Overpass steel box girder pushing device

Abstract

The utility model relates to the technical field of viaduct construction, in particular to a viaduct steel box girder pushing device which comprises a base, four hydraulic lifting rods are fixedly connected to the lower surface of the base, a pushing mechanism is arranged on the upper surface of the base and comprises three hydraulic rods, and the three hydraulic rods are all installed on the upper surface of the base. The output ends of the three hydraulic rods are fixedly connected with a push plate, the inner wall of the push plate is rotationally connected with a rotating plate, the other end of the rotating plate is rotationally connected with a placing table, two mounting boxes are mounted on the upper surface of the base, and the inner walls of the two mounting boxes are rotationally connected with a plurality of limiting wheels; an adjusting device is arranged on the upper surface of the base and comprises a gear, and the gear is rotationally connected to the upper surface of the base. According to the utility model, the problem that the movement of the placing table is affected due to inaccurate resetting of the limiting wheel which is often caused by a mode of moving the limiting wheel by using a hydraulic rod is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of viaduct construction, in particular to a viaduct steel box girder jacking device. Background Art

[0002] Steel box girder refers to a steel plate box girder, which is usually used in large-span bridge projects. It has the characteristics of light weight, high quality and structural safety. It can be used in the construction of viaducts. When installing the steel box girder, it is often necessary to use a jacking device to adjust the position of the steel box girder to ensure the installation effect of the steel box girder.

[0003] A Chinese patent with publication number CN217128033U discloses a hydraulic jacking device for steel box girders, the main points of its technical solution are: it includes a hydraulic jacking platform and a pushing mechanism arranged on the hydraulic jacking platform, the pushing mechanism includes a slider, a driving mechanism and a guiding mechanism, the output end of the driving mechanism is hinged to the slider, the guiding mechanism includes two symmetrically arranged guiding groups, the guiding group includes a mounting frame, a mounting plate, a plurality of guiding rods arranged on the mounting plate and a hydraulic cylinder connected to the mounting frame. The utility model is provided with a guiding mechanism, which can guide the slider, and by arranging a plurality of guiding rods of different heights, the slider and the supporting platform can move on a circular arc line, so that it is suitable for jacking operations of steel box girders on arc-shaped channels of high-speed and viaduct gates. Compared with the common jacking equipment in the prior art, the utility model can share the extrusion force on the guide beam of the steel box girder, effectively prevent the deformation of the guide beam, and improve the construction accuracy.

[0004] The existing related technologies often have the following defects: when using a steel box girder pushing device to push a viaduct, the following steps are usually included, namely, lifting, moving and lowering. When using the steel box girder pushing device to move the viaduct in a straight line, it is necessary to move the limiting wheel away from the placing platform. In the prior art, the method of using a hydraulic rod to move the limiting wheel often easily leads to inaccurate resetting of the limiting wheel, thereby affecting the movement of the placing platform.

[0005] Therefore, the utility model provides a viaduct steel box girder jacking device. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that the limiting wheel is moved by a hydraulic rod, which often leads to inaccurate resetting of the limiting wheel, thus affecting the movement of the placing platform, and proposes a jacking device for a viaduct steel box girder.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a jacking device for a steel box girder of an elevated bridge, comprising a base, the lower surface of the base is fixedly connected with four hydraulic lifting rods, the upper surface of the base is provided with a pushing mechanism, the pushing mechanism comprises three hydraulic rods, the three hydraulic rods are all installed on the upper surface of the base, the output ends of the three hydraulic rods are fixedly connected with a pushing plate, the inner wall of the pushing plate is rotatably connected with a rotating plate, the other end of the rotating plate is rotatably connected with a placing table, two installation boxes are installed on the upper surface of the base, the inner walls of the two installation boxes are rotatably connected with a plurality of limiting wheels, the upper surface of the base is provided with an adjusting device, the adjusting device comprises a gear, the gear is rotatably connected to the upper surface of the base, and the two installation boxes are respectively fixedly connected with a first tooth plate and a second tooth plate on one side close to the gear.

[0008] The effects achieved by the above components are: the gear is rotatably connected to the base, ensuring that the gear can rotate. By setting the gear, the first tooth plate and the second tooth plate can be controlled to move, thereby controlling the two installation boxes to move closer to or away from each other.

[0009] Preferably, a motor is fixedly connected to the upper surface of the base, a rotating rod is fixedly connected to the output end of the motor, and the other end of the rotating rod is fixedly connected to a gear.

[0010] The effects achieved by the above components are: by setting a motor, the rotating rod can be controlled to rotate, and the rotation of the rotating rod can drive the gear to rotate.

