A measuring device and a method of using the same

Abstract

The present invention provides a carrying device for a measuring device, the carrying device comprises a support frame and a first carrying mechanism and a second carrying mechanism arranged on the support frame, the first carrying mechanism is arranged above the second carrying mechanism, a carrying rod is suspended on the first carrying mechanism, the first carrying mechanism is used to control the lifting and lowering of the carrying rod, the second carrying mechanism is used to fix the carrying rod, the carrying rod is used to install a measuring device that can slide on the carrying rod to achieve measurement of multiple points; a method for using the carrying device is also provided. The carrying device can control the measuring device to measure multiple points, with high measurement efficiency and high accuracy.

Description

Technical Field

[0001] The invention belongs to the field of cable-stayed bridge erection, and in particular relates to a mounting device for a measuring device and a use method thereof. Background Art

[0002] During the hoisting and alignment construction process of the steel truss segmental beams of the highway-railway dual-purpose cable-stayed bridge, the erected beams are affected by the deadweight of the supporting frame and the bending load of the beams to be erected, and the deformation is low on both sides and high in the middle at the interface of the upper bridge deck of the erected beams. The upper bridge deck of the beams to be erected is affected by the hoisting load and deformed in a way that it is high on both sides and low in the middle, while the deformation of the lower bridge deck is less due to the load and can be directly connected and installed. The diagonal rods and the upper chord rods require a large forced force to deform for alignment, so the alignment and installation process is generally carried out according to the alignment process of the lower chord rod, the diagonal rod, and the upper chord rod. Four measurements must be performed during the segmental beam alignment process. The first measurement is to measure the overall position and angle coordinates of the beam to be erected for initial positioning. The second measurement is for alignment measurement and guidance of the lower chord rod. The third measurement is for alignment measurement and guidance of the diagonal rod. The fourth measurement is for alignment measurement and guidance of the upper chord rod.

[0003] At present, the four measurements during the segmental beam alignment process are all manual measurements, that is, the operators use a total station to measure, and the operators need to measure the four points one by one. The measurement efficiency is low and the operating safety of the operators cannot be guaranteed. Summary of the invention

[0004] The object of the present invention is to provide a mounting device for a measuring device capable of measuring multiple points and a method for using the same.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a carrying device for a measuring device, the carrying device comprising a support frame and a first carrying mechanism and a second carrying mechanism arranged on the support frame, the first carrying mechanism being arranged above the second carrying mechanism, a carrying rod being suspended on the first carrying mechanism, the first carrying mechanism being used to control the lifting and lowering of the carrying rod, the second carrying mechanism being used to fix the carrying rod, and the carrying rod being used to install a measuring device that can slide on the carrying rod to realize measurement of multiple points.

[0006] Furthermore, the first carrying mechanism includes a first crossbeam arranged on the upper part of the support frame and a first lifting device for controlling the lifting and lowering of the carrying rod, and the first lifting device is arranged on the first crossbeam.

[0007] Furthermore, the first lifting device includes an electric hoist, and the electric hoist is connected to one end of the carrying rod through a steel wire rope.

[0008] Furthermore, the second carrying mechanism includes a second crossbeam arranged at the lower part of the support frame, and a fixing device for fixing the carrying rod is arranged at one end of the second crossbeam away from the support frame.

[0009] Furthermore, the fixing device includes a fixing sleeve arranged at the end of the second beam and an automatic plug-in pin arranged inside the second beam, the carrying rod is arranged in the fixing sleeve, the upper and lower parts of the carrying rod are respectively provided with a first fixing hole and a second fixing hole, the fixing sleeve is provided with a third fixing hole, and the automatic plug-in pin is used to extend into the first fixing hole or the second fixing hole through the third fixing hole to fix the carrying rod.

[0010] Furthermore, the carrying device is arranged on both sides of the support frame, the first carrying mechanism also includes a first support seat and a first folding device, the second carrying mechanism also includes a second support seat and a second folding device, the first support seat and the second support seat are both fixed on the support frame, one end of the first beam is hinged to the first support seat, and one end of the second beam is hinged to the second support seat, and the first folding device and the second folding device are respectively used to control the rotation of the first beam and the second beam.

[0011] Furthermore, the first folding device includes a first cylinder, one end of which is hinged on the support frame and the other end is hinged on the first beam. The second folding device includes a second cylinder, one end of which is hinged on the second support seat and the other end is hinged on the second beam.

