Auxiliary device for assembling and welding steel truss girder of cable-stayed bridge

Abstract

The invention discloses a cable-stayed bridge steel truss girder assembling and welding auxiliary device, and relates to the technical field of steel truss girder assembling and welding, the cable-stayed bridge steel truss girder assembling and welding auxiliary device comprises a base, a fixing seat and a positioning seat, and further comprises two limiting pieces arranged above the positioning seat through an upper base plate, and each limiting piece comprises two inclined plates used for limiting a U-shaped rib below an upper bridge floor block body; the lower base plate is connected with the upper base plate through a clamping assembly and is arranged above the positioning seat; according to the auxiliary device for assembling and welding the steel truss girder of the cable-stayed bridge, after an upper bridge floor block body is supported by the supporting plate, the limiting pieces on the two sides are driven by the double-rod hydraulic cylinders to move in the opposite or opposite directions to be aligned with U-shaped ribs on the two most sides of the lower portion of the upper bridge floor block body, and then the jack drives the positioning base to move upwards; and during auxiliary supporting, the limiting piece limits the lower portion of the upper bridge deck block, the stability during assembling is improved, and the assembling and welding precision can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel truss girder assembly welding, in particular to an auxiliary device for assembly welding of steel truss girder of a cable-stayed bridge. Background Art

[0002] Cable-stayed bridge steel truss is a steel truss structure used in cable-stayed bridges. Cable-stayed bridges are mainly composed of towers, beams and cables, among which steel trusses are the main load-bearing structures, bearing the vertical load and horizontal thrust of the bridge. The steel truss structure is mainly composed of upper and lower chords, web members, bridge deck systems and other components. The assembly process is to connect the upper and lower chords with web members to form a truss structure, and the bridge deck system is connected with the transverse and longitudinal beams to form a block. In the process of welding the upper bridge deck block, the upper bridge deck block will produce downward deflection due to the influence of its own weight, so auxiliary devices are needed to support it during assembly and welding.

[0003] Reference patent application number CN202410340655.7 is an auxiliary device for assembling and welding steel trusses of a cable-stayed bridge. This prior art uses a hollow moving column and cooperates with a jack to lift it, so that the support plate and the support plate can provide auxiliary support for the upper bridge deck block. When the supporting force of the hollow moving column is insufficient, the supporting force of the hollow moving column can be supplemented, thereby ensuring that the upper bridge deck block will not bend and deform. Although the above patent can provide auxiliary support to the upper bridge deck block through the support plate and the support plate, it does not have a positioning function and cannot limit the upper bridge deck block after support. It is difficult to ensure stability during assembly and is not conducive to use. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an auxiliary device for assembling and welding steel trusses of a cable-stayed bridge, which solves the problem that the auxiliary device does not have a positioning function, cannot limit the upper bridge deck blocks after support, is difficult to ensure stability during assembly, and is not conducive to use.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an auxiliary device for assembling and welding steel trusses of a cable-stayed bridge, comprising a base, a fixing seat and a positioning seat, and also comprising: Two limiting members are arranged above the positioning seat through an upper pad, and the limiting members include two inclined plates for limiting the U-shaped ribs under the upper bridge deck block; The lower pad is connected to the upper pad via a clamping assembly and is arranged above the positioning seat; A driving assembly is arranged inside the positioning seat, and the driving assembly includes a double-rod hydraulic cylinder, both ends of which are fixedly connected to support blocks connected to the bottom of the lower pad; The extension mechanism is arranged inside the fixing seat and is used for adjusting the length of the fixing seat.

[0006] Preferably, the clamping assembly includes a fixing rod arranged at the bottom of the upper pad, cavities are opened on both sides inside the lower pad, and movable plates are fixedly connected to the front and rear sides of the inner wall of the cavity, a spring is fixedly connected between the two movable plates, and the two movable plates are fixedly connected to the opposite sides with a clamping rod.

[0007] Preferably, one side of each of the two movable plates is fixedly connected with a handle extending to the outside of the lower pad, and one end of the clamping rod passes through the fixed rod and extends to the inside of the lower pad.

[0008] Preferably, the extension mechanism includes a dual-axis motor, a fixing groove compatible with the dual-axis motor is opened in the middle of the fixing seat, and the first screw rod and the second screw rod are fixedly connected to the two ends of the dual-axis motor respectively, grooves are opened on both sides of the top of the fixing seat, and sliders are slidably arranged on the front and rear sides of the inner wall of the groove, an extension plate slidably connected to the bottom of the inner wall of the groove is fixedly connected between the two sliders, and a threaded groove is opened on one side of the extension plate.