[0011] Preferably, a first limit plate is fixedly connected to a side of the first tooth plate close to the second tooth plate, and a second limit plate is fixedly connected to a side of the second tooth plate close to the rotating plate.

[0012] The effect achieved by the above components is that the rotation of the rotating plate can be limited by setting the first limiting plate and the second limiting plate.

[0013] Preferably, two sliding grooves are provided on one side of the base close to the first limit plate, and the surfaces of the sliding grooves on the two bases are slidably connected with sliders, the upper surfaces of the sliders are fixedly connected to the installation box, and four "U"-shaped plates are fixedly connected to one side of the base close to the first tooth plate and the second tooth plate.

[0014] The effects achieved by the above components are: by setting the slider, the connection between the installation box and the base is ensured while the installation box can be moved, and by setting the "U"-shaped plate, the positions of the first tooth plate and the second tooth plate can be restricted.

[0015] Preferably, a moving device is provided on the lower surface of the base, and the moving device includes four universal wheels, and the four universal wheels are fixedly connected to the lower surface of the base, and two mounting plates are fixedly connected to the side of the base, and the upper surfaces of the two mounting plates are fixedly connected to sleeve rods.

[0016] The effects achieved by the above components are: by arranging the universal wheel, the base can be moved; by arranging the mounting plate, the sleeve rod can be connected to the base; and by arranging the sleeve rod, the movement of the base can be controlled.

[0017] Preferably, the inner wall of the sleeve rod is slidably connected to a sliding rod, and one end of the sliding rod away from the mounting plate is fixedly connected to a connecting plate.

[0018] The effects achieved by the above components are: by setting the sleeve rod, the slide rod can be installed on the mounting plate, the slide rod slidably connected to the inner wall of the sleeve rod can move, and by setting the connecting plate, the movement of the slide rod can be conveniently controlled.

[0019] Preferably, one end of the sliding rod close to the mounting plate is fixedly connected to a spring, and the other end of the spring is fixedly connected to the sleeve rod.

[0020] The effect achieved by the above components is: by setting the spring, the position of the slide bar can be limited, and at the same time, it is ensured that the slide bar can automatically return to the original position after moving.

[0021] In summary:

[0022] 1. In the utility model, by setting an adjustment device, the position of the installation box can be adjusted, thereby the position of the limiting wheel can be adjusted, so that when there is no need to offset the angle of the viaduct, the restriction of the limiting wheel on the position of the placing table can be released, and at the same time, it is ensured as much as possible that when the angle of the viaduct needs to be offset, the limiting wheel can be accurately reset, and the movement of the placing table is avoided as much as possible. By setting a motor, the rotating rod can be controlled to rotate, and the rotation of the rotating rod can drive the gear to rotate. The rotation of the gear can control the first tooth plate and the second tooth plate to move, thereby controlling the two installation boxes to move closer or farther from each other.

[0023] 2. In the utility model, by setting a moving device, the position of the steel box girder pushing device can be moved and adjusted, thereby simplifying the movement process of the steel box girder pushing device by the staff when the steel box girder pushing device needs to be installed, and by setting universal wheels, the base can be moved, and by setting a connecting plate, the sliding rod can be controlled, thereby controlling the movement of the installation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 This is a schematic structural diagram of the utility model from another angle;

[0026] Figure 3 For this utility model Figure 1 Schematic diagram of the local structure;

[0027] Figure 4 This is a structural schematic diagram of the installation box of the utility model;

[0028] Figure 5 For this utility model Figure 2 A magnified image of point A;

[0029] Figure 6 It is a structural schematic diagram of the sliding rod of the utility model.

[0030] Legend: 1. Base; 2. Hydraulic lifting rod; 3. Pushing mechanism; 31. Hydraulic rod; 32. Push plate; 4. Turntable; 5. Placement table; 6. Installation box; 7. Limiting wheel; 8. Adjusting device; 81. Motor; 82. Turntable; 83. Gear; 84. First tooth plate; 85. Second tooth plate; 86. "U"-shaped plate; 87. First limiting plate; 88. Second limiting plate; 89. Slider; 9. Moving device; 91. Universal wheel; 92. Installation plate; 93. Sleeve rod; 94. Sliding rod; 95. Connecting plate; 96. Spring. DETAILED DESCRIPTION

[0031] Reference Figure 1 As shown, the utility model provides a technical solution: a jacking device for a viaduct steel box girder, comprising a base 1, four hydraulic lifting rods 2 are fixedly connected to the lower surface of the base 1, a pushing mechanism 3 is provided on the upper surface of the base 1, the pushing mechanism 3 comprises three hydraulic rods 31, the three hydraulic rods 31 are all installed on the upper surface of the base 1, the output ends of the three hydraulic rods 31 are fixedly connected to a push plate 32, the inner wall of the push plate 32 is rotatably connected to a rotating plate 4, the other end of the rotating plate 4 is rotatably connected to a placing table 5, two installation boxes 6 are installed on the upper surface of the base 1, the inner walls of the two installation boxes 6 are rotatably connected to a plurality of limiting wheels 7, an adjusting device 8 is provided on the upper surface of the base 1, and a moving device 9 is provided on the lower surface of the base 1.

