Bridge jacking inverted jack fixing device

Abstract

The utility model relates to bridge jacking technology field, and disclose a kind of bridge jacking inverted jack fixing device, including jack base and jack top rod, fixed mechanism is provided on the jack base;Fixed steel plate is welded on distribution beam, control fixed tie and cooperate tie nut to make jack base clamping between fixed steel plate and fixed tray, the fixing of jack base can be completed, several jack bases are fixed in the lower side of distribution beam, jack top rod is ejected through nesting slot hole, cooperate the ejection of several jack thimbles in the lower part of distribution beam alternately, while in jack thimble lifting, main supporting plate and vice supporting plate are stacked on original height, benefit from the staggered connection mode of main supporting plate and two vice supporting plates, while realizing bridge cyclic jacking, avoid the deviation of supporting plate after stacking under pressure.

Description

Technical Field

[0001] This utility model relates to the field of bridge jacking technology, specifically a bridge jacking inverted jack fixing device. Background Technology

[0002] During bridge jacking, the jacks need to be used in multiple cycles to lift the beams due to the required lifting height. When the jacks are upright, after each lifting stroke is completed, the jacks need to be moved away from the top position, and then steel pads are installed at the top position. After the steel pads are installed, the jacks are moved to the raised steel pads to complete the jack lifting cycle and begin the next lifting cycle.

[0003] However, the installation space for jacks is small, and all the handling work is done manually, which leads to problems such as high labor intensity and fatigue for workers. In addition, the pressure of the jacks on the support plates during the lifting process is relatively large, and even a slight deviation between the support plates can cause misalignment and safety accidents. Therefore, there is a need to provide a bridge lifting inverted jack fixing device. Utility Model Content

[0004] The purpose of this utility model is to provide a bridge jacking inverted jack fixing device to solve the problems of high labor intensity and difficulty of operation, as well as unstable support of the support plate, in the process of cyclic jacking of bridges by existing devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bridge jacking inverted jack fixing device, comprising a jack base and a jack rod, wherein a fixing mechanism is provided on the jack base; the fixing mechanism comprises a distribution beam, a fixing steel plate and a fixing tray, wherein limit holes are provided at the four corners of the fixing steel plate, and fixing tie rods are fixedly installed at the four corners of the fixing tray, wherein tie rod nuts are threaded onto the fixing tie rods.

[0006] Preferably, the fixing steel plate is welded and fixedly installed on the distribution beam, and the fixing steel plate is parallel to the fixing tray.

[0007] Preferably, the inner diameter of the limiting hole is larger than the inner diameter of the fixing tie rod, and the four limiting holes are adapted to the four fixing ties rods.

[0008] Preferably, the height of the jack base is less than the length of the fixing tie rod, and the jack base is located between the fixing steel plate and the fixing tray.

[0009] Preferably, the jack rod is provided with a lifting mechanism, the lifting mechanism includes a main support plate, and auxiliary support plates are fixedly installed on both sides of the main support plate. The fixed tray has a nesting slot in the middle.

[0010] Preferably, the main support plate and the two auxiliary support plates are at the same height, and the main support plate is higher than the two auxiliary support plates.

[0011] Preferably, the inner diameter of the nested slot is greater than the height of the jack rod, and the fixed tray is fitted onto the jack rod through the nested slot.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) The bridge jacking inverted jack fixing device involves welding a fixed steel plate to the distribution beam, controlling the fixing tie rod to be embedded in the limiting hole and keeping the fixed steel plate parallel to the fixed tray, and then retracting the jack rod into the jack base and placing it between the fixed steel plate and the fixed tray and centering it. The tie rod nut is used to clamp the jack base between the fixed steel plate and the fixed tray, thus completing the fixing of the jack base. Several jack bases are fixed on the underside of the distribution beam, eliminating the need for manual movement of the jacks and reducing the labor intensity of workers.

[0014] 2) The bridge jacking inverted jack fixing device benefits from the connection method of the main support plate and two auxiliary support plates, ensuring that the multi-layer main support plate and two auxiliary support plates can be nested and stacked, effectively avoiding displacement under heavy pressure. The jack rod is pushed out through the nested slot hole, and several jack pins at the bottom of the distribution beam are pushed out alternately. At the same time, when the jack pins are lifted, the main support plate and auxiliary support plate are stacked on the original height. While realizing the cyclic jacking of the bridge, the support plates are prevented from shifting under pressure. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a bridge lifting inverted jack fixing device according to an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the device in an embodiment of the present utility model;

[0017] Figure 3 This is a three-dimensional structural exploded view of the fixing mechanism in an embodiment of this utility model;

[0018] Figure 4 This is a three-dimensional structural exploded view of the lifting mechanism in an embodiment of this utility model;

[0019] Figure 5 This is a cross-sectional view of the jack rod and the nested slot in an embodiment of this utility model.

[0020] In the diagram: 1. Jack base; 2. Jack rod; 3. Fixing mechanism; 301. Distribution beam; 302. Fixing steel plate; 303. Fixing tray; 304. Limiting hole; 305. Fixing tie rod; 306. Tie rod nut; 4. Lifting mechanism; 401. Main support plate; 402. Secondary support plate; 403. Nesting slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Combination Figures 1-3 A bridge jacking inverted jack fixing device includes a jack base 1 and a jack rod 2. A fixing mechanism 3 is provided on the jack base 1. The fixing mechanism 3 includes a distribution beam 301, a fixing steel plate 302 and a fixing tray 303. Limiting holes 304 are provided at the four corners of the fixing steel plate 302. Fixing tie rods 305 are fixedly installed at the four corners of the fixing tray 303. Tie rod nuts 306 are threaded on the fixing tie rods 305.