[0012] Furthermore, a slideway is provided on the carrying rod, and the slideway is used to make the measuring device slide vertically along the slideway. A second lifting device is provided on the carrying rod, and the second lifting device is used to control the sliding of the measuring device.

[0013] The present invention also provides a method for using a mounting device of a measuring device, comprising the following steps:

[0014] S1. In the initial state, the carrying rod is at the first position, and the measuring device is controlled to move to the first measuring position to perform preliminary guiding and positioning of the beam to be erected;

[0015] S2, cancel the fixed carrying rod, control the carrying rod to move to the second station, and fix the carrying rod;

[0016] S3. Control the measuring device to move to the workstation corresponding to the point to be measured, and perform alignment and splicing at each location of the beam to be erected.

[0017] Furthermore, in the step S1, the first workstation is a position where the targets of the upper chords of the erected beams and the beams to be erected enter the focal length range of the measuring device.

[0018] Further, in step S2, the second work station is a position where the first fixing hole on the upper portion of the mounting rod is coaxial with the third fixing hole of the fixing sleeve.

[0019] Furthermore, the step S3 comprises: the second lifting device controls the measuring device to move to the top of the lower chord, the diagonal rod and the upper chord of the beam to be erected in sequence to perform measurements, and respectively perform alignment and splicing at various locations of the beam to be erected.

[0020] Furthermore, before step S1, step S0 is also included: controlling the first beam and the second beam to fold toward the outside of the support frame; the method for using the carrying device also includes step S4: canceling the fixed carrying rod, controlling the carrying rod to move to the initial position, fixing the carrying rod, and controlling the first beam and the second beam to fold toward the inside of the support frame.

[0021] Beneficial effects of the present invention:

[0022] 1. The present invention controls the lifting and lowering of the carrying rod by setting a first carrying mechanism, and the measuring device moves vertically on the carrying rod through a second lifting device. The measuring distance has a wide adjustment range, and a set of devices can measure multiple points of the erected beams and the beams to be erected, with high measuring efficiency.

[0023] 2. The present invention fixes the carrying rod by setting a second carrying mechanism, which includes a fixing sleeve and an automatic plug-in pin. The fixing sleeve enables the carrying rod to move only in the vertical direction and limits the horizontal direction. The automatic plug-in pin is inserted into the fixing hole of the carrying rod to further fix the carrying rod, which can reduce the swing of the measuring device during the measurement process, improve the measurement accuracy, and is conducive to improving the splicing quality of the beam to be erected and the erected beam;

[0024] 3. The present invention realizes the integrated construction of measurement and alignment of the bridge crane by arranging the support frame on the bridge crane. The equipment operator can operate the measuring device in the driver's cab, which is conducive to the integration of equipment control operation and improves the degree of automation and intelligent operation of the equipment.

[0025] 4. After the operation is completed, the present invention can be folded toward the support frame column direction, that is, the inner side of the support frame, thereby reducing the interference to the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of the present invention in use;

[0027] Figure 2 A side view of the present invention in use;

[0028] Figure 3 It is a front view of the first carrying mechanism of the present invention;

[0029] Figure 4 is a top view of the first carrying mechanism of the present invention;

[0030] Figure 5 It is a front view of the second carrying mechanism of the present invention;

[0031] Figure 6 is a top view of the second carrying mechanism of the present invention;

[0032] Figure 7 is a side view of the second carrying mechanism of the present invention;

[0033] Figure 8 It is a front view of the present invention in a non-use state;

[0034] Fig. 9 It is a side view of the present invention in a non-use state;

[0035] Description of reference numerals:

[0036] Carrying device 300; first carrying mechanism 301; second carrying mechanism 302; carrying rod 303; ear plate 304; first lifting device 305; second lifting device 306; first crossbeam 307; first support seat 308; second crossbeam 309; second support seat 310; fixing sleeve 311; automatic plug-in pin 312; first fixing hole 313; second fixing hole 314; third fixing hole 315; first folding device 316; second folding device 317; target 318; support frame 319; upper frame 320; column 321; upper bridge deck 322; lower bridge deck 323; upper chord 324; diagonal rod 325; lower chord 326; measuring device 327. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] This embodiment is described by taking the segment beam connection of a highway-railway dual-purpose cable-stayed bridge as an example.

