CN116639603A - A tower crane climbing frame - Google Patents

Abstract

The invention relates to the technical field of hoisting equipment, in particular to a tower crane climbing frame, which includes four main chords, an upper beam, a lower beam and a jacking beam, the lower beam is connected to the four main chords, the upper beam is connected to four The main chords are connected, and at least eight lifting cylinders are arranged on the lower beam, and a plurality of lifting cylinders are evenly distributed at the four corners of the lower beam. The side of the beam away from the upper beam is detachably provided with a plurality of first climbing claws on the lower beam, and a plurality of second crawling claws are detachably arranged on the jacking beam. The beneficial effects of the present invention are: the present invention can increase sufficient jacking force by adopting at least eight lifting cylinders, and the multiple lifting cylinders are respectively arranged close to the four main chords, which can reduce the bending stress on the climbing frame, which is beneficial to improve the super large The stability of the climbing frame of the tonnage tower crane during the climbing process.

Description

A tower crane climbing frame

technical field

The invention relates to the technical field of hoisting equipment, in particular to a tower crane climbing frame.

Background technique

The tower crane needs to be continuously raised according to the height of the building during construction on the construction site. The climbing frame plays a key role as the lifting device of the tower crane. The size of the climbing frame is determined by the size of the standard section and the size of the oil cylinder. With the country's strong investment in infrastructure, there is an increasing demand for super-large-tonnage tower cranes in shipyards, transportation facilities, and power facility construction.

The superstructure of super large-tonnage tower cranes is very heavy, and the weight of its superstructure can reach thousands of tons. Therefore, there are high requirements for the stability of the climbing frame during the climbing process. Traditional single-cylinder jacking, double-cylinder jacking, Three-cylinder jacking, four-cylinder jacking systems and six-cylinder jacking systems are no longer suitable for super-large tonnage tower cranes. In the related art, the invention patent with publication number CN115784042A discloses a climbing system and a tower crane for a tower crane, including a climbing frame, a jacking beam and a jacking cylinder, and the jacking cylinder is installed between the jacking frame and the jacking beam , and the jacking cylinder is installed near the middle of the jacking frame and the jacking beam. However, due to the heavy superstructure of super-large-tonnage tower cranes, the central setting of the jacking cylinder will cause a large bending stress on the beam on the jacking frame, which is prone to deformation, which will reduce the climbing frame during the climbing process. stability.

How to solve the above technical problems is the problem faced by the present invention.

Contents of the invention

The purpose of the present invention is to provide a tower crane climbing frame, which can increase enough jacking force by adopting at least eight lifting oil cylinders, so that the tower crane climbing frame can climb stably, and a plurality of lifting oil cylinders are arranged close to four main chords, The bending stress on the jacking beam and the lower beam can be reduced, which is beneficial to improving the stability of the overall structure of the climbing frame, thereby helping to improve the stability of the climbing frame of the super large tonnage tower crane during the climbing process.

In order to achieve the purpose of the above invention, the technical solution adopted by the present invention is specifically: a tower crane climbing frame, including four main chords, upper beams, lower beams and jacking beams, the four main chords are arranged in parallel, and the four The four main chords are arranged in a rectangular array, the four corners of the lower beam are respectively connected to the bottom ends of the four main chords, and the upper beam is connected to the four main chords , the upper beam and the lower beam are arranged in parallel, and at least eight lifting cylinders are arranged on the lower beam, and a plurality of the lifting cylinders are evenly distributed at the four corners of the lower beam, and a plurality of the lifting cylinders are The lifting cylinders are arranged in parallel, one end of a plurality of lifting cylinders away from the lower beam is connected to the jacking beam, the jacking beam and the lower beam are arranged in parallel, and the jacking beam is arranged on the The lower beam is away from the side of the upper beam, the lower beam is detachably provided with a plurality of first climbing claws, and the jacking beam is detachably provided with a plurality of second crawling claws, the upper beam and the Multiple sets of first structural strengthening mechanisms are arranged between the lower beams, and multiple sets of second structural strengthening mechanisms are arranged between the four main chords.

When the present invention is actually used: the second climbing claw is installed on the jacking beam, and the second climbing claw is locked. The crossbeam is lifted above the step of the standard section, and then the first crawler claw is installed and locked on the lower crossbeam, and then the staff controls the lifting cylinder to shrink, so that the first crawler claw slowly falls on the step of the standard section, and the first crawler claw is inspected Whether it is locked to prevent falling off. Afterwards, the staff retracts the second climbing claw, controls the lifting cylinder to shrink, and drives the jacking beam to rise, so that the jacking beam moves above the standard section steps, and then the staff locks the second climbing claw on the jacking beam again, After that, the staff controls the elongation of the lifting cylinder, and slowly drops the second climbing claw on the jacking beam onto the pedal of the standard section, and checks whether the second climbing claw is locked to prevent it from falling off. The above process is a jacking cycle, repeat the above Action can realize the jacking of the climbing frame.

