A precast mold for water-stabilized base course roadbed

Abstract

This utility model proposes a precast mold for water-stabilized base course subgrade, belonging to the field of road construction technology. It solves the problem in existing technologies where repeated pressing of the mold leads to inconsistent stress at the edges and corners, easily causing deformation of the mold edges after prolonged use. It includes corner connectors and templates. Four templates are provided, with their ends connected sequentially by corner connectors. The bottom of each template has a semi-circular embankment structure, and the inner and upper sides of the template form an inverted L-shaped structure. The outer side of the template has a semi-circular groove, the upper and lower ends of which are tangent to the upper side and the semi-circular embankment structure, respectively. The corner connectors have corresponding fitting grooves on the template cross-section, and a first pin is provided above the fitting grooves. The templates are connected to the fitting grooves. It is mainly used for the molding of water-stabilized base courses.

Description

Technical Field

[0001] This utility model belongs to the field of road construction technology, and in particular relates to a precast mold for water-stabilized base course. Background Technology

[0002] Water-stabilized base course, also known as cement-stabilized base course, can be divided into water-stabilized crushed stone base course and water-stabilized sand and gravel base course. It refers to the pavement base material used for highways or airport runways, which is made by mixing cement and crushed stone or according to a certain gradation using a mixer. In the manufacturing process of water-stabilized subgrade, the raw materials need to be filled into a precast mold for shaping. The road roller repeatedly presses the material to meet the qualification requirements before removing it from the mold. The precast mold in the existing technology mainly includes a rectangular frame mold body, which is composed of four side plates connected end to end. During the molding process, the raw materials are poured into the mold body so that the water-stabilized subgrade can be shaped into a suitable shape and size within the mold body.

[0003] However, in existing technologies, the precast mold does not retract during the compaction process of the road roller. It needs to bear the pressure of the road roller along with the cement and gravel of the water-stabilized base course without deformation. However, existing precast molds mostly use rectangular frames. The existing Chinese utility model patent with publication number CN221271508U discloses a precast mold for water-stabilized roadbed, including four corner connectors and multiple splicing plates. The four corner connectors are arranged in a rectangular arrangement with their ends facing each other. Each corner connector has a splicing structure at both ends. Each splicing plate has a splicing structure at both ends. Adjacent splicing plates are spliced ​​together through the splicing structure. At least one splicing plate is spliced ​​together with the adjacent corner connector through the splicing structure. In this invention, adjacent splicing plates are joined together via a splicing structure, and at least one splicing plate is joined to an adjacent corner connector via the same structure. This allows for adjustments to the number of splicing plates within the spacing between adjacent corner connectors, enabling changes in the width and length of the prefabrication mold for water-stabilized roadbeds, facilitating the prefabrication of roadbeds of different sizes. However, due to repeated pressing of the mold, the stress at the edges and corners of the mold is inconsistent. Prolonged use can easily lead to deformation of the mold edges. If mold deformation occurs, the thickness and edge dimensions of the pressed water-stabilized base layer may not adequately meet the prefabrication requirements of the water-stabilized roadbed. Utility Model Content

[0004] In view of this, the present invention aims to propose a precast mold for water-stabilized base course subgrade to solve the problem in the prior art where the mold is repeatedly pressed, resulting in inconsistent stress at the edges and corners of the mold, which can easily cause deformation of the mold edges after long-term use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A precast mold for water-stabilized base course roadbed includes corner connectors and templates. The number of templates is at least four. When the number of templates is four, the bottom of the template is a semi-circular embankment structure. The inner and upper sides of the template form an inverted L-shaped structure. The outer side of the template is provided with a semi-circular groove. The upper and lower ends of the semi-circular groove are tangent to the upper side and the semi-circular embankment structure, respectively.

[0006] Furthermore, the corner connector has a corresponding fitting groove for the template cross section, and a first pin is provided above the fitting groove, and the template is connected to the fitting groove.

