CN217727449U - Submerged-arc welding agent spreading device for welding inner sides of U-shaped ribs - Google Patents

Abstract

The utility model discloses a submerged arc welding agent spreading device for welding the inner side of a U-shaped rib, which comprises a storage bin for containing welding flux and a mobile platform, and also comprises a flow guide bin, a switch mechanism, a transmission mechanism and a power element, wherein the storage bin is fixedly arranged above the mobile platform, a feed opening for the welding flux to flow out is arranged at the position of the storage bin close to the welding seam of the U-shaped rib, the flow guide bin is arranged below the feed opening, and the flow guide bin is arranged on the mobile platform in a left-right sliding manner; the opening and closing mechanism comprises a material baffle plate for plugging or opening the feed opening, and the material baffle plate is arranged at the bottom of the storage bin in a left-right sliding manner; a power element for driving the diversion cabin to move left and right is fixedly arranged on the moving platform; the diversion bin is in driving connection with the switch mechanism through the transmission mechanism. The utility model has the advantages of reasonable design, have good adaptability to the width deviation of opening a mouthful of U-shaped rib, make the position of solder flux spread all the time near welding part, and the solder flux spread piles up the height and can keep basic unanimity.

Description

Submerged-arc welding agent spreading device for welding inner sides of U-shaped ribs

Technical Field

The utility model relates to a bridge steel structure welding technology field specifically is a welding of U-shaped rib is with submerged arc welding agent scattering device.

Background

In the steel structure welding field such as bridge, building, there will be the inboard welding in narrow and small space usually, for example: when the fillet weld at the inner side of the U-shaped rib of the orthogonal special-shaped bridge deck is subjected to submerged arc welding, welding flux needs to be spread at the welding position in the narrow space of the U-shaped rib. In order to achieve flux spreading at the inside corners of the U-shaped ribs, there are also devices in the prior art which allow access to the inside of the U-shaped ribs for flux application, such as: the Chinese utility model patent (No. CN 210848731U, no. 2020.06.26) proposes a driving mechanism of a welding flux laying device and the laying device, when the device runs, two cylinders at two sides of a storage bin are connected with a control switch, one cylinder is ejected out and the other cylinder is withdrawn, and simultaneously, the action of opening is completed; one retracting and one ejecting, and one closing action is completed at the same time. Although this device is capable of accomplishing automatic dispensing of the flux to some extent, the final dispensing effect is difficult to satisfy.

Due to the fact that manufacturing of the U-shaped ribs and assembling accuracy of the plate units are limited, a certain deviation may exist in the opening width of the U-shaped ribs, the opening width of the same U-shaped rib in the length direction may change greatly, when welding is conducted, if the spreading position of the welding flux cannot be adjusted along with the change of the opening width of the U-shaped ribs, the spreading and stacking height or the width of the welding flux is too large, the spreading and stacking width is too small, and the position deviation occurs.

How to design a submerged arc welding agent dispensing device which can reduce the error of the dispensing and accumulation of the welding agent and avoid causing welding defects becomes the technical problem to be solved by the application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inboard welding of U-shaped rib is with submerged arc welding agent scattering device to solve the problem that provides among the above-mentioned background art. The flux spreading device can be used for spreading flux when the fillet weld inside the U-shaped rib of the orthogonal special-shaped steel bridge deck is subjected to submerged arc welding, has good adaptability to the opening width deviation of the U-shaped rib, enables the flux spreading position to be always near the welding position, and can keep the flux spreading stacking height to be basically consistent.

