Drainage structure with self-adapting thixotropic drainage cover plate

Abstract

The application discloses a drainage structure with a self-adaptive thixotropic drainage cover plate, wherein a self-adaptive support assembly is arranged on the drainage cover plate, the top end surface of the side wall of the drainage ditch body is lower than the roadbed plane, the roadbed is sequentially laid on the top end surface of the side wall of the drainage ditch body, and a structural joint is arranged between the two side surfaces of the drainage cover plate and the roadbed; the self-adaptive support assembly comprises a bending-resistant module, a pressure-sensing module and a side wall support module; the top of the pressure-sensing module forms a touch pressure area, the side wall support module is in transmission connection with the pressure-sensing module, and the side wall support module can be switched between a side wall support state and a disengaged support state; the drainage structure is provided with the self-adaptive support assembly which can be automatically switched according to the load state on the drainage cover plate, so that the drainage ditch body can obtain the lateral support force of the side wall support module in a normal state, the bending moment of the side wall of the drainage ditch body is effectively reduced, the lateral constraint is released in a pressure state, the lateral deformation is released through the structural joint, and the risk of shear extrusion damage between the drainage cover plate and the roadbed and the side wall of the drainage ditch body is reduced.

Description

Technical Field

[0001] This invention relates to the field of drainage ditch technology, specifically to a drainage structure with an adaptive thixotropic drainage cover. Background Technology

[0002] Drainage ditches are core engineering facilities for collecting and draining surface water, and are widely used in roads, storage yards, airport runways and large municipal squares. In wide and flat areas, in order to improve drainage efficiency, the "centerline drainage" scheme is often adopted, which places the drainage ditch in the middle of the site. This causes the junction of the drainage ditch and the road structure to be subjected to high-frequency and high-intensity reciprocating rolling and impact loads from vehicles for a long time.

[0003] Traditional drainage ditch and road surface connection structures mainly consist of sidewall shears and cover plates. The shears are connected to the road surface through structural expansion joints, which are often filled with flexible waterproof materials such as asphalt hemp fiber. Due to significant differences in material properties, load-bearing capacity, and foundation stiffness between the drainage ditch and the surrounding road surface, uneven settlement is prone to occur at the joints, forming "bounce points" and exacerbating the impact of vehicles on the structure. Under long-term dynamic loads, wear and exposed reinforcement are likely to occur at the joints between the drainage ditch and the road surface, and at the joints between the cover plate and the sidewall shears. This not only significantly shortens the service life of the drainage ditch but also increases the safety risks such as tire blowouts.

[0004] Traditional drainage ditches also have inherent defects in terms of structural stress: in order to facilitate on-site installation, the width of the cover plate is usually slightly smaller than the clear distance between the ditch wall and the cover plate, resulting in an installation gap between the cover plate and the shear joint of the side wall. It is difficult to form a reliable support for the top of the ditch wall, so the side wall of the drainage ditch is in a cantilever stress state for a long time. A large amount of steel reinforcement is required to meet the bending resistance requirements, resulting in material waste and increased construction costs. Moreover, the cantilever side wall is prone to excessive deformation under vehicle load, which further aggravates the uneven settlement and wear at the joints, forming a vicious cycle. In summary, existing drainage ditch technology suffers from technical problems such as severe joint wear, difficulty in controlling uneven settlement, and unreasonable sidewall stress. There is an urgent need for a new type of drainage ditch structure to achieve the technical objectives of reducing structural joints, dynamically adjusting joint width, optimizing sidewall stress, and reducing vehicle wear. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a drainage structure with an adaptive thixotropic drainage cover to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A drainage structure with an adaptive thixotropic drainage cover includes a drainage ditch and a drainage cover. The drainage ditch has a U-shaped structure and is laid in the trench of the roadbed. The drainage cover is equipped with an adaptive support component. The top surface of the sidewall of the drainage ditch is lower than the ground level of the roadbed, and the roadbed extends to the top surface of the sidewall of the drainage ditch. The top surface of the sidewall of the drainage ditch and the roadbed on both sides together form a cover plate installation groove. The drainage cover plate is set in the cover plate installation groove, and there are structural joints between its two sides and the roadbed on both sides. An adaptive support assembly is installed on the drainage cover plate, which includes a bending resistance module, a pressure sensing module, and a sidewall support module. The bending resistance module is located on the bottom side of the drainage cover plate and arranged laterally to improve the bending stiffness and structural strength of the drainage cover plate. A pressure-contacting area is formed on the top of the pressure sensing module, which is located within the maximum bending moment stress area on the upper surface of the drainage cover plate. The pressure sensing module is connected to the sidewall support module. The sidewall support module can switch between a sidewall supported state and a unsupported state. Under normal working conditions without load sensing, the sidewall support module maintains the sidewall supported state. When the pressure sensing module senses the vertical pressure load, it transmits the pressure displacement signal to the sidewall support module, driving the sidewall support module to switch to the unsupported state. The unsupported state allows the drainage cover plate to release bending deformation laterally.

