Double-welding-gun pitch changing mechanism for photo-thermal power generation main beam welding

Abstract

The utility model discloses a double-welding-gun variable-pitch mechanism for photo-thermal power generation girder welding, which comprises a movable support, the movable support comprises a support bottom plate for mounting and fixing, stair-shaped suspension plates are symmetrically arranged on the support bottom plate, and horizontal slide rails are mounted on the inner sides of the suspension plates; a horizontal sliding block matched with the horizontal sliding rail is installed on a base plate, and the base plate is fixedly installed on a welding gun support. A rolling wheel support is arranged between the welding gun left support and the welding gun right support, a bolt roller bearing is arranged in an arc-shaped groove of the welding gun left support and an arc-shaped groove of the welding gun right support respectively, the bolt roller bearings and the rolling wheel support are fixed, and the distance between the welding gun left support and the welding gun right support is adjusted through the bolt roller bearings. The device is compact in structure and can be flexibly operated in a limited space; the maintenance time of the welding gun can be effectively shortened; the positions and the distance between the double welding guns can be flexibly adjusted according to different positions and sizes of welding seams of the main beams, and the welding requirements of the main beams of different specifications are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the concentrated solar thermal power generation component manufacturing technical field, specifically relates to a kind of double welding gun variable distance mechanism for light and heat power generation girder welding. BACKGROUND

[0002] With the increasing demand for clean energy, as a kind of clean energy generation method that combines light and heat conversion power generation, large-scale heat storage and grid synchronization machine characteristics, light and heat power generation has developed rapidly. The construction scale of light and heat power station is getting larger and larger, which requires a large number of high-quality light and heat power generation girders to support key components such as heliostat.

[0003] As a key structural component in light and heat power generation system, the improvement of its welding technology is crucial to meet the needs of industry development.

[0004] The welding of main beam steel pipe and support beam plate is double-sided symmetric segmented fillet weld, with 4mm welding leg size, nearly 6m long main beam steel pipe, and 4mm allowable error of full-length straightness, which will cause uneven gap between main beam steel pipe and support beam plate. If the welding gun does not swing during welding, the forming width of single welding seam will be relatively narrow, and there will be defects such as high in the middle and low on both sides. In order to ensure the welding quality, double welding gun and welding swing device are used to increase the width of welding bead, which has practical significance for welding seams with uneven welding width and improving the appearance of welding bead surface.

[0005] However, when the welding gun drops from the stop position to the working position, the welding wire will touch the support beam plate due to the shaking of the swing device, resulting in different lengths of welding wire extending from the welding nozzle, which is very time-consuming to adjust.

[0006] In view of the above shortcomings of the prior art, the utility model is proposed. Therefore, the utility model mechanism is to ensure that the welding wire does not touch the support beam plate when the welding gun moves up and down. CONTENT OF THE UTILITY MODEL

[0007] The utility model discloses a double welding gun variable distance mechanism for light and heat power generation girder welding to solve the problem that the welding wire touches the support beam plate due to the shaking of the swing device when the welding gun drops from the stop position to the working position, resulting in different lengths of welding wire extending from the welding nozzle.

[0008] The technical scheme of the utility model is:

[0009] A double welding gun variable distance mechanism for light and heat power generation girder welding, comprising a moving bracket 407, the moving bracket 407 comprises a bracket bottom plate 4070 for installation and fixation, the bracket bottom plate 4070 is symmetrically provided with a stair-type suspension plate 4071, and a horizontal sliding rail 415 is installed on the inner side of the suspension plate 4071;

[0010] The horizontal sliding block 414 matched with the horizontal sliding rail 415 is installed on the base plate 408 fixedly installed on the welding gun support;

[0011] The welding gun support comprises a welding gun left support 403 and a welding gun right support 411, the welding gun left support 403 and the welding gun right support 411 are symmetrically arranged and are both L-shaped, the long side is provided with an arc-shaped groove 416, and the short side is provided with a mounting groove 417 for mounting a welding oscillator 402, and the welding oscillator 402 is installed with a welding gun 401;

[0012] The welding gun left support 403 and the welding gun right support 411 are provided with a roller support 409, a bolt roller bearing 410 is installed in the arc-shaped groove 416 of the welding gun left support 403 and the welding gun right support 411 respectively, and the bolt roller bearing 410 is fixed with the roller support 409, and the distance between the welding gun left support 403 and the welding gun right support 411 is adjusted through the bolt roller bearing 410.

