CN212224480U

CN212224480U - Concrete prefabricated staircase

Info

Publication number: CN212224480U
Application number: CN202020735659.2U
Authority: CN
Inventors: 钟富健
Original assignee: Shenzhen Honglijian Concrete Co ltd
Current assignee: Shenzhen Honglijian Concrete Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-12-25
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to the technical field of building materials, in particular to a concrete prefabricated staircase, which comprises a staircase body, wherein a plurality of steps are arranged on the staircase body, weight reducing through holes are arranged in the steps along the width direction, a water collecting tank is arranged at the junction of the inner side of the upper surface of each step and the vertical surface of the adjacent step, drain holes are arranged in the water collecting tank and are communicated with the weight reducing through holes and the water collecting tank; the upper surface of the ladder is provided with a mounting groove along the width direction, and a pedal protruding out of the mounting groove is arranged in the mounting groove; a lever structure is arranged in the weight-reducing through hole, one end of the lever structure is hinged with a dredging rod through a connecting rod, the dredging rod extends into the drain hole, and the other end of the lever structure is hinged with the connecting rod; the utility model discloses alleviate the weight of precast concrete stair, set up lever, link structure for the pedestrian arouses the mediation pole that stretches into the wash port when trampling the step surface to take out, dredges the wash port, avoids the wash port to block up.

Description

Concrete prefabricated staircase

Technical Field

The utility model relates to a building material technical field, concretely relates to precast concrete stair.

Background

The stairs are members for vertical traffic between floors in a building and are used for traffic connection between floors and when the height difference is large. At present, the reinforced concrete stairs are most commonly applied, the construction method of the reinforced concrete stairs comprises a field pouring method and a prefabricating and assembling method, the field pouring stair has better rigidity, but the template has high consumption and longer construction period, grooves are manually cut on the surface of the stairs to be roughened, the labor and the effort are wasted, and the phenomena of sewage, dust and noise are serious. The prefabricated staircase is prefabricated and formed in advance in a factory, is directly installed after arriving at a construction site, does not need to support a template and water for maintenance, saves water resources and maintenance time, and is beneficial to shortening the construction period.

In the prior art, concrete prefabricated stairs are mostly of solid structures, and are heavy in weight, so that transportation, transportation and installation are very inconvenient, and the combined concrete stairs can solve the transportation and installation problems, but are heavy in weight; meanwhile, the concrete step is easy to generate water on the step surface, so that people climbing stairs can easily slide to the concrete step.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defect among the prior art, providing a precast concrete stair, have the advantage of good drainage performance, and the wash port is difficult for blockking up, has alleviateed the weight of solid concrete stair simultaneously.

The utility model discloses a precast concrete stair, including the stair body, be equipped with a plurality of ladders on the stair body, be equipped with the heavy through-hole that subtracts along the width direction in the ladder, the junction of the inboard and adjacent ladder vertical face of ladder upper surface has seted up the water catch bowl, be equipped with the wash port in the water catch bowl, the wash port communicates subtract heavy through-hole and water catch bowl; the upper surface of the ladder is provided with a mounting groove along the width direction, a pedal protruding out of the mounting groove is arranged in the mounting groove, springs are arranged on the lower sides of two ends of the pedal, a connecting rod is arranged below the pedal, and the connecting rod penetrates through the ladder and extends into the weight-reducing through hole; a lever structure is arranged in the lightening through hole, one end of the lever structure is hinged with a dredging rod through a connecting rod, the dredging rod extends into the drain hole, and the other end of the lever structure is hinged with the connecting rod.

Further, the upper surface of the ladder inclines inwards and forms an included angle alpha with the horizontal plane, and the alpha is more than or equal to 1 degree and less than or equal to 5 degrees.

Further, an arc-shaped filter screen is arranged at an opening of the water collecting tank.

Furthermore, barbs are arranged on the dredging rod.

Further, the pedal is a T-shaped pedal, and the upper surface of the T-shaped pedal is provided with an anti-slip strip.

Furthermore, flow guide grooves are formed in two sides of the stair body, and two sides of the weight reducing through holes are communicated into the flow guide grooves.

The utility model has the advantages that: the utility model discloses a precast concrete stair, which reduces the weight of the precast concrete stair by arranging a weight reducing through hole inside a ladder, and a water collecting tank is arranged on the surface of the ladder to collect ponding inside the ladder, and the ponding flows into the weight reducing through hole through a drain hole and is discharged; the lever and the connecting rod structure are arranged in the weight-reducing through hole, so that a pedestrian can pull the dredging rod extending into the drain hole when stepping on the step surface, dredge the drain hole and avoid the blockage of the drain hole.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of a pedal of the present invention;

fig. 4 is a schematic structural view of the dredging rod of the present invention.

