CN112209254B - Erection method of main cable of cable crane - Google Patents
Erection method of main cable of cable crane Download PDFInfo
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- CN112209254B CN112209254B CN202011127553.5A CN202011127553A CN112209254B CN 112209254 B CN112209254 B CN 112209254B CN 202011127553 A CN202011127553 A CN 202011127553A CN 112209254 B CN112209254 B CN 112209254B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C21/00—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways
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Abstract
The invention relates to a cable crane, in particular to a method for erecting a main cable of the cable crane, which comprises the following steps: installing a lead wire; a cable placing assembly is arranged on one side, far away from the first tower, of the first tower, and the main cable is connected with the lead wire of the universal antenna; the second winch carries out rope winding action, and enables the first connecting point to cross the top of the first tower and the first connecting point to cross the top of the second tower until the first connecting point moves to a position between the second ground anchor and the second tower; one end of the main cable is connected with a second ground anchor in an anchoring mode; and the cable releasing assembly performs cable retracting action, and after the sag of the part of the main cable positioned in the midspan position reaches a specified height, the main cable is connected with the first ground anchor in an anchoring manner, so that the main cable is installed. The method for erecting the main cable of the cable crane realizes the quick erection of the main cable of the cable crane, and only needs to erect one-time lead wire in the whole erection process, thereby greatly saving materials required by construction.
Description
Technical Field
The invention relates to a cable crane, in particular to a method for erecting a main cable of the cable crane.
Background
When a large-span cable crane is adopted for construction, the main cable is the most important bearing structure of the cable crane. The erection and the removal of the main cable are key processes with high difficulty and high risk in the installation of the cable crane.
The existing main cable erection method for the cable crane generally comprises the steps of dragging a main cable to a tower from the ground, lifting the main cable to the tower top, and guiding the main cable to the other side of the cable crane through a river-crossing lead. The main cable is generally larger and longer, and the self weight of the main cable is also larger, so the method of erecting on the ground is gradually eliminated.
At present, a main cable erection method is also adopted, in which a lead wire is erected for multiple times, and the diameter of the lead wire is gradually increased, so that the main cable erection method meets the requirement of traction of a main cable.
However, when the main rope of the cable crane is installed using the lead wire, the connection point between the main rope and the lead wire needs to be solved when reaching the position of the tower top. If the main cable is pulled by erecting the lead wire for many times, the installation efficiency is low, and more resources are consumed. In addition, when the lead is used for dragging the main cable to be installed, the main cable is dragged on the ground due to the self gravity and sags, so that the main cable is abraded, a constructed structure on the ground is damaged, and navigation is influenced at a midspan.
Disclosure of Invention
The invention aims to: aiming at the existing main cable erection in the prior art, the main cable and the lead are installed by using the lead, and the connection point of the main cable and the lead is difficult to pass through the tower top when reaching the position of the tower top; the erection method of the main cable of the cable crane is characterized in that the main cable is pulled by erecting the lead wire of the cable crane for multiple times, the installation efficiency is low, and more resources are consumed.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for erecting a main cable of a cable crane, wherein a first foundation is arranged between a first tower frame and a first ground anchor, a first winch is arranged on the first foundation, a second foundation is arranged between a second tower frame and a second ground anchor, and a second winch is arranged on the second foundation, comprises the following steps:
s1, installing an all-weather lead wire, wherein the all-weather lead wire spans the top of the first tower frame and the top of the second tower frame, one end of the all-weather lead wire is wound on the first winch, and the other end of the all-weather lead wire is wound on the second winch;
s2, arranging a cable laying device assembly on one side, far away from the second tower, of the first tower, and connecting a main cable in the cable laying device assembly with the all-weather lead to form a first connecting point, wherein the first connecting point is located between the first ground anchor and the first tower;
s3, the second winch performs rope withdrawing action, the first connecting point is crossed over the top of the first tower through a first hoisting machine, and the first connecting point is crossed over the top of the second tower through a second hoisting machine until the first connecting point moves to a position between the second ground anchor and the second tower;
s4, one end of the main rope is connected with the second ground anchor in an anchoring mode;
s5, the cable releasing assembly carries out cable retracting action, after the verticality of the part of the main cable, which is located at the midspan position, reaches a designated height, the main cable is connected with the first ground anchor to complete installation of the main cable, and the midspan position is located between the first tower and the second tower.