[0024] The fixed steel plate 302 is welded and fixedly installed on the distribution beam 301, and the fixed steel plate 302 is parallel to the fixed tray 303. The inner diameter of the limiting hole 304 is larger than the inner diameter of the fixing tie rod 305, and the four limiting holes 304 are adapted to the four fixing ties 305. The height of the jack base 1 is less than the length of the fixing tie rod 305, and the jack base 1 is located between the fixed steel plate 302 and the fixed tray 303. In use, the fixed steel plate 302 is welded to the distribution beam 301, the fixing tie rod 305 is controlled to be embedded in the limiting hole 304 and the fixed steel plate 302 is kept parallel to the fixed tray 303. Then, the jack rod 2 is retracted into the jack base 1 and placed between the fixed steel plate 302 and the fixed tray 303 and centered. The tie rod nut 306 is used to clamp the jack base 1 between the fixed steel plate 302 and the fixed tray 303, thus completing the fixation of the jack base 1.

[0025] Example 2

[0026] See Figure 4 and Figure 5 The jack rod 2 is equipped with a lifting mechanism 4, which includes a main support plate 401. A secondary support plate 402 is fixedly installed on both sides of the main support plate 401. A nesting slot 403 is opened in the middle of the fixed tray 303.

[0027] The main support plate 401 and the two auxiliary support plates 402 are at the same height, with the main support plate 401 being higher than the two auxiliary support plates 402. This creates a convex shape on the upper side and a concave shape on the lower side of the main support plate 401 and the two auxiliary support plates 402. Benefiting from the consistent height of the main support plate 401 and the two auxiliary support plates 402, a nested stacking of multiple main support plates 401 and two auxiliary support plates 402 can be achieved, effectively preventing displacement under heavy pressure. The inner diameter of the nesting slot 403 is larger than the height of the jack rod 2. The fixed tray 303 is fitted onto the jack rod 2 through the nesting slot 403. In use, the jack rod 2 can be pushed out through the nesting slot 403, and several jack pins 2 at the bottom of the distribution beam 301 are pushed out alternately. When the jack pins 2 are lifted, the main support plate 401 and the auxiliary support plate 402 are stacked, thus realizing the cyclic lifting of the bridge.

[0028] In actual operation, the fixed steel plate 302 is welded to the distribution beam 301, the fixed tie rod 305 is embedded in the limiting hole 304 and the fixed steel plate 302 is kept parallel to the fixed tray 303. Then, the jack rod 2 is put into the jack base 1 and placed between the fixed steel plate 302 and the fixed tray 303 and centered. The tie rod nut 306 is used to clamp the jack base 1 between the fixed steel plate 302 and the fixed tray 303, thus completing the fixation of the jack base 1. Several jack bases 1 are fixed on the underside of the distribution beam 301, eliminating the need for manual movement of the jack and reducing the labor intensity of workers.

[0029] Benefiting from the connection method of the main support plate 401 and the two auxiliary support plates 402, it is ensured that the multi-layer main support plate 401 and the two auxiliary support plates 402 can be nested and stacked, effectively avoiding displacement under heavy pressure. Among them, the jack rod 2 is pushed out through the nested slot 403, and several jack pins 2 at the bottom of the distribution beam 301 are pushed out alternately. At the same time, when the jack pins 2 are lifted, the main support plate 401 and the auxiliary support plate 402 are stacked on the original height. While realizing the cyclic lifting of the bridge, the support plates are prevented from shifting under pressure.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge jacking inverted jack fixing device, comprising a jack base (1) and a jack rod (2), characterized in that: The jack base (1) is provided with a fixing mechanism (3); The fixing mechanism (3) includes a distribution beam (301), a fixing steel plate (302) and a fixing tray (303). The fixing steel plate (302) has limit holes (304) at each of its four corners. The fixing tray (303) has fixing tie rods (305) fixedly installed at each of its four corners. The fixing tie rods (305) are threaded with tie rod nuts (306).

2. The bridge jacking inverted fixing device according to claim 1, characterized in that: The fixed steel plate (302) is welded and fixedly installed on the distribution beam (301), and the fixed steel plate (302) is parallel to the fixed tray (303).

3. The bridge jacking inverted fixing device according to claim 1, characterized in that: The inner diameter of the limiting hole (304) is larger than the inner diameter of the fixing tie rod (305), and the four limiting holes (304) are adapted to the four fixing ties (305).

4. The bridge jacking inverted fixing device according to claim 3, characterized in that: The height of the jack base (1) is less than the length of the fixing tie rod (305), and the jack base (1) is located between the fixing steel plate (302) and the fixing tray (303).

5. A bridge jacking inverted fixing device according to claim 1, characterized in that: The jack rod (2) is provided with a lifting mechanism (4), which includes a main support plate (401). A secondary support plate (402) is fixedly installed on both sides of the main support plate (401), and a nesting slot (403) is opened in the middle of the fixed tray (303).

6. A bridge jacking inverted fixing device according to claim 5, characterized in that: The main support plate (401) and the two auxiliary support plates (402) are at the same height, and the main support plate (401) is higher than the two auxiliary support plates (402).

7. A bridge jacking inverted fixing device according to claim 5, characterized in that: The inner diameter of the nested slot (403) is greater than the height of the jack rod (2), and the fixed tray (303) is fitted onto the jack rod (2) through the nested slot (403).

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