A device and method for assembling π-shaped structural components

Abstract

The present invention discloses a device and method for assembling a π-shaped structural component, comprising a track, a positioner, a positioning trolley and a positioning fixture; the positioning fixture is arranged on the positioner, and the working surface of the positioning fixture is used to place a flange plate; the track is laid on the ground on one side of the positioner, the positioning trolley is arranged on the track and moves horizontally along the length direction of the track, and the working surface of the positioning trolley is used to place a main board. The present invention replaces the traditional heavy production mode and realizes mechanized production.

Description

Technical Field

[0001] The invention relates to steel structure manufacturing technology, and more particularly to an assembly device and method for π-shaped structural components. Background Art

[0002] The quay crane is the main tool for loading and unloading containers at the container terminal berth. It is driven by the trolley travel mechanism and moves slowly along the dock. The travel support is the connection between the trolley travel mechanism and the lower crossbeam of the door frame. It is one of the important components of the travel mechanism. It is a π-shaped structural component composed of a flange plate 1 and two side ear plates 2 (such as Figure 1 As shown). The same type of structure is also found in rail cranes and gantry cranes, which have the characteristics of thicker plates and a large amount of welding, and anti-deformation measures need to be adopted during the welding process. Some companies currently use labor-intensive manual assembly in the steel structure manufacturing process, using a large number of process supports and code plates to restrain welding deformation, and the welds are manually welded. This relatively primitive production model continues to this day. In today's market environment where labor costs are rising rapidly and the industry's production model has undergone a huge change, these weaknesses have fully emerged and have a tendency to gradually expand, forming a huge obstacle to the development of enterprises. Summary of the invention

[0003] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide an assembly device and method for π-shaped structural components, which replace the traditional heavy production mode and realize mechanized production.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] On the one hand, a device for assembling a π-shaped structural component includes a track, a positioner, a positioning trolley and a positioning fixture;

[0006] The positioning fixture is arranged on the positioner, and the working surface of the positioning fixture is used for placing the flange plate;

[0007] The track is laid on the ground at one side of the positioner, the positioning trolley is arranged on the track and moves horizontally along the length direction of the track, and the working surface of the positioning trolley is used for placing the mainboard.

[0008] Preferably, the positioning fixture includes a flange seat, a transverse fixture A, a transverse fixture B, a connecting rod, a slide groove, a longitudinal positioning seat and a working panel;

[0009] The working panel and the slide groove are arranged in a cross shape and are provided on the upper surface of the flange seat;

[0010] The transverse clamp A and the transverse clamp B are both arranged on the slideway and are respectively located at two end positions of the slideway;

[0011] The connecting rod is used to connect the transverse clamp A and the transverse clamp B, and the connecting rod is driven by a connecting rod driving motor;

[0012] The longitudinal positioning seat is arranged at an end position of the working panel.

[0013] Preferably, a rib plate is provided on the lower surface of the working panel, and the rib plate is provided on the upper surface of the flange seat.

[0014] Preferably, the positioner comprises a slewing bearing seat, a flange plate, a main structure and a bottom plate;

[0015] The lower end of the main structure is connected to the bottom plate, and the upper end is connected to the flange plate;

[0016] The slewing bearing seat is arranged on the flange plate;

[0017] The flange seat is connected to the slewing support seat through a bolt pair, and the slewing support seat is driven by a motor to rotate.

[0018] Preferably, the flange plate is tilted to form an angle of 45° with the bottom plate.

[0019] Preferably, the positioning trolley comprises a bracket, an adjustment support rod, wheels and a trolley frame;

[0020] One end of the bracket is hinged to the head position of the trolley frame, and the other end is hinged to the upper end of the adjustment support rod;

[0021] The lower end of the adjusting support rod is hinged to the rear position of the trolley frame;

[0022] The wheels are arranged on the lower surface of the trolley frame and move along the track.

[0023] Preferably, two pairs of tracks are laid and arranged in parallel on one side of the positioner.

