CN109809310B - Swing arm tower crane pull rod and installation method thereof - Google Patents
Swing arm tower crane pull rod and installation method thereof Download PDFInfo
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- CN109809310B CN109809310B CN201811583174.XA CN201811583174A CN109809310B CN 109809310 B CN109809310 B CN 109809310B CN 201811583174 A CN201811583174 A CN 201811583174A CN 109809310 B CN109809310 B CN 109809310B
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- 238000009434 installation Methods 0.000 title claims abstract description 16
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- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 230000007704 transition Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 18
- 230000009191 jumping Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
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- 238000004804 winding Methods 0.000 claims description 5
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
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Abstract
A movable arm tower crane pull rod comprises an amplitude changing rope, an amplitude changing mechanism, an auxiliary mechanism, a traction rope for pulling a movable pulley block to an amplitude changing pull rod set, a movable pulley block, a fixed pulley block hinged with the tower top, an amplitude changing pull rod set hinged with the movable pulley block, a transition pulley, a fourth pin shaft and a traction pulley device, wherein the movable pulley block is connected with the fixed pulley block through the amplitude changing rope and is fixed through the fourth pin shaft, and the amplitude changing rope is wound on the amplitude changing mechanism; the two rotary pulley blocks of the movable pulley block are connected with a traction rope; the auxiliary mechanism, the traction pulley device, the transition pulley and the luffing pull rod set are arranged on the arm support, and the traction rope is wound on the auxiliary mechanism; the tower top is provided with a connecting plate and a rope-arranging pulley, the connecting plate is hinged with the fixed pulley block, and the rope-arranging pulley is in transition with the amplitude-variable rope. The invention further comprises an installation method of the movable arm tower crane pull rod.
Description
Technical Field
The invention relates to a movable arm tower crane pull rod and an installation method thereof, and belongs to the field of tower cranes.
Background
There are two modes of installing pull rod in the existing swing arm tower crane. First, the luffing rope is reeled by a person at high altitude. According to the scheme, as the two pulley blocks are far away (one fixed pulley is arranged on the top of the tower and one movable pulley is arranged at the pull rod of the upper chord of the arm support, the distance between the fixed pulley and the pull rod is generally more than twenty meters), and people are required to carry out high-altitude operation for a long time, the safety coefficient is low, the installation process is complex, and particularly when the diameter of the luffing rope is large, the luffing rope is difficult to install. Secondly, when the vertical tower is installed, the two pulley blocks are connected together (the tower top), after the luffing rope is manually reeled, the movable pulley block is pulled by the pulling rope, the pulling rope is usually pulled directly by the lifting reel, and the second auxiliary reels driven by the lifting reel are also used for pulling, and finally the movable pulley block is connected with the pull rod. The defect of this scheme is that the wire rope on the lifting reel is chaotic easily, and needs two haulage ropes to guarantee the balance of running block when drawing to avoid the luffing rope that installs to twist reverse, the installation degree of difficulty is great.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a swing arm tower crane pull rod and an installation method thereof.
The luffing rope and the two pulley blocks are wound before delivery, and only the auxiliary mechanism is used for pulling the movable pulley blocks during installation, so that the movable arm tower crane pull rod can be installed conveniently, safely and rapidly, and the installation method of the movable arm tower crane pull rod can be realized.