[0007] In one possible embodiment, the sidewall support module is a telescopic assembly, which includes a transverse telescopic sleeve, telescopic rods, and a telescopic spring. The two telescopic rods are connected to the pressure sensing module through a transmission structure at their roots. Under the driving action of the transmission structure and the restoring action of the telescopic spring, the two telescopic rods can be slidably telescopically assembled inside the transverse telescopic sleeve. The ends of the two telescopic rods extend out of the transverse telescopic sleeve and abut against the inner sidewall of the drainage ditch in the sidewall support state, thereby achieving sidewall support limitation.

[0008] In one possible embodiment, the pressure sensing module includes a pressure rod assembly and a return spring. The pressure rod assembly includes a pressure rod, a pressure sensing plate located at the top of the pressure rod, and a drive structure at the bottom. The top of the pressure sensing plate extends beyond the upper surface of the drain cover and forms a pressure area. The pressure rod is elastically supported by the return spring, and sliding up and down allows the drive structure to switch between a retracted position and an extended position.

[0009] In one possible embodiment, the anti-bending module is a connecting beam, which is arranged laterally on the bottom side of the drainage cover and connected to the drainage cover through a pre-embedded structure. A transverse telescopic sleeve is arranged on the connecting beam.

[0010] In one possible embodiment, the driving structure is a double wedge driving structure, the transmission structure is a corresponding wedge transmission structure, the driving structure slides with the pressure rod, and linearly drives the telescopic rod to extend and retract, which is used to adaptively support the sidewall.

[0011] In one possible embodiment, the driving structure is a multi-stage tenon drive structure, and the transmission structure is a corresponding tenon transmission structure. The spacing between adjacent tenons of the multi-stage tenon drive structure is adapted to the sensing stroke height of the touch sensor plate. When the driving structure is in the retracted position, the multi-stage tenon drive structure meshes with the tenon transmission structure. When the driving structure is in the extended position, the tenons of the multi-stage tenon drive structure and the tenon transmission structure abut against each other to provide rigid support.

[0012] In one possible embodiment, the pressure rod is rotatably mounted on the drainage cover plate, with drive contacts on both sides of its top end. A spiral guide groove is provided on the bottom side of the touch-sensitive plate. The drive contacts cooperate with the spiral guide groove to drive the pressure rod to rotate when the touch-sensitive plate is raised and lowered. The drive structure is a cam drive structure, and the transmission structure is a corresponding arc surface transmission structure. When in the extended position, the arc surface protrusion of the cam drive structure is adapted to and abuts against the arc surface transmission structure to provide rigid support. The center of the arc surface protrusion is located on the rotation center line of the cam drive structure.

