Large-span continuous beam construction support structure

Abstract

The invention discloses a large-span continuous beam construction support structure which comprises a support structure arranged between two adjacent piers, a sliding seat is arranged on the top surface of the support structure in a sliding mode, a rotating seat used for bearing a continuous beam is rotationally arranged on the top surface of the sliding seat, and a power assembly used for driving the rotating seat to rotate is arranged on the sliding seat. The continuous beam splicing device has the effects that the position of the continuous beam can be conveniently adjusted, and the continuous beam can be conveniently and accurately spliced.

Description

Technical Field

[0001] The invention relates to the field of continuous beam installation technology, in particular to a large-span continuous beam construction support structure. Background Art

[0002] Continuous beam is a type of beam widely used in engineering structures. In construction, bridges, aviation and other projects, continuous beams are often used as the main load-bearing structure. It is composed of multiple spans of simply supported beams connected in the longitudinal direction. Through reasonable support design and construction methods, the positive bending moment in the span can be significantly reduced, the clearance under the bridge can be increased, and materials can be saved. With the continuous progress of materials science, computational mechanics and construction technology, the design and construction technology of continuous beams will become more advanced and efficient, while paying attention to the requirements of aesthetics, durability and environmental protection, providing safer, more reliable and efficient transportation facilities for people's production and life.

[0003] During the installation of the continuous beam, it is necessary to hoist the continuous beam to the installation position on the pier and then splice the continuous beam. During this process, the bottom of the connecting beam usually needs to be supported by a bracket structure, but the existing bracket structure is difficult to adjust the position of the continuous beam. Therefore, after the continuous beam is hoisted into place, it is difficult to adjust the position of the continuous beam, which makes it inconvenient to accurately splice the continuous beam. Summary of the invention

[0004] In order to facilitate the adjustment of the position of the continuous beam and the precise splicing of the continuous beam, the present application provides a large-span continuous beam construction support structure.

[0005] The large-span continuous beam construction support structure provided in this application adopts the following technical solution: A large-span continuous beam construction support structure includes a support structure arranged between two adjacent piers, a sliding seat is slidably arranged on the top surface of the support structure, a rotating seat for carrying the continuous beam is rotatably arranged on the top surface of the sliding seat, and a power component for driving the rotating seat to rotate is arranged on the sliding seat.

[0006] By adopting the above technical solution, when the continuous beam to be installed is hoisted onto the rotating seat, the driving assembly can drive the rotating seat to rotate slowly, so that the end face of the continuous beam can be parallel to the end face of the installed continuous beam, and when the driving sliding seat slides toward the installed continuous beam, the situation of the two end faces of the continuous beam being non-parallel during installation is reduced, which is conducive to the precise splicing of the continuous beam.

[0007] Preferably, the power assembly includes a gear 1 fixedly connected to the rotating seat, a motor 1 is fixedly connected to the sliding seat, a gear 2 is fixedly connected to the output shaft of the motor 1, and the gear 2 is meshed with the gear 1.

[0008] By adopting the above technical solution, gear two is meshed with gear one. When motor one is started, motor one can drive the rotating seat to rotate slowly through gear one, so that the rotating seat can drive the continuous beam to rotate a certain angle, thereby facilitating accurate splicing of the continuous beam.

[0009] Preferably, a control component is provided on the continuous beam to be installed, and the control component includes an installation base arranged on the top surface of the continuous beam, a sliding plate is slidably arranged on the installation base, and two racks are slidably arranged on the sliding plate, and a resistance rod for resisting the end surface of the installed continuous beam is provided at the end of the rack, and two rotating shafts 1 are provided between the two racks, and the rotating shaft 1 is rotatably arranged on the sliding plate, and the rotating shaft 1 is fixedly connected with a gear 3, and the two gears 3 are respectively meshed with the two racks. The sliding plate is also equipped with a rotating shaft 2, and the rotating shaft 2 and the two rotating shafts 1 are fixedly connected with pulleys, and a belt is installed on the pulley, and a toggle rod is fixedly connected to the pulley on the rotating shaft 2, and a switch assembly for controlling the forward or reverse rotation of the motor 1 when the toggle rod rotates is provided on the sliding plate, and a thrust piece for preventing the sliding of the sliding plate is provided on the installation base.

