CN216405968U - Precast concrete stair convenient to hoist and mount - Google Patents

Abstract

The utility model discloses a precast concrete stair convenient to hoist, which comprises: prefabricated stair body and hoist and mount piece. Wherein: the hoisting piece comprises: fixed column, backup pad, pre-buried board and hoist and mount ear. Wherein: the fixed column is vertically arranged, the supporting plate and the embedded plate are horizontally sleeved on the fixed column, and the supporting plate and the embedded plate are fixedly connected with the fixed column. The embedded plate is located below the supporting plate, a plurality of through holes are formed in a panel of the embedded plate, the embedded plate is embedded in the step of the prefabricated staircase body, the fixing column is perpendicular to the step, and the supporting plate is attached to and covered on the upper surface of the step. The lifting lug is fixed on the top surface of the fixing column, and the width of the lifting lug is smaller than that of the fixing column. The prefabricated concrete stair disclosed by the utility model realizes the installation and hoisting of the stair through the integrally designed hoisting piece, and the hoisting piece does not need to be removed after the installation is finished, so that the installation procedure of the prefabricated stair is simplified.

Description

Precast concrete stair convenient to hoist and mount

Technical Field

The utility model relates to the technical field of prefabricated stairs, in particular to a prefabricated concrete stair convenient to hoist.

Background

The stairway is one of the very important components of the building, and the construction mode of the stairway is mostly cast in situ by the tradition, but with the development of the prefabricated house, more and more projects choose to adopt the prefabricated stairway to replace the tradition cast in situ stairway. Compared with a cast-in-place stair, the prefabricated stair can obviously improve the construction efficiency, the standardized preparation process can better ensure the strength of the stair, the quality of engineering is improved, and the problem that the quality cannot reach the standard due to uneven quality of cast-in-place stair workers is solved.

However, the mode of perforating on stepping is commonly adopted to present prefabricated staircase, as the mounting hole of follow-up railing, and this kind of mode causes the weakening of prefabricated staircase structural strength easily, especially receives under the condition of great external force, and these positions produce the crackle first, and then lead to the crack to expand, cause the stair fracture when serious. In addition, the steel hoisting piece embedded in the existing prefabricated staircase needs to be cut and removed after installation, so that the installation procedure of the staircase is increased, and the staircase is easy to be damaged in China during the cutting process.

Disclosure of Invention

Aiming at the problems, the utility model provides the prefabricated concrete stair convenient to hoist, and the prefabricated stair adopts the integrally designed hoisting piece to realize the installation and hoisting of the stair, and does not need to remove the hoisting piece after the installation is finished, so that the installation procedure of the prefabricated stair is simplified. In order to achieve the above object, the technical solution of the present invention is as follows.

A precast concrete stair convenient to hoist includes: prefabricated staircase body and part pre-buried hoist and mount piece in this prefabricated staircase body. Wherein: the hoisting piece comprises: fixed column, backup pad, pre-buried board and hoist and mount ear. Wherein: the fixed column is vertically arranged, the supporting plate and the embedded plate are horizontally sleeved on the fixed column, and the supporting plate and the embedded plate are fixedly connected with the fixed column. The embedded plate is located below the supporting plate, a plurality of through holes are formed in a panel of the embedded plate, the embedded plate is embedded in the step of the prefabricated staircase body, the fixing column is perpendicular to the step, and the supporting plate is attached to and covered on the upper surface of the step. The lifting lug is fixed on the top surface of the fixing column, and the width of the lifting lug is smaller than that of the fixing column.

Furthermore, a connecting hole is formed in the side wall of the fixing column and is located above the supporting plate, so that the handrail is fixed on the fixing column.

Further, the lateral wall of fixed column has the external screw thread to in the mode through threaded connection with the railing screw on the lateral wall of fixed column.

Furthermore, the embedded plates at least comprise two embedded plates, one of the embedded plates is horizontally fixed on the bottom surface of the fixed column, the other embedded plates are positioned between the supporting plate and the embedded plates on the bottom surfaces of the fixed columns, and the embedded plates are parallel to the supporting plate.

Furthermore, the hoisting piece is a steel part, and the connection relation between the parts is welding, so that the good connection performance of the whole hoisting piece is ensured, and the rigidity required by hoisting the stairs is met.

Further, a set of is buried underground respectively in the both sides of marking time of prefabricated staircase body hoist and mount piece, when convenient hoist and mount to stair, the later stage installation railing of also being convenient for.

