Steel lattice beam submerged-arc welding jig frame device

Abstract

The invention belongs to the technical field of welding auxiliary equipment, and discloses a steel lattice beam submerged-arc welding jig frame device which comprises a bottom plate. A pair of symmetrically-arranged supporting plates is fixed to the bottom plate, and a horizontally-arranged rotating shaft is fixed between the two supporting plates. A square shaft is arranged above the two supporting plates, the central axis of the square shaft is perpendicular to the central axis of the rotating shaft, the two ends of the direction pipe are symmetrically arranged relative to the rotating shaft, the lower end face of the square shaft is fixedly connected with a hinge piece, the lower end of the hinge piece is rotationally arranged on the rotating shaft in a sleeving mode, and when the square shaft is horizontally arranged, the upper end face of the square shaft is parallel to the bottom plate. Supporting legs are fixed at two ends of the square shaft; the cross beam can be inclined by 45 degrees conveniently, the opening end of the included angle between the upper end face of the web and the wing plate located below the web is vertically placed upwards, enough space is reserved over the included angle between the web and the wing plate, a submerged-arc welding gun can directly face a splicing seam to conduct welding conveniently during welding, and therefore the welding quality and the construction efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding auxiliary equipment, and in particular relates to a submerged arc welding frame device for a steel lattice beam. Background Art

[0002] As an important bridge structure, steel tube concrete arch bridge is widely used in the construction of large-span bridges. The bridge is mainly composed of arch ribs and steel lattice beams, among which the steel lattice beams mainly use cross beams as the main supporting structure of the bridge deck system. The structural feature of the steel lattice beam is that the cross beam is composed of a web and two wing plates, among which the two vertically placed wing plates are installed at both ends of the horizontally placed web by clipping. After splicing and assembly, these components form an I-shaped cross beam. This design can provide strong support and good load distribution capabilities.

[0003] During the manufacturing process of steel lattice beams, the joint seams between the web and the wing plates need to be submerged arc welded to ensure the strength and stability of the connection; however, due to the 90° angle between the web and the wing plates, the space at the angle is not convenient for direct welding with a welding gun, which increases the difficulty of the welding operation and may lead to welding quality problems, affecting the overall performance and durability of the structure; therefore, there is a problem in the prior art that it is not convenient to use a submerged arc welding gun to weld the joint seams at the angle between the web and the wing plates. Summary of the invention

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a steel lattice beam submerged arc welding frame device, which solves the problem in the prior art that it is inconvenient to weld the joint seam at the angle between the web and the wing plate with a submerged arc welding gun.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A steel lattice beam submerged arc welding frame device comprises a bottom plate;

[0007] A pair of symmetrically placed support plates are fixed on the bottom plate, and a horizontally placed rotating shaft is fixed between the two support plates;

[0008] A square shaft is provided above the two support plates, the central axis of the square shaft is placed vertically to the central axis of the rotating shaft, and the two ends of the direction tube are placed symmetrically about the rotating shaft, the lower end surface of the square shaft is fixedly connected with a hinge, and the lower end of the hinge is rotatably sleeved on the rotating shaft, when the square shaft is placed horizontally, the upper end surface of the square shaft is parallel to the bottom plate;

[0009] Support feet are fixed at both ends of the square shaft. When the square shaft is tilted toward any end until the support foot at that end contacts the bottom plate, the angle between the upper end surface of the direction tube and the bottom plate is 45°.

