Simple and feasible gantry member hoisting inclination angle fine adjustment method

Abstract

The invention relates to the technical field of inclination angle fine adjustment, in particular to a simple and easy gantry member hoisting inclination angle fine adjustment method. In order to solve the problem that a portal frame is difficult to be accurately positioned at one time due to alignment welding precision of portal frame components and welding position deviation of lifting lugs, the following technical scheme is provided: the method comprises the following steps of: 1, calculating a lifting point position of a steel wire rope and the length of the used steel wire rope through lofting; secondly, a lifting lug is welded to the portal; thirdly, an adjusting device is arranged on the steel wire rope; fourthly, the two ends of a steel wire rope are connected with the lifting lugs through steel lifting rings correspondingly; fifthly, the steel wire rope is hung on a lifting hook of lifting equipment, the portal frame is lifted, and meanwhile the inclination angle of the portal frame is observed; and 6, the hoisting equipment puts down the portal frame, and the length of the steel wire rope is adjusted through the adjusting device according to the deviation of the inclination angle. The lifting operation time can be shortened, the construction cost is reduced, potential safety hazards are eliminated, and the project progress and quality are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of inclination angle fine adjustment, and in particular to a simple and feasible method for fine adjustment of the inclination angle of a portal frame component hoisting. Background Art

[0002] In the field of industrial construction, the secondary mixing of materials in large coal homogenization warehouses is crucial, and the lifting of large gantry is a key link to achieve this goal. When large gantry is used for material mixing, the lifting workload is huge, and the lifting difficulty is extremely high due to factors such as the complex working environment and the structural characteristics of the gantry itself.

[0003] In order to meet the needs of material extraction operations above the material pile, the gantry usually needs to have a specific tilt angle when it is installed. At present, conventional lifting methods mainly rely on large crawler cranes. However, in the actual operation process, since the welding accuracy of each gantry component is difficult to achieve absolute accuracy, and the welding position of the lifting lugs inevitably has deviations, this results in the gantry often not being able to be accurately positioned at one time when using a large crawler crane for lifting. In view of this, the present invention proposes a simple and easy method for fine-tuning the tilt angle of the gantry component hoisting. Summary of the invention

[0004] The purpose of the present invention is to propose a simple and easy method for fine-tuning the inclination angle of portal frame components during hoisting, in order to solve the problem in the background technology that the portal frame is difficult to be accurately positioned at one time due to the deviation of the welding accuracy of the portal frame components and the welding position of the lifting lugs.

[0005] The technical solution of the present invention is a simple and easy method for fine-tuning the inclination angle of portal frame components during hoisting, comprising the steps of: calculating the lifting point position of the wire rope and the length of the wire rope used by laying out; welding the lifting lugs to the portal frame; setting an adjustment device on the wire rope; connecting the two ends of the wire rope to the lifting lugs through steel lifting rings respectively; hooking the wire rope with the lifting equipment's hook and lifting the portal frame, while observing the inclination angle of the portal frame; lowering the portal frame with the lifting equipment, and adjusting the length of the wire rope through the adjustment device according to the deviation of the inclination angle; and lifting the portal frame by the lifting equipment.

[0006] Optionally, the above-mentioned adjustment device includes two groups of side panels, two groups of fixing rods are fixedly connected between the two groups of side panels, the two groups of side panels are fixedly connected to a connecting plate on one side close to the lifting ring, a positioning rod is installed on the side of the connecting plate away from the side panel, and the end of the positioning rod away from the connecting plate is fixedly connected to a fixing ring, and the locking rod of the steel lifting ring is passed through the fixing ring.

[0007] Optionally, the sides of the two groups of side panels are fixedly connected with fixing plates, both sides of the fixing plates are connected with inclined reinforcing plates between the side panels, and the ends of the two groups of fixing plates away from the side panels are commonly fixedly connected with an action plate.

[0008] Optionally, a threaded sleeve is provided on the side of the action plate away from the side plate, and a limit ring is installed on the outer ring of the threaded sleeve close to one end of the action plate. The outer side of the limit ring is rotatably connected to a limit block, and the limit block is fixedly connected to the side of the action plate.

[0009] Optionally, a threaded rod is threadedly connected in the threaded sleeve, one end of the threaded rod is fixedly connected to a movable plate, the movable plate is arranged on the side of the action plate close to the side plate, two groups of sliding plates are fixedly connected to the side of the movable plate away from the action plate, a mounting rod is fixedly connected between the two groups of sliding plates, and a first pulley is rotatably connected to the mounting rod via a bearing.

[0010] Optionally, both sets of fixed rods are rotatably connected to a second pulley via a bearing.

[0011] Optionally, two groups of symmetrically arranged blocks are installed on opposite sides of the two groups of side panels, and the two groups of sliding plates are respectively slidably connected between the two groups of blocks.

