Fabricated building connecting structure

Abstract

The utility model discloses an assembly type building connecting structure, and particularly relates to the technical field of assembly type buildings, the assembly type building connecting structure comprises a prefabricated stair body, one end of the prefabricated stair body is connected with an upper floor slab, the other end of the prefabricated stair body is connected with a bottom floor slab, and fasteners are arranged at the top of the upper floor slab and the top of the bottom floor slab. A main adaptive hole and an auxiliary adaptive hole which are matched with the fasteners are formed in the two ends of the prefabricated stair body respectively, and the fasteners comprise main connecting pieces and auxiliary connecting pieces; the main connecting piece comprises a first screw rod, a first nut is fixed to the top end of the first screw rod, and the first screw rod is sleeved with a first expansion pipe. According to the utility model, through the arrangement of the fasteners, the installation steps of the prefabricated staircase can be carried out separately, so that the prefabricated staircase can be quickly fixed on the upper floor and the lower floor in the process of assembling the prefabricated staircase, and installation workers are ensured not to be influenced by dust in the process of assembling the prefabricated staircase.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to an assembled building connection structure. Background Art

[0002] Prefabricated construction is an emerging construction method that achieves rapid construction and efficient construction through the assembly of prefabricated components. The prefabricated building structure includes prefabricated floor slabs, prefabricated beams, prefabricated columns, prefabricated stairs, etc. The connection method of the various prefabricated parts of prefabricated buildings is mainly to pre-fix them with steel bars, and then fix them through bolt connection, welding, anchoring, mortise and tenon connection, gluing, overlap connection and other methods.

[0003] Existing prefabricated stairs are mainly overlapped and bolted when in use. The two ends of the prefabricated stairs are overlapped on the reserved platforms of the upper and lower floor slabs, holes are drilled on the reserved platforms, and finally fixed with bolts. This connection structure requires the cooperation of multiple people. In the process of assembling the prefabricated stairs, multiple people are required to complete the operations of overlap, drilling, installing bolts and tightening bolts in a short time. The installation takes a long time, and a large amount of dust is generated during the drilling process. The assembly environment is harsh, which is not conducive to workers to carry out their work. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated building connection structure to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An assembled building connection structure, comprising a prefabricated staircase body, one end of the prefabricated staircase body is connected to an upper floor slab, and the other end is connected to a bottom floor slab, the tops of the upper floor slab and the bottom floor slab are both provided with fasteners, both ends of the prefabricated staircase body are respectively provided with a main adapting hole and a secondary adapting hole matched with the fastener, and the fastener comprises a main connecting piece and a secondary connecting piece;

[0007] The main connecting member comprises a first screw rod, a first nut is fixed to the top end of the first screw rod, a first expansion tube is sleeved on the outside of the first screw rod, and a first sleeve is connected to the end of the first screw rod;

[0008] The auxiliary connecting member comprises a second screw rod, the top end of the second screw rod is connected with a second nut, the outer portion of the second screw rod is sleeved with a second expansion tube, and the bottom end of the second screw rod is connected with a second sleeve.

[0009] Preferably, a load-bearing member is provided at the bottom of the prefabricated staircase body, a first through hole is opened at one end of the load-bearing member, a second through hole is opened at the other end, a square hole is opened in the middle of the load-bearing member, the first through hole corresponds to the main adapter hole, and the second through hole corresponds to the secondary adapter hole.

[0010] Preferably, a first leveling plate is provided at the top of one end of the prefabricated staircase body, and a second leveling plate is provided at the top of the other end. Casting holes are provided at the tops of the first leveling plate and the second leveling plate. The top of the first leveling plate is flush with the top of the upper floor slab, and the top of the second leveling plate is flush with the top of the lower floor slab.

[0011] Preferably, an insertion rod is provided at the bottom of the second nut, a socket matched with the insertion rod is provided at the top end of the second screw rod, and a cushion block is connected to the bottom end of the second screw rod.