[0010] The upper end of the square shaft is provided with a slide groove coaxially arranged therewith, and the two ends of the slide groove are symmetrically arranged about the rotating shaft, and the slide groove is rotatably connected to a first screw rod coaxially arranged therewith, and a pair of symmetrically arranged slide plates are provided above the square shaft along its axial direction, and the plate surface of the slide plate is vertically placed with the slide groove, and the lower ends of the slide plates are extended into the slide groove and slidably engaged with the slide groove, and the lower ends of the slide plates are sleeved on the first screw rod and threadedly connected therewith, and any slide plate is located at a position of the slide groove close to the rotating shaft, and the other slide plate is located at a position of either end of the slide groove, and a driving part for driving the first screw rod to rotate is provided on the square shaft;

[0011] Baffles are fixed at both ends of the upper end surface of the square shaft, and the two slide plates are located between the two baffles;

[0012] The upper end surface of the square shaft is provided with two slide grooves placed in parallel, and the first screw rods are rotatably connected in the two slide grooves, and the lower ends of the slide plates are extended into the two slide grooves for sliding engagement, and the two first screw rods pass through the slide plates and are threadedly connected thereto;

[0013] The driving part includes two gears arranged at one end of the square shaft, the first screw rods near the gear ends pass through the wall of the slide groove and extend to the outside of the square shaft, the first screw rods are rotatably connected with the square shaft, the two gears are respectively fixedly sleeved on the two first screw rods, an annular synchronous belt is sleeved between the two gears, a rotating motor is installed at the other end of the square shaft, and the output end of the rotating motor is connected to any first screw rod and is used to drive it to rotate;

[0014] A coaxially placed disc is fixed to one end of the gear away from the square shaft, the diameter of the disc is larger than the diameter of the gear, and the annular toothed belt is located between the disc and the square shaft;

[0015] A circular through hole coaxially arranged with the rotating shaft is provided on both support plates, and the diameter of the circular through hole is equal to the diameter of the rotating shaft. Both ends of the rotating shaft are respectively located in the circular through holes of the support plates on both sides. A fixed disk having a diameter larger than the circular through hole is fixed to one end of the rotating shaft, and a second screw coaxially arranged is fixed to the other end of the rotating shaft, and the maximum diameter of the second screw is smaller than the diameter of the rotating shaft. A nut connected by a thread is sleeved on the second screw, and the circumscribed circle diameter of the nut is larger than the diameter of the circular through hole. The two support plates are located between the fixed disk and the nut.

[0016] The upper and lower peripheral walls of the round through hole are both fixed with clamping grooves, the clamping grooves run through both sides of the support plate, and the upper and lower peripheral walls of both ends of the rotating shaft are both fixed with clamping blocks matched with the clamping grooves.

[0017] Beneficial effects of the present invention:

[0018] 1. After the crossbeam is placed between the two slides above the square shaft in a coaxial state with the rotating shaft, the end of the square shaft close to the crossbeam tilts downward under the action of gravity, so that the support foot close to the crossbeam end of the square shaft contacts the bottom plate. At this time, the upper end face of the square shaft forms a 45° angle with the bottom plate, that is, the open end of the angle between the upper end face of the web plate and the wing plate at the bottom is placed vertically upward, so that enough space is left directly above the angle between the web plate and the wing plate, so that the submerged arc welding gun can weld the joint seam directly during welding, thereby improving the welding quality and construction efficiency;

[0019] When the welding of the joint seam between one end of the upper end surface of the web and the corresponding side wing plate is completed, the driving part is turned on, the driving part drives the first screw to rotate, and the first screw drives the two slides to perform thread transmission, so that the slide at the bottom at this time pushes the other end of the square shaft of the cross beam box to move, thereby realizing the alternating change of the state of the cross beam being tilted or sunk near the two wing plate ends, thereby facilitating the purpose of welding the joint seam at the angle between the upper end surface of the web and the two side wing plates in the cross beam;

[0020] Moreover, the present application can drive the crossbeam placed thereon to move up and down along the axis direction of the square shaft by two slide plates while keeping the inclination direction of the square shaft different, so as to facilitate the adjustment of the position height of the splicing seam at the required welding location;