[0009] Preferably, the tops of the two extension plates are fixedly connected with jacks, and the output ends of the jacks are fixedly connected to the bottom of the positioning seat.

[0010] Preferably, a through slot matched with the support block is formed on the top of the positioning seat, and a support plate is fixedly connected to the top of the fixing seat via a column.

[0011] Preferably, hydraulic push rods are fixedly connected to both sides of the top of the base, and the output ends of the hydraulic push rods are fixedly connected to the bottom of the fixed seat.

[0012] Preferably, electric push rods are fixedly connected to both sides of the top of the base, a cross plate is slidably arranged between both sides of the inner wall of the base, and walking wheels are fixedly connected to both sides of the bottom of the cross plate, and the output end of the electric push rod is fixedly connected to the top of the cross plate.

[0013] The present invention provides an auxiliary device for assembling and welding steel trusses of a cable-stayed bridge, which has the following beneficial effects: (1) The auxiliary device for assembling and welding steel trusses of the cable-stayed bridge is as follows: after the support plate supports the upper bridge deck block, the double-rod hydraulic cylinder drives the limit pieces on both sides to move in relative or opposite directions, aligning them with the U-shaped ribs on both sides of the lower part of the upper bridge deck block. Then, the jack drives the positioning seat to move upwards. While providing auxiliary support, the limit pieces limit the lower part of the upper bridge deck block, thereby improving the stability during assembly and facilitating the improvement of the assembly welding accuracy.

[0014] (2) The cable-stayed bridge steel truss welding auxiliary device limits the fixing rod under the upper pad through the clamping assembly. Conversely, the upper pad and the lower pad can be separated, which is convenient for replacing the limiting parts according to the width of the U-shaped rib under the upper bridge deck block, thereby increasing the applicable scope of positioning and making it more flexible to use.

[0015] (3) The cable-stayed bridge steel truss beam assembly welding auxiliary device drives the first screw and the second screw to rotate through a double-axis motor, and the thread directions of the first screw and the second screw are opposite, which can drive the extension plate to reciprocate in the groove, adjust the length of the device, and expand the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A; Figure 3 It is a schematic diagram of the installation of the handle structure of the present invention; Figure 4 It is a cross-sectional view of the clamping assembly structure of the present invention; Figure 5 It is a cross-sectional view of the positioning seat structure of the present invention; Figure 6 A top view of the internal structure of the fixing base of the present invention; Figure 7 It is a cross-sectional view of the base structure of the present invention.

[0017] In the figure: 1. base; 2. fixed seat; 3. positioning seat; 4. limiter; 401. inclined plate; 5. upper pad; 6. lower pad; 7. double-rod hydraulic cylinder; 8. support block; 9. extension mechanism; 91. double-axis motor; 92. fixed groove; 93. first screw rod; 94. second screw rod; 95. groove; 96. slider; 97. extension plate; 98. threaded groove; 10. fixed rod; 11. cavity; 12. movable plate; 13. spring; 14. clamping rod; 15. handle; 16. jack; 17. through groove; 18. column; 19. support plate; 20. hydraulic push rod; 21. electric push rod; 22. cross plate; 23. walking wheel. DETAILED DESCRIPTION

[0018] 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.

[0019] Embodiment 1 See also Figures 1 to 6 As shown, the present invention provides a cable-stayed bridge steel truss assembly welding auxiliary device, comprising a base 1, a fixing seat 2 and a positioning seat 3, both sides of the top of the base 1 are fixedly connected with hydraulic push rods 20, and the output end of the hydraulic push rod 20 is fixedly connected to the bottom of the fixing seat 2, which is used to adjust the height of the device so that the support plate 19 supports the upper bridge deck block, and also includes: Two stoppers 4 are arranged above the positioning seat 3 through the upper pad 5. The stoppers 4 include two inclined plates 401. The two inclined plates 401 are fixed on the top of the upper pad 5, and the two inclined plates 401 form a U-shaped structure, which is adapted to the U-shaped ribs under the upper bridge deck block and is used to limit the U-shaped ribs under the upper bridge deck block; The lower pad 6 is connected to the upper pad 5 through a clamping assembly and is arranged above the positioning seat 3; A driving assembly is arranged inside the positioning seat 3, and the driving assembly includes a double-rod hydraulic cylinder 7 fixed to the bottom of the inner wall of the positioning seat 3, and both ends of the double-rod hydraulic cylinder 7 are fixedly connected to a support block 8 connected to the bottom of the lower pad 6; An extension mechanism 9 is arranged inside the fixing base 2 and is used to adjust the length of the fixing base 2; The tops of the two extension plates 97 are fixedly connected with jacks 16, and the output ends of the jacks 16 are fixedly connected with the bottom of the positioning seat 3. The top of the positioning seat 3 is provided with a through slot 17 adapted to the support block 8, and the top of the fixed seat 2 is fixedly connected with a support plate 19 via a column 18.

