A method for installing a cable crane

Abstract

The application provides a method for installing a cable crane, and relates to the technical field of cable crane installation, and comprises the following steps: dividing the cable crane into a first section, a second section, an extension section, a first pole beam and a second pole beam; lifting the first section, the second section, the extension section, the first pole beam and the second pole beam through a midspan installation system at one time until reaching a preset height; installing the extension section between the first section and the second section, and fixing the first section and the second section with two main cables respectively; and fixing and connecting anchor beams of hoisting equipment on the first section and the second section with the first pole beam and the second pole beam respectively. The application has the effect of improving the installation efficiency of the cable crane.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable crane installation, in particular to a method for installing a cable crane. BACKGROUND

[0002] The cable crane is an important equipment for suspension bridge erection. When the cable crane is in use, the whole is arranged on the main cable for subsequent erection of the steel beam. At present, the cable crane of the suspension bridge mainly adopts tower top portal scattered piece hoisting, and then walks to the midspan installation.

[0003] In actual use, the inventor found that the scattered piece hoisting mode caused the whole installation process to be slow, the main line time to be occupied for too long, and the erection efficiency of the suspension bridge to be seriously affected. SUMMARY

[0004] The problem solved by the present application is how to improve the installation efficiency of the cable crane.

[0005] To solve the above problems, the present application provides a method for installing a cable crane, comprising the following steps:

[0006] The cable crane is divided into a first segment, a second segment, an elongated segment, a first carrying beam and a second carrying beam;

[0007] The first segment, the second segment, the elongated segment, the first carrying beam and the second carrying beam are lifted by the midspan installation system at one time until reaching a preset height;

[0008] The elongated segment is installed between the first segment and the second segment, and the first segment and the second segment are fixed with two main cables respectively;

[0009] The anchor beam of the hoisting equipment on the first segment and the second segment is fixedly connected with the first carrying beam and the second carrying beam respectively.

[0010] Optionally, the midspan installation system comprises:

[0011] A support frame is provided with a first platform at the top for placing the first segment and the second segment, two second platforms are respectively arranged at the two ends of the support frame for placing the first carrying beam and the second carrying beam, an accommodating portion is arranged in the interior of the support frame for accommodating the elongated segment, and the accommodating portion is provided with an inlet and outlet at the top of the support frame.

[0012] Two main cables are respectively connected with the support frame through the first lifting mechanism.

[0013] Optionally, the lifting of the first segment, the second segment, the lengthened segment, the first cross beam and the second cross beam by the midspan installation system until a preset height comprises:

[0014] fixing the first segment and the second segment on the first platform and respectively on both sides of the entrance and exit; accommodating the lengthened segment in the accommodating portion; placing the first cross beam and the second cross beam on the second platform at both ends of the support frame; connecting two main cables with both ends of the support frame through the first lifting mechanism;

[0015] simultaneously starting all the first lifting mechanisms to drive the support frame to rise until a preset height.

[0016] Optionally, after the support frame reaches the preset height, the height of the first segment and the second segment is configured to exceed the main cable and avoid the catwalk.

[0017] Optionally, the limit height of the first segment and the second segment above the main cable is 1 meter.

[0018] Optionally, the midspan installation system further comprises:

[0019] a driving device, the driving device is arranged on the support frame, and the first segment and the second segment are respectively moved relative to the support frame through the driving device;

[0020] a second lifting mechanism, one end of the first segment and the second segment facing each other is respectively provided with the second lifting mechanism.

[0021] Optionally, the installation of the lengthened segment between the first segment and the second segment and the fixation of the first segment and the second segment with two main cables respectively comprises:

[0022] unlocking the first segment and the support frame and the second segment and the support frame;

[0023] starting the driving device to drive the first segment and the second segment to move horizontally until the walking device on the first segment and the second segment is respectively located directly above the main cable;

[0024] lifting the lengthened segment by the second lifting mechanism until the lengthened segment is located between the first segment and the second segment and the lengthened segment is connected with the first segment and the second segment respectively;

[0025] The first lifting mechanism is started, and the support frame is lowered to make the walking devices on the first segment and the second segment contact and be fixed with the main cable respectively.

[0026] Optionally, the midspan installation system further comprises:

[0027] A slide beam is arranged on the top of the support frame.

