Support frame precast concrete base of large-tonnage steel box girder

Abstract

The utility model discloses a support frame precast concrete seat of a large-tonnage steel box girder, which belongs to the technical field of concrete precast members and comprises a base, the upper end of the base is movably connected with a connecting seat used for being connected with a steel box girder support frame, a mounting cavity is arranged in the base, and the lower portion of the connecting seat is positioned in the mounting cavity. When the concrete base is used, the base is hoisted into an excavated foundation pit through hoisting equipment, then the connecting base is hoisted into the mounting cavity in the base, and then the hanging lugs on the base are rotated to position the connecting base, so that the connection between the base and the connecting base can be completed in this way, and the concrete base is convenient to use. And then the steel box girder supporting frame is connected with the connecting base, in this way, mounting and dismounting of the concrete base are facilitated, and then the construction efficiency can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of concrete prefabricated part, and specifically relates to a support frame prefabricated concrete seat of large tonnage steel box girder. BACKGROUND

[0002] In the current steel box girder bridge erection, cast-in-place concrete is used as the foundation of the support frame. When supporting the support frame, a certain thickness of concrete foundation is poured on site. This method consumes a large amount of concrete, takes a long time and consumes a lot of materials. Moreover, since it is poured at one time, it cannot be adjusted, which limits the practicality of the concrete foundation. In the later stage of crushing and garbage removal, it also consumes a lot of time and effort, which greatly affects the construction period. SUMMARY

[0003] The utility model aims at providing a support frame prefabricated concrete seat of large tonnage steel box girder to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] A support frame prefabricated concrete seat of large tonnage steel box girder, comprising a base, a connecting seat for connecting with the steel box girder support frame movably connected to the upper end of the base, an installation cavity formed in the inside of the base, the lower part of the connecting seat located in the installation cavity, a plurality of lug installed on the outer wall of the base and the connecting seat, a feeding hole formed through the top of the connecting seat, a plugging screw threadedly connected to the inside of the feeding hole, two groups of filling assemblies symmetrically embedded on the outer wall of the base, and an adjusting assembly installed in the inside of the base for adjusting the height of the connecting seat.

[0006] As a further scheme of the utility model, two adjusting grooves are symmetrically formed in the inside of the base, and the adjusting assembly is located in the adjusting groove.

[0007] As a further scheme of the utility model, the adjusting assembly comprises an adjusting screw, the adjusting screw is rotatably connected with the base, an adjusting sleeve is fixedly connected to the inside of the base, the adjusting screw is located in the adjusting sleeve, and the adjusting screw is rotatably connected with the adjusting sleeve.

[0008] As a further scheme of the utility model, a supporting block is slidably connected to the inside of the adjusting groove, a threaded sleeve is slidably connected to the inside of the supporting block, the threaded sleeve is threadedly connected with the adjusting screw, two limiting grooves are symmetrically formed in the inner wall of the supporting block, two limiting blocks are fixedly connected to the outer wall of the threaded sleeve, and the limiting blocks are slidably connected in the limiting grooves.

[0009] As a further scheme of the utility model, the two support blocks are provided with inclined surfaces at the ends far from each other, and the inside of the adjusting groove is fixedly connected with an abutting block, the lower end of the abutting block is provided with an abutting surface attached to the support block, and the abutting surface is also provided in an inclined manner.

[0010] As a further scheme of the utility model, the enrichment assembly comprises an embedding frame embedded in the inside of the base, and a plurality of pre-tightening threaded rods are threadedly connected in the inside of the embedding frame.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. When the concrete seat of the utility model is used, the base is first hoisted into the excavated foundation pit by hoisting equipment, the connecting seat is then hoisted into the mounting cavity in the base, the lug on the base is then rotated to position the connecting seat, the base and the connecting seat are connected in this way, the steel box girder support frame is then connected with the connecting seat, the installation and disassembly of the concrete seat are facilitated in this way, and the construction efficiency is thus significantly improved.

[0013] 2. When the height of the connecting seat needs to be adjusted during the use of the concrete seat of the utility model, the adjusting screw is first rotated, the connecting seat is supported by the support block, the filling material is then filled into the mounting cavity through the feeding hole, the plurality of pre-tightening threaded rods are then rotated after the feeding hole is blocked, the plurality of pre-tightening threaded rods are thus inserted into the filling material in the mounting cavity, the filling material is further enriched, the compactness of the filling material is thus increased, the supporting effect of the filling material is thus increased, the base and the connecting seat can be adjusted according to the actual construction condition in this way, and the practicality of the concrete seat of the utility model is thus increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of a large-tonnage steel box girder support frame prefabricated concrete seat.

[0015] Figure 2 It is a split schematic view of a large-tonnage steel box girder support frame prefabricated concrete seat.

