A connecting device for precast channel steel beams and precast steel columns in prefabricated buildings

Abstract

The present invention discloses a connecting device for a precast channel steel beam and a precast steel column of an assembled building, belonging to the technical field of precast building structures. It includes a precast steel column, a precast channel steel beam, and a precast punched self-locking part connecting the precast steel column and the precast channel steel beam. The precast channel steel beam and the precast punched self-locking part are connected through a sliding lock cover, and the precast steel column and the precast punched self-locking part are connected through bolts; there are two precast channel steel beams and two precast punched self-locking parts, which are respectively arranged on both sides of the precast steel column, and the two precast punched self-locking parts are connected through bolts. By adopting the above-mentioned connecting device for a precast channel steel beam and a precast steel column of an assembled building, the present invention achieves efficient assembly and disassembly of the assembled building, reduces costs, greatly reduces the construction difficulty, and improves the assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building structures, and more particularly to a connecting device for prefabricated channel steel beams and prefabricated steel columns used in prefabricated buildings. Background Art

[0002] Prefabricated frame structures have the advantages of high stiffness, high bearing capacity, good integrity, etc., and also have the advantages of fast construction speed, material and labor savings. The basic idea of prefabricated frame structures is to divide the frame structure into columns, beams and floor slabs. After prefabricating the columns, beams and floor slabs in a prefabricated component factory, they are then transported to the construction site for installation and connection to form a prefabricated frame structure. When the prefabricated columns, prefabricated beams and prefabricated floor slabs form a frame structure, the performance of the connection nodes between the prefabricated beams and the prefabricated floor slabs directly affects the overall performance of the structure. Therefore, it is necessary to design a connecting structure for prefabricated channel steel beams and prefabricated steel columns to enable the connection nodes between the prefabricated beams and the prefabricated floor slabs to have good mechanical properties.

[0003] At present, most connections between columns and beams use a large number of bolts, welding and bolt expansion agents for connection. However, in this connection method, bolts at each hole position have to be reinforced with expansion agents, resulting in a large demand for bolts. At the same time, the construction is cumbersome and the disassembly is inconvenient. After using the expansion agent, it will lead to impossible disassembly and only forced demolition, resulting in a relatively high production cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a connecting device for prefabricated channel steel beams and prefabricated steel columns used in prefabricated buildings, to solve the problems raised in the above background art, avoid the use of a large number of bolts and expansion agents, thereby facilitating installation and disassembly, reducing the construction difficulty while reducing the production cost, and at the same time ensuring the assembly efficiency.

[0005] To achieve the above object, the present invention provides a connecting device for prefabricated channel steel beams and prefabricated steel columns used in prefabricated buildings, including a prefabricated steel column, a prefabricated channel steel beam, and a prefabricated punched self-locking member connecting the prefabricated steel column and the prefabricated channel steel beam. The prefabricated channel steel beam and the prefabricated punched self-locking member are connected by a sliding lock cover, and the prefabricated steel column and the prefabricated punched self-locking member are connected by bolts; two prefabricated channel steel beams and two prefabricated punched self-locking members are provided, respectively arranged on both sides of the prefabricated steel column, and the two prefabricated punched self-locking members are connected by bolts.

[0006] Preferably, a first groove is opened from the top on one side of the prefabricated punched self-locking member close to the prefabricated channel steel beam, a second groove is opened below the first groove, and the first groove and the second groove are communicated; two spring screws are arranged on the side wall of the first groove, holes corresponding to the spring screws are opened in the sliding lock cover, a spring is fixedly arranged at one inner end of the holes, and the sliding lock cover is inserted into the first groove.

[0007] Preferably, several first circular grooves are formed on one side of the precast grooved steel beam connected to the precast punched self-locking part. A first spring groove is arranged inside the sliding lock cover, a first spring is arranged inside the first spring groove, and a first steel ball corresponding to the first circular groove is arranged at the bottom end of the first spring.

[0008] Preferably, inner grooves are formed on both sides at the top end of the first groove. Springs are fixedly connected to the bottom ends of the inner grooves, and the other ends of the springs are fixedly connected with triangular clamping blocks.

[0009] Preferably, a third groove is formed on the back side of the first groove on the precast punched self-locking part. Several second circular grooves are formed at the top end of one side of the precast punched self-locking part close to the precast steel column. A second spring groove is arranged at the inner top end of the third groove, a second spring is arranged inside the second spring groove, and a second steel ball corresponding to the second circular groove is arranged at the bottom end of the second spring.

[0010] Preferably, concave stripes are formed at the bottom end of the third groove, and convex stripes adapted to the concave stripes are formed at the bottom end of one side of the precast punched self-locking part connected to the precast steel column.

[0011] Preferably, corresponding first bolt holes are formed on the outer side wall of the third groove and the outer side wall of one side of the precast punched self-locking part connected to the precast steel column.

