A sand box for support construction
By filling the sand box with a layer of cast-in-place concrete and designing a conical bottom concrete layer, the problem of height difference deformation caused by rainwater erosion of the sand box was solved, improving construction safety and the convenience of sand unloading.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 10 ENG GRP NO 1 ENG CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-07-03
AI Technical Summary
Existing sandboxes are prone to deformation due to elevation differences during support construction due to erosion by rainwater or maintenance water, which affects construction safety.
The top and bottom boxes of the sand box are filled with cast-in-place concrete layers, and sand discharge holes are set at intervals on the lower side wall of the bottom box. The sand discharge holes are located on the upper part of the cast-in-place concrete layer. The concrete layer inside the bottom box of the sand box is designed to be conical to facilitate sand discharge.
It reduces the deformation of sand box height caused by erosion from rainwater or maintenance water, and improves construction safety and the convenience of sand unloading.
Smart Images
Figure CN224444530U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a sand box for scaffold construction, which is a sand box used to adjust the height of the scaffold, and belongs to the field of building construction. Background Technology
[0002] Sand boxes are widely used in the construction industry. They consist of a top sand box and a bottom sand box, which are filled with manufactured sand. The bottom sand box is equipped with a sand discharge port and is often used for adjusting elevation, unloading, and temporary support.
[0003] When using scaffolding for construction, sand boxes are often used to adjust the elevation. However, existing sand boxes also have shortcomings in use: after the scaffolding is erected, because the sand boxes are generally deep and contain a large amount of sand, rainwater or maintenance water can easily erode the manufactured sand inside the boxes, causing deformation of the sand box's elevation difference, resulting in settlement changes in the overall scaffolding and affecting construction safety. Utility Model Content
[0004] To address the aforementioned shortcomings in the existing technology, this utility model provides a sand box for construction with a simple structure that can reduce the deformation of the sand box caused by the erosion of the manufactured sand inside the box by rainwater or maintenance water.
[0005] This utility model is achieved through the following technical solution: a sand box for support construction, comprising a top sand box and a bottom sand box, characterized in that: the top of the inner side of the top sand box and the bottom of the inner side of the bottom sand box are respectively filled with cast-in-place concrete layers, manufactured sand is filled between the cast-in-place concrete layers of the top sand box and the bottom sand box, and multiple sand discharge holes are evenly arranged at intervals on the lower side wall of the bottom sand box, all of which are located on the upper part of the cast-in-place concrete layer inside the bottom sand box, and sand discharge valves are provided at the sand discharge holes.
[0006] In this invention, by filling the top and bottom boxes of the sand box with cast-in-place concrete layers, the amount of sand in the sand box can be reduced. This can meet the requirements for adjusting the elevation during support construction and reduce the deformation of the sand box caused by the erosion of the manufactured sand inside the box by rainwater or maintenance water.
[0007] Furthermore, to ensure the required elevation adjustment during scaffold construction, the thickness of the manufactured sand between the two layers of cast-in-place concrete inside the sand box is 5-6 cm.
[0008] Furthermore, the cast-in-place concrete layer inside the top box of the sand box is cylindrical, while the upper part of the cast-in-place concrete layer inside the bottom box is conical. This design not only meets the requirements for adjusting the elevation during support construction, but also, because the upper part of the cast-in-place concrete layer inside the bottom box is conical, the manufactured sand inside the box can easily flow out during sand unloading, facilitating sand unloading and reducing the likelihood of uneven loading during sand unloading, thus improving safety.
