Supporting device convenient to operate and used for extra-large bridge construction

Abstract

The invention discloses a supporting device convenient to operate and used for extra-large bridge construction, and relates to the technical field of bridge construction. The steel frame structure wraps the outer side of the central load part; the height driving device is mounted at the top of the central load piece; the supporting assembly is installed on the top of the steel frame structure and driven by the height driving device to synchronously ascend and descend; a motion guide device; the position adjusting device is arranged and driven by the first telescopic hydraulic cylinder to drive the bridge component to slide, the position of the bridge component is slightly adjusted, the bridge component is prevented from deviating during installation, meanwhile, when the bridge component is adjusted and the position adjusting device is reset, the bridge component cannot be driven to displace, and the mounting efficiency is improved. The bridge component can be kept at the corresponding position, and the height of the position adjusting device is reduced during resetting, so that the height of the bridge component is not increased.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to an easy-to-operate supporting device for extra-large bridge construction. Background Art

[0002] Bridges are structures that allow vehicles and pedestrians to pass smoothly. Nowadays, they are not only built on rivers, lakes and seas, but also in areas with heavy traffic to divert vehicles. Bridges are generally composed of an upper structure and a lower structure. The upper structure is for vehicles and pedestrians to pass, and the lower structure is fixed on the surface and below the ground. The bridge supports are piers, which are used to connect the upper and lower structures and support the upper structure.

[0003] During the construction of a bridge, it is often necessary to make auxiliary support adjustments to the bottom or outside of the bridge. Common bridge supports are mostly completed by building a steel frame structure in conjunction with bearings to support the bridge body. When the bridge section is undergoing support construction, in order to cope with the different horizontal heights between the bridge and the ground and the height impact caused by ground subsidence, the steel frame often needs to independently support the bridge section. However, it is difficult to fine-tune the height of the bridge section with the completed steel frame structure, making it very inconvenient to build the steel frame structure. During construction, the support effect is poor and it is difficult to calibrate according to the level of the bridge body, which affects the construction quality and is inconvenient to move to the designated position.

[0004] Therefore, it is necessary to invent a support device for extra-large bridge construction that is easy to operate to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an easy-to-operate support device for extra-large bridge construction to solve the problem in the above background technology that it is difficult to fine-tune the height of the bridge section and it is inconvenient to move the bridge section to a designated position.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a support device for extra-large bridge construction that is easy to operate, comprising: Center load member; A steel frame structure wrapped around the outside of the central load-bearing member; A height driving device, the height driving device is installed on the top of the central load member; A support assembly, which is installed on the top of the steel frame structure and is driven to rise and fall synchronously under the drive of the height driving device; A guide device, which is installed inside the support assembly and connected to the height drive device; A load-bearing platform, which is installed on the top of the support assembly and is raised and lowered by the height driving device; a first telescopic hydraulic cylinder, wherein the first telescopic hydraulic cylinder is fixed on the top of the bearing platform; A position adjusting device is installed on the top of the bearing platform and drives the bridge to slide under the drive of the first telescopic hydraulic cylinder.

[0007] Optionally, the height driving device includes: a second hydraulic cylinder, the second hydraulic cylinder being fixed to the top of the central load member; A lifting support plate, the lifting support plate is fixed on the top of the second hydraulic cylinder and connected to the bearing platform; Two force-applying plates are provided and are respectively hinged at two ends of the bottom of the lifting support plate.

[0008] Optionally, the height driving device further includes: A gear plate, the gear plate being hinged to an end of the force-applying plate away from the lifting support plate; A restraining frame is fixed to the top of the supporting assembly and is used to restrain the gear plate.

[0009] Optionally, the support assembly includes: A first receiving plate, wherein the first receiving plate is fixed to the top of the steel frame structure; A directional sleeve, wherein a plurality of directional sleeves are provided and fixed on the top of the first receiving plate and correspond one to one with the height driving device; A threaded rod, the threaded rod can be lifted and inserted into the top of the directional sleeve; A buffer assembly is fixed to the top of the threaded rod.

