Cantilever mounting and adjusting device

Abstract

The utility model discloses a cantilever installation adjusting device, and belongs to the technical field of cantilever installation. The technical problems that a hoisting mode is adopted for existing cantilever installation, the requirement for hoisting equipment is high, and the requirement for an assembling site is large are solved. According to the technical scheme, a plurality of gantry shelves are included, and a set of stand columns are installed on a supporting leg, close to the outer side of a cantilever, of each gantry shelf; the outer longitudinal beams are installed at the top ends of the multiple sets of stand columns, and the inner longitudinal beams are installed on the supporting legs, close to the inner sides of the cantilevers, of the multiple gantry shelves; the lifting end face of the jack makes contact with the bottom of the cantilever partition plate, and the outer longitudinal beam and the inner longitudinal beam abut against the outer side of the bottom of the cantilever partition plate and the inner side of the bottom of the cantilever partition plate respectively through inclined wood. The cantilever installing and adjusting device has the beneficial effects that the cantilever installing and adjusting device does not depend on hoisting equipment any more, meanwhile, the requirement for an assembling site is not needed any more, rapid positioning and installing of a cantilever are achieved, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cantilever installation, and in particular relates to a cantilever installation adjustment device. Background Art

[0002] For a steel structure bridge with cantilevers on both sides, the cantilevers on both sides and the middle steel box girder are manufactured independently, and are continuously matched and assembled outside after painting. The cantilever is connected to the middle steel box girder, and its structural feature is that the height gradually decreases from the connection part with the steel box girder. Therefore, the assembly frame of the cantilever is low near the steel box girder and high away from the steel box girder.

[0003] After the middle steel box girder is assembled, the cantilever is installed. Based on the special structure of the cantilever, it is usually installed by hoisting. Figure 7 , Figure 7 A 500T gantry crane is used to ensure the overall installation position of the steel box girder and the safe distance from the gantry crane equipment. The cantilever lifting distance away from the gantry crane is relatively large, which is close to the maximum lifting distance of the gantry crane.

[0004] The traditional hoisting installation method has high requirements on the hoisting radius of the hoisting equipment and takes up valuable assembly space and hoisting resources. Therefore, how to achieve rapid positioning and installation of the cantilever has become an urgent problem that needs to be solved. Utility Model Content

[0005] In view of the technical problem that the existing cantilever installation adopts a hoisting method, which has high requirements for hoisting equipment and a large assembly site, the purpose of the utility model is to provide a cantilever installation adjustment device that no longer relies on hoisting equipment and no longer has requirements for assembly sites, thereby realizing rapid positioning and installation of the cantilever and improving assembly efficiency.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a cantilever installation and adjustment device, comprising a plurality of gantry shelves, each of the gantry shelves corresponding to a partition of the cantilever, and each gantry shelf having a group of columns for fitting the linear shape of the bottom of the cantilever partition installed on the legs close to the outer side of the cantilever; also comprising an outer longitudinal beam and an inner longitudinal beam, the outer longitudinal beam being installed on the top of a plurality of groups of columns, and the inner longitudinal beam being installed on the legs of a plurality of gantry shelves close to the inner side of the cantilever; also comprising a jack for adjusting the position of the cantilever, the lifting end face of the jack being in contact with the bottom of the cantilever partition, and the outer longitudinal beam and the inner longitudinal beam being respectively against the outer side of the bottom of the cantilever partition and the inner side of the bottom of the cantilever partition through inclined wood.

[0007] Furthermore, there are three gantry shelves arranged in parallel, and the three gantry shelves correspond to the three partitions of the cantilever respectively.

[0008] Furthermore, diagonal braces are installed between the outer longitudinal beams and the inner longitudinal beams and the legs of the plurality of gantry shelves respectively, so as to increase the supporting strength of the outer longitudinal beams and the inner longitudinal beams.

[0009] Furthermore, corbels are installed at both ends of the inner sides of the two groups of columns respectively; the jacks are an even number, two of which are arranged on the two corbels respectively, and the remaining even number of jacks are arranged on the outer sides of the two ends of the beams of the two gantry shelves and close to the inner longitudinal beams. The jacks are used to adjust the position of the cantilever to achieve matching assembly of the cantilever and the large section of the steel box girder.

[0010] Furthermore, it also includes a hydraulic flatbed truck placed under the crossbeam of the gantry shelf, and the hydraulic flatbed truck is used to transport the cantilever.

[0011] Furthermore, the gantry rack is a standard tire transport rack.