[0013] The preferred technical scheme provided by the utility model is:

[0014] The double-welding-gun distance-variable mechanism is installed on the portal frame 2 through the fixing plate 404, the fixing plate 404 is installed with a travelling mechanism 3, the fixing plate 404 is driven by the travelling mechanism 3 so as to drive the double-welding-gun distance-variable mechanism to move in the horizontal direction on the portal frame 2.

[0015] The further preferred technical scheme provided by the utility model is:

[0016] The fixing plate 404 is installed with a vertical sliding rail 412, the moving support 407 is installed with a vertical sliding block 413 matched with the vertical sliding rail 412, the lifting cylinder 406 drives the moving support 407 to move up and down through the vertical sliding block 413 and the vertical sliding rail 412, and the lifting cylinder 406 is installed on the fixing plate 404.

[0017] The further preferred technical scheme provided by the utility model is:

[0018] The stair-shaped suspension plate 4071 comprises two groups of L-shaped folded plates 4072 arranged in parallel, and the two groups of L-shaped folded plates 4072 are fixedly provided with a reinforcing rib plate 4073 between the long sides.

[0019] Beneficial effects:

[0020] 1. The mechanism is compact in structure and can be flexibly operated in limited space;

[0021] 2. In the large-batch welding operation of the photo-thermal power generation main beam, the mechanism can effectively reduce the welding gun maintenance time;

[0022] 3, the main beam of the institution can be adjusted according to the different position and size of the welding seam, the position and distance of the double welding gun are flexible, and the welding demand of different specifications of the main beam is adapted;

[0023] 4, the automation degree of the institution is higher, the maintenance is simple, and a large amount of manual cost is saved;

[0024] 5, the institution adopts the mode of double welding gun and welding oscillator, the working efficiency is greatly improved on the basis of the original, and the welding quality is stable.

[0025] Actual use effect:

[0026] Using the institution, a large number of main beams have been welded, the quality is stable, and the production efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall structure schematic diagram of the utility model;

[0028] Figure 2 It is the three-dimensional structure schematic diagram of the utility model;

[0029] Figure 3 It is the three-dimensional structure schematic diagram of the left support 403 of the welding gun and the right support 411 of the welding gun;

[0030] Figure 4 It is the three-dimensional structure schematic diagram of the movable support 407;

[0031] Figure 5 It is the three-dimensional structure schematic diagram of the roller support 409;

[0032] Figure 6 It is the working principle schematic diagram of the double welding gun distance changing mechanism 4 of the utility model;

[0033] The meaning of the mark in the drawing:

[0034] 1. The wire feeding mechanism, 2. The gantry, 3. The walking mechanism, 4. The double welding gun distance changing mechanism, 5. The main beam steel pipe, 6. The support beam plate, 7. The rack;

[0035] 401. The welding gun, 402. The welding oscillator, 403. The left support of the welding gun, 404. The fixed plate, 405. The pin shaft, 406. The lifting cylinder,

[0036] 407. The movable support, 4070. The support bottom plate, 4071. The ladder type suspension plate, 4072. The L-shaped folding plate, 4073. The reinforcing rib plate;

[0037] 408. backing plate, 409. roller support, 410. bolt roller bearing, 411. right welding gun support, 412. vertical slide rail, 413. vertical slide block, 414. horizontal slide block, 415. horizontal slide rail, 416. arc-shaped slot, 417. mounting slot. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0039] Figure 1 It is a schematic view of the overall structure of the utility model, Figure 2 It is a schematic view of the overall structure of the utility model, Figure 6 It is a schematic view of the working principle of the double-welding-gun distance-variable mechanism 4 of the utility model. In combination with the drawings, the double-welding-gun distance-variable mechanism for the main beam welding of the photo-thermal power generation of the utility model is installed on the portal frame 2 through the fixing plate 404. The fixing plate 404 is installed with the travelling mechanism 3. The fixing plate 404 is driven by the travelling mechanism 3, so as to drive the double-welding-gun distance-variable mechanism to move in the horizontal direction on the portal frame 2.