[0021] 2. By setting up two first screws, in conjunction with gears, annular synchronous belts and a rotating motor, the two first screws can be driven to rotate synchronously and in the same direction, which can increase the thrust and torque output, so that the skateboard has a greater driving force, which is convenient for pushing the crossbeam to move; and compared with the setting of a single threaded rod, the setting of two threaded rods can distribute the force of the thread teeth on the first screw when the skateboard is subjected to external force, which helps to reduce the risk of breakage caused by excessive force on a single threaded rod and increase the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention from different viewing angles;

[0025] Figure 3 It is a partial structural schematic diagram of the first screw of the present invention;

[0026] Figure 4It is a schematic diagram of the structure of the gear part of the present invention;

[0027] Figure 5 It is a partial structural schematic diagram of the hinge of the present invention;

[0028] Figure 6 It is a partial structural schematic diagram of the rotating shaft of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the circular through hole of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, a steel lattice beam submerged arc welding frame device comprises a bottom plate 100;

[0032] A pair of symmetrically placed support plates 200 are fixed on the bottom plate 100, and a horizontally placed rotating shaft 300 is fixed between the two support plates 200;

[0033] A square shaft 400 is provided above the two support plates 200. The central axis of the square shaft 400 is placed vertically with the central axis of the rotating shaft 300, and the two ends of the direction tube are placed symmetrically with respect to the rotating shaft 300. The lower end surface of the square shaft 400 is fixedly connected with a hinge 500. The lower end of the hinge 500 is rotatably sleeved on the rotating shaft 300. When the square shaft 400 is placed horizontally, the upper end surface of the square shaft 400 is parallel to the bottom plate 100.

[0034] Support feet 600 are fixed at both ends of the square shaft 400. When the square shaft 400 is tilted toward any end until the support foot 600 at that end contacts the bottom plate 100, the angle between the upper end surface of the direction tube and the bottom plate 100 is 45°.

[0035] The upper end of the square shaft 400 is provided with a slide groove 401 placed coaxially therewith, and the two ends of the slide groove 401 are symmetrically placed about the rotating shaft 300. The slide groove 401 is rotatably connected to a first screw rod 402 placed coaxially therewith. A pair of symmetrically arranged slide plates 403 are provided above the square shaft 400 along its axial direction. The plate surface of the slide plate 403 is placed vertically to the slide groove 401. The lower ends of the slide plates 403 are extended into the slide groove 401 and slidably engaged therewith. The lower ends of the slide plates 403 are sleeved on the first screw rod 402 and threadedly connected therewith, and any slide plate 403 is located at a position of the slide groove 401 close to the rotating shaft 300, and the other slide plate 403 is located at a position of either end of the slide groove 401. A driving part for driving the first screw rod 402 to rotate is provided on the square shaft 400;

[0036] The crossbeam to be submerged arc welded in the present application includes a web and two wing plates, the two wing plates are clamped and installed at both ends of the web, and an I-shaped crossbeam is formed by splicing and assembling a web and two wing plates. Submerged arc welding is required at the splicing seam at the 90° angle between the web and the wing plate;

[0037] The crossbeam is placed between the two slide plates 403 above the square shaft 400 in a coaxial state with the rotating shaft 300, and the web is placed parallel to the upper end surface of the square shaft 400;

[0038] After the crossbeam is placed on the square shaft 400 of the present application, under the action of gravity, the end of the square shaft 400 close to the crossbeam tilts downward, so that the support foot 600 on the square shaft 400 close to the crossbeam end contacts the bottom plate 100. At this time, the upper end surface of the square shaft 400 forms a 45° angle with the bottom plate 100, and the wing plate on one side of the crossbeam fits with the slide plate 403 at the end of the slide groove 401 away from the rotating shaft 300 under the action of gravity, that is, at this time, the angles between the web plate, the wing plate and the bottom plate 100 are all 45°, and the open end of the angle between the upper end surface of the web plate and the wing plate at the bottom at this time is placed vertically upward, so that sufficient space is left directly above the angle between the web plate and the wing plate, which is convenient for the submerged arc welding gun to weld the joint seam directly during welding, thereby improving the welding quality and construction efficiency;

