Fabricated steel structure pre-embedded fastening assembly for steel structure bridge building

Abstract

The utility model discloses a steel structure bridge building assembly type steel structure pre-embedded fastening assembly which comprises a base plate, the upper surface of the base plate is fixedly connected with a fastening bolt, the side surface of the base plate is fixedly connected with a fixing frame, a first fastening mechanism is arranged in the fixing frame, and a second fastening mechanism is arranged in the fixing frame. The first fastening mechanism comprises an inserting rod, a convex ring and a first spring, one end of the inserting rod penetrates through the fixing frame and is in sliding connection with the fixing frame, a pyramid tip is arranged at the penetrating end of the inserting rod, the outer surface of the inserting rod is fixedly connected with the convex ring, and the side surface of the convex ring is fixedly connected with the first spring; the end, away from the convex ring, of the first spring is fixedly connected with the base plate, the other end of the inserting rod extends into the base plate, the side surface of the inserting rod is slidably connected with the base plate, the connecting plate is lifted upwards, the inserting column is separated from the limiting hole, the inserting rod slides outwards under the action of the first spring, and the tip end of the pyramid is inserted into the edge of the foundation pit; and the stability of the substrate in the horizontal direction is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure bridge construction, in particular to an assembled steel structure pre-embedded fastening component for a steel structure bridge construction. Background Art

[0002] Steel bridges are bridges whose main load-bearing structures are made of steel. The beams and piers form a rigid connection. Due to the consolidation of the piers and beams, the beams and piers are subjected to stress as a whole. The piers not only bear the vertical pressure caused by the load on the beams, but also bear the bending moment and horizontal thrust. Rigid frame bridges have beautiful appearance, small structural dimensions, large clearance under the bridge, and a wide field of vision under the bridge. They are often used in bridges that require large clearance and have limited building height. When constructing prefabricated steel structure bridges, the embedded fastening components should first be embedded in the foundation pit as the foundation of the rigid frame bridge, and then the piers and bridge body should be assembled and built on the basis of the embedded fastening components.

[0003] When the existing pre-embedded fastening components are pre-embedded, there will be a certain gap between the pre-embedded fastening components and the edge of the foundation pit when the pre-embedded fastening components are placed inside the foundation pit. The impact force generated during the pouring process may cause a certain deviation of the pre-embedded fastening components, affecting the construction quality of the steel structure bridge; and when the existing pre-embedded fastening components are pre-embedded, generally, the clamping plates are directly inserted into the ground below the bottom of the foundation pit through fixed plug rods to achieve the vertical fixation of the base plate. When the fixed plug rods are inserted, not only will the soil around the plug rods be loosened and deformed, but the direction of insertion cannot be guaranteed to be completely vertical, resulting in a gap between the bottom of the base plate and the bottom of the foundation pit, affecting the supporting effect of the pre-embedded fastening components. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art and provides a pre-buried fastening assembly for assembled steel structures of steel bridge buildings. The stability of the base plate in the horizontal direction can be improved by setting a first fastening mechanism. The handle is held to lift the connecting plate upwards so that the plug column is disengaged from the limiting hole. The plug rod slides outwards under the action of the first spring so that the tip of the pyramid is inserted into the edge of the foundation pit, thereby ensuring the stability of the base plate in the horizontal direction and the operation is simple and convenient. The stability of the base plate in the vertical direction can be improved by setting a second fastening mechanism. The connecting block of the base plate is pressed toward the inside of the fixing seat so that the wedge block compresses the second spring and enters the inside of the groove. When the lower surface of the connecting block is against the bottom of the fixing seat, the wedge block slides under the action of the second spring until the wedge block and the slot are engaged with each other, thereby improving the stability of the base plate in the vertical direction and having good practicality.

[0005] The utility model also provides a pre-embedded fastening component for an assembled steel structure of a steel bridge building, comprising: a base plate, the upper surface of the base plate is fixedly connected with a fastening bolt, the side surface of the base plate is fixedly connected with a fixing frame, a first fastening mechanism is arranged inside the fixing frame, the first fastening mechanism comprises an insertion rod, a convex ring and a first spring, one end of the insertion rod passes through the fixing frame and is slidably connected, the penetrating end of the insertion rod is provided with a pyramid tip, the outer surface of the insertion rod is fixedly connected with the convex ring, the side surface of the convex ring is fixedly connected with the first spring, one end of the first spring away from the convex ring is fixedly connected with the base plate, the other end of the insertion rod extends into the interior of the base plate, and the side surface of the insertion rod is slidably connected with the base plate.

[0006] According to the embedded fastening assembly of the prefabricated steel structure of a steel bridge building, a connecting plate is provided on the upper surface of the base plate, a plug column is fixedly connected to the lower surface of the connecting plate, and the bottom end of the plug column extends into the interior of the base plate and penetrates the plug rod setting.