[0032] The specific settings and functions of the adjusting device 8 and the moving device 9 are described in detail below.

[0033] Reference Figure 1-Figure 4As shown, in this embodiment: the adjusting device 8 includes a gear 83, which is rotatably connected to the upper surface of the base 1, and the first tooth plate 84 and the second tooth plate 85 are fixedly connected to the sides of the two installation boxes 6 close to the gear 83. The gear 83 is rotatably connected to the base 1, ensuring that the gear 83 can rotate. By setting the gear 83, the first tooth plate 84 and the second tooth plate 85 can be controlled to move, thereby controlling the two installation boxes 6 to move closer to or away from each other. The upper surface of the base 1 is fixedly connected with a motor 81, and the output end of the motor 81 is fixedly connected with a rotating rod 82, and the other end of the rotating rod 82 is fixedly connected to the gear 83. By setting the motor 81, the rotating rod 82 can be controlled to rotate, and the rotation of the rotating rod 82 can drive the gear 83 to rotate.

[0034] A first limit plate 87 is fixedly connected to the side of the first tooth plate 84 close to the second tooth plate 85, and a second limit plate 88 is fixedly connected to the side of the second tooth plate 85 close to the rotating plate 4. By setting the first limit plate 87 and the second limit plate 88, the rotation of the rotating plate 4 can be limited. Two slide grooves are provided on the side of the base 1 close to the first limit plate 87, and the surfaces of the slide grooves on the two bases 1 are slidably connected with sliders 89, and the upper surfaces of the sliders 89 are fixedly connected to the installation box 6. Four "U"-shaped plates 86 are fixedly connected to the side of the base 1 close to the first tooth plate 84 and the second tooth plate 85. By setting the sliders 89, the connection between the installation box 6 and the base 1 is ensured while the installation box 6 can be moved. By setting the "U"-shaped plates 86, the positions of the first tooth plate 84 and the second tooth plate 85 can be limited.

[0035] Reference Figure 2 and Figure 5 as well as Figure 6 As shown, specifically, the moving device 9 includes four universal wheels 91, and the four universal wheels 91 are fixedly connected to the lower surface of the base 1. Two mounting plates 92 are fixedly connected to the side of the base 1, and the upper surfaces of the two mounting plates 92 are fixedly connected to sleeve rods 93. By providing the universal wheels 91, the base 1 can be moved, and by providing the mounting plates 92, the sleeve rods 93 can be connected to the base 1, and by providing the sleeve rods 93, the movement of the base 1 can be controlled.

[0036] The inner wall of the sleeve rod 93 is slidably connected with a slide bar 94, and one end of the slide bar 94 away from the mounting plate 92 is fixedly connected with a connecting plate 95. By setting the sleeve rod 93, the slide bar 94 can be installed on the mounting plate 92, and the slide bar 94 slidably connected to the inner wall of the sleeve rod 93 can move. By setting the connecting plate 95, the movement of the slide bar 94 can be conveniently controlled. A spring 96 is fixedly connected to one end of the slide bar 94 close to the mounting plate 92, and the other end of the spring 96 is fixedly connected to the sleeve rod 93. By setting the spring 96, the position of the slide bar 94 can be limited, and at the same time, it is ensured that the slide bar 94 can automatically return to the original position after moving.

[0037] Working principle, when using the steel box girder pushing device to push the viaduct, first move the viaduct to the placement platform 5, then start the hydraulic lifting rod 2 to adjust the height of the base 1, and then start the hydraulic rod 31 of the pushing mechanism 3, so that the hydraulic rod 31 drives the push plate 32 to move the position of the placement platform 5 through the rotating plate 4, thereby moving the viaduct on the placement platform 5. After the viaduct is moved, start the hydraulic lifting rod 2 again to move the placement platform 5 away from the viaduct. By setting the installation box 6, the limiting wheel 7 can be installed. By setting the limiting wheel 7, the moving trajectory of the placement platform 5 can be limited when the angle of the viaduct needs to be offset. When the angle of the viaduct does not need to be offset, the motor 81 is started to drive the rotating rod 82 to rotate. The rotation of the rotating rod 82 can drive the gear 83 to rotate on the surface of the base 1, thereby driving the first tooth plate 84 and the second tooth plate 85 to slide on the inner wall of the "U"-shaped plate 86. The movement of the first tooth plate 84 and the second tooth plate 85 can drive the two installation boxes 6 to move away from each other. At this time, the slider 89 slides on the inner wall of the base 1, so that the limiting wheel 7 moves away from the placement table 5. In the process of moving the installation box 6, the movement of the first tooth plate 84 and the second tooth plate 85 respectively drives the first The limit plate 87 and the second limit plate 88 move close to the rotating plate 4, thereby ensuring as much as possible that the rotating plate 4 will not rotate during the moving of the placement table 5. By setting the adjustment device 8, the position of the installation box 6 can be adjusted, so that the position of the limit wheel 7 can be adjusted, so that when there is no need to offset the angle of the viaduct, the restriction of the position of the placement table 5 by the limit wheel 7 can be released. At the same time, it is ensured as much as possible that when the angle of the viaduct needs to be offset, the limit wheel 7 can be accurately reset, avoiding affecting the movement of the placement table 5 as much as possible.