[0010] Optionally, the buffer component includes: A receiving frame, wherein the receiving frame is fixed to the top of the threaded rod; A load-bearing plate, which is slidably plugged into the top opening of the receiving frame and connected to the bearing platform; The spring is fixed inside the receiving frame and is fixedly connected to the bottom of the bearing plate.

[0011] Optionally, the guiding device includes: A rotating sleeve, the rotating sleeve being rotatably sleeved on the outer side of the directional sleeve; A gear, which is fixed to the outside of the rotating sleeve and meshes with the gear plate; The protrusion is fixed on the inner surface of the rotating sleeve and is located above the directional sleeve.

[0012] Optionally, the guiding device further includes: A threaded sleeve, which is rotatably sleeved on the outside of the threaded rod and installed inside the rotating sleeve; The limiting groove is arranged on the outer side of the threaded sleeve, and the protrusion is inserted into the inner side of the limiting groove.

[0013] Optionally, the carrying platform includes: A platform plate, the platform plate is fixed on the top of the bearing plate; The first support columns are provided in two groups and are respectively fixed on both sides of the top of the platform plate; An inclined platform, wherein two inclined platforms are provided and are respectively fixed at the top ends of the platform plate; A receiving plate, wherein two receiving plates are provided and are respectively fixed at two ends of the top of the platform plate and connected to the first telescopic hydraulic cylinder.

[0014] Optionally, the position adjustment device includes: A sliding frame, the sliding frame being slidably placed on top of the inclined platform; An articulated head, which is fixed to one side of the sliding frame and is articulated with the first telescopic hydraulic cylinder; A friction wheel, the friction wheel being rotatably mounted inside the sliding frame; A ratchet wheel is installed at the connection between the friction wheel and the sliding frame.

[0015] Optionally, the steel frame structure includes: Second support columns, four of which are provided and located at the four outer corners of the central load member; A positioning frame, wherein two groups of the positioning frames are provided and are respectively fixed to the two ends of the outer side of the second supporting column; A cross frame, both ends of which are fixedly connected to the positioning frame.

[0016] Technical effects and advantages of the present invention: 1. The present invention drives the bridge component to slide under the drive of the first telescopic hydraulic cylinder by setting a position adjusting device, and makes slight adjustments to the position of the bridge component to avoid displacement of the bridge component during installation. At the same time, when the bridge component is adjusted and the position adjusting device is reset, it will not cause the bridge component to be displaced, so that the bridge component can be maintained at the corresponding position, and the height of the position adjusting device decreases during reset, which will not cause the height of the bridge component to increase.

[0017] 2. The present invention realizes synchronous operation of the height driving device and the support assembly by setting a guiding device, so that the height driving device drives the support assembly to operate synchronously during extension and retraction, realizes synchronous sliding of the support assembly, and determines the telescopic height of the support assembly according to the telescopic height of the height driving device.

[0018] 3. The present invention uses the protrusion and the limiting groove to prevent the buffer assembly from rising in the initial stage of the second hydraulic cylinder extending, and to drive the buffer assembly down when the second hydraulic cylinder retracts and starts, thereby preventing the height of the second hydraulic cylinder from affecting the slight lifting and lowering of the bridge component; 4. The present invention adjusts the height of the position adjusting device when the position adjusting device slides by setting a tilting platform, so that the position adjusting device can rise and contact with the bridge component, and rely on friction to drive the bridge component to slide, adjust the position of the bridge component, and descend and break contact with the bridge component when the position adjusting device is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the bearing platform of the present invention; Figure 3 It is a schematic diagram of the steel frame structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 This is a schematic diagram of the directional sleeve structure of the present invention; Figure 6 It is a schematic diagram of the structure of the height driving device of the present invention; Figure 7 This is a schematic diagram of the structure of the buffer assembly of the present invention; Figure 8 It is a schematic diagram of the ratchet structure of the present invention.