According to the method for erecting the main cable of the cable crane, the main cable is erected by using the all-weather lead, the first connecting point of the main cable connected with the all-weather lead is quickly turned over the tower top of the first tower frame through the first hoisting machine, and the first connecting point of the main cable connected with the all-weather lead is quickly turned over the tower top of the second tower frame through the second hoisting machine, so that the main cable of the cable crane is quickly erected, and in the whole erecting process, the all-weather lead only needs to be erected once, so that materials required by construction are greatly saved.
Preferably, the first base is further provided with a third winch and a fourth winch, the third winch is provided with a first steel wire rope, the fourth winch is provided with a second steel wire rope,
in the step S3, specifically, the step S,
s31: the second winch performs rope winding action;
s32: when one end of a main rope close to a second winch is pulled to the top of the first tower, connecting the first steel wire rope with the main rope to form a second connection point, wherein the second connection point is located between the first ground anchor and the first tower, and the second connection point is located on one side, close to the first ground anchor, of the first connection point;
s33: when the distance between the second connecting point and the first tower is smaller than the distance between the second connecting point and the first ground anchor, connecting the second steel wire rope with the main rope to form a third connecting point, wherein the third connecting point is positioned between the first ground anchor and the second connecting point;
s34: when the second connection point reaches the top of the first tower, the first steel wire rope is disconnected from the main rope;
s35: the third winch performs cable retracting action to enable the first steel wire rope to reach the first foundation;
s36: and repeating the steps S33-S35, and alternately connecting the main cable with the first steel wire rope and the second steel wire rope in sequence until the first connecting point moves to a position between the second ground anchor and the second tower.
In the main cable traction process, the main cable sags due to dead weight, in order to avoid the influence on midspan navigation caused by large sag of the main cable, after one end of the main cable close to the second winch is dragged to the top of the first tower frame, the first steel wire rope is connected with the main cable, the other end of the first steel wire rope is connected with the third winch to provide power, the third winch and the navigation lead form opposite pulling, and the sag of the main cable is reduced. When the position of the first steel wire rope connected with the main rope exceeds half of the distance between the first tower and the first ground anchor, the main rope behind the connecting position begins to drag the ground, one end of the second steel wire rope is connected with the main rope on the ground, the other end of the second steel wire rope is connected with the fourth winch to provide power, the opposite tension of the first steel wire rope is reduced, the opposite tension is slowly unloaded onto the second steel wire rope, when the second connecting point of the first steel wire rope and the main rope displaces to reach the tower top of the first tower, the first hoisting machine is used for assisting to remove the puller, the first steel wire rope is withdrawn again to the first ground anchor to be connected with the main rope again, and then the opposite tension of the second steel wire rope is slowly unloaded onto the first steel wire rope. The first steel wire rope and the second steel wire rope repeatedly form opposite pulling with the power of the navigation lead, the sag of the main rope is ensured not to contact with a structure on the ground between the first tower and the first ground anchor, and the sag lowest point in the midspan is higher than the maximum navigation height.
In conclusion, according to the method for erecting the main cable of the cable crane, the main cable is erected in river-crossing and river-crossing operation, the risks of channel influence and main cable dragging abrasion are avoided, and the safety and reliability of the main cable of the sealed steel wire rope in the erecting process are greatly improved.
Preferably, a fifth winch is arranged on the second base, a third steel wire rope is arranged on the fifth winch,
the step S4 specifically includes the following steps:
s41: pulling the main rope to the second ground anchor through the skyward lead;
s42: connecting the third steel wire rope with the main rope, and tensioning the third steel wire rope with the main rope;
s43: releasing the connection between the lead wire and the main cable;
s44: and anchoring the main cable to the second ground anchor.
The third steel wire rope is tensioned with the main rope, and the method specifically comprises the following steps: and the third steel wire rope and the main rope bear mutual tension, and the main rope does not rebound or deform to harm the related construction safety when the third steel wire rope is in contact with the connection of the overhead line and the main rope, namely the third steel wire rope is tensioned with the main rope.