By adopting at least eight lifting cylinders, sufficient jacking force can be improved, so that the tower crane climbing frame can climb stably, and multiple lifting cylinders are respectively arranged close to the four main chords, which can reduce the bending of the jacking beam and the lower beam Stress is conducive to improving the stability of the overall structure of the climbing frame. The first structural strengthening mechanism and the second structural strengthening mechanism further improve the overall structural strength of the climbing stability.

Further, the lower beam includes four L-shaped beams and four connecting beams, the L-shaped beams and the connecting beams are sequentially connected alternately, and the four L-shaped beams are respectively fixed on the four main chords The bottom end of the L-shaped beam and the connecting beam is provided with a first flange connection mechanism, and the L-shaped beam and the connecting beam are detachably installed through the first flange connection mechanism, A plurality of the first climbing claws are detachably arranged on the four L-shaped beams, and a plurality of the lifting cylinders are respectively detachably arranged on the four L-shaped beams.

By adopting the above technical solution, since the overall structure of the lower cross beam is relatively large, the splicing mechanism is adopted, which is beneficial to reduce the processing difficulty.

Further, the first flange connection mechanism includes a first connection flange, a second connection flange and a plurality of connection bolts, the first connection flange is provided at both ends of the L-shaped beam, and the Both ends of the connecting crossbeam are provided with the second connecting flange, the first connecting flange and the second connecting flange are arranged one by one, and a plurality of connecting bolts are threaded on the mutually matched on the first connecting flange and the second connecting flange.

By adopting the above technical solution, the connection method using the first flange connection mechanism is easy to operate, and can provide sufficient connection strength between the L-shaped beam and the connecting beam.

Further, the L-shaped beam is provided with a plurality of oil cylinder installation holes and a plurality of first installation holes, and the plurality of lifting oil cylinders are detachably installed in the plurality of oil cylinder installation holes, and the plurality of first The climbing claws are respectively detachably installed at the plurality of first installation holes.

By adopting the above technical solution, the oil cylinder installation hole and the first installation hole are provided to facilitate the installation of the lifting oil cylinder and the first climbing claw.

Further, the jacking beam includes two U-shaped frames and two adjusting beams, the U-shaped frames and the adjusting beams are sequentially connected end-to-end, and the U-shaped frame and the adjusting beams are provided with a first Two flange connection mechanisms, the U-shaped frame and the adjustment beam are detachably installed through the second flange connection mechanism, multiple lifting cylinders are respectively connected to two of the U-shaped frames, and multiple The second claws are respectively detachably arranged on the two U-shaped frames.

By adopting the above technical solution, since the overall structure of the jacking beam is large, the jacking beam adopts a spliced mechanism, which is beneficial to reduce the difficulty of processing.

Further, the U-shaped frame is provided with a plurality of oil cylinder connection seats, and the plurality of lifting cylinders are respectively connected with a plurality of the oil cylinder connection seats, and the U-shaped frame is provided with a plurality of second installation holes, and the plurality of The two second crawling claws are respectively slidably arranged in a plurality of second installation holes, and the U-shaped frame is provided with a climbing claw installation drag near the second installation holes, and a lock is provided on the climbing claw installation drag The locking hole is detachably provided with a locking bolt.

By adopting the above technical solution, the oil cylinder connection seat facilitates the installation of the lifting oil cylinder. The climbing claw installation drag is convenient for installing the second crawling claw.

Further, the upper beam includes four groups of spliced beams, and the two ends of any one of the spliced beams are respectively connected to two adjacent main chords, and each of the adjacent two main chords is provided with a A set of splicing beams, the splicing beams include two first splicing beams and second splicing beams, the two first splicing beams are respectively connected to the two ends of the second splicing beams, and the two first splicing beams The spliced beams are respectively connected to two adjacent main chords, a third flange connection mechanism is arranged between the first spliced beam and the second spliced beam, and the first spliced beam and the second spliced beam The two spliced beams are detachably installed through the third flange connection mechanism.

By adopting the above technical solution, the spliced structure of the upper beam reduces the production difficulty.