[0012] Preferably, a protrusion is connected to the bottom end of the first screw rod, and a groove matching with the protrusion is formed on the top of the second nut.

[0013] Preferably, a compression-resistant layer is provided between the prefabricated staircase body, the load-bearing member, the end of the second leveling plate and the bottom floor slab.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. Through the provided fasteners, the fasteners can be pre-installed on the floor slabs. In the process of assembling the prefabricated stairs, the adapter holes at the ends of the prefabricated stairs are matched with the fasteners, and then the fasteners are locked. The installation steps of the prefabricated stairs can be carried out separately, so that in the process of assembling the prefabricated stairs, the prefabricated stairs can be quickly fixed on the upper and lower floor slabs, and it is ensured that in the process of assembling the prefabricated stairs, the installers will not be affected by dust, which is conducive to improving the working environment of the installers and facilitating the installers to carry out their work.

[0016] 2. By setting the load-bearing parts, the load-bearing parts are set at the bottom of the prefabricated staircase body. The load-bearing parts support the bottom of the prefabricated staircase body, which can share the pressure on the prefabricated staircase body, thereby increasing the service life of the prefabricated staircase body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an exploded view of the utility model;

[0020] Figure 3It is a three-dimensional diagram of the load-bearing member of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the fastener of the utility model;

[0022] Figure 5 It is an exploded view of the main connecting member of the utility model;

[0023] Figure 6 It is an exploded view of the auxiliary connecting member of the utility model;

[0024] Figure 7 It is a bottom view of the second nut of the utility model.

[0025] Description of reference numerals:

[0026] 1. Upper floor; 2. First leveling plate; 3. Casting hole; 4. Prefabricated staircase body; 5. Load-bearing member; 51. First through hole; 52. Square hole; 53. Second through hole; 6. Second leveling plate; 7. Compression layer; 8. Bottom floor; 9. Fastener; 91. Main connecting member; 911. First nut; 912. First screw; 913. Bump; 914. First expansion tube; 915. First casing; 92. Secondary connecting member; 921. Secondary nut; 922. Second expansion tube; 923. Second screw; 924. Second casing; 925. Pad; 926. Insert rod; 10. Main adapter hole; 11. Secondary adapter hole. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-Figure 7 An assembled building connection structure shown in the figure includes a prefabricated staircase body 4, one end of the prefabricated staircase body 4 is connected to an upper floor slab 1, and the other end is connected to a bottom floor slab 8, fasteners 9 are arranged on the top of the upper floor slab 1 and the bottom floor slab 8, and main adapting holes 10 and secondary adapting holes 11 cooperating with the fasteners 9 are respectively opened at both ends of the prefabricated staircase body 4, and the fasteners 9 include a main connecting member 91 and a secondary connecting member 92; the main connecting member 91 includes a first screw rod 912, a first nut 911 is fixed to the top end of the first screw rod 912, a first expansion tube 914 is sleeved on the outside of the first screw rod 912, and a first sleeve 915 is connected to the end of the first screw rod 912; the secondary connecting member 92 includes a second screw rod 923, a second nut 921 is connected to the top end of the second screw rod 923, a second expansion tube 922 is sleeved on the outside of the second screw rod 923, and a second sleeve 924 is connected to the bottom end of the second screw rod 923.

[0029] It should be noted that, during the assembly of the prefabricated staircase body 4, the staff used a crane to lift the prefabricated staircase body 4, and then placed the two ends of the prefabricated staircase body 4 on the top of the upper floor 1 and the top of the bottom floor 8 respectively. During the placement process, the fastener 9 passed through the main adapter hole 10 and the auxiliary adapter hole 11 at the top of the prefabricated staircase body 4, and finally the first nut 911 at the top of the main connecting member 91 was rotated, and the first nut 911 drove the first screw 912 to rotate. During the rotation of the first screw 912, the second nut 921 was driven to rotate, and the second nut 921 drove the second screw 923 to rotate. Since the outer surface of the first sleeve 915 has a convex strip, the first sleeve 915 will not rotate. During the rotation of the first screw 912, the first sleeve 915 is pulled upward. During this process, the first expansion tube 914 is squeezed and expanded, and the outer wall of the first expansion tube 914 spreads out to the surroundings, squeezes the inner walls of the main adapter hole 10 and the auxiliary adapter hole 11, and locks the prefabricated staircase body 4, so that the prefabricated staircase body 4 can no longer move upward.