[0028] The first segment and the second segment are respectively slidably arranged on the slide beam through the transverse distribution beam.

[0029] Optionally, after the anchor beams of the hoisting devices on the first segment and the second segment are fixedly connected with the first yoke beam and the second yoke beam respectively, the method further comprises:

[0030] The connection between the first segment, the second segment and the transverse distribution beam is released, and then the support frame is lowered.

[0031] Optionally, during the lowering of the support frame, when the first yoke beam and the second yoke beam are above the support frame, the first yoke beam and the second yoke beam are rotated to the beam erection direction.

[0032] Compared with the prior art, the method has the following beneficial effects:

[0033] In the installation of the cable crane, the cable crane is first divided into a first segment, a second segment, an extended segment, a first yoke beam and a second yoke beam, that is, when the cable crane is hoisted, it is modularized first, and then the first segment, the second segment, the extended segment, the first yoke beam and the second yoke beam are lifted by the midspan installation system at one time until reaching a preset height; the extended segment is installed between the first segment and the second segment, and the first segment and the second segment are fixed with two main cables respectively; finally, the anchor beams of the hoisting devices on the first segment and the second segment are fixedly connected with the first yoke beam and the second yoke beam respectively. Compared with the prior art of multiple lifting of scattered parts, the whole installation process is effectively accelerated, the installation efficiency of the cable crane is improved, and the erection efficiency of the suspension bridge is effectively improved due to the reduction of the main line occupation time. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The flowchart of the method for installing the cable crane according to the embodiment of the present application Figure 1 ;

[0035] Figure 2 The use state of the midspan installation system according to the embodiment of the present application Figure 1 ;

[0036] Figure 3 Use state of the cross installation system Figure 2

[0037] Figure 4 Use state of the cross installation system Figure 3

[0038] Figure 5 Structure diagram of the support frame

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 1, cross installation system; 11, support frame; 111, first platform; 112, second platform; 113, accommodating part; 114, main frame; 115, support frame; 116, accommodating frame; 12, first lifting mechanism; 13, driving device; 14, second lifting mechanism; 15, slide beam; 16, transverse distribution beam; 2, main cable; 3, first section; 4, second section; 5, lengthened section; 6, first carrying beam; 7, second carrying beam; 8, catwalk. DETAILED DESCRIPTION

[0041] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0042] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0043] As Figure 1 shown, a method for installing a cable crane according to an embodiment of the present application comprises the following steps:

[0044] S100: dividing the cable crane into a first section 3, a second section 4, a lengthened section 5, a first carrying beam 6 and a second carrying beam 7;

[0045] S200: lifting the first section 3, the second section 4, the lengthened section 5, the first carrying beam 6 and the second carrying beam 7 at one time by the cross installation system 1 until reaching a preset height;

[0046] S300: installing the lengthened section 5 between the first section 3 and the second section 4, and fixing the first section 3 and the second section 4 to the two main cables 2 respectively;

[0047] ​S400: Fixing and connecting the anchor beams of the hoisting equipment on the first segment 3 and the second segment 4 with the first purlin beam 6 and the second purlin beam 7 respectively.

[0048] When the cable crane is installed by the method of the embodiment, the cable crane is first divided into the first segment 3, the second segment 4, the lengthened segment 5, the first purlin beam 6 and the second purlin beam 7, that is, when the cable crane is hoisted, it is first modularized, and then the first segment 3, the second segment 4, the lengthened segment 5, the first purlin beam 6 and the second purlin beam 7 are lifted at one time by the midspan installation system 1 until reaching the preset height; then the lengthened segment 5 is installed between the first segment 3 and the second segment 4, and the first segment 3 and the second segment 4 are fixed with the two main cables 2 respectively; finally, the anchor beams of the hoisting equipment on the first segment 3 and the second segment 4 are fixed and connected with the first purlin beam 6 and the second purlin beam 7 respectively, compared with the existing mode of multiple hoisting of scattered parts, the whole installation process is effectively accelerated, and the installation efficiency of the cable crane is improved, and since the main line occupation time is reduced, the erection efficiency of the suspension bridge is effectively improved.

