Limiting tool for suspension arm

Abstract

The utility model provides a limiting tool for a suspension arm, which is applied to the assembly of the suspension arm and comprises two limiting components, the two limiting components are oppositely arranged and are positioned on the same axis, each limiting component comprises a connecting plate, a placing piece and more than two retainers, the retainers arranged side by side are detachably arranged at one end of the connecting plate, and the placing piece is arranged on the other end of the connecting plate. The stoppers are fixed at one end of the connecting plate, the shelving part is fixed at the other end of the connecting plate, a gap is formed between the stoppers, the shelving part located on the center line between the stoppers is parallel to the stoppers, the stoppers are higher than the shelving part, and shelving grooves are formed in the shelving part; in the welding process, it is ensured that the distance between workpieces to be assembled of the suspension arm is not changed, meanwhile, the perpendicularity between faces is ensured, and the assembly precision of the suspension arm is met.

Description

Technical Field

[0001] The utility model relates to the technical field of boom assembly, in particular to a position limiting tool for a boom. Background Art

[0002] During the offshore lifting operation, the cargo on the boom is lifted and moved by controlling the rotation of the slewing platform and the amplitude change of the boom. The boom is installed before the slewing platform, and the boom needs to be assembled. The existing boom structure, such as the patent document with Chinese patent application number 202080082701.8 and publication date 2022.07.12, discloses a crane with a movable boom. It can be seen from the figure that the middle part of the boom includes two side surfaces and a top surface and a bottom surface to form a frame structure. During the assembly process, it is generally assembled manually, which requires manual labor. First, a line must be drawn on the frame, and then the connecting column is placed on the line to ensure the distance between the two connecting columns. Then, the connecting branch pipe is welded between the connecting columns to complete the assembly of one side of the boom. However, in the process of welding the connecting branch pipe between the connecting columns, due to accidental collision by the welding workers, the connecting column may easily deviate from the marked line and change the distance between the two connecting columns. In addition, after one side is welded and assembled, it needs to be stood up for assembly with other sides. During the welding process, it is difficult to ensure the verticality between the surfaces, which affects the assembly accuracy of the assembled boom and makes the boom unusable. Utility Model Content

[0003] The purpose of the utility model is to provide a limiting fixture for a boom, which ensures that the distance between the workpieces to be assembled of the boom remains unchanged during the welding process, and at the same time ensures the verticality between the surfaces to meet the assembly accuracy of the boom.

[0004] To achieve the above-mentioned purpose, a limiting tool for a boom is used for boom assembly, including two limiting components, which are arranged opposite to each other and located on the same axis. The limiting component includes a connecting plate, a shelf and two or more stoppers. The stoppers arranged side by side are detachably mounted on one end of the connecting plate, and the shelf is fixed to the other end of the connecting plate. A spacing is provided between the stoppers, and the shelf located on the center line between the stoppers is arranged parallel to the stoppers. The height of the stoppers is greater than the height of the shelf, and a shelf groove is provided on the shelf.

[0005] The above arrangement, by oppositely arranging two limiting assemblies, and then oppositely arranging the resting pieces in the two limiting assemblies, can make the workpieces to be assembled have opposite action trends on the same axis when the workpieces to be assembled are placed on the resting pieces, thereby better avoiding movement of the workpieces to be assembled on the axis and affecting assembly welding; by arranging the resting pieces on the center line between the stop pieces, and arranging the stop pieces in parallel on the connecting plate for detachable installation, the distance between the stop pieces can be adjusted according to the size of the workpieces to be assembled of the boom, so that after the workpieces to be assembled of the boom are placed on the resting pieces, the stop pieces arranged in parallel limit movement of the workpieces to be assembled of the boom in the direction perpendicular to the center line, thereby ensuring that the distance between the workpieces to be assembled of the boom is unchanged during welding, and after the assembly surface of the boom is formed after welding assembly, the assembly surface is placed on the limiting assembly, so that the perpendicularity between the assembly surfaces can be ensured, stable welding assembly is achieved, and the assembly precision of the boom is met.

[0006] Further, the connecting plate is provided with two or more through holes matched with the locking pieces in the direction perpendicular to the center line, and the locking pieces pass through the through holes to fix the stop pieces at one end of the connecting plate.

[0007] The above arrangement facilitates adjustment of the distance between the stop pieces on the connecting plate.

[0008] Further, the stop piece is fixedly provided with a connecting piece on the side away from the center line, and the connecting piece is provided with a through hole matched with the locking piece.

[0009] The above arrangement facilitates fixation of the stop piece on the connecting plate by the locking piece passing through the through hole.

[0010] Further, the height of the stop piece is greater than or equal to the distance between the workpieces to be assembled of the boom.

[0011] The above arrangement facilitates placement of the assembly surface formed after welding assembly between the stop pieces, and stable welding between the assembly surfaces is achieved.

[0012] Further, the resting piece includes a first fixed plate, a second fixed plate, and a third fixed plate, the two ends of the third fixed plate are fixedly connected with the first fixed plate and the second fixed plate to form an accommodating frame, and the top of the third fixed plate is recessed downward to form a resting groove matched with the workpieces to be assembled of the boom.

[0013] The above arrangement can reduce the weight of the resting piece, and in addition, facilitates stable placement of the workpieces to be assembled of the boom on the resting piece for welding.

[0014] Further, the bottom of the first fixed plate, the second fixed plate, and the third fixed plate is fixedly connected with the connecting plate, and the first fixed plate and the second fixed plate are symmetrically arranged on the two sides of the center line.

