Staggered clamping type prefabricated stair formwork connecting structure

Abstract

The utility model discloses a staggered clamping type prefabricated stair template connecting structure, which belongs to the technical field of PC stair construction and comprises a cast-in-place surface, a first stair and a second stair, the first stair and the second stair are mounted on the cast-in-place surface, an abutted seam with an L-shaped section is formed between the first stair and the second stair, and a connecting component is arranged in the abutted seam. The connecting assembly comprises a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece are fixed, the first connecting piece is located at the bottom of the abutted seam, and the second connecting piece is located at the corner of the L-shaped abutted seam. The first connecting piece and the second connecting piece are installed at the abutted seam, the first stair and the second stair are fastened through the first connecting piece and the second connecting piece, then the abutted seam is filled with the steel fiber reinforced concrete, and due to the fact that connection is firm, and the strength of the steel fiber reinforced concrete is high, the possibility that cracks appear at the abutted seam can be obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PC staircase construction, in particular to a staggered clamping type prefabricated staircase template connection structure. Background Art

[0002] At present, PC stairs have been widely used. Due to their heavy tonnage, the lifting tonnage of tower cranes on construction sites is insufficient. Therefore, PC stairs are often divided into two parts longitudinally during design to reduce the weight of a single PC staircase and facilitate lifting.

[0003] However, the PC stairs spliced ​​after hoisting will have a longitudinal joint. The traditional way is to fill it with materials such as foaming agents. However, after the plastering process is completed, cracks are prone to appear at the joint due to expansion and contraction, resulting in the need for repeated repairs. In addition, it is difficult to connect the two sections of PC stairs tightly by filling with materials such as foaming agents.

[0004] Therefore, we propose a staggered card-joined prefabricated stair formwork connection structure to solve the above-mentioned problems.

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of the present invention and therefore, it may include information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0006] The purpose of the utility model is to provide a staggered clamping type prefabricated staircase formwork connection structure to solve the problems in the current market raised by the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides a staggered clamping type prefabricated stair formwork connection structure, comprising a cast-in-place surface and a staircase 1 and a staircase 2 installed on the cast-in-place surface, wherein a joint with an "L"-shaped cross section is formed between the staircase 1 and the staircase 2, and a connection component is provided in the joint, wherein the connection component comprises a connection piece 1 and a connection piece 2;

[0008] The first connecting piece is fixed to the second connecting piece, and the first connecting piece is located at the bottom of the joint, and the second connecting piece is located at the corner of the "L"-shaped joint;

[0009] A filler is provided in the gap formed by the first staircase and the second staircase;

[0010] The thickness of the second connecting member is smaller than that of the first connecting member.

[0011] Preferably, the staircase 1 is composed of a first staircase body and an inclined plate located on the side of the first staircase body, and the first staircase body is provided with a circular first positioning hole;

[0012] The second staircase includes a second staircase body, a side of the second staircase body is provided with an inclined groove, and the inclined groove and the inclined plate are adapted to each other, and the second staircase body is provided with a second positioning hole;

[0013] The cast-in-place surface is provided with positioning columns, which are respectively located in the first positioning hole and the second positioning hole, and the positioning column located in the second positioning hole has a movable space in the horizontal direction.

[0014] Preferably, the connecting member 1 includes two “L”-shaped connecting rods 1 and 2;

[0015] The two ends of the connecting rod 2 are respectively fixed to the long end of the connecting rod 1;

[0016] The connecting member 2 comprises an L-shaped connecting rod 3, a connecting rod 4 and a connecting rod 5, one end of the connecting rod 4 is fixed to the long end of the connecting rod 3, and the other end is fixed to the connecting rod 5;

[0017] The short ends of the connecting rod 1 and the connecting rod 3 are fixed to each other;

[0018] The connecting piece 1 and the connecting piece 2 are overlapped on the inclined plate.

[0019] Preferably, a plug rod is provided on the side of the inclined plate, and a plug hole corresponding to the plug rod is provided at the inclined groove of the second staircase body;

[0020] The connecting member 1 also includes a collar, which is respectively fixed on the connecting rod 1 and the connecting rod 2, and the collar is sleeved on the plug rod;

[0021] The end of the insertion rod is inserted into the insertion hole.

[0022] Preferably, the connecting member is fastened to the second staircase body by bolts.

[0023] Preferably, the second connecting member is fastened to the first staircase body by means of a second bolt.