[0039] like Figure 1 As shown, the segmental beam of the railway-road dual-purpose cable-stayed bridge includes an upper deck 322 and a lower deck 323. The upper deck 322 is provided with upper chord rods 324 on both sides along the length direction, and the lower deck 323 is provided with lower chord rods 326 on both sides along the length direction. An oblique rod 325 is provided between the upper chord rod 324 and the lower chord rod 326. When the segmental beam is butt-jointed, four measurements and alignments are required, namely, preliminary alignment of the beam to be erected, precise alignment of the lower chord rod 326, precise alignment of the oblique rod 325, and precise alignment of the upper chord rod 324. Figure 1 The segmental beam on the left side of the middle has been erected, and the segmental beam on the right side is waiting to be erected.

[0040] The carrying device 300 includes a support frame 319 and a first carrying mechanism 301 and a second carrying mechanism 302 arranged on the support frame 319. The support frame 319 is arranged on the bridge crane. The first carrying mechanism 301 is arranged on the outer side of the upper frame 320. The second carrying mechanism 302 is arranged at the lower part of the column 321. A carrying rod 303 is suspended on the first carrying mechanism 301. The first carrying mechanism 301 is used to control the lifting and lowering of the carrying rod 303. The second carrying mechanism 302 is used to fix the carrying rod 303. The carrying rod 303 is used to install a measuring device 327 that can slide on the carrying rod 303 to realize measurement of multiple points.

[0041] In this embodiment, two carrying devices 300 are provided, one on each side of the erected beam, and are capable of measuring both sides of the segmental beam. The carrying rod 303 is close to the end of the erected beam, so that the measuring device 327 provided on the carrying rod 303 can measure the deviation between the erected beam and the beam to be erected.

[0042] The first carrying mechanism 301 includes a first support seat 308, a first crossbeam 307, and a first lifting device 305 for controlling the lifting and lowering of the carrying rod 303. One end of the first crossbeam 307 is hinged to the first support seat 308 through a pin, and the first lifting device 305 is arranged on the first crossbeam 307. The first folding device 316 includes a first oil cylinder, one end of the first oil cylinder is connected to the support frame 319 through an ear plate 304, and the other end is connected to the first crossbeam 307 through the ear plate 304. Both ends of the first oil cylinder are hinged to the ear plate 304. The first folding device 316 is used to control the first crossbeam 307 to fold to the outside or inside of the support frame 319.

[0043] In this embodiment, the first support seat 308 is welded on the upper frame 320, the first crossbeam 307 is a guide rail beam, the first lifting device 305 is an electric hoist, the electric hoist can move on the guide rail beam, and the first lifting device 305 is connected to one end of the carrying rod 303 through a steel wire rope.

[0044] The second carrying mechanism 302 includes a second support seat 310 and a second cross beam 309 arranged at the lower part of the column 321. One end of the second cross beam 309 is hinged to the first support seat 308, and the other end is provided with a fixing device for fixing the carrying rod 303. The second folding device 317 includes a second oil cylinder. One end of the second oil cylinder is connected to the second support seat 310 through the ear plate 304, and the other end is connected to the second cross beam 309 through the ear plate 304. Both ends of the second oil cylinder are hinged to the ear plate 304. The second folding device 317 is used to control the second cross beam 309 to fold to the outside or inside of the support frame 319.

[0045] The fixing device includes a fixing sleeve 311 arranged at the end of the second beam 309 and an automatic plug-in pin 312 arranged inside the second beam 309. The carrying rod 303 is sleeved in the fixing sleeve 311. The upper and lower parts of the carrying rod 303 are respectively provided with a first fixing hole 313 and a second fixing hole 314. The fixing sleeve 311 is provided with a third fixing hole 315. The automatic plug-in pin 312 is used to extend into the first fixing hole 313 or the second fixing hole 314 through the third fixing hole 315 to fix the carrying rod 303.

[0046] In this embodiment, the second support seat 310 is welded to the lower part of the column 321, and the fixing sleeve 311 is coaxial with the carrying rod 303, so that the fixing sleeve 311 can be sleeved in the carrying rod 303, and the fixing sleeve 311 can limit the horizontal movement of the carrying rod 303. The automatic plug-in pin 312 can further fix the carrying rod 303, reduce the shaking of the carrying rod 303, and reduce the measurement error of the measuring device 327. When the automatic plug-in pin 312 is inserted into the first fixing hole 313 of the carrying rod 303, the carrying rod 303 is The distance between the erected beam and the beam to be erected is far, so the measuring device 327 performs preliminary measurement. The operator controls the beam to be erected through the bridge crane to perform preliminary alignment based on the preliminary measurement result. When the automatic plug-in pin 312 is inserted into the second fixing hole 314 of the carrying rod 303, the carrying rod 303 is close to the erected beam and the beam to be erected. The measuring device 327 moves up and down on the carrying rod 303 to measure the deviation of the upper chord 324, the diagonal rod 325 and the lower chord 326 between the erected beam and the beam to be erected, and perform precise alignment.