[0030] like Figure 1-Figure 3 As shown, specifically, a load-bearing member 5 is provided at the bottom of the prefabricated staircase body 4, a first through hole 51 is provided at one end of the load-bearing member 5, a second through hole 53 is provided at the other end, a square hole 52 is provided in the middle of the load-bearing member 5, the first through hole 51 corresponds to the main adapter hole 10, and the second through hole 53 corresponds to the secondary adapter hole 11;

[0031] Specifically, the top of the load-bearing component 5 fits tightly with the bottom of the prefabricated stair body 4, and a plurality of holes are opened on the top of the load-bearing component 5. Steel bars (not shown in the figure) are arranged at the bottom of the prefabricated stair body 4, and the steel bars can be inserted downward into the holes, thereby facilitating the pre-installation of the load-bearing component 5 and the prefabricated stair body 4.

[0032] like Figure 1-Figure 2 As shown, a first leveling plate 2 is provided at the top of one end of the prefabricated staircase body 4, and a second leveling plate 6 is provided at the top of the other end. Casting holes 3 are provided at the tops of the first leveling plate 2 and the second leveling plate 6. The top of the first leveling plate 2 is flush with the top of the upper floor 1, and the top of the second leveling plate 6 is flush with the top of the bottom floor 8.

[0033] Specifically, after the two ends of the prefabricated staircase body 4 are overlapped on the upper floor 1 and the bottom floor 8 respectively, and are fastened by the fasteners 9, the first leveling plate 2 is placed on the top of one end of the prefabricated staircase body 4, the casting hole 3 on the top of the first leveling plate 2 is aligned with the first nut 911 protruding from the top of the fastener 9, and then concrete is injected into the casting hole 3. After the concrete dries, the fastener 9 can be protected to ensure that the fastener 9 is not exposed to the outside and does not rust.

[0034] The second leveling plate 6 is placed on the top of the other end of the prefabricated staircase body 4, and the fasteners 9 installed on the top of the ground floor slab 8 are protected in the same manner as described above.

[0035] like Figure 4-Figure 7 As shown, an insertion rod 926 is provided at the bottom of the second nut 921 , a plug hole matching with the insertion rod 926 is provided at the top of the second screw rod 923 , and a cushion block 925 is connected to the bottom end of the second screw rod 923 .

[0036] Specifically, a groove is provided at the top of the upper floor 1 and the top of the bottom floor 8, and the fastener 9 is inserted into the groove, the main connecting member 91 is located outside the groove, and half of the second expansion tube 922 of the auxiliary connecting member 92 is located in the groove, and the second nut 921 of the auxiliary connecting member 92 is located outside the groove, so that when the second nut 921 rotates, it will not rub against the inner wall of the groove and get stuck. During the rotation of the second nut 921, the second sleeve 924 is driven to move upward, and the second expansion tube 922 is squeezed by the second sleeve 924 and deformed. The outer wall of the second expansion tube 922 expands to the surroundings, so that it is clamped in the groove. At this time, the auxiliary connecting member 92 is fixed on the upper floor 1, so that the prefabricated staircase body 4 can be fixed above the upper floor 1 later.