The invention relates to a pull rod of a movable arm tower crane, which is characterized in that: the luffing device comprises a luffing rope 9, a luffing mechanism 6, an auxiliary mechanism 2, a traction rope 11 for pulling a movable pulley block 8 to a luffing pull rod set 12, a movable pulley block 8, a fixed pulley block 10 hinged with a tower top 7, a luffing pull rod set 12 hinged with the movable pulley block 8, a tower top 7, a transition pulley 3, a fourth pin E and a traction pulley device 4, wherein the transition pulley 3 is arranged on an arm support 13 and used for guiding the traction rope 11, the movable pulley block 8 and the fixed pulley block 10 are connected through the luffing rope 9 before delivery and are fixed through the fourth pin E, and the luffing rope 9 is wound on the luffing mechanism 6; the movable pulley block 8 is provided with two rotary pulley blocks 5 which are used for connecting the traction rope 11; the auxiliary mechanism 2 is arranged on the arm support 13, and the traction rope 11 is wound on the auxiliary mechanism 2; the luffing pull rod group 12 is arranged on the arm support 13, the tower top 7 is provided with a connecting plate 7.2 and a rope pulley 7.1, the connecting plate 7.2 is hinged with the fixed pulley block 10, and the rope pulley 7.1 is connected with the luffing rope 9; two transition pulleys 3 are arranged on the arm support 13; the traction pulley device 4 is arranged on the arm support 13;
the fixed pulley block 10 comprises a fixed pulley frame 81, a plurality of first pulleys 82 and two second pulleys 83, the plurality of first pulleys 82 and the two second pulleys 83 are arranged in the fixed pulley frame 81, the fixed pulley frame 81 comprises a first upper plate 85, a first lower plate 86, a first partition plate 87, two first connecting plates 88 for hinging the tower top connecting plate 7.2, a first folding plate 89, a first sealing plate 90, a first side plate 91, a second side plate 92 and a protective tube 93, the first partition plate 87 comprises a plurality of blocks and is fixedly connected between the first upper plate 85 and the first lower plate 86, the first connecting plate 88 is fixedly connected between the first upper plate 85 and the first lower plate 86, the two first connecting plates 88 are respectively positioned at the outer sides of the first partition plates 87, the first partition plates 87 and the first connecting plates 88 are provided with coaxial through holes, the first sealing plates 90 are provided with two first sealing plates, one surfaces of the first sealing plates are fixedly connected to the first upper plate 85 and the first lower plate 86, one ends of the first sealing plates are fixedly connected to the outer sides of the first connecting plates 88, the other surfaces of the first sealing plates are fixedly connected to the first folding plates 89, the first folding plates 89 and the first connecting plates 88 are provided with coaxial through holes, the first side plates 91 and the second side plates 92 are fixedly connected to the first upper plate 85 and are divided into left and right groups, the first side plates 91 are positioned at the outer sides of the second side plates 92, and the protective tubes 93 are fixedly connected to the first side plates 91 and the second side plates 92 and are used for preventing the luffing ropes 9 from jumping out;
The movable pulley block 8 comprises a movable pulley frame 61, a plurality of third pulleys 62, a first pin shaft 1 for fixing the movable pulley block 5, and two movable pulley blocks 5 for penetrating traction ropes, wherein the plurality of third pulleys 62 are arranged in the movable pulley frame 61, the two movable pulley blocks 5 are arranged on the movable pulley frame 61, the movable pulley frame 61 comprises a second upper plate 64, a second lower plate 65, a second partition plate 66, two second connecting plates 67 for connecting the fixed pulley blocks 10 during installation, a third connecting plate 68 for connecting the amplitude-change pull rod group 12 and a lifting lug 69 for installation, the second partition plate 66 is formed by a plurality of blocks and fixedly connected between the second upper plate 64 and the second lower plate 65, the second lower plate 65 is provided with a hole hinged with the two movable pulley blocks 5, the hole for fixing the first pin shaft 1 is fixedly connected between the second upper plate 64 and the second lower plate 65, the two second connecting plates 67 are respectively positioned on the outer sides of the second partition plate 66, and the second partition plate 66, the second partition plate 66 and the third connecting plates 68 are fixedly connected on the upper plate 64 and the second lower plate 65;
The rotary pulley block 5 comprises a rotary pulley frame 51, a fourth pulley 52 and a small pulley 53, the rotary pulley frame 51 comprises a first lug plate 54, a second lug plate 55, a reinforcing plate 56 and two third lug plates 57, two holes are formed in the first lug plate 54, one hole is fixed through a first pin shaft 1, the other hole is used for hinging the fourth pulley 52, the first lug plate 54 and the second lug plate 55 are provided with coaxial through holes, the third lug plate 57 is fixedly connected to the first lug plate 54 and the second lug plate 55, the holes of the two third lug plates 57 are coaxially arranged, the reinforcing plate 56 is fixedly connected to the second lug plate 55, the small pulley 53 is arranged between the two third lug plates 57 of the rotary pulley frame 51, the fourth pulley 52 is arranged between the first lug plate 54 and the second lug plate 55 of the rotary pulley frame 51, and the rotary pulley block 5 is required to be fixed on the movable pulley block 8 through the first pin shaft 1 in a non-working state; in the working state, the pulley block is required to rotate for 8 degrees, and then is blocked by the first pin shaft 1;