[0047] The automatic plug-in pin 312 is extended and retracted by the control of the oil cylinder. A proximity switch is provided at one end of the automatic plug-in pin 312 close to the fixing sleeve 311. The proximity switch is used to detect whether the first fixing hole 313 or the second fixing hole 314 is aligned with the third fixing hole 315. When the proximity switch does not detect the carrying rod 303, it means that the first fixing hole 313 or the second fixing hole 314 is aligned with the third fixing hole 315. At this time, the automatic plug-in pin 312 can be controlled to extend.

[0048] During the process of extending and retracting the carrying device 300 , the first oil cylinder and the second oil cylinder are extended and retracted synchronously to ensure that the first crossbeam 307 and the second crossbeam 309 rotate synchronously, so that the carrying rod 303 is extended or retracted into the supporting frame 319 as a whole. In this embodiment, after the piston rods of the first oil cylinder and the second oil cylinder are retracted, the first crossbeam 307 is perpendicular to the first support seat 308, the second crossbeam 309 is perpendicular to the second support seat 310, and the first crossbeam 307 and the second crossbeam 309 are parallel to the length direction of the segmental beam. At this time, the carrying rod 303 is close to the support frame 319 column and will not interfere with the on-site construction equipment; after the piston rods of the first oil cylinder and the second oil cylinder are extended, the first crossbeam 307 and the second crossbeam 309 are turned 90°, the first crossbeam 307 is parallel to the first support seat 308, the second crossbeam 309 is parallel to the second support seat 310, and the first crossbeam 307 and the second crossbeam 309 are perpendicular to the length direction of the segmental beam and are located on both sides of the segmental beam. At this time, the electric hoist can be used to control the movement of the carrying rod 303 to perform preliminary positioning of the beam to be erected. The first oil cylinder is not parallel to the first crossbeam 307, and the second oil cylinder is not parallel to the second crossbeam 309.

[0049] The carrying rod 303 is provided with a slideway, and the slideway is used to make the measuring device 327 slide vertically along the slideway. The carrying rod 303 is provided with a second lifting device 306, and the second lifting device 306 is used to control the sliding of the measuring device 327.

[0050] In this embodiment, the second lifting device 306 is an electric winch, which is equipped with double drums. The measuring device 327 is slidably arranged on the side of the carrying rod 303 close to the beam to be erected through the first mounting seat, and the steel wire ropes at the upper and lower ends of the first mounting seat are respectively wound on the respective drums, thereby realizing the rising and falling of the measuring device 327. The electric winch is installed on the carrying rod 303 through the second mounting seat, and the second mounting seat is welded to the side of the carrying rod 303 away from the beam to be erected.

[0051] The ends of the lower chord rod 326, the diagonal rod 325 and the upper chord rod 324 of the erected beam and the beam to be erected are all provided with targets 318, and the measuring device 327 can capture the target 318, measure the coordinates of the target 318, and calculate the displacement and angle adjustment parameters of the beam to be erected. The measuring device 327 is an industrial camera.

[0052] The method of using the present invention:

[0053] In the initial state, the carrying device 300 is in a retracted state, that is, the first crossbeam 307 and the second crossbeam 309 are parallel to the length direction of the segment beam, that is, the carrying rod 303 is close to the support frame 319 column, and the automatic plug-in pin 312 is inserted into the second fixing hole 314 at the lower part of the carrying rod 303 to fix the carrying rod 303;

[0054] S0, synchronously start the first folding device 316 and the second folding device 317, control the first beam 307 and the second beam 309 to synchronously rotate 90°, the first beam 307 and the second beam 309 are folded to the outside of the support frame 319, at this time, the carrying rod 303 is in the first position, the two carrying rods 303 are respectively located on one side outside the support frame 319, and the top of the carrying rod 303 is close to the electric hoist;

[0055] S1, the second lifting device 306 controls the measuring device 327 to move to the first measuring station to perform preliminary guiding and positioning of the beam to be erected;