When the main cable is dragged to the second ground anchor, the third steel wire rope and the main cable are connected to the position of the main cable after the anchoring length, the other end of the third steel wire rope is connected with a fifth winch, the fifth winch provides power, the traction force on the lead wire of the universal antenna is unloaded to the third steel wire rope, the connection between the lead wire of the universal antenna and the main cable is released, and the main cable is anchored on the second ground anchor.
Preferably, the first ground anchor is connected with a first diverting pulley, a second diverting pulley and a third diverting pulley, and the second ground anchor is connected with a fourth diverting pulley and a fifth diverting pulley, wherein;
the first diverting pulley is matched with the all-weather lead, and the all-weather lead is wound on the first winch after passing around the first diverting pulley;
the second diverting pulley is matched with the first steel wire rope, and the first steel wire rope is connected with the main rope after bypassing the second diverting pulley;
the third diverting pulley is matched with the second steel wire rope, and the second steel wire rope rounds the third diverting pulley and is connected with the main rope;
the fourth diverting pulley is matched with the all-weather lead, and the all-weather lead winds around the fourth diverting pulley and then is wound on the second winch;
the fifth diverting pulley is matched with the third steel wire rope, and the third steel wire rope is connected with the main rope after bypassing the fifth diverting pulley.
The first steering pulley is connected with the first ground anchor, the main rope winds the first steering pulley and then winds the first winch, so that the first steering pulley and the first winch are relatively fixed in position, the rope outlet angle of the first winch is fixed, the stress direction of the first winch is relatively fixed, the construction quality of the first winch is better controlled, and the construction safety of the first winch is guaranteed.
Similarly, the second diverting pulley is arranged, so that the construction quality of the third winch can be better controlled, and the construction safety of the third winch is ensured;
the third diverting pulley is arranged, so that the construction quality of the fourth winch can be better controlled, and the construction safety of the fourth winch is ensured;
the fourth diverting pulley is arranged, so that the construction quality of the second winch can be better controlled, and the construction safety of the second winch is ensured;
the fifth diverting pulley is arranged, so that the construction quality of the fifth winch can be better controlled, and the construction safety of the fifth winch is ensured;
preferably, the step S5 specifically includes the following steps:
s51: the cable releasing assembly performs a cable retracting action, the third winch performs a cable retracting action, and the fourth winch performs a cable retracting action;
s52: and after the sag of the part of the main cable at the midspan position reaches a specified height, connecting the main cable with the first ground anchor in an anchoring manner to complete the installation of the main cable.
Preferably, the step S5 specifically includes the following steps:
s51: the cable releasing assembly performs a cable retracting action, the third winch performs a cable retracting action, and the fourth winch performs a cable retracting action;
s52: and after the sag of the part of the main cable, which is positioned at the midspan position, reaches a specified height, connecting the main cable with the second ground anchor to complete the installation of the main cable.
Preferably, step S1 specifically includes the following steps:
a: lifting the all-weather lead with the first lifting mechanism and enabling the all-weather lead to cross the top of the first tower, and
pulling the lead through to the second tower;
b: drawing the skyward lead across the top of the second tower with the second hoisting machine and to a foundation between the second tower and the second ground anchor;
c: and winding one end of the all-weather lead on the first winch, and winding the other end of the all-weather lead on the second winch.
The method comprises the steps that a lead wire of the whole sky is hoisted by a first hoisting machine and crosses the top of a first tower frame, then the lead wire of the whole sky is dragged to the position of a second tower frame by the first hoisting machine, and the lead wire of the whole sky is turned over the top of the second tower frame by the second hoisting machine, so that the lead wire of the whole sky is erected.
Preferably, the cable releasing assembly is arranged on one side of the first ground anchor far away from the first tower, the main cable penetrates through the first ground anchor, and a door opening for the main cable to penetrate through is formed in the first ground anchor.
Preferably, the main rope through drag the ware with it is connected to lead wire leads to the sky, uses the mode of beating of dragging the ware and incidentally, not only can make main rope and lead wire connection fastening better, more can adjust the sag of main rope in the process of erectting, makes the main rope erect and has avoided the risk of channel influence and main rope dragging wearing and tearing when crossing river and crossing river operation, has promoted safety and reliability of sealed wire rope main rope in the process of erectting greatly.