The traction pulley device 4 comprises a fifth pulley 4.1, a fixed frame 4.2, a pulley frame 30, a second pin shaft 43, a third pin shaft 44, a bolt 35 and a stop pin 36, wherein the fixed frame 4.2 is arranged on the arm support 13 through the second pin shaft 43, the third pin shaft 44 penetrates through the fixed frame 4.2 and is fixed on the fixed frame 4.2, the fifth pulley 4.1 is arranged in the pulley frame 30 on the fixed frame 4.2, the fixed frame 4.2 comprises a first sealing plate 45, a transverse tube 46, a vertical tube 47, a fourth ear plate 48 and a fifth ear plate 49, two ends of the transverse tube 46 are fixedly connected with a first sealing plate 45, three through holes are formed in the transverse tube 46, one end of the vertical tube 47 is fixedly connected to one side of the transverse tube 46, the other end of the vertical tube is fixedly connected with the first sealing plate 45, the fourth ear plate 48 is fixedly connected to the upper plane of the vertical tube 47, the fifth ear plate 49 is fixedly connected to the lower plane of the fixed frame 47, the holes of the fourth ear plate 48 and the fifth ear plate 49 are coaxially arranged, the pulley frame 30 comprises two third sealing plates 45, a transverse tube 46, a vertical tube 47, a sixth ear plate 31 and a third ear plate 31 and a sixth ear plate 31 are fixedly connected to the other end of the fixed on the fixed side plate 33, and the third ear plate 33 are fixedly connected to the other end of the side plate 33, and the side plate 33 are fixedly connected to the side plate 33;
the amplitude-variable pull rod group 12 is composed of a plurality of pull rods, one end of the amplitude-variable pull rod group is hinged with the movable pulley block 8, and the other end of the amplitude-variable pull rod group is hinged with the arm support 13.
The method for installing the pull rod of the movable arm tower crane comprises the following steps of:
(S1) the movable pulley block 8 and the fixed pulley block 10 are hung to the tower top 7 through auxiliary equipment, and meanwhile, the amplitude changing mechanism 6 is started to loosen the amplitude changing rope 9.
(S2) the luffing rope 9 is passed through the rope pulley 7.1 and then the fixed pulley block 10 is mounted to the coupling plate 7.2 of the overhead 7.
And (S3) starting the auxiliary mechanism 2, leading out the traction rope 11, leading out the end of the traction rope 11, passing through the transition pulley 3, then passing through the fifth pulley 4.1 on the traction pulley device 4, then passing through the rotary pulley block 5 on the movable pulley block 8, and finally returning to the traction pulley device 4, and connecting and fixing the traction rope 11 with the third pin shaft 44 on the traction pulley device 4.
And (S4) removing a fourth pin shaft E which is connected with the movable pulley block 8 and the fixed pulley block 10, starting the auxiliary mechanism 2, enabling the movable pulley block 8 to move towards the arm support 13 under the action of the traction rope 11, and starting the amplitude changing mechanism 6 to loosen the amplitude changing rope 9 at the same time, so that auxiliary equipment moves along with the movable pulley block 8.
And (S5) continuing to start the auxiliary mechanism 2, stopping when the movable pulley block 8 moves to the luffing pull rod group 12, and connecting the movable pulley block 8 with the luffing pull rod group 12.
(S6) removing the traction rope 11, winding the traction rope 11 back onto the auxiliary mechanism 2, and releasing the auxiliary equipment.
(S7) starting the amplitude transformer 6 to tighten the amplitude transformer rope 9, and starting the arm support 13 to move.
Further, in the step (S1), the variable amplitude rope 9 connects the movable pulley block 8 and the fixed pulley block 10 together and winds the variable amplitude mechanism 6 before leaving the factory, that is, the variable amplitude rope 9 connects the movable pulley block 8, the fixed pulley block 10 and the variable amplitude mechanism 6 together.
Further, in the step (S1), the movable pulley block 8 has two sets of hanging points, the auxiliary equipment hangs the outer hanging point a by a hanging rope, and the other inner hanging point B is connected by a slightly long hanging rope.
In the step (S2), before the luffing rope 9 passes through the rope arranging pulley 7.1, the rope blocking pipe D needs to be removed, and the luffing rope 9 is prevented from jumping out after being threaded.
Further, in the step (S3), when the slings of the inner suspension point B on the movable pulley block 8 are tightened, the slings of the outer suspension point a are detached.
Further, in the step (S4), the removed fourth pin E may be placed at F of the fixed pulley block 10.
The beneficial effects of the invention are mainly shown in the following steps: the variable amplitude rope 9 is connected with the movable pulley block 8 and the fixed pulley block 10 before delivery, so that winding in the high air is not needed when the tower is erected, and the safety and the speed of the tower are improved; one traction rope 11 led out by the auxiliary mechanism 2 is connected with the two rotary pulley blocks 5 of the movable pulley block 8, so that the amplitude-variable rope 9 cannot twist in the process of being installed with the amplitude-variable pull rod set 12, and the installation difficulty is reduced; the implementation effect is good, the operation is convenient, and unsafe factors are effectively reduced.