[0007] Furthermore, when the number of templates is greater than four, two adjacent templates are connected by a fitting structure.

[0008] Furthermore, the template is integrally formed.

[0009] Furthermore, the semi-circular groove is provided with a support component to improve the lateral compressive strength of the template.

[0010] Furthermore, the supporting component includes a supporting plate, a hemispherical surface, and a reinforcing plate. The hemispherical surface and the reinforcing plate are respectively installed at both ends of the supporting plate, and the hemispherical surface contacts the semi-circular groove.

[0011] Furthermore, a second pin is provided at the bottom of the reinforcing plate.

[0012] Furthermore, the bottom of the reinforcing plate is designed as a triangular prism.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The template of this utility model adopts a specific shape structure. By using the bottom semi-circular embankment and the side semi-circular groove, when the template is subjected to lateral pressure, the side semi-circular groove can be used to evenly distribute the pressure. When the water-stabilized base layer is laid and pressed, it can effectively convert the lateral pressure into downward pressure, reduce the lateral bearing capacity of the template, and make the template less prone to deformation.

[0014] 2. This utility model can further enhance lateral compressive strength by providing a supporting component at the semi-circular groove. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1This is a structural schematic diagram of a precast mold for a water-stabilized base course roadbed according to the present invention; Figure 2 This is a cross-sectional schematic diagram of the template described in this utility model; Figure 3 This is a schematic diagram of the structure of the support component described in this utility model; Figure 4 This is a schematic diagram of the interlocking structure.

[0016] In the picture: 1-Corner connector, 2-Template, 3-Semi-circular embankment structure, 4-Inverted L-shaped structure, 401-Inner side, 402-Upper side, 5-Semi-circular groove, 6-Matching groove, 7-First pin, 8-Matching structure, 9-Support plate, 10-Hemisphere, 11-Reinforcing plate, 12-Second pin. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0018] Detailed Implementation Method 1: See Figure 1-4 This embodiment describes a precast mold for a water-stabilized base course roadbed, characterized in that it includes corner connectors 1 and templates 2. Four templates 2 are provided, and the first and last ends of the four templates 2 are connected sequentially by corner connectors 1. The bottom of the template 2 is a semi-circular embankment structure 3. The inner side 401 and the upper side 402 of the template 2 form an inverted L-shaped structure 4. The outer side of the template 2 is provided with a semi-circular groove 5, and the upper and lower ends of the semi-circular groove 5 are tangent to the upper side 402 and the semi-circular embankment structure 3, respectively.

[0019] By utilizing the bottom semi-circular embankment structure 3 and the semi-circular groove 5, when the mold is subjected to lateral pressure, the pressure can be evenly distributed by the side semi-circular groove 5. When the water-stabilized base layer is laid and pressed, it can effectively convert the lateral pressure into downward pressure, reduce the lateral bearing capacity of the template 2, and make the template 2 less prone to deformation.

[0020] In this embodiment, the corner connector 1 has a corresponding fitting groove 6 in the cross section of the template 2. A first pin 7 is provided above the fitting groove 6. The template 2 is connected to the fitting groove 6. After the template 2 is connected to the corner connector 1 through the fitting groove 6, the first pin 7 is provided above the fitting groove 6 and extends to the bottom of the fitting groove 6. Figure 3As shown, after inserting the template 2 into the fitting groove 6, it can be fixed in the vertical direction, and the first pin 7 can be used to fix it in the horizontal direction to prevent the template 2 from falling out.

[0021] In this embodiment, the template 2 is integrally formed. The integrally formed structure has a stronger load-bearing capacity than the spliced ​​structure, which can further improve the strength of the mold during operation.

