Welding-free bridge foundation pit steel sheet pile supporting device

Abstract

A welding-free bridge foundation pit steel sheet pile supporting device comprises a steel sheet pile, a plurality of sets of hanging plates are installed at the top end of the steel sheet pile at intervals, a hook is fixed to each set of hanging plates, and transverse enclosing purlins and longitudinal enclosing purlins are hung through the hooks; sliding grooves are fixed to the transverse enclosing purlins and the longitudinal enclosing purlins, and the sliding blocks are arranged in the sliding grooves in a sliding mode. The sliding blocks of the front and rear transverse enclosing purlins are opposite and are fixedly provided with first screw rods with opposite rotating directions; the two first screw rods are in threaded connection with the first sleeve; second lead screws with opposite rotating directions are hinged to the sliding blocks between the longitudinal enclosing purlins and the transverse enclosing purlins, and the two second lead screws are in threaded connection with the second sleeve. According to the welding-free bridge foundation pit steel sheet pile supporting device, the mounting and dismounting speed can be increased.

Description

Technical Field

[0001] The utility model relates to bridge construction equipment, in particular to a welding-free bridge foundation pit steel sheet pile supporting device. Background Art

[0002] In the process of bridge construction, it is necessary to first dig a bridge foundation pit on the ground base, and then pour concrete in the bridge foundation pit. In the patent with application number "201810331547.8", Larsen steel sheet piles are used for enclosure. The inner side of the Larsen steel sheet pile is a long beam and a short beam. The long beam and the short beam are fixed on the Larsen steel sheet pile by welding. When the welded structure is removed later. On the one hand, the speed is slow, and on the other hand, the Larsen steel sheet pile will be damaged during the cutting process. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a welding-free bridge foundation pit steel sheet pile supporting device, which can avoid welding, improve the disassembly and assembly efficiency, and reduce the damage to the Larsen steel sheet piles.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A welding-free bridge foundation pit steel sheet pile support device comprises steel sheet piles, and a plurality of groups of hanging plates are installed at intervals on the top of the steel sheet piles, and hooks are fixed on each group of hanging plates, and the hooks are used to hang transverse purlins and longitudinal purlins; slide grooves are fixed on the transverse purlins and longitudinal purlins, and sliders are slidably arranged in the slide grooves; the sliders of the front and rear transverse purlins face and are fixed with first screw rods with opposite rotation directions, and the two first screw rods are threadedly connected to the first sleeve; a second screw rod with opposite rotation directions is hinged on the slider between the longitudinal purlin and the transverse purlin, and the two second screw rods are threadedly connected to the second sleeve.

[0006] The cross section of the hanging plate is U-shaped, and a first threaded hole and a second threaded hole are respectively provided at the front and the back. The first screw is screwed into the first threaded hole and connected to the tightening plate, and the second screw is screwed into the second threaded hole and the threaded hole of the hook and tightened.

[0007] A limiting plate with a hole is arranged on the outer side of one end of the hanging plate, and a limiting column is fixed on the top end of the other side; adjacent hanging plates are connected through the limiting columns and the holes on the limiting plate.

[0008] The utility model provides a welding-free bridge foundation pit steel sheet pile supporting device, which has the following technical effects:

[0009] 1) By setting hanging plates, hooks and connecting screws for fastening, hanging and supporting points can be provided for the transverse purlins and longitudinal purlins. In this way, there is no need to weld the transverse purlins and longitudinal purlins in the early stage, and there is no need to cut the transverse purlins and longitudinal purlins when disassembling them in the later stage, which improves efficiency.

[0010] By using hooks of different lengths (formed by bending the plate body), the hanging support of single-layer or double-layer purlins can be achieved.

[0011] 2) By using a hanging plate with a combination of a limit plate with holes and a limit column, adjacent hanging plates can be plugged in and spliced. Thus, the same support point can provide multiple hook installation points. According to actual needs, two sets of long and short hooks can be installed to achieve the installation of double-layer purlins and ensure the support strength.

[0012] 3) By providing a first telescopic rod composed of a first screw rod and a first sleeve and a second telescopic rod composed of a second screw rod and a second sleeve, the longitudinal tightening and corner tightening of the transverse purlin and the longitudinal purlin can be achieved to avoid deformation and displacement of the steel sheet piles; and by adopting a slide groove and a slider, the first telescopic rod and the second telescopic rod can be quickly disassembled to improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a top view of the utility model.

[0015] Figure 2 This is a schematic diagram of the installation structure of the transverse purlin in the utility model (front view).

[0016] Figure 3 This is a schematic diagram of the installation structure of the transverse purlin in the utility model (back side).

[0017] Figure 4 This is a schematic structural diagram of the central hanging plate of the utility model (first perspective).

[0018] Figure 5 This is a schematic structural diagram of the central hanging plate of the utility model (second viewing angle).

[0019] Figure 6 This is a cross-sectional view of the utility model after the hanging plate is installed.

[0020] Figure 7 It is a schematic diagram of the connection structure of the transverse purlins in the utility model.

[0021] Figure 8 It is a structural schematic diagram of the slideway in the utility model.