Further, the first structural reinforcement mechanism includes a column, a first slanted column and a second slanted column, the column is arranged vertically, and the two ends of the column are respectively connected to the upper beam and the lower beam, The two ends of the first slanting column are respectively connected with the upper beam and the lower beam, the two ends of the second slanting column are respectively connected with the upper beam and the lower beam, and the first slanting column The second slanting column and the second slanting column are respectively arranged obliquely to the upright column, and the first slanting column and the second slanting column are symmetrically distributed on both sides of the upright column.

By adopting the above technical solution, the first structure strengthening mechanism improves the strength of the overall structure of the climbing frame.

Further, the second structural strengthening mechanism includes a first transverse web bar, a first diagonal web bar, a second diagonal web bar, a second transverse web bar, a third diagonal web bar and a fourth diagonal web bar, and the first transverse web bar The two ends of the bar are respectively connected to two adjacent main chords, the two ends of the first diagonal web are respectively connected to the main chord and the upper beam, and the first diagonal web is close to One end of the main chord is arranged close to the end of the first transverse web, the two ends of the second diagonal web are respectively connected with the main chord and the upper beam, and the first diagonal web The two ends of the first diagonal-web rod are distributed symmetrically with the second diagonal-web rod, and the end of the first diagonal-web rod away from the first diagonal-web rod is inclined toward the second diagonal-web rod.

The two ends of the second cross-web member are respectively connected with two adjacent main chords, the two ends of the third diagonal member are respectively connected with the main chord and the first transverse-web member, and the The end of the third diagonal member close to the main chord is arranged close to the end of the second transverse member, and the two ends of the fourth diagonal member are connected to the main chord and the first transverse member respectively. connected, the third diagonal rod and the fourth diagonal rod are symmetrically distributed at both ends of the second transverse rod, and the end of the third diagonal rod away from the second transverse rod faces the The fourth oblique web bar is arranged obliquely.

By adopting the above technical solution, the second structure strengthening mechanism further improves the stability of the overall structure of the climbing frame.

Further, multiple sets of guide wheels are provided on the jacking beam.

By adopting the above technical solution, the guide wheels have a guiding effect on the climbing of the jacking beam, which can improve the stability of the jacking beam during the climbing process.

By adopting the above technical solution, the climbing frame can climb stably on the standard section.

Compared with prior art, the beneficial effect of the present invention is:

1. The present invention can improve the jacking force during the climbing process by arranging at least eight lifting cylinders, and can be applied to the climbing work of the climbing frame of the super large tonnage tower crane;

2. The present invention can reduce the bending stress on the jacking beam and the lower beam by setting a plurality of lifting cylinders close to the four main chords, which is conducive to improving the stability of the overall structure of the climbing frame, and is also conducive to improving the climbing frame. The stability of the frame during crawling;

3. The present invention is conducive to improving the stability of the overall structure of the climbing frame and improving the stability of the climbing frame during the crawling process by setting multiple sets of first structure strengthening mechanisms and second structure strengthening mechanisms.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

Fig. 1 is a schematic structural diagram of a climbing frame of a tower crane according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a climbing frame of a tower crane according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the lower beam of the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a jacking beam according to an embodiment of the present invention.

Fig. 5 is a partial enlarged view of the jacking beam structure of the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of an upper beam according to an embodiment of the present invention.

Wherein, reference signs are: 1, main chord; 2, upper beam; 21, spliced beam; 211, first spliced beam; 212, second spliced beam; 3, lower beam; 31, L-shaped beam; 32, Connecting beam; 4. Lifting beam; 41. U-shaped frame; 42. Adjusting beam; 5. Lifting cylinder; 6. First climbing claw; 7. Second climbing claw; 8. First structural strengthening mechanism; ; 82, the first oblique column; 83, the second oblique column; 9, the second structure strengthening mechanism; 91, the first transverse rod; 92, the first oblique rod; 93, the second oblique rod; 94, the second Cross web bar; 95, third diagonal web bar; 96, fourth diagonal web bar; 10, first flange connection mechanism; 101, first connecting flange; 102, second connecting flange; 103, connecting bolt; 11 1. Oil cylinder installation hole; 12. First installation hole; 13. Second flange connection mechanism; 14. Oil cylinder connection seat; 15. Second installation hole; 16. Crawler installation drag; 17. Locking hole; 18. Lock 19, guide wheel; 20, the third flange connection mechanism.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example:

Referring to Fig. 1 and Fig. 2, the technical solution provided in this embodiment is, a tower crane climbing frame, including four main chords 1, upper beam 2, lower beam 3 and jacking beam 4, four main chords 1 Arranged in parallel, and the four main chords 1 are arranged in a rectangular array, the four corners of the lower beam 3 are respectively connected to the bottom ends of the four main chords 1, and the upper beam 2 is connected to the four main chords 1 , the upper beam 2 and the lower beam 3 are arranged in parallel, and the lower beam 3 is provided with at least eight lifting cylinders 5, and a plurality of lifting cylinders 5 are evenly distributed at the four corners of the lower beam 3, and a plurality of lifting cylinders 5 are arranged in parallel, One end of a plurality of lifting cylinders 5 away from the lower beam 3 is connected to the jacking beam 4, the jacking beam 4 and the lower beam 3 are arranged in parallel, and the jacking beam 4 is arranged on the side of the lower beam 3 away from the upper beam 2, and the upper beam 3 A plurality of first climbing claws 6 are detachably arranged, and a plurality of second climbing claws 7 are detachably arranged on the jacking beam 4, and multiple sets of first structural strengthening mechanisms 8 are arranged between the upper beam 2 and the lower beam 3, and four Multiple sets of second structural strengthening mechanisms 9 are arranged between the main chords 1 .

In this embodiment, the number of lifting cylinders 5 is specifically eight, and each corner of the lower beam 3 is respectively provided with two lifting cylinders 5, and eight lifting cylinders 5 are combined to form an eight-cylinder jacking system, which can provide The large jacking force can be applied to the climbing work of the climbing frame of the super large tonnage tower crane.

What needs to be added is that in this embodiment, the upper beam 2 is fixed at one-third of the height of the four main chords 1 by welding, and the lower beam 3 is fixed at the height of the four main chords 1 by welding. bottom end.

Specifically, when the climbing frame is climbing, the staff installs the second climbing claw 7 on the jacking beam 4, and locks the second climbing claw 7, and the second climbing claw 7 falls on the step of the standard section. After that, the staff controls the lifting cylinder 5 to expand and contract, lifts the lower beam 3 to the top of the standard section step, and then installs and locks the first claw 6 on the lower beam 3, and then the staff controls the lifting cylinder 5 to shrink, so that the first Climbing claw 6 slowly falls on the step of standard section, checks whether the first crawling claw 6 is locked, prevents from coming off. Afterwards, the staff takes back the second climbing claw 7, controls the lifting cylinder 5 to shrink, and drives the jacking beam 4 to lift, so that the jacking beam 4 moves to the top of the standard section step, and then the staff locks the second climbing claw 7 again on the On the jacking beam 4, the staff controls the elongation of the lifting cylinder 5, slowly drops the second climbing claw 7 on the jacking beam 4 onto the pedal of the standard section, and checks whether the second climbing claw 7 is locked to prevent it from falling off. The above process is a jacking cycle, and the jacking of the climbing frame can be realized by repeating the above actions.

It can be understood that since the eight lifting cylinders 5 are evenly distributed at the four corners of the lower beam 3, the bending stress on the jacking beam 4 and the lower beam 3 can be reduced, which helps to improve the stability of the climbing frame structure .

Referring to Figures 2 and 3, the lower beam 3 includes four L-shaped beams 31 and four connecting beams 32, the L-shaped beams 31 and the connecting beams 32 are sequentially connected in a staggered manner, and the four L-shaped beams 31 and the four connecting beams 32 pass through After splicing, a rectangular frame structure is formed. The four L-shaped beams 31 are respectively fixedly connected to the bottom ends of the four main chords 1 by welding. A first flange connection mechanism 10 is provided between the L-shaped beam 31 and the connecting beam 32 , and the L-shaped beam 31 and the connecting beam 32 are detachably installed through the first flange connection mechanism 10 .

The first flange connection mechanism 10 includes a first connection flange 101, a second connection flange 102 and a plurality of connection bolts 103, the first connection flange 101 can be fixed on the end of the L-shaped beam 31 by welding, and Both ends of the L-shaped beam 31 are welded with a first connecting flange 101, the second connecting flange 102 can be fixed on the end of the connecting beam 32 by welding, and the two ends of the connecting beam 32 are welded with a second connecting flange. flange 102. The first connecting flange 101 and the second connecting flange 102 are arranged one by one, and a plurality of connecting bolts 103 can be threaded on the first connecting flange 101 and the second connecting flange 102 that cooperate with each other. The detachable installation between the L-shaped beam 31 and the connecting beam 32 has a relatively high safety factor through the connection mode of the first connecting flange 101 and the second connecting flange 102 .