[0012] Preferably, fourth grooves are formed on both sides of the precast steel column and are connected to the precast punched self-locking part connecting piece. Bolt limiting pieces are welded above and below the precast punched self-locking part connecting piece, and corresponding second bolt holes are formed above and below the bolt limiting pieces and the fourth grooves.

[0013] Therefore, by adopting the above-mentioned connecting device for the precast grooved steel beam and the precast steel column of the prefabricated building, compared with the existing steel structure connection, the specific beneficial effects are as follows:

[0014] (1) The connection is firm and reliable: Through the cooperation of the sliding lock cover, the precast punched self-locking part and various structures such as springs, steel balls, clamping blocks, grooves and bolts, the connection and locking between the precast grooved steel beam and the precast steel column are realized, effectively improving the firmness and reliability of the connection, being able to bear large loads, and ensuring the safety of the prefabricated building structure.

[0015] (2) Convenient and efficient installation and disassembly: The structural design of this connection device facilitates the on-site installation of precast components. The connection and fixation operations between the sliding lock cover and the precast drilled self-locking parts, and between the precast drilled self-locking parts and the precast steel column are simple, without complex welding or other special processes, enabling portable modular assembly, reducing on-site construction time and workload, and improving the assembly efficiency. At the same time, this structural design is also convenient for disassembly. Only by pulling out the bolts, the mechanical biting force will automatically loosen and can be directly disassembled, reducing the difficulty of disassembly construction.

[0016] (3) Accurate positioning: The precise fit between various structures, such as the first steel ball and the first circular groove, the second steel ball and the second circular groove, the triangular block, etc., can achieve the accurate positioning of precast components during the installation process, ensuring the connection accuracy and quality, and being conducive to improving the overall assembly accuracy of prefabricated buildings.

[0017] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Brief Description of the Drawings

[0018] Figure 1 is the first-angle schematic diagram of the overall connection structure of the embodiment of the present invention;

[0019] Figure 2 is the second-angle schematic diagram of the overall connection structure of the embodiment of the present invention;

[0020] Figure 3 is the overall exploded structure schematic diagram of the embodiment of the present invention;

[0021] Figure 4 is the first-angle structural schematic diagram of the precast drilled self-locking part of the embodiment of the present invention;

[0022] Figure 5 is the second-angle structural schematic diagram of the precast drilled self-locking part of the embodiment of the present invention;

[0023] Figure 6 is the structural schematic diagram of the sliding lock cover of the embodiment of the present invention;

[0024] Figure 7 is the structural schematic diagram of the precast drilled self-locking part of the embodiment of the present invention;

[0025] Reference Signs

[0026] 1. Prefabricated steel column; 2. Prefabricated channel steel beam; 3. Prefabricated punched self-locking part; 4. Sliding lock cover; 5. First groove; 6. Second groove; 7. Spring screw; 8. Hole; 9. First circular groove; 10. First spring groove; 11. First spring; 12. First steel ball; 13. Triangular clamping block; 14. Third groove; 15. Second circular groove; 16. Concave stripe; 17. First bolt hole; 18. Fourth groove; 19. Bolt limiting piece; 20. Second bolt hole; 21. Second spring groove; 22. Second spring; 23. Second steel ball. Detailed implementation mode

[0027] The technical solution of the present invention will be further described below through the accompanying drawings and embodiments.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0030] Embodiment

[0031] As Figures 1-7 shown, this embodiment provides a connecting device for prefabricated channel steel beams and prefabricated steel columns for prefabricated buildings, including a prefabricated steel column 1, two prefabricated channel steel beams 2 and two prefabricated punched self-locking parts 3. Among them, the prefabricated steel column 1 is a vertical support member of the prefabricated building, bearing the vertical load of the entire prefabricated building and providing connection support points for components such as the prefabricated channel steel beam 2; the prefabricated channel steel beam 2 is a horizontal load-bearing member in the prefabricated building, used to bear the lateral load and transfer the load to the prefabricated steel column 1. The two sides of the prefabricated steel column 1 are respectively and reliably connected to the two prefabricated channel steel beams 2 through the prefabricated punched self-locking parts 3.

[0032] The prefabricated grooved steel beam 2 and the prefabricated perforated self-locking part 3 are connected by a sliding lock cover 4. On one side of the prefabricated perforated self-locking part 3 close to the prefabricated grooved steel beam 2, a first groove 5 for accommodating the sliding lock cover 4 is opened from the top. Below the first groove 5, a second groove 6 for inserting the prefabricated grooved steel beam 2 is opened, and the first groove 5 and the second groove 6 are communicated. Two spring screws 7 are arranged on the side wall of the first groove 5, and holes 8 corresponding to the spring screws 7 are opened in the sliding lock cover 4. Through the cooperation of the spring screws 7 and the holes 8, the sliding lock cover 4 can be inserted into the first groove 5 along the direction of the spring screws 7 to realize the structural connection. In addition, a spring is fixedly arranged at one inner end of the hole 8, and inner grooves are opened on both sides of the top end of the first groove 5. Springs are also fixedly connected to the bottom ends of the inner grooves. The other ends of the springs are fixedly connected to triangular blocks 13. When the spring screws 7 are inserted into the holes 8, an elastic force is generated to push outwards. At this time, the triangular blocks 13 are stuck on the outside, thereby realizing the further fixation of the sliding lock cover 4, enhancing the connection stability, and preventing the sliding lock cover 4 from sliding off.