Description of reference numerals: the stair comprises a stair body 100, steps 200, weight-reducing through holes 201, a water collecting tank 202, water discharging holes 203, a lever structure 204, a connecting rod 205, a dredging rod 206, a pedal 207, a spring 208, a connecting rod 209, an arc-shaped filter screen 300, barbs 2061, an anti-slip strip 2071 and a diversion trench 101.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the precast concrete stair in this embodiment includes a stair body 100, where the stair body 100 is provided with a plurality of steps 200, the steps 200 are provided with weight-reducing through holes 201 along a width direction, a water collecting tank 202 is provided at a junction between an inner side of an upper surface of each step 200 and a vertical surface of an adjacent step 200, the water collecting tank 202 is provided with a water drainage hole 203, and the water drainage hole 203 is communicated with the weight-reducing through holes 201 and the water collecting tank 202; an installation groove is formed in the upper surface of the step 200 along the width direction, a pedal 207 protruding out of the installation groove is arranged in the installation groove, springs 208 are arranged on the lower sides of two ends of the pedal 207, a connecting rod 209 is arranged below the pedal 207, and the connecting rod 209 penetrates through the step 200 and extends into the weight-reducing through hole 201; a lever structure 204 is arranged in the weight-reducing through hole 201, one end of the lever structure 204 is hinged with a dredging rod 206 through a connecting rod 205, the dredging rod 206 extends into the water drain hole 203, and the other end of the lever structure 204 is hinged with a connecting rod 209.

In practical implementation, when a pedestrian steps on the ladder 200, the pedestrian can cause the pedal 207 to slightly move downwards, and pressure is transmitted through the connecting rod 209, so that the lever in the lever structure 204 in the weight-reduction through hole 201 rotates to drive the connecting rod 205 to pull the dredging rod 206; after the pedestrian leaves, the pedal 207 is reset by the elastic force of the spring 208, the lever structure 204 and the connecting rod 205 are driven to reset, the dredging rod 206 is inserted into the drain hole 203 again, and the dredging rod 206 is continuously drawn and inserted during the pedestrian continuously steps on, so that the blockage of the drain hole 203 is avoided.

In this embodiment, the upper surface of the step 200 is inclined inward and forms an included angle α with the horizontal plane, and α is greater than or equal to 1 ° and less than or equal to 5 °, and the step 200 with the inclined surface can guide the accumulated water to flow to the water collecting tank 202.

In this embodiment, the opening of the water collecting tank 202 is provided with the arc filter screen 300, so as to prevent impurities from entering the water collecting tank 202.

In this embodiment, the dredging rod 206 is provided with the barb 2061, and when the dredging rod 206 performs reciprocating inserting and withdrawing movement, the barb 2061 can help to take out the foreign matters in the drainage hole 203.

In this embodiment, the pedal 207 is a T-shaped pedal, and the upper surface of the T-shaped pedal is provided with a slip-proof strip 2071.

In this embodiment, flow guide grooves 101 are formed in two sides of the stair body 100, and two sides of the weight-reducing through hole 201 are communicated with the flow guide grooves 101.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a precast concrete stair, includes the stair body, be equipped with a plurality of ladders on the stair body, its characterized in that: a weight reducing through hole is formed in the ladder along the width direction, a water collecting tank is formed at the junction of the inner side of the upper surface of the ladder and the vertical surface of the adjacent ladder, a drain hole is formed in the water collecting tank, and the drain hole is communicated with the weight reducing through hole and the water collecting tank; the upper surface of the ladder is provided with a mounting groove along the width direction, a pedal protruding out of the mounting groove is arranged in the mounting groove, springs are arranged on the lower sides of two ends of the pedal, a connecting rod is arranged below the pedal, and the connecting rod penetrates through the ladder and extends into the weight-reducing through hole; a lever structure is arranged in the lightening through hole, one end of the lever structure is hinged with a dredging rod through a connecting rod, the dredging rod extends into the drain hole, and the other end of the lever structure is hinged with the connecting rod.

2. The precast concrete stair of claim 1, wherein: the upper surface of the ladder is inclined inwards and forms an included angle alpha with the horizontal plane, and the alpha is more than or equal to 1 degree and less than or equal to 5 degrees.

3. The precast concrete stair of claim 1, wherein: an arc-shaped filter screen is arranged at the opening of the water collecting tank.

4. The precast concrete stair of claim 1, wherein: and barbs are arranged on the dredging rod.

5. The precast concrete stair of claim 1, wherein: the pedal is a T-shaped pedal, and the upper surface of the T-shaped pedal is provided with an anti-slip strip.

6. The precast concrete stair of claim 5, wherein: flow guide grooves are formed in two sides of the stair body, and two sides of the weight reducing through holes are communicated into the flow guide grooves.