CN218081053U - Welding pedestal for preventing steel box girder from welding deformation - Google Patents

Abstract

The utility model discloses a prevent steel case roof beam welding deformation's welding pedestal, include: the steel plate and the U-shaped ribs are fixed on the base through the mechanical arm, the base is lifted up the lifting platform during welding to enable the steel plate to be inverted in advance, and the inverted arch deformation of the steel plate is recovered through the platform descending after the welding is completed. The utility model discloses an before utilizing the welding, arm, welding limiting plate and lift platform, the three cooperation carries out the anti-arch deformation in advance that once can resume to the steel sheet to offset the deformation that the welding caused.

Description

Welding pedestal for preventing steel box girder from welding deformation

Technical Field

The utility model relates to a steel case roof beam field of making especially relates to a prevent steel case roof beam welding deformation's welding pedestal.

Background

The steel box girder is generally formed by connecting a top plate, a bottom plate, a web plate, a diaphragm plate, a longitudinal diaphragm plate, a stiffening rib and the like in a full welding mode, wherein the top plate is a sine orthotropic panel formed by a cover plate and the longitudinal stiffening rib. The temperature distribution of the sine orthotropic panel is not uniform in the welding process, and uncontrollable deformation of the sine orthotropic panel along the bending and arching of a welding seam often occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent welding pedestal of steel case roof beam welding deformation aims at solving steel case roof beam unit spare welding process, because the crooked deformation problem of arching of edge welding seam of the inhomogeneous production of temperature distribution during the welding.

In order to realize the purpose, the utility model adopts the following technical proposal:

a prevent steel case roof beam welding deformation's welding pedestal includes: the device comprises a base, a lifting platform, a mechanical arm and a welding limiting plate for placing a steel plate;

the mechanical arms are arranged on two opposite sides of the base in pairs in the width direction, and each pair of mechanical arms is used for clamping two ends of the welding limiting plate, pressing the welding limiting plate on a steel plate and pressing two opposite edges of the steel plate on the base;

the lifting platform is arranged in the middle of the width direction on the base and is used for abutting against the steel plate from the bottom, and the lifting platform can lift in the vertical direction to adjust the arching degree of the steel plate.

Wherein the robot arm includes: the clamping device, the connecting column, the moving device and the telescopic unit are used for pressing the welding limiting plate and the steel plate; two sides of the base in the width direction are provided with sliding grooves extending along the length direction of the base; the cross section of the connecting column is rectangular, the top of the connecting column is connected with the clamping device, and the bottom of the connecting column is connected with the moving device; the connecting column is at least partially arranged in the sliding groove; the bottom of the telescopic unit is telescopically connected with the connecting column, and the top of the telescopic unit is rotatably connected with the clamping device; the moving device is movably arranged in the sliding groove along the sliding groove.

Wherein the moving device is rotatably arranged relative to the connecting column; the sliding groove comprises a limiting channel penetrating through the upper surface of the base and a steering channel communicated with the bottom surface of the limiting channel, the moving device is arranged in the steering channel, and the connecting column is arranged in the limiting channel; the cross section of the connecting column and the cross section of the limiting channel are both rectangular, and in the rotating process of the mobile device, the connecting column is limited in the circumferential direction by the limiting channel.

Wherein the mobile device comprises: the device comprises a rotating platform, a balancing unit and an active unit; the balance unit and the driving unit are fixedly arranged at the bottom of the rotating platform, the top of the rotating platform is rotatably connected with the connecting column, and the driving unit is used for driving the rotating platform to move in the sliding groove; the balance unit is used for matching with the active unit to keep balance of the rotating platform.

As a further description of the present embodiment: the lifting platform extends from one end to the other end of the base in the length direction.

As a further description of the present embodiment: the telescopic unit comprises a base, a telescopic column and a control unit; the telescopic column bottom is in telescopic connection with the connecting column, the top is fixed to the base, the upper end of the base is in rotatable connection with the clamping device, and the control unit is located inside the base and used for controlling the motion state of the whole mechanical arm.