[0020] In the figure: 100, center load member; 200, steel frame structure; 210, second support column; 220, positioning frame; 230, cross frame; 300, height driving device; 310, second hydraulic cylinder; 320, lifting support plate; 330, force plate; 340, gear plate; 350, limiting frame; 400, support assembly; 410, first receiving plate; 420, directional sleeve; 430, threaded rod; 440, buffer assembly; 441, receiving frame; 442, bearing plate; 443, spring; 500, guide device; 510, rotating sleeve; 520, gear; 530, protrusion; 540, threaded sleeve; 550, limiting groove; 600, bearing platform; 610, platform plate; 620, first supporting column; 630, tilting platform; 640, receiving plate; 700, first telescopic hydraulic cylinder; 800, position adjustment device; 810, sliding frame; 820, hinged head; 830, friction wheel; 840, ratchet wheel. DETAILED DESCRIPTION

[0021] 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.

[0022] The present invention provides Figure 1-8 A support device for extra-large bridge construction that is easy to operate is shown, comprising: Center load member 100; A steel frame structure 200, the steel frame structure 200 is wrapped around the outside of the central load member 100; A height driving device 300, which is installed on the top of the central load member 100 and is used to drive the bridge to rise; The support assembly 400 is installed on the top of the steel frame structure 200 and is driven to rise and fall synchronously by the height driving device 300; The guiding device 500 is installed inside the supporting assembly 400 and connected with the height driving device 300 to achieve synchronous lifting of the height driving device 300 and the supporting assembly 400; The carrying platform 600 is installed on the top of the supporting assembly 400 and is raised and lowered by the height driving device 300; A first telescopic hydraulic cylinder 700, which is fixed on the top of the carrying platform 600; The position adjusting device 800 is installed on the top of the bearing platform 600 and drives the bridge to slide under the drive of the first telescopic hydraulic cylinder 700.

[0023] When adjusting the position of the bridge component, the first telescopic hydraulic cylinder 700 is started, so that the first telescopic hydraulic cylinder 700 pushes the position adjustment device 800 to slide, and rises under the guidance of the carrying platform 600 to contact the bridge component, and the bridge component continues to move, and the bridge component is driven to move and adjust the position by friction. After the position of the bridge component is adjusted, the first telescopic hydraulic cylinder 700 is started, so that the first telescopic hydraulic cylinder 700 drives the position adjustment device 800 to slide and reset, so that the position adjustment device 800 slips relative to the bridge component to reduce friction, and the height is reduced when sliding; When adjusting the height of the bridge component, the height driving device 300 is started to rise, and the guiding device 500 is pulled to rotate when the height driving device 300 rises, and after the height driving device 300 contacts the bearing platform 600, the guiding device 500 starts to drive the supporting assembly 400 to rise synchronously. When the height of the bridge component is adjusted, the height driving device 300 is started to descend, and in the initial stage of the cooperation relationship of the guiding device 500 being restored, the supporting assembly 400 will not be driven to descend when the cooperation relationship is restored to the initial stage. Among them, the position adjustment device 800 is set to drive the bridge component to slide under the drive of the first telescopic hydraulic cylinder 700, and the position of the bridge component is slightly adjusted to avoid the bridge component from being offset during installation. At the same time, when the bridge component is adjusted and the position adjustment device 800 is reset, it will not cause the bridge component to be displaced, so that the bridge component can be maintained at the corresponding position, and when resetting, the height of the position adjustment device 800 decreases, which will not cause the height of the bridge component to increase. Among them, the setting of the guiding device 500 realizes the synchronous operation of the height driving device 300 and the supporting assembly 400, so that the height driving device 300 drives the supporting assembly 400 to operate synchronously when extending and retracting, realizes the synchronous sliding of the supporting assembly 400, and determines the telescopic height of the supporting assembly 400 according to the telescopic height of the height driving device 300.

[0024] In some embodiments of the present invention, the height driving device 300 includes: A second hydraulic cylinder 310, which is fixed on the top of the central load member 100, and a plurality of second hydraulic cylinders 310 are provided and evenly distributed at equal distances; A lifting support plate 320, which is fixed on the top of the second hydraulic cylinder 310 and connected to the carrying platform 600; The force applying plates 330 are provided with two force applying plates 330 , and are respectively hinged at two ends of the bottom of the lifting support plate 320 .

[0025] The second hydraulic cylinder 310 is used to drive the lifting support plate 320 to rise, so that the lifting support plate 320 can be pushed onto the carrying platform 600 normally. The force applying plate 330 is arranged to normally pull the guiding device 500 to rotate during the lifting and lowering process of the carrying platform 600 .