[0039] When the welding of the joint seam between one end of the upper end surface of the web and the corresponding side wing plate is completed, the driving part is turned on, and the driving part drives the first screw 402 to rotate, and the first screw 402 drives the two slide plates 403 to perform threaded transmission, so that the slide plate 403 in the middle section of the slide groove 401 moves toward the raised end of the square shaft 400, so that the slide plate 403 at the bottom at this time pushes the other end of the square shaft 400 of the beam box to move, and when the center of gravity of the beam passes the vertical plane where the rotating shaft 300 is located, under the action of gravity, the square shaft 400 tilts to the other end until the supporting foot 600 contacts the bottom plate 100; thereby, the state of the beam being tilted or sunk near the two wing plate ends is alternately changed, so as to facilitate the purpose of welding the joint seam at the angle between the upper end surface of the web plate in the beam and the two side wing plates;

[0040] When the slide plate 403 pushes the beam to move, when the central axis of the beam does not exceed the vertical plane where the rotating shaft 300 is located, the inclination direction of the square shaft 400 will not change. That is, the present application can drive the beam placed on it to move up and down along the axis direction of the square shaft 400 by two slide plates 403 while keeping the inclination direction of the square shaft 400 different, so as to facilitate the adjustment of the position height of the splicing seam at the required welding point.

[0041] If the crossbeam is long, multiple tire frame devices in the present application can be used simultaneously, and the multiple tire frame devices can be arranged along the axis direction of the crossbeam, and then the crossbeam can be placed on the multiple tire frame devices, and the longer crossbeam can be supported by the multiple tire frame devices.

[0042] Baffles 404 are fixed at both ends of the upper end surface of the square shaft 400, and the two slide plates 403 are located between the two baffles 404; when the square shaft 400 and the crossbeam are tilted, the slide plate 403 tilted toward the lower end can be fitted with the baffle 404 at the corresponding end of the square shaft 400, and the baffle 404 can provide a certain support to the slide plate 403 to prevent the slide plate 403 at the lower end from being crushed by the gravity of the crossbeam;

[0043] When the slide plate 403 pushes the cross beam to move toward the tilted end of the square shaft 400, if the slide plate 403 is accidentally broken, the baffle plate 404 can buffer and block the cross beam to prevent it from sliding directly to the ground.

[0044] When the gravity of the cross beam acts on the slide plate 403 at the inclined downward end, the force will be transmitted between the slide plate 403 and the first screw 402. In order to share the force on the thread teeth of the first screw 402 and avoid the thread teeth of the first screw 402 from breaking and prolonging its service life, the slide grooves 401 on the upper end surface of the square shaft 400 are arranged to be two parallel slide grooves, and the first screw 402 is rotatably connected in the two slide grooves 401. The lower ends of the slide plates 403 are extended into the two slide grooves 401 for sliding engagement. 402 all pass through the slide plate 403 and are threadedly connected thereto; driving the two first screw rods 402 to rotate synchronously and in the same direction can increase the thrust and torque output, so that the slide plate 403 has a greater driving force, which is convenient for pushing the crossbeam to move; and compared with the setting of a single threaded rod, the setting of two threaded rods can distribute the force of the thread teeth on the first screw rod 402 when the slide plate 403 is subjected to external force, which helps to reduce the risk of a single threaded rod being broken due to excessive force, and increase the stability and reliability of the system.

