, the cable has a great weight and is easy to scratch the insulating sheath of the main cable, and the service life of the cable is shortened;

4. the clamping and fixing device is easy to fail to cause the dangerous situations such as falling off of the fixing device.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the tower crane main cable fixing device and the using method thereof, which are used for solving the problems that the cable is not firmly fixed, and is easy to fall off and break in the prior art, effectively avoiding impulsive force caused by jacking of a tower body, and improving the working efficiency and the safety.

The invention is realized by the following technical scheme: a tower crane main cable fixing device comprises a pressing line fastening assembly and a U-shaped bending bolt; the wire pressing fastening assembly is formed by butt joint and splicing of a fastening piece I and a fastening piece II, a wire pressing groove I is formed in the fastening piece I, a wire pressing groove II is formed in the fastening piece II, the wire pressing groove I is in butt joint with the wire pressing groove II, and a butt joint through hole for fixing a cable is formed in the middle of the wire pressing fastening assembly; the fastener I and the fastener II are respectively provided with two positioning through holes for the U-shaped bending bolt to pass through, one end of the U-shaped bending bolt is provided with two separated straight rod threaded ends, the straight rod threaded ends pass through the positioning through holes and are fastened through nuts, the other end of the U-shaped bending bolt is a downward U-shaped bending end, and an adjustable fastening space is reserved between the U-shaped bending end and the pressing line fastening assembly.

Line ball recess I and line ball recess II are semi-circular arc and lead to the groove.

An open type rubber wire protecting sleeve is arranged in the butt joint through hole.

The fastener I is provided with a positioning convex column, and the positioning through hole penetrates through the positioning convex column.

The fastener I is a concave part with a notch, the fastener II is a block body matched with the notch in shape, and the fastener II is embedded into the notch during butt joint.

The notch is rectangular, and the main body of the fastener II is a rectangular piece.

Preparing a fastener I, a fastener II and a U-shaped bent bolt, enabling a straight rod thread end of the U-shaped bent bolt to simultaneously penetrate through positioning through holes of the fastener I and the fastener II and be pre-fastened through a nut, then enabling a cable to penetrate through a butt joint through hole formed by the line pressing groove I and the line pressing groove II, and then fastening the cable through the nut; the size of the adjustable fastening space is adjusted according to the thickness of the tower body chord member, then the U-shaped bending end is clamped on the tower body chord member through the adjustable fastening space, and finally the nut is screwed down to fix the cable, the fastener I, the fastener II and the U-shaped bending bolt on the tower body chord member simultaneously, so that the cable fixing operation is completed.

The invention has the beneficial effects that: the cable fixing device can solve the problems that in the prior art, a cable is not firmly fixed, is easy to fall off, is easy to break and the like. When carrying out the jacking operation, this cable fixing device can break away from the chord member and rise along with the rising of tower body jacking drive cable, effectively avoids the cable fracture that the impulsive force that causes because of the jacking of tower body causes. The main advantages are as follows:

1. in the jacking operation process, the main cable cannot be broken because the fixing device is not disassembled;

2. after the jacking operation process, the operation is convenient and fast, and dangerous situations such as falling-off of parts of the fixing device and the like caused by errors can be avoided;

3. because the section of the main cable is large, the cable cannot be damaged due to the external force action of the fixing device when the fixing device is used for a long time;

4. the invention has simple structure, convenient installation and high flexibility.

Drawings

The invention is further illustrated below with reference to the figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

fig. 3 is a reference diagram for use with the present invention.

In the figure, 1, a line pressing fastening component 1.1, fasteners I and 1.2 and a fastener II; 2. an adjustable fastening space; 3. 3.1 parts of a U-shaped bent bolt, 3.1 parts of a straight rod threaded end, and 3.2 parts of a U-shaped bent end; 4. an open type rubber wire sheath; 5. the butt joint through hole is 5.1, the line pressing grooves I and 5.2 and the line pressing groove II are formed; 6. positioning the through hole; 7. positioning the convex column; 8. nut, 9, notch, 10, cable, 11, tower chord.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail but are intended to be part of the specification as appropriate.

The tower crane main cable fixing device shown in fig. 1 and 2 comprises a pressing line fastening assembly 1 and a U-shaped bending bolt 3; the wire pressing fastening assembly 1 is formed by butt joint and splicing of a fastening piece I1.1 and a fastening piece II 1.2, a wire pressing groove I5 is formed in the fastening piece I1.1, a wire pressing groove II 6 is formed in the fastening piece II 1.2, the wire pressing groove I5.1 is in butt joint with the wire pressing groove II 5.2, and a butt joint through hole 5 for fixing a cable is formed in the middle of the wire pressing fastening assembly 1; the fastener I1.1 and the fastener II 1.2 are respectively provided with two positioning through holes 6 for the U-shaped bending bolt 3 to pass through, one end of the U-shaped bending bolt 3 is provided with two separated straight-rod thread ends 3.1, the straight-rod thread ends 3.1 pass through the positioning through holes 6 and are fastened through nuts 8, the other end of the U-shaped bending bolt 3 is provided with a downward U-shaped bending end 3.2, and an adjustable fastening space 2 is reserved between the U-shaped bending end 3.2 and the pressing line fastening assembly 1. The fastening may preferably be by a nut and washer assembly.

Line ball recess I5.1 is the logical groove of semicircle arc with line ball recess II 5.2, and the cylindrical butt joint through-hole that forms is less than fixed cable diameter size looks adaptation and adjustable.

An open type rubber wire protecting sleeve 4 is arranged in the butt joint through hole 5. The open type rubber wire protecting sleeve effectively protects the cable at a stress point, so that the cable is not easy to fall off and damage.