[0026] In some embodiments of the present invention, the height driving device 300 further includes: The gear plate 340 is hinged to one end of the force plate 330 away from the lifting support plate 320 and meshes with the guide device 500 to drive the guide device 500 to rotate when sliding; The limiting frame 350 is fixed to the top of the supporting assembly 400 and is used to limit the gear plate 340 .

[0027] When in use, the second hydraulic cylinder 310 is started, so that the second hydraulic cylinder 310 drives the lifting support plate 320 to move up and down, and drives the force plate 330 to swing while the lifting support plate 320 moves up and down, and pulls the gear plate 340 to slide synchronously, so that the gear plate 340 drives the guide device 500 to rotate; The gear plate 340 is meshed with the guide device 500, so that the gear plate 340 slides under the drive of the force plate 330 and drives the guide device 500 to rotate; The setting of the limiting frame 350 can limit the height of the gear plate 340 , so that the gear plate 340 will not change in height when driven by the force applying plate 330 .

[0028] In some embodiments of the present invention, the support assembly 400 includes: A first receiving plate 410, the first receiving plate 410 is fixed on the top of the steel frame structure 200; A plurality of orientation sleeves 420 are provided and fixed on the top of the first receiving plate 410 and corresponding to the height driving devices 300 one by one; The threaded rod 430 is inserted into the top of the directional sleeve 420 and connected to the guide device 500. When the guide device 500 rotates, the threaded rod 430 is driven to rise and fall; The buffer assembly 440 is fixed on the top of the threaded rod 430 .

[0029] When the guide device 500 rotates, the threaded rod 430 is driven to rise and fall under the action of the thread, so that the threaded rod 430 drives the buffer assembly 440 to rise, and the buffer assembly 440 drives the carrying platform 600 to rise and fall synchronously to adjust the height of the carrying platform 600; The first receiving plate 410 is connected to the steel frame structure 200 and ensures the normal installation and fixation of the directional sleeve 420; The directional sleeve 420 can guide the lifting of the threaded rod 430 to prevent the threaded rod 430 from deviating during the lifting process. The threaded rod 430 is set to rise and fall under the drive of the guide device 500 , and at the same time drives the buffer assembly 440 to rise and fall normally, and plays a supporting role for the buffer assembly 440 .

[0030] In some embodiments of the present invention, the buffer assembly 440 includes: A receiving frame 441, the receiving frame 441 is fixed to the top of the threaded rod 430; The bearing plate 442 is slidably inserted into the top opening of the receiving frame 441 and is fixedly connected to the bearing platform 600; Spring 443 is fixed inside the receiving frame 441 and fixedly connected to the bottom of the bearing plate 442. When the bearing plate 442 descends, the spring 443 is squeezed, and the spring 443 is in a compressed state in the initial stage.

[0031] The receiving frame 441 ensures the normal installation of the spring 443 and the bearing plate 442, and guides the lifting of the bearing plate 442 to prevent the bearing plate 442 from deflecting under the action of external force. The bearing plate 442 is connected to the bearing platform 600 and the spring 443 is compressed under the weight of the bridge component, so that the spring 443 is in a compressed state in the initial stage; Through the deformation of the spring 443, the load acting on the first supporting plate 410 can be reduced, thereby reducing the load pressure acting on the steel frame structure 200. Combined with the oblique traction of the steel cable in the steel frame structure 200, the load value borne by the installed steel frame structure 200 is smaller, thereby ensuring the load stability of the steel frame structure 200 on both sides.

[0032] In some embodiments of the present invention, the guiding device 500 includes: A rotating sleeve 510, which is rotatably sleeved on the outer side of the directional sleeve 420. The rotating sleeve 510 can rotate relative to the directional sleeve 420 and will not change in height under the action of external force; Gear 520, the gear 520 is fixed on the outer side of the rotating sleeve 510 and meshes with the gear plate 340, and drives the rotating sleeve 510 to rotate under the drive of the gear plate 340; The protrusion 530 is fixed on the inner surface of the rotating sleeve 510 and is located above the directional sleeve 420 .

