Position adjusting device for box girder pushing

Abstract

The application discloses a position adjusting device for box girder pushing, and relates to the related technical field of box girder pushing, which comprises an H-shaped steel, box girder bases are fixedly installed at the top of the H-shaped steel, and installation grooves are formed in the top of the H-shaped steel; a supporting table is inserted into the installation grooves and rotates under the driving of a driving device; the setting of guide rails plays a guiding role in the sliding of hydraulic jacks, the hydraulic jacks drive the steel bridge road to move along a certain track, the moving direction of the hydraulic jacks can be adjusted through the rotating guide rails in the process of adjusting the position, the steel bridge road does not need to be put down in the adjusting process, the rotation of the guide rails is not affected by the position of the hydraulic jacks, the hydraulic jacks are not rotated when the guide rails rotate, the hindering force of the guide rails when rotating is reduced, and the adjusting time is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the related technical field of box girder pushing, in particular to a position adjusting device for box girder pushing. BACKGROUND

[0002] The existing steel box girder installation methods include support installation, cantilever assembly and pushing installation, wherein the support installation refers to erecting support at the bridge site, and using tower crane, automobile crane or floating crane and other ground or water lifting equipment to hoist and install the steel box girder section by section, which is simple and reliable, and the steel box girder does not need to be adjusted after being installed, and is suitable for land or water environment with good bridge site and easy support erection, but is not suitable for engineering with complex ground conditions or cross-line traffic demand; the cantilever assembly refers to installing the steel box girder by using the bridge deck crane which can move on the steel bridge deck, each section of the steel box girder is transported to the bridge by the beam transport vehicle, and is installed by the bridge deck crane, after the welding and reinforcement are completed, the bridge deck crane moves forward, and the next section is installed, which is suitable for cable-stayed bridge with large span and small horizontal curve, and is not suitable for steel bridge construction with small radius curve; the steel box girder pushing method refers to assembling the girder section by section at the bridge head, and using the jack to push longitudinally, so that the girder is installed on the temporary sliding support surface of the pier top or local support, which is suitable for large-span equal-section continuous bridge, especially for complex valley environment and cross-line traffic demand engineering.

[0003] The pushing installation is mostly suitable for complex valley environment, and the moving direction of the box girder pushing needs to be adjusted to avoid the misalignment caused by the assembly of the steel bridge road construction, and the existing box girder pushing adjustment is usually adjusted by changing the moving direction of the jack multiple times, and the support of the steel bridge road needs to be removed when the moving direction is changed, and another jack is used for adjustment, which wastes time in the state of one-way and return adjustment, and the alignment effect is not ideal at a long distance, and the adjustment needs to be found out after being close, and the scratching phenomenon is prone to occur when the bridge road is a curved or inclined part.

[0004] Therefore, it is necessary to invent a position adjusting device for box girder pushing to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a position adjusting device for box girder pushing to solve the problems in the background art.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a position adjusting device for box girder pushing, comprising:

[0007] An H-shaped steel, box girder bases are fixedly installed at the top of both ends of the H-shaped steel, and an installation groove is formed in the top of the H-shaped steel;

[0008] A support platform is inserted into the interior of a mounting groove and rotates under the drive of a drive device fixed to the top of an H-beam.

[0009] A load-bearing component, which is rotatably mounted inside the support platform;

[0010] The guide rail is fixed inside the load-bearing component and guides the sliding of the hydraulic jack. It forms a structure in which the guide rail rotates around the hydraulic jack when subjected to external force, thus guiding the direction and position of the hydraulic jack's movement.

[0011] Two adjustment devices are connected inside the support platform and connected to the guide rail through the guide rail support seat, forming a structure in which the adjustment device drives the guide rail to rotate and adjust the angle during the extension and retraction process.

[0012] A sliding bracket is slidably installed inside the guide rail and sleeved on the outside of the hydraulic jack, forming a structure in which the sliding bracket drives the hydraulic jack to move under the action of external force.

[0013] Multiple telescopic extrusion components are evenly distributed along the circumference of the support platform. The telescopic extrusion components are fixed inside the support platform and in contact with the load-bearing components.

[0014] Optionally, the support platform includes an outer ring, a sliding seat, and a gear ring. The sliding seat is fixed inside the outer ring and inserted into the mounting groove, rotating inside the mounting groove. The gear ring is fixed to the upper outer side of the outer ring and meshes with the drive device.