Preferably, after the step 5, the first winch performs a cable reeling action, and the second winch performs a cable unreeling action at the same time, so that the all-weather lead is restored to the position where the step S2 starts, and then a table of the subsequent main cables can be performed, so that in the whole erection process, the installation of a plurality of main cables can be realized only by erecting the all-weather lead once, and materials required by construction are greatly saved.
Preferably, a first cable saddle is arranged at the top of the first tower, a second cable saddle is arranged at the top of the second tower, and the first cable saddle and the second cable saddle are both matched with the main cable, so that the abrasion of the main cable passing through the first tower or the second tower is reduced.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the erection method of the main cable of the cable crane, the main cable is guided to be erected by using the all-weather lead, the first connecting point, connected with the main cable and the all-weather lead, of the main cable is quickly turned over the tower top of the first tower frame through the first hoisting machine, and the first connecting point, connected with the main cable and the all-weather lead, of the main cable is quickly turned over the tower top of the second tower frame through the second hoisting machine, so that the main cable of the cable crane is quickly erected.
2. According to the method for erecting the main cable of the cable crane, the main cable is erected in river-crossing and river-crossing operation, the risks of channel influence and main cable dragging abrasion are avoided, and the safety and reliability of the main cable of the sealed steel wire rope in the erecting process are greatly improved.
3. According to the method for erecting the main cable of the cable crane, after the traction force on the universal antenna lead is unloaded to the third steel wire rope and the connection between the universal antenna lead and the main cable is released, the construction of anchoring the main cable on the second ground anchor and the construction of returning the universal antenna lead to the state before the traction of the main cable can be simultaneously carried out, so that the construction time is shortened, and the construction efficiency is improved.
4. According to the method for erecting the main cable of the cable crane, the first diverting pulley is connected with the first ground anchor, the main cable is wound on the first winch after passing around the first diverting pulley, so that the positions of the first diverting pulley and the first winch are relatively fixed, the rope outlet angle of the first winch is fixed, the stress direction of the first winch is relatively fixed, the construction quality of the first winch is better controlled, and the construction safety of the first winch is guaranteed.
5. According to the erection method of the main cable of the cable crane, the through-the-air lead is hoisted by utilizing the first hoisting machine and spans the top of the first tower frame, then the through-the-air lead is pulled to the second tower frame by utilizing the first hoisting machine, and the through-the-air lead is turned over to the top of the second tower frame by utilizing the second hoisting machine, so that the erection of the through-the-air lead is realized.
6. According to the method for erecting the main cable of the cable crane, the main cable is connected with the universal sky lead through the dragger, and the main cable and the lead can be connected and fastened better by using a piggybacking mode of the dragger, the sag of the main cable in the erecting process can be adjusted, so that the main cable is erected in river-crossing and river-crossing operation, the risks of channel influence and main cable dragging abrasion are avoided, and the safety and the reliability of the main cable of the sealed steel wire rope in the erecting process are greatly improved.
7. According to the erection method of the main cable of the cable crane, after the step 5, the first winch performs cable winding and simultaneously the second winch performs cable unwinding, so that the all-weather lead is restored to the position where the step S2 starts, and then a table of subsequent main cables can be performed, so that installation of a plurality of main cables can be realized only by erecting the all-weather lead once in the whole erection process, and materials required by construction are greatly saved.
8. According to the erection method of the main cable of the cable crane, the first cable saddle is arranged at the top of the first tower frame, the second cable saddle is arranged at the top of the second tower frame, and the first cable saddle and the second cable saddle are matched with the main cable, so that the abrasion of the main cable when passing through the first tower frame or the second tower frame is reduced.
Drawings
Fig. 1 is an installation schematic diagram of step S2 of the erection method of the main cable of the cable crane of the invention.
Fig. 2 is an installation schematic diagram of step S33 of the erection method of the main cable of the cable crane of the invention.
Fig. 3 is a schematic installation diagram of steps S34 and S35 of the erection method of the main cable of the cable crane of the present invention.
