Positioning control device and method for heavy-load box type steel structure double-shear-plate node welding

Abstract

The invention relates to the technical field of steel structure welding, in particular to a positioning control device and method for heavy-load box-type steel structure double-shear-plate joint welding. The positioning control device comprises a table body, a fixing plate is horizontally and fixedly mounted on the upper surface of the table body, and first mounting openings are symmetrically and horizontally formed in the surface of the fixing plate; a first threaded rod is horizontally and rotatably mounted in the first mounting opening, and a first positioning plate sleeves the first threaded rod in a threaded manner; and a second mounting opening is horizontally formed in the surface of the first positioning plate, a second threaded rod is horizontally and rotatably mounted in the second mounting opening, and the second threaded rod is in threaded connection with a second positioning plate in a sleeving mode. Through cooperation of the fixing plate, the first threaded rod, the first positioning plate, the second threaded rod and the second positioning plate, auxiliary positioning can be rapidly conducted on the shear plate, manual supporting is not needed, the stability of positioning the shear plate is improved, meanwhile, the precision of a machined node structure is guaranteed, auxiliary positioning can be conducted on shear plates of different sizes, and practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding, and in particular to a positioning control device and method for welding of double shear plate nodes of a heavy-load box-type steel structure. Background Art

[0002] In order to facilitate the support of the building, on-site spliced ​​box-type steel structures are often used as reinforcement tools at the construction site, and these steel columns also need to be installed using nodes. The double shear plates in the heavy-loaded box-type steel structures need to be assembled and welded on special welding machines.

[0003] Most of the current welding machine tools still use semi-automatic adjustment methods, which require manual support to hold the shear plates together for welding. This is not only unsafe but also difficult to maintain balance, and the accuracy of the processed node structure is also difficult to guarantee. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: most of the welding machine tools at this stage still adopt a semi-automatic adjustment method, which requires manual support to fit the shear plates in one place for the welding machine to weld, which is not only unsafe but also difficult to maintain balance, and the accuracy of the processed node structure is also difficult to guarantee. The proposed positioning control device and method for double shear plate node welding of heavy-load box-type steel structures are provided.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A positioning control device for welding of double shear plate nodes of heavy-duty box-shaped steel structures comprises a platform, a welding mechanical arm is fixedly installed on the back of the platform, a fixing plate is horizontally fixedly installed on the upper surface of the platform, a first mounting opening is symmetrically and horizontally opened on the surface of the fixing plate, a first threaded rod is horizontally rotatably installed in the first mounting opening, and a first positioning plate is threadedly sleeved on the first threaded rod;

[0007] A second mounting opening is horizontally opened on the surface of the first positioning plate, a second threaded rod is horizontally rotatably mounted in the second mounting opening, a second positioning plate is threadedly sleeved on the second threaded rod, ends of the first threaded rod and the second threaded rod respectively pass through the fixing plate and the first positioning plate, and both are fixedly sleeved with adjusting wheels.

[0008] Preferably, a mounting groove is provided on the surface of the platform, and a through opening connected to the mounting groove is symmetrically and vertically provided on the upper surface of the platform, and an adsorption component for adsorbing the shear plate is provided in the mounting groove.

[0009] Preferably, the adsorption assembly includes a T-shaped slide plate, two hollow cylinders symmetrically and vertically fixedly installed on the upper surface of the slide plate, and two suction cups respectively fixedly installed on the top of the two hollow cylinders, the two hollow cylinders are respectively located in two through openings, and the lower surface of the slide plate is symmetrically provided with rotating openings respectively connected with the two hollow cylinders, a desorption component is provided in the rotating opening, and the desorption component is used to release the adsorption of the suction cup, a third threaded rod is vertically and rotatably installed in the mounting groove, the slide plate is threadedly sleeved on the third threaded rod, and the rotation is restricted by a limiting component.

[0010] Preferably, the desorption component includes a rotating shaft and a sealing plate, the rotating shaft is sealingly rotatably installed in the rotating port, and one end located in the hollow cylinder is fixedly connected to the surface of the sealing plate through a connecting rod, a vent is opened on the surface of the hollow cylinder, and the sealing plate is used to cover the vent, and a gear is fixedly installed at one end of the rotating shaft located outside, and the gear is connected to the slide plate through an elastic component.