Furthermore, fixing holes are formed in the two end steps of the prefabricated staircase body, so that the hoisted staircase can be fixed at a preset position conveniently.

Further, the supporting plate and the embedded plate comprise any one of a square plate, a circular plate, an elliptical plate and the like.

Furthermore, the lifting lug is provided with a lifting hole so as to be conveniently connected with lifting equipment for lifting the stair to a preset position.

Compared with the prior art, the utility model has the following beneficial effects: the prefabricated concrete stair disclosed by the utility model realizes the installation and hoisting of the stair through the integrally designed hoisting piece, and the hoisting piece does not need to be removed after the installation is finished, so that the installation procedure of the prefabricated stair is simplified. This is because: the lower parts of the embedded plate and the fixed column are embedded in the prefabricated staircase body and then combined into a whole, when the vertical acting force applied to the embedded plate is applied to hoisting the staircase, the embedded plate is horizontally arranged in the prefabricated staircase body, so that the embedded plate can have a good lifting effect on the staircase, the hoisting part is prevented from being separated from the prefabricated staircase body, and the hoisting safety is ensured. Simultaneously, through the both sides of marking time with hoist and mount piece setting at the prefabricated staircase body, after hoist and mount are accomplished, the fixed column that exposes outside need not to get rid of as the installation component of railing, overlaps the railing on the fixed column to make the hoist and mount ear hide in the railing, effectively simplified the installation procedure of prefabricated staircase, changed later stage cutting hoist and mount some problems that the piece brought.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

Fig. 1 is a front view of a precast concrete stair convenient to hoist in the embodiment.

Figure 2 is the front view of the sling of the example.

Fig. 3 is a top view of an embedment plate in the embodiment of the utility model.

Figure 4 is a front view of a sling according to another embodiment.

The labels in the figures represent: 1-prefabricating a stair body, 2-hoisting parts, 3-fixing columns, 4-supporting plates, 5-embedded plates, 6-hoisting lugs, 7-through holes, 8-steps, 9-connecting holes, 10-external threads, 11-fixing holes and 12-hoisting holes.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In the description of the present invention, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "horizontal," "top," "bottom," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, the referenced devices or elements being oriented in a particular orientation for purposes of construction and operation, and thus are not to be construed as limiting the claimed invention. The technical scheme of the utility model is further explained by combining the drawings and the embodiment of the specification.

Referring to fig. 1 to 3, there is illustrated a precast concrete stairway convenient to hoist, including: prefabricated stair body 1 and part pre-buried hoist and mount piece 2 in this prefabricated stair body 1. Wherein:

the prefabricated staircase body 1 is prefabricated through concrete, and the step 8 at two ends of the prefabricated staircase body is provided with fixing holes 11 so as to fix the hoisted staircase at a preset position. Prefabricated staircase body 1's the both sides of marking time 8 respectively bury underground and have a set ofly hoist and mount piece 2, when convenient hoist and mount to stair, the later stage installation railing of also being convenient for.

In particular, with reference to figures 2 and 3, said sling 2 comprises: fixed column 3, backup pad 4, pre-buried board 5 and hoist and mount ear 6. The hoisting piece 2 is a steel part, and the connection relation between the parts is welding, so that the good connection performance of the hoisting piece 2 is ensured, and the rigidity required by hoisting the stairs is met. Wherein: the fixing columns 3 are vertically embedded in the steps 8 of the prefabricated staircase body 1, the fixing columns 3 are perpendicular to the steps 8, and the supporting plates 4 are attached to the upper surfaces of the steps 8. The supporting plate 4 and the embedded plate 5 are both circular steel plates which are horizontally sleeved on the fixed column 3, and the supporting plate 4 and the embedded plate 5 are fixedly connected with the fixed column 3 in a welding mode. The embedded plate 5 is positioned below the supporting plate 4, and a plurality of through holes 7 are formed in the panel of the embedded plate 5. The main effect of through-hole 7 is at the in-process of pouring prefabricated stair body 1 in the mould, makes the concrete thick liquid fully get into between backup pad 4 and the pre-buried board 5 when vibrating, prevents to appear the cavity, influences the combination between pre-buried board 5 and the prefabricated stair body 1. The lower parts of the embedded plate 5 and the fixed column 3 are embedded in the prefabricated staircase body 1 and then combined into a whole, when the vertical acting force applied to the embedded plate 5 is caused by hoisting the staircase, the embedded plate 5 is horizontally arranged in the prefabricated staircase body 1, so that the embedded plate 5 can well lift the staircase, the hoisting part 2 is prevented from being separated from the prefabricated staircase body 1, and the hoisting safety is ensured.