It can be understood that since this embodiment is suitable for super-large tonnage tower cranes, the volume of the lower beam 3 is relatively large, and the spliced structure of the lower beam 3 is beneficial to reduce the production difficulty of the lower beam 3 and is also convenient for transportation. Due to the splicing design of the L-shaped beam 31 and the connecting beam 32, the length and width of the lower beam 3 can be adjusted by replacing the connecting beam 32 with different lengths, and the operation mode is flexible.

Referring to FIG. 2 and FIG. 3 , an oil cylinder installation hole 11 is respectively opened on two vertical outer surfaces perpendicular to each other on the L-shaped beam 31 , and the oil cylinder installation hole 11 is set near the corner of the L-shaped beam 31 . The oil cylinder mounting hole 11 is convenient for the installation of the lifting oil cylinder 5, and the lifting oil cylinder 5 can be installed at the oil cylinder mounting hole 11 by means of a bearing pin. A first installation hole 12 is respectively provided on two vertical outer surfaces of the L-shaped beam 31 perpendicular to each other, and the first climbing claw 6 can be installed in the first installation hole 12 by pin connection or bolt connection. In this embodiment, there are eight first crawling claws 6 , that is, two first crawling claws 6 are provided in each of the four directions of the lower beam 3 , so as to improve the stability of the climbing frame during crawling.

Referring to Fig. 4 and Fig. 5, the jacking beam 4 comprises two U-shaped frames 41 and two adjusting beams 42, the U-shaped frames 41 and the adjusting beams 42 are sequentially connected end to end, and the U-shaped frames 41 and the adjusting beams 42 are provided with The second flange connection mechanism 13 is detachably installed between the U-shaped frame 41 and the adjustment beam 42 through the second flange connection mechanism 13 . In this embodiment, the structure and connection method of the second flange connection mechanism 13 and the first flange connection mechanism 10 are the same, and the specific structure of the second flange connection mechanism 13 will not be described in detail here.

The top of the U-shaped frame 41 near its corners can be fixed with four oil cylinder connecting seats 14 by welding, and the oil cylinder connecting seats 14 are used to connect with the lifting cylinder 5. In this embodiment, the oil cylinder connecting seats 14 can be bearings seat, the piston end of the lifting cylinder 5 can be detachably installed on the bearing seat by bolts or bearing pins. It should be noted that the oil cylinder seat can also be an ear plate structure, and the piston end of the lifting cylinder 5 can be connected with the ear plate through a pin shaft.

Referring to Fig. 4 and Fig. 5, four second installation holes 15 are opened on the outer surface of the three vertical states on the U-shaped frame 41, and the eight second installation holes 15 on the jacking beam 4 are on the jacking beam 4 The arrangement of the eight first mounting holes 12 on the lower beam 3 is the same as that of the eight first mounting holes 12 on the lower beam 3, and the second claw 7 can be slidably arranged in the second mounting holes 15. The U-shaped frame 41 can be fixed with a climbing claw installation drag 16 by welding near the second mounting hole 15. A plurality of locking holes 17 are provided on the climbing claw installation drag 16, and a locking hole 17 is detachably installed in the locking hole 17. Latch 18. When the second crawling claw 7 needs to be locked, the second crawling claw 7 is placed on the crawling claw installation drag 16, and the locking latch 18 is inserted into the locking hole 17 and the second crawling claw 7 to realize the second climbing claw 7. The locking of climbing claw 7 has simple operation mode.

What needs to be added is that in this embodiment, the first climbing claw 6 and the second climbing claw 7 are square steel, and the square steel has high structural strength, which is beneficial to improve the stability of the climbing frame during climbing.

Referring to Fig. 4 and Fig. 5, two corners of the U-shaped frame 41 are respectively provided with a guide wheel 19, and the guide wheel 19 is arranged towards the standard section. When the climbing frame climbs on the standard section, the four guide wheels 19 of the jacking beam 4 abut against the four directions of the standard section respectively. The guide wheels 19 have a guiding effect on the climbing frame climbing, which improves the climbing frame during the lifting process. in the stability.

