Method for manufacturing telescopic boom

Abstract

And the movable arm frame is sleeved in the fixed arm frame, so that the supporting roller is matched with the guide rail. The invention provides a telescopic boom manufacturing method which comprises the following steps: independently manufacturing a plate girder of a movable boom, and determining a center line and a guide rail position line of the movable boom after the plate girder is assembled; the guide rail is blanked, allowance is reserved for the height and thickness of the guide rail, allowance for the width of the guide rail is machined in advance, and then the guide rail is installed according to the center line and the guide rail position line; side pieces of the fixed arm support are independently manufactured and assembled into a whole, and the center line and the horizontal line of the fixed arm support are determined; mounting a supporting roller according to the center line and the horizontal line of the fixed arm support; and the movable arm frame is sleeved in the fixed arm frame, so that the supporting roller is matched with the guide rail. The method can effectively improve the manufacturing and mounting quality of the guide rail and the supporting wheel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of construction, in particular to the field of manufacturing method of mobile ship loader telescopic boom. BACKGROUND

[0002] The ship loader telescopic boom includes a fixed boom and a movable boom, and the telescopic function is mainly realized by reciprocating movement of guide rails on supporting wheels. The guide rails are arranged on the top surface and the bottom surface of the movable boom, and the supporting wheels are arranged on the inner side structure of the fixed boom.

[0003] The manufacturing and installation quality of the guide rails and the supporting wheels affect the overall operation of the telescopic boom, and further affect the quality of the ship loader. For example, the error of the opening size of the track installed on the movable boom, the straightness of the track, the height difference between the left and right tracks, the horizontal deviation and the straightness deviation of the supporting wheel installation, all of which will cause the track to be stuck, dead, and not run smoothly, which will affect the operation of the telescopic boom and further affect the quality of the ship loader.

[0004] For example, Chinese patent CN105865401 discloses a deformation amount detection method and device for a telescopic boom, which determines the deformation amount of the telescopic boom according to the extension length of each boom section and the angle between each boom section and the horizontal plane, thereby improving the accuracy of the deformation amount detection result, improving the accuracy of the boom load calculation, and improving the boom load performance. For another example, Chinese patent CN103693558 discloses a telescopic boom extension length detection device and detection method, which monitors the working state of the length detection module through the travel monitoring module, thereby ensuring the accuracy of the length information detected by the length detection module, and improving the accuracy of the telescopic arm extension length detection in the telescopic boom. However, these methods improve the accuracy through testing means.

[0005] Therefore, it is necessary to provide a telescopic boom manufacturing method which directly prevents the above problems from occurring in the manufacturing process of the telescopic boom. SUMMARY

[0006] An object of the present application is to provide a telescopic boom manufacturing method which can effectively improve the manufacturing and installation quality of the guide rails and the supporting wheels.

[0007] To achieve the above object, the telescopic boom manufacturing method comprises the following steps: separately manufacturing a plate beam of a movable boom, determining the center line and the guide rail position line of the movable boom after assembling the plate beam; blanking the guide rail, reserving a margin for the height and thickness of the guide rail, pre-processing the margin for the width of the guide rail, and then installing the guide rail according to the center line and the guide rail position line; separately manufacturing a side piece of a fixed boom, assembling the side piece into a whole, and determining the center line and the horizontal line of the fixed boom; installing the supporting roller according to the center line and the horizontal line of the fixed boom; and sleeving the movable boom into the fixed boom, so that the supporting roller cooperates with the guide rail.

[0008] In one or more embodiments, the guide rail is cut in sections and then cut together.

[0009] In one or more embodiments, a temporary process support is installed to position the movable arm when fixing the movable arm.

[0010] In one or more embodiments, when positioning the guide rail, a clamping plate and a wedge are used to adjust the gap between the guide rail and the movable arm panel.

[0011] In one or more embodiments, the guide rail is welded to the movable arm using a symmetrical intermittent welding method.

[0012] In one or more embodiments, the dimensions of the support rollers are measured using a laser theodolite.