[0024] On the other hand, a method for assembling a π-shaped structural component comprises the following steps:

[0025] S1. Before assembly, the assembly device for the π-shaped structural component is in an open state;

[0026] S2, hoisting the flange plate and placing it on the positioning fixture to fix the flange plate;

[0027] S3, the motor drives the rotary support seat and the positioning fixture to drive the flange plate to rotate 90° clockwise;

[0028] S4, moving the positioning trolley to one end of the track close to the positioning fixture, adjusting the working surface angle of the positioning trolley so that the working surface angle of the positioning trolley is at the mainboard assembly position;

[0029] S5, hoisting the main board and placing it on the working surface of the positioning trolley, adjusting the position and fixing it with the flange plate by spot welding;

[0030] S6, arranging submerged arc welding equipment to weld the inner weld of the main board on one side;

[0031] S7, moving the positioning trolley to an end of the track away from the positioning fixture;

[0032] S8, the motor then drives the rotary support seat and the positioning fixture to drive the walking support component to rotate 180°;

[0033] S9, repeating steps S4 to S7 to complete the inner weld of the mainboard on the other side;

[0034] S10, welding the outer weld of the mainboard with the cooperation of the positioner.

[0035] The present invention provides an assembly device and method for π-shaped structural components, which utilize pre-release anti-deformation measures to eliminate angular deformation during welding and no longer require welding of a large number of process supports and code plates. In the absence of interference from process supports, submerged arc welding replaces manual welding, which is more efficient and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural diagram of the walking support;

[0037] Figure 2 yes Figure 1 A magnified schematic diagram of position A in the middle;

[0038] Figure 3 It is a structural schematic diagram of the assembly device of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the mid-position clamp of the assembly device of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the positioning trolley in the assembly device of the present invention;

[0041] Figure 6 It is a schematic diagram of the structure of the positioner in the pairing device of the present invention. DETAILED DESCRIPTION

[0042] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0043] Combination Figure 1 and Figure 2 As shown, the main board 1 and the flange board 2 in the walking support structure are T-shaped butt joints, which are important load-bearing structural parts. Thick plate welding is mostly used, and the weld requirements are high. In the thick plate welding process, the weld filling volume is large, and there is a large residual force in the weld and its heat-affected zone, which will cause the support to deform and reduce the bearing capacity of the structure. The groove 3 is processed on the inner side of the π-shaped structure, and the main board 1 and the flange board 2 form a certain angle according to the reverse deformation amount obtained by the experiment during assembly positioning.

[0044] Combination Figure 3 As shown, the present invention provides an assembly device for π-shaped structural components, which has the functions of adjusting the anti-deformation angle and shifting the joint to a ship-shaped posture to meet the submerged arc welding conditions, and includes a track 4, a positioner 5, a positioning trolley 6 and a positioning fixture 7.

[0045] The positioning fixture 7 is arranged on the positioner 5 , and the working surface of the positioning fixture 7 is used for placing the flange plate 2 .

[0046] The track 4 is laid on the ground at the lower end of the positioner 5 . The positioning trolley 6 is arranged on the track 4 and moves horizontally along the length direction of the track 4 . The working surface of the positioning trolley 6 is used to place the main board 1 .

[0047] Combination Figure 4 As shown, the positioning fixture 7 includes a flange seat 701, a transverse fixture A702, a transverse fixture B703, a connecting rod 704, a slide groove 705, a longitudinal positioning seat 706 and a working panel 707.

[0048] The working panel 707 and the slide groove 705 are arranged in a cross shape and are provided on the upper surface of the flange seat 701 .

[0049] The transverse clamp A702 and the transverse clamp B703 are both disposed on the slide groove 705 and are respectively located at two end positions of the slide groove 705 and can move along the slide groove 705 .

[0050] The connecting rod 704 is used to connect the transverse clamp A702 and the transverse clamp B703, so as to drive the transverse clamp A702 and the transverse clamp B703 to move relative to each other. The connecting rod 704 is driven by a connecting rod driving motor.

