Multi-layer telescopic template

Abstract

The utility model relates to a multi-layer telescopic template which comprises an outer layer template body, a middle layer telescopic plate and an inner layer telescopic plate, the outer layer template body comprises an outer layer template upper opening, the middle layer telescopic plate comprises a middle layer telescopic plate upper opening, and the middle layer telescopic plate is arranged on the inner side of the outer layer template body in an embedded mode. The middle-layer telescopic plate is arranged on the outer-layer template body and can stretch and retract relative to the outer-layer template body in the opening direction of the upper opening of the outer-layer template, and the inner-layer telescopic plate is arranged on the inner side of the middle-layer telescopic plate in a nested mode and can stretch and retract relative to the middle-layer telescopic plate in the opening direction of the upper opening of the middle-layer telescopic plate. The middle-layer expansion plate and the inner-layer expansion plate are nested in the outer-layer template body, and the height can be flexibly adjusted according to the asphalt paving thickness, so that the construction efficiency is improved, and the slab staggering phenomenon and the template deformation problem caused by repeated installation are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of highway construction, especially a multilayer telescopic formwork. BACKGROUND

[0002] In the asphalt pavement paving process, in order to ensure the straightness of the linear and the compactness of the edge compaction, it is usually necessary to install a formwork. The structure of the asphalt pavement is divided into upper, middle and lower layers, and the prior art usually uses a single layer formwork for installation and reinforcement. When the lower layer paving and compaction are completed, the middle and upper layers need to be paved in turn, and the corresponding formwork needs to be installed for each layer of paving, especially when the upper layer formwork is installed, it needs to be assembled and connected with the lower layer formwork.

[0003] However, the existing single layer formwork installation method has some significant defects. First, multiple installations of the formwork are time-consuming and labor-intensive, increasing the construction cost and time. Second, multiple assembly of the formwork is prone to cause misalignment, affecting the surface flatness of the asphalt mixture after paving. The formwork is prone to deformation during multiple installations and paving and compaction, resulting in a non-straight linear of the final pavement, affecting the overall quality and appearance of the pavement. In addition, due to the inability of the single layer formwork to adjust the height flexibly, it cannot adapt to the needs of different paving thicknesses. SUMMARY

[0004] In view of the above defects of the prior art, the main purpose of the utility model is to develop a new multilayer telescopic formwork, which can flexibly adjust the height according to the asphalt paving thickness, thereby improving the construction efficiency, reducing the misalignment and formwork deformation problems caused by multiple installations, and ensuring the straightness of the linear of the asphalt pavement and the compactness of the edge compaction.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A multilayer telescopic formwork, comprising an outer formwork body, a middle layer telescopic plate and an inner layer telescopic plate, the outer formwork body comprises an outer formwork upper opening, the middle layer telescopic plate comprises a middle layer telescopic plate upper opening, the middle layer telescopic plate is nested and arranged inside the outer formwork body, and can perform telescopic movement relative to the outer formwork body along the opening direction of the outer formwork upper opening, the inner layer telescopic plate is nested and arranged inside the middle layer telescopic plate, and can perform telescopic movement relative to the middle layer telescopic plate along the opening direction of the middle layer telescopic plate upper opening; the middle layer telescopic plate and the outer layer telescopic plate, and the inner layer telescopic plate and the middle layer telescopic plate are connected by a sliding groove or a sliding rail respectively, the middle layer telescopic plate and the inner layer telescopic plate are adjusted in extension according to the asphalt paving thickness, the middle layer telescopic plate is stretched out when paving the middle surface layer, and the inner layer telescopic plate is stretched out when paving the upper surface layer.

[0007] Preferably, the outer template body is formed by the outer template front, the outer template back rib back, the outer template reverse side, the outer template bottom, and the outer template side, forming a cuboid frame with one side open.