Drawings
Fig. 1 is a schematic representation of the present invention after completion.
Fig. 2 shows the positions of the movable pulley block and the fixed pulley block before installation in the present invention.
Fig. 3 is a schematic lifting view of the movable pulley block and the fixed pulley block in the invention.
FIGS. 4a to 4c are schematic views of the movable pulley block and the fixed pulley block mounted on the tower top in the present invention, wherein FIG. 4a is a schematic view of the movable pulley block and the fixed pulley block lifted to the tower top;
FIG. 4b is a schematic illustration of the luffing rope threaded to the rope pulley; fig. 4c is a schematic view of the fixed pulley block connected to the top of the tower and the sling at the point of suspension B.
FIGS. 5a to 5c are schematic views of two rotary pulley blocks on a fixed pulley block according to the present invention, wherein FIG. 5a is a schematic view of two rotary pulley blocks on a fixed pulley block; FIG. 5b is a schematic view of the position of the rotary pulley block in the inactive state; fig. 5c is a schematic view of the position of the rotary pulley block in the operating state.
Fig. 6 is a schematic view of the assist mechanism and the traction rope of the present invention.
Fig. 6a to 6d are schematic views of the winding sequence of the traction rope, fig. 6a to 6d are partially enlarged schematic views of A, B, C, D of fig. 6, respectively,
FIG. 7 is a schematic diagram showing the connection of the movable pulley block and the fixed pulley block with the arm support pull rod after the movable pulley block is disassembled by the pin shaft. Fig. 7a and 7B are partial enlarged schematic views at a and B of fig. 7, respectively.
Fig. 8 is an assembly view of the fixed pulley block.
Fig. 9 is a structural view of the fixed pulley block.
Fig. 10 is an assembly view of the movable pulley block.
Fig. 11 is a structural view of the movable pulley block.
Fig. 12 is a diagram of a rotary pulley block.
Fig. 13 is a structural view of the rotary pulley block.
Fig. 14 is an assembly view of the traction sheave apparatus.
Fig. 15 is a block diagram of the mount in the traction sheave arrangement.
Fig. 16 is a block diagram of the pulley frame in the traction sheave apparatus.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Example 1
Referring to the drawings, a swing arm tower machine pull rod, characterized in that: the luffing mechanism comprises luffing ropes 9, luffing mechanisms 6, auxiliary mechanisms 2, traction ropes 11 for pulling movable pulley blocks 8 to luffing pull rod groups 12, movable pulley blocks 8, fixed pulley blocks 10 for hinging a tower top 7, luffing pull rod groups 12 for hinging the movable pulley blocks 8, a tower top 7, transition pulleys 3, fourth pin shafts E and traction pulley devices 4, wherein the transition pulleys 3 are arranged on arm frames 13 and used for guiding the traction ropes 11, the movable pulley blocks 8 and the fixed pulley blocks 10 are connected through the luffing ropes 9 before delivery and are fixed through the fourth pin shafts E, and the luffing ropes 9 are wound on the luffing mechanisms 6; the movable pulley block 8 is provided with two rotary pulley blocks 5 which are used for connecting the traction rope 11; the auxiliary mechanism 2 is arranged on the arm support 13, and the traction rope 11 is wound on the auxiliary mechanism 2; the luffing pull rod group 12 is arranged on the arm support 13, the tower top 7 is provided with a connecting plate 7.2 and a rope-arranging pulley 7.1, the connecting plate 7.2 is used for hinging the fixed pulley block 10, and the rope-arranging pulley 7.1 is connected with the luffing rope 9; two transition pulleys 3 are arranged on the arm support 13; the traction pulley device 4 is arranged on the arm support 13;
The fixed pulley block 10 comprises a fixed pulley frame 81, a plurality of first pulleys 82 and two second pulleys 83, the plurality of first pulleys 82 and the two second pulleys 83 are arranged in the fixed pulley frame 81, the fixed pulley frame 81 comprises a first upper plate 85, a first lower plate 86, a first partition plate 87, two first connecting plates 88 for hinging the tower top connecting plate 7.2, a first folding plate 89, a first sealing plate 90, a first side plate 91, a second side plate 92 and a protective tube 93, the first partition plate 87 comprises a plurality of blocks and is fixedly connected between the first upper plate 85 and the first lower plate 86, the first connecting plate 88 is fixedly connected between the first upper plate 85 and the first lower plate 86, the two first connecting plates 88 are respectively positioned at the outer sides of the first partition plates 87, the first partition plates 87 and the first connecting plates 88 are provided with coaxial through holes, the first sealing plates 90 are provided with two first sealing plates, one surfaces of the first sealing plates are fixedly connected to the first upper plate 85 and the first lower plate 86, one ends of the first sealing plates are fixedly connected to the outer sides of the first connecting plates 88, the other surfaces of the first sealing plates are fixedly connected to the first folding plates 89, the first folding plates 89 and the first connecting plates 88 are provided with coaxial through holes, the first side plates 91 and the second side plates 92 are fixedly connected to the first upper plate 8 for 5, left and right groups of the first side plates 91 are positioned at the outer sides of the second side plates 92, and the protective tubes 93 are fixedly connected to the first side plates 91 and the second side plates 92 for preventing the luffing ropes 9 from jumping out;