[0020] Through the arrangement of the above-mentioned structure, after the support plate 19 supports the upper bridge deck block, the double-rod hydraulic cylinder 7 drives the limiting members 4 on both sides to move in relative or opposite directions, so as to facilitate alignment with the U-shaped ribs on both sides below the upper bridge deck block, and then the positioning seat 3 moves upward, while providing auxiliary support, so that the limiting members 4 limit the lower part of the upper bridge deck block, thereby improving the stability of the auxiliary device.

[0021] Embodiment 2 Based on Example 1, please refer to Figures 2 to 4 As shown, the specific improvements are as follows: the clamping assembly includes a fixed rod 10 arranged at the four corners of the bottom of the upper pad 5, cavities 11 are opened on both sides inside the lower pad 6, and movable plates 12 are fixedly connected to the front and rear sides of the inner wall of the cavity 11, a spring 13 is fixedly connected between the two movable plates 12, and a clamping rod 14 is fixedly connected to the opposite sides of the two movable plates 12. A handle 15 extending to the outside of the lower pad 6 is fixedly connected to one side of the two movable plates 12, and one end of the clamping rod 14 passes through the fixed rod 10 and extends to the inside of the lower pad 6.

[0022] Through the setting of the above structure, the handle 15 drives the clamping rod 14 to move out of the fixing rod 10, and the fixing rod 10 under the upper pad 5 can be moved out of the groove of the lower pad 6, so that the upper pad 5 and the lower pad 6 can be separated, which is convenient for replacing the limit member 4 according to the width of the U-shaped rib under the upper bridge deck block, thereby increasing the applicable scope of positioning.

[0023] Embodiment 3 In conjunction with Example 1 and Example 2, please refer to Figure 1 and Figure 6 As shown, the specific improvements are as follows: the extension mechanism 9 includes a dual-axis motor 91 for driving the rods on both sides to rotate simultaneously, a fixing groove 92 adapted to the dual-axis motor 91 is provided in the middle of the fixed seat 2, and the two ends of the dual-axis motor 91 are respectively fixedly connected with a first screw rod 93 and a second screw rod 94, the threads on the first screw rod 93 and the second screw rod 94 are set in reverse, grooves 95 are provided on both sides of the top of the fixed seat 2, and sliders 96 are slidably provided on the front and rear sides of the inner wall of the groove 95, an extension plate 97 slidably connected to the bottom of the inner wall of the groove 95 is fixedly connected between the two sliders 96, and a threaded groove 98 is provided on one side of the extension plate 97.

[0024] Through the above-mentioned structural setting, the dual-axis motor 91 drives the first screw 93 and the second screw 94 to rotate, and can drive the two extension plates 97 to move in relative or opposite directions in the groove 95, thereby adjusting the length of the device and expanding the application range of the device.

[0025] Embodiment 4 In conjunction with Embodiments 1 to 3, please refer to Figure 1 and Figure 7 As shown, the specific improvements are as follows: electric push rods 21 are fixedly connected to both sides of the top of the base 1, a cross plate 22 is slidably arranged between the two sides of the inner wall of the base 1, and walking wheels 23 are fixedly connected to both sides of the bottom of the cross plate 22, and the output end of the electric push rod 21 is fixedly connected to the top of the cross plate 22.

[0026] Through the arrangement of the above structure, the electric push rod 21 can drive the walking wheel 23 to move downward to the bottom of the base 1 through the cross plate 22, so as to facilitate the transfer of the device and save manpower and material resources.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment compatible with the equipment can be used.