[0008] Preferably, the middle telescopic plate is formed by the front of the middle telescopic plate, the middle telescopic plate baffle, the back of the middle telescopic plate, and the side of the middle telescopic plate, creating a cuboid frame with one open side.

[0009] Preferably, the inner telescopic plate is formed by the front of the inner telescopic plate, the baffle of the inner telescopic plate, the back of the inner telescopic plate back rib, and the side of the inner telescopic plate to form a rigid template.

[0010] Preferably, the outer template side and the middle telescopic plate side, as well as the middle telescopic plate side and the inner telescopic plate side, are limited by fixing bolt limiting holes.

[0011] Preferably, the cross-sectional dimensions of the middle telescopic plate baffle are the same as those of the outer template body.

[0012] Preferably, the inner telescopic baffle has the same cross-sectional dimensions as the outer template body.

[0013] Preferably, the inner telescopic plate, the middle telescopic plate, and the outer template are provided with template connection holes for connecting with other templates.

[0014] Preferably, the back side of the outer template back rib and the back side of the inner telescopic plate back rib include ribs.

[0015] Preferably, the ribs are evenly arranged.

[0016] In summary, the beneficial effects of this utility model are as follows: It has a simple structure and is easy to manufacture. Height adjustment is achieved through nested middle and inner telescopic plates, making the manufacturing process simple and efficient, and reducing production costs. The height is adjustable, making it widely applicable and adaptable to asphalt pavements of different paving thicknesses, meeting various construction needs. It is easy to stack and store; with the template closed, the overall volume is small, facilitating stacking and storage, saving storage space. Multiple templates can be installed in one go, significantly reducing installation time and labor intensity during construction, and improving construction efficiency. It reduces multiple assembly operations, avoiding misalignment caused by repeated installation, ensuring the flatness and quality of asphalt pavement paving. Furthermore, the template is not easily deformed during paving and compaction, further ensuring the straightness of the pavement line and the construction effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front structural diagram of the multi-layer telescopic template of this utility model in its fully extended state;

[0019] Figure 2 This is a front view of the multi-layer telescopic template with the middle telescopic plate extended in the extended state.

[0020] Figure 3 This is a front structural diagram of the multi-layer telescopic template of this utility model in its retracted state;

[0021] Figure 4 This is a structural diagram of the back side of the multi-layer telescopic template of this utility model when it is fully extended;

[0022] Figure 5 This is a schematic diagram of the back of the multi-layer telescopic template with the middle layer telescopic plate extended in the extended state.

[0023] Figure 6 This is a schematic diagram of the back structure of the multi-layer telescopic template of this utility model in its retracted state;

[0024] Figure 7 This is a schematic diagram of the upper part of the multi-layer telescopic template of this utility model;

[0025] Figure 8 This is a schematic diagram of the bottom structure of the multi-layer telescopic template of this utility model;

[0026] Figure 9 This is a structural schematic diagram of the side of the multi-layer telescopic template of this utility model.

[0027] Explanation of reference numerals in the attached diagram: 1-Front side of outer template; 2-Front side of middle expansion plate; 3-Front side of inner expansion plate; 4-Baffle of middle expansion plate; 5-Baffle of inner expansion plate; 6-Back side of outer template back rib; 7-Back side of inner expansion plate back rib; 8-Template connection hole; 9-Fixing bolt limit hole; 10-Back side of outer template; 11-Back side of middle expansion plate; 12-Bottom of outer template; 13-Upper opening of outer template; 14-Upper opening of middle expansion plate; 15-Side of outer template; 16-Side of middle expansion plate; 17-Side of inner expansion plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model belong to the present utility model.