[0024] Preferably, the filler is steel fiber concrete.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] (1) The utility model installs the connector 1 and the connector 2 at the joint, thereby fastening the stairs 1 and the stairs 2, and then pours steel fiber concrete at the joint. Since the connection is relatively tight and the strength of the steel fiber concrete is relatively high, the possibility of cracks at the joint can be significantly reduced.

[0027] (2) The utility model fastens connector 1 and connector 2, and then respectively connects connector 1 and stair 2, and connector 2 and stair 1, so that stair 1 and stair 2 are tightly connected. When the steel fiber concrete is cured, the stability of the entire structure can be enhanced under the action of the ring and the plug.

[0028] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a staircase 1 of the utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the second staircase of the utility model;

[0032] Figure 4 It is a structural schematic diagram of the connection assembly of the utility model;

[0033] Figure 5 This is a structural schematic diagram of the connection assembly of the utility model installed on staircase one;

[0034] Figure 6 for Figure 5 A magnified view of the structure at center A;

[0035] Figure 7 It is a cross-sectional schematic diagram of two connecting parts of the utility model during grouting.

[0036] In the figure: 1, cast-in-place surface; 2, staircase 1; 3, staircase 2; 4, connector 1; 5, connector 2; 6, positioning column; 7, filler; 8, bolt 1; 9, bolt 2;

[0037] 201, first staircase body; 202, inclined plate; 203, first positioning hole; 204, insertion rod;

[0038] 301, second staircase body; 302, inclined groove; 303, second positioning hole; 304, plug hole;

[0039] 401, connecting rod 1; 402, connecting rod 2; 403, collar;

[0040] 501, connecting rod three; 502, connecting rod four; 503, connecting rod five. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.

[0042] See also Figure 1-Figure 7 , a staggered clamping type prefabricated stair formwork connection structure, comprising: a cast-in-place surface 1, a staircase 1 2, a staircase 2 3, a connection component, a positioning column 6 and a filler 7;

[0043] The positioning column 6 is vertically installed on the cast-in-place surface 1, and the stair 1 2 and the stair 2 3 are overlapped on the cast-in-place surface 1, and an "L"-shaped joint is formed between the stair 1 2 and the stair 2 3, and the connecting component is located in the joint. The filler 7 is located in the joint and the stair 1 2 and the stair 2 3 are tightly connected. The filler 7 is made of steel fiber concrete to increase the strength;

[0044] Staircase 1 2 is composed of a first staircase body 201 and an inclined plate 202 located on the side of the first staircase body 201. The first staircase body 201 is provided with a circular first positioning hole 203. Staircase 2 3 includes a second staircase body 301. The side of the second staircase body 301 is provided with an inclined groove 302, and the inclined groove 302 and the inclined plate 202 are adapted to each other. The second staircase body 301 is provided with a second positioning hole 303. The positioning column 6 is respectively located in the first positioning hole 203 and the second positioning hole 303, and the positioning column 6 located in the second positioning hole 303 has a horizontal activity space. The side of the inclined plate 202 is provided with an insertion rod 204, and the inclined groove 302 of the second staircase body 301 is provided with an insertion hole 304 corresponding to the insertion rod 204;

[0045] The connecting assembly includes a connecting piece 1 4 and a connecting piece 2 5. The thickness of the connecting piece 2 5 is smaller than that of the connecting piece 1 4. The connecting piece 1 4 is fixed to the connecting piece 2 5, and the connecting piece 1 4 is located at the bottom of the joint. The connecting piece 2 5 is located at the corner of the "L"-shaped joint. The connecting piece 1 4 includes two "L"-shaped connecting rods 1 401 and a connecting rod 2 402. The two ends of the connecting rod 2 402 are respectively fixed to the long end of the connecting rod 1 401. The connecting piece 2 5 includes an "L"-shaped connecting rod 3 501, a connecting rod 4 502 and a connecting rod 5 503. One end of the connecting rod 4 502 is fixed to the connecting rod 3 50 1, and the other end is fixed to the connecting rod five 503, the short ends of the connecting rod one 401 and the connecting rod three 501 are fixed to each other, the connecting piece one 4 and the connecting piece two 5 are overlapped on the inclined plate 202, the connecting piece one 4 also includes a ring 403, the ring 403 is respectively fixed on the connecting rod one 401 and the connecting rod two 402, and the ring 403 is sleeved on the plug rod 204, the end of the plug rod 204 is inserted in the socket 304, the connecting piece one 4 is fastened to the second staircase body 301 by bolt one 8, and the connecting piece two 5 is fastened to the first staircase body 201 by bolt two 9.