[0010] By adopting the above technical scheme, when the continuous beam to be installed moves along its length direction and approaches the installed continuous beam, the interference rods on the two racks can both interfere with the end face of the installed continuous beam. When the end face of the continuous beam to be installed and the end face of the installed continuous beam are in a parallel state, the installed continuous beam moves backward together with the sliding plate in a direction away from the installed continuous beam under the interference action of the interference rod. When the end face of the continuous beam to be installed and the end face of the installed continuous beam are not in a parallel state, the two racks will be staggered, so that the pulley on the second rotating shaft drives the toggle rod to rotate, and then the switch assembly can automatically make the motor 1 rotate forward or reverse when the end face of the continuous beam to be installed and the end face of the installed continuous beam are not in a parallel state, so as to adjust the position of the continuous beam.

[0011] Preferably, the switch assembly includes a fixed block, a sliding groove is provided on the fixed block, a sliding block is slidably arranged in the sliding groove, a fixed contact piece 1 and a fixed contact piece 2 are embedded on the inner wall of the sliding groove, a moving contact piece 1 for contacting the fixed contact piece 1 is embedded on the sliding block, and a moving contact piece 2 for contacting the fixed contact piece 2 is also embedded on the sliding block, the fixed contact piece 1 and the moving contact piece 1 are positively connected to the electrical circuit of the motor 1, and the fixed contact piece 2 and the moving contact piece 2 are reversely connected to the electrical circuit of the motor 1, two vertical baffle rods are fixedly connected to the top surface of the sliding block, and the toggle rod is located between the two vertical baffle rods.

[0012] By adopting the above technical solution, the toggle rod is located between the two vertical baffle rods. When the pulley on the rotating shaft 2 drives the toggle rod to rotate, the toggle rod can drive the slider to slide through the vertical baffle rod, so that the motor 1 can automatically adjust the direction of the motor 1 according to the inclination direction between the end face of the continuous beam to be installed and the installed continuous beam, thereby facilitating the adjustment of the position of the continuous beam to be installed.

[0013] Preferably, an adjustment plate is provided at the bottom end of the second rotating shaft, the fixed block is fixedly connected to the adjustment plate, the second rotating shaft is rotatably set on the adjustment plate, the adjustment plate is slidably set on the sliding plate, a limiting groove is provided on the sliding plate, a limiting block is fixedly connected to the bottom surface of the adjustment plate, and the limiting block is slidably connected to the inner wall of the dormitory limiting groove; a fixed plug rod is passed through the adjustment plate, a plurality of slots are provided on the upper end surface of the sliding plate, and the fixed plug rod is inserted into the slot.

[0014] By adopting the above technical solution, the adjustment plate is slidably set on the sliding plate, and the limit block can limit the sliding direction of the adjustment plate under the restriction of the inner wall of the limit groove, thereby preventing the adjustment plate from being offset when the gear three rotates; a fixed plug rod is passed through the adjustment plate, and the fixed plug rod is inserted into the slot to fix the position of the adjustment plate. At the same time, the adjustable fixed plug rod can be inserted into different slots so that the adjustment plate can adjust the tension of the belt, which is convenient for the belt to synchronously drive the pulley to rotate.

[0015] Preferably, the sliding plate is fixedly connected to a connecting seat, the second rotating shaft is rotatably set on the connecting seat, the connecting seat is fixedly connected to a positioning ring, a coil spring is set in the positioning ring, one end of the coil spring is connected to the inner wall of the positioning ring, and the other end of the coil spring is fixedly connected to the second rotating shaft.

[0016] By adopting the above technical solution, the coil spring can hinder the rotation of the second rotating shaft, thereby reducing the possibility of accidental staggered movement of the two racks, which may lead to accidental starting of the motor one.

[0017] Preferably, side panels are connected to both sides of the mounting base plate, a telescopic groove is provided on the side wall of the mounting base plate, a telescopic plate is fixedly connected to the side panel, the telescopic plate slides in the telescopic groove, a spring 1 is provided in the telescopic groove, one end of the spring 1 is fixedly connected to the telescopic plate, and the other end of the spring 1 is fixedly connected to the inner wall of the telescopic groove; a fastening screw is threadedly connected to the side panel, and a contact plate for contacting the side surface of the continuous beam is fixed on the fastening screw.