[0029] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0030] Please see Figures 1-9 This embodiment discloses a multi-layer telescopic template, including an outer template body, a middle telescopic plate, and an inner telescopic plate. The outer template body includes an upper opening 13, and the middle telescopic plate includes an upper opening 14. The middle telescopic plate is nested inside the outer template body and can telescopically move relative to the outer template body along the opening direction of the upper opening 13. The inner telescopic plate is nested inside the middle telescopic plate and can telescopically move relative to the middle telescopic plate along the opening direction of the upper opening 14. The middle and outer telescopic plates, and the inner and middle telescopic plates, are connected by grooves or rails to achieve smooth telescopic movement of each template layer. The middle and inner telescopic plates can be adjusted according to the asphalt paving thickness. When paving the intermediate layer, the middle telescopic plate is stretched to achieve the required height; when paving the top layer, the inner telescopic plate is further stretched to ensure precise adjustment of the paving thickness of each layer, thereby meeting different construction needs.

[0031] In this embodiment, the outer template body is formed by the outer template front 1, the outer template back rib back 6, the outer template reverse side 10, the outer template bottom 12, and the outer template side 15, creating a rectangular frame with one open side. This ensures the integrity of the overall structure of the outer template body. The outer template back rib back 6 enhances the rigidity and stability of the template through evenly distributed ribs. The middle telescopic plate is formed by the middle telescopic plate front 2, the middle telescopic plate baffle 4, the middle telescopic plate reverse side 11, and the middle telescopic plate side 16, creating a rectangular frame with one open side, ensuring the integrity of the middle layer structure of the template. The inner telescopic plate is formed by the inner telescopic plate front 3, the inner telescopic plate baffle 5, the inner telescopic plate back rib back 7, and the inner telescopic plate side 17, creating a rigid template. The inner telescopic plate back rib back 7 further enhances the rigidity of the template through evenly distributed ribs.

[0032] Furthermore, the outer template side 15 and the middle telescopic plate side 16, as well as the middle telescopic plate side 16 and the inner telescopic plate side 17, are limited by fixing bolt limiting holes 9. These fixing bolt limiting holes 9 ensure the stability of each template layer during telescopic movement. The function of the fixing bolt limiting holes 9 is to limit the position of the middle and inner telescopic plates by fixing bolts, ensuring the stability of each template layer during use. The middle telescopic plate baffle 4 has the same cross-sectional dimensions as the outer template body. This design ensures that the middle telescopic plate remains aligned and stable with the outer template during tension, providing smooth support. The inner telescopic plate baffle 5 also has the same cross-sectional dimensions as the outer template body. This consistent design also ensures the alignment and stability of the inner telescopic plate during tension, making the overall structure more robust. Template connection holes 8 are provided on the inner expansion joint side 17, the middle expansion joint side 16, and the outer template side 15 for connecting with other templates. The template connection holes 8 penetrate the inner expansion joint side 17, the middle expansion joint side 16, and the outer template side 15. These template connection holes 8 are used to connect multiple templates together to form a continuous template structure, so as to adapt to a wider range of construction needs and enhance the overall stability of the template system.

[0033] The implementation principle of this patent is as follows: The telescopic template includes an outer template body, a middle telescopic plate, and an inner telescopic plate. The template body consists of the outer template front 1, the outer template back rib back 6, the outer template reverse side 10, the outer template bottom 12, and the outer template side 15, forming a rectangular frame with one open side. The opening is the opening of the outer template body frame. The template back rib back 6 is provided with back ribs to enhance the rigidity of the template. The middle telescopic plate is nested within the template body frame and consists of the middle telescopic plate front 2, the middle telescopic plate baffle 4, the middle telescopic plate reverse side 11, and the middle telescopic plate side 16, forming a rectangular frame with five closed sides and one open side. The inner telescopic plate is nested within the middle telescopic plate frame and consists of the inner telescopic plate front 3, the inner telescopic plate baffle 5, the inner telescopic plate back rib back 7, and the inner telescopic plate side 17. A back rib is provided on the back side to enhance the rigidity of the template. The middle and inner expansion joints are housed within the formwork body and configured to extend and retract relative to the formwork body along the frame opening direction. The expansion joints adjust their extension and retraction according to the asphalt paving thickness. During the paving of the intermediate layer, the middle expansion joint is extended to accommodate the paving requirements of the intermediate layer; during the paving of the upper layer, the inner expansion joint is further extended to accommodate the paving requirements of the upper layer. After extension, the expansion joints are positioned using fixing bolt limiting holes 9 between the outer formwork side 15 and the middle expansion joint side 16, and between the middle expansion joint side 16 and the inner expansion joint side 17, ensuring the stability of the expansion joint's position. Connection holes 8 are provided on the frame for connecting with other formwork panels. These connection holes allow multiple formwork panels to be connected together to form a continuous formwork structure, accommodating a wider range of construction needs and enhancing the overall stability of the formwork system.