[0040] The fixing plate 404 is installed with the vertical slide rail 412. The moving support 407 is installed with the vertical slide block 413 matched with the vertical slide rail 412. The lifting cylinder 406 drives the moving support 407 to move up and down through the vertical slide block 413 and the vertical slide rail 412. The lifting cylinder 406 is installed on the fixing plate 404.

[0041] As shown in the drawings, Figure 4 The double-welding-gun distance-variable mechanism includes a moving support 407. The moving support 407 includes a support bottom plate 4070 for installation and fixation. The support bottom plate 4070 is symmetrically provided with a stair-type suspension plate 4071. The inside of the suspension plate 4071 is installed with the horizontal slide rail 415.

[0042] The horizontal slide block 414 matched with the horizontal slide rail 415 is installed on the backing plate 408. The backing plate 408 is fixedly installed on the welding gun support;

[0043] As shown in the drawings, Figure 3As shown in the figure, the welding torch holder comprises a welding torch left holder 403 and a welding torch right holder 411, which are symmetrically arranged and both are L-shaped, with an arc-shaped groove 416 on the long side and a mounting groove 417 for mounting a welding oscillator 402 on the short side, and the welding torch 401 is mounted on the welding oscillator 402;

[0044] A roller holder 409 is arranged between the welding torch left holder 403 and the welding torch right holder 411 (as shown in the figure), a bolt roller bearing 410 is arranged in the arc-shaped groove 416 of the welding torch left holder 403 and the welding torch right holder 411 respectively, and the bolt roller bearing 410 is fixed with the roller holder 409, and the distance between the welding torch left holder 403 and the welding torch right holder 411 is adjusted through the bolt roller bearing 410. Figure 5

[0045] The mechanism is used for segment welding of the support beam plate 6 and the main beam steel pipe 5 after the main beam spot welding is completed, and the welding is double-sided symmetric fillet welding, with 10 symmetric welds on two sides, 8 of which are 40mm long and 2 of which are 12mm long, and the weld leg size is 4mm.

[0046] Before use, the mechanism should be assembled.

[0047] First step: a set of vertical sliding rails 412 and roller holders 409 are installed at the corresponding positions on the right side of the fixed plate 404, and a lifting cylinder 406 is installed at the corresponding position of the fixed plate 404.

[0048] Second step: a set of vertical sliding blocks 413 are fixed inside the moving holder 407 with a hexagonal head screw, and a set of horizontal sliding rails 415 are installed at the corresponding positions.

[0049] Third step: two pads 408 are installed on the stepped surface of the welding torch left holder 403, and a set of horizontal sliding blocks 414 are installed on the pads 408.

[0050] The welding torch right holder 411 is installed in the same way as the welding torch left holder 403.

[0051] Fourth step: the horizontal sliding blocks 414 fixed on the left and right welding torch holders are respectively sleeved into the horizontal sliding rails 415, and the vertical sliding blocks 413 fixed on the moving holder 407 are sleeved into the vertical sliding rails 412. The lifting cylinder 406 and the moving holder 407 are connected by a pin shaft 405 and a hexagonal head screw.

[0052] Fifth step: a bolt roller bearing 410 is arranged in the arc-shaped groove of the left and right welding torch holders respectively, and the bolt roller bearing 410 is fixed with the roller holder 409.

[0053] ​Sixth step: install a welding oscillator 402 under the left support 403 and the right support 411 of the welding torch respectively, and install the welding torch 401 on the welding oscillator 402.

[0054] After assembly, adjust to ensure that the left support 403 and the right support 411 of the welding torch move synchronously.

[0055] The fixed plate 404 is also the installation base of the wire feeding mechanism 1 and the walking mechanism 3.

[0056] The double-welding-torch variable-distance mechanism 4 changes the distance between the two welding torches by using the arc-shaped slot of the left support 403 and the right support 411 and the screw roller bearing 410, so that the two welding torches are pulled apart when moving up and close to each other when sliding down. By changing the distance, the wire is prevented from touching the beam plate, and the mechanism can also be applied to welding beams of different specifications.