[0015] The above arrangement facilitates the fixed connection of the shelf to the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the main view of the utility model.

[0017] Figure 2 This is a top view of the installation process of the boom of the utility model.

[0018] Figure 3 It is a side view of the shelf in the present invention.

[0019] Figure 4 It is a side view of the present utility model.

[0020] Figure 5 It is a structural schematic diagram of the shelf member in the present utility model.

[0021] Figure 6 It is a schematic diagram of the connecting plate in the present utility model. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0023] like Figures 1 to 6 As shown, a limit fixture for a boom is used for boom assembly, which includes two limit assemblies 1. The two limit assemblies 1 are arranged opposite to each other and located on the same axis 2. The limit assembly 1 includes a connecting plate 3, a shelf 4 and two or more stoppers 5. In this embodiment, each limit assembly 1 includes a connecting plate 3, a shelf 4 and two stoppers 5. A shelf 4 and two stoppers 5 are arranged in a triangle. The stoppers 5 arranged side by side are detachably mounted on one end of the connecting plate 3. There is a spacing between the stoppers 5. The shelf 4 on the center line 6 between the stoppers 5 is arranged parallel to the stopper 5. The shelf 4 is fixed to the other end of the connecting plate 3. The connecting plate 3 is provided with two or more through holes 7 matching with a locking member (not shown in the figure) along a direction perpendicular to the center line 6, as shown in FIG. Figure 4 As shown, a connecting piece 8 is fixedly provided on the side of the stopper 5 away from the center line 6, and a through hole matching the locking piece is also provided on the connecting piece 8. The locking piece passes through the through hole to fix the stopper 5 on the connecting plate 3, so that the stopper 5 can be disassembled to adjust the spacing between the stoppers 5, thereby adapting to different workpieces 10 to be assembled on the boom, so that after the workpieces to be assembled on the boom are placed on the shelf 4, the workpieces to be assembled on the boom are restricted from moving in a direction perpendicular to the center line 6 by the side-by-side stoppers 5, as shown in FIG. Figure 2As shown, in the welding process, one assembly surface 9 uses four limiting assemblies 1, and the distance between the to-be-assembled workpieces 10 of the boom is fixed between two limiting assemblies 1 arranged side by side, so as to ensure that the distance between the to-be-assembled workpieces 10 of the boom is constant. In this embodiment, the locking member is a screw, the stopper 5 is a steel cylinder provided with a groove, the locking member is a bolt and a nut, and the two ends of the connecting plate 3 are provided with through holes 7. Before welding, the connecting plate 3 is fixed on the jig 11 through the locking member.

[0024] As shown in Figure 1 , 2 , the height of the stopper 5 is greater than the height of the resting piece 4. In this embodiment, the height of the stopper 5 is greater than or equal to the distance between the to-be-assembled workpieces 10 of the boom, so that the assembly surface formed by welding and assembling is placed between the stoppers 5, and stable welding between the assembly surfaces is achieved.

[0025] As shown in Figure 3 and 5 , the resting piece 4 includes a first fixed plate 41, a second fixed plate 42, and a third fixed plate 43. The two ends of the third fixed plate 43 are fixedly connected with the first fixed plate 41 and the second fixed plate 42 respectively to form an accommodating frame. The first fixed plate 41 and the second fixed plate 42 are symmetrically arranged on both sides of the center line 6. The top of the third fixed plate 43 is concave downward to form a resting groove 44 matched with the to-be-assembled workpieces 10 of the boom. In this embodiment, the resting groove 44 is arc-shaped. The bottoms of the first fixed plate 41, the second fixed plate 42, and the third fixed plate 43 are fixedly connected with the connecting plate 3, so as to facilitate the fixation of the resting piece 4 on the connecting plate 3, and the to-be-assembled workpieces 10 of the boom are stably placed on the resting piece 4 for welding.

Claims

1. A boom limit fixture, used for boom assembly, characterized by: It includes two limit assemblies, which are arranged opposite to each other and located on the same axis. The limit assemblies include a connecting plate, a shelf and two or more stoppers. The stoppers arranged side by side are detachably mounted on one end of the connecting plate, and the shelf is fixed to the other end of the connecting plate. There is a spacing between the stoppers. The shelf located on the center line between the stoppers is arranged parallel to the stoppers. The height of the stoppers is greater than the height of the shelfpers, and the shelfpers are provided with shelf grooves.

2. The boom limit fixture according to claim 1, characterized in that: The connecting plate is provided with two or more through holes matching with the locking piece along a direction perpendicular to the center line, and the locking piece passes through the through holes to fix the stopper to one end of the connecting plate.

3. The boom limit fixture according to claim 2, characterized in that: A connecting piece is fixedly provided on one side of the stopper away from the center line, and a through hole matching the locking piece is provided on the connecting piece.

4. The boom limiting fixture according to claim 3, characterized in that: The height of the stopper is greater than or equal to the distance between the workpieces to be assembled on the boom.

5. The boom limit fixture according to claim 1, characterized in that: The shelf components include fixed plate one, fixed plate two and fixed plate three. The two ends of fixed plate three are respectively fixedly connected to fixed plate one and fixed plate two to form a receiving frame. The top of fixed plate three is recessed downward to form a shelf groove that matches the workpiece to be assembled on the boom.

6. The boom limiting fixture according to claim 5, characterized in that: The bottoms of the fixing plate 1, the fixing plate 2 and the fixing plate 3 are all fixedly connected to the connecting plate, and the fixing plate 1 and the fixing plate 2 are symmetrically arranged on both sides of the center line.

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