[0046] Working principle of this embodiment: During installation, first hoist staircase 2 onto the cast-in-place surface 1, and the corresponding positioning column 6 enters the first positioning hole 203, and then place the connecting assembly onto the inclined plate 202, wherein the connecting piece 4 is at the same height as the bottom surface of the inclined plate 202, and the connecting piece 2 5 is installed to the side of the first staircase body 201 by means of bolts 2 9, and then hoist staircase 2 3 onto the cast-in-place surface 1, and make the corresponding positioning column 6 enter the second positioning hole 303, and then move staircase 2 3 laterally to make the insertion rod 204 enter the insertion hole 304, and then fasten the connecting piece 4 to the top surface of the inclined groove 302 of staircase 2 3 by means of bolts 1 8. Since the thickness of the connecting piece 2 5 is less than that of the connecting piece 1 4, the filler 7 can be filled in through the joint, and the filler 7 can be rammed into the top of the connecting piece 4 and made dense. After the filler is solidified, a tight connection is achieved. When pouring the filler 7, first start from the bottom of the joint and increase step by step until the pouring is completed.

[0047] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0048] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0052] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A staggered clamping type prefabricated stair formwork connection structure, comprising a cast-in-place surface (1) and a staircase 1 (2) and a staircase 2 (3) installed on the cast-in-place surface (1), characterized in that: A joint with an L-shaped cross section is formed between the staircase 1 (2) and the staircase 2 (3), and a connecting component is provided in the joint, the connecting component comprising a connecting piece 1 (4) and a connecting piece 2 (5); The first connecting piece (4) is fixed to the second connecting piece (5), and the first connecting piece (4) is located at the bottom of the joint, and the second connecting piece (5) is located at the corner of the "L"-shaped joint; A filler (7) is provided in the gap formed by the first staircase (2) and the second staircase (3); The thickness of the second connecting member (5) is smaller than that of the first connecting member (4); The staircase 1 (2) is composed of a first staircase body (201) and an inclined plate (202) located on the side of the first staircase body (201), and the first staircase body (201) is provided with a circular first positioning hole (203); The second staircase comprises a second staircase body (301), a side of the second staircase body (301) is provided with an inclined groove (302), and the inclined groove (302) and the inclined plate (202) are adapted to each other, and the second staircase body (301) is provided with a second positioning hole (303); The cast-in-place surface (1) is provided with a positioning column (6), the positioning column (6) is respectively located in the first positioning hole (203) and the second positioning hole (303), and the positioning column (6) located in the second positioning hole (303) has a horizontal movable space; The filler (7) is steel fiber concrete.

2. The staggered clamping type prefabricated stair formwork connection structure according to claim 1 is characterized in that: The connecting member 1 (4) comprises two "L"-shaped connecting rods 1 (401) and 2 (402); The two ends of the second connecting rod (402) are respectively fixed to the long end of the first connecting rod (401); The connecting member 2 (5) comprises an L-shaped connecting rod 3 (501), a connecting rod 4 (502) and a connecting rod 5 (503), one end of the connecting rod 4 (502) is fixed to the long end of the connecting rod 3 (501), and the other end is fixed to the connecting rod 5 (503); The short ends of the connecting rod 1 (401) and the connecting rod 3 (501) are fixed to each other; The connecting member 1 (4) and the connecting member 2 (5) are overlapped on the inclined plate (202).

3. The staggered clamping type prefabricated stair formwork connection structure according to claim 2 is characterized in that: The side of the inclined plate (202) is provided with an insertion rod (204), and the inclined groove (302) of the second staircase body (301) is provided with an insertion hole (304) corresponding to the insertion rod (204); The connecting member 1 (4) further comprises a collar (403), wherein the collar (403) is respectively fixed on the connecting rod 1 (401) and the connecting rod 2 (402), and the collar (403) is sleeved on the insertion rod (204); The end of the insertion rod (204) is inserted into the insertion hole (304).

4. The staggered clamping type prefabricated stair formwork connection structure according to claim 1 is characterized in that: The connecting member 1 (4) is fastened to the second staircase body (301) by means of bolt 1 (8).

5. The staggered clamping type prefabricated stair formwork connection structure according to claim 1 is characterized in that: The second connecting member (5) is fastened to the first staircase body (201) by means of a second bolt (9).

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