[0051] The longitudinal positioning seat 706 is disposed at one end of the working panel 707 to bear the weight of the flange plate 2 .

[0052] The lower surface of the working panel 707 is provided with a rib plate, and the rib plate is arranged on the upper surface of the flange seat 701, so that a gap for installing the slide groove 705 and the connecting rod 704 is left between the lower surface of the working panel 707 and the upper surface of the flange seat 701.

[0053] The positioning fixture 7 is mainly used for positioning the flange plate 2. A rib plate is arranged between the flange seat 701 and the working panel 707 to form a space of a certain height for the installation of other connecting rods 704 and accessories such as driving. The main structure connects the flange seat 701 with the slewing bearing seat 501 on the positioner 5 through a bolt pair 505, which can realize ±90° rotation. When the flange plate 2 is placed on the positioning fixture 7, the weight of the flange plate 2 is first loaded by the longitudinal positioning seat 706, and then the connecting rod driving motor drives the connecting rod 704 to drive the transverse clamp A702 and the transverse clamp B703 to move toward each other along the slide 705 at the same time, so as to realize the transverse centering positioning of the flange plate 2. The connecting rod 704 also has a self-locking function and is hinged with the flange seat 701. The transverse clamp A702, the transverse clamp B703 and the longitudinal positioning seat 706 are all provided with code plates, which play a role of restraining and clamping the flange plate 2 after positioning.

[0054] Combination Figure 5 As shown, the positioning trolley 6 includes a bracket 601 , an adjustment support rod 602 , wheels 603 and a trolley frame 604 .

[0055] One end of the bracket 601 is hinged to the head position of the trolley frame 604 through a hinge shaft 605, and the other end is hinged to the upper end of the adjustment support rod 602 through a hinge shaft.

[0056] The lower end of the adjustment support rod 602 is hinged to the rear position of the trolley frame 604 through a hinge shaft.

[0057] The wheels 603 are disposed on the lower surface of the trolley frame 604 , and the wheels 603 move along the track 4 .

[0058] Two pairs of rails 4 are laid and installed in parallel on one side of the positioner 5 .

[0059] The positioning trolley 6 is mainly used for assembling the flange plate 2 and the bait plates on both sides thereof. The bracket 601 is used to carry the bait plates. One end is connected to the head and tail of the trolley frame 604 through the hinge shaft 605 and the other end is connected to the head and tail of the trolley frame 604 through the adjusting strut 602. The function of the adjusting strut 602 is to change the angle of the bracket 601 to adjust the reverse deformation of the π-shaped structure of different sizes. The four corners of the lower surface of the trolley frame 604 are provided with wheels 603 and a driving mechanism, which move horizontally through two sets of tracks 4 on one side of the positioner 5.

[0060] Combination Figure 6 As shown, the positioner 5 includes a slewing support seat 501 , a flange plate 502 , a main structure 503 and a bottom plate 504 .

[0061] The lower end of the main structure 503 is connected to the bottom plate 504 , and the upper end is connected to the flange plate 502 .

[0062] The slewing support seat 501 is disposed on the flange plate 502 .

[0063] The flange seat 701 in the positioning fixture 7 is connected to the slewing support seat 501 through a bolt pair 505, and the slewing support seat 501 is driven by a motor to drive the flange seat 701 to rotate.

[0064] The flange plate 502 is tilted to form an angle of 45° with the bottom plate 504 .

[0065] The main function of the positioner 5 is to load the positioning fixture 7 and install the motor equipment. The main structure 503 is made of multiple steel plates bent and spliced ​​into a "round sky and square earth" structure, with the upper end and the lower end forming a 45° angle. The upper end is welded with a circular flange plate 502, and the lower end is welded with a square bottom plate 504. The slewing bearing seat 501 is also connected to the circular flange plate 502 by a bolt pair, and is driven to rotate by a motor.