In order to achieve the above object, the utility model provides a following technical scheme:

a submerged-arc welding agent spreading device for welding the inner side of a U-shaped rib comprises a storage bin for containing welding agents, a moving platform, a flow guide bin, a switch mechanism, a transmission mechanism and a power element, wherein the storage bin is fixedly mounted above the moving platform, a feed opening for allowing the welding agents to flow out is formed in the position, close to a welding seam of the U-shaped rib, of the storage bin, the flow guide bin is arranged below the feed opening, and the flow guide bin is arranged on the moving platform in a left-right sliding mode;

the opening and closing mechanism comprises a material baffle plate for plugging or opening the feed opening, and the material baffle plate is arranged at the bottom of the storage bin in a left-right sliding manner;

a power element for driving the diversion bin to move left and right is fixedly arranged on the moving platform; the diversion bin is in driving connection with the switch mechanism through a transmission mechanism;

when the power element drives the diversion bin to move outwards to be close to the inclined side wall of the U-shaped rib, the diversion bin drives the material baffle plate of the switch mechanism to move inwards through the transmission mechanism, and the feed opening is opened;

when the power element drives the diversion bin to retract below the storage bin, the diversion bin drives the striker plate of the switch mechanism to move outwards through the transmission mechanism, and the feed opening is blocked.

Preferably, the storage silo around including a pair of end plate that sets up, control a pair of curb plate and the bottom plate that sets up, end plate, curb plate and bottom plate concatenation fixed back, form the storage cavity that is used for holding the solder flux, the bottom plate is provided with two-layerly, has the bottom clearance that supplies the striker plate horizontal slip between the two-layer bottom plate, the feed opening run through two-layer bottom plate simultaneously. A base plate is further arranged between the two layers of base plates and can support the base plates, so that a bottom gap between the two layers of base plates is kept stable, and the striker plate can flexibly slide.

Preferably, the storage silo still include the slope baffle of middle part baffle and two symmetries, the bottom of middle part baffle forms the Y type baffle of inversion with two slope baffle concatenations fixed backs, Y type baffle separates the storage cavity for the lateral part storage cavity and the middle bottom cavity of the left and right sides, feed opening upper end and lateral part storage cavity intercommunication, the both ends of bottom cavity are penetrating. The two ends of the bottom cavity are through and can be used for a cable or a pipe body to pass through.

Preferably, the guide cabin comprises an inclined guide plate and a pair of guide cabin end plates, the front end and the rear end of the inclined guide plate are respectively and fixedly connected with the corresponding guide cabin end plates, a wheel bracket is fixedly installed on the outer wall of each guide cabin end plate, and a limiting wheel used for being in contact with the inclined side wall of the U-shaped rib is rotatably installed on the wheel bracket;

and the outer wall of the diversion bin end plate is fixedly connected with a diversion bin rotating shaft. The limiting wheel is fixed on the flow guide bin end plate through a wheel support and used for controlling the distance between the flow guide bin and the inclined side wall of the U-shaped rib, and the resistance of the moving platform to move back and forth can be reduced.

Preferably, the switch mechanism further comprises a pair of side connecting plates, the two ends of the striker plate penetrate out of the bottom gap and are fixedly connected with the side connecting plates, and the outer side walls of the side connecting plates are fixedly connected with switch rotating shafts.

Preferably, drive mechanism include stand frame, cross axle and swing piece, stand frame fixed mounting wears to establish on the moving platform and is fixed with the cross axle on the stand frame, rotates on the cross axle and installs the swing piece, upper portion bar notch and lower part bar notch have been seted up respectively to the both ends of swing piece, upper portion bar notch is connected with switch pivot sliding fit, lower part bar notch is connected with draft chamber pivot sliding fit. Under the cooperation of the transmission mechanism, the striker plate of the switch mechanism can be synchronously linked with the diversion bin.

Preferably, the power element adopts a double-head air cylinder, a single-head air cylinder, a double-head hydraulic cylinder or a single-head hydraulic cylinder.

Preferably, extend on the end plate outer wall of storage silo and be provided with a pair of tip floor, the tip floor passes through support bracket and moving platform fixed connection, the support bracket includes riser frame and a pair of strengthening rib grillage, riser frame and tip floor fixed connection, and bottom frame foot and moving platform fixed connection are passed through to riser frame bottom, strengthening rib grillage upper end and riser frame fixed connection, strengthening rib grillage lower extreme and moving platform fixed connection.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a water conservancy diversion storehouse remains parallel translation throughout, and the oblique lateral wall of accessible spacing round and U-shaped rib keeps in contact, and the solder flux falls down from the slope guide plate in water conservancy diversion storehouse and the oblique lateral wall of U-shaped rib between, can ensure piling up highly keeping unchangeable basically in less error range of solder flux, and the solder flux can keep unchangeable basically for the spread position of U-shaped rib.

