A protective device for water collection wellheads used in road structural layer paving

Abstract

This utility model discloses a protective device for the sump head of a road structural layer during paving, belonging to the field of road construction. It includes a protective frame and a protective plate fixed to the top of the frame. The inner side of the protective frame has a cavity structure adapted to the size of the sump head's inner cavity, and multiple limiting anchor rods are fixed circumferentially along the inner side of the protective frame, contacting the inner wall of the sump head. This utility model can prevent structural layer mixture from falling into the sump head, prevent damage to the sump head under heavy pressure, ensure that the compaction and boundary of the asphalt sublayer meet the requirements for installing the grates when the grates are installed in advance, simplify the operation process, improve asphalt paving efficiency, and improve asphalt paving quality.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, and in particular to a water collection wellhead protection device for road surface structural layer paving. Background Technology

[0002] In common road drainage designs for municipal road engineering, a set of rainwater collection wells is installed every 30m-40m along both sides of the road surface at a low elevation. During the construction of the base and surface layers of newly built and partially reconstructed roads, the collection well openings need to be shielded to ensure smooth passage for pavers. Current protection technology uses steel plates thicker than 8mm. However, these steel plates are prone to displacement during paving operations due to the paver's dragging, causing some of the structural layer mixture to fall into the collection wells. Furthermore, in the reconstruction of some busy road sections, precast manhole rings need to be installed in advance, not before the surface layer is laid, to ensure pedestrian and vehicle safety when opening to traffic early. The installation height of the precast manhole rings must be lower than the design height. If steel plates are used to cover the collection well openings during the construction of the lower layer before the surface layer is laid, the density and boundary of the asphalt concrete mixture above the manhole rings cannot meet the requirements of the surface layer, leading to significant construction difficulties and potential quality issues at the collection well locations. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a protective device for the sump wellhead of a road structural layer. This device can prevent structural layer mixture from falling into the sump well, prevent the sump well body from being damaged under heavy pressure, ensure that the compaction and boundary of the asphalt sublayer meet the requirements for installing the grates when the well ring is installed in advance, simplify the operation process, improve asphalt paving efficiency, and improve asphalt paving quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A protective device for a water collection wellhead used in road structure layer paving includes a protective frame and a protective plate fixed to the top of the protective frame. The inner side of the protective frame has a cavity structure adapted to the size of the water collection well cavity, and multiple limiting anchor rods that contact the inner wall of the water collection well are fixed circumferentially on the inner side of the protective frame. When working on the lower structural layer of asphalt concrete, the protective frame and protective plate together provide a template structure slightly lower than the height of the compacted asphalt layer. After asphalt paving, a small amount of residual asphalt on the surface of the device can be cleaned before the compaction process can begin. This ensures that the compaction degree and clear boundary of the asphalt pavement outside the sump meet the specifications and design requirements. When working on the base structural layer, the protective frame and protective plate together provide a template structure 3cm-5cm lower than the surrounding structure of the sump. After the base layer is paved and compacted, the structural layer above the protective structure is cleaned before removing the protective device. The operation process is simplified, reducing labor intensity and improving work efficiency. At the same time, the limiting anchor rods on the inner side of the protective frame can effectively ensure that the device does not misalign when subjected to the drag force of the paver, avoiding exposure of the opening, effectively preventing the structural layer mixture from falling into the sump, and ensuring the safety of the sump opening.

[0006] The protective frame is an adjustable rectangular frame, and the protective plate is a plurality of rectangular plates adapted to the rainwater grates of different collection wells. Each rectangular plate is detachably connected to a rectangular frame of a corresponding size via anchoring components. By configuring the protective frame and protective plates to adapt to the rainwater grates of different collection wells, it can be used with different well opening sizes, increasing versatility and improving turnover rate.

[0007] The rectangular frame includes a first right-angle frame, a second right-angle frame, a third right-angle frame, and a fourth right-angle frame. The wide side of the second right-angle frame and the long side of the third right-angle frame are respectively inserted into the wide side and long side of the first right-angle frame. The long side and wide side of the fourth right-angle frame are respectively inserted into the long side of the second right-angle frame and the wide side of the third right-angle frame. The first right-angle frame, the second right-angle frame, and the third right-angle frame are provided with locking devices for locking the internal insertion parts.