The movable pulley block 8 comprises a movable pulley frame 61, a plurality of third pulleys 62, a first pin shaft 1 for fixing the movable pulley block 5, and two movable pulley blocks 5 for penetrating a traction rope, wherein the plurality of third pulleys 62 are arranged in the movable pulley frame 61, the two movable pulley blocks 5 are arranged on the movable pulley frame 61, the movable pulley frame 61 comprises a second upper plate 64, a second lower plate 65, a second partition plate 66, two second connecting plates 67 for connecting the fixed pulley blocks 10 during installation, a third connecting plate 68 for connecting the amplitude-change pull rod group 12 and a lifting lug 69 for installation, the second partition plate 66 is fixedly connected between the second upper plate 64 and the second lower plate 65, the second lower plate 65 is provided with a hole hinged with the two movable pulley blocks 5, the second connecting plate 67 is fixedly connected in the second upper plate 64 and the second lower plate 65, the two second connecting plates 67 are respectively positioned on the outer sides of the second partition plate 66, the second connecting plates 67 and the third connecting plates 68 are coaxially arranged with the second connecting plates 67, the third connecting plates 68 are fixedly connected on the middle of the movable pulley frame 64;
The rotary pulley block 5 comprises a rotary pulley frame 51, a fourth pulley 52 and a small pulley 53, the rotary pulley frame 51 comprises a first lug plate 54, a second lug plate 55, a reinforcing plate 56 and two third lug plates 57, two holes are formed in the first lug plate 54, one hole is fixed through a first pin shaft 1, the other hole is used for hinging the fourth pulley 52, the first lug plate 54 and the second lug plate 55 are provided with coaxial through holes, the third lug plate 57 is fixedly connected to the first lug plate 54 and the second lug plate 55, the holes of the two third lug plates 57 are coaxially arranged, the reinforcing plate 56 is fixedly connected to the second lug plate 55, the small pulley 53 is arranged between the two third lug plates 57 of the rotary pulley frame 51, the fourth pulley 52 is arranged between the first lug plate 54 and the second lug plate 55 of the rotary pulley frame 51, and the rotary pulley block 5 is required to be fixed on the movable pulley block 8 through the first pin shaft 1 in a non-working state; in the working state, the pulley block is required to rotate for 8 degrees, and then is blocked by the first pin shaft 1;
The traction pulley device 4 comprises a fifth pulley 4.1, a fixed frame 4.2, a pulley frame 30, a second pin shaft 43, a third pin shaft 44, a bolt 35 and a stop pin 36, wherein the fixed frame 4.2 is arranged on the arm support 13 through the third pin shaft 44, the third pin shaft 44 penetrates through the fixed frame 4.2 and is fixed on the fixed frame 4.2, the fifth pulley 4.1 is arranged in the pulley frame 30 on the fixed frame 4.2, the fixed frame 4.2 comprises a first sealing plate 45, a transverse tube 46, a vertical tube 47, a fourth ear plate 48 and a fifth ear plate 49, two ends of the transverse tube 46 are fixedly connected with a first sealing plate 45, three through holes are formed in the transverse tube 46, one end of the vertical tube 47 is fixedly connected to one side of the transverse tube 46, the other end of the vertical tube is fixedly connected with the first sealing plate 45, the fourth ear plate 48 is fixedly connected to the upper plane of the vertical tube 47, the fifth ear plate 49 is fixedly connected to the lower plane of the fixed frame 47, the holes of the fourth ear plate 48 and the fifth ear plate 49 are coaxially arranged, the pulley frame 30 comprises two third sealing plates 45, a transverse tube 46, a vertical tube 47, a sixth ear plate 31 and a third ear plate 31 and a sixth ear plate 31 are fixedly connected to the other end of the fixed on the fixed side plate 33, and the third ear plate 33 are fixedly connected to the other end of the side plate 33, and the side plate 33 are fixedly connected to the side plate 33;
the amplitude-variable pull rod group 12 is composed of a plurality of pull rods, one end of the amplitude-variable pull rod group is hinged with the movable pulley block 8, and the other end of the amplitude-variable pull rod group is hinged with the arm support 13.