2. In the utility model, the switch mechanism and the diversion bin move reversely, the diversion bin and the switch mechanism can be driven to perform linkage work through one power element, and when the power element drives the diversion bin to move outwards to be close to the inclined side wall of the U-shaped rib, the diversion bin drives the striker plate of the switch mechanism to move inwards through the transmission mechanism, and the feed opening is opened; when power element drive water conservancy diversion storehouse withdrawal storage silo below, the striker plate that the water conservancy diversion storehouse passes through drive mechanism drive switch mechanism moves to the outside, shutoff feed opening, operation convenient to use.

3. The utility model has the advantages of reasonable design, opening width deviation to the U-shaped rib has good adaptability, makes the position of solder flux spread near the welding position all the time, and the solder flux spread piles up the height and can keep basic unanimity.

Drawings

FIG. 1 is a schematic view of an assembled three-dimensional structure of a submerged arc welding agent spreading device for welding the inner side of a U-shaped rib and a workpiece to be welded;

FIG. 2 is a schematic perspective view of a submerged arc welding agent dispensing device for welding the inner side of a U-shaped rib;

FIG. 3 is a schematic perspective view of a submerged arc welding agent dispensing apparatus for welding the inside of a U-shaped rib with a hidden support bracket;

FIG. 4 is a schematic side view of a submerged arc welding flux dispensing apparatus for welding the inside of a U-shaped rib with a hidden support bracket;

FIG. 5 is a schematic view showing the structure of the end face of a submerged arc welding agent dispensing device for welding the inside of a U-shaped rib;

FIG. 6 isbase:Sub>A schematic view ofbase:Sub>A submerged arc welding agent dispensing device for welding the inner side ofbase:Sub>A U-shaped rib atbase:Sub>A section A-A in FIG. 4;

FIG. 7 is a schematic perspective view of a storage bin hidden by a submerged arc welding agent spreading device for welding the inner side of a U-shaped rib;

FIG. 8 is a schematic cross-sectional view of the hidden storage bin of the submerged arc welding agent dispensing device for welding the inner side of the U-shaped rib at the power element.

In the figure: 100-U-shaped rib, 101-bridge deck, 102-side storage cavity, 1-storage bin, 11-side plate, 12-end plate, 121-end rib plate, 13-middle partition plate, 14-inclined partition plate, 15-feed opening, 16-bottom plate, 17-backing plate, 2-support bracket, 21-vertical plate frame, 22-bottom frame foot, 23-reinforcing rib plate frame, 3-moving platform, 31-platform roller, 32-power element, 4-transmission mechanism, 41-vertical column frame, 42-transverse shaft, 43-swinging sheet, 431-upper strip-shaped notch, 432-lower strip-shaped notch, 5-striker plate, 51-side connecting plate, 52-switch rotating shaft, 6-guide bin, 61-limiting wheel, 62-inclined guide plate, 63-guide bin end plate and 64-guide bin rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the U-shaped rib of the orthogonal shaped bridge deck is mainly composed of a bottom bridge deck 101 and a plurality of U-shaped ribs 100 welded and fixed on the bridge deck 101, the U-shaped rib 100 has a long length, due to the limitation of the drawing, the whole U-shaped rib of the orthogonal shaped bridge deck is not shown in full view, and the inside fillet between the U-shaped rib 100 and the bridge deck 101 is usually required to be scattered with accumulated flux before welding, so that the U-shaped rib 100 and the bridge deck 101 can be firmly connected together after welding.