[0016] Figure 3 It is a structural view of the base in a large-tonnage steel box girder support frame prefabricated concrete seat.

[0017] Figure 4 It is a sectional view of the base in a large-tonnage steel box girder support frame prefabricated concrete seat.

[0018] Figure 5 It is a connection schematic view of the support block and the threaded sleeve in a large-tonnage steel box girder support frame prefabricated concrete seat.

[0019] In the figure: 1, base; 2, connecting seat; 3, enrichment assembly; 4, lug; 100, mounting cavity; 101, embedding groove; 102, embedding hole; 103, adjusting groove; 104, abutting block; 105, supporting block; 106, adjusting screw; 107, adjusting sleeve; 108, threaded sleeve; 109, limiting block; 110, limiting groove; 200, feeding hole; 201, plugging screw; 300, embedding frame; 301, pre-tightening threaded rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-3 In the embodiments of the utility model, a support frame prefabricated concrete seat of a large-tonnage steel box girder comprises a base 1, the upper end of the base 1 is movably connected with a connecting seat 2 used for connecting with a steel box girder support frame, a mounting cavity 100 is formed in the inside of the base 1, the lower part of the connecting seat 2 is located in the mounting cavity 100, a plurality of lugs 4 are installed on the outer walls of the base 1 and the connecting seat 2, a feeding hole 200 is formed through the top of the connecting seat 2, a plugging screw 201 is threadedly connected in the inside of the feeding hole 200, the filling material can be filled into the mounting cavity 100 through the feeding hole 200, the filling material can be further used to support the connecting seat 2, the filling material can be sand or iron sand, two groups of enrichment assemblies 3 are symmetrically embedded and connected on the outer wall of the base 1, and an adjusting assembly used for adjusting the height of the connecting seat 2 is further installed in the inside of the base 1.

[0022] The lug 4 on the base 1 is threadedly connected with the base 1, the lug 4 is moved to the inside of the base 1 by rotating the lug 4, and then the lug 4 is tightly abutted on the outer wall of the connecting seat 2, so that the connecting seat 2 is positioned by the plurality of lugs 4.

[0023] Please refer to Figures 3-5The interior of the base 1 is symmetrically provided with two adjusting grooves 103, and the adjusting assembly is located in the adjusting grooves 103, specifically, the interior of the base 1 is symmetrically fixedly connected with two protrusions, and the outer wall of the connecting seat 2 is symmetrically provided with two recesses corresponding to the protrusions, and the connecting seat 2 can slide along the protrusions through the recesses, and the adjusting grooves 103 are arranged in the two protrusions of the base 1, the adjusting assembly comprises an adjusting screw 106, and the adjusting screw 106 is rotationally connected with the base 1, more specifically, one end of the adjusting screw 106 is rotationally connected with the inner bottom end of the adjusting groove 103, and the other end penetrates the top end of the adjusting groove 103, and a hexagonal groove is formed in the upper end of the adjusting screw 106, so that the adjusting screw 106 can be adjusted by a wrench by a worker, the interior of the base 1 is further fixedly connected with an adjusting sleeve 107, the adjusting screw 106 is located in the adjusting sleeve 107, and the adjusting screw 106 is rotationally connected with the adjusting sleeve 107, the interior of the adjusting groove 103 is further slidably connected with a supporting block 105, the interior of the supporting block 105 is slidably connected with a threaded sleeve 108, the threaded sleeve 108 is threadedly connected with the adjusting screw 106, and the inner wall of the supporting block 105 is symmetrically provided with two limiting grooves 110, the outer wall of the threaded sleeve 108 is fixedly connected with two limiting blocks 109, and the limiting blocks 109 are slidably connected in the limiting grooves 110.

[0024] Please refer to Figure 4 The end of the two supporting blocks 105 away from each other is provided with an inclined surface, and the interior of the adjusting groove 103 is fixedly connected with an abutting block 104, the lower end of the abutting block 104 is provided with an abutting surface abutting against the supporting block 105, and the abutting surface is also inclined, the adjusting screw 106 drives the threaded sleeve 108 to move upward by rotating the adjusting screw 106, in the process of upward movement of the threaded sleeve 108, under the action of the inclined surface and the abutting surface, the supporting block 105 moves outward of the adjusting groove 103, and the supporting block 105 located outside the adjusting groove 103 can support the connecting seat 2 by this mode.