[0057] The moving support 407 in the double-welding-torch variable-distance mechanism 4 is the fixed base for vertical and horizontal movement, and the vertical slide rail 412 and the horizontal slide rail 415 are used to achieve movement in two directions.

[0058] In combination Figure 6 The working principle of the mechanism is as follows:

[0059] After the beam is spot-welded by the previous work station, it is sent to the machine frame 7 by the conveying device and is positioned and clamped.

[0060] The double-welding-torch variable-distance mechanism 4 is moved on the gantry 2 by the walking mechanism 3, and the wire feeding mechanism 1 is also moved on the gantry 2, and is positioned according to the position of the beam plate 6.

[0061] When the double-welding-torch variable-distance mechanism 4 reaches the specified position, the moving support 407 is lowered by the lifting cylinder 406, and the left and right welding torch supports are also lowered and the distance between the two welding torches is adjusted by the screw roller bearing 410. When it reaches the welding position, welding is performed. After welding is completed, the telescopic rod of the lifting cylinder 406 is retracted, the double-welding-torch variable-distance mechanism 4 is lifted, and the welding torch returns to the initial state.

[0062] Repeat the above actions to sequentially complete the welding of all beam plates 6, then return the double-welding-torch variable-distance mechanism 4 and the wire feeding mechanism 1 to the original position by the walking mechanism 3, release the clamping of the beam, and send the beam to the next work station by the conveying device.

[0063] By adjusting the distance, the mechanism can meet the welding of beams of different sizes.

[0064] The described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A double welding gun distance changing mechanism for photo-thermal power generation main beam welding, characterized by, Including a mobile support (407), the mobile support (407) includes a support bottom plate (4070) for fixed installation, the support bottom plate (4070) is provided with stair type hanging plate (4071) symmetrically, the inside hanging plate (4071) is installed with horizontal slide rail (415); The horizontal slide block (414) matched with the horizontal slide rail (415) is installed on the backing plate (408), and the backing plate (408) is fixedly installed on the welding gun support; The welding gun support includes a welding gun left support (403) and a welding gun right support (411), the welding gun left support (403) and the welding gun right support (411) are symmetrically arranged and are both L-shaped, the long side is provided with an arc-shaped groove (416), and the short side is provided with a mounting groove (417) for mounting a welding oscillator (402), and the welding oscillator (402) is installed with a welding gun (401); The welding gun left support (403) and the welding gun right support (411) are provided with a roller support (409), a bolt roller bearing (410) is arranged in the arc-shaped groove (416) of the welding gun left support (403) and the welding gun right support (411) respectively, and the bolt roller bearing (410) is fixed with the roller support (409), and the distance between the welding gun left support (403) and the welding gun right support (411) is adjusted through the bolt roller bearing (410).

2. The double welding gun distance changing mechanism for the main beam welding of the photo-thermal power generation according to claim 1, characterized in that, The double-welding-gun distance-variable mechanism is installed on the portal frame (2) through a fixing plate (404), the fixing plate (404) is installed with a walking mechanism (3), the fixing plate (404) is driven by the walking mechanism (3) to drive the double-welding-gun distance-variable mechanism to move horizontally on the portal frame (2).

3. The dual welding gun distance changing mechanism for the welding of the main beam of the photo-thermal power generation according to claim 2, characterized in that, The fixing plate (404) is installed with a vertical slide rail (412), the mobile support (407) is installed with a vertical slide block (413) matched with the vertical slide rail (412), and the mobile support (407) is driven by the vertical slide block (413) and the vertical slide rail (412) to move up and down by a lifting cylinder (406); wherein the lifting cylinder (406) is installed on the fixing plate (404).

4. The dual welding gun distance changing mechanism for the welding of the main beam of the photo-thermal power generation according to claim 1, characterized in that, The stair type hanging plate (4071) includes two groups of L-shaped folding plates (4072) arranged in parallel, and the two groups of L-shaped folding plates (4072) are fixedly provided with a reinforcing rib plate (4073) between the long sides.

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