[0066] The track 4 is laid on one side of the positioner 5 and is composed of two pairs of parallel track bodies and track-bearing beams, and the spacing between them matches the opening size of the wheels 603 in the positioning trolley 6.

[0067] The present invention also provides a method for assembling a π-shaped structural component, comprising the following steps:

[0068] S1. Before assembly, the assembly device for the π-shaped structural assembly of the present invention is in an open state, that is, the positioning fixture 7 is opened, and the positioning trolley 6 moves left to the end position of the track 4;

[0069] S2, hoist the flange plate 2 and place it on the positioning fixture 7, adjust the position and tighten the positioning fixture 7 to fix the flange plate 2;

[0070] S3, the motor drives the slewing bearing 501 and the positioning fixture 7 to drive the flange plate 2 to rotate 90° clockwise;

[0071] S4, move the positioning trolley 6 to one end of the track 4 close to the positioning fixture 7 (move to the right), adjust the working surface angle of the positioning trolley 6, so that the working surface angle of the positioning trolley 6 is at the mainboard assembly position, and fix the positioning trolley 6 to prevent it from moving and affecting the assembly accuracy;

[0072] S5, hoist the main board 1 and place it on the working surface of the positioning trolley 6, adjust the position and fix it with the flange plate 2 by spot welding;

[0073] S6, arranging submerged arc welding equipment to weld the inner weld of the main board 1 on one side;

[0074] S7, move the positioning trolley 6 to the end of the track 4 away from the positioning fixture 7 (move left);

[0075] S8, the positioner 5 drives the positioning fixture 7 to drive the walking support component to rotate 180°;

[0076] S9, repeating steps S4 to S7 to complete the inner welding seam of the other side main board 1;

[0077] S10, with the cooperation of the positioner 5, welding the outer weld of the mainboard 1.

[0078] There are many technological measures to control welding deformation. The original production mode of the workshop adopts rigid fixation, which reduces the angular deformation of the structural parts, but increases the welding stress at the same time, and easily damages the parent material in the process of removing the process support or the stacking plate. Through many tests, the walking support group adopts anti-deformation and submerged arc multi-layer pressure welding measures to control welding deformation, replace the anti-deformation measures of the process support and the stacking plate, save materials and reduce labor intensity.

[0079] The walking support is an important load-bearing structural part. The main welds all need UT flaw detection. The original manual welding process is to clean the root of the reverse side after welding 1 / 3 of one side, and then weld it by hand in multiple layers and multiple passes. The construction period is long, the labor intensity is high, and the quality of the welded products is unstable. When anti-deformation measures are taken to replace the rigid fixation of the process support, the space inside the π-shaped structure is released. The joint seam is a straight seam, and when its posture is adjusted to the boat shape, it is very conducive to submerged arc welding. Submerged arc welding is one of the mechanized welding methods with high production efficiency, with the advantages of high production efficiency, high weld quality, and good working conditions. Through experiments, submerged arc welding has achieved root cleaning treatment and changed the form of the butt groove. During the welding process, the inner seam adopts multi-layer and multi-pass submerged arc welding, and the outer seam is only welded in one layer. This welding process replaces the heavy manual welding process, greatly improving production efficiency and the quality of welded products is stable.

[0080] To sum up, the present invention breaks through traditional manual production and innovates a π-shaped structure assembly method, which mainly changes the anti-welding deformation measures and adopts an efficient welding form. This method uses special equipment to achieve π-shaped structure assembly, breaks the traditional barriers and realizes mechanized production.