[0025] Please refer to Figure 2 The enrichment assembly 3 comprises an embedding frame 300 embedded in the interior of the base 1, and a plurality of pre-tightening threaded rods 301 are threadedly connected in the interior of the embedding frame 300, specifically, the outer wall of the base 1 is provided with an embedding groove 101, and a plurality of embedding holes 102 are further formed in the interior of the embedding groove 101, the embedding groove 101 and the embedding hole 102 are arranged to facilitate installation of the embedding frame 300, more specifically, the embedding frame 300 comprises two steel plates, and a plurality of threaded pipes are threadedly connected between the two steel plates, the steel plates are located in the embedding groove 101, the threaded pipes are located in the embedding holes 102, and the pre-tightening threaded rods 301 pass through the threaded pipes and are threadedly connected with the threaded pipes.

[0026] The working principle of the utility model is:

[0027] The concrete seat of the utility model uses, first hoist the base 1 into the excavated foundation pit through the hoisting equipment, then hoist the connecting seat 2 into the installation cavity 100 in the base 1, then rotate the lug 4 on the base 1 and make it abut against the outer wall of the connecting seat 2, and then position the connecting seat 2, and the connection between the base 1 and the connecting seat 2 can be completed through this way, then connect the steel box girder support frame with the connecting seat 2.

[0028] When the height of the connecting seat 2 needs to be adjusted, first rotate the adjusting screw 106, and the adjusting screw 106 will drive the supporting block 105 to slide in the adjusting groove 103 during rotation, and the supporting block 105 will move outward from the adjusting groove 103 during sliding in the adjusting groove 103, after adjusting the position of the supporting block 105, hoist the connecting seat 2 into the base 1, the connecting seat 2 will be supported by the supporting block 105, then remove the plugging screw 201, then fill the filling material into the installation cavity 100 through the feeding hole 200, and the granular filling material will be laid at the lower end of the connecting seat 2, after the filling material is filled into the installation cavity 100, rotate the plugging screw 201 to plug the feeding hole 200, and then rotate the several pre-tightening threaded rods 301 after the feeding hole 200 is plugged, so that the several pre-tightening threaded rods 301 are inserted into the filling material in the installation cavity 100, and the filling material is further filled, so that the tightness of the filling material is increased, and the supporting effect of the filling material is increased, and finally rotate the several lugs 4 on the base 1 to limit the connecting seat 2, and the base 1 and the connecting seat 2 can be adjusted according to the actual construction condition through this way, and the practicability of the utility model concrete seat is increased. After use, the connecting seat 2 and the base 1 can be separated quickly, and then the filling material can be poured out.

[0029] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A precast concrete support frame for a large-tonnage steel box girder, comprising a base (1), characterized in that, The upper end of the base (1) is movably connected to a connecting seat (2) for connecting with the steel box girder support frame. The base (1) has an installation cavity (100) inside. The lower part of the connecting seat (2) is located in the installation cavity (100). Several hanging ears (4) are installed on the outer walls of the base (1) and the connecting seat (2). The top of the connecting seat (2) has a through-hole (200). The inside of the inlet hole (200) is threaded with a sealing screw (201). Two sets of solidifying components (3) are symmetrically embedded on the outer wall of the base (1). The base (1) also has an adjustment component for adjusting the height of the connecting seat (2).

2. The precast concrete support frame for a large-tonnage steel box girder according to claim 1, characterized in that, The base (1) has two symmetrically arranged adjustment slots (103) inside, and the adjustment component is located in the adjustment slots (103).

3. The precast concrete support frame for a large-tonnage steel box girder according to claim 2, characterized in that, The adjustment assembly includes an adjustment screw (106), which is rotatably connected to the base (1). An adjustment sleeve (107) is also fixedly connected inside the base (1), and the adjustment screw (106) is located inside the adjustment sleeve (107), and the adjustment screw (106) is rotatably connected to the adjustment sleeve (107).

4. The precast concrete support frame for a large-tonnage steel box girder according to claim 3, characterized in that, The adjustment groove (103) is also slidably connected to a support block (105), and the support block (105) is slidably connected to a threaded sleeve (108), and the threaded sleeve (108) is threadedly connected to the adjustment screw (106). The inner wall of the support block (105) is symmetrically provided with two limiting grooves (110), and the outer wall of the threaded sleeve (108) is fixedly connected with two limiting blocks (109), and the limiting blocks (109) are slidably connected in the limiting grooves (110).

5. The precast concrete support frame for a large-tonnage steel box girder according to claim 4, characterized in that, Both of the two support blocks (105) have inclined surfaces at their ends that are far apart from each other, and an abutment block (104) is fixedly connected inside the adjustment groove (103). The lower end of the abutment block (104) has an abutment surface that fits against the support block (105), and the abutment surface is inclined.

6. The precast concrete support frame for a large-tonnage steel box girder according to claim 1, characterized in that, The filling component (3) includes an insert frame (300) which is embedded inside the base (1) and has several pre-tightened threaded rods (301) threadedly connected inside the insert frame (300).

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