[0015] Optionally, the load-bearing component includes an inner ring, a guide cylinder, a hydraulic telescopic rod, and a first joint; the inner ring is rotatably installed inside the outer ring, the guide cylinder is fixed to the outside of the inner ring, the hydraulic telescopic rod is fixed inside the guide cylinder and extends into the inside of the guide rail, and the first joint is fixed to the hydraulic telescopic rod and fixedly connected to the sliding bracket, and drives the sliding bracket to slide and change position when the hydraulic telescopic rod extends or retracts.

[0016] Optionally, the sliding bracket includes a square frame, a junction plate, a positioning plate, and an angle indicator. The square frame is slidably installed inside the guide rail and drives the hydraulic jack to move along the guide rail under the extension and retraction of the hydraulic telescopic rod. Both the square frame and the positioning plate have insertion holes in their middle sections. The hydraulic jack passes through the insertion holes from top to bottom. The junction plate is fixed to the outside of the square frame and is fixedly connected to the first junction joint. The angle indicator is located on the outside of the hydraulic jack.

[0017] Optionally, the angle indicating device comprises an L-shaped column, a pointer, a fixed sleeve and a scale; the L-shaped column is fixed on the outside of the positioning pressing plate and extends upward, the pointer is fixed on the top of the L-shaped column and extends above the scale, the fixed sleeve is fixed on the outside of the hydraulic jack, and the scale is marked on the top of the fixed sleeve to form a structure that when the positioning pressing plate rotates relative to the hydraulic jack, the scale pointed by the pointer also changes.

[0018] Optionally, the adjusting device comprises an electric telescopic rod, an interface column and a second interface head; the interface column is fixed on the top of the sliding seat, the electric telescopic rod is connected to the outside of the interface column, and the second interface head is fixed on the end of the electric telescopic rod away from the interface column and connected to the outside of the guide rail support seat, so that the electric telescopic rod drives the guide rail to adjust the angle of the hydraulic jack in a circular manner, and the center of the circle changes position along with the movement of the hydraulic jack.

[0019] Optionally, the guide rail support seat comprises a first support seat, a second support seat and a support column; the first support seat and the second support seat are respectively fixed on the two ends of the bottom of the guide rail, the support column is fixed in the first support seat and passes through the second interface head to support the first support seat, and the bottom of the first support seat and the second support seat is rotatably provided with a plurality of first ball bearings, and the plurality of first ball bearings are evenly distributed in a rectangular array.

[0020] Optionally, a support pad plate is rotatably installed on the top of the hydraulic jack, a sliding column is fixedly installed on the bottom of the hydraulic jack, the sliding column passes through the guide rail downward, the sliding column is adapted to reduce the pressure of the hydraulic jack on the guide rail, and the bottom of the sliding column is rotatably provided with a second ball bearing in contact with the sliding seat.

[0021] Optionally, the driving device comprises a driving motor and a gear; the driving motor is fixed on the top of the H-shaped steel, and the gear is fixed on the output end of the driving motor and rotates under the driving of the driving motor.

[0022] The technical effects and advantages of the present application are as follows:

[0023] 1、The present application sets the guide rail to guide the sliding of the hydraulic jack, so that the hydraulic jack drives the steel bridge road to move along a certain track, and the moving direction of the hydraulic jack can be adjusted by rotating the guide rail during the adjustment of the position, without the need to lower the steel bridge road, the rotation of the guide rail will not be affected by the position of the hydraulic jack, and the hydraulic jack will not be rotated during the rotation of the guide rail, thereby reducing the resistance of the guide rail during the rotation and saving the adjustment time.

[0024] 2、The present application can fix the inner ring through the setting of the telescopic extrusion piece, and can eccentrically arrange the inner ring through different telescopic amounts of the telescopic extrusion piece, so as to realize the adjustment of the guide rail at any position, and ensure the stability of the inner ring when the inner ring is stressed, so that the inner ring cannot be deviated under the interaction force.

[0025] 3、The present application can limit the rotation angle of the guide rail through the cooperation of the scale and the pointer, facilitate the control of the rotation angle of the guide rail, and ensure the accuracy of the guide rail when being reset, so as to avoid the deviation of the guide rail when being adjusted or reset, and affect the splicing and assembly of the steel bridge road.

