Heavy-load mover capable of changing direction and crossing steps on high-altitude overhaul stand

Abstract

The utility model discloses a heavy-load mover capable of realizing direction changing and step crossing on a high-altitude overhaul stand, and solves the problem of how to realize 90-degree steering and step crossing of a heavy-load trolley. A heavy-load transfer trolley is arranged on a lower step (1) of the high-altitude maintenance platform, a pair of front lead screw sleeve stand columns (4), a pair of middle lead screw sleeve stand columns (5) and a pair of rear lead screw sleeve stand columns (6) are arranged on the lower bottom face of a trolley body frame (3) of the heavy-load transfer trolley, a front lead screw (7) is connected into the front lead screw sleeve stand columns (4) in a threaded mode, and a rear lead screw (8) is connected into the rear lead screw sleeve stand columns (6) in a threaded mode. The lower end of the front lead screw (7) is movably arranged on a front lead screw bottom end supporting frame (10), and a front walking wheel (11) is arranged on the lower portion of the front lead screw bottom end supporting frame (10) and arranged on a lower step (1) of the high-altitude overhaul stand. According to the utility model, the step crossing and 90-degree steering of the heavy load transfer device are realized when the steam stop valve is conveyed on the high-altitude platform.

Description

Technical Field

[0001] The utility model relates to a heavy-load mover, in particular to a heavy-load mover which can realize direction change and cross steps on a high-altitude maintenance platform. Background Art

[0002] The outside of the cooling tower of the rebuilt thermal power plant is connected to a steam transmission pipe. The diameter of these steam pipes is about 2 meters, and they are arranged in rows and turned to connect to the outside of the top of the cooling tower, which is about 50 meters high. The steam transmission pipes arranged in rows and turned are vertically upward from the ground, and after reaching the top of the cooling tower, they turn 90 degrees and are connected to the top of the cooling tower horizontally in the air. Steam stop valves need to be installed on the top of these steam transmission pipes. Since the steam risers and horizontal pipes of this row have been installed in place, the limited space makes it impossible to hoist the steam stop valves into the air with hoisting equipment, and then install the steam stop valves on each steam pipe one by one. The only way to assemble the steam pipe valves on site is to set up an aerial platform outside the cooling tower. The horizontal and vertical tracks of the transfer trolley are first set up on the aerial platform. However, due to obstacles such as pipelines in the air, steps are partially set up on the aerial platform. The valve is first hoisted onto the heavy-loaded mobile trolley on the aerial platform. Then, the trolley carrying the steam pipe valve is moved to the upper end of the pre-installed steam pipe. Finally, the steam stop valve is installed on the top of the steam riser. During the transportation of the steam stop valve in the air, how to achieve a 90-degree turn of the heavy-loaded trolley and how to achieve the heavy-loaded trolley crossing the steps have become difficult problems that need to be solved during construction. Summary of the Invention

[0003] The utility model provides a heavy-load mover on a high-altitude maintenance platform which can realize direction change and cross steps, solving the technical problem of how to realize 90-degree turning of a heavy-loaded trolley and cross steps.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A heavy-load mover on a high-altitude maintenance platform that can change direction and cross steps includes a step under the high-altitude maintenance platform and a step on the high-altitude maintenance platform. A heavy-load transfer trolley is provided on the step under the high-altitude maintenance platform. A pair of front screw sleeve columns, a pair of middle screw sleeve columns and a pair of rear screw sleeve columns are respectively provided on the lower bottom surface of the body frame of the heavy-load transfer trolley. A front screw is screwed in the front screw sleeve column. The lower end of the front screw is movably provided on the front screw bottom end support frame. A front walking Wheel, the front traveling wheel is arranged on the step under the high-altitude maintenance platform; the middle screw is screwed in the middle screw sleeve column, the lower end of the middle screw is movably arranged on the middle screw bottom end support frame, the middle traveling wheel is arranged at the lower part of the middle screw bottom end support frame, and the middle traveling wheel is arranged on the step under the high-altitude maintenance platform; the rear screw is screwed in the rear screw sleeve column, the lower end of the rear screw is movably arranged on the rear screw bottom end support frame, the rear traveling wheel is arranged at the lower part of the rear screw bottom end support frame, and the rear traveling wheel is arranged on the step under the high-altitude maintenance platform.

[0006] A screw rotation drive motor is arranged on the front screw bottom end support frame, the middle screw bottom end support frame and the rear screw bottom end support frame; a steam stop valve is arranged on the vehicle body frame.

[0007] The utility model realizes the crossing of steps and 90-degree turning of the heavy-load transfer device when transporting the steam stop valve on the high-altitude maintenance platform. It has a simple structure and is easy to operate at high altitude, and can quickly transport the steam stop valve to the installation position of the steam stop valve at the top of the riser. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the utility model;

[0009] Figure 2 This is a structural diagram of the utility model when the front end of the vehicle body enters above the step;

[0010] Figure 3 This is a schematic structural diagram of the utility model when the middle part of the vehicle body enters the top of the step;

[0011] Figure 4 It is a structural schematic diagram of the utility model when all the car lifts enter the top of the steps. DETAILED DESCRIPTION

[0012] The present invention is described in detail below in conjunction with the embodiments:

[0013] A heavy-load mover on an aerial maintenance platform that can change direction and cross steps includes a step 1 below the aerial maintenance platform and a step 2 above the aerial maintenance platform. The step 1 below the aerial maintenance platform and the step 2 above the aerial maintenance platform are arranged in the passage between the steam delivery pipe riser connected to the top of the cooling tower and the cooling tower. A steam delivery horizontal pipe is arranged above the aerial maintenance platform. The tower crane first lifts the steam stop valve to the end of the platform, and then the heavy-load transfer trolley moves the steam stop valve through the step below the aerial maintenance platform. 1 and the step 2 on the high-altitude maintenance platform are transported to the installation position of the steam stop valve for installation; a heavy-load transfer trolley is set on the lower step 1 of the high-altitude maintenance platform, and a pair of front screw sleeve columns 4, a pair of middle screw sleeve columns 5 and a pair of rear screw sleeve columns 6 are respectively set on the lower bottom surface of the car body frame 3 of the heavy-load transfer trolley. A front screw sleeve column 4 is screwed with a front screw 7, and the lower end of the front screw 7 is movably set on the front screw bottom end support frame 10. The lower part of the bottom support frame 10 of the upper screw is provided with a front running wheel 11, and the front running wheel 11 is arranged on the lower step 1 of the high-altitude maintenance platform; the middle screw 8 is screwed in the middle screw sleeve column 5, and the lower end of the middle screw 8 is movably arranged on the middle screw bottom support frame 12, and the lower part of the middle screw bottom support frame 12 is provided with a middle running wheel 13, and the middle running wheel 13 is arranged on the lower step 1 of the high-altitude platform; the rear screw 9 is screwed in the rear screw sleeve column 6, and the rear The lower end of the screw 9 is movably arranged on the rear screw bottom end support frame 14, and a rear running wheel 15 is arranged at the lower part of the rear screw bottom end support frame 14, and the rear running wheel 15 is arranged on the lower step 1 of the high-altitude maintenance platform; the screw and the screw sleeve form three pairs of six legs of the heavy-load transfer trolley, and through the bottom end support frame and the running wheels thereon, it plays a role in supporting the steam stop valve. The heavy-load transfer trolley can be moved on the high-altitude maintenance platform by using tools such as crowbars to realize the transportation of the steam stop valve.

[0014] When the front screw 7 moves to the step 2 on the aerial maintenance platform, the front screw 7 is retracted into the front screw sleeve column 4 by rotating the front screw 7, and the front running wheel 11 is higher than the top surface of the step 2 on the aerial maintenance platform. In this process, the weight of the steam stop valve is supported by a pair of legs where the middle screw 8 is located and a pair of legs where the rear screw 9 is located; then, the front screw 7 is rotated in the opposite direction to make the front running wheel 11 fall on the top surface of the step 2 on the aerial maintenance platform, and the heavy-load transfer trolley is continued to be moved to the left. When the middle screw 8 moves to the step 2 on the aerial maintenance platform, the middle running wheel 13 is higher than the top surface of the step 2 on the aerial maintenance platform by rotating the middle screw 8, and the heavy-load transfer trolley is continued to be moved to the left, so that the middle screw 8 enters Above the step 2 on the aerial maintenance platform, the middle screw 8 is rotated in the opposite direction so that the middle running wheel 13 falls on the top surface of the step 2 on the aerial maintenance platform, and the heavy-load transfer trolley is continued to move to the left. When the rear screw (9) moves to the step 2 on the aerial maintenance platform, the rear screw 9 is rotated so that the rear screw 9 retreats into the rear screw sleeve column 6, and the heavy-load transfer trolley is continued to move to the left so that the rear screw 9 enters above the step 2 on the aerial maintenance platform, and the rear screw 9 is rotated in the opposite direction so that the rear running wheel 15 falls on the top surface of the step 2 on the aerial maintenance platform, thereby completing the heavy-load transfer trolley step-up action; when the heavy-load transfer trolley needs to turn 90 degrees, the running wheel is turned by rotating the screw in sequence, so that the heavy-load transfer trolley is converted from lateral movement to longitudinal movement.

[0015] Screw rotation drive motors are provided on the front screw bottom end support frame 10, the middle screw bottom end support frame 12 and the rear screw bottom end support frame 14, and the rotation of the screw can be achieved by controlling the starting motor; a steam shut-off valve is provided on the vehicle body frame 3.

Claims

1. A heavy-load mover on a high-altitude maintenance platform that can change direction and cross steps, comprising a step below the high-altitude maintenance platform (1) and a step above the high-altitude maintenance platform (2), characterized in that: A heavy-load transfer trolley is provided on the lower step (1) of the high-altitude maintenance platform. A pair of front screw sleeve columns (4), a pair of middle screw sleeve columns (5) and a pair of rear screw sleeve columns (6) are provided on the lower bottom surface of the vehicle frame (3) of the heavy-load transfer trolley. A front screw (7) is screwed into the front screw sleeve column (4). The lower end of the front screw (7) is movably provided on the front screw bottom end support frame (10). A front running wheel (11) is provided at the lower part of the front screw bottom end support frame (10). The front running wheel (11) is provided on the lower step (1) of the high-altitude maintenance platform. (5) is screwed with a middle lead screw (8), the lower end of the middle lead screw (8) is movably arranged on the middle lead screw bottom end support frame (12), a middle running wheel (13) is arranged at the lower part of the middle lead screw bottom end support frame (12), and the middle running wheel (13) is arranged on the lower step (1) of the high-altitude maintenance platform; a rear lead screw (9) is screwed with a rear lead screw sleeve column (6), the lower end of the rear lead screw (9) is movably arranged on the rear lead screw bottom end support frame (14), a rear running wheel (15) is arranged at the lower part of the rear lead screw bottom end support frame (14), and the rear running wheel (15) is arranged on the lower step (1) of the high-altitude maintenance platform.

2. A heavy-load mover capable of changing direction and crossing steps on a high-altitude maintenance platform according to claim 1, characterized in that: A screw rotation drive motor is provided on the front screw bottom end support frame (10), the middle screw bottom end support frame (12) and the rear screw bottom end support frame (14); and a steam stop valve is provided on the vehicle body frame (3).

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