[0012] Optionally, the threaded sleeve outer ring fixing sleeve is provided with a handwheel.

[0013] Optionally, first positioning rings are provided on both sides of the first pulley, and two groups of the first positioning rings are sleeved and installed on the mounting rod.

[0014] Optionally, second positioning rings are provided on both sides of the second pulley, and two groups of the second positioning rings are sleeved and installed on the fixing rod.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] The present invention provides an adjustable length adjustment device on the wire rope, which can accurately adjust the length of the wire rope according to the deviation of the gantry tilt angle, thereby achieving fine adjustment of the gantry tilt angle, effectively solving the problem that the gantry is difficult to accurately position at one time, avoiding the problems of time extension, cost increase and safety hazards caused by multiple adjustments, and ensuring the progress and quality of the project.

[0017] The threaded sleeve is further rotated by the hand wheel to drive the threaded rod to move, thereby adjusting the length of the wire rope. The operation is simple and convenient, and it is convenient for the operator to control. At the same time, the double pulley structure, positioning ring, limit device and clamping block in the adjustment device ensure the smooth movement of each component during the adjustment process, improve the accuracy and stability of the adjustment of the wire rope length, make the entire gantry hoisting tilt angle fine-tuning process more reliable, and is suitable for the hoisting of various inclined components;

[0018] In summary, the present invention can shorten the hoisting operation time, reduce construction costs, eliminate potential safety hazards, and ensure project progress and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Provide a schematic diagram of the installation structure of the regulating device;

[0020] Figure 2 is a schematic diagram of the structure of the regulating device;

[0021] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the threaded sleeve;

[0023] Figure 5 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 6 for Figure 2 A magnified schematic diagram of point B in the middle.

[0025] Reference numerals:

[0026] 1. Adjusting device; 11. Side plate; 12. Fixed rod; 13. Connecting plate; 14. Positioning rod; 15. Fixed ring; 16. Fixed plate; 17. Reinforcement plate; 18. Action plate; 19. Second pulley; 110. Threaded sleeve; 111. Limiting ring; 112. Limiting block; 113. Threaded rod; 114. Moving plate; 115. Sliding plate; 116. Mounting rod; 117. First pulley; 118. Block; 119. Handwheel; 120. First positioning ring. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] The present invention provides a simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting, comprising the steps of: first, calculating the position of the hoisting point of the steel wire rope and the length of the steel wire rope used by setting out;

[0034] Step 2: Weld the lifting lugs to the door frame;

[0035] Step 3: Setting the adjusting device 1 on the steel wire rope;

[0036] Step 4: Connect the two ends of the wire rope to the lifting ears through steel lifting rings;

[0037] Step 5: Hook the lifting hook of the lifting equipment onto the wire rope and lift the gantry, while observing the inclination angle of the gantry;

[0038] Step 6: Use the lifting equipment to lower the gantry, and adjust the length of the wire rope through the adjustment device 1 according to the deviation of the tilt angle;

[0039] Step seven: lift the gantry using lifting equipment.

[0040] Embodiment 2

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, based on the first embodiment, the above-mentioned adjustment device 1 includes two groups of side panels 11, and two groups of fixing rods 12 are fixedly connected between the two groups of side panels 11. The two groups of side panels 11 are connected as a whole through the fixing rods 12 to ensure the stability of the structure. The stable structure can withstand various stresses during the hoisting process and ensure the normal operation of the adjustment device 1. The two groups of side panels 11 are fixedly connected to a connecting plate 13 on one side close to the lifting ring. A positioning rod 14 is installed on the side of the connecting plate 13 away from the side panel 11. The end of the positioning rod 14 away from the connecting plate 13 is fixedly connected to a fixing ring 15, and the fixing ring 15 is connected to the side panel 11 through the positioning rod 14 and the connecting plate 13. The locking rod of the steel lifting ring is inserted into the fixing ring 15, which is convenient for connecting the adjustment device 1 with the steel lifting ring, thereby determining the position of the adjustment device 1. Accurate position determination can ensure that the adjustment device 1 can accurately and effectively adjust the wire rope.