[0013] In one or more embodiments, a traction device is used to insert the movable arm into the fixed arm.

[0014] In one or more embodiments, the centerline of the fixed arm is used to determine the position line of the guide support roller.

[0015] This method effectively improves the manufacturing and installation quality of the guide rails and support wheels through precise manufacturing methods, handling of track cutting and setting multiple baselines as processing references. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0017] Figure 1 It is an overall schematic diagram of the telescopic boom;

[0018] Figure 2 yes Figure 1 Cross-section view in the AA direction;

[0019] Figure 3 is a schematic diagram of a fixed arm;

[0020] Figure 4 It is a schematic diagram of the movable arm;

[0021] Figure 5 yes Figure 4 Enlarged view of the Y position in the middle;

[0022] Figure 6 It is a schematic diagram of the plate beam;

[0023] Figure 7 This is a schematic diagram of the coordination between the plate beam and the temporary process support;

[0024] Figure 8 It is a schematic diagram of a fixed truss;

[0025] Figure 9 is a schematic diagram of the support roller;

[0026] Figure 10 This is a schematic diagram of the movable arm frame being inserted into the fixed arm frame;

[0027] Figure 11 It is a flow chart of a telescopic boom manufacturing method.

[0028] Symbol Marking Description

[0029] 10 Telescopic boom

[0030] 11 Fixed arm

[0031] 12 movable arm

[0032] 13 rails

[0033] 14 Support roller

[0034] 18 Traction device

[0035] 31 pallet

[0036] 32 wedges

[0037] 111 side panels

[0038] 121 Plate beam

[0039] 122 tire frame tooling

[0040] 123 process card code

[0041] 125 Main Body

[0042] 126 Upper wing plate

[0043] 127 Lower wing panel

[0044] 129 Temporary process support DETAILED DESCRIPTION

[0045] The present invention is further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0046] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention.

[0047] The telescopic arm 10 of the ship loader includes a fixed arm 11 and a movable arm 12. Figure 1 As shown, the movable arm frame 12 is inside the fixed arm frame 11. The movable arm frame 12 is driven by a rack to realize the telescopic function.

[0048] The ship loader's movable boom 12 typically utilizes a plate girder truss structure, with telescopic guide rails 13 positioned on both the top and bottom surfaces of the plate girder. In some embodiments, the movable boom is 25.8 meters long and has a U-shaped plate girder cross-section. The telescopic guide rails 13 are welded to the I-beam plate girder of the rail support beam, using fillet welds with a 5mm groove and 8mm leg height.

[0049] The fixed arm 11 is mostly a space truss structure, such as Figure 3 As shown, the telescopic guide rollers 14 are generally mounted on the inner structure of the fixed boom 11. H is the height difference between the pair of telescopic guide rollers 14 in the longitudinal direction, and L is the distance between the pair of telescopic guide rollers 14 in the transverse direction. In some embodiments, the fixed boom is 35.2 meters long and has a square truss cross-section.

[0050] In order to ensure that the movable arm can move back and forth on the fixed arm, the manufacturing quality of the telescopic arm is particularly important, and dimensional errors, uneven straightness, etc. need to be avoided.

[0051] Based on this, the present invention provides a method for manufacturing a telescopic boom, so as to improve the manufacturing and installation quality of the guide rails and support wheels during the manufacturing stage.

[0052] When making the plate beam truss structure of the movable arm 12, the plate beams 121 on both sides are made separately first. Figure 6 As shown, the main body 125, upper wing plate 126, and lower wing plate 127 are placed on the tire frame tool 122. The deformation of the bottom plate and the panel is effectively reduced by adding the process card code 123. At the same time, the welding deformation is reduced by adjusting the appropriate welding parameters.

[0053] Assemble the qualified side plate beams 121 together, install temporary process supports 129 for positioning and preventing dumping, such as Figure 7 As shown, welding can be carried out after adjusting into place.

[0054] After the welding is qualified, adjust the overall level of the component and mark the center line S of the movable arm 12, such as Figure 4 As shown, the position line A and the inspection line E of the telescopic guide rail 13 are drawn with the center line S as the reference, as shown in FIG. Figure 3 shown.