[0018] By adopting the above technical solution, when installing the base plate, the side plate is pulled to drive the telescopic plate tension spring to move, and under the elastic force of spring one, the side plate abuts against the side plate of the base plate to preliminarily fix one side of the base plate. After determining the position, when the fastening screw is rotated, the abutting plate can move toward or away from the side of the continuous beam, thereby facilitating the control component to be fixed on the continuous beam or removed from the continuous beam.

[0019] Preferably, the interference rod vertically passes through the end of the rack and is slidably arranged on the rack, the top of the interference rod is fixedly connected with a resistance plate, a second spring is sleeved on the interference rod, the top end of the second spring is fixed to the bottom surface of the resistance plate, the bottom end of the second spring is fixed to the top surface of the rack, and the bottom end of the interference rod is provided with an inclined surface for interfering with the installed continuous beam.

[0020] By adopting the above technical solution, the top end of spring two is fixed to the bottom surface of the abutment plate, and the bottom end of spring two is fixed to the top surface of the rack, so that after the inclined surface of the abutment rod abuts against the installed continuous beam, the abutment rod can drive the rack and the sliding plate to move. When the sliding plate moves to the extreme position, the installed continuous beam can push the abutment rod upward through the inclined surface, so that the continuous beam to be installed can be closer to the installed continuous beam, thereby facilitating the mutual welding and fixation of the two box beams.

[0021] Preferably, the thrust member includes a spring three having one end fixedly connected to the side surface of the sliding plate, a vertical stop plate fixedly connected to the top surface of the mounting base plate, the vertical stop plate being located on the side of the sliding plate away from the installed continuous beam, and the other end of the spring three being fixedly connected to the vertical stop plate.

[0022] By adopting the above technical solution, under the elastic force of the spring three, the sliding of the sliding plate is prevented, so that the structure of the control component is more stable.

[0023] Preferably, the support structure is fixedly connected to a second motor, the output shaft of the second motor is fixedly connected to a drive screw, the sliding seat is fixedly connected to a drive seat, and the drive screw passes through the drive seat and is threadedly connected to the drive seat.

[0024] By adopting the above technical solution, when the second motor is started, the second motor can drive the sliding seat to move by driving the screw and the driving seat, so as to facilitate the continuous beam to be installed to approach the installed continuous beam, and in the process of the second motor driving the continuous beam to be installed to approach the installed continuous beam, the control mechanism can automatically adjust the position of the continuous beam to be installed.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the continuous beam to be installed is hoisted onto the rotating seat, the driving assembly can drive the rotating seat to rotate slowly, so that the end face of the continuous beam can be parallel to the end face of the installed continuous beam, and when the driving sliding seat slides close to the installed continuous beam, the non-parallel state of the two end faces of the continuous beam during installation is reduced, which is conducive to the precise splicing of the continuous beam; 2. When the continuous beam to be installed moves along its length direction and approaches the installed continuous beam, the interference rods on the two racks can both interfere with the end face of the installed continuous beam. When the end face of the continuous beam to be installed and the end face of the installed continuous beam are in a parallel state, the installed continuous beam moves backward together with the sliding plate in a direction away from the installed continuous beam under the interference effect of the interference rod. When the end face of the continuous beam to be installed and the end face of the installed continuous beam are not in a parallel state, the two racks will be staggered, so that the pulley on the second rotating shaft drives the toggle rod to rotate, and then the switch assembly can automatically make the motor 1 rotate forward or reverse when the end face of the continuous beam to be installed and the end face of the installed continuous beam are not in a parallel state, so as to adjust the position of the continuous beam. 3. The toggle rod is located between the two vertical baffles. When the pulley on the rotating shaft 2 drives the toggle rod to rotate, the toggle rod can drive the slider to slide through the vertical baffles, so that the motor 1 can automatically adjust the direction of the motor 1 according to the inclination direction between the end faces of the continuous beam to be installed and the installed continuous beam, thereby facilitating the adjustment of the position of the continuous beam to be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the continuous beam installed on the bridge pier in the embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of the bracket structure in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the overall structure of the control component in the embodiment of the present application.

[0029] Figure 4 It is a cross-sectional view of the sliding plate in the embodiment of the present application.

[0030] Figure 5 yes Figure 3 A partial enlarged view of point A in the middle.

[0031] Figure 6 It is a cross-sectional view of the fixing block in the embodiment of the present application.