[0013] In one possible embodiment, a limiting guide rail is provided on the top surface of the side wall of the drainage ditch. The limiting guide rail is provided with several evenly distributed guide grooves that extend laterally. Slider blocks are provided at both ends of the bottom side of the drainage cover. The sliders slide in cooperation with the guide grooves to limit the longitudinal sliding of the drainage cover and guide the lateral sliding of the drainage cover when it is unsupported.

[0014] In one possible embodiment, the pressure-sensitive plate is an elastic plate, which includes a pressure area, a deformation area, and a support wing area. The deformation area transitions between the pressure area and the support wing area. A sensing groove is provided on the drainage cover, and a cover is provided at the opening of the sensing groove. A sensing hole is provided in the middle of the cover. The pressure-sensitive plate is installed in the sensing groove, with the pressure area extending out of the sensing hole. The support wing area is close to the bottom of the sensing groove to provide deformation support. A deformation space is reserved in the sensing groove for the elastic deformation of the pressure-sensitive plate.

[0015] In one possible embodiment, the pressure sensing module is mounted on the drainage cover via a guide sliding support sleeve.

[0016] Compared with the prior art, the drainage structure with an adaptive thixotropic drainage cover of the present invention has the following beneficial effects: This drainage structure incorporates adaptive support components on the drainage cover that automatically switch according to load conditions. Under normal conditions, the drainage ditch receives lateral support from the sidewall support modules, effectively reducing the sidewall bending moment of the U-shaped drainage ditch. Under compression, the lateral constraints are released, resulting in better bending resistance of the drainage cover. Furthermore, the lateral deformation is released through structural joints, thereby reducing the risk of shear and compression damage between the drainage cover and the roadbed or the sidewall of the drainage ditch. This improves the durability, driving comfort, and maintenance convenience of the drainage structure. Attached Figure Description

[0017] Figure 1 This is a first example illustration of a drainage structure with an adaptive thixotropic drainage cover disclosed in this invention; Figure 2 This is a second example illustration of the drainage structure with an adaptive thixotropic drainage cover disclosed in this invention; Figure 3 This is a third example illustration of the drainage structure with an adaptive thixotropic drainage cover disclosed in this invention; Figure 4 This is a fourth example illustration of the drainage structure with an adaptive thixotropic drainage cover disclosed in this invention. Figure 5 for Figure 4 A schematic diagram of the adaptation state between the drive structure and the transmission structure; Figure 6 This is a schematic diagram of the limiting guide slide plate disclosed in this invention; Figure 7 This is a schematic diagram of the installation structure of the transverse telescopic sleeve disclosed in this invention.