Fig. 4 is an installation schematic diagram of step S36 of the erection method of the main cable of the cable crane of the invention.
Fig. 5 is an installation schematic diagram of step S4 of the erection method of the main cable of the cable crane of the invention.
Fig. 6 is an enlarged schematic view at a in fig. 5 of the present invention.
Icon: 1-a main cable; 2-a payout assembly; 3-a first ground anchor; 4-a second ground anchor; 5-a lead wire; 6-a first tower; 7-a second tower; 8-a first winch; 9-a second hoist; 10-a third hoist; 11-a fourth hoist; 12-a fifth hoist; 13-a first basis; 14-a second basis; 15-a first connection point; 16-a first hoisting machine; 17-a second hoisting machine; 18-a first steel cord; 19-a second steel cord; 20-a second connection point; 21-a third connection point; 22-a third wire rope; 23-a second diverting pulley; 24-a third diverting pulley; 25-a fifth diverting pulley; 26-a fourth diverting pulley; 28-a first cable saddle; 29-a second cable saddle; 30-a first diverting pulley.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1 to 6, the method for erecting a main cable of a cable crane according to the present embodiment includes the following steps:
installing the all-weather lead 5, placing the all-weather lead 5 at the bottom of the first tower 6, lifting one end of the all-weather lead 5 to the top of the first tower 6 by using the first hoisting machine 16, then pulling the all-weather lead 5 (which can pass through the first hoisting machine 16) to the bottom of the second tower 7 opposite to the bank, lifting the all-weather lead 5 by using the second hoisting machine 17 and turning over the top of the second tower 7 until the second foundation 14 is reached, and respectively pulling two ends of the all-weather lead 5 to the first winch 8 and the second winch 9 to complete the installation of the all-weather lead.
The cable disc of the main cable 1 is placed in a cable releasing device at a first ground anchor 3 to be firmly fixed to form a cable releasing device component 2, and after one part of the end part of the main cable 1 is pulled out, the main cable 1 is connected with a lead-through wire 5 at a certain position of the end part by a pulling device. The main rope 1 is pulled to the top of the first tower 6 through the operation of the lead wire 5. A first hoisting machine 16 is adopted to hoist the puller at the top of the first tower 6, the main rope 1 and the piggyback part of the skywire lead 5 are hoisted at the top of the first tower 6, after the main rope 1 reaches the midspan position, the main rope 1 is piggybacked at the cable tray position by using a third winch 10 and a first steel wire rope 18, and in the process of erecting the main rope 1 over a river, the main rope 1 is tensioned and adjusted through the recovery of the first steel wire rope 18, so that the sag of the main rope 1 is within the installation requirement. And finally, the main cable 1 is introduced into a notch of a second ground anchor 4 opposite to the shore, the end part of the main cable 1 is pulled back to the second ground anchor 4 by bypassing the anchoring beam through a fifth winch 12, and a cable clamp is installed for fixing, so that the installation of the main cable 1 is completed.
The construction method for erecting the main cable 1 of the cable crane is shown in the attached figures 1-3.
The main cable 1 is pulled out of the cable releaser assembly 2 through a door opening in the first ground anchor 3 to the front of the first ground anchor 3, and the main cable 1 is connected with the lead wire 5 through a puller. The all-weather lead 5 is a steel wire rope and spans a first tower 6 and a second tower 7, one end of the all-weather lead 5 close to the first ground anchor 3 is wound on the first winch 8, and the other end of the all-weather lead 5 is wound on the second winch 9. The first winch 8 releases the rope and the second winch 9 retracts, so as to drive the main rope 1 to be pulled to the top of the first tower 6 from the first ground anchor 3. After reaching the top of the first tower 6, the main cable 1 and the skyward leading wire 5 are lifted by the first hoisting machine 16 and placed in the groove corresponding to the first cable saddle 28 at the top of the first tower 6, the main cable 1 is further pulled to the top of the second tower 7, and the main cable 1 is similarly placed by the second hoisting machine 17 in the groove corresponding to the second cable saddle 29 at the top of the second tower 7 and passes through the top of the second tower 7 until the main cable 1 is pulled to the second ground anchor 4 for anchoring.