[0011] Preferably, the limiting component comprises a limiting rod vertically fixedly installed in the installation groove, and the sliding plate is slidably sleeved on the limiting rod.

[0012] Preferably, the elastic component comprises a torsion spring sleeved on the rotating shaft, and two ends of the torsion spring are respectively fixedly connected to the slide plate and the gear.

[0013] Preferably, a first spring rod is fixedly mounted on the surface of the skateboard, a U-shaped moving plate is fixedly mounted on one end of the first spring rod, rack rods are symmetrically fixedly mounted on the surface of the moving plate, and the two rack rods are respectively meshed and connected with two gears.

[0014] Preferably, a slide groove is horizontally opened on the upper surface of the fixed plate, a telescopic rod is slidably installed in the slide groove, and a cleaning plate is fixedly installed on the top end of the telescopic rod through a connecting rod.

[0015] Preferably, a plurality of water troughs are provided on the upper surface of the cleaning plate, cleaning liquid is provided in the water troughs, a piston plate is installed with a sliding seal in the water trough, a water outlet connected to the outside is provided at the bottom of the water trough, a straight rod is fixedly installed on the upper surface of the piston plate, a plurality of rectangular plates are fixedly installed on the top ends of the straight rods, a placement plate is fixedly installed on the side wall of the cleaning plate, a plurality of second spring rods are fixedly installed on the upper surface of the placement plate, and the top ends of the plurality of second spring rods are fixedly connected to the lower surface of the rectangular plate.

[0016] The method of the positioning control device for the double shear plate node welding of heavy-load box-type steel structure, the steps of which are: first, the shear plate to be welded is placed on the upper surface of the table body and is located between the two first positioning plates, and then one side of the shear plate is controlled to be tightly against the surface of the fixed plate, and the welding node of the shear plate is located at a suitable welding position, and then the first threaded rod is rotated, and the first positioning plate threadedly sleeved on the first threaded rod will move horizontally until the two first positioning plates are tightly against the shear plates, and then the second threaded rod is rotated, and the second positioning plate threadedly sleeved on the second threaded rod will move horizontally until the two second positioning plates are tightly against the shear plates. At this time, the shear plate will be positioned in the auxiliary positioning space composed of the fixed plate, the two first positioning plates and the two second positioning plates, without manual support, which improves the stability of the positioned shear plate, and also ensures the accuracy of the processed double shear plate node structure, and can assist in positioning shear plates of different sizes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the cooperation among the fixing plate, the first threaded rod, the first positioning plate, the second threaded rod and the second positioning plate, the shearing plate can be quickly assisted in positioning without manual support, thereby improving the stability of the positioned shearing plate and ensuring the accuracy of the processed double shearing plate node structure. In addition, shearing plates of different sizes can be assisted in positioning, which is highly practical.

[0019] 2. The first positioning plate and the second positioning plate can position the shearing plate horizontally, and the adsorption component can position the shearing plate vertically to prevent it from moving in the vertical direction. When the first positioning plate and the second positioning plate accidentally release the positioning of the shearing plate, the shearing plate will still be in a positioned state under the action of the adsorption component and will not move horizontally.

[0020] 3. After the shear plate is assisted in positioning, the telescopic rod can be controlled to move the cleaning plate back and forth horizontally. During the movement of the cleaning plate, the dust or impurities on the surface of the shear plate can be removed to prevent dust or impurities from affecting the quality of node welding;

[0021] 4. When the cleaning plate is moving back and forth horizontally, it can control multiple piston plates to move vertically, so that the cleaning liquid in multiple water tanks is sprayed out from multiple water outlets respectively and acts on the surface of the shear plate, thereby improving the effect of removing dust and impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front perspective structural diagram of the positioning control device for double shear plate node welding of heavy-duty box-type steel structure proposed by the present invention;

[0023] Figure 2 It is a top view of the three-dimensional structure schematic diagram of the positioning control device for double shear plate node welding of heavy-duty box-type steel structure proposed by the present invention;