[0008] The locking component is a fixing bolt. The wide side sections of the second and fourth right-angle brackets are provided with multiple width-adjusting threaded holes along the width direction of the rectangular frame. The long side sections of the third and fourth right-angle brackets are provided with multiple length-adjusting threaded holes along the length direction of the rectangular frame. Through holes for the fixing bolt to pass through are provided on the long and wide side sections of the first, second, and third right-angle brackets.

[0009] The anchoring component is an anchoring bolt. The rectangular plate has internal threads at its four right-angle positions. The anchoring bolt passes through the rectangular frame and is connected to the internal threads.

[0010] There are at least four limiting anchor rods, which are respectively fixed on the inner side of the long side and wide side of the first right-angle frame, the long side of the second right-angle frame, and the wide side of the third right-angle frame.

[0011] The protective plate is equipped with a handle, and below the handle is a vertical sliding rod that mates with a sliding hole formed in the protective plate. A limiting block is fixed to the bottom of the vertical sliding rod to allow it to move out of the sliding hole. The vertically movable handle on the protective plate facilitates the installation of the device without affecting the smooth operation of the subsequent paver, and allows for the quick removal of the protective structure for protection of the water collection wellhead to be used in the next operation, reducing operational difficulty.

[0012] This utility model has the following beneficial effects: By providing a template structure composed of a protective frame and a protective plate, after the lower layer of asphalt concrete is laid, only a small amount of residual asphalt on the surface of the device needs to be cleaned before the compaction process can be carried out, thereby ensuring the smoothness of the asphalt pavement outside the water collection well opening, simplifying the operation process, and improving the operation efficiency; after the base mixture is laid, it can be directly rolled, protecting the finished quality of the water collection well and reducing the damage rate of the water collection well body. At the same time, the limiting anchor rods on the inner side of the protective frame can effectively ensure that the device does not misalign when subjected to the drag force of the paver, avoiding the exposure of the opening, and improving the protection and safety of the water collection well opening during the paving process. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after the protective plate has been removed;

[0016] Figure 3 for Figure 2 Top view;

[0017] Figure 4 This is a cross-sectional schematic diagram of the present invention installed on the water collection wellhead when operating with different structural layers. Figure 4 (a) When used for asphalt base course work Figure 4 (b) When used for operations at the base structural layer;

[0018] Figure 5 This is a schematic diagram of the structure of the first right-angle frame in this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the second right-angle frame in this utility model;

[0020] Figure 7 This is a schematic diagram of the third right-angle frame in this utility model;

[0021] Figure 8 This is a schematic diagram of the fourth right-angle frame in this utility model.

[0022] 1. Protective plate; 2. Protective frame; 201. First right-angle frame; 202. Second right-angle frame; 203. Third right-angle frame; 204. Fourth right-angle frame; 3. Limiting anchor rod; 4. Anchor bolt; 5. Fixing bolt; 6. Length adjusting threaded hole; 7. Width adjusting threaded hole; 8. Handle; 801. Vertical slide bar; 802. Limiting block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figure 1 As shown, this utility model provides a protective device for the drainage wellhead of a road surface structural layer paving project, including a protective frame 2 and a protective plate 1 fixed to the top of the protective frame 2. The protective plate 1 is located at the top of the protective frame 2 to prevent the structural layer mixture from entering the drainage well. Figure 4 As shown in (a), when road surface operations require rapid traffic opening, the protective frame 2 and the protective plate 1 together provide a template structure with a height similar to the required asphalt lower layer. After the lower layer of asphalt concrete is laid, a small amount of residual asphalt on the surface of the device is cleaned before the compaction process can be carried out. This ensures that the compaction degree and clear boundary of the asphalt pavement outside the sump meet the specifications and design requirements. Figure 4 As shown in (b), during the base structure layer operation, the protective frame 2 and the protective plate together provide a template structure that is 3cm-5cm lower than the surrounding structure of the wellhead. After the base layer is paved and compacted, the structural layer above the protective structure is cleaned and the device is removed, thereby simplifying the operation process and improving the operation efficiency. The inner side of the protective frame 2 has a cavity structure that matches the size of the water collection well, and multiple limiting anchor rods 3 that contact the inner wall of the water collection well are fixed along the circumference of the inner side of the protective frame 2. When the device is subjected to the drag force of the paver, the limiting anchor rods 3 can effectively prevent the device from being misaligned, thereby avoiding the wellhead being exposed and improving the protection and safety of the water collection wellhead during the paving process.