[0032] Explanation of the reference numerals: 1. bracket structure; 11. jack; 12. motor 2; 13. drive screw; 2. sliding seat; 21. drive seat; 3. rotating seat; 4. power assembly; 41. gear 1; 42. motor 1; 43. gear 2; 5. control assembly; 51. mounting base plate; 511. side plate; 5111. telescopic slot; 5112. telescopic plate; 5113. spring 1; 512. fastening screw; 513. contact plate; 514. thrust piece; 5141. spring 3; 515. vertical stop plate; 52. sliding plate; 521. guide block; 522. fixed plug rod; 523. slot ; 53. rack; 531. resistance rod; 5311. inclined plane; 532. resistance plate; 533. spring two; 54. gear three; 55. pulley; 551. toggle rod; 56. belt; 57. rotating shaft one; 58. rotating shaft two; 59. adjusting plate; 591. limit groove; 5911. limit block; 592. connecting seat; 593. positioning ring; 594. coil spring; 6. switch assembly; 61. fixed block; 611. slide groove; 62. slider; 63. vertical stop rod; 64. fixed contact piece one; 65. fixed contact piece two; 66. moving contact piece one; 67. moving contact piece two; 100. continuous beam; 101. bridge pier. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The present application embodiment discloses a large-span continuous beam construction support structure. Figure 1 and Figure 2 As shown, the splicing mechanism includes a support structure 1, a sliding seat 2, a rotating seat 3, a power assembly 4, a control assembly 5 and a switch assembly 6. The two ends of the support structure 1 are respectively located above two adjacent bridge piers 101. Four jacks 11 are arranged on the bottom surface of the support structure 1. The four jacks 11 are respectively located at four corners, and the bottom surfaces of the jacks 11 are against the bridge piers 101. The position of the support structure 1 can be adjusted vertically by the jacks 11.

[0035] Reference Figure 1 and Figure 2 As shown, two guide rails are fixedly connected to the top surface of the support structure 1, and the two guide rails are parallel to each other. The sliding seat 2 is slidably connected to the two guide rails. Under the guidance of the guide rails, the sliding seat 2 can stably approach the direction of the installed continuous beam 100.

[0036] Reference Figure 1 and Figure 2As shown, the support structure 1 is fixedly connected to the motor 2 12, the output shaft of the motor 2 12 is fixedly connected to the drive screw 13, the sliding seat 2 is fixedly connected to the drive seat 21, and the drive screw 13 passes through the drive seat 21 and is threadedly connected to the drive seat 21. The rotating seat 3 is rotatably arranged on the top surface of the sliding seat 2, and the continuous beam 100 to be installed is placed on the top surface of the rotating seat 3.

[0037] Reference Figure 2 As shown, the power assembly 4 includes a gear 1 41, a motor 1 42 and a gear 2 43. The gear 1 41 is sleeved on the outer side of the rotating seat 3, the gear 1 41 is fixedly connected to the rotating seat 3, the motor 1 42 is fixedly connected to the sliding seat 2, the gear 2 43 is fixedly connected to the output shaft of the motor 1 42, and the gear 2 43 is meshed with the gear 1 41.

[0038] Reference Figure 1 and Figure 3 As shown, the control assembly 5 is arranged on the top surface of the continuous beam 100 to be installed, and the control assembly 5 includes a mounting base 51, a sliding plate 52, a rack 53, a gear 3 54, a pulley 55, a belt 56, a rotating shaft 1 57, a rotating shaft 2 58 and an adjusting plate 59. The mounting base 51 is placed on the top surface of the continuous beam 100 to be installed, and the end surface of the mounting base 51 is flush with the end surface of the continuous beam 100 to be installed. Four side plates 511 are fixedly connected to the side surface of the mounting base 51, and the four side plates 511 are symmetrically arranged on both sides of the mounting base 51. A telescopic plate 5112 is fixedly welded on the side plate 511, and a telescopic groove 5111 for the telescopic plate 5112 to slide is opened in the horizontal direction on the side plate of the mounting base 51, and a spring 1 5113 is horizontally arranged in the telescopic groove 5111, and the two ends of the spring 1 5113 are respectively fixedly welded to the telescopic plate 5112 and the inner wall of the telescopic groove 5111. The mounting base plate 51 is threadedly connected with a fastening screw 512, which is horizontally arranged. A resistance plate 513 is fixed on the fastening screw 512. When the fastening screw 512 is rotated, the resistance plate 513 can be tightly pressed against the side of the continuous beam 100 to be installed, so that the control component 5 can be stably fixed on the continuous beam 100.