Referring to fig. 1 to 8, a submerged arc welding flux dispensing device for welding the inner side of a U-shaped rib comprises a storage bin 1 for containing a welding flux, a moving platform 3, a flow guide bin 6, a switching mechanism, a transmission mechanism 4 and a power element 32, wherein the storage bin 1 is fixedly mounted above the moving platform 3, a feed opening 15 (refer to fig. 6) for allowing the welding flux to flow out is formed in the position, close to a welding seam of the U-shaped rib 100, of the storage bin 1, the flow guide bin 6 is arranged below the feed opening 15, and the flow guide bin 6 is arranged on the moving platform 3 in a left-right sliding manner; obviously, the bottom of the mobile platform 3 may also be installed with platform rollers 31, which facilitate the flexible movement of the mobile platform 3 back and forth.

The opening and closing mechanism comprises a material baffle plate 5 for plugging or opening the feed opening 15, and the material baffle plate 5 is arranged at the bottom of the storage bin 1 in a left-right sliding manner;

the movable platform 3 is fixedly provided with a power element 32 for driving the diversion storehouse 6 to move left and right; the diversion bin 6 is in driving connection with the switch mechanism through the transmission mechanism 4;

when the power element 32 drives the diversion bin 6 to move outwards to be close to the inclined side wall of the U-shaped rib 100, the diversion bin 6 drives the material baffle plate 5 of the opening and closing mechanism to move inwards through the transmission mechanism 4, and the feed opening 15 is opened;

when the power element 32 drives the diversion bin 6 to retract below the storage bin 1, the diversion bin 6 drives the striker plate 5 of the switching mechanism to move outwards through the transmission mechanism 4, and the feed opening 15 is blocked.

The utility model discloses a theory of operation: before use, the storage bin 1 is filled with welding flux, when the welding flux is not removed, the power element 32 (such as an air cylinder) is in a contraction state, the diversion bin 6 is contracted below the storage bin 1, the outer edge of the upper end of the diversion bin 6 is away from the side edge of the bottom of the side plate 11 of the storage bin 1 by a certain distance, and the material baffle plate 5 of the switch mechanism seals the material outlet 15.

Obviously, the minimum opening width of the U-shaped rib 100 should be greater than the width of the entire submerged arc flux dispensing apparatus.

When the whole submerged arc welding flux spreading device is located at the position where the opening width of the U-shaped rib 100 is the minimum, the side plate 11 of the storage bin 1 is close to or contacts the inclined side wall of the U-shaped rib 100, when welding flux needs to be fed, the power element 32 (such as an air cylinder) extends out to drive the guide bin 6 to move outwards, the outer edge of the upper end of the guide bin 6 is flush with the bottom side edge of the side plate 11 of the storage bin 1, the outer side of the guide bin 6 is also close to or contacts the inclined side wall of the U-shaped rib 100, in addition, under the synchronous action of the transmission mechanism 4, the material baffle 5 of the opening and closing mechanism moves inwards for a certain distance, the feeding opening 15 is completely opened, the welding flux flows out, and the welding flux falls to the welding seam at the corner of the U-shaped rib 100 along the gap space between the inclined guide plate 62 of the guide bin 6 and the inclined side wall of the U-shaped rib 100.

Because the length of the U-shaped rib 100 is long, the opening width of the U-shaped rib 100 has a certain deviation at different positions, when the whole submerged arc welding flux spreading device moves to a position where the opening width of the U-shaped rib 100 is relatively wide, a certain gap is formed between the side plate 11 of the storage bin 1 and the inclined side wall of the U-shaped rib 100, the power element 32 (such as an air cylinder or a hydraulic cylinder) continues to extend under the action of internal air pressure or hydraulic pressure, so that the guide bin 6 moves outwards, the outer edge of the upper end of the guide bin 6 exceeds the bottom side edge of the side plate 11 of the storage bin 1 and then continues to move until the outer side of the guide bin 6 contacts the inclined side wall of the U-shaped rib 100, the gap space between the inclined guide plate 62 of the guide bin 6 and the inclined side wall of the U-shaped rib 100 can be kept unchanged basically, therefore, the flowing-out welding flux can be spread at the welding flux at the welding seam at the inner corner of the U-shaped rib 100 all the time, and the stacking height of the welding flux can be kept unchanged basically in a small error range, and the spreading position of the U-shaped rib 100 can be kept unchanged basically, and the quality of the subsequent welded panel 101 and the U-shaped rib 100 can be guaranteed.