[0033] The rotating sleeve 510 and the gear 520 are engaged with the gear plate 340 through cooperation, and when the gear plate 340 slides, the rotating sleeve 510 and the gear 520 are driven to rotate.

[0034] In some embodiments of the present invention, the guiding device 500 further includes: The threaded sleeve 540 is rotatably sleeved on the outer side of the threaded rod 430 and installed inside the rotating sleeve 510; The limiting groove 550 is provided on the outer side of the threaded sleeve 540 , and the protrusion 530 is inserted into the limiting groove 550 . The protrusion 530 contacts the inner wall of one end of the limiting groove 550 in the initial stage.

[0035] The gear plate 340 drives the rotating sleeve 510 and the gear 520 to rotate when sliding. When the rotating sleeve 510 rotates, the protrusion 530 is driven to rotate, so that the protrusion 530 rotates from one end of the limiting groove 550 to the other end of the limiting groove 550, and contacts with the inner wall of the other end of the limiting groove 550, and drives the threaded sleeve 540 to rotate synchronously, so that the threaded sleeve 540 drives the threaded rod 430 to rise by the thread when rotating. After the height of the threaded rod 430 is adjusted, the second hydraulic cylinder 310 is started to descend and disengage from the bearing platform 600, and at the same time drives the protrusion 530 to rotate from the other end of the limiting groove 550 to one end of the limiting groove 550; The threaded sleeve 540 is set to drive the threaded rod 430 to rise and fall by the thread when rotating, and the rotating sleeve 510 also plays a role in positioning the threaded sleeve 540, so that the threaded sleeve 540 can only rotate and cannot be raised or lowered under the action of external force; Among them, the protrusion 530 and the limiting groove 550 are arranged in cooperation so that the buffer assembly 440 will not be driven to rise in the initial stage of the extension of the second hydraulic cylinder 310, and the buffer assembly 440 will be driven to descend at the same time as the second hydraulic cylinder 310 retracts and starts, thereby preventing the height of the second hydraulic cylinder 310 from affecting the slight rise and fall of the bridge components.

[0036] In some embodiments of the present invention, the carrier platform 600 includes: The platform plate 610 is fixed on the top of the load-bearing plate 442 so that the platform plate 610 can normally drag the position adjustment device 800 and the bridge components to rise and fall; The first support columns 620 are provided in two groups and are respectively fixed on both sides of the top of the platform plate 610 to support the first support columns 620; The tilting platform 630 is provided with two tilting platforms 630, and is respectively fixed at the two ends of the top of the platform plate 610, so that the height of the position adjustment device 800 changes when sliding; The receiving plate 640 is provided with two receiving plates 640 , which are respectively fixed at the top two ends of the platform plate 610 and connected to the first telescopic hydraulic cylinder 700 .

[0037] The height of the position adjusting device 800 is adjusted by setting the tilting platform 630 when the position adjusting device 800 slides, so that the position adjusting device 800 can rise to contact the bridge component, and drive the bridge component to slide by friction to adjust the position of the bridge component, and descend to disengage from the bridge component when the position adjusting device 800 is reset; The platform plate 610 and the first support column 620 are used to support the bridge component, and the bridge component is height-controlled and stable, and the bridge component is lifted and lowered, so that the position adjustment device 800 can be used normally. The receiving plate 640 is provided to ensure that the first telescopic hydraulic cylinder 700 is normally installed and fixed, so that the first telescopic hydraulic cylinder 700 can drive the position adjustment device 800 to slide during the telescopic process.

[0038] In some embodiments of the present invention, the position adjustment device 800 includes: A sliding frame 810, which is slidably placed on the top of the tilting platform 630 and rises under the action of the tilting platform 630; The hinged head 820 is fixed to one side of the sliding frame 810 and is hinged to the first telescopic hydraulic cylinder 700, and the rotation angle of the first telescopic hydraulic cylinder 700 relative to the hinged head 820 is less than 60°; The friction wheel 830 is rotatably mounted inside the sliding frame 810 and is free from friction with the bridge component; The ratchet 840 is installed at the connection between the friction wheel 830 and the sliding frame 810 so that the sliding frame 810 limits the rotation direction of the friction wheel 830 .