[0026] 4、The present application supports the hydraulic jack through the setting of the sliding column, so that the acting force of the hydraulic jack is not all applied on the guide rail, the guide rail is prevented from being damaged under the action of external force, and the resistance force of the guide rail when rotating is reduced, so as to facilitate the rotation of the guide rail. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a main view schematic diagram of the present application structure;

[0028] Figure 2 It is a main view schematic diagram of the present application structure; Figure 1

[0029] Figure 3 It is a support table structure schematic diagram of the present application;

[0030] Figure 4 It is a sliding column structure schematic diagram of the present application;

[0031] Figure 5 It is a sliding support structure schematic diagram of the present application;

[0032] Figure 6 It is a main view schematic diagram of the present application structure; Figure 5

[0033] Figure 7 It is a guide rail support seat structure schematic diagram of the present application.

[0034] In the figure: 1, H-shaped steel; 2, box girder base; 3, mounting groove; 4, guide rail; 5, hydraulic jack; 6, telescopic extrusion piece; 7, outer ring; 8, sliding seat; 9, gear ring; 10, guide cylinder; 11, hydraulic telescopic rod; 12, first joint; 13, square frame; 14, joint plate; 15, positioning pressing plate; 16, L-shaped column; 17, pointer; 18, fixed sleeve; 19, scale; 20, electric telescopic rod; 21, joint column; 22, second joint; 23, first support seat; 24, second support seat; 25, support column; 26, first ball; 27, sliding column; 28, second ball; 29, driving motor; 30, gear; 31, inner ring; 32, support pad.​​ DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0036] The present application provides a position adjusting device for box girder pushing, as shown in Figures 1-7 The present application provides a position adjusting device for box girder pushing, as shown in

[0037] The top of the H-shaped steel 1 is fixedly provided with a box girder base 2 at both ends, and the top of the H-shaped steel 1 is provided with a mounting groove 3; the support table is inserted into the inside of the mounting groove 3 and rotates under the driving of the driving device, and the driving device is fixed to the top of the H-shaped steel 1; the force-bearing assembly is rotatably installed in the inside of the support table; the guide rail 4 is fixed in the inside of the force-bearing assembly and plays a guiding role for the sliding of the hydraulic jack 5, and forms a structure that the guide rail 4 rotates with the hydraulic jack 5 as the center under external force, guiding the moving direction and position of the hydraulic jack 5; the adjusting device is connected in the inside of the support table and connected with the guide rail 4 through the guide rail support seat, forming a structure that the adjusting device drives the guide rail 4 to rotate and adjust the angle in the process of extension and contraction; the sliding bracket is slidably installed in the inside of the guide rail 4 and sleeved on the outside of the hydraulic jack 5, forming a structure that the sliding bracket drives the hydraulic jack 5 to move under the action of external force; the plurality of telescopic extrusion pieces 6 are evenly distributed along the circumference of the support table, and the telescopic extrusion pieces 6 are fixed in the inside of the support table and in contact with the force-bearing assembly.

[0038] In this embodiment, the guide rail 4 is provided to guide the sliding of the hydraulic jack 5, so that the hydraulic jack 5 drives the steel bridge road to move along a certain trajectory, and the moving direction of the hydraulic jack 5 can be adjusted by rotating the guide rail 4 in the process of adjusting the position, and the steel bridge road does not need to be lowered during the adjustment process, and the rotation of the guide rail 4 will not be affected by the position of the hydraulic jack 5, and the hydraulic jack 5 will not be rotated during rotation, thereby reducing the resistance of the guide rail 4 during rotation and saving the adjustment time;

[0039] The box girder base 2 and the H-shaped steel 1 support the steel bridge road to ensure the stability of the steel bridge road after splicing, and the mounting groove 3 provides a certain space for the installation of the device;

[0040] The setting of the telescopic extrusion piece 6 can fix the load bearing assembly, and the different telescopic amounts of the telescopic extrusion piece 6 can make the load bearing assembly eccentrically arranged, so as to realize the adjustment of the guide rail 4 at any position, and ensure the stability of the load bearing assembly when the load bearing assembly is stressed, so that the load bearing assembly cannot be deviated under the interaction force.