In the traction process of the main rope 1, the main rope 1 sags due to self weight, in order to avoid the phenomenon that the sag of the main rope 1 is large and influence midspan navigation, when one end of the main rope 1 close to the second winch 9 is dragged to the top of the first tower frame 6, the first steel wire rope 18 is connected with the main rope 1, the other end of the first steel wire rope 18 is connected with the third winch 10 to provide power, the power and the on-the-air lead 5 form opposite pulling, and the sag of the main rope 1 is reduced. When the position of the first steel wire rope 18 connected with the main rope 1 exceeds half of the distance between the first tower 6 and the first ground anchor 3, one end of the second steel wire rope 19 is connected with the main rope 1 on the ground, the other end of the second steel wire rope 19 is connected with the fourth winch 11 to provide power, the opposite tension of the first steel wire rope 18 is reduced, the opposite tension is slowly unloaded onto the second steel wire rope 19, when the second connecting point 20 of the first steel wire rope 18 and the main rope 1 is displaced to reach the tower top of the first tower 6, the first hoisting machine 16 is used for assisting in dismounting the puller, the first steel wire rope 18 is retracted back to the first ground anchor 3 and is connected with the main rope 1 again, and then the opposite tension of the second steel wire rope 19 is slowly unloaded onto the first steel wire rope 18. The first wire rope 18 and the second wire rope 19 are repeatedly pulled against the power of the all-weather lead 5, so that the main rope 1 is guaranteed to have a sag which is not contacted with a structure on the ground between the first tower 6 and the first ground anchor 3, the sag lowest point in the midspan is higher than the maximum navigation height, and the midspan position is positioned between the first tower 6 and the second tower 7.
When the main rope 1 is dragged to the second ground anchor 4, the third steel wire rope 22 and the main rope 1 are connected to the position of the main rope 1 after the anchoring length, the other end of the third steel wire rope 22 is connected with the fifth winch 12, the fifth winch 12 provides power, the traction force on the lead wire 5 in the sky is unloaded to the third steel wire rope 22, the connection between the lead wire 5 in the sky and the main rope 1 is released, and the main rope 1 is anchored on the second ground anchor 4. And the third winch 10 and the fourth winch 11 are used for retracting the cable, the cable releaser assembly 2 is used for retracting the cable, and after the midspan sag of the main cable 1 reaches a specified height, the main cable 1 is anchored on the first ground anchor 3 to finish the erection of one main cable 1. The first winch 8 retracts the cable, the second winch 9 releases the cable, and the second main cable 1 is erected after the main cable 1 is in a state before being pulled.
The main cable 1 dismantling method corresponds to the erection method, and the cable can be gradually retracted to complete the dismantling of the main cable 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The method for erecting the main cable of the cable crane is characterized by comprising the following steps: a first foundation (13) is arranged between the first tower (6) and the first ground anchor (3), a first winch (8) is arranged on the first foundation (13), a second foundation (14) is arranged between the second tower (7) and the second ground anchor (4), and a second winch (9) is arranged on the second foundation (14), wherein the method comprises the following steps:
s1, installing a lead wire (5) passing through the sky, wherein the lead wire (5) passing through the top of the first tower (6) and the top of the second tower (7), one end of the lead wire (5) passing through the sky is wound on the first winch (8), and the other end of the lead wire (5) passing through the sky is wound on the second winch (9);
s2, arranging a rope placing device assembly (2) on one side, far away from the second tower (7), of the first tower (6), and connecting a main rope (1) in the rope placing device assembly (2) with the skynet lead (5) to form a first connecting point (15), wherein the first connecting point (15) is located between the first ground anchor (3) and the first tower (6);
s3, the second winch (9) performs rope withdrawing action, the first connecting point (15) is crossed over the top of the first tower (6) through a first hoisting machine (16), and the first connecting point (15) is crossed over the top of the second tower (7) through a second hoisting machine (17) until the first connecting point (15) moves to a position between the second ground anchor (4) and the second tower (7);
s4, one end of the main cable (1) is connected with the second ground anchor (4) in an anchoring way;
s5, performing a cable retracting action by the cable releasing device assembly (2), and after the verticality of the part of the main cable (1) in the midspan position reaches a designated height, connecting the main cable (1) with the first ground anchor (3) in an anchoring way to complete the installation of the main cable (1), wherein the midspan position is located between the first tower (6) and the second tower (7).