[0081] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A device for assembling π-shaped structural components, characterized in that: Including rails, positioners, positioning trolleys and positioning fixtures; The positioning fixture is arranged on the positioner, and the working surface of the positioning fixture is used for placing the flange plate; The track is laid on the ground on one side of the positioner, the positioning trolley is arranged on the track and moves horizontally along the length direction of the track, and the working surface of the positioning trolley is used to place the mainboard. The positioning fixture includes a flange seat, a transverse fixture A, a transverse fixture B, a connecting rod, a slide groove, a longitudinal positioning seat and a working panel; The working panel and the slide groove are arranged in a cross shape and are provided on the upper surface of the flange seat; The transverse clamp A and the transverse clamp B are both arranged on the slide groove and are respectively located at two end positions of the slide groove, and move along the slide groove; The connecting rod is used to connect the transverse clamp A and the transverse clamp B, and the connecting rod is driven by a connecting rod driving motor; The longitudinal positioning seat is arranged at one end of the working panel. The positioner comprises a slewing bearing seat, a flange plate, a main structure and a bottom plate; The lower end of the main structure is connected to the bottom plate, and the upper end is connected to the flange plate; The slewing bearing seat is arranged on the flange plate; The flange seat is connected to the slewing support seat by a bolt pair, and the slewing support seat is driven by a motor to rotate. The bolt pair connects the flange seat with the slewing support seat on the positioner to achieve ±90° slewing action. The flange plate is tilted to form a 45° angle with the bottom plate. The positioning trolley comprises a bracket, an adjustment support rod, wheels and a trolley frame; One end of the bracket is hinged to the head position of the trolley frame, and the other end is hinged to the upper end of the adjustment support rod; The lower end of the adjusting support rod is hinged to the rear position of the trolley frame; The wheels are arranged on the lower surface of the trolley frame and move along the track. The assembly device for the π-shaped structural component is used to perform the following assembly method, comprising the steps of: S1. Before assembly, the assembly device for the π-shaped structural component is in an open state; S2, hoisting the flange plate and placing it on the positioning fixture to fix the flange plate; S3, the motor drives the slewing bearing seat and the positioning fixture to drive the flange plate to rotate 90° clockwise; S4, moving the positioning trolley to one end of the track close to the positioning fixture, adjusting the working surface angle of the positioning trolley so that the working surface angle of the positioning trolley is at the mainboard assembly position; S5, hoisting the main board and placing it on the working surface of the positioning trolley, adjusting the position and fixing it with the flange plate by spot welding; S6, arranging submerged arc welding equipment to weld the inner weld of the main board on one side; S7, moving the positioning trolley to an end of the track away from the positioning fixture; S8, the motor drives the slewing support seat and the positioning fixture to drive the walking support member to rotate 180° counterclockwise; S9, repeating steps S4 to S7 to complete the inner weld of the mainboard on the other side; S10, welding the outer weld of the mainboard with the cooperation of the positioner.

2. The assembling device for π-shaped structural components according to claim 1, characterized in that: The lower surface of the working panel is provided with a rib plate, and the rib plate is arranged on the upper surface of the flange seat.

3. The assembly device for π-shaped structural components according to claim 1, characterized in that: The track is laid in two pairs and arranged in parallel on one side of the positioner.

4. A method for assembling a π-shaped structural component, characterized in that: The following steps are involved: S1. Before assembly, the assembly device for the π-shaped structural assembly as claimed in any one of claims 1 to 3 is in an open state; S2, hoisting the flange plate and placing it on the positioning fixture to fix the flange plate; S3, the motor drives the slewing bearing seat and the positioning fixture to drive the flange plate to rotate 90° clockwise; S4, moving the positioning trolley to one end of the track close to the positioning fixture, adjusting the working surface angle of the positioning trolley so that the working surface angle of the positioning trolley is at the mainboard assembly position; S5, hoisting the main board and placing it on the working surface of the positioning trolley, adjusting the position and fixing it with the flange plate by spot welding; S6, arranging submerged arc welding equipment to weld the inner weld of the main board on one side; S7, moving the positioning trolley to an end of the track away from the positioning fixture; S8, the motor drives the slewing support seat and the positioning fixture to drive the walking support member to rotate 180° counterclockwise; S9, repeating steps S4 to S7 to complete the inner weld of the mainboard on the other side; S10, welding the outer weld of the mainboard with the cooperation of the positioner.

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