[0039] Reference Figure 1 and Figure 3As shown, a slide rail is fixedly welded on the top surface of the mounting base plate 51, and the sliding plate 52 is slidably connected to the slide rail, so that the sliding plate 52 can slide toward or away from the installed continuous beam 100. A thrust piece 514 is provided on the mounting base plate 51 to prevent the sliding of the sliding plate 52. The thrust piece 514 includes a spring 5141 with one end fixedly connected to the side of the sliding plate 52. A vertical stop plate 515 is fixedly connected to the top surface of the mounting base plate 51. The vertical stop plate 515 is located on the side of the sliding plate 52 away from the installed continuous beam 100, and the other end of the spring 5141 is fixedly connected to the vertical stop plate 515.

[0040] Reference Figure 1 and Figure 3 As shown, two racks 53 are arranged in parallel on the sliding plate 52, and two guide blocks 521 are arranged on the two racks 53. The racks 53 pass through the guide blocks 521, and the racks 53 are slidably arranged on the sliding plate 52, and the teeth of the racks 53 are arranged between the two guide blocks 521. A resisting rod 531 is vertically penetrated on the rack 53, and the resisting rod 531 is slidably arranged on the rack 53. The top surface of the resisting rod 531 is fixedly connected with a resisting plate 532, and the resisting rod 531 is sleeved with a second spring 533, the top end of the second spring 533 is fixed to the bottom surface of the resisting plate 532, and the bottom end of the second spring 533 is fixed to the top surface of the rack 53, and the bottom end of the resisting rod 531 is provided with an inclined surface 5311 for resisting the installed continuous beam 100.

[0041] Reference Figure 1 and Figure 3 As shown, two rotating shafts 1 57 are rotatably arranged on the top surface of the sliding plate 52, and the two rotating shafts 1 57 are both arranged vertically, and the two rotating shafts 1 57 are both arranged between the two racks 53. Two gears 3 54 are arranged, and the two gears 3 54 are respectively fixedly connected to the two rotating shafts 1 57. The two gears 3 54 are respectively meshed with the two racks 53.

[0042] Reference Figure 3 and Figure 4As shown, an adjustment plate 59 is arranged below the second rotating shaft 58, and the adjustment plate 59 is slidably arranged on the sliding plate 52. A limiting groove 591 is formed on the upper end surface of the sliding plate 52, and a limiting block 5911 is fixedly welded on the lower end surface of the adjustment plate 59. The limiting block 5911 is slidably connected to the inner wall of the limiting groove 591 in the horizontal direction, thereby guiding the movement of the adjustment plate 59 to avoid being affected by the rotation of the third gear 54 thereon. A connecting seat 592 is fixedly connected to the sliding plate 52, and the second rotating shaft 58 is vertically rotatably arranged on the connecting seat 592. A positioning ring 593 is fixedly connected to the connecting seat 592, and a coil spring 594 is arranged inside the positioning ring 593. One end of the coil spring 594 is connected to the inner wall of the positioning ring 593, and the other end of the coil spring 594 is fixedly connected to the second rotating shaft 58. A fixed insertion rod 522 is slidably disposed on the adjustment plate 59 . A plurality of slots 523 are provided on the upper end surface of the sliding plate 52 . The plurality of slots 523 are on the same straight line. The fixed insertion rod 522 is disposed through the adjustment plate 59 and inserted into the slots 523 .

[0043] Reference Figure 4 and Figure 5 As shown, three pulleys 55 are provided, and the three pulleys 55 are respectively fixedly connected to the second rotating shaft 58 and the two first rotating shafts 57 . The belt 56 is installed on the pulley 55 , and the pulley 55 on the second rotating shaft 58 is fixedly connected to the toggle rod 551 .

[0044] Reference Figure 5 and Figure 6 As shown, the switch assembly 6 includes a fixed block 61, a slider 62, a vertical blocking rod 63, a fixed contact piece 1 64, a fixed contact piece 2 65, a movable contact piece 1 66 and a movable contact piece 2 67. The fixed block 61 is fixedly connected to the top surface of the adjustment plate 59, and a slide groove 611 is provided on the top surface of the fixed block 61. The slider 62 is slidably arranged in the slide groove 611. When the position of the adjustment plate 59 is adjusted, the fixed block 61 moves together with the adjustment plate 59 to avoid the possibility that the toggle rod 551 is separated from the fixed block 61.