[0007] According to the embedded fastening assembly for the prefabricated steel structure of a steel bridge building, the upper surface of the connecting plate is provided with handles fixedly connected thereto, and the number of the handles is two and they are symmetrically distributed.

[0008] According to the embedded fastening assembly for the prefabricated steel structure of a steel bridge building, a limiting hole is provided on the side surface of the insertion rod, and the cross-sectional radius of the insertion column is the same as the aperture size of the limiting hole.

[0009] According to the embedded fastening assembly for the prefabricated steel structure of a steel bridge building, the number of the first fastening mechanisms is six and they are symmetrically distributed.

[0010] According to the embedded fastening assembly of the prefabricated steel structure of a steel bridge building, a connecting block is fixedly connected to the lower surface of the base plate, a fixing seat is arranged below the base plate, a groove is arranged inside the connecting block, a second fastening mechanism is arranged inside the groove, the second fastening mechanism includes a second spring and a wedge block, the bottom inner wall of the groove is fixedly connected to the second spring, and the end of the second spring away from the groove is fixedly connected to the wedge block.

[0011] According to the embedded fastening assembly for the prefabricated steel structure of a steel bridge building, a slot is provided on the inner side wall of the fixing seat, and the wedge block and the slot are adapted to each other.

[0012] According to the embedded fastening assembly for the prefabricated steel structure of a steel bridge building, the number of the fixing seats is four and they are arranged in a rectangular array, and the upper surfaces of the fixing seats abut against the base plate.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall structure of a pre-buried fastening assembly of a steel structure bridge building assembly according to the utility model;

[0016] Figure 2 It is a schematic diagram of the connection between a base plate and a first fastening mechanism of a pre-buried fastening assembly of an assembled steel structure of a steel bridge building of the utility model;

[0017] Figure 3 It is an axial schematic diagram of a pre-buried fastening assembly of an assembled steel structure for a steel bridge building according to the utility model;

[0018] Figure 4 It is a schematic diagram of the connection between a connecting block and a second fastening mechanism of a pre-buried fastening assembly of an assembled steel structure of a steel bridge building according to the utility model.

[0019] Legend:

[0020] 1. Base plate; 2. Fastening bolts; 3. Fixing frame; 4. Insertion rod; 5. Convex ring; 6. First spring; 7. Pyramid tip; 8. Connecting plate; 9. Insertion column; 10. Handle; 11. Fixing seat; 12. Connecting block; 13. Groove; 14. Second spring; 15. Wedge block; 16. Slot. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-4 The utility model embodiment is a pre-buried fastening assembly for an assembled steel structure of a steel bridge building, which includes: a base plate 1, and a fastening bolt 2 is fixedly connected to the upper surface of the base plate 1. The base plate 1 and the fastening bolt 2 are used as a basis to assemble and build the bridge piers and the bridge body.

[0023] The side surface of the substrate 1 is fixedly connected with a fixing frame 3, and a first fastening mechanism is arranged inside the fixing frame 3. The number of the first fastening mechanisms is six and they are symmetrically distributed. The first fastening mechanism includes an insertion rod 4, a convex ring 5 and a first spring 6. One end of the insertion rod 4 is arranged through the fixing frame 3 and is slidably connected. The through end of the insertion rod 4 is provided with a pyramid tip 7. The outer surface of the insertion rod 4 is fixedly connected with the convex ring 5. The side surface of the convex ring 5 is fixedly connected with the first spring 6. One end of the first spring 6 away from the convex ring 5 is fixedly connected with the substrate 1, and the other end of the insertion rod 4 extends into the substrate 1. Internally, the side surface of the insertion rod 4 is slidably connected to the base plate 1, and a connecting plate 8 is provided on the upper surface of the base plate 1. A plug post 9 is fixedly connected to the lower surface of the connecting plate 8. The bottom end of the plug post 9 extends into the interior of the base plate 1 and passes through the insertion rod 4. A limiting hole is provided on the side surface of the insertion rod 4. The cross-sectional radius of the plug post 9 is the same as the aperture size of the limiting hole. The plug post 9 is taken out of the limiting hole, and the insertion rod 4 slides outward under the action of the first spring 6, so that the pyramid tip 7 is inserted into the edge of the foundation pit, ensuring the horizontal stability of the base plate 1, which has good practicality.

[0024] The upper surface of the connecting plate 8 is provided with a handle 10 fixedly connected thereto. There are two handles 10 symmetrically distributed. The connecting plate 8 is lifted upward by the handles 10 to disengage the plug post 9 from the limiting hole.

