Precise positioning device for steel box girder hoisting

Abstract

The utility model relates to the technical field of bridge construction, in particular to a steel box girder hoisting accurate positioning device which comprises an engineering crane, a positioning mechanism is installed on the outer wall of a hoisting hook of the engineering crane, and an RTK base station is arranged at the tail of the engineering crane. A steel box girder is bound and lifted on a lifting hook of the engineering crane through a plurality of groups of steel wire ropes; the positioning mechanism comprises a mounting box fixedly connected to the outer wall of the lifting appliance of the engineering crane, a rotating table is rotatably connected to the interior of the mounting box, an adjusting motor is fixedly connected to the center of the bottom of the rotating table, a rotating shaft is fixedly connected to the interior of the rotating table, and an adjusting gear is rotatably connected to the outer wall of the rotating shaft; according to the precise positioning device for hoisting of the steel box girder, the positioning mechanism in the device is used for positioning the position of the steel box girder, and the problems that existing conventional hoisting positioning measurement is time-consuming and labor-consuming, and manual measurement conditions are limited in severe weather are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel box girder hoisting and precise positioning device. Background Art

[0002] Steel box girders are generally hoisted by engineering cranes, but the existing steel box girder hoisting still has shortcomings, specifically: the existing conventional hoisting positioning measurement is time-consuming and labor-intensive, and the conditions for manual measurement are limited in severe weather.

[0003] Therefore, a steel box girder hoisting and precise positioning device is needed to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a steel box girder hoisting and precise positioning device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A precise positioning device for hoisting a steel box girder comprises an engineering crane, a positioning mechanism is installed on the outer wall of a lifting hook of the engineering crane, an RTK reference station is arranged at the tail of the engineering crane, and a steel box girder is hoisted on the lifting hook of the engineering crane by binding multiple groups of steel wire ropes;

[0007] The positioning mechanism includes an installation box fixedly connected to the outer wall of the engineering crane hoist, the installation box is rotatably connected to a rotating table inside, an adjusting motor is fixedly connected to the bottom center of the rotating table, a rotating shaft is fixedly connected to the inside of the rotating table, an adjusting gear is rotatably connected to the outer wall of the rotating shaft, a pushing rack is meshingly connected to the bottom of the adjusting gear and in the rotating table, an electric push rod is fixedly connected to the outer wall of the pushing rack at a position away from the rotating shaft, connecting rods are fixedly connected to both sides of the top center of the adjusting gear, an RTK positioning module is fixedly connected to the top of the connecting rod, a signal strength sensor is fixedly connected to the top of the rotating table and on the left side of the rotating shaft, a battery is installed inside the installation box, a protective cover is installed on the top of the installation box, and a controller is installed on the outer wall of the installation box.

[0008] As a preferred solution of the utility model, the installation box, the rotating table and the connecting rod are all made of ABS plastic, the rotating table is designed as a cross-shaped structure, and the connection between the adjusting motor and the installation box, and the electric push rod and the rotating table are all fixed connections.

[0009] As a preferred solution of the utility model, the protective cover is made of wave-transmitting material, and the connection mode between the connecting rod and the pushing rack and the rotating table is a sliding connection.

[0010] As a preferred solution of the utility model, the protective cover is designed as a semicircular structure, and the adjustment motor, electric push rod, RTK positioning module, signal strength sensor and battery are all electrically connected to the controller.

[0011] As a preferred solution of the utility model, the connecting rod passes through and extends outside the rotating platform, and the RTK positioning module is connected to the RTK base station via radio waves.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a precise positioning device for hoisting a steel box girder is designed, and the positioning mechanism in the device is used to locate the position of the steel box girder. The steel box girder is hoisted on the hoisting device of the engineering crane. The controller starts the RTK positioning module and the signal strength sensor. The RTK base station and the RTK positioning module simultaneously receive the signal transmitted by the GPS satellite. The RTK base station obtains the GPS differential correction value by comparing the received GPS positioning information with the known position information. The RTK base station transmits the differential correction value to the RTK positioning module via radio. The RTK positioning module corrects the GPS positioning backward according to the received differential correction value to obtain the corrected position data of the steel box girder, and inputs the corrected data into the cab of the engineering crane. The operator of the engineering crane can intuitively see the spatial coordinates and spatial distance of the box girder, which solves the problem that the existing conventional hoisting positioning measurement is time-consuming and labor-intensive, and the manual measurement conditions are limited in bad weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the installation box of the utility model;