As a further description of the present embodiment: the clamping device comprises a shell fixed on the base, a driving device and a clamping part; the clamping device comprises a shell, a clamping part and a driving device, wherein a space for the clamping part to move is formed in the shell, the driving device comprises a screw rod fixed on the shell and a motor coupled with the screw rod, the clamping part comprises a pair of rectangular blocks in threaded connection with the screw rod and partially extending out of the clamping part, and the pair of rectangular blocks are used for enabling the screw rod to be close to or far away from each other in the rotating process.

As a further description of the present embodiment: the balancing unit includes: the balance frame, the balance wheel and the connecting shaft; the top of the balance frame is fixed with the bottom of the rotating platform, the bottom of the balance frame is connected with the connecting shaft, the balance wheels are rotatably arranged on the connecting shaft, and the balance unit and the active unit are arranged in the front and back direction of the mechanical arm in the advancing process.

As a further description of the present embodiment: the active unit includes: the driving frame, the driving wheel and the power source; the top of the driving frame is fixed with the bottom of the rotating platform, the bottom of the driving frame is connected with the power source, and the driving wheel is rotatably arranged on the power source.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a arm centre gripping welding limiting plate, when lift platform rose, the steel sheet got into restorable invert deformation state under arm, welding limiting plate, lift platform three's effect, waited to restore invert deformation after the welding was accomplished again to offset the welding deformation because of the welding production.

Drawings

Fig. 1 is a schematic view of a steel box girder base according to an embodiment of the present invention;

fig. 2 is a side view of a steel box girder base according to an embodiment of the present invention;

fig. 3 is a schematic view of a robotic arm according to an embodiment of the present invention;

fig. 4 is a sectional view of a sliding groove according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the patent and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular manner of operation, and are not to be construed as limiting the patent.

Referring to fig. 1 and 2, an embodiment of the utility model provides a prevent steel case roof beam welding deformation's welding pedestal, include: base 4, lift platform 41, arm 1, welding limiting plate 2. The base 4 is rectangular, four mutually communicated sliding grooves 42 are formed in the edges of the periphery of the base, a lifting platform 41 capable of lifting and extending towards the length direction is arranged in the middle of the base along the width direction, and the mechanical arm 1 horizontally and vertically slides in the sliding grooves 42. In other embodiments, only two opposite sliding grooves 42 may be formed on the edge of the base 4.

The welding limit plate 2 is an arc-shaped thin plate, and the lower end of the welding limit plate is provided with a plurality of holes matched with the U-shaped ribs 5. Before welding, arm 1 centre gripping welding limiting plate 2 utilizes the hole that welding limiting plate 2 lower extreme and U type rib 5 match to be fixed in on the steel sheet 3 with U type rib 5. The fixed steel plate 3 is jacked by the lifting platform 41 along the middle part of the width direction to form inverted arch deformation in advance, and then the U-shaped ribs 5 and the steel plate 3 are welded. After the welding is completed, the telescopic column 132 jacks the clamping device to release the fixation of the steel plate 3, and the lifting platform descends to restore the inverted arch deformation of the steel plate 3, so that the effect of offsetting the welding deformation generated by the welding is realized.

In the present embodiment, the sliding grooves 42 disposed on the top surface of the base 4 are rectangular and annular as a whole, and the four top surface joints formed by two mutually communicated sliding grooves are L-shaped. In other embodiments, the shape of the connection of the notches of the slide groove 42 on the top surface of the base plate 4 includes, but is not limited to, a cross, a T, etc. When the shape of the notch connection part is a cross shape, a T shape and the like and has an extension shape, a plurality of bases are spliced and connected, so that a processing procedure chain is formed.

Referring to fig. 4, the sliding groove 42 is composed of a limiting passage 421 and a turning passage 422. The upper end of the limiting channel 421 is flush with the top surface of the welding platform, and the lower end of the limiting channel is communicated with the steering channel. The cross sections of the ports of the limiting channel 421 and the turning channel 422 are rectangular.