[0027] To enable the rapid removal of the device from within the structural layer and its use at the water collection wellhead for upcoming operations, thereby increasing the device's turnaround rate, such as... Figure 1 As shown, the protective plate 1 is provided with a handle 8, such as Figure 4 As shown, a vertical sliding rod 801 is formed below the handle 8, which mates with a sliding hole opened on the protective plate 1. A limiting block 802 is fixed at the bottom of the vertical sliding rod 801 to allow it to move out of the sliding hole. The vertically movable handle 8 is designed on the protective plate 1, which facilitates the installation, movement, and dismantling of the device without affecting the smooth operation of the subsequent paver, thus reducing the difficulty of operation.

[0028] Because the drainage requirements and road surface load-bearing requirements vary in different projects, the dimensions of the sump pits constructed on the roads also differ. Especially when the road does not meet current drainage needs, it is often necessary to widen the sump pits. In this case, to accommodate different sump pit opening sizes, increase the versatility of the equipment, and improve turnover rate, such as... Figure 2 and Figure 3As shown, the protective frame 2 is a rectangular frame with adjustable dimensions, and the protective plate 1 is a plurality of rectangular plates adapted to the rainwater grates of different collection wells. Each rectangular plate is detachably connected to a rectangular frame of a corresponding size via anchoring components. Specifically, in this embodiment, the anchoring components are anchor bolts 4. To avoid the anchor bolts 4 being exposed above the protective plate 1, causing difficulties in cleaning the surface of the anchor bolts 4, as shown... Figure 1 and Figure 4 As shown, the rectangular plate has internal threaded parts at the four right-angle positions. The anchor bolt 4 passes through the rectangular frame from the bottom and is connected to the internal threaded parts. In order to ensure the flatness of the rectangular frame when it is placed outside the well opening, the through hole on the rectangular frame is a countersunk hole and the anchor bolt 4 is an internal hex bolt, so that the head of the anchor bolt 4 is flush with or slightly concave with the surface of the rectangular frame.

[0029] More preferably, the rectangular frame includes a first right-angle frame 201, a second right-angle frame 202, a third right-angle frame 203, and a fourth right-angle frame 204. The wide side of the second right-angle frame 202 and the long side of the third right-angle frame 203 are respectively inserted into the wide side and long side of the first right-angle frame 201. The long side and wide side of the fourth right-angle frame 204 are respectively inserted into the long side of the second right-angle frame 202 and the wide side of the third right-angle frame 203. The first right-angle frame 201, the second right-angle frame 202, and the third right-angle frame 203 are provided with locking members for locking the internal insertion parts.

[0030] like Figures 4-6 The locking component is a fixing bolt 5. The wide side sections of the second right-angle bracket 202 and the fourth right-angle bracket 204 are provided with multiple width-adjusting threaded holes 7 along the width direction of the rectangular frame. The long side sections of the third right-angle bracket 203 and the fourth right-angle bracket 204 are provided with multiple length-adjusting threaded holes 6 along the length direction of the rectangular frame. Through holes for the fixing bolt 5 to pass through are provided on the long and wide side sections of the first right-angle bracket 201, the long side section of the second right-angle bracket 202, and the wide side section of the third right-angle bracket 203. Specifically, in this embodiment, the width-adjusting threaded hole... There are 3 perforated holes 7 and 4 length adjustment threaded holes 6. The four right-angle brackets are interlocked and connected to the corresponding width adjustment threaded holes 7 and length adjustment threaded holes 6 by fixing bolts 5. The inner dimensions of the rectangular frame can be adjusted to 300x500mm, 400x500mm, 400x600mm, 400x700mm and 450x750mm, which correspond to the dimensions of the corresponding rain grate. The fixing bolts 5 are connected by the through holes and threaded holes to ensure that the rectangular frame after size adjustment has the strength required to withstand the drag force of the paver in both the length and width directions.

[0031] At least four limiting anchor rods 3 are fixed to the inner sides of the long and wide sides of the first right-angle frame 201, the long side of the second right-angle frame 202, and the wide side of the third right-angle frame 203, respectively, to ensure that when the rectangular frame is adjusted in size, the limiting anchor rods 3 are always located on the inner wall of the corresponding right-angle frame and do not interfere with adjacent right-angle frames; more preferably, to ensure the limiting capability of the limiting anchor rods 3, such as Figure 2 and Figure 3 As shown, there are 8 limiting anchor rods 3. Two limiting anchor rods 3 are fixed on the long side and wide side of the first right-angle frame 201, the long side of the second right-angle frame 202, and the wide side of the third right-angle frame 203, respectively.