2 and 6, the upper beam 2 is a square frame structure, and the upper beam 2 includes four groups of spliced beams 21, and the two ends of any spliced beam 21 are respectively fixed with two adjacent main chords 1 by welding. A group of spliced beams 21 are respectively arranged between two adjacent main chords 1 , and the upper beams 2 are located at one-third of the height of the main chords 1 . The splicing beam 21 includes two first splicing beams 211 and second splicing beams 212, the two first splicing beams 211 are respectively connected to the two ends of the second splicing beams 212, and the two first splicing beams 211 are respectively connected to two adjacent splicing beams. The two main chords 1 are welded together, a third flange connection mechanism 20 is arranged between the first splicing beam 211 and the second splicing beam 212, and the first splicing beam 211 and the second splicing beam 212 are connected by a third flange Mechanism 20 is detachably installed. In this embodiment, the third flange connection mechanism 20 has the same structure and connection manner as the first flange connection mechanism 10 , and the specific structure of the third flange connection mechanism 20 will not be described in detail here.

Referring to Fig. 1 and Fig. 2, in this example, there are eight groups of first structure strengthening mechanisms 8, and the eight groups of first structure strengthening mechanisms 8 are distributed in four directions, front, back, left, and right sides of the upper beam 2, that is, each position of the upper beam 2 is There are two sets of first structure strengthening mechanisms 8, and the first structure strengthening mechanisms 8 on the same side are arranged close to each other. The first structure strengthening mechanism 8 comprises a column 81, a first slanting column 82 and a second slanting column 83, the column 81 is vertically arranged, and the two ends of the column 81 are connected with the upper beam 2 and the lower beam 3 respectively, and the column 81 can be welded Or the mode of hinge joint is connected with upper beam 2 and lower beam 3 respectively, the two ends of the first slanting column 82 are hinged with upper beam 2 and lower beam 3 respectively, and the two ends of the second slanting column 83 are respectively connected with upper beam 2 and lower beam 3. The crossbeam 3 is hinged, and the first slanting column 82 and the second slanting column 83 are arranged obliquely to the column 81 respectively, and the first slanting column 82 and the second slanting column 83 are symmetrically distributed on both sides of the column 81 . In this embodiment, the inclination range of the first slanting column 82 and the upright column 81 is 15° to 40°

It can be understood that the combination of the first slanting column 82, the second slanting column 83 and the upper beam 2 forms an inverted triangular structure, and the triangular structure has a strong stability effect, which is beneficial to improving the overall structural strength of the climbing frame.

Referring to Fig. 1 and Fig. 2, there are four sets of second structure strengthening mechanisms 9, and the four sets of second structure strengthening mechanisms 9 are respectively located in four directions, front, back, left, and right of the upper beam 2. The second structure strengthening mechanism 9 includes a first transverse web bar 91, a first diagonal web bar 92, a second diagonal web bar 93, a second transverse web bar 94, a third diagonal web bar 95 and a fourth diagonal web bar 96, the first transverse web bar The rods 91 are arranged horizontally, and the two ends of the first cross-web rods 91 are respectively hinged with two adjacent main chords 1 , and the first cross-web rods 91 are located at two-thirds of the height of the main chords 1 . The two ends of the first diagonal rod 92 are respectively hinged with the main chord 1 and the upper beam 2, and the end of the first diagonal rod 92 close to the main chord 1 is arranged close to the end of the first transverse rod 91, and the second diagonal The two ends of the web member 93 are respectively hinged with the main chord 1 and the upper beam 2, the first diagonal member 92 and the second diagonal member 93 are symmetrically distributed at both ends of the first transverse member 91, and the first diagonal member The end of 92 away from the first transverse web bar 91 is inclined towards the second diagonal web bar 93 . The splicing of the first cross-web bar 91 , the first diagonal-web bar 92 and the second diagonal-web bar 93 forms an inverted triangle structure, which further improves the structural strength of the climbing frame.

The second cross-web rod 94 is arranged horizontally, and the two ends of the second cross-web rod 94 are respectively hinged with two adjacent main chords 1 , and the second cross-web rod 94 is arranged near the top of the main chord 1 . The two ends of the third diagonal rod 95 are respectively hinged with the main chord 1 and the first transverse rod 91, and the end of the third diagonal rod 95 close to the main chord 1 is arranged close to the end of the second transverse rod 94, and the fourth The two ends of the oblique web bar 96 are respectively hinged with the main chord 1 and the first transverse web bar 91, the third oblique web bar 95 and the fourth oblique web bar 96 are symmetrically distributed at the two ends of the second transverse web bar 94, and the third An end of the diagonal web bar 95 away from the second transverse web bar 94 is inclined toward the fourth diagonal web bar 96 . The second cross-web bar 94 , the third diagonal-web bar 95 and the fourth diagonal-web bar 96 form an inverted triangle structure after splicing, which further improves the structural strength of the climbing frame.