[0033] On one side of the prefabricated grooved steel beam 2 connected to the prefabricated perforated self-locking part 3, three first circular grooves 9 are opened. A first spring groove 10 is arranged in the sliding lock cover 4, a first spring 11 is arranged in the first spring groove 10, and a first steel ball 12 corresponding to the first circular groove 9 is arranged at the bottom end of the first spring 11. When the upper end of the prefabricated grooved steel beam 2 is inserted into the sliding lock cover 4, the first steel ball 12 is embedded into the first circular groove 9 under the action of the first spring 11, realizing the locking of the prefabricated grooved steel beam 2 and the sliding lock cover 4 and preventing relative sliding between the two.

[0034] A third groove 14 is arranged on the back side of the first groove 5 opened on the prefabricated perforated self-locking part 3, and the connection structure of a second spring groove 21, a second spring 22 and a second steel ball 23 arranged inside is the same as the connection structure of the first spring groove 10, the first spring 11 and the first steel ball 12. Three second circular grooves 15 corresponding to the second steel balls are opened at the top end of one side of the prefabricated perforated self-locking part 3 close to the prefabricated steel column 1. A second spring groove 21 is arranged at the inner top end of the third groove 14, a second spring 22 is arranged in the second spring groove 21, and a second steel ball 23 corresponding to the second circular groove 15 is arranged at the bottom end of the second spring 22. When one side of the prefabricated perforated self-locking part 3 is inserted into the third groove 14 of another prefabricated perforated self-locking part 3, the second steel ball is embedded into the second circular groove 15 under the action of the second spring 22, realizing the preliminary positioning and locking of the two prefabricated perforated self-locking parts 3 and the prefabricated steel column 1. At the same time, a concave stripe 16 is opened at the bottom end of the third groove 14, and a convex stripe corresponding to the concave stripe 16 is opened at the bottom end of one side of the prefabricated perforated self-locking part 3 connected to the prefabricated steel column 1. The convex stripe on one prefabricated perforated self-locking part 3 fits with the concave stripe 16 at the bottom end of the third groove 14 on the other prefabricated perforated self-locking part 3, which can increase the mechanical biting force and improve the connection stability.

[0035] On the outer side wall of the third groove 14 and on the outer side wall of one side of the prefabricated perforated self-locking part 3 connected to the prefabricated steel column 1, a first bolt hole 17 is opened, and then a bolt is inserted to achieve the tight connection of the two prefabricated perforated self-locking parts 3.

[0036] On both sides of the prefabricated steel column 1, a fourth groove 18 is opened and connected to one side of the connecting part of the prefabricated perforated self-locking part 3. Arc-shaped bolt limiting pieces 19 are welded above and below the connecting part of the prefabricated perforated self-locking part 3. Corresponding second bolt holes 20 are opened above and below the bolt limiting piece 19 and the fourth groove 18. By passing a bolt through the second bolt hole 20, the prefabricated perforated self-locking part 3 is further fixed to the prefabricated steel column 1. At the same time, the bolt limiting piece 19 plays a role in restricting the position of the bolt and preventing the bolt from loosening.