[0024] Figure 3 It is a side perspective structural diagram of the positioning control device for double shear plate node welding of heavy-duty box-type steel structure proposed by the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the adsorption component in the positioning control device for double shear plate node welding of heavy-duty box-type steel structure proposed by the present invention;

[0026] Figure 5 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the telescopic rod and the cleaning plate in the positioning control device for double shear plate node welding of a heavy-duty box-type steel structure proposed by the present invention;

[0027] Figure 6 for Figure 1 The enlarged structural diagram at A in the middle;

[0028] Figure 7 for Figure 2 The enlarged structural diagram at B in the middle;

[0029] Figure 8 for Figure 4 The enlarged structural diagram at C in the middle;

[0030] Fig. 9 for Figure 5 Enlarged structural diagram at D in the middle.

[0031] In the figure: 1 body, 2 welding robot arm, 3 fixing plate, 4 first mounting opening, 5 first threaded rod, 6 first positioning plate, 7 second mounting opening, 8 second threaded rod, 9 second positioning plate, 10 adjusting wheel, 11 mounting groove, 12 through opening, 13 slide plate, 14 hollow cylinder, 15 suction cup, 16 third threaded rod, 17 rotating shaft, 18 blocking plate, 19 vent, 20 gear, 21 limiting rod, 22 torsion spring, 23 first spring rod, 24 moving plate, 25 rack rod, 26 slide groove, 27 telescopic rod, 28 connecting rod, 29 cleaning plate, 30 water tank, 31 piston plate, 32 water through opening, 33 straight rod, 34 rectangular plate, 35 second spring rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-Figure 9The positioning control device for double shear plate node welding of heavy-load box-type steel structure includes a platform 1, a welding robot arm 2 is fixedly installed on the back of the platform 1, a fixing plate 3 is horizontally fixedly installed on the upper surface of the platform 1, a first installation opening 4 is symmetrically and horizontally opened on the surface of the fixing plate 3, a first threaded rod 5 is horizontally rotatably installed in the first installation opening 4, and a first positioning plate 6 is threadedly sleeved on the first threaded rod 5.

[0034] A second mounting opening 7 is horizontally opened on the surface of the first positioning plate 6, a second threaded rod 8 is horizontally rotatably mounted in the second mounting opening 7, a second positioning plate 9 is threadedly sleeved on the second threaded rod 8, ends of the first threaded rod 5 and the second threaded rod 8 pass through the fixing plate 3 and the first positioning plate 6 respectively, and both are fixedly sleeved with an adjusting wheel 10.

[0035] First, place the shear plate to be welded on the upper surface of the table 1 and make it located between the two first positioning plates 6. Then, control one side of the shear plate to be tightly against the surface of the fixed plate 3, and make the welding node of the shear plate be located at a suitable welding position. At this time, rotate the first threaded rod 5, and the first positioning plate 6 threadedly sleeved on the first threaded rod 5 will move horizontally until the two first positioning plates 6 are tightly against the shear plates. Then, by rotating the second threaded rod 8, the second positioning plate 9 threadedly sleeved on the second threaded rod 8 will move horizontally until the two second positioning plates 9 are tightly against the shear plates. At this time, the shear plate will be positioned in the auxiliary positioning space composed of the fixed plate 3, the two first positioning plates 6 and the two second positioning plates 9. No manual support is required, which improves the stability of the positioned shear plate. At the same time, it also ensures the accuracy of the processed double shear plate node structure, and can perform auxiliary positioning on shear plates of different sizes, which is more practical.