[0028] When in use, the hydraulic push rod 20 is started, and the support plate 19 is driven to move upward through the fixed seat 2 to support the upper bridge deck block. The double-rod hydraulic cylinder 7 is started, and the limiting members 4 on both sides are driven to move in relative or opposite directions through the support block 8 to align with the U-shaped ribs on the two sides below the upper bridge deck block. Then the jack 16 drives the positioning seat 3 to move upward. While the positioning seat 3 provides auxiliary support, the limiting member 4 is stuck outside the U-shaped rib at the bottom of the upper bridge deck block, so that the upper bridge deck block can be limited to improve the stability during assembly. By starting the dual-axis motor 91, the first screw rod 93 and the second screw rod 94 are driven to rotate. Under the guidance of the slider 96, the extension plates 97 on both sides are driven to move in relative or opposite directions on the first screw rod 93 and the second screw rod 94, so that the length of the device can be adjusted to increase the applicable range of the support. By relatively moving the two handles 15 on the sides of the lower pad 6, the two movable plates 12 are driven to move relatively, and the spring 13 is squeezed, so that the clamping rod 14 moves out of the fixed rod 10 and enters the cavity 11, the upper pad 5 and the lower pad 6 can be separated, so that the limit member 4 can be disassembled, and the limit member 4 can be replaced accordingly according to the width of the U-shaped rib under the upper bridge deck block. It is flexible to use, and by starting the electric push rod 21, the cross plate 22 is driven to move downward, and the walking wheel 23 is driven to move downward to the bottom of the base 1, so that the device can be transferred conveniently.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for assembling and welding steel trusses of a cable-stayed bridge, comprising a base (1), a fixing seat (2) and a positioning seat (3), characterized in that: Also includes: Two limiting members (4) are arranged above the positioning seat (3) via an upper pad (5), wherein the limiting members (4) include two inclined plates (401) and are used to limit the U-shaped ribs under the upper bridge deck block; A lower pad (6) is connected to the upper pad (5) via a clamping assembly and is disposed above the positioning seat (3); A drive assembly is arranged inside the positioning seat (3), the drive assembly comprising a double-rod hydraulic cylinder (7), both ends of the double-rod hydraulic cylinder (7) being fixedly connected to a support block (8) connected to the bottom of the lower pad (6); The extension mechanism (9) is arranged inside the fixing seat (2) and is used to adjust the length of the fixing seat (2).

2. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 1, characterized in that: The clamping assembly comprises a fixing rod (10) arranged at the bottom of the upper pad (5), cavities (11) are provided on both sides of the interior of the lower pad (6), and movable plates (12) are fixedly connected to the front and rear sides of the inner wall of the cavity (11), a spring (13) is fixedly connected between the two movable plates (12), and clamping rods (14) are fixedly connected to the opposite sides of the two movable plates (12).

3. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 2, characterized in that: One side of each of the two movable plates (12) is fixedly connected with a handle (15) extending to the outside of the lower pad (6), and one end of the clamping rod (14) passes through the fixed rod (10) and extends to the inside of the lower pad (6).

4. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 1, characterized in that: The extension mechanism (9) comprises a double-axis motor (91); a fixing groove (92) adapted to the double-axis motor (91) is provided in the middle of the fixing seat (2); a first screw rod (93) and a second screw rod (94) are fixedly connected to the two ends of the double-axis motor (91); grooves (95) are provided on both sides of the top of the fixing seat (2); and sliders (96) are slidably provided on the front and rear sides of the inner wall of the groove (95); an extension plate (97) slidably connected to the bottom of the inner wall of the groove (95) is fixedly connected between the two sliders (96); and a threaded groove (98) is provided on one side of the extension plate (97).

5. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 4, characterized in that: The tops of the two extension plates (97) are fixedly connected to a jack (16), and the output end of the jack (16) is fixedly connected to the bottom of the positioning seat (3).

6. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 1, characterized in that: A through slot (17) adapted to the support block (8) is formed on the top of the positioning seat (3), and a support plate (19) is fixedly connected to the top of the fixing seat (2) via a column (18).

7. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 1, characterized in that: Both sides of the top of the base (1) are fixedly connected with hydraulic push rods (20), and the output end of the hydraulic push rod (20) is fixedly connected to the bottom of the fixed seat (2).

8. The auxiliary device for assembling and welding steel trusses of a cable-stayed bridge according to claim 1, characterized in that: Both sides of the top of the base (1) are fixedly connected to electric push rods (21), a horizontal plate (22) is slidably arranged between the two sides of the inner wall of the base (1), and both sides of the bottom of the horizontal plate (22) are fixedly connected to walking wheels (23), and the output end of the electric push rod (21) is fixedly connected to the top of the horizontal plate (22).

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