[0022] Detailed Implementation Method 2: See Figure 1-4 This embodiment describes a method where, under the premise of embodiment 1, when the number of templates 2 is greater than four, adjacent templates 2 are connected by a fitting structure 8. If a larger and longer water-stabilized layer needs to be laid, multiple templates 2 need to be connected to achieve lengthening, and thus... Figure 4 As shown, the adjacent templates 2 on each side are connected by the interlocking structure 8, and then the template 2 at one end is connected to the template 2 at the adjacent end by the corner connector 1. The interlocking structure 8 adopts a toothed structure. Compared with the simple flat joint, the toothed joint can increase the bonding area, improve the pull-out resistance, and effectively resist shear force, further enhancing the mechanical properties of the joint.

[0023] Detailed implementation method 3: See Figure 1-4 In this embodiment, a support component for improving the lateral compressive strength of the template 2 is provided at the semi-circular groove 5. The support component includes a support plate 9, a hemispherical surface 10, and a reinforcing plate 11. The two ends of the support plate 9 are respectively provided with a hemispherical surface 10 and a reinforcing plate 11, and the hemispherical surface 10 engages with the semi-circular groove 5.

[0024] To further enhance lateral compressive strength, a support plate 9 is provided at the semi-circular groove 5. The support plate 9 includes a hemispherical surface 10 that contacts the semi-circular groove 5 and a reinforcing plate 11. The hemispherical surface 10 contacts the semi-circular groove 5 and can move along the semi-circular groove 5. During installation, the support plate 9 can be placed at the semi-circular groove 5 at any time and then fixed and supported by the reinforcing plate 11.

[0025] Detailed implementation method 4: See Figure 1-4 In this embodiment, based on embodiment 3, to further enhance the bearing capacity of the support plate 9 against lateral or downward pressure, a second pin 12 is provided at the bottom of the reinforcing plate 11, or the bottom of the reinforcing plate 11 is set as a triangular prism. When pressing the water-stabilized base layer, the lateral pressure is transmitted to the hemispherical surface 10 through the semi-circular groove 5. After the hemispherical surface 10 is subjected to force, the pressure is transmitted towards the center. The reinforcing plate 11 is located in the center direction of the hemispherical surface 10. Therefore, the reinforcing plate 11 can transmit the pressure downward and the force to the ground, which can further enhance the mold's compressive strength.

[0026] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A precast mold for water-stabilized base course roadbed, characterized in that: Includes corner connector (1) and template (2). The number of templates (2) is at least four. When the number of templates (2) is four, the first and last ends of the four templates (2) are connected in sequence through corner connector (1). The bottom of the template (2) is a semi-circular embankment structure (3). The inner side (401) and the upper side (402) of the template (2) form an inverted L-shaped structure (4). The outer side of the template (2) is provided with a semi-circular groove (5). The upper and lower ends of the semi-circular groove (5) are tangent to the upper side (402) and the semi-circular embankment structure (3) respectively.

2. The precast mold for water-stabilized base course as described in claim 1, characterized in that: The corner connector (1) has a corresponding fitting groove (6) in the cross section of the template (2), and a first pin (7) is provided above the fitting groove (6). The template (2) and the fitting groove (6) are connected in a cooperative manner.

3. The precast mold for water-stabilized base course as described in claim 1, characterized in that: When the number of templates (2) is greater than four, two adjacent templates (2) are connected by a fitting structure (8).

4. A precast mold for a water-stabilized base course according to claim 1 or 3, characterized in that: The template (2) is integrally formed.

5. The precast mold for water-stabilized base course according to claim 1, characterized in that: The semi-circular groove (5) is provided with a support component to improve the lateral compressive strength of the template (2).

6. The precast mold for water-stabilized base course according to claim 5, characterized in that: The supporting component includes a support plate (9), a hemispherical surface (10) and a reinforcing plate (11). The two ends of the support plate (9) are respectively provided with a hemispherical surface (10) and a reinforcing plate (11). The hemispherical surface (10) is in contact with the semi-circular groove (5).

7. The precast mold for water-stabilized base course according to claim 6, characterized in that: The bottom of the reinforcing plate (11) is provided with a second pin (12).

8. The precast mold for water-stabilized base course according to claim 6, characterized in that: The bottom of the reinforcing plate (11) is set as a triangular prism.

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