Handrail structure

Abstract

The utility model provides a handrail structure, which comprises a base, a handrail, a first connecting piece and a second connecting piece, the pre-embedded screw rod is partially pre-embedded in the base; the prefabricated breast board is provided with a preformed hole allowing the part, extending out of the base, of the embedded screw to penetrate through, and is provided with a second positioning piece matched with the first positioning piece; and the nut is in threaded connection with the part, extending out of the preformed hole, of the embedded screw. The problems that a handrail structure is low in construction efficiency and construction safety can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway railing construction, in particular to a railing structure. Background Art

[0002] With the development of my country's transportation industry, more and more highways and municipal roads need to pass under or over railways. As an important part of the underpass, the frame bridge needs to be equipped with corresponding railings to ensure the safety of railway driving. However, most traditional railway railings are reinforced concrete railings constructed by cast-in-place construction. Specifically, the cast-in-place railings of existing railway frame bridges are made by pre-embedding the corresponding steel bars when casting the main body of the frame bridge structure, and then arranging the formwork after the main body is completed, and tying the remaining steel bars to cast in place. The process of casting the railings includes formwork erection, railing steel bar tying, concrete mixing, formwork removal, etc. There are many processes, long time consumption, and a lot of material accumulation, which not only brings great safety hazards to railway operations, but also makes it difficult to ensure the safety of operators during construction.

[0003] Therefore, it is necessary to develop a new railing structure to improve the problems of low construction efficiency and low construction safety of the railing structure. Utility Model Content

[0004] The utility model aims to provide a railing structure to solve the problems of low construction efficiency and low construction safety of the existing railing structure.

[0005] In order to solve the above technical problems, the utility model provides a railing structure, including: a base, having a first positioning member; an embedded screw, partially embedded in the base; a prefabricated railing, having a reserved hole for the portion of the embedded screw extending out of the base to pass through, and having a second positioning member matching the first positioning member; a nut, threadedly connected to the portion of the embedded screw extending out of the reserved hole.

[0006] Optionally, the first positioning member and the second positioning member are mortise and tenon structures.

[0007] Optionally, the first positioning member is a positioning protrusion provided on the base, and the second positioning member is a positioning groove provided on the prefabricated guardrail, and the positioning protrusion cooperates with the positioning groove.

[0008] Optionally, a reinforcing member is provided inside the base and below the first positioning member, and the reinforcing member extends into the first positioning member.

[0009] Optionally, it also includes skeleton steel bars arranged in the base, and the reinforcement is welded to the skeleton steel bars.

[0010] Optionally, the second positioning member is arranged along the length direction of the prefabricated guardrail.

[0011] Optionally, a pad is also included, and the pad is arranged between the embedded screw and the nut.

[0012] Optionally, it also includes a cast-in-place concrete block, which is coated on the portion of the embedded screw extending outside the prefabricated guardrail and the nut.

[0013] Optionally, the prefabricated guardrail has a plurality of convex ridges arranged in sequence, and the cast-in-place concrete block has a plurality of structural grooves arranged in sequence and matching with the convex ridges.

[0014] Optionally, the cross-sections of the plurality of ridges are connected in a sawtooth shape.

[0015] The utility model provides a railing structure with the following beneficial effects:

[0016] Since the base has a first positioning piece and the prefabricated guardrail has a second positioning piece that cooperates with the first positioning piece, the position of the prefabricated guardrail on the base can be positioned by the cooperation of the first positioning piece and the second positioning piece, thereby improving the assembly efficiency of the railing structure; since the embedded screw is partially embedded in the base, the prefabricated guardrail has a reserved hole for the portion of the embedded screw extending out of the base to pass through, and the nut is threadedly connected to the portion of the embedded screw extending out of the reserved hole, therefore, the prefabricated guardrail can be locked to the base by the nut and the embedded screw, thereby making the railing structure easy to install and highly safe, and convenient for later maintenance; in addition, since the prefabricated guardrail is a prefabricated part, the assembly efficiency of the railing structure can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a prefabricated guardrail in the guardrail structure in an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 Sectional view of the prefabricated guardrail in the middle guardrail structure along line 1-1;

[0019] Figure 3 is a side view of the railing structure in the embodiment of the utility model;

[0020] Figure 4 yes Figure 3 A local enlarged schematic diagram at point A.

[0021] Description of reference numerals:

[0022] 100-base; 110-first positioning piece; 200-embedded screw; 300-prefabricated guardrail; 310-board body; 320-board seat; 321-convex ridge; 330-reserved hole; 340-second positioning piece; 400-nut; 500-pad; 600-cast-in-place concrete block; 610-structural groove; 700-concrete layer; 800-reinforcement piece; 900-skeleton reinforcement. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 3 is a front view of a prefabricated guardrail 300 in a guardrail structure in an embodiment of the present utility model. Figure 2 yes Figure 1 A cross-sectional view of the prefabricated guardrail 300 in the middle guardrail structure along line 1-1, Figure 3 is a side view of the railing structure in the embodiment of the utility model, Figure 4 yes Figure 3 In the partially enlarged schematic diagram at A, this embodiment provides a railing structure, including: a base 100, having a first positioning member 110; an embedded screw 200, partially embedded in the base 100; a prefabricated railing 300, having a reserved hole 330 for the portion of the embedded screw 200 extending out of the base 100 to pass through, and having a second positioning member 340 that cooperates with the first positioning member 110; a nut 400, threadedly connected to the portion of the embedded screw 200 extending out of the reserved hole 330.