[0055] The guide rail 13 on the movable arm 12 is too long to be cut as a whole. Considering the processing requirements of the guide rail side and the processing capacity of the equipment, the guide rail is cut in sections and combined to improve the utilization rate of the steel plate.

[0056] When cutting, allowances are reserved for the guide rail height and thickness, and the guide rail width allowance is pre-processed to ensure that the straightness deviation of the segmented guide rail is qualified. Then, according to the installation position line A of the guide rail, the telescopic guide rail 13 is installed on the top and bottom surfaces of the plate beam 121 of the movable arm 12.

[0057] After the guide rails in the movable arm are cut, the width allowance is processed separately, and the whole is marked and installed on the movable arm 12. Then the rail thickness allowance is processed as a whole to ensure the height and width dimensions of the rails on the movable arm. This method determines the straightness of the rails, the opening error, and the height of the left and right rails.

[0058] Re-measure the movable arm 12, adjust the overall level, use the center line S as a reference, mark the height allowance of the top and bottom guide rails, and use the machine tool to process the thickness allowance of the guide rails to ensure the horizontality of the guide rails.

[0059] When positioning the guide rail 13, use the clamping plate 31 and the wedge block 32 to adjust the gap between the guide rail and the movable arm panel or the bottom plate to ensure the levelness of the entire guide rail, and then weld the weld of the guide rail. The weld needs to be symmetrical and intermittent to reduce welding stress, such as Figure 4 、 Figure 5 shown.

[0060] Then the fixed arm 11 is processed.

[0061] The fixed boom is a truss structure, and the truss structure is manufactured with reference to the manufacturing method of the movable boom.

[0062] First, make the side panels 111 and then assemble them into a whole. Figure 8 Adjust the overall level of the components, mark the center line B of the fixed arm, the horizontal line C of the upper truss, and the horizontal line D of the lower truss, and use these as a reference to mark the position line G and the inspection line of the guide support roller 14 as the installation reference of the roller.

[0063] Prepare to install the supporting roller 14 according to the position line G of the supporting roller, mark them one by one, and weld the supporting wheel base.

[0064] Re-measure the overall level of the fixed arm, mark the position of the support wheel support hole again, remove the support wheel support, process the inner hole and end face of the support, and process according to the marked size to effectively ensure the accuracy of the support wheel installation position.

[0065] After the fixed arm 11 is painted and qualified, arrange the appropriate tire frame, adjust the entire fixed arm 11 to make it level, and then install the supporting roller 14 according to the mark, as shown in the figure. Figure 9 shown.

[0066] Use a laser theodolite to re-measure the size of each group of supporting rollers 14. Use the adjustment pads on the support to make the supporting wheels at the same height, and adjust the center position of each group of wheels through the waist-shaped holes of the support wheel support to ensure that the opening size of the support wheel meets the requirements, such as Figure 9 .

[0067] After the support roller 14 is adjusted to be qualified, the movable arm frame 12 is hoisted into 11, and the movable arm frame 12 is pulled and slid into the gear position by using the traction device 18, traction lug 19, and lifting equipment 17. The gear is installed in place to prevent sliding. Figure 10 shown.

[0068] The following is an introduction to the main processes in the manufacturing process of the telescopic boom.

[0069] In order to ensure that the movable arm can move back and forth smoothly multiple times on the fixed arm, the telescopic arm mainly includes the following processes.

[0070] The plate beams on both sides of the movable arm plate beam truss structure are first manufactured separately. By adding process card codes, the deformation of the bottom plate and the panel is effectively reduced. At the same time, by adjusting appropriate welding parameters, welding deformation is reduced.

[0071] Then, assemble the qualified side panel beams together, install temporary process supports to position and prevent tipping, and weld them after adjusting them into place.

[0072] After qualified welding, adjust the overall level of the component, mark the center line S of the movable arm, and use this as a reference to mark the position line A and inspection line E of the guide rail.