[0037] Working principle: When assembling the prefabricated steel column 1 and the prefabricated grooved steel beam 2, first align one side of a prefabricated perforated self-locking part 3 close to the prefabricated steel column 1 with the fourth groove 18 on the side of the prefabricated steel column 1, and align the bolt limiting piece 19 on the connecting part of the prefabricated perforated self-locking part 3 with the second bolt holes 20 above and below the fourth groove 18. Then, pass a bolt through the second bolt hole 20 to preliminarily fix the prefabricated perforated self-locking part 3 on the prefabricated steel column 1; insert one side of another prefabricated perforated self-locking part 3 into the third groove 14 of the prefabricated perforated self-locking part 3 already installed on the prefabricated steel column 1, so that the second steel ball at the bottom of the second spring corresponds to the second circular groove 15 at the top of one side of the prefabricated perforated self-locking part 3 close to the prefabricated steel column 1. The second steel ball is embedded in the second circular groove 15 under the action of the second spring to achieve the preliminary positioning and locking of the two prefabricated perforated self-locking parts 3. At the same time, the lower convex stripes on one side of the prefabricated perforated self-locking part 3 fit with the lower concave stripes 16 at the bottom of the third groove 14 of the prefabricated perforated self-locking part 3 on the other side to increase the mechanical biting force. Then, pass a bolt through the first bolt hole 17 on the outer side wall of the third groove 14 and on the outer side wall of one side of the prefabricated perforated self-locking part 3 connected to the prefabricated steel column 1 to tightly connect the two prefabricated perforated self-locking parts 3 together, tighten all the bolts, and complete the connection of the prefabricated steel column 1 and the two prefabricated perforated self-locking parts 3. Then, insert one end of the prefabricated grooved steel beam 2 into the second groove 6 of the prefabricated perforated self-locking part 3, and then insert the sliding lock cover 4 along the spring screw rod 7 on the side wall of the first groove 5 into the first groove 5. When the sliding lock cover 4 is inserted, the first steel ball 12 is embedded in the first circular groove 9 of the prefabricated grooved steel beam 2 under the action of the first spring 11 to achieve the preliminary locking of the prefabricated grooved steel beam 2 and the sliding lock cover 4. At the same time, a stable force will be formed between the outward elastic force given by the spring in the hole 8 and the triangular block 13 to further fix the sliding lock cover and prevent it from sliding out and falling off.

[0038] Therefore, the present invention adopts the above-mentioned connecting device for precast channel steel beams and precast steel columns of prefabricated buildings, avoiding the use of a large number of bolts and expansion agents, and achieving efficient assembly and disassembly of prefabricated buildings, greatly reducing the construction difficulty while reducing the cost and improving the assembly efficiency.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A connecting device for precast channel steel beams and precast steel columns in prefabricated buildings, characterized in that: It includes prefabricated steel columns, prefabricated channel steel beams, and prefabricated punched self-locking parts connecting the prefabricated steel columns and the prefabricated channel steel beams. The prefabricated channel steel beam and the prefabricated punched self-locking part are connected by a sliding lock cover, and the prefabricated steel column and the prefabricated punched self-locking part are connected by bolts; there are two prefabricated channel steel beams and two prefabricated punched self-locking parts, which are respectively arranged on both sides of the prefabricated steel column, and the two prefabricated punched self-locking parts are connected by bolts; On one side of the prefabricated punched self-locking part close to the prefabricated channel steel beam, a first groove is opened from the top, a second groove is opened below the first groove, and the first groove and the second groove are communicated; two spring screws are arranged on the side wall of the first groove, holes corresponding to the spring screws are opened in the sliding lock cover, a spring is fixedly arranged at one inner end of the hole, and the sliding lock cover is inserted into the first groove.

2. The connecting device for precast channel steel beams and precast steel columns used in prefabricated buildings according to claim 1, characterized in that: On one side of the prefabricated channel steel beam connected to the prefabricated punched self-locking part, a number of first circular grooves are opened, a first spring groove is arranged in the sliding lock cover, a first spring is arranged in the first spring groove, and a first steel ball corresponding to the first circular groove is arranged at the bottom end of the first spring.

3. The connecting device for precast channel steel beams and precast steel columns for prefabricated buildings according to claim 1, characterized in that: Inner grooves are opened on both sides at the top end of the first groove, a spring is fixedly connected to the bottom end of the inner groove, and the other end of the spring is fixedly connected to a triangular block.

4. A connecting device for precast channel steel beams and precast steel columns used in prefabricated buildings according to claim 1, characterized in that: A third groove is opened on the back side of the first groove on the prefabricated punched self-locking part, a number of second circular grooves are opened at the top end of the side of the prefabricated punched self-locking part close to the prefabricated steel column, a second spring groove is arranged at the inner top end of the third groove, a second spring is arranged in the second spring groove, and a second steel ball corresponding to the second circular groove is arranged at the bottom end of the second spring.

5. The connecting device for precast channel steel beams and precast steel columns for prefabricated buildings according to claim 4, characterized in that: A concave stripe is opened at the bottom end of the third groove, and a convex stripe adapted to the concave stripe is opened at the bottom end of the side of the prefabricated punched self-locking part connecting the prefabricated steel column.

6. The connecting device for precast trough steel beams and precast steel columns for prefabricated buildings according to claim 4, characterized in that: Corresponding first bolt holes are opened on the outer side wall of the third groove and the outer side wall of the side of the prefabricated punched self-locking part connecting the prefabricated steel column.

7. A connecting device for precast trough steel beams and precast steel columns used in prefabricated buildings according to claim 1, characterized in that: Fourth grooves are opened on both sides of the prefabricated steel column and are connected to the prefabricated punched self-locking part connecting piece. Bolt limit pieces are welded above and below the prefabricated punched self-locking part connecting piece, and corresponding second bolt holes are opened above and below the bolt limit piece and the fourth groove.

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