[0018] Attached image labels: 1. Roadbed; 2. Limiting guide rail; 3. Drainage cover; 4. Pressure bar assembly; 41a. Double wedge drive structure; 41b. Multi-stage tenon drive structure; 41c. Cam drive structure; 41c. Arc-shaped protrusion; 42. Touch pressure sensor plate; 43. Force transmission sleeve; 44. Drive contact point; 5. Connecting crossbeam; 6. Drainage ditch body; 7. Telescopic rod; 71a. Wedge-shaped transmission structure; 71b. Tenon drive structure; 71c. Arc-shaped transmission structure; 8. Lateral telescopic sleeve; 9. Return spring; 10. Telescopic spring; 11. Cover; 12. Support seat; 14. Guide sliding support sleeve; a. Support circle auxiliary line; b. Base circle auxiliary line. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely the best embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The term "embodiment" as used herein means that a particular method, step, or content described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This application provides a drainage structure with an adaptive thixotropic drainage cover, such as... Figures 1-7 As shown, it includes a drainage ditch body 6 and a drainage cover 3; The drainage ditch 6 has an overall U-shaped structure and is laid within a pre-excavated trench formed by the roadbed 1. It serves as a drainage channel for rainwater, surface runoff, or seepage. To avoid structural joints between the drainage ditch 6 and the roadbed 1, the surface layer of the roadbed 1 is poured after the drainage ditch 6 is completed. The roadbed 1 extends to the top surface of the sidewall of the drainage ditch 6. Thus, the roadbed 1 on both sides of the drainage ditch 6 and the top surface of the sidewall of the drainage ditch 6 enclose three sides, forming a cover plate installation groove. The drainage cover 3 is laid in the cover plate installation groove, and its upper surface is flush or nearly flush with the ground plane of the roadbed 1 to ensure the smoothness of the road surface. This facilitates smooth on-site installation and accommodates vehicle loads, foundation settlement, and lateral compression. The generated slight lateral displacement is reserved for release space. The width of the drainage cover plate 3 is often smaller than the groove width of the cover plate installation groove. Structural joints are formed between the two sides of the drainage cover plate 3 and the corresponding side roadbed 1. Compared with the existing drainage ditch body 6 scissor paving technology, the drainage structure of this embodiment forms only one structural joint on one side of the drainage cover plate 3. While satisfying the displacement release space, it is beneficial to improve the smoothness of the road surface with drainage structure. At the same time, since the road surface is paved and extends to the top of the drainage ditch body 6, the settlement stress of the surrounding roadbed 1 on both sides can be shared by the drainage structure, effectively reducing the uneven settlement difference between the drainage structure and the roadbed 1 on both sides, and improving the smoothness and durability of the road surface at the drainage structure for long-term use. Each drainage cover 3 is equipped with at least one set of adaptive support components, which include an anti-bending module, a pressure sensing module, and a sidewall support module; wherein... The bending-resistant module is used to improve the bending stiffness and structural strength of the drainage cover 3. Since both the drainage cover 3 and the drainage ditch 6 are reinforced concrete structures, in order to improve the load-bearing capacity of the drainage cover 3 when it is supported on both sides and suspended in the middle, the bending-resistant module adopts a T-shaped connecting beam 5. The connecting beam can be made of T-shaped steel, or alternatively, it can be made of other materials. Figure 7 The bent steel shown is bent to form an integral structure connecting beam 5 and transverse telescopic sleeve 8; the connecting beam 5 is fixed to the bottom side plane of the drainage cover 3 by embedded parts and arranged in the transverse direction of the drainage cover 3. A pressure-sensitive area is formed at the top of the pressure-sensitive module. This area is located within the maximum bending moment stress area on the upper surface of the drainage cover 3, preferably in the middle of the cantilevered area of ​​the transverse span of the drainage cover 3. When an external load is applied to this area, the pressure-sensitive area can preferentially sense the vertical pressure and generate downward displacement. The pressure-sensitive module switches the side wall support module between the side wall support state and the unsupported state based on the vertical displacement. Under normal operating conditions without load sensing, the side wall support module maintains the side wall support state, with both ends of the side wall support module abutting or pressing against the upper part of the inner sidewalls of the drainage ditch 6. The drainage ditch 6 can reduce its transverse support force provided by the side wall support module. Side wall bending moment; when the pressure sensing module senses the vertical pressure load, it transmits the vertical pressure displacement signal to the side wall support module, driving the side wall support module to switch to the unsupported state, so that the end of the side wall support module is released from the tight state with the inner side wall of the drainage ditch body 6 or forms a gap fit. Thus, when the drainage cover 3 is subjected to concentrated load and undergoes bending deformation or slight lateral deformation, its lateral constraint is released in time, and the structural joint can play a displacement buffering role, thereby reducing the hard collision and shear compression between the drainage cover 3 and the roadbed 1 and the side wall of the drainage ditch body 6. At this time, the drainage cover 3 acts as a pure bending member, and with the reinforcement of the bending module, its bending bearing capacity is improved.