[0016] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0017] In the figure: 1. Engineering crane; 2. Positioning mechanism; 3. RTK base station; 4. Steel box girder; 201. Mounting box; 202. Turntable; 203. Adjusting motor; 204. Rotating shaft; 205. Adjusting gear; 206. Pushing rack; 207. Electric push rod; 208. Connecting rod; 209. RTK positioning module; 210. Signal strength sensor; 211. Battery; 212. Protective cover; 213. Controller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0020] A precise positioning device for hoisting a steel box girder comprises an engineering crane 1, a positioning mechanism 2 is installed on the outer wall of a lifting hook of the engineering crane 1, an RTK reference station 3 is arranged at the tail of the engineering crane 1, and a steel box girder 4 is hoisted on the lifting hook of the engineering crane 1 by binding multiple groups of steel wire ropes;

[0021] In this embodiment, reference Figure 2 and Figure 3 The positioning mechanism 2 includes a mounting box 201 fixedly connected to the outer wall of the lifting device of the engineering crane 1, the mounting box 201 is rotatably connected to a rotating table 202 inside, an adjusting motor 203 is fixedly connected to the bottom center of the rotating table 202, a rotating shaft 204 is fixedly connected to the inside of the rotating table 202, an adjusting gear 205 is rotatably connected to the outer wall of the rotating shaft 204, a pushing rack 206 is meshedly connected to the bottom of the adjusting gear 205 and in the rotating table 202, and the outer wall of the pushing rack 206 is away from the rotating table 202. An electric push rod 207 is fixedly connected at the position of the shaft 204, connecting rods 208 are fixedly connected to both sides of the top center of the adjusting gear 205, and an RTK positioning module 209 is fixedly connected to the top of the connecting rod 208. A signal strength sensor 210 is fixedly connected to the top of the rotating table 202 and on the left side of the rotating shaft 204. A battery 211 is installed inside the installation box 201, a protective cover 212 is installed on the top of the installation box 201, and a controller 213 is installed on the outer wall of the installation box 201;

[0022] The mounting box 201, the rotating table 202 and the connecting rod 208 are all made of ABS plastic. The rotating table 202 is designed in a cross-shaped structure. The adjusting motor 203 and the mounting box 201, and the electric push rod 207 and the rotating table 202 are all connected in a fixed manner. The protective cover 212 is made of wave-transmitting material. The connecting rod 208 and the pushing rack 206 are connected to the rotating table 202 in a sliding manner. The protective cover 212 is designed in a semicircular structure. The adjusting motor 203, the electric push rod 207, the RTK positioning module 209, the signal strength sensor 210 and the battery 211 are all connected to the controller 213 in an electrical manner. The connecting rod 208 passes through and extends to the outside of the rotating table 202. The RTK positioning module 209 communicates with the RTK via radio waves. The base station 3 is connected, and the steel box girder is hoisted on the hoisting device of the engineering crane 1. The controller 213 starts the RTK positioning module 209 and the signal strength sensor 210. The RTK base station 3 and the RTK positioning module 209 simultaneously receive the signals transmitted by the GPS satellite. The RTK base station 3 obtains the GPS differential correction value by comparing the received GPS positioning information with the known position information. The RTK base station 3 transmits the differential correction value to the RTK positioning module 209 via radio. The RTK positioning module 209 corrects the GPS positioning backward according to the received differential correction value to obtain the corrected position data of the steel box girder, and inputs the corrected data into the cab of the engineering crane 1. The operator of the engineering crane 1 can intuitively see the spatial coordinates and spatial distance of the box girder.