[0012] Furthermore, the outer longitudinal beam and the inner longitudinal beam are made of double-jointed I-beams, the outer longitudinal beam is used to connect multiple groups of columns, and the inner longitudinal beam is used to connect the legs of multiple gantry shelves.

[0013] Furthermore, the diagonal brace is made of I-beam.

[0014] Furthermore, the jack is a hydraulic jack.

[0015] Furthermore, the column is made of I-beam.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The utility model transforms the cantilever installation from a top-down hoisting method to a bottom-up jacking method. With the cantilever installation adjustment device, the cantilever installation no longer relies on hoisting equipment, eliminating the limitation of hoisting resources, and no longer has requirements for the assembly site, greatly improving the assembly efficiency;

[0018] (2) According to the bottom line of the cantilever partition, the cantilevers on both sides are connected to the large steel box girder section in the middle through the support of a whole composed of multiple gantry racks, columns, outer longitudinal beams, inner longitudinal beams and diagonal braces, and the position of the cantilever is accurately adjusted by jacks to achieve matching assembly of the cantilever and the large steel box girder section. Then, the outer longitudinal beam and the inner longitudinal beam are supported against the bottom of the cantilever partition by diagonal wood to ensure stable positioning. After the outer cantilever frame and the inner cantilever frame are installed, the cantilever installation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the cantilever mounting adjustment device;

[0020] Figure 2 for Figure 1 Schematic diagram of the middle section AA;

[0021] Figure 3 for Figure 1 Schematic diagram of the middle section BB;

[0022] Figure 4 It is a schematic diagram of loading the cantilever workshop;

[0023] Figure 5 This is a schematic diagram of cantilever installation;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure of the local part I;

[0025] Figure 7 It is a schematic diagram of the prior art in the background technology of the utility model that adopts a hoisting method for installation;

[0026] Among them, the figure markings are: 1. gantry shelf; 2. column; 3. corbel; 4. outer longitudinal beam; 5. inner longitudinal beam; 6. diagonal brace; 7. cantilever; 8. hydraulic flatbed truck; 9. jack; 10. diagonal wood; 11. outer cantilever frame; 12. inner cantilever frame; 13. large section of steel box girder; 14. joint. DETAILED DESCRIPTION

[0027] In order to express the technical mode implemented by the present invention clearly, accurately and completely, the present invention will be further described below in conjunction with embodiments and drawings.

[0028] like Figures 1 to 3 As shown, according to the bottom linear shape of the cantilever partition, the cantilever installation adjustment device provided in this embodiment includes a gantry shelf 1, and the gantry shelves 1 are three and arranged in parallel. Each gantry shelf 1 corresponds to a partition of the cantilever, that is, three gantry shelves 1 are arranged longitudinally corresponding to the three partition positions of the cantilever; a group of columns 2 are installed on the supporting legs of each gantry shelf close to the outer side of the cantilever, and the columns 2 are used to fit the bottom linear shape of the cantilever partition. The two ends of the inner sides of the two groups of columns 2 located on both sides of the three groups of columns are respectively installed Install the corbel 3; the outer longitudinal beam 4 and the inner longitudinal beam 5 made of double-jointed I-beams, the outer longitudinal beam 4 is installed on the top of the three groups of columns 2, the outer longitudinal beam 4 connects the three columns 2, the inner longitudinal beam 5 is installed on the legs of the three gantry shelves close to the inner side of the cantilever, and the inner longitudinal beam 5 connects the legs of the three gantry shelves close to the inner side of the cantilever, connecting the three independent gantry shelves into a whole; the outer longitudinal beam 4, the inner longitudinal beam 5 are respectively installed with diagonal braces 6 between the legs of the gantry shelves to increase the support strength of the outer longitudinal beam 4 and the inner longitudinal beam 5. The gantry shelf is a standard transport tire frame; the columns are made of I-beams; the diagonal braces are made of I-beams.

[0029] like Figure 4As shown, in the workshop, the cantilever 7 is sent to the cantilever installation and adjustment device, the outer longitudinal beam 4 contacts the outer side of the bottom of the cantilever partition, the inner longitudinal beam 5 contacts the inner side of the bottom of the cantilever partition, and each gantry shelf corresponds to each partition position of the cantilever; after the cantilever is stabilized, the cantilever is transported out of the workshop by a hydraulic flatbed truck 8 placed under the crossbeam of the gantry shelf.