[0041] In some embodiments of the present application, with reference to Figure 3 , the support table comprises an outer ring 7, a sliding seat 8 and a gear ring 9, the sliding seat 8 is fixed inside the outer ring 7 and inserted into the inside of the installation groove 3 and rotates in the inside of the installation groove 3, and the gear ring 9 is fixed on the outer side upper part of the outer ring 7 and engaged with the driving device.

[0042] In this embodiment, the setting of the outer ring 7 is matched with the installation groove 3, so as to limit the main body of the device within a specified range and provide space for the rotation of the device; the setting of the sliding seat 8 supports the use of the hydraulic jack 5 and increases the friction with the inner wall of the installation groove 3 when the steel bridge road is supported, so as to ensure the stability of the device and prevent the device from being affected by external force.

[0043] The setting of the gear ring 9 is matched with the driving device, so that the gear ring 9 is driven to rotate when the driving device is driven, and the gear ring 9 drives the guide rail 4 to rotate and adjust the angle.

[0044] In some embodiments of the present application, with reference to Figure 3 , the load bearing assembly comprises an inner ring 31, a guide cylinder 10, a hydraulic telescopic rod 11 and a first joint 12, the inner ring 31 is rotatably installed inside the outer ring 7, the guide cylinder 10 is fixed outside the inner ring 31, the hydraulic telescopic rod 11 is fixed inside the guide cylinder 10 and extends into the inside of the guide rail 4, and the first joint 12 is fixed on the hydraulic telescopic rod 11 and fixedly connected with the sliding support, and drives the sliding support to slide and change the position when the hydraulic telescopic rod 11 is telescoped.

[0045] In this embodiment, the setting of the inner ring 31 can ensure the fixation of the guide rail 4, and the inner ring 31 can limit the guide rail 4 to avoid the sliding of the guide rail 4 when stressed; the setting of the guide cylinder 10 can ensure the fixation of the hydraulic telescopic rod 11, so that the hydraulic telescopic rod 11 can normally move the hydraulic jack 5 when telescoped.

[0046] The setting of the first joint 12 is connected with the sliding support, so that the hydraulic telescopic rod 11 can drive the sliding support to move in the telescoping process, and the sliding support drives the hydraulic jack 5 to move along the guide rail 4.

[0047] In some embodiments of the present application, with reference to Figures 4-6The sliding support comprises a square frame 13, an interface plate 14, a positioning pressing plate 15, and an angle indicating device, the square frame 13 is slidably installed inside the guide rail 4 and drives the hydraulic jack 5 to move along the guide rail 4 under the extension and retraction of the hydraulic telescopic rod 11, the middle part of the square frame 13 and the positioning pressing plate 15 are both provided with a plug-in through hole, the hydraulic jack 5 passes through the plug-in through hole from top to bottom, the interface plate 14 is fixed on the outer side of the square frame 13 and is fixedly connected with the first interface head 12, and the angle indicating device is arranged on the outer side of the hydraulic jack 5.

[0048] The angle indicating device comprises an L-shaped column 16, a pointer 17, a fixing sleeve 18, and a scale 19, the L-shaped column 16 is fixed on the outer side of the positioning pressing plate 15 and extends upwards, the pointer 17 is fixed on the top of the L-shaped column 16 and extends above the scale 19, the fixing sleeve 18 is fixed on the outer side of the hydraulic jack 5, and the scale 19 is marked on the top of the fixing sleeve 18, so that the structure that the scale 19 pointed by the pointer 17 changes when the positioning pressing plate 15 rotates relative to the hydraulic jack 5 is formed.

[0049] In the embodiment, the square frame 13 is adapted to the guide rail 4 to limit the side surface of the hydraulic jack 5, so that the hydraulic jack 5 can only move along the predetermined track; the interface plate 14 is fixed with the first interface head 12, so that the square frame 13 can be fixed with the hydraulic telescopic rod 11, and the extension and retraction of the hydraulic telescopic rod 11 can normally drive the square frame 13 to slide.

[0050] The positioning pressing plate 15 is arranged to limit the hydraulic jack 5, so that the hydraulic jack 5 is prevented from being separated from the square frame 13 under the upward force; the plug-in through hole is arranged to be adapted to the hydraulic jack 5, so that the guide rail 4 is prevented from rotating synchronously with the hydraulic jack 5.