Example 2
Referring to fig. 1 to 7, a method for installing a tie rod of a swing arm tower crane, the method comprising the steps of:
(S1) the movable pulley block 8 and the fixed pulley block 10 are hung to the tower top 7 through auxiliary equipment, and meanwhile, the amplitude changing mechanism 6 is started to loosen the amplitude changing rope 9.
(S2) the luffing rope 9 is passed through the rope pulley 7.1 and then the fixed pulley block 10 is mounted to the coupling plate 7.2 of the overhead 7.
And (S3) starting the auxiliary mechanism 2, leading out the traction rope 11, leading out the end of the traction rope 11, passing through the transition pulley 3, then passing through the fifth pulley 4.1 on the traction pulley device 4, then passing through the rotary pulley block 5 on the movable pulley block 8, and finally returning to the traction pulley device 4, and connecting and fixing the traction rope 11 with the third pin shaft 44 on the traction pulley device 4.
And (S4) dismantling a pin shaft E for connecting the movable pulley block 8 and the fixed pulley block 10, starting the auxiliary mechanism 2, enabling the movable pulley block 8 to move towards the arm support 13 under the action of the traction rope 11, and starting the amplitude changing mechanism 6 to loosen the amplitude changing rope 9 at the same time, so that auxiliary equipment moves along with the movable pulley block 8.
And (S5) continuing to start the auxiliary mechanism 2, stopping when the movable pulley block 8 moves to the luffing pull rod group 12, and connecting the movable pulley block 8 with the luffing pull rod group 12.
(S6) removing the traction rope 11, winding the traction rope 11 back onto the auxiliary mechanism 2, and releasing the auxiliary equipment.
(S7) starting the amplitude transformer 6 to tighten the amplitude transformer rope 9, and starting the arm support 13 to move.
In the step (S1), the variable amplitude rope 9 connects the movable pulley block 8 with the fixed pulley block 10 and winds the variable amplitude mechanism 6 before leaving the factory, namely the variable amplitude rope 9 is used for connecting the movable pulley block 8, the fixed pulley block 10 and the variable amplitude mechanism 6 together.
In the step (S1), two groups of hanging points are arranged on the movable pulley block 8, the auxiliary equipment uses a hanging rope to hang the outer hanging point A, and the other inner hanging point B is connected by a slightly long hanging rope.
In the step (S2), before the luffing rope 9 passes through the rope arranging pulley 7.1, the rope blocking pipe D is required to be removed, and the luffing rope 9 is prevented from jumping out after being worn.
In the step (S3), the slings at the outer hanging point a are detached after the slings at the inner hanging point B on the movable pulley block 8 are tightened.
In the step (S4), the removed fourth pin E may be placed at F of the fixed pulley block 10.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, but also equivalent technical means that can be conceived by those skilled in the art according to the inventive concept.