[0030] like Figure 5 , 6 As shown, the cantilever 7 is transported to the assembly station of the large steel box girder segment 13 outside the field, and is connected with the large steel box girder segment 13 to form a joint 14. The cantilever is roughly positioned by using the longitudinal and transverse movement and hydraulic lifting functions of the hydraulic flatbed truck itself; four jacks 9 are arranged on the cantilever installation and adjustment device in advance, and brackets are installed at both ends of the inner sides of the two groups of columns, two of which are arranged on the two brackets respectively; the other two jacks 9 are arranged at both ends of the crossbeams of the two gantry shelves and close to The outer side of the inner longitudinal beam; the jack is a hydraulic jack, and four hydraulic jacks are used to make precise adjustments to the matching and assembly of the cantilever and the large section of the steel box beam; after the adjustment is completed, the bottom of the cantilever partition is respectively plugged with the outer longitudinal beam and the inner longitudinal beam using the inclined wood 10, and the hydraulic jack is released; finally, the height of the top tooth plate of the outer cantilever tire frame 11 and the inner cantilever tire frame 12 is adjusted to make it completely fit with the bottom of the cantilever partition, and the hydraulic flatbed truck is lowered, and the cantilever installation adjustment device is separated from the bottom of the cantilever partition, completing the installation and adjustment of a cantilever. The above cantilever installation adjustment device is used to install other cantilevers, no longer relying on lifting equipment, making the cantilever installation simple, flexible and efficient.

[0031] The working process actually used for cantilever installation and adjustment in this embodiment is as follows: after the cantilever is assembled in the workshop, the cantilever is hoisted onto the inner longitudinal beam and the outer longitudinal beam of the device of this embodiment by the workshop crane, and the cantilever is transported to the assembly station of the large section of the steel box girder in the field by a hydraulic flatbed truck; it is docked with the large section of the steel box girder, and the cantilever is roughly positioned by the horizontal, longitudinal and jacking functions of the hydraulic flatbed truck, and then the position of the cantilever is adjusted by the jack, so that the cantilever and the large section of the steel box girder are assembled in place; after the position adjustment is completed, the cantilever is respectively tightened with the inner longitudinal beam and the outer longitudinal beam by using inclined wood, and the load system is converted with the outer cantilever frame and the inner cantilever frame, the hydraulic flatbed truck is lowered, the device is driven out of the assembly station, and the next cantilever is installed.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cantilever mounting adjustment device, characterized in that: The invention comprises a plurality of gantry shelves (1), each of which corresponds to a partition of a cantilever, and a group of columns (2) for matching the linear shape of the bottom of the cantilever partition are respectively installed on the supporting legs of each gantry shelf (1) close to the outer side of the cantilever (7); the invention also comprises an outer longitudinal beam (4) and an inner longitudinal beam (5), the outer longitudinal beam (4) being installed on the top of the plurality of groups of columns (2), and the inner longitudinal beam (5) being installed on the supporting legs of the plurality of gantry shelves (1) close to the inner side of the cantilever (7); and the invention also comprises a jack (9) for adjusting the position of the cantilever (7), the lifting end face of the jack (9) being in contact with the bottom of the cantilever partition, and the outer longitudinal beam (4) and the inner longitudinal beam (5) being respectively abutted against the outer side of the bottom of the cantilever partition and the inner side of the bottom of the cantilever partition through an inclined wood (10).

2. The cantilever mounting adjustment device according to claim 1, characterized in that: The gantry shelves (1) are three and are arranged in parallel.

3. The cantilever mounting adjustment device according to claim 1, characterized in that: Diagonal braces are installed between the outer longitudinal beam (4) and the inner longitudinal beam (5) and the supporting legs of the plurality of gantry shelves (1).

4. The cantilever mounting adjustment device according to claim 1, characterized in that: The two ends of the inner sides of the two groups of uprights (2) are respectively installed with brackets (3); the jacks (9) are an even number, two of which are respectively arranged on the two brackets (3), and the other even number of jacks (9) are respectively arranged on the outer sides of the two ends of the crossbeams of the two gantry shelves (1) and close to the inner longitudinal beam (5).

5. The cantilever mounting adjustment device according to claim 1, characterized in that: It also includes a hydraulic flatbed truck (8) placed under the crossbeam of the gantry shelf (1).

6. The cantilever mounting adjustment device according to claim 1, characterized in that: The gantry rack (1) is a standard tire transport rack.

7. The cantilever mounting adjustment device according to claim 1, characterized in that: The outer longitudinal beam (4) and the inner longitudinal beam (5) are made of double-jointed I-beams.

8. The cantilever mounting adjustment device according to claim 3, characterized in that: The diagonal brace (6) is made of I-beam.

9. The cantilever mounting adjustment device according to claim 1, characterized in that: The jack (9) is a hydraulic jack.

10. The cantilever mounting adjustment device according to claim 1, characterized in that: The column (2) is made of I-beam.

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