[0051] The scale 19 and the pointer 17 are matched to limit the rotation angle of the guide rail 4, so that the rotation angle of the guide rail 4 is conveniently controlled, the accuracy of the guide rail 4 when being reset is ensured, and the deviation of the guide rail 4 when being adjusted or reset is avoided, so as to affect the splicing and assembling of the steel bridge road;

[0052] The L-shaped column 16 is arranged to fix the pointer 17 on the square frame 13 and ensure the height of the pointer 17, so that the pointer 17 can correspond to the scale 19; the fixing sleeve 18 is arranged to be fixed with the hydraulic jack 5, so that the position of the scale 19 relative to the hydraulic jack 5 is always unchanged, and the relative position of the pointer 17 is changed when the pointer 17 rotates with the positioning pressing plate 15.

[0053] In some embodiments of the present application, reference is made to Figure 3 and Figure 4, the adjusting device comprises an electric telescopic rod 20, an interface column 21, and a second interface 22, the interface column 21 is fixed on the top of the sliding seat 8, the electric telescopic rod 20 is connected to the outside of the interface column 21, the second interface 22 is fixed on the end of the electric telescopic rod 20 away from the interface column 21 and is connected to the outside of the guide rail support seat, so that the electric telescopic rod 20 drives the guide rail 4 to adjust the angle of the hydraulic jack 5 in a circular manner, and the center of the circle changes position along with the movement of the hydraulic jack 5.

[0054] In this embodiment, the electric telescopic rod 20 is arranged to drive the guide rail 4 to rotate and adjust the angle of the guide rail 4, so as to change the moving direction of the hydraulic jack 5, and the hinged arrangement of the electric telescopic rod 20 can not be affected by the change of the rotating angle of the guide rail 4; the interface column 21 is arranged to position one end of the electric telescopic rod 20, so that the electric telescopic rod 20 can not slide at both ends at the same time during the extension and retraction, and the rotation adjustment of the electric telescopic rod 20 will not be affected; the second interface 22 is arranged to be connected with the guide rail support seat, so that the electric telescopic rod 20 can normally drive the guide rail 4 to rotate and adjust during the extension and retraction.

[0055] In some embodiments of the present application, referring to Figure 7 , the guide rail support seat comprises a first support seat 23, a second support seat 24, and a support column 25, the first support seat 23 and the second support seat 24 are respectively fixed on the bottom of the two ends of the guide rail 4, and the support column 25 is fixed in the first support seat 23 and passes through the second interface 22 to support the first support seat 23, a plurality of first rolling balls 26 are rotatably installed on the bottom of the first support seat 23 and the second support seat 24, and the plurality of first rolling balls 26 are evenly distributed in a rectangular array.

[0056] In this embodiment, the first support seat 23 and the second support seat 24 are arranged to support the two ends of the guide rail 4, so as to ensure the height of the guide rail 4 and the inner ring 31 and provide space for the extension and rotation of the electric telescopic rod 20; the support column 25 is arranged to be matched with the second interface 22, so that the force generated by the extension and retraction of the electric telescopic rod 20 can act on the guide rail 4; the first rolling ball 26 is arranged to reduce the friction between the first support seat 23, the second support seat 24 and the sliding seat 8, so as to facilitate the sliding of the first support seat 23 and the second support seat 24.

[0057] In some embodiments of the present application, referring to Figure 4 , a support pad 32 is rotatably installed on the top of the hydraulic jack 5, a sliding column 27 is fixedly installed on the bottom of the hydraulic jack 5, the sliding column 27 passes through the guide rail 4 downward, the sliding column 27 is adapted to reduce the pressure of the hydraulic jack 5 on the guide rail 4, and a second rolling ball 28 in contact with the sliding seat 8 is rotatably installed on the bottom of the sliding column 27.

[0058] In this embodiment, the hydraulic jack 5 is supported by the sliding column 27, so that the force of the hydraulic jack 5 does not fall entirely on the guide rail 4, avoiding damage to the guide rail 4 under the action of external force, and reducing the resistance force of the guide rail 4 when rotating, making the rotation of the guide rail 4 easier; the second ball bearing 28 can reduce the friction between the sliding column 27 and the sliding seat 8, reduce the external force required for the hydraulic jack 5 to move, and make the movement of the hydraulic jack 5 easier.