[0022] In one possible embodiment, refer again Figures 1-4 The sidewall support module is a telescopic assembly, which includes a transverse telescopic sleeve 8, telescopic rods 7, and telescopic springs 10. The transverse telescopic sleeve 8 is arranged transversely along the drainage cover 3. In this embodiment, it is directly mounted on the anti-bending module. The two telescopic rods 7 are slidably mounted on both ends of the transverse telescopic sleeve 8, with the ends of the two telescopic rods 7 extending out of the transverse telescopic sleeve 8 and pressing against the inner sidewall of the drainage ditch body 6 in the sidewall support state, thereby achieving sidewall support limitation. The telescopic rods 7 are equipped with telescopic springs 10. An example installation position of the telescopic springs 10 is as follows: Figure 1As shown, it can be installed at the end of the telescopic rod 7, and it elastically abuts against the side wall of the drainage ditch body 6 to provide elastic support. Under the telescopic movement of the telescopic assembly, the telescopic spring 10 changes the magnitude of the elastic support force to adapt to the side wall support state and the unsupported state. In this embodiment, the spring cap at the end of the telescopic spring 10 always remains in contact with the side wall, which can prevent the drainage ditch body 6 from being impacted by telescopic movement, and can adapt to the width of the drainage ditch body 6 for support; another example installation position of the telescopic spring 10 is as follows. Figures 2-4 As shown, it can be sleeved in the middle of the telescopic rod 7 and pressed between the telescopic rod 7 and the stepped structure of the transverse telescopic sleeve 8. It is used to provide the contraction recovery force and maintain the contact transmission between the transmission structure and the drive structure. When subjected to pressure, the pressure sensing module moves downward, the drive structure switches to the drive-retraction position, the rigid support force is released, and the telescopic spring 10 drives the telescopic rod 7 to retract. The installation structure of this embodiment can help provide rigid support in the side wall support state. In one possible embodiment, the pressure sensing module includes a pressure rod assembly 4 and a return spring 9. The pressure rod assembly 4 includes a pressure rod, a pressure sensing plate 42 disposed at the top of the pressure rod, and a drive structure disposed at the bottom of the pressure rod. The top of the pressure sensing plate 42 extends beyond or slightly above the upper surface of the drainage cover 3, forming a pressure area capable of sensing the bottom ballast. The pressure rod, which is integral with or connected to the pressure sensing plate 42, can be vertically slidably disposed on the drainage cover 3 and is elastically supported by the return spring 9, allowing the drive structure to switch between a retracted position and an extended position. The return spring 9 can be installed in a manner such as... Figure 1 The structure shown in Example 1 is mounted on the transverse telescopic sleeve 8 and pressed between the bottom of the drive structure and the support seat 12. The support seat 12 is fitted around the bottom of the transverse telescopic sleeve 8. The spring can be installed as follows: Figure 2 The structure shown in Example 2 is sleeved on the pressure rod and pressed between the touch sensing plate 42 and the spring groove, with the spring groove located at the bottom of the sensing groove.

[0023] In one possible embodiment, such as Figure 1As shown in example 2, the driving structure is a double wedge driving structure 41a, and the transmission structure is a corresponding wedge transmission structure 71a. The double wedge driving structure 41a has two symmetrical wedge surfaces, which correspond to and cooperate with the two wedge transmission structures 71a respectively. When the pressure rod is subjected to ballast and moves downward, the double wedge driving structure 41a moves downward to gradually unload the support. The telescopic rod 7, which is engaged by the inclined surfaces, is driven to retract laterally under the action of the telescopic spring 10. When the pressure rod is reset, the double wedge driving structure 41a moves upward and is inserted vertically between the two wedge transmission structures 71a. Under the elastic action of the return spring 9, the double wedge driving structure 41a converts the vertical displacement of the pressure rod into the linear telescopic displacement of the telescopic rod 7 through the inclined surface cooperation, and adaptively supports the side wall of the drainage ditch body 6. This embodiment has a simple structure, a wide range of support adaptability, and is suitable for low-load roadbed 1 and drainage ditch body 6 structures with large construction tolerances.