[0022] In the figure: steel sheet pile 1, hanging plate 2, hook 3, transverse purlin 4, longitudinal purlin 5, slide groove 6, slider 7, first screw rod 8, first sleeve 9, second screw rod 10, second sleeve 11, first threaded hole 2.1, second threaded hole 2.2, first screw rod 2.3, tightening plate 2.4, second screw rod 2.5, limit plate 2.6, limit column 2.7. DETAILED DESCRIPTION

[0023] like Figure 1-2 As shown, a welding-free bridge foundation pit steel sheet pile support device includes a steel sheet pile 1, which is inserted into the soil layer and fixed after being struck. A plurality of groups of hanging plates 2 are installed at intervals on the top of the steel sheet pile 1, and the hanging plates 2 are detachably fixed to the steel sheet pile 1. At least one group of hooks 3 is detachably fixed on each group of hanging plates 2, and the hooks 3 include a vertical plate body, and the lower end of the vertical plate body is integrally formed with a bent hook plate. The hooks 3 are used to directly place the transverse purlin 4 and the longitudinal purlin 5, and prevent the transverse purlin 4 and the longitudinal purlin 5 from detaching horizontally outward. Slide grooves 6 are fixed at intervals on the transverse purlin 4 and the longitudinal purlin 5, and the bottom end of the slide groove 6 is sealed. The slider 7 can be slid into the required slide groove 6 and supported by the bottom plate of the slide groove 6. The slider 7 can slide out directly when disassembled.

[0024] The sliders 7 of the front and rear transverse purlins 4 are arranged opposite to each other. A first screw rod 8 is fixed on the slider 7. The two first screw rods 8 rotate in opposite directions. The two first screw rods 8 are threadedly connected with the first sleeve 9. By rotating the handle of the first sleeve 9, the two first screw rods 8 can be relatively close to or away from each other, so as to realize the front and rear transverse purlins 4 being pressed against the steel sheet piles 1.

[0025] A second screw rod 10 with opposite rotation directions is hinged on the slider 7 between the longitudinal purlin 5 and the transverse purlin 4, and the two second screw rods 10 are threadedly connected to the second sleeve 11. Similarly, by rotating the handle of the second sleeve 11, the two second screw rods 10 can be relatively close to or away from each other, thereby achieving reinforcement of the corners of the longitudinal purlin 5 and the transverse purlin 4.

[0026] Preferably, the hanging plate 2 has a U-shaped cross section, and its shape is consistent with that of the steel sheet pile 1, so it can be directly hung on the steel sheet pile 1. A first threaded hole 2.1 and a second threaded hole 2.2 are respectively opened transversely on the front and back of the hanging plate 2. Among them, the first screw 2.3 is screwed into the first threaded hole 2.1 and connected to the top tightening plate 2.4, and the second screw 2.5 is screwed into the second threaded hole 2.2 and the threaded hole of the hook 3 and tightened. During installation, the hook 3 is first fastened to the hanging plate 2 by the second screw 2.5. Then the hanging plate 2 is hung on the top of the steel sheet pile 1, and then the first screw 2.3 is rotated so that the top tightening plate 2.4 gradually approaches the side wall of the steel sheet pile 1, and the steel sheet pile 1 is clamped between the hook 3 and the top tightening plate 2.4. The fixation is completed.

[0027] like Figure 2 , Figure 4 As shown, preferably, a limit plate 2.6 with a hole is provided on the outer side of one end of the hanging plate 2, and a limit column 2.7 is fixed on the top of the other side; adjacent hanging plates 2 are connected through the limit column 2.7 and the hole on the limit plate 2.6. In this way, multiple hanging plates 2 can be spliced ​​continuously. Multiple hanging plates 2 can be spliced ​​continuously to form multiple hook 3 installation points. The length of the hook 3 here can be determined according to actual conditions. When it is necessary to set up two layers of upper and lower purlins, multiple hook 3 installation points can be respectively installed with two groups of long and short hooks 3 (such as Figure 2As shown); single-layer purlin can also be installed, which is flexible and convenient.

Claims

1. A welding-free bridge foundation pit steel sheet pile support device, characterized in that: The invention comprises a steel sheet pile (1), wherein a plurality of groups of hanging plates (2) are installed at intervals on the top of the steel sheet pile (1), and a hook (3) is fixed on each group of hanging plates (2), and the hook (3) is used to hang a transverse purlin (4) and a longitudinal purlin (5); a slide groove (6) is fixed on the transverse purlin (4) and the longitudinal purlin (5), and a slider (7) is slidably arranged in the slide groove (6); the sliders (7) of the front and rear transverse purlins (4) face and are fixed with first screw rods (8) with opposite rotation directions, and the two first screw rods (8) are threadedly connected to a first sleeve (9); a second screw rod (10) with opposite rotation directions is hinged on the slider (7) between the longitudinal purlin (5) and the transverse purlin (4), and the two second screw rods (10) are threadedly connected to a second sleeve (11).

2. A welding-free bridge foundation pit steel sheet pile supporting device according to claim 1, characterized in that: The hanging plate (2) has a U-shaped cross section and is provided with a first threaded hole (2.1) and a second threaded hole (2.2) at the front and rear, respectively, wherein the first screw rod (2.3) is screwed into the first threaded hole (2.1) and connected to the tightening plate (2.4), and the second screw rod (2.5) is screwed into the second threaded hole (2.2) and the threaded hole of the hook (3) and tightened.

3. The welding-free bridge foundation pit steel sheet pile supporting device according to claim 1 is characterized in that: A limiting plate (2.6) with a hole is provided on the outer side of one end of the hanging plate (2), and a limiting column (2.7) is fixed on the top end of the other side; adjacent hanging plates (2) are connected through the limiting columns (2.7) and the holes on the limiting plates (2.6).

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