[0038] When the steel box girder pushing device is needed, it is first necessary to move the steel box girder pushing device to the position where the steel box girder pushing device is to be installed, pull the connecting plate 95 to drive the slide rod 94 to slide on the inner wall of the sleeve rod 93, and then pull the connecting plate 95 to drive the base 1 to move. Under the action of the universal wheel 91, the position of the steel box girder pushing device can be adjusted. After the position of the steel box girder pushing device is adjusted, loosen the connecting plate 95, and under the action of the elastic force of the spring 96, the slide rod 94 moves close to the installation plate 92. By setting the moving device 9, the position of the steel box girder pushing device can be moved and adjusted, thereby simplifying the moving process of the steel box girder pushing device for the staff when the steel box girder pushing device needs to be installed.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A viaduct steel box girder pushing device, comprising a base (1), the lower surface of the base (1) is fixedly connected with four hydraulic lifting rods (2), the upper surface of the base (1) is provided with a pushing mechanism (3), the pushing mechanism (3) comprises three hydraulic rods (31), the three hydraulic rods (31) are all installed on the upper surface of the base (1), the output ends of the three hydraulic rods (31) are fixedly connected with a pushing plate (32), the inner wall of the pushing plate (32) is rotatably connected with a rotating plate (4), the other end of the rotating plate (4) is rotatably connected with a placing table (5), the upper surface of the base (1) is provided with two installation boxes (6), the inner walls of the two installation boxes (6) are rotatably connected with a plurality of limiting wheels (7), the upper surface of the base (1) is provided with an adjusting device (8), characterized in that: The adjusting device (8) comprises a gear (83) which is rotatably connected to the upper surface of the base (1); a first toothed plate (84) and a second toothed plate (85) are respectively fixedly connected to one side of the two mounting boxes (6) close to the gear (83).

2. The device for pushing up a viaduct steel box girder according to claim 1, characterized in that: A motor (81) is fixedly connected to the upper surface of the base (1); a rotating rod (82) is fixedly connected to the output end of the motor (81); and the other end of the rotating rod (82) is fixedly connected to a gear (83).

3. The device for pushing up a viaduct steel box girder according to claim 1, characterized in that: A first limit plate (87) is fixedly connected to a side of the first tooth plate (84) close to the second tooth plate (85), and a second limit plate (88) is fixedly connected to a side of the second tooth plate (85) close to the rotating plate (4).

4. The device for pushing up a viaduct steel box girder according to claim 3 is characterized in that: Two slide grooves are provided on one side of the base (1) close to the first limit plate (87), and the surfaces of the slide grooves on the two bases (1) are slidably connected with sliders (89), and the upper surfaces of the sliders (89) are fixedly connected to the installation box (6). Four "U"-shaped plates (86) are fixedly connected to one side of the base (1) close to the first tooth plate (84) and the second tooth plate (85).

5. The device for pushing up a viaduct steel box girder according to claim 1, characterized in that: A moving device (9) is provided on the lower surface of the base (1), and the moving device (9) comprises four universal wheels (91), and the four universal wheels (91) are fixedly connected to the lower surface of the base (1); two mounting plates (92) are fixedly connected to the side of the base (1), and the upper surfaces of the two mounting plates (92) are fixedly connected to sleeve rods (93).

6. The device for pushing up a viaduct steel box girder according to claim 5, characterized in that: The inner wall of the sleeve rod (93) is slidably connected to a slide rod (94), and one end of the slide rod (94) away from the mounting plate (92) is fixedly connected to a connecting plate (95).

7. The device for pushing up a viaduct steel box girder according to claim 6, characterized in that: One end of the slide rod (94) close to the mounting plate (92) is fixedly connected to a spring (96), and the other end of the spring (96) is fixedly connected to the sleeve rod (93).

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