[0024] In one possible embodiment, such as Figure 3 The structure shown in Example 3 has a multi-stage tenon drive structure 41b as the driving structure and a matching tenon transmission structure 71b as the transmission structure. The multi-stage tenon drive structure 41b has multiple stepped tenon rings along the vertical movement direction of the pressure rod, and the spacing between adjacent tenons is adapted to the sensing stroke height of the touch-sensitive plate 42. When the driving structure is in the retracted position, the multi-stage tenon drive structure 41b meshes with the tenon transmission structure 71b, and under the action of the telescopic spring 10, the telescopic rod 7 retracts inward, realizing the disengagement from the support state. When the driving structure is in the extended position, the tenons of the multi-stage tenon drive structure 41b and the tenon transmission structure 71b abut against each other, forming a stepped rigid support, which can improve the anti-retraction ability of the telescopic rod 7 in the side wall support state. This embodiment can not only realize automatic return support, but also improve the support rigidity in the side wall support state through the graded abutment of the multi-stage tenons, which is suitable for road drainage structures with high load requirements or complex vibration environments.

[0025] In one possible embodiment, such as Figures 4-5In the example four structure shown, the pressure rod and the pressure sensing plate 42 are separate structures, and the two are transmitted through an action conversion structure. The pressure rod is rotatably mounted on the drainage cover plate 3 and the anti-bending module via bearings. The top two sides of the pressure rod extend vertically to form drive contacts 44. The bottom side of the pressure sensing plate 42 has an integral force transmission sleeve 43. The force transmission sleeve 43 has a spiral guide groove extending in the circumferential direction cut out on its circumferential surface. The drive contacts 44 cooperate with the spiral guide groove to form an action conversion structure. The pressure sensing plate 42 is supported by a return spring 9. When it slides up and down under vertical pressure, the drive contacts 44 drive the pressure rod to rotate under the driving action of the downward spiral guide groove. At this time, the driving structure is a cam drive structure 41c, and the transmission structure is an arc surface transmission structure 71c that cooperates with the cam drive structure 41c. The cam drive structure 41c has an arc surface protrusion 411c. When the pressure rod rotates to the extended position, the arc surface protrusion 411c and the arc surface transmission structure 71c are adapted to abut against each other to provide rigid support for the telescopic rod 7, so that the telescopic rod 7 remains in the extended state. When the touch sensor plate 42 is pressed and drives the pressure rod to rotate to the retracted position, the arc surface transmission structure 71c avoids the arc surface protrusion 411c and contacts the base circle of the cam drive structure 41c. The telescopic rod 7 retracts inward under the action of the telescopic spring 10 and releases the rigid support. Preferably, refer again Figure 5 As shown by auxiliary line a of the support circle and auxiliary line b of the base circle, the support circle and the base circle are concentric circles. The support circle is the outline of the arc protrusion 411c. That is, the center of the arc protrusion 411c is set on the rotation center line of the cam drive structure 41c, so that the cam drive structure 41c has good self-locking support characteristics in the extended support state. The external lateral reaction force is not easy to drive the pressure rod to rotate in the opposite direction, thereby improving the stability of the side wall support state and obtaining a larger support contact area.

[0026] In one possible embodiment, such as Figure 6 As shown, a limiting guide rail 2 is provided on the top surface of the side wall of the drainage ditch body 6. The limiting guide rail 2 is provided with several evenly distributed V-shaped or trapezoidal guide grooves. Slider blocks are provided on both ends of the bottom side of the drainage cover plate 3. The slider and the guide groove can be made of metal parts to protect the contact surface of the drainage ditch body 6 and the drainage cover plate 3. The slider and the guide groove slide together to reduce the friction force of slight lateral slippage of the drainage cover plate 3 under load. As a result, the drainage cover plate 3 slides laterally under the action of wheel pressure friction and the guidance of the guide groove, thereby reducing the width of the front end structural joint, reducing the wear of the roadbed 1 joint and the damage to the tires.