[0037] like Figure 4-Figure 7 As shown, the bottom end of the first screw rod 912 is connected with a protrusion 913, and the top of the second nut 921 is provided with a groove matching with the protrusion 913;

[0038] During the connection process of the main connecting member 91 and the secondary connecting member 92, the protrusion 913 at the bottom end of the first screw rod 912 is inserted into the groove at the top of the second nut 921. During the rotation of the main connecting member 91, the secondary connecting member 92 can be driven to rotate synchronously to ensure that the first expansion tube 914 and the second expansion tube 922 expand synchronously. After the first expansion tube 914 expands, it locks the prefabricated staircase body 4 and the load-bearing member 5. After the second expansion tube 922 expands, it locks the upper floor 1 and the load-bearing member 5, which is conducive to the upper floor 1, the load-bearing member 5 and the prefabricated staircase body 4.

[0039] like Figure 1 As shown, a pressure-resistant layer 7 is arranged between the ends of the prefabricated staircase body 4, the load-bearing parts 5 and the second leveling plate 6 and the bottom floor slab 8; specifically, the pressure of the ends of the prefabricated staircase body 4, the load-bearing parts 5 and the second leveling plate 6 on the bottom floor slab 8 is reduced by the pressure-resistant layer 7, and friction between the prefabricated staircase body 4, the load-bearing parts 5 and the second leveling plate 6 and the bottom floor slab 8 is avoided, and the distance between the prefabricated staircase body 4, the load-bearing parts 5 and the second leveling plate 6 and the bottom floor slab 8 is maintained to avoid gaps, which is beneficial to protecting the bottom floor slab 8.

[0040] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An assembled building connection structure, comprising a prefabricated staircase body (4), one end of the prefabricated staircase body (4) being connected to an upper floor slab (1) and the other end being connected to a lower floor slab (8), characterized in that: The tops of the upper floor slab (1) and the bottom floor slab (8) are both provided with fasteners (9), and both ends of the prefabricated staircase body (4) are respectively provided with a main adapting hole (10) and a secondary adapting hole (11) that cooperate with the fasteners (9), and the fasteners (9) include a main connecting piece (91) and a secondary connecting piece (92); The main connecting member (91) comprises a first screw rod (912), a first nut (911) is fixed to the top end of the first screw rod (912), a first expansion tube (914) is sleeved on the outside of the first screw rod (912), and a first sleeve (915) is connected to the end of the first screw rod (912); The secondary connecting member (92) comprises a second screw rod (923), the top end of the second screw rod (923) is connected to a second nut (921), the exterior of the second screw rod (923) is sleeved with a second expansion tube (922), and the bottom end of the second screw rod (923) is connected to a second sleeve (924).

2. The assembled building connection structure according to claim 1, characterized in that: A load-bearing member (5) is provided at the bottom of the prefabricated staircase body (4); a first through hole (51) is provided at one end of the load-bearing member (5), and a second through hole (53) is provided at the other end; a square hole (52) is provided in the middle of the load-bearing member (5); the first through hole (51) corresponds to the main adapting hole (10), and the second through hole (53) corresponds to the secondary adapting hole (11).

3. The assembled building connection structure according to claim 2, characterized in that: A first leveling plate (2) is provided at the top of one end of the prefabricated staircase body (4), and a second leveling plate (6) is provided at the top of the other end. Casting holes (3) are provided at the tops of the first leveling plate (2) and the second leveling plate (6). The top of the first leveling plate (2) is flush with the top of the upper floor slab (1), and the top of the second leveling plate (6) is flush with the top of the lower floor slab (8).

4. The assembled building connection structure according to claim 1, characterized in that: The bottom of the second nut (921) is provided with an insertion rod (926), the top of the second screw rod (923) is provided with a plug hole matching the insertion rod (926), and the bottom end of the second screw rod (923) is connected to a cushion block (925).

5. The assembled building connection structure according to claim 1, characterized in that: The bottom end of the first screw rod (912) is connected to a protrusion (913), and the top of the second nut (921) is provided with a groove matching the protrusion (913).

6. The assembled building connection structure according to claim 3, characterized in that: A compression-resistant layer (7) is provided between the ends of the prefabricated staircase body (4), the load-bearing member (5), and the second leveling plate (6) and the bottom floor slab (8).

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