[0059] By setting the support plate 32 to contact the steel bridge road and lift the steel bridge road, the hydraulic jack 5 can drive the steel bridge road to move during the sliding process. At the same time, the support plate 32 is rotatable, so that the steel bridge road will not be worn during the rotation of the hydraulic jack 5.

[0060] In some embodiments of the present invention, reference is made to... Figure 1 The driving device includes a drive motor 29 and a gear 30. The drive motor 29 is fixed on the top of the H-beam 1, and the gear 30 is fixed on the output end of the drive motor 29, and drives the gear ring 9 to rotate under the drive of the drive motor 29.

[0061] In this embodiment, the drive motor 29 drives the gear 30 to rotate, and the gear 30 drives the gear ring 9 to rotate during the rotation process. This allows the guide rail 4 to be adjusted according to the tilt or curvature of the steel bridge road when it is placed, thereby reducing the adjustment range of the steel bridge road during the movement process.

[0062] The working method of this invention:

[0063] When in use, first adjust according to the inclination or curvature of the steel bridge road. Adjustment starts the drive motor 29, which drives the gear 30 to rotate. During the rotation of the gear 30, the gear ring 9 will rotate, which will drive the outer ring 7 and the sliding seat 8 to rotate synchronously. Since the inner ring 31 is clamped by the telescopic extrusion member 6, when the outer ring 7 rotates, it drives the guide rail 4 and the hydraulic jack 5 to rotate synchronously, guiding the movement direction of the hydraulic jack 5.

[0064] When adjusting the position of the steel bridge road, the steel bridge road is placed on the box girder base 2. Then, the hydraulic jack 5 is activated to lift the steel bridge road and disengage it from the box girder base 2. The hydraulic telescopic rod 11 is then activated. During the extension and retraction process, the hydraulic telescopic rod 11 pushes the square frame 13 to slide along the guide rail 4. During the sliding process of the square frame 13, the hydraulic jack 5 slides synchronously, so that the hydraulic jack 5 moves the steel bridge road through the support pad 32 to change the position of the steel bridge road.

[0065] When the angle of the guide rail 4 needs to be adjusted during the moving process, the telescopic extrusion piece 6 is started to release the positioning of the inner ring 31, and then the electric telescopic rod 20 is started according to the angle to be adjusted, so that the electric telescopic rod 20 is extended and retracted to pull the supporting column 25, so that the supporting column 25 drives the guide rail 4 to rotate around the hydraulic jack 5 as the center. Since the position of the hydraulic jack 5 is not determined, the inner ring 31 will be eccentric relative to the outer ring 7, and at the same time, the square frame 13 and the positioning pressing plate 15 are driven to rotate relative to the hydraulic jack 5 when the guide rail 4 rotates. At the same time, the positioning pressing plate 15 drives the pointer 17 to rotate through the L-shaped column 16, changes the position of the pointer 17 pointing to the scale 19, and confirms the rotation angle of the guide rail 4. When the angle of the guide rail 4 is adjusted, the telescopic extrusion piece 6 is started, and the telescopic extrusion piece 6 is extended and retracted by different amounts to clamp and fix the inner ring 31, and then the hydraulic telescopic rod 11 is started to drive the hydraulic jack 5 to continue to slide;

[0066] When a large adjustment is needed during the moving process of the steel bridge road, the hydraulic telescopic rod 11 drives the hydraulic jack 5 to move to the center position of the outer ring 7 and the inner ring 31, as above, the clamping force on the inner ring 31 is first released, and then the electric telescopic rod 20 is started to drive the guide rail 4 to rotate, and at the same time, the hydraulic jack 5 is located at the center of the outer ring 7 and the inner ring 31, so that the guide rail 4 and the inner ring 31 will not be offset relative to the outer ring 7 during rotation. Then the telescopic extrusion piece 6 is started to clamp and fix the inner ring 31.

[0067] When the steel bridge road moves to the specified position, the hydraulic jack 5 is started to drive the steel bridge road to descend and fall on the box girder base 2 for splicing.

[0068] The electrical components appearing in the text are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer.