[0009] The beneficial effects of this utility model are as follows: The structure is simple. By filling the top and bottom boxes of the sand box with cast-in-place concrete layers, the amount of sand in the sand box can be reduced. This satisfies the elevation adjustment requirements during support construction and reduces deformation caused by rainwater or curing water erosion of the manufactured sand, thus minimizing settlement changes to the overall support structure. Furthermore, by designing the upper part of the cast-in-place concrete layer in the bottom box of the sand box in a conical shape, the manufactured sand can easily flow out during unloading, facilitating unloading and reducing the risk of uneven loading, thereby improving safety. This utility model can be modified from existing sand boxes at a low cost and can be widely applied in support construction, demonstrating high practicality. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is another structural schematic diagram of the present invention;
[0012] In the diagram, 1 is the top box of the sand box, 2 is the bottom box of the sand box, 3 is the manufactured sand, 4 is the cast-in-place concrete layer inside the top box of the sand box, 5 is the cast-in-place concrete layer inside the bottom box of the sand box, and 6 is the sand unloading valve. Detailed Implementation
[0013] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:
[0014] As attached Figure 1 As shown, a sand box for scaffold construction includes a top sand box 1 and a bottom sand box 2, both made of steel and using existing sand box technology. The top inner side of the top sand box 1 is filled with a layer of cast-in-place concrete 4, and the bottom inner side of the bottom sand box 2 is filled with a layer of cast-in-place concrete 5. Manufactured sand 3, a prior art material, is filled between the cast-in-place concrete layers 4 and 5 in the top and bottom sand boxes. Multiple sand discharge holes are evenly spaced on the lower side wall of the bottom sand box 2, and sand discharge valves 6 are installed at each hole. The sand discharge holes are all located above the cast-in-place concrete layer 5 in the bottom sand box. To ensure uniform sand discharge, the sand discharge holes are generally arranged symmetrically.
[0015] To ensure the required elevation adjustment during scaffold construction, it is preferable that the thickness of the manufactured sand 3 between the cast-in-place concrete layer 4 in the top sand box and the cast-in-place concrete layer 5 in the bottom sand box be 5-6 cm.
[0016] Appendix Figure 1 In the sand box shown, the cast-in-place concrete layer 4 in the top box and the cast-in-place concrete layer 5 in the bottom box both adopt a cylindrical structure. This cylindrical cast-in-place concrete layer is easy to manufacture. According to the design height of the concrete layer, it can be smoothed after the concrete is poured.
[0017] As attached Figure 2 The diagram shows another structural schematic of this utility model. The cast-in-place concrete layer 4 inside the top box of the sand box is cylindrical, while the upper part of the cast-in-place concrete layer 5 inside the bottom box of the sand box is conical. This structural design not only meets the requirements for adjusting the elevation during support construction, but also, because the upper part of the cast-in-place concrete layer 5 inside the bottom box of the sand box is conical, the manufactured sand inside the box can easily flow out during sand unloading, facilitating sand unloading and reducing the likelihood of uneven loading during sand unloading. This helps improve the stability of the support during sand unloading and enhances construction safety.
[0018] When using this utility model for construction, follow these steps:
[0019] 1) After the bracket is installed, measure the top elevation of the bracket, calculate the height difference of the bracket, and determine that the remaining height of the bracket is within the controllable range of the sand box;
[0020] 2) Fill the top and bottom boxes of the sand box with cast-in-place concrete, and fill the gaps between the cast-in-place concrete layers with manufactured sand to control the overall height of the support.
[0021] 3) Install the sand box. Install the bottom and top sand boxes in sequence and remove excess sand using the sand discharge holes to adjust (control) the overall elevation.
[0022] The other parts in this embodiment are all existing technologies and will not be described in detail here.
Claims
1. A sand box for use in bracing construction, comprising a sand box top box and a sand box bottom box, characterized by: The top of the sand box top and the bottom of the sand box bottom are filled with cast-in-place concrete layers. The space between the cast-in-place concrete layers of the sand box top and bottom is filled with manufactured sand. Multiple sand discharge holes are evenly spaced on the lower side wall of the sand box bottom. The sand discharge holes are all located on the upper part of the cast-in-place concrete layer inside the sand box bottom. A sand discharge valve is installed at each sand discharge hole.
2. The sand box for scaffolding construction according to claim 1, characterized in that: The thickness of the manufactured sand between the two layers of cast-in-place concrete in the sand box is 5-6cm.
3. The sand box for scaffolding construction according to claim 1, characterized in that: The cast-in-place concrete layer inside the top chamber of the sand box is cylindrical, while the upper part of the cast-in-place concrete layer inside the bottom chamber of the sand box is conical.