The implementation principle of a tower crane climbing frame in this embodiment is: when the climbing frame is performing a climbing action, the staff installs the second climbing claw 7 on the jacking beam 4, and locks the second climbing claw 7, and the second climbing claw 7 is locked. The climbing claw 7 falls on the step of the standard section, and then the staff controls the lifting cylinder 5 to expand and contract, and lifts the lower beam 3 above the step of the standard section, and then installs and locks the first climbing claw 6 on the lower beam 3, and then works Personnel controls the lifting oil cylinder 5 to shrink, so that the first crawling claw 6 slowly falls on the step of the standard section, and checks whether the first crawling claw 6 is locked to prevent falling off. Afterwards, the staff takes back the second climbing claw 7, controls the lifting cylinder 5 to shrink, and drives the jacking beam 4 to lift, so that the jacking beam 4 moves to the top of the standard section step, and then the staff locks the second climbing claw 7 again on the On the jacking beam 4, the staff controls the elongation of the lifting cylinder 5, slowly drops the second climbing claw 7 on the jacking beam 4 onto the pedal of the standard section, and checks whether the second climbing claw 7 is locked to prevent it from falling off. The above process is a jacking cycle, and the jacking of the climbing frame can be realized by repeating the above actions.

Eight lifting oil cylinders 5 are combined to form an eight-cylinder jacking system, which can provide greater jacking force and is suitable for climbing work of the climbing frame of a super-large tonnage tower crane. Since the eight lifting cylinders 5 are evenly distributed at the four corners of the lower beam 3, the bending stress on the jacking beam 4 and the lower beam 3 can be reduced, which helps to improve the stability of the climbing frame structure.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (9)