The fastener I1.1 is provided with a positioning convex column 7, and the positioning through hole 6 penetrates through the positioning convex column 7.

The fastener I1.1 is a concave part with a notch 9, the fastener II 1.2 is a block body matched with the notch 9 in shape, and the fastener II 1.2 is embedded into the notch 9 when in butt joint. The structure of the line pressing fastening component 1 is more compact and the use is safer.

The notch 9 is rectangular, and the main body of the fastener II 1.2 is a rectangular piece.

Referring to the

subject drawings

1 and 3, a method for using the fixing device for the main cable of the tower crane is that a fastener I1.1, a fastener II 1.2 and a U-shaped bending bolt 3 are prepared, a straight rod threaded end 3.1 of the U-shaped bending bolt 3 simultaneously penetrates through positioning through holes 6 of the fastener I1.1 and the fastener II 1.2 and is pre-fastened through a nut 8, then a cable 10 penetrates through a butt through hole 5 formed by a line pressing groove I5.1 and a line pressing groove II 5.2, and then the cable is fastened through the nut 8; the size of the adjustable fastening space 2 is adjusted according to the thickness of the tower chord 11, then the U-shaped bending end 3.2 is clamped on the tower chord 11 through the adjustable fastening space 2, and finally the nut 8 is screwed up to simultaneously fix the cable 10, the fastener I1.1, the fastener II 1.2 and the U-shaped bending bolt 3 on the tower chord to complete the cable fixing operation.

The principle of the invention is as follows: mainly by fastener I1.1, fastener II 1.2 and 3 three fastening module constitutions of U type bending bolt, fix two fasteners, cable conductor and tower body chord member horizontal atress through the nut. Simple structure, simple to operate, flexibility are high, and this fixing device does not have the effort to the cable conductor in the vertical direction, can not cause the damage to the cable conductor, does not have the ascending fixed knot of vertical direction structure again, and tower crane is when carrying out the jacking operation, and the cable can not lead to the damage because of the vertical direction impulsive force. In the jacking operation process, even if the cable fixing device is disassembled without loosening, because the fixing device does not have a vertical direction fixing structure, the cable fixing device does not receive downward acting force and can move along with upward pulling force of the cable, and the cable fixing device cannot cause damage problems such as main cable fracture and the like caused by jacking impact force. Due to the design of the U-shaped bending support, the three fastening modules are well connected together, and when the fixed position is adjusted, parts cannot fall off. The cable fixing device can solve the problems that in the prior art, a cable is not firmly fixed, is easy to fall off, is easy to break and the like. When carrying out the jacking operation, this cable fixing device can break away from the chord member and rise along with the rising of tower body jacking drive cable, effectively avoids the cable fracture that the impulsive force that causes because of the jacking of tower body causes.

The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A main cable fixing device for a tower crane, characterized in that it comprises a wire-pressing fastening assembly (1) and a U-shaped bending bolt (3); the wire-pressing fastening assembly (1) is composed of a fastener I (1.1) and fastener II (1.2) are butted and assembled, the fastener I (1.1) is provided with a pressure line groove I (5), and the fastener II (1.2) is provided with a line pressure groove. Slot II (6), the wire crimping groove I (5.1) is butted with the wire crimping groove II (5.2) and a butting hole (5) for fixing the cable is formed in the middle of the wire crimping fastening assembly (1) ; The fastener I (1.1) and the fastener II (1.2) are provided with two positioning through holes (6) for the U-shaped bending bolts (3) to pass through. One end of (3) is two separate straight rod threaded ends (3.1), the straight rod threaded ends (3.1) pass through the positioning through hole (6) and are fastened by a nut (8), the U-shaped bending The other end of the bolt (3) is a downward U-shaped bent end (3.2), and an adjustable fastening space (2) is left between the U-shaped bent end (3.2) and the crimping wire fastening component (1). ).

2 . The main cable fixing device of a tower crane according to claim 1 , wherein the wire pressing groove I ( 5.1 ) and the wire pressing groove II ( 5.2 ) are semi-circular arc through grooves. 3 .

3 . The main cable fixing device for tower cranes according to claim 1 or 2 , wherein the pair of through holes ( 5 ) are provided with open rubber conduits ( 4 ). 4 .

4. The tower crane main cable fixing device according to claim 1, characterized in that: the fastener I (1.1) is provided with a positioning convex column (7), and the positioning through hole (6) is positioned from the The boss (7) passes through.

5. The tower crane main cable fixing device according to claim 1, characterized in that: the fastener I (1.1) is a concave part with a notch (9), and the fastener II ( 1.2) is a block adapted to the shape of the notch (9), and the fastener II (1.2) is embedded in the notch (9) when docking.

6 . The main cable fixing device of a tower crane according to claim 5 , wherein the recess ( 9 ) is rectangular, and the main body of the fastener II ( 1.2 ) is a rectangular piece. 7 .

7. A method of using a tower crane main cable fixing device according to any one of claims 1-6, characterized in that: preparing the fasteners I (1.1), fasteners II (1.2) and U-shaped bending bolt (3), pass the straight threaded end (3.1) of the U-shaped bending bolt (3) through the positioning through holes (6) of fastener I (1.1) and fastener II (1.2) at the same time ) and pre-tighten it with the nut (8), then pass the cable through the butt hole (5) formed by the crimping groove I (5.1) and the crimping groove II (5.2), and then use the nut (8) ) tightening; adjust the size of the adjustable tightening space (2) according to the thickness of the tower chord, and then pass the U-shaped bent end (3.2) through the adjustable tightening space (2) to be stuck on the tower chord Finally, tighten the nut (8) to fix the cable, fastener I (1.1), fastener II (1.2) and U-shaped bending bolt (3) on the chord of the tower body at the same time to complete the cable fixing operation.