[0032] When implementing the above technical solution, the corresponding wellhead size is a standard 400x700mm. The device is adjusted according to this wellhead size, and a fixing bolt 5 is used to pass through the through hole and connect to the corresponding length adjustment threaded hole 6 / width adjustment threaded hole 7 on the right-angle frame. Anchor bolts 4 are threaded through the assembled rectangular frame from the bottom upwards and fixed to the rectangular plate. Taking a road surface requiring rapid traffic opening as an example... Figure 4 As shown in (a), the device is placed above the precast manhole ring by holding the handle 8. At this time, each limiting anchor rod 3 is located near the inner wall of the manhole opening, which can prevent the device from shifting in a large range in the length / width direction of the manhole. Therefore, when the paver is performing asphalt paving, it can effectively prevent the top protective plate 1 from detaching from the manhole and causing misalignment between the device and the manhole when the device is subjected to the drag force of the paver. This improves the protection and safety of the manhole opening during the paving process. After paving is completed, only one operator is needed to remove the asphalt residue above the protective plate 1 before proceeding with the subsequent asphalt mixing. The compaction process of the asphalt mixture ensures that the compaction degree and clear boundary of the asphalt pavement outside the water collection well opening meet the specifications and design requirements. Compared with the existing technology, it simplifies the operation process, reduces the labor intensity, and thus improves the overall efficiency of asphalt construction. In this embodiment, although the handle will be higher than the protective plate 1, its height is only about 0.5cm, which will not affect the normal operation of the paver and roller. After the roller finishes compaction and the temperature of the asphalt pavement drops to about 70℃, the asphalt mixture is formed. The device can be lifted from above the precast well ring by hooking the handle with auxiliary tools such as iron hooks.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A catch basin head protection device for use in paving a structural layer of a roadway, characterized by, It includes a protective frame and a protective plate fixed on top of the protective frame. The inner side of the protective frame has a cavity structure adapted to the size of the inner cavity of the water collection well, and multiple limiting anchor rods that contact the inner wall of the water collection well are fixed circumferentially on the inner side of the protective frame.

2. A catch basin head protection device for paving structure layer paving according to claim 1, characterized in that, The protective frame is a rectangular frame with adjustable size, and the protective plate is a plurality of rectangular plates adapted to the rainwater grates of different collection wells. Each of the rectangular plates is detachably connected to the rectangular frame of a corresponding size via anchoring components.

3. A catch basin head protection device for paving layer spreading according to claim 2, wherein The rectangular frame includes a first right-angle frame, a second right-angle frame, a third right-angle frame, and a fourth right-angle frame. The wide side of the second right-angle frame and the long side of the third right-angle frame are respectively inserted into the wide side and long side of the first right-angle frame. The long side and wide side of the fourth right-angle frame are respectively inserted into the long side of the second right-angle frame and the wide side of the third right-angle frame. The first right-angle frame, the second right-angle frame, and the third right-angle frame are provided with locking devices for locking the internal insertion parts.

4. A water collection wellhead protection device for road surface structural layer paving according to claim 3, characterized in that, The locking component is a fixing bolt. The wide side sections of the second and fourth right-angle brackets are provided with multiple width-adjusting threaded holes along the width direction of the rectangular frame. The long side sections of the third and fourth right-angle brackets are provided with multiple length-adjusting threaded holes along the length direction of the rectangular frame. Through holes for the fixing bolt to pass through are provided on the long and wide side sections of the first, second, and third right-angle brackets.

5. A water collection wellhead protection device for road surface structural layer paving according to any one of claims 2-4, characterized in that, The anchoring component is an anchoring bolt. The rectangular plate has internal threads at its four right-angle positions. The anchoring bolt passes through the rectangular frame and is connected to the internal threads.

6. A water collection wellhead protection device for road surface structural layer paving according to claim 3 or 4, characterized in that, There are at least four limiting anchor rods, which are respectively fixed on the inner side of the long side and wide side of the first right-angle frame, the long side of the second right-angle frame, and the wide side of the third right-angle frame.

7. A water collection wellhead protection device for road surface structural layer paving according to any one of claims 1-4, characterized in that, The protective plate is provided with a handle, and a vertical slide rod is formed below the handle to cooperate with the slide hole opened on the protective plate. A limiting block is fixed at the bottom of the vertical slide rod to allow the vertical slide rod to move out of the slide hole.

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