[0034] In summary, this utility model provides a multi-layer telescopic template that allows for free adjustment of the template height, adapting to the needs of different asphalt paving thicknesses. It has significant advantages in improving construction efficiency, reducing costs, and ensuring road surface quality. It solves the problems of time-consuming and labor-intensive multiple installations and easy template deformation in existing technologies, and is an innovative product with broad application prospects.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-layer telescopic template, characterized in that, The system includes an outer template body, a middle expansion plate, and an inner expansion plate. The outer template body includes an upper opening (13), and the middle expansion plate includes an upper opening (14). The middle expansion plate is nested inside the outer template body and can extend and retract relative to the outer template body along the opening direction of the upper opening (13). The inner expansion plate is nested inside the middle expansion plate and can extend and retract relative to the middle expansion plate along the opening direction of the upper opening (14). The middle expansion plate and the outer expansion plate, and the inner expansion plate and the middle expansion plate are connected by a chute or a rail, respectively. The middle expansion plate and the inner expansion plate are adjusted according to the asphalt paving thickness. The middle expansion plate is stretched out when paving the intermediate layer, and the inner expansion plate is stretched out when paving the top layer.

2. The multi-layer telescopic template according to claim 1, characterized in that: The outer template body is formed by the front (1) of the outer template, the back (6) of the outer template back rib, the reverse (10) of the outer template, the bottom (12) of the outer template, and the side (15) of the outer template, forming a rectangular frame with one side open.

3. The multi-layer telescopic template according to claim 2, characterized in that: The middle telescopic plate is formed by the front (2) of the middle telescopic plate, the baffle (4) of the middle telescopic plate, the back (11) of the middle telescopic plate, and the side (16) of the middle telescopic plate, forming a rectangular frame with one side open.

4. The multi-layer telescopic template according to claim 3, characterized in that: The inner telescopic plate is formed by the front (3) of the inner telescopic plate, the baffle (5) of the inner telescopic plate, the back (7) of the inner telescopic plate back rib, and the side (17) of the inner telescopic plate to form a rigid template.

5. The multi-layer telescopic template according to claim 4, characterized in that: The outer template side (15) and the middle telescopic plate side (16), as well as the middle telescopic plate side (16) and the inner telescopic plate side (17), are limited by the fixing bolt limiting holes (9).

6. The multi-layer telescopic template according to claim 5, characterized in that: The cross-sectional dimensions of the middle layer telescopic plate baffle (4) are consistent with those of the outer layer template body.

7. The multi-layer telescopic template according to claim 6, characterized in that: The inner telescopic plate baffle (5) has the same cross-sectional dimensions as the outer template body.

8. The multi-layer telescopic template according to claim 7, characterized in that: Template connection holes (8) for connecting with other templates are provided on the side surface (17) of the inner telescopic plate, the side surface (16) of the middle telescopic plate, and the side surface (15) of the outer template.

9. The multi-layer telescopic template according to claim 8, characterized in that: The back side of the outer template back rib (6) and the back side of the inner telescopic plate back rib (7) include ribs.

10. The multi-layer telescopic template according to claim 9, characterized in that: The ribs are evenly distributed.

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