[0042] For further information, see Figure 2 , Figure 3 , Figure 4 as well as Figure 6The sides of the two sets of side plates 11 are fixedly connected with a fixing plate 16, and both sides of the fixing plate 16 are connected to the side plates 11 with an inclined reinforcement plate 17. The reinforcement plate 17 is used to strengthen the strength of the fixing plate 16. The high-strength fixing plate 16 can better support and fix the subsequent components and ensure the performance of the adjustment device 1. The two sets of fixing plates 16 are fixedly connected with an action plate 18 at one end away from the side plate 11. The position of the action plate 18 is fixed, providing a stable installation foundation for subsequent components such as the threaded sleeve 110. The side of the action plate 18 away from the side plate 11 is provided with a threaded sleeve 110. The outer ring of the threaded sleeve 110 close to the end of the action plate 18 is provided with a limit ring 111. The outer side of the limit ring 111 is rotatably connected to the limit block 112. The limit block 112 is fixedly connected to the side of the action plate 18. The setting of the limit ring 111 and the limit block 112 allows the threaded sleeve 110 to rotate in place, ensuring that the position of the threaded sleeve 110 is stable when rotating and adjusting, thereby achieving accurate adjustment of the threaded rod 113. A threaded rod 113 is threadedly connected in the threaded sleeve 110. When the threaded sleeve 110 rotates, it drives the threaded rod 113 to move along its length direction. Through precise thread transmission, the position of the threaded rod 113 is accurately controlled, thereby achieving accurate adjustment of the length of the wire rope. A moving plate 114 is fixedly connected to one end of the threaded rod 113. The moving plate 114 is arranged on the side of the action plate 18 close to the side plate 11. When the threaded rod 113 moves, it drives the moving plate 114 to move between the two groups of fixed plates 16. Two groups of sliding plates 115 are fixedly connected to the side of the moving plate 114 away from the action plate 18. When the moving plate 114 moves, it drives the two groups of sliding plates 115 to move synchronously. A mounting rod 116 is fixedly connected between the two sets of sliding plates 115, and a first pulley 117 is rotatably connected to the mounting rod 116 through a bearing. When the sliding plate 115 moves, the first pulley 117 is driven to move synchronously through the mounting rod 116. The first pulley 117 that rotates flexibly can smoothly bend the steel wire rope during the movement, thereby adjusting the length of the steel wire rope. The second pulley 19 is rotatably connected to the two sets of fixed rods 12 through bearings. The steel wire rope passes through the two sets of second pulleys 19 and the first pulley 117, so that when the first pulley 117 rotates, the steel wire rope is driven to bend, thereby adjusting the length of the steel wire rope. Through the double pulley structure, the adjustment accuracy and stability of the steel wire rope are increased. Two groups of symmetrically arranged blocks 118 are installed on opposite sides of the two groups of side plates 11. The two groups of sliding plates 115 are respectively slidably connected between the two groups of blocks 118. The setting of the blocks 118 is used to limit the sliding plates 115 so that the sliding plates 115 move smoothly, thereby ensuring the smooth movement of the first pulley 117. The smooth movement ensures the stability and reliability of the wire rope adjustment process. The outer ring fixed sleeve of the threaded sleeve 110 is provided with a hand wheel 119. The setting of the hand wheel 119 facilitates the rotation of the threaded sleeve 110, facilitates the manual operation of the operator, and improves the convenience of adjustment.First positioning rings 120 are provided on both sides of the first pulley 117. Two sets of first positioning rings 120 are sleeved and installed on the mounting rod 116. The first positioning rings 120 prevent the first pulley 117 from shifting, ensuring that the first pulley 117 always adjusts the wire rope in the correct position. Second positioning rings are provided on both sides of the second pulley 19. Two sets of second positioning rings are sleeved and installed on the fixing rod 12. The second positioning rings prevent the second pulley 19 from shifting, ensuring that the second pulley 19 stably assists in adjusting the wire rope.

[0043] In this embodiment, step 1, using professional layout tools and calculation methods, according to the design parameters of the gantry, the tilt angle requirements and the performance parameters of the lifting equipment, the lifting point position of the wire rope and the exact length of the wire rope required are accurately calculated. During the calculation process, the data needs to be repeatedly checked to ensure the accuracy of the calculation results, providing a reliable basis for subsequent lifting.

[0044] Step 2: Select appropriate welding process and welding materials, and weld the lifting lug accurately to the preset position of the mast. Before welding, clean the impurities in the welding part, and strictly control the welding quality during the welding process to ensure that the weld is firm and free of defects such as false welds and cracks. After welding, perform flaw detection to ensure the reliability of the connection between the lifting lug and the mast.

[0045] Step 3: Install the adjusting device 1 on the selected wire rope according to the design requirements. Pay attention to the direction and position of the adjusting device 1 during installation to ensure that it can normally play the role of adjusting the length of the wire rope.

[0046] Step 4: Connect the two ends of the wire rope to the lifting lugs on the gantry through the steel lifting rings. When connecting, ensure that the steel lifting rings and lifting lugs fit tightly and are firmly fixed to prevent loosening or falling off during the lifting process.

[0047] Step 5: Start the lifting equipment, slowly hook the hook on the wire rope, and lift the gantry steadily. During the lifting process, arrange professionals to use angle measuring instruments to observe the tilt angle of the gantry in real time, compare it with the tilt angle required by the design, and record the angle deviation data.

