Modularized jacking device adopting lower jacking method

Abstract

A modular jacking device adopting a lower jacking method comprises a jacking platform, a jack, a conversion cushion block and a tool type cushion block, the jacking platform is a hollow frame body, a round hole is formed in the middle of the top face of the jacking platform, the jack is placed in a cavity of the jacking platform, and a jacking core of the jack freely extends out of the round hole in the top face of the jacking platform. The pair of conversion cushion blocks is placed on the top face of the jacking platform, a gap is reserved between the pair of conversion cushion blocks, and the conversion cushion blocks jack the tool type cushion blocks for temporary supporting. The bridge jacking device reduces high-altitude operation to the maximum extent, improves bridge jacking construction efficiency and precision, and is safe, reliable and convenient to construct. And meanwhile, the device is high in modularization degree, good in universality and capable of being repeatedly used, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge jacking construction, in particular to a modular jacking device using a bottom-up method. Background Art

[0002] During bridge construction, due to restrictions on underpass clearance or navigation requirements, more and more bridge construction is being conducted off-site, then transported to the bridge site using transportation equipment and placed on the bridge using jacking equipment. However, traditional jacking methods often involve top-up construction, which involves extensive overhead work and carries significant safety risks. Bottom-up construction involves less overhead work, but traditional bottom-up construction suffers from poor stability during jacking. Summary of the Invention

[0003] The utility model aims to solve the deficiencies of the prior art and provide a modular jacking device with good stability using a bottom-up method.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A modular jacking device using a bottom-up method includes a jacking platform, a jack, a conversion pad and a tool-type pad. The jacking platform is a hollow frame with a circular hole in the middle of the top surface of the jacking platform. The jack is placed in the cavity of the jacking platform, and the top core of the jack freely extends out of the circular hole on the top surface of the jacking platform. A pair of conversion pads are placed on the top surface of the jacking platform, with a gap left between the pair of conversion pads. The conversion pads lift the tool-type pad for temporary support.

[0006] The top surface of the jack is flush with the inner top surface of the jacking platform.

[0007] The height of the conversion pad is higher than that of the tool-type pad, and the height of the conversion pad is smaller than the maximum lifting stroke of the jack.

[0008] The conversion pad includes an L-shaped support plate and a reinforcing rib plate welded at the angle of the support plate.

[0009] The tool-type pad includes a scissors support in the middle and support blocks at both ends of the scissors support. The top surface of the support block is provided with a circular protrusion, and the bottom surface of the support block is provided with a circular groove at a position corresponding to the circular protrusion.

[0010] The height of the tool-type pad is not higher than the maximum lifting stroke of the jack.

[0011] The beneficial effects of the present invention are as follows: the present invention reduces high-altitude work to the greatest extent, improves the efficiency and precision of bridge jacking construction, is safe and reliable, and facilitates construction. At the same time, the device has a high degree of modularity, good versatility, and is reusable, thereby reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall layout structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the relative positions of the jacking platform and the jack of the utility model;

[0014] Figure 3 This is a schematic diagram of the conversion pad structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the tool-type pad structure of the utility model (showing the top surface structure of the support block);

[0016] Figure 5 This is a schematic diagram of the tool-type pad structure of the utility model (showing the bottom surface structure of the support block);

[0017] Figure 6 This is a schematic diagram of the application workflow of the utility model;

[0018] In the figure: 1-lifting platform; 2-jack; 3-conversion pad; 31-support plate; 32-reinforcement plate; 4-tool pad; 41-scissor support; 42-support block; 43-circular protrusion; 44-circular groove;

[0019] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] A modular jacking device using the bottom-up method includes a jacking platform 1, a jack 2, a conversion pad 3 and a tool-type pad 4. The jacking platform 1 is a hollow frame with a circular hole in the middle of the top surface of the jacking platform 1. The jack 2 is placed in the cavity of the jacking platform 1, and the top core of the jack 2 freely extends out of the circular hole on the top surface of the jacking platform 1. A pair of conversion pads 3 are placed on the top surface of the jacking platform 1, with a gap left between the pair of conversion pads 3. The conversion pads 3 lift the tool-type pad 4 for temporary support.

[0022] The top surface of the jack 2 is flush with the inner top surface of the jacking platform 1 .

[0023] The height of the conversion pad 3 is higher than that of the tool-type pad 4 , and the height of the conversion pad 3 is smaller than the maximum lifting stroke of the jack 2 .

[0024] The conversion pad 3 includes an L-shaped support plate 31 and a reinforcing rib plate 32 welded at the angle of the support plate 31 .

[0025] The tool-type pad 4 includes a scissors support 41 in the middle and support blocks 42 at both ends of the scissors support 41. The top surface of the support block 42 is provided with a circular protrusion 43, and the bottom surface of the support block 42 is provided with a circular groove 44 at the position corresponding to the circular protrusion 43, so that the tool-type pad 4 can be quickly aligned during installation.

[0026] The height of the tool-type pad 4 is not higher than the maximum lifting stroke of the jack 2 .

[0027] During the lifting process, the jack 2 lifts the upper tool pad 4, uses the conversion pad 3 to temporarily support the tool pad 4, then retracts the jack 2, and uses the hinge to insert the next layer of tool pad 4 into the predetermined position.

[0028] like Figure 6 As shown, the above steps are repeated, and the tool-type pads 4 are lifted alternately from the bottom until the beam reaches the predetermined elevation.

[0029] When it is necessary to carry out beam drop construction, just repeat the above steps in reverse order.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A modular jacking device with a bottom-up method, characterized in that: The utility model comprises a jacking platform (1), a jack (2), a conversion pad (3) and a tool pad (4); the jacking platform (1) is a hollow frame; a circular hole is opened in the middle of the top surface of the jacking platform (1); the jack (2) is placed in the cavity of the jacking platform (1); the top core of the jack (2) freely extends out of the circular hole on the top surface of the jacking platform (1); a pair of conversion pads (3) are placed on the top surface of the jacking platform (1); a gap is left between the pair of conversion pads (3); the conversion pads (3) lift up the tool pad (4) for temporary support.

2. A modular jacking device according to claim 1, characterized in that: The top surface of the jack (2) is flush with the inner top surface of the jacking platform (1).

3. A modular jacking device according to claim 2, characterized in that: The height of the conversion pad (3) is higher than that of the tool-type pad (4), and the height of the conversion pad (3) is smaller than the maximum lifting stroke of the jack (2).

4. A modular jacking device according to claim 3, characterized in that: The conversion pad (3) comprises an L-shaped support plate (31) and a reinforcing rib plate (32) welded at an angle of the support plate (31).

5. The modular jacking device according to claim 4, characterized in that: The tool-type pad (4) comprises a scissors support (41) in the middle and support blocks (42) at both ends of the scissors support (41); a circular protrusion (43) is provided on the top surface of the support block (42); and a circular groove (44) is provided on the bottom surface of the support block (42) at a position corresponding to the circular protrusion (43).

6. The modular jacking device according to claim 5, characterized in that: The height of the tool-type pad (4) is no higher than the maximum lifting stroke of the jack (2).

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