[0036] The surface of the platform 1 is provided with a mounting groove 11, and a through-port 12 connected to the mounting groove 11 is symmetrically and vertically provided on the upper surface of the platform 1. An adsorption component for adsorbing the shear plate is provided in the mounting groove 11, and the adsorption component includes a T-shaped slide plate 13, two hollow cylinders 14 symmetrically and vertically fixedly installed on the upper surface of the slide plate 13, and two suction cups 15 respectively fixedly installed on the top of the two hollow cylinders 14. The two hollow cylinders 14 are respectively located in the two through-ports 12, and the lower surface of the slide plate 13 is symmetrically provided with a rotating port respectively connected to the inside of the two hollow cylinders 14. A desorption component is provided in the rotating port, and the desorption component is used to release the adsorption of the suction cup 15. The desorption component includes a rotating shaft 17 and a blocking plate 18, and the rotating shaft 17 is sealed and rotatably installed in the rotating port, and One end located in the hollow cylinder 14 is fixedly connected to the surface of the sealing plate 18 through a connecting rod. A vent 19 is opened on the surface of the hollow cylinder 14, and the sealing plate 18 is used to cover the vent 19. A gear 20 is fixedly installed at the end of the rotating shaft 17 located outside. The gear 20 is connected to the slide plate 13 through an elastic component. The elastic component includes a torsion spring 22 sleeved on the rotating shaft 17, and the two ends of the torsion spring 22 are respectively fixedly connected to the slide plate 13 and the gear 20. A third threaded rod 16 is vertically rotatably installed in the mounting groove 11. The slide plate 13 is threadedly sleeved on the third threaded rod 16 and is restricted in rotation by a limiting component. The limiting component includes a limiting rod 21 vertically fixedly installed in the mounting groove 11, and the slide plate 13 is slidably sleeved on the limiting rod 21.

[0037] When the shearing plate is positioned by the first positioning plate 6 and the second positioning plate 9, the third threaded rod 16 can be rotated, and the slide plate 13 threadedly sleeved on the third threaded rod 16 will move vertically with the two hollow cylinders 14 under the limiting action of the limiting rod 21 until the suction cup 15 located at the top of the hollow cylinder 14 is tightly against the lower surface of the shearing plate, and the suction cup 15 will be deformed by the pressing force, and the gas located in the suction cup 15 will slip out from the gap between the suction cup 15 and the contact surface of the shearing plate, thereby completing the adsorption of the shearing plate, the first positioning plate 6 and the second positioning plate 9 can position the shearing plate laterally, and the two suction cups 15 can position the shearing plate vertically after being adsorbed by the shearing plate to prevent it from moving in the vertical direction, and when the first positioning plate 6 and the second positioning plate 9 accidentally release the positioning of the shearing plate, under the adsorption action of the suction cup 15, the shearing plate will still be in a positioned state and will not move laterally.

[0038] When it is necessary to release the adsorption of the suction cup 15, it is only necessary to rotate the gear 20 to control the rotating shaft 17 to rotate with the sealing plate 18 until the sealing plate 18 rotates to no longer cover the vent 19. At this time, the gas in the outside will enter the hollow cylinder 14 from the vent 19, thereby releasing the adsorption of the suction cup 15, which is convenient and quick. After releasing the gear 20, the gear 20, the rotating shaft 17 and the sealing plate 18 will quickly rotate and reset under the elastic potential energy of the torsion spring 22, and the sealing plate 18 will cover the vent 19 again.

[0039] A first spring rod 23 is fixedly mounted on the surface of the slide plate 13 , a U-shaped moving plate 24 is fixedly mounted on one end of the first spring rod 23 , rack rods 25 are symmetrically fixedly mounted on the surface of the moving plate 24 , and the two rack rods 25 are meshed and connected with the two gears 20 respectively.

[0040] When it is necessary to release the adsorption of the suction cup 15, just push the movable plate 24 towards the direction close to the slide plate 13. At this time, the two rack rods 25 will move together, and the two gears 20 respectively meshing with the two rack rods 25 will rotate, so that the two blocking plates 18 can be controlled to rotate together, that is, the adsorption of the two suction cups 15 can be released at the same time without releasing them one by one.