[0045] In order to facilitate the driving of the two first screw rods 402 to rotate synchronously and in the same direction, the driving part includes two gears 405 arranged at one end of the square shaft 400, and the first screw rod 402 close to the gear 405 end passes through the groove wall of the slide groove 401 and extends to the outside of the square shaft 400, and the first screw rod 402 is rotatably connected to the square shaft 400, and the two gears 405 are respectively fixedly sleeved on the two first screw rods 402, and an annular synchronous toothed belt 406 is sleeved between the two gears 405. A rotating motor 407 is installed at the other end of the square shaft 400, and the output end of the rotating motor 407 is connected to any first screw rod 402 and is used to drive it to rotate; by turning on the rotating motor 407, the first screw rod 402 connected thereto is driven, and the first screw rod 402 drives the gear 405 and the annular synchronous toothed belt 406, so that the two first screw rods 402 keep rotating synchronously and in the same direction.

[0046] In order to prevent the annular synchronous toothed belt 406 from being separated from the gear 405 during rotation, a coaxially placed disc 4051 is fixed to the end of the gear 405 away from the square shaft 400. The diameter of the disc 4051 is larger than the diameter of the gear 405, and the annular toothed belt is located between the disc 4051 and the square shaft 400; this can prevent the annular synchronous toothed belt 406 from being separated from the gear 405 during rotation.

[0047] Since the rotating shaft 300 needs to bear the weight of the entire square shaft 400 and the supported steel beam, and the square shaft 400 drives the hinge 500 to continuously rub against the rotating shaft 300, the rotating shaft 300 is easily damaged and needs to be replaced. In order to facilitate the replacement of the rotating shaft 300, a round through hole 201 coaxially arranged with the rotating shaft 300 is opened on the two supporting plates 200. The diameter of the round through hole 201 is equal to the diameter of the rotating shaft 300. The two ends of the rotating shaft 300 are respectively located in the round through holes 201 of the supporting plates 200 on both sides. A fixing plate 301 with a diameter larger than the round through hole 201 is fixed at either end of the rotating shaft 300. A second screw rod 302 is fixed on the other end thereof and is coaxially arranged. The maximum diameter of the second screw rod 302 is smaller than the diameter of the rotating shaft 300. A nut 303 is sleeved on the second screw rod 302 and is threadedly connected. The diameter of the circumscribed circle of the nut 303 is larger than the diameter of the round through hole 201. The two supporting plates 200 are located between the fixing plate 301 and the nut 303. By tightening the nut 303, the nut 303 and the fixing plate 301 are respectively fitted on the two supporting plates 200, and the rotating shaft 300 can be fastened between the two supporting plates 200. When the rotating shaft 300 needs to be replaced, the rotating shaft 300 can be pulled out for replacement after the nut 303 is unscrewed.

[0048] When the hinge 500 rotates, in order to prevent the hinge 500 from driving the rotating shaft 300 to rotate and causing the nut 303 to loosen, a clamping groove 202 is fixed on the upper and lower ends of the circular hole 201. The clamping groove 202 runs through both sides of the support plate 200, and a clamping block 304 adapted to the clamping groove 202 is fixed on the upper and lower ends of the rotating shaft 300. This can prevent the rotating shaft 300 from rotating and causing the nut 303 to loosen, and through the matching setting of the clamping groove 202 and the clamping block 304, the rotating shaft 300 is prevented from rotating and causing slipping during the screwing of the nut 303, so that the screwing of the nut 303 is facilitated.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A steel lattice beam submerged arc welding frame device, comprising a bottom plate (100), characterized in that: A pair of symmetrically placed support plates (200) are fixed on the bottom plate (100), and a horizontally placed rotating shaft (300) is fixed between the two support plates (200); A square shaft (400) is provided above the two support plates (200), the central axis of the square shaft (400) is placed vertically to the central axis of the rotating shaft (300), and the two ends of the direction tube are placed symmetrically about the rotating shaft (300), the lower end surface of the square shaft (400) is fixedly connected to a hinge (500), the lower end of the hinge (500) is rotatably sleeved on the rotating shaft (300), and when the square shaft (400) is placed horizontally, the upper end surface of the square shaft (400) is parallel to the bottom plate (100); Support feet (600) are fixed at both ends of the square shaft (400). When the square shaft (400) is tilted toward either end until the support foot (600) at that end contacts the bottom plate (100), the angle between the upper end surface of the direction tube and the bottom plate (100) is 45°. The upper end of the square shaft (400) is provided with a slide groove (401) placed coaxially therewith, and the two ends of the slide groove (401) are symmetrically placed about the rotating shaft (300). The slide groove (401) is rotatably connected to a first screw rod (402) placed coaxially therewith. A pair of symmetrically arranged slide plates (403) are provided above the square shaft (400) along its axial direction. The plate surface of the slide plate (403) is placed vertically to the slide groove (401), and the lower end of the slide plate (403) extends into the slide groove (401) and is slidably engaged with the slide groove (401). The lower end of the slide plate (403) is sleeved on the first screw rod (402) and is threadedly connected thereto, and any slide plate (403) is located at a position of the slide groove (401) close to the rotating shaft (300), and the other slide plate (403) is located at a position of either end of the slide groove (401). A driving part for driving the first screw rod (402) to rotate is provided on the square shaft (400).