In this embodiment, the port cross-sectional width of the stopper channel 421 is smaller than the diversion channel. In other embodiments, the port cross-sectional width of the spacing channel 421 coincides with the diverting channel 422. In the present embodiment, the cross section of the end of the sliding groove 42 forms a convex groove body with a narrow top and a wide bottom. In other embodiments, the cross-sectional shape of the port of the sliding groove 42 includes, but is not limited to, a square, an L-shape.

Referring to fig. 3, the robot arm 1 includes a clamping device, a housing 14, a base 131, a telescopic column 132, a connecting column 6, and a moving device. The housing 14 has a cavity for the movement of the clamping device, the upper end of the base 131 is rotatably connected to the housing 14, the lower end of the base 131 is fixed to the telescopic post 132, and the base 131 has a control unit therein. The bottom of the connecting column 6 is connected with the moving device in a relatively rotating mode, and the control unit controls the motion state of the whole mechanical arm 1.

The clamping device comprises a clamping part 12 and a driving device 11. The driving device 11 is a motor coupled with a connecting screw rod and used for driving the clamping part 12 to move relatively, the clamping part comprises a pair of rectangular blocks which are in threaded connection with the screw rod and partially extend out of the clamping part 12, and the pair of rectangular blocks are used for being close to or far away from each other in the rotation process of the screw rod.

In the present embodiment, the clamping portion 12 is a pair of rectangular blocks, and the driving device 11 is composed of a motor and a screw. The rectangle piece is close to the inside trompil of one end at edge, and the downthehole surface is carved with the screw thread, and the screw thread that two rectangle piece downthehole surfaces were carved with is turned around to the opposite. One end of the screw rod is coupled with the motor, and when the control unit controls the motor to rotate in the forward direction, the two rectangular blocks move in opposite directions so as to clamp one side of the welding limiting plate; when the control unit controls the electrode to rotate reversely, the two rectangular blocks move relatively, so that the welding limiting plate 2 is loosened. In other embodiments, the clamp portions 12 are in multiple pairs. When the clamping parts are in multiple pairs, at least one pair of clamping parts 12 clamps the welding limiting plate 5; a group of clamping parts 12 are distributed along the height direction of the connecting column 6 and are driven by a driving device 11 to clamp the steel plate 3. The shape of the clamping portion 12 includes, but is not limited to, an arc, a circle.

The mobile device includes: the device comprises a rotating platform 7, a balance unit 9 and a driving unit 8; the balance unit 9 and the driving unit 8 are fixedly arranged at the bottom of the rotating platform 7, the top of the rotating platform 7 is rotatably connected with the connecting column 6, and the driving unit 8 is used for driving the rotating platform 7 to move in the sliding groove 42; the balancing unit 9 is used for keeping balance of the rotating platform 7 in cooperation with the active unit 8.

When the vehicle turns, the control unit controls the rotating platform 7 to rotate to change the moving direction of the moving device in the sliding groove 42, and the connecting column is circumferentially limited in the limiting channel 421. When the entire robot arm 1 is not oriented toward the base 4 after turning, the control unit controls the base 131 to rotate so that the entire gripping device is always oriented toward the base 4.

The balancing unit 9 includes: balance frame 91, balance wheel 92, connecting shaft 93. The top of the balance frame 91 is fixed with the bottom of the rotating platform 7, the bottom of the balance frame is connected with the connecting shaft 93, the balance wheel 92 is rotatably arranged on the connecting shaft 93, and the balance unit 9 and the active unit 8 are arranged in the front and back direction along the traveling direction in the traveling process of the mechanical arm 1.

The driving unit 8 comprises a driving frame 81, a driving wheel 82 and a power source 83; the top of the driving frame 81 is fixed with the bottom of the rotating platform 7, the bottom of the driving frame is connected with the power source 83, and the driving wheel 82 is rotatably arranged on the power source

In the embodiment, the balance wheel assemblies are a group, and the active frame 81 and the balance frame 91 are distributed at a certain angle. During the whole moving process of the mechanical arm 1, the balance unit 9 and the active unit 8 are respectively arranged at the front and back positions in the moving direction of the mechanical arm 1. In other embodiments, the active frame 81 may be parallel to the balance frame 91.