[0056] Step S1 is specifically as follows: the measuring device 327 is controlled by an electric winch to move to the first measuring station, that is, a position close to the lower part of the carrying rod 303, so that the targets 318 of the upper chord rods 324 of the erected beams and the beams to be erected enter the focal range of the measuring device 327 (within 20m). The measuring device 327 measures the displacement and angular coordinates of the target 318 of the beam to be erected relative to the target 318 of the erected beam. The measuring system calculates the displacement and angle adjustment parameters of the beam to be erected. The bridge crane guides the beam to be erected to the initial positioning accuracy position, so that the deviation between the beam to be erected and the erected beam enters the range that can be accurately measured by the measuring device 327.

[0057] S2, the fixing device cancels fixing the carrying rod 303, the first carrying mechanism 301 controls the carrying rod 303 to move to the second station, and the fixing device fixes the carrying rod 303 again;

[0058] Step S2 is specifically as follows: the automatic plug-in pin 312 is retracted to allow the carrying rod 303 to move vertically, and the electric hoist controls the carrying rod 303 to move to a position where the first fixing hole 313 on the upper part of the carrying rod 303 is coaxial with the third fixing hole 315 of the fixing sleeve 311; when the proximity switch does not detect the carrying rod 303, the automatic plug-in pin 312 extends out and passes through the third fixing hole 315 and the first fixing hole 313 in sequence to fix the carrying rod 303.

[0059] S3, the second lifting device 306 controls the measuring device 327 to move to multiple points that need to be measured, and aligns the positions of the beams to be erected respectively;

[0060] Step S3 is specifically as follows: the electric winch controls the measuring device 327 to move to 5-8m above the lower chord 326 of the beam to be erected, so that the measuring device 327 can accurately measure the deviation of the lower chord 326 of the erected beam and the beam to be erected. The measuring device 327 measures the displacement and angle coordinates of the beam to be erected relative to the target 318 of the lower chord 326 of the erected beam through the targets 318 on the erected beam and the lower chord 326 of the beam to be erected. The measuring system calculates the displacement and angle adjustment parameters of the beam to be erected and controls the bridge crane to accurately align and splice the lower chord 326 of the beam to be erected with the lower chord 326 of the erected beam.

[0061] Similarly, the electric winch control measuring device 327 moves in turn to 5-8m above the diagonal rod 325 of the beam to be erected and 5-8m above the upper chord rod 324, and respectively performs alignment and splicing of the diagonal rod 325 of the beam to be erected and the diagonal rod 325 of the erected beam, and of the upper chord rod 324 of the beam to be erected and the upper chord rod 324 of the erected beam.

[0062] S4, the fixing device cancels the fixing of the carrying rod 303, the first carrying mechanism 301 controls the carrying rod 303 to move to the initial position, the fixing device fixes the carrying rod 303, and the first folding device 316 and the second folding device 317 control the carrying rod 303 to fold toward the inside of the support frame 319.

[0063] Step S4 is specifically as follows: the automatic plug-in pin 312 is retracted, and the electric hoist controls the carrying rod 303 to move to the initial position. The initial position of the carrying rod 303 is the position of the carrying rod 303 when the second fixing hole 314 at the lower part of the carrying rod 303 is coaxial with the third fixing hole 315 of the fixing sleeve 311. When the proximity switch does not detect the carrying rod 303, the automatic plug-in pin 312 extends out again to fix the carrying rod 303, and the first folding device 316 and the second folding device 317 control the carrying rod 303 to fold 90° toward the inside of the support frame 319.

[0064] The support frame 319 can be directly set on the bridge crane, and the bridge crane can also be used as the support frame 319, so as to realize the integrated construction of measurement and alignment of the bridge crane, so that the carrying mechanism can be used as an auxiliary mechanism of the bridge crane, and the equipment operator can operate the measuring device in the driver's cab, which is conducive to the integration of equipment control operation and improves the degree of automation and intelligent operation of the equipment.