[0023] The working process of the utility model is as follows: when the steel box girder hoisting precise positioning device designed by the present invention is in operation, the steel box girder is hoisted on the hoisting device of the engineering crane 1, the controller 213 starts the RTK positioning module 209 and the signal strength sensor 210, the RTK base station 3 and the RTK positioning module 209 simultaneously receive the signal transmitted by the GPS satellite, the RTK base station 3 obtains the GPS differential correction value by comparing the received GPS positioning information with the known position information, the RTK base station 3 transmits the differential correction value to the RTK positioning module 209 via radio, the RTK positioning module 209 corrects the GPS positioning backward according to the received differential correction value, obtains the corrected position data of the steel box girder, and inputs the corrected data into the engineering crane. 1, the operator of the engineering crane 1 can intuitively see the spatial coordinates and spatial distance of the box beam. At the same time, the signal strength sensor 210 will detect the signal strength of the RTK positioning module 209. When the signal strength is lower than the threshold, the controller 213 will start the adjustment motor 203 and the electric push rod 207. The electric push rod 207 will drive the push rack 206 to slide left and right. The push rack 206 that slides left and right will drive the RTK positioning module 209 to rotate left and right through the adjustment gear 205 and the connecting rod 208. The adjustment motor 203 will drive the RTK positioning module 209 to rotate horizontally through the rotating table 202, thereby adjusting the angle of the RTK positioning module 209 so that the RTK positioning module 209 can be aligned with the direction with stronger signal strength.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel box girder hoisting and precise positioning device, comprising an engineering crane (1), characterized in that: A positioning mechanism (2) is installed on the outer wall of the lifting hook of the engineering crane (1), an RTK reference station (3) is arranged at the tail of the engineering crane (1), and a steel box girder (4) is hoisted on the lifting hook of the engineering crane (1) by binding with multiple groups of steel wire ropes; The positioning mechanism (2) comprises a mounting box (201) fixedly connected to the outer wall of the lifting device of the engineering crane (1); a rotating platform (202) is rotatably connected inside the mounting box (201); an adjusting motor (203) is fixedly connected at the bottom center of the rotating platform (202); a rotating shaft (204) is fixedly connected inside the rotating platform (202); an adjusting gear (205) is rotatably connected to the outer wall of the rotating shaft (204); a pushing rack (206) is meshedly connected at the bottom of the adjusting gear (205) and inside the rotating platform (202); and the outer wall of the pushing rack (206) is away from the rotating shaft. An electric push rod (207) is fixedly connected at the position of the shaft (204), connecting rods (208) are fixedly connected on both sides of the top center of the adjusting gear (205), an RTK positioning module (209) is fixedly connected to the top of the connecting rod (208), a signal strength sensor (210) is fixedly connected to the top of the rotating platform (202) and on the left side of the rotating shaft (204), a battery (211) is installed inside the installation box (201), a protective cover (212) is installed on the top of the installation box (201), and a controller (213) is installed on the outer wall of the installation box (201).

2. The steel box girder hoisting and precise positioning device according to claim 1, characterized in that: The installation box (201), the rotating platform (202) and the connecting rod (208) are all made of ABS plastics. The rotating platform (202) is designed as a cross-shaped structure. The connection modes of the regulating motor (203) and the installation box (201), and the electric push rod (207) and the rotating platform (202) are all fixed connections.

3. The steel box girder hoisting and precise positioning device according to claim 1, characterized in that: The protective cover (212) is made of a wave-transmitting material, and the connection between the connecting rod (208) and the pushing rack (206) and the rotating platform (202) is a sliding connection.

4. The steel box girder hoisting and precise positioning device according to claim 1, characterized in that: The protective cover (212) is designed as a semicircular structure, and the adjustment motor (203), the electric push rod (207), the RTK positioning module (209), the signal strength sensor (210) and the battery (211) are all connected to the controller (213) in an electrical manner.

5. The steel box girder hoisting and precise positioning device according to claim 1, characterized in that: The connecting rod (208) passes through and extends outside the rotating platform (202), and the RTK positioning module (209) is connected to the RTK reference station (3) via radio waves.

Images