1. a tower crane climbing frame is characterized in that, comprises four main chords (1), upper beam (2), lower beam (3) and jacking beam (4), four described main chords ( 1) arranged in parallel, and the four main chords (1) are arranged in a rectangular array, the four corners of the lower beam (3) and the bottom ends of the four main chords (1) respectively The upper beam (2) is connected to the four main chords (1), the upper beam (2) and the lower beam (3) are arranged in parallel, and the lower beam (3) has at least Eight lifting cylinders (5) are provided, and a plurality of lifting cylinders (5) are evenly distributed at the four corners of the lower beam (3), and a plurality of lifting cylinders (5) are arranged in parallel. One end of each lifting cylinder (5) away from the lower beam (3) is connected to the jacking beam (4), the jacking beam (4) and the lower beam (3) are arranged in parallel, and the The jacking beam (4) is arranged on the side of the lower beam (3) away from the upper beam (2), and the lower beam (3) is detachably provided with a plurality of first crawling claws (6), A plurality of second climbing claws (7) are detachably arranged on the jacking beam (4), and a plurality of sets of first structural strengthening mechanisms ( 8), multiple sets of second structural strengthening mechanisms (9) are arranged between the four main chords (1). 2. A kind of tower crane climbing frame according to claim 1, characterized in that, the lower beam (3) comprises four L-shaped beams (31) and four connecting beams (32), and the L-shaped beams (31) and described connecting crossbeam (32) are alternately connected successively, and four described L-shaped beams (31) are respectively fixed on the bottom of four described main chords (1), and described L-shaped beam (31) A first flange connection mechanism (10) is arranged between the connecting beam (32), and the first flange connection mechanism ( 10) Removable installation, a plurality of the first climbing claws (6) are respectively detachably arranged on the four L-shaped beams (31), and a plurality of the lifting cylinders (5) are respectively detachably arranged on the four on the L-shaped beam (31). 3. A kind of tower crane climbing frame according to claim 2, characterized in that, the first flange connection mechanism (10) comprises a first connection flange (101), a second connection flange (102) and A plurality of connecting bolts (103), the first connecting flange (101) is provided at both ends of the L-shaped beam (31), and the second connecting flange (101) is provided at both ends of the connecting beam (32). A connecting flange (102), the first connecting flange (101) and the second connecting flange (102) are arranged one by one, and a plurality of connecting bolts (103) are threaded on the mutually matched The first connecting flange (101) and the second connecting flange (102). 4. The climbing frame of a tower crane according to claim 2, characterized in that, the L-shaped beam (31) is provided with a plurality of oil cylinder installation holes (11) and a plurality of first installation holes (12), A plurality of the lifting cylinders (5) are respectively detachably installed in the plurality of the oil cylinder mounting holes (11), and a plurality of the first crawling claws (6) are respectively detachably installed in the plurality of the first mounting holes (12). 5. A kind of tower crane climbing frame according to claim 1, characterized in that, the jacking beam (4) comprises two U-shaped frames (41) and two adjusting beams (42), and the U-shaped The frame (41) and the adjusting beam (42) are sequentially connected head to tail, and a second flange connection mechanism (13) is arranged between the U-shaped frame (41) and the adjusting beam (42). U-shaped frame (41) and the adjustment crossbeam (42) are detachably installed through the second flange connection mechanism (13), and a plurality of the lifting cylinders (5) are connected to the two U-shaped frames ( 41) are connected, a plurality of the second crawling claws (7) are respectively detachably arranged on the two U-shaped frames (41), and multiple sets of guide wheels (19) are arranged on the jacking beam (4) . 6. The climbing frame of a tower crane according to claim 5, characterized in that, the U-shaped frame (41) is provided with a plurality of oil cylinder connecting seats (14), and the plurality of lifting oil cylinders (5) are respectively Connected with a plurality of said oil cylinder connecting seats (14), said U-shaped frame (41) is provided with a plurality of second mounting holes (15), and a plurality of said second crawling claws (7) are respectively slidably arranged on In a plurality of second installation holes (15), the U-shaped frame (41) is provided with a climbing claw installation drag (16) near the second installation hole (15), and the climbing claw installation drag (16) is A locking hole (17) is opened, and a locking bolt (18) is detachably arranged in the locking hole (17). 7. A kind of tower crane climbing frame according to claim 1, characterized in that, said upper beam (2) comprises four groups of spliced beams (21), and the two ends of any one of said spliced beams (21) are respectively connected with Two adjacent main chords (1) are connected, and a group of splicing beams (21) are arranged between adjacent two main chords (1), and the splicing beams (21) include two A first splicing beam (211) and a second splicing beam (212), two first splicing beams (211) are respectively connected to two ends of the second splicing beam (212), and two first splicing beams (212) are connected to each other. The spliced beams (211) are respectively connected to two adjacent main chords (1), and a third flange connection is arranged between the first spliced beam (211) and the second spliced beam (212) mechanism (20), the first splicing beam (211) and the second splicing beam (212) are detachably installed through the third flange connection mechanism (20). 8. A tower crane climbing frame according to claim 1, characterized in that, the first structural strengthening mechanism (8) comprises a column (81), a first slanting column (82) and a second slanting column (83 ), the column (81) is vertically arranged, and the two ends of the column (81) are connected to the upper beam (2) and the lower beam (3) respectively, and the first inclined column (82) The two ends of the upper beam (2) and the lower beam (3) are connected respectively, and the two ends of the second slanted column (83) are connected with the upper beam (2) and the lower beam (3) respectively. ), the first slanted column (82) and the second slanted column (83) are arranged obliquely with the column (81) respectively, and the first slanted column (82) and the second slanted column ( 83) are symmetrically distributed on both sides of the column (81). 9. The climbing frame of a tower crane according to claim 1, characterized in that, the second structural strengthening mechanism (9) comprises a first transverse web bar (91), a first diagonal web bar (92), a second Diagonal web bar (93), the second transverse web bar (94), the 3rd diagonal web bar (95) and the 4th diagonal web bar (96), the two ends of described first transverse web bar (91) respectively and adjacent two The two main chords (1) are connected, the two ends of the first diagonal web (92) are respectively connected with the main chord (1) and the upper beam (2), and the first diagonal The end of the web bar (92) close to the main chord (1) is set close to the end of the first transverse web bar (91), and the two ends of the second diagonal web bar (93) are respectively connected to the main chord The rod (1) is connected to the upper beam (2), and the first diagonal rod (92) and the second diagonal rod (93) are symmetrically distributed on both sides of the first horizontal rod (91). end, the end of the first diagonal rod (92) away from the first transverse rod (91) is inclined towards the second diagonal rod (93); The two ends of the second transverse web bar (94) are respectively connected to two adjacent main chords (1), and the two ends of the third diagonal web bar (95) are respectively connected to the main chords (1) ) is connected to the first cross-web bar (91), and the end of the third diagonal web bar (95) close to the main chord (1) is set close to the end of the second transverse web bar (94), The two ends of the fourth oblique web (96) are respectively connected with the main chord (1) and the first transverse web (91), and the third oblique web (95) and the fourth Diagonal web bars (96) are symmetrically distributed at both ends of the second transverse web bar (94), and the end of the third diagonal web bar (95) away from the second transverse web bar (94) faces the fourth Diagonal web bar (96) is provided with inclination.