[0065] The above shows and describes the basic principles and main structural features of the present invention. The present invention is not limited to the above examples. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for carrying a measuring device, characterized in that: The carrying device (300) comprises a support frame (319) and a first carrying mechanism (301) and a second carrying mechanism (302) arranged on the support frame (319); the first carrying mechanism (301) is arranged above the second carrying mechanism (302); a carrying rod (303) is suspended on the first carrying mechanism (301); the first carrying mechanism (301) is used to control the lifting and lowering of the carrying rod (303); the second carrying mechanism (302) is used to fix the carrying rod (303); the carrying rod (303) is used to install a measuring device (327) that can slide on the carrying rod (303) to achieve measurement of multiple points; The first carrying mechanism (301) comprises a first crossbeam (307) arranged on the upper part of the support frame (319) and a first lifting device (305) for controlling the lifting and lowering of the carrying rod (303), wherein the first lifting device (305) is arranged on the first crossbeam (307); The second carrying mechanism (302) comprises a second crossbeam (309) arranged at the lower part of the support frame (319), and a fixing device for fixing the carrying rod (303) is arranged at one end of the second crossbeam (309) away from the support frame (319); The first carrying mechanism (301) also includes a first support seat (308) and a first folding device (316), and the second carrying mechanism (302) also includes a second support seat (310) and a second folding device (317). The first support seat (308) and the second support seat (310) are both fixed on a support frame (319), one end of the first beam (307) is hinged to the first support seat (308), and one end of the second beam (309) is hinged to the second support seat (310), and the first folding device (316) and the second folding device (317) are used to control the synchronous rotation of the first beam (307) and the second beam (309).

2. A measuring device carrying device according to claim 1, characterized in that: The first lifting device (305) comprises an electric hoist, and the electric hoist is connected to one end of the carrying rod (303) via a steel wire rope.

3. The measuring device carrying device according to claim 1, characterized in that: The fixing device comprises a fixing sleeve (311) arranged at the end of the second crossbeam (309) and an automatic plug-in pin (312) arranged inside the second crossbeam (309); the carrying rod (303) is arranged in the fixing sleeve (311); the upper part and the lower part of the carrying rod (303) are respectively provided with a first fixing hole (313) and a second fixing hole (314); the fixing sleeve (311) is provided with a third fixing hole (315); and the automatic plug-in pin (312) is used to extend into the first fixing hole (313) or the second fixing hole (314) through the third fixing hole (315) to fix the carrying rod (303).

4. The mounting device for a measuring device according to claim 1, characterized in that: The first folding device (316) includes a first oil cylinder, one end of which is hinged on a support frame (319) and the other end is hinged on a first crossbeam (307); the second folding device (317) includes a second oil cylinder, one end of which is hinged on a second support seat (310) and the other end is hinged on a second crossbeam (309).

5. A measuring device carrying device according to any one of claims 1 to 4, characterized in that: The carrying rod (303) is provided with a slideway, and the slideway is used to make the measuring device (327) slide vertically along the slideway. The carrying rod (303) is provided with a second lifting device (306), and the second lifting device (306) is used to control the sliding of the measuring device (327).

6. A method for using a measuring device carrying device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, in the initial state, the carrying rod (303) is at the first position, and the measuring device (327) is controlled to move to the first measuring position to perform preliminary guiding and positioning of the beam to be erected; S2, cancel the fixing of the carrying rod (303), control the carrying rod (303) to move to the second station, and fix the carrying rod (303); S3, control the measuring device (327) to move to the workstation corresponding to the point to be measured, and respectively perform alignment and splicing of the beams to be erected.

7. The method of use according to claim 6, characterized in that: In the step S1, the first workstation is a position where the target (318) of the upper chord (324) of the beam that has been erected and the beam that is to be erected enters the focal length range of the measuring device (327).

8. The method of use according to claim 6, characterized in that: In the step S2, the second work station is a position where the first fixing hole (313) on the upper part of the carrying rod (303) and the third fixing hole (315) of the fixing sleeve (311) are coaxial.

9. The method of use according to claim 6, characterized in that: The step S3 comprises: the second lifting device (306) controls the measuring device (327) to move successively to the top of the lower chord, the diagonal rod and the upper chord of the beam to be erected to perform measurements, and respectively perform alignment and splicing at various locations of the beam to be erected.

10. The method of use according to any one of claims 6 to 9, characterized in that: Before step S1, step S0 is also included: controlling the first crossbeam (307) and the second crossbeam (309) to fold toward the outside of the support frame (319); the method for using the carrying device also includes step S4: canceling the fixed carrying rod (303), controlling the carrying rod (303) to move to the initial position, fixing the carrying rod (303), and controlling the first crossbeam (307) and the second crossbeam (309) to fold toward the inside of the support frame (319).

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