[0069] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A position adjusting device for a box girder pushing, characterized by, The utility model relates to a position adjusting device for box girder jacking, comprising: H-shaped steel, the top of which is fixedly provided with box girder bases at both ends, and the top of which is provided with mounting grooves; Supporting table, which is inserted into the inside of the mounting grooves and rotates under the driving of the driving device fixed on the top of the H-shaped steel; Force bearing assembly, which is rotatably installed in the inside of the supporting table; Guide rail, which is fixed in the inside of the force bearing assembly and guides the sliding of the hydraulic jack, and forms a structure for guiding the moving direction and position of the hydraulic jack when the guide rail rotates around the hydraulic jack under external force; Two adjusting devices, which are connected in the inside of the supporting table and connected with the guide rail through the guide rail support seat, forming a structure for adjusting the angle of the guide rail during the extension and retraction of the adjusting device; Sliding support, which is slidably installed in the inside of the guide rail and sleeved on the outside of the hydraulic jack, forming a structure for moving the hydraulic jack under the action of external force; A plurality of telescopic extrusion pieces, which are evenly distributed along the circumference of the supporting table, are fixed in the inside of the supporting table and in contact with the force bearing assembly, The supporting table comprises an outer ring, a sliding seat and a gear ring, the sliding seat is fixed in the inside of the outer ring and inserted into the inside of the mounting grooves and rotates in the inside of the mounting grooves, and the gear ring is fixed on the upper part of the outside of the outer ring and engaged with the driving device, The force bearing assembly comprises an inner ring, a guide cylinder, a hydraulic telescopic rod and a first connector, the inner ring is rotatably installed in the inside of the outer ring, the guide cylinder is fixed on the outside of the inner ring, the hydraulic telescopic rod is fixed in the inside of the guide cylinder and extends into the inside of the guide rail, and the first connector is fixed on the hydraulic telescopic rod and fixedly connected with the sliding support and changes the position of the sliding support when the hydraulic telescopic rod extends and retracts, The sliding support comprises a square frame, a connecting plate, a positioning pressing plate and an angle indicating device, the square frame is slidably installed in the inside of the guide rail and moves the hydraulic jack along the guide rail under the extension and retraction of the hydraulic telescopic rod, the middle part of the square frame and the positioning pressing plate is provided with a plug-in through hole, the hydraulic jack passes through the plug-in through hole from top to bottom, the connecting plate is fixed on the outside of the square frame and fixedly connected with the first connector, and the angle indicating device is arranged on the outside of the hydraulic jack.

2. The position adjusting device for box girder jacking according to claim 1, wherein: The angle indicating device comprises an L-shaped column, a pointer, a fixed sleeve and a scale, the L-shaped column is fixed on the outside of the positioning pressing plate and extends upward, the pointer is fixed on the top of the L-shaped column and extends above the scale, the fixed sleeve is fixed on the outside of the hydraulic jack, and the scale is marked on the top of the fixed sleeve, forming a structure for changing the scale pointed by the pointer when the positioning pressing plate rotates relative to the hydraulic jack.

3. The position adjusting device for box girder jacking according to claim 1, wherein: The adjusting device comprises an electric telescopic rod, an interface column and a second interface head, the interface column is fixed on the top of the sliding seat, the electric telescopic rod is connected on the outside of the interface column, the second interface head is fixed on the end of the electric telescopic rod away from the interface column and connected on the outside of the guide rail support seat, forming the electric telescopic rod driving the guide rail to adjust the angle with the hydraulic jack as the center, and the center changes the position following the movement of the hydraulic jack.

4. The position adjusting device for box girder pushing according to claim 1, characterized in that: The guide rail support seat comprises a first support seat, a second support seat and a support column, the first support seat and the second support seat are respectively fixed on the bottom of the guide rail, the support column is fixed in the first support seat and passes through the second interface head to support the first support seat, the bottom of the first support seat and the second support seat are rotatably installed with a plurality of first ball bearings, and the plurality of first ball bearings are evenly distributed in a rectangular array.

5. The position adjusting device for box girder pushing according to claim 1, characterized in that: The top of the hydraulic jack is rotatably installed with a support backing plate, the bottom of the hydraulic jack is fixedly installed with a sliding column, the sliding column passes through the guide rail downward, the sliding column is adapted to reduce the pressure of the hydraulic jack on the guide rail, and the bottom of the sliding column is rotatably installed with a second ball bearing in contact with the sliding seat.

6. The position adjusting device for box girder pushing according to claim 1, characterized in that: The driving device comprises a driving motor and a gear, the driving motor is fixed on the top of the H-shaped steel, and the gear is fixed on the output end of the driving motor and rotates under the driving of the driving motor.

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