[0048] Step six, according to the observed deviation of the gantry tilt angle, slowly lower the gantry with the lifting equipment. The operator adjusts the length of the wire rope through the adjustment device 1 according to the deviation data. The operator drives the threaded sleeve 110 to rotate by turning the hand wheel 119. Due to the action of the limit ring 111 and the limit block 112, the threaded sleeve 110 keeps rotating in place, thereby driving the threaded rod 113 to move along its own length direction. The movement of the threaded rod 113 drives the movable plate 114 connected thereto to move between the two sets of fixed plates 16, and the movable plate 114 drives the two sets of sliding plates 115 to move synchronously. The sliding plate 115 drives the first pulley 117 to move through the mounting rod 116. At this time, the wire rope is bent under the action of the first pulley 117 and the second pulley 19, thereby adjusting the length of the wire rope.

[0049] Step 7. After adjusting the length of the wire rope, start the lifting equipment again, hook the wire rope, and slowly lift the gantry. During the lifting process, continue to observe the inclination angle of the gantry to ensure that the gantry is in place smoothly at a suitable inclination angle. After it is in place, check the final position and angle, and complete the lifting operation after confirmation.

[0050] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting, characterized in that: include: Step 1: Calculate the position of the wire rope's hanging point and the length of the wire rope used by laying out; Step 2: Weld the lifting lugs to the door frame; Step 3: installing an adjustment device (1) on the steel wire rope; Step 4: Connect the two ends of the wire rope to the lifting ears through steel lifting rings; Step 5: Hook the lifting hook of the lifting equipment onto the wire rope and lift the gantry, while observing the inclination angle of the gantry; Step 6: The lifting equipment lowers the gantry and adjusts the length of the wire rope through the adjustment device (1) according to the deviation of the tilt angle; Step seven: lift the gantry using lifting equipment.

2. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting according to claim 1, characterized in that: The above-mentioned adjustment device (1) comprises two groups of side plates (11), two groups of fixing rods (12) are fixedly connected between the two groups of side plates (11), a connecting plate (13) is fixedly connected to the side of the two groups of side plates (11) close to the lifting ring, a positioning rod (14) is installed on the side of the connecting plate (13) away from the side plate (11), and a fixing ring (15) is fixedly connected to the end of the positioning rod (14) away from the connecting plate (13), and a locking rod of the steel lifting ring is inserted into the fixing ring (15).

3. A simple and easy method for fine-tuning the inclination angle of a portal frame member hoisting according to claim 2, characterized in that: The sides of the two groups of side panels (11) are fixedly connected with fixing plates (16), and both sides of the fixing plates (16) are connected with obliquely arranged reinforcing plates (17) between the side panels (11), and the ends of the two groups of fixing plates (16) away from the side panels (11) are fixedly connected with an action plate (18).

4. A simple and easy method for fine-tuning the inclination angle of a portal frame member hoisting according to claim 3, characterized in that: A threaded sleeve (110) is provided on the side of the action plate (18) away from the side plate (11); a limit ring (111) is installed on the outer ring of the threaded sleeve (110) close to one end of the action plate (18); the outer side of the limit ring (111) is rotatably connected to a limit block (112); and the limit block (112) is fixedly connected to the side of the action plate (18).

5. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting according to claim 4, characterized in that: A threaded rod (113) is threadedly connected in the threaded sleeve (110), one end of the threaded rod (113) is fixedly connected to a movable plate (114), the movable plate (114) is arranged on a side of the action plate (18) close to the side plate (11), two groups of sliding plates (115) are fixedly connected on a side of the movable plate (114) away from the action plate (18), a mounting rod (116) is fixedly connected between the two groups of sliding plates (115), and a first pulley (117) is rotatably connected to the mounting rod (116) via a bearing.

6. A simple and easy method for fine-tuning the inclination angle of a portal frame member hoisting according to claim 5, characterized in that: The two groups of fixed rods (12) are rotatably connected to a second pulley (19) via a bearing.

7. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting according to claim 6, characterized in that: Two groups of symmetrically arranged clamping blocks (118) are installed on opposite sides of the two groups of side plates (11), and the two groups of sliding plates (115) are respectively slidably connected between the two groups of clamping blocks (118).

8. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting according to claim 7, characterized in that: The outer ring fixing sleeve of the threaded sleeve (110) is provided with a hand wheel (119).

9. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting according to claim 8, characterized in that: First positioning rings (120) are provided on both sides of the first pulley (117), and two groups of the first positioning rings (120) are sleeved and installed on the installation rod (116).

10. A simple and easy method for fine-tuning the inclination angle of a portal frame component hoisting according to claim 9, characterized in that: Second positioning rings are provided on both sides of the second pulley (19), and two groups of the second positioning rings are sleeved and installed on the fixing rod (12).

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