[0049] Optionally, the midspan installation system 1 comprises a support frame 11 and a first lifting mechanism 12, wherein the top of the support frame 11 is provided with a first platform 111 for placing the first segment 3 and the second segment 4, both ends of the support frame 11 are respectively provided with a second platform 112 for placing the first purlin beam 6 and the second purlin beam 7, the inside of the support frame 11 is provided with a containing portion 113 for containing the lengthened segment 5, and the containing portion 113 is provided with an inlet and outlet at the top of the support frame 11; the two main cables 2 are connected with the support frame 11 through the first lifting mechanism 12 respectively.

[0050] Specifically, as shown in Figure 5 the support frame 11 is in the form of a frame structure, which comprises a main frame 114, a support frame 115 and a containing frame 116; both ends of the main frame 114 are open, and the projection shape of the main frame 114 in the vertical section is a right trapezoid, both ends of the main frame 114 are respectively provided with the support frame 115, the containing frame 116 is arranged at the bottom of the main frame 114 and communicates with the inside of the main frame 114, the inside spaces of the two together constitute the containing portion 113, and the containing portion 113 is provided with an inlet and outlet at the top of the main frame 114, wherein the top of the main frame 114 is the first platform 111, and the bottom wall of both ends of the main frame 114 is the second platform 112.

[0051] In the embodiment, the first lifting mechanism 12 comprises an anchor, a rope and a through jack, the anchor is fixed on the main cable 2, one end of the rope is connected with the anchor, and the other end passes through the through jack, and the effect is as shown in Figure 2 Thus, when the through jack works, the stable lifting of the support frame 11 can be realized.

[0052] In other embodiments, the positions of the anchor and the through-jack can be interchanged, that is, the anchor is connected to the support frame 11, and the through-jack is arranged on the main cable 2.

[0053] Optionally, the step S200 comprises:

[0054] The first segment 3 and the second segment 4 are both fixed on the first platform 111 and located on both sides of the entrance and exit; the lengthened segment 5 is accommodated in the accommodating portion 113; the first cross beam 6 and the second cross beam 7 are respectively placed on the second platform 112 at both ends of the support frame 11; and the two main cables 2 are respectively connected to both ends of the support frame 11 through the first lifting mechanism 12.

[0055] Specifically, the hoisting of the first segment 3, the second segment 4, the lengthened segment 5, the first cross beam 6 and the second cross beam 7 is performed by a crane or the like. Meanwhile, after the first segment 3, the second segment 4, the first cross beam 6 and the second cross beam 7 are placed on the support frame 11, foundation fixation, such as bolt fixation, needs to be performed, so as to avoid shaking of the first segment 3, the second segment 4, the first cross beam 6 and the second cross beam 7 during the lifting of the support frame 11.

[0056] All the first lifting mechanisms 12 are synchronously started to drive the support frame 11 to rise until a preset height is reached.

[0057] Specifically, each main cable 2 lifts the support frame 11 through two sets of first lifting mechanisms 12, and when the through-jacks of the first lifting mechanisms 12 work, the support frame 11 can follow to rise and fall, thereby driving the first segment 3, the second segment 4, the lengthened segment 5, the first cross beam 6 and the second cross beam 7 to rise and fall.

[0058] In the embodiment, after the support frame 11 reaches the preset height, the heights of the first segment 3 and the second segment 4 are configured to exceed the main cables 2 and avoid the catwalk 8. Thus, the subsequent transverse movement of the first segment 3 and the second segment 4 is facilitated.

[0059] Specifically, the limit height of the first segment 3 and the second segment 4 above the main cables 2 is 1 meter.

[0060] Optionally, the midspan installation system 1 further comprises a driving device 13 and a second lifting mechanism 14, wherein the driving device 13 is arranged on the support frame 11, and the first segment 3 and the second segment 4 move relative to the support frame 11 through the driving device 13; and one end of each of the first segment 3 and the second segment 4 facing each other is provided with the second lifting mechanism 14.

[0061] In this embodiment, the driving device 13 is a telescopic cylinder, at least one driving device 13 drives the first section 3 to slide horizontally relative to the support frame 11, and at least one driving device 13 drives the second section 4 to move relative to the support frame 11. In this way, the positions of the first section 3 and the second section 4 can be adjusted to facilitate cooperation and fixation with the main cable 2.