2. The submerged arc welding frame device for steel lattice beams according to claim 1, characterized in that: Baffles (404) are fixed to both ends of the upper end surface of the square shaft (400), and the two slide plates (403) are located between the two baffles (404).

3. The submerged arc welding frame device for steel lattice beams according to claim 2, characterized in that: The upper end surface of the square shaft (400) is provided with two slide grooves (401) placed in parallel, and the first screw rods (402) are rotatably connected in the two slide grooves (401), and the lower ends of the slide plates (403) are extended into the two slide grooves (401) for sliding engagement, and the two first screw rods (402) pass through the slide plates (403) and are threadedly connected thereto.

4. The submerged arc welding frame device for steel lattice beams according to claim 3 is characterized in that: The driving part comprises two gears (405) arranged at one end of the square shaft (400); the first screw rod (402) near the gear (405) end passes through the groove wall of the slide groove (401) and extends to the outside of the square shaft (400); the first screw rod (402) is rotationally connected to the square shaft (400); the two gears (405) are respectively fixedly sleeved on the two first screw rods (402); an annular synchronous toothed belt (406) is sleeved between the two gears (405); a rotating motor (407) is installed at the other end of the square shaft (400); the output end of the rotating motor (407) is connected to any first screw rod (402) and is used to drive it to rotate.

5. The submerged arc welding frame device for steel lattice beams according to claim 4, characterized in that: A coaxially arranged disc (4051) is fixed to one end of the gear (405) away from the square shaft (400); the diameter of the disc (4051) is larger than the diameter of the gear (405); and an annular toothed belt is located between the disc (4051) and the square shaft (400).

6. The submerged arc welding frame device for steel lattice beams according to claim 5, characterized in that: The two support plates (200) are each provided with a circular through hole (201) coaxially arranged with the rotating shaft (300), the diameter of the circular through hole (201) being equal to the diameter of the rotating shaft (300), the two ends of the rotating shaft (300) being respectively located in the circular through holes (201) of the support plates (200) on both sides, a fixing plate (301) having a diameter larger than the circular through hole (201) being fixed to one end of the rotating shaft (300), a second screw rod (302) coaxially arranged being fixed to the other end of the rotating shaft (300), the maximum diameter of the second screw rod (302) being smaller than the diameter of the rotating shaft (300), a nut (303) being threadedly connected being sleeved on the second screw rod (302), the circumscribed circle diameter of the nut (303) being larger than the diameter of the circular through hole (201), and the two support plates (200) being located between the fixing plate (301) and the nut (303).

7. The submerged arc welding frame device for steel lattice beams according to claim 6, characterized in that: A clamping groove (202) is fixed on the upper and lower peripheral walls of the circular through hole (201), the clamping groove (202) passes through both sides of the support plate (200), and a clamping block (304) adapted to the clamping groove (202) is fixed on the upper and lower peripheral walls of both ends of the rotating shaft (300).

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