[0073] The movable arm guide rail 13 is too long to be cut as a whole. Considering the requirements for the side machining of the guide rail and the processing capacity of the equipment, the guide rail is cut in sections and then cut together to improve the utilization rate of the steel plate. When cutting the guide rail, allowances are reserved for the height and thickness of the guide rail. The guide rail width allowance is pre-processed to ensure that the straightness deviation of the sectioned guide rail is qualified. The guide rail is then installed on the top and bottom surfaces of the movable arm plate beam according to the guide rail installation position line.

[0074] When positioning the guide rail, the gap between the guide rail and the movable arm panel or base plate is adjusted using a clamping plate 31 and a wedge 32, which includes a wedge-shaped surface. This adjustment ensures the levelness of the entire guide rail. The rail's weld seam is then welded, with symmetrical, intermittent welds to reduce welding stress.

[0075] Place the movable arm as a whole on the tire frame, adjust the overall level, mark the height allowance of the top and bottom guide rails according to the center reference line, and then use the machine tool to process the entire guide rail as a whole.

[0076] The fixed boom is a truss structure, and the truss structure is manufactured with reference to the manufacturing method of the movable boom.

[0077] First, make the side panels, then assemble them into a whole. Adjust the overall level of the components, mark the centerline B of the fixed boom, and the horizontal lines C and D of the upper and lower trusses. Use these as a reference to mark the position line G and inspection line of the guide support wheels. Install each support wheel 14 according to the support wheel position line G, mark them one by one, and weld the support wheel base.

[0078] Re-measure the overall level of the fixed arm, mark the position of the support wheel support hole again, and remove the support wheel support to process the support inner hole and end face.

[0079] After the fixed arm is painted and qualified, arrange the appropriate tire frame, adjust the overall level of the fixed arm, and then install the support wheels according to the markings.

[0080] Use a laser theodolite to remeasure the size of each set of support wheels, use the adjustment gaskets on the support to make the support wheels at the same height, and adjust the center position of each set of wheels through the waist-shaped holes of the support wheel support to ensure that the opening size of the support wheels meets the requirements.

[0081] After the support wheel is adjusted and qualified, the movable arm is hoisted and inserted into the fixed arm, and the movable arm is pulled and slid into the gear position by the traction device 18. The gear is installed in place to prevent sliding.

[0082] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0083] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0084] Although the present invention is disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent variations, and modifications made to the above embodiments in accordance with the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A method for manufacturing a telescopic boom, wherein the telescopic boom comprises a fixed boom and a movable boom, and is characterized in that: The method comprises the following steps: Make the plate beams of the movable arm separately, and assemble the plate beams to determine the center line and guide rail position line of the movable arm; Cutting the guide rails, leaving allowances for the height and thickness of the guide rails, pre-processing the allowances for the width of the guide rails, and then installing the guide rails according to the center line and the guide rail position line; Make the side pieces of the fixed arm separately, assemble them into a whole, and determine the center line and horizontal line of the fixed arm; Install the supporting roller according to the center line and horizontal line of the fixed arm; The movable arm is inserted into the fixed arm so that the supporting roller is matched with the guide rail.

2. The method for manufacturing a telescopic boom according to claim 1, wherein: Cut the guide rails in sections and combine the cutting.

3. The method for manufacturing a telescopic boom according to claim 1, wherein: When fixing the movable arm frame, a temporary process support is installed to position the movable arm frame.

4. The method for manufacturing a telescopic boom according to claim 1, wherein: When positioning the guide rail, use the clamps and wedges to adjust the gap between the guide rail and the movable arm panel.

5. The method for manufacturing a telescopic boom according to claim 1, wherein: The guide rail is welded to the movable arm using a symmetrical intermittent welding method.

6. The method for manufacturing a telescopic boom according to claim 1, wherein: The size of the support roller is measured using a laser theodolite.

7. The method for manufacturing a telescopic boom according to claim 1, wherein: The movable arm is inserted into the fixed arm by using a traction device.

8. The method for manufacturing a telescopic boom according to claim 1, wherein: Use the center line of the fixed arm to determine the position line of the guide support roller.

Images