Claims (6)
1. The utility model provides a swing arm tower machine pull rod which characterized in that: the luffing device comprises a luffing rope (9), a luffing mechanism (6), an auxiliary mechanism (2), a traction rope (11) for traction of a movable pulley block (10) to a luffing pull rod set (12), the movable pulley block (10), a fixed pulley block (8) hinged with a tower top (7), the luffing pull rod set (12) hinged with the movable pulley block (10), the tower top (7), a transition pulley (3) installed on a cantilever crane (13) for guiding the traction rope (11), a fourth pin shaft (E) and a traction pulley device (4), wherein the movable pulley block (10) and the fixed pulley block (8) are connected through the luffing rope (9) and are fixed through the fourth pin shaft (E), and the luffing rope (9) is wound on the luffing mechanism (6); two rotating pulley blocks (5) on the movable pulley block (10) are connected with the traction rope (11); the auxiliary mechanism (2) is arranged on the arm support (13), and the traction rope (11) is wound on the auxiliary mechanism (2); the luffing pull rod group (12) is arranged on the arm support (13), the tower top (7) is provided with a connecting plate (7.2) and a rope-arranging pulley (7.1), the connecting plate (7.2) is hinged with the fixed pulley block (8), and the rope-arranging pulley (7.1) is in transition with the luffing rope (9); two transition pulleys (3) are arranged on the arm support (13); the traction pulley device (4) is arranged on the arm support (13);
The fixed pulley block (8) comprises a fixed pulley frame (81), a plurality of first pulleys (82) and two second pulleys (83), the plurality of first pulleys (82) and the two second pulleys (83) are arranged in the fixed pulley frame (81), the fixed pulley frame (81) comprises a first upper plate (85), a first lower plate (86), a first baffle (87), two first connecting plates (88) for hinging an overhead connecting plate (7.2), a first folding plate (89), a first sealing plate (90), a first side plate (91), a second side plate (92) and a protective tube (93), the first baffle (87) is formed by a plurality of blocks and fixedly connected between the first upper plate (85) and the first lower plate (86), the first connecting plate (88) is fixedly connected between the first upper plate (85) and the first lower plate (86), the two first connecting plates (88) are respectively positioned on the outer sides of the first baffle (87), the first baffle (87) and the first connecting plates (88) are provided with coaxial through holes, the first baffle (86) and the first connecting plates (88) are fixedly connected on the first side plate (86) and the first lower plate (86), the first folded plate (89) and the first connecting plate (88) are provided with coaxial through holes, the first side plate (91) and the second side plate (92) are fixedly connected on the first upper plate (85) and are divided into two groups, the first side plate (91) is positioned at the outer side of the second side plate (92), and the protective tube (93) is fixedly connected on the first side plate (91) and the second side plate (92) and is used for preventing the luffing ropes (9) from jumping out;
The movable pulley block (10) comprises a movable pulley frame (61), a plurality of third pulleys (62), a first pin shaft (1) for fixing the movable pulley block (5), two movable pulley blocks (5) for penetrating a traction rope, wherein the plurality of third pulleys (62) are arranged in the movable pulley frame (61), the two movable pulley blocks (5) are arranged on the movable pulley frame (61), the movable pulley frame (61) comprises a second upper plate (64), a second lower plate (65), a second partition plate (66), two second connecting plates (67) for connecting a fixed pulley block (8) during installation, a third connecting plate (68) for connecting an amplitude-change pull rod group (12) and lifting lugs (69) for installation, the second partition plate (66) is formed by a plurality of blocks, and is fixedly connected between the second upper plate (64) and the second lower plate (65), the second lower plate (65) is provided with a hole hinged with the two movable pulley blocks (5), the hole for fixing the first pin shaft (1) is also arranged, the second connecting plate (67) is fixedly connected between the second connecting plate (67) and the second connecting plate (67) which are coaxially arranged at the outer side of the second connecting plate (67), the third connecting plate (68) is fixedly connected in the middle of the whole movable pulley frame (61), and the lifting lug (69) is fixedly connected on the second upper plate (64);
The rotary pulley block (5) comprises a rotary pulley frame (51), a fourth pulley (52) and a small pulley (53), the rotary pulley frame (51) comprises a first lug plate (54), a second lug plate (55), a reinforcing plate (56) and two third lug plates (57), two holes are formed in the first lug plate (54), one hole is fixed through a first pin shaft (1), the other hole is used for hinging the fourth pulley (52), the first lug plate (54) and the second lug plate (55) are provided with coaxial through holes, the third lug plates (57) are fixedly connected to the first lug plate (54) and the second lug plate (55), the holes of the two third lug plates (57) are coaxially arranged, the reinforcing plate (56) is fixedly connected to the second lug plate (55), the small pulley (53) is arranged between the two third lug plates (57) of the rotary pulley frame (51), the fourth pulley (52) is arranged between the first lug plate (54) and the second lug plate (55) of the rotary pulley frame (51), and the movable pulley block (5) is required to be fixed under the rotary pulley block (5) in a non-rotary state; in the working state, the pulley block (5) needs to be rotated for 90 degrees, and then is blocked by the first pin shaft (1);