2. Method for erecting a main rope of a cable crane according to claim 1, characterised in that a third hoisting machine (10) and a fourth hoisting machine (11) are arranged on the first foundation (13), that the third hoisting machine (10) is provided with a first wire rope (18) and that the fourth hoisting machine (11) is provided with a second wire rope (19),
in the step S3, specifically, the step S,
s31: the second winch (9) performs rope winding action;
s32: after one end of the main rope (1) close to the second winch (9) is pulled to the top of the first tower (6), the first steel wire rope (18) is connected with the main rope (1) to form a second connection point (20), the second connection point (20) is located between the first ground anchor (3) and the first tower (6), and the second connection point (20) is located on one side, close to the first ground anchor (3), of the first connection point (15);
s33: connecting the second wire rope (19) with the main rope (1) to form a third connection point (21) when the distance between the second connection point (20) and the first tower (6) is smaller than the distance between the second connection point (20) and a first ground anchor (3), the third connection point (21) being located between the first ground anchor (3) and the second connection point (20);
s34: when the second connection point (20) reaches the top of the first tower (6), the first steel wire rope (18) is disconnected from the main rope (1);
s35: the third winch (10) performs a rope retracting action to enable the first steel wire rope (18) to reach the first foundation (13);
s36: repeating the steps S33-S35, and alternately connecting the main cable (1) with the first steel wire rope (18) and the second steel wire rope (19) in sequence until the first connecting point (15) moves to a position between the second ground anchor (4) and the second tower (7).
3. Method for erecting a main rope of a cable crane according to claim 2, characterised in that a fifth hoisting machine (12) is arranged on said second foundation (14), that said fifth hoisting machine (12) is provided with a third wire rope (22),
the step S4 specifically includes the following steps:
s41: drawing the main cable (1) to the second ground anchor (4) through the skynet lead (5);
s42: connecting the third steel wire rope (22) with the main rope (1), and tensioning the third steel wire rope (22) with the main rope (1);
s43: releasing the connection between the lead wire (5) and the main cable (1);
s44: anchoring the main cable (1) to the second ground anchor (4).
4. A method of erecting a main cable for a cable crane according to claim 3, wherein: a first diverting pulley (30), a second diverting pulley (23) and a third diverting pulley (24) are connected on the first ground anchor (3), and a fourth diverting pulley (26) and a fifth diverting pulley (25) are connected on the second ground anchor (4), wherein;
the first diverting pulley (30) is matched with the all-weather lead (5), and the all-weather lead (5) is wound on the first winch (8) after being wound around the first diverting pulley (30);
the second diverting pulley (23) is matched with the first steel wire rope (18), and the first steel wire rope (18) is wound around the second diverting pulley (23) and then is connected with the main rope (1);
the third diverting pulley (24) is matched with the second steel wire rope (19), and the second steel wire rope (19) is connected with the main rope (1) after passing around the third diverting pulley (24);
the fourth diverting pulley (26) is matched with the all-weather lead (5), and the all-weather lead (5) is wound on the second winch (9) after passing around the fourth diverting pulley (26);
the fifth diverting pulley (25) is matched with the third steel wire rope (22), and the third steel wire rope (22) is connected with the main rope (1) after passing around the fifth diverting pulley (25).
5. The method for erecting a main cable of a cable crane as recited in claim 3, wherein said step S5 comprises the following steps:
s51: the cable releasing assembly (2) performs a cable retracting action, the third winch (10) performs a cable retracting action, and the fourth winch (11) performs a cable retracting action;
s52: and after the sag of the part of the main cable (1) at the midspan position reaches a specified height, connecting the main cable (1) with the first ground anchor (3) in an anchoring manner to complete the installation of the main cable (1).