[0062] In this embodiment, the second lifting mechanism 14 is a small crane, at least one second lifting mechanism 14 is arranged on the top of one end of the first section 3 facing the second section 4, and at least one second lifting mechanism 14 is arranged on the top of one end of the second section 4 facing the first section 3.

[0063] Optionally, step S300 comprises:

[0064] Releasing the locking between the first section 3 and the support frame 11 and between the second section 4 and the support frame 11.

[0065] Specifically, the bolts for fixation between the first section 3 and the support frame 11 and between the second section 4 and the support frame 11 are removed.

[0066] Starting the driving device 13 to cause the first section 3 and the second section 4 to move transversely until the walking devices on the first section 3 and the second section 4 are respectively located directly above the main cable 2.

[0067] Specifically, the telescopic cylinder is started, and the first section 3 and the second section 4 can be driven by the telescopic cylinder to move backward, that is, the first section 3 and the second section 4 move toward the two sides of the support frame 11 respectively, and when the walking devices on the first section 3 and the second section 4 are respectively located directly above the main cable 2, the telescopic cylinder is stopped, and the final effect is as shown in Figure 3

[0068] The lengthened section 5 is lifted by the second lifting mechanism 14 until the lengthened section 5 is located between the first section 3 and the second section 4, and the lengthened section 5 is connected with the first section 3 and the second section 4 respectively.

[0069] Specifically, after the fixation of the first section 3 and the second section 4 is completed, the lifting tool of the second lifting mechanism 14 is lowered to cause it to be connected with the lengthened section 5, and then the second lifting mechanism 14 is started to lift the lengthened section 5 until the lengthened section 5 is located between the first section 3 and the second section 4, at this time, the lengthened section 5 corresponds to the connecting lug plates of the first section 3 and the second section 4, and the assembly of the first section 3, the second section 4 and the third section can be realized by locking through the connecting pin.

[0070] The first lifting mechanism 12 is started to lower the support frame 11 so that the walking devices on the first section 3 and the second section 4 are respectively in contact with the main cable 2 and are fixed; ​

[0071] Specifically, the traveling devices on the first segment 3 and the second segment 4 are fixed to the main cable 2 by a hoop and can travel on the main cable 2.

[0072] Optionally, the midspan installation system 1 further comprises slide beams 15 and transverse distribution beams 16, wherein the slide beams 15 are arranged on the top of the support frame 11; the first segment 3 and the second segment 4 are respectively arranged on the slide beams 15 by the transverse distribution beams 16.

[0073] Specifically, the top of the support frame 11 is provided with two parallel and spaced slide beams 15, at least one transverse distribution beam 16 is connected to the bottom of the first segment 3, at least one transverse distribution beam 16 is connected to the bottom of the second segment 4, and each transverse distribution beam 16 is arranged on the two slide beams 15 by a guide rail and a track.

[0074] Optionally, after the step S400, the method further comprises:

[0075] The connection between the first segment 3 and the second segment 4 and the transverse distribution beam 16 is released, and then the support frame 11 is lowered, as shown in Figure 4 .

[0076] Specifically, during the lowering of the support frame 11, when the first carrying beam 6 and the second carrying beam 7 are located above the support frame 11, the first carrying beam 6 and the second carrying beam 7 are rotated to the beam erection direction, that is, rotated to the direction parallel to the main cable, thereby being used for hoisting the steel beam.

[0077] It should be understood by the reader that the description in the description of the present application refers to the description of the specific features, structures, materials or characteristics described in connection with the embodiment or example as meaning that the specific features, structures, materials or characteristics are contained in at least one embodiment or example of the present application. In the description, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the description and the features of the different embodiments or examples without contradiction.

[0078] Although the present application is disclosed as above, the protection scope of the present application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications will fall within the protection scope of the present application.