[0027] In one possible embodiment, such as Figures 1-4As shown, the pressure sensing plate 42 is an elastic plate, which includes a pressure area, a deformation area, and a support wing area. The deformation area transitions between the pressure area and the support wing area, allowing the pressure area to undergo controllable elastic sinking when pressed. A sensing groove is provided on the drainage cover plate 3, and a cover 11 is provided at the opening of the sensing groove. A sensing hole is provided in the middle of the cover 11. The pressure sensing plate 42 is installed in the sensing groove, with the pressure area extending out of the sensing hole and the support wing area pressed against the bottom of the sensing groove to provide deformation support. A deformation space is reserved in the sensing groove for the elastic deformation of the pressure sensing plate 42, so that the pressure sensing plate 42 can generate a stable vertical displacement when pressed, and return to its original position after the pressure is released by its own elasticity and the elastic force of the pressure rod return spring 9. The cover 11 can protect the edge of the pressure sensing plate 42 and prevent sand, mud, or debris from directly entering the sensing groove. At the same time, it can limit the upper limit position and deformation direction of the pressure sensing plate 42, improving the reliability of the pressure sensing module for long-term use.

[0028] In one possible embodiment, to improve the service life of the drainage cover 3 and the installation reliability of the pressure sensing module, the pressure sensing module is installed on the drainage cover 3 via a guide sliding support sleeve 14; the guide sliding support sleeve 14 is pre-embedded to connect to the drainage cover 3, such as... Figures 1-4 As shown, the structure of the guide support sleeve 14 is adapted to the contact surface of the pressure sensing module and the drainage cover 3 to accommodate the support pressure of the return spring 9, the vertical sliding guidance of the pressure rod, and the installation of the bearing.

[0029] The directional words mentioned in this article, such as "outer," "inner," "upper," "lower," "side," "end," "horizontal," "vertical," "front," and "bottom," are based on... Figures 1-7 The orientation or positional relationship shown in the corresponding figures, or the orientation relationship in the state of use; wherein, "longitudinal" can be understood as the extension or laying direction of the drainage ditch body 6, and "lateral" can be understood as the width direction of the drainage ditch body 6; these terms are mainly for better describing the invention and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drainage structure with an adaptive thixotropic drainage cover, comprising a drainage ditch and a drainage cover, wherein the drainage ditch has a U-shaped structure and is laid in a trench in the roadbed, characterized in that: The drainage cover is equipped with an adaptive support assembly; The top surface of the side wall of the drainage ditch is lower than the ground plane of the roadbed, and the roadbed extends to the top surface of the side wall of the drainage ditch. The top surface of the side wall of the drainage ditch and the roadbed on both sides together form a cover plate installation groove. The drainage cover plate is set in the cover plate installation groove, and there are structural joints between its two sides and the roadbed on both sides. The adaptive support assembly is disposed on the drainage cover plate and includes a bending resistance module, a pressure sensing module, and a sidewall support module. The bending resistance module is disposed on the bottom side of the drainage cover plate and arranged laterally to improve the bending stiffness and structural strength of the drainage cover plate. A pressure-sensitive area is formed on the top of the pressure sensing module, which is located within the maximum bending moment stress area on the upper surface of the drainage cover plate. The pressure sensing module is drively connected to the sidewall support module. The sidewall support module can switch between a sidewall supported state and a desupported state. Under normal operating conditions without load sensing, the side wall support module maintains the side wall support state. When the pressure sensing module senses the vertical pressure load, it transmits the pressure displacement signal to the side wall support module, driving the side wall support module to switch to the unsupported state. The unsupported state allows the drainage cover to release bending deformation in the lateral direction.

2. The drainage structure with an adaptive thixotropic drainage cover according to claim 1, characterized in that: The sidewall support module is a telescopic assembly, which includes a transverse telescopic sleeve, telescopic rods, and telescopic springs. The two telescopic rods are connected to the pressure sensing module through a transmission structure at their roots. Under the driving action of the transmission structure and the restoring action of the telescopic springs, the two telescopic rods can be slidably telescopically assembled inside the transverse telescopic sleeve. The ends of the two telescopic rods extend out of the transverse telescopic sleeve and abut against the inner sidewall of the drainage ditch body in the sidewall support state, thereby achieving sidewall support and limiting.