6. Method for erecting a main cable of a cable crane according to claim 2, characterised in that:
step S1 specifically includes the following steps:
a: lifting the all-weather lead (5) by the first hoisting machine (16), enabling the all-weather lead (5) to cross the top of the first tower (6), and drawing the all-weather lead (5) to the bottom of the second tower (7);
b: -towing the skyline (5) over the top of the second pylon (7) using the second hoisting machine (17) and towing the skyline (5) to the foundation between the second pylon (7) and the second ground anchor (4);
c: and winding one end of the lead wire (5) on the first winch (8), and winding the other end of the lead wire (5) on the second winch (9).
7. Method for erecting a main rope of a cable crane according to any one of claims 1-6, characterised in that said rope payout assembly (2) is arranged on the side of said first ground anchor (3) remote from said first tower (6), said main rope (1) is passed through said first ground anchor (3), and said first ground anchor (3) is provided with a door opening for passing said main rope (1).
8. Method for erecting a main rope of a cable crane according to any one of claims 1-6, characterised in that the main rope (1) is connected to the lead-through (5) by means of a puller.
9. Method for erecting a main cable of a cable crane according to any one of claims 1 to 6, wherein after step 5, said first winch (8) is operated to reel in and said second winch (9) is operated to reel out, so as to restore said lead wire (5) to the position where said step S2 was started.
10. Method for erecting a main cable of a cable crane according to any one of claims 1-6, characterised in that a first cable saddle (28) is arranged on top of the first tower (6) and a second cable saddle (29) is arranged on top of the second tower (7), said first cable saddle (28) and said second cable saddle (29) being adapted to the main cable (1).
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| CN202011127553.5A CN112209254B (en) | 2020-10-20 | 2020-10-20 | Erection method of main cable of cable crane |
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| CN112209254B true CN112209254B (en) | 2022-07-12 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1041493A1 (en) * | 1982-04-22 | 1983-09-15 | Всесоюзный научно-исследовательский и проектно-конструкторский институт подъемно-транспортного машиностроения | Device for supplying energy from movable crane part to stationary part |
| JPH04106095A (en) * | 1990-08-24 | 1992-04-08 | Ohbayashi Corp | Cable crane |
| CN101177931A (en) * | 2007-12-05 | 2008-05-14 | 中铁大桥局股份有限公司 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
| CN201172597Y (en) * | 2007-12-20 | 2008-12-31 | 中铁大桥局股份有限公司 | Wide span heavy-load cable hoisting machine |
| CN108100888A (en) * | 2017-12-14 | 2018-06-01 | 中交公局海威工程建设有限公司 | A kind of main rope fast erecting installation method |
| CN109371854A (en) * | 2018-10-17 | 2019-02-22 | 中交二航局第二工程有限公司 | The method of cable crane construction large-span suspension bridge stiff girder |
| CN209685181U (en) * | 2018-11-30 | 2019-11-26 | 广西路桥工程集团有限公司 | A kind of cable crane main cable saddle device |
-
2020
- 2020-10-20 CN CN202011127553.5A patent/CN112209254B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1041493A1 (en) * | 1982-04-22 | 1983-09-15 | Всесоюзный научно-исследовательский и проектно-конструкторский институт подъемно-транспортного машиностроения | Device for supplying energy from movable crane part to stationary part |
| JPH04106095A (en) * | 1990-08-24 | 1992-04-08 | Ohbayashi Corp | Cable crane |
| CN101177931A (en) * | 2007-12-05 | 2008-05-14 | 中铁大桥局股份有限公司 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
| CN201172597Y (en) * | 2007-12-20 | 2008-12-31 | 中铁大桥局股份有限公司 | Wide span heavy-load cable hoisting machine |
| CN108100888A (en) * | 2017-12-14 | 2018-06-01 | 中交公局海威工程建设有限公司 | A kind of main rope fast erecting installation method |
| CN109371854A (en) * | 2018-10-17 | 2019-02-22 | 中交二航局第二工程有限公司 | The method of cable crane construction large-span suspension bridge stiff girder |
| CN209685181U (en) * | 2018-11-30 | 2019-11-26 | 广西路桥工程集团有限公司 | A kind of cable crane main cable saddle device |
Non-Patent Citations (1)
| Title |
|---|
| "山区斜拉桥中跨主梁缆索吊机安装技术";韩玉 等;《公路》;20170630;第62卷(第6期);154-157 * |
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| CN112209254A (en) | 2021-01-12 |
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