Since the length of the U-shaped rib 100 is long, the length of the entire submerged arc flux dispensing device is relatively short compared to the length of the U-shaped rib 100, and therefore, when flux dispensing is performed in the length direction of the U-shaped rib 100, the guide silo 6 can be kept approximately parallel to the inclined side walls of the U-shaped rib 100, and the gap space between the inclined guide plate 62 of the guide silo 6 and the inclined side walls of the U-shaped rib 100 can be kept substantially constant.

In this embodiment, the storage bin 1 may specifically adopt the following structure: storage silo 1 a pair of curb plate 11 and bottom plate 16 that set up about, a pair of end plate 12 that sets up around including, end plate 12, curb plate 11 and bottom plate 16 splice fixed back, form the storage cavity that is used for holding the solder flux, bottom plate 16 is provided with two-layerly, has the bottom clearance that supplies striker plate 5 horizontal slip between the two-layer bottom plate 16, feed opening 15 run through two-layer bottom plate 16 simultaneously. A backing plate 17 is further arranged between the two layers of bottom plates 16, and the backing plate 17 can support the bottom plates 16, so that the bottom gap between the two layers of bottom plates 16 is kept stable, and the striker plate 5 can flexibly slide.

The storage bin 1 further comprises a middle partition plate 13 and two symmetrical inclined partition plates 14, the bottom of the middle partition plate 13 is spliced and fixed with the two inclined partition plates 14 to form an inverted Y-shaped partition plate, the storage cavity is divided into a lateral storage cavity 102 on the left side and a lateral storage cavity 102 on the right side and a middle bottom cavity by the Y-shaped partition plate, the upper end of the feed opening 15 is communicated with the lateral storage cavity 102, and two ends of the bottom cavity are through and can be used for a cable or a pipe body to penetrate through. With two side reservoirs 102, flux can be dispensed simultaneously at both inside fillet welds of the U-shaped rib 100.

In this embodiment, the diversion silo 6 may specifically adopt the following structure: the flow guide cabin 6 comprises an inclined flow guide plate 62 and a pair of flow guide cabin end plates 63, the front end and the rear end of the inclined flow guide plate 62 are respectively and fixedly connected with the corresponding flow guide cabin end plates 63, a wheel bracket is fixedly arranged on the outer wall of each flow guide cabin end plate 63, and a limiting wheel 61 used for being in contact with the inclined side wall of the U-shaped rib 100 is rotatably arranged on each wheel bracket; specifically, the bottom of the inclined guide plate 62 can also be integrally extended with a guide bottom plate, semicircular holes can be distributed on the guide bottom plate to facilitate the flux to flow out, and the inclined guide plate 62 can enable the flux to flow along the surface of the inclined guide plate; the limiting wheel 61 is fixed on the flow guide bin end plate 63 through a wheel support and is used for controlling the distance between the flow guide bin 6 and the inclined side wall of the U-shaped rib 100, preventing the flow guide bin 6 from directly scratching the inclined side wall of the U-shaped rib 100, and reducing the resistance of the moving platform 3 to move forwards and backwards.

And a diversion bin rotating shaft 64 is fixedly connected to the outer wall of the diversion bin end plate 63. The diversion bin rotating shaft 64 is used for connecting the transmission mechanism 4.

In this embodiment, the switch mechanism further includes a pair of side connection plates 51, two ends of the striker plate 5 penetrate through the bottom gap and are fixedly connected with the side connection plates 51, and a switch rotating shaft 52 is fixedly connected to the outer side walls of the side connection plates 51. The switch rotating shaft 52 is used for connecting the transmission mechanism 4, so that the striker plate 5 and the diversion bin 6 of the switch mechanism can be synchronously linked.