Claims

1. A method for installing a cable-mounted crane, characterized in that: The following steps are involved: The cable-mounted crane is divided into a first section (3), a second section (4), an extended section (5), a first shoulder pole beam (6), and a second shoulder pole beam (7); The first segment (3), the second segment (4), the extended segment (5), the first shoulder beam (6) and the second shoulder beam (7) are lifted at once by the mid-span installation system (1) until they reach a preset height; wherein the mid-span installation system (1) comprises a support frame (11) and a first lifting mechanism (12); a first platform (111) is provided on the top of the support frame (11) for placing the first segment (3) and the second segment (4); second platforms (112) are provided at both ends of the support frame (11) for placing the first shoulder beam (6) and the second shoulder beam (7); a receiving portion (113) is provided inside the support frame (11); the receiving portion (113) is used to accommodate the extended segment (5); and an inlet and outlet are provided on the top of the support frame (11); two main cables (2) are connected to the support frame (11) respectively through the first lifting mechanism (12); The method of lifting the first segment (3), the second segment (4), the extended segment (5), the first shoulder beam (6) and the second shoulder beam (7) at one time by the mid-span installation system (1) until reaching a preset height comprises: The first segment (3) and the second segment (4) are both fixed on the first platform (111) and are respectively located on both sides of the inlet and outlet; the extended segment (5) is accommodated in the accommodating portion (113); the first shoulder beam (6) and the second shoulder beam (7) are respectively placed on the second platform (112) at both ends of the support frame (11); the two main cables (2) are respectively connected to the two ends of the support frame (11) through the first lifting mechanism (12); Synchronously starting all the first lifting mechanisms (12) to drive the support frame (11) to rise until it reaches a preset height; Installing the extension segment (5) between the first segment (3) and the second segment (4), and fixing the first segment (3) and the second segment (4) to two main cables (2) respectively; The anchor beams of the lifting equipment on the first segment (3) and the second segment (4) are fixedly connected to the first shoulder pole beam (6) and the second shoulder pole beam (7), respectively.

2. The method for installing a cable-mounted crane according to claim 1, wherein: After the support frame (11) reaches a preset height, the heights of the first segment (3) and the second segment (4) are configured to exceed the main cable (2) and avoid the catwalk (8).

3. The method for installing a cable-mounted crane according to claim 2, wherein: The maximum height of the first section (3) and the second section (4) above the main cable (2) is 1 meter.

4. The method for installing a cable-mounted crane according to claim 1, wherein: The mid-span installation system (1) further comprises: A driving device (13), the driving device (13) being arranged on the support frame (11), and the first segment (3) and the second segment (4) respectively moving relative to the support frame (11) via the driving device (13); A second lifting mechanism (14) is provided at the top of one end of the first segment (3) and the second segment (4) facing each other.

5. The method for installing a cable-mounted crane according to claim 4, wherein: The steps of installing the extension segment (5) between the first segment (3) and the second segment (4), and fixing the first segment (3) and the second segment (4) to two main cables (2) respectively include: Release the lock between the first segment (3) and the support frame (11), and between the second segment (4) and the support frame (11); Starting the driving device (13) to cause the first segment (3) and the second segment (4) to move laterally until the running devices on the first segment (3) and the second segment (4) are respectively located directly above the main cable (2); The second lifting mechanism (14) drives the extended segment (5) to rise until the extended segment (5) is located between the first segment (3) and the second segment (4), and the extended segment (5) is connected to the first segment (3) and the second segment (4) respectively; The first lifting mechanism (12) is started, and the support frame (11) is lowered so that the running devices on the first segment (3) and the second segment (4) are respectively in contact with the main cable (2) and fixed.

6. The method for installing a cable-mounted crane according to claim 1, wherein: The mid-span installation system (1) further comprises: A slide beam (15), the slide beam (15) being arranged on the top of the support frame (11); A transverse distribution beam (16), wherein the first segment (3) and the second segment (4) are respectively slidably arranged on the slideway beam (15) via the transverse distribution beam (16).

7. The method for installing a cable-mounted crane according to claim 6, wherein: After the anchor beams of the lifting equipment on the first segment (3) and the second segment (4) are fixedly connected to the first shoulder beam (6) and the second shoulder beam (7), the method further comprises: The connection between the first segment (3) and the second segment (4) and the transverse distribution beam (16) is released, and then the support frame (11) is lowered.

8. The method for installing a cable-mounted crane according to claim 7, wherein: During the lowering process of the support frame (11), when the first shoulder pole beam (6) and the second shoulder pole beam (7) are located above the support frame (11), the first shoulder pole beam (6) and the second shoulder pole beam (7) are rotated to the beam erection direction.

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