[0041] A slide groove 26 is horizontally provided on the upper surface of the fixed plate 3, and a telescopic rod 27 is slidably installed in the slide groove 26. A cleaning plate 29 is fixedly installed on the top of the telescopic rod 27 through a connecting rod 28. A plurality of water tanks 30 are provided on the upper surface of the cleaning plate 29, and a cleaning liquid is provided in the water tank 30. A piston plate 31 is slidably and sealably installed in the water tank 30, and a water port 32 connected to the outside is provided at the bottom of the water tank 30. A straight rod 33 is fixedly installed on the upper surface of the piston plate 31, and a rectangular plate 34 is fixedly installed on the top of the plurality of straight rods 33. A placement plate is fixedly installed on the side wall of the cleaning plate 29, and a plurality of second spring rods 35 are fixedly installed on the upper surface of the placement plate, and the tops of the plurality of second spring rods 35 are fixedly connected to the lower surface of the rectangular plate 34.

[0042] A water inlet is provided on the surface of the piston plate 31, and a cover is provided inside the water inlet. The cover of the water inlet can be opened to add cleaning liquid into the water tank 30. A pressure one-way valve is provided in the water outlet 32, and the conduction direction of the pressure one-way valve is from the water tank 30 to the outside.

[0043] When the shearing plate is fixed, the lower surface of the cleaning plate 29 will contact the upper surface of the shearing plate, and then the cleaning plate 29 will be controlled to move back and forth horizontally, so that the cleaning plate 29 can remove dust or impurities on the surface of the shearing plate to prevent dust or impurities from affecting the quality of node welding.

[0044] At the same time, when the cleaning plate 29 is moving back and forth laterally, the rectangular plate 34 can be controlled to move downward. At this time, the multiple second spring rods 35 will shrink, and the multiple piston plates 31 will move downward in the multiple water tanks 30 respectively. The space between the lower surface of the piston plate 31 and the bottom of the water tank 30 will become smaller, and the pressure will increase. The cleaning liquid in the water tank 30 will be discharged from the water port 32 and act on the surface of the shearing plate, which can improve the effect of the cleaning plate 29 in removing dust and impurities from the surface of the shearing plate.

[0045] In the present invention, the shearing plate to be welded is first placed on the upper surface of the table body 1 and is located between the two first positioning plates 6. Then, one side of the shearing plate is controlled to be tightly against the surface of the fixed plate 3, and the welding node of the shearing plate is located at a suitable welding position. At this time, the first threaded rod 5 is rotated, and the first positioning plate 6 threadedly sleeved on the first threaded rod 5 will move horizontally until the two first positioning plates 6 are tightly against the shearing plates. Then, by rotating the second threaded rod 8, the second positioning plate 9 threadedly sleeved on the second threaded rod 8 will move horizontally until the two second positioning plates 9 are tightly against the shearing plates. At this time, the shearing plate will be positioned in the auxiliary positioning space composed of the fixed plate 3, the two first positioning plates 6 and the two second positioning plates 9. No manual support is required, which improves the stability of the positioned shearing plate. At the same time, it also ensures the accuracy of the processed double shearing plate node structure, and can perform auxiliary positioning on shearing plates of different sizes, which is highly practical.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning control device for welding double shear plate nodes of heavy-duty box-type steel structures, comprising a platform (1), characterized in that: A welding robot arm (2) is fixedly mounted on the back of the platform (1); a fixing plate (3) is horizontally fixedly mounted on the upper surface of the platform (1); a first mounting opening (4) is symmetrically and horizontally opened on the surface of the fixing plate (3); a first threaded rod (5) is horizontally and rotatably mounted in the first mounting opening (4); a first positioning plate (6) is threadedly sleeved on the first threaded rod (5); A second mounting opening (7) is horizontally opened on the surface of the first positioning plate (6), a second threaded rod (8) is horizontally rotatably mounted in the second mounting opening (7), a second positioning plate (9) is threadedly sleeved on the second threaded rod (8), the ends of the first threaded rod (5) and the second threaded rod (8) respectively pass through the fixing plate (3) and the first positioning plate (6), and are both fixedly sleeved with an adjusting wheel (10).

2. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 1 is characterized in that: The surface of the platform (1) is provided with a mounting groove (11), the upper surface of the platform (1) is symmetrically and vertically provided with a through opening (12) connected to the mounting groove (11), and an adsorption component for adsorbing the shear plate is arranged in the mounting groove (11).

3. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 2 is characterized in that: The adsorption assembly comprises a T-shaped slide plate (13), two hollow cylinders (14) symmetrically and vertically fixedly mounted on the upper surface of the slide plate (13), and two suction cups (15) respectively fixedly mounted on the top ends of the two hollow cylinders (14); the two hollow cylinders (14) are respectively located in two through openings (12); the lower surface of the slide plate (13) is symmetrically provided with rotating openings respectively connected to the two hollow cylinders (14); a desorption component is arranged in the rotating opening, and the desorption component is used to release the adsorption of the suction cup (15); a third threaded rod (16) is vertically and rotatably mounted in the mounting groove (11); the slide plate (13) is threadedly sleeved on the third threaded rod (16), and the rotation is restricted by a restricting component.

4. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 3 is characterized in that: The desorption component comprises a rotating shaft (17) and a sealing plate (18); the rotating shaft (17) is sealed and rotatably mounted in the rotating port, and one end of the rotating shaft (17) located in the hollow cylinder (14) is fixedly connected to the surface of the sealing plate (18) via a connecting rod; a vent (19) is provided on the surface of the hollow cylinder (14); the sealing plate (18) is used to cover the vent (19); a gear (20) is fixedly mounted on the end of the rotating shaft (17) located outside; the gear (20) is connected to the slide plate (13) via an elastic component.

5. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 4 is characterized in that: The limiting component comprises a limiting rod (21) vertically fixedly installed in the installation groove (11), and the sliding plate (13) is slidably sleeved on the limiting rod (21).

6. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 5 is characterized in that: The elastic component comprises a torsion spring (22) sleeved on the rotating shaft (17), and two ends of the torsion spring (22) are respectively fixedly connected to the slide plate (13) and the gear (20).

7. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 6 is characterized in that: A first spring rod (23) is fixedly mounted on the surface of the slide plate (13); a U-shaped moving plate (24) is fixedly mounted on one end of the first spring rod (23); rack rods (25) are symmetrically fixedly mounted on the surface of the moving plate (24); and the two rack rods (25) are respectively meshed and connected with two gears (20).

8. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 7 is characterized in that: A sliding groove (26) is horizontally provided on the upper surface of the fixing plate (3), a telescopic rod (27) is slidably installed in the sliding groove (26), and a cleaning plate (29) is fixedly installed on the top end of the telescopic rod (27) via a connecting rod (28).

9. The positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 8 is characterized in that: The cleaning plate (29) is provided with a plurality of water troughs (30) on the upper surface thereof, wherein cleaning liquid is provided in the water troughs (30), a piston plate (31) is slidably sealed and installed in the water troughs (30), a water inlet (32) communicating with the outside is provided at the bottom of the water troughs (30), a straight rod (33) is fixedly installed on the upper surface of the piston plate (31), a rectangular plate (34) is fixedly installed on the top of a plurality of the straight rods (33), a placement plate is fixedly installed on the side wall of the cleaning plate (29), a plurality of second spring rods (35) are fixedly installed on the upper surface of the placement plate, and the tops of the plurality of the second spring rods (35) are fixedly connected to the lower surface of the rectangular plate (34).

10. The method for positioning control device for double shear plate node welding of heavy-duty box-type steel structure according to claim 9 is characterized in that: The steps are as follows: firstly, the shear plate to be welded is placed on the upper surface of the platform (1) and is located between the two first positioning plates (6); then, one side of the shear plate is controlled to be tightly against the surface of the fixed plate (3); and the welding node of the shear plate is located at a suitable welding position; then, the first threaded rod (5) is rotated, and the first positioning plate (6) threadedly sleeved on the first threaded rod (5) will move horizontally until the two first positioning plates (6) are tightly against the shear plate; then, by rotating the second threaded rod (8), the second positioning plate (9) threadedly sleeved on the second threaded rod (8) will move horizontally until the two second positioning plates (9) are tightly against the shear plate; at this time, the shear plate will be positioned in the auxiliary positioning space formed by the fixed plate (3), the two first positioning plates (6) and the two second positioning plates (9); no manual support is required, thereby improving the stability of the positioned shear plate and ensuring the accuracy of the processed double shear plate node structure; and shear plates of different sizes can be auxiliary positioned.

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