The specific implementation process comprises the following steps:

after the steel plate 3 at the bottom of the steel box girder is subjected to shot blasting and rust removal, the steel plate 3 is placed on a base 4. The two pairs of mechanical arms 1 are respectively arranged at the front and rear positions on the opposite side of the steel plate 3 along the length direction. After the steel plate 3 is laid on the base, the two pairs of mechanical arms respectively clamp one welding limiting plate 2 to press downwards, and the welding limiting plate 2 fixes the steel plate 3 on the base 4.

And after the steel plate 3 is fixed, inserting the U-shaped rib 5 into the limiting hole of the welding limiting plate. After the U-shaped ribs 5 are installed, the lifting platform 41 is lifted, the clamping devices on the two sides clamp the welding limiting plates to press down the fixed steel plate 3, and therefore the steel plate 3 on the base 4 is jacked to form inverted arch deformation.

After the steel plate 3 on the base 4 is inverted arch-shaped, the welding robot starts welding from the middle of the steel plate in the length direction to two sides at the same time. When the welding position is to be welded to the position near the welding position limiting plate 2, one pair of mechanical arms 1 is kept in an original state, and the other pair of mechanical arms 1 lifts the clamped welding position limiting plate 2 and moves to the middle part of the welded steel plate 3. After aligning 3 between the welding limit plate 2 and the steel plate, the mechanical arm 1 presses the welding limit plate 2 down onto the steel plate 3 and maintains the state, and the other pair of the mechanical arms 1 which are not moved repeats the same steps and moves from one end of the steel plate 3 to the middle part of the steel plate 3 which is welded.

After the position of the welding limiting plate 2 is replaced, the welding robot continues to weld downwards from the welding seam which is stopped welding last time until all the U-shaped ribs 5 and the steel plate 3 are welded. After the welding of the U-shaped rib 5 is completed, the mechanical arm 1 clamps the welding limiting plate 2 and slightly ascends, and the lifting platform 41 descends, so that the inverted arch deformation of the steel plate 3 is recovered.

After the welding of the steel plate 3 and the U-shaped rib 5 is completed, the welding limiting plate 2 is moved away by other instruments, and the mechanical arm 1 moves to the next process along with the sliding groove 42, or moves to the sliding groove 42 where the width direction of the base 4 is located by changing the moving direction to wait for the next steel plate 3 to be welded.

The utility model discloses the beneficial effect who has as follows: the welding limiting plate is clamped by the mechanical arm, when the lifting platform is lifted, the steel plate enters a recoverable inverted arch deformation state under the action of the three, and the inverted arch deformation is recovered after the welding is finished, so that the welding deformation generated by the welding is offset; the welding precision is improved through automatic operation, and deformation caused by welding operation of constructors is reduced.

The foregoing is illustrative of the present disclosure and it will be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles of the disclosure, the scope of which is defined by the appended claims.

Claims (9)

1. The utility model provides a prevent steel case roof beam welding deformation's welding pedestal which characterized in that includes: the device comprises a base (4), a lifting platform (41), a mechanical arm (1) and a welding limiting plate (2) for placing a steel plate (3);

the mechanical arms (1) are arranged on two opposite sides of the base (4) in pairs, each pair of mechanical arms (1) is used for clamping two ends of the welding limiting plate (2), pressing the welding limiting plate (2) on the steel plate (3) and pressing two opposite edges of the steel plate (3) on the base (4);

the lifting platform (41) is arranged in the middle of the width direction on the base (4) and used for being abutted to the steel plate (3) from the bottom, and the lifting platform can lift in the vertical direction to adjust the arching degree of the steel plate (3).