In this embodiment, drive mechanism 4 include stand 41, cross axle 42 and swing piece 43, stand 41 fixed mounting wears to establish on the stand 41 and is fixed with cross axle 42 on the moving platform 3, and swing piece 43 is installed in the rotation on the cross axle 42, and upper portion bar notch 431 and lower part bar notch 432 have been seted up respectively to the both ends of swing piece 43, and upper portion bar notch 431 is connected with switch pivot 52 sliding fit, and lower part bar notch 432 and draft chamber pivot 64 sliding fit are connected.

When the diversion warehouse 6 moves towards the outside, the diversion warehouse rotating shaft 64 can stir the swinging sheet 43 to rotate through the lower strip-shaped notch 432, and the rotating swinging sheet 43 drives the switch rotating shaft 52 through the upper strip-shaped notch 431, so that the material baffle 5 is driven to move towards the inside, and the feed opening 15 is opened.

Wherein, the power element 32 adopts a double-head cylinder, a single-head cylinder, a double-head hydraulic cylinder or a single-head hydraulic cylinder, etc.

Obviously, in this embodiment, the power element 32 is a double-head cylinder, two double-head cylinders are provided, and correspond to the front end and the rear end of the diversion chamber 6 respectively, and the air pressure introduced into the double-head cylinder should obviously be smaller than the internal deformation stress of the U-shaped rib 100, so as to prevent the U-shaped rib 100 from deforming while ensuring that the limiting wheel 61 of the diversion chamber 6 can always abut against the oblique side wall of the U-shaped rib 100.

Obviously, the double-head cylinder can be provided with one cylinder, and the cylinder is arranged at a corresponding position in the middle of the diversion storehouse 6, and can drive the flexible movement of the diversion storehouse 6.

Wherein, extend on the end plate 12 outer wall of storage silo 6 and be provided with a pair of tip floor 121, tip floor 121 passes through support bracket 2 and 3 fixed connection of moving platform, support bracket 2 includes riser frame 21 and a pair of reinforcing rib grillage 23, riser frame 21 and tip floor 121 fixed connection, and bottom frame foot 22 and 3 fixed connection of moving platform are passed through to riser frame 21 bottom, reinforcing rib grillage 23 upper end and riser frame 21 fixed connection, reinforcing rib grillage 23 lower extreme and 3 fixed connection of moving platform.

Specifically, the sectional shape of the U-shaped rib 100 of the riser frame 21 may be trapezoidal, a triangular hole is left in the middle for passing through a cable and a pipe, a bottom leg 22 is provided in the middle of the lower part of the riser frame 21, and two sides are hollowed out for arranging the transmission mechanism 4; reinforcing rib grillage 23 sets up in the both sides of riser frame 21 to consolidate riser frame 21, all adopt bolted connection, convenient to detach with riser frame 21, moving platform 3.

In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for the convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.

Claims (8)

1. A submerged arc welding agent spreading device for welding the inner side of a U-shaped rib comprises a storage bin (1) used for containing welding agent and a moving platform (3), and is characterized in that: the welding flux welding device is characterized by further comprising a diversion bin (6), a switch mechanism, a transmission mechanism (4) and a power element (32), wherein the storage bin (1) is fixedly mounted above the moving platform (3), a feed opening (15) for the flux to flow out is formed in the position, close to a welding seam of the U-shaped rib (100), of the storage bin (1), the diversion bin (6) is arranged below the feed opening (15), and the diversion bin (6) is arranged on the moving platform (3) in a left-right sliding mode;

the opening and closing mechanism comprises a material baffle plate (5) for plugging or opening a feed opening (15), and the material baffle plate (5) is arranged at the bottom of the storage bin (1) in a left-right sliding manner;

a power element (32) for driving the diversion bin (6) to move left and right is fixedly arranged on the moving platform (3); the diversion bin (6) is in driving connection with the switch mechanism through the transmission mechanism (4);

when the power element (32) drives the diversion bin (6) to be close to the inclined side wall of the U-shaped rib (100) towards the outer side, the diversion bin (6) drives the striker plate (5) of the opening and closing mechanism to move towards the inner side through the transmission mechanism (4), and the feed opening (15) is opened;

when the power element (32) drives the diversion bin (6) to retract to the lower part of the storage bin (1), the diversion bin (6) drives the striker plate (5) of the switch mechanism to move outwards through the transmission mechanism (4) to plug the feed opening (15).