Traction pulley device (4) include fifth pulley (4.1), mount (4.2), pulley yoke (30), second round pin axle (43), third round pin axle (44), bolt (35), backing pin (36), mount (4.2) are installed on cantilever crane (13) through second round pin axle (43), third round pin axle (44) pass mount (4.2) to fix on mount (4.2), fifth pulley (4.1) set up in pulley yoke (30) on mount (4.2), mount (4.2) include first shrouding (45), violently pipe (46), standpipe (47), fourth otic placode (48), fifth otic placode (49), violently pipe (46) both ends rigid coupling first shrouding (45), violently pipe (46) are last to have three through-holes, standpipe (47) one end rigid coupling is in violently pipe (46) one side that has the hole, and the other end rigid coupling first shrouding (45), fourth otic placode (48) are in plane (47), and fifth otic placode (48) are in fifth otic placode (49), and fifth otic placode (33) are included in fifth otic placode (49), fifth otic placode (33) are located to the coaxial board (33) The sixth lug plates (34), the two third side plates (31) keep a certain distance for opening, the connecting plates (32) are fixedly connected to one ends of the two third side plates (31), the other ends of the third side plates (31) are fixedly connected with the sleeves (33), the holes of the two third side plates (31) are coaxially arranged, the sixth lug plates (34) are fixedly connected to one of the third side plates (31), the sleeves (33) are hinged with the fourth lug plates (48) and the fifth lug plates (49) on the fixing frame (4.2), the stop pins (36) are fixed on the third side plates (31), and the stop pins (35) are used for fixing the sixth lug plates (34) on the pulley frame (30) and the fourth lug plates (48) on the fixing frame (4.2);
The amplitude-variable pull rod group (12) is composed of a plurality of pull rods, one end of the amplitude-variable pull rod group is hinged with the movable pulley block (10), and the other end of the amplitude-variable pull rod group is hinged with the arm support (13).
2. A method of installing a luffing jib tower crane tie-bar according to claim 1, comprising the steps of:
The method comprises the steps of (S1) hanging a movable pulley block (10) and a fixed pulley block (8) to a tower top (7) through auxiliary equipment, and simultaneously starting an amplitude changing mechanism (6) to loosen an amplitude changing rope (9);
(S2) a luffing rope (9) passes through a rope arranging pulley (7.1), and then a fixed pulley block (8) is arranged on a connecting plate (7.2) of the tower top (7);
(S3) starting an auxiliary mechanism (2), leading out a traction rope (11), leading out an end of the traction rope (11) to pass through a transition pulley (3), then pass through a fifth pulley (4.1) on a traction pulley device (4), then pass through a rotary pulley block (5) on a movable pulley block (10), and finally return to the traction pulley device (4) to be fixedly connected with a third pin shaft (44) on the traction pulley device (4);
(S4) removing a fourth pin shaft (E) which is connected with the movable pulley block (10) and the fixed pulley block (8), starting an auxiliary mechanism (2), enabling the movable pulley block (10) to move towards the arm support (13) under the action of the traction rope (11), and simultaneously starting the amplitude changing mechanism (6) to loosen the amplitude changing rope (9), and enabling auxiliary equipment to move together with the movable pulley block (10);
(S5) continuously starting the auxiliary mechanism (2), stopping when the movable pulley block (10) moves to the amplitude changing pull rod group (12), and connecting the movable pulley block (10) with the amplitude changing pull rod group (12);
(S6) removing the traction rope (11), winding the traction rope (11) back on the auxiliary mechanism (2), and loosening auxiliary equipment;
and S7, starting the amplitude changing mechanism (6) to tighten the amplitude changing rope (9), and starting the arm support (13) to move.
3. The method for installing a swing arm tower crane tie according to claim 2, wherein: in the step (S1), the variable amplitude rope (9) connects the movable pulley block (10) and the fixed pulley block (8) together before delivery and is wound on the variable amplitude mechanism (6), namely the variable amplitude rope (9) is used for connecting the movable pulley block (10), the fixed pulley block (8) and the variable amplitude mechanism (6) together.
4. The method for installing a swing arm tower crane tie according to claim 2, wherein: in the step (S1), two groups of hanging points are arranged on the movable pulley block (10), the auxiliary equipment hangs the outer hanging point (A) by using a hanging rope, and the other inner hanging point (B) is connected by using a slightly long hanging rope.
5. The method for installing a swing arm tower crane tie according to claim 2, wherein: in the step (S2), before the luffing rope (9) passes through the rope arranging pulley (7.1), the rope blocking pipe (D) is required to be detached, and the luffing rope (9) is prevented from jumping out after being worn.
6. The method for installing a swing arm tower crane tie according to claim 4, wherein: in the step (S3), when the slings of the inner hanging points (B) on the movable pulley block (10) are tightened, the slings of the outer hanging points (A) are detached.
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| CN111186779A (en) * | 2020-02-27 | 2020-05-22 | 徐州建机工程机械有限公司 | Novel crane boom mounting mode of movable arm tower crane |
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