[0025] The lower surface of the substrate 1 is fixedly connected with a connecting block 12, a fixing seat 11 is arranged below the substrate 1, a groove 13 is arranged inside the connecting block 12, a second fastening mechanism is arranged inside the groove 13, the second fastening mechanism includes a second spring 14 and a wedge 15, the bottom inner wall of the groove 13 is fixedly connected with the second spring 14, the end of the second spring 14 away from the groove 13 is fixedly connected with the wedge 15, a slot 16 is arranged on the side inner wall of the fixing seat 11, the wedge 15 and the slot 16 are adapted to each other, the number of the fixing seats 11 is four and they are arranged in a rectangular array, the upper surface of the fixing seat 11 is connected to the base The plates 1 are in contact with each other. Before pre-burying the base plate 1, four rectangular grooves are dug at the bottom of the foundation pit. The fixing seat 11 is placed in the rectangular groove and the outer side of the fixing seat 11 is poured to fix the fixing seat 11. Then the connecting block 12 of the base plate 1 is pressed toward the inside of the fixing seat 11, so that the wedge block 15 compresses the second spring 14 and enters the inside of the groove 13. When the lower surface of the connecting block 12 is in contact with the bottom of the fixing seat 11, the wedge block 15 slides under the action of the second spring 14 until the wedge block 15 and the card slot 16 are engaged with each other, thereby improving the stability of the base plate 1 in the vertical direction.

[0026] Working principle: first put the fixing seat 11 into the rectangular groove and cast the outer side of the fixing seat 11 to fix the fixing seat 11, and then press the connecting block 12 of the substrate 1 toward the inside of the fixing seat 11, so that the wedge block 15 compresses the second spring 14 and enters the inside of the groove 13. When the lower surface of the connecting block 12 is against the bottom of the fixing seat 11, the wedge block 15 slides under the action of the second spring 14 until the wedge block 15 and the card slot 16 are engaged with each other, thereby improving the vertical stability of the substrate 1. Then, the connecting plate 8 is lifted up by the handle 10 to disengage the plug post 9 from the limiting hole. The plug rod 4 slides outward under the action of the first spring 6, so that the pyramid tip 7 is inserted into the edge of the foundation pit, ensuring the horizontal stability of the substrate 1, which has good practicality.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A pre-buried fastening assembly for an assembled steel structure of a steel bridge building, characterized in that: include: A base plate (1), wherein the upper surface of the base plate (1) is fixedly connected with a fastening bolt (2), the side surface of the base plate (1) is fixedly connected with a fixing frame (3), a first fastening mechanism is arranged inside the fixing frame (3), the first fastening mechanism comprises an insertion rod (4), a convex ring (5) and a first spring (6), one end of the insertion rod (4) is arranged through the fixing frame (3) and is slidably connected, the through end of the insertion rod (4) is provided with a pyramid tip (7), the outer surface of the insertion rod (4) is fixedly connected with the convex ring (5), the side surface of the convex ring (5) is fixedly connected with the first spring (6), one end of the first spring (6) away from the convex ring (5) is fixedly connected with the base plate (1), the other end of the insertion rod (4) extends into the interior of the base plate (1), and the side surface of the insertion rod (4) is slidably connected with the base plate (1).

2. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 1, characterized in that: The upper surface of the base plate (1) is provided with a connecting plate (8), the lower surface of the connecting plate (8) is fixedly connected with an inserting column (9), and the bottom end of the inserting column (9) extends into the interior of the base plate (1) and passes through the inserting rod (4).

3. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 2, characterized in that: The upper surface of the connecting plate (8) is provided with a handle (10) fixedly connected thereto, and the handles (10) are provided in two pieces and are symmetrically distributed.

4. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 2, characterized in that: A limiting hole is provided on the side surface of the insertion rod (4), and the cross-sectional radius of the insertion column (9) is the same as the aperture size of the limiting hole.

5. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 1, characterized in that: The number of the first fastening mechanisms is six and they are symmetrically distributed.

6. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 1, characterized in that: A connecting block (12) is fixedly connected to the lower surface of the base plate (1); a fixing seat (11) is arranged below the base plate (1); a groove (13) is arranged inside the connecting block (12); a second fastening mechanism is arranged inside the groove (13); the second fastening mechanism comprises a second spring (14) and a wedge block (15); the bottom inner wall of the groove (13) is fixedly connected to the second spring (14); and one end of the second spring (14) away from the groove (13) is fixedly connected to the wedge block (15).

7. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 6, characterized in that: A clamping groove (16) is provided on the inner side wall of the fixing seat (11), and the wedge block (15) and the clamping groove (16) are adapted to each other.

8. The pre-buried fastening assembly for prefabricated steel structure of a steel bridge building according to claim 6, characterized in that: The number of the fixing seats (11) is four and they are arranged in a rectangular array, and the upper surfaces of the fixing seats (11) are in contact with the substrate (1).

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