2. A welding bench for preventing welding deformation of steel box girder according to claim 1, wherein said elevating platform (41) is extended from one end to the other end of the base in the length direction.

3. Welding bench for preventing welding deformation of steel box girders according to claim 1, characterized in that said robot arm (1) comprises: the clamping device is used for pressing the welding limiting plate (2) and the steel plate (3), the connecting column (6), the moving device and the telescopic unit (13) are arranged; two sides of the base (4) in the width direction are provided with sliding grooves (42) extending along the length direction;

the cross section of the connecting column (6) is rectangular, the top of the connecting column is connected with the clamping device, the bottom of the connecting column is connected with the moving device, and at least part of the connecting column (6) is arranged in the sliding groove (42);

the bottom of the telescopic unit (13) is telescopically connected with the connecting column (6), and the top of the telescopic unit is rotatably connected with the clamping device;

the moving device is movably arranged in the sliding groove (42) along the sliding groove (42).

4. A welding bench for preventing welding deformation of steel box girders according to claim 3, characterized in that said moving means is rotatably arranged with respect to said connecting column (6); the sliding groove (42) comprises a limiting channel (421) penetrating through the upper surface of the base (4) and a turning channel (422) communicated with the bottom surface of the limiting channel (421), the moving device is arranged in the turning channel (422), and the connecting column (6) is arranged in the limiting channel (421); the cross section of the connecting column (6) and the cross section of the limiting channel (421) are both rectangular, and in the rotating process of the mobile device, the connecting column (6) is limited in the circumferential direction by the limiting channel (421).

5. The welding bench for preventing welding deformation of steel box girders according to claim 3, characterized in that the telescopic unit (13) comprises a base (131), a telescopic column (132) and a control unit; the telescopic column (132) is connected with the connecting column (6) in a telescopic mode, the top of the telescopic column is fixed to the base (131), the upper end of the base (131) is connected with the clamping device in a rotating mode, and the control unit is located inside the base (131) and used for controlling the motion state of the whole mechanical arm.

6. A welding bench for preventing steel box girder welding deformation according to claim 5, characterized in that said clamping means comprises a housing (14) fixed on said base (131), a driving means (11) and a clamping portion (12); the utility model discloses a clamping device, including casing (14), drive arrangement (11) are equipped with the confession in casing (14) the space of clamping part (12) activity, drive arrangement (11) are including fixing lead screw on casing (14) and the motor with the lead screw coupling, clamping part (12) including threaded connection in on the lead screw and part stretch out a pair of rectangular block of clamping part (12), a pair of rectangular block be used for the lead screw rotates the in-process and is close to each other or keep away from.

7. A welding bench for preventing welding deformation of steel box girders according to any one of claims 3-6, characterized in that said moving means comprises: the device comprises a rotating platform (7), a balance unit (9) and a driving unit (8); the balance unit (9) and the driving unit (8) are fixedly arranged at the bottom of the rotating platform (7), the top of the rotating platform (7) is rotatably connected with the connecting column (6), and the driving unit (8) is used for driving the rotating platform (7) to move in the sliding groove (42); the balance unit (9) is used for matching with the active unit (8) to keep the balance of the rotating platform (7).

8. Welding bench for preventing welding deformation of steel box girders according to claim 7, characterized in that the balancing unit (9) comprises: a balance frame (91), balance wheels (92) and a connecting shaft (93); the top of the balance frame (91) is fixed with the bottom of the rotating platform (7), the bottom of the balance frame is connected with the connecting shaft (93), the balance wheel (92) is rotatably arranged on the connecting shaft (93), and the balance unit (9) and the active unit (8) are arranged in the front and back direction of the mechanical arm (1) in the advancing process.

9. A welding bench for preventing welding deformation of steel box girders according to claim 7, characterized in that said active unit (8) comprises: a driving frame (81), a driving wheel (82) and a power source (83); the top of the driving frame (81) is fixed with the bottom of the rotating platform (7), the bottom of the driving frame is connected with the power source (83), and the driving wheel (82) is rotatably arranged on the power source.

Images