3. The drainage structure with an adaptive thixotropic drainage cover according to claim 2, characterized in that: The pressure sensing module includes a pressure rod assembly and a return spring. The pressure rod assembly includes a pressure rod, a pressure sensing plate located at the top of the pressure rod, and a driving structure located at the bottom of the pressure rod. The top of the pressure sensing plate extends beyond the upper surface of the drainage cover and forms the pressure area. The pressure rod is elastically supported by the return spring, and the up-and-down sliding allows the driving structure to switch between a retracted position and an extended position.

4. The drainage structure with an adaptive thixotropic drainage cover according to claim 2, characterized in that: The anti-bending module is a connecting beam, which is arranged laterally on the bottom side of the drainage cover and connected to the drainage cover through a pre-embedded structure. The transverse telescopic sleeve is arranged on the connecting beam.

5. The drainage structure with an adaptive thixotropic drainage cover according to claim 3, characterized in that: The driving structure is a double wedge driving structure, and the transmission structure is a corresponding wedge-shaped transmission structure. The driving structure slides with the pressure rod and linearly drives the telescopic rod to extend and retract, which is used to adaptively support the side wall.

6. The drainage structure with an adaptive thixotropic drainage cover according to claim 3, characterized in that: The driving structure is a multi-stage tenon drive structure, and the transmission structure is a corresponding tenon transmission structure. The spacing between adjacent tenons of the multi-stage tenon drive structure is adapted to the sensing stroke height of the touch-sensitive plate. When the driving structure is in the retracted position, the multi-stage tenon drive structure meshes with the tenon transmission structure. When the driving structure is in the extended position, the tenons of the multi-stage tenon drive structure and the tenon transmission structure abut against each other to provide rigid support.

7. The drainage structure with an adaptive thixotropic drainage cover according to claim 3, characterized in that: The pressure rod is rotatably mounted on the drainage cover plate, and driving contacts are provided on both sides of its top end. A spiral guide groove is provided on the bottom side of the pressure sensing plate. The driving contacts cooperate with the spiral guide groove to drive the pressure rod to rotate when the pressure sensing plate slides up and down. The driving structure is a cam driving structure, and the transmission structure is a corresponding arc surface transmission structure. When in the extended position, the arc surface protrusion of the cam driving structure is adapted to and abuts against the arc surface transmission structure to provide rigid support. The center of the arc surface protrusion is located on the rotation center line of the cam driving structure.

8. The drainage structure with an adaptive thixotropic drainage cover according to claim 1, characterized in that: The top side wall of the drainage ditch is provided with a limiting guide rail, and the limiting guide rail is provided with a number of evenly distributed guide grooves. The guide grooves extend laterally. The two ends of the bottom side of the drainage cover are provided with sliders. The sliders slide in cooperation with the guide grooves to limit the longitudinal sliding of the drainage cover and guide the lateral sliding of the drainage cover in the unsupported state.

9. The drainage structure with an adaptive thixotropic drainage cover according to any one of claims 3 to 7, characterized in that: The pressure-sensitive plate is an elastic plate, which includes a pressure area, a deformation area, and a support wing area. The deformation area transitions between the pressure area and the support wing area. A sensing groove is provided on the drainage cover. A cover is provided at the opening of the sensing groove. A sensing hole is provided in the middle of the cover. The pressure-sensitive plate is installed in the sensing groove. The pressure area extends out of the sensing hole. The support wing area is close to the bottom of the sensing groove to provide deformation support. A deformation space is reserved in the sensing groove for the elastic deformation of the pressure-sensitive plate.

10. The drainage structure with an adaptive thixotropic drainage cover according to any one of claims 1 to 7, characterized in that: The pressure sensing module is installed on the drainage cover plate via a guide sliding support sleeve.

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