The lifting lugs 6 are fixed on the top surfaces of the fixing columns 3, and the width of each lifting lug 6 is smaller than that of each fixing column 3, so that the lifting lugs are hidden in the railings. The lifting lug 6 is provided with a lifting hole 12 so as to be connected with lifting equipment and lift the stair to a preset position. Through setting up hoist and mount piece 2 in prefabricated staircase body 1 both sides of marking time, after the hoist and mount are accomplished, the fixed column 3 that exposes outside need not to get rid of as the installation component of railing, overlaps the railing on fixed column 3 to make hoist and mount ear 6 hide in the railing, effectively simplified prefabricated staircase's installation procedure, changed later stage cutting hoist and mount some problems that piece 2 brought.

In another embodiment, the pre-buried plates 5 include at least two, one of the pre-buried plates 5 is horizontally fixed on the bottom surface of the fixed column 3, the other pre-buried plates 5 are located between the supporting plate 4 and the pre-buried plate 5 on the bottom surface of the fixed column 3, and the pre-buried plates 5 and the supporting plate 4 are parallel to each other. Through suitably increasing the quantity of pre-buried board 5 according to the thickness of prefabricated staircase body 1, can form better off-line effect to prefabricated staircase body 1 in the hoist and mount in-process.

With reference to fig. 2, in another embodiment, a connecting hole 9 is formed in a side wall of the fixing post 3, and the connecting hole 9 is located above the supporting plate 4, when a handrail (steel pipe) is installed, the lower port of the handrail is sleeved on the upper end of the fixing post 3, and the lower port of the handrail is supported on the supporting plate 4, and then the handrail is fixed on the fixing post 3 by passing through the side wall of the handrail and the connecting hole 9 through a bolt assembly.

Referring to fig. 4, in another preferred embodiment, the side wall of the fixing post 3 has an external thread 10, so as to screw a rail (steel pipe with an internal thread matching the external thread 10 on the inner wall of the lower end) on the side wall of the fixing post 3 by means of a threaded connection.

Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims (9)

1. The utility model provides a precast concrete stair convenient to hoist and mount which characterized in that includes: prefabricated staircase body and the pre-buried hoist and mount piece in this prefabricated staircase body of part, wherein:

the hoisting piece comprises: the lifting device comprises a fixed column, a supporting plate, an embedded plate and lifting lugs, wherein the fixed column is vertically arranged, the supporting plate and the embedded plate are horizontally sleeved on the fixed column, and the supporting plate and the embedded plate are fixedly connected with the fixed column; the embedded plate is positioned below the supporting plate, a panel of the embedded plate is provided with a plurality of through holes, the embedded plate is embedded in the step of the prefabricated staircase body, the fixing column is vertical to the step, and the supporting plate is attached to the upper surface of the step; the lifting lug is fixed on the top surface of the fixing column, and the width of the lifting lug is smaller than that of the fixing column.

2. The precast concrete stair convenient to hoist of claim 1, characterized in that the side wall of the fixing column is provided with a connecting hole, and the connecting hole is positioned above the supporting plate.

3. The precast concrete stair convenient to hoist of claim 1, characterized in that the side wall of the fixing column is provided with an external thread.

4. The precast concrete stair convenient to hoist of claim 1, wherein the embedded plates comprise at least two, one of the embedded plates is horizontally fixed on the bottom surface of the fixed column, the other embedded plates are positioned between the supporting plate and the embedded plates on the bottom surface of the fixed column, and the embedded plates and the supporting plate are parallel to each other.

5. The precast concrete stair convenient to hoist of claim 1, wherein the hoisting piece is a steel component, and the connection relation of the components is welding.

6. The precast concrete stair convenient to hoist of claim 1, characterized in that a set of the hoisting pieces are buried at both sides of the step of the precast concrete stair body.

7. The precast concrete stair convenient to hoist of claim 1, characterized in that the two end steps of the precast concrete stair body are provided with fixing holes.

8. The precast concrete stair convenient to hoist of any one of claims 1 to 7, wherein the supporting plate and the embedded plate comprise any one of a square plate, a circular plate and an elliptical plate.

9. The precast concrete stair convenient to hoist of any one of claims 1 to 7, wherein the hoisting lug is provided with a hoisting hole.

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