[0039] The sliding frame 810 and the hinged head 820 are matched to ensure the normal installation of the friction wheel 830, and the friction wheel 830 is driven to slide and adjust the position. The sliding frame 810 is in contact with the tilting platform 630, and the friction wheel 830 is driven to rise and fall when the sliding frame 810 slides. The friction wheel 830 is arranged to contact the bridge component, and when the friction wheel 830 slides with the sliding frame 810, the bridge component is driven to slide synchronously; Among them, the setting of the ratchet 840 limits the rotation of the friction wheel 830 when the friction wheel 830 slides forward and rises, so that the friction wheel 830 drives the bridge component to slide, and when the friction wheel 830 moves backward and descends, the rotation of the friction wheel 830 is released, so that the friction wheel 830 can rotate to reduce the friction with the bridge component.

[0040] In some embodiments of the present invention, the steel frame structure 200 comprises: Second support columns 210, four of which are provided and located at the four outer corners of the central load member 100; The positioning frame 220 is provided with two groups and is respectively fixed at two ends of the outer side of the second support column 210; The cross frame 230 has two ends fixedly connected to the positioning frame 220 .

[0041] The second support column 210 is provided to support the support assembly 400 and ensure the stability of the support assembly 400 when in use; The positioning frame 220 is provided to ensure the normal installation and fixation of the cross frame 230 , so that the cross frame 230 can position two adjacent second support columns 210 and ensure the stability of the second support columns 210 .

[0042] Working method of the present invention: When adjusting the height of a bridge part: Step 1: Start the second hydraulic cylinder 310, so that the second hydraulic cylinder 310 pushes the carrying platform 600 to rise, and drives the rotating sleeve 510 to rotate by driving the gear plate 340, and drives the threaded sleeve 540 to rotate after the rotating sleeve 510 rotates a certain angle, so that the threaded sleeve 540 drives the threaded rod 430 to rise synchronously; Step 2: After the height of the bridge component is adjusted, the second hydraulic cylinder 310 is started to push the carrying platform 600 downward, and the rotating sleeve 510 is driven to rotate in the opposite direction by driving the gear plate 340, so that the rotating sleeve 510 rotates to the initial state relative to the threaded sleeve 540, and the height of the threaded rod 430 is not affected; When adjusting the position of a bridge component: Step 1: Start the first telescopic hydraulic cylinder 700, so that the first telescopic hydraulic cylinder 700 drives the sliding frame 810 to move and rise along the inclined platform 630 to contact the bridge component, and the friction wheel 830 is restricted by the ratchet 840, which will drive the bridge component to slide; Step 2, start the first telescopic hydraulic cylinder 700, so that the first telescopic hydraulic cylinder 700 drives the sliding frame 810 to move, and descend along the inclined platform 630 to contact the bridge component, and the friction wheel 830 rotates in the opposite direction without being restricted by the ratchet 840, so that the friction wheel 830 rotates relative to the bridge component and will not drive the bridge component to move.

[0043] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support device for extra-large bridge construction that is easy to operate, characterized in that: include: Center load piece (100); A steel frame structure (200), wherein the steel frame structure (200) is wrapped around the outside of the central load-bearing member (100); A height driving device (300), wherein the height driving device (300) is installed on the top of the central load member (100); A support assembly (400), wherein the support assembly (400) is installed on the top of the steel frame structure (200) and is driven to rise and fall synchronously by the height driving device (300); A guiding device (500), the guiding device (500) being installed inside the supporting assembly (400) and connected to the height driving device (300); A carrying platform (600), the carrying platform (600) being installed on the top of the supporting assembly (400) and being raised and lowered under the drive of the height driving device (300); A first telescopic hydraulic cylinder (700), wherein the first telescopic hydraulic cylinder (700) is fixed on the top of the bearing platform (600); A position adjustment device (800) is installed on the top of the bearing platform (600) and drives the bridge to slide under the drive of the first telescopic hydraulic cylinder (700).

2. The easy-to-operate support device for extra-large bridge construction according to claim 1 is characterized in that: The height driving device (300) comprises: a second hydraulic cylinder (310), the second hydraulic cylinder (310) being fixed on the top of the central load member (100); A lifting support plate (320), wherein the lifting support plate (320) is fixed on the top of the second hydraulic cylinder (310) and connected to the bearing platform (600); A force application plate (330), wherein two force application plates (330) are provided and are respectively hinged to two ends of the bottom of the lifting support plate (320).