[0030] Since the base 100 has a first positioning member 110 and the prefabricated guardrail 300 has a second positioning member 340 that cooperates with the first positioning member 110, the position of the prefabricated guardrail 300 on the base 100 can be positioned by the cooperation of the first positioning member 110 and the second positioning member 340, thereby improving the assembly efficiency of the railing structure; since the embedded screw 200 is partially embedded in the base 100, the prefabricated guardrail 300 has a reserved hole 330 for the portion of the embedded screw 200 extending out of the base 100 to pass through, and the nut 400 is threadedly connected to the portion of the embedded screw 200 extending out of the reserved hole 330, therefore, the prefabricated guardrail 300 can be locked on the base 100 by the nut 400 and the embedded screw 200, thereby making the railing structure easy to install and highly safe, and convenient for later maintenance; in addition, since the prefabricated guardrail 300 is a prefabricated component, the assembly efficiency of the railing structure can be further improved.

[0031] In this embodiment, the first positioning member 110 and the second positioning member 340 are mortise and tenon structures.

[0032] Specifically, the first positioning member 110 is a positioning protrusion provided on the base 100, and the second positioning member 340 is a positioning groove provided on the prefabricated guardrail 300, and the positioning protrusion cooperates with the positioning groove.

[0033] The second positioning member 340 is arranged along the length direction of the prefabricated guardrail 300, that is, along the length direction of the guardrail structure.

[0034] In this embodiment, the prefabricated guardrail 300 includes a plate body 310 and a plate seat 320 , the plate body 310 is disposed on the plate seat 320 , the reserved hole 330 is disposed on the plate seat 320 , and the second positioning member 340 is disposed on the plate seat 320 .

[0035] Preferably, the prefabricated screw is a U-shaped screw.

[0036] Preferably, the railing structure further includes a pad 500, and the pad 500 is disposed between the embedded screw and the nut 400, so that the assembly strength and stability can be improved.

[0037] Preferably, the backing plate 500 is a steel plate.

[0038] Preferably, the railing structure further includes a cast-in-place concrete block 600 , and the cast-in-place concrete block 600 is coated on the portion of the embedded screw 200 extending outside the prefabricated railing 300 and the nut 400 .

[0039] Preferably, the prefabricated guardrail 300 has a plurality of sequentially arranged ridges 321, and the cast-in-place concrete block 600 has a plurality of sequentially arranged structural grooves 610 that match the ridges 321. In this way, the stability of the connection between the cast-in-place concrete block 600 and the prefabricated guardrail 300 can be improved.

[0040] Preferably, the cross-sections of the plurality of ridges 321 are connected in a sawtooth shape.

[0041] A concrete layer 700 is filled between the reserved hole 330 and the embedded screw 200 .

[0042] Preferably, the railing structure has a reinforcing member 800 disposed inside the base 100 and below the first positioning member 110, and the reinforcing member 800 extends into the first positioning member 110. In this way, the strength of the first positioning member 110 can be increased.

[0043] Specifically, the first positioning member 110 includes two angle steels welded together in a T-shape.

[0044] The railing structure further includes a skeleton steel bar 900 disposed in the base 100 , and the reinforcement 800 is welded to the skeleton steel bar 900 .

[0045] In this embodiment, the base 100 is preferably a box bridge top plate.

[0046] In this embodiment, the construction process of the railing structure is as follows:

[0047] In the first step, the top plate of the box bridge is constructed, and a first positioning member 110 and a pre-embedded screw 200 are formed on the top plate of the box bridge.

[0048] In the second step, the prefabricated guardrail 300 is hoisted above the top plate of the box bridge, so that the first positioning member 110 and the second positioning member 340 are aligned, and the reserved hole 330 is aligned with the embedded screw 200.

[0049] The third step is to set a pad 500 at the position where the embedded screw 200 extends out of the box bridge top plate, and lock the nut 400 on the embedded screw 200, and make the pad 500 between the nut 400 and the prefabricated guardrail 300.

[0050] The fourth step is to pour the cast-in-place concrete blocks 600 on the prefabricated guardrail 300 .

[0051] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A railing structure, characterized in that: include: A base having a first positioning member; A pre-embedded screw rod, part of which is pre-embedded in the base; The prefabricated guardrail has a reserved hole for the portion of the embedded screw extending outside the base to pass through, and has a second positioning member that matches the first positioning member; The nut is threadedly connected to the portion of the embedded screw rod extending out of the reserved hole.

2. The railing structure according to claim 1, characterized in that: The first positioning member and the second positioning member are mortise and tenon structures.

3. The railing structure according to claim 2, characterized in that: The first positioning member is a positioning protrusion arranged on the base, and the second positioning member is a positioning groove arranged on the prefabricated guardrail, and the positioning protrusion matches the positioning groove.

4. The railing structure according to claim 3, characterized in that: A reinforcing member is provided inside the base and below the first positioning member, and the reinforcing member extends into the first positioning member.

5. The railing structure according to claim 4, characterized in that: It also includes a skeleton steel bar arranged in the base, and the reinforcement is welded to the skeleton steel bar.

6. The railing structure according to claim 1, characterized in that: The second positioning member is arranged along the length direction of the prefabricated guardrail.

7. The railing structure according to claim 1, characterized in that: It also includes a backing plate, which is arranged between the embedded screw and the nut.

8. The railing structure according to claim 1, characterized in that: It also includes a cast-in-place concrete block, which covers the portion of the embedded screw that extends out of the prefabricated guardrail and the nut.

9. The railing structure according to claim 8, characterized in that: The prefabricated guardrail has a plurality of convex ridges arranged in sequence, and the cast-in-place concrete block has a plurality of structural grooves arranged in sequence and matched with the convex ridges.

10. The railing structure according to claim 9, characterized in that: The cross-sections of the plurality of ridges are connected in a sawtooth shape.

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