2. The submerged arc welding agent spreading device for welding the inner side of a U-shaped rib according to claim 1, characterized in that: storage silo (1) a pair of end plate (12) that sets up around including, control a pair of curb plate (11) and bottom plate (16) that set up, end plate (12), curb plate (11) and bottom plate (16) splice fixed back, form the storage cavity that is used for holding the solder flux, bottom plate (16) are provided with two-layerly, have the bottom clearance that supplies striker plate (5) horizontal slip between two-layer bottom plate (16), feed opening (15) run through two-layer bottom plate (16) simultaneously.

3. The submerged arc welding agent spreading device for welding the inner side of the U-shaped rib according to claim 2, characterized in that: storage silo (1) still include the slope baffle (14) of middle part baffle (13) and two symmetries, the bottom of middle part baffle (13) forms the Y type baffle of invering with two slope baffle (14) concatenations fixed backs, Y type baffle is the lateral part storage chamber and the middle bottom cavity for the left and right sides with the storage cavity partition, feed opening (15) upper end and lateral part storage chamber intercommunication, the both ends of bottom cavity are penetrating.

4. The submerged arc welding agent spreading device for welding the inner side of the U-shaped rib according to claim 3, characterized in that: the flow guide cabin (6) comprises an inclined flow guide plate (62) and a pair of flow guide cabin end plates (63), the front end and the rear end of the inclined flow guide plate (62) are respectively and fixedly connected with the corresponding flow guide cabin end plates (63), a wheel bracket is fixedly installed on the outer wall of each flow guide cabin end plate (63), and a limiting wheel (61) used for being in contact with the inclined side wall of the U-shaped rib (100) is rotatably installed on each wheel bracket;

and a diversion bin rotating shaft (64) is fixedly connected to the outer wall of the diversion bin end plate (63).

5. The submerged arc welding agent spreading device for welding the inner side of a U-shaped rib according to claim 4, characterized in that: the switch mechanism further comprises a pair of side connecting plates (51), the two ends of the material baffle plate (5) penetrate through the bottom gap and are fixedly connected with the side connecting plates (51), and the outer side walls of the side connecting plates (51) are fixedly connected with switch rotating shafts (52).

6. The submerged arc welding agent spreading device for welding the inner side of the U-shaped rib according to claim 5, characterized in that: drive mechanism (4) include stand (41), cross axle (42) and swing piece (43), stand (41) fixed mounting is on moving platform (3), wear to establish on stand (41) and be fixed with cross axle (42), rotate on cross axle (42) and install swing piece (43), upper portion bar notch (431) and lower part bar notch (432) have been seted up respectively to the both ends of swing piece (43), upper portion bar notch (431) are connected with switch pivot (52) sliding fit, lower part bar notch (432) are connected with draft bin pivot (64) sliding fit.

7. A submerged arc welding agent dispensing device for welding the inside of a U-shaped rib according to any one of claims 1 to 6, characterized in that: the power element (32) adopts a double-head air cylinder, a single-head air cylinder, a double-head hydraulic cylinder or a single-head hydraulic cylinder.

8. A submerged arc welding agent spreading device for welding the inside of a U-shaped rib according to any one of claims 2 to 6, characterized in that: extend on end plate (12) outer wall of storage silo (1) and be provided with a pair of tip floor (121), tip floor (121) are through support bracket (2) and moving platform (3) fixed connection, support bracket (2) are including riser frame (21) and a pair of reinforcing rib grillage (23), riser frame (21) and tip floor (121) fixed connection, and bottom frame foot (22) and moving platform (3) fixed connection are passed through to riser frame (21) bottom, reinforcing rib grillage (23) upper end and riser frame (21) fixed connection, reinforcing rib grillage (23) lower extreme and moving platform (3) fixed connection.

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