[0045] Reference Figure 2 and Figure 6 As shown, the fixed contact piece 1 64 and the fixed contact piece 2 65 are embedded in the inner wall of the slide groove 611, and the movable contact piece 1 66 and the movable contact piece 2 67 are embedded in the slider 62. When the slider 62 slides to one side of the slide groove 611, the movable contact piece 1 66 can contact the fixed contact piece 1 64, and when the slider 62 slides to the other side of the slide groove 611, the movable contact piece 2 67 can contact the fixed contact piece 2 65. The fixed contact piece 1 64 and the movable contact piece 1 66 are positively connected to the electric circuit of the motor 1 42, and the fixed contact piece 2 65 and the movable contact piece 2 67 are reversely connected to the electric circuit of the motor 1 42.

[0046] Reference Figure 5As shown, two vertical blocking rods 63 are fixedly connected to the top surface of the slider 62 , and the toggle rod 551 is located between the two vertical blocking rods 63 .

[0047] The implementation principle of the large-span continuous beam construction support structure of the embodiment of the present application is as follows: when the continuous beam 100 to be installed moves along its length direction and approaches the installed continuous beam 100, the interference rods 531 on the two racks 53 can both interfere with the end faces of the installed continuous beam 100. When the end faces of the continuous beam 100 to be installed and the end faces of the installed continuous beam 100 are in a parallel state, the installed continuous beam 100 moves backward together with the sliding plate 52 in a direction away from the installed continuous beam 100 under the interference action of the interference rods 531. When the end faces of the continuous beam 100 to be installed and the end faces of the installed continuous beam 100 are not in a parallel state, the two racks 53 will be staggered, and the motor 42 will be automatically rotated forward or reversed to adjust the position of the continuous beam 100. The pulley 55 on the second rotating shaft 58 drives the toggle rod 551 to rotate, so that the switch assembly 6 can be in a state where the end surface of the continuous beam 100 to be installed is not parallel to the end surface of the installed continuous beam 100. The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The large-span continuous beam construction support structure is characterized by: The invention comprises a support structure (1) arranged between two adjacent bridge piers (101), a sliding seat (2) being slidably arranged on the top surface of the support structure (1), a rotating seat (3) for carrying a continuous beam (100) being rotatably arranged on the top surface of the sliding seat (2), and a power assembly (4) for driving the rotating seat (3) to rotate being arranged on the sliding seat (2).

2. The large-span continuous beam construction support structure according to claim 1 is characterized in that: The power assembly (4) comprises a gear 1 (41) fixedly connected to the rotating seat (3); a motor 1 (42) fixedly connected to the sliding seat (2); a gear 2 (43) fixedly connected to the output shaft of the motor 1 (42); and the gear 2 (43) meshes with the gear 1 (41).

3. The large-span continuous beam construction support structure according to claim 2 is characterized in that: The continuous beam (100) to be installed is provided with a control assembly (5), the control assembly (5) comprising an installation base plate (51) arranged on the top surface of the continuous beam (100), a sliding plate (52) slidably arranged on the installation base plate (51), two racks (53) slidably arranged on the sliding plate (52), a resistance rod (531) for resisting against the end surface of the installed continuous beam (100) is arranged at the end of the rack (53), two rotating shafts (57) are arranged between the two racks (53), the rotating shafts (57) are rotatably arranged on the sliding plate (52), and the rotating shafts (57) are fixedly connected with gears (53). 4), the two gear threes (54) are respectively meshed with the two racks (53), the sliding plate (52) is also provided with a rotating shaft two (58), the rotating shaft two (58) and the two rotating shafts one (57) are both fixedly connected with pulleys (55), a belt (56) is installed on the pulley (55), a toggle rod (551) is fixedly connected to the pulley (55) on the rotating shaft two (58), the sliding plate (52) is provided with a switch assembly (6) for controlling the forward or reverse rotation of the motor one (42) when the toggle rod (551) is rotated, and the mounting base plate (51) is provided with a thrust piece (514) for preventing the sliding of the sliding plate (52).