3. The easy-to-operate support device for extra-large bridge construction according to claim 2 is characterized in that: The height driving device (300) further comprises: A gear plate (340), wherein the gear plate (340) is hinged to an end of the force application plate (330) away from the lifting support plate (320); A limiting frame (350) is fixed on the top of the supporting assembly (400) and is used to limit the gear plate (340).

4. The easy-to-operate support device for extra-large bridge construction according to claim 3 is characterized in that: The support assembly (400) comprises: A first receiving plate (410), wherein the first receiving plate (410) is fixed on the top of the steel frame structure (200); Orienting sleeves (420), a plurality of the orienting sleeves (420) are provided and fixed on the top of the first receiving plate (410), and correspond one to one with the height driving devices (300); A threaded rod (430), wherein the threaded rod (430) is inserted into the top of the directional sleeve (420) in a liftable manner; A buffer assembly (440) is fixed on the top of the threaded rod (430).

5. The easy-to-operate supporting device for extra-large bridge construction according to claim 4 is characterized in that: The buffer component (440) comprises: A receiving frame (441), wherein the receiving frame (441) is fixed on the top of the threaded rod (430); A load-bearing plate (442), the load-bearing plate (442) being slidably plugged into the top opening of the receiving frame (441) and connected to the bearing platform (600); A spring (443), wherein the spring (443) is fixed inside the receiving frame (441) and is fixedly connected to the bottom of the bearing plate (442).

6. The easy-to-operate supporting device for extra-large bridge construction according to claim 5 is characterized in that: The guiding device (500) comprises: A rotating sleeve (510), wherein the rotating sleeve (510) is rotatably sleeved on the outer side of the directional sleeve (420); A gear (520), wherein the gear (520) is fixed to the outside of the rotating sleeve (510) and meshes with the gear plate (340); A protrusion (530) is fixed on the inner surface of the rotating sleeve (510) and is located above the directional sleeve (420).

7. The easy-to-operate support device for extra-large bridge construction according to claim 6 is characterized in that: The guiding device (500) further comprises: A threaded sleeve (540), the threaded sleeve (540) being rotatably sleeved on the outside of the threaded rod (430) and installed inside the rotating sleeve (510); A limiting groove (550) is provided on the outside of the threaded sleeve (540), and the protrusion (530) is inserted into the inside of the limiting groove (550).

8. The easy-to-operate support device for extra-large bridge construction according to claim 7 is characterized in that: The carrying platform (600) comprises: A platform plate (610), wherein the platform plate (610) is fixed on the top of the load-bearing plate (442); First support columns (620), wherein two groups of the first support columns (620) are provided and are respectively fixed on both sides of the top of the platform plate (610); An inclined platform (630), wherein two inclined platforms (630) are provided and are respectively fixed at two ends of the top of the platform plate (610); A receiving plate (640), wherein two receiving plates (640) are provided and are respectively fixed to the top two ends of the platform plate (610) and are connected to the first telescopic hydraulic cylinder (700).

9. The easy-to-operate supporting device for extra-large bridge construction according to claim 8 is characterized in that: The position adjustment device (800) comprises: A sliding frame (810), the sliding frame (810) being slidably placed on the top of the inclined platform (630); An articulated head (820), the articulated head (820) being fixed to one side of the sliding frame (810) and being articulated to the first telescopic hydraulic cylinder (700); A friction wheel (830), wherein the friction wheel (830) is rotatably mounted inside the sliding frame (810); A ratchet wheel (840) is installed at the connection between the friction wheel (830) and the sliding frame (810).

10. The easy-to-operate supporting device for extra-large bridge construction according to claim 9 is characterized in that: The steel frame structure (200) comprises: Second support columns (210), four of which are provided and located at four outer corners of the central load member (100); Positioning frames (220), wherein two groups of the positioning frames (220) are provided and are respectively fixed to two ends of the outer side of the second supporting column (210); A cross frame (230), both ends of the cross frame (230) are fixedly connected to the positioning frame (220).

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