4. The large-span continuous beam construction support structure according to claim 3 is characterized in that: The switch assembly (6) comprises a fixed block (61), a slide groove (611) is provided on the fixed block (61), a slider (62) is slidably arranged in the slide groove (611), a fixed contact piece 1 (64) and a fixed contact piece 2 (65) are embedded on the inner wall of the slide groove (611), a movable contact piece 1 (66) for contacting the fixed contact piece 1 (64) is embedded on the slider (62), and a movable contact piece 1 (66) for contacting the fixed contact piece 1 (64) is also embedded on the slider (62). The movable contact piece 2 (67) is in contact with the contact piece 2 (65), the fixed contact piece 1 (64) and the movable contact piece 1 (66) are positively connected to the electrical circuit of the motor 1 (42), the fixed contact piece 2 (65) and the movable contact piece 2 (67) are reversely connected to the electrical circuit of the motor 1 (42), two vertical blocking rods (63) are fixedly connected to the top surface of the slider (62), and the toggle rod (551) is located between the two vertical blocking rods (63).

5. The large-span continuous beam construction support structure according to claim 3 is characterized in that: An adjustment plate (59) is arranged at the bottom end of the second rotating shaft (58), the fixed block (61) is fixedly connected to the adjustment plate (59), the second rotating shaft (58) is rotatably arranged on the adjustment plate (59), the adjustment plate (59) is slidably arranged on the sliding plate (52), a limiting groove (591) is provided on the sliding plate (52), a limiting block (5911) is fixedly connected to the bottom surface of the adjustment plate (59), and the limiting block (5911) is slidably connected to the inner wall of the limiting groove (591); a fixed insertion rod (522) is passed through the adjustment plate (59), a plurality of slots (523) are provided on the upper end surface of the sliding plate (52), and the fixed insertion rod (522) is inserted into the slots (523).

6. The large-span continuous beam construction support structure according to claim 5 is characterized in that: The sliding plate (52) is fixedly connected to a connecting seat (592), the second rotating shaft (58) is rotatably arranged on the connecting seat (592), the connecting seat (592) is fixedly connected to a positioning ring (593), a coil spring (594) is arranged inside the positioning ring (593), one end of the coil spring (594) is connected to the inner wall of the positioning ring (593), and the other end of the coil spring (594) is fixedly connected to the second rotating shaft (58).

7. The large-span continuous beam construction support structure according to claim 3 is characterized in that: Both sides of the mounting base plate (51) are fixedly connected with side plates (511), a telescopic groove (5111) is provided on the side wall of the mounting base plate (51), a telescopic plate (5112) is fixedly connected to the side plate (5111), the telescopic plate (5112) slides in the telescopic groove (5111), a spring (5113) is arranged in the telescopic groove (5111), one end of the spring (5113) is fixedly connected to the telescopic plate (5112), and the other end of the spring (5113) is fixedly connected to the inner wall of the telescopic groove (5111); a fastening screw (512) is threadedly connected to the side plate (5111), and a contact plate (513) for contacting the side surface of the continuous beam (100) is fixed on the fastening screw (512).

8. The large-span continuous beam construction support structure according to claim 3 is characterized in that: The resistance rod (531) vertically passes through the end of the rack (53) and is slidably arranged on the rack (53); the top of the resistance rod (531) is fixedly connected with a resistance plate (532); a second spring (533) is sleeved on the resistance rod (531); the top of the second spring (533) is fixed to the bottom surface of the resistance plate (532); the bottom end of the second spring (533) is fixed to the top surface of the rack (53); and the bottom end of the resistance rod (531) is provided with an inclined surface (5311) for resisting the installed continuous beam (100).

9. The large-span continuous beam construction support structure according to claim 3 is characterized in that: The thrust member (514) includes a spring three (5141) having one end fixedly connected to the side surface of the sliding plate (52); a vertical stop plate (515) is fixedly connected to the top surface of the mounting base plate (51); the vertical stop plate (515) is located on a side of the sliding plate (52) away from the installed continuous beam (100); and the other end of the spring three (5141) is fixedly connected to the vertical stop plate (515).

10. The large-span continuous beam construction support structure according to claim 3, characterized in that: The support structure (1) is fixedly connected to a second motor (12), the output shaft of the second motor (12) is fixedly connected to a drive screw (13), the sliding seat (2) is fixedly connected to a drive seat (21), and the drive screw (13) passes through the drive seat (21) and is threadedly connected to the drive seat (21).

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